:root {
  color-scheme: light;
  --bg: #f5f5f7;
  --bg-elevated: rgba(255, 255, 255, 0.8);
  --surface: #ffffff;
  --surface-2: #ececf0;
  --text: #151518;
  --muted: #6e6e73;
  --line: rgba(21, 21, 24, 0.1);
  --line-strong: rgba(21, 21, 24, 0.17);
  --accent: #3a70e4;
  --accent-2: #3a70e4;
  --accent-soft: rgba(58, 112, 228, 0.11);
  --good: #16845b;
  --warn: #a86408;
  --shadow: 0 14px 38px rgba(29, 31, 47, 0.08);
  --header: rgba(245, 245, 247, 0.78);
  --code: #0d0d10;
  --code-text: #f5f5f7;
  --max: 1180px;
  --reading: 760px;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #000000;
  --bg-elevated: rgba(20, 20, 23, 0.8);
  --surface: #111114;
  --surface-2: #1b1b1f;
  --text: #f5f5f7;
  --muted: #a1a1a7;
  --line: rgba(255, 255, 255, 0.1);
  --line-strong: rgba(255, 255, 255, 0.18);
  --accent: #3a70e4;
  --accent-2: #3a70e4;
  --accent-soft: rgba(58, 112, 228, 0.16);
  --good: #4bd39c;
  --warn: #f0a647;
  --shadow: 0 28px 90px rgba(0, 0, 0, 0.5);
  --header: rgba(0, 0, 0, 0.72);
  --code: #111114;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button { color: inherit; }
::selection { background: rgba(58, 112, 228, 0.28); }

.skip-link {
  position: fixed;
  z-index: 100;
  top: 10px;
  left: 10px;
  padding: 10px 14px;
  border-radius: 10px;
  background: var(--text);
  color: var(--bg);
  transform: translateY(-160%);
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: sticky;
  z-index: 50;
  top: 0;
  border-bottom: 1px solid var(--line);
  background: var(--header);
  -webkit-backdrop-filter: saturate(180%) blur(22px);
  backdrop-filter: saturate(180%) blur(22px);
}
.header-inner {
  width: min(calc(100% - 40px), var(--max));
  height: 64px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 30px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 720;
  letter-spacing: -0.04em;
}
.brand-mark {
  width: 42px;
  height: 34px;
  flex: 0 0 auto;
}
.brand-mark img { width: 100%; height: 100%; object-fit: contain; }
.primary-nav { display: flex; align-items: center; gap: 4px; }
.primary-nav a,
.mobile-nav a {
  padding: 9px 12px;
  border-radius: 10px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 560;
}
.primary-nav a:hover,
.primary-nav a[aria-current="page"],
.mobile-nav a:not(.button):hover { background: var(--surface-2); color: var(--text); }
.header-actions { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.icon-button,
.menu-toggle {
  width: 38px;
  height: 38px;
  border: 0;
  border-radius: 50%;
  background: transparent;
  display: grid;
  place-items: center;
  cursor: pointer;
}
.icon-button:hover,
.menu-toggle:hover { background: var(--surface-2); }
.theme-sun,
.theme-moon { width: 17px; height: 17px; fill: none; stroke: currentColor; stroke-width: 1.8; }
:root[data-theme="light"] .theme-sun { display: none; }
:root[data-theme="dark"] .theme-moon { display: none; }
.menu-toggle { display: none; position: relative; }
.menu-toggle span { position: absolute; width: 17px; height: 1.5px; border-radius: 2px; background: currentColor; transition: transform .2s ease; }
.menu-toggle span:first-child { transform: translateY(-3px); }
.menu-toggle span:last-child { transform: translateY(3px); }
.menu-toggle[aria-expanded="true"] span:first-child { transform: rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:last-child { transform: rotate(-45deg); }
.mobile-nav { display: none; }
.button {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 19px;
  border: 1px solid transparent;
  border-radius: 999px;
  background: var(--text);
  color: var(--bg);
  font-size: 15px;
  font-weight: 650;
  transition: transform .18s ease, opacity .18s ease, border-color .18s ease;
}
.button:hover { transform: translateY(-1px); opacity: .88; }
.button:active { transform: translateY(0); }
.button-accent { background: var(--accent); color: #fff; }
.button-quiet { border-color: var(--line-strong); background: transparent; color: var(--text); }
.button-small { min-height: 36px; padding-inline: 15px; font-size: 14px; }
.text-link { color: var(--accent); font-weight: 620; }
.text-link:hover { text-decoration: underline; text-underline-offset: 3px; }

