:root {
  --bg: #f7f3ec;
  --surface: #ffffff;
  --surface-2: #fbf8f3;
  --ink: #2a2522;
  --ink-2: #5c534c;
  --muted: #8a8079;
  --line: #e7dfd4;
  --primary: #a8323e;
  --primary-ink: #ffffff;
  --primary-soft: #f6e4e3;
  --accent: #2f6f62;
  --accent-soft: #e2efeb;
  --warn: #b7791f;
  --warn-soft: #fbf0dc;
  --bad: #c0392b;
  --bad-soft: #fbe5e1;
  --ok: #2f7d4f;
  --ok-soft: #e3f2e8;
  --stu: #a8323e;
  --ref: #9fc3b9;
  --ref-bad: #e9b44c;
  --great: #2f7d4f;
  --good: #2f6f62;
  --mid: #b7791f;
  --low: #c0392b;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(60, 40, 20, .06), 0 4px 16px rgba(60, 40, 20, .05);
  --font-serif: "Songti SC", "STSong", "Noto Serif SC", "Source Han Serif SC", serif;
  --font-sans: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  color-scheme: light;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--bg); color: var(--ink); font: 15px/1.6 var(--font-sans); -webkit-font-smoothing: antialiased; }
h1, h2, h3, h4 { font-family: var(--font-serif); margin: 0 0 .5em; line-height: 1.3; font-weight: 700; }
h1 { font-size: 20px; } h2 { font-size: 18px; } h3 { font-size: 16px; } h4 { font-size: 14px; }
p { margin: 0 0 .6em; }
a { color: var(--accent); text-decoration: none; }
code { background: var(--surface-2); border: 1px solid var(--line); border-radius: 4px; padding: 0 4px; font-size: 12px; }
small, .small { font-size: 12.5px; }
.muted { color: var(--muted); }
.err { color: var(--bad); }
.mono { font-family: ui-monospace, Menlo, monospace; font-size: 13px; }
[hidden] { display: none !important; }

input, select, textarea {
  font: inherit; color: inherit; background: var(--surface); border: 1px solid var(--line);
  border-radius: 8px; padding: 8px 10px; width: 100%; min-height: 38px;
}
input:focus, select:focus, textarea:focus { outline: 2px solid color-mix(in srgb, var(--accent) 45%, transparent); border-color: var(--accent); }
input[type=checkbox], input[type=radio] { width: auto; min-height: 0; accent-color: var(--primary); }
input[type=range] { padding: 0; border: 0; accent-color: var(--primary); }
textarea.full { width: 100%; }
.num { width: 64px; text-align: center; padding: 6px 4px; }
.inline { min-height: 30px; padding: 4px 8px; width: 120px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  font: inherit; font-weight: 600; font-size: 14px; color: var(--ink); background: var(--surface);
  border: 1px solid var(--line); border-radius: 999px; padding: 8px 16px; min-height: 38px; cursor: pointer;
  transition: background .15s, transform .05s; white-space: nowrap;
}
.btn:hover { background: var(--surface-2); }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn.primary { background: var(--primary); border-color: var(--primary); color: var(--primary-ink); }
.btn.primary:hover { background: color-mix(in srgb, var(--primary) 88%, black); }
.btn.ghost { background: transparent; }
.btn.danger { color: var(--bad); }
.btn.small { padding: 4px 12px; min-height: 30px; font-size: 13px; }
.btn.block { display: flex; width: 100%; }
.btn.big { padding: 12px 28px; font-size: 16px; min-height: 48px; }
.btn.recording { background: var(--bad); border-color: var(--bad); color: #fff; animation: pulse 1.2s infinite; }
@keyframes pulse { 50% { box-shadow: 0 0 0 8px color-mix(in srgb, var(--bad) 20%, transparent); } }
.link { background: none; border: 0; color: var(--accent); font: inherit; cursor: pointer; padding: 0; }
.link.danger { color: var(--bad); }
.icon-btn { background: none; border: 0; color: var(--muted); cursor: pointer; font-size: 14px; padding: 4px 8px; border-radius: 6px; }
.icon-btn:hover { background: var(--surface-2); color: var(--ink); }

