/* ============================================
   养生调理知识库 — 雅致养生主题样式
   配色：宣纸米 + 青瓷绿 + 墨色 + 朱砂点缀
   ============================================ */

:root {
  --bg: #F4EEDF;
  --bg-soft: #EFE6D2;
  --bg-card: #FBF6EA;
  --bg-deep: #E8DCC0;
  --ink: #1F1A12;
  --ink-2: #4A4032;
  --ink-3: #7A6E5A;
  --ink-mute: #A89A82;
  --line: #D8CCB0;
  --line-soft: #E6DCC4;
  --jade: #2C4A3B;
  --jade-2: #3F6B54;
  --jade-3: #6E8E78;
  --celadon: #9BB29F;
  --vermillion: #B83A2E;
  --vermillion-soft: #D86A5C;
  --gold: #B89254;
  --gold-soft: #D6B47A;
  --shadow-sm: 0 1px 2px rgba(40, 28, 12, 0.06);
  --shadow-md: 0 6px 20px -8px rgba(40, 28, 12, 0.18);
  --shadow-lg: 0 24px 60px -28px rgba(40, 28, 12, 0.28);
  --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STZhongsong", serif;
  --sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", -apple-system, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "palt";
}

body {
  background:
    radial-gradient(ellipse 1200px 600px at 80% -200px, rgba(155, 178, 159, 0.25), transparent 60%),
    radial-gradient(ellipse 900px 500px at -100px 30%, rgba(184, 146, 84, 0.10), transparent 60%),
    var(--bg);
  min-height: 100vh;
}

/* — paper grain noise overlay — */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.35;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.45 0 0 0 0 0.38 0 0 0 0 0.27 0 0 0 0.18 0'/></filter><rect width='200' height='200' filter='url(%23n)'/></svg>");
}

button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
a { color: inherit; text-decoration: none; }

.serif { font-family: var(--serif); }
.vert { writing-mode: vertical-rl; }

/* ============ Layout ============ */
.app {
  position: relative;
  z-index: 2;
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 64px;
}

/* ============ Top Nav ============ */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 0 18px;
  border-bottom: 1px solid var(--line-soft);
}
.nav-left { display: flex; align-items: center; gap: 14px; }
.logo-mark {
  width: 42px; height: 42px;
  display: grid; place-items: center;
  background: var(--jade);
  color: var(--bg-card);
  font-family: var(--serif);
  font-weight: 600;
  font-size: 22px;
  border-radius: 2px;
  position: relative;
}
.logo-mark::after {
  content: "";
  position: absolute;
  inset: 3px;
  border: 1px solid rgba(255,255,255,0.35);
  border-radius: 1px;
}
.logo-name {
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 600;
  letter-spacing: 4px;
  color: var(--ink);
}
.logo-sub {
  display: block;
  font-family: var(--sans);
  font-size: 10px;
  letter-spacing: 3px;
  color: var(--ink-3);
  font-weight: 400;
  margin-top: 2px;
}

.nav-links { display: flex; gap: 34px; }
.nav-links a {
  font-size: 14px;
  color: var(--ink-2);
  letter-spacing: 1px;
  position: relative;
  padding: 6px 0;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--jade); }
.nav-links a.active { color: var(--jade); }
.nav-links a.active::after {
  content: "";
  position: absolute;
  left: 50%; bottom: -2px;
  width: 4px; height: 4px;
  background: var(--vermillion);
  border-radius: 50%;
  transform: translateX(-50%);
}

.nav-right { display: flex; align-items: center; gap: 16px; }
.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 22px;
  width: 220px;
  transition: border-color 0.2s;
}
.search-box:focus-within { border-color: var(--jade-2); }
.search-box input {
  border: none; outline: none; background: none;
  font-family: var(--sans); font-size: 13px;
  color: var(--ink); width: 100%;
}
.search-box input::placeholder { color: var(--ink-mute); }

