@charset "utf-8";
/* ==========================================================================
   鼎上娱乐 · AI 漫剧制作  |  https://www.jotou.com/
   设计系统 v1.0「纸上工程」
   类名前缀 .ds-  |  直角构件 / 发丝线 / 索引编号 / 全站无位图资产
   色系：纸白 #f2efe8 / 墨 #161a18 / 松绿 #0f5f4e / 赭金 #b8842c
   层叠顺序：reset → tokens → base → layout → modules → utilities
   ========================================================================== */

@layer reset, tokens, base, layout, modules, utilities;

@layer reset {
  *,
  *::before,
  *::after { box-sizing: border-box; }

  html { -webkit-text-size-adjust: 100%; }

  body,
  h1, h2, h3, h4, p, figure, blockquote, dl, dd, ol, ul, fieldset {
    margin: 0;
  }

  ol, ul { padding: 0; list-style: none; }

  img, svg, video { display: block; max-width: 100%; }

  button, input, select, textarea { font: inherit; color: inherit; }

  button { background: none; border: 0; cursor: pointer; }

  a { color: inherit; text-decoration: none; }

  table { border-collapse: collapse; width: 100%; }
}

@layer tokens {
  :root {
    /* 色彩 */
    --ds-paper: #f2efe8;
    --ds-paper-2: #e9e5da;
    --ds-paper-3: #dfdacd;
    --ds-ink: #161a18;
    --ds-ink-2: #2b322e;
    --ds-ink-3: #444c47;
    --ds-muted: #6d746c;
    --ds-jade: #0f5f4e;
    --ds-jade-2: #177a64;
    --ds-jade-soft: #d9e7e0;
    --ds-amber: #b8842c;
    --ds-amber-soft: #f0e4cd;
    --ds-red: #9c3527;
    --ds-line: rgba(22, 26, 24, 0.16);
    --ds-line-soft: rgba(22, 26, 24, 0.08);
    --ds-line-strong: rgba(22, 26, 24, 0.34);

    /* 字体 */
    --ds-serif: "Songti SC", "Noto Serif CJK SC", "Source Han Serif SC", "STSong", "SimSun", serif;
    --ds-sans: "PingFang SC", "HarmonyOS Sans SC", "MiSans", "Microsoft YaHei", "Segoe UI", system-ui, sans-serif;
    --ds-mono: "Cascadia Mono", "JetBrains Mono", "SFMono-Regular", "Consolas", "Courier New", monospace;

    /* 尺度 */
    --ds-rail: 244px;
    --ds-gutter: clamp(18px, 4.4vw, 64px);
    --ds-measure: 1180px;
    --ds-ease: cubic-bezier(0.22, 0.68, 0.16, 1);
  }
}

@layer base {
  html {
    scroll-behavior: smooth;
    scroll-padding-top: 84px;
  }

  body {
    background-color: var(--ds-paper);
    color: var(--ds-ink-2);
    font-family: var(--ds-sans);
    font-size: 16px;
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }

  /* 页面底纹：竖排发丝网格，模拟制稿纸 */
  body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background-image:
      repeating-linear-gradient(90deg, var(--ds-line-soft) 0 1px, transparent 1px 96px),
      repeating-linear-gradient(0deg, var(--ds-line-soft) 0 1px, transparent 1px 96px);
    opacity: 0.5;
    mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.85), rgba(0, 0, 0, 0.2) 72%, transparent);
  }

  h1, h2, h3, h4 {
    font-family: var(--ds-serif);
    font-weight: 600;
    color: var(--ds-ink);
    line-height: 1.24;
    letter-spacing: 0.01em;
  }

  ::selection { background: var(--ds-jade); color: var(--ds-paper); }

  :focus-visible {
    outline: 2px solid var(--ds-jade-2);
    outline-offset: 3px;
  }

  .ds-skip {
    position: absolute;
    left: 12px;
    top: -60px;
    z-index: 999;
    padding: 10px 18px;
    background: var(--ds-ink);
    color: var(--ds-paper);
    font-size: 13px;
    transition: top 0.2s var(--ds-ease);
  }

