:root {
    --bg0: #060B09;
    --surface: rgba(11, 24, 18, .78);
    --line: rgba(159, 225, 203, .13);
    --line-strong: rgba(159, 225, 203, .25);
    --ink: #E6EFE9;
    --ink-soft: #C2D2C8;
    --ink-2: #92A99C;
    --energy: #35E09A;
    --mint-light: #9FE1CB;
    --champagne: #C9AE6E;
    --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
  }
  * { box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body {
    margin: 0;
    min-height: 100vh;
    overflow-x: hidden;
    background-color: var(--bg0);
    background-image:
      radial-gradient(1100px 620px at 78% 9%, rgba(53,224,154,.085), transparent 70%),
      radial-gradient(1100px 760px at 8% 43%, rgba(28,112,88,.075), transparent 72%),
      radial-gradient(1200px 620px at 72% 76%, rgba(32,132,100,.065), transparent 72%),
      radial-gradient(1.5px 1.5px at 45px 65px, rgba(255,255,255,.30) 50%, transparent 51%),
      radial-gradient(1px 1px at 145px 175px, rgba(200,240,220,.26) 50%, transparent 51%),
      radial-gradient(2px 2px at 210px 105px, rgba(255,255,255,.12) 50%, transparent 51%),
      radial-gradient(1px 1px at 85px 225px, rgba(159,225,203,.22) 50%, transparent 51%),
      radial-gradient(1px 1px at 255px 35px, rgba(255,255,255,.14) 50%, transparent 51%),
      linear-gradient(180deg, #070D0A 0%, #081110 26%, #0A1512 52%, #081210 76%, #050907 100%);
    background-size: 100% 100%, 100% 100%, 100% 100%, 260px 260px, 200px 200px, 320px 320px, 220px 220px, 280px 280px, 100% 100%;
    background-repeat: no-repeat, no-repeat, no-repeat, repeat, repeat, repeat, repeat, repeat, no-repeat;
    background-attachment: fixed;
    color: var(--ink);
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
    line-height: 1.8;
  }
  body::after {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 20;
    pointer-events: none;
    opacity: .022;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E");
  }
  a { color: inherit; }
  :focus-visible { outline: 2px solid var(--energy); outline-offset: 4px; }
  .cosmos, .cosmos::before, .cosmos::after { position: fixed; inset: 0; pointer-events: none; }
  .cosmos { z-index: -1; overflow: hidden; }
  .cosmos::before {
    content: "";
    top: 8vh;
    left: -18vw;
    right: -18vw;
    height: 52vh;
    filter: blur(2px);
    opacity: .82;
    transform: rotate(-7deg);
    background:
      radial-gradient(ellipse 46% 18% at 52% 48%, rgba(126,255,211,.16), transparent 72%),
      radial-gradient(ellipse 62% 31% at 48% 50%, rgba(28,137,101,.15), transparent 74%),
      linear-gradient(104deg, transparent 21%, rgba(45,177,130,.045) 42%, rgba(143,255,217,.075) 50%, rgba(34,125,95,.04) 60%, transparent 78%);
    animation: galaxyDrift 20s ease-in-out infinite alternate;
  }
  .cosmos::after {
    content: "";
    top: 42vh;
    left: -10vw;
    right: -10vw;
    height: 70vh;
    opacity: .64;
    background:
      radial-gradient(ellipse 54% 20% at 70% 30%, rgba(72,218,167,.13), transparent 72%),
      radial-gradient(ellipse 46% 19% at 22% 66%, rgba(31,130,98,.12), transparent 76%),
      radial-gradient(1.1px 1.1px at 12% 20%, rgba(220,255,240,.45) 45%, transparent 55%),
      radial-gradient(1.4px 1.4px at 68% 42%, rgba(255,255,255,.35) 45%, transparent 55%),
      radial-gradient(1px 1px at 88% 73%, rgba(159,225,203,.32) 45%, transparent 55%);
    background-size: auto, auto, 420px 390px, 560px 490px, 470px 430px;
    animation: starsDrift 28s linear infinite alternate;
  }
  @keyframes galaxyDrift {
    from { transform: translate3d(-1.5%, -1%, 0) rotate(-7deg) scale(1); opacity: .68; }
    to { transform: translate3d(2%, 2%, 0) rotate(-5deg) scale(1.04); opacity: .9; }
  }
  @keyframes starsDrift { from { transform: translate3d(0, -1.5%, 0); } to { transform: translate3d(1.5%, 1%, 0); } }
  .topbar {
    position: sticky;
    top: 0;
    z-index: 12;
    border-bottom: 1px solid rgba(159,225,203,.09);
    background: rgba(6,11,9,.76);
