/* roulang page: index */
:root{
  --ink:#0A1C26;
  --ink-2:#0E2833;
  --ink-3:#163A48;
  --gold:#C9A45B;
  --gold-2:#E6CE9C;
  --gold-deep:#A8802F;
  --bg:#F5F6F4;
  --bg-muted:#EDF1EF;
  --surface:#FFFFFF;
  --text:#152128;
  --muted:#5E7079;
  --line:#E2E7E4;
  --radius:18px;
  --shadow-sm:0 2px 12px rgba(10,28,38,.06);
  --shadow-md:0 16px 44px rgba(10,28,38,.10);
  --shadow-lg:0 26px 60px rgba(10,28,38,.16);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.78;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color .25s ease;}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
::selection{background:rgba(201,164,91,.28);}

.site-container{max-width:1180px;margin:0 auto;padding:0 24px;width:100%;}
.section{padding:88px 0;}
.section--tight{padding:64px 0;}
.section--muted{background:var(--bg-muted);}
.section--paper{background:var(--surface);}

.section-head{max-width:760px;margin-bottom:44px;}
.section-head--center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:2.4px;font-weight:600;
  color:var(--gold-deep);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--gold);display:inline-block;}
.section-title{
  font-size:clamp(23px,2.8vw,33px);line-height:1.36;font-weight:800;
  color:var(--ink);letter-spacing:.6px;
}
.section-title em{font-style:normal;color:var(--gold-deep);}
.section-desc{margin-top:16px;color:var(--muted);font-size:15.5px;line-height:1.9;}

/* ============ 导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  background:rgba(10,28,38,.26);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(255,255,255,.10);
  transition:background .32s ease,border-color .32s ease,box-shadow .32s ease;
}
.site-header.is-stuck{
  background:rgba(8,22,30,.94);
  border-bottom-color:rgba(201,164,91,.30);
  box-shadow:0 12px 34px rgba(6,18,24,.30);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:22px;height:76px;}
.brand{display:flex;align-items:center;gap:12px;color:#fff;min-width:0;}
.brand-mark{
  width:42px;height:42px;border-radius:13px;flex:0 0 auto;
  background:linear-gradient(140deg,#E2C68C,#B98F45);
  display:grid;place-items:center;font-weight:800;font-size:18px;color:#0A1C26;
  box-shadow:0 8px 22px rgba(201,164,91,.34);
}
.brand-text{min-width:0;}
.brand-name{display:block;font-size:17px;font-weight:800;letter-spacing:1px;white-space:nowrap;}
.brand-sub{display:block;font-size:11px;letter-spacing:2.6px;color:rgba(255,255,255,.58);font-weight:400;margin-top:2px;}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;padding:10px 16px;border-radius:10px;font-size:15px;
  color:rgba(255,255,255,.82);transition:background .25s,color .25s;
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.09);}
.nav-link.is-active{color:var(--gold-2);}
.nav-link.is-active::after{
  content:"";position:absolute;left:16px;right:16px;bottom:5px;height:2px;
  background:var(--gold);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:12px;}
.nav-cta{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 22px;border-radius:11px;font-size:14.5px;font-weight:700;
  background:linear-gradient(135deg,#DCBC7C,#B98F45);color:#10222B;
  box-shadow:0 10px 24px rgba(201,164,91,.28);
  transition:transform .25s ease,box-shadow .25s ease;
}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 16px 30px rgba(201,164,91,.38);}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:11px;border:1px solid rgba(255,255,255,.24);
  background:rgba(255,255,255,.06);color:#fff;font-size:17px;cursor:pointer;
}
.nav-toggle:focus-visible{outline:2px solid var(--gold-2);outline-offset:2px;}
.mobile-nav{display:none;border-top:1px solid rgba(255,255,255,.12);background:rgba(8,22,30,.97);}
.mobile-nav.open{display:block;}
.mobile-nav a{
  display:block;padding:15px 24px;font-size:15.5px;color:rgba(255,255,255,.84);
  border-bottom:1px solid rgba(255,255,255,.07);
}
.mobile-nav a:last-child{border-bottom:none;}
.mobile-nav a:hover{background:rgba(255,255,255,.06);color:#fff;}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  padding:162px 0 92px;min-height:90vh;display:flex;align-items:center;
  background:
    radial-gradient(920px 500px at 78% 16%, rgba(201,164,91,.20), transparent 62%),
    radial-gradient(760px 440px at 10% 86%, rgba(58,132,160,.26), transparent 62%),
    linear-gradient(152deg,#08171F 0%,#0D2833 54%,#071A22 100%);
}
.hero-grid{
  position:absolute;inset:0;pointer-events:none;opacity:.55;
  background-image:
    linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 50% 40%,#000 30%,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 50% 40%,#000 30%,transparent 78%);
}
.hero-glow{
  position:absolute;width:520px;height:520px;border-radius:50%;pointer-events:none;
  background:radial-gradient(circle,rgba(201,164,91,.20),transparent 66%);
  top:-140px;right:-120px;filter:blur(6px);
}
.hero-inner{position:relative;z-index:2;max-width:880px;margin:0 auto;text-align:center;}
.hero-badge{
  display:inline-flex;align-items:center;gap:9px;padding:8px 20px;border-radius:999px;
  border:1px solid rgba(201,164,91,.45);background:rgba(201,164,91,.10);
  color:var(--gold-2);font-size:13px;letter-spacing:1.6px;
}
.hero h1{
  margin:26px 0 22px;color:#fff;font-weight:800;letter-spacing:1px;
  font-size:clamp(28px,4.5vw,52px);line-height:1.26;
}
.hero h1 .accent{color:var(--gold-2);}
.hero-lead{
  max-width:760px;margin:0 auto;color:rgba(255,255,255,.76);
  font-size:16.5px;line-height:2;
}
.hero-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-top:36px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:14px 30px;border-radius:12px;font-size:15px;font-weight:700;
  border:1px solid transparent;cursor:pointer;
  transition:transform .25s ease,box-shadow .25s ease,background .25s ease,color .25s ease,border-color .25s ease;
}
.btn:focus-visible{outline:2px solid var(--gold-2);outline-offset:3px;}
.btn-gold{
  background:linear-gradient(135deg,#DCBC7C,#B98F45);color:#10222B;
  box-shadow:0 14px 30px rgba(201,164,91,.30);
}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 20px 36px rgba(201,164,91,.42);}
.btn-ghost{border-color:rgba(255,255,255,.34);background:rgba(255,255,255,.06);color:#fff;}
.btn-ghost:hover{background:rgba(255,255,255,.14);transform:translateY(-2px);}
.btn-dark{background:var(--ink);color:#fff;box-shadow:var(--shadow-sm);}
.btn-dark:hover{background:var(--ink-3);transform:translateY(-2px);}
.btn-line{border-color:var(--line);background:#fff;color:var(--ink);}
.btn-line:hover{border-color:var(--gold);color:var(--gold-deep);transform:translateY(-2px);}
.hero-play{
  position:relative;margin:46px auto 0;width:84px;height:84px;border-radius:50%;
  border:1px solid rgba(201,164,91,.60);background:rgba(255,255,255,.06);
  color:var(--gold-2);display:grid;place-items:center;font-size:22px;cursor:pointer;
  transition:background .3s,transform .3s;
}
.hero-play::before{content:"";position:absolute;inset:-11px;border-radius:50%;border:1px solid rgba(201,164,91,.22);}
.hero-play:hover{background:rgba(201,164,91,.18);transform:scale(1.06);}
.hero-play:focus-visible{outline:2px solid var(--gold-2);outline-offset:6px;}
.hero-stats{
  position:relative;z-index:2;display:flex;justify-content:center;flex-wrap:wrap;
  gap:28px 56px;margin-top:56px;padding-top:34px;
  border-top:1px solid rgba(255,255,255,.10);
}
.hero-stats .stat{text-align:center;min-width:120px;}
.hero-stats .stat strong{display:block;font-size:26px;color:#fff;font-weight:800;letter-spacing:1px;}
.hero-stats .stat span{display:block;font-size:12.5px;letter-spacing:1.6px;color:rgba(255,255,255,.55);margin-top:4px;}
@keyframes riseIn{from{opacity:0;transform:translateY(20px);}to{opacity:1;transform:none;}}
.hero-badge{animation:riseIn .8s ease both;}
.hero h1{animation:riseIn .8s ease .08s both;}
.hero-lead{animation:riseIn .8s ease .16s both;}
.hero-actions{animation:riseIn .8s ease .24s both;}
.hero-play{animation:riseIn .8s ease .32s both;}

