:root {
  --bg: #000000;
  --bg-soft: #0a0a0a;
  --panel: #101010;
  --panel-soft: #161616;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.14);
  --text: #f5f5f7;
  --muted: #86868b;
  --shadow: 0 40px 120px rgba(0, 0, 0, 0.55);
  --width: 1280px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: hidden;
  font-family: "Plus Jakarta Sans", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 50% -10%, rgba(255, 255, 255, 0.16), transparent 28%),
    linear-gradient(180deg, #060606 0%, #000000 40%, #050505 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 50% 0%, rgba(255, 255, 255, 0.08), transparent 34%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), transparent 20%);
}

main {
  width: min(calc(100% - 32px), var(--width));
  margin: 0 auto;
  padding-bottom: 80px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  padding: 16px;
}

.nav-shell {
  width: min(calc(100% - 32px), var(--width));
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(8, 8, 8, 0.72);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text);
  font-weight: 600;
}

.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: linear-gradient(180deg, #ffffff, #a1a1a6);
  color: #000;
  font-size: 0.78rem;
  font-weight: 800;
}

.site-nav {
  display: inline-flex;
  gap: 24px;
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
}

.lang-btn {
  border: 0;
  padding: 8px 12px;
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: background 180ms ease, color 180ms ease;
}

.lang-btn.is-active {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text);
}

.site-nav a,
.contact-actions a {
  color: var(--muted);
  text-decoration: none;
  transition: color 180ms ease;
}

.site-nav a:hover,
.contact-actions a:hover {
  color: var(--text);
}

.hero,
.hero-media,
.statement,
.feature-section,
.showcase,
.gear,
.members,
.metrics,
.contact {
  position: relative;
  opacity: 0;
  transform: translateY(28px) scale(0.985);
  filter: blur(8px);
  transition: opacity 850ms ease, transform 850ms ease, filter 850ms ease;
}

.hero.is-visible,
.hero-media.is-visible,
.statement.is-visible,
.feature-section.is-visible,
.showcase.is-visible,
.gear.is-visible,
.members.is-visible,
.metrics.is-visible,
.contact.is-visible {
  opacity: 1;
  transform: translateY(0) scale(1);
  filter: blur(0);
}

.reveal[data-reveal="hero"] {
  transform: translateY(38px) scale(0.975);
}

.reveal[data-reveal="statement"] {
  transform: translateX(-42px) scale(0.985);
}

.reveal[data-reveal="hero-media"] {
  transform: translateY(30px) scale(0.982);
}

.reveal[data-reveal="plans"] {
  transform: translateX(42px) scale(0.985);
}

.reveal[data-reveal="history"] {
  transform: translateY(34px) scale(0.982);
}

.reveal[data-reveal="gear"] {
  transform: translateX(-36px) scale(0.985);
}

.reveal[data-reveal="members"] {
  transform: translateX(36px) scale(0.985);
}

.reveal[data-reveal="metrics"] {
  transform: translateY(24px) scale(0.99);
}

.reveal[data-reveal="contact"] {
  transform: translateY(30px) scale(0.986);
}

.hero {
  min-height: calc(100svh - 88px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 120px 0 120px;
  text-align: center;
}

.hero-media {
  min-height: 100svh;
  padding: 120px 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.eyebrow {
  margin: 0 0 20px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.hero h1,
.statement h2,
.feature-copy h2,
.showcase h2,
.contact h2 {
  margin: 0;
  line-height: 0.95;
  letter-spacing: -0.06em;
}

.hero h1 {
  font-size: clamp(4.4rem, 11vw, 8.6rem);
}

.hero-text,
.statement p,
.feature-copy p,
.contact-text {
  max-width: 820px;
  color: var(--muted);
  font-size: 1.1rem;
  line-height: 1.8;
}

.hero-text {
  margin: 24px auto 0;
}

.hero-actions,
.contact-actions {
  display: flex;
  gap: 14px;
  margin-top: 32px;
  justify-content: center;
  flex-wrap: wrap;
}

.button {
  min-width: 150px;
  padding: 14px 24px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  transition: transform 180ms ease, background 180ms ease, border-color 180ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  background: #f5f5f7;
  color: #000;
}

.button-secondary {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  border: 1px solid var(--line);
}

.hero-device {
  position: relative;
  width: 100%;
  margin-top: 72px;
}

.device-glow {
  position: absolute;
  inset: 12% 18% auto;
  height: 320px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.18), transparent 62%);
  filter: blur(40px);
}

.device-frame {
  position: relative;
  padding: 18px;
  border-radius: 42px;
  background: linear-gradient(180deg, #2a2a2c, #111113 35%, #070707 100%);
  box-shadow: var(--shadow);
  transition: transform 220ms ease, box-shadow 220ms ease;
  transform-style: preserve-3d;
}

