/* EntroDB: #3BA234 brand green, graphite surfaces, and balanced proportions. */
:root {
  color-scheme: dark;
  --brand: #3ba234;
  --bg: #111613;
  --bg-top: #171d18;
  --bg-deep: #0d120e;
  --bg-soft: #243127;
  --surface: #1a231c;
  --surface-strong: #202c22;
  --surface-border: rgba(156, 179, 148, .14);
  --surface-border-strong: rgba(156, 179, 148, .26);
  --surface-soft: rgba(156, 179, 148, .045);
  --section-strong: transparent;
  --section-soft: transparent;
  --text: #f1f4ef;
  --muted: #a9b4a7;
  --muted-strong: #cdd6c9;
  --primary: #79bf70;
  --primary-deep: #a5d49a;
  --secondary: #7fa66f;
  --signal: #70b564;
  --accent-line: rgba(59, 162, 52, .4);
  --accent-soft: rgba(59, 162, 52, .085);
  --action-bg: #3ba234;
  --action-hover: #48b13f;
  --action-text: #081607;
  --headline-start: #f1f4ef;
  --headline-end: #8ac77c;
  --core-halo: #59a94d;
  --core-face-light: #365435;
  --core-face-dark: #1b2b1c;
  --core-top-light: #8eb780;
  --core-top-dark: #385c32;
  --core-line: #7ca96d;
  --core-ring: #66985a;
  --core-inset: #243e21;
  --core-mark: #d3eac7;
  --core-base: #18271a;
  --core-text: #b6cdaa;
  --core-text-muted: #91a184;
  --shadow: 0 16px 40px rgba(3, 12, 5, .15);
  --radius-xl: 16px;
  --radius-lg: 12px;
  --radius-md: 10px;
  --page-width: min(1480px, calc(100% - clamp(80px, 8vw, 160px)));
  --grid-line: rgba(156, 179, 148, .035);
}
html[data-theme="light"] {
  color-scheme: light;
  --bg: #f6f8f4;
  --bg-top: #fcfdfb;
  --bg-deep: #eef2ea;
  --bg-soft: #fff;
  --surface: #ffffff;
  --surface-strong: #fff;
  --surface-border: rgba(62, 91, 49, .13);
  --surface-border-strong: rgba(62, 91, 49, .25);
  --surface-soft: rgba(67, 112, 50, .04);
  --text: #202e1e;
  --muted: #61715a;
  --muted-strong: #41563b;
  --primary: #2b7826;
  --primary-deep: #286e24;
  --secondary: #557e42;
  --signal: #357a2e;
  --accent-line: rgba(59, 162, 52, .35);
  --accent-soft: rgba(59, 162, 52, .065);
  --action-bg: #3ba234;
  --action-hover: #48b13f;
  --action-text: #081607;
  --headline-start: #2c4825;
  --headline-end: #4c7937;
  --core-halo: #83b66e;
  --core-face-light: #a8c69a;
  --core-face-dark: #e1ebd9;
  --core-top-light: #79a965;
  --core-top-dark: #bad1a9;
  --core-line: #6d9660;
  --core-ring: #7e9f6b;
  --core-inset: #d6e5cb;
  --core-mark: #386a2d;
  --core-base: #dce8d2;
  --core-text: #4b6f3d;
  --core-text-muted: #5b7550;
  --shadow: 0 12px 35px rgba(35, 55, 28, .055);
  --grid-line: rgba(67, 112, 50, .035);
}
html { scroll-padding-top: 28px; }
body, html[data-theme="light"] body {
  background: linear-gradient(180deg, var(--bg-top), var(--bg) 24%, var(--bg-deep));
  font-family: "Outfit", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}
body::before {
  display: block;
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image: linear-gradient(var(--grid-line) 1px, transparent 1px), linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 96px 96px;
  mask-image: linear-gradient(#000, transparent 88%);
}
button, input, textarea { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { cursor: pointer; }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 5px; }
[hidden] { display: none !important; }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
::selection { background: var(--primary-deep); color: var(--bg); }
.skip-link { position: fixed; z-index: 100; left: 20px; top: -80px; background: var(--text); color: var(--bg); padding: 14px 20px; border-radius: 6px; }
.skip-link:focus { top: 16px; }
.page-shell { padding-top: 0; }
.site-header { min-height: 100px; padding: 18px 0; margin-bottom: 0; border-bottom: 1px solid var(--surface-border); gap: 24px; }
.brand-logo { width: 108px; filter: none; }
.site-nav { gap: 24px; }
.site-nav a { font-size: 13px; font-weight: 400; color: var(--muted); transition: color .2s; padding: 12px 0; white-space: nowrap; }
