@font-face {
  font-family: "Orbitron";
  src: url("assets/fonts/Orbitron-Bold.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "ZCOOL Brand";
  src: url("assets/fonts/ZCOOL-brand.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

:root {
  --bg: #F3F8F6;
  --paper: #FBFDFC;
  --ink: #0C2F2A;
  --ink-soft: #3D5D57;
  --muted: #6D8781;
  --mint: #2AAE83;
  --mint-deep: #16745F;
  --mint-soft: #DDF4EA;
  --line: rgba(16, 63, 56, 0.10);
  --line-strong: rgba(16, 63, 56, 0.16);
  --shadow: 0 24px 60px rgba(21, 86, 73, 0.12);
  --font-display: "ZCOOL Brand", "STKaiti", "KaiTi", serif;
  --font-ui: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-en: "Orbitron", "Avenir Next", sans-serif;
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: hidden;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-ui);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.lightbox-open {
  overflow: hidden;
}

.scroll-progress {
  position: fixed;
  z-index: 60;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--mint), #77D7B7);
  transform: scaleX(0);
  transform-origin: 0 50%;
  pointer-events: none;
}

a {
  color: inherit;
}

button {
  font: inherit;
}

img {
  max-width: 100%;
}

.page-glow {
  position: fixed;
  z-index: -1;
  pointer-events: none;
  border-radius: 50%;
  filter: blur(10px);
}

.page-glow-a {
  top: -320px;
  right: -180px;
  width: 760px;
  height: 760px;
  background: radial-gradient(circle, rgba(131, 223, 193, 0.36), rgba(131, 223, 193, 0) 68%);
}

.page-glow-b {
  top: 520px;
  left: -360px;
  width: 760px;
  height: 760px;
  background: radial-gradient(circle, rgba(176, 221, 241, 0.34), rgba(176, 221, 241, 0) 70%);
}

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  z-index: 40;
  top: 0;
  padding: 16px 22px 0;
  transition: padding 220ms ease;
}

.site-header.is-scrolled {
  padding-top: 10px;
}

.header-inner {
  display: flex;
  width: min(var(--max), 100%);
  min-height: 66px;
  align-items: center;
  gap: 24px;
  margin: 0 auto;
  padding: 10px 12px 10px 18px;
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 22px;
  background: rgba(251, 253, 252, 0.76);
  box-shadow: 0 10px 34px rgba(26, 87, 74, 0.07);
  -webkit-backdrop-filter: blur(22px) saturate(150%);
  backdrop-filter: blur(22px) saturate(150%);
  transition: box-shadow 220ms ease, background 220ms ease;
}

.site-header.is-scrolled .header-inner {
  background: rgba(251, 253, 252, 0.90);
  box-shadow: 0 14px 40px rgba(26, 87, 74, 0.10);
}

.brand {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 7px;
  color: var(--ink);
  text-decoration: none;
}

.brand-mark {
  width: 36px;
  height: 36px;
  margin-right: 1px;
  border-radius: 11px;
  object-fit: cover;
}

.brand-cn {
  font-family: var(--font-display);
  font-size: 27px;
  font-weight: 400;
  line-height: 1;
  letter-spacing: 1px;
}

.brand-en {
  margin-left: 1px;
  font-family: var(--font-en);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.2px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}

.site-nav a {
  padding: 9px 13px;
  border-radius: 999px;
  color: var(--ink-soft);
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
  transition: background 160ms ease, color 160ms ease;
}

.site-nav a:hover {
  background: rgba(42, 174, 131, 0.09);
  color: var(--mint-deep);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.header-download {
  padding: 11px 18px;
  border-radius: 999px;
  background: var(--ink);
  color: #F2FCF8;
  font-size: 12px;
  font-weight: 600;
  text-decoration: none;
  transition: transform 160ms ease, background 160ms ease;
}

.header-download:hover {
  background: #174C43;
  transform: translateY(-1px);
}

.header-download-short {
  display: none;
}

.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: transparent;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 16px;
  height: 1.5px;
  margin: 4px auto;
  border-radius: 99px;
  background: var(--ink);
  transition: transform 180ms ease;
}

/* ---------- Hero ---------- */

.hero-shell {
  width: min(var(--max), calc(100% - 44px));
  margin: 0 auto;
  padding: 84px 0 0;
  overflow: hidden;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.03fr) minmax(360px, 0.97fr);
  align-items: center;
  gap: 30px;
  min-height: 620px;
}

.hero-copy {
  animation: hero-copy-in 900ms cubic-bezier(0.2, 0.7, 0.25, 1) both;
}

