/* agent-agile-team — trang giới thiệu. Cùng hệ hiển thị với trang chủ Agent Data Studio
   (font, màu, khoảng cách, thành phần), chép và chỉnh lại cho trang này. */
:root{
  --bg:#ffffff; --bg-tint:#f7f9fc; --surface:#ffffff; --surface-2:#f4f6fa; --surface-3:#eef1f6;
  --border:#e4e8ef; --border-strong:#d3d9e3; --text:#14161b; --muted:#565d69; --faint:#666c78;
  --accent:#2361e6; --accent-ink:#1b4fd0; --accent-weak:#e9f0fe; --accent-glow:rgba(47,109,246,.16);
  --gold:#a86f00; --gold-weak:#fdf3d7;
  --ok:#0b7a45; --ok-weak:#e4f5ec; --warn:#a86a05; --danger:#bb3645; --danger-weak:#fdecee;
  --code-bg:#0f1116; --code-text:#e8ebf1; --code-border:#20242e;
  --radius:16px; --radius-sm:11px;
  --shadow-sm:0 1px 2px rgba(16,24,40,.05),0 1px 3px rgba(16,24,40,.04);
  --shadow-md:0 8px 24px -8px rgba(16,24,40,.12),0 2px 6px rgba(16,24,40,.05);
  --shadow-lg:0 30px 70px -24px rgba(20,40,90,.28);
  --mono:"JetBrains Mono",ui-monospace,"Cascadia Code",Consolas,monospace;
  --font:"Be Vietnam Pro",-apple-system,"Segoe UI",Roboto,"Noto Sans",sans-serif;
  --maxw:1160px;
}
@media (prefers-color-scheme:dark){
  :root{
    --bg:#0e0f13; --bg-tint:#111318; --surface:#16181d; --surface-2:#1b1e24; --surface-3:#22262e;
    --border:#282c34; --border-strong:#343a44; --text:#e9ebef; --muted:#a4abb6; --faint:#8d949f;
    --accent:#5b8cff; --accent-ink:#8fb0ff; --accent-weak:#182338; --accent-glow:rgba(91,140,255,.20);
    --gold:#f2c811; --gold-weak:#2b2410;
    --ok:#3ec38a; --ok-weak:#12271d; --warn:#e0a032; --danger:#ef6d79; --danger-weak:#2c161a;
    --code-bg:#0a0c10; --code-text:#e4e8f0; --code-border:#20242e;
    --shadow-sm:0 1px 2px rgba(0,0,0,.4);
    --shadow-md:0 10px 28px -10px rgba(0,0,0,.6);
    --shadow-lg:0 34px 80px -28px rgba(0,0,0,.75);
  }
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--bg);scroll-padding-top:76px}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
#netbg{position:fixed;inset:0;width:100%;height:100%;z-index:-1;pointer-events:none;opacity:.9}
body{margin:0;background:transparent;color:var(--text);font-family:var(--font);line-height:1.6;
  font-size:16px;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden}
a{color:inherit;text-decoration:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
h1,h2,h3,h4{margin:0;letter-spacing:-.02em;line-height:1.15}
p{margin:0}
::selection{background:var(--accent);color:#fff}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;
  letter-spacing:.04em;text-transform:uppercase;color:var(--accent)}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--ok)}
code.inline{font-family:var(--mono);font-size:.88em;background:var(--surface-2);
  border:1px solid var(--border);border-radius:6px;padding:1px 6px;overflow-wrap:anywhere}

