/* Be Vietnam Pro — font thiết kế cho tiếng Việt (11/10/2026 thay Space Grotesk + Manrope: dấu tiếng Việt bị dính/lệch) */
@font-face{font-family:'Be Vietnam Pro';font-style:normal;font-weight:400;font-display:swap;src:url(fonts/be-vietnam-pro-vietnamese-400.woff2) format('woff2');unicode-range:U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB}
@font-face{font-family:'Be Vietnam Pro';font-style:normal;font-weight:400;font-display:swap;src:url(fonts/be-vietnam-pro-latin-ext-400.woff2) format('woff2');unicode-range:U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF}
@font-face{font-family:'Be Vietnam Pro';font-style:normal;font-weight:400;font-display:swap;src:url(fonts/be-vietnam-pro-latin-400.woff2) format('woff2');unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD}
@font-face{font-family:'Be Vietnam Pro';font-style:normal;font-weight:500;font-display:swap;src:url(fonts/be-vietnam-pro-vietnamese-500.woff2) format('woff2');unicode-range:U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB}
@font-face{font-family:'Be Vietnam Pro';font-style:normal;font-weight:500;font-display:swap;src:url(fonts/be-vietnam-pro-latin-ext-500.woff2) format('woff2');unicode-range:U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF}
@font-face{font-family:'Be Vietnam Pro';font-style:normal;font-weight:500;font-display:swap;src:url(fonts/be-vietnam-pro-latin-500.woff2) format('woff2');unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD}
@font-face{font-family:'Be Vietnam Pro';font-style:normal;font-weight:600;font-display:swap;src:url(fonts/be-vietnam-pro-vietnamese-600.woff2) format('woff2');unicode-range:U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB}
@font-face{font-family:'Be Vietnam Pro';font-style:normal;font-weight:600;font-display:swap;src:url(fonts/be-vietnam-pro-latin-ext-600.woff2) format('woff2');unicode-range:U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF}
@font-face{font-family:'Be Vietnam Pro';font-style:normal;font-weight:600;font-display:swap;src:url(fonts/be-vietnam-pro-latin-600.woff2) format('woff2');unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD}
@font-face{font-family:'Be Vietnam Pro';font-style:normal;font-weight:700;font-display:swap;src:url(fonts/be-vietnam-pro-vietnamese-700.woff2) format('woff2');unicode-range:U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB}
@font-face{font-family:'Be Vietnam Pro';font-style:normal;font-weight:700;font-display:swap;src:url(fonts/be-vietnam-pro-latin-ext-700.woff2) format('woff2');unicode-range:U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF}
@font-face{font-family:'Be Vietnam Pro';font-style:normal;font-weight:700;font-display:swap;src:url(fonts/be-vietnam-pro-latin-700.woff2) format('woff2');unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD}
/* Phông tự lưu (Google Fonts, giấy phép OFL) — chỉ giữ bộ chữ latin, latin-ext, vietnamese */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400 500;
  font-display: swap;
  src: url(fonts/jetbrains-mono-vietnamese.woff2) format('woff2');
  unicode-range: U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB;
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400 500;
  font-display: swap;
  src: url(fonts/jetbrains-mono-latin-ext.woff2) format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400 500;
  font-display: swap;
  src: url(fonts/jetbrains-mono-latin.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Manrope';
  font-style: normal;
  font-weight: 400 800;
  font-display: swap;
  src: url(fonts/manrope-vietnamese.woff2) format('woff2');
  unicode-range: U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB;
}
@font-face {
  font-family: 'Manrope';
  font-style: normal;
  font-weight: 400 800;
  font-display: swap;
  src: url(fonts/manrope-latin-ext.woff2) format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'Manrope';
  font-style: normal;
  font-weight: 400 800;
  font-display: swap;
  src: url(fonts/manrope-latin.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Space Grotesk';
  font-style: normal;
  font-weight: 500 700;
  font-display: swap;
  src: url(fonts/space-grotesk-vietnamese.woff2) format('woff2');
  unicode-range: U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB;
}
@font-face {
  font-family: 'Space Grotesk';
  font-style: normal;
  font-weight: 500 700;
  font-display: swap;
  src: url(fonts/space-grotesk-latin-ext.woff2) format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'Space Grotesk';
  font-style: normal;
  font-weight: 500 700;
  font-display: swap;
  src: url(fonts/space-grotesk-latin.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* MINIGATE — hệ thiết kế chung cho 10 trang.
   Đen sâu → xám → bạc → trắng nhẹ. Không dùng màu nhấn.
   Nền hạt 3D (nen-hat-3d.js) nằm cố định phía sau; mọi thứ trong #site là chữ + thẻ kính.
   Tỷ lệ: 70% nội dung · 20% tương tác · 10% hiệu ứng. */
/* ════════════════════════════════════════════════════════════════════════
   HỆ MÀU — bản 3 (25/09): mọi màu đi qua token, chế độ sáng/tối đổi bằng
   thuộc tính data-theme trên <html> (script chống nháy trong <head> đặt nó,
   nút trong header đổi nó, lưu ở localStorage["mg-theme"]).
   Đổi màu nhấn: chỉ sửa --accent / --accent-2 ở hai khối dưới.
   ════════════════════════════════════════════════════════════════════════ */
:root{
  /* tối (mặc định) */
  --bg:#070707; --bg-2:#0D0D0F; --bg-3:#141416;
  --surface:rgba(255,255,255,.035); --surface-2:rgba(255,255,255,.07); --surface-3:rgba(255,255,255,.11);
  --line:rgba(255,255,255,.08); --line-2:rgba(255,255,255,.15); --line-3:rgba(255,255,255,.3);
  --text:#F4F4F5; --hi:#FFFFFF; --muted:#A1A1AA; --dim:#71717A; --silver-l:#B4B4BB;
  --accent:#4F7CFF; --accent-2:#8FAAFF; --accent-soft:rgba(79,124,255,.14); --accent-line:rgba(79,124,255,.45); --on-accent:#FFFFFF;
  --btn-bg:var(--accent); --btn-fg:#FFFFFF; --btn-bg-h:#3D6BFF;
  --ico:#FFFFFF; --ok:#3ECF8E;
  --hdr-bg:rgba(7,7,7,.72); --foot-bg:#0A0A0B;
  --viz-ln:rgba(255,255,255,.34); --viz-ln-dim:rgba(255,255,255,.14); --viz-hot:var(--accent-2);
  --viz-bx:rgba(255,255,255,.06); --viz-bx-s:rgba(255,255,255,.36); --viz-bx-hi:rgba(79,124,255,.18); --viz-bx-hi-s:var(--accent-2);
  --viz-text:#E6E6E6; --viz-cap:#8A8A93; --viz-dot:#FFFFFF; --viz-dot-dim:rgba(255,255,255,.4);
  --fc-l:#161616; --fc-r:#0B0B0B; --fc-t:#262626; --fc-t-hot:#2E3F6E;
  --shadow:0 1px 0 rgba(255,255,255,.04) inset; --shadow-lg:0 30px 60px -30px rgba(0,0,0,.7);
  --glow:radial-gradient(900px 520px at 78% 0%,rgba(79,124,255,.16),transparent 62%);
  --f-head:"Be Vietnam Pro","Segoe UI",system-ui,sans-serif;
  --f-body:"Be Vietnam Pro","Segoe UI",system-ui,sans-serif;
  --f-mono:"JetBrains Mono",ui-monospace,Menlo,monospace;
  --wrap:1200px; --r:16px; --fs:1;
  --ang:225deg; --sx:-1;                 /* giữ cho tương thích các rule cũ */
  --tdh:210; --tds:0%;                   /* engine 3D vẫn ghi 2 biến này, không còn dùng cho chữ */
  --f-op:.25; --f-shift:18px;
  color-scheme:dark;
}
:root[data-theme="light"]{
  --bg:#FAFAFA; --bg-2:#F3F3F4; --bg-3:#ECECEE;
  --surface:#FFFFFF; --surface-2:#F4F4F5; --surface-3:#E9E9EC;
  --line:rgba(0,0,0,.08); --line-2:rgba(0,0,0,.13); --line-3:rgba(0,0,0,.28);
  --text:#151517; --hi:#000000; --muted:#52525B; --dim:#75757E; --silver-l:#5C5C66;
  --accent:#3161E8; --accent-2:#2B55CF; --accent-soft:rgba(49,97,232,.10); --accent-line:rgba(49,97,232,.4); --on-accent:#FFFFFF;
  --btn-bg:var(--accent); --btn-fg:#FFFFFF; --btn-bg-h:#2653D4;
  --ico:#151517; --ok:#1E9E68;
  --hdr-bg:rgba(250,250,250,.78); --foot-bg:#F3F3F4;
  --viz-ln:rgba(0,0,0,.3); --viz-ln-dim:rgba(0,0,0,.12); --viz-hot:var(--accent);
  --viz-bx:#FFFFFF; --viz-bx-s:rgba(0,0,0,.3); --viz-bx-hi:rgba(49,97,232,.1); --viz-bx-hi-s:var(--accent);
  --viz-text:#222; --viz-cap:#777; --viz-dot:#151517; --viz-dot-dim:rgba(0,0,0,.35);
  --fc-l:#E6E6E9; --fc-r:#D2D2D7; --fc-t:#FFFFFF; --fc-t-hot:#DCE5FF;
  --shadow:0 1px 2px rgba(0,0,0,.04); --shadow-lg:0 24px 50px -28px rgba(0,0,0,.22);
  --glow:radial-gradient(900px 520px at 78% 0%,rgba(49,97,232,.12),transparent 62%);
  color-scheme:light;
}
/* màn rộng: chữ, ô, khoảng cách cùng giãn theo --fs (2K ≈ 2560px → 1.22) */
@media (min-width:1600px){:root{--wrap:1360px;--fs:1.1}}
@media (min-width:1900px){:root{--wrap:1480px;--fs:1.16}}
@media (min-width:2300px){:root{--wrap:1640px;--fs:1.24}}
@media (min-width:3000px){:root{--wrap:2000px;--fs:1.45}}
@media (max-width:768px){:root{--f-shift:12px}}

