/* roulang page: index */
:root{
  --brand:#2563eb;
  --brand-600:#1d4ed8;
  --brand-700:#1e40af;
  --brand-soft:#eef4ff;
  --brand-line:#d9e5ff;
  --ink:#0b1220;
  --ink-2:#1e293b;
  --text:#3f4a5f;
  --muted:#6b7891;
  --line:#e5eaf3;
  --bg:#f6f8fc;
  --white:#ffffff;
  --gold:#f59e0b;
  --green:#10b981;
  --cyan:#06b6d4;
  --r-xs:8px;
  --r-sm:12px;
  --r-md:16px;
  --r-lg:22px;
  --r-xl:28px;
  --sh-xs:0 1px 3px rgba(11,18,32,.06);
  --sh-sm:0 6px 16px rgba(11,18,32,.06);
  --sh-md:0 14px 34px rgba(11,18,32,.09);
  --sh-lg:0 28px 64px rgba(11,18,32,.14);
  --ease:cubic-bezier(.22,.61,.36,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{margin:0;padding:0;list-style:none}
p{margin:0}
h1,h2,h3,h4{margin:0;color:var(--ink);line-height:1.28;letter-spacing:-.015em;font-weight:800}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:3px solid rgba(37,99,235,.45);outline-offset:2px;border-radius:8px}
::selection{background:var(--brand);color:#fff}

.wrap{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:80px 0}
.section-tight{padding:56px 0}
.section-alt{background:var(--white)}
.sec-head{max-width:760px;margin-bottom:40px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--brand-700);background:var(--brand-soft);
  border:1px solid var(--brand-line);border-radius:999px;
  padding:6px 14px;margin-bottom:16px;
}
.sec-title{font-size:clamp(24px,3vw,36px)}
.sec-desc{margin-top:14px;font-size:16px;color:var(--muted);line-height:1.85}

/* Header / Nav */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;gap:22px;height:74px}
.logo{display:flex;align-items:center;gap:11px;font-weight:800;font-size:19px;color:var(--ink);flex-shrink:0}
.logo-mark{
  width:38px;height:38px;border-radius:12px;
  background:linear-gradient(135deg,var(--brand) 10%,var(--cyan) 100%);
  display:grid;place-items:center;color:#fff;font-size:16px;
  box-shadow:0 10px 22px rgba(37,99,235,.32);
}
.logo-text small{display:block;font-size:11px;font-weight:600;color:var(--muted);letter-spacing:.14em;line-height:1}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{
  padding:9px 15px;border-radius:999px;font-size:15px;font-weight:600;color:var(--ink-2);
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease);
}
.nav-links a:hover{background:var(--brand-soft);color:var(--brand-700)}
.nav-links a.active{background:var(--brand);color:#fff;box-shadow:0 10px 20px rgba(37,99,235,.26)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px}
.search{
  display:flex;align-items:center;gap:9px;min-width:220px;
  background:#f2f6fd;border:1px solid var(--line);border-radius:999px;padding:9px 15px;
  transition:border-color .22s,box-shadow .22s,background .22s;
}
.search i{color:var(--muted);font-size:13px}
.search input{border:0;background:transparent;outline:none;width:100%;font-size:14px;color:var(--ink-2)}
.search input::placeholder{color:#9aa6bd}
.search:focus-within{border-color:var(--brand);background:#fff;box-shadow:0 0 0 4px rgba(37,99,235,.13)}
.nav-toggle{display:none;background:#fff;border:1px solid var(--line);border-radius:12px;width:42px;height:42px;align-items:center;justify-content:center;cursor:pointer;color:var(--ink)}
.mobile-menu{display:none;border-top:1px solid var(--line);background:#fff;padding:14px 24px 20px}
.mobile-menu a{display:block;padding:12px 14px;border-radius:12px;font-weight:600;color:var(--ink-2)}
.mobile-menu a:hover,.mobile-menu a.active{background:var(--brand-soft);color:var(--brand-700)}
.mobile-menu.open{display:block}

/* Buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 24px;border-radius:999px;font-weight:700;font-size:15px;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s,color .22s,border-color .22s;
}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 12px 26px rgba(37,99,235,.28)}
.btn-primary:hover{background:var(--brand-600);transform:translateY(-2px);box-shadow:0 18px 34px rgba(37,99,235,.34)}
.btn-primary:active{transform:translateY(0)}
.btn-gold{background:linear-gradient(135deg,#fbbf24,#f59e0b);color:#40260a;box-shadow:0 12px 26px rgba(245,158,11,.32)}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 18px 34px rgba(245,158,11,.4)}
.btn-light{background:#fff;color:var(--brand-700);border-color:var(--line);box-shadow:var(--sh-xs)}
.btn-light:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);box-shadow:var(--sh-sm)}
.btn-ghost{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.3)}
.btn-ghost:hover{background:rgba(255,255,255,.18);transform:translateY(-2px)}

/* Badges */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;font-size:12.5px;font-weight:700;
  background:var(--brand-soft);color:var(--brand-700);border:1px solid var(--brand-line);
}
.badge-gold{background:#fff7e6;color:#a16207;border-color:#fde3b0}
.badge-green{background:#e9fbf3;color:#047857;border-color:#bfeeda}
.badge-slate{background:#f1f5fb;color:#475569;border-color:#e2e8f2}

/* Hero */
.hero{
  position:relative;overflow:hidden;color:#dbe4f5;
  background:radial-gradient(120% 130% at 10% 4%,#1e3a8a 0%,#0b1220 52%,#05070d 100%);
  padding:66px 0 78px;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.07) 1px,transparent 1px);
  background-size:24px 24px;opacity:.45;
}
.hero-glow{
  position:absolute;width:560px;height:560px;right:-140px;top:-190px;border-radius:50%;
  background:radial-gradient(circle,rgba(37,99,235,.55),transparent 66%);
  filter:blur(6px);pointer-events:none;
}
.hero-glow-2{
  position:absolute;width:420px;height:420px;left:-160px;bottom:-220px;border-radius:50%;
  background:radial-gradient(circle,rgba(6,182,212,.32),transparent 68%);pointer-events:none;
}
.hero-grid{
  position:relative;z-index:2;display:grid;grid-template-columns:1.06fr .94fr;
  gap:52px;align-items:center;
}
.hero h1{color:#fff;font-size:clamp(28px,3.6vw,44px);line-height:1.24;margin-top:18px}
.hero h1 span{color:#7dd3fc}
.hero-lead{margin-top:18px;font-size:17px;color:#a9b8d4;font-weight:600}
.hero-copy{margin-top:14px;font-size:15.5px;line-height:1.9;color:#93a3c2}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-stats{display:flex;flex-wrap:wrap;gap:34px;margin-top:36px;padding-top:26px;border-top:1px solid rgba(255,255,255,.12)}
.hero-stats b{display:block;font-size:23px;color:#fff;font-weight:800}
.hero-stats span{font-size:13px;color:#8b9ab8}
.heat-chip{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(245,158,11,.16);border:1px solid rgba(245,158,11,.42);
  color:#fbbf24;border-radius:999px;padding:6px 14px;font-size:13px;font-weight:700;
}
.poster-stage{position:relative}
.poster{
  position:relative;border-radius:var(--r-xl);overflow:hidden;
  border:1px solid rgba(255,255,255,.14);
  background:linear-gradient(155deg,#1d4ed8 0%,#132a63 45%,#080d18 100%);
  box-shadow:0 44px 90px rgba(0,0,0,.55);
  padding:30px 28px 26px;min-height:340px;
  display:flex;flex-direction:column;justify-content:space-between;
}
.poster::before{
  content:"";position:absolute;right:-70px;top:-70px;width:240px;height:240px;border-radius:50%;
  background:radial-gradient(circle,rgba(125,211,252,.45),transparent 68%);
}
.poster::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:44%;
  background:linear-gradient(180deg,transparent,rgba(5,8,16,.85));
}
.poster-tag{position:relative;z-index:2;display:flex;gap:8px;flex-wrap:wrap}
.poster-tag span{
  font-size:12px;font-weight:700;color:#dbeafe;background:rgba(255,255,255,.13);
  border:1px solid rgba(255,255,255,.22);border-radius:999px;padding:5px 12px;
}
.poster-title{position:relative;z-index:2;margin-top:auto}
.poster-title h3{color:#fff;font-size:22px;line-height:1.4}
.poster-title p{margin-top:8px;color:#a9bddc;font-size:13.5px}
.poster-meta{
  position:relative;z-index:2;display:flex;justify-content:space-between;align-items:flex-end;
  gap:16px;margin-top:22px;
}
.poster-meta b{display:block;color:#fff;font-size:19px;font-weight:800}
.poster-meta i{font-size:12px;color:#8ea3c6;font-style:normal}
.poster-rail{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:16px}
.rail-card{
  border-radius:var(--r-md);overflow:hidden;border:1px solid rgba(255,255,255,.12);
  background:linear-gradient(160deg,rgba(37,99,235,.35),rgba(8,13,24,.9));
  padding:14px 12px;transition:transform .25s var(--ease),border-color .25s;
}
.rail-card:hover{transform:translateY(-4px);border-color:rgba(125,211,252,.6)}
.rail-card b{display:block;color:#e6eefc;font-size:13px;font-weight:700}
.rail-card span{display:block;margin-top:5px;font-size:11.5px;color:#8fa3c4}

/* Cards */
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px;box-shadow:var(--sh-sm);
  transition:transform .26s var(--ease),box-shadow .26s var(--ease),border-color .26s;
}
.card:hover{transform:translateY(-5px);box-shadow:var(--sh-md);border-color:#c9d9f7}
.card h3{font-size:17.5px;margin-bottom:10px}
.card p{font-size:14.5px;color:var(--muted);line-height:1.8}
.card-icon{
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand);font-size:18px;margin-bottom:16px;
}
.card-num{
  font-size:13px;font-weight:800;color:var(--brand);letter-spacing:.06em;margin-bottom:12px;
  display:block;
}

