:root {
  color-scheme: light dark;
  --accent: #7c3aed;
  --accent-strong: #6d28d9;
  --accent-soft: #f1ebff;
  --page: #f8f8fb;
  --surface: #ffffff;
  --surface-soft: #f1f0f5;
  --text: #18171c;
  --muted: #686671;
  --faint: #92909a;
  --border: rgba(32, 28, 44, 0.1);
  --shadow: 0 26px 80px rgba(41, 28, 72, 0.1);
  --shell: 1180px;
  --document: 860px;
}

* { box-sizing: border-box; }
html { overflow-x: clip; scroll-behavior: smooth; }
body {
  margin: 0;
  overflow-x: hidden;
  background: var(--page);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; }
a { color: var(--accent-strong); text-underline-offset: 0.2em; }
button, a { -webkit-tap-highlight-color: transparent; }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 3px solid color-mix(in srgb, var(--accent) 45%, transparent); outline-offset: 4px; }
h1, h2, h3, p, li { overflow-wrap: break-word; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; top: 8px; left: 12px; z-index: 100; padding: 8px 14px; border-radius: 10px; background: var(--text); color: var(--page); transform: translateY(-150%); }
.skip-link:focus { transform: none; }
.icon-sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
.section-shell, .header-inner, .footer-inner { width: min(calc(100% - 48px), var(--shell)); margin-inline: auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid color-mix(in srgb, var(--border) 72%, transparent);
  background: color-mix(in srgb, var(--page) 84%, transparent);
  backdrop-filter: saturate(160%) blur(22px);
  -webkit-backdrop-filter: saturate(160%) blur(22px);
}
.header-inner { min-height: 68px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text); font-weight: 720; letter-spacing: -0.02em; text-decoration: none; white-space: nowrap; }
.brand img { border-radius: 10px; box-shadow: 0 4px 12px rgba(57, 40, 98, 0.16); }
.brand small { margin-left: 3px; color: var(--faint); font-size: 11px; font-weight: 650; letter-spacing: 0.04em; }
.site-nav { display: flex; align-items: center; gap: 28px; }
.site-nav a { color: var(--muted); font-size: 14px; font-weight: 560; text-decoration: none; transition: color 180ms ease; }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--text); }
.nav-toggle { display: none; width: 42px; height: 42px; border: 0; border-radius: 50%; background: transparent; color: var(--text); }
.nav-toggle > span:last-child, .nav-toggle > span:last-child::before, .nav-toggle > span:last-child::after { display: block; width: 18px; height: 1.5px; border-radius: 2px; background: currentColor; transition: transform 180ms ease; content: ""; }
.nav-toggle > span:last-child { position: relative; margin: auto; }
.nav-toggle > span:last-child::before { position: absolute; top: -5px; }
.nav-toggle > span:last-child::after { position: absolute; top: 5px; }
.nav-toggle[aria-expanded="true"] > span:last-child { background: transparent; }
.nav-toggle[aria-expanded="true"] > span:last-child::before { top: 0; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] > span:last-child::after { top: 0; transform: rotate(-45deg); }

.eyebrow { margin: 0 0 14px; color: var(--accent-strong); font-size: 13px; font-weight: 750; letter-spacing: 0.12em; text-transform: uppercase; }
.hero { min-height: 790px; display: grid; grid-template-columns: 0.82fr 1.18fr; align-items: center; gap: 60px; padding-block: 86px 100px; }
.hero-copy { position: relative; z-index: 2; }
.hero h1 { margin: 0; font-size: clamp(52px, 6.2vw, 88px); line-height: 1.02; letter-spacing: -0.065em; }
.hero h1 span { color: var(--accent); }
