@font-face {
  font-family: 'Inter';
  src: url('/assets/fonts/inter-var.woff2') format('woff2');
  font-weight: 100 900;
  font-display: swap;
}

:root {
  --bg: #05070c;
  --bg-2: #0a0e16;
  --panel: rgba(255, 255, 255, 0.035);
  --line: rgba(255, 255, 255, 0.09);
  --line-2: rgba(255, 255, 255, 0.16);
  --text: #eef2f7;
  --muted: #9aa5b4;
  --dim: #6b7686;
  --teal: #2dd4bf;
  --coral: #fb7a5d;
  --grad: linear-gradient(100deg, #5eead4 0%, #a5b4fc 48%, #fda4af 100%);
  --radius: 22px;
  --wrap: 1240px;
  --ease: cubic-bezier(0.2, 0.7, 0.1, 1);
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', 'Segoe UI', sans-serif;
  --mono: 'SF Mono', ui-monospace, 'JetBrains Mono', Menlo, Consolas, monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; scroll-padding-top: 80px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
.lang-zh { letter-spacing: 0.01em; }
img, video { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
h1, h2, h3, h4, p { margin: 0; }
h1, h2, h3, .product__tagline, .pcard__tag { text-wrap: balance; }
p { text-wrap: pretty; }
.lang-zh :is(h1, h2, h3, .product__tagline, .pcard__tag) { word-break: keep-all; overflow-wrap: anywhere; }
::selection { background: rgba(45, 212, 191, 0.35); }

.wrap { width: min(var(--wrap), 100% - 48px); margin-inline: auto; }
.skip { position: absolute; left: -9999px; top: 8px; z-index: 100; padding: 8px 14px; background: #fff; color: #000; border-radius: 8px; }
.skip:focus { left: 8px; }
:focus-visible { outline: 2px solid var(--teal); outline-offset: 3px; border-radius: 6px; }

/* ---------- type ---------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 13px; font-weight: 600; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--muted);
}
.eyebrow::before { content: ''; width: 22px; height: 1px; background: currentColor; opacity: 0.6; }
.section-head { max-width: 820px; margin-bottom: 64px; }
.section-title {
  margin-top: 18px;
  font-size: clamp(36px, 5.2vw, 68px); font-weight: 700; line-height: 1.06; letter-spacing: -0.035em;
}
.lang-zh .section-title { letter-spacing: -0.01em; line-height: 1.15; }
.section-lead { margin-top: 22px; font-size: clamp(17px, 1.5vw, 20px); color: var(--muted); max-width: 680px; }

/* ---------- buttons ---------- */
.btn {
  --h: 46px;
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  height: var(--h); padding: 0 22px; border-radius: 999px;
  font-size: 15px; font-weight: 600; letter-spacing: 0; white-space: nowrap;
  transition: transform 0.35s var(--ease), background 0.3s, border-color 0.3s, box-shadow 0.35s;
}
.btn svg { width: 18px; height: 18px; flex: none; transition: transform 0.35s var(--ease); }
.btn:hover svg:last-child { transform: translateX(3px); }
.btn--primary { background: #fff; color: #05070c; box-shadow: 0 10px 30px -10px rgba(255, 255, 255, 0.45); }
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 16px 40px -12px rgba(255, 255, 255, 0.55); }
.btn--ghost { border: 1px solid var(--line-2); background: rgba(255, 255, 255, 0.02); }
.btn--ghost:hover { border-color: rgba(255, 255, 255, 0.4); background: rgba(255, 255, 255, 0.06); }
.btn--glass { background: rgba(255, 255, 255, 0.08); border: 1px solid rgba(255, 255, 255, 0.18); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); }
.btn--glass:hover { background: rgba(255, 255, 255, 0.14); }
.btn--glass svg:first-child { width: 14px; height: 14px; }
.btn--sm { --h: 38px; padding: 0 16px; font-size: 14px; }
.btn--lg { --h: 54px; padding: 0 28px; font-size: 16px; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin-top: 36px; }
.actions--center { justify-content: center; }
.chip { display: inline-flex; align-items: center; height: 46px; padding: 0 18px; border-radius: 999px; font-size: 14px; color: var(--muted); border: 1px dashed var(--line-2); }

