:root {
  --bg: #0a0d0b;
  --surface: #111612;
  --surface-raised: #171e18;
  --line: #283128;
  --line-soft: rgba(224, 237, 220, .1);
  --text: #f2f5ee;
  --muted: #a1aba0;
  --dim: #748073;
  --lime: #cefa62;
  --lime-bright: #dcff7d;
  --lime-ink: #172006;
  --violet: #a99af5;
  --orange: #e8aa72;
  --max: 1200px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 96px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", "Microsoft YaHei UI", "PingFang SC", system-ui, sans-serif;
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background: radial-gradient(circle at 76% 8%, rgba(151, 190, 83, .07), transparent 28%);
}
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
svg { display: block; }
[hidden] { display: none !important; }
::selection { background: rgba(206, 250, 98, .28); }
:focus-visible { outline: 2px solid var(--lime); outline-offset: 5px; }
.container { width: min(var(--max), calc(100% - 64px)); margin-inline: auto; }
.section { padding-block: 120px; scroll-margin-top: 76px; }
.skip-link { position: fixed; top: 12px; left: 12px; z-index: 100; padding: 10px 16px; background: var(--lime); color: var(--lime-ink); border-radius: 8px; transform: translateY(-160%); }
.skip-link:focus { transform: translateY(0); }

.site-header { position: sticky; top: 0; z-index: 50; border-bottom: 1px solid var(--line-soft); background: rgba(10, 13, 11, .84); backdrop-filter: blur(18px); }
.header-inner { height: 80px; display: flex; align-items: center; }
.brand { display: inline-flex; align-items: center; gap: 12px; flex: none; }
.brand-mark { position: relative; width: 30px; height: 30px; display: grid; place-items: center; flex: none; }
.brand-mark::before, .brand-mark::after, .brand-mark i { content: ""; position: absolute; transform: rotate(45deg); border-radius: 5px; }
.brand-mark::before { width: 22px; height: 22px; border: 1.5px solid var(--lime); }
.brand-mark::after { width: 12px; height: 12px; background: var(--lime); }
.brand-mark i { width: 30px; height: 30px; border: 1px solid rgba(206, 250, 98, .2); }
.brand-mark.small { width: 22px; height: 22px; }
.brand-mark.small::before { width: 16px; height: 16px; border-radius: 3px; }
.brand-mark.small::after { width: 8px; height: 8px; border-radius: 2px; }
.brand-mark.small i { width: 22px; height: 22px; border-radius: 4px; }
.brand-name { font-size: 16px; font-weight: 750; letter-spacing: .1em; white-space: nowrap; }
.brand-name small { margin-left: 8px; color: var(--muted); font-size: 9px; font-weight: 500; letter-spacing: .2em; }
.site-nav { display: flex; gap: 34px; margin-left: 76px; }
.site-nav a { position: relative; color: var(--muted); font-size: 13px; transition: color .2s; }
.site-nav a::after { content: ""; position: absolute; right: 0; bottom: -9px; left: 0; height: 1px; background: var(--lime); transform: scaleX(0); transform-origin: left; transition: transform .2s; }
.site-nav a:hover { color: var(--text); }
.site-nav a:hover::after { transform: scaleX(1); }
.header-cta { display: inline-flex; align-items: center; gap: 12px; margin-left: auto; padding: 9px 14px; border: 1px solid var(--line); border-radius: 8px; color: #dbe2d8; font-size: 12px; transition: border-color .2s, background .2s; }
.header-cta span { color: var(--lime); }
.header-cta:hover { border-color: #4d5c49; background: var(--surface); }
.menu-toggle { display: none; width: 40px; height: 40px; margin-left: auto; padding: 0; border: 1px solid var(--line); border-radius: 8px; background: transparent; }
.menu-toggle span { display: block; width: 17px; height: 1px; margin: 5px auto; background: var(--text); transition: transform .2s; }
.menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(3px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-3px) rotate(-45deg); }
.mobile-nav { padding: 8px 32px 24px; border-top: 1px solid var(--line-soft); background: #0d110e; }
.mobile-nav a { display: block; padding: 12px 0; color: var(--muted); border-bottom: 1px solid var(--line-soft); }

.hero { display: grid; grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr); align-items: center; gap: 64px; min-height: 690px; padding-block: 76px 92px; }
.hero-copy { position: relative; z-index: 2; min-width: 0; }
.eyebrow { display: flex; align-items: center; gap: 9px; margin: 0 0 24px; color: var(--lime); font-size: 10px; font-weight: 700; letter-spacing: .17em; text-transform: uppercase; }
.status-dot { display: inline-block; width: 6px; height: 6px; flex: none; border-radius: 50%; background: var(--lime); box-shadow: 0 0 12px rgba(206, 250, 98, .45); }
.hero h1 { margin: 0 0 28px; font-size: clamp(54px, 5.3vw, 76px); font-weight: 720; line-height: 1.12; letter-spacing: -.065em; }
.hero h1 span { display: block; white-space: nowrap; }
.accent { color: var(--lime); }
.hero-lede { max-width: 470px; margin: 0 0 34px; color: var(--muted); font-size: 16px; line-height: 1.9; }
.hero-actions { display: flex; align-items: center; gap: 28px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 24px; min-height: 50px; padding: 0 21px; border: 1px solid transparent; border-radius: 9px; font-size: 13px; font-weight: 700; transition: transform .2s, background .2s, box-shadow .2s; }
.button span { font-size: 17px; line-height: 1; }
.button-primary { background: var(--lime); color: var(--lime-ink); box-shadow: 0 10px 32px rgba(164, 209, 65, .1); }
.button-primary:hover { background: var(--lime-bright); box-shadow: 0 13px 34px rgba(164, 209, 65, .17); transform: translateY(-2px); }
.text-link { display: inline-flex; align-items: center; gap: 9px; color: #c2cbc0; font-size: 13px; }
.text-link span { color: var(--lime); transition: transform .2s; }
.text-link:hover { color: var(--text); }
.text-link:hover span { transform: translate(2px, -2px); }
.hero-meta { display: flex; align-items: center; flex-wrap: wrap; gap: 0; margin-top: 32px; color: var(--dim); font-size: 10px; }
.hero-meta > span { display: inline-flex; align-items: center; gap: 7px; }
.hero-meta > span + span::before { content: ""; width: 2px; height: 2px; margin: 0 11px; border-radius: 50%; background: #546050; }
.hero-meta .status-dot { width: 5px; height: 5px; }

.hero-visual { position: relative; min-width: 0; padding: 22px 0 42px; isolation: isolate; }
.stage-grid { position: absolute; inset: -60px -90px -40px -70px; z-index: -2; opacity: .2; background-image: linear-gradient(rgba(207, 235, 192, .1) 1px, transparent 1px), linear-gradient(90deg, rgba(207, 235, 192, .1) 1px, transparent 1px); background-size: 42px 42px; mask-image: radial-gradient(ellipse, #000 20%, transparent 68%); }
.stage-glow { position: absolute; inset: 8% 0 0 10%; z-index: -1; border-radius: 50%; background: rgba(150, 194, 71, .12); filter: blur(80px); }
.product-window { overflow: hidden; width: 100%; border: 1px solid #394438; border-radius: 17px; background: #111712; box-shadow: 0 38px 100px rgba(0, 0, 0, .48), 0 0 0 7px rgba(255, 255, 255, .015); transform: rotate(-1.8deg); }
.window-bar { height: 43px; display: flex; align-items: center; gap: 14px; padding: 0 15px; border-bottom: 1px solid var(--line); background: #151b16; color: var(--dim); font-size: 8px; letter-spacing: .07em; }
.window-dots { display: flex; gap: 5px; }
.window-dots i { width: 6px; height: 6px; border-radius: 50%; background: #3c463c; }
.window-dots i:first-child { background: #758264; }
