/*
     * CodeLink landing
     */

    :root {
      /* 与 Mac 端 MacCBTheme（mac-dark）同一套语义色 */
      --surface-100: #1e252c;
      --surface-200: #1a2128;
      --surface-300: #232b33;
      --surface-400: #2a333d;
      --surface-500: #323c47;
      --border-subtle: rgba(186, 224, 214, 0.12);
      --border-strong: rgba(186, 224, 214, 0.22);

      --canvas-top: #161c22;
      --canvas-bottom: #0d2629;
      --panel: rgba(26, 32, 40, 0.94);
      --panel-border: rgba(186, 224, 214, 0.14);
      --ink: #eaf1ef;
      --title-ink: #f6faf9;
      --muted: #9dadb0;
      --accent: #36bca8;
      --accent-strong: #2ba093;
      --amber: #f5ae48;
      --field: rgba(36, 46, 54, 0.96);
      --field-border: rgba(79, 170, 158, 0.28);
      --inset: rgba(250, 252, 251, 0.06);
      --shadow: rgba(0, 0, 0, 0.28);
      --elev-card: 0 16px 48px rgba(0, 0, 0, 0.35), 0 0 0 1px var(--panel-border);
      --elev-soft: 0 1px 0 rgba(255, 255, 255, 0.04) inset;

      --btn-primary-bg: var(--accent);
      --btn-primary-fg: #071214;
      --btn-primary-border: rgba(0, 0, 0, 0.18);
      --btn-primary-hover-bg: var(--accent-strong);
      --btn-primary-hover-fg: #030a0c;
      --btn-primary-inset: none;

      --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", "Hiragino Sans", "Yu Gothic UI", "Segoe UI", system-ui, sans-serif;
      --font-display: var(--font-sans);
      --font-serif: var(--font-sans);
      --font-mono: "SF Mono", ui-monospace, Menlo, Monaco, Consolas, monospace;

      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 12px;
      --space-xs: 8px;
      --space-sm: 16px;
      --space-md: 24px;
      --space-lg: 48px;
      --space-xl: 72px;
      --content-wide: 1200px;
      --prose: 58ch;
    }

    body[data-theme="mac-light"] {
      --surface-100: #fdfcfa;
      --surface-200: #f3f2ec;
      --surface-300: #e8e6df;
      --surface-400: #dedbd4;
      --canvas-top: #f2f1e6;
      --canvas-bottom: #d9ebe7;
      --panel: rgba(255, 255, 255, 0.88);
      --panel-border: rgba(26, 72, 82, 0.12);
      --ink: #1a2e33;
      --title-ink: #122428;
      --muted: #4d5c60;
      --accent: #0d7a6e;
      --accent-strong: #0a5f55;
      --amber: #b8731a;
      --field: rgba(255, 253, 248, 0.95);
      --field-border: rgba(13, 122, 110, 0.18);
      --inset: rgba(26, 46, 51, 0.06);
      --shadow: rgba(0, 0, 0, 0.08);
      --elev-card: 0 12px 32px rgba(0, 0, 0, 0.08), 0 0 0 1px var(--panel-border);
      --btn-primary-bg: var(--accent);
      --btn-primary-fg: #ffffff;
      --btn-primary-border: rgba(0, 0, 0, 0.08);
      --btn-primary-hover-bg: var(--accent-strong);
      --btn-primary-hover-fg: #ffffff;
    }

    body[data-theme="mac-dark"],
    body[data-theme="graphite"] {
      --btn-primary-bg: var(--accent);
      --btn-primary-fg: #071214;
      --btn-primary-border: rgba(0, 0, 0, 0.18);
      --btn-primary-hover-bg: var(--accent-strong);
      --btn-primary-hover-fg: #030a0c;
      --btn-primary-inset: none;
      --canvas-top: #161c22;
      --canvas-bottom: #0d2629;
      --panel: rgba(26, 32, 40, 0.94);
      --panel-border: rgba(186, 224, 214, 0.14);
      --ink: #eaf1ef;
      --title-ink: #f6faf9;
      --muted: #9dadb0;
      --accent: #36bca8;
      --accent-strong: #2ba093;
      --amber: #f5ae48;
      --field: rgba(36, 46, 54, 0.96);
      --field-border: rgba(79, 170, 158, 0.28);
      --inset: rgba(250, 252, 251, 0.06);
      --shadow: rgba(0, 0, 0, 0.28);
    }

    body[data-theme="console-blue"] {
      --btn-primary-bg: #0a66ff;
      --btn-primary-fg: #f8fafc;
      --btn-primary-border: rgba(0, 0, 0, 0.22);
      --btn-primary-hover-bg: #3b82f6;
      --btn-primary-hover-fg: #ffffff;
      --btn-primary-inset: none;
      --canvas-top: #050a12;
      --canvas-bottom: #041018;
      --panel: rgba(8, 26, 54, 0.96);
      --panel-border: rgba(82, 128, 209, 0.22);
      --ink: #e8eef8;
      --title-ink: #f8fafc;
      --muted: #8fa3bf;
      --accent: #5c9dff;
      --accent-strong: #93c5fd;
      --amber: #f3c84b;
      --field: rgba(12, 40, 78, 0.98);
      --field-border: rgba(46, 92, 168, 0.42);
      --inset: rgba(255, 255, 255, 0.04);
      --shadow: rgba(0, 0, 0, 0.34);
    }

