*, *::before, *::after { box-sizing: border-box; }
  :root { --ts: 1; --tk: -0.018em; }   /* tweakable: display scale + tracking */
  html { scroll-behavior: smooth; }
  body {
    margin: 0;
    background: var(--surface-canvas);
    color: var(--text-primary);
    font-family: var(--font-sans);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }
  a { color: inherit; text-decoration: none; }
  button { font-family: inherit; }

  .wrap { max-width: var(--content-wide); margin: 0 auto; padding: 0 40px; }
  .serif { font-family: var(--font-serif); font-weight: 400; letter-spacing: var(--tk, -0.018em); }
  .mono  { font-family: var(--font-mono); font-feature-settings: "tnum" 1, "lnum" 1; }

  .overline {
    font-size: 12px; font-weight: 500; letter-spacing: 0.08em;
    text-transform: uppercase; color: var(--text-tertiary);
  }

  /* ---- Headline line semantics ----------------------------------
     Each .ln is one curated, hard line (set via data-i18n-html in the
     dict). Lines never re-wrap (white-space: nowrap) — the curated break
     holds at every width; instead, JS (fitHeadings() in landing.js) scales
     the font down so the longest line fits its column. Chinese keep-all is
     belt-and-suspenders. */
  .ln { display: block; white-space: nowrap; }
  /* balance only on headings that still wrap naturally (no curated .ln lines) */
  .demo-copy h2, .faq-head h2, .page-head h1 { text-wrap: balance; }
  /* Explicit lines drive the wrap, so drop the ch-based max-width that was
     tuned for natural wrapping (it would otherwise re-wrap each line). */
  h1:has(.ln), h2:has(.ln), h3:has(.ln) { max-width: none; }
  html[lang^="zh"] .ln { word-break: keep-all; }

  /* ---- Buttons --------------------------------------------------- */
  .btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    height: 46px; padding: 0 22px; border-radius: var(--radius-pill);
    font-size: 15px; font-weight: 500; cursor: pointer; border: 1px solid transparent;
    transition: background var(--duration-fast) var(--ease-standard),
                color var(--duration-fast) var(--ease-standard),
                border-color var(--duration-fast) var(--ease-standard),
                transform var(--duration-fast) var(--ease-standard);
    white-space: nowrap;
  }
  .btn:active { transform: scale(0.97); }
  .btn-ink   { background: var(--action-primary); color: var(--text-on-accent); }
  .btn-ink:hover { background: var(--action-primary-hover); }
  .btn-ghost { background: transparent; color: var(--text-primary); }
  .btn-ghost:hover { background: var(--surface-hover); }
  .btn-out   { background: var(--surface-card); color: var(--text-primary); border-color: var(--border-default); }
  .btn-out:hover { background: var(--surface-hover); }
  .btn-soon  { background: var(--surface-sunken); color: var(--text-tertiary); cursor: default; pointer-events: none; }
  .btn-soon:active { transform: none; }
  .btn-lg    { height: 54px; padding: 0 30px; font-size: 16px; }
  .btn-block { width: 100%; }

  /* ---- Language dropdown (footer, opens upward) ------------------ */
  .lang-dd { position: relative; display: inline-flex; }
  .lang-dd-btn {
    display: inline-flex; align-items: center; gap: 8px;
    font-family: var(--font-sans); font-size: 13px; font-weight: 500;
    color: var(--text-secondary); background: var(--surface-sunken);
    border: 1px solid transparent; border-radius: var(--radius-pill);
    padding: 9px 13px; cursor: pointer;
    transition: background var(--duration-fast) var(--ease-standard),
                color var(--duration-fast) var(--ease-standard),
                box-shadow var(--duration-fast) var(--ease-standard);
  }
  .lang-dd-btn .globe { width: 15px; height: 15px; color: var(--text-tertiary); flex: 0 0 auto; }
  .lang-dd-btn .chev  { width: 14px; height: 14px; color: var(--text-tertiary); flex: 0 0 auto; transition: transform var(--duration-base) var(--ease-standard); }
  .lang-dd-btn:hover { color: var(--text-primary); }
  .lang-dd-btn:focus-visible { outline: none; border-color: var(--iris-500); box-shadow: var(--shadow-focus); }
  .lang-dd.open .lang-dd-btn { color: var(--text-primary); background: var(--surface-active); }
  .lang-dd.open .lang-dd-btn .chev { transform: rotate(180deg); }

  .lang-dd-menu {
    position: absolute; bottom: calc(100% + 8px); right: 0;
    min-width: 156px; margin: 0; padding: 6px; list-style: none;
    background: var(--surface-card); border-radius: var(--radius-md);
    box-shadow: var(--shadow-dropdown);
    opacity: 0; transform: translateY(6px) scale(0.98); transform-origin: bottom right;
    pointer-events: none; z-index: 40;
    transition: opacity var(--duration-fast) var(--ease-standard),
                transform var(--duration-base) var(--ease-out);
  }
  .lang-dd.open .lang-dd-menu { opacity: 1; transform: translateY(0) scale(1); pointer-events: auto; }
  .lang-dd-menu li {
    display: flex; align-items: center; justify-content: space-between; gap: 14px;
    padding: 9px 11px; border-radius: var(--radius-sm);
    font-size: 13.5px; color: var(--text-secondary); cursor: pointer;
    transition: background var(--duration-fast) var(--ease-standard),
                color var(--duration-fast) var(--ease-standard);
  }
  .lang-dd-menu li:hover { background: var(--surface-hover); color: var(--text-primary); }
  .lang-dd-menu li[aria-selected="true"] { color: var(--text-primary); font-weight: 500; }
  .lang-dd-menu li .tick { width: 15px; height: 15px; color: var(--iris-600); opacity: 0; flex: 0 0 auto; }
  .lang-dd-menu li[aria-selected="true"] .tick { opacity: 1; }

