:root {
  --bg: #f5f8fb;
  --paper: #ffffff;
  --ink: #132033;
  --muted: #5f6f85;
  --line: #d9e3ee;
  --soft: #eef4f8;
  --green: #0f8b67;
  --green-2: #20c997;
  --blue: #2563eb;
  --cyan: #0ea5e9;
  --amber: #f59e0b;
  --red: #e05252;
  --shadow: 0 18px 54px rgba(25, 44, 72, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(180deg, #edf6fb 0, #f7fbf8 360px, var(--bg) 100%);
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", Arial, sans-serif;
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  min-height: 72px;
  padding: 0 42px;
  border-bottom: 1px solid rgba(217, 227, 238, 0.86);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(18px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 280px;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 10px;
  color: #ffffff;
  background: linear-gradient(135deg, var(--green), var(--blue));
  font-weight: 900;
  box-shadow: 0 12px 28px rgba(15, 139, 103, 0.22);
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 15px;
  line-height: 1.25;
}

.brand small {
  margin-top: 3px;
  color: var(--muted);
  font-size: 12px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 18px;
  color: #40536b;
  font-size: 14px;
  font-weight: 800;
  white-space: nowrap;
}

.nav a,
.header-action,
.button {
  text-decoration: none;
}

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

.header-action,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  color: var(--ink);
  font-size: 14px;
  font-weight: 900;
  cursor: pointer;
}

.header-action,
.button.primary {
  border-color: transparent;
  color: #ffffff;
  background: linear-gradient(135deg, var(--green), var(--blue));
  box-shadow: 0 14px 30px rgba(37, 99, 235, 0.18);
}

.button.secondary {
  background: #f8fbfd;
}

main {
  max-width: 1220px;
  margin: 0 auto;
  padding: 34px 28px 72px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(420px, 1fr);
  gap: 28px;
  align-items: center;
  min-height: calc(100vh - 110px);
}

.hero-copy {
  padding: clamp(24px, 5vw, 54px);
}

.hero h1 {
  max-width: 720px;
  margin: 0 0 22px;
  font-size: clamp(34px, 4.4vw, 56px);
  line-height: 1.08;
  letter-spacing: 0;
}

.hero p {
  max-width: 700px;
  margin: 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.85;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.hero-visual {
  margin: 0;
}

.hero-visual img {
  display: block;
  width: 100%;
  border: 1px solid rgba(37, 99, 235, 0.1);
  border-radius: 18px;
  box-shadow: var(--shadow);
}

.section {
  margin-top: 26px;
  padding: 28px;
  border: 1px solid rgba(217, 227, 238, 0.9);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 12px 38px rgba(25, 44, 72, 0.06);
}

.section-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 26px;
  margin-bottom: 22px;
}

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

h2 {
  margin-bottom: 8px;
  font-size: 30px;
  line-height: 1.24;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 19px;
  line-height: 1.35;
}

.section-head p {
  max-width: 670px;
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.75;
}

.intro-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  border-color: transparent;
  background: linear-gradient(135deg, #0f8b67, #2563eb);
  color: #ffffff;
}

.intro-strip article {
  padding: 20px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.1);
}

.intro-strip strong,
.intro-strip span {
  display: block;
}

.intro-strip strong {
  margin-bottom: 10px;
  font-size: 19px;
}

.intro-strip span {
  color: rgba(255, 255, 255, 0.82);
  line-height: 1.7;
}

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

.basics-grid article,
.scene-grid article,
.trend-map article,
.solution-card,
.token-rows article {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #ffffff;
}

.basics-grid span {
  display: inline-flex;
  margin-bottom: 14px;
  color: var(--green);
  font-size: 13px;
  font-weight: 900;
}

.basics-grid p,
.scene-grid p,
.trend-map p,
.solution-card p,
.token-rows p,
.policy-main p,
.source-box p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.75;
}

.policy-section {
  background:
    linear-gradient(135deg, rgba(15, 139, 103, 0.06), rgba(37, 99, 235, 0.07)),
    #ffffff;
}

.policy-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 330px;
  gap: 18px;
}

.policy-main {
  display: grid;
  gap: 14px;
}

.policy-main article {
  padding: 22px;
  border-left: 4px solid var(--green);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.8);
}

.source-box {
  padding: 22px;
  border: 1px solid rgba(37, 99, 235, 0.18);
  border-radius: 10px;
  background: #f7fbff;
}

.source-box a {
  display: block;
  margin: 12px 0;
  color: var(--blue);
  font-weight: 900;
}

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

.trend-map strong {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  margin-bottom: 16px;
  border-radius: 999px;
  color: #ffffff;
  background: var(--blue);
}

.solution-section {
  background: #132033;
  color: #ffffff;
}

.solution-section .section-head p,
.solution-card p,
.solution-card li {
  color: rgba(255, 255, 255, 0.74);
}

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

.solution-card {
  border-color: rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.08);
}

