/* ==========================================================================
   IELTS Writing Studio · 样式
   纸感底色 + 墨色文字，和「雅思作文电子版」同一套色板
   ========================================================================== */
:root{
  --ink:#1a1a1a;
  --ink-soft:#3d4450;
  --muted:#6b7280;
  --line:#e3e5e8;
  --line-strong:#d3d6db;
  --accent:#0f4c81;
  --accent-soft:#eaf1f8;
  --bg:#fbfaf7;
  --paper:#ffffff;
  --good:#2f7d5d;
  --good-soft:#e9f5ef;
  --warn:#b45309;
  --warn-soft:#fdf3e3;
  --bad:#b3261e;
  --bad-soft:#fdeceb;
  --radius:10px;
  --shadow:0 1px 2px rgba(16,24,40,.04), 0 8px 24px -12px rgba(16,24,40,.18);
  --ui:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --serif:Georgia,"Times New Roman","Songti SC","Noto Serif SC",serif;
  --mono:"SF Mono",ui-monospace,Menlo,Consolas,"Courier New",monospace;
  --topbar:58px;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);font:15px/1.6 var(--ui);
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{margin:0;line-height:1.35;font-weight:700}
p{margin:0}
button{font:inherit;color:inherit;cursor:pointer}
::selection{background:#cfe2f3}

/* ---------------- 顶栏 ---------------- */
.topbar{
  position:sticky;top:0;z-index:40;height:var(--topbar);
  display:flex;align-items:center;gap:22px;padding:0 20px;
  background:rgba(251,250,247,.92);backdrop-filter:saturate(160%) blur(8px);
  border-bottom:1px solid var(--line);
}
.brand{display:flex;align-items:center;gap:10px;color:inherit;text-decoration:none;flex:0 0 auto}
.brand:hover{text-decoration:none}
.brand-mark{
  width:30px;height:30px;border-radius:8px;background:var(--accent);color:#fff;
  display:grid;place-items:center;font:700 16px/1 var(--serif);letter-spacing:.02em;
}
.brand-text{display:flex;flex-direction:column;font-weight:700;font-size:14.5px;letter-spacing:.01em}
.brand-text em{font:400 11px/1.4 var(--ui);color:var(--muted);font-style:normal;letter-spacing:.02em}
.nav{display:flex;gap:4px;flex:1 1 auto}
.nav a{
  padding:6px 11px;border-radius:7px;color:var(--ink-soft);font-size:13.5px;text-decoration:none;
}
.nav a:hover{background:#f0efea;text-decoration:none}
.nav a.active{background:var(--accent);color:#fff}
.topbar-right{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.who{
  border:1px solid var(--line-strong);background:var(--paper);border-radius:999px;
  padding:5px 12px;font-size:12.5px;color:var(--ink-soft);max-width:150px;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.who:hover{border-color:var(--accent);color:var(--accent)}

/* ---------------- 通用 ---------------- */
.app{max-width:1040px;margin:0 auto;padding:30px 22px 96px}
.muted{color:var(--muted)}
.small{font-size:12.5px}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
  border:1px solid var(--line-strong);background:var(--paper);border-radius:8px;
  padding:9px 16px;font-size:14px;color:var(--ink);transition:.15s;white-space:nowrap;
}
.btn:hover{border-color:#b9bec6;background:#fcfcfb}
.btn:active{transform:translateY(1px)}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none}
.btn-primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn-primary:hover{background:#0d4373;border-color:#0d4373}
.btn-ghost{border-color:transparent;background:transparent;color:var(--muted)}
.btn-ghost:hover{background:#f0efea;color:var(--ink)}
.btn-sm{padding:6px 11px;font-size:12.5px}
.btn-danger{color:var(--bad);border-color:#f0c9c6}
.btn-danger:hover{background:var(--bad-soft)}
.chip{
  display:inline-flex;align-items:center;gap:5px;border:1px solid var(--line);
  background:#fbfaf8;border-radius:999px;padding:3px 9px;font-size:11.5px;color:var(--ink-soft);
}
.chip.accent{border-color:#cfe0ef;background:var(--accent-soft);color:var(--accent)}
.chip.good{border-color:#c6e3d5;background:var(--good-soft);color:var(--good)}
.chip.warn{border-color:#f1dcb8;background:var(--warn-soft);color:var(--warn)}
.divider{height:1px;background:var(--line);border:0;margin:22px 0}
.empty{padding:46px 20px;text-align:center;color:var(--muted)}
.empty strong{display:block;color:var(--ink);margin-bottom:6px;font-size:15px}

