/* roulang page: index */
:root{
  --bg-0:#070C11;--bg-1:#0C141B;--bg-2:#101C24;--bg-3:#0E1A20;
  --primary:#1FB2C4;--primary-2:#2FD9C6;--accent:#F0A04B;
  --text-1:#E9F2F4;--text-2:#A9BEC4;--text-3:#6F858C;
  --ok:#2FBF71;--warn:#E8B33A;--err:#E5484D;
  --line-1:rgba(255,255,255,.10);--line-2:rgba(31,178,196,.16);--line-3:rgba(31,178,196,.32);
  --glass:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  --r-card:16px;--r-panel:12px;--r-btn:12px;--r-badge:6px;--r-pill:999px;
  --shadow-card:0 24px 60px rgba(0,0,0,.45),inset 0 1px 0 rgba(255,255,255,.06);
  --shadow-hover:0 32px 72px rgba(0,0,0,.58),inset 0 1px 0 rgba(255,255,255,.09);
  --glow:0 0 32px rgba(31,178,196,.45);
  --sec:88px;--gap:24px;
  --ease:cubic-bezier(.2,.7,.3,1);--dur:240ms;
  --font-cn:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif;
  --font-num:'Inter','DIN Alternate',system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg-0);color:var(--text-1);
  font-family:var(--font-cn);font-size:16px;line-height:1.8;letter-spacing:.02em;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color var(--dur) var(--ease)}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none;padding:0}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
::selection{background:rgba(31,178,196,.32);color:#fff}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.sec{padding:var(--sec) 0;position:relative}
.sec-alt{background:var(--bg-1)}
.sec-head{max-width:760px;margin-bottom:44px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.08em;
  color:var(--primary);background:rgba(31,178,196,.10);border:1px solid var(--line-2);
  padding:6px 14px;border-radius:var(--r-pill);margin-bottom:16px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary-2);box-shadow:0 0 10px var(--primary-2)}
h1{font-size:clamp(30px,4.2vw,48px);line-height:1.25;font-weight:700;letter-spacing:.01em}
h2{font-size:clamp(24px,2.6vw,34px);line-height:1.3;font-weight:650}
h3{font-size:20px;line-height:1.4;font-weight:600}
h4{font-size:17px;line-height:1.5;font-weight:600}
.lead{color:var(--text-2);font-size:16px;line-height:1.85;margin-top:14px}
.muted{color:var(--text-3);font-size:14px;line-height:1.7}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);padding:14px 28px;font-weight:600;font-size:15px;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),
    border-color var(--dur) var(--ease),background-color var(--dur) var(--ease),filter var(--dur) var(--ease);
  white-space:nowrap;
}
.btn-primary{background:linear-gradient(120deg,#1FB2C4,#2FD9C6);color:#04141A;box-shadow:0 10px 28px rgba(31,178,196,.24)}
.btn-primary:hover{filter:brightness(1.08);box-shadow:var(--glow);transform:translateY(-2px)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 6px 16px rgba(31,178,196,.28)}
.btn-ghost{background:transparent;border:1px solid rgba(233,242,244,.25);color:var(--text-1)}
.btn-ghost:hover{border-color:var(--primary);background:rgba(31,178,196,.08);transform:translateY(-2px)}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;filter:none}

/* 徽章 / 标签 */
.badge{display:inline-flex;align-items:center;gap:6px;font-size:13px;line-height:1.4;padding:4px 10px;border-radius:var(--r-badge);background:rgba(31,178,196,.12);color:var(--primary);border:1px solid var(--line-2)}
.badge-accent{background:rgba(240,160,75,.14);color:var(--accent);border-color:rgba(240,160,75,.28)}
.badge-soft{background:rgba(255,255,255,.05);color:var(--text-2);border-color:var(--line-1)}
.tag-row{display:flex;flex-wrap:wrap;gap:10px}
.tag{font-size:13px;color:var(--text-2);border:1px solid var(--line-1);background:rgba(255,255,255,.03);padding:5px 12px;border-radius:var(--r-pill)}

/* 头部导航 */
.site-header{
  position:sticky;top:0;z-index:90;height:68px;
  background:rgba(7,12,17,.72);border-bottom:1px solid transparent;
  transition:background-color var(--dur) var(--ease),border-color var(--dur) var(--ease),backdrop-filter var(--dur) var(--ease);
}
.site-header.is-scrolled{
  background:rgba(7,12,17,.86);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border-bottom-color:var(--line-3);box-shadow:0 12px 34px rgba(0,0,0,.42);
}
.nav-wrap{display:flex;align-items:center;gap:16px;height:68px}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  width:34px;height:34px;border-radius:10px;flex:0 0 auto;
  background:linear-gradient(140deg,#1FB2C4,#2FD9C6);color:#04141A;
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;
  box-shadow:0 8px 20px rgba(31,178,196,.28);
}
.logo-text{font-size:17px;font-weight:700;white-space:nowrap;letter-spacing:.01em}
.logo-text em{font-style:normal;color:var(--primary-2)}

.nav-search{
  flex:1 1 auto;display:flex;align-items:center;gap:10px;min-width:220px;max-width:480px;
  background:rgba(255,255,255,.05);border:1px solid var(--line-2);border-radius:var(--r-pill);
  padding:0 8px 0 16px;height:44px;transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.nav-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 4px rgba(31,178,196,.14);background:rgba(31,178,196,.06)}
.nav-search svg{flex:0 0 auto;color:var(--text-3)}
.nav-search input{
  flex:1 1 auto;min-width:0;background:transparent;border:0;outline:none;
  color:var(--text-1);font-size:14px;height:100%;
}
.nav-search input::placeholder{color:var(--text-3)}
.nav-search button{
  flex:0 0 auto;height:32px;padding:0 16px;border-radius:var(--r-pill);font-size:13px;font-weight:600;
  background:linear-gradient(120deg,#1FB2C4,#2FD9C6);color:#04141A;
  transition:filter var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.nav-search button:hover{filter:brightness(1.08);box-shadow:0 0 20px rgba(31,178,196,.4)}

.nav-links{display:flex;align-items:center;gap:2px;flex:0 0 auto}
.nav-links a{
  position:relative;font-size:12.5px;color:var(--text-2);padding:8px 7px;border-radius:8px;
  white-space:nowrap;transition:color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.nav-links a:hover{color:var(--text-1);background:rgba(255,255,255,.04)}
.nav-links a.is-active{color:var(--primary-2)}
.nav-links a.is-active::after{
  content:"";position:absolute;left:7px;right:7px;bottom:2px;height:2px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 10px var(--primary);
}
.nav-cta{flex:0 0 auto;padding:11px 20px;font-size:14px}

.nav-more{position:relative;display:none;flex:0 0 auto}
.nav-more summary{
  list-style:none;cursor:pointer;font-size:13px;color:var(--text-2);padding:9px 14px;border-radius:var(--r-pill);
  border:1px solid var(--line-1);background:rgba(255,255,255,.03);display:flex;align-items:center;gap:6px;
}
.nav-more summary::-webkit-details-marker{display:none}
.nav-more summary:hover{color:var(--text-1);border-color:var(--line-2)}
.more-panel{
  position:absolute;right:0;top:calc(100% + 12px);min-width:210px;padding:8px;z-index:80;
  background:var(--bg-3);border:1px solid var(--line-2);border-radius:var(--r-panel);
  box-shadow:var(--shadow-card);display:flex;flex-direction:column;gap:2px;
}
.more-panel a{font-size:14px;color:var(--text-2);padding:10px 12px;border-radius:8px}
.more-panel a:hover{color:var(--text-1);background:rgba(31,178,196,.10)}

.nav-burger{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line-1);
  background:rgba(255,255,255,.04);align-items:center;justify-content:center;flex:0 0 auto;
}
.nav-burger span{display:block;width:18px;height:2px;background:var(--text-1);border-radius:2px;position:relative}
.nav-burger span::before,.nav-burger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text-1);border-radius:2px;
}
.nav-burger span::before{top:-6px}
.nav-burger span::after{top:6px}

.mobile-panel{
  display:none;background:rgba(9,15,20,.98);border-bottom:1px solid var(--line-2);
  padding:18px 0 26px;backdrop-filter:blur(16px);
}
.mobile-panel.open{display:block}
.mobile-panel .nav-search{max-width:none;width:100%;margin-bottom:16px}
.mobile-links{display:flex;flex-direction:column;gap:4px;margin-bottom:18px}
.mobile-links a{font-size:15px;color:var(--text-2);padding:12px 14px;border-radius:10px;border:1px solid transparent}
.mobile-links a:hover,.mobile-links a.is-active{color:var(--text-1);background:rgba(31,178,196,.10);border-color:var(--line-2)}

/* Hero */
.hero{position:relative;overflow:hidden;padding:96px 0 88px;background:var(--bg-0)}
.hero-media{position:absolute;inset:0;z-index:0}
.hero-media img{width:100%;height:100%;object-fit:cover;opacity:.5}
.hero-overlay{
  position:absolute;inset:0;z-index:1;
  background:
    radial-gradient(900px 420px at 78% 12%,rgba(31,178,196,.22),transparent 68%),
    linear-gradient(180deg,rgba(7,12,17,.72) 0%,rgba(7,12,17,.9) 58%,var(--bg-0) 100%);
}
.hero-cloud{position:absolute;inset:auto 0 0 0;height:220px;z-index:1;opacity:.07;pointer-events:none}
.hero-inner{position:relative;z-index:2}
.hero-copy{max-width:660px}
.hero h1{margin-top:18px}
.hero-sub{color:var(--text-2);font-size:17px;line-height:1.85;margin-top:18px;max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-tags{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero-tags li{
  font-size:13px;color:var(--text-2);border:1px solid var(--line-1);background:rgba(255,255,255,.04);
  padding:7px 14px;border-radius:var(--r-pill);display:flex;align-items:center;gap:7px;
}
.hero-tags li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--primary-2);box-shadow:0 0 8px var(--primary-2)}

/* 信任条 */
.trust{border-top:1px solid var(--line-1);border-bottom:1px solid var(--line-1);background:var(--bg-1)}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap);padding:38px 0}
.trust-item{padding:0 4px}
.trust-num{font-family:var(--font-num);font-size:34px;font-weight:600;line-height:1.1;color:var(--text-1)}
.trust-num span{color:var(--primary-2);font-size:20px;margin-left:2px}
.trust-label{font-size:14px;color:var(--text-3);margin-top:8px}

/* 玻璃卡片 */
.glass{
  background:var(--glass);border:1px solid var(--line-2);border-radius:var(--r-card);
  box-shadow:var(--shadow-card);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
}

/* 功能分组 */
.feature-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;margin-bottom:72px}
.feature-row:last-child{margin-bottom:0}
.feature-row.reverse .feature-copy{order:2}
.feature-row.reverse .feature-media{order:1}
.feature-icon{
  width:48px;height:48px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  background:rgba(31,178,196,.12);border:1px solid var(--line-2);color:var(--primary-2);margin-bottom:20px;
}
.feature-copy h3{margin-bottom:12px}
.feature-copy p{color:var(--text-2);font-size:15px;line-height:1.85}
.feature-list{margin-top:22px;display:flex;flex-direction:column;gap:12px}
.feature-list li{display:flex;gap:12px;font-size:15px;color:var(--text-2)}
.feature-list li::before{
  content:"";flex:0 0 auto;width:8px;height:8px;margin-top:9px;border-radius:3px;
  background:linear-gradient(140deg,#1FB2C4,#2FD9C6);box-shadow:0 0 10px rgba(31,178,196,.5);
}
.feature-media{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line-2);box-shadow:var(--shadow-card)}
.feature-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform 480ms var(--ease)}
.feature-media:hover img{transform:scale(1.03)}
.feature-row.reverse .feature-media{transform:translateY(-14px)}

/* 场景卡 */
.scene-grid{display:grid;grid-template-columns:1.35fr 1fr;grid-template-rows:auto auto;gap:var(--gap)}
.scene-card{
  position:relative;overflow:hidden;border-radius:var(--r-card);border:1px solid var(--line-2);
  background:var(--glass);box-shadow:var(--shadow-card);padding:28px;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-3)}
.scene-card.big{grid-row:span 2;display:flex;flex-direction:column;justify-content:flex-end;min-height:420px;padding:32px}
.scene-card.big .scene-bg{position:absolute;inset:0;z-index:0}
.scene-card.big .scene-bg img{width:100%;height:100%;object-fit:cover;opacity:.42}
.scene-card.big::after{
  content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(180deg,rgba(7,12,17,.25) 0%,rgba(7,12,17,.9) 78%);
}
.scene-card.big > *{position:relative;z-index:2}
.scene-card h3{margin:14px 0 10px}
.scene-card p{color:var(--text-2);font-size:15px;line-height:1.8}

/* 案例卡 */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);align-items:start}
.case-card{padding:26px;border-radius:var(--r-card);border:1px solid var(--line-1);background:var(--bg-2);transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease)}
.case-card:hover{transform:translateY(-4px);border-color:var(--line-3);box-shadow:var(--shadow-hover)}
.case-card:nth-child(2){margin-top:34px}
.case-card:nth-child(3){margin-top:12px}
.case-value{font-family:var(--font-num);font-size:38px;font-weight:600;color:var(--accent);line-height:1.1;margin:16px 0 6px}
.case-text{font-size:14.5px;color:var(--text-2);line-height:1.8}
.case-quote{
  margin-top:18px;padding-top:16px;border-top:1px solid var(--line-1);
  font-size:14px;color:var(--text-3);line-height:1.7;
}

/* 价格 */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);align-items:stretch}
.price-card{
  position:relative;display:flex;flex-direction:column;padding:32px 26px;border-radius:var(--r-card);
  border:1px solid var(--line-1);background:var(--bg-2);box-shadow:var(--shadow-card);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.price-card:hover{transform:translateY(-4px);border-color:var(--line-3)}
.price-card.featured{
  transform:scale(1.03);border-color:var(--line-3);background:linear-gradient(165deg,rgba(31,178,196,.12),rgba(255,255,255,.02));
  box-shadow:0 30px 70px rgba(0,0,0,.5),0 0 0 1px rgba(31,178,196,.22);
}
.price-card.featured:hover{transform:scale(1.03) translateY(-4px)}
.price-flag{position:absolute;top:-13px;right:22px}
.price-name{font-size:18px;font-weight:600}
.price-cycle{font-size:13px;color:var(--text-3);margin-top:6px}
.price-amount{font-family:var(--font-num);font-size:38px;font-weight:600;line-height:1.1;margin:20px 0 4px}
.price-amount small{font-size:14px;color:var(--text-3);font-family:var(--font-cn);margin-left:6px}
.price-list{margin:24px 0 28px;display:flex;flex-direction:column;gap:11px;flex:1}
.price-list li{display:flex;gap:10px;font-size:14.5px;color:var(--text-2)}
.price-list li::before{content:"✓";color:var(--primary-2);font-size:13px;line-height:1.7}

/* 资讯 */
.news-top{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:36px}
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.chip{font-size:13px;color:var(--text-2);padding:7px 15px;border-radius:var(--r-pill);border:1px solid var(--line-1);background:rgba(255,255,255,.03);transition:all var(--dur) var(--ease)}
.chip:hover,.chip.is-on{color:#04141A;background:linear-gradient(120deg,#1FB2C4,#2FD9C6);border-color:transparent;font-weight:600}
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap)}
.post-card{
  display:flex;flex-direction:column;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line-1);background:var(--bg-2);box-shadow:var(--shadow-card);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.post-card:hover{transform:translateY(-4px);border-color:var(--line-3);box-shadow:var(--shadow-hover)}
.post-cover{display:block;position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-1)}
.post-cover img{width:100%;height:100%;object-fit:cover;transition:transform 520ms var(--ease)}
.post-card:hover .post-cover img{transform:scale(1.05)}
.post-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.post-cat{align-self:flex-start;margin-bottom:12px}
.post-title{
  font-size:16.5px;font-weight:600;line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-excerpt{
  margin-top:10px;font-size:14px;color:var(--text-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{margin-top:16px;padding-top:14px;border-top:1px solid var(--line-1);font-size:13px;color:var(--text-3);display:flex;justify-content:space-between;gap:10px}
.post-link{position:absolute;inset:0;z-index:3}
.empty-state{
  padding:56px 24px;text-align:center;border-radius:var(--r-card);
  border:1px dashed var(--line-2);background:rgba(255,255,255,.02);
}
.empty-state svg{color:var(--text-3);margin:0 auto 16px}
.empty-state p{color:var(--text-3);font-size:14px;margin-bottom:20px}
.skeleton{background:linear-gradient(90deg,rgba(255,255,255,.04),rgba(255,255,255,.09),rgba(255,255,255,.04));background-size:200% 100%;animation:shimmer 1.6s infinite linear;border-radius:10px}
@keyframes shimmer{0%{background-position:200% 0}100%{background-position:-200% 0}}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{border-radius:var(--r-panel);border:1px solid var(--line-1);background:var(--glass);overflow:hidden;transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease)}
.faq-item[open]{border-color:var(--line-3);box-shadow:0 14px 40px rgba(0,0,0,.34)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;font-size:16px;font-weight:600;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";font-family:var(--font-num);font-size:20px;color:var(--primary);flex:0 0 auto;
  transition:transform var(--dur) var(--ease);line-height:1;
}
.faq-item[open] summary::after{transform:rotate(180deg)}
.faq-body{padding:0 22px 22px;color:var(--text-2);font-size:15px;line-height:1.85}

