:root {
  color-scheme: light;
  --bg: #f4f1ea;
  --surface: #fffdf8;
  --surface-2: #f9f7f0;
  --ink: #161a18;
  --muted: #646962;
  --faint: #8a8e86;
  --line: #ded8cb;
  --line-strong: #bfb7a6;
  --accent: #1f6f63;
  --accent-dark: #154c45;
  --accent-soft: #dfeee9;
  --blue: #3f678f;
  --blue-soft: #e4ebf3;
  --amber: #b98720;
  --amber-soft: #f5ebd5;
  --coral: #ba5d49;
  --coral-soft: #f1dfd9;
  --shadow: 0 26px 70px rgba(40, 36, 28, 0.11);
  --radius: 8px;
  --display: "Iowan Old Style", "Songti SC", "STSong", Georgia, serif;
  --body: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  font-family: var(--body);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(90deg, rgba(31, 111, 99, 0.06) 0 1px, transparent 1px 100%),
    linear-gradient(180deg, rgba(31, 111, 99, 0.05) 0 1px, transparent 1px 100%),
    var(--bg);
  background-size: 44px 44px;
  overflow-x: hidden;
}

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

button,
input {
  font: inherit;
}

h1,
h2,
h3,
p,
li {
  margin-top: 0;
  overflow-wrap: anywhere;
  word-break: break-word;
}

h1 {
  max-width: 800px;
  margin-bottom: 18px;
  font-family: var(--display);
  font-size: 54px;
  font-weight: 760;
  line-height: 1.04;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 14px;
  font-family: var(--display);
  font-size: 30px;
  font-weight: 740;
  line-height: 1.16;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 8px;
  font-size: 18px;
  line-height: 1.35;
  letter-spacing: 0;
}

.app-shell {
  display: grid;
  grid-template-columns: 248px minmax(0, 1fr);
  min-height: 100vh;
}

.rail {
  position: sticky;
  top: 0;
  align-self: start;
  display: flex;
  flex-direction: column;
  gap: 28px;
  min-height: 100vh;
  padding: 28px 22px;
  border-right: 1px solid rgba(222, 216, 203, 0.92);
  background: rgba(255, 253, 248, 0.9);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 850;
}

.brand-mark {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background:
    linear-gradient(90deg, transparent 44%, rgba(255, 253, 248, 0.95) 44% 56%, transparent 56%),
    linear-gradient(180deg, var(--accent) 0 50%, var(--coral) 50%);
  box-shadow: 0 0 0 5px rgba(31, 111, 99, 0.1);
}

.rail-nav {
  display: grid;
  gap: 6px;
}

.rail-nav a {
  display: flex;
  align-items: center;
  min-height: 42px;
  padding: 0 12px;
  border-radius: var(--radius);
  color: var(--muted);
  font-size: 14px;
  font-weight: 760;
}

.rail-nav a:hover {
  color: var(--ink);
  background: var(--surface-2);
}

.rail-note {
  margin-top: auto;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-2);
}

.rail-note span,
.eyebrow,
.card-kicker,
.calculator-result span {
  display: block;
  color: var(--faint);
  font-size: 12px;
  font-weight: 850;
  letter-spacing: 0.08em;
  line-height: 1.4;
}

.rail-note strong {
  display: block;
  margin-top: 6px;
  color: var(--accent-dark);
  font-size: 15px;
}

.workspace {
  width: min(1240px, 100%);
  margin: 0 auto;
  padding: 34px 32px 60px;
}

.hero-panel,
.section-grid,
.section-block,
.sources-band {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 253, 248, 0.94);
  box-shadow: var(--shadow);
}

.hero-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.46fr);
  gap: 30px;
  align-items: stretch;
  min-height: 486px;
  padding: 36px;
  background:
    linear-gradient(120deg, rgba(223, 238, 233, 0.88), rgba(255, 253, 248, 0.92) 46%),
    var(--surface);
}

.hero-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent-dark);
}

.lead {
  max-width: 720px;
  margin-bottom: 0;
  color: #343a36;
  font-size: 19px;
  line-height: 1.74;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.primary-action,
.secondary-action,
.text-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  border-radius: var(--radius);
  font-weight: 820;
}

.primary-action {
  padding: 0 18px;
  color: #fffdf8;
  background: var(--accent-dark);
  box-shadow: 0 14px 24px rgba(21, 76, 69, 0.18);
}

.secondary-action {
  padding: 0 18px;
  border: 1px solid var(--line-strong);
  color: var(--ink);
  background: rgba(255, 253, 248, 0.82);
}