/* ============ 下载区 ============ */
.section--download{
  background:linear-gradient(180deg,#0B1F2A 0%,#10303C 100%);
  color:#fff;padding:76px 0 80px;
}
.download-head{max-width:720px;margin-bottom:40px;}
.download-head .eyebrow{color:var(--gold-2);}
.download-head .eyebrow::before{background:var(--gold-2);}
.download-head h2{color:#fff;font-size:clamp(23px,2.8vw,32px);font-weight:800;line-height:1.36;letter-spacing:.6px;}
.download-head p{color:rgba(255,255,255,.68);font-size:15.5px;line-height:1.95;margin-top:16px;}
.dl-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.dl-card{
  display:flex;flex-direction:column;gap:14px;min-width:0;
  padding:30px 28px;border-radius:var(--radius);
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
  transition:transform .3s ease,border-color .3s ease,background .3s ease,box-shadow .3s ease;
}
.dl-card:hover{transform:translateY(-6px);border-color:rgba(201,164,91,.52);background:rgba(255,255,255,.10);box-shadow:0 22px 44px rgba(4,14,20,.42);}
.dl-icon{
  width:52px;height:52px;border-radius:14px;display:grid;place-items:center;
  background:rgba(201,164,91,.16);color:var(--gold-2);font-size:21px;
}
.dl-card h3{font-size:18.5px;font-weight:700;color:#fff;letter-spacing:.5px;}
.dl-card p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);min-height:52px;}
.dl-btn{
  margin-top:auto;display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 18px;border-radius:11px;font-size:14.5px;font-weight:700;
  background:linear-gradient(135deg,#DCBC7C,#B98F45);color:#10222B;
  transition:transform .25s ease,box-shadow .25s ease;
}
.dl-btn:hover{transform:translateY(-2px);box-shadow:0 16px 30px rgba(201,164,91,.34);}
.dl-btn:focus-visible{outline:2px solid var(--gold-2);outline-offset:3px;}
.download-note{
  margin-top:28px;display:flex;align-items:flex-start;gap:12px;
  font-size:13.5px;color:rgba(255,255,255,.58);line-height:1.9;
  padding:16px 20px;border-radius:12px;border:1px dashed rgba(255,255,255,.16);
  background:rgba(255,255,255,.03);
}
.download-note i{color:var(--gold-2);margin-top:4px;}

/* ============ 通用卡片/网格 ============ */
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
.grid-2>*,.grid-3>*,.grid-4>*{min-width:0;}
.site-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 26px;box-shadow:var(--shadow-sm);min-width:0;
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.site-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);border-color:rgba(201,164,91,.42);}
.card-icon{
  width:50px;height:50px;border-radius:14px;display:grid;place-items:center;
  background:rgba(201,164,91,.13);color:var(--gold-deep);font-size:20px;margin-bottom:18px;
}
.site-card h3{font-size:18px;font-weight:700;color:var(--ink);margin-bottom:10px;letter-spacing:.4px;}
.site-card p{font-size:14.6px;line-height:1.9;color:var(--muted);}
.card-tag{
  display:inline-block;padding:4px 12px;border-radius:999px;font-size:12px;
  background:rgba(201,164,91,.14);color:var(--gold-deep);letter-spacing:1px;margin-bottom:14px;
}

/* ============ 适用人群 / 对比 ============ */
.fit-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.fit-panel{
  border-radius:var(--radius);padding:30px 28px;border:1px solid var(--line);
  background:var(--surface);box-shadow:var(--shadow-sm);min-width:0;
}
.fit-panel--yes{border-top:3px solid #3E8E6A;}
.fit-panel--no{border-top:3px solid #B2635B;}
.fit-panel h3{font-size:19px;font-weight:800;color:var(--ink);display:flex;align-items:center;gap:10px;margin-bottom:18px;}
.fit-panel h3 i{font-size:16px;}
.fit-panel--yes h3 i{color:#3E8E6A;}
.fit-panel--no h3 i{color:#B2635B;}
.fit-list li{
  position:relative;padding-left:24px;font-size:14.6px;line-height:1.86;
  color:var(--muted);margin-bottom:12px;
}
.fit-list li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:50%;
  background:var(--gold);opacity:.85;
}
.fit-panel--no .fit-list li::before{background:#B2635B;}

/* ============ 方案匹配 ============ */
.plan-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;align-items:stretch;}
.plan-card{
  position:relative;display:flex;flex-direction:column;gap:14px;min-width:0;
  padding:32px 26px;border-radius:var(--radius);background:var(--surface);
  border:1px solid var(--line);box-shadow:var(--shadow-sm);
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.plan-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);}
.plan-card--feature{
  background:linear-gradient(170deg,#0D2833,#103543);color:#fff;border-color:rgba(201,164,91,.42);
  box-shadow:var(--shadow-lg);
}
.plan-card--feature h3{color:#fff;}
.plan-card--feature .plan-desc{color:rgba(255,255,255,.70);}
.plan-card--feature li{color:rgba(255,255,255,.76);}
.plan-badge{
  position:absolute;top:20px;right:20px;font-size:11.5px;letter-spacing:1.4px;
  padding:4px 12px;border-radius:999px;background:var(--gold);color:#10222B;font-weight:700;
}
.plan-card h3{font-size:19px;font-weight:800;color:var(--ink);letter-spacing:.4px;}
.plan-desc{font-size:14.4px;line-height:1.88;color:var(--muted);}
.plan-card ul{margin-top:4px;display:flex;flex-direction:column;gap:10px;}
.plan-card li{position:relative;padding-left:22px;font-size:14px;line-height:1.8;color:var(--muted);}
.plan-card li::before{
  content:"\f00c";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;left:0;top:2px;font-size:11px;color:var(--gold-deep);
}
.plan-card--feature li::before{color:var(--gold-2);}

/* ============ 流程时间线 ============ */
.timeline{position:relative;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.tl-item{
  position:relative;min-width:0;padding:26px 24px;border-radius:var(--radius);
  background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-sm);
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.tl-item:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);border-color:rgba(201,164,91,.42);}
.tl-num{
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
  background:var(--ink);color:var(--gold-2);font-weight:800;font-size:15px;margin-bottom:16px;
}
.tl-item h3{font-size:17px;font-weight:700;color:var(--ink);margin-bottom:9px;}
.tl-item p{font-size:14.4px;line-height:1.88;color:var(--muted);}

/* ============ 入口分流 ============ */
.route-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
.route-card{
  display:flex;flex-direction:column;gap:10px;min-width:0;
  padding:26px 22px;border-radius:16px;background:var(--surface);
  border:1px solid var(--line);box-shadow:var(--shadow-sm);
  transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.route-card:hover{transform:translateY(-5px);border-color:rgba(201,164,91,.5);box-shadow:var(--shadow-md);}
.route-card i{font-size:20px;color:var(--gold-deep);}
.route-card strong{font-size:16px;font-weight:700;color:var(--ink);}
.route-card span{font-size:13.6px;line-height:1.82;color:var(--muted);}
.route-card .route-arrow{margin-top:auto;font-size:13px;color:var(--gold-deep);letter-spacing:1px;}

/* ============ 知识要点 ============ */
.knowledge-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.kn-card{
  min-width:0;padding:28px 26px;border-radius:var(--radius);
  background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-sm);
  border-left:3px solid var(--gold);
  transition:transform .3s ease,box-shadow .3s ease;
}
.kn-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);}
.kn-card h3{font-size:17.5px;font-weight:700;color:var(--ink);margin-bottom:10px;display:flex;align-items:center;gap:10px;}
.kn-card h3 i{color:var(--gold-deep);font-size:15px;}
.kn-card p{font-size:14.5px;line-height:1.9;color:var(--muted);}

/* ============ 指标速览 ============ */
.metric-bar{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;
  padding:34px 30px;border-radius:22px;
  background:linear-gradient(150deg,#0C2531,#123A48);
  border:1px solid rgba(201,164,91,.24);box-shadow:var(--shadow-lg);
}
.metric{min-width:0;text-align:center;padding:8px 6px;}
.metric strong{display:block;font-size:20px;font-weight:800;color:var(--gold-2);letter-spacing:.6px;}
.metric span{display:block;font-size:13.4px;line-height:1.8;color:rgba(255,255,255,.66);margin-top:8px;}

