/* roulang page: index */
:root{
  --bg:#060b18;
  --bg-soft:#0a1225;
  --panel:rgba(255,255,255,.045);
  --panel-strong:rgba(255,255,255,.075);
  --border:rgba(148,163,184,.18);
  --border-strong:rgba(62,166,255,.42);
  --text:#e8eefc;
  --muted:#93a3c0;
  --brand:#3ea6ff;
  --brand-2:#7c5cff;
  --accent:#28e0c8;
  --radius:16px;
  --radius-sm:12px;
  --shadow:0 18px 50px rgba(2,8,24,.62);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit}
img{max-width:100%;height:auto;display:block}
button{font-family:inherit}
.site-container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,11,24,.86);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(148,163,184,.14);
}
.header-top{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-top:14px;padding-bottom:14px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;min-width:0}
.brand-mark{
  width:42px;height:42px;flex:0 0 42px;border-radius:13px;
  display:flex;align-items:center;justify-content:center;
  font-size:19px;font-weight:800;color:#fff;
  background:linear-gradient(135deg,#3ea6ff,#7c5cff);
  box-shadow:0 10px 26px rgba(62,166,255,.38);
}
.brand-text{display:flex;flex-direction:column;min-width:0}
.brand-text strong{font-size:18px;font-weight:800;letter-spacing:.5px;color:#fff;line-height:1.3}
.brand-text em{font-style:normal;font-size:12.5px;color:var(--muted);line-height:1.5;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.header-cta{
  flex:0 0 auto;display:inline-flex;align-items:center;gap:8px;
  padding:10px 20px;border-radius:999px;text-decoration:none;
  font-size:14px;font-weight:600;color:#fff;
  background:linear-gradient(135deg,#3ea6ff,#7c5cff);
  box-shadow:0 10px 26px rgba(62,166,255,.34);
  transition:transform .25s ease,box-shadow .25s ease;
}
.header-cta:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(62,166,255,.5)}
.header-cta:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.header-channels{border-top:1px solid rgba(148,163,184,.1)}
.channel-row{display:flex;align-items:center;gap:8px;overflow-x:auto;padding-top:9px;padding-bottom:11px;scrollbar-width:none}
.channel-row::-webkit-scrollbar{display:none}
.channel-link{
  flex:0 0 auto;white-space:nowrap;text-decoration:none;
  padding:8px 18px;border-radius:999px;font-size:14.5px;color:var(--muted);
  border:1px solid transparent;
  transition:color .2s ease,background .2s ease,border-color .2s ease;
}
.channel-link:hover{color:#fff;background:rgba(255,255,255,.07)}
.channel-link.active{
  color:#fff;font-weight:600;
  background:linear-gradient(135deg,rgba(62,166,255,.24),rgba(124,92,255,.24));
  border-color:var(--border-strong);
}
.channel-link:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

/* Hero */
.hero{position:relative;overflow:hidden;padding:70px 0 66px;text-align:center}
.hero::before{
  content:"";position:absolute;left:0;right:0;top:-40%;height:640px;pointer-events:none;
  background:
    radial-gradient(620px 300px at 50% 0%,rgba(62,166,255,.30),transparent 72%),
    radial-gradient(520px 260px at 18% 24%,rgba(124,92,255,.24),transparent 74%),
    radial-gradient(460px 220px at 84% 16%,rgba(40,224,200,.14),transparent 72%);
  filter:blur(6px);
}
.hero-inner{position:relative;z-index:1;width:100%;max-width:920px;margin:0 auto;padding:0 20px}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;border-radius:999px;font-size:13px;color:#bcd2f5;
  background:rgba(62,166,255,.12);border:1px solid rgba(62,166,255,.32);
}
.hero-eyebrow i{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 12px var(--accent)}
.hero h1{
  margin:22px 0 0;font-size:clamp(27px,4.1vw,44px);line-height:1.3;
  font-weight:800;letter-spacing:.4px;color:#fff;
}
.hero h1 span{
  background:linear-gradient(120deg,#5ec2ff,#9b8bff 60%,#28e0c8);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{
  max-width:800px;margin:22px auto 0;font-size:15.5px;line-height:1.95;
  color:#a9bada;text-align:left;
}
.hero-search{
  display:flex;align-items:center;gap:10px;max-width:620px;margin:30px auto 0;
  padding:8px 8px 8px 20px;border-radius:999px;
  background:rgba(255,255,255,.055);border:1px solid var(--border);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:0 16px 40px rgba(2,8,24,.5);
}
.hero-search input{
  flex:1 1 auto;min-width:0;background:transparent;border:0;outline:none;
  color:var(--text);font-size:15px;padding:8px 0;
}
.hero-search input::placeholder{color:#7d8ead}
.hero-search button{
  flex:0 0 auto;border:0;cursor:pointer;padding:11px 24px;border-radius:999px;
  font-size:14.5px;font-weight:600;color:#fff;
  background:linear-gradient(135deg,#3ea6ff,#7c5cff);
  box-shadow:0 8px 24px rgba(62,166,255,.42);
  transition:transform .2s ease,box-shadow .2s ease;
}
.hero-search button:hover{transform:translateY(-1px);box-shadow:0 14px 32px rgba(62,166,255,.55)}
.hero-search button:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.hero-tags{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-top:20px}
.hero-tag{
  padding:7px 15px;border-radius:999px;text-decoration:none;
  font-size:13px;color:#a9bada;
  background:rgba(255,255,255,.035);border:1px solid var(--border);
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.hero-tag:hover{color:#fff;border-color:var(--border-strong);background:rgba(62,166,255,.12)}
.hero-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;max-width:780px;margin:36px auto 0}
.hero-stat{
  min-width:0;padding:18px 16px;border-radius:14px;text-align:center;
  background:var(--panel);border:1px solid var(--border);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
}
.hero-stat strong{display:block;font-size:22px;font-weight:800;color:#fff;line-height:1.3}
.hero-stat span{display:block;margin-top:4px;font-size:12.5px;color:var(--muted)}

/* 通用板块 */
.section{padding:66px 0;position:relative}
.section--alt{
  background:linear-gradient(180deg,rgba(10,18,37,.92),rgba(6,11,24,.35));
  border-top:1px solid rgba(148,163,184,.1);
  border-bottom:1px solid rgba(148,163,184,.1);
}
.section-head{max-width:800px;margin:0 auto 38px}
.section-head.center{text-align:center}
.section-head h2{
  margin:0;font-size:clamp(21px,2.6vw,30px);line-height:1.4;
  font-weight:800;color:#fff;letter-spacing:.3px;
}
.section-head h2 .hl{color:#6ec6ff}
.sec-lead{
  max-width:760px;margin:14px auto 0;font-size:15px;line-height:1.95;color:var(--muted);
  text-align:left;
}
.section-head.center .sec-lead{text-align:left}
.sec-note{
  max-width:760px;margin:18px auto 0;font-size:13.5px;line-height:1.85;color:#8296b6;
  padding:12px 16px;border-left:3px solid rgba(62,166,255,.5);
  background:rgba(62,166,255,.07);border-radius:0 10px 10px 0;text-align:left;
}

/* 卡片 */
.card{
  min-width:0;padding:24px;border-radius:var(--radius);
  background:var(--panel);border:1px solid var(--border);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  transition:transform .26s ease,border-color .26s ease,box-shadow .26s ease;
}
.card:hover{transform:translateY(-4px);border-color:var(--border-strong);box-shadow:0 18px 42px rgba(16,70,160,.3)}
.card h3{margin:0 0 10px;font-size:17px;font-weight:700;color:#fff;line-height:1.5}
.card p{margin:0;font-size:14.5px;line-height:1.9;color:var(--muted)}
.card-index{
  display:inline-flex;align-items:center;justify-content:center;
  width:30px;height:30px;border-radius:9px;margin-bottom:14px;
  font-size:13px;font-weight:700;color:#8fd0ff;
  background:rgba(62,166,255,.14);border:1px solid rgba(62,166,255,.28);
}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}

