:root {
  --bg: #f4f1ea;
  --bg-soft: #ece7df;
  --surface: #fffdfa;
  --surface-muted: rgba(255, 253, 250, 0.78);
  --text: #172127;
  --muted: #66727b;
  --line: rgba(23, 33, 39, 0.1);
  --line-strong: rgba(23, 33, 39, 0.16);
  --primary: #214d56;
  --primary-strong: #193b42;
  --accent: #315f6c;
  --success: #1f6b4f;
  --warning: #9f5d17;
  --danger: #a3342b;
  --shadow-lg: 0 24px 64px rgba(44, 43, 38, 0.1);
  --shadow-md: 0 14px 32px rgba(44, 43, 38, 0.08);
  --radius-xl: 30px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --container: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(33, 77, 86, 0.08), transparent 28%),
    radial-gradient(circle at right bottom, rgba(49, 95, 108, 0.08), transparent 30%),
    linear-gradient(180deg, var(--bg) 0%, #faf7f1 100%);
}

button,
input,
textarea {
  font: inherit;
}

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

.container {
  width: min(var(--container), calc(100% - 32px));
  margin: 0 auto;
}

.section {
  padding: 84px 0;
}

.section-soft {
  background: linear-gradient(180deg, rgba(236, 231, 223, 0.52), rgba(255, 253, 250, 0));
}

.card {
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: var(--radius-xl);
  background: var(--surface-muted);
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(14px);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  padding: 18px 0;
  background: linear-gradient(180deg, rgba(244, 241, 234, 0.92), rgba(244, 241, 234, 0.7));
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(23, 33, 39, 0.06);
}

.nav-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

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

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--primary), var(--primary-strong));
  color: #f5f7f6;
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.brand-text {
  display: grid;
}

.brand-text strong {
  font-size: 16px;
}

.brand-text span {
  color: var(--muted);
  font-size: 13px;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.site-nav a {
  padding: 10px 14px;
  border-radius: 999px;
  color: var(--muted);
  transition: color 0.2s ease, background-color 0.2s ease;
}

.site-nav a:hover {
  color: var(--primary);
  background: rgba(33, 77, 86, 0.08);
}

.hero-section {
  padding: 56px 0 44px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.85fr);
  gap: 24px;
  align-items: stretch;
}

.hero-copy {
  padding: 42px;
  border-radius: 36px;
  background:
    linear-gradient(140deg, rgba(255, 253, 250, 0.98), rgba(243, 239, 232, 0.76));
  border: 1px solid rgba(255, 255, 255, 0.75);
  box-shadow: var(--shadow-lg);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(33, 77, 86, 0.08);
  color: var(--primary);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.eyebrow-light {
  background: rgba(49, 95, 108, 0.08);
}

h1,
h2,
h3 {
  margin: 0;
  letter-spacing: -0.03em;
}

h1 {
  margin-top: 18px;
  font-size: clamp(38px, 5vw, 64px);
  line-height: 1.04;
}

.hero-subtitle,
.section-heading p,
.hero-point p,
.hero-summary p,
.advantage-card p,
.choice-card em,
.toggle-card small,
.case-card p,
.case-card li,
.faq-answer p,
.contact-note li,
.contact-note p,
.site-footer p,
.field-helper,
.status-text {
  color: var(--muted);
}

.hero-subtitle {
  max-width: 720px;
  margin-top: 18px;
  font-size: 18px;
  line-height: 1.85;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 18px;
  border: none;
  border-radius: 14px;
  font-size: 14px;
  font-weight: 800;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
}

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

.btn-primary {
  background: var(--primary-strong);
  color: #f4f7f6;
  box-shadow: 0 16px 28px rgba(25, 59, 66, 0.2);
}

.btn-secondary {
  background: rgba(33, 77, 86, 0.1);
  color: var(--primary);
}

.btn.full {
  width: 100%;
}

.hero-points {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 28px;
}

.hero-point,
.hero-summary,
.advantage-card,
.quote-preview-card,
.quote-text-card,
.contact-note {
  padding: 22px;
}

.hero-point {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.66);
}

.hero-point strong {
  font-size: 16px;
}

.hero-point p {
  margin: 8px 0 0;
  line-height: 1.75;
}

.hero-summary {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.hero-summary-top,
.result-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.hero-summary-top span:first-child,
.result-kicker {
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 0.06em;
}

.summary-chip,
.result-badge,
.case-tag {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  background: rgba(33, 77, 86, 0.08);
  color: var(--primary);
  font-size: 12px;
  font-weight: 800;
}

