:root{--bg:#0e0f11;--surface:#17181b;--surface2:#1d1e22;--line:#ffffff1f;--gold:#e2c48e;--text:#f4efe6;--muted:#bdb6aa;--good:#a9d3b0;--warn:#f0b49a;color-scheme:dark}
*{box-sizing:border-box}
/* The hidden attribute always wins over component display rules (.primary, .choices), so hidden buttons are never clickable. */
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:radial-gradient(120% 55% at 50% -12%,#2b2216 0,transparent 62%),var(--bg);color:var(--text);font:400 18px/1.6 Pretendard,system-ui,-apple-system,"Apple SD Gothic Neo","Malgun Gothic",sans-serif;word-break:keep-all;overflow-wrap:anywhere}
.skip{position:absolute;left:-999px;top:0}.skip:focus{left:12px;top:12px;z-index:9;background:var(--gold);color:#111;padding:8px 12px;border-radius:8px}
.sr-only{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
:focus-visible{outline:3px solid var(--gold);outline-offset:3px}
.top{padding:22px 20px 6px;max-width:760px;margin:0 auto}
.brand{margin:0;color:var(--gold);font-size:13px;letter-spacing:.08em}
.top h1{margin:4px 0 8px;font-size:26px;line-height:1.3;letter-spacing:-.02em}
.badge{display:inline-block;margin:0;padding:4px 12px;border:1px solid #e2c48e55;border-radius:999px;color:var(--gold);font-size:13px}
main{max-width:760px;margin:0 auto;padding:6px 16px 56px}
.intro{color:var(--muted);margin:10px 4px 18px}
.lesson-list{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.lesson-open{width:100%;display:grid;grid-template-columns:66px 1fr;column-gap:14px;align-items:center;text-align:left;padding:14px 16px;border:1px solid var(--line);border-radius:18px;background:var(--surface);color:var(--text);font:inherit;cursor:pointer;min-height:88px}
.lesson-open:hover{border-color:#e2c48e66}
.lesson-num{grid-row:1/3;display:grid;place-items:center;width:66px;height:66px;border-radius:16px;background:#e2c48e17;color:var(--gold);font-size:15px;font-weight:700;line-height:1.2}
.lesson-title{font-size:19px;font-weight:700;line-height:1.35}
.lesson-meta{color:var(--muted);font-size:14px}
.lesson-open.locked{opacity:.72}.lesson-open.locked .lesson-num{background:#ffffff0d;color:var(--muted)}
.lock-note{margin:16px 0 0;padding:16px 18px;border:1px solid #e2c48e44;border-radius:18px;background:#e2c48e0d}
.lock-note p{margin:0 0 12px;font-size:17px}
.owner-login{border-top:1px solid var(--line);margin-top:18px;padding-top:8px}.owner-login p{font-size:15px;color:var(--muted)}
.owner-login summary{cursor:pointer;color:var(--muted);font-size:14px;min-height:44px;display:flex;align-items:center}
.owner-login [role=status]{min-height:1.5em}.owner-panel{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:10px 0 18px;padding:9px 14px;border:1px solid #a9d3b055;border-radius:12px;color:var(--good);font-size:14px}.owner-panel[hidden]{display:none}
.link-btn{display:flex;align-items:center;justify-content:center;text-decoration:none;text-align:center}
.app-link{max-width:760px;margin:0 auto;padding:0 20px}.app-link a{display:inline-flex;align-items:center;min-height:44px;color:var(--gold);font-size:15px}
.back{background:none;border:0;color:var(--gold);padding:10px 0;min-height:44px;font:inherit;font-size:16px;cursor:pointer}
.back:before{content:'\2190  '}
.kicker{margin:6px 0 0;color:var(--gold);font-size:14px;font-weight:600}
h2{margin:2px 0 14px;font-size:24px;line-height:1.35;letter-spacing:-.02em}
video{display:block;width:100%;aspect-ratio:4/5;background:#000;border-radius:16px}
.goal{margin:14px 2px}.goal p{margin:0;font-size:18px}
.primary{display:block;width:100%;min-height:58px;padding:14px 18px;border:0;border-radius:16px;background:linear-gradient(180deg,#ecd3a2,#cfae70);color:#1b150c;font:inherit;font-size:19px;font-weight:700;cursor:pointer}
.hint{color:var(--muted);font-size:15px;margin:10px 2px}
.retry-banner{margin:0 0 12px;padding:14px 16px;border:1px solid #a9d3b066;border-radius:16px;background:#a9d3b014}
