:root{--bg:#f6f7f9;--ink:#1a2233;--navy:#0d1b2a;--gold:#f0b90b;--mt:#8a93a8;--dim:#a0a7b4;--line:#e8eaef;--blue:#0052ff}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;background:var(--bg);color:var(--ink);line-height:1.6;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit}
img{max-width:100%;height:auto;display:block}
.site{max-width:100%}
.wrap{max-width:880px;margin:0 auto;padding:0 24px}
.bar{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:100}
.bar .tb{display:flex;align-items:center;height:58px;gap:20px}
.bar .lg{display:flex;align-items:center;gap:9px;font-size:16px;font-weight:800}
.bar .lg .ic{width:26px;height:26px;border-radius:6px;background:linear-gradient(135deg,var(--gold),#f8d33a);display:flex;align-items:center;justify-content:center;color:var(--ink);font-weight:900;font-size:13px}
.bar .nv{display:flex;gap:22px;font-size:14px;color:#6a7384}
.bar .nv a:hover{color:var(--navy)}
.bar .rt{margin-left:auto;display:flex;gap:12px;align-items:center}
.bar .rt a{font-size:14px;color:#6a7384}
.bar .rt .reg{background:var(--navy);color:#fff;padding:8px 22px;border-radius:7px;font-weight:600}
.search{padding:52px 0 36px;text-align:center}
.search .t{font-size:12px;color:var(--gold);font-weight:700;letter-spacing:2px;margin-bottom:10px}
.search h1{font-size:clamp(1.7rem,3.4vw,2.4rem);font-weight:800;letter-spacing:-.5px;color:var(--navy)}
.search .sbox{max-width:560px;margin:24px auto 0;display:flex;align-items:center;background:#fff;border:1px solid #dde0e7;border-radius:10px;padding:13px 18px;box-shadow:0 8px 28px rgba(13,27,42,.06)}
.search .sbox input{flex:1;border:none;outline:none;font-size:15px;color:var(--ink);background:transparent}
.search .sbox span{color:var(--dim)}
.hot{margin-top:18px;display:flex;gap:10px;justify-content:center;flex-wrap:wrap}
.hot .lb{font-size:12px;color:var(--dim)}
.hot a{font-size:12px;color:#6a7384;border:1px solid #e0e3ea;border-radius:999px;padding:5px 14px;background:#fff}
.cats{display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px;padding-bottom:32px}
.cat{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px 16px;display:flex;gap:14px;align-items:center;transition:box-shadow .2s}
.cat:hover{box-shadow:0 10px 28px rgba(13,27,42,.08)}
.cat .ic{width:42px;height:42px;border-radius:11px;background:#f0f3f8;display:flex;align-items:center;justify-content:center;font-size:20px;flex:none}
.cat b{font-size:14px;display:block;margin-bottom:3px}
.cat span{font-size:11px;color:var(--mt)}
.cat .arr{margin-left:auto;color:#c0c8d6}
.steps{display:grid;grid-template-columns:1fr 1fr 1fr;gap:14px;padding-bottom:32px}
.step{background:#fff;border:1px solid var(--line);border-radius:12px;padding:22px 18px;text-align:center}
.step .no{width:34px;height:34px;border-radius:50%;background:linear-gradient(135deg,var(--gold),#f8d33a);color:var(--ink);display:flex;align-items:center;justify-content:center;font-weight:800;margin:0 auto 12px}
.step .ic{font-size:24px;margin-bottom:10px}
.step b{font-size:15px;display:block;margin-bottom:6px}
.step p{font-size:12px;color:var(--mt);line-height:1.7}
.step .go{display:inline-block;margin-top:10px;font-size:13px;color:var(--gold);font-weight:700}
.faq-sec{background:#fff;border:1px solid var(--line);border-radius:14px;padding:28px;margin-bottom:32px}
.faq-sec .fh{font-size:18px;font-weight:800;color:var(--navy);margin-bottom:20px;display:flex;align-items:center;gap:8px}
.faq-sec .fh .dot{width:10px;height:10px;border-radius:50%;background:var(--gold)}
.faq .item{border-bottom:1px solid #f0f2f5}
.faq .item:last-child{border-bottom:none}
.faq .q{display:flex;justify-content:space-between;align-items:center;padding:15px 0;font-size:14px;font-weight:600;cursor:pointer}
