/* NewbieNeuro — trang chủ. Token và số đo lấy từ thiết kế "NewbieNeuro — Trang chủ"
   (artboard desktop 1400px và điện thoại 390px). */

:root {
  --bg:#E7EAE7; --panel:#F1F3F0; --sunk:#DBE0DC; --rowHover:#EFF2EF;
  --ink:#12191A; --ink2:#3C4745; --meta:#5B6764;
  --hair:#BFC7C1; --strong:#12191A; --dash:#8E9A94;
  --core:#A8114F; --coreH:#78093A; --coreOn:#FFFFFF; --coreBg:#F3DCE6;
  --pen:#1B6655; --penOn:#FFFFFF;
  --inv:#12191A; --invInk:#E7EAE7; --invInk2:#C3CCC8; --invMeta:#9DA9A4; --invHair:#3A4548; --invCore:#FF7FAE; --invPen:#6ED3B4;
  --room:#0C1214; --roomCard:#151D20; --roomPoster:#0A0F11; --roomHair:#2E3A3D;
  --roomInk:#F1F3F0; --roomInk2:#DCE3DF; --roomInk3:#A6B2AD; --roomMeta:#7E8A86; --roomPen:#6ED3B4; --roomCore:#FF7FAE;
  --okFg:#12500F; --okBg:#CFE3CB; --warnFg:#7A4A00; --warnBg:#F0E1C2;
  --shadow:rgba(12,18,20,0.16);

  --gutter:72px;
  --display:'Archivo', system-ui, sans-serif;
  --body:'Be Vietnam Pro', system-ui, sans-serif;
  --mono:'IBM Plex Mono', ui-monospace, monospace;
  color-scheme: light;
}
:root[data-theme="dark"] {
  --bg:#12191B; --panel:#1B2326; --sunk:#283236; --rowHover:#222B2F;
  --ink:#E3E9E5; --ink2:#B2BDB8; --meta:#8B9793;
  --hair:#2F3A3D; --strong:#5A686D; --dash:#4A585C;
  --core:#FF74A8; --coreH:#FFA3C6; --coreOn:#24050F; --coreBg:#3A1024;
  --pen:#63CCAB; --penOn:#05261D;
  --inv:#28343A; --invInk:#EDF2EF; --invInk2:#C0CBC6; --invMeta:#94A09B; --invHair:#435256; --invCore:#FF8FBB; --invPen:#7FDCBE;
  --room:#080C0E; --roomCard:#121A1D; --roomPoster:#05080A; --roomHair:#283235;
  --roomInk:#EDF2EF; --roomInk2:#D5DEDA; --roomInk3:#9FABA7; --roomMeta:#79847F; --roomPen:#6ED3B4; --roomCore:#FF8FBB;
  --okFg:#9FDE97; --okBg:#17321B; --warnFg:#EFC478; --warnBg:#3A2A13;
  --shadow:rgba(0,0,0,0.55);
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 16px; -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: var(--body); -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
a { color: var(--core); text-decoration: none; }
a:hover { color: var(--coreH); text-decoration: underline; }
button { font: inherit; cursor: pointer; }
*:focus-visible { outline: 2px solid var(--core); outline-offset: 3px; }
.room *:focus-visible, .footer *:focus-visible { outline-color: var(--roomPen); }
[hidden] { display: none !important; }
img { max-width: 100%; }

.skip {
  position: absolute; left: 12px; top: -60px; z-index: 50;
  background: var(--inv); color: var(--invInk); padding: 10px 14px; border-radius: 2px;
}
.skip:focus { top: 12px; color: var(--invInk); }

.wrap { padding-left: var(--gutter); padding-right: var(--gutter); max-width: 1400px; margin-left: auto; margin-right: auto; }
.meta { font-size: 13.5px; color: var(--meta); }
.code { font-family: var(--mono); font-size: 12.5px; color: var(--core); white-space: nowrap; }
.soon {
  display: inline-block; font-family: var(--body); font-size: 12px; font-weight: 500; line-height: 1.3;
  color: var(--ink2); background: var(--sunk); border-radius: 2px; padding: 4px 8px; white-space: nowrap;
}
.soon--inv { color: var(--invInk); background: transparent; border: 1px solid var(--invHair); }

