:root{--bg:#f6f8fc;--card:#fff;--text:#172033;--muted:#68728a;--line:#e5e9f2;--primary:#2d5bff;--primary2:#6b4dff;--success:#147a4b;--danger:#b42318;--warning:#9a6700;--shadow:0 18px 50px rgba(24,38,75,.08);--radius:22px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.55}a{color:inherit;text-decoration:none}.container{width:min(1120px,calc(100% - 32px));margin:0 auto}.topbar{position:sticky;top:0;z-index:50;background:rgba(246,248,252,.92);backdrop-filter:blur(14px);border-bottom:1px solid rgba(229,233,242,.8)}.nav{min-height:70px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{font-weight:850;letter-spacing:-.02em}.nav nav{display:flex;gap:18px;align-items:center}.nav nav a{font-size:14px;color:var(--muted)}.nav nav a:hover{color:var(--text)}.hero{padding:78px 0 54px}.hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:34px;align-items:center}.eyebrow{display:inline-flex;align-items:center;gap:8px;border:1px solid #dce3ff;background:#eef2ff;color:#2c4bba;border-radius:999px;padding:7px 11px;font-size:13px;font-weight:700}.hero h1{font-size:clamp(42px,6vw,72px);line-height:.98;letter-spacing:-.055em;margin:16px 0 20px;max-width:850px}.hero p.lead{font-size:20px;color:var(--muted);max-width:720px}.hero-card{background:linear-gradient(145deg,#16245f,#5c39d8);color:#fff;border-radius:32px;padding:34px;min-height:330px;box-shadow:0 28px 80px rgba(45,91,255,.22);display:flex;flex-direction:column;justify-content:space-between}.hero-card .big{font-size:56px}.hero-card h3{font-size:28px;line-height:1.05;margin:0}.hero-card p{color:#dfe5ff}.section{padding:42px 0}.section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:22px}.section-head h2{font-size:34px;letter-spacing:-.03em;margin:0}.section-head p{margin:0;color:var(--muted)}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px}.book-card{display:flex;flex-direction:column;min-height:320px;transition:.18s transform,.18s box-shadow}.book-card:hover{transform:translateY(-3px);box-shadow:0 24px 60px rgba(24,38,75,.12)}.cover{height:130px;border-radius:18px;background:linear-gradient(135deg,#eef3ff,#f6edff);display:flex;align-items:center;justify-content:center;font-size:54px;margin-bottom:18px;border:1px solid #e3e8f7}.chip{display:inline-flex;border-radius:999px;background:#f0f3f8;color:#5d6880;padding:5px 9px;font-size:12px;font-weight:700}.book-card h3{font-size:22px;line-height:1.12;margin:12px 0 8px;letter-spacing:-.025em}.book-card p{color:var(--muted);margin:0 0 18px}.book-meta{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:14px;border-top:1px solid var(--line);font-size:14px}.price{font-weight:850;font-size:18px}.btn{display:inline-flex;justify-content:center;align-items:center;gap:8px;border:0;border-radius:14px;padding:12px 17px;background:var(--primary);color:#fff;font-weight:800;cursor:pointer;font-size:15px}.btn:hover{filter:brightness(.97)}.btn.secondary{background:#edf1ff;color:#2848b9}.btn.ghost{background:#fff;color:var(--text);border:1px solid var(--line)}.btn.danger{background:#fff0ef;color:var(--danger);border:1px solid #ffd8d4}.btn.full{width:100%}.bundle{background:linear-gradient(135deg,#142052,#3a2f95);color:#fff}.bundle p{color:#d7dcff}.bundle .chip{background:rgba(255,255,255,.12);color:#fff}.bundle .book-meta{border-color:rgba(255,255,255,.15)}.detail{padding:54px 0}.detail-grid{display:grid;grid-template-columns:.75fr 1.25fr;gap:34px;align-items:start}.detail-cover{height:460px;background:linear-gradient(145deg,#e9efff,#f3eaff);border-radius:32px;display:flex;align-items:center;justify-content:center;font-size:100px;box-shadow:var(--shadow);position:sticky;top:95px}.detail h1{font-size:52px;line-height:1.02;letter-spacing:-.045em;margin:14px 0}.detail .subtitle{font-size:22px;color:var(--muted)}.buybox{margin-top:28px;background:#fff;border:1px solid var(--line);border-radius:20px;padding:20px}.buybox-row{display:flex;justify-content:space-between;gap:20px;align-items:center}.buybox .price{font-size:28px}.features{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:20px}.feature{background:#f8f9fc;border:1px solid var(--line);border-radius:14px;padding:13px;font-size:14px}.form-shell{max-width:590px;margin:52px auto}.form-shell h1{font-size:38px;letter-spacing:-.04em}.field{margin:16px 0}.field label{display:block;font-weight:750;margin-bottom:7px}.field input,.field textarea,.field select{width:100%;border:1px solid #dfe4ee;border-radius:13px;background:#fff;padding:13px 14px;font:inherit;color:var(--text);outline:none}.field input:focus,.field textarea:focus,.field select:focus{border-color:#9bb0ff;box-shadow:0 0 0 4px #edf1ff}.check{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--muted)}.alert{margin-top:18px;border-radius:14px;padding:12px 14px;border:1px solid}.alert.success{background:#effaf5;border-color:#caeadb;color:var(--success)}.alert.error{background:#fff1f0;border-color:#ffd7d3;color:var(--danger)}.library-hero{padding:44px 0 22px}.library-hero h1{font-size:46px;letter-spacing:-.04em;margin:0}.library-hero p{color:var(--muted)}.progress{height:8px;background:#edf0f5;border-radius:999px;overflow:hidden}.progress>span{display:block;height:100%;background:linear-gradient(90deg,var(--primary),var(--primary2));border-radius:999px}.reader-wrap{width:min(820px,calc(100% - 28px));margin:34px auto 80px;position:relative}.reader-top{display:flex;justify-content:space-between;gap:16px;align-items:center;margin-bottom:18px}.reader-card{background:#fff;border:1px solid var(--line);border-radius:28px;box-shadow:var(--shadow);padding:clamp(24px,5vw,58px);position:relative;overflow:hidden}.reader-card h1{font-size:clamp(34px,5vw,54px);line-height:1.04;letter-spacing:-.045em}.reader-card h2{font-size:27px;margin-top:38px}.reader-card p,.reader-card li{font-size:19px;line-height:1.78}.reader-card .callout{background:#f5f7ff;border:1px solid #dfe6ff;border-left:4px solid var(--primary);border-radius:15px;padding:18px 20px;margin:28px 0}.reader-card blockquote{margin:26px 0;border-left:4px solid #b8c3e8;padding:8px 0 8px 20px;color:#4e5871}.reader-actions{display:flex;justify-content:space-between;gap:12px;margin-top:28px}.wm-layer{position:absolute;inset:0;pointer-events:none;z-index:5;overflow:hidden;opacity:.05}.wm{position:absolute;font-weight:800;font-size:14px;transform:rotate(-28deg);white-space:nowrap}.footer{padding:44px 0;color:var(--muted)}.footer-grid{border-top:1px solid var(--line);padding-top:26px;display:flex;justify-content:space-between;gap:20px}.admin-shell{display:grid;grid-template-columns:230px 1fr;min-height:100vh}.admin-side{background:#111a39;color:#fff;padding:24px;position:sticky;top:0;height:100vh}.admin-side .brand{display:block;margin-bottom:26px}.admin-side nav{display:grid;gap:6px}.admin-side a{padding:10px 12px;border-radius:11px;color:#dfe4ff;font-size:14px}.admin-side a:hover{background:#1c2850}.admin-main{padding:30px}.stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.stat{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px}.stat .num{font-size:30px;font-weight:850}.table-wrap{overflow:auto;background:#fff;border:1px solid var(--line);border-radius:18px}.table{width:100%;border-collapse:collapse}.table th,.table td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:top;font-size:14px}.table th{font-size:12px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}.actions{display:flex;gap:8px;flex-wrap:wrap}.tiny{font-size:12px;color:var(--muted)}.admin-toolbar{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:18px}.admin-toolbar h1{margin:0}.content-editor{min-height:420px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:14px}.device{display:flex;justify-content:space-between;gap:12px;padding:13px 0;border-bottom:1px solid var(--line)}
@media(max-width:850px){.hero-grid,.detail-grid{grid-template-columns:1fr}.hero{padding-top:46px}.hero h1{font-size:48px}.hero-card{min-height:260px}.grid{grid-template-columns:1fr 1fr}.detail-cover{position:static;height:250px}.detail h1{font-size:42px}.admin-shell{display:block}.admin-side{position:relative;height:auto}.stat-grid{grid-template-columns:1fr 1fr}}
@media(max-width:620px){.container{width:min(100% - 22px,1120px)}.nav{min-height:62px}.nav nav a:first-child{display:none}.grid,.features{grid-template-columns:1fr}.hero h1{font-size:40px}.hero p.lead{font-size:17px}.hero-card{padding:25px}.section-head{align-items:start;flex-direction:column}.reader-card p,.reader-card li{font-size:17px}.reader-actions{flex-direction:column}.footer-grid{flex-direction:column}.stat-grid{grid-template-columns:1fr}.admin-main{padding:18px}.buybox-row{align-items:flex-start;flex-direction:column}.detail h1{font-size:38px}.library-hero h1{font-size:38px}}