.official-is-hidden {
  display: none !important;
}

:root {
  --c-primary: #4f46e5;
  --c-primary-light: #6366f1;
  --c-accent: #06b6d4;
  --c-accent-2: #a855f7;
  --c-ink: #0b1220;
  --c-ink-soft: #1e293b;
  --c-muted: #64748b;
  --c-muted-light: #94a3b8;
  --c-border: rgba(15, 23, 42, 0.07);
  --c-bg: #f4f6fb;
  --c-bg-deep: #e8edf7;
  --c-card: #ffffff;
  --gradient-brand: linear-gradient(135deg, #4f46e5 0%, #7c3aed 48%, #06b6d4 100%);
  --gradient-soft: linear-gradient(135deg, rgba(79, 70, 229, 0.12), rgba(6, 182, 212, 0.08));
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 16px 48px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 32px 80px rgba(79, 70, 229, 0.18);
  --shadow-glow: 0 0 0 1px rgba(79, 70, 229, 0.08), 0 24px 48px rgba(79, 70, 229, 0.12);
  --radius: 16px;
  --radius-lg: 24px;
  --header-h: 76px;
  --max-w: 1200px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
}

body.official-page {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--c-ink);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

.official-container {
  width: min(var(--max-w), calc(100% - 48px));
  margin: 0 auto;
}

/* ── Header ── */
.official-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  transition: background 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.35s var(--ease);
  border-bottom: 1px solid transparent;
}

.official-header.is-scrolled {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(20px) saturate(1.4);
  border-bottom-color: var(--c-border);
  box-shadow: var(--shadow-sm);
}

.official-header__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.official-brand {
  display: flex;
  align-items: center;
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -0.03em;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.official-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid var(--c-border);
}

.official-header.is-scrolled .official-nav {
  background: rgba(244, 246, 251, 0.9);
}

.official-nav a {
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  color: var(--c-muted);
  transition: color 0.2s, background 0.2s;
}

.official-nav a:hover,
.official-nav a.is-active {
  color: var(--c-primary);
  background: #fff;
  box-shadow: var(--shadow-sm);
}

.official-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.official-btn--primary {
  color: #fff;
  background: var(--gradient-brand);
  box-shadow: 0 10px 28px rgba(79, 70, 229, 0.35);
}

.official-btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 40px rgba(79, 70, 229, 0.42);
}

.official-btn--outline {
  color: var(--c-ink-soft);
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid rgba(15, 23, 42, 0.1);
  backdrop-filter: blur(8px);
}

.official-btn--outline:hover {
  border-color: rgba(79, 70, 229, 0.35);
  color: var(--c-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

/* ── Hero ── */
.official-hero {
  position: relative;
  min-height: 100vh;
  padding: calc(var(--header-h) + 48px) 0 100px;
  overflow: hidden;
}

.official-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse 90% 70% at 85% 0%, rgba(124, 58, 237, 0.22), transparent 55%),
    radial-gradient(ellipse 70% 60% at 5% 30%, rgba(6, 182, 212, 0.18), transparent 50%),
    radial-gradient(ellipse 50% 40% at 50% 100%, rgba(79, 70, 229, 0.08), transparent),
    linear-gradient(165deg, #eef2ff 0%, #f8fafc 42%, var(--c-bg) 100%);
}

.official-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.official-hero__blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.5;
  pointer-events: none;
  animation: official-float 12s ease-in-out infinite;
}

.official-hero__blob--1 {
  width: 420px;
  height: 420px;
  top: -80px;
  right: -60px;
  background: rgba(124, 58, 237, 0.35);
}

.official-hero__blob--2 {
  width: 320px;
  height: 320px;
  bottom: 10%;
  left: -80px;
  background: rgba(6, 182, 212, 0.3);
  animation-delay: -4s;
}

@keyframes official-float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(20px, -16px) scale(1.05); }
}

.official-hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px 8px 10px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  color: var(--c-primary);
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(79, 70, 229, 0.15);
  box-shadow: var(--shadow-sm);
  margin-bottom: 24px;
}

.official-hero__badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #22c55e;
  box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.25);
  animation: official-pulse 2s ease infinite;
}

@keyframes official-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.official-hero h1 {
  margin: 0 0 20px;
  font-size: clamp(36px, 5vw, 52px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.035em;
  color: var(--c-ink);
}

.official-hero h1 em {
  font-style: normal;
  display: block;
  margin-top: 6px;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.official-hero__lead {
  margin: 0 0 32px;
  font-size: 17px;
  line-height: 1.8;
  color: var(--c-muted);
  max-width: 520px;
}

.official-hero__platforms {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 32px;
}

.official-hero__platform {
  padding: 6px 14px;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 600;
  color: var(--c-ink-soft);
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid var(--c-border);
}

.official-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 40px;
}

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

.official-stat {
  padding: 18px 16px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.official-stat:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.official-stat strong {
  display: block;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 6px;
}