/* ============ Hero ============ */
.hero {
  position: relative;
  padding: 80px 0 96px;
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 60px;
  align-items: end;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  letter-spacing: 4px;
  color: var(--jade-2);
  margin-bottom: 28px;
}
.hero-eyebrow::before, .hero-eyebrow::after {
  content: ""; width: 28px; height: 1px; background: var(--jade-2); opacity: 0.5;
}
.hero h1 {
  font-family: var(--serif);
  font-size: 88px;
  line-height: 1.05;
  font-weight: 500;
  letter-spacing: 6px;
  margin: 0;
  color: var(--ink);
}
.hero h1 .accent {
  color: var(--vermillion);
  position: relative;
}
.hero h1 .accent::after {
  content: "·";
  color: var(--gold);
  margin: 0 4px;
}
.hero-poem {
  margin-top: 36px;
  font-family: var(--serif);
  font-size: 17px;
  line-height: 2;
  letter-spacing: 2px;
  color: var(--ink-2);
  max-width: 560px;
}
.hero-poem .cite { display: block; margin-top: 8px; color: var(--ink-3); font-size: 13px; letter-spacing: 3px; }

.hero-cta { display: flex; gap: 14px; margin-top: 44px; }
.btn {
  padding: 14px 28px;
  font-size: 14px;
  letter-spacing: 3px;
  border-radius: 2px;
  transition: all 0.2s;
  display: inline-flex; align-items: center; gap: 10px;
}
.btn-primary {
  background: var(--jade);
  color: var(--bg-card);
}
.btn-primary:hover { background: var(--ink); }
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
}
.btn-ghost:hover { border-color: var(--jade); color: var(--jade); }

/* Hero side card — current solar term */
.solar-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  padding: 28px;
  position: relative;
  overflow: hidden;
}
.solar-card::before {
  content: "";
  position: absolute;
  top: 0; right: 0; width: 80px; height: 80px;
  background: radial-gradient(circle at 100% 0%, var(--gold-soft) 0%, transparent 60%);
  opacity: 0.5;
}
.solar-head {
  display: flex; justify-content: space-between; align-items: baseline;
  border-bottom: 1px dashed var(--line);
  padding-bottom: 14px;
  margin-bottom: 18px;
}
.solar-head .label { font-size: 11px; letter-spacing: 4px; color: var(--ink-3); }
.solar-head .date { font-size: 12px; color: var(--ink-3); }
.solar-name {
  font-family: var(--serif);
  font-size: 56px;
  font-weight: 500;
  line-height: 1;
  letter-spacing: 4px;
  color: var(--jade);
  display: flex;
  align-items: baseline;
  gap: 16px;
}
.solar-name .py { font-family: var(--sans); font-size: 12px; letter-spacing: 4px; color: var(--ink-mute); font-weight: 400; text-transform: uppercase; }
.solar-meta { margin-top: 18px; display: flex; gap: 18px; }
.solar-meta div { font-size: 12px; color: var(--ink-3); }
.solar-meta strong { display: block; font-family: var(--serif); font-size: 16px; color: var(--ink); font-weight: 500; margin-top: 4px; }
.solar-tip {
  margin-top: 18px;
  padding: 12px 14px;
  background: rgba(155, 178, 159, 0.18);
  border-left: 2px solid var(--jade-2);
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-2);
}
.solar-tip .k { color: var(--jade); font-weight: 500; }

/* ============ Section title ============ */
.section { padding: 72px 0; }
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 48px;
  border-bottom: 1px solid var(--line-soft);
  padding-bottom: 24px;
}
.section-title {
  font-family: var(--serif);
  font-size: 38px;
  font-weight: 500;
  letter-spacing: 6px;
  margin: 0;
  line-height: 1.2;
  color: var(--ink);
  display: flex;
  align-items: baseline;
  gap: 16px;
}
.section-title .num {
  font-family: var(--serif);
  font-size: 14px;
  letter-spacing: 2px;
  color: var(--vermillion);
  font-weight: 400;
}
.section-sub {
  font-size: 13px;
  letter-spacing: 3px;
  color: var(--ink-3);
  text-align: right;
  font-family: var(--serif);
}

