/* ==========================================================================
   VNPAY AI Hub — Ghost theme v3
   Bám sát bản thiết kế Claude Design (4 trang: Home / Tin tức / Kiến thức / Tài nguyên)
   ========================================================================== */

:root {
  --bg:        #F6F4EF;
  --sand:      #ECE7DE;
  --ink:       #16130F;
  --ink-2:     #2C271F;
  --ink-3:     #3A342B;
  --body:      #4A463E;
  --muted:     #6E6A61;
  --dim:       #9A958B;
  --dim-2:     #8a857b;
  --line:      rgba(20,19,15,.10);
  --line-2:    rgba(20,19,15,.16);
  --line-3:    rgba(20,19,15,.28);
  --hair:      #E7E2D8;
  --hair-2:    #E1DBD0;
  --hair-3:    #EDE7DC;
  --ph:        #e7e3db;

  --accent:      #0B4FA0;
  --accent-dk:   #083A78;
  --accent-glow: rgba(11,79,160,.30);
  --accent-lite: rgb(133,167,208);

  --maxw:   1320px;
  --gutter: clamp(20px, 4.5vw, 56px);

  --gh-font-heading: 'Montserrat';
  --gh-font-body:    'Montserrat';
  --font-heading: var(--gh-font-heading, 'Montserrat'), 'Be Vietnam Pro', system-ui, -apple-system, sans-serif;
  --font-body:    var(--gh-font-body, 'Montserrat'), 'Be Vietnam Pro', system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
}
img { display: block; max-width: 100%; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-dk); }
::selection { background: var(--ink); color: var(--bg); }
button, select, input { font-family: inherit; }
h1,h2,h3,h4,h5,h6 { font-family: var(--font-heading); }

.site { min-height: 100vh; display: flex; flex-direction: column; overflow-x: clip; }
.site-main { flex: 1; }
.sr-only { position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; border:0; }

/* ---------- Animations ---------- */
@keyframes fadeUp { from{opacity:0;transform:translateY(22px)} to{opacity:1;transform:none} }
@keyframes fadeIn { from{opacity:0} to{opacity:1} }
@keyframes p2pdot { 0%,80%,100%{transform:translateY(0);opacity:.35} 40%{transform:translateY(-5px);opacity:1} }
@keyframes splashFade { 0%,48%{opacity:1} 100%{opacity:0;visibility:hidden} }
@keyframes splashRise { 0%{opacity:0;transform:translateY(10px)} 100%{opacity:1;transform:none} }
@keyframes splashBar  { 0%{transform:scaleX(0)} 100%{transform:scaleX(1)} }
@keyframes cardRise   { from{opacity:0;transform:translateY(14px)} to{opacity:1;transform:none} }

[data-reveal] {
  opacity: 0; transform: translateY(56px);
  transition: opacity 1.1s cubic-bezier(.19,1,.22,1), transform 1.1s cubic-bezier(.19,1,.22,1);
}
[data-reveal].in { opacity: 1; transform: none; }
[data-reveal="fade"] { transform: none; }
@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity:1; transform:none; transition:none; }
  html { scroll-behavior: auto; }
}

/* ---------- Splash + scroll progress ---------- */
.splash {
  position: fixed; inset: 0; z-index: 200;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 26px;
  background: var(--bg); animation: splashFade 1.15s ease .05s forwards; pointer-events: none;
}
.splash__word {
  display: flex; align-items: center; font-family: var(--font-heading);
  font-weight: 700; font-size: clamp(30px,5vw,54px); letter-spacing: -.02em; color: var(--ink);
  animation: splashRise .55s ease both;
}
.splash__dot { width:12px; height:12px; border-radius:3px; background:var(--accent); display:inline-block; margin:0 5px; }
.splash__sub { font-weight:400; color:var(--muted); }
.splash__bar { width:120px; height:3px; border-radius:2px; background:rgba(20,19,15,.1); overflow:hidden; }
.splash__bar > i { display:block; height:100%; width:100%; background:var(--accent); transform-origin:left; animation:splashBar .9s cubic-bezier(.4,0,.2,1) both; }

#scroll-progress {
  position: fixed; top:0; left:0; height:3px; width:100%;
  background: var(--ink); transform: scaleX(0); transform-origin: left;
  z-index: 100; pointer-events: none;
}

/* ---------- Header ---------- */
.hdr {
  position: sticky; top: 0; z-index: 60;
  background: rgba(246,244,239,.82);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(20,19,15,.08);
}
.hdr__in {
  max-width: var(--maxw); margin: 0 auto; padding: 0 var(--gutter);
  height: 74px; display: flex; align-items: center; gap: clamp(16px,4vw,52px);
}
.logo {
  display: flex; align-items: center; gap: 2px; font-family: var(--font-heading);
  color: var(--ink); font-weight: 700; font-size: 19px; letter-spacing: -.01em; white-space: nowrap;
}
.logo:hover { color: var(--ink); }
.logo__mark { display:inline-block; width:9px; height:9px; border-radius:2px; background:var(--accent); margin:0 3px; transform:translateY(-1px); }
.logo__sub { font-weight:400; color:var(--muted); }
.logo img { max-height: 32px; width: auto; }
.logo__brand { height: 30px; width: auto; display: block; margin-right: 9px; }
@media (max-width: 560px){ .logo__brand { height: 26px; margin-right: 7px; } .logo { font-size: 17px; } }

.nav { display: flex; align-items: center; gap: 6px; margin-left: 6px; }
.nav a {
  color: var(--ink); font-size: 15px; font-weight: 500;
  padding: 9px 14px; border-radius: 9px; white-space: nowrap; transition: background .2s;
}
.nav a:hover { background: rgba(20,19,15,.05); color: var(--ink); }
.nav a.is-active { background: rgba(20,19,15,.07); }

.search-btn {
  margin-left: auto; display: flex; align-items: center; gap: 10px; cursor: pointer;
  border: 1.5px solid var(--line-3); background: #fff; border-radius: 999px;
  padding: 10px 14px 10px 15px; color: var(--muted); font-size: 14px;
  width: clamp(160px, 22vw, 270px);
  box-shadow: 0 2px 10px -4px rgba(20,19,15,.25);
  transition: border-color .2s, box-shadow .2s;
}
.search-btn:hover { border-color: var(--ink); box-shadow: 0 6px 18px -8px rgba(20,19,15,.4); }
.search-btn__icon { color: var(--accent); font-size: 16px; }
.search-btn__label { flex:1; text-align:left; color: var(--dim-2); }
.search-btn__kbd { font-size:11px; color:var(--dim); border:1px solid var(--line-2); border-radius:6px; padding:2px 6px; font-weight:600; }

