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strong{font-family:var(--ed-font-display);font-size:clamp(2.7rem,5vw,4rem);line-height:1}.s08-hero-mark span{margin-top:var(--ed-space-2);font-size:var(--ed-font-size-sm);font-weight:var(--ed-font-weight-semibold)}.s08-hero-mark small{color:var(--ed-color-text-secondary)}.s08-layout{gap:var(--ed-space-5);grid-template-columns:minmax(0,1fr) minmax(17rem,21rem);align-items:start;display:grid}.s08-main-column,.s08-side-column{gap:var(--ed-space-4);min-width:0;display:grid}.s08-results-card,.s08-words-card,.s08-patterns-card{border-top:3px solid var(--ed-color-burgundy-700)}.s08-section-heading{gap:var(--ed-space-3);grid-template-columns:2.15rem minmax(0,1fr);align-items:start;display:grid}.s08-section-heading>span{aspect-ratio:1;color:#fff;background:var(--ed-color-burgundy-700);width:2.15rem;height:2.15rem;font-weight:var(--ed-font-weight-bold);border-radius:50%;place-items:center;line-height:1;display:grid}.s08-section-heading 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strong{font-size:var(--ed-font-size-sm)}.s08-progress-card li small{font-size:var(--ed-font-size-xs)}.s08-progress-card li.is-complete{color:var(--ed-color-success)}.s08-progress-card li.is-complete>span{color:#fff;border-color:var(--ed-color-success);background:var(--ed-color-success)}.s08-progress-card li.is-current{color:var(--ed-color-burgundy-800);background:var(--ed-color-burgundy-100)}.s08-progress-card li.is-current>span{color:#fff;border-color:var(--ed-color-burgundy-700);background:var(--ed-color-burgundy-700)}.s08-tip-card{gap:var(--ed-space-3);grid-template-columns:auto minmax(0,1fr);align-items:center;display:grid}.s08-tip-card>span{color:var(--ed-color-gold-500);font-family:var(--ed-font-display);font-size:2.4rem}.s08-tip-card p{color:var(--ed-color-text-secondary);margin:0;display:grid}.s08-tip-card strong{color:var(--ed-color-navy-900)}@media 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.sidebar{background:linear-gradient(165deg,#062846 0%,#0c3e68 72%,#092d52 100%)}.shell-student .brand{padding:.2rem .7rem .9rem;font-family:Georgia,Noto Serif SC,serif;font-size:1.45rem}.shell-student .brand small{font-family:Inter,Segoe UI,sans-serif;font-size:.78rem}.shell-student .nav a{align-items:center;gap:.7rem;min-height:3rem;display:flex}.shell-student .nav a:hover{background:#ffffff1a}.nav-icon{text-align:center;flex:none;width:1.5rem;font-size:1.2rem}.shell-student .role-switch{background:#041a2e6b;border-color:#ffffff2e}.shell-student .main{padding-top:clamp(2rem,5vw,4rem)}.student-page{width:min(100%,74rem);min-width:0;margin:0 auto}.student-page h1,.student-page h2{color:var(--student-blue)}.student-heading{justify-content:space-between;align-items:flex-start;gap:1.25rem;margin-bottom:2rem;display:flex}.student-heading h1{margin-bottom:.55rem}.student-heading .avatar{background:var(--student-red)}.learning-now{background:linear-gradient(115deg,#fff 0% 61%,#edf4f7 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0 1.6rem;font-size:1.18rem}.button-large{min-height:3.2rem;padding-inline:1.25rem}.shell-student .button{background:var(--student-red)}.shell-student .button:hover{background:var(--student-red-dark)}.shell-student .button-secondary{color:var(--student-blue);background:#fff;border-color:#cdd8e1}.shell-student .button-secondary:hover{background:#f3f7fa}.lesson-seal{z-index:1;text-align:center;width:9.5rem;height:9.5rem;color:var(--student-blue);background:#ffffff9e;border:1px solid #a91f353b;border-radius:50%;place-content:center;display:grid;position:absolute;top:50%;right:clamp(2rem,8vw,7rem);transform:translateY(-50%)rotate(-4deg)}.lesson-seal:before{content:"";border-radius:inherit;border:1px solid #a91f352e;position:absolute;inset:.55rem}.lesson-seal span{font-family:Noto Serif SC,serif;font-size:2.35rem;font-weight:750}.lesson-seal small{color:var(--student-red)}.student-summary-grid{grid-template-columns:repeat(12,minmax(0,1fr));gap:1rem;margin-top:1rem;display:grid}.summary-card{border:1px solid var(--student-line);background:#ffffffe6;border-radius:1rem;grid-column:span 5;gap:1rem;min-width:0;padding:1.35rem;display:flex}.summary-card.compact{grid-column:span 2}.summary-card h2{margin:.15rem 0 .35rem;font-size:1.28rem}.summary-card .dashboard-question{margin-top:0}.summary-icon{border-radius:.7rem;flex:none;place-items:center;width:2.7rem;height:2.7rem;font-size:1.15rem;font-weight:800;display:grid}.summary-icon.blue{color:#fff;background:var(--student-blue-2)}.summary-icon.burgundy{color:#fff;background:var(--student-red)}.summary-icon.outline{color:var(--student-blue);background:#f4f8fa;border:1px solid #cbd7df}.status-line,.status-pill{color:var(--student-red);align-items:center;gap:.5rem;font-weight:750;display:inline-flex}.status-dot{border-radius:50%;width:.55rem;height:.55rem;display:inline-block}.status-dot.red{background:#d14955}.text-link,.back-link{color:var(--student-blue-2);font-weight:750}.back-link{margin-bottom:1.25rem;display:inline-flex}.lesson-heading{margin-bottom:2rem}.lesson-title-hanzi{margin:.75rem 0 0;font-family:Noto Serif SC,serif;font-size:clamp(3rem,7vw,5rem);line-height:1}.lesson-title-pinyin{color:var(--student-red);margin:.5rem 0 0;font-size:1.35rem;font-weight:750}.lesson-title-russian{color:#536575;margin:0;font-size:1.2rem}.lesson-layout{grid-template-columns:minmax(0,1.65fr) minmax(17rem,.7fr);align-items:start;gap:1rem;display:grid}.lesson-main-column,.lesson-side-column{gap:1rem;min-width:0;display:grid}.student-card{border:1px solid var(--student-line);overflow-wrap:normal;word-break:normal;background:#fffffff0;border-radius:1rem;min-width:0;padding:1.5rem;box-shadow:0 10px 32px #0c2d4b0e}.student-card h2{margin-bottom:.75rem}.section-kicker{color:var(--student-red);text-transform:uppercase;letter-spacing:.09em;margin:0 0 .18rem;font-size:.79rem;font-weight:800}.section-heading{justify-content:space-between;align-items:flex-start;gap:1rem;display:flex}.section-count{color:var(--student-blue);background:#edf4f8;border-radius:999px;padding:.25rem .6rem;font-size:.8rem;font-weight:750}.lesson-word-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:.7rem;margin:1rem 0 1.25rem;display:grid}.lesson-word{background:#f5f7f8;border-radius:.75rem;min-width:0;padding:.9rem;display:grid}.lesson-word strong{color:var(--student-blue);font-family:Noto Serif SC,serif;font-size:1.65rem}.lesson-word span{color:var(--student-red);font-weight:650}.lesson-word small{color:#667582;font-size:.88rem}.empty-state{color:#667582;text-align:center;background:#f8fafb;border:1px dashed #cbd5dc;border-radius:.75rem;justify-content:center;align-items:center;gap:.8rem;min-height:7rem;padding:1rem;display:flex}.empty-state span{color:#9aaab5;font-family:Noto Serif SC,serif;font-size:2rem}.empty-state p{margin:0}.audio-card{grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:1rem;display:grid}.audio-card h2,.audio-card p{margin-bottom:.2rem}.audio-symbol{color:#8a98a2;background:#edf1f3;border-radius:50%;place-items:center;width:3.25rem;height:3.25rem;display:grid}.button:disabled,.audio-actions button:disabled{opacity:.62;cursor:not-allowed}.material-placeholder{text-align:center;color:#71808b;background:#f7f9fa;border-radius:.75rem;place-content:center;min-height:8rem;display:grid}.material-placeholder span{color:#99a8b1;font-size:2rem}.material-placeholder p{margin:.4rem 0 0}.homework-card .status-pill{background:#faecee;border-radius:999px;margin-bottom:.8rem;padding:.35rem .7rem}.full-width{width:100%}.words-page{max-width:58rem}.words-topline{color:#5d6f7d;justify-content:space-between;align-items:center;gap:1rem;font-weight:700;display:flex}.words-topline .back-link{margin:0}.progress-track{background:#dfe5e8;border-radius:999px;height:.5rem;margin:1rem 0 2rem;overflow:hidden}.progress-track i{border-radius:inherit;background:var(--student-red);height:100%;transition:width .2s;display:block}.words-heading{margin-bottom:1.5rem}.words-heading h1{margin-bottom:.5rem}.word-study-card{padding:clamp(1.4rem,4vw,2.5rem)}.word-primary{text-align:center;justify-items:center;display:grid}.study-hanzi{color:var(--student-blue);margin-top:1rem;font-family:Noto Serif SC,Microsoft YaHei,serif;font-size:clamp(4.5rem,11vw,7.5rem);line-height:1.05}.study-pinyin{color:var(--student-red);font-size:1.55rem;font-weight:750}.study-translation{color:#334c5f;font-size:1.2rem}.word-example{border-left:3px solid var(--student-red);background:#faf5f1;border-radius:0 .7rem .7rem 0;max-width:35rem;margin:2rem auto 1.25rem;padding:1.25rem;display:grid}.word-example strong{color:var(--student-blue);font-family:Noto Serif SC,serif;font-size:1.65rem}.word-example span{color:#53697a}.word-example small{color:#667582;margin-top:.2rem;font-size:.95rem}.audio-actions{grid-template-columns:1fr 1fr;gap:.75rem;max-width:35rem;margin:0 auto 1.25rem;display:grid}.audio-actions button{min-height:3.5rem;color:var(--student-blue);background:#f4f7f9;border:1px solid #ced8df;border-radius:.7rem;padding:.65rem .8rem;font-weight:750}.audio-actions small{color:#7b8993;font-weight:500;display:block}.study-actions{grid-template-columns:1fr 1fr;gap:.75rem;max-width:35rem;margin:0 auto;display:grid}.choice-button{cursor:pointer;border:1px solid #0000;border-radius:.8rem;justify-content:center;align-items:center;gap:.55rem;min-height:4rem;font-size:1rem;font-weight:800;display:flex}.choice-button span{font-size:1.35rem}.choice-button.known{color:#136646;background:#e8f5ef;border-color:#b8ddcc}.choice-button.review{color:#9a2637;background:#fbeaec;border-color:#ecc6cc}.choice-button:hover,.choice-button.selected{outline-offset:2px;outline:2px solid}.word-navigation{justify-content:space-between;gap:1rem;margin-top:1rem;display:flex}.text-button{min-height:2.75rem;color:var(--student-blue-2);cursor:pointer;background:0 0;border:0;padding:.5rem .8rem;font-weight:800}.text-button:disabled{color:#a8b1b7;cursor:not-allowed}.word-summary{text-align:center;max-width:42rem;margin:3rem auto 0}.summary-check{color:#fff;background:#16845b;border-radius:50%;place-items:center;width:4rem;height:4rem;margin:0 auto 1rem;font-size:2rem;display:grid}.result-grid{grid-template-columns:1fr 1fr;gap:.75rem;margin:2rem 0;display:grid}.result-grid div{background:#f4f7f8;border-radius:.8rem;padding:1rem;display:grid}.result-grid strong{color:var(--student-blue);font-size:2rem}.result-grid span{color:#667582}.summary-actions{justify-content:center;gap:.75rem;display:flex}.review-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem;display:grid}.review-word{display:grid}.review-word strong{color:var(--student-blue);font-family:Noto Serif SC,serif;font-size:2.2rem}.review-word span{color:var(--student-red);font-weight:700}.review-word small{color:#667582;font-size:.95rem}.review-return{margin-top:1rem}.student-dashboard-s01{max-width:78rem}.s01-welcome{margin-bottom:var(--ed-space-6);justify-content:space-between;align-items:flex-start;gap:var(--ed-space-5);display:flex}.s01-welcome h1{margin-bottom:var(--ed-space-2)}.s01-welcome .lead{max-width:38rem;margin-bottom:0}.s01-profile-mark{width:3.25rem;height:3.25rem;color:var(--ed-color-text-inverse);background:var(--ed-color-burgundy-700);box-shadow:0 0 0 .45rem var(--ed-color-burgundy-100);font-weight:var(--ed-font-weight-bold);border-radius:50%;flex:none;place-items:center;display:grid}.s01-dashboard-grid{gap:var(--ed-space-4);grid-template-columns:minmax(0,1.75fr) minmax(17.5rem,.72fr);align-items:start;display:grid}.s01-main-column,.s01-side-column{gap:var(--ed-space-4);min-width:0;display:grid}.s01-lesson-hero{min-width:0;padding:clamp(var(--ed-space-5), 3vw, var(--ed-space-8));border:1px solid color-mix(in srgb, var(--ed-color-navy-700) 18%, var(--ed-color-border));border-radius:var(--ed-radius-xl);gap:var(--ed-space-6);box-shadow:var(--ed-shadow-md);background:linear-gradient(125deg,#fff 0% 54%,#eef3f2 100%);grid-template-columns:minmax(0,1.3fr) minmax(11rem,.56fr);align-items:center;display:grid;overflow:hidden}.s01-lesson-copy{min-width:0}.s01-lesson-copy .dashboard-question{margin-top:var(--ed-space-4)}.s01-lesson-copy .lesson-hanzi{color:var(--ed-color-navy-900);font-size:clamp(3.4rem,7vw,5.5rem)}.s01-lesson-note{max-width:34rem;margin:var(--ed-space-3) 0 var(--ed-space-5);color:var(--ed-color-text-secondary)}.s01-lesson-art{min-height:13.5rem;padding:var(--ed-space-6) var(--ed-space-4);color:var(--ed-color-navy-900);text-align:center;background:radial-gradient(circle at 50% 35%,#fffffffa,#f1eadfb8 58%,#244e7014);border:1px solid #942f382e;border-radius:48% 52% 46% 54%/42% 48% 52% 58%;align-content:center;justify-items:center;display:grid}.s01-lesson-art span{font-family:var(--ed-font-display);letter-spacing:.06em;font-size:clamp(3.15rem,5.8vw,4.6rem);line-height:1}.s01-lesson-art