/* CTA */
.cta-band{position:relative;overflow:hidden;border-radius:20px;border:1px solid var(--line-2);padding:52px 40px;background:var(--bg-2);box-shadow:var(--shadow-card)}
.cta-band::before{
  content:"";position:absolute;inset:-40% -10% auto -10%;height:120%;
  background:radial-gradient(560px 240px at 50% 0%,rgba(31,178,196,.24),transparent 70%);
}
.cta-band .cta-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px}
.cta-band h2{max-width:620px}
.cta-band p{color:var(--text-2);font-size:15px;margin-top:12px;max-width:560px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* 页脚 */
.site-footer{position:relative;background:var(--bg-1);border-top:1px solid var(--line-1);margin-top:var(--sec)}
.footer-cloud{position:absolute;top:-1px;left:0;right:0;height:70px;opacity:.07;pointer-events:none}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding:70px 0 46px}
.footer-brand p{font-size:14px;color:var(--text-2);line-height:1.8;margin-top:16px;max-width:280px}
.footer-social{display:flex;gap:10px;margin-top:20px}
.footer-social a{
  width:38px;height:38px;border-radius:11px;border:1px solid var(--line-1);background:rgba(255,255,255,.03);
  display:flex;align-items:center;justify-content:center;color:var(--text-2);
}
.footer-social a:hover{color:var(--primary-2);border-color:var(--line-3);background:rgba(31,178,196,.10)}
.footer-col h4{font-size:15px;margin-bottom:18px;color:var(--text-1)}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a,.footer-col li{font-size:14px;color:var(--text-2);line-height:1.75}
.footer-col a:hover{color:var(--primary-2)}
.footer-bottom{
  border-top:1px solid var(--line-1);padding:20px 0 26px;display:flex;flex-wrap:wrap;
  align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--text-3);
}

/* 响应式 */
@media (max-width:1199px){
  :root{--sec:72px}
  .nav-links a.cat-link{display:none}
  .nav-more{display:block}
  .nav-search{max-width:340px;min-width:180px}
  .post-grid{grid-template-columns:repeat(2,1fr)}
}
@media (min-width:1200px){
  .nav-more{display:none}
}
@media (max-width:991px){
  :root{--sec:64px;--gap:20px}
  .nav-wrap{flex-wrap:wrap;height:auto;padding:14px 0 16px;gap:12px}
  .site-header{height:auto}
  .nav-search{order:3;flex:1 1 100%;max-width:none;min-width:0}
  .nav-links{display:none}
  .nav-more{display:none}
  .nav-cta{margin-left:auto}
  .feature-row{grid-template-columns:1fr;gap:28px;margin-bottom:56px}
  .feature-row.reverse .feature-copy{order:1}
  .feature-row.reverse .feature-media{order:2}
  .feature-row.reverse .feature-media{transform:none}
  .scene-grid{grid-template-columns:1fr}
  .scene-card.big{min-height:320px}
  .case-grid{grid-template-columns:1fr;gap:18px}
  .case-card:nth-child(2),.case-card:nth-child(3){margin-top:0}
  .price-grid{grid-template-columns:1fr;gap:20px}
  .price-card.featured{transform:none}
  .price-card.featured:hover{transform:translateY(-4px)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:56px 0 36px}
  .trust-grid{grid-template-columns:repeat(2,1fr);gap:22px}
  .cta-band{padding:40px 28px}
}
@media (max-width:767px){
  :root{--sec:48px}
  .container{padding:0 16px}
  .nav-search{display:none}
  .nav-links{display:none}
  .nav-cta{display:none}
  .nav-burger{display:flex;margin-left:auto}
  .hero{padding:64px 0 60px}
  .hero-copy{max-width:none;text-align:center}
  .hero-actions{justify-content:center}
  .hero-tags{justify-content:center}
  .hero-sub{margin-left:auto;margin-right:auto}
  .post-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .cta-band{padding:32px 20px;border-radius:16px}
  .cta-band .cta-inner{flex-direction:column;align-items:flex-start}
  .trust-num{font-size:28px}
  .case-value{font-size:32px}
  .sec-head{margin-bottom:32px}
}
@media (max-width:479px){
  .btn{padding:13px 22px;font-size:14px}
  .hero-tags li{font-size:12.5px;padding:6px 11px}
  .faq-item summary{padding:16px;font-size:15px}
  .faq-body{padding:0 16px 18px;font-size:14.5px}
  .logo-text{font-size:15.5px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
:root{
  --bg-0:#070C11;
  --bg-1:#0C141B;
  --bg-2:#101C24;
  --primary:#1FB2C4;
  --primary-2:#2FD9C6;
  --accent:#F0A04B;
  --ok:#2FBF71;
  --warn:#E8B33A;
  --err:#E5484D;
  --text-1:#E9F2F4;
  --text-2:#A9BEC4;
  --text-3:#6F858C;
  --line-1:rgba(255,255,255,.10);
  --line-2:rgba(31,178,196,.16);
  --line-3:rgba(31,178,196,.32);
  --glass:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  --field:#0E1A20;
  --r-card:16px;
  --r-panel:12px;
  --r-btn:12px;
  --r-badge:6px;
  --r-pill:999px;
  --shadow-card:0 24px 60px rgba(0,0,0,.45),inset 0 1px 0 rgba(255,255,255,.06);
  --shadow-hover:0 32px 72px rgba(0,0,0,.55),inset 0 1px 0 rgba(255,255,255,.09);
  --glow:0 0 32px rgba(31,178,196,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
  --space-section:48px;
  --nav-h:72px;
}
@media (min-width:768px){:root{--space-section:64px;}}
@media (min-width:1200px){:root{--space-section:88px;}}

/* ===== 基础 reset ===== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei','Noto Sans SC',system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:.02em;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;padding:0;}
ul,ol{list-style:none;}
a{color:inherit;text-decoration:none;transition:color 240ms var(--ease),border-color 240ms var(--ease),background-color 240ms var(--ease);}
img{max-width:100%;display:block;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input{font:inherit;color:inherit;}
table{border-collapse:collapse;width:100%;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;}

/* ===== 排版 ===== */
h1{font-size:clamp(28px,4.2vw,46px);line-height:1.25;font-weight:700;}
h2{font-size:clamp(23px,2.6vw,34px);line-height:1.3;font-weight:650;}
h3{font-size:20px;line-height:1.4;font-weight:600;}
h4{font-size:17px;line-height:1.5;font-weight:600;}
.num{font-family:'Inter','DIN Alternate',system-ui,sans-serif;font-variant-numeric:tabular-nums;}

/* ===== 容器 ===== */
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 16px;
}
@media (min-width:768px){.container{padding:0 20px;}}
@media (min-width:1200px){.container{padding:0 24px;}}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  height:var(--nav-h);
  background:rgba(7,12,17,.72);
  border-bottom:1px solid transparent;
  transition:background-color 240ms var(--ease),border-color 240ms var(--ease),backdrop-filter 240ms var(--ease);
}
.site-header.is-stuck{
  background:rgba(7,12,17,.86);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom-color:var(--line-3);
  box-shadow:0 12px 40px rgba(0,0,0,.35);
}
.nav-inner{
  height:var(--nav-h);
  display:flex;
  align-items:center;
  gap:14px;
}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:34px;height:34px;border-radius:10px;
  display:grid;place-items:center;
  font-size:16px;font-weight:700;color:#04141A;
  background:linear-gradient(120deg,var(--primary),var(--primary-2));
  box-shadow:0 8px 22px rgba(31,178,196,.32);
}
.logo-text{font-size:17px;font-weight:650;letter-spacing:.02em;white-space:nowrap;}
.logo-text em{font-style:normal;color:var(--primary-2);}

.search-form{
  display:none;
  position:relative;
  flex:1 1 auto;
  max-width:540px;
  margin:0 auto;
}
.search-form input{
  width:100%;
  height:44px;
  padding:0 52px 0 46px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.05);
  border:1px solid var(--line-2);
  color:var(--text-1);
  font-size:14px;
  transition:border-color 240ms var(--ease),box-shadow 240ms var(--ease),background-color 240ms var(--ease);
}
.search-form input::placeholder{color:var(--text-3);}
.search-form input:focus{
  outline:none;
  border-color:var(--line-3);
  background:rgba(255,255,255,.07);
  box-shadow:0 0 0 4px rgba(31,178,196,.12);
}
.search-icon{
  position:absolute;left:16px;top:50%;transform:translateY(-50%);
  color:var(--text-3);pointer-events:none;display:flex;
}
.search-submit{
  position:absolute;right:6px;top:50%;transform:translateY(-50%);
  width:34px;height:34px;border-radius:var(--r-pill);
  display:grid;place-items:center;
  color:#04141A;
  background:linear-gradient(120deg,var(--primary),var(--primary-2));
  transition:filter 240ms var(--ease),transform 240ms var(--ease);
}
.search-submit:hover{filter:brightness(1.08);}
.search-submit:active{transform:translateY(-50%) scale(.96);}

.nav-links{display:none;align-items:center;gap:4px;flex:0 0 auto;}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:10px 12px;
  font-size:14px;
  color:var(--text-2);
  border-radius:var(--r-panel);
  white-space:nowrap;
}
.nav-links a:hover{color:var(--text-1);background:rgba(31,178,196,.08);}
.nav-links a.is-active{color:var(--text-1);}
.nav-links a.is-active::after{
  content:"";
  position:absolute;left:12px;right:12px;bottom:2px;
  height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--primary-2));
  box-shadow:0 0 12px rgba(31,178,196,.7);
}
.nav-cta{display:none;}

.nav-toggle{
  margin-left:auto;
  width:42px;height:42px;
  display:grid;place-items:center;
  border:1px solid var(--line-1);
  border-radius:var(--r-btn);
  background:var(--glass);
  color:var(--text-1);
}
.nav-search-btn{
  width:42px;height:42px;
  display:grid;place-items:center;
  border:1px solid var(--line-1);
  border-radius:var(--r-btn);
  background:var(--glass);
  color:var(--text-1);
}
.nav-actions{display:flex;align-items:center;gap:8px;margin-left:auto;}

.mobile-panel{
  display:none;
  position:fixed;
  inset:var(--nav-h) 0 auto 0;
  z-index:55;
  background:rgba(9,15,20,.97);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line-2);
  padding:18px 16px 24px;
}
.mobile-panel.is-open{display:block;}
.mobile-panel .search-form{display:block;max-width:none;margin:0 0 16px;}
.mobile-panel nav{display:flex;flex-direction:column;gap:6px;}
.mobile-panel nav a{
  padding:13px 14px;
  border-radius:var(--r-panel);
  background:var(--glass);
  border:1px solid var(--line-1);
  font-size:15px;
  color:var(--text-1);
}
.mobile-panel nav a.is-active{border-color:var(--line-3);box-shadow:inset 0 0 0 1px rgba(31,178,196,.2);}
.mobile-panel .btn{margin-top:14px;width:100%;justify-content:center;}

@media (min-width:768px){
  .search-form{display:block;order:3;flex:1 1 100%;max-width:none;margin:0;}
  .nav-inner{flex-wrap:wrap;}
  .nav-toggle{display:none;}
  .nav-search-btn{display:none;}
  .nav-links{
    display:flex;
    order:4;
    flex:1 1 100%;
    overflow-x:auto;
    scrollbar-width:none;
    gap:2px;
  }
  .nav-links::-webkit-scrollbar{display:none;}
}
@media (min-width:992px){
  .nav-inner{flex-wrap:nowrap;}
  .search-form{order:2;flex:0 1 360px;max-width:360px;}
  .nav-links{order:3;flex:0 0 auto;margin-left:auto;overflow:visible;}
}
@media (min-width:1200px){
  .search-form{flex:1 1 auto;max-width:560px;}
  .nav-links a{padding:10px 14px;}
}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  transition:transform 240ms var(--ease),box-shadow 240ms var(--ease),filter 240ms var(--ease),border-color 240ms var(--ease),background-color 240ms var(--ease);
}
.btn-primary{
  color:#04141A;
  background:linear-gradient(120deg,var(--primary),var(--primary-2));
  box-shadow:0 12px 30px rgba(31,178,196,.24);
}
.btn-primary:hover{filter:brightness(1.08);box-shadow:var(--glow);transform:translateY(-2px);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  color:var(--text-1);
  border-color:rgba(233,242,244,.25);
  background:rgba(255,255,255,.02);
}
.btn-ghost:hover{border-color:var(--primary);background:rgba(31,178,196,.08);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{padding:10px 20px;font-size:14px;}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}

/* ===== 标签 / 徽章 ===== */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;
  border-radius:var(--r-badge);
  font-size:13px;line-height:1.6;
  color:var(--primary-2);
  background:rgba(31,178,196,.12);
  border:1px solid var(--line-2);
}
.badge-accent{color:var(--accent);background:rgba(240,160,75,.12);border-color:rgba(240,160,75,.3);}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  display:inline-flex;align-items:center;
  padding:6px 14px;
  border-radius:var(--r-pill);
  font-size:13px;
  color:var(--text-2);
  background:rgba(255,255,255,.04);
  border:1px solid var(--line-1);
}

/* ===== 板块 ===== */
.section{padding:var(--space-section) 0;}
.section-head{max-width:720px;margin-bottom:32px;}
.section-head h2{margin-bottom:12px;}
.section-head p{color:var(--text-2);font-size:15px;}
.eyebrow{
  display:inline-block;
  font-size:13px;
  letter-spacing:.14em;
  color:var(--primary-2);
  margin-bottom:14px;
}

/* ===== 面包屑 ===== */
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--text-3);
  padding-top:28px;
}
.crumb a:hover{color:var(--primary-2);}
.crumb .sep{color:var(--text-3);opacity:.6;}
.crumb .current{color:var(--text-2);}

/* ===== Hero ===== */
.hero{
  position:relative;
  overflow:hidden;
  background:var(--bg-0);
  padding-bottom:var(--space-section);
}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center right;
  opacity:.32;
}
.hero-bg::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(7,12,17,.96) 0%,rgba(7,12,17,.78) 46%,rgba(7,12,17,.42) 100%),
             linear-gradient(180deg,rgba(7,12,17,.55) 0%,rgba(7,12,17,.95) 100%);
}
.hero-cloud{
  position:absolute;inset:auto 0 0 0;
  width:100%;height:120px;
  opacity:.08;
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;padding-top:38px;}
.hero-content{max-width:660px;}
.hero h1{margin:18px 0 18px;}
.hero-lede{font-size:17px;line-height:1.85;color:var(--text-2);max-width:600px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:28px 0 24px;}
.hero-stats{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:12px;
  margin-top:34px;
  padding:20px;
  border-radius:var(--r-card);
  background:var(--glass);
  border:1px solid var(--line-1);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
}
.hero-stat .v{
  font-size:clamp(22px,3vw,30px);
  font-weight:600;
  color:var(--accent);
  line-height:1.2;
}
.hero-stat .k{font-size:13px;color:var(--text-3);margin-top:4px;}

/* ===== 图文交替 ===== */
.zig{
  display:grid;
  gap:28px;
  align-items:center;
}
.zig + .zig{margin-top:36px;}
.zig-media{
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--line-1);
  background:var(--glass);
  box-shadow:var(--shadow-card);
  aspect-ratio:16/10;
}
.zig-media img{width:100%;height:100%;object-fit:cover;}
.zig-body h3{margin:14px 0 10px;}
.zig-body p{color:var(--text-2);font-size:15px;line-height:1.8;}
.point-list{margin-top:16px;display:grid;gap:10px;}
.point-list li{
  position:relative;
  padding-left:20px;
  font-size:14px;
  color:var(--text-2);
  line-height:1.75;
}
.point-list li::before{
  content:"";
  position:absolute;left:0;top:.62em;
  width:6px;height:6px;border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 10px rgba(31,178,196,.7);
}
.icon-sq{
  width:44px;height:44px;border-radius:12px;
  display:grid;place-items:center;
  color:var(--primary-2);
  background:rgba(31,178,196,.1);
  border:1px solid var(--line-2);
}
@media (min-width:992px){
  .zig{grid-template-columns:1fr 1fr;gap:56px;}
  .zig.reverse .zig-media{order:2;}
  .zig + .zig{margin-top:56px;}
}

/* ===== 步骤编号 ===== */
.steps{
  margin-top:36px;
  display:grid;
  gap:16px;
}
.step{
  position:relative;
  display:flex;
  gap:18px;
  padding:22px;
  border-radius:var(--r-card);
  background:var(--glass);
  border:1px solid var(--line-1);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  transition:transform 240ms var(--ease),border-color 240ms var(--ease),box-shadow 240ms var(--ease);
}
.step:hover{transform:translateY(-4px);border-color:var(--line-3);box-shadow:var(--shadow-hover);}
.step-no{
  flex:0 0 auto;
  width:46px;height:46px;
  display:grid;place-items:center;
  border-radius:12px;
  font-size:16px;font-weight:600;
  color:var(--primary-2);
  background:rgba(31,178,196,.1);
  border:1px solid var(--line-2);
}
.step h4{margin-bottom:6px;}
.step p{font-size:14px;color:var(--text-2);line-height:1.75;}
@media (min-width:992px){
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
}