/* ---------- nav ---------- */
.nav { position: fixed; inset: 0 0 auto; z-index: 50; transition: background 0.4s, border-color 0.4s, backdrop-filter 0.4s; border-bottom: 1px solid transparent; }
.nav.is-scrolled { background: rgba(5, 7, 12, 0.72); backdrop-filter: saturate(160%) blur(18px); -webkit-backdrop-filter: saturate(160%) blur(18px); border-color: var(--line); }
.nav__inner { height: 72px; display: flex; align-items: center; gap: 32px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 650; letter-spacing: -0.01em; }
.brand__name { font-size: 17px; }
.brand__zh { font-size: 13px; color: var(--muted); font-weight: 500; padding-left: 10px; border-left: 1px solid var(--line-2); }
.nav__links { display: flex; gap: 30px; margin-inline: auto; font-size: 15px; color: #c9d1dc; }
.nav__links a { position: relative; transition: color 0.25s; }
.nav__links a:hover { color: #fff; }
.nav__end { display: flex; align-items: center; gap: 14px; margin-left: auto; }
.nav__lang { font-size: 14px; font-weight: 600; color: #c9d1dc; padding: 6px 10px; border-radius: 8px; border: 1px solid var(--line); }
.nav__lang:hover { color: #fff; border-color: var(--line-2); }
.nav__burger { display: none; width: 40px; height: 40px; position: relative; }
.nav__burger span { position: absolute; left: 10px; right: 10px; height: 1.5px; background: #fff; transition: transform 0.35s var(--ease), top 0.35s; }
.nav__burger span:first-child { top: 15px; }
.nav__burger span:last-child { top: 24px; }
.nav.is-open .nav__burger span:first-child { top: 19.5px; transform: rotate(45deg); }
.nav.is-open .nav__burger span:last-child { top: 19.5px; transform: rotate(-45deg); }
.drawer { display: none; }

/* ---------- hero ---------- */
.hero { position: relative; min-height: 100svh; display: flex; flex-direction: column; justify-content: center; overflow: hidden; isolation: isolate; }
.hero__media { position: absolute; inset: 0; z-index: -1; }
.hero__poster, .hero__video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.hero__video { opacity: 0; transition: opacity 1.4s ease; }
.hero__video.is-playing { opacity: 1; }
.hero__veil {
  position: absolute; inset: 0;
  background:
    radial-gradient(120% 80% at 0% 50%, rgba(5, 7, 12, 0.92) 0%, rgba(5, 7, 12, 0.55) 45%, rgba(5, 7, 12, 0.15) 80%),
    linear-gradient(180deg, rgba(5, 7, 12, 0.55) 0%, rgba(5, 7, 12, 0) 25%, rgba(5, 7, 12, 0) 60%, var(--bg) 100%);
}
.hero__grain { position: absolute; inset: 0; opacity: 0.08; mix-blend-mode: overlay; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E"); }
.hero__content { padding-top: 120px; padding-bottom: 160px; }
.eyebrow--hero { color: #cfd8e3; }
.hero__title {
  margin-top: 26px; max-width: 980px;
  font-size: clamp(46px, 8.2vw, 116px); font-weight: 700; line-height: 0.98; letter-spacing: -0.045em;
}
.lang-zh .hero__title { font-size: clamp(44px, 7.6vw, 104px); line-height: 1.1; letter-spacing: -0.02em; }
.hero__title span { display: block; }
.hero__title span:last-child { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; padding-bottom: 0.06em; }
.hero__lead { margin-top: 30px; max-width: 620px; font-size: clamp(17px, 1.6vw, 21px); color: #c4cdd8; }
.hero__marquee { position: absolute; left: 0; right: 0; bottom: 34px; mask-image: linear-gradient(90deg, transparent, #000 15%, #000 85%, transparent); -webkit-mask-image: linear-gradient(90deg, transparent, #000 15%, #000 85%, transparent); }
.marquee { display: flex; width: max-content; animation: marquee 38s linear infinite; }
.marquee__track { display: flex; gap: 64px; padding-right: 64px; }
.marquee__track > span { display: inline-flex; align-items: center; gap: 12px; font-size: 15px; font-weight: 600; color: rgba(238, 242, 247, 0.6); white-space: nowrap; }
.marquee .picon { width: 26px; height: 26px; border-radius: 7px; font-size: 13px; }
@keyframes marquee { to { transform: translateX(-50%); } }
.hero__scroll { position: absolute; right: 40px; bottom: 30px; width: 26px; height: 42px; border: 1.5px solid rgba(255, 255, 255, 0.35); border-radius: 14px; display: none; }
.hero__scroll span { position: absolute; left: 50%; top: 8px; width: 3px; height: 8px; margin-left: -1.5px; border-radius: 2px; background: #fff; animation: scrolldot 1.8s var(--ease) infinite; }
@keyframes scrolldot { 0% { opacity: 0; transform: translateY(-4px); } 40% { opacity: 1; } 100% { opacity: 0; transform: translateY(14px); } }

