*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Microsoft Sans Serif','Microsoft YaHei',sans-serif;background:#f2f6f9;color:#1e2a32;line-height:1.7;overflow-x:hidden}
a{text-decoration:none;color:inherit}
img{display:block;max-width:100%;height:auto;border-radius:6px}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.site-shell{overflow:hidden}
:root{
    --brand:#0b3d5c;
    --brand-2:#12557a;
    --accent:#2d9cdb;
    --accent-2:#6bb8e0;
    --gold:#e0b25b;
    --bg-soft:#f2f6f9;
    --surface:#ffffff;
    --ink:#1e2a32;
    --ink-2:#4a5d6a;
    --line:#dbe4ea;
    --shadow:0 10px 36px rgba(15,65,95,.08);
}
/* topbar */
.topbar{background:linear-gradient(90deg,#072c40,#0b3d5c 60%,#0f4a6d);color:rgba(255,255,255,.82);font-size:.85rem;padding:7px 0;letter-spacing:.6px}
.topbar__inner{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
.topbar span:first-child::before{content:'📍';color:#e0b25b;margin-right:5px}
.topbar span:last-child::before{content:'⚡';color:#e0b25b;margin-right:5px}
/* header */
.header{background:var(--surface);box-shadow:0 3px 18px rgba(15,65,95,.05);position:sticky;top:0;z-index:100}
.header__inner{display:flex;align-items:center;justify-content:space-between;height:66px}
.brand{display:flex;align-items:center;gap:10px}
.brand__mark{width:9px;height:34px;background:linear-gradient(180deg,var(--gold),var(--accent));border-radius:3px;display:inline-block}
.brand__text{display:flex;flex-direction:column;line-height:1.2}
.brand__text strong{font-size:1.22rem;color:var(--brand);font-weight:700;letter-spacing:.5px}
.brand__text span{font-size:.78rem;color:var(--ink-2);letter-spacing:1px}
.nav{display:flex;gap:22px;font-size:.95rem;font-weight:500}
.nav a{color:var(--ink-2);padding:6px 2px;border-bottom:2px solid transparent;transition:.3s}
.nav a:hover{color:var(--accent);border-color:var(--accent)}
/* hero */
.hero{background:linear-gradient(140deg,#0a3046,#0d4060 55%,#11527a);min-height:540px;display:flex;align-items:center;position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;top:-40%;right:-20%;width:680px;height:680px;background:radial-gradient(circle,rgba(45,156,219,.14) 0%,transparent 70%);border-radius:50%}
.hero::after{content:'';position:absolute;bottom:-30%;left:-10%;width:420px;height:420px;background:radial-gradient(circle,rgba(224,178,91,.12) 0%,transparent 70%);border-radius:50%}
.hero-grid{display:grid;grid-template-columns:1.4fr .9fr;gap:50px;align-items:center;position:relative;z-index:2;padding:64px 0}
.hero-copy .eyebrow{display:inline-block;background:rgba(224,178,91,.14);border:1px solid rgba(224,178,91,.4);color:#f5d89a;padding:5px 16px;border-radius:30px;font-size:.8rem;letter-spacing:2px;margin-bottom:16px}
.hero-copy h1{font-size:2.9rem;font-weight:800;line-height:1.18;color:#fff;letter-spacing:1px;margin-bottom:18px}
.hero-copy h1 .accent{color:var(--accent-2)}
.hero-copy p{font-size:1.02rem;color:rgba(255,255,255,.78);max-width:640px;line-height:1.8;margin-bottom:22px}
.chip-row{display:flex;flex-wrap:wrap;gap:10px}
.chip-row span{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12);padding:5px 14px;border-radius:20px;font-size:.82rem;color:rgba(255,255,255,.75);letter-spacing:.4px}
.chip-row span:first-child{background:rgba(224,178,91,.18);border-color:rgba(224,178,91,.4);color:#f5d89a}
.keyword-row{margin-top:18px}
.hero-panel{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);border-radius:20px;padding:28px;backdrop-filter:blur(8px)}
.metric-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:22px}
.metric-grid div{text-align:center;padding:12px 6px;border-radius:10px;background:rgba(255,255,255,.05)}
.metric-grid strong{font-size:1.7rem;color:#f5d89a;display:block;line-height:1.2}
.metric-grid span{font-size:.78rem;color:rgba(255,255,255,.65)}
.hero-contact{border-top:1px solid rgba(255,255,255,.12);padding-top:18px;margin-top:10px}
.hero-contact strong{color:#fff;font-size:1.02rem}
.hero-contact a{color:var(--accent-2);font-size:1.45rem;font-weight:700;margin-top:6px;display:inline-block}
.hero-contact p{color:rgba(255,255,255,.62);font-size:.85rem;line-height:1.6;margin-top:8px}
/* section */
.section{background:var(--bg-soft);padding:70px 0}
.section:nth-child(even){background:var(--surface)}
.section-head{text-align:center;margin-bottom:38px}
.section-head h2{font-size:2.1rem;color:var(--brand);font-weight:800;letter-spacing:.5px}
.section-head span{display:inline-block;margin-top:6px;font-size:.85rem;color:var(--ink-2);letter-spacing:2px;text-transform:uppercase;border-bottom:1px solid var(--line);padding-bottom:4px}
.surface-card{background:var(--surface);border-radius:20px;box-shadow:var(--shadow);padding:38px;border:1px solid #edf2f6}
.about-grid{display:grid;grid-template-columns:1.2fr .9fr;gap:40px;align-items:center}
.about-copy p{font-size:.98rem;color:var(--ink-2);line-height:1.85;margin-bottom:14px}
.about-copy p strong{color:var(--brand)}
.about-figure{margin:0}