  /* ---- Nav ------------------------------------------------------- */
  nav.bar {
    position: sticky; top: 0; z-index: 30;
    background: rgba(250,250,250,0.82); backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border-subtle);
  }
  .nav-in { display: flex; align-items: center; gap: 24px; height: 72px; }
  /* Three columns: logo (left) · links (centered) · auth (right).
     Equal-flex side columns keep the links group centered in the bar. */
  .nav-side { flex: 1 1 0; min-width: 0; display: flex; align-items: center; }
  .brand { display: flex; align-items: center; gap: 10px; }
  .mark { position: relative; width: 30px; height: 30px; border-radius: 9px; background: var(--slate-900); flex: 0 0 auto; }
  .mark .dot  { position: absolute; top: 5px; left: 50%; transform: translateX(-50%); width: 4.5px; height: 4.5px; border-radius: 999px; background: var(--iris-500); }
  .mark .stem { position: absolute; bottom: 5px; left: 50%; transform: translateX(-50%); width: 4px; height: 11px; border-radius: 2px; background: var(--slate-50); }
  .logo-mark { width: 30px; height: 30px; display: block; flex: 0 0 auto; }
  .brand .name { font-family: var(--font-serif); font-size: 23px; letter-spacing: -0.02em; }
  .wordmark { height: 25px; display: block; flex: 0 0 auto; }
  .nav-links { display: flex; align-items: center; gap: 28px; flex: 0 0 auto; }
  .nav-links a { font-size: 14px; font-weight: 500; color: var(--text-secondary); transition: color var(--duration-fast) var(--ease-standard); }
  .nav-links a:hover { color: var(--text-primary); }
  .nav-right { display: flex; align-items: center; gap: 14px; justify-content: flex-end; }

  /* ---- Nav dropdowns --------------------------------------------- */
  .nav-links .nav-item { position: relative; }
  .nav-links .nav-trigger {
    display: inline-flex; align-items: center; gap: 5px;
    font-size: 14px; font-weight: 500; color: var(--text-secondary);
    background: transparent; border: 0; cursor: pointer; padding: 0;
    font-family: var(--font-sans);
    transition: color var(--duration-fast) var(--ease-standard);
  }
  .nav-links .nav-trigger:hover,
  .nav-item.open .nav-trigger { color: var(--text-primary); }
  .nav-links .nav-trigger .chev { width: 13px; height: 13px; color: var(--text-tertiary);
    transition: transform var(--duration-base) var(--ease-standard); }
  .nav-item.open .nav-trigger .chev { transform: rotate(180deg); }
  .nav-menu {
    position: absolute; top: calc(100% + 10px); left: 0;
    min-width: 220px; margin: 0; padding: 8px; list-style: none;
    background: var(--surface-card); border-radius: var(--radius-md);
    box-shadow: var(--shadow-dropdown);
    opacity: 0; transform: translateY(6px) scale(0.98); transform-origin: top left;
    pointer-events: none; z-index: 40;
    transition: opacity var(--duration-fast) var(--ease-standard),
                transform var(--duration-base) var(--ease-out);
  }
  .nav-item.open .nav-menu { opacity: 1; transform: none; pointer-events: auto; }
  .nav-menu a {
    display: block; padding: 9px 11px; border-radius: var(--radius-sm);
    font-size: 13.5px; color: var(--text-secondary);
    transition: background var(--duration-fast) var(--ease-standard), color var(--duration-fast) var(--ease-standard);
  }
  .nav-menu a:hover { background: var(--surface-hover); color: var(--text-primary); }

  /* ---- Mobile hamburger + menu sheet (hidden until ≤860px) ------- */
  .nav-burger {
    display: none; /* revealed in the ≤860px query */
    width: 42px; height: 42px; flex: 0 0 auto;
    align-items: center; justify-content: center;
    border: 0; border-radius: var(--radius-pill); background: transparent;
    color: var(--text-primary); cursor: pointer;
    transition: background var(--duration-fast) var(--ease-standard);
  }
  .nav-burger:hover { background: var(--surface-hover); }
  .nav-burger:active { transform: scale(0.94); }
  .nav-burger .bars { position: relative; width: 18px; height: 12px; }
  .nav-burger .bars span {
    position: absolute; left: 0; width: 100%; height: 1.6px; border-radius: 2px;
    background: currentColor;
    transition: transform var(--duration-base) var(--ease-standard),
                opacity var(--duration-fast) var(--ease-standard),
                top var(--duration-base) var(--ease-standard);
  }
  .nav-burger .bars span:nth-child(1) { top: 0; }
  .nav-burger .bars span:nth-child(2) { top: 5px; }
  .nav-burger .bars span:nth-child(3) { top: 10px; }
  .nav-burger[aria-expanded="true"] .bars span:nth-child(1) { top: 5px; transform: rotate(45deg); }
  .nav-burger[aria-expanded="true"] .bars span:nth-child(2) { opacity: 0; }
  .nav-burger[aria-expanded="true"] .bars span:nth-child(3) { top: 5px; transform: rotate(-45deg); }

  .mobile-menu {
    display: none; /* set to block only inside the ≤860px query */
    position: fixed; left: 0; right: 0; top: 72px; bottom: 0; z-index: 25;
    background: var(--surface-canvas);
    overflow-y: auto; -webkit-overflow-scrolling: touch;
    opacity: 0; visibility: hidden; transform: translateY(-6px);
    transition: opacity var(--duration-base) var(--ease-standard),
                transform var(--duration-base) var(--ease-out),
                visibility var(--duration-base) var(--ease-standard);
  }
  .mobile-menu.open { opacity: 1; visibility: visible; transform: none; }
  .mobile-menu-in { display: flex; flex-direction: column; padding: 14px 0 40px; }
  .m-nav { display: flex; flex-direction: column; }
  /* Top-level rows: plain links (Pricing) and accordion triggers share one look,
     mirroring the desktop nav where Pricing is plain and Resources/About open. */
  .m-link,
  .m-group-trigger {
    display: flex; align-items: center; width: 100%; padding: 16px 6px;
    font-size: 19px; font-weight: 500; color: var(--text-primary);
    border-bottom: 1px solid var(--border-subtle);
    font-family: var(--font-sans);
    transition: color var(--duration-fast) var(--ease-standard);
  }
  .m-link:hover, .m-link:active,
  .m-group-trigger:hover { color: var(--text-accent); }
  .m-group-trigger {
    justify-content: space-between; gap: 12px; text-align: left;
    background: transparent; border-top: 0; border-left: 0; border-right: 0;
    cursor: pointer;
  }
  .m-group-trigger .chev {
    width: 16px; height: 16px; flex: 0 0 auto; color: var(--text-tertiary);
    transition: transform var(--duration-base) var(--ease-standard);
  }
  .m-group.open .m-group-trigger .chev { transform: rotate(180deg); }
  /* Collapsible panel — the 0fr→1fr grid-rows trick animates height with no
     magic pixel value; the inner wrapper's overflow:hidden clips during collapse. */
  .m-group-panel {
    display: grid; grid-template-rows: 0fr;
    transition: grid-template-rows var(--duration-base) var(--ease-out);
  }
  .m-group.open .m-group-panel { grid-template-rows: 1fr; }
  .m-group-panel-in { overflow: hidden; }
  .m-sublink {
    display: block; padding: 13px 6px 13px 18px;
    font-size: 16px; color: var(--text-secondary);
    border-bottom: 1px solid var(--border-subtle);
    transition: color var(--duration-fast) var(--ease-standard);
  }
  .m-sublink:hover, .m-sublink:active { color: var(--text-accent); }
  .m-cta { display: flex; flex-direction: column; gap: 12px; margin-top: 28px; }
  body.menu-open { overflow: hidden; }

