:root {
  --brand-blue: #1711b4;
  --brand-blue-deep: #07045d;
  --ink: #11131d;
  --muted: #6f7384;
  --line: rgba(23, 17, 180, 0.16);
  --surface: #f7f8fb;
  --surface-warm: #fffaf0;
  --citrus: #ffb21a;
  --lime: #a8f246;
  --berry: #641948;
  --radius: 8px;
  --max: 1180px;
  --shadow: 0 26px 80px rgba(10, 14, 42, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  font-family: "Avenir Next", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background:
    linear-gradient(90deg, rgba(23, 17, 180, 0.045) 1px, transparent 1px),
    linear-gradient(180deg, rgba(23, 17, 180, 0.04) 1px, transparent 1px),
    var(--surface);
  background-size: 48px 48px;
}

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

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

button,
input,
textarea {
  font: inherit;
}

.site-header {
  position: fixed;
  top: 18px;
  left: 50%;
  z-index: 20;
  width: min(calc(100% - 32px), var(--max));
  height: 66px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 10px;
  border: 1px solid rgba(255, 255, 255, 0.36);
  border-radius: var(--radius);
  background: rgba(247, 248, 251, 0.78);
  box-shadow: 0 20px 60px rgba(8, 8, 36, 0.12);
  backdrop-filter: blur(18px);
  transform: translateX(-50%);
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-mark img {
  width: 48px;
  height: 48px;
  border-radius: 7px;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.4);
}

.brand-mark span {
  display: grid;
  gap: 2px;
}

.brand-mark strong {
  font-size: 18px;
  letter-spacing: 0;
}

.brand-mark small {
  color: var(--brand-blue);
  font-size: 10px;
  font-weight: 800;
}

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

.site-nav a {
  padding: 12px 16px;
  border-radius: 6px;
  color: rgba(17, 19, 29, 0.78);
  font-size: 14px;
  font-weight: 700;
}

.site-nav a:hover {
  color: #fff;
  background: var(--brand-blue);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 6px;
  background: var(--brand-blue);
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 6px auto;
  background: #fff;
}

.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 1.05fr);
  align-items: center;
  gap: 36px;
  padding: 128px max(28px, calc((100vw - var(--max)) / 2)) 78px;
  overflow: hidden;
  color: #fff;
  background:
    radial-gradient(circle at 78% 22%, rgba(168, 242, 70, 0.28), transparent 20%),
    radial-gradient(circle at 58% 76%, rgba(255, 178, 26, 0.22), transparent 20%),
    linear-gradient(135deg, var(--brand-blue), #080452 72%);
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 9vh;
  background: linear-gradient(180deg, transparent, var(--surface));
}

.hero-grid {
  position: absolute;
  inset: 0;
  opacity: 0.26;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.16) 1px, transparent 1px),
    linear-gradient(180deg, rgba(255, 255, 255, 0.12) 1px, transparent 1px);
  background-size: 58px 58px;
  mask-image: linear-gradient(90deg, #000, transparent 82%);
}

.hero-copy,
.hero-stage {
  position: relative;
  z-index: 1;
}

.eyebrow,
.section-kicker {
  margin: 0 0 16px;
  color: var(--lime);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  font-family: "Songti SC", "STSong", "PingFang SC", serif;
  font-size: clamp(72px, 11vw, 152px);
  line-height: 0.88;
  letter-spacing: 0;
}

.hero-subtitle {
  width: min(520px, 100%);
  margin: 28px 0 0;
  color: rgba(255, 255, 255, 0.78);
  font-size: clamp(18px, 2.2vw, 24px);
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 36px;
}

.primary-link,
.ghost-link,
.contact-form button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 6px;
  font-weight: 900;
}

.primary-link,
.contact-form button {
  color: var(--brand-blue-deep);
  background: var(--lime);
}

.ghost-link {
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.32);
}

.hero-stage {
  min-height: 620px;
  display: grid;
  place-items: center;
}

.hero-stage::before {
  content: "";
  position: absolute;
  width: min(520px, 82vw);
  aspect-ratio: 1;
  border: 1px solid rgba(255, 255, 255, 0.26);
  border-radius: 50%;
  background:
    linear-gradient(90deg, transparent 49%, rgba(255, 255, 255, 0.12) 50%, transparent 51%),
    linear-gradient(180deg, transparent 49%, rgba(255, 255, 255, 0.12) 50%, transparent 51%);
  animation: pulseRing 6s ease-in-out infinite;
}

