:root {
  --ink:#243036; --muted:#728087; --paper:#fff; --bg:#f3f5f4;
  --primary:#6f93a3; --primary-dark:#527989; --pale:#e7eff1;
  --warm:#e8b875; --danger:#c95757; --line:#dfe6e6;
  --shadow:0 10px 35px rgba(48,75,83,.09); --radius:20px;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB",Arial,sans-serif;
  color:var(--ink); background:var(--bg); font-synthesis:none;
}
*{box-sizing:border-box} html{min-height:100%;background:var(--bg)} body{margin:0;min-height:100vh;background:linear-gradient(145deg,#f7f8f5 0,#eef3f3 100%);line-height:1.55}
button,input,textarea,select{font:inherit} button,a{touch-action:manipulation} a{color:inherit;text-decoration:none} img{max-width:100%}
button{border:0;cursor:pointer} button:disabled{cursor:not-allowed;opacity:.55}
:focus-visible{outline:3px solid rgba(111,147,163,.35);outline-offset:2px}
.shell{min-height:100vh}.topbar{height:72px;padding:0 max(22px,calc((100% - 1120px)/2));display:flex;align-items:center;justify-content:space-between;background:rgba(255,255,255,.9);border-bottom:1px solid rgba(111,147,163,.14);backdrop-filter:blur(14px);position:sticky;top:0;z-index:20}
.brand{display:flex;align-items:center;gap:11px}.brand-mark{width:42px;height:42px;display:grid;place-items:center;background:var(--pale);border-radius:14px;font-size:23px}.brand strong{display:block;font-size:16px;letter-spacing:.04em}.brand small{display:block;color:#91a0a4;font-size:10px;letter-spacing:.18em;text-transform:uppercase}
.desktop-nav{display:flex;gap:7px}.desktop-nav a{padding:8px 14px;border-radius:12px;color:var(--muted);font-size:14px}.desktop-nav a:hover,.desktop-nav a.active{background:var(--pale);color:var(--primary-dark);font-weight:600}
.main{width:min(1120px,calc(100% - 36px));margin:0 auto;padding:34px 0 56px}.bottom-nav{display:none}
.page-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:24px}.eyebrow{margin:0 0 5px;color:var(--primary);font-size:12px;font-weight:700;letter-spacing:.16em}.page-head h1,.hero h1{margin:0;font-family:Georgia,"Songti SC",serif;font-size:clamp(27px,4vw,42px);font-weight:600;line-height:1.2}.page-head p{margin:7px 0 0;color:var(--muted)}
.card{background:rgba(255,255,255,.96);border:1px solid rgba(101,137,145,.12);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}.card-title{display:flex;justify-content:space-between;align-items:center;gap:15px;margin-bottom:18px}.card-title h2,.card-title h3{margin:0;font-size:18px}.card-title a{color:var(--primary-dark);font-size:14px}
.hero{background:linear-gradient(120deg,#648b9b,#8dadb8);color:#fff;border-radius:28px;padding:40px clamp(25px,5vw,55px);position:relative;overflow:hidden;box-shadow:0 16px 42px rgba(69,107,121,.2);margin-bottom:24px}.hero:after{content:"";position:absolute;right:-60px;bottom:-120px;width:290px;height:290px;border:55px solid rgba(255,255,255,.08);border-radius:50%}.hero p{max-width:590px;margin:12px 0 22px;color:rgba(255,255,255,.86)}.hero-actions{display:flex;flex-wrap:wrap;gap:10px}.hero .btn-secondary{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.5)}
.btn{min-height:42px;padding:9px 18px;border-radius:999px;background:#edf1f2;color:var(--ink);font-weight:600;display:inline-flex;align-items:center;justify-content:center;gap:7px;transition:.18s}.btn:hover{transform:translateY(-1px)}.btn-primary{background:var(--primary);color:#fff;box-shadow:0 6px 18px rgba(82,121,137,.18)}.btn-primary:hover{background:var(--primary-dark)}.btn-secondary{background:#fff;color:var(--primary-dark);border:1px solid var(--primary)}.btn-danger{background:#fff1f1;color:var(--danger)}.btn-ghost{background:transparent;color:var(--primary-dark);padding-inline:7px}.btn-small{min-height:34px;padding:6px 12px;font-size:13px}.btn-block{width:100%}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(145px,1fr));gap:14px;margin-bottom:24px}.stat{padding:20px 22px;background:var(--paper);border-radius:18px;border:1px solid var(--line);box-shadow:0 5px 20px rgba(50,70,75,.04)}.stat b{display:block;color:var(--primary-dark);font-size:30px;line-height:1.2}.stat span{color:var(--muted);font-size:13px}
.home-grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(320px,.9fr);gap:22px}.shelf-grid{display:flex;flex-direction:column-reverse;gap:5px}.shelf-row{display:grid;grid-template-columns:30px repeat(3,1fr);gap:5px;align-items:center}.shelf-number{text-align:right;padding-right:5px;color:#9ba5a7;font-size:11px}.shelf-cell{height:29px;border:1px solid #e0e7e7;border-radius:6px;background:#f5f7f6;color:#fff;display:grid;place-items:center;font-size:11px}.shelf-cell.has{background:var(--primary);border-color:var(--primary)}.shelf-labels{display:grid;grid-template-columns:30px repeat(3,1fr);text-align:center;color:var(--muted);font-size:12px;margin-top:8px}.legend{display:flex;gap:14px;color:var(--muted);font-size:12px}.legend i{display:inline-block;width:10px;height:10px;border-radius:3px;background:#f1f4f4;border:1px solid #dce3e3;margin-right:4px}.legend i.has{background:var(--primary);border-color:var(--primary)}
.book-list{display:grid;gap:10px}.book-row{display:grid;grid-template-columns:52px 1fr auto;gap:13px;align-items:center;padding:10px;border-radius:13px}.book-row:hover{background:#f5f8f8}.mini-cover{width:52px;height:70px;border-radius:6px;object-fit:cover;background:linear-gradient(135deg,#e5eceb,#d0dcde);box-shadow:0 3px 8px rgba(0,0,0,.1)}.cover-placeholder{display:grid;place-items:center;color:#80979d;font-size:19px}.book-row h3{font-size:15px;margin:0 0 3px;line-height:1.35}.book-row p{font-size:12px;margin:0;color:var(--muted)}.location{font-size:12px;color:var(--primary-dark);white-space:nowrap}.unplaced{color:#bb7b43}
.toolbar{display:flex;gap:10px;margin-bottom:20px}.search-box{flex:1;position:relative}.search-box input{padding-right:44px}.search-box button{position:absolute;right:5px;top:5px;width:36px;height:36px;background:transparent;color:var(--primary-dark);border-radius:50%}
.input,.select,.textarea{width:100%;border:1px solid #d8e1e1;background:#fbfcfc;border-radius:13px;min-height:46px;padding:10px 13px;color:var(--ink);transition:.2s}.input:focus,.select:focus,.textarea:focus{border-color:var(--primary);box-shadow:0 0 0 4px rgba(111,147,163,.1);outline:0}.textarea{min-height:100px;resize:vertical}.label{display:block;margin:0 0 7px;font-size:13px;font-weight:650;color:#506066}.field{margin-bottom:17px}.help{margin:6px 0 0;color:var(--muted);font-size:12px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 18px}.form-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:22px}.required:after{content:" *";color:var(--danger)}
.books-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:17px}.book-card{background:#fff;border-radius:17px;border:1px solid var(--line);overflow:hidden;box-shadow:0 6px 24px rgba(56,75,80,.05);transition:.2s}.book-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}.book-cover{width:100%;aspect-ratio:4/5.3;object-fit:cover;background:linear-gradient(145deg,#edf2f1,#d7e2e3)}.book-card-body{padding:14px}.book-card h3{font-size:15px;line-height:1.4;margin:0 0 5px}.book-card p{color:var(--muted);font-size:12px;margin:0 0 9px}.tags{display:flex;flex-wrap:wrap;gap:6px}.tag{display:inline-flex;align-items:center;padding:3px 8px;border-radius:999px;background:var(--pale);color:var(--primary-dark);font-size:11px}.pagination{display:flex;align-items:center;justify-content:center;gap:14px;margin-top:26px}.pagination span{font-size:13px;color:var(--muted)}
.add-layout{display:grid;grid-template-columns:1fr 1.25fr;gap:22px}.add-methods{display:grid;gap:12px}.method{display:flex;align-items:center;gap:14px;text-align:left;width:100%;padding:17px;background:#f7f9f8;border:1px solid var(--line);border-radius:15px;color:var(--ink)}.method.active{border-color:var(--primary);background:var(--pale)}.method-icon{font-size:24px;width:38px;text-align:center}.method strong{display:block}.method small{color:var(--muted)}.cover-preview{display:flex;align-items:center;gap:13px}.cover-preview img{width:70px;height:92px;object-fit:cover;border-radius:8px;background:#edf1f1}.file-button{position:relative;overflow:hidden}.file-button input{position:absolute;inset:0;opacity:0;cursor:pointer}
.scanner{border-radius:18px;overflow:hidden;background:#172024;position:relative;aspect-ratio:4/3}.scanner video{width:100%;height:100%;object-fit:cover}.scan-frame{position:absolute;inset:18%;border:2px solid rgba(255,255,255,.8);border-radius:15px;box-shadow:0 0 0 999px rgba(0,0,0,.2)}.scanner-note{color:var(--muted);font-size:13px;margin-top:10px}.inline{display:flex;align-items:center;gap:10px}.inline .input{flex:1}
.detail-grid{display:grid;grid-template-columns:280px 1fr;gap:25px}.detail-cover{width:100%;max-height:390px;object-fit:contain;border-radius:14px;background:#edf2f1}.detail-title{font-family:Georgia,"Songti SC",serif;font-size:32px;line-height:1.3;margin:0 0 8px}.detail-author{color:var(--muted);margin:0 0 18px}.meta-list{display:grid;grid-template-columns:90px 1fr;gap:9px 12px;font-size:14px}.meta-list dt{color:var(--muted)}.meta-list dd{margin:0}.detail-sections{display:grid;gap:22px;margin-top:22px}.status-options{display:flex;flex-wrap:wrap;gap:9px}.status-options button.active{background:var(--primary);color:#fff}.member-line{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:12px 0;border-bottom:1px solid #edf1f1}.member-info{display:flex;align-items:center;gap:10px}.avatar{width:42px;height:42px;border-radius:50%;object-fit:cover;background:#e2eaeb}.stars{color:#d2d9da;letter-spacing:2px}.stars .on,.star-button.on{color:#e4a64d}.review{padding:16px 0;border-bottom:1px solid #edf1f1}.review p{margin:8px 0 0;font-size:14px}.star-input{display:flex;gap:6px}.star-button{font-size:29px;background:transparent;color:#d2d9da;padding:0}
.profile{display:grid;grid-template-columns:110px 1fr;gap:22px;align-items:center}.profile .avatar{width:100px;height:100px}.profile h1{margin:0 0 5px}.profile p{margin:0;color:var(--muted)}.profile-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:20px}.profile-stats div{background:#f5f8f7;border-radius:13px;text-align:center;padding:12px}.profile-stats b{display:block;color:var(--primary-dark);font-size:22px}.profile-stats span{font-size:12px;color:var(--muted)}
.admin-tabs{display:flex;gap:8px;margin-bottom:18px}.user-actions{display:flex;gap:7px;flex-wrap:wrap;justify-content:flex-end}.status-pill{border-radius:999px;padding:3px 9px;font-size:11px}.status-pending{background:#fff1d7;color:#9b6a1f}.status-active,.status-approved{background:#e4f2e8;color:#397047}.status-disabled,.status-rejected{background:#fbe8e8;color:#a34c4c}
.auth-root:empty{display:none}.auth-root{min-height:100vh;display:grid;place-items:center;padding:28px;background:radial-gradient(circle at 20% 20%,rgba(126,164,176,.16),transparent 38%),linear-gradient(145deg,#f9f8f3,#eaf0ef)}.auth-card{width:min(440px,100%);background:#fff;border-radius:26px;padding:34px;box-shadow:0 22px 70px rgba(53,84,93,.13);border:1px solid rgba(111,147,163,.15)}.auth-logo{text-align:center;margin-bottom:25px}.auth-logo span{font-size:45px}.auth-logo h1{font-family:Georgia,"Songti SC",serif;font-size:25px;margin:6px 0}.auth-logo p{margin:0;color:var(--muted);font-size:13px}.auth-tabs{display:grid;grid-template-columns:1fr 1fr;background:#f0f3f3;border-radius:12px;padding:4px;margin-bottom:22px}.auth-tabs button{padding:9px;background:transparent;border-radius:9px;color:var(--muted)}.auth-tabs button.active{background:#fff;color:var(--primary-dark);box-shadow:0 2px 8px rgba(0,0,0,.07);font-weight:650}.pending{text-align:center}.pending-mark{width:74px;height:74px;margin:0 auto 20px;display:grid;place-items:center;background:#fff3dc;border-radius:50%;font-size:32px}.pending h1{font-family:Georgia,"Songti SC",serif}.pending p{color:var(--muted)}
.empty{text-align:center;padding:55px 20px;color:var(--muted)}.empty-icon{font-size:40px;display:block;margin-bottom:8px}.loading{display:grid;place-items:center;min-height:240px;color:var(--muted)}.spinner{width:28px;height:28px;border:3px solid #d9e3e4;border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite;margin-bottom:10px}@keyframes spin{to{transform:rotate(360deg)}}
.toast{position:fixed;left:50%;bottom:90px;z-index:100;transform:translate(-50%,20px);background:#263337;color:#fff;padding:10px 17px;border-radius:999px;font-size:13px;opacity:0;pointer-events:none;transition:.25s;box-shadow:0 8px 30px rgba(0,0,0,.2)}.toast.show{opacity:1;transform:translate(-50%,0)}.toast.error{background:#a84848}
.modal-backdrop{position:fixed;inset:0;z-index:80;background:rgba(21,31,34,.47);display:grid;place-items:center;padding:20px}.modal{width:min(500px,100%);max-height:90vh;overflow:auto;background:#fff;border-radius:22px;padding:25px;box-shadow:0 22px 80px rgba(0,0,0,.25)}.modal h2{margin:0 0 17px}.modal-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:20px}
@media(max-width:850px){.books-grid{grid-template-columns:repeat(3,1fr)}.home-grid,.add-layout{grid-template-columns:1fr}.detail-grid{grid-template-columns:210px 1fr}.stats{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){body{padding-bottom:calc(68px + env(safe-area-inset-bottom))}.topbar{height:60px;padding:0 17px}.brand-mark{width:37px;height:37px;border-radius:12px}.brand small{display:none}.desktop-nav{display:none}.main{width:calc(100% - 26px);padding:22px 0 30px}.bottom-nav{display:flex;position:fixed;z-index:30;bottom:0;left:0;right:0;height:calc(64px + env(safe-area-inset-bottom));padding:5px 8px env(safe-area-inset-bottom);background:rgba(255,255,255,.96);border-top:1px solid var(--line);backdrop-filter:blur(15px);justify-content:space-around}.bottom-nav a{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;color:#849094;font-size:10px;gap:1px}.bottom-nav a span{font-size:22px;line-height:1}.bottom-nav a.active{color:var(--primary-dark);font-weight:700}.bottom-nav .nav-add span{width:39px;height:39px;margin-top:-18px;display:grid;place-items:center;background:var(--primary);color:#fff;border-radius:50%;box-shadow:0 5px 15px rgba(82,121,137,.3);font-size:26px}.bottom-nav .nav-add{padding-top:6px}.page-head{align-items:start}.page-head h1{font-size:28px}.hero{padding:28px 23px;border-radius:22px}.hero h1{font-size:29px}.hero p{font-size:14px}.card{padding:19px;border-radius:17px}.stats{gap:9px}.stat{padding:16px}.stat b{font-size:25px}.books-grid{grid-template-columns:repeat(2,1fr);gap:11px}.book-card-body{padding:11px}.toolbar{flex-wrap:wrap}.toolbar .search-box{flex-basis:100%}.form-grid{grid-template-columns:1fr}.detail-grid{grid-template-columns:100px 1fr;gap:17px}.detail-cover{max-height:155px}.detail-title{font-size:23px}.detail-grid .meta-list{grid-column:1/-1}.detail-grid .detail-actions{grid-column:1/-1}.profile{grid-template-columns:75px 1fr}.profile .avatar{width:72px;height:72px}.profile-stats{grid-column:1/-1}.member-line{align-items:flex-start}.user-actions{max-width:140px}.auth-card{padding:28px 23px}.toast{bottom:80px;max-width:90%;white-space:nowrap}.hide-mobile{display:none!important}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;animation-duration:.01ms!important;transition-duration:.01ms!important}}