  /* ---- Hero (fills the first screen) ----------------------------- */
  .hero { min-height: calc(100vh - 72px); min-height: calc(100svh - 72px); display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: 56px 0; }
  /* The flex column centers via align-items, which would shrink-wrap .wrap to
     the widest nowrap headline and let it overflow. Pin it to full width so the
     column tracks the viewport and fitHeadings() can measure real available space. */
  .hero .wrap { width: 100%; }
  .hero h1 {
    margin: 24px auto 0;
    font-size: calc(var(--ts) * 76px);   /* desktop max; JS fitHeadings() scales down to fit */
    line-height: calc(0.99em + 3px);     /* additive leading: tight when big, looser when small */
    letter-spacing: -0.014em;
  }
  .hero p.sub { margin: 28px auto 0; max-width: 60ch; font-size: 20px; line-height: 1.6; color: var(--text-secondary); }
  .hero .cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-top: 36px; }
  .hero .note { margin-top: 18px; font-size: 13px; color: var(--text-tertiary); }
  /* Split hero — copy left, globe right (China to the world, single-hue iris) */
  .hero-grid { display: grid; grid-template-columns: 1.04fr 0.96fr; align-items: center; gap: clamp(28px, 4vw, 72px); text-align: left; }
  .hero-copy { min-width: 0; }
  .hero-grid h1 { margin: 0; }
  .hero-grid p.sub { margin: 24px 0 0; max-width: 44ch; }
  .hero-grid .cta { justify-content: flex-start; }
  .hero-globe { width: 100%; max-width: 540px; margin: 0; justify-self: center; aspect-ratio: 1 / 1; }
  .hero-globe canvas { display: block; width: 100%; height: 100%; touch-action: pan-y; }

  /* Product showcase — the visual, just below the fold */
  .showcase { padding: 4px 0 var(--section-sm); }
  image-slot { display: block; width: 100%; }

  /* ---- Trust strip ----------------------------------------------- */
  .trust { padding: 8px 0 var(--section-sm); text-align: center; }
  .trust .trust-label { font-size: 13px; letter-spacing: 0.04em; color: var(--text-tertiary); }
  .trust .logos { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 18px 40px; margin-top: 26px; }
  .trust .logo-ghost { width: 116px; height: 30px; border-radius: var(--radius-sm); background: var(--surface-sunken); }

  /* ---- Platform coverage ----------------------------------------- */
  .coverage { padding: var(--section-sm) 0; }
  .coverage .cov-head { text-align: center; }
  .coverage h2 { margin: 14px auto 0; font-size: var(--display-md); line-height: 1.12; }
  .coverage p.cov-sub { margin: 16px auto 0; max-width: 52ch; font-size: 17px; line-height: 1.6; color: var(--text-secondary); }
  .coverage .cov-media { margin-top: 44px; }

  /* ---- Platform marquee (走马灯) --------------------------------- */
  .pm-marquee {
    margin-top: 48px; position: relative; overflow: hidden;
    -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
            mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  }
  .pm-row {
    display: flex; width: max-content; align-items: center; gap: 64px; padding: 16px 32px;
    animation: pm-scroll 42s linear infinite; will-change: transform;
  }
  .pm-row.pm-rev { animation-direction: reverse; animation-duration: 52s; margin-top: 4px; }
  .pm-marquee:hover .pm-row { animation-play-state: paused; }
  @keyframes pm-scroll { to { transform: translateX(-50%); } }
  .pm-logo {
    height: 26px; width: auto; max-width: 116px; object-fit: contain; flex: 0 0 auto;
    opacity: 0.6; transition: opacity 0.2s ease;
  }
  .pm-logo:hover { opacity: 1; }
  @media (prefers-reduced-motion: reduce) { .pm-row { animation: none; } }

  /* ---- Metrics band (dark) --------------------------------------- */
  .band { background: var(--surface-inverse); color: var(--text-inverse); padding: 116px 0; }
  .band .eyebrow { text-align: center; color: var(--iris-300); font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; }
  .band h2 { text-align: center; margin: 16px auto 0; font-size: var(--display-lg); line-height: 1.12; color: var(--slate-50); }
  .metrics { display: grid; grid-template-columns: repeat(5, 1fr); gap: 28px; margin-top: 76px; }
  .metric { text-align: center; padding: 0 8px; }
  .metric .num { font-family: var(--font-mono); font-weight: 500; font-size: 48px; line-height: 1; letter-spacing: -0.02em; color: var(--slate-50); font-feature-settings: "tnum" 1, "lnum" 1; }
  .metric .num.accent { color: var(--iris-300); }
  .metric .cap { margin-top: 16px; font-size: 13.5px; line-height: 1.45; color: var(--slate-400); }

  /* ---- Features -------------------------------------------------- */
  .feat-head { text-align: center; padding: var(--section) 0 8px; }
  .feat-head h2 { margin: 16px auto 0; font-size: var(--display-lg); line-height: 1.1; }
  .feat-head p { margin: 16px auto 0; max-width: 54ch; font-size: 18px; line-height: 1.6; color: var(--text-secondary); }
  section.feat { padding: 64px 0; }
  .feat-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
  /* A 1fr track's implicit min-width:auto grows to its content's min-content; a
     nowrap .ln heading can push that past the viewport and break the layout
     (and starve fitHeadings of a real column width). min-width:0 caps the track
     to its share so headings size and shrink against the actual column. */
  .feat-grid > * { min-width: 0; }
  .feat-grid.rev .copy { order: 2; }
  .feat .copy h3 { margin: 16px 0 0; font-size: var(--display-md); line-height: 1.1; }
  .feat .copy p.lead { margin: 22px 0 0; font-size: 18px; line-height: 1.62; color: var(--text-secondary); max-width: 46ch; }
  .feat .copy .bullets { list-style: none; margin: 24px 0 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 10px 20px; }
  .feat .copy .bullets li { display: flex; align-items: center; gap: 8px; font-size: 14.5px; color: var(--text-primary); }
  .feat .copy .bullets li::before { content: ""; width: 5px; height: 5px; border-radius: 999px; background: var(--iris-500); flex: 0 0 auto; }