.hero-lead { max-width: 530px; margin: 28px 0 0; color: var(--muted); font-size: clamp(18px, 2vw, 22px); line-height: 1.65; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 22px; margin-top: 36px; }
.button { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 11px 20px; border: 1px solid var(--border); border-radius: 14px; background: var(--surface); color: var(--text); font: inherit; font-weight: 680; text-decoration: none; cursor: pointer; transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease; }
.button:hover { transform: translateY(-1px); box-shadow: 0 10px 24px rgba(32, 25, 50, 0.1); }
.button-primary { border-color: var(--accent); background: var(--accent); color: #fff; box-shadow: 0 12px 30px rgba(124, 58, 237, 0.24); }
.button-primary:hover { background: var(--accent-strong); color: #fff; }
.button-disabled { cursor: default; opacity: 0.84; }
.button-disabled:hover { transform: none; }
.button-secondary { background: color-mix(in srgb, var(--surface) 80%, transparent); }
.text-link { display: inline-flex; align-items: center; gap: 7px; color: var(--text); font-weight: 660; text-decoration: none; }
.text-link svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-linecap: round; stroke-linejoin: round; stroke-width: 1.8; transition: transform 180ms ease; }
.text-link:hover svg { transform: translateX(3px); }

.hero-visual { position: relative; min-width: 0; height: 550px; }
.hero-visual::before { position: absolute; inset: 4% -10% 0 8%; border-radius: 50%; background: radial-gradient(circle, rgba(151, 102, 241, 0.24), rgba(190, 162, 244, 0.06) 50%, transparent 72%); filter: blur(10px); content: ""; }
.phone-frame { position: absolute; left: 0; bottom: 3%; z-index: 3; width: 230px; height: 470px; padding: 9px; border: 2px solid #27232e; border-radius: 42px; background: #17151a; box-shadow: 0 38px 80px rgba(35, 24, 55, 0.28), inset 0 0 0 1px rgba(255,255,255,.16); transform: rotate(-4deg); }
.phone-island { position: absolute; top: 17px; left: 50%; z-index: 2; width: 72px; height: 20px; border-radius: 18px; background: #111; transform: translateX(-50%); }
.phone-screen { height: 100%; overflow: hidden; padding: 56px 17px 20px; border-radius: 33px; background: linear-gradient(165deg, #fbf9ff, #ece6fa); color: #1d1924; }
.mock-brand { display: flex; align-items: center; gap: 9px; margin-bottom: 32px; font-size: 17px; }
.mock-brand img { border-radius: 9px; }
.mock-label { margin: 18px 0 7px; color: #77717f; font-size: 10px; font-weight: 650; letter-spacing: .04em; }
.device-row { display: flex; align-items: center; gap: 9px; padding: 13px; border: 1px solid rgba(32,25,45,.06); border-radius: 15px; background: rgba(255,255,255,.78); box-shadow: 0 10px 25px rgba(57,39,92,.08); }
.device-row > span:nth-child(2) { display: flex; flex: 1; flex-direction: column; font-size: 12px; }
.device-row small { color: #77717f; font-size: 9px; }
.device-dot, .status-dot { width: 8px; height: 8px; border-radius: 50%; background: #30b569; box-shadow: 0 0 0 4px rgba(48,181,105,.12); }
.signal { color: #a9a5ae; letter-spacing: 1px; }
.url-field { min-width: 0; display: flex; align-items: center; gap: 6px; padding: 7px 7px 7px 12px; border: 1px solid rgba(32,25,45,.07); border-radius: 13px; background: #fff; font-size: 8px; }
.url-field > span:first-child { min-width: 0; flex: 1; overflow: hidden; color: #706a77; text-overflow: ellipsis; white-space: nowrap; }
.send-chip { padding: 7px 9px; border-radius: 9px; background: #7c3aed; color: #fff; font-size: 9px; font-weight: 700; }
