/* Giao dien PckBot: ky luat, tinh gon. Nen navy trung tinh, VANG chi cho hanh dong chinh va con so chot, khong quang sang /
   nhap nhay. Mau gia theo quy uoc bang dien san: xanh la tang, do giam, vang tham chieu, tim tran, xanh lam san.
   Chu: Be Vietnam Pro (chu thuong), JetBrains Mono (so, ma, gio) - tu host o /static/fonts. Mot giao dien toi duy nhat. */
:root {
  color-scheme: dark;
  --bg: #0a111e; --card: #0f1828; --card-2: #131e31; --line: #1f2b40; --line-2: #2a3851;
  --ink: #e6ebf3; --muted: #8b98ae; --faint: #66748b;
  --brand: #f4b80c; --brand-hover: #ffc832; --brand-ink: #0a111e; --brand-soft: rgba(244, 184, 12, .10);
  --accent: #5fb7dd;
  --up: #2bd07a; --down: #ff5c5c; --ref: #f2c94c; --ceil: #c77dff; --floor: #3cc8ec;
  --bad: #ff8a80; --bad-bg: #3a1a18; --ok: #34d399; --ok-bg: #0f2f26;
  --font: "Be Vietnam Pro", "Segoe UI", system-ui, -apple-system, Roboto, Arial, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;
  --r: 6px; --r-card: 8px;
}
* { box-sizing: border-box; }
body { margin: 0; overflow-x: clip; background: var(--bg); color: var(--ink); font: 15px/1.6 var(--font); }
a { color: var(--brand); text-underline-offset: 2px; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 16px; }
h1, h2, h3 { text-wrap: balance; font-weight: 600; letter-spacing: -.015em; }
h1 { font-size: 28px; line-height: 1.2; margin: 0 0 12px; font-weight: 700; letter-spacing: -.025em; }
h2 { font-size: 19px; line-height: 1.3; margin: 0 0 8px; }
h3 { font-size: 16px; margin: 0 0 6px; }
code, kbd, pre, .mono { font-family: var(--mono); }
.lead { font-size: 16.5px; color: var(--muted); max-width: 70ch; }
.muted { color: var(--muted); }
input:focus-visible, select:focus-visible, textarea:focus-visible, button:focus-visible, a:focus-visible, summary:focus-visible {
  outline: 2px solid var(--brand); outline-offset: 2px; }

/* ---- thanh menu ---- */
.top { position: sticky; top: 0; z-index: 10; background: rgba(10, 17, 30, .92); backdrop-filter: blur(6px);
       border-bottom: 1px solid var(--line); }
.bar { display: flex; align-items: center; justify-content: space-between; gap: 12px 20px; padding-top: 12px; padding-bottom: 12px; flex-wrap: wrap; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 17px; text-decoration: none;
         color: var(--ink); letter-spacing: -.01em; }
.brand b { color: var(--brand); }
.logo { display: block; flex: none; }
.logo-hex { fill: none; stroke: var(--brand); stroke-width: 2; stroke-linejoin: round; }
.logo-line { fill: none; stroke: var(--ink); stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; }
nav { display: flex; align-items: center; gap: 6px 20px; flex-wrap: wrap; font-size: 14px; }
nav a { text-decoration: none; }
nav a:not(.btn) { color: var(--muted); padding: 4px 0; border-bottom: 2px solid transparent; transition: color .15s, border-color .15s; }
nav a:not(.btn):hover, nav a:not(.btn):focus-visible { color: var(--ink); }
nav a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--brand); }
nav button.link { font-size: 14px; color: var(--muted); }
nav button.link:hover { color: var(--ink); }
main.wrap { padding-top: 32px; padding-bottom: 48px; }        /* main.wrap: .wrap (padding 0 16px) khong de mat khoang tren */

/* ---- the, luoi ---- */
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--r-card); padding: 18px; margin: 0 0 16px; }
.grid3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; margin: 16px 0; }
.grid2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 16px; margin-bottom: 16px; }
.grid3 .card, .grid2 .card { margin: 0; }

/* ---- bang gia ---- */
.plan { transition: border-color .15s; }
.plan:hover, .plan:focus-within { border-color: var(--line-2); }
.plan.popular { border-color: rgba(244, 184, 12, .55); }
.badge { display: inline-block; margin-left: 8px; vertical-align: middle; font: 600 11px/1 var(--mono); letter-spacing: .05em;
         text-transform: uppercase; color: var(--brand-ink); background: var(--brand); border-radius: 4px; padding: 4px 6px; }
.price { font: 600 30px/1.2 var(--mono); letter-spacing: -.02em; margin: 4px 0; color: var(--ink); font-variant-numeric: tabular-nums; }
.price span { font: 400 14px var(--font); letter-spacing: 0; color: var(--muted); }
.feat { padding-left: 18px; margin: 8px 0 0; color: var(--muted); font-size: 14px; }
.feat.groups { list-style: none; padding: 0; margin: 12px 0 16px; display: grid; gap: 12px; }
.fgroup { display: grid; gap: 6px; }
.fhead { color: var(--ink); font-weight: 600; font-size: 14px; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { display: inline-block; padding: 3px 8px; border: 1px solid var(--line); border-radius: 4px; background: var(--bg);
        color: var(--muted); font-size: 13px; line-height: 1.4; }
.incl { margin: 10px 0 0; padding-top: 10px; border-top: 1px solid var(--line); color: var(--faint); font: 500 12px/1.4 var(--mono);
        text-transform: uppercase; letter-spacing: .05em; }