  /* AI chat demo card (feature 3) */
  .ai-chat {
    background: var(--surface-card); border-radius: var(--radius-2xl);
    padding: 28px; box-shadow: var(--shadow-ai-panel);
    display: flex; flex-direction: column; gap: 18px;
  }
  .ai-chat .msg-user {
    align-self: flex-end; max-width: 82%;
    background: var(--surface-active); padding: 12px 16px;
    border-radius: 18px 18px 4px 18px; font-size: 15px; line-height: 1.5;
  }
  .ai-chat .msg-agent { display: flex; gap: 12px; }
  .ai-chat .ava {
    flex: 0 0 auto; width: 30px; height: 30px; border-radius: 999px;
    background: var(--slate-900); color: var(--iris-300);
    display: inline-flex; align-items: center; justify-content: center;
    font-family: var(--font-serif); font-size: 16px;
  }
  .ai-chat .msg-agent .body { font-size: 15px; line-height: 1.62; color: var(--text-primary); }
  .ai-chat .msg-agent .body b { font-weight: 600; }
  .caret { display: inline-block; width: 8px; height: 1.05em; vertical-align: text-bottom; background: var(--iris-600); border-radius: 1px; margin-left: 2px; animation: blink 1s steps(1) infinite; }
  @keyframes blink { 0%,100% { opacity: 1; } 50% { opacity: 0; } }

  /* ---- Solutions / use-cases ------------------------------------- */
  .solutions { padding: var(--section) 0; }
  .sol-head { text-align: center; }
  .sol-head h2 { margin: 14px auto 0; font-size: var(--display-lg); line-height: 1.12; }
  .sol-head p { margin: 16px auto 0; max-width: 54ch; font-size: 18px; line-height: 1.6; color: var(--text-secondary); }
  .sol-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-top: 56px; }
  .sol-card { background: var(--surface-card); border-radius: var(--radius-2xl); padding: 30px 28px; box-shadow: var(--shadow-card); }
  .sol-card .sol-name { font-family: var(--font-serif); font-size: 22px; letter-spacing: -0.018em; }
  .sol-card p { margin: 12px 0 0; font-size: 15.5px; line-height: 1.62; color: var(--text-secondary); }

  /* ---- Pricing --------------------------------------------------- */
  .pricing { padding: var(--section) 0; }
  .pricing-head { text-align: center; }
  .pricing-head h1, .pricing-head h2 { margin: 16px auto 0; font-size: var(--display-lg); line-height: 1.1; }
  .pricing-head h1 { margin-top: 0; }
  .pricing-head p { margin: 18px auto 0; max-width: 44ch; font-size: 18px; line-height: 1.6; color: var(--text-secondary); }

  .bill-toggle {
    display: inline-flex; align-items: center; gap: 4px;
    margin: 36px auto 0; padding: 4px; border-radius: var(--radius-pill);
    background: var(--surface-sunken); position: relative;
  }
  .bill-toggle button {
    border: 0; background: transparent; cursor: pointer;
    padding: 9px 20px; border-radius: 12px;
    font-size: 14px; font-weight: 500; color: var(--text-secondary);
    transition: background var(--duration-fast) var(--ease-standard), color var(--duration-fast) var(--ease-standard);
  }
  .bill-toggle button[aria-pressed="true"] { background: var(--surface-card); color: var(--text-primary); box-shadow: var(--shadow-card); }
  /* Promo flag — now lives inside the entry plan card, not the toggle. */
  .save-badge {
    position: absolute; top: 20px; right: 20px;
    padding: 5px 12px; border-radius: 999px;
    background: var(--iris-50); color: var(--iris-700);
    font-size: 12px; font-weight: 600; letter-spacing: 0.01em;
  }

  .plans { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 56px; align-items: start; }
  .plan {
    background: var(--surface-card); border-radius: var(--radius-2xl);
    padding: 34px 26px; display: flex; flex-direction: column;
    box-shadow: var(--shadow-card); position: relative;
  }
  .plan.featured { box-shadow: var(--shadow-card-hover); outline: 1.5px solid var(--iris-200); }
  .plan .pop-badge {
    position: absolute; top: 20px; right: 20px;
    padding: 5px 12px; border-radius: 999px;
    background: var(--iris-700); color: var(--slate-50);
    font-size: 12px; font-weight: 600;
  }
  .plan .plan-name { font-family: var(--font-serif); font-size: 28px; letter-spacing: -0.018em; }
  .plan .plan-for { margin-top: 8px; font-size: 14px; line-height: 1.5; color: var(--text-secondary); min-height: 42px; }
  .plan .price { margin-top: 26px; display: flex; align-items: baseline; gap: 8px; }
  .plan .price-was { font-family: var(--font-mono); font-size: 18px; color: var(--text-tertiary); text-decoration: line-through; }
  .plan .price-amount { font-family: var(--font-mono); font-weight: 500; font-size: 52px; line-height: 1; letter-spacing: -0.02em; color: var(--text-primary); }
  .plan .price-amount.masked { position: relative; display: inline-block; color: var(--text-tertiary); letter-spacing: 0; }
  .plan .price-amount.masked .masked-num { display: inline-block; filter: blur(9px); opacity: 0.7; user-select: none; pointer-events: none; }
  .plan .price-amount.masked::after {
    content: ""; position: absolute; inset: -4px -10px; border-radius: 12px; pointer-events: none;
    background: linear-gradient(160deg, rgba(255,255,255,0.34), rgba(243,243,246,0.08));
  }
  .plan .price-period { font-size: 15px; color: var(--text-secondary); }
  .plan .price-billed { margin-top: 10px; font-size: 13px; color: var(--text-tertiary); min-height: 18px; }
  .plan .plan-cta { margin-top: 26px; }
  .plan .feat-list { list-style: none; margin: 30px 0 0; padding: 26px 0 0; border-top: 1px solid var(--border-subtle); display: flex; flex-direction: column; gap: 15px; }
  .plan .feat-list li { display: flex; align-items: center; justify-content: space-between; gap: 12px; font-size: 14.5px; color: var(--text-primary); }
  .plan .feat-list .val { font-family: var(--font-mono); font-size: 13.5px; color: var(--text-secondary); }
  .plan .feat-list .tick { color: var(--iris-600); display: inline-flex; }
  .plan .feat-list .tick svg { width: 18px; height: 18px; }
  .plan .feat-list .dash { color: var(--text-disabled); }
  /* Swipe dots live under the plans; only the mobile carousel shows them. */
  .plans-dots { display: none; }

