:root{--primary:#5b21b6;--primary-dark:#431596;--primary-soft:#f2edff;--ink:#151326;--muted:#686579;--line:#e8e5ef;--surface:#fff;--canvas:#faf9fc;--blue:#2563eb;--green:#07875d;--orange:#d97706;--danger:#dc2626;--success:#07875d;--radius:18px;--shadow:0 14px 40px rgba(35,22,67,.08);--font-heading:'Manrope',sans-serif;--font-body:'DM Sans',sans-serif;--transition:.2s ease}
*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{background:var(--canvas);color:var(--ink);font-family:var(--font-body);line-height:1.55}button,input,textarea{font:inherit}button,a{transition:var(--transition)}a{color:inherit;text-decoration:none}img{display:block;max-width:100%}h1,h2,h3,h4{font-family:var(--font-heading);letter-spacing:-.035em;line-height:1.18}.container{width:min(1180px,calc(100% - 40px));margin-inline:auto}
.site-header{background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:100;backdrop-filter:blur(14px)}.header-container{height:72px;display:flex;align-items:center;gap:30px}.logo{display:flex;align-items:center;gap:9px;font-family:var(--font-heading);font-size:20px;font-weight:800;white-space:nowrap}.logo>span:last-child>span{color:var(--primary)}.logo-mark{display:grid;place-items:center;width:34px;height:34px;border-radius:11px;background:var(--primary);color:#fff;font-size:15px}.site-nav{display:flex;align-items:center;gap:28px;margin-left:18px}.site-nav a{color:var(--muted);font-size:14px;font-weight:600;position:relative;padding:25px 0}.site-nav a:hover,.site-nav a.active{color:var(--primary)}.site-nav a.active:after{content:"";position:absolute;height:3px;border-radius:3px;background:var(--primary);bottom:0;left:0;right:0}.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}.header-search-form{position:relative;width:210px}.header-search-form i{position:absolute;left:13px;top:50%;transform:translateY(-50%);color:#8b8797;font-size:13px}.header-search-form input{width:100%;border:1px solid var(--line);background:#f7f6fa;border-radius:11px;padding:9px 12px 9px 36px;outline:0}.header-search-form input:focus{background:#fff;border-color:var(--primary)}.admin-link{display:flex;align-items:center;gap:7px;border:1px solid var(--line);padding:9px 12px;border-radius:11px;font-size:14px;font-weight:600}.admin-link:hover{border-color:var(--primary);color:var(--primary)}.menu-toggle{display:none;border:0;background:transparent;font-size:20px;color:var(--ink)}
.home-hero{background:linear-gradient(120deg,#f4efff 0%,#fff 55%,#eef7ff 100%);border-bottom:1px solid var(--line);overflow:hidden}.hero-shell{min-height:500px;display:grid;grid-template-columns:1.35fr .65fr;gap:70px;align-items:center;padding-block:70px}.eyebrow,.section-kicker{color:var(--primary);font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:.08em}.eyebrow{display:inline-flex;align-items:center;gap:7px;background:#fff;border:1px solid #e4dafb;padding:7px 11px;border-radius:99px}.hero-copy h1{font-size:clamp(42px,5vw,64px);max-width:720px;margin:18px 0}.hero-copy h1 span{color:var(--primary)}.hero-copy>p{font-size:18px;color:var(--muted);max-width:680px;margin-bottom:27px}.hero-search{display:flex;align-items:center;background:#fff;border:1px solid #ded8e8;border-radius:15px;padding:7px 7px 7px 18px;max-width:680px;box-shadow:0 12px 30px rgba(57,35,100,.1)}.hero-search>i{color:var(--primary);margin-right:12px}.hero-search input{border:0;outline:0;min-width:0;flex:1;padding:11px 0;color:var(--ink)}.hero-search button{border:0;border-radius:10px;padding:12px 23px;background:var(--primary);color:#fff;font-weight:700;cursor:pointer}.hero-search button:hover{background:var(--primary-dark)}.popular-searches{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin-top:15px;font-size:13px;color:var(--muted)}.popular-searches a{border-bottom:1px solid #bbb3c8}.popular-searches a:hover{color:var(--primary)}