    @media (prefers-color-scheme: light) {
      body[data-theme="system"] {
        --surface-100: #fdfcfa;
        --surface-200: #f3f2ec;
        --surface-300: #e8e6df;
        --surface-400: #dedbd4;
        --canvas-top: #f2f1e6;
        --canvas-bottom: #d9ebe7;
        --panel: rgba(255, 255, 255, 0.88);
        --panel-border: rgba(26, 72, 82, 0.12);
        --ink: #1a2e33;
        --title-ink: #122428;
        --muted: #4d5c60;
        --accent: #0d7a6e;
        --accent-strong: #0a5f55;
        --amber: #b8731a;
        --field: rgba(255, 253, 248, 0.95);
        --field-border: rgba(13, 122, 110, 0.18);
        --inset: rgba(26, 46, 51, 0.06);
        --shadow: rgba(0, 0, 0, 0.08);
        --btn-primary-bg: var(--accent);
        --btn-primary-fg: #ffffff;
        --btn-primary-border: rgba(0, 0, 0, 0.08);
        --btn-primary-hover-bg: var(--accent-strong);
        --btn-primary-hover-fg: #ffffff;
      }
    }

    @media (prefers-color-scheme: dark) {
      body[data-theme="system"] {
        --btn-primary-bg: var(--accent);
        --btn-primary-fg: #071214;
        --btn-primary-border: rgba(0, 0, 0, 0.18);
        --btn-primary-hover-bg: var(--accent-strong);
        --btn-primary-hover-fg: #030a0c;
        --btn-primary-inset: none;
        --canvas-top: #161c22;
        --canvas-bottom: #0d2629;
        --panel: rgba(26, 32, 40, 0.94);
        --panel-border: rgba(186, 224, 214, 0.14);
        --ink: #eaf1ef;
        --title-ink: #f6faf9;
        --muted: #9dadb0;
        --accent: #36bca8;
        --accent-strong: #2ba093;
        --amber: #f5ae48;
        --field: rgba(36, 46, 54, 0.96);
        --field-border: rgba(79, 170, 158, 0.28);
        --inset: rgba(250, 252, 251, 0.06);
        --shadow: rgba(0, 0, 0, 0.28);
      }
    }

    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }

    body {
      margin: 0;
      min-height: 100dvh;
      font-family: var(--font-sans);
      font-size: 15px;
      font-weight: 400;
      color: var(--ink);
      background: var(--canvas-top);
      line-height: 1.5;
      -webkit-font-smoothing: antialiased;
      text-rendering: optimizeLegibility;
    }

    .page-bg {
      position: fixed;
      inset: 0;
      z-index: -1;
      pointer-events: none;
      background: linear-gradient(180deg, var(--canvas-top) 0%, var(--canvas-bottom) 100%);
    }

    .grid-noise {
      position: fixed;
      inset: 0;
      z-index: -1;
      pointer-events: none;
      opacity: 0.035;
      background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
    }

    .wrap {
      width: 100%;
      max-width: var(--content-wide);
      margin: 0 auto;
      padding: 0 clamp(14px, 3vw, 24px);
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      border-bottom: 1px solid var(--panel-border);
      background: color-mix(in srgb, var(--panel) 92%, transparent);
      backdrop-filter: blur(12px) saturate(1.02);
      -webkit-backdrop-filter: blur(12px) saturate(1.02);
    }
    .site-header .inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: var(--space-sm);
      flex-wrap: wrap;
      padding: 10px 0;
      min-height: 56px;
    }

    .brand {
      display: flex;
      align-items: center;
      gap: 10px;
      font-family: var(--font-display);
      font-weight: 600;
      font-size: 0.95rem;
      letter-spacing: -0.03em;
      color: var(--title-ink);
      min-width: 0;
    }
    .brand-link {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      min-width: 0;
      text-decoration: none;
      color: inherit;
      border-radius: var(--radius-sm);
      padding: 2px 6px 2px 2px;
      margin: -2px -6px -2px -2px;
      transition: background 0.15s ease;
    }
    .brand-link:hover {
      background: var(--inset);
    }
    .brand-link span {
      font-weight: 650;
      letter-spacing: -0.04em;
      font-size: 1.02rem;
      white-space: nowrap;
    }
    .brand img {
      width: 34px;
      height: 34px;
      border-radius: 8px;
      object-fit: cover;
      border: 1px solid var(--panel-border);
      box-shadow: var(--elev-soft);
      flex-shrink: 0;
    }
    .ver {
      font-family: var(--font-mono);
      font-size: 0.62rem;
      font-weight: 600;
      padding: 3px 8px;
      border-radius: 999px;
      background: color-mix(in srgb, var(--surface-300) 88%, transparent);
      color: var(--muted);
      border: 1px solid var(--panel-border);
      flex-shrink: 0;
      letter-spacing: 0.02em;
    }

