:root {
  --paper: #FAF8F3;
  --surface: #FFFFFF;
  --ink: #16241F;
  --ink-soft: #38463F;
  --muted: #6B776F;
  --line: #E6E1D6;
  --line-soft: #EFEBE2;
  --primary: #1F5C4D;
  --primary-dark: #143E34;
  --gold: #B0852C;
  --max: 1140px;
  --radius: 14px;
  --serif: "Songti SC", "STSong", "Source Han Serif SC", "Noto Serif SC", Georgia, "Times New Roman", serif;
  --sans: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --shadow: 0 18px 48px rgba(20, 40, 33, 0.08);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

.container {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(250, 248, 243, 0.86);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 14px;
  padding-bottom: 14px;
}
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: inherit; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 40px; height: 40px;
  border-radius: 10px;
  background: var(--primary);
  color: #fff;
  font-family: var(--serif);
  font-weight: 700;
  letter-spacing: 0.04em;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-cn { font-weight: 600; font-size: 15px; }
.brand-en { font-size: 10px; letter-spacing: 0.12em; color: var(--muted); }

.site-nav ul {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 22px;
  margin: 0; padding: 0;
}
.site-nav a {
  text-decoration: none;
  color: var(--ink-soft);
  font-size: 14px;
  transition: color 0.2s;
}
.site-nav a:hover { color: var(--primary); }
.nav-cta {
  background: var(--primary);
  color: #fff !important;
  padding: 8px 16px;
  border-radius: 999px;
}
.nav-cta:hover { background: var(--primary-dark); }
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 14px;
  color: var(--ink);
  cursor: pointer;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  text-decoration: none;
  font-size: 15px;
  font-weight: 600;
  padding: 13px 26px;
  border-radius: 999px;
  transition: transform 0.15s ease, background 0.2s ease, box-shadow 0.2s ease;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-1px); }
.btn-ghost { border: 1px solid var(--line); color: var(--ink); background: transparent; }
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); }
.btn-lg { padding: 16px 38px; font-size: 16px; }

/* ---------- Hero ---------- */
.hero { padding: 72px 0 64px; }
.hero-inner {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}
.eyebrow {
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--primary);
  font-weight: 600;
  margin: 0 0 18px;
}
.hero h1 {
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(34px, 5vw, 54px);
  line-height: 1.18;
  margin: 0 0 14px;
  letter-spacing: 0.01em;
}
.hero-sub {
  font-size: 13px;
  letter-spacing: 0.22em;
  color: var(--muted);
  margin: 0 0 10px;
  text-transform: uppercase;
}
.hero-en-tagline {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--primary);
  margin: 0 0 22px;
}
.hero-lead {
  font-size: 17px;
  color: var(--ink-soft);
  max-width: 30em;
  margin: 0 0 28px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 36px; }
.hero-stats {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin: 0; padding: 0;
  border-top: 1px solid var(--line);
  padding-top: 22px;
}
.hero-stats li { display: flex; flex-direction: column; }
.hero-stats strong { font-family: var(--serif); font-size: 26px; color: var(--primary); }
.hero-stats span { font-size: 12px; color: var(--muted); margin-top: 2px; }
.hero-visual img {
  width: 100%;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  aspect-ratio: 4 / 5;
  object-fit: cover;
}
.media-caption { font-size: 12px; color: var(--muted); margin: 10px 2px 0; }

/* ---------- Section base ---------- */
.section { padding: 80px 0; }
.section-kicker {
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
  font-weight: 600;
  margin: 0 0 14px;
}
.section h2 {
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(26px, 3.4vw, 38px);
  line-height: 1.28;
  margin: 0 0 18px;
  letter-spacing: 0.01em;
}
.section-intro {
  font-size: 16px;
  color: var(--ink-soft);
  max-width: 46em;
  margin: 0 0 44px;
}

