:root{--brand:#3f51b5;--brand-dark:#303f9f;--brand-soft:#edf0ff;--accent:#ffc34e;--accent-soft:#fff9ed;--danger:#d83f3f;--success:#19a990;--text:#1a1a1a;--text-2:#666;--text-3:#afafaf;--border:#e8e8e8;--bg:#fff;--bg-soft:#f2f3f5;--bg-muted:#f9f9f9;--shadow:0 8px 32px #3f51b51f;--shadow-card:0 4px 20px #0000000f;--radius:16px;--radius-sm:12px;--radius-xs:8px;--nav-h:72px;--safe-top:env(safe-area-inset-top,0px);--safe-bottom:env(safe-area-inset-bottom,0px);--phone-w:390px;--phone-h:844px;--font:"DM Sans", system-ui, -apple-system, sans-serif;--lightningcss-light:initial;--lightningcss-dark: 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0;font-size:13px;display:flex}.or-line:before,.or-line:after{content:"";background:var(--border);flex:1;height:1px}.or-line span{white-space:nowrap}.back-btn{background:var(--bg-soft);width:40px;height:40px;color:var(--text);border-radius:12px;place-items:center;display:grid}.linkish{color:var(--brand);font-size:14px;font-weight:700}.social-row{grid-template-columns:1fr 1fr;gap:12px;display:grid}.social-btn{border:1.5px solid var(--border);background:#fff;border-radius:14px;justify-content:center;align-items:center;gap:8px;height:48px;font-size:13px;font-weight:600;display:flex}.spinner{border:2.5px solid #ffffff59;border-top-color:#fff;border-radius:50%;width:20px;height:20px;animation:.7s linear infinite spin;display:inline-block}@keyframes spin{to{transform:rotate(360deg)}}.success-screen{flex-direction:column;justify-content:center;align-items:center;height:100%;padding:32px 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16px;font-size:14px;display:flex;position:relative}.icon-btn{background:var(--bg-soft);width:40px;height:40px;color:var(--text);border-radius:12px;flex-shrink:0;place-items:center;display:grid}.icon-btn.light{color:#fff;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#ffffff2e}.icon-btn.soft{background:var(--bg-soft);color:var(--text)}.course-detail{background:var(--bg-soft)}.course-hero{height:280px;position:relative;overflow:hidden}.course-hero__art{place-items:center;height:140px;display:grid}.play-btn{width:64px;height:64px;color:var(--brand);background:#fffffff2;border-radius:50%;place-items:center;padding-left:4px;display:grid;box-shadow:0 12px 30px #0003}.course-sheet{z-index:2;background:#fff;border-radius:28px 28px 0 0;min-height:calc(100% - 252px);margin-top:-28px;padding-top:24px;position:relative}.meta-pill{background:var(--bg-soft);height:28px;color:var(--text-2);border-radius:99px;align-items:center;gap:4px;padding:0 10px;font-size:12px;font-weight:600;display:inline-flex}.segment{background:var(--bg-soft);border-radius:12px;grid-template-columns:1fr 1fr;margin-bottom:20px;padding:4px;display:grid;position:relative}.segment button{height:40px;color:var(--text-2);z-index:1;border-radius:10px;font-size:13px;font-weight:600;position:relative}.segment button.active{color:var(--brand)}.seg-bg{z-index:-1;background:#fff;border-radius:10px;position:absolute;inset:0;box-shadow:0 2px 8px #0000000f}.check-list{gap:10px;list-style:none;display:grid}.check-list li{gap:10px;font-size:14px;line-height:1.4;display:flex}.check-list span{background:var(--brand-soft);width:22px;height:22px;color:var(--brand);border-radius:50%;flex-shrink:0;place-items:center;font-size:11px;font-weight:700;display:grid}.bullet-list{color:var(--text-2);gap:8px;padding-left:18px;font-size:14px;display:grid}.rating-block{background:var(--accent-soft);border-radius:16px;align-items:center;gap:16px;margin-bottom:16px;padding:16px;display:flex}.rating-big{color:var(--text);font-size:40px;font-weight:800;line-height:1}.stars-row{gap:2px;margin-bottom:4px;display:flex}.review-card{border-bottom:1px solid var(--border);padding:14px 0}.avatar-sm{object-fit:cover;border-radius:50%;width:36px;height:36px}.lesson-row{border-bottom:1px solid var(--border);align-items:center;gap:12px;padding:14px 0;display:flex}.lesson-num{background:var(--brand-soft);width:36px;height:36px;color:var(--brand);border-radius:12px;place-items:center;font-size:12px;font-weight:700;display:grid}.buy-bar{padding:12px 20px calc(16px + var(--safe-bottom));-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-top:1px solid