/* ============ Design tokens: paper / ink / signal orange ============ */
    :root {
      --paper: #f7f3ea;
      --paper-2: #efe9db;
      --ink: #171512;
      --ink-soft: #5c574d;
      --line: #171512;
      --line-soft: rgba(23, 21, 18, 0.16);
      --orange: #ff4d00;
      --orange-dark: #d63f00;
      --green: #1c7c4d;
      --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
      --font-display: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
      --font-mono: "IBM Plex Mono", ui-monospace, monospace;
    }

    * { margin: 0; padding: 0; box-sizing: border-box; }
    html { scroll-behavior: smooth; }

    body {
      background: var(--paper);
      color: var(--ink);
      font-family: var(--font-sans);
      line-height: 1.75;
      overflow-x: hidden;
    }

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

    a { color: inherit; text-decoration: none; }
    ul { list-style: none; }
    button { font-family: inherit; }

    .container { width: min(1200px, calc(100% - 40px)); margin: 0 auto; }
    .mono { font-family: var(--font-mono); }

    /* Paper grain via subtle repeating gradient */
    body::before {
      content: "";
      position: fixed;
      inset: 0;
      pointer-events: none;
      z-index: 0;
      background-image: radial-gradient(rgba(23, 21, 18, 0.045) 1px, transparent 1px);
      background-size: 22px 22px;
    }
    main, header, footer, .ticker { position: relative; z-index: 1; }

    /* ============ Scroll reveal ============ */
    .reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s cubic-bezier(.22,1,.36,1); }
    .reveal.on { opacity: 1; transform: none; }

    /* ============ Top ticker (kept) ============ */
    .ticker {
      background: var(--orange);
      color: var(--paper);
      font-family: var(--font-mono);
      font-size: 12.5px;
      font-weight: 700;
      letter-spacing: 1px;
      overflow: hidden;
      white-space: nowrap;
      padding: 7px 0;
      border-bottom: 2px solid var(--ink);
    }
    .ticker-track { display: inline-block; animation: ticker-scroll 32s linear infinite; }
    .ticker-track span { margin: 0 26px; }
    @keyframes ticker-scroll { from { transform: translateX(0); } to { transform: translateX(-50%); } }

    /* ============ Nav ============ */
    .nav {
      position: sticky;
      top: 0;
      z-index: 100;
      background: var(--paper);
      border-bottom: 2px solid var(--ink);
    }
    .nav-inner { display: flex; align-items: stretch; height: 62px; }
    .logo {
      display: flex; align-items: center; gap: 10px;
      font-family: var(--font-display);
      font-weight: 900; font-size: 21px; letter-spacing: 1px;
      padding-right: 28px;
      border-right: 2px solid var(--ink);
    }
    .logo img {
      display: block;
      width: 32px;
      height: 32px;
      object-fit: contain;
    }
    .nav-links { display: flex; align-items: stretch; }
    .nav-links a {
      display: flex; align-items: center;
      padding: 0 22px;
      font-size: 14.5px; font-weight: 500;
      border-right: 1px solid var(--line-soft);
      transition: background .15s, color .15s;
    }
    .nav-links a:hover { background: var(--ink); color: var(--paper); }
    .nav-links a.active { background: var(--orange); color: var(--paper); border-right-color: var(--ink); }
    .nav-drop { position: relative; display: flex; align-items: stretch; border-right: 1px solid var(--line-soft); }
    .nav-drop-trigger { display: flex; align-items: center; gap: 6px; height: 100%; padding: 0 22px; font-size: 14.5px; font-weight: 500; transition: background .15s, color .15s; }
    .nav-drop-trigger.active { background: var(--orange); color: var(--paper); }
    .nav-drop:hover .nav-drop-trigger { background: var(--ink); color: var(--paper); }
    .nav-drop-caret { flex-shrink: 0; transition: transform .15s; }
    .nav-drop:hover .nav-drop-caret { transform: rotate(180deg); }
    .nav-drop-menu { position: absolute; left: 0; top: 100%; background: var(--paper); border: 2px solid var(--ink); box-shadow: 5px 5px 0 var(--ink); min-width: 190px; display: none; z-index: 110; }
    .nav-drop:hover .nav-drop-menu { display: block; }
    .nav-drop-menu a { display: block; padding: 11px 16px; font-size: 13.5px; font-weight: 500; border-bottom: 1px solid var(--line-soft); color: var(--ink); }
    .nav-drop-menu a:last-child { border-bottom: none; }
    .nav-drop-menu a:hover { background: var(--paper-2); color: var(--orange); }
    .nav-right { margin-left: auto; display: flex; align-items: center; gap: 10px; }
    .lang-switch { position: relative; }
    .lang-btn {
      display: flex; align-items: center; gap: 7px;
      background: transparent; border: 1.5px solid var(--ink);
      color: var(--ink); padding: 7px 13px;
      font-size: 13px; font-family: var(--font-mono);
      cursor: pointer; transition: background .15s, color .15s;
    }
    .lang-btn:hover { background: var(--ink); color: var(--paper); }
    .lang-menu {
      position: absolute; right: 0; top: calc(100% + 10px);
      background: var(--paper); border: 2px solid var(--ink);
      box-shadow: 5px 5px 0 var(--ink);
      min-width: 150px; display: none;
    }
    .lang-menu.open { display: block; }
    .lang-menu a {
      display: block; padding: 9px 14px; font-size: 13.5px; cursor: pointer;
      border-bottom: 1px solid var(--line-soft);
      text-decoration: none; color: inherit;
    }
    .lang-menu a:last-child { border-bottom: none; }
    .lang-menu a:hover { background: var(--paper-2); }
    .lang-menu a.current { background: var(--orange); color: var(--paper); }
    .nav-toggle {
      display: none;
      background: none; border: 1.5px solid var(--ink);
      width: 40px; height: 40px; font-size: 17px; cursor: pointer; color: var(--ink);
    }
    .nav-mobile { display: none; }