/* ============ 保障条 ============ */
.assure-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
.assure-item{
  display:flex;gap:14px;min-width:0;padding:22px 20px;border-radius:14px;
  background:var(--surface);border:1px solid var(--line);
  transition:border-color .3s ease,transform .3s ease;
}
.assure-item:hover{border-color:rgba(201,164,91,.45);transform:translateY(-4px);}
.assure-item i{font-size:19px;color:var(--gold-deep);margin-top:3px;}
.assure-item strong{display:block;font-size:15.4px;font-weight:700;color:var(--ink);margin-bottom:6px;}
.assure-item span{font-size:13.6px;line-height:1.82;color:var(--muted);}

/* ============ 三步上手 ============ */
.step-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.step-card{
  position:relative;min-width:0;padding:32px 26px;border-radius:var(--radius);
  background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-sm);
}
.step-card::after{
  content:"";position:absolute;right:24px;top:26px;width:34px;height:34px;border-radius:50%;
  background:rgba(201,164,91,.12);
}
.step-card .step-no{
  position:relative;z-index:1;font-size:12.5px;letter-spacing:2.2px;font-weight:700;
  color:var(--gold-deep);margin-bottom:14px;display:block;
}
.step-card h3{font-size:18px;font-weight:700;color:var(--ink);margin-bottom:10px;}
.step-card p{font-size:14.5px;line-height:1.9;color:var(--muted);}

/* ============ 分类入口墙 ============ */
.channel-wrap{
  display:grid;grid-template-columns:1.1fr .9fr;gap:26px;align-items:stretch;
}
.channel-card{
  display:flex;flex-direction:column;gap:14px;min-width:0;
  padding:34px 32px;border-radius:22px;color:#fff;
  background:linear-gradient(155deg,#0C2A36,#144253);
  border:1px solid rgba(201,164,91,.30);box-shadow:var(--shadow-lg);
  transition:transform .3s ease,box-shadow .3s ease;
}
.channel-card:hover{transform:translateY(-5px);box-shadow:0 30px 64px rgba(8,24,32,.32);}
.channel-card .channel-tag{
  align-self:flex-start;font-size:12px;letter-spacing:2px;padding:5px 14px;border-radius:999px;
  background:rgba(201,164,91,.18);color:var(--gold-2);border:1px solid rgba(201,164,91,.34);
}
.channel-card h3{font-size:22px;font-weight:800;letter-spacing:.6px;}
.channel-card p{font-size:14.6px;line-height:1.9;color:rgba(255,255,255,.72);}
.channel-link{
  margin-top:auto;display:inline-flex;align-items:center;gap:9px;
  font-size:14.5px;font-weight:700;color:var(--gold-2);
}
.channel-link:hover{color:#fff;}
.channel-side{display:flex;flex-direction:column;gap:18px;min-width:0;}
.channel-side-item{
  flex:1;display:flex;align-items:flex-start;gap:14px;min-width:0;
  padding:24px 22px;border-radius:16px;background:var(--surface);
  border:1px solid var(--line);box-shadow:var(--shadow-sm);
  transition:border-color .3s ease,transform .3s ease;
}
.channel-side-item:hover{border-color:rgba(201,164,91,.45);transform:translateY(-4px);}
.channel-side-item i{color:var(--gold-deep);font-size:17px;margin-top:4px;}
.channel-side-item strong{display:block;font-size:15.4px;color:var(--ink);margin-bottom:6px;}
.channel-side-item span{font-size:13.6px;line-height:1.82;color:var(--muted);}

/* ============ 资讯列表 ============ */
.news-wrap{display:grid;grid-template-columns:1.55fr 1fr;gap:32px;align-items:start;}
.news-list{display:flex;flex-direction:column;gap:0;}
.news-item{
  display:block;min-width:0;padding:24px 0;border-bottom:1px solid var(--line);
  transition:padding-left .28s ease;
}
.news-item:first-child{padding-top:0;}
.news-item:hover{padding-left:8px;}
.news-item .news-cat{
  display:inline-block;font-size:12px;letter-spacing:1.4px;color:var(--gold-deep);
  background:rgba(201,164,91,.13);padding:3px 11px;border-radius:999px;margin-bottom:10px;
}
.news-item h3{
  font-size:17.5px;font-weight:700;color:var(--ink);line-height:1.6;
  transition:color .25s ease;
}
.news-item:hover h3{color:var(--gold-deep);}
.news-item p{font-size:14.3px;line-height:1.88;color:var(--muted);margin-top:8px;}
.news-item time{display:block;font-size:12.8px;color:#91A0A7;margin-top:10px;letter-spacing:.6px;}
.news-side{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 26px;box-shadow:var(--shadow-sm);
}
.news-side h3{font-size:16.5px;font-weight:800;color:var(--ink);margin-bottom:16px;letter-spacing:.6px;}
.news-side-list{display:flex;flex-direction:column;gap:14px;}
.news-side-list a{
  display:block;min-width:0;font-size:14.3px;line-height:1.76;color:var(--text);
  padding-bottom:14px;border-bottom:1px dashed var(--line);transition:color .25s ease;
}
.news-side-list a:last-child{border-bottom:none;padding-bottom:0;}
.news-side-list a:hover{color:var(--gold-deep);}
.news-side-list .side-date{display:block;font-size:12.4px;color:#95A4AB;margin-top:6px;}
.empty-tip{
  padding:34px 26px;border-radius:var(--radius);border:1px dashed var(--line);
  background:var(--surface);color:var(--muted);font-size:14.5px;text-align:center;
}

/* ============ 对比表 ============ */
.compare-wrap{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.compare-col{
  min-width:0;border-radius:var(--radius);background:var(--surface);
  border:1px solid var(--line);box-shadow:var(--shadow-sm);overflow:hidden;
}
.compare-head{padding:24px 26px;border-bottom:1px solid var(--line);}
.compare-head h3{font-size:18px;font-weight:800;color:var(--ink);margin-bottom:6px;}
.compare-head span{font-size:13.4px;color:var(--muted);}
.compare-col--dark .compare-head{background:linear-gradient(150deg,#0D2833,#143C4B);border-bottom-color:rgba(255,255,255,.10);}
.compare-col--dark .compare-head h3{color:#fff;}
.compare-col--dark .compare-head span{color:rgba(255,255,255,.62);}
.compare-row{display:flex;gap:14px;padding:16px 26px;border-bottom:1px solid var(--line);}
.compare-row:last-child{border-bottom:none;}
.compare-row dt{flex:0 0 96px;font-size:13.6px;color:var(--gold-deep);font-weight:700;}
.compare-row dd{margin:0;font-size:14px;line-height:1.8;color:var(--muted);min-width:0;}
.compare-col--dark .compare-row{border-bottom-color:rgba(255,255,255,.08);}
.compare-col--dark .compare-row dt{color:var(--gold-2);}
.compare-col--dark .compare-row dd{color:rgba(255,255,255,.72);}

/* ============ FAQ ============ */
.faq-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.faq-item{
  min-width:0;padding:26px 26px;border-radius:16px;background:var(--surface);
  border:1px solid var(--line);box-shadow:var(--shadow-sm);
  transition:border-color .3s ease,box-shadow .3s ease;
}
.faq-item:hover{border-color:rgba(201,164,91,.45);box-shadow:var(--shadow-md);}
.faq-item h3{
  font-size:16.4px;font-weight:700;color:var(--ink);line-height:1.6;
  display:flex;gap:10px;margin-bottom:10px;
}
.faq-item h3 i{color:var(--gold-deep);font-size:14px;margin-top:5px;flex:0 0 auto;}
.faq-item p{font-size:14.3px;line-height:1.9;color:var(--muted);}

/* ============ 收口 ============ */
.closing{
  padding:52px 0;background:linear-gradient(150deg,#0A1E28,#12323E);color:#fff;
}
.closing-inner{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.closing-text{max-width:720px;min-width:0;}
.closing-text h2{font-size:clamp(20px,2.3vw,26px);font-weight:800;letter-spacing:.6px;color:#fff;line-height:1.5;}
.closing-text p{font-size:14.3px;line-height:1.9;color:rgba(255,255,255,.66);margin-top:12px;}