/* 下载区 */
.download-band{
  position:relative;overflow:hidden;
  border-radius:22px;padding:36px;
  background:linear-gradient(150deg,rgba(62,166,255,.16),rgba(124,92,255,.14) 55%,rgba(40,224,200,.1));
  border:1px solid rgba(62,166,255,.3);
  box-shadow:var(--shadow);
}
.download-band::after{
  content:"";position:absolute;right:-60px;top:-70px;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,rgba(62,166,255,.35),transparent 70%);pointer-events:none;
}
.download-head{position:relative;z-index:1;max-width:720px}
.download-head h2{margin:0;font-size:clamp(21px,2.5vw,28px);font-weight:800;color:#fff;line-height:1.4}
.download-head p{margin:14px 0 0;font-size:15px;line-height:1.9;color:#b8c9e6}
.download-grid{position:relative;z-index:1;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:28px}
.dl-card{
  min-width:0;padding:22px;border-radius:var(--radius);
  background:rgba(6,11,24,.55);border:1px solid rgba(148,163,184,.22);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  display:flex;flex-direction:column;
  transition:transform .26s ease,border-color .26s ease;
}
.dl-card:hover{transform:translateY(-4px);border-color:var(--border-strong)}
.dl-icon{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  font-size:18px;color:#9bd6ff;background:rgba(62,166,255,.15);border:1px solid rgba(62,166,255,.3);
  margin-bottom:14px;
}
.dl-card h3{margin:0 0 8px;font-size:16.5px;font-weight:700;color:#fff}
.dl-card p{margin:0 0 18px;font-size:13.5px;line-height:1.85;color:var(--muted)}
.dl-card .btn-glow{margin-top:auto}
.btn-glow{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:12px;text-decoration:none;
  font-size:14.5px;font-weight:600;color:#fff;
  background:linear-gradient(135deg,#3ea6ff,#7c5cff);
  box-shadow:0 10px 28px rgba(62,166,255,.38);
  transition:transform .22s ease,box-shadow .22s ease;
}
.btn-glow:hover{transform:translateY(-2px);box-shadow:0 16px 38px rgba(62,166,255,.55)}
.btn-glow:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:12px;text-decoration:none;
  font-size:14.5px;font-weight:600;color:var(--text);
  background:rgba(255,255,255,.05);border:1px solid var(--border);
  transition:background .22s ease,border-color .22s ease,transform .22s ease;
}
.btn-ghost:hover{background:rgba(255,255,255,.1);border-color:var(--border-strong);transform:translateY(-2px)}
.btn-ghost:focus-visible{outline:2px solid var(--accent);outline-offset:3px}

/* 流程步骤 */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;counter-reset:step}
.step{
  min-width:0;position:relative;padding:24px 22px;border-radius:var(--radius);
  background:var(--panel);border:1px solid var(--border);
  transition:transform .26s ease,border-color .26s ease;
}
.step:hover{transform:translateY(-4px);border-color:var(--border-strong)}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;margin-bottom:14px;
  font-size:14px;font-weight:800;color:#062033;
  background:linear-gradient(135deg,#5ec2ff,#28e0c8);
}
.step h3{margin:0 0 8px;font-size:16px;font-weight:700;color:#fff}
.step p{margin:0;font-size:14px;line-height:1.85;color:var(--muted)}

/* 情景对照 */
.scene-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.scene{
  min-width:0;padding:24px;border-radius:var(--radius);
  background:var(--panel);border:1px solid var(--border);
}
.scene .scene-tag{
  display:inline-block;padding:4px 12px;border-radius:999px;font-size:12.5px;font-weight:600;
  color:#8fd0ff;background:rgba(62,166,255,.14);border:1px solid rgba(62,166,255,.3);
}
.scene h3{margin:14px 0 12px;font-size:17px;font-weight:700;color:#fff}
.scene ul{margin:0;padding:0;list-style:none}
.scene li{
  display:flex;justify-content:space-between;gap:12px;
  padding:9px 0;font-size:14px;color:var(--muted);
  border-bottom:1px dashed rgba(148,163,184,.16);
}
.scene li:last-child{border-bottom:0}
.scene li b{color:#fff;font-weight:600;white-space:nowrap}

/* 频道矩阵 */
.channel-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.channel-card{
  min-width:0;display:flex;flex-direction:column;
  padding:26px;border-radius:var(--radius);text-decoration:none;
  background:linear-gradient(150deg,rgba(62,166,255,.13),rgba(124,92,255,.1));
  border:1px solid rgba(62,166,255,.26);
  transition:transform .26s ease,border-color .26s ease,box-shadow .26s ease;
}
.channel-card:hover{transform:translateY(-4px);border-color:var(--border-strong);box-shadow:0 18px 42px rgba(16,70,160,.32)}
.channel-card h3{margin:0 0 10px;font-size:17.5px;font-weight:700;color:#fff}
.channel-card p{margin:0;font-size:14.5px;line-height:1.9;color:#a9bada}
.channel-card .more{margin-top:16px;font-size:13.5px;font-weight:600;color:#6ec6ff}

/* 对比 */
.compare{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.compare-col{
  min-width:0;padding:26px;border-radius:var(--radius);
  border:1px solid var(--border);background:var(--panel);
}
.compare-col.warn{border-color:rgba(255,138,120,.3);background:rgba(255,120,100,.06)}
.compare-col h3{margin:0 0 16px;font-size:17px;font-weight:700;color:#fff;display:flex;align-items:center;gap:9px}
.compare-col h3 i{width:9px;height:9px;border-radius:50%;background:var(--accent);box-shadow:0 0 12px var(--accent)}
.compare-col.warn h3 i{background:#ff8a78;box-shadow:0 0 12px #ff8a78}
.compare-col ul{margin:0;padding:0;list-style:none}
.compare-col li{
  position:relative;padding:10px 0 10px 20px;font-size:14.5px;line-height:1.85;color:var(--muted);
  border-bottom:1px dashed rgba(148,163,184,.14);
}
.compare-col li:last-child{border-bottom:0}
.compare-col li::before{content:"";position:absolute;left:0;top:20px;width:6px;height:6px;border-radius:50%;background:rgba(148,163,184,.5)}

/* 痛点 */
.pain-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.pain{
  min-width:0;display:flex;gap:16px;padding:22px;border-radius:var(--radius);
  background:var(--panel);border:1px solid var(--border);
  transition:border-color .26s ease,transform .26s ease;
}
.pain:hover{border-color:rgba(255,138,120,.42);transform:translateY(-3px)}
.pain-num{
  flex:0 0 36px;width:36px;height:36px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:800;color:#ffb4a8;
  background:rgba(255,138,120,.14);border:1px solid rgba(255,138,120,.3);
}
.pain-body{min-width:0}
.pain-body h3{margin:0 0 8px;font-size:16px;font-weight:700;color:#fff;line-height:1.5}
.pain-body p{margin:0;font-size:14px;line-height:1.85;color:var(--muted)}

/* 保障徽章 */
.badge-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.badge-item{
  min-width:0;padding:22px;border-radius:var(--radius);text-align:center;
  background:var(--panel);border:1px solid var(--border);
  transition:border-color .26s ease,transform .26s ease;
}
.badge-item:hover{border-color:var(--border-strong);transform:translateY(-3px)}
.badge-icon{
  width:46px;height:46px;margin:0 auto 14px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;font-size:19px;color:#8fd0ff;
  background:rgba(62,166,255,.14);border:1px solid rgba(62,166,255,.3);
}
.badge-item h3{margin:0 0 8px;font-size:15.5px;font-weight:700;color:#fff}
.badge-item p{margin:0;font-size:13.5px;line-height:1.85;color:var(--muted)}