    /* ============ Hero: editorial masthead ============ */
    .hero { border-bottom: 2px solid var(--ink); }
    .hero-top {
      padding: 72px 0 56px;
    }
    .hero-kicker {
      display: flex; align-items: center; gap: 14px;
      font-family: var(--font-mono); font-size: 13px;
      color: var(--ink-soft);
      margin-bottom: 26px;
    }
    .hero-kicker::before { content: ""; width: 44px; height: 2px; background: var(--orange); }
    .hero h1 {
      font-family: var(--font-display);
      font-weight: 900;
      font-size: clamp(42px, 7.6vw, 96px);
      line-height: 1.16;
      letter-spacing: 2px;
    }
    /* Marker-highlight effect: orange underlay behind the key word */
    .hero h1 .hollow {
      background: linear-gradient(transparent 58%, rgba(255, 77, 0, 0.28) 58%);
      padding: 0 4px;
    }
    .hero h1 .accent { color: var(--orange); }
    .hero-sub {
      margin-top: 30px;
      display: grid;
      grid-template-columns: 1.2fr 1fr;
      gap: 40px;
      align-items: end;
    }
    .hero-sub p { font-size: 16.5px; color: var(--ink-soft); max-width: 560px; }
    .hero-cta { display: flex; gap: 0; justify-content: flex-end; flex-wrap: wrap; }
    .btn {
      display: inline-flex; align-items: center; gap: 10px;
      font-size: 15.5px; font-weight: 700;
      padding: 16px 30px;
      border: 2px solid var(--ink);
      cursor: pointer;
      transition: transform .15s, box-shadow .15s, background .15s, color .15s;
      box-shadow: 0 0 0 var(--ink);
    }
    .btn:hover { transform: translate(-3px, -3px); box-shadow: 5px 5px 0 var(--ink); }
    .btn:active { transform: translate(0, 0); box-shadow: 0 0 0 var(--ink); }
    .btn-primary { background: var(--orange); color: var(--paper); border-right-width: 1px; }
    .btn-ghost { background: var(--paper); color: var(--ink); border-left-width: 1px; }