.hero-visual {
  animation: hero-visual-in 1000ms cubic-bezier(0.2, 0.7, 0.25, 1) 100ms both;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--mint-deep);
  font-family: var(--font-en);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
}

.eyebrow-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 0 5px rgba(42, 174, 131, 0.10);
}

.hero h1 {
  max-width: 680px;
  margin: 24px 0 0;
  font-family: var(--font-display);
  font-size: clamp(48px, 6.6vw, 84px);
  font-weight: 400;
  line-height: 0.99;
  letter-spacing: 1px;
  color: var(--ink);
}

.hero h1 span {
  color: var(--mint-deep);
}

.hero-lead {
  max-width: 520px;
  margin: 24px 0 0;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.85;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 0 22px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  line-height: 1;
  text-decoration: none;
  transition: transform 170ms ease, box-shadow 170ms ease, background 170ms ease;
}

.button svg {
  width: 18px;
  height: 18px;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  background: var(--ink);
  color: #F4FCF8;
  box-shadow: 0 12px 28px rgba(12, 47, 42, 0.20);
}

.button-primary:hover {
  background: #174C43;
}

.button-quiet {
  border: 1px solid var(--line-strong);
  color: var(--ink-soft);
  background: rgba(255, 255, 255, 0.35);
}

.button-quiet:hover {
  background: rgba(255, 255, 255, 0.75);
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin-top: 25px;
  color: var(--muted);
  font-size: 10.5px;
  letter-spacing: 0.2px;
}

.hero-meta span {
  display: inline-flex;
  align-items: center;
}

.hero-meta span + span::before {
  width: 3px;
  height: 3px;
  margin: 0 9px;
  border-radius: 50%;
  background: #A3BBB4;
  content: "";
}

.hero-visual {
  position: relative;
  display: flex;
  min-height: 650px;
  align-items: center;
  justify-content: center;
  isolation: isolate;
}

.hero-halo {
  position: absolute;
  width: 520px;
  height: 520px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(100, 210, 174, 0.33), rgba(100, 210, 174, 0) 68%);
  filter: blur(4px);
}

.hero-ring {
  position: absolute;
  border: 1px solid rgba(42, 174, 131, 0.17);
  border-radius: 50%;
  transform: rotate(-18deg);
}

.hero-ring-a {
  width: 470px;
  height: 470px;
}

.hero-ring-b {
  width: 580px;
  height: 580px;
  border-color: rgba(42, 174, 131, 0.08);
}

.phone {
  position: relative;
  display: block;
  width: 326px;
  aspect-ratio: 1200 / 2450;
  padding: 9px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 48px;
  background: linear-gradient(145deg, #314A45 0%, #0A1D1A 26%, #06110F 100%);
  box-shadow:
    0 42px 70px rgba(5, 34, 28, 0.24),
    0 12px 24px rgba(5, 34, 28, 0.16),
    inset 0 0 0 1px rgba(255, 255, 255, 0.12);
  cursor: zoom-in;
  -webkit-tap-highlight-color: transparent;
  transition: transform 260ms ease, box-shadow 260ms ease;
}

.phone:hover {
  box-shadow:
    0 48px 84px rgba(5, 34, 28, 0.28),
    0 14px 26px rgba(5, 34, 28, 0.18),
    inset 0 0 0 1px rgba(255, 255, 255, 0.15);
}

.phone-camera {
  position: absolute;
  z-index: 3;
  top: 16px;
  left: 50%;
  width: 76px;
  height: 18px;
  border-radius: 999px;
  background: #07110F;
  transform: translateX(-50%);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.06);
}

.phone-screen {
  display: block;
  width: 100%;
  height: 100%;
  overflow: hidden;
  border-radius: 39px;
  background: #F6FAF8;
}

.phone-screen img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}

.hero-phone {
  z-index: 2;
  transform: rotate(2.5deg) translateY(10px);
}

.hero-phone:hover {
  transform: rotate(2.5deg) translateY(4px) scale(1.012);
}

.phone-video {
  aspect-ratio: 720 / 1586;
  cursor: default;
}

.live-video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  cursor: pointer;
}

.hero-chip {
  position: absolute;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 14px;
  border: 1px solid rgba(255, 255, 255, 0.88);
  border-radius: 16px;
  background: rgba(251, 253, 252, 0.78);
  box-shadow: 0 16px 38px rgba(11, 58, 49, 0.13);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  backdrop-filter: blur(18px) saturate(150%);
  animation: chip-float 5.5s ease-in-out infinite;
}