/* 资讯 */
.news-layout{display:grid;grid-template-columns:minmax(0,1.65fr) minmax(0,1fr);gap:24px;align-items:start}
.news-list{display:grid;grid-template-columns:minmax(0,1fr);gap:16px}
.news-item{
  display:block;min-width:0;padding:22px;border-radius:var(--radius);text-decoration:none;
  background:var(--panel);border:1px solid var(--border);
  transition:transform .26s ease,border-color .26s ease,box-shadow .26s ease;
}
.news-item:hover{transform:translateY(-3px);border-color:var(--border-strong);box-shadow:0 16px 38px rgba(16,70,160,.28)}
.news-item h3{margin:0 0 10px;font-size:16.5px;font-weight:700;color:#fff;line-height:1.55}
.news-item p{
  margin:0;font-size:14px;line-height:1.85;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:14px;font-size:12.5px;color:#7d8ead}
.news-tag{
  padding:3px 11px;border-radius:999px;color:#8fd0ff;
  background:rgba(62,166,255,.13);border:1px solid rgba(62,166,255,.26);
}
.news-empty{
  padding:36px 24px;border-radius:var(--radius);text-align:center;
  font-size:14.5px;color:var(--muted);
  background:var(--panel);border:1px dashed rgba(148,163,184,.28);
}
.side-card{
  padding:24px;border-radius:var(--radius);
  background:linear-gradient(160deg,rgba(124,92,255,.16),rgba(62,166,255,.08));
  border:1px solid rgba(124,92,255,.28);
}
.side-card h3{margin:0 0 12px;font-size:16px;font-weight:700;color:#fff}
.side-card p{margin:0 0 12px;font-size:14px;line-height:1.9;color:#b3c4e0}
.side-card p:last-child{margin-bottom:0}
.side-list{margin:0;padding:0;list-style:none}
.side-list li{
  padding:9px 0;font-size:13.5px;color:#a9bada;
  border-bottom:1px dashed rgba(148,163,184,.18);
}
.side-list li:last-child{border-bottom:0}

/* FAQ */
.faq-list{display:grid;grid-template-columns:minmax(0,1fr);gap:14px;max-width:940px;margin:0 auto}
.faq-item{
  padding:22px 24px;border-radius:var(--radius);
  background:var(--panel);border:1px solid var(--border);
  transition:border-color .24s ease;
}
.faq-item:hover{border-color:var(--border-strong)}
.faq-item h3{
  margin:0 0 10px;font-size:16px;font-weight:700;color:#fff;line-height:1.6;
  display:flex;gap:10px;align-items:flex-start;
}
.faq-item h3 span{
  flex:0 0 22px;width:22px;height:22px;border-radius:7px;margin-top:2px;
  display:flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:800;color:#8fd0ff;
  background:rgba(62,166,255,.15);border:1px solid rgba(62,166,255,.3);
}
.faq-item p{margin:0;font-size:14.5px;line-height:1.92;color:var(--muted)}

/* 收口 */
.join-band{
  padding:46px 36px;border-radius:22px;text-align:center;
  background:
    radial-gradient(600px 240px at 50% 0%,rgba(62,166,255,.25),transparent 72%),
    linear-gradient(160deg,rgba(124,92,255,.16),rgba(6,11,24,.4));
  border:1px solid rgba(62,166,255,.3);
  box-shadow:var(--shadow);
}
.join-band h2{margin:0;font-size:clamp(21px,2.6vw,29px);font-weight:800;color:#fff;line-height:1.42}
.join-band p{max-width:720px;margin:16px auto 0;font-size:15px;line-height:1.95;color:#b3c4e0}
.join-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:14px;margin-top:26px}

/* 页脚 */
.site-footer{
  border-top:1px solid rgba(148,163,184,.14);
  background:rgba(4,8,20,.92);
  padding:56px 0 28px;
}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.5fr) repeat(2,minmax(0,1fr));gap:32px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand .brand-mark{width:38px;height:38px;flex:0 0 38px;font-size:17px;border-radius:11px}
.footer-brand strong{font-size:16.5px;font-weight:800;color:#fff}
.footer-desc{margin:0;font-size:13.5px;line-height:1.9;color:var(--muted);max-width:420px}
.footer-col h3{margin:0 0 14px;font-size:14.5px;font-weight:700;color:#fff;letter-spacing:.4px}
.footer-col a{
  display:block;padding:5px 0;font-size:13.5px;color:var(--muted);text-decoration:none;
  transition:color .2s ease;
}
.footer-col a:hover{color:#6ec6ff}
.footer-col a:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.footer-friend{
  margin-top:36px;padding-top:24px;border-top:1px dashed rgba(148,163,184,.2);
}
.footer-friend h3{margin:0 0 14px;font-size:14px;font-weight:700;color:#fff}
.friend-links{display:flex;flex-wrap:wrap;gap:10px 20px;font-size:13.5px;color:var(--muted);line-height:1.9}
.friend-links a{color:var(--muted);text-decoration:none;border-bottom:1px dashed rgba(148,163,184,.32);transition:color .2s ease,border-color .2s ease}
.friend-links a:hover{color:#6ec6ff;border-color:#6ec6ff}
.footer-note{
  margin-top:26px;padding-top:22px;border-top:1px dashed rgba(148,163,184,.2);
  font-size:12.5px;line-height:1.9;color:#7286a6;
}
.footer-copy{margin-top:16px;font-size:12.5px;color:#6a7d9c}

/* 响应式 */
@media (max-width:1024px){
  .grid-4,.badge-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-3,.scene-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .download-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .news-layout{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:768px){
  .hero{padding:52px 0 48px}
  .section{padding:52px 0}
  .grid-2,.pain-grid,.compare,.channel-cards,.download-grid,.scene-grid,.grid-3,.grid-4,.badge-grid,.steps{grid-template-columns:minmax(0,1fr)}
  .hero-stats{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
  .hero-stat{padding:14px 10px}
  .hero-stat strong{font-size:18px}
  .hero-stat span{font-size:11.5px}
  .download-band{padding:26px 20px}
  .join-band{padding:34px 20px}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .header-cta{padding:9px 16px;font-size:13px}
  .brand-text em{display:none}
}
@media (max-width:520px){
  .site-container{padding:0 16px}
  .hero-inner{padding:0 16px}
  .hero h1{font-size:25px}
  .hero-lead{font-size:14.5px}
  .hero-search{flex-wrap:wrap;border-radius:18px;padding:14px}
  .hero-search input{flex:1 1 100%;padding:4px 0 8px}
  .hero-search button{flex:1 1 100%}
  .hero-stats{grid-template-columns:minmax(0,1fr)}
  .section-head h2{font-size:20px}
  .card,.step,.scene,.comparie-col,.faq-item{padding:18px}
  .pain{padding:18px;gap:12px}
  .join-actions .btn-glow,.join-actions .btn-ghost{width:100%}
}

/* roulang page: article */
:root{
  --bg:#060b18;
  --bg-soft:#0a1225;
  --panel:rgba(255,255,255,.045);
  --panel-strong:rgba(255,255,255,.075);
  --border:rgba(148,163,184,.18);
  --border-strong:rgba(62,166,255,.42);
  --text:#e8eefc;
  --muted:#93a3c0;
  --brand:#3ea6ff;
  --brand-2:#7c5cff;
  --accent:#28e0c8;
  --radius:16px;
  --radius-sm:12px;
  --shadow:0 18px 50px rgba(2,8,24,.62);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
html body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
.site-container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,11,24,.86);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(148,163,184,.14);
}
.header-top{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-top:14px;padding-bottom:14px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;min-width:0}
.brand-mark{
  width:42px;height:42px;flex:0 0 42px;border-radius:13px;
  display:flex;align-items:center;justify-content:center;
  font-size:19px;font-weight:800;color:#fff;
  background:linear-gradient(135deg,#3ea6ff,#7c5cff);
  box-shadow:0 10px 26px rgba(62,166,255,.38);
}
.brand-text{display:flex;flex-direction:column;min-width:0}
.brand-text strong{font-size:18px;font-weight:800;letter-spacing:.5px;color:#fff;line-height:1.3}
.brand-text em{font-style:normal;font-size:12.5px;color:var(--muted);line-height:1.5;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.header-cta{
  flex:0 0 auto;display:inline-flex;align-items:center;gap:8px;
  padding:10px 20px;border-radius:999px;text-decoration:none;
  font-size:14px;font-weight:600;color:#fff;white-space:nowrap;
  background:linear-gradient(135deg,#3ea6ff,#7c5cff);
  box-shadow:0 10px 26px rgba(62,166,255,.34);
  transition:transform .25s ease,box-shadow .25s ease;
}
.header-cta:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(62,166,255,.5)}
.header-cta:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.header-channels{border-top:1px solid rgba(148,163,184,.1)}
.channel-row{display:flex;align-items:center;gap:8px;overflow-x:auto;padding-top:9px;padding-bottom:11px;scrollbar-width:none}
.channel-row::-webkit-scrollbar{display:none}
.channel-link{
  flex:0 0 auto;padding:8px 16px;border-radius:999px;
  font-size:14px;color:#a9bada;white-space:nowrap;
  border:1px solid transparent;
  transition:color .2s ease,background .2s ease,border-color .2s ease;
}
.channel-link:hover{color:#fff;background:rgba(62,166,255,.12);border-color:var(--border)}
.channel-link:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.channel-link.active{
  color:#fff;border-color:var(--border-strong);
  background:linear-gradient(135deg,rgba(62,166,255,.28),rgba(124,92,255,.22));
  box-shadow:0 8px 20px rgba(62,166,255,.2);
}

