@font-face {
  font-family: "Space Grotesk";
  src: url("../space-grotesk-latin.woff2") format("woff2");
  font-weight: 300 700;
  font-style: normal;
  font-display: swap;
}

:root {
  --bg: #ffffff;
  --bg-soft: #f5f5f7;
  --bg-warm: #fff8f4;
  --surface: #ffffff;
  --panel: #f5f5f7;
  --panel-strong: #ececee;
  --line: #e5e5e7;
  --line-strong: #d2d2d7;
  --text: #1d1d1f;
  --muted: #6e6e73;
  --muted-strong: #3a3a3c;
  --orange: #fd560f;
  --orange-bright: #e64a00;
  --orange-deep: #c2410c;
  --orange-soft: #fff0e8;
  --cream: #fff3ea;
  --green: #0e9f6e;
  --font-display: "Space Grotesk", "PingFang SC", "HarmonyOS Sans SC", "MiSans", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "PingFang SC", "HarmonyOS Sans SC", "MiSans", "Noto Sans SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", "JetBrains Mono", "Cascadia Code", Menlo, monospace;
  --ease: cubic-bezier(0.22, 0.72, 0.2, 1);
  --radius: 28px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.03), 0 10px 30px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 18px 48px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 34px 90px rgba(0, 0, 0, 0.12);
}

*,
*::before,
*::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
  background: var(--bg);
}

body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img,
video,
svg { display: block; max-width: 100%; }

a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
button:disabled { cursor: default; }

::selection { background: var(--orange); color: #fff; }

:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 3px;
  border-radius: 6px;
}

.skip-link {
  position: fixed;
  top: 14px;
  left: 14px;
  z-index: 100;
  padding: 10px 14px;
  border-radius: 10px;
  background: var(--text);
  color: #fff;
  font-size: 13px;
  transform: translateY(-160%);
  transition: transform 0.2s var(--ease);
}
.skip-link:focus { transform: none; }

.page-noise { display: none; }

.wrap {
  position: relative;
  z-index: 1;
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
}

/* ---------- nav ---------- */

.nav {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  transition: background 0.35s var(--ease), border-color 0.35s var(--ease), backdrop-filter 0.35s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  background: rgba(255, 255, 255, 0.78);
  border-bottom-color: var(--line);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
}

.nav-inner {
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
  min-height: 76px;
  display: flex;
  align-items: center;
  gap: 34px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}
.brand img {
  width: 34px;
  height: 34px;
  border-radius: 11px;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.06), 0 6px 18px rgba(0, 0, 0, 0.08);
}
.brand-word {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--text);
}
.brand-cn {
  margin-left: 1px;
  color: #86868b;
  font-size: 11px;
  letter-spacing: 0.18em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 30px;
  margin-left: auto;
  color: var(--muted);
  font-size: 14px;
}
.nav-links a {
  position: relative;
  padding: 6px 0;
  transition: color 0.2s ease;
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 0;
  height: 1px;
  background: var(--orange);
  transition: right 0.25s var(--ease);
}
.nav-links a:hover { color: var(--text); }
.nav-links a:hover::after { right: 0; }

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.lang-switch {
  display: inline-flex;
  padding: 3px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: #fff;
}
.lang-switch button {
  padding: 4px 9px;
  border-radius: 999px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.04em;
  line-height: 1.5;
  transition: color 0.2s ease, background 0.2s ease;
}
.lang-switch button[aria-pressed="true"] {
  background: var(--text);
  color: #fff;
}

/* ---------- buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  height: 50px;
  padding: 0 24px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.01em;
  white-space: nowrap;
  transition: transform 0.22s var(--ease), background 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease, color 0.22s ease;
}
.btn svg { flex: 0 0 auto; }

.btn-primary {
  background: var(--orange);
  color: #fff;
  box-shadow: 0 10px 30px rgba(253, 86, 15, 0.22), inset 0 1px 0 rgba(255, 255, 255, 0.2);
}
.btn-primary:hover {
  transform: translateY(-2px);
  background: var(--orange-bright);
  box-shadow: 0 16px 40px rgba(253, 86, 15, 0.28), inset 0 1px 0 rgba(255, 255, 255, 0.2);
}
.btn-primary:active { transform: translateY(0); }

