@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;450;500;550;600;650;700&family=Manrope:wght@400;500;600;650;700;750;800&display=swap');
:root{--ink:#172435;--muted:#657080;--blue:#254deb;--line:#e2e6ec;--paper:#fff;--soft:#f5f7fb;--radius:20px}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:35px}body{margin:0;color:var(--ink);background:var(--paper);font-family:'DM Sans',Arial,sans-serif;font-size:16px;line-height:1.55}a{color:inherit;text-decoration:none}button,input{font:inherit}button,a,input{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button{cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #fa953f;outline-offset:5px}h1,h2,h3,p{margin:0}h1,h2,h3{font-family:'Manrope',Arial,sans-serif;line-height:1.12;letter-spacing:-.045em}h1{font-weight:750}h2{font-size:clamp(2rem,3.2vw,3rem);font-weight:650}h3{font-weight:700}em{font-style:normal;color:var(--blue)}.header{max-width:1360px;margin:auto;height:112px;display:flex;align-items:center;justify-content:space-between;padding:0 60px;border-bottom:1px solid var(--line);gap:30px}.brand{display:inline-flex;gap:10px;align-items:center;font-family:'Manrope',Arial,sans-serif;font-size:34px;line-height:.95;font-weight:800;letter-spacing:-1.8px}.brand-symbol{display:flex;align-items:center;justify-content:center;background:var(--blue);color:white;width:42px;height:46px;border-radius:13px 13px 13px 3px;font-size:41px;padding-bottom:8px;letter-spacing:-4px;padding-right:3px}.brand-small{display:block;font-family:'DM Sans',Arial,sans-serif;font-size:9px;letter-spacing:2.9px;margin-top:8px;font-weight:600}.header nav{display:flex;gap:35px;font-size:14px;font-weight:550}.header nav a:hover{color:var(--blue)}.button{display:inline-flex;align-items:center;justify-content:space-between;gap:38px;min-height:57px;padding:16px 25px;border:0;border-radius:9px;font-size:15px;font-weight:600;transition:transform .2s,background .2s}.button:hover{transform:translateY(-3px)}.button span{font-size:21px;line-height:1}.small{min-height:46px;padding:12px 19px;gap:26px}.dark{background:var(--ink);color:white}.blue{background:var(--blue);color:white}.blue:hover{background:#183dcc}.white{background:white;color:var(--ink)}.hero{max-width:1360px;margin:auto;display:grid;grid-template-columns:1.08fr 1fr;gap:48px;padding:60px 60px 58px;align-items:center}.eyebrow{font-size:12px;font-weight:650;letter-spacing:1.8px;display:flex;gap:10px;align-items:center}.eyebrow>span{width:7px;height:7px;background:var(--blue);border-radius:50%}.hero h1{font-size:clamp(3rem,4.4vw,4.7rem);line-height:1.08;margin:26px 0 24px;letter-spacing:-.058em}.hero-copy>p{max-width:400px;color:var(--muted);font-size:17px;line-height:1.7;margin-bottom:28px}.hero-note{margin-top:40px;display:flex;gap:13px;align-items:center;font-size:12px;color:var(--muted);line-height:1.5}.mini-mark{font-size:33px;color:var(--blue)}.hero-visual{position:relative;min-width:0;height:495px;border-radius:20px;isolation:isolate;background:#d4e6e5}.hero-visual img{width:100%;height:100%;object-fit:cover;object-position:51% center;border-radius:20px}.photo-label{position:absolute;top:22px;left:22px;background:white;border-radius:5px;padding:9px 13px;font-size:10px;letter-spacing:1.5px;font-weight:600}.photo-caption{position:absolute;bottom:23px;left:-25px;display:flex;align-items:center;gap:14px;background:white;border-radius:13px;padding:18px 25px 18px 16px;box-shadow:0 10px 45px #16284018;font-size:15px;line-height:1.45}.caption-icon{width:47px;height:47px;display:grid;place-items:center;color:var(--blue);background:#e9efff;border-radius:50%;font-size:26px}.photo-caption strong{font-weight:650}.vertical-word{position:absolute;right:-23px;top:45%;writing-mode:vertical-rl;font-size:10px;letter-spacing:2px;font-weight:600}.subject-strip{padding:23px 5%;display:flex;gap:35px;justify-content:center;align-items:center;background:var(--soft);font-size:14px;font-weight:500}.subject-strip i{font-style:normal;color:var(--blue);font-size:19px}.section{max-width:1360px;margin:auto;padding:90px 60px}.section-heading{display:flex;justify-content:space-between;align-items:end;gap:35px;margin-bottom:40px}.section-heading h2{margin-top:18px}.section-heading>p{max-width:325px;color:var(--muted);font-size:15px}.stage-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.stage-card{border-radius:16px;padding:25px 27px 28px;display:flex;flex-direction:column;transition:transform .22s;min-width:0}.stage-card:hover{transform:translateY(-6px)}.primary{background:#edf3dd}.secondary{background:#e7edff}.high{background:#fce9dd}.card-top{display:flex;justify-content:space-between;align-items:center}.stage-index{font-size:13px;font-weight:600}.round-arrow{border:1px solid #17243535;border-radius:50%;width:34px;height:34px;display:grid;place-items:center;font-size:23px}.stage-art{font-size:72px;font-weight:600;letter-spacing:-8px;line-height:1.5;padding:13px 0 15px;font-family:'Manrope',sans-serif}.stage-art>span{font-size:42px;vertical-align:top;margin-left:13px;letter-spacing:-3px}.secondary .stage-art{color:#254deb}.high .stage-art{color:#b55529}.stage-card h3{font-size:26px;margin-bottom:9px}.stage-card p{font-size:14px;color:#4c5967}.tags{display:flex;gap:6px;flex-wrap:wrap;margin-top:21px}.tags span{padding:5px 8px;border:1px solid #17243525;border-radius:5px;font-size:10px}.method{padding-top:20px;padding-bottom:90px;display:grid;grid-template-columns:1fr 1fr;gap:65px}.method h2{margin-top:24px;line-height:1.2}.method h2 span{color:var(--blue)}.method-items article{border-bottom:1px solid var(--line);display:flex;gap:25px;padding:24px 0}.method-items article:first-child{padding-top:0}.method-items article>span{font-size:12px;color:var(--blue);padding-top:3px}.method-items h3{font-size:20px;letter-spacing:-.035em;margin-bottom:10px}.method-items p{font-size:14px;color:var(--muted)}.campus-banner{max-width:1240px;margin:0 auto 70px;border-radius:20px;background:var(--blue);color:white;padding:48px 55px;display:flex;justify-content:space-between;align-items:center;gap:30px}.campus-banner h2{font-size:44px;margin:14px 0}.campus-banner p{color:#dce4ff;font-size:15px}.campus-banner .eyebrow{color:#cbd6ff}footer{border-top:1px solid var(--line);max-width:1240px;margin:auto;display:flex;justify-content:space-between;align-items:center;padding:35px 0 45px;gap:25px}footer p,footer>span{font-size:12px;color:var(--muted)}footer .brand{font-size:28px}footer .brand-symbol{transform:scale(.85)}
/* Access */
