:root{--ink:#183d36;--muted:#687c76;--accent:#197660;--light:#e6f0eb;--paper:#f6f7f3;--line:#dce5df;--gold:#ba7e30;--white:#fff;--primary-color:#183d36;--secondary-color:#197660;--border-color:#dce5df}*{box-sizing:border-box}body{margin:0;background:var(--paper);font:15px/1.7 -apple-system,BlinkMacSystemFont,'PingFang SC','Microsoft YaHei',sans-serif;color:var(--ink)}a{color:var(--accent);text-decoration:none}button,input,select,textarea{font:inherit}button,a,input,select,textarea,summary{outline-offset:4px}button{cursor:pointer}button,.btn{border:1px solid var(--line);background:white;color:var(--ink);padding:9px 16px;border-radius:9px;display:inline-block}button:hover,.btn:hover{background:var(--light)}.primary,.btn-primary{color:white;background:var(--accent);border-color:var(--accent)}.primary:hover,.btn-primary:hover{background:#125e4c}nav{background:#fff;border-bottom:1px solid var(--line)}.nav-container{max-width:1480px;margin:auto;min-height:76px;padding:0 32px;display:flex;align-items:center;justify-content:space-between;gap:28px}.nav-brand{display:flex;gap:11px;align-items:center;font-weight:750;color:var(--ink);font-size:18px}.brand-mark{display:grid;place-items:center;background:var(--ink);color:white;border-radius:10px;width:37px;height:39px;font:24px Georgia,serif}.brand-sub{display:block;color:var(--muted);font:10px/1.2 system-ui;letter-spacing:2.8px;margin-top:3px}.nav-links{display:flex;list-style:none;gap:5px;padding:0;margin:0}.nav-links a{display:block;font-size:14px;color:var(--muted);padding:9px 13px;border-radius:7px}.nav-links a:hover,.nav-links a[aria-current]{color:var(--accent);background:var(--light)}main,.container{max-width:1400px;margin:auto;padding:32px}.eyebrow{font-size:11px;letter-spacing:2px;font-weight:700;color:var(--accent);text-transform:uppercase}.page-heading{display:flex;justify-content:space-between;gap:24px;align-items:center;margin:4px 0 28px}.page-heading h1{font-size:30px;letter-spacing:-1px;margin:6px 0}.page-heading p{margin:0;color:var(--muted)}.pill,.badge{display:inline-block;font-size:11px;padding:3px 9px;border-radius:5px;background:var(--light);color:var(--accent);white-space:nowrap}.pill.warm{background:#fbefdc;color:#875a20}.hero-panel{display:grid;grid-template-columns:1.05fr 1fr;gap:42px;background:var(--ink);color:white;padding:44px;border-radius:18px;margin-bottom:24px;align-items:center}.hero-panel .eyebrow{color:#a8c8b9}.hero-panel h1{font-size:40px;line-height:1.4;letter-spacing:-1px;margin:16px 0}.hero-panel p{color:#c5d6ce;max-width:470px}.hero-panel .btn{margin:16px 10px 0 0;background:#e8c689;color:var(--ink);border:0}.hero-panel .btn.alt{background:#31534b;color:white}.hero-chart{background:#fff;border-radius:12px;padding:22px;color:var(--ink);box-shadow:0 12px 32px #0f2b2533}.hero-chart h3{margin:0}.hero-chart .chart-figure{border:0;padding:0;margin:0}.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:24px 0 34px}.stat{border:1px solid var(--line);background:white;border-radius:12px;padding:18px 24px;display:flex;gap:17px;align-items:center}.stat strong{font-size:31px;font-weight:650}.stat span{font-size:12px;color:var(--muted)}.section-heading{display:flex;justify-content:space-between;align-items:center;margin:28px 0 14px}.section-heading h2{font-size:21px;margin:0}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.card,.feature-card{background:white;border:1px solid var(--line);border-radius:13px;padding:25px;margin-bottom:20px}.feature-card h3{margin:13px 0 8px;font-size:19px}.feature-card p{color:var(--muted);font-size:14px}.card h2{font-size:23px}.card h3{margin-top:26px}.muted{color:var(--muted)}.small{font-size:12px}.notice{border-left:3px solid #cda765;background:#fcf4e5;padding:12px 18px;border-radius:0 8px 8px 0;font-size:13px;color:#77562c;margin:18px 0}.toolbar{background:white;border:1px solid var(--line);border-radius:12px;padding:16px;display:flex;gap:16px;align-items:end;flex-wrap:wrap;margin-bottom:20px}.field{display:grid;gap:5px}.field