/* KPI board */
.kpi-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.kpi{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px 22px;box-shadow:var(--sh-xs);position:relative;overflow:hidden;
}
.kpi::after{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--brand);opacity:.85}
.kpi b{display:block;font-size:30px;font-weight:800;color:var(--ink);letter-spacing:-.02em}
.kpi span{display:block;margin-top:6px;font-size:13.5px;color:var(--muted)}
.kpi em{
  display:inline-flex;margin-top:12px;font-style:normal;font-size:12px;font-weight:700;
  color:#047857;background:#e9fbf3;border-radius:999px;padding:3px 10px;
}

/* Material cards */
.mat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.mat{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  box-shadow:var(--sh-sm);transition:transform .26s var(--ease),box-shadow .26s var(--ease);
}
.mat:hover{transform:translateY(-6px);box-shadow:var(--sh-md)}
.mat-cover{height:132px;position:relative;display:flex;align-items:flex-end;padding:14px}
.mat-cover span{position:relative;z-index:2;color:#fff;font-size:12px;font-weight:700;background:rgba(6,12,24,.5);border-radius:999px;padding:4px 11px;backdrop-filter:blur(4px)}
.c1{background:linear-gradient(135deg,#2563eb,#06b6d4)}
.c2{background:linear-gradient(135deg,#1e40af,#7c3aed)}
.c3{background:linear-gradient(135deg,#0f766e,#22d3ee)}
.c4{background:linear-gradient(135deg,#b45309,#f59e0b)}
.c5{background:linear-gradient(135deg,#be123c,#fb7185)}
.c6{background:linear-gradient(135deg,#334155,#64748b)}
.mat-body{padding:20px}
.mat-body h3{font-size:16px;margin-bottom:8px}
.mat-body p{font-size:14px;color:var(--muted);line-height:1.75}
.mat-foot{display:flex;align-items:center;justify-content:space-between;margin-top:16px;padding-top:14px;border-top:1px dashed var(--line)}
.mat-foot small{font-size:12.5px;color:#8c98b0}

/* Compare */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.compare-col{border-radius:var(--r-lg);padding:28px;border:1px solid var(--line);background:#fff;box-shadow:var(--sh-xs)}
.compare-col.old{background:#f8fafc}
.compare-col.new{border-color:var(--brand-line);background:linear-gradient(180deg,#f5f9ff,#fff);box-shadow:var(--sh-sm)}
.compare-col h3{font-size:18px;margin-bottom:18px;display:flex;align-items:center;gap:10px}
.compare-col ul li{
  display:flex;gap:11px;align-items:flex-start;font-size:14.5px;
  padding:11px 0;border-bottom:1px dashed var(--line);color:var(--text);
}
.compare-col ul li:last-child{border-bottom:0}
.compare-col ul li i{margin-top:5px;font-size:13px}
.old li i{color:#94a3b8}
.new li i{color:var(--green)}

/* Steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;counter-reset:step}
.step{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:26px 22px;box-shadow:var(--sh-xs);transition:transform .26s var(--ease),box-shadow .26s var(--ease)}
.step:hover{transform:translateY(-5px);box-shadow:var(--sh-md)}
.step-num{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  background:var(--brand);color:#fff;font-weight:800;font-size:15px;margin-bottom:16px;
  box-shadow:0 10px 20px rgba(37,99,235,.26);
}
.step h3{font-size:16.5px;margin-bottom:9px}
.step p{font-size:14px;color:var(--muted);line-height:1.78}

/* Timeline */
.timeline{position:relative;padding-left:30px}
.timeline::before{content:"";position:absolute;left:8px;top:6px;bottom:6px;width:2px;background:linear-gradient(180deg,var(--brand),#dbe6ff)}
.tl-item{position:relative;padding:0 0 30px 24px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-30px;top:6px;width:14px;height:14px;border-radius:50%;
  background:#fff;border:3px solid var(--brand);box-shadow:0 0 0 4px rgba(37,99,235,.12);
}
.tl-item h3{font-size:16.5px;margin-bottom:8px}
.tl-item p{font-size:14.5px;color:var(--muted);line-height:1.8}
.tl-item .badge{margin-bottom:10px}

/* Cases */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.case{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:26px;box-shadow:var(--sh-sm);display:flex;flex-direction:column;transition:transform .26s var(--ease),box-shadow .26s var(--ease)}
.case:hover{transform:translateY(-6px);box-shadow:var(--sh-md)}
.case-quote{font-size:14.8px;color:var(--ink-2);line-height:1.85;flex:1}
.case-quote::before{content:"“";font-size:30px;color:var(--brand);line-height:0;vertical-align:-8px;margin-right:4px}
.case-meta{display:flex;align-items:center;gap:12px;margin-top:20px;padding-top:18px;border-top:1px solid var(--line)}
.avatar{width:42px;height:42px;border-radius:50%;display:grid;place-items:center;font-weight:800;color:#fff;background:linear-gradient(135deg,#2563eb,#06b6d4);font-size:15px}
.case-meta b{display:block;font-size:14.5px;color:var(--ink)}
.case-meta span{font-size:12.5px;color:var(--muted)}
.case-kpi{margin-top:14px;display:flex;gap:16px}
.case-kpi div b{display:block;font-size:17px;color:var(--brand-700)}
.case-kpi div span{font-size:12px;color:var(--muted)}

/* News list */
.news-list{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-sm)}
.news-row{display:grid;grid-template-columns:118px 1fr 130px;gap:20px;align-items:center;padding:20px 26px;border-bottom:1px solid var(--line);transition:background .22s}
.news-row:last-child{border-bottom:0}
.news-row:hover{background:#f7faff}
.news-row .tag{font-size:12.5px;font-weight:700;color:var(--brand-700);background:var(--brand-soft);border-radius:999px;padding:5px 12px;text-align:center}
.news-row b{display:block;font-size:15.5px;color:var(--ink)}
.news-row p{font-size:13.5px;color:var(--muted);margin-top:4px}
.news-row .status{font-size:13px;font-weight:700;text-align:right}
.st-done{color:#047857}
.st-run{color:var(--brand-700)}
.st-wait{color:#b45309}

/* Guarantee */
.guard-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.guard{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:24px 22px;box-shadow:var(--sh-xs);transition:transform .26s var(--ease),box-shadow .26s var(--ease)}
.guard:hover{transform:translateY(-4px);box-shadow:var(--sh-sm)}
.guard i{font-size:20px;color:var(--brand);margin-bottom:14px;display:block}
.guard h3{font-size:16px;margin-bottom:9px}
.guard p{font-size:14px;color:var(--muted);line-height:1.78}

/* FAQ */
.faq-wrap{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.faq{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:20px 24px;box-shadow:var(--sh-xs);transition:border-color .22s,box-shadow .22s}
.faq[open]{border-color:var(--brand-line);box-shadow:var(--sh-sm)}
.faq summary{list-style:none;cursor:pointer;font-weight:700;color:var(--ink);font-size:15.5px;display:flex;justify-content:space-between;gap:14px;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:20px;color:var(--brand);font-weight:700;transition:transform .22s}
.faq[open] summary::after{transform:rotate(45deg)}
.faq p{margin-top:14px;font-size:14.5px;color:var(--muted);line-height:1.85}

/* Join */
.join{background:linear-gradient(135deg,#0b1220,#1e3a8a 78%,#1d4ed8 130%);border-radius:var(--r-xl);padding:46px;color:#c9d6f0;position:relative;overflow:hidden}
.join::after{content:"";position:absolute;right:-80px;bottom:-120px;width:340px;height:340px;border-radius:50%;background:radial-gradient(circle,rgba(125,211,252,.3),transparent 66%)}
.join-grid{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
.join h2{color:#fff;font-size:clamp(22px,2.6vw,30px)}
.join p{margin-top:14px;font-size:15px;line-height:1.9;color:#a9b8d4}
.form-card{background:rgba(255,255,255,.97);border-radius:var(--r-lg);padding:26px;box-shadow:var(--sh-lg)}
.field{margin-bottom:14px}
.field label{display:block;font-size:13px;font-weight:700;color:var(--ink-2);margin-bottom:7px}
.field input,.field select{
  width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:var(--r-sm);
  background:#f8fafd;font-size:14.5px;outline:none;transition:border-color .2s,box-shadow .2s,background .2s;
}
.field input:focus,.field select:focus{border-color:var(--brand);background:#fff;box-shadow:0 0 0 4px rgba(37,99,235,.13)}
.form-note{font-size:12.5px;color:var(--muted);margin-top:10px;text-align:center}
.form-ok{display:none;margin-top:12px;font-size:13.5px;font-weight:700;color:#047857;background:#e9fbf3;border:1px solid #bfeeda;border-radius:var(--r-sm);padding:10px 14px}

/* Footer */
.site-footer{background:#080d18;color:#8d9cb8;padding:56px 0 26px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:700}
.site-footer p{font-size:14px;line-height:1.85;color:#8d9cb8}
.site-footer a{font-size:14px;color:#a9b8d4;display:inline-block;padding:5px 0;transition:color .2s,transform .2s}
.site-footer a:hover{color:#fff;transform:translateX(3px)}
.footer-logo{display:flex;align-items:center;gap:11px;margin-bottom:16px}
.footer-logo .logo-mark{box-shadow:none}
.footer-logo b{color:#fff;font-size:17px}
.footer-bottom{
  margin-top:40px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:#6e7d99;
}

/* Responsive */
@media (max-width:1080px){
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .kpi-grid{grid-template-columns:repeat(2,1fr)}
  .mat-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .guard-grid{grid-template-columns:repeat(2,1fr)}
  .case-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .join-grid{grid-template-columns:1fr;gap:30px}
}
@media (max-width:900px){
  .nav-links,.search{display:none}
  .nav-toggle{display:flex}
  .compare{grid-template-columns:1fr}
  .faq-wrap{grid-template-columns:1fr}
  .news-row{grid-template-columns:100px 1fr;row-gap:8px}
  .news-row .status{grid-column:2;text-align:left}
}
@media (max-width:640px){
  .section{padding:56px 0}
  .wrap{padding:0 18px}
  .hero{padding:44px 0 54px}
  .kpi-grid,.mat-grid,.steps,.guard-grid,.case-grid{grid-template-columns:1fr}
  .hero-stats{gap:22px}
  .poster-rail{grid-template-columns:1fr 1fr}
  .join{padding:28px 22px}
  .footer-grid{grid-template-columns:1fr}
  .btn{width:100%}
  .hero-actions .btn,.form-card .btn{width:100%}
}