.row { display: flex; align-items: center; }
.row.gap { gap: 8px; }
.row.wrap { flex-wrap: wrap; }
.row.between { justify-content: space-between; gap: 8px; }
.row.center { justify-content: center; }
.pad { padding: 16px 0; }

.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; margin-bottom: 12px; box-shadow: var(--shadow); }
.card > summary { cursor: pointer; font-weight: 600; }
.link-card { display: block; color: inherit; }
.link-card:hover { border-color: color-mix(in srgb, var(--primary) 40%, var(--line)); }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 12px; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
@media (max-width: 900px) { .grid2, .grid3 { grid-template-columns: 1fr; } }

.tag { display: inline-block; font-size: 12px; line-height: 1; padding: 4px 8px; border-radius: 999px; background: var(--surface-2); color: var(--ink-2); border: 1px solid var(--line); margin-right: 4px; white-space: nowrap; }
.tag.ok { background: var(--ok-soft); color: var(--ok); border-color: transparent; }
.tag.warn { background: var(--warn-soft); color: var(--warn); border-color: transparent; }
.tag.bad { background: var(--bad-soft); color: var(--bad); border-color: transparent; }
.grade { display: inline-block; font-weight: 700; font-size: 13px; padding: 2px 10px; border-radius: 6px; font-family: var(--font-serif); }
.g-a { background: var(--ok-soft); color: var(--great); }
.g-b { background: var(--accent-soft); color: var(--good); }
.g-c { background: var(--warn-soft); color: var(--mid); }
.g-d { background: var(--bad-soft); color: var(--low); }
.s-great { color: var(--great); } .s-good { color: var(--good); } .s-mid { color: var(--mid); } .s-low { color: var(--low); }
.notice { background: var(--accent-soft); color: var(--ink-2); border-radius: 10px; padding: 10px 14px; font-size: 13.5px; margin-bottom: 12px; }
.notice.warn { background: var(--warn-soft); }
.comment { background: var(--surface-2); border-left: 3px solid var(--primary); padding: 8px 12px; border-radius: 0 8px 8px 0; }
.empty { text-align: center; color: var(--muted); padding: 48px 16px; }
.loading { display: flex; justify-content: center; gap: 6px; padding: 48px; }
.loading span { width: 8px; height: 8px; border-radius: 50%; background: var(--primary); animation: bounce 1s infinite; }
.loading span:nth-child(2) { animation-delay: .15s; } .loading span:nth-child(3) { animation-delay: .3s; }
@keyframes bounce { 50% { transform: translateY(-8px); opacity: .5; } }
ul.plain { list-style: none; padding: 0; margin: 0; }
ul.plain li { padding: 4px 0; }

.seg { display: inline-flex; background: var(--surface-2); border: 1px solid var(--line); border-radius: 999px; padding: 3px; gap: 2px; flex-wrap: wrap; }
.seg button { font: inherit; font-size: 13.5px; background: transparent; border: 0; border-radius: 999px; padding: 5px 14px; cursor: pointer; color: var(--ink-2); }
.seg button.on { background: var(--surface); color: var(--primary); font-weight: 600; box-shadow: 0 1px 3px rgba(0,0,0,.08); }
.chips { display: flex; gap: 6px; overflow-x: auto; padding: 2px 0 8px; scrollbar-width: none; }
.chip { font: inherit; font-size: 13px; background: var(--surface); border: 1px solid var(--line); border-radius: 999px; padding: 4px 12px; cursor: pointer; white-space: nowrap; color: var(--ink-2); }
.chip.on { background: var(--primary); border-color: var(--primary); color: #fff; }
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); margin-bottom: 12px; }
.tabs button { font: inherit; background: none; border: 0; padding: 8px 14px; cursor: pointer; color: var(--muted); border-bottom: 2px solid transparent; }
.tabs button.on { color: var(--primary); border-color: var(--primary); font-weight: 600; }