/* ---------- headings ---------- */
.h-sec {
  margin: 0 0 20px; font-family: var(--display); font-variation-settings: 'wdth' 112, 'wght' 720;
  font-size: 34px; letter-spacing: -0.022em; line-height: 1.12;
}
.h-sec--md { font-size: 28px; letter-spacing: -0.02em; margin-bottom: 8px; }
.h-sec--room { color: var(--roomInk); }
.h-small {
  margin: 0; font-family: var(--display); font-variation-settings: 'wdth' 112, 'wght' 680;
  font-size: 19px; letter-spacing: -0.01em;
}
.h-card {
  margin: 0; font-family: var(--display); font-variation-settings: 'wdth' 112, 'wght' 700;
  font-size: 22px; letter-spacing: -0.015em;
}
.lead { margin: 0; font-size: 15px; line-height: 1.6; color: var(--ink2); }
.lead--sm { font-size: 14.5px; margin-bottom: 22px; }

/* ---------- header ---------- */
.topbar { height: 4px; background: var(--core); }
.header {
  position: relative; height: 74px; padding: 0 var(--gutter);
  display: flex; align-items: center; gap: 36px;
  border-bottom: 1px solid var(--hair); background: var(--bg);
}
.brand {
  font-family: var(--display); font-variation-settings: 'wdth' 118, 'wght' 750;
  font-size: 22px; letter-spacing: -0.015em; color: var(--ink); flex-shrink: 0;
}
.brand:hover { color: var(--ink); text-decoration: none; }
.nav { display: flex; align-items: center; gap: 24px; flex-grow: 1; min-width: 0; }
.nav a { font-size: 14.5px; font-weight: 500; color: var(--ink2); white-space: nowrap; }
.nav a:hover { color: var(--core); }
.seg { display: flex; border: 1px solid var(--hair); border-radius: 2px; overflow: hidden; flex-shrink: 0; }
.seg button {
  min-height: 44px; padding: 0 13px; display: flex; align-items: center; gap: 7px;
  font-size: 13.5px; font-weight: 500; border: 0; background: transparent; color: var(--ink);
}
.seg button + button { border-left: 1px solid var(--hair); }
.seg button[aria-pressed="true"] { background: var(--inv); color: var(--invInk); }
.cta { display: flex; align-items: center; gap: 10px; padding-left: 22px; border-left: 1px solid var(--hair); flex-shrink: 0; }
.btn { font-size: 14.5px; font-weight: 500; border-radius: 2px; padding: 9px 14px; border: 1px solid var(--hair); white-space: nowrap; }
.btn:hover { text-decoration: none; }
.btn--ghost { color: var(--ink); background: var(--panel); }
.btn--ghost:hover { color: var(--ink); background: var(--sunk); }
.btn--solid { color: var(--invInk); background: var(--inv); border-color: var(--inv); }
.btn--solid:hover { color: var(--invInk); background: var(--ink2); border-color: var(--ink2); }

.mbar { display: none; align-items: center; gap: 8px; margin-left: auto; }
.iconbtn {
  width: 44px; height: 44px; display: flex; align-items: center; justify-content: center;
  background: transparent; border: 1px solid var(--hair); border-radius: 2px; color: var(--ink);
}
.iconbtn:hover { background: var(--sunk); }
.i-sun { display: none; }
[data-theme="dark"] .i-sun { display: block; }
[data-theme="dark"] .i-moon { display: none; }
.burger { flex-direction: column; gap: 5px; padding: 0 10px; align-items: stretch; }
.burger span { display: block; height: 1.5px; background: var(--ink); }
.mmenu {
  position: absolute; left: 0; right: 0; top: 100%; z-index: 30;
  background: var(--panel); border-bottom: 1.5px solid var(--strong); box-shadow: 0 14px 30px var(--shadow);
  display: flex; flex-direction: column; padding: 6px 18px 14px;
}
.mmenu a { padding: 13px 0; border-bottom: 1px solid var(--hair); font-size: 15px; font-weight: 500; color: var(--ink); }
.mmenu a:last-child { border-bottom: 0; }

