:root{--bg:#f5f2ea;--panel:#fff;--ink:#2b3a33;--muted:#7a8a80;--accent:#3d6b58;--accent-soft:#dbe8e1;--gold:#c9a227;--figure:#3d6b58;--figure-dim:#b9cdc3;--radius:14px}*{box-sizing:border-box}body{background:var(--bg);color:var(--ink);margin:0;font-family:Segoe UI,system-ui,-apple-system,sans-serif;line-height:1.55}.app{max-width:1000px;margin:0 auto;padding:0 20px 40px}nav{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin-bottom:12px;padding:18px 0;display:flex}.logo{letter-spacing:.3px;color:var(--ink);font-size:1.15rem;font-weight:700;text-decoration:none}.brand-lockup{align-items:center;gap:8px;display:inline-flex}.logo-mark{flex:none;display:block}.nav-links{flex-wrap:wrap;align-items:center;gap:2px;display:flex}nav .nav-links a{color:var(--muted);border-radius:8px;padding:8px 14px;font-size:1rem;text-decoration:none}nav .nav-links a.active{color:var(--accent);background:var(--accent-soft);font-weight:600}nav button{color:var(--muted);cursor:pointer;background:0 0;border:none;border-radius:8px;padding:8px 14px;font-size:1rem}nav button.active{color:var(--accent);background:var(--accent-soft);font-weight:600}.btn-link{font:inherit;background:var(--accent);color:#fff;border-radius:10px;padding:9px 18px;text-decoration:none;display:inline-block}.btn-link.big{padding:14px 28px;font-size:1.1rem}.ghost-link{font:inherit;color:var(--accent);border-radius:10px;padding:9px 6px;text-decoration:none;display:inline-block}.ghost-link.big{font-size:1.05rem}h1{margin:6px 0 4px;font-size:1.7rem;font-weight:650}.muted{color:var(--muted)}.small{font-size:.85rem}.phase-chip{background:var(--accent-soft);color:var(--accent);border-radius:999px;margin:0;padding:3px 12px;font-size:.8rem;font-weight:600;display:inline-block}button{font:inherit;cursor:pointer;border:1px solid var(--accent);background:var(--panel);color:var(--accent);border-radius:10px;padding:9px 18px}button.primary{background:var(--accent);color:#fff;border:none}button.big{margin-top:18px;padding:14px 28px;font-size:1.1rem}button.ghost{color:var(--muted);background:0 0;border:none}.banner{background:var(--panel);border-left:4px solid var(--gold);border-radius:var(--radius);justify-content:space-between;align-items:center;gap:10px;margin-bottom:14px;padding:12px 16px;display:flex}.banner.success{border-left-color:var(--accent)}.segment-list{margin:22px 0 0;padding:0;list-style:none}.segment-list li{background:var(--panel);border-radius:var(--radius);align-items:flex-start;gap:16px;margin-bottom:10px;padding:14px 18px;display:flex}.segment-list strong{display:block}.segment-list p{margin:2px 0 0}.seg-min{background:var(--accent);color:#fff;text-align:center;border-radius:10px;min-width:44px;padding:6px 0;font-weight:700}.player-head{align-items:center;gap:14px;padding:8px 0;display:flex}.player-title{flex-direction:column;flex:1;display:flex}.player-title span{color:var(--muted);font-size:.8rem}.clock{font-variant-numeric:tabular-nums;color:var(--accent);font-size:1.9rem;font-weight:700}.progress-bar{background:var(--accent-soft);border-radius:3px;height:6px;margin-bottom:16px;overflow:hidden}.progress-bar div{background:var(--accent);height:100%;transition:width 1s linear}.player-body{grid-template-columns:1fr 320px;gap:18px;display:grid}@media (width<=820px){.player-body{grid-template-columns:1fr}}.video-wrap iframe{aspect-ratio:16/9;border-radius:var(--radius);background:#000;border:none;width:100%}.video-credit{color:var(--muted);margin:6px 2px;font-size:.78rem}.no-video{background:var(--panel);border-radius:var(--radius);justify-content:center;padding:30px;display:flex}.seg-panel{flex-direction:column;align-items:flex-start;gap:12px;display:flex}.instructions{background:var(--panel);border-radius:var(--radius);width:100%;margin:0;padding:14px 14px 14px 30px}.instructions li{margin-bottom:6px}.player-controls{flex-wrap:wrap;gap:8px;display:flex}.move-guide{background:var(--panel);border-radius:var(--radius);margin:0;padding:10px}.move-guide figcaption{text-align:center;margin-top:4px;font-size:.85rem}.move-guide-note{color:var(--muted);font-size:.7rem!important}.stat-grid{grid-template-columns:repeat(4,1fr);gap:12px;margin:18px 0;display:grid}@media (width<=640px){.stat-grid{grid-template-columns:repeat(2,1fr)}}.stat{background:var(--panel);border-radius:var(--radius);flex-direction:column;align-items:center;padding:16px;display:flex}.stat strong{color:var(--accent);font-size:1.8rem}.stat span{color:var(--muted);font-size:.8rem}.preview-form{align-items:center;gap:10px;margin:18px 0 10px;display:flex}.preview-form input{width:90px;font:inherit;border:1px solid #ccc;border-radius:8px;padding:8px}.preview-card{background:var(--panel);border-radius:var(--radius);padding:16px}.preview-card ul{margin:8px 0 0;padding-left:20px}.moves-layout{grid-template-columns:300px 1fr;gap:18px;margin-top:14px;display:grid}@media (width<=720px){.moves-layout{grid-template-columns:1fr}}.moves-list{max-height:480px;margin:0;padding:0;list-style:none;overflow-y:auto}.moves-list button{text-align:left;width:100%;color:var(--ink);background:0 0;border:none;border-radius:8px;padding:8px 12px}.moves-list button.active{background:var(--accent-soft);color:var(--accent);font-weight:600}.move-detail{flex-direction:column;align-items:stretch;gap:14px;width:100%;display:flex}.move-head{flex-wrap:wrap;align-items:baseline;gap:10px;display:flex}.move-head h2{margin:0;font-size:1.25rem;font-weight:650}.move-detail .video-wrap{width:100%}.move-aids{grid-template-columns:200px 1fr;align-items:start;gap:16px;display:grid}@media (width<=560px){.move-aids{grid-template-columns:1fr;justify-items:center}}footer{text-align:center;margin-top:40px}.landing{max-width:1040px;margin:0 auto;padding:0 20px 60px}.landing-nav{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;padding:18px 0;display:flex}.landing-nav .nav-links{gap:10px}.hero{grid-template-columns:1.15fr .85fr;align-items:center;gap:32px;padding:30px 0 20px;display:grid}@media (width<=820px){.hero{grid-template-columns:1fr}.hero-art{order:-1;justify-content:center;display:flex}}.hero h1{margin:12px 0;font-size:2.4rem;font-weight:680;line-height:1.15}@media (width<=820px){.hero h1{font-size:1.9rem}}.lede{color:var(--ink);max-width:42ch;font-size:1.12rem}.hero-cta{flex-wrap:wrap;align-items:center;gap:14px;margin:22px 0 10px;display:flex}.hero-art{justify-content:center;display:flex}.features{grid-template-columns:repeat(4,1fr);gap:16px;margin:34px 0;display:grid}@media (width<=900px){.features{grid-template-columns:repeat(2,1fr)}}@media (width<=520px){.features{grid-template-columns:1fr}}.feature-card{background:var(--panel);border-radius:var(--radius);padding:20px}.feature-icon{margin-bottom:6px;font-size:1.7rem;display:block}.feature-card h3{margin:4px 0 6px;font-size:1.05rem}.path{margin:44px 0}.path h2,.closing-cta h2{margin:0 0 6px;font-size:1.5rem;font-weight:650}.phase-track{gap:12px;margin:18px 0 0;padding:0;list-style:none;display:grid}.phase-track li{background:var(--panel);border-radius:var(--radius);align-items:flex-start;gap:16px;padding:16px 18px;display:flex}.phase-track p{margin:4px 0 0}.phase-num{background:var(--accent);color:#fff;border-radius:50%;flex:none;justify-content:center;align-items:center;width:34px;height:34px;font-weight:700;display:flex}.closing-cta{text-align:center;background:var(--accent-soft);border-radius:var(--radius);margin:40px 0 24px;padding:42px 20px}.closing-cta p{margin:0 0 18px}.landing-foot{text-align:center}.center-load{text-align:center;margin-top:20vh}.auth-wrap{justify-content:center;align-items:center;min-height:100vh;padding:20px;display:flex}.auth-card{background:var(--panel);border-radius:var(--radius);width:100%;max-width:400px;padding:34px 36px;box-shadow:0 8px 30px #2b3a3314}.auth-card h1{margin:0 0 6px;font-size:1.5rem}.auth-card form{flex-direction:column;gap:14px;margin:20px 0 8px;display:flex}.auth-card label{flex-direction:column;gap:5px;font-size:.9rem;font-weight:600;display:flex}.auth-card input{font:inherit;background:var(--bg);border:1px solid #d5ddd8;border-radius:10px;padding:10px 12px;font-weight:400}.auth-card input:focus{outline:2px solid var(--accent-soft);border-color:var(--accent)}.auth-error{color:#b3423a;margin:0;font-size:.88rem}button.link{color:var(--accent);padding:0;text-decoration:underline}.nav-user{color:var(--muted);margin-left:14px;font-size:.9rem}