:root{
  --ink:#17355d;
  --ink-2:#36526f;
  --paper:#f6f9fd;
  --card:#ffffff;
  --line:#d9e5f3;
  --accent:#2e6db4;
  --accent-2:#7bb8ff;
  --mint:#2b8a6e;
  --mint-soft:#e9f7f2;
  --warn:#a95b22;
  --warn-soft:#fff4e8;
  --bad:#a84444;
  --bad-soft:#fff0f0;
  --good:#187a5a;
  --good-soft:#e9f7f1;
  --shadow:0 14px 40px rgba(23,53,93,.12);
  --radius:24px;
}
*{box-sizing:border-box}
html,body{margin:0;min-height:100%;background:var(--paper);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
body{min-height:100vh}
.topbar{position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:14px clamp(16px,3vw,40px);background:rgba(255,255,255,.95);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
.brand{display:flex;align-items:center;gap:14px;min-width:0}
.brand-mark{width:46px;height:46px;border-radius:16px;background:linear-gradient(145deg,var(--ink),var(--accent));color:white;display:grid;place-items:center;font-weight:900;letter-spacing:.04em;box-shadow:0 8px 20px rgba(46,109,180,.24)}
.eyebrow{font-size:.78rem;color:var(--ink-2);font-weight:700;letter-spacing:.02em}
.brand-title{font-size:1.14rem;font-weight:850;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.top-stats{display:flex;gap:10px;flex-shrink:0}
.top-stats>div{min-width:78px;text-align:center;border:1px solid var(--line);background:#fff;border-radius:14px;padding:7px 10px;line-height:1.05}
.top-stats span{font-weight:900;font-size:1.05rem}.top-stats small{font-size:.78rem;color:var(--ink-2)}.top-stats label{display:block;margin-top:4px;font-size:.65rem;color:#6b7e92;text-transform:uppercase;letter-spacing:.07em;font-weight:800}
.shell{display:grid;grid-template-columns:270px minmax(0,1fr);max-width:1380px;margin:0 auto;padding:24px clamp(14px,3vw,34px) 36px;gap:24px}
.sidebar{position:sticky;top:92px;height:max-content;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}
.progress-ring{--size:112px;width:var(--size);height:var(--size);margin:4px auto 18px;border-radius:50%;display:grid;place-items:center;background:conic-gradient(var(--accent) calc(var(--p)*1%),#e8eff8 0);position:relative}
.progress-ring:after{content:"";position:absolute;inset:10px;background:#fff;border-radius:50%}
.progress-ring span{position:relative;z-index:1;font-weight:900;font-size:1.25rem}
.mission-nav{display:grid;gap:8px}
.mission-btn{display:grid;grid-template-columns:34px 1fr auto;align-items:center;gap:9px;width:100%;border:1px solid transparent;background:#f7f9fc;border-radius:14px;padding:10px;text-align:left;color:var(--ink)}
.mission-btn:hover{border-color:#cbdcf0}.mission-btn.active{background:#eaf3ff;border-color:#bcd6f5}.mission-btn.done .mission-num{background:var(--good);color:white}.mission-num{width:30px;height:30px;border-radius:10px;display:grid;place-items:center;background:#dfe9f6;font-weight:850;font-size:.8rem}.mission-copy strong{display:block;font-size:.83rem}.mission-copy span{display:block;font-size:.69rem;color:#6f8398;margin-top:2px}.mission-state{font-size:.72rem;font-weight:800;color:var(--good)}
.side-note{margin-top:16px;border-top:1px solid var(--line);padding-top:14px;font-size:.76rem;color:var(--ink-2);line-height:1.5}.side-note strong{color:var(--ink)}.side-note p{margin:5px 0 0}
.content{min-width:0}.screen{min-height:660px;background:#fff;border:1px solid var(--line);border-radius:30px;padding:clamp(20px,4vw,42px);box-shadow:var(--shadow)}