small{margin-top:var(--ed-space-2);color:var(--ed-color-burgundy-700);font-weight:var(--ed-font-weight-semibold)}.s01-lesson-art i{margin-top:var(--ed-space-5);color:var(--ed-color-gold-500);font-family:var(--ed-font-display);font-size:var(--ed-font-size-md);letter-spacing:.12em;font-style:normal}.s01-section{gap:var(--ed-space-4);display:grid}.s01-section-heading{justify-content:space-between;align-items:flex-end;gap:var(--ed-space-4);display:flex}.s01-section-heading h2{color:var(--ed-color-navy-900);margin-bottom:0}.s01-section-heading>span{color:var(--ed-color-text-secondary);font-size:var(--ed-font-size-sm)}.s01-action-grid{gap:var(--ed-space-4);grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.s01-action-card{padding:var(--ed-space-4);gap:var(--ed-space-3);background:#ffffffdb;grid-template-columns:auto minmax(0,1fr);display:grid}.s01-action-card h3{margin:var(--ed-space-3) 0 var(--ed-space-1);color:var(--ed-color-navy-900);font-size:var(--ed-font-size-lg)}.s01-action-card p{margin-bottom:var(--ed-space-3);color:var(--ed-color-text-secondary);font-size:var(--ed-font-size-sm)}.s01-action-icon{border-radius:var(--ed-radius-md);color:#fff;width:2.75rem;height:2.75rem;font-size:var(--ed-font-size-lg);font-weight:var(--ed-font-weight-bold);place-items:center;display:grid}.s01-action-icon.homework{background:var(--ed-color-navy-700)}.s01-action-icon.review{background:var(--ed-color-burgundy-700)}.s01-route-card{box-shadow:none}.s01-route-steps{margin:var(--ed-space-4) 0 0;gap:var(--ed-space-3);grid-template-columns:repeat(4,minmax(0,1fr));padding:0;list-style:none;display:grid}.s01-route-steps li{min-width:0;padding:var(--ed-space-3);border:1px solid var(--ed-color-border);border-radius:var(--ed-radius-md);align-items:flex-start;gap:var(--ed-space-3);background:var(--ed-color-surface-muted);display:flex}.s01-route-steps li>span{width:1.75rem;height:1.75rem;color:var(--ed-color-text-secondary);font-size:var(--ed-font-size-xs);font-weight:var(--ed-font-weight-bold);background:#fff;border-radius:50%;flex:none;place-items:center;display:grid}.s01-route-steps li>div{min-width:0;display:grid}.s01-route-steps strong{color:var(--ed-color-navy-900);font-size:var(--ed-font-size-sm)}.s01-route-steps small{margin-top:var(--ed-space-1);color:var(--ed-color-text-secondary);font-size:var(--ed-font-size-xs)}.s01-route-steps .is-current{border-color:color-mix(in srgb, var(--ed-color-burgundy-700) 28%, var(--ed-color-border));background:var(--ed-color-burgundy-100)}.s01-route-steps .is-current>span{color:#fff;background:var(--ed-color-burgundy-700)}.s01-progress-card{border-top:3px solid var(--ed-color-navy-700)}.s01-progress-card.ui-card-padding-lg{padding:var(--ed-space-5)}.s01-progress-heading{justify-content:space-between;align-items:flex-start;gap:var(--ed-space-3);display:flex}.s01-progress-heading h2{color:var(--ed-color-navy-900);margin-bottom:0}.s01-progress-heading>strong{color:var(--ed-color-burgundy-700);font-family:var(--ed-font-display);font-size:var(--ed-font-size-2xl)}.s01-progress-track{height:.5rem;margin:var(--ed-space-4) 0;border-radius:var(--ed-radius-pill);background:var(--ed-color-cream-200);overflow:hidden}.s01-progress-track i{border-radius:inherit;background:linear-gradient(90deg, var(--ed-color-burgundy-700), var(--ed-color-gold-500));height:100%;display:block}.s01-progress-list{margin:0 0 var(--ed-space-4);display:grid}.s01-progress-list>div{padding:var(--ed-space-2) 0;border-bottom:1px solid var(--ed-color-border);justify-content:space-between;gap:var(--ed-space-3);display:flex}.s01-progress-list dt{color:var(--ed-color-text-secondary)}.s01-progress-list dd{color:var(--ed-color-navy-900);font-weight:var(--ed-font-weight-bold);margin:0}.s01-assignment-card{padding:var(--ed-space-5);background:linear-gradient(145deg, #fff 0%, var(--ed-color-warning-soft) 145%);overflow:hidden}.s01-card-glyph{float:right;margin-left:var(--ed-space-3);color:color-mix(in srgb, var(--ed-color-burgundy-700) 15%, transparent);font-family:var(--ed-font-display);font-size:4rem;line-height:.8}.s01-assignment-card h2{color:var(--ed-color-navy-900)}.s01-assignment-card>p:not(.section-kicker){color:var(--ed-color-text-secondary)}.s01-assignment-meta{margin:var(--ed-space-4) 0;justify-content:space-between;align-items:center;gap:var(--ed-space-3);color:var(--ed-color-text-secondary);font-size:var(--ed-font-size-sm);display:flex}.s01-phrase-card{padding:var(--ed-space-6);background:linear-gradient(145deg,#ffffffe6,#f1eadfe0);display:grid}.s01-phrase-card strong{margin-top:var(--ed-space-2);color:var(--ed-color-navy-900);font-size:var(--ed-font-size-xl)}.s01-phrase-card span{color:var(--ed-color-burgundy-700);font-weight:var(--ed-font-weight-semibold)}.s01-phrase-card small{margin-top:var(--ed-space-1);color:var(--ed-color-text-secondary)}.student-lesson-s02{max-width:78rem}.s02-back-link{margin-bottom:var(--ed-space-4)}.s02-hero{min-width:0;padding:clamp(var(--ed-space-6), 3vw, var(--ed-space-10));border:1px solid color-mix(in srgb, var(--ed-color-navy-700) 18%, var(--ed-color-border));border-radius:var(--ed-radius-xl);gap:var(--ed-space-8);box-shadow:var(--ed-shadow-md);background:linear-gradient(120deg,#fff 0% 56%,#eef3f2 100%);grid-template-columns:minmax(0,1.5fr) minmax(12rem,.55fr);align-items:center;display:grid;overflow:hidden}.s02-hero-copy{min-width:0}.s02-meta{align-items:center;gap:var(--ed-space-3);color:var(--ed-color-burgundy-700);font-size:var(--ed-font-size-sm);font-weight:var(--ed-font-weight-bold);letter-spacing:.08em;text-transform:uppercase;display:flex}.s02-hanzi{margin:var(--ed-space-4) 0 0;color:var(--ed-color-navy-900);font-family:var(--ed-font-display);letter-spacing:.03em;font-size:clamp(3.6rem,7vw,5.8rem);line-height:.95}.s02-pinyin{margin:var(--ed-space-3) 0 0;color:var(--ed-color-burgundy-700);font-size:var(--ed-font-size-xl);font-weight:var(--ed-font-weight-bold)}.s02-translation{margin-bottom:var(--ed-space-3);color:var(--ed-color-navy-700);font-size:var(--ed-font-size-lg)}.s02-intro{max-width:38rem;margin-bottom:var(--ed-space-5);color:var(--ed-color-text-secondary)}.s02-hero-art{isolation:isolate;aspect-ratio:3/4;width:min(100%,11.5rem);min-height:15.25rem;padding:var(--ed-space-6) var(--ed-space-5);border:1px solid color-mix(in srgb, var(--ed-color-gold-500) 58%, var(--ed-color-border));border-radius:var(--ed-radius-xl);color:var(--ed-color-navy-900);text-align:center;background:linear-gradient(155deg,#fffdf8,#f8f1e5);align-content:center;justify-self:center;justify-items:center;display:grid;position:relative}.s02-hero-art:before{content:"";z-index:-1;border:1px solid color-mix(in srgb, var(--ed-color-gold-500) 25%, transparent);border-radius:calc(var(--ed-radius-xl) - .35rem);pointer-events:none;position:absolute;inset:.45rem}.s02-hero-art span{font-family:var(--ed-font-display);font-size:clamp(3.25rem,5.5vw,4.6rem);line-height:.9;display:grid}.s02-hero-art span b{font:inherit}.s02-hero-art small{margin-top:var(--ed-space-2);color:var(--ed-color-burgundy-700);font-weight:var(--ed-font-weight-semibold)}.s02-hero-art i{margin-top:var(--ed-space-5);color:var(--ed-color-gold-500);font-family:var(--ed-font-display);letter-spacing:.12em;font-style:normal}.s02-content-grid{margin-top:var(--ed-space-5);gap:var(--ed-space-5);grid-template-columns:minmax(0,1.8fr) minmax(17.5rem,.65fr);align-items:start;display:grid}.s02-main-column,.s02-side-column{gap:var(--ed-space-5);min-width:0;display:grid}.s02-section-heading{justify-content:space-between;align-items:flex-end;gap:var(--ed-space-4);display:flex}.s02-section-heading h2{color:var(--ed-color-navy-900);margin-bottom:0}.s02-section-heading>span{color:var(--ed-color-text-secondary);font-size:var(--ed-font-size-sm)}.s02-stage-grid{margin:var(--ed-space-4) 0 0;gap:var(--ed-space-3);grid-template-columns:repeat(3,minmax(0,1fr));padding:0;list-style:none;display:grid}.s02-stage{min-width:0}.s02-stage>a,.s02-stage>div{min-height:9.5rem;padding:var(--ed-space-4);border:1px solid var(--ed-color-border);border-radius:var(--ed-radius-lg);box-shadow:var(--ed-shadow-sm);background:#ffffffd1;align-content:start;display:grid;position:relative}.s02-stage>a{transition:transform var(--ed-transition), box-shadow var(--ed-transition)}.s02-stage>a:hover{box-shadow:var(--ed-shadow-md);transform:translateY(-2px)}.s02-stage-number{top:var(--ed-space-3);right:var(--ed-space-3);aspect-ratio:1;width:1.6rem;color:var(--ed-color-text-secondary);background:var(--ed-color-surface-muted);font-size:var(--ed-font-size-xs);font-weight:var(--ed-font-weight-bold);border-radius:50%;flex:none;place-items:center;display:grid;position:absolute}.s02-stage-icon{width:2.6rem;height:2.6rem;margin-bottom:var(--ed-space-3);border-radius:var(--ed-radius-md);color:var(--ed-color-navy-700);background:var(--ed-color-info-soft);font-family:var(--ed-font-display);font-size:var(--ed-font-size-lg);place-items:center;display:grid}.s02-stage strong{color:var(--ed-color-navy-900)}.s02-stage small{margin-top:var(--ed-space-1);color:var(--ed-color-text-secondary)}.s02-stage-status{padding-top:var(--ed-space-3);color:var(--ed-color-text-secondary);font-size:var(--ed-font-size-xs);font-weight:var(--ed-font-weight-bold);text-transform:uppercase;letter-spacing:.06em;margin-top:auto}.s02-stage.is-current>a{border-color:color-mix(in srgb, var(--ed-color-burgundy-700) 36%, var(--ed-color-border));background:linear-gradient(145deg, #fff, var(--ed-color-burgundy-100))}.s02-stage.is-current .s02-stage-icon{color:#fff;background:var(--ed-color-burgundy-700)}.s02-stage.is-current .s02-stage-status{color:var(--ed-color-burgundy-700)}.s02-stage.is-submitted .s02-stage-icon{color:var(--ed-color-success);background:var(--ed-color-success-soft)}.s02-stage.is-submitted .s02-stage-status{color:var(--ed-color-success)}.s02-next-card{gap:var(--ed-space-4);grid-template-columns:auto minmax(0,1fr) auto;align-items:center;display:grid}.s02-next-card h2{margin-bottom:var(--ed-space-1);color:var(--ed-color-navy-900)}.s02-next-card p:last-child{color:var(--ed-color-text-secondary);margin-bottom:0}.s02-next-icon{border-radius:var(--ed-radius-lg);color:#fff;background:var(--ed-color-burgundy-700);width:3.4rem;height:3.4rem;font-family:var(--ed-font-display);font-size:var(--ed-font-size-xl);place-items:center;display:grid}.s02-phrase-grid{gap:var(--ed-space-3);grid-template-columns:repeat(3,minmax(0,1fr));display:grid}.s02-phrase-grid>div{min-width:0;padding:var(--ed-space-3);border-radius:var(--ed-radius-md);background:#ffffffb8;display:grid}.s02-phrase-grid strong{color:var(--ed-color-navy-900);font-family:var(--ed-font-display);font-size:var(--ed-font-size-lg)}.s02-phrase-grid span{color:var(--ed-color-burgundy-700);font-size:var(--ed-font-size-sm);font-weight:var(--ed-font-weight-semibold)}.s02-phrase-grid small{margin-top:var(--ed-space-1);color:var(--ed-color-text-secondary)}.s02-progress-card{border-top:3px solid var(--ed-color-navy-700)}.s02-progress-ring{aspect-ratio:1;width:8rem;max-width:100%;margin:var(--ed-space-5) auto;background:conic-gradient(var(--ed-color-burgundy-600) var(--s02-progress), var(--ed-color-cream-200) 0);border-radius:50%;flex:none;place-self:center;place-items:center;display:grid}.s02-progress-ring:before{content:"";aspect-ratio:1;background:#fff;border-radius:50%;grid-area:1/1;width:75%}.s02-progress-ring span{z-index:1;color:var(--ed-color-navy-900);font-family:var(--ed-font-display);font-size:var(--ed-font-size-2xl);font-weight:var(--ed-font-weight-bold);grid-area:1/1}.s02-progress-list{margin:0;display:grid}.s02-progress-list>div{padding:var(--ed-space-2) 0;border-bottom:1px solid var(--ed-color-border);justify-content:space-between;gap:var(--ed-space-3);display:flex}.s02-progress-list>div:last-child{border-bottom:0}.s02-progress-list dt{color:var(--ed-color-text-secondary)}.s02-progress-list dd{color:var(--ed-color-navy-900);font-weight:var(--ed-font-weight-bold);margin:0}.s02-note-card{gap:var(--ed-space-3);grid-template-columns:auto minmax(0,1fr);align-items:center;display:grid}.s02-note-card>span{color:var(--ed-color-gold-500);font-family:var(--ed-font-display);font-size:2.5rem}.s02-note-card p{color:var(--ed-color-text-secondary);margin:0}.s02-homework-card h2{color:var(--ed-color-navy-900)}.s02-homework-card>p:not(.section-kicker){color:var(--ed-color-text-secondary)}.student-words-s03{width:calc(100% + min(6rem,10vw));max-width:86rem;margin-inline:max(-3rem,-5vw)}.s03-topline{justify-content:space-between;align-items:center;gap:var(--ed-space-4);color:var(--ed-color-text-secondary);font-size:var(--ed-font-size-sm);font-weight:var(--ed-font-weight-semibold);display:flex}.s03-topline .back-link{margin:0}.s03-progress-track{height:.45rem;margin:var(--ed-space-3) 0 