/* roulang page: index */
:root{
  --brand:#2b5cff;
  --brand-600:#1f47d6;
  --brand-100:#e6edff;
  --brand-050:#f3f6ff;
  --accent:#ff7a4d;
  --accent-100:#fff1ea;
  --ink:#101a2e;
  --ink-2:#3d4a63;
  --muted:#7d8aa2;
  --line:#e3e9f4;
  --surface:#ffffff;
  --bg:#f6f8fd;
  --ok:#12a06a;
  --down:#e2564a;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:22px;
  --r-xl:32px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,26,46,.05),0 4px 14px rgba(16,26,46,.05);
  --sh-2:0 8px 28px rgba(16,26,46,.08);
  --sh-3:0 22px 52px rgba(16,26,46,.14);
  --sec:96px;
  --tr:.25s cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
h1,h2,h3,h4,h5,h6{margin:0;font-weight:700;line-height:1.35;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none;transition:color var(--tr),background var(--tr),border-color var(--tr)}
img{max-width:100%;display:block;border:0}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{
  outline:3px solid rgba(43,92,255,.35);
  outline-offset:2px;
  border-radius:6px;
}
.container{width:min(1200px,92%);margin:0 auto}

/* ============ Header ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.88);
  backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:22px;height:74px}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto}
.brand-mark{
  width:36px;height:36px;border-radius:12px;
  background:linear-gradient(140deg,#2b5cff,#4f7cff 60%,#7aa2ff);
  color:#fff;display:grid;place-items:center;font-size:16px;
  box-shadow:0 6px 16px rgba(43,92,255,.32);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text b{font-size:17px;font-weight:800;letter-spacing:-.01em}
.brand-text em{font-style:normal;font-size:11.5px;color:var(--muted);letter-spacing:.14em}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:8px}
.main-nav a{
  font-size:14.5px;font-weight:600;color:var(--ink-2);
  padding:9px 16px;border-radius:var(--r-pill);
}
.main-nav a:hover{color:var(--brand-600);background:var(--brand-050)}
.main-nav a.is-active{color:var(--brand-600);background:var(--brand-100)}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.search-box{
  display:flex;align-items:center;gap:9px;
  background:#f1f4fb;border:1px solid transparent;
  border-radius:var(--r-pill);padding:9px 16px;
  transition:border-color var(--tr),background var(--tr);
}
.search-box i{color:var(--muted);font-size:13px}
.search-box input{
  border:0;background:transparent;outline:none;
  font-size:13.5px;width:154px;color:var(--ink);
}
.search-box input::placeholder{color:#9aa6bd}
.search-box:focus-within{background:#fff;border-color:var(--brand)}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);background:#fff;color:var(--ink-2);
  place-items:center;font-size:16px;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand)}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;white-space:nowrap;
  border:1px solid transparent;cursor:pointer;
  transition:transform var(--tr),box-shadow var(--tr),background var(--tr),color var(--tr),border-color var(--tr);
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 20px rgba(43,92,255,.28)}
.btn-primary:hover{background:var(--brand-600);transform:translateY(-2px);box-shadow:0 12px 26px rgba(43,92,255,.34)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:#fff;color:var(--ink-2);border-color:var(--line)}
.btn-ghost:hover{color:var(--brand-600);border-color:#c3d3ff;box-shadow:var(--sh-1)}
.btn-light{background:#fff;color:var(--brand-600)}
.btn-light:hover{background:#f2f6ff;transform:translateY(-2px)}
.btn-sm{padding:10px 18px;font-size:13.5px}

/* ============ Pill bar ============ */
.pill-bar{background:#fff;border-bottom:1px solid var(--line);padding:14px 0}
.pill-scroll{
  display:flex;gap:10px;overflow-x:auto;
  scrollbar-width:none;-ms-overflow-style:none;
  padding-bottom:2px;
}
.pill-scroll::-webkit-scrollbar{display:none}
.pill{
  white-space:nowrap;padding:8px 17px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:#fff;
  font-size:13.5px;font-weight:600;color:var(--ink-2);
}
.pill:hover{border-color:#c3d3ff;color:var(--brand-600);background:var(--brand-050)}
.pill.is-active{background:var(--brand);border-color:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(43,92,255,.26)}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  padding:66px 0 84px;
  background:
    radial-gradient(720px 320px at 88% -10%,rgba(43,92,255,.14),transparent 70%),
    radial-gradient(520px 300px at 4% 10%,rgba(255,122,77,.10),transparent 72%),
    linear-gradient(180deg,#f2f6ff 0%,#f8faff 62%,#f6f8fd 100%);
}
.hero-grid{display:grid;grid-template-columns:1.04fr .96fr;gap:54px;align-items:center}
.badge-soft{
  display:inline-flex;align-items:center;gap:8px;
  background:#fff;border:1px solid #dbe4fb;color:var(--brand-600);
  font-size:13px;font-weight:600;padding:7px 15px;border-radius:var(--r-pill);
  box-shadow:var(--sh-1);margin-bottom:20px;
}
.badge-soft i{color:var(--accent)}
.hero h1{
  font-size:clamp(30px,4.1vw,50px);
  font-weight:800;line-height:1.2;letter-spacing:-.025em;
  margin-bottom:16px;
}
.hero h1 span{color:var(--brand)}
.hero-lead{
  font-size:clamp(16.5px,1.55vw,19px);
  font-weight:600;color:var(--ink-2);
  margin-bottom:16px;
}
.hero-text{font-size:15.5px;color:var(--ink-2);line-height:1.95;max-width:620px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin:30px 0 34px}
.hero-facts{display:flex;flex-wrap:wrap;gap:34px;border-top:1px solid var(--line);padding-top:26px}
.hero-facts li{display:flex;flex-direction:column;gap:2px}
.hero-facts strong{font-size:26px;font-weight:800;color:var(--brand);letter-spacing:-.02em;line-height:1.2}
.hero-facts span{font-size:12.5px;color:var(--muted)}

