:root {
  --bg: #0a0a0c;
  --bg-soft: #101014;
  --card: #15151b;
  --card-2: #1c1c24;
  --line: rgba(255,255,255,.10);
  --line-strong: rgba(255,255,255,.18);
  --text: #f4f2ee;
  --muted: rgba(244,242,238,.63);
  --dim: rgba(244,242,238,.40);
  --violet: #d0b2ff;
  --cream: #ffeeda;
  --ember: #e8400d;
  --green: #84cf9c;
  --grad: linear-gradient(125deg, var(--violet), var(--cream) 47%, var(--ember));
  --display: "Space Grotesk", "HarmonyOS Sans SC", "MiSans", sans-serif;
  --body: "Noto Sans SC", "HarmonyOS Sans SC", "Microsoft YaHei UI", sans-serif;
  --page: min(1180px, calc(100% - 48px));
  --ease: cubic-bezier(.22,1,.36,1);
  color-scheme: dark;
  font-family: var(--body);
  background: var(--bg);
  color: var(--text);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; overflow-x: hidden; background: var(--bg); color: var(--text); font-size: 16px; line-height: 1.65; -webkit-font-smoothing: antialiased; }
body::after { content: ""; position: fixed; inset: 0; z-index: 60; pointer-events: none; opacity: .035; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='2'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E"); }
*::selection { background: rgba(232,64,13,.5); color: #fff; }
*:focus-visible { outline: 2px solid var(--violet); outline-offset: 4px; border-radius: 5px; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
h1, h2, h3 { font-family: var(--display); line-height: 1.06; letter-spacing: -.035em; }
h1, h2, h3, p { margin-top: 0; }

.site-header { position: fixed; z-index: 50; top: 0; left: 0; right: 0; height: 66px; display: flex; align-items: center; justify-content: space-between; padding: 0 max(24px, calc((100vw - 1180px) / 2)); border-bottom: 1px solid var(--line); background: rgba(10,10,12,.72); backdrop-filter: blur(16px); color: var(--text); }
.site-header.is-scrolled { background: rgba(10,10,12,.92); }
.brand { display: inline-flex; align-items: center; gap: 10px; width: max-content; font-family: var(--display); font-size: 19px; font-weight: 700; letter-spacing: .02em; }
.brand img { width: 30px; height: 30px; border-radius: 50%; box-shadow: 0 0 22px rgba(232,64,13,.42); }
.shiny-text { background-image: linear-gradient(110deg, #b5b5b5 20%, rgba(255,255,255,.48) 38%, #fff 50%, rgba(255,255,255,.48) 62%, #b5b5b5 80%); background-size: 240% 100%; background-position: 100% 0; background-clip: text; -webkit-background-clip: text; color: transparent; animation: shiny-sweep 2s linear infinite; }
@keyframes shiny-sweep { to { background-position: -100% 0; } }
nav { display: flex; align-items: center; gap: 4px; }
nav a { padding: 9px 15px; border-radius: 10px; color: var(--muted); font-size: 14px; transition: color .2s, background .2s; }
nav a:hover { background: rgba(255,255,255,.06); color: var(--text); }
.header-download { min-height: 38px; padding: 9px 17px; border: 1px solid var(--line-strong); border-radius: 999px; color: var(--text); font-family: var(--display); font-size: 13px; font-weight: 600; transition: transform .2s var(--ease), background .2s; }
.header-download:hover { transform: translateY(-2px); background: rgba(255,255,255,.07); }