/* ---------------- 首页 ---------------- */
.hero{padding:10px 0 22px}
.hero h1{font:700 30px/1.3 var(--serif);letter-spacing:.01em}
.hero p.lead{color:var(--muted);margin-top:8px;font-size:14.5px;max-width:620px}
.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:22px 0 26px}
.stat{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px}
.stat b{display:block;font:700 24px/1.2 var(--serif);letter-spacing:.01em}
.stat span{font-size:12px;color:var(--muted)}
.section-head{display:flex;align-items:baseline;justify-content:space-between;margin:30px 0 12px}
.section-head h2{font-size:15px;letter-spacing:.02em}
.section-head a{font-size:12.5px}
.today{display:grid;grid-template-columns:1.35fr .65fr;gap:14px}
.today-card{padding:20px 22px;border-left:3px solid var(--accent)}
.today-card .eyebrow{font:600 11px/1 var(--ui);letter-spacing:.16em;text-transform:uppercase;color:var(--accent)}
.today-card h3{font:700 18px/1.5 var(--serif);margin:9px 0 8px}
.today-card .topic{color:var(--ink-soft);font:15px/1.75 var(--serif);max-height:5.2em;overflow:hidden}
.today-side{display:flex;flex-direction:column;gap:10px}
.quick{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:13px 16px;
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);color:inherit;font-size:13.5px}
.quick:hover{border-color:var(--accent);text-decoration:none}
.quick span.muted{font-size:12px}

/* ---------------- 题库 ---------------- */
.page-head{margin:6px 0 20px}
.page-head h1{font:700 24px/1.35 var(--serif)}
.page-head p{color:var(--muted);font-size:13.5px;margin-top:5px}
.filters{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 20px}
.seg{display:inline-flex;background:#f1efe9;border-radius:8px;padding:3px;gap:2px}
.seg button{
  border:0;background:transparent;border-radius:6px;padding:6px 13px;font-size:12.5px;color:var(--muted);
}
.seg button.on{background:var(--paper);color:var(--ink);box-shadow:0 1px 2px rgba(0,0,0,.06);font-weight:600}
.book-block{margin-bottom:26px}
.book-title{display:flex;align-items:center;gap:10px;margin:0 0 8px;font-size:13px;color:var(--muted)}
.book-title::after{content:"";flex:1;height:1px;background:var(--line)}
.task-list{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.task-row{
  display:grid;grid-template-columns:56px minmax(0,1fr) auto auto 46px;gap:14px;align-items:center;
  padding:11px 15px;border-bottom:1px solid var(--line);color:inherit;text-decoration:none;
}
.book-nav{display:flex;gap:6px;flex-wrap:wrap;margin:0 0 18px}
.book-nav a,.book-chip{
  font-size:12px;border:1px solid var(--line);border-radius:999px;padding:4px 10px;
  color:var(--muted);text-decoration:none;background:var(--paper);font-family:inherit;
}
.book-nav a:hover,.book-chip:hover{border-color:var(--accent);color:var(--accent);text-decoration:none}
.book-block{scroll-margin-top:70px}
.task-row.compact{grid-template-columns:56px minmax(0,1fr) auto 46px}
.task-row:last-child{border-bottom:0}
.task-row:hover{background:#fcfbf8;text-decoration:none}
.task-row .no{font:600 11px/1 var(--ui);letter-spacing:.1em;color:var(--muted)}
.task-row .main{min-width:0}
.task-row .main b{display:block;font-size:14px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.task-row .main .type{font-size:12px;color:var(--muted);margin-top:2px;display:block}
.task-row .main .snippet{
  display:block;font-size:12px;line-height:1.45;color:var(--muted);margin-top:3px;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:56ch;
}
.task-row .meta{font-size:12px;color:var(--muted);text-align:right;white-space:nowrap}
.task-row .tag{font:600 10.5px/1 var(--ui);letter-spacing:.08em;border:1px solid var(--line-strong);
  border-radius:4px;padding:4px 6px;color:var(--ink-soft);white-space:nowrap}
.task-row .tag.fig{border-color:#cfe0ef;color:var(--accent);background:var(--accent-soft)}
.task-row .best{font:700 14px/1 var(--serif);color:var(--good);min-width:34px;text-align:right}
.task-row .best.mid{color:var(--warn)}
.task-row .best.bad{color:var(--bad)}
.task-row .best.none{color:#c9ccd1;font-weight:400;font-size:12px}

