* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg: #070b14;
  --bg-soft: #0b1220;
  --card: #111a2c;
  --card-2: #0e1626;
  --line: rgba(148, 163, 184, 0.16);
  --text: #e8eefb;
  --muted: #9aa8c0;
  --blue: #3b82f6;
  --green: #22d3a5;
  --grad: linear-gradient(135deg, #3b82f6 0%, #22d3a5 100%);
  --radius: 16px;
  --shadow: 0 18px 44px rgba(2, 6, 18, 0.55);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

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

ul,
ol {
  list-style: none;
}

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

.container {
  width: min(1180px, 92%);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(7, 11, 20, 0.86);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  font-size: 21px;
  font-weight: 800;
  letter-spacing: 0.5px;
  white-space: nowrap;
}

.logo span {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.nav {
  display: flex;
  align-items: center;
  gap: 30px;
}

.nav a {
  font-size: 15px;
  color: var(--muted);
  padding: 6px 2px;
  position: relative;
  white-space: nowrap;
}

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

.nav a.active {
  color: var(--text);
  font-weight: 600;
}

.nav a.active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -4px;
  height: 3px;
  border-radius: 3px;
  background: var(--grad);
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--line);
  color: var(--text);
  font-size: 20px;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  cursor: pointer;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 96px 0 80px;
  background:
    radial-gradient(600px 320px at 12% 0%, rgba(59, 130, 246, 0.22), transparent 65%),
    radial-gradient(560px 300px at 88% 12%, rgba(34, 211, 165, 0.16), transparent 60%),
    var(--bg);
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--green);
  border: 1px solid rgba(34, 211, 165, 0.35);
  background: rgba(34, 211, 165, 0.08);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: clamp(30px, 4.6vw, 50px);
  line-height: 1.28;
  font-weight: 800;
  margin-bottom: 18px;
}

.hero h1 em {
  font-style: normal;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero p.lead {
  color: var(--muted);
  font-size: 17px;
  margin-bottom: 28px;
  max-width: 560px;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 26px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 600;
}

.btn-primary {
  background: var(--grad);
  color: #04121c;
}

.btn-primary:hover {
  opacity: 0.9;
  color: #04121c;
  transform: translateY(-2px);
}

.btn-ghost {
  border: 1px solid var(--line);
  color: var(--text);
}

.btn-ghost:hover {
  border-color: var(--green);
  color: var(--green);
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.chip {
  font-size: 13px;
  color: var(--muted);
  border: 1px solid var(--line);
  background: var(--bg-soft);
  padding: 6px 14px;
  border-radius: 999px;
}

.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.panel-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
  background: var(--card-2);
}

.dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: #334155;
}

.dot.b {
  background: var(--blue);
}

.dot.g {
  background: var(--green);
}

.panel-title {
  margin-left: 8px;
  font-size: 13px;
  color: var(--muted);
}

.panel-body {
  padding: 22px 20px;
}

.panel-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 14px 0;
  border-bottom: 1px dashed var(--line);
}

.panel-row:last-child {
  border-bottom: none;
}

.panel-row .k {
  color: var(--muted);
  font-size: 14px;
}

.panel-row .v {
  font-size: 22px;
  font-weight: 700;
}

.v.up {
  color: var(--green);
}

.v.down {
  color: #f87171;
}

.panel-lock {
  margin-top: 14px;
  padding: 14px 16px;
  border-radius: 12px;
  background: rgba(59, 130, 246, 0.08);
  border: 1px dashed rgba(59, 130, 246, 0.4);
  color: var(--muted);
  font-size: 14px;
}

section.block {
  padding: 76px 0;
}

section.block.alt {
  background: var(--bg-soft);
}

.sec-head {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 46px;
}

.sec-head .kicker {
  color: var(--green);
  font-size: 14px;
  letter-spacing: 2px;
  font-weight: 600;
}

.sec-head h2 {
  font-size: clamp(24px, 3.2vw, 34px);
  margin: 10px 0 12px;
  font-weight: 800;
}

.sec-head p {
  color: var(--muted);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 26px;
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.card:hover {
  transform: translateY(-6px);
  border-color: rgba(34, 211, 165, 0.45);
}

.card .ico {
  font-size: 34px;
  width: 66px;
  height: 66px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  background: rgba(59, 130, 246, 0.12);
  border: 1px solid var(--line);
  margin-bottom: 18px;
}