/* ---- nut, form ---- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; background: var(--brand); color: var(--brand-ink);
       border: 1px solid var(--brand); border-radius: var(--r); padding: 10px 16px; font: 600 14px/1.2 var(--font); text-decoration: none;
       cursor: pointer; transition: background .15s, border-color .15s, color .15s; }
.btn:hover { background: var(--brand-hover); border-color: var(--brand-hover); }
.btn.small { padding: 7px 12px; font-size: 13.5px; }
.btn.ghost { background: transparent; color: var(--ink); border-color: var(--line-2); }
.btn.ghost:hover { border-color: var(--muted); background: transparent; }
.btn[disabled] { opacity: .5; cursor: not-allowed; }
nav .btn.cta { color: var(--brand-ink); }
button.link { background: none; border: 0; padding: 0; color: var(--brand); font: inherit; cursor: pointer; }
form.inline { display: inline; }
.narrow { max-width: 440px; margin: 0 auto; }
.stack { display: grid; gap: 14px; }
label { font-weight: 600; }
.stack label { display: grid; gap: 6px; }
input[type=text], input[type=email], input[type=password], input[type=number], input[type=date], select, textarea {
  width: 100%; padding: 9px 10px; font: inherit; color: var(--ink); background: var(--bg); border: 1px solid var(--line-2); border-radius: var(--r); }
input:focus, select:focus, textarea:focus { border-color: var(--brand); }
.check { display: flex; gap: 10px; align-items: flex-start; font-weight: 400; }
.check input { margin-top: 5px; }
.error { color: var(--bad); background: var(--bad-bg); padding: 8px 12px; border-radius: var(--r); }
small.error { display: block; margin-top: 4px; }
.ok { color: var(--ok); background: var(--ok-bg); padding: 8px 12px; border-radius: var(--r); }
.note { color: var(--muted); }
.notice { border-left: 2px solid var(--brand); background: var(--brand-soft); color: var(--ink); padding: .7rem 1rem; border-radius: 0 var(--r) var(--r) 0; max-width: 70ch; }
.code { display: inline-block; padding: 8px 12px; background: var(--bg); border: 1px solid var(--line-2); border-radius: var(--r);
        font: 15px var(--mono); overflow-wrap: anywhere; }
.cta-row { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }

/* ---- bang ---- */
table { width: 100%; border-collapse: collapse; font-size: 14.5px; }
th, td { text-align: left; padding: 7px 8px; border-bottom: 1px solid var(--line); overflow-wrap: anywhere; }
th { color: var(--faint); font: 500 11.5px/1.3 var(--mono); letter-spacing: .05em; text-transform: uppercase; }
.num { text-align: right; font-family: var(--mono); font-size: .95em; font-variant-numeric: tabular-nums; }
th.num { font-size: 11.5px; }
section.card { overflow-x: auto; }
.up { color: var(--up); } .down { color: var(--down); } .ref { color: var(--ref); } .ceil { color: var(--ceil); } .floor { color: var(--floor); }

/* ---- cai dat ---- */
.presets .preset { display: flex; gap: 12px; align-items: center; margin: 8px 0; }
.suggest ul { margin: 6px 0 12px; padding-left: 20px; }
.suggest table { margin: 8px 0 12px; }
.suggest td.diff { font-weight: 700; }
.suggest form { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin: 10px 0; }
.suggest .agree { display: flex; gap: 8px; align-items: center; }
.presets .agree { display: flex; gap: 8px; align-items: center; }
.presets .agree input { width: 20px; height: 20px; }
.suggest .agree input { width: 20px; height: 20px; }
.suggest .msg { white-space: normal; }
.snaps table { margin: 8px 0 12px; }
.snaps td.diff { font-weight: 700; }
.snaps form { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin: 10px 0; }
.snaps .agree { display: flex; gap: 8px; align-items: center; }
.snaps .agree input { width: 20px; height: 20px; }
.snaps ul { margin: 6px 0 12px; padding-left: 20px; }
details.group > summary { cursor: pointer; display: flex; align-items: baseline; justify-content: space-between; gap: 12px; list-style: none; }
details.group > summary::-webkit-details-marker { display: none; }
details.group > summary h2 { margin: 0; }
details.group > summary h2::before { content: "▸ "; color: var(--faint); }
details.group[open] > summary h2::before { content: "▾ "; }
details.group form { margin-top: 12px; }
.row { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 12px; padding: 10px 0; border-top: 1px solid var(--line); }
.row label { font-weight: 500; }
.row .field small { display: block; margin-top: 4px; font-size: 13px; overflow-wrap: anywhere; }
.row.bad { background: var(--bad-bg); margin: 0 -8px; padding-left: 8px; padding-right: 8px; border-radius: var(--r); }
.row.locked label, .row.locked .field { opacity: .6; }
.row input[type=checkbox] { width: 20px; height: 20px; }
/* nut "?" giai thich cai dat: chi CSS (CSP cam JS); hover hoac cham/tab (focus) de mo, khung neo theo cot nhan nen khong tran man hinh */
.lab { position: relative; }
.tip { display: inline-flex; align-items: center; justify-content: center; width: 20px; height: 20px; margin-left: 6px;
       vertical-align: middle; border: 1px solid var(--line-2); border-radius: 50%; color: var(--muted); font: 600 12px/1 var(--mono);
       cursor: help; user-select: none; }
.tip:hover, .tip:focus { border-color: var(--brand); color: var(--brand); }
.tip:focus { outline: 2px solid var(--brand); outline-offset: 2px; }
.tip-body { display: none; position: absolute; left: 0; right: 0; top: calc(100% + 6px); z-index: 20; max-width: 36em;
            padding: 10px 12px; background: var(--card-2); color: var(--ink); border: 1px solid var(--line-2); border-radius: var(--r-card);
            box-shadow: 0 12px 32px rgba(0, 0, 0, .5); font-size: 14px; font-weight: 400; line-height: 1.5; overflow-wrap: anywhere; }
/* cau trong suot phu khoang ho 6px de re chuot tu "?" xuong khung ma khung khong dong */
.tip-body::before { content: ""; position: absolute; left: 0; right: 0; top: -8px; height: 8px; }
.tip:hover + .tip-body, .tip:focus + .tip-body, .tip-body:hover { display: block; }
.tag { display: inline-block; font: 500 11.5px/1.5 var(--mono); padding: 0 6px; border: 1px solid var(--line-2); border-radius: 4px;
       margin-left: 6px; color: var(--muted); }
.foot { color: var(--faint); font-size: 12.5px; padding-top: 24px; padding-bottom: 40px; border-top: 1px solid var(--line); }
.foot p { max-width: 110ch; }
.foot a { color: var(--muted); }