.hero-stage{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;align-items:start}
.hero-stage .reel:nth-child(2){margin-top:34px}
.hero-stage .reel:nth-child(3){margin-top:68px}
.reel{
  position:relative;border-radius:20px;overflow:hidden;
  box-shadow:var(--sh-2);background:#1b2440;
  transition:transform var(--tr),box-shadow var(--tr);
}
.reel:hover{transform:translateY(-6px);box-shadow:var(--sh-3)}
.reel-cover{
  position:relative;aspect-ratio:9/16;
  display:flex;flex-direction:column;justify-content:flex-end;
  padding:14px;color:#fff;
}
.reel-cover::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,16,34,.05) 30%,rgba(10,16,34,.72) 100%);
}
.cover-a{background:linear-gradient(155deg,#1b2a52,#2b5cff 58%,#7aa2ff)}
.cover-b{background:linear-gradient(155deg,#2a2145,#6b4bd8 58%,#b39bff)}
.cover-c{background:linear-gradient(155deg,#12333f,#0f8f9b 58%,#6fdfe0)}
.reel-tag,.reel-time{
  position:absolute;top:12px;z-index:2;
  font-size:11.5px;font-weight:600;
  background:rgba(255,255,255,.22);
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
  border-radius:var(--r-pill);padding:4px 10px;
}
.reel-tag{left:12px}
.reel-time{right:12px;background:rgba(10,16,34,.42)}
.reel-play{
  position:absolute;top:44%;left:50%;transform:translate(-50%,-50%);
  z-index:2;width:46px;height:46px;border-radius:50%;
  display:grid;place-items:center;font-size:14px;color:#fff;
  background:rgba(255,255,255,.24);
  border:1px solid rgba(255,255,255,.55);
  backdrop-filter:blur(4px);
  transition:transform var(--tr),background var(--tr);
}
.reel:hover .reel-play{transform:translate(-50%,-50%) scale(1.12);background:rgba(255,255,255,.36)}
.reel-meta{position:relative;z-index:2}
.reel-meta h3{font-size:14.5px;font-weight:700;margin-bottom:6px;color:#fff}
.reel-meta p{font-size:11.8px;line-height:1.65;color:rgba(255,255,255,.82)}

/* ============ Section base ============ */
.section{padding:var(--sec) 0}
.section-tint{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:42px}
.eyebrow{
  display:inline-flex;align-items:center;gap:7px;
  background:var(--brand-100);color:var(--brand-600);
  font-size:12.5px;font-weight:700;letter-spacing:.04em;
  padding:6px 14px;border-radius:var(--r-pill);margin-bottom:16px;
}
.section-title{font-size:clamp(23px,2.55vw,33px);font-weight:800;margin-bottom:14px;letter-spacing:-.02em}
.section-desc{font-size:15.5px;color:var(--ink-2);line-height:1.95}
.center{text-align:center;margin-left:auto;margin-right:auto}

/* ============ Stats ============ */
.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-1);
  transition:transform var(--tr),box-shadow var(--tr),border-color var(--tr);
}
.stat-card:hover{transform:translateY(-5px);box-shadow:var(--sh-2);border-color:#cfdcff}
.stat-value{font-size:33px;font-weight:800;color:var(--brand);letter-spacing:-.03em;line-height:1.15}
.stat-value small{font-size:15px;font-weight:700;margin-left:2px}
.stat-label{font-size:14px;font-weight:600;color:var(--ink);margin-top:6px}
.stat-note{font-size:12.5px;color:var(--muted);margin-top:10px;line-height:1.7}
.stat-trend{
  display:inline-flex;align-items:center;gap:5px;
  font-size:12px;font-weight:700;color:var(--ok);
  background:#e9f8f1;border-radius:var(--r-pill);padding:3px 9px;margin-top:12px;
}

/* ============ Category grid ============ */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.cat-card{
  display:block;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg);padding:24px 22px 26px;box-shadow:var(--sh-1);
  transition:transform var(--tr),box-shadow var(--tr),border-color var(--tr);
}
.cat-card:hover{transform:translateY(-5px);box-shadow:var(--sh-2);border-color:#cfdcff}
.cat-icon{
  width:46px;height:46px;border-radius:14px;
  background:var(--brand-050);color:var(--brand);
  display:grid;place-items:center;font-size:18px;margin-bottom:16px;
  transition:background var(--tr),color var(--tr);
}
.cat-card:hover .cat-icon{background:var(--brand);color:#fff}
.cat-card h3{font-size:16.5px;font-weight:700;margin-bottom:8px}
.cat-card p{font-size:13.5px;color:var(--ink-2);line-height:1.8}
.cat-tag{
  display:inline-block;margin-top:14px;font-size:11.5px;font-weight:600;
  color:var(--brand-600);background:var(--brand-100);
  border-radius:var(--r-pill);padding:4px 11px;
}
.cat-more{display:flex;justify-content:center;margin-top:38px}

/* ============ Rail (horizontal scroll) ============ */
.rail{
  display:grid;grid-auto-flow:column;grid-auto-columns:minmax(258px,296px);
  gap:20px;overflow-x:auto;padding:6px 4px 22px;
  scroll-snap-type:x mandatory;scrollbar-width:thin;
}
.rail::-webkit-scrollbar{height:8px}
.rail::-webkit-scrollbar-thumb{background:#d3dcee;border-radius:var(--r-pill)}
.rail::-webkit-scrollbar-track{background:transparent}
.rail-card{
  scroll-snap-align:start;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform var(--tr),box-shadow var(--tr);
}
.rail-card:hover{transform:translateY(-5px);box-shadow:var(--sh-2)}
.rail-cover{
  height:132px;position:relative;display:flex;align-items:flex-end;padding:14px;
}
.rail-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(12,20,42,0) 35%,rgba(12,20,42,.55) 100%)}
.rail-cover span{
  position:relative;z-index:2;font-size:11.5px;font-weight:600;color:#fff;
  background:rgba(255,255,255,.22);border-radius:var(--r-pill);padding:4px 11px;
  backdrop-filter:blur(6px);
}
.rv-1{background:linear-gradient(140deg,#22336b,#3f6dff)}
.rv-2{background:linear-gradient(140deg,#3a2456,#8659e0)}
.rv-3{background:linear-gradient(140deg,#0f3b40,#12a09b)}
.rv-4{background:linear-gradient(140deg,#5c3220,#ff7a4d)}
.rv-5{background:linear-gradient(140deg,#1d3149,#4c7fb8)}
.rail-body{padding:18px 20px 22px}
.rail-body h3{font-size:15.5px;font-weight:700;margin-bottom:8px}
.rail-body p{font-size:13px;color:var(--ink-2);line-height:1.8}
.rail-meta{
  display:flex;flex-wrap:wrap;gap:14px;margin-top:14px;
  font-size:12px;color:var(--muted);border-top:1px solid var(--line);padding-top:12px;
}
.rail-meta i{color:var(--brand);margin-right:4px}

