@import url('/assets/fonts.css');

/* ===== Giải Pháp Thực Chiến — design tokens ===== */
:root {
  --ink: #13140F;
  --ink-2: #1C1D17;
  --ink-3: #2A2B23;
  --paper: #F4F1EA;
  --paper-2: #ECE7DC;
  --card: #FBF9F4;
  --line: #DDD6C6;
  --line-dark: #34352C;
  --muted: #6E6A5E;
  --muted-dark: #A6A08F;
  --brass: #C9A45C;
  --brass-hi: #E7C47A;
  --brass-ink: #8A7440;
  --moss: #4F6B4A;
  --rust: #A8442A;
  --serif: 'Fraunces', Georgia, 'Times New Roman', serif;
  --sans: 'Be Vietnam Pro', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, Consolas, monospace;
  --r: 14px;
  --r-sm: 9px;
  --shadow: 0 1px 0 rgba(19,20,15,.04), 0 12px 32px -18px rgba(19,20,15,.28);
  --wrap: min(1180px, 100% - 40px);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font: 400 16px/1.6 var(--sans); font-feature-settings: 'ss01', 'tnum';
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; }
::selection { background: var(--brass-hi); color: var(--ink); }
:focus-visible { outline: 2px solid var(--brass); outline-offset: 3px; border-radius: 4px; }
@media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; scroll-behavior: auto !important; } }

.wrap { width: var(--wrap); margin-inline: auto; }
.eyebrow { font: 500 11.5px/1 var(--mono); letter-spacing: .22em; text-transform: uppercase; color: var(--brass-ink); }
.dark .eyebrow { color: var(--brass); }
h1, h2, h3 { font-family: var(--serif); font-weight: 600; letter-spacing: -.015em; margin: 0; line-height: 1.08; }
h1 { font-size: clamp(40px, 6.4vw, 84px); letter-spacing: -.028em; }
h2 { font-size: clamp(30px, 4vw, 50px); }
h3 { font-size: 22px; }
p { margin: 0; }
.lead { font-size: clamp(17px, 1.6vw, 20px); color: var(--muted); max-width: 60ch; }
.dark .lead { color: var(--muted-dark); }
.num { font-variant-numeric: tabular-nums; }
.serif-it { font-style: italic; font-family: var(--serif); font-weight: 500; color: var(--brass-ink); }
.dark .serif-it { color: var(--brass-hi); }

/* ===== buttons ===== */
.btn {
  --bg: var(--ink); --fg: var(--paper);
  display: inline-flex; align-items: center; gap: 10px; justify-content: center;
  height: 48px; padding: 0 22px; border-radius: 999px; border: 1px solid transparent;
  background: var(--bg); color: var(--fg); font: 600 15px/1 var(--sans); text-decoration: none; cursor: pointer;
  transition: transform .15s ease, background .2s ease, box-shadow .2s ease;
}
.btn:hover { transform: translateY(-1px); box-shadow: 0 10px 24px -14px rgba(19,20,15,.6); }
.btn:active { transform: none; }
.btn[disabled] { opacity: .5; cursor: not-allowed; transform: none; }
.btn.brass { --bg: var(--brass-hi); --fg: var(--ink); }
.btn.ghost { --bg: transparent; --fg: var(--ink); border-color: var(--line); }
.dark .btn.ghost { --fg: var(--paper); border-color: var(--line-dark); }
.btn.sm { height: 38px; padding: 0 16px; font-size: 14px; }
.btn .arr { transition: transform .2s; }
.btn:hover .arr { transform: translateX(3px); }