  /* ---- Closing CTA + demo-request form (dark) -------------------- */
  .feat-head, .pricing, .faq { scroll-margin-top: 88px; }
  .demo { background: var(--surface-inverse); color: var(--text-inverse); padding: var(--section) 0; scroll-margin-top: 88px; }
  .demo-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 72px; align-items: center; }
  .demo-copy .overline { color: var(--iris-300); }
  .demo-copy h2 { margin: 16px 0 0; max-width: 14ch; font-size: calc(var(--ts) * 52px); line-height: 1.07; color: var(--slate-50); }
  .demo-copy p.csub { margin: 22px 0 0; max-width: 42ch; font-size: 18px; line-height: 1.6; color: var(--slate-400); }
  .demo-copy .alt { margin: 26px 0 0; font-size: 15px; color: var(--slate-400); }
  .demo-copy .alt a { color: var(--iris-300); font-weight: 500; }
  .demo-copy .alt a:hover { color: var(--iris-200); }

  .demo-card { background: var(--surface-card); color: var(--text-primary); border-radius: var(--radius-2xl); padding: 34px; box-shadow: var(--shadow-ai-panel); }
  .field { display: flex; flex-direction: column; gap: 7px; margin-bottom: 16px; }
  .field label { font-size: 13px; font-weight: 500; color: var(--text-secondary); }
  .field input { height: 46px; border-radius: 10px; border: 1px solid var(--border-default); padding: 0 14px; font-family: var(--font-sans); font-size: 15px; color: var(--text-primary); background: var(--surface-card); transition: border-color var(--duration-fast) var(--ease-standard), box-shadow var(--duration-fast) var(--ease-standard); }
  .field input::placeholder { color: var(--text-tertiary); }
  .field input:focus { outline: none; border-color: var(--iris-500); box-shadow: 0 0 0 3px rgba(113,113,178,0.32); }
  .field.invalid input { border-color: var(--error); }
  .field.invalid input:focus { box-shadow: 0 0 0 3px rgba(158,76,90,0.26); }
  .field .err { font-size: 13px; color: var(--error); }
  .demo-card .submit { margin-top: 22px; }
  .submit[aria-busy="true"] { opacity: 0.72; pointer-events: none; }
  .form-error { margin-top: 14px; font-size: 13.5px; line-height: 1.5; color: var(--error); text-align: center; }

  /* ---- Date + time picker (Calendly-style popover) ---------------- */
  .datepick { position: relative; }
  .datepick-trigger {
    width: 100%; height: 46px; border-radius: 10px; border: 1px solid var(--border-default);
    padding: 0 14px; background: var(--surface-card); font-family: var(--font-sans);
    font-size: 15px; color: var(--text-primary); cursor: pointer;
    display: flex; align-items: center; justify-content: space-between; gap: 8px;
    transition: border-color var(--duration-fast) var(--ease-standard), box-shadow var(--duration-fast) var(--ease-standard);
  }
  .datepick-trigger.placeholder .dp-label { color: var(--text-tertiary); }
  .datepick-trigger .cal-ico { width: 16px; height: 16px; color: var(--text-tertiary); flex: 0 0 auto; }
  .datepick-trigger:hover { border-color: var(--iris-300); }
  .datepick.open .datepick-trigger { outline: none; border-color: var(--iris-500); box-shadow: 0 0 0 3px rgba(113,113,178,0.32); }

  .datepick-pop {
    position: absolute; top: calc(100% + 8px); left: 0; z-index: 50;
    width: 340px; max-width: 100%;
    background: var(--surface-card); border-radius: var(--radius-md); box-shadow: var(--shadow-dropdown);
    padding: 14px;
    opacity: 0; visibility: hidden; transform: translateY(6px) scale(0.99); transform-origin: top left; pointer-events: none;
    transition: opacity var(--duration-fast) var(--ease-standard), transform var(--duration-base) var(--ease-out), visibility var(--duration-base) var(--ease-out);
  }
  .datepick.open .datepick-pop { opacity: 1; visibility: visible; transform: none; pointer-events: auto; }

  .dp-body { display: flex; gap: 12px; }
  .dp-cal { flex: 0 0 188px; }

  .dp-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 6px; }
  .dp-title { font-size: 13px; font-weight: 600; color: var(--text-primary); }
  .dp-nav { display: inline-flex; gap: 2px; }
  .dp-nav button { width: 24px; height: 24px; border-radius: 6px; border: 0; background: transparent; color: var(--text-secondary); cursor: pointer; display: inline-flex; align-items: center; justify-content: center; }
  .dp-nav button:hover:not(:disabled) { background: var(--surface-hover); color: var(--text-primary); }
  .dp-nav button:disabled { opacity: 0.35; cursor: default; }
  .dp-nav svg { width: 14px; height: 14px; }

  .dp-dow, .dp-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 1px; }
  .dp-dow span { text-align: center; font-size: 10px; color: var(--text-tertiary); padding: 2px 0; }
  .dp-day { height: 25px; border: 0; background: transparent; border-radius: 6px; font-family: var(--font-mono); font-size: 12px; color: var(--text-primary); cursor: pointer; display: flex; align-items: center; justify-content: center; transition: background var(--duration-fast) var(--ease-standard), color var(--duration-fast) var(--ease-standard); }
  .dp-day.blank { pointer-events: none; }
  .dp-day:hover:not(:disabled):not(.blank) { background: var(--surface-hover); }
  .dp-day:disabled { color: var(--text-disabled); cursor: default; }
  .dp-day.today:not(.sel) { box-shadow: inset 0 0 0 1px var(--iris-200); }
  .dp-day.sel { background: var(--iris-700); color: var(--slate-50); }