.btn-ghost {
  border: 1px solid var(--line-strong);
  background: #fff;
  color: var(--text);
}
.btn-ghost:hover {
  border-color: #b8b8bd;
  background: var(--bg-soft);
}

.btn-small {
  height: 38px;
  padding: 0 15px;
  border-radius: 999px;
  background: var(--orange);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  box-shadow: 0 6px 18px rgba(253, 86, 15, 0.2);
}
.btn-small:hover { background: var(--orange-bright); transform: translateY(-1px); }

.btn-block { width: 100%; }

.btn-disabled,
.btn:disabled {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  color: #86868b;
  box-shadow: none;
}

/* ---------- hero ---------- */

.hero {
  position: relative;
  isolation: isolate;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: 146px 0 90px;
  overflow: hidden;
  background:
    radial-gradient(1000px 680px at 78% 6%, rgba(253, 86, 15, 0.075), transparent 62%),
    linear-gradient(180deg, #fff 0%, #fbfbfd 100%);
}

.mesh {
  position: absolute;
  inset: 0;
  z-index: -1;
  width: 100%;
  height: 100%;
  opacity: 0.3;
  mix-blend-mode: multiply;
  pointer-events: none;
}

.hero-grid {
  position: absolute;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(rgba(29, 29, 31, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(29, 29, 31, 0.045) 1px, transparent 1px);
  background-size: 66px 66px;
  mask-image: radial-gradient(ellipse 70% 62% at 52% 46%, #000 12%, transparent 76%);
  -webkit-mask-image: radial-gradient(ellipse 70% 62% at 52% 46%, #000 12%, transparent 76%);
  opacity: 0.55;
}

.hero-glow {
  position: absolute;
  z-index: -2;
  top: -260px;
  right: -150px;
  width: 980px;
  height: 980px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(253, 86, 15, 0.12) 0%, rgba(253, 86, 15, 0.04) 36%, transparent 68%);
  filter: blur(18px);
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 30%;
  z-index: -1;
  background: linear-gradient(to bottom, transparent, #fbfbfd);
  pointer-events: none;
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(360px, 0.96fr);
  align-items: center;
  gap: clamp(40px, 6vw, 88px);
}

.hero-copy { max-width: 650px; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 26px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.03);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  line-height: 1.2;
  text-transform: uppercase;
}
.eyebrow-ver {
  padding-left: 9px;
  border-left: 1px solid var(--line);
  color: var(--orange-deep);
  letter-spacing: 0.05em;
}
.pulse {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 0 0 rgba(253, 86, 15, 0.45);
  animation: pulse 2.6s infinite;
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  font-weight: 600;
  text-wrap: balance;
  color: var(--text);
}

h1 {
  margin: 0 0 24px;
  font-size: clamp(46px, 6.1vw, 82px);
  line-height: 1.03;
  letter-spacing: -0.052em;
}
.grad {
  background: linear-gradient(102deg, #ff8a4c 2%, #f4510a 48%, #c2410c 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.lede {
  max-width: 560px;
  margin: 0 0 32px;
  color: var(--muted);
  font-size: clamp(16px, 1.35vw, 18px);
  line-height: 1.75;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 26px;
}

.platform-row {
  display: flex;
  align-items: center;
  gap: 11px;
  margin-bottom: 38px;
  color: #86868b;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.platform-row i {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--line-strong);
}
.platform-row em {
  margin-left: 4px;
  padding: 2px 6px;
  border: 1px solid #f3cdbb;
  border-radius: 4px;
  background: var(--bg-warm);
  color: var(--orange-deep);
  font-style: normal;
  font-size: 8px;
  letter-spacing: 0.1em;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  max-width: 560px;
  margin: 0;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}
.hero-stats > div { padding-right: 18px; }
.hero-stats > div + div {
  padding-left: 20px;
  border-left: 1px solid var(--line);
}
.hero-stats dt {
  margin-bottom: 3px;
  color: var(--text);
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: -0.01em;
}
.hero-stats dd {
  margin: 0;
  color: #86868b;
  font-size: 11px;
  letter-spacing: 0.02em;
}

/* phone */

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 640px;
  perspective: 1200px;
}