.site-nav a:hover { color: var(--text); }
.header-utility { gap: 12px; margin-left: 0; }
.button { border-radius: 6px; min-height: 48px; gap: 12px; padding: 0 22px; font-size: 14px; font-weight: 500; box-shadow: none; }
.button:hover { transform: translateY(-2px); }
.button-primary, .nav-button-highlight, html[data-theme="light"] .button-primary, html[data-theme="light"] .nav-button-highlight { background: var(--action-bg); border-color: var(--action-bg); color: var(--action-text); box-shadow: none; }
.button-primary:hover, .nav-button-highlight:hover, html[data-theme="light"] .button-primary:hover, html[data-theme="light"] .nav-button-highlight:hover { background: var(--action-hover); border-color: var(--action-hover); box-shadow: 0 4px 22px var(--accent-soft); }
.button-secondary, .button-ghost, html[data-theme="light"] .button-secondary, html[data-theme="light"] .button-ghost { background: transparent; border-color: var(--surface-border-strong); color: var(--text); }
.nav-button { margin-left: 4px; min-height: 40px; padding: 0 18px; font-size: 13px; }
.theme-toggle { min-height: 40px; padding: 0 12px; font-size: 12px; }
.rename-notice { padding: 18px 0; gap: 14px; grid-template-columns: auto 1fr; }
.rename-notice-badge { padding: 3px 7px; font-size: 10px; border: 1px solid var(--surface-border-strong); color: var(--muted-strong); letter-spacing: .12em; border-radius: 3px; background: transparent; }
.rename-notice-track { animation: none; width: auto; }
.rename-notice-text { font-size: 11px; font-weight: 400; color: var(--muted); letter-spacing: .035em; }
html[data-theme="light"] .rename-notice-text { color: var(--muted); }
.rename-notice-text[aria-hidden] { display: none; }
.rename-notice-marquee { mask-image: none; }
.hero { position: relative; isolation: isolate; grid-template-columns: 1fr 1.05fr; min-height: 580px; gap: 35px; padding: 20px 0 56px; }
.hero::before { content: ""; position: absolute; z-index: -1; inset: -70px -4.3% -1px; pointer-events: none; background: radial-gradient(ellipse at 78% 48%, var(--accent-soft), transparent 49%); mask-image: linear-gradient(transparent, #000 15%, #000 85%, transparent); }
.hero-copy { padding-top: 8px; }
.eyebrow { font-size: 11px; font-weight: 400; letter-spacing: .12em; gap: 10px; }
.eyebrow::before { display: none; }
.eyebrow-divider { color: var(--muted); opacity: .45; padding: 0 3px; }
.status-dot { width: 5px; height: 5px; border-radius: 50%; background: var(--signal); display: inline-block; flex: 0 0 auto; }
.hero h1 { font-size: clamp(38px, 4.05vw, 60px); font-weight: 500; line-height: 1.33; letter-spacing: -.035em; margin: 26px 0 22px; }
.hero h1 > span { background: linear-gradient(105deg, var(--headline-start), var(--headline-end)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-lead { font-size: 14px; line-height: 2; max-width: 490px; font-weight: 400; }
.hero-lead strong { font-weight: 500; color: var(--muted-strong); }
.hero-actions { gap: 12px; margin: 30px 0 24px; }
.hero-actions .button { min-height: 48px; }
.hero-actions svg { width: 15px; height: 15px; fill: none; stroke: currentColor; stroke-width: 1.2; }
.hero-tags { gap: 0; margin: 0 0 22px; }
.hero-tags span { background: none; border: 0; padding: 0 14px; border-radius: 0; font-size: 11px; color: var(--muted); border-right: 1px solid var(--surface-border-strong); }
.hero-tags span:first-child { padding-left: 0; }
.hero-tags span:last-child { border: 0; }
.hero-doc-link { display: inline-flex; align-items: center; gap: 16px; color: var(--muted); font-size: 11px; min-height: 34px; }
.hero-doc-link:hover { color: var(--primary); }
.security-core { position: relative; width: 100%; aspect-ratio: 1.16; min-width: 0; isolation: isolate; }