    -webkit-backdrop-filter: blur(16px);
    backdrop-filter: blur(16px);
  }
  .topbar-inner {
    width: min(1160px, calc(100% - 48px));
    min-height: 70px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
  }
  .brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    font-family: "Songti SC", "Noto Serif SC", serif;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: 2.2px;
    white-space: nowrap;
  }
  .brand-logo {
    width: 30px;
    height: 30px;
    display: block;
    object-fit: cover;
    object-position: 50% 50%;
    clip-path: polygon(50% 0, 93% 25%, 93% 75%, 50% 100%, 7% 75%, 7% 25%);
    filter: drop-shadow(0 0 10px rgba(111,255,204,.22));
  }
  .back-home {
    min-height: 44px;
    padding: 0 17px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: 1px solid var(--line-strong);
    border-radius: 999px;
    text-decoration: none;
    color: var(--ink-soft);
    background: rgba(13,29,22,.56);
    font-size: 13px;
    transition: color .22s ease, border-color .22s ease, background .22s ease;
  }
  .back-home:hover { color: #06100B; border-color: var(--energy); background: var(--energy); }
  .hero {
    width: min(1160px, calc(100% - 48px));
    margin: 0 auto;
    padding: 92px 0 64px;
  }
  .eyebrow { margin: 0 0 20px; color: var(--mint-light); font-family: var(--mono); font-size: 11px; letter-spacing: 4px; text-transform: uppercase; }
  h1, h2 { font-family: "Songti SC", "Noto Serif SC", "Source Han Serif SC", serif; }
  h1 { max-width: 820px; margin: 0; font-size: clamp(36px, 5.2vw, 62px); line-height: 1.2; letter-spacing: 4px; font-weight: 600; color: #F0F5F1; }
  .hero-lead { max-width: 780px; margin: 24px 0 0; color: var(--ink-soft); font-size: 16px; }
  .hero-meta { margin-top: 28px; display: flex; flex-wrap: wrap; gap: 10px; }
  .hero-meta span { padding: 7px 12px; border: 1px solid var(--line); border-radius: 999px; background: rgba(8,20,15,.52); color: var(--ink-2); font-family: var(--mono); font-size: 11px; letter-spacing: .6px; }
  .notice {
    width: min(1160px, calc(100% - 48px));
    margin: 0 auto 34px;
    padding: 22px 24px;
    display: grid;
    grid-template-columns: 5px 1fr;
    gap: 18px;
    border: 1px solid rgba(201,174,110,.21);
    border-radius: 14px;
    background: linear-gradient(120deg, rgba(48,42,24,.42), rgba(11,25,19,.72));
    box-shadow: 0 18px 55px rgba(0,0,0,.22);
  }
  .notice::before { content: ""; border-radius: 999px; background: linear-gradient(180deg, var(--champagne), var(--energy)); box-shadow: 0 0 18px rgba(53,224,154,.2); }
  .notice strong { color: #F4E9C9; }
  .notice p { margin: 0; color: var(--ink-soft); font-size: 14px; }
  .page-layout { width: min(1160px, calc(100% - 48px)); margin: 0 auto 100px; display: grid; grid-template-columns: 250px minmax(0, 1fr); gap: 34px; align-items: start; }
  .toc {
    position: sticky;
    top: 100px;
    padding: 22px;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: rgba(9,21,16,.7);
    -webkit-backdrop-filter: blur(16px);
    backdrop-filter: blur(16px);
    box-shadow: 0 24px 70px rgba(0,0,0,.22), inset 0 1px 0 rgba(255,255,255,.025);
  }
  .toc-title { margin: 0 0 14px; color: var(--champagne); font-family: var(--mono); font-size: 10px; letter-spacing: 3px; text-transform: uppercase; }
  .toc ol { margin: 0; padding: 0; list-style: none; }
  .toc li + li { margin-top: 3px; }
  .toc a { min-height: 34px; display: flex; align-items: center; padding: 4px 8px; border-radius: 7px; text-decoration: none; color: var(--ink-2); font-size: 12px; line-height: 1.45; transition: color .2s ease, background .2s ease; }
  .toc a:hover { color: var(--mint-light); background: rgba(53,224,154,.06); }
  .document {
    min-width: 0;
    border: 1px solid var(--line);
    border-radius: 22px;
    background: linear-gradient(145deg, rgba(13,29,22,.88), rgba(7,17,13,.78));
    -webkit-backdrop-filter: blur(18px);
    backdrop-filter: blur(18px);
