:root{
  --brand:#1f5c8a; --brand-dark:#16456a; --accent:#428bca;
  --ink:#2f3437; --muted:#6b7785; --line:#e3e8ee; --bg:#f5f7fa; --card:#fff;
  --ok:#2e9e5b; --warn:#c9851f; --radius:12px; --shadow:0 2px 10px rgba(20,60,100,.08);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:"Segoe UI",Roboto,Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.55}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}

/* Header */
.hdr{background:linear-gradient(135deg,var(--brand) 0%,var(--brand-dark) 100%);color:#fff}
.hdr-in{max-width:1080px;margin:0 auto;padding:14px 20px;display:flex;align-items:center;gap:16px}
.hdr .logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;color:#fff}
.hdr .logo .logo-txt{display:flex;align-items:center;gap:10px}
.hdr .logo .dot{width:30px;height:30px;border-radius:8px;background:#fff;color:var(--brand);display:grid;place-items:center;font-weight:800}
.hdr .logo .logo-img{height:38px;width:auto;display:block}
.hdr .logo.has-img .logo-txt{display:none}
.hdr nav{margin-left:auto;display:flex;gap:18px;align-items:center;font-size:14px}
.hdr nav a{color:#dceaf6}
.hdr nav a:hover{color:#fff}
.lang{display:flex;gap:6px}
.lang button{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.25);color:#fff;border-radius:6px;padding:3px 9px;cursor:pointer;font-size:12px}
.lang button.on{background:#fff;color:var(--brand);font-weight:700}

/* Hero + search */
.hero{background:linear-gradient(135deg,var(--brand-dark),var(--brand));color:#fff;padding:30px 20px 54px;text-align:center}
.hero h1{margin:0 0 6px;font-size:30px}
.hero p{margin:0 0 22px;color:#cfe2f2;font-size:15px}
.searchwrap{max-width:680px;margin:0 auto;position:relative}
.searchbox{display:flex;align-items:center;background:#fff;border-radius:30px;box-shadow:var(--shadow);padding:6px 8px 6px 18px}
.searchbox svg{flex:0 0 auto;color:var(--muted)}
.searchbox input{flex:1;border:0;outline:0;font-size:16px;padding:12px 12px;color:var(--ink);background:transparent}
.searchbox .go{background:var(--accent);color:#fff;border:0;border-radius:24px;padding:11px 20px;font-size:15px;cursor:pointer}
.searchbox .aihelp{display:flex;align-items:center;gap:6px;background:#eef5fb;color:var(--brand);border:1px solid #cfe2f3;border-radius:24px;padding:9px 14px;font-size:14px;font-weight:600;cursor:pointer;margin-right:8px;white-space:nowrap}
.searchbox .aihelp:hover{background:#dcebf7}
@media(max-width:560px){.searchbox .aihelp span,.searchbox .aihelp{font-size:0;gap:0;padding:9px 11px}.searchbox .aihelp svg{font-size:initial}}
.results{position:absolute;left:0;right:0;top:64px;background:#fff;border-radius:14px;box-shadow:0 12px 30px rgba(20,60,100,.18);text-align:left;overflow:hidden;display:none;z-index:30}
.results.show{display:block}
.results .r{display:block;padding:13px 18px;border-bottom:1px solid var(--line);color:var(--ink)}
.results .r:last-child{border-bottom:0}
.results .r:hover{background:#f3f8fd;text-decoration:none}
.results .r .t{font-weight:600;color:var(--brand)}
.results .r .c{font-size:12px;color:var(--muted);margin-top:2px}
.results .r mark{background:#ffe08a;color:inherit;padding:0 2px;border-radius:3px}
.results .none{padding:16px 18px;color:var(--muted)}

/* Layout */
.wrap{max-width:1080px;margin:-30px auto 0;padding:0 20px 60px}
.section-title{font-size:18px;margin:30px 0 14px;color:var(--brand-dark)}

/* Category cards */
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow);transition:transform .12s,box-shadow .12s;cursor:pointer}
.card:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(20,60,100,.14)}
.card .ic{width:38px;height:38px;border-radius:9px;background:#eaf3fb;color:var(--brand);display:grid;place-items:center;margin-bottom:10px;font-size:18px}
.card h3{margin:0 0 4px;font-size:15px}
.card p{margin:0;font-size:13px;color:var(--muted)}
.card .count{font-size:12px;color:var(--accent);margin-top:8px}

/* FAQ accordion */
.faq{display:grid;gap:10px}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:10px;box-shadow:var(--shadow);overflow:hidden}
.faq-q{width:100%;text-align:left;background:none;border:0;padding:14px 16px;font-size:15px;font-weight:600;color:var(--ink);cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:10px}
.faq-q:hover{color:var(--brand)}
.faq-ic{color:var(--accent);font-size:20px;line-height:1;flex:0 0 auto;transition:transform .2s}
.faq-q[aria-expanded="true"] .faq-ic{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease}
.faq-q[aria-expanded="true"] + .faq-a{max-height:420px}
.faq-a-in{padding:0 16px 14px;color:var(--muted);font-size:14px;line-height:1.55}
.faq-a-in b{color:var(--ink)}
.faq-link{margin-top:8px}

