.ttol-shell{max-width:1200px;margin:0 auto;padding:20px 16px}.ttol-hero{border:1px solid #e2e8f0;background:linear-gradient(120deg,rgba(12,88,110,.10),rgba(233,115,14,.06)),#fff;border-radius:24px;padding:28px 22px;margin:8px 0 20px}.ttol-hero h1{margin:0 0 8px;font-size:clamp(24px,4vw,36px)}.ttol-hero p{margin:0;color:#64748b}
.ttol-card{background:#fff;border:1px solid #e2e8f0;border-radius:16px;padding:18px;box-shadow:0 8px 24px rgba(15,23,42,.06)}
.ttol-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px}.ttol-chip{display:inline-flex;padding:6px 10px;border-radius:999px;background:#eef2ff;color:#3730a3;border:1px solid #e2e8f0;font-size:13px}.ttol-btn{border:0;border-radius:11px;padding:10px 14px;background:#0c586e;color:#fff;text-decoration:none;cursor:pointer}.ttol-btn.alt{background:#e9730e}
/* 5.2 Learning Workspace */
.ttol-app{--ink:#132238;--muted:#66758a;--line:#e5eaf0;--paper:#f7f9fc;color:var(--ink);background:var(--paper);min-height:100vh}.ttol-skip{position:absolute;left:-9999px}.ttol-skip:focus{left:12px;top:12px;z-index:999;background:#fff;padding:10px;border-radius:8px}.ttol-nav{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.ttol-nav-inner{max-width:1180px;margin:auto;min-height:68px;padding:0 18px;display:flex;align-items:center;justify-content:space-between;gap:20px}.ttol-brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink)}.ttol-brand-mark{display:grid;place-items:center;width:38px;height:38px;border-radius:12px;background:#132238;color:#fff;font-size:20px}.ttol-brand small,.ttol-brand strong{display:block}.ttol-brand small{font-size:11px;color:var(--muted);margin-top:2px}.ttol-nav nav{display:flex;gap:6px;flex-wrap:wrap}.ttol-nav nav a{padding:9px 12px;border-radius:9px;text-decoration:none;color:#4c5b70;font-size:14px}.ttol-nav nav a:hover{background:#eef2f7;color:var(--ink)}.ttol-main{max-width:1180px;margin:auto;padding:28px 18px 70px}.ttol-hero-modern{display:grid;grid-template-columns:1fr 280px;gap:25px;align-items:center;padding:42px;border-radius:28px;background:linear-gradient(135deg,#fff,#eef4f8);border:1px solid var(--line);overflow:hidden}.ttol-hero-modern h1{max-width:760px;font-size:clamp(32px,5vw,58px);line-height:1.04;margin:10px 0 18px;letter-spacing:-.04em}.ttol-hero-modern p,.ttol-page-head p{color:var(--muted);max-width:700px;font-size:17px;line-height:1.65}.ttol-hero-kanji{width:220px;height:220px;border-radius:50%;display:grid;place-items:center;background:#132238;color:#fff;justify-self:center;transform:rotate(5deg);box-shadow:0 24px 60px rgba(19,34,56,.18)}.ttol-hero-kanji span{font-size:110px}.ttol-hero-kanji small{position:absolute;margin-top:190px;letter-spacing:.25em;font-size:10px;opacity:.65}.ttol-eyebrow{font-size:11px;font-weight:800;letter-spacing:.16em;color:#748297}.ttol-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}.ttol-btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 17px;border-radius:11px;text-decoration:none;border:1px solid var(--line);background:#fff;color:var(--ink);font-weight:700}.ttol-btn.primary{background:#132238;color:#fff;border-color:#132238}.ttol-btn.ghost:hover{background:#f0f3f7}.ttol-section{margin-top:38px}.ttol-section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:15px}.ttol-section-head h2{margin:5px 0 0;font-size:25px}.ttol-section-head a{color:#40536b;text-decoration:none;font-weight:700}.ttol-grid-modern{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:15px}.ttol-learning-card{display:block;padding:21px;border:1px solid var(--line);border-radius:17px;background:#fff;text-decoration:none;color:var(--ink);transition:transform .16s ease,box-shadow .16s ease}.ttol-learning-card:hover{transform:translateY(-2px);box-shadow:0 15px 35px rgba(20,35,55,.08)}.ttol-learning-card h2,.ttol-learning-card h3{margin:13px 0 8px}.ttol-learning-card p{color:var(--muted);line-height:1.55;min-height:48px}.ttol-learning-card a,.ttol-learning-card>span:last-child{font-weight:800;color:#31526d}.ttol-card-index{font-size:10px;letter-spacing:.14em;font-weight:800;color:#8190a3}.ttol-tool-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.ttol-tool-grid a{background:#fff;border:1px solid var(--line);border-radius:15px;padding:19px;text-decoration:none;color:var(--ink)}.ttol-tool-grid strong,.ttol-tool-grid span{display:block}.ttol-tool-grid span{color:var(--muted);font-size:14px;line-height:1.5;margin-top:7px}.ttol-page-head{padding:18px 0 24px}.ttol-page-head h1{font-size:clamp(32px,5vw,48px);margin:8px 0}.ttol-search{display:block;width:min(520px,100%);box-sizing:border-box;padding:13px 15px;border:1px solid #d8e0e8;border-radius:11px;background:#fff;font-size:16px;margin-top:20px}.ttol-empty{padding:30px;background:#fff;border:1px dashed #ccd5df;border-radius:15px;color:var(--muted)}.ttol-workspace-toolbar{display:flex;align-items:center;justify-content:space-between;margin:0 0 16px;color:var(--muted)}.ttol-word-list{display:grid;gap:10px}.ttol-word-card{background:#fff;border:1px solid var(--line);border-radius:15px;padding:16px 18px;display:flex;align-items:center;justify-content:space-between;gap:20px}.ttol-word-main{display:grid;grid-template-columns:80px 130px minmax(0,1fr);gap:16px;align-items:center}.ttol-hanzi{font-size:32px}.ttol-pinyin{color:#526a84}.ttol-word-main strong{font-weight:600}.ttol-word-actions{display:flex;gap:7px}.ttol-mini{display:inline-flex;border:1px solid #dbe2e9;background:#fff;color:#33475e;border-radius:9px;padding:8px 10px;text-decoration:none;font-size:13px;cursor:pointer}.ttol-mini:hover{background:#f3f6f9}@media(max-width:800px){.ttol-nav-inner{align-items:flex-start;padding-top:10px;padding-bottom:10px;flex-direction:column}.ttol-nav nav{width:100%;overflow:auto;flex-wrap:nowrap}.ttol-nav nav a{white-space:nowrap}.ttol-hero-modern{grid-template-columns:1fr;padding:28px}.ttol-hero-kanji{width:150px;height:150px}.ttol-hero-kanji span{font-size:72px}.ttol-hero-kanji small{margin-top:125px}.ttol-tool-grid{grid-template-columns:1fr 1fr}.ttol-word-main{grid-template-columns:60px 100px 1fr;gap:9px}.ttol-word-card{align-items:flex-start;flex-direction:column}.ttol-word-actions{width:100%}}@media(max-width:520px){.ttol-main{padding-left:12px;padding-right:12px}.ttol-hero-modern h1{font-size:34px}.ttol-tool-grid{grid-template-columns:1fr}.ttol-word-main{grid-template-columns:1fr 1fr}.ttol-word-main strong{grid-column:1/-1}.ttol-actions .ttol-btn{width:100%}}
/* 5.3 Learning Engine */
.ttol-learning-engine{margin-top:8px}.ttol-engine-head{display:flex;justify-content:space-between;gap:24px;align-items:flex-end;background:#132238;color:#fff;border-radius:22px;padding:24px;margin-bottom:14px}.ttol-engine-head h2{margin:5px 0 6px;font-size:28px}.ttol-engine-head p{margin:0;color:#b8c4d3;max-width:680px;line-height:1.55}.ttol-engine-stats{display:flex;gap:10px;flex-wrap:wrap;justify-content:flex-end}.ttol-engine-stats span{padding:9px 12px;border:1px solid rgba(255,255,255,.14);border-radius:10px;color:#cbd5e1;font-size:12px}.ttol-engine-stats strong{color:#fff;font-size:17px;margin-right:3px}.ttol-progress-track{height:6px;border-radius:999px;background:#e6ebf0;overflow:hidden;margin:0 0 18px}.ttol-progress-track span{display:block;height:100%;background:#3b7c8c;transition:width .25s ease}.ttol-word-card.is-reviewed{border-color:#b9cbd0;background:#fbfdfd}.ttol-word-card.is-due{box-shadow:0 0 0 2px rgba(59,124,140,.08)}.ttol-next-action{font-size:12px;color:#527084;margin-top:8px}.ttol-load-more{display:flex;justify-content:center;margin:18px 0}.ttol-mini.is-active{font-weight:800}.ttol-mini[data-ttol-result="correct"]:hover{border-color:#8ab99d}.ttol-mini[data-ttol-result="incorrect"]:hover{border-color:#d6a2a2}@media(max-width:800px){.ttol-engine-head{align-items:flex-start;flex-direction:column}.ttol-engine-stats{justify-content:flex-start}.ttol-word-actions{flex-wrap:wrap}}
.ttol-queue-banner{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:0 0 14px;padding:12px 15px;border:1px solid #dbe5e8;border-radius:14px;background:#f7fbfb}.ttol-queue-banner strong{font-size:14px}.ttol-queue-banner span{font-size:12px;color:#607487}.ttol-learning-item[hidden]{display:none!important}@media(max-width:650px){.ttol-queue-banner{align-items:flex-start;flex-direction:column}}
.ttol-session-planner{display:grid;grid-template-columns:minmax(0,1.5fr) 150px 110px auto;gap:14px;align-items:end;margin:0 0 12px;padding:17px;border:1px solid var(--line);border-radius:16px;background:#fff}.ttol-session-planner strong,.ttol-session-planner small{display:block}.ttol-session-planner strong{margin-top:4px}.ttol-session-planner small{color:var(--muted);margin-top:5px;line-height:1.4}.ttol-session-planner label span{display:block;font-size:11px;font-weight:700;color:var(--muted);margin-bottom:5px}.ttol-session-planner select{width:100%;padding:10px;border:1px solid #d8e0e8;border-radius:9px;background:#fff}.ttol-session-planner .ttol-btn{white-space:nowrap}.ttol-session-progress{display:none}.ttol-session-progress.is-active{display:block}@media(max-width:800px){.ttol-session-planner{grid-template-columns:1fr 1fr}.ttol-session-planner>div{grid-column:1/-1}.ttol-session-planner .ttol-btn{width:100%}}@media(max-width:520px){.ttol-session-planner{grid-template-columns:1fr}}

/* 6.0 Unified Learning Experience */
.ttol-unified{--u-ink:#122033;--u-muted:#6a788a;--u-line:#e4e9ef;--u-paper:#f5f7fa;color:var(--u-ink);background:var(--u-paper);border:1px solid var(--u-line);border-radius:28px;overflow:hidden}.ttol-unified-top{display:flex;justify-content:space-between;gap:30px;padding:34px;background:#fff;border-bottom:1px solid var(--u-line)}.ttol-unified-top h1{font-size:clamp(30px,5vw,52px);line-height:1.05;margin:8px 0 12px;letter-spacing:-.04em}.ttol-unified-top p{max-width:720px;color:var(--u-muted);line-height:1.6;margin:0}.ttol-unified-metrics{display:flex;gap:8px;align-items:flex-start;flex-wrap:wrap;justify-content:flex-end}.ttol-unified-metrics span{padding:10px 12px;background:#f4f6f8;border:1px solid var(--u-line);border-radius:11px;font-size:12px;white-space:nowrap}.ttol-unified-metrics b{font-size:17px;margin-right:3px}.ttol-unified-layout{display:grid;grid-template-columns:280px minmax(0,1fr)}.ttol-unified-sidebar{padding:18px;border-right:1px solid var(--u-line);background:#f8fafc}.ttol-unified-panel{padding:17px;background:#fff;border:1px solid var(--u-line);border-radius:16px;margin-bottom:12px}.ttol-unified-label{display:block;font-size:12px;font-weight:700;color:var(--u-muted);margin:14px 0 6px}.ttol-unified-select{width:100%;box-sizing:border-box;padding:11px;border:1px solid #d7dfe7;border-radius:10px;background:#fff}.ttol-unified-focus{display:block;font-size:19px;margin-top:8px}.ttol-unified-panel p{font-size:13px;color:var(--u-muted);line-height:1.55}.ttol-unified-mix{display:grid;gap:7px}.ttol-unified-mix span{display:flex;justify-content:space-between;font-size:12px;color:var(--u-muted)}.ttol-unified-mix b{color:var(--u-ink)}.ttol-unified-nav{display:grid;gap:4px}.ttol-unified-nav a{padding:10px 11px;border-radius:9px;text-decoration:none;color:#45566b;font-weight:700;font-size:13px}.ttol-unified-nav a:hover{background:#fff}.ttol-unified-main{padding:22px;min-width:0}.ttol-unified-session{background:#fff;border:1px solid var(--u-line);border-radius:20px;padding:20px}.ttol-unified-session-head{display:flex;justify-content:space-between;align-items:center;gap:15px}.ttol-unified-session-head h2{font-size:20px;margin:5px 0 0}.ttol-unified-steps{display:flex;gap:7px;overflow:auto;margin:0 0 16px}.ttol-unified-steps span{padding:7px 10px;border-radius:999px;background:#f1f4f7;color:#718095;font-size:11px;white-space:nowrap}.ttol-unified-steps .is-active{background:#122033;color:#fff}.ttol-unified-cards{display:grid;gap:12px}.ttol-unified-card{padding:22px;border:1px solid var(--u-line);border-radius:17px;background:linear-gradient(180deg,#fff,#fbfcfd)}.ttol-unified-card-top{display:flex;justify-content:space-between;gap:10px;color:#8290a0;font-size:10px;font-weight:800;letter-spacing:.12em}.ttol-unified-card-top small{font-size:11px;letter-spacing:0;color:#527084}.ttol-unified-hanzi{font-size:58px;line-height:1.1;margin-top:18px}.ttol-unified-pinyin{font-size:17px;color:#527084;margin-top:7px}.ttol-unified-meaning{font-size:16px;font-weight:650;margin-top:8px}.ttol-unified-card-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:20px}.ttol-unified-card[hidden]{display:none!important}@media(max-width:850px){.ttol-unified-top{flex-direction:column;padding:25px}.ttol-unified-metrics{justify-content:flex-start}.ttol-unified-layout{grid-template-columns:1fr}.ttol-unified-sidebar{border-right:0;border-bottom:1px solid var(--u-line)}.ttol-unified-nav{grid-template-columns:repeat(2,1fr)}}@media(max-width:520px){.ttol-unified-main{padding:12px}.ttol-unified-session{padding:14px}.ttol-unified-session-head{align-items:flex-start;flex-direction:column}.ttol-unified-card{padding:17px}.ttol-unified-hanzi{font-size:48px}}
/* 6.2 Smart Activity */
.ttol-activity{max-width:760px;margin:24px auto;background:#fff;border:1px solid #e4e9ef;border-radius:24px;overflow:hidden;color:#122033}.ttol-activity-head{display:flex;justify-content:space-between;gap:16px;align-items:center;padding:20px 24px;border-bottom:1px solid #e8edf2}.ttol-activity-skill{font-size:11px;font-weight:800;letter-spacing:.08em;padding:7px 10px;border-radius:999px;background:#f2f5f8}.ttol-activity-body{padding:30px}.ttol-activity-body>small{display:inline-block;text-transform:uppercase;letter-spacing:.1em;font-size:10px;color:#7a8898;font-weight:800}.ttol-activity-body h2{font-size:clamp(22px,4vw,34px);line-height:1.2;margin:10px 0 18px}.ttol-activity-display{font-size:48px;font-weight:700;margin:18px 0}.ttol-activity-hint{color:#6a788a}.ttol-activity-options{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:24px}.ttol-activity-option{appearance:none;border:1px solid #dce3ea;background:#fff;border-radius:14px;padding:15px;text-align:left;font:inherit;font-weight:650;cursor:pointer}.ttol-activity-option:hover,.ttol-activity-option:focus{border-color:#9eacba;background:#f8fafc}.ttol-activity-option.is-correct{border-color:#208454;background:#edf9f2}.ttol-activity-option.is-wrong{border-color:#bd4141;background:#fff1f1}.ttol-activity-feedback{margin-top:16px;padding:12px 14px;border-radius:12px;background:#f4f6f8;font-weight:650}.ttol-activity-feedback[hidden]{display:none}@media(max-width:600px){.ttol-activity-head{padding:16px;align-items:flex-start;flex-direction:column}.ttol-activity-body{padding:20px}.ttol-activity-options{grid-template-columns:1fr}.ttol-activity-display{font-size:40px}}

/* 7.2 Interactive Activity Runtime */
.ttol-lesson-runtime{max-width:900px;margin:0 auto;padding:28px 18px 70px;color:#132238}.ttol-lesson-head{display:grid;grid-template-columns:1fr 220px;gap:24px;align-items:end;margin-bottom:24px}.ttol-lesson-head h1{font-size:clamp(30px,5vw,52px);line-height:1.05;margin:8px 0 12px}.ttol-lesson-head p{color:#66758a;line-height:1.6}.ttol-lesson-progress strong{display:block;text-align:right;margin-bottom:8px}.ttol-lesson-card{background:#fff;border:1px solid #e5eaf0;border-radius:26px;padding:clamp(24px,5vw,48px);box-shadow:0 18px 50px rgba(15,23,42,.08)}.ttol-lesson-meta{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:24px}.ttol-lesson-meta span{padding:7px 10px;border:1px solid #e5eaf0;border-radius:999px;font-size:12px;font-weight:700}.ttol-lesson-display{font-size:clamp(38px,8vw,76px);font-weight:800;text-align:center;min-height:90px;display:grid;place-items:center;margin:10px 0}.ttol-lesson-card h2{text-align:center;font-size:clamp(21px,3vw,30px);margin:18px 0}.ttol-lesson-card .ttol-activity-hint{text-align:center;color:#66758a;min-height:24px}.ttol-lesson-typed{display:flex;gap:10px;max-width:620px;margin:26px auto 0}.ttol-lesson-typed .ttol-activity-input{flex:1;min-width:0}.ttol-lesson-runtime .ttol-activity-option{display:block;width:100%;margin:10px 0;padding:14px 16px;border:1px solid #e5eaf0;border-radius:13px;background:#fff;text-align:left;cursor:pointer}.ttol-lesson-runtime .ttol-activity-option:hover{border-color:#132238}.ttol-lesson-runtime .ttol-btn{margin:8px 4px}.ttol-lesson-runtime .ttol-activity-feedback{margin-top:22px;text-align:center;font-weight:700}.ttol-lesson-runtime .ttol-progress-track{height:9px}@media(max-width:700px){.ttol-lesson-head{grid-template-columns:1fr}.ttol-lesson-progress strong{text-align:left}.ttol-lesson-typed{flex-direction:column}.ttol-lesson-card{padding:24px 18px}}
/* 7.0 Learner Intelligence */
.ttol-learning-plan{max-width:1000px;margin:0 auto;padding:10px 0 50px}.ttol-plan-grid{display:grid;grid-template-columns:1.35fr 1fr 1fr;gap:14px}.ttol-plan-hero,.ttol-plan-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:22px;min-height:145px}.ttol-plan-hero{background:linear-gradient(135deg,#132238,#29465e);color:#fff}.ttol-plan-hero strong,.ttol-plan-card strong{display:block;font-size:30px;margin:12px 0 6px}.ttol-plan-hero span:not(.ttol-eyebrow),.ttol-plan-hero small,.ttol-plan-card small{display:block;line-height:1.5;color:var(--muted)}.ttol-plan-hero span:not(.ttol-eyebrow){color:#d9e3eb}.ttol-plan-hero small{color:#c3d0dc;margin-top:14px}.ttol-plan-section{margin-top:30px}.ttol-plan-skills{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.ttol-plan-skill{background:#fff;border:1px solid var(--line);border-radius:15px;padding:16px}.ttol-plan-skill>div{margin-top:10px}.ttol-plan-skill b{float:right}.ttol-plan-skill .ttol-progress-track{margin:10px 0 0;height:7px}.ttol-learning-plan .ttol-dashboard-actions{margin-top:22px}@media(max-width:800px){.ttol-plan-grid,.ttol-plan-skills{grid-template-columns:1fr}.ttol-plan-hero,.ttol-plan-card{min-height:auto}}