.text-link {
  min-height: 38px;
  color: var(--accent-dark);
  font-size: 14px;
}

.decision-card {
  display: grid;
  align-content: center;
  gap: 26px;
  min-width: 0;
  padding: 30px;
  border: 1px solid rgba(31, 111, 99, 0.2);
  border-radius: var(--radius);
  background: #fffdf8;
}

.score-ring {
  display: grid;
  place-items: center;
  width: 178px;
  height: 178px;
  margin: 0 auto;
  border-radius: 50%;
  background:
    radial-gradient(circle at center, #fffdf8 0 56%, transparent 57%),
    conic-gradient(var(--accent) 0 82%, #e5e2d9 82% 100%);
}

.score-ring span {
  display: block;
  margin-top: 10px;
  color: var(--accent-dark);
  font-size: 46px;
  font-weight: 880;
  line-height: 1;
}

.score-ring small {
  display: block;
  color: var(--muted);
  font-size: 12px;
  font-weight: 760;
}

.decision-card p,
.section-intro,
.compact-list,
.post-meta,
.post-excerpt,
.calculator-result p,
.source-links {
  color: var(--muted);
  line-height: 1.65;
}

.kpi-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin: 16px 0;
}

.kpi {
  min-height: 122px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 253, 248, 0.94);
}

.metric-value {
  display: block;
  color: var(--accent-dark);
  font-family: var(--display);
  font-size: 38px;
  font-weight: 780;
  line-height: 1;
}

.metric-label {
  display: block;
  margin-top: 10px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.4;
}

.section-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.75fr) minmax(380px, 1fr);
  gap: 42px;
  align-items: start;
  margin-top: 16px;
  padding: 30px;
}

.section-copy {
  min-width: 0;
}

.cost-chart,
.calculator {
  display: grid;
  gap: 18px;
  min-width: 0;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-2);
}

.cost-row {
  display: grid;
  gap: 10px;
}

.cost-label {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  min-width: 0;
}

.cost-label strong,
.cost-label span {
  overflow-wrap: anywhere;
}

.cost-label span {
  color: var(--muted);
  font-weight: 820;
}

.bar-track {
  height: 12px;
  overflow: hidden;
  border-radius: 999px;
  background: #e8e4d9;
}

.bar {
  display: block;
  height: 100%;
  border-radius: inherit;
}

.bar.home {
  background: var(--accent);
}

.bar.hybrid {
  background: var(--blue);
}

.bar.center {
  background: var(--amber);
}

.bar.premium {
  background: var(--coral);
}

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

.option-panel,
.guide-card,
.post-card {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 253, 248, 0.96);
}

.option-panel {
  min-height: 320px;
  padding: 28px;
}

.option-panel.preferred {
  border-color: rgba(31, 111, 99, 0.36);
  background: linear-gradient(180deg, #fffdf8, #edf6f2);
}

.option-kicker,
.guide-card span,
.post-tags span {
  display: inline-flex;
  margin-bottom: 14px;
  padding: 5px 9px;
  border-radius: var(--radius);
  color: var(--accent-dark);
  background: var(--accent-soft);
  font-size: 12px;
  font-weight: 850;
}

.compact-list {
  display: grid;
  gap: 12px;
  margin: 18px 0 0;
  padding-left: 18px;
}

.range-control {
  display: grid;
  grid-template-columns: 92px minmax(120px, 1fr) 72px;
  gap: 14px;
  align-items: center;
}

.range-control span,
.toggle-control span {
  font-weight: 760;
}

.range-control input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

.range-control strong {
  text-align: right;
  color: var(--accent-dark);
}

.toggle-control {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 12px;
  align-items: center;
  min-height: 40px;
}

.toggle-control input,
.checklist input {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
}

.calculator-result {
  margin-top: 2px;
  padding: 18px;
  border: 1px solid rgba(31, 111, 99, 0.2);
  border-radius: var(--radius);
  background: #fffdf8;
}

.calculator-result strong {
  display: block;
  color: var(--accent-dark);
  font-family: var(--display);
  font-size: 24px;
  line-height: 1.2;
}

.calculator-result p {
  margin: 8px 0 0;
}

.floor-plan {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 0.9fr;
  grid-template-rows: 130px 110px 92px;
  gap: 10px;
  min-height: 352px;
  padding: 12px;
  border: 2px solid #c8c0ae;
  border-radius: var(--radius);
  background: #fffdf8;
  box-shadow: inset 0 0 0 8px #f5f2ea;
}

.room {
  display: grid;
  place-items: center;
  min-width: 0;
  padding: 12px;
  border: 1px solid rgba(22, 26, 24, 0.12);
  border-radius: 6px;
  text-align: center;
  font-weight: 850;
  line-height: 1.35;
}

.room span {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 680;
}

.master {
  grid-row: span 2;
  background: var(--accent-soft);
}

.nursery {
  background: var(--amber-soft);
}

.aunt {
  grid-row: span 2;
  background: var(--blue-soft);
}

.kitchen {
  grid-column: span 2;
  background: var(--coral-soft);
}

.bath {
  background: #e7eceb;
}

.section-block {
  margin-top: 16px;
  padding: 30px;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 22px;
}

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

.guide-card {
  min-height: 300px;
  padding: 20px;
  background: var(--surface-2);
}

.guide-card:nth-child(2) span {
  color: #6b3a2d;
  background: var(--coral-soft);
}

.guide-card:nth-child(3) span {
  color: #28496d;
  background: var(--blue-soft);
}

.guide-card:nth-child(4) span {
  color: #6c531c;
  background: var(--amber-soft);
}

.guide-card ul {
  display: grid;
  gap: 10px;
  margin: 16px 0 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.58;
}

.filter-bar {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 0 0 14px;
}

.filter-chip {
  flex: 0 0 auto;
  min-height: 40px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--muted);
  background: var(--surface);
  cursor: pointer;
}

.filter-chip.active {
  color: #fffdf8;
  border-color: var(--accent-dark);
  background: var(--accent-dark);
}

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

.post-card {
  display: grid;
  gap: 12px;
  min-height: 248px;
  padding: 18px;
}

.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.post-tags span {
  margin-bottom: 0;
  background: var(--accent-soft);
}

.post-meta {
  font-size: 13px;
}

.post-actions {
  display: flex;
  flex-wrap: wrap;
  align-self: end;
  gap: 8px;
}

.post-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  padding: 0 11px;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 850;
  text-decoration: none;
  line-height: 1;
}

.primary-post {
  color: #fffdf8;
  background: var(--accent-dark);
}

.secondary-post {
  color: var(--accent-dark);
  border: 1px solid var(--line);
  background: var(--surface-2);
}

.post-card a {
  align-self: end;
}

.checklist {
  display: grid;
  gap: 10px;
}

.checklist label {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 15px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-2);
  line-height: 1.55;
}

.sources-band {
  display: grid;
  grid-template-columns: minmax(0, 0.78fr) minmax(320px, 1fr);
  gap: 40px;
  margin-top: 16px;
  padding: 30px;
}

.source-links {
  display: grid;
  gap: 10px;
}

.source-links a {
  display: flex;
  align-items: center;
  min-height: 48px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--accent-dark);
  background: var(--surface-2);
  font-weight: 780;
}

@media (max-width: 1120px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .rail {
    position: sticky;
    z-index: 20;
    flex-direction: row;
    align-items: center;
    min-height: 66px;
    padding: 12px 20px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .rail-nav {
    display: flex;
    gap: 4px;
    overflow-x: auto;
  }

  .rail-note {
    display: none;
  }

  .workspace {
    padding: 22px 20px 48px;
  }

  .hero-panel,
  .section-grid,
  .sources-band {
    grid-template-columns: 1fr;
  }

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

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

  h1 {
    font-size: 42px;
  }
}

@media (max-width: 720px) {
  .rail {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
    min-height: 104px;
    padding: 14px 16px;
  }

  .rail-nav {
    width: 100%;
  }

  .workspace {
    padding: 16px 16px 40px;
  }

  .hero-panel,
  .section-grid,
  .section-block,
  .sources-band {
    width: 100%;
    max-width: calc(100vw - 32px);
    padding: 22px;
    overflow: hidden;
  }

  .hero-panel {
    min-height: 0;
  }

  h1 {
    max-width: 300px;
    font-size: 34px;
    line-break: anywhere;
    word-break: break-all;
  }

  h2 {
    max-width: 300px;
    font-size: 25px;
    line-break: anywhere;
    word-break: break-all;
  }

  .lead {
    max-width: 300px;
    font-size: 17px;
    line-break: anywhere;
    word-break: break-all;
  }

  .hero-copy,
  .decision-card,
  .decision-card p,
  .section-intro {
    max-width: 300px;
  }

  .kpi-strip,
  .decision-matrix,
  .guide-grid,
  .post-grid {
    grid-template-columns: 1fr;
  }

  .range-control {
    grid-template-columns: 1fr;
  }

  .range-control strong {
    text-align: left;
  }

  .floor-plan {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: repeat(4, 96px);
  }

  .master,
  .aunt,
  .kitchen {
    grid-column: span 1;
    grid-row: span 1;
  }

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