:root {
  color-scheme: dark;
  --bg: #050810;
  --panel: rgba(11, 16, 32, 0.82);
  --panel-2: rgba(17, 23, 42, 0.72);
  --text: #f0f4ff;
  --muted: #98a2b8;
  --soft: #c9d2e7;
  --line: rgba(255, 255, 255, 0.13);
  --hot: #ff6a61;
  --orange: #ff8b61;
  --pink: #ffc2df;
  --blue: #7dd3fc;
  --green: #84f5c6;
  --shadow: 0 22px 72px rgba(0, 0, 0, 0.28);
  --hairline: rgba(255, 255, 255, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--text);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at 50% 0%, rgba(255, 106, 97, 0.15), transparent 31rem),
    radial-gradient(circle at 84% 18%, rgba(125, 211, 252, 0.06), transparent 24rem),
    var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

.stars {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    radial-gradient(circle, rgba(255, 255, 255, 0.78) 0 1px, transparent 1.5px),
    radial-gradient(circle, rgba(255, 106, 97, 0.26) 0 1px, transparent 1.5px);
  background-position:
    24px 30px,
    220px 80px;
  background-size:
    180px 210px,
    330px 280px;
  opacity: 0.42;
}

.site-nav {
  position: sticky;
  z-index: 10;
  top: 0;
  display: flex;
  gap: 18px;
  align-items: center;
  justify-content: space-between;
  min-height: 70px;
  padding: 14px clamp(16px, 5vw, 54px);
  border-bottom: 1px solid var(--hairline);
  background: rgba(5, 8, 16, 0.72);
  backdrop-filter: blur(22px) saturate(140%);
}

.brand {
  display: inline-flex;
  gap: 10px;
  align-items: center;
  min-width: 190px;
  font-weight: 950;
  letter-spacing: 0;
}

.brand img {
  width: 34px;
  height: 34px;
  object-fit: contain;
  filter: drop-shadow(0 0 18px rgba(255, 106, 97, 0.45));
}

.nav-links {
  display: grid;
  grid-template-columns: repeat(8, 58px) 88px;
  gap: 8px;
  align-items: center;
  justify-content: flex-end;
  color: #c2cbe0;
  font-size: 14px;
  font-weight: 850;
}

.nav-links a {
  display: inline-flex;
  min-height: 38px;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  opacity: 0.82;
  white-space: nowrap;
  transition:
    color 160ms ease,
    opacity 160ms ease,
    background 160ms ease;
}

.nav-links a:hover,
.nav-links .active {
  color: #fff;
  opacity: 1;
  background: rgba(255, 255, 255, 0.055);
}

.nav-cta {
  padding: 0 14px;
  background: linear-gradient(135deg, var(--hot), var(--orange));
  color: white;
  box-shadow: 0 12px 26px rgba(255, 106, 97, 0.18);
}

.nav-links .nav-cta:hover,
.nav-links .nav-cta.active {
  background: linear-gradient(135deg, var(--hot), var(--orange));
}

.page-shell {
  width: min(1160px, calc(100% - 42px));
  margin: 0 auto;
  padding: clamp(38px, 5.6vw, 68px) 0 56px;
}

.article-shell {
  width: min(1080px, calc(100% - 42px));
}

.page-hero {
  display: grid;
  gap: 16px;
  max-width: none;
  margin-bottom: clamp(28px, 4.2vw, 50px);
  padding-bottom: clamp(12px, 2vw, 22px);
}

.article-hero {
  max-width: 940px;
}

.article-hero h1 {
  max-width: 920px;
  font-size: clamp(34px, 5.2vw, 64px);
  line-height: 1.05;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.support-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px;
  align-items: center;
}

.qr-card {
  display: grid;
  gap: 10px;
  justify-items: center;
  padding: 12px;
  border-radius: 18px;
  background: #fff;
  color: #101828;
  font-weight: 900;
  text-align: center;
}

.qr-card img {
  width: min(188px, 34vw);
  aspect-ratio: 1;
  object-fit: contain;
}

.pricing-hero h1 {
  overflow: visible;
  font-size: clamp(28px, 3vw, 40px);
  text-overflow: clip;
}

.eyebrow {
  width: max-content;
  margin: 0;
  padding: 5px 10px;
  border: 1px solid rgba(255, 106, 97, 0.2);
  border-radius: 999px;
  color: var(--hot);
  background: rgba(255, 106, 97, 0.075);
  font-size: 12px;
  font-weight: 950;
  letter-spacing: 0.16em;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 0;
  max-width: 100%;
  font-size: clamp(31px, 3.15vw, 46px);
  line-height: 1.12;
  letter-spacing: 0;
  white-space: normal;
  background: linear-gradient(90deg, var(--pink), var(--hot) 58%, var(--orange));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.lead {
  max-width: 820px;
  margin-bottom: 0;
  color: #b8c1d5;
  font-size: clamp(16px, 1.55vw, 20px);
  line-height: 1.82;
}

