:root{
  --ink:#183239;--muted:#63767a;--paper:#f4f7f5;--surface:#fff;--line:#d8e1df;
  --nav:#153e46;--nav-2:#0e2f35;--red:#d9482b;--teal:#087f8c;--gold:#d99b21;
  --green:#2f7d55;--brown:#6f5a3a;--blue:#276aa3;--danger:#bd3328;
  --shadow:0 8px 24px rgba(19,54,61,.08);--radius:8px;--header-h:70px;
  --font:'Noto Sans SC','Noto Sans JP',system-ui,sans-serif;
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--font);line-height:1.65}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button{cursor:pointer}img{max-width:100%}svg{width:1.15em;height:1.15em}.leaflet-container svg{width:100%;height:100%;max-width:none;max-height:none}.leaflet-overlay-pane{z-index:500!important}.leaflet-marker-pane{z-index:600!important}h1,h2,h3,p{margin-top:0}h1,h2,h3{line-height:1.25;letter-spacing:0}
.site-header{position:sticky;top:0;z-index:1100;height:var(--header-h);background:var(--nav);color:#fff;border-bottom:4px solid var(--gold)}
.nav-shell{height:100%;max-width:1480px;margin:auto;padding:0 22px;display:flex;align-items:center;gap:18px}.brand{display:flex;align-items:center;gap:10px;min-width:max-content}.brand-mark{width:46px;height:38px;display:grid;place-items:center;background:var(--red);font-weight:800;letter-spacing:.06em}.brand strong{display:block;font-size:.96rem}.brand small{display:block;font-size:.58rem;opacity:.66;letter-spacing:.08em}.primary-nav{display:flex;align-items:center;gap:2px;flex:1;min-width:0}.nav-item{height:42px;padding:0 10px;display:flex;align-items:center;gap:6px;color:rgba(255,255,255,.72);font-size:.8rem;white-space:nowrap;border-bottom:3px solid transparent}.nav-item:hover,.nav-item.active{color:#fff;background:rgba(255,255,255,.07);border-bottom-color:var(--gold)}.nav-item svg{flex:none}.header-actions{margin-left:auto;display:flex;align-items:center;gap:10px}.language-switch{display:flex;padding:3px;background:var(--nav-2);border:1px solid rgba(255,255,255,.18);border-radius:6px}.language-switch a{width:28px;height:26px;display:grid;place-items:center;font-size:.75rem;border-radius:4px;color:rgba(255,255,255,.6)}.language-switch a.active{background:#fff;color:var(--nav);font-weight:700}.profile-chip{display:flex;align-items:center;gap:8px;max-width:200px}.avatar{width:34px;height:34px;border-radius:50%;background:var(--gold);color:#2b2618;display:grid;place-items:center;font-weight:800}.profile-copy{min-width:0}.profile-copy strong,.profile-copy small{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.profile-copy strong{font-size:.78rem}.profile-copy small{font-size:.64rem;opacity:.62}.logout-button{height:36px;padding:0 11px;display:flex;align-items:center;gap:6px;border:1px solid rgba(255,255,255,.32);border-radius:6px;font-size:.75rem}.logout-button:hover{background:var(--red);border-color:var(--red)}.icon-button{border:0;background:transparent;color:inherit;padding:8px;display:grid;place-items:center}.nav-toggle{display:none}
.public-login,.public-register{height:34px;padding:0 13px;display:inline-flex;align-items:center;border-radius:5px;font-size:.76rem;font-weight:700}.public-login{border:1px solid rgba(255,255,255,.35)}.public-register{background:var(--red);color:#fff}
.main-content{min-height:calc(100vh - 150px)}.page-shell{max-width:1280px;margin:auto;padding:30px 22px 54px}.page-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:22px}.eyebrow{margin:0 0 6px;color:var(--red);font-size:.72rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase}.page-heading h1{font-size:clamp(1.55rem,3vw,2.35rem);margin-bottom:7px}.lead{max-width:780px;color:var(--muted);font-size:.94rem;margin:0}.heading-actions{display:flex;gap:8px;flex-wrap:wrap}