.summary-chip,
.result-badge {
  padding: 8px 10px;
}

.hero-summary h2 {
  margin-top: 18px;
  font-size: 32px;
}

.hero-summary p {
  margin: 14px 0 0;
  line-height: 1.8;
}

.hero-stats {
  display: grid;
  gap: 14px;
  margin: 24px 0 0;
}

.hero-stats div {
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.hero-stats dt {
  color: var(--muted);
  font-size: 13px;
}

.hero-stats dd {
  margin: 6px 0 0;
  font-size: 24px;
  font-weight: 800;
}

.section-heading {
  max-width: 780px;
  margin: 0 auto 30px;
  text-align: center;
}

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

.section-heading h2 {
  margin-top: 16px;
  font-size: clamp(30px, 4vw, 42px);
}

.section-heading p {
  margin: 14px auto 0;
  line-height: 1.8;
}

.advantage-grid,
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.advantage-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 16px;
  background: rgba(33, 77, 86, 0.1);
  color: var(--primary);
  font-size: 18px;
  font-weight: 800;
}

.advantage-card h3,
.case-card h3,
.contact-note h3 {
  font-size: 22px;
}

.advantage-card p,
.contact-note p,
.contact-note li,
.case-card p,
.case-card li,
.faq-answer p,
.quote-preview-card p,
.quote-preview-card li {
  line-height: 1.8;
}

.builder-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(340px, 0.95fr);
  gap: 24px;
  align-items: start;
}

.builder-card,
.result-card {
  padding: 26px;
}

.form-row,
.choice-grid,
.result-meta,
.quote-copy-grid,
.contact-layout,
.footer-shell {
  display: grid;
  gap: 18px;
}

.form-block + .form-block,
.form-block + .form-row,
.form-row + .form-block {
  margin-top: 20px;
}

.field-label {
  display: block;
  margin-bottom: 10px;
  font-size: 15px;
  font-weight: 800;
}

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

.choice-grid.two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.choice-card,
.toggle-card {
  position: relative;
  display: block;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.72);
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
  cursor: pointer;
}

.choice-card:hover,
.toggle-card:hover,
.faq-question:hover {
  transform: translateY(-1px);
}

.choice-card input,
.toggle-card input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.choice-card span,
.toggle-card span {
  display: grid;
  gap: 8px;
  height: 100%;
  padding: 18px;
}

.choice-card strong,
.toggle-card strong {
  font-size: 16px;
}

.choice-card small,
.toggle-card small {
  color: var(--primary);
  font-size: 13px;
  font-weight: 800;
}

.choice-card em {
  font-style: normal;
  font-size: 13px;
  line-height: 1.7;
}

.choice-card.compact span {
  min-height: 118px;
}

.choice-card input:checked + span,
.toggle-card input:checked + span {
  border-radius: 20px;
  background: linear-gradient(180deg, rgba(33, 77, 86, 0.09), rgba(255, 255, 255, 0.88));
  box-shadow: var(--shadow-md);
}

.choice-card input:checked + span strong,
.toggle-card input:checked + span strong {
  color: var(--primary-strong);
}

.stepper {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr) 48px;
  gap: 10px;
  align-items: center;
}

.step-btn,
.text-input,
.quote-textarea {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fffdfa;
  color: var(--text);
  outline: none;
}

.step-btn {
  height: 48px;
  background: rgba(33, 77, 86, 0.08);
  color: var(--primary);
  font-size: 22px;
}

.text-input,
.quote-textarea {
  width: 100%;
  padding: 14px 16px;
}

.text-input:focus,
.quote-textarea:focus {
  border-color: rgba(33, 77, 86, 0.4);
  box-shadow: 0 0 0 4px rgba(33, 77, 86, 0.08);
}

.field-helper {
  min-height: 22px;
  margin: 10px 0 0;
  font-size: 14px;
}

.field-helper.warning {
  color: var(--warning);
}

.field-helper.error {
  color: var(--danger);
}

.toggle-card span {
  min-height: 120px;
}

.result-card {
  position: sticky;
  top: 104px;
  background:
    linear-gradient(180deg, rgba(24, 52, 57, 0.98), rgba(25, 59, 66, 0.98)),
    var(--surface);
  color: #eef5f3;
  box-shadow: 0 28px 60px rgba(25, 59, 66, 0.2);
}

.result-badge {
  background: rgba(255, 255, 255, 0.12);
  color: #edf3f1;
}

.total-price-wrap {
  margin-top: 20px;
}

.total-price-wrap span,
.result-meta span {
  display: block;
  color: rgba(238, 245, 243, 0.7);
  font-size: 13px;
}

.total-price-wrap strong {
  display: block;
  margin-top: 10px;
  font-size: clamp(42px, 6vw, 64px);
  line-height: 1;
  letter-spacing: -0.05em;
}

.total-price-wrap p {
  margin: 14px 0 0;
  color: rgba(238, 245, 243, 0.82);
  line-height: 1.8;
}

