/* ============================================================
   6366 · Noir 页面样式（首页、联名页等黑底展示页）
   依赖 theme.css（导航、按钮基础），本文件只管黑底大版面
   ============================================================ */
:root{
  --noir:#050505; --noir-2:#0E0E0E; --noir-3:#161616;
  --silver:#C9C9C9; --mist:#A3A3A3; --dim:#8F8F8F;
  /* c6：次要文字对比度 ≥ 4.5:1（design-system.md 1.1）；--dim 原为 42% 白（约 4.0:1） */
  --text-body:#A3A3A3; --text-muted:#8F8F8F;
  --hair:rgba(255,255,255,.12);
}
body.noir{background:var(--noir);color:var(--mist)}
body.noir h1,body.noir h2,body.noir h3,body.noir h4{color:#fff}
body.noir a{color:#fff}
body.noir .foot{color:var(--dim)}
.wrap{max-width:1180px;margin:0 auto;padding:0 32px}
@media (max-width:760px){.wrap{padding:0 20px}}

/* 丝绸线条背景 */
.silk{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;z-index:0}
.silk path{fill:none;stroke:#fff;vector-effect:non-scaling-stroke}

/* 字体角色 */
.it{font-family:var(--display);font-style:italic;font-weight:400;letter-spacing:.01em}
.kicker{display:flex;align-items:center;gap:14px;font-size:11px;letter-spacing:.32em;text-transform:uppercase;color:var(--dim)}
.kicker b{color:#fff;font-weight:500;font-variant-numeric:tabular-nums;letter-spacing:.1em}
.kicker::after{content:"";flex:0 0 40px;height:1px;background:var(--hair)}

/* Hero */
.n-hero{position:relative;min-height:calc(100vh - 60px);min-height:calc(100svh - 60px);display:flex;align-items:center;overflow:hidden;
  background:radial-gradient(90% 70% at 70% 10%,#2A2A2A 0%,#0B0B0B 45%,#050505 100%)}
.n-hero .wrap{position:relative;z-index:1;width:100%;padding-top:72px;padding-bottom:96px}
.n-hero .brandline{font-size:13px;letter-spacing:.06em;color:var(--mist)}
.n-hero .brandline b{color:#fff;font-weight:600}
.n-hero h1{font-size:clamp(42px,7.4vw,96px);line-height:1.06;font-weight:700;letter-spacing:-.02em;margin-top:28px}
.n-hero h1 .soft{color:var(--text-muted)}
.n-hero .it.sub{display:block;font-size:clamp(20px,2.4vw,30px);color:#E6E6E6;margin-top:22px}
.n-hero p.lead{max-width:560px;font-size:16px;line-height:1.8;color:var(--mist);margin:22px 0 0}
.n-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:36px}
.n-btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;height:48px;padding:0 26px;border-radius:999px;font-size:15px;font-weight:500;
  border:1px solid rgba(255,255,255,.3);color:#fff;background:transparent;cursor:pointer;transition:background .2s,color .2s,border-color .2s;text-decoration:none;font-family:inherit}
.n-btn:hover{border-color:#fff;color:#fff;text-decoration:none}
.n-btn.solid{background:#fff;color:#000;border-color:#fff}
.n-btn.solid:hover{background:#DADADA;border-color:#DADADA;color:#000}
.n-btn[aria-disabled="true"]{opacity:.38;cursor:not-allowed;pointer-events:none}
.n-btn .arr{transition:transform .2s}
.n-btn:hover .arr{transform:translateX(3px)}
.scroll-cue{position:absolute;left:50%;bottom:28px;transform:translateX(-50%);z-index:1;font-size:10px;letter-spacing:.4em;color:var(--dim);text-transform:uppercase}
.scroll-cue::after{content:"";display:block;width:1px;height:36px;margin:10px auto 0;background:linear-gradient(#fff,transparent)}