.shell { width: min(calc(100% - 40px), var(--max)); margin: 0 auto; }
.section { padding: 110px 0; }
.section-tight { padding: 76px 0; }
.eyebrow {
  margin: 0 0 14px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 750;
  letter-spacing: .08em;
  text-transform: uppercase;
}
h1, h2, h3, p { text-wrap: pretty; }
h1, h2, h3 { margin: 0; letter-spacing: -0.045em; }
h1 { font-size: clamp(54px, 8vw, 104px); line-height: .95; font-weight: 760; }
h2 { font-size: clamp(40px, 5.8vw, 70px); line-height: 1.01; font-weight: 740; }
h3 { font-size: 24px; line-height: 1.1; font-weight: 680; }
.lede { margin: 24px 0 0; max-width: 690px; color: var(--muted); font-size: clamp(19px, 2.3vw, 25px); line-height: 1.5; }
.gradient-text { color: inherit; }

.home-hero { padding: 142px 0 126px; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.12fr) minmax(290px, .58fr); gap: clamp(60px, 8vw, 120px); align-items: end; }
.hero-copy { max-width: 780px; }
.hero-copy h1 { max-width: 780px; font-size: clamp(62px, 7.2vw, 104px); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.hero-note { margin: 18px 0 0; color: var(--muted); font-size: 13px; }
.hero-guide-link { min-height: 44px; display: inline-flex; align-items: center; padding: 0 10px; }
.hero-start { width: 100%; max-width: 360px; justify-self: end; padding-bottom: 10px; }
.hero-start-label { margin: 0 0 12px; color: var(--muted); font-size: 12px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.hero-start a { display: grid; grid-template-columns: 1fr auto; gap: 18px; align-items: center; padding: 18px 0; border-top: 1px solid var(--line); }
.hero-start a:last-of-type { border-bottom: 1px solid var(--line); }
.hero-start-copy small { display: block; margin-bottom: 4px; color: var(--muted); font-size: 12px; }
.hero-start-copy strong { display: block; font-size: 17px; letter-spacing: -.02em; transition: color .18s ease; }
.hero-start-arrow { color: var(--muted); font-size: 18px; transition: color .18s ease, transform .18s ease; }
.hero-start a:hover .hero-start-copy strong, .hero-start a:hover .hero-start-arrow { color: var(--accent); }
.hero-start a:hover .hero-start-arrow { transform: translateX(2px); }
.hero-start-note { margin: 14px 0 0; color: var(--muted); font-size: 12px; }

.trust-row { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.trust-grid { display: grid; grid-template-columns: repeat(3, 1fr); }
.trust-grid div { padding: 30px; border-right: 1px solid var(--line); }
.trust-grid div:last-child { border-right: 0; }
.trust-grid strong { display: block; font-size: 19px; letter-spacing: -.02em; }
.trust-grid span { display: block; margin-top: 7px; color: var(--muted); font-size: 14px; line-height: 1.45; }

