:root{--navy:#082f52;--navy2:#12466f;--red:#b31f35;--red2:#8f1228;--gold:#d5a52d;--gold2:#f1cf74;--ink:#1d3448;--muted:#71808e;--line:#e7e2dd;--cream:#fffaf0;--paper:#fffdf9;--green:#18764b;--shadow:0 18px 45px rgba(8,47,82,.10)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:linear-gradient(180deg,#fffdf9 0,#f5f8fb 48%,#f7f9fb 100%);color:var(--ink);font-family:Inter,Arial,Helvetica,sans-serif}.shell{width:min(980px,calc(100% - 26px));margin:auto}button,input{font:inherit}button{touch-action:manipulation}
.top{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.94);backdrop-filter:blur(14px);border-bottom:1px solid #ece8e4}.topin{min-height:82px;display:flex;align-items:center;gap:14px}.brand{display:flex;align-items:center;text-decoration:none}.brand img{display:block;width:168px;max-width:42vw;height:64px;object-fit:contain;object-position:left center}.langs{margin-left:auto;display:flex;gap:6px;padding:5px;border:1px solid #e5e5e5;border-radius:999px;background:#fff;box-shadow:0 6px 18px rgba(8,47,82,.06)}.langs button{min-width:48px;height:44px;border:0;border-radius:999px;background:transparent;color:var(--navy);font-weight:950;cursor:pointer}.langs button.active{background:linear-gradient(180deg,var(--navy2),var(--navy));color:#fff;box-shadow:0 6px 0 #041d33,0 10px 18px rgba(8,47,82,.18);transform:translateY(-2px)}
.hero{position:relative;overflow:hidden;border-bottom:1px solid #eee7df;background:radial-gradient(circle at 92% 10%,rgba(213,165,45,.20),transparent 24%),radial-gradient(circle at 5% 95%,rgba(179,31,53,.08),transparent 30%),linear-gradient(135deg,#fff 0%,#fff9ef 100%)}.hero:after{content:"♪";position:absolute;right:-10px;bottom:-56px;color:rgba(8,47,82,.045);font:900 260px/1 Georgia,serif;transform:rotate(-10deg);pointer-events:none}.hero-in{position:relative;z-index:1;padding:42px 0 36px;display:grid;grid-template-columns:minmax(0,1fr) 220px;gap:28px;align-items:center}.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--red);font-size:12px;font-weight:950;letter-spacing:.13em;text-transform:uppercase}.eyebrow:before{content:"✦";color:var(--gold)}.hero h1{margin:10px 0 10px;color:var(--navy);font:900 clamp(38px,6vw,66px)/.98 Georgia,"Times New Roman",serif;letter-spacing:-.02em}.hero p{max-width:700px;margin:0;color:var(--muted);font-size:16px;line-height:1.65}.meta{margin-top:18px;display:flex;gap:9px;flex-wrap:wrap}.pill{display:inline-flex;align-items:center;gap:7px;padding:9px 13px;border-radius:999px;background:#fff;border:1px solid #ead8a6;color:#75561a;font-size:12px;font-weight:950;box-shadow:0 7px 18px rgba(111,81,18,.06)}.hero-badge{position:relative;display:grid;place-items:center;aspect-ratio:1;border-radius:50%;background:linear-gradient(145deg,#fff,#fff7e4);border:1px solid #ead9aa;box-shadow:0 24px 50px rgba(8,47,82,.12),inset 0 0 0 8px rgba(255,255,255,.65)}.hero-badge:before{content:"♫";font-size:74px;filter:drop-shadow(0 8px 10px rgba(8,47,82,.12))}.hero-badge strong{position:absolute;bottom:34px;padding:6px 10px;border-radius:999px;background:var(--navy);color:#fff;font-size:10px;letter-spacing:.08em;text-transform:uppercase}