    /* Departure-board style routing table */
    .board-wrap {
      border-top: 2px solid var(--ink);
      background: var(--ink);
      color: #e8e2d4;
    }
    .board-head {
      display: flex; justify-content: space-between; align-items: center;
      padding: 14px 0 12px;
      font-family: var(--font-mono); font-size: 12px; letter-spacing: 2px;
      color: rgba(232, 226, 212, 0.55);
      border-bottom: 1px solid rgba(232, 226, 212, 0.18);
    }
    .board-head .live { display: flex; align-items: center; gap: 8px; color: #ffb38a; }
    .board-head .live i {
      width: 8px; height: 8px; border-radius: 50%; background: var(--orange);
      animation: blink-dot 1.2s infinite;
    }
    @keyframes blink-dot { 50% { opacity: 0.25; } }
    .board {
      font-family: var(--font-mono);
      font-size: 14px;
    }
    .board-row {
      display: grid;
      grid-template-columns: 90px 1fr 190px 110px;
      gap: 18px;
      padding: 13px 0;
      border-bottom: 1px solid rgba(232, 226, 212, 0.12);
      align-items: center;
    }
    .board-row:last-child { border-bottom: none; }
    .board-row .t { color: rgba(232, 226, 212, 0.45); font-size: 12.5px; }
    .board-row .host { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
    .board-row .rule { color: rgba(232, 226, 212, 0.5); font-size: 12.5px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
    .board-row .verdict { text-align: right; font-weight: 700; letter-spacing: 1px; }
    .verdict.proxy { color: #ff9d66; }
    .verdict.direct { color: #7fd8a8; }
    .verdict.reject { color: #ff6b6b; text-decoration: line-through; }
    .board-row.enter { animation: row-in .4s ease; }
    @keyframes row-in { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: none; } }

    /* ============ Section scaffolding ============ */
    section { border-bottom: 2px solid var(--ink); }
    .sec-label {
      display: flex; justify-content: space-between; align-items: baseline;
      padding: 20px 0;
      border-bottom: 1px solid var(--line-soft);
      font-family: var(--font-mono); font-size: 12.5px; letter-spacing: 2px;
      color: var(--ink-soft);
      text-transform: uppercase;
    }
    .sec-title {
      font-family: var(--font-display);
      font-weight: 900;
      font-size: clamp(30px, 4.6vw, 54px);
      line-height: 1.25;
      padding: 44px 0 10px;
    }
    .sec-title em { font-style: normal; color: var(--orange); }
    .sec-desc { color: var(--ink-soft); max-width: 620px; padding-bottom: 44px; }

    /* ============ Features: numbered index rows ============ */
    .feat-list { border-top: 2px solid var(--ink); }
    .feat-row {
      display: grid;
      grid-template-columns: 110px 1fr 1.1fr 56px;
      gap: 28px;
      align-items: center;
      padding: 30px 0;
      border-bottom: 1px solid var(--line-soft);
      cursor: default;
      position: relative;
      transition: padding-left .25s ease;
    }
    .feat-row:last-child { border-bottom: none; }
    .feat-row::before {
      content: "";
      position: absolute;
      left: 50%; right: 50%; top: 0; bottom: 0;
      background: var(--paper-2);
      z-index: -1;
      transition: left .3s ease, right .3s ease;
    }
    .feat-row:hover::before { left: -100vw; right: -100vw; }
    .feat-row:hover { padding-left: 14px; }
    .feat-num {
      font-family: var(--font-mono);
      font-size: 15px;
      color: var(--ink-soft);
    }
    .feat-num b {
      display: block;
      font-size: 30px; font-weight: 500;
      color: var(--ink);
    }
    .feat-row:hover .feat-num b { color: var(--orange); }
    .feat-name h3 {
      font-family: var(--font-display);
      font-size: 24px; font-weight: 900;
      line-height: 1.35;
    }
    .feat-name .tags { margin-top: 8px; display: flex; flex-wrap: wrap; gap: 6px; }
    .feat-name .tags i {
      font-style: normal;
      font-family: var(--font-mono); font-size: 11.5px;
      border: 1px solid var(--line-soft);
      padding: 2px 8px;
      color: var(--ink-soft);
    }
    .feat-desc { font-size: 14.5px; color: var(--ink-soft); }
    .feat-arrow {
      font-size: 24px;
      color: var(--line-soft);
      text-align: center;
      transition: transform .25s ease, color .25s;
    }
    .feat-row:hover .feat-arrow { transform: translateX(6px); color: var(--orange); }

