:root {
  --ink: #071018;
  --ink-2: #0d1b24;
  --foam: #d7f6ef;
  --mist: #9bb6b0;
  --teal: #1fbfa5;
  --teal-deep: #0e7f72;
  --sand: #e7d7b8;
  --line: rgba(215, 246, 239, 0.12);
  --shadow: 0 30px 80px rgba(0, 0, 0, 0.35);
  --font-brand: "ZCOOL XiaoWei", "Noto Sans SC", serif;
  --font-body: "Noto Sans SC", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--foam);
  font-family: var(--font-body);
  background:
    radial-gradient(1200px 700px at 10% -10%, rgba(31, 191, 165, 0.18), transparent 55%),
    radial-gradient(900px 600px at 90% 10%, rgba(231, 215, 184, 0.12), transparent 50%),
    linear-gradient(160deg, #050b10 0%, var(--ink) 45%, #102029 100%);
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

.bg-orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(40px);
  pointer-events: none;
  z-index: 0;
  animation: drift 16s ease-in-out infinite alternate;
}

.bg-orb-a {
  width: 420px;
  height: 420px;
  left: -120px;
  top: 20vh;
  background: rgba(31, 191, 165, 0.2);
}

.bg-orb-b {
  width: 360px;
  height: 360px;
  right: -80px;
  top: 55vh;
  background: rgba(231, 215, 184, 0.12);
  animation-delay: -6s;
}

.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.08;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.topbar,
.hero,
.section,
.footer {
  position: relative;
  z-index: 2;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px clamp(16px, 4vw, 48px);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
  background: rgba(7, 16, 24, 0.55);
  position: sticky;
  top: 0;
  z-index: 10;
}

.logo {
  font-family: var(--font-brand);
  font-size: 28px;
  letter-spacing: 0.04em;
}

.logo span {
  margin-left: 8px;
  color: var(--mist);
  font-family: var(--font-body);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.nav {
  display: flex;
  gap: 18px;
  color: var(--mist);
  font-size: 14px;
}

.nav a:hover,
.top-cta:hover {
  color: var(--foam);
}

.top-cta {
  color: var(--teal);
  font-size: 14px;
  font-weight: 500;
}

.hero {
  min-height: calc(100vh - 70px);
  display: grid;
  align-content: center;
  gap: 18px;
  padding: clamp(48px, 10vh, 120px) clamp(16px, 4vw, 48px) 64px;
  position: relative;
}

.hero-kicker {
  margin: 0;
  color: var(--teal);
  letter-spacing: 0.28em;
  font-size: 12px;
  animation: rise 0.9s ease both;
}

.hero-brand {
  margin: 0;
  font-family: var(--font-brand);
  font-size: clamp(72px, 16vw, 168px);
  line-height: 0.92;
  letter-spacing: 0.08em;
  animation: rise 1s ease both;
  animation-delay: 0.08s;
}

.hero-lead {
  margin: 0;
  max-width: 28ch;
  color: var(--mist);
  font-size: clamp(18px, 2.4vw, 24px);
  line-height: 1.6;
  animation: rise 1s ease both;
  animation-delay: 0.16s;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 8px;
  animation: rise 1s ease both;
  animation-delay: 0.24s;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 14px;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

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

.btn.primary {
  background: linear-gradient(120deg, var(--teal), var(--teal-deep));
  color: #041016;
  font-weight: 700;
}

.btn.ghost {
  border-color: var(--line);
  color: var(--foam);
  background: rgba(255, 255, 255, 0.03);
}

.hero-stage {
  position: absolute;
  right: clamp(16px, 6vw, 80px);
  bottom: 12%;
  width: min(42vw, 460px);
  height: 280px;
  pointer-events: none;
}

.stage-panel {
  position: absolute;
  inset: auto;
  border-radius: 24px;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  animation: floaty 7s ease-in-out infinite;
}

.stage-1 {
  width: 78%;
  height: 68%;
  right: 0;
  top: 0;
  background: linear-gradient(145deg, rgba(31, 191, 165, 0.35), rgba(13, 27, 36, 0.9));
}

.stage-2 {
  width: 62%;
  height: 54%;
  left: 0;
  bottom: 18%;
  background: linear-gradient(160deg, rgba(231, 215, 184, 0.28), rgba(7, 16, 24, 0.92));
  animation-delay: -2s;
}

.stage-3 {
  width: 44%;
  height: 40%;
  right: 18%;
  bottom: 0;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(16, 48, 54, 0.85));
  animation-delay: -4s;
}

.section {
  padding: 88px clamp(16px, 4vw, 48px);
  border-top: 1px solid var(--line);
}

.section-head {
  max-width: 720px;
  margin-bottom: 36px;
}

.section-head h2,
.about-panel h2,
.feature-copy h3,
.product-strip h3,
.pick h3,
.timeline h3 {
  font-family: var(--font-brand);
  font-weight: 400;
  letter-spacing: 0.04em;
}

.section-head h2,
.about-panel h2 {
  margin: 0 0 10px;
  font-size: clamp(32px, 5vw, 48px);
}

.section-head p,
.feature-copy p,
.product-strip p,
.pick p,
.timeline p,
.about-panel p {
  margin: 0;
  color: var(--mist);
  line-height: 1.7;
}

.entry-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.entry {
  min-height: 220px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.015));
  transition: border-color 0.2s ease, transform 0.2s ease, background 0.2s ease;
}

