:root {
  --navy: #004A8F;
  --navy-deep: #0A2E5C;
  --blue: #2E73B8;
  --blue-light: #EAF3FA;
  --gold: #F39A28;
  --gold-deep: #D9A441;
  --gray: #666666;
  --ink: #223044;
  --white: #FFFFFF;
  --ivory: #F7F3EA;
  --line: rgba(0, 74, 143, .14);
  --shadow: 0 18px 48px rgba(10, 46, 92, .10);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: "Noto Serif SC", "Source Han Serif SC", "Microsoft YaHei", serif;
  font-size: 14px;
  line-height: 1.72;
}
a { color: inherit; text-decoration: none; }
p, h1, h2, h3 { margin-top: 0; }
h1, h2, h3 { line-height: 1.22; letter-spacing: 0; color: var(--navy-deep); }
h1 { font-size: clamp(1.78rem, 3.65vw, 3.25rem); font-weight: 650; }
h2 { font-size: clamp(1.28rem, 2.15vw, 2.05rem); font-weight: 650; }
h3 { font-size: 1.02rem; }

.container { width: min(1120px, calc(100% - 72px)); margin: 0 auto; }
.narrow { width: min(860px, calc(100% - 72px)); }
.section { padding: 76px 0; }
.ivory { background: var(--ivory); }
.deep { background: var(--white); color: var(--ink); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.deep h2, .deep h3 { color: var(--navy-deep); }
.deep p { color: var(--gray); }
.eyebrow { color: var(--gold-deep); font-family: Arial, sans-serif; font-size: .66rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; margin-bottom: 10px; }
.lead { max-width: 720px; color: var(--gray); font-size: clamp(.95rem, 1.55vw, 1.12rem); }
.large-text { color: var(--gray); font-size: .96rem; }
.subtle { font-size: .95rem; color: var(--gray) !important; }

.site-header { position: sticky; top: 0; z-index: 20; height: 68px; display: flex; align-items: center; justify-content: space-between; padding: 0 clamp(28px, 5vw, 72px); background: rgba(255,255,255,.97); border-bottom: 1px solid var(--line); backdrop-filter: blur(12px); font-family: "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif; }
.brand { display: flex; align-items: center; gap: 12px; color: var(--navy); font-weight: 800; }
.logo-brand img { display: block; height: 42px; width: auto; max-width: 218px; object-fit: contain; }
.brand-mark { width: 38px; height: 38px; display: inline-grid; place-items: center; background: var(--navy); color: var(--gold); border: 1px solid rgba(230,189,109,.5); font-family: Georgia, serif; }
.site-nav { display: flex; align-items: center; gap: clamp(14px, 1.6vw, 20px); color: var(--navy); font-size: 13px; font-weight: 500; line-height: 1; white-space: nowrap; }
.site-nav a { padding: 9px 0; border-bottom: 2px solid transparent; }
.site-nav a.active, .site-nav a:hover { border-color: var(--gold); }
.nav-toggle { display: none; width: 44px; height: 44px; border: 0; background: transparent; cursor: pointer; }
.nav-toggle span { display: block; height: 2px; background: var(--navy); margin: 7px 5px; }

.hero { min-height: calc(82vh - 68px); display: grid; align-items: center; background: linear-gradient(135deg, #fff 0%, #fff 48%, var(--blue-light) 100%); color: var(--ink); border-bottom: 1px solid var(--line); }
.hero h1 { color: var(--navy-deep); }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; padding: 64px 0; }
.hero-copy { max-width: 820px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 24px; }

.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 42px; padding: 10px 18px; border: 1px solid transparent; font-weight: 700; font-size: .84rem; cursor: pointer; }
.btn.primary { background: var(--navy); color: var(--white); border-color: rgba(243,154,40,.42); box-shadow: inset 0 -2px 0 rgba(243,154,40,.58); }
.btn.secondary { border-color: var(--gold); color: var(--navy); background: transparent; }
.deep .btn.secondary { color: var(--navy); }
.btn:hover { transform: translateY(-1px); }

.two-col, .resource-grid, .form-layout { display: grid; grid-template-columns: .88fr 1.12fr; gap: 48px; align-items: start; }
.section-head { max-width: 720px; margin-bottom: 28px; }
.section-head p, .card p, .detail-card p, .plan-detail p { color: var(--gray); }
.card-grid { display: grid; gap: 22px; }
.card-grid.three { grid-template-columns: repeat(3, 1fr); }
.card-grid.four { grid-template-columns: repeat(4, 1fr); }
.card, .detail-card, .plan-detail, .contact-card { background: var(--white); border: 1px solid var(--line); padding: 32px; box-shadow: 0 12px 32px rgba(15,39,74,.07); }
.plan-card { min-height: 330px; }
.card-visual { height: 84px; display: grid; place-items: center; margin-bottom: 18px; color: var(--white); background: linear-gradient(135deg, var(--navy-deep), var(--blue)); border-bottom: 3px solid var(--gold); font-weight: 700; font-size: .88rem; }
.text-link { color: var(--gold-deep); border-bottom: 1px solid currentColor; font-weight: 700; }