.orbit-label {
  position: absolute;
  top: 11%;
  right: 9%;
  z-index: 2;
  color: rgba(255, 255, 255, 0.28);
  font-size: clamp(48px, 8vw, 104px);
  font-weight: 950;
  line-height: 0.8;
  text-align: right;
}

.hero-drink {
  position: absolute;
  width: min(420px, 62vw);
  max-height: 78vh;
  object-fit: contain;
  filter: drop-shadow(0 34px 44px rgba(0, 0, 0, 0.38));
  opacity: 0;
  transform: translateY(28px) rotate(-3deg) scale(0.92);
  transition: opacity 800ms ease, transform 900ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.hero-drink.active {
  opacity: 1;
  transform: translateY(0) rotate(2deg) scale(1);
}

.stage-readout {
  position: absolute;
  right: 0;
  bottom: 10%;
  display: grid;
  gap: 8px;
  width: min(240px, 54vw);
  padding: 16px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(10px);
}

.stage-readout span {
  display: flex;
  justify-content: space-between;
  color: rgba(255, 255, 255, 0.8);
  font-size: 11px;
  font-weight: 900;
}

.intro-band,
.section,
.feature-panel,
.visuals,
.contact-band,
.site-footer {
  width: min(calc(100% - 40px), var(--max));
  margin-inline: auto;
}

.intro-band {
  display: grid;
  grid-template-columns: 0.85fr 1fr;
  gap: 40px;
  align-items: end;
  padding: 86px 0 72px;
  border-bottom: 1px solid var(--line);
}

.intro-band h2,
.section-heading h2,
.feature-copy h2,
.contact-copy h2 {
  margin: 0;
  font-family: "Songti SC", "STSong", "PingFang SC", serif;
  font-size: clamp(34px, 5vw, 64px);
  line-height: 1.05;
  letter-spacing: 0;
}

.intro-band p,
.feature-copy p,
.contact-copy p {
  margin: 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.8;
}

.section {
  padding: 86px 0;
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(0, 1fr);
  align-items: end;
  gap: 34px;
  margin-bottom: 42px;
}

.product-rail {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.product-card {
  position: relative;
  min-height: 430px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.86), rgba(255, 255, 255, 0.58)),
    linear-gradient(135deg, rgba(23, 17, 180, 0.08), transparent);
  overflow: hidden;
}

.product-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-top: 4px solid var(--brand-blue);
  opacity: 0.88;
}

.product-card img {
  height: 250px;
  width: 100%;
  object-fit: contain;
  margin: 38px 0 12px;
  filter: drop-shadow(0 22px 22px rgba(22, 18, 60, 0.18));
  transform: translateY(0);
  transition: transform 450ms ease;
}

.product-card:hover img {
  transform: translateY(-8px) rotate(1deg);
}

.product-index {
  position: absolute;
  top: 18px;
  right: 18px;
  color: rgba(23, 17, 180, 0.18);
  font-size: 48px;
  font-weight: 950;
}

.product-card h3 {
  margin: 0 0 10px;
  font-size: 22px;
}

.product-card p,
.process-item p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

.feature-panel {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
  gap: 28px;
  align-items: stretch;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(23, 17, 180, 0.96), rgba(6, 5, 58, 0.96)),
    var(--brand-blue);
  box-shadow: var(--shadow);
}

.feature-panel img {
  height: 100%;
  min-height: 380px;
  object-fit: cover;
  border-radius: 6px;
}

.feature-copy {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 22px;
  padding: 28px;
  color: #fff;
}

.feature-copy p {
  color: rgba(255, 255, 255, 0.72);
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.process-item {
  min-height: 240px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.62);
}

.process-item span {
  display: inline-grid;
  place-items: center;
  width: 44px;
  height: 44px;
  margin-bottom: 34px;
  color: #fff;
  border-radius: 50%;
  background: var(--brand-blue);
  font-weight: 950;
}

