/* WorldTrace public surface.
 * The block below is the FU-1.1 visual contract, lifted verbatim from
 * design/fu-1.1/event-detail.html so the rendered page keeps the agreed
 * hierarchy, sticky section nav and responsive behaviour. Extracted to a file
 * because the Content-Security-Policy forbids inline styles.
 */
:root{--ink:#10233f;--muted:#64748b;--line:#dbe5ef;--paper:#f6f9fc;--panel:#fff;--blue:#1463ff;--cyan:#14b8a6;--amber:#d97706;--red:#c2414b;--navy:#0d1d34;--radius:18px;--shadow:0 14px 40px rgba(15,35,65,.08)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:linear-gradient(180deg,#edf5ff 0,#f7fafc 340px,#f7fafc 100%);font:15px/1.65 ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif}a{color:inherit}.topline{height:4px;background:linear-gradient(90deg,var(--blue),#36a4ff 48%,var(--cyan))}.nav{height:70px;display:flex;align-items:center;border-bottom:1px solid rgba(180,200,220,.65);background:rgba(255,255,255,.86);backdrop-filter:blur(16px);position:sticky;top:0;z-index:20}.nav-inner,.wrap{width:min(1380px,calc(100% - 48px));margin:auto}.nav-inner{display:flex;align-items:center;gap:30px}.brand{display:flex;align-items:center;gap:11px;font-size:20px;font-weight:800;text-decoration:none;white-space:nowrap}.mark{width:30px;height:30px;border-radius:9px;background:conic-gradient(from 20deg,var(--blue),#61c8ff,var(--cyan),var(--blue));box-shadow:inset 0 0 0 7px white,0 0 0 1px #cbdbea}.nav-links{display:flex;gap:4px}.nav-links a{padding:8px 13px;color:#48617e;text-decoration:none;border-radius:9px}.nav-links a.active{background:#e9f1ff;color:#154db8;font-weight:700}.nav-meta{margin-left:auto;color:var(--muted);font-size:13px}.wrap{padding:30px 0 80px}.crumb{color:#69809a;font-size:13px;margin-bottom:18px}.hero{display:grid;grid-template-columns:minmax(0,1fr) 350px;gap:24px}.hero-main,.judgement,.card{background:rgba(255,255,255,.95);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.hero-main{padding:32px 38px 30px;position:relative;overflow:hidden}.hero-main:before{content:"";position:absolute;inset:0 auto auto 0;width:100%;height:4px;background:linear-gradient(90deg,var(--blue),var(--cyan))}.eyebrow{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}.pill{display:inline-flex;align-items:center;gap:6px;border-radius:999px;padding:5px 10px;background:#edf4ff;color:#2357a8;font-size:12px;font-weight:700}.pill.green{background:#e8f8f3;color:#14715f}.pill.amber{background:#fff4dc;color:#9a5a08}.hero h1{font-size:clamp(30px,3.6vw,48px);line-height:1.16;letter-spacing:-.035em;margin:0 0 18px;max-width:920px}.dek{font-size:18px;line-height:1.75;color:#405774;max-width:900px;margin:0}.fact-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:13px;overflow:hidden;margin-top:28px}.fact{background:#f8fbff;padding:13px 15px}.fact b{display:block;color:#17314f;font-size:14px}.fact span{display:block;color:var(--muted);font-size:12px;margin-top:2px}.judgement{padding:24px}.judgement h2{font-size:15px;margin:0 0 16px}.status-block{padding:14px;border-left:3px solid var(--cyan);background:#f0fbf8;border-radius:6px 12px 12px 6px;margin-bottom:12px}.status-block.unknown{border-left-color:var(--amber);background:#fff8e8}.status-label{text-transform:uppercase;letter-spacing:.08em;font-size:10px;font-weight:800;color:#617388}.status-block strong{display:block;margin-top:2px;font-size:15px}.status-block p{margin:5px 0 0;color:#566b82;font-size:13px}.freshness{margin-top:18px;padding-top:16px;border-top:1px solid var(--line);color:var(--muted);font-size:12px}.anchorbar{display:flex;gap:6px;flex-wrap:wrap;margin:22px 0}.anchorbar a{text-decoration:none;background:#eaf0f7;color:#3d536c;border-radius:10px;padding:8px 12px;font-size:13px}.content-grid{display:grid;grid-template-columns:minmax(0,1fr) 