.card h3 {
  font-size: 19px;
  margin-bottom: 10px;
}

.card p {
  color: var(--muted);
  font-size: 15px;
}

.card .more {
  display: inline-block;
  margin-top: 14px;
  color: var(--green);
  font-size: 14px;
  font-weight: 600;
}

.feature-li {
  display: flex;
  gap: 14px;
  padding: 18px 0;
  border-bottom: 1px dashed var(--line);
}

.feature-li:last-child {
  border-bottom: none;
}

.feature-li .ico {
  font-size: 26px;
  flex-shrink: 0;
}

.feature-li h3 {
  font-size: 17px;
  margin-bottom: 4px;
}

.feature-li p {
  color: var(--muted);
  font-size: 14.5px;
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  counter-reset: step;
}

.step {
  position: relative;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 22px;
}

.step .num {
  display: inline-grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--grad);
  color: #04121c;
  font-weight: 800;
  font-size: 18px;
  margin-bottom: 14px;
}

.step h3 {
  font-size: 17px;
  margin-bottom: 8px;
}

.step p {
  color: var(--muted);
  font-size: 14.5px;
}

.news-list {
  display: grid;
  gap: 20px;
}

.news-item {
  display: flex;
  gap: 22px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.news-item:hover {
  border-color: rgba(59, 130, 246, 0.5);
  transform: translateY(-4px);
}

.news-emoji {
  font-size: 30px;
  width: 72px;
  height: 72px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: rgba(59, 130, 246, 0.12);
  border: 1px solid var(--line);
}

.news-body h3 {
  font-size: 19px;
  margin-bottom: 8px;
  line-height: 1.5;
}

.news-body h3 a:hover {
  color: var(--green);
}

.news-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  color: var(--muted);
  font-size: 13.5px;
  margin-bottom: 10px;
}

.news-meta time {
  color: var(--green);
}

.news-body p {
  color: var(--muted);
  font-size: 15px;
}

.tag {
  display: inline-block;
  font-size: 12.5px;
  padding: 2px 12px;
  border-radius: 999px;
  border: 1px solid rgba(34, 211, 165, 0.4);
  color: var(--green);
  background: rgba(34, 211, 165, 0.07);
}

.tag.blue {
  border-color: rgba(59, 130, 246, 0.5);
  color: #7db2ff;
  background: rgba(59, 130, 246, 0.08);
}

.faq details {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px 22px;
  margin-bottom: 14px;
}

.faq summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 16.5px;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 10px;
}

.faq summary::before {
  content: "❓";
}

.faq details[open] summary {
  color: var(--green);
}

.faq details p {
  color: var(--muted);
  margin-top: 12px;
  font-size: 15px;
}

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

table.compare {
  width: 100%;
  border-collapse: collapse;
  min-width: 640px;
  background: var(--card);
  font-size: 15px;
}

table.compare th,
table.compare td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
  text-align: left;
}

table.compare th {
  background: var(--card-2);
  color: var(--text);
  font-weight: 700;
}

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

table.compare tr:last-child td {
  border-bottom: none;
}

.breadcrumb {
  padding: 22px 0 0;
  font-size: 14px;
  color: var(--muted);
}

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

.breadcrumb a:hover {
  color: var(--green);
}

.breadcrumb .sep {
  margin: 0 8px;
}

.page-hero {
  position: relative;
  padding: 64px 0 56px;
  background:
    radial-gradient(560px 300px at 15% 0%, rgba(59, 130, 246, 0.18), transparent 62%),
    radial-gradient(520px 280px at 85% 10%, rgba(34, 211, 165, 0.12), transparent 58%),
    var(--bg);
  border-bottom: 1px solid var(--line);
}

.page-hero h1 {
  font-size: clamp(26px, 3.6vw, 38px);
  margin: 8px 0 12px;
  font-weight: 800;
}

.page-hero p {
  color: var(--muted);
  max-width: 780px;
}

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

.article h2 {
  font-size: 23px;
  margin: 38px 0 14px;
  padding-left: 14px;
  border-left: 4px solid var(--green);
  line-height: 1.4;
}

.article h3 {
  font-size: 18.5px;
  margin: 26px 0 10px;
}

.article p {
  color: #c3cde0;
  margin-bottom: 14px;
  font-size: 16px;
}

.article ul.check {
  margin: 10px 0 18px;
}

.article ul.check li {
  position: relative;
  padding-left: 30px;
  margin-bottom: 10px;
  color: #c3cde0;
}