.phone {
  position: relative;
  z-index: 2;
  width: min(316px, 74vw);
  aspect-ratio: 9 / 19.1;
  transform-style: preserve-3d;
  animation: float 7.5s var(--ease) infinite;
  will-change: transform;
}
.phone::after {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 8% 2% -6%;
  border-radius: 50%;
  background: radial-gradient(ellipse, rgba(253, 86, 15, 0.16), transparent 68%);
  filter: blur(42px);
}
.phone-frame {
  position: absolute;
  inset: 0;
  padding: 9px;
  border-radius: 52px;
  background: linear-gradient(145deg, #d1d1d6 0%, #8e8e93 24%, #3a3a3c 54%, #c7c7cc 78%, #48484a 100%);
  box-shadow:
    0 42px 100px rgba(0, 0, 0, 0.18),
    0 0 0 1px rgba(0, 0, 0, 0.08),
    inset 0 0 0 1px rgba(255, 255, 255, 0.5),
    0 0 74px rgba(253, 86, 15, 0.08);
  transition: transform 0.24s var(--ease);
  will-change: transform;
}
.phone-frame::before,
.phone-frame::after {
  content: "";
  position: absolute;
  left: -2px;
  width: 3px;
  border-radius: 3px;
  background: linear-gradient(#c7c7cc, #8e8e93);
}
.phone-frame::before { top: 21%; height: 11%; }
.phone-frame::after { top: 35%; height: 16%; }

.phone-screen {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
  border-radius: 44px;
  background: #fff;
}
.phone-screen video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.phone-notch {
  position: absolute;
  z-index: 3;
  top: 15px;
  left: 50%;
  width: 84px;
  height: 23px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  background: #1d1d1f;
  transform: translateX(-50%);
}
.screen-glare {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background: linear-gradient(118deg, rgba(255, 255, 255, 0.18) 0%, transparent 28%, transparent 72%, rgba(255, 255, 255, 0.06) 100%);
  mix-blend-mode: screen;
}

.orbit {
  position: absolute;
  z-index: 1;
  width: 520px;
  height: 520px;
  border: 1px solid rgba(253, 86, 15, 0.2);
  border-radius: 50%;
  pointer-events: none;
}
.orbit::before {
  content: "";
  position: absolute;
  top: 13%;
  left: 8%;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 18px rgba(253, 86, 15, 0.45);
}
.orbit-a { animation: spin 26s linear infinite; }
.orbit-b {
  width: 620px;
  height: 620px;
  border-color: rgba(29, 29, 31, 0.07);
  border-style: dashed;
  animation: spin 44s linear infinite reverse;
}
.orbit-b::before {
  top: 68%;
  left: 92%;
  width: 4px;
  height: 4px;
  background: var(--orange-deep);
  box-shadow: 0 0 12px rgba(253, 86, 15, 0.3);
}

.chip {
  position: absolute;
  z-index: 4;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  color: var(--muted-strong);
  font-size: 11px;
  line-height: 1;
  white-space: nowrap;
}
.chip svg { color: var(--green); }
.chip-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 12px rgba(14, 159, 110, 0.45);
}
.chip-time {
  color: var(--orange-deep);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.04em;
}
.chip-1 { top: 14%; left: -8%; animation: float 6.4s var(--ease) infinite; }
.chip-2 { right: -10%; bottom: 24%; animation: float 8s var(--ease) -1.6s infinite; }
.chip-3 { bottom: 7%; left: -2%; animation: float 7.2s var(--ease) -3s infinite; }

.scroll-hint {
  position: absolute;
  z-index: 2;
  bottom: 26px;
  left: 50%;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #a1a1a6;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  transform: translateX(-50%);
}
.scroll-line {
  position: relative;
  width: 40px;
  height: 1px;
  overflow: hidden;
  background: var(--line-strong);
}
.scroll-line::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--orange);
  transform: translateX(-100%);
  animation: scan 2.6s ease-in-out infinite;
}

/* ---------- sections ---------- */

.section {
  position: relative;
  padding: clamp(96px, 11vw, 148px) 0;
}

.section-head {
  max-width: 780px;
  margin-bottom: clamp(42px, 5.5vw, 68px);
}
.kicker {
  margin: 0 0 18px;
  color: var(--orange-deep);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

h2 {
  margin: 0 0 18px;
  font-size: clamp(34px, 4.25vw, 58px);
  line-height: 1.08;
  letter-spacing: -0.045em;
}
.sub {
  max-width: 620px;
  margin: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.75;
}