.device-screen {
  min-height: 700px;
  border-radius: 28px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  background-color: #050505;
  background:
    linear-gradient(180deg, rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 0.56)),
    linear-gradient(90deg, rgba(0, 0, 0, 0.78) 0%, rgba(0, 0, 0, 0.18) 20%, rgba(0, 0, 0, 0.18) 80%, rgba(0, 0, 0, 0.78) 100%),
    url("./members/all.png"),
    radial-gradient(circle at 50% 0%, rgba(255, 255, 255, 0.16), transparent 30%),
    linear-gradient(180deg, #111111 0%, #050505 100%);
  background-size: cover, cover, auto 100%, cover, cover;
  background-position: center, center, center center, center top, center;
  background-repeat: no-repeat;
  padding: 28px 32px 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow: hidden;
  filter: brightness(0.6) saturate(0.86);
  transform: scale(1.018);
  transition: filter 1100ms ease, transform 1100ms ease;
}

.device-screen::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(5, 5, 5, 0.9), rgba(5, 5, 5, 0.82));
  pointer-events: none;
  opacity: 1;
  transition: opacity 1100ms ease;
}

.screen-topline {
  color: #98989d;
  font-size: 0.92rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-shadow: 0 6px 22px rgba(0, 0, 0, 0.75);
  align-self: flex-start;
  padding: 10px 14px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.42);
  backdrop-filter: blur(8px);
}

.screen-title {
  max-width: 6.6ch;
  margin-top: auto;
  margin-bottom: 10px;
  margin-left: auto;
  font-size: clamp(2.1rem, 3.6vw, 3.7rem);
  text-align: right;
  line-height: 0.98;
  letter-spacing: -0.06em;
  font-weight: 700;
  text-shadow: 0 10px 30px rgba(0, 0, 0, 0.86);
}

.screen-grid {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  flex-wrap: wrap;
  margin-left: auto;
  max-width: 50%;
}

.screen-grid span {
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.46);
  color: #f3f3f5;
  backdrop-filter: blur(8px);
  text-shadow: 0 4px 14px rgba(0, 0, 0, 0.65);
}

.statement {
  min-height: 100svh;
  padding: 180px 0 120px;
  text-align: center;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 14px;
}

.statement h2,
.showcase h2,
.contact h2 {
  font-size: clamp(2.6rem, 6vw, 5.4rem);
  max-width: 12ch;
  margin: 0 auto;
}

.showcase h2,
.contact h2 {
  margin: 0;
}

.statement p {
  margin: 22px auto 0;
}

.feature-section {
  min-height: 100svh;
  padding: 180px 0 120px;
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 28px;
  align-items: center;
}

.feature-copy {
  position: sticky;
  top: 104px;
}

.feature-copy h2 {
  font-size: clamp(3rem, 7vw, 5.8rem);
}

.feature-stage {
  display: grid;
  gap: 20px;
}

.spotlight-panel,
.product-panel,
.metric {
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.01)),
    var(--panel);
  box-shadow: var(--shadow);
}

.interactive-panel,
.gear-card,
.member-card {
  position: relative;
  isolation: isolate;
}

.interactive-panel::after,
.gear-card::after,
.member-card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background:
    radial-gradient(
      280px circle at var(--mx, 50%) var(--my, 50%),
      rgba(255, 255, 255, 0.12),
      transparent 42%
    );
  opacity: 0;
  transition: opacity 220ms ease;
  z-index: 0;
}

.interactive-panel:hover::after,
.gear-card:hover::after,
.member-card:hover::after {
  opacity: 1;
}

.hero-media.is-visible .device-screen::after {
  opacity: 0;
}

.hero-media.is-visible .device-screen {
  filter: brightness(1) saturate(1);
  transform: scale(1);
}

.spotlight-panel {
  position: relative;
  min-height: 220px;
  padding: 34px;
  border-radius: 30px;
  transition: transform 220ms ease, border-color 220ms ease, box-shadow 220ms ease;
  overflow: hidden;
}

.spotlight-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.04), transparent 22%),
    linear-gradient(180deg, rgba(0, 0, 0, 0.1) 0%, rgba(0, 0, 0, 0.3) 42%, rgba(0, 0, 0, 0.86) 100%);
  z-index: 0;
}

.spotlight-panel::after {
  content: "";
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.58;
  transform: scale(1.02);
  z-index: 0;
}

.spotlight-panel > * {
  position: relative;
  z-index: 1;
}

.history-dapanjian::after {
  background-image:
    linear-gradient(180deg, rgba(0, 0, 0, 0.04), rgba(0, 0, 0, 0.42)),
    url("./source/history/dapanjian.jpg");
}

.history-aixinxian::after {
  background-image:
    linear-gradient(180deg, rgba(0, 0, 0, 0.04), rgba(0, 0, 0, 0.42)),
    url("./source/history/aixinxian.png");
}