label{font-size:11px;color:var(--muted)}.field.search{flex:1;min-width:190px}input,select{border:1px solid var(--line);border-radius:7px;background:#fbfcfa;padding:9px 12px;color:var(--ink);width:100%;min-width:0}.segmented{display:flex;background:var(--paper);padding:3px;border-radius:8px}.segmented button{border:0;background:transparent;font-size:13px;padding:8px 15px}.segmented button[aria-pressed=true]{color:white;background:var(--accent)}.workspace{display:grid;grid-template-columns:302px minmax(0,1fr);gap:22px;align-items:start}.question-list{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;position:sticky;top:18px;max-height:calc(100vh - 40px);overflow-y:auto}.list-heading{padding:16px 18px;font-size:12px;border-bottom:1px solid var(--line);color:var(--muted)}.question-item{display:block;text-align:left;width:100%;border-radius:0;padding:17px 18px;border:0;border-bottom:1px solid #eef1ed;border-left:3px solid transparent;background:white;white-space:normal}.question-item.selected{border-left-color:var(--accent);background:#edf4ef}.question-item .item-meta{display:flex;align-items:center;justify-content:space-between;margin-bottom:6px;font-size:11px;color:var(--muted)}.question-item strong{display:block;font-weight:600;line-height:1.6}.empty{padding:26px;text-align:center;color:var(--muted)}.question-detail{background:white;border:1px solid var(--line);border-radius:13px;min-width:0;overflow:hidden}.detail-header{padding:26px 30px;border-bottom:1px solid var(--line);background:linear-gradient(115deg,#f4f8f2,#fff)}.detail-header h2{font-size:26px;line-height:1.5;margin:12px 0}.detail-meta{display:flex;flex-wrap:wrap;gap:8px}.detail-body{padding:26px 30px}.detail-body h3{font-size:17px;margin:25px 0 12px}.detail-body h3:first-child{margin-top:0}.directions{background:#f7f8f4;border:1px solid #e8ece5;border-radius:9px;padding:20px 24px;font-family:Georgia,'Times New Roman',serif;font-size:17px;line-height:1.85;white-space:pre-wrap;overflow-wrap:anywhere}.directions ol{padding-left:25px;margin:8px 0}.mail{background:#fff;border-left:3px solid #c7d9ce;margin:16px 0;padding:16px 22px;white-space:pre-line}.chart-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,310px),1fr));gap:16px}.chart-figure{margin:16px 0;border:1px solid var(--line);border-radius:10px;padding:20px;min-width:0;background:#fff}.chart-figure h4{margin:0 0 5px;font-size:15px}.chart-figure .unit{font-size:11px;color:var(--muted)}.chart-svg{display:block;width:100%;height:auto;overflow:visible;margin:12px 0}.chart-svg text{font-family:-apple-system,BlinkMacSystemFont,'PingFang SC',sans-serif}.legend{display:flex;gap:9px 16px;flex-wrap:wrap;list-style:none;padding:0;margin:10px 0;font-size:12px}.legend li{display:flex;gap:6px;align-items:center}.legend i{width:9px;height:9px;border-radius:3px;display:inline-block}.chart-note{font-size:11px;color:var(--muted);margin:10px 0}.chart-figure details{font-size:12px;border-top:1px dashed var(--line);padding-top:10px}.chart-figure summary{cursor:pointer;color:var(--accent)}.table-wrap{overflow-x:auto;width:100%}table{border-collapse:collapse;width:100%;font-size:13px;margin:14px 0}th,td{border-bottom:1px solid var(--line);text-align:left;padding:11px 12px;overflow-wrap:anywhere}th{background:#edf3ef;font-weight:600}caption{text-align:left;color:var(--muted);font-size:12px;padding:5px}.legend-value{margin-left:auto;font-variant-numeric:tabular-nums}.original{background:#f4f5f0;border:1px solid var(--line);padding:15px;border-radius:10px;margin:18px 0}.original-head{display:flex;align-items:center;gap:15px;justify-content:space-between;margin-bottom:12px}.original img{display:block;width:100%;height:auto;max-width:850px;margin:auto;border-radius:4px}.original a{display:block}.source-links{display:flex;flex-wrap:wrap;gap:10px;font-size:12px;margin:12px 0}.reason{background:#edf4ef;padding:18px 22px;border-radius:9px;margin-top:22px}.reason h4{margin:0 0 7px}.reason p{font-size:13px;margin:6px 0}.reason a{font-size:12px;text-decoration:underline}.actions{display:flex;gap:8px;flex-wrap:wrap;margin:18px 0}.actions