/* ===== 场景卡片 ===== */
.scene-grid{display:grid;gap:18px;}
.scene-card{
  position:relative;
  padding:26px;
  border-radius:var(--r-card);
  background:var(--glass);
  border:1px solid var(--line-1);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  box-shadow:var(--shadow-card);
  transition:transform 240ms var(--ease),border-color 240ms var(--ease),box-shadow 240ms var(--ease);
  overflow:hidden;
}
.scene-card:hover{transform:translateY(-4px);border-color:var(--line-3);box-shadow:var(--shadow-hover);}
.scene-card h3{margin:14px 0 10px;}
.scene-card p{font-size:14px;color:var(--text-2);line-height:1.8;}
.scene-card.is-wide{background:linear-gradient(160deg,rgba(31,178,196,.12),rgba(255,255,255,.02));}
.scene-meta{
  display:flex;flex-wrap:wrap;gap:16px;margin-top:18px;
  padding-top:16px;border-top:1px solid var(--line-1);
}
.scene-meta div{font-size:13px;color:var(--text-3);}
.scene-meta strong{display:block;font-size:20px;color:var(--accent);font-weight:600;}
@media (min-width:768px){
  .scene-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .scene-card.is-wide{grid-column:span 2;}
}
@media (min-width:992px){
  .scene-grid{grid-template-columns:repeat(3,minmax(0,1fr));}
  .scene-card.is-wide{grid-column:span 2;}
}

/* ===== FAQ ===== */
.faq-list{display:grid;gap:12px;}
.faq-item{
  border-radius:var(--r-panel);
  background:var(--glass);
  border:1px solid var(--line-1);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  overflow:hidden;
  transition:border-color 240ms var(--ease),box-shadow 240ms var(--ease);
}
.faq-item.is-open{border-color:var(--line-3);box-shadow:0 0 0 1px rgba(31,178,196,.14);}
.faq-q{
  width:100%;
  display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  padding:18px 20px;
  text-align:left;
  font-size:16px;font-weight:600;
  color:var(--text-1);
}
.faq-q:hover{color:var(--primary-2);}
.faq-sign{
  flex:0 0 auto;
  width:24px;height:24px;border-radius:6px;
  display:grid;place-items:center;
  color:var(--primary-2);
  border:1px solid var(--line-2);
  transition:transform 240ms var(--ease);
}
.faq-item.is-open .faq-sign{transform:rotate(180deg);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height 320ms var(--ease);
}
.faq-a p{
  padding:0 20px 20px;
  font-size:15px;
  line-height:1.85;
  color:var(--text-2);
}

/* ===== 相关分类 ===== */
.related-grid{display:grid;gap:16px;}
.related-card{
  display:block;
  padding:22px;
  border-radius:var(--r-card);
  background:var(--glass);
  border:1px solid var(--line-1);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  transition:transform 240ms var(--ease),border-color 240ms var(--ease),box-shadow 240ms var(--ease);
}
.related-card:hover{transform:translateY(-4px);border-color:var(--line-3);box-shadow:var(--shadow-hover);}
.related-card h4{margin-bottom:8px;}
.related-card p{font-size:14px;color:var(--text-2);line-height:1.75;}
.related-card .go{
  display:inline-flex;align-items:center;gap:6px;
  margin-top:14px;font-size:13px;color:var(--primary-2);
}
@media (min-width:768px){.related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (min-width:992px){.related-grid{grid-template-columns:repeat(4,minmax(0,1fr));}}

/* ===== 底部 CTA ===== */
.cta-band{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-card);
  padding:36px 24px;
  background:linear-gradient(150deg,rgba(31,178,196,.18),rgba(12,20,27,.9) 60%),var(--glass);
  border:1px solid var(--line-2);
  text-align:center;
}
.cta-band::before{
  content:"";
  position:absolute;left:50%;top:-40%;
  width:min(760px,120%);height:340px;
  transform:translateX(-50%);
  background:radial-gradient(closest-side,rgba(47,217,198,.22),transparent 72%);
  pointer-events:none;
}
.cta-band > *{position:relative;z-index:1;}
.cta-band h2{margin-bottom:12px;}
.cta-band p{color:var(--text-2);font-size:15px;max-width:640px;margin:0 auto 24px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}

/* ===== 页脚 ===== */
.site-footer{
  position:relative;
  margin-top:var(--space-section);
  background:var(--bg-1);
  border-top:1px solid var(--line-1);
  padding:56px 0 24px;
}
.footer-cloud{
  position:absolute;left:0;right:0;top:-1px;
  width:100%;height:70px;opacity:.08;
  pointer-events:none;
}
.footer-grid{display:grid;gap:32px;}
.footer-brand .logo{margin-bottom:14px;}
.footer-brand p{font-size:14px;color:var(--text-2);max-width:320px;line-height:1.8;}
.footer-social{display:flex;gap:10px;margin-top:18px;}
.footer-social a{
  width:38px;height:38px;border-radius:10px;
  display:grid;place-items:center;
  color:var(--text-2);
  background:rgba(255,255,255,.04);
  border:1px solid var(--line-1);
}
.footer-social a:hover{color:var(--primary-2);border-color:var(--line-3);background:rgba(31,178,196,.1);}
.footer-col h4{margin-bottom:16px;font-size:15px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14px;color:var(--text-2);}
.footer-col a:hover{color:var(--primary-2);}
.footer-contact li{font-size:14px;color:var(--text-2);line-height:1.8;}
.footer-bottom{
  margin-top:40px;padding-top:20px;
  border-top:1px solid var(--line-1);
  display:flex;flex-wrap:wrap;gap:10px 24px;
  align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--primary-2);}
@media (min-width:768px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (min-width:992px){
  .footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}
}

/* ===== 动效降级 ===== */
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: article */
:root{
  --bg-0:#070C11;
  --bg-1:#0C141B;
  --bg-2:#101C24;
  --primary:#1FB2C4;
  --primary-2:#2FD9C6;
  --accent:#F0A04B;
  --text-1:#E9F2F4;
  --text-2:#A9BEC4;
  --text-3:#6F858C;
  --ok:#2FBF71;
  --warn:#E8B33A;
  --err:#E5484D;
  --line-1:rgba(255,255,255,.10);
  --line-2:rgba(31,178,196,.16);
  --line-3:rgba(31,178,196,.32);
  --glass:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  --r-card:16px;
  --r-panel:12px;
  --r-btn:12px;
  --r-badge:6px;
  --shadow-card:0 24px 60px rgba(0,0,0,.45), inset 0 1px 0 rgba(255,255,255,.06);
  --shadow-hover:0 32px 72px rgba(0,0,0,.58), inset 0 1px 0 rgba(255,255,255,.08);
  --dur:240ms;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:.02em;
  -webkit-font-smoothing:antialiased;
}
img,svg{max-width:100%}
img{display:block}
a{color:inherit;text-decoration:none;transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),background-color var(--dur) var(--ease)}
button,input{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:650;line-height:1.35;letter-spacing:.01em}
p{margin:0}
:focus-visible{outline:2px solid var(--primary-2);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section-head{margin-bottom:36px}
.section-head h2{font-size:clamp(24px,2.6vw,34px);font-weight:650}
.section-head p{margin-top:12px;color:var(--text-2);font-size:15px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--primary-2);letter-spacing:.14em;
  text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--primary-2);opacity:.8}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease),background-color var(--dur) var(--ease),color var(--dur) var(--ease);
  will-change:transform;
}
.btn-primary{
  background:linear-gradient(120deg,#1FB2C4,#2FD9C6);
  color:#04141A;
  box-shadow:0 10px 26px rgba(31,178,196,.24);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 32px rgba(31,178,196,.45),0 14px 30px rgba(0,0,0,.4);filter:brightness(1.08)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 6px 18px rgba(31,178,196,.3)}
.btn-ghost{
  background:transparent;color:var(--text-1);
  border:1px solid rgba(233,242,244,.25);
}
.btn-ghost:hover{border-color:var(--primary);background:rgba(31,178,196,.08);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:90;
  height:74px;
  background:rgba(7,12,17,.72);
  border-bottom:1px solid transparent;
  transition:background-color var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.site-header.is-scrolled{
  background:rgba(7,12,17,.88);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom-color:var(--line-3);
  box-shadow:0 12px 34px rgba(0,0,0,.45);
}
.header-inner{display:flex;align-items:center;gap:22px;height:74px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  width:34px;height:34px;border-radius:10px;
  display:grid;place-items:center;
  font-size:16px;font-weight:700;color:#04141A;
  background:linear-gradient(140deg,#1FB2C4,#2FD9C6);
  box-shadow:0 8px 20px rgba(31,178,196,.35);
}
.logo-text{font-size:18px;font-weight:600;letter-spacing:.02em;white-space:nowrap}
.logo-text em{font-style:normal;color:var(--primary-2)}
.nav-search{
  position:relative;flex:1 1 auto;max-width:540px;min-width:200px;
  display:flex;align-items:center;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line-2);
  border-radius:999px;
  padding:0 6px 0 16px;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.nav-search:focus-within{border-color:var(--line-3);box-shadow:0 0 0 4px rgba(31,178,196,.12)}
.nav-search svg{flex:0 0 auto;color:var(--text-3)}
.nav-search input{
  flex:1 1 auto;min-width:0;
  background:none;border:0;outline:none;
  padding:11px 10px;font-size:14px;color:var(--text-1);
}
.nav-search input::placeholder{color:var(--text-3)}
.nav-search button{
  flex:0 0 auto;width:34px;height:34px;border-radius:999px;
  display:grid;place-items:center;color:#04141A;
  background:linear-gradient(120deg,#1FB2C4,#2FD9C6);
  transition:filter var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.nav-search button:hover{filter:brightness(1.1);box-shadow:0 0 18px rgba(31,178,196,.45)}
.nav-links{display:flex;align-items:center;gap:20px;margin-left:auto}
.nav-links a{
  position:relative;font-size:14px;color:var(--text-2);padding:6px 0;white-space:nowrap;
}
.nav-links a:hover{color:var(--text-1)}
.nav-links a.is-active{color:var(--text-1)}
.nav-links a.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,#1FB2C4,#2FD9C6);box-shadow:0 0 12px rgba(31,178,196,.7);
}
.nav-more{position:relative;display:none}
.nav-more-btn{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--text-2);padding:6px 0}
.nav-more-btn:hover{color:var(--text-1)}
.nav-more-menu{
  position:absolute;top:calc(100% + 12px);right:0;min-width:190px;
  background:var(--bg-2);border:1px solid var(--line-2);border-radius:var(--r-panel);
  box-shadow:var(--shadow-card);padding:8px;
  display:none;flex-direction:column;gap:2px;
}
.nav-more:hover .nav-more-menu,.nav-more:focus-within .nav-more-menu{display:flex}
.nav-more-menu a{padding:9px 12px;border-radius:8px;font-size:14px;color:var(--text-2)}
.nav-more-menu a:hover{background:rgba(31,178,196,.1);color:var(--text-1)}
.nav-cta{flex:0 0 auto}
.menu-toggle{
  display:none;width:40px;height:40px;border-radius:10px;
  border:1px solid var(--line-1);color:var(--text-1);
  align-items:center;justify-content:center;
}
.menu-toggle:hover{border-color:var(--line-3);background:rgba(31,178,196,.08)}
.mobile-panel{
  display:none;position:absolute;left:0;right:0;top:100%;
  background:rgba(12,20,27,.98);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line-2);
  padding:16px 0 22px;
  box-shadow:0 24px 50px rgba(0,0,0,.5);
}
.mobile-panel.is-open{display:block}
.mobile-panel .nav-search{max-width:none;margin-bottom:16px}
.mobile-links{display:flex;flex-direction:column;gap:4px}
.mobile-links a{
  padding:12px 14px;border-radius:10px;font-size:15px;color:var(--text-2);
  border:1px solid transparent;
}
.mobile-links a:hover{background:rgba(31,178,196,.08);color:var(--text-1)}
.mobile-links a.is-active{border-color:var(--line-2);background:rgba(31,178,196,.1);color:var(--text-1)}

/* ============ 面包屑 ============ */
.crumb-bar{border-bottom:1px solid var(--line-1);background:var(--bg-1)}
.crumb{
  display:flex;align-items:center;gap:10px;
  padding:16px 0;font-size:13px;color:var(--text-3);
  overflow:hidden;white-space:nowrap;
}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--primary-2)}
.crumb .sep{color:var(--text-3);opacity:.6}
.crumb .current{color:var(--text-2);overflow:hidden;text-overflow:ellipsis;min-width:0}

/* ============ 文章头 ============ */
.article-hero{
  position:relative;
  padding:56px 0 44px;
  background:var(--bg-1);
  overflow:hidden;
}
.article-hero::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(760px 320px at 12% 0%,rgba(31,178,196,.16),transparent 70%);
  pointer-events:none;
}
.article-hero .container{position:relative;z-index:1}
.hero-cloud{
  position:absolute;left:0;right:0;bottom:-6px;height:70px;
  opacity:.08;pointer-events:none;
}
.article-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 12px;border-radius:var(--r-badge);
  font-size:13px;color:var(--primary-2);
  background:rgba(31,178,196,.12);
  border:1px solid var(--line-2);
}
.article-h1{
  margin-top:18px;
  font-size:clamp(30px,4.2vw,48px);
  line-height:1.25;
  font-weight:700;
  letter-spacing:.01em;
  max-width:900px;
}
.article-sub{margin-top:16px;font-size:16px;color:var(--text-2);max-width:760px}
.meta-row{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin-top:22px;font-size:13px;color:var(--text-3)}
.meta-item{display:inline-flex;align-items:center;gap:6px}
.meta-dot{width:3px;height:3px;border-radius:50%;background:var(--text-3);opacity:.6}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.icon-btn{
  width:40px;height:40px;border-radius:11px;
  display:grid;place-items:center;
  border:1px solid var(--line-1);background:rgba(255,255,255,.04);
  color:var(--text-2);
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.icon-btn:hover{border-color:var(--line-3);color:var(--primary-2);transform:translateY(-2px)}

/* ============ 正文布局 ============ */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 310px;
  gap:40px;
  align-items:start;
  padding:56px 0 88px;
}
.article-main{
  min-width:0;
  background:var(--glass);
  border:1px solid var(--line-1);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-card);
  padding:36px 40px 44px;
}
.article-body{
  max-width:780px;
  margin:0 auto;
  font-size:17px;
  line-height:1.85;
  color:var(--text-2);
  word-wrap:break-word;
  overflow-wrap:break-word;
}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  font-size:clamp(22px,2.2vw,28px);
  color:var(--text-1);
  margin:2.2em 0 .9em;
  padding-left:14px;
  border-left:4px solid var(--primary);
  line-height:1.4;
}
.article-body h3{font-size:19px;color:var(--text-1);margin:1.8em 0 .7em;font-weight:600}
.article-body h4{font-size:17px;color:var(--text-1);margin:1.5em 0 .6em;font-weight:600}
.article-body ul,.article-body ol{margin:0 0 1.2em 1.4em;line-height:1.8}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin-bottom:.45em}
.article-body li::marker{color:var(--primary)}
.article-body blockquote{
  margin:1.6em 0;padding:16px 22px;
  border-left:3px solid var(--primary);
  background:var(--glass);
  border-radius:0 12px 12px 0;
  color:var(--text-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body a{color:var(--primary-2);border-bottom:1px solid rgba(47,217,198,.3)}
.article-body a:hover{color:var(--accent);border-bottom-color:rgba(240,160,75,.5)}
.article-body img{border-radius:12px;margin:1.6em auto;max-width:100%;height:auto}
.article-body figure{margin:1.8em 0}
.article-body figcaption{text-align:center;font-size:13px;color:var(--text-3);margin-top:10px}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;
  border:1px solid rgba(255,255,255,.08);border-radius:12px;
  display:block;overflow-x:auto;white-space:nowrap;
}
.article-body thead{background:rgba(255,255,255,.05)}
.article-body th,.article-body td{
  border:1px solid rgba(255,255,255,.08);
  padding:11px 14px;text-align:left;color:var(--text-2);
}
.article-body th{color:var(--text-1);font-weight:600}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.02)}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:.92em;background:rgba(255,255,255,.06);
  border:1px solid var(--line-1);border-radius:6px;padding:1px 6px;color:var(--primary-2);
}
.article-body pre{
  background:#0E1A20;border:1px solid var(--line-1);border-radius:12px;
  padding:16px 18px;overflow-x:auto;margin:1.6em 0;
}
.article-body pre code{background:none;border:0;padding:0;color:var(--text-2)}
.article-body hr{border:0;border-top:1px solid var(--line-1);margin:2.2em 0}

/* ============ 侧栏 ============ */
.article-side{position:sticky;top:98px;display:flex;flex-direction:column;gap:20px}
.side-card{
  background:var(--glass);
  border:1px solid var(--line-1);
  border-radius:var(--r-card);
  padding:20px 22px;
  box-shadow:var(--shadow-card);
}
.side-card h3{
  font-size:15px;color:var(--text-1);font-weight:600;
  display:flex;align-items:center;gap:8px;margin-bottom:14px;
}
.side-card h3::before{
  content:"";width:3px;height:14px;border-radius:2px;
  background:linear-gradient(180deg,#1FB2C4,#2FD9C6);
}
.toc-list{display:flex;flex-direction:column;gap:2px;max-height:340px;overflow:auto}
.toc-list a{
  display:block;font-size:14px;color:var(--text-2);
  padding:8px 10px;border-radius:8px;border-left:2px solid transparent;
  line-height:1.6;
}
.toc-list a:hover{color:var(--text-1);background:rgba(31,178,196,.08)}
.toc-list a.is-current{color:var(--primary-2);border-left-color:var(--primary);background:rgba(31,178,196,.1)}
.side-empty{font-size:13px;color:var(--text-3);line-height:1.7}
.rel-list{display:flex;flex-direction:column;gap:12px}
.rel-list a{display:block;font-size:14px;color:var(--text-2);line-height:1.65}
.rel-list a:hover{color:var(--primary-2)}
.rel-list span{display:block;font-size:12px;color:var(--text-3);margin-top:4px}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.tag-cloud a{
  font-size:13px;color:var(--text-2);
  padding:5px 11px;border-radius:999px;
  border:1px solid var(--line-1);background:rgba(255,255,255,.03);
}
.tag-cloud a:hover{border-color:var(--line-3);color:var(--primary-2);background:rgba(31,178,196,.08)}