.history-changbaishan::after {
  background-image:
    linear-gradient(180deg, rgba(0, 0, 0, 0.04), rgba(0, 0, 0, 0.42)),
    url("./source/history/changbaishan.jpg");
}

.reveal .feature-stage > *,
.reveal .product-grid > *,
.reveal .gear-grid > *,
.reveal .member-grid > *,
.reveal .metrics > * {
  opacity: 0;
  transform: translateY(24px) scale(0.985);
  transition: opacity 680ms ease, transform 680ms ease;
}

.reveal.is-visible .feature-stage > *,
.reveal.is-visible .product-grid > *,
.reveal.is-visible .gear-grid > *,
.reveal.is-visible .member-grid > *,
.reveal.is-visible .metrics > * {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.reveal .showcase-intro,
.reveal .feature-copy,
.reveal .statement .eyebrow,
.reveal .statement h2,
.reveal .statement p {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 560ms ease, transform 560ms ease;
}

.reveal.is-visible .showcase-intro,
.reveal.is-visible .feature-copy,
.reveal.is-visible .statement .eyebrow,
.reveal.is-visible .statement h2,
.reveal.is-visible .statement p {
  opacity: 1;
  transform: translateY(0);
}

.reveal.is-visible .showcase-intro,
.reveal.is-visible .feature-copy,
.reveal.is-visible .statement .eyebrow {
  transition-delay: 120ms;
}

.reveal.is-visible .statement h2 {
  transition-delay: 180ms;
}

.reveal.is-visible .statement p {
  transition-delay: 240ms;
}

.feature-stage > *:nth-child(1),
.product-grid > *:nth-child(1),
.gear-grid > *:nth-child(1),
.member-grid > *:nth-child(1),
.metrics > *:nth-child(1) {
  transition-delay: 360ms;
}

.feature-stage > *:nth-child(2),
.product-grid > *:nth-child(2),
.gear-grid > *:nth-child(2),
.member-grid > *:nth-child(2),
.metrics > *:nth-child(2) {
  transition-delay: 440ms;
}

.feature-stage > *:nth-child(3),
.product-grid > *:nth-child(3),
.gear-grid > *:nth-child(3),
.member-grid > *:nth-child(3),
.metrics > *:nth-child(3) {
  transition-delay: 520ms;
}

.feature-stage > *:nth-child(4),
.product-grid > *:nth-child(4),
.gear-grid > *:nth-child(4),
.member-grid > *:nth-child(4),
.metrics > *:nth-child(4) {
  transition-delay: 600ms;
}

.spotlight-panel span,
.product-panel p {
  color: #8e8e93;
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.spotlight-panel h3,
.product-panel h3 {
  margin: 18px 0 12px;
  font-size: 2rem;
  letter-spacing: -0.05em;
}

.spotlight-panel p,
.product-panel span,
.metric span {
  color: var(--muted);
  line-height: 1.8;
}

.showcase {
  min-height: 100svh;
  padding: 180px 0 120px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: stretch;
}

.gear {
  min-height: 100svh;
  padding: 180px 0 120px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.showcase-intro {
  width: 100%;
  margin: 0 0 40px;
  text-align: left;
}

.slider-shell {
  position: relative;
  width: 100%;
  margin: 0;
  overflow: clip;
}

.slider-grid {
  --visible-cards: 3;
  --slide-index: 0;
  --card-gap: 20px;
  --card-width-px: 320px;
  display: flex;
  gap: var(--card-gap);
  width: max-content;
  min-width: 100%;
  transform: translate3d(calc((var(--card-width-px) + var(--card-gap)) * var(--slide-index) * -1), 0, 0);
  transition: transform 520ms cubic-bezier(0.22, 1, 0.36, 1);
  will-change: transform;
}

.product-grid.slider-grid,
.gear-grid.slider-grid {
  display: flex;
  grid-template-columns: none;
}

.slider-grid > * {
  flex: 0 0 var(--card-width-px);
  min-width: 0;
}

.slider-shell::before,
.slider-shell::after {
  display: none;
}

.slider-control {
  position: absolute;
  top: calc(50% - 24px);
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.46);
  color: #f5f5f7;
  font: inherit;
  font-size: 1.1rem;
  line-height: 1;
  padding: 0;
  cursor: pointer;
  z-index: 4;
  backdrop-filter: blur(8px);
  transition: transform 160ms ease, border-color 160ms ease, opacity 160ms ease;
}

.slider-control:hover {
  transform: translateY(-1px);
  border-color: rgba(255, 255, 255, 0.3);
}

.slider-control:disabled {
  opacity: 0.35;
  cursor: default;
}

.slider-control.prev {
  left: -12px;
}

.slider-control.next {
  right: -12px;
}

.members {
  min-height: 100svh;
  padding: 180px 0 120px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: stretch;
}

