:root{
  --bg:#fafafa;
  --surface:#ffffff;
  --surface-2:#f3f7f6;
  --text:#111111;
  --muted:#5f6b6a;
  --accent:#0e8f6e;
  --border:#e4eae8;
  --font-head:'PingFang SC','Microsoft YaHei','Noto Sans SC',sans-serif;
  --font-body:'PingFang SC','Microsoft YaHei','Noto Sans SC',sans-serif;
}
/* ============ Reset & Base ============ */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font-body);background:var(--bg);color:var(--text);line-height:1.75;font-size:16px;-webkit-font-smoothing:antialiased}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
h1,h2,h3,h4{font-family:var(--font-head);line-height:1.3;font-weight:700}
::selection{background:var(--accent);color:#fff}

/* ============ Layout ============ */
.container{width:min(1120px,92%);margin-inline:auto}
.section{padding:90px 0}
.section.alt{background:var(--surface-2)}
.section-head{max-width:680px;margin:0 auto 52px;text-align:center}
.section-head .eyebrow{display:inline-block;font-size:12px;letter-spacing:.22em;text-transform:uppercase;color:var(--accent);font-weight:700;margin-bottom:12px}
.section-head h2{font-size:clamp(26px,3.2vw,34px);margin-bottom:14px;letter-spacing:-.01em}
.section-head p{color:var(--muted);font-size:16px}

/* ============ Header ============ */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.9);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border);transition:box-shadow .3s}
.site-header.scrolled{box-shadow:0 4px 18px rgba(0,0,0,.06)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:70px}
.brand{display:flex;align-items:center;gap:12px;font-weight:800;font-family:var(--font-head);font-size:17px;letter-spacing:.01em}
.brand-mark{display:grid;place-items:center;width:38px;height:38px;border-radius:10px;background:var(--accent);color:#fff;font-size:17px;font-weight:800;flex:none}
.brand-mark img{width:100%;height:100%;border-radius:10px;object-fit:cover}
.nav-menu{display:flex;gap:28px}
.nav-menu a{font-size:15px;color:#444;transition:color .2s;padding:8px 0 6px}
.nav-menu a:hover{color:#000}
.nav-menu a.active{color:#000;font-weight:700;border-bottom:2px solid #000}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px}
.nav-toggle span{width:22px;height:2px;background:#111;border-radius:2px}

/* ============ Buttons ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 30px;border-radius:8px;font-size:15px;font-weight:600;border:1.5px solid transparent;cursor:pointer;transition:.22s;font-family:inherit}
.btn-primary{background:#111;color:#fff}
.btn-primary:hover{background:#000;box-shadow:0 8px 22px rgba(0,0,0,.18);transform:translateY(-1px)}
.btn-ghost{border-color:#111;color:#111;background:transparent}
.btn-ghost:hover{background:#111;color:#fff}

/* ============ Hero (reference style: light grid + left-aligned) ============ */
.hero{position:relative;padding:122px 0 132px;overflow:hidden;
  background-image:linear-gradient(rgba(17,17,17,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(17,17,17,.05) 1px,transparent 1px);
  background-size:46px 46px}
.hero-eyebrow{font-size:13px;letter-spacing:.24em;text-transform:uppercase;color:var(--accent);font-weight:700;margin-bottom:22px}
.hero-wordmark{font-size:clamp(40px,5.6vw,66px);font-weight:800;line-height:1.16;letter-spacing:-.015em;max-width:860px}
.hero-tagline{font-size:clamp(20px,2.6vw,28px);font-weight:700;color:var(--accent);margin:20px 0 14px}
.hero-sub{max-width:660px;color:var(--muted);font-size:17px;line-height:1.95}
.hero-actions{margin-top:40px;display:flex;gap:16px;flex-wrap:wrap}
.hero-hint{position:absolute;left:50%;bottom:24px;transform:translateX(-50%);color:var(--muted);font-size:24px;line-height:1;animation:hint-bounce 1.8s infinite}
@keyframes hint-bounce{0%,100%{transform:translate(-50%,0)}50%{transform:translate(-50%,8px)}}

/* ============ Page hero (sub pages) ============ */
.page-hero{padding:88px 0 62px;border-bottom:1px solid var(--border);
  background-image:linear-gradient(rgba(17,17,17,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(17,17,17,.04) 1px,transparent 1px);
  background-size:46px 46px}
.page-hero .eyebrow{font-size:12px;letter-spacing:.24em;text-transform:uppercase;color:var(--accent);font-weight:700;margin-bottom:14px}
.page-hero h1{font-size:clamp(28px,3.8vw,42px);letter-spacing:-.01em;margin-bottom:14px}
.page-hero p{color:var(--muted);max-width:620px;font-size:16px}