/* roulang page: category1 */
:root{
 --brand:#2563eb;
 --brand-600:#1d4ed8;
 --brand-700:#1e40af;
 --brand-soft:#eef4ff;
 --brand-line:#d9e5ff;
 --ink:#0b1220;
 --ink-2:#1e293b;
 --text:#3f4a5f;
 --muted:#6b7891;
 --line:#e5eaf3;
 --bg:#f6f8fc;
 --white:#ffffff;
 --gold:#f59e0b;
 --green:#10b981;
 --cyan:#06b6d4;
 --r-xs:8px;
 --r-sm:12px;
 --r-md:16px;
 --r-lg:22px;
 --r-xl:28px;
 --sh-xs:0 1px 3px rgba(11,18,32,.06);
 --sh-sm:0 6px 16px rgba(11,18,32,.06);
 --sh-md:0 14px 34px rgba(11,18,32,.09);
 --sh-lg:0 28px 64px rgba(11,18,32,.14);
 --ease:cubic-bezier(.22,.61,.36,1);
 --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
 margin:0;
 font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
 background:var(--bg);
 color:var(--text);
 font-size:16px;
 line-height:1.75;
 -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:800;line-height:1.35}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid rgba(37,99,235,.42);outline-offset:2px;border-radius:8px}
.wrap{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:80px 0}
.section-tight{padding:56px 0}
.section-alt{background:var(--white)}
.eyebrow{
 display:inline-flex;align-items:center;gap:8px;
 font-size:13px;font-weight:700;letter-spacing:.08em;
 color:var(--brand-700);background:var(--brand-soft);
 border:1px solid var(--brand-line);border-radius:999px;
 padding:6px 14px;margin-bottom:16px;
}
.eyebrow i{font-size:11px}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:36px}
.sec-head .lead{max-width:660px;margin-top:12px;color:var(--muted);font-size:15.5px}
.sec-title{font-size:clamp(22px,2.6vw,32px);letter-spacing:-.01em}
.sec-more{display:inline-flex;align-items:center;gap:8px;font-size:14.5px;font-weight:700;color:var(--brand-700);white-space:nowrap}
.sec-more:hover{color:var(--brand);gap:12px}
.sec-more i{transition:transform .22s var(--ease)}

/* Header / Nav */
.site-header{
 position:sticky;top:0;z-index:60;
 background:rgba(255,255,255,.94);
 backdrop-filter:blur(16px);
 border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;gap:22px;height:74px}
.logo{display:flex;align-items:center;gap:11px;font-weight:800;font-size:19px;color:var(--ink);flex-shrink:0}
.logo-mark{
 width:38px;height:38px;border-radius:12px;
 background:linear-gradient(135deg,var(--brand) 10%,var(--cyan) 100%);
 display:grid;place-items:center;color:#fff;font-size:16px;
 box-shadow:0 10px 22px rgba(37,99,235,.32);
}
.logo-text small{display:block;font-size:11px;font-weight:600;color:var(--muted);letter-spacing:.14em;line-height:1}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{
 padding:9px 15px;border-radius:999px;font-size:15px;font-weight:600;color:var(--ink-2);
 transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease);
}
.nav-links a:hover{background:var(--brand-soft);color:var(--brand-700)}
.nav-links a.active{background:var(--brand);color:#fff;box-shadow:0 10px 20px rgba(37,99,235,.26)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px}
.search{
 display:flex;align-items:center;gap:9px;min-width:220px;
 background:#f2f6fd;border:1px solid var(--line);border-radius:999px;padding:9px 15px;
 transition:border-color .22s,box-shadow .22s,background .22s;
}
.search i{color:var(--muted);font-size:13px}
.search input{border:0;background:transparent;outline:none;width:100%;font-size:14px;color:var(--ink-2)}
.search input::placeholder{color:#9aa6bd}
.search:focus-within{border-color:var(--brand);background:#fff;box-shadow:0 0 0 4px rgba(37,99,235,.13)}
.nav-toggle{display:none;background:#fff;border:1px solid var(--line);border-radius:12px;width:42px;height:42px;align-items:center;justify-content:center;cursor:pointer;color:var(--ink)}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand)}
.mobile-menu{display:none;border-top:1px solid var(--line);background:#fff;padding:14px 24px 20px}
.mobile-menu a{display:block;padding:12px 14px;border-radius:12px;font-weight:600;color:var(--ink-2)}
.mobile-menu a:hover,.mobile-menu a.active{background:var(--brand-soft);color:var(--brand-700)}
.mobile-menu.open{display:block}

/* Buttons */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:9px;
 padding:13px 24px;border-radius:999px;font-weight:700;font-size:15px;
 border:1px solid transparent;cursor:pointer;white-space:nowrap;
 transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s,color .22s,border-color .22s;
}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 12px 26px rgba(37,99,235,.28)}
.btn-primary:hover{background:var(--brand-600);transform:translateY(-2px);box-shadow:0 18px 34px rgba(37,99,235,.34)}
.btn-primary:active{transform:translateY(0)}
.btn-gold{background:linear-gradient(135deg,#fbbf24,#f59e0b);color:#40260a;box-shadow:0 12px 26px rgba(245,158,11,.32)}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 18px 34px rgba(245,158,11,.4)}
.btn-light{background:#fff;color:var(--brand-700);border-color:var(--line);box-shadow:var(--sh-xs)}
.btn-light:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);box-shadow:var(--sh-sm)}
.btn-ghost{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.3)}
.btn-ghost:hover{background:rgba(255,255,255,.18);transform:translateY(-2px)}

/* Badges */
.badge{
 display:inline-flex;align-items:center;gap:6px;
 padding:5px 12px;border-radius:999px;font-size:12.5px;font-weight:700;
 background:var(--brand-soft);color:var(--brand-700);border:1px solid var(--brand-line);
}
.badge-gold{background:#fff7e6;color:#a16207;border-color:#fde3b0}
.badge-green{background:#e9fbf3;color:#047857;border-color:#bfeeda}
.badge-slate{background:#f1f5fb;color:#475569;border-color:#e2e8f2}

/* 内页矮横幅 */
.banner{
 position:relative;overflow:hidden;
 background:linear-gradient(180deg,#eef4ff 0%,#f8fbff 62%,#ffffff 100%);
 border-bottom:1px solid var(--line);
 padding:38px 0 48px;
}
.banner::before{
 content:"";position:absolute;right:-140px;top:-190px;width:520px;height:520px;border-radius:50%;
 background:radial-gradient(circle,rgba(37,99,235,.16),transparent 68%);
}
.banner::after{
 content:"";position:absolute;left:-120px;bottom:-200px;width:380px;height:380px;border-radius:50%;
 background:radial-gradient(circle,rgba(6,182,212,.14),transparent 70%);
}
.banner-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.12fr .88fr;gap:44px;align-items:center}
.crumbs{display:flex;align-items:center;gap:9px;font-size:13.5px;color:var(--muted);margin-bottom:16px}
.crumbs i{font-size:10px;color:#a9b4c9}
.banner h1{font-size:clamp(25px,3.1vw,38px);letter-spacing:-.015em;margin-bottom:16px}
.banner h1 em{font-style:normal;color:var(--brand)}
.banner .lead{font-size:16.5px;color:var(--text);max-width:620px}
.banner-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.banner-figure{
 background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
 box-shadow:var(--sh-md);padding:22px 22px 18px;
}
.banner-figure h3{font-size:16px;margin-bottom:6px}
.banner-figure .fig-note{font-size:13.5px;color:var(--muted);margin-bottom:16px}
.mini-row{
 display:flex;align-items:center;justify-content:space-between;gap:12px;
 padding:11px 0;border-bottom:1px dashed var(--line);font-size:14.5px;
}
.mini-row:last-of-type{border-bottom:0}
.mini-row b{color:var(--ink);font-weight:700}
.mini-row span.tag{font-size:12.5px;color:var(--brand-700);background:var(--brand-soft);border-radius:999px;padding:3px 10px}
.fig-foot{margin-top:14px;padding-top:14px;border-top:1px solid var(--line);display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--muted)}

/* 指标看板 */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat-card{
 background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
 padding:24px 22px;box-shadow:var(--sh-xs);
 transition:transform .26s var(--ease),box-shadow .26s var(--ease),border-color .26s;
}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--sh-md);border-color:var(--brand-line)}
.stat-card .num{font-size:34px;font-weight:800;color:var(--ink);letter-spacing:-.02em;line-height:1.1}
.stat-card .num small{font-size:15px;font-weight:700;color:var(--brand);margin-left:4px}
.stat-card .cap{margin-top:10px;font-size:14.5px;color:var(--ink-2);font-weight:600}
.stat-card .desc{margin-top:6px;font-size:13.5px;color:var(--muted)}
.stat-icon{
 width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
 background:var(--brand-soft);color:var(--brand);font-size:16px;margin-bottom:14px;
}

/* 专题矩阵 */
.topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.topic-card{
 position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
 padding:26px 24px 24px;box-shadow:var(--sh-xs);overflow:hidden;
 transition:transform .26s var(--ease),box-shadow .26s var(--ease),border-color .26s;
}
.topic-card::before{
 content:"";position:absolute;left:0;top:0;height:3px;width:0;
 background:linear-gradient(90deg,var(--brand),var(--cyan));transition:width .32s var(--ease);
}
.topic-card:hover{transform:translateY(-5px);box-shadow:var(--sh-md);border-color:var(--brand-line)}
.topic-card:hover::before{width:100%}
.topic-card .idx{font-size:13px;font-weight:800;letter-spacing:.16em;color:#b9c4da}
.topic-card h3{font-size:18px;margin:10px 0 10px}
.topic-card p{font-size:14.5px;color:var(--muted)}
.topic-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}

