/*
 * 好学加速器 / Haoxue Accelerator
 * Static website stylesheet v1.0.1
 * No remote fonts, CSS frameworks, or third-party assets.
 */
:root {
  --bg: #eef7ef;
  --bg-soft: #e2efe4;
  --surface: #fbfefb;
  --surface-strong: #ffffff;
  --ink: #1f2b23;
  --ink-soft: #536159;
  --ink-faint: #657369;
  --line: #ceddcf;
  --line-strong: #b8cbbb;
  --accent: #437d56;
  --accent-dark: #2f6845;
  --accent-soft: #d9ebde;
  --sage: #718b76;
  --sage-soft: #e4efe6;
  --charcoal: #203229;
  --success: #3b7650;
  --warning: #6f7c45;
  --shadow-sm: 0 8px 24px rgba(31, 52, 37, .07);
  --shadow-md: 0 24px 70px rgba(31, 52, 37, .11);
  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 30px;
  --radius-pill: 999px;
  --container: 1180px;
  --header-height: 76px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.72;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}
body.menu-open { overflow: hidden; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
button { color: inherit; }
h1, h2, h3, h4, p, ul, ol, dl, blockquote { margin-top: 0; }
h1, h2, h3, h4 { line-height: 1.18; letter-spacing: -.028em; }
h1 { font-size: clamp(2.45rem, 6vw, 4.75rem); }
h2 { font-size: clamp(2rem, 4.2vw, 3.35rem); }
h3 { font-size: clamp(1.18rem, 2.2vw, 1.5rem); }
p { color: var(--ink-soft); }
::selection { background: var(--accent-soft); color: var(--ink); }

.skip-link {
  position: fixed;
  z-index: 999;
  left: 16px;
  top: -80px;
  padding: 10px 16px;
  border-radius: 10px;
  background: var(--charcoal);
  color: white;
  transition: top .2s ease;
}
.skip-link:focus { top: 12px; }

.container { width: min(var(--container), calc(100% - 48px)); margin-inline: auto; }
.narrow { width: min(820px, calc(100% - 48px)); margin-inline: auto; }
.section { padding: 112px 0; }
.section--compact { padding: 76px 0; }
.section--surface { background: var(--surface); }
.section--soft { background: var(--bg-soft); }
.section--dark { background: var(--charcoal); color: white; }
.section--dark p { color: rgba(255,255,255,.68); }
.section-anchor { scroll-margin-top: calc(var(--header-height) + 28px); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  color: var(--accent-dark);
  font-size: .78rem;
  font-weight: 760;
  letter-spacing: .14em;
  text-transform: uppercase;
}
.eyebrow::before { content: ""; width: 28px; height: 1px; background: currentColor; }
.eyebrow--on-dark { color: #a9d8b6; }
.section-head { max-width: 760px; margin-bottom: 52px; }
.section-head--center { margin-inline: auto; text-align: center; }
.section-head--center .eyebrow::before { display: none; }
.section-head h2 { margin-bottom: 18px; }
.section-head p { max-width: 660px; margin-bottom: 0; font-size: 1.04rem; }
.section-head--center p { margin-inline: auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  border-bottom: 1px solid rgba(184, 203, 187, .76);
  background: rgba(238, 247, 239, .90);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}
.header-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 12px; flex: 0 0 auto; font-weight: 780; letter-spacing: -.02em; }
.brand img { width: 38px; height: 38px; }
.brand-name { white-space: nowrap; }
.site-nav { display: flex; align-items: center; gap: 30px; }
.site-nav a { position: relative; color: var(--ink-soft); font-size: .94rem; font-weight: 650; }
.site-nav a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: -8px; height: 2px; background: var(--accent); transition: right .22s ease; }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--ink); }
.site-nav a:hover::after, .site-nav a[aria-current="page"]::after { right: 0; }
.header-actions { display: flex; align-items: center; gap: 10px; }
.lang-link { display: inline-flex; min-width: 48px; height: 42px; align-items: center; justify-content: center; border: 1px solid var(--line); border-radius: var(--radius-pill); color: var(--ink-soft); font-size: .86rem; font-weight: 700; }
.lang-link:hover { border-color: var(--line-strong); background: var(--surface); color: var(--ink); }
.menu-toggle { display: none; width: 44px; height: 44px; padding: 0; border: 1px solid var(--line); border-radius: 50%; background: var(--surface); align-items: center; justify-content: center; cursor: pointer; }
.menu-toggle-lines, .menu-toggle-lines::before, .menu-toggle-lines::after { display: block; width: 18px; height: 1.5px; background: var(--ink); transition: transform .22s ease, opacity .22s ease; }
.menu-toggle-lines { position: relative; }
.menu-toggle-lines::before, .menu-toggle-lines::after { content: ""; position: absolute; left: 0; }
.menu-toggle-lines::before { top: -6px; }
.menu-toggle-lines::after { top: 6px; }
.menu-toggle[aria-expanded="true"] .menu-toggle-lines { background: transparent; }
.menu-toggle[aria-expanded="true"] .menu-toggle-lines::before { transform: translateY(6px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] .menu-toggle-lines::after { transform: translateY(-6px) rotate(-45deg); }