/* ---- trang huong dan lenh ---- */
.guide-videos .videos { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; }
.guide-videos figure { margin: 0; }
.guide-videos video { display: block; width: 100%; aspect-ratio: 9 / 16; max-height: 72vh; background: #000; border-radius: 10px; }
.guide-videos figcaption { margin-top: 8px; }
.guide table { table-layout: fixed; }
.guide th:first-child { width: 36%; }
.guide th:last-child { width: 24%; }
.guide td { vertical-align: top; }
.guide code, .feature-text code { background: var(--bg); border: 1px solid var(--line-2); border-radius: 4px; padding: 1px 6px; font-size: .88em; }
.guide tr.locked td { opacity: .7; }
.where { display: inline-block; font: 500 11.5px/1.5 var(--mono); padding: 0 6px; margin: 2px 4px 2px 0; border-radius: 4px;
         color: var(--accent); border: 1px solid rgba(95, 183, 221, .5); white-space: nowrap; }
.lock { display: inline-block; font: 600 11.5px/1.5 var(--mono); padding: 0 6px; border-radius: 4px; white-space: nowrap;
        color: var(--brand); background: var(--brand-soft); }

/* ---- cam nang nguoi moi (/tai-lieu, docs.<ten-mien>) ---- */
.docs { display: grid; grid-template-columns: minmax(0, 1fr) 240px; gap: 0 24px; align-items: start; }
.docs > * { grid-column: 1; }
.docs > .toc { grid-column: 2; grid-row: 1 / span 20; position: sticky; top: 80px; }
.toc { border: 1px solid var(--line); border-radius: var(--r-card); padding: 14px 16px; margin: 0 0 16px; font-size: 14px; }
.toc-title { margin: 0 0 6px; color: var(--faint); font: 500 12px/1.4 var(--mono); text-transform: uppercase; letter-spacing: .05em; }
.toc ol { margin: 0; padding-left: 20px; }
.toc li { margin: 3px 0; }
.toc a { color: var(--muted); text-decoration: none; }
.toc a:hover { color: var(--ink); }
.doc { scroll-margin-top: 80px; }
.doc p, .doc li, .doc dd { max-width: 75ch; }
.terms { margin: 8px 0 0; }
.terms dt { font-weight: 600; color: var(--ink); margin-top: 14px; }
.terms dt:first-child { margin-top: 0; }
.terms dd { margin: 2px 0 0; color: var(--muted); }
.doc code { background: var(--bg); border: 1px solid var(--line-2); border-radius: 4px; padding: 1px 6px; font-size: .88em; }
.doc details { border-top: 1px solid var(--line); padding: 10px 0; }
.doc details:first-of-type { border-top: 0; }
.doc summary { cursor: pointer; font-weight: 600; }
.doc details p { color: var(--muted); margin: 6px 0 0; }
.doc .grid3 h3 { color: var(--brand); }
.doc .grid3 ul { padding-left: 18px; margin: 0; color: var(--muted); }
.doc.guide h3 { margin-top: 18px; }
.docs-link { margin-bottom: 12px; }
/* hinh minh hoa (SVG sinh boi web/docs_figs.py, HTML trong docs.html): mau lay tu bien cua website */
.ill { margin: 12px 0 4px; padding: 14px; background: var(--bg); border: 1px solid var(--line); border-radius: var(--r-card); max-width: 640px; }
.ill svg { display: block; width: 100%; height: auto; overflow: visible; }
.ill svg.fit { max-width: 480px; }
.ill figcaption, .shot-fig figcaption { margin-top: 8px; color: var(--faint); font-size: 12.5px; }
.ill text { font: 12.5px var(--font); }
.ill .tx { fill: var(--muted); } .ill .tx-ink { fill: var(--ink); font-weight: 600; } .ill .tx-faint { fill: var(--faint); }
.ill .tx-up { fill: var(--up); } .ill .tx-down { fill: var(--down); } .ill .tx-ref { fill: var(--ref); }
.ill .tx-ceil { fill: var(--ceil); } .ill .tx-floor { fill: var(--floor); } .ill .tx-a { fill: var(--brand); } .ill .tx-b { fill: var(--accent); }
.ill .ax { stroke: var(--line-2); stroke-width: 1; } .ill .ax-strong { stroke: var(--line-2); stroke-width: 3; }
.ill .lead { stroke: var(--faint); stroke-width: 1; stroke-dasharray: 2 3; } .ill .tick { stroke: var(--muted); stroke-width: 1.5; }
.ill .wick { stroke-width: 2; } .ill .wick.up { stroke: var(--up); } .ill .wick.down { stroke: var(--down); }
.ill .body.up { fill: var(--up); } .ill .body.down { fill: var(--down); }
.ill .panel { fill: var(--card); stroke: var(--line); rx: 6px; }
.ill .up-l, .ill .down-l, .ill .ref-l, .ill .price-l, .ill .ma-a, .ill .ma-b { fill: none; stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
.ill .up-l { stroke: var(--up); } .ill .down-l { stroke: var(--down); } .ill .ref-l { stroke: var(--ref); }
.ill .price-l { stroke: var(--ink); stroke-width: 1.6; } .ill .ma-a { stroke: var(--brand); } .ill .ma-b { stroke: var(--accent); }
.ill .dot-hi { fill: var(--brand); } .ill .dot-lo { fill: var(--accent); } .ill .dot-ink { fill: var(--ink); } .ill .dot-brand { fill: var(--brand); }
.ill .vol { fill: var(--line-2); } .ill .vol-hi { fill: var(--brand); }
.ill .avg { stroke: var(--brand); stroke-width: 1.5; stroke-dasharray: 5 4; }
.ill .zone { fill: var(--brand-soft); stroke: none; }