.mini-sites { display: flex; gap: 10px; margin-top: 22px; }
.mini-sites span { width: 38px; height: 38px; display: grid; place-items: center; border-radius: 12px; background: #fff; color: #6d28d9; font-size: 12px; font-weight: 750; box-shadow: 0 8px 18px rgba(55,38,88,.08); }
.connection-line { position: absolute; left: 195px; top: 47%; z-index: 2; width: 150px; height: 30px; display: flex; align-items: center; color: var(--accent); transform: rotate(-3deg); }
.connection-line span { flex: 1; border-top: 1.5px dashed color-mix(in srgb, var(--accent) 65%, transparent); }
.connection-line svg { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 1.5; }
.car-display { position: absolute; right: 0; top: 12%; z-index: 1; width: min(500px, 76%); height: 365px; padding: 20px; border: 4px solid #28252d; border-radius: 28px; background: #1c1920; box-shadow: 0 42px 90px rgba(35, 24, 55, 0.24); transform: perspective(900px) rotateY(-5deg) rotate(1deg); }
.display-top { height: 31px; display: flex; align-items: center; gap: 9px; color: #d7d2dd; font-size: 10px; }
.display-top > span:last-child { margin-left: auto; color: #908a98; }
.browser-window { height: calc(100% - 31px); overflow: hidden; border-radius: 14px; background: #f7f5fb; color: #211d28; }
.browser-bar { height: 36px; display: flex; align-items: center; gap: 5px; padding: 0 12px; border-bottom: 1px solid #e5e1e9; background: #fff; }
.browser-bar i { width: 6px; height: 6px; border-radius: 50%; background: #d4cfd8; }
.browser-bar span { min-width: 0; margin-left: 8px; overflow: hidden; color: #79727f; font-size: 9px; text-overflow: ellipsis; white-space: nowrap; }
.browser-content { height: calc(100% - 36px); display: flex; align-items: center; flex-direction: column; justify-content: center; }
.browser-content p { margin: 0 0 8px; color: #7c3aed; font-size: 10px; font-weight: 700; letter-spacing: .08em; }
.browser-content strong { font-size: 29px; letter-spacing: -.04em; }
.browser-content > span { margin-top: 3px; color: #827c87; font-size: 11px; }
.browser-progress { width: 110px; height: 3px; margin-top: 22px; overflow: hidden; border-radius: 3px; background: #e6e0ec; }
.browser-progress::after { display: block; width: 55%; height: 100%; border-radius: inherit; background: #7c3aed; content: ""; animation: progress 2.6s ease-in-out infinite; }
@keyframes progress { 0% { transform: translateX(-110%); } 55%, 100% { transform: translateX(190%); } }

.intro { max-width: 860px; padding-block: 130px 120px; text-align: center; }
.intro h2, .closing h2 { margin: 0; font-size: clamp(42px, 6vw, 70px); line-height: 1.08; letter-spacing: -.055em; }
.intro > p:last-child { max-width: 650px; margin: 24px auto 0; color: var(--muted); font-size: 20px; }
.feature-story { display: flex; flex-direction: column; gap: 24px; padding-bottom: 120px; }
.story-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.story-card { position: relative; min-width: 0; min-height: 520px; overflow: hidden; padding: clamp(30px, 5vw, 64px); border: 1px solid var(--border); border-radius: 34px; background: var(--surface); box-shadow: var(--shadow); }
.story-copy { position: relative; z-index: 2; max-width: 470px; }
.feature-number { color: var(--accent); font-size: 12px; font-weight: 750; letter-spacing: .12em; }
.story-card h2 { margin: 13px 0 15px; font-size: clamp(32px, 4.2vw, 54px); line-height: 1.08; letter-spacing: -.05em; }
.story-card p { margin: 0; color: var(--muted); font-size: 17px; }