/* 文章首屏 */
.article-hero{position:relative;overflow:hidden;padding:46px 0 40px}
.article-hero::before{
  content:"";position:absolute;left:0;right:0;top:-50%;height:560px;pointer-events:none;
  background:
    radial-gradient(600px 300px at 30% 0%,rgba(62,166,255,.28),transparent 72%),
    radial-gradient(520px 260px at 80% 18%,rgba(124,92,255,.24),transparent 74%),
    radial-gradient(420px 220px at 60% 70%,rgba(40,224,200,.1),transparent 72%);
  filter:blur(8px);
}
.article-hero-inner{position:relative;z-index:1}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:#8091b0;margin-bottom:20px}
.breadcrumb a{color:#9fb4d6;transition:color .2s ease}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:#4a5b78}
.breadcrumb .current{color:#c8d5ea}
.hero-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,340px);gap:28px;align-items:start}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;border-radius:999px;font-size:13px;color:#bcd2f5;
  background:rgba(62,166,255,.12);border:1px solid rgba(62,166,255,.32);
}
.hero-eyebrow i{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 12px var(--accent)}
.article-title{
  margin:18px 0 0;font-size:clamp(24px,3.4vw,36px);line-height:1.4;
  font-weight:800;letter-spacing:.3px;color:#fff;
  overflow-wrap:break-word;word-break:break-word;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;margin-top:18px;font-size:13.5px;color:#8fa1bf}
.meta-tag{
  display:inline-flex;align-items:center;gap:6px;padding:5px 13px;border-radius:999px;
  font-size:12.5px;color:#bfe0ff;background:rgba(62,166,255,.13);
  border:1px solid rgba(62,166,255,.3);
}
.hero-side{
  padding:22px;border-radius:var(--radius);
  background:var(--panel-strong);border:1px solid var(--border);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow);min-width:0;
}
.hero-side h2{font-size:15px;color:#fff;font-weight:700;margin-bottom:14px;letter-spacing:.3px}
.quick-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:12px}
.quick-list li{display:flex;gap:10px;font-size:13.5px;line-height:1.8;color:#a9bada;min-width:0}
.quick-list li span.dot{
  flex:0 0 6px;width:6px;height:6px;margin-top:8px;border-radius:50%;
  background:linear-gradient(135deg,#3ea6ff,#28e0c8);
}
.quick-list li b{color:#e6f0ff;font-weight:600}

/* 通用板块 */
.section{padding:56px 0;position:relative}
.section--alt{
  background:linear-gradient(180deg,rgba(10,18,37,.92),rgba(6,11,24,.35));
  border-top:1px solid rgba(148,163,184,.1);
  border-bottom:1px solid rgba(148,163,184,.1);
}
.section-head{max-width:860px;margin:0 0 30px}
.section-head h2{
  margin:0;font-size:clamp(20px,2.4vw,27px);line-height:1.45;
  font-weight:800;color:#fff;letter-spacing:.3px;
}
.section-head h2 .hl{color:#6ec6ff}
.sec-lead{margin:12px 0 0;font-size:14.5px;line-height:1.95;color:var(--muted)}

/* 文章主体布局 */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,326px);gap:28px;align-items:start}
.article-card{
  min-width:0;padding:30px;border-radius:var(--radius);
  background:var(--panel);border:1px solid var(--border);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  box-shadow:var(--shadow);
}
.article-body{font-size:16px;line-height:1.95;color:#c6d3e7;overflow-wrap:break-word;min-width:0}
.article-body p{margin:0 0 16px}
.article-body h2{
  position:relative;margin:32px 0 14px;padding-left:14px;
  font-size:20px;line-height:1.55;color:#fff;font-weight:800;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:7px;bottom:7px;width:4px;border-radius:3px;
  background:linear-gradient(180deg,#3ea6ff,#7c5cff);
}
.article-body h3{margin:24px 0 10px;font-size:17px;line-height:1.6;color:#eaf2ff;font-weight:700}
.article-body h4{margin:18px 0 8px;font-size:15.5px;color:#dce8fa;font-weight:700}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:22px}
.article-body li{margin:7px 0}
.article-body a{color:#6ec6ff;text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:#9ad8ff}
.article-body strong{color:#fff}
.article-body blockquote{
  margin:20px 0;padding:14px 18px;border-radius:0 12px 12px 0;
  border-left:3px solid var(--brand);background:rgba(62,166,255,.08);color:#b9cae4;
}
.article-body img{border-radius:12px;margin:18px auto;height:auto}
.article-body table{width:100%;border-collapse:collapse;margin:18px 0;font-size:14.5px}
.article-body th,.article-body td{border:1px solid var(--border);padding:10px 12px;text-align:left;vertical-align:top}
.article-body th{background:rgba(62,166,255,.1);color:#fff;font-weight:700}
.article-body code{background:rgba(255,255,255,.08);padding:2px 6px;border-radius:6px;font-size:14px}
.article-empty{
  padding:34px 24px;border-radius:var(--radius-sm);text-align:center;
  background:rgba(255,255,255,.035);border:1px dashed var(--border);
}
.article-empty p{margin:0 0 16px;color:#a9bada;font-size:15px}
.article-empty .btn-ghost{display:inline-flex}

/* 侧栏 */
.article-side{display:flex;flex-direction:column;gap:18px;min-width:0;position:sticky;top:96px}
.side-card{
  min-width:0;padding:22px;border-radius:var(--radius);
  background:var(--panel);border:1px solid var(--border);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
}
.side-card h3{font-size:15px;color:#fff;font-weight:700;margin-bottom:12px}
.side-card p{font-size:13.5px;line-height:1.9;color:#9fb0cc;margin:0}
.check-list{list-style:none;padding:0;margin:0;counter-reset:chk}
.check-list li{
  counter-increment:chk;position:relative;padding-left:30px;margin-bottom:12px;
  font-size:13.5px;line-height:1.8;color:#a9bada;
}
.check-list li:last-child{margin-bottom:0}
.check-list li::before{
  content:counter(chk);position:absolute;left:0;top:2px;width:20px;height:20px;
  display:flex;align-items:center;justify-content:center;border-radius:6px;
  font-size:11.5px;font-weight:700;color:#9fd4ff;
  background:rgba(62,166,255,.16);border:1px solid rgba(62,166,255,.32);
}
.side-card--warn{border-color:rgba(255,176,84,.32);background:rgba(255,176,84,.07)}
.side-card--warn h3{color:#ffcf9a}