/* ============ Rank list ============ */
.rank-list{display:grid;gap:12px}
.rank-item{
  display:grid;grid-template-columns:54px 1.5fr 1.1fr 122px 88px;
  align-items:center;gap:18px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:16px 22px;box-shadow:var(--sh-1);
  transition:transform var(--tr),box-shadow var(--tr),border-color var(--tr);
}
.rank-item:hover{transform:translateX(4px);box-shadow:var(--sh-2);border-color:#cfdcff}
.rank-no{font-size:18px;font-weight:800;color:var(--brand);letter-spacing:-.02em}
.rank-no.top{color:var(--accent)}
.rank-name{font-size:15px;font-weight:700}
.rank-cat{font-size:12.5px;color:var(--muted);margin-top:2px}
.rank-bar{height:6px;border-radius:var(--r-pill);background:var(--brand-050);overflow:hidden}
.rank-bar span{display:block;height:100%;background:linear-gradient(90deg,var(--brand),#7aa2ff);border-radius:var(--r-pill)}
.rank-val{font-size:14px;font-weight:700;color:var(--ink);text-align:right}
.rank-delta{font-size:12.5px;font-weight:700;text-align:right}
.rank-delta.up{color:var(--ok)}
.rank-delta.down{color:var(--down)}

/* ============ Promise grid ============ */
.promise-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.promise-item{
  display:flex;gap:16px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg);padding:24px;box-shadow:var(--sh-1);
  transition:transform var(--tr),box-shadow var(--tr);
}
.promise-item:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.promise-icon{
  flex:0 0 46px;height:46px;border-radius:14px;
  background:var(--brand-050);color:var(--brand);
  display:grid;place-items:center;font-size:18px;
}
.promise-item h3{font-size:15.5px;font-weight:700;margin-bottom:7px}
.promise-item p{font-size:13.5px;color:var(--ink-2);line-height:1.8}

/* ============ Steps ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step-card{
  position:relative;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg);padding:26px 22px;box-shadow:var(--sh-1);
  transition:transform var(--tr),box-shadow var(--tr),border-color var(--tr);
}
.step-card:hover{transform:translateY(-5px);box-shadow:var(--sh-2);border-color:#cfdcff}
.step-no{
  display:inline-block;font-size:12px;font-weight:800;letter-spacing:.12em;
  color:var(--brand-600);background:var(--brand-100);
  border-radius:var(--r-pill);padding:4px 12px;margin-bottom:14px;
}
.step-card h3{font-size:16.5px;font-weight:700;margin-bottom:9px}
.step-card p{font-size:13.5px;color:var(--ink-2);line-height:1.82}

/* ============ Compare ============ */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.compare-col{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px;box-shadow:var(--sh-1);
}
.compare-col--brand{
  background:linear-gradient(160deg,#f2f6ff,#ffffff 68%);
  border-color:#cfdcff;box-shadow:var(--sh-2);
}
.compare-col h3{
  font-size:17px;font-weight:800;margin-bottom:20px;
  display:flex;align-items:center;gap:10px;
}
.compare-col h3 i{color:var(--brand)}
.compare-col--plain h3 i{color:var(--muted)}
.compare-col ul{display:grid;gap:15px}
.compare-col li{display:flex;gap:12px;font-size:14px;color:var(--ink-2);line-height:1.8}
.compare-col li i{margin-top:5px;font-size:12px;color:var(--brand);flex:0 0 auto}
.compare-col--plain li i{color:#b8c2d6}

/* ============ Timeline ============ */
.timeline{max-width:860px}
.tl-item{position:relative;padding:0 0 30px 34px;border-left:2px solid var(--line)}
.tl-item:last-child{border-left-color:transparent;padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-8px;top:6px;
  width:14px;height:14px;border-radius:50%;
  background:#fff;border:3px solid var(--brand);
}
.tl-item:last-child::before{background:var(--brand);border-color:var(--brand-100)}
.tl-stage{
  display:inline-block;font-size:12px;font-weight:700;color:var(--brand-600);
  background:var(--brand-100);border-radius:var(--r-pill);padding:3px 12px;margin-bottom:10px;
}
.tl-item h3{font-size:16.5px;font-weight:700;margin-bottom:7px}
.tl-item p{font-size:14px;color:var(--ink-2);line-height:1.85}

/* ============ News list ============ */
.news-list{display:grid;gap:0;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1)}
.news-item{
  display:grid;grid-template-columns:120px 1fr;gap:20px;
  padding:22px 26px;border-bottom:1px solid var(--line);
  transition:background var(--tr);
}
.news-item:last-child{border-bottom:0}
.news-item:hover{background:var(--brand-050)}
.news-date{font-size:12.5px;color:var(--muted);font-weight:600;padding-top:3px}
.news-item h3{font-size:15.5px;font-weight:700;margin-bottom:6px}
.news-item p{font-size:13.5px;color:var(--ink-2);line-height:1.8}