var(--ed-space-5);border-radius:var(--ed-radius-pill);background:var(--ed-color-cream-200);overflow:hidden}.s03-progress-track i{border-radius:inherit;background:linear-gradient(90deg, var(--ed-color-burgundy-700), var(--ed-color-burgundy-600));height:100%;transition:width var(--ed-transition);display:block}.s03-heading{margin-bottom:var(--ed-space-5)}.s03-heading-meta{align-items:center;gap:var(--ed-space-3);color:var(--ed-color-burgundy-700);font-size:var(--ed-font-size-sm);font-weight:var(--ed-font-weight-bold);display:flex}.s03-heading h1{margin:var(--ed-space-2) 0 var(--ed-space-1);color:var(--ed-color-navy-900)}.s03-heading>p{color:var(--ed-color-text-secondary);margin:0}.s03-layout{gap:var(--ed-space-6);grid-template-columns:minmax(0,1.85fr) minmax(19rem,.72fr);align-items:start;display:grid}.s03-main-column,.s03-side-column{gap:var(--ed-space-4);min-width:0;display:grid}.s03-word-card{border-top:3px solid var(--ed-color-burgundy-700)}.s03-word-card.ui-card-padding-lg{padding:var(--ed-space-10)}.s03-word-card-topline{justify-content:space-between;align-items:center;gap:var(--ed-space-3);display:flex}.s03-word-primary{padding:var(--ed-space-3) 0 var(--ed-space-4);text-align:center;justify-items:center;display:grid}.s03-word-primary>strong{color:var(--ed-color-navy-900);font-family:var(--ed-font-display);font-size:clamp(6.4rem,11.5vw,9.75rem);font-weight:var(--ed-font-weight-medium);line-height:1}.s03-word-primary>span{margin-top:var(--ed-space-2);color:var(--ed-color-burgundy-700);font-size:var(--ed-font-size-2xl);font-weight:var(--ed-font-weight-bold)}.s03-word-primary>small{color:var(--ed-color-navy-700);font-size:var(--ed-font-size-xl)}.s03-example{padding:var(--ed-space-4);border-left:3px solid var(--ed-color-burgundy-700);border-radius:0 var(--ed-radius-md) var(--ed-radius-md) 0;gap:var(--ed-space-4);background:var(--ed-color-surface-muted);grid-template-columns:minmax(0,1fr) auto;align-items:center;display:grid}.s03-example>div{min-width:0;display:grid}.s03-example strong{color:var(--ed-color-navy-900);font-family:var(--ed-font-display);font-size:var(--ed-font-size-xl)}.s03-example div>span{color:var(--ed-color-burgundy-700);font-weight:var(--ed-font-weight-semibold)}.s03-example div>small{margin-top:var(--ed-space-1);color:var(--ed-color-text-secondary)}.s03-example button{min-width:9rem;min-height:var(--ed-control-height-lg);padding:var(--ed-space-2) var(--ed-space-3);border:1px solid var(--ed-color-border);border-radius:var(--ed-radius-md);color:var(--ed-color-text-secondary);cursor:not-allowed;background:#fff}.s03-example button>span{color:var(--ed-color-burgundy-600)}.s03-example button>small{margin-top:var(--ed-space-1);display:block}.s03-prompt{margin:var(--ed-space-5) 0 var(--ed-space-3);text-align:center;display:grid}.s03-prompt strong{color:var(--ed-color-navy-900);font-size:var(--ed-font-size-lg)}.s03-prompt span{color:var(--ed-color-text-secondary);font-size:var(--ed-font-size-sm)}.s03-study-actions{gap:var(--ed-space-5);grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.s03-choice{min-height:5rem;padding:var(--ed-space-3) var(--ed-space-4);border-radius:var(--ed-radius-lg);column-gap:var(--ed-space-3);text-align:left;cursor:pointer;transition:transform var(--ed-transition), box-shadow var(--ed-transition), border-color var(--ed-transition);border:1px solid #0000;grid-template-columns:auto minmax(0,1fr);align-items:center;display:grid}.s03-choice>span{aspect-ratio:1;width:2.35rem;font-size:var(--ed-font-size-lg);font-weight:var(--ed-font-weight-bold);border-radius:50%;grid-row:span 2;place-items:center;display:grid}.s03-choice>strong{align-self:end}.s03-choice>small{opacity:.78;align-self:start}.s03-choice.known{color:var(--ed-color-success);border-color:color-mix(in srgb, var(--ed-color-success) 24%, var(--ed-color-border));background:var(--ed-color-success-soft)}.s03-choice.known>span{color:#fff;background:var(--ed-color-success)}.s03-choice.review{color:var(--ed-color-danger);border-color:color-mix(in srgb, var(--ed-color-danger) 24%, var(--ed-color-border));background:var(--ed-color-danger-soft)}.s03-choice.review>span{color:#fff;background:var(--ed-color-danger)}.s03-choice:hover{box-shadow:var(--ed-shadow-sm);transform:translateY(-1px)}.s03-choice.selected{box-shadow:0 0 0 2px color-mix(in srgb, currentColor 18%, transparent);border-color:currentColor}.s03-word-navigation{justify-content:space-between;gap:var(--ed-space-5);display:flex}.s03-word-navigation .ui-button{min-width:10rem}.s03-progress-card{border-top:3px solid var(--ed-color-navy-700);min-width:0}.s03-progress-card.ui-card-padding-md{padding:var(--ed-space-8)}.s03-progress-count{margin:var(--ed-space-4) 0;align-items:center;gap:var(--ed-space-3);display:flex}.s03-progress-count>strong{color:var(--ed-color-burgundy-700);font-family:var(--ed-font-display);font-size:3.25rem;line-height:1}.s03-progress-count>span{color:var(--ed-color-navy-900);font-weight:var(--ed-font-weight-bold)}.s03-progress-count small{color:var(--ed-color-text-secondary);font-weight:var(--ed-font-weight-medium);display:block}.s03-word-list{gap:var(--ed-space-2);margin:0;padding:0;list-style:none;display:grid}.s03-word-list li{padding:var(--ed-space-2);border-radius:var(--ed-radius-md);gap:var(--ed-space-3);border:1px solid #0000;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;display:grid}.s03-word-list li.is-current{border-color:var(--ed-color-border);background:var(--ed-color-surface-muted)}.s03-word-list li>span,.s03-word-list li>i{aspect-ratio:1;width:1.75rem;font-size:var(--ed-font-size-xs);border-radius:50%;flex:none;place-items:center;font-style:normal;display:grid}.s03-word-list li>span{color:var(--ed-color-text-secondary);background:var(--ed-color-cream-200);font-weight:var(--ed-font-weight-bold)}.s03-word-list li>div{align-items:baseline;gap:var(--ed-space-2);min-width:0;display:flex}.s03-word-list li strong{color:var(--ed-color-navy-900);font-family:var(--ed-font-display);font-size:var(--ed-font-size-lg)}.s03-word-list li small{color:var(--ed-color-text-secondary)}.s03-word-list li>i{color:var(--ed-color-text-secondary);border:1px solid var(--ed-color-border)}.s03-word-list li.is-known>i{color:#fff;border-color:var(--ed-color-success);background:var(--ed-color-success)}.s03-word-list li.is-review>i{color:#fff;border-color:var(--ed-color-danger);background:var(--ed-color-danger)}.s03-tip-card{gap:var(--ed-space-3);grid-template-columns:auto minmax(0,1fr);align-items:center;display:grid}.s03-tip-card>span{color:var(--ed-color-gold-500);font-family:var(--ed-font-display);font-size:2.5rem}.s03-tip-card p{color:var(--ed-color-text-secondary);margin:0}.s03-tip-card strong{color:var(--ed-color-navy-900);display:block}.s03-summary{max-width:42rem;margin:var(--ed-space-8) auto 0;text-align:center}.s03-summary-check{aspect-ratio:1;width:4rem;margin:0 auto var(--ed-space-4);color:#fff;background:var(--ed-color-success);font-size:var(--ed-font-size-2xl);border-radius:50%;place-items:center;display:grid}.s03-result-grid{margin:var(--ed-space-6) 0;gap:var(--ed-space-4);grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.s03-result-grid>div{padding:var(--ed-space-4);border-radius:var(--ed-radius-md);background:var(--ed-color-surface-muted);display:grid}.s03-result-grid strong{color:var(--ed-color-navy-900);font-size:var(--ed-font-size-2xl)}.s03-result-grid span{color:var(--ed-color-text-secondary)}.s03-summary-actions{justify-content:center;gap:var(--ed-space-4);display:flex}.student-grammar-s04{width:calc(100% + min(6rem,10vw));max-width:88rem;margin-inline:max(-3rem,-5vw)}.s04-topline{margin-bottom:var(--ed-space-3);justify-content:space-between;align-items:center;gap:var(--ed-space-4);color:var(--ed-color-text-secondary);font-size:var(--ed-font-size-sm);display:flex}.s04-hero{min-height:10.5rem;margin-bottom:var(--ed-space-6);padding:var(--ed-space-6) var(--ed-space-8);border:1px solid var(--ed-color-border);border-radius:var(--ed-radius-xl);background:linear-gradient(120deg, #fffffff7 0 55%, #f5e5e3d6), radial-gradient(circle at 86% 10%, var(--ed-color-info-soft), transparent 42%);box-shadow:var(--ed-shadow-sm);grid-template-columns:minmax(0,1fr) 18rem;align-items:center;display:grid;position:relative;overflow:hidden}.s04-hero:after{content:"文";color:color-mix(in srgb, var(--ed-color-burgundy-700) 8%, transparent);font-family:var(--ed-font-display);font-size:12rem;line-height:1;position:absolute;top:-3.2rem;right:3rem}.s04-hero-copy{z-index:1;position:relative}.s04-heading-meta{margin-bottom:var(--ed-space-2);align-items:center;gap:var(--ed-space-3);color:var(--ed-color-text-secondary);font-size:var(--ed-font-size-sm);display:flex}.s04-hero h1{margin-bottom:var(--ed-space-1);color:var(--ed-color-navy-900);font-family:var(--ed-font-display);font-size:clamp(2.5rem,4vw,4rem);line-height:.98}.s04-hero p{color:var(--ed-color-navy-700);font-size:var(--ed-font-size-lg);margin:0}.s04-hero-note{min-height:7rem;padding:var(--ed-space-4);z-index:1;text-align:center;box-shadow:var(--ed-shadow-sm);background:#ffffffb8;border:1px solid #fffc;border-radius:48% 52% 46% 54%/56% 42% 58% 44%;place-content:center;display:grid;position:relative;transform:rotate(-2deg)}.s04-hero-note strong{color:var(--ed-color-burgundy-700);font-family:var(--ed-font-display);font-size:var(--ed-font-size-3xl)}.s04-hero-note span{color:var(--ed-color-text-secondary);font-size:var(--ed-font-size-sm)}.s04-layout{gap:var(--ed-space-6);grid-template-columns:minmax(0,1fr) 19rem;align-items:start;display:grid}.s04-main-column,.s04-side-column,.s04-model-list{gap:var(--ed-space-5);display:grid}.s04-side-column{top:var(--ed-space-5);position:sticky}.s04-model-card{border-top:3px solid var(--ed-color-burgundy-700)}.s04-model-heading{gap:var(--ed-space-4);grid-template-columns:auto minmax(0,1fr) auto;align-items:start;display:grid}.s04-model-number{aspect-ratio:1;color:#fff;background:linear-gradient(145deg, var(--ed-color-burgundy-600), var(--ed-color-burgundy-800));width:2.75rem;font-family:var(--ed-font-display);font-size:var(--ed-font-size-xl);font-weight:var(--ed-font-weight-bold);border-radius:50%;place-items:center;display:grid;box-shadow:0 6px 14px #942f3838}.s04-model-heading h2{margin:0 0 var(--ed-space-1);color:var(--ed-color-navy-900);font-size:var(--ed-font-size-xl)}.s04-model-heading h2 span{font-family:var(--ed-font-display);font-size:1.6rem}.s04-model-heading p:last-child{color:var(--ed-color-text-secondary);margin:0}.s04-model-glyph{color:color-mix(in srgb, var(--ed-color-gold-500) 58%, var(--ed-color-cream-200));font-family:var(--ed-font-display);font-size:3rem;line-height:1}.s04-model-body{margin-top:var(--ed-space-4);gap:var(--ed-space-4);grid-template-columns:minmax(15rem,.8fr) minmax(0,1.2fr);display:grid}.s04-pattern-panel{padding:var(--ed-space-4);border-radius:var(--ed-radius-md);background:linear-gradient(135deg, var(--ed-color-burgundy-100), #fff8f5)}.s04-pattern-panel>span{color:var(--ed-color-burgundy-800);font-size:var(--ed-font-size-xs);font-weight:var(--ed-font-weight-bold);letter-spacing:.08em;text-transform:uppercase}.s04-pattern-row{margin-top:var(--ed-space-3);align-items:center;gap:var(--ed-space-2);flex-wrap:wrap;display:flex}.s04-pattern-row>span{align-items:center;gap:var(--ed-space-2);display:flex}.s04-pattern-row b{padding:var(--ed-space-2) var(--ed-space-3);border:1px solid color-mix(in srgb, var(--ed-color-burgundy-700) 18%, transparent);border-radius:var(--ed-radius-sm);color:var(--ed-color-navy-900);font-size:var(--ed-font-size-sm);background:#fffc}.s04-pattern-row i{color:var(--ed-color-burgundy-700);font-style:normal;font-weight:var(--ed-font-weight-bold)}.s04-examples{gap:var(--ed-space-2);display:grid}.s04-example-row{min-width:0;padding:var(--ed-space-2) var(--ed-space-3);border:1px solid var(--ed-color-border);border-radius:var(--ed-radius-md);gap:var(--ed-space-3);background:var(--ed-color-surface-muted);grid-template-columns:auto minmax(0,1fr);align-items:center;display:grid}.s04-example-row button{aspect-ratio:1;width:2.45rem;color:var(--ed-color-burgundy-700);background:var(--ed-color-burgundy-100);font-size:var(--ed-font-size-lg);cursor:not-allowed;opacity:.75;border:0;border-radius:50%}.s04-example-row div{min-width:0;display:grid}.s04-example-row strong{color:var(--ed-color-navy-900);font-family:var(--ed-font-display);font-size:1.35rem;line-height:1.2}.s04-example-row span{color:var(--ed-color-navy-700);font-size:var(--ed-font-size-sm)}.s04-example-row small{color:var(--ed-color-text-secondary)}.s04-practice-area{margin-top:var(--ed-space-4);align-items:stretch;gap:var(--ed-space-3);display:flex}.s04-practice-button{flex:none}.s04-practice-prompt{min-width:0;padding:var(--ed-space-3) var(--ed-space-4);border-radius:var(--ed-radius-md);gap:var(--ed-space-3);background:var(--ed-color-info-soft);flex:1;grid-template-columns:auto