.focus-band{background:var(--surface);border-top:5px solid var(--red);border-bottom:1px solid var(--line);padding:28px;display:grid;grid-template-columns:minmax(0,1.5fr) minmax(260px,.7fr);gap:26px;margin-bottom:24px}.focus-band h1{font-size:clamp(1.6rem,3.5vw,2.7rem);margin-bottom:10px}.focus-band .summary{color:var(--muted);max-width:740px}.focus-actions{display:flex;gap:9px;flex-wrap:wrap;margin-top:18px}.focus-panel{border-left:1px solid var(--line);padding-left:24px;display:grid;align-content:center;gap:10px}.focus-stat{display:flex;justify-content:space-between;gap:10px;padding:8px 0;border-bottom:1px solid var(--line);font-size:.82rem}.focus-stat strong{font-size:1rem;color:var(--red)}
.btn{min-height:40px;padding:8px 16px;border:1px solid transparent;border-radius:6px;display:inline-flex;align-items:center;justify-content:center;gap:7px;font-weight:700;font-size:.84rem}.btn-primary{background:var(--red);color:#fff}.btn-secondary{background:var(--nav);color:#fff}.btn-outline{background:#fff;border-color:var(--line);color:var(--ink)}.btn-teal{background:var(--teal);color:#fff}.btn:hover{filter:brightness(.96);transform:translateY(-1px)}.btn-sm{min-height:34px;padding:6px 11px;font-size:.75rem}.btn-block{width:100%}.btn:disabled{opacity:.55;cursor:not-allowed;transform:none}
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:24px}.metric{background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--teal);padding:16px}.metric:nth-child(2){border-left-color:var(--gold)}.metric:nth-child(3){border-left-color:var(--red)}.metric:nth-child(4){border-left-color:var(--green)}.metric span{display:block;color:var(--muted);font-size:.76rem}.metric strong{display:block;font-size:1.65rem;line-height:1.2;margin:5px 0}.metric small{color:var(--muted);font-size:.69rem}
.subject-grid,.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:26px}.subject-tile,.feature-tile{background:var(--surface);border:1px solid var(--line);padding:20px;position:relative;overflow:hidden}.subject-tile{border-top:5px solid var(--red)}.subject-tile.geo{border-top-color:var(--teal)}.subject-tile.his{border-top-color:var(--brown)}.tile-icon{width:42px;height:42px;display:grid;place-items:center;background:#eef3f2;color:var(--nav);margin-bottom:16px}.subject-tile h2,.feature-tile h3{font-size:1.04rem;margin-bottom:7px}.subject-tile p,.feature-tile p{font-size:.8rem;color:var(--muted);min-height:48px}.tile-meta{display:flex;justify-content:space-between;gap:10px;font-size:.72rem;color:var(--muted);margin:12px 0}.progress{height:7px;background:#e8eeec;overflow:hidden}.progress>span{display:block;height:100%;background:var(--teal)}
.content-grid{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(280px,.75fr);gap:18px}.panel{background:var(--surface);border:1px solid var(--line);padding:20px}.panel-title{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:15px}.panel-title h2,.panel-title h3{font-size:1rem;margin:0}.panel-title svg{color:var(--red)}.list{display:grid;gap:9px}.list-row{display:flex;align-items:flex-start;gap:11px;padding:10px 0;border-bottom:1px solid var(--line)}.list-row:last-child{border-bottom:0}.list-index{width:28px;height:28px;display:grid;place-items:center;background:#edf2f1;color:var(--nav);font-weight:800;font-size:.74rem;flex:none}.list-copy{min-width:0;flex:1}.list-copy strong{display:block;font-size:.84rem}.list-copy small{display:block;color:var(--muted);font-size:.72rem;margin-top:2px}