.btn {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 12px 22px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-weight: 740;
  line-height: 1.2;
  cursor: pointer;
  transition: transform .18s ease, background .18s ease, border-color .18s ease, box-shadow .18s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn:focus-visible, .lang-link:focus-visible, .menu-toggle:focus-visible, .faq-question:focus-visible, a:focus-visible { outline: 3px solid rgba(79, 143, 100, .30); outline-offset: 3px; }
.btn--dark { background: var(--charcoal); color: white; box-shadow: 0 14px 26px rgba(32, 50, 41, .18); }
.btn--dark:hover { background: #14251b; }
.btn--accent { background: var(--accent); color: white; box-shadow: 0 14px 28px rgba(79, 143, 100, .22); }
.btn--accent:hover { background: var(--accent-dark); }
.btn--line { border-color: var(--line-strong); background: transparent; color: var(--ink); }
.btn--line:hover { background: var(--surface); }
.btn--light { background: white; color: var(--ink); }
.btn--ghost-light { border-color: rgba(255,255,255,.42); color: white; }
.btn--ghost-light:hover { background: rgba(255,255,255,.08); }
.btn--spaced { margin-top: 26px; }
.inline-text-link { color: var(--accent-dark); text-decoration: underline; text-underline-offset: 3px; }
.btn--sm { min-height: 42px; padding: 10px 17px; font-size: .9rem; }
.btn[aria-disabled="true"], .btn.is-disabled { opacity: .55; cursor: not-allowed; box-shadow: none; transform: none; }
.icon-arrow { width: 17px; height: 17px; }

.hero { position: relative; overflow: hidden; padding: 84px 0 92px; }
.hero::before { content: ""; position: absolute; width: 540px; height: 540px; right: -160px; top: -220px; border-radius: 50%; background: radial-gradient(circle, rgba(79,143,100,.16), rgba(79,143,100,0) 70%); pointer-events: none; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.03fr) minmax(420px, .97fr); gap: 64px; align-items: center; }
.hero-copy h1 { max-width: 760px; margin-bottom: 24px; }
.hero-copy h1 em { color: var(--accent); font-style: normal; }
.hero-copy .lead { max-width: 620px; margin-bottom: 30px; font-size: clamp(1.05rem, 2vw, 1.25rem); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 22px; }
.hero-actions--center { justify-content: center; }
.hero-note { display: flex; align-items: flex-start; gap: 10px; max-width: 610px; color: var(--ink-faint); font-size: .86rem; }
.hero-note svg { flex: 0 0 auto; margin-top: 5px; }
.hero-visual { position: relative; }
.hero-visual::before { content: ""; position: absolute; inset: 8% 0 -4% 8%; z-index: -1; border-radius: 42% 58% 48% 52%; background: var(--accent-soft); transform: rotate(-3deg); }
.hero-visual img { width: 100%; filter: drop-shadow(0 30px 45px rgba(30, 62, 41, .13)); }
.hero-chips { display: flex; flex-wrap: wrap; gap: 9px; margin-bottom: 24px; }
.chip { display: inline-flex; align-items: center; gap: 8px; padding: 8px 12px; border: 1px solid var(--line); border-radius: var(--radius-pill); background: rgba(255,255,255,.55); color: var(--ink-soft); font-size: .82rem; font-weight: 650; }
.chip-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--sage); }