.hero-chip-live {
  top: 16%;
  left: -22px;
}

.hero-chip-cpu {
  right: -32px;
  bottom: 18%;
  animation-delay: -2.4s;
}

.chip-pulse {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 0 5px rgba(42, 174, 131, 0.13);
}

.hero-chip strong,
.hero-chip small {
  display: block;
}

.hero-chip strong {
  font-size: 11px;
  font-weight: 700;
  line-height: 1.2;
}

.hero-chip small {
  margin-top: 2px;
  color: var(--muted);
  font-size: 9px;
  line-height: 1.2;
}

.chip-icon {
  display: grid;
  width: 28px;
  height: 28px;
  place-items: center;
  border-radius: 9px;
  background: var(--mint-soft);
  color: var(--mint-deep);
  font-size: 15px;
}

.hero-foot {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 30px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.hero-foot-item {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 22px 18px;
  border-right: 1px solid var(--line);
}

.hero-foot-item:first-child {
  padding-left: 0;
}

.hero-foot-item:last-child {
  border-right: 0;
}

.hero-foot-item strong {
  font-family: var(--font-en);
  font-size: 17px;
  letter-spacing: -0.2px;
}

.hero-foot-item .hero-foot-text {
  font-family: var(--font-ui);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.6px;
}

.hero-foot-item span {
  color: var(--muted);
  font-size: 10px;
}

/* ---------- Sections ---------- */

.section {
  width: min(var(--max), calc(100% - 44px));
  margin: 0 auto;
  padding: 120px 0 0;
}

.section-heading {
  max-width: 660px;
}

.section-heading h2,
.detail-intro h2 {
  margin: 17px 0 0;
  font-family: var(--font-display);
  font-size: clamp(36px, 4.5vw, 56px);
  font-weight: 400;
  line-height: 1.12;
  letter-spacing: 0.6px;
}

.section-heading p {
  max-width: 480px;
  margin: 17px 0 0;
  color: var(--ink-soft);
  font-size: 13.5px;
  line-height: 1.8;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 46px;
}

.feature-card {
  position: relative;
  display: flex;
  min-height: 240px;
  flex-direction: column;
  padding: 25px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.78);
  border-radius: 26px;
  background: rgba(251, 253, 252, 0.66);
  box-shadow: 0 14px 34px rgba(28, 94, 79, 0.055);
  transition: transform 220ms ease, box-shadow 220ms ease, background 220ms ease;
}

.feature-card:hover {
  background: rgba(255, 255, 255, 0.90);
  box-shadow: 0 24px 46px rgba(28, 94, 79, 0.10);
  transform: translateY(-4px);
}

.feature-card-wide {
  grid-column: span 2;
  flex-direction: row;
  align-items: center;
  gap: 22px;
  background:
    radial-gradient(120% 130% at 100% 0%, rgba(201, 244, 229, 0.65), rgba(201, 244, 229, 0) 55%),
    rgba(251, 253, 252, 0.78);
}

.feature-card-accent {
  background:
    radial-gradient(120% 140% at 100% 0%, rgba(174, 231, 248, 0.55), rgba(174, 231, 248, 0) 56%),
    rgba(251, 253, 252, 0.76);
}

.feature-icon {
  display: grid;
  width: 43px;
  height: 43px;
  flex: 0 0 43px;
  place-items: center;
  border-radius: 14px;
  background: var(--mint-soft);
  color: var(--mint-deep);
}

.feature-icon svg {
  width: 25px;
  height: 25px;
}

.feature-kicker {
  display: block;
  margin-top: 19px;
  color: var(--mint-deep);
  font-family: var(--font-en);
  font-size: 8.5px;
  font-weight: 700;
  letter-spacing: 1.1px;
}

.feature-card h3 {
  margin: 8px 0 0;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.2px;
}

.feature-card p {
  max-width: 300px;
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 11.5px;
  line-height: 1.75;
}

.feature-copy {
  position: relative;
  z-index: 2;
  max-width: 370px;
}

.feature-copy .feature-kicker {
  margin-top: 0;
}

.feature-wave {
  position: absolute;
  right: 24px;
  bottom: 22px;
  display: flex;
  height: 56px;
  align-items: flex-end;
  gap: 5px;
  opacity: 0.62;
}

.feature-wave span {
  width: 4px;
  border-radius: 99px;
  background: linear-gradient(to top, var(--mint), rgba(42, 174, 131, 0.18));
  animation: wave 1.5s ease-in-out infinite alternate;
}