.hero{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(280px,.85fr);gap:30px;align-items:center}.hero-art{min-height:360px;border-radius:28px;background:linear-gradient(145deg,#e9f3ff,#eefaf6);border:1px solid #d6e6f8;display:flex;align-items:center;justify-content:center;padding:20px;overflow:hidden}.hero-art-inner{max-width:520px;width:100%}.hero-art img{display:block;width:100%;height:auto;max-height:430px;object-fit:cover;border-radius:22px;box-shadow:0 10px 26px rgba(23,53,93,.12)}.hero-kicker{display:inline-flex;align-items:center;gap:8px;padding:7px 11px;border-radius:999px;background:#e9f3ff;color:var(--accent);font-weight:800;font-size:.78rem}.hero h1{font-size:clamp(2rem,4vw,3.5rem);line-height:1.02;margin:14px 0 14px;letter-spacing:-.035em}.hero p{font-size:1rem;line-height:1.65;color:var(--ink-2);margin:0 0 18px}.hero-points{display:grid;gap:9px;margin:18px 0 24px}.hero-point{display:flex;gap:10px;align-items:flex-start}.hero-point b{min-width:24px;height:24px;border-radius:8px;background:#e9f7f2;color:var(--good);display:grid;place-items:center;font-size:.75rem}.hero-point span{font-size:.9rem;line-height:1.4}
.identity-card{background:#fff;border:1px solid var(--line);border-radius:24px;padding:20px;box-shadow:0 10px 28px rgba(23,53,93,.08)}.identity-card h2{margin:0 0 5px;font-size:1.15rem}.identity-card p{margin:0 0 16px;color:var(--ink-2);font-size:.86rem}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.field{display:grid;gap:6px}.field.full{grid-column:1/-1}.field label{font-size:.75rem;font-weight:800;color:var(--ink-2)}.field input,.field select{width:100%;border:1px solid #c9d8e8;border-radius:12px;padding:12px 13px;outline:none;background:#fff;color:var(--ink)}.field input:focus,.field select:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(46,109,180,.12)}
.btn-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:20px}.btn{border:0;border-radius:13px;padding:11px 16px;font-weight:850;transition:.15s transform,.15s box-shadow,.15s opacity}.btn:hover{transform:translateY(-1px)}.btn-primary{background:linear-gradient(135deg,var(--ink),var(--accent));color:#fff;box-shadow:0 10px 20px rgba(46,109,180,.2)}.btn-secondary{background:#edf3fa;color:var(--ink)}.btn-ghost{background:#fff;color:var(--ink);border:1px solid var(--line)}.btn-good{background:var(--good);color:white}.btn-warn{background:var(--warn);color:white}.btn:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.screen-head{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;margin-bottom:24px}.mission-kicker{font-size:.78rem;font-weight:900;color:var(--accent);text-transform:uppercase;letter-spacing:.08em}.screen-head h1{margin:5px 0 6px;font-size:clamp(1.7rem,3vw,2.55rem);letter-spacing:-.025em}.screen-head p{margin:0;color:var(--ink-2);line-height:1.55;max-width:760px}.score-pill{background:#eef5ff;border:1px solid #cfe0f6;border-radius:16px;padding:9px 13px;font-weight:900;white-space:nowrap}.score-pill small{font-size:.7rem;color:#6d8197;display:block;text-transform:uppercase;letter-spacing:.06em}
.teacher-tip{display:flex;gap:14px;align-items:center;padding:14px 16px;border-radius:16px;background:#f4f8fd;border:1px solid #d8e5f4;margin:18px 0}.teacher-tip .tip-copy{flex:1}.teacher-tip strong{display:block;font-size:.82rem}.teacher-tip p{margin:3px 0 0;font-size:.82rem;color:var(--ink-2);line-height:1.45}.tts-btn{white-space:nowrap}
.task-card{border:1px solid var(--line);border-radius:24px;padding:20px;background:#fff}.task-top{display:flex;justify-content:space-between;gap:14px;align-items:center;margin-bottom:14px}.task-count{font-size:.75rem;color:#6b7d91;font-weight:800}.attempt-chip{font-size:.72rem;background:#f1f4f8;border-radius:999px;padding:6px 9px;font-weight:800;color:var(--ink-2)}
.visual{width:100%;border-radius:20px;overflow:hidden;border:1px solid #d6e3f1;background:#f6f9fd;margin:14px 0}.visual img{display:block;width:100%;height:auto;max-height:410px;object-fit:contain}
.audio-card{display:flex;align-items:center;gap:12px;border:1px solid #cfe0f5;background:#f4f8fd;border-radius:16px;padding:12px 13px;margin:14px 0}.audio-icon{width:48px;height:48px;border-radius:14px;background:#17355d;color:#fff;display:grid;place-items:center;font-size:.62rem;font-weight:900;letter-spacing:.06em}.audio-copy{flex:1;min-width:0}.audio-label{display:block;font-size:.84rem}.audio-sub{display:block;color:#6a7f94;font-size:.74rem;margin-top:2px}.btn-audio{background:#e7f1ff;color:var(--accent);min-width:82px}.btn-audio.playing{background:var(--accent);color:#fff}