minmax(0,1fr);align-items:center;display:grid}.s04-practice-prompt>span{aspect-ratio:1;color:#fff;background:var(--ed-color-info);width:2rem;font-family:var(--ed-font-display);border-radius:50%;place-items:center;display:grid}.s04-practice-prompt p{color:var(--ed-color-navy-700);margin:0}.s04-practice-prompt strong{color:var(--ed-color-navy-900);display:block}.s04-bottom-navigation{padding-top:var(--ed-space-2);gap:var(--ed-space-5);grid-template-columns:auto minmax(12rem,1fr) auto;align-items:center;display:grid}.s04-bottom-navigation>div{gap:var(--ed-space-2);color:var(--ed-color-text-secondary);text-align:center;font-size:var(--ed-font-size-sm);display:grid}.s04-bottom-navigation i{border-radius:var(--ed-radius-pill);background:var(--ed-color-cream-200);height:.4rem;overflow:hidden}.s04-bottom-navigation i b{border-radius:inherit;background:var(--ed-color-burgundy-700);width:33.333%;height:100%;display:block}.s04-progress-card h2,.s04-remember-card h2{color:var(--ed-color-navy-900);margin-bottom:0}.s04-stage-count{margin:var(--ed-space-3) 0 var(--ed-space-4);align-items:center;gap:var(--ed-space-3);display:flex}.s04-stage-count>strong{color:var(--ed-color-burgundy-700);font-family:var(--ed-font-display);font-size:3.2rem;line-height:1}.s04-stage-count>span{color:var(--ed-color-navy-900);font-weight:var(--ed-font-weight-bold);display:grid}.s04-stage-count small{color:var(--ed-color-text-secondary);font-weight:var(--ed-font-weight-medium)}.s04-progress-card ol{gap:var(--ed-space-1);display:grid}.s04-progress-card li{min-height:2.4rem;padding:var(--ed-space-2);border-radius:var(--ed-radius-sm);gap:var(--ed-space-2);color:var(--ed-color-text-secondary);grid-template-columns:auto minmax(0,1fr) auto;align-items:center;display:grid}.s04-progress-card li>span{aspect-ratio:1;border:1px solid var(--ed-color-border-strong);width:1.65rem;font-size:var(--ed-font-size-xs);border-radius:50%;place-items:center;display:grid}.s04-progress-card li strong{font-size:var(--ed-font-size-sm)}.s04-progress-card li small{font-size:var(--ed-font-size-xs)}.s04-progress-card li.is-complete{color:var(--ed-color-success)}.s04-progress-card li.is-complete>span{color:#fff;border-color:var(--ed-color-success);background:var(--ed-color-success)}.s04-progress-card li.is-current{color:var(--ed-color-burgundy-800);background:var(--ed-color-burgundy-100)}.s04-progress-card li.is-current>span{color:#fff;border-color:var(--ed-color-burgundy-700);background:var(--ed-color-burgundy-700)}.s04-remember-title{margin-bottom:var(--ed-space-4);align-items:center;gap:var(--ed-space-3);display:flex}.s04-remember-title>span{aspect-ratio:1;width:2.5rem;color:var(--ed-color-warning);background:var(--ed-color-warning-soft);font-family:var(--ed-font-display);border-radius:50%;place-items:center;display:grid}.s04-sentence-formula{gap:var(--ed-space-2);flex-wrap:wrap;display:flex}.s04-sentence-formula>span{padding:var(--ed-space-2);border:1px solid color-mix(in srgb, var(--ed-color-burgundy-700) 16%, var(--ed-color-border));border-radius:var(--ed-radius-sm);text-align:center;background:#ffffffc7;flex:4.5rem;display:grid;position:relative}.s04-sentence-formula small{color:var(--ed-color-text-secondary);font-size:.65rem}.s04-sentence-formula strong{color:var(--ed-color-navy-900);font-family:var(--ed-font-display);font-size:var(--ed-font-size-lg)}.s04-sentence-formula i{z-index:1;color:var(--ed-color-burgundy-700);font-style:normal;font-weight:var(--ed-font-weight-bold);position:absolute;top:50%;right:-.55rem;transform:translateY(-50%)}.s04-formula-pinyin{margin:var(--ed-space-3) 0 var(--ed-space-1);color:var(--ed-color-navy-700);font-size:var(--ed-font-size-sm)}.s04-formula-translation{color:var(--ed-color-text-secondary);font-size:var(--ed-font-size-sm);margin:0}.s04-motivation-card{gap:var(--ed-space-3);grid-template-columns:auto minmax(0,1fr);align-items:center;display:grid}.s04-motivation-card>span{color:var(--ed-color-success);font-family:var(--ed-font-display);font-size:2.5rem}.s04-motivation-card p{color:var(--ed-color-text-secondary);margin:0}.s04-motivation-card strong{color:var(--ed-color-navy-900);display:block}.student-dialogue-s05{width:calc(100% + min(6rem,10vw));max-width:88rem;margin-inline:max(-3rem,-5vw)}.s05-topline{margin-bottom:var(--ed-space-3);justify-content:space-between;align-items:center;gap:var(--ed-space-4);color:var(--ed-color-text-secondary);font-size:var(--ed-font-size-sm);display:flex}.s05-topline .back-link{margin:0}.s05-hero{min-height:10.5rem;padding:var(--ed-space-6) var(--ed-space-8);border:1px solid var(--ed-color-border);border-radius:var(--ed-radius-xl);gap:var(--ed-space-6);background:linear-gradient(120deg, #fff 0 58%, #e8f1f7e0), linear-gradient(160deg, transparent, var(--ed-color-burgundy-100));box-shadow:var(--ed-shadow-sm);grid-template-columns:minmax(0,1fr) 22rem;align-items:center;display:grid;overflow:hidden}.s05-heading-meta{margin-bottom:var(--ed-space-2);align-items:center;gap:var(--ed-space-3);color:var(--ed-color-text-secondary);font-size:var(--ed-font-size-sm);display:flex}.s05-hero h1{margin-bottom:var(--ed-space-1);color:var(--ed-color-navy-900);font-size:clamp(2.7rem,4vw,4rem)}.s05-hero p{color:var(--ed-color-navy-700);font-size:var(--ed-font-size-lg);margin:0}.s05-hero blockquote{padding:var(--ed-space-4) var(--ed-space-5);border-radius:var(--ed-radius-lg);color:var(--ed-color-navy-700);font-family:var(--ed-font-display);font-size:var(--ed-font-size-lg);background:#ffffffb3;margin:0;font-style:italic;position:relative}.s05-hero blockquote span{left:var(--ed-space-2);color:var(--ed-color-burgundy-600);font-size:3rem;line-height:1;position:absolute;top:-.4rem}.s05-controls{margin:var(--ed-space-4) 0;padding:var(--ed-space-2);border:1px solid var(--ed-color-border);border-radius:var(--ed-radius-lg);justify-content:space-between;align-items:center;gap:var(--ed-space-4);background:#ffffffc7;display:flex}.s05-mode-tabs{gap:var(--ed-space-1);display:flex}.s05-mode-tabs button{min-height:var(--ed-control-height-md);padding:var(--ed-space-2) var(--ed-space-4);border-radius:var(--ed-radius-md);align-items:center;gap:var(--ed-space-2);color:var(--ed-color-navy-700);font-weight:var(--ed-font-weight-bold);cursor:pointer;background:0 0;border:0;display:inline-flex}.s05-mode-tabs button span{font-family:var(--ed-font-display)}.s05-mode-tabs button.is-active{color:#fff;background:var(--ed-color-burgundy-700)}.s05-display-controls{align-items:center;gap:var(--ed-space-4);color:var(--ed-color-text-secondary);font-size:var(--ed-font-size-sm);display:flex}.s05-display-controls label{align-items:center;gap:var(--ed-space-2);color:var(--ed-color-navy-700);font-weight:var(--ed-font-weight-semibold);cursor:pointer;display:flex}.s05-display-controls input{aspect-ratio:1;width:1.05rem;accent-color:var(--ed-color-success)}.s05-audio-status{padding:var(--ed-space-1) var(--ed-space-3);border-radius:var(--ed-radius-pill);color:var(--ed-color-text-secondary);background:var(--ed-color-surface-muted)}.s05-layout{gap:var(--ed-space-6);grid-template-columns:minmax(0,1.75fr) 20rem;align-items:start;display:grid}.s05-main-column,.s05-side-column{gap:var(--ed-space-5);min-width:0;display:grid}.s05-side-column{top:var(--ed-space-5);position:sticky}.s05-dialogue-card{border-top:3px solid var(--ed-color-burgundy-700)}.s05-dialogue-heading{margin-bottom:var(--ed-space-4);justify-content:space-between;align-items:center;gap:var(--ed-space-4);display:flex}.s05-dialogue-heading h2{color:var(--ed-color-navy-900);margin:0}.s05-dialogue-heading button{min-height:var(--ed-control-height-md);padding:var(--ed-space-2) var(--ed-space-3);border:1px solid var(--ed-color-border);border-radius:var(--ed-radius-md);color:var(--ed-color-text-secondary);background:var(--ed-color-surface-muted);cursor:not-allowed}.s05-dialogue-list{gap:var(--ed-space-2);display:grid}.s05-dialogue-turn{min-width:0;padding:var(--ed-space-3);border-radius:var(--ed-radius-md);gap:var(--ed-space-3);grid-template-columns:auto 5rem auto minmax(0,1fr);align-items:center;display:grid}.s05-dialogue-turn.is-anna{background:color-mix(in srgb, var(--ed-color-burgundy-100) 48%, #fff)}.s05-dialogue-turn.is-liming{background:color-mix(in srgb, var(--ed-color-info-soft) 58%, #fff)}.s05-speaker-mark{aspect-ratio:1;color:#fff;width:2.6rem;font-family:var(--ed-font-display);font-size:var(--ed-font-size-lg);border-radius:50%;place-items:center;display:grid}.is-anna .s05-speaker-mark{background:var(--ed-color-burgundy-700)}.is-liming .s05-speaker-mark{background:var(--ed-color-navy-700)}.s05-speaker-name{color:var(--ed-color-navy-900);font-weight:var(--ed-font-weight-bold)}.s05-dialogue-turn>button,.s05-line-meta button{aspect-ratio:1;border:1px solid var(--ed-color-border);width:2.45rem;color:var(--ed-color-burgundy-600);font-size:var(--ed-font-size-lg);cursor:not-allowed;background:#fff;border-radius:50%}.s05-turn-text{min-width:0;display:grid}.s05-turn-text strong{color:var(--ed-color-navy-900);font-family:var(--ed-font-display);font-size:1.42rem;line-height:1.25}.s05-turn-text span{color:var(--ed-color-navy-700);font-size:var(--ed-font-size-sm)}.s05-turn-text small{color:var(--ed-color-text-secondary)}.s05-line-grid{gap:var(--ed-space-4);grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.s05-line-card{align-content:start;display:grid}.s05-line-meta{gap:var(--ed-space-3);grid-template-columns:auto minmax(0,1fr) auto;align-items:center;display:grid}.s05-line-meta>span{aspect-ratio:1;width:1.8rem;color:var(--ed-color-text-secondary);background:var(--ed-color-cream-200);font-size:var(--ed-font-size-xs);font-weight:var(--ed-font-weight-bold);border-radius:50%;place-items:center;display:grid}.s05-line-meta strong{color:var(--ed-color-navy-900)}.s05-line-card>p{margin:var(--ed-space-4) 0 var(--ed-space-1);color:var(--ed-color-navy-900);font-family:var(--ed-font-display);font-size:var(--ed-font-size-xl);font-weight:var(--ed-font-weight-semibold)}.s05-line-card>span{color:var(--ed-color-navy-700)}.s05-line-card>small{margin-top:var(--ed-space-1);color:var(--ed-color-text-secondary)}.s05-role-card{border-top:3px solid var(--ed-color-burgundy-700)}.s05-role-heading{justify-content:space-between;align-items:flex-start;gap:var(--ed-space-4);display:flex}.s05-role-heading h2{color:var(--ed-color-navy-900);margin:0}.s05-role-switch{padding:var(--ed-space-1);border-radius:var(--ed-radius-md);background:var(--ed-color-surface-muted);display:flex}.s05-role-switch button{min-height:var(--ed-control-height-sm);padding-inline:var(--ed-space-4);border-radius:var(--ed-radius-sm);color:var(--ed-color-text-secondary);cursor:pointer;background:0 0;border:0}.s05-role-switch button.is-active{color:#fff;background:var(--ed-color-burgundy-700)}.s05-role-intro{padding:var(--ed-space-3) var(--ed-space-4);border-left:3px solid var(--ed-color-info);border-radius:0 var(--ed-radius-md) var(--ed-radius-md) 0;color:var(--ed-color-navy-700);background:var(--ed-color-info-soft)}.s05-role-turns{gap:var(--ed-space-4);display:grid}.s05-role-turns article{padding:var(--ed-space-4);border:1px solid var(--ed-color-border);border-radius:var(--ed-radius-lg);gap:var(--ed-space-4);grid-template-columns:auto minmax(0,.9fr) minmax(0,1fr);align-items:stretch;display:grid}.s05-practice-number{aspect-ratio:1;color:#fff;background:var(--ed-color-burgundy-700);width:2rem;min-width:2rem;max-width:2rem;height:2rem;min-height:2rem;max-height:2rem;font-weight:var(--ed-font-weight-bold);border-radius:50%;flex:0 0 2rem;place-self:start;place-items:center;line-height:1;display:grid}.s05-partner-line,.s05-own-line{padding:var(--ed-space-3);border-radius:var(--ed-radius-md);align-content:start;display:grid}.s05-partner-line{background:var(--ed-color-surface-muted)}.s05-own-line{background:var(--ed-color-burgundy-100)}.s05-partner-line small,.s05-own-line small{color:var(--ed-color-text-secondary);font-size:var(--ed-font-size-xs);font-weight:var(--ed-font-weight-bold);text-transform:uppercase;letter-spacing:.05em}.s05-partner-line strong,.s05-own-line strong{color:var(--ed-color-navy-900);font-family:var(--ed-font-display);font-size:var(--ed-font-size-lg)}.s05-partner-line span,.s05-own-line span{color:var(--ed-color-navy-700);font-size:var(--ed-font-size-sm)}.s05-own-line p{margin:var(--ed-space-2) 0;color:var(--ed-color-text-secondary)}.s05-own-line i{color:var(--ed-color-text-secondary);font-size:var(--ed-font-size-sm);font-style:normal}.s05-own-line button{width:max-content;margin-top:var(--ed-space-3);padding:var(--ed-space-1) var(--ed-space-3);border:1px solid color-mix(in srgb, var(--ed-color-burgundy-700) 