*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;background:var(--bg)}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--f-body);font-size:calc(17px*var(--fs));line-height:1.7;-webkit-font-smoothing:antialiased;overflow-x:hidden;transition:background-color .25s,color .25s}
img{max-width:100%}
[hidden]{display:none!important}
p{margin:0}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:var(--f-head);margin:0;letter-spacing:-.025em;line-height:1.18;text-wrap:balance;color:var(--hi)}
h3{font-weight:600}
.mono{font-family:var(--f-mono)}
.wrap{width:min(var(--wrap),calc(100% - 40px));margin:0 auto}
::selection{background:var(--accent);color:#fff}

/* ── Nền hạt 3D (chỉ trang chủ) ── */
#bg3d{position:fixed;inset:0;width:100%!important;height:100%!important;z-index:1;background:transparent;pointer-events:none;opacity:0;transition:opacity .2s linear}
:root[data-theme="light"] #bg3d{filter:invert(1) opacity(.4)}
#site{position:relative;z-index:2}

/* ── Chữ: phẳng, không gradient, không bóng ── */
h1{font-size:calc(clamp(38px,5.4vw,70px)*var(--fs));font-weight:700;letter-spacing:-.035em;line-height:1.04}
h2{font-size:calc(clamp(30px,3.7vw,50px)*var(--fs));font-weight:700}
h3{font-size:calc(21px*var(--fs))}
.eyebrow{font-family:var(--f-head);font-size:calc(13px*var(--fs));font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--accent-2)}
.lead{color:var(--muted);font-size:calc(19px*var(--fs))}
.lead.sm{font-size:calc(16.5px*var(--fs))}
.small{font-size:calc(14px*var(--fs));color:var(--muted)}
.tiny{font-size:calc(12.5px*var(--fs));color:var(--dim)}
.card p,.card small{color:var(--muted)}
strong,b{font-weight:700}

/* ── Bố cục ── */
section{padding:clamp(56px,8vw,calc(96px*var(--fs))) 0;position:relative}
.sec-head{display:flex;flex-direction:column;gap:16px;max-width:calc(780px*var(--fs));margin-bottom:calc(48px*var(--fs))}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center;align-items:center}
.sec-head .lead{max-width:calc(640px*var(--fs))}
.stack{display:flex;flex-direction:column;gap:22px}
.g2,.g3,.g4{display:grid;gap:calc(18px*var(--fs))}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:1000px){.g4{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:860px){.g3,.g2{grid-template-columns:1fr}}
@media (max-width:560px){.g4{grid-template-columns:1fr}}
.g5{display:grid;gap:16px;grid-template-columns:repeat(5,minmax(0,1fr))}
@media (max-width:1100px){.g5{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:560px){.g5{grid-template-columns:1fr}}
.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:calc(48px*var(--fs));align-items:center}
.split.form-split{grid-template-columns:minmax(0,7fr) minmax(0,4fr);align-items:start}
.split>*,.ind>*,.hero-grid>*,.g2>*,.g3>*,.g4>*,.g5>*,.bento>*{min-width:0}
@media (max-width:900px){.split,.split.form-split{grid-template-columns:1fr;gap:32px}}
.rule{border:0;border-top:1px solid var(--line);margin:0}

/* ── Thẻ: phẳng, viền 1px, sáng lên khi rê chuột ── */
.card{position:relative;border-radius:var(--r);padding:calc(26px*var(--fs));color:var(--text);border:1px solid var(--line);background:var(--surface);box-shadow:var(--shadow);
  transition:transform .3s cubic-bezier(.2,.8,.2,1),border-color .25s,background-color .25s}
a.card:hover,.card.hov:hover{transform:translateY(-3px);border-color:var(--line-3);background:var(--surface-2)}
.card.key{border-color:var(--accent-line)}
.card .inner{display:flex;flex-direction:column;gap:14px;height:100%}
.card.flat{padding:calc(22px*var(--fs))}
.ico{width:28px;height:28px;stroke:var(--accent-2);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;flex:none}
.num{display:inline-flex;align-items:center;justify-content:center;align-self:flex-start;min-width:38px;height:27px;padding:0 10px;border-radius:999px;
  font-family:var(--f-mono);font-size:calc(13px*var(--fs));letter-spacing:.04em;color:var(--accent-2);border:1px solid var(--accent-line);background:var(--accent-soft)}
.tag{display:inline-block;font-family:var(--f-mono);font-size:calc(12px*var(--fs));letter-spacing:.06em;color:var(--muted);border:1px solid var(--line-2);border-radius:999px;padding:4px 11px;background:var(--surface)}
.chips{display:flex;flex-wrap:wrap;gap:10px}
.chips span,.chips a{border:1px solid var(--line-2);background:var(--surface-2);border-radius:999px;padding:8px 15px;font-size:calc(14.5px*var(--fs));font-weight:600;color:var(--text)}
.mono-list{display:flex;flex-direction:column;gap:6px;font-family:var(--f-mono);font-size:calc(13px*var(--fs));color:var(--muted);margin-top:auto;padding-top:8px}
ul.tick{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:9px}
ul.tick li{position:relative;padding-left:26px;color:var(--text)}
ul.tick li::before{content:"";position:absolute;left:2px;top:.62em;width:11px;height:6px;border-left:1.8px solid var(--accent-2);border-bottom:1.8px solid var(--accent-2);transform:rotate(-45deg)}
ul.tick.nb li::before{width:6px;height:6px;border:0;border-radius:50%;background:var(--accent-2);transform:none;top:.72em}