/* ---------------- 练习页 ---------------- */
body[data-route="practice"]{overflow:hidden}
body[data-route="practice"] .app{max-width:none;margin:0;padding:0;height:calc(100dvh - var(--topbar))}
body[data-route="practice"] .site-foot{display:none}
body.focus-mode .practice{grid-template-columns:1fr}
body.focus-mode .prompt-pane{display:none}
.practice{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);height:100%}
.prompt-pane{border-right:1px solid var(--line);overflow-y:auto;padding:26px 30px 40px;background:var(--bg)}
.write-pane{display:flex;flex-direction:column;min-width:0;background:var(--paper)}
.crumb{font-size:12px;color:var(--muted);display:flex;gap:6px;align-items:center;margin-bottom:14px}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--accent)}
.crumb .sep{opacity:.5}
.prompt-pane .eyebrow{font:600 11px/1 var(--ui);letter-spacing:.16em;text-transform:uppercase;color:var(--accent)}
.prompt-pane h1{font:700 21px/1.45 var(--serif);margin:10px 0 6px}
.prompt-meta{display:flex;flex-wrap:wrap;gap:6px;margin:10px 0 18px}
.prompt-body{border-top:1px solid var(--line);padding-top:18px}
.prompt-body .lead{font:italic 14px/1.7 var(--serif);color:var(--muted);margin-bottom:14px}
.prompt-body .intro{font-size:13px;color:var(--muted);margin-bottom:10px}
.prompt-topic{font:17.5px/1.85 var(--serif);background:var(--paper);border:1px solid var(--line);
  border-left:3px solid var(--accent);border-radius:6px;padding:18px 20px;margin-bottom:14px;white-space:pre-wrap}
.prompt-body .instr{font-size:14px;color:var(--ink-soft);margin-bottom:6px}
.prompt-body .words{font-size:12.5px;color:var(--muted)}
.figure{margin:18px 0 6px;background:var(--paper);border:1px solid var(--line);border-radius:8px;padding:12px}
.figure img{display:block;width:100%;height:auto;border-radius:4px;cursor:zoom-in}
.figure figcaption{font-size:12px;color:var(--muted);text-align:center;margin-top:9px}
.hint-box{margin-top:20px;border:1px dashed var(--line-strong);border-radius:8px;padding:12px 14px;background:#fdfcf9}
.hint-box summary{cursor:pointer;font-size:12.5px;color:var(--ink-soft);font-weight:600}
.hint-box ol{margin:9px 0 0;padding-left:18px;font-size:12.5px;color:var(--muted);line-height:1.8}

.editor-bar{display:flex;align-items:center;gap:12px;padding:10px 18px;border-bottom:1px solid var(--line);min-height:52px}
.timer{display:flex;align-items:center;gap:8px;font-family:var(--mono);font-variant-numeric:tabular-nums}
.timer .digits{font-size:19px;font-weight:600;letter-spacing:.02em;min-width:70px}
.timer .ring{width:18px;height:18px;border-radius:50%;border:2px solid var(--accent);border-top-color:transparent;animation:spin 3s linear infinite;display:none}
.timer.running .ring{display:block}
.timer.warn .digits{color:var(--warn)}
.timer.danger .digits{color:var(--bad);animation:pulse 1s ease-in-out infinite}
.timer.idle .digits{color:var(--muted)}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes pulse{50%{opacity:.45}}
.spacer{flex:1}
.icon-btn{border:1px solid transparent;background:transparent;border-radius:7px;padding:5px 8px;font-size:12.5px;color:var(--muted)}
.icon-btn:hover{background:#f2f1ec;color:var(--ink)}
.icon-btn.on{background:var(--accent-soft);color:var(--accent);border-color:#cfe0ef}
.timer-track{height:2px;background:var(--line)}
.timer-fill{height:100%;width:100%;background:var(--accent);transition:width 1s linear}
.timer-fill.warn{background:var(--warn)}
.timer-fill.danger{background:var(--bad)}