    .nav {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 2px;
    }
    .nav a {
      font-family: var(--font-display);
      font-size: 0.8125rem;
      font-weight: 500;
      color: var(--muted);
      text-decoration: none;
      padding: 8px 10px;
      border-radius: var(--radius-sm);
      transition: color 0.15s ease, background 0.15s ease;
    }
    .nav a:hover {
      color: var(--title-ink);
      background: var(--inset);
    }
    .nav a:focus-visible {
      outline: none;
      box-shadow: rgba(0, 0, 0, 0.1) 0 4px 12px;
    }

    .lang {
      display: inline-flex;
      border-radius: 999px;
      padding: 3px;
      background: var(--surface-300);
      border: 1px solid var(--panel-border);
      margin-left: 4px;
    }
    .lang button {
      font-family: var(--font-display);
      font-size: 0.72rem;
      font-weight: 600;
      border: none;
      cursor: pointer;
      padding: 7px 12px;
      border-radius: 999px;
      background: transparent;
      color: var(--muted);
      transition: background 0.15s ease, color 0.15s ease;
    }
    .lang button[aria-pressed="true"] {
      background: var(--field);
      color: var(--title-ink);
      box-shadow: 0 0 0 1px var(--panel-border);
    }
    .lang button:hover {
      color: var(--title-ink);
    }

    a:focus-visible,
    button:focus-visible,
    summary:focus-visible {
      outline: none;
      box-shadow: rgba(0, 0, 0, 0.1) 0 4px 12px;
    }

    .section {
      padding: var(--space-lg) 0;
    }
    .section + .section {
      border-top: 1px solid var(--panel-border);
    }
    .section-rule {
      border-top: 1px solid var(--panel-border);
    }

    .section-head {
      max-width: min(var(--prose), 100%);
      margin-bottom: var(--space-md);
    }
    .section-lede {
      margin-bottom: 0;
    }

    .anim-in {
      opacity: 1;
    }

    @media (prefers-reduced-motion: no-preference) {
      @keyframes rise {
        from { opacity: 0; }
        to { opacity: 1; }
      }
      .anim-in {
        animation: rise 0.22s ease-out backwards;
      }
      main.wrap > .anim-in:nth-child(2) { animation-delay: 24ms; }
      main.wrap > .anim-in:nth-child(3) { animation-delay: 48ms; }
      main.wrap > .anim-in:nth-child(4) { animation-delay: 72ms; }
      main.wrap > .anim-in:nth-child(5) { animation-delay: 96ms; }
    }

    @media (prefers-reduced-motion: reduce) {
      .anim-in { animation: none; }
    }

    .eyebrow {
      font-family: var(--font-display);
      font-size: 11px;
      font-weight: 600;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      color: var(--muted);
      margin: 0 0 8px;
    }

    h1 {
      font-family: var(--font-display);
      font-size: clamp(1.85rem, 4.2vw, 2.75rem);
      font-weight: 600;
      letter-spacing: -0.045em;
      line-height: 1.1;
      color: var(--title-ink);
      margin: 0 0 var(--space-sm);
      text-wrap: balance;
      max-width: min(26ch, 100%);
    }

    h2 {
      font-family: var(--font-display);
      font-size: clamp(1.25rem, 2.2vw, 1.5rem);
      font-weight: 600;
      letter-spacing: -0.035em;
      line-height: 1.2;
      color: var(--title-ink);
      margin: 0 0 var(--space-xs);
    }

    h3 {
      font-family: var(--font-display);
      font-size: 1rem;
      font-weight: 600;
      letter-spacing: -0.02em;
      margin: 0 0 var(--space-xs);
      color: var(--title-ink);
    }

    .lede {
      font-family: var(--font-sans);
      font-size: 0.97rem;
      color: var(--muted);
      max-width: var(--prose);
      margin: 0 0 var(--space-md);
      line-height: 1.55;
    }

    .lede.lede-tight {
      margin-bottom: var(--space-md);
    }

    .mt-sm { margin-top: var(--space-sm); }
    .mt-md { margin-top: var(--space-md); }

    .hint-line {
      font-family: var(--font-sans);
      font-size: 0.875rem;
      color: var(--muted);
      max-width: var(--prose);
      margin: 0 0 var(--space-md);
      padding: 10px 12px;
      background: var(--field);
      border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
      line-height: 1.5;
      border: 1px solid var(--field-border);
      border-left: 3px solid var(--accent);
    }