.process-item h3 {
  margin: 0 0 10px;
  font-size: 24px;
}

.visuals {
  padding: 86px 0;
}

.visual-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  grid-auto-rows: 290px;
  gap: 16px;
}

.visual-tile {
  position: relative;
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius);
  background: #fff;
}

.visual-tile.wide {
  grid-row: span 2;
}

.visual-tile img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 650ms ease;
}

.visual-tile:hover img {
  transform: scale(1.035);
}

.visual-tile figcaption {
  position: absolute;
  left: 14px;
  bottom: 14px;
  padding: 8px 12px;
  border-radius: 6px;
  color: #fff;
  background: rgba(7, 4, 93, 0.72);
  font-size: 13px;
  font-weight: 900;
  backdrop-filter: blur(8px);
}

.contact-band {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(320px, 0.72fr);
  gap: 54px;
  align-items: start;
  padding: 84px 0;
  border-top: 1px solid var(--line);
}

.contact-form {
  display: grid;
  gap: 14px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.74);
  box-shadow: var(--shadow);
}

.contact-form label {
  display: grid;
  gap: 8px;
}

.contact-form span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid rgba(23, 17, 180, 0.16);
  border-radius: 6px;
  padding: 14px 14px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.86);
  outline: none;
  resize: vertical;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--brand-blue);
  box-shadow: 0 0 0 4px rgba(23, 17, 180, 0.1);
}

.contact-form button {
  border: 0;
  cursor: pointer;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 28px 0 44px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 700ms ease, transform 700ms ease;
}

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

@keyframes pulseRing {
  0%,
  100% {
    transform: scale(0.96);
    opacity: 0.65;
  }
  50% {
    transform: scale(1.04);
    opacity: 1;
  }
}

@media (max-width: 980px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: 116px;
  }

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

  .stage-readout {
    right: 24px;
  }

  .intro-band,
  .section-heading,
  .feature-panel,
  .contact-band {
    grid-template-columns: 1fr;
  }

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

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

@media (max-width: 720px) {
  body {
    background-size: 36px 36px;
  }

  .site-header {
    top: 10px;
    width: calc(100% - 20px);
  }

  .brand-mark strong {
    font-size: 16px;
  }

  .menu-toggle {
    display: block;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    display: grid;
    padding: 8px;
    border: 1px solid rgba(23, 17, 180, 0.12);
    border-radius: var(--radius);
    background: rgba(247, 248, 251, 0.96);
    box-shadow: 0 18px 44px rgba(8, 8, 36, 0.12);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-8px);
    transition: opacity 220ms ease, transform 220ms ease;
  }

  .site-nav.open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

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

  .hero {
    min-height: auto;
    padding-inline: 20px;
    padding-bottom: 58px;
    gap: 4px;
  }

  .hero h1 {
    font-size: clamp(66px, 23vw, 108px);
  }

  .hero-subtitle {
    font-size: 17px;
  }

  .hero-stage {
    min-height: 470px;
  }

  .hero-drink {
    width: min(330px, 82vw);
    max-height: 520px;
  }

  .orbit-label {
    top: 8%;
    right: 4%;
    font-size: 52px;
  }

  .stage-readout {
    right: 0;
    bottom: 4%;
  }

  .intro-band,
  .section,
  .visuals,
  .contact-band {
    width: min(calc(100% - 28px), var(--max));
    padding-block: 58px;
  }

  .product-rail,
  .visual-grid {
    grid-template-columns: 1fr;
  }

  .product-card {
    min-height: 390px;
  }

  .product-card img {
    height: 230px;
  }

  .feature-panel {
    width: min(calc(100% - 28px), var(--max));
    padding: 12px;
  }

  .feature-panel img {
    min-height: 260px;
  }

  .feature-copy {
    padding: 18px 8px 8px;
  }

  .visual-grid {
    grid-auto-rows: 245px;
  }

  .visual-tile.wide {
    grid-row: span 1;
  }

  .site-footer {
    flex-direction: column;
    width: min(calc(100% - 28px), var(--max));
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 1ms !important;
    transition-duration: 1ms !important;
  }
}