:root {
  --bg-1: #e2f4fb;
  --bg-2: #c3e7f5;
  --bg-3: #9ad1e8;
  --panel: rgba(255, 255, 255, 0.72);
  --panel-strong: rgba(255, 255, 255, 0.9);
  --text: #0d2a3c;
  --text-soft: #1f4f68;
  --brand: #12b9ad;
  --brand-2: #ffbf69;
  --line: rgba(24, 98, 132, 0.26);
  --shadow: 0 20px 60px rgba(18, 63, 90, 0.2);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background: linear-gradient(130deg, var(--bg-1), var(--bg-2) 50%, var(--bg-3));
  font-family: "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.65;
}

h1,
h2,
h3 {
  font-family: "STZhongsong", "Noto Serif SC", "Songti SC", serif;
  line-height: 1.25;
  margin: 0;
}

p {
  margin: 0;
}

.site-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 85% 15%, rgba(255, 191, 105, 0.14), transparent 35%),
    radial-gradient(circle at 15% 10%, rgba(18, 185, 173, 0.18), transparent 42%),
    radial-gradient(circle at 45% 85%, rgba(30, 123, 173, 0.2), transparent 48%);
  z-index: -1;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px min(4vw, 50px);
  background: rgba(236, 248, 254, 0.82);
  border-bottom: 1px solid rgba(129, 184, 211, 0.25);
  backdrop-filter: blur(16px);
}

.brand {
  text-decoration: none;
  color: var(--text);
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand-cn {
  font-weight: 700;
  letter-spacing: 0.08em;
}

.brand-en {
  font-size: 12px;
  color: var(--text-soft);
  letter-spacing: 0.14em;
}

.nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav a {
  color: #24495e;
  text-decoration: none;
  padding: 8px 12px;
  border-radius: 999px;
  transition: all 0.25s ease;
}

.nav a:hover {
  color: #08354e;
  background: rgba(255, 255, 255, 0.78);
}

.section {
  width: min(1200px, calc(100% - 40px));
  margin: 0 auto;
  padding: clamp(52px, 8vw, 96px) 0;
}

.hero {
  display: grid;
  gap: 34px;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  min-height: calc(100vh - 80px);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: #a9d5e9;
  font-size: 13px;
  margin-bottom: 12px;
}

.eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: #6cb6d7;
}

.hero h1 {
  font-size: clamp(30px, 4.1vw, 62px);
  margin-bottom: 16px;
}

.lead {
  color: var(--text-soft);
  max-width: 60ch;
}

.cta-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 26px;
}

.btn {
  text-decoration: none;
  border-radius: 999px;
  padding: 12px 20px;
  border: 1px solid transparent;
  transition: all 0.25s ease;
}

.btn-primary {
  color: #06222f;
  font-weight: 700;
  background: linear-gradient(90deg, var(--brand), #56d6cc);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 26px rgba(18, 185, 173, 0.3);
}

.btn-ghost {
  color: var(--text);
  border-color: rgba(166, 214, 233, 0.4);
  background: rgba(5, 31, 45, 0.48);
}

.btn-ghost:hover {
  border-color: rgba(255, 191, 105, 0.75);
  color: #ffe2b6;
}

.hero-visual {
  position: relative;
}

.hero-glass {
  border: 1px solid var(--line);
  background: var(--panel-strong);
  border-radius: 24px;
  padding: 10px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.hero-glass img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 16px;
  display: block;
}

.hero-metrics {
  margin-top: 14px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.metric {
  padding: 14px;
  border-radius: 16px;
  background: linear-gradient(145deg, rgba(232, 247, 253, 0.95), rgba(201, 232, 246, 0.95));
  border: 1px solid var(--line);
  text-align: center;
}

.metric h3 {
  font-size: clamp(24px, 2.8vw, 34px);
  color: #0f4c67;
}

.metric p {
  color: var(--text-soft);
  font-size: 13px;
}

.section-head {
  margin-bottom: 28px;
}

.section-head h2 {
  font-size: clamp(24px, 3vw, 42px);
}

.grid-3 {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card {
  background: linear-gradient(160deg, rgba(241, 251, 255, 0.92), rgba(214, 238, 249, 0.92));
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 22px;
  box-shadow: var(--shadow);
}