/* ── Nút ── */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:calc(var(--r)*.65);padding:14px 24px;font-family:var(--f-head);font-weight:600;font-size:calc(16px*var(--fs));letter-spacing:-.005em;cursor:pointer;border:1px solid transparent;
  transition:transform .2s,box-shadow .2s,background-color .2s,border-color .2s;white-space:nowrap}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--btn-bg);color:var(--btn-fg);box-shadow:0 8px 24px -10px var(--accent)}
.btn-primary:hover{background:var(--btn-bg-h);box-shadow:0 12px 28px -10px var(--accent)}
.btn-ghost{color:var(--text);border-color:var(--line-3);background:transparent}
.btn-ghost:hover{border-color:var(--hi);background:var(--surface-2)}
.cta-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
@media (max-width:640px){.btn{white-space:normal;text-align:center}.cta-row .btn{flex:1 1 auto}}
.link-arrow{font-family:var(--f-head);font-weight:600;color:var(--hi);border-bottom:1.5px solid var(--line-3);padding-bottom:2px;transition:border-color .2s,color .2s}
.link-arrow:hover{border-color:var(--accent);color:var(--accent-2)}

/* ── Header ── */
header.top{position:sticky;top:0;z-index:30;background:var(--hdr-bg);-webkit-backdrop-filter:blur(18px) saturate(1.4);backdrop-filter:blur(18px) saturate(1.4);border-bottom:1px solid var(--line)}
:root{--hdr:72px}
:root.scrolled{--hdr:60px}
.nav{height:calc(var(--hdr)*var(--fs));transition:height .25s;display:flex;align-items:center;justify-content:space-between;gap:24px}
.logo{display:flex;align-items:center;gap:11px;font-family:var(--f-head);font-weight:700;font-size:calc(20px*var(--fs));letter-spacing:.14em;color:var(--hi)}
.logo img{width:calc(30px*var(--fs));height:calc(30px*var(--fs));display:block;object-fit:contain;filter:invert(1)}
:root[data-theme="light"] .logo img{filter:none}
.menu{display:flex;gap:4px;font-weight:600;font-size:calc(15px*var(--fs))}
.menu a{padding:9px 14px;border-radius:999px;color:var(--muted);transition:background-color .2s,color .2s}
.menu a:hover{color:var(--hi);background:var(--surface-2)}
.menu a[aria-current="page"]{color:var(--hi);background:var(--surface-3)}
.nav-right{display:flex;align-items:center;gap:10px}
.nav-cta{padding:10px 18px;font-size:calc(15px*var(--fs))}
.burger{display:none;background:none;border:0;padding:8px;cursor:pointer;color:var(--hi)}
.burger svg{width:26px;height:26px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round}
.menu .only-m{display:none}
/* nút sáng / tối */
.theme-btn{width:calc(40px*var(--fs));height:calc(40px*var(--fs));border-radius:999px;border:1px solid var(--line-2);background:var(--surface);color:var(--hi);cursor:pointer;display:grid;place-items:center;padding:0;transition:border-color .2s,background-color .2s,transform .2s}
.theme-btn:hover{border-color:var(--line-3);background:var(--surface-2)}
.theme-btn:active{transform:scale(.94)}
.theme-btn svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;grid-area:1/1;transition:opacity .25s,transform .35s}
.theme-btn .i-sun{opacity:0;transform:rotate(-60deg) scale(.6)}
.theme-btn .i-moon{opacity:1;transform:none}
:root[data-theme="light"] .theme-btn .i-sun{opacity:1;transform:none}
:root[data-theme="light"] .theme-btn .i-moon{opacity:0;transform:rotate(60deg) scale(.6)}
@media (max-width:1140px){
  .nav-cta{display:none}.burger{display:block}
  .menu{display:none}
  .menu.open{display:flex;flex-direction:column;gap:0;position:absolute;top:100%;left:0;right:0;height:calc(100vh - var(--hdr));height:calc(100dvh - var(--hdr));padding:20px 24px 40px;overflow-y:auto;background:var(--bg);border-top:1px solid var(--line);z-index:29}
  .menu.open a{display:block;padding:18px 4px;border-bottom:1px solid var(--line);font-family:var(--f-head);font-size:calc(24px*var(--fs));font-weight:600;border-radius:0;background:none;color:var(--hi)}
  .menu.open .only-m{display:block;color:var(--accent-2)}
  .menu.open .menu-contact{border:0;font:500 14px var(--f-mono);color:var(--muted);padding-top:22px}
}

/* ── Hero ── */
.hero{padding:clamp(48px,7vw,88px) 0 clamp(56px,7vw,88px);min-height:calc(100svh - 72px);display:flex;align-items:center;position:relative;overflow-x:clip}
.hero::before{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;background:var(--glow)}
.hero>.wrap{width:min(var(--wrap),calc(100% - 40px))}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);gap:calc(48px*var(--fs));align-items:center}
.hero-grid.solo{grid-template-columns:minmax(0,820px)}
@media (max-width:980px){.hero-grid{grid-template-columns:1fr;gap:36px}.hero{min-height:0}}
.hero-text{position:relative;display:flex;flex-direction:column;gap:calc(24px*var(--fs));max-width:calc(860px*var(--fs))}
.hero-text h1{font-size:calc(clamp(40px,5.6vw,74px)*var(--fs))}
/* nền hạt 3D: quầng tối mềm sau chữ để đọc rõ (chỉ khi tối) */
:root:not([data-theme="light"]) .mode-3d .hero-text::before{content:"";position:absolute;inset:-12% -16%;z-index:-1;pointer-events:none;background:radial-gradient(closest-side,rgba(7,7,7,.8) 0%,rgba(7,7,7,.5) 60%,rgba(7,7,7,0) 100%)}
/* chữ hero hiện dần từng dòng khi tải */
.hero-text>*{animation:rise .8s cubic-bezier(.2,.7,.2,1) both}
.hero-text>:nth-child(2){animation-delay:.08s}.hero-text>:nth-child(3){animation-delay:.16s}.hero-text>:nth-child(4){animation-delay:.24s}.hero-text>:nth-child(5){animation-delay:.32s}
.hero-mock{animation:rise 1s .25s cubic-bezier(.2,.7,.2,1) both}
@keyframes rise{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}
.trust{display:flex;flex-wrap:wrap;gap:8px 26px;font-family:var(--f-mono);font-size:calc(12.5px*var(--fs));letter-spacing:.06em;color:var(--muted);text-transform:uppercase;padding-top:6px;border-top:1px solid var(--line)}
.trust span{display:inline-flex;align-items:center;gap:8px;padding-top:14px}
.trust span::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
.crumb{display:flex;gap:10px;align-items:center}
.crumb::before{content:"";width:28px;height:1px;background:var(--accent-2)}
.scroll-cue{position:absolute;left:50%;bottom:22px;transform:translateX(-50%);font:500 11px var(--f-mono);letter-spacing:.2em;color:var(--dim);display:flex;flex-direction:column;align-items:center;gap:8px}
.scroll-cue::after{content:"";width:1px;height:34px;background:linear-gradient(var(--muted),transparent);animation:cue 2.4s ease-in-out infinite}
@keyframes cue{0%{transform:scaleY(0);transform-origin:top}50%{transform:scaleY(1);transform-origin:top}51%{transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}
@media (max-width:980px){.scroll-cue{display:none}}
/* .pane giữ tên cũ nhưng không còn hộp kính */
.pane{display:flex;flex-direction:column;gap:24px}