/* 渠道对比表 */
.cmp-wrap{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-sm);overflow:hidden}
.cmp-scroll{overflow-x:auto}
.cmp{min-width:760px;display:grid;grid-template-columns:190px repeat(4,1fr)}
.cmp>div{padding:16px 18px;border-bottom:1px solid var(--line);font-size:14.5px}
.cmp .head{background:#f7faff;font-weight:800;color:var(--ink);font-size:15px;border-bottom:1px solid var(--brand-line)}
.cmp .rowhead{background:#fbfcff;font-weight:700;color:var(--ink-2);display:flex;align-items:center;gap:9px}
.cmp .rowhead i{color:var(--brand);font-size:13px}
.cmp .last,.cmp .last+.head{border-bottom:0}
.cmp-cell b{display:block;color:var(--ink);font-weight:700;margin-bottom:3px}
.cmp-cell span{color:var(--muted);font-size:13.5px}

/* 里程碑 */
.milestone{display:grid;grid-template-columns:repeat(5,1fr);gap:0;position:relative}
.ms-item{position:relative;padding:0 18px}
.ms-item::before{
 content:"";position:absolute;left:0;top:19px;width:calc(100% - 38px);height:2px;
 background:linear-gradient(90deg,var(--brand-line),#eef2f9);
}
.ms-item:last-child::before{display:none}
.ms-dot{
 width:38px;height:38px;border-radius:50%;display:grid;place-items:center;
 background:#fff;border:2px solid var(--brand-line);color:var(--brand-700);
 font-weight:800;font-size:14px;position:relative;z-index:2;margin-bottom:16px;
 transition:transform .26s var(--ease),border-color .26s,box-shadow .26s;
}
.ms-item:hover .ms-dot{transform:translateY(-3px);border-color:var(--brand);box-shadow:0 10px 22px rgba(37,99,235,.2)}
.ms-item h4{font-size:16px;margin-bottom:8px}
.ms-item p{font-size:14px;color:var(--muted)}

/* 资讯列表 */
.news-list{display:grid;gap:14px}
.news-item{
 display:grid;grid-template-columns:96px 1fr auto;gap:20px;align-items:center;
 background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
 padding:20px 24px;box-shadow:var(--sh-xs);
 transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s;
}
.news-item:hover{transform:translateX(4px);box-shadow:var(--sh-sm);border-color:var(--brand-line)}
.news-thumb{
 height:66px;border-radius:var(--r-sm);display:grid;place-items:center;color:#fff;font-size:19px;
 background:linear-gradient(135deg,#2563eb,#06b6d4);
}
.news-item:nth-child(2) .news-thumb{background:linear-gradient(135deg,#1d4ed8,#3b82f6)}
.news-item:nth-child(3) .news-thumb{background:linear-gradient(135deg,#0891b2,#22d3ee)}
.news-item:nth-child(4) .news-thumb{background:linear-gradient(135deg,#f59e0b,#fbbf24)}
.news-item:nth-child(5) .news-thumb{background:linear-gradient(135deg,#0f766e,#10b981)}
.news-item h4{font-size:16.5px;margin-bottom:6px}
.news-item p{font-size:14px;color:var(--muted)}
.news-meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted);margin-top:10px}
.news-arrow{width:40px;height:40px;border-radius:50%;display:grid;place-items:center;background:var(--brand-soft);color:var(--brand-700)}
.news-item:hover .news-arrow{background:var(--brand);color:#fff}

/* 平台保障 */
.guard-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.guard-card{
 background:linear-gradient(180deg,#ffffff,#fbfdff);
 border:1px solid var(--line);border-radius:var(--r-lg);
 padding:26px 22px;box-shadow:var(--sh-xs);
 transition:transform .26s var(--ease),box-shadow .26s var(--ease);
}
.guard-card:hover{transform:translateY(-4px);box-shadow:var(--sh-md)}
.guard-card i{font-size:18px;color:var(--brand)}
.guard-card h4{font-size:16.5px;margin:14px 0 8px}
.guard-card p{font-size:14px;color:var(--muted)}

/* 快速解答 */
.quick-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.qa-item{
 display:grid;grid-template-columns:44px 1fr;gap:16px;
 background:#fff;border:1px solid var(--line);border-left:3px solid var(--brand);
 border-radius:var(--r-md);padding:20px 22px;box-shadow:var(--sh-xs);
 transition:box-shadow .24s var(--ease),transform .24s var(--ease);
}
.qa-item:hover{box-shadow:var(--sh-sm);transform:translateY(-2px)}
.qa-item .qa-ico{
 width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
 background:var(--brand-soft);color:var(--brand);font-weight:800;font-size:14px;
}
.qa-item h4{font-size:15.5px;margin-bottom:6px}
.qa-item p{font-size:14px;color:var(--muted)}

/* FAQ */
.faq-list{display:grid;gap:12px;max-width:920px}
.faq-item{
 background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
 box-shadow:var(--sh-xs);overflow:hidden;transition:border-color .24s,box-shadow .24s;
}
.faq-item[open]{border-color:var(--brand-line);box-shadow:var(--sh-sm)}
.faq-item summary{
 list-style:none;cursor:pointer;padding:19px 24px;
 display:flex;align-items:center;justify-content:space-between;gap:18px;
 font-weight:700;color:var(--ink);font-size:15.5px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary i{color:var(--brand);transition:transform .26s var(--ease)}
.faq-item[open] summary i{transform:rotate(45deg)}
.faq-body{padding:0 24px 22px;color:var(--muted);font-size:14.6px}

/* 转化区 */
.join-band{
 position:relative;overflow:hidden;color:#dbe4f5;
 background:radial-gradient(120% 130% at 8% 0%,#1e3a8a 0%,#0b1220 56%,#05070d 100%);
 border-radius:var(--r-xl);padding:48px;box-shadow:var(--sh-lg);
}
.join-band::after{
 content:"";position:absolute;inset:0;pointer-events:none;
 background-image:radial-gradient(rgba(255,255,255,.06) 1px,transparent 1px);
 background-size:24px 24px;opacity:.5;
}
.join-grid{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start}
.join-band h2{color:#fff;font-size:clamp(22px,2.6vw,30px);margin-bottom:14px}
.join-band .join-lead{color:#b9c6de;font-size:15.5px;max-width:520px}
.join-points{display:grid;gap:12px;margin-top:24px}
.join-points li{display:flex;align-items:flex-start;gap:11px;font-size:14.6px;color:#c8d4e9}
.join-points i{color:#7dd3fc;margin-top:5px;font-size:13px}
.join-form{
 background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);
 border-radius:var(--r-lg);padding:26px;backdrop-filter:blur(6px);
}
.join-form h3{color:#fff;font-size:17px;margin-bottom:6px}
.join-form .form-note{font-size:13.5px;color:#a8b7d1;margin-bottom:20px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field{display:grid;gap:7px}
.field.full{grid-column:1/-1}
.field label{font-size:13.5px;font-weight:600;color:#c8d4e9}
.field input,.field select{
 width:100%;padding:12px 14px;border-radius:var(--r-sm);
 background:rgba(255,255,255,.94);border:1px solid rgba(255,255,255,.4);
 color:var(--ink-2);font-size:14.5px;outline:none;
 transition:border-color .2s,box-shadow .2s;
}
.field input::placeholder{color:#9aa6bd}
.field input:focus,.field select:focus{border-color:#7dd3fc;box-shadow:0 0 0 4px rgba(125,211,252,.22)}
.join-form .btn{width:100%;margin-top:18px}
.join-form .tip{font-size:12.8px;color:#93a3bf;margin-top:12px;text-align:center}

/* Footer */
.site-footer{background:#0b1220;color:#aab6cd;padding:58px 0 26px;margin-top:0}
.footer-grid{
 display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:34px;
 padding-bottom:34px;border-bottom:1px solid rgba(255,255,255,.09);
}
.footer-logo{display:flex;align-items:center;gap:11px;color:#fff;font-size:18px;margin-bottom:16px}
.footer-grid h4{color:#fff;font-size:15px;margin-bottom:14px;font-weight:700}
.footer-grid ul{display:grid;gap:10px}
.footer-grid li a,.footer-grid p{font-size:14.3px;color:#aab6cd}
.footer-grid li a{transition:color .2s var(--ease),padding-left .2s var(--ease)}
.footer-grid li a:hover{color:#7dd3fc;padding-left:4px}
.footer-bottom{
 display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
 padding-top:22px;font-size:13.4px;color:#71809c;
}

/* 响应式 */
@media (max-width:1024px){
 .nav-links{display:none}
 .search{display:none}
 .nav-toggle{display:flex}
 .banner-grid{grid-template-columns:1fr;gap:32px}
 .stat-grid{grid-template-columns:repeat(2,1fr)}
 .topic-grid{grid-template-columns:repeat(2,1fr)}
 .guard-grid{grid-template-columns:repeat(2,1fr)}
 .milestone{grid-template-columns:repeat(2,1fr);gap:28px}
 .ms-item{padding:0}
 .ms-item::before{display:none}
 .join-grid{grid-template-columns:1fr;gap:32px}
 .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
 .sec-head{flex-direction:column;align-items:flex-start;gap:14px}
}
@media (max-width:768px){
 .section{padding:58px 0}
 .section-tight{padding:40px 0}
 .wrap{padding:0 18px}
 .banner{padding:28px 0 38px}
 .news-item{grid-template-columns:1fr;gap:14px}
 .news-thumb{height:56px}
 .news-arrow{display:none}
 .quick-grid{grid-template-columns:1fr}
 .topic-grid{grid-template-columns:1fr}
 .stat-grid{grid-template-columns:1fr}
 .guard-grid{grid-template-columns:1fr}
 .milestone{grid-template-columns:1fr}
 .join-band{padding:30px 22px;border-radius:var(--r-lg)}
 .form-grid{grid-template-columns:1fr}
}
@media (max-width:520px){
 .nav{height:66px;gap:12px}
 .logo{font-size:17px}
 .logo-mark{width:34px;height:34px;border-radius:10px}
 .stat-card .num{font-size:28px}
 .footer-grid{grid-template-columns:1fr}
 .footer-bottom{flex-direction:column;align-items:flex-start}
 .banner-actions .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
 *{transition:none !important;animation:none !important}
 html{scroll-behavior:auto}
}

