:root {
  color-scheme: dark;
  --bg: #080c13;
  --bg-soft: #0d1420;
  --surface: rgba(20, 29, 43, 0.88);
  --surface-strong: #131c2a;
  --surface-warm: rgba(55, 31, 18, 0.7);
  --line: rgba(148, 163, 184, 0.18);
  --line-warm: rgba(249, 115, 22, 0.34);
  --text: #f8fafc;
  --muted: #b8c1cf;
  --muted-2: #8793a5;
  --orange: #ff7417;
  --orange-light: #ffb077;
  --green: #6ee7b7;
  --max: 1180px;
  --radius-lg: 30px;
  --radius-md: 20px;
  --shadow: 0 26px 70px rgba(0, 0, 0, 0.34);
  font-family: "Noto Sans SC", "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 82% 2%, rgba(255, 116, 23, 0.16), transparent 30rem),
    radial-gradient(circle at 8% 28%, rgba(37, 99, 235, 0.12), transparent 36rem),
    linear-gradient(180deg, #080c13 0%, #0a1019 44%, #080c13 100%);
  color: var(--text);
  line-height: 1.7;
  text-rendering: optimizeLegibility;
}

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

a {
  color: inherit;
  text-decoration: none;
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--orange-light);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  transform: translateY(-160%);
  border-radius: 12px;
  background: var(--text);
  color: #07101e;
  font-weight: 700;
}

.skip-link:focus {
  transform: translateY(0);
}

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

.site-header {
  position: sticky;
  z-index: 40;
  top: 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(8, 12, 19, 0.84);
  backdrop-filter: blur(18px);
}

.nav {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: max-content;
}

.brand img {
  width: 46px;
  height: 46px;
  border-radius: 13px;
  box-shadow: 0 9px 30px rgba(255, 116, 23, 0.14);
}

.brand-copy {
  display: grid;
  line-height: 1.2;
}

.brand-copy strong {
  letter-spacing: 0.04em;
  font-size: 1rem;
}

.brand-copy small {
  margin-top: 4px;
  color: var(--muted-2);
  font-size: 0.75rem;
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 6px;
  flex-wrap: wrap;
}

.nav-links a {
  padding: 8px 12px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.92rem;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  background: rgba(255, 255, 255, 0.07);
  color: var(--text);
}

.nav-links .nav-accent {
  border: 1px solid var(--line-warm);
  color: var(--orange-light);
}

.hero {
  position: relative;
  padding: 72px 0 54px;
  overflow: hidden;
}

.hero::before {
  position: absolute;
  inset: 20px 0 auto 0;
  height: 460px;
  content: "";
  pointer-events: none;
  opacity: 0.15;
  background-image:
    linear-gradient(rgba(148, 163, 184, 0.22) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.22) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(to bottom, black, transparent 92%);
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(320px, 0.7fr);
  gap: 34px;
  align-items: stretch;
}

.hero-copy,
.wechat-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(145deg, rgba(17, 25, 38, 0.92), rgba(11, 17, 27, 0.94));
  box-shadow: var(--shadow);
}

.hero-copy {
  padding: clamp(28px, 5vw, 58px);
}

.eyebrow,
.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--line-warm);
  border-radius: 999px;
  background: rgba(255, 116, 23, 0.08);
  color: var(--orange-light);
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.eyebrow {
  padding: 7px 12px;
}

.eyebrow::before {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--orange);
  content: "";
  box-shadow: 0 0 0 5px rgba(255, 116, 23, 0.12);
}

.hero h1 {
  max-width: 700px;
  margin: 24px 0 16px;
  font-size: clamp(2.55rem, 6vw, 5.25rem);
  line-height: 1.04;
  letter-spacing: -0.045em;
}

.hero h1 span {
  color: var(--orange);
}

.hero-lead {
  max-width: 660px;
  margin: 0;
  color: #d7deea;
  font-size: clamp(1.04rem, 2vw, 1.28rem);
}