/* ---------- Brand Strength (from PPT) ---------- */
.strength { background: var(--paper); }
.strength-eco {
  background: var(--primary-dark);
  color: #EAF2EE;
  border-radius: var(--radius);
  padding: 28px 30px;
  margin-bottom: 40px;
}
.strength-eco-title { font-family: var(--serif); font-size: 18px; color: #fff; margin: 0 0 6px; }
.strength-eco-desc { font-size: 14px; color: #C7D6CF; margin: 0 0 16px; }
.strength-eco-list {
  list-style: none;
  margin: 0; padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}
.strength-eco-list li {
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.16);
  border-radius: 10px;
  padding: 12px 14px;
  font-size: 13px;
  text-align: center;
}
.strength-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.strength-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 24px;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.strength-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.strength-card h3 { font-family: var(--serif); font-size: 19px; margin: 0 0 10px; color: var(--primary); }
.strength-card p { font-size: 14px; color: var(--ink-soft); margin: 0; }
.strength-media { margin-top: 36px; }
.strength-media img { width: 100%; border-radius: var(--radius); box-shadow: var(--shadow); aspect-ratio: 16 / 9; object-fit: cover; }

/* ---------- Why ---------- */
.why { background: var(--surface); }
.why-inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}
.why-points { list-style: none; margin: 28px 0 0; padding: 0; }
.why-points li {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 16px 0;
  border-top: 1px solid var(--line-soft);
  font-size: 15px;
  color: var(--ink-soft);
}
.why-points span { font-family: var(--serif); color: var(--primary); font-weight: 700; }
.why-quote {
  font-family: var(--serif);
  font-size: clamp(18px, 2.4vw, 24px);
  line-height: 1.6;
  color: var(--primary-dark);
  border-left: 3px solid var(--gold);
  margin: 26px 0 22px;
  padding: 6px 0 6px 20px;
}
.why-note {
  font-size: 14px;
  color: var(--ink-soft);
  margin: 18px 0 0;
  padding: 14px 18px;
  background: #F4F2EB;
  border-radius: 0 8px 8px 0;
}

/* ---------- Placeholder (风格示意) ---------- */
.ph {
  position: relative;
  aspect-ratio: var(--ar, 4 / 3);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-align: center;
  padding: 18px;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  background:
    repeating-linear-gradient(135deg, rgba(31,92,77,0.04) 0 14px, transparent 14px 28px),
    linear-gradient(135deg, #F3F1EA, #E7ECE7);
  color: var(--muted);
  overflow: hidden;
}
.ph::after {
  content: "";
  position: absolute;
  inset: 10px;
  border: 1px solid rgba(31,92,77,0.12);
  border-radius: 10px;
  pointer-events: none;
}
.ph-label {
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--primary);
  font-weight: 600;
}
.ph-sub { font-size: 13px; line-height: 1.5; max-width: 22em; }

/* ---------- Assessment ---------- */
.assess-split {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 48px;
  align-items: start;
}
.assess-feature img {
  width: 100%;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  aspect-ratio: 4 / 3;
  object-fit: cover;
}
.assess-feature-cap { margin-top: 18px; }
.assess-feature-cap h3 { font-family: var(--serif); font-size: 20px; margin: 0 0 8px; }
.assess-feature-cap p { color: var(--ink-soft); font-size: 15px; margin: 0; }
.assess-list { list-style: none; margin: 0; padding: 0; counter-reset: a; }
.assess-list li {
  display: flex;
  gap: 20px;
  padding: 22px 0;
  border-top: 1px solid var(--line-soft);
}
.assess-list li:first-child { border-top: none; padding-top: 0; }
.assess-num {
  flex: 0 0 auto;
  width: 44px; height: 44px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-family: var(--serif);
  font-weight: 700;
  font-size: 18px;
}
.assess-list h3 { font-family: var(--serif); font-size: 19px; margin: 2px 0 6px; }
.assess-list p { color: var(--ink-soft); font-size: 15px; margin: 0; }