.study-card{background:#21183c;color:#fff;border-radius:24px;padding:28px;box-shadow:0 25px 60px rgba(34,20,65,.2);transform:rotate(1deg)}.study-card-top{display:flex;justify-content:space-between;align-items:center;font-size:13px;color:#d8d0ec}.study-card-top i{font-size:26px;color:#b9a1ff}.study-card h2{font-size:26px;margin:24px 0 28px}.study-stats{display:grid;grid-template-columns:1fr 1fr;gap:12px}.study-stats div{background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.1);padding:16px;border-radius:14px}.study-stats strong{display:block;font:800 30px var(--font-heading)}.study-stats span{font-size:12px;color:#c9c1da}.study-note{font-size:12px;margin-top:19px;color:#ddd6eb}.study-note i{color:#61e1ad;margin-right:5px}
.subject-section,.content-section{padding-top:70px}.section-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:25px}.section-heading h2{font-size:30px;margin-top:5px}.section-heading p{color:var(--muted);font-size:14px;margin-top:6px}.compact-heading{align-items:center}.clear-link,.view-all{color:var(--primary);font-size:14px;font-weight:700;white-space:nowrap}.view-all i,.clear-link i{margin-left:6px}.subject-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.subject-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:14px}.subject-card:hover,.subject-card.selected{transform:translateY(-3px);box-shadow:var(--shadow);border-color:currentColor}.subject-icon{display:grid;place-items:center;width:48px;height:48px;border-radius:14px;font-size:20px}.subject-card strong{display:block;font-family:var(--font-heading);font-size:16px}.subject-card small{display:block;color:var(--muted);font-size:12px;margin-top:2px}.subject-card>i{font-size:13px}.subject-card.physics{color:var(--blue)}.subject-card.chemistry{color:var(--green)}.subject-card.mathematics{color:var(--orange)}.subject-card.physics .subject-icon{background:#eaf1ff}.subject-card.chemistry .subject-icon{background:#e8f8f2}.subject-card.mathematics .subject-icon{background:#fff4df}.subject-card small{color:var(--muted)}
.results-banner{margin-top:45px;background:var(--primary-soft);border:1px solid #dfd2fb;border-radius:16px;padding:20px 24px;display:flex;align-items:center;justify-content:space-between}.results-banner span{font-size:12px;text-transform:uppercase;letter-spacing:.07em;color:var(--primary);font-weight:700}.results-banner h2{font-size:22px;margin-top:3px}.results-banner p{color:var(--muted);font-size:14px}.resource-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.lecture-tile,.material-tile{background:#fff;border:1px solid var(--line);border-radius:17px;overflow:hidden;transition:var(--transition)}.lecture-tile{cursor:pointer}.lecture-tile:hover,.lecture-tile:focus,.material-tile:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#d9cfee;outline:0}.lecture-image{aspect-ratio:16/9;position:relative;overflow:hidden;background:#ddd}.lecture-image img{width:100%;height:100%;object-fit:cover;transition:.35s ease}.lecture-tile:hover img{transform:scale(1.04)}.subject-pill{display:inline-flex;align-items:center;border-radius:99px;padding:5px 9px;font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.04em}.lecture-image>.subject-pill{position:absolute;top:12px;left:12px}.subject-pill.physics,.badge-physics{background:#e8f0ff;color:#215ecb}.subject-pill.chemistry,.badge-chemistry{background:#e2f7ef;color:#087450}.subject-pill.mathematics,.badge-mathematics{background:#fff0d5;color:#ad6200}.play-button{position:absolute;display:grid;place-items:center;width:47px;height:47px;border-radius:50%;background:#fff;color:var(--primary);left:50%;top:50%;transform:translate(-50%,-50%);box-shadow:0 8px 20px rgba(0,0,0,.2)}.play-button i{font-size:14px;margin-left:2px}.lecture-body{padding:17px}.topic-label{color:var(--primary);font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.06em}.lecture-body h3,.material-tile h3{font-size:17px;margin:6px 0 17px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.resource-meta{display:flex;align-items:center;justify-content:space-between;padding-top:13px;border-top:1px solid var(--line);font-size:12px;color:var(--muted)}.resource-meta strong{color:var(--primary)}
