:root {
  --bg: #ffffff;
  --surface: #f6f8fb;
  --card: #ffffff;
  --text: #172033;
  --muted: #5f6f87;
  --line: #dce4ef;
  --primary: #1769e0;
  --primary-dark: #0f4fb1;
  --primary-soft: #e9f2ff;
  --success: #0f8f5b;
  --error: #c73636;
  --shadow: 0 18px 50px rgba(23, 32, 51, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 14px max(20px, calc((100vw - 1120px) / 2));
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.brand,
.nav,
.hero-actions {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-weight: 800;
}

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

.nav {
  gap: 18px;
  color: var(--muted);
  font-size: 15px;
}

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

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(280px, 0.55fr);
  gap: 36px;
  align-items: center;
  min-height: 620px;
  padding: 88px max(20px, calc((100vw - 1120px) / 2)) 72px;
  background: linear-gradient(180deg, #f8fbff 0%, #fff 100%);
}

.hero h1,
.section-heading h2,
.contact-copy h2,
.bottom-cta h2 {
  margin: 0;
  line-height: 1.16;
}

.hero h1 {
  max-width: 760px;
  font-size: clamp(38px, 7vw, 72px);
  letter-spacing: 0;
}

.hero-subtitle {
  max-width: 760px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 20px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--primary);
  font-size: 14px;
  font-weight: 800;
}

.hero-actions {
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 800;
  cursor: pointer;
  transition: background-color 0.18s ease, border-color 0.18s ease, color 0.18s ease, transform 0.18s ease;
}

.button:hover {
  transform: translateY(-1px);
}

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

.button.primary:hover {
  background: var(--primary-dark);
}

.button.secondary {
  background: #fff;
  border-color: var(--line);
  color: var(--text);
}

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

.hero-panel div {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow);
}

.hero-panel span {
  display: block;
}

.metric {
  color: var(--primary);
  font-size: 34px;
  font-weight: 900;
  line-height: 1;
}

.section {
  padding: 78px max(20px, calc((100vw - 1120px) / 2));
}

.band {
  background: var(--surface);
}

.section-heading {
  max-width: 720px;
  margin: 0 auto 34px;
  text-align: center;
}

.section-heading.left {
  margin-right: 0;
  margin-left: 0;
  text-align: left;
}

.section-heading h2,
.contact-copy h2,
.bottom-cta h2 {
  font-size: clamp(28px, 4vw, 42px);
}

.section-heading p:not(.eyebrow),
.contact-copy p {
  color: var(--muted);
}

.card-grid {
  display: grid;
  gap: 16px;
}

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

.card,
.price-card,
.tag-grid span,
.notice-list p {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--card);
}

.card {
  min-height: 172px;
  padding: 22px;
}

.card h3 {
  margin: 0 0 12px;
  font-size: 18px;
}

.card p,
.notice-list p {
  margin: 0;
  color: var(--muted);
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  max-width: 1040px;
  margin: 0 auto;
  padding: 0;
  list-style: none;
}

.feature-list li {
  position: relative;
  padding: 16px 18px 16px 42px;
  border-radius: 8px;
  background: #fff;
  border: 1px solid var(--line);
}

.feature-list li::before {
  position: absolute;
  top: 18px;
  left: 18px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--primary);
  content: "";
}

.two-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 34px;
}

.tag-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.tag-grid span {
  padding: 14px 16px;
  background: var(--primary-soft);
}

.notice-list {
  display: grid;
  gap: 12px;
}

.notice-list p {
  padding: 14px 16px;
}

.steps {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.steps li {
  display: grid;
  gap: 12px;
  justify-items: center;
  padding: 20px 10px;
  border-radius: 8px;
  background: #fff;
  text-align: center;
  font-weight: 800;
}

.steps span {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.price-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 20px;
}

.price-card strong {
  color: var(--primary);
  white-space: nowrap;
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(320px, 1fr);
  gap: 42px;
  align-items: start;
  background: var(--surface);
}

.contact-copy {
  position: sticky;
  top: 92px;
}

.contact-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow);
}

.form-row {
  display: grid;
  gap: 8px;
}

.form-row.full,
.form-submit,
.form-message {
  grid-column: 1 / -1;
}

label {
  font-weight: 800;
}

label span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 500;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px 13px;
  background: #fff;
  color: var(--text);
  font: inherit;
}

textarea {
  resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--primary);
  outline: 3px solid var(--primary-soft);
}

.honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-submit {
  width: 100%;
  min-height: 50px;
}

.form-submit:disabled {
  cursor: not-allowed;
  opacity: 0.72;
  transform: none;
}

.form-message {
  min-height: 24px;
  margin: 0;
  font-weight: 800;
}

.form-message.success {
  color: var(--success);
}

.form-message.error {
  color: var(--error);
}

.bottom-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 44px max(20px, calc((100vw - 1120px) / 2));
  background: var(--text);
  color: #fff;
}

.site-footer {
  padding: 26px 20px;
  color: var(--muted);
  text-align: center;
}

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

  .hero {
    min-height: auto;
    padding-top: 58px;
  }

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

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

  .contact-copy {
    position: static;
  }
}

@media (max-width: 640px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav {
    width: 100%;
    justify-content: space-between;
  }

  .hero-subtitle {
    font-size: 17px;
  }

  .services-grid,
  .feature-list,
  .tag-grid,
  .pricing-grid,
  .contact-form {
    grid-template-columns: 1fr;
  }

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

  .price-card,
  .bottom-cta {
    align-items: flex-start;
    flex-direction: column;
  }
}