.hero { position: relative; min-height: 770px; padding: 168px 0 96px; overflow: hidden; background: var(--bg); }
.hero-video { position: absolute; z-index: 0; inset: 0; width: 100%; height: 100%; object-fit: cover; filter: saturate(.9) contrast(1.04); opacity: .72; }
.hero-shade { position: absolute; z-index: 1; inset: 0; background: linear-gradient(90deg, rgba(10,10,12,.84) 0%, rgba(10,10,12,.58) 28%, rgba(10,10,12,.08) 65%, rgba(10,10,12,.18) 100%), linear-gradient(180deg, rgba(10,10,12,.46) 0%, transparent 25%, transparent 68%, rgba(10,10,12,.74) 100%); pointer-events: none; }
.hero-grid { position: absolute; z-index: 2; inset: 0; opacity: .32; background-image: linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px); background-size: 56px 56px; mask-image: radial-gradient(ellipse 80% 70% at 58% 30%, #000 20%, transparent 78%); }
.hero-grid::before { content: ""; position: absolute; inset: -20%; background: radial-gradient(ellipse at 20% 17%, rgba(208,178,255,.25), transparent 27%), radial-gradient(ellipse at 87% 32%, rgba(232,64,13,.18), transparent 30%), radial-gradient(ellipse at 52% 92%, rgba(255,238,218,.1), transparent 26%); filter: blur(42px); }
.hero-content { position: absolute; z-index: 4; left: max(24px, 4vw); bottom: 78px; width: min(620px, calc(100% - 48px)); height: auto; margin: 0; padding: 0; }
h1 { max-width: 660px; margin-bottom: 20px; font-size: clamp(54px, 7vw, 84px); font-weight: 700; }
.hero-lead { max-width: 620px; margin-bottom: 16px; font-family: var(--display); font-size: clamp(25px, 3.5vw, 43px); font-weight: 600; line-height: 1.12; background-image: linear-gradient(110deg, var(--violet) 10%, var(--cream) 35%, #fff 50%, var(--cream) 65%, var(--ember) 90%); background-size: 240% 100%; background-position: 100% 0; background-clip: text; -webkit-background-clip: text; color: transparent; animation: shiny-sweep 2.4s linear infinite; }
.hero-copy { max-width: 510px; margin-bottom: 34px; color: var(--muted); font-size: 17px; font-weight: 300; line-height: 1.75; }
.hero-actions { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.primary-action { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 13px 24px; border-radius: 999px; background: linear-gradient(180deg, #f7f6f1, #deddd6); color: #0c0c0e; box-shadow: 0 10px 30px -10px rgba(232,64,13,.52); font-family: var(--display); font-size: 14px; font-weight: 700; transition: transform .2s var(--ease), box-shadow .2s; }
.primary-action:hover { transform: translateY(-2px); box-shadow: 0 16px 36px -12px rgba(232,64,13,.66); }
.text-action { padding: 10px 4px; color: var(--muted); font-family: var(--display); font-size: 14px; }
.text-action:hover { color: var(--text); }
.text-action span { color: var(--violet); }
.platform-note { margin-top: 38px; color: var(--dim); font-family: var(--display); font-size: 13px; }
.hero-caption { position: absolute; z-index: 5; right: max(24px, calc((100vw - 1180px) / 2)); bottom: 26px; display: flex; gap: 24px; color: var(--dim); font-family: var(--display); font-size: 11px; letter-spacing: .06em; }

.hero-visual { position: absolute; z-index: 2; top: 142px; right: max(18px, calc((100vw - 1280px) / 2)); width: min(57vw, 760px); opacity: .9; filter: drop-shadow(0 30px 70px rgba(0,0,0,.8)); transform: rotate(-3deg); }
.visual-topline { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; color: var(--dim); font-family: var(--display); font-size: 10px; letter-spacing: .12em; }
.visual-topline i { width: 42px; height: 1px; background: var(--ember); }
.visual-board { min-height: 388px; padding: 14px; }
.board-rail { border-color: var(--line); }
.board-main { border-color: transparent; background: transparent; }
.board-heading, .board-footer { color: var(--dim); }
.board-heading strong { color: var(--text); }
.flow-node { border-color: var(--line-strong); border-radius: 14px; background: var(--card-2); }
.flow-node b { color: var(--text); }
.node-scene { border-color: rgba(208,178,255,.72); box-shadow: 0 0 35px rgba(208,178,255,.12); }
.flow-line { background: var(--violet); }
.visual-note { color: var(--dim); font-family: var(--display); }
.visual-note b { color: var(--ember); }

.workflow-section, .capability-section { width: var(--page); margin: 0 auto; padding: 112px 0; }
.section-heading { display: flex; flex-direction: column; align-items: center; margin-bottom: 54px; text-align: center; }
.section-heading h2 { max-width: 760px; margin-bottom: 14px; font-size: clamp(34px, 4.6vw, 56px); }
.section-heading p { max-width: 580px; margin-bottom: 0; color: var(--muted); font-size: 16px; font-weight: 300; }
.workflow-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin: 0; padding: 0; list-style: none; }
.workflow-list li { min-height: 250px; padding: 30px; border: 1px solid var(--line); border-radius: 20px; background: var(--card); transition: transform .3s var(--ease), border-color .3s, background .3s; }
.workflow-list li:hover { transform: translateY(-5px); border-color: var(--line-strong); background: var(--card-2); }
.step-index { display: inline-flex; align-items: center; justify-content: center; width: 34px; height: 34px; margin-bottom: 60px; border: 1px solid rgba(208,178,255,.5); border-radius: 50%; color: var(--violet); font-family: var(--display); font-size: 11px; }
.workflow-list h3 { margin-bottom: 10px; font-size: 20px; }
.workflow-list p { margin-bottom: 0; color: var(--muted); font-size: 14px; font-weight: 300; line-height: 1.65; }

.local-section { position: relative; display: grid; grid-template-columns: .9fr 1.1fr; gap: 9vw; padding: 112px max(24px, calc((100vw - 1180px) / 2)); overflow: hidden; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--bg-soft); }
.local-section::before { content: ""; position: absolute; width: 55vw; height: 35vw; right: -22vw; top: -18vw; background: radial-gradient(ellipse, rgba(232,64,13,.15), transparent 66%); filter: blur(35px); }
.local-copy, .boundary-list { position: relative; z-index: 1; }
.local-copy h2 { max-width: 520px; margin-bottom: 22px; font-size: clamp(36px, 4.7vw, 58px); }
.local-copy p { max-width: 490px; margin-bottom: 0; color: var(--muted); font-size: 16px; font-weight: 300; line-height: 1.8; }
.boundary-list { border-top: 1px solid var(--line-strong); }
.boundary-item { display: grid; grid-template-columns: 130px 1fr; gap: 24px; padding: 24px 0; border-bottom: 1px solid var(--line); }
.boundary-item strong { color: var(--cream); font-family: var(--display); font-size: 14px; }
.boundary-item span { color: var(--muted); font-size: 14px; }

