:root {
    --primary: #1c5e5a;
    --primary-light: #2e8c7c;
    --primary-dark: #0f3e3a;
    --accent: #d4782f;
    --accent-light: #e8944a;
    --bg: #f4f7f5;
    --bg-card: #ffffff;
    --bg-dark: #0f2e2c;
    --text: #1e2a2a;
    --text-light: #4a5e5c;
    --text-on-dark: #d0e8e4;
    --border: #d0dfdc;
    --radius: 12px;
    --radius-lg: 20px;
    --shadow: 0 4px 20px rgba(0,0,0,0.06);
    --shadow-hover: 0 12px 32px rgba(0,0,0,0.12);
    --font: 'Microsoft Sans Serif', 'Microsoft YaHei', 'PingFang SC', sans-serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); background: var(--bg); color: var(--text); line-height: 1.5; }
.container { max-width: 1240px; margin: 0 auto; padding: 0 24px; }
.site-shell { overflow: hidden; }

/* topbar */
.topbar { background: var(--primary-dark); color: var(--text-on-dark); font-size: 0.85rem; padding: 8px 0; }
.topbar__inner { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 6px; }
.topbar__inner span { opacity: 0.9; }

/* header */
.header { background: var(--bg-card); border-bottom: 2px solid var(--primary); position: sticky; top: 0; z-index: 100; box-shadow: 0 2px 12px rgba(0,0,0,0.04); }
.header__inner { display: flex; justify-content: space-between; align-items: center; padding: 14px 0; flex-wrap: wrap; gap: 12px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.brand__mark { width: 36px; height: 36px; background: var(--primary); border-radius: 8px; display: flex; align-items: center; justify-content: center; color: #fff; font-weight: 700; font-size: 1.2rem; }
.brand__mark::before { content: '亿'; color: #fff; font-weight: 700; }
.brand__text { display: flex; flex-direction: column; }
.brand__text strong { font-size: 1.2rem; color: var(--primary-dark); letter-spacing: 1px; }
.brand__text span { font-size: 0.75rem; color: var(--text-light); }
.nav { display: flex; align-items: center; gap: 1.2rem; flex-wrap: wrap; }
.nav a { text-decoration: none; color: var(--text); font-weight: 500; font-size: 0.95rem; padding: 6px 0; border-bottom: 2px solid transparent; transition: 0.2s; }
.nav a:hover { color: var(--accent); border-bottom-color: var(--accent); }
.nav .nav-about { background: var(--accent); color: #fff; padding: 6px 16px; border-radius: 40px; border-bottom: none; font-weight: 600; }
.nav .nav-about:hover { background: var(--accent-light); color: #fff; }

/* hero */
.hero { background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%); padding: 60px 0 70px; position: relative; overflow: hidden; }
.hero::before { content: ''; position: absolute; top: -40%; right: -10%; width: 500px; height: 500px; border-radius: 50%; background: rgba(212,120,47,0.08); pointer-events: none; }
.hero::after { content: ''; position: absolute; bottom: -20%; left: -5%; width: 400px; height: 400px; border-radius: 50%; background: rgba(46,140,124,0.1); pointer-events: none; }
.hero-grid { display: flex; flex-wrap: wrap; gap: 40px; align-items: center; position: relative; z-index: 2; }
.hero-copy { flex: 1.2; min-width: 280px; }
.hero-copy .eyebrow { display: inline-block; background: rgba(255,255,255,0.12); backdrop-filter: blur(4px); padding: 4px 16px; border-radius: 40px; font-size: 0.85rem; color: #fff; margin-bottom: 16px; border: 1px solid rgba(255,255,255,0.15); }
.hero-copy h1 { font-size: 2.6rem; font-weight: 800; color: #fff; line-height: 1.2; margin-bottom: 16px; text-shadow: 0 2px 10px rgba(0,0,0,0.15); }
.hero-copy h1 span { color: var(--accent); }
.hero-copy > p { font-size: 1.1rem; color: #cde8e4; margin-bottom: 20px; max-width: 600px; }
.chip-row { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 14px; }
.chip-row span { background: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.15); padding: 4px 14px; border-radius: 40px; font-size: 0.8rem; color: #e0f0ec; }
.keyword-row { display: flex; flex-wrap: wrap; gap: 8px; }
.keyword-row span { background: rgba(212,120,47,0.2); border: 1px solid rgba(212,120,47,0.3); padding: 2px 12px; border-radius: 40px; font-size: 0.75rem; color: #f5e0c0; }
.hero-panel { flex: 0.8; min-width: 260px; background: rgba(0,0,0,0.2); backdrop-filter: blur(8px); border-radius: var(--radius-lg); padding: 28px 24px; border: 1px solid rgba(255,255,255,0.08); }
.metric-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 20px; }
.metric-item { background: rgba(255,255,255,0.06); border-radius: 10px; padding: 12px; text-align: center; }
.metric-item strong { display: block; font-size: 1.4rem; color: #fff; }
.metric-item span { font-size: 0.7rem; color: #b0d4ce; }
.hero-contact strong { display: block; color: #fff; font-size: 1rem; margin-bottom: 6px; }
.hero-contact a { display: inline-block; font-size: 1.5rem; font-weight: 700; color: var(--accent); text-decoration: none; margin-bottom: 6px; }
.hero-contact a:hover { color: var(--accent-light); }
.hero-contact p { font-size: 0.82rem; color: #b8d6d0; margin-top: 6px; }