.ill .res { stroke: var(--down); stroke-width: 1.5; stroke-dasharray: 5 4; } .ill .sup { stroke: var(--up); stroke-width: 1.5; stroke-dasharray: 5 4; }
.ill .arr { stroke: var(--ink); stroke-width: 1.5; } .ill .ah { fill: var(--ink); }
.ill .band-up { fill: rgba(43, 208, 122, .22); } .ill .band-down { fill: rgba(255, 92, 92, .22); }
/* bang gia mau */
.ill table.board { font: 13px/1.4 var(--mono); font-variant-numeric: tabular-nums; }
.ill .board th, .ill .board td { text-align: right; padding: 6px 8px; }
.ill .board th:first-child, .ill .board td:first-child { text-align: left; }
.ill .board th, .ill .board td { white-space: nowrap; }
.ill { overflow-x: auto; }                   /* man hinh hep: hinh giu co chu doc duoc, vuot ngang trong khung */
@media (max-width: 560px) {
  .ill svg:not(.fit) { min-width: 440px; }
  .ill .board th, .ill .board td { padding: 6px 5px; }
  .ill { padding: 10px; }
}
/* so do luong viec, phep tinh, che do */
.flow { display: flex; flex-wrap: wrap; align-items: stretch; gap: 8px; list-style: none; margin: 0; padding: 0; }
.flow li { flex: 1 1 120px; background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 10px 12px; font-size: 13.5px; color: var(--muted); position: relative; }
.flow li b { display: block; color: var(--ink); font-size: 14px; }
.flow li.you { border-color: rgba(244, 184, 12, .55); }
.flow li:not(:last-child)::after { content: "→"; position: absolute; right: -8px; top: 50%; transform: translate(50%, -50%); color: var(--brand); font-weight: 700; }
.risk-calc { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 8px 16px; align-items: baseline; font-size: 14px; }
.risk-calc span { color: var(--muted); } .risk-calc b { font: 500 14px var(--mono); color: var(--ink); }
.risk-calc .res-row { color: var(--brand); }
@media (max-width: 560px) { .risk-calc { grid-template-columns: minmax(0, 1fr); gap: 2px; } .risk-calc b { margin-bottom: 8px; } }
.modes { display: grid; grid-template-columns: 1fr auto 1fr; gap: 10px; align-items: stretch; }
.modes .sw { align-self: center; }
.modes .m { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 12px; font-size: 13.5px; color: var(--muted); }
.modes .m b { display: block; font-size: 14px; }
.modes .m.ok b { color: var(--up); } .modes .m.def b { color: var(--ref); }
.modes .sw { color: var(--brand); font: 600 18px var(--mono); text-align: center; }
.split { display: flex; height: 34px; border-radius: var(--r); overflow: hidden; gap: 2px; }
.split span { flex: 1; display: flex; align-items: center; justify-content: center; font: 500 11px var(--mono); color: var(--brand-ink); }
.split .s1 { background: var(--brand); } .split .s2 { background: var(--accent); } .split .s3 { background: var(--up); }
.split .s4 { background: var(--ceil); } .split .s5 { background: var(--ref); }
.shot-fig { margin: 12px 0 4px; max-width: 640px; }
.msg-demo { margin: 12px 0 4px; max-width: 680px; }
.msg-demo .msg { margin: 0; }
.msg-demo .msg-buttons .btn { cursor: default; }
.msg-demo figcaption { margin-top: 8px; color: var(--faint); font-size: 12.5px; }
.shot-fig img { display: block; width: 100%; height: auto; border: 1px solid var(--line); border-radius: var(--r-card); }
@media (max-width: 560px) {
  .flow li:not(:last-child)::after { content: none; }
  .modes { grid-template-columns: 1fr; } .modes .sw { transform: rotate(90deg); }
}
@media (max-width: 900px) {
  .docs { display: block; }
  .docs > .toc { position: static; }
}

.qr { background: #ffffff; padding: 8px; border-radius: var(--r); max-width: 100%; height: auto; }
.buy { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }
.search, .rowform { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin: 6px 0; }
.search input, .rowform input[type=text] { width: auto; flex: 1 1 160px; }
.filters { margin: 8px 0; }
.spaced { margin-top: 12px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.prose h2 { margin-top: 1.4em; font-size: 1.05rem; }
.prose p { max-width: 70ch; }
strong.bad { color: var(--bad); }
.stat { font-family: var(--mono); font-weight: 600; color: var(--ink); font-variant-numeric: tabular-nums; }
.renew { border-color: rgba(244, 184, 12, .45); }
.renew p { margin: 4px 0; }
.small { font-size: 13px; }
.renew h2 { font-size: 18px; margin-bottom: 8px; }
.calc { background: var(--brand-soft); border-left: 2px solid var(--brand); border-radius: 0 var(--r) var(--r) 0; padding: 8px 12px;
        font-family: var(--mono); font-size: 14px; font-variant-numeric: tabular-nums; }
.warn-line { color: var(--brand); font-size: 14px; }
.rules { margin-top: 10px; border-top: 1px solid var(--line); padding-top: 8px; }
.rules summary { cursor: pointer; color: var(--brand); font-weight: 600; }
.rules ul { margin: 8px 0 0; padding-left: 18px; color: var(--muted); font-size: 14px; display: grid; gap: 6px; }