.card h3 {
  margin-bottom: 10px;
  color: #0f4865;
}

.card p {
  color: var(--text-soft);
}

.pain-section {
  position: relative;
}

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

.pain-item {
  border-radius: 18px;
  padding: 18px;
  border: 1px solid var(--line);
  background: rgba(249, 254, 255, 0.8);
}

.pain-item h3 {
  margin-bottom: 10px;
  font-size: 20px;
}

.pain-item p {
  color: var(--text-soft);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.product {
  display: grid;
  gap: 16px;
  grid-template-columns: 190px 1fr;
  align-items: center;
}

.product img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: 14px;
  border: 1px solid var(--line);
}

.service-steps {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
}

.step {
  padding: 16px;
  border-radius: 14px;
  background: var(--panel);
  border: 1px solid var(--line);
}

.step span {
  display: inline-block;
  font-weight: 700;
  color: var(--brand-2);
  margin-bottom: 8px;
}

.step p {
  color: #204f67;
  font-size: 14px;
}

.service-commitment {
  margin-top: 14px;
  border-radius: 14px;
  border: 1px solid rgba(238, 168, 75, 0.48);
  background: linear-gradient(90deg, rgba(255, 196, 119, 0.42), rgba(255, 210, 151, 0.26));
  padding: 16px;
}

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

.badge {
  background:
    linear-gradient(145deg, rgba(242, 251, 255, 0.9), rgba(214, 237, 248, 0.9)),
    repeating-linear-gradient(45deg, transparent, transparent 12px, rgba(255, 255, 255, 0.015) 12px, rgba(255, 255, 255, 0.015) 24px);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 20px;
}

.badge h3 {
  margin-bottom: 8px;
}

.badge p {
  color: var(--text-soft);
}

.deck-note {
  color: var(--text-soft);
  margin-bottom: 16px;
}

.deck-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 12px;
}

.deck-card {
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  background: rgba(8, 31, 46, 0.85);
  cursor: pointer;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.deck-card:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 191, 105, 0.55);
}

.deck-card img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
}

.deck-meta {
  padding: 10px;
}

.deck-meta h3 {
  font-size: 15px;
  margin-bottom: 4px;
}

.deck-meta p {
  color: var(--text-soft);
  font-size: 12px;
}

.cta-section {
  padding-top: 36px;
}

.cta-panel {
  padding: clamp(24px, 4vw, 44px);
  border-radius: 24px;
  border: 1px solid rgba(104, 167, 196, 0.45);
  background: linear-gradient(115deg, rgba(244, 252, 255, 0.95), rgba(212, 237, 248, 0.94));
  box-shadow: var(--shadow);
}

.cta-panel h2 {
  font-size: clamp(26px, 3vw, 42px);
  margin-bottom: 10px;
  color: #0c405a;
}

.cta-panel p {
  color: #24546e;
}

.footer {
  margin-top: 20px;
  padding: 24px 20px 34px;
  border-top: 1px solid rgba(105, 171, 200, 0.28);
  text-align: center;
  color: #34627a;
}

.footer a {
  margin-top: 8px;
  display: inline-block;
  color: #1d5977;
  text-decoration: none;
}

.footer a:hover {
  color: #0e425b;
}

.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0, 8, 14, 0.9);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 80;
}

.lightbox.open {
  display: flex;
}

.lb-figure {
  width: min(95vw, 1300px);
  margin: 0;
}

.lb-figure img {
  width: 100%;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.lb-figure figcaption {
  margin-top: 8px;
  text-align: center;
  color: #d0e6f2;
}

.lb-close,
.lb-nav {
  border: 0;
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  cursor: pointer;
}

.lb-close {
  position: absolute;
  top: 18px;
  right: 18px;
  width: 40px;
  height: 40px;
  font-size: 28px;
}

.lb-nav {
  width: 46px;
  height: 46px;
  font-size: 30px;
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

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

@media (max-width: 1080px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .grid-3,
  .pain-list,
  .badge-row {
    grid-template-columns: 1fr 1fr;
  }

  .service-steps {
    grid-template-columns: 1fr 1fr 1fr;
  }
}

@media (max-width: 760px) {
  .topbar {
    flex-direction: column;
    gap: 8px;
    align-items: flex-start;
  }

  .nav {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .section {
    width: calc(100% - 26px);
  }

  .grid-3,
  .pain-list,
  .product-grid,
  .service-steps,
  .badge-row {
    grid-template-columns: 1fr;
  }

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

  .hero-metrics {
    grid-template-columns: 1fr;
  }

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