  .dp-times { flex: 1; min-width: 0; display: flex; flex-direction: column; border-left: 1px solid var(--border-subtle); padding-left: 12px; }
  .dp-times-label { font-size: 10px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-tertiary); margin-bottom: 6px; }
  .dp-slots { display: flex; flex-direction: column; gap: 6px; max-height: 176px; overflow: auto; padding-right: 2px; }
  .dp-slot { flex: 0 0 auto; border: 1px solid var(--border-default); background: var(--surface-card); border-radius: 8px; padding: 7px 0; font-family: var(--font-mono); font-size: 12.5px; color: var(--text-primary); cursor: pointer; transition: border-color var(--duration-fast) var(--ease-standard), background var(--duration-fast) var(--ease-standard), color var(--duration-fast) var(--ease-standard); }
  .dp-slot:hover:not(:disabled) { border-color: var(--iris-500); }
  .dp-slot:disabled { color: var(--text-disabled); cursor: default; }
  .dp-slot.booked { text-decoration: line-through; background: var(--surface-canvas); border-style: dashed; }
  .dp-slot.sel { background: var(--iris-700); color: var(--slate-50); border-color: var(--iris-700); }
  .dp-foot { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-top: 12px; padding-top: 10px; border-top: 1px solid var(--border-subtle); }
  .dp-tz { display: inline-flex; align-items: center; gap: 6px; min-width: 0; overflow: hidden; color: var(--text-secondary); }
  .dp-tz svg { width: 14px; height: 14px; color: var(--text-tertiary); flex: 0 0 auto; }
  .dp-tz-select { border: 0; background: transparent; font-family: var(--font-sans); font-size: 12.5px; color: var(--text-secondary); cursor: pointer; min-width: 0; max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .dp-tz-select:focus-visible { outline: none; color: var(--text-primary); }
  .dp-clear { flex: 0 0 auto; background: transparent; border: 0; color: var(--text-tertiary); font-size: 12.5px; cursor: pointer; padding: 4px; }
  .dp-clear:hover { color: var(--text-secondary); }
  .dp-actions { display: inline-flex; align-items: center; gap: 8px; flex: 0 0 auto; }
  .dp-done { background: var(--iris-700); color: var(--slate-50); border: 0; border-radius: 8px; font-family: var(--font-sans); font-size: 12.5px; font-weight: 600; padding: 7px 16px; cursor: pointer; transition: opacity var(--duration-fast) var(--ease-standard); }
  .dp-done:hover:not(:disabled) { opacity: 0.9; }
  .dp-done:disabled { background: var(--surface-hover); color: var(--text-disabled); cursor: default; }
  .demo-success { text-align: center; padding: 28px 8px 20px; }
  .demo-success .mark { width: 56px; height: 56px; border-radius: 999px; background: var(--iris-50); color: var(--iris-700); display: inline-flex; align-items: center; justify-content: center; margin: 0 auto 20px; }
  .demo-success .mark svg { width: 26px; height: 26px; }
  .demo-success h3 { font-family: var(--font-serif); font-weight: 400; letter-spacing: -0.018em; font-size: 28px; }
  .demo-success p { margin-top: 12px; font-size: 15px; line-height: 1.6; color: var(--text-secondary); }

  /* ---- FAQ (compact accordion) ----------------------------------- */
  .faq { padding: var(--section-sm) 0; scroll-margin-top: 88px; }
  .faq-inner { max-width: 760px; margin: 0 auto; }
  .faq-head { text-align: center; margin-bottom: 36px; }
  .faq-head h2 { margin: 14px auto 0; font-size: calc(var(--ts) * 34px); line-height: 1.12; }
  .faq-list { border-top: 1px solid var(--border-subtle); }
  .faq-item { border-bottom: 1px solid var(--border-subtle); }
  .faq-item summary { list-style: none; cursor: pointer; display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 22px 4px; font-size: 17px; font-weight: 500; color: var(--text-primary); transition: color var(--duration-fast) var(--ease-standard); }
  .faq-item summary::-webkit-details-marker { display: none; }
  .faq-item summary:hover { color: var(--text-accent); }
  .faq-item .chev { flex: 0 0 auto; display: inline-flex; align-items: center; justify-content: center; color: var(--text-tertiary); transition: transform 220ms var(--ease-standard), color var(--duration-fast) var(--ease-standard); }
  .faq-item .chev svg { width: 20px; height: 20px; }
  .faq-item[open] summary .chev { transform: rotate(180deg); color: var(--text-accent); }
  .faq-answer { padding: 0 4px 24px; font-size: 15.5px; line-height: 1.65; color: var(--text-secondary); max-width: 66ch; }
  .faq-foot-cta { margin: 32px 0 0; text-align: center; font-size: 15.5px; color: var(--text-secondary); }
  .faq-foot-cta a { color: var(--text-accent); font-weight: 500; text-decoration: none; transition: color var(--duration-fast) var(--ease-standard); }
  .faq-foot-cta a:hover { color: var(--text-accent-strong, var(--text-accent)); text-decoration: underline; }

  /* ---- Footer ---------------------------------------------------- */
  footer { border-top: 1px solid var(--border-subtle); padding: 96px 0 44px; }
  .foot-grid { display: grid; grid-template-columns: 2.2fr 1fr 1fr 1fr; gap: 48px; align-items: start; }
  .foot-statement { font-family: var(--font-serif); font-weight: 400; letter-spacing: var(--tk, -0.018em); font-size: 24px; line-height: 1.2; color: var(--text-primary); max-width: 16ch; margin: 20px 0 0; }
  .foot-tag { font-size: 14px; color: var(--text-tertiary); max-width: 34ch; line-height: 1.6; margin: 14px 0 0; }
  .socials { display: flex; gap: 10px; margin-top: 22px; }
  .socials a { width: 38px; height: 38px; border-radius: 999px; display: inline-flex; align-items: center; justify-content: center; color: var(--text-tertiary); background: var(--surface-sunken); transition: background var(--duration-fast) var(--ease-standard), color var(--duration-fast) var(--ease-standard), transform var(--duration-fast) var(--ease-standard); }
  .socials a:hover { background: var(--action-primary); color: var(--text-on-accent); }
  .socials a:active { transform: scale(0.94); }
  .socials svg { width: 17px; height: 17px; }
  .foot-col h4 { margin: 0 0 16px; font-size: 12px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-tertiary); font-weight: 500; }
  .foot-col a { display: block; font-size: 14px; color: var(--text-secondary); margin-bottom: 12px; }
  .foot-col a:hover { color: var(--text-primary); }
  .foot-bottom { display: flex; justify-content: space-between; align-items: center; gap: 24px; margin-top: 64px; padding-top: 24px; border-top: 1px solid var(--border-subtle); font-size: 13px; color: var(--text-tertiary); }

  /* ---- Content renders statically and always visible. The design
     system favors calm; no from-hidden entrances that a paused or
     backgrounded render context could trap at opacity 0. The
     .reveal hooks are kept inert for an optional future entrance. - */
  .reveal { opacity: 1; transform: none; }