350px;gap:24px;align-items:start}.stack{display:grid;gap:20px}.card{padding:27px 30px}.card h2{font-size:21px;margin:0 0 5px;letter-spacing:-.02em}.section-kicker{color:var(--muted);font-size:13px;margin-bottom:21px}.timeline{position:relative;padding-left:22px}.timeline:before{content:"";position:absolute;left:6px;top:9px;bottom:12px;width:2px;background:#d9e5f2}.moment{position:relative;padding:0 0 24px 21px}.moment:last-child{padding-bottom:0}.moment:before{content:"";position:absolute;left:-21px;top:7px;width:12px;height:12px;background:white;border:3px solid var(--blue);border-radius:50%}.moment.current:before{border-color:var(--amber)}.moment time{font-weight:800;color:#28538e;font-size:12px}.moment h3{margin:2px 0 4px;font-size:16px}.moment p{margin:0;color:#5a6f86}.claim{border:1px solid var(--line);border-radius:14px;padding:17px 18px;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:15px;margin-top:12px}.claim:first-of-type{margin-top:0}.claim h3{font-size:15px;margin:0 0 4px}.claim p{margin:0;color:var(--muted);font-size:13px}.state{height:max-content;padding:5px 9px;border-radius:8px;background:#e7f8f2;color:#0b725b;font-size:11px;font-weight:800;white-space:nowrap}.state.unknown{background:#fff2d8;color:#955705}.evidence-link{display:inline-flex;margin-top:9px;color:#175bc8;text-decoration:none;font-weight:700;font-size:12px}.relation{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:10px;border:1px solid var(--line);border-radius:13px;padding:14px;margin-top:10px}.entity{background:#f2f6fb;border-radius:9px;padding:9px 10px;font-weight:700;font-size:12px}.edge{text-align:center;color:#4e6680;font-size:11px}.edge b{display:block;color:#1463ff}.source{padding:14px 0;border-bottom:1px solid var(--line)}.source:last-child{border:0;padding-bottom:0}.source-no{font:700 11px/1 ui-monospace,monospace;color:var(--blue)}.source h3{font-size:14px;line-height:1.4;margin:5px 0}.source p{margin:0;color:var(--muted);font-size:12px}.source a{display:inline-block;margin-top:7px;color:#1859bb;font-size:12px;font-weight:700;text-decoration:none}.callout{background:var(--navy);color:#eaf3ff;border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}.callout h2{font-size:18px;margin:0 0 8px}.callout p{color:#adbed3;margin:0;font-size:13px}.callout ul{padding-left:18px;margin:14px 0 0}.callout li{margin:7px 0}.version{font-size:12px;color:var(--muted);display:grid;gap:7px}.version div{display:flex;justify-content:space-between;gap:20px}.footer{margin-top:30px;padding:24px 0;color:#718399;font-size:12px;border-top:1px solid var(--line);display:flex;justify-content:space-between}.mobile-tabs{display:none}
@media(max-width:900px){.nav{height:60px}.nav-inner,.wrap{width:min(100% - 28px,700px)}.nav-links{display:none}.nav-meta{font-size:0;min-width:44px;min-height:44px;display:flex;align-items:center;justify-content:flex-end}.nav-meta:after{content:"中文";font-size:12px}.wrap{padding-top:18px}.hero,.content-grid{grid-template-columns:1fr}.hero-main{padding:25px 21px}.hero h1{font-size:31px}.dek{font-size:16px}.fact-strip{grid-template-columns:1fr 1fr}.judgement{padding:20px}.anchorbar{display:flex;position:sticky;top:60px;z-index:18;overflow-x:auto;flex-wrap:nowrap;background:rgba(247,250,252,.96);padding:9px 0;margin:14px 0;scrollbar-width:none}.anchorbar a{min-height:44px;display:flex;align-items:center;white-space:nowrap}.card{padding:22px 20px}.content-grid{gap:18px}.claim{grid-template-columns:1fr}.relation{grid-template-columns:1fr}.edge{text-align:left;padding-left:8px}.footer{display:block}.footer span{display:block;margin:5px 0}.mobile-tabs{display:none}.wrap{padding-bottom:54px}}
  

/* ---- WorldTrace additions: index, home, error and evidence-drawer surfaces.