/* ============ Audit / notice ============ */
.audit-list{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.audit-item{
  display:flex;gap:12px;align-items:flex-start;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:16px 18px;font-size:14px;color:var(--ink-2);line-height:1.75;
}
.audit-item i{color:var(--ok);margin-top:5px;flex:0 0 auto}
.notice{
  display:flex;gap:14px;align-items:flex-start;
  background:var(--accent-100);border:1px solid #ffd8c6;
  color:#8a3a1c;border-radius:var(--r-md);
  padding:18px 22px;margin-top:22px;font-size:14px;line-height:1.85;
}
.notice i{margin-top:5px;flex:0 0 auto}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:14px;max-width:920px}
.faq{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sh-1);overflow:hidden;transition:border-color var(--tr),box-shadow var(--tr);
}
.faq[open]{border-color:#cfdcff;box-shadow:var(--sh-2)}
.faq summary{
  list-style:none;cursor:pointer;
  padding:20px 24px;font-size:15.5px;font-weight:700;
  display:flex;justify-content:space-between;align-items:center;gap:16px;
  transition:color var(--tr);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--brand-600)}
.faq summary::after{
  content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;
  font-size:13px;color:var(--brand);flex:0 0 auto;transition:transform var(--tr);
}
.faq[open] summary::after{content:"\f068"}
.faq-body{padding:0 24px 22px;font-size:14.5px;color:var(--ink-2);line-height:1.95}

/* ============ Join / form ============ */
.join-card{
  background:linear-gradient(135deg,#12308f 0%,#2b5cff 58%,#5a83ff 100%);
  border-radius:var(--r-xl);padding:54px;
  display:grid;grid-template-columns:1fr 1fr;gap:50px;
  color:#fff;box-shadow:var(--sh-3);
}
.join-copy .eyebrow{background:rgba(255,255,255,.18);color:#fff}
.join-copy h2{font-size:clamp(22px,2.4vw,31px);font-weight:800;margin-bottom:16px;letter-spacing:-.02em}
.join-copy p{font-size:15px;line-height:1.95;color:rgba(255,255,255,.86)}
.join-facts{display:flex;flex-wrap:wrap;gap:26px;margin-top:28px}
.join-facts li{display:flex;flex-direction:column}
.join-facts strong{font-size:22px;font-weight:800}
.join-facts span{font-size:12.5px;color:rgba(255,255,255,.7)}
.form-grid{display:grid;gap:16px}
.field label{display:block;font-size:13px;font-weight:600;margin-bottom:8px;color:rgba(255,255,255,.86)}
.field input,.field select,.field textarea{
  width:100%;padding:13px 16px;border-radius:12px;
  border:1px solid rgba(255,255,255,.3);
  background:rgba(255,255,255,.13);color:#fff;font-size:14.5px;
  transition:background var(--tr),border-color var(--tr),box-shadow var(--tr);
}
.field input::placeholder,.field textarea::placeholder{color:rgba(255,255,255,.58)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;background:rgba(255,255,255,.22);border-color:#fff;
  box-shadow:0 0 0 4px rgba(255,255,255,.16);
}
.field select option{color:var(--ink);background:#fff}
.field textarea{resize:vertical;min-height:82px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-note{font-size:12.5px;color:rgba(255,255,255,.72);margin-top:14px;line-height:1.75}
.form-tip{
  display:none;margin-top:14px;font-size:13.5px;font-weight:600;
  background:rgba(255,255,255,.18);border:1px solid rgba(255,255,255,.35);
  border-radius:12px;padding:12px 16px;
}
.form-tip.is-show{display:block}

/* ============ Footer ============ */
.site-footer{background:#0d1730;color:rgba(255,255,255,.72);padding:66px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:46px}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:18px}
.footer-brand .brand-mark{box-shadow:none}
.footer-brand b{color:#fff;font-size:17px;font-weight:800}
.footer-about{font-size:13.5px;line-height:1.9;color:rgba(255,255,255,.6);max-width:320px}
.footer-col h4{color:#fff;font-size:14.5px;font-weight:700;margin-bottom:18px}
.footer-col a{display:block;font-size:13.5px;color:rgba(255,255,255,.66);padding:6px 0}
.footer-col a:hover{color:#fff;transform:translateX(2px)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:24px 0;display:flex;flex-wrap:wrap;gap:14px;
  justify-content:space-between;align-items:center;
  font-size:12.5px;color:rgba(255,255,255,.5);
}
.footer-bottom a{color:rgba(255,255,255,.66)}
.footer-bottom a:hover{color:#fff}