/* ── Mockup Odoo trong hero (HTML + CSS thuần, chạy vòng 4 bước) ── */
.hero-mock{position:relative;justify-self:end;width:100%;max-width:560px;zoom:var(--fs)}
.mock{border-radius:18px;border:1px solid var(--line-2);background:var(--bg-2);box-shadow:var(--shadow-lg),0 0 0 1px rgba(0,0,0,.2);overflow:hidden;font-size:13px}
:root:not([data-theme="light"]) .mode-3d .mock{background:rgba(13,13,15,.88);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}
.mock-bar{display:flex;align-items:center;gap:8px;padding:11px 14px;border-bottom:1px solid var(--line);background:var(--surface)}
.mock-bar i{width:10px;height:10px;border-radius:50%;background:var(--line-3)}
.mock-bar span{margin-left:8px;font:500 11.5px var(--f-mono);color:var(--dim);letter-spacing:.04em}
.mock-bar em{margin-left:auto;font:500 10.5px var(--f-mono);color:var(--ok);font-style:normal;display:inline-flex;align-items:center;gap:6px}
.mock-bar em::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 3px rgba(62,207,142,.18)}
.mock-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;padding:14px 14px 0}
.mock-steps span{position:relative;text-align:center;font:600 11px var(--f-mono);letter-spacing:.06em;text-transform:uppercase;padding:9px 4px;border-radius:9px;border:1px solid var(--line);color:var(--dim);background:var(--surface);transition:all .4s}
.mock-steps span::after{content:"";position:absolute;right:-6px;top:50%;width:5px;height:5px;margin-top:-3px;border-top:1.5px solid var(--dim);border-right:1.5px solid var(--dim);transform:rotate(45deg)}
.mock-steps span:last-child::after{display:none}
.mock-steps span.on{color:var(--on-accent);background:var(--accent);border-color:var(--accent)}
.mock-steps span.done{color:var(--accent-2);border-color:var(--accent-line);background:var(--accent-soft)}
.mock-body{padding:14px}
.mock-doc{border:1px solid var(--line);border-radius:12px;background:var(--surface);padding:14px}
.mock-head{display:flex;justify-content:space-between;align-items:baseline;gap:10px;margin-bottom:10px}
.mock-head b{font:700 16px var(--f-head);color:var(--hi);letter-spacing:-.01em}
.mock-head .st{font:500 10.5px var(--f-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--accent-2);border:1px solid var(--accent-line);padding:3px 8px;border-radius:999px;background:var(--accent-soft)}
.mock-kv{display:grid;grid-template-columns:1fr 1fr;gap:6px 16px;font:500 12px var(--f-mono);color:var(--dim);margin-bottom:12px}
.mock-kv b{color:var(--text);font-weight:500}
.mock-tbl{width:100%;border-collapse:collapse;font-size:12.5px}
.mock-tbl th{font:500 10px var(--f-mono);letter-spacing:.1em;text-transform:uppercase;color:var(--dim);text-align:left;padding:6px 0;border-bottom:1px solid var(--line)}
.mock-tbl td{padding:7px 0;border-bottom:1px solid var(--line);color:var(--text)}
.mock-tbl td:last-child,.mock-tbl th:last-child{text-align:right;font-family:var(--f-mono)}
.mock-tbl tr.total td{border:0;font-weight:700;color:var(--hi);padding-top:9px}
.mock-toast{position:absolute;right:-18px;bottom:22px;display:flex;gap:10px;align-items:center;padding:10px 14px;border-radius:12px;border:1px solid var(--line-2);background:var(--bg-3);box-shadow:var(--shadow-lg);font-size:12.5px;color:var(--text);max-width:250px;animation:toast 10s ease-in-out infinite}
.mock-toast i{width:30px;height:30px;border-radius:9px;flex:none;display:grid;place-items:center;background:var(--accent-soft);border:1px solid var(--accent-line)}
.mock-toast i svg{width:16px;height:16px;stroke:var(--accent-2);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.mock-toast small{display:block;color:var(--dim);font:500 10.5px var(--f-mono);letter-spacing:.06em;margin-bottom:2px}
@keyframes toast{0%,18%{opacity:0;transform:translateY(8px)}24%,88%{opacity:1;transform:none}94%,100%{opacity:0;transform:translateY(8px)}}
@media (max-width:980px){.hero-mock{justify-self:stretch;max-width:none}.mock-toast{right:8px;bottom:-14px}}
@media (max-width:480px){.mock-steps span{font-size:9.5px;padding:8px 2px}.mock-kv{grid-template-columns:1fr}.mock-toast{display:none}}
/* dải công nghệ dưới hero */
.techbar{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg-2);padding:18px 0}
.techbar .wrap{display:flex;flex-wrap:wrap;align-items:center;gap:10px calc(30px*var(--fs));font-family:var(--f-mono);font-size:calc(12.5px*var(--fs));letter-spacing:.08em;text-transform:uppercase;color:var(--dim)}
.techbar .lbl{color:var(--muted);letter-spacing:.14em;font-size:calc(11px*var(--fs))}
.techbar span:not(.lbl){display:inline-flex;align-items:center;gap:8px;color:var(--muted)}
.techbar span:not(.lbl)::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--accent)}
@media (max-width:640px){.techbar .wrap{flex-wrap:nowrap;overflow-x:auto;gap:22px;scrollbar-width:none;-webkit-mask-image:linear-gradient(90deg,#000 88%,transparent);mask-image:linear-gradient(90deg,#000 88%,transparent)}.techbar span{white-space:nowrap}}

/* ── Bento: ô to nhỏ không đều ── */
.bento{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));grid-auto-rows:minmax(150px,auto);gap:calc(16px*var(--fs))}
.bento .b-lg{grid-column:span 2;grid-row:span 2}
.bento .b-wide{grid-column:span 2}
.bento .card .inner{gap:12px}
.bento .b-lg .inner{gap:16px}
.bento .b-lg h3{font-size:calc(26px*var(--fs))}
.bento .b-lg p{font-size:calc(16.5px*var(--fs));max-width:44ch}
.modgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:auto;padding-top:10px}
.modgrid span{font:500 11.5px var(--f-mono);letter-spacing:.04em;text-align:center;padding:9px 6px;border-radius:9px;border:1px solid var(--line);background:var(--surface);color:var(--muted);transition:all .25s}
.modgrid span.hot{color:var(--accent-2);border-color:var(--accent-line);background:var(--accent-soft)}
.bento .card:hover .modgrid span{border-color:var(--line-2);color:var(--text)}
@media (max-width:1000px){.bento{grid-template-columns:repeat(2,minmax(0,1fr))}.bento .b-lg{grid-column:span 2;grid-row:auto}}
@media (max-width:560px){.bento{grid-template-columns:1fr}.bento .b-lg,.bento .b-wide{grid-column:auto}.modgrid{grid-template-columns:repeat(2,1fr)}}

/* ── Hình 3D theo trang (SVG) ── */
.viz{position:relative;isolation:isolate;width:100%;max-width:calc(540px*var(--fs));justify-self:end}
.viz svg{width:100%;height:auto;display:block;overflow:visible}
@media (max-width:980px){.viz{justify-self:center;max-width:400px}}
.viz .ln{fill:none;stroke:var(--viz-ln);stroke-width:1.2}
.viz .ln.dim{stroke:var(--viz-ln-dim)}
.viz .ln.dash{stroke-dasharray:4 7;animation:dash 16s linear infinite}
.viz .ln.hot{stroke:var(--viz-hot);stroke-width:1.5}
.viz .bx{fill:var(--viz-bx);stroke:var(--viz-bx-s);stroke-width:1.2}
.viz .bx.hi{fill:var(--viz-bx-hi);stroke:var(--viz-bx-hi-s)}
.viz .fc{fill:var(--surface-2);stroke:var(--viz-bx-s);stroke-width:1}
.viz .fc.l{fill:var(--surface)}
.viz .fc.r{fill:rgba(0,0,0,.3)}
.viz .dot{fill:var(--viz-dot)}
.viz .dot.dim{fill:var(--viz-dot-dim)}
.viz text{font-family:var(--f-mono);font-size:11.5px;fill:var(--viz-text);letter-spacing:.06em;text-anchor:middle}
.viz text.big{font-size:19px;font-weight:700;letter-spacing:.12em;fill:var(--hi)}
.viz text.cap{font-size:10px;fill:var(--viz-cap);letter-spacing:.2em}
.viz a{cursor:pointer}
.viz a:hover .bx{fill:var(--accent-soft);stroke:var(--accent-2)}
.viz.paused *{animation-play-state:paused!important}
.spin{transform-box:view-box;transform-origin:260px 260px}
.orbit-a{animation:spin 90s linear infinite}.orbit-a .unspin{animation:spin 90s linear infinite reverse}
.orbit-b{animation:spin 140s linear infinite reverse}.orbit-b .unspin{animation:spin 140s linear infinite}
.unspin{transform-box:fill-box;transform-origin:center}
.float{animation:float 7s ease-in-out infinite}
.pulse{transform-box:fill-box;transform-origin:center;animation:pulse 3.2s ease-in-out infinite}
.sweep{animation:spin 9s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes float{50%{transform:translateY(-9px)}}
@keyframes pulse{50%{transform:scale(1.35);opacity:.45}}
@keyframes dash{to{stroke-dashoffset:-220}}