/* 指标看板 */
.metric-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.metric-card{
  min-width:0;padding:22px;border-radius:var(--radius);
  background:linear-gradient(160deg,rgba(255,255,255,.075),rgba(255,255,255,.028));
  border:1px solid var(--border);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.metric-card:hover{transform:translateY(-4px);border-color:var(--border-strong);box-shadow:0 18px 40px rgba(2,8,24,.6)}
.metric-label{font-size:12.5px;letter-spacing:.6px;color:#8ea4c4;text-transform:none}
.metric-name{margin:8px 0 10px;font-size:17px;font-weight:800;color:#fff;line-height:1.4}
.metric-desc{font-size:13px;line-height:1.85;color:#9fb0cc;margin:0}
.metric-unit{
  display:inline-flex;margin-top:14px;padding:4px 11px;border-radius:999px;
  font-size:11.5px;color:#9fd4ff;background:rgba(62,166,255,.14);
  border:1px solid rgba(62,166,255,.28);
}

/* 演算对比 */
.calc-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.calc-card{
  min-width:0;padding:24px;border-radius:var(--radius);
  background:var(--panel);border:1px solid var(--border);
  display:flex;flex-direction:column;
}
.calc-card.is-risk{border-color:rgba(255,120,120,.34);background:rgba(255,90,90,.07)}
.calc-card.is-mid{border-color:rgba(255,196,96,.3);background:rgba(255,196,96,.06)}
.calc-head{display:flex;align-items:baseline;justify-content:space-between;gap:10px;flex-wrap:wrap}
.calc-head h3{font-size:16.5px;color:#fff;font-weight:800;margin:0}
.calc-badge{font-size:11.5px;padding:3px 10px;border-radius:999px;color:#bfe0ff;background:rgba(62,166,255,.15);border:1px solid rgba(62,166,255,.28)}
.calc-card.is-risk .calc-badge{color:#ffc2c2;background:rgba(255,90,90,.16);border-color:rgba(255,90,90,.32)}
.calc-card.is-mid .calc-badge{color:#ffe0ab;background:rgba(255,196,96,.14);border-color:rgba(255,196,96,.3)}
.calc-figure{
  margin:16px 0 14px;padding:14px 16px;border-radius:var(--radius-sm);
  background:rgba(6,11,24,.55);border:1px solid rgba(148,163,184,.14);
}
.calc-figure strong{display:block;font-size:26px;font-weight:800;color:#fff;line-height:1.2}
.calc-figure span{font-size:12.5px;color:#8ea4c4}
.calc-list{list-style:none;margin:0 0 14px;padding:0;display:flex;flex-direction:column;gap:9px}
.calc-list li{display:flex;justify-content:space-between;gap:12px;font-size:13.5px;color:#a9bada}
.calc-list li b{color:#fff;font-weight:700;white-space:nowrap}
.calc-note{margin-top:auto;font-size:12.5px;line-height:1.8;color:#8fa1bf}

/* 流程时间线 */
.flow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;position:relative}
.flow-step{
  min-width:0;padding:22px;border-radius:var(--radius);
  background:var(--panel);border:1px solid var(--border);
  position:relative;transition:border-color .25s ease,transform .25s ease;
}
.flow-step:hover{border-color:var(--border-strong);transform:translateY(-3px)}
.flow-index{
  display:inline-flex;align-items:center;justify-content:center;
  width:30px;height:30px;border-radius:9px;font-size:13px;font-weight:800;color:#fff;
  background:linear-gradient(135deg,#3ea6ff,#7c5cff);
  box-shadow:0 8px 20px rgba(62,166,255,.32);
}
.flow-step h3{margin:14px 0 8px;font-size:15.5px;color:#fff;font-weight:700;line-height:1.5}
.flow-step p{margin:0;font-size:13px;line-height:1.85;color:#9fb0cc}

/* 成本要点 */
.cost-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.cost-item{
  min-width:0;display:flex;gap:14px;padding:20px;border-radius:var(--radius);
  background:var(--panel);border:1px solid var(--border);
}
.cost-icon{
  flex:0 0 40px;width:40px;height:40px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;font-size:16px;
  color:#9fd4ff;background:rgba(62,166,255,.14);border:1px solid rgba(62,166,255,.28);
}
.cost-item h3{font-size:15px;color:#fff;font-weight:700;margin:0 0 6px}
.cost-item p{margin:0;font-size:13px;line-height:1.85;color:#9fb0cc}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:960px}
.faq-item{
  border-radius:var(--radius-sm);overflow:hidden;
  background:var(--panel);border:1px solid var(--border);
  transition:border-color .25s ease,background .25s ease;
}
.faq-item[open]{border-color:var(--border-strong);background:rgba(62,166,255,.06)}
.faq-item summary{
  cursor:pointer;list-style:none;padding:16px 20px;font-size:15px;font-weight:600;color:#e8eefc;
  display:flex;align-items:center;justify-content:space-between;gap:14px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}
.faq-item summary::after{
  content:"+";flex:0 0 auto;font-size:20px;line-height:1;color:#6ec6ff;font-weight:400;
  transition:transform .25s ease;
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-answer{padding:0 20px 18px;font-size:14px;line-height:1.95;color:#a9bada}

/* 延伸阅读 */
.readmore{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;
  padding:26px;border-radius:var(--radius);
  background:linear-gradient(135deg,rgba(62,166,255,.14),rgba(124,92,255,.12));
  border:1px solid var(--border-strong);
}
.readmore-text{min-width:0}
.readmore-text h2{font-size:18px;color:#fff;font-weight:800;margin:0 0 8px}
.readmore-text p{margin:0;font-size:13.5px;line-height:1.9;color:#a9bada;max-width:640px}

/* 下载条 */
.download-bar{
  position:relative;overflow:hidden;
  padding:34px;border-radius:22px;
  background:
    radial-gradient(560px 240px at 12% 0%,rgba(62,166,255,.28),transparent 70%),
    radial-gradient(520px 240px at 92% 100%,rgba(124,92,255,.26),transparent 72%),
    rgba(255,255,255,.05);
  border:1px solid var(--border-strong);
  box-shadow:var(--shadow);
}
.download-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:24px}
.download-head h2{font-size:clamp(19px,2.3vw,25px);color:#fff;font-weight:800;margin:0}
.download-head p{margin:8px 0 0;font-size:13.5px;line-height:1.9;color:#a9bada;max-width:640px}
.download-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.dl-btn{
  min-width:0;display:flex;align-items:center;gap:14px;
  padding:16px 20px;border-radius:14px;text-decoration:none;
  background:rgba(255,255,255,.06);border:1px solid var(--border);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease,background .25s ease;
}
.dl-btn:hover{
  transform:translateY(-3px);background:rgba(62,166,255,.14);
  border-color:var(--border-strong);box-shadow:0 16px 36px rgba(62,166,255,.28);
}
.dl-btn:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.dl-icon{
  flex:0 0 40px;width:40px;height:40px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;font-size:17px;color:#fff;
  background:linear-gradient(135deg,#3ea6ff,#7c5cff);
  box-shadow:0 10px 24px rgba(62,166,255,.34);
}
.dl-text{min-width:0;display:flex;flex-direction:column}
.dl-text strong{font-size:15px;color:#fff;font-weight:700;line-height:1.4}
.dl-text span{font-size:12px;color:#9fb0cc;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 24px;border-radius:999px;text-decoration:none;
  font-size:14px;font-weight:600;color:#dbeafd;
  border:1px solid var(--border-strong);background:rgba(62,166,255,.12);
  transition:background .25s ease,color .25s ease,transform .25s ease;
}
.btn-ghost:hover{background:rgba(62,166,255,.24);color:#fff;transform:translateY(-2px)}
.btn-ghost:focus-visible{outline:2px solid var(--accent);outline-offset:3px}

