:root {
  --bg: #091015;
  --bg-soft: #121c25;
  --card: #0f1b23;
  --text: #e7f4ff;
  --muted: #9ab2c5;
  --line: #274154;
  --brand: #3ef2cb;
  --accent: #ff9166;
  --max: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 20% 20%, rgba(62, 242, 203, 0.2), transparent 35%),
    radial-gradient(circle at 85% 12%, rgba(255, 145, 102, 0.18), transparent 30%),
    linear-gradient(180deg, #070d12 0%, #0a131a 60%, #081017 100%);
  font-family: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", "Noto Sans CJK SC", "Segoe UI", sans-serif;
  line-height: 1.6;
}

h1,
h2,
h3,
.logo-text {
  font-family: "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
  letter-spacing: 0.02em;
}

.bg-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 36px 36px;
  pointer-events: none;
  z-index: -1;
}

.container {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(8px);
  background: rgba(6, 12, 17, 0.82);
  border-bottom: 1px solid rgba(70, 110, 136, 0.35);
}

.nav-wrap {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: inherit;
  text-decoration: none;
  font-weight: 700;
}

.logo-mark {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  color: #00130d;
  background: linear-gradient(145deg, var(--brand), #97ffde);
  font-size: 0.85rem;
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.2rem;
}

.nav a {
  text-decoration: none;
  color: var(--muted);
  font-weight: 500;
  transition: color 0.2s ease;
}

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

.nav-static {
  position: static;
}

.btn-mini,
.btn-primary,
.btn-ghost {
  border-radius: 999px;
  padding: 0.72rem 1.25rem;
  font-weight: 700;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-mini,
.btn-primary {
  color: #012017;
  background: linear-gradient(135deg, var(--brand), #7fffdf);
}

.btn-ghost {
  color: var(--text);
  border: 1px solid var(--line);
  background: rgba(22, 35, 46, 0.55);
}

.menu-toggle {
  display: none;
  background: transparent;
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.45rem 0.75rem;
}

main section {
  padding: 4.5rem 0;
}

.hero {
  padding-top: 6rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2rem;
  align-items: center;
}

.kicker {
  margin: 0 0 0.5rem;
  color: var(--brand);
  font-size: 0.86rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 4.8vw, 3.6rem);
  line-height: 1.12;
}

h2 {
  margin: 0;
  font-size: clamp(1.5rem, 3.2vw, 2.2rem);
}

.hero-sub {
  margin: 1rem 0 0;
  color: var(--muted);
  max-width: 56ch;
}

.hero-actions {
  margin-top: 1.6rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.hero-card,
.panel,
.cap-grid article,
.solution-item,
.process-steps li {
  border: 1px solid rgba(90, 131, 158, 0.32);
  background: linear-gradient(160deg, rgba(18, 29, 38, 0.92), rgba(10, 18, 24, 0.94));
  border-radius: 18px;
}

.hero-card {
  padding: 1rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8rem;
}

.hero-photo {
  grid-column: 1 / -1;
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: 12px;
  border: 1px solid rgba(105, 157, 189, 0.35);
}

.metric {
  padding: 1rem;
  border: 1px solid rgba(105, 157, 189, 0.35);
  border-radius: 12px;
  background: rgba(18, 30, 38, 0.66);
}

.metric span {
  font-size: 0.9rem;
  color: var(--muted);
}

.metric strong {
  display: block;
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
  margin-top: 0.4rem;
  font-size: clamp(1.45rem, 3vw, 2rem);
}

.panel {
  padding: 2rem;
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 1rem;
  align-items: center;
}

.panel p {
  color: var(--muted);
}

.cap-grid {
  margin-top: 1.25rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.cap-grid article,
.solution-item {
  padding: 1.35rem;
}

.solution-photo {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 12px;
  border: 1px solid rgba(105, 157, 189, 0.35);
  margin-bottom: 0.8rem;
}

.solution-photo-contain {
  object-fit: contain;
  background: rgba(11, 20, 28, 0.88);
  padding: 0.35rem;
}

.solution-photo-gateway {
  background: linear-gradient(160deg, rgba(16, 30, 40, 0.92), rgba(8, 16, 24, 0.95));
  border-color: rgba(105, 157, 189, 0.45);
  box-shadow: inset 0 0 0 1px rgba(62, 242, 203, 0.08);
  padding: 0.3rem;
}

.cap-grid h3,
.solution-item h3 {
  margin-top: 0;
}

.cap-grid p,
.solution-item p {
  margin-bottom: 0;
  color: var(--muted);
}

.solution-list {
  margin-top: 1.25rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.case-panel {
  grid-template-columns: 1.2fr 0.8fr;
}

