:root{
  --purple-900:#74076B;--purple-800:#8F0A83;--purple-700:#B20FA3;--purple-600:#D417C2;--purple-100:#F4E5F2;--purple-050:#FCF7FB;
  --ink:#151217;--muted:#6f6771;--white:#fff;--line:#eadce8;--green:#168f5b;
  --shadow-lg:0 24px 55px rgba(116,7,107,.20);--shadow-md:0 14px 28px rgba(116,7,107,.14);--shadow-sm:0 7px 18px rgba(116,7,107,.10);
  --radius-xl:28px;--radius-lg:22px;--radius-md:16px;
}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{min-height:100vh;margin:0;padding:28px 16px 12px;font-family:"Inter",Arial,sans-serif;color:var(--ink);background:
  radial-gradient(circle at 10% 10%,rgba(212,23,194,.18),transparent 28%),
  radial-gradient(circle at 92% 16%,rgba(116,7,107,.14),transparent 24%),
  linear-gradient(145deg,#F8EFF7 0%,#FFFDFE 44%,#F5EAF4 100%)}
button,input{font:inherit}
h1,h2,h3,.brand strong,.side-title,.nav button,.kicker,.week-no,.card h3,.open,.clear,.modal-title h2,.lesson h3,.lesson h4,.modal-title small,.stat b,.fullscreen-button,.pager button{font-family:"Nunito Sans",sans-serif}
.hero{position:relative;overflow:hidden;width:min(1450px,100%);margin:0 auto;padding:34px;border:1px solid rgba(255,255,255,.85);border-radius:var(--radius-xl);background:linear-gradient(135deg,rgba(255,255,255,.97),rgba(252,247,251,.94));box-shadow:var(--shadow-lg)}
.hero:before,.hero:after{content:"";position:absolute;border-radius:50%;pointer-events:none}
.hero:before{width:190px;height:190px;right:-55px;top:-72px;background:linear-gradient(135deg,#74076B,#D417C2);opacity:.82}
.hero:after{width:120px;height:120px;right:125px;bottom:-74px;background:linear-gradient(135deg,#980D8C,#D417C2);opacity:.65}
.brand{position:relative;z-index:1;display:flex;align-items:center;gap:12px}
.brand-mark{width:44px;height:44px;display:grid;place-items:center;border-radius:14px;background:linear-gradient(135deg,#74076B,#D417C2);color:#fff;font-size:26px;font-weight:900;box-shadow:0 10px 22px rgba(116,7,107,.22)}
.brand strong{font-size:21px;font-weight:800}
.hero-grid{position:relative;z-index:1;margin-top:22px;display:grid;grid-template-columns:1fr auto;gap:26px;align-items:end}
.hero h1{margin:0 0 12px;max-width:850px;font-size:clamp(2rem,5vw,3.8rem);line-height:1.02;font-weight:800;letter-spacing:-.04em}
.hero p{margin:0;max-width:790px;font-size:1rem;line-height:1.65;color:var(--ink)}
.stats{position:relative;z-index:1;display:flex;gap:10px;flex-wrap:wrap}
.stat{padding:11px 14px;border-radius:15px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-sm)}
.stat b{display:block;font-size:1.25rem;line-height:1}
.stat span{display:block;margin-top:4px;font-size:.78rem;color:var(--muted);font-family:"Inter",Arial,sans-serif;font-weight:700}
.toolbar{width:min(1450px,100%);margin:18px auto 0}
.toolbar-in{display:flex;gap:12px;padding:12px;border-radius:20px;background:rgba(255,255,255,.86);border:1px solid rgba(255,255,255,.95);box-shadow:var(--shadow-md);backdrop-filter:blur(18px)}
.search{flex:1;position:relative}
.search input{width:100%;height:46px;padding:0 14px 0 42px;border:1px solid var(--line);border-radius:14px;background:#fff;color:var(--ink);outline:none}
.search input:focus{border-color:var(--purple-600);box-shadow:0 0 0 4px rgba(212,23,194,.10)}
.search-icon{position:absolute;left:14px;top:50%;transform:translateY(-50%);opacity:.55}
.clear{border:0;border-radius:14px;padding:0 15px;min-height:46px;cursor:pointer;font-weight:800;background:#fff;color:var(--purple-900);border:1px solid var(--line);transition:.2s}
.clear:hover{transform:translateY(-1px);box-shadow:var(--shadow-sm)}
.layout{width:min(1450px,100%);margin:0 auto;padding:24px 0 8px;display:grid;grid-template-columns:265px 1fr;gap:22px;align-items:start}
.sidebar{position:sticky;top:18px;align-self:start;padding:16px;background:rgba(255,255,255,.92);border:1px solid rgba(255,255,255,.98);border-radius:22px;box-shadow:var(--shadow-sm);max-height:calc(100vh - 36px);display:flex;flex-direction:column;overflow:hidden}
.side-title{padding:7px 9px 13px;font-size:1.02rem;font-weight:800}