/* header */
header.site{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--bg) 82%,transparent);
  backdrop-filter:saturate(180%) blur(14px);-webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid transparent;transition:border-color .25s}
header.site.scrolled{border-bottom-color:var(--border)}
.nav{display:flex;align-items:center;gap:20px;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;letter-spacing:-.01em}
.brand img{width:30px;height:30px;display:block;flex:none}
.nav-links{display:flex;gap:20px;margin-left:auto}
.nav-links a{font-size:14.5px;font-weight:500;color:var(--muted);transition:color .18s}
.nav-links a:hover{color:var(--text)}
.nav-links a.active{color:var(--accent);font-weight:700}
.nav .gh{margin-left:16px}
.nav-toggle{display:none;align-items:center;justify-content:center;width:44px;height:44px;flex:none;
  background:var(--surface-2);border:1px solid var(--border);border-radius:10px;color:var(--text);cursor:pointer}
.nav-toggle svg{width:20px;height:20px}
/* màn hẹp: nav thành bảng thả xuống, mở bằng nút menu */
@media (max-width:1080px){
  .nav-toggle{display:inline-flex}
  .nav .gh{margin-left:auto}
  .nav-links{display:none;position:absolute;top:100%;left:0;right:0;margin:0;flex-direction:column;gap:0;
    background:var(--surface);border-bottom:1px solid var(--border);box-shadow:var(--shadow-md);padding:8px 22px 14px}
  .nav-links.open{display:flex}
  .nav-links a{padding:12px 0;font-size:15.5px;border-bottom:1px solid var(--border)}
  .nav-links a:last-child{border-bottom:0}
}
@media (max-width:480px){.brand{font-size:15.5px;gap:8px}.nav{gap:10px}.nav .gh{padding:0;width:44px;height:44px;justify-content:center}.nav .gh .gh-t{display:none}}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;white-space:nowrap;font-family:var(--font);
  font-size:15px;font-weight:600;padding:11px 18px;border-radius:11px;border:1px solid transparent;
  cursor:pointer;transition:transform .12s ease,background .18s,border-color .18s,box-shadow .18s}
.btn svg{width:18px;height:18px;flex:none}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 6px 18px -6px var(--accent-glow)}
.btn-primary:hover{background:var(--accent-ink);box-shadow:0 10px 24px -8px var(--accent-glow)}
.btn-ghost{background:var(--surface-2);color:var(--text);border-color:var(--border)}
.btn-ghost:hover{background:var(--surface-3);border-color:var(--border-strong)}
.btn-sm{padding:8px 14px;font-size:14px;border-radius:9px}
/* AA: chữ trắng trên accent tối-mode (#5b8cff) chỉ đạt 3.16:1 → nền nút đậm hơn */
@media (prefers-color-scheme:dark){.btn-primary{background:#2361e6}.btn-primary:hover{background:#1b4fd0}}
/* AA 1.4.1: link nằm trong đoạn văn không được chỉ phân biệt bằng màu */
main p a:not(.btn),main li a:not(.btn){text-decoration:underline;text-underline-offset:3px;color:var(--accent)}

/* hero */
.hero{position:relative;padding:72px 0 40px;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;
  background:radial-gradient(120% 90% at 82% -10%,var(--accent-glow),transparent 55%),
    radial-gradient(90% 70% at 8% 0%,color-mix(in srgb,var(--gold) 10%,transparent),transparent 50%)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center}
.hero-grid > *{min-width:0}
@media (max-width:900px){.hero-grid{grid-template-columns:1fr;gap:34px}}
.hero-badge{display:inline-flex;align-items:center;gap:9px;padding:6px 12px 6px 8px;border-radius:999px;
  background:var(--surface-2);border:1px solid var(--border);font-size:13px;font-weight:600;color:var(--muted);margin-bottom:22px}
.hero-badge b{color:var(--text);white-space:nowrap}
.hero-badge .tick{display:inline-flex;flex:none;width:20px;height:20px;border-radius:50%;background:var(--ok-weak);
  color:var(--ok);align-items:center;justify-content:center}
.hero-badge .tick svg{width:12px;height:12px}
.hero h1{font-size:clamp(2rem,4.6vw,3.05rem);font-weight:800}
.hero h1 .hl{color:var(--accent)}
.hero .lead{margin-top:20px;font-size:clamp(1.02rem,2.2vw,1.2rem);color:var(--muted);max-width:40ch;line-height:1.55}
.hero .sub{margin-top:14px;font-size:14px;color:var(--muted)}
.hero-cta{display:flex;gap:12px;margin-top:30px;flex-wrap:wrap}
.tech-badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:30px}
.tb{display:inline-flex;align-items:center;gap:7px;font-size:12.5px;font-weight:600;font-family:var(--mono);
  padding:6px 11px;border-radius:8px;background:var(--surface-2);border:1px solid var(--border);color:var(--muted)}
.tb .g{width:7px;height:7px;border-radius:2px;background:var(--accent);flex:none}
.tb.local .g{background:var(--ok)}
.tb.gold .g{background:var(--gold)}