/* roulang page: category3 */
:root{
  --brand:#2563eb;
  --brand-600:#1d4ed8;
  --brand-700:#1e40af;
  --brand-soft:#eef4ff;
  --brand-line:#d9e5ff;
  --ink:#0b1220;
  --ink-2:#1e293b;
  --text:#3f4a5f;
  --muted:#6b7891;
  --line:#e5eaf3;
  --bg:#f6f8fc;
  --white:#ffffff;
  --gold:#f59e0b;
  --green:#10b981;
  --cyan:#06b6d4;
  --r-xs:8px;
  --r-sm:12px;
  --r-md:16px;
  --r-lg:22px;
  --r-xl:28px;
  --sh-xs:0 1px 3px rgba(11,18,32,.06);
  --sh-sm:0 6px 16px rgba(11,18,32,.06);
  --sh-md:0 14px 34px rgba(11,18,32,.09);
  --sh-lg:0 28px 64px rgba(11,18,32,.14);
  --ease:cubic-bezier(.22,.61,.36,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{list-style:none;margin:0;padding:0}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:800;line-height:1.3}
p{margin:0}
::selection{background:rgba(37,99,235,.18)}
:focus-visible{outline:3px solid rgba(37,99,235,.45);outline-offset:2px;border-radius:8px}
.wrap{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:80px 0}
.section-tight{padding:56px 0}
.section-alt{background:var(--white)}
.section-line{border-top:1px solid var(--line)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--brand-700);background:var(--brand-soft);
  border:1px solid var(--brand-line);border-radius:999px;
  padding:6px 14px;
}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:30px;margin-bottom:38px;flex-wrap:wrap}
.sec-head-copy{max-width:760px}
.sec-title{font-size:clamp(23px,2.7vw,33px);margin-top:14px;letter-spacing:-.01em}
.sec-desc{color:var(--muted);font-size:15.5px;margin-top:12px;max-width:660px}
.sec-aside{font-size:14px;color:var(--muted);display:flex;align-items:center;gap:10px;padding-bottom:6px}
.sec-aside i{color:var(--brand)}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;gap:22px;height:74px}
.logo{display:flex;align-items:center;gap:11px;font-weight:800;font-size:19px;color:var(--ink);flex-shrink:0}
.logo-mark{
  width:38px;height:38px;border-radius:12px;
  background:linear-gradient(135deg,var(--brand) 10%,var(--cyan) 100%);
  display:grid;place-items:center;color:#fff;font-size:16px;
  box-shadow:0 10px 22px rgba(37,99,235,.32);
}
.logo-text{display:flex;flex-direction:column;line-height:1.12}
.logo-text small{font-size:11px;font-weight:600;color:var(--muted);letter-spacing:.14em;line-height:1.4}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{
  padding:9px 15px;border-radius:999px;font-size:15px;font-weight:600;color:var(--ink-2);
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease);
}
.nav-links a:hover{background:var(--brand-soft);color:var(--brand-700);transform:translateY(-1px)}
.nav-links a.active{background:var(--brand);color:#fff;box-shadow:0 10px 20px rgba(37,99,235,.26)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px}
.search{
  display:flex;align-items:center;gap:9px;min-width:220px;
  background:#f2f6fd;border:1px solid var(--line);border-radius:999px;padding:9px 15px;
  transition:border-color .22s,box-shadow .22s,background .22s;
}
.search i{color:var(--muted);font-size:13px}
.search input{border:0;background:transparent;outline:none;width:100%;font-size:14px;color:var(--ink-2)}
.search input::placeholder{color:#9aa6bd}
.search:focus-within{border-color:var(--brand);background:#fff;box-shadow:0 0 0 4px rgba(37,99,235,.13)}
.nav-toggle{
  display:none;background:#fff;border:1px solid var(--line);border-radius:12px;
  width:42px;height:42px;align-items:center;justify-content:center;cursor:pointer;color:var(--ink);
  transition:border-color .2s,color .2s;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand)}
.mobile-menu{display:none;border-top:1px solid var(--line);background:#fff;padding:14px 24px 20px;margin:0 -24px -1px}
.mobile-menu a{display:block;padding:12px 14px;border-radius:12px;font-weight:600;color:var(--ink-2)}
.mobile-menu a:hover,.mobile-menu a.active{background:var(--brand-soft);color:var(--brand-700)}
.mobile-menu.open{display:block}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 24px;border-radius:999px;font-weight:700;font-size:15px;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s,color .22s,border-color .22s;
}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 12px 26px rgba(37,99,235,.28)}
.btn-primary:hover{background:var(--brand-600);transform:translateY(-2px);box-shadow:0 18px 34px rgba(37,99,235,.34)}
.btn-primary:active{transform:translateY(0)}
.btn-gold{background:linear-gradient(135deg,#fbbf24,#f59e0b);color:#40260a;box-shadow:0 12px 26px rgba(245,158,11,.32)}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 18px 34px rgba(245,158,11,.4)}
.btn-light{background:#fff;color:var(--brand-700);border-color:var(--line);box-shadow:var(--sh-xs)}
.btn-light:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);box-shadow:var(--sh-sm)}
.btn-ghost{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.34)}
.btn-ghost:hover{background:rgba(255,255,255,.2);transform:translateY(-2px)}

/* ---------- Badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;font-size:12.5px;font-weight:700;
  background:var(--brand-soft);color:var(--brand-700);border:1px solid var(--brand-line);
}
.badge-gold{background:#fff7e6;color:#a16207;border-color:#fde3b0}
.badge-green{background:#e9fbf3;color:#047857;border-color:#bfeeda}
.badge-slate{background:#f1f5fb;color:#475569;border-color:#e2e8f2}

/* ---------- Hero（分类页） ---------- */
.category-hero{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,#eef4ff 0%,#f6f8fc 78%,#f6f8fc 100%);
  border-bottom:1px solid var(--line);
  padding:34px 0 96px;
}
.category-hero::before{
  content:"";position:absolute;width:560px;height:560px;right:-170px;top:-240px;border-radius:50%;
  background:radial-gradient(circle,rgba(37,99,235,.16),transparent 68%);pointer-events:none;
}
.category-hero::after{
  content:"";position:absolute;width:380px;height:380px;left:-150px;bottom:-200px;border-radius:50%;
  background:radial-gradient(circle,rgba(6,182,212,.14),transparent 70%);pointer-events:none;
}
.crumb{display:flex;align-items:center;gap:9px;font-size:13.5px;color:var(--muted);margin-bottom:20px;flex-wrap:wrap}
.crumb i{font-size:10px;color:#a8b3c7}
.crumb a:hover{color:var(--brand)}
.hero-layout{position:relative;z-index:2;display:grid;grid-template-columns:1.06fr .94fr;gap:56px;align-items:center}
.hero-title{font-size:clamp(27px,3.4vw,42px);letter-spacing:-.012em;margin:16px 0 18px;max-width:660px}
.hero-title em{font-style:normal;color:var(--brand-600)}
.hero-lead{font-size:16.5px;color:var(--text);max-width:640px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px 24px;margin-top:24px;font-size:13.6px;color:var(--muted)}
.hero-meta span{display:inline-flex;align-items:center;gap:8px}
.hero-meta i{color:var(--green)}

.invite-panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-xl);
  box-shadow:var(--sh-lg);padding:28px;position:relative;
}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px dashed var(--line)}
.panel-title{font-size:16.5px;font-weight:800;color:var(--ink)}
.panel-sub{font-size:13px;color:var(--muted);margin-top:4px}
.progress-wrap{margin:22px 0 8px}
.progress-top{display:flex;align-items:baseline;justify-content:space-between;font-size:13.5px;color:var(--muted)}
.progress-top b{font-size:22px;color:var(--ink);font-weight:800;line-height:1}
.progress-track{height:12px;border-radius:999px;background:#eef2f9;overflow:hidden;margin-top:10px}
.progress-fill{height:100%;width:68%;border-radius:999px;background:linear-gradient(90deg,var(--brand),var(--cyan));box-shadow:0 4px 12px rgba(37,99,235,.35)}
.progress-note{font-size:13px;color:var(--brand-700);background:var(--brand-soft);border:1px solid var(--brand-line);border-radius:var(--r-sm);padding:9px 13px;margin-top:14px}
.tier-rows{margin-top:20px;border-top:1px solid var(--line)}
.tier-row{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:13px 0;border-bottom:1px solid var(--line);font-size:14.2px;color:var(--muted)}
.tier-row:last-child{border-bottom:0}
.tier-row b{color:var(--ink);font-size:16px;font-weight:800}
.panel-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}

/* ---------- 指标看板 ---------- */
.stats-band{margin-top:-56px;position:relative;z-index:6}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px 24px;box-shadow:var(--sh-sm);
  transition:transform .28s var(--ease),box-shadow .28s var(--ease),border-color .28s;
}
.stat-card:hover{transform:translateY(-5px);box-shadow:var(--sh-md);border-color:var(--brand-line)}
.stat-icon{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand-700);font-size:15px;margin-bottom:16px;
}
.stat-value{font-size:clamp(23px,2.3vw,29px);font-weight:800;color:var(--ink);line-height:1.2;letter-spacing:-.01em}
.stat-value small{font-size:14px;font-weight:700;color:var(--muted);margin-left:4px}
.stat-label{font-size:14.5px;font-weight:700;color:var(--ink-2);margin-top:8px}
.stat-note{font-size:13.2px;color:var(--muted);margin-top:8px}

