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.cat-admin-card{max-width:none}.category-form{display:flex;gap:11px;margin-bottom:21px}.category-form input{flex:1}.category-manager{display:grid;gap:9px}.cat-manage-row{display:flex;align-items:center;gap:11px;justify-content:space-between;padding:12px 17px;border:1px solid var(--line);font-size:11px}.cat-manage-row button{border:none;background:transparent;color:#b76558}.preview-card{position:sticky;top:30px}.settings-preview{min-height:330px;background:var(--navy);color:#fff;display:flex;flex-direction:column;align-items:flex-start;justify-content:center;padding:45px 40px;position:relative;overflow:hidden}.settings-preview:after{content:'';position:absolute;border:1px solid #fff5c12e;width:290px;height:290px;right:-125px;bottom:-150px;border-radius:50%;box-shadow:0 0 0 34px #fff5c114}.settings-preview small{font-size:9px;letter-spacing:.14em;color:var(--gold)}.preview-line{width:43px;height:1px;background:var(--gold);margin:19px 0}.settings-preview h3{font:500 36px var(--serif);margin:0 0 18px}.settings-preview p{font-size:11px;color:#c5d5d7}.preview-button{padding:10px 15px;background:var(--gold);color:#243431;font-size:9px;font-weight:800;margin-top:15px}.about-grid{padding-top:100px;padding-bottom:115px;display:grid;grid-template-columns:1fr 1.2fr;align-items:center;gap:80px}.about-ornament{min-height:370px;background:var(--navy);color:var(--gold);display:flex;align-items:center;justify-content:center;flex-direction:column;border:17px solid #e9e3d5}.about-ornament>span{font:150px var(--serif)}.about-ornament small{letter-spacing:.2em}.about-grid h2{margin:15px 0 22px}.about-grid h2 em{color:var(--accent)}.about-grid p{font-size:12px;color:#76878a;margin-bottom:30px}.toast{position:fixed;right:25px;bottom:25px;background:var(--navy);color:white;max-width:min(460px,calc(100vw - 40px));padding:15px 20px;z-index:250;font-size:12px;box-shadow:0 20px 60px #0002;opacity:0;pointer-events:none;transform:translateY(15px);transition:opacity .2s,transform .2s}.toast.visible{opacity:1;transform:translateY(0)}.toast.error{background:#803c3d}.modal{border:1px solid var(--line);box-shadow:0 40px 120px #0005;width:min(490px,calc(100vw - 30px));padding:28px}.modal::backdrop{background:#0d2638b3}.modal-head{display:flex;align-items:center;justify-content:space-between}.modal-head h3{font:500 27px var(--serif);margin:0}
/* IMMERSIVE READER — strict screen-fit. Stage never causes outer vertical scrolling. */
body.reader-open{overflow:hidden!important}.reader{position:fixed;inset:0;z-index:200;display:flex;flex-direction:column;background:#0b1b24;color:#eaf1f1;width:100vw;height:100vh;height:100dvh;overflow:hidden;overscroll-behavior:contain}.reader-top{height:68px;flex:0 0 68px;display:flex;align-items:center;justify-content:space-between;gap:20px;background:#102934;border-bottom:1px solid #ffffff20;padding:0 clamp(16px,3vw,42px);position:relative;z-index:3}.reader-identity{display:flex;align-items:center;gap:12px;min-width:0}.reader-monogram{display:grid;place-items:center;border:1px solid #caad73;width:35px;height:35px;font:20px var(--serif);color:#e0c083}.reader-identity>div:last-child{min-width:0}.reader-identity small{color:#cbae76;display:block;font-size:8px;letter-spacing:.16em}.reader-identity strong{font-size:11px;display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:50vw}.reader-top-actions{display:flex;align-items:center;gap:10px}.reader-mode-label{font-size:9px;letter-spacing:.16em;color:#90b0b0;margin-right:12px}.reader-icon-btn{border:1px