/* ============ 文末 ============ */
.article-foot{
  margin-top:40px;padding-top:26px;border-top:1px solid var(--line-1);
  display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;
}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}
.tag-row a,.tag-row span{
  font-size:13px;color:var(--text-2);
  padding:5px 12px;border-radius:var(--r-badge);
  border:1px solid var(--line-1);background:rgba(255,255,255,.03);
}
.tag-row a:hover{border-color:var(--line-3);color:var(--primary-2)}
.empty-state{
  max-width:780px;margin:0 auto;text-align:center;
  padding:52px 20px;
  border:1px dashed var(--line-1);border-radius:var(--r-card);
  background:rgba(255,255,255,.02);
}
.empty-state svg{color:var(--text-3);margin:0 auto 16px}
.empty-state p{font-size:14px;color:var(--text-3);margin-bottom:20px}

/* ============ 相关推荐 ============ */
.related-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:22px}
.post-card{
  display:flex;flex-direction:column;
  background:var(--glass);
  border:1px solid var(--line-1);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.post-card:hover{transform:translateY(-4px);border-color:var(--line-3);box-shadow:var(--shadow-hover)}
.post-card .thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-2)}
.post-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease)}
.post-card:hover .thumb img{transform:scale(1.05)}
.post-card .body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.chip{
  align-self:flex-start;font-size:12px;color:var(--primary-2);
  padding:4px 10px;border-radius:999px;
  background:rgba(31,178,196,.12);border:1px solid var(--line-2);
}
.post-card h3{
  font-size:17px;color:var(--text-1);line-height:1.55;font-weight:600;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card .excerpt{
  font-size:14px;color:var(--text-2);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card .meta{margin-top:auto;font-size:13px;color:var(--text-3);display:flex;gap:10px;align-items:center}

/* ============ CTA ============ */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--bg-1);
  border-top:1px solid var(--line-1);
  border-bottom:1px solid var(--line-1);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(620px 260px at 78% 50%,rgba(31,178,196,.2),transparent 70%);
  pointer-events:none;
}
.cta-inner{
  position:relative;z-index:1;
  display:flex;align-items:center;justify-content:space-between;
  gap:26px;flex-wrap:wrap;
  padding:52px 0;
}
.cta-inner h2{font-size:clamp(22px,2.4vw,30px);color:var(--text-1)}
.cta-inner p{margin-top:10px;font-size:15px;color:var(--text-2);max-width:620px}
.cta-cloud{position:absolute;left:0;right:0;top:50%;height:80px;transform:translateY(-50%);opacity:.07;pointer-events:none}

/* ============ 页脚 ============ */
.site-footer{position:relative;background:var(--bg-0);padding-top:26px}
.footer-cloud{display:block;width:100%;height:70px;opacity:.08}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;
  padding:26px 0 44px;
}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--text-3);line-height:1.75;max-width:320px}
.footer-social{display:flex;gap:10px;margin-top:18px}
.footer-social a{
  width:36px;height:36px;border-radius:10px;display:grid;place-items:center;
  border:1px solid var(--line-1);color:var(--text-2);background:rgba(255,255,255,.03);
}
.footer-social a:hover{border-color:var(--line-3);color:var(--primary-2);transform:translateY(-2px)}
.footer-col h4{font-size:15px;color:var(--text-1);margin-bottom:16px;font-weight:600}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:var(--text-3)}
.footer-col a:hover{color:var(--primary-2)}
.footer-contact li{font-size:14px;color:var(--text-3);line-height:1.7}
.footer-bottom{
  border-top:1px solid var(--line-1);
  padding:18px 0 26px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--primary-2)}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .nav-search{max-width:360px}
  .nav-links{gap:16px}
  .nav-links a:nth-child(n+4){display:none}
  .nav-more{display:block}
  .article-side{top:92px}
}
@media (max-width:991px){
  .section{padding:64px 0}
  .container{padding:0 20px}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:26px;padding:44px 0 64px}
  .article-side{position:static;top:auto}
  .article-main{padding:28px 26px 34px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (min-width:768px) and (max-width:991px){
  .site-header{height:auto}
  .header-inner{flex-wrap:wrap;height:auto;padding:12px 0;row-gap:12px}
  .nav-search{order:3;flex-basis:100%;max-width:none}
  .nav-links{order:2;margin-left:auto}
  .nav-cta{order:2;margin-left:0}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .header-inner{height:66px;gap:12px}
  .site-header{height:66px}
  .nav-search,.nav-links,.nav-cta{display:none}
  .menu-toggle{display:inline-flex;margin-left:auto}
  .article-hero{padding:40px 0 32px}
  .article-main{padding:22px 18px 28px;border-radius:14px}
  .article-body{font-size:16.5px;line-height:1.8}
  .article-side{display:flex}
  .section{padding:48px 0}
  .cta-inner{padding:40px 0}
  .cta-inner .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .related-grid{grid-template-columns:1fr}
}
@media (max-width:479px){
  .article-h1{font-size:26px}
  .hero-actions{gap:10px}
  .hero-actions .btn{width:100%}
  .footer-bottom{flex-direction:column;gap:6px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* roulang page: category2 */
:root{
    --bg-0:#070C11;
    --bg-1:#0C141B;
    --bg-2:#101C24;
    --field:#0E1A20;
    --primary:#1FB2C4;
    --primary-2:#2FD9C6;
    --accent:#F0A04B;
    --ok:#2FBF71;
    --warn:#E8B33A;
    --err:#E5484D;
    --text-1:#E9F2F4;
    --text-2:#A9BEC4;
    --text-3:#6F858C;
    --line-1:rgba(255,255,255,.10);
    --line-2:rgba(31,178,196,.16);
    --line-3:rgba(255,255,255,.32);
    --glass:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
    --r-card:16px;
    --r-panel:12px;
    --r-btn:12px;
    --r-badge:6px;
    --shadow-card:0 24px 60px rgba(0,0,0,.45),inset 0 1px 0 rgba(255,255,255,.06);
    --shadow-hover:0 32px 70px rgba(0,0,0,.55),inset 0 1px 0 rgba(255,255,255,.08);
    --ease:cubic-bezier(.2,.7,.3,1);
    --gap-section:88px;
    --font-sans:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei','Noto Sans SC',system-ui,-apple-system,'Segoe UI',sans-serif;
    --font-num:'Inter','DIN Alternate','Helvetica Neue',Arial,sans-serif;
  }

  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%}
  body{
    margin:0;
    background:var(--bg-0);
    color:var(--text-1);
    font-family:var(--font-sans);
    font-size:16px;
    line-height:1.8;
    letter-spacing:.02em;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  img{max-width:100%;display:block;border-radius:var(--r-panel)}
  a{color:inherit;text-decoration:none}
  a:hover{color:var(--primary-2)}
  button,input{font:inherit;color:inherit}
  button{background:none;border:0;cursor:pointer}
  h1,h2,h3,h4{margin:0;font-weight:650;line-height:1.3;letter-spacing:.02em}
  h1{font-size:clamp(30px,4.2vw,48px);line-height:1.25;font-weight:700}
  h2{font-size:clamp(24px,2.6vw,34px)}
  h3{font-size:20px;line-height:1.4;font-weight:600}
  h4{font-size:17px;line-height:1.5;font-weight:600}
  p{margin:0}
  ul,ol{margin:0;padding:0;list-style:none}
  ::selection{background:rgba(31,178,196,.35)}
  :focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}

  .container{
    width:100%;
    max-width:1200px;
    margin:0 auto;
    padding:0 24px;
  }

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    padding:14px 28px;
    border-radius:var(--r-btn);
    font-size:15px;
    font-weight:600;
    line-height:1;
    transition:transform 240ms var(--ease),box-shadow 240ms var(--ease),background-color 240ms var(--ease),border-color 240ms var(--ease),color 240ms var(--ease),opacity 240ms var(--ease);
    white-space:nowrap;
  }
  .btn-primary{
    background:linear-gradient(120deg,var(--primary),var(--primary-2));
    color:#04141A;
    box-shadow:0 12px 30px rgba(31,178,196,.22);
  }
  .btn-primary:hover{
    transform:translateY(-2px);
    box-shadow:0 0 32px rgba(31,178,196,.45);
    color:#04141A;
    filter:brightness(1.08);
  }
  .btn-primary:active{transform:translateY(1px)}
  .btn-ghost{
    background:transparent;
    border:1px solid rgba(233,242,244,.25);
    color:var(--text-1);
  }
  .btn-ghost:hover{
    border-color:var(--primary);
    background:rgba(31,178,196,.08);
    color:var(--text-1);
    transform:translateY(-2px);
  }
  .btn-sm{padding:10px 18px;font-size:14px}
  .btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}

  /* ---------- 头部导航 ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:90;
    background:rgba(7,12,17,.72);
    backdrop-filter:blur(8px);
    -webkit-backdrop-filter:blur(8px);
    border-bottom:1px solid transparent;
    transition:background-color 240ms var(--ease),border-color 240ms var(--ease),backdrop-filter 240ms var(--ease);
  }
  .site-header.is-scrolled{
    background:rgba(7,12,17,.88);
    backdrop-filter:blur(18px);
    -webkit-backdrop-filter:blur(18px);
    border-bottom:1px solid rgba(31,178,196,.32);
    box-shadow:0 12px 30px rgba(0,0,0,.35);
  }
  .header-inner{
    display:flex;
    align-items:center;
    gap:20px;
    min-height:72px;
    flex-wrap:wrap;
    padding-top:12px;
    padding-bottom:12px;
  }
  .logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
  .logo-mark{
    width:34px;height:34px;border-radius:10px;
    display:grid;place-items:center;
    font-size:16px;font-weight:700;color:#04141A;
    background:linear-gradient(140deg,var(--primary),var(--primary-2));
    box-shadow:0 0 22px rgba(47,217,198,.35);
  }
  .logo-text{font-family:var(--font-num);font-size:18px;font-weight:700;letter-spacing:.01em}
  .logo-text em{font-style:normal;font-family:var(--font-sans);color:var(--primary-2);margin-left:2px}

  .nav-search{
    position:relative;
    display:flex;
    align-items:center;
    flex:1 1 320px;
    max-width:520px;
    min-width:0;
    background:rgba(255,255,255,.05);
    border:1px solid rgba(31,178,196,.28);
    border-radius:999px;
    padding:6px 6px 6px 16px;
    transition:border-color 240ms var(--ease),box-shadow 240ms var(--ease),background-color 240ms var(--ease);
  }
  .nav-search:focus-within{
    border-color:var(--primary);
    box-shadow:0 0 0 3px rgba(31,178,196,.14),0 0 26px rgba(31,178,196,.22);
    background:rgba(255,255,255,.07);
  }
  .nav-search .search-icon{color:var(--text-3);flex-shrink:0}
  .nav-search input{
    flex:1 1 auto;
    min-width:0;
    background:transparent;
    border:0;
    outline:none;
    padding:8px 10px;
    font-size:14px;
    color:var(--text-1);
  }
  .nav-search input::placeholder{color:var(--text-3)}
  .search-submit{
    flex-shrink:0;
    width:34px;height:34px;
    border-radius:999px;
    display:grid;place-items:center;
    background:rgba(31,178,196,.14);
    color:var(--primary-2);
    transition:background-color 240ms var(--ease),color 240ms var(--ease);
  }
  .search-submit:hover{background:rgba(31,178,196,.3);color:#04141A}

  .nav-links{
    display:flex;
    align-items:center;
    gap:6px;
    margin-left:auto;
  }
  .nav-links a{
    position:relative;
    display:inline-block;
    padding:8px 10px;
    font-size:14px;
    color:var(--text-2);
    border-radius:8px;
    transition:color 240ms var(--ease),background-color 240ms var(--ease);
  }
  .nav-links a:hover{color:var(--text-1);background:rgba(255,255,255,.05)}
  .nav-links a.is-active{color:var(--text-1)}
  .nav-links a.is-active::after{
    content:"";
    position:absolute;
    left:10px;right:10px;bottom:0;
    height:2px;
    border-radius:2px;
    background:linear-gradient(90deg,var(--primary),var(--primary-2));
    box-shadow:0 0 12px rgba(47,217,198,.75);
  }
  .nav-cta{flex-shrink:0}
  .nav-toggle{
    display:none;
    width:42px;height:42px;
    border-radius:12px;
    border:1px solid var(--line-1);
    background:rgba(255,255,255,.04);
    color:var(--text-1);
    place-items:center;
    margin-left:auto;
  }
  .nav-toggle:hover{border-color:var(--primary);color:var(--primary-2)}
  .mobile-panel{
    display:none;
    border-top:1px solid var(--line-1);
    background:rgba(9,15,20,.97);
    padding:16px 0 22px;
  }
  .mobile-panel.is-open{display:block}
  .mobile-panel .nav-search{max-width:none;margin-bottom:14px}
  .mobile-links{display:flex;flex-direction:column;gap:4px}
  .mobile-links a{
    padding:12px 14px;
    border-radius:12px;
    font-size:15px;
    color:var(--text-2);
    background:rgba(255,255,255,.03);
    border:1px solid transparent;
    transition:all 240ms var(--ease);
  }
  .mobile-links a:hover,.mobile-links a.is-active{
    color:var(--text-1);
    border-color:var(--line-2);
    background:rgba(31,178,196,.08);
  }
  .mobile-panel .btn{margin-top:14px;width:100%}

  /* ---------- 面包屑 ---------- */
  .breadcrumb{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:8px;
    font-size:13px;
    color:var(--text-3);
    padding:22px 0 0;
  }
  .breadcrumb a{color:var(--text-2)}
  .breadcrumb a:hover{color:var(--primary-2)}
  .breadcrumb .sep{opacity:.5}

  /* ---------- 页面头部 Hero ---------- */
  .page-hero{
    position:relative;
    overflow:hidden;
    border-bottom:1px solid var(--line-1);
    background-color:var(--bg-1);
    background-image:
      linear-gradient(180deg,rgba(7,12,17,.55),rgba(7,12,17,.92) 62%,var(--bg-0)),
      url('/assets/images/backpic/back-2.png');
    background-size:cover;
    background-position:center;
  }
  .page-hero::after{
    content:"";
    position:absolute;
    inset:0;
    background:radial-gradient(700px 320px at 12% 8%,rgba(31,178,196,.20),transparent 70%);
    pointer-events:none;
    opacity:.85;
  }
  .page-hero .container{position:relative;z-index:2}
  .hero-inner{
    max-width:760px;
    padding:44px 0 64px;
  }
  .eyebrow{
    display:inline-flex;
    align-items:center;
    gap:8px;
    padding:6px 14px;
    border-radius:999px;
    font-size:13px;
    color:var(--primary-2);
    background:rgba(31,178,196,.10);
    border:1px solid var(--line-2);
    margin-bottom:18px;
  }
  .hero-inner h1{margin-bottom:16px}
  .hero-inner h1 .hl{
    background:linear-gradient(120deg,var(--primary),var(--primary-2));
    -webkit-background-clip:text;
    background-clip:text;
    color:transparent;
  }
  .hero-lead{
    font-size:16px;
    line-height:1.85;
    color:var(--text-2);
    max-width:660px;
  }
  .tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
  .tag{
    display:inline-flex;
    align-items:center;
    gap:6px;
    padding:6px 12px;
    font-size:13px;
    color:var(--text-2);
    border-radius:var(--r-badge);
    background:rgba(255,255,255,.05);
    border:1px solid var(--line-1);
    transition:all 240ms var(--ease);
  }
  .tag:hover{border-color:var(--line-2);color:var(--text-1);transform:translateY(-2px)}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}

  /* ---------- 通用板块 ---------- */
  .section{padding:var(--gap-section) 0}
  .section-alt{background:var(--bg-1);border-top:1px solid var(--line-1);border-bottom:1px solid var(--line-1)}
  .section-head{max-width:720px;margin-bottom:44px}
  .section-head h2{margin-bottom:14px}
  .section-head p{color:var(--text-2);font-size:16px}
  .kicker{
    display:inline-block;
    font-size:13px;
    letter-spacing:.14em;
    color:var(--primary-2);
    text-transform:uppercase;
    margin-bottom:12px;
    font-family:var(--font-num);
  }

  /* ---------- 玻璃卡 ---------- */
  .glass{
    background:var(--glass);
    border:1px solid var(--line-2);
    border-radius:var(--r-card);
    backdrop-filter:blur(16px);
    -webkit-backdrop-filter:blur(16px);
    box-shadow:var(--shadow-card);
  }
  .card{
    padding:24px;
    transition:transform 240ms var(--ease),border-color 240ms var(--ease),box-shadow 240ms var(--ease);
  }
  .card:hover{
    transform:translateY(-4px);
    border-color:var(--line-3);
    box-shadow:var(--shadow-hover);
  }