/* ===== nav ===== */
.nav { position: sticky; top: 0; z-index: 50; background: rgba(244,241,234,.86); backdrop-filter: saturate(1.4) blur(14px); border-bottom: 1px solid var(--line); }
.nav .wrap { display: flex; align-items: center; gap: 28px; height: 70px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.brand img { width: 36px; height: 36px; }
.brand b { font: 600 18px/1 var(--serif); letter-spacing: -.01em; white-space: nowrap; }
.brand small { display: block; font: 500 9.5px/1 var(--mono); letter-spacing: .24em; color: var(--brass-ink); margin-top: 5px; }
.nav-links { display: flex; gap: 24px; margin-left: auto; }
.nav-links a { text-decoration: none; font-size: 14.5px; font-weight: 500; color: var(--muted); }
.nav-links a:hover, .nav-links a.on { color: var(--ink); }
.nav-cta { display: flex; gap: 10px; align-items: center; }
.credit-pill { display: inline-flex; align-items: center; gap: 8px; height: 38px; padding: 0 14px; border-radius: 999px; background: var(--ink); color: var(--paper); font: 600 14px/1 var(--sans); text-decoration: none; }
.credit-pill i { width: 8px; height: 8px; border-radius: 50%; background: var(--brass-hi); box-shadow: 0 0 0 3px rgba(231,196,122,.25); }
.burger { display: none; margin-left: auto; background: none; border: 1px solid var(--line); border-radius: 10px; width: 42px; height: 42px; cursor: pointer; }
@media (max-width: 880px) {
  .nav-links, .nav-cta .hide-m { display: none; }
  .burger { display: grid; place-items: center; }
  .nav-cta { margin-left: 0; }
  .nav.open .nav-links { display: flex; position: absolute; top: 70px; left: 0; right: 0; flex-direction: column; gap: 0; background: var(--paper); border-bottom: 1px solid var(--line); padding: 8px 20px 16px; }
  .nav.open .nav-links a { padding: 12px 0; border-bottom: 1px solid var(--line); }
  .brand small { display: none; }
}
.beta-tag { font: 600 10px/1 var(--mono); letter-spacing: .14em; padding: 4px 7px; border-radius: 6px; background: var(--brass-hi); color: var(--ink); }

/* ===== sections ===== */
section { padding: clamp(64px, 9vw, 120px) 0; }
.dark { background: var(--ink); color: var(--paper); }
.sec-head { display: grid; gap: 18px; margin-bottom: clamp(36px, 5vw, 60px); max-width: 760px; }

/* hero */
.hero { position: relative; overflow: hidden; padding-top: clamp(56px, 8vw, 104px); padding-bottom: clamp(56px, 8vw, 96px); }
.hero::before {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background-image: linear-gradient(var(--line-dark) 1px, transparent 1px), linear-gradient(90deg, var(--line-dark) 1px, transparent 1px);
  background-size: 64px 64px; opacity: .35; mask-image: radial-gradient(ellipse at 70% 30%, #000 10%, transparent 70%);
}
.hero .wrap { position: relative; display: grid; grid-template-columns: 1.25fr .9fr; gap: clamp(32px, 5vw, 72px); align-items: end; }
.hero h1 em { font-style: italic; font-weight: 500; color: var(--brass-hi); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 28px; margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--line-dark); }
.hero-meta div { font-size: 14px; color: var(--muted-dark); }
.hero-meta b { display: block; font: 600 26px/1.1 var(--serif); color: var(--paper); margin-bottom: 4px; }
.ticket {
  background: var(--ink-2); border: 1px solid var(--line-dark); border-radius: 20px; padding: 22px;
  box-shadow: 0 40px 80px -40px rgba(0,0,0,.8);
}
.ticket-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 18px; }
.ticket-row { display: flex; justify-content: space-between; align-items: center; padding: 13px 0; border-top: 1px dashed var(--line-dark); font-size: 14.5px; }
.ticket-row span:first-child { color: var(--muted-dark); }
.ticket-row b { font: 600 15px/1 var(--mono); }
.ticket-row .pos { color: #9DBF8F; }
.ticket-row .neg { color: var(--brass-hi); }
.state { display: inline-flex; align-items: center; gap: 7px; font: 500 11px/1 var(--mono); letter-spacing: .12em; text-transform: uppercase; padding: 6px 9px; border-radius: 999px; border: 1px solid var(--line-dark); color: var(--muted-dark); }
.state i { width: 6px; height: 6px; border-radius: 50%; background: #9DBF8F; }
@media (max-width: 900px) { .hero .wrap { grid-template-columns: 1fr; } }

/* steps */
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 250px), 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; }
.step { background: var(--card); padding: 30px 26px 34px; display: grid; gap: 14px; align-content: start; }
.step .n { font: 500 13px/1 var(--mono); color: var(--brass-ink); }
.step p { color: var(--muted); font-size: 15px; }