.section-heading { max-width: 780px; margin-bottom: 50px; }
.section-heading p:last-child { margin: 18px 0 0; color: var(--muted); font-size: 20px; line-height: 1.5; }
.platform-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 18px; }
.platform-card {
  min-height: 330px;
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--surface);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.platform-card:nth-child(1), .platform-card:nth-child(2) { grid-column: span 6; }
.platform-card:nth-child(n+3) { grid-column: span 4; min-height: 280px; }
.platform-card h3 { margin-top: 66px; }
.platform-card p { max-width: 430px; margin: 12px 0 0; color: var(--muted); line-height: 1.55; }
.platform-card .platform-label { margin: 0; color: var(--muted); font-size: 13px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; }
.platform-card .card-link { align-self: flex-end; margin-top: auto; padding-top: 28px; color: var(--accent); font-weight: 650; }

.runtime-band {
  background: #030306;
  color: #f5f5f7;
  position: relative;
  overflow: hidden;
}
.runtime-band::before { display: none; }
.runtime-grid { display: grid; grid-template-columns: .82fr 1.18fr; gap: 90px; align-items: center; position: relative; }
.runtime-copy .eyebrow { color: var(--accent); }
.runtime-copy .lede { color: #a8a8b0; }
.runtime-copy .hero-actions { margin-top: 28px; }
.runtime-copy .button-quiet { border-color: rgba(255,255,255,.22); color: #fff; }
.runtime-diagram {
  padding: 30px;
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 20px;
  background: #101014;
  box-shadow: none;
}
.runtime-label { margin: 0 0 22px; color: #8e8e96; font-size: 12px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.runtime-flow { display: grid; grid-template-columns: 1fr 36px 1fr 36px 1fr; align-items: center; gap: 10px; }
.runtime-node { min-height: 118px; padding: 18px; border: 1px solid rgba(255,255,255,.12); border-radius: 20px; background: #101014; }
.runtime-node small { color: #888891; text-transform: uppercase; letter-spacing: .07em; }
.runtime-node strong { display: block; margin-top: 12px; font-size: 19px; }
.runtime-node span { display: block; margin-top: 6px; color: #a8a8b0; font-size: 13px; line-height: 1.4; }
.runtime-arrow { color: var(--accent); text-align: center; font-size: 22px; }
.privacy-pill { margin-top: 18px; padding: 14px 16px; border: 1px solid rgba(255,255,255,.1); border-radius: 12px; background: #151519; color: #aaaab2; font-size: 13px; line-height: 1.45; }

.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; counter-reset: steps; }
.step { counter-increment: steps; padding: 30px; border-top: 1px solid var(--line-strong); }
.step::before { content: "0" counter(steps); display: block; margin-bottom: 48px; color: var(--accent); font-size: 13px; font-weight: 700; }
.step p { color: var(--muted); line-height: 1.55; }

.support-chat-section { border-top: 1px solid var(--line); }
.support-chat-layout { max-width: 980px; }
.support-chat-heading { max-width: 760px; }
.support-chat-heading h2 { max-width: 740px; }
.support-chat-heading p:not(.eyebrow) { max-width: 720px; margin: 18px 0 0; color: var(--muted); font-size: 19px; line-height: 1.55; }
.support-chat-shell { overflow: hidden; margin-top: 34px; border: 1px solid var(--line); border-radius: 20px; background: var(--surface); box-shadow: var(--shadow); }
.support-chat-frame { display: block; width: 100%; height: 560px; border: 0; background: var(--surface); }
.support-chat-fallback { margin: 13px 2px 0; color: var(--muted); font-size: 13px; line-height: 1.55; }
.support-chat-fallback a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }

.page-hero { padding: 90px 0 64px; border-bottom: 1px solid var(--line); }
.page-hero h1 { max-width: 900px; font-size: clamp(50px, 7vw, 82px); }
.page-hero .lede { max-width: 760px; }
.status-note {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  max-width: 840px;
  margin-top: 30px;
  padding: 18px 20px;
  border: 1px solid color-mix(in srgb, var(--warn) 35%, transparent);
  border-radius: 16px;
  background: color-mix(in srgb, var(--warn) 10%, transparent);
  color: var(--text);
  line-height: 1.5;
}
.status-dot { flex: 0 0 9px; height: 9px; margin-top: 7px; border-radius: 50%; background: var(--warn); }
.status-note strong { display: block; margin-bottom: 3px; }