.trust-bar { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: rgba(255,255,255,.32); }
.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.trust-item { display: flex; gap: 14px; align-items: center; padding: 25px 24px; border-right: 1px solid var(--line); }
.trust-item:last-child { border-right: 0; }
.trust-icon { display: grid; width: 38px; height: 38px; place-items: center; flex: 0 0 auto; border-radius: 12px; background: var(--surface); border: 1px solid var(--line); color: var(--accent-dark); }
.trust-item strong { display: block; margin-bottom: 2px; font-size: .93rem; }
.trust-item span { display: block; color: var(--ink-faint); font-size: .78rem; line-height: 1.4; }

.cards { display: grid; gap: 22px; }
.cards--3 { grid-template-columns: repeat(3, 1fr); }
.cards--4 { grid-template-columns: repeat(4, 1fr); }
.card { position: relative; overflow: hidden; min-height: 100%; padding: 30px; border: 1px solid var(--line); border-radius: var(--radius-md); background: var(--surface); box-shadow: var(--shadow-sm); }
.card::after { content: ""; position: absolute; width: 140px; height: 140px; right: -80px; bottom: -90px; border-radius: 50%; background: var(--accent-soft); opacity: 0; transition: opacity .22s ease, transform .22s ease; }
.card:hover::after { opacity: .6; transform: scale(1.15); }
.card-icon { display: grid; width: 48px; height: 48px; place-items: center; margin-bottom: 26px; border-radius: 15px; background: var(--bg-soft); color: var(--accent-dark); }
.card h3 { margin-bottom: 12px; }
.card p { margin-bottom: 0; font-size: .94rem; }
.card-kicker { display: block; margin-bottom: 10px; color: var(--accent-dark); font-size: .75rem; font-weight: 760; letter-spacing: .09em; text-transform: uppercase; }

.split { display: grid; grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr); gap: 82px; align-items: center; }
.split--reverse .split-visual { order: 2; }
.split-visual { position: relative; }
.split-visual img { width: 100%; border-radius: var(--radius-lg); }
.split-copy h2 { margin-bottom: 20px; }
.split-copy > p { margin-bottom: 28px; }
.check-list { display: grid; gap: 14px; padding: 0; margin: 0; list-style: none; }
.check-list li { display: flex; gap: 12px; align-items: flex-start; color: var(--ink-soft); }
.check-list svg { flex: 0 0 auto; margin-top: 5px; color: var(--success); }
.inline-link { display: inline-flex; align-items: center; gap: 7px; margin-top: 26px; color: var(--accent-dark); font-weight: 740; }
.inline-link:hover { text-decoration: underline; text-underline-offset: 4px; }

.privacy-panel { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(360px, .9fr); gap: 58px; align-items: center; padding: 54px; border-radius: var(--radius-lg); background: var(--charcoal); color: white; box-shadow: var(--shadow-md); }
.privacy-panel p { color: rgba(255,255,255,.68); }
.privacy-points { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.privacy-point { padding: 17px; border: 1px solid rgba(255,255,255,.12); border-radius: 16px; background: rgba(255,255,255,.04); }
.privacy-point strong { display: block; margin-bottom: 4px; font-size: .92rem; }
.privacy-point span { color: rgba(255,255,255,.58); font-size: .78rem; }
.privacy-visual img { max-height: 340px; margin-inline: auto; }

.platform-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.platform-card { padding: 26px; border: 1px solid var(--line); border-radius: var(--radius-md); background: var(--surface); }
.platform-card img { width: 48px; height: 48px; margin-bottom: 24px; }
.platform-card h3 { margin-bottom: 8px; }
.platform-card p { min-height: 48px; margin-bottom: 20px; font-size: .88rem; }
.platform-meta { display: block; margin-bottom: 18px; color: var(--ink-faint); font-size: .78rem; }
.platform-card .btn { width: 100%; }

