*{box-sizing:border-box}
:root{
  --bg:#04111f;
  --panel:#08182b;
  --card:rgba(255,255,255,.08);
  --card-strong:rgba(255,255,255,.12);
  --border:rgba(255,255,255,.12);
  --text:#ffffff;
  --muted:rgba(255,255,255,.65);
  --accent:#f7c948;
  --accent-2:#18c37e;
  --danger:#ff5b75;
  --shadow:0 20px 60px rgba(0,0,0,.35);
}
body{
  margin:0;
  font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  background:
    radial-gradient(circle at top,#10213a 0%,#040a14 55%,#02060c 100%);
  color:var(--text);
}
a{text-decoration:none;color:inherit}
button,input,textarea,select{font:inherit}
button{cursor:pointer}
img{max-width:100%;display:block}

.page-shell{max-width:1320px;margin:0 auto;padding:20px}
.desktop-panel{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:rgba(255,255,255,.06);border:1px solid var(--border);
  border-radius:28px;padding:18px 22px;margin-bottom:18px;box-shadow:var(--shadow)
}
.desktop-panel h1{margin:0 0 6px;font-size:28px}
.desktop-panel p{margin:0;color:var(--muted);max-width:760px;line-height:1.6}
.desktop-actions{display:flex;gap:10px;flex-wrap:wrap}

.flash{
  margin:0 auto 16px;max-width:540px;border-radius:16px;padding:12px 16px;
  border:1px solid var(--border);box-shadow:var(--shadow)
}
.flash-success{background:rgba(24,195,126,.14);color:#cffff0}
.flash-error{background:rgba(255,91,117,.14);color:#ffd2db}

.mobile-frame{
  position:relative;width:100%;max-width:390px;min-height:820px;margin:0 auto;
  border:1px solid var(--border);border-radius:38px;overflow:hidden;
  background:linear-gradient(180deg,rgba(13,27,46,.92),rgba(4,12,22,.96));
  box-shadow:var(--shadow)
}
.phone-status{
  position:relative;z-index:2;display:flex;justify-content:space-between;
  padding:16px 18px 8px;font-size:13px;color:rgba(255,255,255,.8)
}
.screen{position:relative;z-index:2;padding:8px 14px 92px;min-height:760px}
.login-screen{display:flex;align-items:center}
.login-card{width:100%}
.glass-card{
  background:var(--card);border:1px solid var(--border);backdrop-filter:blur(16px);
  border-radius:28px;padding:18px;box-shadow:var(--shadow)
}
.brand-row{display:flex;align-items:center;gap:14px}
.logo-box{
  width:58px;height:58px;border-radius:20px;background:linear-gradient(135deg,var(--accent),#ffec99);
  display:grid;place-items:center;overflow:hidden;flex-shrink:0
}
.logo-image{width:100%;height:100%;object-fit:cover}
.logo-emoji{font-size:28px}
.brand-title{display:flex;flex-direction:column}
.brand-title strong{font-size:20px}
.brand-title span{font-size:12px;color:var(--muted)}
.login-card h2{font-size:30px;line-height:1.15;margin:18px 0 10px}
.muted{color:var(--muted)}
.tiny{font-size:12px;color:var(--muted)}
.install-banner{
  margin:16px 0;padding:14px;border-radius:22px;
  background:rgba(247,201,72,.12);border:1px solid rgba(247,201,72,.2)
}
.install-banner strong,.install-banner span{display:block}
.install-banner span{margin-top:6px;font-size:13px;color:#ffeeb3;line-height:1.5}
.auth-grid{display:grid;gap:14px;margin-top:12px}
.auth-box{
  background:rgba(255,255,255,.05);border:1px solid var(--border);
  border-radius:24px;padding:14px
}
.auth-box h3{margin:0 0 12px;font-size:18px}
.auth-box input,.chat-form input,.search-box input,textarea,select{
  width:100%;background:rgba(3,10,18,.8);color:#fff;border:1px solid var(--border);
  border-radius:16px;padding:12px 14px;outline:none;margin-top:10px
}
.auth-box input::placeholder,.chat-form input::placeholder,.search-box input::placeholder,textarea::placeholder{
  color:rgba(255,255,255,.35)
}
.primary-btn,.soft-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;border-radius:18px;border:1px solid transparent;padding:12px 16px;
  font-weight:700;transition:.2s transform,.2s opacity,.2s background
}
.primary-btn:hover,.soft-btn:hover{transform:translateY(-1px)}
.primary-btn{background:var(--accent);color:#111827}
.primary-btn.icon{width:52px;padding:0}
.wide,.full{width:100%;margin-top:10px}
.soft-btn{
  background:rgba(255,255,255,.08);color:#fff;border-color:var(--border)
}
.soft-btn.danger{background:rgba(255,91,117,.12);color:#ffd6de}
.lang-switch{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px}
.lang-switch a{
  min-width:48px;text-align:center;padding:8px 12px;border-radius:999px;
  background:rgba(255,255,255,.08);color:var(--muted);border:1px solid var(--border)
}
.lang-switch a.active{background:var(--accent);color:#111827;border-color:transparent}

.hero-row,.section-head,.announcement-top,.setting-row,.chat-head,.desktop-actions{
  display:flex;align-items:center;justify-content:space-between;gap:10px
}
.hero-row h2,.section-head h2{margin:4px 0 0;font-size:38px;line-height:1.05}
.section-head{margin:18px 0 12px}
.section-head h3{margin:0;font-size:20px}
.section-head span,.announcement-top time,.chat-head span,.setting-row span{color:var(--muted);font-size:13px}
.top-gap{margin-top:8px}
.icon-btn{
  width:46px;height:46px;border:none;border-radius:18px;background:rgba(255,255,255,.1);
  color:#fff;display:grid;place-items:center
}
.search-box{
  display:flex;align-items:center;gap:10px;background:rgba(255,255,255,.07);
  border:1px solid var(--border);border-radius:22px;padding:0 14px;margin:10px 0 16px
}
.search-box input{margin:0;border:none;background:transparent;padding-left:0}
.ghost-filter,.mini-close{
  border:none;background:transparent;color:#fff;font-size:16px
}
.push-card{
  display:flex;align-items:flex-start;justify-content:space-between;gap:10px;
  padding:13px 14px;border-radius:22px;background:rgba(247,201,72,.1);
  border:1px solid rgba(247,201,72,.16);margin-bottom:18px
}
.push-card strong,.push-card span{display:block}
.push-card span{margin-top:4px;font-size:13px;color:#ffe7a3}
.rules-card ul{margin:12px 0 0;padding-left:18px;color:var(--muted);line-height:1.7}
.badge{
  display:inline-flex;align-items:center;justify-content:center;padding:5px 10px;
  border-radius:999px;background:rgba(247,201,72,.12);color:#ffe79a;font-size:12px;font-weight:700
}
.badge.important{background:rgba(255,91,117,.12);color:#ffd0d9}

.book-grid{display:grid;gap:12px}
.book-grid.three-cols{grid-template-columns:repeat(3,minmax(0,1fr))}
.book-grid.two-cols{grid-template-columns:repeat(2,minmax(0,1fr))}
.book-card{
  text-align:left;color:#fff;border:none;padding:0;background:transparent
}
.book-card strong,.book-card span,.book-card small{display:block}
.book-card strong{margin-top:10px;font-size:14px;line-height:1.35}
.book-card span{margin-top:4px;color:var(--muted);font-size:12px}
.book-card small{margin-top:6px;color:rgba(255,255,255,.72);font-size:11px}
.book-cover{
  aspect-ratio:3/4;border-radius:24px;background:linear-gradient(160deg,#1c3559,#0b1524);
  overflow:hidden;border:1px solid rgba(255,255,255,.08)
}
.book-cover img{width:100%;height:100%;object-fit:cover}
.continue-list{display:grid;gap:12px}
.continue-card{
  display:flex;align-items:center;gap:12px;text-align:left;border:none;width:100%;
  background:rgba(255,255,255,.07);border-radius:22px;padding:12px;color:#fff
}
.continue-card img{
  width:56px;height:78px;border-radius:16px;object-fit:cover;background:#0c1726
}
.continue-meta{flex:1;min-width:0}
.continue-meta strong,.continue-meta span{display:block}
.continue-meta strong{font-size:15px}
.continue-meta span{font-size:13px;color:var(--muted);margin-top:3px}
.continue-card em{font-style:normal;color:#ffd978;font-weight:700}
.progress-line{height:8px;background:rgba(255,255,255,.1);border-radius:999px;margin-top:10px;overflow:hidden}
.progress-line i{display:block;height:100%;background:linear-gradient(90deg,#1dd1a1,#f7c948);border-radius:999px}

.pill-row{display:flex;gap:8px;overflow:auto;padding-bottom:4px}
.pill{
  border:none;border-radius:999px;padding:10px 14px;color:#fff;background:rgba(255,255,255,.08);
  white-space:nowrap
}
.pill.active{background:var(--accent);color:#111827;font-weight:700}

.announcement-list{display:grid;gap:12px}
.announcement-card h3{margin:10px 0 8px;font-size:18px}
.announcement-card p{margin:0;color:var(--muted);line-height:1.65;font-size:14px}

.chat-wrap{display:grid;grid-template-rows:auto auto 1fr auto;gap:12px;min-height:700px}
.chat-head{justify-content:flex-start}
.chat-avatar{
  width:52px;height:52px;border-radius:18px;display:grid;place-items:center;
  background:linear-gradient(135deg,#5b8cff,#6b4cff);font-size:26px
}
.chat-head h3{margin:0 0 4px}
.chat-box{padding:14px;display:flex;flex-direction:column;gap:12px;overflow:auto;min-height:330px}
.chat-msg{
  max-width:82%;padding:12px 14px;border-radius:18px;line-height:1.6;font-size:14px
}
.chat-msg.bot{background:rgba(255,255,255,.08);align-self:flex-start}
.chat-msg.user{background:var(--accent);color:#111827;align-self:flex-end}
.chat-msg.librarian{background:rgba(24,195,126,.14);color:#d9fff1;align-self:flex-start;border:1px solid rgba(24,195,126,.16)}
.chat-form{display:grid;grid-template-columns:1fr 52px;gap:10px}

.profile-card,.info-card{margin-bottom:12px}
.info-card h3{margin:0 0 10px}
.info-block{padding:12px 0;border-top:1px solid rgba(255,255,255,.08);color:var(--muted);line-height:1.6}
.info-block:first-of-type{border-top:none;padding-top:0}
.toggle{position:relative;display:inline-block;width:56px;height:32px}
.toggle input{display:none}
.toggle i{
  position:absolute;inset:0;background:rgba(255,255,255,.12);border-radius:999px;transition:.2s
}
.toggle i::after{
  content:"";position:absolute;left:4px;top:4px;width:24px;height:24px;background:#fff;border-radius:50%;transition:.2s
}
.toggle input:checked + i{background:var(--accent)}
.toggle input:checked + i::after{transform:translateX(24px)}

.bottom-nav{
  position:absolute;left:0;right:0;bottom:0;z-index:4;
  display:grid;grid-template-columns:repeat(5,1fr);gap:6px;padding:10px 10px 14px;
  background:rgba(6,17,31,.92);backdrop-filter:blur(16px);border-top:1px solid var(--border)
}
.nav-btn{
  border:none;background:transparent;color:rgba(255,255,255,.56);
  display:flex;flex-direction:column;align-items:center;gap:4px;padding:8px 4px;border-radius:16px
}
.nav-btn span{font-size:11px}
.nav-btn.active{color:#ffd978;background:rgba(255,255,255,.05)}

.tab-section{display:none}
.tab-section.active{display:block}

.season-layer{position:absolute;inset:0;overflow:hidden;pointer-events:none}
.season-layer span{
  position:absolute;top:-28px;font-size:18px;opacity:.7;animation:fall 12s linear infinite
}
@keyframes fall{
  from{transform:translateY(-10px) rotate(0deg)}
  to{transform:translateY(920px) rotate(180deg)}
}

.book-modal[hidden]{display:none}
.book-modal{position:fixed;inset:0;z-index:999}
.book-modal__backdrop{position:absolute;inset:0;background:rgba(0,0,0,.72);backdrop-filter:blur(6px)}
.book-modal__dialog{
  position:relative;max-width:380px;margin:40px auto;background:#08182b;border:1px solid var(--border);
  border-radius:30px;padding:22px;box-shadow:var(--shadow);z-index:1
}
.modal-close{position:absolute;right:14px;top:14px}
.modal-cover{
  width:160px;height:220px;border-radius:24px;overflow:hidden;margin:14px auto;background:#0d1b2d
}
.modal-cover img{width:100%;height:100%;object-fit:cover}
.modal-format{
  text-align:center;display:inline-flex;margin:0 auto 10px;left:50%;transform:translateX(-50%);
  position:relative;padding:6px 12px;border-radius:999px;background:rgba(255,255,255,.08);color:#ffd978;font-size:12px
}
.book-modal__dialog h3{margin:0;text-align:center;font-size:28px;line-height:1.2}
.modal-author{margin:6px 0 12px;text-align:center;color:var(--muted)}
.modal-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:12px}
.modal-stats div{background:rgba(255,255,255,.05);border-radius:18px;padding:12px 8px;text-align:center}
.modal-stats strong,.modal-stats span{display:block}
.modal-stats strong{font-size:20px;color:#ffd978}
.modal-stats span{font-size:12px;color:var(--muted);margin-top:4px}
.modal-desc{color:var(--muted);line-height:1.7;font-size:14px}
.modal-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:14px}

@media (min-width:860px){
  .page-shell{display:grid;grid-template-columns:minmax(320px,390px) 1fr;gap:24px;align-items:start}
  .desktop-panel,.flash{grid-column:1/-1}
}
@media (max-width:600px){
  .page-shell{padding:10px}
  .desktop-panel{padding:16px;flex-direction:column;align-items:flex-start}
  .hero-row h2,.section-head h2{font-size:32px}
}

body.theme-light{
  --bg:#f2f7fb;
  --panel:#ffffff;
  --card:rgba(255,255,255,.9);
  --card-strong:#ffffff;
  --border:rgba(15,23,42,.08);
  --text:#0f172a;
  --muted:rgba(15,23,42,.62);
  background:linear-gradient(180deg,#e6f2ff,#f6fbff);
}
body.theme-light .desktop-panel,
body.theme-light .mobile-frame,
body.theme-light .glass-card,
body.theme-light .continue-card,
body.theme-light .search-box,
body.theme-light .push-card,
body.theme-light .book-modal__dialog,
body.theme-light .bottom-nav,
body.theme-light .auth-box,
body.theme-light .flash{
  color:#0f172a;
  background:rgba(255,255,255,.95);
  border-color:rgba(15,23,42,.08);
}
body.theme-light .muted,
body.theme-light .section-head span,
body.theme-light .tiny,
body.theme-light .announcement-card p,
body.theme-light .book-card span,
body.theme-light .book-card small,
body.theme-light .continue-meta span,
body.theme-light .auth-box input::placeholder,
body.theme-light .chat-form input::placeholder,
body.theme-light .search-box input::placeholder,
body.theme-light .modal-author,
body.theme-light .modal-desc,
body.theme-light .setting-row span,
body.theme-light .desktop-panel p{color:rgba(15,23,42,.62)}
body.theme-light .auth-box input,
body.theme-light .chat-form input,
body.theme-light .search-box input,
body.theme-light textarea,
body.theme-light select{background:#f8fbff;color:#0f172a;border-color:rgba(15,23,42,.08)}
body.theme-light .chat-msg.bot{background:#eef5ff;color:#0f172a}
body.theme-light .chat-msg.user{background:var(--accent);color:#111827}
body.theme-light .soft-btn{background:#f4f8fd;color:#0f172a;border-color:rgba(15,23,42,.08)}
body.theme-light .nav-btn{color:rgba(15,23,42,.5)}
body.theme-light .book-card,
body.theme-light .continue-card,
body.theme-light .announcement-card h3,
body.theme-light .section-head h3,
body.theme-light .section-head h2,
body.theme-light .hero-row h2,
body.theme-light .brand-title strong,
body.theme-light .chat-head h3,
body.theme-light .profile-card,
body.theme-light .info-card,
body.theme-light .book-modal__dialog h3{color:#0f172a}