.hero-points {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.hero-points li {
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.035);
  color: var(--muted);
  font-size: 0.9rem;
}

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

.button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  font-weight: 750;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.button:hover {
  transform: translateY(-2px);
  border-color: rgba(255, 255, 255, 0.28);
  background: rgba(255, 255, 255, 0.09);
}

.button-primary {
  border-color: var(--orange);
  background: var(--orange);
  color: #1b0b01;
}

.button-primary:hover {
  background: #ff8a3d;
}

.wechat-card {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 24px;
  border-color: var(--line-warm);
}

.wechat-card::after {
  position: absolute;
  inset: -1px -1px auto auto;
  width: 72px;
  height: 72px;
  border-top: 1px solid var(--orange);
  border-right: 1px solid var(--orange);
  border-radius: 0 var(--radius-lg) 0 0;
  content: "";
  opacity: 0.66;
}

.wechat-heading {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 18px;
}

.wechat-heading img {
  width: 62px;
  height: 62px;
  border-radius: 18px;
}

.wechat-heading strong,
.wechat-heading span {
  display: block;
}

.wechat-heading strong {
  font-size: 1.1rem;
}

.wechat-heading span {
  color: var(--muted-2);
  font-size: 0.88rem;
}

.qr-frame {
  overflow: hidden;
  border-radius: 20px;
  background: white;
}

.qr-frame img {
  width: 100%;
  height: auto;
  object-fit: contain;
}

.wechat-meta {
  margin: 18px 2px 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.wechat-id {
  color: var(--orange-light);
  font-size: 1.16rem;
  font-weight: 800;
  letter-spacing: 0.03em;
}

.trust-strip {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  overflow: hidden;
  margin-top: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--line);
}

.trust-item {
  min-height: 92px;
  padding: 20px;
  background: rgba(12, 18, 29, 0.94);
}

.trust-item strong,
.trust-item span {
  display: block;
}

.trust-item strong {
  color: var(--green);
  font-size: 1rem;
}

.trust-item span {
  margin-top: 4px;
  color: var(--muted-2);
  font-size: 0.86rem;
}

.section {
  padding: 72px 0;
}

.section-tight {
  padding-top: 34px;
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.75fr) minmax(280px, 1.25fr);
  gap: 34px;
  align-items: end;
  margin-bottom: 34px;
}

.section-kicker {
  margin: 0 0 8px;
  color: var(--orange-light);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.section-heading h2,
.page-hero h1 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.35rem);
  line-height: 1.16;
  letter-spacing: -0.035em;
}

.section-heading > p {
  margin: 0;
  color: var(--muted);
  font-size: 1.03rem;
}

.profile-panel {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line-warm);
  border-radius: var(--radius-lg);
  background: var(--line-warm);
}

.profile-intro,
.profile-beliefs {
  padding: clamp(28px, 5vw, 52px);
  background: var(--surface-strong);
}

.profile-intro {
  background:
    linear-gradient(145deg, rgba(255, 116, 23, 0.12), transparent 55%),
    var(--surface-strong);
}

.profile-intro h3 {
  margin: 14px 0 10px;
  font-size: clamp(1.55rem, 3vw, 2.35rem);
  line-height: 1.28;
}

.profile-intro p {
  margin: 0;
  color: var(--muted);
}

.belief-list {
  display: grid;
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.belief-list li {
  position: relative;
  padding-left: 22px;
  color: #dbe3ee;
  font-size: clamp(1rem, 1.6vw, 1.16rem);
}

.belief-list li::before {
  position: absolute;
  top: 0.72em;
  left: 0;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--orange);
  content: "";
  transform: rotate(45deg);
}

.belief-list li strong {
  color: var(--orange-light);
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.card {
  min-height: 230px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
}

.card-number {
  display: inline-grid;
  width: 40px;
  height: 40px;
  place-items: center;
  border: 1px solid var(--line-warm);
  border-radius: 12px;
  background: var(--surface-warm);
  color: var(--orange-light);
  font-weight: 800;
}