/* ============ Members (portals) ============ */
.members{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px}
.member-card{display:flex;flex-direction:column;gap:14px;background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:26px;transition:.25s;text-decoration:none;color:inherit;box-shadow:0 1px 2px rgba(0,0,0,.04)}
.member-card:hover{transform:translateY(-5px);border-color:var(--accent);box-shadow:0 12px 30px rgba(0,0,0,.09)}
.member-logo{width:56px;height:56px;border-radius:14px;overflow:hidden;background:#fff;display:grid;place-items:center;box-shadow:0 2px 8px rgba(0,0,0,.08)}
.member-logo img{width:100%;height:100%;object-fit:cover;display:block}
.member-logo svg{width:56px;height:56px;display:block}
.member-body strong{font-size:17px;display:block;margin-bottom:6px}
.member-desc{color:var(--muted);font-size:14px;line-height:1.6}
.member-go{margin-top:auto;font-size:14px;font-weight:600;color:var(--accent)}

/* ============ Cards ============ */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px}
.card{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:30px 26px;transition:.25s;box-shadow:0 1px 2px rgba(0,0,0,.04)}
.card:hover{transform:translateY(-5px);border-color:var(--accent);box-shadow:0 12px 30px rgba(0,0,0,.09)}
.card .icon{width:46px;height:46px;border-radius:10px;display:grid;place-items:center;background:var(--accent);color:#fff;font-size:19px;margin-bottom:16px;font-weight:800}
.card h3{font-size:18px;margin-bottom:10px}
.card p{color:var(--muted);font-size:15px}

/* ============ Features ============ */
.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:24px}
.feature{padding:6px 0}
.feature .num{font-family:var(--font-head);font-size:30px;font-weight:800;color:var(--accent);margin-bottom:10px;line-height:1}
.feature h3{font-size:18px;margin-bottom:8px}
.feature p{color:var(--muted);font-size:15px}

/* ============ Split ============ */
.split{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
.split .eyebrow{font-size:12px;letter-spacing:.22em;text-transform:uppercase;color:var(--accent);font-weight:700;margin-bottom:12px}
.split h2{font-size:clamp(24px,3vw,32px);margin-bottom:16px;letter-spacing:-.01em}
.split p{color:var(--muted);margin-bottom:14px}
.check-list{display:grid;gap:10px;margin-top:6px}
.check-list li{display:flex;gap:10px;align-items:flex-start;color:#333}
.check-list li::before{content:"✓";color:var(--accent);font-weight:700;flex:none}
.panel{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:30px;display:grid;gap:22px;box-shadow:0 1px 2px rgba(0,0,0,.04)}
.panel-item{display:flex;gap:16px;align-items:flex-start}
.panel-item .num{font-family:var(--font-head);font-size:26px;font-weight:800;color:var(--accent);line-height:1;flex:none}
.panel-item h4{font-size:16px;margin-bottom:4px}
.panel-item p{font-size:14px;color:var(--muted);margin-bottom:0}

/* ============ Values ============ */
.values{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px}
.value{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:28px 24px;text-align:center;transition:.25s}
.value:hover{transform:translateY(-4px);border-color:var(--accent)}
.value .icon{width:44px;height:44px;margin:0 auto 14px;border-radius:10px;display:grid;place-items:center;background:var(--accent);color:#fff;font-size:18px;font-weight:800}
.value h3{font-size:17px;margin-bottom:8px}
.value p{color:var(--muted);font-size:14px}

/* ============ CTA ============ */
.cta-band{background:#111;border-radius:16px;padding:56px 40px;text-align:center;color:#fff;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;width:320px;height:320px;border-radius:50%;background:var(--accent);opacity:.22;top:-160px;right:-100px}
.cta-band h2{font-size:clamp(24px,3vw,32px);margin-bottom:12px;position:relative}
.cta-band p{opacity:.85;margin-bottom:26px;position:relative}
.cta-band .btn-primary{background:#fff;color:#111}
.cta-band .btn-primary:hover{background:#f2f2f2}
.cta-band .btn-ghost{border-color:rgba(255,255,255,.75);color:#fff}
.cta-band .btn-ghost:hover{background:#fff;color:#111;border-color:#fff}