/* ---------- manifesto ---------- */
.manifesto { padding: 160px 0 140px; position: relative; }
.manifesto::before { content: ''; position: absolute; inset: 0 0 auto; height: 1px; background: linear-gradient(90deg, transparent, var(--line-2), transparent); }
.manifesto__text {
  margin-top: 34px; max-width: 1100px;
  font-size: clamp(28px, 3.7vw, 52px); font-weight: 600; line-height: 1.22; letter-spacing: -0.025em;
}
.lang-zh .manifesto__text { line-height: 1.45; letter-spacing: 0; }
.manifesto__text .w { color: rgba(238, 242, 247, 0.16); transition: color 0.6s ease; }
.manifesto__text .w.is-on { color: var(--text); }
.pillars { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 110px; }
.pillar { padding: 34px 30px 36px; border-radius: var(--radius); background: var(--panel); border: 1px solid var(--line); transition-delay: var(--d); }
.pillar__n { font-family: var(--mono); font-size: 13px; color: var(--dim); }
.pillar h3 { margin-top: 26px; font-size: 24px; font-weight: 650; letter-spacing: -0.02em; }
.pillar__alt { margin-top: 4px; font-size: 13px; color: var(--dim); letter-spacing: 0.06em; text-transform: uppercase; }
.pillar p:last-child { margin-top: 18px; color: var(--muted); font-size: 16px; }

/* ---------- product grid ---------- */
.products { padding: 120px 0 80px; }
.pgrid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 20px; }
.pcard { grid-column: span 2; position: relative; display: flex; flex-direction: column; border-radius: var(--radius); overflow: hidden; background: var(--bg-2); border: 1px solid var(--line); transition: transform 0.6s var(--ease), border-color 0.4s, box-shadow 0.6s var(--ease); }
.pcard:nth-child(1), .pcard:nth-child(2) { grid-column: span 3; }
.pcard:hover { transform: translateY(-6px); border-color: color-mix(in srgb, var(--accent) 45%, transparent); box-shadow: 0 30px 80px -40px color-mix(in srgb, var(--accent) 70%, transparent); }
.pcard__media { aspect-ratio: 16 / 9; overflow: hidden; position: relative; }
.pcard__media::after { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 40%, var(--bg-2)); }
.pcard__media img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.2s var(--ease); }
.pcard:hover .pcard__media img { transform: scale(1.05); }
.pcard__body { padding: 0 28px 28px; margin-top: -34px; position: relative; display: flex; flex-direction: column; flex: 1; }
.pcard__top { display: flex; align-items: flex-end; justify-content: space-between; }
.pcard .pname { margin-top: 18px; font-size: 26px; }
.pcard__cat { margin-top: 4px; font-size: 13px; color: var(--dim); }
.pcard__tag { margin-top: 14px; color: #c9d1dc; font-size: 16px; flex: 1; }
.pcard__more { margin-top: 22px; display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 600; color: var(--accent); }
.pcard__more svg { width: 16px; height: 16px; transition: transform 0.35s var(--ease); }
.pcard:hover .pcard__more svg { transform: translateX(4px); }

