:root {
  --bg: #f6efe5;
  --bg-strong: #efe4d3;
  --paper: rgba(255, 251, 245, 0.9);
  --paper-solid: #fffaf3;
  --ink: #2d2823;
  --muted: #726860;
  --line: rgba(86, 67, 43, 0.10);
  --rose: #c26d58;
  --rose-dark: #984838;
  --sage: #738c69;
  --teal: #5b8d8d;
  --gold: #cf9e47;
  --shadow: 0 24px 60px rgba(93, 69, 39, 0.12);
  --radius-xl: 30px;
  --radius-lg: 24px;
  --radius-md: 18px;
}

* {
  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 top left, rgba(194, 109, 88, 0.18), transparent 22%),
    radial-gradient(circle at 88% 8%, rgba(115, 140, 105, 0.18), transparent 20%),
    linear-gradient(180deg, #f9f3eb 0%, var(--bg) 50%, var(--bg-strong) 100%);
  min-height: 100vh;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: "Baskerville", "Songti SC", "STSong", serif;
  letter-spacing: 0.02em;
}

p,
li,
input,
textarea,
button,
a {
  font-size: 15px;
  line-height: 1.65;
}

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

button,
input,
textarea {
  font: inherit;
}

.shell {
  max-width: 1280px;
  margin: 0 auto;
  padding: 24px 18px 48px;
}

.product-nav {
  position: sticky;
  top: 16px;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 18px;
  margin-bottom: 18px;
  border-radius: 24px;
  background: rgba(255, 250, 243, 0.78);
  border: 1px solid rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow);
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand span:first-child {
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--rose-dark);
}

.brand span:last-child {
  font-size: 22px;
  font-family: "Baskerville", "Songti SC", serif;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.nav-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--line);
  color: var(--muted);
}

.nav-links a.active {
  background: linear-gradient(135deg, var(--sage) 0%, var(--teal) 100%);
  color: #fff;
  border-color: transparent;
}

.hero-card,
.panel,
.feature-card,
.timeline-card,
.tool-card,
.stat-card,
.review-card,
.summary-card {
  border: 1px solid rgba(255, 255, 255, 0.65);
  background: var(--paper);
  box-shadow: var(--shadow);
}

.hero-card {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 24px;
  padding: 34px;
  border-radius: 34px;
}

.hero-card::after {
  content: "";
  position: absolute;
  right: -56px;
  top: -78px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(207, 158, 71, 0.22), transparent 64%);
}

.eyebrow {
  margin: 0 0 10px;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--rose-dark);
}

.hero-card h1 {
  font-size: clamp(38px, 6vw, 64px);
  line-height: 1.04;
  margin-bottom: 14px;
}

.hero-copy p,
.soft-copy,
.timeline-card p,
.tool-card p,
.summary-card p {
  color: var(--muted);
}

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

.hero-badge,
.soft-badge {
  display: inline-flex;
  width: fit-content;
  align-items: center;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(115, 140, 105, 0.14);
  color: #43553f;
  font-size: 13px;
  font-weight: 600;
}

.page-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 18px;
  margin-top: 18px;
}

.col-4 { grid-column: span 4; }
.col-5 { grid-column: span 5; }
.col-6 { grid-column: span 6; }
.col-7 { grid-column: span 7; }
.col-8 { grid-column: span 8; }
.col-12 { grid-column: span 12; }

.panel,
.feature-card,
.summary-card,
.review-card {
  border-radius: var(--radius-lg);
  padding: 24px;
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.panel-head h2 {
  font-size: 28px;
}

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

.split-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.feature-card {
  background: var(--paper-solid);
}

.list {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}

.list li + li {
  margin-top: 6px;
}

.check-stack {
  display: grid;
  gap: 12px;
}

.check-row {
  display: grid;
  grid-template-columns: 22px 1fr;
  gap: 12px;
  align-items: start;
  padding: 14px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(86, 67, 43, 0.06);
}

