:root{--ink:#10241f;--muted:#5c6e68;--paper:#f6f5ef;--white:#fff;--green:#0e5a48;--deep:#071d18;--lime:#d4ed85;--gold:#e7af45;--line:#dce3de;--danger:#a12d31;--shadow:0 18px 50px rgba(7,29,24,.10);--radius:22px}*{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,"Segoe UI",sans-serif;line-height:1.55}button,input,select,textarea{font:inherit}a{color:inherit}.skip-link{position:absolute;left:-999px;top:8px;background:#fff;padding:10px;z-index:99}.skip-link:focus{left:8px}.site-header{height:76px;padding:0 clamp(20px,5vw,72px);display:flex;align-items:center;justify-content:space-between;background:rgba(246,245,239,.94);backdrop-filter:blur(16px);border-bottom:1px solid rgba(16,36,31,.08);position:sticky;top:0;z-index:20}.brand{text-decoration:none;display:flex;align-items:center;gap:10px;font-size:1.12rem;font-weight:800;letter-spacing:-.03em}.brand>span:last-child>span{color:var(--green)}.brand-mark{display:grid;place-items:center;width:38px;height:38px;border-radius:12px;background:var(--deep);color:var(--lime);font-family:Georgia,serif;font-size:1.4rem}.site-header nav{display:flex;gap:8px;align-items:center}.site-header nav a,.link-button{border:0;background:none;padding:10px 13px;text-decoration:none;font-weight:650;color:var(--muted);cursor:pointer}.site-header nav a:hover,.site-header nav a.active,.link-button:hover{color:var(--green)}.nav-toggle{display:none;background:none;border:0;font-size:1.5rem}.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid var(--green);border-radius:999px;background:var(--green);color:#fff;padding:12px 20px;text-decoration:none;font-weight:750;cursor:pointer;transition:.2s}.button:hover{transform:translateY(-1px);box-shadow:0 8px 20px rgba(14,90,72,.18)}.button.secondary{background:transparent;color:var(--green)}.button.light{background:#fff;color:var(--deep);border-color:#fff}.button.danger{background:var(--danger);border-color:var(--danger)}.button.small{padding:8px 13px;font-size:.88rem}.button:disabled{opacity:.55;cursor:not-allowed;transform:none}.hero{min-height:620px;background:var(--deep);color:#fff;display:grid;grid-template-columns:minmax(0,1.2fr) minmax(320px,.8fr);align-items:center;gap:60px;padding:80px clamp(24px,7vw,110px);overflow:hidden;position:relative}.hero:after{content:"";position:absolute;width:440px;height:440px;border:90px solid rgba(212,237,133,.09);border-radius:50%;right:-130px;top:-160px}.eyebrow{display:inline-flex;color:var(--lime);font-size:.78rem;font-weight:800;letter-spacing:.14em;text-transform:uppercase}.hero h1{font-family:Georgia,serif;font-weight:500;font-size:clamp(3rem,7vw,6.7rem);line-height:.92;letter-spacing:-.055em;margin:20px 0 28px;max-width:820px}.hero h1 em{color:var(--lime);font-weight:400}.hero p{font-size:1.12rem;color:#cbd9d3;max-width:620px}.hero-actions{display:flex;gap:12px;margin-top:32px;flex-wrap:wrap}.hero-card{position:relative;z-index:1;background:linear-gradient(145deg,#174b3f,#0b3028);padding:34px;border:1px solid rgba(255,255,255,.13);border-radius:30px;box-shadow:0 30px 80px #020b09}.hero-card .metric{font-family:Georgia,serif;font-size:4.5rem;color:var(--lime);line-height:1}.hero-card ul{list-style:none;padding:0;margin:28px 0 0}.hero-card li{padding:14px 0;border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:space-between}.section{padding:84px clamp(22px,7vw,110px);max-width:1500px;margin:auto}.section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:34px}.section h2,.auth-panel h1,.page-title{font-family:Georgia,serif;font-weight:500;font-size:clamp(2.2rem,5vw,4.2rem);line-height:1.05;letter-spacing:-.04em;margin:.2em 0}.section-head p{max-width:520px;color:var(--muted)}.course-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(290px,1fr));gap:22px}.course-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:0 8px 25px rgba(7,29,24,.04);transition:.2s}.course-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}.course-art{height:190px;background:linear-gradient(135deg,var(--green),var(--deep));padding:26px;color:var(--lime);display:flex;align-items:flex-end;font-family:Georgia,serif;font-size:2rem;position:relative;overflow:hidden}.course-art:after{content:"✦";position:absolute;font-size:8rem;opacity:.08;right:15px;top:-24px}.course-body{padding:25px}.course-body h3{font-size:1.3rem;margin:0 0 8px}.course-body p{color:var(--muted);min-height:52px}.course-meta{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--line);padding-top:18px}.price{font-size:1.2rem;font-weight:850}.feature-band{background:var(--lime);padding:62px clamp(22px,7vw,110px);display:grid;grid-template-columns:repeat(3,1fr);gap:30px}.feature-band h3{font-family:Georgia,serif;font-size:1.7rem;margin:8px 0}.feature-band p{margin:0;color:#344b42}.feature-number{font-weight:850;color:var(--green)}.page{padding:60px clamp(20px,6vw,90px);max-width:1440px;margin:auto}.auth-wrap{min-height:calc(100vh - 180px);display:grid;place-items:center;padding:55px 20px}.auth-panel{background:#fff;border:1px solid var(--line);border-radius:28px;padding:clamp(26px,5vw,52px);width:min(100%,600px);box-shadow:var(--shadow)}.auth-panel .lead,.muted{color:var(--muted)}form{display:grid;gap:16px}.fields-two{display:grid;grid-template-columns:1fr 1fr;gap:14px}label{display:grid;gap:7px;font-size:.9rem;font-weight:700}input,select,textarea{width:100%;border:1px solid #cbd7d1;background:#fff;border-radius:12px;padding:12px 14px;color:var(--ink);outline:none}textarea{min-height:110px;resize:vertical}input:focus,select:focus,textarea:focus{border-color:var(--green);box-shadow:0 0 0 3px rgba(14,90,72,.1)}label.check{display:flex;align-items:flex-start;font-weight:500}.check input{width:auto;margin-top:5px}.form-note{font-size:.88rem;color:var(--muted)}.error-box,.success-box{padding:12px 14px;border-radius:12px;font-size:.92rem}.error-box{background:#fce9e9;color:#802327}.success-box{background:#e5f4eb;color:#14583c}.dashboard-head{display:flex;justify-content:space-between;align-items:end;margin-bottom:32px;gap:20px}.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px;margin:28px 0}.stat{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px}.stat b{font-family:Georgia,serif;font-size:2.5rem;display:block}.empty{background:#fff;border:1px dashed #b9c8c1;border-radius:20px;text-align:center;padding:50px 25px;color:var(--muted)}.preview{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(300px,.65fr);gap:50px;align-items:start}.preview-main h1{font-family:Georgia,serif;font-size:clamp(2.8rem,6vw,5.8rem);line-height:.96;letter-spacing:-.05em;margin:18px 0}.preview-main>.lead{font-size:1.15rem;color:var(--muted);max-width:760px}.purchase-card{background:var(--deep);color:#fff;border-radius:26px;padding:30px;position:sticky;top:105px}.purchase-card .price{font-family:Georgia,serif;font-size:3.4rem;color:var(--lime)}.purchase-card .button{width:100%;margin-top:16px}.count-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:36px 0}.count{background:#fff;border:1px solid var(--line);padding:18px;border-radius:15px}.count b{display:block;font-size:1.6rem}.syllabus{display:grid;gap:10px}.syllabus details{background:#fff;border:1px solid var(--line);border-radius:14px;padding:15px 18px}.learn-layout{display:grid;grid-template-columns:300px minmax(0,1fr);min-height:calc(100vh - 76px)}.learn-nav{background:var(--deep);color:#fff;padding:30px 20px;overflow:auto}.learn-nav h2{font-family:Georgia,serif;font-weight:500}.learn-nav button{display:block;width:100%;background:none;color:#cddad5;border:0;border-radius:10px;text-align:left;padding:11px 12px;cursor:pointer}.learn-nav button:hover,.learn-nav button.active{background:rgba(212,237,133,.12);color:var(--lime)}.learn-nav .group{margin:22px 12px 8px;text-transform:uppercase;letter-spacing:.1em;font-size:.72rem;color:#809b91;font-weight:800}.learn-content{padding:50px clamp(24px,6vw,82px);max-width:1000px}.learn-content h1{font-family:Georgia,serif;font-size:3.2rem}.lecture-body{background:#fff;border:1px solid var(--line);border-radius:20px;padding:clamp(20px,4vw,42px)}.lecture-body table{width:100%;border-collapse:collapse}.lecture-body th,.lecture-body td{padding:9px;border:1px solid var(--line)}.quiz-question{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px;margin:16px 0}.option{display:flex;gap:10px;padding:10px;border:1px solid var(--line);border-radius:10px;margin:8px 0;font-weight:500}.option input{width:auto}.flashcard{min-height:280px;background:var(--deep);color:#fff;border-radius:24px;padding:40px;display:grid;place-items:center;text-align:center;font-family:Georgia,serif;font-size:2rem;cursor:pointer}.admin-tabs{display:flex;gap:7px;overflow:auto;border-bottom:1px solid var(--line);margin:20px 0 30px}.admin-tabs button{padding:12px 14px;background:none;border:0;border-bottom:3px solid transparent;cursor:pointer;font-weight:700}.admin-tabs button.active{color:var(--green);border-color:var(--green)}.table-wrap{overflow:auto;background:#fff;border:1px solid var(--line);border-radius:18px}.data-table{border-collapse:collapse;width:100%;min-width:720px}.data-table th,.data-table td{text-align:left;padding:14px;border-bottom:1px solid var(--line);vertical-align:top}.data-table th{font-size:.75rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}.status{display:inline-flex;border-radius:999px;padding:4px 9px;background:#edf1ef;font-size:.78rem;font-weight:800}.status.published,.status.confirmed,.status.active{background:#daf2e4;color:#19613f}.status.pending{background:#fff0c9;color:#7f5810}.status.rejected,.status.revoked,.status.archived{background:#f7dede;color:#8a292d}.action-row{display:flex;flex-wrap:wrap;gap:7px}.panel{background:#fff;border:1px solid var(--line);border-radius:20px;padding:24px;margin:18px 0}.code-output{white-space:pre-wrap;background:#071d18;color:#d4ed85;padding:20px;border-radius:14px;font-family:ui-monospace,monospace}.toast{position:fixed;right:24px;bottom:24px;background:var(--deep);color:#fff;border-radius:12px;padding:13px 18px;box-shadow:var(--shadow);transform:translateY(120px);opacity:0;transition:.25s;z-index:50}.toast.show{transform:none;opacity:1}dialog{border:0;border-radius:24px;padding:0;box-shadow:0 25px 80px rgba(0,0,0,.3);width:min(92vw,600px);max-height:88vh}dialog::backdrop{background:rgba(3,15,12,.72);backdrop-filter:blur(3px)}#dialog-body{padding:36px}.dialog-close{position:absolute;right:12px;top:9px;border:0;background:none;font-size:1.8rem;cursor:pointer}.page-loader{min-height:55vh;display:grid;place-items:center;color:var(--muted)}footer{background:#061713;color:#c9d5d0;display:flex;justify-content:space-between;gap:25px;padding:45px clamp(22px,7vw,110px)}footer p{margin:5px 0;color:#81968d}
@media(max-width:850px){.nav-toggle{display:block}.site-header nav{display:none;position:absolute;top:76px;left:0;right:0;background:var(--paper);padding:18px 25px;border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch}.site-header nav.open{display:flex}.hero{grid-template-columns:1fr;padding-top:62px}.hero-card{display:none}.feature-band{grid-template-columns:1fr}.preview{grid-template-columns:1fr}.purchase-card{position:static}.count-grid{grid-template-columns:1fr 1fr}.learn-layout{grid-template-columns:1fr}.learn-nav{max-height:380px}.fields-two{grid-template-columns:1fr}.dashboard-head{align-items:start;flex-direction:column}}@media(max-width:520px){.hero{min-height:560px}.hero h1{font-size:3.4rem}.section{padding:58px 19px}.count-grid{grid-template-columns:1fr}.site-header{padding:0 17px}footer{flex-direction:column}}