:root{
  --bg:#f3f5f9;--panel:#ffffff;--panel-2:#f8fafc;--text:#172033;--muted:#718096;--line:#e4e8f0;
  --nav:#101827;--nav-2:#182235;--nav-text:#d7deea;--nav-muted:#7f8ba3;
  --accent:#3568e8;--accent-soft:#edf3ff;--accent-strong:#2554c7;
  --danger:#bd3d3d;--danger-soft:#fff0f0;--green:#16836f;--green-soft:#eaf9f4;--amber:#9a6700;--amber-soft:#fff7df;
  --radius:17px;--shadow:0 1px 2px rgba(15,23,42,.03),0 8px 24px rgba(15,23,42,.045)
}
*{box-sizing:border-box}
html{background:var(--bg)}
body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--bg);color:var(--text);font-size:14px}
a{color:inherit;text-decoration:none}button,input{font:inherit}button,a,input{outline-color:var(--accent)}
.app-shell{display:grid;grid-template-columns:258px minmax(0,1fr);min-height:100vh}
.sidebar{position:sticky;top:0;height:100vh;background:linear-gradient(180deg,var(--nav),#0d1421);color:var(--nav-text);padding:20px 14px 16px;display:flex;flex-direction:column;gap:15px;overflow-y:auto}
.brand{display:flex;align-items:center;gap:11px;padding:4px 8px 15px;border-bottom:1px solid rgba(255,255,255,.07)}
.brand-mark{display:grid;place-items:center;width:41px;height:41px;border-radius:13px;background:linear-gradient(145deg,#fff,#e6ebf5);color:#101827;font-weight:900;letter-spacing:-.04em;box-shadow:0 5px 16px rgba(0,0,0,.18)}
.brand>span:last-child{display:grid;gap:1px}.brand b{font-size:17px;color:white}.brand small{font-size:10px;color:var(--nav-muted);letter-spacing:.08em;text-transform:uppercase}
.main-nav,.subject-nav{display:grid;gap:3px}.main-nav a,.subject-nav a{display:flex;align-items:center;gap:10px;min-height:40px;padding:8px 10px;border-radius:10px;color:#bbc6d8;transition:background .15s,color .15s}
.main-nav a:hover,.subject-nav a:hover{background:rgba(255,255,255,.055);color:#fff}.main-nav a.active,.subject-nav a.active{background:var(--nav-2);color:#fff;box-shadow:inset 3px 0 0 #6e95ff}
.nav-icon{width:22px;text-align:center;font-size:16px;color:#92a1b8}.main-nav em{margin-left:auto;background:#26334a;color:#dce6fa;font-size:10px;font-style:normal;font-weight:800;min-width:22px;padding:3px 6px;text-align:center;border-radius:999px}
.nav-section-head{display:flex;align-items:center;justify-content:space-between;padding:8px 10px 3px;color:var(--nav-muted);text-transform:uppercase;letter-spacing:.12em;font-size:10px;font-weight:800}.nav-section-head small{background:rgba(255,255,255,.06);padding:2px 6px;border-radius:999px}
.subject-nav{gap:2px}.subject-nav a{font-size:12px;min-height:36px}.subject-badge{display:inline-grid;place-items:center;min-width:32px;height:25px;padding:0 7px;border-radius:8px;background:#eef3ff;color:#2d5bc6;font-size:10px;font-weight:850;letter-spacing:.02em}.sidebar .subject-badge{background:rgba(117,151,235,.13);color:#a9c0ff}.subject-badge.small{min-width:29px;height:23px;font-size:9px}
.sidebar-summary{margin-top:auto;background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.06);border-radius:13px;padding:12px}.sidebar-summary-head{display:flex;justify-content:space-between;gap:8px;font-size:10px;color:#9ba8bb}.sidebar-summary-head strong{font-size:11px;color:#fff}.mini-bar{height:5px;background:rgba(255,255,255,.09);border-radius:999px;overflow:hidden;margin:9px 0 7px}.mini-bar i{display:block;height:100%;background:#6f95ff;border-radius:999px}.sidebar-summary>small{font-size:9px;color:#8390a5}.next-mini{display:flex;justify-content:space-between;gap:8px;border-top:1px solid rgba(255,255,255,.07);margin-top:10px;padding-top:10px;font-size:9px;color:#8592a7}.next-mini b{color:#dce5f4;font-size:10px}
.sidebar-user{display:grid;grid-template-columns:34px minmax(0,1fr) auto;align-items:center;gap:9px;padding:11px 8px 2px;border-top:1px solid rgba(255,255,255,.07)}.avatar{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;background:#25324a;color:#d9e5ff;font-weight:800}.sidebar-user>div:nth-child(2){display:grid;min-width:0}.sidebar-user b{font-size:11px;color:#f3f6fb;overflow:hidden;text-overflow:ellipsis}.sidebar-user small{font-size:9px;color:#7f8ba3}.sidebar-user button{background:transparent;border:0;color:#8290a7;cursor:pointer;padding:7px;border-radius:8px}.sidebar-user button:hover{background:rgba(255,255,255,.06);color:white}