/* app cards */
.shelf { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr)); gap: 18px; }
.app-card {
  position: relative; display: grid; gap: 14px; align-content: start; padding: 24px; border-radius: var(--r);
  background: var(--card); border: 1px solid var(--line); text-decoration: none; min-height: 236px;
  transition: border-color .2s, transform .2s, box-shadow .2s;
}
a.app-card:hover { border-color: var(--brass); transform: translateY(-2px); box-shadow: var(--shadow); }
.app-ico { width: 48px; height: 48px; border-radius: 12px; background: var(--ink); display: grid; place-items: center; color: var(--brass-hi); }
.app-ico svg { width: 24px; height: 24px; }
.app-card h3 { font-size: 21px; }
.app-card p { color: var(--muted); font-size: 14.5px; }
.app-foot { display: flex; justify-content: space-between; align-items: center; margin-top: auto; padding-top: 14px; border-top: 1px solid var(--line); font-size: 13.5px; color: var(--muted); }
.app-foot b { color: var(--ink); font-family: var(--mono); font-weight: 500; }
.badge { display: inline-flex; align-items: center; gap: 6px; font: 600 10.5px/1 var(--mono); letter-spacing: .1em; text-transform: uppercase; padding: 6px 8px; border-radius: 6px; background: var(--paper-2); color: var(--muted); }
.badge.live { background: #E3EADF; color: var(--moss); }
.badge.soon { background: #F3E7CC; color: var(--brass-ink); }
.badge.off { background: #F1DDD6; color: var(--rust); }
.app-card .badge { position: absolute; top: 22px; right: 22px; }
.app-card.soon { opacity: .9; }
.app-card.suggest { border-style: dashed; background: transparent; place-content: center; text-align: center; justify-items: center; }

/* principles */
.princ { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr)); gap: 0; border-top: 1px solid var(--line-dark); }
.princ > div { padding: 30px 26px 30px 0; border-bottom: 1px solid var(--line-dark); display: grid; gap: 12px; }
.princ > div + div { padding-left: 26px; border-left: 1px solid var(--line-dark); }
@media (max-width: 860px) { .princ > div + div { padding-left: 0; border-left: 0; } }
.princ h3 { color: var(--paper); font-size: 24px; }
.princ p { color: var(--muted-dark); font-size: 15px; }
.princ .k { font: 500 12px/1 var(--mono); letter-spacing: .16em; color: var(--brass); }

/* tiers */
.tiers { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr)); gap: 18px; }
.tier { padding: 28px; border-radius: var(--r); border: 1px solid var(--line); background: var(--card); display: grid; gap: 14px; align-content: start; }
.tier.feature { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.tier.feature p, .tier.feature li { color: var(--muted-dark); }
.tier ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 10px; }
.tier li { font-size: 14.5px; color: var(--muted); padding-left: 22px; position: relative; }
.tier li::before { content: ''; position: absolute; left: 0; top: .62em; width: 12px; height: 1.5px; background: var(--brass); }
.tier .tag { font: 500 12px/1 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--brass-ink); }
.tier.feature .tag { color: var(--brass); }

/* cta band */
.band { display: grid; grid-template-columns: 1.2fr 1fr; gap: 40px; align-items: center; }
@media (max-width: 860px) { .band { grid-template-columns: 1fr; } }

/* forms */
.field { display: grid; gap: 7px; }
.field label { font-size: 13.5px; font-weight: 600; }
.field .hint { font-size: 12.5px; color: var(--muted); }
.input, .select, .textarea {
  width: 100%; height: 48px; padding: 0 15px; border-radius: var(--r-sm); border: 1px solid var(--line); background: #fff;
  font: 400 15.5px/1.2 var(--sans); color: var(--ink); transition: border-color .15s, box-shadow .15s;
}
.textarea { height: auto; min-height: 110px; padding: 13px 15px; line-height: 1.5; resize: vertical; }
.input:focus, .select:focus, .textarea:focus { outline: none; border-color: var(--brass); box-shadow: 0 0 0 4px rgba(201,164,92,.18); }
.dark .input { background: var(--ink-2); border-color: var(--line-dark); color: var(--paper); }
.inline-form { display: flex; gap: 10px; flex-wrap: wrap; }
.inline-form .input { flex: 1 1 240px; }
.form-msg { font-size: 14px; min-height: 20px; }
.form-msg.err { color: var(--rust); }
.form-msg.ok { color: var(--moss); }
.dark .form-msg.ok { color: #9DBF8F; }

/* auth */
.auth { min-height: calc(100vh - 70px); display: grid; grid-template-columns: 1fr 1fr; }
.auth-side { padding: clamp(40px, 6vw, 80px); display: flex; flex-direction: column; justify-content: space-between; gap: 40px; }
.auth-main { padding: clamp(40px, 6vw, 80px) clamp(20px, 5vw, 80px); display: grid; align-content: center; }
.auth-box { width: min(420px, 100%); display: grid; gap: 18px; }
@media (max-width: 860px) { .auth { grid-template-columns: 1fr; } .auth-side { display: none; } }