25%, var(--ed-color-border));border-radius:var(--ed-radius-pill);color:var(--ed-color-burgundy-800);font-size:var(--ed-font-size-xs);font-weight:var(--ed-font-weight-bold);cursor:pointer;background:#fff}.s05-variation-block{margin-top:var(--ed-space-5);padding:var(--ed-space-4);border-radius:var(--ed-radius-lg);background:var(--ed-color-surface-muted)}.s05-variation-block h3{margin:0 0 var(--ed-space-3);color:var(--ed-color-navy-900)}.s05-variation-block>div{gap:var(--ed-space-2);flex-wrap:wrap;display:flex}.s05-variation-block>div span{padding:var(--ed-space-2) var(--ed-space-3);border:1px solid var(--ed-color-border);border-radius:var(--ed-radius-pill);color:var(--ed-color-navy-700);font-family:var(--ed-font-display);background:#fff}.s05-bottom-navigation{gap:var(--ed-space-5);grid-template-columns:auto minmax(12rem,1fr) auto;align-items:center;display:grid}.s05-bottom-navigation>div{gap:var(--ed-space-2);color:var(--ed-color-text-secondary);text-align:center;font-size:var(--ed-font-size-sm);display:grid}.s05-bottom-navigation i{border-radius:var(--ed-radius-pill);background:var(--ed-color-cream-200);height:.4rem;overflow:hidden}.s05-bottom-navigation i b{border-radius:inherit;background:var(--ed-color-burgundy-700);width:50%;height:100%;display:block}.s05-expressions-card h2{color:var(--ed-color-navy-900)}.s05-expressions-card>div{gap:var(--ed-space-2);display:grid}.s05-expressions-card article{padding:var(--ed-space-2) 0;border-bottom:1px solid var(--ed-color-border);display:grid}.s05-expressions-card article:last-child{border-bottom:0}.s05-expressions-card strong{color:var(--ed-color-navy-900);font-family:var(--ed-font-display);font-size:var(--ed-font-size-lg)}.s05-expressions-card span{color:var(--ed-color-burgundy-700);font-size:var(--ed-font-size-sm)}.s05-expressions-card small{color:var(--ed-color-text-secondary)}.s05-progress-card{border-top:3px solid var(--ed-color-navy-700)}.s05-stage-count{margin:var(--ed-space-3) 0;align-items:center;gap:var(--ed-space-3);display:flex}.s05-stage-count>strong{color:var(--ed-color-burgundy-700);font-family:var(--ed-font-display);font-size:3.2rem;line-height:1}.s05-stage-count>span{color:var(--ed-color-navy-900);font-weight:var(--ed-font-weight-bold);display:grid}.s05-stage-count small{color:var(--ed-color-text-secondary);font-weight:var(--ed-font-weight-medium)}.s05-progress-card ol{gap:var(--ed-space-1);margin:0;padding:0;list-style:none;display:grid}.s05-progress-card li{min-height:2.4rem;padding:var(--ed-space-2);border-radius:var(--ed-radius-sm);gap:var(--ed-space-2);color:var(--ed-color-text-secondary);grid-template-columns:auto minmax(0,1fr) auto;align-items:center;display:grid}.s05-progress-card li>span{aspect-ratio:1;border:1px solid var(--ed-color-border-strong);width:1.65rem;font-size:var(--ed-font-size-xs);border-radius:50%;place-items:center;display:grid}.s05-progress-card li strong{font-size:var(--ed-font-size-sm)}.s05-progress-card li small{font-size:var(--ed-font-size-xs)}.s05-progress-card li.is-complete{color:var(--ed-color-success)}.student-exercises-s06{max-width:112rem;margin-inline:auto}.s06-topline{margin-bottom:var(--ed-space-4);justify-content:space-between;align-items:center;gap:var(--ed-space-4);color:var(--ed-color-text-secondary);font-size:var(--ed-font-size-sm);display:flex}.s06-hero{margin-bottom:var(--ed-space-4);padding:var(--ed-space-5) var(--ed-space-6);border:1px solid var(--ed-color-border);border-radius:var(--ed-radius-xl);gap:var(--ed-space-6);background:linear-gradient(125deg, #fff 28%, var(--ed-color-info-soft));box-shadow:var(--ed-shadow-sm);grid-template-columns:minmax(0,1fr) minmax(17rem,.48fr);align-items:center;display:grid}.s06-heading-meta{align-items:center;gap:var(--ed-space-3);color:var(--ed-color-text-secondary);display:flex}.s06-hero h1{margin:var(--ed-space-2) 0 0;color:var(--ed-color-navy-900);font-family:var(--ed-font-display);font-size:clamp(2.35rem,4vw,3.6rem);line-height:1}.s06-hero p{margin:var(--ed-space-2) 0 0;color:var(--ed-color-navy-700);font-size:var(--ed-font-size-lg)}.s06-hero blockquote{padding:var(--ed-space-4);border-radius:var(--ed-radius-lg);gap:var(--ed-space-3);color:var(--ed-color-navy-700);font-family:var(--ed-font-display);font-size:var(--ed-font-size-lg);background:#ffffffb3;align-items:center;margin:0;font-style:italic;display:flex}.s06-hero blockquote span{color:var(--ed-color-burgundy-700);font-size:2rem;font-style:normal}.s06-layout{gap:var(--ed-space-5);grid-template-columns:minmax(0,1fr) minmax(17rem,21rem);align-items:start;display:grid}.s06-main-column,.s06-side-column{gap:var(--ed-space-4);min-width:0;display:grid}.s06-exercise-grid{gap:var(--ed-space-4);grid-template-columns:repeat(2,minmax(0,1fr));align-items:start;display:grid}.s06-exercise-card{border-top:3px solid var(--ed-color-burgundy-700);min-width:0;transition:border-color var(--ed-transition-fast), box-shadow var(--ed-transition-fast)}.s06-exercise-card.is-complete{border-top-color:var(--ed-color-success)}.s06-match-card,.s06-reply-card{grid-column:1/-1}.s06-card-heading{margin-bottom:var(--ed-space-4);gap:var(--ed-space-3);grid-template-columns:2.15rem minmax(0,1fr) 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strong{color:var(--ed-color-navy-900);font-family:var(--ed-font-display);font-size:clamp(1.55rem,2.3vw,2rem)}.s06-question span{color:var(--ed-color-burgundy-700)}.s06-question small{color:var(--ed-color-text-secondary)}.s06-options{margin-bottom:var(--ed-space-4);gap:var(--ed-space-2);grid-template-columns:repeat(3,1fr);display:grid}.s06-options button,.s06-reply-options button{min-width:0;padding:var(--ed-space-3);border:1px solid var(--ed-color-border);border-radius:var(--ed-radius-md);color:var(--ed-color-navy-900);cursor:pointer;background:#fff;display:grid}.s06-options button.is-selected,.s06-reply-options button.is-selected{border-color:var(--ed-color-burgundy-700);box-shadow:0 0 0 2px var(--ed-color-burgundy-100);background:var(--ed-color-burgundy-100)}.s06-exercise-card.is-complete .s06-options button.is-selected,.s06-exercise-card.is-complete .s06-reply-options button.is-selected{border-color:var(--ed-color-success);box-shadow:0 0 0 2px var(--ed-color-success-soft);color:var(--ed-color-success);background:var(--ed-color-success-soft)}.s06-exercise-card.is-complete .s06-options button.is-selected span,.s06-exercise-card.is-complete .s06-reply-options button.is-selected span{color:var(--ed-color-success)}.s06-options strong,.s06-reply-options strong{font-family:var(--ed-font-display);font-size:var(--ed-font-size-lg)}.s06-options span,.s06-reply-options span{color:var(--ed-color-burgundy-700);font-size:var(--ed-font-size-sm)}.s06-options small,.s06-reply-options small{color:var(--ed-color-text-secondary)}.s06-sentence-answer{min-height:4.5rem;margin-bottom:var(--ed-space-3);padding:var(--ed-space-3);border:1px dashed var(--ed-color-border-strong);border-radius:var(--ed-radius-md);align-items:center;gap:var(--ed-space-2);background:var(--ed-color-surface-muted);flex-wrap:wrap;display:flex}.s06-sentence-answer span,.s06-token-bank button,.s06-word-bank button{padding:var(--ed-space-2) var(--ed-space-3);border:1px solid 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button:disabled{opacity:.4;cursor:default}.s06-card-actions{gap:var(--ed-space-2);flex-wrap:wrap;display:flex}.s06-feedback{margin-top:var(--ed-space-3);padding:var(--ed-space-3);border-radius:var(--ed-radius-md);gap:var(--ed-space-3);align-items:center;display:flex}.s06-feedback>span{aspect-ratio:1;color:#fff;width:1.8rem;height:1.8rem;font-weight:var(--ed-font-weight-bold);border-radius:50%;flex:0 0 1.8rem;place-items:center;display:grid}.s06-feedback p{font-size:var(--ed-font-size-sm);margin:0;display:grid}.s06-feedback.is-correct{color:var(--ed-color-success);background:var(--ed-color-success-soft)}.s06-feedback.is-correct>span{background:var(--ed-color-success)}.s06-feedback.is-incorrect{color:var(--ed-color-danger);background:var(--ed-color-danger-soft)}.s06-feedback.is-incorrect>span{background:var(--ed-color-danger)}.s06-match-area{margin-bottom:var(--ed-space-4);gap:var(--ed-space-5);grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.s06-match-area>div{gap:var(--ed-space-2);display:grid}.s06-match-area button{min-height:3.8rem;padding:var(--ed-space-2) var(--ed-space-3);border:1px solid var(--ed-color-border);border-radius:var(--ed-radius-md);color:var(--ed-color-navy-900);cursor:pointer;background:#fff;align-content:center;display:grid}.s06-match-area button.is-selected{border-color:var(--ed-color-burgundy-700);box-shadow:0 0 0 2px var(--ed-color-burgundy-100)}.s06-match-area button.is-paired{background:var(--ed-color-info-soft)}.s06-exercise-card.is-complete .s06-match-area button.is-paired{border-color:var(--ed-color-success);color:var(--ed-color-success);background:var(--ed-color-success-soft)}.s06-exercise-card.is-complete .s06-match-area button.is-paired span,.s06-exercise-card.is-complete .s06-match-area button.is-paired small{color:var(--ed-color-success)}.s06-match-area strong{font-family:var(--ed-font-display);font-size:var(--ed-font-size-lg)}.s06-match-area span,.s06-match-area small{color:var(--ed-color-text-secondary)}.s06-blank-lines{margin-bottom:var(--ed-space-4);gap:var(--ed-space-2);display:grid}.s06-blank-lines p{padding:var(--ed-space-3);border-radius:var(--ed-radius-md);align-items:center;gap:var(--ed-space-2);background:var(--ed-color-surface-muted);grid-template-columns:max-content minmax(4rem,max-content) max-content;margin:0;display:grid}.s06-blank-lines strong{color:var(--ed-color-navy-900);font-family:var(--ed-font-display);font-size:var(--ed-font-size-lg)}.s06-blank-lines button{border:1px dashed var(--ed-color-burgundy-700);border-radius:var(--ed-radius-sm);min-width:4rem;color:var(--ed-color-burgundy-800);font-family:var(--ed-font-display);font-size:var(--ed-font-size-lg);cursor:pointer;background:#fff;padding:.25rem .5rem}.s06-blank-lines button.is-active{box-shadow:0 0 0 2px var(--ed-color-burgundy-100);background:var(--ed-color-burgundy-100)}.s06-exercise-card.is-complete .s06-blank-lines button{border-color:var(--ed-color-success);color:var(--ed-color-success);background:var(--ed-color-success-soft);box-shadow:none}.s06-blank-lines span,.s06-blank-lines small{color:var(--ed-color-text-secondary);grid-column:1/-1}.s06-blank-lines span{color:var(--ed-color-burgundy-700);font-size:var(--ed-font-size-sm)}.s06-reply-options{margin-bottom:var(--ed-space-4);gap:var(--ed-space-3);grid-template-columns:repeat(3,minmax(0,1fr));display:grid}.s06-bottom-navigation{gap:var(--ed-space-5);grid-template-columns:auto minmax(12rem,1fr) auto;align-items:center;display:grid}.s06-bottom-navigation>div{gap:var(--ed-space-2);color:var(--ed-color-text-secondary);text-align:center;font-size:var(--ed-font-size-sm);display:grid}.s06-bottom-navigation i{border-radius:var(--ed-radius-pill);background:var(--ed-color-cream-200);height:.4rem;overflow:hidden}.s06-bottom-navigation i b{border-radius:inherit;background:var(--ed-color-burgundy-700);width:66.666%;height:100%;display:block}.s06-next-disabled{border-color:var(--ed-color-border);color:var(--ed-color-text-secondary);background:var(--ed-color-surface-muted);box-shadow:none}.s06-progress-card,.s06-stage-card{border-top:3px solid var(--ed-color-navy-700)}.s06-progress-count,.s06-stage-count{margin:var(--ed-space-3) 0;align-items:center;gap:var(--ed-space-3);display:flex}.s06-progress-count>strong,.s06-stage-count>strong{color:var(--ed-color-burgundy-700);font-family:var(--ed-font-display);font-size:3.2rem;line-height:1}.s06-progress-count>span,.s06-stage-count>span{color:var(--ed-color-navy-900);font-weight:var(--ed-font-weight-bold);display:grid}.s06-progress-count small,.s06-stage-count small{color:var(--ed-color-text-secondary);font-weight:var(--ed-font-weight-medium)}.s06-progress-track{height:.5rem;margin-bottom:var(--ed-space-3);border-radius:var(--ed-radius-pill);background:var(--ed-color-cream-200);overflow:hidden}.s06-progress-track i{border-radius:inherit;background:var(--ed-color-success);height:100%;transition:width var(--ed-transition);display:block}.s06-progress-card ol,.s06-stage-card ol{gap:var(--ed-space-1);margin:0;padding:0;list-style:none;display:grid}.s06-progress-card li,.s06-stage-card li{min-height:2.4rem;padding:var(--ed-space-2);border-radius:var(--ed-radius-sm);gap:var(--ed-space-2);color:var(--ed-color-text-secondary);grid-template-columns:auto minmax(0,1fr) auto;align-items:center;display:grid}.s06-progress-card li>span,.s06-stage-card li>span{aspect-ratio:1;border:1px solid var(--ed-color-border-strong);width:1.65rem;min-width:1.65rem;height:1.65rem;font-size:var(--ed-font-size-xs);border-radius:50%;place-items:center;display:grid}.s06-progress-card li strong,.s06-stage-card li strong{font-size:var(--ed-font-size-sm)}.s06-progress-card li.is-complete,.s06-stage-card