.module-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.module-grid div { min-height: 108px; display: grid; gap: 6px; align-content: start; padding: 16px; background: var(--white); border: 1px solid var(--line); box-shadow: 0 8px 22px rgba(15,39,74,.045); }
.module-grid strong { color: var(--navy-deep); }
.module-grid span { color: var(--gray); font-size: .78rem; }
.center-action { text-align: center; margin-top: 32px; }

.visual-placeholder { min-height: 280px; display: grid; align-content: end; gap: 8px; padding: 24px; color: var(--white); border: 1px solid rgba(243,154,40,.32); background: linear-gradient(135deg, rgba(10,46,92,.86), rgba(46,115,184,.38)), repeating-linear-gradient(135deg, rgba(255,255,255,.07) 0 1px, transparent 1px 14px); box-shadow: 0 14px 36px rgba(10,46,92,.09); }
.visual-placeholder span { color: var(--gold); font-size: .78rem; letter-spacing: .12em; text-transform: uppercase; }
.visual-placeholder strong { font-size: 1rem; }
.flag-strip { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; align-items: center; }
.flag-strip img { width: 22px; height: 22px; object-fit: cover; border-radius: 50%; border: 1px solid rgba(255,255,255,.55); box-shadow: 0 2px 8px rgba(0,0,0,.12); }
.subtle-flags { margin: 10px 0 12px; }
.subtle-flags img { width: 20px; height: 20px; border-color: rgba(25,50,96,.16); }
.visual-placeholder.small { min-height: 220px; margin-top: 24px; }

.image-panel { overflow: hidden; border: 1px solid rgba(217,164,65,.46); background: var(--white); box-shadow: var(--shadow); }
.image-panel img, .summit-photo img { display: block; width: 100%; height: 100%; object-fit: cover; }
.hero-visual { min-height: 370px; border-bottom: 4px solid var(--gold); }
.dark-image { min-height: 320px; border-color: rgba(217,164,65,.52); }
.side-image { min-height: 220px; margin-top: 22px; }
.summit-photo { overflow: hidden; min-height: 260px; border: 1px solid rgba(217,164,65,.42); box-shadow: var(--shadow); background: var(--white); }
.summit-media { display: grid; grid-template-columns: 1fr 170px; gap: 18px; align-items: stretch; }
.qr-card-inline { display: grid; place-items: center; align-content: center; gap: 12px; padding: 18px; border: 1px solid var(--line); background: var(--white); box-shadow: var(--shadow); color: var(--navy); font-weight: 700; text-align: center; }
.qr-card-inline img, .qr-image { width: min(100%, 160px); aspect-ratio: 1; object-fit: contain; display: block; margin: 0 auto; }
.pathways { background: linear-gradient(180deg, var(--white), #FAFCFE); }
.pathway-intro { margin-bottom: 24px; }
.decision-section { background: var(--white); }
.decision-grid { margin-top: 24px; }
.decision-card { min-height: 170px; border-color: rgba(217,164,65,.35); box-shadow: 0 8px 24px rgba(10,46,92,.055); }
.decision-card span { display: inline-block; margin-bottom: 18px; color: var(--gold-deep); font-family: Georgia, serif; font-size: 1.25rem; }
.decision-card p { color: var(--navy-deep); font-size: 1rem; font-weight: 650; }
.quote-line { margin-top: 26px; padding: 20px 24px; border-left: 3px solid var(--gold); background: var(--ivory); color: var(--navy-deep); font-weight: 700; }
.keyword-card { min-height: 210px; box-shadow: 0 10px 28px rgba(10,46,92,.055); }
.keyword-card span { display: inline-block; margin-bottom: 16px; color: var(--gold); font-family: Georgia, serif; font-size: 1.25rem; }
.keyword-card h3 { color: var(--navy); }
.light-flags { margin-top: 24px; }
.light-flags img { width: 22px; height: 22px; border-color: rgba(0,74,143,.16); }
.editorial-media { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; align-items: stretch; margin-top: -20px; }
.editorial-media .image-panel { min-height: 270px; }
.photo-text { display: grid; align-content: center; padding: 34px; border: 1px solid var(--line); background: linear-gradient(135deg, var(--white), var(--blue-light)); }
.photo-text p { color: var(--gray); }
.about-pillars h2, .pillar-title { font-size: clamp(1.08rem, 1.35vw, 1.38rem); white-space: nowrap; }

.summit { background: var(--ivory); }
.qr-box { min-height: 220px; display: grid; place-items: center; border: 1px dashed rgba(25,50,96,.35); background: var(--white); color: var(--gray); }
.cta-section { background: linear-gradient(135deg, var(--navy-deep), var(--navy)); color: var(--white); }
.cta-section h2 { color: var(--white); }
.cta-panel { text-align: center; max-width: 840px; }
.cta-panel p { color: rgba(255,255,255,.82); }

