* { margin: 0; padding: 0; box-sizing: border-box; }
  :root {
    --leather: #4a2f1d;
    --leather-dark: #33200f;
    --leather-line: #6b4530;
    --paper: #f5ecd8;
    --paper-deep: #ecdfc3;
    --paper-line: #d9c9a8;
    --ink: #3b2a1a;
    --ink-soft: #6b5540;
    --thread: #b5472c;
    --stamp: #a8552f;
    --gold: #c69b4e;
  }
  html { scroll-behavior: smooth; }
  body {
    font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    background: var(--leather-dark);
    color: var(--ink);
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }
  a { color: inherit; text-decoration: none; }
  img { display: block; max-width: 100%; }

  /* ============ 顶部导航 ============ */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: linear-gradient(180deg, #3d2614 0%, #2c1a0b 100%);
    border-bottom: 2px solid var(--leather-line);
    box-shadow: 0 3px 14px rgba(0,0,0,.5);
  }
  .header-inner {
    max-width: 1180px;
    margin: 0 auto;
    padding: 10px 18px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
  }
  .brand {
    display: flex;
    align-items: center;
    gap: 9px;
    color: var(--paper);
    font-size: 18px;
    font-weight: 700;
    letter-spacing: 1px;
    white-space: nowrap;
  }
  .brand img { height: 32px; width: auto; }
  .nav-toggle {
    display: none;
    background: transparent;
    border: 1px solid var(--leather-line);
    color: var(--paper);
    font-size: 14px;
    padding: 5px 11px;
    border-radius: 5px;
    cursor: pointer;
  }
  .nav-list {
    display: flex;
    flex-wrap: wrap;
    gap: 2px;
    list-style: none;
    justify-content: flex-end;
  }
  .nav-list a {
    display: block;
    color: #e8d9bf;
    font-size: 12.5px;
    padding: 5px 8px;
    border-radius: 4px;
    transition: background .2s, color .2s;
  }
  .nav-list a:hover { background: var(--leather-line); color: #fff; }

  /* ============ 首屏 ============ */
  .hero {
    position: relative;
    background:
      radial-gradient(circle at 82% 12%, rgba(198,155,78,.18), transparent 55%),
      linear-gradient(160deg, #3f2715 0%, #2a190a 70%, #241407 100%);
    color: var(--paper);
    padding: 48px 18px 64px;
    overflow: hidden;
  }
  .hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
      repeating-linear-gradient(90deg, rgba(255,255,255,.028) 0 1px, transparent 1px 9px);
    pointer-events: none;
  }
  .hero-inner {
    max-width: 1180px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr;
    gap: 34px;
    position: relative;
  }
  .hero-copy { max-width: 620px; }
  .kicker {
    display: inline-block;
    font-size: 12px;
    letter-spacing: 3px;
    color: var(--gold);
    border-bottom: 1px dashed var(--gold);
    padding-bottom: 3px;
    margin-bottom: 16px;
  }
  .hero h1 {
    font-size: 28px;
    line-height: 1.35;
    font-weight: 800;
    letter-spacing: .5px;
    margin-bottom: 16px;
    color: #fdf6e6;
  }
  .hero h1 em {
    font-style: normal;
    color: var(--gold);
  }
  .hero-desc {
    font-size: 14.5px;
    color: #d8c6aa;
    margin-bottom: 24px;
    max-width: 540px;
  }
  .btn-row { display: flex; flex-wrap: wrap; gap: 12px; }
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 700;
    letter-spacing: .5px;
    transition: transform .18s, box-shadow .18s;
    border: none;
    cursor: pointer;
  }
  .btn:hover { transform: translateY(-2px); }
  .btn-android {
    background: linear-gradient(180deg, #e9c97a, #c69b4e);
    color: #3a2408;
    box-shadow: 0 6px 18px rgba(198,155,78,.35);
  }
  .btn-ios {
    background: var(--paper);
    color: var(--leather-dark);
    box-shadow: 0 6px 18px rgba(0,0,0,.35);
  }
  .btn-note {
    font-size: 12px;
    color: #b9a486;
    margin-top: 14px;
  }
  .hero-figure {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: flex-start;
  }
  .polaroid {
    background: #fbf5e6;
    padding: 10px 10px 34px;
    box-shadow: 0 14px 30px rgba(0,0,0,.5);
    transform: rotate(-2deg);
    max-width: 250px;
  }
  .polaroid img { width: 100%; height: auto; }
  .polaroid .cap {
    font-size: 12px;
    color: var(--ink-soft);
    text-align: center;
    padding-top: 8px;
    font-style: italic;
  }
  .polaroid.p2 {
    position: absolute;
    right: 0;
    bottom: -28px;
    max-width: 168px;
    transform: rotate(4deg);
  }