main{padding:30px clamp(18px,3vw,42px) 48px;min-width:0;max-width:1780px;width:100%;margin:0 auto}
.topbar{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:22px}.eyebrow{margin:0 0 5px;text-transform:uppercase;letter-spacing:.14em;font-size:10px;font-weight:800;color:#8590a3}h1{margin:0;font-size:clamp(26px,3vw,35px);letter-spacing:-.035em}h2{margin:0;font-size:16px;letter-spacing:-.01em}.page-subtitle{margin:7px 0 0;color:var(--muted);font-size:12px}.top-actions{display:flex;gap:7px;align-items:center}.btn,.primary{display:inline-flex;align-items:center;justify-content:center;min-height:38px;border:1px solid var(--line);background:#fff;padding:8px 13px;border-radius:10px;font-weight:700;font-size:12px;cursor:pointer;box-shadow:0 1px 2px rgba(15,23,42,.02)}.btn:hover{border-color:#cdd4df;background:#fbfcfe}.icon-btn{width:38px;padding:0}.primary{background:var(--nav);color:#fff;width:100%;border-color:var(--nav)}
.stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-bottom:18px}.stat-card{display:grid;grid-template-columns:40px minmax(0,1fr);align-items:center;gap:11px;background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:15px;box-shadow:var(--shadow);min-width:0}.stat-icon{display:grid;place-items:center;width:40px;height:40px;border-radius:12px;background:#f2f5fa;color:#53647c;font-weight:900}.stat-card:nth-child(2) .stat-icon{background:var(--danger-soft);color:var(--danger)}.stat-card:nth-child(3) .stat-icon{background:var(--accent-soft);color:var(--accent)}.stat-card:nth-child(4) .stat-icon{background:var(--amber-soft);color:var(--amber)}.stat-card>div{display:grid;min-width:0}.stat-card small{font-size:9px;text-transform:uppercase;letter-spacing:.09em;color:#8b95a6;font-weight:800}.stat-card strong{margin-top:3px;font-size:16px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.stat-card span:not(.stat-icon){margin-top:2px;color:var(--muted);font-size:10px}
.dashboard-grid,.subject-grid,.exam-page-grid{display:grid;grid-template-columns:minmax(0,1fr) 335px;gap:18px;align-items:start}.calendar-card,.panel,.subject-stat,.notice-card,.books-intro{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}.calendar-head,.panel-title{padding:15px 17px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:12px;min-height:58px}.calendar-head>div:first-child,.panel-title>div:first-child{display:grid;gap:3px}.calendar-head span,.panel-title span,.muted{font-size:10px;color:var(--muted)}.panel-title>a{font-size:10px;color:var(--accent);font-weight:800}.legend{display:flex;gap:12px;flex-wrap:wrap}.legend>span{display:flex;align-items:center;gap:5px}.legend-dot{display:inline-block;width:7px;height:7px;border-radius:50%}.legend-dot.lesson{background:#8aa9f1}.legend-dot.exam{background:#d45d5d}.legend-dot.done{background:#46a993}
.calendar-scroll{overflow-x:auto}.weekdays,.calendar-grid{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));min-width:760px}.weekdays{background:#fafbfc}.weekdays b{font-size:9px;color:#8c96a7;padding:9px 10px;border-bottom:1px solid var(--line);text-align:right;text-transform:uppercase;letter-spacing:.08em}.day{min-height:128px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);padding:7px;min-width:0;background:#fff}.day:nth-child(7n){border-right:0}.day.empty{background:#fafbfc}.day.today{background:#fbfdff;box-shadow:inset 0 0 0 1px #cbdcff}.day-number{display:flex;justify-content:flex-end;margin-bottom:5px}.day-number span{display:grid;place-items:center;min-width:24px;height:24px;padding:0 5px;border-radius:8px;font-size:10px;font-weight:800}.today .day-number span{background:var(--accent);color:#fff}.lesson-chip{display:flex;align-items:center;gap:5px;padding:5px 6px;margin:4px 0;border-radius:7px;background:var(--accent-soft);border:1px solid #e2eaff;font-size:10px;cursor:pointer;line-height:1.15;overflow:hidden;transition:.15s}.lesson-chip:hover{border-color:#c6d5fb}.lesson-chip input{margin:0;flex:0 0 auto;width:13px;height:13px;accent-color:var(--green)}.lesson-chip span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.lesson-chip.done{background:var(--green-soft);border-color:#d7f0e8;color:var(--green);text-decoration:line-through}.exam-chip{display:flex;align-items:center;gap:4px;font-size:9px;font-weight:800;padding:5px 6px;background:var(--danger-soft);border:1px solid #ffe0e0;color:var(--danger);border-radius:7px;margin:4px 0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.right-col{display:grid;align-content:start;gap:18px}.block-padding{padding:14px 17px;margin:0}