.support-search-wrap { position: relative; margin-top: 34px; max-width: 720px; }
.support-search {
  width: 100%;
  height: 58px;
  padding: 0 22px 0 52px;
  border: 1px solid var(--line-strong);
  border-radius: 18px;
  outline: none;
  background: var(--surface);
  color: var(--text);
  font-size: 17px;
  box-shadow: 0 12px 30px rgba(0,0,0,.05);
}
.support-search:focus { border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft); }
.search-icon { position: absolute; left: 20px; top: 19px; width: 19px; height: 19px; fill: none; stroke: var(--muted); stroke-width: 2; pointer-events: none; }
.support-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.support-card {
  min-height: 220px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--surface);
  position: relative;
}
.support-card:hover { border-color: var(--line-strong); transform: translateY(-2px); transition: .18s ease; }
.support-card small { color: var(--accent); font-weight: 700; text-transform: uppercase; letter-spacing: .07em; }
.support-card h3 { margin-top: 32px; }
.support-card p { margin: 10px 0 40px; color: var(--muted); line-height: 1.5; }
.support-card .arrow { position: absolute; right: 26px; bottom: 24px; color: var(--accent); font-size: 20px; }
.support-empty { padding: 50px 0; color: var(--muted); text-align: center; }
.support-contact-section { background: var(--surface); }
.contact-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.contact-card { min-height: 286px; display: flex; flex-direction: column; padding: 30px; border: 1px solid var(--line); border-radius: 24px; background: var(--bg); }
.contact-card:hover { border-color: var(--line-strong); }
.contact-card small { color: var(--accent); font-weight: 700; text-transform: uppercase; letter-spacing: .07em; }
.contact-card h3 { margin: 42px 0 10px; font-size: 28px; letter-spacing: -.035em; overflow-wrap: anywhere; }
.contact-card p { margin: 0 0 28px; color: var(--muted); line-height: 1.6; }
.contact-card > span { margin-top: auto; color: var(--accent); font-weight: 680; }
.report-guide { display: grid; grid-template-columns: .85fr 1.15fr; gap: 60px; margin-top: 72px; padding-top: 34px; border-top: 1px solid var(--line-strong); }
.report-guide h3 { margin: 0; font-size: clamp(28px, 4vw, 42px); line-height: 1.06; letter-spacing: -.045em; }
.report-guide .check-list { margin: 0; }
.privacy-note { margin-top: 56px; padding: 24px 26px; border-left: 3px solid var(--accent); background: var(--accent-soft); }
.privacy-note p { margin: 8px 0 0; color: var(--muted); line-height: 1.65; }
.privacy-note a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.faq-list { max-width: 880px; border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { padding: 22px 36px 22px 0; cursor: pointer; list-style: none; font-size: 18px; font-weight: 620; position: relative; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; position: absolute; right: 5px; top: 19px; color: var(--muted); font-size: 24px; font-weight: 350; }
.faq-list details[open] summary::after { content: "−"; }
.faq-list details p { max-width: 760px; margin: -4px 0 24px; color: var(--muted); line-height: 1.65; }