/* ============ Responsive ============ */
@media (max-width:1024px){
  :root{--sec:74px}
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero-text{max-width:none}
  .stat-grid,.cat-grid{grid-template-columns:repeat(2,1fr)}
  .promise-grid,.steps{grid-template-columns:repeat(2,1fr)}
  .join-card{grid-template-columns:1fr;gap:34px;padding:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .rank-item{grid-template-columns:46px 1.4fr 1fr 96px;gap:14px}
  .rank-delta{display:none}
}
@media (max-width:768px){
  .header-inner{height:66px;gap:14px}
  .main-nav{
    display:none;position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:4px;
    background:#fff;border-bottom:1px solid var(--line);
    padding:14px 4%;box-shadow:var(--sh-2);margin-left:0;
  }
  .main-nav.is-open{display:flex}
  .main-nav a{padding:12px 16px;border-radius:12px}
  .nav-toggle{display:grid}
  .search-box{display:none}
  .hero{padding:44px 0 62px}
  .hero-stage{
    grid-template-columns:repeat(3,minmax(150px,1fr));
    overflow-x:auto;padding-bottom:14px;
  }
  .hero-stage .reel:nth-child(2){margin-top:20px}
  .hero-stage .reel:nth-child(3){margin-top:40px}
  .compare{grid-template-columns:1fr}
  .audit-list{grid-template-columns:1fr}
  .news-item{grid-template-columns:1fr;gap:8px;padding:20px}
  .rank-item{grid-template-columns:40px 1fr 84px;gap:12px;padding:14px 16px}
  .rank-bar{display:none}
  .form-row{grid-template-columns:1fr}
  .join-card{padding:32px 24px;border-radius:24px}
}
@media (max-width:520px){
  .container{width:92%}
  :root{--sec:60px}
  .stat-grid,.cat-grid,.promise-grid,.steps,.footer-grid{grid-template-columns:1fr}
  .hero-facts{gap:22px}
  .hero-facts strong{font-size:22px}
  .hero-cta .btn{width:100%}
  .section-head{margin-bottom:30px}
  .brand-text em{display:none}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: category1 */
:root{
  --brand:#2b5cff;
  --brand-600:#1f47d6;
  --brand-100:#e6edff;
  --brand-050:#f3f6ff;
  --accent:#ff7a4d;
  --accent-100:#fff1ea;
  --ink:#101a2e;
  --ink-2:#3d4a63;
  --muted:#7d8aa2;
  --line:#e3e9f4;
  --surface:#ffffff;
  --bg:#f6f8fd;
  --ok:#12a06a;
  --down:#e2564a;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:22px;
  --r-xl:32px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,26,46,.05),0 4px 14px rgba(16,26,46,.05);
  --sh-2:0 8px 28px rgba(16,26,46,.08);
  --sh-3:0 22px 52px rgba(16,26,46,.14);
  --sec:78px;
  --tr:.25s cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16px;line-height:1.75;color:var(--ink);background:var(--bg);
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
}
h1,h2,h3,h4,.h1,.h2,.h3{font-family:inherit;font-weight:800;color:var(--ink);letter-spacing:-.02em}
p{margin:0}
a{color:inherit;text-decoration:none;transition:color var(--tr),background var(--tr),border-color var(--tr),box-shadow var(--tr),transform var(--tr)}
img{max-width:100%;display:block;border:0}
ul,ol{margin:0;padding:0;list-style:none}
button,input,select,textarea{font:inherit;color:inherit;margin:0}
button{background:none;border:0;cursor:pointer}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{
  outline:3px solid rgba(43,92,255,.35);outline-offset:2px;border-radius:6px;
}
.container{width:min(1200px,92%);margin:0 auto;max-width:1200px}
/* ============ Header ============ */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(255,255,255,.9);
  backdrop-filter:saturate(180%) blur(14px);-webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:22px;height:74px}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto}
.brand-mark{
  width:36px;height:36px;border-radius:12px;
  background:linear-gradient(140deg,#2b5cff,#4f7cff 60%,#7aa2ff);
  color:#fff;display:grid;place-items:center;font-size:16px;
  box-shadow:0 6px 16px rgba(43,92,255,.32);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text b{font-size:17px;font-weight:800;letter-spacing:-.01em}
.brand-text em{font-style:normal;font-size:11.5px;color:var(--muted);letter-spacing:.14em}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:8px}
.main-nav a{font-size:14.5px;font-weight:600;color:var(--ink-2);padding:9px 16px;border-radius:var(--r-pill)}
.main-nav a:hover{color:var(--brand-600);background:var(--brand-050)}
.main-nav a.is-active{color:var(--brand-600);background:var(--brand-100)}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.search-box{
  display:flex;align-items:center;gap:9px;background:#f1f4fb;border:1px solid transparent;
  border-radius:var(--r-pill);padding:9px 16px;transition:border-color var(--tr),background var(--tr);
}
.search-box i{color:var(--muted);font-size:13px}
.search-box input{border:0;background:transparent;outline:none;font-size:13.5px;width:154px;color:var(--ink);height:auto;box-shadow:none}
.search-box input:focus{box-shadow:none;background:transparent}
.search-box input::placeholder{color:#9aa6bd}
.search-box:focus-within{background:#fff;border-color:var(--brand)}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  background:#fff;color:var(--ink-2);place-items:center;font-size:16px;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand)}
/* ============ Buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--r-pill);font-size:15px;font-weight:600;white-space:nowrap;
  border:1px solid transparent;cursor:pointer;
  transition:transform var(--tr),box-shadow var(--tr),background var(--tr),color var(--tr),border-color var(--tr);
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 20px rgba(43,92,255,.28)}
.btn-primary:hover{background:var(--brand-600);transform:translateY(-2px);box-shadow:0 12px 26px rgba(43,92,255,.34)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:#fff;color:var(--ink-2);border-color:var(--line)}
.btn-ghost:hover{color:var(--brand-600);border-color:#c3d3ff;box-shadow:var(--sh-1)}
.btn-light{background:#fff;color:var(--brand-600)}