/* ── Dòng chảy: các bước nối tiếp nhau ── */
.flow{display:grid;grid-template-columns:repeat(var(--n,5),minmax(0,1fr));gap:0;counter-reset:st}
.flow .step{position:relative;display:flex;flex-direction:column;gap:8px;padding:calc(20px*var(--fs)) calc(18px*var(--fs));margin-right:34px;border-radius:calc(var(--r)*.85);border:1px solid var(--line);background:var(--surface);transition:border-color .3s,background-color .3s}
.flow .step:last-child{margin-right:0}
.flow .step::after{content:"";position:absolute;right:-22px;top:50%;width:11px;height:11px;margin-top:-6px;border-top:1.8px solid var(--dim);border-right:1.8px solid var(--dim);transform:rotate(45deg)}
.flow .step:last-child::after{display:none}
.flow .step b{font-family:var(--f-head);font-size:calc(18px*var(--fs));letter-spacing:-.01em;color:var(--hi)}
.flow .step small{font-size:calc(14px*var(--fs));color:var(--muted);line-height:1.5}
.flow .step .num{margin-bottom:2px}
.flow.run .step{animation:lit 7s ease-in-out infinite;animation-delay:calc(var(--i,0)*.7s)}
@keyframes lit{0%,16%,100%{border-color:var(--line);box-shadow:none}6%,10%{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent-line),0 0 36px -6px var(--accent)}}
@media (max-width:1100px){.flow.wrap-md{grid-template-columns:repeat(3,minmax(0,1fr));row-gap:22px}.flow.wrap-md .step:nth-child(3n){margin-right:0}.flow.wrap-md .step:nth-child(3n)::after{display:none}}
@media (max-width:860px){
  .flow,.flow.wrap-md{grid-template-columns:1fr;row-gap:30px}
  .flow .step,.flow.wrap-md .step{margin-right:0}
  .flow .step::after,.flow.wrap-md .step:nth-child(3n)::after{display:block;right:auto;left:50%;top:auto;bottom:-21px;margin:0 0 0 -6px;transform:rotate(135deg)}
  .flow .step:last-child::after{display:none}
}
.flow.v{grid-template-columns:1fr;row-gap:30px;max-width:420px}
.flow.v .step{margin-right:0;flex-direction:row;align-items:center;gap:14px;padding:16px 20px}
.flow.v .step .num{margin:0}
.flow.v .step::after{right:auto;left:40px;top:auto;bottom:-21px;margin:0;transform:rotate(135deg)}
.flow.v .step:last-child::after{display:none}
.flow.v .step b{font-size:calc(17px*var(--fs))}
.pair{display:flex;align-items:center;justify-content:space-between;gap:12px;font-family:var(--f-mono);font-size:calc(14px*var(--fs));padding:14px 18px}
.pair i{font-style:normal;color:var(--accent-2)}

/* ── Sơ đồ tầng ── */
.layers{display:flex;flex-direction:column;align-items:center;gap:0;max-width:520px;margin:0 auto}
.layers .lay{width:100%;text-align:center;padding:16px 18px}
.layers .lay+.lay{margin-top:26px}
.layers .lay+.lay::before{content:"";position:absolute;left:50%;top:-26px;height:26px;border-left:1.5px dashed var(--line-3)}
.layers .lay b{font-family:var(--f-mono);font-size:calc(14px*var(--fs));letter-spacing:.06em;color:var(--hi)}
.layers .lay small{display:block;color:var(--muted)}
.layers-note{text-align:center;font-family:var(--f-head);font-weight:600;font-size:calc(19px*var(--fs));margin-top:28px;color:var(--hi)}

/* ── FAQ ── */
.faq{display:grid;grid-template-columns:1fr 2fr;gap:48px}
@media (max-width:900px){.faq{grid-template-columns:1fr;gap:28px}}
details{border-top:1px solid var(--line)}
details:last-child{border-bottom:1px solid var(--line)}
summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:20px;padding:20px 0;font-family:var(--f-head);font-weight:600;font-size:calc(18.5px*var(--fs));color:var(--hi)}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";font-size:calc(26px*var(--fs));color:var(--accent-2);transition:transform .25s;flex:none;font-weight:400}
details[open] summary::after{transform:rotate(45deg)}
details p{padding:0 0 22px;color:var(--muted);max-width:64ch}

/* ── CTA cuối ── */
.cta-end{text-align:center;display:flex;flex-direction:column;align-items:center;gap:24px;padding:clamp(72px,10vw,128px) 0;position:relative}
.cta-end::before{content:"";position:absolute;left:50%;top:50%;width:min(900px,100%);height:70%;transform:translate(-50%,-50%);z-index:-1;pointer-events:none;background:radial-gradient(closest-side,var(--accent-soft),transparent)}
.cta-end h2{max-width:820px}
.cta-end .lead{max-width:620px}

/* ── Footer ── */
footer.foot{background:var(--foot-bg);border-top:1px solid var(--line);color:var(--muted);font-size:calc(14.5px*var(--fs))}
.fgrid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:36px;padding:60px 0 38px}
@media (max-width:900px){.fgrid{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.fgrid{grid-template-columns:1fr}}
.fcol{display:flex;flex-direction:column;gap:10px}
.fcol b{color:var(--hi);font-family:var(--f-head);letter-spacing:.02em}
.fcol a:hover{color:var(--hi)}
.fcol .logo{margin-bottom:6px}
.fbot{border-top:1px solid var(--line);padding:22px 0 34px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:calc(13px*var(--fs));color:var(--dim)}

/* ── Lab ── */
.lab-meta{display:grid;grid-template-columns:auto 1fr;gap:6px 16px;font-size:calc(14.5px*var(--fs));margin-top:4px}
.lab-meta dt{font-family:var(--f-mono);font-size:calc(12px*var(--fs));letter-spacing:.08em;text-transform:uppercase;color:var(--dim);padding-top:3px}
.lab-meta dd{margin:0;color:var(--text)}
.chat{display:flex;flex-direction:column;gap:12px;font-size:calc(15px*var(--fs))}
.chat .q,.chat .a{padding:12px 16px;border-radius:14px;max-width:88%}
.chat .q{align-self:flex-end;background:var(--accent-soft);border:1px solid var(--accent-line);color:var(--text)}
.chat .a{align-self:flex-start;background:var(--surface);border:1px solid var(--line);font-family:var(--f-mono);font-size:calc(13px*var(--fs));color:var(--muted)}
.pipeline{display:flex;gap:12px;overflow-x:auto;padding:4px 2px 12px}
.pipeline .col{flex:1 0 150px;border:1px solid var(--line);border-radius:14px;padding:14px;background:var(--surface);min-height:130px}
.pipeline .col h4{font-family:var(--f-mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--dim);margin-bottom:10px;font-weight:500}
.pipeline .lead-chip{display:block;padding:8px 10px;border-radius:9px;background:var(--surface-2);border:1px solid var(--line-2);font-size:13px;margin-bottom:8px;color:var(--text);animation:leadmove 12s ease-in-out infinite;animation-delay:calc(var(--d,0)*1s)}
@keyframes leadmove{0%,10%{opacity:1;transform:none}50%{opacity:.55;transform:translateX(6px)}90%,100%{opacity:1;transform:none}}
.term{border-radius:var(--r);overflow:hidden;background:var(--bg-2);border:1px solid var(--line-2)}
.term .bar{display:flex;gap:8px;padding:12px 14px;border-bottom:1px solid var(--line)}
.term .bar i{width:10px;height:10px;border-radius:50%;background:var(--line-3)}
.term pre{margin:0;padding:20px 22px 24px;font-family:var(--f-mono);font-size:calc(13.5px*var(--fs));line-height:1.9;color:var(--text);white-space:pre-wrap}
.term .d{color:var(--dim)}.term .ok{color:var(--ok);font-weight:600}