.feature-wave span:nth-child(1) { height: 18%; animation-delay: -0.2s; }
.feature-wave span:nth-child(2) { height: 36%; animation-delay: -0.7s; }
.feature-wave span:nth-child(3) { height: 25%; animation-delay: -1.1s; }
.feature-wave span:nth-child(4) { height: 55%; animation-delay: -0.4s; }
.feature-wave span:nth-child(5) { height: 42%; animation-delay: -1.4s; }
.feature-wave span:nth-child(6) { height: 72%; animation-delay: -0.9s; }
.feature-wave span:nth-child(7) { height: 50%; animation-delay: -0.1s; }
.feature-wave span:nth-child(8) { height: 84%; animation-delay: -1.2s; }
.feature-wave span:nth-child(9) { height: 62%; animation-delay: -0.6s; }
.feature-wave span:nth-child(10) { height: 36%; animation-delay: -1.5s; }
.feature-wave span:nth-child(11) { height: 48%; animation-delay: -0.3s; }
.feature-wave span:nth-child(12) { height: 22%; animation-delay: -1.0s; }

/* ---------- Live ---------- */

.live-section {
  width: min(var(--max), calc(100% - 44px));
  margin: 120px auto 0;
  overflow: hidden;
  border-radius: 42px;
  background:
    radial-gradient(100% 80% at 50% -20%, rgba(61, 173, 139, 0.22), rgba(61, 173, 139, 0) 58%),
    linear-gradient(145deg, #0A2A25 0%, #103C34 52%, #0B2D28 100%);
  box-shadow: 0 34px 80px rgba(5, 37, 30, 0.18);
  color: #EDF9F4;
}

.live-inner {
  position: relative;
  padding: 72px 56px 58px;
}

.live-inner::before {
  position: absolute;
  top: -140px;
  right: -160px;
  width: 520px;
  height: 520px;
  border: 1px solid rgba(157, 235, 210, 0.12);
  border-radius: 50%;
  content: "";
}

.live-inner::after {
  position: absolute;
  top: -60px;
  right: -80px;
  width: 380px;
  height: 380px;
  border: 1px solid rgba(157, 235, 210, 0.09);
  border-radius: 50%;
  content: "";
}

.eyebrow-light {
  color: #9BE4CC;
}

.live-heading {
  position: relative;
  z-index: 2;
  max-width: 600px;
}

.live-heading h2 {
  margin: 18px 0 0;
  font-family: var(--font-display);
  font-size: clamp(38px, 4.7vw, 58px);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: 0.5px;
}

.live-heading p {
  max-width: 480px;
  margin: 17px 0 0;
  color: rgba(222, 246, 237, 0.62);
  font-size: 12.5px;
  line-height: 1.8;
}

.live-device-meta {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-top: 20px;
  padding: 7px 11px;
  border: 1px solid rgba(158, 232, 210, 0.16);
  border-radius: 999px;
  color: rgba(220, 246, 236, 0.56);
  font-size: 9px;
  letter-spacing: 0.2px;
}

.live-device-meta i {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #7FE1BE;
  box-shadow: 0 0 0 4px rgba(127, 225, 190, 0.10);
}

.live-stage {
  position: relative;
  z-index: 2;
  display: grid;
  width: min(760px, 100%);
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: stretch;
  gap: 24px;
  margin: 48px auto 0;
}

.live-shot {
  display: flex;
  min-width: 0;
  flex-direction: column;
  align-items: center;
  margin: 0;
  text-align: center;
}

.live-shot .phone {
  width: min(278px, 100%);
  margin: 0 auto;
  box-shadow:
    0 34px 60px rgba(0, 0, 0, 0.38),
    0 0 0 1px rgba(255, 255, 255, 0.08);
}

.live-shot-left .phone {
  transform: rotate(-3.4deg);
}

.live-shot-right .phone {
  transform: rotate(2.6deg);
}

.live-shot .phone:hover {
  transform: rotate(0) translateY(-4px) scale(1.012);
}

.live-shot figcaption {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  margin-top: 18px;
  color: rgba(220, 246, 236, 0.55);
  font-size: 10px;
  letter-spacing: 0.2px;
}

.live-shot figcaption span {
  font-family: var(--font-en);
  color: #7ED7BB;
  font-size: 8px;
}