  /* ---------- 图文交替：登录前自查 ---------- */
  .split{
    display:grid;
    grid-template-columns:1fr;
    gap:32px;
    align-items:center;
  }
  .split-media{position:relative}
  .split-media img{
    width:100%;
    aspect-ratio:16/10;
    object-fit:cover;
    border-radius:var(--r-card);
    border:1px solid var(--line-1);
  }
  .split-media .media-badge{
    position:absolute;
    left:18px;
    bottom:18px;
    padding:8px 14px;
    border-radius:var(--r-badge);
    font-size:13px;
    background:rgba(7,12,17,.78);
    border:1px solid var(--line-2);
    color:var(--primary-2);
    backdrop-filter:blur(8px);
  }
  .check-list{margin-top:22px;display:flex;flex-direction:column;gap:14px}
  .check-list li{
    display:flex;
    gap:12px;
    font-size:15px;
    color:var(--text-2);
    line-height:1.75;
  }
  .check-list li::before{
    content:"";
    flex:0 0 auto;
    width:8px;height:8px;
    margin-top:9px;
    border-radius:2px;
    background:linear-gradient(140deg,var(--primary),var(--primary-2));
    box-shadow:0 0 12px rgba(47,217,198,.6);
  }
  .check-list strong{color:var(--text-1);font-weight:600}

  /* ---------- 时间线 ---------- */
  .timeline{
    position:relative;
    padding-left:30px;
    margin-top:8px;
  }
  .timeline::before{
    content:"";
    position:absolute;
    left:10px;
    top:8px;
    bottom:14px;
    width:1px;
    background:linear-gradient(180deg,rgba(31,178,196,.9),rgba(31,178,196,.28) 55%,rgba(31,178,196,.02));
  }
  .tl-item{
    position:relative;
    padding:0 0 30px;
  }
  .tl-item:last-child{padding-bottom:0}
  .tl-item::before{
    content:"";
    position:absolute;
    left:-27px;
    top:6px;
    width:14px;height:14px;
    border-radius:50%;
    background:var(--bg-1);
    border:2px solid var(--primary);
    box-shadow:0 0 0 4px rgba(31,178,196,.13),0 0 18px rgba(47,217,198,.5);
  }
  .tl-item .tl-step{
    font-family:var(--font-num);
    font-size:13px;
    letter-spacing:.1em;
    color:var(--primary-2);
    display:block;
    margin-bottom:6px;
  }
  .tl-item h3{margin-bottom:8px}
  .tl-item p{color:var(--text-2);font-size:15px;line-height:1.8}
  .tl-panel{
    margin-top:14px;
    padding:16px 18px;
    border-radius:var(--r-panel);
    background:rgba(255,255,255,.04);
    border:1px solid var(--line-1);
    font-size:14px;
    color:var(--text-2);
    line-height:1.8;
  }
  .tl-panel .k{color:var(--accent);font-weight:600}

  /* ---------- 对照双栏 ---------- */
  .compare{
    display:grid;
    grid-template-columns:1fr;
    gap:20px;
  }
  .compare-col{padding:24px}
  .compare-col h3{margin-bottom:16px;display:flex;align-items:center;gap:10px}
  .dot{
    width:9px;height:9px;border-radius:50%;
    display:inline-block;
    flex:0 0 auto;
  }
  .dot-warn{background:var(--warn);box-shadow:0 0 12px rgba(232,179,58,.6)}
  .dot-ok{background:var(--ok);box-shadow:0 0 12px rgba(47,191,113,.6)}
  .row-list{display:flex;flex-direction:column;gap:12px}
  .row-list li{
    padding:14px 16px;
    border-radius:var(--r-panel);
    background:rgba(255,255,255,.03);
    border:1px solid var(--line-1);
    font-size:14.5px;
    line-height:1.75;
    color:var(--text-2);
    transition:border-color 240ms var(--ease),background-color 240ms var(--ease);
  }
  .row-list li:hover{border-color:var(--line-2);background:rgba(31,178,196,.06)}
  .row-list li b{color:var(--text-1);font-weight:600}

  /* ---------- 场景卡（不等宽） ---------- */
  .scene-grid{
    display:grid;
    grid-template-columns:1fr;
    gap:22px;
  }
  .scene-card{
    overflow:hidden;
    padding:0;
    display:flex;
    flex-direction:column;
  }
  .scene-card img{
    width:100%;
    aspect-ratio:16/9;
    object-fit:cover;
    border-radius:0;
  }
  .scene-body{padding:22px 24px 26px}
  .scene-body .tag{margin-bottom:14px}
  .scene-body h3{margin-bottom:10px}
  .scene-body p{color:var(--text-2);font-size:15px;line-height:1.8}

  /* ---------- 数据条 ---------- */
  .stat-band{
    display:grid;
    grid-template-columns:repeat(2,1fr);
    gap:18px;
  }
  .stat{
    padding:20px;
    border-radius:var(--r-panel);
    background:rgba(255,255,255,.035);
    border:1px solid var(--line-1);
    transition:border-color 240ms var(--ease),transform 240ms var(--ease);
  }
  .stat:hover{border-color:var(--line-2);transform:translateY(-3px)}
  .stat .num{
    font-family:var(--font-num);
    font-size:30px;
    font-weight:600;
    color:var(--accent);
    line-height:1.2;
  }
  .stat .lbl{font-size:14px;color:var(--text-3);margin-top:6px}

  /* ---------- FAQ ---------- */
  .faq-list{display:flex;flex-direction:column;gap:12px}
  .faq-list details{
    border-radius:var(--r-panel);
    background:var(--glass);
    border:1px solid var(--line-1);
    backdrop-filter:blur(12px);
    -webkit-backdrop-filter:blur(12px);
    overflow:hidden;
    transition:border-color 240ms var(--ease),box-shadow 240ms var(--ease);
  }
  .faq-list details:hover{border-color:var(--line-2)}
  .faq-list details[open]{
    border-color:rgba(31,178,196,.36);
    box-shadow:0 0 0 1px rgba(31,178,196,.1),0 20px 50px rgba(0,0,0,.35);
  }
  .faq-list summary{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    padding:18px 22px;
    font-size:16px;
    font-weight:600;
    cursor:pointer;
    list-style:none;
  }
  .faq-list summary::-webkit-details-marker{display:none}
  .faq-list summary .ico{
    flex:0 0 auto;
    width:24px;height:24px;
    border-radius:6px;
    display:grid;place-items:center;
    background:rgba(31,178,196,.12);
    color:var(--primary-2);
    font-size:16px;
    line-height:1;
    transition:transform 240ms var(--ease),background-color 240ms var(--ease);
  }
  .faq-list details[open] summary .ico{transform:rotate(180deg);background:rgba(47,217,198,.22)}
  .faq-body{
    padding:0 22px 20px;
    font-size:15px;
    line-height:1.85;
    color:var(--text-2);
  }
  .faq-body p+p{margin-top:10px}

  /* ---------- 相关分类 ---------- */
  .rel-grid{
    display:grid;
    grid-template-columns:1fr;
    gap:18px;
  }
  .rel-card{
    padding:22px;
    display:flex;
    flex-direction:column;
    gap:10px;
  }
  .rel-card .idx{
    font-family:var(--font-num);
    font-size:13px;
    color:var(--text-3);
    letter-spacing:.12em;
  }
  .rel-card h3{font-size:18px}
  .rel-card p{color:var(--text-2);font-size:14px;line-height:1.75}
  .rel-card .go{
    margin-top:6px;
    font-size:14px;
    color:var(--primary-2);
    display:inline-flex;
    align-items:center;
    gap:6px;
  }
  .rel-card:hover .go{color:var(--accent)}

  /* ---------- 底部 CTA ---------- */
  .cta-band{
    position:relative;
    overflow:hidden;
    border-radius:var(--r-card);
    border:1px solid var(--line-2);
    background:
      radial-gradient(600px 240px at 18% 10%,rgba(31,178,196,.22),transparent 70%),
      linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
    padding:40px 28px;
  }
  .cta-band svg.cta-lines{
    position:absolute;
    inset:auto -40px -30px auto;
    width:520px;
    height:200px;
    opacity:.07;
    pointer-events:none;
  }
  .cta-inner{
    position:relative;
    z-index:2;
    display:flex;
    flex-wrap:wrap;
    gap:20px;
    align-items:center;
    justify-content:space-between;
  }
  .cta-inner h2{font-size:clamp(22px,2.4vw,30px)}
  .cta-inner p{color:var(--text-2);font-size:15px;margin-top:10px;max-width:620px}

  /* ---------- 页脚 ---------- */
  .site-footer{
    position:relative;
    background:var(--bg-1);
    border-top:1px solid var(--line-1);
    padding:56px 0 26px;
    margin-top:0;
  }
  .footer-cloud{
    position:absolute;
    top:0;left:0;
    width:100%;
    height:70px;
    opacity:.08;
    pointer-events:none;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1fr;
    gap:32px;
  }
  .footer-brand p{color:var(--text-2);font-size:14.5px;margin-top:14px;max-width:320px;line-height:1.8}
  .footer-social{display:flex;gap:10px;margin-top:18px}
  .footer-social a{
    width:38px;height:38px;
    border-radius:10px;
    display:grid;place-items:center;
    border:1px solid var(--line-1);
    background:rgba(255,255,255,.03);
    color:var(--text-2);
    transition:all 240ms var(--ease);
  }
  .footer-social a:hover{border-color:var(--primary);color:var(--primary-2);transform:translateY(-2px)}
  .footer-col h4{font-size:16px;margin-bottom:16px}
  .footer-col ul{display:flex;flex-direction:column;gap:11px}
  .footer-col a{font-size:14.5px;color:var(--text-2)}
  .footer-col a:hover{color:var(--primary-2)}
  .footer-col li{font-size:14.5px;color:var(--text-2)}
  .footer-bottom{
    margin-top:40px;
    padding-top:20px;
    border-top:1px solid var(--line-1);
    display:flex;
    flex-wrap:wrap;
    gap:12px;
    justify-content:space-between;
    font-size:13px;
    color:var(--text-3);
  }
  .footer-bottom a{color:var(--text-3)}
  .footer-bottom a:hover{color:var(--primary-2)}

  /* ---------- 响应式 ---------- */
  @media (min-width:768px){
    .stat-band{grid-template-columns:repeat(4,1fr)}
    .compare{grid-template-columns:1fr 1fr}
    .rel-grid{grid-template-columns:repeat(2,1fr)}
    .cta-band{padding:52px 44px}
  }
  @media (min-width:992px){
    .split{grid-template-columns:1.05fr .95fr;gap:56px}
    .split.is-reverse .split-media{order:2}
    .scene-grid{grid-template-columns:1.35fr 1fr 1fr;align-items:start}
    .rel-grid{grid-template-columns:repeat(4,1fr)}
    .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
  }
  @media (min-width:1200px){
    :root{--gap-section:88px}
  }

  @media (max-width:1199px){
    .nav-search{max-width:360px}
    .nav-links a{padding:8px 8px;font-size:13.5px}
  }
  @media (max-width:991px){
    :root{--gap-section:64px}
    .nav-links,.nav-cta{display:none}
    .nav-toggle{display:grid}
    .nav-search{
      order:3;
      flex:1 1 100%;
      max-width:none;
      margin-top:4px;
    }
    .header-inner{padding-top:10px;padding-bottom:12px}
    .section-head{margin-bottom:32px}
  }
  @media (max-width:767px){
    :root{--gap-section:48px}
    .container{padding:0 16px}
    .nav-search{display:none}
    .logo-text{font-size:17px}
    .hero-inner{padding:32px 0 46px}
    .card{padding:20px}
    .compare-col{padding:20px}
    .scene-body{padding:20px}
    .footer-bottom{flex-direction:column;align-items:flex-start}
  }
  @media (max-width:520px){
    body{font-size:15.5px}
    .hero-actions .btn{width:100%}
    .btn{padding:13px 20px}
    .stat .num{font-size:26px}
    .faq-list summary{padding:16px 16px;font-size:15px}
    .faq-body{padding:0 16px 18px}
  }

  @media (prefers-reduced-motion:reduce){
    *,*::before,*::after{
      transition-duration:.001ms !important;
      animation-duration:.001ms !important;
      animation-iteration-count:1 !important;
    }
  }

/* roulang page: category3 */
:root{
  --bg-0:#070C11;
  --bg-1:#0C141B;
  --bg-2:#101C24;
  --primary:#1FB2C4;
  --primary-2:#2FD9C6;
  --accent:#F0A04B;
  --text-1:#E9F2F4;
  --text-2:#A9BEC4;
  --text-3:#6F858C;
  --line-1:rgba(255,255,255,.10);
  --line-2:rgba(31,178,196,.16);
  --line-3:rgba(233,242,244,.25);
  --glass:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  --glass-deep:linear-gradient(160deg,rgba(255,255,255,.10),rgba(255,255,255,.03));
  --radius-card:16px;
  --radius-panel:12px;
  --radius-btn:12px;
  --radius-badge:6px;
  --radius-pill:999px;
  --shadow-card:0 24px 60px rgba(0,0,0,.45), inset 0 1px 0 rgba(255,255,255,.06);
  --shadow-pop:0 30px 70px rgba(0,0,0,.55), inset 0 1px 0 rgba(255,255,255,.08);
  --space-section:clamp(48px,6vw,88px);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-cn:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif;
  --font-num:'Inter','DIN Alternate',system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  letter-spacing:.02em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;background-color:transparent;}
button,input,select,textarea{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
table{border-collapse:collapse;width:100%;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(31,178,196,.35);color:#fff;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 16px;}
@media (min-width:768px){.container{padding:0 20px;}}
@media (min-width:1200px){.container{padding:0 24px;}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1.2;
  transition:transform 240ms var(--ease),box-shadow 240ms var(--ease),background 240ms var(--ease),border-color 240ms var(--ease),color 240ms var(--ease),opacity 240ms var(--ease);
  will-change:transform;
}
.btn i{font-size:14px;}
.btn-primary{
  background:linear-gradient(120deg,#1FB2C4,#2FD9C6);
  color:#04141A;
  box-shadow:0 12px 30px rgba(31,178,196,.28);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 0 32px rgba(31,178,196,.45),0 16px 32px rgba(0,0,0,.4);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:transparent;border:1px solid var(--line-3);color:var(--text-1);
}
.btn-ghost:hover{border-color:var(--primary);background:rgba(31,178,196,.08);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;}

/* ---------- 标签 / 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:var(--radius-badge);
  font-size:13px;line-height:1.5;
  background:rgba(31,178,196,.12);
  border:1px solid var(--line-2);
  color:var(--primary-2);
}
.badge-accent{background:rgba(240,160,75,.14);border-color:rgba(240,160,75,.34);color:var(--accent);}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  padding:6px 14px;border-radius:var(--radius-pill);
  font-size:13px;color:var(--text-2);
  background:rgba(255,255,255,.04);
  border:1px solid var(--line-1);
  transition:border-color 240ms var(--ease),color 240ms var(--ease);
}
.tag:hover{border-color:var(--line-2);color:var(--text-1);}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,12,17,.72);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(31,178,196,.10);
  transition:background 240ms var(--ease),border-color 240ms var(--ease),box-shadow 240ms var(--ease);
}
.site-header.is-scrolled{
  background:rgba(7,12,17,.93);
  border-bottom-color:rgba(31,178,196,.32);
  box-shadow:0 12px 34px rgba(0,0,0,.45);
}
.nav-inner{display:flex;align-items:center;gap:14px;flex-wrap:wrap;padding:12px 0;}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:34px;height:34px;border-radius:10px;
  display:grid;place-items:center;
  background:linear-gradient(140deg,rgba(31,178,196,.9),rgba(47,217,198,.7));
  color:#04141A;font-weight:700;font-size:16px;
  box-shadow:0 0 22px rgba(31,178,196,.35);
}
.logo-text{font-size:18px;font-weight:700;letter-spacing:.01em;font-family:var(--font-num);}
.logo-text em{font-style:normal;font-family:var(--font-cn);color:var(--primary-2);}

.nav-search{
  display:flex;align-items:center;gap:10px;
  order:4;flex:1 1 100%;
  padding:9px 10px 9px 16px;
  border-radius:var(--radius-pill);
  background:rgba(255,255,255,.05);
  border:1px solid var(--line-2);
  transition:border-color 240ms var(--ease),box-shadow 240ms var(--ease),background 240ms var(--ease);
}
.nav-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 4px rgba(31,178,196,.14);background:rgba(255,255,255,.07);}
.nav-search i{color:var(--text-3);font-size:15px;}
.nav-search input{
  flex:1;min-width:0;background:transparent;border:0;outline:none;
  font-size:14px;color:var(--text-1);
}
.nav-search input::placeholder{color:var(--text-3);}
.nav-search .kbd{
  display:none;padding:2px 8px;border-radius:6px;
  font-size:12px;color:var(--text-3);
  border:1px solid var(--line-1);background:rgba(255,255,255,.04);
}
.nav-search .search-btn{
  width:32px;height:32px;border-radius:50%;
  display:grid;place-items:center;flex-shrink:0;
  background:linear-gradient(120deg,#1FB2C4,#2FD9C6);color:#04141A;
  transition:filter 240ms var(--ease),transform 240ms var(--ease);
}
.nav-search .search-btn:hover{filter:brightness(1.1);transform:scale(1.05);}