/* ── Kiến thức & bài viết ── */
.kn-cat{scroll-margin-top:96px}
.kn-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column}
.kn-list li a{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:13px 0;border-top:1px solid var(--line);color:var(--text);transition:padding .25s,color .25s}
.kn-list li:first-child a{border-top:0}
.kn-list li a::after{content:"→";color:var(--dim);transition:color .25s}
.kn-list li a:hover{padding-left:6px;color:var(--accent-2)}
.kn-list li a:hover::after{color:var(--accent-2)}
.kn-list .soon{color:var(--dim)}
.kn-list .soon::after{content:"sắp có";font-family:var(--f-mono);font-size:12px;letter-spacing:.06em}
.article{display:grid;grid-template-columns:220px minmax(0,1fr) 260px;gap:44px;align-items:start}
@media (max-width:1100px){.article{grid-template-columns:minmax(0,1fr) 260px}.article .toc{display:none}}
@media (max-width:860px){.article{grid-template-columns:1fr}}
.article .toc,.article .rel{position:sticky;top:96px;display:flex;flex-direction:column;gap:10px;font-size:calc(14.5px*var(--fs))}
.article .toc b,.article .rel b{font-family:var(--f-mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--dim);font-weight:500}
.article .toc a,.article .rel a{color:var(--muted);padding:4px 0}
.article .toc a:hover,.article .rel a:hover,.article .toc a.on{color:var(--accent-2)}
.prose.glass{padding:clamp(24px,3.4vw,44px);border-radius:calc(var(--r)*1.5);border:1px solid var(--line);background:var(--surface);box-shadow:var(--shadow)}
.prose{display:flex;flex-direction:column;gap:20px;font-size:calc(18px*var(--fs));line-height:1.78}
.prose>p,.prose>ul{max-width:68ch}
.prose h2{font-size:calc(clamp(26px,3vw,36px)*var(--fs));margin-top:20px;scroll-margin-top:96px}
.prose p,.prose li{color:var(--text)}
.prose ul{margin:0;padding-left:22px;display:flex;flex-direction:column;gap:8px}
.tldr{border-left:3px solid var(--accent)}
.tldr .eyebrow{display:block;margin-bottom:8px}
.dtable{width:100%;border-collapse:collapse;font-size:calc(15.5px*var(--fs))}
.dtable th,.dtable td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:top}
.dtable th{font-family:var(--f-mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--dim);font-weight:500}
.scroll-x{overflow-x:auto}
/* thanh tiến độ đọc (bài viết) */
.readbar{position:fixed;left:0;top:0;height:2px;width:100%;z-index:40;transform-origin:left;transform:scaleX(0);background:var(--accent);pointer-events:none}

/* ── Dự án / trước → sau ── */
.ba{display:grid;grid-template-columns:1fr auto 1fr;gap:24px;align-items:stretch}
@media (max-width:860px){.ba{grid-template-columns:1fr}.ba .arrow{transform:rotate(90deg);justify-self:center}}
.ba .arrow{align-self:center;font-family:var(--f-head);font-size:38px;color:var(--accent-2)}
.tpl{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
@media (max-width:1000px){.tpl{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:640px){.tpl{grid-template-columns:1fr}}
.notice{border:1px dashed var(--line-3);border-radius:var(--r);padding:20px 24px;background:var(--surface);color:var(--text)}
.notice b{color:var(--hi)}

/* ── Biểu mẫu ── */
form.f{display:flex;flex-direction:column;gap:18px}
.fld{display:flex;flex-direction:column;gap:7px}
.fld label,.fld .lbl{font-family:var(--f-mono);font-size:calc(12px*var(--fs));letter-spacing:.12em;text-transform:uppercase;color:var(--dim)}
.fld input[type=text],.fld input[type=email],.fld input[type=tel],.fld textarea,.fld select{width:100%;font:inherit;font-size:calc(16px*var(--fs));color:var(--text);padding:13px 15px;border-radius:11px;border:1px solid var(--line-2);background:var(--surface);transition:border-color .2s,box-shadow .2s}
.fld textarea{min-height:140px;resize:vertical}
.fld input::placeholder,.fld textarea::placeholder{color:var(--dim)}
.fld input:focus,.fld textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.opts{display:flex;flex-wrap:wrap;gap:10px}
.opts label{position:relative;cursor:pointer}
.opts input{position:absolute;opacity:0;pointer-events:none}
.opts span{display:inline-block;padding:9px 16px;border-radius:999px;border:1px solid var(--line-2);background:var(--surface);font-family:var(--f-body);font-size:calc(15px*var(--fs));letter-spacing:0;text-transform:none;color:var(--text);transition:background-color .2s,border-color .2s,color .2s}
.opts input:checked+span{background:var(--accent);color:var(--on-accent);border-color:var(--accent);font-weight:700}
.opts input:focus-visible+span{outline:2px solid var(--accent);outline-offset:2px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media (max-width:640px){.row2{grid-template-columns:1fr}}
.contact-side{display:flex;flex-direction:column;gap:22px}
.contact-side dl{margin:0;display:grid;grid-template-columns:auto 1fr;gap:10px 18px}
.contact-side dt{font-family:var(--f-mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--dim);padding-top:4px}
.contact-side dd{margin:0;color:var(--text)}
.form-note{font-size:calc(14px*var(--fs));color:var(--muted)}
.form-ok{padding:14px 18px;border-radius:12px;border:1px solid var(--accent-line);background:var(--accent-soft)}
.consent{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--muted);cursor:pointer}
.consent input{margin-top:4px;accent-color:var(--accent);width:17px;height:17px;flex:none}

/* ── Odoo Check ── */
.quiz{max-width:820px;margin:0 auto}
.qbar{height:3px;background:var(--line-2);border-radius:3px;overflow:hidden;margin-bottom:22px}
.qbar i{display:block;height:100%;width:0;background:var(--accent);transition:width .4s}
.qhead{display:flex;justify-content:space-between;font-family:var(--f-mono);font-size:12.5px;letter-spacing:.1em;color:var(--dim);margin-bottom:12px}
.qq{font-family:var(--f-head);font-size:calc(clamp(22px,2.6vw,30px)*var(--fs));font-weight:600;letter-spacing:-.02em;line-height:1.2;margin-bottom:22px;color:var(--hi)}
.qopts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
@media (max-width:640px){.qopts{grid-template-columns:1fr}}
.qopt{text-align:left;font:inherit;font-size:calc(16.5px*var(--fs));color:var(--text);padding:16px 18px;border-radius:13px;border:1px solid var(--line-2);background:var(--surface);cursor:pointer;transition:transform .2s,border-color .2s,background-color .2s}
.qopt:hover{transform:translateY(-2px);border-color:var(--accent);background:var(--accent-soft)}
.qnav{display:flex;justify-content:space-between;margin-top:22px}
.qnav button{background:none;border:0;color:var(--muted);font:inherit;cursor:pointer;padding:8px 0}
.qnav button:hover{color:var(--hi)}
.snap{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
@media (max-width:900px){.snap{grid-template-columns:repeat(2,minmax(0,1fr))}}
.snap .cell{display:flex;flex-direction:column;gap:10px}
.snap .cell .k{font-family:var(--f-mono);font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--dim)}
.snap .cell .v{font-family:var(--f-head);font-size:calc(21px*var(--fs));font-weight:600;color:var(--hi)}
.meter{height:5px;border-radius:5px;background:var(--line-2);overflow:hidden}
.meter i{display:block;height:100%;background:var(--accent);border-radius:5px}
.level{display:flex;gap:10px;align-items:baseline;flex-wrap:wrap}
.level .lv{font-family:var(--f-mono);font-size:13px;letter-spacing:.14em;color:var(--accent-2);text-transform:uppercase}