/* 区块 */
.n-sec{padding:120px 0;border-top:1px solid var(--hair);position:relative}
.n-sec h2{font-size:clamp(30px,4.2vw,52px);line-height:1.15;font-weight:700;letter-spacing:-.015em;margin-top:22px}
.n-sec h2 .soft{color:var(--text-muted)}
.n-sec .intro{max-width:620px;font-size:16px;line-height:1.85;margin-top:18px}
@media (max-width:760px){.n-sec{padding:80px 0}}

/* 三支团队：编号列表 */
.teams{margin-top:56px;border-top:1px solid var(--hair)}
.team{display:grid;grid-template-columns:90px 1.1fr 1.4fr auto;gap:28px;align-items:center;padding:34px 0;border-bottom:1px solid var(--hair);color:inherit;text-decoration:none;transition:background .25s,padding .25s}
.team:hover{background:linear-gradient(90deg,rgba(255,255,255,.04),transparent);padding-left:14px;text-decoration:none}
.team .no{font-family:var(--display);font-style:italic;font-size:30px;color:var(--text-muted)}
.team h3{font-size:26px;font-weight:600}
.team h3 small{display:block;font-size:12px;letter-spacing:.28em;color:var(--dim);font-weight:400;margin-top:8px}
.team p{margin:0;font-size:15px;line-height:1.75}
.team .save{font-size:14px;color:#fff;white-space:nowrap;text-align:right}
.team .save span{display:block;color:var(--dim);font-size:12px;margin-top:4px}
@media (max-width:900px){.team{grid-template-columns:56px 1fr;gap:10px 18px}.team p,.team .save{grid-column:2;text-align:left}}

/* 数字 */
.figures{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;margin-top:56px;border-top:1px solid var(--hair);border-bottom:1px solid var(--hair)}
.fig{padding:36px 28px 34px 0}
.fig + .fig{padding-left:28px;border-left:1px solid var(--hair)}
.fig .v{font-size:clamp(34px,4vw,56px);font-weight:300;color:#fff;letter-spacing:-.02em;font-variant-numeric:tabular-nums;line-height:1}
.fig .v small{font-size:.42em;color:var(--mist);margin-left:4px;font-weight:400}
.fig .l{font-size:13px;margin-top:14px;color:var(--mist)}
.fig .l em{display:block;font-style:normal;color:var(--dim);font-size:12px;margin-top:4px}
@media (max-width:900px){.figures{grid-template-columns:1fr 1fr}.fig{padding:26px 16px 26px 0}.fig:nth-child(3){padding-left:0;border-left:0}.fig:nth-child(n+3){border-top:1px solid var(--hair)}}

/* 渠道条 */
.channels-row{display:flex;flex-wrap:wrap;gap:10px 28px;margin-top:30px;font-size:13px;letter-spacing:.08em;color:var(--dim)}
.channels-row span::before{content:"— ";color:#555}

/* 联名横幅 */
.collab-band{display:grid;grid-template-columns:1fr 1fr;min-height:560px;background:#000;border-top:1px solid var(--hair);border-bottom:1px solid var(--hair);overflow:hidden}
.collab-band .ph{background:#000 center/cover no-repeat;filter:grayscale(1) contrast(1.05);min-height:380px}
.collab-band .tx{display:flex;flex-direction:column;justify-content:center;padding:72px 64px}
.collab-band h2{font-size:clamp(34px,4.6vw,60px);line-height:1.1;font-weight:700;margin-top:24px}
.collab-band h2 .x{font-family:var(--display);font-style:italic;font-weight:400;color:var(--text-muted);margin:0 .15em}
@media (max-width:900px){.collab-band{grid-template-columns:1fr}.collab-band .tx{padding:48px 20px 64px}}

/* 收尾 */
.n-closing{text-align:center;padding:140px 0}
.n-closing h2{margin:22px auto 0;max-width:820px}
.n-closing .kicker{justify-content:center}
.n-closing .kicker::before{content:"";flex:0 0 40px;height:1px;background:var(--hair)}
.n-closing .n-actions{justify-content:center}

.n-foot{border-top:1px solid var(--hair);padding:36px 0 48px;font-size:12px;color:var(--dim)}
.n-foot .wrap{display:flex;flex-wrap:wrap;gap:12px 32px;justify-content:space-between;align-items:center}
.n-foot a{color:var(--mist)}
.n-foot .mark{font-family:var(--display);font-style:italic;font-size:15px;color:#fff}