.btn-light:hover{background:#f2f6ff;transform:translateY(-2px)}
.btn-outline-light{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.35)}
.btn-outline-light:hover{background:rgba(255,255,255,.18);border-color:#fff;transform:translateY(-2px)}
.btn-sm{padding:10px 18px;font-size:13.5px}
/* ============ Pill bar ============ */
.pill-bar{background:#fff;border-bottom:1px solid var(--line);padding:14px 0}
.pill-scroll{display:flex;gap:10px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;padding-bottom:2px}
.pill-scroll::-webkit-scrollbar{display:none}
.pill{
  white-space:nowrap;padding:8px 17px;border-radius:var(--r-pill);border:1px solid var(--line);
  background:#fff;font-size:13.5px;font-weight:600;color:var(--ink-2);
}
.pill:hover{border-color:#c3d3ff;color:var(--brand-600);background:var(--brand-050)}
.pill.is-active{background:var(--brand);border-color:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(43,92,255,.26)}
/* ============ Page hero ============ */
.page-hero{position:relative;overflow:hidden;background:#0b1428;color:#fff}
.hero-media{
  position:absolute;inset:0;
  background:
    radial-gradient(620px 400px at 18% 18%,rgba(43,92,255,.55),transparent 66%),
    radial-gradient(720px 480px at 86% 74%,rgba(255,122,77,.34),transparent 70%),
    linear-gradient(135deg,#0c1730,#132a5c 55%,#0a1226);
}
.hero-media::before{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(0deg,rgba(255,255,255,.035) 0 1px,transparent 1px 54px),
                   repeating-linear-gradient(90deg,rgba(255,255,255,.035) 0 1px,transparent 1px 54px);
}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,12,26,.55) 0%,rgba(7,12,26,.78) 62%,rgba(7,12,26,.92) 100%);
}
.hero-inner{
  position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;
  gap:48px;align-items:center;padding:88px 0 78px;
}
.hero-tag{
  display:inline-flex;align-items:center;gap:9px;font-size:13px;font-weight:600;
  color:#cddcff;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.22);
  padding:7px 15px;border-radius:var(--r-pill);margin-bottom:20px;
}
.hero-tag i{color:var(--accent)}
.page-hero h1{font-size:clamp(29px,4vw,47px);line-height:1.2;color:#fff;margin:0 0 16px;font-weight:800}
.page-hero h1 span{color:#8fb2ff}
.hero-sub{font-size:clamp(16px,1.5vw,18.5px);font-weight:600;color:#dbe4fb;margin-bottom:14px;max-width:640px}
.hero-desc{font-size:15.2px;line-height:1.95;color:#a9b7d6;max-width:640px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin:30px 0 0}
.hero-meta{display:flex;flex-wrap:wrap;gap:12px 34px;margin-top:34px;padding-top:26px;border-top:1px solid rgba(255,255,255,.16)}
.hero-meta li{display:flex;flex-direction:column;gap:2px}
.hero-meta b{font-size:21px;font-weight:800;color:#fff;letter-spacing:-.02em}
.hero-meta span{font-size:12.5px;color:#9fadcc;letter-spacing:.04em}
.hero-play{display:flex;flex-direction:column;align-items:center;gap:18px;text-align:center}
.play-btn{
  position:relative;width:110px;height:110px;border-radius:50%;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.34);
  color:#fff;font-size:28px;display:grid;place-items:center;
  transition:transform var(--tr),background var(--tr),box-shadow var(--tr);
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
}
.play-btn::after{
  content:"";position:absolute;inset:-14px;border-radius:50%;
  border:1px solid rgba(143,178,255,.5);animation:pulseRing 2.6s ease-out infinite;
}
@keyframes pulseRing{0%{transform:scale(.9);opacity:.9}70%{transform:scale(1.16);opacity:0}100%{opacity:0}}
.play-btn:hover{background:rgba(255,255,255,.24);transform:scale(1.05);box-shadow:0 18px 44px rgba(0,0,0,.35)}
.play-caption b{display:block;font-size:16px;color:#fff;font-weight:700}
.play-caption span{font-size:13px;color:#a9b7d6}
.hero-panel{
  width:100%;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);
  border-radius:var(--r-lg);padding:18px 20px;text-align:left;
}
.hero-panel h4{font-size:13.5px;color:#cddcff;font-weight:700;margin:0 0 10px;letter-spacing:.06em}
.hero-panel li{display:flex;justify-content:space-between;gap:12px;font-size:13.5px;color:#c3cfe8;padding:7px 0;border-bottom:1px dashed rgba(255,255,255,.13)}
.hero-panel li:last-child{border-bottom:0}
.hero-panel li em{font-style:normal;color:#8fb2ff;font-weight:700}
/* ============ Section base ============ */
.section{padding:var(--sec) 0}
.section-alt{background:#fff}
.sec-head{max-width:760px;margin-bottom:44px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:var(--brand-600);
  background:var(--brand-050);border:1px solid #dbe4fb;padding:6px 14px;border-radius:var(--r-pill);margin-bottom:16px;
}
.eyebrow i{color:var(--accent)}
.sec-title{font-size:clamp(23px,2.7vw,34px);line-height:1.28;margin:0 0 14px}
.sec-sub{font-size:15.5px;color:var(--ink-2);line-height:1.95;margin:0}
.sec-foot{margin-top:36px;display:flex;justify-content:center}
/* ============ Stat board ============ */
.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-1);transition:transform var(--tr),box-shadow var(--tr),border-color var(--tr);
}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#cddafb}
.stat-card .k{font-size:12.5px;font-weight:700;color:var(--muted);letter-spacing:.1em;margin-bottom:12px;display:block}
.stat-card .v{font-size:34px;font-weight:800;letter-spacing:-.03em;color:var(--ink);line-height:1.1}
.stat-card .v small{font-size:14px;font-weight:700;color:var(--brand);margin-left:5px}
.stat-card .d{font-size:13.5px;color:var(--ink-2);margin-top:10px;line-height:1.75}
.stat-card .t{display:inline-flex;align-items:center;gap:5px;font-size:12.5px;font-weight:700;color:var(--ok);margin-top:14px}
.stat-note{
  margin-top:22px;display:flex;flex-wrap:wrap;gap:10px 26px;align-items:center;
  background:var(--brand-050);border:1px dashed #cddafb;border-radius:var(--r-md);padding:16px 22px;
  font-size:14px;color:var(--ink-2);