.materials-wrap{background:#f3f1f7;margin-top:75px;padding-bottom:75px}.material-tile{padding:20px;display:flex;flex-direction:column;min-height:290px}.material-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.pdf-icon{display:grid;place-items:center;width:45px;height:45px;border-radius:12px;background:#fff0f0;color:#db3434;font-size:21px}.material-tile h3{margin-bottom:9px}.material-tile p{color:var(--muted);font-size:13px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.material-tile>a{display:flex;justify-content:space-between;align-items:center;color:var(--primary);font-weight:700;font-size:13px;border-top:1px solid var(--line);padding-top:14px;margin-top:auto}.empty-state{grid-column:1/-1;text-align:center;padding:50px;border:1px dashed #cdc7d7;border-radius:17px;color:var(--muted)}.empty-state i{font-size:27px;color:var(--primary)}.empty-state h3{color:var(--ink);margin:10px 0 5px}
.player-panel{background:#fff;border:1px solid #d8cbee;border-radius:20px;padding:25px;margin-top:60px;box-shadow:var(--shadow)}.player-panel[hidden]{display:none}.player-header{display:flex;justify-content:space-between;align-items:center}.player-header>div{display:flex;align-items:center;gap:10px}.player-header button{border:0;background:#f2f0f5;border-radius:9px;width:35px;height:35px;cursor:pointer}.player-panel>h2{font-size:24px;margin:15px 0}.player-wrapper{display:grid;grid-template-columns:2fr 1fr;gap:20px}.video-container{background:#111;border-radius:14px;overflow:hidden;aspect-ratio:16/9}.video-container iframe{width:100%;height:100%;border:0}.video-notes{background:#f7f5fa;border-radius:14px;padding:18px;display:flex;flex-direction:column}.video-notes h3{font-size:16px}.video-notes p{font-size:12px;color:var(--muted);margin:6px 0 12px}.notes-area{width:100%;min-height:120px;flex:1;border:1px solid var(--line);border-radius:10px;padding:11px;resize:vertical;outline:0;margin-bottom:10px}.notes-area:focus{border-color:var(--primary)}.player-description{color:var(--muted);font-size:13px;margin-top:15px}.study-cta{margin-block:75px;background:linear-gradient(115deg,#4c1d95,#6d28d9);color:#fff;border-radius:23px;padding:38px 42px;display:flex;align-items:center;justify-content:space-between;gap:30px}.study-cta .eyebrow{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.15);color:#e5d9ff}.study-cta h2{font-size:30px;margin:12px 0 7px}.study-cta p{color:#d9ccef}.btn{border:0;border-radius:10px;padding:11px 17px;display:inline-flex;align-items:center;justify-content:center;gap:7px;font-weight:700;cursor:pointer}.btn-primary{background:var(--primary);color:#fff}.btn-secondary{background:#fff;border:1px solid var(--line)}.btn-danger{background:var(--danger);color:#fff}.btn-sm{padding:8px 12px;font-size:13px}.btn-light{background:#fff;color:var(--primary);white-space:nowrap}
.site-footer{background:#181423;color:#fff;padding:45px 0}.footer-grid{display:grid;grid-template-columns:1fr auto auto;align-items:center;gap:45px}.footer-logo{margin-bottom:8px}.site-footer p,.copyright{color:#a9a4b4;font-size:13px}.footer-links{display:flex;gap:22px;font-size:13px;color:#d3cfdb}.footer-links a:hover{color:#fff}
/* Dedicated search results */