/* 入场动画 */
.noir-on .reveal{opacity:0;transform:translateY(18px);transition:opacity .9s ease,transform .9s cubic-bezier(.2,.8,.2,1)}
.noir-on .reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}

/* ---- 彩色点缀 ---- */
.glow-ai{position:absolute;inset:0;pointer-events:none;z-index:0;
  background:radial-gradient(40% 50% at 82% 18%,rgba(123,97,255,.35),transparent 70%),radial-gradient(35% 45% at 95% 60%,rgba(212,91,196,.22),transparent 70%),radial-gradient(30% 40% at 70% 0%,rgba(31,95,255,.30),transparent 70%)}
.glow-red{position:absolute;inset:0;pointer-events:none;z-index:0;
  background:radial-gradient(55% 60% at 100% 0%,rgba(226,72,72,.40),transparent 70%),radial-gradient(45% 45% at 100% 100%,rgba(180,40,50,.22),transparent 70%)}
.grad-text{background:var(--ai-grad);-webkit-background-clip:text;background-clip:text;color:transparent}
body.noir .tiles,body.noir .tile.wide{margin-top:40px}

/* ---- 购买弹层 ---- */
.buy{display:flex;flex-wrap:wrap;gap:12px}
.buy-regions{display:inline-flex;border:1px solid var(--hair);border-radius:999px;padding:4px;margin:28px 0 24px}
.buy-regions button{appearance:none;border:0;background:none;color:var(--mist);font:inherit;font-size:14px;padding:9px 22px;border-radius:999px;cursor:pointer}
.buy-regions button[aria-selected="true"]{background:#fff;color:#000}
.buy-modal{position:fixed;inset:0;z-index:100;display:none;align-items:center;justify-content:center;padding:20px;background:rgba(0,0,0,.7);backdrop-filter:blur(6px)}
.buy-modal.open{display:flex}
.buy-sheet{position:relative;width:100%;max-width:440px;background:#111;border:1px solid var(--hair);border-radius:16px;padding:32px 28px;color:var(--mist)}
.buy-sheet h4{color:#fff;font-size:20px;margin:0 0 10px}
.buy-sheet p{margin:0 0 18px;font-size:14px;line-height:1.7}
.buy-x{position:absolute;top:10px;right:12px;width:36px;height:36px;border:0;background:none;color:var(--mist);font-size:24px;cursor:pointer}
.buy-row{display:flex;gap:8px;align-items:center;margin-bottom:18px}
.buy-row code{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;background:#000;border:1px solid var(--hair);border-radius:8px;padding:9px 12px;font-size:12px;color:#fff}
.buy-copy{border:1px solid var(--hair);background:none;color:#fff;border-radius:8px;padding:8px 12px;font:inherit;font-size:13px;cursor:pointer}
.buy-list{list-style:none;padding:0;margin:0}
.buy-list li{display:flex;align-items:center;gap:12px;padding:12px 0;border-bottom:1px solid var(--hair);font-size:14px}
.buy-list li span{width:56px;color:var(--dim)}
.buy-list li b,.buy-list li a{flex:1;color:#fff;font-weight:500;word-break:break-all}
.collab-band h2 .x{display:inline-block;width:1px;height:.8em;margin:0 .32em;background:linear-gradient(180deg,transparent,rgba(255,255,255,.75) 20%,rgba(255,255,255,.75) 80%,transparent);transform:translateY(.08em)}