/* ---------- download ---------- */

.download {
  border-top: 1px solid var(--line);
  background:
    radial-gradient(900px 500px at 50% 0%, rgba(253, 86, 15, 0.045), transparent 68%),
    var(--bg-soft);
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.dl-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 26px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s var(--ease), border-color 0.3s ease, box-shadow 0.3s ease;
}
.dl-card::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(460px circle at 50% 0%, rgba(253, 86, 15, 0.07), transparent 62%);
  opacity: 0;
  transition: opacity 0.35s ease;
}
.dl-card:hover {
  transform: translateY(-4px);
  border-color: #f0c7b3;
  box-shadow: var(--shadow-md);
}
.dl-card:hover::before { opacity: 1; }

.dl-head {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}
.dl-icon {
  display: grid;
  flex: 0 0 auto;
  place-items: center;
  width: 46px;
  height: 46px;
  border: 1px solid #f6d8c9;
  border-radius: 14px;
  background: var(--orange-soft);
  color: var(--orange-deep);
}
.dl-head h3 {
  margin: 0 0 2px;
  font-size: 18px;
  line-height: 1.2;
  letter-spacing: -0.02em;
}
.dl-meta {
  margin: 0;
  color: #86868b;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.03em;
}
.dl-tag {
  margin-left: auto;
  padding: 4px 8px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fbfbfd;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.qr-wrap {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 24px 0 18px;
}
.qr {
  width: 146px;
  height: 146px;
  padding: 11px;
  border-radius: 18px;
  background: #fff;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.1), 0 0 0 1px var(--line);
}
.qr svg { width: 100%; height: 100%; }
.qr-label {
  color: #86868b;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.dl-note {
  position: relative;
  z-index: 1;
  flex: 1;
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.65;
}

.is-soon { color: var(--muted); }
.is-soon .dl-icon {
  color: #86868b;
  background: var(--bg-soft);
  border-color: var(--line);
}
.is-soon .qr-wrap { justify-content: center; min-height: 180px; }

.soon-orbit {
  position: relative;
  display: grid;
  place-items: center;
  width: 146px;
  height: 146px;
  color: #86868b;
}
.soon-ring {
  position: absolute;
  inset: 8px;
  border: 1px dashed var(--line-strong);
  border-radius: 50%;
  animation: spin 22s linear infinite;
}
.soon-ring-2 {
  inset: 26px;
  border-style: solid;
  border-color: rgba(253, 86, 15, 0.2);
  animation-direction: reverse;
  animation-duration: 16s;
}

.fineprint {
  margin: 22px 0 0;
  color: #86868b;
  font-size: 11px;
  text-align: center;
}

/* ---------- features ---------- */

.features {
  border-top: 1px solid var(--line);
  background: #fff;
}

.bento {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 20px;
}

.feature {
  position: relative;
  grid-column: span 5;
  display: flex;
  flex-direction: column;
  min-height: 318px;
  padding: 32px;
  overflow: hidden;
  border: 1px solid transparent;
  border-radius: var(--radius);
  background: var(--bg-soft);
  transition: border-color 0.3s ease, transform 0.3s var(--ease), background 0.3s ease, box-shadow 0.3s ease;
}
.feature:hover {
  transform: translateY(-2px);
  border-color: var(--line);
  background: #f0f0f2;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.05);
}
.feature-wide {
  grid-column: span 7;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(190px, 0.82fr);
  align-items: center;
  gap: 24px;
}

.feature-top {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}
.feature-num {
  color: var(--orange-deep);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.12em;
}
.feature-icon {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  color: var(--text);
}
.feature h3 {
  margin: 0 0 10px;
  font-size: 25px;
  line-height: 1.2;
  letter-spacing: -0.03em;
}
.feature p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

.feature-visual {
  position: relative;
  margin-top: auto;
  padding-top: 26px;
  min-height: 116px;
}
.feature-wide .feature-visual {
  margin-top: 0;
  padding-top: 0;
  min-height: 180px;
}