/* ============ 页脚 ============ */
.site-footer{background:#071720;color:rgba(255,255,255,.66);padding:66px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:44px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.footer-brand .brand-mark{width:40px;height:40px;border-radius:12px;font-size:17px;}
.footer-brand span{font-size:17px;font-weight:800;color:#fff;letter-spacing:.8px;}
.footer-about p{font-size:13.8px;line-height:1.95;color:rgba(255,255,255,.56);max-width:420px;}
.footer-col h3{
  font-size:14px;font-weight:700;color:#fff;letter-spacing:1.4px;margin-bottom:18px;
}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col a{
  font-size:13.8px;color:rgba(255,255,255,.60);transition:color .25s ease,padding-left .25s ease;
}
.footer-col a:hover{color:var(--gold-2);padding-left:4px;}
.footer-friend{margin-top:44px;padding-top:28px;border-top:1px solid rgba(255,255,255,.10);}
.footer-friend h3{font-size:14px;font-weight:700;color:#fff;letter-spacing:1.4px;margin-bottom:14px;}
.friend-links{display:flex;flex-wrap:wrap;gap:10px 24px;}
.friend-links a{font-size:13.6px;color:rgba(255,255,255,.62);transition:color .25s ease;}
.friend-links a:hover{color:var(--gold-2);}
.footer-bottom{
  margin-top:34px;padding-top:22px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  font-size:12.8px;color:rgba(255,255,255,.42);
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .nav-links{display:none;}
  .nav-toggle{display:grid;place-items:center;}
  .nav-cta{display:none;}
  .hero{padding:140px 0 78px;min-height:auto;}
  .grid-3,.plan-grid,.timeline,.knowledge-grid,.route-grid,.assure-grid,.step-grid,.dl-grid,.metric-bar,.grid-4{
    grid-template-columns:repeat(2,minmax(0,1fr));
  }
  .news-wrap,.channel-wrap,.compare-wrap{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .footer-about{grid-column:1 / -1;}
}
@media (max-width:768px){
  .section{padding:64px 0;}
  .section--tight{padding:48px 0;}
  .hero{padding:126px 0 66px;}
  .hero-lead{font-size:15.4px;}
  .hero-stats{gap:22px 34px;}
  .grid-2,.grid-3,.grid-4,.plan-grid,.timeline,.knowledge-grid,.route-grid,.assure-grid,.step-grid,.dl-grid,.metric-bar,.fit-grid,.faq-list,.compare-wrap{
    grid-template-columns:minmax(0,1fr);
  }
  .footer-grid{grid-template-columns:1fr;}
  .closing-inner{flex-direction:column;align-items:flex-start;}
  .compare-row dt{flex-basis:88px;}
}
@media (max-width:520px){
  .site-container{padding:0 18px;}
  .brand-name{font-size:15.5px;}
  .brand-sub{font-size:10px;letter-spacing:2px;}
  .hero h1{font-size:26px;}
  .hero-actions .btn{width:100%;}
  .hero-play{width:72px;height:72px;}
  .section-title{font-size:22px;}
  .news-item h3{font-size:16.2px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: article */
:root{
  --ink:#0A1C26;
  --ink-2:#0E2833;
  --ink-3:#163A48;
  --gold:#C9A45B;
  --gold-2:#E6CE9C;
  --gold-deep:#A8802F;
  --bg:#F5F6F4;
  --bg-muted:#EDF1EF;
  --surface:#FFFFFF;
  --text:#152128;
  --muted:#5E7079;
  --line:#E2E7E4;
  --radius:18px;
  --shadow-sm:0 2px 12px rgba(10,28,38,.06);
  --shadow-md:0 16px 44px rgba(10,28,38,.10);
  --shadow-lg:0 26px 60px rgba(10,28,38,.16);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
.site-body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.78;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color .25s ease;}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
.site-container{max-width:1180px;margin:0 auto;padding:0 24px;width:100%;}
section[id]{scroll-margin-top:96px;}
.section{padding:84px 0;}
.section--tight{padding:58px 0;}
.section--muted{background:var(--bg-muted);}
.section--paper{background:var(--surface);}
.section-head{max-width:760px;margin-bottom:38px;}
.section-head--center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:2.4px;font-weight:600;
  color:var(--gold-deep);text-transform:uppercase;margin-bottom:12px;
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--gold);display:inline-block;}
.section-title{
  font-size:clamp(22px,2.7vw,32px);line-height:1.38;font-weight:800;
  color:var(--ink);letter-spacing:.5px;
}
.section-title em{font-style:normal;color:var(--gold-deep);}
.section-desc{margin-top:14px;color:var(--muted);font-size:15.5px;line-height:1.92;}
/* ============ 导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  background:rgba(10,28,38,.26);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(255,255,255,.10);
  transition:background .32s ease,border-color .32s ease,box-shadow .32s ease;
}
.site-header.is-stuck{
  background:rgba(8,22,30,.94);
  border-bottom-color:rgba(201,164,91,.30);
  box-shadow:0 12px 34px rgba(6,18,24,.30);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:22px;height:76px;}
.brand{display:flex;align-items:center;gap:12px;color:#fff;min-width:0;}
.brand-mark{
  width:42px;height:42px;border-radius:13px;flex:0 0 auto;
  background:linear-gradient(140deg,#E2C68C,#B98F45);
  display:grid;place-items:center;font-weight:800;font-size:18px;color:#0A1C26;
  box-shadow:0 8px 22px rgba(201,164,91,.34);
}
.brand-text{min-width:0;}
.brand-name{display:block;font-size:17px;font-weight:800;letter-spacing:1px;white-space:nowrap;}
.brand-sub{display:block;font-size:11px;letter-spacing:2.6px;color:rgba(255,255,255,.58);font-weight:400;margin-top:2px;}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;padding:10px 16px;border-radius:10px;font-size:15px;
  color:rgba(255,255,255,.82);transition:background .25s,color .25s;
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.09);}
.nav-link.is-active{color:var(--gold-2);}
.nav-link.is-active::after{
  content:"";position:absolute;left:16px;right:16px;bottom:5px;height:2px;
  background:var(--gold);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:12px;}
.nav-cta{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 22px;border-radius:11px;font-size:14.5px;font-weight:700;
  background:linear-gradient(135deg,#DCBC7C,#B98F45);color:#10222B;
  box-shadow:0 10px 24px rgba(201,164,91,.28);
  transition:transform .25s ease,box-shadow .25s ease;
}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 16px 30px rgba(201,164,91,.38);}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:11px;border:1px solid rgba(255,255,255,.24);
  background:rgba(255,255,255,.06);color:#fff;font-size:17px;cursor:pointer;
}
.nav-toggle:focus-visible{outline:2px solid var(--gold-2);outline-offset:2px;}
.mobile-nav{display:none;border-top:1px solid rgba(255,255,255,.12);background:rgba(8,22,30,.97);}
.mobile-nav.open{display:block;}
.mobile-nav a{
  display:block;padding:15px 24px;font-size:15.5px;color:rgba(255,255,255,.84);
  border-bottom:1px solid rgba(255,255,255,.07);
}
.mobile-nav a:last-child{border-bottom:none;}
.mobile-nav a:hover{background:rgba(255,255,255,.06);color:#fff;}
/* ============ 内页标题区 ============ */
.page-hero{
  position:relative;overflow:hidden;
  padding:138px 0 78px;
  background:
    radial-gradient(820px 420px at 82% 6%, rgba(201,164,91,.20), transparent 62%),
    radial-gradient(680px 400px at 6% 92%, rgba(58,132,160,.24), transparent 62%),
    linear-gradient(152deg,#08171F 0%,#0D2833 58%,#071A22 100%);
  color:#fff;
}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:
    linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 50% 30%,#000 28%,transparent 76%);
  -webkit-mask-image:radial-gradient(circle at 50% 30%,#000 28%,transparent 76%);
}
.page-hero-inner{position:relative;z-index:2;max-width:900px;}
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:9px;
  font-size:13.5px;color:rgba(255,255,255,.55);margin-bottom:20px;
}
.breadcrumb a{color:rgba(255,255,255,.72);}
.breadcrumb a:hover{color:var(--gold-2);}
.breadcrumb .current{color:rgba(255,255,255,.9);}
.article-meta-top{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:16px;}
.tag{
  display:inline-flex;align-items:center;gap:7px;padding:6px 14px;border-radius:999px;
  font-size:12.5px;letter-spacing:1px;font-weight:600;
}
.tag-gold{
  background:rgba(201,164,91,.14);
  border:1px solid rgba(201,164,91,.45);
  color:var(--gold-2);
}
.meta-item{display:inline-flex;align-items:center;gap:7px;font-size:13.5px;color:rgba(255,255,255,.62);}
.page-title{
  font-size:clamp(24px,3.5vw,40px);line-height:1.34;font-weight:800;
  letter-spacing:.8px;color:#fff;margin:0 0 18px;
}
.page-sub{color:rgba(255,255,255,.74);font-size:15.5px;line-height:1.95;max-width:820px;}
/* ============ 摘要条 ============ */
.takeaway-wrap{background:var(--bg);padding-bottom:0;}
.takeaway{
  position:relative;z-index:3;margin-top:-44px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-md);padding:26px 30px;
}
.takeaway-title{
  display:flex;align-items:center;gap:9px;font-size:14px;font-weight:800;
  letter-spacing:1.4px;color:var(--gold-deep);margin-bottom:18px;
}
.takeaway-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.takeaway-item{min-width:0;display:flex;gap:12px;align-items:flex-start;}
.takeaway-icon{
  flex:0 0 auto;width:34px;height:34px;border-radius:10px;
  background:rgba(201,164,91,.14);color:var(--gold-deep);
  display:grid;place-items:center;font-size:14px;
}
.takeaway-item h3{font-size:15px;font-weight:700;color:var(--ink);margin-bottom:4px;}
.takeaway-item p{font-size:14px;color:var(--muted);line-height:1.82;}
/* ============ 正文布局 ============ */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 320px;
  gap:36px;align-items:start;
}
.article-main{min-width:0;}
.article-body{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-sm);padding:38px 40px;
}
.article-body > *:first-child{margin-top:0;}
.article-body h2{
  font-size:21px;line-height:1.52;font-weight:800;color:var(--ink);
  margin:34px 0 14px;padding-left:14px;border-left:4px solid var(--gold);
}
.article-body h3{
  font-size:17.5px;line-height:1.6;font-weight:700;color:var(--ink-3);margin:26px 0 10px;
}
.article-body h4{font-size:16px;font-weight:700;color:var(--ink-3);margin:22px 0 8px;}
.article-body p{margin:0 0 16px;line-height:1.98;color:var(--text);}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:22px;color:var(--text);}
.article-body li{margin-bottom:8px;line-height:1.92;}
.article-body strong{color:var(--ink);font-weight:700;}
.article-body a{color:var(--gold-deep);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--ink);}
.article-body img{border-radius:12px;margin:20px 0;width:100%;height:auto;}
.article-body blockquote{
  margin:20px 0;padding:16px 20px;background:var(--bg-muted);