li.is-complete{color:var(--ed-color-success)}.s06-progress-card li.is-retry{color:var(--ed-color-danger);background:var(--ed-color-danger-soft)}.s06-stage-card li.is-current{color:var(--ed-color-burgundy-800);background:var(--ed-color-burgundy-100)}.s06-stage-card li small{font-size:var(--ed-font-size-xs)}.s06-all-complete{margin-top:var(--ed-space-3);padding:var(--ed-space-3);border-radius:var(--ed-radius-md);color:var(--ed-color-success);background:var(--ed-color-success-soft);font-weight:var(--ed-font-weight-bold)}.s06-tip-card{gap:var(--ed-space-3);grid-template-columns:auto 1fr;align-items:center;display:grid}.s06-tip-card>span{color:var(--ed-color-gold-500);font-family:var(--ed-font-display);font-size:2.4rem}.s06-tip-card p{color:var(--ed-color-text-secondary);margin:0;display:grid}.s06-tip-card strong{color:var(--ed-color-navy-900)}@media (max-width:1120px){.s06-layout{grid-template-columns:1fr}.s06-side-column{grid-template-columns:repeat(2,minmax(0,1fr))}.s06-tip-card{grid-column:1/-1}}@media (max-width:780px){.s06-hero,.s06-exercise-grid{grid-template-columns:1fr}.s06-match-card,.s06-reply-card{grid-column:auto}.s06-side-column{grid-template-columns:1fr}.s06-tip-card{grid-column:auto}.s06-options,.s06-reply-options{grid-template-columns:1fr}}@media (max-width:560px){.s06-hero{padding:var(--ed-space-4)}.s06-match-area{gap:var(--ed-space-3);grid-template-columns:1fr}.s06-bottom-navigation{gap:var(--ed-space-3);grid-template-columns:1fr 1fr}.s06-bottom-navigation>div{grid-area:1/1/auto/-1}.s06-blank-lines p{grid-template-columns:minmax(0,max-content) minmax(3.5rem,max-content) minmax(0,max-content)}}.s05-progress-card li.is-complete>span{color:#fff;border-color:var(--ed-color-success);background:var(--ed-color-success)}.s05-progress-card li.is-current{color:var(--ed-color-burgundy-800);background:var(--ed-color-burgundy-100)}.s05-progress-card li.is-current>span{color:#fff;border-color:var(--ed-color-burgundy-700);background:var(--ed-color-burgundy-700)}.s05-tip-card{gap:var(--ed-space-3);grid-template-columns:auto minmax(0,1fr);align-items:center;display:grid}.s05-tip-card>span{color:var(--ed-color-gold-500);font-family:var(--ed-font-display);font-size:2.5rem}.s05-tip-card p{color:var(--ed-color-text-secondary);margin:0}.s05-tip-card strong{color:var(--ed-color-navy-900);display:block}@media (max-width:1050px){.lesson-seal{right:2rem}.student-summary-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.summary-card,.summary-card.compact{grid-column:auto}.summary-card.compact{grid-column:1/-1}.lesson-layout{grid-template-columns:1fr}.lesson-side-column{grid-template-columns:repeat(2,minmax(0,1fr))}.s01-dashboard-grid{grid-template-columns:1fr}.s01-side-column{grid-template-columns:repeat(2,minmax(0,1fr))}.s01-progress-card{grid-row:span 2}.s02-content-grid{grid-template-columns:1fr}.s02-side-column{grid-template-columns:repeat(2,minmax(0,1fr))}.s02-progress-card{grid-row:span 2}.s03-layout{grid-template-columns:1fr}.student-words-s03{width:100%;margin-inline:auto}.s03-side-column{grid-template-columns:repeat(2,minmax(0,1fr))}.student-grammar-s04{width:100%;margin-inline:auto}.s04-layout{grid-template-columns:1fr}.s04-side-column{grid-template-columns:repeat(2,minmax(0,1fr));position:static}.s04-progress-card{grid-row:span 2}.student-dialogue-s05{width:100%;margin-inline:auto}.s05-layout{grid-template-columns:1fr}.s05-side-column{grid-template-columns:repeat(2,minmax(0,1fr));position:static}.s05-expressions-card{grid-row:span 2}}@media (max-width:700px){.shell-student .main{padding:1.75rem 1rem 3rem}.shell-student .nav{grid-template-columns:repeat(2,minmax(0,1fr));display:grid;overflow:visible}.shell-student .nav a{white-space:normal;min-width:0}.student-heading{margin-bottom:1.4rem}.student-heading h1{font-size:clamp(2.2rem,11vw,3.1rem)}.student-heading .lead{font-size:1rem}.learning-now{padding:1.35rem}.lesson-copy{max-width:100%}.lesson-seal{display:none}.student-summary-grid{grid-template-columns:1fr}.summary-card,.summary-card.compact{grid-column:auto}.lesson-heading{margin-bottom:1.5rem}.lesson-word-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.lesson-side-column{grid-template-columns:1fr}.audio-card{grid-template-columns:auto minmax(0,1fr)}.audio-card .button{grid-column:1/-1;width:100%}.words-heading h1{font-size:2.35rem}.word-study-card{padding:1.25rem}.audio-actions,.study-actions{grid-template-columns:1fr}.choice-button{min-height:3.5rem}.summary-actions{flex-direction:column}.summary-actions .button{width:100%}.review-grid{grid-template-columns:1fr}.s01-welcome{margin-bottom:var(--ed-space-6)}.s01-lesson-hero{padding:var(--ed-space-6);grid-template-columns:1fr}.s01-lesson-art{min-height:11rem;padding:var(--ed-space-5)}.s01-lesson-art i{margin-top:var(--ed-space-4)}.s01-action-grid,.s01-side-column{grid-template-columns:1fr}.s01-progress-card{grid-row:auto}.s01-route-steps{grid-template-columns:repeat(2,minmax(0,1fr))}.s02-hero{padding:var(--ed-space-6);grid-template-columns:1fr}.s02-hero-art{min-height:11rem}.s02-stage-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.s02-next-card{grid-template-columns:auto minmax(0,1fr)}.s02-next-card .ui-button{grid-column:1/-1}.s02-phrase-grid,.s02-side-column{grid-template-columns:1fr}.s02-progress-card{grid-row:auto}.s03-example{grid-template-columns:1fr}.s03-example button{width:100%}.s03-side-column{grid-template-columns:1fr}.s04-hero{padding:var(--ed-space-6);grid-template-columns:1fr}.s04-hero-note{display:none}.s04-model-body,.s04-side-column{grid-template-columns:1fr}.s04-progress-card{grid-row:auto}.s04-bottom-navigation{grid-template-columns:1fr 1fr}.s04-bottom-navigation>div{grid-area:1/1/auto/-1}.s05-hero{padding:var(--ed-space-6);grid-template-columns:1fr}.s05-hero blockquote{display:none}.s05-controls{flex-direction:column;align-items:stretch}.s05-mode-tabs{grid-template-columns:repeat(3,minmax(0,1fr));display:grid}.s05-mode-tabs button{justify-content:center}.s05-display-controls{flex-wrap:wrap}.s05-audio-status{width:100%}.s05-side-column{grid-template-columns:1fr}.s05-expressions-card{grid-row:auto}.s05-role-turns article{grid-template-columns:auto minmax(0,1fr)}.s05-own-line{grid-column:2}.s05-bottom-navigation{grid-template-columns:1fr 1fr}.s05-bottom-navigation>div{grid-area:1/1/auto/-1}}@media (max-width:420px){.shell-student .sidebar{padding:.9rem}.shell-student .nav a{min-height:2.9rem;padding-inline:.75rem}.student-heading .avatar{min-width:2.5rem;height:2.5rem}.lesson-hanzi{font-size:3.1rem}.lesson-title-hanzi{font-size:3.2rem}.student-card{padding:1.15rem}.lesson-word{padding:.75rem}.words-topline{align-items:flex-start}.s01-welcome .lead{font-size:var(--ed-font-size-md)}.s01-profile-mark{width:2.65rem;height:2.65rem;box-shadow:0 0 0 .3rem var(--ed-color-burgundy-100)}.s01-section-heading{flex-direction:column;align-items:flex-start}.s01-action-card,.s01-route-steps{grid-template-columns:1fr}.s02-hanzi{font-size:3.4rem}.s02-stage-grid,.s02-next-card,.s03-study-actions,.s03-result-grid{grid-template-columns:1fr}.s03-word-navigation,.s03-summary-actions{flex-direction:column}.s03-word-navigation .ui-button,.s03-summary-actions .ui-button{width:100%}.s04-model-heading{grid-template-columns:auto minmax(0,1fr)}.s04-model-glyph{display:none}.s04-practice-area{flex-direction:column}.s04-bottom-navigation{grid-template-columns:1fr}.s04-bottom-navigation>div{grid-column:auto}.s04-bottom-navigation .ui-button{width:100%}.s05-mode-tabs,.s05-line-grid{grid-template-columns:1fr}.s05-dialogue-heading,.s05-role-heading{flex-direction:column;align-items:stretch}.s05-dialogue-turn{grid-template-columns:auto minmax(0,1fr) auto}.s05-speaker-name{grid-column:2}.s05-dialogue-turn>button{grid-area:1/3}.s05-turn-text{padding-left:calc(2.6rem + var(--ed-space-3));grid-column:1/-1}.s05-role-switch{grid-template-columns:1fr 1fr;display:grid}.s05-role-turns article{grid-template-columns:1fr}.s05-practice-number{margin-bottom:calc(var(--ed-space-2) * -1)}.s05-own-line{grid-column:auto}.s05-bottom-navigation{grid-template-columns:1fr}.s05-bottom-navigation>div{grid-column:auto}.s05-bottom-navigation .ui-button{width:100%}}.ui-button{min-height:var(--ed-control-height-md);padding:var(--ed-space-2) var(--ed-space-4);border-radius:var(--ed-radius-md);justify-content:center;align-items:center;gap:var(--ed-space-2);font-weight:var(--ed-font-weight-bold);cursor:pointer;transition:background var(--ed-transition), border-color var(--ed-transition), color var(--ed-transition), transform var(--ed-transition);border:1px solid #0000;display:inline-flex}.ui-button:hover:not(:disabled){transform:translateY(-1px)}.ui-button:focus-visible,.navigation-item:focus-visible,.ui-input:focus-visible{outline:3px solid color-mix(in srgb, var(--ed-color-info) 35%, transparent);outline-offset:2px}.ui-button:disabled{opacity:.55;cursor:not-allowed}.ui-button-primary{color:var(--ed-color-text-inverse);background:var(--ed-color-burgundy-700)}.ui-button-primary:hover:not(:disabled){background:var(--ed-color-burgundy-900)}.ui-button-secondary{color:var(--ed-color-text);background:var(--ed-color-surface);border-color:var(--ed-color-border-strong)}.ui-button-secondary:hover:not(:disabled){background:var(--ed-color-surface-muted)}.ui-button-ghost{color:var(--ed-color-burgundy-800);background:0 0}.ui-button-ghost:hover:not(:disabled){background:var(--ed-color-burgundy-100)}.ui-button-danger{color:var(--ed-color-text-inverse);background:var(--ed-color-danger)}.ui-button-sm{min-height:var(--ed-control-height-sm);padding-inline:var(--ed-space-3);font-size:var(--ed-font-size-sm)}.ui-button-lg{min-height:var(--ed-control-height-lg);padding-inline:var(--ed-space-6)}.ui-button-full{width:100%}.ui-card{border:1px solid var(--ed-color-border);border-radius:var(--ed-radius-lg);background:var(--ed-color-surface);min-width:0}.ui-card-elevated{box-shadow:var(--ed-shadow-sm)}.ui-card-muted{background:var(--ed-color-surface-muted)}.ui-card-accent{border-color:color-mix(in srgb, var(--ed-color-burgundy-700) 22%, var(--ed-color-border));background:linear-gradient(135deg, #fff, var(--ed-color-burgundy-100))}.ui-card-padding-sm{padding:var(--ed-space-4)}.ui-card-padding-md{padding:var(--ed-space-6)}.ui-card-padding-lg{padding:var(--ed-space-8)}.ui-badge{width:max-content;max-width:100%;padding:var(--ed-space-1) var(--ed-space-3);border-radius:var(--ed-radius-pill);align-items:center;gap:var(--ed-space-2);font-size:var(--ed-font-size-xs);font-weight:var(--ed-font-weight-bold);display:inline-flex}.ui-badge i{background:currentColor;border-radius:50%;width:.45rem;height:.45rem}.ui-badge-neutral{color:var(--ed-color-text-secondary);background:var(--ed-color-surface-muted)}.ui-badge-success{color:var(--ed-color-success);background:var(--ed-color-success-soft)}.ui-badge-warning{color:var(--ed-color-warning);background:var(--ed-color-warning-soft)}.ui-badge-danger{color:var(--ed-color-danger);background:var(--ed-color-danger-soft)}.ui-badge-info{color:var(--ed-color-info);background:var(--ed-color-info-soft)}.ui-field{gap:var(--ed-space-2);color:var(--ed-color-text);display:grid}.ui-field-label{font-size:var(--ed-font-size-sm);font-weight:var(--ed-font-weight-semibold)}.ui-input-wrap{align-items:center;display:flex;position:relative}.ui-input{width:100%;min-height:var(--ed-control-height-md);padding:var(--ed-space-2) var(--ed-space-3);border:1px solid var(--ed-color-border-strong);border-radius:var(--ed-radius-md);color:var(--ed-color-text);background:var(--ed-color-surface);transition:border-color var(--ed-transition), box-shadow var(--ed-transition)}.ui-input-leading{left:var(--ed-space-3);z-index:1;color:var(--ed-color-text-secondary);position:absolute}.ui-input-leading+.ui-input{padding-left:var(--ed-space-10)}.ui-input:focus{border-color:var(--ed-color-info);box-shadow:0 0 0 3px var(--ed-color-info-soft)}.ui-field-description{color:var(--ed-color-text-secondary)}.ui-field-error .ui-input{border-color:var(--ed-color-danger)}.ui-field-error .ui-field-description{color:var(--ed-color-danger)}.learning-block{min-width:0;padding:var(--ed-space-6);border:1px solid var(--ed-color-border);border-radius:var(--ed-radius-lg);background:var(--ed-color-surface);box-shadow:var(--ed-shadow-sm)}.learning-block-header{align-items:flex-start;gap:var(--ed-space-3);margin-bottom:var(--ed-space-4);display:flex}.learning-block-icon{border-radius:var(--ed-radius-md);width:2.75rem;height:2.75rem;color:var(--ed-color-burgundy-700);background:var(--ed-color-burgundy-100);flex:none;place-items:center;display:grid}.learning-block-heading{flex:1;min-width:0}.learning-block-heading p{margin-bottom:var(--ed-space-1);color:var(--ed-color-burgundy-700);font-size:var(--ed-font-size-xs);font-weight:var(--ed-font-weight-bold);letter-spacing:.08em;text-transform:uppercase}.learning-block-heading