.burger { display:none; margin-left:8px; width:42px; height:42px; border-radius:10px; border:1px solid var(--line-2); background:none; cursor:pointer; color:var(--ink); font-size:17px; align-items:center; justify-content:center; }

@media (max-width: 900px) {
  .nav { display: none; }
  .nav.is-open {
    display: flex; flex-direction: column; align-items: stretch; gap: 2px;
    position: absolute; top: 74px; left: 0; right: 0;
    background: var(--bg); border-bottom: 1px solid var(--line);
    padding: 12px var(--gutter) 18px; margin: 0;
  }
  .burger { display: flex; }
  .search-btn { width: auto; }
  .search-btn__label, .search-btn__kbd { display: none; }
}

/* ==========================================================================
   HOME
   ========================================================================== */

/* ---------- Hero ---------- */
.hero { position: relative; width: 100%; height: clamp(480px,74vh,780px); overflow: hidden; background: var(--ink); }
.hero__track { display: flex; height: 100%; will-change: transform; }
.hero__slide { position: relative; flex: 0 0 100%; width: 100%; height: 100%; overflow: hidden; }
.hero__img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.hero__scrim { position: absolute; inset: 0; background: linear-gradient(180deg,rgba(20,19,15,.15) 0%,rgba(20,19,15,.05) 38%,rgba(20,19,15,.78) 100%); }
.hero__body { position: absolute; inset: 0; display: flex; align-items: flex-end; }
.hero__inner { max-width: var(--maxw); width: 100%; margin: 0 auto; padding: 0 clamp(56px,7vw,104px) clamp(56px,9vh,104px); }
.hero__kicker { display:inline-flex; align-items:center; gap:9px; color:var(--bg); font-size:12.5px; letter-spacing:.2em; text-transform:uppercase; margin-bottom:26px; opacity:.92; }
.dot-accent { display:inline-block; width:7px; height:7px; border-radius:50%; background:var(--accent); }
.hero__title { font-weight:700; color:#fff; font-size:clamp(34px,5.4vw,74px); line-height:1.08; letter-spacing:-.02em; margin:0; max-width:20ch; text-wrap:balance; }
.hero__title a { color:#fff; }
.hero__title a:hover { color:#fff; opacity:.9; }
.hero__desc { color:rgba(246,244,239,.86); font-size:clamp(15px,1.4vw,18px); line-height:1.6; margin:26px 0 0; max-width:52ch; font-weight:300; }
.hero__cta { display:inline-flex; align-items:center; gap:8px; margin-top:30px; color:#fff; font-size:15px; font-weight:500; border-bottom:1px solid rgba(246,244,239,.4); padding-bottom:3px; }
.hero__cta:hover { color:#fff; border-color:#fff; }
.hero__arrow {
  position:absolute; top:50%; margin-top:-21px; z-index:3;
  width:42px; height:42px; border-radius:50%;
  border:1px solid rgba(246,244,239,.55); background:none; cursor:pointer;
  font-size:15px; color:var(--bg); display:flex; align-items:center; justify-content:center;
  transition: background .25s, color .25s, border-color .25s;
}
.hero__arrow:hover { background:var(--bg); color:var(--ink); border-color:var(--bg); }
.hero__arrow--prev { left: clamp(14px,3vw,40px); }
.hero__arrow--next { right: clamp(14px,3vw,40px); }
.hero__dots { position:absolute; left:0; right:0; bottom:clamp(22px,3.2vh,34px); display:flex; justify-content:center; gap:7px; z-index:3; }
.hero__dots button { width:7px; height:7px; border-radius:50%; cursor:pointer; border:none; padding:0; background:rgba(246,244,239,.4); transition:background .3s, transform .3s; }
.hero__dots button.is-active { background: var(--bg); }

/* ---------- Intro ---------- */
.intro { max-width: var(--maxw); margin: 0 auto; padding: clamp(110px,17vh,210px) var(--gutter); scroll-margin-top: 90px; }
.intro__grid { display:grid; grid-template-columns:1.35fr 1fr; gap:clamp(36px,5vw,80px); align-items:center; }
@media (max-width:760px){ .intro__grid { grid-template-columns:1fr; } }
.intro__media { aspect-ratio:3/2; overflow:hidden; border-radius:3px; background:var(--ph); }
.intro__media img { width:100%; height:100%; object-fit:cover; object-position:center; }
.eyebrow { font-size:12.5px; letter-spacing:.2em; text-transform:uppercase; color:var(--dim); margin-bottom:20px; }
.intro h2 { font-weight:600; font-size:clamp(28px,3.4vw,46px); line-height:1.1; letter-spacing:-.01em; margin:0 0 26px; text-wrap:balance; }
.intro p { font-size:17px; line-height:1.65; color:var(--body); margin:0 0 18px; font-weight:300; }