.official-stat span {
  font-size: 12px;
  color: var(--c-muted);
  line-height: 1.4;
}

/* Hero visual mockup */
.official-hero__visual {
  position: relative;
  min-height: 440px;
}

.official-mock {
  position: relative;
  padding: 24px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(24px);
  box-shadow: var(--shadow-glow);
}

.official-mock__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--c-border);
}

.official-mock__title {
  font-size: 14px;
  font-weight: 700;
  color: var(--c-ink);
}

.official-mock__dots {
  display: flex;
  gap: 6px;
}

.official-mock__dots i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #e2e8f0;
}

.official-mock__dots i:first-child { background: #f87171; }
.official-mock__dots i:nth-child(2) { background: #fbbf24; }
.official-mock__dots i:nth-child(3) { background: #4ade80; }

.official-mock__cards {
  display: grid;
  gap: 12px;
}

.official-mock__card {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px;
  border-radius: 14px;
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  transition: transform 0.3s var(--ease);
}

.official-mock__card:hover {
  transform: translateX(4px);
}

.official-mock__card-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.official-mock__card-icon--1 {
  background: linear-gradient(135deg, rgba(79, 70, 229, 0.15), rgba(124, 58, 237, 0.2));
  color: var(--c-primary);
}

.official-mock__card-icon--2 {
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.15), rgba(34, 211, 238, 0.2));
  color: #0891b2;
}

.official-mock__card-icon--3 {
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.15), rgba(74, 222, 128, 0.2));
  color: #16a34a;
}

.official-mock__card h4 {
  margin: 0 0 4px;
  font-size: 14px;
  font-weight: 700;
}

.official-mock__card p {
  margin: 0;
  font-size: 12px;
  color: var(--c-muted);
  line-height: 1.5;
}

.official-mock__card h4 {
  margin: 0 0 4px;
  font-size: 14px;
  font-weight: 700;
  color: var(--c-ink);
}

.official-mock__card-icon svg {
  width: 22px;
  height: 22px;
}

.official-reveal.is-visible,
.official-hero__grid.official-reveal {
  opacity: 1;
  transform: none;
}

.official-mock__float {
  position: absolute;
  padding: 12px 16px;
  border-radius: 12px;
  background: #fff;
  border: 1px solid var(--c-border);
  box-shadow: var(--shadow-md);
  font-size: 12px;
  font-weight: 600;
  animation: official-float 8s ease-in-out infinite;
}

.official-mock__float--1 {
  top: -12px;
  right: -16px;
  color: var(--c-primary);
}

.official-mock__float--2 {
  bottom: 24px;
  left: -24px;
  color: #0891b2;
  animation-delay: -3s;
}

.official-mock__float strong {
  display: block;
  font-size: 18px;
  margin-bottom: 2px;
}

/* ── Sections ── */
.official-section {
  padding: 100px 0;
  position: relative;
}

.official-section--alt {
  background: #fff;
}

.official-section--mesh::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 50% at 50% 0%, rgba(79, 70, 229, 0.04), transparent);
  pointer-events: none;
}

.official-section__label {
  display: inline-block;
  padding: 6px 14px;
  margin-bottom: 14px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--c-primary);
  background: var(--gradient-soft);
  border: 1px solid rgba(79, 70, 229, 0.12);
}

.official-section__head {
  text-align: center;
  max-width: 580px;
  margin: 0 auto 56px;
}

.official-section__head h2 {
  margin: 0 0 14px;
  font-size: clamp(28px, 3.5vw, 38px);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--c-ink);
}

.official-section__head p {
  margin: 0;
  color: var(--c-muted);
  font-size: 16px;
  line-height: 1.75;
}

/* Process timeline */
.official-process {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  position: relative;
}

.official-process::before {
  content: "";
  position: absolute;
  top: 28px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(79, 70, 229, 0.2) 15%, rgba(6, 182, 212, 0.2) 85%, transparent);
  z-index: 0;
}

.official-process__item {
  position: relative;
  z-index: 1;
  padding: 0 12px 0;
  text-align: center;
}

.official-process__step {
  width: 56px;
  height: 56px;
  margin: 0 auto 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 800;
  color: #fff;
  background: var(--gradient-brand);
  box-shadow: 0 8px 24px rgba(79, 70, 229, 0.35);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.official-process__item:hover .official-process__step {
  transform: scale(1.08);
  box-shadow: 0 12px 32px rgba(79, 70, 229, 0.45);
}

.official-process__body {
  padding: 20px 16px;
  border-radius: var(--radius);
  background: var(--c-card);
  border: 1px solid var(--c-border);
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.official-process__item:hover .official-process__body {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.official-process__item h4 {
  margin: 0 0 8px;
  font-size: 15px;
  font-weight: 700;
}

.official-process__item p {
  margin: 0;
  font-size: 13px;
  color: var(--c-muted);
  line-height: 1.6;
}