h2{margin-bottom:0}.learning-block-action{margin-left:auto}.learning-block-lesson{border-top:3px solid var(--ed-color-burgundy-700)}.learning-block-practice{border-top:3px solid var(--ed-color-info)}.learning-block-feedback{border-top:3px solid var(--ed-color-success)}.app-shell{min-height:100vh;display:grid;overflow-x:clip}.shell-brand{align-items:center;gap:var(--ed-space-3);min-width:0;display:flex}.shell-brand-mark{border-radius:var(--ed-radius-md);color:#fff;background:var(--ed-color-burgundy-700);width:2.75rem;height:2.75rem;font-family:var(--ed-font-display);font-size:var(--ed-font-size-xl);flex:none;place-items:center;display:grid}.shell-brand-copy{min-width:0;display:grid}.shell-brand-copy strong{font-family:var(--ed-font-display);font-size:var(--ed-font-size-lg);line-height:var(--ed-line-height-tight)}.shell-brand-copy small{margin-top:var(--ed-space-1);color:inherit;opacity:.68;font-size:var(--ed-font-size-xs)}.shell-brand.is-compact .shell-brand-mark{background:#ffffff21}.shell-brand.is-compact .shell-brand-copy strong{font-size:var(--ed-font-size-md);text-transform:uppercase;letter-spacing:.04em}.shell-navigation{gap:var(--ed-space-1);display:grid}.shell-navigation-label{margin:0 0 var(--ed-space-2) var(--ed-space-3);color:var(--ed-color-text-secondary);font-size:var(--ed-font-size-xs);font-weight:var(--ed-font-weight-bold);letter-spacing:.1em;text-transform:uppercase}.navigation-item{min-width:0;min-height:var(--ed-control-height-md);padding:var(--ed-space-2) var(--ed-space-3);border-radius:var(--ed-radius-md);align-items:center;gap:var(--ed-space-3);color:var(--ed-color-text-secondary);font-weight:var(--ed-font-weight-semibold);transition:color var(--ed-transition), background var(--ed-transition);display:flex}.navigation-item:hover,.navigation-item.is-active{color:var(--ed-color-burgundy-800);background:var(--ed-color-burgundy-100)}.navigation-item-icon{text-align:center;width:1.5rem;font-family:var(--ed-font-display);font-size:var(--ed-font-size-lg);flex:none}.navigation-item-label{flex:1;min-width:0}.navigation-item-badge{margin-left:auto}.navigation-item.is-compact{min-height:2.45rem;font-size:var(--ed-font-size-sm)}.shell-role-switch{padding:var(--ed-space-4);border:1px solid var(--ed-color-border);border-radius:var(--ed-radius-lg);gap:var(--ed-space-2);margin-top:auto;display:grid}.shell-role-switch small{color:inherit;opacity:.64}.shell-role-switch a{justify-content:space-between;gap:var(--ed-space-3);font-weight:var(--ed-font-weight-semibold);display:flex}.shell-main{width:100%;min-width:0;max-width:var(--ed-content-width);padding:var(--ed-space-10) clamp(var(--ed-space-5), 4vw, var(--ed-space-16)) var(--ed-space-16);margin:0 auto}.student-shell{grid-template-columns:var(--ed-sidebar-student) minmax(0, 1fr);background:var(--ed-color-background)}.student-shell-sidebar{height:100vh;padding:var(--ed-space-8) var(--ed-space-5);border-right:1px solid var(--ed-color-border);gap:var(--ed-space-8);color:var(--ed-color-navy-900);background:linear-gradient(#fffffff5,#f8f4ecfa);flex-direction:column;display:flex;position:sticky;top:0}.student-shell-sidebar:after{content:"山 水";margin:auto auto var(--ed-space-4);color:color-mix(in srgb, var(--ed-color-navy-700) 22%, transparent);font-family:var(--ed-font-display);font-size:var(--ed-font-size-2xl);letter-spacing:.25em}.student-shell-sidebar .shell-role-switch{color:var(--ed-color-navy-900);background:#ffffffb8;margin-top:0}.student-shell-workspace{min-width:0}.student-shell-toolbar{min-height:3.5rem;padding:0 clamp(var(--ed-space-5), 4vw, var(--ed-space-16));border-bottom:1px solid var(--ed-color-border);justify-content:space-between;align-items:center;gap:var(--ed-space-4);color:var(--ed-color-text-secondary);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#ffffffb8;display:flex}.student-shell-toolbar>span:first-child{color:var(--ed-color-burgundy-800);font-family:var(--ed-font-display);font-weight:var(--ed-font-weight-bold)}.shell-mode-label{font-size:var(--ed-font-size-sm)}.student-shell-main{padding-top:clamp(var(--ed-space-8), 5vw, var(--ed-space-16))}.teacher-shell{grid-template-columns:var(--ed-sidebar-teacher) minmax(0, 1fr);background:#f6f4f0}.teacher-shell-sidebar{height:100vh;padding:var(--ed-space-6) var(--ed-space-4);gap:var(--ed-space-6);color:var(--ed-color-text-inverse);background:linear-gradient(180deg, var(--ed-color-burgundy-900), #7a292c 68%, #5d1b21);flex-direction:column;display:flex;position:sticky;top:0}.teacher-shell-sidebar .shell-navigation-label{color:#ffffff8c}.teacher-shell-sidebar .navigation-item{color:#ffffffc2}.teacher-shell-sidebar .navigation-item:hover,.teacher-shell-sidebar .navigation-item.is-active{color:#fff;background:#ffffff21}.teacher-shell-sidebar .shell-role-switch{background:#36090e2e;border-color:#ffffff2e}.teacher-shell-workspace{min-width:0}.teacher-shell-toolbar{min-height:4.25rem;padding:var(--ed-space-2) clamp(var(--ed-space-5), 3vw, var(--ed-space-10));border-bottom:1px solid var(--ed-color-border);justify-content:space-between;align-items:center;gap:var(--ed-space-4);background:#ffffffeb;display:flex}.teacher-shell-toolbar>div:first-child{display:grid}.teacher-shell-toolbar small{color:var(--ed-color-text-secondary)}.teacher-toolbar-user{align-items:center;gap:var(--ed-space-2);display:flex}.teacher-toolbar-user>span{color:#fff;background:var(--ed-color-navy-900);width:2rem;height:2rem;font-size:var(--ed-font-size-sm);font-weight:var(--ed-font-weight-bold);border-radius:50%;place-items:center;display:grid}.teacher-shell-main{max-width:none;padding-top:var(--ed-space-8)}.page-header-actions{align-items:center;gap:var(--ed-space-3);display:flex}@media (max-width:900px){.student-shell,.teacher-shell{grid-template-columns:1fr}.student-shell-sidebar,.teacher-shell-sidebar{width:100%;height:auto;padding:var(--ed-space-4);gap:var(--ed-space-4);position:static}.student-shell-sidebar:after{display:none}.shell-navigation{padding-bottom:var(--ed-space-1);display:flex;overflow-x:auto}.shell-navigation-label{display:none}.navigation-item{white-space:nowrap;flex:none}.shell-role-switch{padding:var(--ed-space-3);margin:0}.shell-role-switch small{display:none}.student-shell-toolbar,.teacher-shell-toolbar{min-height:3.5rem}}@media (max-width:600px){.shell-brand-copy small,.shell-mode-label,.teacher-shell-toolbar>div:first-child small{display:none}.shell-main{padding:var(--ed-space-6) var(--ed-space-4) var(--ed-space-10)}.student-shell-sidebar,.teacher-shell-sidebar{padding:var(--ed-space-3)}.shell-navigation{grid-template-columns:repeat(2,minmax(0,1fr));display:grid;overflow:visible}.navigation-item{white-space:normal;min-width:0}.navigation-item-label{overflow-wrap:anywhere}.shell-role-switch a{font-size:var(--ed-font-size-sm)}.learning-block-header{flex-wrap:wrap}.learning-block-action{width:100%;margin-left:0}}.student-progress-mvp{gap:var(--ed-space-7);max-width:78rem;display:grid}.progress-hero{padding:clamp(var(--ed-space-5), 4vw, var(--ed-space-8));border:1px solid var(--ed-color-border);border-radius:var(--ed-radius-xl);justify-content:space-between;align-items:center;gap:var(--ed-space-5);background:linear-gradient(120deg, #fff 35%, var(--ed-color-burgundy-100));box-shadow:var(--ed-shadow-sm);display:flex}.progress-hero h1{margin:var(--ed-space-2) 0;font-family:var(--ed-font-display);font-size:clamp(2.5rem,5vw,4rem)}.progress-hero .lead{color:var(--ed-color-navy-700);margin:0}.progress-hero-mark{min-width:8rem;color:var(--ed-color-burgundy-700);justify-items:center;display:grid}.progress-hero-mark strong{font-family:var(--ed-font-display);font-size:3rem;font-weight:400;line-height:1.2}.progress-hero-mark span,.progress-hero-mark small{color:var(--ed-color-text-secondary)}.progress-section{gap:var(--ed-space-4);display:grid}.progress-section-heading h2{margin:var(--ed-space-1) 0 0;font-family:var(--ed-font-display);font-size:clamp(1.6rem,3vw,2rem)}.progress-lesson-heading{justify-content:space-between;align-items:center;gap:var(--ed-space-4);display:flex}.progress-current-card,.progress-lesson-card{border-top:3px solid var(--ed-color-burgundy-700)}.progress-hanzi{margin:var(--ed-space-3) 0 0;color:var(--ed-color-navy-900);font-family:var(--ed-font-display);font-size:clamp(2rem,4vw,3rem);line-height:1.2}.progress-pinyin{margin:var(--ed-space-1) 0 0;color:var(--ed-color-burgundy-700)}.progress-translation{margin:var(--ed-space-1) 0 0;color:var(--ed-color-text-secondary)}.progress-facts{margin:var(--ed-space-5) 0 0;gap:var(--ed-space-3);grid-template-columns:repeat(3,minmax(0,1fr));display:grid}.progress-facts>div{padding:var(--ed-space-4);border-radius:var(--ed-radius-md);gap:var(--ed-space-1);background:var(--ed-color-surface-muted);display:grid}.progress-facts dt,.progress-lesson-details dt{color:var(--ed-color-text-secondary);font-size:var(--ed-font-size-sm)}.progress-facts dd{color:var(--ed-color-burgundy-700);font-family:var(--ed-font-display);margin:0;font-size:2.3rem;line-height:1}.progress-facts small{color:var(--ed-color-text-secondary)}.progress-lesson-details{margin:var(--ed-space-5) 0;border-top:1px solid var(--ed-color-border)}.progress-lesson-details>div{padding:var(--ed-space-3) 0;border-bottom:1px solid var(--ed-color-border);justify-content:space-between;gap:var(--ed-space-3);display:flex}.progress-lesson-details dd{color:var(--ed-color-navy-900);text-align:right;font-weight:var(--ed-font-weight-bold);margin:0}.progress-actions{gap:var(--ed-space-3);flex-wrap:wrap;display:flex}.progress-attention-card{border-top:3px solid var(--ed-color-burgundy-700)}.progress-attention-list{margin:0;padding:0;list-style:none;display:grid}.progress-word-row{min-width:0;padding:var(--ed-space-3) 0;justify-content:space-between;align-items:center;gap:var(--ed-space-3);flex-wrap:wrap;display:flex}.progress-word-row+.progress-word-row{border-top:1px solid var(--ed-color-border)}.progress-word-copy{align-items:baseline;gap:var(--ed-space-2) var(--ed-space-3);flex-wrap:wrap;min-width:0;display:flex}.progress-word-copy strong{color:var(--ed-color-navy-900);font-family:var(--ed-font-display);font-size:2.2rem;line-height:1.2}.progress-word-copy span{color:var(--ed-color-burgundy-700)}.progress-word-copy small,.progress-empty p,.progress-loading{color:var(--ed-color-text-secondary)}.progress-attention-action{padding-top:var(--ed-space-4);border-top:1px solid var(--ed-color-border)}.progress-attention-action .ui-button{white-space:normal;text-align:center;max-width:100%}.progress-empty{align-items:center;gap:var(--ed-space-4);display:flex}.progress-empty>span{width:3rem;height:3rem;color:var(--ed-color-burgundy-700);background:var(--ed-color-burgundy-100);border-radius:50%;place-items:center;display:grid}.progress-empty h3{margin:0 0 var(--ed-space-1);color:var(--ed-color-navy-900)}.progress-empty p{margin:0}@media (max-width:700px){.progress-hero-mark{display:none}.progress-lesson-heading,.progress-lesson-details>div{flex-direction:column;align-items:flex-start}.progress-lesson-details dd{text-align:left}.progress-facts{grid-template-columns:1fr}.progress-attention-action .ui-button{width:100%}}.student-homework-s07{max-width:112rem;margin-inline:auto}.s07-topline{margin-bottom:var(--ed-space-4);justify-content:space-between;align-items:center;gap:var(--ed-space-4);color:var(--ed-color-text-secondary);font-size:var(--ed-font-size-sm);display:flex}.s07-hero{margin-bottom:var(--ed-space-4);padding:var(--ed-space-5) var(--ed-space-6);border:1px solid var(--ed-color-border);border-radius:var(--ed-radius-xl);gap:var(--ed-space-6);background:linear-gradient(125deg, #fff 28%, var(--ed-color-info-soft));box-shadow:var(--ed-shadow-sm);grid-template-columns:minmax(0,1fr) minmax(17rem,.44fr);align-items:center;display:grid}.s07-heading-meta{align-items:center;gap:var(--ed-space-3);color:var(--ed-color-text-secondary);display:flex}.s07-hero h1{margin:var(--ed-space-2) 0 0;color:var(--ed-color-navy-900);font-family:var(--ed-font-display);font-size:clamp(2.3rem,4vw,3.5rem);line-height:1}.s07-hero h2{margin:var(--ed-space-2) 0 0;color:var(--ed-color-burgundy-700);font-size:var(--ed-font-size-xl)}.s07-hero p{max-width:52rem;margin:var(--ed-space-2) 0 0;color:var(--ed-color-navy-700)}.s07-hero blockquote{padding:var(--ed-space-4);border-radius:var(--ed-radius-lg);gap:var(--ed-space-3);color:var(--ed-color-navy-700);font-family:var(--ed-font-display);font-size:var(--ed-font-size-lg);background:#ffffffb8;align-items:center;margin:0;font-style:italic;display:flex}.s07-hero blockquote span{color:var(--ed-color-burgundy-700);font-size:2.2rem;font-style:normal}.s07-layout{gap:var(--ed-space-5);grid-template-columns:minmax(0,1fr) minmax(17rem,21rem);align-items:start;display:grid}.s07-main-column,.s07-side-column{gap:var(--ed-space-4);min-width:0;display:grid}.s07-speaking-card,.s07-check-card{border-top:3px