.product-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 20px;
}

.future-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  width: 100%;
  margin: 0;
  align-items: stretch;
}

.future-grid .panel-wide {
  min-height: 340px;
}

.product-panel {
  position: relative;
  min-height: 280px;
  padding: 24px;
  border-radius: 32px;
  display: flex;
  flex-direction: column;
  justify-content: end;
  background:
    radial-gradient(circle at 50% 12%, rgba(255, 255, 255, 0.14), transparent 24%),
    linear-gradient(180deg, #181818 0%, #080808 100%);
  transition: transform 220ms ease, border-color 220ms ease, box-shadow 220ms ease;
  overflow: hidden;
}

.product-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.04), transparent 22%),
    linear-gradient(180deg, rgba(0, 0, 0, 0.08) 0%, rgba(0, 0, 0, 0.28) 42%, rgba(0, 0, 0, 0.84) 100%);
  z-index: 0;
}

.product-panel::after {
  content: "";
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.6;
  transform: scale(1.02);
  z-index: 0;
}

.product-panel > * {
  position: relative;
  z-index: 1;
}

.panel-wide {
  min-height: 520px;
}

.plan-qinling::after {
  background-image:
    linear-gradient(180deg, rgba(0, 0, 0, 0.04), rgba(0, 0, 0, 0.42)),
    url("./source/plans/qinling.jpg");
}

.plan-huangshan::after {
  background-image:
    linear-gradient(180deg, rgba(0, 0, 0, 0.04), rgba(0, 0, 0, 0.42)),
    url("./source/plans/huangshan.jpg");
}

.plan-wugongshan::after {
  background-image:
    linear-gradient(180deg, rgba(0, 0, 0, 0.04), rgba(0, 0, 0, 0.42)),
    url("./source/plans/wugongshan.jpg");
}

.plan-huashan::after {
  background-image:
    linear-gradient(180deg, rgba(0, 0, 0, 0.04), rgba(0, 0, 0, 0.42)),
    url("./source/plans/huashan.jpg");
}

.gear-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 20px;
}

.gear-card {
  min-height: 300px;
  padding: 32px;
  border-radius: 32px;
  border: 1px solid var(--line);
  background:
    radial-gradient(circle at 50% 10%, rgba(255, 255, 255, 0.12), transparent 28%),
    linear-gradient(180deg, #171717 0%, #080808 100%);
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  justify-content: end;
  text-align: left;
  width: 100%;
  cursor: pointer;
  transition: transform 220ms ease, border-color 220ms ease, box-shadow 220ms ease;
}

.gear-card-large {
  min-height: 460px;
}

.gear-poster {
  position: relative;
  overflow: hidden;
}

.gear-poster::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.04), transparent 24%),
    linear-gradient(180deg, transparent 34%, rgba(0, 0, 0, 0.72) 100%);
}

.gear-poster::after {
  content: "";
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.32;
  mix-blend-mode: screen;
}

.gear-poster:hover {
  border-color: var(--line-strong);
  transform: translateY(-2px);
}

.gear-core::after {
  background-image:
    linear-gradient(180deg, rgba(0, 0, 0, 0.06), rgba(0, 0, 0, 0.42)),
    url("./source/gears/core.jpg");
}

.gear-safety::after {
  background-image:
    linear-gradient(180deg, rgba(0, 0, 0, 0.06), rgba(0, 0, 0, 0.42)),
    url("./source/gears/safety.jpg");
}

.gear-weather::after {
  background-image:
    linear-gradient(180deg, rgba(0, 0, 0, 0.06), rgba(0, 0, 0, 0.42)),
    url("./source/gears/weather.jpg");
}

.gear-supply::after {
  background-image:
    linear-gradient(180deg, rgba(0, 0, 0, 0.06), rgba(0, 0, 0, 0.42)),
    url("./source/gears/supply.jpeg");
}

.gear-card p {
  position: relative;
  z-index: 1;
  margin: 0 0 14px;
  color: #8e8e93;
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.gear-card h3 {
  position: relative;
  z-index: 1;
  margin: 0 0 12px;
  font-size: 2rem;
  letter-spacing: -0.05em;
}

.gear-card span {
  position: relative;
  z-index: 1;
  color: var(--muted);
  line-height: 1.8;
}

.member-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.member-card {
  min-height: 300px;
  padding: 28px;
  border-radius: 30px;
  border: 1px solid var(--line);
  background:
    radial-gradient(circle at 50% 0%, rgba(255, 255, 255, 0.1), transparent 26%),
    linear-gradient(180deg, #151515 0%, #090909 100%);
  box-shadow: var(--shadow);
  transition: transform 220ms ease, border-color 220ms ease, box-shadow 220ms ease;
}

.member-poster {
  position: relative;
  overflow: hidden;
  text-align: left;
  cursor: pointer;
  width: 100%;
}