  /* ============ 通用纸张区块 ============ */
  .paper-wrap { background: var(--leather-dark); padding: 0 0 50px; }
  .ledger {
    max-width: 1180px;
    margin: 0 auto;
    background: var(--paper);
    background-image:
      repeating-linear-gradient(180deg, transparent 0 27px, var(--paper-line) 27px 28px);
    border-left: 14px solid var(--leather);
    border-right: 14px solid var(--leather);
    box-shadow: 0 0 0 2px var(--leather-line), 0 20px 46px rgba(0,0,0,.55);
    position: relative;
  }
  .rings {
    position: absolute;
    left: -22px;
    top: 40px;
    bottom: 40px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    pointer-events: none;
  }
  .rings span {
    width: 16px;
    height: 34px;
    border: 3px solid #8d7355;
    border-right: none;
    border-radius: 12px 0 0 12px;
    box-shadow: inset 2px 0 3px rgba(0,0,0,.3);
  }
  section.chapter {
    padding: 44px 26px 46px;
    border-bottom: 1px dashed var(--paper-line);
    scroll-margin-top: 74px;
  }
  section.chapter:last-of-type { border-bottom: none; }
  .chapter-head {
    display: flex;
    align-items: baseline;
    gap: 12px;
    margin-bottom: 8px;
    flex-wrap: wrap;
  }
  .chapter-no {
    font-size: 12px;
    letter-spacing: 2px;
    color: var(--thread);
    font-weight: 700;
    border: 1px solid var(--thread);
    border-radius: 3px;
    padding: 1px 7px;
    flex: none;
  }
  .chapter h2 {
    font-size: 22px;
    font-weight: 800;
    color: var(--ink);
    letter-spacing: .5px;
    position: relative;
  }
  .chapter h2::after {
    content: "";
    display: block;
    width: 42px;
    height: 3px;
    background: var(--thread);
    margin-top: 7px;
    border-radius: 2px;
  }
  .lead {
    font-size: 14.5px;
    color: var(--ink-soft);
    margin: 14px 0 26px;
    max-width: 760px;
  }
  .hand-note {
    display: inline-block;
    font-size: 13px;
    color: var(--thread);
    border-bottom: 1px solid var(--thread);
    transform: rotate(-1.2deg);
    margin-top: 6px;
  }

  /* ============ 海报卡片墙 ============ */
  .poster-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
  }
  .poster-card {
    background: #fdf8eb;
    border: 1px solid var(--paper-line);
    border-radius: 4px;
    padding: 8px 8px 12px;
    box-shadow: 2px 3px 0 rgba(90,62,36,.13);
    position: relative;
    transition: transform .25s, box-shadow .25s;
  }
  .poster-card:hover { transform: translateY(-4px) rotate(-.6deg); box-shadow: 4px 8px 0 rgba(90,62,36,.18); }
  .poster-card img {
    width: 100%;
    aspect-ratio: 3 / 4;
    object-fit: cover;
    border-radius: 2px;
    background: #d8c8aa;
  }
  .poster-card .tag {
    position: absolute;
    top: 14px;
    left: 14px;
    background: var(--thread);
    color: #fff8ea;
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 2px;
    letter-spacing: 1px;
  }
  .poster-card h3 {
    font-size: 14.5px;
    margin: 9px 2px 3px;
    color: var(--ink);
    font-weight: 700;
  }
  .poster-card p {
    font-size: 12.5px;
    color: var(--ink-soft);
    line-height: 1.6;
    padding: 0 2px;
  }

  /* ============ 横向滑动墙 ============ */
  .scroll-strip {
    display: flex;
    gap: 14px;
    overflow-x: auto;
    padding: 4px 2px 16px;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
  }
  .scroll-strip::-webkit-scrollbar { height: 7px; }
  .scroll-strip::-webkit-scrollbar-thumb { background: var(--paper-line); border-radius: 4px; }
  .strip-item {
    flex: 0 0 148px;
    scroll-snap-align: start;
    background: #fdf8eb;
    border: 1px solid var(--paper-line);
    padding: 6px 6px 9px;
    border-radius: 3px;
  }
  .strip-item img {
    width: 100%;
    aspect-ratio: 3 / 4;
    object-fit: cover;
    border-radius: 2px;
  }
  .strip-item span {
    display: block;
    font-size: 12px;
    color: var(--ink);
    margin-top: 6px;
    text-align: center;
  }

