/* Mục Báo cáo của Conan Edu. Conan1: Arial, cam đất làm điểm nhấn, nền trắng ấm. */
:root{
  --primary:#CC4E2D; --ink:#111111; --canvas:#FFFFFF; --muted:#F2F2F2; --warm:#FFF7ED;
  --soft:#5E5650; --line:#E7E1DB; --on-primary:#FFFFFF; --track:#F2ECE6;
  --s1:#CC4E2D; --s2:#2F6FA3; --hcm:#2F6FA3; --hcm-l:#9CC0DE; --hn:#CC4E2D; --hn-l:#EBAE98; --on-dark:#FFFFFF; --on-light:#111111;
  --shadow:0 1px 2px rgba(17,17,17,.06),0 8px 24px rgba(17,17,17,.06);
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --primary:#E8724F; --ink:#EEE8E2; --canvas:#151210; --muted:#211C19; --warm:#2A1E16;
  --soft:#ADA39A; --line:#2F2925; --on-primary:#151210; --track:#2A2420;
  --s1:#D9623F; --s2:#4D8FC4; --hcm:#4D8FC4; --hcm-l:#2A4A66; --hn:#D9623F; --hn-l:#6E3424; --on-dark:#111111; --on-light:#EEE8E2; --shadow:none; color-scheme:dark}}
:root[data-theme="dark"]{
  --primary:#E8724F; --ink:#EEE8E2; --canvas:#151210; --muted:#211C19; --warm:#2A1E16;
  --soft:#ADA39A; --line:#2F2925; --on-primary:#151210; --track:#2A2420;
  --s1:#D9623F; --s2:#4D8FC4; --hcm:#4D8FC4; --hcm-l:#2A4A66; --hn:#D9623F; --hn-l:#6E3424; --on-dark:#111111; --on-light:#EEE8E2; --shadow:none; color-scheme:dark}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--canvas);color:var(--ink);font-family:Arial,"Helvetica Neue",Helvetica,sans-serif;line-height:1.6;font-size:17px}
img{max-width:100%;display:block;height:auto}
a{color:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:4px}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}
.wrap.narrow{max-width:820px}

header.top{border-bottom:1px solid var(--line)}
header.top .wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{font-weight:700;font-size:20px;text-decoration:none}
.brand span{color:var(--primary)}
nav.top a{text-decoration:none;color:var(--soft);font-size:15px;margin-left:22px}
nav.top a:hover,nav.top a[aria-current]{color:var(--primary)}

/* trang mục */
.hero{padding:56px 0 32px}
.eyebrow{color:var(--primary);font-weight:700;font-size:13px;letter-spacing:.12em;text-transform:uppercase;margin:0 0 14px}
.hero h1{font-size:clamp(32px,5vw,52px);line-height:1.1;margin:0 0 16px;max-width:20ch}
.hero h1 em{font-style:normal;color:var(--primary)}
.hero p{font-size:clamp(17px,1.9vw,19px);color:var(--soft);max-width:44rem;margin:0}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:22px;padding-bottom:24px}
a.card{display:flex;flex-direction:column;text-decoration:none;background:var(--canvas);border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:var(--shadow);transition:transform .15s ease,border-color .15s ease}
a.card:hover{transform:translateY(-3px);border-color:var(--primary)}
@media (prefers-reduced-motion:reduce){a.card{transition:none}a.card:hover{transform:none}}
.thumb{aspect-ratio:16/9;background:var(--muted);border-bottom:1px solid var(--line);overflow:hidden}
.thumb img{width:100%;height:100%;object-fit:cover}
.type-thumb,.cover-type{display:flex;flex-direction:column;justify-content:center;gap:10px;padding:24px 28px;background:var(--warm);border-left:8px solid var(--primary)}
.type-thumb span,.cover-type span{color:var(--primary);font-weight:700;font-size:12px;letter-spacing:.1em;text-transform:uppercase}
.type-thumb b{font-size:clamp(20px,2.4vw,26px);line-height:1.2}
.card .body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:6px;flex:1}
.card .kind{color:var(--primary);font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase}
.card h3{font-size:20px;line-height:1.3;margin:0}
.card p{margin:0;color:var(--soft);font-size:15px}
.card .go{margin-top:auto;padding-top:10px;color:var(--primary);font-weight:700;font-size:15px}