.live-status-card {
  position: relative;
  display: flex;
  width: min(278px, 100%);
  min-height: 546px;
  flex: 1;
  flex-direction: column;
  padding: 23px 19px 18px;
  overflow: hidden;
  border: 1px solid rgba(194, 242, 226, 0.19);
  border-radius: 30px;
  background:
    radial-gradient(110% 90% at 100% 0%, rgba(88, 202, 165, 0.22), rgba(88, 202, 165, 0) 55%),
    rgba(22, 75, 63, 0.54);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.12), 0 28px 52px rgba(0, 0, 0, 0.20);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}

.live-status-card::after {
  position: absolute;
  right: -74px;
  bottom: -96px;
  width: 230px;
  height: 230px;
  border: 1px solid rgba(151, 235, 208, 0.16);
  border-radius: 50%;
  content: "";
}

.live-status-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  color: rgba(191, 240, 223, 0.54);
  font-family: var(--font-en);
  font-size: 8px;
  letter-spacing: 1.2px;
}

.live-status-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 8px;
  border: 1px solid rgba(145, 236, 205, 0.22);
  border-radius: 999px;
  color: #A9EFD6;
  font-family: var(--font-ui);
  font-size: 8px;
  letter-spacing: 0;
}

.live-status-pill i {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #7FE1BE;
  box-shadow: 0 0 0 4px rgba(127, 225, 190, 0.10);
}

.live-status-icon {
  display: grid;
  width: 58px;
  height: 58px;
  margin-top: 48px;
  place-items: center;
  border: 1px solid rgba(168, 240, 216, 0.22);
  border-radius: 18px;
  background: rgba(130, 229, 195, 0.11);
  color: #9BE4CC;
}

.live-status-icon svg {
  width: 31px;
  height: 31px;
}

.live-status-card h3 {
  margin: 18px 0 0;
  font-family: var(--font-display);
  font-size: 31px;
  font-weight: 400;
  line-height: 1.03;
  letter-spacing: 0.4px;
  color: #EAF9F3;
}

.live-status-card > p {
  max-width: 220px;
  margin: 12px 0 0;
  color: rgba(218, 245, 235, 0.54);
  font-size: 9.5px;
  line-height: 1.7;
}

.live-status-rows {
  margin-top: auto;
  padding-top: 18px;
}

.live-status-rows div {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 9px 0;
  border-bottom: 1px solid rgba(184, 238, 220, 0.10);
  font-size: 8.8px;
}

.live-status-rows span {
  color: rgba(211, 242, 231, 0.44);
}

.live-status-rows strong {
  color: #B5EEDB;
  font-size: 9px;
  font-weight: 600;
}

.live-status-foot {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 13px;
  color: rgba(183, 234, 216, 0.52);
  font-size: 8px;
}

.live-status-foot span {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #7FE1BE;
}

.live-shot-status figcaption {
  color: rgba(190, 239, 222, 0.56);
}

/* ---------- Detail ---------- */

.detail-section {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: 40px;
  align-items: end;
}

.detail-intro h2 {
  font-size: clamp(34px, 4.2vw, 50px);
}

.detail-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 10px;
}

.detail-card {
  display: flex;
  min-height: 250px;
  flex-direction: column;
  justify-content: flex-end;
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: 24px;
  background: rgba(251, 253, 252, 0.72);
  box-shadow: 0 14px 32px rgba(28, 94, 79, 0.05);
}

.detail-card-main {
  background:
    radial-gradient(100% 120% at 100% 0%, rgba(201, 244, 229, 0.62), rgba(201, 244, 229, 0) 60%),
    rgba(251, 253, 252, 0.78);
}

.detail-number {
  font-family: var(--font-en);
  font-size: 42px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -2px;
  color: var(--mint-deep);
}

.detail-number span {
  margin-left: 3px;
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0;
  color: var(--muted);
}

.detail-label {
  margin-top: 10px;
  font-size: 12px;
  font-weight: 700;
}

.detail-card p {
  margin: 7px 0 0;
  color: var(--muted);
  font-size: 10.5px;
  line-height: 1.7;
}

/* ---------- Download ---------- */

.download-section {
  width: min(var(--max), calc(100% - 44px));
  margin: 120px auto 0;
}

.download-card {
  display: grid;
  grid-template-columns: 1.18fr 0.82fr;
  gap: 36px;
  padding: 54px;
  overflow: hidden;
  border-radius: 36px;
  background:
    radial-gradient(100% 120% at 100% 0%, rgba(74, 181, 147, 0.28), rgba(74, 181, 147, 0) 55%),
    linear-gradient(140deg, #0B2D28, #123E35 60%, #0C302A);
  box-shadow: 0 32px 76px rgba(6, 44, 35, 0.18);
  color: #F1FBF7;
}

