*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.6}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}button,input,textarea,select{font:inherit}.topbar{position:sticky;top:0;z-index:50;display:flex;align-items:center;gap:28px;justify-content:space-between;padding:15px clamp(18px,4vw,58px);background:color-mix(in srgb,var(--paper) 92%,transparent);backdrop-filter:blur(14px);border-bottom:1px solid color-mix(in srgb,var(--primary) 15%,transparent)}.brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:.08em}.brand-mark{display:grid;place-items:center;width:40px;height:40px;border:1px solid var(--primary);border-radius:50%;font-family:Georgia,serif;color:var(--primary);letter-spacing:0}.topbar nav{display:flex;align-items:center;gap:16px;font-size:.93rem}.topbar nav>a,.dropdown>button{padding:9px 5px}.nav-pill,.btn.primary{background:var(--primary);color:white!important;border-radius:999px;padding:10px 18px!important}.menu-btn{display:none;background:none;border:0;font-size:1.6rem}.dropdown{position:relative}.dropdown>button{border:0;background:none;color:inherit;cursor:pointer}.dropdown>div{display:none;position:absolute;top:100%;left:0;min-width:235px;background:white;border:1px solid #eadfe4;border-radius:16px;padding:8px;box-shadow:0 20px 50px #513d4e18}.dropdown:hover>div{display:grid}.dropdown>div a{padding:10px 12px;border-radius:10px}.dropdown>div a:hover{background:var(--paper)}.install-btn{border:1px solid var(--primary);background:transparent;color:var(--primary);border-radius:999px;padding:9px 14px;cursor:pointer}.hero{min-height:72vh;display:grid;grid-template-columns:1.12fr .88fr;align-items:center;gap:6vw;padding:clamp(55px,9vw,120px) clamp(20px,8vw,120px);background:radial-gradient(circle at 88% 22%,color-mix(in srgb,var(--accent) 65%,white) 0 13%,transparent 14%),linear-gradient(135deg,var(--paper),color-mix(in srgb,var(--accent) 35%,var(--paper)))}.eyebrow{letter-spacing:.18em;text-transform:uppercase;font-size:.75rem;font-weight:800;color:var(--primary)}h1,h2,h3{font-family:Georgia,"Times New Roman",serif;line-height:1.08;font-weight:500}h1{font-size:clamp(3rem,7vw,6.8rem);margin:.15em 0 .25em;letter-spacing:-.05em}h2{font-size:clamp(2.2rem,4.8vw,4.2rem);margin:.2em 0}.hero p{font-size:clamp(1.05rem,1.5vw,1.3rem);max-width:700px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid var(--primary);border-radius:999px;padding:12px 20px;margin-top:16px}.btn.secondary{background:transparent;color:var(--primary)}.hero-art{aspect-ratio:4/5;border-radius:48% 48% 24px 24px;background:linear-gradient(155deg,color-mix(in srgb,var(--secondary) 50%,white),color-mix(in srgb,var(--primary) 80%,white));position:relative;overflow:hidden;box-shadow:0 32px 70px #3925352a}.hero-art:before,.hero-art:after{content:"";position:absolute;border:1px solid #ffffff80;border-radius:50%}.hero-art:before{inset:12% 18%}.hero-art:after{width:45%;aspect-ratio:1;right:-5%;bottom:8%}.hero-art span{position:absolute;left:12%;bottom:10%;color:white;font:500 clamp(2rem,4vw,4rem)/1 Georgia,serif;max-width:70%}.section{padding:clamp(60px,9vw,115px) clamp(20px,8vw,120px)}.section.alt{background:white}.section-head{max-width:850px;margin-bottom:40px}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}.area-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.area-card{min-height:210px;border:1px solid color-mix(in srgb,var(--primary) 20%,white);border-radius:24px;padding:28px;background:linear-gradient(160deg,white,color-mix(in srgb,var(--accent) 18%,white));display:flex;flex-direction:column;justify-content:flex-end}.area-card strong{font:500 1.55rem Georgia,serif}.course-card{background:white;border:1px solid #ebdfe4;border-radius:24px;overflow:hidden;box-shadow:0 14px 38px #3724320d}.course-cover{aspect-ratio:16/10;background:linear-gradient(140deg,var(--secondary),var(--primary));display:flex;align-items:flex-end;padding:22px;color:#fff}.course-cover img{width:100%;height:100%;object-fit:cover;margin:-22px}.course-cover span{font-family:Georgia,serif;font-size:1.25rem}.course-body{padding:24px}.course-body h3{font-size:1.65rem;margin:.35rem 0}.course-body small{color:var(--primary);font-weight:700}.text-link{color:var(--primary);font-weight:800}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:30px}.stat{padding:22px;border-radius:18px;background:color-mix(in srgb,var(--accent) 22%,white)}.stat strong{display:block;font-family:Georgia,serif;font-size:2rem}.page-hero{padding:80px clamp(20px,8vw,120px) 50px;background:linear-gradient(160deg,var(--paper),color-mix(in srgb,var(--accent) 25%,white))}.page-hero