/* ---------- From Prompt to Product ---------- */
.p2p { background: var(--sand); color: var(--ink); position: relative; }
.p2p__in { max-width:var(--maxw); margin:0 auto; padding: clamp(96px,15vh,190px) var(--gutter) clamp(96px,14vh,170px); }
.p2p__head { display:flex; align-items:flex-end; justify-content:space-between; gap:24px; flex-wrap:wrap; margin-bottom:clamp(48px,8vh,96px); }
.p2p__eyebrow { display:inline-flex; align-items:center; gap:9px; font-size:12px; letter-spacing:.22em; text-transform:uppercase; color:var(--dim); margin-bottom:22px; }
.p2p__title { font-weight:700; font-size:clamp(44px,7.6vw,132px); line-height:.92; letter-spacing:-.025em; margin:0; text-wrap:balance; }
.p2p__lead { font-size:16px; line-height:1.6; color:var(--muted); max-width:33ch; margin:0 0 14px; font-weight:300; }
.p2p__grid { display:grid; grid-template-columns:minmax(0,.86fr) minmax(0,1.14fr); gap:clamp(36px,5vw,84px); align-items:start; }
@media (max-width:860px){ .p2p__grid{ grid-template-columns:1fr; } }
.p2p__step { display:flex; gap:18px; align-items:flex-start; width:100%; padding:clamp(14px,2vh,20px) 4px; border-top:1px solid rgba(20,19,15,.12); opacity:.4; transition:opacity .5s ease; }
.p2p__step:first-child { border-top:none; }
.p2p__step.is-on { opacity:1; }
.p2p__num { font-family:var(--font-heading); font-size:15px; color:var(--dim); font-variant-numeric:tabular-nums; padding-top:6px; transition:color .5s ease; min-width:26px; }
.p2p__step.is-on .p2p__num { color: var(--accent); }
.p2p__name { display:block; font-family:var(--font-heading); font-weight:600; font-size:clamp(26px,3vw,44px); line-height:1.02; letter-spacing:-.01em; color:var(--ink); margin-bottom:0; transition:margin .5s ease; }
.p2p__step.is-on .p2p__name { margin-bottom:10px; }
.p2p__desc { display:block; font-size:15px; line-height:1.55; color:var(--body); font-weight:300; max-height:0; opacity:0; overflow:hidden; transition:max-height .55s ease, opacity .5s ease; }
.p2p__step.is-on .p2p__desc { max-height:96px; opacity:1; }
.p2p__track { height:2px; background:rgba(20,19,15,.12); border-radius:2px; margin-top:clamp(24px,3vh,34px); overflow:hidden; }
#p2p-bar { height:100%; width:0; background:var(--accent); transition:width .12s linear; }
#p2p-saved { margin-top:20px; font-size:13.5px; color:var(--muted); font-weight:300; }
#p2p-saved strong { color:var(--ink); font-weight:600; }
#p2p-promptbar {
  display:flex; align-items:center; gap:10px;
  border:1.5px solid var(--line-2); background:rgba(255,255,255,.6);
  border-radius:12px; padding:13px 16px; margin-bottom:16px;
  font-size:14.5px; color:var(--ink-2);
  transition:border-color .3s ease, box-shadow .3s ease;
}
#p2p-caret { color:var(--accent); font-weight:700; flex:0 0 auto; }
.p2p__foot { display:flex; justify-content:space-between; align-items:center; margin-top:12px; font-size:11.5px; letter-spacing:.14em; text-transform:uppercase; color:var(--dim); }
#p2p-pct { font-variant-numeric:tabular-nums; }

/* ---------- Khám phá (rows + carousel) ---------- */
.rows { max-width:var(--maxw); margin:0 auto; padding:0 var(--gutter) clamp(64px,12vh,140px); }
.row { padding: clamp(48px,8vh,96px) 0; border-top: 1px solid var(--line); }
.row__head { display:flex; align-items:flex-end; justify-content:space-between; gap:20px; margin-bottom:clamp(24px,3vh,36px); }
.row__headL { display:flex; align-items:flex-end; gap:clamp(14px,2vw,30px); }
.row__num { font-family:var(--font-heading); font-weight:600; font-size:clamp(13px,1.2vw,17px); color:var(--dim); font-variant-numeric:tabular-nums; letter-spacing:.02em; line-height:1; padding-bottom:clamp(3px,.5vw,7px); flex:0 0 auto; }
.row__kicker { font-size:11.5px; letter-spacing:.18em; text-transform:uppercase; color:var(--dim); margin-bottom:8px; }
.row__title { font-family:var(--font-heading); font-weight:600; font-size:clamp(26px,3vw,40px); line-height:1.02; color:var(--ink); display:block; }
a.row__title:hover { color: var(--accent); }
.link-all { display:inline-flex; align-items:center; gap:6px; color:var(--accent); font-size:14px; font-weight:500; letter-spacing:.01em; white-space:nowrap; }

.carousel { min-width:0; position:relative; }
.carousel__view { overflow:hidden; }
.carousel__track { display:flex; gap:24px; padding-bottom:6px; will-change:transform; transition:transform .55s cubic-bezier(.22,.61,.36,1); }
.carousel__track > * { flex: 0 0 calc((100% - 48px) / 3); }
@media (max-width:1024px){ .carousel__track > * { flex:0 0 calc((100% - 24px) / 2); } }
@media (max-width:640px) { .carousel__track > * { flex:0 0 100%; } }
.carousel__foot { display:flex; align-items:center; justify-content:space-between; margin-top:18px; }
.carousel__dots { display:flex; gap:7px; }
.carousel__dots button { width:7px; height:7px; border-radius:50%; cursor:pointer; border:none; padding:0; background:rgba(20,19,15,.18); transition:background .3s; }
.carousel__dots button.is-active { background: var(--ink); }
.carousel__nav { display:flex; gap:10px; margin-left:auto; }

.rbtn {
  width:42px; height:42px; border-radius:50%;
  border:1px solid rgba(20,19,15,.18); background:none; cursor:pointer;
  font-size:15px; color:var(--ink); display:flex; align-items:center; justify-content:center;
  transition: background .2s, color .2s, border-color .2s, opacity .2s;
}
.rbtn:hover:not(:disabled) { background:var(--ink); color:var(--bg); border-color:var(--ink); }
.rbtn:disabled { opacity:.3; cursor:default; }

/* card trong carousel trang chủ */
.card { display:flex; flex-direction:column; }
.card__media { aspect-ratio:16/11; overflow:hidden; border-radius:3px; background:var(--ph); margin-bottom:16px; }
.card__media img { width:100%; height:100%; object-fit:cover; transition:transform .6s cubic-bezier(.2,.7,.2,1); }
.card:hover .card__media img { transform:scale(1.05); }
.card__title { font-weight:600; font-size:20px; line-height:1.2; letter-spacing:-.005em; margin:0 0 10px; text-wrap:pretty; }
.card__title a { color:var(--ink); }
.card__title a:hover { color:var(--accent); }
.card__excerpt { font-size:14px; line-height:1.55; color:var(--muted); margin:0 0 14px; font-weight:300; min-height:calc(1.55em*2); display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; }
.card__meta { display:flex; align-items:center; justify-content:space-between; gap:10px; font-size:12px; color:var(--dim); margin-top:auto; }
.card__by { display:flex; align-items:center; gap:8px; min-width:0; }
.avatar { width:22px; height:22px; border-radius:50%; background:#dcd7cd; display:inline-block; flex-shrink:0; object-fit:cover; }
.card__author { white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.card__sep { opacity:.6; }
.card__read { display:inline-flex; align-items:center; gap:5px; flex-shrink:0; white-space:nowrap; }