.core-caption, .core-footer { position: absolute; inset: 8px 0 auto; display: flex; justify-content: space-between; font: 9px/1.5 Consolas, monospace; letter-spacing: .12em; color: var(--muted); }
.core-coordinate { opacity: .55; }
.core-diagram { width: 100%; height: 100%; display: block; }
.core-grid { color: var(--primary); opacity: .13; stroke-width: .7; }
.core-orbit { transform-origin: 300px 250px; animation: core-orbit 80s linear infinite; }
.core-node { position: absolute; display: flex; align-items: center; gap: 11px; padding: 12px 15px; border: 1px solid var(--surface-border); border-radius: 5px; background: var(--bg); box-shadow: 0 8px 24px rgba(0, 0, 0, .08); }
.node-cross { font-size: 22px; font-weight: 300; color: var(--primary); }
.core-node div { display: grid; gap: 5px; }
.core-node small { font: 8px Consolas, monospace; color: var(--muted); letter-spacing: .13em; }
.core-node strong { font-size: 11px; font-weight: 400; color: var(--muted-strong); }
.core-node-business { left: 1%; top: 27%; }
.core-node-policy { right: 7%; top: 14%; }
.core-node-ai { right: 0; top: 59%; }
.core-node-data { left: 8%; bottom: 14%; }
.core-footer { inset: auto 0 0; font-size: 8px; border-top: 1px solid var(--surface-border); padding-top: 12px; }
.core-footer > span:first-child { display: inline-flex; align-items: center; gap: 7px; }
@keyframes core-orbit { to { transform: rotate(360deg); } }
.platform-principles { display: grid; grid-template-columns: repeat(4, 1fr); border-block: 1px solid var(--surface-border); padding: 28px 0; margin-bottom: 12px; }
.platform-principles > div { padding: 0 28px; border-left: 1px solid var(--surface-border); }
.platform-principles > div:first-child { padding-left: 0; border-left: 0; }
.platform-principles > div > span { display: block; font: 9px/1.5 Consolas, monospace; color: var(--muted); letter-spacing: .1em; margin-bottom: 12px; }
.platform-principles strong { display: block; font-size: 15px; font-weight: 500; }
.platform-principles p { font-size: 11px; color: var(--muted); margin: 7px 0 0; line-height: 1.6; }
.section { padding: 64px 0; }
#capabilities, #products, #sales, #scenarios, #architecture, #resources { padding: 64px 0; border: 0; border-top: 1px solid var(--surface-border); border-radius: 0; background: transparent; box-shadow: none; margin: 0; }
.section-heading { margin-bottom: 32px; }
.section-kicker { font: 10px/1.6 "Outfit", "Noto Sans SC", sans-serif; letter-spacing: .13em; font-weight: 400; gap: 10px; }
.section-kicker::before { width: 18px; }
.section-kicker > span { color: var(--muted); letter-spacing: .06em; }
.section-heading h2, .resource-panel h2 { font-size: clamp(24px, 2.4vw, 32px); font-weight: 500; letter-spacing: -.025em; line-height: 1.45; white-space: normal; margin: 12px 0; }
.section-heading p { font-size: 13px; }
.surface, html[data-theme="light"] .surface { background: linear-gradient(145deg, var(--surface), color-mix(in srgb, var(--surface) 88%, var(--bg))); border-color: var(--surface-border); box-shadow: 0 8px 30px rgba(4, 12, 4, .035); backdrop-filter: none; }
.feature-card, .scenario-card { position: relative; padding: 28px; min-height: 198px; transition: border-color .2s, background .2s; }
.feature-card:hover, .scenario-card:hover, .product-card:hover { border-color: var(--surface-border-strong); background: var(--bg-soft); transform: none; }
.feature-grid, .scenario-grid { gap: 14px; }
.card-icon, html[data-theme="light"] .card-icon { border: 1px solid var(--surface-border-strong); border-radius: 7px; background: var(--surface-soft); color: var(--primary); box-shadow: none; width: 36px; height: 36px; }
.card-icon svg { width: 18px; height: 18px; stroke-width: 1.4; }
.feature-index { color: var(--muted); font-size: 11px; }
.feature-card h3, .scenario-card h3 { font-size: 16px; font-weight: 500; }