.download-copy h2 {
  margin: 18px 0 0;
  font-family: var(--font-display);
  font-size: clamp(40px, 5.1vw, 62px);
  font-weight: 400;
  line-height: 1.04;
  letter-spacing: 0.6px;
}

.download-copy p {
  max-width: 390px;
  margin: 17px 0 0;
  color: rgba(222, 246, 237, 0.64);
  font-size: 13px;
  line-height: 1.8;
}

.download-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 26px;
}

.button-light {
  background: #E8FBF3;
  color: #0D3A31;
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.15);
}

.button-light:hover {
  background: #FFFFFF;
}

.button-dark-ghost {
  border: 1px solid rgba(201, 242, 229, 0.25);
  color: #D9F5EB;
  background: rgba(255, 255, 255, 0.04);
}

.button-dark-ghost:hover {
  background: rgba(255, 255, 255, 0.09);
}

.download-meta {
  align-self: center;
  padding: 19px;
  border: 1px solid rgba(201, 242, 229, 0.14);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.045);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.download-meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 2px;
  border-bottom: 1px solid rgba(201, 242, 229, 0.10);
  font-size: 10px;
}

.download-meta-row span {
  color: rgba(219, 245, 236, 0.48);
}

.download-meta-row strong {
  font-size: 11px;
  font-weight: 600;
}

.download-note {
  display: flex;
  gap: 8px;
  margin-top: 15px;
  color: rgba(219, 245, 236, 0.42);
  font-size: 9px;
  line-height: 1.6;
}

.download-note-dot {
  flex: 0 0 5px;
  width: 5px;
  height: 5px;
  margin-top: 4px;
  border-radius: 50%;
  background: #7FE1BE;
}

/* ---------- Support ---------- */

.support-section {
  padding-bottom: 100px;
}

.support-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  padding-top: 38px;
  border-top: 1px solid var(--line);
}

.author-line {
  display: flex;
  align-items: center;
  gap: 13px;
  margin-top: 21px;
}

.author-line img {
  width: 64px;
  height: 64px;
  border: 2px solid #FFFFFF;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 10px 24px rgba(21, 86, 73, 0.13);
}

.author-line strong,
.author-line span {
  display: block;
}

.author-line strong {
  font-size: 15px;
  font-weight: 700;
}

.author-line span {
  margin-top: 3px;
  color: var(--muted);
  font-size: 10px;
}

.support-author > p {
  max-width: 400px;
  margin: 17px 0 0;
  color: var(--ink-soft);
  font-size: 11.5px;
  line-height: 1.8;
}

.social-links {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 15px;
}

.social-links a {
  padding: 7px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 9.5px;
  text-decoration: none;
  transition: border-color 160ms ease, color 160ms ease;
}

.social-links a:hover {
  border-color: rgba(42, 174, 131, 0.35);
  color: var(--mint-deep);
}

.social-links span {
  color: var(--mint-deep);
}

.support-links {
  display: flex;
  flex-direction: column;
}

.support-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 16px 1px;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  transition: padding 160ms ease;
}

.support-links a:first-of-type {
  margin-top: 12px;
}

.support-links a:hover {
  padding-left: 5px;
}

.support-links strong,
.support-links small {
  display: block;
}

.support-links strong {
  font-size: 12px;
  font-weight: 600;
}

.support-links small {
  margin-top: 4px;
  color: var(--muted);
  font-size: 9.5px;
}

.support-links i {
  color: var(--mint-deep);
  font-style: normal;
  font-size: 14px;
}

/* ---------- Footer ---------- */

.site-footer {
  padding: 0 22px;
}

.footer-inner {
  display: flex;
  width: min(var(--max), 100%);
  align-items: center;
  gap: 18px;
  margin: 0 auto;
  padding: 26px 0 32px;
  border-top: 1px solid var(--line);
}

.footer-brand {
  display: flex;
  align-items: baseline;
  gap: 7px;
}

.footer-brand .brand-cn {
  font-size: 20px;
}

.footer-brand .brand-en {
  font-size: 10px;
}

.site-footer p {
  margin: 0;
  color: var(--muted);
  font-size: 9.5px;
}

.footer-meta {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-left: auto;
  color: var(--muted);
  font-size: 9px;
}

.footer-meta a {
  color: var(--mint-deep);
  text-decoration: none;
}

/* ---------- Lightbox ---------- */

.lightbox {
  position: fixed;
  z-index: 100;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 30px;
  background: rgba(4, 25, 21, 0.82);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  animation: fade-in 200ms ease both;
}