.syllabus-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.unit-card{background:#fff;border:1px solid var(--line);padding:18px;border-left:4px solid var(--teal)}.unit-code{font-size:.68rem;color:var(--red);font-weight:800;letter-spacing:.08em}.unit-card h2{font-size:1rem;margin:5px 0}.unit-card p{font-size:.8rem;color:var(--muted)}.skill-tags{display:flex;gap:6px;flex-wrap:wrap;margin:12px 0}.tag{display:inline-flex;align-items:center;gap:4px;padding:3px 8px;border-radius:4px;background:#eef3f2;color:#36575d;font-size:.68rem}.unit-actions{display:flex;gap:7px;flex-wrap:wrap}
.tabs{display:flex;gap:5px;overflow-x:auto;padding-bottom:5px;margin-bottom:16px;scrollbar-width:thin}.tab{white-space:nowrap;border:1px solid var(--line);background:#fff;padding:8px 13px;border-radius:5px;font-size:.78rem;font-weight:700}.tab.active{background:var(--nav);color:#fff;border-color:var(--nav)}
.map-type-bar{display:flex;gap:7px;flex-wrap:wrap;margin-bottom:12px}.map-type-bar .tab{display:inline-flex;align-items:center;gap:6px}.map-workspace{display:grid;grid-template-columns:280px minmax(0,1fr);min-height:620px;background:#fff;border:1px solid var(--line)}.map-sidebar{padding:18px;border-right:1px solid var(--line);overflow:auto}.map-visual-stack{min-width:0;position:relative}.map-canvas{min-height:620px}.leaflet-container{background:#dceff1}.admin-map{min-height:620px;height:100%;padding:22px;background:#f7faf9;display:flex;flex-direction:column;align-items:center;justify-content:center}.admin-map-head{width:100%;display:flex;align-items:baseline;justify-content:space-between;gap:10px;margin-bottom:12px;color:var(--ink)}.admin-map-head strong{font-size:1rem}.admin-map-head span{font-size:.7rem;color:var(--muted)}.admin-map img{display:block;width:100%;height:auto;max-height:530px;object-fit:contain;background:#dceff1;border:1px solid var(--line)}.admin-map small{width:100%;display:block;color:var(--muted);font-size:.68rem;margin-top:10px}.study-base-canvas{position:absolute;inset:0;width:100%;height:100%;z-index:350;pointer-events:none}.continent-label{color:#597477;font-family:var(--font);font-size:.72rem;font-weight:700;text-align:center;text-shadow:0 1px #fff}.study-pin{width:16px;height:16px;border-radius:50%;border:3px solid #fff;box-shadow:0 2px 7px rgba(15,47,53,.45)}.map-filter{width:100%;display:flex;align-items:center;gap:8px;padding:9px;border:0;border-bottom:1px solid var(--line);background:#fff;text-align:left;font-size:.78rem}.map-filter.active{color:var(--red);font-weight:800;background:#fff6f3}.map-legend{margin-top:18px;font-size:.72rem;color:var(--muted)}.leaflet-popup-content{font-family:var(--font);line-height:1.55}.map-popup h3{font-size:.9rem;margin-bottom:5px}.map-popup p{font-size:.75rem;margin:0 0 5px}.map-popup strong{color:var(--red)}
.chart-stage{height:350px;position:relative}.data-toolbar{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}.insight-box{padding:16px;border-left:4px solid var(--gold);background:#fffaf0;margin-top:14px}.insight-box h3{font-size:.88rem}.insight-box p,.insight-box li{font-size:.78rem;color:var(--muted)}