/* ---------- hero ---------- */
.main { display: flex; flex-direction: column; }
.hero { position: relative; padding-top: 66px; }
.hero-head { display: block; }
.hero-title {
  position: relative; z-index: 1; margin: 0 0 22px; max-width: 880px;
  font-family: var(--display); font-variation-settings: 'wdth' 112, 'wght' 730;
  font-size: 71px; line-height: 1.02; letter-spacing: -0.028em; color: var(--ink);
}
.neuron {
  position: absolute; top: 20px; right: 40px; width: 440px; height: 580px;
  object-fit: cover; object-position: center; opacity: .95; pointer-events: none;
}
[data-theme="dark"] .neuron { opacity: .85; }
.hero-lead { position: relative; margin: 0; font-size: 17.5px; line-height: 1.6; color: var(--ink2); max-width: 640px; }

.search { position: relative; z-index: 5; margin-top: 46px; max-width: 860px; }
.search label { display: block; font-size: 13px; font-weight: 500; color: var(--meta); margin-bottom: 8px; }
.search input {
  width: 100%; height: 62px; padding: 0 20px; font-family: var(--body); font-size: 17px;
  color: var(--ink); background: var(--panel); border: 1.5px solid var(--strong); border-radius: 2px;
}
.search input::placeholder { color: var(--meta); }
.hits {
  position: absolute; left: 0; right: 0; top: 100%; margin-top: 6px; z-index: 20; overflow: hidden;
  background: var(--panel); border: 1.5px solid var(--strong); border-radius: 2px; box-shadow: 0 14px 30px var(--shadow);
}
.hit { display: flex; align-items: center; gap: 16px; padding: 13px 18px; border-bottom: 1px solid var(--hair); color: var(--ink); }
.hit:hover { background: var(--rowHover); }
.hit-code { font-family: var(--mono); font-size: 12.5px; color: var(--core); width: 116px; flex-shrink: 0; }
.hit-title { flex-grow: 1; font-size: 15px; font-weight: 500; }
.hit-sec { font-size: 12.5px; color: var(--meta); white-space: nowrap; }
.hit-p { font-family: var(--mono); font-size: 12px; color: var(--pen); width: 26px; text-align: right; flex-shrink: 0; }
.hit-note { padding: 11px 18px; font-size: 12.5px; color: var(--meta); background: var(--bg); }

.chips-wrap { position: relative; margin-top: 40px; }
.chips-head { display: flex; align-items: baseline; gap: 14px; margin-bottom: 14px; flex-wrap: wrap; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  min-height: 44px; padding: 10px 16px; font-size: 14.5px; font-weight: 500; text-align: left;
  border-radius: 2px; border: 1px solid var(--hair); background: var(--panel); color: var(--ink);
}
.chip:hover { background: var(--sunk); border-color: var(--dash); }
.chip[aria-pressed="true"] { background: var(--core); border-color: var(--core); color: var(--coreOn); }
.chip[aria-pressed="true"]:hover { background: var(--coreH); }

/* ---------- blocks ---------- */
.block { padding-top: 66px; }
.ruled { position: relative; padding-top: 100px; }
.ruled::before {
  content: ""; position: absolute; top: 66px; left: var(--gutter); right: var(--gutter);
  border-top: 2px solid var(--strong);
}

