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

:root {
  --bg: #06080f;
  --bg-soft: #0c111c;
  --card: #101827;
  --card-2: #111d30;
  --text: #e6edf8;
  --muted: #95a3bd;
  --line: #1f2c42;
  --primary: #59c3ff;
  --accent: #3de2a7;
  --container: 1140px;
  --radius: 14px;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: radial-gradient(circle at 85% -20%, #183261 0%, transparent 38%), var(--bg);
  color: var(--text);
  line-height: 1.7;
}

a {
  color: var(--primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

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

.container {
  width: min(100% - 36px, var(--container));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(7, 10, 17, 0.82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #f5f8ff;
  font-weight: 700;
  font-size: 1.2rem;
}

.brand img {
  border-radius: 10px;
}

.nav-main {
  list-style: none;
  display: flex;
  gap: 4px;
  margin: 0;
  padding: 0;
}

.nav-main a {
  display: block;
  padding: 8px 12px;
  border-radius: 8px;
  color: var(--muted);
}

.nav-main a.active,
.nav-main a:hover {
  background: #13213a;
  color: #eaf3ff;
  text-decoration: none;
}

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px 10px;
  background: #0f1828;
  color: var(--text);
}

.breadcrumb-wrap {
  background: #0a0f19;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  padding: 10px 0;
  font-size: 14px;
}

.breadcrumb-wrap ol {
  list-style: none;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin: 0;
  padding: 0;
}

.breadcrumb-wrap li + li::before {
  content: "/";
  margin-right: 8px;
  color: #4e6286;
}

.hero {
  position: relative;
  padding: 72px 0 64px;
  background:
    linear-gradient(120deg, rgba(5, 10, 18, 0.96), rgba(5, 10, 18, 0.78)),
    url("../images/9.webp") center/cover no-repeat;
  border-bottom: 1px solid var(--line);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 28px;
  align-items: center;
}

.hero h1 {
  margin: 0 0 12px;
  font-size: clamp(1.6rem, 3.6vw, 2.5rem);
  line-height: 1.3;
}

.hero-lead {
  margin: 0 0 22px;
  color: #d6e0f2;
}

.hero-visual img {
  border-radius: 12px;
  border: 1px solid #324664;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.45);
}

.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 26px;
  border-radius: 10px;
  font-weight: 700;
  background: linear-gradient(135deg, #38d4ff, #26a9f7 52%, #1d83e8);
  color: #05111f !important;
  text-decoration: none !important;
}

.btn-download:hover {
  filter: brightness(1.08);
}

.hero-meta {
  margin-top: 14px;
  color: #b7c6de;
  font-size: 14px;
}

.section {
  padding: 56px 0;
}

.section-alt {
  background: #0a1220;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-title {
  text-align: center;
  margin-bottom: 28px;
}

.section-title h2 {
  margin: 0 0 8px;
}

.section-title p {
  margin: 0;
  color: var(--muted);
}

.cards,
.gallery-grid,
.reviews-grid {
  display: grid;
  gap: 16px;
}

.cards {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.gallery-grid {
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
}

.reviews-grid {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.card,
.review-card,
.page-content {
  background: linear-gradient(160deg, #111a2b, #0e1625);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
}

.card h3,
.review-card h3 {
  margin-top: 0;
}

.card p,
.review-card p {
  color: #b9c6dc;
}

.gallery-grid img {
  border-radius: 12px;
  border: 1px solid #22304a;
  aspect-ratio: 16/10;
  object-fit: cover;
}

.faq-list {
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  background: #0d1728;
  border: 1px solid var(--line);
  border-radius: 12px;
  margin-bottom: 12px;
}

.faq-item summary {
  cursor: pointer;
  padding: 14px 16px;
  font-weight: 600;
}

.faq-body {
  padding: 0 16px 16px;
  color: #b6c3d8;
}

main.container {
  padding: 20px 0 30px;
}

.page-content {
  margin: 12px 0 26px;
}

.page-content h1 {
  margin-top: 0;
}

.page-content h2 {
  color: #f0f6ff;
}

.page-content ul,
.page-content ol {
  padding-left: 1.25rem;
}

.site-footer {
  background: #060a13;
  border-top: 1px solid var(--line);
  color: #b8c3d6;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 26px;
  padding: 32px 0 20px;
}

.site-footer h4 {
  margin: 0 0 10px;
  color: #f4f8ff;
}

.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-links li {
  margin-bottom: 8px;
}

.footer-links a {
  color: #8ec8ff;
}

.footer-dates time {
  display: block;
  font-size: 13px;
}

.footer-bottom {
  border-top: 1px solid #19263a;
  text-align: center;
  padding: 14px 0;
}

.footer-bottom a {
  color: #5be4b1;
}

@media (max-width: 920px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .nav-toggle {
    display: block;
  }

  .nav-main {
    display: none;
    position: absolute;
    right: 16px;
    top: 64px;
    width: 220px;
    flex-direction: column;
    padding: 8px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: #0d1625;
  }

  .nav-main.open {
    display: flex;
  }
}