*{box-sizing:border-box} :root{font-family:"Microsoft YaHei","PingFang SC",system-ui,sans-serif;color:#172e24;background:#eff4ee;line-height:1.6;--green:#245c45;--border:#dbe5dc}
body{margin:0} header{max-width:860px;margin:auto;padding:18px 20px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:10px;font-size:19px}.mark{display:grid;place-items:center;width:36px;height:36px;background:var(--green);color:white;border-radius:11px}
main{max-width:860px;margin:0 auto;padding:12px 20px 110px} h1,h2,h3,p{margin:0 0 12px}h1{font-size:clamp(30px,7vw,46px);line-height:1.17;letter-spacing:-.04em}h2{font-size:22px}h3{font-size:17px}.muted,small{color:#52685a}.hero{background:#163e2e;color:#fff;border-radius:25px;padding:clamp(24px,6vw,46px);margin-bottom:20px;overflow:hidden;position:relative}.hero:after{content:"";position:absolute;width:220px;height:220px;right:-110px;top:-100px;border:28px solid #ffffff13;border-radius:50%;pointer-events:none}.hero p{color:#d5e8db}.eyebrow{display:block;color:#c5e98f;font-size:13px;margin-bottom:12px}.card{background:#fff;border:1px solid var(--border);border-radius:19px;padding:19px;margin-bottom:12px}.login{max-width:460px;margin:12px auto}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.stat strong{display:block;font-size:28px}.row{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap}
button,.button{font:inherit;font-weight:650;cursor:pointer;min-height:44px;border:0;border-radius:11px;background:var(--green);color:white;padding:9px 15px;text-decoration:none;display:inline-block;text-align:center}button:disabled{opacity:.55;cursor:default}.quiet{background:#e1ebe1;color:#234f3c}.hero button{background:#d9f1a9;color:#213a21}.wide{width:100%}label{display:block;font-size:14px;margin-bottom:12px;font-weight:650}input{display:block;width:100%;font:inherit;border:1px solid #aebfb2;border-radius:10px;padding:10px 12px;margin-top:5px;background:#fbfdfb;color:inherit}input[type=file]{padding:8px}.option{display:block;text-align:left;width:100%;margin:8px 0;background:#f5f8f4;color:#172e24;border:1px solid var(--border);overflow-wrap:anywhere}.option.selected,.option.correct{background:#dbefde;border-color:#41895f}.option.incorrect{background:#fae1dc;border-color:#b36353}.question{overflow-wrap:anywhere;white-space:pre-wrap}.feedback{padding:12px;background:#eff4ee;border-radius:11px;margin:12px 0}.error{color:#8e3028}nav{position:fixed;bottom:0;left:0;right:0;background:#fff;border-top:1px solid var(--border);display:flex;justify-content:center;gap:5px;padding:7px 9px calc(7px + env(safe-area-inset-bottom))}nav button{background:white;color:#52685a;min-width:0;flex:1;max-width:140px;padding:8px 5px}nav button.current{background:#e2f0e5;color:#1c513a} [hidden]{display:none!important}#notice{position:fixed;bottom:77px;left:50%;transform:translateX(-50%);padding:10px 16px;background:#173d2e;color:#fff;border-radius:10px;max-width:90vw;width:max-content;z-index:2}table{width:100%;border-collapse:collapse;text-align:left}th,td{border-bottom:1px solid var(--border);padding:8px;overflow-wrap:anywhere} .countdown{font-variant-numeric:tabular-nums;font-weight:750}.progress{height:7px;accent-color:var(--green);width:100%;margin:8px 0 18px}.actions{margin-top:16px}.jump{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px}.jump button{min-width:44px;padding:6px}.section{margin-top:20px}
input[type="checkbox"]{display:inline-block;width:18px;height:18px;margin:0 8px 0 0;vertical-align:-4px;accent-color:var(--green)}
label:has(input[type="checkbox"]){display:flex;align-items:center;font-weight:500;margin:4px 0 14px}
.admin-hero{border-radius:14px;padding:28px 34px}.admin-shell{max-width:1180px;margin:0 auto}.admin-shell .grid{grid-template-columns:1fr 1fr;gap:20px}.admin-shell .card{border-radius:12px;padding:24px}.admin-shell h2{margin-top:28px}.admin-shell input[type=datetime-local],.admin-shell input[type=number]{max-width:100%}