/* section */
.section { padding: 60px 0; }
.section-head { text-align: center; margin-bottom: 40px; }
.section-head h2 { font-size: 2rem; font-weight: 700; color: var(--primary-dark); margin-bottom: 4px; }
.section-head span { font-size: 0.85rem; color: var(--text-light); letter-spacing: 2px; text-transform: uppercase; }
.section-head::after { content: ''; display: block; width: 60px; height: 3px; background: var(--accent); margin: 10px auto 0; border-radius: 4px; }

/* about */
.surface-card { background: var(--bg-card); border-radius: var(--radius-lg); padding: 36px; box-shadow: var(--shadow); border: 1px solid var(--border); }
.about-grid { display: flex; flex-wrap: wrap; gap: 36px; align-items: center; }
.about-copy { flex: 1.2; min-width: 260px; }
.about-copy p { margin-bottom: 14px; color: var(--text); line-height: 1.7; }
.about-copy strong { color: var(--primary-dark); }
.about-figure { flex: 0.8; min-width: 240px; text-align: center; }
.about-figure img { width: 100%; max-width: 520px; border-radius: var(--radius); box-shadow: var(--shadow); transition: 0.3s; }
.about-figure img:hover { transform: scale(1.01); }
.about-figure figcaption { font-size: 0.85rem; color: var(--text-light); margin-top: 8px; font-style: italic; }

/* strengths */
.strength-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 24px; }
.strength-card { background: var(--bg-card); border-radius: var(--radius); padding: 24px 20px; box-shadow: var(--shadow); border: 1px solid var(--border); transition: 0.3s; text-align: center; }
.strength-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: var(--primary-light); }
.strength-card .icon { font-size: 2rem; margin-bottom: 12px; }
.strength-card h3 { font-size: 1.1rem; color: var(--primary-dark); margin-bottom: 8px; }
.strength-card p { font-size: 0.88rem; color: var(--text-light); line-height: 1.5; }

/* gallery */
.gallery-stack { display: flex; flex-direction: column; gap: 40px; }
.gallery-group { }
.gallery-group h3 { font-size: 1.3rem; font-weight: 600; color: var(--primary-dark); margin-bottom: 20px; padding-left: 4px; border-left: 4px solid var(--accent); padding-left: 14px; }
.gallery-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 20px; }
.gallery-card { background: var(--bg-card); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); border: 1px solid var(--border); transition: 0.3s; }
.gallery-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); }
.gallery-card img { width: 100%; aspect-ratio: 4/3; object-fit: cover; display: block; }
.gallery-card p { padding: 10px 12px 12px; font-size: 0.85rem; color: var(--text); line-height: 1.4; }

/* faq */
.faq-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 20px; }
.faq-item { background: var(--bg-card); border-radius: var(--radius); padding: 20px 22px; box-shadow: var(--shadow); border: 1px solid var(--border); }
.faq-item h3 { font-size: 1rem; font-weight: 600; color: var(--primary-dark); margin-bottom: 8px; }
.faq-item p { font-size: 0.88rem; color: var(--text-light); line-height: 1.5; }

