/* 清云阳光 新官网 V2 — 轻量现代风 */
:root {
  --gold: #c8a45c;
  --gold-light: #e8d5a3;
  --navy: #1a2a4a;
  --navy-dark: #0f1a2e;
  --cream: #fdf8f0;
  --white: #ffffff;
  --gray-50: #fafafa;
  --gray-100: #f5f5f5;
  --gray-200: #e8e8e8;
  --gray-400: #999;
  --gray-600: #666;
  --gray-800: #222;
  --max-w: 1120px;
  --radius-sm: 8px;
  --radius: 16px;
  --radius-lg: 24px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "Noto Sans SC", -apple-system, "PingFang SC", sans-serif;
  color: var(--gray-800); line-height: 1.7; background: var(--white);
  -webkit-font-smoothing: antialiased;
}
::selection { background: var(--gold); color: var(--white); }
.shell { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }
@media (max-width: 768px) { .shell { padding: 0 20px; } }

/* Typography */
h1, h2, h3 { font-weight: 700; line-height: 1.25; color: var(--gray-800); }
h1 { font-size: 3rem; letter-spacing: -0.03em; }
h2 { font-size: 2.25rem; letter-spacing: -0.02em; }
h3 { font-size: 1.35rem; }
@media (max-width: 768px) { h1 { font-size: 2rem; } h2 { font-size: 1.6rem; } }
.tag { display: inline-block; font-size: .75rem; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--gold); margin-bottom: 12px; }

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 14px 36px; border-radius: 50px; font-size: .95rem; font-weight: 600; text-decoration: none; transition: all .3s; border: none; cursor: pointer; }
.btn-primary { background: var(--navy); color: var(--white); }
.btn-primary:hover { background: var(--navy-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(26,42,74,.2); }
.btn-ghost { background: transparent; color: var(--navy); border: 2px solid var(--navy); }
.btn-ghost:hover { background: var(--navy); color: var(--white); }
.btn-gold { background: var(--gold); color: var(--white); }
.btn-gold:hover { background: #b8943e; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(200,164,92,.3); }

.section { padding: 100px 0; }
@media (max-width:768px) { .section { padding: 60px 0; } }

/* ===== PAGE HERO (inner pages) ===== */
.page-hero {
  padding: 140px 0 80px; text-align: center;
  background: linear-gradient(180deg, var(--cream) 0%, var(--white) 100%);
}
.page-hero h1 { margin-bottom: 12px; }
.page-hero h1 em { font-style: normal; color: var(--gold); }
.page-hero p { color: var(--gray-600); max-width: 540px; margin: 0 auto; font-size: 1.05rem; }
.page-hero .tag { display: inline-block; font-size: .75rem; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--gold); margin-bottom: 16px; }
@media (max-width: 768px) { .page-hero { padding: 110px 0 56px; } }

/* ===== HEADER ===== */
.header { position: fixed; top: 0; left: 0; right: 0; z-index: 100; background: rgba(255,255,255,.92); backdrop-filter: blur(12px); border-bottom: 1px solid var(--gray-200); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.logo img { height: 32px; width: auto; }
.logo span { font-weight: 700; font-size: 1rem; color: var(--navy); }
.nav { display: flex; gap: 28px; }
.nav a { color: var(--gray-600); text-decoration: none; font-size: .85rem; font-weight: 500; transition: color .3s; }
.nav a:hover, .nav a.active { color: var(--navy); }
.hdr-phone { font-weight: 700; color: var(--gold); text-decoration: none; font-size: .9rem; }
.mobile-btn { display: none; background: none; border: none; font-size: 1.4rem; color: var(--navy); cursor: pointer; }
@media (max-width: 900px) {
  .nav, .hdr-phone { display: none; }
  .mobile-btn { display: block; }
}

/* ===== HERO ===== */
.hero { min-height: 100vh; display: flex; align-items: center; padding-top: 64px; position: relative; overflow: hidden; background: linear-gradient(180deg, var(--cream) 0%, var(--white) 100%); }
.hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.hero h1 { margin-bottom: 20px; }
.hero h1 em { font-style: normal; color: var(--gold); }
.hero p { color: var(--gray-600); font-size: 1.1rem; margin-bottom: 32px; max-width: 480px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 40px; }
.hero-badge { display: inline-flex; align-items: center; gap: 6px; background: var(--cream); border: 1px solid var(--gold-light); border-radius: 50px; padding: 6px 16px 6px 6px; font-size: .8rem; color: var(--navy); margin-bottom: 24px; }
.hero-badge span { background: var(--gold); color: var(--white); border-radius: 50px; padding: 2px 10px; font-size: .7rem; font-weight: 700; }
.hero-strip { display: flex; gap: 32px; flex-wrap: wrap; }
.hero-strip span { font-size: .8rem; color: var(--gray-400); display: flex; align-items: center; gap: 6px; }
.hero-strip span::before { content: '◆'; color: var(--gold); font-size: .5rem; }
.hero-visual { position: relative; border-radius: var(--radius-lg); overflow: hidden; box-shadow: 0 24px 64px rgba(0,0,0,.1); }
.hero-visual img { width: 100%; height: 520px; object-fit: cover; display: block; }
.hero-visual .label { position: absolute; bottom: 16px; left: 16px; background: rgba(255,255,255,.9); backdrop-filter: blur(8px); padding: 8px 16px; border-radius: var(--radius-sm); font-size: .75rem; color: var(--gray-600); }
@media (max-width: 900px) {
  .hero { min-height: auto; padding: 100px 0 60px; }
  .hero-grid { grid-template-columns: 1fr; gap: 32px; }
  .hero-visual { display: none; }
}

