:root {
  --bg: #eef4fb;
  --panel: rgba(255, 255, 255, 0.88);
  --panel-soft: #f6f9fe;
  --panel-solid: #ffffff;
  --ink: #11223d;
  --muted: #5b718d;
  --line: rgba(17, 34, 61, 0.09);
  --primary: #1563d6;
  --primary-deep: #0d4dac;
  --accent: #10b981;
  --shadow: 0 24px 60px rgba(12, 37, 76, 0.12);
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --content-width: 1220px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 7% 10%, rgba(21, 99, 214, 0.16), transparent 22%),
    radial-gradient(circle at 92% 14%, rgba(16, 185, 129, 0.1), transparent 18%),
    linear-gradient(180deg, #f8fbff 0%, var(--bg) 100%);
}

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

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

.page-shell {
  width: min(calc(100% - 40px), var(--content-width));
  margin: 0 auto;
  padding: 24px 0 54px;
}

.panel {
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.78);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.site-header {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 22px;
  padding: 16px 22px;
  border-radius: 24px;
  position: sticky;
  top: 14px;
  z-index: 12;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.82);
  box-shadow: var(--shadow);
}

.brand-block {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--primary) 0%, #4a93ff 100%);
  color: #fff;
  font-size: 24px;
  font-weight: 700;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.28);
}

.brand-mark-small {
  width: 42px;
  height: 42px;
  font-size: 18px;
  border-radius: 14px;
}

.brand-kicker,
.section-tag,
.plan-label,
.card-kicker {
  margin: 0;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--primary);
}

.brand-block h1,
.hero-copy h2,
.section-head h3,
.page-hero h2,
.feature-card h4,
.plan-card h4,
.matrix-card h4,
.info-card h3,
.faq-item h4 {
  margin: 0;
}

.brand-block h1 {
  font-size: 28px;
}

.site-nav {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px 18px;
}

.site-nav a {
  color: var(--muted);
  font-size: 14px;
  font-weight: 600;
}

.site-nav a.is-current,
.site-nav a:hover {
  color: var(--primary-deep);
}

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

.site-contact a {
  color: var(--primary-deep);
  font-weight: 700;
}

.hero,
.payment-layout,
.two-column {
  display: grid;
  gap: 22px;
}

.hero-home {
  margin-top: 22px;
  padding: 42px;
  grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.85fr);
}

.hero-copy h2,
.page-hero h2 {
  margin-top: 14px;
  font-size: clamp(36px, 5vw, 62px);
  line-height: 1.03;
}

.hero-intro,
.page-hero p,
.section-head p,
.feature-card p,
.info-card p,
.faq-item p,
.matrix-card li,
.plan-card li,
.payment-copy p,
.footer p {
  color: var(--muted);
  line-height: 1.75;
}

.hero-intro {
  font-size: 17px;
  max-width: 66ch;
  margin: 20px 0 0;
}

.hero-actions {
  display: flex;
  gap: 14px;
  margin-top: 26px;
}

.btn,
.text-link {
  transition: transform 180ms ease, box-shadow 180ms ease, color 180ms ease;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 24px;
  border-radius: 999px;
  font-weight: 700;
}

.btn:hover,
.text-link:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-deep) 0%, var(--primary) 100%);
  color: #fff;
  box-shadow: 0 14px 30px rgba(21, 99, 214, 0.26);
}

.btn-secondary {
  background: var(--panel-soft);
  color: var(--primary-deep);
  border: 1px solid rgba(21, 99, 214, 0.14);
}

.hero-metrics {
  list-style: none;
  padding: 0;
  margin: 32px 0 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.hero-metrics li,
.info-card,
.feature-card,
.plan-card,
.paid-card,
.matrix-card,
.payment-card,
.company-facts,
.faq-item,
.auth-card {
  border: 1px solid var(--line);
}

.hero-metrics li {
  background: var(--panel-soft);
  padding: 18px 20px;
  border-radius: 20px;
}

.hero-metrics strong {
  display: block;
  font-size: 24px;
  color: var(--primary-deep);
}

.hero-metrics span {
  display: block;
  margin-top: 6px;
  color: var(--muted);
}

.hero-stack {
  display: grid;
  gap: 14px;
}

.info-card {
  padding: 22px;
  border-radius: 24px;
  background: linear-gradient(180deg, #ffffff 0%, #f7faff 100%);
}

.info-card-primary {
  background: linear-gradient(180deg, rgba(13, 77, 172, 0.08) 0%, #ffffff 100%);
}

.plain-list {
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
  line-height: 1.8;
}

.page-hero,
.section,
.footer {
  margin-top: 22px;
  padding: 34px;
  border-radius: var(--radius-xl);
}