.search-page-head{background:linear-gradient(120deg,#f3edff,#f8fbff);border-bottom:1px solid var(--line);padding:48px 0}.search-page-head h1{font-size:38px;margin:7px 0 22px}.results-search{display:flex;align-items:center;max-width:760px;background:#fff;border:1px solid #d9d2e4;border-radius:14px;padding:6px 6px 6px 17px;box-shadow:0 10px 28px rgba(40,25,70,.08)}.results-search>i{color:var(--primary);margin-right:12px}.results-search input{flex:1;min-width:0;border:0;outline:0;padding:12px 0}.results-search button{border:0;background:var(--primary);color:#fff;border-radius:10px;padding:12px 22px;font-weight:700;cursor:pointer}.search-content{padding-block:42px 75px}.search-layout{display:grid;grid-template-columns:230px 1fr;gap:34px}.search-filters{align-self:start;background:#fff;border:1px solid var(--line);border-radius:15px;padding:18px;position:sticky;top:95px}.filter-title{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);padding-bottom:14px}.filter-title h2{font-size:18px}.filter-title a{font-size:12px;color:var(--primary);font-weight:700}.filter-group{padding-top:18px}.filter-group+ .filter-group{border-top:1px solid var(--line);margin-top:18px}.filter-group h3{font-size:12px;text-transform:uppercase;letter-spacing:.07em;color:var(--muted);margin-bottom:8px}.filter-option{display:flex;justify-content:space-between;align-items:center;border-radius:9px;padding:9px 10px;color:var(--muted);font-size:13px;margin:2px 0}.filter-option span i{width:20px}.filter-option>i{display:none;font-size:10px}.filter-option:hover,.filter-option.active{background:var(--primary-soft);color:var(--primary);font-weight:700}.filter-option.active>i{display:block}.result-summary{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:22px}.result-summary>div>span{font-size:12px;color:var(--muted)}.result-summary h2{font-size:26px;margin-top:3px}.active-filter-label{background:var(--primary-soft);color:var(--primary);font-size:11px;font-weight:700;border-radius:99px;padding:6px 10px}.search-card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.search-resource-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;min-width:0}.search-resource-card:hover{transform:translateY(-3px);border-color:#d5c7ed;box-shadow:var(--shadow)}.search-card-image{position:relative;aspect-ratio:16/8;overflow:hidden;background:#ddd}.search-card-image img{width:100%;height:100%;object-fit:cover}.search-card-file{height:145px;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:9px;background:linear-gradient(135deg,#fff4f4,#faf7ff);color:var(--muted);font-size:12px}.search-card-file .pdf-icon{width:54px;height:54px;font-size:25px}.search-card-body{padding:18px;display:flex;flex-direction:column;flex:1}.card-tags{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.card-tags>span:last-child{font-size:10px;color:var(--muted);text-transform:uppercase;font-weight:700}.search-card-body h3{font-size:17px;margin:6px 0 8px}.search-card-body p{font-size:12px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:17px}.search-card-body>strong{display:flex;justify-content:space-between;align-items:center;color:var(--primary);font-size:12px;border-top:1px solid var(--line);padding-top:13px;margin-top:auto}.search-card-grid .empty-state .btn{margin-top:18px;color:#fff}
/* Shared listing and admin UI */
.grid-3{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:22px}.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:0 4px 15px rgba(30,20,50,.03)}.filter-bar{display:flex;justify-content:space-between;gap:18px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:15px;padding:14px;margin:24px 0 30px}.subject-tabs{display:flex;gap:6px;flex-wrap:wrap}.tab-btn{padding:9px 14px;border-radius:9px;color:var(--muted);font-size:13px;font-weight:700}.tab-btn.active,.tab-btn:hover{background:var(--primary-soft);color:var(--primary)}.search-form{display:flex;gap:8px;max-width:380px;flex:1}.search-input,.form-control{width:100%;border:1px