.term-toolbar{display:grid;grid-template-columns:1fr 180px 180px;gap:9px;margin-bottom:15px}.term-list{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.term-card{background:#fff;border:1px solid var(--line);padding:16px}.term-head{display:flex;align-items:flex-start;justify-content:space-between;gap:10px}.term-ja{font-size:1.05rem;font-weight:800}.term-zh{font-size:.75rem;color:var(--red);margin-top:2px}.speak-button{width:36px;height:36px;border:1px solid var(--line);background:#fff;display:grid;place-items:center;border-radius:50%;color:var(--teal)}.term-card p{font-size:.78rem;color:var(--muted);margin:10px 0 0}
.exam-setup{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.exam-mode{position:relative;background:#fff;border:2px solid var(--line);padding:20px}.exam-mode input{position:absolute;opacity:0}.exam-mode:has(input:checked){border-color:var(--red);box-shadow:0 0 0 3px rgba(217,72,43,.1)}.exam-mode h2{font-size:1rem}.exam-mode p{font-size:.78rem;color:var(--muted)}.exam-toolbar{position:sticky;top:var(--header-h);z-index:900;background:var(--nav);color:#fff;padding:10px 18px;display:flex;align-items:center;justify-content:space-between;gap:14px}.timer{font-variant-numeric:tabular-nums;font-size:1.2rem;font-weight:800;color:#ffd66b}.question-block{background:#fff;border:1px solid var(--line);padding:22px;margin-bottom:14px}.question-meta{display:flex;align-items:center;gap:7px;flex-wrap:wrap;margin-bottom:10px}.question-stem{font-size:.98rem;font-weight:600;line-height:1.85}.option-list{display:grid;gap:8px;margin-top:14px}.option{display:flex;align-items:flex-start;gap:10px;border:1px solid var(--line);padding:11px;cursor:pointer}.option:has(input:checked){border-color:var(--teal);background:#f0fbfb}.option input{margin-top:5px}.option-letter{width:25px;height:25px;display:grid;place-items:center;background:#edf2f1;font-weight:800;flex:none}.material-box{background:#f7faf9;border-left:4px solid var(--blue);padding:14px;margin:12px 0;overflow:auto}.material-box table{width:100%;border-collapse:collapse;font-size:.74rem}.material-box th,.material-box td{border:1px solid var(--line);padding:7px;text-align:center}.mini-map{height:250px;min-width:280px}.result-score{font-size:3.5rem;font-weight:800;color:var(--red);line-height:1}.review-row{border-left:4px solid var(--green);padding:14px;background:#fff;margin-bottom:9px}.review-row.wrong{border-left-color:var(--danger)}
.auth-shell{min-height:calc(100vh - var(--header-h));display:grid;grid-template-columns:minmax(0,1fr) minmax(360px,500px);background:#fff}.auth-context{background:var(--nav);color:#fff;padding:clamp(34px,7vw,90px);display:flex;flex-direction:column;justify-content:center}.auth-context h1{font-size:clamp(2rem,4.5vw,4rem);max-width:760px}.auth-context p{max-width:650px;color:rgba(255,255,255,.72)}.auth-points{display:grid;gap:10px;margin-top:25px}.auth-point{display:flex;gap:10px;align-items:center;font-size:.82rem}.auth-point svg{color:#ffd66b}.auth-form-side{padding:clamp(24px,5vw,62px);display:flex;align-items:center}.auth-card{width:100%;max-width:440px;margin:auto}.auth-card h2{font-size:1.6rem}.auth-card>p{font-size:.82rem;color:var(--muted)}.form-group{margin-bottom:14px}.form-label{display:block;font-size:.76rem;font-weight:800;margin-bottom:5px}.form-input,.form-select{width:100%;min-height:44px;border:1px solid #bdccca;border-radius:6px;background:#fff;padding:9px 12px;color:var(--ink)}.form-input:focus,.form-select:focus{outline:0;border-color:var(--teal);box-shadow:0 0 0 3px rgba(8,127,140,.12)}.verification-row{display:grid;grid-template-columns:1fr 130px;gap:8px;align-items:start}.verification-row .form-group{margin-bottom:0}.verification-row .btn{height:44px;min-height:44px;align-self:start;margin-top:24px}.verification-hint{font-size:.7rem;color:var(--muted);margin:-5px 0 14px}.auth-message{padding:11px 13px;margin-bottom:14px;font-size:.78rem;border-left:4px solid var(--danger);background:#fff3f1;color:#8d281f}.auth-message.success{border-left-color:var(--green);background:#eff9f3;color:#235f40}.auth-switch{text-align:center;margin-top:16px!important}.auth-switch a{color:var(--red);font-weight:800}