.feature-card p, .scenario-card p, .product-card p, .arch-card p, .resource-panel p, .contact-panel p { font-size: 13px; line-height: 1.85; }
.product-card, .architecture-board, .resource-panel, .contact-panel, .sales-matrix { border-radius: 12px; }
.product-card-highlight { border-color: var(--surface-border-strong); }
.product-card-highlight::before { opacity: .15; }
.product-card-highlight::after { background: radial-gradient(circle, var(--accent-soft), transparent 70%); }
.product-tag-alt { color: var(--primary-deep); }
:is(.feature-card, .product-card, .scenario-card, .resource-link):hover .card-icon { background: var(--accent-soft); border-color: var(--surface-border-strong); }
.sales-table .is-highlight, html[data-theme="light"] .sales-table .is-highlight { background: var(--accent-soft); color: var(--muted-strong); }
.sales-table .is-free, html[data-theme="light"] .sales-table .is-free { background: var(--surface-soft); color: var(--muted-strong); }
.sales-table thead .is-highlight, html[data-theme="light"] .sales-table thead .is-highlight { color: var(--primary-deep); }
.sales-table thead .is-free, html[data-theme="light"] .sales-table thead .is-free { color: var(--muted-strong); }
.sales-yes { color: var(--signal); }
.sales-no { color: var(--muted); }
.arch-card, html[data-theme="light"] .arch-card { background: var(--surface-soft); border-color: var(--surface-border); border-radius: 10px; }
.band-tags span { border-radius: 4px; font-size: 11px; }
.resource-link { border-radius: 8px; }
.resource-link:hover, html[data-theme="light"] .resource-link:hover { background: var(--accent-soft); border-color: var(--surface-border-strong); }
.form-field input, .form-field textarea { background: var(--bg); border-color: var(--surface-border-strong); color: var(--text); }
.form-field input:focus, .form-field textarea:focus { border-color: var(--primary); }
.scroll-top-button { background: var(--surface-strong); border-color: var(--surface-border-strong); color: var(--muted-strong); }
.site-footer { padding-top: 32px; border-top: 1px solid var(--surface-border); }
.site-footer p, .footer-meta a { font-size: 11px; }
.reveal.is-visible { animation: fadeUp .55s ease both; }
.demo-section { padding-top: 70px; padding-bottom: 64px; }
.demo-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; margin-bottom: 28px; }
.demo-heading .section-kicker { margin: 0 0 12px; }
.demo-heading h2 { font-size: clamp(26px, 2.6vw, 36px); margin: 0; font-weight: 500; letter-spacing: -.03em; line-height: 1.5; }
.demo-heading > p { color: var(--muted); font-size: 12px; line-height: 1.9; margin: 0 0 4px; }
.demo-layout { display: grid; grid-template-columns: minmax(0, 1fr) 300px; border: 1px solid var(--surface-border-strong); border-radius: 10px; overflow: hidden; background: var(--surface); }
.demo-player { position: relative; aspect-ratio: 16/9; min-width: 0; background: #101811; isolation: isolate; }
.demo-player video { width: 100%; height: 100%; display: block; object-fit: contain; background: #101811; }
.demo-player video::cue { color: #f1f4ef; background: rgba(8, 15, 8, .86); font-size: 16px; }
.demo-cover { position: absolute; inset: 0; display: flex; flex-direction: column; justify-content: space-between; align-items: stretch; padding: 26px 28px; width: 100%; color: #f1f4ef; text-align: left; border: 0; background: linear-gradient(180deg, rgba(8, 15, 8, .78), rgba(8, 15, 8, .2) 35%, rgba(8, 15, 8, .2) 60%, rgba(8, 15, 8, .96)), var(--demo-poster, url("assets/videos/entrodb-query-poster.jpg")) center / 132% auto; }
.demo-cover-top { display: flex; justify-content: space-between; gap: 12px; color: #c2d1ba; font: 9px/1.5 Consolas, "Microsoft YaHei", monospace; letter-spacing: .08em; }