.window-status { display: inline-flex; align-items: center; gap: 5px; margin-left: auto; color: #a7b59d; }
.window-status i { width: 4px; height: 4px; border-radius: 50%; background: var(--lime); }
.app-layout { display: grid; grid-template-columns: 145px minmax(0, 1fr); min-height: 412px; }
.app-sidebar { position: relative; padding: 19px 12px 65px; border-right: 1px solid var(--line); background: #0f140f; }
.app-brand { display: flex; align-items: center; gap: 8px; padding: 0 5px 20px; font-size: 11px; }
.app-label { margin: 12px 7px 8px; color: #64705f; font-size: 7px; letter-spacing: .13em; }
.group-item { display: flex; align-items: center; gap: 8px; padding: 8px 6px; border-radius: 7px; }
.group-item.active { background: #1b241a; }
.group-avatar { display: grid; place-items: center; width: 29px; height: 29px; flex: none; border: 1px solid #4d6138; border-radius: 8px; background: #29381f; color: var(--lime); font-size: 10px; font-weight: 700; }
.group-avatar.muted { border-color: #3b4038; background: #242a23; color: #a6afa1; font-size: 7px; }
.group-item strong, .sidebar-user strong { display: block; font-size: 9px; font-weight: 600; }
.group-item small, .sidebar-user small { display: block; margin-top: 1px; color: #6f7c69; font-size: 7px; }
.rooms-label { margin-top: 19px; }
.room-link { position: relative; display: flex; align-items: center; gap: 6px; padding: 7px 8px; border-radius: 6px; color: #7c8975; font-size: 8px; }
.room-link.active { color: #dbe6d2; background: #192118; }
.room-link span { color: #718064; }
.room-link i { width: 4px; height: 4px; margin-left: auto; border-radius: 50%; background: var(--lime); }
.sidebar-user { position: absolute; right: 11px; bottom: 13px; left: 11px; display: flex; align-items: center; gap: 7px; padding-top: 11px; border-top: 1px solid var(--line); }
.sidebar-user > span:last-child { margin-left: auto; color: #687362; font-size: 8px; letter-spacing: 1px; }
.room-main { min-width: 0; padding: 25px 23px 16px; background: radial-gradient(circle at 80% 0, rgba(193, 232, 123, .04), transparent 35%), #131914; }
.room-heading { display: flex; align-items: center; justify-content: space-between; }
.room-heading p { margin: 0 0 4px; color: #788571; font-size: 8px; }
.room-heading h2 { margin: 0; font-size: 22px; font-weight: 650; letter-spacing: -.04em; }
.room-count { padding: 4px 8px; border: 1px solid #34402f; border-radius: 20px; color: #a6b49b; font: 8px Consolas, monospace; }
.member-stack { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 7px; margin: 22px 0; }
.member { min-width: 0; padding: 11px 5px 9px; border: 1px solid #2b352a; border-radius: 8px; background: #171e17; text-align: center; }
.avatar { display: grid; place-items: center; width: 27px; height: 27px; margin: 0 auto 7px; border-radius: 8px; color: #152012; font-size: 9px; font-weight: 800; }
.avatar-a { background: #d9ae78; }
.avatar-b { background: #a397e7; }
.avatar-c { background: #86c7b2; }
.avatar-d { border: 1px dashed #526048; background: #232c20; color: #a7b699; }
.member strong { display: block; overflow: hidden; font-size: 7px; font-weight: 600; text-overflow: ellipsis; white-space: nowrap; }
.member small { display: flex; align-items: center; justify-content: center; gap: 3px; margin-top: 3px; color: #788570; font-size: 6px; white-space: nowrap; }
.member small i { width: 3px; height: 3px; border-radius: 50%; background: var(--lime); }
.connection-card { display: flex; align-items: center; gap: 10px; margin-top: 9px; padding: 11px; border: 1px solid #303a2d; border-radius: 9px; background: #171e17; }