    .section.section-tight {
      padding-top: clamp(32px, 6vw, 56px);
      padding-bottom: var(--space-lg);
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: var(--space-md);
      align-items: start;
    }

    @media (min-width: 900px) {
      .hero-grid {
        grid-template-columns: minmax(0, 1fr) minmax(0, 1.08fr);
        gap: var(--space-lg);
        align-items: center;
      }
    }

    .hero-shot { min-width: 0; }

    .hero-shot a {
      display: block;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--panel-border);
      box-shadow: var(--elev-card);
      transition: box-shadow 0.2s ease, transform 0.2s ease;
    }
    .hero-shot a:hover {
      box-shadow: var(--elev-card);
    }

    .hero-shot img,
    #desktop-shot-img {
      display: block;
      width: 100%;
      max-width: 100%;
      height: auto;
    }

    .tldr {
      margin-bottom: var(--space-md);
    }

    .manifest-label {
      font-family: var(--font-display);
      font-size: 0.6875rem;
      font-weight: 600;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      color: var(--muted);
      margin: 0 0 10px;
    }

    .manifest-list {
      list-style: none;
      margin: 0;
      padding: 0;
      display: grid;
      gap: 8px;
      max-width: min(40rem, 100%);
    }
    .manifest-list li {
      position: relative;
      padding: 12px 14px 12px 36px;
      font-family: var(--font-sans);
      font-size: 0.9375rem;
      font-weight: 400;
      line-height: 1.45;
      color: var(--ink);
      background: var(--field);
      border: 1px solid var(--field-border);
      border-radius: var(--radius-sm);
      box-shadow: var(--elev-soft);
    }
    .manifest-list li::before {
      content: "";
      position: absolute;
      left: 14px;
      top: 50%;
      transform: translateY(-50%);
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--accent);
      box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent);
    }

    .hero-band {
      padding-top: var(--space-md);
      padding-bottom: var(--space-xl);
    }

    .product-hero {
      display: grid;
      grid-template-columns: 1fr;
      gap: var(--space-lg);
      align-items: start;
    }
    @media (min-width: 900px) {
      .product-hero { gap: 2rem; }
    }

    .product-head {
      padding: clamp(1rem, 2.2vw, 1.5rem);
      background: var(--panel);
      border: 1px solid var(--panel-border);
      border-radius: var(--radius-md);
      box-shadow: var(--elev-soft);
    }

    .product-meta {
      display: grid;
      grid-template-columns: 1fr;
      gap: var(--space-md);
      align-items: start;
      margin-bottom: var(--space-sm);
    }
    @media (min-width: 720px) {
      .product-meta {
        grid-template-columns: auto minmax(0, 1fr);
      }
    }

    .product-icon {
      width: 88px;
      height: 88px;
      border-radius: 16px;
      box-shadow: var(--elev-soft);
    }

    .product-copy .hero-lede {
      max-width: min(48ch, 100%);
    }

    .product-subtitle {
      margin: 0 0 12px;
      font-size: 1rem;
      font-family: var(--font-display);
      color: var(--accent);
      font-weight: 600;
      letter-spacing: -0.02em;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      align-items: flex-start;
      gap: 10px;
      margin-bottom: var(--space-sm);
    }

    .store-block {
      display: inline-flex;
      flex-direction: column;
      align-items: flex-start;
      gap: 6px;
    }
    .store-hint {
      font-family: var(--font-display);
      font-size: 0.72rem;
      color: var(--muted);
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-family: var(--font-display);
      font-weight: 600;
      font-size: 0.875rem;
      line-height: 1.2;
      padding: 10px 14px;
      border-radius: var(--radius-sm);
      cursor: pointer;
      text-decoration: none;
      transition: color 0.15s ease, background 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease, transform 0.12s ease;
    }
    .btn:active:not([aria-disabled="true"]) { transform: scale(0.99); }

    .btn-primary {
      color: var(--btn-primary-fg);
      background: var(--btn-primary-bg);
      border: 1px solid var(--btn-primary-border);
      box-shadow: var(--btn-primary-inset);
    }
    .btn-primary:hover {
      color: var(--btn-primary-hover-fg);
      background: var(--btn-primary-hover-bg, var(--btn-primary-bg));
    }
    .btn-primary:focus-visible {
      box-shadow: rgba(0, 0, 0, 0.1) 0 4px 12px;
    }
    .btn-primary[aria-disabled="true"] {
      opacity: 0.45;
      cursor: not-allowed;
    }

    .btn-secondary {
      color: var(--muted);
      background: transparent;
      border: 1px solid var(--panel-border);
    }
    .btn-secondary:hover {
      color: var(--title-ink);
      background: var(--inset);
      border-color: var(--field-border);
    }

    a.underline-link {
      color: var(--accent-strong);
      text-decoration: underline;
      text-underline-offset: 2px;
    }
    a.underline-link:hover {
      color: var(--accent);
    }