/* ---------- CLEAR ---------- */
.clear { background: var(--surface); }
.clear-list {
  list-style: none;
  margin: 0; padding: 0;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  counter-reset: c;
}
.clear-list li {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 22px;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.clear-list li:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.clear-num {
  display: grid; place-items: center;
  width: 48px; height: 48px;
  border-radius: 12px;
  background: var(--primary-dark);
  color: #fff;
  font-family: var(--serif);
  font-weight: 700;
  font-size: 22px;
  margin-bottom: 16px;
}
.clear-list h3 { font-family: var(--serif); font-size: 18px; margin: 0 0 8px; }
.clear-list p { font-size: 14px; color: var(--ink-soft); margin: 0; }

/* ---------- Programs ---------- */
.program-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.program-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.program-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.program-feature { border-color: var(--primary); background: #F4F8F5; }
.program-tag {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--primary);
  border: 1px solid var(--primary);
  border-radius: 999px;
  padding: 3px 12px;
  margin-bottom: 12px;
}
.program-card h3 { font-family: var(--serif); font-size: 19px; margin: 0 0 10px; line-height: 1.4; }
.program-card p { font-size: 14px; color: var(--ink-soft); margin: 0; }
.program-nad { background: linear-gradient(135deg, #F7F2E6, #FBF8F3); border-color: var(--gold); }

.nad-feature {
  display: grid;
  grid-template-columns: 1fr 0.85fr;
  gap: 40px;
  align-items: center;
  margin-top: 40px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 36px;
}
.nad-copy h3 { font-family: var(--serif); font-size: 24px; margin: 8px 0 14px; }
.nad-copy p { color: var(--ink-soft); font-size: 15px; margin: 0; }
.nad-media img {
  width: 100%;
  border-radius: 10px;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  box-shadow: var(--shadow);
}

/* ---------- Science / Therapies ---------- */
.therapy-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.therapy-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.therapy-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.therapy-media { aspect-ratio: 4 / 3; overflow: hidden; }
.therapy-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s ease; }
.therapy-card:hover .therapy-media img { transform: scale(1.05); }
.therapy-body { padding: 22px 22px 26px; }
.therapy-body h3 { font-family: var(--serif); font-size: 19px; margin: 0 0 10px; }
.therapy-body p { font-size: 14px; color: var(--ink-soft); margin: 0; }
.therapy-disclaimer {
  margin-top: 28px;
  font-size: 13px;
  color: var(--muted);
  background: #F4F2EB;
  border-left: 3px solid var(--gold);
  padding: 14px 18px;
  border-radius: 0 8px 8px 0;
}

/* ---------- Team ---------- */
.team { background: var(--surface); }
.team-flow {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 18px;
}
.team-step {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 20px;
  text-align: center;
}
.team-step span {
  display: grid; place-items: center;
  width: 42px; height: 42px;
  margin: 0 auto 14px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-family: var(--serif);
  font-weight: 700;
}
.team-step h3 { font-family: var(--serif); font-size: 17px; margin: 0 0 8px; }
.team-step p { font-size: 13px; color: var(--ink-soft); margin: 0; }
.team-media { margin-top: 36px; }

/* ---------- Tracking / Stats ---------- */
.tracking { background: var(--primary-dark); color: #EAF2EE; }
.tracking .section-kicker { color: var(--gold); }
.tracking h2 { color: #fff; }
.tracking .section-intro { color: #C7D6CF; }
.stat-band {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  margin-top: 40px;
  border-top: 1px solid rgba(255,255,255,0.16);
  padding-top: 36px;
}
.stat { text-align: center; }
.stat strong { display: block; font-family: var(--serif); font-size: clamp(28px, 3.4vw, 40px); color: #fff; }
.stat span { font-size: 13px; color: #B9CCC3; }

/* ---------- Audience ---------- */
.audience-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.audience-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 24px;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.audience-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.audience-card h3 { font-family: var(--serif); font-size: 18px; margin: 0 0 10px; color: var(--primary); }
.audience-card p { font-size: 14px; color: var(--ink-soft); margin: 0; }