.faq-list { border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-question { display: flex; width: 100%; justify-content: space-between; gap: 24px; align-items: center; padding: 25px 0; border: 0; background: transparent; text-align: left; cursor: pointer; font-weight: 750; }
.faq-question svg { flex: 0 0 auto; transition: transform .22s ease; }
.faq-item.is-open .faq-question svg { transform: rotate(45deg); }
.faq-answer { display: grid; grid-template-rows: 0fr; transition: grid-template-rows .24s ease; }
.faq-answer > div { overflow: hidden; }
.faq-answer p { max-width: 820px; padding: 0 0 0; margin-bottom: 0; }
.faq-item.is-open .faq-answer { grid-template-rows: 1fr; }
.faq-item.is-open .faq-answer p { padding-bottom: 25px; }

.cta-panel { position: relative; overflow: hidden; display: grid; grid-template-columns: 1fr auto; gap: 40px; align-items: center; padding: 58px; border-radius: var(--radius-lg); background: var(--accent); color: white; }
.cta-panel::after { content: ""; position: absolute; width: 340px; height: 340px; right: -160px; top: -160px; border: 1px solid rgba(255,255,255,.18); border-radius: 50%; box-shadow: 0 0 0 36px rgba(255,255,255,.05), 0 0 0 76px rgba(255,255,255,.035); }
.cta-panel h2 { max-width: 680px; margin-bottom: 14px; }
.cta-panel p { max-width: 650px; margin-bottom: 0; color: rgba(255,255,255,.78); }
.cta-actions { position: relative; z-index: 1; display: flex; gap: 10px; flex-wrap: wrap; justify-content: flex-end; }

.page-hero { padding: 78px 0 64px; border-bottom: 1px solid var(--line); }
.page-hero-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(300px, .48fr); gap: 56px; align-items: end; }
.page-hero h1 { margin-bottom: 22px; font-size: clamp(2.6rem, 6vw, 4.6rem); }
.page-hero p { max-width: 720px; margin-bottom: 0; font-size: 1.08rem; }
.page-hero-aside { padding: 24px; border: 1px solid var(--line); border-radius: var(--radius-md); background: var(--surface); }
.page-hero-aside dt { margin-bottom: 4px; color: var(--ink-faint); font-size: .75rem; font-weight: 720; text-transform: uppercase; letter-spacing: .08em; }
.page-hero-aside dd { margin: 0 0 16px; overflow-wrap: anywhere; font-weight: 680; }
.page-hero-aside dd:last-child { margin-bottom: 0; }

.value-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.value-card { padding: 34px; border-left: 3px solid var(--accent); background: var(--surface); border-radius: 0 var(--radius-md) var(--radius-md) 0; box-shadow: var(--shadow-sm); }
.value-card h3 { margin-bottom: 10px; }
.value-card p { margin-bottom: 0; }

.process-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; counter-reset: steps; }
.process-step { counter-increment: steps; padding: 30px; border: 1px solid var(--line); border-radius: var(--radius-md); background: var(--surface); }
.process-step::before { content: "0" counter(steps); display: block; margin-bottom: 30px; color: var(--accent); font-weight: 820; letter-spacing: .04em; }
.process-step h3 { margin-bottom: 10px; }
.process-step p { margin-bottom: 0; font-size: .92rem; }

.download-hero-art { display: grid; place-items: center; min-height: 260px; border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--surface); }
.download-hero-art img { max-height: 240px; }
.download-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.download-card { display: grid; grid-template-columns: auto 1fr; gap: 24px; padding: 30px; border: 1px solid var(--line); border-radius: var(--radius-md); background: var(--surface); }
.download-card > img { width: 54px; height: 54px; }
.download-card h2 { margin-bottom: 8px; font-size: 1.42rem; }
.download-card p { margin-bottom: 16px; font-size: .9rem; }
.download-card-actions { display: flex; flex-wrap: wrap; gap: 9px; }
.download-note { margin-top: 26px; padding: 18px 20px; border-left: 3px solid var(--warning); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; background: #eef5e7; color: #536542; font-size: .88rem; }
.toast { position: fixed; z-index: 200; left: 50%; bottom: 30px; transform: translate(-50%, 30px); max-width: calc(100% - 32px); padding: 12px 18px; border-radius: var(--radius-pill); background: var(--charcoal); color: white; opacity: 0; pointer-events: none; transition: opacity .2s ease, transform .2s ease; box-shadow: var(--shadow-md); }
.toast.is-visible { opacity: 1; transform: translate(-50%, 0); }