    .showcase-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: var(--space-md);
      align-items: start;
    }
    @media (min-width: 900px) {
      .showcase-grid {
        grid-template-columns: minmax(0, 1.42fr) minmax(260px, 0.58fr);
      }
    }

    .showcase-card {
      margin: 0;
      position: relative;
      background: var(--panel);
      border: 1px solid var(--panel-border);
      border-radius: var(--radius-md);
      padding: 16px 12px 12px;
      box-shadow: var(--elev-soft);
    }
    .showcase-card::before {
      content: "";
      position: absolute;
      top: 13px;
      left: 14px;
      width: 44px;
      height: 8px;
      border-radius: 999px;
      background:
        radial-gradient(circle at 4px 4px, #ff8a7a 0 4px, transparent 4.2px),
        radial-gradient(circle at 22px 4px, #f4c25d 0 4px, transparent 4.2px),
        radial-gradient(circle at 40px 4px, #61d095 0 4px, transparent 4.2px);
    }
    .showcase-label {
      margin: 0 0 8px 56px;
      font-family: var(--font-display);
      font-size: 0.72rem;
      font-weight: 600;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      color: var(--muted);
    }
    .showcase-card a {
      display: block;
      text-decoration: none;
      color: inherit;
      transition: transform 0.18s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .showcase-card a:active {
      transform: scale(0.988);
    }
    .showcase-card img {
      display: block;
      width: 100%;
      height: auto;
      margin: 8px auto 0;
      border-radius: var(--radius-sm);
      border: 1px solid var(--panel-border);
    }
    .showcase-card--mobile img {
      max-width: 360px;
      margin-left: auto;
      margin-right: auto;
    }

    .card {
      background: var(--panel);
      border: 1px solid var(--panel-border);
      border-radius: var(--radius-md);
      padding: var(--space-md);
      box-shadow: var(--elev-soft);
      transition: box-shadow 0.2s ease;
    }
    .card:hover {
      border-color: var(--field-border);
    }
    .card--ghost {
      background: color-mix(in srgb, var(--panel) 92%, transparent);
      box-shadow: none;
    }
    .card .tag {
      font-family: var(--font-display);
      font-size: 0.625rem;
      font-weight: 600;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      color: var(--accent);
      display: block;
      margin-bottom: 8px;
    }
    .card p {
      margin: 0;
      font-family: var(--font-sans);
      font-size: 0.9375rem;
      color: var(--muted);
      line-height: 1.55;
    }

    .feat-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: var(--space-sm);
    }
    @media (min-width: 720px) {
      .feat-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: var(--space-md);
      }
    }

    .feat-zigzag {
      display: grid;
      grid-template-columns: 1fr;
      gap: var(--space-md);
    }
    @media (min-width: 920px) {
      .feat-zigzag {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        align-items: stretch;
      }
    }

    .feat-strip {
      display: grid;
      grid-template-columns: 1fr;
      gap: var(--space-sm);
      align-items: stretch;
    }
    @media (min-width: 720px) and (max-width: 919px) {
      .feat-strip {
        grid-template-columns: auto minmax(0, 1fr);
        gap: var(--space-md);
        align-items: start;
      }
      .feat-strip--wide .feat-strip-body {
        grid-column: 2;
      }
      .feat-strip--split:nth-child(even) .feat-index {
        order: 2;
        justify-self: end;
      }
      .feat-strip--split:nth-child(even) .feat-strip-body {
        grid-column: 1;
        order: 1;
      }
      .feat-strip--push {
        margin-top: 0.35rem;
        margin-left: clamp(0px, 6vw, 3.5rem);
      }
    }
    @media (min-width: 920px) {
      .feat-strip,
      .feat-strip--split,
      .feat-strip--wide {
        grid-template-columns: 1fr;
        gap: 10px;
      }
      .feat-strip--push {
        margin: 0;
      }
      .feat-strip--split:nth-child(even) .feat-index,
      .feat-strip--split:nth-child(even) .feat-strip-body {
        order: initial;
        grid-column: auto;
        justify-self: start;
      }
    }

    .feat-index {
      font-family: var(--font-mono);
      font-size: clamp(2rem, 4vw, 2.75rem);
      font-weight: 600;
      line-height: 1;
      letter-spacing: -0.04em;
      color: color-mix(in srgb, var(--muted) 55%, var(--canvas-top));
      padding: 4px 0 0;
      user-select: none;
    }
    @media (min-width: 720px) {
      .feat-index {
        padding-top: 10px;
        min-width: 3.25rem;
      }
    }
    @media (min-width: 920px) {
      .feat-index {
        min-width: auto;
        padding-top: 0;
        font-size: 0.82rem;
        letter-spacing: 0.08em;
        color: var(--accent);
      }
    }

    .feat-strip-body h3 {
      margin-top: 2px;
    }
    @media (min-width: 920px) {
      .feat-strip-body {
        height: 100%;
      }
      .feat-strip-body.card {
        padding-top: 18px;
      }
    }