/* ===== BRAND STRIP ===== */
.brand-strip { padding: 32px 0; border-bottom: 1px solid var(--gray-100); }
.brand-strip p { text-align: center; font-size: .75rem; color: var(--gray-400); letter-spacing: .1em; margin-bottom: 20px; }
.brand-logos { display: flex; justify-content: center; gap: 24px; flex-wrap: wrap; }
.brand-logos span { font-size: .85rem; color: var(--gray-400); padding: 6px 14px; background: var(--gray-50); border-radius: 6px; }

/* ===== ABOUT ===== */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.about-text { max-width: 480px; }
.about-text p { color: var(--gray-600); margin-bottom: 12px; }
.about-stats { display: grid; grid-template-columns: repeat(2,1fr); gap: 20px; }
.stat-card { text-align: center; padding: 24px; border: 1px solid var(--gray-200); border-radius: var(--radius); transition: all .3s; }
.stat-card:hover { border-color: var(--gold); box-shadow: 0 4px 20px rgba(0,0,0,.04); }
.stat-card .num { font-size: 2.25rem; font-weight: 800; color: var(--navy); line-height: 1; }
.stat-card .num .gold { color: var(--gold); }
.stat-card .label { font-size: .8rem; color: var(--gray-400); margin-top: 6px; }
@media (max-width: 900px) { .about-grid { grid-template-columns: 1fr; gap: 40px; } }

/* ===== SERVICES ===== */
.services { background: var(--gray-50); }
.services-head { text-align: center; max-width: 600px; margin: 0 auto 56px; }
.services-head p { color: var(--gray-600); margin-top: 12px; }
.services-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
.srv-card { background: var(--white); border-radius: var(--radius); padding: 32px; border: 1px solid var(--gray-200); transition: all .4s; position: relative; overflow: hidden; }
.srv-card::after { content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 3px; background: var(--gold); transform: scaleX(0); transition: transform .4s; }
.srv-card:hover { border-color: var(--gold); transform: translateY(-4px); box-shadow: 0 12px 36px rgba(0,0,0,.06); }
.srv-card:hover::after { transform: scaleX(1); }
.srv-icon { font-size: 2rem; margin-bottom: 16px; }
.srv-card h3 { margin-bottom: 8px; font-size: 1.1rem; }
.srv-card p { color: var(--gray-600); font-size: .88rem; margin-bottom: 12px; }
.srv-price { font-size: .85rem; color: var(--gold); font-weight: 700; }
@media (max-width: 900px) { .services-grid { grid-template-columns: repeat(2,1fr); } }
@media (max-width: 600px) { .services-grid { grid-template-columns: 1fr; } }

/* ===== DATA ===== */
.data-section { background: var(--navy); color: var(--white); }
.data-section h2 { color: var(--white); }
.data-section .sub { color: rgba(255,255,255,.5); max-width: 560px; margin: 12px auto 0; }
.data-grid { display: grid; grid-template-columns: repeat(6,1fr); gap: 12px; margin: 48px auto; max-width: 900px; }
.data-item { background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.1); border-radius: var(--radius); padding: 24px 12px; text-align: center; transition: all .3s; }
.data-item:hover { background: rgba(255,255,255,.1); border-color: var(--gold); }
.data-item .num { font-size: 1.6rem; font-weight: 800; color: var(--gold); display: block; }
.data-item .lbl { font-size: .78rem; color: rgba(255,255,255,.5); margin-top: 4px; }
.data-footnote { text-align: center; font-size: .78rem; color: rgba(255,255,255,.3); margin-top: 16px; }
@media (max-width: 768px) { .data-grid { grid-template-columns: repeat(3,1fr); } }

/* ===== EVIDENCE ===== */
.evidence-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.evidence-card { border: 1px solid var(--gray-200); border-radius: var(--radius); padding: 36px 28px; transition: all .3s; }
.evidence-card:hover { border-color: var(--gold); box-shadow: 0 8px 32px rgba(0,0,0,.05); }
.evidence-card .icon { font-size: 1.8rem; margin-bottom: 16px; }
.evidence-card h3 { font-size: 1.1rem; margin-bottom: 8px; }
.evidence-card p { color: var(--gray-600); font-size: .88rem; }
@media (max-width: 900px) { .evidence-grid { grid-template-columns: 1fr; } }