/* ---------- five sections ---------- */
.secgrid { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 20px; }
.secgrid > .sec { grid-column: span 2; }
.secgrid > .sec--dq { grid-column: span 4; }
.sec {
  background: var(--panel); border: 1px solid var(--hair); border-radius: 2px; padding: 26px;
  display: flex; flex-direction: column;
}
.sec--dc { padding: 28px; }
.sec--inv { background: var(--inv); color: var(--invInk); border-color: var(--inv); padding: 30px 32px; }
.sec-kicker { display: flex; align-items: baseline; gap: 12px; margin-bottom: 11px; }
.px { flex-shrink: 0; align-self: center; color: var(--core); }
.sec--inv .px { color: var(--invCore); }
.sec-no { font-family: var(--mono); font-size: 13px; color: var(--core); }
.sec--inv .sec-no { color: var(--invCore); }
.sec-role { font-size: 12.5px; color: var(--meta); }
.sec--inv .sec-role { color: var(--invMeta); }
.sec-name {
  margin: 0 0 10px; font-family: var(--display); font-variation-settings: 'wdth' 112, 'wght' 700;
  font-size: 24px; letter-spacing: -0.018em; line-height: 1.14;
}
.sec-name--lg { font-size: 27px; letter-spacing: -0.02em; line-height: 1.12; }
.sec-name--xl { font-variation-settings: 'wdth' 115, 'wght' 720; font-size: 40px; letter-spacing: -0.025em; color: var(--invInk); }
.sec-desc { margin: 0 0 18px; font-size: 13.8px; line-height: 1.55; color: var(--ink2); }
.sec--inv .sec-desc { font-size: 14.5px; color: var(--invInk2); max-width: 440px; margin-bottom: 22px; }
.tags { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 24px; }
.tags span { font-size: 13px; color: var(--invInk); border: 1px solid var(--invHair); border-radius: 2px; padding: 7px 11px; }
.sec-foot {
  margin-top: auto; display: flex; align-items: flex-end; justify-content: space-between; gap: 16px;
  border-top: 1px solid var(--hair); padding-top: 16px;
}
.sec--inv .sec-foot { border-top-color: var(--invHair); padding-top: 18px; }
.stats { display: flex; gap: 28px; }
.sec--inv .stats { gap: 34px; }
.stat-n { display: block; font-family: var(--mono); font-size: 24px; font-weight: 500; }
.sec--inv .stat-n { font-size: 26px; color: var(--invInk); }
.stat-l { display: block; font-size: 12.5px; color: var(--meta); }
.sec--inv .stat-l { color: var(--invMeta); }

/* ---------- guideline library ---------- */
.filters { display: flex; align-items: center; gap: 8px; margin-bottom: 18px; flex-wrap: wrap; }
.filters > .meta { font-size: 13px; margin-right: 6px; }
.filter-btns { display: flex; flex-wrap: wrap; gap: 8px; }
.filt {
  min-height: 44px; padding: 10px 15px; font-size: 13.5px; font-weight: 500; border-radius: 2px;
  border: 1px solid var(--hair); background: transparent; color: var(--ink);
}
.filt:hover { border-color: var(--strong); }
.filt[aria-pressed="true"] { background: var(--inv); border-color: var(--inv); color: var(--invInk); }

.gl { width: 100%; border-collapse: collapse; background: var(--panel); border: 1px solid var(--hair); }
.gl thead tr { background: var(--inv); color: var(--invInk); }
.gl th { text-align: left; font-size: 12.5px; font-weight: 600; padding: 13px 18px; }
.gl .c-org { width: 180px; } .gl .c-year { width: 80px; } .gl .c-tr { width: 190px; } .gl .c-st { width: 200px; }
.gl tbody tr { border-bottom: 1px solid var(--hair); }
.gl tbody tr:hover { background: var(--rowHover); }
.gl td { padding: 15px 18px; font-size: 14px; color: var(--ink2); vertical-align: top; }
.gl-title { display: block; font-size: 15px; font-weight: 500; color: var(--ink); }
.gl-code { display: block; font-family: var(--mono); font-size: 11.5px; color: var(--meta); margin-top: 4px; }
.gl .yr { font-family: var(--mono); }
.gl .tr { font-size: 13.5px; }
.status { display: inline-block; font-size: 12.5px; font-weight: 500; border-radius: 2px; padding: 5px 9px; }
.status--ok { color: var(--okFg); background: var(--okBg); }
.status--warn { color: var(--warnFg); background: var(--warnBg); }
.fine { margin: 14px 0 0; font-size: 12.5px; line-height: 1.55; color: var(--meta); }
.fine .soon { margin-left: 6px; }

