@font-face {
  font-family: "Inter";
  src: url("/assets/fonts/inter-var.woff2") format("woff2");
  font-weight: 400 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Noto Sans SC";
  src: url("/assets/fonts/noto-sans-sc-var.woff2") format("woff2");
  font-weight: 400 600;
  font-style: normal;
  font-display: swap;
}
:root {
  --bg: #f5f5f7;
  --surface: #ffffff;
  --ink: #1d1d1f;
  --ink-soft: #3a3a3c;
  --muted: #6e6e73;
  --line: rgba(0, 0, 0, 0.09);
  --accent: #0b6b70;
  --accent-deep: #084b4f;
  --warm: #c96a24;
  --max: 1120px;
  --radius: 28px;
  --font: -apple-system, BlinkMacSystemFont, "Inter", "Noto Sans SC", system-ui, sans-serif;
  color-scheme: light;
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink);
  background:
    radial-gradient(1100px 620px at 88% -12%, rgba(11, 107, 112, 0.10), transparent 62%),
    radial-gradient(820px 560px at -8% 8%, rgba(201, 106, 36, 0.07), transparent 58%),
    var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

img,
svg {
  display: block;
  max-width: 100%;
}

a {
  color: var(--accent);
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

a:hover {
  color: var(--accent-deep);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  left: 18px;
  top: -80px;
  z-index: 100;
  padding: 12px 18px;
  border-radius: 999px;
  background: var(--ink);
  color: #fff;
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 600;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 14px;
  color: #fff;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(245, 245, 247, 0.78);
  border-bottom: 1px solid var(--line);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
}

.header-inner {
  width: min(var(--max), calc(100% - 48px));
  margin: 0 auto;
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  text-decoration: none;
  font-weight: 600;
  letter-spacing: -0.02em;
  font-size: 1.02rem;
}

.brand:hover {
  color: var(--ink);
}

.brand-mark {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: linear-gradient(145deg, var(--accent), #0e858b);
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  box-shadow: 0 4px 12px rgba(11, 107, 112, 0.24);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 30px;
  font-size: 0.92rem;
}

.site-nav a {
  color: var(--ink-soft);
  text-decoration: none;
  padding: 8px 0;
}

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

/* Hero */
.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(74px, 11vw, 138px) 0 clamp(66px, 9vw, 112px);
}

.hero::after {
  content: "龙";
  position: absolute;
  right: -1.5vw;
  top: 2%;
  z-index: 0;
  font-size: clamp(250px, 38vw, 560px);
  font-weight: 600;
  line-height: 0.9;
  color: transparent;
  -webkit-text-stroke: 1px rgba(11, 107, 112, 0.11);
  pointer-events: none;
  user-select: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  width: min(var(--max), calc(100% - 48px));
  margin: 0 auto;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.eyebrow.light {
  color: rgba(255, 255, 255, 0.72);
}

.hero h1 {
  margin: 0;
  max-width: 15ch;
  font-size: clamp(2.85rem, 7.4vw, 6.05rem);
  font-weight: 600;
  line-height: 1.02;
  letter-spacing: -0.048em;
  text-wrap: balance;
}

.lead {
  margin: 28px 0 0;
  max-width: 42rem;
  color: var(--muted);
  font-size: clamp(1.06rem, 1.6vw, 1.3rem);
  line-height: 1.72;
  text-wrap: pretty;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 23px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-family: inherit;
  font-size: 0.97rem;
  font-weight: 600;
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.2s ease, background-color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.button.primary {
  background: var(--ink);
  color: #fff;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.12);
}

.button.primary:hover {
  background: #000;
  color: #fff;
  transform: translateY(-1px);
}

.button.secondary {
  background: rgba(255, 255, 255, 0.6);
  border-color: rgba(0, 0, 0, 0.14);
  color: var(--ink);
}

.button.secondary:hover {
  background: #fff;
  color: var(--ink);
  transform: translateY(-1px);
}