main{padding:22px 0 54px}.back{display:inline-flex;margin:2px 0 18px;color:var(--navy);text-decoration:none;font-weight:950;font-size:13px}.resource-launchers{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:18px}.big-3d{position:relative;min-height:92px;padding:16px 18px 18px;border:1px solid transparent;border-radius:22px;background:linear-gradient(180deg,#144c78 0%,#082f52 100%);color:#fff;text-align:left;cursor:pointer;box-shadow:0 10px 0 #041f37,0 17px 28px rgba(8,47,82,.18);transition:.16s ease}.big-3d.red{background:linear-gradient(180deg,#c42c43 0%,#9a172d 100%);box-shadow:0 10px 0 #6f0e20,0 17px 28px rgba(179,31,53,.16)}.big-3d:hover{transform:translateY(-2px)}.big-3d:active,.big-3d[aria-expanded="true"]{transform:translateY(6px);box-shadow:0 4px 0 #041f37,0 9px 16px rgba(8,47,82,.15)}.big-3d.red:active,.big-3d.red[aria-expanded="true"]{box-shadow:0 4px 0 #6f0e20,0 9px 16px rgba(179,31,53,.15)}.big-3d .icon{font-size:28px}.big-3d b{display:block;margin-top:5px;font:900 23px Georgia,serif}.big-3d small{display:block;margin-top:4px;color:rgba(255,255,255,.78);font-size:12px;line-height:1.35}.big-3d .chev{position:absolute;right:17px;top:50%;transform:translateY(-50%);font-size:24px;transition:.2s}.big-3d[aria-expanded="true"] .chev{transform:translateY(-50%) rotate(180deg)}
.drawer{display:grid;grid-template-rows:0fr;opacity:0;transition:grid-template-rows .28s ease,opacity .2s ease;margin-bottom:0}.drawer.open{grid-template-rows:1fr;opacity:1;margin-bottom:18px}.drawer-inner{overflow:hidden}.drawer-card{background:#fff;border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow);overflow:hidden}.drawer-head{padding:18px 20px;border-bottom:1px solid #edf0f2;background:linear-gradient(135deg,#fff,#fffdf7)}.drawer-head h2{margin:0;color:var(--navy);font:900 26px Georgia,serif}.drawer-head p{margin:6px 0 0;color:var(--muted);font-size:13px;line-height:1.5}.drawer-body{padding:20px}.music-box{background:linear-gradient(145deg,#fffaf0,#fff);border:1px solid #ecd79e;border-radius:18px;padding:18px}.music-title{font:900 24px Georgia,serif;color:var(--navy)}.music-status{margin-top:7px;color:#785f2b;font-size:13px;line-height:1.55}.player{width:100%;margin-top:14px}.actions{display:flex;gap:9px;flex-wrap:wrap;margin-top:12px}.mini-3d{display:inline-flex;align-items:center;justify-content:center;text-decoration:none;min-height:42px;padding:0 15px;border:0;border-radius:12px;background:linear-gradient(180deg,var(--navy2),var(--navy));color:#fff;font-size:12px;font-weight:950;cursor:pointer;box-shadow:0 5px 0 #041e35,0 8px 14px rgba(8,47,82,.14)}.mini-3d.alt{background:linear-gradient(180deg,#fff,#f3f5f7);color:var(--navy);border:1px solid #d8e0e6;box-shadow:0 5px 0 #cfd7dd,0 8px 14px rgba(8,47,82,.07)}.mini-3d.gold{background:linear-gradient(180deg,#f4cf65,#ce9820);color:#3b2c08;box-shadow:0 5px 0 #a7770e,0 8px 14px rgba(201,148,34,.16)}.mini-3d:active{transform:translateY(4px);box-shadow:0 1px 0 #041e35}.lyrics{white-space:pre-wrap;margin:0;font:15px/1.75 Arial,sans-serif;color:#30475a}.loading{padding:28px;text-align:center;color:var(--muted)}.error{padding:14px;border-radius:13px;background:#fff1f3;color:#9d2338;border:1px solid #f0c8cf}.empty{padding:16px;border-radius:14px;background:#f5f7f9;color:#71808e;border:1px dashed #d8e0e6;font-size:13px;line-height:1.5}