/* ============ Announcements (synced via api-proxy) ============ */
.announce-list{display:grid;gap:14px;max-width:880px;margin-inline:auto}
.announce-item{display:flex;gap:18px;align-items:flex-start;background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:20px 24px;transition:.2s}
.announce-item:hover{border-color:var(--accent);transform:translateY(-2px)}
.announce-tag{flex:none;font-size:12px;font-weight:700;color:#fff;background:var(--accent);border-radius:6px;padding:5px 11px;margin-top:2px}
.announce-body h4{font-size:16px;margin-bottom:4px}
.announce-date{font-size:13px;color:var(--muted)}
.announce-content{font-size:14px;color:var(--muted);margin-top:8px}
.announce-empty{text-align:center;color:var(--muted);font-size:14px;background:var(--surface);border:1px dashed var(--border);border-radius:12px;padding:22px}

/* ============ News / list page ============ */
.list-items{display:grid;gap:14px;max-width:880px;margin-inline:auto}
.list-item{display:flex;gap:20px;align-items:flex-start;background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:22px 24px;transition:.2s}
.list-item:hover{border-color:var(--accent);transform:translateY(-2px)}
.list-item .list-tag{flex:none;font-size:12px;font-weight:700;color:#fff;background:var(--accent);border-radius:6px;padding:5px 11px;margin-top:2px}
.list-item .list-body h4{font-size:17px;margin-bottom:4px}
.list-item .list-body p{font-size:14px;color:var(--muted);margin-top:6px}
.list-item .list-date{font-size:13px;color:var(--muted);flex:none;margin-top:2px}

/* ============ Download cards ============ */
.download-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:18px}
.download-card{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:28px 20px;text-align:center;transition:.25s}
.download-card:hover{transform:translateY(-5px);border-color:var(--accent);box-shadow:0 12px 28px rgba(0,0,0,.09)}
.download-card .icon{width:52px;height:52px;margin:0 auto 14px;border-radius:12px;display:grid;place-items:center;background:var(--accent);color:#fff;font-size:22px;font-weight:800}
.download-card h3{font-size:16px;margin-bottom:6px}
.download-card .meta{font-size:13px;color:var(--muted);margin-bottom:16px;min-height:20px}
.download-card .btn{width:100%;padding:11px 0;font-size:14px}

/* ============ Footer ============ */
.site-footer{border-top:1px solid var(--border);background:var(--surface);margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding:56px 0}
.footer-grid h4{font-size:15px;margin-bottom:14px}
.footer-grid p,.footer-grid li{color:var(--muted);font-size:14px;margin-bottom:8px}
.footer-grid a:hover{color:#000}
.footer-bottom{border-top:1px solid var(--border);padding:18px 0;color:var(--muted);font-size:13px;text-align:center}

/* ============ Contact ============ */
.contact-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:start}
.form-card{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:34px;box-shadow:0 1px 2px rgba(0,0,0,.04)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-group{margin-bottom:18px}
.form-group label{display:block;font-size:14px;font-weight:600;margin-bottom:8px}
.form-group input,.form-group textarea{width:100%;padding:12px 14px;border-radius:8px;border:1px solid var(--border);background:var(--bg);color:var(--text);font-size:15px;font-family:inherit;transition:.2s}
.form-group input:focus,.form-group textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb, var(--accent) 16%, transparent)}
.form-note{font-size:13px;color:var(--muted);margin-top:12px}
.form-msg{display:none;margin-top:16px;padding:12px 16px;border-radius:8px;background:color-mix(in srgb, var(--accent) 12%, transparent);border:1px solid color-mix(in srgb, var(--accent) 38%, transparent);color:var(--text);font-size:14px}
.contact-meta{display:grid;gap:16px}
.contact-item{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:20px 22px}
.contact-item h4{font-size:13px;color:var(--muted);font-weight:600;letter-spacing:.08em;margin-bottom:6px}
.contact-item p{font-size:16px}

/* ============ Reveal ============ */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion: reduce){.reveal{opacity:1;transform:none;transition:none}}

/* ============ Responsive ============ */
@media (max-width:900px){
  .hero{padding:80px 0 96px}
  .hero-split,.split,.contact-grid,.footer-grid{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .section{padding:64px 0}
  .nav-menu{position:fixed;inset:70px 0 auto 0;flex-direction:column;background:#fff;padding:14px 6% 20px;gap:0;border-bottom:1px solid var(--border);transform:translateY(-130%);transition:transform .3s;z-index:99;box-shadow:0 20px 40px rgba(0,0,0,.12)}
  .nav-menu.open{transform:none}
  .nav-menu a{padding:12px 0;font-size:17px;border-bottom:1px solid var(--border)}
  .nav-menu a.active{border-bottom:1px solid var(--border);border-left:3px solid #000;padding-left:8px}
  .nav-toggle{display:flex}
  .list-item{flex-direction:column;gap:8px}
}
@media (max-width:520px){
  .cta-band{padding:44px 24px}
}