/* trang báo cáo */
main .back{display:inline-block;margin:28px 0 22px;color:var(--soft);text-decoration:none;font-size:15px}
main .back:hover{color:var(--primary)}
main h1{font-size:clamp(30px,4.6vw,46px);line-height:1.12;margin:0 0 16px}
.lead{font-size:clamp(18px,2vw,20px);color:var(--soft);margin:0 0 22px}
.actions{display:flex;flex-wrap:wrap;gap:12px}
.top-actions{margin-bottom:28px}
.btn{display:inline-flex;align-items:center;text-decoration:none;font-weight:700;font-size:16px;padding:13px 22px;border-radius:10px;border:2px solid var(--primary)}
.btn.primary{background:var(--primary);color:var(--on-primary)}
.btn.primary:hover{filter:brightness(1.08)}
.btn.ghost{color:var(--primary)}
.btn.ghost:hover{background:var(--warm)}
.cover{margin:0 0 28px}
.cover img{border-radius:12px;border:1px solid var(--line);aspect-ratio:16/9;width:100%}
.cover figcaption,.cnote{color:var(--soft);font-size:14px;margin:8px 0 0}
.cover-type{aspect-ratio:21/9;border-radius:12px;margin-bottom:28px;padding:clamp(24px,6vw,64px)}
.cover-type b{font-size:clamp(26px,4.4vw,44px);line-height:1.12}
.cover-type i{font-style:normal;color:var(--soft);font-size:clamp(16px,2vw,20px)}

.toc{background:var(--muted);border-radius:12px;padding:18px 22px;margin-bottom:12px}
.toc b{display:block;margin-bottom:6px}
.toc ol{margin:0;padding-left:22px;columns:2;column-gap:28px;font-size:15px}
.toc a{text-decoration:none;color:var(--soft)}
.toc a:hover{color:var(--primary)}

section.part{border-top:1px solid var(--line);padding:36px 0 8px;margin-top:28px;scroll-margin-top:12px}
.kicker{color:var(--primary);font-weight:700;font-size:13px;letter-spacing:.12em;text-transform:uppercase;margin:0 0 6px}
section.part h2{font-size:clamp(24px,3vw,30px);line-height:1.2;margin:0 0 16px}
section.part h3{font-size:19px;margin:30px 0 10px}
section.part p{margin:0 0 14px}

.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,300px),1fr));gap:14px;margin:6px 0 20px}
.stat{background:var(--warm);border-radius:12px;padding:18px 20px}
.stat b{display:block;font-size:clamp(30px,4vw,40px);line-height:1.1;color:var(--primary);margin-bottom:6px}
.stat span{font-size:15px}
.method{background:var(--muted);border-radius:12px;padding:6px 22px 10px}
.method ul{padding-left:20px;margin:0 0 8px}
.method li{margin:4px 0;font-size:15px}

/* biểu đồ thanh */
.chart{margin:12px 0 22px}
.legend{display:flex;flex-wrap:wrap;gap:6px 18px;font-size:14px;color:var(--soft);margin-bottom:10px}
.legend span{display:inline-flex;align-items:center;gap:7px}
.sw{width:12px;height:12px;border-radius:3px;display:inline-block}
.bar-row{display:grid;grid-template-columns:minmax(0,15rem) 1fr 4.6rem;align-items:center;gap:12px;padding:5px 0;border-radius:6px}
.bar-row:hover{background:var(--muted)}
.bl{font-size:15px}
.track{height:12px;background:var(--track);border-radius:0 4px 4px 0;overflow:hidden}
.fill{display:block;height:100%;border-radius:0 4px 4px 0}
.s1{background:var(--s1)} .s2{background:var(--s2)}
.bv{font-size:15px;font-weight:700;text-align:right;font-variant-numeric:tabular-nums}
.c-hcm{background:var(--hcm);color:var(--on-dark)} .c-hcm-l{background:var(--hcm-l);color:var(--on-light)}
.c-hn{background:var(--hn);color:var(--on-dark)} .c-hn-l{background:var(--hn-l);color:var(--on-light)}
.stack-row{display:grid;grid-template-columns:minmax(0,11rem) 1fr 3.6rem;align-items:center;gap:12px;padding:6px 0}
.stack{display:flex;gap:2px;height:34px}
.seg-f{display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;overflow:hidden;white-space:nowrap}
.seg-f:first-child{border-radius:0}
.seg-f:last-child{border-radius:0 4px 4px 0}
.pair-row{display:grid;grid-template-columns:minmax(0,15rem) 1fr;gap:12px;align-items:center;padding:7px 0;border-bottom:1px solid var(--line)}
.pair-row:last-of-type{border-bottom:0}
.pair .bar-row{grid-template-columns:1fr 4.6rem;padding:1px 0}
.pair .track{height:10px}