.section-accent {
  background:
    radial-gradient(circle at top right, rgba(16, 185, 129, 0.14), transparent 32%),
    var(--panel);
}

.section-head {
  max-width: 780px;
}

.section-head h3 {
  margin-top: 12px;
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.12;
}

.card-grid,
.plan-grid,
.matrix-grid,
.logo-grid,
.steps-grid,
.stats-strip {
  display: grid;
  gap: 18px;
  margin-top: 28px;
}

.four-up {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.three-up {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.feature-card,
.plan-card,
.paid-card,
.matrix-card,
.faq-item,
.auth-card {
  padding: 24px;
  border-radius: 24px;
  background: linear-gradient(180deg, var(--panel-solid) 0%, #f8fbff 100%);
}

.feature-index {
  width: fit-content;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(21, 99, 214, 0.08);
  color: var(--primary-deep);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.feature-card h4,
.plan-card h4 {
  margin-top: 16px;
  font-size: 24px;
}

.section-actions {
  margin-top: 22px;
}

.text-link {
  color: var(--primary-deep);
  font-weight: 700;
}

.plan-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.paid-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 28px;
}

.plan-card {
  display: flex;
  flex-direction: column;
}

.paid-card {
  display: flex;
  flex-direction: column;
}

.paid-card .btn {
  width: 100%;
  margin-top: auto;
  min-height: 52px;
  font-size: 15px;
  letter-spacing: 0.02em;
}

.plan-card-highlight {
  background: linear-gradient(180deg, rgba(13, 77, 172, 0.98) 0%, rgba(21, 99, 214, 0.94) 100%);
  color: #fff;
  transform: translateY(-8px);
  box-shadow: 0 24px 46px rgba(13, 77, 172, 0.24);
}

.paid-card-highlight {
  background: linear-gradient(180deg, rgba(13, 77, 172, 0.98) 0%, rgba(21, 99, 214, 0.94) 100%);
  color: #fff;
  transform: translateY(-8px);
  box-shadow: 0 24px 46px rgba(13, 77, 172, 0.24);
}

.paid-card-highlight .btn-primary {
  background: #ffffff;
  color: var(--primary-deep);
  box-shadow: 0 14px 26px rgba(5, 30, 71, 0.18);
}

.plan-card-highlight .plan-label,
.plan-card-highlight .plan-price,
.plan-card-highlight li,
.plan-card-highlight h4,
.paid-card-highlight .plan-label,
.paid-card-highlight .plan-price,
.paid-card-highlight li,
.paid-card-highlight h4 {
  color: #fff;
}

.plan-price {
  margin: 10px 0 0;
  font-size: 30px;
  font-weight: 800;
  color: var(--primary-deep);
}

.plan-card ul,
.paid-card ul,
.matrix-card ul {
  margin: 16px 0 0;
  padding-left: 20px;
}

.payment-layout,
.two-column {
  grid-template-columns: minmax(0, 1.04fr) minmax(340px, 0.96fr);
  align-items: start;
}

.payment-points {
  margin-top: 24px;
  display: grid;
  gap: 12px;
}

.payment-points div {
  padding: 16px 18px;
  border-radius: 18px;
  background: var(--panel-soft);
  border: 1px solid rgba(21, 99, 214, 0.08);
}

.payment-points strong,
.payment-points span {
  display: block;
}

.payment-points span {
  margin-top: 6px;
  color: var(--muted);
}

.payment-card {
  padding: 22px;
  border-radius: 28px;
  background: linear-gradient(180deg, var(--panel-solid) 0%, #f8fbff 100%);
}

.payment-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.payment-brand p {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
}

.payment-brand span,
.payment-caption {
  color: var(--muted);
  font-size: 14px;
}

.payment-image {
  margin-top: 18px;
  width: 100%;
  border-radius: 22px;
  border: 1px solid rgba(17, 34, 61, 0.08);
  background: #fff;
}

.payment-caption {
  margin: 16px 0 0;
  line-height: 1.7;
}

.payment-login-link {
  margin-top: 16px;
}

.matrix-grid,
.stats-strip {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.matrix-card h4 {
  font-size: 22px;
}

.steps-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.steps-grid.compact {
  margin-top: 20px;
}

.steps-grid div,
.stats-strip article {
  padding: 18px;
  border-radius: 20px;
  background: var(--panel-soft);
  border: 1px solid rgba(21, 99, 214, 0.08);
}

.steps-grid strong,
.stats-strip strong {
  display: block;
  color: var(--primary-deep);
  font-size: 24px;
}

.steps-grid span,
.stats-strip span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
}

