* { margin:0; padding:0; box-sizing:border-box; }
  html { scroll-behavior:auto; }
  html[data-mode="dark"]{
    --fg:#f2ecdf; --muted:rgba(242,236,223,.60); --faint:rgba(242,236,223,.34);
    --hair:rgba(242,236,223,.16); --chip:rgba(242,236,223,.08);
  }
  html[data-mode="light"]{
    --fg:#251f16; --muted:rgba(37,31,22,.62); --faint:rgba(37,31,22,.38);
    --hair:rgba(37,31,22,.15); --chip:rgba(37,31,22,.05);
  }
  body{
    font-family:"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Microsoft YaHei",sans-serif;
    color:var(--fg); background:#0e0f12; overflow-x:hidden;
    -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
  }
  body, .nav, .cap, .chips button { transition: color .5s ease, border-color .5s ease; }
  h1,h2,.serif{ font-family:"Noto Serif SC","Source Han Serif SC","Songti SC",STSong,SimSun,serif; }

  #c{ position:fixed; inset:0; z-index:0; pointer-events:none; }

  .nav{ position:fixed; z-index:20; top:0; left:0; right:0; display:flex; align-items:baseline; gap:14px;
    padding:20px clamp(20px,5vw,48px); }
  .nav .mark{ font-family:"Noto Serif SC","Songti SC",serif; font-weight:700; letter-spacing:.14em; font-size:15px; }
  .nav .tag{ font-size:11px; letter-spacing:.22em; color:var(--faint); }

  .chips{ position:fixed; z-index:20; top:18px; right:clamp(16px,4vw,44px); display:flex; gap:8px; }
  .chips button{
    font-size:12px; letter-spacing:.18em; padding:7px 14px 6px; cursor:pointer;
    border:1px solid var(--hair); border-radius:999px; background:var(--chip); color:var(--muted);
  }
  .chips button.on{ color:var(--accent-strong); border-color:var(--accent-strong); background:transparent; }

  .cap{ position:fixed; z-index:20; left:clamp(20px,5vw,48px); bottom:16px; font-size:10.5px;
    letter-spacing:.12em; color:var(--faint); pointer-events:none; }

  main{ position:relative; z-index:1; }
  section{ position:relative; padding:0 clamp(22px,8vw,130px); }
  .col{ max-width:660px; }

  .eyebrow{ font-size:11px; letter-spacing:.34em; color:var(--accent-strong); margin-bottom:26px; }
  .eyebrow b{ color:var(--muted); font-weight:400; margin-left:10px; letter-spacing:.22em; }
  h2{ font-size:clamp(27px,4.6vw,44px); font-weight:700; line-height:1.28; letter-spacing:.02em; margin-bottom:26px; }
  .lead{ font-size:clamp(16px,2vw,18.5px); line-height:2.05; color:var(--muted); }
  .lead strong{ color:var(--fg); font-weight:600; }

  .pts{ list-style:none; margin-top:34px; display:grid; gap:16px; }
  .pts li{ font-size:14.5px; line-height:1.9; color:var(--muted); padding-left:16px; border-left:1px solid var(--hair); }
  .pts b{ color:var(--fg); font-weight:600; margin-right:.6em; }

  .note{ margin-top:34px; font-size:13px; line-height:1.9; color:var(--muted);
    border-left:2px solid var(--accent-strong); padding:2px 0 2px 14px; }
  .note .k{ color:var(--accent-strong); letter-spacing:.1em; margin-right:.5em; }

  .handoff{ margin-top:52px; font-family:"Noto Serif SC","Songti SC",serif;
    font-size:clamp(19px,2.6vw,24px); line-height:1.8; color:var(--fg); }
  .handoff::before{ content:"——"; color:var(--accent-strong); margin-right:.4em; }

  /* S1 */
  .s1{ min-height:100vh; display:flex; align-items:center; }
  .s1 .en{ font-size:11px; letter-spacing:.44em; color:var(--accent-strong); margin-bottom:34px; }
  .s1 h1{ font-size:clamp(34px,7.2vw,74px); font-weight:700; line-height:1.32; letter-spacing:.015em; }
  .s1 h1 .char{ display:inline-block; opacity:0; transform:translateY(.5em); animation:rise .9s cubic-bezier(.2,.65,.25,1) forwards; }
  @keyframes rise{ to{ opacity:1; transform:none; } }
  .s1 h1 em{ font-style:normal; color:var(--accent-strong); }
  .s1 .sub{ margin-top:34px; font-size:clamp(14.5px,1.8vw,17px); line-height:2.1; color:var(--muted); max-width:34em; }
  .cue{ position:absolute; left:clamp(24px,8vw,132px); bottom:42px; width:1px; height:64px; background:var(--hair); overflow:hidden; }
  .cue::after{ content:""; position:absolute; left:0; top:-40%; width:100%; height:40%;
    background:var(--accent-strong); animation:cue 2.2s ease-in-out infinite; }
  @keyframes cue{ 0%{top:-40%} 70%,100%{top:110%} }