/* ---------- video room ---------- */
.room { margin-top: 72px; background: var(--room); color: var(--roomInk2); padding: 62px 0; }
.room a { color: var(--roomPen); }
.vgroups { display: flex; flex-wrap: wrap; gap: 8px; margin: 14px 0 30px; }
.vgroups span { font-size: 13.5px; color: var(--roomInk2); border: 1px solid var(--roomHair); border-radius: 2px; padding: 9px 13px; }
.vids { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; }
.vid { border: 1px solid var(--roomHair); border-radius: 2px; overflow: hidden; background: var(--roomCard); display: flex; flex-direction: column; }
.vid-stage { position: relative; aspect-ratio: 16 / 9; background: var(--roomPoster); border-bottom: 1px solid var(--roomHair); }
.vid-play {
  position: absolute; inset: 0; width: 100%; height: 100%; border: 0; padding: 0;
  background: var(--roomPoster); color: var(--roomInk2);
  display: flex; align-items: center; justify-content: center; flex-direction: column; gap: 11px;
}
.vid-play:hover { color: var(--roomPen); }
.vid-circle { display: flex; align-items: center; justify-content: center; width: 54px; height: 54px; border: 1.5px solid currentColor; border-radius: 50%; }
.vid-dur { font-family: var(--mono); font-size: 12.5px; }
.vid-stage iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.vid-close {
  position: absolute; right: 8px; top: 8px; z-index: 2; min-height: 32px; font-size: 12px;
  color: var(--roomInk); background: rgba(5,8,10,.78); border: 1px solid var(--roomHair); border-radius: 2px; padding: 6px 10px;
}
.vid-close:hover { border-color: var(--roomPen); color: var(--roomPen); }
.vid-body { padding: 17px 18px 18px; display: flex; flex-direction: column; flex-grow: 1; }
.vid-vi { display: block; font-size: 15px; font-weight: 600; color: var(--roomInk); margin-bottom: 3px; }
.vid-en { display: block; font-size: 13px; font-style: italic; color: var(--roomMeta); margin-bottom: 14px; }
.vid-foot {
  margin-top: auto; display: flex; justify-content: space-between; align-items: center; gap: 10px;
  border-top: 1px solid var(--roomHair); padding-top: 12px;
}
.vid-bai { font-family: var(--mono); font-size: 12px; color: var(--roomPen); white-space: nowrap; }
.vid-src { font-size: 11.5px; color: var(--roomMeta); text-align: right; }

/* ---------- tools ---------- */
.tools-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 48px; margin-bottom: 30px; }
.tools-intro { max-width: 660px; }
.tools-intro .h-sec { margin-bottom: 12px; }
.privacy { flex-shrink: 0; border-left: 3px solid var(--pen); padding-left: 16px; max-width: 300px; }
.privacy-t { display: flex; align-items: center; gap: 8px; font-size: 13.5px; font-weight: 600; color: var(--pen); margin-bottom: 3px; }
.privacy-t svg { flex-shrink: 0; }
.privacy-d { display: block; font-size: 13px; line-height: 1.5; color: var(--ink2); }

.tools { display: flex; gap: 20px; align-items: stretch; }
.calc {
  width: 560px; flex-shrink: 0; background: var(--panel); border: 1.5px solid var(--strong); border-radius: 2px;
  padding: 28px 30px; display: flex; flex-direction: column;
}
.calc-head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; margin-bottom: 20px; }
.calc-in { display: flex; align-items: flex-end; gap: 12px; margin-bottom: 24px; }
.calc-field label { display: block; font-size: 13px; font-weight: 500; color: var(--meta); margin-bottom: 7px; }
.calc-field input {
  width: 130px; height: 50px; padding: 0 14px; font-family: var(--mono); font-size: 18px;
  color: var(--ink); background: var(--bg); border: 1.5px solid var(--strong); border-radius: 2px;
}
.calc-field input[aria-invalid="true"] { border-color: var(--core); }
.ghost {
  min-height: 50px; padding: 0 16px; font-size: 14px; font-weight: 500; color: var(--ink);
  background: transparent; border: 1px solid var(--hair); border-radius: 2px;
}
.ghost:hover { background: var(--sunk); }
.calc-err { margin: -14px 0 16px; font-size: 12.5px; font-weight: 500; color: var(--core); }
.doses { border-top: 1px solid var(--hair); }
.dose { padding: 18px 0; border-bottom: 1px solid var(--hair); }
.dose-head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; margin-bottom: 10px; }
.dose-drug { font-size: 15px; font-weight: 600; }
.dose-rule { font-family: var(--mono); font-size: 12px; color: var(--meta); }
.parts { display: flex; gap: 26px; }
.part-v { display: block; font-family: var(--mono); font-size: 23px; font-weight: 500; line-height: 1.2; color: var(--ink); }
.part--core .part-v { color: var(--core); }
.parts.is-empty .part-v { color: var(--meta); }
.part-l { display: block; font-size: 12.5px; color: var(--meta); margin-top: 2px; }
.cap { display: inline-block; margin-top: 11px; font-size: 12.5px; font-weight: 500; color: var(--core); }
.calc-note { margin-top: auto; padding-top: 18px; }
.calc-note span { display: block; font-size: 12.5px; line-height: 1.6; color: var(--meta); }
.calc-note span + span { margin-top: 8px; }