/* bảng */
.tbl{overflow-x:auto;margin:12px 0 10px;border:1px solid var(--line);border-radius:10px}
.tbl table{border-collapse:collapse;width:100%;font-size:15px}
.tbl th,.tbl td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.tbl thead th{background:var(--muted);font-size:14px}
.tbl tbody tr:last-child>*{border-bottom:0}
.tbl tbody th{font-weight:700}
.tbl.num td{text-align:right;font-variant-numeric:tabular-nums}
.tbl.wide table{min-width:760px}

.quote{margin:18px 0 22px;padding:16px 22px;border-left:4px solid var(--primary);background:var(--warm);border-radius:0 12px 12px 0}
.quote blockquote{margin:0;font-style:italic}
.quote figcaption{margin-top:8px;font-size:14px;color:var(--soft)}

ol.points{padding-left:22px;margin:8px 0 18px}
ol.points li{margin:10px 0}
ul.ticks{padding:0;list-style:none;margin:8px 0 18px}
ul.ticks li{padding-left:22px;position:relative;margin:8px 0}
ul.ticks li::before{content:"";position:absolute;left:0;top:.7em;width:10px;height:3px;background:var(--primary);border-radius:2px}

.segs{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:16px;margin:10px 0 18px}
.seg{border:1px solid var(--line);border-radius:12px;padding:18px 20px;background:var(--canvas)}
.seg-head{display:flex;align-items:baseline;gap:12px}
.seg-head b{font-size:30px;color:var(--primary);line-height:1}
.seg-head h3{margin:0!important;font-size:18px!important}
.seg ul{padding-left:18px;margin:12px 0;font-size:15px}
.seg li{margin:4px 0}
.seg-q{font-style:italic;color:var(--soft);font-size:15px;margin:0!important}
.callout{background:var(--warm);border-radius:12px;padding:16px 22px;font-weight:700}
.callout p{margin:0!important}

.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:14px}
.shot{text-decoration:none;display:flex;flex-direction:column;gap:6px;font-size:14px;color:var(--soft)}
.shot img{border-radius:8px;border:1px solid var(--line);aspect-ratio:16/9;width:100%}
.shot:hover img{border-color:var(--primary)}

.source{margin:40px 0 0;padding:22px 24px;border:1px solid var(--line);border-radius:12px;background:var(--muted)}
.source h2{font-size:20px;margin:0 0 10px}
.source p{font-size:15px;margin:0 0 10px;color:var(--soft)}
.source a{color:var(--primary)}
.source .btn.primary{color:var(--on-primary)}
.source .actions{margin-top:14px}

footer{padding:40px 0 56px;color:var(--soft);font-size:15px}
footer a{color:var(--soft)}

@media (max-width:760px){
  nav.top{display:none}
  body{font-size:16px}
  .toc ol{columns:1}
  .bar-row{grid-template-columns:1fr 3.8rem;gap:4px 10px}
  .bar-row>.bl{grid-column:1/-1}
  .pair-row{grid-template-columns:1fr;gap:4px}
  .pair .bar-row{grid-template-columns:1fr 3.8rem}
  .stack-row{grid-template-columns:1fr 3.2rem;gap:4px 10px}
  .stack-row>.bl{grid-column:1/-1}
  .seg-f{font-size:11px}
}