/* ---------- 佣金阶梯矩阵 ---------- */
.tier-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.tier-card{
  position:relative;display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px 24px;box-shadow:var(--sh-xs);
  transition:transform .28s var(--ease),box-shadow .28s var(--ease),border-color .28s;
}
.tier-card:hover{transform:translateY(-6px);box-shadow:var(--sh-md);border-color:var(--brand-line)}
.tier-card.featured{
  border-color:var(--brand);background:linear-gradient(180deg,#ffffff 0%,#f6faff 100%);
  box-shadow:0 18px 40px rgba(37,99,235,.16);
}
.tier-card.featured::before{
  content:"";position:absolute;inset:0;border-radius:var(--r-lg);
  border:1px solid rgba(37,99,235,.25);pointer-events:none;
}
.tier-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:16px}
.tier-name{font-size:17px;font-weight:800;color:var(--ink)}
.tier-rate{font-size:36px;font-weight:800;color:var(--brand-700);line-height:1;letter-spacing:-.02em}
.tier-rate small{font-size:14px;font-weight:700;color:var(--muted);margin-left:2px}
.tier-cond{font-size:13.4px;color:var(--muted);margin-top:10px;padding-bottom:16px;border-bottom:1px dashed var(--line)}
.tier-list{margin-top:16px;display:grid;gap:9px;flex:1}
.tier-list li{display:flex;gap:9px;font-size:14px;color:var(--text);line-height:1.65}
.tier-list i{color:var(--brand);font-size:12px;margin-top:6px;flex-shrink:0}
.tier-foot{margin-top:20px;font-size:13px;color:var(--muted);background:#f7f9fd;border-radius:var(--r-sm);padding:10px 12px}

/* ---------- 结果对比 ---------- */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.compare-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:30px;box-shadow:var(--sh-xs)}
.compare-card.is-brand{border-color:var(--brand-line);background:linear-gradient(180deg,#f7fbff 0%,#ffffff 100%);box-shadow:var(--sh-md)}
.compare-title{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:800;color:var(--ink);margin-bottom:6px}
.compare-title span{width:34px;height:34px;border-radius:11px;display:grid;place-items:center;font-size:14px;background:#f1f5fb;color:#64748b}
.compare-card.is-brand .compare-title span{background:var(--brand);color:#fff;box-shadow:0 10px 20px rgba(37,99,235,.28)}
.compare-desc{font-size:14px;color:var(--muted);margin-bottom:20px}
.check-list{display:grid;gap:12px}
.check-list li{display:flex;gap:11px;font-size:14.6px;color:var(--text);line-height:1.7;padding:12px 14px;border-radius:var(--r-sm);background:#f8fafd}
.compare-card.is-brand .check-list li{background:#fff;border:1px solid var(--brand-line)}
.check-list i{margin-top:6px;font-size:12px;flex-shrink:0;color:#b6c1d4}
.compare-card.is-brand .check-list i{color:var(--green)}
.check-list b{color:var(--ink);font-weight:700}

/* ---------- 里程碑时间线 ---------- */
.timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;position:relative}
.timeline::before{
  content:"";position:absolute;top:38px;left:6%;right:6%;height:2px;
  background:linear-gradient(90deg,var(--brand-line),rgba(37,99,235,.35),var(--brand-line));
}
.tl-item{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:26px 22px;box-shadow:var(--sh-xs);transition:transform .28s var(--ease),box-shadow .28s var(--ease)}
.tl-item:hover{transform:translateY(-5px);box-shadow:var(--sh-md)}
.tl-dot{
  width:44px;height:44px;border-radius:14px;display:grid;place-items:center;
  background:var(--brand);color:#fff;font-weight:800;font-size:15px;
  box-shadow:0 12px 24px rgba(37,99,235,.28);margin-bottom:18px;
}
.tl-item h3{font-size:16.5px;margin-bottom:9px}
.tl-item p{font-size:14px;color:var(--muted);line-height:1.75}
.tl-tag{display:inline-block;margin-top:14px;font-size:12.5px;font-weight:700;color:var(--brand-700);background:var(--brand-soft);border:1px solid var(--brand-line);border-radius:999px;padding:4px 11px}

/* ---------- 资讯列表 ---------- */
.news-list{display:grid;gap:14px}
.news-item{
  display:grid;grid-template-columns:96px 1fr auto;gap:24px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:22px 26px;box-shadow:var(--sh-xs);
  transition:transform .28s var(--ease),box-shadow .28s var(--ease),border-color .28s;
}
.news-item:hover{transform:translateX(5px);box-shadow:var(--sh-sm);border-color:var(--brand-line)}
.news-date{
  text-align:center;font-size:12.6px;font-weight:700;color:var(--brand-700);
  background:var(--brand-soft);border:1px solid var(--brand-line);border-radius:var(--r-sm);
  padding:9px 6px;line-height:1.45;
}
.news-date b{display:block;font-size:16px;color:var(--brand-700);font-weight:800;line-height:1.3}
.news-body h3{font-size:16.5px;margin-bottom:7px}
.news-body p{font-size:14.2px;color:var(--muted);line-height:1.75}
.news-tags{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:10px}

/* ---------- 平台保障 ---------- */
.guard-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.guard-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:26px 24px;
  box-shadow:var(--sh-xs);transition:transform .28s var(--ease),box-shadow .28s var(--ease);
}
.guard-card:hover{transform:translateY(-4px);box-shadow:var(--sh-md)}
.guard-icon{
  width:44px;height:44px;border-radius:14px;display:grid;place-items:center;
  font-size:17px;margin-bottom:16px;background:var(--brand-soft);color:var(--brand-700);
}
.guard-card h3{font-size:16.5px;margin-bottom:9px}
.guard-card p{font-size:14.2px;color:var(--muted);line-height:1.75}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:920px}
.faq-list{display:grid;gap:14px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--sh-xs);overflow:hidden;transition:border-color .25s,box-shadow .25s}
.faq-item[open]{border-color:var(--brand-line);box-shadow:var(--sh-sm)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:19px 24px;font-size:16px;font-weight:700;color:var(--ink);
  display:flex;align-items:center;justify-content:space-between;gap:18px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary i{color:var(--brand);font-size:14px;transition:transform .28s var(--ease);flex-shrink:0}
.faq-item[open] summary i{transform:rotate(45deg)}
.faq-body{padding:0 24px 22px;font-size:14.8px;color:var(--text);line-height:1.85;border-top:1px dashed var(--line);padding-top:16px;margin:0 0 0}

/* ---------- 转化区 ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,#0b1220 0%,#122f6b 58%,#0b1220 100%);
  border-radius:var(--r-xl);padding:46px;color:#dbe4f5;
  display:grid;grid-template-columns:.92fr 1.08fr;gap:46px;box-shadow:var(--sh-lg);
}
.cta-band::after{
  content:"";position:absolute;width:420px;height:420px;right:-140px;top:-180px;border-radius:50%;
  background:radial-gradient(circle,rgba(37,99,235,.5),transparent 68%);pointer-events:none;
}
.cta-copy{position:relative;z-index:2}
.cta-copy h2{color:#fff;font-size:clamp(22px,2.4vw,30px);margin:14px 0 16px}
.cta-copy p{font-size:15px;color:#b7c6e2;line-height:1.85}
.cta-points{display:grid;gap:12px;margin-top:24px}
.cta-points li{display:flex;gap:11px;font-size:14.4px;color:#cfdcf3;line-height:1.7}
.cta-points i{color:#7dd3fc;font-size:12px;margin-top:6px;flex-shrink:0}
.cta-form{position:relative;z-index:2;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);border-radius:var(--r-lg);padding:28px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1 / -1}
.field label{font-size:13px;font-weight:700;color:#c3d3ef;letter-spacing:.02em}
.field input,.field select,.field textarea{
  width:100%;background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.2);
  border-radius:var(--r-sm);padding:12px 14px;color:#fff;outline:none;font-size:14.4px;
  transition:border-color .22s,background .22s,box-shadow .22s;
}
.field textarea{min-height:92px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:rgba(255,255,255,.46)}
.field select option{color:#0b1220}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:#7dd3fc;background:rgba(255,255,255,.15);box-shadow:0 0 0 4px rgba(56,189,248,.18);
}
.form-note{font-size:12.8px;color:#9db0d4;margin-top:14px;line-height:1.7}
.form-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:20px}
.form-actions span{font-size:13px;color:#9db0d4}

/* ---------- Footer ---------- */
.site-footer{background:#0b1220;color:#93a3c0;padding:62px 0 30px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.25fr;gap:36px}
.footer-logo{display:flex;align-items:center;gap:11px;color:#fff;font-size:18px;font-weight:800;margin-bottom:16px}
.site-footer p{font-size:14.4px;line-height:1.85}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:800}
.site-footer ul li{margin-bottom:10px}
.site-footer a{font-size:14.4px;color:#a9b8d3;transition:color .22s var(--ease)}
.site-footer a:hover{color:#7dd3fc}
.footer-bottom{
  margin-top:42px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13.4px;color:#7c8bab;
}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .nav-links{display:none}
  .nav-toggle{display:inline-flex}
  .hero-layout{grid-template-columns:1fr;gap:42px}
  .invite-panel{order:2}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .tier-grid{grid-template-columns:repeat(2,1fr)}
  .timeline{grid-template-columns:repeat(2,1fr)}
  .timeline::before{display:none}
  .guard-grid{grid-template-columns:repeat(2,1fr)}
  .cta-band{grid-template-columns:1fr;padding:38px 30px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:860px){
  .section{padding:64px 0}
  .section-tight{padding:48px 0}
  .compare{grid-template-columns:1fr}
  .news-item{grid-template-columns:80px 1fr;gap:18px}
  .news-item .news-tags{grid-column:1 / -1}
  .form-grid{grid-template-columns:1fr}
  .stats-band{margin-top:-38px}
}
@media (max-width:768px){
  .search{display:none}
  .nav{height:66px;gap:14px}
  .logo{font-size:17px}
  .logo-mark{width:34px;height:34px;border-radius:10px;font-size:14px}
  .category-hero{padding:24px 0 78px}
  .hero-lead{font-size:15.6px}
  .tier-grid{grid-template-columns:1fr}
  .stat-grid{grid-template-columns:1fr}
  .timeline{grid-template-columns:1fr}
  .guard-grid{grid-template-columns:1fr}
  .cta-band{padding:32px 22px;border-radius:var(--r-lg)}
  .cta-form{padding:20px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{font-size:12.8px}
}
@media (max-width:520px){
  .wrap{padding:0 18px}
  .hero-title{font-size:25px}
  .sec-title{font-size:22px}
  .hero-actions .btn,.panel-actions .btn{width:100%}
  .news-item{grid-template-columns:1fr;padding:20px}
  .news-date{text-align:left;display:flex;align-items:center;gap:10px;padding:7px 12px}
  .news-date b{display:inline;font-size:14px}
  .invite-panel{padding:22px}
  .form-actions .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}