.demo-play-circle { display: grid; place-items: center; align-self: center; width: 68px; height: 68px; border-radius: 50%; border: 1px solid rgba(122, 183, 105, .6); background: rgba(35, 62, 29, .65); color: #d4e9c9; backdrop-filter: blur(8px); box-shadow: 0 0 0 12px rgba(122, 183, 105, .035); transition: transform .2s, background .2s; }
.demo-play-circle svg { width: 24px; height: 24px; fill: currentColor; transform: translateX(2px); }
.demo-cover:hover .demo-play-circle { transform: scale(1.08); background: rgba(54, 86, 43, .85); }
.demo-cover-bottom { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; }
.demo-cover-bottom > span:first-child { display: grid; gap: 9px; }
.demo-cover-bottom strong { font-size: clamp(15px, 1.5vw, 21px); font-weight: 400; }
.demo-cover-bottom > span > span { font-size: 10px; color: #c2d1ba; letter-spacing: .06em; }
.demo-watch { font-size: 10px; white-space: nowrap; }
.demo-watch > span { margin-left: 12px; }
.demo-player.is-playing .demo-cover { display: none; }
.demo-sidebar { padding: 24px; display: flex; flex-direction: column; border-left: 1px solid var(--surface-border); }
.demo-chapter-label { font-size: 11px; color: var(--muted-strong); margin: 0 0 17px; display: flex; justify-content: space-between; gap: 8px; }
.demo-chapter-label > span { color: var(--muted); font: 8px/1.7 Consolas, monospace; }
.demo-chapter { position: relative; display: flex; gap: 12px; width: 100%; padding: 18px 0; border: 0; border-bottom: 1px solid var(--surface-border); background: transparent; color: var(--muted); text-align: left; }
.chapter-number { font: 12px/1.6 Consolas, monospace; padding-top: 1px; color: var(--muted); }
.demo-chapter > span:nth-child(2) { display: grid; gap: 7px; }
.demo-chapter strong { font-size: 12px; color: var(--muted-strong); font-weight: 400; }
.demo-chapter > span > span { font-size: 10px; line-height: 1.7; }
.demo-chapter small { font: 9px/1.5 Consolas, monospace; }
.chapter-arrow { margin-left: auto; font-size: 13px; opacity: 0; }
.demo-chapter.is-active strong, .demo-chapter.is-active .chapter-number { color: var(--primary-deep); }
.demo-chapter.is-active .chapter-arrow, .demo-chapter:hover .chapter-arrow { opacity: 1; }
.demo-chapter.is-active::before { content: ""; position: absolute; width: 2px; height: 24px; background: var(--primary); left: -24px; top: 18px; }
.demo-consult { margin-top: auto; padding: 21px 0 0; border: 0; background: none; text-align: left; color: var(--muted); font-size: 10px; line-height: 1.6; }
.demo-consult > span { display: flex; justify-content: space-between; margin-top: 8px; color: var(--primary-deep); font-size: 11px; }
.demo-disclaimer { display: flex; align-items: baseline; gap: 8px; color: var(--muted); font-size: 10px; line-height: 1.8; margin: 15px 0 0; }
.demo-error { position: absolute; inset: 0; z-index: 2; padding: 24px; background: var(--surface); display: flex; gap: 12px; flex-wrap: wrap; align-content: center; justify-content: center; color: var(--text); text-align: center; }
.demo-error strong, .demo-error p { width: 100%; }
.demo-error p { font-size: 13px; color: var(--muted); }
html[data-theme="light"] .security-core { background: radial-gradient(ellipse, var(--accent-soft), transparent 68%); }
html[data-theme="light"] .core-grid { opacity: .23; }
html[data-theme="light"] .core-caption, html[data-theme="light"] .core-footer { color: var(--muted); }
html[data-theme="light"] .site-nav { background: transparent; }
/* A capped composition keeps large displays generous without stretching reading lines. */
@media (min-width: 1200px) {
  .site-header { min-height: 96px; gap: 28px; }
  .brand-logo { width: 118px; }
  .site-nav { gap: clamp(20px, 1.5vw, 28px); }
  .site-nav a { font-size: 14px; }
  .header-utility { margin-left: 12px; }
  .nav-button { min-height: 44px; font-size: 14px; padding-inline: 24px; }
  .theme-toggle { min-height: 44px; padding-inline: 16px; font-size: 13px; }