.nav-links{display:none;align-items:center;gap:4px;}
.nav-links a{
  position:relative;padding:10px 12px;font-size:14px;color:var(--text-2);
  border-radius:10px;white-space:nowrap;
  transition:color 240ms var(--ease),background 240ms var(--ease);
}
.nav-links a:hover{color:var(--text-1);background:rgba(255,255,255,.05);}
.nav-links a.is-active{color:var(--text-1);font-weight:600;}
.nav-links a.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  border-radius:2px;background:linear-gradient(90deg,#1FB2C4,#2FD9C6);
  box-shadow:0 0 12px rgba(47,217,198,.7);
}
.nav-cta{margin-left:auto;}
.nav-toggle{
  width:40px;height:40px;border-radius:10px;display:grid;place-items:center;
  border:1px solid var(--line-1);color:var(--text-1);margin-left:auto;
}
.nav-toggle:hover{border-color:var(--primary);}

.mobile-drawer{
  display:none;padding:0 0 18px;
}
.mobile-drawer.is-open{display:block;animation:drawerIn 260ms var(--ease);}
@keyframes drawerIn{from{opacity:0;transform:translateY(-8px);}to{opacity:1;transform:none;}}
.mobile-drawer .nav-search{order:0;flex:1 1 auto;margin-bottom:14px;}
.drawer-links{display:flex;flex-direction:column;gap:6px;}
.drawer-links a{
  padding:12px 14px;border-radius:var(--radius-panel);
  border:1px solid var(--line-1);background:var(--glass);
  font-size:15px;color:var(--text-2);
}
.drawer-links a.is-active{color:var(--text-1);border-color:var(--line-2);background:rgba(31,178,196,.10);}
.drawer-links a:hover{color:var(--text-1);border-color:var(--line-2);}

@media (min-width:768px){
  .nav-search{order:3;flex:1 1 100%;}
  .nav-toggle{display:none;}
  .mobile-drawer{display:none !important;}
}
@media (min-width:992px){
  .nav-inner{padding:0;height:70px;flex-wrap:nowrap;}
  .nav-search{order:0;flex:0 1 360px;margin:0 6px;}
  .nav-search .kbd{display:inline-block;}
  .nav-links{display:flex;overflow-x:auto;scrollbar-width:none;}
  .nav-links::-webkit-scrollbar{display:none;}
  .nav-cta{margin-left:8px;}
}
@media (min-width:1200px){
  .nav-search{flex:0 1 520px;}
  .nav-links a{padding:10px 14px;}
}

/* ---------- 页头 / 面包屑 ---------- */
.page-hero{position:relative;overflow:hidden;background:var(--bg-1);}
.page-hero .hero-media{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  opacity:.32;
}
.page-hero .hero-mask{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,12,17,.55) 0%,rgba(7,12,17,.86) 55%,rgba(7,12,17,1) 100%);
}
.page-hero .hero-cloud{
  position:absolute;left:0;right:0;bottom:-6px;width:100%;height:90px;opacity:.08;
}
.page-hero .hero-inner{position:relative;padding:34px 0 56px;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--text-3);margin-bottom:22px;
}
.breadcrumb a{color:var(--text-2);transition:color 240ms var(--ease);}
.breadcrumb a:hover{color:var(--primary-2);}
.breadcrumb .sep{color:var(--text-3);}
.page-hero h1{
  font-size:clamp(30px,4.2vw,48px);line-height:1.25;font-weight:700;
  letter-spacing:.01em;margin-bottom:16px;
}
.page-hero h1 span{
  background:linear-gradient(120deg,#1FB2C4,#2FD9C6);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.page-hero .lead{
  max-width:720px;font-size:16px;color:var(--text-2);line-height:1.85;
}
.page-hero .tag-row{margin-top:24px;}

/* ---------- 板块基础 ---------- */
.section{padding:var(--space-section) 0;}
.section-alt{background:var(--bg-1);}
.section-head{max-width:760px;margin-bottom:38px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.08em;color:var(--primary-2);
  text-transform:uppercase;margin-bottom:12px;
}
.eyebrow::before{content:"";width:20px;height:1px;background:var(--primary);}
.section-head h2{
  font-size:clamp(24px,2.6vw,34px);line-height:1.3;font-weight:650;margin-bottom:12px;
}
.section-head p{color:var(--text-2);font-size:15px;line-height:1.85;}

/* ---------- 双栏对照 ---------- */
.compare-grid{display:grid;grid-template-columns:1fr;gap:20px;}
.compare-panel{
  padding:26px 22px;border-radius:var(--radius-card);
  background:var(--glass);border:1px solid var(--line-2);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  box-shadow:var(--shadow-card);
  transition:transform 240ms var(--ease),box-shadow 240ms var(--ease),border-color 240ms var(--ease);
}
.compare-panel:hover{transform:translateY(-4px);box-shadow:var(--shadow-pop);border-color:rgba(31,178,196,.32);}
.compare-head{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.compare-icon{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:rgba(31,178,196,.14);color:var(--primary-2);font-size:19px;
  border:1px solid var(--line-2);
}
.compare-head h3{font-size:20px;font-weight:600;}
.compare-head span{display:block;font-size:13px;color:var(--text-3);font-weight:400;}
.compare-list li{
  display:flex;gap:10px;align-items:flex-start;
  padding:11px 0;border-top:1px solid var(--line-1);
  font-size:15px;color:var(--text-2);line-height:1.75;
}
.compare-list li:first-child{border-top:0;padding-top:0;}
.compare-list li i{color:var(--primary-2);font-size:13px;margin-top:7px;flex-shrink:0;}
.compare-list li strong{color:var(--text-1);font-weight:600;}
@media (min-width:768px){.compare-grid{grid-template-columns:1fr 1fr;gap:24px;}}
@media (min-width:992px){.compare-panel{padding:30px 28px;}}

/* ---------- 规格参数表 ---------- */
.table-wrap{
  border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line-2);background:rgba(16,28,36,.6);
  box-shadow:var(--shadow-card);
}
.table-scroll{overflow-x:auto;}
.spec-table{min-width:680px;}
.spec-table th,.spec-table td{
  padding:16px 18px;text-align:left;font-size:14.5px;
  border-bottom:1px solid rgba(255,255,255,.06);
  vertical-align:top;
}
.spec-table thead th{
  background:var(--glass-deep);
  color:var(--text-1);font-weight:600;font-size:14px;
  border-bottom:1px solid var(--line-2);
  white-space:nowrap;
}
.spec-table tbody tr:nth-child(even){background:rgba(255,255,255,.015);}
.spec-table tbody tr:hover{background:rgba(31,178,196,.07);}
.spec-table tbody td:first-child{
  color:var(--text-1);font-weight:600;white-space:nowrap;
  position:sticky;left:0;background:#0C141B;z-index:1;
}
.spec-table tbody tr:nth-child(even) td:first-child{background:#0E1820;}
.spec-table td{color:var(--text-2);}
.spec-table td .badge{margin-right:6px;}

/* ---------- 图标网格 ---------- */
.icon-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;}
@media (min-width:768px){.icon-grid{grid-template-columns:repeat(4,1fr);gap:20px;}}
.icon-cell{
  padding:22px 18px;border-radius:var(--radius-panel);
  background:var(--glass);border:1px solid var(--line-1);
  transition:transform 240ms var(--ease),border-color 240ms var(--ease),box-shadow 240ms var(--ease),background 240ms var(--ease);
}
.icon-cell:hover{transform:translateY(-4px);border-color:rgba(31,178,196,.32);box-shadow:0 20px 44px rgba(0,0,0,.45);background:var(--glass-deep);}
.icon-cell i{font-size:20px;color:var(--primary-2);margin-bottom:14px;display:block;}
.icon-cell h3{font-size:16px;font-weight:600;margin-bottom:8px;}
.icon-cell p{font-size:13.5px;color:var(--text-3);line-height:1.75;}

/* ---------- 步骤 / 编号列表 ---------- */
.steps{display:grid;grid-template-columns:1fr;gap:16px;counter-reset:step;}
@media (min-width:992px){.steps{grid-template-columns:repeat(4,1fr);gap:20px;}}
.step-item{
  position:relative;padding:24px 20px;
  border-radius:var(--radius-card);
  background:var(--glass);border:1px solid var(--line-1);
  transition:transform 240ms var(--ease),border-color 240ms var(--ease),box-shadow 240ms var(--ease);
}
.step-item:hover{transform:translateY(-4px);border-color:rgba(31,178,196,.32);box-shadow:0 20px 44px rgba(0,0,0,.45);}
.step-num{
  counter-increment:step;
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
  font-family:var(--font-num);font-weight:600;font-size:16px;color:#04141A;
  background:linear-gradient(120deg,#1FB2C4,#2FD9C6);
  box-shadow:0 0 24px rgba(31,178,196,.32);
  margin-bottom:16px;
}
.step-num::before{content:counter(step,decimal-leading-zero);}
.step-item h3{font-size:17px;font-weight:600;margin-bottom:8px;}
.step-item p{font-size:14px;color:var(--text-2);line-height:1.8;}

/* ---------- 图文区块 ---------- */
.feature-split{
  display:grid;grid-template-columns:1fr;gap:28px;align-items:center;
}
@media (min-width:992px){
  .feature-split{grid-template-columns:1.05fr .95fr;gap:56px;}
  .feature-split.is-reverse .feature-media{order:-1;}
}
.feature-media{
  border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line-2);box-shadow:var(--shadow-card);
  position:relative;aspect-ratio:16/10;background:var(--bg-2);
}
.feature-media img{width:100%;height:100%;object-fit:cover;}
.feature-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,12,17,0) 40%,rgba(7,12,17,.55) 100%);
}
.feature-body h3{font-size:22px;font-weight:600;margin-bottom:14px;}
.feature-body p{color:var(--text-2);font-size:15px;line-height:1.85;margin-bottom:18px;}
.check-list li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14.5px;color:var(--text-2);padding:7px 0;line-height:1.75;
}
.check-list li::before{
  content:"";width:6px;height:6px;border-radius:2px;margin-top:9px;flex-shrink:0;
  background:linear-gradient(120deg,#1FB2C4,#2FD9C6);
  box-shadow:0 0 10px rgba(31,178,196,.6);
}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:960px;}
.faq-item{
  border-radius:var(--radius-panel);
  background:var(--glass);border:1px solid var(--line-1);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  overflow:hidden;
  transition:border-color 240ms var(--ease),box-shadow 240ms var(--ease);
}
.faq-item:hover{border-color:var(--line-2);}
.faq-item.is-open{border-color:rgba(31,178,196,.34);box-shadow:0 18px 40px rgba(0,0,0,.4);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;text-align:left;
  font-size:16px;font-weight:600;color:var(--text-1);line-height:1.6;
}
.faq-q .faq-icon{
  width:26px;height:26px;border-radius:8px;flex-shrink:0;
  display:grid;place-items:center;
  border:1px solid var(--line-2);color:var(--primary-2);font-size:12px;
  transition:transform 240ms var(--ease),background 240ms var(--ease);
}
.faq-item.is-open .faq-icon{transform:rotate(180deg);background:rgba(31,178,196,.16);}
.faq-a{max-height:0;overflow:hidden;transition:max-height 320ms var(--ease);}
.faq-a p{
  padding:0 20px 20px;font-size:15px;color:var(--text-2);line-height:1.85;
}
.faq-a p strong{color:var(--text-1);}

/* ---------- 相关分类 ---------- */
.related-grid{display:grid;grid-template-columns:1fr;gap:18px;}
@media (min-width:600px){.related-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:992px){.related-grid{grid-template-columns:repeat(4,1fr);gap:22px;}}
.related-card{
  display:block;border-radius:var(--radius-card);overflow:hidden;
  background:var(--glass);border:1px solid var(--line-1);
  transition:transform 240ms var(--ease),border-color 240ms var(--ease),box-shadow 240ms var(--ease);
}
.related-card:hover{transform:translateY(-4px);border-color:rgba(31,178,196,.32);box-shadow:var(--shadow-pop);}
.related-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--bg-2);}
.related-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 400ms var(--ease);}
.related-card:hover .related-thumb img{transform:scale(1.05);}
.related-body{padding:18px 18px 20px;}
.related-body h3{font-size:16px;font-weight:600;margin:10px 0 8px;}
.related-body p{font-size:13.5px;color:var(--text-3);line-height:1.75;}
.related-body .more{
  display:inline-flex;align-items:center;gap:6px;margin-top:14px;
  font-size:13px;color:var(--primary-2);
}
.related-card:hover .related-body .more{color:var(--accent);}

/* ---------- 底部 CTA ---------- */
.cta-band{position:relative;padding:0 0 var(--space-section);}
.cta-inner{
  position:relative;overflow:hidden;
  border-radius:var(--radius-card);
  padding:44px 24px;
  background:linear-gradient(140deg,rgba(31,178,196,.16),rgba(16,28,36,.9));
  border:1px solid var(--line-2);
  box-shadow:var(--shadow-card);
  text-align:center;
}
.cta-inner::before{
  content:"";position:absolute;left:50%;top:-120px;width:520px;height:280px;
  transform:translateX(-50%);
  background:radial-gradient(closest-side,rgba(47,217,198,.28),transparent);
  pointer-events:none;
}
.cta-inner h2{position:relative;font-size:clamp(22px,2.4vw,30px);font-weight:650;margin-bottom:12px;}
.cta-inner p{position:relative;color:var(--text-2);font-size:15px;max-width:620px;margin:0 auto 26px;}
.cta-actions{position:relative;display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}
@media (min-width:768px){.cta-inner{padding:56px 48px;}}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;background:var(--bg-1);
  border-top:1px solid var(--line-1);
  padding-top:26px;
}
.footer-cloud{display:block;width:100%;height:70px;opacity:.08;}
.footer-grid{
  display:grid;grid-template-columns:1fr;gap:32px;
  padding:30px 0 40px;
}
@media (min-width:600px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:992px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;}}
.footer-brand .logo{margin-bottom:14px;}
.footer-brand p{font-size:14px;color:var(--text-3);line-height:1.8;max-width:320px;}
.footer-social{display:flex;gap:10px;margin-top:18px;}
.footer-social a{
  width:36px;height:36px;border-radius:10px;display:grid;place-items:center;
  border:1px solid var(--line-1);color:var(--text-2);
  transition:border-color 240ms var(--ease),color 240ms var(--ease),transform 240ms var(--ease);
}
.footer-social a:hover{border-color:var(--primary);color:var(--primary-2);transform:translateY(-2px);}
.footer-col h4{font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{font-size:14px;color:var(--text-3);transition:color 240ms var(--ease);}
.footer-col ul a:hover{color:var(--primary-2);}
.footer-contact li{font-size:14px;color:var(--text-3);line-height:1.8;display:flex;gap:10px;align-items:flex-start;margin-bottom:12px;}
.footer-contact li i{color:var(--primary);margin-top:5px;font-size:13px;}
.footer-bottom{
  border-top:1px solid var(--line-1);padding:18px 0 24px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--primary-2);}