  border-left:4px solid var(--gold);border-radius:10px;color:var(--muted);font-size:15px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.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(--line);padding:10px 12px;text-align:left;}
.article-body th{background:var(--bg-muted);color:var(--ink);font-weight:700;}
.article-body hr{border:none;border-top:1px solid var(--line);margin:26px 0;}
.empty-state{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-sm);padding:56px 40px;text-align:center;
}
.empty-state .empty-icon{
  width:64px;height:64px;border-radius:20px;margin:0 auto 18px;
  background:rgba(201,164,91,.14);color:var(--gold-deep);
  display:grid;place-items:center;font-size:24px;
}
.empty-state h2{font-size:20px;font-weight:800;color:var(--ink);margin-bottom:10px;}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:24px;}
/* ============ 侧栏 ============ */
.article-side{min-width:0;display:flex;flex-direction:column;gap:20px;position:sticky;top:96px;}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:16px;
  box-shadow:var(--shadow-sm);padding:24px;
}
.side-card h3{
  font-size:14px;font-weight:800;letter-spacing:1.2px;color:var(--gold-deep);
  margin-bottom:14px;display:flex;align-items:center;gap:8px;
}
.side-list{list-style:none;padding:0;margin:0;}
.side-list li{
  position:relative;padding-left:18px;font-size:14.5px;color:var(--muted);
  line-height:1.85;margin-bottom:10px;
}
.side-list li:last-child{margin-bottom:0;}
.side-list li::before{
  content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:2px;
  background:var(--gold);opacity:.8;
}
.side-card--dark{
  background:linear-gradient(150deg,#0E2833,#163A48);border-color:rgba(201,164,91,.28);
  color:#fff;
}
.side-card--dark h3{color:var(--gold-2);}
.side-card--dark p{color:rgba(255,255,255,.72);font-size:14px;line-height:1.85;margin-bottom:16px;}
.side-dl{display:flex;flex-direction:column;gap:10px;}
.side-dl a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 16px;border-radius:11px;font-size:14px;font-weight:700;
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);color:#fff;
  transition:background .25s,border-color .25s,transform .25s;
}
.side-dl a:hover{background:rgba(201,164,91,.20);border-color:rgba(201,164,91,.55);transform:translateX(2px);}
.side-dl a i{color:var(--gold-2);}
/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 28px;border-radius:12px;font-size:15px;font-weight:700;
  border:1px solid transparent;cursor:pointer;
  transition:transform .25s ease,box-shadow .25s ease,background .25s ease,color .25s ease,border-color .25s ease;
}
.btn:focus-visible{outline:2px solid var(--gold);outline-offset:3px;}
.btn-primary{
  background:linear-gradient(135deg,#DCBC7C,#B98F45);color:#10222B;
  box-shadow:0 10px 24px rgba(201,164,91,.28);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(201,164,91,.38);}
.btn-ghost{
  background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.28);color:#fff;
}
.btn-ghost:hover{background:rgba(255,255,255,.14);border-color:rgba(201,164,91,.6);}
.btn-outline{
  background:transparent;border-color:var(--line);color:var(--ink);
}
.btn-outline:hover{border-color:var(--gold);color:var(--gold-deep);transform:translateY(-2px);}
/* ============ 文中 CTA ============ */
.cta-band{
  background:
    radial-gradient(520px 260px at 88% 12%, rgba(201,164,91,.24), transparent 60%),
    linear-gradient(135deg,#0E2833,#163A48);
  border-radius:22px;padding:38px 40px;color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  box-shadow:var(--shadow-md);
}
.cta-band h2{font-size:clamp(19px,2.2vw,25px);font-weight:800;line-height:1.45;margin-bottom:10px;}
.cta-band p{color:rgba(255,255,255,.72);font-size:15px;line-height:1.9;max-width:640px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}
/* ============ 步骤 ============ */
.step-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
.step-card{
  min-width:0;background:var(--surface);border:1px solid var(--line);border-radius:16px;
  padding:24px;box-shadow:var(--shadow-sm);transition:transform .28s,box-shadow .28s,border-color .28s;
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:rgba(201,164,91,.5);}
.step-num{
  width:38px;height:38px;border-radius:11px;margin-bottom:14px;
  background:rgba(201,164,91,.14);color:var(--gold-deep);
  display:grid;place-items:center;font-weight:800;font-size:15px;
}
.step-card h3{font-size:16px;font-weight:700;color:var(--ink);margin-bottom:8px;}
.step-card p{font-size:14.2px;color:var(--muted);line-height:1.86;}
/* ============ 知识卡片 ============ */
.knowledge-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;}
.knowledge-card{
  min-width:0;background:var(--surface);border:1px solid var(--line);border-radius:16px;
  padding:26px 28px;box-shadow:var(--shadow-sm);
  transition:transform .28s,box-shadow .28s,border-color .28s;
}
.knowledge-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:rgba(201,164,91,.45);}
.knowledge-head{display:flex;align-items:center;gap:12px;margin-bottom:12px;}
.knowledge-icon{
  flex:0 0 auto;width:40px;height:40px;border-radius:12px;
  background:linear-gradient(140deg,rgba(201,164,91,.22),rgba(201,164,91,.08));
  color:var(--gold-deep);display:grid;place-items:center;font-size:16px;
}
.knowledge-card h3{font-size:16.5px;font-weight:700;color:var(--ink);line-height:1.5;}
.knowledge-card p{font-size:14.5px;color:var(--muted);line-height:1.9;}
/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:14px;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:14px;
  padding:0 24px;box-shadow:var(--shadow-sm);transition:border-color .25s,box-shadow .25s;
}
.faq-item:hover{border-color:rgba(201,164,91,.5);box-shadow:var(--shadow-md);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 0;font-weight:700;font-size:15.5px;
  color:var(--ink);display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:focus-visible{outline:2px solid var(--gold);outline-offset:2px;}
.faq-item summary::after{
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;font-size:12px;
  color:var(--gold-deep);transition:transform .28s ease;flex:0 0 auto;
}
.faq-item[open] summary::after{transform:rotate(180deg);}
.faq-item p{color:var(--muted);font-size:14.5px;line-height:1.92;padding-bottom:18px;margin:0;}
/* ============ 下载区 ============ */
.download-band{
  background:var(--surface);border:1px solid var(--line);border-radius:22px;
  box-shadow:var(--shadow-md);padding:40px;
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);gap:34px;align-items:center;
}
.download-copy h2{font-size:clamp(20px,2.3vw,27px);font-weight:800;color:var(--ink);line-height:1.42;margin-bottom:12px;}
.download-copy p{color:var(--muted);font-size:15px;line-height:1.92;}
.dl-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;}
.dl-btn{
  min-width:0;display:flex;flex-direction:column;align-items:center;gap:9px;
  padding:22px 12px;border-radius:15px;border:1px solid var(--line);background:var(--bg-muted);
  text-align:center;transition:transform .28s,box-shadow .28s,border-color .28s,background .28s;
}
.dl-btn:hover{
  transform:translateY(-4px);background:#fff;border-color:rgba(201,164,91,.55);
  box-shadow:0 16px 32px rgba(10,28,38,.12);
}
.dl-btn i{font-size:22px;color:var(--gold-deep);}
.dl-btn span{font-size:14px;font-weight:700;color:var(--ink);}
.dl-btn small{font-size:12px;color:var(--muted);letter-spacing:.6px;}
/* ============ 延伸阅读 ============ */
.readmore{
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  background:var(--surface);border:1px solid var(--line);border-radius:16px;
  padding:24px 28px;box-shadow:var(--shadow-sm);
}
.readmore h2{font-size:17px;font-weight:800;color:var(--ink);margin-bottom:6px;}
.readmore p{font-size:14.5px;color:var(--muted);line-height:1.86;}
.readmore-links{display:flex;align-items:center;gap:16px;flex-wrap:wrap;}
.readmore-links a{
  font-size:14.5px;font-weight:700;color:var(--gold-deep);display:inline-flex;align-items:center;gap:7px;
}
.readmore-links a:hover{color:var(--ink);}
/* ============ 页脚 ============ */
.site-footer{background:#08171F;color:rgba(255,255,255,.70);padding:64px 0 26px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.6fr) repeat(2,minmax(0,1fr));gap:40px;}
.footer-brand{display:flex;align-items:center;gap:12px;color:#fff;font-size:17px;font-weight:800;letter-spacing:1px;margin-bottom:16px;}
.footer-about p{font-size:14.2px;line-height:1.92;color:rgba(255,255,255,.62);max-width:520px;}
.footer-col h3{font-size:14px;font-weight:700;color:#fff;letter-spacing:1.2px;margin-bottom:16px;}
.footer-col ul{list-style:none;padding:0;margin:0;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14.2px;color:rgba(255,255,255,.62);}
.footer-col a:hover{color:var(--gold-2);}
.footer-friend{border-top:1px solid rgba(255,255,255,.10);margin-top:40px;padding-top:24px;}
.footer-friend h3{font-size:13.5px;font-weight:700;color:rgba(255,255,255,.86);letter-spacing:1.2px;margin-bottom:14px;}
.friend-links{display:flex;flex-wrap:wrap;gap:10px 22px;}
.friend-links a{font-size:13.6px;color:rgba(255,255,255,.58);}
.friend-links a:hover{color:var(--gold-2);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.10);margin-top:24px;padding-top:20px;
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.45);
}
/* ============ 响应式 ============ */
@media (max-width:1024px){
  .nav-links{display:none;}
  .nav-toggle{display:grid;place-items:center;}
  .nav-cta{padding:10px 18px;font-size:14px;}
  .article-layout{grid-template-columns:1fr;}
  .article-side{position:static;}
  .step-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .download-band{grid-template-columns:1fr;padding:32px;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
}
@media (max-width:768px){
  .page-hero{padding:120px 0 72px;}
  .takeaway{padding:22px;margin-top:-38px;}
  .takeaway-grid{grid-template-columns:1fr;gap:16px;}
  .article-body{padding:26px 22px;}
  .article-body h2{font-size:19px;}
  .knowledge-grid{grid-template-columns:1fr;}
  .cta-band{padding:28px 24px;}
  .dl-grid{grid-template-columns:1fr;}
  .dl-btn{flex-direction:row;justify-content:flex-start;gap:14px;padding:16px 18px;text-align:left;}
  .dl-btn span{margin-right:auto;}
  .section{padding:60px 0;}
  .section--tight{padding:44px 0;}
  .readmore{padding:22px;}
}
@media (max-width:520px){
  .site-container{padding:0 18px;}
  .brand-sub{display:none;}
  .nav-cta{display:none;}
  .step-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .page-title{font-size:23px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}