/* ---- hop thu: tin bot co avatar luc giac PckBot ---- */
.count { display: inline-block; min-width: 20px; padding: 0 6px; border-radius: 4px; background: var(--brand); color: var(--brand-ink);
         font: 600 11.5px/20px var(--mono); text-align: center; vertical-align: middle; }
.msg { position: relative; }
.msg.unread { border-color: rgba(244, 184, 12, .45); }
.msg.from-bot { padding-left: 60px; }
.msg.from-bot::before { content: ""; position: absolute; left: 16px; top: 16px; width: 30px; height: 30px; border-radius: 50%;
                        background: url(/static/img/bot.png) center / cover no-repeat; box-shadow: 0 0 0 1px var(--line-2); }
.msg.from-team { border-left: 2px solid var(--accent); }
.msg.from-me { margin-left: auto; max-width: 80%; background: var(--card-2); border-color: var(--line-2); }
.msg-meta { margin: 0 0 8px; font: 12.5px/1.5 var(--mono); }
.msg-meta b { font-family: var(--font); }
.msg-meta .new { color: var(--brand); font-weight: 600; }
.msg-text { white-space: pre-wrap; overflow-wrap: anywhere; }
.msg-text pre, .msg-text code { background: var(--bg); border: 1px solid var(--line-2); border-radius: 4px; padding: 1px 6px; font-size: .88em; }
/* bang chu deu cot cua bot (cung bo cuc Telegram): khung nhu .panel, so mono thang cot, lai xanh / lo do */
.msg-text pre { display: block; width: fit-content; max-width: 100%; margin: 6px 0; padding: 10px 14px; overflow-x: auto;
                white-space: pre; background: var(--bg); border: 1px solid var(--line-2); border-radius: var(--r);
                font: 13.5px/1.6 var(--mono); font-variant-numeric: tabular-nums; color: var(--ink); }
/* tin bot dung lai thanh khung giong the ban tin (web/inbox.rich_html): cung thu tu, cung chu voi Telegram */
.msg-rich { margin-top: 4px; box-shadow: none; font-size: 14px; line-height: 1.55; overflow-wrap: anywhere; }
.msg-rich .panel-head span { color: var(--ink); font-weight: 600; }
.msg-rich .panel-head b { font-weight: 600; }
.msg-rich .sec { display: grid; gap: 6px; padding: 12px 16px; border-top: 1px solid var(--line); min-width: 0; }
.msg-rich .panel-head + .sec { border-top: 0; }
.msg-rich .sec.tbl { padding: 0; gap: 0; }
.msg-rich .sec p { margin: 0; max-width: 92ch; }
.msg-rich .sec .k { color: var(--brand); margin-top: 2px; }
.msg-rich .sec .k b { font-weight: 500; }
.msg-rich .m-cmd { display: grid; grid-template-columns: 12.5rem minmax(0, 1fr); gap: 2px 16px; }
.msg-rich .m-cmd code { font: 500 13px/1.6 var(--mono); color: var(--brand); background: none; border: 0; padding: 0; }
.msg-rich .m-cmd span { color: var(--muted); }
.msg-rich ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 4px; }
.msg-rich li { display: grid; grid-template-columns: 14px minmax(0, 1fr); gap: 8px; }
.msg-rich li .mk { color: var(--faint); font-family: var(--mono); }
.msg-rich li .mk.m-plus { color: var(--up); }
.msg-rich code { font: 13px var(--mono); background: var(--bg); border: 1px solid var(--line-2); border-radius: 4px; padding: 0 5px; }
.msg-rich .panel-foot i { font-style: normal; }
.msg-rich table.ptable td.tx { text-align: left; }
.msg-rich table.ptable td.likely { color: var(--brand); font-weight: 600; background: var(--brand-soft); }
.msg-rich pre { margin: 0; padding: 10px 14px; overflow-x: auto; white-space: pre; background: var(--bg); border: 1px solid var(--line-2);
                border-radius: var(--r); font: 13.5px/1.6 var(--mono); }
.msg.from-me .msg-rich { background: transparent; border: 0; }
.msg.from-me .msg-rich .panel-head { padding: 0; border: 0; font: 400 14.5px/1.55 var(--font); }
.msg.from-me .msg-rich .panel-head span { font-weight: 400; }
@media (max-width: 640px) { .msg-rich .m-cmd { grid-template-columns: minmax(0, 1fr); } }
.msg-photo { display: block; max-width: 100%; height: auto; border-radius: var(--r); background: #ffffff; }
.msg-buttons { display: grid; gap: 6px; margin-top: 12px; }
.msg-row { display: flex; flex-wrap: wrap; gap: 6px; }
textarea { width: 100%; }
.hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.thread { white-space: pre-wrap; overflow-wrap: anywhere; }

