/* Hanzi Studio v2 — practice layer */
.pro-label{display:flex;justify-content:space-between;align-items:center;gap:4px}.pro-new{font-size:9px;font-weight:850;color:#6556df;background:#ebe8ff;padding:3px 7px;border-radius:12px;letter-spacing:0}

.pro-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;margin:0 0 24px;flex-wrap:wrap}.pro-heading h2{font-weight:850;font-size:clamp(24px,2.3vw,32px);line-height:1.23;margin:4px 0 9px;letter-spacing:-.9px}.pro-heading p{margin:0;color:var(--muted);font-size:13px;line-height:1.7}.pro-tag{font-size:10px;font-weight:850;letter-spacing:1.1px;color:var(--primary);text-transform:uppercase}.pro-note{font-size:12px;line-height:1.65;color:var(--muted)}
.pro-hero{position:relative;overflow:hidden;background:linear-gradient(115deg,#6b5ce7 0%,#8773e9 66%,#a699f8 100%);color:white;border-radius:24px;padding:29px 34px;display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:20px;box-shadow:0 12px 25px rgba(91,76,192,.12)}.pro-hero h3{font-size:clamp(24px,2.7vw,35px);line-height:1.2;letter-spacing:-1px;max-width:570px;margin:10px 0}.pro-hero p{font-size:13px;line-height:1.65;color:#f2efff;max-width:540px}.pro-hero .pro-hero-icon{font-size:110px;opacity:.28;font-family:serif;line-height:1}.pro-hero .pro-tag{color:#eee9ff}
.pro-metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin:20px 0 26px}.pro-metric{padding:18px 20px;border-radius:16px;border:1px solid var(--stroke);background:var(--surface)}.pro-metric strong{display:block;font-size:27px;letter-spacing:-1px;margin-top:7px}.pro-metric span{font-size:11px;font-weight:700;color:var(--muted)}
.pro-mode-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.pro-mode{appearance:none;cursor:pointer;text-align:left;padding:24px 22px;min-height:201px;border:1px solid var(--stroke);border-radius:20px;background:var(--surface);color:var(--txt);box-shadow:0 7px 18px rgba(30,38,86,.025);transition:transform .2s,border-color .2s,box-shadow .2s}.pro-mode:hover,.pro-mode:focus-visible{transform:translateY(-3px);border-color:var(--primary);box-shadow:0 12px 28px rgba(84,72,192,.1);outline:none}.pro-mode .pro-symbol{width:48px;height:48px;border-radius:15px;display:grid;place-items:center;font-weight:800;font-size:23px;margin-bottom:21px;background:var(--primary-light);color:var(--primary)}.pro-mode:nth-child(2n) .pro-symbol{background:#e8f7f4;color:#2b9e8b}.pro-mode:nth-child(3n) .pro-symbol{background:#fff0df;color:#d99037}.pro-mode strong{display:block;font-size:16px;letter-spacing:-.3px;margin-bottom:7px}.pro-mode p{color:var(--muted);font-size:12px;line-height:1.5;min-height:36px}.pro-mode footer{display:flex;align-items:center;justify-content:space-between;font-size:11px;color:var(--primary);font-weight:750;margin-top:16px}
.pro-layout{display:grid;grid-template-columns:300px minmax(0,1fr);align-items:start;gap:16px}.pro-panel{background:var(--surface);border:1px solid var(--stroke);border-radius:21px;padding:24px}.pro-sidebar-list{display:flex;flex-direction:column;gap:8px;max-height:640px;overflow:auto;padding-right:3px}.pro-item{display:block;width:100%;cursor:pointer;text-align:left;border:1px solid transparent;color:var(--txt);border-radius:12px;background:transparent;padding:12px 14px}.pro-item:hover{background:var(--muted-bg)}.pro-item.active{background:var(--primary-light);color:var(--primary);border-color:transparent}.pro-item strong{display:block;font-size:13px;margin:3px 0 4px}.pro-item span{font-size:11px;color:var(--muted)}.pro-item.active span{color:var(--primary)}