  /* S2 */
  .s2{ min-height:135vh; display:flex; align-items:center; }
  .s2 p{ font-size:clamp(16.5px,2.1vw,19px); line-height:2.15; color:var(--muted); margin-bottom:30px; }
  .s2 p strong{ color:var(--fg); font-weight:600; }
  .s2 .born{ margin-top:52px; padding-top:30px; border-top:1px solid var(--hair);
    font-family:"Noto Serif SC","Songti SC",serif; font-size:clamp(17px,2.2vw,21px); color:var(--fg); letter-spacing:.04em; }

  /* S3 */
  .s3{ min-height:140vh; display:flex; flex-direction:column; justify-content:flex-end; padding-bottom:16vh; }
  .chain{ display:flex; flex-wrap:wrap; align-items:center; gap:10px 14px; margin-top:38px;
    font-size:clamp(13px,1.6vw,15.5px); letter-spacing:.06em; }
  .chain .n{ padding:10px 16px; border:1px solid var(--hair); border-radius:2px; color:var(--fg); background:var(--chip); }
  .chain .n small{ display:block; font-size:10.5px; letter-spacing:.28em; color:var(--accent-strong); margin-bottom:3px; }
  .chain .a{ color:var(--accent-strong); }
  .chain .loop{ width:100%; font-size:12px; color:var(--faint); letter-spacing:.14em; margin-top:4px; }
  .extag{ display:inline-block; margin-top:30px; font-size:12px; letter-spacing:.14em; color:var(--muted);
    border:1px dashed var(--hair); border-radius:999px; padding:7px 16px; }
  .extag i{ font-style:normal; color:var(--accent-strong); margin-right:.6em; }

  /* acts */
  .s4{ min-height:135vh; padding-top:18vh; }
  .s5{ min-height:185vh; padding-top:16vh; }
  .s6{ min-height:165vh; padding-top:18vh; }

  /* S9 */
  .s9{ min-height:120vh; display:flex; align-items:center; justify-content:center; text-align:center; }
  .s9 .col{ max-width:560px; }
  .s9 h2{ margin-bottom:22px; }
  .s9 p{ font-size:15.5px; line-height:2.1; color:var(--muted); }
  .qr{ width:132px; height:132px; margin:44px auto 0; border:1px solid var(--hair); border-radius:4px;
    display:flex; align-items:center; justify-content:center; overflow:hidden; background:#fff; }
  .qr img{ width:100%; height:100%; object-fit:contain; display:block; }
  .addr{ margin-top:16px; font-size:11px; letter-spacing:.3em; color:var(--faint); }
  .foot{ margin-top:70px; font-size:10.5px; letter-spacing:.08em; line-height:2; color:var(--faint); }

  /* ticker */
  .ticker{ position:absolute; left:0; right:0; bottom:112px; overflow:hidden;
    -webkit-mask-image:linear-gradient(90deg,transparent,#000 10%,#000 90%,transparent);
    mask-image:linear-gradient(90deg,transparent,#000 10%,#000 90%,transparent); }
  .ticker .in{ display:flex; gap:52px; width:max-content; animation:tick 44s linear infinite;
    font-size:11.5px; letter-spacing:.3em; color:var(--faint); white-space:nowrap; }
  .ticker .k{ color:var(--accent-strong); }
  @keyframes tick{ to{ transform:translateX(-50%); } }

  .mini{ display:inline-block; margin-top:26px; font-size:12.5px; letter-spacing:.16em;
    color:var(--accent-strong); text-decoration:none; border-bottom:1px solid currentColor; padding-bottom:3px; }

  .secno{ position:absolute; top:84px; left:clamp(22px,8vw,130px); font-size:10px;
    letter-spacing:.3em; color:var(--faint); z-index:2; }