/* memory */
.mem-stack {
  position: absolute;
  inset: 4px 0 0 auto;
  width: min(100%, 300px);
  display: flex;
  flex-direction: column;
  gap: 7px;
}
.mem-row {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 11px 13px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: #fff;
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.06);
  color: var(--muted-strong);
  font-family: var(--font-mono);
  font-size: 10px;
  transform: translateX(0) rotate(-0.6deg);
}
.mem-row:nth-child(2) { transform: translateX(-13px) rotate(0.7deg); opacity: 0.92; }
.mem-row:nth-child(3) { transform: translateX(-26px) rotate(-1deg); opacity: 0.84; }
.mem-dot {
  flex: 0 0 auto;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 10px rgba(253, 86, 15, 0.35);
}
.mem-line {
  flex: 1;
  height: 1px;
  margin-left: 6px;
  background: linear-gradient(90deg, rgba(253, 86, 15, 0.35), transparent);
}

/* reminder */
.timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 15px;
  margin-left: 4px;
  padding-left: 20px;
}
.timeline::before {
  content: "";
  position: absolute;
  top: 5px;
  bottom: 5px;
  left: 4px;
  width: 1px;
  background: linear-gradient(to bottom, var(--line), rgba(253, 86, 15, 0.45), var(--line));
}
.tl-item {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  color: #86868b;
  font-size: 11px;
}
.tl-dot {
  position: absolute;
  left: -20px;
  width: 9px;
  height: 9px;
  border: 1px solid #c7c7cc;
  border-radius: 50%;
  background: #fff;
}
.tl-time {
  color: #a1a1a6;
  font-family: var(--font-mono);
  font-size: 9px;
}
.tl-item.is-done { color: var(--muted); }
.tl-item.is-done .tl-dot { background: #a1a1a6; border-color: #a1a1a6; }
.tl-item.is-now {
  padding: 8px 10px;
  margin: -8px -10px;
  border: 1px solid #f5cdb9;
  border-radius: 9px;
  background: var(--orange-soft);
  color: #7a2e0e;
}
.tl-item.is-now .tl-dot {
  left: -21px;
  top: 50%;
  border-color: var(--orange);
  background: var(--orange);
  box-shadow: 0 0 0 4px rgba(253, 86, 15, 0.12), 0 0 16px rgba(253, 86, 15, 0.3);
  transform: translateY(-50%);
}
.tl-item.is-now .tl-time { color: var(--orange-deep); }

/* console */
.console {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.05);
}
.console-bar {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 8px 10px;
  border-bottom: 1px solid var(--line);
  background: #fbfbfd;
}
.console-bar i {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--line-strong);
}
.console-bar i:first-child { background: var(--orange); }
.console-bar span {
  margin-left: 6px;
  color: #86868b;
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.07em;
}
.console-body {
  padding: 10px 12px 12px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 9px;
  line-height: 1.95;
}
.console-body b { color: var(--orange-deep); font-weight: 500; }
.console-body span { color: var(--muted-strong); }
.console-body em { color: var(--green); font-style: normal; }
.console-cursor {
  color: var(--orange);
  animation: blink 1.15s step-end infinite;
}

/* local */
.local-viz {
  position: relative;
  display: grid;
  place-items: center;
  width: 190px;
  height: 190px;
  margin: 0 auto;
}
.lv-ring {
  position: absolute;
  border: 1px solid rgba(253, 86, 15, 0.18);
  border-radius: 50%;
}
.lv-ring-a { inset: 12px; animation: spin 20s linear infinite; border-style: dashed; }
.lv-ring-b { inset: 34px; border-color: var(--line); animation: spin 30s linear infinite reverse; }
.lv-ring-c { inset: 56px; border-color: rgba(253, 86, 15, 0.3); }
.lv-core {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 62px;
  height: 62px;
  border: 1px solid #f0c7b3;
  border-radius: 50%;
  background: radial-gradient(circle at 40% 30%, #fff, #fff3ea 70%);
  box-shadow: 0 0 30px rgba(253, 86, 15, 0.12);
  color: var(--text);
}
.lv-label {
  position: absolute;
  color: #a1a1a6;
  font-family: var(--font-mono);
  font-size: 7px;
  letter-spacing: 0.14em;
}
.lv-label-a { top: 2px; left: 50%; transform: translateX(-50%); }
.lv-label-b { left: 0; bottom: 26px; }
.lv-label-c { right: 0; bottom: 26px; }