@media(min-width:900px){header{max-width:1180px;padding:20px 28px}main{max-width:1180px;padding:20px 28px 80px}.admin-shell{display:grid;grid-template-columns:1fr 1fr;gap:18px}.admin-shell .admin-hero,.admin-shell>h2,.admin-shell>div.card.row{grid-column:1/-1}.admin-shell form{margin:0}.admin-shell .admin-hero{margin-bottom:4px}}
.admin-shell{grid-template-columns:220px minmax(0,1fr)}.admin-sidebar{grid-row:2 / span 3;background:#163e2e;color:#fff;border-radius:14px;padding:20px;height:max-content;position:sticky;top:18px}.sidebar-label{color:#c5e98f;font-size:13px;margin-bottom:16px}.side-stat{padding:14px 0;border-top:1px solid #ffffff22}.side-stat small{display:block;color:#c8ddd0}.side-stat strong{display:block;font-size:28px;line-height:1.25;margin-top:3px}.admin-shell .admin-hero{grid-column:2}.admin-shell form{grid-column:2}.admin-shell>h2,.admin-shell>div.card.row{grid-column:1/-1}
@media(max-width:899px){.admin-shell{display:block}.admin-sidebar{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;position:static;margin-bottom:12px}.sidebar-label{grid-column:1/-1;margin-bottom:0}.side-stat{border-top:0;padding:4px}.side-stat strong{font-size:22px}}
@media(min-width:1200px){body:has(.admin-shell) main{max-width:none;width:100%;padding:16px 28px 28px}.admin-shell{max-width:none;grid-template-columns:230px minmax(0,1fr)}.admin-shell .card{padding:18px}.admin-shell .admin-hero{padding:22px 28px}.admin-shell h2{margin:8px 0 12px} }
.admin-shell .admin-sidebar{align-self:start}
@media(min-width:1200px){body:has(.admin-shell){overflow:hidden}body:has(.admin-shell) main{height:calc(100vh - 90px);overflow:hidden}.admin-shell{height:100%;grid-template-columns:220px repeat(2,minmax(0,1fr));grid-template-rows:auto 1fr;align-content:start;gap:16px}.admin-shell .admin-sidebar{grid-row:1 / span 2}.admin-shell .admin-hero{grid-column:2/-1}.admin-shell form{grid-column:auto;min-height:0;height:max-content}.admin-shell form.card{padding:18px}.admin-shell form label{margin-bottom:8px}.admin-shell form input{padding:8px 10px}.admin-shell form .grid{gap:10px}.admin-shell>h2{grid-column:2}.admin-shell>div.card.row{grid-column:2/-1;margin:0;padding:14px 18px}.admin-shell .admin-hero{padding:18px 24px}.admin-shell .admin-hero h1{font-size:32px}.admin-shell .admin-hero p{margin-bottom:0}}
.admin-page{max-width:1180px;margin:0 auto}.admin-heading{background:#163e2e;color:#fff;border-radius:14px;padding:28px 34px;margin-bottom:18px}.admin-heading .eyebrow{color:#c5e98f}.admin-heading h1{font-size:clamp(30px,7vw,46px)}.admin-heading p{color:#d5e8db;margin:0}.admin-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.admin-card{border-radius:12px!important;padding:24px!important}.card-kicker{color:#245c45;font-size:16px;font-weight:700;margin-bottom:6px}.admin-published{margin-top:24px}.published-card{border-radius:12px!important}@media(max-width:899px){.admin-cards{grid-template-columns:1fr}} 
.admin-page{display:grid;grid-template-columns:220px minmax(0,1fr);gap:18px;align-items:start}.admin-sidebar{position:sticky;top:18px;background:#163e2e;color:#fff;border-radius:14px;padding:20px}.admin-sidebar strong{display:block;color:#c5e98f;margin-bottom:14px}.admin-sidebar div{border-top:1px solid #ffffff22;padding:12px 0}.admin-sidebar small{display:block;color:#c8ddd0}.admin-sidebar b{display:block;font-size:25px;line-height:1.2;margin-top:3px}.admin-main{min-width:0}@media(max-width:899px){.admin-page{display:block}.admin-sidebar{position:static;display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:14px}.admin-sidebar strong{grid-column:1/-1}.admin-sidebar div{border-top:0;padding:4px}.admin-sidebar b{font-size:20px}}
main:has(.admin-page){width:100%;max-width:1180px}.admin-page{width:100%;display:grid;grid-template-columns:220px minmax(0,1fr)}.admin-main{width:100%;min-width:0}.admin-cards{width:100%}
main:has(.admin-page){max-width:none!important;width:100%!important;padding-left:28px;padding-right:28px}.admin-page{width:100%!important;max-width:none!important;grid-template-columns:260px minmax(0,1fr)!important}.admin-main{width:auto!important;min-width:0!important}.admin-cards{grid-template-columns:repeat(2,minmax(0,1fr))!important}@media(max-width:899px){.admin-page{grid-template-columns:1fr!important}.admin-cards{grid-template-columns:1fr!important}}
