:root{--paper:#f4ead1;--paper2:#fffaf0;--ink:#392820;--muted:#746155;--red:#7a1f1f;--red2:#a64232;--gold:#c59a47;--green:#315c55;--line:#d8c59e;--shadow:0 10px 30px #4d29151a;--read-size:20px;--read-line:1.9;--read-width:760px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:"Times New Roman","Noto Serif CJK SC","Songti SC",serif;line-height:1.65;background-image:radial-gradient(#9d6c3d12 1px,transparent 1px);background-size:18px 18px}a{color:var(--red);text-decoration:none}button,input,select,textarea{font:inherit}.skip-link{position:fixed;left:8px;top:-100px;background:#fff;padding:8px;z-index:99}.skip-link:focus{top:8px}.site-header{position:sticky;top:0;z-index:30;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:10px max(20px,calc((100% - 1180px)/2));background:#f8efddeF;border-bottom:1px solid var(--line);backdrop-filter:blur(10px)}.brand{display:flex;align-items:center;gap:10px;color:var(--ink)}.brand-mark{display:grid;place-items:center;width:44px;height:44px;border-radius:50%;background:var(--red);color:#f7e7bd;border:2px solid var(--gold);font-size:25px}.brand strong{display:block;font-size:20px}.brand small{display:block;letter-spacing:.16em;color:var(--red);font-size:10px}.top-nav{display:flex;align-items:center;gap:18px}.top-nav a,.ghost-btn{font-size:15px}.ghost-btn,.btn{border:1px solid var(--line);background:#fff8e8;color:var(--ink);padding:8px 12px;border-radius:8px;cursor:pointer}.btn{background:var(--red);color:white;border-color:var(--red);display:inline-flex;align-items:center;justify-content:center;gap:6px}.btn.secondary{background:var(--green);border-color:var(--green)}.btn.pale{background:#fff8e8;color:var(--red);border-color:var(--line)}.btn.danger{background:#8b2c2c}.admin-link{border-left:1px solid var(--line);padding-left:18px}main{min-height:70vh}.hero{padding:62px 20px 36px;background:linear-gradient(130deg,#efe0bc,#f9f3e5 55%,#d9e4d9);border-bottom:1px solid var(--line)}.hero-inner{max-width:1180px;margin:auto;display:grid;grid-template-columns:1.25fr .75fr;gap:42px;align-items:center}.eyebrow{color:var(--red);letter-spacing:.2em;font-size:13px;font-weight:bold}.hero h1{font-size:clamp(38px,6vw,72px);line-height:1.05;margin:10px 0;color:#50251e}.hero p{font-size:19px;max-width:680px}.seal-panel{min-height:250px;border:1px solid var(--gold);border-radius:140px 140px 18px 18px;display:grid;place-items:center;background:#fff8e080;box-shadow:var(--shadow);position:relative}.seal-panel:before{content:"九尾藏書";writing-mode:vertical-rl;letter-spacing:.22em;font-size:37px;color:var(--red);border:3px double var(--red);padding:18px 10px}.search-bar{display:flex;gap:8px;max-width:720px}.search-bar input{flex:1;min-width:0}.field,input,select,textarea{width:100%;border:1px solid var(--line);border-radius:8px;background:#fffdf7;color:var(--ink);padding:10px 12px}.container{max-width:1180px;margin:auto;padding:34px 20px}.section-head{display:flex;justify-content:space-between;gap:20px;align-items:end;margin-bottom:18px}.section-head h2{margin:0;font-size:27px}.section-head p{margin:0;color:var(--muted)}.filters{display:grid;grid-template-columns:2fr repeat(4,1fr);gap:10px;padding:14px;background:#ead9b55e;border:1px solid var(--line);border-radius:12px;margin-bottom:22px}.book-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.book-card{display:grid;grid-template-columns:145px 1fr;gap:18px;padding:15px;background:#fff9ea;border:1px solid var(--line);border-radius:12px;box-shadow:0 6px 18px #5638150d;min-width:0}.book-card img{width:145px;aspect-ratio:2/3;object-fit:cover;border-radius:6px;background:#ddd}.book-card h3{margin:1px 0 5px;font-size:22px;line-height:1.25}.book-meta{display:flex;gap:6px;flex-wrap:wrap;color:var(--muted);font-size:14px}.tag{background:#ecdfc1;border:1px solid #d9c298;border-radius:99px;padding:2px 7px}.book-card p{margin:10px 0;font-size:15px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.progress-mini{height:5px;background:#e3d7bd;border-radius:9px;overflow:hidden}.progress-mini span{display:block;height:100%;background:var(--red)}.load-row{text-align:center;margin-top:24px}.guide{margin-top:42px;padding:24px;border:1px solid var(--line);background:#fff8e4;border-radius:12px}.guide ol{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;padding-left:24px}.story-hero{max-width:1050px;margin:35px auto;padding:0 20px;display:grid;grid-template-columns:240px 1fr;gap:32px}.story-hero img{width:100%;border-radius:8px;box-shadow:var(--shadow)}.story-hero h1{font-size:38px;line-height:1.15;margin:0 0 8px}.story-info{display:grid;grid-template-columns:140px 1fr;gap:5px 12px}.story-actions{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0}.synopsis{background:#fff8e8;border-left:4px solid var(--red);padding:16px}.toc{max-width:1050px;margin:0 auto 40px;padding:0 20px}.toc-search{max-width:460px;margin-bottom:12px}.chapter-list{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}.chapter-list a{background:#fffaf0;padding:11px 14px;display:flex;justify-content:space-between}.chapter-list a.read{color:#82756d}.reader-shell{--reader-bg:#fffdf6;--reader-ink:#312721;background:var(--reader-bg);color:var(--reader-ink);min-height:100vh;padding-bottom:70px}.reader-shell[data-theme=sepia]{--reader-bg:#efe1bd;--reader-ink:#463426}.reader-shell[data-theme=dark]{--reader-bg:#171a1a;--reader-ink:#e9dfca}.reading-progress{position:fixed;z-index:40;top:0;left:0;height:3px;background:var(--red);width:0}.reader-title{text-align:center;max-width:var(--read-width);margin:auto;padding:35px 18px 15px}.reader-title h1{font-size:28px}.reader-nav{display:flex;justify-content:center;gap:8px;flex-wrap:wrap;margin:10px auto 20px}.reader-controls{position:sticky;top:65px;z-index:20;max-width:950px;margin:auto;padding:9px;background:#f4ead1ed;border:1px solid var(--line);border-radius:10px;display:flex;gap:7px;justify-content:center;flex-wrap:wrap}.reader-controls button,.reader-controls select{width:auto;padding:6px 9px}.reader-content{max-width:var(--read-width);margin:25px auto;padding:0 20px;font-size:var(--read-size);line-height:var(--read-line);font-family:var(--read-font,"Times New Roman","Noto Serif CJK SC",serif)}.reader-content p{margin:0 0 1.25em;text-align:justify}.report-box{max-width:var(--read-width);margin:30px auto;padding:18px;border:1px dashed var(--red)}.site-footer{text-align:center;border-top:1px solid var(--line);padding:25px 18px;color:var(--muted);font-size:14px}.to-top{position:fixed;right:16px;bottom:18px;width:42px;height:42px;border-radius:50%;border:0;background:var(--red);color:white;box-shadow:var(--shadow);cursor:pointer}.toast{position:fixed;z-index:80;left:50%;bottom:24px;transform:translate(-50%,130px);background:#26201c;color:white;padding:10px 16px;border-radius:8px;transition:.25s}.toast.show{transform:translate(-50%,0)}.petal{position:fixed;z-index:25;top:-20px;color:#c97888;pointer-events:none;animation:fall linear forwards}@keyframes fall{to{transform:translate(12vw,105vh) rotate(520deg);opacity:.2}}dialog{max-width:620px;width:calc(100% - 30px);border:1px solid var(--line);border-radius:12px;background:#fff9ea;color:var(--ink);padding:22px}dialog::backdrop{background:#1a1410a8}.admin-shell{max-width:1200px;margin:30px auto;padding:0 20px}.login-card{max-width:460px;margin:8vh auto;padding:28px;border:1px solid var(--line);background:#fff9ea;border-radius:14px;box-shadow:var(--shadow)}.login-card h1{margin-top:0}.form-stack{display:grid;gap:12px}.admin-layout{display:grid;grid-template-columns:220px 1fr;gap:22px}.admin-menu{background:#4b3029;color:#fff7e8;border-radius:12px;padding:12px;height:max-content;position:sticky;top:85px}.admin-menu button{width:100%;display:block;text-align:left;color:inherit;background:transparent;border:0;border-bottom:1px solid #ffffff21;padding:11px;cursor:pointer}.admin-menu button.active{background:#7a1f1f}.admin-main{min-width:0}.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.stat{background:#fff9ea;border:1px solid var(--line);border-radius:10px;padding:17px}.stat strong{display:block;font-size:30px;color:var(--red)}.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:9px;background:#fff}table{border-collapse:collapse;width:100%;min-width:760px}th,td{text-align:left;border-bottom:1px solid #e6dcc7;padding:9px;font-size:14px}th{background:#efe1bd}.notice{padding:12px;background:#fff4ce;border:1px solid #d5b766;border-radius:8px}.sample-badge{color:#7a1f1f;font-weight:bold}.actions{display:flex;gap:6px;flex-wrap:wrap}.hidden{display:none!important}
@media(max-width:820px){.site-header{position:relative;display:block;text-align:center}.brand{justify-content:center}.top-nav{justify-content:center;flex-wrap:wrap;gap:10px;margin-top:8px}.hero{padding-top:35px}.hero-inner{grid-template-columns:1fr}.seal-panel{display:none}.filters{grid-template-columns:1fr 1fr}.filters input{grid-column:1/-1}.book-grid{grid-template-columns:1fr}.guide ol{grid-template-columns:1fr}.story-hero{grid-template-columns:160px 1fr}.admin-layout{grid-template-columns:1fr}.admin-menu{position:static;display:flex;overflow:auto}.admin-menu button{min-width:max-content}.stat-grid{grid-template-columns:1fr 1fr}.reader-controls{top:0;border-radius:0}.chapter-list{grid-template-columns:1fr}}
@media(max-width:520px){.top-nav a:nth-child(2){display:none}.hero h1{font-size:40px}.hero p{font-size:16px}.search-bar{display:grid;grid-template-columns:1fr auto}.filters{grid-template-columns:1fr}.book-card{grid-template-columns:96px 1fr;gap:12px;padding:10px}.book-card img{width:96px}.book-card h3{font-size:18px}.book-card p{display:none}.story-hero{grid-template-columns:105px 1fr;gap:15px}.story-hero h1{font-size:25px}.story-info{display:block}.story-info b{display:block;margin-top:5px}.story-hero .synopsis{grid-column:1/-1}.stat-grid{grid-template-columns:1fr}.reader-title{padding-top:20px}.reader-title h1{font-size:23px}.reader-content{padding:0 16px;text-align:left}.reader-content p{text-align:left}.site-footer{font-size:12px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}.petal{display:none}}

/* 1.0.4: bảng màu sáng và nhận diện Cáo Chín Đuôi */
:root{color-scheme:light;--paper:#fff6e7;--paper2:#fffdf8;--ink:#4b302a;--muted:#806861;--red:#a52d3c;--red2:#c84b5e;--gold:#d6a54d;--green:#527c70;--line:#e8cfa8;--shadow:0 10px 30px #8d49351f}
html{color-scheme:light}
body{background-color:#fff6e7!important;color:#4b302a!important;background-image:radial-gradient(#d6866e18 1px,transparent 1px)!important}
button,input,select,textarea{color-scheme:light}
.site-header{background:#fff8edef}
.brand-mark{width:48px;height:48px;background:linear-gradient(145deg,#ffe0bf,#ffc4b2);border:2px solid var(--gold);font-size:29px;box-shadow:0 4px 12px #bd6c5130}
.hero{background:linear-gradient(130deg,#ffe7cf,#fffaf1 52%,#e4f1e8)}
.hero h1{color:#763446}
.seal-panel{border-color:#e7b66b;border-radius:140px 140px 24px 24px;background:linear-gradient(160deg,#fffaf0,#ffe3d0)}
.seal-panel:before{content:"🦊";writing-mode:initial;letter-spacing:normal;font-size:100px;border:0;padding:0;filter:drop-shadow(0 8px 8px #a45d4830)}
.seal-panel:after{content:"CỬU VĨ TÀNG THƯ";position:absolute;bottom:22px;color:var(--red);font-size:14px;font-weight:bold;letter-spacing:.18em}
.book-card,.guide,.login-card,.stat{background:#fffdf8}
.filters{background:#f9dfcb99}