solid var(--line);border-radius:10px;padding:10px 12px;outline:0;background:#fff}.search-input:focus,.form-control:focus{border-color:var(--primary)}.lecture-card,.material-card{display:flex;flex-direction:column}.lecture-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;border-radius:12px;margin-bottom:15px}.lecture-thumb img{width:100%;height:100%;object-fit:cover}.subject-badge{position:absolute;top:10px;left:10px;padding:4px 8px;border-radius:99px;font-size:10px;font-weight:700;text-transform:uppercase}.lecture-info{display:flex;flex-direction:column;flex:1}.lecture-topic,.material-topic{color:var(--primary);font-size:11px;font-weight:700;text-transform:uppercase}.lecture-title,.material-title{font-size:18px;margin:7px 0}.lecture-desc,.material-desc{font-size:13px;color:var(--muted);margin-bottom:15px}.material-meta,.material-footer{display:flex;align-items:center;justify-content:space-between}.material-icon{display:grid;place-items:center;width:45px;height:45px;border-radius:10px;background:#fff0f0;color:#d33}.material-footer{border-top:1px solid var(--line);padding-top:14px;margin-top:auto}.login-wrapper{min-height:calc(100vh - 150px);display:grid;place-items:center}.login-card{width:min(400px,100%)}.form-group{margin-bottom:17px}.form-group label{display:block;font-size:13px;font-weight:700;margin-bottom:6px}.alert{padding:12px 15px;border-radius:10px;margin-bottom:18px}.alert-success{background:#e8f8f2;color:#087450}.alert-danger{background:#fff0f0;color:#a21d1d}.admin-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:30px}.admin-grid{display:grid;gap:24px}.table-responsive{overflow-x:auto}table{width:100%;border-collapse:collapse}th,td{padding:13px 15px;border-bottom:1px solid var(--line);text-align:left}th{background:#f7f6fa;font-size:13px}.action-buttons{display:flex;gap:7px}.modal{position:fixed;inset:0;background:rgba(20,15,30,.5);display:grid;place-items:center;z-index:1000;opacity:0;pointer-events:none}.modal.active{opacity:1;pointer-events:auto}.modal-content{position:relative;background:#fff;border-radius:18px;padding:28px;width:min(600px,calc(100% - 30px));max-height:90vh;overflow:auto}.modal-close{position:absolute;right:20px;top:20px;border:0;background:transparent}
@media(max-width:900px){.header-search-form{display:none}.site-nav{gap:18px;margin-left:5px}.hero-shell{grid-template-columns:1fr;gap:35px;padding-block:55px}.study-card{max-width:520px;transform:none}.resource-grid{grid-template-columns:repeat(2,1fr)}.player-wrapper{grid-template-columns:1fr}.subject-grid{grid-template-columns:1fr}.study-cta{align-items:flex-start}.footer-grid{grid-template-columns:1fr auto}.copyright{grid-column:1/-1}.search-layout{grid-template-columns:1fr}.search-filters{position:static}.filter-group{display:flex;align-items:center;gap:6px;overflow-x:auto}.filter-group h3{min-width:max-content;margin:0 5px 0 0}.filter-option{white-space:nowrap}.search-card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:680px){.container{width:min(100% - 28px,1180px)}.header-container{height:64px}.menu-toggle{display:block;margin-left:auto}.site-nav{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);padding:12px 14px;box-shadow:0 12px 25px rgba(0,0,0,.08);margin:0;flex-direction:column;align-items:stretch;gap:0}.site-nav.open{display:flex}.site-nav a{padding:12px}.site-nav a.active:after{display:none}.header-actions{display:none}.hero-shell{min-height:auto;padding-block:45px}.hero-copy h1{font-size:39px}.hero-copy>p{font-size:16px}.hero-search{padding-left:13px}.hero-search button{padding:11px 14px}.popular-searches{line-height:1.9}.study-card{padding:22px}.subject-section,.content-section{padding-top:50px}.section-heading{align-items:flex-start;flex-direction:column}.section-heading