/* ---- trang danh muc: bang sua truc tiep; bang rong hon man hinh thi cuon ngang trong the, khong cuon ca trang ---- */
.book-card { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.book { min-width: 900px; }
.book td { vertical-align: top; }
.book th small { font-weight: 400; color: var(--muted); text-transform: none; letter-spacing: 0; }
.book input[type=text], .book input[type=date], .book select {
  width: 100%; min-width: 0; padding: 5px 6px; font: inherit; font-size: 14px; color: var(--ink); background: var(--bg);
  border: 1px solid var(--line-2); border-radius: 4px; }
.book td.num input { text-align: right; font-family: var(--mono); }
.book input[disabled], .book select[disabled] { opacity: .55; }
.book .c-sym { width: 110px; } .book .c-tui { width: 120px; } .book .c-n { width: 105px; } .book .c-date { width: 150px; }
.book .acts { min-width: 200px; }
.book .acts .btn { margin: 0 4px 4px 0; }
.book details.book-more { display: inline-block; margin: 0 6px 4px 0; vertical-align: top; }
.book details.book-more summary { cursor: pointer; color: var(--brand); }
.book details[open].book-more { display: block; }
.book form.book-op { display: grid; gap: 6px; margin-top: 6px; max-width: 220px; }
.book form.book-op label { display: grid; gap: 2px; font-weight: 400; font-size: 14px; }
.book tr.book-new td { border-bottom: 0; }
.rowmsg { display: block; font-size: 13px; }
.rowmsg.wait { color: var(--muted); }
.rowmsg.ok { color: var(--ok); }
.rowmsg.bad { color: var(--bad); }

/* ================= trang chu ================= */
.eyebrow { margin: 0; font: 500 12px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted);
           display: flex; align-items: center; gap: 10px; }
.eyebrow::before { content: ""; width: 18px; height: 1px; background: var(--brand); }
.hero { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.08fr); gap: 56px; align-items: center; padding: 36px 0 48px; }
.hero h1 { font-size: clamp(30px, 3.8vw, 44px); line-height: 1.08; margin: 20px 0; letter-spacing: -.03em; }
.hero h1 span { color: var(--muted); font-weight: 500; }
.hero .lead { font-size: 17px; max-width: 46ch; margin: 0; }
.hero .cta-row { margin: 28px 0 0; }
.hero .fine { margin: 20px 0 0; font-size: 12.5px; color: var(--faint); max-width: 54ch; }

/* khung dung lai mot tin bot (du lieu mau), khong phai anh chup */
.panel { background: var(--card); border: 1px solid var(--line); border-radius: var(--r-card); overflow: hidden; min-width: 0;
         box-shadow: 0 24px 60px -30px rgba(0, 0, 0, .7); }
.panel-head { display: flex; justify-content: space-between; align-items: center; gap: 6px 12px; padding: 12px 16px; margin: 0;
              border-bottom: 1px solid var(--line); font: 500 12px/1.3 var(--mono); color: var(--muted); flex-wrap: wrap; }
.panel-head b { color: var(--ink); font-weight: 600; }
.panel-foot { margin: 0; padding: 10px 16px; border-top: 1px solid var(--line); font: 11.5px/1.5 var(--mono); color: var(--faint); }
.k { font: 500 11px/1.3 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--faint); }
.v { font: 600 15px/1.3 var(--mono); font-variant-numeric: tabular-nums; }
.n { font-family: var(--mono); font-variant-numeric: tabular-nums; color: var(--ink); }
.pill { display: inline-block; font: 600 11px/1 var(--mono); letter-spacing: .04em; padding: 4px 7px; border-radius: 4px; border: 1px solid currentColor; }
.mkt { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-bottom: 1px solid var(--line); }
.mkt > div { padding: 12px 16px; display: grid; gap: 4px; align-content: start; }
.mkt > div + div { border-left: 1px solid var(--line); }
.mkt .use { display: flex; justify-content: space-between; gap: 8px; font: 500 13px/1.4 var(--mono); font-variant-numeric: tabular-nums; }
.mkt .use small { font: 400 12px/1.4 var(--font); color: var(--muted); }
.scroll { overflow-x: auto; }
.panel table { font: 13px/1.4 var(--mono); font-variant-numeric: tabular-nums; }
.panel th { text-align: right; padding: 10px 16px 8px; white-space: nowrap; border-bottom: 0; }
.panel td { padding: 9px 16px; text-align: right; border-bottom: 0; border-top: 1px solid var(--line); white-space: nowrap; overflow-wrap: normal; }
.panel th:first-child, .panel td:first-child { text-align: left; }
.panel td.t { font-weight: 600; }
.panel tr.grp td { font: 500 10.5px/1.2 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--brand);
                   background: var(--card-2); padding-top: 8px; padding-bottom: 6px; }
.panel td.t small { font: 400 11px var(--font); color: var(--faint); margin-left: 6px; }
.adj { margin: 0; padding: 12px 16px; border-top: 1px solid var(--line); background: var(--card-2); display: grid; gap: 6px; font-size: 13.5px; }
.adj span.k { margin-right: 10px; color: var(--brand); }
.adj p, .lines p { margin: 0; }
.lines { margin: 0; padding: 12px 16px; border-top: 1px solid var(--line); display: grid; gap: 4px; font-size: 13.5px; color: var(--muted); }
.panel td small { font: 400 11px var(--font); color: var(--faint); margin-left: 4px; }
.pill.muted { color: var(--muted); }
/* the trong Hop thu: nam trong khung tin, khong do bong chong */
.msg .inbox-card { box-shadow: none; margin-top: 4px; }

.method { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 24px 0; display: grid;
          grid-template-columns: 230px minmax(0, 1fr); gap: 24px; align-items: start; }
.method h2 { font-size: 15px; margin: 0; }
.method h2 small { display: block; color: var(--faint); font: 400 12.5px/1.5 var(--font); margin-top: 4px; letter-spacing: 0; }
.facts { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 16px 0; margin: 0; }
.fact { padding: 0 18px; border-left: 1px solid var(--line); display: grid; gap: 4px; align-content: start; margin: 0; }
.fact dt { font: 600 13px/1.35 var(--mono); color: var(--ink); }
.fact dd { margin: 0; font-size: 13px; color: var(--muted); line-height: 1.5; }