 * These extend the design contract to the pages the mock did not cover, using
 * the same tokens, spacing and card language. ---- */
.lede{max-width:900px}
.section-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin:34px 0 16px;flex-wrap:wrap}
.section-head h2{font-size:22px;margin:0;letter-spacing:-.02em}
.section-head p{margin:0;color:var(--muted);font-size:13px}
.count-line{display:inline-flex;align-items:center;gap:8px;background:#e9f1ff;color:#154db8;border-radius:999px;padding:6px 14px;font-size:13px;font-weight:700}
.facets{display:flex;gap:8px;flex-wrap:wrap;margin:14px 0 20px}
.facet{display:inline-flex;align-items:center;gap:7px;border:1px solid var(--line);background:var(--panel);border-radius:999px;padding:7px 13px;font-size:13px;color:#3d536c}
.facet b{color:#17314f}
.facet[aria-current="true"]{background:#e9f1ff;border-color:#c3d9ff;color:#154db8}
.event-list{display:grid;gap:18px}
.event-card{display:block;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:26px 28px;text-decoration:none;color:inherit}
.event-card:hover{border-color:#b9d0ee}
.event-card .eyebrow{margin-bottom:12px}
.event-card h3{font-size:24px;line-height:1.25;letter-spacing:-.02em;margin:0 0 10px}
.event-card p{margin:0;color:#4a6180;font-size:15px;line-height:1.7}
.event-card .meta{display:flex;gap:18px;flex-wrap:wrap;margin-top:16px;color:var(--muted);font-size:12px}
.event-card .meta b{color:#28538e}
.tagrow{display:flex;gap:7px;flex-wrap:wrap;margin-top:14px}
.tag{background:#f1f5fa;border-radius:8px;padding:4px 9px;color:#4e6680;font-size:12px}
.empty-state{background:var(--panel);border:1px dashed #c3d3e4;border-radius:var(--radius);padding:40px 32px;text-align:left;color:#4a6180}
.empty-state h3{margin:0 0 8px;font-size:19px;color:var(--ink)}
.empty-state p{margin:0;font-size:14px;line-height:1.75;max-width:640px}
.notice{background:var(--panel);border:1px solid var(--line);border-left:4px solid var(--amber);border-radius:6px 14px 14px 6px;padding:22px 24px;box-shadow:var(--shadow)}
.notice.error{border-left-color:var(--red)}
.notice h1{font-size:26px;margin:0 0 10px;letter-spacing:-.02em}
.notice p{margin:0 0 10px;color:#4a6180;font-size:15px;line-height:1.7}
.notice .code{font:700 12px/1 ui-monospace,monospace;color:var(--muted);letter-spacing:.08em;text-transform:uppercase}
.notice ul{margin:12px 0 0;padding-left:20px;color:#4a6180;font-size:14px}
.notice li{margin:6px 0}
.drawer{margin-top:11px;border-top:1px dashed var(--line);padding-top:10px}
.drawer>summary{cursor:pointer;color:#175bc8;font-weight:700;font-size:12px;list-style:none;display:inline-flex;align-items:center;gap:6px;min-height:32px}
.drawer>summary::-webkit-details-marker{display:none}
.drawer>summary::before{content:"▸";font-size:11px}
.drawer[open]>summary::before{content:"▾"}
.drawer ul{margin:9px 0 0;padding-left:18px}
.drawer li{margin:5px 0;font-size:12px;color:#566b82}
.drawer a{color:#175bc8;font-weight:700;text-decoration:none}
.drawer a:hover{text-decoration:underline}
.known-unknown{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:20px}
.known-unknown section{border:1px solid var(--line);border-radius:13px;padding:16px 18px;background:#f8fbff}
.known-unknown h3{margin:0 0 9px;font-size:14px;color:#17314f}
.known-unknown ul{margin:0;padding-left:18px}
.known-unknown li{margin:6px 0;color:#566b82;font-size:13px}
.known-unknown .unknown-col{background:#fffaf0;border-color:#f0dcb8}