.member-poster::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(0, 0, 0, 0.08) 24%, rgba(0, 0, 0, 0.78) 72%, rgba(0, 0, 0, 0.92) 100%);
}

.member-poster::after {
  content: "";
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.48;
  filter: saturate(0.92) contrast(0.96);
}

.member-poster:hover {
  border-color: var(--line-strong);
  transform: translateY(-2px);
}

.member-xie::after {
  background-image:
    linear-gradient(180deg, rgba(0, 0, 0, 0.16), rgba(0, 0, 0, 0.56)),
    url("./members/xie.png");
}

.member-chen::after {
  background-image:
    linear-gradient(180deg, rgba(0, 0, 0, 0.16), rgba(0, 0, 0, 0.56)),
    url("./members/chen.png");
}

.member-huang::after {
  background-image:
    linear-gradient(180deg, rgba(0, 0, 0, 0.16), rgba(0, 0, 0, 0.56)),
    url("./members/huang.png");
}

.member-jiang::after {
  background-image:
    linear-gradient(180deg, rgba(0, 0, 0, 0.16), rgba(0, 0, 0, 0.56)),
    url("./members/jiang.png");
}

.member-index {
  position: relative;
  z-index: 1;
  display: block;
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.84rem;
  letter-spacing: 0.12em;
  text-shadow: 0 4px 14px rgba(0, 0, 0, 0.72);
}

.member-card-content {
  position: absolute;
  right: 28px;
  bottom: 28px;
  left: 28px;
  z-index: 1;
  padding: 0;
}

.member-card h3 {
  margin: 0 0 6px;
  font-size: 1.85rem;
  letter-spacing: -0.05em;
  color: #ffffff;
  text-shadow: 0 8px 22px rgba(0, 0, 0, 0.86);
}

.member-card p {
  margin: 0;
  max-width: 20ch;
  color: rgba(245, 245, 247, 0.86);
  font-size: 0.88rem;
  line-height: 1.5;
  font-weight: 500;
  text-shadow: 0 6px 18px rgba(0, 0, 0, 0.82);
}

.member-card span {
  color: var(--muted);
  line-height: 1.8;
}

.member-modal {
  position: fixed;
  inset: 0;
  z-index: 40;
  display: grid;
  place-items: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 220ms ease, visibility 220ms ease;
}

.member-modal.is-open {
  opacity: 1;
  visibility: visible;
}

.member-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.72);
  backdrop-filter: blur(10px);
}

.member-modal-dialog {
  position: relative;
  z-index: 1;
  width: min(100%, 720px);
  padding: 34px;
  border-radius: 30px;
  border: 1px solid var(--line);
  background:
    radial-gradient(circle at top, rgba(255, 255, 255, 0.1), transparent 30%),
    linear-gradient(180deg, #171717 0%, #090909 100%);
  box-shadow: var(--shadow);
}

.member-modal-close {
  position: absolute;
  top: 18px;
  right: 18px;
  width: 38px;
  height: 38px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  font-size: 1.6rem;
  line-height: 1;
  transform: rotate(45deg);
  cursor: pointer;
}

.member-modal-dialog h2 {
  margin: 0;
  font-size: clamp(2.5rem, 6vw, 4rem);
  letter-spacing: -0.06em;
  line-height: 0.95;
}

.member-modal-role {
  margin: 18px 0 10px;
  color: #d6d6da;
  font-size: 1.1rem;
  font-weight: 600;
}

.member-modal-text {
  margin: 0;
  color: var(--muted);
  font-size: 1.04rem;
  line-height: 1.9;
}

.bgm-toggle {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 50;
  min-width: 112px;
  padding: 12px 16px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  background: rgba(8, 8, 8, 0.78);
  color: #f5f5f7;
  font: inherit;
  letter-spacing: 0.04em;
  cursor: pointer;
  backdrop-filter: blur(14px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
}

.bgm-toggle.is-on {
  background: rgba(245, 245, 247, 0.92);
  color: #000;
}

.page-next-btn {
  position: absolute;
  left: 50%;
  bottom: 24px;
  display: grid;
  place-items: center;
  transform: translateX(-50%);
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: transparent;
  font-size: 0;
  cursor: pointer;
  transition: transform 200ms ease, opacity 200ms ease;
  z-index: 5;
  animation: floatArrow 2.2s ease-in-out infinite;
  opacity: 0.82;
}

.page-next-btn::after {
  content: "";
  display: block;
  width: 14px;
  height: 14px;
  border-right: 2px solid rgba(245, 245, 247, 0.92);
  border-bottom: 2px solid rgba(245, 245, 247, 0.92);
  transform: rotate(45deg) translate(-1px, -1px);
  filter: drop-shadow(0 6px 14px rgba(0, 0, 0, 0.62));
}

.page-next-btn:hover {
  transform: translateX(-50%) translateY(-3px);
  opacity: 1;
}

