:root {
  --navy: #07111f;
  --navy-2: #0d1b33;
  --navy-3: #122444;
  --panel: #10203a;
  --line: rgba(125, 170, 230, 0.18);
  --blue: #1e7bff;
  --blue-2: #4aa3ff;
  --gold: #e0b84d;
  --text: #edf3fb;
  --muted: #9eb3cb;
  --white: #ffffff;
  --ok: #35c48a;
  --danger: #ff5d6c;
  --radius: 16px;
  --shadow: 0 18px 40px rgba(0, 0, 0, 0.28);
  --max: 1180px;
  --header: 72px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  background: radial-gradient(1200px 500px at 80% -10%, rgba(30, 123, 255, 0.22), transparent 55%),
    radial-gradient(900px 420px at 0% 10%, rgba(224, 184, 77, 0.08), transparent 50%),
    var(--navy);
  color: var(--text);
  line-height: 1.85;
  min-height: 100vh;
}

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

a {
  color: var(--blue-2);
  text-decoration: none;
}

a:hover {
  color: var(--gold);
}

.skip {
  position: absolute;
  left: -999px;
  top: 8px;
  background: var(--blue);
  color: #fff;
  padding: 8px 12px;
  z-index: 1000;
}

.skip:focus {
  left: 8px;
}

.container {
  width: min(100% - 32px, var(--max));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  height: var(--header);
  background: rgba(7, 17, 31, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--white);
  font-weight: 800;
  letter-spacing: 0.04em;
}

.logo img {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  object-fit: cover;
}

.logo span {
  font-size: 18px;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  background: var(--navy-2);
  border-radius: 10px;
  padding: 10px 11px;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  height: 2px;
  background: #fff;
  margin: 6px 0;
  transition: 0.2s;
}

.nav-toggle.is-open span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.nav-toggle.is-open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-open span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

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

.nav a {
  color: var(--text);
  font-size: 14px;
  padding: 8px 10px;
  border-radius: 8px;
}

.nav a:hover,
.nav a.is-active {
  background: rgba(30, 123, 255, 0.16);
  color: #fff;
}

.header-cta {
  display: flex;
  gap: 8px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 16px;
  border-radius: 999px;
  border: 0;
  font-weight: 700;
  cursor: pointer;
  color: #fff;
  background: linear-gradient(90deg, #1570ef, #46a0ff);
  box-shadow: 0 8px 20px rgba(21, 112, 239, 0.28);
}

.btn:hover {
  color: #fff;
  filter: brightness(1.06);
}

.btn-ghost {
  background: transparent;
  border: 1px solid var(--line);
  box-shadow: none;
  color: var(--text);
}

.btn-ghost:hover {
  color: #fff;
  border-color: var(--blue-2);
}

.hero {
  padding: 48px 0 28px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 36px;
  align-items: center;
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--gold);
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 700;
}

h1,
h2,
h3,
h4 {
  line-height: 1.35;
  margin: 0 0 14px;
  color: #fff;
}

h1 {
  font-size: clamp(28px, 4vw, 46px);
  letter-spacing: 0.01em;
}

h2 {
  font-size: 28px;
  margin-top: 8px;
}

h3 {
  font-size: 20px;
}

.lead {
  font-size: 18px;
  color: #d5e3f5;
  margin: 0 0 22px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 22px;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 13px;
  color: var(--muted);
}

.hero-visual {
  background: linear-gradient(180deg, rgba(18, 36, 68, 0.8), rgba(13, 27, 51, 0.95));
  border: 1px solid var(--line);
  border-radius: 24px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.hero-visual img {
  width: 100%;
  min-height: 280px;
  object-fit: cover;
}

.quick-entry {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 8px 0 40px;
}

.card,
.section-card {
  background: rgba(16, 32, 58, 0.86);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
}

.quick-entry a {
  color: inherit;
}

.quick-entry h3 {
  margin-bottom: 8px;
}

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

.toc {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-bottom: 36px;
}

.toc a {
  display: block;
  background: var(--navy-2);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 14px;
  color: var(--text);
  font-size: 14px;
}

.toc a:hover {
  border-color: var(--blue-2);
  color: #fff;
}

.prose {
  max-width: 860px;
}

.prose p {
  margin: 0 0 16px;
}

.prose ul,
.prose ol {
  padding-left: 20px;
  margin: 0 0 18px;
}

.prose li {
  margin-bottom: 8px;
}

.section {
  padding: 18px 0 42px;
}

.section-head {
  margin-bottom: 18px;
}

.split {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 24px;
  align-items: start;
}

.media-frame {
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--navy-2);
}

.media-frame img {
  width: 100%;
  object-fit: cover;
}

.grid-3,
.grid-4,
.partners,
.providers,
.promo-grid {
  display: grid;
  gap: 14px;
}

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

.promo-grid {
  grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

.cat-card,
.partner-card,
.provider-card,
.promo-card {
  background: var(--navy-2);
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
}