.compact-lesson{display:grid;grid-template-columns:auto 40px minmax(0,1fr);gap:8px;align-items:center;padding:11px 15px;border-bottom:1px solid var(--line);cursor:pointer}.compact-lesson:last-child{border-bottom:0}.compact-lesson input{accent-color:var(--green)}.compact-time{font-size:10px;font-weight:800;color:#68758a}.compact-lesson>span:last-child{display:grid;min-width:0}.compact-lesson b{font-size:11px}.compact-lesson small{color:var(--muted);font-size:9px;margin-top:2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.compact-lesson.done{background:#fbfdfc}.compact-lesson.done b{text-decoration:line-through;color:var(--muted)}
.empty-state{display:grid;place-items:center;text-align:center;padding:25px 18px;color:var(--muted)}.empty-state>span{display:grid;place-items:center;width:38px;height:38px;border-radius:12px;background:#f3f5f8;margin-bottom:8px;font-size:17px}.empty-state b{color:#536075;font-size:11px}.empty-state small{font-size:9px;margin-top:4px;max-width:230px}.empty-state.roomy{padding:44px 20px}.hidden{display:none!important}
.exam-row{display:grid;grid-template-columns:40px minmax(0,1fr);gap:10px;align-items:center;padding:11px 15px;border-bottom:1px solid var(--line)}.exam-row:last-child{border-bottom:0}.exam-row:hover{background:#fbfcfe}.exam-date{display:grid;place-items:center;width:38px;height:40px;border-radius:10px;background:var(--danger-soft);color:var(--danger);line-height:1}.exam-date b{font-size:14px}.exam-date small{font-size:8px;text-transform:uppercase;margin-top:3px}.exam-row>div{display:grid;min-width:0}.exam-row>div b{font-size:11px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.exam-row>div span{font-size:9px;color:var(--muted);margin-top:2px}.exam-row.undated .exam-date{background:var(--amber-soft);color:var(--amber)}
.progress-row{display:block;padding:11px 15px;border-bottom:1px solid var(--line)}.progress-row:last-child{border-bottom:0}.progress-row:hover{background:#fbfcfe}.progress-row>div:first-child{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:8px;align-items:center}.progress-row b{font-size:10px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.progress-row .progress-text{font-size:9px;color:var(--muted)}.bar{height:5px;background:#edf0f5;border-radius:999px;margin-top:8px;overflow:hidden}.bar i{display:block;height:100%;background:linear-gradient(90deg,#4d79ea,#6a92f4);border-radius:999px;transition:width .2s}.bar.large{height:6px;margin-top:10px}
.subject-stat-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-bottom:18px}.subject-stat{padding:16px;display:grid}.subject-stat small{font-size:9px;text-transform:uppercase;letter-spacing:.09em;color:#8b95a6;font-weight:800}.subject-stat strong{font-size:21px;margin-top:4px;letter-spacing:-.03em}.subject-stat>span{font-size:10px;color:var(--muted);margin-top:2px}.subject-stat>a{font-size:10px;color:var(--accent);font-weight:800;margin-top:10px}
.lesson-list{display:grid}.lesson-row{display:grid;grid-template-columns:auto 48px minmax(0,1fr) auto;gap:10px;align-items:center;padding:13px 17px;border-bottom:1px solid var(--line);cursor:pointer;transition:background .15s}.lesson-row:last-child{border-bottom:0}.lesson-row:hover{background:#fafcff}.lesson-row input{width:16px;height:16px;accent-color:var(--green)}.lesson-no{font-weight:850;color:var(--accent);font-size:11px}.lesson-body{min-width:0}.lesson-body b{font-size:11px;display:block}.lesson-body span{display:block;font-size:9px;color:var(--muted);margin-top:4px}.lesson-state{font-size:8px;text-transform:uppercase;letter-spacing:.08em;color:#9ba4b3;background:#f3f5f7;padding:4px 7px;border-radius:999px;font-weight:800}.lesson-row.done{background:#fbfdfc}.lesson-row.done .lesson-body b{text-decoration:line-through;color:var(--muted)}.lesson-row.done .lesson-state{background:var(--green-soft);color:var(--green)}