/* số liệu */
.stats{display:grid;grid-template-columns:repeat(8,1fr);gap:12px;margin-top:48px}
.stat{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);padding:14px 12px;
  box-shadow:var(--shadow-sm);text-align:center}
.stat b{display:block;font-size:1.7rem;font-weight:800;letter-spacing:-.02em;color:var(--accent);line-height:1.1}
.stat span{display:block;margin-top:4px;font-size:12.5px;color:var(--muted);line-height:1.35}
@media (max-width:900px){.stats{grid-template-columns:repeat(4,1fr)}}
@media (max-width:420px){.stats{grid-template-columns:repeat(2,1fr)}}

/* sections */
section{padding:72px 0}
.sec-head{max-width:700px;margin-bottom:40px}
.sec-head h2{font-size:clamp(1.7rem,3.6vw,2.4rem);font-weight:800;margin-top:14px}
.sec-head p{margin-top:14px;color:var(--muted);font-size:1.05rem;line-height:1.6}
.sub-head{margin:52px 0 20px;max-width:700px}
.sub-head h3{font-size:1.3rem;font-weight:800}
.sub-head p{margin-top:8px;color:var(--muted);font-size:15px;line-height:1.6}

/* bento + thẻ tính năng */
.bento{display:grid;grid-template-columns:repeat(6,1fr);gap:16px}
.feat{grid-column:span 2;min-width:0;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow-sm);transition:transform .2s ease,box-shadow .2s ease,border-color .2s}
.feat:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--border-strong)}
.feat.wide{grid-column:span 3}
.feat.span-all{grid-column:span 6}
.ficon{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:var(--accent-weak);color:var(--accent);margin-bottom:16px}
.ficon.gold{background:var(--gold-weak);color:var(--gold)}
.ficon.ok{background:var(--ok-weak);color:var(--ok)}
.ficon svg{width:23px;height:23px}
.feat h3{font-size:1.12rem;font-weight:700}
.feat p{margin-top:9px;color:var(--muted);font-size:14.5px;line-height:1.55}
.feat ul{margin:12px 0 0;padding:0;display:flex;flex-direction:column;gap:8px}
.feat li{list-style:none;position:relative;padding-left:18px;font-size:14px;color:var(--muted);line-height:1.5}
.feat li::before{content:"";position:absolute;left:2px;top:8px;width:6px;height:6px;border-radius:2px;background:var(--accent)}
.feat li b{color:var(--text)}
.feat .kbd{display:inline-block;margin-top:14px;font-family:var(--mono);font-size:12px;color:var(--muted);
  background:var(--surface-2);border:1px solid var(--border);border-radius:6px;padding:3px 8px;overflow-wrap:anywhere}
.chips{display:flex;flex-wrap:wrap;gap:7px;margin-top:12px}
.chip{font-size:12.5px;font-weight:600;padding:5px 10px;border-radius:8px;background:var(--surface-2);
  border:1px solid var(--border);color:var(--muted)}
.chip b{color:var(--accent);font-weight:800;margin-right:3px}
@media (max-width:900px){
  .bento{grid-template-columns:repeat(2,1fr)}
  .feat,.feat.wide{grid-column:span 1}
  .feat.span-all{grid-column:span 2}
}
@media (max-width:640px){
  .bento{grid-template-columns:1fr}
  .feat,.feat.wide,.feat.span-all{grid-column:span 1}
}

/* lớp / danh sách khối */
.layers{display:flex;flex-direction:column;gap:12px}
.layer{display:flex;gap:16px;align-items:flex-start;background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-sm);padding:18px 20px;box-shadow:var(--shadow-sm);min-width:0}
.layer > div{min-width:0}
.layer .lnum{flex:none;font-family:var(--mono);font-size:12px;font-weight:600;color:var(--accent);
  background:var(--accent-weak);border-radius:6px;padding:3px 8px;margin-top:2px;min-width:86px;text-align:center}
.layer h3{font-size:1rem;font-weight:700}
.layer p{margin-top:5px;font-size:14px;color:var(--muted);line-height:1.55}
.layer.dele{border-style:dashed}
.layer.dele .lnum{background:var(--surface-3);color:var(--muted)}
@media (max-width:520px){.layer{flex-direction:column;gap:10px}.layer .lnum{min-width:0}}