.tbl { width: 100%; border-collapse: collapse; background: var(--surface); border-radius: var(--radius); overflow: hidden; font-size: 14px; }
.tbl th, .tbl td { padding: 9px 10px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: middle; }
.tbl th { background: var(--surface-2); font-weight: 600; color: var(--ink-2); font-size: 13px; white-space: nowrap; }
.tbl tr:last-child td { border-bottom: 0; }
.tbl.small th, .tbl.small td { padding: 6px 8px; font-size: 13px; }
.main-body > .tbl { border: 1px solid var(--line); box-shadow: var(--shadow); margin-bottom: 12px; }
.pass { color: var(--ok); font-weight: 600; } .fail { color: var(--bad); font-weight: 600; }
.kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; margin-bottom: 12px; }
.kpis > div { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 12px 14px; box-shadow: var(--shadow); }
.kpis b { display: block; font-size: 24px; font-family: var(--font-serif); }
.kpis span { color: var(--muted); font-size: 12.5px; }
.kpis .pass b { color: var(--ok); } .kpis .fail b { color: var(--bad); }

.form { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 14px; margin-bottom: 12px; }
.form label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--ink-2); }
.form label.check { flex-direction: row; align-items: center; }
.form .span2 { grid-column: span 2; }
@media (max-width: 600px) { .form { grid-template-columns: 1fr; } .form .span2 { grid-column: auto; } }
.field { display: flex; flex-direction: column; gap: 4px; margin-bottom: 10px; font-size: 13px; color: var(--ink-2); }
.check { display: flex; align-items: center; gap: 8px; font-size: 14px; margin: 8px 0; }
.inline-field { display: inline-flex; align-items: center; gap: 6px; }

/* ---------- 弹窗与提示 ---------- */
.modal-wrap { position: fixed; inset: 0; background: rgba(30, 20, 15, .4); display: grid; place-items: center; z-index: 50; padding: 16px; }
.modal { background: var(--surface); border-radius: 16px; width: min(460px, 100%); max-height: 90vh; display: flex; flex-direction: column; box-shadow: 0 20px 60px rgba(0,0,0,.2); }
.modal.wide { width: min(680px, 100%); }
.modal-head { display: flex; justify-content: space-between; align-items: center; padding: 14px 18px 0; }
.modal-head h3 { margin: 0; }
.modal-body { padding: 14px 18px; overflow: auto; }
.modal-foot { display: flex; justify-content: flex-end; gap: 8px; padding: 0 18px 16px; }
#toasts { position: fixed; top: 16px; left: 50%; transform: translateX(-50%); z-index: 60; display: flex; flex-direction: column; gap: 8px; align-items: center; pointer-events: none; }
.toast { background: var(--ink); color: #fff; padding: 9px 16px; border-radius: 10px; font-size: 14px; box-shadow: 0 6px 20px rgba(0,0,0,.2); transition: opacity .3s, transform .3s; max-width: 90vw; }
.toast.error { background: var(--bad); } .toast.success { background: var(--ok); }
.toast.out { opacity: 0; transform: translateY(-6px); }

/* ---------- 登录 ---------- */
.login { min-height: 100vh; display: grid; place-items: center; padding: 16px;
  background: radial-gradient(circle at 20% 10%, var(--primary-soft), transparent 50%), radial-gradient(circle at 90% 90%, var(--accent-soft), transparent 50%), var(--bg); }
.login-card { width: min(420px, 100%); background: var(--surface); border-radius: 20px; padding: 28px; box-shadow: 0 10px 40px rgba(60,40,20,.1); }
.login-brand { text-align: center; margin-bottom: 20px; }
.login-brand h1 { margin: 12px 0 4px; font-size: 22px; }
.login-brand p { color: var(--muted); }
.login form .btn { margin-top: 8px; }
.demo-accounts { margin-top: 18px; font-size: 13px; }
.demo-accounts summary { cursor: pointer; color: var(--muted); }
.demo-accounts .tbl { margin: 8px 0; }
.logo { display: inline-grid; place-items: center; width: 36px; height: 36px; border-radius: 10px; background: var(--primary); color: #fff; font-family: var(--font-serif); font-size: 14px; font-weight: 700; flex: none; }
.logo.big { width: 56px; height: 56px; font-size: 20px; border-radius: 16px; }