.login-page{min-height:100vh;display:grid;grid-template-columns:1fr 1fr}.login-story{background:var(--blue);color:white;padding:48px 65px;display:flex;flex-direction:column;justify-content:space-between;min-height:100vh}.login-story .brand-symbol{background:white;color:var(--blue)}.login-story h1{font-size:clamp(3rem,4.3vw,4.7rem);line-height:1.1;margin:25px 0}.login-story em{color:#cddd95}.login-story p{color:#dce4ff;line-height:1.8}.login-bottom{font-size:11px;letter-spacing:1.5px}.login-main{padding:48px 55px 30px;display:flex;flex-direction:column;justify-content:space-between}.back-link{font-size:14px;color:var(--muted);display:inline-block}.back-link:hover{color:var(--blue)}.login-form-wrap{max-width:390px;width:100%;margin:45px auto}.login-icon{font-size:28px;display:grid;place-items:center;width:53px;height:53px;background:#edf1ff;color:var(--blue);border-radius:14px;margin-bottom:28px}.login-form-wrap h2{margin:14px 0;font-size:43px}.login-form-wrap>p{font-size:15px;color:var(--muted);margin-bottom:28px}.login-form-wrap .eyebrow{font-size:10px}form label{display:block;margin:18px 0 8px;font-size:14px;font-weight:550}input{display:block;width:100%;height:52px;border:1px solid #d9dfe8;background:white;color:var(--ink);border-radius:8px;padding:12px 14px;font-size:15px}input::placeholder{color:#8a93a0}.password-field{position:relative}.password-field input{padding-right:80px}.password-field button{position:absolute;right:6px;top:6px;height:40px;border:0;background:transparent;color:var(--muted);padding:0 12px;font-size:13px}.login-form-wrap .button{margin-top:25px;width:100%}.demo-note{background:var(--soft);border-radius:9px;padding:17px 20px;margin-top:24px;font-size:12px;display:flex;flex-direction:column;gap:5px;color:var(--muted)}.demo-note strong{color:var(--ink);font-weight:550}.demo-note b{font-weight:600}.login-footer{font-size:12px;color:var(--muted);text-align:center}#login-error{color:#b82c23;font-size:14px;margin-top:15px}
/* Classroom */
.campus-page{background:#f6f7fa;display:flex;min-height:100vh}.sidebar{width:255px;flex-shrink:0;background:white;border-right:1px solid var(--line);padding:38px 25px 25px;position:fixed;inset:0 auto 0 0;display:flex;flex-direction:column}.sidebar .brand{margin-left:9px}.sidebar .brand-small{font-size:8px;letter-spacing:1.8px}.sidebar-label{font-size:10px;letter-spacing:1.6px;color:#8b94a2;margin:65px 12px 15px}.stage-nav{display:flex;flex-direction:column;gap:7px}.stage-nav a{display:flex;align-items:center;gap:12px;padding:15px 13px;font-size:14px;font-weight:500;border-radius:8px}.stage-nav a>span{font-size:11px;opacity:.6}.stage-nav b{margin-left:auto;font-size:19px;font-weight:400;opacity:0}.stage-nav .active{background:#edf1ff;color:var(--blue)}.stage-nav .active b{opacity:1}.stage-nav a:hover{background:#f3f5fa}.sidebar-bottom{margin-top:auto;font-size:12px}.sidebar-note{padding:20px 10px 35px;color:var(--muted);line-height:1.7;font-size:13px}.sidebar-note strong{font-weight:550;color:var(--ink)}.sidebar-bottom>a{display:block;padding:14px 10px}.logout{width:100%;background:white;border:0;border-top:1px solid var(--line);text-align:left;display:flex;justify-content:space-between;padding:18px 10px 0;color:var(--muted);font-size:13px}.campus-main{width:calc(100% - 255px);margin-left:255px}.campus-top{height:96px;border-bottom:1px solid var(--line);background:white;display:flex;align-items:center;justify-content:space-between;padding:0 50px;color:var(--muted);font-size:13px}.profile{display:flex;gap:11px;align-items:center}.profile strong{font-size:13px;color:var(--ink);font-weight:600;display:block}.profile small{font-size:11px}.avatar{display:grid;place-items:center;width:37px;height:37px;background:#edf1ff;color:var(--blue);border-radius:50%;font-weight:600}#classroom{max-width:1260px;margin:auto;padding:42px 50px 60px;min-height:calc(100vh - 165px)}.class-heading .eyebrow{font-size:10px;color:var(--muted)}.class-heading h1{font-size:38px;margin:15px 0 