.entry:hover {
  transform: translateY(-4px);
  border-color: rgba(31, 191, 165, 0.45);
  background: linear-gradient(180deg, rgba(31, 191, 165, 0.12), rgba(255, 255, 255, 0.02));
}

.entry-idx {
  display: block;
  margin-bottom: 48px;
  color: var(--teal);
  letter-spacing: 0.16em;
  font-size: 12px;
}

.entry h3 {
  margin: 0 0 10px;
  font-size: 24px;
  font-family: var(--font-brand);
}

.feature {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 28px;
  align-items: center;
  padding: 28px;
  border-radius: 28px;
  border: 1px solid var(--line);
  background: rgba(13, 27, 36, 0.72);
  margin-bottom: 18px;
}

.tag {
  display: inline-block;
  margin-bottom: 10px !important;
  color: var(--sand) !important;
  font-size: 12px;
  letter-spacing: 0.12em;
}

.feature-copy h3 {
  margin: 0 0 12px;
  font-size: 36px;
}

.bullets {
  margin: 18px 0 0;
  padding-left: 18px;
  color: var(--foam);
  line-height: 1.8;
}

.feature-visual {
  display: grid;
  place-items: center;
}

.mock-window {
  width: min(100%, 320px);
  border-radius: 18px;
  border: 1px solid var(--line);
  background: #08151c;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.mock-bar {
  display: flex;
  gap: 6px;
  padding: 12px;
  border-bottom: 1px solid var(--line);
}

.mock-bar span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(215, 246, 239, 0.25);
}

.mock-rows {
  display: grid;
  gap: 10px;
  padding: 16px;
}

.mock-rows div {
  height: 28px;
  border-radius: 8px;
  background: linear-gradient(90deg, rgba(31, 191, 165, 0.25), rgba(255, 255, 255, 0.05));
}

.mock-rows div:nth-child(2) {
  width: 88%;
}
.mock-rows div:nth-child(3) {
  width: 72%;
}
.mock-rows div:nth-child(4) {
  width: 94%;
}

.product-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.product-strip article,
.pick {
  padding: 20px;
  border-radius: 20px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.025);
}

.product-strip h3 {
  margin: 0 0 8px;
  font-size: 24px;
}

.status {
  display: inline-block;
  margin-top: 14px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
}

.status.soon {
  color: var(--sand);
  background: rgba(231, 215, 184, 0.1);
}

.pick-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.pick-art {
  height: 140px;
  border-radius: 14px;
  margin-bottom: 14px;
}

.tone-a {
  background: linear-gradient(135deg, #0b1c33, #1f6f8b 45%, #0d2a2e);
}
.tone-b {
  background: linear-gradient(135deg, #dfe8e4, #9bbfb5 40%, #355e57);
}
.tone-c {
  background: linear-gradient(135deg, #2a2118, #c2a36b 50%, #5b4630);
}
.tone-d {
  background: linear-gradient(135deg, #102229, #1fbfa5 55%, #0a3030);
}
.tone-e {
  background: linear-gradient(135deg, #1a2430, #4d6b7a 40%, #101820);
}
.tone-f {
  background: linear-gradient(135deg, #13251f, #3f8f78 45%, #0d1c18);
}

.pick h3 {
  margin: 0 0 8px;
  font-size: 22px;
}

.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.timeline li {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 18px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.timeline time {
  color: var(--teal);
  font-size: 13px;
  letter-spacing: 0.08em;
}

.timeline h3 {
  margin: 0 0 6px;
  font-size: 22px;
}

.about {
  padding-bottom: 110px;
}

.about-panel {
  max-width: 860px;
  padding: 36px;
  border-radius: 28px;
  border: 1px solid var(--line);
  background:
    linear-gradient(135deg, rgba(31, 191, 165, 0.12), transparent 40%),
    rgba(13, 27, 36, 0.8);
}

.about-panel p + p {
  margin-top: 14px;
}

.about-meta {
  color: var(--sand) !important;
  font-size: 13px;
  letter-spacing: 0.04em;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  padding: 22px clamp(16px, 4vw, 48px) 36px;
  border-top: 1px solid var(--line);
  color: var(--mist);
  font-size: 13px;
}

.footer strong {
  display: block;
  color: var(--foam);
  margin-bottom: 4px;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes floaty {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

@keyframes drift {
  from {
    transform: translate3d(0, 0, 0);
  }
  to {
    transform: translate3d(30px, -24px, 0);
  }
}

@media (max-width: 960px) {
  .nav {
    display: none;
  }

  .entry-grid,
  .product-strip,
  .pick-grid {
    grid-template-columns: 1fr 1fr;
  }

  .feature,
  .timeline li {
    grid-template-columns: 1fr;
  }

  .hero-stage {
    position: relative;
    right: auto;
    bottom: auto;
    width: 100%;
    height: 220px;
    margin-top: 28px;
  }
}

@media (max-width: 640px) {
  .entry-grid,
  .product-strip,
  .pick-grid {
    grid-template-columns: 1fr;
  }

  .top-cta {
    display: none;
  }
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

@media (prefers-reduced-motion: reduce) {
  .reveal,
  .hero-kicker,
  .hero-brand,
  .hero-lead,
  .hero-actions,
  .bg-orb,
  .stage-panel {
    animation: none !important;
    transition: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
}