/* ── Hiện dần khi cuộn tới (CSS thuần, Chrome/Edge; trình duyệt khác thấy ngay) ── */
.focus{will-change:opacity,transform}
@supports (animation-timeline: view()){
  .focus{animation:focusIn linear both;animation-timeline:view();animation-range:entry 0% entry 60%}
  @keyframes focusIn{from{opacity:var(--f-op);transform:translateY(var(--f-shift))}to{opacity:1;transform:none}}
}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
@media (prefers-reduced-motion:reduce){
  .focus,.flow.run .step,.pipeline .lead-chip,.spin,.orbit-a,.orbit-b,.unspin,.float,.pulse,.sweep,.viz .ln.dash,.hero-text>*,.hero-mock,.mock-toast,.mock-steps span{animation:none!important}
  .focus{opacity:1!important;transform:none!important}
  .btn,.card{transition:none}
}

/* ── Chuỗi ngành ── */
.chain{display:flex;flex-wrap:wrap;gap:10px 8px;align-items:center}
.chain span{font-family:var(--f-mono);font-size:calc(13.5px*var(--fs));padding:8px 14px;border-radius:999px;border:1px solid var(--line-2);background:var(--surface-2);color:var(--text)}
.chain i{font-style:normal;color:var(--accent-2)}
.ind{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,6fr);gap:40px;align-items:center;padding:clamp(24px,3.4vw,40px)}
@media (max-width:900px){.ind{grid-template-columns:1fr;gap:22px}}
.ind .stack{gap:14px}
.ind+.ind{margin-top:22px}
.flat .chain{gap:6px}
.flat .chain span{padding:5px 10px;font-size:calc(12px*var(--fs))}
.split.flow-split{grid-template-columns:minmax(0,4fr) minmax(0,7fr);align-items:start}
@media (max-width:900px){.split.flow-split{grid-template-columns:1fr}.flow-view{position:static}}
section[id]{scroll-margin-top:calc(var(--hdr) + 60px)}

/* ── Bảng tinh chỉnh nền 3D (?tune=1) ── */
.t3-btn{position:fixed;right:18px;bottom:calc(18px + env(safe-area-inset-bottom,0px));z-index:50;display:flex;gap:8px;align-items:center;background:var(--accent);color:#fff;border:0;border-radius:999px;padding:11px 17px;font:600 14px var(--f-head);cursor:pointer;box-shadow:0 12px 30px -10px rgba(0,0,0,.7)}
.t3-btn svg{width:16px;height:16px;stroke:#fff;fill:none;stroke-width:1.8;stroke-linecap:round}
.t3{position:fixed;right:18px;bottom:calc(70px + env(safe-area-inset-bottom,0px));z-index:50;width:310px;max-width:calc(100vw - 36px);max-height:calc(100vh - 110px);overflow-y:auto;overscroll-behavior:contain;display:none;flex-direction:column;gap:14px;padding:18px;border-radius:16px;
  background:var(--bg-3);border:1px solid var(--line-2);color:var(--text);font-size:14px;box-shadow:var(--shadow-lg)}
.t3.open{display:flex}
.t3 h4{font:700 15px var(--f-head);margin:0}
.t3-l{display:flex;flex-direction:column;gap:6px;font:500 11.5px var(--f-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--dim)}
.t3-v{float:right;color:var(--hi)}
.t3 input[type=range]{width:100%;accent-color:var(--accent)}
.t3 select{width:100%;padding:8px 10px;border-radius:8px;border:1px solid var(--line-2);background:var(--surface);color:var(--text);font:14px var(--f-body);text-transform:none;letter-spacing:0}
.t3 select option{color:#000}
.t3-row{display:flex;gap:14px;align-items:center;justify-content:space-between;flex-wrap:wrap}
.t3-row label{display:flex;gap:8px;align-items:center;font:600 14px var(--f-body);cursor:pointer}
.t3-note{font-size:12px;color:var(--dim)}
.t3-reset{background:none;border:1px solid var(--line-2);border-radius:8px;padding:7px 12px;color:var(--text);font:600 13px var(--f-body);cursor:pointer}
.t3-reset:hover{border-color:var(--hi)}

/* ── Nền tĩnh dùng chung: lưới chấm rất mờ góc trên phải ── */
body::before{content:"";position:fixed;inset:0;z-index:0;pointer-events:none;background-image:radial-gradient(var(--line-2) 1px,transparent 1.3px);background-size:28px 28px;
  -webkit-mask-image:radial-gradient(1000px 700px at 100% 0%,#000 0%,transparent 70%);mask-image:radial-gradient(1000px 700px at 100% 0%,#000 0%,transparent 70%);opacity:.6}

/* Liên kết bỏ qua (bàn phím) */
.skip{position:absolute;left:12px;top:-60px;z-index:60;background:var(--accent);color:#fff;padding:10px 14px;border-radius:8px;font-weight:700}
.skip:focus{top:12px}
.tmp{font-style:normal;color:var(--dim);font-size:.85em}

/* ── Khung giữ chỗ ẢNH / VIDEO thật ── */
.shot,.vid{margin:0;border-radius:14px;overflow:hidden;border:1px solid var(--line-2);background:var(--bg-2)}
.shot-bar{display:flex;gap:7px;align-items:center;padding:10px 12px;border-bottom:1px solid var(--line)}
.shot-bar i{width:9px;height:9px;border-radius:50%;background:var(--line-3)}
.shot-bar span{margin-left:10px;font:500 11.5px var(--f-mono);color:var(--dim);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.shot-body,.vid-body{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;text-align:center;padding:22px;
  background:repeating-linear-gradient(135deg,var(--line) 0 12px,transparent 12px 24px)}
.shot-body{aspect-ratio:16/10}
.vid-body{aspect-ratio:16/9}
.shot-body b,.vid-body b{font-family:var(--f-head);font-size:calc(17px*var(--fs));color:var(--hi)}
.shot-body small,.vid-body small{font-size:13px;color:var(--muted);max-width:34ch;line-height:1.5}
.shot figcaption{padding:10px 14px;font-size:13.5px;color:var(--muted);border-top:1px solid var(--line)}
.ph-tag{font:500 10.5px var(--f-mono);letter-spacing:.16em;border:1px dashed var(--line-3);padding:3px 9px;border-radius:999px;color:var(--muted)}
.play{width:58px;height:58px;border-radius:50%;border:1.5px solid var(--accent-2);position:relative;margin-bottom:6px;background:var(--accent-soft)}
.play::after{content:"";position:absolute;left:23px;top:18px;border-left:16px solid var(--accent-2);border-top:11px solid transparent;border-bottom:11px solid transparent}
.draft{display:inline-block;font:500 10.5px var(--f-mono);letter-spacing:.12em;text-transform:uppercase;color:var(--dim);border:1px dashed var(--line-2);border-radius:999px;padding:3px 10px;vertical-align:middle}
.ph{color:var(--muted);background:var(--surface-2);border:1px dashed var(--line-2);border-radius:6px;padding:0 6px;font-family:var(--f-mono);font-size:.88em}

/* dải ảnh cuộn ngang */
.strip{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(300px,1fr);gap:18px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:10px}
.strip>*{scroll-snap-align:start}
.strip .step-no{font:500 12px var(--f-mono);letter-spacing:.12em;color:var(--accent-2);margin-bottom:10px;display:block}
@media (max-width:640px){.strip{grid-auto-columns:82%}}