/* ==========================================================================
   ARCHIVE (Tin tức / Kiến thức / Tài nguyên)
   ========================================================================== */
.arc { flex:1; width:100%; max-width:var(--maxw); margin:0 auto; padding: clamp(36px,5.5vh,64px) var(--gutter) clamp(64px,9vh,104px); }

.crumbs { font-size:12.5px; letter-spacing:.14em; text-transform:uppercase; color:var(--dim); display:flex; gap:10px; align-items:center; flex-wrap:wrap; margin-bottom:clamp(30px,4.5vh,48px); }
.crumbs a { color:var(--dim); }
.crumbs a:hover { color:var(--ink); }
.crumbs__cur { color:var(--ink); }

.arc__head { display:grid; grid-template-columns:1.02fr .98fr; gap:clamp(32px,4vw,64px); align-items:center; margin-bottom:clamp(48px,7vh,84px); }
@media (max-width:900px){ .arc__head { grid-template-columns:1fr; } }
.arc__intro { display:flex; flex-direction:column; gap:20px; }
.arc__badge { display:flex; align-items:center; gap:12px; }
.arc__badge i {
  width:34px; height:34px; border-radius:9px; background:var(--accent);
  display:inline-flex; align-items:center; justify-content:center; flex-shrink:0;
  box-shadow: 0 4px 14px var(--accent-glow);
}
.arc__badge i > b { width:10px; height:10px; border-radius:2px; background:#fff; display:block; }
.arc__badge span { font-size:12.5px; letter-spacing:.2em; text-transform:uppercase; color:var(--dim); }
.arc__title { font-family:var(--font-heading); font-weight:700; font-size:clamp(52px,7vw,86px); line-height:.98; letter-spacing:-.025em; color:var(--ink); margin:0; }
.arc__desc { font-size:clamp(15px,1.25vw,17px); line-height:1.7; color:var(--body); max-width:520px; margin:0; }

/* Hero carousel nhỏ bên phải */
.achero { position:relative; border-radius:14px; overflow:hidden; aspect-ratio:4/3; box-shadow:0 24px 60px -24px rgba(22,19,15,.35); background:var(--ink); }
.achero__track { display:flex; height:100%; will-change:transform; }
.achero__slide { position:relative; flex:0 0 100%; width:100%; height:100%; overflow:hidden; display:block; }
.achero__slide img { position:absolute; inset:0; width:100%; height:100%; object-fit:cover; }
.achero__scrim { position:absolute; inset:0; background:linear-gradient(180deg,rgba(20,19,15,.05) 0%,rgba(20,19,15,.12) 40%,rgba(20,19,15,.84) 100%); }
.achero__body { position:absolute; left:22px; right:22px; bottom:22px; color:#fff; text-shadow:0 2px 16px rgba(20,19,15,.55); display:flex; flex-direction:column; align-items:flex-start; }
.achero__kicker { display:inline-flex; align-items:center; gap:8px; font-size:11px; letter-spacing:.18em; text-transform:uppercase; margin-bottom:11px; opacity:.94; }
.achero__title { font-family:var(--font-heading); font-weight:600; font-size:clamp(20px,2vw,27px); line-height:1.16; text-wrap:balance; color:#fff; }
.achero__arrow {
  position:absolute; top:50%; margin-top:-19px; z-index:3;
  width:38px; height:38px; border-radius:50%;
  border:1px solid rgba(246,244,239,.55);
  background:rgba(20,19,15,.28); backdrop-filter:blur(4px); -webkit-backdrop-filter:blur(4px);
  cursor:pointer; font-size:13px; color:#fff;
  display:flex; align-items:center; justify-content:center; transition:background .25s ease;
}
.achero__arrow:hover { background: var(--ink); }
.achero__arrow--prev { left:14px; }
.achero__arrow--next { right:14px; }
.achero__dots { position:absolute; left:0; right:0; bottom:14px; display:flex; justify-content:center; gap:7px; z-index:3; }
.achero__dots button {
  height:7px; width:7px; border-radius:999px; border:none; padding:0; cursor:pointer;
  background:rgba(246,244,239,.45); transition:background .3s ease, width .3s ease;
}
.achero__dots button.is-active { background:#fff; width:20px; }

/* thanh "Tất cả bài viết + Sắp xếp" */
.arc__bar {
  display:flex; align-items:center; justify-content:space-between; gap:16px; flex-wrap:wrap;
  border-top:1px solid var(--hair); padding-top:22px; margin-bottom:clamp(28px,4vh,40px);
}
.arc__count { font-family:var(--font-heading); font-weight:500; font-size:23px; color:var(--ink); display:flex; align-items:baseline; gap:9px; }
.arc__count span { font-family:'Be Vietnam Pro', sans-serif; font-size:15px; color:var(--dim); }
.sortbox { display:inline-flex; align-items:center; gap:10px; font-size:13.5px; color:var(--muted); }
.sortbox > span { letter-spacing:.04em; white-space:nowrap; }
.sortbox__wrap { position:relative; display:inline-flex; align-items:center; }
.sortbox select {
  appearance:none; -webkit-appearance:none; -moz-appearance:none;
  font-size:14px; font-weight:600; color:var(--ink); background:#fff;
  border:1px solid rgba(20,19,15,.2); border-radius:999px;
  padding:9px 40px 9px 16px; cursor:pointer; outline:none;
  box-shadow:0 2px 10px -4px rgba(20,19,15,.25);
}
.sortbox__caret { position:absolute; right:16px; pointer-events:none; font-size:9px; color:var(--dim); }

/* layout sidebar + grid */
.arc__body { display:grid; grid-template-columns:210px 1fr; gap:clamp(28px,3vw,52px); align-items:start; }
.arc__body--nofilter { grid-template-columns:1fr; }
@media (max-width:860px){ .arc__body { grid-template-columns:1fr; } }

.filters { position:sticky; top:94px; display:flex; flex-direction:column; gap:4px; }
@media (max-width:860px){ .filters { position:static; flex-direction:row; flex-wrap:wrap; margin-bottom:24px; } }
.filters__h { font-size:11.5px; letter-spacing:.16em; text-transform:uppercase; color:var(--dim); margin-bottom:10px; }
@media (max-width:860px){ .filters__h { width:100%; margin-bottom:4px; } }
.filters button {
  display:flex; align-items:center; justify-content:space-between; gap:8px;
  text-align:left; border:none; cursor:pointer;
  font-size:15px; padding:10px 13px; border-radius:9px;
  background:none; color:var(--ink-3); transition:background .2s, color .2s;
}
.filters button:hover { background: rgba(20,19,15,.05); }
.filters button.is-active { background: var(--ink); color: var(--bg); font-weight:600; }
.filters button > span { font-size:13px; color:var(--dim); font-variant-numeric:tabular-nums; }
.filters button.is-active > span { color: rgba(246,244,239,.7); }