/* ---------- scenes ---------- */

.scenes {
  border-top: 1px solid var(--line);
  background:
    radial-gradient(800px 500px at 15% 45%, rgba(253, 86, 15, 0.045), transparent 68%),
    var(--bg-soft);
}
.scenes-inner {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  align-items: center;
  gap: clamp(36px, 6vw, 82px);
}
.scenes-copy h2 { margin-bottom: 20px; }

.chat-demo {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 26px;
  background: #fff;
  box-shadow: 0 22px 60px rgba(0, 0, 0, 0.08);
}
.chat-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
  background: #fbfbfd;
}
.chat-brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 500;
}
.chat-brand img { border-radius: 7px; }
.chat-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #86868b;
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.12em;
}
.chat-status i {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 9px rgba(14, 159, 110, 0.35);
}
.chat-body {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 22px 18px 24px;
}
.msg {
  max-width: 88%;
  margin: 0;
  padding: 11px 14px;
  border-radius: 15px;
  font-size: 13px;
  line-height: 1.55;
}
.msg.user {
  align-self: flex-end;
  border: 1px solid #f6d2c0;
  border-bottom-right-radius: 4px;
  background: var(--orange-soft);
  color: #7a2e0e;
}
.msg.ai {
  align-self: flex-start;
  border: 1px solid var(--line);
  border-bottom-left-radius: 4px;
  background: var(--bg-soft);
  color: var(--muted-strong);
}
.msg .ok {
  margin-right: 4px;
  color: var(--green);
  font-family: var(--font-mono);
}
.msg-meta {
  display: block;
  margin-top: 6px;
  color: #a1a1a6;
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ---------- about ---------- */

.about { padding-top: 12px; background: #fff; }
.about-card {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
  gap: clamp(30px, 5vw, 64px);
  padding: clamp(36px, 5vw, 64px);
  overflow: hidden;
  border: 1px solid #f2d8ca;
  border-radius: 34px;
  background:
    radial-gradient(620px 380px at 8% 10%, rgba(253, 86, 15, 0.1), transparent 62%),
    linear-gradient(150deg, var(--bg-warm), #fff);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.04);
}
.about-card::after {
  content: "";
  position: absolute;
  right: -80px;
  bottom: -140px;
  width: 420px;
  height: 420px;
  border: 1px solid rgba(253, 86, 15, 0.12);
  border-radius: 50%;
  pointer-events: none;
}
.about-copy h2 { margin-bottom: 20px; }
.about-points {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 22px;
}
.point {
  display: flex;
  gap: 14px;
  padding-bottom: 20px;
  border-bottom: 1px solid #f0e2da;
}
.point:last-child { padding-bottom: 0; border-bottom: 0; }
.point-num {
  flex: 0 0 auto;
  padding-top: 2px;
  color: var(--orange-deep);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.1em;
}
.point h3 {
  margin: 0 0 3px;
  font-size: 16px;
  letter-spacing: -0.01em;
}
.point p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.65;
}

/* ---------- footer ---------- */

.footer {
  padding: 46px 0 40px;
  border-top: 1px solid var(--line);
  background: var(--bg-soft);
}
.footer-inner {
  display: flex;
  align-items: center;
  gap: 28px;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 11px;
}
.footer-brand img { border-radius: 10px; }
.footer-brand div {
  display: flex;
  flex-direction: column;
  gap: 1px;
}
.footer-brand strong {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
}
.footer-brand span {
  color: var(--muted);
  font-size: 10px;
}
.footer-links {
  display: flex;
  gap: 20px;
  margin-left: auto;
  color: var(--muted);
  font-size: 11px;
}
.footer-links a { transition: color 0.2s ease; }
.footer-links a:hover { color: var(--text); }
.footer-copy {
  margin: 0;
  color: #a1a1a6;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.03em;
}

/* ---------- motion ---------- */

.js .reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.75s var(--ease), transform 0.75s var(--ease);
  transition-delay: var(--d, 0s);
}
.js .reveal.is-visible {
  opacity: 1;
  transform: none;
}

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(253, 86, 15, 0.4); }
  70% { box-shadow: 0 0 0 8px rgba(253, 86, 15, 0); }
  100% { box-shadow: 0 0 0 0 rgba(253, 86, 15, 0); }
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-9px); }
}
@keyframes spin {
  to { transform: rotate(360deg); }
}
@keyframes scan {
  0%, 100% { transform: translateX(-100%); }
  45%, 55% { transform: translateX(100%); }
}
@keyframes blink {
  50% { opacity: 0; }
}