@keyframes floatArrow {
  0% {
    transform: translateX(-50%) translateY(0);
  }
  50% {
    transform: translateX(-50%) translateY(-6px);
  }
  100% {
    transform: translateX(-50%) translateY(0);
  }
}

.gear-modal {
  position: fixed;
  inset: 0;
  z-index: 41;
  display: grid;
  place-items: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 220ms ease, visibility 220ms ease;
}

.gear-modal.is-open {
  opacity: 1;
  visibility: visible;
}

.gear-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.76);
  backdrop-filter: blur(10px);
}

.gear-modal-dialog {
  position: relative;
  z-index: 1;
  width: min(100%, 960px);
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  overflow: hidden;
  border-radius: 32px;
  border: 1px solid var(--line);
  background:
    radial-gradient(circle at top, rgba(255, 255, 255, 0.1), transparent 30%),
    linear-gradient(180deg, #171717 0%, #090909 100%);
  box-shadow: var(--shadow);
}

.gear-modal-close {
  position: absolute;
  top: 18px;
  right: 18px;
  z-index: 2;
  width: 38px;
  height: 38px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  font-size: 1.6rem;
  line-height: 1;
  transform: rotate(45deg);
  cursor: pointer;
}

.gear-modal-visual {
  min-height: 420px;
  background-size: cover;
  background-position: center;
  border-right: 1px solid var(--line);
}

.gear-modal-copy {
  padding: 34px;
}

.gear-modal-copy h2 {
  margin: 0;
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  line-height: 0.98;
  letter-spacing: -0.06em;
}

.gear-modal-role {
  margin: 18px 0 10px;
  color: #d6d6da;
  font-size: 1.06rem;
  font-weight: 600;
}

.gear-modal-text {
  margin: 0;
  color: var(--muted);
  font-size: 1.02rem;
  line-height: 1.9;
}

.metrics {
  min-height: 100svh;
  padding: 160px 0 120px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  align-content: center;
  width: 100%;
}

.metric {
  padding: 28px;
  border-radius: 28px;
  transition: transform 220ms ease, border-color 220ms ease, box-shadow 220ms ease;
}

.interactive-panel:hover,
.gear-card:hover,
.member-card:hover,
.metric:hover {
  transform: translateY(-6px);
  border-color: var(--line-strong);
  box-shadow: 0 46px 120px rgba(0, 0, 0, 0.62);
}

.metric strong {
  display: block;
  margin-bottom: 12px;
  font-size: 2.2rem;
  letter-spacing: -0.05em;
}

.contact {
  min-height: 100svh;
  padding: 180px 0 120px;
  text-align: left;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  width: 100%;
}

.contact-text {
  margin: 24px 0 0;
}

.contact-actions a {
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
}

.contact-actions {
  justify-content: flex-start;
}

@media (max-width: 980px) {
  .feature-section,
  .product-grid,
  .gear-grid,
  .metrics {
    grid-template-columns: 1fr;
  }

  .gear-modal-dialog {
    grid-template-columns: 1fr;
  }

  .gear-modal-visual {
    min-height: 260px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .feature-copy {
    position: static;
  }

  .device-screen {
    min-height: 460px;
  }

  .statement,
  .hero,
  .hero-media,
  .feature-section,
  .showcase,
  .gear,
  .members,
  .metrics,
  .contact {
    min-height: auto;
    padding: 104px 0 84px;
    display: flex;
    flex-direction: column;
  }

  .showcase,
  .gear,
  .members {
    justify-content: flex-start;
  }

  .statement,
  .contact {
    justify-content: center;
  }

  /* 滑块容器 - 允许触摸滑动 */
  .slider-shell {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scroll-snap-type: x mandatory;
    padding-bottom: 60px;
    margin-bottom: -20px;
  }

  .slider-grid {
    --visible-cards: 1;
    --card-gap: 14px;
    width: 100%;
    min-width: 100%;
    transform: none !important;
    display: flex;
    gap: var(--card-gap);
  }

  .slider-grid > * {
    flex: 0 0 calc(100% - var(--card-gap));
    min-width: calc(100% - var(--card-gap));
    scroll-snap-align: center;
  }

  .slider-shell::before,
  .slider-shell::after {
    display: none;
  }

  /* 箭头固定在底部居中 */
  .slider-control {
    top: auto;
    bottom: 0;
    transform: translateY(0);
  }

  .slider-control.prev {
    left: calc(50% - 50px);
  }

  .slider-control.next {
    right: calc(50% - 50px);
  }
}

@media (max-width: 720px) {
  :root {
    --mobile-gutter: 14px;
  }

  main,
  .nav-shell {
    width: calc(100% - (var(--mobile-gutter) * 2));
  }

  /* Header 优化 - 改为紧凑型 */
  .site-header {
    padding: 8px 0;
  }

  .nav-shell {
    flex-direction: column;
    padding: 10px 12px;
    border-radius: 16px;
    align-items: stretch;
    gap: 8px;
  }