  /* ============ 图文并排 ============ */
  .duo {
    display: grid;
    grid-template-columns: 1fr;
    gap: 22px;
    align-items: start;
  }
  .duo-figure {
    background: #fdf8eb;
    padding: 9px 9px 26px;
    border: 1px solid var(--paper-line);
    box-shadow: 0 8px 20px rgba(90,62,36,.16);
    transform: rotate(-1.5deg);
  }
  .duo-figure img { width: 100%; border-radius: 2px; }
  .duo-text p { font-size: 14px; color: var(--ink-soft); margin-bottom: 12px; }
  .duo-text p strong { color: var(--ink); }

  /* ============ 步骤 ============ */
  .steps { list-style: none; counter-reset: step; display: grid; gap: 14px; }
  .steps li {
    counter-increment: step;
    position: relative;
    padding: 14px 16px 14px 58px;
    background: #fdf8eb;
    border-left: 3px solid var(--thread);
    border-radius: 3px;
    font-size: 14px;
    color: var(--ink-soft);
    box-shadow: 1px 2px 0 rgba(90,62,36,.1);
  }
  .steps li::before {
    content: counter(step, decimal-leading-zero);
    position: absolute;
    left: 14px;
    top: 12px;
    font-size: 20px;
    font-weight: 800;
    color: var(--thread);
    font-family: Georgia, serif;
  }
  .steps li b { display: block; color: var(--ink); font-size: 14.5px; margin-bottom: 2px; }

  /* ============ 滚动评论 ============ */
  .comment-marquee {
    display: flex;
    flex-direction: column;
    gap: 10px;
    overflow: hidden;
    mask-image: linear-gradient(90deg, transparent, #000 4%, #000 96%, transparent);
    -webkit-mask-image: linear-gradient(90deg, transparent, #000 4%, #000 96%, transparent);
  }
  .comment-row { display: flex; gap: 12px; width: max-content; animation: slide-left 42s linear infinite; }
  .comment-row.reverse { animation: slide-right 48s linear infinite; }
  .comment-row:hover { animation-play-state: paused; }
  .comment-card {
    flex: none;
    width: 236px;
    background: #fdf8eb;
    border: 1px solid var(--paper-line);
    border-radius: 6px;
    padding: 11px 13px;
    box-shadow: 1px 2px 0 rgba(90,62,36,.12);
  }
  .comment-card .who { font-size: 12.5px; font-weight: 700; color: var(--thread); margin-bottom: 3px; }
  .comment-card .txt { font-size: 12.5px; color: var(--ink-soft); line-height: 1.6; }
  @keyframes slide-left { from { transform: translateX(0); } to { transform: translateX(-50%); } }
  @keyframes slide-right { from { transform: translateX(-50%); } to { transform: translateX(0); } }
  @media (prefers-reduced-motion: reduce) { .comment-row { animation: none; } }

  /* ============ 排行榜 ============ */
  .rank-list { list-style: none; display: grid; gap: 10px; counter-reset: rank; }
  .rank-list li {
    counter-increment: rank;
    display: flex;
    align-items: center;
    gap: 14px;
    background: #fdf8eb;
    border-radius: 4px;
    padding: 11px 14px;
    border: 1px solid var(--paper-line);
  }
  .rank-list li::before {
    content: counter(rank, decimal-leading-zero);
    font-family: Georgia, serif;
    font-size: 19px;
    font-weight: 800;
    color: var(--stamp);
    min-width: 34px;
  }
  .rank-meta b { display: block; font-size: 14.5px; color: var(--ink); }
  .rank-meta span { font-size: 12.5px; color: var(--ink-soft); }

  /* ============ 问答 ============ */
  .faq { display: grid; gap: 12px; }
  .faq details {
    background: #fdf8eb;
    border: 1px solid var(--paper-line);
    border-radius: 4px;
    padding: 0;
    overflow: hidden;
  }
  .faq summary {
    cursor: pointer;
    padding: 13px 40px 13px 16px;
    font-size: 14.5px;
    font-weight: 700;
    color: var(--ink);
    list-style: none;
    position: relative;
  }
  .faq summary::-webkit-details-marker { display: none; }
  .faq summary::after {
    content: "+";
    position: absolute;
    right: 16px;
    top: 11px;
    font-size: 19px;
    color: var(--thread);
    font-weight: 700;
    transition: transform .2s;
  }
  .faq details[open] summary::after { transform: rotate(45deg); }
  .faq .answer { padding: 0 16px 15px; font-size: 13.5px; color: var(--ink-soft); }

