:root {
  --ink: #0e1c22;
  --ink-2: #1a3d45;
  --ink-3: #244c55;
  --cream: #f4efe6;
  --ivory: #faf8f4;
  --white: #ffffff;
  --terracotta: #d97746;
  --terracotta-dark: #c05f30;
  --gold: #c4a574;
  --muted: #5c7178;
  --line: rgba(14, 28, 34, 0.1);
  --line-strong: rgba(14, 28, 34, 0.16);
  --shadow: 0 18px 50px rgba(14, 28, 34, 0.12);
  --radius: 18px;
  --radius-sm: 12px;
  --header-h: 76px;
  --max: 1180px;
  --font: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--ivory);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

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

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: 0;
  background: none;
}

.skip {
  position: absolute;
  left: -999px;
  top: 8px;
  background: var(--white);
  padding: 8px 14px;
  z-index: 100;
}

.skip:focus {
  left: 8px;
}

.wrap {
  width: min(calc(100% - 40px), var(--max));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-h);
  background: rgba(14, 28, 34, 0.92);
  backdrop-filter: blur(16px);
  color: var(--cream);
  border-bottom: 1px solid rgba(244, 239, 230, 0.08);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.brand img {
  width: 40px;
  height: 40px;
}

.brand-name {
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.04em;
}

.brand-sub {
  display: block;
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.12em;
  opacity: 0.62;
  margin-top: 1px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav a,
.nav-btn {
  padding: 8px 14px;
  font-size: 14px;
  opacity: 0.88;
  border-radius: 999px;
}

.nav a:hover,
.nav-btn:hover {
  background: rgba(244, 239, 230, 0.08);
  opacity: 1;
}

.nav-drop {
  position: relative;
}

.drop-menu {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 180px;
  background: var(--white);
  color: var(--ink);
  border-radius: 14px;
  padding: 8px;
  box-shadow: var(--shadow);
}

.nav-drop:hover .drop-menu,
.nav-drop:focus-within .drop-menu {
  display: block;
}

.drop-menu a {
  display: block;
  padding: 10px 12px;
  border-radius: 10px;
  opacity: 1;
}

.drop-menu a:hover {
  background: var(--cream);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  transition: 0.2s ease;
}

.btn-primary {
  background: var(--terracotta);
  color: var(--white);
}

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

.btn-ghost {
  border: 1px solid rgba(244, 239, 230, 0.28);
  color: var(--cream);
}

.btn-ghost:hover {
  background: rgba(244, 239, 230, 0.08);
}

.btn-light {
  background: var(--white);
  color: var(--ink);
}

.btn-light:hover {
  background: var(--cream);
}

.btn-outline {
  border: 1px solid var(--line-strong);
  background: var(--white);
}

.btn-outline:hover {
  border-color: var(--ink);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid rgba(244, 239, 230, 0.2);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
}

.menu-toggle span {
  width: 18px;
  height: 1.5px;
  background: var(--cream);
}

.hero {
  background:
    radial-gradient(ellipse at 85% 10%, rgba(217, 119, 70, 0.22), transparent 42%),
    radial-gradient(ellipse at 10% 90%, rgba(196, 165, 116, 0.12), transparent 40%),
    linear-gradient(165deg, #0e1c22 0%, #17343c 48%, #0e1c22 100%);
  color: var(--cream);
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 56px;
  align-items: center;
  padding: 72px 0 88px;
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0.72;
  margin-bottom: 18px;
}

.kicker::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--gold);
}

.hero h1 {
  font-size: clamp(36px, 5vw, 58px);
  line-height: 1.18;
  margin: 0 0 18px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.hero-lead {
  font-size: 17px;
  max-width: 36em;
  opacity: 0.82;
  margin: 0 0 28px;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 28px;
}

.hero-stats {
  display: flex;
  gap: 28px;
  padding-top: 8px;
}

.hero-stats b {
  display: block;
  font-size: 22px;
  color: var(--white);
}

.hero-stats span {
  font-size: 13px;
  opacity: 0.65;
}

.panel {
  background: var(--white);
  color: var(--ink);
  border-radius: 22px;
  padding: 22px;
  box-shadow: var(--shadow);
}

.panel-tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  background: var(--cream);
  padding: 5px;
  border-radius: 14px;
  margin-bottom: 18px;
}

.panel-tab {
  min-height: 40px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  color: var(--muted);
}

.panel-tab.active {
  background: var(--white);
  color: var(--ink);
  box-shadow: 0 4px 12px rgba(14, 28, 34, 0.08);
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 12px;
}

.field label {
  font-size: 12px;
  color: var(--muted);
}

.field input,
.field select,
.field textarea {
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0 12px;
  background: var(--ivory);
  font-size: 16px;
}

.field textarea {
  min-height: 96px;
  padding: 12px;
  resize: vertical;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: 2px solid rgba(217, 119, 70, 0.35);
  border-color: var(--terracotta);
  background: var(--white);
}

.row-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.panel .btn {
  width: 100%;
  margin-top: 6px;
}

.modes {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.mode {
  flex: 1;
  min-height: 40px;
  border-radius: 10px;
  border: 1px solid var(--line);
  font-size: 13px;
  font-weight: 600;
}

.mode.active {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--cream);
}

.panel-msg {
  display: none;
  margin-top: 12px;
  padding: 12px;
  border-radius: 12px;
  background: #eef6f1;
  color: #215c3a;
  font-size: 14px;
}