/* quy trình sáu bước */
.pipe-wrap{padding-bottom:6px}
.pipe{display:flex;gap:0}
.pstep{flex:1 1 0;min-width:0;position:relative;background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-sm);padding:18px 16px;box-shadow:var(--shadow-sm)}
.pstep.gate{border-color:color-mix(in srgb,var(--gold) 55%,var(--border));background:linear-gradient(180deg,var(--gold-weak),transparent 80%),var(--surface)}
.pstep:not(:last-child){margin-right:24px}
.pstep:not(:last-child)::after{content:"";position:absolute;top:50%;right:-24px;width:24px;height:2px;
  background:linear-gradient(90deg,var(--border-strong),var(--accent))}
.pstep:not(:last-child)::before{content:"";position:absolute;top:50%;right:-7px;width:0;height:0;transform:translateY(-50%);
  border-left:7px solid var(--accent);border-top:5px solid transparent;border-bottom:5px solid transparent;z-index:2}
.pnum{font-family:var(--mono);font-size:12px;font-weight:600;color:var(--accent);
  background:var(--accent-weak);border-radius:6px;padding:2px 7px;display:inline-block}
.pstep.gate .pnum{background:var(--gold-weak);color:var(--gold)}
.pstep h3{margin-top:12px;font-size:.96rem;font-weight:700}
.pstep p{margin-top:6px;font-size:12.5px;color:var(--muted);line-height:1.5}
.pstep .you{margin-top:8px;font-size:12.5px;font-weight:600;color:var(--text)}
@media (max-width:860px){
  .pipe{flex-direction:column}
  .pstep:not(:last-child){margin-right:0;margin-bottom:26px}
  .pstep:not(:last-child)::after{top:auto;bottom:-26px;right:50%;width:2px;height:26px;
    background:linear-gradient(180deg,var(--border-strong),var(--accent))}
  .pstep:not(:last-child)::before{top:auto;bottom:-9px;right:50%;transform:translateX(50%);
    border-left:5px solid transparent;border-right:5px solid transparent;border-top:7px solid var(--accent);border-bottom:0}
}

/* bảng: desktop là bảng, ≤700px xếp thành thẻ (không cuộn ngang, không bóp cột) */
.tbl-wrap{margin-top:8px}
table.tbl{border-collapse:separate;border-spacing:0;width:100%;table-layout:fixed;background:var(--surface);
  border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm)}
table.tbl th,table.tbl td{padding:13px 16px;text-align:left;font-size:14.5px;vertical-align:top;overflow-wrap:break-word}
table.tbl thead th{background:var(--surface-2);font-weight:700;font-size:14.5px;border-bottom:1px solid var(--border)}
table.tbl tbody tr:not(:last-child) td{border-bottom:1px solid var(--border)}
table.tbl td{color:var(--muted)}
table.tbl td.lbl{font-weight:700;color:var(--text)}
table.tbl td b{color:var(--text)}
table.tbl code{font-family:var(--mono);font-size:.95em;color:var(--accent-ink);overflow-wrap:anywhere}
@media (max-width:700px){
  table.tbl{border:0;background:transparent;box-shadow:none;border-radius:0;overflow:visible}
  table.tbl thead{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}
  table.tbl,table.tbl tbody,table.tbl tr,table.tbl td{display:block;width:100%}
  table.tbl tr{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);
    box-shadow:var(--shadow-sm);margin-bottom:12px;padding:6px 0}
  table.tbl tbody tr:not(:last-child) td{border-bottom:0}
  table.tbl td{padding:6px 16px}
  table.tbl td::before{content:attr(data-label);display:block;font-size:11.5px;font-weight:700;letter-spacing:.04em;
    text-transform:uppercase;color:var(--faint);margin-bottom:2px}
  table.tbl td.lbl{font-size:16px}
  table.tbl td.lbl::before{display:none}
}