/* definitive admin two-column layout */
main:has(.admin-page){display:block!important;width:100%!important;max-width:none!important}
.admin-page{display:flex!important;flex-direction:row!important;align-items:flex-start!important;width:100%!important;max-width:none!important;gap:24px!important}
.admin-page>.admin-sidebar{flex:0 0 260px!important;width:260px!important}
.admin-page>.admin-main{display:block!important;flex:1 1 auto!important;width:auto!important;min-width:0!important}
.admin-main>.admin-heading{width:100%!important}
.admin-main>.admin-cards{display:grid!important;width:100%!important;grid-template-columns:repeat(2,minmax(0,1fr))!important}
.admin-main>.admin-published{width:100%!important}
@media(max-width:899px){.admin-page{display:block!important}.admin-page>.admin-sidebar{width:100%!important}.admin-main>.admin-cards{grid-template-columns:1fr!important}}
/* admin action cards · Organic direction */
.admin-card{position:relative;background:#f7f1e6;border:1px solid #c7b99f!important;border-radius:24px!important;padding:28px!important;box-shadow:0 8px 0 rgba(96,108,56,.08);transition:transform .3s ease,box-shadow .3s ease}.admin-card:hover{transform:translateY(-3px);box-shadow:0 12px 0 rgba(96,108,56,.12)}.admin-card .card-kicker{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:50%;background:#606c38;color:#f7f1e6;font-size:16px;margin:0 0 20px}.admin-card h2{font-size:28px;letter-spacing:-.04em;color:#303a22;margin-bottom:22px}.admin-card .row{align-items:center}.admin-card .row h2{margin:0}.admin-card label{color:#4f4d3f;font-weight:700}.admin-card input{background:#fffdf8;border-color:#b9b59f;border-radius:14px}.admin-card input:focus{outline:3px solid #d4b895;border-color:#606c38}.admin-card input[type=file]{padding:16px;border:1px dashed #8b9d83;background:#eef0e5;border-radius:16px}.admin-card input[type=checkbox]{accent-color:#606c38}.admin-card button{background:#606c38;border-radius:14px;padding:11px 22px}.admin-card .quiet{background:#e4eadc!important;color:#3d4a27!important;border-color:#b6c2a6!important;border-radius:14px}.admin-card .muted{color:#786f5d}.admin-card .grid{gap:14px}.admin-published .published-card{background:#fffdf8;border-color:#c7b99f;border-radius:18px!important}.admin-published .published-card button{border-radius:12px;background:#606c38;color:#fff}
.admin-people{margin-top:18px;background:#f7f1e6;border-color:#c7b99f;border-radius:20px!important}.admin-people h2{margin:0;color:#303a22}.people-list{max-height:220px;overflow:auto;margin-top:12px}.person-row{padding:10px 12px;border-top:1px solid #d8ccb7;color:#4f4d3f}
.admin-sidebar .admin-people{margin-top:18px;padding-top:16px;border-top:1px solid #ffffff22}.admin-sidebar .admin-people h2{font-size:18px;color:#c5e98f;margin:0}.admin-sidebar .admin-people small{color:#c8ddd0}.admin-sidebar .people-list{max-height:220px;overflow-y:auto;margin-top:8px}.admin-sidebar .person-row{padding:9px 0;border-top:1px solid #ffffff22;color:#fff}.admin-sidebar .person-row:first-child{margin-top:4px}.admin-sidebar .admin-people .muted{color:#c8ddd0}
/* sidebar refinement */
.admin-page>.admin-sidebar{background:#606c38!important;color:#fff!important;border-radius:24px!important;padding:24px!important;box-shadow:0 10px 0 rgba(96,108,56,.14)}.admin-sidebar strong{font-size:20px!important;color:#e8dcc7!important;letter-spacing:-.03em}.admin-sidebar>div:not(.admin-people){border-top:1px solid rgba(232,220,199,.25)!important;padding:14px 0!important}.admin-sidebar>div:not(.admin-people) small{color:#e8dcc7!important;font-size:13px}.admin-sidebar>div:not(.admin-people) b{color:#fff!important;font-size:32px!important;font-variant-numeric:tabular-nums}.admin-sidebar .admin-people{background:rgba(232,220,199,.12)!important;border:1px solid rgba(232,220,199,.28)!important;border-radius:18px!important;padding:16px!important;margin-top:20px!important}.admin-sidebar .admin-people h2{font-size:18px!important;color:#e8dcc7!important}.admin-sidebar .admin-people small{color:#d4b895!important}.admin-sidebar .people-list{max-height:180px!important;overflow-y:auto!important;margin-top:10px!important;padding-right:4px}.admin-sidebar .person-row{border-top:1px solid rgba(232,220,199,.2)!important;padding:10px 0!important;color:#fff!important}.admin-sidebar .person-row:first-child{border-top:0!important}.admin-sidebar .people-list::-webkit-scrollbar{width:5px}.admin-sidebar .people-list::-webkit-scrollbar-thumb{background:#d4b895;border-radius:10px}