.lightbox[hidden] {
  display: none;
}

.lightbox img {
  max-width: min(560px, 88vw);
  max-height: 90vh;
  border: 7px solid #0D1D1A;
  border-radius: 34px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.4);
}

.lightbox-close {
  position: absolute;
  top: 22px;
  right: 24px;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.10);
  color: #FFFFFF;
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
}

/* ---------- Motion ---------- */

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 700ms cubic-bezier(0.2, 0.7, 0.25, 1), transform 700ms cubic-bezier(0.2, 0.7, 0.25, 1);
  transition-delay: var(--delay, 0ms);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes hero-copy-in {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes hero-visual-in {
  from { opacity: 0; transform: translateY(22px) scale(0.985); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes chip-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-7px); }
}

@keyframes wave {
  from { transform: scaleY(0.55); opacity: 0.45; }
  to { transform: scaleY(1); opacity: 0.9; }
}

@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}

/* ---------- Responsive ---------- */

@media (max-width: 1020px) {
  .hero {
    grid-template-columns: minmax(0, 1fr) minmax(320px, 0.82fr);
    min-height: 560px;
  }

  .hero-visual {
    min-height: 560px;
  }

  .phone {
    width: 286px;
  }

  .hero-chip-live {
    left: -8px;
  }

  .hero-chip-cpu {
    right: -10px;
  }

  .live-inner {
    padding: 56px 34px 48px;
  }

  .live-stage {
    width: min(680px, 100%);
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

  .live-shot .phone {
    width: min(280px, 100%);
  }

  .detail-section {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .detail-grid {
    max-width: 760px;
  }
}

@media (max-width: 820px) {
  .header-inner {
    gap: 10px;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 10px;
    border: 1px solid rgba(255, 255, 255, 0.9);
    border-radius: 20px;
    background: rgba(251, 253, 252, 0.96);
    box-shadow: 0 20px 44px rgba(21, 86, 73, 0.12);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    padding: 12px 14px;
  }

  .header-actions {
    margin-left: auto;
  }

  .menu-toggle {
    display: block;
  }

  .hero-shell {
    padding-top: 54px;
  }

  .hero {
    grid-template-columns: 1fr;
    gap: 38px;
    min-height: 0;
  }

  .hero-copy {
    max-width: 620px;
  }

  .hero h1 {
    font-size: clamp(48px, 10.8vw, 74px);
  }

  .hero-visual {
    min-height: 590px;
  }

  .phone {
    width: min(310px, 72vw);
  }

  .hero-chip-live {
    left: 6%;
  }

  .hero-chip-cpu {
    right: 6%;
  }

  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .feature-card-wide {
    grid-column: span 2;
  }

  .live-section,
  .download-section {
    width: calc(100% - 32px);
  }

  .live-stage {
    grid-template-columns: 1fr 1fr;
    gap: 22px;
  }

  .live-shot-status {
    grid-column: 1 / -1;
    margin-top: 12px;
  }

  .live-status-card {
    width: min(330px, 100%);
    min-height: 0;
    flex: none;
    margin: 0 auto;
  }

  .live-shot .phone {
    width: min(285px, 92%);
  }

  .live-shot-left .phone {
    transform: rotate(-2.5deg);
  }

  .live-shot-right .phone {
    transform: rotate(2deg);
  }

  .download-card {
    grid-template-columns: 1fr;
    gap: 30px;
    padding: 38px 30px;
  }

  .support-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .footer-inner {
    flex-wrap: wrap;
  }

  .footer-meta {
    width: 100%;
    margin-left: 0;
  }
}

@media (max-width: 600px) {
  .site-header {
    padding: 10px 12px 0;
  }

  .header-inner {
    min-height: 58px;
    padding: 8px 8px 8px 12px;
    border-radius: 18px;
  }

  .brand-mark {
    width: 31px;
    height: 31px;
    border-radius: 9px;
  }

  .brand-cn {
    font-size: 23px;
  }

  .brand-en {
    font-size: 12px;
  }

  .header-download {
    padding: 9px 12px;
    font-size: 10.5px;
  }

  .header-download-full {
    display: none;
  }

  .header-download-short {
    display: inline;
  }

  .menu-toggle {
    width: 36px;
    height: 36px;
  }

  .hero-shell,
  .section {
    width: calc(100% - 32px);
  }

  .hero-shell {
    padding-top: 46px;
  }

  .hero h1 {
    margin-top: 19px;
    font-size: clamp(43px, 12.5vw, 62px);
  }

  .hero-lead {
    margin-top: 18px;
    font-size: 13px;
  }

  .hero-actions {
    margin-top: 23px;
  }

  .button {
    min-height: 45px;
    padding: 0 17px;
    font-size: 12px;
  }

  .hero-meta {
    margin-top: 20px;
    font-size: 9.5px;
  }

  .hero-visual {
    min-height: 535px;
  }

  .phone {
    width: min(275px, 78vw);
    padding: 7px;
    border-radius: 40px;
  }