/* roulang page: category1 */
:root{
  --ink:#0A1C26;
  --ink-2:#0E2833;
  --ink-3:#163A48;
  --gold:#C9A45B;
  --gold-2:#E6CE9C;
  --gold-deep:#A8802F;
  --bg:#F5F6F4;
  --bg-muted:#EDF1EF;
  --surface:#FFFFFF;
  --text:#152128;
  --muted:#5E7079;
  --line:#E2E7E4;
  --radius:18px;
  --shadow-sm:0 2px 12px rgba(10,28,38,.06);
  --shadow-md:0 16px 44px rgba(10,28,38,.10);
  --shadow-lg:0 26px 60px rgba(10,28,38,.16);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body.site-body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.78;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color .25s ease;}
button{font-family:inherit;}
.site-container{max-width:1180px;margin:0 auto;padding:0 24px;width:100%;}

/* ============ 导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  background:rgba(10,28,38,.28);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(255,255,255,.10);
  transition:background .32s ease,border-color .32s ease,box-shadow .32s ease;
}
.site-header.is-stuck{
  background:rgba(8,22,30,.95);
  border-bottom-color:rgba(201,164,91,.30);
  box-shadow:0 12px 34px rgba(6,18,24,.30);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:22px;height:76px;}
.brand{display:flex;align-items:center;gap:12px;color:#fff;min-width:0;}
.brand-mark{
  width:42px;height:42px;border-radius:13px;flex:0 0 auto;
  background:linear-gradient(140deg,#E2C68C,#B98F45);
  display:grid;place-items:center;font-weight:800;font-size:18px;color:#0A1C26;
  box-shadow:0 8px 22px rgba(201,164,91,.34);
}
.brand-text{min-width:0;}
.brand-name{display:block;font-size:17px;font-weight:800;letter-spacing:1px;white-space:nowrap;}
.brand-sub{display:block;font-size:11px;letter-spacing:2.4px;color:rgba(255,255,255,.58);font-weight:400;margin-top:2px;}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;padding:10px 16px;border-radius:10px;font-size:15px;
  color:rgba(255,255,255,.82);transition:background .25s,color .25s;
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.09);}
.nav-link.is-active{color:var(--gold-2);}
.nav-link.is-active::after{
  content:"";position:absolute;left:16px;right:16px;bottom:5px;height:2px;
  background:var(--gold);border-radius:2px;
}
.nav-actions{display:none;align-items:center;gap:10px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:11px;border:1px solid rgba(255,255,255,.24);
  background:rgba(255,255,255,.06);color:#fff;font-size:17px;cursor:pointer;
  align-items:center;justify-content:center;
}
.nav-toggle:focus-visible{outline:2px solid var(--gold-2);outline-offset:2px;}
.mobile-nav{display:none;border-top:1px solid rgba(255,255,255,.12);background:rgba(8,22,30,.98);}
.mobile-nav.open{display:block;}
.mobile-nav a{display:block;padding:15px 24px;font-size:15.5px;color:rgba(255,255,255,.84);border-bottom:1px solid rgba(255,255,255,.07);}
.mobile-nav a:last-child{border-bottom:none;}
.mobile-nav a:hover{background:rgba(255,255,255,.06);color:#fff;}