.tgroups { flex-grow: 1; min-width: 0; display: flex; flex-direction: column; gap: 22px; }
.tgroup-head { display: flex; align-items: baseline; gap: 12px; margin-bottom: 12px; padding-bottom: 9px; border-bottom: 1px solid var(--hair); }
.tgroup-head .h-small { font-size: 17px; flex-grow: 1; }
.tgroup-head .count { font-family: var(--mono); font-size: 13px; color: var(--meta); flex-shrink: 0; }
.tlist { display: flex; flex-wrap: wrap; gap: 7px; }
.tlist span {
  font-size: 13.5px; font-weight: 500; color: var(--ink); background: var(--panel);
  border: 1px solid var(--hair); border-radius: 2px; padding: 8px 12px;
}
.tlist span.on { color: var(--penOn); background: var(--pen); border-color: var(--pen); }
.legend { display: flex; align-items: center; gap: 9px; }
.legend-sq { width: 11px; height: 11px; background: var(--pen); border-radius: 1px; flex-shrink: 0; }
.legend span:last-child { font-size: 12.5px; line-height: 1.5; color: var(--ink2); }

/* ---------- recent + roadmap ---------- */
.updates { display: flex; gap: 56px; }
.recent { flex-grow: 1; flex-basis: 0; min-width: 0; }
.rec { padding: 20px 0; border-top: 1px solid var(--hair); }
.rec-top { display: flex; align-items: baseline; gap: 14px; margin-bottom: 9px; }
.rec-top .code { flex-shrink: 0; }
.rec-title { font-size: 16px; font-weight: 600; color: var(--ink); flex-grow: 1; }
.rec-date { font-family: var(--mono); font-size: 12.5px; color: var(--meta); flex-shrink: 0; }
.rec-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 9px; }
.rec-tags span { font-size: 12px; color: var(--ink2); background: var(--sunk); border-radius: 2px; padding: 4px 8px; }
.rec-tags .p { font-weight: 500; color: var(--core); background: var(--coreBg); }
.rec-ref { display: block; font-size: 13px; line-height: 1.55; color: var(--meta); }
.roadmap { width: 420px; flex-shrink: 0; }
.phase { display: flex; gap: 18px; padding: 20px 0; border-top: 1px solid var(--hair); }
.phase-n { font-family: var(--mono); font-size: 13px; font-weight: 500; color: var(--ink); width: 22px; flex-shrink: 0; }
.phase-n--core { color: var(--core); }
.phase-n--meta { color: var(--meta); }
.phase-name { display: block; font-size: 15.5px; font-weight: 600; margin-bottom: 5px; }
.phase-desc { display: block; font-size: 13.5px; line-height: 1.58; color: var(--ink2); }
.launch { margin-top: 24px; background: var(--panel); border: 1px solid var(--hair); border-radius: 2px; padding: 22px 24px; }
.launch-h { display: block; font-size: 14px; font-weight: 600; margin-bottom: 14px; }
.launch-row { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; padding: 9px 0; border-bottom: 1px solid var(--hair); }
.launch-row span:first-child { font-size: 13.5px; color: var(--ink2); }
.launch-n { font-family: var(--mono); font-size: 15px; font-weight: 500; flex-shrink: 0; }

/* ---------- footer ---------- */
.footer { margin-top: 72px; background: var(--room); color: var(--roomInk3); padding: 56px 0 62px; }
.disclaimer {
  margin: 0 0 44px; max-width: 760px; border-left: 3px solid var(--roomCore); padding-left: 20px;
  font-size: 15.5px; line-height: 1.6; color: var(--roomInk);
}
.foot-cols { display: flex; gap: 56px; align-items: flex-start; }
.foot-brand { width: 379px; flex-shrink: 0; }
.foot-logo {
  display: block; font-family: var(--display); font-variation-settings: 'wdth' 118, 'wght' 750;
  font-size: 21px; letter-spacing: -0.015em; color: var(--roomInk); margin-bottom: 12px;
}
.foot-tag { display: block; font-size: 13.5px; line-height: 1.6; color: var(--roomMeta); }
.foot-col { flex-grow: 1; flex-basis: 0; }
.foot-col span { display: block; font-size: 13.5px; line-height: 1.85; color: var(--roomInk3); }
.foot-col .foot-h { font-weight: 600; color: var(--roomInk); margin-bottom: 14px; line-height: 1.4; }

