/* 借用 TMS 的语义色、卡片、按钮与状态规则，触控尺寸按手机优先调整。 */
:root {
  color-scheme: light;
  --bg:#f7fafc; --surface:#fff; --surface-2:#f6f8fa;
  --text-primary:#171a1f; --text-secondary:#5d6878; --border:#e5eaef;
  --blue:#2e54eb; --blue-light:#eaf0ff; --accent-strong:#2e54eb;
  --red:#c72f36; --red-light:#fef0f0; --green:#237c35; --green-light:#ebf5ec;
  --orange:#8c570d; --orange-light:#fef5eb; --focus-ring:#2e54eb;
  --shadow-card:0 1px 3px rgba(23,26,31,.06); --shadow-dialog:0 12px 38px rgba(23,26,31,.18);
  --radius-s:6px; --radius-m:9px; --radius-l:14px;
  --z-confirm:400; --overlay:rgba(15,20,25,.55);
}
html[data-theme='dark'] {
  color-scheme:dark;
  --bg:#0f1419; --surface:#1a2027; --surface-2:#161b22;
  --text-primary:#e8edf2; --text-secondary:#acb7c5; --border:#323d49;
  --blue:#9eb4ff; --blue-light:#26314a; --accent-strong:#2e54eb;
  --red:#ff8585; --red-light:#3a2222; --green:#76df8e; --green-light:#1e3a28;
  --orange:#ffc076; --orange-light:#3a2e1e; --focus-ring:#9eb4ff;
  --shadow-card:0 1px 3px rgba(0,0,0,.4); --shadow-dialog:0 12px 38px rgba(0,0,0,.5);
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text-primary);font:16px/1.65 'Noto Sans SC','Microsoft YaHei','PingFang SC',sans-serif;overflow-wrap:anywhere}
a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}
button,input,textarea,select{font:inherit}button,.button{cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:9px 16px;border:1px solid var(--accent-strong);border-radius:var(--radius-m);background:var(--accent-strong);color:#fff;font-weight:600;line-height:1.4;text-align:center}
button:hover,.button:hover{filter:brightness(.93);text-decoration:none}button:disabled{cursor:not-allowed;opacity:.5}
button.secondary,.button.secondary{background:var(--surface);color:var(--text-primary);border-color:var(--border)}
button.danger,.button.danger{background:var(--surface);color:var(--red);border-color:var(--red)}
.link-button{min-height:40px;padding:6px 8px;color:var(--red);background:transparent;border:0;font-size:14px}
.shell{width:min(100% - 32px,1140px);margin-inline:auto}
.app-header{background:var(--surface);border-bottom:1px solid var(--border)}
.top,.header-actions,.account,.brand{display:flex;align-items:center}
.top{min-height:64px;justify-content:space-between;gap:8px;padding:10px 0}
.brand{min-width:0;gap:10px;color:var(--text-primary);font-size:17px;font-weight:700;line-height:1.25}
.brand:hover{text-decoration:none}.brand small{display:block;margin-top:3px;color:var(--text-secondary);font-size:11px;font-weight:400}
.seal{display:grid;place-items:center;flex:none;width:38px;height:38px;border-radius:var(--radius-m);background:var(--accent-strong);color:#fff;font-size:18px}
.header-actions{flex:none;gap:4px}.account{gap:2px;font-size:13px}.account span{max-width:72px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.account form{margin:0}
.theme-toggle{min-height:40px;padding:6px 8px;font-size:13px;font-weight:500}
.nav{display:flex;flex-wrap:nowrap;gap:4px;overflow-x:auto;overscroll-behavior-x:contain;scroll-snap-type:x proximity;padding:0 0 8px;scrollbar-width:thin}
.nav a{display:inline-flex;align-items:center;flex:none;min-height:44px;padding:8px 12px;border-radius:var(--radius-m);color:var(--text-secondary);font-size:14px;white-space:nowrap;scroll-snap-align:start}
.nav a:hover,.nav a[aria-current='page']{background:var(--blue-light);color:var(--blue);text-decoration:none}.nav a[aria-current='page']{font-weight:700}
main{min-height:65vh;padding:20px 0 48px}footer{border-top:1px solid var(--border);padding:20px 0 calc(20px + env(safe-area-inset-bottom));color:var(--text-secondary);font-size:12px}
h1,h2,h3{margin:0;color:var(--text-primary);font-weight:700;line-height:1.35;overflow-wrap:anywhere}h1{font-size:26px;margin:8px 0 16px}h2{font-size:19px;margin:0 0 16px}h3{font-size:16px;margin:0 0 12px}p{margin:12px 0}.muted,.hint,small{color:var(--text-secondary)}.small,.hint,.helptext,small{font-size:13px}