.legal-layout { display: grid; grid-template-columns: 240px minmax(0, 1fr); gap: 58px; align-items: start; }
.legal-nav { position: sticky; top: calc(var(--header-height) + 24px); padding: 22px; border: 1px solid var(--line); border-radius: var(--radius-md); background: var(--surface); }
.legal-nav strong { display: block; margin-bottom: 14px; font-size: .86rem; }
.legal-nav a { display: block; padding: 6px 0; color: var(--ink-soft); font-size: .82rem; }
.legal-nav a:hover { color: var(--accent-dark); }
.legal-content { padding: 48px; border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--surface); box-shadow: var(--shadow-sm); }
.legal-title { margin-bottom: 10px; font-size: clamp(2.3rem, 5vw, 3.7rem); }
.legal-meta { margin-bottom: 34px; color: var(--ink-faint); font-size: .84rem; }
.legal-summary { margin-bottom: 38px; padding: 22px; border-radius: var(--radius-md); background: var(--sage-soft); }
.legal-summary p:last-child { margin-bottom: 0; }
.legal-content section { padding-top: 30px; margin-top: 30px; border-top: 1px solid var(--line); scroll-margin-top: calc(var(--header-height) + 28px); }
.legal-content section:first-of-type { padding-top: 0; margin-top: 0; border-top: 0; }
.legal-content h2 { margin-bottom: 16px; font-size: 1.6rem; }
.legal-content h3 { margin: 24px 0 10px; font-size: 1.08rem; letter-spacing: -.01em; }
.legal-content p, .legal-content li { font-size: .95rem; }
.legal-content li { margin-bottom: 8px; color: var(--ink-soft); }
.legal-content a { color: var(--accent-dark); text-decoration: underline; text-underline-offset: 3px; }
.legal-table-wrap { overflow-x: auto; margin: 22px 0; border: 1px solid var(--line); border-radius: 14px; }
.legal-table { width: 100%; min-width: 760px; border-collapse: collapse; background: white; }
.legal-table th, .legal-table td { padding: 14px 15px; border-bottom: 1px solid var(--line); border-right: 1px solid var(--line); text-align: left; vertical-align: top; font-size: .82rem; }
.legal-table th:last-child, .legal-table td:last-child { border-right: 0; }
.legal-table tr:last-child td { border-bottom: 0; }
.legal-table th { background: var(--bg-soft); color: var(--ink); font-weight: 760; }
.legal-callout { margin: 24px 0; padding: 20px; border: 1px solid #c5dec9; border-radius: var(--radius-sm); background: #eff8f0; }
.legal-callout strong { color: var(--accent-dark); }

.contact-card { display: grid; grid-template-columns: 1fr auto; gap: 30px; align-items: center; padding: 38px; border: 1px solid var(--line); border-radius: var(--radius-md); background: var(--surface); }
.contact-card p { margin-bottom: 0; }
.contact-actions { display: flex; gap: 10px; flex-wrap: wrap; }

.site-footer { padding: 72px 0 28px; background: #182a20; color: white; }
.footer-grid { display: grid; grid-template-columns: minmax(280px, 1.35fr) repeat(3, minmax(130px, .55fr)); gap: 52px; }
.footer-brand p { max-width: 410px; margin-top: 18px; color: rgba(255,255,255,.58); font-size: .88rem; }
.footer-brand .brand { color: white; }
.footer-col h3 { margin-bottom: 18px; color: rgba(255,255,255,.92); font-size: .82rem; letter-spacing: .08em; text-transform: uppercase; }
.footer-col a { display: block; margin-bottom: 10px; color: rgba(255,255,255,.58); font-size: .87rem; }
.footer-col a:hover { color: white; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; margin-top: 54px; padding-top: 24px; border-top: 1px solid rgba(255,255,255,.1); color: rgba(255,255,255,.42); font-size: .78rem; }
.footer-bottom span:last-child { text-align: right; }

.not-found { min-height: calc(100vh - var(--header-height)); display: grid; place-items: center; padding: 70px 0; text-align: center; }
.not-found-code { margin-bottom: 16px; color: var(--accent); font-size: clamp(5rem, 18vw, 10rem); font-weight: 850; line-height: .85; }
.not-found h1 { margin-bottom: 16px; font-size: clamp(2rem, 5vw, 3.2rem); }
.not-found p { max-width: 620px; margin: 0 auto 26px; }