button{font-size:12px}.practice{border-top:1px solid var(--line);margin-top:28px;padding-top:22px}.practice-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.timer{font-size:20px;font-variant-numeric:tabular-nums}.practice textarea{width:100%;min-height:250px;resize:vertical;border:1px solid var(--line);border-radius:10px;padding:18px;background:#fffefa;font-family:Georgia,'Times New Roman',serif;font-size:17px;line-height:1.85;color:var(--ink)}.practice-status{display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap;font-size:12px;color:var(--muted);margin:10px 0}.scene{width:100%;height:auto;border:1px solid var(--line);border-radius:10px;background:#f9faf6}.scene text{font-family:'PingFang SC',sans-serif}.trend-strip{display:grid;grid-template-columns:repeat(12,1fr);gap:7px;margin:18px 0}.trend-cell{background:#e4ede8;text-align:center;border-radius:6px;padding:11px 3px;font-size:10px}.trend-cell.new{background:#cfdfb8}.trend-cell b{display:block;font-size:12px}.resource-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.resource-links a{background:#f2f5ef;border:1px solid var(--line);border-radius:8px;padding:18px}.resource-links strong{display:block}.resource-links span{font-size:12px;color:var(--muted)}.hero{max-width:1400px;padding:32px;margin:auto}.hero h1{font-size:30px;margin:8px 0}.hero p{color:var(--muted)}footer{max-width:1400px;padding:28px 32px;margin:20px auto 0;border-top:1px solid var(--line);font-size:12px;color:var(--muted);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}.highlight-box{padding:20px;border-left:3px solid var(--accent);background:#edf4ef;margin:20px 0}.styled-list{padding-left:22px}.styled-list li{margin:8px 0}code{font:14px ui-monospace,monospace;background:#f2f5ef;padding:3px 6px}.no-js{padding:24px}.print-only{display:none}@media(min-width:1400px){.detail-body{padding:30px 38px}}@media(max-width:1050px){.nav-container{padding:16px 22px;flex-wrap:wrap;gap:12px}.nav-links{flex-wrap:wrap}.hero-panel{padding:30px;gap:25px}.hero-panel h1{font-size:32px}.workspace{grid-template-columns:250px minmax(0,1fr)}.stat{padding:14px}.stat strong{font-size:26px}.grid{gap:12px}}@media(max-width:760px){main,.container{padding:20px 16px}.nav-container{padding:14px 16px}.nav-brand{font-size:16px}.nav-links{gap:2px}.nav-links a{font-size:12px;padding:7px 10px}.page-heading{align-items:start;flex-direction:column;gap:10px}.page-heading h1{font-size:26px}.hero-panel{grid-template-columns:1fr;padding:26px;gap:24px}.hero-panel h1{font-size:29px}.stat-grid{grid-template-columns:repeat(2,1fr);gap:10px}.stat{padding:14px}.stat strong{font-size:27px}.grid{grid-template-columns:1fr}.workspace{grid-template-columns:1fr}.question-list{position:static;max-height:260px}.question-item{padding:12px 15px}.detail-header,.detail-body{padding:20px}.detail-header h2{font-size:23px}.directions{padding:16px;font-size:16px}.chart-figure{padding:14px}.resource-links{grid-template-columns:1fr}.trend-strip{grid-template-columns:repeat(6,1fr)}footer{padding:22px 16px}.hero{padding:20px 16px}.segmented button{padding:8px 12px}.toolbar{gap:12px}.field.search{flex-basis:100%}}@media print{nav,.question-list,.toolbar,.actions,.practice,.page-heading,footer{display:none!important}main{padding:0}.workspace{display:block}.question-detail{border:0}.detail-body,.detail-header{padding:8px}.chart-figure{break-inside:avoid}.original img{max-height:900px;width:auto;max-width:100%}.print-only{display:block}}

/* Tablet reading and touch controls, verified at 600–1280 CSS pixels. */
input,select{font-size:16px;min-height:44px}
.nav-links a,.segmented button,.actions button,.practice-head button{min-height:44px;display:inline-flex;align-items:center;justify-content:center}
.chart-figure summary{min-height:44px;padding:9px 0}
@media(max-width:1050px){.chart-grid{grid-template-columns:minmax(0,1fr)}}
@media(max-width:900px){
 .workspace{grid-template-columns:minmax(0,1fr)}
 .question-list{position:static;max-height:260px;overscroll-behavior-y:contain}
 .hero-panel{grid-template-columns:minmax(0,1fr)}