.editor-wrap{position:relative;flex:1;min-height:0;display:flex}
#essay{
  flex:1;width:100%;border:0;outline:0;resize:none;padding:26px 30px 30px;
  font:18px/1.95 var(--serif);color:var(--ink);background:var(--paper);
  caret-color:var(--accent);
}
#essay::placeholder{color:#b6b2a8}
#essay:disabled{color:#9aa0a6}
.editor-veil{
  position:absolute;inset:0;display:grid;place-items:center;padding:24px;
  background:rgba(251,250,247,.86);backdrop-filter:blur(2px);text-align:center;z-index:5;
}
.editor-veil .veil-card{max-width:400px}
.editor-veil h2{font:700 19px/1.5 var(--serif);margin-bottom:6px}
.editor-veil p{color:var(--muted);font-size:13px;margin-bottom:16px}
.editor-veil .veil-actions{display:flex;gap:9px;justify-content:center;flex-wrap:wrap}

.editor-foot{display:flex;align-items:center;gap:12px;padding:11px 18px;border-top:1px solid var(--line);background:#fcfbf8}
.wordcount{font-size:12.5px;color:var(--muted)}
.wordcount b{color:var(--ink);font-family:var(--mono);font-size:13.5px}
.wordcount.short b{color:var(--warn)}
.wordcount.ok b{color:var(--good)}
.save-dot{width:6px;height:6px;border-radius:50%;background:#c9ccd1;transition:background .3s}
.save-dot.ok{background:var(--good)}
.focus-note{font-size:12px;color:var(--muted);white-space:nowrap}

/* 提交 / 评分遮罩 */
.scrim{position:fixed;inset:0;z-index:80;background:rgba(26,26,26,.42);display:grid;place-items:center;padding:20px}
.grade-card{width:min(430px,100%);background:var(--paper);border-radius:14px;padding:26px 26px 22px;box-shadow:0 30px 60px -20px rgba(0,0,0,.4);text-align:center}
.grade-card h2{font:700 19px/1.4 var(--serif);margin-bottom:4px}
.grade-card .sub{color:var(--muted);font-size:12.5px;margin-bottom:18px}
.steps{text-align:left;margin:0 0 16px;padding:0;list-style:none}
.steps li{display:flex;align-items:flex-start;gap:10px;padding:7px 0;font-size:13px;color:#a3a7ad;transition:color .3s}
.steps li .dot{width:15px;height:15px;border-radius:50%;border:1.5px solid #d7dade;flex:0 0 auto;margin-top:2px;
  display:grid;place-items:center;font-size:9px;color:#fff}
.steps li.active{color:var(--ink)}
.steps li.active .dot{border-color:var(--accent);animation:pulse 1.2s infinite}
.steps li.done{color:var(--ink-soft)}
.steps li.done .dot{background:var(--good);border-color:var(--good)}
.grade-elapsed{font-family:var(--mono);font-size:12px;color:var(--muted)}
.spinner{width:26px;height:26px;border-radius:50%;border:2.5px solid var(--accent-soft);border-top-color:var(--accent);
  margin:0 auto 14px;animation:spin .9s linear infinite}

/* ---------------- 报告 ---------------- */
.report-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:18px}
.report-head .back{font-size:12.5px;color:var(--muted);display:inline-flex;gap:5px;margin-bottom:10px}
.report-head h1{font:700 23px/1.4 var(--serif)}
.report-head .meta{font-size:12.5px;color:var(--muted);margin-top:5px;display:flex;gap:12px;flex-wrap:wrap}
.report-actions{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}

.score-hero{display:grid;grid-template-columns:200px 1fr;gap:22px;padding:22px 24px}
.overall{display:flex;flex-direction:column;align-items:center;justify-content:center;
  border-right:1px solid var(--line);padding-right:20px}
.overall .num{font:700 56px/1 var(--serif);letter-spacing:-.01em}
.overall .label{font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin-bottom:8px}
.overall .band-desc{font-size:12.5px;color:var(--muted);text-align:center;margin-top:8px;max-width:170px}
.bands{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;align-content:center}
.band{border:1px solid var(--line);border-radius:9px;padding:11px 12px;background:#fdfcfa}
.band .k{font:600 11px/1 var(--ui);letter-spacing:.1em;color:var(--accent)}
.band .v{font:700 26px/1.2 var(--serif);margin:5px 0 1px}
.band .n{font-size:11px;color:var(--muted);height:2.9em;overflow:hidden}
.band .bar{height:3px;border-radius:2px;background:#ecebe6;margin-top:7px;overflow:hidden}
.band .bar i{display:block;height:100%;background:var(--accent);border-radius:2px}
.band.low .v{color:var(--warn)}
.band.low .bar i{background:var(--warn)}