/* 页脚 */
.site-footer{
  border-top:1px solid rgba(148,163,184,.14);
  background:linear-gradient(180deg,rgba(10,18,37,.92),rgba(6,11,24,1));
  padding:56px 0 34px;margin-top:0;
}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(0,1fr) minmax(0,1fr);gap:32px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.footer-brand strong{font-size:17px;color:#fff;font-weight:800;letter-spacing:.4px}
.footer-desc{margin:0;font-size:13.5px;line-height:1.9;color:var(--muted);max-width:520px}
.footer-col h3{font-size:14px;color:#fff;margin:0 0 12px;font-weight:700;letter-spacing:.3px}
.footer-col a{display:block;font-size:13.5px;color:var(--muted);padding:5px 0;transition:color .2s ease,transform .2s ease}
.footer-col a:hover{color:var(--brand);transform:translateX(3px)}
.footer-friend{margin-top:34px;padding-top:22px;border-top:1px solid rgba(148,163,184,.12)}
.footer-friend h3{font-size:14px;margin:0 0 12px;color:#fff;font-weight:700}
.friend-links{display:flex;flex-wrap:wrap;gap:10px}
.friend-links a{
  font-size:13px;color:var(--muted);padding:5px 12px;border-radius:999px;
  border:1px solid var(--border);background:rgba(255,255,255,.03);
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.friend-links a:hover{color:#fff;border-color:var(--border-strong);background:rgba(62,166,255,.12)}
.footer-note{
  margin:26px 0 0;padding:16px 18px;border-radius:12px;
  font-size:12.5px;line-height:1.9;color:#8294b2;
  background:rgba(255,255,255,.03);border:1px solid var(--border);
}
.footer-copy{margin:14px 0 0;font-size:12.5px;color:#6b7a96}

@media (max-width:1024px){
  .hero-grid{grid-template-columns:minmax(0,1fr)}
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .article-side{position:static;flex-direction:row;flex-wrap:wrap}
  .article-side .side-card{flex:1 1 300px}
  .metric-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .calc-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .flow{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid > div:first-child{grid-column:1 / -1}
}
@media (max-width:768px){
  .header-top{padding-top:12px;padding-bottom:12px}
  .brand-text em{display:none}
  .header-cta{padding:9px 15px;font-size:13px}
  .article-hero{padding:34px 0 30px}
  .section{padding:44px 0}
  .article-card{padding:22px}
  .calc-grid{grid-template-columns:minmax(0,1fr)}
  .cost-grid{grid-template-columns:minmax(0,1fr)}
  .download-grid{grid-template-columns:minmax(0,1fr)}
  .download-bar{padding:24px}
  .readmore{padding:22px}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:24px}
}
@media (max-width:520px){
  .site-container{padding:0 15px}
  .metric-grid{grid-template-columns:minmax(0,1fr)}
  .flow{grid-template-columns:minmax(0,1fr)}
  .brand-mark{width:38px;height:38px;flex-basis:38px;font-size:17px;border-radius:11px}
  .brand-text strong{font-size:16px}
  .article-title{font-size:22px}
  .article-card{padding:18px}
  .article-body{font-size:15px}
  .article-body h2{font-size:18px}
  .dl-btn{padding:14px 16px}
  .header-cta{display:none}
}

/* roulang page: category1 */
:root{
  --bg:#060b18;
  --bg-soft:#0a1225;
  --panel:rgba(255,255,255,.045);
  --panel-strong:rgba(255,255,255,.075);
  --border:rgba(148,163,184,.18);
  --border-strong:rgba(62,166,255,.42);
  --text:#e8eefc;
  --muted:#93a3c0;
  --brand:#3ea6ff;
  --brand-2:#7c5cff;
  --accent:#28e0c8;
  --danger:#ff6b8a;
  --radius:16px;
  --radius-sm:12px;
  --shadow:0 18px 50px rgba(2,8,24,.62);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body.site-body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
button,input,textarea,select{font-family:inherit;font-size:inherit}
.site-container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,11,24,.86);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(148,163,184,.14);
}
.header-top{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-top:14px;padding-bottom:14px}
.brand{display:flex;align-items:center;gap:12px;min-width:0}
.brand-mark{
  width:42px;height:42px;flex:0 0 42px;border-radius:13px;
  display:flex;align-items:center;justify-content:center;
  font-size:19px;font-weight:800;color:#fff;
  background:linear-gradient(135deg,#3ea6ff,#7c5cff);
  box-shadow:0 10px 26px rgba(62,166,255,.38);
}
.brand-text{display:flex;flex-direction:column;min-width:0}
.brand-text strong{font-size:18px;font-weight:800;letter-spacing:.5px;color:#fff;line-height:1.3}
.brand-text em{font-style:normal;font-size:12.5px;color:var(--muted);line-height:1.5;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.header-cta{
  flex:0 0 auto;display:inline-flex;align-items:center;gap:8px;
  padding:10px 20px;border-radius:999px;
  font-size:14px;font-weight:600;color:#fff;
  background:linear-gradient(135deg,#3ea6ff,#7c5cff);
  box-shadow:0 10px 26px rgba(62,166,255,.34);
  transition:transform .25s ease,box-shadow .25s ease;
}
.header-cta:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(62,166,255,.5)}
.header-cta:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.header-channels{border-top:1px solid rgba(148,163,184,.1)}
.channel-row{display:flex;align-items:center;gap:8px;overflow-x:auto;padding-top:9px;padding-bottom:11px;scrollbar-width:none}
.channel-row::-webkit-scrollbar{display:none}
.channel-link{
  flex:0 0 auto;white-space:nowrap;
  padding:8px 16px;border-radius:999px;
  font-size:14px;color:#a9bada;
  background:rgba(255,255,255,.03);
  border:1px solid transparent;
  transition:color .2s ease,background .2s ease,border-color .2s ease;
}
.channel-link:hover{color:#fff;background:rgba(62,166,255,.12);border-color:var(--border-strong)}
.channel-link:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.channel-link.active{
  color:#fff;
  background:rgba(62,166,255,.16);
  border-color:rgba(62,166,255,.42);
  box-shadow:0 0 20px rgba(62,166,255,.18);
}

/* ===== 分类页首屏 ===== */
.cat-hero{position:relative;overflow:hidden;padding:58px 0 54px}
.cat-hero::before{
  content:"";position:absolute;left:0;right:0;top:-46%;height:660px;pointer-events:none;
  background:
    radial-gradient(620px 300px at 30% 0%,rgba(62,166,255,.28),transparent 72%),
    radial-gradient(520px 260px at 80% 18%,rgba(124,92,255,.24),transparent 74%),
    radial-gradient(460px 220px at 12% 32%,rgba(40,224,200,.12),transparent 72%);
  filter:blur(6px);
}
.hero-grid{
  position:relative;z-index:1;
  display:grid;
  grid-template-columns:minmax(0,1.12fr) minmax(0,.88fr);
  gap:40px;
  align-items:start;
}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;border-radius:999px;font-size:13px;color:#bcd2f5;
  background:rgba(62,166,255,.12);border:1px solid rgba(62,166,255,.32);
}
.hero-badge i{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 12px var(--accent)}
.hero-copy h1{
  margin:20px 0 0;
  font-size:clamp(26px,3.6vw,40px);
  line-height:1.32;font-weight:800;letter-spacing:.3px;color:#fff;
  overflow-wrap:break-word;
}
.hero-copy h1 span{
  background:linear-gradient(120deg,#5ec2ff,#9b8bff 60%,#28e0c8);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-copy p.hero-lead{
  margin:20px 0 0;font-size:15.5px;line-height:1.95;color:#a9bada;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.btn-primary,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border-radius:999px;
  font-size:14.5px;font-weight:600;
  border:1px solid transparent;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease;
}
.btn-primary{color:#fff;background:linear-gradient(135deg,#3ea6ff,#7c5cff);box-shadow:0 10px 26px rgba(62,166,255,.38)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(62,166,255,.55)}
.btn-ghost{color:#cfe0fb;background:rgba(255,255,255,.045);border-color:var(--border)}
.btn-ghost:hover{color:#fff;background:rgba(62,166,255,.14);border-color:var(--border-strong);transform:translateY(-2px)}
.btn-primary:focus-visible,.btn-ghost:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.hero-meta{display:flex;flex-wrap:wrap;gap:9px;margin-top:24px}
.hero-meta span{
  padding:6px 14px;border-radius:999px;font-size:12.5px;color:#9db0d0;
  background:rgba(255,255,255,.035);border:1px solid var(--border);
}