    .how-grid {
      display: grid;
      gap: var(--space-sm);
      grid-template-columns: 1fr;
    }
    @media (min-width: 720px) {
      .how-grid { grid-template-columns: 1fr 1fr; }
    }

    .step-list {
      counter-reset: step;
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .step-list.compact li {
      padding-left: 34px;
      margin-bottom: var(--space-sm);
    }
    .step-list li {
      position: relative;
      padding-left: 36px;
      margin-bottom: var(--space-md);
    }
    .step-list li::before {
      content: counter(step);
      counter-increment: step;
      position: absolute;
      left: 0;
      top: 0;
      width: 26px;
      height: 26px;
      border-radius: 8px;
      background: var(--field);
      color: var(--title-ink);
      font-size: 0.72rem;
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      font-family: var(--font-mono);
      border: 1px solid var(--panel-border);
    }
    .step-list .st-title {
      font-family: var(--font-display);
      font-weight: 600;
      color: var(--title-ink);
      font-size: 0.9rem;
      margin-bottom: 4px;
    }
    .step-list .st-detail {
      font-family: var(--font-sans);
      font-size: 0.9rem;
      color: var(--muted);
      line-height: 1.5;
    }

    .prose-narrow { max-width: var(--prose); }

    .flow-box {
      font-family: var(--font-mono);
      font-size: 0.75rem;
      line-height: 1.5;
      color: var(--muted);
      background: var(--field);
      border: 1px solid var(--field-border);
      border-radius: var(--radius-sm);
      padding: var(--space-sm);
      overflow-x: auto;
      white-space: pre;
      margin: var(--space-sm) 0;
    }

    .flow-card-wrap {
      display: grid;
      grid-template-columns: 1fr;
      gap: var(--space-sm);
      margin: var(--space-sm) 0;
    }
    @media (min-width: 720px) {
      .flow-card-wrap {
        grid-template-columns: 1fr auto 1fr;
        align-items: center;
      }
    }

    .flow-card {
      background: var(--field);
      border: 1px solid var(--field-border);
      border-radius: var(--radius-sm);
      padding: var(--space-sm);
      box-shadow: var(--elev-soft);
    }

    .flow-card-title {
      font-family: var(--font-display);
      font-weight: 700;
      font-size: 0.8125rem;
      letter-spacing: 0.06em;
      text-transform: uppercase;
      color: var(--title-ink);
      margin: 0 0 8px;
    }

    .flow-card-body {
      font-family: var(--font-mono);
      font-size: 0.78rem;
      color: var(--muted);
      line-height: 1.55;
      white-space: pre-wrap;
    }

    .flow-card-arrow {
      font-size: 1.5rem;
      line-height: 1;
      color: var(--accent);
      align-self: center;
      justify-self: center;
      padding: 0 6px;
      user-select: none;
    }

    .pt-collapse {
      cursor: pointer;
      overflow: hidden;
      transition: height 260ms cubic-bezier(0.16, 1, 0.3, 1);
    }

    .pt-collapse[aria-disabled="true"] {
      cursor: default;
    }

    @media (prefers-reduced-motion: reduce) {
      .pt-collapse { transition: none; }
    }

    .compare-table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
    table.compare {
      width: 100%;
      border-collapse: collapse;
      font-size: 0.875rem;
    }
    table.compare th,
    table.compare td {
      padding: 12px 14px;
      text-align: left;
      vertical-align: top;
      border-bottom: 1px solid var(--panel-border);
    }
    table.compare th {
      font-family: var(--font-display);
      font-weight: 600;
      color: var(--title-ink);
      width: 26%;
      font-size: 0.8125rem;
    }
    table.compare td {
      font-family: var(--font-serif);
      color: var(--muted);
    }
    table.compare tr:last-child th,
    table.compare tr:last-child td { border-bottom: none; }

    table.cmd {
      width: 100%;
      border-collapse: collapse;
      font-size: 0.8125rem;
      margin-top: var(--space-sm);
    }
    table.cmd th,
    table.cmd td {
      padding: 10px 12px;
      border-bottom: 1px solid var(--panel-border);
      vertical-align: top;
    }
    table.cmd th {
      font-family: var(--font-mono);
      font-weight: 600;
      color: var(--accent);
      width: 22%;
      white-space: nowrap;
    }
    table.cmd td {
      font-family: var(--font-serif);
      color: var(--muted);
    }
    table.cmd tr:last-child td { border-bottom: none; }