.story-link { min-height: 530px; display: grid; grid-template-columns: .8fr 1.2fr; align-items: center; gap: 50px; background: linear-gradient(145deg, var(--surface), color-mix(in srgb, var(--accent-soft) 55%, var(--surface))); }
.link-flow { display: flex; align-items: center; justify-content: center; }
.flow-card { width: 180px; padding: 24px 18px; border: 1px solid var(--border); border-radius: 22px; background: color-mix(in srgb, var(--surface) 85%, transparent); box-shadow: 0 18px 40px rgba(41,28,72,.1); transform: rotate(-4deg); }
.flow-card span { display: grid; width: 44px; height: 44px; place-items: center; margin-bottom: 30px; border-radius: 14px; background: var(--accent-soft); color: var(--accent-strong); font-size: 11px; font-weight: 800; }
.flow-card strong { display: block; overflow: hidden; font-size: 15px; text-overflow: ellipsis; white-space: nowrap; }
.browser-card { transform: rotate(4deg) translateY(28px); }
.browser-card span { background: #19171d; color: #fff; }
.flow-arrow { position: relative; z-index: 2; width: 70px; height: 70px; display: grid; place-items: center; margin-inline: -8px; border: 8px solid color-mix(in srgb, var(--accent-soft) 70%, var(--surface)); border-radius: 50%; background: var(--accent); color: #fff; font-size: 28px; box-shadow: 0 12px 26px rgba(124,58,237,.26); }
.website-stack { position: absolute; right: 42px; bottom: -17px; left: 42px; height: 215px; }
.website-stack div { position: absolute; right: 0; left: 0; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 13px; padding: 15px; border: 1px solid var(--border); border-radius: 18px; background: color-mix(in srgb, var(--surface) 92%, transparent); box-shadow: 0 15px 35px rgba(41,28,72,.1); }
.website-stack div:nth-child(1) { top: 0; z-index: 3; }
.website-stack div:nth-child(2) { top: 63px; z-index: 2; transform: scale(.94); opacity: .76; }
.website-stack div:nth-child(3) { top: 120px; transform: scale(.87); opacity: .46; }
.website-stack div > span { width: 40px; height: 40px; display: grid; place-items: center; border-radius: 12px; background: var(--accent-soft); color: var(--accent-strong); font-weight: 800; }
.website-stack small { color: var(--faint); }
.story-display { background: linear-gradient(155deg, #222027, #17151a); color: #fff; }
.story-display p { color: #aaa5b0; }
.mode-preview { position: absolute; right: 35px; bottom: -30px; left: 35px; height: 230px; display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.mode-preview > div { padding: 22px; border-radius: 22px; background: #f7f6f9; color: #252129; }
.mode-preview small { color: #89838e; }
.preview-before i { display: block; height: 11px; margin-top: 20px; border-radius: 8px; background: #ddd9e0; }
.preview-before i:nth-of-type(2) { width: 72%; }
.preview-before i:nth-of-type(3) { width: 87%; }
.preview-after { display: flex; flex-direction: column; background: linear-gradient(155deg, #eee6ff, #d8c8fb) !important; }
.preview-after strong { margin: auto 0 0; color: #5b21b6; font-size: 52px; letter-spacing: -.07em; }
.preview-after span { color: #6e57a0; font-size: 12px; }
.device-story { min-height: 490px; display: grid; grid-template-columns: .8fr 1.2fr; align-items: center; gap: 60px; }
.device-list { display: flex; flex-direction: column; gap: 12px; }
.device-list > div { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 14px; padding: 18px; border: 1px solid var(--border); border-radius: 20px; background: var(--surface-soft); }
.device-icon { width: 48px; height: 48px; display: grid; place-items: center; border-radius: 15px; background: var(--surface); color: var(--accent); }