/* roulang page: category2 */
:root{
 --brand:#2563eb;
 --brand-600:#1d4ed8;
 --brand-700:#1e40af;
 --brand-soft:#eef4ff;
 --brand-line:#d9e5ff;
 --ink:#0b1220;
 --ink-2:#1e293b;
 --text:#3f4a5f;
 --muted:#6b7891;
 --line:#e5eaf3;
 --bg:#f6f8fc;
 --white:#ffffff;
 --gold:#f59e0b;
 --green:#10b981;
 --cyan:#06b6d4;
 --r-xs:8px;
 --r-sm:12px;
 --r-md:16px;
 --r-lg:22px;
 --r-xl:28px;
 --sh-xs:0 1px 3px rgba(11,18,32,.06);
 --sh-sm:0 6px 16px rgba(11,18,32,.06);
 --sh-md:0 14px 34px rgba(11,18,32,.09);
 --sh-lg:0 28px 64px rgba(11,18,32,.14);
 --ease:cubic-bezier(.22,.61,.36,1);
 --container:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
 margin:0;
 font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
 background:var(--bg);
 color:var(--text);
 font-size:16px;
 line-height:1.75;
 -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:800;line-height:1.32}
p{margin:0}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul{margin:0;padding:0;list-style:none}
.wrap{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:76px 0}
.section-alt{background:var(--white)}
.section-tight{padding:52px 0}
.sec-head{max-width:780px;margin-bottom:38px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-title{font-size:clamp(23px,2.7vw,33px);letter-spacing:-.01em}
.sec-desc{margin-top:14px;color:var(--muted);font-size:15.5px}
.eyebrow{
 display:inline-flex;align-items:center;gap:8px;
 font-size:13px;font-weight:700;letter-spacing:.06em;
 color:var(--brand-700);background:var(--brand-soft);
 border:1px solid var(--brand-line);border-radius:999px;
 padding:6px 14px;margin-bottom:16px;
}
/* Header / Nav */
.site-header{
 position:sticky;top:0;z-index:60;
 background:rgba(255,255,255,.94);
 backdrop-filter:blur(16px);
 border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;gap:22px;height:74px}
.logo{display:flex;align-items:center;gap:11px;font-weight:800;font-size:19px;color:var(--ink);flex-shrink:0}
.logo-mark{
 width:38px;height:38px;border-radius:12px;
 background:linear-gradient(135deg,var(--brand) 10%,var(--cyan) 100%);
 display:grid;place-items:center;color:#fff;font-size:16px;
 box-shadow:0 10px 22px rgba(37,99,235,.32);
}
.logo-text small{display:block;font-size:11px;font-weight:600;color:var(--muted);letter-spacing:.14em;line-height:1}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{
 padding:9px 15px;border-radius:999px;font-size:15px;font-weight:600;color:var(--ink-2);
 transition:background .22s var(--ease),color .22s var(--ease);
}
.nav-links a:hover{background:var(--brand-soft);color:var(--brand-700)}
.nav-links a.active{background:var(--brand);color:#fff;box-shadow:0 10px 20px rgba(37,99,235,.26)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px}
.search{
 display:flex;align-items:center;gap:9px;min-width:220px;
 background:#f2f6fd;border:1px solid var(--line);border-radius:999px;padding:9px 15px;
 transition:border-color .22s,box-shadow .22s,background .22s;
}
.search i{color:var(--muted);font-size:13px}
.search input{border:0;background:transparent;outline:none;width:100%;font-size:14px;color:var(--ink-2)}
.search input::placeholder{color:#9aa6bd}
.search:focus-within{border-color:var(--brand);background:#fff;box-shadow:0 0 0 4px rgba(37,99,235,.13)}
.nav-toggle{display:none;background:#fff;border:1px solid var(--line);border-radius:12px;width:42px;height:42px;align-items:center;justify-content:center;cursor:pointer;color:var(--ink)}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand)}
.mobile-menu{display:none;border-top:1px solid var(--line);background:#fff;padding:14px 24px 20px}
.mobile-menu a{display:block;padding:12px 14px;border-radius:12px;font-weight:600;color:var(--ink-2)}
.mobile-menu a:hover,.mobile-menu a.active{background:var(--brand-soft);color:var(--brand-700)}
.mobile-menu.open{display:block}
/* Buttons */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:9px;
 padding:13px 24px;border-radius:999px;font-weight:700;font-size:15px;
 border:1px solid transparent;cursor:pointer;white-space:nowrap;
 transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s,color .22s,border-color .22s;
}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 12px 26px rgba(37,99,235,.28)}
.btn-primary:hover{background:var(--brand-600);transform:translateY(-2px);box-shadow:0 18px 34px rgba(37,99,235,.34)}
.btn-primary:active{transform:translateY(0)}
.btn-gold{background:linear-gradient(135deg,#fbbf24,#f59e0b);color:#40260a;box-shadow:0 12px 26px rgba(245,158,11,.32)}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 18px 34px rgba(245,158,11,.4)}
.btn-light{background:#fff;color:var(--brand-700);border-color:var(--line);box-shadow:var(--sh-xs)}
.btn-light:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);box-shadow:var(--sh-sm)}
.btn:focus-visible{outline:3px solid rgba(37,99,235,.35);outline-offset:2px}
/* Badges */
.badge{
 display:inline-flex;align-items:center;gap:6px;
 padding:5px 12px;border-radius:999px;font-size:12.5px;font-weight:700;
 background:var(--brand-soft);color:var(--brand-700);border:1px solid var(--brand-line);
}
.badge-gold{background:#fff7e6;color:#a16207;border-color:#fde3b0}
.badge-green{background:#e9fbf3;color:#047857;border-color:#bfeeda}
.badge-slate{background:#f1f5fb;color:#475569;border-color:#e2e8f2}
/* Page hero */
.page-hero{position:relative;overflow:hidden;background:linear-gradient(180deg,#ffffff 0%,#f1f6ff 100%);border-bottom:1px solid var(--line);padding:44px 0 56px}
.page-hero::before{
 content:"";position:absolute;width:560px;height:560px;right:-190px;top:-280px;border-radius:50%;
 background:radial-gradient(circle,rgba(37,99,235,.16),transparent 68%);pointer-events:none;
}
.page-hero::after{
 content:"";position:absolute;width:380px;height:380px;left:-150px;bottom:-220px;border-radius:50%;
 background:radial-gradient(circle,rgba(6,182,212,.14),transparent 70%);pointer-events:none;
}
.page-hero .wrap{position:relative;z-index:2}
.crumb{display:flex;align-items:center;gap:9px;font-size:13.5px;color:var(--muted);margin-bottom:20px}
.crumb a{transition:color .2s}
.crumb a:hover{color:var(--brand)}
.crumb i{font-size:10px;color:#a9b5cb}
.hero-title{font-size:clamp(26px,3.4vw,40px);letter-spacing:-.02em}
.hero-lead{margin-top:16px;max-width:760px;font-size:16.5px;color:var(--text)}
.hero-actions{margin-top:26px;display:flex;flex-wrap:wrap;gap:12px}
.icon-grid{margin-top:36px;display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:12px}
.icon-cell{
 background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
 padding:18px 12px;text-align:center;box-shadow:var(--sh-xs);
 transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.icon-cell i{font-size:19px;color:var(--brand)}
.icon-cell span{display:block;margin-top:9px;font-size:13.5px;font-weight:600;color:var(--ink-2)}
.icon-cell:hover{transform:translateY(-4px);box-shadow:var(--sh-sm);border-color:var(--brand-line)}
.status-bar{
 margin-top:26px;display:flex;flex-wrap:wrap;gap:12px 28px;align-items:center;
 background:#fff;border:1px solid var(--line);border-radius:999px;
 padding:15px 26px;box-shadow:var(--sh-xs);
}
.status-bar .st{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--ink-2)}
.status-bar .st b{color:var(--brand);font-weight:800}
.dot{width:8px;height:8px;border-radius:50%;background:var(--green);box-shadow:0 0 0 4px rgba(16,185,129,.16)}
/* Metrics */
.metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.metric{
 background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
 padding:26px 24px;box-shadow:var(--sh-sm);
 transition:transform .24s var(--ease),box-shadow .24s var(--ease);
}
.metric:hover{transform:translateY(-4px);box-shadow:var(--sh-md)}
.metric b{display:block;font-size:clamp(26px,2.7vw,34px);font-weight:800;color:var(--ink);letter-spacing:-.02em;line-height:1.15}
.metric b em{font-style:normal;font-size:15px;font-weight:700;color:var(--muted);margin-left:5px}
.metric h3{margin-top:10px;font-size:15.5px}
.metric p{margin-top:7px;font-size:13.5px;color:var(--muted)}
.metric-foot{margin-top:26px;display:flex;flex-wrap:wrap;gap:12px}
/* Matrix */
.matrix{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.mcard{
 background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
 padding:26px;box-shadow:var(--sh-xs);height:100%;
 transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.mcard:hover{transform:translateY(-5px);box-shadow:var(--sh-md);border-color:var(--brand-line)}
.mcard .ic{
 width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
 background:var(--brand-soft);color:var(--brand);font-size:18px;margin-bottom:16px;
}
.mcard h3{font-size:17.5px}
.mcard p{margin-top:10px;font-size:14.5px;color:var(--muted)}
.mcard ul{margin-top:16px;display:flex;flex-wrap:wrap;gap:8px}
.mcard ul li{
 font-size:12.5px;font-weight:600;color:var(--brand-700);