h1{font-size:clamp(2.8rem,5vw,5rem)}.prose{max-width:900px}.course-detail{display:grid;grid-template-columns:1.2fr .8fr;gap:50px}.info-box{background:white;border:1px solid #eadfe4;border-radius:24px;padding:26px;position:sticky;top:100px}.info-row{padding:14px 0;border-bottom:1px solid #eee}.auth-wrap{min-height:78vh;display:grid;grid-template-columns:1fr 1fr}.auth-art{background:linear-gradient(145deg,var(--primary),var(--secondary));color:white;padding:8vw;display:flex;align-items:flex-end}.auth-art h1{font-size:clamp(3rem,6vw,6rem)}.auth-card{padding:70px clamp(25px,7vw,100px);display:flex;align-items:center}.form-card{width:100%;max-width:520px;margin:auto}.form-card h2{font-size:3rem}.field{display:grid;gap:7px;margin:14px 0}.field input,.field textarea,.field select{width:100%;padding:13px 14px;border:1px solid #dacdd3;border-radius:12px;background:white}.field textarea{min-height:120px}.form-card .btn{width:100%;cursor:pointer}.notice,.flash{padding:12px 18px;background:#fff8d6;border:1px solid #eadb90;border-radius:12px}.flash{position:fixed;z-index:70;right:20px;top:80px}.panel{display:grid;grid-template-columns:250px 1fr;min-height:78vh}.side{padding:26px 18px;background:#2e252c;color:#fff}.side h3{margin:8px 12px 22px}.side a{display:block;padding:11px 12px;border-radius:10px;margin:4px 0}.side a:hover{background:#ffffff16}.panel-main{padding:35px clamp(20px,4vw,60px);overflow:auto}.panel-head{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:28px}.panel-head h1{font-size:2.6rem}.table-wrap{overflow:auto;background:white;border-radius:18px;border:1px solid #eadfe4}.table{width:100%;border-collapse:collapse;min-width:720px}.table th,.table td{padding:13px 14px;border-bottom:1px solid #eee;text-align:left;vertical-align:top}.badge{display:inline-block;padding:4px 9px;border-radius:999px;background:var(--accent);font-size:.82rem}.badge.admin{background:#efd8de}.badge.teacher{background:#dce4ef}.badge.student{background:#e1eadc}.progress{height:9px;background:#eee;border-radius:999px;overflow:hidden}.progress span{display:block;height:100%;background:var(--primary)}.lesson{padding:18px;background:white;border:1px solid #eadfe4;border-radius:16px;margin:10px 0}.lesson.done{border-color:#b4c7a7}.video-frame{aspect-ratio:16/9;border:0;width:100%;border-radius:16px;background:#191719}.forum-item{padding:16px 0;border-bottom:1px solid #e9dee3}footer{display:grid;grid-template-columns:1.4fr .8fr .8fr;gap:40px;padding:60px clamp(20px,8vw,120px);background:#2e252c;color:#eee}footer a{display:block;margin:6px 0}footer p{max-width:560px;color:#cfbec7}.footer-brand{color:#fff;margin-bottom:14px}.empty{padding:28px;border:1px dashed #ccb8c2;border-radius:16px;color:#6c5a64}.split{display:grid;grid-template-columns:1fr 1fr;gap:24px}.actions{display:flex;gap:8px;flex-wrap:wrap}.actions a,.actions button{padding:7px 10px;border-radius:8px;border:1px solid #d9cad1;background:white;cursor:pointer}.danger{color:#9e273f}.certificate{min-height:70vh;border:14px double var(--primary);padding:8vw;text-align:center;background:white}.certificate h1{font-size:4rem}.certificate .seal{margin:35px auto;width:90px;height:90px;border-radius:50%;display:grid;place-items:center;background:var(--primary);color:white;font-family:Georgia,serif;font-size:2rem}
@media(max-width:980px){.topbar nav{display:none;position:absolute;left:12px;right:12px;top:72px;background:white;padding:16px;border-radius:18px;box-shadow:0 20px 50px #0002;flex-direction:column;align-items:stretch}.topbar nav.open{display:flex}.menu-btn{display:block}.dropdown>div{position:static;display:grid;box-shadow:none;border:0;padding-left:12px}.hero,.course-detail,.auth-wrap,.split{grid-template-columns:1fr}.hero-art{max-height:560px}.grid{grid-template-columns:repeat(2,1fr)}.area-grid{grid-template-columns:repeat(2,1fr)}.panel{grid-template-columns:1fr}.side{display:flex;gap:4px;overflow:auto;position:sticky;top:70px;z-index:20}.side h3{display:none}.side a{white-space:nowrap}.stats{grid-template-columns:repeat(2,1fr)}footer{grid-template-columns:1fr 1fr}.auth-art{min-height:320px}.info-box{position:static}}
@media(max-width:640px){.grid,.area-grid,.stats,footer{grid-template-columns:1fr}.hero{padding-top:55px}.section{padding-inline:18px}.topbar{padding-inline:16px}.page-hero{padding-inline:18px}.panel-main{padding:24px 14px}.panel-head{align-items:flex-start;flex-direction:column}.auth-card{padding:45px 20px}h1{font-size:3.2rem}}
@media print{.topbar,footer,.side,.panel-head .actions,.no-print{display:none!important}.panel{display:block}.panel-main{padding:0}.certificate{border-color:#333}}