.result-meta {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 20px;
}

.result-meta article {
  padding: 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.08);
}

.result-meta strong {
  display: block;
  margin-top: 8px;
  font-size: 22px;
}

.price-breakdown {
  margin-top: 22px;
  padding: 18px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.08);
}

.price-line {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.price-line:last-child {
  border-bottom: none;
}

.price-line.total {
  padding-top: 18px;
}

.price-line span {
  color: rgba(238, 245, 243, 0.78);
}

.price-line strong {
  font-size: 18px;
}

.price-line.total strong {
  font-size: 22px;
}

.result-actions {
  display: grid;
  gap: 10px;
  margin-top: 22px;
}

.status-text {
  min-height: 22px;
  margin: 12px 0 0;
  font-size: 14px;
}

.status-text.is-success {
  color: #c7f0de;
}

.status-text.is-error {
  color: #ffd8d3;
}

.quote-copy-layout {
  display: grid;
  gap: 28px;
}

.quote-copy-grid {
  grid-template-columns: minmax(0, 1fr) minmax(340px, 0.96fr);
}

.quote-preview-card,
.quote-text-card,
.lead-form {
  padding: 24px;
}

.quote-preview-card h3 {
  margin-bottom: 10px;
  font-size: 18px;
}

.quote-preview-card article + article {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.quote-preview-card ul,
.case-card ul,
.contact-note ul {
  margin: 10px 0 0;
  padding-left: 20px;
}

.quote-textarea {
  min-height: 480px;
  line-height: 1.8;
  resize: vertical;
}

.case-tag {
  width: fit-content;
  padding: 8px 12px;
}

.case-card {
  padding: 24px;
}

.faq-list {
  display: grid;
  gap: 14px;
}

.faq-item {
  overflow: hidden;
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 24px;
  border: none;
  background: transparent;
  color: var(--text);
  text-align: left;
  font-size: 18px;
  font-weight: 700;
  cursor: pointer;
}

.faq-icon {
  color: var(--primary);
  font-size: 22px;
  font-weight: 400;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.24s ease;
}

.faq-item.is-open .faq-answer {
  max-height: 220px;
}

.faq-answer p {
  margin: 0;
  padding: 0 24px 22px;
}

.contact-layout {
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.8fr);
  align-items: start;
}

.contact-note {
  align-self: stretch;
}

.lead-form .form-block + .form-block {
  margin-top: 18px;
}

.lead-textarea {
  min-height: 180px;
}

.form-actions {
  margin-top: 20px;
}

.lead-success {
  display: none;
  margin-top: 18px;
  padding: 16px 18px;
  border-radius: 18px;
  background: rgba(31, 107, 79, 0.08);
  border: 1px solid rgba(31, 107, 79, 0.16);
  color: var(--success);
  line-height: 1.75;
}

.lead-success.is-visible {
  display: block;
}

.site-footer {
  padding: 28px 0 38px;
}

.footer-shell {
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  padding: 24px 0;
  border-top: 1px solid var(--line);
}

.footer-shell strong {
  display: block;
  font-size: 16px;
}

.footer-shell p {
  margin: 10px 0 0;
  max-width: 720px;
  line-height: 1.8;
}

.footer-shell div:last-child {
  display: grid;
  gap: 8px;
  text-align: right;
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 1080px) {
  .hero-grid,
  .builder-layout,
  .quote-copy-grid,
  .contact-layout,
  .advantage-grid,
  .case-grid {
    grid-template-columns: 1fr;
  }

  .result-card {
    position: static;
  }
}

@media (max-width: 760px) {
  .container {
    width: min(100% - 18px, var(--container));
  }

  .site-header {
    position: static;
  }

  .nav-shell {
    display: block;
  }

  .site-nav {
    margin-top: 14px;
  }

  .section {
    padding: 64px 0;
  }

  .hero-copy,
  .hero-summary,
  .builder-card,
  .result-card,
  .quote-preview-card,
  .quote-text-card,
  .lead-form,
  .contact-note,
  .case-card,
  .advantage-card {
    padding: 20px;
  }

  .hero-points,
  .choice-grid.three,
  .choice-grid.two,
  .result-meta,
  .footer-shell {
    grid-template-columns: 1fr;
  }

  .hero-actions,
  .result-actions {
    grid-template-columns: 1fr;
  }

  .btn {
    width: 100%;
  }

  .stepper {
    grid-template-columns: 42px minmax(0, 1fr) 42px;
  }

  .faq-question {
    padding: 18px;
    font-size: 16px;
  }

  .faq-answer p {
    padding: 0 18px 18px;
  }

  .footer-shell div:last-child {
    text-align: left;
  }
}