.faq .q span{color:#c0c8d6;font-size:13px}
.faq .a{display:none;padding:0 0 14px;font-size:13px;color:#6a7384;line-height:1.8}
.faq .item.open .a{display:block}
.faq .item.open .q span{transform:rotate(180deg);color:var(--gold)}
.faq .a a{color:var(--blue);font-weight:600}
.tags{padding-bottom:32px}
.tags .th{font-size:15px;font-weight:800;color:var(--navy);margin-bottom:12px;display:flex;align-items:center;gap:8px}
.tags .th .dot{width:9px;height:9px;border-radius:50%;background:var(--blue)}
.tags .group{display:flex;gap:8px;flex-wrap:wrap}
.tags .group a{font-size:12px;color:#6a7384;border:1px solid #e0e3ea;border-radius:8px;padding:7px 14px;background:#fff}
.support{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px 26px;display:flex;align-items:center;gap:18px;margin-bottom:32px}
.support .ic{width:44px;height:44px;border-radius:11px;background:#f0f3f8;display:flex;align-items:center;justify-content:center;font-size:22px;flex:none}
.support b{font-size:15px;display:block}
.support span{font-size:12px;color:var(--mt)}
.support .rt{margin-left:auto;display:flex;gap:10px}
.support .rt a{font-size:13px;padding:9px 20px;border-radius:7px}
.support .rt .chat{background:var(--navy);color:#fff;font-weight:600}
.support .rt .mail{border:1px solid #e0e3ea;color:#6a7384}
.cta{background:linear-gradient(135deg,var(--navy),#16283f);border-radius:14px;padding:32px 28px;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;color:#fff;margin-bottom:36px}
.cta .t{font-size:19px;font-weight:800}
.cta .t span{color:var(--gold)}
.cta .d{font-size:12px;color:#8a9bb5;margin-top:4px}
.cta .b{background:var(--gold);color:var(--navy);padding:11px 30px;border-radius:8px;font-weight:700}
.ft{border-top:1px solid var(--line);padding:30px 0 34px}
.ft .in{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;font-size:12px;color:var(--dim)}
.ft a{color:#6a7384;margin-right:16px}
.ft .mail{color:var(--gold)}
.artp{max-width:820px;margin:0 auto;padding:36px 0 44px}
.art-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:32px 34px}
.art-b{display:inline-block;font-size:13px;color:var(--blue);font-weight:600;margin-bottom:16px}
.art-h1{font-size:clamp(1.4rem,2.5vw,1.8rem);font-weight:800;margin-bottom:12px;line-height:1.4;letter-spacing:-.5px}
.art-meta{font-size:12px;color:var(--mt);margin-bottom:20px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.ab{font-size:15px;color:#3a465a;line-height:2}
.ab h2{font-size:18px;font-weight:700;margin:28px 0 14px;padding-left:14px;border-left:4px solid var(--gold);color:var(--navy)}
.ab p{margin-bottom:18px;text-align:justify}
.ab img{margin:16px auto;display:block;border-radius:10px;border:1px solid var(--line)}
.art-c{text-align:center;padding:22px 0 4px;border-top:1px solid var(--line);margin-top:30px}
.art-c a{display:inline-block;background:linear-gradient(135deg,var(--gold),#f8d33a);color:var(--navy);padding:12px 40px;border-radius:999px;font-weight:700;font-size:14px}
.ls{max-width:820px;margin:0 auto;padding:36px 0 44px}
.ls-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:30px 32px}
.ls-h1{font-size:clamp(1.2rem,2.2vw,1.5rem);font-weight:800;margin-bottom:20px}
.ls-list{display:flex;flex-direction:column}
.ls-item{display:flex;justify-content:space-between;align-items:center;padding:15px 4px;border-bottom:1px solid #f0f2f5;font-size:14px}
.ls-item:hover{color:var(--blue)}
.ls-item .ls-date{font-size:11px;color:var(--dim)}
.pg{display:flex;justify-content:center;gap:10px;padding:22px 0 0}
.pg a,.pg s{padding:8px 16px;border:1px solid var(--line);border-radius:8px;font-size:12px;font-weight:600;color:var(--mt)}