.nav{display:flex;flex-direction:column;gap:8px;overflow-y:auto;max-height:calc(100vh - 112px);padding-right:5px;scrollbar-width:thin;scrollbar-color:rgba(116,7,107,.55) transparent}.nav::-webkit-scrollbar{width:8px}.nav::-webkit-scrollbar-track{background:transparent}.nav::-webkit-scrollbar-thumb{background:linear-gradient(180deg,#D417C2,#74076B);border-radius:999px;border:2px solid transparent;background-clip:padding-box}
.nav button{border:1px solid var(--line);background:#fff;border-radius:14px;padding:12px 12px;text-align:left;color:var(--ink);cursor:pointer;display:flex;align-items:center;justify-content:flex-start;gap:10px;transition:.2s}
.nav button:hover{transform:translateY(-1px);box-shadow:var(--shadow-sm);background:var(--purple-050)}
.nav button.active{color:#fff;border-color:transparent;background:linear-gradient(135deg,var(--month-900),var(--month-700) 58%,var(--month-600) 100%);box-shadow:0 10px 20px rgba(116,7,107,.20)}
.nav button small{display:block;margin-top:2px;font-family:"Inter",Arial,sans-serif;font-size:.72rem;font-weight:600;opacity:.72}
.nav button.active small{opacity:.88}
.nav-dot{width:12px;height:12px;border-radius:50%;background:linear-gradient(135deg,var(--month-900),var(--month-600));flex:0 0 auto;box-shadow:0 2px 8px rgba(116,7,107,.22)}
.nav button.active .nav-dot{background:#fff}
.month{scroll-margin-top:20px;margin-bottom:26px;padding:20px 20px 22px;border-radius:var(--radius-lg);background:rgba(255,255,255,.92);border:1px solid rgba(255,255,255,.98);box-shadow:var(--shadow-sm)}
.month-head{display:flex;justify-content:space-between;align-items:end;gap:16px;margin-bottom:17px}
.kicker{color:var(--month-800);font-size:13px;font-weight:800;text-transform:uppercase;letter-spacing:.08em}
.month h2{margin:3px 0 0;font-size:clamp(24px,3vw,34px);font-weight:800;letter-spacing:-.03em}
.month-progress{min-width:175px}
.prog-label{font-size:12px;color:var(--muted);display:flex;justify-content:space-between;margin-bottom:7px}
.track{height:8px;background:#efe6ed;border-radius:99px;overflow:hidden}
.fill{height:100%;width:0;background:linear-gradient(135deg,var(--month-900),var(--month-600));border-radius:99px;transition:.25s}
.weeks{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.card{min-height:285px;padding:21px;border-radius:var(--radius-lg);background:linear-gradient(150deg,#fff,#FDF8FC);border:1px solid #f0e7ef;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;transition:.2s}
.card:hover{transform:translateY(-3px);border-color:rgba(116,7,107,.18);box-shadow:0 15px 28px rgba(116,7,107,.12)}
.card-top{display:flex;align-items:center;justify-content:space-between;gap:10px}
.week-no{display:flex;align-items:center;gap:10px;color:var(--month-800);font-size:.84rem;font-weight:800}
.week-no span{width:34px;height:34px;display:grid;place-items:center;border-radius:12px;background:var(--month-100);box-shadow:inset 0 0 0 1px rgba(116,7,107,.08)}
.check{width:34px;height:34px;border:1px solid var(--line);border-radius:11px;background:#fff;color:transparent;cursor:pointer;transition:.2s}
.check.done{background:#eaf8ef;border-color:#bae3ca;color:var(--green)}
.card h3{font-size:1.28rem;line-height:1.2;margin:16px 0 10px;font-weight:800;letter-spacing:-.02em}
.card p{margin:0 0 14px;color:var(--muted);font-size:.92rem;line-height:1.62}
.meta{font-size:.77rem;color:var(--muted);margin-bottom:12px}
.tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:auto}
.tag{padding:6px 10px;border-radius:999px;background:var(--month-100);color:var(--month-800);font-size:.72rem;font-weight:800;border:1px solid rgba(116,7,107,.08)}
.actions{display:flex;gap:9px;margin-top:18px}
.open{flex:1;height:45px;border:0;border-radius:14px;color:#fff;font-weight:800;cursor:pointer;background:linear-gradient(135deg,var(--month-900) 0%,var(--month-700) 52%,var(--month-600) 100%);box-shadow:0 12px 20px rgba(116,7,107,.16)}
.empty{display:none;padding:45px;text-align:center;background:#fff;border:1px dashed #ccbce0;border-radius:20px;color:var(--muted)}
.modal{position:fixed;inset:0;z-index:100;display:none;padding:18px;background:rgba(30,18,34,.42);backdrop-filter:blur(10px)}
.modal.show{display:flex}