  .sm{ min-height:78vh; display:flex; align-items:center; }
  .sm .col{ text-align:center; max-width:760px; margin:0 auto; }
  .sa{ min-height:100vh; padding-top:16vh; }
  .tl{ margin-top:48px; border-left:1px solid var(--hair); padding-left:34px;
    display:flex; flex-direction:column; gap:32px; max-width:600px; }
  .ev{ position:relative; }
  .ev::before{ content:""; position:absolute; left:-39px; top:8px; width:9px; height:9px;
    border-radius:50%; background:var(--accent-strong); }
  .ev .yr{ font-family:"Noto Serif SC","Songti SC",serif; font-size:19px;
    color:var(--accent-strong); letter-spacing:.08em; margin-bottom:6px; }
  .ev p{ font-size:14px; color:var(--muted); line-height:1.9; }
  .todo{ margin-left:10px; font-size:10.5px; color:var(--accent-strong);
    border:1px dashed var(--accent-strong); border-radius:3px; padding:2px 7px; letter-spacing:.12em; }

  .col.wide{ max-width:1080px; }
  .sc{ min-height:125vh; padding-top:16vh; padding-bottom:8vh; }
  .grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:22px; margin-top:44px; }
  .card{ border:1px solid var(--hair); background:var(--chip); padding:20px 20px 18px; border-radius:3px; }
  .card .img{ height:118px; border:1px dashed var(--hair); border-radius:2px; display:flex; align-items:center;
    justify-content:center; font-size:10px; letter-spacing:.22em; color:var(--faint); margin-bottom:16px; }
  .photoph{ border:1px dashed var(--hair); border-radius:2px; display:flex; align-items:center;
    justify-content:center; font-size:10px; letter-spacing:.22em; color:var(--faint); }
  .shot{ width:100%; object-fit:cover; display:block; border-radius:2px;
    filter:sepia(.06) saturate(.94); }
  .card img.ill{ width:100%; height:150px; object-fit:cover; display:block;
    border-radius:2px; margin-bottom:16px; }
  .card h3, .cols h3, .coop h3{ font-family:"Noto Serif SC","Songti SC",serif; }
  .card h3{ font-size:17px; margin-bottom:8px; }
  .card p{ font-size:12.5px; line-height:1.85; color:var(--muted); }
  .card .tags{ margin-top:12px; display:flex; gap:6px; flex-wrap:wrap; }
  .card .tags span{ font-size:10.5px; letter-spacing:.12em; color:var(--accent-strong);
    border:1px solid var(--hair); border-radius:999px; padding:3px 9px; }
  .depts{ margin-top:34px; font-size:11.5px; letter-spacing:.2em; color:var(--faint); }

  .sg{ min-height:105vh; padding-top:16vh; }
  .cols{ display:grid; grid-template-columns:repeat(4,1fr); gap:26px; margin-top:44px; }
  .cols .co{ border-top:2px solid var(--accent-strong); padding-top:16px; }
  .cols h3{ font-size:15.5px; margin-bottom:10px; }
  .cols p{ font-size:12.5px; line-height:1.9; color:var(--muted); }

  .coop{ display:grid; grid-template-columns:repeat(3,1fr); gap:18px; margin-top:40px; text-align:left; }
  .coop .co{ border:1px solid var(--hair); background:var(--chip); padding:18px; border-radius:3px; }
  .coop h3{ font-size:15px; margin-bottom:8px; }
  .coop p{ font-size:12.5px; line-height:1.85; color:var(--muted); }

  .bigfoot{ position:relative; z-index:1; margin-top:4vh; padding:64px clamp(22px,8vw,130px) 40px;
    border-top:1px solid var(--hair); }
  .bigfoot .colz{ display:grid; grid-template-columns:repeat(4,minmax(130px,1fr)); gap:24px; max-width:1000px; }
  .bigfoot h4{ font-size:10.5px; letter-spacing:.32em; color:var(--accent-strong); margin-bottom:14px; font-weight:600; }
  .bigfoot a, .bigfoot span{ display:block; font-size:12.5px; color:var(--muted); text-decoration:none; line-height:2.15; }
  .legal{ margin-top:44px; font-size:10.5px; letter-spacing:.08em; color:var(--faint); line-height:2; }

  @media (max-width:860px){
    .grid{ grid-template-columns:1fr 1fr; } .cols{ grid-template-columns:1fr 1fr; }
    .coop{ grid-template-columns:1fr; } .bigfoot .colz{ grid-template-columns:1fr 1fr; }
  }
  @media (max-width:720px){
    .pts li{ font-size:13.5px; }
    .s5{ min-height:200vh; }
  }
  @media (max-width:560px){ .grid{ grid-template-columns:1fr; } }
  @media (prefers-reduced-motion:reduce){
    .s1 h1 .char{ animation:none; opacity:1; transform:none; }
    .cue::after{ animation:none; }
  }