.eyebrow{margin:0 0 8px;color:var(--blue);font-size:12px;font-weight:600;letter-spacing:.04em}
.hero{padding:8px 0 20px;margin-bottom:20px;border-bottom:1px solid var(--border)}.hero h1{font-size:26px}.hero p:last-child{max-width:680px;margin-bottom:0;color:var(--text-secondary)}
.section-head,.section-heading{display:flex;align-items:center;justify-content:space-between;gap:12px}.section-head h2,.section-heading h2{margin:0}.section-head>a,.section-heading>a{display:inline-flex;align-items:center;min-height:44px;flex:none;font-size:14px;font-weight:600}
.page-head{display:flex;flex-direction:column;align-items:flex-start;gap:12px;margin:8px 0 24px}.page-head p:last-child{margin-bottom:0}
.card{min-width:0;margin:16px 0;padding:20px;border:1px solid var(--border);border-radius:var(--radius-l);background:var(--surface);box-shadow:var(--shadow-card)}.card p:last-child{margin-bottom:0}
.grid{display:grid;grid-template-columns:minmax(0,1fr);gap:16px;margin:16px 0}.grid>.card{margin:0}
.event-card{display:block;color:inherit}.event-card:hover{border-color:var(--blue);text-decoration:none}.event-card h2{margin:12px 0 8px}.event-card p{color:var(--text-secondary);font-size:14px}.event-link{margin-top:16px;color:var(--blue);font-size:14px;font-weight:600}
.narrow{max-width:640px;margin:16px auto}.auth-layout{display:grid;gap:8px;max-width:900px;margin:0 auto}.intro{padding:8px 0}.intro p{max-width:440px}.ink-line{display:none}.auth-card{padding:24px}.auth-card h2{margin-bottom:20px}.auth-card form button{width:100%}
.actions,.dialog-actions{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin-top:20px}.actions form{margin:0}.actions>a:not(.button){display:inline-flex;align-items:center;min-height:44px;padding:8px}
.form-wide{max-width:860px}form p{margin:18px 0}label{display:block;margin-bottom:7px;font-size:14px;font-weight:600}
input:not([type=checkbox]):not([type=radio]):not([type=hidden]),select,textarea{display:block;width:100%;min-width:0;min-height:44px;padding:9px 12px;border:1px solid var(--border);border-radius:var(--radius-m);background:var(--surface);color:var(--text-primary);font-size:16px}
textarea{min-height:112px;resize:vertical}input[type=checkbox],input[type=radio]{width:20px;height:20px;margin:10px 8px 10px 0;accent-color:var(--blue);vertical-align:middle}label:has(input[type=checkbox]),label:has(input[type=radio]){display:inline-flex;align-items:center;min-height:44px}
input:focus,textarea:focus,select:focus{border-color:var(--blue)}.helptext{display:block;margin:8px 0;color:var(--text-secondary)}.errorlist{padding-left:20px;color:var(--red);font-size:14px}
.notice{margin:12px 0;padding:14px 16px;border:1px solid var(--border);border-radius:var(--radius-m);background:var(--blue-light);color:var(--text-primary)}.notice.success{background:var(--green-light);color:var(--green)}.notice.warning{background:var(--orange-light);color:var(--orange)}.notice.error{background:var(--red-light);color:var(--red)}
.badge{display:inline-block;padding:4px 10px;border-radius:99px;background:var(--blue-light);color:var(--blue);font-size:12px;font-weight:600;white-space:nowrap}
.table-wrap,.table-scroll{max-width:100%;overflow-x:auto}table{width:100%;border-collapse:collapse;font-size:14px}th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--border)}th{color:var(--text-secondary);background:var(--surface-2)}
.empty{padding:24px;text-align:center;color:var(--text-secondary)}.prose,.body-text{white-space:pre-wrap;overflow-wrap:anywhere}.body-text{margin:24px 0;line-height:1.8}
.skip{position:absolute;z-index:var(--z-confirm);left:8px;top:-80px;padding:10px;background:var(--accent-strong);color:#fff}.skip:focus{top:8px}
:focus-visible{outline:2px solid var(--focus-ring);outline-offset:3px}
details{margin:14px 0}summary{cursor:pointer;min-height:44px;padding:8px 0}.option{display:flex;align-items:center;gap:10px;min-height:44px;padding:8px 4px;font-weight:400}.nowrap{white-space:nowrap}