 background:#f5f9ff;border:1px solid var(--brand-line);
 border-radius:999px;padding:4px 11px;
}
/* Rank */
.rank{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-sm)}
.rank-head,.rank-row{display:grid;grid-template-columns:64px 1.7fr .7fr .7fr 108px;align-items:center;gap:16px;padding:16px 26px}
.rank-head{background:#f4f8ff;font-size:13px;font-weight:700;color:var(--muted);letter-spacing:.04em;border-bottom:1px solid var(--line)}
.rank-row{border-bottom:1px solid var(--line);transition:background .2s var(--ease)}
.rank-row:last-child{border-bottom:0}
.rank-row:hover{background:#f8faff}
.rank-no{
 width:34px;height:34px;border-radius:11px;display:grid;place-items:center;
 font-weight:800;font-size:14px;background:var(--brand-soft);color:var(--brand-700);
}
.rank-row.top .rank-no{background:linear-gradient(135deg,#fbbf24,#f59e0b);color:#40260a}
.rank-name{font-weight:700;color:var(--ink);font-size:15px}
.rank-name small{display:block;font-weight:500;font-size:12.5px;color:var(--muted);margin-top:3px}
.rank-num{font-weight:700;color:var(--ink-2);font-size:14.5px}
/* Compare + tiers */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:26px}
.cbox{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:28px;box-shadow:var(--sh-xs)}
.cbox.is-brand{border-color:var(--brand-line);background:linear-gradient(180deg,#f4f9ff,#ffffff);box-shadow:var(--sh-sm)}
.cbox h3{font-size:18px;display:flex;align-items:center;gap:10px}
.cbox h3 i{font-size:15px;color:var(--muted)}
.cbox.is-brand h3 i{color:var(--brand)}
.cbox ul{margin-top:16px}
.cbox ul li{display:flex;gap:11px;align-items:flex-start;padding:10px 0;border-bottom:1px dashed var(--line);font-size:14.5px}
.cbox ul li:last-child{border-bottom:0}
.cbox ul li i{font-size:12px;margin-top:7px;color:#b1bccf}
.cbox.is-brand ul li i{color:var(--green)}
.table-wrap{overflow-x:auto;border-radius:var(--r-md);box-shadow:var(--sh-xs);background:#fff;border:1px solid var(--line)}
.tier-table{width:100%;min-width:660px;border-collapse:collapse}
.tier-table th{background:#f4f8ff;color:var(--ink);font-size:13.5px;font-weight:700;text-align:left;padding:15px 20px;white-space:nowrap}
.tier-table td{padding:16px 20px;border-top:1px solid var(--line);font-size:14.5px;color:var(--text);white-space:nowrap}
.tier-table tbody tr{transition:background .2s var(--ease)}
.tier-table tbody tr:hover{background:#f8faff}
.tier-table .rate{font-weight:800;color:var(--brand-700);font-size:15.5px}
/* Timeline */
.timeline{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:16px}
.tl-item{
 position:relative;background:#fff;border:1px solid var(--line);
 border-radius:var(--r-md);padding:24px 20px;box-shadow:var(--sh-xs);
 transition:transform .24s var(--ease),box-shadow .24s var(--ease);
}
.tl-item:hover{transform:translateY(-4px);box-shadow:var(--sh-sm)}
.tl-no{
 width:32px;height:32px;border-radius:10px;display:grid;place-items:center;
 font-weight:800;font-size:13.5px;background:var(--brand);color:#fff;margin-bottom:14px;
 box-shadow:0 8px 18px rgba(37,99,235,.26);
}
.tl-item h3{font-size:15.5px}
.tl-item p{margin-top:8px;font-size:13.5px;color:var(--muted)}
/* News */
.news{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.news-item{
 display:flex;gap:18px;background:#fff;border:1px solid var(--line);
 border-radius:var(--r-lg);padding:24px;box-shadow:var(--sh-xs);
 transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.news-item:hover{transform:translateY(-4px);box-shadow:var(--sh-md);border-color:var(--brand-line)}
.news-date{
 flex-shrink:0;width:64px;text-align:center;border-radius:var(--r-sm);
 background:#f4f8ff;border:1px solid var(--brand-line);padding:10px 6px;
 font-size:12px;font-weight:700;color:var(--brand-700);line-height:1.4;
}
.news-date b{display:block;font-size:19px;color:var(--ink)}
.news-item h3{font-size:16.5px}
.news-item p{margin-top:8px;font-size:14px;color:var(--muted)}
/* Guarantee */
.guard{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.guard-item{
 background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
 padding:26px 24px;box-shadow:var(--sh-xs);
 transition:transform .24s var(--ease),box-shadow .24s var(--ease);
}
.guard-item:hover{transform:translateY(-4px);box-shadow:var(--sh-sm)}
.guard-item i{font-size:20px;color:var(--brand)}
.guard-item h3{margin-top:14px;font-size:16px}
.guard-item p{margin-top:9px;font-size:13.5px;color:var(--muted)}
/* FAQ */
.faq{display:grid;gap:12px;max-width:940px}
details.q{
 background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
 padding:19px 24px;box-shadow:var(--sh-xs);transition:border-color .22s,box-shadow .22s;
}
details.q:hover{border-color:var(--brand-line);box-shadow:var(--sh-sm)}
details.q summary{
 cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between;
 gap:16px;font-weight:700;color:var(--ink);font-size:15.5px;
}
details.q summary::-webkit-details-marker{display:none}
details.q summary::after{
 content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;
 font-size:12px;color:var(--brand);flex-shrink:0;transition:transform .22s var(--ease);
}
details.q[open] summary::after{content:"\f068"}
details.q p{margin-top:13px;font-size:14.5px;color:var(--muted)}
/* Join */
.join{
 background:linear-gradient(135deg,#0b1220 0%,#173a7a 58%,#1d4ed8 100%);
 border-radius:var(--r-xl);padding:48px;color:#d5e0f4;box-shadow:var(--sh-lg);
 position:relative;overflow:hidden;
}
.join::after{
 content:"";position:absolute;width:420px;height:420px;right:-140px;bottom:-220px;border-radius:50%;
 background:radial-gradient(circle,rgba(125,211,252,.28),transparent 70%);pointer-events:none;
}
.join-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center}
.join h2{color:#fff;font-size:clamp(22px,2.6vw,32px);letter-spacing:-.01em}
.join h2 + p{margin-top:14px;font-size:15.5px;color:#b9c8e4}
.join-points{margin-top:24px;display:grid;gap:12px}
.join-points li{display:flex;gap:11px;align-items:flex-start;font-size:14.5px}
.join-points i{color:#7dd3fc;font-size:13px;margin-top:7px}
.form-card{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);border-radius:var(--r-lg);padding:26px}
.join-form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.field{display:flex;flex-direction:column;gap:7px}
.field.full{grid-column:1 / -1}
.field label{font-size:13px;font-weight:600;color:#b9c8e4}
.field input,.field select{
 width:100%;padding:13px 15px;border-radius:var(--r-sm);
 border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.08);
 color:#fff;outline:none;font-size:14.5px;
 transition:border-color .2s,background .2s,box-shadow .2s;
}
.field select option{color:#0b1220}
.field input::placeholder{color:#8ea2c5}
.field input:focus,.field select:focus{border-color:#7dd3fc;background:rgba(255,255,255,.14);box-shadow:0 0 0 4px rgba(125,211,252,.18)}
.form-note{margin-top:14px;font-size:12.5px;color:#8ea2c5}
/* Footer */
.site-footer{background:#0b1220;color:#93a4c4;padding:62px 0 26px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:34px}
.footer-logo{display:flex;align-items:center;gap:11px;color:#fff;font-size:18px;font-weight:800;margin-bottom:16px}
.footer-grid p{font-size:14px;line-height:1.85}
.footer-grid h4{color:#fff;font-size:15px;margin-bottom:16px}
.footer-grid ul li{margin-bottom:10px;font-size:14px}
.footer-grid ul li a{transition:color .2s var(--ease)}
.footer-grid ul li a:hover{color:#7dd3fc}
.footer-bottom{
 margin-top:42px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
 display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
 font-size:13.5px;color:#6e7d99;
}
/* Responsive */
@media (max-width:1024px){
 .nav-links{display:none}
 .nav-toggle{display:flex}
 .icon-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
 .metrics{grid-template-columns:repeat(2,minmax(0,1fr))}
 .matrix{grid-template-columns:repeat(2,minmax(0,1fr))}
 .timeline{grid-template-columns:repeat(2,minmax(0,1fr))}
 .guard{grid-template-columns:repeat(2,minmax(0,1fr))}
 .news{grid-template-columns:1fr}
 .compare{grid-template-columns:1fr}
 .join-grid{grid-template-columns:1fr;gap:32px}
 .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:768px){
 .search{display:none}
 .section{padding:58px 0}
 .rank-head{display:none}
 .rank-row{grid-template-columns:52px 1fr auto;gap:12px;padding:16px 18px}
 .rank-row .rank-hide{display:none}
 .join{padding:32px 24px;border-radius:var(--r-lg)}
 .join-form{grid-template-columns:1fr}
}
@media (max-width:520px){
 .wrap{padding:0 18px}
 .nav{height:66px;gap:14px}
 .logo{font-size:17px}
 .logo-text small{letter-spacing:.08em}
 .icon-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 .metrics,.matrix,.timeline,.guard{grid-template-columns:1fr}
 .status-bar{border-radius:var(--r-lg);padding:16px 18px;gap:12px 18px}
 .hero-actions .btn{width:100%}
 .footer-grid{grid-template-columns:1fr;gap:26px}
 .footer-bottom{flex-direction:column}
}