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

.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: #eaf0ff;
  background: rgba(11, 16, 32, 0.62);
  font-weight: 950;
  transition:
    transform 160ms ease,
    border-color 160ms ease,
    background 160ms ease,
    box-shadow 160ms ease;
}

.button:hover {
  transform: translateY(-1px);
  border-color: rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.055);
}

.button.primary {
  border: 0;
  background: linear-gradient(135deg, var(--hot), var(--orange));
  color: white;
  box-shadow: 0 14px 34px rgba(255, 106, 97, 0.18);
}

.section {
  margin-top: clamp(24px, 3vw, 34px);
}

.section-head {
  display: flex;
  gap: 14px;
  align-items: end;
  justify-content: space-between;
  margin-bottom: 18px;
  padding-top: 2px;
}

.section h2 {
  margin-bottom: 0;
  font-size: clamp(24px, 2.2vw, 34px);
  line-height: 1.18;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.grid.two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.price-card {
  display: grid;
  gap: 16px;
  align-content: start;
  min-height: 450px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.045), rgba(255, 255, 255, 0.018)),
    var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease,
    box-shadow 180ms ease;
}

.price-card:hover,
.price-card:focus-within {
  border-color: rgba(255, 106, 97, 0.76);
  background:
    radial-gradient(circle at 50% 0%, rgba(255, 106, 97, 0.2), transparent 18rem),
    linear-gradient(145deg, rgba(255, 106, 97, 0.13), rgba(255, 139, 97, 0.04)),
    var(--panel);
  box-shadow: 0 22px 70px rgba(255, 106, 97, 0.16), var(--shadow);
  transform: translateY(-6px);
}

.price-card.recommended {
  position: relative;
}

.price-card.recommended::after {
  position: absolute;
  top: 22px;
  right: 22px;
  padding: 6px 10px;
  border-radius: 999px;
  color: #fff;
  background: rgba(255, 106, 97, 0.22);
  content: "推荐";
  font-size: 12px;
  font-weight: 950;
}

.price-card.selected-plan {
  border-color: rgba(255, 106, 97, 0.62);
  background:
    linear-gradient(145deg, rgba(255, 106, 97, 0.17), rgba(255, 139, 97, 0.05)),
    var(--panel);
  box-shadow: 0 0 0 3px rgba(255, 106, 97, 0.18), var(--shadow);
}

.price-card span {
  display: inline-flex;
  width: max-content;
  padding: 7px 12px;
  border-radius: 999px;
  color: var(--hot);
  background: rgba(255, 106, 97, 0.14);
  font-size: 13px;
  font-weight: 950;
}

.price-card h2 {
  margin: 0;
  font-size: 30px;
}

.price-card strong {
  color: #fff;
  font-size: clamp(42px, 4.3vw, 58px);
  line-height: 1;
}

.price-card p {
  min-height: 72px;
  margin-bottom: 0;
  color: var(--soft);
  line-height: 1.72;
}

.price-card .feature-list {
  min-height: 112px;
}

.price-card .button {
  margin-top: auto;
  transition:
    transform 160ms ease,
    border-color 160ms ease,
    background 160ms ease,
    box-shadow 160ms ease;
}

.price-card:hover .button,
.price-card:focus-within .button {
  border-color: rgba(255, 106, 97, 0.62);
  background: linear-gradient(135deg, var(--hot), var(--orange));
  color: white;
  box-shadow: 0 14px 34px rgba(255, 106, 97, 0.2);
}

.card,
.wide-card {
  border: 1px solid var(--line);
  border-radius: 18px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.052), rgba(255, 255, 255, 0.018)),
    var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
  transition:
    transform 170ms ease,
    border-color 170ms ease,
    background 170ms ease,
    box-shadow 170ms ease;
}

.card {
  display: grid;
  align-content: start;
  min-height: 184px;
  padding: 22px;
}

.wide-card {
  padding: clamp(22px, 4vw, 34px);
}

.card:hover,
.wide-card:hover {
  border-color: rgba(255, 255, 255, 0.2);
  background:
    radial-gradient(circle at 20% 0%, rgba(255, 106, 97, 0.08), transparent 18rem),
    linear-gradient(180deg, rgba(255, 255, 255, 0.064), rgba(255, 255, 255, 0.022)),
    var(--panel);
  box-shadow: 0 24px 78px rgba(0, 0, 0, 0.32);
  transform: translateY(-2px);
}

.card span,
.pill {
  display: inline-flex;
  width: max-content;
  margin-bottom: 14px;
  padding: 6px 11px;
  border-radius: 999px;
  color: var(--hot);
  background: rgba(255, 106, 97, 0.14);
  font-size: 13px;
  font-weight: 950;
}