    /* ============ Platforms: stamp wall ============ */
    .plat-grid {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      border: 2px solid var(--ink);
      border-bottom: none;
      margin-bottom: 72px;
    }
    .plat {
      position: relative;
      display: block;
      padding: 38px 24px 30px;
      border-right: 1px solid var(--line-soft);
      border-bottom: 2px solid var(--ink);
      background: var(--paper);
      transition: background .2s, color .2s;
      overflow: hidden;
    }
    .plat:last-child { border-right: none; }
    .plat:hover { background: var(--ink); color: var(--paper); }
    .plat svg { width: 38px; height: 38px; fill: currentColor; margin-bottom: 18px; transition: transform .25s ease; }
    .plat:hover svg { transform: translateY(-4px) rotate(-4deg); }
    .plat b { display: block; font-family: var(--font-display); font-size: 19px; font-weight: 900; }
    .plat span { display: block; font-size: 12.5px; color: var(--ink-soft); margin-top: 4px; }
    .plat:hover span { color: rgba(247, 243, 234, 0.6); }
    .plat .get {
      display: inline-block; margin-top: 20px;
      font-family: var(--font-mono); font-size: 12.5px; font-weight: 700;
      color: var(--orange);
      border-bottom: 1.5px solid var(--orange);
      padding-bottom: 2px;
    }
    .plat .stamp {
      position: absolute; top: 14px; right: 12px;
      font-family: var(--font-mono); font-size: 10px; letter-spacing: 1px;
      border: 1.5px solid currentColor;
      padding: 2px 7px;
      transform: rotate(6deg);
      opacity: 0.35;
    }

    /* ============ Trust: giant editorial numbers ============ */
    .stats-row {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      border-top: 2px solid var(--ink);
    }
    .stat {
      padding: 40px 26px 36px;
      border-right: 1px solid var(--line-soft);
    }
    .stat:last-child { border-right: none; }
    .stat .num {
      font-family: var(--font-display);
      font-size: clamp(40px, 5vw, 62px);
      font-weight: 900;
      line-height: 1.1;
      letter-spacing: -1px;
    }
    .stat .num small { font-size: 0.5em; color: var(--orange); font-family: var(--font-mono); font-weight: 500; margin-left: 2px; }
    .stat .lbl { margin-top: 10px; font-size: 13.5px; color: var(--ink-soft); }
    .stat .lbl::before { content: ""; display: block; width: 28px; height: 2px; background: var(--orange); margin-bottom: 8px; }

    .gh-band {
      margin: 0 0 72px;
      border: 2px solid var(--ink);
      background: var(--ink);
      color: var(--paper);
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 26px;
      flex-wrap: wrap;
      padding: 30px 34px;
      box-shadow: 8px 8px 0 var(--orange);
    }
    .gh-band .txt b { font-family: var(--font-display); font-size: 20px; font-weight: 900; display: block; margin-bottom: 6px; }
    .gh-band .txt span { color: rgba(247, 243, 234, 0.65); font-size: 14px; }
    .gh-band code {
      font-family: var(--font-mono); font-size: 13px;
      color: #ffb38a;
      background: rgba(255, 77, 0, 0.15);
      padding: 2px 8px;
    }
    .gh-band .btn { background: var(--paper); color: var(--ink); border-color: var(--paper); }
    .gh-band .btn:hover { box-shadow: 5px 5px 0 var(--orange); }

    /* ============ CTA: oversized hollow type ============ */
    .cta-sec { text-align: left; overflow: hidden; }
    .cta-giant {
      font-family: var(--font-display);
      font-weight: 900;
      font-size: clamp(46px, 9.5vw, 130px);
      line-height: 1.1;
      white-space: nowrap;
      letter-spacing: 2px;
      color: var(--ink);
      padding: 48px 0 8px;
      user-select: none;
    }
    .cta-giant .fill { color: var(--orange); }
    .cta-body {
      display: flex; justify-content: space-between; align-items: center;
      gap: 30px; flex-wrap: wrap;
      padding: 24px 0 64px;
    }
    .cta-body p { color: var(--ink-soft); max-width: 520px; }