.connection-icon { display: grid; place-items: center; width: 30px; height: 30px; flex: none; border-radius: 8px; background: rgba(206, 250, 98, .08); color: var(--lime); }
.connection-icon.violet { background: rgba(169, 154, 245, .09); color: var(--violet); }
.connection-icon svg { width: 15px; height: 15px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.connection-card strong { display: block; font-size: 9px; font-weight: 600; }
.connection-card small { display: block; margin-top: 2px; color: #778371; font-size: 7px; }
.dev-badge { display: inline-flex; align-items: center; justify-content: center; flex: none; padding: 4px 8px; border: 1px solid #384431; border-radius: 20px; color: #a2b08f; font-size: 8px; font-weight: 500; white-space: nowrap; }
.connection-card .dev-badge { margin-left: auto; padding: 3px 6px; color: #a5bd78; font-size: 6px; }
.preview-note { display: flex; align-items: center; gap: 5px; margin: 13px 0 0; color: #65705f; font-size: 6px; }
.preview-note span { width: 3px; height: 3px; border-radius: 50%; background: #697761; }
.floating-tag { position: absolute; bottom: 10px; left: -25px; display: flex; align-items: center; gap: 12px; padding: 13px 17px; border: 1px solid #3b4934; border-radius: 11px; background: rgba(22, 30, 20, .94); box-shadow: 0 16px 45px rgba(0, 0, 0, .35); backdrop-filter: blur(12px); }
.floating-tag strong { display: block; font-size: 11px; font-weight: 650; }
.floating-tag small { display: block; margin-top: 2px; color: var(--dim); font-size: 8px; }

.principles { border-block: 1px solid var(--line-soft); background: #0d110e; }
.principles-inner { min-height: 82px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.principles p { margin: 0; color: var(--dim); font-size: 11px; }
.principles ul { display: flex; align-items: center; gap: 0; margin: 0; padding: 0; color: #b1bcb0; font-size: 11px; list-style: none; }
.principles li { display: flex; align-items: center; }
.principles li + li::before { content: ""; width: 3px; height: 3px; margin: 0 17px; border-radius: 50%; background: #546547; }

.section-heading { margin-bottom: 54px; }
.split-heading { display: grid; grid-template-columns: 1fr 360px; align-items: end; gap: 60px; }
.section-heading h2, .how-heading h2, .closing h2 { margin: 0; font-size: clamp(40px, 4.2vw, 58px); font-weight: 680; line-height: 1.15; letter-spacing: -.055em; }
.section-heading h2 span { color: var(--lime); }
.split-heading > p { margin: 0 0 5px; color: var(--muted); font-size: 14px; line-height: 1.9; }
.feature-grid { display: grid; grid-template-columns: 1.08fr .92fr; grid-template-rows: 1fr 1fr; gap: 18px; }
.feature-card { position: relative; overflow: hidden; min-width: 0; padding: 31px; border: 1px solid var(--line); border-radius: 18px; background: var(--surface); }
.feature-group { grid-row: span 2; min-height: 610px; display: flex; flex-direction: column; background: radial-gradient(circle at 100% 100%, rgba(184, 224, 100, .08), transparent 45%), #121813; }
.feature-connect, .feature-private { min-height: 296px; }
.feature-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 34px; }
.feature-number { color: var(--lime); font: 10px Consolas, monospace; }
.feature-label { color: var(--dim); font-size: 8px; letter-spacing: .14em; }
.feature-copy { position: relative; z-index: 2; }
.feature-copy h3 { margin: 0 0 17px; font-size: 28px; font-weight: 630; line-height: 1.25; letter-spacing: -.045em; }
.feature-copy p { max-width: 410px; margin: 0; color: var(--muted); font-size: 13px; line-height: 1.85; }
.group-visual { width: calc(100% + 20px); margin: auto -20px -50px 0; padding: 19px; border: 1px solid #36422f; border-radius: 13px; background: rgba(19, 27, 18, .88); box-shadow: 0 25px 60px rgba(0, 0, 0, .25); transform: rotate(-3deg); }