.card h3,
.wide-card h3 {
  margin-bottom: 10px;
  font-size: clamp(19px, 1.65vw, 23px);
  line-height: 1.28;
}

.card p,
.wide-card p,
li {
  color: var(--muted);
  line-height: 1.74;
}

.card p,
.wide-card p {
  margin-bottom: 0;
}

.card .button {
  width: max-content;
  margin-top: 16px;
}

.screen-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.screen-grid article {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 18px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.052), rgba(255, 255, 255, 0.018)),
    var(--panel);
  box-shadow: var(--shadow);
}

.screen-grid img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-bottom: 1px solid var(--line);
}

.screen-grid span,
.screen-grid h3 {
  margin-inline: 18px;
}

.screen-grid span {
  display: inline-flex;
  margin-top: 18px;
  margin-bottom: 10px;
  color: var(--hot);
  font-size: 13px;
  font-weight: 950;
}

.screen-grid h3 {
  margin-bottom: 20px;
  font-size: clamp(18px, 1.5vw, 21px);
  line-height: 1.3;
}

.feature-list {
  display: grid;
  gap: 11px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.feature-list li::before {
  margin-right: 8px;
  color: var(--hot);
  content: "✓";
  font-weight: 950;
}

.table {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 18px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.016)),
    var(--panel);
  box-shadow: var(--shadow);
}

.row {
  display: grid;
  grid-template-columns: 1.05fr 1fr 1fr;
  gap: 14px;
  padding: 18px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

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

.row.header {
  color: white;
  background: rgba(255, 255, 255, 0.055);
  font-weight: 950;
}

.row div {
  color: #cbd5ef;
  line-height: 1.68;
}

.timeline {
  display: grid;
  gap: 16px;
}

.timeline article {
  display: grid;
  grid-template-columns: 130px minmax(0, 1fr);
  gap: 16px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.016)),
    var(--panel-2);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.2);
}

.timeline time {
  color: var(--hot);
  font-weight: 950;
}

.page-footer {
  display: flex;
  gap: 12px;
  justify-content: space-between;
  margin-top: 54px;
  padding-top: 22px;
  border-top: 1px solid var(--hairline);
  color: var(--muted);
  font-size: 14px;
}

.page-footer a {
  color: #dce5fb;
  font-weight: 850;
}

.faq-list details {
  margin-bottom: 12px;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.052), rgba(255, 255, 255, 0.018)),
    var(--panel);
  box-shadow: var(--shadow);
}

.faq-list summary {
  cursor: pointer;
  color: #f3f6ff;
  font-size: 18px;
  font-weight: 950;
  line-height: 1.45;
}

.faq-list details p {
  margin: 12px 0 0;
}

.faq-index .card {
  color: inherit;
}

@media (max-width: 1120px) {
  .page-shell {
    width: min(100% - 34px, 960px);
  }

  .grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .pricing-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .screen-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .price-card {
    min-height: 420px;
  }
}

@media (max-width: 860px) {
  .site-nav {
    align-items: flex-start;
    flex-direction: column;
    min-height: auto;
  }

  .nav-links {
    display: flex;
    width: 100%;
    gap: 8px;
    justify-content: flex-start;
    overflow-x: auto;
    padding-bottom: 2px;
    -webkit-overflow-scrolling: touch;
  }

  .nav-links::-webkit-scrollbar {
    display: none;
  }

  .nav-links a {
    flex: 0 0 58px;
  }

  .nav-links .nav-cta {
    flex-basis: 82px;
  }

  .grid,
  .grid.two,
  .pricing-grid,
  .screen-grid {
    grid-template-columns: 1fr;
  }

  .card,
  .price-card {
    min-height: 0;
  }

  .row,
  .timeline article,
  .support-card {
    grid-template-columns: 1fr;
  }

  .qr-card img {
    width: min(220px, 70vw);
  }
}

@media (max-width: 560px) {
  .page-shell {
    width: min(100% - 24px, 560px);
    padding-top: 28px;
  }

  .brand {
    min-width: 0;
    font-size: 15px;
  }

  .brand img {
    width: 30px;
    height: 30px;
  }

  .nav-links {
    gap: 10px;
    font-size: 13px;
  }

  h1 {
    font-size: clamp(20px, 6.2vw, 30px);
    line-height: 1.12;
  }

  .lead {
    font-size: 15px;
    line-height: 1.72;
  }

  .section-head {
    align-items: start;
    flex-direction: column;
  }

  .card,
  .wide-card {
    border-radius: 17px;
    padding: 18px;
  }

  .price-card {
    padding: 20px;
    border-radius: 18px;
  }

  .price-card strong {
    font-size: clamp(40px, 13vw, 56px);
  }

  .page-footer {
    flex-direction: column;
  }

  .article-hero h1 {
    font-size: clamp(28px, 9vw, 38px);
    line-height: 1.12;
  }

  .button-row .button {
    width: 100%;
  }
}