/* ============================================
   知时 Landing — 墨渊星汉
   星空背景 + 毛玻璃三卡 + 辉光动效
   ============================================ */

#mxhCanvas{position:fixed;inset:0;z-index:0;width:100%;height:100%}
#bgCanvas{position:fixed;inset:0;z-index:0;width:100%;height:100%;pointer-events:none}
.landing-wrap{position:relative;z-index:1;max-width:900px;margin:0 auto;padding:0 24px 80px}

/* ============ HERO ============ */
.hero{display:flex;flex-direction:column;align-items:center;justify-content:flex-start;
  height:100vh;text-align:center;padding:6vh 0 0;box-sizing:border-box}
.hero-brand{margin-bottom:28px}
@keyframes heroReveal{from{opacity:.6;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}
.hero-line{width:80px;height:1px;margin:0 auto 36px;
  background:linear-gradient(90deg,transparent,var(--gold),var(--star),transparent)}
.hero h1{font-size:80px;font-weight:900;letter-spacing:38px;margin-left:38px;
  color:var(--gold-l);
  text-shadow:0 0 50px rgba(201,168,76,.3),0 0 100px rgba(160,140,110,.1);
  margin-bottom:16px}
.hero-tagline{font-size:20px;color:rgba(220,210,190,.65);letter-spacing:20px;font-weight:400}
.hero-desc{font-size:16px;color:var(--tx2);line-height:2.4;letter-spacing:3px;
  margin-bottom:52px}

/* Hero 按钮组 */
.hero-ctas{display:flex;gap:16px;flex-wrap:wrap;justify-content:center}
.hero-cta{display:inline-flex;align-items:center;gap:8px;padding:18px 44px;font-size:18px;font-weight:700;
  letter-spacing:5px;border-radius:30px;text-decoration:none;cursor:pointer;
  transition:all .35s cubic-bezier(.4,0,.2,1);position:relative;overflow:hidden}
.hero-cta::after{content:'';position:absolute;inset:0;border-radius:30px;opacity:0;transition:opacity .35s}
.hero-cta:hover::after{opacity:1}
/* 排盘按钮 */
.cta-paipan{background:linear-gradient(135deg,rgba(201,168,76,.2),rgba(201,168,76,.06));
  color:var(--gold-l);border:1px solid rgba(201,168,76,.3);
  box-shadow:0 0 30px rgba(201,168,76,.08),0 4px 20px rgba(0,0,0,.3)}
.cta-paipan:hover{transform:translateY(-2px);box-shadow:0 0 50px rgba(201,168,76,.15),0 8px 30px rgba(0,0,0,.4)}
/* 合盘按钮 */
.cta-hepan{background:linear-gradient(135deg,rgba(91,127,165,.2),rgba(91,127,165,.05));
  color:#a0c8e8;border:1px solid rgba(91,127,165,.3);
  box-shadow:0 0 30px rgba(91,127,165,.06),0 4px 20px rgba(0,0,0,.3)}
.cta-hepan:hover{transform:translateY(-2px);box-shadow:0 0 50px rgba(91,127,165,.12),0 8px 30px rgba(0,0,0,.4)}
/* AI按钮 */
.cta-ai{background:linear-gradient(135deg,rgba(201,168,76,.25),rgba(91,127,165,.1));
  color:#f0d060;border:1px solid rgba(201,168,76,.4);
  box-shadow:0 0 35px rgba(201,168,76,.12),0 4px 20px rgba(0,0,0,.3);
  animation:btnBreath 3s ease-in-out infinite}
.cta-ai:hover{transform:translateY(-2px);box-shadow:0 0 60px rgba(201,168,76,.22),0 8px 30px rgba(0,0,0,.4)}
@keyframes btnBreath{0%,100%{box-shadow:0 0 35px rgba(201,168,76,.12)}50%{box-shadow:0 0 55px rgba(201,168,76,.22)}}

/* 滚动书卷 */
.book-scroll-wrap{width:100%;overflow:hidden;margin-top:60px;opacity:0;animation:heroReveal 1s ease-out .8s forwards}
.book-scroll-track{display:flex;gap:32px;animation:scrollBooks 40s linear infinite;white-space:nowrap}
.book-scroll-inner{font-size:14px;color:var(--tx3);letter-spacing:5px;opacity:.45}
@keyframes scrollBooks{0%{transform:translateX(0)}100%{transform:translateX(-50%)}}

.hero-scroll-hint{font-size:13px;color:var(--tx3);letter-spacing:4px;margin-top:40px;opacity:.35;animation:pulse 2s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:.3}50%{opacity:.6}}