.detail-row{display:grid;grid-template-columns:32px minmax(0,1fr);gap:9px;padding:13px 16px;border-bottom:1px solid var(--line)}.detail-row:last-child{border-bottom:0}.detail-icon{display:grid;place-items:center;width:31px;height:31px;border-radius:9px;background:var(--danger-soft);color:var(--danger);font-weight:900}.detail-row>div{display:grid;min-width:0}.detail-row b{font-size:11px}.detail-row span:not(.detail-icon),.detail-row small{font-size:9px;color:var(--muted);margin-top:2px}.warning-row .detail-icon{background:var(--amber-soft);color:var(--amber)}.warning-row{background:#fffdf8}
.book-mini{display:grid;grid-template-columns:70px minmax(0,1fr);gap:9px;padding:12px 16px;border-bottom:1px solid var(--line)}.book-mini:last-child{border-bottom:0}.book-mini>span{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:9px;font-weight:800;color:var(--accent);background:var(--accent-soft);padding:5px 6px;border-radius:7px;height:max-content;text-align:center}.book-mini>div{display:grid;min-width:0}.book-mini b{font-size:10px;line-height:1.35}.book-mini small{font-size:8px;color:var(--muted);margin-top:3px}
.resource-row{display:grid;padding:12px 16px;border-bottom:1px solid var(--line)}.resource-row:last-child{border-bottom:0}.resource-row:hover{background:#fafcff}.resource-type{width:max-content;background:#f1f4f8;color:#66758a;padding:3px 6px;border-radius:6px;text-transform:uppercase;font-size:7px!important;letter-spacing:.07em;font-weight:850;margin-bottom:5px!important}.resource-row b{font-size:10px}.resource-row>span:last-child{font-size:9px;color:var(--muted);margin-top:3px}
.notice-card{display:grid;grid-template-columns:42px minmax(0,1fr);gap:12px;align-items:center;padding:14px 16px;margin-bottom:18px;background:#fffdf7;border-color:#f0dfaa}.notice-icon{display:grid;place-items:center;width:42px;height:42px;border-radius:12px;background:var(--amber-soft);color:var(--amber);font-weight:900}.notice-card>div{display:grid}.notice-card b{font-size:12px}.notice-card span:not(.notice-icon){font-size:10px;color:var(--muted);margin-top:3px}
.exam-list-large{display:grid}.exam-large{display:grid;grid-template-columns:52px minmax(0,1fr) auto;gap:13px;align-items:center;padding:15px 17px;border-bottom:1px solid var(--line)}.exam-large:last-child{border-bottom:0}.exam-large:hover{background:#fafcff}.exam-calendar{display:grid;place-items:center;width:50px;height:52px;border-radius:12px;background:var(--danger-soft);color:var(--danger);line-height:1}.exam-calendar strong{font-size:18px}.exam-calendar span{font-size:8px;text-transform:uppercase;margin-top:3px;font-weight:800}.exam-large-body{display:flex;align-items:center;gap:10px;min-width:0}.exam-large-body>div{display:grid;min-width:0}.exam-large-body b{font-size:11px}.exam-large-body span{font-size:9px;color:var(--muted);margin-top:3px}.days-left{font-size:9px;color:#7b8798;white-space:nowrap}.past-exam{display:grid;grid-template-columns:45px minmax(0,1fr);gap:9px;padding:11px 15px;border-bottom:1px solid var(--line)}.past-exam:last-child{border-bottom:0}.past-exam>span{font-size:9px;color:#8d97a7;font-weight:800}.past-exam>div{display:grid}.past-exam b{font-size:10px}.past-exam small{font-size:8px;color:var(--muted);margin-top:2px}