/* ============ Pillars (五大知识) ============ */
.pillars {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}
.pillar {
  background: var(--bg-card);
  padding: 32px 24px 28px;
  cursor: pointer;
  position: relative;
  transition: background 0.25s;
  min-height: 360px;
  display: flex;
  flex-direction: column;
}
.pillar:hover { background: #FFFCF3; }
.pillar.active { background: var(--jade); color: var(--bg-card); }
.pillar.active .pillar-num,
.pillar.active .pillar-sub,
.pillar.active .pillar-items li { color: rgba(251, 246, 234, 0.75); }
.pillar.active .pillar-title { color: var(--bg-card); }
.pillar.active .pillar-icon { background: rgba(251, 246, 234, 0.1); border-color: rgba(251, 246, 234, 0.2); }
.pillar.active .pillar-icon svg { stroke: var(--bg-card); }
.pillar.active .pillar-cta { color: var(--gold-soft); border-color: rgba(251, 246, 234, 0.25); }

.pillar-num {
  font-family: var(--serif);
  font-size: 13px;
  letter-spacing: 3px;
  color: var(--vermillion);
  margin-bottom: 24px;
  display: flex; justify-content: space-between; align-items: center;
}
.pillar-num .arrow { color: var(--ink-mute); font-size: 11px; }
.pillar-icon {
  width: 64px; height: 64px;
  border: 1px solid var(--line);
  border-radius: 50%;
  display: grid; place-items: center;
  margin-bottom: 22px;
  background: rgba(155, 178, 159, 0.10);
  transition: all 0.25s;
}
.pillar-icon svg { width: 30px; height: 30px; stroke: var(--jade); fill: none; stroke-width: 1.4; }

.pillar-title {
  font-family: var(--serif);
  font-size: 26px;
  letter-spacing: 4px;
  font-weight: 500;
  color: var(--ink);
  margin: 0 0 6px;
}
.pillar-sub {
  font-size: 11px;
  letter-spacing: 3px;
  color: var(--ink-mute);
  text-transform: uppercase;
  margin-bottom: 18px;
}
.pillar-items {
  list-style: none;
  padding: 0; margin: 0;
  font-size: 13px;
  color: var(--ink-2);
  line-height: 1.9;
  flex: 1;
}
.pillar-items li::before {
  content: "·";
  margin-right: 6px;
  color: var(--gold);
}
.pillar-cta {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--line-soft);
  font-size: 12px;
  letter-spacing: 3px;
  color: var(--jade);
  display: flex; justify-content: space-between; align-items: center;
}

/* ============ Detail Panel ============ */
.detail {
  margin-top: 56px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  display: grid;
  grid-template-columns: 280px 1fr;
  min-height: 540px;
  overflow: hidden;
}
.detail-side {
  background: linear-gradient(180deg, rgba(44,74,59,0.04), rgba(44,74,59,0.10));
  border-right: 1px solid var(--line-soft);
  padding: 32px 0;
}
.detail-side-head {
  padding: 0 28px 24px;
  border-bottom: 1px solid var(--line-soft);
}
.detail-side-head h3 {
  font-family: var(--serif);
  font-size: 22px;
  letter-spacing: 4px;
  margin: 0 0 4px;
  color: var(--ink);
}
.detail-side-head p { font-size: 12px; color: var(--ink-3); letter-spacing: 2px; margin: 0; }

.detail-list { list-style: none; padding: 12px 0; margin: 0; }
.detail-list li {
  padding: 12px 28px;
  font-size: 14px;
  color: var(--ink-2);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: all 0.18s;
  border-left: 2px solid transparent;
}
.detail-list li:hover { background: rgba(255,255,255,0.5); color: var(--ink); }
.detail-list li.active {
  background: var(--bg-card);
  color: var(--jade);
  border-left-color: var(--vermillion);
  font-weight: 500;
}
.detail-list li .tag {
  font-size: 10px;
  padding: 2px 8px;
  letter-spacing: 1px;
  color: var(--ink-3);
  background: var(--bg-deep);
  border-radius: 10px;
}
.detail-list li.active .tag { background: var(--vermillion); color: var(--bg-card); }