/* ---------- responsive ---------- */

@media (max-width: 1080px) {
  .hero-inner { grid-template-columns: minmax(0, 1fr) minmax(320px, 0.82fr); }
  .hero-visual { min-height: 570px; }
  .orbit { width: 440px; height: 440px; }
  .orbit-b { width: 520px; height: 520px; }
  .chip-1 { left: -2%; }
  .chip-2 { right: -3%; }
  .feature-wide { grid-template-columns: minmax(0, 1fr) minmax(170px, 0.72fr); }
}

@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; gap: 42px; }
  .hero-copy { max-width: 660px; }
  .hero-visual { min-height: 590px; margin-top: 6px; }
  .hero { padding-top: 138px; }
  .scroll-hint { display: none; }
  .download-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .download-grid > :last-child { grid-column: 1 / -1; }
  .bento { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .feature,
  .feature-wide { grid-column: span 1; display: flex; }
  .feature-wide .feature-visual { margin-top: auto; padding-top: 26px; min-height: 116px; }
  .scenes-inner { grid-template-columns: 1fr; gap: 36px; }
  .about-card { grid-template-columns: 1fr; }
  .footer-inner { flex-wrap: wrap; }
  .footer-links { margin-left: auto; }
  .footer-copy { width: 100%; }
}

@media (max-width: 760px) {
  .nav-links { display: none; }
  .nav-actions { margin-left: auto; }
}

@media (max-width: 640px) {
  .wrap,
  .nav-inner { width: min(100% - 32px, 1180px); }
  .nav-inner { min-height: 68px; gap: 14px; }
  .brand-cn { display: none; }
  .nav-actions .btn-small { display: none; }
  .hero { padding: 96px 0 56px; }
  .hero-inner { gap: 30px; }
  .eyebrow { margin-bottom: 20px; }
  h1 { font-size: clamp(38px, 11.2vw, 52px); margin-bottom: 18px; }
  html[lang="en"] h1 { font-size: clamp(31px, 8.8vw, 42px); }
  .lede { margin-bottom: 24px; font-size: 15px; }
  .hero-cta { margin-bottom: 20px; }
  .hero-cta .btn { flex: 1 1 190px; }
  .platform-row { margin-bottom: 26px; }
  .hero-stats { padding-top: 18px; }
  .hero-visual { min-height: 480px; }
  .phone { width: min(268px, 70vw); }
  .orbit { width: 360px; height: 360px; }
  .orbit-b { width: 430px; height: 430px; }
  .chip-1 { top: 10%; left: 0; }
  .chip-2 { right: 0; bottom: 22%; }
  .chip-3 { bottom: 5%; left: 3%; }
  .hero-stats dt { font-size: 13px; }
  .hero-stats dd { font-size: 10px; }
  .section { padding: 72px 0; }
  .download-grid,
  .bento { grid-template-columns: 1fr; }
  .download-grid > :last-child { grid-column: auto; }
  .dl-card { padding: 20px; }
  .feature { min-height: auto; padding: 26px; }
  .feature h3 { font-size: 22px; }
  .feature-wide { grid-template-columns: 1fr; display: flex; }
  .feature-wide .feature-visual { padding-top: 26px; min-height: 116px; }
  .mem-stack { position: relative; inset: auto; width: 100%; }
  .local-viz { width: 170px; height: 170px; }
  .msg { max-width: 94%; }
  .about { padding-top: 0; }
  .about-card { border-radius: 26px; }
  .footer-inner { align-items: flex-start; gap: 18px; }
  .footer-links { width: 100%; margin-left: 0; }
  .footer-copy { margin-top: 2px; }
}

@media (max-width: 400px) {
  .eyebrow { font-size: 8px; letter-spacing: 0.1em; }
  .eyebrow-ver { display: none; }
  .platform-row { gap: 7px; font-size: 8px; }
  .hero-stats > div + div { padding-left: 12px; }
  .hero-stats > div { padding-right: 10px; }
  .chip { font-size: 9px; padding: 8px 9px; }
  .chip-1 { left: -2%; }
  .chip-2 { right: -2%; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .js .reveal { opacity: 1; transform: none; }
}