.report-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:14px}
.panel{padding:18px 20px}
.panel h3{font-size:13.5px;letter-spacing:.02em;margin-bottom:11px;display:flex;align-items:center;gap:7px}
.panel h3 .idx{width:18px;height:18px;border-radius:5px;background:var(--accent-soft);color:var(--accent);
  display:grid;place-items:center;font-size:11px;font-weight:700}
.bullets{margin:0;padding-left:17px;font-size:13.5px;line-height:1.85;color:var(--ink-soft)}
.bullets li{margin-bottom:4px}
.summary{font:15.5px/1.85 var(--serif);color:var(--ink)}
.subhead{display:flex;align-items:center;gap:8px;font:600 11px/1 var(--ui);letter-spacing:.14em;text-transform:uppercase;
  color:var(--muted);margin:16px 0 7px}
.subhead::after{content:"";flex:1;height:1px;background:var(--line)}
.note-strip{
  display:flex;gap:9px;align-items:flex-start;font-size:12.5px;line-height:1.7;color:var(--warn);
  background:var(--warn-soft);border:1px solid #f1dcb8;border-radius:8px;padding:10px 13px;margin:0 0 14px;
}
.note-strip b{font-weight:600}
.note-strip.ok{color:var(--good);background:var(--good-soft);border-color:#c6e3d5}
.err-card[data-type="data"]{border-left-color:#c2410c}
.essay-review mark[data-type="data"]{background:#fdeee8;box-shadow:inset 0 -2px 0 #eba78f}
.side-list{display:flex;flex-direction:column;gap:9px;margin-top:14px}
.side-item{display:flex;gap:10px;font-size:13.5px;line-height:1.75;color:var(--ink-soft)}
.side-item i{flex:0 0 auto;width:6px;height:6px;border-radius:50%;margin-top:8px}
.side-item.good i{background:var(--good)}
.side-item.bad i{background:var(--warn)}

/* 错误清单 */
.err-toolbar{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:12px}
.err-toolbar button{border:1px solid var(--line);background:var(--paper);border-radius:999px;padding:4px 11px;font-size:12px;color:var(--muted)}
.err-toolbar button.on{background:var(--ink);border-color:var(--ink);color:#fff}
.err-list{display:flex;flex-direction:column;gap:10px}
.err-card{border:1px solid var(--line);border-left:3px solid var(--line-strong);border-radius:8px;padding:12px 14px;background:var(--paper);scroll-margin:80px}
.err-card[data-type="grammar"]{border-left-color:#c2410c}
.err-card[data-type="vocabulary"]{border-left-color:#7c3aed}
.err-card[data-type="collocation"]{border-left-color:#0e7490}
.err-card[data-type="spelling"]{border-left-color:#be123c}
.err-card[data-type="coherence"]{border-left-color:#1d4ed8}
.err-card[data-type="task"]{border-left-color:#b45309}
.err-card[data-type="punctuation"]{border-left-color:#4b5563}
.err-card.flash{animation:flash 1.2s ease-out}
@keyframes flash{0%{background:#fff7e0}100%{background:var(--paper)}}
.err-top{display:flex;align-items:center;gap:8px;margin-bottom:7px}
.err-type{font:600 10.5px/1 var(--ui);letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.err-quote{font-family:var(--serif);font-size:14.5px;color:var(--bad);text-decoration:line-through;text-decoration-color:#e3a29c;text-decoration-thickness:1px}
.err-fix{font-family:var(--serif);font-size:14.5px;color:var(--good);margin-top:5px}
.err-fix::before{content:"→ ";color:var(--muted)}
.err-issue{font-size:12.5px;color:var(--muted);margin-top:6px;line-height:1.7}