/* ---------- 学生端（手机） ---------- */
.phone { max-width: 520px; margin: 0 auto; min-height: 100vh; background: var(--bg); position: relative; padding-bottom: 72px; }
.m-head { position: sticky; top: 0; z-index: 10; display: flex; align-items: center; gap: 10px; padding: 10px 16px; background: color-mix(in srgb, var(--bg) 92%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.m-head h1 { margin: 0; font-size: 17px; flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.m-head .logo { width: 30px; height: 30px; font-size: 12px; border-radius: 8px; }
.back { font-size: 28px; line-height: 1; color: var(--ink); padding: 0 6px 4px 0; }
.m-body { padding: 12px 16px; }
.tabbar { position: fixed; bottom: 0; left: 50%; transform: translateX(-50%); width: min(520px, 100%); display: grid; grid-template-columns: repeat(4, 1fr); background: var(--surface); border-top: 1px solid var(--line); padding-bottom: env(safe-area-inset-bottom); z-index: 10; }
.tabbar a { display: flex; flex-direction: column; align-items: center; padding: 7px 0 6px; font-size: 11.5px; color: var(--muted); }
.tabbar a span { font-size: 19px; line-height: 1.2; }
.tabbar a.on { color: var(--primary); font-weight: 600; }
.search { margin-bottom: 10px; border-radius: 999px; padding-left: 16px; }
.piece-card { display: block; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; margin-bottom: 10px; color: inherit; box-shadow: var(--shadow); position: relative; overflow: hidden; }
.piece-card::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 4px; background: var(--primary); opacity: .75; }
.piece-card h3 { margin: 6px 0 4px; font-size: 18px; }
.pc-top { display: flex; flex-wrap: wrap; gap: 4px; align-items: center; }
.opera { font-family: var(--font-serif); color: var(--primary); font-weight: 700; margin-right: 4px; }
.lyric { color: var(--ink-2); font-family: var(--font-serif); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; margin-bottom: 2px; }
.lv-入门 { background: var(--ok-soft); color: var(--ok); border-color: transparent; }
.lv-进阶 { background: var(--accent-soft); color: var(--accent); border-color: transparent; }
.lv-提高 { background: var(--primary-soft); color: var(--primary); border-color: transparent; }
.synopsis { color: var(--ink-2); margin-top: 10px; font-size: 14px; }
.sticky-cta { position: sticky; bottom: 12px; padding-top: 4px; }
.prose ol { padding-left: 20px; } .prose li { margin-bottom: 6px; }
.opt { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 8px 0; border-bottom: 1px dashed var(--line); flex-wrap: wrap; }
.opt:last-child { border-bottom: 0; }
.opt > span { color: var(--ink-2); font-size: 14px; }
.stepper { display: inline-flex; align-items: center; gap: 10px; }
.stepper button { width: 32px; height: 32px; border-radius: 50%; border: 1px solid var(--line); background: var(--surface); font-size: 18px; cursor: pointer; }
.stepper b { min-width: 90px; text-align: center; font-weight: 600; font-size: 14px; }
.live canvas { width: 100%; height: 200px; border-radius: 10px; display: block; margin-bottom: 10px; }
.status { text-align: center; font-size: 14px; min-height: 22px; }
.status.rec { color: var(--bad); font-weight: 600; } .status.busy { color: var(--accent); } .status.err { color: var(--bad); }
.lyric-now { text-align: center; font-family: var(--font-serif); font-size: 18px; margin: 6px 0 12px; color: var(--ink); letter-spacing: 2px; }
.demo-tools summary { font-size: 14px; color: var(--muted); font-weight: 400; }
.stats3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-bottom: 12px; }
.stats3 div { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); text-align: center; padding: 12px 4px; }
.stats3 b { display: block; font-size: 24px; font-family: var(--font-serif); color: var(--primary); }
.stats3 span { font-size: 12px; color: var(--muted); }
.attempt-list { list-style: none; padding: 0; margin: 0; }
.attempt-list li { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 10px 0; border-bottom: 1px solid var(--line); }
.attempt-list li:last-child { border-bottom: 0; }
.attempt-list a { display: flex; align-items: center; gap: 8px; color: inherit; flex: 1; flex-wrap: wrap; }
.attempt-list b { font-size: 20px; font-family: var(--font-serif); min-width: 30px; }
.profile { display: flex; align-items: center; gap: 14px; }
.avatar { width: 56px; height: 56px; border-radius: 50%; background: var(--primary-soft); color: var(--primary); display: grid; place-items: center; font-family: var(--font-serif); font-weight: 700; font-size: 18px; }
.profile input { margin-bottom: 8px; }
.card input[type=password] { margin-bottom: 8px; }
.ann { display: flex; align-items: center; gap: 8px; padding: 6px 0; border-bottom: 1px dashed var(--line); flex-wrap: wrap; }
.ann small { margin-left: auto; }
.big-num { font-size: 26px; font-family: var(--font-serif); color: var(--primary); }

