:root{color-scheme:light;--ink:#1e242b;--muted:#627183;--blue:#315f8b;--line:#e3eaf1}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#fbfcfe;color:var(--ink);font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}
.catalog-topbar{height:70px;padding:0 clamp(20px,4vw,56px);display:flex;align-items:center;justify-content:space-between;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 3px 16px rgba(15,42,73,.055)}
.catalog-brand{display:flex;align-items:center;gap:13px;font-size:13px;font-weight:700;letter-spacing:.06em;color:#263443}.catalog-mark{font:30px/1 Georgia,serif;letter-spacing:-.08em;color:#0f2a49}.catalog-mark span{color:#c02c31}.catalog-private{font-size:11px;color:#738294}
.catalog-main{max-width:1120px;margin:auto;padding:42px clamp(20px,4vw,46px) 80px}.catalog-intro{margin-bottom:27px}.catalog-kicker{font:700 10px Arial,sans-serif;letter-spacing:.19em;color:#6789a7}.catalog-intro h1{margin:10px 0 8px;font-size:29px;color:#1d3044;line-height:1.35}.catalog-intro p{margin:0;color:var(--muted);font-size:13px;line-height:1.7}
.catalog-tabs{display:flex;gap:26px;padding:0 0 14px;border-bottom:1px solid var(--line)}.catalog-tabs a{font-size:13px;font-weight:700;color:#315f8b}.catalog-tabs a:hover{text-decoration:underline}.catalog-tabs a:focus-visible,.catalog-card:focus-visible,.catalog-brand:focus-visible{outline:2px solid #638bb5;outline-offset:3px}
.catalog-section{scroll-margin-top:30px;margin-top:32px}.catalog-section-head{display:flex;align-items:baseline;gap:12px;margin:0 0 15px}.catalog-section h2{margin:0;font-size:19px;color:#243b53}.catalog-section-head span{font-size:11px;color:#8190a0}.catalog-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.catalog-card{display:flex;flex-direction:column;overflow:hidden;border:1px solid #dce7f0;border-radius:8px;background:#fff;box-shadow:0 8px 30px rgba(15,42,73,.045);transition:border-color .15s,box-shadow .15s,transform .15s}.catalog-card:hover{border-color:#9ebbd6;box-shadow:0 12px 32px rgba(15,42,73,.1);transform:translateY(-2px)}.catalog-cover{height:235px;display:flex;align-items:center;justify-content:center;padding:16px;background:#f6f9fc;border-bottom:1px solid #e3ebf3}.catalog-cover img{display:block;width:100%;height:100%;object-fit:contain}.catalog-card-body{padding:18px 20px 20px}.catalog-meta{display:flex;flex-wrap:wrap;gap:8px 14px;color:#537695;font:700 11px/1.4 Arial,sans-serif;letter-spacing:.035em}.catalog-card h3{margin:13px 0 13px;color:#24384c;font-size:17px;line-height:1.55}.catalog-card-foot{display:flex;justify-content:space-between;gap:12px;color:#738294;font-size:11px}.catalog-read{color:#315f8b;font-weight:700}.catalog-empty{margin:0;color:#77889a;font-size:13px;line-height:1.7}
@media(max-width:700px){.catalog-main{padding-top:32px}.catalog-grid{grid-template-columns:1fr}.catalog-cover{height:210px}.catalog-intro h1{font-size:25px}.catalog-private{display:none}}
.catalog-card-body{display:flex;flex:1;flex-direction:column}
.catalog-card-foot{align-items:baseline;margin-top:auto}
.catalog-read{white-space:nowrap}

/* Shared navigation icons: rounded, consistent line geometry. */
[class^="ui-arrow-"]{display:inline-block;width:16px;height:16px;vertical-align:-3px;flex:none;background:currentColor;mask:var(--arrow-icon) center/contain no-repeat;-webkit-mask:var(--arrow-icon) center/contain no-repeat}
.ui-arrow-left{--arrow-icon:url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A//www.w3.org/2000/svg%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22black%22%20stroke-width%3D%221.7%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Cpath%20d%3D%22M19%2012H5m6-6-6%206%206%206%22/%3E%3C/svg%3E")}
.ui-arrow-right{--arrow-icon:url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A//www.w3.org/2000/svg%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22black%22%20stroke-width%3D%221.7%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Cpath%20d%3D%22M5%2012h14m-6-6%206%206-6%206%22/%3E%3C/svg%3E")}
.ui-arrow-up{--arrow-icon:url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A//www.w3.org/2000/svg%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22black%22%20stroke-width%3D%221.7%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Cpath%20d%3D%22M12%2019V5m-6%206%206-6%206%206%22/%3E%3C/svg%3E")}
.ui-arrow-down{--arrow-icon:url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A//www.w3.org/2000/svg%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22black%22%20stroke-width%3D%221.7%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Cpath%20d%3D%22M12%205v14m-6-6%206%206%206-6%22/%3E%3C/svg%3E")}
.ui-arrow-external{--arrow-icon:url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A//www.w3.org/2000/svg%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22black%22%20stroke-width%3D%221.7%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Cpath%20d%3D%22M6%2018%2018%206M7%206h11v11%22/%3E%3C/svg%3E")}
.figure-edge-nav [class^="ui-arrow-"]{width:26px;height:26px}.figure-controls button [class^="ui-arrow-"]{width:20px;height:20px}.article-footer button,.article-footer a,.catalog-read{display:inline-flex;align-items:center;justify-content:center;gap:7px}.top-link [class^="ui-arrow-"]{width:14px;height:14px;vertical-align:-2px}