.logo-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.logo-grid span {
  display: grid;
  place-items: center;
  min-height: 94px;
  border-radius: 22px;
  background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
  border: 1px solid var(--line);
  color: var(--primary-deep);
  font-weight: 700;
}

.company-facts {
  margin: 0;
  padding: 0;
  border-radius: 24px;
  overflow: hidden;
}

.company-facts div {
  padding: 20px 24px;
  border-bottom: 1px solid var(--line);
}

.company-facts div:last-child {
  border-bottom: 0;
}

.company-facts dt {
  color: var(--muted);
  font-size: 14px;
}

.company-facts dd {
  margin: 8px 0 0;
  font-size: 18px;
  font-weight: 600;
}

.faq-list {
  display: grid;
  gap: 16px;
  margin-top: 28px;
}

.account-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.auth-card h3 {
  margin: 10px 0 18px;
  font-size: 28px;
}

.field {
  display: grid;
  gap: 8px;
  margin-bottom: 16px;
}

.field span {
  font-size: 14px;
  color: var(--muted);
}

.field input {
  width: 100%;
  min-height: 48px;
  border-radius: 14px;
  border: 1px solid rgba(17, 34, 61, 0.12);
  background: rgba(255, 255, 255, 0.9);
  padding: 0 14px;
  font: inherit;
  color: var(--ink);
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(8, 21, 39, 0.55);
  padding: 20px;
  z-index: 30;
}

.modal-backdrop[hidden] {
  display: none;
}

.modal-card {
  width: min(100%, 860px);
  position: relative;
  border-radius: 28px;
  background: #fff;
  padding: 28px;
  box-shadow: 0 30px 80px rgba(8, 21, 39, 0.25);
  max-height: calc(100vh - 40px);
  overflow: auto;
}

.modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 40px;
  height: 40px;
  border: 0;
  border-radius: 999px;
  background: rgba(17, 34, 61, 0.06);
  color: var(--ink);
  font-size: 26px;
  cursor: pointer;
}

.modal-card h3 {
  margin: 10px 0 0;
  font-size: 34px;
}

.modal-copy {
  margin: 12px 0 0;
  color: var(--muted);
  line-height: 1.7;
}

.modal-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(280px, 0.88fr);
  gap: 20px;
  align-items: start;
}

.modal-primary {
  padding-right: 8px;
}

.modal-price {
  margin-top: 18px;
  font-size: 36px;
  font-weight: 800;
  color: var(--primary-deep);
}

.modal-mini-points {
  margin-top: 18px;
  display: grid;
  gap: 10px;
}

.modal-mini-points span {
  display: block;
  padding: 12px 14px;
  border-radius: 14px;
  background: var(--panel-soft);
  color: var(--muted);
  font-size: 14px;
}

.modal-payment-card {
  padding: 18px;
  border-radius: 22px;
  background: linear-gradient(180deg, var(--panel-solid) 0%, #f8fbff 100%);
  border: 1px solid var(--line);
}

.modal-payment-card .payment-image {
  max-width: 320px;
  margin: 18px auto 0;
}

.modal-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 20px;
}

.modal-actions .btn {
  width: 100%;
}

.footer {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.85fr);
  gap: 24px;
}

.footer-brand {
  margin: 0;
  font-size: 24px;
  font-weight: 800;
}

.footer-meta {
  display: grid;
  gap: 10px;
  color: var(--muted);
  font-size: 14px;
}

.footer-record {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  width: fit-content;
}

.footer-record img {
  width: 20px;
  height: 20px;
  object-fit: contain;
  flex-shrink: 0;
}

@media (max-width: 1120px) {
  .site-header,
  .hero-home,
  .payment-layout,
  .two-column,
  .footer,
  .four-up,
  .three-up,
  .plan-grid,
  .paid-grid,
  .matrix-grid,
  .steps-grid,
  .logo-grid,
  .stats-strip,
  .account-grid {
    grid-template-columns: 1fr;
  }

  .site-header {
    grid-template-columns: 1fr;
    justify-items: start;
  }

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

  .plan-card-highlight {
    transform: none;
  }
}

@media (max-width: 720px) {
  .page-shell {
    width: min(calc(100% - 24px), var(--content-width));
    padding-top: 16px;
  }

  .site-contact,
  .hero-actions {
    display: flex;
    flex-direction: column;
    align-items: stretch;
  }

  .site-contact {
    width: 100%;
  }

  .page-hero,
  .section,
  .footer,
  .hero-home {
    padding-left: 20px;
    padding-right: 20px;
  }

  .hero-metrics {
    grid-template-columns: 1fr;
  }

  .modal-layout,
  .modal-actions {
    grid-template-columns: 1fr;
  }
}