.cat-card img,
.promo-card img,
.partner-card img {
  width: 100%;
  height: 150px;
  object-fit: cover;
}

.cat-card .body,
.promo-card .body,
.partner-card .body {
  padding: 14px;
}

.provider-card {
  min-height: 92px;
  display: grid;
  place-items: center;
  padding: 12px;
  background: #fff;
}

.provider-card img {
  max-height: 42px;
  width: auto;
  object-fit: contain;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 12px;
  margin: 8px 0 20px;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 640px;
}

th,
td {
  text-align: left;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}

th {
  background: rgba(30, 123, 255, 0.12);
  color: #fff;
}

.faq details {
  background: var(--navy-2);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 16px;
  margin-bottom: 10px;
}

.faq summary {
  cursor: pointer;
  font-weight: 700;
  color: #fff;
}

.crumbs {
  font-size: 13px;
  color: var(--muted);
  margin: 18px 0 8px;
}

.crumbs a {
  color: var(--muted);
}

.page-hero {
  padding: 28px 0 8px;
}

.form-box {
  max-width: 480px;
  margin: 0 auto;
}

.form-box label {
  display: block;
  font-size: 13px;
  margin: 12px 0 6px;
  color: var(--muted);
}

.form-box input {
  width: 100%;
  height: 46px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: #0a1628;
  color: #fff;
  padding: 0 12px 0 40px;
}

.input-wrap {
  position: relative;
}

.input-wrap .ico {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: #7f97b3;
}

.form-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 12px 0 18px;
  font-size: 13px;
  color: var(--muted);
}

.form-note {
  margin-top: 16px;
  font-size: 13px;
  color: var(--muted);
}

.related {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.related a {
  display: block;
  background: var(--navy-2);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px;
  color: var(--text);
}

.update {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 16px;
}

.site-footer {
  margin-top: 40px;
  border-top: 1px solid var(--line);
  background: #050b16;
  padding: 36px 0 20px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 24px;
}

.site-footer h3 {
  font-size: 16px;
}

.site-footer a,
.site-footer p {
  color: var(--muted);
  font-size: 14px;
}

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

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

.copyright {
  border-top: 1px solid var(--line);
  margin-top: 24px;
  padding-top: 16px;
  color: #7d91a8;
  font-size: 13px;
}

.error-page {
  min-height: 62vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 40px 0;
}

.error-page .code {
  font-size: 84px;
  font-weight: 800;
  color: var(--blue-2);
  line-height: 1;
}

.nav-backdrop {
  display: none;
}

@media (max-width: 980px) {
  .hero-grid,
  .split,
  .quick-entry,
  .toc,
  .grid-3,
  .grid-4,
  .promo-grid,
  .related,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .nav-toggle {
    display: block;
    z-index: 92;
  }

  .nav,
  .header-cta {
    display: none;
  }

  .nav.is-open,
  .header-cta.is-open {
    display: flex;
  }

  .nav.is-open {
    position: fixed;
    inset: 0 0 0 auto;
    width: min(86vw, 340px);
    background: #0a162c;
    flex-direction: column;
    align-items: stretch;
    padding: 84px 18px 24px;
    gap: 6px;
    z-index: 90;
    border-left: 1px solid var(--line);
  }

  .header-cta.is-open {
    position: fixed;
    right: 18px;
    bottom: 24px;
    z-index: 91;
    flex-direction: column;
    width: min(calc(86vw - 36px), 304px);
  }

  .nav-backdrop.is-open {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.48);
    z-index: 85;
  }

  body.nav-lock {
    overflow: hidden;
  }

  h1 {
    font-size: 28px;
  }

  .cat-card img,
  .promo-card img {
    height: 190px;
  }
}

.ads-wrap {
  position: sticky;
  top: var(--header);
  z-index: 70;
  padding: 10px 0 6px;
  margin: 0 0 8px;
  background: rgba(7, 17, 31, 0.94);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

#ads {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 10px 8px;
  background: transparent;
  margin: 0;
  min-height: 92px;
}

#ads > div {
  width: 76px;
}

#ads a {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 76px;
  text-decoration: none;
  color: #d7e4f5;
  border-radius: 16px;
  padding: 4px 2px 2px;
}

#ads a:hover {
  color: #fff;
  background: rgba(30, 123, 255, 0.16);
}

#ads img {
  width: 68px;
  height: 68px;
  max-width: none;
  object-fit: cover;
  border-radius: 18px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.28);
  transition: transform 180ms ease, box-shadow 180ms ease;
  display: block;
  border: none;
  background: #fff;
}

#ads a:hover img {
  transform: translateY(-4px) scale(1.04);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.36);
}

#ads .caption {
  height: 18px;
  margin-top: 4px;
  font-size: 11px;
  line-height: 18px;
  color: inherit;
  text-align: center;
  max-width: 76px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}