.pro-card-title{font-size:24px;font-weight:800;letter-spacing:-.7px;margin:4px 0 12px}.pro-big-cn{font-family:'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;font-size:clamp(23px,2.9vw,39px);line-height:1.8;letter-spacing:.6px;word-break:break-word}.pro-example{padding:20px 22px;background:var(--muted-bg);border-radius:15px;margin:20px 0}.pro-example .pro-big-cn{font-size:clamp(20px,2.2vw,30px)}.pro-example p{margin:9px 0 0;color:var(--muted);font-size:13px;line-height:1.6}.pro-divider{height:1px;background:var(--stroke);margin:22px 0}
.pro-choices{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:11px;margin:18px 0}.pro-choice{display:flex;align-items:center;gap:12px;text-align:left;width:100%;min-height:64px;padding:14px 16px;border:1.5px solid var(--stroke);border-radius:13px;background:var(--surface);color:var(--txt);cursor:pointer;font-weight:600;font-size:15px;word-break:break-word;transition:.13s}.pro-choice:hover:not(:disabled),.pro-choice:focus-visible{border-color:var(--primary);background:var(--primary-light);outline:none}.pro-choice:disabled{cursor:default;opacity:1}.pro-choice.good{background:#e7f8ee;border-color:#58b990;color:#126346}.pro-choice.bad{background:#ffedf0;border-color:#ec788f;color:#a52343}.pro-choice .letter{font-weight:850;font-size:11px;border:1px solid var(--stroke);background:var(--muted-bg);padding:7px 10px;border-radius:8px;color:var(--muted);flex-shrink:0}.pro-choices.vertical{grid-template-columns:1fr}
.pro-feedback{border-radius:13px;padding:16px 19px;background:var(--muted-bg);font-size:13px;line-height:1.7;margin:14px 0}.pro-feedback.good{border:1px solid #91d6af;background:#e8f9ed;color:#155d42}.pro-feedback.bad{border:1px solid #efb4bf;background:#fff1f3;color:#a32942}
.pro-btn-row{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-top:16px}.pro-btn-row .btn:disabled{opacity:.4;cursor:not-allowed}.pro-caption{font-size:11px;color:var(--quiet);margin:12px 0}.pro-progress{height:8px;border-radius:99px;background:var(--muted-bg);overflow:hidden}.pro-progress i{height:100%;background:linear-gradient(90deg,#6e5de8,#a49cfa);display:block;border-radius:99px;transition:width .25s}.pro-toolbar{display:flex;gap:10px;align-items:center;justify-content:space-between;flex-wrap:wrap;margin-bottom:18px}.pro-toolbar select,.pro-toolbar input,.pro-form input,.pro-form select,.pro-form textarea{border:1px solid var(--stroke);border-radius:11px;padding:11px 12px;background:var(--surface);color:var(--txt);font:inherit;max-width:100%}.pro-toolbar input{min-width:200px}.pro-form{display:grid;gap:16px}.pro-form label{display:grid;gap:6px;font-weight:700;color:var(--txt);font-size:12px}.pro-form textarea{min-height:90px;resize:vertical;width:100%}.pro-form input{width:100%}.pro-mini-note{display:inline-flex;align-items:center;gap:8px;font-size:11px;color:var(--muted);background:var(--muted-bg);padding:8px 11px;border-radius:99px}.pro-mode-steps{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.pro-pill{border-radius:99px;border:1px solid var(--stroke);color:var(--muted);background:var(--surface);padding:8px 13px;font:inherit;font-size:11px;font-weight:750;cursor:pointer}.pro-pill.active{background:var(--primary);color:white;border-color:var(--primary)}
.pro-audio-board{text-align:center;padding:36px;background:linear-gradient(135deg,#ece9ff,#f7f4ff);color:#403884;border-radius:18px;margin:16px 0 23px}.pro-audio-board .audio-glyph{font-size:42px;line-height:1.5}.pro-audio-board p{font-size:11px;opacity:.75}.pro-audio-board button{border-radius:99px;background:#6e5de8;color:#fff;border:0;font-weight:750;padding:13px 22px;cursor:pointer;font:inherit}