.retry-banner strong{color:var(--good);font-size:14px}.retry-banner p{margin:4px 0 4px;font-size:19px;font-weight:600}
.text-btn{background:none;border:0;color:var(--gold);padding:8px 0;min-height:44px;font:inherit;font-size:15px;cursor:pointer;text-decoration:underline;text-underline-offset:3px}
.stop-link{display:block;margin-top:10px;color:#ffcdb8}
.teacher{display:grid;grid-template-columns:112px 1fr;gap:14px;align-items:center;padding:16px;border:1px solid #e2c48e33;border-radius:22px;background:radial-gradient(ellipse at 0 50%,#4a372633,transparent 65%),var(--surface)}
.teacher[data-speaking=true]{border-color:#e2c48e99}
.teacher-face{aspect-ratio:1;border-radius:24px;overflow:hidden;background:#fff2e4}
.teacher-face svg{display:block;width:100%;height:100%}
.teacher-name{display:block;text-align:center;margin-top:6px;color:var(--gold);font-size:13px}
.bubble{min-width:0}.bubble .kicker{font-size:12px;margin:0 0 6px}
#coachCaption{margin:0;font-size:19px;line-height:1.6;min-height:3.2em}
.voice-actions{display:flex;gap:16px;flex-wrap:wrap}
.trainer-pick{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:12px 2px;color:var(--muted);font-size:14px}
.trainer-pick button{min-height:44px;padding:6px 16px;border:1px solid var(--line);border-radius:999px;background:var(--surface);color:var(--text);font:inherit;font-size:15px;cursor:pointer}
.trainer-pick button[aria-pressed=true]{border-color:var(--gold);color:var(--gold)}
.panel{margin-top:12px;padding:20px 18px;border:1px solid var(--line);border-radius:22px;background:var(--surface2)}
.panel h3{margin:0 0 14px;font-size:22px;line-height:1.45;letter-spacing:-.02em}
.progress{margin:0 0 6px;color:var(--gold);font-size:14px}
.choices{display:grid;gap:10px;margin-top:14px}
.choice{min-height:56px;padding:12px 16px;border:1px solid #e2c48e55;border-radius:14px;background:#e2c48e12;color:var(--text);font:inherit;font-size:19px;font-weight:600;cursor:pointer;text-align:center}
.choice.soft{border-color:var(--line);background:transparent;color:var(--muted);font-weight:500}
.choice.warn{border-color:#f0b49a77;background:#f0b49a14;color:#ffdccd}
.card{margin:0 0 12px;padding:14px 16px;border-radius:16px;background:#ffffff09;border-left:4px solid var(--gold)}
.card.good{border-color:var(--good)}.card.rest{border-color:var(--warn)}.card.keep{border-color:var(--muted)}
.card strong{display:block;font-size:14px;color:var(--muted);margin-bottom:4px}
.card p{margin:0;font-size:19px;font-weight:600;line-height:1.55}
.fine{color:var(--muted);font-size:14px;margin:10px 0 0}
.q-small{font-size:18px;font-weight:600;margin:16px 0 0}
.own-take{margin-top:18px;border-top:1px solid var(--line);padding-top:6px}
.own-take summary{cursor:pointer;color:var(--gold);font-size:16px;min-height:44px;display:flex;align-items:center}
.file-pick{display:grid;place-items:center;margin-top:10px}
.own-audio{width:100%;margin-top:10px}
.record{margin:6px 0 0;display:grid;grid-template-columns:auto 1fr;gap:6px 14px}.record dt{color:var(--muted);font-size:15px}.record dd{margin:0;font-size:17px;font-weight:600}
.meta{color:var(--muted);font-size:15px;margin:0 0 10px}
.record-open{width:100%;min-height:48px;text-align:left;padding:10px 16px}
.practice-preparation{margin:14px 0;padding:12px 16px;background:var(--surface);border:1px solid var(--line);border-radius:14px;font-size:16px}
.practice-preparation h3{margin:0 0 6px;font-size:17px;color:var(--gold)}
.practice-preparation p{margin:6px 0}
.record-history{list-style:none;padding:0;display:grid;gap:14px}
.record-card{padding:16px;border:1px solid var(--line);border-radius:18px;background:var(--surface)}
.record-card h3{margin:0 0 8px;font-size:19px;color:var(--gold)}
.record-card .record{grid-template-columns:minmax(70px,auto) minmax(0,1fr)}
@media (max-width:380px){.record-card .record{grid-template-columns:1fr;gap:2px}.record-card dd{margin-bottom:10px}}
@media (min-width:640px){.teacher{grid-template-columns:160px 1fr;padding:22px}.top h1{font-size:30px}}