.card h3 {
  margin: 20px 0 8px;
  font-size: 1.25rem;
}

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

.privacy-banner {
  display: grid;
  grid-template-columns: 110px minmax(0, 1fr) auto;
  gap: 26px;
  align-items: center;
  padding: 34px;
  border: 1px solid rgba(110, 231, 183, 0.28);
  border-radius: var(--radius-lg);
  background: linear-gradient(120deg, rgba(16, 185, 129, 0.09), rgba(12, 18, 29, 0.9));
}

.privacy-symbol {
  display: grid;
  width: 90px;
  height: 90px;
  place-items: center;
  border: 1px solid rgba(110, 231, 183, 0.32);
  border-radius: 26px;
  color: var(--green);
  font-size: 2rem;
  font-weight: 900;
}

.privacy-banner h2 {
  margin: 0 0 6px;
  font-size: clamp(1.55rem, 3vw, 2.3rem);
}

.privacy-banner p {
  margin: 0;
  color: var(--muted);
}

.privacy-banner .button {
  min-width: 130px;
}

.company-note {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.035);
}

.company-note strong {
  min-width: max-content;
  color: var(--orange-light);
}

.company-note p {
  margin: 0;
  color: var(--muted);
}

.site-footer {
  margin-top: 48px;
  border-top: 1px solid var(--line);
  background: rgba(5, 8, 13, 0.72);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr 0.8fr;
  gap: 28px;
  padding: 44px 0 28px;
}

.footer-title {
  margin: 0 0 8px;
  font-size: 1rem;
}

.footer-copy,
.footer-links a,
.footer-meta {
  color: var(--muted-2);
  font-size: 0.88rem;
}

.footer-copy {
  max-width: 480px;
  margin: 0;
}

.footer-links {
  display: grid;
  gap: 7px;
}

.footer-links a:hover,
.icp:hover {
  color: var(--orange-light);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
  padding: 18px 0 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.page-hero {
  padding: 70px 0 40px;
}

.page-hero .eyebrow {
  margin-bottom: 20px;
}

.page-hero p {
  max-width: 770px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 1.04rem;
}

.policy-layout {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 34px;
  padding-bottom: 70px;
}

.policy-nav {
  position: sticky;
  top: 102px;
  align-self: start;
  display: grid;
  gap: 5px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(16, 24, 37, 0.84);
}

.policy-nav a {
  padding: 8px 10px;
  border-radius: 10px;
  color: var(--muted);
  font-size: 0.86rem;
}

.policy-nav a:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
}

.policy-content {
  padding: clamp(25px, 5vw, 52px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(16, 24, 37, 0.82);
}

.policy-meta {
  display: flex;
  gap: 9px;
  flex-wrap: wrap;
  margin: 0 0 28px;
  padding: 0 0 22px;
  border-bottom: 1px solid var(--line);
  list-style: none;
}

.policy-meta li {
  padding: 5px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--muted);
  font-size: 0.82rem;
}

.policy-content section {
  scroll-margin-top: 110px;
  padding: 16px 0 18px;
}

.policy-content section + section {
  border-top: 1px solid rgba(255, 255, 255, 0.07);
}

.policy-content h2 {
  margin: 0 0 12px;
  font-size: 1.4rem;
}

.policy-content h3 {
  margin: 18px 0 8px;
  font-size: 1.06rem;
}

.policy-content p,
.policy-content li {
  color: var(--muted);
}

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

.policy-content strong {
  color: #edf2f8;
}

.notice-box {
  margin: 18px 0;
  padding: 18px 20px;
  border-left: 4px solid var(--orange);
  border-radius: 0 14px 14px 0;
  background: rgba(255, 116, 23, 0.08);
  color: #e9d7ca;
}

.data-table {
  width: 100%;
  margin: 18px 0;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.data-table th,
.data-table td {
  padding: 13px 14px;
  border: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.data-table th {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
}