.books-intro{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:15px 17px;margin-bottom:18px}.books-intro>div{display:flex;align-items:center;gap:12px}.books-icon{display:grid;place-items:center;width:43px;height:43px;border-radius:12px;background:var(--accent-soft);color:var(--accent);font-size:20px}.books-intro b{font-size:12px}.books-intro p{margin:3px 0 0;font-size:10px;color:var(--muted)}.book-search{display:flex;align-items:center;gap:7px;width:min(320px,100%);border:1px solid var(--line);background:#fafbfc;border-radius:10px;padding:0 10px}.book-search>span{color:#8994a6}.book-search input{width:100%;height:38px;border:0;background:transparent;outline:0;font-size:11px;color:var(--text)}.book-sections{display:grid;gap:14px}.book-section{overflow:hidden}.book-table{display:grid}.book-row{display:grid;grid-template-columns:90px minmax(0,1fr) auto;gap:13px;align-items:center;padding:13px 17px;border-bottom:1px solid var(--line)}.book-row:last-child{border-bottom:0}.book-row:hover{background:#fafcff}.book-code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:10px;font-weight:850;color:#355cae;background:#f0f4fd;border:1px solid #e3eaf8;border-radius:8px;padding:6px 7px;text-align:center}.book-title{display:grid;min-width:0}.book-title b{font-size:11px;line-height:1.35}.book-title span{font-size:9px;color:var(--muted);margin-top:3px}.book-edit{font-size:9px;color:var(--accent);font-weight:800;white-space:nowrap}
.login-page{min-height:100vh;display:grid;place-items:center;padding:24px;background:#eef1f6}.login-card{width:min(390px,100%);background:#fff;border:1px solid var(--line);border-radius:18px;padding:28px;box-shadow:var(--shadow)}.login-mark{display:grid;place-items:center;width:42px;height:42px;border-radius:12px;background:var(--nav);color:#fff;font-weight:900}.login-card h1{margin:18px 0 4px}.login-card p{margin:0 0 22px;color:var(--muted)}.login-card label{display:grid;gap:6px;font-size:11px;font-weight:700;margin:14px 0}.login-card input{width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:10px;font-size:16px}
@media(max-width:1180px){.stat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.dashboard-grid,.subject-grid,.exam-page-grid{grid-template-columns:minmax(0,1fr) 300px}}
@media(max-width:960px){.app-shell{grid-template-columns:220px minmax(0,1fr)}.sidebar{padding-left:10px;padding-right:10px}.dashboard-grid,.subject-grid,.exam-page-grid{grid-template-columns:1fr}.right-col{grid-template-columns:repeat(2,minmax(0,1fr))}.today-panel{grid-column:1/-1}.subject-stat-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:720px){
  .app-shell{display:block}.sidebar{position:static;height:auto;overflow:visible;padding:12px;gap:10px}.brand{border-bottom:0;padding-bottom:7px}.brand small,.sidebar-summary,.sidebar-user,.nav-section-head{display:none}.main-nav{display:flex;overflow-x:auto;padding-bottom:2px}.main-nav a{white-space:nowrap;min-width:max-content}.subject-nav{display:flex;overflow-x:auto;padding-top:3px;border-top:1px solid rgba(255,255,255,.07)}.subject-nav a{min-width:max-content}.subject-nav a span:last-child{display:none}.subject-nav .subject-badge{min-width:36px}.main-nav a.active,.subject-nav a.active{box-shadow:none;background:#23304a}
  main{padding:18px 13px 36px}.topbar{align-items:flex-start}.page-subtitle{max-width:240px}.stat-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.stat-card{grid-template-columns:32px minmax(0,1fr);padding:11px;gap:8px}.stat-icon{width:32px;height:32px;border-radius:9px}.stat-card strong{font-size:13px}.dashboard-grid,.subject-grid,.exam-page-grid{grid-template-columns:1fr}.right-col{grid-template-columns:1fr}.calendar-card,.panel,.subject-stat,.notice-card,.books-intro{border-radius:14px}.calendar-head{align-items:flex-start}.legend{display:none}.subject-stat-grid{grid-template-columns:1fr 1fr}.subject-stat-grid .subject-stat:first-child{grid-column:1/-1}.lesson-row{grid-template-columns:auto 42px minmax(0,1fr);padding:12px}.lesson-state{display:none}.books-intro{display:grid}.book-search{width:100%}.book-row{grid-template-columns:78px minmax(0,1fr);gap:9px}.book-edit{display:none}.exam-large{grid-template-columns:45px minmax(0,1fr)}.days-left{display:none}.exam-calendar{width:43px;height:46px}.exam-large-body{gap:7px}.exam-large-body .subject-badge{display:none}
}
@media(max-width:390px){.stat-grid{grid-template-columns:1fr}.top-actions .btn:nth-child(2){display:none}.subject-stat-grid{grid-template-columns:1fr}.subject-stat-grid .subject-stat:first-child{grid-column:auto}.books-intro>div{align-items:flex-start}}