.question{font-size:1.15rem;font-weight:800;line-height:1.45;margin:16px 0}.choice-grid{display:grid;gap:10px}.choice{width:100%;border:1px solid #cddbea;background:#fff;border-radius:14px;padding:13px 14px;text-align:left;display:flex;gap:11px;align-items:flex-start;color:var(--ink)}.choice:hover{border-color:#94b9e8;background:#f8fbff}.choice.selected{border-color:var(--accent);background:#eaf3ff;box-shadow:0 0 0 2px rgba(46,109,180,.08)}.choice.locked{pointer-events:none}.choice .letter{width:26px;height:26px;border-radius:9px;background:#e8eff8;display:grid;place-items:center;font-weight:900;font-size:.78rem;flex:0 0 auto}.choice.selected .letter{background:var(--accent);color:#fff}.choice-text{line-height:1.45;font-size:.9rem}
.feedback{margin-top:14px;border-radius:16px;padding:13px 14px;font-size:.86rem;line-height:1.5}.feedback.good{background:var(--good-soft);border:1px solid #b8e2d4;color:#145d47}.feedback.warn{background:var(--warn-soft);border:1px solid #f0d3b3;color:#7a471d}.feedback.bad{background:var(--bad-soft);border:1px solid #edc4c4;color:#7f3535}.feedback strong{display:block;margin-bottom:3px}
.mini-progress{height:9px;background:#e7eef7;border-radius:999px;overflow:hidden;margin:18px 0}.mini-progress>span{display:block;height:100%;background:linear-gradient(90deg,var(--accent),var(--mint));border-radius:inherit;transition:width .25s ease}
.reading-stem{font-size:1.05rem;line-height:1.6;background:#f8fafc;border:1px solid #e1e8f1;border-radius:16px;padding:16px;margin:14px 0}.blank{display:inline-block;min-width:92px;border-bottom:2px solid var(--accent);text-align:center;color:var(--accent);font-weight:900}
.builder-zone{display:grid;gap:14px}.word-bank,.sentence-line{min-height:74px;border:1px dashed #b8cbe1;border-radius:18px;padding:12px;display:flex;gap:9px;flex-wrap:wrap;align-content:flex-start}.sentence-line{background:#f7fbff;border-style:solid}.chunk{border:1px solid #cbd9e9;background:#fff;border-radius:12px;padding:9px 11px;font-weight:750;color:var(--ink);box-shadow:0 3px 9px rgba(23,53,93,.05)}.chunk:hover{border-color:#8db4e4}.sentence-preview{font-size:.8rem;color:#6d8095}
.practice-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.practice-panel{border:1px solid var(--line);border-radius:22px;padding:18px;background:#fff}.practice-panel h3{margin:0 0 8px}.practice-panel p{margin:0 0 14px;color:var(--ink-2);line-height:1.55;font-size:.88rem}.record-status{min-height:38px;margin:10px 0;font-size:.8rem;color:var(--ink-2)}.recording{color:var(--bad);font-weight:850}.practice-text{font-size:1rem;line-height:1.75;background:#f8fafc;border:1px solid #e1e8f1;border-radius:16px;padding:16px}
.results-grid{display:grid;grid-template-columns:220px 1fr;gap:24px;align-items:start}.big-score{aspect-ratio:1;border-radius:50%;background:conic-gradient(var(--accent) var(--score-angle),#e6eef7 0);display:grid;place-items:center;position:relative}.big-score:after{content:"";position:absolute;inset:16px;border-radius:50%;background:#fff}.big-score-inner{position:relative;z-index:1;text-align:center}.big-score-inner strong{display:block;font-size:3rem;line-height:.95}.big-score-inner span{font-size:.8rem;color:var(--ink-2);font-weight:800}.breakdown{display:grid;gap:10px}.break-row{display:grid;grid-template-columns:1fr auto;gap:12px;align-items:center;border:1px solid var(--line);border-radius:15px;padding:12px 14px}.break-row strong{font-size:.88rem}.break-row span{font-weight:900}.submit-box{margin-top:22px;border:1px solid #cfe0f6;border-radius:22px;background:#f6faff;padding:18px}.submit-box h3{margin:0 0 6px}.submit-box p{margin:0;color:var(--ink-2);font-size:.86rem;line-height:1.5}.status-line{margin-top:12px;border-radius:14px;padding:11px 12px;font-size:.82rem}.status-line.ok{background:var(--good-soft);color:#145d47}.status-line.err{background:var(--bad-soft);color:#7f3535}.status-line.info{background:#eef5ff;color:#355b88}