.picon { width: 56px; height: 56px; border-radius: 15px; flex: none; box-shadow: 0 8px 24px -8px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(255, 255, 255, 0.08); object-fit: cover; background: #0b0f17; }
.picon--mark { display: grid; place-items: center; font-weight: 800; font-size: 26px; color: #fff; background: linear-gradient(140deg, var(--accent), #1e1b4b); }
.picon--plus { display: grid; place-items: center; font-size: 26px; font-weight: 300; color: var(--muted); background: transparent; box-shadow: none; border: 1px dashed var(--line-2); }
.pname { font-weight: 700; letter-spacing: -0.025em; line-height: 1.1; }
.pname__alt { font-weight: 500; color: var(--muted); font-size: 0.6em; letter-spacing: 0; margin-left: 6px; }
.status { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 600; font-style: normal; padding: 5px 10px; border-radius: 999px; border: 1px solid var(--line-2); color: var(--muted); background: rgba(5, 7, 12, 0.6); backdrop-filter: blur(8px); }
.status::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.status--live { color: #4ade80; border-color: rgba(74, 222, 128, 0.35); }
.status--soon { color: #fbbf24; border-color: rgba(251, 191, 36, 0.3); }

/* ---------- product detail ---------- */
.product { position: relative; padding: 140px 0; overflow: hidden; isolation: isolate; }
.product__bg { position: absolute; inset: 0; z-index: -1; opacity: 0.16; filter: blur(70px) saturate(1.4); transform: scale(1.2); }
.product__bg img { width: 100%; height: 100%; object-fit: cover; }
.product::after { content: ''; position: absolute; inset: 0; z-index: -1; background: linear-gradient(180deg, var(--bg) 0%, transparent 25%, transparent 75%, var(--bg) 100%); }
.product__grid { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: 80px; align-items: center; }
.product__copy, .product__visual { min-width: 0; }
.product--flip .product__copy { order: 2; }
.product__head { display: flex; align-items: center; gap: 18px; }
.product__head .picon { width: 64px; height: 64px; border-radius: 17px; }
.product__head .eyebrow::before { display: none; }
.product__head .eyebrow { color: var(--accent); letter-spacing: 0.08em; font-size: 12px; }
.pname--xl { margin-top: 6px; font-size: clamp(34px, 3.6vw, 48px); }
.product__tagline { margin-top: 34px; font-size: clamp(26px, 2.6vw, 36px); font-weight: 650; line-height: 1.2; letter-spacing: -0.02em; }
.lang-zh .product__tagline { line-height: 1.35; letter-spacing: 0; }
.product__summary { margin-top: 20px; color: var(--muted); font-size: 17px; }
.features { list-style: none; padding: 0; margin: 34px 0 0; display: grid; grid-template-columns: 1fr 1fr; gap: 22px 28px; }
.features li { position: relative; padding-left: 18px; }
.features li::before { content: ''; position: absolute; left: 0; top: 9px; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 12px var(--accent); }
.features strong { display: block; font-size: 16px; font-weight: 650; }
.features span { display: block; margin-top: 4px; font-size: 14.5px; color: var(--muted); line-height: 1.55; }
.product .btn--primary { background: var(--accent); color: #031012; box-shadow: 0 12px 34px -12px var(--accent); }
.product .btn--primary:hover { box-shadow: 0 18px 44px -12px var(--accent); }