.solution-card h3 {
  font-size: 24px;
}

.solution-card ul {
  margin: 18px 0 0;
  padding-left: 18px;
}

.solution-card li + li {
  margin-top: 9px;
}

.solution-card.lanqi {
  border-top: 4px solid var(--green-2);
}

.solution-card.gateway {
  border-top: 4px solid var(--cyan);
}

.solution-card.gongdadi {
  border-top: 4px solid var(--amber);
}

.process-line {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
  margin-top: 18px;
}

.process-line span {
  display: grid;
  min-height: 46px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  color: rgba(255, 255, 255, 0.88);
  background: rgba(255, 255, 255, 0.08);
  font-size: 14px;
  font-weight: 900;
  text-align: center;
}

.token-section {
  background: #fbf7ec;
}

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

.token-rows span {
  display: block;
  margin-bottom: 10px;
  color: #a35a00;
  font-weight: 900;
}

.price-section {
  background: #ffffff;
}

.price-toolbar {
  display: grid;
  grid-template-columns: minmax(260px, 1fr) 180px auto;
  gap: 14px;
  align-items: end;
  margin-bottom: 14px;
}

label span {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 900;
}

input,
select {
  width: 100%;
  min-height: 42px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  background: #ffffff;
  font: inherit;
  outline: none;
}

input:focus,
select:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.price-summary {
  margin-bottom: 14px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 900;
}

.price-note {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  margin-bottom: 18px;
  padding: 16px 18px;
  border: 1px solid rgba(15, 139, 103, 0.16);
  border-radius: 10px;
  background: rgba(15, 139, 103, 0.06);
}

.price-note strong {
  flex: 0 0 auto;
  color: var(--green);
}

.price-note span {
  color: var(--muted);
  line-height: 1.6;
}

.price-block {
  margin-top: 20px;
}

.price-block[hidden] {
  display: none;
}

.price-block-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 12px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.price-block-head h3 {
  margin-bottom: 6px;
  font-size: 22px;
}

.price-block-head p {
  max-width: 780px;
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.65;
}

.price-block-head span {
  display: inline-flex;
  flex: 0 0 auto;
  min-height: 30px;
  align-items: center;
  padding: 0 10px;
  border-radius: 999px;
  color: var(--blue);
  background: rgba(37, 99, 235, 0.08);
  font-size: 13px;
  font-weight: 900;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #ffffff;
}

table {
  width: 100%;
  min-width: 980px;
  border-collapse: collapse;
}

th,
td {
  padding: 15px 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  color: #52647a;
  background: #f4f8fb;
  font-size: 12px;
}

td {
  color: #233449;
}

td strong,
td small {
  display: block;
}

td small {
  margin-top: 6px;
  color: var(--muted);
  line-height: 1.45;
}

td a {
  color: var(--blue);
  font-weight: 900;
}

.tag {
  display: inline-flex;
  min-height: 26px;
  align-items: center;
  padding: 0 10px;
  border-radius: 999px;
  color: var(--green);
  background: rgba(15, 139, 103, 0.1);
  font-size: 12px;
  font-weight: 900;
}

.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  max-width: 1220px;
  margin: 0 auto 30px;
  padding: 0 28px;
  color: var(--muted);
  font-size: 13px;
}

.footer p {
  margin: 0;
}

.footer a {
  color: var(--blue);
  font-weight: 900;
}

@media print {
  .site-header,
  .footer,
  .hero-actions,
  .price-toolbar {
    display: none;
  }

  body {
    background: #ffffff;
  }

  main {
    max-width: none;
    padding: 0;
  }

  .section,
  .hero {
    break-inside: avoid;
    box-shadow: none;
  }
}

@media (max-width: 1040px) {
  .site-header {
    flex-wrap: wrap;
    padding: 16px 24px;
  }

  .nav {
    order: 3;
    width: 100%;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .hero,
  .policy-layout,
  .solution-grid,
  .intro-strip,
  .basics-grid,
  .scene-grid,
  .trend-map,
  .token-rows {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: 0;
  }

  .price-toolbar {
    grid-template-columns: 1fr 180px;
  }

  .price-toolbar .button {
    grid-column: 1 / -1;
  }
}

@media (max-width: 680px) {
  main {
    padding: 22px 14px 48px;
  }

  .site-header {
    padding: 14px;
    gap: 12px;
  }

  .brand {
    flex: 1 0 100%;
    min-width: 100%;
  }

  .brand-mark {
    flex: 0 0 42px;
  }

  .brand span:last-child {
    min-width: 0;
  }

  .brand strong {
    font-size: 14px;
    line-height: 1.35;
    word-break: keep-all;
    overflow-wrap: normal;
  }

  .brand small {
    font-size: 11px;
    line-height: 1.45;
  }

  .nav {
    gap: 14px;
    font-size: 13px;
  }

  .header-action {
    display: none;
  }

  .hero-copy,
  .section {
    padding: 20px;
  }

  .hero h1 {
    font-size: 36px;
    line-height: 1.14;
  }

  h2 {
    font-size: 24px;
  }

  .section-head,
  .price-block-head,
  .footer {
    flex-direction: column;
    align-items: flex-start;
  }

  .price-note {
    flex-direction: column;
  }

  .price-toolbar,
  .process-line {
    grid-template-columns: 1fr;
  }
}