.device-icon svg { width: 23px; height: 23px; fill: none; stroke: currentColor; stroke-linecap: round; stroke-linejoin: round; stroke-width: 1.6; }
.device-list > div > span:nth-child(2) { display: flex; flex-direction: column; }
.device-list small { color: var(--faint); }
.device-list mark { padding: 5px 10px; border-radius: 99px; background: #e5f7eb; color: #168344; font-size: 12px; }
.device-list mark.offline { background: var(--surface); color: var(--faint); }
.media-story { min-height: 540px; display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: 70px; background: linear-gradient(135deg, #ede5ff, #fbfaff); }
.media-orbit { position: relative; width: min(360px, 100%); aspect-ratio: 1; margin: auto; border: 1px solid rgba(124,58,237,.18); border-radius: 50%; }
.media-orbit::before { position: absolute; inset: 18%; border: 1px dashed rgba(124,58,237,.25); border-radius: 50%; content: ""; }
.media-orbit div { position: absolute; inset: 34%; display: grid; place-items: center; border-radius: 28px; background: #7c3aed; color: #fff; box-shadow: 0 24px 60px rgba(124,58,237,.3); }
.media-orbit svg { width: 38px; height: 38px; fill: none; stroke: currentColor; stroke-linecap: round; stroke-linejoin: round; stroke-width: 1.3; }
.media-orbit > span { position: absolute; width: 74px; height: 74px; display: grid; place-items: center; border-radius: 22px; background: rgba(255,255,255,.86); color: #6d28d9; font-size: 10px; font-weight: 800; box-shadow: 0 15px 40px rgba(59,38,94,.12); }
.media-orbit > span:nth-child(1) { top: 0; left: 18%; }
.media-orbit > span:nth-child(2) { right: -2%; top: 46%; }
.media-orbit > span:nth-child(3) { bottom: 3%; left: 9%; }
.privacy-promise { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 30px; margin-bottom: 130px; padding: 46px; border: 1px solid rgba(124,58,237,.14); border-radius: 30px; background: color-mix(in srgb, var(--accent-soft) 62%, var(--surface)); }
.privacy-icon { width: 66px; height: 66px; display: grid; place-items: center; border-radius: 20px; background: var(--accent); color: #fff; box-shadow: 0 16px 34px rgba(124,58,237,.22); }
.privacy-icon svg { width: 30px; height: 30px; fill: none; stroke: currentColor; stroke-linecap: round; stroke-linejoin: round; stroke-width: 1.5; }
.privacy-promise .eyebrow { margin-bottom: 7px; }
.privacy-promise h2 { margin: 0; font-size: 32px; letter-spacing: -.04em; }
.privacy-promise p:last-child { max-width: 680px; margin: 8px 0 0; color: var(--muted); }
.closing { padding-block: 50px 150px; text-align: center; }
.closing img { margin: 0 auto 30px; border-radius: 22px; box-shadow: 0 18px 45px rgba(65,43,105,.2); }
.closing p { margin: 20px 0 0; color: var(--muted); font-size: 18px; }

.document-shell { width: min(calc(100% - 48px), var(--document)); margin-inline: auto; padding-block: 82px 120px; }
.document-heading { margin-bottom: 38px; }
.document-heading h1 { margin: 0; font-size: clamp(42px, 7vw, 66px); line-height: 1.08; letter-spacing: -.055em; }
.document-heading > p:not(.eyebrow) { max-width: 650px; margin: 18px 0 0; color: var(--muted); font-size: 19px; }
.document-heading > span { display: block; margin-top: 17px; color: var(--faint); font-size: 13px; }
.legal-document { padding: clamp(28px, 6vw, 58px); border: 1px solid var(--border); border-radius: 28px; background: var(--surface); box-shadow: var(--shadow); }
.legal-document section + section { margin-top: 38px; padding-top: 34px; border-top: 1px solid var(--border); }
.legal-document h2 { margin: 0 0 14px; font-size: 22px; line-height: 1.4; letter-spacing: -.025em; }