  /* ---- Responsive ------------------------------------------------ */
  @media (max-width: 1040px) {
    .metrics { grid-template-columns: repeat(3, 1fr); gap: 44px 24px; }
    .plans { grid-template-columns: repeat(2, 1fr); max-width: 680px; margin-left: auto; margin-right: auto; }
  }
  @media (max-width: 860px) {
    .wrap { padding: 0 22px; }
    /* Collapse desktop nav into the hamburger sheet; auth lives in the sheet. */
    .nav-links { display: none; }
    .nav-right .btn-signin, .nav-right .btn-ink { display: none; }
    .nav-burger { display: inline-flex; }
    .mobile-menu { display: block; }
    /* Trim the marketing vertical rhythm so phones don't feel empty. */
    .band { padding: 72px 0; }
    .metrics { margin-top: 48px; }
    .feat-head { padding: 80px 0 4px; }
    section.feat { padding: 44px 0; }
    .solutions, .pricing, .demo { padding: 80px 0; }
    .hero { padding: 64px 0 40px; min-height: auto; }
    .hero p.sub { font-size: 17px; }
    /* Stack the split: copy first (centered), whole globe below the fold-free */
    .hero-grid { grid-template-columns: 1fr; text-align: center; gap: 8px; }
    .hero-grid h1 { margin: 0 auto; }
    .hero-grid p.sub { margin: 22px auto 0; max-width: 17em; }
    .hero-grid .cta { justify-content: center; }
    .hero-globe { margin: 30px auto 0; max-width: 400px; }
    .feat-grid { grid-template-columns: 1fr; gap: 36px; }
    .feat-grid.rev .copy { order: 0; }
    /* The demo videos are near-square app frames shown at a fixed 440px with
       object-fit:cover — fine in the desktop two-column grid, but once the grid
       is single-column the box ratio no longer matches and cover crops away the
       real content (results table), leaving a grey void. Drop the fixed height so
       each video shows its full frame at the column's natural aspect ratio. */
    .feat-demo { height: auto !important; object-fit: contain; }
    .feat .copy .bullets { grid-template-columns: 1fr; }
    .metrics { grid-template-columns: repeat(2, 1fr); }
    /* The mono metric numbers stay 48px while their captions and everything
       around them shrink on mobile — oversized and jarring once stacked. Scale
       them down with the layout. */
    .metric .num { font-size: 40px; }
    .demo-grid { grid-template-columns: 1fr; gap: 40px; }
    .demo-copy h2 { font-size: calc(var(--ts) * 36px); }
    .showcase image-slot { height: 340px !important; }
    .coverage .cov-media { height: 320px !important; }
    .sol-grid { grid-template-columns: 1fr; }
    .foot-grid { grid-template-columns: 1fr 1fr; gap: 36px 24px; }
    .foot-statement { font-size: 21px; }
  }
  @media (max-width: 680px) {
    /* Three stacked full-height cards make for a long, monotonous scroll — and
       two of the tiers aren't even buyable yet. Turn the grid into a horizontal
       swipe carousel: one card tall, snap per card, with the next card peeking
       to signal there's more. Full-bleed via negative margin, re-inset by the
       same padding so the first card lines up with the rest of the page. */
    .plans {
      display: flex; grid-template-columns: none; max-width: none;
      margin: 48px -22px 0; padding: 4px 22px 6px; gap: 14px;
      align-items: stretch;
      overflow-x: auto; scroll-snap-type: x mandatory; scroll-padding-left: 22px;
      -webkit-overflow-scrolling: touch; scrollbar-width: none;
    }
    .plans::-webkit-scrollbar { display: none; }
    .plan { flex: 0 0 84%; scroll-snap-align: start; }
    .plans-dots { display: flex; justify-content: center; gap: 8px; margin-top: 22px; }
    .plans-dots .pd {
      width: 7px; height: 7px; border-radius: 999px;
      background: var(--border-strong, #cbd5e1);
      transition: width 0.25s ease, background 0.25s ease;
    }
    .plans-dots .pd[aria-current="true"] { width: 22px; background: var(--iris-600); }
  }
  @media (max-width: 460px) {
    .metrics { grid-template-columns: 1fr; gap: 36px; }
    .metric .num { font-size: 34px; }
    .nav-right .btn-demo { display: none; }
  }

  /* ---- Phone-only refinements (≤600px) --------------------------- */
  @media (max-width: 600px) {
    /* Chinese hero is dense full-width CJK glyphs (and falls back to a heavier
       CJK serif — Newsreader is Latin-only). fitHeadings() only shrinks a line
       until it *fills* the column, so on a phone the zh hero ends up edge-to-edge
       with no breathing room, while proportional Latin reads airier at the same
       fit. Cap the zh hero smaller here; fitHeadings honors it as the ceiling. */
    html[lang^="zh"] .hero h1 { font-size: clamp(32px, 10.5vw, 52px); }
    /* Per-feature serif titles are nowrap curated lines capped at 15ch on desktop;
       on a phone that cap lets the long zh lines spill past the column and clip.
       Drop it here so fitHeadings() sizes them against the real column width. */
    .feat .copy h3 { max-width: none; }
    /* solutions/pricing titles wrap naturally (no .ln), so fitHeadings leaves them
       flush; cap the zh ones on phones for the same side breathing room. */
    html[lang^="zh"] :is(.sol-head h2, .pricing-head h1, .pricing-head h2) {
      font-size: clamp(28px, 8.5vw, 36px);
    }

    .demo-card { padding: 24px 20px; }
    /* The date+time picker can't hold two columns on a phone — stack it,
       let it fill the card width, and lay the slots out as a grid. */
    .datepick-pop { width: 100%; left: 0; right: 0; padding: 16px; }
    .dp-body { flex-direction: column; gap: 16px; }
    .dp-cal { flex: 1 1 auto; }
    .dp-day { height: 34px; font-size: 13px; }
    .dp-times {
      border-left: 0; padding-left: 0;
      border-top: 1px solid var(--border-subtle); padding-top: 14px;
    }
    .dp-slots {
      flex-direction: row; flex-wrap: wrap; gap: 8px;
      max-height: 200px; padding-right: 0;
    }
    .dp-slot { flex: 1 0 calc(33.333% - 6px); padding: 9px 0; }
  }

  /* ============================================================
     Multi-page additions — plain nav link + secondary pages
     ============================================================ */

  /* Sign-in: quiet text link on the right of the nav */
  .nav-right .btn-signin { background: transparent; color: var(--text-secondary); padding: 0 8px; height: auto; }
  .nav-right .btn-signin:hover { color: var(--text-primary); background: transparent; }