/* ---------- 简谱 ---------- */
.jianpu { overflow-x: auto; }
.jline { display: flex; gap: 10px; padding: 10px 8px; border-radius: 10px; cursor: pointer; align-items: flex-start; }
.jline:hover { background: var(--surface-2); }
.jline.active { background: var(--primary-soft); }
.jline.looping .jno { background: var(--primary); color: #fff; }
.jno { flex: none; width: 22px; height: 22px; border-radius: 50%; background: var(--surface-2); border: 1px solid var(--line); display: grid; place-items: center; font-size: 12px; color: var(--muted); margin-top: 2px; }
.jbody { display: flex; flex-wrap: wrap; gap: 4px 10px; }
.jg { display: inline-flex; flex-direction: column; align-items: flex-start; }
.jnotes { display: inline-flex; align-items: flex-end; font-family: ui-monospace, Menlo, monospace; font-size: 16px; line-height: 1.6; }
.jn { position: relative; padding: 0 2px; }
.jn.u1 { border-bottom: 1.5px solid var(--ink); }
.jn.u2 { border-bottom: 3px double var(--ink); }
.jn.dash { color: var(--muted); }
.orn { font-size: 10px; color: var(--primary); position: absolute; top: -6px; right: -4px; }
.breath { color: var(--accent); font-size: 12px; font-weight: 700; margin: 0 2px; align-self: flex-start; }
.jchar { font-family: var(--font-serif); font-size: 17px; padding: 0 2px; border-radius: 4px; }
.c-warn { background: var(--warn-soft); color: var(--warn); }
.c-bad { background: var(--bad-soft); color: var(--bad); font-weight: 700; }