@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category4 */
:root{
  --bg-0:#070C11; --bg-1:#0C141B; --bg-2:#101C24;
  --primary:#1FB2C4; --primary-2:#2FD9C6; --accent:#F0A04B;
  --text-1:#E9F2F4; --text-2:#A9BEC4; --text-3:#6F858C;
  --ok:#2FBF71; --warn:#E8B33A; --err:#E5484D;
  --line-1:rgba(255,255,255,.10);
  --line-2:rgba(31,178,196,.16);
  --line-3:rgba(31,178,196,.32);
  --glass:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  --r-card:16px; --r-panel:12px; --r-btn:12px; --r-badge:6px; --r-pill:999px;
  --sh-card:0 24px 60px rgba(0,0,0,.45), inset 0 1px 0 rgba(255,255,255,.06);
  --sh-hover:0 30px 70px rgba(0,0,0,.55), inset 0 1px 0 rgba(255,255,255,.08);
  --sp-section:88px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-cn:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei','Noto Sans SC',system-ui,-apple-system,sans-serif;
  --font-num:'Inter','DIN Alternate','PingFang SC',system-ui,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;padding-top:72px;
  background:
    radial-gradient(1100px 520px at 12% -6%,rgba(31,178,196,.16),transparent 62%),
    radial-gradient(900px 480px at 92% 4%,rgba(47,217,198,.10),transparent 60%),
    var(--bg-0);
  color:var(--text-1);
  font-family:var(--font-cn);
  font-size:16px;line-height:1.8;letter-spacing:.02em;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;border:0}
a{color:inherit;text-decoration:none;background:transparent}
button,input{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;height:72px;
  background:rgba(7,12,17,.72);
  border-bottom:1px solid transparent;
  transition:background 240ms var(--ease),border-color 240ms var(--ease),backdrop-filter 240ms var(--ease);
}
.site-header.is-scrolled{
  background:rgba(7,12,17,.86);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(47,217,198,.28);
  box-shadow:0 10px 40px rgba(0,0,0,.45);
}
.header-inner{display:flex;align-items:center;gap:18px;height:72px}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--primary),var(--primary-2));
  color:#04141A;font-weight:700;font-size:16px;
  box-shadow:0 0 22px rgba(31,178,196,.4);
}
.logo-text{font-size:17px;font-weight:650;letter-spacing:.02em;white-space:nowrap}
.logo-text em{font-style:normal;color:var(--primary-2)}
.nav-search{
  position:relative;display:flex;align-items:center;
  flex:1 1 auto;max-width:560px;height:44px;margin:0 auto;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line-2);border-radius:var(--r-pill);
  padding:0 6px 0 16px;
  transition:border-color 240ms var(--ease),box-shadow 240ms var(--ease);
}
.nav-search:focus-within{border-color:var(--line-3);box-shadow:0 0 0 4px rgba(31,178,196,.14)}
.nav-search .search-icon{flex:0 0 auto;color:var(--text-3);margin-right:10px}
.nav-search input{
  flex:1 1 auto;min-width:0;height:100%;background:none;border:0;outline:none;
  font-size:14px;color:var(--text-1);
}
.nav-search input::placeholder{color:var(--text-3)}
.nav-search .search-btn{
  flex:0 0 auto;width:34px;height:34px;border-radius:50%;display:grid;place-items:center;
  background:linear-gradient(120deg,var(--primary),var(--primary-2));color:#04141A;
  transition:transform 240ms var(--ease),box-shadow 240ms var(--ease);
}
.nav-search .search-btn:hover{transform:translateY(-1px);box-shadow:0 0 22px rgba(31,178,196,.45)}
.nav-links{display:flex;align-items:center;gap:6px;flex:0 0 auto}
.nav-links a{
  position:relative;padding:9px 12px;font-size:14px;color:var(--text-2);
  border-radius:8px;white-space:nowrap;
  transition:color 240ms var(--ease),background 240ms var(--ease);
}
.nav-links a:hover{color:var(--text-1);background:rgba(255,255,255,.05)}
.nav-links a.is-active{color:var(--text-1);font-weight:600}
.nav-links a.is-active::after{
  content:"";position:absolute;left:10px;right:10px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--primary-2));
  box-shadow:0 0 12px rgba(47,217,198,.75);
}
.nav-cta{flex:0 0 auto}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  transition:transform 240ms var(--ease),box-shadow 240ms var(--ease),background 240ms var(--ease),border-color 240ms var(--ease),filter 240ms var(--ease);
}
.btn-primary{
  background:linear-gradient(120deg,var(--primary),var(--primary-2));
  color:#04141A;
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 0 32px rgba(31,178,196,.45)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{
  background:transparent;border:1px solid rgba(233,242,244,.25);color:var(--text-1);
}
.btn-ghost:hover{border-color:var(--primary);background:rgba(31,178,196,.08);transform:translateY(-2px)}
.btn-sm{padding:10px 18px;font-size:14px}
.nav-cta{padding:10px 20px;font-size:14px}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line-1);
  align-items:center;justify-content:center;color:var(--text-1);
}
.mobile-panel{
  display:none;position:fixed;top:72px;left:0;right:0;bottom:0;z-index:55;
  background:rgba(7,12,17,.97);backdrop-filter:blur(14px);
  padding:22px 0 40px;overflow-y:auto;
}
.mobile-panel.is-open{display:block}
.mobile-panel .m-search{
  display:flex;align-items:center;height:46px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.05);border:1px solid var(--line-2);padding:0 18px;gap:10px;
}
.mobile-panel .m-search input{flex:1;background:none;border:0;outline:none;font-size:14px}
.mobile-panel nav{margin-top:20px;display:grid;gap:8px}
.mobile-panel nav a{
  padding:14px 16px;border-radius:var(--r-panel);border:1px solid var(--line-1);
  background:var(--glass);font-size:15px;color:var(--text-2);
}
.mobile-panel nav a.is-active{color:var(--text-1);border-color:var(--line-3)}

/* ---------- 页头 ---------- */
.page-hero{position:relative;overflow:hidden;padding:76px 0 62px;border-bottom:1px solid var(--line-1)}
.page-hero .hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  opacity:.32;
}
.page-hero .hero-overlay{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,12,17,.72) 0%,rgba(7,12,17,.88) 52%,var(--bg-0) 100%);
}
.page-hero .hero-cloud{position:absolute;inset:auto 0 0 0;width:100%;height:120px;opacity:.08}
.page-hero .container{position:relative;z-index:2}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:22px}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--primary-2)}
.breadcrumb span.sep{color:var(--text-3)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);font-size:13px;
  border:1px solid var(--line-2);background:rgba(31,178,196,.08);color:var(--primary-2);
}
.page-title{
  margin-top:18px;font-size:clamp(30px,4.2vw,48px);line-height:1.25;font-weight:700;letter-spacing:.01em;
}
.hero-lead{
  margin-top:16px;max-width:720px;font-size:17px;line-height:1.8;color:var(--text-2);
}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.tag{
  display:inline-flex;align-items:center;padding:6px 12px;border-radius:var(--r-badge);
  font-size:13px;color:var(--text-2);background:rgba(255,255,255,.04);border:1px solid var(--line-1);
}
.tag:hover{border-color:var(--line-3);color:var(--text-1)}

/* ---------- 锚点跳转条 ---------- */
.anchor-bar{
  position:sticky;top:72px;z-index:40;
  background:rgba(12,20,27,.9);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line-1);
}
.anchor-inner{display:flex;gap:10px;overflow-x:auto;padding:14px 0;scrollbar-width:none}
.anchor-inner::-webkit-scrollbar{display:none}
.anchor-chip{
  flex:0 0 auto;padding:9px 16px;border-radius:var(--r-pill);font-size:14px;color:var(--text-2);
  border:1px solid var(--line-1);background:rgba(255,255,255,.03);white-space:nowrap;
  transition:all 240ms var(--ease);
}
.anchor-chip:hover{color:var(--text-1);border-color:var(--line-3);background:rgba(31,178,196,.10);transform:translateY(-1px)}

/* ---------- 板块通用 ---------- */
.section{padding:var(--sp-section) 0}
.section.alt{background:linear-gradient(180deg,rgba(16,28,36,.6),rgba(12,20,27,.2))}
.section-head{max-width:720px;margin-bottom:40px}
.section-head h2{font-size:clamp(24px,2.6vw,34px);line-height:1.3;font-weight:650}
.section-head p{margin-top:14px;font-size:16px;color:var(--text-2)}
.section-head .kicker{display:block;font-size:13px;letter-spacing:.16em;color:var(--primary-2);text-transform:uppercase;margin-bottom:12px}

/* ---------- 数据条 ---------- */
.stats-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat-card{
  padding:26px 22px;border-radius:var(--r-card);border:1px solid var(--line-1);
  background:var(--glass);box-shadow:var(--sh-card);
  transition:transform 240ms var(--ease),box-shadow 240ms var(--ease),border-color 240ms var(--ease);
}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:var(--line-3)}
.stat-num{font-family:var(--font-num);font-size:34px;font-weight:600;line-height:1.1;color:var(--primary-2)}
.stat-num em{font-style:normal;font-size:16px;color:var(--text-2);margin-left:4px}
.stat-label{margin-top:10px;font-size:14px;color:var(--text-2)}

/* ---------- 快速定位 ---------- */
.locate-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:36px;align-items:center}
.locate-list{display:grid;gap:14px;margin-top:26px}
.locate-item{
  display:flex;gap:14px;padding:18px 20px;border-radius:var(--r-panel);
  border:1px solid var(--line-1);background:rgba(255,255,255,.03);
  transition:border-color 240ms var(--ease),transform 240ms var(--ease);
}
.locate-item:hover{border-color:var(--line-3);transform:translateY(-3px)}
.locate-item .dot{
  flex:0 0 auto;width:10px;height:10px;border-radius:3px;margin-top:9px;
  background:linear-gradient(120deg,var(--primary),var(--primary-2));
  box-shadow:0 0 12px rgba(31,178,196,.7);
}
.locate-item strong{display:block;font-size:16px;font-weight:600}
.locate-item span{display:block;margin-top:6px;font-size:14px;color:var(--text-2)}
.media-frame{
  border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line-1);
  box-shadow:var(--sh-card);aspect-ratio:16/10;
}
.media-frame img{width:100%;height:100%;object-fit:cover}

/* ---------- FAQ ---------- */
.faq-group{margin-top:52px}
.faq-group:first-of-type{margin-top:0}
.group-head{display:flex;align-items:center;gap:14px;margin-bottom:20px}
.group-head .g-index{
  font-family:var(--font-num);font-size:14px;font-weight:600;color:#04141A;
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--primary),var(--primary-2));
}
.group-head h3{font-size:20px;font-weight:600}
.group-head .g-note{margin-left:auto;font-size:13px;color:var(--text-3)}
.faq-list{display:grid;gap:12px}
.faq-item{
  border-radius:var(--r-panel);border:1px solid var(--line-1);
  background:var(--glass);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  overflow:hidden;transition:border-color 240ms var(--ease),box-shadow 240ms var(--ease);
}
.faq-item:hover{border-color:var(--line-3)}
.faq-item[open]{border-color:var(--line-3);box-shadow:0 16px 40px rgba(0,0,0,.4)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:16px;
  padding:18px 22px;font-size:16px;font-weight:600;color:var(--text-1);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .q-mark{
  flex:0 0 auto;width:24px;height:24px;border-radius:6px;display:grid;place-items:center;
  font-family:var(--font-num);font-size:12px;font-weight:600;color:var(--primary-2);
  border:1px solid var(--line-2);background:rgba(31,178,196,.08);
}
.faq-item summary .q-text{flex:1 1 auto;min-width:0}
.faq-item summary .q-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;display:grid;place-items:center;
  border:1px solid var(--line-1);color:var(--text-2);
  transition:transform 240ms var(--ease),border-color 240ms var(--ease),color 240ms var(--ease);
}
.faq-item[open] summary .q-icon{transform:rotate(180deg);border-color:var(--line-3);color:var(--primary-2)}
.faq-body{padding:0 22px 20px 62px;font-size:15px;line-height:1.8;color:var(--text-2)}
.faq-body p+p{margin-top:10px}
.faq-body .inline-link{color:var(--primary-2);border-bottom:1px dashed rgba(47,217,198,.5)}
.faq-body .inline-link:hover{color:var(--accent);border-bottom-color:rgba(240,160,75,.6)}

/* ---------- 相关分类 ---------- */
.relate-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.relate-card{
  display:flex;flex-direction:column;gap:12px;padding:24px;border-radius:var(--r-card);
  border:1px solid var(--line-1);background:var(--glass);box-shadow:var(--sh-card);
  transition:transform 240ms var(--ease),box-shadow 240ms var(--ease),border-color 240ms var(--ease);
}
.relate-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:var(--line-3)}
.relate-card .r-badge{
  align-self:flex-start;font-size:12px;padding:4px 10px;border-radius:var(--r-badge);
  color:var(--primary-2);border:1px solid var(--line-2);background:rgba(31,178,196,.08);
}
.relate-card h3{font-size:17px;font-weight:600}
.relate-card p{font-size:14px;color:var(--text-2);line-height:1.7}
.relate-card .r-more{margin-top:auto;font-size:14px;color:var(--primary-2)}
.relate-card:hover .r-more{color:var(--accent)}

/* ---------- 底部 CTA ---------- */
.cta-band{position:relative;overflow:hidden;padding:0}
.cta-inner{
  position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:28px;
  padding:46px 44px;border-radius:calc(var(--r-card) + 4px);
  border:1px solid var(--line-2);background:var(--glass);
  box-shadow:var(--sh-card);
}
.cta-inner::before{
  content:"";position:absolute;inset:-40% -10% auto -10%;height:280px;z-index:-1;
  background:radial-gradient(closest-side,rgba(31,178,196,.30),transparent 72%);
}
.cta-inner h2{font-size:clamp(22px,2.3vw,30px);font-weight:650;line-height:1.35}
.cta-inner p{margin-top:10px;font-size:15px;color:var(--text-2);max-width:560px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;flex:0 0 auto}

/* ---------- 页脚 ---------- */
.site-footer{position:relative;margin-top:88px;border-top:1px solid var(--line-1);background:var(--bg-1)}
.footer-cloud{display:block;width:100%;height:70px;opacity:.08}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;padding:52px 0 40px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--text-2);max-width:300px}
.footer-social{display:flex;gap:10px;margin-top:18px}
.footer-social a{
  width:38px;height:38px;border-radius:10px;display:grid;place-items:center;
  border:1px solid var(--line-1);color:var(--text-2);background:rgba(255,255,255,.03);
  transition:all 240ms var(--ease);
}
.footer-social a:hover{color:var(--primary-2);border-color:var(--line-3);transform:translateY(-3px)}
.footer-col h4{font-size:15px;font-weight:600;margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col li{font-size:14px;color:var(--text-2)}
.footer-col a{color:var(--text-2);transition:color 240ms var(--ease)}
.footer-col a:hover{color:var(--primary-2)}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 0 34px;border-top:1px solid var(--line-1);
  font-size:13px;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .nav-search{max-width:360px}
  .nav-links a{padding:9px 9px;font-size:13.5px}
  .relate-grid{grid-template-columns:repeat(2,1fr)}
  .stats-strip{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:991px){
  :root{--sp-section:64px}
  .nav-links,.nav-cta{display:none}
  .nav-toggle{display:flex}
  .header-inner{gap:12px}
  .locate-grid{grid-template-columns:1fr;gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:36px 30px}
}
@media (max-width:767px){
  .nav-search{display:none}
  .header-inner{justify-content:space-between}
  .mobile-panel .m-search{display:flex}
  .page-title{font-size:clamp(26px,7vw,34px)}
  .hero-lead{font-size:16px}
  .faq-body{padding-left:22px}
  .relate-grid{grid-template-columns:1fr}
}
@media (min-width:768px){
  .mobile-panel .m-search{display:flex}
}
@media (max-width:479px){
  :root{--sp-section:48px}
  .container{padding:0 16px}
  .stats-strip{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .faq-item summary{padding:16px;font-size:15px;gap:12px}
  .faq-item summary .q-mark{display:none}
  .btn{width:100%}
  .cta-actions{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  html{scroll-behavior:auto}
}

/* roulang page: category5 */
:root{
  --bg-0:#070C11;
  --bg-1:#0C141B;
  --bg-2:#101C24;
  --primary:#1FB2C4;
  --primary-2:#2FD9C6;
  --accent:#F0A04B;
  --text-1:#E9F2F4;
  --text-2:#A9BEC4;
  --text-3:#6F858C;
  --ok:#2FBF71;
  --warn:#E8B33A;
  --err:#E5484D;
  --line-1:rgba(255,255,255,.10);
  --line-2:rgba(255,255,255,.16);
  --line-3:rgba(255,255,255,.32);
  --line-pri:rgba(31,178,196,.16);
  --glass:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  --field:#0E1A20;
  --r-card:16px;
  --r-sm:12px;
  --r-badge:6px;
  --shadow:0 24px 60px rgba(0,0,0,.45);
  --shadow-hi:0 30px 70px rgba(0,0,0,.6);
  --inset:inset 0 1px 0 rgba(255,255,255,.06);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sec:88px;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei','Noto Sans SC',system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:.02em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--text-1);text-decoration:none;transition:color .24s var(--ease),border-color .24s var(--ease)}
a:hover{color:var(--primary-2)}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
table{border-collapse:collapse;border-spacing:0}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
::selection{background:rgba(31,178,196,.35);color:#fff}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:var(--sec) 0}
.section--tight{padding:56px 0}
.section-head{max-width:720px;margin-bottom:44px}
.section-head h2{
  font-size:clamp(24px,2.6vw,34px);
  line-height:1.3;
  font-weight:650;
  letter-spacing:.02em;
}
.section-head p{margin-top:14px;color:var(--text-2);font-size:16px;line-height:1.85}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.16em;color:var(--primary-2);
  text-transform:uppercase;margin-bottom:14px;font-weight:600;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--primary-2);opacity:.7}

/* ============ HEADER ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,12,17,.62);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(255,255,255,.05);
  transition:background .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(7,12,17,.86);
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  border-bottom:1px solid var(--line-pri);
  box-shadow:0 1px 0 rgba(31,178,196,.28),0 12px 40px rgba(0,0,0,.5);
}
.header-inner{display:flex;align-items:center;gap:20px;height:72px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  width:34px;height:34px;border-radius:10px;
  display:grid;place-items:center;
  font-size:15px;font-weight:700;color:#04141A;
  background:linear-gradient(120deg,var(--primary),var(--primary-2));
  box-shadow:0 0 22px rgba(31,178,196,.35);
}
.logo-text{font-size:17px;font-weight:700;letter-spacing:.02em;white-space:nowrap}
.logo-text em{font-style:normal;color:var(--primary-2);margin-left:2px}

.nav-search{
  flex:1 1 auto;max-width:560px;
  display:flex;align-items:center;gap:10px;
  height:44px;padding:0 8px 0 16px;
  border-radius:999px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line-pri);
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease),background .24s var(--ease);
}
.nav-search:focus-within{
  border-color:rgba(31,178,196,.55);
  box-shadow:0 0 0 3px rgba(31,178,196,.14),0 0 28px rgba(31,178,196,.18);
  background:rgba(14,26,32,.9);
}
.nav-search svg{flex:0 0 auto;color:var(--text-3)}
.nav-search input{
  flex:1 1 auto;min-width:0;height:100%;
  background:transparent;border:0;outline:none;
  font-size:14px;color:var(--text-1);
}
.nav-search input::placeholder{color:var(--text-3)}
.nav-search .search-submit{
  flex:0 0 auto;width:32px;height:32px;border-radius:50%;
  display:grid;place-items:center;
  background:linear-gradient(120deg,var(--primary),var(--primary-2));
  color:#04141A;transition:filter .24s var(--ease),transform .24s var(--ease);
}
.nav-search .search-submit:hover{filter:brightness(1.08);transform:translateY(-1px)}
.nav-search .search-submit:active{transform:translateY(1px)}