.member-list{border:1px solid var(--border);border-radius:var(--radius-l);background:var(--surface);overflow:hidden}.member-row{display:flex;align-items:center;gap:12px;padding:16px;border-bottom:1px solid var(--border);color:inherit}.member-row:last-child{border-bottom:0}.member-row:hover{background:var(--surface-2);text-decoration:none}.member-row div{flex:1;min-width:0}.member-row small{display:block;margin-top:4px}.search{display:flex;flex-wrap:wrap;align-items:center;gap:10px;max-width:520px;margin:24px 0}.search label{width:100%;margin:0}.search input{flex:1;min-width:140px}
.notice-row{display:block;padding:16px 0;border-bottom:1px solid var(--border);color:inherit}.notice-row h3{margin:8px 0}.timeline{margin:16px 0}.stage{display:grid;grid-template-columns:12px minmax(0,1fr);gap:12px;margin:16px 0}.stage-dot{width:10px;height:10px;margin-top:8px;border-radius:50%;background:var(--text-secondary)}.stage.working .stage-dot{background:var(--blue)}.stage.done .stage-dot{background:var(--green)}.stage.help .stage-dot{background:var(--orange)}.stage p{margin:6px 0;color:var(--text-secondary)}
fieldset{min-width:0;padding:0;border:0}#id_participants,#id_coordinators{max-height:240px;overflow:auto;padding:12px;border:1px solid var(--border);border-radius:var(--radius-m)}#id_participants label,#id_coordinators label{min-height:44px;font-weight:400}
.collection-entry{display:flex;flex-direction:column;align-items:flex-start;gap:12px;margin:24px 0}.template-links{display:flex;flex-wrap:wrap;gap:12px}.template-links a{display:inline-flex;align-items:center;min-height:44px}.question-preview{padding:10px 0}.question-preview p{margin:8px 0;color:var(--text-secondary)}
.metric-strip{display:flex;flex-wrap:wrap;gap:24px}.metric-strip div{min-width:100px}.metric-strip strong{display:block;color:var(--blue);font-size:32px;line-height:1.2}.metric-strip span,.metric-strip p{font-size:14px;color:var(--text-secondary)}.result-entry{margin:16px 0}.result-entry strong{font-size:14px;white-space:nowrap}meter{display:block;width:100%;height:14px;margin-top:8px}meter::-webkit-meter-bar{background:var(--surface-2);border:0;border-radius:var(--radius-s)}meter::-webkit-meter-optimum-value{background:var(--accent-strong)}.answer-detail{padding:12px 0;border-bottom:1px solid var(--border)}dt{margin-top:16px;font-weight:600}dd{margin:8px 0 20px}.name-list{display:flex;flex-wrap:wrap;gap:8px}.name-list span{padding:8px 12px;border-radius:var(--radius-m);background:var(--surface-2)}blockquote{margin:16px 0;padding:8px 16px;border-left:3px solid var(--blue);color:var(--text-secondary)}
.confirm-dialog{width:min(100% - 32px,440px);padding:24px;border:1px solid var(--border);border-radius:var(--radius-l);background:var(--surface);color:var(--text-primary);box-shadow:var(--shadow-dialog)}.confirm-dialog::backdrop{background:var(--overlay)}.confirm-dialog h2{margin:0}.dialog-actions{justify-content:flex-end}
@media(max-width:699px){.nav{gap:2px}.nav a{padding-inline:6px;font-size:13px}}
@media(min-width:700px){body{font-size:15px}.top{min-height:70px}.shell{width:min(100% - 48px,1140px)}main{padding-top:28px}.page-head{flex-direction:row;align-items:center;justify-content:space-between;gap:24px;margin:20px 0 28px}.grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}.card{padding:24px}.auth-layout{grid-template-columns:1fr 1fr;gap:48px;align-items:center;padding:32px 0}.intro{padding:24px 0}.ink-line{display:block;width:64px;height:2px;margin:24px 0;background:var(--blue)}.collection-entry{flex-direction:row;align-items:center;justify-content:space-between}}
@media(max-width:360px){.brand small{display:none}.account span{max-width:52px}.brand{font-size:16px}.seal{width:34px;height:34px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;animation-duration:.01ms!important;transition-duration:.01ms!important}}