:root{--bg:#080f1d;--panel:#101b2b;--blue:#1769e8;--text:#f2f6fc;--muted:#8d9caf;--line:#20314a}*{box-sizing:border-box}body{margin:0;background:radial-gradient(circle at 70% 5%,#142846 0,#080f1d 42%);color:var(--text);font:15px Inter,system-ui,sans-serif}.app-shell{display:flex;min-height:100vh}.sidebar{width:190px;border-right:1px solid var(--line);background:#050c18bf;padding:28px 14px;display:flex;flex-direction:column}.brand{font-weight:800;letter-spacing:4px;font-size:22px;padding:0 18px 48px;display:flex;gap:10px;align-items:center}.brand-mark{display:grid;place-items:center;width:30px;height:30px;border-radius:8px;background:var(--blue);box-shadow:0 0 20px #1769e866}.nav-item{border:0;color:var(--muted);background:transparent;width:100%;display:flex;gap:16px;align-items:center;text-align:left;padding:14px 18px;border-radius:10px;font-size:15px;cursor:pointer;margin:3px 0}.nav-item span{width:18px;text-align:center;font-size:18px}.nav-item.active,.nav-item:hover{background:linear-gradient(90deg,#1769e8,#155bc5);color:white;box-shadow:0 8px 24px #0c4ca644}.sidebar-bottom{margin-top:auto}.content{flex:1;padding:34px 42px;max-width:1500px;margin:auto;width:100%}.topbar,.section-heading,.top-actions,.user-chip,.hero-controls{display:flex;align-items:center;justify-content:space-between}.eyebrow{font-size:11px;letter-spacing:2px;color:var(--muted);margin:0 0 8px}.blue{color:#579bff}h1,h2,h3,p{margin-top:0}h1{font-size:30px;margin-bottom:0}h2{font-size:28px;margin:0 0 8px}.muted{color:var(--muted)}.top-actions{gap:22px}.icon-button,.date-button{background:transparent;border:0;color:var(--muted);font-size:25px;cursor:pointer}.user-chip{gap:10px;color:var(--muted)}.avatar{background:#253b5d;color:#a9c9f9;border-radius:50%;display:grid;place-items:center;width:32px;height:32px}.hero{margin:34px 0 28px;min-height:180px;padding:30px 34px;border:1px solid #24456f;border-radius:15px;background:linear-gradient(110deg,#132b4b,#0c1728 65%);display:flex;justify-content:space-between;align-items:end;box-shadow:inset 0 1px #ffffff0d}.hero-controls{gap:14px;color:var(--muted)}.play-button{border:0;width:52px;height:52px;border-radius:50%;background:var(--blue);color:#fff;font-size:18px;cursor:pointer;box-shadow:0 8px 25px #1769e866}.workspace{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:26px}.channels-panel,.guide-panel{background:#0d192abd;border:1px solid var(--line);border-radius:13px;padding:22px}.section-heading{margin-bottom:17px}h3{margin:0;font-size:18px}.count,.date-button{font-size:12px;color:var(--muted)}.category-tabs{display:flex;gap:8px;overflow:auto;padding-bottom:16px;border-bottom:1px solid var(--line)}.category{white-space:nowrap;border:1px solid var(--line);background:#0d1829;color:var(--muted);padding:9px 13px;border-radius:8px;cursor:pointer}.category.active,.category:hover{background:#1a65d6;border-color:#3989ff;color:#fff}.channel-row{display:grid;grid-template-columns:48px 1fr auto;align-items:center;gap:14px;padding:13px 10px;border-bottom:1px solid #1c2b40;cursor:pointer;border-radius:8px}.channel-row:hover,.channel-row.selected{background:#18365f}.channel-logo{width:40px;height:40px;border-radius:8px;display:grid;place-items:center;background:#1a3150;color:#8dbdff;font-weight:800}.channel-number{color:#6e8096;font-size:12px}.channel-name{font-weight:600}.star{border:0;background:transparent;color:#71849d;font-size:18px;cursor:pointer}.star.on{color:#4b99ff}.guide-date{font-size:11px;color:#6799dd;letter-spacing:1.5px;margin-bottom:12px}.guide-item{display:grid;grid-template-columns:66px 1fr;gap:10px;padding:16px 0;border-bottom:1px solid var(--line)}.guide-item.current{border-left:3px solid var(--blue);padding-left:12px;background:#142944}.guide-time{font-size:12px;color:#7890ad}.guide-item strong{font-size:13px}.guide-item p{font-size:12px;color:var(--muted);margin:5px 0 0}@media(max-width:900px){.sidebar{width:76px;padding:22px 10px}.brand{padding:0 12px 42px;font-size:0}.brand-mark{font-size:18px}.nav-item{justify-content:center;padding:13px}.nav-item b{display:none}.content{padding:24px 20px}.workspace{grid-template-columns:1fr}.guide-panel{display:none}}@media(max-width:560px){.content{padding:20px 14px}.hero{padding:23px;min-height:150px}.hero-controls span{display:none}.topbar h1{font-size:25px}.channel-row{grid-template-columns:40px 1fr auto}.channel-logo{width:34px;height:34px}}