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 1480px) {
  .header { padding: 0 40px; gap: 22px; }
  .nav { gap: 18px; }
}

@media (max-width: 1380px) {
  .cta .btn--ghost { display: none; }
}

@media (max-width: 1320px) {
  :root { --gutter: 48px; }
  .header { padding: 0 var(--gutter); }
  .neuron { right: 0; width: 360px; height: 520px; }
  .hero-title { max-width: 780px; font-size: 60px; }
}

@media (max-width: 1180px) {
  .nav, .seg, .cta { display: none; }
  .mbar { display: flex; }
  .hero-title { font-size: clamp(40px, 6vw, 64px); max-width: 640px; }
  .neuron { width: 300px; height: 460px; opacity: .55; }
  [data-theme="dark"] .neuron { opacity: .45; }
  .secgrid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .secgrid > .sec, .secgrid > .sec--dq { grid-column: span 1; }
  .secgrid > .sec--dq { grid-column: 1 / -1; }
  .secgrid > .sec:last-child { grid-column: 1 / -1; }
  .vids { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .tools { flex-direction: column; }
  .calc { width: auto; max-width: 640px; }
  .updates { flex-direction: column; gap: 32px; }
  .roadmap { width: auto; padding-top: 0; max-width: 640px; }
  .foot-brand { width: 300px; }
}

@media (max-width: 860px) {
  .gl thead { display: none; }
  .gl, .gl tbody { display: block; background: transparent; border: 0; }
  .gl tbody tr {
    display: grid; grid-template-columns: 1fr auto; column-gap: 12px;
    background: var(--panel); border: 1px solid var(--hair); border-radius: 2px; padding: 15px 16px; margin-bottom: 9px;
  }
  .gl td { padding: 0; }
  .gl .t { grid-column: 1 / -1; padding-bottom: 11px; border-bottom: 1px solid var(--hair); margin-bottom: 10px; }
  .gl .org { font-size: 13.5px; }
  .gl .yr { font-size: 13.5px; text-align: right; }
  .gl .tr { font-size: 13px; padding-top: 9px; align-self: center; }
  .gl .st { padding-top: 9px; text-align: right; }
  .tools-head { flex-direction: column; align-items: flex-start; gap: 16px; }
  .privacy { max-width: none; }
  .foot-cols { flex-wrap: wrap; gap: 26px 40px; }
  .foot-brand { width: 100%; }
}

@media (max-width: 720px) {
  :root { --gutter: 18px; }
  .topbar { height: 3px; }
  .header { height: 58px; padding: 0 18px; }
  .brand { font-size: 18px; }

  /* Thứ tự khối theo artboard điện thoại: công cụ lên ngay sau phần mở đầu */
  .hero { order: 0; }
  #congcu { order: 1; }
  #muc { order: 2; }
  #guideline { order: 3; }
  #video { order: 4; }
  #cap-nhat { order: 5; }

  .hero { padding-top: 28px; }
  .hero-head { display: flex; gap: 12px; align-items: flex-start; margin-bottom: 16px; }
  .hero-title {
    flex-grow: 1; margin: 0; font-variation-settings: 'wdth' 106, 'wght' 730;
    font-size: 31px; line-height: 1.05; letter-spacing: -0.026em;
  }
  .br-d { display: none; }
  .neuron { position: static; width: 112px; height: 240px; flex-shrink: 0; opacity: 1; }
  [data-theme="dark"] .neuron { opacity: .85; }
  .hero-lead { font-size: 15px; line-height: 1.58; margin-bottom: 22px; }
  .search { margin-top: 0; }
  .search label { font-size: 12.5px; margin-bottom: 7px; }
  .search input { height: 54px; padding: 0 15px; font-size: 16px; }
  .hit { display: grid; grid-template-columns: auto 1fr; gap: 3px 10px; padding: 11px 14px; }
  .hit-code { width: auto; font-size: 11.5px; }
  .hit-p { width: auto; text-align: left; font-size: 11px; }
  .hit-title { grid-column: 1 / -1; font-size: 14px; line-height: 1.4; }
  .hit-sec { display: none; }
  .hit-note { padding: 10px 14px; font-size: 12px; }
  .chips-wrap { margin-top: 28px; }
  .chips-head { flex-direction: column; gap: 5px; margin-bottom: 12px; }
  .chips-head .h-small { font-size: 18px; }
  .chips-head .meta { font-size: 13px; }
  .chips { gap: 7px; }
  .chip { padding: 10px 14px; font-size: 13.5px; }