    .checklist {
      margin: var(--space-sm) 0 0;
      padding-left: 1.15rem;
      color: var(--muted);
      font-family: var(--font-serif);
      font-size: 0.9rem;
    }
    .checklist li { margin-bottom: 8px; }

    code, kbd {
      font-family: var(--font-mono);
      font-size: 0.86em;
    }
    kbd {
      padding: 2px 6px;
      border-radius: 4px;
      background: var(--field);
      border: 1px solid var(--field-border);
    }

    details.soft-fold {
      margin-top: var(--space-sm);
      border-radius: var(--radius-md);
      border: 1px solid var(--panel-border);
      background: var(--field);
      padding: 0 var(--space-sm);
      box-shadow: var(--elev-soft);
    }
    details.soft-fold summary {
      cursor: pointer;
      font-family: var(--font-display);
      font-weight: 600;
      padding: 14px 0;
      color: var(--title-ink);
      list-style: none;
      font-size: 0.9375rem;
    }
    details.soft-fold summary:hover {
      color: var(--accent);
    }
    details.soft-fold summary::-webkit-details-marker { display: none; }
    details.soft-fold .inner {
      padding-bottom: var(--space-sm);
      border-top: 1px solid var(--panel-border);
      padding-top: var(--space-sm);
    }

    details.privacy-details {
      margin-top: var(--space-sm);
      border-radius: var(--radius-md);
      border: 1px solid var(--panel-border);
      background: var(--field);
      padding: 0 var(--space-sm);
      box-shadow: var(--elev-soft);
    }
    details.privacy-details summary {
      cursor: pointer;
      font-family: var(--font-display);
      font-weight: 600;
      padding: 14px 0;
      color: var(--title-ink);
      list-style: none;
    }
    details.privacy-details summary:hover {
      color: var(--accent);
    }
    details.privacy-details summary::-webkit-details-marker { display: none; }
    details.privacy-details .inner {
      padding-bottom: var(--space-sm);
      border-top: 1px solid var(--panel-border);
      padding-top: var(--space-sm);
    }
    details.privacy-details ul {
      margin: 0;
      padding-left: 1.15rem;
      color: var(--muted);
      font-family: var(--font-serif);
      font-size: 0.9rem;
    }
    details.privacy-details li { margin-bottom: 8px; }

    .callout {
      margin-top: var(--space-sm);
      padding: 12px 14px;
      border-radius: var(--radius-sm);
      background: color-mix(in srgb, var(--amber) 14%, var(--field));
      border: 1px solid color-mix(in srgb, var(--amber) 40%, var(--panel-border));
      font-family: var(--font-sans);
      font-size: 0.875rem;
      color: var(--ink);
    }

    footer {
      padding: var(--space-lg) 0 var(--space-md);
      border-top: 1px solid var(--panel-border);
      font-family: var(--font-display);
      font-size: 0.8125rem;
      color: var(--muted);
    }
    .footer-row {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      justify-content: space-between;
      align-items: center;
    }
    .footer-links {
      display: flex;
      flex-wrap: wrap;
      gap: 10px 14px;
    }
    .footer-links a {
      color: var(--muted);
      text-decoration: none;
      font-weight: 500;
    }
    .footer-links a:hover {
      color: var(--title-ink);
    }

    .footer-friends {
      margin-top: var(--space-md);
      padding-top: var(--space-sm);
      border-top: 1px solid var(--panel-border);
    }
    .footer-friends-title {
      margin: 0 0 10px;
      font-family: var(--font-display);
      font-size: 0.72rem;
      font-weight: 600;
      letter-spacing: 0.06em;
      text-transform: uppercase;
      color: var(--muted);
    }
    .footer-friends-links {
      max-width: 72ch;
    }

    .ticket-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 10px;
      margin-top: 12px;
    }

    @media (min-width: 900px) {
      .ticket-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
      }
    }

    .ticket {
      display: block;
      width: 100%;
      padding: 10px 12px;
      border-radius: 12px;
      background: var(--inset);
      border: 1px solid var(--panel-border);
      color: var(--ink);
      text-decoration: none;
      font: inherit;
      text-align: left;
      cursor: pointer;
      transition: transform 150ms ease, box-shadow 150ms ease, border-color 150ms ease;
    }

    button.ticket {
      -webkit-appearance: none;
      appearance: none;
    }

    .ticket:hover {
      border-color: var(--field-border);
      background: var(--inset);
    }

    .ticket[aria-pressed="true"] {
      border-color: color-mix(in srgb, var(--accent) 45%, var(--panel-border));
      background: color-mix(in srgb, var(--accent) 10%, var(--field));
    }

    .ticket-label {
      font-family: var(--font-display);
      font-weight: 650;
      letter-spacing: -0.01em;
    }

    .support-precheck h2 {
      margin: 0 0 var(--space-sm);
      font-size: clamp(1.05rem, 1.6vw, 1.2rem);
    }

    .support-precheck .checklist {
      margin: 0;
    }

    .support-split {
      display: grid;
      grid-template-columns: 1fr;
      gap: var(--space-sm);
      align-items: start;
    }

    @media (min-width: 940px) {
      .support-split {
        grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.35fr);
        gap: var(--space-md);
      }
    }

    .support-questions,
    .support-answer {
      padding: 18px 18px 16px;
      min-width: 0;
    }

    .support-answer {
      display: flex;
      flex-direction: column;
      gap: var(--space-sm);
      align-items: stretch;
    }