solid var(--ed-color-burgundy-700)}.s07-section-heading,.s07-section-title{gap:var(--ed-space-3);grid-template-columns:2.15rem minmax(0,1fr);align-items:start;display:grid}.s07-section-heading>span,.s07-section-title>span{aspect-ratio:1;color:#fff;background:var(--ed-color-burgundy-700);width:2.15rem;min-width:2.15rem;max-width:2.15rem;height:2.15rem;min-height:2.15rem;max-height:2.15rem;font-weight:var(--ed-font-weight-bold);border-radius:50%;flex:0 0 2.15rem;place-self:start;place-items:center;line-height:1;display:grid}.s07-section-heading h2,.s07-section-title h2{color:var(--ed-color-navy-900);margin:0}.s07-section-heading p,.s07-section-title p{margin:var(--ed-space-1) 0 0;color:var(--ed-color-text-secondary)}.s07-builder-grid{margin-top:var(--ed-space-4);gap:var(--ed-space-3);grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.s07-builder{padding:var(--ed-space-4);border-radius:var(--ed-radius-lg);align-items:center;gap:var(--ed-space-2);background:var(--ed-color-surface-muted);flex-wrap:wrap;display:flex}.s07-builder strong{padding:var(--ed-space-2) var(--ed-space-3);border:1px solid var(--ed-color-border);border-radius:var(--ed-radius-sm);color:var(--ed-color-navy-900);font-family:var(--ed-font-display);font-size:var(--ed-font-size-lg);background:#fff}.s07-builder i{color:var(--ed-color-burgundy-700);font-style:normal}.s07-builder small{gap:var(--ed-space-2);width:100%;color:var(--ed-color-text-secondary);flex-wrap:wrap;display:flex}.s07-builder small span{padding-inline:var(--ed-space-2);border-left:2px solid var(--ed-color-border)}.s07-support-words{margin-top:var(--ed-space-3);gap:var(--ed-space-2);grid-template-columns:repeat(4,minmax(0,1fr));display:grid}.s07-support-words>div{padding:var(--ed-space-3);border:1px solid var(--ed-color-border);border-radius:var(--ed-radius-md);text-align:center;display:grid}.s07-support-words strong{color:var(--ed-color-navy-900);font-family:var(--ed-font-display);font-size:var(--ed-font-size-xl)}.s07-support-words span{color:var(--ed-color-burgundy-700);font-size:var(--ed-font-size-sm)}.s07-support-words small{color:var(--ed-color-text-secondary)}.s07-answer-section{gap:var(--ed-space-3);display:grid}.s07-text-answer{border-top:3px solid var(--ed-color-success)}.s07-method-heading{gap:var(--ed-space-3);grid-template-columns:auto minmax(0,1fr) auto;align-items:start;display:grid}.s07-method-heading>span:first-child{aspect-ratio:1;width:2.3rem;height:2.3rem;color:var(--ed-color-burgundy-700);background:var(--ed-color-burgundy-100);font-family:var(--ed-font-display);font-size:var(--ed-font-size-lg);border-radius:50%;place-items:center;display:grid}.s07-method-heading h3{color:var(--ed-color-navy-900);margin:0}.s07-method-heading p{margin:var(--ed-space-1) 0 0;color:var(--ed-color-text-secondary)}.s07-text-answer>label{margin:var(--ed-space-4) 0 var(--ed-space-2);color:var(--ed-color-navy-900);font-weight:var(--ed-font-weight-bold);display:block}.s07-text-answer textarea{resize:vertical;width:100%;min-height:13rem;padding:var(--ed-space-4);border:1px solid var(--ed-color-border-strong);border-radius:var(--ed-radius-lg);color:var(--ed-color-text);font:inherit;line-height:var(--ed-line-height-body);background:#fff}.s07-text-answer textarea:focus{border-color:var(--ed-color-burgundy-700);outline:3px solid var(--ed-color-burgundy-100)}.s07-future-methods{gap:var(--ed-space-3);grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.s07-disabled-method{opacity:.82}.s07-disabled-zone{margin-top:var(--ed-space-4);padding:var(--ed-space-4);border:1px dashed var(--ed-color-border-strong);border-radius:var(--ed-radius-lg);place-items:center;gap:var(--ed-space-2);text-align:center;display:grid}.s07-disabled-zone>span{color:var(--ed-color-text-secondary);font-size:2rem}.s07-disabled-zone button{color:var(--ed-color-text-secondary);background:var(--ed-color-surface-muted);cursor:not-allowed}.s07-disabled-zone small,.s07-disabled-audio small{color:var(--ed-color-text-secondary)}.s07-disabled-audio{margin-top:var(--ed-space-4);padding:var(--ed-space-4);border-radius:var(--ed-radius-lg);gap:var(--ed-space-3);background:var(--ed-color-surface-muted);grid-template-columns:auto 1fr;align-items:center;display:grid}.s07-disabled-audio>button{aspect-ratio:1;color:#fff;background:var(--ed-color-text-secondary);opacity:.55;cursor:not-allowed;border-radius:50%;place-items:center;width:3.2rem;min-width:3.2rem;height:3.2rem;padding:0;display:grid}.s07-disabled-audio>div{align-items:center;gap:var(--ed-space-3);display:flex}.s07-disabled-audio i{border-radius:var(--ed-radius-pill);background:var(--ed-color-border-strong);flex:1;height:.35rem}.s07-disabled-audio span{color:var(--ed-color-text-secondary)}.s07-disabled-audio small{grid-column:1/-1}.s07-check-list{margin-top:var(--ed-space-4);gap:var(--ed-space-2);display:grid}.s07-check-list label{min-height:3.2rem;padding:var(--ed-space-3);border:1px solid var(--ed-color-border);border-radius:var(--ed-radius-md);gap:var(--ed-space-3);cursor:pointer;grid-template-columns:1.8rem minmax(0,1fr);align-items:center;display:grid}.s07-check-list input{opacity:0;pointer-events:none;position:absolute}.s07-check-list label>span{aspect-ratio:1;border:1px solid var(--ed-color-border-strong);border-radius:var(--ed-radius-sm);color:#fff;grid-column:1;place-items:center;width:1.8rem;height:1.8rem;display:grid}.s07-check-list label>strong{color:var(--ed-color-navy-900);grid-column:2}.s07-check-list label.is-checked{border-color:color-mix(in srgb, var(--ed-color-success) 35%, var(--ed-color-border));background:var(--ed-color-success-soft)}.s07-check-list label.is-checked>span{border-color:var(--ed-color-success);background:var(--ed-color-success)}.s07-check-list label.is-checked>strong{color:var(--ed-color-success)}.s07-submit-card{text-align:center}.s07-submit-card .s07-section-heading{text-align:left}.s07-submit-card>p{margin:var(--ed-space-3) 0 0;color:var(--ed-color-text-secondary)}.s07-submission-message{margin-top:var(--ed-space-3);color:var(--ed-color-text-secondary)}.s07-submission-message strong{color:var(--ed-color-success)}.s07-submission-message p{margin:var(--ed-space-2) 0 0}.s07-submission-message .ui-button{margin-top:var(--ed-space-3)}.s07-text-answer textarea[readonly]{background:var(--ed-color-surface-muted)}.homework-result-page{gap:var(--ed-space-5);display:grid}.homework-result-page>.back-link{justify-self:start}.homework-result-hero{padding:clamp(var(--ed-space-5), 4vw, var(--ed-space-8));border:1px solid var(--ed-color-border);border-radius:var(--ed-radius-xl);background:linear-gradient(125deg, #fff 35%, var(--ed-color-burgundy-100))}.homework-result-hero h1{margin-bottom:var(--ed-space-4);color:var(--ed-color-navy-900);font-family:var(--ed-font-display)}.homework-result-lesson{margin:0 0 var(--ed-space-4);align-items:baseline;gap:var(--ed-space-2) var(--ed-space-4);color:var(--ed-color-text-secondary);flex-wrap:wrap;display:flex}.homework-result-lesson strong{color:var(--ed-color-navy-900);font-family:var(--ed-font-display);font-size:clamp(1.5rem,3vw,2rem)}.homework-result-state p{color:var(--ed-color-text-secondary)}.homework-result-answer{border-top:3px solid var(--ed-color-burgundy-700)}.homework-result-feedback{gap:var(--ed-space-4);grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.homework-result-feedback>*{min-width:0}.homework-result-comment{grid-column:1/-1}.homework-result-text{margin:var(--ed-space-3) 0 0;white-space:pre-wrap;overflow-wrap:anywhere}.homework-result-chinese{color:var(--ed-color-navy-900);font-family:var(--ed-font-display);font-size:var(--ed-font-size-xl);line-height:1.75}.homework-result-actions{gap:var(--ed-space-3);flex-wrap:wrap;display:flex}@media (max-width:700px){.homework-result-feedback{grid-template-columns:minmax(0,1fr)}.homework-result-comment{grid-column:auto}}.written-homework-answer{white-space:pre-wrap;overflow-wrap:anywhere}.teacher-review-card{grid-column:1/-1}.teacher-feedback-fields{grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem;margin-top:1rem;display:grid}.teacher-feedback-field{gap:.5rem;min-width:0;font-weight:700;display:grid}.teacher-feedback-field:last-child{grid-column:1/-1}.teacher-feedback-field textarea{resize:vertical;border:1px solid var(--line);width:100%;min-width:0;color:var(--ink);background:#fff;border-radius:.7rem;padding:.85rem 1rem;font-weight:400;line-height:1.5}.teacher-feedback-field textarea:focus{outline:2px solid var(--red);outline-offset:2px}.teacher-review-actions{flex-wrap:wrap;align-items:center;gap:1rem;margin-top:1.25rem;display:flex}.teacher-review-actions p{margin:0}.teacher-review-actions .button:disabled{cursor:not-allowed;opacity:.55}@media (max-width:700px){.teacher-feedback-fields{grid-template-columns:minmax(0,1fr)}.teacher-feedback-field:last-child{grid-column:auto}}.s07-submit-disabled,.s07-next-disabled{border-color:var(--ed-color-border);color:var(--ed-color-text-secondary);background:var(--ed-color-surface-muted);box-shadow:none}.s07-bottom-navigation{gap:var(--ed-space-5);grid-template-columns:auto minmax(12rem,1fr) auto;align-items:center;display:grid}.s07-bottom-navigation>div{gap:var(--ed-space-2);color:var(--ed-color-text-secondary);text-align:center;font-size:var(--ed-font-size-sm);display:grid}.s07-bottom-navigation i{border-radius:var(--ed-radius-pill);background:var(--ed-color-cream-200);height:.4rem;overflow:hidden}.s07-bottom-navigation i b{border-radius:inherit;background:var(--ed-color-burgundy-700);width:83.333%;height:100%;display:block}.s07-progress-card{border-top:3px solid var(--ed-color-navy-700)}.s07-stage-count{margin:var(--ed-space-3) 0;align-items:center;gap:var(--ed-space-3);display:flex}.s07-stage-count>strong{color:var(--ed-color-burgundy-700);font-family:var(--ed-font-display);font-size:3.2rem;line-height:1}.s07-stage-count>span{color:var(--ed-color-navy-900);font-weight:var(--ed-font-weight-bold);display:grid}.s07-stage-count small{color:var(--ed-color-text-secondary);font-weight:var(--ed-font-weight-medium)}.s07-progress-card ol{gap:var(--ed-space-1);margin:0;padding:0;list-style:none;display:grid}.s07-progress-card li{min-height:2.4rem;padding:var(--ed-space-2);border-radius:var(--ed-radius-sm);gap:var(--ed-space-2);color:var(--ed-color-text-secondary);grid-template-columns:auto minmax(0,1fr) auto;align-items:center;display:grid}.s07-progress-card li>span{aspect-ratio:1;border:1px solid var(--ed-color-border-strong);width:1.65rem;min-width:1.65rem;max-width:1.65rem;height:1.65rem;min-height:1.65rem;max-height:1.65rem;font-size:var(--ed-font-size-xs);border-radius:50%;flex:0 0 1.65rem;place-self:center start;place-items:center;line-height:1;display:grid}.s07-progress-card li strong{font-size:var(--ed-font-size-sm)}.s07-progress-card li small{font-size:var(--ed-font-size-xs)}.s07-progress-card li.is-complete{color:var(--ed-color-success)}.s07-progress-card li.is-complete>span{color:#fff;border-color:var(--ed-color-success);background:var(--ed-color-success)}.s07-progress-card li.is-current{color:var(--ed-color-burgundy-800);background:var(--ed-color-burgundy-100)}.s07-progress-card li.is-current>span{color:#fff;border-color:var(--ed-color-burgundy-700);background:var(--ed-color-burgundy-700)}.s07-reminder-card>div{margin:var(--ed-space-3) 0;gap:var(--ed-space-2);flex-wrap:wrap;display:flex}.s07-reminder-card>div span{padding:var(--ed-space-2) var(--ed-space-3);border:1px solid var(--ed-color-border);border-radius:var(--ed-radius-pill);color:var(--ed-color-navy-900);background:var(--ed-color-surface-muted);font-family:var(--ed-font-display)}.s07-reminder-card>small{color:var(--ed-color-text-secondary)}.s07-tip-card{gap:var(--ed-space-3);grid-template-columns:auto minmax(0,1fr);align-items:center;display:grid}.s07-tip-card>span{color:var(--ed-color-gold-500);font-family:var(--ed-font-display);font-size:2.4rem}.s07-tip-card p{color:var(--ed-color-text-secondary);margin:0;display:grid}.s07-tip-card strong{color:var(--ed-color-navy-900)}@media (max-width:1120px){.s07-layout{grid-template-columns:1fr}.s07-side-column{grid-template-columns:repeat(2,minmax(0,1fr))}.s07-tip-card{grid-column:1/-1}}@media (max-width:780px){.s07-hero,.s07-builder-grid,.s07-future-methods,.s07-side-column{grid-template-columns:1fr}.s07-support-words{grid-template-columns:repeat(2,minmax(0,1fr))}.s07-tip-card{grid-column:auto}}@media (max-width:560px){.s07-hero{padding:var(--ed-space-4)}.s07-support-words{grid-template-columns:1fr 1fr}.s07-method-heading{grid-template-columns:auto minmax(0,1fr)}.s07-method-heading .ui-badge{grid-column:2;justify-self:start}.s07-bottom-navigation{gap:var(--ed-space-3);grid-template-columns:1fr 1fr}.s07-bottom-navigation>div{grid-area:1/1/auto/-1}}