.practice-page { max-width: 1040px; margin: auto; padding: 30px 20px 80px; color: var(--text); }
.practice-page nav { display: flex; gap: 18px; flex-wrap: wrap; margin-bottom: 26px; }
/* Page links (考试首页 / 我的课程 / 专项练习 / 跟读 / 学习报告 …) as outlined pill buttons, current page filled (owner 2026-09-30).
   ≥ 44 px touch targets; they wrap onto a second row at phone width instead of scrolling. */
.practice-page > nav { gap: 8px; align-items: center; }
.practice-page > nav > a { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0 16px; box-sizing: border-box;
  border: 1px solid var(--border-strong); border-radius: 999px; background: var(--bg); color: var(--heading);
  font-size: 15px; font-weight: 600; line-height: 1.2; text-decoration: none; white-space: nowrap; }
.practice-page > nav > a:hover { background: var(--surface); border-color: var(--heading); }
.practice-page > nav > a[aria-current="page"] { background: var(--primary); border-color: var(--primary); color: var(--on-primary); }
.practice-page > nav > a:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
@media (max-width: 600px) { .practice-page > nav { gap: 6px; } .practice-page > nav > a { padding: 0 13px; font-size: 14px; } }
.practice-page h1 { font-size: clamp(25px,4vw,34px); margin: 0 0 12px; }
.practice-page h2 { font-size: 21px; margin: 26px 0 14px; }
.practice-page p { line-height: 1.65; }
.practice-page button, .practice-page select, .practice-page input, .practice-page textarea { font: inherit; }
.practice-page button, .practice-link { border: 1px solid var(--primary); border-radius: var(--radius-btn); padding: 9px 15px; background: var(--primary); color: var(--on-primary); cursor: pointer; text-decoration: none; display: inline-block; }
.practice-page button.secondary { background: transparent; color: var(--heading); border-color: var(--border-strong); }
.practice-page button:disabled { cursor: default; opacity: .6; }
.practice-muted { color: var(--text-muted); font-size: 14px; }
.practice-toolbar { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin: 24px 0; }
.practice-toolbar input,.practice-toolbar select,.skill-card select { border: 1px solid var(--field-line); border-radius: var(--radius-sm); padding: 10px; max-width: 100%; background: var(--field-bg); color: var(--text); }
.skill-grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit,minmax(min(100%,290px),1fr)); }
.skill-card { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; display: flex; flex-direction: column; gap: 10px; }
.skill-card h2,.skill-card h3 { font-size: 18px; margin: 0; }
.skill-card p { margin: 0; }
.skill-card button { align-self: flex-start; margin-top: auto; }
.practice-notice { background: var(--info-bg); border-left: 4px solid var(--link); padding: 14px 16px; border-radius: var(--radius-sm); }
.practice-question { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); padding: clamp(15px,3vw,28px); margin: 22px 0; }
.practice-question h2 { white-space: pre-wrap; font-size: 19px; line-height: 1.6; margin: 14px 0; }
.practice-question p,.practice-feedback p { white-space: pre-wrap; }
.practice-choices { display: grid; gap: 9px; margin: 18px 0; }
.practice-choice { display: flex; align-items: flex-start; gap: 12px; padding: 13px; border: 1px solid var(--border-strong); border-radius: var(--radius-sm); cursor: pointer; }
.practice-choice input { margin-top: 5px; }
.practice-choice > span:has(img) { flex: 1; min-width: 0; }
.practice-choice img,.practice-pictures img { max-width: 100%; height: auto; }
.practice-choice img { width: 260px; max-height: 180px; object-fit: contain; display: block; }
.practice-answer,.practice-working { width: 100%; padding: 12px; border: 1px solid var(--field-line); border-radius: var(--radius-sm); background: var(--field-bg); color: var(--text); box-sizing: border-box; margin: 7px 0 15px; }
.practice-answer { min-height: 48px; }
textarea.practice-answer { min-height: 160px; }
.practice-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 15px; }
.practice-feedback { border-left: 4px solid var(--border-strong); background: var(--surface); padding: 14px 18px; margin: 18px 0; }
.practice-feedback.correct { border-color: var(--st-ok); }
.practice-feedback.incorrect { border-color: var(--st-no); }
.practice-feedback .coordinate-svg { width: 100%; max-width: 100%; height: auto; }
.practice-feedback .coordinate-axis-labels { font-size: 18px; }
.practice-feedback .coordinate-graph .math-scroll-hint { display: none; }
.practice-feedback .math-table .data-table { display: table; font-size: 14px; }
.practice-feedback .math-table .data-table th,
.practice-feedback .math-table .data-table td { min-width: 0; padding: 6px 4px; }
.practice-material { background: var(--surface); padding: 15px; border-radius: var(--radius-sm); margin: 12px 0; }
.practice-material h3 { font-size: 14px; margin: 0 0 8px; }
.practice-pictures { display: flex; gap: 10px; flex-wrap: wrap; }
.practice-pictures img { flex: 1; min-width: 160px; max-width: 300px; object-fit: contain; }
.report-stats { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 12px; margin: 22px 0; }
.report-stat { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; }
.report-stat strong { display: block; font-size: 28px; margin: 8px 0; }
.report-pilot { display: inline-block; font-size: 13px; line-height: 1.4; padding: 1px 8px; border-radius: 999px; border: 1px solid var(--border-strong); color: var(--text-muted); background: var(--surface); }
.report-table { width: 100%; border-collapse: collapse; text-align: left; font-size: 14px; }
.report-table th,.report-table td { border-bottom: 1px solid var(--border); padding: 12px 8px; vertical-align: top; }
.report-table-wrap { overflow-x: auto; }
@media(max-width:600px) { .report-stats { grid-template-columns: repeat(2,minmax(0,1fr)); }.practice-page { padding:24px 15px 65px; }.practice-feedback { padding:14px 8px; margin-left:-8px; margin-right:-8px; } }
@media print { nav,button,.practice-toolbar,.practice-link { display:none!important; }.practice-page { max-width:none; padding:0; }.report-stat,.skill-card { break-inside:avoid; } }

.skill-card .practice-link { align-self:flex-start; }
.study-support details > summary { cursor:pointer;padding:7px 0;font-weight:600; }
/* Learning report course lists: keep the bullets inside the page gutter on a phone. */
#course ul { padding-left: 1.2em; }