/* ============ 动态首屏 ============ */
.silk-cv{position:absolute;inset:0;width:100%;height:100%;z-index:0;pointer-events:none}
.stage{position:relative;height:calc(100vh - 60px);height:calc(100svh - 60px);min-height:560px;overflow:hidden;background:#030303;display:flex;align-items:center;justify-content:center;text-align:center}
.stage::after{content:"";position:absolute;inset:0;z-index:0;pointer-events:none;background:radial-gradient(70% 60% at 50% 50%,transparent 40%,rgba(0,0,0,.75) 100%)}
.stage .in-stage{position:relative;z-index:1;padding:0 20px}
.stage .eyebrow-x{font-size:11px;letter-spacing:.5em;color:rgba(255,255,255,.62);text-transform:uppercase}
.mega{font-weight:800;line-height:.92;letter-spacing:-.03em;color:#fff;font-size:clamp(56px,11vw,168px);margin:26px 0 0}
.mega .ln{display:block;overflow:hidden;padding-bottom:.04em}
.mega .ln > span{display:inline-block}
.js .mega .ln > span{transform:translateY(105%);transition:transform 1.1s cubic-bezier(.16,1,.3,1)}
.ready .mega .ln > span{transform:none}
.mega .ln:nth-child(2) > span{transition-delay:.12s}
.mega .ln:nth-child(3) > span{transition-delay:.24s}
.mega .grad{background:linear-gradient(90deg,#7AA0FF,#B48CFF 40%,#FF8FC8 75%,#FFC48E);-webkit-background-clip:text;background-clip:text;color:transparent;background-size:200% 100%;animation:shine 6s linear infinite}
@keyframes shine{to{background-position:-200% 0}}
.rule{width:56px;height:1px;background:rgba(255,255,255,.5);margin:30px auto 18px}
.stage .tri{font-size:12px;letter-spacing:.42em;color:rgba(255,255,255,.62);text-transform:uppercase}
.js .fade-late{opacity:0;transition:opacity 1.2s ease .6s}
.ready .fade-late{opacity:1}
.stage .corner{position:absolute;z-index:1;bottom:28px;font-size:11px;letter-spacing:.3em;color:rgba(255,255,255,.6)}
.stage .corner.l{left:32px;display:flex;align-items:center;gap:12px}
.stage .corner.l::before{content:"";width:28px;height:1px;background:rgba(255,255,255,.6)}
.stage .corner.r{right:32px}
.ghost-btn{display:inline-flex;align-items:center;height:44px;padding:0 22px;border:1px solid rgba(255,255,255,.55);color:#fff;font-size:12px;letter-spacing:.24em;text-transform:uppercase;text-decoration:none;transition:background .25s,color .25s}
.ghost-btn:hover{background:#fff;color:#000;text-decoration:none}
@media (max-width:640px){.stage .corner.l{display:none}.stage .corner.r{left:50%;right:auto;transform:translateX(-50%)}}

/* 跑马灯 */
.marquee{overflow:hidden;border-top:1px solid var(--hair);border-bottom:1px solid var(--hair);background:#050505;padding:22px 0}
.marquee .track{display:flex;width:max-content;gap:56px;animation:mq 38s linear infinite;font-size:clamp(20px,2.6vw,34px);font-weight:700;color:#fff;white-space:nowrap}
.marquee .track span{display:inline-flex;align-items:center;gap:56px}
.marquee .track span::after{content:"✦";font-size:.6em;background:linear-gradient(135deg,#1F5FFF,#7B61FF);-webkit-background-clip:text;background-clip:text;color:transparent}
.marquee .track .it{font-weight:400;color:var(--text-muted)}
@keyframes mq{to{transform:translateX(-50%)}}

/* 肖像慢推镜头 */
.kenburns{animation:kb 18s ease-in-out infinite alternate}
@keyframes kb{from{transform:scale(1)}to{transform:scale(1.08) translate(-1.5%,-1%)}}

@media (prefers-reduced-motion:reduce){
  .js .mega .ln > span{transform:none;transition:none}.js .fade-late{opacity:1;transition:none}
  .marquee .track,.kenburns,.mega .grad{animation:none}
}
.buy-price{flex-basis:100%;font-size:36px;font-weight:300;color:#fff;letter-spacing:-.02em;margin-bottom:6px}
.buy-empty{margin:0;font-size:15px;color:var(--mist)}

/* c6：黑底页面的口径说明 */
body.noir .basis-note{color:var(--text-muted)}
body.noir .basis-note b{color:var(--text-body)}