  /* ============ 标签墙 ============ */
  .topic-tags { display: flex; flex-wrap: wrap; gap: 9px; }
  .topic-tags span {
    font-size: 13px;
    color: var(--ink);
    background: #fdf8eb;
    border: 1px solid var(--paper-line);
    border-radius: 20px;
    padding: 5px 14px;
  }

  /* ============ 底部 ============ */
  .site-footer {
    background: var(--leather-dark);
    color: #a08e76;
    padding: 30px 18px 26px;
    font-size: 12px;
    line-height: 1.9;
  }
  .footer-inner { max-width: 1180px; margin: 0 auto; }
  .footer-inner p { margin-bottom: 6px; }
  .site-footer a { color: #bcaa8f; border-bottom: 1px dotted #7a6549; }
  .footer-search {
    border-top: 1px dashed #5b452d;
    padding-top: 14px;
    margin-top: 14px;
    font-size: 12px;
    color: #8d7a60;
    word-spacing: 2px;
  }
  .footer-search b { color: #bcaa8f; font-weight: 600; }

  /* ============ 遮罩弹窗 ============ */
  .ios-modal {
    position: fixed;
    inset: 0;
    z-index: 200;
    background: rgba(20,12,5,.78);
    display: none;
    align-items: center;
    justify-content: center;
    padding: 22px;
  }
  .ios-modal.open { display: flex; }
  .ios-modal-box {
    background: var(--paper);
    border-radius: 8px;
    max-width: 420px;
    width: 100%;
    padding: 24px 20px 20px;
    box-shadow: 0 22px 50px rgba(0,0,0,.6);
    position: relative;
  }
  .ios-modal-box h3 { font-size: 16px; color: var(--ink); margin-bottom: 12px; line-height: 1.5; }
  .ios-link-field {
    display: flex;
    align-items: stretch;
    border: 1px dashed var(--paper-line);
    border-radius: 5px;
    background: #fffaf0;
    overflow: hidden;
  }
  .ios-link-field input {
    flex: 1;
    border: none;
    background: transparent;
    padding: 11px 12px;
    font-size: 12.5px;
    color: var(--ink);
    outline: none;
    font-family: inherit;
    min-width: 0;
  }
  .ios-link-field button {
    border: none;
    background: var(--leather);
    color: var(--paper);
    font-size: 13px;
    padding: 0 16px;
    cursor: pointer;
    font-weight: 700;
  }
  .modal-close {
    position: absolute;
    top: 8px;
    right: 12px;
    background: none;
    border: none;
    font-size: 22px;
    color: var(--ink-soft);
    cursor: pointer;
    line-height: 1;
  }
  .modal-tip { font-size: 12px; color: var(--ink-soft); margin-top: 10px; }

  /* ============ 响应式 ============ */
  @media (min-width: 768px) {
    .hero { padding: 60px 26px 78px; }
    .hero h1 { font-size: 36px; }
    .hero-inner { grid-template-columns: 1.15fr .85fr; align-items: center; gap: 40px; }
    .polaroid { max-width: 300px; }
    .polaroid.p2 { max-width: 200px; bottom: -40px; }
    section.chapter { padding: 54px 46px 56px; }
    .chapter h2 { font-size: 26px; }
    .poster-grid { grid-template-columns: repeat(3, 1fr); }
    .duo { grid-template-columns: .8fr 1.2fr; gap: 30px; }
    .strip-item { flex-basis: 172px; }
    .ledger { border-left-width: 22px; border-right-width: 22px; }
  }
  @media (min-width: 1024px) {
    .chapter { padding: 60px 64px 62px; }
    .poster-grid { grid-template-columns: repeat(4, 1fr); }
    .chapter h2 { font-size: 28px; }
    .hero h1 { font-size: 42px; }
    .nav-list a { font-size: 13px; padding: 6px 10px; }
  }
  @media (max-width: 860px) {
    .nav-toggle { display: block; }
    .site-nav { flex-basis: 100%; }
    .nav-list {
      display: none;
      flex-direction: column;
      gap: 0;
      padding: 8px 0 4px;
      border-top: 1px solid var(--leather-line);
      margin-top: 8px;
    }
    .nav-list.open { display: flex; }
    .nav-list a { padding: 9px 6px; font-size: 14px; }
    .header-inner { flex-wrap: wrap; }
  }