.about-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:14px;box-shadow:var(--shadow)}
.about-figure figcaption{font-size:.85rem;color:var(--ink-2);text-align:center;margin-top:10px}
/* strengths */
.strength-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.strength-grid article{background:var(--surface);border-radius:14px;padding:24px 20px;border:1px solid var(--line);transition:.3s;box-shadow:0 4px 14px rgba(0,0,0,.02)}
.strength-grid article:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:var(--accent)}
.strength-grid h3{color:var(--brand);font-size:1.12rem;margin-bottom:8px}
.strength-grid p{font-size:.88rem;color:var(--ink-2);line-height:1.7}
.strength-grid .icon{font-size:1.6rem;margin-bottom:6px;display:block}
/* gallery */
.gallery-stack{display:flex;flex-direction:column;gap:38px}
.gallery-group .group-head{background:linear-gradient(90deg,var(--brand),var(--brand-2));color:#fff;display:inline-block;padding:8px 20px;border-radius:24px;font-size:.92rem;font-weight:600;letter-spacing:.6px;margin-bottom:20px;box-shadow:0 4px 12px rgba(11,61,92,.18)}
.group-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.group-grid figure{margin:0;background:var(--surface);border-radius:12px;overflow:hidden;box-shadow:0 4px 16px rgba(0,0,0,.04);border:1px solid var(--line);transition:.3s}
.group-grid figure:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.group-grid img{width:100%;aspect-ratio:4/3;object-fit:cover}
.group-grid p{padding:10px 12px 14px;font-size:.88rem;color:var(--ink-2);line-height:1.5}
/* faq */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.faq-grid details{background:var(--surface);border-radius:12px;padding:18px 22px;border-left:4px solid var(--accent);box-shadow:0 3px 12px rgba(0,0,0,.03)}
.faq-grid summary{font-weight:600;color:var(--brand);cursor:pointer;margin-bottom:6px;font-size:1.02rem;list-style:none}
.faq-grid summary::before{content:'Q ';color:var(--gold);font-weight:800}
.faq-grid p{font-size:.9rem;color:var(--ink-2);padding-top:6px;line-height:1.7}
/* contact */
.cta-panel{background:linear-gradient(135deg,#0a3046,#0d4060 70%,#11527a);border-radius:24px;padding:46px;display:grid;grid-template-columns:1.2fr .9fr;gap:40px;align-items:center;color:#fff;position:relative;overflow:hidden}
.cta-panel::before{content:'';position:absolute;right:-20%;top:-40%;width:380px;height:380px;background:radial-gradient(circle,rgba(224,178,91,.15),transparent 70%);border-radius:50%}
.cta-copy .eyebrow{color:var(--gold);letter-spacing:2px;font-size:.85rem}
.cta-copy h2{font-size:1.9rem;font-weight:700;margin:8px 0 10px}
.cta-copy p{color:rgba(255,255,255,.7);line-height:1.7;margin-bottom:14px}
.cta-copy .contact-list{list-style:none;display:flex;gap:24px;flex-wrap:wrap;font-size:.9rem}
.cta-contact{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:16px;padding:26px;text-align:center;backdrop-filter:blur(8px)}
.cta-contact strong{display:block;color:#fff;font-size:1.04rem}
.cta-contact a{color:var(--gold);font-size:1.9rem;font-weight:800;display:inline-block;margin-top:10px}
.cta-contact__meta{display:flex;gap:16px;justify-content:center;margin-top:18px;flex-wrap:wrap}
.cta-contact__meta div{background:rgba(0,0,0,.15);padding:10px 14px;border-radius:8px;font-size:.8rem}
.cta-contact__meta span{display:block;color:rgba(255,255,255,.55)}
.cta-contact__meta strong{color:#fff;font-size:.9rem}
/* footer */
.footer{background:#072c40;color:rgba(255,255,255,.7);padding:50px 0 40px;margin-top:0}
.footer__inner{text-align:center;display:flex;flex-direction:column;gap:18px}
.footer-copy p{line-height:1.9;font-size:.9rem;max-width:720px;margin:0 auto}
.footer-copy p:first-child{color:rgba(255,255,255,.85)}
.friend-links-row{width:100%;margin-top:22px;padding-top:22px;border-top:1px solid rgba(255,255,255,.08)}
.friend-links__inner{font-size:.8rem;color:rgba(255,255,255,.45);display:flex;flex-wrap:wrap;justify-content:center;gap:10px 18px;line-height:1.8}
.friend-links a{padding:3px 10px;border-radius:16px;background:rgba(255,255,255,.04)}
.friend-links a:hover{background:rgba(255,255,255,.1);color:#fff}
/* timestamp */
.timestamp-wrap{background:#f2f6f9;padding:14px 20px;text-align:center;font-size:.82rem;color:var(--ink-2);letter-spacing:.6px;border-top:1px solid var(--line)}
/* mobile */
@media(max-width:960px){
  .nav{display:none}
  .hero-grid,.about-grid,.cta-panel{grid-template-columns:1fr}
  .strength-grid,.group-grid{grid-template-columns:1fr 1fr}
  .hero-copy h1{font-size:2rem}
  .header__inner{justify-content:space-between}
  .nav{position:absolute;top:66px;left:0;right:0;background:var(--surface);flex-direction:column;padding:18px 30px;box-shadow:0 20px 40px rgba(0,0,0,.08);display:flex;transform:translateY(-150%);transition:.4s}
  .nav.open{transform:translateY(0)}
}
.menu-toggle{display:none;color:var(--brand);font-size:1.6rem;cursor:pointer}
@media(max-width:960px){
  .menu-toggle{display:block}
}


.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;}
}