.rights-line{margin-top:6px;color:var(--muted);font-size:11px}
.quote{margin:8px 0 0;padding:8px 11px;border-left:3px solid #d9e5f2;background:#f8fbff;color:#4a6180;font-size:12px;line-height:1.6}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--panel);color:var(--ink);padding:10px 16px;z-index:60;border-radius:0 0 10px 0}
.skip-link:focus{left:0}
:focus-visible{outline:3px solid #1463ff;outline-offset:2px}
.footer-nav{display:flex;gap:14px;flex-wrap:wrap}
.footer-nav a{color:#718399;text-decoration:none}
.footer-nav a:hover{text-decoration:underline}
@media(max-width:900px){.known-unknown{grid-template-columns:1fr}.event-card{padding:21px 20px}.event-card h3{font-size:20px}.section-head{margin:26px 0 12px}}
.brand-sub{color:#8292a5;font-weight:600}
.search-shortcut{display:none}
@media(max-width:900px){.search-shortcut{display:inline-flex;align-items:center;justify-content:center;margin-left:auto;min-height:44px;min-width:44px;text-decoration:none;color:#175bc8;font-weight:700}.nav-inner{gap:12px}.nav-meta{margin-left:0}}
.latest-change{margin-top:18px;padding:13px 15px;border:1px solid #c9d9ed;border-left:4px solid var(--blue);border-radius:10px;background:#f4f8ff}
.latest-change span{display:block;color:#527097;font-size:11px;font-weight:800;letter-spacing:.04em}
.latest-change strong{display:block;margin-top:3px;font-size:14px}
.latest-change p{margin:3px 0 0;color:#50677f;font-size:12px;line-height:1.55}
.version-history{list-style:none;margin:10px 0 0;padding:0;font-size:12px;color:var(--muted)}
.version-history li{padding:7px 0;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap}
.version-history b{color:#17314f}

/* FU-1.3: correction notice and conflict/qualification card. */
.correction-notice{margin-top:24px;padding:16px 18px;border:1px solid #f0c98a;border-left:4px solid var(--amber);border-radius:6px 13px 13px 6px;background:#fff8e8}
.correction-kicker{display:block;text-transform:uppercase;letter-spacing:.06em;font-size:11px;font-weight:800;color:#8a5406}
.correction-notice p{margin:7px 0 0;font-size:14px;color:#4a5f78}
.correction-versions{font-weight:700;color:#7a4a06}
.conflict-subject{border:1px solid var(--line);border-radius:14px;padding:16px 17px;background:#f8fbff}
.conflict-subject h3{margin:6px 0 10px;font-size:16px}
.attribution{border-top:1px solid var(--line);padding-top:11px;margin-top:11px}
.attribution-kind{display:inline-block;border-radius:999px;padding:3px 9px;background:#edf4ff;color:#2357a8;font-size:11px;font-weight:700;margin-bottom:5px}
.attribution-role{display:block;color:var(--muted);font-size:12px}
.qualifier{border:1px solid var(--line);border-radius:13px;padding:14px 15px;margin-top:11px}
.qualifier p{margin:6px 0 0;font-size:13px;color:#5a6f86}
.qualifier-object{font-weight:700;color:#22405f}
.qualifier-object .state{margin-left:8px}
.relation-tag{display:inline-block;border-radius:8px;padding:3px 9px;background:#e9eff8;color:#33506f;font-size:11px;font-weight:800}
.qualifier-evidence{margin:8px 0 0;padding-left:18px;font-size:12px;color:var(--muted)}
.conflict-conclusion{margin-top:14px;padding-top:12px;border-top:1px solid var(--line);font-weight:700;color:#22405f}
@media(max-width:900px){.correction-notice{padding:14px 15px}.qualifier-object .state{display:inline-block;margin:6px 0 0}}

/* FU-3.1: entity identity index and detail. Same tokens, cards and spacing as