}
.stat-note i{color:var(--brand)}
/* ============ Matrix ============ */
.matrix-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.matrix-card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px 26px;box-shadow:var(--sh-1);overflow:hidden;
  transition:transform var(--tr),box-shadow var(--tr),border-color var(--tr);
}
.matrix-card::before{
  content:"";position:absolute;left:0;top:0;height:4px;width:100%;
  background:linear-gradient(90deg,var(--brand),#7aa2ff);opacity:0;transition:opacity var(--tr);
}
.matrix-card:hover{transform:translateY(-5px);box-shadow:var(--sh-2);border-color:#cddafb}
.matrix-card:hover::before{opacity:1}
.matrix-icon{
  width:48px;height:48px;border-radius:14px;display:grid;place-items:center;font-size:19px;
  background:var(--brand-100);color:var(--brand-600);margin-bottom:18px;
}
.matrix-card:nth-child(2n) .matrix-icon{background:var(--accent-100);color:#d9562b}
.matrix-card h3{font-size:17.5px;margin:0 0 10px}
.matrix-card p{font-size:14.5px;color:var(--ink-2);line-height:1.9}
.matrix-foot{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.tag{
  display:inline-flex;align-items:center;font-size:12.5px;font-weight:600;
  color:var(--ink-2);background:var(--brand-050);border:1px solid #e0e8fb;
  padding:4px 11px;border-radius:var(--r-pill);
}
.tag-accent{background:var(--accent-100);border-color:#ffdccd;color:#c94f26}
/* ============ Compare ============ */
.compare-wrap{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.compare-col{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:30px 28px;box-shadow:var(--sh-1);
}
.compare-col.is-good{border-color:#cddafb;box-shadow:var(--sh-2);position:relative}
.compare-col.is-good::after{
  content:"频道化";position:absolute;top:-11px;right:24px;background:var(--brand);color:#fff;
  font-size:12px;font-weight:700;padding:4px 12px;border-radius:var(--r-pill);letter-spacing:.06em;
}
.compare-col h3{font-size:18px;margin:0 0 8px}
.compare-col .lead{font-size:14px;color:var(--muted);margin-bottom:20px}
.compare-list li{display:flex;gap:12px;padding:12px 0;border-top:1px solid var(--line);font-size:14.5px;color:var(--ink-2);line-height:1.8}
.compare-list li:first-child{border-top:0;padding-top:0}
.compare-list i{flex:0 0 auto;margin-top:4px;font-size:13px}
.compare-list .ok{color:var(--ok)}
.compare-list .no{color:#b6c0d3}
/* ============ Timeline ============ */
.timeline{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:22px;padding-top:10px}
.timeline::before{
  content:"";position:absolute;top:24px;left:6%;right:6%;height:2px;
  background:linear-gradient(90deg,#dbe4fb,var(--brand),#dbe4fb);
}
.tl-item{position:relative;padding-top:52px}
.tl-dot{
  position:absolute;top:14px;left:50%;transform:translateX(-50%);
  width:22px;height:22px;border-radius:50%;background:#fff;border:4px solid var(--brand);
  box-shadow:0 0 0 5px rgba(43,92,255,.12);
}
.tl-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:20px 20px 22px;box-shadow:var(--sh-1);height:100%}
.tl-card b{display:block;font-size:15.5px;margin-bottom:8px}
.tl-card span{display:block;font-size:12.5px;font-weight:700;color:var(--brand-600);letter-spacing:.08em;margin-bottom:10px}
.tl-card p{font-size:14px;color:var(--ink-2);line-height:1.85}
/* ============ Feed + Rank ============ */
.feed-wrap{display:grid;grid-template-columns:1.55fr 1fr;gap:26px;align-items:start}
.feed-list{display:flex;flex-direction:column;gap:14px}
.feed-item{
  display:flex;gap:18px;align-items:flex-start;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-md);padding:22px 24px;box-shadow:var(--sh-1);
  transition:transform var(--tr),box-shadow var(--tr),border-color var(--tr);
}
.feed-item:hover{transform:translateX(4px);box-shadow:var(--sh-2);border-color:#cddafb}
.feed-time{flex:0 0 auto;font-size:12.5px;font-weight:700;color:var(--brand-600);background:var(--brand-050);border-radius:var(--r-pill);padding:5px 12px;margin-top:3px}
.feed-body{flex:1 1 auto}
.feed-body h3{font-size:16.5px;margin:0 0 8px;line-height:1.5}
.feed-body p{font-size:14.3px;color:var(--ink-2);line-height:1.85}
.feed-tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:12px}
.feed-go{flex:0 0 auto;color:#c3cddf;font-size:14px;margin-top:6px;transition:color var(--tr),transform var(--tr)}
.feed-item:hover .feed-go{color:var(--brand);transform:translateX(3px)}
.feed-more{margin-top:20px;display:flex;justify-content:flex-end}
.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-2);padding:26px 24px}
.side-card h3{font-size:17px;margin:0 0 6px}
.side-card .side-sub{font-size:13.5px;color:var(--muted);margin-bottom:20px}
.rank-item{padding:13px 0;border-top:1px solid var(--line)}
.rank-item:first-of-type{border-top:0;padding-top:0}
.rank-top{display:flex;align-items:center;gap:10px;margin-bottom:9px}
.rank-no{
  width:22px;height:22px;border-radius:8px;display:grid;place-items:center;
  font-size:12px;font-weight:800;background:var(--brand-100);color:var(--brand-600);flex:0 0 auto;
}
.rank-item:first-of-type .rank-no{background:var(--brand);color:#fff}
.rank-top b{font-size:14.5px;font-weight:700;flex:1 1 auto}
.rank-top em{font-style:normal;font-size:13px;font-weight:800;color:var(--brand-600)}
.rank-bar{height:6px;border-radius:var(--r-pill);background:#eef2fa;overflow:hidden}
.rank-bar i{display:block;height:100%;border-radius:var(--r-pill);background:linear-gradient(90deg,var(--brand),#7aa2ff)}
.side-card .btn{width:100%;margin-top:22px}
/* ============ Guard ============ */
.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-1);transition:transform var(--tr),box-shadow var(--tr);
}
.guard-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.guard-card i.ico{
  width:44px;height:44px;border-radius:13px;display:grid;place-items:center;
  font-size:17px;background:var(--brand-050);color:var(--brand-600);margin-bottom:16px;