.panel-msg.show {
  display: block;
}

.section {
  padding: 88px 0;
}

.section-head {
  max-width: 640px;
  margin-bottom: 40px;
}

.section h2 {
  font-size: clamp(28px, 3.4vw, 40px);
  line-height: 1.25;
  margin: 0 0 12px;
}

.section-head p {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
}

.cards-3,
.cards-4 {
  display: grid;
  gap: 18px;
}

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

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

.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
}

.card h3 {
  margin: 14px 0 8px;
  font-size: 18px;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.icon {
  width: 46px;
  height: 46px;
  border-radius: 14px;
  background: var(--cream);
  display: grid;
  place-items: center;
  color: var(--ink-2);
}

.alt {
  background: var(--white);
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.checklist {
  list-style: none;
  padding: 0;
  margin: 20px 0 28px;
}

.checklist li {
  position: relative;
  padding: 10px 0 10px 32px;
  border-bottom: 1px solid var(--line);
}

.checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--terracotta);
  box-shadow: inset 0 0 0 4px #f3d4c4;
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.step {
  padding: 8px 0;
}

.step-num {
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--terracotta);
  font-weight: 700;
}

.step h3 {
  margin: 8px 0 8px;
}

.step p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.modes-band {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--line);
  border-radius: 22px;
  overflow: hidden;
  background: var(--white);
}

.mode-item {
  padding: 28px 24px;
  border-right: 1px solid var(--line);
}

.mode-item:last-child {
  border-right: 0;
}

.mode-item h3 {
  margin: 10px 0 8px;
}

.mode-item p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.cta-band {
  background: var(--ink-2);
  color: var(--cream);
}

.cta-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
}

.cta-inner h2 {
  margin: 0 0 8px;
}

.cta-inner p {
  margin: 0;
  opacity: 0.75;
}

.timeline {
  border-left: 2px solid var(--line-strong);
  margin: 8px 0 0 10px;
  padding-left: 22px;
}

.tl-item {
  position: relative;
  padding-bottom: 22px;
}

.tl-item::before {
  content: "";
  position: absolute;
  left: -29px;
  top: 4px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 4px var(--white);
}

.tl-item.done::before {
  background: var(--terracotta);
}

.tl-item strong {
  display: block;
}

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

.page-hero {
  background: var(--ink);
  color: var(--cream);
  padding: 56px 0 48px;
}

.page-hero h1 {
  margin: 0 0 10px;
  font-size: clamp(28px, 4vw, 42px);
}

.page-hero p {
  margin: 0;
  opacity: 0.75;
  max-width: 40em;
}

.form-card {
  max-width: 720px;
  margin: -36px auto 72px;
  background: var(--white);
  border-radius: 22px;
  padding: 28px;
  box-shadow: var(--shadow);
}

.result {
  display: none;
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.result.show {
  display: block;
}

.quote-box {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  background: var(--cream);
  border-radius: 16px;
  padding: 18px;
  margin-bottom: 14px;
}

.quote-box b {
  font-size: 28px;
}

.site-footer {
  background: #0b161a;
  color: rgba(244, 239, 230, 0.82);
  padding: 56px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 32px;
  padding-bottom: 40px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  color: var(--cream);
  font-weight: 700;
}

.footer-brand img {
  width: 36px;
  height: 36px;
}

.site-footer h4 {
  color: var(--cream);
  margin: 0 0 12px;
  font-size: 14px;
}

.site-footer a {
  display: block;
  padding: 5px 0;
  font-size: 14px;
  opacity: 0.78;
}

.site-footer a:hover {
  opacity: 1;
}

.legal {
  border-top: 1px solid rgba(244, 239, 230, 0.1);
  padding: 16px 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 13px;
  opacity: 0.78;
}

.legal a {
  display: inline;
  padding: 0;
  color: var(--gold);
}

.mobile-panel {
  display: none;
}

@media (max-width: 980px) {
  .menu-toggle {
    display: flex;
  }

  .nav,
  .header-actions {
    display: none;
  }

  .nav.open,
  .header-actions.open {
    display: flex;
  }

  .mobile-panel {
    display: none;
    position: fixed;
    inset: var(--header-h) 0 0;
    background: #0e1c22;
    padding: 20px;
    flex-direction: column;
    gap: 8px;
    overflow: auto;
  }

  .mobile-panel.open {
    display: flex;
  }

  .mobile-panel a,
  .mobile-panel .btn {
    min-height: 48px;
    display: flex;
    align-items: center;
    color: var(--cream);
    font-size: 16px;
  }

  .hero-grid,
  .split,
  .cards-3,
  .cards-4,
  .steps,
  .modes-band,
  .footer-grid,
  .cta-inner {
    grid-template-columns: 1fr;
  }

  .cta-inner {
    display: grid;
  }

  .mode-item {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .hero-grid {
    gap: 32px;
    padding: 40px 0 52px;
  }

  .section {
    padding: 56px 0;
  }

  .hero-stats {
    flex-wrap: wrap;
    gap: 18px;
  }

  .row-2 {
    grid-template-columns: 1fr;
  }

  .legal {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 640px) {
  .wrap {
    width: min(calc(100% - 28px), var(--max));
  }

  .panel-tabs {
    grid-template-columns: 1fr;
  }

  .quote-box {
    flex-direction: column;
  }

  .form-card {
    margin: 20px auto 48px;
    padding: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}