.pvisual { position: relative; border-radius: 26px; }
.pvisual__img, .pvisual__film { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; border-radius: 26px; border: 1px solid var(--line); box-shadow: 0 50px 100px -50px rgba(0, 0, 0, 0.9), 0 0 0 1px rgba(255, 255, 255, 0.03); }
.pvisual__film { position: relative; display: block; overflow: hidden; padding: 0; }
.pvisual__film img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.2s var(--ease); }
.pvisual__film:hover img { transform: scale(1.04); }
.pvisual__film::after { content: ''; position: absolute; inset: 0; background: radial-gradient(circle at center, rgba(0, 0, 0, 0.1), rgba(0, 0, 0, 0.45)); }
.playbtn { position: absolute; left: 50%; top: 50%; z-index: 1; width: 84px; height: 84px; margin: -42px 0 0 -42px; border-radius: 50%; display: grid; place-items: center; background: rgba(255, 255, 255, 0.16); border: 1px solid rgba(255, 255, 255, 0.35); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); transition: transform 0.4s var(--ease), background 0.3s; }
.playbtn svg { width: 30px; height: 30px; margin-left: 4px; }
.pvisual__film:hover .playbtn { transform: scale(1.08); background: rgba(255, 255, 255, 0.26); }
.pvisual--withphone { padding-right: 70px; }
.product--flip .pvisual--withphone { padding-right: 0; padding-left: 70px; }
.phone { position: absolute; right: 0; bottom: -40px; width: 30%; max-width: 230px; aspect-ratio: 660 / 1434; border-radius: 34px; padding: 7px; background: linear-gradient(160deg, #3a404c, #0d1016 40%, #2a2f38); box-shadow: 0 40px 80px -30px rgba(0, 0, 0, 0.95), 0 0 0 1px rgba(255, 255, 255, 0.08); }
.product--flip .phone { right: auto; left: 0; }
.phone img { width: 100%; height: 100%; object-fit: cover; object-position: top; border-radius: 28px; }
.code { max-width: 100%; margin: 56px 0 0; padding: 22px 24px; border-radius: 16px; background: rgba(8, 12, 22, 0.85); border: 1px solid var(--line); font-family: var(--mono); font-size: 13.5px; line-height: 1.65; color: #c7d2fe; overflow-x: auto; }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); margin: 64px 0 0; border-top: 1px solid var(--line); }
.stats > div { padding: 22px 6px 0 0; }
.stats dt { font-size: clamp(22px, 2.2vw, 30px); font-weight: 700; letter-spacing: -0.03em; }
.stats dd { margin: 4px 0 0; font-size: 13px; color: var(--dim); }
.product .stats dt { color: #fff; }

/* ---------- platform ---------- */
.platform { padding: 160px 0 140px; }
.stack { display: grid; gap: 14px; perspective: 1400px; }
.layer {
  --c: var(--teal);
  display: grid; grid-template-columns: 260px 1fr auto; gap: 40px; align-items: center;
  padding: 34px 36px; border-radius: var(--radius);
  background: linear-gradient(100deg, color-mix(in srgb, var(--c) 10%, transparent), rgba(255, 255, 255, 0.02) 50%);
  border: 1px solid color-mix(in srgb, var(--c) 22%, var(--line));
  transition: transform 0.6s var(--ease), border-color 0.4s;
}
.layer:nth-child(1) { --c: #a78bfa; }
.layer:nth-child(2) { --c: #60a5fa; }
.layer:nth-child(3) { --c: var(--teal); }
.layer:hover { transform: translateX(8px); }
.layer__n { font-family: var(--mono); font-size: 12px; color: var(--c); }
.layer__label h3 { margin-top: 6px; font-size: 24px; font-weight: 650; letter-spacing: -0.02em; }
.layer__label p { font-size: 13px; color: var(--dim); letter-spacing: 0.06em; text-transform: uppercase; }
.layer__desc { color: var(--muted); font-size: 16px; max-width: 460px; }
.layer__tags { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; justify-content: flex-end; max-width: 380px; }
.layer__tags li { font-size: 13px; padding: 6px 12px; border-radius: 999px; background: rgba(255, 255, 255, 0.04); border: 1px solid var(--line); color: #c9d1dc; white-space: nowrap; }