.hero-note {
  margin: 26px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
  letter-spacing: 0.02em;
}

/* Sections */
.section {
  width: min(var(--max), calc(100% - 48px));
  margin: 0 auto;
  padding: clamp(62px, 8.5vw, 104px) 0;
}

.section-head h2 {
  margin: 0;
  max-width: 22ch;
  font-size: clamp(2rem, 4.4vw, 3.35rem);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.038em;
  text-wrap: balance;
}

.section-head > p:last-child {
  margin: 18px 0 0;
  max-width: 38rem;
  color: var(--muted);
  font-size: 1.04rem;
  line-height: 1.7;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 44px;
}

.card {
  padding: clamp(24px, 3.2vw, 34px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  transition: transform 0.25s ease, box-shadow 0.25s ease, background-color 0.25s ease;
}

.card .num {
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
}

.card h3 {
  margin: 20px 0 10px;
  font-size: 1.36rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.98rem;
  line-height: 1.72;
}

@media (hover: hover) {
  .card:hover {
    transform: translateY(-3px);
    background: rgba(255, 255, 255, 0.92);
    box-shadow: 0 22px 54px rgba(0, 0, 0, 0.07);
  }
}

/* Assurance */
.assurance-panel {
  padding: clamp(28px, 5vw, 64px);
  border: 1px solid var(--line);
  border-radius: 36px;
  background: var(--surface);
}

.facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 40px 0 0;
  border-top: 1px solid var(--line);
}

.fact {
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}

.fact:nth-child(odd) {
  padding-right: 34px;
  border-right: 1px solid var(--line);
}

.fact:nth-child(even) {
  padding-left: 34px;
}

.fact dt {
  margin-bottom: 8px;
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
}

.fact dd {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.99rem;
  line-height: 1.7;
}

.fact dd a {
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.assurance-note {
  margin: 26px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.7;
}

/* Contact */
.contact-panel {
  padding: clamp(32px, 6vw, 72px);
  border-radius: 36px;
  background:
    radial-gradient(700px 400px at 100% 0%, rgba(255, 255, 255, 0.12), transparent 60%),
    linear-gradient(135deg, var(--accent-deep), var(--accent));
  color: #fff;
  box-shadow: 0 30px 70px rgba(8, 75, 79, 0.18);
}

.contact-panel h2 {
  margin: 0;
  max-width: 18ch;
  font-size: clamp(2rem, 4.6vw, 3.4rem);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.04em;
  text-wrap: balance;
}

.contact-lead {
  margin: 18px 0 0;
  max-width: 34rem;
  color: rgba(255, 255, 255, 0.78);
  font-size: 1.02rem;
}

.phone {
  display: inline-block;
  margin: 24px 0 26px;
  color: #fff;
  font-size: clamp(2rem, 5vw, 3.8rem);
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 1.1;
  text-decoration: none;
  font-variant-numeric: tabular-nums;
}

.phone:hover {
  color: #fff;
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 8px;
}

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

.button.light {
  background: #fff;
  color: var(--accent-deep);
}

.button.light:hover {
  background: #f0f7f7;
  color: var(--accent-deep);
  transform: translateY(-1px);
}

.button.outline-light {
  border-color: rgba(255, 255, 255, 0.42);
  color: #fff;
  background: transparent;
}

.button.outline-light:hover {
  border-color: #fff;
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
  transform: translateY(-1px);
}

.contact-meta {
  margin: 30px 0 0;
  color: rgba(255, 255, 255, 0.64);
  font-size: 0.87rem;
}

/* Footer */
.site-footer {
  margin-top: clamp(40px, 6vw, 72px);
  padding: 58px 0 72px;
  border-top: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.5);
}

.footer-inner {
  width: min(var(--max), calc(100% - 48px));
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 7px;
}

.footer-brand {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.footer-operator,
.footer-copy {
  margin: 0;
  color: var(--muted);
  font-size: 0.85rem;
}

