:root {
  color-scheme: light;
  --ink: #17202b;
  --muted: #5f6b7a;
  --soft: #f4f7f8;
  --panel: #ffffff;
  --line: #d9e1e5;
  --accent: #0f766e;
  --accent-dark: #0b4f49;
  --amber: #b36b11;
  --danger: #8f2d2d;
  --shadow: 0 22px 60px rgba(23, 32, 43, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: #fbfcfd;
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
}

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

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px clamp(18px, 4vw, 58px);
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
}

.brand-mark {
  display: inline-grid;
  width: 34px;
  height: 34px;
  place-items: center;
  color: #fff;
  border-radius: 8px;
  background: var(--accent);
}

nav {
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--muted);
  font-size: 14px;
}

nav a {
  white-space: nowrap;
}

.nav-cta {
  color: var(--accent-dark);
  font-weight: 800;
}

.hero {
  display: grid;
  min-height: calc(100vh - 64px);
  grid-template-columns: minmax(0, 0.98fr) minmax(420px, 1.02fr);
  gap: clamp(30px, 5vw, 78px);
  align-items: center;
  padding: clamp(50px, 8vw, 96px) clamp(20px, 7vw, 96px);
  background:
    radial-gradient(circle at 8% 22%, rgba(15, 118, 110, 0.15), transparent 30%),
    linear-gradient(180deg, #ffffff 0%, #eef5f4 100%);
}

.hero-copy {
  max-width: 740px;
}

.eyebrow {
  margin: 0 0 13px;
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 20px;
  font-size: clamp(42px, 7vw, 80px);
  line-height: 1.04;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.15;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 20px;
  letter-spacing: 0;
}

.lead {
  max-width: 650px;
  color: var(--muted);
  font-size: 19px;
  line-height: 1.8;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  padding: 0 18px;
  border-radius: 7px;
  font-weight: 800;
}

.primary {
  color: #fff;
  background: var(--accent);
}

.secondary {
  color: var(--accent-dark);
  border: 1px solid rgba(15, 118, 110, 0.35);
  background: rgba(255, 255, 255, 0.76);
}

.quick-proof {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.quick-proof span,
.ticker span,
.tag,
.coop-points span {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 10px;
  border: 1px solid rgba(15, 118, 110, 0.18);
  border-radius: 999px;
  color: var(--accent-dark);
  background: rgba(255, 255, 255, 0.72);
  font-size: 13px;
  font-weight: 700;
}

.hero-visual {
  margin: 0;
}

.hero-visual img {
  display: block;
  width: 100%;
  min-height: 420px;
  object-fit: cover;
  border: 1px solid rgba(15, 118, 110, 0.16);
  border-radius: 18px;
  box-shadow: var(--shadow);
}

.ticker {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  padding: 18px clamp(20px, 7vw, 96px);
  border-block: 1px solid var(--line);
  background: #fff;
}

.ticker span {
  border-color: rgba(143, 45, 45, 0.22);
  color: var(--danger);
}

.section {
  padding: clamp(58px, 7vw, 96px) clamp(20px, 7vw, 96px);
}

.section-heading {
  max-width: 820px;
  margin-bottom: 30px;
}

.section-heading p,
.feature-grid p,
.method-list p,
.timeline p,
.split p,
.faq p,
footer p {
  color: var(--muted);
  line-height: 1.75;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.feature-grid article,
.score-card,
.method-list article,
.timeline article,
.rules-grid article,
.coop-card,
.faq details {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.feature-grid article {
  padding: 22px;
}

.feature-grid ul,
.rules-grid ul {
  margin: 16px 0 0;
  padding-left: 20px;
  color: var(--muted);
  line-height: 1.72;
}

.tag {
  margin-bottom: 16px;
  color: var(--amber);
  border-color: rgba(179, 107, 17, 0.25);
}

.text-link {
  display: inline-flex;
  margin-top: 18px;
  color: var(--accent-dark);
  font-weight: 900;
}

.page-hero {
  padding: clamp(58px, 8vw, 104px) clamp(20px, 7vw, 96px) clamp(34px, 5vw, 58px);
  background:
    radial-gradient(circle at 12% 18%, rgba(15, 118, 110, 0.14), transparent 30%),
    linear-gradient(180deg, #ffffff 0%, #eef5f4 100%);
}