  .ds-skip:focus { top: 12px; }
}

@layer layout {
  .ds-rail {
    position: fixed;
    inset: 0 auto 0 0;
    z-index: 40;
    width: var(--ds-rail);
    display: flex;
    flex-direction: column;
    gap: 26px;
    padding: 30px 22px 22px;
    background: var(--ds-paper);
    border-right: 1px solid var(--ds-line);
  }

  .ds-rail__brand {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding-bottom: 22px;
    border-bottom: 1px solid var(--ds-line);
  }

  .ds-rail__mark {
    flex: 0 0 auto;
    width: 44px;
    height: 44px;
    color: var(--ds-jade);
  }

  .ds-rail__word {
    display: block;
    font-family: var(--ds-serif);
    font-size: 20px;
    font-weight: 600;
    color: var(--ds-ink);
    letter-spacing: 0.14em;
    line-height: 1.3;
  }

  .ds-rail__tag {
    display: block;
    margin-top: 4px;
    font-family: var(--ds-mono);
    font-size: 10px;
    letter-spacing: 0.12em;
    color: var(--ds-muted);
    text-transform: uppercase;
  }

  .ds-nav__label {
    font-family: var(--ds-mono);
    font-size: 10px;
    letter-spacing: 0.2em;
    color: var(--ds-muted);
    text-transform: uppercase;
    margin-bottom: 10px;
  }

  .ds-nav__list {
    display: flex;
    flex-direction: column;
    border-top: 1px solid var(--ds-line-soft);
  }

  .ds-nav__link {
    display: flex;
    align-items: baseline;
    gap: 10px;
    padding: 9px 8px 9px 2px;
    border-bottom: 1px solid var(--ds-line-soft);
    font-size: 14px;
    color: var(--ds-ink-3);
    transition: color 0.24s var(--ds-ease), padding-left 0.24s var(--ds-ease), background 0.24s var(--ds-ease);
  }

  .ds-nav__link span {
    font-family: var(--ds-mono);
    font-size: 10px;
    letter-spacing: 0.08em;
    color: var(--ds-muted);
  }

  .ds-nav__link:hover {
    color: var(--ds-ink);
    padding-left: 8px;
    background: var(--ds-paper-2);
  }

  .ds-nav__link[aria-current="page"] {
    background: var(--ds-ink);
    color: var(--ds-paper);
    padding-left: 10px;
  }

  .ds-nav__link[aria-current="page"] span { color: var(--ds-jade-soft); }

  .ds-rail__foot {
    margin-top: auto;
    padding-top: 18px;
    border-top: 1px solid var(--ds-line);
    font-size: 12px;
    line-height: 1.7;
    color: var(--ds-muted);
  }

  .ds-rail__foot strong {
    display: block;
    font-family: var(--ds-mono);
    font-size: 10px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--ds-ink-3);
    margin-bottom: 4px;
  }

  .ds-rail__foot a { border-bottom: 1px solid var(--ds-line-strong); }
  .ds-rail__foot a:hover { color: var(--ds-jade); }

  .ds-shell {
    position: relative;
    z-index: 1;
    margin-left: var(--ds-rail);
    min-width: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
  }

  .ds-main { flex: 1 0 auto; min-width: 0; }

  .ds-wrap {
    width: 100%;
    max-width: var(--ds-measure);
    margin: 0 auto;
    padding: 0 var(--ds-gutter);
  }

  .ds-topbar {
    display: none;
    position: sticky;
    top: 0;
    z-index: 50;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 16px;
    background: var(--ds-paper);
    border-bottom: 1px solid var(--ds-line);
  }

  .ds-topbar__brand {
    display: flex;
    align-items: center;
    gap: 9px;
    font-family: var(--ds-serif);
    font-size: 17px;
    font-weight: 600;
    letter-spacing: 0.1em;
    color: var(--ds-ink);
  }

