:root{
  --ink:#172033;--ink-2:#4b5568;--muted:#6f7a8f;--line:#dfe4ee;
  --bg:#f6f7fb;--surface:#fff;--surface-2:#f0f3f9;
  --brand:#182747;--brand-2:#263b68;--accent:#e7a93f;--accent-soft:#fff4dc;
  --success:#17785b;--danger:#b93445;--warning:#a7660b;--info:#315aa8;
  --shadow:0 18px 55px rgba(24,39,71,.10);--radius:24px;--radius-sm:14px;
  --container:1180px;--nav-h:76px;
}
[data-theme="dark"]{
  --ink:#f5f7fb;--ink-2:#c8d0df;--muted:#a7b1c4;--line:#34405a;
  --bg:#0e1524;--surface:#151f33;--surface-2:#1d2940;
  --brand:#f0b44d;--brand-2:#f5c36e;--accent:#f0b44d;--accent-soft:#332a18;
  --shadow:0 18px 55px rgba(0,0,0,.3);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;line-height:1.6}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
.container{width:min(calc(100% - 32px),var(--container));margin:auto}
.site-nav{position:sticky;top:0;z-index:50;height:var(--nav-h);background:color-mix(in srgb,var(--surface) 92%,transparent);backdrop-filter:blur(15px);border-bottom:1px solid var(--line)}
.nav-wrap{height:100%;display:flex;align-items:center;gap:24px}
.brand{display:flex;align-items:center;gap:12px;min-width:max-content}
.brand img{width:178px;height:50px;object-fit:contain}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{padding:10px 12px;border-radius:12px;color:var(--ink-2);font-size:14px;font-weight:700}
.nav-link:hover,.nav-link.active{background:var(--surface-2);color:var(--brand)}
.nav-actions{display:flex;align-items:center;gap:8px}
.icon-btn,.btn{border:0;border-radius:13px;min-height:42px;display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:800}
.icon-btn{width:42px;background:var(--surface-2);color:var(--ink)}
.btn{padding:10px 16px;background:var(--surface-2);color:var(--ink)}
.btn-primary{background:var(--brand);color:#fff}
[data-theme="dark"] .btn-primary{color:#172033}
.btn-accent{background:var(--accent);color:#172033}
.btn-outline{background:transparent;border:1px solid var(--line)}
.btn-danger{background:var(--danger);color:#fff}
.btn-sm{min-height:34px;padding:6px 10px;font-size:13px}
.nav-toggle{display:none}
main{min-height:70vh}
.hero{padding:70px 0 50px}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:7px 11px;border-radius:999px;background:var(--accent-soft);color:var(--warning);font-weight:900;font-size:12px;letter-spacing:.08em;text-transform:uppercase}
h1,h2,h3,h4{line-height:1.17;margin:0 0 14px}
h1{font-size:clamp(40px,6vw,76px);letter-spacing:-.045em}
h2{font-size:clamp(28px,4vw,46px);letter-spacing:-.035em}
h3{font-size:22px}
.lead{font-size:clamp(17px,2vw,21px);color:var(--ink-2);max-width:760px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.hero-art{position:relative;min-height:450px}
.book-stack{position:absolute;inset:25px 0 0 35px}
.book-stack img{position:absolute;width:240px;border-radius:18px;box-shadow:0 30px 70px rgba(17,28,54,.25)}
.book-stack img:nth-child(1){left:0;top:44px;transform:rotate(-7deg)}
.book-stack img:nth-child(2){left:155px;top:0;transform:rotate(5deg)}
.book-stack img:nth-child(3){left:285px;top:105px;transform:rotate(11deg);width:190px}
.hero-badge{position:absolute;right:0;bottom:20px;background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);padding:16px 18px;border-radius:18px;width:230px}
.section{padding:70px 0}
.section-tight{padding:42px 0}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:28px}
.section-head p{margin:0;color:var(--muted);max-width:650px}
.grid{display:grid;gap:22px}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 8px 30px rgba(24,39,71,.055);overflow:hidden}
.card-body{padding:22px}
.book-card{display:flex;flex-direction:column;min-width:0}
.book-cover-wrap{aspect-ratio: .72;background:var(--surface-2);overflow:hidden;position:relative}
.book-cover-wrap img{width:100%;height:100%;object-fit:cover;transition:transform .25s ease}
.book-card:hover .book-cover-wrap img{transform:scale(1.025)}
.status{display:inline-flex;align-items:center;gap:6px;padding:5px 9px;border-radius:999px;font-size:11px;font-weight:900;background:var(--surface-2);color:var(--ink-2)}
.status-published{background:#e8f7f0;color:#11684e}
.status-coming_soon{background:#fff5df;color:#93600f}
.status-preparing{background:#edf1fb;color:#355da5}
.price{font-size:20px;font-weight:900;color:var(--brand)}
.book-meta{display:flex;gap:8px;flex-wrap:wrap;color:var(--muted);font-size:13px;margin:12px 0}
.category-card{padding:24px}
.category-icon{width:48px;height:48px;border-radius:15px;background:var(--accent-soft);display:grid;place-items:center;font-size:22px;margin-bottom:18px}
.band{background:linear-gradient(135deg,var(--brand),#314d80);color:white;border-radius:34px;padding:42px}
[data-theme="dark"] .band{background:linear-gradient(135deg,#1c2a44,#0f1828)}
.band p{color:#dce5f5}
.steps{counter-reset:step;display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.step{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:20px}
.step:before{counter-increment:step;content:counter(step);display:grid;place-items:center;width:36px;height:36px;border-radius:50%;background:var(--accent);color:#172033;font-weight:900;margin-bottom:14px}
.author-card{text-align:center;padding:26px}
.author-card img{width:130px;height:130px;border-radius:28px;margin:0 auto 18px}
.article-card{padding:24px}
.article-date{font-size:13px;color:var(--muted);font-weight:700}
.footer{margin-top:70px;background:#101b31;color:#dce4f2;padding:56px 0 24px}
.footer .brand img{width:190px}
.footer-grid{display:grid;grid-template-columns:1.4fr .8fr .8fr;gap:34px}
.footer a{color:#dce4f2}
.footer small{color:#98a6bd}
.page-hero{padding:52px 0 24px}
.breadcrumb{color:var(--muted);font-size:14px;margin-bottom:14px}
.toolbar{display:flex;gap:12px;align-items:center;flex-wrap:wrap;background:var(--surface);padding:14px;border:1px solid var(--line);border-radius:18px;margin-bottom:24px}
.input,.select,.textarea{width:100%;border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:13px;padding:12px 14px;outline:0}
.input:focus,.select:focus,.textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px color-mix(in srgb,var(--brand) 15%,transparent)}
.toolbar .input{flex:1;min-width:220px}
.toolbar .select{width:auto;min-width:170px}
.detail-grid{display:grid;grid-template-columns:420px 1fr;gap:48px;align-items:start}
.cover-gallery{position:sticky;top:100px}
.cover-main{background:var(--surface);border:1px solid var(--line);padding:18px;border-radius:28px;box-shadow:var(--shadow)}
.cover-main img{border-radius:18px;width:100%}
.thumb-row{display:flex;gap:10px;margin-top:12px}
.thumb{border:2px solid transparent;border-radius:12px;padding:4px;background:var(--surface);width:74px}
.thumb.active{border-color:var(--accent)}
.specs{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:18px;overflow:hidden;margin:22px 0}
.spec{background:var(--surface);padding:14px 16px}
.spec b{display:block;font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.06em}
.qty{display:flex;align-items:center;gap:8px}
.qty button{width:36px;height:36px;border:1px solid var(--line);background:var(--surface);border-radius:10px}
.form-card{padding:28px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-group label{display:block;font-size:13px;font-weight:800;margin-bottom:7px}
.help{font-size:12px;color:var(--muted);margin-top:6px}
.required{color:var(--danger)}
.notice{padding:14px 16px;border-radius:14px;background:var(--surface-2);color:var(--ink-2);border:1px solid var(--line)}
.notice-warning{background:#fff7e7;color:#7b520e;border-color:#f1d69d}
.notice-success{background:#eaf8f2;color:#11684e;border-color:#b9e7d3}
.auth-shell{min-height:calc(100vh - var(--nav-h));display:grid;grid-template-columns:1fr 1fr}
.auth-info{padding:70px clamp(30px,6vw,90px);background:linear-gradient(145deg,#152440,#2a416d);color:#fff;display:flex;flex-direction:column;justify-content:center}
.auth-form-side{padding:60px clamp(28px,7vw,100px);display:flex;align-items:center}
.auth-card{width:min(100%,520px);margin:auto}
.auth-list{display:grid;gap:14px;margin:28px 0}
.auth-point{display:flex;gap:12px;align-items:start}
.captcha-box{display:flex;align-items:center;gap:10px}
.captcha-challenge{flex:1;background:var(--surface-2);border:1px dashed var(--line);padding:12px 14px;border-radius:13px;font-weight:900;letter-spacing:.04em}
.otp-channels{display:flex;gap:8px;flex-wrap:wrap}
.otp-chip{border:1px solid var(--line);background:var(--surface);padding:8px 10px;border-radius:999px;font-size:12px;font-weight:800}
.otp-chip.disabled{opacity:.45}
.dashboard-shell{display:grid;grid-template-columns:270px 1fr;min-height:calc(100vh - var(--nav-h))}
.sidebar{background:var(--surface);border-right:1px solid var(--line);padding:22px 14px;position:sticky;top:var(--nav-h);height:calc(100vh - var(--nav-h))}
.side-title{font-size:12px;color:var(--muted);font-weight:900;text-transform:uppercase;padding:8px 10px}
.side-link{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:12px;font-weight:750;color:var(--ink-2);margin:2px 0}
.side-link.active,.side-link:hover{background:var(--surface-2);color:var(--brand)}
.dashboard-content{padding:28px;min-width:0}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:24px}
.stat{padding:20px}
.stat-value{font-size:32px;font-weight:900}
.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:18px;background:var(--surface)}
table{width:100%;border-collapse:collapse;min-width:780px}
th,td{padding:13px 14px;text-align:left;border-bottom:1px solid var(--line);font-size:14px}
th{font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);background:var(--surface-2)}
.kebab{width:34px;height:34px;border:0;background:var(--surface-2);border-radius:10px}
.timeline{border-left:2px solid var(--line);padding-left:22px;margin-left:8px}
.timeline-item{position:relative;padding-bottom:20px}
.timeline-item:before{content:"";position:absolute;width:12px;height:12px;border-radius:50%;background:var(--accent);left:-29px;top:6px}
.empty{text-align:center;padding:50px 20px;color:var(--muted)}
.toast{position:fixed;right:20px;bottom:20px;z-index:100;background:var(--ink);color:var(--surface);padding:13px 16px;border-radius:14px;box-shadow:var(--shadow);max-width:360px;animation:toast-in .2s ease}
@keyframes toast-in{from{transform:translateY(10px);opacity:0}to{transform:none;opacity:1}}
.mobile-bar{display:none}
.menu-open .nav-links{display:flex}
@media(max-width:980px){
  .nav-toggle{display:grid}.nav-links{display:none;position:absolute;top:76px;left:16px;right:16px;background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:10px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
  .nav-actions .btn-outline{display:none}
  .hero-grid,.detail-grid,.grid-2{grid-template-columns:1fr}
  .hero-art{min-height:360px}.book-stack{transform:scale(.8);transform-origin:left top}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .detail-grid{gap:28px}.cover-gallery{position:static;max-width:480px;margin:auto}
  .auth-shell{grid-template-columns:1fr}.auth-info{padding:46px 28px}.auth-form-side{padding:36px 24px}
  .dashboard-shell{grid-template-columns:1fr}.sidebar{display:none}.dashboard-content{padding:20px}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:640px){
  :root{--nav-h:68px}
  .container{width:min(calc(100% - 24px),var(--container))}
  .brand img{width:145px}
  .nav-wrap{gap:10px}.nav-actions{margin-left:auto}.nav-actions .btn-primary{display:none}
  .hero{padding:42px 0 24px}.hero-grid{gap:18px}.hero-art{min-height:290px}
  .book-stack{transform:scale(.58);left:12px;top:8px}
  .hero-badge{width:200px;right:0;bottom:0;font-size:13px}
  .section{padding:48px 0}.section-head{align-items:start;flex-direction:column}
  .grid-4,.grid-3{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .band{padding:28px;border-radius:24px}
  .form-grid,.specs{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .page-hero{padding-top:36px}
  h1{font-size:42px}
  .stat-grid{grid-template-columns:1fr 1fr}
  .mobile-bar{display:grid;grid-template-columns:repeat(4,1fr);position:fixed;bottom:0;left:0;right:0;z-index:60;background:var(--surface);border-top:1px solid var(--line);padding:7px 8px env(safe-area-inset-bottom)}
  .mobile-bar a{text-align:center;font-size:11px;font-weight:800;color:var(--muted)}
  body{padding-bottom:58px}
}

.band .step{color:var(--ink)}
.band .step p{color:var(--ink-2)}
.cta-row{display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}
.distribution-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.distribution-card{padding:22px}
.legal-strip{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;padding:22px;border:1px solid var(--line);background:var(--surface);border-radius:22px}
@media(max-width:760px){.distribution-grid{grid-template-columns:1fr}}