.empty-state{text-align:center;padding:42px 20px;color:var(--muted)}.badge{display:inline-flex;padding:2px 7px;border-radius:4px;background:#edf2f1;color:#486268;font-size:.66rem;font-weight:700}.badge.red{background:#fff0ec;color:#a63b25}.badge.teal{background:#e8f8f8;color:#076c77}.notice{padding:13px 15px;border-left:4px solid var(--gold);background:#fffaf0;font-size:.8rem;margin-bottom:18px}.site-footer{background:#102f35;color:rgba(255,255,255,.7);padding:24px 22px}.footer-inner{max-width:1280px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:20px}.footer-inner strong,.footer-inner span{display:block}.footer-inner strong{color:#fff}.footer-inner span{font-size:.72rem;margin-top:3px}.footer-inner small{font-size:.68rem}
.home-hero{height:min(720px,calc(100vh - var(--header-h)));min-height:560px;position:relative;overflow:hidden;background:#dceff1}.home-map{position:absolute;inset:0}.home-shade{position:absolute;inset:0;background:linear-gradient(90deg,rgba(244,247,245,.98) 0%,rgba(244,247,245,.9) 39%,rgba(244,247,245,.18) 72%,rgba(244,247,245,.05) 100%);pointer-events:none}.home-hero-inner{position:relative;z-index:700;max-width:1280px;height:100%;margin:auto;padding:clamp(44px,7vw,92px) 22px;display:flex;flex-direction:column;justify-content:center;align-items:flex-start}.home-hero h1{max-width:760px;font-size:clamp(2.15rem,5vw,4.5rem);margin-bottom:18px}.home-hero p:not(.eyebrow){max-width:650px;color:#405d63;font-size:clamp(.92rem,1.5vw,1.08rem)}.home-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}.home-proof{display:flex;gap:28px;flex-wrap:wrap;margin-top:34px;padding-top:20px;border-top:1px solid rgba(24,50,57,.18)}.home-proof span{font-size:.72rem;color:var(--muted)}.home-proof strong{display:block;color:var(--ink);font-size:1.25rem}.home-section{padding:64px 22px;background:var(--paper)}.home-section-alt{background:#fff}.home-section-inner{max-width:1280px;margin:auto}.home-section .feature-grid{grid-template-columns:repeat(4,1fr);margin-bottom:0}
@media(max-width:1180px){.nav-toggle{display:grid}.primary-nav{display:none;position:absolute;top:var(--header-h);left:0;right:0;background:var(--nav);padding:10px 18px 18px;grid-template-columns:repeat(4,1fr);box-shadow:var(--shadow)}.primary-nav.open{display:grid}.nav-item{justify-content:center}.profile-copy{display:none}.subject-grid,.feature-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:800px){:root{--header-h:62px}.nav-shell{padding:0 12px;gap:8px}.brand small{display:none}.brand-mark{width:42px;height:34px}.logout-button span{display:none}.logout-button{width:36px;padding:0;justify-content:center}.profile-chip{display:none}.language-switch a{width:25px}.primary-nav{grid-template-columns:repeat(2,1fr);max-height:calc(100vh - var(--header-h));overflow:auto}.page-shell{padding:20px 14px 42px}.page-heading{align-items:flex-start;flex-direction:column}.focus-band{grid-template-columns:1fr;padding:20px}.focus-panel{border-left:0;border-top:1px solid var(--line);padding:16px 0 0}.metric-grid{grid-template-columns:repeat(2,1fr)}.content-grid{grid-template-columns:1fr}.syllabus-grid{grid-template-columns:1fr}.map-workspace{grid-template-columns:1fr;min-height:0}.map-sidebar{border-right:0;border-bottom:1px