/* 全文对照 */
.essay-review{font:17px/2.05 var(--serif);white-space:pre-wrap;word-break:break-word}
.essay-review mark{border-radius:3px;padding:1px 1px;cursor:pointer;transition:filter .15s;background:#fdeceb;box-shadow:inset 0 -2px 0 #e8a49d}
.essay-review mark[data-type="grammar"]{background:#fdeceb;box-shadow:inset 0 -2px 0 #e8a49d}
.essay-review mark[data-type="vocabulary"]{background:#f3ecfd;box-shadow:inset 0 -2px 0 #c4a6f0}
.essay-review mark[data-type="collocation"]{background:#e6f6f9;box-shadow:inset 0 -2px 0 #8fd0dc}
.essay-review mark[data-type="spelling"]{background:#fdeaf0;box-shadow:inset 0 -2px 0 #eda3b8}
.essay-review mark[data-type="coherence"]{background:#e8effd;box-shadow:inset 0 -2px 0 #9fb6ee}
.essay-review mark[data-type="task"]{background:#fdf3e3;box-shadow:inset 0 -2px 0 #e5bd82}
.essay-review mark[data-type="punctuation"]{background:#f1f2f4;box-shadow:inset 0 -2px 0 #b9bdc4}
.essay-review mark:hover{filter:brightness(.96)}
.essay-review mark.hit{outline:2px solid var(--accent);outline-offset:1px}
.legend{display:flex;gap:14px;flex-wrap:wrap;font-size:11.5px;color:var(--muted);margin-bottom:12px}
.legend i{display:inline-block;width:10px;height:10px;border-radius:3px;margin-right:5px;vertical-align:-1px}

/* 升级句 */
.up-card{border:1px solid var(--line);border-radius:8px;padding:12px 14px;margin-bottom:9px;background:var(--paper)}
.up-card .orig{font:13.5px/1.75 var(--serif);color:var(--muted);text-decoration:line-through;text-decoration-color:#cfd3d8}
.up-card .better{font:14.5px/1.8 var(--serif);color:var(--ink);margin-top:5px}
.up-card .better::before{content:"→ ";color:var(--good)}
.up-card .why{font-size:12px;color:var(--muted);margin-top:6px}

.model-para{font:15.5px/1.95 var(--serif);background:#fdfcf9;border:1px solid var(--line);border-radius:8px;padding:14px 16px;white-space:pre-wrap}
.copy-row{display:flex;justify-content:flex-end;margin-top:8px}

.next-steps{margin:0;padding:0;list-style:none;counter-reset:step}
.next-steps li{counter-increment:step;position:relative;padding-left:26px;font-size:13.5px;line-height:1.8;margin-bottom:9px;color:var(--ink-soft)}
.next-steps li::before{content:counter(step);position:absolute;left:0;top:4px;width:17px;height:17px;border-radius:50%;
  background:var(--accent-soft);color:var(--accent);font:700 10.5px/17px var(--ui);text-align:center}

/* ---------------- 记录 ---------------- */
.rec-table{width:100%;border-collapse:collapse;font-size:13px}
.rec-table th{text-align:left;font:600 11px/1 var(--ui);letter-spacing:.1em;text-transform:uppercase;color:var(--muted);
  padding:9px 10px;border-bottom:1px solid var(--line)}
.rec-table td{padding:11px 10px;border-bottom:1px solid var(--line);vertical-align:middle}
.rec-table tr:last-child td{border-bottom:0}
.rec-table tbody tr{cursor:pointer}
.rec-table tbody tr:hover{background:#fcfbf8}
.rec-table .score{font:700 15px/1 var(--serif)}
.rec-table .score.good{color:var(--good)}
.rec-table .score.mid{color:var(--warn)}
.rec-table .score.bad{color:var(--bad)}
.trend{display:flex;align-items:flex-end;gap:4px;height:46px;margin-top:6px;justify-content:flex-start;overflow:hidden}
.trend i{flex:0 0 12px;width:12px;background:#d9e3ee;border-radius:2px 2px 0 0;min-height:2px}
.trend i.hi{background:var(--accent)}