.pillars { padding: 72px 0 24px; display: grid; gap: 88px; }
.pillar { display: grid; grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr); gap: 56px; align-items: start; }
.pillar-text { display: grid; gap: 14px; position: sticky; top: 90px; }
.pillar-text .eyebrow { color: var(--brand); }
/* khau hieu (chu du an chot 15/10/2026): mot dong tram, vach vang ben trai, khong gradient */
.pillar-text .motto { margin: -4px 0 0; padding-left: 12px; border-left: 2px solid var(--brand); color: var(--ink); font-style: italic; }
.pillar-text h2 { font-size: clamp(23px, 2.6vw, 30px); line-height: 1.2; margin: 0; }
.pillar-text p { color: var(--muted); max-width: 46ch; margin: 0; }
.points { list-style: none; padding: 0; margin: 4px 0 0; display: grid; gap: 8px; font-size: 14px; }
.points li { position: relative; padding-left: 24px; }
.points li::before { content: ""; position: absolute; left: 2px; top: 8px; width: 7px; height: 7px; border: 1.5px solid var(--brand);
                     transform: rotate(45deg); }
.points code { font-size: .86em; padding: 1px 5px; border: 1px solid var(--line-2); border-radius: 4px; }
.cmds { display: flex; flex-wrap: wrap; gap: 6px; margin: 4px 0 0; }
.cmds code { font: 500 12px/1 var(--mono); padding: 6px 8px; border: 1px solid var(--line-2); border-radius: 4px; color: var(--ink); }
.pillar-text .chips { margin: 0; }
.pillar-text .plan-counts { font-size: 13px; color: var(--faint); margin: 4px 0 -6px; }

/* ke hoach thang: nhom VAO / ROI / GIU */
.plan-body { display: grid; gap: 0; }
.plan-meta { margin: 0; padding: 12px 16px; font-size: 13.5px; color: var(--muted); display: grid; gap: 2px; }
.plan-group { display: grid; grid-template-columns: 92px minmax(0, 1fr); gap: 12px; padding: 10px 16px; border-top: 1px solid var(--line);
              font-size: 13.5px; align-items: baseline; margin: 0; }
.plan-group dd { margin: 0; display: grid; gap: 2px; }
.plan-acts { display: flex; gap: 8px; flex-wrap: wrap; padding: 12px 16px; border-top: 1px solid var(--line); background: var(--card-2); }
.fakebtn { font: 500 12.5px/1 var(--font); padding: 8px 12px; border-radius: 5px; border: 1px solid var(--line-2); color: var(--ink); }
.fakebtn.on { background: var(--brand-soft); border-color: rgba(244, 184, 12, .5); color: var(--brand); }

/* tro ly AI */
.chat { padding: 18px 16px; display: grid; gap: 16px; }
.q { justify-self: end; max-width: 80%; margin: 0; background: var(--card-2); border: 1px solid var(--line-2); border-radius: 8px 8px 2px 8px;
     padding: 10px 14px; font-size: 14px; }
.ans { border: 1px solid var(--line-2); border-radius: var(--r-card); overflow: hidden; }
.ans-head { display: flex; align-items: center; gap: 10px 12px; padding: 12px 14px; background: var(--card-2); border-bottom: 1px solid var(--line);
            flex-wrap: wrap; margin: 0; font-size: 14px; }
.ans-sec { padding: 10px 14px; border-top: 1px solid var(--line); display: grid; gap: 4px; font-size: 13.5px; color: var(--muted); }
.ans-sec:first-of-type { border-top: 0; }
.ans-sec h3 { font: 500 11px/1.3 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--faint); margin: 0 0 2px; }
.ans-sec p { margin: 0; }
.ans-sec ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 3px; }
.ans-sec li { display: grid; grid-template-columns: 16px minmax(0, 1fr); gap: 6px; }
.ans-sec li b { font: 600 13px/1.5 var(--mono); }

/* anh that bot ve: luoi 2 x 2, bam de phong to (home.js) */
.gallery { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin: 0; }
.gallery figcaption { grid-column: 1 / -1; color: var(--faint); font: 11.5px/1.5 var(--mono); }
.shot { display: block; width: 100%; height: auto; aspect-ratio: 4 / 3; object-fit: cover; object-position: top left;
        border-radius: var(--r); border: 1px solid var(--line-2); background: #ffffff; transition: border-color .15s; }
.shot:hover, .shot:focus-visible { border-color: var(--muted); outline: none; }
.zoomable { cursor: zoom-in; }
.lightbox { position: fixed; inset: 0; z-index: 50; display: flex; align-items: center; justify-content: center;
            padding: 16px; background: rgba(4, 8, 18, .9); cursor: zoom-out; }
.lightbox[hidden] { display: none; }
.lightbox img { max-width: min(96vw, 1700px); max-height: 92vh; width: auto; height: auto; border-radius: var(--r);
                background: #ffffff; box-shadow: 0 10px 40px rgba(0, 0, 0, .6); }
.lightbox .close { position: absolute; top: 12px; right: 16px; font-size: 28px; line-height: 1; color: #fff; background: none;
                   border: 0; cursor: pointer; padding: 6px 10px; }