/* ── Trạng thái Lab ── */
.status{display:inline-flex;align-items:center;gap:7px;font:500 11.5px var(--f-mono);letter-spacing:.08em;text-transform:uppercase;padding:4px 11px;border-radius:999px;border:1px solid var(--line-2);color:var(--text);align-self:flex-start}
.status::before{content:"";width:7px;height:7px;border-radius:50%;background:currentColor}
.status.idea{border-style:dashed;color:var(--muted)}
.status.idea::before{background:transparent;border:1px solid currentColor}
.status.wip{color:var(--accent-2);border-color:var(--accent-line)}
.status.wip::before{animation:pulse 2.4s ease-in-out infinite}
.status.ok{background:var(--ok);color:#fff;border-color:var(--ok)}
.lab-top{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.lab-date{font:500 12px var(--f-mono);color:var(--dim)}

/* ── Dịch vụ: thanh điều hướng dính + khung 4 ô ── */
.subnav{position:sticky;top:var(--hdr);z-index:20;background:var(--hdr-bg);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);transition:top .25s}
.subnav .wrap{display:flex;gap:6px;overflow-x:auto;padding:10px 0;scrollbar-width:none}
.subnav a{flex:none;padding:8px 14px;border-radius:999px;font:600 14px var(--f-body);color:var(--muted);border:1px solid transparent}
.subnav a:hover,.subnav a.on{color:var(--hi);border-color:var(--line-2);background:var(--surface-2)}
.svc{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin-top:8px}
@media (max-width:1000px){.svc{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:560px){.svc{grid-template-columns:1fr}}
.svc .card{padding:22px}
.svc .card .eyebrow{display:block;margin-bottom:10px}
.svc ul.tick{gap:7px;font-size:calc(15.5px*var(--fs))}
.deliver{border:1px solid var(--line-2);border-radius:var(--r);padding:18px 22px;display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px 26px;margin-top:26px;background:var(--surface)}
.deliver b{font-family:var(--f-head);display:block;margin-bottom:2px;color:var(--hi)}
.deliver span{font-size:14.5px;color:var(--muted)}

/* ── Người sáng lập ── */
.founder{display:grid;grid-template-columns:112px minmax(0,1fr);gap:26px;align-items:center}
@media (max-width:560px){.founder{grid-template-columns:1fr}}
.avatar{width:112px;height:112px;border-radius:22px;border:1px dashed var(--line-3);display:grid;place-items:center;text-align:center;font:500 10.5px var(--f-mono);letter-spacing:.1em;color:var(--muted);background:repeating-linear-gradient(135deg,var(--line) 0 10px,transparent 10px 20px)}
.founder ul{margin:10px 0 0;padding-left:18px;color:var(--muted);display:flex;flex-direction:column;gap:4px}

/* ── Odoo ERP: dòng chảy bấm được + ảnh ── */
.flow.v .step{cursor:pointer;text-align:left;font:inherit;color:inherit;width:100%}
.flow.v .step[aria-pressed="true"]{border-color:var(--accent);background:var(--accent-soft)}
.flow-view{position:sticky;top:calc(var(--hdr) + 24px)}
.flow-view p{margin-top:12px;color:var(--muted);font-size:15px}
.gives{display:block;font-size:13px;color:var(--muted);margin-top:2px}
.gives::before{content:"Bạn nhận được: ";color:var(--dim)}

/* ── Kiến thức: bộ lọc + thẻ bài ── */
.filters{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:26px}
.filters button{font:600 14px var(--f-body);padding:8px 15px;border-radius:999px;border:1px solid var(--line-2);background:transparent;color:var(--text);cursor:pointer;transition:all .2s}
.filters button:hover{border-color:var(--line-3)}
.filters button.on{background:var(--accent);color:var(--on-accent);border-color:var(--accent)}
.post .meta{font:500 12px var(--f-mono);letter-spacing:.06em;color:var(--dim);display:flex;flex-wrap:wrap;gap:6px 14px}
.post .meta span:first-child{color:var(--accent-2)}
.post h3{font-size:calc(22px*var(--fs))}
.writing{display:flex;flex-direction:column;gap:6px;margin:0;padding:0;list-style:none}
.writing li{color:var(--muted);padding:8px 0;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:12px}
.writing li span{font:500 11px var(--f-mono);letter-spacing:.08em;color:var(--dim);flex:none}
.byline{display:flex;gap:14px;align-items:center;flex-wrap:wrap;font-size:14.5px;color:var(--muted)}
.byline .avatar{width:44px;height:44px;border-radius:12px;font-size:8px}
.toc-m{display:none;border:1px solid var(--line-2);border-radius:12px;padding:4px 16px}
.toc-m summary{font-size:16px;padding:12px 0}
.toc-m a{display:block;padding:6px 0;color:var(--muted)}
@media (max-width:1100px){.toc-m{display:block}}

/* ── bản 4 (11/10): bảng giá, cách làm việc, AI–người duyệt, tin tức ── */
.price{font-family:var(--f-head);font-size:calc(17px*var(--fs));color:var(--muted);margin:2px 0 4px}
.price b{font-size:calc(28px*var(--fs));color:var(--hi);letter-spacing:-.01em}
.card .tag{align-self:flex-start}
.avatar.mono-mark{border-style:solid;background:var(--surface);font:700 30px var(--f-head);letter-spacing:.02em;color:var(--hi)}
.prose blockquote{margin:0;padding:12px 18px;border-left:3px solid var(--accent);background:var(--surface);border-radius:0 var(--r) var(--r) 0}
.steps{list-style:none;margin:0;padding:0;display:grid;gap:12px;counter-reset:b}
.steps li{display:grid;grid-template-columns:52px minmax(0,1fr);gap:16px;align-items:start;padding:16px 18px;border:1px solid var(--line);border-radius:var(--r);background:var(--surface)}
.steps li::before{counter-increment:b;content:counter(b,decimal-leading-zero);font:500 13px var(--f-mono);color:var(--accent-2);letter-spacing:.08em;padding-top:4px}
.steps b{color:var(--hi)}
.steps small{display:block;color:var(--muted);margin-top:4px;font-size:calc(14.5px*var(--fs))}
.duyet{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.duyet>div{padding:22px 22px 24px;position:relative;background:var(--surface)}
.duyet>div+div{border-left:1px solid var(--line)}
.duyet>div.nguoi{background:var(--accent-soft,var(--surface));box-shadow:inset 0 0 0 1px var(--accent-line)}
.duyet .ai-who{font:500 12px var(--f-mono);letter-spacing:.12em;text-transform:uppercase;color:var(--dim)}
.duyet .nguoi .ai-who{color:var(--accent-2)}
.duyet h3{margin:8px 0 6px;font-size:calc(21px*var(--fs))}
.duyet p{color:var(--muted);font-size:calc(15px*var(--fs))}
@media (max-width:760px){.duyet{grid-template-columns:1fr}.duyet>div+div{border-left:0;border-top:1px solid var(--line)}}
.vidu{margin-top:18px}
.vidu td:nth-child(3){color:var(--accent-2);font-weight:600}
.legal-dl{display:grid;grid-template-columns:minmax(150px,220px) minmax(0,1fr);gap:10px 22px;margin:0}
.legal-dl dt{font:500 12.5px var(--f-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--dim);padding-top:3px}
.legal-dl dd{margin:0;color:var(--text)}
@media (max-width:560px){.legal-dl{grid-template-columns:1fr;gap:2px 0}.legal-dl dd{margin-bottom:10px}}
.menu a{white-space:nowrap}
@media (max-width:1320px){.menu{gap:0}.menu a{padding:9px 10px}}
.avatar.mono-mark img{width:56px;height:56px;filter:invert(1)}
:root[data-theme="light"] .avatar.mono-mark img{filter:none}