  .ds-topbar__brand svg { width: 26px; height: 26px; color: var(--ds-jade); }

  .ds-topbar__menu {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 7px 12px;
    border: 1px solid var(--ds-line-strong);
    font-family: var(--ds-mono);
    font-size: 11px;
    letter-spacing: 0.14em;
    color: var(--ds-ink);
  }

  .ds-topbar__menu i {
    display: block;
    width: 14px;
    height: 8px;
    border-top: 1px solid currentColor;
    border-bottom: 1px solid currentColor;
  }

  .ds-drawer {
    position: fixed;
    inset: 0 auto 0 0;
    z-index: 80;
    width: min(320px, 86vw);
    padding: 22px 20px;
    background: var(--ds-paper);
    border-right: 1px solid var(--ds-line-strong);
    transform: translateX(-102%);
    transition: transform 0.32s var(--ds-ease);
    overflow-y: auto;
  }

  .ds-drawer.is-open { transform: none; }

  .ds-drawer__head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--ds-line);
    margin-bottom: 16px;
  }

  .ds-drawer__head p {
    font-family: var(--ds-mono);
    font-size: 10px;
    letter-spacing: 0.2em;
    color: var(--ds-muted);
  }

  .ds-drawer__close {
    padding: 6px 10px;
    border: 1px solid var(--ds-line-strong);
    font-family: var(--ds-mono);
    font-size: 11px;
  }

  .ds-scrim {
    position: fixed;
    inset: 0;
    z-index: 70;
    background: rgba(22, 26, 24, 0.45);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s var(--ds-ease), visibility 0.3s;
  }

  .ds-scrim.is-open { opacity: 1; visibility: visible; }

  body.is-locked { overflow: hidden; }

  .ds-foot {
    border-top: 1px solid var(--ds-line-strong);
    margin-top: 76px;
    padding: 40px 0 26px;
    background: var(--ds-paper-2);
  }

  .ds-foot__grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
    gap: 32px;
  }

  .ds-foot__title {
    font-family: var(--ds-mono);
    font-size: 10px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--ds-muted);
    margin-bottom: 12px;
  }

  .ds-foot__brand {
    font-family: var(--ds-serif);
    font-size: 22px;
    letter-spacing: 0.12em;
    color: var(--ds-ink);
    margin-bottom: 8px;
  }

  .ds-foot p,
  .ds-foot li,
  .ds-foot a { font-size: 13px; line-height: 1.9; color: var(--ds-ink-3); }

  .ds-foot a:hover { color: var(--ds-jade); }

  .ds-foot__list li { padding: 3px 0; }

  .ds-foot__notice {
    margin-top: 34px;
    padding-top: 18px;
    border-top: 1px solid var(--ds-line);
    display: flex;
    flex-wrap: wrap;
    gap: 8px 22px;
    align-items: center;
    justify-content: space-between;
    font-size: 12px;
    color: var(--ds-muted);
  }

  .ds-foot__notice p { font-size: 12px; color: var(--ds-muted); }

  .ds-foot__notice span { font-family: var(--ds-mono); letter-spacing: 0.06em; }

  @media (max-width: 1080px) {
    .ds-rail { display: none; }
    .ds-topbar { display: flex; }
    .ds-shell { margin-left: 0; }
    .ds-foot__grid { grid-template-columns: 1fr 1fr; gap: 26px; }
  }

  @media (max-width: 620px) {
    .ds-foot { padding-top: 30px; }
    .ds-foot__grid { grid-template-columns: 1fr; }
  }
}

@layer utilities {
  .ds-sr {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
    border: 0;
  }

  .ds-mono {
    font-family: var(--ds-mono);
    font-size: 11px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--ds-muted);
  }

  .ds-jade { color: var(--ds-jade); }

  .ds-reveal {
    opacity: 0;
    transform: translateY(14px);
    transition: opacity 0.6s var(--ds-ease), transform 0.6s var(--ds-ease);
  }

  .ds-reveal.is-in { opacity: 1; transform: none; }

  @media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after {
      animation-duration: 0.001ms !important;
      transition-duration: 0.001ms !important;
    }
    .ds-reveal { opacity: 1; transform: none; }
  }
}