/* grid card */
.arc__grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:clamp(30px,3.4vh,46px) clamp(24px,2.4vw,36px); }
@media (max-width:1100px){ .arc__grid { grid-template-columns:repeat(2,minmax(0,1fr)); } }
@media (max-width:640px) { .arc__grid { grid-template-columns:1fr; } }

.acard { display:flex; flex-direction:column; gap:15px; color:inherit; animation: cardRise .45s ease both; }
.acard__media { position:relative; aspect-ratio:4/3; border-radius:9px; overflow:hidden; background:#EDE7DC; display:block; }
.acard__media img { position:absolute; inset:0; width:100%; height:100%; object-fit:cover; transition:transform .65s cubic-bezier(.2,.7,.2,1); }
.acard:hover .acard__media img { transform: scale(1.055); }
.acard__chip {
  position:absolute; left:14px; top:14px;
  background:rgba(246,244,239,.92); backdrop-filter:blur(4px);
  color:var(--ink); font-size:11.5px; padding:6px 12px; border-radius:999px; pointer-events:none;
}
.acard__in { display:flex; flex-direction:column; gap:9px; }
.acard__title {
  font-family:var(--font-heading); font-weight:500; font-size:clamp(19px,1.5vw,22px); line-height:1.2;
  color:var(--ink); margin:0; transition:color .2s ease;
  min-height:calc(1.2em*2); display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden;
}
.acard:hover .acard__title { color: var(--accent); }
.acard__desc { font-size:14px; line-height:1.55; color:var(--muted); margin:0; min-height:calc(1.55em*2); display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; }
.acard__meta { display:flex; align-items:center; justify-content:space-between; gap:10px; font-size:12.5px; color:var(--dim); margin-top:2px; }
.acard__by { display:flex; align-items:center; gap:8px; min-width:0; }
.acard__by > span:first-child { white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.acard__tags { display:flex; flex-wrap:wrap; gap:7px; margin-top:5px; }
.acard__tags span { font-size:11.5px; color:var(--muted); border:1px solid var(--hair-2); border-radius:999px; padding:4px 11px; }

/* pagination */
.pager { display:flex; align-items:center; justify-content:center; gap:22px; margin-top:clamp(48px,7vh,80px); }
.pager__dots { display:flex; align-items:center; gap:7px; }
.pager__dots button { width:7px; height:7px; border-radius:50%; cursor:pointer; border:none; padding:0; background:rgba(20,19,15,.18); transition:background .3s ease; }
.pager__dots button.is-active { background: var(--ink); }
.pager__box { display:flex; align-items:center; justify-content:center; gap:10px; margin-top:18px; font-size:14px; color:var(--dim); }
.pager__box input {
  width:46px; height:38px; text-align:center;
  border:1px solid var(--line-3); border-radius:8px; background:#fff;
  font-size:14px; font-weight:600; color:var(--ink); font-variant-numeric:tabular-nums; outline:none;
}
.pager__box span { font-variant-numeric:tabular-nums; }

.empty { padding:60px 0 100px; text-align:center; color:var(--dim); font-size:16px; font-weight:300; }

/* ==========================================================================
   ARTICLE (post.hbs)
   ========================================================================== */
.art { flex:1; width:100%; max-width:820px; margin:0 auto; padding: clamp(30px,4.5vh,52px) clamp(20px,4.5vw,40px) clamp(64px,9vh,104px); animation: fadeIn .4s ease both; }
.art__back { display:inline-flex; align-items:center; gap:8px; font-size:13.5px; color:var(--muted); margin-bottom:clamp(28px,4vh,44px); }
.art__back:hover { color: var(--ink); }
.art__kicker { font-size:12.5px; letter-spacing:.14em; text-transform:uppercase; color:var(--dim); margin-bottom:14px; }
.art__title { font-family:var(--font-heading); font-weight:700; font-size:clamp(32px,4.6vw,52px); line-height:1.08; letter-spacing:-.02em; color:var(--ink); margin:0 0 clamp(22px,3vh,30px); }
.art__fig { margin:0 0 clamp(18px,2.5vh,26px); }
.art__fig > div { border-radius:14px; overflow:hidden; aspect-ratio:16/9; box-shadow:0 24px 60px -30px rgba(22,19,15,.4); background:var(--ph); }
.art__fig img { width:100%; height:100%; object-fit:cover; display:block; }
.art__fig figcaption { font-size:12.5px; color:var(--dim); margin-top:8px; font-style:italic; }
/* Ảnh feature dạng GIF/WEBP (ảnh động): hiện full, không cắt (class 'is-full' gắn qua JS) */
.art__fig.is-full > div { aspect-ratio:auto; overflow:visible; border-radius:0; box-shadow:none; background:transparent; text-align:center; }
.art__fig.is-full img { width:auto; height:auto; max-width:100%; max-height:78vh; object-fit:contain; border-radius:14px; box-shadow:0 24px 60px -30px rgba(22,19,15,.4); margin:0 auto; }
.art__bar {
  display:flex; align-items:center; justify-content:space-between; gap:12px;
  border-top:1px solid var(--hair); border-bottom:1px solid var(--hair);
  padding:14px 0; margin-bottom:clamp(28px,4vh,38px);
  font-size:13.5px; color:var(--dim);
}
.art__author { display:inline-flex; align-items:center; gap:10px; min-width:0; }
.art__ava {
  width:34px; height:34px; border-radius:999px; background:var(--accent); color:#fff;
  display:inline-flex; align-items:center; justify-content:center;
  font-size:13px; font-weight:600; flex-shrink:0; overflow:hidden; object-fit:cover;
}
.art__author a { color:var(--ink); font-weight:500; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.art__read { display:inline-flex; align-items:center; gap:6px; flex-shrink:0; }
.art__lead { font-family:var(--font-heading); font-weight:400; font-size:clamp(19px,1.9vw,23px); line-height:1.55; color:var(--ink-2); margin:0 0 clamp(30px,4vh,42px); }