.admin-sidebar #usersLink{color:#fff;text-decoration:underline;text-decoration-color:#d4b895;text-underline-offset:4px}.roster-page{max-width:900px;margin:20px auto}.roster-page table{background:#fffdf8;border-radius:16px;overflow:hidden}.roster-page th{background:#e8dcc7;color:#3d4a27}.roster-page td,.roster-page th{padding:14px 16px}
/* file picker refinement */
.admin-card input[type=file]{height:58px;padding:8px 12px;background:#eef0e5;border:1px dashed #8b9d83;border-radius:16px;color:#4f4d3f;line-height:40px}.admin-card input[type=file]::file-selector-button{margin-right:12px;border:1px solid #606c38;border-radius:10px;background:#606c38;color:#fff;font:inherit;font-weight:700;padding:9px 15px;cursor:pointer;transition:background .25s ease,transform .25s ease}.admin-card input[type=file]::file-selector-button:hover{background:#4f5a2e;transform:translateY(-1px)}.admin-card input[type=file]:focus-visible{outline:3px solid #d4b895;outline-offset:2px}
.admin-card label:has(input[type=file]){margin-bottom:18px}.admin-card input[type=file]{display:block;height:54px;line-height:normal;padding:6px 10px;overflow:hidden}.admin-card input[type=file]::file-selector-button{vertical-align:middle;margin-top:0;margin-bottom:0;padding:8px 14px;line-height:1.2}.admin-card label:has(input[type=file]) + label{margin-top:2px}
.question-manager{max-width:1000px;margin:20px auto}.question-manager input{margin:18px 0 10px}.question-list{max-height:65vh;overflow:auto}.question-row{display:flex;align-items:center;justify-content:space-between;gap:16px;border-top:1px solid #d8ccb7;padding:16px 0}.question-row strong{display:block}.question-row small{display:block;margin-top:5px}.danger{background:#a84d3d!important;border-radius:12px!important;padding:8px 14px!important}
.admin-sidebar a{color:inherit;text-decoration:underline;text-decoration-color:#d4b895;text-underline-offset:4px}
.question-content{flex:1;min-width:0}.question-actions{display:flex;gap:8px;align-items:center}.question-editor{margin-top:14px;padding:16px;background:#eef0e5;border:1px solid #c7b99f;border-radius:14px}.question-editor textarea{display:block;width:100%;min-height:72px;resize:vertical;font:inherit;border:1px solid #b9b59f;border-radius:10px;padding:10px;background:#fffdf8;color:inherit}.question-editor label{margin-bottom:10px}.question-editor .save-question{background:#606c38;border-radius:10px}.question-row{align-items:flex-start!important}
.option-editor,.answer-editor{display:grid;gap:8px;margin:0 0 12px}.option-line{display:flex;align-items:center;gap:8px;margin:0!important}.option-line span{width:28px;height:28px;display:grid;place-items:center;border-radius:50%;background:#606c38;color:#fff}.option-line input{margin:0!important}.answer-editor{padding:10px 12px;background:#fffdf8;border:1px solid #c7b99f;border-radius:12px}.answer-editor label{margin:0!important;font-weight:500}
.answer-editor label{display:flex!important;align-items:center;gap:10px;padding:10px 12px;border:1px solid transparent;border-radius:10px;cursor:pointer}.answer-editor label:hover{background:#eef0e5;border-color:#c7b99f}.answer-editor input[type=radio],.answer-editor input[type=checkbox]{display:inline-block!important;width:18px!important;height:18px!important;min-width:18px;margin:0!important;accent-color:#606c38}.option-line input{width:100%!important;min-width:0}.option-line span{flex:0 0 28px}
.question-editor select[data-field=type]{display:block;width:100%;padding:10px 12px;border:1px solid #b9b59f;border-radius:10px;background:#fffdf8;color:inherit;font:inherit}