.legal-layout { display: grid; grid-template-columns: 230px minmax(0, var(--reading)); gap: 72px; align-items: start; padding: 68px 0 110px; }
.legal-nav { position: sticky; top: 92px; }
.legal-nav p { margin: 0 0 10px; color: var(--muted); font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; }
.legal-nav a { display: block; padding: 9px 11px; margin-left: -11px; border-radius: 9px; color: var(--muted); font-size: 14px; }
.legal-nav a:hover { color: var(--text); background: var(--surface-2); }
.legal-article { min-width: 0; }
.legal-article section { padding: 0 0 58px; margin-bottom: 58px; border-bottom: 1px solid var(--line); scroll-margin-top: 90px; }
.legal-article section:last-child { border-bottom: 0; margin-bottom: 0; }
.legal-article h2 { margin-bottom: 18px; font-size: clamp(29px, 4.5vw, 42px); }
.legal-article p, .legal-article li { color: var(--muted); font-size: 17px; line-height: 1.7; }
.legal-article strong { color: var(--text); }
.legal-article a:not(.button) { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.legal-article ul { margin: 0; padding-left: 23px; }
.legal-article li + li { margin-top: 18px; }
.legal-article .hero-actions { margin-top: 30px; }
.legal-updated { margin: 18px 0 0; color: var(--muted); font: 12px/1.5 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.legal-table-wrap { overflow-x: auto; margin-top: 24px; border: 1px solid var(--line); border-radius: 18px; background: var(--surface); }
.legal-table { width: 100%; min-width: 680px; border-collapse: collapse; text-align: left; }
.legal-table th, .legal-table td { padding: 15px 17px; border-bottom: 1px solid var(--line); vertical-align: top; font-size: 14px; line-height: 1.55; }
.legal-table tr:last-child td { border-bottom: 0; }
.legal-table th { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .06em; }
.legal-table td { color: var(--muted); }
.legal-table td:first-child { color: var(--text); font-weight: 620; }

.guide-layout { display: grid; grid-template-columns: 230px minmax(0, var(--reading)); gap: 72px; align-items: start; padding: 68px 0 110px; }
.guide-nav { position: sticky; top: 92px; }
.guide-nav p { margin: 0 0 10px; color: var(--muted); font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; }
.guide-nav a { display: block; padding: 9px 11px; margin-left: -11px; border-radius: 9px; color: var(--muted); font-size: 14px; }
.guide-nav a:hover, .guide-nav a[aria-current="location"] { color: var(--text); background: var(--surface-2); }
.guide-nav .nav-gap { margin-top: 26px; }
.guide-article { min-width: 0; }
.guide-article section { padding: 0 0 58px; margin-bottom: 58px; border-bottom: 1px solid var(--line); scroll-margin-top: 90px; }
.guide-article section:last-child { border-bottom: 0; margin-bottom: 0; }
.guide-article h2 { font-size: clamp(31px, 5vw, 46px); margin-bottom: 20px; }
.guide-article h3 { margin: 30px 0 10px; font-size: 22px; }
.guide-article p, .guide-article li { color: var(--muted); font-size: 17px; line-height: 1.7; }
.guide-article strong { color: var(--text); }
.guide-article ol, .guide-article ul { padding-left: 23px; }
.guide-article li + li { margin-top: 9px; }
.guide-article a:not(.button) { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.callout {
  margin: 24px 0;
  padding: 20px 22px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: 0 16px 16px 0;
  background: var(--accent-soft);
}
.callout p { margin: 0; font-size: 15px; }
.callout-warn { border-left-color: var(--warn); background: color-mix(in srgb, var(--warn) 10%, transparent); }
.check-list { list-style: none; padding-left: 0 !important; }
.check-list li { position: relative; padding-left: 30px; }
.check-list li::before { content: "✓"; position: absolute; left: 0; color: var(--good); font-weight: 800; }
.numbered-cards { display: grid; gap: 12px; counter-reset: guide-steps; margin: 24px 0; }
.numbered-card { counter-increment: guide-steps; display: grid; grid-template-columns: 38px 1fr; gap: 14px; padding: 20px; border: 1px solid var(--line); border-radius: 18px; background: var(--surface); }
.numbered-card::before { content: counter(guide-steps); width: 34px; height: 34px; display: grid; place-items: center; border-radius: 50%; background: var(--accent-soft); color: var(--accent); font-weight: 750; }
.numbered-card h3 { margin: 3px 0 5px; font-size: 18px; letter-spacing: -.02em; }
.numbered-card p { margin: 0; font-size: 15px; }
.code-block { margin: 18px 0; border: 1px solid rgba(255,255,255,.09); border-radius: 16px; background: var(--code); color: var(--code-text); overflow: hidden; }
.code-head { display: flex; align-items: center; gap: 10px; min-height: 44px; padding: 0 12px 0 17px; border-bottom: 1px solid rgba(255,255,255,.09); color: #97979f; font-size: 12px; }
.copy-button { margin-left: auto; padding: 6px 10px; border: 0; border-radius: 8px; background: rgba(255,255,255,.08); color: #e6e6e9; cursor: pointer; font-size: 12px; }
.copy-button:hover, .copy-button.is-copied { background: rgba(58,112,228,.28); color: #fff; }
.code-block pre { margin: 0; padding: 18px; overflow-x: auto; }
.code-block code { font: 13px/1.65 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; white-space: pre; }
.tabs { margin: 24px 0; }
.tab-list { display: inline-flex; gap: 3px; padding: 4px; border-radius: 12px; background: var(--surface-2); }
.tab-list button { padding: 8px 14px; border: 0; border-radius: 9px; background: transparent; color: var(--muted); cursor: pointer; font-size: 14px; font-weight: 620; }
.tab-list button.is-active { background: var(--surface); color: var(--text); box-shadow: 0 2px 8px rgba(0,0,0,.08); }
.tab-panel { padding-top: 4px; }