  border:1px solid #dbe4fb;
}
.guard-card h3{font-size:16px;margin:0 0 9px}
.guard-card p{font-size:14.2px;color:var(--ink-2);line-height:1.85}
/* ============ Quick answers ============ */
.qa-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.qa-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:24px;box-shadow:var(--sh-1)}
.qa-card h3{font-size:15.5px;margin:0 0 10px;color:var(--brand-600)}
.qa-card p{font-size:14.2px;color:var(--ink-2);line-height:1.88}
/* ============ FAQ ============ */
.faq-wrap{max-width:900px;margin:0 auto}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);margin-bottom:12px;
  overflow:hidden;transition:box-shadow var(--tr),border-color var(--tr);
}
.faq-item[open]{box-shadow:var(--sh-2);border-color:#c9d7f7}
.faq-item summary{
  cursor:pointer;list-style:none;padding:18px 22px;font-weight:700;font-size:15.5px;
  display:flex;justify-content:space-between;gap:14px;align-items:center;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;color:var(--brand);
  font-size:13px;flex:0 0 auto;
}
.faq-item[open] summary::after{content:"\f068"}
.faq-body{padding:0 22px 20px;color:var(--ink-2);font-size:14.6px;line-height:1.9}
/* ============ Join ============ */
.join-section{
  background:linear-gradient(180deg,#0e1a35 0%,#132a5c 68%,#0d1830 100%);
  color:#fff;position:relative;overflow:hidden;
}
.join-section::after{
  content:"";position:absolute;right:-120px;top:-80px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(43,92,255,.45),transparent 70%);
}
.join-wrap{position:relative;z-index:2;display:grid;grid-template-columns:.95fr 1.05fr;gap:46px;align-items:center}
.join-copy h2{font-size:clamp(23px,2.7vw,34px);color:#fff;line-height:1.3;margin:0 0 16px}
.join-copy p{font-size:15.2px;color:#b3c0dc;line-height:1.95;max-width:520px}
.join-points{margin-top:24px;display:flex;flex-direction:column;gap:12px}
.join-points li{display:flex;gap:11px;font-size:14.4px;color:#cbd6ee;align-items:flex-start}
.join-points i{color:#8fb2ff;margin-top:5px;font-size:13px}
.join-form{
  background:#fff;border-radius:var(--r-lg);padding:32px 30px;box-shadow:var(--sh-3);color:var(--ink);
}
.join-form h3{font-size:19px;margin:0 0 6px}
.join-form .form-sub{font-size:13.6px;color:var(--muted);margin-bottom:22px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13.5px;font-weight:700;color:var(--ink-2);margin-bottom:8px}
.field input,.field select{
  width:100%;padding:12px 15px;border:1px solid var(--line);border-radius:var(--r-sm);
  background:#fafbff;font-size:14.5px;outline:none;height:auto;box-shadow:none;
  transition:border-color var(--tr),box-shadow var(--tr),background var(--tr);
}
.field input:focus,.field select:focus{
  border-color:var(--brand);background:#fff;box-shadow:0 0 0 4px rgba(43,92,255,.13);
}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-tip{font-size:12.8px;color:var(--muted);margin-top:14px;line-height:1.7}
.form-msg{
  display:none;margin-top:14px;font-size:13.6px;font-weight:600;color:var(--ok);
  background:#eafaf3;border:1px solid #c4ecda;border-radius:var(--r-sm);padding:11px 14px;
}
.form-msg.is-show{display:block}
/* ============ Footer ============ */
.site-footer{background:#0d1830;color:#b9c5dc;padding:70px 0 26px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:800;margin-bottom:14px}
.footer-brand .brand-mark{box-shadow:0 6px 16px rgba(43,92,255,.4)}
.footer-about{font-size:14px;line-height:1.9;color:#93a1bd;max-width:350px}
.footer-col h4{color:#fff;font-size:14.5px;font-weight:700;margin:0 0 16px}
.footer-col a{display:block;font-size:14px;color:#93a1bd;padding:5px 0}
.footer-col a:hover{color:#fff}
.footer-bottom{
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.1);margin-top:44px;padding-top:22px;
  font-size:13px;color:#7f8dab;
}
/* ============ Responsive ============ */
@media (max-width:1024px){
  :root{--sec:64px}
  .hero-inner{grid-template-columns:1fr;gap:38px;padding:72px 0 62px}
  .hero-play{align-items:flex-start;text-align:left}
  .hero-panel{max-width:520px}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .matrix-grid{grid-template-columns:repeat(2,1fr)}
  .guard-grid{grid-template-columns:repeat(2,1fr)}
  .qa-grid{grid-template-columns:1fr 1fr}
  .timeline{grid-template-columns:1fr 1fr;gap:20px}
  .timeline::before{display:none}
  .tl-item{padding-top:0;padding-left:34px}
  .tl-dot{left:0;top:8px;transform:none}
  .feed-wrap{grid-template-columns:1fr}
  .join-wrap{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px}
  .search-box input{width:118px}
}
@media (max-width:768px){
  .header-inner{height:66px;gap:14px}
  .main-nav{
    position:absolute;left:0;right:0;top:66px;flex-direction:column;align-items:stretch;
    background:#fff;border-bottom:1px solid var(--line);padding:10px 4%;display:none;
    box-shadow:var(--sh-2);margin-left:0;
  }
  .main-nav.is-open{display:flex}
  .main-nav a{padding:12px 14px;border-radius:12px}
  .nav-toggle{display:grid}
  .search-box{display:none}
  .hero-inner{padding:56px 0 50px}
  .page-hero h1{font-size:28px}
  .hero-meta{gap:14px 24px}
  .hero-meta b{font-size:18px}
  .play-btn{width:82px;height:82px;font-size:22px}
  .compare-wrap{grid-template-columns:1fr}
  .stat-grid{grid-template-columns:1fr 1fr;gap:14px}
  .matrix-grid{grid-template-columns:1fr}
  .guard-grid{grid-template-columns:1fr}
  .qa-grid{grid-template-columns:1fr}
  .timeline{grid-template-columns:1fr}
  .feed-item{flex-direction:column;gap:12px;padding:20px}
  .feed-go{display:none}
  .field-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-about{max-width:none}
  .join-form{padding:24px 20px}
}
@media (max-width:520px){
  :root{--sec:52px}
  .stat-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .sec-head{margin-bottom:32px}
  .hero-cta .btn{width:100%}
  .side-card{padding:22px 18px}
  .footnote{font-size:12px}
}