.panel{--month-900:var(--purple-900);--month-800:var(--purple-800);--month-700:var(--purple-700);--month-600:var(--purple-600);--month-100:var(--purple-100);width:min(1540px,100%);height:calc(100vh - 36px);margin:auto;display:grid;grid-template-rows:auto 1fr;background:#fff;border-radius:24px;overflow:hidden;box-shadow:0 30px 100px rgba(0,0,0,.22)}
.modal-head{padding:14px 18px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:14px;background:linear-gradient(135deg,rgba(255,255,255,.98),rgba(252,247,251,.95))}
.modal-title{min-width:0;flex:1}
.modal-title small{color:var(--month-800);font-weight:800}
.modal-title h2{margin:2px 0;font-size:21px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-weight:800}
.modal-title p{margin:0;color:var(--muted);font-size:12px}
.modal-actions{display:flex;gap:8px}
.modal-actions button{height:42px;padding:0 14px;display:flex;align-items:center;border:1px solid var(--line);border-radius:12px;background:#fff;color:var(--month-800);font-weight:800;cursor:pointer;box-shadow:var(--shadow-sm)}
.close{width:42px;padding:0!important;justify-content:center;font-size:20px!important}
.modal-body{min-height:0;display:grid;grid-template-columns:330px 1fr}
.lesson{padding:22px;overflow:auto;border-right:1px solid var(--line);background:#fcfbfd}
.lesson h3{margin:0 0 9px;font-size:20px;font-weight:800}
.lesson>p{color:var(--muted);font-size:14px;line-height:1.65}
.lesson h4{margin:24px 0 9px;color:var(--month-800);font-size:13px;text-transform:uppercase;letter-spacing:.07em;font-weight:800}
.topic-list{display:flex;flex-direction:column;gap:8px}
.topic{padding:10px 11px;background:#fff;border:1px solid rgba(116,7,107,.10);border-radius:11px;font-size:13px;color:var(--ink)}
.notice{margin-top:18px;padding:12px;border-radius:14px;background:var(--month-100);color:var(--month-800);font-size:12px;line-height:1.55;border:1px solid rgba(116,7,107,.10)}
.pager{display:flex;gap:8px;margin-top:18px}
.pager button{flex:1;height:42px;border:1px solid var(--line);border-radius:12px;background:#fff;color:var(--month-800);font-weight:800;cursor:pointer}
.pager button:disabled{opacity:.4;cursor:not-allowed}
.viewer{min-height:0;position:relative;background:#302736}
.viewer iframe{width:100%;height:100%;border:0;background:#302736}
.loading{position:absolute;inset:0;display:grid;place-items:center;color:#fff;pointer-events:none}
.loading div{text-align:center}
.loading b{display:block;margin-bottom:6px;font-size:20px;font-family:"Nunito Sans",sans-serif;font-weight:800}
.loading span{color:rgba(255,255,255,.72);font-size:13px}
.viewer iframe:not([src=""])+.loading{display:none}
.fullscreen-button{white-space:nowrap}
.fullscreen-exit{position:absolute;z-index:20;top:14px;right:14px;height:42px;padding:0 16px;border:1px solid rgba(255,255,255,.28);border-radius:12px;background:rgba(30,21,40,.86);color:#fff;font-weight:800;cursor:pointer;display:none;align-items:center;gap:7px;box-shadow:0 8px 30px rgba(0,0,0,.28);backdrop-filter:blur(8px)}
.viewer:fullscreen,.viewer.fullscreen-fallback{width:100vw!important;height:100vh!important;min-height:100vh!important;background:#17111d!important}
.viewer:fullscreen{position:relative!important}
.viewer.fullscreen-fallback{position:fixed!important;inset:0!important;z-index:9999!important}
.viewer:fullscreen iframe,.viewer.fullscreen-fallback iframe{width:100vw!important;height:100vh!important}
.viewer:fullscreen .fullscreen-exit,.viewer.fullscreen-fallback .fullscreen-exit{display:flex}
@media(max-width:980px){.hero-grid{grid-template-columns:1fr}.layout{grid-template-columns:1fr}.sidebar{position:relative;top:0;max-height:none}.nav{flex-direction:row;overflow:auto;max-height:none;padding-right:0}.nav button{min-width:150px}.weeks{grid-template-columns:1fr}.modal-body{grid-template-columns:1fr;grid-template-rows:auto 1fr}.lesson{max-height:255px;border-right:0;border-bottom:1px solid var(--line)}}
@media(max-width:650px){body{padding:18px 12px 10px}.hero{padding:26px 18px 30px}.toolbar-in{flex-direction:column}.clear{width:100%}.layout{padding:20px 0 8px}.month{padding:16px}.month-head{align-items:start;flex-direction:column}.month-progress{width:100%}.modal{padding:0}.panel{height:100vh;border-radius:0}.modal-head{padding:10px}.lesson{padding:16px;max-height:275px}.card{padding:17px}}