  .rename-notice { padding-block: 20px; }
  .rename-notice-text { font-size: 12px; }
  .hero { grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: clamp(36px, 3.3vw, 64px); min-height: clamp(580px, calc(100svh - 320px), 720px); padding: 32px 0 64px; }
  .hero-copy { padding-top: 0; padding-bottom: 12px; }
  .eyebrow { font-size: 12px; letter-spacing: .14em; gap: 12px; }
  .hero h1 { font-size: clamp(48px, 3.7vw, 68px); font-weight: 500; line-height: 1.35; letter-spacing: -.035em; margin: 32px 0 24px; }
  .hero-lead { font-size: 16px; line-height: 2; max-width: 600px; }
  .hero-actions { gap: 16px; margin: 38px 0 28px; }
  .hero-actions .button { min-height: 52px; padding-inline: 26px; font-size: 14px; gap: 16px; }
  .hero-actions .button-primary { min-width: 180px; }
  .hero-tags { margin-bottom: 24px; }
  .hero-tags span { font-size: 12px; padding-inline: 18px; }
  .hero-doc-link { min-height: 40px; font-size: 12px; gap: 24px; }
  .security-core { align-self: center; }
  .security-core::before { content: ""; position: absolute; z-index: -1; inset: 10% -5% 6%; background: radial-gradient(ellipse, var(--accent-soft), transparent 65%); pointer-events: none; }
  .core-grid { opacity: .19; }
  .core-caption { font-size: 10px; inset-inline: 0; letter-spacing: .16em; }
  .core-footer { padding-top: 18px; font-size: 10px; letter-spacing: .11em; }
  .core-node { gap: 14px; padding: 16px 20px; border-radius: 7px; background: color-mix(in srgb, var(--bg) 94%, transparent); }
  .core-node div { gap: 7px; }
  .core-node small { font-size: 9px; }
  .core-node strong { font-size: 13px; }
  .node-cross { font-size: 27px; }
  .platform-principles { padding: 30px 0; margin-bottom: 0; }
  .platform-principles > div { padding-inline: 36px; }
  .platform-principles > div > span { font-size: 10px; margin-bottom: 15px; }
  .platform-principles strong { font-size: 17px; }
  .platform-principles p { font-size: 13px; margin-top: 10px; }
  .demo-section, #capabilities, #products, #sales, #scenarios, #architecture, #resources { padding-block: 88px; }
  .section-heading { display: grid; grid-template-columns: minmax(0, 1fr) minmax(280px, .7fr); align-items: end; column-gap: 64px; width: 100%; max-width: none; margin: 0 0 44px; text-align: left; }
  .section-heading .section-kicker { grid-column: 1 / -1; margin: 0 0 14px; justify-self: start; }
  .section-heading h2 { margin: 0; font-size: clamp(28px, 2vw, 36px); line-height: 1.45; }
  .section-heading > p:last-child { justify-self: end; margin: 0 0 5px; max-width: 470px; font-size: 14px; line-height: 1.9; }
  .section-kicker { font-size: 12px; letter-spacing: .18em; }
  .section-kicker::before { width: 24px; }
  .feature-grid, .scenario-grid, .product-grid { gap: 20px; }
  .feature-card, .scenario-card { padding: 32px; min-height: 232px; }
  .card-topline { margin-bottom: 28px; }
  .card-icon, html[data-theme="light"] .card-icon { width: 44px; height: 44px; border-radius: 9px; }
  .card-icon svg { width: 22px; height: 22px; }
  .feature-index { font-size: 12px; }
  .feature-card h3, .scenario-card h3 { font-size: 20px; margin-bottom: 13px; }
  .feature-card p, .scenario-card p, .product-card p, .arch-card p, .resource-panel p, .contact-panel p { font-size: 15px; line-height: 1.9; }
  .product-card { padding: 40px; }
  .product-card h3 { font-size: 26px; }
  .demo-heading { margin-bottom: 40px; }
  .demo-heading .section-kicker { margin-bottom: 18px; }
  .demo-heading h2 { font-size: clamp(30px, 2.3vw, 42px); }
  .demo-heading > p { font-size: 15px; line-height: 1.9; }
  .demo-layout { grid-template-columns: minmax(0, 1fr) 330px; border-radius: 14px; }
  .demo-player { aspect-ratio: 16 / 9; }
  .demo-cover { padding: 34px 38px; }
  .demo-cover-top { font-size: 11px; }