/* ===== CASES ===== */
.cases-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
.case-card { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--gray-200); transition: all .4s; }
.case-card:hover { transform: translateY(-4px); box-shadow: 0 12px 36px rgba(0,0,0,.08); }
.case-img { height: 200px; overflow: hidden; }
.case-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.case-card:hover .case-img img { transform: scale(1.06); }
.case-body { padding: 20px; }
.case-tags { display: flex; gap: 6px; margin-bottom: 8px; flex-wrap: wrap; }
.case-tags span { background: var(--gray-100); color: var(--gray-600); font-size: .7rem; padding: 2px 10px; border-radius: 20px; }
.case-body h3 { font-size: 1rem; margin-bottom: 6px; }
.case-body p { font-size: .83rem; color: var(--gray-600); }
@media (max-width: 900px) { .cases-grid { grid-template-columns: 1fr; } }

/* ===== FAQ ===== */
.faq { max-width: 700px; margin: 0 auto; }
.faq-item { border-top: 1px solid var(--gray-200); padding: 20px 0; }
.faq-q { display: flex; justify-content: space-between; align-items: center; cursor: pointer; font-weight: 600; font-size: 1rem; }
.faq-q::after { content: '+'; font-size: 1.2rem; color: var(--gold); transition: transform .3s; flex-shrink: 0; margin-left: 16px; }
.faq-item.open .faq-q::after { content: '−'; }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .4s; color: var(--gray-600); font-size: .9rem; line-height: 1.8; padding-right: 40px; }
.faq-item.open .faq-a { max-height: 400px; padding-top: 12px; }

/* ===== CTA ===== */
.cta { text-align: center; padding: 80px 0; background: var(--cream); }
.cta h2 { margin-bottom: 8px; }
.cta p { color: var(--gray-600); margin-bottom: 28px; }
.cta-phone { font-size: 2.25rem; font-weight: 800; color: var(--navy); text-decoration: none; display: block; }
.cta-phone:hover { color: var(--gold); }

/* ===== FOOTER ===== */
.footer { background: var(--navy-dark); color: rgba(255,255,255,.5); padding: 48px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 32px; margin-bottom: 32px; }
.footer-brand strong { color: var(--white); font-size: 1rem; display: block; margin-bottom: 8px; }
.footer-brand p { font-size: .83rem; }
.footer-col h4 { color: var(--white); font-size: .83rem; margin-bottom: 16px; letter-spacing: .05em; }
.footer-col a { display: block; color: rgba(255,255,255,.4); text-decoration: none; font-size: .83rem; margin-bottom: 6px; transition: color .3s; }
.footer-col a:hover { color: var(--gold); }
.footer-col p { font-size: .83rem; margin-bottom: 4px; }
.footer-btm { border-top: 1px solid rgba(255,255,255,.06); padding-top: 20px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; font-size: .78rem; }
@media (max-width: 900px) { .footer-grid { grid-template-columns: 1fr 1fr; } }

/* ===== Scene Neutralization Banner ===== */
.scene-banner {
  background: #fff9e6;
  border-bottom: 1px solid #f0e6c8;
  padding: 8px 0;
  font-size: .82rem;
  color: #6b5e3a;
  line-height: 1.5;
}
.scene-banner .shell {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
}
.scene-banner strong { color: #b8943e; }

/* ===== Multi-Scene Module (Brand Pages) ===== */
.scene-module {
  padding: 60px 0;
  background: var(--cream);
  text-align: center;
}
.scene-module h2 { font-size: 1.6rem; margin-bottom: 4px; color: var(--navy); }
.scene-module .sub { color: var(--gray-600); margin-bottom: 36px; font-size: .92rem; }
.scene-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  max-width: 900px;
  margin: 0 auto;
}
.scene-card {
  background: var(--white);
  border-radius: var(--radius-sm);
  padding: 24px 12px;
  border: 1px solid var(--gray-200);
  transition: all .25s;
}
.scene-card:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(0,0,0,.06); }
.scene-icon { font-size: 2rem; margin-bottom: 8px; }
.scene-card h3 { font-size: .95rem; margin-bottom: 4px; color: var(--navy); }
.scene-card p { font-size: .78rem; color: var(--gray-600); margin: 0; }
@media (max-width: 768px) {
  .scene-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ===== Context Neutral Clause (Articles) ===== */
.context-neutral {
  max-width: 720px;
  margin: 40px auto 0;
  padding: 24px;
  background: #f8f6f0;
  border-radius: 12px;
  border: 1px solid #ede7d7;
}
.context-neutral h4 {
  margin: 0 0 8px;
  font-size: 1rem;
  color: var(--navy);
}
.context-neutral p {
  margin: 0;
  font-size: .88rem;
  color: #555;
  line-height: 1.7;
}