solid #ffffff29;color:#e2ebeb;background:#ffffff0b;border-radius:5px;width:38px;height:38px;display:grid;place-items:center;font-size:19px}.reader-icon-btn:hover{background:#ffffff1e}.reader-icon-btn.close{color:#f5dfb8}.reader-shell{flex:1 1 0;min-height:0;display:flex;overflow:hidden;padding:8px 12px;background:radial-gradient(ellipse at 50% 50%,#29444f 0%,#142b35 52%,#0a1c27 100%);position:relative}.reader-stage{height:100%;width:100%;min-width:0;min-height:0;display:flex;align-items:center;justify-content:center;overflow:hidden;position:relative;isolation:isolate}.stage-ambient{position:absolute;pointer-events:none;top:5%;bottom:5%;left:20%;right:20%;background:radial-gradient(ellipse,#d2ae7827,transparent 72%);filter:blur(20px)}.flip-mount{flex:none;position:relative;display:flex;align-items:center;justify-content:center;margin:auto;overflow:visible;filter:drop-shadow(0 19px 23px #0008);max-width:100%;max-height:100%}.flip-pages{width:100%;height:100%;position:relative}.flip-sheet{background:#fffdf9;overflow:hidden;box-sizing:border-box}.page-image{width:100%;height:100%;display:block;object-fit:contain;background:#fff}.pdf-page-placeholder{width:100%;height:100%;background:linear-gradient(110deg,#fffdf9,#f1eee6,#fffdf9);display:grid;place-items:center;color:#9c9686;font:14px var(--serif)}.demo-sheet-content{height:100%;width:100%;padding:11% 9%;box-sizing:border-box;background:#fffdf8;color:#33484e;display:flex;flex-direction:column;justify-content:space-between;overflow:hidden;position:relative}.demo-sheet-content:before{content:'';position:absolute;inset:5%;border:1px solid #d2c3a17d;pointer-events:none}.demo-sheet-content .demo-overline{font-size:clamp(8px,1.2vh,12px);letter-spacing:.17em;color:#aa8a4e}.demo-sheet-content h2{font:500 clamp(18px,3vh,40px)/1.2 var(--serif);color:#153842;margin:16px 0}.demo-sheet-content p{font-size:clamp(9px,1.35vh,14px);line-height:1.85}.demo-sheet-content .demo-folio{border-top:1px solid #d9d3c7;font:11px var(--serif);padding-top:10px;color:#998760}.demo-sheet-content.demo-cover{background:linear-gradient(150deg,#21404b,#102634);color:#e7cf9b;align-items:center;justify-content:center;text-align:center}.demo-sheet-content.demo-cover:before{border-color:#c5a56d}.demo-cover .demo-overline{color:#e6d09c}.demo-cover h2{color:#fff8e9;font-size:clamp(23px,3.4vh,44px)}.demo-cover .demo-folio{color:#e4c68c}.reader-overlay{position:absolute;z-index:10;inset:0;display:flex;align-items:center;justify-content:center;flex-direction:column;background:#0a1d2bed;gap:16px;text-align:center;padding:20px}.reader-overlay p{color:#e5e9e6;font-size:12px}.loading-ring{width:42px;height:42px;border:3px solid #ffffff2b;border-top-color:var(--gold);border-radius:50%;animation:spin 1s linear infinite}.reader-bottom{height:74px;flex:0 0 74px;background:#102934;border-top:1px solid #ffffff24;display:flex;align-items:center;gap:24px;padding:0 clamp(16px,3vw,42px);position:relative;z-index:3;min-width:0}.reader-bottom-left,.reader-bottom-right{display:flex;align-items:center;gap:13px;flex-shrink:0}.reader-bottom-mid{flex:1;display:flex;align-items:center;min-width:0}.reader-progress-track{height:2px;width:100%;display:block;background:#58737c}.reader-progress-track span{height:2px;display:block;background:#dfbd7c;width:0;transition:width .35s}.reader-round{border:1px solid #567079;background:transparent;border-radius:50%;color:#fff;width:35px;height:35px;font-size:18px}.reader-round:disabled{opacity:.25;cursor:not-allowed}.reader-round:not(:disabled):hover{background:#ffffff17}.reader-bottom-left>span{font:12px var(--serif);white-space:nowrap;width:85px;text-align:center}.reader-jump{display:flex;gap:8px;align-items:center;color:#a5bdc1;font-size:10px}.reader-jump input{width:52px;height:34px;background:#071f2b;border:1px solid #526e74;color:#fff;text-align:center;border-radius:4px;appearance:textfield}.reader-jump input::-webkit-inner-spin-button{appearance:none}.reader-text-btn{color:#ead4a7;background:transparent;border:0;font-size:11px;white-space:nowrap}.reader-bottom-right select{background:#183843;border:1px solid #506b6f;color:#eef3ed;border-radius:3px;padding:8px 10px;font-size:10px}.reader-zoom-area{position:absolute;inset:0;z-index:8;overflow:auto;background:#172d38;display:flex;align-items:flex-start;justify-content:center;padding:70px 20px 40px}.reader-zoom-area img{max-width:none;max-height:none;display:block;background:white;box-shadow:0 15px 45px #0006}.reader-zoom-close{position:absolute;z-index:11;right:22px;top:15px;background:var(--gold);color:#152832;border:0;border-radius:5px;padding:10px 16px;font-size:11px;font-weight:700}.reader-zoom-area .zoom-doc{margin:auto}.reader-body-no-scroll{overflow:hidden}
@keyframes floatBook{0%,100%{transform:rotateY(-20deg) rotateX(5deg) rotateZ(4deg) translateY(0)}50%{transform:rotateY(-17deg) rotateX(4deg) rotateZ(3deg) translateY(-13px)}}@keyframes spin{to{transform:rotate(360deg)}}
@media(max-width:1120px){.topbar{padding:12px 26px}.hero-content{padding-left:45px}.hero h1{font-size:63px}.doc-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.intro-band{gap:40px}.floating-label{display:none}}
@media(max-width:850px){.container{padding-left:23px;padding-right:23px}.topbar{min-height:75px}.main-nav{gap:16px}.hero{grid-template-columns:1fr 0.7fr;min-height:560px}.hero-content{padding:85px 0 50px 30px}.hero h1{font-size:clamp(40px,6vw,60px)}.hero-art{transform:scale(.75)}.hero-bottom{font-size:9px}.category-grid{grid-template-columns:repeat(2,1fr)}.doc-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.admin-cols{grid-template-columns:1fr}.preview-card{position:static}.footer-main{gap:28px}.reader-bottom{gap:15px}.reader-jump{display:none}}
@media(max-width:640px){.container{padding-left:18px;padding-right:18px}.topbar{padding:9px 16px;min-height:68px}.brand{min-width:0}.brand-symbol{height:40px;width:40px;font-size:17px}.brand-copy b{font-size:7px}.brand-copy strong{font-size:11px}.main-nav{display:none;position:absolute;top:100%;left:0;right:0;background:#fffdf9;box-shadow:0 18px 26px #0002;padding:10px 22px;flex-direction:column;align-items:stretch}.main-nav.open{display:flex}.main-nav a{padding:8px}.mobile-menu{display:grid}.nav-admin{display:none}.search-toggle{display:none}.hero{grid-template-columns:1fr;min-height:720px}.hero-content{padding:65px 26px 20px}.hero h1{font-size:clamp(45px,10vw,67px);margin-top:21px}.hero-lead{font-size:11px}.hero-actions{margin:27px 0}.hero-actions .button{padding:12px 16px;gap:13px}.hero-bottom{display:none}.hero-art{height:285px;transform:scale(.68);margin-top:-24px;overflow:visible}.book-display{transform-origin:center;animation:none}.book-display-cover{box-shadow:inset 5px 0 16px #020d1b,inset 0 0 0 12px #ebce9020}.hero-number{bottom:12px}.marquee-line{justify-content:flex-start;gap:26px}.intro-band{padding-top:68px;display:block;padding-bottom:40px}.intro-band h2,.section-heading h2{font-size:34px}.intro-aside{margin-top:25px}.stats-strip{gap:0;justify-content:space-between;padding-bottom:60px}.stats-strip b{font-size:36px}.stats-strip span{font-size:8px}.stats-strip i{height:35px}.block-section{padding-top:46px;padding-bottom:64px}.category-grid{gap:10px}.category-tile{padding:17px;min-height:175px}.category-tile h3{font-size:19px;margin-top:34px}.doc-grid{gap:11px}.doc-cover{padding:15px}.doc-cover strong{font-size:19px}.doc-meta{padding:12px}.doc-meta h3{font-size:15px;min-height:43px}.doc-meta p{font-size:9px}.doc-actions button{font-size:9px}.section-heading{align-items:start}.section-heading>.text-link{font-size:9px;gap:5px;align-self:center;white-space:nowrap}.cta-band{padding:70px 25px}.footer-main{grid-template-columns:1fr;gap:21px;padding-top:44px;padding-bottom:35px}.footer-bottom{gap:14px;flex-direction:column}.page-banner{padding:58px 17px}.page-banner h1{font-size:49px}.library-content{padding-top:23px}.library-tools{flex-direction:column}.library-tools>select{width:100%;min-height:44px}.reader-hint{display:none}.about-grid{grid-template-columns:1fr;gap:34px;padding-top:55px;padding-bottom:65px}.about-ornament{min-height:280px}.about-ornament>span{font-size:95px}.admin-layout{padding-top:30px}.login-card{padding:24px}.admin-metrics{gap:7px}.admin-metrics>div{padding:12px}.admin-metrics strong{font-size:25px}.admin-metrics small{font-size:7px}.admin-card{padding:17px}.category-form{flex-direction:column}.admin-tabs button{padding:13px;font-size:10px}.reader-top{height:60px;flex-basis:60px;padding:0 12px}.reader-monogram{width:30px;height:30px;font-size:17px}.reader-identity strong{font-size:10px;max-width:47vw}.reader-identity small{font-size:7px}.reader-mode-label{display:none}.reader-top-actions{gap:5px}.reader-icon-btn{width:34px;height:34px}.reader-shell{padding:5px}.reader-bottom{height:67px;flex-basis:67px;padding:0 9px;gap:8px;justify-content:space-between}.reader-bottom-left,.reader-bottom-right{gap:6px}.reader-round{width:32px;height:32px}.reader-bottom-left>span{font-size:10px;width:71px}.reader-bottom-mid{display:none}.reader-text-btn{font-size:10px}.reader-bottom-right select{padding:6px 2px;max-width:82px;font-size:9px}.reader-zoom-area{padding:64px 10px 20px}}
@media(max-height:640px){.reader-top{height:49px;flex-basis:49px}.reader-bottom{height:54px;flex-basis:54px}.reader-shell{padding:3px}.reader-identity small{display:none}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;animation-duration:.001ms!important;transition-duration:.001ms!important}}

/* === V5.1 ACCESSIBLE ONE-PAGE READER: khong thay doi giao dien/quan tri === */
.reader-top{height:54px;flex:0 0 54px;padding:0 18px}
.reader-identity strong{font-size:clamp(12px,1.3vw,17px);max-width:min(60vw,730px)}
.reader-identity small{font-size:10px;letter-spacing:.09em}
.reader-mode-label{display:inline-flex;margin-right:2px;padding:6px 10px;border:1px solid #d8bd8740;border-radius:20px;color:#f2d7a8;font-size:10px;letter-spacing:.06em;white-space:nowrap}
.reader-shell{padding:3px 6px}
.reader-bottom{min-height:66px;height:66px;flex:0 0 66px;padding:6px clamp(10px,2vw,26px);gap:14px;justify-content:space-between}
.reader-pagination,.reader-reading-tools,.reader-extras{display:flex;align-items:center;gap:7px;min-width:0}
.reader-pagination{flex:0 0 auto}
.reader-counter{min-width:75px;text-align:center;color:#fff;font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;white-space:nowrap}
.reader-round{width:auto;min-width:49px;height:42px;border-radius:9px;padding:0 13px;font-size:16px;font-weight:700;display:flex;align-items:center;justify-content:center;gap:7px;border-color:#789499;color:#f7fcfb}
.reader-round span{font-size:12px;font-weight:600}
.reader-round:not(:disabled):hover{background:#365660}
.reader-reading-tools{background:#ffffff0b;border:1px solid #ffffff25;border-radius:12px;padding:5px 7px;gap:5px}
.reader-tools-caption{font-size:10px;font-weight:700;color:#cfdbc9;letter-spacing:.05em;padding:0 5px;white-space:nowrap}
.reader-size-btn{min-width:48px;height:42px;border-radius:8px;border:1px solid #8ca1a267;color:#fff;background:#ffffff10;font-weight:800;font-size:18px;line-height:1}
.reader-size-btn.emphasized{background:#e9cd94;color:#213543;border-color:#e9cd94}
.reader-size-btn:disabled,.reader-fit-btn:disabled{opacity:.45;cursor:not-allowed}
.reader-zoom-percent{font-weight:700;font-size:13px;min-width:47px;text-align:center;font-variant-numeric:tabular-nums}
.reader-fit-btn{height:42px;padding:0 12px;background:#ecf2ee;color:#14313a;font-weight:700;font-size:12px;border:0;border-radius:8px;white-space:nowrap}
.reader-extras{gap:10px}
.reader-speed-label{display:flex;gap:7px;align-items:center;font-size:11px;color:#baccd0;white-space:nowrap}
.reader-speed-label select{background:#183843;border:1px solid #667d7f;color:#fff;border-radius:7px;font-size:12px;padding:9px 5px;max-width:100px}
.reader-jump{white-space:nowrap;font-size:11px}
.reader-jump input{width:55px;height:40px;font-size:14px}
.reader-zoom-area{position:absolute;inset:0;z-index:8;overflow:auto;display:block;padding:10px 16px 22px;background:#243b47;overscroll-behavior:contain;cursor:grab;scrollbar-color:#a9bcba #223942}
.reader-zoom-area.dragging{cursor:grabbing;user-select:none}
.reader-zoom-holder{display:flex;align-items:flex-start;justify-content:center;min-height:100%;box-sizing:border-box;margin:0 auto}
.reader-zoom-page{flex:none;overflow:hidden;background:#fffdf9;box-shadow:0 12px 36px #071923ab;position:relative}
.reader-zoom-page img{display:block;width:100%;height:100%;object-fit:fill;max-width:none;max-height:none;pointer-events:none}
.reader-zoom-preview{filter:contrast(1.03)}
.flip-mount{overflow:visible;max-width:100%;max-height:100%}
.reader.is-magnified .reader-size-btn.emphasized{box-shadow:0 0 0 2px #ffffff20 inset}
@media(max-width:1020px){.reader-tools-caption,.reader-speed-label span{display:none}.reader-bottom{gap:6px}.reader-extras{gap:5px}.reader-zoom-percent{min-width:43px}}
@media(max-width:750px){.reader-top{height:49px;flex-basis:49px;padding:0 8px}.reader-identity small,.reader-mode-label{display:none}.reader-identity strong{max-width:52vw;font-size:12px}.reader-top-actions{gap:4px}.reader-icon-btn{width:37px;height:37px}.reader-bottom{height:106px;flex-basis:106px;display:grid;grid-template-columns:1fr;grid-template-rows:45px 45px;justify-items:stretch;padding:5px 8px 6px;gap:5px}.reader-pagination{grid-column:1;grid-row:1;justify-content:space-between}.reader-reading-tools{grid-column:1;grid-row:2;justify-content:space-between;padding:2px 5px}.reader-extras{display:none}.reader-round{height:41px;min-width:92px}.reader-counter{font-size:15px}.reader-size-btn{height:37px;min-width:43px;font-size:16px}.reader-fit-btn{height:37px;padding:0 10px;font-size:12px}.reader-zoom-area{padding:6px 6px 20px}}
@media(max-width:370px){.reader-round{min-width:76px;padding:0 8px}.reader-size-btn{min-width:38px}.reader-reading-tools{gap:2px}.reader-zoom-percent{font-size:12px}.reader-fit-btn{padding:0 8px;font-size:11px}}
@media(max-height:640px) and (min-width:751px){.reader-top{height:45px;flex-basis:45px}.reader-bottom{height:55px;min-height:55px;flex-basis:55px}.reader-round,.reader-size-btn,.reader-fit-btn{height:38px}}