.case-panel ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.8rem;
}

.case-panel li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 1rem;
  border-radius: 12px;
  background: rgba(16, 29, 37, 0.75);
  border: 1px solid rgba(98, 150, 179, 0.3);
}

.case-panel strong {
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
  font-size: 1.35rem;
  color: var(--accent);
}

.case-panel span {
  color: var(--muted);
}

.case-more {
  margin-top: 1rem;
}

.product-points {
  margin: 0.7rem 0 0;
  padding-left: 1.1rem;
  color: #b7d0e3;
}

.product-points li {
  margin: 0.35rem 0;
}

.case-thumb-grid {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.8rem;
}

.case-thumb-grid img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 12px;
  border: 1px solid rgba(95, 153, 185, 0.4);
}

.case-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.case-item {
  padding: 1.2rem;
  border: 1px solid rgba(96, 145, 175, 0.35);
  border-radius: 16px;
  background: linear-gradient(165deg, rgba(18, 30, 40, 0.9), rgba(12, 20, 28, 0.95));
}

.case-item h2 {
  margin-top: 0.3rem;
  font-size: 1.2rem;
}

.case-item p {
  margin-bottom: 0;
  color: var(--muted);
}

.case-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 0.45rem 0 0.65rem;
}

.case-tags span {
  padding: 0.25rem 0.55rem;
  border-radius: 999px;
  border: 1px solid rgba(111, 181, 216, 0.44);
  background: rgba(18, 40, 52, 0.62);
  color: #c9e9fb;
  font-size: 0.8rem;
  line-height: 1.2;
}

.case-photo {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 10px;
  border: 1px solid rgba(95, 153, 185, 0.36);
  margin: 0.55rem 0 0.75rem;
}

.case-photo-contain {
  object-fit: contain;
  background: rgba(10, 19, 26, 0.9);
  padding: 0.25rem;
}

.case-gallery {
  margin: 0.55rem 0 0.75rem;
}

.case-caption {
  margin: 0.2rem 0 0.55rem;
  color: #9fd0ee;
  font-size: 0.85rem;
}

.case-thumbs {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.45rem;
}

.case-thumb {
  padding: 0;
  border: 1px solid rgba(77, 131, 163, 0.55);
  border-radius: 8px;
  background: rgba(9, 16, 23, 0.85);
  cursor: pointer;
  overflow: hidden;
}

.case-thumb img {
  width: 100%;
  height: 56px;
  object-fit: cover;
  display: block;
}

.case-thumb.active {
  border-color: var(--brand);
  box-shadow: 0 0 0 1px rgba(62, 242, 203, 0.35);
}

.case-no {
  margin: 0;
  color: var(--brand);
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
  font-weight: 700;
}

.process-steps {
  margin: 1.2rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.8rem;
}

.process-steps li {
  padding: 1rem 1.2rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.process-steps span {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  color: #032015;
  background: linear-gradient(145deg, #b4ffe8, var(--brand));
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
  font-weight: 700;
}

.tag-list {
  margin-top: 1.2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.tag-list span {
  padding: 0.55rem 0.9rem;
  border-radius: 999px;
  border: 1px solid rgba(95, 153, 185, 0.42);
  background: rgba(15, 27, 34, 0.78);
  color: #cfe8f8;
  font-size: 0.93rem;
}

.footer {
  padding: 3rem 0 1.4rem;
}

.footer-grid {
  padding: 1.6rem;
  border: 1px solid rgba(90, 136, 164, 0.35);
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(21, 33, 42, 0.93), rgba(9, 15, 21, 0.96));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.footer-grid p {
  margin-bottom: 0;
  color: var(--muted);
}

.copyright {
  text-align: center;
  color: #88a3b8;
  font-size: 0.9rem;
  margin: 1rem 0 0;
}

.section-reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

@media (max-width: 980px) {
  .hero-grid,
  .panel,
  .case-panel,
  .solution-list,
  .case-list,
  .case-thumb-grid {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 780px) {
  .menu-toggle {
    display: inline-flex;
  }

  .nav {
    position: absolute;
    top: 72px;
    right: 1rem;
    left: 1rem;
    padding: 0.9rem;
    border-radius: 14px;
    border: 1px solid var(--line);
    background: rgba(7, 14, 20, 0.98);
    display: none;
    flex-direction: column;
    align-items: flex-start;
  }

  .nav.open {
    display: flex;
  }

  .hero {
    padding-top: 5rem;
  }

  main section {
    padding: 3.5rem 0;
  }

  .case-thumbs {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}