.pg s{background:var(--gold);color:var(--navy);border:none}
@media(max-width:900px){.cats{grid-template-columns:1fr 1fr}.ft .in{flex-direction:column}}
@media(max-width:640px){.cats{grid-template-columns:1fr}.steps{grid-template-columns:1fr}.bar .nv{display:flex;overflow-x:auto;white-space:nowrap;gap:14px;font-size:13px;.bar .nv a{flex-shrink:0;padding:6px 4px}.in{padding:0 16px}}
/* L1 问答图标卡 */
.qa-card{background:#fff;border:1px solid #e8eaef;border-radius:12px;padding:14px 0}
.qa-item{display:flex;align-items:center;gap:14px;padding:14px 20px;border-bottom:1px solid #f0f2f5}
.qa-item:last-child{border-bottom:none}
.qa-item:hover{background:#f8fafc}
.qa-item .qi{width:38px;height:38px;border-radius:10px;background:#f0f3f8;display:flex;align-items:center;justify-content:center;font-size:18px;flex:none}
.qa-item .qt{flex:1;font-size:14px;color:#1a2233}
.qa-item:hover .qt{color:#0052ff}
.qa-item .qd{font-size:11px;color:#a0a7b4;flex:none}
/* L2 左目录+右正文 */
.qa-read{display:grid;grid-template-columns:220px 1fr;gap:24px;align-items:start;max-width:960px;margin:0 auto;padding:32px 24px 44px}
.qa-toc{background:#fff;border:1px solid #e8eaef;border-radius:12px;padding:18px;position:sticky;top:80px}
.qa-toc .tt{font-size:13px;font-weight:700;color:#0d1b2a;margin-bottom:12px}
.qa-toc a{display:block;font-size:12px;color:#8a93a8;padding:7px 0;border-bottom:1px solid #f4f5f8}
.qa-toc a:last-child{border-bottom:none}
.qa-toc a:hover{color:#0052ff}
.qa-main{background:#fff;border:1px solid #e8eaef;border-radius:14px;padding:34px 36px;min-width:0}
.qa-main .ab{font-size:15px;color:#3a465a;line-height:2}
.qa-main .ab h2{font-size:18px;font-weight:700;margin:28px 0 14px;color:#0d1b2a;padding-left:14px;border-left:4px solid #f0b90b}
.qa-main .ab p{margin-bottom:18px;text-align:justify}
.qa-main .ab img{margin:16px auto;display:block;border-radius:10px;border:1px solid #e8eaef}
.qa-main .cb{text-align:center;padding:24px 0 4px;border-top:1px solid #e8eaef;margin-top:32px}
.qa-main .cb a{display:inline-block;background:linear-gradient(135deg,#f0b90b,#f8d33a);color:#0d1b2a;padding:12px 40px;border-radius:999px;font-weight:700;font-size:14px}
.qa-back{display:inline-block;font-size:13px;color:#0052ff;font-weight:600;margin-bottom:14px}
@media(max-width:900px){.qa-read{grid-template-columns:1fr}.qa-toc{position:static}}

.qa-card{display:grid;grid-template-columns:1fr 1fr;gap:12px;padding:0}
.qa-item{display:flex;gap:14px;align-items:flex-start;padding:18px 16px;border:1px solid #e8eaef;border-radius:12px;background:#fff}
.qa-item:hover{border-color:#f0b90b;box-shadow:0 8px 24px rgba(13,27,42,.06)}
.qa-item .qi{width:40px;height:40px;border-radius:10px;background:#f0f3f8;display:flex;align-items:center;justify-content:center;font-size:19px;flex:none}
.qa-item .qbd{flex:1;min-width:0}
.qa-item .qt{font-size:14px;font-weight:700;color:#1a2233;display:block;margin-bottom:6px;line-height:1.5}
.qa-item:hover .qt{color:#0052ff}
.qa-item .qx{font-size:12px;color:#8a93a8;line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.qa-item .qd{display:block;font-size:11px;color:#a0a7b4;margin-top:8px}
@media(max-width:760px){.qa-card{grid-template-columns:1fr}}

.bar .mbtn{display:none;background:none;border:none;font-size:22px;color:#1a2233;cursor:pointer;padding:4px 6px}
.mnav{display:none;background:#fff;border-bottom:1px solid #e8eaef;padding:8px 16px}
.mnav a{display:block;font-size:14px;color:#1a2233;padding:12px 0;border-bottom:1px solid #f0f2f5}
.mnav a:last-child{border-bottom:none}
.mnav.show{display:block}
@media(max-width:640px){.bar .nv{display:none}.bar .mbtn{display:block;margin-left:auto}.bar .rt{display:none}}