/* contact */
.cta-panel { background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%); border-radius: var(--radius-lg); padding: 44px 40px; display: flex; flex-wrap: wrap; gap: 30px; align-items: center; position: relative; overflow: hidden; }
.cta-panel::before { content: ''; position: absolute; top: -30%; right: -10%; width: 300px; height: 300px; border-radius: 50%; background: rgba(212,120,47,0.08); pointer-events: none; }
.cta-copy { flex: 1.2; min-width: 260px; position: relative; z-index: 2; }
.cta-copy .eyebrow { font-size: 0.85rem; color: #b0d4ce; letter-spacing: 2px; margin-bottom: 6px; }
.cta-copy h2 { font-size: 1.8rem; font-weight: 700; color: #fff; margin-bottom: 10px; }
.cta-copy > p { font-size: 1rem; color: #cde8e4; margin-bottom: 16px; }
.contact-list { list-style: none; padding: 0; }
.contact-list li { color: #d0ece4; font-size: 0.95rem; padding: 4px 0; }
.cta-contact { flex: 0.7; min-width: 220px; background: rgba(0,0,0,0.2); backdrop-filter: blur(6px); border-radius: var(--radius); padding: 24px 22px; border: 1px solid rgba(255,255,255,0.08); position: relative; z-index: 2; }
.cta-contact strong { display: block; color: #fff; font-size: 1.1rem; margin-bottom: 6px; }
.cta-contact a { display: inline-block; font-size: 1.6rem; font-weight: 700; color: var(--accent); text-decoration: none; margin-bottom: 8px; }
.cta-contact a:hover { color: var(--accent-light); }
.cta-contact__meta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 12px; }
.cta-contact__meta div { background: rgba(255,255,255,0.06); padding: 8px 14px; border-radius: 8px; }
.cta-contact__meta span { display: block; font-size: 0.7rem; color: #a0c8c0; }
.cta-contact__meta strong { font-size: 0.9rem; color: #fff; }

/* footer */
.footer { background: var(--bg-dark); color: var(--text-on-dark); padding: 36px 0 28px; margin-top: 0; }
.footer__inner { display: flex; flex-direction: column; gap: 16px; }
.footer-copy p { font-size: 0.9rem; line-height: 1.6; opacity: 0.85; margin-bottom: 6px; }
.friend-links-row { border-top: 1px solid rgba(255,255,255,0.08); padding-top: 18px; margin-top: 6px; }
.friend-links { display: flex; justify-content: center; flex-wrap: wrap; }
.friend-links__inner { display: flex; flex-wrap: wrap; gap: 8px 16px; justify-content: center; font-size: 0.8rem; }
.friend-links__inner a { color: #8ab8b0; text-decoration: none; transition: 0.2s; font-size: 0.8rem; }
.friend-links__inner a:hover { color: var(--accent); }

/* mobile */
@media (max-width: 768px) {
    .hero-copy h1 { font-size: 1.8rem; }
    .hero-grid { flex-direction: column; }
    .hero-panel { width: 100%; }
    .section-head h2 { font-size: 1.5rem; }
    .about-grid { flex-direction: column; }
    .strength-grid { grid-template-columns: 1fr 1fr; }
    .gallery-grid { grid-template-columns: repeat(2, 1fr); }
    .faq-grid { grid-template-columns: 1fr; }
    .cta-panel { padding: 28px 20px; flex-direction: column; }
    .header__inner { flex-direction: column; align-items: flex-start; }
    .nav { width: 100%; justify-content: flex-start; gap: 0.8rem; }
    .metric-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
    .strength-grid { grid-template-columns: 1fr; }
    .gallery-grid { grid-template-columns: 1fr; }
    .container { padding: 0 16px; }
    .section { padding: 40px 0; }
    .hero { padding: 40px 0; }
}


.friend-links-row{display:block !important;width:100%;margin:18px 0 0;clear:both;}
.friend-links{display:block !important;width:100%;box-sizing:border-box;}
.friend-links__inner{display:flex;flex-wrap:wrap;align-items:center;gap:6px 12px;width:100%;}
.friend-links__inner a{display:inline-block;font-size:12px;line-height:1.6;padding:0;color:inherit;text-decoration:none;opacity:.88;}
.friend-links__inner a:hover{text-decoration:underline;opacity:1;}
@media (max-width: 768px){
  .friend-links-row{margin-top:14px;}
  .friend-links__inner{gap:5px 10px;}
  .friend-links__inner a{font-size:11px;line-height:1.7;}
}