/* ---------------- 弹层 ---------------- */
.modal{position:fixed;inset:0;z-index:90;background:rgba(26,26,26,.4);display:grid;place-items:center;padding:20px}
.modal-card{width:min(430px,100%);background:var(--paper);border-radius:12px;padding:22px 22px 18px;box-shadow:0 24px 50px -18px rgba(0,0,0,.4)}
.modal-card h2{font:700 17px/1.4 var(--serif);margin-bottom:4px}
.modal-card p.hint{font-size:12.5px;color:var(--muted);margin-bottom:14px}
.field{margin-bottom:12px}
.field label{display:block;font-size:12px;color:var(--muted);margin-bottom:5px}
.field input[type="text"],.field input[type="number"],.field select{
  width:100%;border:1px solid var(--line-strong);border-radius:7px;padding:9px 11px;font:14px var(--ui);background:#fff;
}
.field input:focus,.field select:focus{outline:2px solid var(--accent-soft);border-color:var(--accent)}
.modal-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:16px}
.submit-summary{display:flex;gap:9px;margin:2px 0 12px}
.submit-summary>div{flex:1;border:1px solid var(--line);border-radius:8px;padding:9px 8px;text-align:center;background:#fdfcfa}
.submit-summary b{display:block;font:700 18px/1.2 var(--serif)}
.submit-summary span{display:block;font-size:11px;color:var(--muted);margin-top:3px}
.submit-warn{font-size:12.5px;line-height:1.7;color:var(--warn);background:var(--warn-soft);border:1px solid #f1dcb8;border-radius:7px;padding:8px 10px;margin:0}
.toast-host{position:fixed;left:50%;bottom:26px;transform:translateX(-50%);z-index:120;display:flex;flex-direction:column;gap:8px;align-items:center;pointer-events:none}
.toast{background:#1f2328;color:#fff;border-radius:8px;padding:9px 15px;font-size:13px;box-shadow:0 8px 24px -8px rgba(0,0,0,.5);
  animation:toast-in .18s ease-out}
.toast.bad{background:var(--bad)}
.toast.good{background:var(--good)}
@keyframes toast-in{from{opacity:0;transform:translateY(6px)}}
.zoom{position:fixed;inset:0;z-index:100;background:rgba(20,20,20,.86);display:grid;place-items:center;padding:24px;cursor:zoom-out}
.zoom img{max-width:100%;max-height:100%;border-radius:6px;background:#fff}

/* ---------------- 页脚 ---------------- */
.site-foot{
  max-width:1040px;margin:0 auto;padding:6px 22px 34px;color:var(--muted);font-size:11.5px;
  display:flex;gap:10px;flex-wrap:wrap;align-items:center;
}
.site-foot::before{content:"";flex:1;height:1px;background:var(--line);order:-1;width:100%;margin-bottom:10px}
.site-foot a{color:var(--muted)}

/* ---------------- 响应式 ---------------- */
@media (max-width:1040px){
  .stat-row{grid-template-columns:repeat(2,1fr)}
  .today{grid-template-columns:1fr}
  .score-hero{grid-template-columns:1fr;gap:16px}
  .overall{border-right:0;border-bottom:1px solid var(--line);padding:0 0 16px;flex-direction:row;gap:16px;justify-content:flex-start}
  .overall .num{font-size:46px}
  .overall .band-desc{text-align:left;max-width:none}
  .report-grid{grid-template-columns:1fr}
}
@media (max-width:900px){
  body[data-route="practice"]{overflow:auto}
  body[data-route="practice"] .app{height:auto}
  .practice{grid-template-columns:1fr;height:auto}
  .prompt-pane{border-right:0;border-bottom:1px solid var(--line);max-height:none;padding:20px 18px 24px}
  .editor-bar{position:sticky;top:var(--topbar);z-index:6;background:var(--paper)}
  #essay{min-height:52vh;padding:20px 18px}
  .write-pane{min-height:60vh}
  .nav a{padding:6px 8px;font-size:12.5px}
  .brand-text em{display:none}
  .report-actions{justify-content:flex-start}
  .bands{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:620px){
  .app{padding:20px 14px 80px}
  .topbar{padding:0 12px;gap:10px}
  .brand-text{display:none}
  .nav{justify-content:center}
  .hero h1{font-size:24px}
  .task-row{grid-template-columns:48px 1fr auto;gap:10px}
  .task-row .meta{display:none}
  .overall{flex-direction:column;align-items:flex-start}
}
@media print{
  .topbar,.report-actions,.nav,.toast-host{display:none !important}
  body{background:#fff}
  .app{padding:0;max-width:none}
  .card,.panel,.err-card,.band{box-shadow:none;break-inside:avoid}
  .report-grid{grid-template-columns:1fr}
  a{color:inherit;text-decoration:none}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
}