.capability-section { background: var(--bg); }
.capability-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.capability-grid article { min-height: 190px; padding: 30px; border: 1px solid var(--line); border-radius: 20px; background: var(--card); transition: transform .3s var(--ease), border-color .3s; }
.capability-grid article:hover { transform: translateY(-4px); border-color: var(--line-strong); }
.capability-grid h3 { margin-bottom: 42px; font-size: 20px; }
.capability-grid p { max-width: 48ch; margin-bottom: 0; color: var(--muted); font-size: 14px; font-weight: 300; line-height: 1.7; }

.download-section { position: relative; display: grid; grid-template-columns: 1.2fr .8fr; gap: 80px; align-items: end; padding: 96px max(24px, calc((100vw - 1180px) / 2)); overflow: hidden; background: linear-gradient(120deg, #251b2d, #441d1b 58%, #8f2d0e); }
.download-section::after { content: ""; position: absolute; inset: 0; opacity: .3; background-image: linear-gradient(rgba(255,255,255,.07) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.07) 1px, transparent 1px); background-size: 44px 44px; mask-image: linear-gradient(90deg, #000, transparent 80%); }
.download-copy, .download-action { position: relative; z-index: 1; }
.download-copy h2 { max-width: 620px; margin-bottom: 22px; font-size: clamp(36px, 5vw, 62px); }
.download-copy p { max-width: 610px; margin-bottom: 0; color: rgba(244,242,238,.78); font-size: 16px; font-weight: 300; }
.download-action { display: flex; flex-direction: column; align-items: flex-start; gap: 14px; }
.download-action span { color: rgba(244,242,238,.68); font-size: 13px; }
.release-state { display: flex; align-items: center; min-height: 48px; color: var(--text); font-family: var(--display); font-size: 15px; }
.release-dot { width: 9px; height: 9px; margin-right: 9px; border-radius: 50%; background: #d7ad43; box-shadow: 0 0 14px rgba(215,173,67,.55); }

footer { width: var(--page); min-height: 112px; margin: 0 auto; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 24px; color: var(--dim); font-size: 13px; }
.footer-brand { color: var(--text); }
footer p { margin: 0; }
footer > a:last-child { justify-self: end; }
.reveal { opacity: 0; transform: translateY(22px); filter: blur(3px); transition: opacity .7s var(--ease), transform .7s var(--ease), filter .7s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); filter: blur(0); }

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .reveal { opacity: 1; transform: none; filter: none; transition: none; } }
@media (max-width: 850px) {
  .site-header { padding: 0 18px; }
  nav { display: none; }
  .hero-visual { right: -106px; width: 650px; opacity: .8; transform: rotate(-5deg) scale(.74); transform-origin: top right; }
  .hero-content { left: 24px; bottom: 66px; width: min(620px, calc(100% - 48px)); padding: 0; }
  .hero { min-height: 850px; }
  .hero-caption { display: none; }
  .workflow-list, .capability-grid, .local-section, .download-section { grid-template-columns: 1fr; }
  .workflow-list { gap: 14px; }
  .workflow-list li { min-height: auto; }
  .step-index { margin-bottom: 38px; }
  .local-section, .download-section { gap: 38px; }
  footer { grid-template-columns: 1fr auto; }
  footer p { display: none; }
}
@media (max-width: 520px) {
  :root { --page: calc(100% - 32px); }
  .site-header { height: 60px; }
  .brand { font-size: 17px; }
  .header-download { padding: 8px 13px; font-size: 12px; }
  .hero { min-height: 790px; padding-top: 110px; }
  .hero-content { left: 16px; bottom: 52px; width: calc(100% - 32px); padding: 0; }
  h1 { font-size: 54px; }
  .hero-lead { font-size: 28px; }
  .hero-copy { font-size: 15px; }
  .hero-actions .primary-action { width: 100%; }
  .text-action { display: none; }
  .hero-visual { top: 93px; right: -158px; transform: rotate(-5deg) scale(.54); }
  .workflow-section, .capability-section { padding: 78px 0; }
  .section-heading { align-items: flex-start; text-align: left; }
  .section-heading h2 { font-size: 38px; }
  .local-section, .download-section { padding-top: 78px; padding-bottom: 78px; }
  .local-copy h2, .download-copy h2 { font-size: 40px; }
  .boundary-item { grid-template-columns: 1fr; gap: 6px; }
  .capability-grid article { min-height: 160px; padding: 25px; }
  .capability-grid h3 { margin-bottom: 24px; }
}