.page-hero { padding: 82px 0 56px; min-height: 350px; display: grid; align-items: center; background: linear-gradient(135deg, var(--navy-deep), var(--navy)); color: var(--white); }
.page-hero h1 { color: var(--white); font-size: clamp(2.35rem, 4vw, 3.15rem); }
.page-hero .eyebrow { color: rgba(255,255,255,.78); font-size: .72rem; letter-spacing: .18em; }
.page-hero p { color: rgba(255,255,255,.84); font-size: .94rem; max-width: 900px; }
.model-layers span, .dimension-grid span { color: var(--gold-deep); font-family: Georgia, serif; font-size: 1.35rem; }
.dimension-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.dimension-grid article { min-height: 190px; padding: 24px; border: 1px solid var(--line); background: var(--white); box-shadow: 0 10px 28px rgba(10,46,92,.055); }
.dimension-grid article h3 { color: var(--navy); }
.dimension-grid article p, .risk-list p { color: var(--gray); }
.risk-list { display: grid; gap: 12px; }
.risk-list p { margin: 0; padding: 16px 18px; border-left: 3px solid var(--gold); background: var(--white); box-shadow: 0 8px 20px rgba(10,46,92,.045); }
.stack, .plan-stack { display: grid; gap: 22px; }
.detail-card > span, .plan-title span { color: var(--gold-deep); font-family: Georgia, serif; font-size: 1.55rem; }
.plan-title { display: flex; gap: 18px; align-items: baseline; }
.plan-title h2 { display: grid; gap: 6px; }
.plan-title h2 small { color: var(--gold-deep); font-family: Arial, sans-serif; font-size: .78rem; font-weight: 700; letter-spacing: .08em; }
.featured-plan { border-color: rgba(217,164,65,.55); box-shadow: var(--shadow); }

.deliverable-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 26px; }
.deliverable-grid article { min-height: 170px; padding: 24px; border: 1px solid rgba(217,164,65,.38); background: var(--white); box-shadow: 0 10px 26px rgba(10,46,92,.055); }
.deliverable-grid span { display: inline-block; margin-bottom: 14px; color: var(--gold-deep); font-family: Georgia, serif; font-size: 1.2rem; }
.deliverable-grid h3 { color: var(--navy); }
.deliverable-grid p { color: var(--gray); }

.form-side { background: var(--ivory); padding: 32px; border: 1px solid var(--line); }
.diagnosis-form { display: grid; gap: 16px; background: var(--white); padding: 32px; border: 1px solid var(--line); box-shadow: 0 12px 32px rgba(15,39,74,.07); }
label { display: grid; gap: 7px; color: var(--navy); font-weight: 700; }
input, select, textarea { width: 100%; border: 1px solid var(--line); background: var(--white); color: var(--ink); padding: 10px 12px; font: inherit; }
input:focus, select:focus, textarea:focus { outline: 2px solid rgba(230,189,109,.35); border-color: var(--gold); }
fieldset { border: 1px solid var(--line); padding: 16px; }
legend { color: var(--navy); font-weight: 700; }
.check { display: flex; align-items: center; gap: 10px; color: var(--gray); font-weight: 400; }
.check input { width: auto; }
.form-message { color: var(--navy); font-weight: 700; min-height: 28px; }

.contact-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.qr-card { text-align: center; }
.qr-card p { margin-bottom: 0; }
.site-footer { background: #07335F; color: rgba(255,255,255,.78); padding: 34px 0; }
.footer-grid { display: flex; justify-content: space-between; gap: 26px; }
.site-footer strong { color: var(--white); }
.site-footer p { margin: 0 0 6px; }

@media (max-width: 900px) {
  .nav-toggle { display: block; }
  .site-nav { position: fixed; top: 72px; left: 0; right: 0; display: none; flex-direction: column; align-items: stretch; gap: 0; padding: 16px 24px 24px; background: var(--white); border-bottom: 1px solid var(--line); }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 12px 0; }
  .logo-brand img { height: 36px; max-width: 184px; }
  .hero { min-height: auto; }
  .hero-grid, .two-col, .resource-grid, .form-layout, .contact-grid, .summit-media { grid-template-columns: 1fr; gap: 30px; }
  .card-grid.three, .card-grid.four, .module-grid, .dimension-grid { grid-template-columns: 1fr; }
  .deliverable-grid { grid-template-columns: 1fr; }
  .container, .narrow { width: min(100% - 32px, 1120px); }
  .section { padding: 56px 0; }
  .hero-grid { padding: 54px 0; }
  .visual-placeholder { min-height: 250px; }
  .hero-visual, .dark-image, .summit-photo { min-height: 230px; }
  .btn { width: 100%; }
  .hero-actions { flex-direction: column; }
  body { font-size: 14px; }
  h1 { font-size: clamp(1.72rem, 8vw, 2.2rem); }
  .page-hero { min-height: auto; }
  .page-hero h1 { font-size: clamp(1.82rem, 8vw, 2.35rem); }
  h2 { font-size: clamp(1.25rem, 5vw, 1.65rem); }
  .flag-strip img { width: 18px; height: 18px; }
  .footer-grid { flex-direction: column; }
  .card, .detail-card, .plan-detail, .contact-card, .form-side, .diagnosis-form { padding: 22px; }
  .editorial-media { grid-template-columns: 1fr; margin-top: 0; }
  .about-pillars h2, .pillar-title { white-space: normal; font-size: 1.22rem; }
}