.studio{margin-top:26px}.studio-top{position:relative;overflow:hidden;padding:24px;border-radius:26px;background:linear-gradient(135deg,#082f52,#144c78 58%,#9d1830 145%);color:#fff;box-shadow:0 20px 45px rgba(8,47,82,.18)}.studio-top:after{content:"♪ ♫";position:absolute;right:18px;top:7px;color:rgba(255,255,255,.06);font:900 74px Georgia,serif;transform:rotate(-8deg)}.studio-kicker{position:relative;z-index:1;color:#f4d784;font-size:11px;font-weight:950;letter-spacing:.13em;text-transform:uppercase}.studio-top h2{position:relative;z-index:1;margin:7px 0 6px;font:900 clamp(29px,5vw,42px) Georgia,serif}.studio-top p{position:relative;z-index:1;margin:0;max-width:690px;color:#dfe9f2;line-height:1.55}.progress-row{position:relative;z-index:1;display:flex;align-items:center;gap:12px;margin-top:18px}.progress-track{flex:1;height:10px;border-radius:999px;background:rgba(255,255,255,.17);overflow:hidden}.progress-fill{height:100%;width:0;background:linear-gradient(90deg,#f2c657,#fff1a6);border-radius:inherit;transition:width .3s}.progress-count{min-width:70px;text-align:right;font-size:12px;font-weight:950;color:#fff3bd}.lesson-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:15px}.lesson-card{position:relative;min-height:178px;padding:18px;border:1px solid #e1e6ea;border-radius:22px;background:#fff;box-shadow:0 12px 28px rgba(8,47,82,.07);transition:.18s}.lesson-card:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(8,47,82,.10)}.lesson-num{display:grid;place-items:center;width:36px;height:36px;border-radius:12px;background:#edf4fa;color:var(--navy);font-weight:950}.lesson-card.done .lesson-num{background:#e9f8ef;color:var(--green)}.lesson-card h3{margin:13px 0 6px;color:var(--navy);font:900 21px Georgia,serif}.lesson-card p{margin:0;color:var(--muted);font-size:12.5px;line-height:1.55}.lesson-open{position:absolute;left:18px;right:18px;bottom:16px;min-height:38px;border:0;border-radius:11px;background:linear-gradient(180deg,#fff,#f4f6f8);color:var(--navy);font-weight:950;cursor:pointer;box-shadow:0 4px 0 #d7dee4}.lesson-card.done .lesson-open:before{content:"✓ ";color:var(--green)}
.practice-panel{display:none;margin-top:14px;padding:20px;border:1px solid #e3e7ea;border-radius:22px;background:#fff;box-shadow:0 12px 30px rgba(8,47,82,.06)}.practice-panel.open{display:block}.practice-head{display:flex;align-items:center;justify-content:space-between;gap:12px}.practice-head h3{margin:0;color:var(--navy);font:900 24px Georgia,serif}.close-panel{width:38px;height:38px;border:1px solid #dde3e8;border-radius:50%;background:#fff;color:var(--navy);font-size:20px;cursor:pointer}.speed-row{display:flex;gap:9px;flex-wrap:wrap;margin-top:14px}.speed-btn{min-width:74px;min-height:42px;border:1px solid #dbe2e7;border-radius:13px;background:#fff;color:var(--navy);font-weight:950;cursor:pointer;box-shadow:0 4px 0 #d2dae0}.speed-btn.active{background:var(--navy);color:#fff;box-shadow:0 4px 0 #041e35}.section-tabs{display:flex;gap:8px;overflow:auto;padding:4px 0 8px;margin-top:12px;scrollbar-width:none}.section-tabs::-webkit-scrollbar{display:none}.section-tabs button{flex:0 0 auto;min-height:38px;padding:0 13px;border:1px solid #dfe4e8;border-radius:999px;background:#fff;color:var(--navy);font-weight:900;cursor:pointer}.section-tabs button.active{background:var(--red);color:#fff;border-color:var(--red)}.section-view{margin-top:8px;padding:18px;border-radius:18px;background:linear-gradient(135deg,#fffaf0,#fff);border:1px