.legal-document h3 { margin: 25px 0 8px; font-size: 17px; }
.legal-document p, .legal-document ul { margin: 10px 0 0; color: var(--muted); }
.legal-document ul { padding-left: 1.25em; }
.legal-document li + li { margin-top: 8px; }
.support-shell { width: min(calc(100% - 48px), 1040px); }
.support-contact { display: grid; grid-template-columns: 1.25fr .75fr; gap: 50px; align-items: center; padding: clamp(30px, 5vw, 52px); border-radius: 28px; background: linear-gradient(140deg, #2b2534, #17151a); color: #fff; box-shadow: var(--shadow); }
.support-contact h2 { margin: 0; font-size: clamp(32px, 5vw, 48px); line-height: 1.1; letter-spacing: -.045em; }
.support-contact > div > p:last-child { margin: 16px 0 0; color: #bbb4c2; }
.contact-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.contact-actions p { width: 100%; margin: 7px 0 0; color: #bcb5c3; font-family: ui-monospace, "SFMono-Regular", Menlo, monospace; font-size: 12px; text-align: center; }
.faq-list { display: grid; grid-template-columns: 230px 1fr; gap: 60px; padding-top: 90px; }
.faq-intro h2 { margin: 0; font-size: 38px; letter-spacing: -.04em; }
.accordions { border-top: 1px solid var(--border); }
.accordions details { border-bottom: 1px solid var(--border); }
.accordions summary { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 23px 0; font-size: 18px; font-weight: 680; cursor: pointer; list-style: none; }
.accordions summary::-webkit-details-marker { display: none; }
.accordions summary span { color: var(--faint); font-size: 23px; font-weight: 350; transition: transform 180ms ease; }
.accordions details[open] summary span { transform: rotate(45deg); }
.accordions details p { margin: -4px 38px 24px 0; color: var(--muted); }
.about-page { padding-block: 105px 130px; }
.about-hero { max-width: 870px; margin-inline: auto; text-align: center; }
.about-hero img { margin: 0 auto 28px; border-radius: 27px; box-shadow: 0 22px 54px rgba(60,40,99,.2); }
.about-hero h1 { margin: 0; font-size: clamp(46px, 7vw, 78px); line-height: 1.05; letter-spacing: -.06em; }
.about-hero > p:last-child { max-width: 720px; margin: 28px auto 0; color: var(--muted); font-size: 20px; }
.about-values { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; margin-top: 100px; }
.about-values article { padding: 34px; border: 1px solid var(--border); border-radius: 26px; background: var(--surface); }
.about-values span { color: var(--accent); font-size: 12px; font-weight: 750; }
.about-values h2 { margin: 36px 0 8px; font-size: 26px; }
.about-values p { margin: 0; color: var(--muted); }
.independent-note { max-width: 820px; margin: 100px auto 0; padding: 44px; border-radius: 28px; background: var(--surface-soft); text-align: center; }
.independent-note h2 { margin: 0; font-size: 28px; }
.independent-note p { margin: 14px 0 19px; color: var(--muted); }
.not-found { min-height: calc(100vh - 200px); display: flex; align-items: center; flex-direction: column; justify-content: center; text-align: center; }
.not-found h1 { max-width: 720px; margin: 0; font-size: clamp(42px, 7vw, 72px); line-height: 1.05; letter-spacing: -.055em; }
.not-found > p:not(.eyebrow) { color: var(--muted); }
.not-found div { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-top: 16px; }

.site-footer { border-top: 1px solid var(--border); background: color-mix(in srgb, var(--surface) 45%, var(--page)); }
.footer-inner { display: flex; justify-content: space-between; gap: 50px; padding-block: 46px 55px; }
.footer-brand { display: flex; flex-direction: column; gap: 5px; }