[data-theme="dark"] .pro-audio-board{background:linear-gradient(130deg,#2c284e,#39315d);color:#efebff}[data-theme="dark"] .pro-choice.good{background:#1e4036;color:#b4efd2}[data-theme="dark"] .pro-choice.bad{background:#49272d;color:#ffb6c6}[data-theme="dark"] .pro-feedback.good{background:#203d35;color:#adf6ca}[data-theme="dark"] .pro-feedback.bad{background:#462831;color:#ffb6c6}
.pro-match-columns{display:grid;grid-template-columns:1fr 1fr;gap:14px}.pro-match-column{display:grid;gap:10px}.pro-match-cell{text-align:center;padding:19px 12px;min-height:75px;border:1.5px solid var(--stroke);color:var(--txt);border-radius:14px;font-size:18px;font-weight:700;background:var(--surface);cursor:pointer;word-break:break-word}.pro-match-cell.active{background:var(--primary-light);color:var(--primary);border-color:var(--primary)}.pro-match-cell.matched{background:#e8f7ef;border-color:#bbdfcd;color:#4c9d7b;opacity:.6;cursor:default}.pro-match-cell.shake{border-color:#ef637d}
.pro-token-bank,.pro-built{display:flex;flex-wrap:wrap;gap:9px;min-height:78px;align-content:center;padding:15px;border:1.5px dashed var(--stroke);border-radius:16px;background:var(--muted-bg);margin:10px 0 14px}.pro-built{border-style:solid;background:var(--surface)}.pro-token{padding:11px 15px;border-radius:12px;background:var(--surface);border:1px solid var(--stroke);color:var(--txt);font-size:17px;font-weight:650;cursor:pointer}.pro-built .pro-token{background:var(--primary-light);color:var(--primary)}.pro-token:disabled{opacity:.35;cursor:not-allowed}
.pro-score-board{text-align:center;padding:40px 25px;background:var(--surface);border:1px solid var(--stroke);border-radius:20px}.pro-score-board h3{font-size:26px;margin:9px 0}.pro-score-board .pro-big-score{font-size:68px;letter-spacing:-3px;font-weight:850;color:var(--primary);line-height:1.3}.pro-score-board p{color:var(--muted);font-size:13px;line-height:1.7}
.pro-exam-top{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;align-items:center;margin-bottom:12px}.pro-exam-tag{background:var(--primary-light);border-radius:99px;color:var(--primary);font-size:11px;font-weight:750;padding:8px 13px}.pro-source{font-size:11px;color:var(--quiet);margin-top:14px}.pro-result-list{margin-top:20px;max-height:400px;overflow:auto}.pro-result-line{display:flex;align-items:center;justify-content:space-between;gap:14px;border-bottom:1px solid var(--stroke);padding:12px 0;font-size:12px}.pro-result-line strong{font-size:14px}.pro-result-line span{color:var(--muted)}
.pro-count-chip{font-size:10px;display:inline-block;padding:4px 7px;background:var(--primary-light);color:var(--primary);border-radius:6px;font-weight:700}.pro-sources{background:var(--surface);border:1px solid var(--stroke);border-radius:16px;padding:20px 23px;margin-top:24px;color:var(--muted);font-size:12px;line-height:1.9}.pro-sources a{color:var(--primary)}.pro-hidden{display:none!important}
@media(max-width:1200px){.pro-mode-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.pro-layout{grid-template-columns:245px minmax(0,1fr)}.pro-hero .pro-hero-icon{font-size:80px}}
@media(max-width:740px){.pro-layout{grid-template-columns:1fr}.pro-sidebar-list{max-height:210px}.pro-hero{padding:25px 22px}.pro-hero .pro-hero-icon{display:none}.pro-metrics{grid-template-columns:repeat(2,minmax(0,1fr))}.pro-choices{grid-template-columns:1fr}.pro-panel{padding:19px}.pro-mode-grid{gap:10px}.pro-mode{padding:19px 16px;min-height:170px}.pro-mode .pro-symbol{width:39px;height:39px;font-size:18px;margin-bottom:14px}.pro-mode strong{font-size:14px}.pro-mode p{font-size:11px}.pro-heading h2{font-size:25px}}
@media(max-width:410px){.pro-mode-grid{grid-template-columns:1fr}.pro-match-cell{font-size:15px}.pro-metric{padding:15px}.pro-heading{margin-bottom:16px}}