.capability-table-wrap { overflow-x: auto; margin: 28px 0; border: 1px solid var(--line); border-radius: 18px; background: var(--surface); }
.capability-table { width: 100%; min-width: 690px; border-collapse: collapse; text-align: left; }
.capability-table th, .capability-table td { padding: 15px 17px; border-bottom: 1px solid var(--line); font-size: 14px; }
.capability-table tr:last-child td { border-bottom: 0; }
.capability-table th { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .06em; }
.capability-table td:first-child { color: var(--text); font-weight: 620; }
.yes { color: var(--good); font-weight: 700; }
.preview { color: var(--warn); font-weight: 700; }
.dash { color: var(--muted); }

.home-help-grid { display: grid; grid-template-columns: repeat(2, 1fr); border: 1px solid var(--line); border-radius: 24px; background: var(--surface); overflow: hidden; }
.home-help-card { min-height: 310px; display: flex; flex-direction: column; padding: 38px; }
.home-help-card + .home-help-card { border-left: 1px solid var(--line); }
.home-help-card:hover { background: var(--surface-2); }
.home-help-card h2 { max-width: 460px; margin: 12px 0 14px; font-size: clamp(34px, 4.5vw, 56px); line-height: 1; letter-spacing: -.055em; }
.home-help-card > p:not(.eyebrow) { max-width: 470px; margin: 0 0 34px; color: var(--muted); line-height: 1.6; }
.home-help-card > span { margin-top: auto; color: var(--accent); font-weight: 680; }

.site-footer { padding: 54px 0 34px; border-top: 1px solid var(--line); }
.footer-grid { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 42px; }
.footer-brand p { max-width: 300px; color: var(--muted); line-height: 1.55; }
.footer-column strong { display: block; margin-bottom: 13px; font-size: 13px; }
.footer-column a { display: block; width: fit-content; margin: 9px 0; color: var(--muted); font-size: 14px; }
.footer-column a:hover { color: var(--text); }
.footer-bottom { display: flex; justify-content: space-between; gap: 18px; margin-top: 48px; padding-top: 22px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; }