.stack-panels { display: grid; gap: 16px; min-width: 0; }
.panel dl { margin: 0; }
.panel dl > .plan-group:first-child { border-top: 0; }
/* chia von hai tui: ty le bang lop co dinh (CSP style-src 'self' cam style= tren the) */
.alloc { display: flex; gap: 3px; margin: 14px 16px 4px; height: 30px; font: 600 11.5px/30px var(--mono); }
.seg { border-radius: 4px; padding: 0 10px; white-space: nowrap; overflow: hidden; }
.seg-inv { flex: 2; background: var(--brand); color: var(--brand-ink); }
.seg-swing { flex: 1; background: var(--card-2); color: var(--ink); box-shadow: inset 0 0 0 1px var(--line-2); }
.alloc-rows { margin: 0; padding: 8px 16px 12px; display: grid; gap: 6px; font-size: 13.5px; }
.alloc-rows > div { display: flex; justify-content: space-between; gap: 6px 12px; flex-wrap: wrap; }
.alloc-rows dt { font-weight: 600; }
.alloc-rows dd { margin: 0; color: var(--muted); }
.events { list-style: none; margin: 0; padding: 0; }
.events li { display: grid; grid-template-columns: 52px minmax(0, 1fr) auto; gap: 12px; align-items: center; padding: 9px 16px;
             border-top: 1px solid var(--line); font-size: 13.5px; }
.events li:first-child { border-top: 0; }
.events .n { color: var(--muted); }
.panel table.fc td.likely { color: var(--brand); font-weight: 600; background: var(--brand-soft); }
.snaps-list { list-style: none; margin: 0; padding: 0; }
.snaps-list li { display: grid; grid-template-columns: 36px minmax(0, 1fr) auto; gap: 12px; padding: 10px 16px;
                 border-top: 1px solid var(--line); font-size: 13.5px; align-items: baseline; }
.snaps-list li:first-child { border-top: 0; }
.snaps-list .n { color: var(--muted); }
.panel .tag { margin-left: 4px; color: var(--brand); border-color: rgba(244, 184, 12, .45); }
.pillars + .method { margin-top: 48px; }
.matrix-sec { padding: 64px 0 0; display: grid; gap: 20px; }
.matrix-head { display: grid; gap: 10px; }
.matrix-head h2 { font-size: clamp(23px, 2.6vw, 30px); line-height: 1.2; margin: 0; }
.matrix-head .lead { margin: 0; }
.matrix { font-size: 14px; }
.matrix th, .matrix td { padding: 10px 12px; }
.matrix thead th { text-align: center; font-size: 12px; color: var(--ink); }
.matrix thead th:first-child { text-align: left; color: var(--faint); }
.matrix tbody th { font: 400 14px/1.45 var(--font); text-transform: none; letter-spacing: 0; color: var(--ink); }
.matrix th, .matrix td { overflow-wrap: normal; }               /* bang chung de "anywhere": man hep bop cot ten con 1 ky tu */
.matrix tbody th { min-width: 9.5rem; }
.matrix td { text-align: center; white-space: nowrap; width: 20%; }
.matrix td.small { white-space: normal; line-height: 1.35; }
.matrix .yes { color: var(--brand); }
.matrix .no { color: var(--faint); }
.matrix .price-row td { font: 600 14px var(--mono); color: var(--ink); }
.start { padding: 64px 0 24px; border-top: 1px solid var(--line); margin-top: 48px; display: grid;
         grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr); gap: 56px; }
.start h2 { font-size: clamp(23px, 2.6vw, 30px); line-height: 1.2; margin: 14px 0 0; }
.start .lead { margin: 12px 0 0; }
.start .cta-row { margin-top: 24px; }
.steps { list-style: none; margin: 0; padding: 0; counter-reset: s; }
.steps li { counter-increment: s; display: grid; grid-template-columns: 56px minmax(0, 1fr); gap: 16px; padding: 18px 0; margin: 0;
            border-top: 1px solid var(--line); }
.steps li:last-child { border-bottom: 1px solid var(--line); }
.steps li::before { content: "0" counter(s); font: 500 13px/1.6 var(--mono); color: var(--brand); }
.steps b { display: block; font-weight: 600; margin-bottom: 2px; }
.steps span { color: var(--muted); font-size: 14px; }

@media (max-width: 900px) {
  .hero, .pillar, .start { grid-template-columns: minmax(0, 1fr); gap: 32px; }
  .hero { padding: 20px 0 40px; }
  .pillar-text { position: static; }
  .method { grid-template-columns: minmax(0, 1fr); }
  .pillars { gap: 64px; padding: 56px 0 16px; }
}
@media (max-width: 640px) {
  h1 { font-size: 24px; }
  .guide th:first-child, .guide th:last-child { width: auto; }
  .guide table, .guide thead, .guide tbody, .guide tr, .guide td { display: block; }
  .guide thead { display: none; }
  .guide tr { padding: 8px 0; border-bottom: 1px solid var(--line); }
  .guide td { border: 0; padding: 2px 0; }
  .row { grid-template-columns: 1fr; gap: 4px; }
  .mkt { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .mkt > div:nth-child(3) { grid-column: 1 / -1; border-left: 0; border-top: 1px solid var(--line); }
  .fact { padding: 0 0 0 14px; }
  .plan-group { grid-template-columns: minmax(0, 1fr); gap: 2px; }
  .q, .msg.from-me { max-width: 100%; }
  .matrix th, .matrix td { padding: 8px 6px; }
  .matrix tbody th { font-size: 13px; min-width: 8rem; }
  .matrix td.small { font-size: 11.5px; }
  .matrix .price-row td { font-size: 12px; }
  .matrix thead th { font-size: 10.5px; letter-spacing: .02em; }
  .msg.from-bot { padding-left: 18px; padding-top: 54px; }
  .msg.from-bot::before { top: 14px; left: 18px; width: 28px; height: 28px; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }