/* ============ RWABS 品牌官网 ============ */
:root{
  --navy-900:#00062c;
  --navy-800:#050b33;
  --navy-700:#0a1628;
  --navy-600:#0e1e42;
  --navy-card:#0c1533;
  --gold:#c9a962;
  --gold-light:#e8d5a3;
  --gold-deep:#d4b872;
  --teal:#4fc3d1;
  --text:#e8edf7;
  --text-dim:#9aa6c4;
  --line:rgba(201,169,98,.22);
  --maxw:1180px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","Helvetica Neue","PingFang SC","Microsoft YaHei",Arial,sans-serif;
  --serif:"Georgia","Times New Roman","Songti SC",serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  background:var(--navy-900);
  color:var(--text);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.gold{color:var(--gold-light)}
.eyebrow{
  display:inline-block;font-size:13px;letter-spacing:.22em;text-transform:uppercase;
  color:var(--gold);font-weight:600;margin-bottom:18px;
}
h1,h2,h3{line-height:1.2;font-weight:700}
section{padding:96px 0;position:relative}
.section-title{font-size:clamp(28px,4vw,42px);margin-bottom:20px}
.section-lead{font-size:18px;color:var(--text-dim);max-width:680px;margin-bottom:56px}

/* ---------- Header ---------- */
header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(0,6,44,.72);backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(201,169,98,.12);
  transition:background .3s;
}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:12px;font-weight:700;font-size:20px;letter-spacing:.04em}
.brand img{width:40px;height:40px;border-radius:50%}
.brand small{display:block;font-size:10px;letter-spacing:.14em;color:var(--gold);font-weight:500;text-transform:uppercase}
.nav-links{display:flex;gap:32px;align-items:center}
.nav-links a{font-size:15px;color:var(--text-dim);transition:color .2s}
.nav-links a:hover{color:var(--gold-light)}
.nav-right{display:flex;align-items:center;gap:16px}
.lang-toggle{
  display:flex;border:1px solid var(--line);border-radius:999px;overflow:hidden;font-size:13px;
}
.lang-toggle button{
  background:transparent;color:var(--text-dim);border:none;padding:6px 14px;cursor:pointer;font-family:inherit;transition:.2s;
}
.lang-toggle button.active{background:var(--gold);color:var(--navy-900);font-weight:600}
.btn{
  display:inline-flex;align-items:center;gap:8px;cursor:pointer;font-family:inherit;
  border-radius:999px;padding:11px 24px;font-size:15px;font-weight:600;border:none;transition:.25s;white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--gold-light),var(--gold-deep));color:var(--navy-900);
  box-shadow:0 6px 22px rgba(201,169,98,.28);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 30px rgba(201,169,98,.42)}
.btn-ghost{background:transparent;color:var(--text);border:1px solid var(--line)}
.btn-ghost:hover{border-color:var(--gold);color:var(--gold-light)}
.nav-toggle{display:none;background:none;border:none;color:var(--text);font-size:26px;cursor:pointer}

/* ---------- Hero ---------- */
.hero{
  min-height:100vh;display:flex;align-items:center;
  background:linear-gradient(180deg,rgba(0,6,44,.55),rgba(0,6,44,.8)),
    url('assets/hero-bg.png') center/cover no-repeat;
  padding-top:72px;
}
.hero-inner{max-width:760px}
.hero h1{font-size:clamp(38px,6vw,68px);margin-bottom:24px;letter-spacing:-.01em}
.hero h1 .accent{
  background:linear-gradient(120deg,var(--gold-light),var(--gold));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.hero p.sub{font-size:clamp(17px,2vw,21px);color:#d7def0;margin-bottom:38px;max-width:620px}
.hero-cta{display:flex;gap:16px;flex-wrap:wrap}
.hero-stats{display:flex;gap:44px;margin-top:64px;flex-wrap:wrap}
.hero-stats .n{font-size:34px;font-weight:700;color:var(--gold-light);font-family:var(--serif)}
.hero-stats .l{font-size:13px;color:var(--text-dim);letter-spacing:.05em}

/* ---------- About ---------- */
.about{background:var(--navy-800)}
.about-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:64px;align-items:center}
.about-grid p{color:var(--text-dim);margin-bottom:18px;font-size:17px}
.about-emblem{
  aspect-ratio:1;border-radius:24px;
  background:radial-gradient(circle at 50% 40%,rgba(201,169,98,.12),transparent 60%),var(--navy-card);
  border:1px solid var(--line);display:flex;align-items:center;justify-content:center;padding:48px;
}
.about-emblem img{width:100%;max-width:280px;filter:drop-shadow(0 12px 40px rgba(0,0,0,.5))}

/* ---------- Cards grid ---------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  background:var(--navy-card);border:1px solid rgba(255,255,255,.06);border-radius:18px;padding:34px 28px;transition:.3s;
}
.card:hover{transform:translateY(-6px);border-color:var(--line);box-shadow:0 18px 44px rgba(0,0,0,.35)}
.card .ico{
  width:52px;height:52px;border-radius:13px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(201,169,98,.18),rgba(79,195,209,.14));font-size:24px;margin-bottom:20px;
}
.card h3{font-size:20px;margin-bottom:12px}
.card p{color:var(--text-dim);font-size:15px}

/* ---------- Advisory (dark alt) ---------- */
.advisory{background:var(--navy-900)}
/* ---------- Curriculum ---------- */
.curriculum{background:var(--navy-800)}
.modules{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.module{
  display:flex;gap:20px;background:var(--navy-card);border:1px solid rgba(255,255,255,.06);
  border-radius:16px;padding:28px;
}
.module .step{
  font-family:var(--serif);font-size:30px;font-weight:700;color:var(--gold);
  min-width:46px;line-height:1;
}
.module h3{font-size:18px;margin-bottom:8px}
.module p{color:var(--text-dim);font-size:14px}

/* ---------- Hubs (gated) ---------- */
.hubs{
  background:linear-gradient(180deg,var(--navy-900),var(--navy-700)),
    url('assets/hero-bg.png') center/cover;
  background-blend-mode:multiply;text-align:center;
}
.hubs .section-lead{margin-left:auto;margin-right:auto}
.hub-map{
  display:flex;justify-content:center;gap:14px;flex-wrap:wrap;margin:12px auto 48px;max-width:760px;
}
.hub-chip{
  border:1px solid var(--line);border-radius:999px;padding:9px 20px;font-size:14px;color:var(--text-dim);
  background:rgba(12,21,51,.6);
}
.hub-chip.live{color:var(--gold-light);border-color:var(--gold)}
.hub-note{font-size:13px;color:var(--text-dim);margin-top:24px}

/* ---------- Team ---------- */
.team{background:var(--navy-800)}
.people{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.person{text-align:center}
.person .avatar{
  width:110px;height:110px;border-radius:50%;margin:0 auto 16px;
  background:radial-gradient(circle at 50% 35%,rgba(201,169,98,.25),var(--navy-card));
  border:2px solid var(--line);display:flex;align-items:center;justify-content:center;
  font-family:var(--serif);font-size:34px;color:var(--gold-light);overflow:hidden;
}
.person .avatar img{width:100%;height:100%;object-fit:cover}
.person h3{font-size:17px;margin-bottom:4px}
.person .role{font-size:13px;color:var(--gold);letter-spacing:.03em}
.person .loc{font-size:12px;color:var(--text-dim);margin-top:4px}

/* ---------- FAQ ---------- */
.faq{background:var(--navy-900)}
.faq-list{max-width:820px;margin:0 auto}
.faq-item{border-bottom:1px solid rgba(255,255,255,.08)}
.faq-q{
  width:100%;text-align:left;background:none;border:none;color:var(--text);font-family:inherit;
  font-size:18px;font-weight:600;padding:24px 40px 24px 0;cursor:pointer;position:relative;
}
.faq-q::after{content:'+';position:absolute;right:6px;top:22px;font-size:24px;color:var(--gold);transition:.3s}
.faq-item.open .faq-q::after{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease;color:var(--text-dim);font-size:16px}
.faq-item.open .faq-a{max-height:320px;padding-bottom:24px}

/* ---------- CTA band ---------- */
.cta-band{
  background:linear-gradient(135deg,var(--navy-600),var(--navy-800));text-align:center;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.cta-band h2{font-size:clamp(26px,3.5vw,38px);margin-bottom:18px}
.cta-band p{color:var(--text-dim);font-size:17px;margin-bottom:34px;max-width:560px;margin-left:auto;margin-right:auto}
.cta-band .hero-cta{justify-content:center}

/* ---------- Footer ---------- */
footer{background:var(--navy-900);padding:64px 0 34px;border-top:1px solid rgba(255,255,255,.07)}
.foot-top{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;margin-bottom:44px}
.foot-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;font-weight:700;font-size:19px}
.foot-brand img{width:38px;height:38px;border-radius:50%}
.foot-col p,.foot-col a{color:var(--text-dim);font-size:14px;display:block;margin-bottom:10px}
.foot-col a:hover{color:var(--gold-light)}
.foot-col h4{font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--gold);margin-bottom:18px}
.disclaimer{
  background:rgba(12,21,51,.5);border:1px solid rgba(255,255,255,.06);border-radius:12px;
  padding:18px 22px;font-size:12.5px;color:var(--text-dim);line-height:1.7;margin-bottom:30px;
}
.foot-bottom{
  border-top:1px solid rgba(255,255,255,.07);padding-top:24px;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:13px;color:var(--text-dim);
}

/* ---------- Wallet gate modal ---------- */
.modal-overlay{
  position:fixed;inset:0;background:rgba(0,3,20,.82);backdrop-filter:blur(6px);
  display:none;align-items:center;justify-content:center;z-index:1000;padding:20px;
}
.modal-overlay.show{display:flex}
.modal{
  background:linear-gradient(180deg,var(--navy-700),var(--navy-800));
  border:1px solid var(--line);border-radius:22px;max-width:440px;width:100%;padding:40px 36px;text-align:center;
  box-shadow:0 30px 80px rgba(0,0,0,.6);position:relative;
}
.modal .close{position:absolute;top:18px;right:20px;background:none;border:none;color:var(--text-dim);font-size:24px;cursor:pointer}
.modal .lock{font-size:44px;margin-bottom:16px}
.modal h3{font-size:24px;margin-bottom:12px}
.modal p{color:var(--text-dim);font-size:15px;margin-bottom:28px}
.modal .btn{width:100%;justify-content:center;margin-bottom:14px}
.modal .wallet-status{font-size:14px;min-height:22px;margin-bottom:10px}
.modal .wallet-status.err{color:#f0a3a3}
.modal .wallet-status.ok{color:var(--teal)}
.modal .hint{font-size:12.5px;color:var(--text-dim);line-height:1.6}
.modal .hint a{color:var(--gold-light);text-decoration:underline}

/* ---------- Mobile menu drawer ---------- */
.mobile-menu{
  display:none;position:fixed;top:72px;left:0;right:0;background:var(--navy-800);
  border-bottom:1px solid var(--line);z-index:99;padding:12px 24px 24px;
}
.mobile-menu.show{display:block}
.mobile-menu a{display:block;padding:12px 0;color:var(--text-dim);border-bottom:1px solid rgba(255,255,255,.05)}

/* ---------- Reveal animation ---------- */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s,transform .7s}
.reveal.in{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media(max-width:900px){
  .nav-links{display:none}
  .nav-toggle{display:block}
  .about-grid{grid-template-columns:1fr;gap:36px}
  .cards{grid-template-columns:1fr}
  .modules{grid-template-columns:1fr}
  .people{grid-template-columns:repeat(2,1fr)}
  .foot-top{grid-template-columns:1fr}
  section{padding:68px 0}
  .hero-stats{gap:28px}
}
@media(max-width:480px){
  .people{grid-template-columns:1fr}
  .hero-cta{flex-direction:column}
  .hero-cta .btn{width:100%;justify-content:center}
}