.group-visual-head { display: flex; align-items: center; gap: 11px; padding-bottom: 17px; border-bottom: 1px solid var(--line); }
.group-visual-head strong { display: block; font-size: 12px; }
.group-visual-head small { display: block; color: var(--dim); font-size: 8px; }
.group-visual-head > span:last-child { margin-left: auto; color: var(--dim); }
.group-room { display: flex; align-items: center; justify-content: space-between; margin-top: 11px; padding: 13px; border-radius: 8px; background: #1b2419; color: #c9d4c2; font-size: 10px; }
.group-room > span { display: flex; align-items: center; gap: 8px; }
.group-room i { width: 5px; height: 5px; border-radius: 50%; background: var(--lime); }
.group-room small { color: var(--dim); font-size: 8px; }
.tiny-avatars { display: flex; padding-left: 7px; }
.tiny-avatars b { display: grid; place-items: center; width: 22px; height: 22px; margin-left: -7px; border: 2px solid #1b2419; border-radius: 6px; color: #182014; font-size: 7px; }
.connection-orbit { display: flex; align-items: center; justify-content: center; gap: 9px; margin: -5px 0 26px; }
.connection-orbit span { display: grid; place-items: center; width: 52px; height: 52px; border: 1px solid #3a4733; border-radius: 50%; background: #192117; color: #c3d0b7; font-size: 9px; }
.connection-orbit span:nth-of-type(2) { border-color: #647b42; color: var(--lime); }
.connection-orbit i { width: 22px; height: 1px; background: #43503a; }
.private-symbol { position: absolute; top: 73px; right: 32px; display: grid; place-items: center; width: 66px; height: 66px; border: 1px solid rgba(169, 154, 245, .22); border-radius: 18px; background: rgba(169, 154, 245, .05); color: var(--violet); transform: rotate(5deg); }
.private-symbol svg { width: 30px; height: 30px; fill: none; stroke: currentColor; stroke-width: 1.3; stroke-linecap: round; stroke-linejoin: round; }
.feature-private .feature-copy { max-width: 330px; }

.how-panel { overflow: hidden; padding: 64px; border-radius: 25px; background: var(--lime); color: var(--lime-ink); }
.how-heading { display: grid; grid-template-columns: 1fr 320px; align-items: end; gap: 50px; }
.how-heading .eyebrow { grid-column: 1 / -1; margin-bottom: -25px; color: #4b6120; }
.how-heading h2 { font-size: clamp(40px, 4vw, 54px); }
.how-heading > p { margin: 0 0 5px; color: #4b592e; font-size: 13px; line-height: 1.8; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; margin: 55px 0 0; padding: 0; border-top: 1px solid rgba(23, 32, 6, .22); list-style: none; }
.steps li { position: relative; padding: 29px 34px 0 0; }
.steps li + li { padding-left: 34px; border-left: 1px solid rgba(23, 32, 6, .22); }
.step-number { font: 10px Consolas, monospace; color: #5e732e; }
.step-icon { display: grid; place-items: center; width: 42px; height: 42px; margin: 25px 0 24px; border: 1px solid rgba(23, 32, 6, .25); border-radius: 11px; font-size: 20px; }
.steps h3 { margin: 0 0 10px; font-size: 20px; letter-spacing: -.03em; }
.steps p { max-width: 230px; margin: 0; color: #4b592e; font-size: 12px; line-height: 1.8; }

.platforms { padding-top: 20px; }
.platform-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.platform-card { display: flex; align-items: center; gap: 17px; min-width: 0; padding: 26px; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); transition: border-color .2s, transform .2s; }
.platform-card:hover { border-color: #4b5b43; transform: translateY(-3px); }
.platform-icon { display: grid; place-items: center; width: 44px; height: 44px; flex: none; border: 1px solid #3a4733; border-radius: 11px; color: var(--lime); font-size: 25px; }
