:root{--ink:#102f42;--muted:#647985;--line:#d4e0e4;--paper:#fff;--wash:#eef4f5;--teal:#178784;--teal-dark:#0c6665}*{box-sizing:border-box}body{margin:0;background:var(--wash);color:var(--ink);font-family:Arial,"Microsoft YaHei",sans-serif}.viewer-header{height:74px;padding:0 max(22px,calc((100vw - 1280px)/2));display:flex;align-items:center;justify-content:space-between;background:#fff;border-bottom:1px solid var(--line)}.viewer-brand{display:grid;color:var(--ink);text-decoration:none;line-height:1}.viewer-brand strong{font-size:18px}.viewer-brand span{margin-top:6px;font-size:10px;letter-spacing:.17em;color:var(--muted)}.viewer-back{color:var(--teal-dark);font-size:13px;font-weight:700;text-decoration:none}.viewer-shell{width:min(1280px,calc(100% - 36px));margin:26px auto 48px}.viewer-intro{display:grid;grid-template-columns:1fr auto;column-gap:28px;align-items:end;padding:28px 30px;background:#fff;border:1px solid var(--line)}.viewer-category{grid-column:1;margin:0 0 8px;color:#bc6325;font-size:11px;font-weight:800;letter-spacing:.12em}.viewer-intro h1{grid-column:1;margin:0;font-size:clamp(27px,4vw,50px);line-height:1.1}.viewer-title-en{grid-column:1;margin:9px 0 0;color:var(--muted);font-size:15px}.viewer-meta{grid-column:1;display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}.viewer-meta span{padding:6px 9px;background:#edf4f4;color:#315160;font-size:11px;font-weight:700}.viewer-actions{grid-column:2;grid-row:1/5;display:flex;flex-direction:column;gap:9px;min-width:210px}.viewer-actions a{display:flex;align-items:center;justify-content:center;min-height:46px;padding:0 18px;text-decoration:none;font-size:13px;font-weight:800}.viewer-download{background:var(--teal);color:#fff}.viewer-open{border:1px solid var(--line);color:var(--teal-dark);background:#fff}.viewer-frame-wrap{height:calc(100vh - 205px);min-height:620px;margin-top:16px;background:#3a4449;border:1px solid #263238;box-shadow:0 16px 45px rgba(25,48,58,.16)}.viewer-frame{width:100%;height:100%;border:0;background:#fff}.viewer-message{height:100%;display:grid;place-items:center;color:#fff;font-size:14px}.viewer-error{padding:70px 30px;text-align:center;background:#fff;border:1px solid var(--line)}.viewer-error h2{font-size:28px}.viewer-error p{color:var(--muted)}.viewer-error a{display:inline-flex;margin-top:10px;padding:13px 20px;background:var(--teal);color:#fff;text-decoration:none;font-weight:800}@media(max-width:720px){.viewer-header{height:64px;padding:0 16px}.viewer-shell{width:100%;margin:0}.viewer-intro{grid-template-columns:1fr;padding:23px 18px;border-width:0 0 1px}.viewer-actions{grid-column:1;grid-row:auto;display:grid;grid-template-columns:1fr 1fr;min-width:0;margin-top:20px}.viewer-actions a{padding:0 8px}.viewer-frame-wrap{height:calc(100dvh - 300px);min-height:520px;margin:0;border-width:0}.viewer-title-en{font-size:13px}}
[hidden]{display:none!important}
.reader{margin-top:16px;border:1px solid #c8d6dc;background:#dce4e7;min-height:360px}
.reader-toolbar{display:flex;align-items:center;justify-content:center;gap:10px;padding:12px;background:#fff;border-bottom:1px solid #c8d6dc;position:sticky;top:0;z-index:2;flex-wrap:wrap}
.reader-toolbar label{display:flex;align-items:center;gap:7px;font-size:12px}.reader-toolbar button,.reader-toolbar input,.reader-toolbar select,.viewer-error button{min-height:42px;border:1px solid #bdd0d5;border-radius:4px;background:#fff;color:#143043;font:inherit;padding:7px 12px}.reader-toolbar button{min-width:44px;cursor:pointer}.reader-toolbar button:disabled{opacity:.35}.reader-toolbar input{width:65px}.reader-toolbar select{max-width:160px}.reader-toolbar :focus-visible{outline:2px solid #178784;outline-offset:2px}.reader-scroll{overflow:auto;padding:12px;min-height:200px;text-align:center;overscroll-behavior-x:contain}.reader-scroll canvas{display:block;margin:0 auto;background:#fff;box-shadow:0 3px 15px #17334333;max-width:none}.reader-status{padding:18px;text-align:center;color:#143043;margin:0}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.viewer-error button{cursor:pointer}.viewer-meta{color:#647985;font-size:12px}@media(max-width:720px){.reader{margin-top:0;border:0}.reader-toolbar{gap:6px}.reader-zoom-label{flex-basis:100%;justify-content:center}.reader-scroll{padding:12px}.viewer-intro h1{font-size:29px}}