/* ============ 通用板块 ============ */
.section{padding:86px 0;}
.section--tight{padding:62px 0;}
.section--muted{background:var(--bg-muted);}
.section--paper{background:var(--surface);}
.section--ink{
  background:
    radial-gradient(760px 420px at 82% 10%,rgba(201,164,91,.16),transparent 62%),
    linear-gradient(150deg,#0A1C26 0%,#123340 60%,#091B23 100%);
  color:rgba(255,255,255,.76);
}
.section-head{max-width:780px;margin-bottom:44px;}
.section-head--center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:2.4px;font-weight:600;
  color:var(--gold-deep);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--gold);display:inline-block;}
.section--ink .eyebrow{color:var(--gold-2);}
.section-title{font-size:clamp(23px,2.8vw,33px);line-height:1.36;font-weight:800;color:var(--ink);letter-spacing:.5px;margin:0;}
.section--ink .section-title{color:#fff;}
.section-title em{font-style:normal;color:var(--gold-deep);}
.section--ink .section-title em{color:var(--gold-2);}
.section-desc{margin-top:16px;color:var(--muted);font-size:15.5px;line-height:1.95;}
.section--ink .section-desc{color:rgba(255,255,255,.70);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 28px;border-radius:12px;font-size:15px;font-weight:700;
  border:1px solid transparent;cursor:pointer;
  transition:transform .25s ease,box-shadow .25s ease,background .25s ease,color .25s ease,border-color .25s ease;
}
.btn:focus-visible{outline:2px solid var(--gold-2);outline-offset:3px;}
.btn-gold{
  background:linear-gradient(135deg,#DCBC7C,#B98F45);color:#10222B;
  box-shadow:0 12px 26px rgba(201,164,91,.30);
}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 18px 34px rgba(201,164,91,.40);}
.btn-ghost{
  background:rgba(255,255,255,.06);color:#fff;border-color:rgba(255,255,255,.28);
}
.btn-ghost:hover{background:rgba(255,255,255,.14);border-color:rgba(201,164,91,.55);transform:translateY(-2px);}

/* ============ 分类页 Hero ============ */
.hero-cat{
  position:relative;overflow:hidden;
  padding:148px 0 88px;
  background:
    radial-gradient(900px 480px at 80% 12%,rgba(201,164,91,.20),transparent 62%),
    radial-gradient(720px 420px at 6% 88%,rgba(58,132,160,.24),transparent 64%),
    linear-gradient(152deg,#08171F 0%,#0D2833 54%,#071A22 100%);
}
.hero-grid-bg{
  position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:
    linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 50% 38%,#000 30%,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 50% 38%,#000 30%,transparent 78%);
}
.hero-layout{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.14fr .86fr;gap:52px;align-items:center;
}
.crumb{font-size:13px;color:rgba(255,255,255,.52);margin-bottom:20px;display:flex;flex-wrap:wrap;gap:8px;align-items:center;}
.crumb a{color:rgba(255,255,255,.72);}
.crumb a:hover{color:var(--gold-2);}
.crumb span.sep{color:rgba(255,255,255,.30);}
.hero-badge{
  display:inline-flex;align-items:center;gap:9px;padding:8px 18px;border-radius:999px;
  border:1px solid rgba(201,164,91,.45);background:rgba(201,164,91,.10);
  color:var(--gold-2);font-size:13px;letter-spacing:1.4px;
}
.hero-cat h1{
  margin:22px 0 20px;color:#fff;font-weight:800;letter-spacing:.8px;
  font-size:clamp(26px,3.6vw,44px);line-height:1.28;
}
.hero-cat h1 .accent{color:var(--gold-2);}
.hero-lead{max-width:640px;color:rgba(255,255,255,.76);font-size:16px;line-height:2;margin:0;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:32px;}
.hero-points{
  list-style:none;margin:34px 0 0;padding:0;
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 22px;
}
.hero-points li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14px;color:rgba(255,255,255,.70);line-height:1.75;min-width:0;
}
.hero-points i{color:var(--gold);font-size:13px;margin-top:6px;flex:0 0 auto;}
.hero-panel{
  background:linear-gradient(160deg,rgba(255,255,255,.10),rgba(255,255,255,.03));
  border:1px solid rgba(201,164,91,.30);
  border-radius:22px;padding:26px 24px;
  box-shadow:0 26px 60px rgba(4,14,20,.45);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  min-width:0;
}
.panel-title{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:14.5px;font-weight:700;color:#fff;letter-spacing:1px;
  padding-bottom:16px;border-bottom:1px solid rgba(255,255,255,.12);
}
.panel-title i{color:var(--gold-2);}
.panel-row{display:flex;justify-content:space-between;gap:16px;padding:14px 0;border-bottom:1px dashed rgba(255,255,255,.12);}
.panel-row:last-of-type{border-bottom:none;}
.panel-k{font-size:13.5px;color:rgba(255,255,255,.62);flex:0 0 auto;}
.panel-v{font-size:14px;color:#fff;font-weight:600;text-align:right;min-width:0;}
.panel-note{font-size:12.5px;color:rgba(255,255,255,.48);margin:14px 0 0;line-height:1.75;}

/* ============ 三个数 ============ */
.num-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.num-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 24px;box-shadow:var(--shadow-sm);min-width:0;
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.num-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:rgba(201,164,91,.45);}
.num-idx{font-size:12.5px;letter-spacing:2.4px;font-weight:700;color:var(--gold-deep);}
.num-card h3{margin:10px 0 12px;font-size:18px;font-weight:800;color:var(--ink);line-height:1.5;}
.num-card p{margin:0;font-size:14.5px;color:var(--muted);line-height:1.9;}
.mini-list{list-style:none;margin:16px 0 0;padding:0;display:grid;gap:8px;}
.mini-list li{position:relative;padding-left:16px;font-size:13.5px;color:var(--text);line-height:1.7;}
.mini-list li::before{content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:50%;background:var(--gold);}

/* ============ 流程 ============ */
.flow-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:20px;}
.flow-item{position:relative;padding-top:36px;min-width:0;}
.flow-item::before{
  content:"";position:absolute;top:9px;left:0;right:0;height:2px;
  background:linear-gradient(90deg,rgba(201,164,91,.60),rgba(201,164,91,.10));
}
.flow-dot{
  position:absolute;top:1px;left:0;width:18px;height:18px;border-radius:50%;
  background:var(--gold);box-shadow:0 0 0 5px rgba(201,164,91,.16);
}
.flow-item h3{margin:0 0 10px;font-size:16px;font-weight:800;color:var(--ink);line-height:1.5;}
.flow-item p{margin:0;font-size:14px;color:var(--muted);line-height:1.85;}

/* ============ 计算示例 ============ */
.calc-layout{display:grid;grid-template-columns:1.05fr .95fr;gap:46px;align-items:center;}
.calc-copy p{font-size:15px;line-height:2;color:rgba(255,255,255,.74);margin:0 0 16px;}
.calc-card{
  background:rgba(255,255,255,.06);border:1px solid rgba(201,164,91,.30);
  border-radius:20px;padding:26px 24px;box-shadow:0 22px 50px rgba(3,12,17,.40);min-width:0;
}
.calc-card h3{margin:0 0 16px;font-size:15px;font-weight:700;color:var(--gold-2);letter-spacing:1px;}
.calc-row{display:flex;justify-content:space-between;gap:14px;padding:11px 0;border-bottom:1px dashed rgba(255,255,255,.14);font-size:14.5px;}
.calc-row:last-of-type{border-bottom:none;}
.calc-row span:first-child{color:rgba(255,255,255,.62);}
.calc-row span:last-child{color:#fff;font-weight:700;text-align:right;}
.calc-foot{margin:16px 0 0;font-size:12.5px;color:rgba(255,255,255,.46);line-height:1.75;}