.platform-icon.apple { font-size: 18px; }
.platform-card h3 { margin: 0; font-size: 15px; font-weight: 650; }
.platform-card p { margin: 4px 0 0; color: var(--dim); font-size: 10px; }
.platform-card .dev-badge { margin-left: auto; }

.closing { padding-top: 20px; }
.closing-panel { position: relative; overflow: hidden; padding: 85px 30px; border: 1px solid #35422e; border-radius: 25px; background: radial-gradient(ellipse at 50% 110%, rgba(188, 233, 92, .14), transparent 58%), #111711; text-align: center; isolation: isolate; }
.closing-panel .eyebrow { justify-content: center; }
.closing h2 { position: relative; font-size: clamp(48px, 5.4vw, 72px); }
.closing h2 span { color: var(--lime); }
.closing-panel > p:not(.eyebrow) { position: relative; margin: 25px 0 30px; color: var(--muted); font-size: 13px; line-height: 1.9; }
.closing-panel .button { position: relative; }
.closing-orbit { position: absolute; top: 50%; left: 50%; z-index: -1; width: 720px; height: 340px; border: 1px solid rgba(206, 250, 98, .08); border-radius: 50%; transform: translate(-50%, -50%) rotate(-12deg); }
.closing-orbit::after { content: ""; position: absolute; inset: 45px -60px; border: 1px solid rgba(169, 154, 245, .07); border-radius: 50%; transform: rotate(24deg); }
.site-footer { border-top: 1px solid var(--line-soft); }
.footer-inner { min-height: 108px; display: grid; grid-template-columns: 1.1fr 1fr 1fr auto; align-items: center; gap: 30px; }
.footer-inner > p, .copyright { margin: 0; color: var(--dim); font-size: 10px; }
.footer-links { display: flex; justify-content: center; gap: 24px; }
.footer-links a { color: var(--muted); font-size: 11px; }
.footer-links a:hover { color: var(--lime); }

@media (max-width: 1100px) {
  .hero { gap: 40px; }
  .hero h1 { font-size: clamp(50px, 5.6vw, 62px); }
  .app-layout { grid-template-columns: 125px minmax(0, 1fr); }
  .app-sidebar { padding-inline: 8px; }
  .room-main { padding-inline: 17px; }
  .feature-card { padding: 26px; }
  .feature-copy h3 { font-size: 25px; }
  .private-symbol { width: 54px; height: 54px; right: 25px; }
  .how-panel { padding: 48px; }
  .platform-card { padding: 21px; gap: 12px; }
  .platform-card .dev-badge { display: none; }
}

@media (max-width: 900px) {
  .container { width: min(100% - 48px, 720px); }
  .section { padding-block: 88px; }
  .site-nav, .header-cta { display: none; }
  .menu-toggle { display: block; }
  .hero { grid-template-columns: 1fr; gap: 50px; min-height: 0; padding-block: 72px 80px; }
  .hero-copy { max-width: 650px; }
  .hero h1 { font-size: clamp(58px, 9vw, 72px); }
  .hero-lede { max-width: 530px; }
  .hero-visual { width: min(100%, 610px); margin-inline: auto; }
  .app-layout { grid-template-columns: 145px minmax(0, 1fr); }
  .room-main { padding-inline: 23px; }
  .principles-inner { padding-block: 24px; }
  .principles p { display: none; }
  .principles ul { width: 100%; justify-content: space-between; }
  .split-heading { grid-template-columns: 1fr; gap: 25px; }
  .split-heading > p { max-width: 540px; }
  .feature-grid { grid-template-columns: 1fr; grid-template-rows: auto; }
  .feature-group { grid-row: auto; min-height: 570px; }
  .feature-connect, .feature-private { min-height: 310px; }
  .feature-private .feature-copy { max-width: 470px; }
  .private-symbol { right: 35px; width: 70px; height: 70px; }
  .how-heading { grid-template-columns: 1fr; gap: 24px; }
  .how-heading .eyebrow { margin-bottom: 0; }
  .how-heading > p { max-width: 450px; }
  .steps { margin-top: 40px; }
  .steps li { padding-right: 22px; }
  .steps li + li { padding-left: 22px; }
  .platforms, .closing { padding-top: 0; }
  .platform-grid { grid-template-columns: 1fr; }