solid var(--line);display:flex;overflow-x:auto;padding:10px}.map-filter{min-width:max-content;border-bottom:0;border-right:1px solid var(--line)}.map-legend{display:none}.map-canvas{min-height:520px}.admin-map{min-height:520px;padding:12px}.admin-map-head{display:block}.admin-map-head span{display:block;margin-top:3px}.term-toolbar{grid-template-columns:1fr 1fr}.term-toolbar input{grid-column:1/-1}.term-list{grid-template-columns:1fr}.exam-setup{grid-template-columns:1fr}.auth-shell{grid-template-columns:1fr}.auth-context{padding:28px 20px}.auth-context h1{font-size:1.8rem}.auth-context p{margin-bottom:0}.auth-points{grid-template-columns:1fr 1fr;margin-top:16px}.auth-form-side{padding:28px 18px 48px}.footer-inner{align-items:flex-start;flex-direction:column}.home-hero{height:min(680px,calc(100vh - var(--header-h) - 80px));min-height:560px}.home-shade{background:rgba(244,247,245,.9)}.home-hero-inner{padding:40px 20px}.home-hero h1{font-size:2.2rem}.home-proof{gap:18px}.home-section{padding:42px 14px}.home-section .feature-grid{grid-template-columns:1fr 1fr}}

/* Japanese speech controls */
.terminology-page .term-toolbar{grid-template-columns:minmax(220px,1fr) 180px 180px auto;align-items:center}
.terminology-page .term-toolbar .tts-status{grid-column:1/-1;font-size:.76rem;color:var(--muted);min-height:1.2em}
.terminology-page .tts-status[data-state="speaking"]{color:var(--teal);font-weight:700}
.terminology-page .tts-status[data-state="error"]{color:#b42318;font-weight:700}
.term-audio-row{display:grid;grid-template-columns:minmax(0,1fr) 32px;align-items:start;gap:10px;margin-top:10px;padding-top:10px;border-top:1px solid var(--line)}
.term-audio-row p{margin:0;line-height:1.7}
.term-audio-row .speak-button.small{width:32px;height:32px}
.term-example{background:#f7faf8;margin-left:-8px;margin-right:-8px;padding:10px 8px 0}
.speak-button{cursor:pointer;transition:background .18s,color .18s,border-color .18s,transform .18s}
.speak-button:hover{border-color:var(--teal);transform:translateY(-1px)}
.speak-button.speaking{color:#fff;background:var(--teal);border-color:var(--teal)}
.speak-button.loading{cursor:wait;color:transparent;position:relative}
.speak-button.loading::after{content:'';position:absolute;width:15px;height:15px;border:2px solid var(--teal);border-right-color:transparent;border-radius:50%;animation:eju-tts-spin .7s linear infinite}
@keyframes eju-tts-spin{to{transform:rotate(360deg)}}
@media(max-width:800px){.terminology-page .term-toolbar{grid-template-columns:1fr 1fr}.terminology-page .term-toolbar input,.terminology-page .term-toolbar .tts-status{grid-column:1/-1}.terminology-page .term-stop{width:100%}.term-card{padding:14px}.term-audio-row{grid-template-columns:minmax(0,1fr) 36px}.term-audio-row .speak-button.small{width:36px;height:36px}}
@media(max-width:480px){.terminology-page .term-toolbar{grid-template-columns:1fr}.terminology-page .term-toolbar input,.terminology-page .term-toolbar .tts-status{grid-column:auto}.terminology-page .term-stop{min-height:44px}}
@media(max-width:540px){.brand strong{font-size:.8rem}.header-actions{gap:5px}.subject-grid,.feature-grid{grid-template-columns:1fr}.metric-grid{gap:8px}.metric{padding:12px}.metric strong{font-size:1.35rem}.focus-actions .btn,.heading-actions .btn{flex:1}.page-heading h1{font-size:1.55rem}.verification-row{grid-template-columns:1fr}.verification-row .btn{width:100%}.auth-points{grid-template-columns:1fr}.chart-stage{height:280px}.question-block{padding:16px}.exam-toolbar{top:var(--header-h);padding:8px 12px}.exam-toolbar .btn span{display:none}}