10px;font-weight:650}.class-heading h1>span{color:var(--blue);font-size:32px;margin-left:16px}.class-heading>p{color:var(--muted);font-size:15px}.stage-intro{border-radius:16px;margin:30px 0 37px;padding:27px 32px;display:flex;justify-content:space-between;align-items:center;gap:20px}.stage-intro .eyebrow{font-size:10px}.stage-intro h2{font-size:34px;margin:7px 0 10px}.stage-intro p{font-size:14px;color:#53616d}.big-stage-symbol{font-size:75px;letter-spacing:-7px;line-height:1.2;opacity:.7;font-weight:550;margin-right:15px}.subjects-heading{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:22px}.subjects-heading h2{font-size:22px;letter-spacing:-.03em}.subjects-heading>span{font-size:12px;color:var(--muted)}.subject-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.subject-card{border:1px solid var(--line);border-radius:13px;background:white;padding:22px;display:flex;flex-direction:column;transition:transform .2s,border-color .2s}.subject-card:hover{transform:translateY(-4px);border-color:#a5b6f5}.subject-card-top{display:flex;align-items:center;justify-content:space-between;color:var(--muted)}.subject-icon{width:43px;height:43px;border-radius:10px;display:grid;place-items:center;font-weight:600;color:var(--ink);font-size:20px;font-family:'Manrope',sans-serif}.subject-card h3{font-size:18px;letter-spacing:-.025em;line-height:1.3;margin:22px 0 9px}.subject-card>p{font-size:13px;color:var(--muted);line-height:1.6;margin-bottom:23px}.subject-card-bottom{display:flex;justify-content:space-between;gap:10px;border-top:1px solid #edf0f5;padding-top:14px;margin-top:auto;font-size:11px;color:var(--muted)}.subject-card-bottom>span{color:var(--blue)}.campus-footer{padding:20px 50px;max-width:none;font-size:11px}.campus-footer>span{font-size:11px}.subject-detail{margin:35px 0}.large{width:62px;height:62px;font-size:30px;margin:22px 0}.subject-detail h1{font-size:40px}.choose-course{font-size:23px;margin-bottom:22px}.course-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.course-card{display:flex;gap:20px;align-items:center;background:white;border:1px solid var(--line);border-radius:13px;padding:27px;transition:border-color .2s}.course-card:hover{border-color:var(--blue)}.course-card>span{font-size:34px;color:var(--blue);font-weight:600}.course-card small{display:block;font-size:12px;color:var(--muted);margin-top:4px}.course-card b{margin-left:auto;font-weight:400}.empty-state{border:1px dashed #cbd2de;border-radius:15px;padding:65px 25px;text-align:center;background:#ffffff80;margin-top:30px}.empty-state>span:first-child{font-size:31px;color:var(--blue);display:block;margin-bottom:20px}.empty-state h2{font-size:26px}.empty-state p{font-size:14px;color:var(--muted);margin:15px 0 25px;line-height:1.8}.empty-label{font-size:12px;border-radius:5px;background:#edf1f7;padding:7px 11px;color:var(--muted)}
@media(min-width:1500px){.hero h1{font-size:72px}}@media(max-width:1100px){.header{padding:0 35px}.hero{padding:45px 35px;gap:28px}.hero h1{font-size:54px}.hero-visual{height:460px}.section{padding:65px 35px}.campus-banner{margin:0 35px 55px}footer{margin:0 35px}.subject-strip{gap:22px;font-size:12px}.sidebar{width:215px;padding:30px 16px}.campus-main{margin-left:215px;width:calc(100% - 215px)}#classroom{padding:35px 30px}.campus-top{padding:0 30px}.subject-grid{grid-template-columns:repeat(2,1fr)}.campus-footer{margin:0}.login-story{padding:40px}.login-main{padding:40px}.stage-card{padding:22px}.tags span{font-size:10px}}
@media(max-width:760px){.header{height:86px;padding:0 22px;gap:15px}.header nav{display:none}.brand{font-size:29px}.brand-symbol{width:36px;height:40px;font-size:35px}.brand-small{font-size:8px}.small{font-size:13px;gap:16px;padding:11px 15px}.hero{padding:35px 24px 40px;grid-template-columns:1fr;gap:35px}.hero h1{font-size:clamp(2.8rem,8vw,4.3rem);margin-top:20px}.hero-copy>p{font-size:16px;max-width:480px}.hero .eyebrow{font-size:10px;letter-spacing:1.2px}.hero-note{margin-top:25px}.hero-visual{height:380px;margin:0 7px}.photo-caption{left:-12px;bottom:15px;padding:13px 20px 13px 13px}.vertical-word{right:-19px}.subject-strip{flex-wrap:wrap;gap:10px 20px;padding:20px;font-size:12px}.subject-strip i:nth-of-type(n+3){display:none}.subject-strip span:last-child{display:none}.section{padding:50px 24px}.section-heading{display:block;margin-bottom:28px}.section-heading>p{margin-top:20px;max-width:100%}.section-heading h2{font-size:35px}.eyebrow{font-size:10px}.stage-grid{grid-template-columns:1fr}.stage-card{padding:22px 25px;position:relative;min-height:225px}.card-top{margin-bottom:35px}.stage-art{position:absolute;right:30px;top:47px;font-size:58px}.stage-card h3{font-size:27px}.stage-card .stage-art span{font-size:33px}.tags{margin-top:16px}.stage-card p{max-width:210px}.method{grid-template-columns:1fr;gap:35px;padding-top:5px}.method h2{font-size:35px}.method-items article{gap:18px}.campus-banner{margin:0 24px 35px;padding:30px;display:block}.campus-banner h2{font-size:36px}.campus-banner .button{margin-top:26px;gap:22px}footer{margin:0 24px;padding:28px 0;flex-wrap:wrap;gap:22px}footer p{display:none}.login-page{display:block}.login-story{min-height:0;padding:27px}.login-story>div,.login-bottom{display:none}.login-main{padding:26px;min-height:calc(100vh - 94px)}.login-form-wrap{margin:35px auto}.login-form-wrap h2{font-size:37px}.login-icon{margin-bottom:23px}.sidebar{width:100%;position:static;border-right:0;border-bottom:1px solid var(--line);padding:23px 20px 14px}.sidebar .brand{margin-left:0}.sidebar-label,.sidebar-note,.sidebar-bottom>a{display:none}.campus-page{display:block}.stage-nav{flex-direction:row;gap:5px;margin-top:22px}.stage-nav a{flex:1;padding:12px 9px;justify-content:center;font-size:13px}.stage-nav a>span,.stage-nav b{display:none}.sidebar-bottom{position:absolute;right:20px;top:28px}.logout{padding:6px 0;border:0;font-size:12px;gap:12px}.campus-main{width:100%;margin-left:0}.campus-top{padding:0 23px;height:70px}.campus-top>span{font-size:11px}.profile small{font-size:10px}.avatar{width:30px;height:30px}#classroom{padding:30px 22px;min-height:60vh}.class-heading h1{font-size:33px}.stage-intro{padding:24px;margin:25px 0 30px}.stage-intro p{font-size:13px}.stage-intro h2{font-size:28px}.big-stage-symbol{font-size:52px;margin:0}.subjects-heading{gap:8px;align-items:start}.subjects-heading h2{font-size:20px}.subjects-heading>span{font-size:10px;max-width:95px;text-align:right}.subject-grid{gap:12px}.subject-card{padding:17px}.subject-card h3{font-size:16px;margin-top:18px}.subject-card>p{font-size:12px}.subject-card-bottom{font-size:10px}.subject-icon{width:37px;height:37px;font-size:18px}.course-grid{grid-template-columns:1fr}.subject-detail h1{font-size:34px}.campus-footer{padding:22px;margin:0}.campus-footer>span{font-size:10px}}@media(max-width:370px){.subject-grid{grid-template-columns:1fr}.hero h1{font-size:42px}.stage-art{opacity:.45}.campus-top>span{max-width:100px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}