/* 首屏右侧参数卡 */
.hero-panel{
  position:relative;min-width:0;
  padding:24px 24px 20px;border-radius:20px;
  background:linear-gradient(160deg,rgba(62,166,255,.14),rgba(124,92,255,.08) 55%,rgba(255,255,255,.03));
  border:1px solid var(--border-strong);
  box-shadow:var(--shadow);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
}
.hero-panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:14px;border-bottom:1px solid rgba(148,163,184,.16)}
.hero-panel-head h2{margin:0;font-size:15px;font-weight:700;color:#fff;letter-spacing:.4px}
.hero-panel-head em{font-style:normal;font-size:12px;color:var(--accent)}
.param-list{list-style:none;margin:0;padding:6px 0 0;display:grid;gap:2px;min-width:0}
.param-item{padding:13px 0;border-bottom:1px dashed rgba(148,163,184,.16);min-width:0}
.param-item:last-child{border-bottom:0}
.param-item strong{display:block;font-size:14.5px;font-weight:700;color:#dcebff;line-height:1.5}
.param-item span{display:block;margin-top:3px;font-size:13px;color:var(--muted);line-height:1.7}

/* ===== 通用板块 ===== */
.section{padding:66px 0;position:relative}
.section--alt{
  background:linear-gradient(180deg,rgba(10,18,37,.92),rgba(6,11,24,.35));
  border-top:1px solid rgba(148,163,184,.1);
  border-bottom:1px solid rgba(148,163,184,.1);
}
.section-head{max-width:820px;margin:0 auto 36px}
.section-head h2{
  margin:0;font-size:clamp(21px,2.6vw,30px);line-height:1.4;
  font-weight:800;color:#fff;letter-spacing:.3px;
}
.section-head h2 .hl{color:#6ec6ff}
.section-head .sec-lead{
  margin:14px 0 0;font-size:15px;line-height:1.95;color:var(--muted);
}

/* 指标看板 */
.metric-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.metric-card{
  min-width:0;padding:22px;border-radius:var(--radius);
  background:var(--panel);border:1px solid var(--border);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease,background .25s ease;
}
.metric-card:hover{transform:translateY(-4px);border-color:var(--border-strong);background:var(--panel-strong);box-shadow:0 18px 40px rgba(2,8,24,.55)}
.metric-no{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:11px;
  font-size:14px;font-weight:800;color:#bfe1ff;
  background:rgba(62,166,255,.14);border:1px solid rgba(62,166,255,.28);
}
.metric-card h3{margin:14px 0 0;font-size:16.5px;font-weight:700;color:#e8f2ff;line-height:1.5}
.metric-card p{margin:8px 0 0;font-size:14px;line-height:1.85;color:var(--muted)}
.metric-tag{
  display:inline-block;margin-top:14px;padding:4px 12px;border-radius:999px;
  font-size:12px;color:#8fe6d8;
  background:rgba(40,224,200,.1);border:1px solid rgba(40,224,200,.26);
}

/* 风险操作矩阵 */
.risk-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.risk-card{
  min-width:0;display:flex;gap:16px;
  padding:22px;border-radius:var(--radius);
  background:linear-gradient(150deg,rgba(255,107,138,.09),rgba(255,255,255,.035));
  border:1px solid rgba(255,107,138,.24);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.risk-card:hover{transform:translateY(-3px);border-color:rgba(255,107,138,.48);box-shadow:0 18px 40px rgba(2,8,24,.5)}
.risk-ico{
  flex:0 0 38px;width:38px;height:38px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:800;color:#ffd2dc;
  background:rgba(255,107,138,.16);border:1px solid rgba(255,107,138,.34);
}
.risk-body{min-width:0}
.risk-body h3{margin:0;font-size:16px;font-weight:700;color:#ffe9ee;line-height:1.5}
.risk-body p{margin:7px 0 0;font-size:14px;line-height:1.85;color:#b9c6de}

/* 情景对比 */
.compare-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.compare-card{
  min-width:0;padding:24px;border-radius:var(--radius);
  background:var(--panel);border:1px solid var(--border);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.compare-card:hover{transform:translateY(-4px);border-color:var(--border-strong);box-shadow:0 18px 40px rgba(2,8,24,.5)}
.compare-card.is-danger{background:linear-gradient(160deg,rgba(255,107,138,.12),rgba(255,255,255,.03));border-color:rgba(255,107,138,.3)}
.cmp-label{font-size:13px;color:#9db0d0;letter-spacing:.4px}
.cmp-num{margin-top:8px;font-size:34px;font-weight:800;line-height:1.2;color:#fff}
.compare-card.is-danger .cmp-num{color:#ffb0c1}
.cmp-sub{margin-top:4px;font-size:13px;color:var(--muted)}
.cmp-list{list-style:none;margin:16px 0 0;padding:16px 0 0;border-top:1px dashed rgba(148,163,184,.2);display:grid;gap:8px}
.cmp-list li{font-size:13.5px;line-height:1.75;color:#a9bada}
.cmp-list li::before{content:"·";margin-right:8px;color:var(--brand)}
.compare-note{margin:22px 0 0;font-size:13px;line-height:1.9;color:#7f8fae}

/* 认知进阶时间线 */
.timeline{display:grid;gap:14px}
.tl-item{
  position:relative;min-width:0;
  padding:20px 24px 20px 60px;border-radius:var(--radius);
  background:var(--panel);border:1px solid var(--border);
  transition:border-color .25s ease,background .25s ease;
}
.tl-item:hover{border-color:var(--border-strong);background:var(--panel-strong)}
.tl-item::before{
  content:"";position:absolute;left:26px;top:26px;width:10px;height:10px;border-radius:50%;
  background:var(--accent);box-shadow:0 0 0 6px rgba(40,224,200,.12);
}
.tl-item::after{
  content:"";position:absolute;left:30px;top:42px;bottom:-14px;width:2px;
  background:linear-gradient(180deg,rgba(40,224,200,.42),rgba(40,224,200,0));
}
.tl-item:last-child::after{display:none}
.tl-item h3{margin:0;font-size:16px;font-weight:700;color:#e8f2ff;line-height:1.5}
.tl-item p{margin:6px 0 0;font-size:14px;line-height:1.85;color:var(--muted)}

/* 资讯列表 */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.news-card{
  min-width:0;display:flex;flex-direction:column;
  padding:22px;border-radius:var(--radius);
  background:var(--panel);border:1px solid var(--border);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease,background .25s ease;
}
.news-card:hover{transform:translateY(-4px);border-color:var(--border-strong);background:var(--panel-strong);box-shadow:0 18px 40px rgba(2,8,24,.55)}
.news-meta{display:flex;flex-wrap:wrap;gap:10px;font-size:12px;color:#8ba0c2}
.news-meta span{padding:3px 10px;border-radius:999px;background:rgba(62,166,255,.1);border:1px solid rgba(62,166,255,.22)}
.news-card h3{margin:12px 0 0;font-size:16px;font-weight:700;line-height:1.6;color:#eaf3ff;overflow-wrap:break-word}
.news-card h3 a{transition:color .2s ease}
.news-card h3 a:hover{color:#7fc7ff}
.news-card p{margin:9px 0 0;font-size:13.5px;line-height:1.85;color:var(--muted)}
.news-more{margin-top:16px;font-size:13px;font-weight:600;color:#7fc7ff}
.news-empty{
  padding:34px 24px;border-radius:var(--radius);text-align:center;
  font-size:14px;color:var(--muted);
  background:var(--panel);border:1px dashed var(--border);
}

/* 规则确认清单 */
.assure-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.assure-card{
  min-width:0;padding:22px;border-radius:var(--radius);
  background:linear-gradient(150deg,rgba(40,224,200,.08),rgba(255,255,255,.03));
  border:1px solid rgba(40,224,200,.24);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.assure-card:hover{transform:translateY(-3px);border-color:rgba(40,224,200,.46);box-shadow:0 18px 40px rgba(2,8,24,.5)}
.assure-card h3{margin:0;font-size:16px;font-weight:700;color:#dff9f4;line-height:1.5}
.assure-card p{margin:8px 0 0;font-size:14px;line-height:1.85;color:#a9bada}

