:root {
  --blue: #0072bc;
  --blue-deep: #0a4f82;
  --blue-soft: #e8f4fc;
  --ink: #142033;
  --muted: #5b6b7c;
  --paper: #f4f7fa;
  --white: #ffffff;
  --gold: #d4a017;
  --font-display: "Outfit", "Noto Sans SC", sans-serif;
  --font-body: "Noto Sans SC", sans-serif;
  --max: 1120px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
}

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

img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.wrap {
  width: min(100% - 40px, var(--max));
  margin: 0 auto;
}

/* nav */
.nav {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 28px;
  background: rgba(244, 247, 250, 0.82);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(20, 32, 51, 0.06);
}

.nav-brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.nav-mark {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--blue);
  font-size: 14px;
}

.nav-name {
  font-weight: 700;
  font-size: 18px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  font-size: 14px;
  color: var(--muted);
}

.nav-links a:hover {
  color: var(--blue);
}

.nav-cta {
  padding: 10px 16px;
  border-radius: 999px;
  background: var(--blue);
  color: var(--white) !important;
  font-weight: 600;
}

/* hero */
.hero {
  position: relative;
  min-height: 100vh;
  display: grid;
  align-items: end;
  overflow: hidden;
}

.hero-media {
  position: absolute;
  inset: 0;
  animation: rise 1.2s ease both;
}

.hero-media img {
  transform: scale(1.04);
  animation: drift 18s ease-in-out infinite alternate;
}

.hero-veil {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(10, 40, 70, 0.25) 0%, rgba(10, 40, 70, 0.55) 45%, rgba(8, 28, 48, 0.88) 100%),
    linear-gradient(90deg, rgba(8, 28, 48, 0.55), transparent 55%);
}

.hero-copy {
  position: relative;
  z-index: 1;
  width: min(100% - 48px, var(--max));
  margin: 0 auto 12vh;
  color: var(--white);
  animation: fadeUp 0.9s 0.15s ease both;
}

.brand-en {
  font-family: var(--font-display);
  letter-spacing: 0.28em;
  font-size: 13px;
  opacity: 0.85;
  margin-bottom: 14px;
}

.brand-zh {
  font-size: clamp(48px, 8vw, 88px);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: 0.04em;
  margin-bottom: 18px;
}

.hero-lead {
  max-width: 34em;
  font-size: clamp(16px, 2.2vw, 20px);
  opacity: 0.92;
  margin-bottom: 28px;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 15px;
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease;
}

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

.btn.primary {
  background: var(--white);
  color: var(--blue-deep);
}

.btn.ghost {
  border: 1.5px solid rgba(255, 255, 255, 0.65);
  color: var(--white);
}

/* story */
.story {
  padding: 96px 0 72px;
  background:
    radial-gradient(900px 400px at 10% 0%, rgba(0, 114, 188, 0.1), transparent 60%),
    var(--paper);
}

.eyebrow {
  font-family: var(--font-display);
  letter-spacing: 0.22em;
  font-size: 12px;
  color: var(--blue);
  font-weight: 700;
  margin-bottom: 14px;
}

.eyebrow.light {
  color: rgba(255, 255, 255, 0.75);
}

.story h2,
.pillars h2,
.vision h2,
.miniapp h2 {
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.25;
  margin-bottom: 18px;
  max-width: 16em;
}

.story-text {
  max-width: 40em;
  color: var(--muted);
  font-size: 17px;
}

/* pillars */
.pillars {
  padding: 24px 0 96px;
}

.pillar-grid {
  margin-top: 36px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.pillar {
  padding: 28px 24px 32px;
  border-radius: 20px;
  background: var(--white);
  border: 1px solid rgba(0, 114, 188, 0.08);
  box-shadow: 0 12px 40px rgba(20, 50, 80, 0.05);
  animation: fadeUp 0.8s ease both;
}

.pillar:nth-child(2) {
  animation-delay: 0.08s;
}

.pillar:nth-child(3) {
  animation-delay: 0.16s;
}

.pillar-no {
  display: block;
  font-family: var(--font-display);
  color: var(--blue);
  font-weight: 800;
  margin-bottom: 18px;
  letter-spacing: 0.06em;
}

.pillar h3 {
  font-size: 22px;
  margin-bottom: 10px;
}

.pillar p {
  color: var(--muted);
  font-size: 15px;
}

/* vision */
.vision {
  padding: 88px 0;
  background:
    linear-gradient(135deg, var(--blue-deep), var(--blue) 55%, #1a8fd0);
  color: var(--white);
}

.vision-inner {
  text-align: center;
}

.vision h2 {
  margin-left: auto;
  margin-right: auto;
}

.vision p {
  max-width: 34em;
  margin: 0 auto;
  opacity: 0.9;
}

/* miniapp */
.miniapp {
  padding: 96px 0;
  background: var(--white);
}

.miniapp-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 48px;
  align-items: center;
}

.miniapp-text {
  color: var(--muted);
  margin-bottom: 22px;
  max-width: 36em;
}

.steps {
  padding-left: 1.2em;
  color: var(--ink);
  display: grid;
  gap: 10px;
}

.qr-panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}

.qr-box {
  width: 220px;
  height: 220px;
  border-radius: 24px;
  border: 2px dashed rgba(0, 114, 188, 0.35);
  background:
    linear-gradient(160deg, var(--blue-soft), #fff 70%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--blue-deep);
  font-weight: 700;
}

.qr-hint {
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
}

.qr-caption {
  font-family: var(--font-display);
  letter-spacing: 0.08em;
  font-size: 13px;
  color: var(--muted);
}

/* footer */
.footer {
  padding: 36px 0 48px;
  background: #0d1b2a;
  color: rgba(255, 255, 255, 0.82);
}

.footer-row {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.footer strong {
  display: block;
  color: #fff;
  font-size: 18px;
  margin-bottom: 6px;
}

.footer-meta {
  text-align: right;
  font-size: 13px;
  opacity: 0.8;
}

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

@keyframes rise {
  from {
    opacity: 0.4;
    transform: scale(1.06);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes drift {
  from {
    transform: scale(1.04) translate3d(0, 0, 0);
  }
  to {
    transform: scale(1.08) translate3d(-1.5%, -1%, 0);
  }
}

@media (max-width: 860px) {
  .nav-links a:not(.nav-cta) {
    display: none;
  }

  .pillar-grid,
  .miniapp-grid {
    grid-template-columns: 1fr;
  }

  .hero-copy {
    margin-bottom: 10vh;
  }

  .footer-meta {
    text-align: left;
  }
}