  .brand {
    justify-content: flex-start;
    gap: 8px;
  }

  .brand-mark {
    width: 28px;
    height: 28px;
    font-size: 0.7rem;
  }

  #brand-text {
    font-size: 0.85rem;
  }

  /* 导航改为横向滚动 */
  .site-nav {
    width: 100%;
    flex-wrap: nowrap;
    justify-content: flex-start;
    gap: 6px;
    overflow-x: auto;
    padding: 4px 0;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior-x: contain;
    touch-action: pan-x;
  }

  .site-nav::-webkit-scrollbar {
    display: none;
  }

  .site-nav a {
    white-space: nowrap;
    padding: 6px 10px;
    font-size: 0.78rem;
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.02);
    color: var(--muted);
  }

  .lang-switch {
    align-self: flex-start;
    padding: 3px;
  }

  .lang-btn {
    padding: 5px 8px;
    font-size: 0.72rem;
  }

  /* Hero 区域 */
  .hero {
    min-height: calc(100svh - 100px);
    padding: 48px 0 32px;
    align-items: flex-start;
    text-align: left;
  }

  .hero-media {
    min-height: auto;
    padding: 48px 0 40px;
  }

  .hero h1 {
    font-size: clamp(2.2rem, 11vw, 3.2rem);
    line-height: 1.05;
  }

  .hero h1,
  .statement h2,
  .showcase h2,
  .feature-copy h2,
  .contact h2,
  .hero-text,
  .statement p,
  .feature-copy p,
  .contact-text {
    overflow-wrap: anywhere;
    word-break: break-word;
  }

  .eyebrow {
    margin-bottom: 10px;
    font-size: 0.68rem;
    letter-spacing: 0.14em;
  }

  .hero-text,
  .statement p,
  .feature-copy p,
  .contact-text {
    font-size: 0.92rem;
    line-height: 1.6;
  }

  /* 按钮全宽 */
  .hero-actions,
  .contact-actions {
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    margin-top: 20px;
  }

  .button,
  .contact-actions a {
    width: 100%;
    min-width: 0;
    text-align: center;
    padding: 12px 18px;
    font-size: 0.92rem;
  }

  /* 设备框架 */
  .hero-device {
    margin-top: 0;
    width: 100%;
  }

  .device-glow {
    inset: 8% 12% auto;
    height: 180px;
  }

  .device-frame {
    width: 100%;
    padding: 8px;
    border-radius: 20px;
  }

  .device-screen {
    min-height: 420px;
    padding: 14px 14px 16px;
    border-radius: 16px;
    background-size: cover, cover, auto 100%, cover, cover;
    background-position: center, center, center center, center top, center;
  }

  .screen-topline {
    padding: 6px 10px;
    font-size: 0.68rem;
  }

  .screen-title,
  .feature-copy h2,
  .statement h2,
  .showcase h2,
  .contact h2 {
    max-width: none;
    font-size: clamp(1.6rem, 7.5vw, 2.2rem);
    line-height: 1.02;
  }

  .screen-title {
    margin-left: 0;
    margin-bottom: 12px;
    max-width: 8ch;
    text-align: left;
  }

  .screen-grid {
    justify-content: flex-start;
    margin-left: 0;
    max-width: none;
    gap: 6px;
  }

  .screen-grid span {
    padding: 6px 8px;
    font-size: 0.68rem;
  }

  /* 通用卡片 */
  .spotlight-panel,
  .product-panel,
  .metric,
  .gear-card,
  .member-card {
    border-radius: 16px;
  }

  .showcase-intro,
  .feature-copy {
    width: 100%;
    margin-bottom: 20px;
    text-align: left;
  }

  .statement,
  .showcase,
  .gear,
  .members,
  .metrics,
  .contact,
  .feature-section {
    width: 100%;
    padding: 60px 0 48px;
    display: flex;
    flex-direction: column;
    align-items: stretch;
  }

  .reveal[data-reveal="hero"],
  .reveal[data-reveal="statement"],
  .reveal[data-reveal="hero-media"],
  .reveal[data-reveal="plans"],
  .reveal[data-reveal="history"],
  .reveal[data-reveal="gear"],
  .reveal[data-reveal="members"],
  .reveal[data-reveal="metrics"],
  .reveal[data-reveal="contact"] {
    transform: translateY(16px) scale(0.99);
  }

  .showcase,
  .gear,
  .members {
    justify-content: flex-start;
  }

  .statement {
    justify-content: center;
    min-height: auto;
    padding: 80px 0 60px;
  }

  .contact {
    justify-content: center;
    min-height: auto;
    padding: 80px 0 60px;
  }