/* ============ 三功能卡 ============ */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:24px;padding:0 0 60px}
.feat-card{background:var(--card);border:1px solid var(--bd);border-radius:var(--radius);
  padding:36px 24px;text-align:center;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  box-shadow:0 0 40px rgba(0,0,0,.4),0 0 0 1px rgba(201,168,76,.03) inset;
  transition:all .4s cubic-bezier(.4,0,.2,1);position:relative;overflow:hidden}
.feat-card::before{content:'';position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--gold),var(--star),transparent);opacity:.4}
.feat-card:hover{transform:translateY(-4px);
  box-shadow:0 0 60px rgba(201,168,76,.08),0 12px 40px rgba(0,0,0,.5);border-color:var(--bd2)}
.feat-card .feat-icon{font-size:36px;margin-bottom:16px}
.feat-card h3{font-size:18px;font-weight:700;color:var(--gold-l);letter-spacing:4px;margin-bottom:10px}
.feat-card p{font-size:13px;color:var(--tx2);line-height:1.8;letter-spacing:1px}
/* 第二张卡星光色 */
.feat-card:nth-child(2) h3{color:#a0c8e8}
.feat-card:nth-child(2)::before{background:linear-gradient(90deg,transparent,var(--star),var(--gold),transparent)}
/* 第三张卡 AI 辉光 */
.feat-card:nth-child(3){border-color:rgba(201,168,76,.2)}
.feat-card:nth-child(3) h3{background:linear-gradient(135deg,var(--gold-l),#f0d060);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}

/* ============ TRUST ============ */
.trust-section{margin-top:80px;text-align:center}
.trust-section h2{font-size:22px;font-weight:700;color:var(--gold-l);letter-spacing:6px;margin-bottom:40px}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.trust-item{background:var(--card);border:1px solid var(--bd);border-radius:var(--radius);
  padding:28px 20px;backdrop-filter:blur(20px);text-align:left;transition:all .3s}
.trust-item:hover{border-color:var(--bd2);box-shadow:0 0 30px rgba(201,168,76,.04)}
.trust-num{font-size:28px;font-weight:900;color:var(--gold-l);opacity:.25;margin-bottom:12px;letter-spacing:2px}
.trust-body h4{font-size:14px;font-weight:700;color:var(--tx);margin-bottom:8px;letter-spacing:1px}
.trust-body p{font-size:11px;color:var(--tx2);line-height:1.8}

/* ============ CTA BOTTOM ============ */
.cta-bottom{margin-top:80px;text-align:center}
.cta-bottom h2{font-size:28px;font-weight:700;color:var(--gold-l);letter-spacing:6px;margin-bottom:16px}
.cta-bottom p{font-size:14px;color:var(--tx2);margin-bottom:32px;letter-spacing:1px}
.cta-btn{display:inline-block;padding:14px 36px;font-size:15px;font-weight:700;
  letter-spacing:3px;border-radius:28px;text-decoration:none;cursor:pointer;margin:0 8px 12px;
  transition:all .3s;background:linear-gradient(135deg,rgba(201,168,76,.18),rgba(201,168,76,.03));
  color:var(--gold-l);border:1px solid rgba(201,168,76,.3)}
.cta-btn:hover{transform:translateY(-2px);box-shadow:0 0 30px rgba(201,168,76,.12)}

/* ============ FOOTER ============ */
.land-footer{text-align:center;margin-top:60px;padding-top:24px;border-top:1px solid var(--bd)}
.land-footer p{font-size:13px;color:var(--tx3);letter-spacing:3px;line-height:2.2}
.land-footer .disc{font-size:10px;opacity:.4;margin-top:4px}

/* ============ 响应式 ============ */
@media(max-width:768px){
  .landing-wrap{padding:0 14px 50px}
  .hero h1{font-size:42px;letter-spacing:20px;margin-left:20px}
  .hero-tagline{font-size:14px;letter-spacing:10px}
  .hero-cta{padding:12px 28px;font-size:14px}
  .features{grid-template-columns:1fr;gap:16px}
  .trust-grid{grid-template-columns:1fr 1fr;gap:12px}
  .trust-num{font-size:22px}
  .cta-bottom h2{font-size:22px}
}
@media(max-width:400px){
  .hero{min-height:80vh}
  .hero h1{font-size:34px;letter-spacing:14px;margin-left:14px}
  .hero-ctas{flex-direction:column;align-items:center}
  .hero-cta{width:100%;justify-content:center}
  .trust-grid{grid-template-columns:1fr}
}