solid #ecdba9;white-space:pre-wrap;font:15px/1.7 Arial,sans-serif;color:#33495c}.ab-box{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:14px}.ab-point{padding:14px;border:1px solid #e2e7eb;border-radius:15px;background:#f8fafb}.ab-point small{display:block;color:var(--muted);font-size:10px;font-weight:950;text-transform:uppercase}.ab-point strong{display:block;margin-top:5px;color:var(--navy);font-size:20px}.loop-status{margin-top:10px;color:#667888;font-size:12px}.karaoke-stage{margin-top:14px;min-height:230px;display:grid;place-items:center;text-align:center;padding:28px 20px;border-radius:24px;background:radial-gradient(circle at 50% 0,rgba(242,207,116,.12),transparent 35%),linear-gradient(160deg,#061f36,#0b3c64);color:#fff;box-shadow:inset 0 0 0 1px rgba(255,255,255,.06)}.karaoke-line{max-width:760px;font:900 clamp(27px,6vw,46px)/1.15 Georgia,serif;text-wrap:balance}.karaoke-counter{margin-top:13px;color:#d6e1eb;font-size:11px;font-weight:900}.karaoke-controls{display:flex;justify-content:center;gap:9px;flex-wrap:wrap;margin-top:12px}.memory-text{margin-top:14px;padding:18px;border-radius:18px;background:#fffaf0;border:1px solid #ecd79e;font:16px/1.8 Georgia,serif;color:#2d4254}.memory-text .hidden-word{display:inline-block;min-width:42px;margin:0 2px;border-bottom:2px solid #c89b2b;color:transparent;user-select:none}.record-box{margin-top:14px;padding:18px;border:1px solid #e1e6ea;border-radius:18px;background:#f8fafb}.record-indicator{display:inline-flex;align-items:center;gap:7px;color:#7b8792;font-size:12px;font-weight:900}.record-indicator.live{color:var(--red)}.record-indicator.live:before{content:"";width:9px;height:9px;border-radius:50%;background:var(--red);box-shadow:0 0 0 5px rgba(179,31,53,.10);animation:pulse 1s infinite}@keyframes pulse{50%{transform:scale(1.2)}}.record-preview{width:100%;margin-top:12px}.tip{margin-top:12px;padding:12px 14px;border-left:4px solid var(--gold);border-radius:0 12px 12px 0;background:#fffaf0;color:#725a27;font-size:12px;line-height:1.5}.locked{opacity:.55}.locked .lesson-open{pointer-events:none}.footer{text-align:center;color:#8a969f;font-size:11px;padding:0 0 30px}
@media(max-width:760px){.hero-in{grid-template-columns:1fr}.hero-badge{display:none}.lesson-grid{grid-template-columns:1fr 1fr}.resource-launchers{grid-template-columns:1fr}.brand img{width:145px}.langs button{min-width:44px;height:42px}.studio-top{padding:20px}.practice-panel{padding:16px}}
@media(max-width:520px){.shell{width:min(100% - 20px,980px)}.topin{min-height:72px}.brand img{width:126px;max-width:44vw;height:54px}.langs{gap:3px;padding:4px}.langs button{min-width:39px;height:39px;padding:0 8px;font-size:12px}.hero-in{padding:28px 0 25px}.hero h1{font-size:40px}.hero p{font-size:14px}.meta{gap:7px}.pill{font-size:10.5px}.resource-launchers{gap:12px}.big-3d{min-height:86px}.big-3d b{font-size:21px}.drawer-head,.drawer-body{padding:16px}.lesson-grid{grid-template-columns:1fr}.lesson-card{min-height:160px}.practice-head{align-items:flex-start}.actions{display:grid}.mini-3d{width:100%}.ab-box{grid-template-columns:1fr 1fr}.karaoke-stage{min-height:205px;padding:20px 14px}.karaoke-controls{display:grid;grid-template-columns:1fr 1fr}.karaoke-controls .mini-3d{width:100%}}