var(--border);z-index:25;background:#fffffff0;justify-content:space-between;align-items:center;gap:16px;display:flex;position:absolute;bottom:0;left:0;right:0}.sheet-overlay{z-index:30;background:#0006;position:absolute;inset:0}.action-sheet{z-index:31;background:#fff;border-radius:20px;padding:12px 16px 20px;position:absolute;bottom:8px;left:8px;right:8px;box-shadow:0 20px 40px #0003}.sheet-handle{background:#ddd;border-radius:99px;width:40px;height:4px;margin:4px auto 16px}.sheet-option{text-align:left;border-radius:12px;width:100%;padding:14px 12px;font-size:15px;font-weight:600}.sheet-option.active{background:var(--brand-soft);color:var(--brand)}.search-field{background:var(--bg-soft);height:48px;color:var(--text-3);border-radius:14px;align-items:center;gap:8px;padding:0 12px;display:flex}.search-field input{min-width:0;height:100%;color:var(--text);background:0 0;flex:1}.cat-list{gap:4px;display:grid}.cat-row{border-bottom:1px solid var(--border);align-items:center;gap:12px;padding:14px 4px;display:flex}.cat-dot{border-radius:50%;width:12px;height:12px}.suggest-row{border-bottom:1px solid var(--border);align-items:center;gap:12px;width:100%;padding:10px 0;display:flex}.suggest-thumb{border-radius:12px;flex-shrink:0;width:52px;height:52px}.msg-row{border-bottom:1px solid var(--border);align-items:center;gap:12px;width:100%;padding:12px 0;display:flex}.avatar{object-fit:cover;border-radius:50%;width:52px;height:52px}.avatar-wrap{position:relative}.online-dot{background:#22c55e;border:2px solid #fff;border-radius:50%;width:12px;height:12px;position:absolute;bottom:2px;right:2px}.chat-screen{flex-direction:column;display:flex}.chat-body{flex-direction:column;flex:1;gap:10px;padding-top:16px;padding-bottom:16px;display:flex;overflow-y:auto}.bubble{border-radius:18px;max-width:78%;padding:12px 14px;font-size:14px;line-height:1.4;position:relative}.bubble span{opacity:.6;margin-top:6px;font-size:10px;display:block}.bubble.them{background:var(--bg-soft);border-bottom-left-radius:6px;align-self:flex-start}.bubble.me{background:var(--brand);color:#fff;border-bottom-right-radius:6px;align-self:flex-end}.chat-input{padding:10px 16px calc(16px + var(--safe-bottom));border-top:1px solid var(--border);background:#fff;align-items:center;gap:10px;display:flex}.chat-input input{background:var(--bg-soft);border-radius:99px;flex:1;height:44px;padding:0 16px}.profile-card{text-align:center;box-shadow:var(--shadow-card);background:linear-gradient(160deg,#edf0ff,#fff);border-radius:24px;padding:24px 20px}.profile-avatar-ring{background:linear-gradient(135deg, var(--brand), var(--accent));border-radius:50%;width:88px;height:88px;margin:0 auto;padding:3px}.profile-avatar{object-fit:cover;border:3px solid #fff;border-radius:50%;width:100%;height:100%}.vip-badge{background:var(--accent);color:#1a1a1a;letter-spacing:.06em;border-radius:99px;margin-top:8px;padding:4px 10px;font-size:11px;font-weight:800;display:inline-block}.stats-row{justify-content:center;align-items:center;gap:24px;margin-top:20px;display:flex}.stats-row strong{font-size:14px;display:block}.stats-row span{color:var(--text-2);font-size:12px}.stats-div{background:var(--border);width:1px;height:32px}.menu-card{box-shadow:var(--shadow-card);background:#fff;border-radius:16px;overflow:hidden}.menu-row{border-bottom:1px solid var(--border);text-align:left;justify-content:space-between;align-items:center;width:100%;padding:16px;font-size:15px;font-weight:600;display:flex}.menu-row:last-child{border-bottom:none}.menu-row.danger{color:var(--danger);justify-content:center}.ach-grid{grid-template-columns:1fr 1fr;gap:12px;display:grid}.ach-card{text-align:center;border-radius:18px;padding:18px 14px}.ach-icon{margin-bottom:8px;font-size:32px}.ach-card strong{margin-bottom:4px;font-size:14px;display:block}.points-ring-wrap{place-items:center;width:140px;height:140px;margin:36px auto 24px;display:grid;position:relative}.points-ring{border:8px solid #0000;border-top-color:var(--brand);border-right-color:var(--accent);border-bottom-color:#a771ff;border-radius:50%;position:absolute;inset:0}.points-center{text-align:center}.points-center strong{font-size:28px;display:block}.points-center span{color:var(--text-2);font-size:12px}