:root{--bg:#fbfaf7;--surface:#fff;--ink:#17314c;--muted:#687684;--line:rgba(23,49,76,.11);--purple:#6650d8;--purple2:#8b75ee;--teal:#16a6a1;--teal2:#0f8985;--soft:#f2efff;--mint:#eef9f7;--warm:#fff7e8;--danger:#b84f5d;--shadow:0 18px 50px rgba(23,49,76,.08)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:linear-gradient(180deg,#fbfaf7 0,#f8f7fb 100%);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Tahoma,Arial,sans-serif}button,input,textarea{font:inherit}button{cursor:pointer}.hidden{display:none!important}.ltr{direction:ltr;text-align:left;unicode-bidi:isolate}.app{width:min(1080px,calc(100% - 28px));margin:auto;padding:20px 0 56px}.topbar{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:20px}.brand{display:flex;align-items:center;gap:10px}.brand-mark{width:40px;height:40px;display:grid;place-items:center;border-radius:13px;color:#fff;background:linear-gradient(145deg,var(--purple),var(--purple2));font-weight:950;box-shadow:0 8px 22px rgba(102,80,216,.25)}.brand strong{display:block;font-size:1.02rem}.brand small{color:var(--muted)}.tiny-pill{padding:7px 10px;border:1px solid var(--line);border-radius:999px;background:rgba(255,255,255,.72);color:var(--muted);font-size:.74rem;font-weight:800}.hero{padding:28px;border:1px solid var(--line);border-radius:30px;background:radial-gradient(circle at 10% 10%,rgba(255,255,255,.94),transparent 33%),linear-gradient(135deg,#eef8f6,#f4efff 56%,#fff7e9);box-shadow:var(--shadow)}.hero-kicker{display:inline-flex;padding:6px 10px;border-radius:999px;color:#117f7b;background:rgba(22,166,161,.11);font-size:.72rem;font-weight:950}.hero h1{margin:10px 0 8px;font-size:clamp(2rem,5.4vw,4.3rem);line-height:1.05;letter-spacing:-.03em}.hero h1 em{font-style:normal;color:var(--purple)}.hero p{max-width:730px;margin:0;color:var(--muted);line-height:1.8}.grid{display:grid;grid-template-columns:1.25fr .75fr;gap:16px;margin-top:16px}.card{padding:20px;border:1px solid var(--line);border-radius:24px;background:rgba(255,255,255,.92);box-shadow:0 13px 34px rgba(23,49,76,.055)}.card h2,.card h3{margin:0 0 7px}.card p{margin:0;color:var(--muted);line-height:1.7}.lesson-card{background:linear-gradient(145deg,#fff,#f4f1ff)}.lesson-top{display:flex;align-items:flex-start;justify-content:space-between;gap:14px}.lesson-icon{width:54px;height:54px;display:grid;place-items:center;border-radius:17px;background:var(--soft);font-size:1.55rem}.ability{margin:16px 0;padding:14px 15px;border-radius:16px;background:var(--mint);color:#176e6a;font-weight:850}.learning-row{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:13px 0}.mini-box{padding:13px;border:1px solid var(--line);border-radius:16px;background:#fff}.mini-box small{display:block;color:var(--muted);font-size:.7rem;font-weight:800;margin-bottom:5px}.mini-box strong{font-size:.88rem}.vocab{display:flex;flex-wrap:wrap;gap:7px;margin-top:8px}.vocab span{padding:6px 9px;border-radius:999px;background:var(--warm);font-size:.74rem;font-weight:800;direction:ltr}.actions{display:flex;flex-wrap:wrap;gap:9px;margin-top:15px}.btn{min-height:46px;padding:10px 15px;border:1px solid var(--line);border-radius:15px;background:#fff;color:var(--ink);font-weight:900}.btn.primary{border:0;color:#fff;background:linear-gradient(135deg,var(--purple),var(--purple2));box-shadow:0 11px 24px rgba(102,80,216,.22)}.btn.teal{border:0;color:#fff;background:linear-gradient(135deg,var(--teal),var(--teal2));box-shadow:0 11px 24px rgba(22,166,161,.2)}.btn.soft{background:var(--soft);border-color:transparent;color:#5741c7}.btn.danger{color:var(--danger)}.btn:disabled{opacity:.5;cursor:not-allowed}.custom-card textarea,.quick-card textarea,.composer textarea{width:100%;resize:vertical;min-height:86px;padding:13px 14px;border:1px solid var(--line);border-radius:15px;background:#fff;color:var(--ink);outline:none}.custom-card textarea:focus,.quick-card textarea:focus,.composer textarea:focus{border-color:rgba(102,80,216,.45);box-shadow:0 0 0 3px rgba(102,80,216,.08)}.quick-card{background:linear-gradient(145deg,#fff,#eef9f7)}.quick-call{display:flex;align-items:center;gap:12px;margin-top:14px;padding:14px;border:1px solid rgba(22,166,161,.2);border-radius:18px;background:rgba(22,166,161,.07)}.quick-call span{font-size:1.5rem}.quick-call strong{display:block}.quick-call small{color:var(--muted)}.quick-result{margin-top:13px;padding:15px;border-radius:17px;background:#17314c;color:#fff}.quick-result strong{display:block;font-size:1.06rem;line-height:1.65;direction:ltr;text-align:left}.quick-result small{display:block;margin-top:5px;color:rgba(255,255,255,.72)}.reinforce{margin-top:16px}.reinforce-list{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:12px}.reinforce-item{padding:13px;border:1px solid var(--line);border-radius:16px;background:#fff}.reinforce-item strong{display:block;direction:ltr;text-align:left;font-size:.86rem}.reinforce-item small{display:block;margin-top:5px;color:var(--muted)}.reinforce-actions{display:flex;gap:6px;margin-top:9px}.icon-btn{width:38px;height:38px;display:grid;place-items:center;border:1px