/* Two-column lower */
.grid2{display:grid;grid-template-columns:2fr 1fr;gap:20px;margin-top:6px}
@media(max-width:780px){.grid2{grid-template-columns:1fr}.hdr nav{display:none}}
.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px}
.alist a{display:block;padding:11px 4px;border-bottom:1px solid var(--line);color:var(--ink)}
.alist a:last-child{border-bottom:0}
.alist a:hover{color:var(--brand)}
.alist .ch{font-size:11px;color:var(--muted)}
.badge{display:inline-block;font-size:11px;border-radius:10px;padding:1px 8px;margin-left:6px}
.badge.ok{background:#e7f6ee;color:var(--ok)}
.badge.draft{background:#fbf2e0;color:var(--warn)}

/* PDF box */
.pdfbox .dl{display:flex;align-items:center;gap:10px;padding:11px 12px;border:1px solid var(--line);border-radius:9px;margin-bottom:10px;color:var(--ink)}
.pdfbox .dl:hover{border-color:var(--accent);text-decoration:none;background:#f7fbff}
.pdfbox .dl .pi{width:30px;height:30px;border-radius:7px;background:#fde8e8;color:#c0392b;display:grid;place-items:center;font-weight:700;font-size:12px}
.pdfbox small{color:var(--muted)}

/* AI assistant */
#aiBtn{position:fixed;right:22px;bottom:22px;width:60px;height:60px;border-radius:50%;background:var(--accent);color:#fff;border:0;box-shadow:0 6px 18px rgba(20,60,100,.3);cursor:pointer;display:grid;place-items:center;z-index:50}
#aiBtn:hover{background:var(--brand)}
#aiPanel{position:fixed;right:22px;bottom:92px;width:380px;max-width:calc(100vw - 32px);height:540px;max-height:calc(100vh - 130px);background:#fff;border-radius:16px;box-shadow:0 16px 44px rgba(20,60,100,.28);display:none;flex-direction:column;overflow:hidden;z-index:50}
#aiPanel.show{display:flex}
.ai-h{background:linear-gradient(135deg,var(--brand),var(--brand-dark));color:#fff;padding:13px 16px;display:flex;align-items:center;gap:9px}
.ai-h .av{width:30px;height:30px;border-radius:8px;background:rgba(255,255,255,.18);display:grid;place-items:center}
.ai-h b{font-size:15px}
.ai-h .sub{font-size:11px;color:#cfe2f2}
.ai-h .x{margin-left:auto;background:transparent;border:0;color:#fff;font-size:20px;cursor:pointer}
.ai-msgs{flex:1;overflow-y:auto;padding:14px;background:#f7f9fc}
.msg{margin-bottom:12px;display:flex}
.msg .b{max-width:85%;padding:10px 13px;border-radius:13px;font-size:14px}
.msg.u{justify-content:flex-end}
.msg.u .b{background:var(--accent);color:#fff;border-bottom-right-radius:4px}
.msg.a .b{background:#fff;border:1px solid var(--line);border-bottom-left-radius:4px}
.msg.a .b a{display:block;margin-top:6px;font-size:13px}
.msg.a .b .src{margin-top:8px;border-top:1px dashed var(--line);padding-top:6px}
.msg.a .b .src .s{display:block;font-size:13px;padding:4px 0}
.ai-in{display:flex;gap:8px;padding:11px;border-top:1px solid var(--line);background:#fff}
.ai-in input{flex:1;border:1px solid var(--line);border-radius:22px;padding:10px 14px;outline:0;font-size:14px}
.ai-in button{background:var(--accent);color:#fff;border:0;border-radius:22px;width:42px;cursor:pointer}
.ai-in button:hover{background:var(--brand)}
.chips{display:flex;flex-wrap:wrap;gap:6px;padding:0 14px 10px;background:#f7f9fc}
.chips button{background:#eaf3fb;border:1px solid #d4e6f5;color:var(--brand);border-radius:14px;padding:4px 10px;font-size:12px;cursor:pointer}
.chips button:hover{background:#dcebf7}
.note{font-size:11px;color:var(--muted);text-align:center;padding:6px 14px;background:#f7f9fc}

footer{border-top:1px solid var(--line);background:#fff;color:var(--muted);font-size:13px}
footer .f{max-width:1080px;margin:0 auto;padding:18px 20px;display:flex;flex-wrap:wrap;gap:10px;align-items:center}
footer .f .sp{margin-left:auto;display:flex;gap:18px}
footer .f .sp a{color:var(--brand)}
footer .f .sp a:hover{color:var(--brand-dark)}