.data-table td {
  color: var(--muted);
}

.support-grid {
  display: grid;
  grid-template-columns: minmax(260px, 0.72fr) minmax(0, 1.28fr);
  gap: 22px;
  padding-bottom: 70px;
}

.support-contact,
.faq-panel {
  padding: clamp(24px, 4vw, 38px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
}

.support-contact {
  align-self: start;
  border-color: var(--line-warm);
}

.support-contact .qr-frame {
  margin-top: 22px;
}

.support-contact h2,
.faq-panel h2 {
  margin: 0 0 10px;
}

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

.support-id {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  margin-top: 18px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.035);
}

.support-id span:first-child {
  color: var(--muted-2);
}

.support-id strong {
  color: var(--orange-light);
}

.faq-item {
  padding: 20px 0;
}

.faq-item + .faq-item {
  border-top: 1px solid var(--line);
}

.faq-item h3 {
  margin: 0 0 7px;
  font-size: 1.08rem;
}

.faq-item p,
.faq-item ul {
  margin-top: 0;
  margin-bottom: 0;
  color: var(--muted);
}

.not-found {
  min-height: 70vh;
  display: grid;
  place-items: center;
  padding: 64px 0;
  text-align: center;
}

.not-found-code {
  margin: 0;
  color: var(--orange);
  font-size: clamp(5rem, 20vw, 11rem);
  font-weight: 900;
  line-height: 0.9;
  letter-spacing: -0.08em;
}

.not-found h1 {
  margin: 24px 0 10px;
}

.not-found p {
  margin: 0 0 24px;
  color: var(--muted);
}

@media (max-width: 930px) {
  .nav {
    padding: 12px 0;
    align-items: flex-start;
  }

  .nav-links {
    max-width: 440px;
  }

  .hero-grid,
  .profile-panel,
  .section-heading,
  .support-grid {
    grid-template-columns: 1fr;
  }

  .wechat-card {
    display: grid;
    grid-template-columns: minmax(0, 0.48fr) minmax(260px, 0.52fr);
    gap: 24px;
    align-items: center;
  }

  .wechat-meta {
    align-self: end;
  }

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

  .privacy-banner {
    grid-template-columns: 90px minmax(0, 1fr);
  }

  .privacy-banner .button {
    grid-column: 2;
    justify-self: start;
  }

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

  .footer-grid > div:first-child {
    grid-column: 1 / -1;
  }

  .policy-layout {
    grid-template-columns: 1fr;
  }

  .policy-nav {
    position: static;
    display: flex;
    overflow-x: auto;
  }

  .policy-nav a {
    min-width: max-content;
  }
}

@media (max-width: 640px) {
  .shell {
    width: min(calc(100% - 24px), var(--max));
  }

  .site-header {
    position: relative;
  }

  .nav {
    display: grid;
    gap: 12px;
  }

  .nav-links {
    justify-content: flex-start;
  }

  .nav-links a {
    padding: 7px 9px;
    font-size: 0.82rem;
  }

  .hero {
    padding-top: 30px;
  }

  .hero-copy,
  .wechat-card,
  .policy-content {
    border-radius: 22px;
  }

  .hero h1 {
    font-size: clamp(2.4rem, 15vw, 4rem);
  }

  .wechat-card {
    display: block;
  }

  .qr-frame {
    max-width: 420px;
    margin-inline: auto;
  }

  .trust-strip,
  .cards {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 52px 0;
  }

  .profile-panel {
    border-radius: 22px;
  }

  .privacy-banner {
    grid-template-columns: 1fr;
    padding: 24px;
    border-radius: 22px;
  }

  .privacy-banner .button {
    grid-column: auto;
  }

  .company-note {
    display: block;
  }

  .company-note strong {
    display: block;
    margin-bottom: 8px;
  }

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

  .footer-grid > div:first-child {
    grid-column: auto;
  }

  .data-table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }
}

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

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}