/* ---------- 报告 ---------- */
.report-head { display: flex; gap: 16px; align-items: center; }
.score-ring { flex: none; width: 96px; height: 96px; border-radius: 50%; display: grid; place-content: center; text-align: center; border: 6px solid currentColor; background: var(--surface-2); }
.score-ring strong { font-size: 34px; line-height: 1; font-family: var(--font-serif); }
.score-ring span { font-size: 11px; color: var(--muted); }
.head-meta h2 { margin: 6px 0 2px; }
.final { margin: 6px 0 0; }
.suggest { padding-left: 22px; margin: 0; }
.suggest li { margin-bottom: 10px; cursor: pointer; }
.suggest li b { display: block; font-weight: 600; }
.suggest li span { color: var(--ink-2); font-size: 13.5px; }
.radar-wrap { max-width: 340px; margin: 0 auto; }
.radar { width: 100%; height: auto; display: block; }
.radar .grid { fill: none; stroke: var(--line); }
.radar .axis { stroke: var(--line); }
.radar text { font-size: 12px; fill: var(--ink-2); font-family: var(--font-sans); }
.radar .series { stroke-width: 2; }
.sr-now { fill: color-mix(in srgb, var(--primary) 22%, transparent); stroke: var(--primary); }
.sr-best { fill: none; stroke: var(--accent); stroke-dasharray: 4 3; }
.sr-class { fill: none; stroke: var(--warn); stroke-dasharray: 2 3; }
.legend { display: flex; justify-content: center; gap: 14px; font-size: 12.5px; color: var(--ink-2); flex-wrap: wrap; margin: 4px 0 8px; }
.legend i { display: inline-block; width: 14px; height: 3px; vertical-align: middle; margin-right: 5px; border-radius: 2px; }
.legend .sr-now i { background: var(--primary); } .legend .sr-best i { background: var(--accent); } .legend .sr-class i { background: var(--warn); }
.lg-stu i { background: var(--stu); } .lg-ref i { background: var(--ref); height: 6px !important; } .lg-bad i { background: var(--ref-bad); height: 6px !important; }
.dims { list-style: none; padding: 0; margin: 0; }
.dims li { display: grid; grid-template-columns: 128px 1fr 64px; gap: 10px; align-items: center; padding: 5px 0; }
.dname { font-size: 14px; display: flex; flex-direction: column; line-height: 1.25; }
.conf { color: var(--muted); font-size: 11px; }
.bar, .sbar { height: 8px; background: var(--surface-2); border-radius: 99px; overflow: hidden; border: 1px solid var(--line); }
.bar i, .sbar i { display: block; height: 100%; border-radius: 99px; background: currentColor; }
.dval { text-align: right; font-weight: 700; font-family: var(--font-serif); font-size: 16px; }
.dval small { font-weight: 400; margin-left: 4px; }
.changed { color: var(--primary); }
.dims li:has(.dval .grade) { grid-template-columns: 128px 1fr; }
.sentences { display: flex; flex-direction: column; gap: 4px; margin-bottom: 12px; }
.sent { display: grid; grid-template-columns: 24px 1fr 70px 30px; gap: 8px; align-items: center; background: none; border: 1px solid transparent; border-radius: 10px; padding: 8px; cursor: pointer; font: inherit; text-align: left; color: inherit; }
.sent:hover { background: var(--surface-2); }
.sent.on { border-color: var(--primary); background: var(--primary-soft); }
.sno { width: 22px; height: 22px; border-radius: 50%; background: var(--surface-2); border: 1px solid var(--line); display: grid; place-items: center; font-size: 12px; }
.slyric { font-family: var(--font-serif); font-size: 17px; letter-spacing: 1px; }
.slyric span { border-radius: 3px; padding: 0 1px; }
.sval { text-align: right; font-weight: 700; }
.compare canvas { width: 100%; height: 180px; border-radius: 10px; display: block; border: 1px solid var(--line); }
.compare .legend { justify-content: flex-start; margin: 6px 0 10px; }
.report.narrow { max-width: 760px; }