/* ============ 辨别要点 ============ */
.check-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.check-card{
  position:relative;background:var(--surface);border:1px solid var(--line);border-radius:16px;
  padding:24px 26px 24px 30px;box-shadow:var(--shadow-sm);min-width:0;
  transition:transform .28s ease,box-shadow .28s ease;
}
.check-card::before{content:"";position:absolute;left:0;top:20px;bottom:20px;width:3px;border-radius:3px;background:var(--gold);}
.check-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);}
.check-card h3{margin:0 0 10px;font-size:16.5px;font-weight:800;color:var(--ink);line-height:1.5;display:flex;gap:10px;align-items:center;}
.check-card h3 i{color:var(--gold-deep);font-size:14px;}
.check-card p{margin:0;font-size:14.5px;color:var(--muted);line-height:1.9;}

/* ============ 场景 ============ */
.scene-list{display:grid;gap:16px;}
.scene-item{
  display:grid;grid-template-columns:66px minmax(0,1fr);gap:22px;align-items:start;
  background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--gold);
  border-radius:14px;padding:24px 26px;min-width:0;
  transition:transform .26s ease,box-shadow .26s ease;
}
.scene-item:hover{transform:translateX(4px);box-shadow:var(--shadow-sm);}
.scene-num{font-size:26px;font-weight:800;color:rgba(201,164,91,.55);line-height:1.1;}
.scene-body{min-width:0;}
.scene-body h3{margin:0 0 8px;font-size:17px;font-weight:800;color:var(--ink);}
.scene-body p{margin:0;font-size:14.5px;color:var(--muted);line-height:1.9;}

/* ============ 资讯列表 ============ */
.post-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.post-card{
  display:flex;flex-direction:column;gap:10px;min-width:0;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow-sm);
  transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:rgba(201,164,91,.45);}
.post-tag{
  align-self:flex-start;font-size:12px;padding:3px 11px;border-radius:999px;
  background:rgba(201,164,91,.14);color:var(--gold-deep);letter-spacing:.4px;
}
.post-card h3{
  margin:0;font-size:16.5px;line-height:1.6;font-weight:700;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card p{
  margin:0;font-size:14px;color:var(--muted);line-height:1.85;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{font-size:12.5px;color:#93A2A9;margin-top:auto;padding-top:8px;}
.list-empty{
  background:var(--surface);border:1px dashed var(--line);border-radius:14px;
  padding:34px 24px;text-align:center;color:var(--muted);font-size:14.5px;
}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:12px;max-width:920px;}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:0 24px;transition:border-color .25s,box-shadow .25s;}
.faq-item summary{
  cursor:pointer;list-style:none;padding:18px 0;font-size:15.5px;font-weight:700;color:var(--ink);
  display:flex;align-items:center;justify-content:space-between;gap:18px;line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;font-size:12px;
  color:var(--gold-deep);transition:transform .25s ease;flex:0 0 auto;
}
.faq-item[open]{border-color:rgba(201,164,91,.45);box-shadow:var(--shadow-sm);}
.faq-item[open] summary::after{transform:rotate(180deg);}
.faq-a{padding:0 0 20px;margin:0;font-size:14.5px;color:var(--muted);line-height:1.95;}

/* ============ 风险提示 ============ */
.risk-bar{
  display:grid;grid-template-columns:56px minmax(0,1fr);gap:20px;align-items:start;
  background:#FBF6EA;border:1px solid rgba(201,164,91,.42);border-radius:16px;
  padding:26px 28px;
}
.risk-icon{
  width:52px;height:52px;border-radius:14px;display:grid;place-items:center;
  background:linear-gradient(140deg,#E2C68C,#B98F45);color:#10222B;font-size:20px;
}
.risk-bar h3{margin:0 0 8px;font-size:16px;font-weight:800;color:#6E5316;}
.risk-bar p{margin:0;font-size:14.5px;color:#7A6634;line-height:1.95;}

/* ============ 下载 ============ */
.dl-box{
  background:linear-gradient(150deg,#0A1C26,#123340 62%,#091B23);
  border-radius:24px;padding:48px 42px;
  box-shadow:var(--shadow-lg);
  position:relative;overflow:hidden;
}
.dl-box::after{
  content:"";position:absolute;right:-120px;top:-120px;width:380px;height:380px;border-radius:50%;
  background:radial-gradient(circle,rgba(201,164,91,.22),transparent 66%);pointer-events:none;
}
.dl-head{position:relative;z-index:2;max-width:720px;margin-bottom:32px;}
.dl-head h2{margin:0 0 12px;font-size:clamp(22px,2.6vw,30px);font-weight:800;color:#fff;letter-spacing:.5px;}
.dl-head p{margin:0;font-size:15px;color:rgba(255,255,255,.70);line-height:1.95;}
.dl-grid{position:relative;z-index:2;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;}
.dl-btn{
  display:flex;align-items:center;gap:14px;min-width:0;
  padding:20px 22px;border-radius:16px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.20);
  color:#fff;transition:transform .26s ease,background .26s ease,border-color .26s ease,box-shadow .26s ease;
}
.dl-btn i{font-size:22px;color:var(--gold-2);flex:0 0 auto;}
.dl-btn .dl-txt{min-width:0;}
.dl-btn strong{display:block;font-size:15.5px;font-weight:800;letter-spacing:.5px;}
.dl-btn small{display:block;font-size:12.5px;color:rgba(255,255,255,.55);margin-top:3px;}
.dl-btn:hover{transform:translateY(-3px);background:rgba(201,164,91,.16);border-color:rgba(201,164,91,.60);box-shadow:0 16px 32px rgba(4,14,20,.40);}
.dl-btn:focus-visible{outline:2px solid var(--gold-2);outline-offset:3px;}
.dl-note{position:relative;z-index:2;margin:22px 0 0;font-size:13px;color:rgba(255,255,255,.50);line-height:1.8;}

/* ============ 页脚 ============ */
.site-footer{
  background:#08171F;color:rgba(255,255,255,.66);
  padding:64px 0 26px;border-top:1px solid rgba(201,164,91,.22);
}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr;gap:42px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:17px;margin-bottom:14px;}
.footer-about p{margin:0;font-size:14px;line-height:1.95;color:rgba(255,255,255,.62);max-width:520px;}
.footer-col h3,.footer-friend h3{font-size:14.5px;color:#fff;margin:0 0 14px;letter-spacing:1px;font-weight:700;}
.footer-col ul{list-style:none;margin:0;padding:0;display:grid;gap:9px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.66);}
.footer-col a:hover{color:var(--gold-2);}
.footer-friend{margin-top:38px;padding-top:24px;border-top:1px solid rgba(255,255,255,.10);}
.friend-links{display:flex;flex-wrap:wrap;gap:10px 20px;font-size:14px;}
.friend-links a{color:rgba(255,255,255,.62);}
.friend-links a:hover{color:var(--gold-2);}
.footer-bottom{
  margin-top:26px;padding-top:20px;border-top:1px solid rgba(255,255,255,.10);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.45);
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .hero-layout{grid-template-columns:1fr;gap:40px;}
  .hero-panel{max-width:560px;}
  .num-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .flow-grid{grid-template-columns:repeat(3,minmax(0,1fr));}
  .post-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .calc-layout{grid-template-columns:1fr;gap:32px;}
  .dl-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .footer-about{grid-column:1 / -1;}
}
@media (max-width:900px){
  .nav-links{display:none;}
  .nav-actions{display:flex;}
  .nav-toggle{display:inline-flex;}
}
@media (max-width:768px){
  .site-container{padding:0 18px;}
  .section{padding:64px 0;}
  .section--tight{padding:50px 0;}
  .hero-cat{padding:128px 0 66px;}
  .hero-points{grid-template-columns:1fr;}
  .num-grid{grid-template-columns:1fr;}
  .flow-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px 18px;}
  .check-grid{grid-template-columns:1fr;}
  .post-grid{grid-template-columns:1fr;}
  .scene-item{grid-template-columns:1fr;gap:10px;padding:22px;}
  .scene-num{font-size:22px;}
  .dl-box{padding:34px 22px;border-radius:20px;}
  .dl-grid{grid-template-columns:1fr;}
  .risk-bar{grid-template-columns:1fr;gap:14px;padding:22px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:6px;}
}
@media (max-width:520px){
  .hero-cat h1{font-size:24px;}
  .hero-actions .btn{width:100%;}
  .flow-grid{grid-template-columns:1fr;}
  .section-head{margin-bottom:32px;}
  .brand-sub{display:none;}
}