  .demo-play-circle { width: 80px; height: 80px; box-shadow: 0 0 0 14px rgba(122, 183, 105, .035), 0 0 60px rgba(76, 142, 56, .07); }
  .demo-play-circle svg { width: 30px; height: 30px; }
  .demo-cover-bottom strong { font-size: clamp(20px, 1.4vw, 30px); }
  .demo-cover-bottom > span > span { font-size: 12px; }
  .demo-cover-bottom > span:first-child { gap: 14px; }
  .demo-watch { font-size: 12px; }
  .demo-sidebar { padding: 30px; }
  .demo-chapter-label { font-size: 13px; margin-bottom: 22px; }
  .demo-chapter-label > span { font-size: 10px; }
  .demo-chapter { gap: 16px; padding: 20px 0; }
  .demo-chapter.is-active::before { left: -30px; top: 20px; height: 32px; }
  .chapter-number { font-size: 14px; }
  .demo-chapter > span:nth-child(2) { gap: 10px; }
  .demo-chapter strong { font-size: 15px; }
  .demo-chapter > span > span { font-size: 12px; }
  .demo-chapter small { font-size: 11px; }
  .chapter-arrow { font-size: 16px; }
  .demo-consult { font-size: 12px; padding-top: 24px; }
  .demo-consult > span { font-size: 14px; margin-top: 12px; }
  .demo-disclaimer { font-size: 12px; gap: 10px; margin-top: 20px; }
  .architecture-board { padding: 28px; gap: 24px; }
  .arch-card { padding: 26px; }
  .arch-card h3 { font-size: 20px; }
  .resource-layout { gap: 28px; }
  .resource-panel, .contact-panel { padding: 40px; }
  .resource-panel h2 { font-size: clamp(28px, 2vw, 40px); }
  .site-footer { padding-top: 44px; padding-bottom: 20px; gap: 60px; }
  .site-footer p, .footer-meta a { font-size: 13px; }
}
@media (max-width: 1100px) {
  .site-nav { gap: 16px; }
  .site-header { gap: 18px; }
  .site-nav a { font-size: 12px; }
  .hero { gap: 20px; min-height: 530px; grid-template-columns: 1fr 1fr; }
  .demo-layout { grid-template-columns: minmax(0, 1fr) 270px; }
  .demo-sidebar { padding: 20px; }
  .demo-chapter.is-active::before { left: -20px; }
  .demo-chapter { padding: 13px 0; gap: 9px; }
  .demo-player { aspect-ratio: auto; min-height: 350px; }
  .demo-chapter-label { margin-bottom: 10px; }
}
@media (max-width: 960px) {
  :root { --page-width: calc(100% - 48px); }
  .site-header { min-height: 84px; }
  .site-nav { position: absolute; left: 0; right: 0; top: calc(100% + 8px); display: grid; padding: 20px; background: var(--surface-strong); border: 1px solid var(--surface-border-strong); border-radius: 8px; opacity: 0; visibility: hidden; pointer-events: none; transform: translateY(-8px); box-shadow: var(--shadow); gap: 3px; }
  .site-header.nav-open .site-nav { visibility: visible; opacity: 1; pointer-events: auto; transform: translateY(0); }
  html[data-theme="light"] .site-nav { background: var(--surface-strong); }
  .site-nav a { padding: 12px; font-size: 14px; }
  .site-nav .nav-button { margin: 8px 0 0; }
  .nav-toggle { display: inline-flex; border-radius: 6px; width: 40px; height: 40px; background: var(--surface-soft); }
  .header-utility { margin-left: auto; }
  .hero { grid-template-columns: 1fr 1fr; min-height: 470px; gap: 8px; }
  .hero::before { inset-inline: -20px; }
  .hero h1 { font-size: 39px; }
  .hero-lead { font-size: 12px; }
  .hero-tags span { font-size: 10px; padding-inline: 9px; }
  .core-node { gap: 7px; padding: 10px; }
  .core-node strong { font-size: 10px; }
  .core-node small { font-size: 7px; }
  .core-caption, .core-footer { font-size: 7px; letter-spacing: .04em; }
  .core-coordinate { display: none; }
  .platform-principles > div { padding-inline: 18px; }
  .platform-principles strong { font-size: 14px; }
  .platform-principles p { font-size: 10px; }
  .demo-layout { grid-template-columns: 1fr; }
  .demo-player { aspect-ratio: 16/9; min-height: 0; }
  .demo-sidebar { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); column-gap: 20px; padding: 20px; border-top: 1px solid var(--surface-border); border-left: 0; }
  .demo-chapter-label { grid-column: 1 / -1; }