/* ---------- Insights ---------- */
.insights { background: var(--surface); }
.insight-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}
.insight-card {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 22px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  background: var(--paper);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.insight-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.insight-media .ph { border-style: solid; }
.insight-cat { font-size: 12px; letter-spacing: 0.08em; color: var(--gold); font-weight: 600; margin: 0 0 8px; }
.insight-body h3 { font-family: var(--serif); font-size: 18px; margin: 0 0 8px; line-height: 1.4; }
.insight-body p { font-size: 14px; color: var(--ink-soft); margin: 0; }

/* ---------- FAQ ---------- */
.faq-list { max-width: 820px; }
.faq-list details {
  border-bottom: 1px solid var(--line);
  padding: 6px 0;
}
.faq-list summary {
  cursor: pointer;
  font-family: var(--serif);
  font-size: 18px;
  padding: 18px 0;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; color: var(--primary); font-size: 24px; font-family: var(--sans); }
.faq-list details[open] summary::after { content: "−"; }
.faq-list p { color: var(--ink-soft); font-size: 15px; margin: 0 0 20px; max-width: 60em; }

/* ---------- Contact ---------- */
.contact { background: var(--primary-dark); color: #EAF2EE; text-align: center; }
.contact .section-kicker { color: var(--gold); }
.contact h2 { color: #fff; }
.contact-inner { max-width: 720px; margin: 0 auto; }
.contact-lead { color: #C7D6CF; font-size: 16px; margin: 0 0 30px; }
.contact-steps {
  list-style: none;
  margin: 0 0 36px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  text-align: left;
}
.contact-steps li {
  display: flex;
  align-items: center;
  gap: 14px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: 10px;
  padding: 14px 18px;
  font-size: 14px;
}
.contact-steps span {
  flex: 0 0 auto;
  width: 28px; height: 28px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: var(--gold);
  color: #16241F;
  font-weight: 700;
}

/* ---------- Footer ---------- */
.site-footer { background: #111C18; color: #B9CCC3; padding: 48px 0; }
.footer-inner { display: flex; flex-direction: column; gap: 16px; }
.footer-name { font-family: var(--serif); font-size: 18px; color: #fff; margin: 0; }
.footer-en { font-size: 12px; letter-spacing: 0.06em; margin: 4px 0 0; }
.footer-disclaimer { font-size: 12px; line-height: 1.7; max-width: 60em; margin: 0; opacity: 0.8; }
.footer-powered { font-size: 12px; margin: 0; }
.footer-powered a { color: var(--gold); text-decoration: none; }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero-inner, .why-inner, .assess-split, .nad-feature { grid-template-columns: 1fr; gap: 36px; }
  .clear-list { grid-template-columns: repeat(2, 1fr); }
  .program-grid, .therapy-grid, .audience-grid { grid-template-columns: repeat(2, 1fr); }
  .strength-grid { grid-template-columns: repeat(2, 1fr); }
  .strength-eco-list { grid-template-columns: repeat(2, 1fr); }
  .team-flow { grid-template-columns: repeat(2, 1fr); }
  .stat-band { grid-template-columns: repeat(2, 1fr); gap: 28px 20px; }
  .insight-grid { grid-template-columns: 1fr; }
  .hero-visual img { aspect-ratio: 16 / 10; }
}
@media (max-width: 680px) {
  .site-nav ul { display: none; position: absolute; top: 100%; left: 0; right: 0; flex-direction: column; gap: 0; background: var(--paper); border-bottom: 1px solid var(--line); padding: 8px 24px 16px; }
  .site-nav.open ul { display: flex; }
  .site-nav li { width: 100%; padding: 10px 0; border-top: 1px solid var(--line-soft); }
  .nav-cta { text-align: center; }
  .nav-toggle { display: inline-block; }
  .section { padding: 56px 0; }
  .hero { padding: 48px 0; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 18px; }
  .clear-list, .program-grid, .therapy-grid, .audience-grid, .team-flow, .insight-grid, .contact-steps, .strength-grid, .strength-eco-list { grid-template-columns: 1fr; }
  .stat-band { grid-template-columns: repeat(2, 1fr); }
  .insight-card { grid-template-columns: 1fr; }
}