.reveal { opacity: 0; transform: translateY(18px); transition: opacity .65s ease, transform .65s ease; }
.reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
  .reveal { opacity: 1; transform: none; }
}

@media (max-width: 1040px) {
  .site-nav { gap: 20px; }
  .header-actions .btn { display: none; }
  .hero-grid { grid-template-columns: 1fr 420px; gap: 38px; }
  .trust-grid { grid-template-columns: repeat(2, 1fr); }
  .trust-item:nth-child(2) { border-right: 0; }
  .trust-item:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .cards--4, .platform-grid { grid-template-columns: repeat(2, 1fr); }
  .privacy-panel { grid-template-columns: 1fr .7fr; padding: 44px; }
  .footer-grid { grid-template-columns: 1.25fr repeat(3, .55fr); gap: 32px; }
}

@media (max-width: 860px) {
  :root { --header-height: 68px; }
  .container, .narrow { width: min(100% - 36px, var(--container)); }
  .section { padding: 84px 0; }
  .section--compact { padding: 58px 0; }
  .menu-toggle { display: inline-flex; }
  .site-nav { position: fixed; inset: var(--header-height) 0 auto 0; display: grid; gap: 0; padding: 14px 18px 24px; border-bottom: 1px solid var(--line); background: var(--bg); box-shadow: var(--shadow-md); opacity: 0; transform: translateY(-14px); pointer-events: none; transition: opacity .2s ease, transform .2s ease; }
  .site-nav.is-open { opacity: 1; transform: none; pointer-events: auto; }
  .site-nav a { padding: 14px 10px; border-bottom: 1px solid var(--line); }
  .site-nav a:last-child { border-bottom: 0; }
  .site-nav a::after { display: none; }
  .hero { padding: 62px 0 72px; }
  .hero-grid, .page-hero-grid, .split, .privacy-panel, .legal-layout { grid-template-columns: 1fr; }
  .hero-visual { max-width: 620px; margin-inline: auto; }
  .split { gap: 44px; }
  .split--reverse .split-visual { order: initial; }
  .privacy-panel { gap: 34px; }
  .privacy-visual { max-width: 340px; margin-inline: auto; }
  .cards--3, .process-grid { grid-template-columns: repeat(2, 1fr); }
  .cta-panel { grid-template-columns: 1fr; padding: 44px; }
  .cta-actions { justify-content: flex-start; }
  .page-hero { padding: 62px 0 50px; }
  .legal-nav { position: static; display: none; }
  .legal-content { padding: 36px; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
  .container, .narrow { width: min(100% - 28px, var(--container)); }
  body { font-size: 15px; }
  .brand-name { font-size: .96rem; }
  .brand img { width: 34px; height: 34px; }
  .lang-link { min-width: 42px; height: 40px; }
  .hero h1 { font-size: clamp(2.35rem, 12vw, 3.35rem); }
  .hero-grid { gap: 46px; }
  .hero-actions .btn { width: 100%; }
  .trust-grid, .cards--3, .cards--4, .platform-grid, .value-grid, .process-grid, .download-grid, .privacy-points { grid-template-columns: 1fr; }
  .trust-item { border-right: 0; border-bottom: 1px solid var(--line); }
  .trust-item:nth-child(3) { border-bottom: 1px solid var(--line); }
  .trust-item:last-child { border-bottom: 0; }
  .card { padding: 24px; }
  .privacy-panel, .cta-panel { padding: 30px 24px; border-radius: 24px; }
  .download-card { grid-template-columns: 1fr; }
  .download-card > img { width: 48px; height: 48px; }
  .legal-content { padding: 26px 20px; border-radius: 22px; }
  .contact-card { grid-template-columns: 1fr; padding: 28px 24px; }
  .contact-actions .btn { width: 100%; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px 24px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; }
  .footer-bottom span:last-child { text-align: left; }
}

@media print {
  .site-header, .site-footer, .legal-nav, .cta-panel, .skip-link { display: none !important; }
  body { background: white; color: black; }
  .section { padding: 0; }
  .legal-layout { display: block; }
  .legal-content { padding: 0; border: 0; box-shadow: none; }
  a { color: black; text-decoration: none; }
}