  /* Plain (non-dropdown) nav item, styled to match .nav-trigger */
  .nav-links a.nav-link-plain {
    display: inline-flex; align-items: center;
    /* Reserve the same trailing width the dropdown items spend on their
       chevron (13px icon + 5px gap), so the three nav labels space evenly. */
    padding-right: 18px;
    font-size: 14px; font-weight: 500; color: var(--text-secondary);
    transition: color var(--duration-fast) var(--ease-standard);
  }
  .nav-links a.nav-link-plain:hover { color: var(--text-primary); }
  .nav-links a.nav-link-plain[aria-current="page"] { color: var(--text-primary); }

  /* Sign-up (auth) page — centered brand form. Reuses .demo-card / .field /
     .demo-success so it stays on the design system; only layout is added here. */
  .auth-main { display: flex; align-items: center; }
  .auth { width: 100%; padding: 80px 0 96px; }
  .auth-head { text-align: center; max-width: 30rem; margin: 0 auto 28px; padding: 0 20px; }
  .auth-head h1 { font-size: calc(var(--ts) * 38px); line-height: 1.1; letter-spacing: -0.02em; }
  .auth-head .auth-sub { margin: 14px auto 0; max-width: 38ch; font-size: 16px; line-height: 1.6; color: var(--text-secondary); }
  .auth-card { width: 100%; max-width: 440px; margin: 0 auto; }
  .auth-alt { margin: 20px 0 0; text-align: center; font-size: 14px; color: var(--text-secondary); }
  .auth-alt a { color: var(--iris-700); font-weight: 500; }
  .auth-alt a:hover { color: var(--action-primary); }
  .signup-success { padding-top: 8px; }

  /* Generic page header for secondary pages */
  #contact { scroll-margin-top: 96px; }
  .page-head { padding: 88px 0 8px; text-align: center; }
  .page-head h1 { margin: 0 auto; max-width: 18ch; font-size: calc(var(--ts) * 56px); line-height: 1.06; }
  .page-head p.page-sub { margin: 20px auto 0; max-width: 54ch; font-size: 18px; line-height: 1.62; color: var(--text-secondary); }

  /* Help Center category grid */
  .help { padding: 40px 0 var(--section); }
  .help-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 56px; }
  .help-card { display: block; background: var(--surface-card); border-radius: var(--radius-2xl); padding: 28px 26px; box-shadow: var(--shadow-card);
    transition: box-shadow var(--duration-base) var(--ease-standard), transform var(--duration-fast) var(--ease-standard); }
  .help-card:hover { box-shadow: var(--shadow-card-hover); transform: translateY(-2px); }
  .help-card:active { transform: translateY(0); }
  .help-card .help-ico { width: 42px; height: 42px; border-radius: 12px; background: var(--surface-sunken); color: var(--iris-600); display: inline-flex; align-items: center; justify-content: center; }
  .help-card .help-ico svg { width: 20px; height: 20px; }
  .help-card h3 { margin: 18px 0 0; font-family: var(--font-serif); font-weight: 400; letter-spacing: -0.018em; font-size: 21px; }
  .help-card p { margin: 10px 0 0; font-size: 14.5px; line-height: 1.6; color: var(--text-secondary); }

  /* About prose + Contact card */
  .about-prose { max-width: 720px; margin: 0 auto; padding: 36px 0 var(--section-sm); }
  .about-prose p { font-size: 18px; line-height: 1.72; color: var(--text-secondary); margin: 0 0 20px; }
  .about-prose h2 { font-family: var(--font-serif); font-weight: 400; letter-spacing: -0.018em; font-size: 30px; margin: 48px 0 16px; color: var(--text-primary); }
  .contact-card { max-width: 720px; margin: 0 auto var(--section); background: var(--surface-card); border-radius: var(--radius-2xl); padding: 44px 40px; box-shadow: var(--shadow-card); text-align: center; }
  .contact-card h2 { font-family: var(--font-serif); font-weight: 400; letter-spacing: -0.018em; font-size: 28px; }
  .contact-card p { margin: 14px auto 0; max-width: 46ch; font-size: 16px; line-height: 1.62; color: var(--text-secondary); }
  .contact-card a.contact-mail { display: inline-block; margin-top: 24px; font-family: var(--font-mono); font-size: 16px; color: var(--iris-700); }
  .contact-card a.contact-mail:hover { color: var(--iris-600); }

  /* Legal prose (privacy / terms) */
  .legal { max-width: 720px; margin: 0 auto; padding: 28px 0 var(--section); }
  .legal .legal-meta { font-size: 14px; color: var(--text-tertiary); margin-bottom: 28px; }
  .legal h2 { font-family: var(--font-serif); font-weight: 400; letter-spacing: -0.018em; font-size: 26px; margin: 40px 0 12px; }
  .legal h3 { font-size: 17px; font-weight: 600; margin: 24px 0 8px; color: var(--text-primary); }
  .legal p, .legal li { font-size: 15.5px; line-height: 1.72; color: var(--text-secondary); }
  .legal ul { margin: 12px 0; padding-left: 22px; }
  .legal li { margin: 6px 0; }
  .legal .notice { background: var(--surface-sunken); border-radius: var(--radius-md); padding: 16px 18px; font-size: 14px; line-height: 1.6; color: var(--text-secondary); margin: 24px 0; }

  /* Blog placeholder list */
  .blog { padding: 40px 0 var(--section); }
  .blog-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 56px; }
  .blog-card { background: var(--surface-card); border-radius: var(--radius-2xl); overflow: hidden; box-shadow: var(--shadow-card); display: flex; flex-direction: column; }
  .blog-card .blog-thumb { display: block; width: 100%; }
  .blog-card .blog-body { padding: 22px 24px 26px; }
  .blog-card .blog-tag { font-size: 12px; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; color: var(--iris-600); }
  .blog-card h3 { margin: 12px 0 0; font-family: var(--font-serif); font-weight: 400; letter-spacing: -0.018em; font-size: 20px; line-height: 1.22; }
  .blog-card p { margin: 10px 0 0; font-size: 14px; line-height: 1.6; color: var(--text-secondary); }
  .blog-empty { text-align: center; max-width: 48ch; margin: 36px auto 0; font-size: 16px; line-height: 1.62; color: var(--text-tertiary); }

  @media (max-width: 860px) {
    .help-grid, .blog-grid { grid-template-columns: 1fr; }
    .page-head { padding: 64px 0 8px; }
    .page-head h1 { font-size: calc(var(--ts) * 40px); }
    .auth { padding: 48px 0 64px; }
    .auth-head h1 { font-size: calc(var(--ts) * 32px); }
  }