.page-hero h1 {
  max-width: 980px;
}

.danger-hero {
  background:
    radial-gradient(circle at 12% 18%, rgba(143, 45, 45, 0.12), transparent 30%),
    linear-gradient(180deg, #ffffff 0%, #f8f1f1 100%);
}

.page-grid {
  display: grid;
  grid-template-columns: minmax(240px, 0.32fr) minmax(0, 0.68fr);
  gap: 18px;
  align-items: start;
}

.notice-card,
.content-card {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.notice-card {
  position: sticky;
  top: 92px;
  padding: 22px;
  border-left: 5px solid var(--accent);
}

.content-stack {
  display: grid;
  gap: 18px;
}

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

.warning-copy {
  border-left: 5px solid var(--amber);
  background: #fffaf1;
}

.danger-copy {
  border-left: 5px solid var(--danger);
  background: #fff7f7;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  overflow: hidden;
  font-size: 15px;
}

.data-table th,
.data-table td {
  padding: 13px 12px;
  border: 1px solid var(--line);
  vertical-align: top;
}

.data-table th {
  color: var(--accent-dark);
  background: #eef8f6;
  text-align: left;
}

.mini-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.mini-grid div,
.resource-table article {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfd;
}

.check-list {
  margin: 0;
  padding-left: 22px;
  color: var(--muted);
  line-height: 1.8;
}

.resource-table {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 18px;
}

.resource-table span {
  display: inline-flex;
  margin-top: 10px;
  color: var(--amber);
  font-weight: 800;
}

.method-band {
  background: var(--soft);
}

.method-layout {
  display: grid;
  grid-template-columns: minmax(300px, 0.85fr) minmax(0, 1.15fr);
  gap: 18px;
  align-items: start;
}

.score-card {
  padding: 24px;
}

.score-row {
  display: grid;
  grid-template-columns: 54px 1fr;
  gap: 12px;
  align-items: center;
  margin-top: 15px;
  color: var(--muted);
  font-weight: 700;
}

meter {
  width: 100%;
  height: 12px;
}

.method-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.method-list article {
  padding: 22px;
}

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

.timeline article {
  padding: 22px;
  border-top: 5px solid var(--accent);
}

.timeline span {
  display: block;
  margin-bottom: 14px;
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 900;
  text-transform: uppercase;
}

.ideas {
  background: #fff;
}

.idea-list {
  display: grid;
  gap: 10px;
}

.idea-list div {
  display: grid;
  grid-template-columns: 52px 1fr;
  align-items: center;
  min-height: 58px;
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfd;
}

.idea-list strong {
  color: var(--accent);
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(420px, 1.18fr);
  gap: clamp(28px, 6vw, 72px);
  background: var(--soft);
}

.rules-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.rules-grid article {
  padding: 24px;
}

.cooperation {
  background:
    linear-gradient(115deg, rgba(15, 118, 110, 0.1), transparent 42%),
    #fff;
}

.coop-card {
  max-width: 980px;
  padding: clamp(26px, 5vw, 42px);
}

.coop-points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.faq details {
  padding: 20px 22px;
  margin-bottom: 12px;
}

.faq summary {
  cursor: pointer;
  font-weight: 800;
}

.faq p {
  margin: 14px 0 0;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 28px clamp(20px, 7vw, 96px);
  color: var(--muted);
  border-top: 1px solid var(--line);
  background: #fff;
}

footer strong {
  color: var(--ink);
}

@media (max-width: 1080px) {
  .hero,
  .method-layout,
  .split {
    grid-template-columns: 1fr;
  }

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

  .hero-visual img {
    min-height: 360px;
  }
}

@media (max-width: 720px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  nav {
    width: 100%;
    flex-wrap: wrap;
    gap: 12px;
  }

  .feature-grid,
  .method-list,
  .timeline,
  .rules-grid,
  .page-grid,
  .mini-grid,
  .resource-table {
    grid-template-columns: 1fr;
  }

  .notice-card {
    position: static;
  }

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

  .hero {
    padding-top: 42px;
  }

  .hero-visual img {
    min-height: 280px;
  }

  footer {
    flex-direction: column;
  }
}

@media (max-width: 460px) {
  h1 {
    font-size: 40px;
  }

  .lead {
    font-size: 17px;
  }

  .idea-list div {
    grid-template-columns: 1fr;
    gap: 6px;
  }
}