@media (max-width: 960px) {
  .primary-nav, .header-actions > .button { display: none; }
  .menu-toggle { display: grid; }
  .mobile-nav {
    position: absolute;
    top: calc(100% + 8px);
    left: 14px;
    right: 14px;
    width: auto;
    margin: 0;
    padding: 12px;
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
    border: 1px solid var(--line);
    border-radius: 20px;
    background: rgba(255, 255, 255, .96);
    box-shadow: 0 24px 70px rgba(0, 0, 0, .16);
    -webkit-backdrop-filter: blur(24px);
    backdrop-filter: blur(24px);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity .24s ease, visibility .24s ease, transform .24s ease;
  }
  .mobile-nav.is-open { opacity: 1; visibility: visible; transform: none; }
  .mobile-nav a { padding: 14px 13px; border-radius: 12px; color: var(--text); font-size: 16px; font-weight: 630; letter-spacing: -.02em; }
  .mobile-nav .button { min-height: 46px; margin-top: 8px; color: #fff; }
  :root[data-theme="dark"] .mobile-nav { background: rgba(17, 17, 20, .96); box-shadow: 0 24px 70px rgba(0, 0, 0, .55); }
  .hero-grid { display: block; }
  .hero-start { max-width: none; margin-top: 64px; }
  .platform-card:nth-child(n) { grid-column: span 6; }
  .runtime-grid { grid-template-columns: 1fr; gap: 48px; }
  .support-grid { grid-template-columns: repeat(2, 1fr); }
  .report-guide { grid-template-columns: 1fr; gap: 30px; }
  .guide-layout { grid-template-columns: 1fr; gap: 30px; }
  .legal-layout { grid-template-columns: 1fr; gap: 30px; }
  .legal-nav { position: static; display: flex; gap: 6px; overflow-x: auto; padding-bottom: 8px; }
  .legal-nav p { display: none; }
  .legal-nav a { flex: 0 0 auto; margin: 0; background: var(--surface-2); }
  .guide-nav { position: static; display: flex; gap: 6px; overflow-x: auto; padding-bottom: 8px; }
  .guide-nav p, .guide-nav .nav-gap { display: none; }
  .guide-nav a { flex: 0 0 auto; margin: 0; background: var(--surface-2); }
  .footer-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 680px) {
  .header-inner, .shell { width: min(calc(100% - 28px), var(--max)); }
  .header-inner { height: 58px; }
  .brand { font-size: 18px; }
  .brand-mark { width: 38px; height: 31px; }
  .home-hero { padding: 88px 0 76px; }
  .hero-start { margin-top: 48px; }
  .hero-start a { padding: 15px 0; }
  h1 { font-size: clamp(48px, 16vw, 68px); }
  h2 { font-size: clamp(36px, 12vw, 50px); }
  .lede { font-size: 19px; }
  .section { padding: 78px 0; }
  .section-tight { padding: 56px 0; }
  .trust-grid { grid-template-columns: 1fr; }
  .trust-grid div { border-right: 0; border-bottom: 1px solid var(--line); padding: 22px 0; }
  .trust-grid div:last-child { border-bottom: 0; }
  .platform-grid { display: block; }
  .platform-card { min-height: 270px !important; margin-bottom: 14px; padding: 25px; border-radius: 24px; }
  .platform-card h3 { margin-top: 40px; }
  .runtime-flow { grid-template-columns: 1fr; }
  .runtime-arrow { transform: rotate(90deg); }
  .runtime-diagram { padding: 18px; border-radius: 23px; }
  .steps { grid-template-columns: 1fr; }
  .step { padding-inline: 0; }
  .step::before { margin-bottom: 24px; }
  .support-chat-frame { height: 620px; }
  .page-hero { padding: 64px 0 48px; }
  .support-grid { grid-template-columns: 1fr; }
  .contact-grid, .home-help-grid { grid-template-columns: 1fr; }
  .home-help-card + .home-help-card { border-left: 0; border-top: 1px solid var(--line); }
  .support-card { min-height: 190px; }
  .guide-layout { padding-top: 36px; }
  .legal-layout { padding-top: 36px; }
  .guide-article section { padding-bottom: 42px; margin-bottom: 42px; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 30px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
}