/* cây thư mục */
.tree{list-style:none;margin:0;padding:8px 0;background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius);box-shadow:var(--shadow-sm)}
.tree li{display:grid;grid-template-columns:minmax(220px,300px) 1fr;gap:16px;padding:9px 20px;align-items:baseline}
.tree li:not(:last-child){border-bottom:1px solid var(--border)}
.tree .nm{font-family:var(--mono);font-size:13.5px;font-weight:600;color:var(--text);overflow-wrap:anywhere}
.tree li.child .nm{padding-left:22px;position:relative}
.tree li.child .nm::before{content:"└";position:absolute;left:4px;color:var(--faint)}
.tree .ds{font-size:14px;color:var(--muted);line-height:1.5}
.tree li.root .nm{color:var(--accent)}
@media (max-width:640px){.tree li{grid-template-columns:1fr;gap:2px;padding:10px 16px}}

/* tra nhanh */
.qgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.q{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);padding:14px 16px;box-shadow:var(--shadow-sm);min-width:0}
.q .want{font-size:14px;font-weight:600;color:var(--text);line-height:1.45}
.q .open{margin-top:6px;font-size:13.5px;color:var(--muted);line-height:1.5}
@media (max-width:900px){.qgrid{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.qgrid{grid-template-columns:1fr}}

/* thẻ lưới đơn giản */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:22px;box-shadow:var(--shadow-sm);min-width:0}
.card h3{font-size:1.05rem;font-weight:700;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.card p{margin-top:8px;color:var(--muted);font-size:14.5px;line-height:1.55}
.tag{font-family:var(--mono);font-size:12px;font-weight:600;color:var(--accent);background:var(--accent-weak);
  border-radius:6px;padding:2px 8px}
@media (max-width:860px){.grid-3{grid-template-columns:1fr}}

/* cài đặt */
.install{background:var(--bg-tint);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.install-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start}
.install-grid > *{min-width:0}
.install-copy h2{font-size:clamp(1.7rem,3.6vw,2.3rem);font-weight:800;margin-top:14px}
.install-copy > p{margin-top:14px;color:var(--muted);line-height:1.6}
.install-copy h3{margin-top:28px;font-size:1.1rem;font-weight:700}
.install-copy h3 + p{margin-top:8px;color:var(--muted);line-height:1.6;font-size:15px}
.req{margin-top:22px}
.req ul{margin:0;padding:0;display:flex;flex-direction:column;gap:11px}
.req li{display:flex;gap:11px;align-items:flex-start;list-style:none;font-size:14.5px;color:var(--muted)}
.req .ic{flex:none;width:22px;height:22px;border-radius:6px;background:var(--accent-weak);color:var(--accent);
  display:flex;align-items:center;justify-content:center;margin-top:1px;font-size:12px;font-weight:700}
.req b{color:var(--text)}
@media (max-width:860px){.install-grid{grid-template-columns:1fr;gap:30px}}
.code-card{background:var(--code-bg);border:1px solid var(--code-border);border-radius:var(--radius);
  box-shadow:var(--shadow-lg);overflow:hidden}
.code-card + .code-card{margin-top:18px}
.code-top{display:flex;align-items:center;gap:8px;padding:11px 15px;border-bottom:1px solid var(--code-border)}
.code-top .fn{font-family:var(--mono);font-size:12.5px;color:#9aa3b2;margin-left:2px}
.copy-btn{margin-left:auto;display:inline-flex;align-items:center;gap:6px;cursor:pointer;
  font-family:var(--font);font-size:12.5px;font-weight:600;color:#cdd4e0;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
  padding:5px 11px;border-radius:8px;transition:background .15s,color .15s}
.copy-btn:hover{background:rgba(255,255,255,.12);color:#fff}
.copy-btn svg{width:14px;height:14px}
.copy-btn.done{color:#3ec38a;border-color:rgba(62,195,138,.4)}
.code-scroll{overflow-x:auto}
pre{margin:0;padding:16px 18px 18px}
/* Khối code luôn xuống dòng, không bắt cuộn ngang (chỉ đổi hiển thị, nội dung sao chép giữ nguyên) */
pre code{font-family:var(--mono);font-size:13px;line-height:1.85;color:var(--code-text);white-space:pre-wrap;overflow-wrap:anywhere;display:block}
.code-scroll .cm{color:#8590a3}
.code-scroll .pr{color:#7fa5ff}

.note{display:flex;gap:14px;align-items:flex-start;background:var(--surface-2);border:1px solid var(--border);
  border-left:3px solid var(--warn);border-radius:var(--radius-sm);padding:16px 18px;margin-top:22px}
.note svg{flex:none;width:20px;height:20px;color:var(--warn);margin-top:2px}
.note p{font-size:14.5px;color:var(--muted);line-height:1.6}
.note b{color:var(--text)}
.note.info{border-left-color:var(--accent)}
.note.info svg{color:var(--accent)}