  .platform-card .dev-badge { display: inline-flex; }
  .footer-inner { grid-template-columns: 1fr 1fr; padding-block: 30px; }
  .footer-inner > p { display: none; }
  .footer-links { justify-content: flex-start; order: 3; }
  .copyright { text-align: right; }
}

@media (max-width: 600px) {
  html { scroll-padding-top: 78px; }
  .container { width: calc(100% - 40px); }
  .section { padding-block: 72px; }
  .header-inner { height: 68px; }
  .brand-name small { display: none; }
  .mobile-nav { padding-inline: 20px; }
  .hero { gap: 38px; padding-block: 54px 64px; }
  .eyebrow { margin-bottom: 20px; font-size: 9px; letter-spacing: .12em; }
  .hero h1 { margin-bottom: 23px; font-size: clamp(38px, 10.5vw, 54px); line-height: 1.15; letter-spacing: -.06em; }
  .hero-lede { font-size: 14px; line-height: 1.85; }
  .hero-actions { gap: 22px; }
  .button { min-height: 48px; gap: 19px; }
  .text-link { font-size: 12px; }
  .hero-meta { margin-top: 28px; row-gap: 8px; }
  .hero-visual { padding: 0 0 34px; }
  .stage-grid { inset: 0; }
  .product-window { border-radius: 13px; transform: none; }
  .window-bar { height: 39px; padding-inline: 12px; }
  .app-layout { grid-template-columns: 1fr; min-height: 0; }
  .app-sidebar { display: none; }
  .room-main { padding: 22px 18px 16px; }
  .room-heading h2 { font-size: 23px; }
  .member-stack { gap: 6px; margin-block: 20px; }
  .member { padding-inline: 3px; }
  .connection-card { padding: 12px 10px; }
  .connection-card small { max-width: 150px; }
  .floating-tag { bottom: 0; left: 10px; padding: 11px 14px; }
  .principles-inner { padding-block: 20px; }
  .principles ul { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 20px; font-size: 10px; }
  .principles li + li::before { display: none; }
  .principles li::before { content: ""; width: 4px; height: 4px; margin-right: 8px; border-radius: 50%; background: var(--lime); }
  .section-heading { margin-bottom: 36px; }
  .section-heading h2, .how-heading h2 { font-size: 38px; }
  .split-heading { gap: 20px; }
  .split-heading > p { font-size: 13px; }
  .feature-card { padding: 24px; border-radius: 14px; }
  .feature-top { margin-bottom: 28px; }
  .feature-copy h3 { font-size: 26px; }
  .feature-group { min-height: 550px; }
  .feature-connect { min-height: 320px; }
  .feature-private { min-height: 350px; }
  .private-symbol { top: 79px; right: 24px; width: 48px; height: 48px; border-radius: 13px; }
  .private-symbol svg { width: 23px; height: 23px; }
  .feature-private .feature-copy h3 { max-width: 220px; }
  .how-panel { padding: 32px 25px; border-radius: 18px; }
  .steps { grid-template-columns: 1fr; margin-top: 32px; }
  .steps li { display: grid; grid-template-columns: 46px 1fr; column-gap: 16px; padding: 25px 0; }
  .steps li + li { padding-left: 0; border-top: 1px solid rgba(23, 32, 6, .22); border-left: 0; }
  .step-number { grid-column: 1 / -1; }
  .step-icon { grid-row: span 2; margin: 18px 0 0; }
  .steps h3 { align-self: end; margin: 18px 0 5px; }
  .steps p { max-width: none; }
  .platforms, .closing { padding-top: 0; }
  .platform-card { padding: 20px; }
  .platform-card .dev-badge { padding-inline: 6px; font-size: 7px; }
  .closing-panel { padding: 64px 20px; border-radius: 18px; }
  .closing h2 { font-size: 48px; }
  .closing-orbit { width: 480px; height: 280px; }
  .footer-inner { gap: 20px; }
  .footer-links { gap: 18px; }
}

@media (max-width: 360px) {
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 18px; }
  .hero h1 { font-size: 37px; }
  .connection-card small { max-width: 125px; }
  .platform-card { gap: 10px; padding-inline: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}