.hidden{display:none!important}.map-lesson-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:18px}.map-lesson{background:#fff;border:1px solid var(--line);border-top:4px solid var(--teal);padding:16px}.map-lesson h2{font-size:.95rem;margin:10px 0 6px}.map-lesson p{font-size:.76rem;color:var(--muted);min-height:62px}.map-lesson strong{font-size:.7rem;color:var(--red)}.material-map{height:280px;min-width:260px;margin:10px 0;border:1px solid var(--line);background:#dceff1}.material-source{display:block;color:var(--muted);font-size:.68rem;line-height:1.5}
@media(max-width:900px){.map-lesson-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:540px){.map-lesson-grid{grid-template-columns:1fr}.map-lesson p{min-height:0}}

/* EJU Science visual system */
.science-site{--ink:#17323a;--muted:#62767a;--paper:#f3f7f6;--line:#d5e1df;--nav:#123c48;--nav-2:#0d2d36;--red:#c54933;--teal:#176b87;--gold:#f0b43a;--green:#2d7a55}
.science-site .site-header{border-bottom-color:#65c7b0}.science-site .brand-mark{background:#f0b43a;color:#17323a}.science-site .public-register,.science-site .btn-primary{background:#c54933;border-color:#c54933}.science-site .eyebrow{color:#c54933}.membership-chip{display:inline-flex;align-items:center;min-height:30px;padding:4px 9px;border-radius:5px;font-size:.68rem;font-weight:800;white-space:nowrap}.membership-chip.is-paid{background:#dff5e9;color:#1b6843}.membership-chip.is-pending{background:#fff0cf;color:#76520b}
.science-hero{position:relative;min-height:650px;height:min(760px,calc(100vh - var(--header-h)));display:flex;align-items:flex-end;overflow:hidden;background:#143b44}.science-hero>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center 42%}.science-hero-shade{position:absolute;inset:0;background:linear-gradient(90deg,rgba(10,38,46,.94) 0%,rgba(10,38,46,.72) 48%,rgba(10,38,46,.18) 78%),linear-gradient(0deg,rgba(10,38,46,.82) 0%,transparent 48%)}.science-hero-inner{position:relative;z-index:1;width:min(1280px,100%);margin:0 auto;padding:84px 24px 64px;color:#fff}.science-hero-inner>p{max-width:720px;color:rgba(255,255,255,.86);font-size:1.02rem}.science-hero h1{max-width:900px;font-size:clamp(2.4rem,5vw,4.8rem);line-height:1.08;margin-bottom:20px}.science-hero .eyebrow{color:#8fe1cf}.btn-glass{color:#fff;border-color:rgba(255,255,255,.55);background:rgba(255,255,255,.08);backdrop-filter:blur(6px)}.science-proof{display:flex;gap:38px;margin-top:35px}.science-proof span{display:grid;font-size:.73rem;color:rgba(255,255,255,.72)}.science-proof strong{font-size:1.45rem;color:#fff}.science-subject{position:relative;overflow:hidden}.science-subject:before{content:"";position:absolute;left:0;top:0;bottom:0;width:5px}.science-subject.physics:before{background:#176b87}.science-subject.chemistry:before{background:#c54933}.science-subject.biology:before{background:#2d7a55}.science-subject h3{font-size:1.35rem}.feature-tile>svg{width:32px;height:32px;color:#176b87;margin-bottom:13px}.exam-story{background:#163d46;color:#fff}.exam-story .eyebrow{color:#8fe1cf}.exam-story h2{font-size:clamp(1.7rem,3.4vw,3rem)}.exam-story p{color:rgba(255,255,255,.72)}.exam-story-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:center}.exam-sequence{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid rgba(255,255,255,.2);border-left:1px solid rgba(255,255,255,.2)}.exam-sequence span{min-height:120px;padding:22px;display:flex;flex-direction:column;border-right:1px solid rgba(255,255,255,.2);border-bottom:1px solid rgba(255,255,255,.2)}.exam-sequence b{color:#f0b43a;font-size:1.35rem}