.footer-brand strong { font-size: 15px; }
.footer-brand span { color: var(--faint); font-size: 12px; }
.footer-links { display: flex; flex-wrap: wrap; align-content: flex-start; justify-content: flex-end; gap: 10px 24px; }
.footer-links a { color: var(--muted); font-size: 13px; text-decoration: none; }
.footer-links a:hover { color: var(--text); }

@media (max-width: 1024px) {
  .hero { min-height: 720px; grid-template-columns: .9fr 1.1fr; gap: 30px; }
  .hero-visual { height: 490px; transform: scale(.9); transform-origin: center right; }
  .story-card { min-height: 490px; }
}

@media (max-width: 820px) {
  .section-shell, .header-inner, .footer-inner, .document-shell, .support-shell { width: min(calc(100% - 36px), var(--shell)); }
  .hero { min-height: auto; grid-template-columns: 1fr; gap: 55px; padding-top: 80px; text-align: center; }
  .hero-lead { margin-inline: auto; }
  .hero-actions { justify-content: center; }
  .hero-visual { width: min(650px, 100%); margin-inline: auto; transform: none; }
  .story-grid { grid-template-columns: 1fr; }
  .story-link, .device-story, .media-story { grid-template-columns: 1fr; gap: 40px; }
  .story-link { padding-bottom: 70px; }
  .link-flow { padding-top: 15px; }
  .device-story { padding-bottom: 55px; }
  .media-story { padding-block: 54px; }
  .media-story .story-copy { order: -1; }
  .privacy-promise { grid-template-columns: auto 1fr; }
  .privacy-promise .text-link { grid-column: 2; }
  .support-contact { grid-template-columns: 1fr; }
  .contact-actions p { text-align: left; }
  .faq-list { grid-template-columns: 1fr; gap: 30px; }
}

@media (max-width: 650px) {
  .header-inner { min-height: 62px; }
  .nav-toggle { display: block; }
  .site-nav { position: absolute; top: calc(100% + 1px); right: 0; left: 0; display: none; align-items: stretch; flex-direction: column; gap: 0; padding: 8px 18px 18px; border-bottom: 1px solid var(--border); background: color-mix(in srgb, var(--page) 96%, transparent); backdrop-filter: blur(22px); -webkit-backdrop-filter: blur(22px); }
  .site-nav.is-open { display: flex; }
  .site-nav a { padding: 11px 10px; border-radius: 10px; font-size: 15px; }
  .site-nav a[aria-current="page"] { background: var(--surface-soft); }
  .hero { padding-top: 64px; }
  .hero h1 { font-size: clamp(44px, 13vw, 62px); }
  .hero-lead { font-size: 17px; }
  .hero-visual { height: 390px; }
  .hero-visual::before { inset-inline: 0; }
  .phone-frame { left: 2%; width: 154px; height: 320px; padding: 6px; border-radius: 29px; }
  .phone-island { top: 11px; width: 49px; height: 13px; }
  .phone-screen { padding: 37px 11px 14px; border-radius: 23px; }
  .mock-brand { gap: 6px; margin-bottom: 14px; font-size: 12px; }
  .mock-brand img { width: 24px; height: 24px; border-radius: 7px; }
  .mock-label { margin: 9px 0 4px; font-size: 7px; }
  .device-row { gap: 6px; padding: 8px; border-radius: 10px; }
  .device-row > span:nth-child(2) { font-size: 8px; }
  .device-row small { font-size: 6px; }
  .device-dot { width: 5px; height: 5px; }
  .url-field { padding: 5px 4px 5px 7px; border-radius: 8px; font-size: 5px; }
  .send-chip { padding: 5px 6px; border-radius: 6px; font-size: 6px; }
  .mini-sites { gap: 6px; margin-top: 12px; }
  .mini-sites span { width: 25px; height: 25px; border-radius: 8px; font-size: 8px; }
  .connection-line { left: 135px; width: 67px; }
  .connection-line svg { width: 17px; height: 17px; }
  .car-display { right: 0; top: 14%; width: 68%; height: 248px; padding: 12px; border-width: 3px; border-radius: 20px; }