  .feature-stage,
  .member-grid,
  .metrics {
    width: 100%;
  }

  .feature-stage {
    gap: 12px;
  }

  .spotlight-panel,
  .product-panel,
  .gear-card,
  .member-card,
  .metric {
    min-height: auto;
    padding: 16px;
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.28);
  }

  .product-panel h3,
  .spotlight-panel h3,
  .gear-card h3,
  .member-card h3 {
    font-size: 1.25rem;
    margin: 8px 0 6px;
  }

  .product-panel span,
  .spotlight-panel p,
  .gear-card span,
  .member-card p,
  .metric span {
    line-height: 1.45;
    font-size: 0.84rem;
  }

  /* 装备卡片 */
  .gear-card {
    min-height: 200px;
    padding: 14px;
  }

  .gear-card-large {
    min-height: 260px;
  }

  .gear-card p {
    font-size: 0.72rem;
    margin-bottom: 8px;
  }

  .gear-card h3 {
    font-size: 1.2rem;
  }

  .gear-card span {
    font-size: 0.82rem;
  }

  /* 成员卡片 - 2x2 网格 */
  .member-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  .member-card {
    min-height: 180px;
    padding: 12px;
    border-radius: 14px;
  }

  .member-card-content {
    right: 12px;
    bottom: 12px;
    left: 12px;
  }

  .member-card h3 {
    font-size: 1.1rem;
    margin-bottom: 4px;
  }

  .member-card p {
    font-size: 0.72rem;
    line-height: 1.3;
    max-width: none;
  }

  .member-index {
    font-size: 0.72rem;
  }

  /* Metrics - 1列 */
  .metrics {
    display: flex;
    flex-direction: column;
    gap: 10px;
  }

  .metric {
    text-align: left;
    padding: 14px 16px;
  }

  .metric strong {
    margin-bottom: 4px;
    font-size: 1.5rem;
  }

  /* 轮播 - 触摸滑动 */
  .slider-shell {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scroll-snap-type: x mandatory;
    overscroll-behavior-x: contain;
    touch-action: pan-x;
    padding-bottom: 50px;
    margin-bottom: -10px;
    max-width: 100%;
  }

  .slider-grid {
    --visible-cards: 1;
    --card-gap: 10px;
    width: 100%;
    min-width: 100%;
    transform: none !important;
    display: flex;
    gap: var(--card-gap);
  }

  .slider-grid > * {
    flex: 0 0 calc(100% - var(--card-gap));
    min-width: calc(100% - var(--card-gap));
    scroll-snap-align: center;
  }

  .slider-control {
    width: 36px;
    height: 36px;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .slider-control.prev {
    left: calc(50% - 44px);
  }

  .slider-control.next {
    right: calc(50% - 44px);
  }

  /* 弹窗模态框 */
  .member-modal-dialog {
    width: 100%;
    max-width: 100%;
    margin: 0;
    padding: 20px;
    border-radius: 16px;
    max-height: 90vh;
    overflow-y: auto;
  }

  .member-modal-close {
    top: 12px;
    right: 12px;
    width: 32px;
    height: 32px;
    font-size: 1.3rem;
  }

  .member-modal-dialog h2 {
    font-size: 1.6rem;
  }

  .member-modal-role {
    font-size: 0.94rem;
    margin: 10px 0 8px;
  }

  .member-modal-text {
    font-size: 0.9rem;
    line-height: 1.6;
  }

  .gear-modal-dialog {
    width: 100%;
    max-width: 100%;
    margin: 0;
    border-radius: 16px;
    max-height: 90vh;
    overflow-y: auto;
  }

  .gear-modal-visual {
    min-height: 180px;
  }

  .gear-modal-copy {
    padding: 16px;
  }

  .gear-modal-close {
    top: 12px;
    right: 12px;
    width: 32px;
    height: 32px;
    font-size: 1.3rem;
  }

  /* BGM 按钮 */
  .bgm-toggle {
    right: 10px;
    bottom: 56px;
    padding: 8px 10px;
    font-size: 0.68rem;
    min-width: 80px;
  }

  .page-next-btn {
    display: none;
  }

  /* 联系方式 */
  .contact h2 {
    font-size: clamp(1.4rem, 6.5vw, 1.8rem);
  }

  .contact-text {
    margin: 14px 0 0;
  }

  .contact-actions a {
    padding: 10px 14px;
    font-size: 0.85rem;
  }

  /* 计划卡片 */
  .future-grid {
    grid-template-columns: 1fr;
  }

  .product-panel {
    min-height: 180px;
  }

  .panel-wide {
    min-height: 240px;
  }

  /* 履历卡片 */
  .spotlight-panel span {
    font-size: 0.72rem;
  }

  .spotlight-panel h3 {
    font-size: 1.1rem;
  }

  .spotlight-panel p {
    font-size: 0.82rem;
    line-height: 1.5;
  }
}