/* nội dung Koenig */
.post-content { font-size:16.5px; line-height:1.75; color:var(--ink-3); }
.post-content > * { margin:0 0 clamp(26px,3.5vh,36px); }
.post-content h2 { font-family:var(--font-heading); font-weight:600; font-size:clamp(23px,2.4vw,29px); line-height:1.2; color:var(--ink); margin:clamp(30px,4vh,44px) 0 12px; }
.post-content h3 { font-family:var(--font-heading); font-weight:600; font-size:clamp(19px,1.8vw,23px); line-height:1.25; color:var(--ink); margin:clamp(24px,3vh,32px) 0 10px; }
.post-content h4 { font-family:var(--font-heading); font-weight:600; font-size:18px; color:var(--ink); margin:24px 0 8px; }
.post-content p { margin:0 0 16px; }
.post-content a { text-decoration:underline; text-underline-offset:3px; }
.post-content ul, .post-content ol { padding-left:22px; margin:0 0 16px; }
.post-content li { margin-bottom:8px; }
.post-content img { border-radius:12px; }
.post-content figure { margin: clamp(26px,3.5vh,36px) 0; }
.post-content figcaption { font-size:12.5px; color:var(--dim); margin-top:8px; font-style:italic; text-align:center; }
.post-content blockquote {
  margin:16px 0; padding:12px 18px;
  border-left:3px solid var(--accent); background:#fff; border-radius:0 10px 10px 0;
  font-size:16px; line-height:1.7; color:var(--ink-2);
}
/* Nút "Copy prompt" — chỉ xuất hiện ở bài có tag 'prompt' (gắn qua JS) */
.post-content blockquote.has-copy { position:relative; padding-top:44px; }
.prompt-copy {
  position:absolute; top:8px; right:8px;
  font-family:inherit; font-weight:600; font-size:12.5px; line-height:1; letter-spacing:.01em;
  color:#fff; background:var(--accent); border:none; border-radius:7px;
  padding:7px 12px; cursor:pointer; opacity:.9; transition:opacity .15s ease, background .15s ease;
}
.prompt-copy:hover { opacity:1; }
.prompt-copy:active { transform:translateY(1px); }
.prompt-copy.is-done { background:#1a7f37; }
.post-content hr { border:none; border-top:1px solid var(--hair); margin:clamp(30px,4vh,44px) 0; }
.post-content code { background:rgba(20,19,15,.06); border-radius:4px; padding:2px 6px; font-family:ui-monospace,SFMono-Regular,Menlo,monospace; font-size:.88em; }
.post-content pre { background:var(--ink); color:var(--bg); padding:20px 22px; border-radius:10px; overflow-x:auto; font-size:14.5px; line-height:1.6; }
.post-content pre code { background:none; padding:0; color:inherit; }
.post-content table { width:100%; border-collapse:collapse; font-size:15px; }
.post-content th, .post-content td { border:1px solid var(--hair); padding:10px 14px; text-align:left; }
.post-content th { background:var(--sand); font-weight:600; }

.kg-card { margin: clamp(26px,3.5vh,36px) 0; }
/* Ảnh chèn giữa bài: luôn vừa khít cột nội dung, bo góc, căn giữa.
   Bài viết hẹp (820px) nên không kéo ảnh rộng ra ngoài — tránh tràn/lệch. */
.post-content img { width: 100%; height: auto; border-radius: 12px; }
.kg-image-card, .kg-card { text-align: center; }
.kg-image-card img { margin: 0 auto; }
.kg-width-wide,
.kg-width-full  { width: 100%; margin-left: 0; transform: none; max-width: 100%; }
.kg-image-card figcaption,
.post-content figcaption { text-align: center; }
.kg-callout-card { display:flex; gap:12px; padding:18px 20px; border-radius:12px; background:var(--sand); }
.kg-callout-emoji { flex:0 0 auto; }
.kg-bookmark-card a { display:flex; border:1px solid var(--hair); border-radius:12px; overflow:hidden; text-decoration:none; color:inherit; background:#fff; }
.kg-bookmark-content { flex:1; padding:18px 20px; min-width:0; }
.kg-bookmark-title { font-weight:600; font-size:16px; color:var(--ink); margin-bottom:6px; }
.kg-bookmark-description { font-size:14px; color:var(--muted); line-height:1.5; display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; }
.kg-bookmark-metadata { display:flex; align-items:center; gap:8px; margin-top:12px; font-size:13px; color:var(--dim); }
.kg-bookmark-icon { width:18px; height:18px; }
.kg-bookmark-thumbnail { flex:0 0 180px; }
.kg-bookmark-thumbnail img { width:100%; height:100%; object-fit:cover; }
.kg-embed-card { display:flex; flex-direction:column; align-items:center; width:100%; }
/* Video nhúng (YouTube, Vimeo…): luôn rộng hết khung, giữ tỷ lệ 16:9 */
.kg-embed-card iframe[src*="youtube"],
.kg-embed-card iframe[src*="youtu.be"],
.kg-embed-card iframe[src*="vimeo"],
.kg-embed-card iframe[src*="player"] {
  width:100% !important;
  height:auto !important;
  aspect-ratio:16/9;
  border-radius:12px;
  display:block;
}
/* Các nhúng khác (tweet, card…) chỉ giới hạn không tràn */
.kg-embed-card iframe { max-width:100%; }
.kg-gallery-container { display:flex; flex-direction:column; gap:12px; }
.kg-gallery-row { display:flex; gap:12px; }
.kg-gallery-image img { width:100%; height:100%; object-fit:cover; }

/* liên quan */
.art__sec { margin-top:clamp(44px,6vh,64px); border-top:1px solid var(--hair); padding-top:clamp(24px,3.5vh,36px); }
.art__sec h2 { font-family:var(--font-heading); font-weight:600; font-size:20px; color:var(--ink); margin:0 0 20px; }
.rel { display:flex; flex-direction:column; }
.rel a { display:flex; align-items:center; gap:18px; color:inherit; padding:16px 0; border-top:1px solid var(--hair-3); }
.rel a:first-child { border-top:none; }
.rel__media { flex:0 0 clamp(96px,14vw,132px); width:clamp(96px,14vw,132px); aspect-ratio:4/3; border-radius:8px; overflow:hidden; background:var(--hair-3); }
.rel__media img { width:100%; height:100%; object-fit:cover; transition:transform .5s ease; }
.rel a:hover .rel__media img { transform: scale(1.06); }
.rel__in { flex:1; min-width:0; display:flex; flex-direction:column; gap:8px; }
.rel__title { font-family:var(--font-heading); font-weight:600; font-size:clamp(16px,1.4vw,18px); line-height:1.3; color:var(--ink); text-wrap:pretty; }
.rel__meta { display:flex; align-items:center; justify-content:space-between; gap:10px; font-size:12.5px; color:var(--dim); }
.rel__meta > span:first-child { min-width:0; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }

.art__backbtn { text-align:center; margin-top:clamp(44px,6vh,64px); }
.art__backbtn a {
  display:inline-flex; align-items:center; gap:8px; font-size:14px; color:var(--ink);
  border:1px solid #DCD6CA; border-radius:999px; padding:12px 26px;
  transition: background .2s, color .2s, border-color .2s;
}
.art__backbtn a:hover { background:var(--ink); color:var(--bg); border-color:var(--ink); }

/* ==========================================================================
   FOOTER
   ========================================================================== */
.ftr { background: var(--ink); color: var(--bg); margin-top:auto; position:relative; overflow:hidden; }
.ftr__glow-a {
  position:absolute; top:-140px; right:-90px; width:440px; height:440px; border-radius:50%;
  background: radial-gradient(circle at center, var(--accent-glow), transparent 68%);
  pointer-events:none;
}
.ftr__glow-b {
  position:absolute; left:-120px; bottom:-160px; width:360px; height:360px; border-radius:50%;
  background: radial-gradient(circle at center, rgba(246,244,239,.05), transparent 70%);
  pointer-events:none;
}
.ftr__in { max-width:var(--maxw); margin:0 auto; padding: clamp(38px,5.5vh,60px) var(--gutter) clamp(24px,3.5vh,34px); position:relative; }

.ftr__top {
  display:grid; grid-template-columns:1.5fr 1fr; gap:clamp(28px,4vw,72px); align-items:end;
  padding-bottom:clamp(26px,4vh,40px); border-bottom:1px solid rgba(246,244,239,.14);
}
@media (max-width:860px){ .ftr__top { grid-template-columns:1fr; align-items:start; } }
.ftr__eyebrow { display:inline-flex; align-items:center; gap:9px; font-size:11.5px; letter-spacing:.2em; text-transform:uppercase; color:var(--accent-lite); margin-bottom:20px; }
.ftr__eyebrow i { width:7px; height:7px; border-radius:50%; background:var(--accent); display:inline-block; }
.ftr__cta { font-family:var(--font-heading); font-weight:700; font-size:clamp(30px,4.6vw,62px); line-height:1.02; letter-spacing:-.02em; text-wrap:balance; }
.ftr__right { display:flex; flex-direction:column; gap:20px; }
.ftr__right p { font-size:15px; line-height:1.65; color:#b8b3a8; margin:0; max-width:42ch; }
.ftr__btns { display:flex; gap:12px; flex-wrap:wrap; }
.btn-fill {
  display:inline-flex; align-items:center; gap:8px;
  background:var(--accent); color:#fff; font-size:14px; font-weight:600;
  padding:12px 22px; border-radius:999px;
  transition: transform .18s ease, filter .18s ease;
}
.btn-fill:hover { color:#fff; transform:translateY(-2px); filter:brightness(1.1); }
.btn-ghost {
  display:inline-flex; align-items:center; gap:8px;
  border:1px solid rgba(246,244,239,.32); color:var(--bg); font-size:14px; font-weight:500;
  padding:12px 22px; border-radius:999px;
  transition: background .2s ease, border-color .2s ease;
}
.btn-ghost:hover { color:var(--bg); background:rgba(246,244,239,.1); border-color:var(--bg); }

.ftr__cols { display:grid; grid-template-columns:1.3fr 1fr; gap:clamp(32px,5vw,72px); padding:clamp(22px,3.2vh,34px) 0; }
@media (max-width:860px){ .ftr__cols { grid-template-columns:1fr; } }
.ftr__h { font-size:11.5px; letter-spacing:.18em; text-transform:uppercase; color:#8f897d; margin-bottom:16px; }
.ftr__links { display:grid; grid-template-columns:1fr 1fr; gap:11px 24px; }
.ftr__contact { display:flex; flex-direction:column; gap:8px; }
.ftr__addr { color:#8f897d; font-size:13.5px; line-height:1.55; max-width:34ch; }
.ftr a { color:#c9c4ba; font-size:14.5px; }
.ftr a:hover { color:#fff; }

.ftr__bot {
  display:flex; align-items:center; justify-content:space-between; gap:16px; flex-wrap:wrap;
  padding-top:24px; border-top:1px solid rgba(246,244,239,.12);
  font-size:12.5px; color:#8f897d;
}
.ftr__up { display:inline-flex; align-items:center; gap:8px; color:#c9c4ba; }
.ftr__up i {
  display:inline-flex; width:24px; height:24px; border-radius:50%;
  border:1px solid rgba(246,244,239,.3); align-items:center; justify-content:center; font-style:normal;
}

/* ---------- FAB ---------- */
.fabs { position:fixed; right:clamp(14px,2vw,26px); bottom:clamp(14px,2vw,26px); z-index:90; display:flex; flex-direction:column; gap:10px; }
.fab {
  width:44px; height:44px; border-radius:50%; border:none;
  background:var(--ink); color:var(--bg); cursor:pointer; font-size:17px;
  display:flex; align-items:center; justify-content:center;
  box-shadow:0 8px 22px -8px rgba(20,19,15,.6);
  transition: transform .18s ease;
}
.fab--up:hover   { transform: translateY(-2px); }
.fab--down:hover { transform: translateY(2px); }
@media (max-width:640px){ .fabs { display:none; } }

/* ---------- Tài liệu tham khảo ---------- */
.refs { margin:0; padding-left:22px; display:flex; flex-direction:column; gap:12px; }
.refs li { font-size:14.5px; line-height:1.65; color:var(--ink-3); }
.refs a { color:var(--accent); text-decoration:underline; text-underline-offset:2px; word-break:break-all; }