/* ---------- global ---------- */
.global { position: relative; padding: 180px 0 160px; overflow: hidden; isolation: isolate; }
.global__bg { position: absolute; inset: 0; z-index: -1; }
.global__bg img { width: 100%; height: 100%; object-fit: cover; object-position: center 30%; opacity: 0.7; }
.global__bg::after { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, var(--bg) 0%, rgba(5, 7, 12, 0.5) 30%, rgba(5, 7, 12, 0.55) 70%, var(--bg) 100%), linear-gradient(90deg, rgba(5, 7, 12, 0.85), transparent 70%); }
.regions { display: grid; grid-template-columns: repeat(2, minmax(0, 340px)); gap: 16px; margin-top: 48px; }
.region { position: relative; display: grid; gap: 2px; padding: 22px 24px 22px 46px; border-radius: 18px; background: rgba(8, 12, 20, 0.55); border: 1px solid var(--line-2); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); transition: border-color 0.3s, transform 0.4s var(--ease); }
.region:hover { transform: translateY(-3px); border-color: rgba(255, 255, 255, 0.35); }
.region__dot { position: absolute; left: 22px; top: 29px; width: 9px; height: 9px; border-radius: 50%; background: var(--dim); }
.region--here .region__dot { background: var(--teal); box-shadow: 0 0 0 0 rgba(45, 212, 191, 0.7); animation: ping 2s infinite; }
@keyframes ping { 70% { box-shadow: 0 0 0 12px rgba(45, 212, 191, 0); } 100% { box-shadow: 0 0 0 0 rgba(45, 212, 191, 0); } }
.region strong { font-size: 18px; }
.region__domain { font-family: var(--mono); font-size: 14px; color: var(--teal); }
.region__desc { font-size: 14px; color: var(--muted); }
.stats--lg { max-width: 900px; margin-top: 80px; }
.stats--lg dt { font-size: clamp(34px, 4vw, 56px); background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stats--lg dd { font-size: 14px; }

/* ---------- about ---------- */
.about { padding: 160px 0 120px; position: relative; }
.about__grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 80px; align-items: center; }
.about__media { position: relative; }
.about__media img { width: 100%; aspect-ratio: 4 / 3.6; object-fit: cover; border-radius: 26px; border: 1px solid var(--line); }
.about__badge { position: absolute; right: -18px; bottom: -22px; display: flex; align-items: center; gap: 12px; padding: 16px 22px; border-radius: 20px; background: rgba(8, 12, 20, 0.78); border: 1px solid var(--line-2); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); font-weight: 750; font-size: 34px; letter-spacing: -0.03em; box-shadow: 0 30px 60px -30px #000; }
.about__plus { color: var(--dim); font-weight: 300; }
.about__ai { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.about .section-title span { display: block; }
.grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.about__body { margin-top: 18px; color: var(--muted); font-size: 16px; }
.flow { list-style: none; padding: 0; margin: 110px 0 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; counter-reset: f; }
.flow__step { position: relative; padding: 28px 26px 30px; border-radius: var(--radius); background: var(--panel); border: 1px solid var(--line); transition-delay: var(--d); }
.flow__step:first-child { background: linear-gradient(160deg, rgba(251, 122, 93, 0.14), rgba(255, 255, 255, 0.02) 60%); border-color: rgba(251, 122, 93, 0.3); }
.flow__step:not(:last-child)::after { content: ''; position: absolute; right: -12px; top: 42px; width: 8px; height: 8px; border-top: 1.5px solid var(--dim); border-right: 1.5px solid var(--dim); transform: rotate(45deg); }
.flow__who { display: inline-block; font-family: var(--mono); font-size: 12px; padding: 3px 9px; border-radius: 999px; border: 1px solid var(--line-2); color: var(--teal); }
.flow__step:first-child .flow__who { color: var(--coral); border-color: rgba(251, 122, 93, 0.4); }
.flow__step h3 { margin-top: 20px; font-size: 22px; font-weight: 650; letter-spacing: -0.02em; }
.flow__alt { font-size: 12px; color: var(--dim); text-transform: uppercase; letter-spacing: 0.08em; }
.flow__step p:last-child { margin-top: 12px; font-size: 15px; color: var(--muted); }