  .demo-chapter { border-bottom: 0; }
  .demo-chapter.is-active::before { left: -8px; }
  .demo-chapter strong { font-size: 11px; }
  .demo-chapter > span > span { font-size: 9px; }
  .demo-consult { grid-column: 1 / -1; padding-top: 14px; border-top: 1px solid var(--surface-border); display: flex; align-items: center; justify-content: space-between; }
  .demo-consult > span { margin: 0; gap: 28px; }
}
@media (max-width: 640px) {
  :root { --page-width: calc(100% - 40px); }
  .page-shell { padding-top: 0; }
  .site-header { min-height: 76px; padding: 16px 0; }
  .brand-logo { width: 94px; }
  .theme-toggle { min-height: 40px; padding: 0 10px; }
  .header-utility { gap: 8px; }
  .rename-notice { padding: 16px 0; gap: 10px; }
  .rename-notice-text { font-size: 10px; }
  .rename-notice-marquee { overflow: hidden; mask-image: linear-gradient(90deg, #000 92%, transparent); }
  .hero { grid-template-columns: 1fr; gap: 24px; padding: 25px 0 30px; }
  .hero-copy { padding: 0; }
  .eyebrow { font-size: 10px; }
  .hero h1 { font-size: clamp(33px, 8.7vw, 48px); line-height: 1.4; margin: 23px 0 18px; }
  .hero-lead { font-size: 13px; line-height: 1.95; }
  .desktop-break { display: none; }
  .hero-actions { margin: 25px 0 20px; }
  .hero-actions .button { font-size: 12px; padding-inline: 17px; min-height: 46px; }
  .hero-tags { margin-bottom: 12px; }
  .hero-tags span { font-size: 10px; padding-inline: 12px; }
  .hero-doc-link { font-size: 10px; }
  .security-core { margin-top: 12px; max-width: 460px; justify-self: center; }
  .core-node { padding: 9px 10px; }
  .core-node-policy { top: 17%; }
  .core-node small { font-size: 7px; }
  .core-node strong { font-size: 10px; }
  .core-caption { font-size: 8px; }
  .platform-principles { grid-template-columns: repeat(2, 1fr); row-gap: 24px; padding: 26px 0; }
  .platform-principles > div { padding: 0 0 0 18px; }
  .platform-principles > div:nth-child(odd) { border-left: 0; padding-left: 0; }
  .platform-principles > div > span { font-size: 8px; margin-bottom: 8px; }
  .platform-principles strong { font-size: 13px; }
  .platform-principles p { font-size: 10px; }
  .demo-section, #capabilities, #products, #sales, #scenarios, #architecture, #resources { padding: 42px 0; }
  .demo-heading { display: block; margin-bottom: 22px; }
  .demo-heading .section-kicker { font-size: 9px; }
  .demo-heading h2 { font-size: 27px; }
  .demo-heading > p { font-size: 11px; margin-top: 12px; }
  .demo-heading > p br { display: none; }
  .demo-player { aspect-ratio: 16/9; }
  .demo-cover { padding: 16px; }
  .demo-cover-top { font-size: 7px; letter-spacing: .02em; }
  .demo-play-circle { width: 48px; height: 48px; box-shadow: 0 0 0 8px rgba(122, 183, 105, .035); }
  .demo-play-circle svg { width: 18px; height: 18px; }
  .demo-cover-bottom strong { font-size: 13px; }
  .demo-cover-bottom > span > span { font-size: 8px; }
  .demo-watch { display: none; }
  .demo-sidebar { display: flex; padding: 20px; gap: 0; }
  .demo-chapter { padding: 15px 0; gap: 12px; border-bottom: 1px solid var(--surface-border); }
  .demo-chapter-label { font-size: 11px; }
  .demo-chapter strong { font-size: 12px; }
  .demo-chapter > span > span { font-size: 10px; }
  .demo-chapter small { font-size: 9px; }
  .demo-chapter.is-active::before { left: -20px; }
  .chapter-arrow { opacity: 1; }
  .demo-consult { display: block; border-top: 0; padding-top: 20px; }
  .demo-consult > span { margin-top: 7px; }
  .demo-disclaimer { font-size: 9px; line-height: 1.9; }
  .section-heading { text-align: left; margin-bottom: 24px; }
  .section-heading p { font-size: 12px; }
  .section-heading h2, .resource-panel h2 { font-size: 24px; }
  .feature-card, .scenario-card { padding: 24px; min-height: auto; }
  .site-footer { gap: 24px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}