.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto;flex:0 0 auto}
.nav-links a{
  position:relative;padding:8px 12px;border-radius:10px;
  font-size:14.5px;color:var(--text-2);white-space:nowrap;
  transition:color .24s var(--ease),background .24s var(--ease);
}
.nav-links a:hover{color:var(--text-1);background:rgba(255,255,255,.05)}
.nav-links a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  border-radius:2px;background:linear-gradient(90deg,var(--primary),var(--primary-2));
  transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);
  box-shadow:0 0 12px rgba(31,178,196,.7);
}
.nav-links a.is-active{color:var(--text-1);font-weight:600}
.nav-links a.is-active::after{transform:scaleX(1)}

.nav-cta{
  flex:0 0 auto;height:40px;display:inline-flex;align-items:center;
  padding:0 20px;font-size:14.5px;
}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line-2);color:var(--text-1);
  align-items:center;justify-content:center;flex:0 0 auto;
}
.nav-toggle:hover{border-color:var(--primary);background:rgba(31,178,196,.08)}

.mobile-panel{
  display:none;
  border-top:1px solid var(--line-1);
  background:rgba(9,16,22,.98);
  backdrop-filter:blur(20px);
  padding:18px 0 24px;
}
.mobile-panel.is-open{display:block}
.mobile-panel .nav-search{max-width:none;width:100%;margin-bottom:16px}
.mobile-links{display:flex;flex-direction:column;gap:4px}
.mobile-links a{
  padding:12px 14px;border-radius:12px;font-size:15px;color:var(--text-2);
  border:1px solid transparent;
}
.mobile-links a:hover{color:var(--text-1);background:rgba(255,255,255,.05)}
.mobile-links a.is-active{
  color:var(--text-1);font-weight:600;
  border-color:var(--line-pri);background:rgba(31,178,196,.08);
}
.mobile-panel .btn{width:100%;justify-content:center;margin-top:16px}

/* ============ BUTTONS ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:12px;
  font-size:15px;font-weight:600;letter-spacing:.02em;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),filter .24s var(--ease),border-color .24s var(--ease),background .24s var(--ease),color .24s var(--ease);
  cursor:pointer;
}
.btn-primary{
  background:linear-gradient(120deg,var(--primary),var(--primary-2));
  color:#04141A;box-shadow:0 10px 30px rgba(31,178,196,.24);
}
.btn-primary:hover{
  color:#04141A;filter:brightness(1.08);
  transform:translateY(-2px);
  box-shadow:0 0 32px rgba(31,178,196,.45),0 14px 34px rgba(0,0,0,.4);
}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{
  background:transparent;border:1px solid var(--line-3);color:var(--text-1);
}
.btn-ghost:hover{border-color:var(--primary);background:rgba(31,178,196,.08);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{padding:10px 20px;font-size:14px;border-radius:10px}

/* ============ HERO ============ */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line-1)}
.page-hero-bg{
  position:absolute;inset:0;
  background-size:cover;background-position:center;
  opacity:.30;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(7,12,17,.72) 0%,rgba(7,12,17,.92) 62%,var(--bg-0) 100%),
    radial-gradient(900px 420px at 18% 20%,rgba(31,178,196,.20),transparent 70%);
}
.cloud-line{
  position:absolute;left:0;right:0;bottom:0;width:100%;height:130px;
  opacity:.08;z-index:1;pointer-events:none;
}
.page-hero-inner{position:relative;z-index:2;padding:64px 0 72px;max-width:860px}
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--text-3);margin-bottom:22px;flex-wrap:wrap}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--primary-2)}
.breadcrumb span{color:var(--text-3);opacity:.7}
.page-title{
  font-size:clamp(30px,4.2vw,48px);line-height:1.25;font-weight:700;letter-spacing:.02em;
}
.page-title em{
  display:block;font-style:normal;margin-top:12px;
  font-size:clamp(15px,1.5vw,19px);font-weight:600;letter-spacing:.08em;
  color:var(--primary-2);
}
.lead{margin-top:22px;font-size:17px;line-height:1.85;color:var(--text-2);max-width:660px}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.tag{
  display:inline-flex;align-items:center;
  padding:6px 14px;border-radius:var(--r-badge);
  font-size:13px;color:var(--text-2);
  background:rgba(255,255,255,.05);
  border:1px solid var(--line-pri);
}
.tag--accent{color:var(--accent);border-color:rgba(240,160,75,.28);background:rgba(240,160,75,.08)}

/* ============ STATUS STRIP ============ */
.status-strip{
  margin-top:-28px;position:relative;z-index:5;
  display:grid;grid-template-columns:repeat(3,1fr);
  border-radius:var(--r-card);
  background:var(--glass);
  border:1px solid var(--line-pri);
  box-shadow:var(--shadow),var(--inset);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  overflow:hidden;
}
.status-item{padding:22px 26px;border-right:1px solid var(--line-1)}
.status-item:last-child{border-right:0}
.status-label{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3)}
.pulse{width:8px;height:8px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 0 rgba(47,191,113,.6);animation:pulse 2.4s infinite}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(47,191,113,.55)}
  70%{box-shadow:0 0 0 10px rgba(47,191,113,0)}
  100%{box-shadow:0 0 0 0 rgba(47,191,113,0)}
}
.status-value{margin-top:8px;font-size:20px;font-weight:600;font-family:'Inter','DIN Alternate',system-ui,sans-serif;color:var(--text-1)}
.status-value small{font-size:13px;font-weight:400;color:var(--text-3);margin-left:6px;font-family:inherit}

/* ============ PLAN CARDS ============ */
.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}
.plan-card{
  position:relative;
  border-radius:var(--r-card);
  background:var(--glass);
  border:1px solid var(--line-1);
  box-shadow:var(--shadow),var(--inset);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  padding:28px 26px;
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.plan-card:hover{transform:translateY(-4px);border-color:var(--line-3);box-shadow:var(--shadow-hi),var(--inset)}
.plan-card.is-featured{
  transform:scale(1.03);
  border-color:rgba(31,178,196,.5);
  box-shadow:0 0 0 1px rgba(31,178,196,.28),0 30px 70px rgba(0,0,0,.55),var(--inset);
  background:linear-gradient(160deg,rgba(31,178,196,.12),rgba(255,255,255,.02));
}
.plan-card.is-featured:hover{transform:scale(1.03) translateY(-4px)}
.plan-badge{
  position:absolute;top:-12px;right:20px;
  padding:4px 12px;border-radius:999px;
  font-size:12px;font-weight:600;color:#241201;
  background:linear-gradient(120deg,var(--accent),#F7C07A);
  box-shadow:0 8px 22px rgba(240,160,75,.35);
}
.plan-name{font-size:20px;font-weight:600;line-height:1.4}
.plan-for{margin-top:6px;font-size:13.5px;color:var(--text-3)}
.plan-price{
  margin:20px 0 6px;display:flex;align-items:baseline;gap:6px;
  font-family:'Inter','DIN Alternate',system-ui,sans-serif;
  font-size:36px;font-weight:600;letter-spacing:-.01em;
}
.plan-price span{font-size:14px;font-weight:400;color:var(--text-3);font-family:inherit}
.plan-note{font-size:13px;color:var(--text-3);padding-bottom:20px;border-bottom:1px solid var(--line-1)}
.plan-list{margin:20px 0 26px;display:flex;flex-direction:column;gap:12px}
.plan-list li{display:flex;gap:10px;font-size:14.5px;line-height:1.7;color:var(--text-2)}
.plan-list li::before{
  content:"";flex:0 0 auto;width:6px;height:6px;margin-top:9px;border-radius:2px;
  background:linear-gradient(120deg,var(--primary),var(--primary-2));
}
.plan-list li.is-hi{color:var(--text-1)}
.plan-card .btn{width:100%}

/* ============ COMPARE TABLE ============ */
.table-wrap{
  border-radius:var(--r-card);
  border:1px solid var(--line-1);
  background:var(--glass);
  box-shadow:var(--shadow),var(--inset);
  overflow-x:auto;
  overflow-y:hidden;
  -webkit-overflow-scrolling:touch;
}
.compare{width:100%;min-width:720px}
.compare th,.compare td{
  padding:15px 20px;text-align:left;font-size:14.5px;line-height:1.7;
  border-bottom:1px solid rgba(255,255,255,.06);
  white-space:nowrap;
}
.compare thead th{
  background:rgba(255,255,255,.055);
  font-weight:600;color:var(--text-1);font-size:14px;
  border-bottom:1px solid var(--line-2);
  position:sticky;top:0;z-index:2;
}
.compare tbody tr:hover td{background:rgba(31,178,196,.05)}
.compare td:first-child,.compare th:first-child{
  position:sticky;left:0;z-index:1;
  background:#0E1A20;color:var(--text-1);font-weight:500;
}
.compare thead th:first-child{z-index:3;background:#101C24}
.compare td{color:var(--text-2)}
.compare td.col-b{color:var(--text-1);background:rgba(31,178,196,.06)}
.compare tbody tr:last-child td{border-bottom:0}
.tick{color:var(--primary-2);font-weight:600}
.dash{color:var(--text-3)}
.table-caption{margin-top:14px;font-size:13px;color:var(--text-3)}

/* ============ STEPS ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step{
  position:relative;padding:26px 22px 24px;
  border-radius:var(--r-card);
  background:var(--bg-1);
  border:1px solid var(--line-1);
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.step:hover{transform:translateY(-4px);border-color:var(--line-pri);box-shadow:0 20px 50px rgba(0,0,0,.45)}
.step-no{
  font-family:'Inter','DIN Alternate',system-ui,sans-serif;
  font-size:26px;font-weight:600;line-height:1;
  background:linear-gradient(120deg,var(--primary),var(--primary-2));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.step h3{margin-top:14px;font-size:17px;font-weight:600}
.step p{margin-top:10px;font-size:14.5px;line-height:1.8;color:var(--text-2)}
.step::after{
  content:"";position:absolute;top:38px;right:-11px;width:22px;height:1px;
  background:linear-gradient(90deg,var(--primary),transparent);
}
.step:last-child::after{display:none}

/* ============ SPLIT FEATURE ============ */
.split{display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center}
.split-media{
  border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line-1);
  box-shadow:var(--shadow);
  aspect-ratio:16/11;position:relative;
}
.split-media img{width:100%;height:100%;object-fit:cover}
.split-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 40%,rgba(7,12,17,.72));
}
.split h2{font-size:clamp(23px,2.4vw,32px);line-height:1.32;font-weight:650}
.split p{margin-top:16px;color:var(--text-2);font-size:16px;line-height:1.85}
.check-list{margin-top:26px;display:grid;gap:14px}
.check-list li{display:flex;gap:12px;font-size:15px;color:var(--text-2);line-height:1.75}
.check-list li svg{flex:0 0 auto;margin-top:5px;color:var(--primary-2)}
.check-list li strong{color:var(--text-1);font-weight:600}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:960px}
.faq-item{
  border-radius:var(--r-sm);
  background:var(--glass);
  border:1px solid var(--line-1);
  box-shadow:var(--inset);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transition:border-color .24s var(--ease),background .24s var(--ease);
}
.faq-item:hover{border-color:var(--line-2)}
.faq-item.is-open{border-color:rgba(31,178,196,.42);background:linear-gradient(160deg,rgba(31,178,196,.09),rgba(255,255,255,.02))}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;text-align:left;
  font-size:16px;font-weight:600;color:var(--text-1);line-height:1.6;
}
.faq-icon{
  flex:0 0 auto;width:22px;height:22px;position:relative;
  transition:transform .3s var(--ease);color:var(--primary-2);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:currentColor;border-radius:2px;
}
.faq-icon::before{width:12px;height:1.6px;transform:translate(-50%,-50%)}
.faq-icon::after{width:1.6px;height:12px;transform:translate(-50%,-50%);transition:opacity .24s var(--ease)}
.faq-item.is-open .faq-icon{transform:rotate(180deg)}
.faq-item.is-open .faq-icon::after{opacity:0}
.faq-a{
  display:grid;grid-template-rows:0fr;
  transition:grid-template-rows .3s var(--ease);
}
.faq-item.is-open .faq-a{grid-template-rows:1fr}
.faq-a-inner{overflow:hidden}
.faq-a p{
  padding:0 22px 20px;font-size:15px;line-height:1.85;color:var(--text-2);
}

/* ============ RELATED ============ */
.rel-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.rel-card{
  display:flex;flex-direction:column;overflow:hidden;
  border-radius:var(--r-card);
  background:var(--glass);
  border:1px solid var(--line-1);
  box-shadow:var(--shadow),var(--inset);
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.rel-card:hover{transform:translateY(-4px);border-color:var(--line-3);box-shadow:var(--shadow-hi),var(--inset)}
.rel-cover{aspect-ratio:16/9;overflow:hidden;position:relative}
.rel-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.rel-card:hover .rel-cover img{transform:scale(1.05)}
.rel-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 50%,rgba(7,12,17,.7))}
.rel-body{padding:18px 20px 22px}
.rel-body h3{font-size:16.5px;font-weight:600;line-height:1.5}
.rel-body p{margin-top:8px;font-size:13.5px;line-height:1.7;color:var(--text-3)}
.rel-more{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:13.5px;color:var(--primary-2)}

/* ============ CTA ============ */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:var(--r-card);
  border:1px solid var(--line-pri);
  background:linear-gradient(120deg,rgba(31,178,196,.16),rgba(47,217,198,.06));
  box-shadow:var(--shadow),var(--inset);
  padding:48px 46px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(600px 240px at 12% 50%,rgba(31,178,196,.35),transparent 70%);
  pointer-events:none;
}
.cta-band svg.cta-cloud{
  position:absolute;right:-40px;top:0;width:60%;height:100%;opacity:.08;pointer-events:none;
}
.cta-text{position:relative;z-index:1;max-width:620px}
.cta-text h2{font-size:clamp(22px,2.4vw,30px);line-height:1.35;font-weight:650}
.cta-text p{margin-top:12px;color:var(--text-2);font-size:15.5px;line-height:1.8}
.cta-actions{position:relative;z-index:1;display:flex;gap:14px;flex-wrap:wrap;flex:0 0 auto}

/* ============ FOOTER ============ */
.site-footer{
  position:relative;margin-top:var(--sec);
  background:var(--bg-1);
  border-top:1px solid var(--line-1);
  padding:64px 0 28px;
}
.footer-cloud{
  position:absolute;top:0;left:0;width:100%;height:70px;opacity:.08;pointer-events:none;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;
  position:relative;z-index:1;
}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{color:var(--text-3);font-size:14px;line-height:1.8;max-width:290px}
.footer-social{display:flex;gap:10px;margin-top:18px}
.footer-social a{
  width:36px;height:36px;border-radius:10px;display:grid;place-items:center;
  border:1px solid var(--line-1);color:var(--text-2);
  transition:border-color .24s var(--ease),color .24s var(--ease),background .24s var(--ease),transform .24s var(--ease);
}
.footer-social a:hover{border-color:var(--primary);color:var(--primary-2);background:rgba(31,178,196,.08);transform:translateY(-2px)}
.footer-col h4{font-size:15px;font-weight:600;margin-bottom:16px;color:var(--text-1)}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a,.footer-col li{font-size:14px;color:var(--text-3);line-height:1.7}
.footer-col a:hover{color:var(--primary-2)}
.footer-bottom{
  position:relative;z-index:1;
  margin-top:48px;padding-top:22px;
  border-top:1px solid var(--line-1);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--primary-2)}

/* ============ RESPONSIVE ============ */
@media (max-width:1199px){
  :root{--sec:72px}
  .nav-search{max-width:340px}
  .nav-links a{padding:8px 9px;font-size:14px}
  .plan-grid{gap:18px}
  .rel-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
  .footer-col:last-child{grid-column:span 3}
}
@media (max-width:991px){
  :root{--sec:64px}
  .header-inner{height:auto;flex-wrap:wrap;padding-top:12px;padding-bottom:12px;gap:14px}
  .nav-links{display:none}
  .nav-toggle{display:inline-flex;margin-left:auto}
  .nav-cta{display:none}
  .nav-search{order:3;flex:1 0 100%;max-width:none}
  .split{grid-template-columns:1fr;gap:32px}
  .split-media{aspect-ratio:16/9}
  .steps{grid-template-columns:repeat(2,1fr)}
  .step::after{display:none}
  .plan-grid{grid-template-columns:1fr;gap:22px}
  .plan-card.is-featured{transform:none}
  .plan-card.is-featured:hover{transform:translateY(-4px)}
  .cta-band{flex-direction:column;align-items:flex-start;padding:38px 28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-col:last-child{grid-column:span 2}
}
@media (max-width:767px){
  :root{--sec:52px}
  .container{padding:0 16px}
  .status-strip{grid-template-columns:1fr;margin-top:0;border-radius:var(--r-sm)}
  .status-item{border-right:0;border-bottom:1px solid var(--line-1);padding:18px 20px}
  .status-item:last-child{border-bottom:0}
  .page-hero-inner{padding:40px 0 52px}
  .section-head{margin-bottom:30px}
  .rel-grid{grid-template-columns:1fr}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto;justify-content:center}
  .footer-grid{grid-template-columns:1fr}
  .footer-col:last-child{grid-column:span 1}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .logo-text{font-size:15.5px}
  .nav-search{height:40px;padding-left:12px}
  .steps{grid-template-columns:1fr}
  .faq-q{font-size:15px;padding:16px 18px}
  .faq-a p{padding:0 18px 18px}
  .compare th,.compare td{padding:13px 14px;font-size:13.5px}
  .cta-band{padding:30px 20px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}