/* ---------- 网页端 ---------- */
.desk { display: grid; grid-template-columns: 220px 1fr; min-height: 100vh; }
.side { background: #2b2421; color: #e9e1d8; display: flex; flex-direction: column; position: sticky; top: 0; height: 100vh; }
.brand { display: flex; align-items: center; gap: 10px; padding: 18px 16px; border-bottom: 1px solid rgba(255,255,255,.08); }
.brand b { display: block; font-family: var(--font-serif); font-size: 15px; }
.brand small { color: #b6aaa0; }
.side nav { display: flex; flex-direction: column; padding: 10px 8px; gap: 2px; flex: 1; }
.side nav a { color: #d8cec5; padding: 9px 12px; border-radius: 8px; font-size: 14px; }
.side nav a:hover { background: rgba(255,255,255,.06); }
.side nav a.on { background: var(--primary); color: #fff; font-weight: 600; }
.me { display: flex; justify-content: space-between; padding: 14px 16px; border-top: 1px solid rgba(255,255,255,.08); font-size: 13px; }
.me .link { color: #e9b4ad; }
.main { min-width: 0; }
.main-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 18px 24px 8px; flex-wrap: wrap; }
.main-head h1 { margin: 0; font-size: 22px; }
.main-body { padding: 8px 24px 32px; }
@media (max-width: 800px) {
  .desk { grid-template-columns: 1fr; }
  .side { position: static; height: auto; }
  .side nav { flex-direction: row; flex-wrap: wrap; }
  .main-head, .main-body { padding-left: 16px; padding-right: 16px; }
  .main-body { overflow-x: auto; }
}
.review-grid { display: grid; grid-template-columns: minmax(0, 1fr) 360px; gap: 16px; align-items: start; }
.review-side { position: sticky; top: 12px; }
.warn-card { border-color: var(--warn); background: var(--warn-soft); }
@media (max-width: 1100px) { .review-grid { grid-template-columns: 1fr; } .review-side { position: static; } }
.score-edit { display: flex; flex-direction: column; gap: 6px; margin-bottom: 10px; }
.score-edit label { display: grid; grid-template-columns: 110px 1fr auto; gap: 8px; align-items: center; font-size: 14px; }
.score-edit input[type=number] { width: 80px; }
.score-edit output { min-width: 28px; text-align: right; font-weight: 700; }
.review-side select, .review-side textarea { margin-bottom: 8px; }
.line-chart, .scatter { width: 100%; height: auto; display: block; }
.line-chart .grid { stroke: var(--line); stroke-dasharray: 3 3; }
.line-chart .tick, .scatter .tick { font-size: 10px; fill: var(--muted); }
.line-chart .line { fill: none; stroke: var(--primary); stroke-width: 2; }
.line-chart circle { fill: var(--primary); }
.spark { width: 150px; }
.spark .line-chart .tick { display: none; }
.scatter { max-width: 340px; margin: 0 auto; }
.scatter .diag { stroke: var(--line); stroke-dasharray: 4 4; }
.scatter circle { fill: color-mix(in srgb, var(--primary) 70%, transparent); }
.scatter .axis-label { font-size: 11px; fill: var(--ink-2); }
.weights td { padding: 6px; }
.weights select, .weights input[name=name] { min-width: 90px; }
.sum.err { color: var(--bad); font-weight: 700; }
.seglist li { padding: 2px 0; }
.reveal { margin-top: 14px; padding-top: 12px; border-top: 1px dashed var(--line); }

/* 课堂投屏 */
.stage { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }
.stage:fullscreen { padding: 32px 48px; display: flex; flex-direction: column; gap: 16px; }
.stage-head { display: flex; justify-content: space-between; align-items: center; }
.stage-head h2 { font-size: 26px; margin: 0; }
.stage-score { display: flex; align-items: center; gap: 10px; }
.stage-score b { font-size: 40px; font-family: var(--font-serif); color: var(--primary); }
.stage-sents { display: flex; gap: 8px; flex-wrap: wrap; margin: 12px 0; }
.stage-sents button { font: inherit; font-family: var(--font-serif); font-size: 22px; background: var(--surface-2); border: 2px solid var(--line); border-radius: 12px; padding: 6px 14px; cursor: pointer; }
.stage-sents button.on { border-color: var(--primary); }
.stage-sents small { font-size: 13px; color: var(--muted); margin-left: 6px; font-family: var(--font-sans); }
.stage-canvas { width: 100%; height: 360px; border-radius: 12px; display: block; margin-bottom: 14px; }
.stage:fullscreen .stage-canvas { flex: 1; height: auto; }