h2{font-size:26px}.view-all{align-self:flex-start}.resource-grid,.grid-3{grid-template-columns:1fr}.results-banner{align-items:flex-start;flex-direction:column;gap:8px}.materials-wrap{margin-top:55px;padding-bottom:55px}.player-panel{padding:16px;margin-top:45px}.player-panel>h2{font-size:20px}.study-cta{margin-block:50px;padding:27px 22px;flex-direction:column}.study-cta h2{font-size:25px}.footer-grid{grid-template-columns:1fr;gap:24px}.footer-links{flex-wrap:wrap}.copyright{grid-column:auto}.filter-bar{align-items:stretch;flex-direction:column}.subject-tabs{overflow-x:auto;flex-wrap:nowrap}.tab-btn{white-space:nowrap}.search-form{max-width:none}.admin-header{align-items:flex-start;flex-direction:column;gap:14px}.material-footer{align-items:flex-start;gap:10px;flex-direction:column}.search-page-head{padding:35px 0}.search-page-head h1{font-size:30px}.results-search{padding-left:12px}.results-search button{padding-inline:14px}.search-content{padding-top:25px}.search-filters{padding:14px}.filter-title{padding-bottom:10px}.search-card-grid{grid-template-columns:1fr}.result-summary{align-items:flex-start;flex-direction:column;gap:9px}.result-summary h2{font-size:22px}}
@media(max-width:390px){.hero-copy h1{font-size:34px}.hero-search input::placeholder{color:transparent}.study-stats{grid-template-columns:1fr}.logo{font-size:18px}.logo-mark{width:31px;height:31px}}

/* Expanded student experience */
body{font-size:16px}.container{width:min(1280px,calc(100% - 48px))}.search-page-head{padding:55px 0}.search-page-head h1{font-size:44px}.results-search{max-width:850px}.search-content{padding-top:48px}.search-layout{grid-template-columns:260px 1fr;gap:38px}.search-filters{padding:22px}.filter-option{min-height:44px;font-size:14px}.filter-option span i{width:24px;text-align:center}.search-card-grid{gap:24px}.search-resource-card{border-radius:19px}.search-card-image{aspect-ratio:16/8.5}.search-card-body{padding:22px}.search-card-body h3{font-size:20px}.search-card-body p{font-size:14px}.search-card-file{height:165px}.mobile-filter-toggle{display:none;width:100%;align-items:center;gap:10px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:13px 15px;color:var(--ink);font-weight:700;margin-bottom:15px;cursor:pointer}.mobile-filter-toggle>i{color:var(--primary)}.mobile-filter-toggle strong{display:grid;place-items:center;margin-left:auto;min-width:23px;height:23px;background:var(--primary);color:#fff;border-radius:99px;font-size:11px}
.inner-hero{background:linear-gradient(120deg,#f4efff,#f4faff);border-bottom:1px solid var(--line);padding:85px 0}.inner-hero h1{font-size:clamp(42px,5vw,66px);margin:20px 0 16px}.inner-hero h1 span{color:var(--primary)}.inner-hero p{max-width:720px;color:var(--muted);font-size:19px}.subject-detail-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;padding-block:70px}.subject-detail-card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:30px;box-shadow:0 8px 28px rgba(30,20,55,.04)}.subject-detail-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}.detail-icon{display:grid;place-items:center;width:58px;height:58px;border-radius:17px;background:var(--primary-soft);color:var(--primary);font-size:24px}.subject-detail-card.physics .detail-icon{background:#e8f0ff;color:var(--blue)}.subject-detail-card.chemistry .detail-icon{background:#e2f7ef;color:var(--green)}.subject-detail-card.mathematics .detail-icon{background:#fff0d5;color:var(--orange)}.subject-detail-card h2{font-size:28px;margin:22px 0 8px}.subject-detail-card>p{color:var(--muted);min-height:52px}.subject-counts{display:flex;gap:10px;margin:22px 0}.subject-counts span{flex:1;background:#f7f6fa;border-radius:11px;padding:10px;font-size:12px;color:var(--muted)}.subject-counts strong{display:block;color:var(--ink);font-size:19px}.subject-detail-card