.membership-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(360px,.8fr);gap:22px}.plan-panel{background:#123c48;color:#fff;padding:30px;border-top:5px solid #f0b43a}.plan-price{font-size:2.7rem;font-weight:800;margin:18px 0}.plan-price small{font-size:.85rem;font-weight:500;color:rgba(255,255,255,.65)}.plan-features{display:grid;grid-template-columns:1fr 1fr;gap:9px;margin:20px 0}.plan-features span:before{content:"✓";color:#8fe1cf;margin-right:7px}.pay-methods{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:10px 0 14px}.pay-method{padding:12px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.2);border-radius:6px}.pay-method.active{border-color:#f0b43a;background:rgba(240,180,58,.12)}.order-table,.admin-table{width:100%;border-collapse:collapse;font-size:.78rem}.order-table th,.order-table td,.admin-table th,.admin-table td{text-align:left;padding:10px;border-bottom:1px solid var(--line);vertical-align:top}.status-paid{color:var(--green);font-weight:700}.status-pending{color:#976e16;font-weight:700}.admin-layout{max-width:1440px;margin:auto;padding:26px 22px}.admin-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:18px}.admin-table-wrap{overflow:auto;background:#fff;border:1px solid var(--line)}
.tool-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.tool-card{background:#fff;border:1px solid var(--line);border-top:4px solid var(--teal);padding:20px}.tool-card h2{font-size:1.05rem}.tool-controls{display:grid;gap:11px}.tool-output{margin-top:14px;padding:13px;background:#edf5f3;border-left:4px solid var(--green);font-size:.82rem}.tool-canvas{width:100%;height:180px;background:#f7faf9;border:1px solid var(--line);margin:12px 0}.subject-picker{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.subject-choice{display:block;padding:18px;border:2px solid var(--line);background:#fff}.subject-choice:has(input:checked){border-color:var(--teal);background:#edf7f5}.subject-choice input{margin-right:8px}.network-links{display:flex;gap:12px;flex-wrap:wrap;font-size:.7rem}
@media(max-width:1050px){.science-hero{min-height:590px}.science-hero h1{font-size:3.1rem}.tool-grid{grid-template-columns:1fr 1fr}.membership-layout,.exam-story-grid{grid-template-columns:1fr}.profile-chip{display:none}}
@media(max-width:760px){.science-hero{height:auto;min-height:590px;align-items:flex-end}.science-hero>img{object-position:63% center}.science-hero-shade{background:linear-gradient(0deg,rgba(10,38,46,.96) 0%,rgba(10,38,46,.72) 68%,rgba(10,38,46,.3))}.science-hero-inner{padding:90px 18px 38px}.science-hero h1{font-size:2.25rem}.science-hero-inner>p{font-size:.9rem}.science-proof{gap:18px}.science-proof strong{font-size:1.15rem}.tool-grid,.subject-picker{grid-template-columns:1fr}.plan-features{grid-template-columns:1fr}.membership-layout{display:block}.membership-layout>*{margin-bottom:16px}.exam-sequence span{min-height:98px;padding:15px}.science-auth .auth-context{padding-top:30px}.membership-chip{display:none}}
@media(max-width:430px){.science-proof{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.science-proof span{font-size:.62rem}.science-hero .home-actions{display:grid}.science-hero .home-actions .btn{width:100%}.exam-sequence{grid-template-columns:1fr}.pay-methods{grid-template-columns:1fr}.header-actions .public-login{display:none}}