/* giới hạn */
.sw{background:var(--surface);border:1px solid color-mix(in srgb,var(--warn) 30%,var(--border));border-radius:var(--radius);padding:26px;box-shadow:var(--shadow-sm)}
.sw h3{display:flex;align-items:center;gap:10px;font-size:1.15rem;font-weight:800}
.sw h3 .sic{width:30px;height:30px;border-radius:9px;display:inline-flex;align-items:center;justify-content:center;
  background:color-mix(in srgb,var(--warn) 16%,transparent);color:var(--warn)}
.sw ul{margin:18px 0 0;padding:0;columns:2;column-gap:36px}
.sw li{list-style:none;font-size:14.5px;line-height:1.55;color:var(--muted);padding-left:20px;position:relative;
  break-inside:avoid;margin-bottom:14px}
.sw li::before{content:"";position:absolute;left:2px;top:9px;width:7px;height:7px;border-radius:2px;background:var(--warn)}
.sw li b{color:var(--text)}
@media (max-width:840px){.sw ul{columns:1}}

/* FAQ */
.faq{display:flex;flex-direction:column;gap:10px;max-width:860px}
.faq details{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);box-shadow:var(--shadow-sm)}
.faq summary{cursor:pointer;list-style:none;padding:16px 20px;font-weight:700;font-size:15.5px;display:flex;gap:12px;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";margin-left:auto;flex:none;font-family:var(--mono);font-size:18px;color:var(--accent);transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{padding:0 20px 18px;color:var(--muted);font-size:14.5px;line-height:1.6}

/* kết */
.final{text-align:center;padding:80px 0}
.final h2{font-size:clamp(1.8rem,4vw,2.6rem);font-weight:800}
.final p{margin:16px auto 0;max-width:52ch;color:var(--muted);font-size:1.06rem}
.final .hero-cta{justify-content:center;margin-top:32px}

/* footer */
footer.site{border-top:1px solid var(--border);background:var(--bg-tint);padding:44px 0 40px}
.foot{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap;align-items:flex-start}
.foot .brand{margin-bottom:10px}
.foot-tag{color:var(--muted);font-size:14px;max-width:38ch;line-height:1.55}
.foot-links{display:flex;gap:40px;flex-wrap:wrap}
.foot-col b{display:block;font-size:12.5px;text-transform:uppercase;letter-spacing:.05em;color:var(--faint);margin-bottom:12px}
.foot-col a{display:block;font-size:14.5px;color:var(--muted);margin-bottom:9px;transition:color .15s}
.foot-col a:hover{color:var(--accent)}
.foot-bottom{margin-top:36px;padding-top:22px;border-top:1px solid var(--border);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;color:var(--faint);font-size:13px}
.foot-bottom .lic{font-family:var(--mono)}

/* reveal */
@media (prefers-reduced-motion:no-preference){
  .reveal{opacity:0;transform:translateY(20px);transition:opacity .6s cubic-bezier(.16,1,.3,1),transform .6s cubic-bezier(.16,1,.3,1)}
  .reveal.in{opacity:1;transform:none}
}

/* ===== nhiều trang ===== */
/* hero trang con */
.page-hero{position:relative;padding:60px 0 28px;overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;
  background:radial-gradient(120% 90% at 82% -10%,var(--accent-glow),transparent 55%),
    radial-gradient(90% 70% at 8% 0%,color-mix(in srgb,var(--gold) 10%,transparent),transparent 50%)}
.page-hero h1{font-size:clamp(1.9rem,4.4vw,2.8rem);font-weight:800;margin-top:14px}
.page-hero .lead{margin-top:16px;font-size:clamp(1rem,2vw,1.15rem);color:var(--muted);max-width:62ch;line-height:1.6}
.crumb{font-size:13.5px;color:var(--faint)}
.crumb a{color:var(--accent)}
.page-hero + section{padding-top:28px}