.check-row.done {
  background: rgba(115, 140, 105, 0.14);
}

.check-row input {
  margin-top: 5px;
  accent-color: var(--sage);
}

.stat-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.stat-card {
  padding: 16px;
  border-radius: 22px;
}

.stat-card strong {
  display: block;
  font-size: 28px;
  font-family: "Baskerville", "Songti SC", serif;
}

.insight-box,
.quote-card,
.summary-surface {
  padding: 18px;
  border-radius: 20px;
  background: linear-gradient(135deg, rgba(207, 158, 71, 0.12), rgba(194, 109, 88, 0.08));
}

.pills,
.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.pill {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.72);
  color: var(--muted);
  border-radius: 999px;
  padding: 10px 14px;
  cursor: pointer;
}

.pill.active {
  background: linear-gradient(135deg, var(--sage) 0%, var(--teal) 100%);
  color: #fff;
  border-color: transparent;
}

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

.timeline-card,
.tool-card {
  padding: 18px;
  border-radius: 22px;
}

.timeline-card h3,
.tool-card h3 {
  font-size: 22px;
  margin-bottom: 10px;
}

.tiny-line {
  margin-top: 12px;
  color: var(--rose-dark);
  font-size: 13px;
}

.score-card {
  padding: 18px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid rgba(86, 67, 43, 0.06);
}

.score-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.range-input {
  width: 100%;
  padding: 0;
  accent-color: var(--rose);
}

.score-summary {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 18px;
  align-items: center;
  margin-top: 18px;
  padding: 18px;
  border-radius: 24px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.78), rgba(226, 236, 222, 0.68));
}

.score-total {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.score-total strong {
  font-size: 54px;
  font-family: "Baskerville", "Songti SC", serif;
}

.history-list {
  margin: 14px 0 0;
  padding-left: 18px;
  color: var(--muted);
}

.history-list li + li {
  margin-top: 6px;
}

.meta-row span {
  display: inline-flex;
  align-items: center;
  padding: 7px 11px;
  border-radius: 999px;
  background: rgba(194, 109, 88, 0.12);
  color: var(--rose-dark);
  font-size: 12px;
}

.review-card textarea,
.review-card input {
  width: 100%;
  border: 1px solid rgba(86, 67, 43, 0.14);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.82);
  color: var(--ink);
  padding: 13px 14px;
  outline: none;
}

.review-card textarea:focus,
.review-card input:focus {
  border-color: rgba(194, 109, 88, 0.45);
  box-shadow: 0 0 0 4px rgba(194, 109, 88, 0.12);
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.primary-button,
.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 999px;
  cursor: pointer;
}

.primary-button {
  border: none;
  color: #fff;
  background: linear-gradient(135deg, var(--rose) 0%, #de9a63 100%);
  box-shadow: 0 12px 28px rgba(194, 109, 88, 0.22);
}

.secondary-button {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.72);
  color: var(--ink);
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%) translateY(20px);
  opacity: 0;
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(45, 40, 35, 0.92);
  color: #fff;
  font-size: 13px;
  pointer-events: none;
  transition: opacity 160ms ease, transform 160ms ease;
  z-index: 20;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

@media (max-width: 1040px) {
  .hero-card,
  .split-grid,
  .timeline-grid,
  .score-summary,
  .stat-row {
    grid-template-columns: 1fr;
  }

  .col-4,
  .col-5,
  .col-6,
  .col-7,
  .col-8 {
    grid-column: span 12;
  }
}

@media (max-width: 760px) {
  .shell {
    padding: 14px 12px 36px;
  }

  .product-nav {
    top: 10px;
    flex-direction: column;
    align-items: stretch;
  }

  .nav-links {
    justify-content: space-between;
  }

  .nav-links a {
    flex: 1 1 calc(50% - 5px);
  }

  .hero-card,
  .panel,
  .feature-card,
  .review-card,
  .summary-card {
    padding: 18px;
    border-radius: 22px;
  }

  .hero-card h1 {
    font-size: 40px;
  }

  .panel-head h2 {
    font-size: 24px;
  }
}