    /* ============ Footer ============ */
    footer { background: var(--paper-2); }
    .foot-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.3fr;
      gap: 44px;
      padding: 56px 0 44px;
      border-bottom: 1px solid var(--line-soft);
    }
    .foot-grid h4 {
      font-family: var(--font-mono); font-size: 12px; letter-spacing: 2px;
      color: var(--ink-soft); margin-bottom: 18px; text-transform: uppercase;
    }
    .foot-grid ul li { margin-bottom: 10px; }
    .foot-grid a { font-size: 14.5px; border-bottom: 1px solid transparent; transition: border-color .15s, color .15s; }
    .foot-grid a:hover { color: var(--orange); border-bottom-color: var(--orange); }
    .foot-brand .logo { border-right: none; padding-right: 0; }
    .foot-brand p { color: var(--ink-soft); font-size: 14px; margin-top: 16px; max-width: 300px; }
    .foot-lang { display: flex; flex-wrap: wrap; gap: 8px; }
    .foot-lang a {
      font-size: 12.5px; font-family: var(--font-mono);
      border: 1.5px solid var(--line-soft);
      padding: 5px 12px; cursor: pointer;
      transition: all .15s;
      display: inline-block; text-decoration: none; color: inherit;
    }
    .foot-lang a:hover { border-color: var(--ink); }
    .foot-lang a.current { background: var(--ink); color: var(--paper); border-color: var(--ink); }
    .foot-bottom {
      padding: 24px 0 30px;
      display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px;
      font-size: 13px; color: var(--ink-soft);
    }

    /* ============ Responsive ============ */
    @media (max-width: 980px) {
      .hero-sub { grid-template-columns: 1fr; gap: 22px; }
      .hero-cta { justify-content: flex-start; order: -1; }
      .hero-sub p { max-width: none; }
      .feat-row { grid-template-columns: 70px 1fr 40px; }
      .feat-desc { grid-column: 2; grid-row: 2; }
      .feat-arrow { grid-row: 1; grid-column: 3; }
      .plat-grid { grid-template-columns: repeat(3, 1fr); }
      .plat:nth-child(3n) { border-right: none; }
      .stats-row { grid-template-columns: 1fr 1fr; }
      .stat:nth-child(2n) { border-right: none; }
      .stat { border-bottom: 1px solid var(--line-soft); }
      .foot-grid { grid-template-columns: 1fr 1fr; }
      .board-row { grid-template-columns: 70px 1fr 100px; }
      .board-row .rule { display: none; }
    }
    @media (max-width: 720px) {
      .nav-links { display: none; }
      .nav-toggle { display: block; }
      .nav-mobile {
        display: none; flex-direction: column;
        border-top: 2px solid var(--ink);
      }
      .nav-mobile.open { display: flex; }
      .nav-mobile a {
        padding: 14px 0; font-size: 16px;
        border-bottom: 1px solid var(--line-soft);
      }
      .nav-mobile a.nav-mobile-sub { padding: 11px 0 11px 18px; font-size: 14px; color: var(--ink-soft); }
      .hero-top { padding: 30px 0 32px; }
      .hero-kicker { margin-bottom: 16px; font-size: 11.5px; gap: 10px; }
      .hero-kicker::before { width: 30px; }
      .hero h1 { letter-spacing: 0.5px; }
      .hero-sub { margin-top: 22px; }
      .hero-sub p { font-size: 15px; }
      .plat-grid { grid-template-columns: 1fr 1fr; }
      .plat:nth-child(3n) { border-right: 1px solid var(--line-soft); }
      .plat:nth-child(2n) { border-right: none; }
      .btn { flex: 1; justify-content: center; }
      .cta-giant { white-space: normal; }
    }
    @media (max-width: 420px) {
      .btn { padding: 14px 16px; font-size: 14px; gap: 7px; }
      .hero h1 { font-size: 36px; }
    }

    @media (prefers-reduced-motion: reduce) {
      .ticker-track, .board-head .live i { animation: none; }
      .board-row.enter { animation: none; }
      .reveal { opacity: 1; transform: none; transition: none; }
      html { scroll-behavior: auto; }
    }