 .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 .grid{grid-template-columns:minmax(0,1fr)}
}
@media(max-width:760px){
 .chart-svg{min-width:480px}
 .chart-graphic{overflow-x:auto;max-width:100%}
 .chart-graphic-hint{display:block!important}
}
@media print{.chart-graphic{overflow:visible}.chart-svg{min-width:0}.chart-graphic-hint{display:none!important}}
.reference-panel,.review-panel{margin-top:30px;padding:24px;border:1px solid var(--line,#dce5db);border-radius:14px;background:#f8faf5}
.reference-panel summary,.review-panel summary,.source-transcript summary{cursor:pointer;min-height:44px;padding:10px 0;font-weight:600}
.reference-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:18px 0}
.reference-card{min-width:0;padding:20px;border:1px solid #dce5db;border-radius:12px;background:#fff}
.reference-card h4{margin:12px 0}.reference-example{font-family:Georgia,serif;line-height:1.8;overflow-wrap:anywhere}
.reference-card button,.review-panel button{min-height:44px}.review-fields{display:grid;gap:18px;margin:20px 0}
.review-fields select{width:100%;max-width:100%}.review-check{display:flex;align-items:center;gap:10px;min-height:44px}
.review-check input{min-height:24px;width:24px;height:24px;flex-shrink:0}
.review-panel textarea{width:100%;font-size:16px;min-height:220px;line-height:1.7;padding:14px}
.review-score{display:flex;align-items:center;gap:20px;flex-wrap:wrap;padding:20px 0;color:#217763}
.review-score strong{font:42px Georgia,serif}.review-score small{font-size:22px}
.sentence-check{border-top:1px solid #dce5db}.sentence-check p{overflow-wrap:anywhere}
button:disabled{opacity:.5;cursor:not-allowed}.source-transcript{border-bottom:1px solid #dce5db;padding:10px 0}
@media(max-width:900px){.reference-grid{grid-template-columns:minmax(0,1fr)}.reference-panel,.review-panel{padding:18px}}
@media print{.reference-panel,.review-panel{break-inside:auto}.review-fields,.review-check,#review-prompt-area{display:none}}

/* Random practice generator, shared with the existing writing and review workspace. */
.generator-toolbar .field{flex:1;min-width:140px}.generator-toolbar button,.replay-toolbar button{min-height:44px}
.generator-status{min-height:24px;margin:0 0 16px;color:var(--accent);overflow-wrap:anywhere}
.question-code{margin-top:16px;max-width:540px}.question-code label{display:block;font-size:12px;color:var(--muted);margin-bottom:4px}
.question-code input{font:14px ui-monospace,monospace;min-height:44px}.random-empty{padding:64px 28px;text-align:left;min-height:360px}.random-empty h2{font-size:28px}
@media(min-width:1051px) and (max-width:1280px){.nav-container{flex-wrap:wrap;gap:10px;padding-top:14px;padding-bottom:14px}.nav-links{flex-wrap:wrap}}
@media(max-width:600px){.generator-toolbar .field{min-width:120px}.generator-toolbar button{width:100%}.replay-toolbar .search{min-width:100%}.random-empty{padding:38px 20px}}
@media print{.generator-status,.question-code{break-inside:avoid}.random-empty{display:none}}

body[data-page="random"] .chart-grid{grid-template-columns:minmax(0,1fr)}
.random-next-actions{margin-bottom:0}.random-next-actions button{min-height:44px}
@media print{.random-next-actions{display:none!important}}

/* ---- 本机数据页 ---- */
.danger-zone{border-color:#e6c6c2;background:#fdf9f8}
.danger-btn{color:#9d2f2b;border-color:#e2bdb8;background:#fff}
.danger-btn:hover{background:#fbeceb}
.danger-link{color:#9d2f2b;border:1px solid transparent;background:transparent;padding:5px 9px;font-size:12px}
.danger-link:hover{background:#fbeceb}
.row-actions{display:flex;gap:6px;white-space:nowrap;flex-wrap:wrap}
.row-actions button{font-size:12px;padding:5px 10px}
.data-actions{display:flex;gap:8px;flex-wrap:wrap}
@media(max-width:600px){.row-actions{flex-direction:column;gap:4px}}

/* 移动端导航：9 个入口改为单行横向滚动，避免占掉三行高度 */
@media(max-width:760px){
  .nav-links{flex-wrap:nowrap;overflow-x:auto;width:100%;gap:2px;-webkit-overflow-scrolling:touch;scrollbar-width:none}
  .nav-links::-webkit-scrollbar{display:none}
  .nav-links a{white-space:nowrap;flex:0 0 auto}
}