/* lợi ích ngắn trong hero trang chủ */
.benefits{list-style:none;margin:0;padding:22px;display:flex;flex-direction:column;gap:14px;background:var(--surface);
  border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-lg)}
.benefits li{display:flex;gap:12px;align-items:flex-start;font-size:15.5px;line-height:1.5;color:var(--muted)}
.benefits li b{color:var(--text)}
.benefits .bi{flex:none;width:28px;height:28px;border-radius:8px;display:flex;align-items:center;justify-content:center;
  background:var(--accent-weak);color:var(--accent)}
.benefits .bi.gold{background:var(--gold-weak);color:var(--gold)}
.benefits .bi.ok{background:var(--ok-weak);color:var(--ok)}
.benefits .bi svg{width:16px;height:16px}

/* infographic */
.figure{margin:0;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow-md);padding:14px;overflow:hidden}
.figure img{display:block;width:100%;height:auto;aspect-ratio:1672/941;border-radius:var(--radius-sm);background:var(--surface-2)}
.fig-tools{display:flex;align-items:center;justify-content:flex-end;gap:12px;flex-wrap:wrap;margin-top:10px;padding:0 4px}
.fig-hint{display:none;font-size:13px;color:var(--faint);margin-right:auto}
.fig-open{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--accent);min-height:44px}
.fig-open:hover{color:var(--accent-ink);text-decoration:underline}
.fig-open svg{width:16px;height:16px;flex:none}
/* điện thoại: giữ chữ infographic đọc được, cuộn ngang trong khung thay vì co ảnh */
@media (max-width:700px){
  .fig-scroll{overflow-x:auto;overscroll-behavior-x:contain;-webkit-overflow-scrolling:touch;border-radius:var(--radius-sm)}
  .fig-scroll img{width:900px;min-width:900px;max-width:none}
  .fig-hint{display:inline}
}
.figure figcaption{margin-top:12px;font-size:14px;color:var(--muted);line-height:1.55;padding:0 4px}
.figure figcaption b{color:var(--text)}

/* sơ đồ khối cấu trúc repo */
.blocks{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.block{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow-sm);min-width:0}
.block h3{font-size:.82rem;font-weight:700;letter-spacing:.05em;text-transform:uppercase;color:var(--accent);
  display:flex;align-items:center;gap:8px}
.block h3::before{content:"";width:8px;height:8px;border-radius:2px;background:currentColor}
.block.gold h3{color:var(--gold)}
.block.ok h3{color:var(--ok)}
.block ul{list-style:none;margin:14px 0 0;padding:0;display:flex;flex-direction:column;gap:9px}
.block li{display:flex;flex-direction:column;gap:1px;padding:9px 12px;border-radius:9px;background:var(--surface-2);border:1px solid var(--border)}
.block li code{font-family:var(--mono);font-size:13px;font-weight:600;color:var(--text);overflow-wrap:anywhere}
.block li span{font-size:13.5px;color:var(--muted);line-height:1.45}
@media (max-width:900px){.blocks{grid-template-columns:1fr}}

/* thẻ dẫn sang trang con */
.links{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.lcard{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:22px;box-shadow:var(--shadow-sm);transition:transform .2s ease,box-shadow .2s ease,border-color .2s;min-width:0}
.lcard:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--accent)}
.lcard h3{font-size:1.08rem;font-weight:700}
.lcard p{margin-top:8px;font-size:14.5px;color:var(--muted);line-height:1.55;flex:1}
.lcard .go{margin-top:14px;font-size:13.5px;font-weight:700;color:var(--accent)}
@media (max-width:900px){.links{grid-template-columns:1fr 1fr}}
@media (max-width:600px){.links{grid-template-columns:1fr}}

/* chuyển trang trước / sau */
.pager{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;margin-top:8px}
.pager a{flex:1 1 240px;display:flex;flex-direction:column;gap:2px;padding:16px 18px;border-radius:var(--radius-sm);
  background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow-sm);transition:border-color .18s}
.pager a:hover{border-color:var(--accent)}
.pager a span{font-size:12.5px;color:var(--faint);font-weight:600}
.pager a b{font-size:15.5px;color:var(--text)}
.pager a.next{text-align:right}
.pager-sec{padding:24px 0 64px}
.qgrid.q4{grid-template-columns:repeat(4,1fr)}
@media (max-width:900px){.qgrid.q4{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.qgrid.q4{grid-template-columns:1fr}}