ul{list-style:none;border-top:1px solid var(--line);padding:19px 0;display:grid;gap:10px}.subject-detail-card li{font-size:14px;color:var(--muted)}.subject-detail-card li i{color:var(--primary);margin-right:8px}.subject-detail-card .btn{width:100%}.simple-cta{display:flex;align-items:center;gap:20px;background:#21183c;color:#fff;border-radius:22px;padding:32px 38px;margin-bottom:75px}.simple-cta>i{display:grid;place-items:center;width:55px;height:55px;border-radius:16px;background:rgba(255,255,255,.1);font-size:21px}.simple-cta h2{font-size:24px}.simple-cta p{font-size:14px;color:#c9c1da}.simple-cta .btn{margin-left:auto;white-space:nowrap}
.guide-steps{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;padding-block:70px}.guide-steps article{position:relative;background:#fff;border:1px solid var(--line);border-radius:21px;padding:30px}.step-number{position:absolute;right:25px;top:20px;font:800 42px var(--font-heading);color:#eeeaf4}.guide-steps h2{font-size:25px;margin:20px 0 8px}.guide-steps article>p{color:var(--muted)}.tip{display:flex;align-items:flex-start;gap:10px;background:var(--primary-soft);border-radius:12px;padding:13px;margin-top:20px;color:var(--primary);font-size:13px}.tip i{margin-top:4px}.weekly-plan{background:#fff;border:1px solid var(--line);border-radius:22px;padding:35px;margin-bottom:75px}.weekly-plan h2{font-size:30px;margin-top:6px}.plan-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:25px 0}.plan-grid span{background:#f7f6fa;border-radius:13px;padding:16px;color:var(--muted);font-size:13px}.plan-grid b{display:block;color:var(--ink);font-size:15px;margin-bottom:4px}
.about-values{display:grid;grid-template-columns:.75fr 1.25fr;gap:70px;align-items:center;padding-block:75px}.about-values>div:first-child h2{font-size:42px;margin:12px 0 15px}.about-values>div:first-child p{color:var(--muted);margin-bottom:22px}.value-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.value-grid article{background:#fff;border:1px solid var(--line);border-radius:17px;padding:24px}.value-grid article>i{color:var(--primary);font-size:22px}.value-grid h3{font-size:18px;margin:14px 0 5px}.value-grid p{font-size:13px;color:var(--muted)}
@media(max-width:1050px){.header-container{gap:18px}.site-nav{gap:15px;margin-left:5px}.site-nav a{font-size:13px}.header-search-form{width:175px}.subject-detail-grid{grid-template-columns:1fr}.subject-detail-card>p{min-height:0}.subject-detail-card ul{grid-template-columns:repeat(2,1fr)}}
@media(max-width:900px){.container{width:min(100% - 36px,1280px)}.mobile-filter-toggle{display:flex}.search-layout{display:block}.search-filters{display:none;position:static;margin-bottom:22px}.search-filters.mobile-open{display:block}.filter-group{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));overflow:visible;gap:6px}.filter-group h3{grid-column:1/-1}.filter-option{white-space:normal}.about-values{grid-template-columns:1fr;gap:35px}.plan-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:680px){.container{width:min(100% - 28px,1280px)}.search-page-head{padding:36px 0}.search-page-head h1{font-size:32px}.search-card-body h3{font-size:18px}.filter-group{grid-template-columns:1fr}.inner-hero{padding:55px 0}.inner-hero h1{font-size:38px}.inner-hero p{font-size:16px}.subject-detail-grid{padding-block:45px}.subject-detail-card{padding:23px}.subject-detail-card ul{grid-template-columns:1fr}.simple-cta{align-items:flex-start;flex-direction:column;padding:25px}.simple-cta .btn{margin-left:0;width:100%}.guide-steps{grid-template-columns:1fr;padding-block:45px}.guide-steps article{padding:24px}.weekly-plan{padding:24px}.plan-grid{grid-template-columns:1fr}.about-values{padding-block:48px}.about-values>div:first-child h2{font-size:34px}.value-grid{grid-template-columns:1fr}.footer-links{gap:15px}}