.demo-banner{margin-bottom:14px;padding:11px 14px;background:#fff6dc;border:1px solid #eed99b;border-radius:14px;color:#785a13;font-size:.82rem;font-weight:800}.hidden{display:none!important}
.toast{position:fixed;left:50%;bottom:28px;transform:translate(-50%,20px);opacity:0;pointer-events:none;background:#17355d;color:#fff;padding:11px 15px;border-radius:12px;font-size:.82rem;font-weight:800;box-shadow:0 10px 30px rgba(23,53,93,.24);transition:.2s;z-index:100}.toast.show{opacity:1;transform:translate(-50%,0)}
footer{max-width:1380px;margin:0 auto 24px;padding:0 clamp(18px,3vw,34px);display:flex;justify-content:space-between;gap:18px;color:#6f8296;font-size:.72rem}
@media(max-width:980px){.shell{grid-template-columns:1fr}.sidebar{position:relative;top:auto;display:grid;grid-template-columns:auto 1fr;gap:14px;align-items:center}.progress-ring{margin:0}.mission-nav{display:flex;overflow:auto;padding-bottom:4px}.mission-btn{min-width:180px}.side-note{display:none}.hero{grid-template-columns:1fr}.hero-art{min-height:240px}.practice-grid{grid-template-columns:1fr}.results-grid{grid-template-columns:1fr}.big-score{width:220px;margin:auto}}
@media(max-width:700px){.topbar{align-items:flex-start}.brand-title{font-size:1rem;max-width:48vw}.eyebrow{font-size:.68rem}.top-stats{gap:5px}.top-stats>div{min-width:56px;padding:6px 7px}.top-stats label{display:none}.shell{padding:14px}.screen{padding:18px;border-radius:22px;min-height:0}.sidebar{padding:12px;border-radius:20px;grid-template-columns:70px 1fr}.progress-ring{--size:66px}.progress-ring span{font-size:.9rem}.mission-btn{min-width:155px}.mission-copy strong{font-size:.75rem}.mission-copy span{font-size:.62rem}.form-grid{grid-template-columns:1fr}.field.full{grid-column:auto}.screen-head{display:block}.score-pill{display:inline-block;margin-top:10px}.audio-card{align-items:flex-start;flex-wrap:wrap}.audio-copy{min-width:150px}.btn-audio{width:100%}.task-card{padding:15px}.choice{padding:11px}.hero h1{font-size:2.25rem}.hero-art{display:none}.results-grid{display:block}.big-score{margin-bottom:22px}footer{display:block}footer span{display:block;margin-top:5px}}


.mission-head{display:flex;justify-content:space-between;gap:18px;align-items:flex-start;margin-bottom:18px}
.mission-badge{background:#eef4ff;color:#17355d;border:1px solid #c9d7f2;border-radius:999px;padding:10px 14px;font-weight:700;white-space:nowrap}
.teacher-box{display:flex;justify-content:space-between;gap:18px;align-items:flex-start;background:#fffaf1;border:1px solid #f0d9a8;border-radius:18px;padding:16px 18px;margin-bottom:18px}
.teacher-text{margin-top:6px;line-height:1.6}
.stage-grid{display:grid;grid-template-columns:minmax(320px,1fr) minmax(320px,1fr);gap:20px;align-items:start}
.visual img{width:100%;height:auto;border-radius:18px;display:block;border:1px solid #d8e2f0}
.passage-card,.info-card{background:#ffffff;border:1px solid #d8e2f0;border-radius:18px;padding:16px 18px;margin-top:16px;line-height:1.7}
.passage-card strong,.info-card strong{display:block;margin-bottom:8px;color:#17355d}
.question-shell{background:#fff;border:1px solid #d8e2f0;border-radius:22px;padding:20px;box-shadow:0 14px 32px rgba(21,44,89,.08)}
.question-top{display:flex;justify-content:space-between;gap:12px;margin-bottom:10px;color:#5b6b82;font-weight:700}
.bar{width:100%;height:10px;background:#e8eef8;border-radius:999px;overflow:hidden;margin-bottom:18px}.bar span{display:block;height:100%;background:#17355d}
.option-list{display:grid;gap:12px;margin:16px 0}
.option-btn{display:flex;gap:12px;align-items:flex-start;width:100%;text-align:left;border:1px solid #cfd9ea;background:#fff;border-radius:16px;padding:14px 16px;font:inherit;cursor:pointer;transition:.15s ease}