  .phone-screen {
    border-radius: 33px;
  }

  .phone-camera {
    top: 13px;
    width: 62px;
    height: 15px;
  }

  .hero-chip {
    padding: 9px 10px;
    border-radius: 13px;
  }

  .hero-chip-live {
    top: 14%;
    left: 2px;
  }

  .hero-chip-cpu {
    right: 2px;
    bottom: 16%;
  }

  .hero-chip strong {
    font-size: 9.5px;
  }

  .hero-chip small {
    font-size: 8px;
  }

  .chip-icon {
    width: 24px;
    height: 24px;
    font-size: 12px;
  }

  .hero-foot {
    grid-template-columns: repeat(2, 1fr);
    margin-top: 22px;
  }

  .hero-foot-item {
    padding: 15px 12px;
    border-bottom: 1px solid var(--line);
  }

  .hero-foot-item:first-child {
    padding-left: 12px;
  }

  .hero-foot-item:nth-child(2) {
    border-right: 0;
  }

  .hero-foot-item:nth-child(3),
  .hero-foot-item:nth-child(4) {
    border-bottom: 0;
  }

  .hero-foot-item strong {
    font-size: 14px;
  }

  .hero-foot-item span {
    font-size: 9px;
  }

  .section {
    padding-top: 84px;
  }

  .section-heading h2,
  .detail-intro h2 {
    font-size: clamp(34px, 10vw, 44px);
  }

  .section-heading p {
    font-size: 12px;
  }

  .feature-grid {
    grid-template-columns: 1fr;
    margin-top: 30px;
  }

  .feature-card,
  .feature-card-wide {
    grid-column: span 1;
    min-height: 0;
    padding: 21px;
  }

  .feature-card-wide {
    display: block;
  }

  .feature-copy {
    margin-top: 17px;
  }

  .feature-wave {
    right: 19px;
    bottom: 19px;
    height: 42px;
    opacity: 0.4;
  }

  .live-section {
    margin-top: 84px;
    border-radius: 28px;
  }

  .live-inner {
    padding: 38px 18px 34px;
  }

  .live-heading h2 {
    font-size: clamp(34px, 9.6vw, 44px);
  }

  .live-heading p {
    font-size: 11px;
  }

  .live-stage {
    width: min(330px, 100%);
    grid-template-columns: 1fr;
    gap: 30px;
    margin-top: 34px;
  }

  .live-shot .phone {
    width: 100%;
    max-width: 320px;
    padding: 5px;
    border-radius: 34px;
  }

  .live-shot .phone-screen {
    border-radius: 29px;
  }

  .live-shot .phone-camera {
    top: 10px;
    width: 48px;
    height: 12px;
  }

  .live-shot-left .phone,
  .live-shot-right .phone {
    transform: none;
  }

  .live-shot figcaption {
    display: block;
    margin-top: 12px;
    font-size: 8.5px;
    line-height: 1.6;
  }

  .live-shot figcaption span {
    display: block;
    margin-bottom: 2px;
  }

  .detail-grid {
    grid-template-columns: 1fr;
  }

  .detail-card {
    min-height: 190px;
  }

  .download-section {
    margin-top: 84px;
  }

  .download-card {
    padding: 30px 21px;
    border-radius: 28px;
  }

  .download-copy h2 {
    font-size: clamp(39px, 11.5vw, 50px);
  }

  .download-copy p {
    font-size: 11.5px;
  }

  .support-section {
    padding-bottom: 70px;
  }

  .support-grid {
    padding-top: 28px;
  }

  .footer-inner {
    gap: 10px;
    padding-bottom: 24px;
  }

  .footer-meta {
    justify-content: space-between;
    gap: 10px;
  }

  .site-footer p {
    display: none;
  }

  .lightbox {
    padding: 16px;
  }

  .lightbox img {
    border-width: 5px;
    border-radius: 26px;
  }

  .lightbox-close {
    top: 14px;
    right: 14px;
  }
}