/* ---------- roadmap ---------- */
.roadmap { padding: 100px 0 140px; }
.roadmap .section-head { margin-bottom: 40px; }
.family { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.family li { display: flex; align-items: center; gap: 14px; padding: 10px 14px 10px 10px; border-radius: 16px; background: var(--panel); border: 1px solid var(--line); font-weight: 600; transition: border-color 0.3s; }
.family li:hover { border-color: color-mix(in srgb, var(--accent, #fff) 40%, transparent); }
.family .picon { width: 38px; height: 38px; border-radius: 11px; font-size: 17px; }
.family li span:not(.picon) { flex: 1; }
.family__next { color: var(--muted); border-style: dashed !important; }

/* ---------- contact ---------- */
.contact { position: relative; padding: 180px 0; text-align: center; overflow: hidden; isolation: isolate; }
.contact__glow { position: absolute; z-index: -1; left: 50%; top: 50%; width: 900px; height: 520px; transform: translate(-50%, -50%); background: radial-gradient(closest-side, rgba(45, 212, 191, 0.22), rgba(167, 139, 250, 0.12) 50%, transparent); filter: blur(30px); }
.contact__inner { display: flex; flex-direction: column; align-items: center; }
.contact__title { margin-top: 22px; font-size: clamp(38px, 6vw, 84px); font-weight: 700; letter-spacing: -0.04em; line-height: 1.05; max-width: 1000px; }
.lang-zh .contact__title { letter-spacing: -0.01em; line-height: 1.2; }
.contact .section-lead { margin-inline: auto; }

/* ---------- footer ---------- */
.footer { border-top: 1px solid var(--line); padding: 70px 0 40px; background: #04060a; }
.footer__grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; }
.footer__brand p { margin-top: 16px; color: var(--muted); font-size: 15px; max-width: 280px; }
.footer__col { display: flex; flex-direction: column; gap: 10px; font-size: 15px; }
.footer__col h4 { font-size: 13px; font-weight: 600; color: var(--dim); text-transform: uppercase; letter-spacing: 0.12em; margin-bottom: 6px; }
.footer__col a { color: #c3ccd7; transition: color 0.2s; }
.footer__col a:hover { color: #fff; }
.footer__legal { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; margin-top: 60px; padding-top: 26px; border-top: 1px solid var(--line); font-size: 13px; color: var(--dim); }
.footer__legal a:hover { color: var(--muted); }

/* ---------- film modal ---------- */
.film { position: fixed; inset: 0; z-index: 90; display: grid; place-items: center; padding: 24px; }
.film[hidden] { display: none; }
.film__backdrop { position: absolute; inset: 0; background: rgba(2, 3, 6, 0.86); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); animation: fade 0.35s ease; }
.film__box { position: relative; width: min(1200px, 100%); animation: rise 0.5s var(--ease); }
.film__box video { width: 100%; max-height: 82vh; border-radius: 18px; background: #000; box-shadow: 0 40px 120px -20px #000; }
.film__close { position: absolute; right: 0; top: -52px; width: 40px; height: 40px; border-radius: 50%; font-size: 26px; line-height: 1; background: rgba(255, 255, 255, 0.1); border: 1px solid var(--line-2); }
@keyframes fade { from { opacity: 0; } }
@keyframes rise { from { opacity: 0; transform: translateY(20px) scale(0.98); } }

/* ---------- reveal ---------- */
.js .reveal { opacity: 0; transform: translateY(28px); transition: opacity 1s var(--ease), transform 1s var(--ease); }
.js .reveal.is-in { opacity: 1; transform: none; }
.hero .reveal:nth-child(2) { transition-delay: 0.08s; }
.hero .reveal:nth-child(3) { transition-delay: 0.16s; }
.hero .reveal:nth-child(4) { transition-delay: 0.24s; }