 * the event surfaces; nothing here depends on hover to reveal content. */
.lede h1{font-size:clamp(26px,3vw,36px);line-height:1.22;letter-spacing:-.03em;margin:0 0 10px}
.lede p{margin:0;color:#41597a;font-size:15px;line-height:1.75}
.entity-search{display:flex;gap:12px;flex-wrap:wrap;align-items:flex-end;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px 18px;margin:18px 0 16px}
.entity-search label{display:grid;gap:5px;font-size:12px;color:var(--muted);font-weight:700}
.entity-search input,.entity-search select{min-height:44px;min-width:210px;padding:8px 11px;border:1px solid var(--line);border-radius:9px;background:#fff;color:var(--ink)}
.link-button{display:inline-flex;align-items:center;min-height:44px;padding:10px 16px;background:#eaf2ff;border:1px solid #cddfff;border-radius:9px;text-decoration:none;font-size:13px;font-weight:700;color:#154db8;cursor:pointer}
.link-button:hover{border-color:#a9c8ff}
.link-button.quiet{background:var(--panel);border-color:var(--line);color:#41597a}
.entity-list{display:grid;gap:14px;margin-top:14px}
.entity-item{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px 24px}
.entity-item h2{font-size:22px;margin:10px 0 6px;letter-spacing:-.02em}
.entity-item h2 a{text-decoration:none}
.entity-item h2 a:hover{color:#154db8}
.entity-facts{margin:0 0 14px;color:var(--muted);font-size:13px}
.pager{display:flex;gap:14px;align-items:center;flex-wrap:wrap;margin-top:16px;padding-top:13px;border-top:1px solid var(--line);font-size:12px;color:var(--muted)}
.pager a{color:#154db8;text-decoration:none;font-weight:700;min-height:44px;display:inline-flex;align-items:center}
.identity-head{padding:30px 34px}
.identity-head h1{font-size:clamp(26px,3vw,38px);line-height:1.2;letter-spacing:-.03em;margin:0 0 14px}
.identity-head .fact-strip{grid-template-columns:repeat(3,1fr)}
.identity-head .fact b{font-size:19px}
.identity-stack{margin-top:22px}
.alias-item{border:1px solid var(--line);border-radius:14px;padding:16px 17px;margin-top:12px}
.alias-item:first-of-type{margin-top:0}
.alias-name{font-size:17px;font-weight:800;margin:0 0 7px;word-break:break-word}
.alias-meta{display:flex;gap:9px;flex-wrap:wrap;align-items:center;font-size:12px;color:var(--muted)}
.alias-flag{margin:10px 0 0;padding:9px 12px;border-left:3px solid var(--amber);background:#fff8e8;border-radius:0 9px 9px 0;font-size:12px;color:#6d4a10}
.srcline{margin:10px 0 0;font-size:12px;color:var(--muted)}
.srcline a{color:#175bc8;font-weight:700;text-decoration:none;word-break:break-word}
.srcline a:hover{text-decoration:underline}
.related{border:1px solid var(--line);border-radius:14px;padding:16px 17px;margin-top:12px}
.related:first-of-type{margin-top:0}
.related h3{font-size:17px;line-height:1.45;margin:0 0 7px}
.related h3 a{text-decoration:none}
.related h3 a:hover{color:#154db8}
.related p{margin:0;color:#4a6180;font-size:13px;line-height:1.7}
.related .when{display:block;margin-top:10px;color:var(--muted);font-size:12px}
@media(max-width:900px){.entity-search{padding:14px;gap:10px}.entity-search label{width:100%}.entity-search input,.entity-search select{width:100%;min-width:0}.entity-search .link-button{width:100%;justify-content:center}.identity-head{padding:22px 20px}.identity-head .fact-strip{grid-template-columns:1fr}.entity-item{padding:18px 19px}.entity-item h2{font-size:19px}.identity-stack{margin-top:16px}}