    .support-answer-scroll {
      flex: 1 1 auto;
      min-height: 0;
      min-width: 0;
      overflow: auto;
      -webkit-overflow-scrolling: touch;
      max-height: min(52vh, 480px);
    }

    @media (max-width: 939px) {
      .support-answer-scroll {
        max-height: none;
        overflow: visible;
      }
    }

    .support-q-list {
      margin-top: 10px;
      display: grid;
      gap: 8px;
      max-height: min(56vh, 520px);
      overflow: auto;
      padding-right: 4px;
    }

    @media (max-width: 939px) {
      .support-q-list { max-height: none; }
    }

    .support-q {
      display: block;
      width: 100%;
      text-align: left;
      padding: 10px 12px;
      border-radius: 12px;
      border: 1px solid var(--panel-border);
      background: color-mix(in srgb, var(--surface-100) 70%, transparent);
      color: var(--ink);
      cursor: pointer;
      transition: transform 150ms ease, box-shadow 150ms ease, border-color 150ms ease;
      font-family: var(--font-serif);
      font-size: 0.92rem;
      line-height: 1.35;
    }

    .support-q:hover {
      border-color: var(--field-border);
      background: var(--inset);
    }

    .support-q[aria-selected="true"] {
      border-color: color-mix(in srgb, var(--accent) 45%, var(--panel-border));
      background: color-mix(in srgb, var(--accent) 10%, var(--field));
    }

    .support-a-title {
      margin: 0 0 10px;
      font-family: var(--font-display);
      font-weight: 700;
      letter-spacing: -0.03em;
      overflow-wrap: anywhere;
      word-break: break-word;
    }

    .support-a-body {
      font-family: var(--font-serif);
      color: var(--muted);
      font-size: 0.95rem;
      line-height: 1.55;
    }

    .support-a-body p { margin: 0 0 10px; }
    .support-a-body p:last-child { margin-bottom: 0; }
    .support-a-body code { color: var(--ink); }

    .support-ticket {
      margin-top: 0;
      padding-top: var(--space-sm);
      border-top: 1px solid var(--panel-border);
      flex: 0 0 auto;
    }

    .support-verify {
      display: flex;
      align-items: flex-start;
      justify-content: flex-start;
      gap: 12px;
      flex-wrap: wrap;
    }

    .verify-row {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      user-select: none;
      font-family: var(--font-display);
      font-weight: 600;
      color: var(--ink);
      font-size: 0.9rem;
    }

    .verify-row input {
      width: 18px;
      height: 18px;
      accent-color: var(--accent);
    }

    .support-actions {
      margin-top: var(--space-md);
      margin-bottom: var(--space-sm);
      display: flex;
      flex-direction: column;
      align-items: stretch;
      gap: 0;
    }

    .support-mail-cta {
      width: 100%;
      justify-content: center;
      text-align: center;
      box-sizing: border-box;
    }

    a.btn[aria-disabled="true"],
    button.btn[aria-disabled="true"] {
      opacity: 0.55;
      cursor: not-allowed;
      pointer-events: none;
    }

    .btn-mini {
      padding: 6px 10px;
      font-size: 12px;
      border-radius: 10px;
    }

    .shortcut-grid {
      display: grid;
      gap: 12px;
    }

    @media (min-width: 980px) {
      .shortcut-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }
    }

    .shortcut-head {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 10px;
      margin-bottom: 8px;
    }

    .shortcut-title {
      margin: 0;
      font-size: 18px;
      letter-spacing: -0.01em;
    }

    .shortcut-row {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 8px 12px;
      padding: 10px 0;
      border-top: 1px solid var(--panel-border);
    }

    .shortcut-row:first-child {
      border-top: 0;
      padding-top: 0;
    }

    .shortcut-name {
      font-weight: 650;
      letter-spacing: -0.01em;
    }

    .shortcut-keys code {
      font-family: var(--font-mono);
      font-size: 12px;
      padding: 2px 6px;
      border-radius: 10px;
      background: var(--field);
      border: 1px solid var(--field-border);
      color: var(--title-ink);
      white-space: nowrap;
    }

    .shortcut-desc {
      grid-column: 1 / -1;
      color: var(--muted);
      font-size: 13px;
      line-height: 1.5;
    }

    .helper-dl-row {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 10px;
    }

    .automation-grid {
      display: grid;
      gap: var(--space-sm);
      grid-template-columns: 1fr;
    }

    @media (min-width: 900px) {
      .automation-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }
      .automation-card--wide {
        grid-column: 1 / -1;
      }
    }

    .automation-card h2 {
      margin-top: 0;
    }

    .automation-list {
      margin: 0;
      padding-left: 1.2rem;
      color: var(--muted);
      font-size: 0.95rem;
      line-height: 1.55;
    }

    .automation-list li {
      margin-bottom: 8px;
    }

    .automation-card .mt-sm {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }