/* ===================== LogisticsBook main.css ===================== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;overflow-x:clip}
body{margin:0;font-family:var(--font-body);font-size:16px;line-height:1.65;color:var(--color-ink);background:var(--color-surface-base);-webkit-font-smoothing:antialiased;overflow-x:clip}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:var(--t-color)}
h1,h2,h3,h4{margin:0;font-family:var(--font-display);font-weight:600;color:var(--color-ink);letter-spacing:-.01em}
p{margin:0 0 1rem}
ul{margin:0}
:focus-visible{outline:2px solid var(--color-action);outline-offset:3px}
.lb-skip{position:absolute;left:-999px}
.lb-skip:focus{left:16px;top:16px;z-index:100;background:var(--color-ink);color:#fff;padding:10px 16px}

.lb-container{max-width:var(--container);margin:0 auto;padding:0 24px}

/* ---- Kicker / labels ---- */
.lb-kicker{display:inline-block;font-family:var(--font-body);font-weight:600;font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--color-action);margin:0 0 14px}
.lb-kicker--line{padding-left:34px;position:relative}
.lb-kicker--line::before{content:"";position:absolute;left:0;top:50%;width:24px;height:2px;background:var(--color-accent)}

.lb-sec-title{font-size:clamp(30px,4vw,46px);line-height:1.04;color:var(--color-ink)}
.lb-sec-title em{font-style:italic;color:var(--color-action)}
.lb-sec-head{margin-bottom:36px;max-width:60ch;text-wrap:balance}
.lb-sec-head--row{display:flex;justify-content:space-between;align-items:flex-end;max-width:none;gap:24px}
.lb-seeall{font-weight:600;font-size:14px;color:var(--color-ink);display:inline-flex;align-items:center;gap:8px;white-space:nowrap;border-bottom:2px solid var(--color-accent);padding-bottom:3px}
.lb-seeall:hover{color:var(--color-action)}
.lb-seeall svg{transition:transform .25s var(--ease)}
.lb-seeall:hover svg{transform:translateX(4px)}

/* ---- Buttons ---- */
.lb-btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;font-family:var(--font-body);font-weight:600;font-size:15px;line-height:1;border-radius:var(--radius-btn);border:2px solid transparent;padding:14px 28px;cursor:pointer;white-space:nowrap;transition:background .2s ease-out,color .2s ease-out,border-color .2s ease-out,transform .15s ease}
.lb-btn svg{flex:0 0 auto}
.lb-btn--solid{background:var(--color-ink);color:#fff;border-color:var(--color-ink)}
.lb-btn--solid:hover{background:#15202c;color:#fff}
.lb-btn--solid:active{transform:translateY(1px)}
.lb-btn--ghost{background:transparent;color:var(--color-ink);border-color:var(--color-line)}
.lb-btn--ghost:hover{border-color:var(--color-ink);color:var(--color-ink)}
.lb-btn--buy{background:var(--color-action);color:#fff;border-color:var(--color-action);width:100%;padding:12px 18px}
.lb-btn--buy:hover{background:var(--color-action-hover);border-color:var(--color-action-hover);color:#fff}
.lb-btn--xl{padding:18px 34px;font-size:17px;width:100%}
.lb-btn--mini{width:auto;padding:9px 14px;font-size:13px;gap:7px}
.lb-btn[disabled],.lb-btn.is-disabled{opacity:.45;cursor:not-allowed}

/* ---- Topbar ---- */
.lb-topbar{background:var(--color-ink);color:#cdd5de;font-size:13px}
.lb-topbar__in{display:flex;justify-content:space-between;gap:16px;padding:9px 24px}
.lb-topbar__note{margin:0}
.lb-topbar__aff{margin:0;color:var(--color-accent)}

/* ---- Header ---- */
.lb-header{position:sticky;top:0;z-index:40;background:rgba(246,241,233,.97);border-bottom:1px solid var(--color-line)}
.lb-brand .custom-logo-link{display:inline-block;line-height:0}
.lb-brand .custom-logo{height:34px;width:auto;display:block}
@media (max-width:600px){.lb-brand .custom-logo{height:28px}}
.lb-header__in{display:flex;align-items:center;gap:28px;min-height:74px}
.lb-wordmark{display:inline-flex;align-items:center;gap:11px;font-family:var(--font-display);font-weight:700;font-size:30px;line-height:1;letter-spacing:-.02em;color:var(--color-ink)}
.lb-mark{height:38px;width:auto;flex:0 0 auto;display:block}
.lb-wordmark__text{display:inline-flex;align-items:baseline}
.lb-wordmark--foot .lb-mark{height:34px}
.lb-wordmark__main em{font-style:italic;color:var(--color-action);font-weight:600}
.lb-wordmark__tld{font-family:var(--font-body);font-weight:600;font-size:14px;color:var(--color-accent);margin-left:2px}
.lb-nav{margin-left:auto}
.lb-nav__head{display:none}
.lb-menu{display:flex;align-items:center;gap:26px;list-style:none;padding:0;flex-wrap:nowrap}
.lb-menu a{font-weight:500;font-size:15px;color:var(--color-ink);white-space:nowrap;padding:6px 0;position:relative}
.lb-menu a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--color-action);transition:width .25s var(--ease)}
.lb-menu a:hover{color:var(--color-action)}
.lb-menu a:hover::after{width:100%}
.lb-header__tools{display:flex;align-items:center;gap:6px}
.lb-tool{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;color:var(--color-ink);border:1px solid transparent;border-radius:var(--radius-card)}
.lb-tool:hover{color:var(--color-action);border-color:var(--color-line)}
.lb-burger{display:none;flex-direction:column;gap:5px;width:44px;height:44px;background:none;border:1px solid var(--color-line);border-radius:var(--radius-card);cursor:pointer;align-items:center;justify-content:center;margin-left:auto}
.lb-burger span{width:22px;height:2px;background:var(--color-ink);transition:transform .25s,opacity .2s}
.lb-burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.lb-burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.lb-burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---- HERO 7/5 ---- */
.lb-hero{padding:72px 0 84px;position:relative;overflow:hidden}
.lb-hero__in{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
.lb-hero__title{font-size:clamp(40px,5.4vw,68px);line-height:1.0;letter-spacing:-.02em;margin:0 0 22px}
.lb-hero__title em{font-style:italic;color:var(--color-action)}
.lb-hero__sub{font-size:19px;color:var(--color-ink-soft);max-width:46ch;margin:0 0 30px;text-wrap:pretty}
.lb-hero__cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:22px}
.lb-hero__trust{font-size:13px;color:var(--color-ink-soft);display:flex;align-items:center;gap:8px;margin:0}
.lb-hero__trust::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--color-success);box-shadow:0 0 0 4px rgba(46,125,50,.15)}
.lb-hero__visual{position:relative;min-height:430px}
.lb-hero__blob{position:absolute;inset:auto -40px -30px auto;width:340px;height:340px;background:radial-gradient(circle at 40% 40%,var(--color-accent),#e0b878);opacity:.28;border-radius:46% 54% 58% 42%/52% 44% 56% 48%;filter:blur(4px);z-index:0}
.lb-hero__stack{position:relative;z-index:2;height:100%}
.lb-hero__book{position:absolute;width:210px;box-shadow:var(--shadow-high);border-radius:var(--radius-card);overflow:hidden;transition:transform .3s var(--ease)}
.lb-hero__book .lb-card__img,.lb-hero__book img{aspect-ratio:1/1.42;object-fit:cover;width:100%}
.lb-hero__book--1{top:0;right:70px;transform:rotate(-4deg);z-index:3}
.lb-hero__book--2{top:48px;right:0;transform:rotate(4deg);z-index:2;width:190px}
.lb-hero__book--3{top:150px;right:130px;transform:rotate(-1deg);z-index:1;width:170px}
.lb-hero__book--4{display:none}
.lb-hero__book:hover{transform:translateY(-6px) rotate(0)}
.lb-hero__stamp{position:absolute;top:8px;left:8px;z-index:5;background:var(--color-action);color:#fff;font-family:var(--font-body);font-weight:700;font-size:12px;line-height:1.15;text-transform:uppercase;letter-spacing:.05em;padding:10px 12px;text-align:center;transform:rotate(-12deg);box-shadow:var(--shadow-mid)}

/* ---- Topics strip ---- */
.lb-topics{padding:14px 0 56px}
.lb-topic-row{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:14px}
.lb-topic{display:flex;flex-direction:column;gap:4px;background:var(--color-surface-elevated);border:1px solid var(--color-line);border-radius:var(--radius-card);padding:18px 20px;transition:var(--t-move),border-color .2s}
.lb-topic:hover{transform:translateY(-3px);box-shadow:var(--shadow-mid);border-color:var(--color-accent)}
.lb-topic__name{font-family:var(--font-display);font-size:21px;font-weight:600;color:var(--color-ink)}
.lb-topic__count{font-size:13px;color:var(--color-ink-soft)}

/* ---- Section paddings ---- */
.lb-featured,.lb-how,.lb-promo{padding:72px 0}
.lb-how{background:var(--color-surface-alt)}

/* ---- Book grid + card ---- */
.lb-grid{display:grid;gap:30px 26px}
.lb-grid--4{grid-template-columns:repeat(4,1fr)}
.lb-grid--3{grid-template-columns:repeat(3,1fr)}
.lb-grid--2{grid-template-columns:repeat(2,1fr)}
.lb-card{display:flex;flex-direction:column;background:transparent}
.lb-card__cover{position:relative;display:block;border-radius:var(--radius-card);overflow:hidden;background:var(--color-surface-elevated);box-shadow:var(--shadow-low);transition:var(--t-move)}
.lb-card__cover .lb-card__img,.lb-card__cover img{aspect-ratio:1/1.42;width:100%;object-fit:cover;transition:transform .4s var(--ease)}
.lb-card:hover .lb-card__cover{box-shadow:var(--shadow-high)}
.lb-card:hover .lb-card__cover img{transform:scale(1.04)}
.lb-noimg{display:flex;align-items:center;justify-content:center;background:var(--color-surface-alt);color:var(--color-ink-soft);font-size:13px;text-align:center;padding:16px;aspect-ratio:1/1.42}
.lb-noimg--tall{aspect-ratio:auto;height:100%}
.lb-tag{position:absolute;top:12px;left:0;background:var(--color-ink);color:#fff;font-size:11px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;padding:6px 12px}
.lb-tag--sale{background:var(--color-action)}
.lb-tag--rot{transform:rotate(-3deg);left:12px;top:14px}
.lb-card__body{padding:16px 2px 0;display:flex;flex-direction:column;gap:7px;flex:1}
.lb-card__author{font-size:12px;letter-spacing:.04em;text-transform:uppercase;color:var(--color-ink-soft);margin:0}
.lb-card__title{font-size:21px;line-height:1.15;font-weight:600}
.lb-card__title a:hover{color:var(--color-action)}
.lb-card__meta{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto;padding-top:6px}
.lb-card__price{font-family:var(--font-body);font-weight:700;font-size:17px;color:var(--color-ink)}
.lb-card__price del{color:var(--color-ink-soft);font-weight:400;font-size:14px;margin-right:6px}
.lb-card__price ins{text-decoration:none;color:var(--color-action)}
.lb-card__body .lb-btn--buy{margin-top:10px}

/* Stock badge */
.lb-stock{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600}
.lb-stock__dot{width:8px;height:8px;border-radius:50%}
.lb-stock.is-in{color:var(--color-success)}
.lb-stock.is-in .lb-stock__dot{background:var(--color-success)}
.lb-stock.is-out{color:var(--color-error)}
.lb-stock.is-out .lb-stock__dot{background:var(--color-error)}

/* ---- How split ---- */
.lb-how__in{display:grid;grid-template-columns:6fr 5fr;gap:48px;align-items:center}
.lb-how__card{background:var(--color-surface-elevated);border:1px solid var(--color-line);border-radius:var(--radius-card);padding:40px;box-shadow:var(--shadow-low)}
.lb-how__list{list-style:none;padding:0;margin:22px 0 28px;display:flex;flex-direction:column;gap:16px}
.lb-how__list li{position:relative;padding-left:28px;color:var(--color-ink-soft);line-height:1.55}
.lb-how__list li::before{content:"";position:absolute;left:0;top:9px;width:12px;height:12px;background:var(--color-accent);border-radius:50%}
.lb-how__list strong{color:var(--color-ink)}
.lb-how__people{position:relative}
.lb-how__photo{border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-mid);background:var(--color-surface-elevated)}
.lb-how__photo img{display:block;width:100%;height:auto;border-radius:var(--radius-card)}
.lb-how__quote{margin:0;background:var(--color-ink);color:#fff;padding:24px 26px;border-radius:var(--radius-card);position:relative;margin-top:-40px;margin-left:36px;box-shadow:var(--shadow-high);transform:rotate(-1.5deg)}
.lb-how__quote blockquote{margin:0 0 10px;font-family:var(--font-display);font-size:22px;font-style:italic;line-height:1.3}
.lb-how__quote figcaption{font-size:13px;color:var(--color-accent);font-weight:600}
.lb-how__quote figcaption span{color:#9aa6b2;font-weight:400}

/* ---- Promo list ---- */
.lb-promo__list{display:flex;flex-direction:column;border-top:1px solid var(--color-line)}
.lb-promo__row{display:grid;grid-template-columns:64px 1fr auto auto;align-items:center;gap:22px;padding:16px 8px;border-bottom:1px solid var(--color-line);transition:background .2s}
.lb-promo__row:hover{background:var(--color-surface-elevated)}
.lb-promo__cover{width:64px}
.lb-promo__cover .lb-card__img,.lb-promo__cover img{aspect-ratio:1/1.42;object-fit:cover;border-radius:2px;width:100%}
.lb-promo__cover .lb-noimg{font-size:9px;padding:4px}
.lb-promo__info{display:flex;flex-direction:column;gap:3px;min-width:0}
.lb-promo__title{font-family:var(--font-display);font-size:21px;font-weight:600;line-height:1.15}
.lb-promo__author{font-size:12px;text-transform:uppercase;letter-spacing:.04em;color:var(--color-ink-soft)}
.lb-promo__price{font-weight:700;font-size:17px;white-space:nowrap}
.lb-promo__price ins{text-decoration:none;color:var(--color-action)}
.lb-promo__price del{color:var(--color-ink-soft);font-weight:400;font-size:13px;margin-right:5px}

/* ---- Footer ---- */
.lb-footer{background:var(--color-ink);color:#c2cbd4;padding:64px 0 0;margin-top:40px}
.lb-footer__grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:40px;padding-bottom:48px}
.lb-footer .lb-wordmark__main{color:#fff}
.lb-footer .lb-wordmark__main em{color:var(--color-accent)}
.lb-footer__desc{margin-top:16px;font-size:14px;line-height:1.6;color:#9aa6b2;max-width:42ch}
.lb-footer__col ul{list-style:none;padding:0;display:flex;flex-direction:column;gap:10px}
.lb-footer__col a{font-size:14px;color:#c2cbd4}
.lb-footer__col a:hover{color:var(--color-accent)}
.lb-footer .lb-kicker{color:var(--color-accent);margin-bottom:18px}
.lb-footer__note p{font-size:13px;line-height:1.6;color:#9aa6b2}
.lb-footer__note strong{color:#fff}
.lb-footer__bar{border-top:1px solid rgba(255,255,255,.1)}
.lb-footer__bar-in{display:flex;justify-content:space-between;gap:16px;padding:18px 24px;font-size:12px;color:#7e8a96}
.lb-footer__bar-in p{margin:0}

/* ---- Shop ---- */
.lb-shop{padding:48px 0 72px}
.lb-shop__head{max-width:none}
.lb-shop__desc{color:var(--color-ink-soft);max-width:60ch}
.lb-shop__toolbar{display:flex;justify-content:space-between;align-items:center;gap:16px;margin:8px 0 30px;padding-bottom:18px;border-bottom:1px solid var(--color-line);flex-wrap:wrap}
.lb-shop__toolbar .woocommerce-result-count{margin:0;color:var(--color-ink-soft);font-size:14px}
.lb-shop__toolbar select,.lb-shop__toolbar .orderby{font-family:var(--font-body);padding:9px 12px;border:1px solid var(--color-line);border-radius:var(--radius-card);background:var(--color-surface-elevated);color:var(--color-ink)}
.woocommerce-breadcrumb{font-size:13px;color:var(--color-ink-soft);margin:10px 0 0}
.lb-bc-sep{color:var(--color-line)}
.woocommerce-pagination ul{display:flex;gap:8px;list-style:none;padding:0;margin:44px 0 0;justify-content:center}
.woocommerce-pagination a,.woocommerce-pagination span{display:inline-flex;min-width:42px;height:42px;align-items:center;justify-content:center;border:1px solid var(--color-line);border-radius:var(--radius-card);font-weight:600}
.woocommerce-pagination .current{background:var(--color-ink);color:#fff;border-color:var(--color-ink)}

/* ---- Single book ---- */
.lb-book{padding:32px 0 72px}
.lb-book__grid{display:grid;grid-template-columns:5fr 7fr;gap:56px;margin-top:18px;align-items:start}
.lb-book__cover{position:relative;border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-high);max-width:420px}
.lb-book__cover img,.lb-book__cover .lb-card__img{aspect-ratio:1/1.42;object-fit:cover;width:100%}
.lb-book__media{position:sticky;top:96px}
.lb-book__title{font-size:clamp(34px,4vw,52px);line-height:1.05;margin:8px 0 14px}
.lb-book__author{color:var(--color-ink-soft);margin:0 0 22px}
.lb-author-link{color:var(--color-action);text-decoration:none;border-bottom:1px solid var(--color-line);transition:color .2s ease-out,border-color .2s ease-out}
.lb-author-link:hover{color:var(--color-action-hover);border-bottom-color:var(--color-accent)}
.lb-book__pricerow{display:flex;align-items:center;gap:20px;flex-wrap:wrap;margin-bottom:6px}
.lb-book__price{font-family:var(--font-body);font-weight:700;font-size:30px;color:var(--color-ink)}
.lb-book__price ins{text-decoration:none;color:var(--color-action)}
.lb-book__price del{color:var(--color-ink-soft);font-weight:400;font-size:20px;margin-right:8px}
.lb-book__updated{font-size:12px;color:var(--color-ink-soft);margin:0 0 22px}
.lb-book__aff-note{font-size:13px;color:var(--color-ink-soft);margin:14px 0 0;padding-left:14px;border-left:3px solid var(--color-accent)}
.lb-book__short{margin-top:24px;color:var(--color-ink-soft)}
.lb-book__cats{font-size:14px;color:var(--color-ink-soft);margin-top:20px}
.lb-book__desc,.lb-book__related{margin-top:64px}

/* ---- Prose ---- */
.lb-prose{font-size:17px;line-height:1.75;color:#3b3a36;max-width:68ch}
.lb-prose h2{font-size:30px;margin:32px 0 14px}
.lb-prose h3{font-size:23px;margin:26px 0 10px}
.lb-prose a{color:var(--color-action);text-decoration:underline;text-underline-offset:3px}
.lb-prose ul,.lb-prose ol{padding-left:22px;margin:0 0 18px}

/* ---- Generic page / blog ---- */
.lb-page{padding:48px 0 72px}
.lb-empty{color:var(--color-ink-soft);font-style:italic;padding:30px 0}
.lb-postlist{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}
.lb-postcard__img img{aspect-ratio:3/2;object-fit:cover;border-radius:var(--radius-card)}
.lb-postcard__title{font-size:24px;margin:12px 0 8px}
.lb-readmore{font-weight:600;color:var(--color-action);display:inline-flex;gap:7px;align-items:center}

/* ===================== RESPONSIVE ===================== */
@media (max-width:1024px){
  .lb-burger{display:flex}
  .lb-nav{position:fixed;inset:0 0 0 auto;width:min(84vw,340px);background:var(--color-surface-elevated);box-shadow:var(--shadow-high);transform:translateX(100%);transition:transform .3s var(--ease);z-index:60;padding:16px 26px 32px;margin:0;overflow-y:auto}
  .lb-nav.is-open{transform:translateX(0)}
  .lb-nav__head{display:flex;align-items:center;justify-content:space-between;padding:4px 0 12px;margin-bottom:8px;border-bottom:1px solid var(--color-line)}
  .lb-nav__brand{font-family:var(--font-display);font-size:23px;font-weight:600;color:var(--color-ink);line-height:1}
  .lb-nav__brand em{font-style:italic;color:var(--color-action)}
  .lb-nav__tld{font-family:var(--font-body);font-size:13px;color:var(--color-action);vertical-align:super}
  .lb-nav__close{width:42px;height:42px;display:flex;align-items:center;justify-content:center;font-size:30px;line-height:1;background:none;border:1px solid var(--color-line);border-radius:var(--radius-card);color:var(--color-ink);cursor:pointer;transition:var(--t-color),border-color .2s}
  .lb-nav__close:hover{color:var(--color-action);border-color:var(--color-action)}
  .lb-menu{flex-direction:column;align-items:stretch;width:100%;gap:0}
  .lb-menu li{width:100%}
  .lb-menu a{display:block;font-size:17px;padding:14px 2px;width:100%;border-bottom:1px solid var(--color-line)}
  .lb-menu a::after{display:none}
  .lb-header__tools{margin-left:0}
  body.lb-nav-open{overflow:hidden}
  .lb-nav-scrim{position:fixed;inset:0;background:rgba(30,42,56,.4);z-index:55;opacity:0;visibility:hidden;transition:opacity .3s}
  .lb-nav-scrim.is-open{opacity:1;visibility:visible}
  /* Header sticky (z-40) tạo stacking context nhốt menu dưới scrim (z-55) -> nâng header lên trên scrim khi mở menu, để bấm được link */
  body.lb-nav-open .lb-header{z-index:70}
  .lb-hero__in{grid-template-columns:6fr 5fr;gap:36px}
  .lb-grid--4{grid-template-columns:repeat(3,1fr)}
  .lb-footer__grid{grid-template-columns:1fr 1fr}
}
@media (max-width:860px){
  .lb-hero__in{grid-template-columns:1fr;gap:30px}
  .lb-hero__visual{min-height:360px;max-width:420px}
  .lb-how__in,.lb-book__grid{grid-template-columns:1fr;gap:32px}
  .lb-book__media{position:static}
  .lb-book__cover{max-width:300px}
  .lb-postlist{grid-template-columns:repeat(2,1fr)}
  .lb-topbar__aff{display:none}
}
@media (max-width:680px){
  .lb-grid--4,.lb-grid--3{grid-template-columns:repeat(2,1fr)}
  .lb-grid{gap:26px 18px}
  .lb-sec-head--row{flex-direction:column;align-items:flex-start;gap:12px}
  .lb-promo__row{grid-template-columns:52px 1fr;grid-template-areas:"cover info" "price price";row-gap:10px}
  .lb-promo__cover{grid-area:cover}.lb-promo__info{grid-area:info}.lb-promo__price{grid-area:price}
  .lb-promo__row .lb-btn--mini{display:none}
  .lb-footer__grid{grid-template-columns:1fr;gap:30px}
  .lb-footer__bar-in{flex-direction:column;gap:6px}
  .lb-how__card{padding:28px 22px}
}
@media (max-width:460px){
  .lb-container{padding:0 18px}
  .lb-card__title{font-size:19px}
  .lb-postlist{grid-template-columns:1fr}
  .lb-hero__book--1{right:30px}
}

/* ===================== Tra cứu sách ===================== */
.lb-search{padding:8px 0 60px}
.lb-search__in{background:var(--color-ink);color:#fff;border-radius:var(--radius-card);padding:46px 52px;box-shadow:var(--shadow-mid)}
.lb-search__head{max-width:none;margin-bottom:24px}
.lb-search .lb-kicker{color:var(--color-accent)}
.lb-search .lb-sec-title{color:#fff}
.lb-search__desc{color:#aeb8c2;margin:10px 0 0;max-width:62ch}
.lb-search__form{display:flex;gap:10px;background:#fff;border-radius:var(--radius-card);padding:8px 8px 8px 16px;align-items:center;max-width:780px}
.lb-search__icon{display:flex;color:var(--color-ink-soft);flex:0 0 auto}
.lb-search__input{flex:1;border:0;outline:0;font-family:var(--font-body);font-size:16px;color:var(--color-ink);background:transparent;padding:13px 4px;min-width:0}
.lb-search__btn{flex:0 0 auto}
.lb-search__chips{display:flex;flex-wrap:wrap;align-items:center;gap:9px;margin-top:18px}
.lb-search__chip-label{font-size:13px;color:#8e99a4}
.lb-chip{display:inline-block;font-size:13px;font-weight:500;color:#dfe5ea;border:1px solid rgba(255,255,255,.22);border-radius:var(--radius-card);padding:6px 13px;transition:var(--t-color),border-color .2s,background .2s}
.lb-chip:hover{color:#fff;border-color:var(--color-accent);background:rgba(201,138,60,.16)}

/* ===================== Review mới nhất ===================== */
.lb-reviews{padding:8px 0 72px}
.lb-review{display:flex;flex-direction:column;background:var(--color-surface-elevated);border:1px solid var(--color-line);border-radius:var(--radius-card);overflow:hidden;transition:var(--t-move)}
.lb-review:hover{transform:translateY(-3px);box-shadow:var(--shadow-mid)}
.lb-review__img{display:block;aspect-ratio:3/2;overflow:hidden;background:var(--color-surface-alt)}
.lb-review__img img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.lb-review:hover .lb-review__img img{transform:scale(1.04)}
.lb-review__img .lb-noimg{aspect-ratio:3/2;height:100%;width:100%}
.lb-review__body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:9px}
.lb-review__meta{font-size:12px;text-transform:uppercase;letter-spacing:.04em;color:var(--color-ink-soft)}
.lb-review__title{font-size:23px;line-height:1.2}
.lb-review__title a:hover{color:var(--color-action)}
.lb-review__excerpt{color:var(--color-ink-soft);font-size:15px;margin:0}

@media (max-width:680px){
  .lb-search__in{padding:32px 24px}
  .lb-search__form{flex-wrap:wrap;padding:12px}
  .lb-search__input{width:100%;flex:1 1 100%;order:2}
  .lb-search__icon{order:1}
  .lb-search__btn{order:3;width:100%}
}

/* ===================== Bảng xếp hạng (gộp tra cứu) ===================== */
.lb-rank{padding:8px 0 60px}
.lb-rank__desc{color:var(--color-ink-soft);max-width:64ch;margin:10px 0 0}
.lb-rank .lb-search__form{background:#fff;border:1px solid var(--color-line);box-shadow:var(--shadow-low);max-width:none;margin:26px 0 6px}
.lb-rank__list{list-style:none;padding:0;margin:22px 0 0;border-top:1px solid var(--color-line)}
.lb-rank__row{display:grid;grid-template-columns:46px 52px 1fr auto auto auto;align-items:center;gap:20px;padding:15px 6px;border-bottom:1px solid var(--color-line);transition:background .2s}
.lb-rank__row:hover{background:var(--color-surface-elevated)}
.lb-rank__row[hidden]{display:none}
.lb-rank__num{font-family:var(--font-display);font-size:27px;font-weight:700;color:var(--color-line);text-align:center;font-variant-numeric:tabular-nums}
.lb-rank__row:nth-child(-n+3) .lb-rank__num{color:var(--color-action)}
.lb-rank__cover{width:52px;display:block}
.lb-rank__cover .lb-card__img,.lb-rank__cover img{aspect-ratio:1/1.42;width:100%;object-fit:cover;border-radius:2px}
.lb-rank__cover .lb-noimg{aspect-ratio:1/1.42;font-size:0;padding:0}
.lb-rank__info{display:flex;flex-direction:column;gap:4px;min-width:0}
.lb-rank__author{font-size:11px;text-transform:uppercase;letter-spacing:.05em;color:var(--color-ink-soft)}
.lb-rank__title{font-size:19px;line-height:1.2;font-weight:600}
.lb-rank__title a:hover{color:var(--color-action)}
.lb-rank__score{font-family:var(--font-display);font-weight:700;font-size:24px;color:var(--color-ink);white-space:nowrap}
.lb-rank__score span{font-family:var(--font-body);font-size:12px;font-weight:500;color:var(--color-ink-soft);margin-left:1px}
.lb-rank__price{font-weight:700;font-size:16px;white-space:nowrap;text-align:right;min-width:96px}
.lb-rank__price ins{text-decoration:none;color:var(--color-action)}
.lb-rank__price del{display:block;font-weight:400;font-size:12px;color:var(--color-ink-soft)}
.lb-rank__buy{flex:0 0 auto;padding:9px 16px}
.lb-rank__pager{display:flex;justify-content:center;flex-wrap:wrap;gap:8px;margin-top:30px}
.lb-rank__pager button{min-width:42px;height:42px;padding:0 12px;border:1px solid var(--color-line);background:var(--color-surface-elevated);border-radius:var(--radius-card);font-family:var(--font-body);font-weight:600;font-size:15px;color:var(--color-ink);cursor:pointer;transition:background .2s,color .2s,border-color .2s}
.lb-rank__pager button:hover{border-color:var(--color-ink)}
.lb-rank__pager button.is-active{background:var(--color-ink);color:#fff;border-color:var(--color-ink)}
.lb-rank__pager button[disabled]{opacity:.4;cursor:not-allowed}
@media (max-width:760px){
  .lb-rank__row{grid-template-columns:28px 44px 1fr auto;gap:6px 14px}
  .lb-rank__buy{display:none}
  .lb-rank__num{font-size:20px}
  .lb-rank__score{font-size:20px;grid-column:4;grid-row:1}
  .lb-rank__price{grid-column:3 / 5;text-align:left;min-width:0;font-size:14px;margin-top:-2px}
}

.lb-how__lead{font-size:18px;color:var(--color-ink);margin:0 0 18px;line-height:1.6}

/* Đọc thử Google Books */
.lb-gbooks{margin:48px 0 8px;border-top:1px solid var(--color-line);padding-top:32px}
.lb-gbooks__note{color:var(--color-ink-soft);font-size:14px;margin:0 0 16px;max-width:62ch}
.lb-gbooks__frame{width:100%;height:560px;background:var(--color-surface-alt);border:1px solid var(--color-line);border-radius:4px}
.lb-gbooks__fallback{display:none;color:var(--color-ink-soft);font-size:15px;background:var(--color-surface-alt);border:1px solid var(--color-line);border-radius:4px;padding:22px 24px;margin:0}
.lb-gbooks--none .lb-gbooks__frame{display:none}
.lb-gbooks--none .lb-gbooks__note{display:none}
.lb-gbooks--none .lb-gbooks__fallback{display:block}
@media (max-width:600px){.lb-gbooks__frame{height:460px}}

/* Tài liệu mở (OER) */
.lb-oer-intro{max-width:70ch;margin:0 0 32px}
.lb-oer__grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;margin:0 0 32px}
.lb-oer__card{background:var(--color-surface-elevated);border:1px solid var(--color-line);border-radius:4px;padding:24px 24px 26px;display:flex;flex-direction:column}
.lb-oer__top{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;margin-bottom:8px}
.lb-oer__title{font-family:var(--font-display);font-weight:700;font-size:22px;line-height:1.15;margin:0;color:var(--color-ink)}
.lb-oer__lic{flex:none;font-size:11px;font-weight:600;letter-spacing:.04em;padding:4px 9px;border-radius:3px;white-space:nowrap}
.lb-oer__lic--by{background:rgba(46,125,50,.12);color:var(--color-success)}
.lb-oer__lic--nc{background:rgba(201,138,60,.16);color:#8a5a1e}
.lb-oer__meta{font-size:13px;color:var(--color-ink-soft);margin:0 0 12px}
.lb-oer__desc{font-size:15px;line-height:1.6;color:var(--color-ink);margin:0 0 20px;flex:1}
.lb-oer-note{max-width:70ch;font-size:14px;color:var(--color-ink-soft);border-top:1px solid var(--color-line);padding-top:20px}
@media (max-width:760px){.lb-oer__grid{grid-template-columns:1fr}}
/* Kho tài liệu - phân nhóm */
.lb-oer__cat{margin:0 0 16px}
.lb-oer__cat-head{display:flex;align-items:baseline;gap:14px;margin:44px 0 6px;padding-bottom:10px;border-bottom:2px solid var(--color-ink)}
.lb-oer__cat-head:first-of-type{margin-top:8px}
.lb-oer__cat-title{font-family:var(--font-display);font-weight:700;font-size:27px;color:var(--color-ink);margin:0}
.lb-oer__cat-count{font-size:13px;color:var(--color-ink-soft);font-weight:600;letter-spacing:.02em}
.lb-oer__cat-desc{font-size:14.5px;color:var(--color-ink-soft);margin:12px 0 22px;max-width:74ch;line-height:1.6}
/* badge loại tài liệu */
.lb-oer__lic--gov{background:rgba(30,42,56,.10);color:var(--color-ink)}
.lb-oer__lic--law{background:rgba(184,71,46,.12);color:var(--color-action)}
.lb-oer__lic--report{background:rgba(89,84,76,.14);color:var(--color-ink-soft)}
.lb-oer__src{font-size:12px;color:var(--color-ink-soft);margin-top:14px;word-break:break-word}
/* Khối liên quan / đọc thêm cuối bài */
.lb-related,.lb-oer-more{margin-top:44px;padding-top:24px;border-top:2px solid var(--color-ink)}
.lb-related h2,.lb-oer-more h2{font-size:24px;margin:0 0 14px}
.lb-related ul,.lb-oer-more ul{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.lb-related li,.lb-oer-more li{padding-left:18px;position:relative}
.lb-related li::before,.lb-oer-more li::before{content:"›";position:absolute;left:0;color:var(--color-accent);font-weight:700}
.lb-related a,.lb-oer-more a{color:var(--color-ink);text-decoration:none;border-bottom:1px solid var(--color-line);transition:color .2s ease-out}
.lb-related a:hover,.lb-oer-more a:hover{color:var(--color-action)}

/* ====== Tác giả: byline + author box + profile ====== */
.lb-byline{margin:.6rem 0 0;font-family:var(--font-body);font-size:.95rem;color:var(--color-ink-soft);letter-spacing:.01em}
.lb-byline a.lb-byline__name{color:var(--color-ink);font-weight:600;text-decoration:none;border-bottom:1px solid var(--color-line)}
.lb-byline a.lb-byline__name:hover{color:var(--color-action);border-color:var(--color-action)}
.lb-byline__sep{color:var(--color-accent);margin:0 .15rem}

.lb-author-box{display:flex;gap:1.4rem;align-items:flex-start;margin:3rem 0 0;padding:1.6rem 1.8rem;
  background:var(--color-surface-alt);border:1px solid var(--color-line);border-radius:4px}
.lb-author-box__media{flex:0 0 96px}
.lb-author-box__media .lb-author__photo{width:96px;height:96px;object-fit:cover;border-radius:4px;display:block}
.lb-author-box__body{flex:1 1 auto;min-width:0}
.lb-author-box__name{font-family:var(--font-display);font-size:1.5rem;line-height:1.1;margin:.3rem 0 .15rem}
.lb-author-box__name a{color:var(--color-ink);text-decoration:none}
.lb-author-box__name a:hover{color:var(--color-action)}
.lb-author-box__role{font-size:.92rem;color:var(--color-action);font-weight:600;margin:0 0 .5rem}
.lb-author-box__bio{font-size:.97rem;color:var(--color-ink-soft);line-height:1.65}
.lb-author-box__bio a{color:var(--color-ink);border-bottom:1px solid var(--color-accent)}
.lb-author-box__bio p:last-child{margin-bottom:0}

.lb-author-hero{display:flex;gap:2rem;align-items:flex-start;margin:0 0 2.6rem;padding-bottom:2rem;border-bottom:1px solid var(--color-line)}
.lb-author-hero__media{flex:0 0 160px}
.lb-author-hero__media .lb-author__photo{width:160px;height:160px;object-fit:cover;border-radius:4px;display:block}
.lb-author-hero__role{font-size:1.02rem;color:var(--color-action);font-weight:600;margin:.2rem 0 1rem}
.lb-author-hero__bio{max-width:62ch}
.lb-author-posts > .lb-kicker{display:block;margin:0 0 1.4rem}
@media(max-width:680px){
  .lb-author-box{flex-direction:column;gap:1rem}
  .lb-author-hero{flex-direction:column;gap:1.2rem}
  .lb-author-hero__media{flex-basis:auto}
  .lb-author-hero__media .lb-author__photo{width:120px;height:120px}
}

/* Social/liên hệ tác giả */
.lb-author-social{display:flex;flex-wrap:wrap;gap:.6rem 1.2rem;margin-top:1rem}
.lb-author-social__link{display:inline-flex;align-items:center;gap:.4rem;font-size:.9rem;font-weight:600;
  color:var(--color-ink);text-decoration:none;padding:.35rem .7rem;border:1px solid var(--color-line);border-radius:4px;
  transition:color .2s ease-out,border-color .2s ease-out,background .2s ease-out}
.lb-author-social__link:hover{color:#fff;background:var(--color-ink);border-color:var(--color-ink)}
.lb-author-social__icon{flex:0 0 auto}