/* 误解对照 */
.myth-list{display:grid;gap:14px}
.myth-item{
  min-width:0;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.25fr);gap:20px;
  padding:20px 22px;border-radius:var(--radius);
  background:var(--panel);border:1px solid var(--border);
}
.myth-item .myth-wrong{font-size:14.5px;font-weight:700;color:#ffb0c1;line-height:1.7}
.myth-item .myth-wrong::before{content:"误解";display:block;font-size:11.5px;font-weight:600;color:#8a6b74;margin-bottom:4px;letter-spacing:1px}
.myth-item .myth-right{font-size:14px;color:#b9c6de;line-height:1.85}
.myth-item .myth-right::before{content:"实际";display:block;font-size:11.5px;font-weight:600;color:#4a7d76;margin-bottom:4px;letter-spacing:1px}

/* FAQ */
.faq-list{display:grid;gap:12px;max-width:960px;margin:0 auto}
.faq-item{
  min-width:0;border-radius:var(--radius);
  background:var(--panel);border:1px solid var(--border);
  padding:18px 22px;
  transition:border-color .25s ease,background .25s ease;
}
.faq-item:hover{border-color:var(--border-strong)}
.faq-item[open]{background:var(--panel-strong);border-color:var(--border-strong)}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  font-size:15.5px;font-weight:700;color:#eaf3ff;line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";flex:0 0 auto;font-size:18px;font-weight:700;color:#6ec6ff;line-height:1.3;
  transition:transform .2s ease;
}
.faq-item[open] summary::after{content:"−"}
.faq-item summary:focus-visible{outline:2px solid var(--accent);outline-offset:4px;border-radius:6px}
.faq-item .faq-answer{margin:12px 0 0;font-size:14px;line-height:1.95;color:var(--muted)}

/* 下载区 */
.download-panel{
  position:relative;min-width:0;overflow:hidden;
  padding:38px 34px;border-radius:22px;
  background:linear-gradient(140deg,rgba(62,166,255,.16),rgba(124,92,255,.12) 55%,rgba(40,224,200,.08));
  border:1px solid var(--border-strong);
  box-shadow:var(--shadow);
}
.download-panel::after{
  content:"";position:absolute;right:-90px;top:-90px;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,rgba(40,224,200,.22),transparent 70%);
  pointer-events:none;
}
.download-panel h2{margin:0;font-size:clamp(20px,2.4vw,27px);font-weight:800;color:#fff;line-height:1.45}
.download-panel p{margin:12px 0 0;font-size:14.5px;line-height:1.9;color:#b6c8e4;max-width:760px}
.download-btns{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;position:relative;z-index:1}
.dl-btn{
  flex:1 1 190px;min-width:0;
  display:flex;align-items:center;gap:12px;
  padding:14px 20px;border-radius:14px;
  background:rgba(6,11,24,.55);border:1px solid var(--border);
  transition:transform .22s ease,border-color .22s ease,background .22s ease,box-shadow .22s ease;
}
.dl-btn:hover{transform:translateY(-3px);border-color:var(--border-strong);background:rgba(62,166,255,.16);box-shadow:0 14px 34px rgba(2,8,24,.5)}
.dl-btn:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.dl-btn span{display:block;min-width:0}
.dl-btn strong{display:block;font-size:14.5px;font-weight:700;color:#fff;line-height:1.4}
.dl-btn em{display:block;font-style:normal;font-size:12px;color:var(--muted);line-height:1.5}
.dl-ico{
  flex:0 0 34px;width:34px;height:34px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:800;color:#bfe1ff;
  background:rgba(62,166,255,.16);border:1px solid rgba(62,166,255,.3);
}

/* 表单 */
.lead-wrap{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.85fr);gap:34px;align-items:start}
.lead-copy h2{margin:0;font-size:clamp(21px,2.6vw,29px);font-weight:800;color:#fff;line-height:1.45}
.lead-copy p{margin:14px 0 0;font-size:14.5px;line-height:1.95;color:var(--muted)}
.lead-points{list-style:none;margin:20px 0 0;padding:0;display:grid;gap:10px}
.lead-points li{position:relative;padding-left:22px;font-size:14px;color:#a9bada;line-height:1.8}
.lead-points li::before{content:"";position:absolute;left:0;top:10px;width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px rgba(40,224,200,.6)}
.lead-form{
  min-width:0;padding:26px;border-radius:var(--radius);
  background:var(--panel);border:1px solid var(--border);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
}
.field{display:block;margin-bottom:16px;min-width:0}
.field span{display:block;margin-bottom:7px;font-size:13px;color:#9db0d0}
.field input,.field textarea{
  width:100%;min-width:0;
  padding:11px 14px;border-radius:11px;
  background:rgba(6,11,24,.6);border:1px solid var(--border);
  color:var(--text);outline:none;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field input::placeholder,.field textarea::placeholder{color:#6f80a0}
.field input:focus,.field textarea:focus{border-color:var(--border-strong);box-shadow:0 0 0 3px rgba(62,166,255,.16)}
.field textarea{resize:vertical;min-height:104px;line-height:1.8}
.lead-form .btn-primary{width:100%;margin-top:4px}
.form-hint{margin:12px 0 0;font-size:12.5px;line-height:1.8;color:#7f8fae}

/* ===== 页脚 ===== */
.site-footer{
  padding:56px 0 34px;
  background:linear-gradient(180deg,rgba(6,11,24,.2),rgba(4,8,18,.96));
  border-top:1px solid rgba(148,163,184,.14);
}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr) minmax(0,1fr);gap:34px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand strong{font-size:16.5px;font-weight:800;color:#fff;letter-spacing:.4px}
.footer-desc{font-size:13.5px;line-height:1.9;color:var(--muted);margin:0;max-width:420px}
.footer-col{min-width:0;display:flex;flex-direction:column;gap:9px}
.footer-col h3{margin:0 0 4px;font-size:14px;font-weight:700;color:#dce9ff}
.footer-col a{font-size:13.5px;color:var(--muted);line-height:1.7;transition:color .2s ease}
.footer-col a:hover{color:#7fc7ff}
.footer-friend{margin-top:34px;padding-top:24px;border-top:1px solid rgba(148,163,184,.14)}
.footer-friend h3{margin:0 0 12px;font-size:14px;font-weight:700;color:#dce9ff}
.friend-links{display:flex;flex-wrap:wrap;gap:10px;min-width:0}
.friend-links a{
  padding:5px 13px;border-radius:999px;font-size:12.5px;color:#9db0d0;
  background:rgba(255,255,255,.04);border:1px solid var(--border);
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.friend-links a:hover{color:#fff;border-color:var(--border-strong);background:rgba(62,166,255,.14)}
.footer-note{
  margin:26px 0 0;padding:16px 18px;border-radius:var(--radius-sm);
  font-size:12.5px;line-height:1.9;color:#8b9cba;
  background:rgba(255,107,138,.06);border:1px solid rgba(255,107,138,.2);
}
.footer-copy{margin:18px 0 0;font-size:12.5px;color:#6f80a0;text-align:center}

/* ===== 响应式 ===== */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:minmax(0,1fr);gap:30px}
  .metric-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .compare-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .lead-wrap{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
}
@media (max-width:768px){
  .section{padding:52px 0}
  .cat-hero{padding:44px 0 42px}
  .risk-grid{grid-template-columns:minmax(0,1fr)}
  .assure-grid{grid-template-columns:minmax(0,1fr)}
  .myth-item{grid-template-columns:minmax(0,1fr);gap:10px}
  .download-panel{padding:30px 22px}
  .brand-text em{display:none}
  .header-cta{padding:9px 16px;font-size:13px}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:26px}
}
@media (max-width:520px){
  .site-container{padding:0 16px}
  .metric-grid{grid-template-columns:minmax(0,1fr)}
  .compare-grid{grid-template-columns:minmax(0,1fr)}
  .news-grid{grid-template-columns:minmax(0,1fr)}
  .hero-actions .btn-primary,.hero-actions .btn-ghost{flex:1 1 100%}
  .download-btns .dl-btn{flex:1 1 100%}
  .cmp-num{font-size:28px}
  .lead-form{padding:20px}
  .hero-panel{padding:20px}
}