/* Business modules */
.official-modules {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.official-module {
  position: relative;
  padding: 32px;
  border-radius: var(--radius-lg);
  background: var(--c-card);
  border: 1px solid var(--c-border);
  overflow: hidden;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

.official-module::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-brand);
  opacity: 0;
  transition: opacity 0.3s;
}

.official-module:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.official-module:hover::before {
  opacity: 1;
}

.official-module--blue::before { background: linear-gradient(90deg, #4f46e5, #6366f1); }
.official-module--purple::before { background: linear-gradient(90deg, #7c3aed, #a855f7); }
.official-module--green::before { background: linear-gradient(90deg, #059669, #10b981); }
.official-module--amber::before { background: linear-gradient(90deg, #d97706, #f59e0b); }

.official-module__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 18px;
}

.official-module__icon {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.official-module__icon svg {
  width: 26px;
  height: 26px;
}

.official-module__icon--blue {
  background: linear-gradient(135deg, rgba(79, 70, 229, 0.12), rgba(99, 102, 241, 0.18));
  color: var(--c-primary);
}

.official-module__icon--purple {
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.12), rgba(168, 85, 247, 0.18));
  color: #7c3aed;
}

.official-module__icon--green {
  background: linear-gradient(135deg, rgba(5, 150, 105, 0.12), rgba(16, 185, 129, 0.18));
  color: #059669;
}

.official-module__icon--amber {
  background: linear-gradient(135deg, rgba(217, 119, 6, 0.12), rgba(245, 158, 11, 0.18));
  color: #d97706;
}

.official-module__num {
  font-size: 48px;
  font-weight: 800;
  line-height: 1;
  color: rgba(15, 23, 42, 0.04);
  letter-spacing: -0.04em;
}

.official-module h3 {
  margin: 0 0 10px;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.official-module > p {
  margin: 0 0 18px;
  font-size: 14px;
  color: var(--c-muted);
  line-height: 1.7;
}

.official-module ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.official-module li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 13px;
  color: var(--c-ink-soft);
  line-height: 1.5;
}

.official-module li::before {
  content: "";
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  margin-top: 1px;
  border-radius: 50%;
  background: var(--gradient-soft) center/10px no-repeat;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath fill='%234f46e5' d='M10 3L5 9 2 6l1-1 2 2 4-5z'/%3E%3C/svg%3E");
  background-color: rgba(79, 70, 229, 0.08);
  background-repeat: no-repeat;
  background-position: center;
}

/* CTA strip */
.official-cta {
  margin-top: 0;
  padding: 64px 0 100px;
}

.official-cta__inner {
  padding: 48px 56px;
  border-radius: var(--radius-lg);
  text-align: center;
  background: var(--gradient-brand);
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.official-cta__inner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.06'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.6;
}

.official-cta__inner h2 {
  position: relative;
  margin: 0 0 12px;
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.02em;
}

.official-cta__inner p {
  position: relative;
  margin: 0 0 28px;
  font-size: 16px;
  color: rgba(255, 255, 255, 0.88);
  line-height: 1.7;
}

.official-cta__inner .official-btn--outline {
  position: relative;
  background: #fff;
  color: var(--c-primary);
  border: none;
  font-weight: 700;
}

/* Cases (hidden) */
.official-cases {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.official-case {
  padding: 28px;
  border-radius: var(--radius-lg);
  background: var(--c-card);
  border: 1px solid var(--c-border);
  box-shadow: var(--shadow-sm);
}

/* Scroll reveal */
.official-reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

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

/* Modal */
.official-modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(11, 18, 32, 0.5);
  backdrop-filter: blur(6px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s, visibility 0.25s;
}

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

.official-modal__dialog {
  position: relative;
  width: min(440px, 100%);
  padding: 36px;
  border-radius: var(--radius-lg);
  background: #fff;
  box-shadow: var(--shadow-lg);
}

.official-nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--c-border);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.9);
  cursor: pointer;
  font-size: 18px;
}

@media (max-width: 1024px) {
  .official-hero__grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .official-hero__visual {
    min-height: auto;
    max-width: 520px;
    margin: 0 auto;
  }

  .official-process {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .official-process::before {
    display: none;
  }

  .official-modules {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .official-container {
    width: calc(100% - 32px);
  }

  .official-nav {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    padding: 16px;
    border-radius: 0;
    border: none;
    border-bottom: 1px solid var(--c-border);
    background: #fff;
    gap: 4px;
  }

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

  .official-nav a {
    width: 100%;
    text-align: center;
    border-radius: 12px;
  }

  .official-nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .official-stats {
    grid-template-columns: 1fr;
  }

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

  .official-hero__actions .official-btn {
    width: 100%;
  }

  .official-cta__inner {
    padding: 36px 24px;
  }

  .official-mock__float {
    display: none;
  }
}