  .display-top { height: 22px; font-size: 7px; }
  .browser-window { height: calc(100% - 22px); }
  .browser-bar { height: 26px; padding-inline: 8px; }
  .browser-bar i { width: 4px; height: 4px; }
  .browser-bar span { font-size: 6px; }
  .browser-content { height: calc(100% - 26px); }
  .browser-content p { font-size: 7px; }
  .browser-content strong { font-size: 17px; }
  .browser-content > span { font-size: 7px; }
  .intro { padding-block: 80px; }
  .intro h2, .closing h2 { font-size: 40px; }
  .intro > p:last-child { font-size: 17px; }
  .feature-story { padding-bottom: 80px; }
  .story-card { min-height: 470px; padding: 30px 24px; border-radius: 26px; }
  .story-card h2 { font-size: 36px; }
  .story-card p { font-size: 15px; }
  .story-link { min-height: 560px; }
  .flow-card { width: 125px; padding: 17px 12px; border-radius: 16px; }
  .flow-card span { width: 34px; height: 34px; margin-bottom: 20px; border-radius: 10px; font-size: 8px; }
  .flow-card strong { font-size: 10px; }
  .flow-arrow { width: 49px; height: 49px; border-width: 5px; font-size: 20px; }
  .website-stack { right: 22px; left: 22px; }
  .mode-preview { right: 18px; left: 18px; }
  .device-story, .media-story { min-height: 620px; }
  .device-list > div { padding: 13px; }
  .device-icon { width: 40px; height: 40px; }
  .media-orbit { width: 280px; }
  .privacy-promise { grid-template-columns: 1fr; gap: 20px; margin-bottom: 80px; padding: 28px 24px; }
  .privacy-promise .text-link { grid-column: auto; }
  .privacy-icon { width: 54px; height: 54px; }
  .closing { padding-bottom: 100px; }
  .document-shell { padding-block: 60px 85px; }
  .document-heading h1 { font-size: 42px; }
  .legal-document { padding: 28px 22px; border-radius: 22px; }
  .legal-document h2 { font-size: 20px; }
  .support-contact { padding: 30px 24px; }
  .contact-actions { align-items: stretch; flex-direction: column; }
  .contact-actions p { overflow-wrap: anywhere; text-align: center; }
  .accordions summary { font-size: 16px; }
  .about-page { padding-block: 70px 90px; }
  .about-hero h1 { font-size: 44px; }
  .about-hero > p:last-child { font-size: 17px; }
  .about-values { grid-template-columns: 1fr; margin-top: 70px; }
  .independent-note { margin-top: 70px; padding: 30px 24px; }
  .footer-inner { flex-direction: column; gap: 28px; }
  .footer-links { justify-content: flex-start; }
}

@media (max-width: 390px) {
  .section-shell, .header-inner, .footer-inner, .document-shell, .support-shell { width: min(calc(100% - 28px), var(--shell)); }
  .hero-actions { align-items: stretch; flex-direction: column; }
  .hero-actions .text-link { justify-content: center; }
  .hero-visual { height: 350px; transform: scale(.92); transform-origin: top center; }
  .story-card { padding-inline: 20px; }
  .flow-card { width: 112px; }
  .device-list > div { grid-template-columns: auto 1fr; }
  .device-list mark { grid-column: 2; justify-self: start; }
}

@media (prefers-color-scheme: dark) {
  :root {
    --accent: #a47af7;
    --accent-strong: #b899fb;
    --accent-soft: #2d2142;
    --page: #111014;
    --surface: #1b191f;
    --surface-soft: #242129;
    --text: #f5f2f8;
    --muted: #b6afbc;
    --faint: #8f8995;
    --border: rgba(245, 242, 248, 0.1);
    --shadow: 0 26px 80px rgba(0, 0, 0, 0.24);
  }
  .media-story { background: linear-gradient(135deg, #2c2140, #1c1921); }
  .media-orbit > span { background: rgba(34,30,40,.94); color: #c3a7fa; }
  .device-list mark { background: #163423; color: #80d49c; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}