.option-btn:hover{transform:translateY(-1px);border-color:#17355d;background:#f7fbff}.option-btn span{display:inline-flex;min-width:30px;height:30px;border-radius:999px;background:#17355d;color:#fff;align-items:center;justify-content:center;font-weight:700}
.feedback{display:grid;gap:6px;border-radius:16px;padding:14px 16px;margin-top:16px}.feedback.ok{background:#eefaf1;border:1px solid #b8e3c3}.feedback.err{background:#fff1f0;border:1px solid #edc3bf}.feedback.warn{background:#fff9ef;border:1px solid #f1d4a3}
.builder-zone{display:grid;gap:14px;margin:18px 0}.builder-target{min-height:96px;border:2px dashed #b8c7de;background:#f8fbff;border-radius:18px;padding:14px;display:flex;flex-wrap:wrap;gap:10px;align-items:flex-start}.builder-placeholder{color:#6d7a8f}.chip-bank{display:flex;flex-wrap:wrap;gap:10px}.chip{border:none;background:#17355d;color:#fff;padding:10px 14px;border-radius:999px;cursor:pointer;font:inherit}.chip.active{background:#456fa8}
.status-line{padding:12px 14px;border-radius:14px;margin-top:10px}.status-line.ok{background:#eefaf1;border:1px solid #b8e3c3}.status-line.info{background:#eef4ff;border:1px solid #c9d7f2}.status-line.err{background:#fff1f0;border:1px solid #edc3bf}
@media (max-width: 900px){.stage-grid{grid-template-columns:1fr}.teacher-box,.mission-head{flex-direction:column}.mission-badge{white-space:normal}}


/* v1.1 learning-first flow */
.learn-flow{display:grid;gap:18px}
.learn-flow-head{display:flex;align-items:center;justify-content:center;gap:12px;padding:12px 16px;border-radius:16px;background:#eef5ff;border:1px solid #cbdcf4;color:#17355d;font-weight:800;letter-spacing:.01em}
.flow-arrow{color:#6f87a8}
.lesson-grid{display:grid;grid-template-columns:minmax(300px,.9fr) minmax(420px,1.15fr);gap:22px;align-items:start}
.lesson-column{display:grid;gap:14px}
.learn-intro{background:linear-gradient(135deg,#f2f8ff,#f7fbf8);border:1px solid #cfdfef;border-radius:20px;padding:20px}
.learn-intro h2{margin:8px 0 8px;color:#14345d;font-size:1.35rem}.learn-intro p{margin:0;line-height:1.65;color:#42546b}
.learn-pill{display:inline-flex;align-items:center;border-radius:999px;background:#1b6fd8;color:#fff;padding:5px 10px;font-size:.75rem;font-weight:900;letter-spacing:.08em}
.learn-pill.practice{background:#168764}
.lesson-card{display:grid;grid-template-columns:38px 1fr;gap:14px;background:#fff;border:1px solid #d8e2f0;border-radius:18px;padding:16px 18px;box-shadow:0 9px 22px rgba(21,44,89,.05)}
.lesson-card h3{margin:1px 0 6px;color:#17355d;font-size:1.04rem}.lesson-card p{margin:0;line-height:1.65;color:#42546b}
.lesson-step{width:34px;height:34px;border-radius:11px;background:#e7f1ff;color:#165cae;display:flex;align-items:center;justify-content:center;font-weight:900}
.lesson-examples{background:#fbfdff}.lesson-examples ul,.lesson-check ul{margin:8px 0 0;padding-left:20px}.lesson-examples li,.lesson-check li{margin:7px 0;line-height:1.55}
.lesson-check{background:#fff8eb;border:1px solid #f1d49e;border-radius:18px;padding:16px 18px;color:#4c3a19}.lesson-check strong{color:#6d4a08}
.ready-card{background:#eef8f4;border:1px solid #b8dece;border-radius:18px;padding:17px 18px}.ready-card strong{display:block;color:#155c49;font-size:1.02rem}.ready-card p{margin:5px 0 13px;color:#41645a;line-height:1.55}
.practice-toolbar{display:flex;align-items:center;justify-content:space-between;gap:14px;background:#f2f8f6;border:1px solid #c7e4da;border-radius:18px;padding:14px 16px;margin-bottom:18px}.practice-toolbar>div{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.practice-toolbar strong{color:#244e42}
.option-lock{background:#fff8eb;border:1px dashed #d7a84d;border-radius:16px;padding:18px;margin:16px 0;color:#624918;font-weight:700;line-height:1.55}
.feedback .btn{margin-top:8px;justify-self:start}
@media(max-width:980px){.lesson-grid{grid-template-columns:1fr}.learn-flow-head{flex-wrap:wrap}.practice-toolbar{align-items:flex-start;flex-direction:column}}