.footer-links {
  margin: 10px 0 4px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-size: 0.92rem;
}

.footer-links a {
  color: var(--ink-soft);
  text-decoration: underline;
  text-decoration-color: rgba(0, 0, 0, 0.26);
  text-underline-offset: 4px;
}

.footer-links a:hover {
  color: var(--accent);
  text-decoration-color: currentColor;
}

.footer-links .dot {
  color: rgba(0, 0, 0, 0.3);
}

/* Privacy article */
.article {
  width: min(800px, calc(100% - 48px));
  margin: 0 auto;
  padding: clamp(56px, 8vw, 92px) 0 0;
}

.article h1 {
  margin: 0 0 18px;
  font-size: clamp(2.25rem, 5.2vw, 3.6rem);
  font-weight: 600;
  line-height: 1.06;
  letter-spacing: -0.045em;
  text-wrap: balance;
}

.article .meta {
  margin: 0 0 34px;
  color: var(--muted);
  font-size: 0.88rem;
}

.article p,
.article li {
  color: var(--ink-soft);
  font-size: 1rem;
  line-height: 1.85;
}

.article p {
  margin: 0 0 18px;
}

.article h2 {
  margin: 40px 0 12px;
  font-size: 1.32rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.article ul {
  margin: 0 0 18px;
  padding-left: 1.25em;
}

.article li {
  margin: 0 0 8px;
}

.article strong {
  color: var(--ink);
  font-weight: 600;
}

.article a {
  font-variant-numeric: tabular-nums;
}

.article a[href*="beian.miit.gov.cn"] {
  white-space: nowrap;
}

@media (max-width: 360px) {
  .article a[href*="beian.miit.gov.cn"] {
    font-size: 0.86em;
  }
}

/* Mobile */
@media (max-width: 760px) {
  body {
    font-size: 16px;
  }

  html {
    scroll-padding-top: 82px;
  }

  .header-inner,
  .hero-inner,
  .section,
  .footer-inner,
  .article {
    width: calc(100% - 40px);
  }

  .header-inner {
    min-height: 62px;
  }

  .site-nav {
    gap: 18px;
    font-size: 0.88rem;
  }

  .brand {
    font-size: 0.96rem;
    gap: 8px;
  }

  .brand-mark {
    width: 29px;
    height: 29px;
    border-radius: 9px;
    font-size: 0.92rem;
  }

  .hero {
    padding-top: 58px;
  }

  .hero::after {
    right: -12vw;
    top: 8%;
    font-size: 72vw;
  }

  .hero h1 {
    max-width: none;
    font-size: clamp(2rem, 10vw, 3.2rem);
    letter-spacing: -0.045em;
  }

  .lead {
    margin-top: 22px;
    font-size: 1.02rem;
    line-height: 1.7;
  }

  .actions {
    margin-top: 28px;
  }

  .button {
    min-height: 47px;
    padding: 0 20px;
    font-size: 0.94rem;
  }

  .actions .button {
    flex: 1 1 auto;
  }

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

  .grid {
    gap: 14px;
    margin-top: 32px;
  }

  .facts {
    margin-top: 30px;
  }

  .fact,
  .fact:nth-child(odd),
  .fact:nth-child(even) {
    padding: 22px 0;
    border-right: 0;
  }

  .fact:last-child {
    border-bottom: 0;
  }

  .assurance-panel,
  .contact-panel {
    border-radius: 28px;
  }

  .phone {
    font-size: clamp(1.9rem, 9vw, 2.7rem);
    margin: 20px 0 24px;
  }

  .contact-actions .button {
    flex: 1 1 auto;
  }

  .footer-links {
    gap: 8px;
    font-size: 0.88rem;
  }

  .site-footer {
    padding: 44px 0 58px;
  }

  .article {
    padding-top: 48px;
  }

  .article h1 {
    font-size: clamp(1.9rem, 8.4vw, 2.8rem);
  }

  .article h2 {
    margin-top: 32px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}