/* ==========================================================================
   SEARCH MODAL
   ========================================================================== */
.srch {
  position: fixed; inset: 0; z-index: 200;
  display: flex; flex-direction: column; align-items: center;
  padding-top: clamp(56px, 11vh, 140px);
  background: rgba(20,19,15,.55);
  backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
  animation: fadeIn .18s ease both;
}
.srch[hidden] { display: none; }
.srch__panel {
  width: min(92vw, 640px);
  background: var(--bg);
  border-radius: 18px;
  border: 1px solid var(--line);
  box-shadow: 0 40px 100px -30px rgba(20,19,15,.6);
  padding: 20px;
  animation: fadeUp .26s ease both;
}
.srch__bar {
  display: flex; align-items: center; gap: 14px;
  padding: 6px 6px 18px;
  border-bottom: 1px solid var(--line);
}
.srch__icon { font-size: 22px; color: var(--accent); flex: 0 0 auto; }
.srch__input {
  flex: 1; border: none; outline: none; background: none;
  font-family: inherit; font-size: clamp(19px, 2.2vw, 26px); font-weight: 500;
  color: var(--ink); min-width: 0;
}
.srch__input::placeholder { color: var(--dim); }
.srch__esc {
  flex: 0 0 auto; border: 1px solid var(--line-2); background: none; cursor: pointer;
  border-radius: 8px; padding: 5px 9px; font-size: 12px; color: var(--muted);
  transition: background .2s;
}
.srch__esc:hover { background: rgba(20,19,15,.05); }

.srch__body { padding-top: 16px; }
.srch__heading {
  font-size: 11.5px; letter-spacing: .16em; text-transform: uppercase;
  color: var(--dim); margin-bottom: 6px; padding: 0 2px;
}
.srch__list { max-height: min(52vh, 440px); overflow-y: auto; margin: 0 -6px; padding: 0 6px; }
.srch__list::-webkit-scrollbar { width: 6px; }
.srch__list::-webkit-scrollbar-thumb { background: rgba(20,19,15,.18); border-radius: 999px; }

.srch__item {
  display: flex; align-items: center; gap: 16px;
  padding: 12px 8px; border-radius: 12px; text-decoration: none; color: inherit;
  transition: background .15s;
}
.srch__item:hover, .srch__item.is-cur { background: rgba(20,19,15,.05); color: inherit; }
.srch__thumb { flex: 0 0 76px; width: 76px; height: 56px; border-radius: 6px; overflow: hidden; background: var(--ph); }
.srch__thumb img { width: 100%; height: 100%; object-fit: cover; }
.srch__txt { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 4px; }
.srch__kicker {
  display: block;
  font-size: 11px; letter-spacing: .12em; text-transform: uppercase;
  color: var(--accent); line-height: 1.2;
}
.srch__title {
  display: block;
  font-family: var(--font-heading); font-weight: 600; font-size: 16px; line-height: 1.3; color: var(--ink);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.srch__by { display: block; font-size: 12px; color: var(--dim); line-height: 1.2; }
.srch__arrow { flex: 0 0 auto; color: var(--dim); font-size: 16px; }

.srch__none { padding: 34px 8px; text-align: center; color: var(--dim); font-size: 15px; }
.srch__none b { color: var(--ink); font-weight: 600; }


/* Tài liệu tham khảo do người viết tự thêm trong nội dung bài */
.post-content h2 + ol { padding-left: 22px; }
.post-content ol li { margin-bottom: 10px; line-height: 1.65; }
.post-content ol li a { word-break: break-word; }

/* ---------- Nút tải tài nguyên (bài Tài nguyên) ---------- */
.art__titlerow { display:flex; align-items:flex-start; justify-content:space-between; gap:20px; margin:0 0 clamp(22px,3vh,30px); }
.art__titlerow .art__title { margin:0; flex:1; min-width:0; }
.art__dl {
  flex:0 0 auto; margin-top:6px;
  display:inline-flex; align-items:center; gap:8px;
  border:1px solid var(--accent); background:var(--accent); color:#fff;
  font-size:13.5px; font-weight:600; font-family:inherit;
  padding:9px 16px; border-radius:999px; cursor:pointer; white-space:nowrap;
  transition:filter .18s ease, transform .18s ease, opacity .18s ease;
}
.art__dl:hover { filter:brightness(1.08); transform:translateY(-1px); }
.art__dl[data-empty="1"] { background:none; color:var(--muted); border-color:var(--line-3); }
.art__dl svg { flex:0 0 auto; }
.art__dl-msg { margin:-8px 0 22px; font-size:13.5px; color:#b4462f; }
@media (max-width:560px){
  .art__titlerow { flex-direction:column; gap:14px; }
  .art__dl span { display:inline; }
}

/* Ghost File Card (khi upload file trong bài) */
.kg-file-card { margin: clamp(26px,3.5vh,36px) 0; }
.kg-file-card > a.kg-file-card-container {
  display:flex; align-items:center; justify-content:space-between; gap:16px;
  border:1px solid var(--hair); border-radius:12px; padding:16px 18px;
  background:#fff; text-decoration:none; color:inherit;
  transition:border-color .2s ease, box-shadow .2s ease;
}
.kg-file-card > a.kg-file-card-container:hover { border-color:var(--accent); box-shadow:0 6px 18px -10px rgba(20,19,15,.3); }
.kg-file-card-contents { min-width:0; }
.kg-file-card-title { font-weight:600; font-size:15.5px; color:var(--ink); }
.kg-file-card-caption { font-size:13px; color:var(--muted); margin-top:2px; }
.kg-file-card-filename { font-size:12.5px; color:var(--dim); margin-top:4px; }
.kg-file-card-metadata { font-size:12.5px; color:var(--dim); }
.kg-file-card-icon { flex:0 0 auto; width:24px; height:24px; color:var(--accent); }

/* ---------- Nút tải trên card (trang Tài nguyên) ---------- */
.acard__in { position: relative; }
.acard__dl {
  position: absolute; top: 0; right: 0;
  width: 34px; height: 34px; border-radius: 50%;
  border: 1px solid var(--accent); background: var(--accent); color: #fff;
  display: inline-flex; align-items: center; justify-content: center; cursor: pointer;
  box-shadow: 0 6px 16px -8px var(--accent-glow);
  transition: filter .18s ease, transform .18s ease;
  z-index: 2;
}
.acard__dl:hover { filter: brightness(1.08); transform: translateY(-1px); }
.acard__in:has(.acard__dl:not([hidden])) .acard__title { padding-right: 44px; }