solid var(--line);border-radius:12px;background:#fff}.empty{padding:16px;border:1px dashed var(--line);border-radius:16px;color:var(--muted);text-align:center}.session-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:13px}.session-head h1{margin:4px 0 0;font-size:clamp(1.5rem,4vw,2.5rem)}.session-meta{display:flex;flex-wrap:wrap;gap:7px;margin-top:8px}.session-meta span{padding:6px 9px;border-radius:999px;background:var(--soft);font-size:.72rem;font-weight:850}.activity{margin-bottom:13px;padding:15px;border:1px solid rgba(102,80,216,.14);border-radius:19px;background:linear-gradient(135deg,#f6f3ff,#fff)}.activity-top{display:flex;align-items:center;gap:9px}.activity-icon{font-size:1.45rem}.activity strong{display:block}.activity p{margin:5px 0 0;color:var(--muted);line-height:1.65}.chat{min-height:370px;max-height:58vh;overflow:auto;padding:16px;border:1px solid var(--line);border-radius:22px;background:rgba(255,255,255,.86)}.bubble{width:fit-content;max-width:min(82%,680px);margin:9px 0;padding:12px 14px;border-radius:17px;line-height:1.7}.bubble.teacher{margin-left:auto;background:var(--soft);border-bottom-right-radius:6px}.bubble.user{margin-right:auto;background:var(--mint);border-bottom-left-radius:6px;direction:ltr;text-align:left}.bubble small{display:block;margin-bottom:3px;color:var(--muted);font-size:.66rem;font-weight:850}.composer{margin-top:12px;padding:13px;border:1px solid var(--line);border-radius:20px;background:#fff}.composer textarea{min-height:62px}.composer-row{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-top:8px}.composer-row .actions{margin:0}.listening{color:#117f7b;font-size:.78rem;font-weight:850}.review{padding:22px;border:1px solid var(--line);border-radius:26px;background:#fff;box-shadow:var(--shadow)}.review h1{margin:5px 0}.review-summary{padding:14px;border-radius:17px;background:var(--mint);line-height:1.75}.wins{display:flex;flex-wrap:wrap;gap:7px;margin-top:12px}.wins span{padding:7px 10px;border-radius:999px;background:#eff8ef;color:#426b46;font-size:.75rem;font-weight:800}.review-items{display:grid;gap:10px;margin-top:15px}.review-item{padding:14px;border:1px solid var(--line);border-radius:17px}.review-item-head{display:flex;align-items:center;justify-content:space-between;gap:8px}.type{display:inline-flex;padding:5px 8px;border-radius:999px;font-size:.68rem;font-weight:950}.type.word{background:#fff3db;color:#8a641b}.type.structure{background:#eef1ff;color:#4d58a6}.type.grammar{background:#f7eefe;color:#7444a2}.said,.better{margin-top:8px;padding:9px 10px;border-radius:12px;direction:ltr;text-align:left;font-size:.86rem}.said{background:#fafafa;color:#667}.better{background:var(--mint);color:#176e6a;font-weight:850}.why{margin-top:7px;color:var(--muted);font-size:.78rem}.call-overlay{position:fixed;inset:0;z-index:50;display:grid;place-items:center;padding:20px;background:rgba(10,22,35,.72);backdrop-filter:blur(10px)}.call-card{width:min(470px,100%);padding:28px;border-radius:30px;background:#12283d;color:#fff;text-align:center;box-shadow:0 35px 90px rgba(0,0,0,.34)}.call-orb{width:96px;height:96px;display:grid;place-items:center;margin:8px auto 18px;border-radius:50%;background:linear-gradient(145deg,var(--teal),#42cfc8);font-size:2.5rem;box-shadow:0 0 0 14px rgba(66,207,200,.08),0 18px 48px rgba(0,0,0,.22)}.call-card h2{margin:0 0 6px}.call-card p{margin:0;color:rgba(255,255,255,.72);line-height:1.7}.call-heard{margin:15px 0;padding:12px;border-radius:15px;background:rgba(255,255,255,.08);min-height:48px}.call-answer{margin-top:10px;padding:14px;border-radius:16px;background:#fff;color:#17314c;direction:ltr;text-align:left;font-weight:900;line-height:1.65}.call-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:8px;margin-top:18px}.call-card .btn{border-color:rgba(255,255,255,.16);background:rgba(255,255,255,.08);color:#fff}.call-card .btn.teal{background:linear-gradient(135deg,var(--teal),var(--teal2))}.footer{margin-top:22px;text-align:center;color:var(--muted);font-size:.72rem}.status{padding:10px 12px;border-radius:13px;background:var(--soft);color:#5741c7;font-size:.78rem;font-weight:850;margin-top:10px}
@media(max-width:820px){.grid{grid-template-columns:1fr}.reinforce-list{grid-template-columns:1fr 1fr}.learning-row{grid-template-columns:1fr}.hero{padding:22px}.session-head{align-items:center}.bubble{max-width:90%}}
@media(max-width:560px){.app{width:min(100% - 18px,1080px);padding-top:10px}.topbar{margin-bottom:12px}.tiny-pill{display:none}.hero,.card,.review{border-radius:21px;padding:16px}.hero h1{font-size:2.2rem}.lesson-top{align-items:center}.lesson-icon{width:46px;height:46px}.reinforce-list{grid-template-columns:1fr}.btn{min-height:44px;padding:9px 12px}.chat{min-height:330px;max-height:54vh;padding:11px}.composer-row{align-items:flex-end}.composer-row .actions{justify-content:flex-end}.call-card{padding:22px 17px;border-radius:24px}}