  .block { padding-top: 34px; }
  .ruled { padding-top: 70px; }
  .ruled::before { top: 44px; }
  .h-sec { font-size: 26px; letter-spacing: -0.02em; margin-bottom: 16px; }
  .lead { font-size: 14px; line-height: 1.55; }
  .tools-head { margin-bottom: 22px; }
  .tools-intro .h-sec { margin-bottom: 10px; }
  .privacy { padding-left: 14px; }

  .secgrid { grid-template-columns: minmax(0, 1fr); gap: 12px; }
  .secgrid > .sec, .secgrid > .sec--dq, .secgrid > .sec:last-child { grid-column: auto; }
  .sec, .sec--dc { padding: 20px; }
  .sec--inv { padding: 22px 20px; }
  .sec-name { font-size: 21px; }
  .sec-name--lg { font-size: 22px; }
  .sec-name--xl { font-size: 30px; }
  .sec-desc { font-size: 13.5px; margin-bottom: 14px; }
  .sec--inv .sec-desc { font-size: 14px; margin-bottom: 16px; }
  .tags { gap: 6px; margin-bottom: 18px; }
  .tags span { font-size: 12.5px; padding: 6px 10px; }
  .stat-n { font-size: 21px; }
  .sec--inv .stat-n { font-size: 22px; }
  .sec-foot { padding-top: 13px; }

  .filters { flex-direction: column; align-items: flex-start; gap: 9px; margin-bottom: 16px; }
  .filt { padding: 10px 14px; font-size: 13px; }
  .fine { font-size: 12px; }

  .room { margin-top: 44px; padding: 34px 0 36px; }
  .vgroups { gap: 6px; margin: 0 0 20px; }
  .vgroups span { font-size: 12.5px; padding: 8px 11px; }
  .vids { grid-template-columns: minmax(0, 1fr); gap: 12px; }
  .vid-body { padding: 14px 16px 15px; }

  .calc { padding: 20px 18px; max-width: none; }
  .h-card { font-size: 20px; }
  .calc-head .code { font-size: 11px; }
  .calc-in { gap: 10px; margin-bottom: 18px; }
  .calc-field { flex-grow: 1; }
  .calc-field input { width: 100%; height: 52px; }
  .ghost { min-height: 52px; }
  .dose { padding: 14px 0; }
  .dose-rule { font-size: 11px; }
  .parts { flex-direction: column; gap: 0; }
  .part { display: flex; flex-direction: row-reverse; justify-content: space-between; align-items: baseline; padding: 6px 0; }
  .part-v { font-size: 18px; }
  .part-l { font-size: 13px; margin-top: 0; }
  .calc-note span { font-size: 12px; }
  .tgroups { gap: 20px; }
  .tgroup-head .h-small { font-size: 16px; }
  .tlist { gap: 6px; }
  .tlist span { font-size: 13px; padding: 8px 11px; }

  .updates { gap: 26px; }
  .h-sec--md { font-size: 26px; }
  .rec { padding: 16px 0; }
  .rec-top { display: grid; grid-template-columns: 1fr auto; gap: 6px 10px; }
  .rec-top .code, .rec-date { font-size: 11.5px; }
  .rec-title { grid-column: 1 / -1; grid-row: 2; font-size: 15.5px; line-height: 1.35; }
  .rec-tags span { font-size: 11.5px; }
  .rec-ref { font-size: 12.5px; }

  .footer { margin-top: 44px; padding: 32px 0 40px; }
  .disclaimer { font-size: 14.5px; padding-left: 15px; margin-bottom: 30px; }
  .foot-cols { flex-direction: column; gap: 22px; }
  .foot-logo { font-size: 19px; margin-bottom: 8px; }
  .foot-col .foot-h { margin-bottom: 10px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}