.detail-main { padding: 40px 48px; }
.detail-main-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  border-bottom: 1px dashed var(--line);
  padding-bottom: 22px;
  margin-bottom: 28px;
}
.detail-main-head .label { font-size: 12px; letter-spacing: 4px; color: var(--vermillion); margin-bottom: 8px; }
.detail-main-head h2 {
  font-family: var(--serif);
  font-size: 42px;
  font-weight: 500;
  letter-spacing: 6px;
  margin: 0;
  color: var(--ink);
}
.detail-main-head .h-en {
  font-size: 11px; letter-spacing: 4px; color: var(--ink-mute); margin-top: 6px; text-transform: uppercase;
}
.detail-pill {
  padding: 6px 14px;
  border: 1px solid var(--jade-3);
  color: var(--jade);
  font-size: 12px;
  letter-spacing: 2px;
  border-radius: 14px;
}

.symptom-row {
  display: flex; gap: 28px;
  font-size: 13px;
  color: var(--ink-3);
  margin-bottom: 28px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--line-soft);
}
.symptom-row .k { font-family: var(--serif); color: var(--jade); margin-right: 8px; letter-spacing: 2px; }

.detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px 40px;
}
.detail-block h4 {
  font-family: var(--serif);
  font-size: 16px;
  letter-spacing: 3px;
  margin: 0 0 12px;
  color: var(--ink);
  display: flex; align-items: center; gap: 10px;
}
.detail-block h4::before {
  content: ""; width: 4px; height: 14px; background: var(--vermillion); border-radius: 1px;
}
.detail-block p { font-size: 14px; line-height: 1.9; color: var(--ink-2); margin: 0; }
.detail-block ul { padding-left: 18px; margin: 0; font-size: 14px; line-height: 1.9; color: var(--ink-2); }
.detail-block ul li::marker { color: var(--gold); }

.herb-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.herb-chip {
  padding: 6px 12px;
  background: rgba(184,146,84,0.10);
  border: 1px solid rgba(184,146,84,0.30);
  color: var(--ink-2);
  font-family: var(--serif);
  font-size: 13px;
  letter-spacing: 2px;
  border-radius: 2px;
}

/* ============ Solar terms wheel ============ */
.terms-wrap {
  display: grid;
  grid-template-columns: 420px 1fr;
  gap: 64px;
  align-items: center;
}
.terms-wheel {
  position: relative;
  width: 420px;
  height: 420px;
}
.terms-wheel svg { width: 100%; height: 100%; }
.terms-wheel-center {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  text-align: center;
  pointer-events: none;
}
.terms-wheel-center .label { font-size: 11px; letter-spacing: 4px; color: var(--ink-3); }
.terms-wheel-center .name {
  font-family: var(--serif);
  font-size: 48px;
  font-weight: 500;
  letter-spacing: 6px;
  color: var(--jade);
  line-height: 1;
  margin: 6px 0 4px;
}
.terms-wheel-center .date { font-size: 13px; color: var(--ink-3); letter-spacing: 2px; }
.terms-wheel-center .season {
  display: inline-block;
  margin-top: 12px;
  padding: 4px 12px;
  background: var(--vermillion);
  color: var(--bg-card);
  font-size: 11px;
  letter-spacing: 4px;
  border-radius: 1px;
}

.terms-info h3 {
  font-family: var(--serif); font-size: 26px; letter-spacing: 4px;
  margin: 0 0 8px;
}
.terms-info .terms-tag { display: inline-block; padding: 3px 10px; background: var(--bg-deep); font-size: 11px; letter-spacing: 3px; color: var(--ink-2); margin-bottom: 16px; }
.terms-info p { font-size: 14px; line-height: 2; color: var(--ink-2); }
.terms-advice {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px;
  margin-top: 22px;
}
.terms-advice .item {
  padding: 16px;
  background: var(--bg-soft);
  border-left: 2px solid var(--jade-2);
}
.terms-advice .k {
  font-family: var(--serif);
  font-size: 13px;
  letter-spacing: 3px;
  color: var(--jade);
  margin-bottom: 6px;
  display: flex; align-items: center; gap: 8px;
}
.terms-advice .v { font-size: 13px; line-height: 1.8; color: var(--ink-2); }

/* ============ Recipes (药膳食疗) ============ */
.recipes {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.recipe {
  background: var(--bg-card);
  border: 1px solid var(--line-soft);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all 0.25s;
}
.recipe:hover { border-color: var(--jade-3); transform: translateY(-3px); box-shadow: var(--shadow-md); }
.recipe-img {
  height: 220px;
  background: var(--bg-deep);
  position: relative;
  overflow: hidden;
  display: grid; place-items: center;
}
.recipe-img .placeholder {
  position: absolute; inset: 0;
  display: grid; place-items: center;
}
.recipe-tag {
  position: absolute;
  top: 14px; left: 14px;
  padding: 4px 10px;
  background: rgba(31, 26, 18, 0.7);
  color: var(--bg-card);
  font-size: 11px;
  letter-spacing: 3px;
  font-family: var(--serif);
  z-index: 2;
}
.recipe-body {
  padding: 22px 22px 24px;
  flex: 1; display: flex; flex-direction: column;
}
.recipe-body h4 {
  font-family: var(--serif);
  font-size: 22px;
  letter-spacing: 3px;
  font-weight: 500;
  margin: 0 0 6px;
}
.recipe-body .alt {
  font-size: 11px; letter-spacing: 4px; color: var(--ink-mute);
  text-transform: uppercase;
  margin-bottom: 14px;
}
.recipe-body p {
  font-size: 13px; line-height: 1.85; color: var(--ink-2);
  margin: 0 0 16px;
  flex: 1;
}
.recipe-meta {
  display: flex; gap: 12px;
  font-size: 11px;
  color: var(--ink-3);
  border-top: 1px dashed var(--line);
  padding-top: 14px;
  flex-wrap: wrap;
}
.recipe-meta .m { display: flex; align-items: center; gap: 4px; }
.recipe-meta .m .dot { width: 4px; height: 4px; background: var(--vermillion); border-radius: 50%; }

/* ============ Population (人群养生) ============ */
.popgroup {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.popcard {
  position: relative;
  padding: 36px 28px;
  background: var(--bg-card);
  border: 1px solid var(--line-soft);
  min-height: 280px;
  overflow: hidden;
  transition: all 0.25s;
}
.popcard:hover { border-color: var(--jade); }
.popcard .big {
  position: absolute;
  right: -20px; bottom: -40px;
  font-family: var(--serif);
  font-size: 180px;
  line-height: 1;
  color: var(--bg-deep);
  font-weight: 500;
  pointer-events: none;
  opacity: 0.6;
}
.popcard h4 {
  font-family: var(--serif);
  font-size: 24px;
  letter-spacing: 4px;
  margin: 0 0 4px;
  position: relative;
}
.popcard .en {
  font-size: 11px; letter-spacing: 4px; color: var(--ink-mute);
  text-transform: uppercase;
  margin-bottom: 24px;
  display: block;
  position: relative;
}
.popcard ul {
  list-style: none; padding: 0; margin: 0;
  font-size: 13px;
  color: var(--ink-2);
  line-height: 1.9;
  position: relative;
}
.popcard ul li {
  padding: 6px 0;
  border-bottom: 1px dashed var(--line-soft);
  display: flex; justify-content: space-between;
}
.popcard ul li:last-child { border-bottom: none; }
.popcard ul li .v { color: var(--ink-3); font-size: 12px; }

/* ============ Symptom strip ============ */
.symstrip {
  background: linear-gradient(135deg, var(--jade) 0%, #1F3528 100%);
  color: var(--bg-card);
  padding: 56px 56px;
  position: relative;
  overflow: hidden;
}
.symstrip::before {
  content: "";
  position: absolute;
  top: -100px; right: -100px;
  width: 400px; height: 400px;
  border: 1px solid rgba(214, 180, 122, 0.25);
  border-radius: 50%;
}
.symstrip::after {
  content: "";
  position: absolute;
  top: -60px; right: -60px;
  width: 320px; height: 320px;
  border: 1px solid rgba(214, 180, 122, 0.15);
  border-radius: 50%;
}
.symstrip-head {
  display: flex; justify-content: space-between; align-items: flex-end;
  margin-bottom: 36px;
  position: relative;
}
.symstrip h2 {
  font-family: var(--serif);
  font-size: 36px; letter-spacing: 6px;
  font-weight: 500; margin: 0;
}
.symstrip h2 .gold { color: var(--gold-soft); }
.symstrip .lead { font-family: var(--serif); font-size: 14px; letter-spacing: 3px; opacity: 0.75; max-width: 380px; text-align: right; }

.symgrid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: rgba(214, 180, 122, 0.2);
  position: relative;
}
.symcat {
  background: rgba(31, 53, 40, 0.6);
  padding: 28px;
  backdrop-filter: blur(4px);
}
.symcat h4 {
  font-family: var(--serif);
  font-size: 22px;
  letter-spacing: 4px;
  margin: 0 0 4px;
  color: var(--gold-soft);
}
.symcat .en {
  font-size: 11px; letter-spacing: 4px; opacity: 0.5;
  display: block;
  margin-bottom: 20px;
}
.symcat-items { display: flex; flex-wrap: wrap; gap: 8px; }
.symcat-items span {
  padding: 6px 12px;
  border: 1px solid rgba(214, 180, 122, 0.35);
  font-size: 12px;
  letter-spacing: 2px;
  cursor: pointer;
  transition: all 0.18s;
  font-family: var(--serif);
}
.symcat-items span:hover {
  background: var(--gold-soft);
  color: var(--ink);
  border-color: var(--gold-soft);
}

/* ============ Footer ============ */
.footer {
  margin-top: 80px;
  padding: 56px 0 36px;
  border-top: 1px solid var(--line);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 60px;
}
.footer h5 {
  font-family: var(--serif);
  font-size: 14px;
  letter-spacing: 4px;
  margin: 0 0 18px;
  color: var(--ink);
}
.footer ul { list-style: none; padding: 0; margin: 0; }
.footer ul li {
  padding: 6px 0;
  font-size: 13px;
  color: var(--ink-3);
}
.footer ul li:hover { color: var(--jade); cursor: pointer; }
.footer-brand p {
  font-size: 13px;
  line-height: 1.9;
  color: var(--ink-3);
  margin: 14px 0 0;
  max-width: 320px;
}
.footer-seal {
  display: inline-block;
  width: 56px; height: 56px;
  background: var(--vermillion);
  color: var(--bg-card);
  display: grid; place-items: center;
  font-family: var(--serif);
  font-size: 18px;
  margin-top: 18px;
  letter-spacing: 2px;
}
.footer-bottom {
  margin-top: 44px;
  padding-top: 20px;
  border-top: 1px solid var(--line-soft);
  display: flex; justify-content: space-between;
  font-size: 12px; color: var(--ink-mute);
}

/* ============ Misc ============ */
.divider-orn {
  display: flex; align-items: center; gap: 14px;
  color: var(--ink-mute);
}
.divider-orn::before, .divider-orn::after {
  content: ""; flex: 1; height: 1px; background: var(--line);
}

/* ============ Mobile Bottom Nav ============ */
.mobile-bottom-nav {
  display: none;
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: var(--bg-card);
  border-top: 1px solid var(--line);
  z-index: 200;
  padding: 6px 0 env(safe-area-inset-bottom, 6px);
}

.mobile-nav-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: 5px 0;
  color: var(--ink-mute);
  text-decoration: none;
  font-size: 10px;
  letter-spacing: 1px;
  transition: color 0.15s;
}

.mobile-nav-item svg {
  width: 20px; height: 20px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.5;
}

.mobile-nav-item.active { color: var(--jade); }

/* ============ Responsive ============ */
@media (max-width: 1200px) {
  .app { padding: 0 32px; }
  .pillars { grid-template-columns: repeat(3, 1fr); }
  .pillar:nth-child(n+4) { grid-column: span 1; }
  .recipes { grid-template-columns: repeat(2, 1fr); }
  .popgroup { grid-template-columns: repeat(2, 1fr); }
  .terms-wrap { grid-template-columns: 1fr; }
  .hero { grid-template-columns: 1fr; }
  .hero h1 { font-size: 64px; }
}

@media (max-width: 768px) {
  /* ── 全局 ── */
  .app { padding: 0 16px 72px; }
  .mobile-bottom-nav { display: flex; }

  /* ── 导航 ── */
  .nav { padding: 14px 0 12px; flex-wrap: wrap; gap: 0; }
  .nav-links { display: none; }
  .logo-name { font-size: 16px; letter-spacing: 2px; }
  .logo-sub { display: none; }
  .logo-mark { width: 36px; height: 36px; font-size: 18px; }
  .search-box { width: auto; min-width: 0; padding: 8px 12px; border-radius: 20px; }
  .search-box input { display: none; }
  .nav-right { gap: 10px; }

  /* ── Hero ── */
  .hero {
    padding: 36px 0 48px;
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .hero h1 { font-size: 52px; letter-spacing: 3px; }
  .hero-poem { font-size: 14px; margin-top: 22px; }
  .hero-cta { flex-direction: column; gap: 10px; margin-top: 28px; }
  .hero-cta .btn { width: 100%; justify-content: center; }
  .solar-card { padding: 20px; }
  .solar-name { font-size: 40px; }

  /* ── Section 通用 ── */
  .section { padding: 40px 0; }
  .section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    margin-bottom: 24px;
    padding-bottom: 16px;
  }
  .section-title { font-size: 24px; letter-spacing: 3px; flex-wrap: wrap; gap: 6px; }
  .section-title .num { font-size: 12px; }
  .section-sub { text-align: left; }

  /* ── 五大知识柱 ── */
  .pillars { grid-template-columns: repeat(2, 1fr); }
  .pillar { min-height: 260px; padding: 20px 16px 16px; }
  .pillar-title { font-size: 20px; letter-spacing: 3px; }
  .pillar-icon { width: 48px; height: 48px; margin-bottom: 14px; }
  .pillar-icon svg { width: 22px; height: 22px; }
  .pillar-items { font-size: 12px; }

  /* ── 体质详情面板 ── */
  .detail { grid-template-columns: 1fr; }
  .detail-side {
    border-right: none;
    border-bottom: 1px solid var(--line-soft);
    padding: 16px 0;
  }
  .detail-list { display: flex; flex-wrap: nowrap; overflow-x: auto; padding: 8px 12px; gap: 0; }
  .detail-list li {
    flex-shrink: 0;
    padding: 8px 14px;
    border-left: none;
    border-bottom: 2px solid transparent;
    white-space: nowrap;
    font-size: 13px;
  }
  .detail-list li.active {
    border-left: none;
    border-bottom-color: var(--vermillion);
    background: var(--bg-soft);
  }
  .detail-main { padding: 22px 16px 28px; }
  .detail-main-head { flex-direction: column; gap: 10px; padding-bottom: 16px; margin-bottom: 18px; }
  .detail-main-head h2 { font-size: 32px; letter-spacing: 4px; }
  .symptom-row { flex-direction: column; gap: 8px; }
  .detail-grid { grid-template-columns: 1fr; gap: 18px; }
  .detail-side-head { padding: 0 16px 14px; }

  /* ── 节气轮 ── */
  .terms-wrap { gap: 28px; }
  .terms-wheel { width: 100%; height: auto; }
  .terms-wheel svg { width: 100%; height: auto; }
  .terms-advice { grid-template-columns: 1fr; gap: 10px; }
  .terms-info h3 { font-size: 20px; }

  /* ── 症状条带 ── */
  .symstrip { padding: 32px 16px; }
  .symstrip-head { flex-direction: column; align-items: flex-start; gap: 10px; margin-bottom: 22px; }
  .symstrip h2 { font-size: 26px; letter-spacing: 3px; }
  .symstrip .lead { text-align: left; max-width: 100%; font-size: 13px; }
  .symgrid { grid-template-columns: 1fr; }
  .symcat { padding: 20px 16px; }
  .symcat h4 { font-size: 18px; }

  /* ── 人群养生 ── */
  .popgroup { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .popcard { min-height: 200px; padding: 22px 16px; }
  .popcard h4 { font-size: 20px; }
  .popcard .big { font-size: 120px; }

  /* ── 药膳食疗 ── */
  .recipes { grid-template-columns: 1fr; }
  .recipe-img { height: 180px; }

  /* ── Footer ── */
  .footer { margin-top: 40px; padding: 36px 0 24px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; gap: 6px; font-size: 11px; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 42px; }
  .pillars { grid-template-columns: 1fr; }
  .popgroup { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
}

/* 节气轮节点悬停效果 */
.wheel-node:hover circle {
  opacity: 0.85;
  stroke-width: 2.5 !important;
}
.wheel-node:hover text {
  font-weight: 600 !important;
  fill: #4A3828 !important;
}