    box-shadow: 0 32px 90px rgba(0,0,0,.3), inset 0 1px 0 rgba(255,255,255,.035);
    overflow: hidden;
  }
  .doc-intro { padding: 32px 38px; border-bottom: 1px solid var(--line); background: radial-gradient(ellipse 68% 140% at 100% 0%, rgba(53,224,154,.09), transparent 72%), rgba(255,255,255,.012); }
  .doc-intro p { margin: 0; color: var(--ink-soft); font-size: 15px; }
  .doc-intro p + p { margin-top: 10px; }
  .article-list { padding: 4px 38px 34px; }
  .clause { scroll-margin-top: 96px; padding: 30px 0; border-bottom: 1px solid var(--line); }
  .clause:last-child { border-bottom: 0; }
  .clause-head { display: grid; grid-template-columns: 46px 1fr; gap: 14px; align-items: start; margin-bottom: 12px; }
  .clause-no { padding-top: 4px; color: var(--champagne); font-family: var(--mono); font-size: 11px; letter-spacing: 1.5px; }
  h2 { margin: 0; color: #EAF3ED; font-size: 19px; line-height: 1.45; letter-spacing: 1px; font-weight: 600; }
  .clause-body { padding-left: 60px; }
  .clause p, .clause li { color: #B7C8BE; font-size: 14px; line-height: 1.95; }
  .clause p { margin: 0; }
  .clause p + p { margin-top: 10px; }
  .clause ul { margin: 10px 0 0; padding-left: 20px; }
  .clause li + li { margin-top: 5px; }
  .clause strong { color: #E5F2EA; font-weight: 600; }
  .data-policy { margin-top: 14px; margin-bottom: 12px; padding: 16px 18px; border: 1px solid rgba(53,224,154,.22); border-radius: 12px; background: rgba(53,224,154,.045); }
  .data-policy strong { color: var(--energy); }
  .doc-footer { padding: 28px 38px 34px; border-top: 1px solid var(--line); background: rgba(4,12,8,.42); }
  .doc-footer p { margin: 0; color: var(--ink-2); font-size: 13px; }
  .doc-footer p + p { margin-top: 7px; }
  .site-footer { border-top: 1px solid rgba(159,225,203,.08); padding: 30px 0 38px; }
  .site-footer-inner { width: min(1160px, calc(100% - 48px)); margin: 0 auto; display: flex; justify-content: space-between; gap: 24px; color: #637B6E; font-family: var(--mono); font-size: 11px; letter-spacing: .8px; }
  .site-footer a { color: #86A797; text-underline-offset: 4px; }
  @media (max-width: 920px) {
    .page-layout { grid-template-columns: 1fr; }
    .toc { position: static; }
    .toc ol { columns: 2; column-gap: 20px; }
    .toc li { break-inside: avoid; }
  }
  @media (max-width: 640px) {
    .topbar-inner, .hero, .notice, .page-layout, .site-footer-inner { width: min(100% - 30px, 1160px); }
    .topbar-inner { min-height: 64px; gap: 12px; }
    .brand { font-size: 12px; letter-spacing: 1px; }
    .brand-logo { width: 27px; height: 27px; }
    .back-home { min-width: 44px; padding: 0 12px; }
    .back-home span:last-child { display: none; }
    .hero { padding: 70px 0 44px; }
    h1 { font-size: 36px; letter-spacing: 2px; }
    .hero-lead { font-size: 15px; }
    .notice { padding: 18px; gap: 14px; }
    .toc { padding: 18px; }
    .toc ol { columns: 1; }
    .document { border-radius: 18px; }
    .doc-intro, .doc-footer { padding: 25px 22px; }
    .article-list { padding: 4px 22px 26px; }
    .clause { padding: 26px 0; }
    .clause-head { grid-template-columns: 38px 1fr; gap: 10px; }
    .clause-body { padding-left: 48px; }
    h2 { font-size: 18px; }
    .clause p, .clause li { font-size: 14px; line-height: 1.9; }
    .site-footer-inner { flex-direction: column; gap: 8px; }
  }
  @media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { animation: none !important; transition: none !important; }
  }
  @media print {
    body { background: #fff; color: #111; }
    .cosmos, .topbar, .toc, .site-footer { display: none; }
    .hero, .notice, .page-layout { width: 100%; margin-left: 0; margin-right: 0; }
    .hero { padding: 20px 0; }
    .hero h1, .clause h2 { color: #111; }
    .hero p, .notice p, .doc-intro p, .clause p, .clause li, .doc-footer p { color: #333; }
    .page-layout { display: block; }
    .document, .notice { border: 1px solid #ccc; box-shadow: none; background: #fff; }
  }