.article ul.check li::before {
  content: "✅";
  position: absolute;
  left: 0;
  font-size: 15px;
}

.article ul.warn li::before {
  content: "⚠️";
}

.article .article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  color: var(--muted);
  font-size: 14px;
  padding: 16px 0 8px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 26px;
}

.article .article-meta time {
  color: var(--green);
}

.article blockquote {
  border-left: 4px solid var(--blue);
  background: rgba(59, 130, 246, 0.08);
  padding: 14px 18px;
  border-radius: 0 12px 12px 0;
  color: var(--muted);
  margin: 18px 0;
  font-size: 15px;
}

.related {
  margin-top: 46px;
  padding-top: 26px;
  border-top: 1px dashed var(--line);
}

.related h2 {
  font-size: 20px;
  margin-bottom: 16px;
}

.related ul li {
  margin-bottom: 10px;
}

.related ul li a {
  color: #c3cde0;
}

.related ul li a:hover {
  color: var(--green);
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.contact-card {
  display: flex;
  gap: 18px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
}

.contact-card .ico {
  font-size: 28px;
  width: 58px;
  height: 58px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: rgba(34, 211, 165, 0.1);
  border: 1px solid var(--line);
}

.contact-card h3 {
  font-size: 17px;
  margin-bottom: 6px;
}

.contact-card p {
  color: var(--muted);
  font-size: 14.5px;
}

.timeline {
  position: relative;
  padding-left: 26px;
  border-left: 2px solid var(--line);
  margin-left: 8px;
}

.timeline .t-item {
  position: relative;
  padding: 0 0 30px 22px;
}

.timeline .t-item::before {
  content: "";
  position: absolute;
  left: -34px;
  top: 8px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--grad);
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.18);
}

.timeline .t-item .year {
  color: var(--green);
  font-weight: 700;
  font-size: 17px;
}

.timeline .t-item h3 {
  font-size: 17px;
  margin: 4px 0 6px;
}

.timeline .t-item p {
  color: var(--muted);
  font-size: 14.5px;
}

.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 50px;
}

.stat {
  text-align: center;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 16px;
}

.stat .num {
  font-size: 30px;
  font-weight: 800;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.stat .lbl {
  color: var(--muted);
  font-size: 14px;
  margin-top: 6px;
}

.cta-band {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.16), rgba(34, 211, 165, 0.14)), var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 46px 40px;
  text-align: center;
}

.cta-band h2 {
  font-size: clamp(22px, 3vw, 30px);
  margin-bottom: 12px;
}

.cta-band p {
  color: var(--muted);
  margin-bottom: 24px;
}

.site-footer {
  background: #060a12;
  border-top: 1px solid var(--line);
  padding: 60px 0 0;
  margin-top: 0;
}

.foot-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.2fr 1fr;
  gap: 34px;
  padding-bottom: 40px;
}

.foot-grid h4 {
  font-size: 16px;
  margin-bottom: 16px;
}

.foot-grid p,
.foot-grid li {
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 9px;
}

.foot-grid a:hover {
  color: var(--green);
}

.foot-keywords li a {
  color: var(--muted);
}

.copyright {
  border-top: 1px solid var(--line);
  padding: 20px 0;
  text-align: center;
  color: var(--muted);
  font-size: 13.5px;
}

.to-top {
  display: inline-block;
  margin-top: 14px;
  color: var(--green);
  font-size: 14px;
}

@media (max-width: 960px) {
  .hero-inner {
    grid-template-columns: 1fr;
  }

  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .steps,
  .stats-row {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .nav {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--bg-soft);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 8px 4%;
    display: none;
  }

  .nav.open {
    display: flex;
  }

  .nav a {
    padding: 13px 0;
    width: 100%;
    border-bottom: 1px dashed var(--line);
  }

  .nav a.active::after {
    display: none;
  }

  .nav-toggle {
    display: block;
  }
}

@media (max-width: 640px) {
  .grid-3,
  .grid-2,
  .contact-grid,
  .steps,
  .stats-row {
    grid-template-columns: 1fr;
  }

  .news-item {
    flex-direction: column;
  }

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

  section.block {
    padding: 56px 0;
  }
}