/* ---------- responsive ---------- */
@media (min-width: 900px) { .hero__scroll { display: block; } }
@media (max-width: 1100px) {
  .product__grid, .about__grid { grid-template-columns: minmax(0, 1fr); gap: 56px; }
  .flow { grid-template-columns: 1fr 1fr; }
  .flow__step::after { display: none; }
  .family { grid-template-columns: 1fr 1fr; }
  .about__badge { right: 16px; }
  .product--flip .product__copy { order: 0; }
  .layer { grid-template-columns: 1fr; gap: 16px; }
  .layer__tags { justify-content: flex-start; max-width: none; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 900px) {
  .nav__links, .nav__end .btn { display: none; }
  .nav__burger { display: block; }
  .drawer { display: grid; gap: 4px; position: absolute; inset: 72px 0 auto; padding: 0 24px; max-height: 0; overflow: hidden; background: rgba(5, 7, 12, 0.96); backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px); transition: max-height 0.5s var(--ease), padding 0.5s var(--ease); }
  .nav.is-open .drawer { max-height: 420px; padding: 12px 24px 24px; border-bottom: 1px solid var(--line); }
  .nav.is-open { background: rgba(5, 7, 12, 0.96); }
  .drawer a { padding: 14px 0; font-size: 18px; border-bottom: 1px solid var(--line); }
  .pgrid { grid-template-columns: 1fr 1fr; }
  .pcard, .pcard:nth-child(1), .pcard:nth-child(2) { grid-column: span 1; }
  .pillars { grid-template-columns: 1fr; margin-top: 70px; }
  .product, .platform, .roadmap { padding: 100px 0; }
  .manifesto { padding: 110px 0 90px; }
  .global { padding: 120px 0; }
  .contact { padding: 120px 0; }
}
@media (max-width: 640px) {
  body { font-size: 16px; }
  .wrap { width: calc(100% - 40px); }
  .brand__zh { display: none; }
  .pgrid { grid-template-columns: 1fr; }
  .features { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); row-gap: 8px; }
  .regions, .flow, .family { grid-template-columns: 1fr; }
  .about { padding: 100px 0 80px; }
  .flow { margin-top: 70px; }
  .pvisual--withphone, .product--flip .pvisual--withphone { padding: 0 0 40px; }
  .phone { width: 28%; bottom: 0; right: 12px; border-radius: 20px; padding: 4px; }
  .product--flip .phone { left: 14px; }
  .phone img { border-radius: 16px; }
  .hero__content { padding-bottom: 130px; }
  .hero__veil { background: linear-gradient(180deg, rgba(5, 7, 12, 0.6) 0%, rgba(5, 7, 12, 0.55) 50%, var(--bg) 100%); }
  .footer__grid { grid-template-columns: 1fr; }
  .section-head { margin-bottom: 44px; }
  .nav__inner { gap: 12px; }
  .nav__end { gap: 6px; }
  .nav__burger { margin-right: -8px; }
  .lang-zh .section-title { font-size: 30px; }
  .section-title { font-size: 34px; }
  .lang-zh .hero__title { font-size: 42px; }
  .product__tagline { font-size: 24px; margin-top: 26px; }
  .pname--xl { font-size: 32px; }
  .product__head .picon { width: 54px; height: 54px; border-radius: 14px; }
  .code { margin-top: 64px; padding: 16px; font-size: 12px; }
  .stats { margin-top: 44px; }
  .manifesto__text { font-size: 26px; }
  .contact__title { font-size: 36px; }
  .lang-zh .contact__title { font-size: 32px; }
  .about__badge { right: 12px; bottom: -18px; font-size: 26px; padding: 12px 16px; }
  .layer { padding: 26px 22px; }
  .pcard__body { padding: 0 22px 24px; }
  .actions .btn { flex: 1 1 auto; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .js .reveal { opacity: 1; transform: none; }
  .manifesto__text .w { color: var(--text); }
}