/* dashboard */
.page { padding: 44px 0 90px; }
.page-head { display: flex; flex-wrap: wrap; gap: 20px; justify-content: space-between; align-items: end; margin-bottom: 30px; }
.page-head h1 { font-size: clamp(32px, 4vw, 46px); }
.kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 200px), 1fr)); gap: 14px; margin-bottom: 28px; }
.kpi { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 20px; display: grid; gap: 8px; }
.kpi.dark { background: var(--ink); border-color: var(--ink); }
.kpi span { font-size: 13px; color: var(--muted); }
.kpi.dark span { color: var(--muted-dark); }
.kpi b { font: 600 32px/1 var(--serif); }
.kpi small { font-size: 12.5px; color: var(--muted); }
.kpi.dark small { color: var(--muted-dark); }
.panel { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 22px; }
.panel + .panel { margin-top: 18px; }
.panel-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 14px; flex-wrap: wrap; }
.panel-head h3 { font-size: 20px; }
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 380px), 1fr)); gap: 18px; }
.table-wrap { overflow-x: auto; margin: 0 -4px; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th { text-align: left; font: 500 11px/1 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--muted); padding: 10px 8px; border-bottom: 1px solid var(--line); white-space: nowrap; }
td { padding: 12px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
td.n { text-align: right; font-family: var(--mono); font-size: 13.5px; white-space: nowrap; }
th.n { text-align: right; }
.plus { color: var(--moss); } .minus { color: var(--rust); }
.empty { padding: 30px; text-align: center; color: var(--muted); font-size: 14.5px; }
.tabs { display: flex; gap: 4px; padding: 4px; background: var(--paper-2); border-radius: 999px; width: fit-content; flex-wrap: wrap; margin-bottom: 22px; }
.tabs button { border: 0; background: none; padding: 9px 16px; border-radius: 999px; font: 600 14px/1 var(--sans); color: var(--muted); cursor: pointer; }
.tabs button.on { background: var(--card); color: var(--ink); box-shadow: 0 1px 3px rgba(0,0,0,.08); }

/* app runner */
.runner { display: grid; grid-template-columns: 1.1fr .9fr; gap: 18px; align-items: start; }
@media (max-width: 900px) { .runner { grid-template-columns: 1fr; } }
.cost { display: flex; justify-content: space-between; align-items: center; padding: 16px 18px; border-radius: var(--r-sm); background: var(--ink); color: var(--paper); }
.cost b { font: 600 24px/1 var(--serif); color: var(--brass-hi); }
.stepper { display: inline-flex; align-items: center; border: 1px solid var(--line); border-radius: 999px; overflow: hidden; background: #fff; }
.stepper button { width: 42px; height: 42px; border: 0; background: none; font-size: 18px; cursor: pointer; }
.stepper span { min-width: 36px; text-align: center; font: 600 15px/1 var(--mono); }
.out { display: grid; gap: 10px; }
.out-item { padding: 14px 16px; border-radius: var(--r-sm); background: var(--paper-2); font-size: 14.5px; }
.flow { display: grid; gap: 0; margin-top: 6px; }
.flow div { display: grid; grid-template-columns: 22px 1fr auto; gap: 10px; align-items: center; padding: 9px 0; font-size: 14px; border-bottom: 1px dashed var(--line); }
.flow i { width: 10px; height: 10px; border-radius: 50%; background: var(--line); justify-self: center; }
.flow .done i { background: var(--moss); }
.flow .warn i { background: var(--brass); }
.flow .bad i { background: var(--rust); }

/* brand page */
.swatches { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 170px), 1fr)); gap: 14px; }
.sw { border-radius: var(--r); overflow: hidden; border: 1px solid var(--line); background: var(--card); }
.sw div { height: 110px; }
.sw p { padding: 12px 14px; font-size: 13px; display: grid; gap: 2px; }
.sw b { font-size: 14px; }
.sw code { font-family: var(--mono); color: var(--muted); }
.logo-stage { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr)); gap: 14px; }
.logo-stage > div { border-radius: var(--r); border: 1px solid var(--line); min-height: 200px; display: grid; place-items: center; padding: 28px; }
.type-row { display: grid; grid-template-columns: 160px 1fr; gap: 20px; padding: 22px 0; border-top: 1px solid var(--line); align-items: baseline; }
@media (max-width: 640px) { .type-row { grid-template-columns: 1fr; } }

/* prose (terms) */
.prose { max-width: 720px; display: grid; gap: 16px; }
.prose h2 { font-size: 28px; margin-top: 18px; }
.prose p, .prose li { color: #3D3B33; }
.notice { padding: 14px 18px; border-radius: var(--r-sm); background: #F3E7CC; color: #5C4A22; font-size: 14.5px; }

/* footer */
footer { background: var(--ink); color: var(--muted-dark); padding: 64px 0 40px; font-size: 14px; }
footer .wrap { display: grid; gap: 40px; }
.foot-top { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 30px; }
@media (max-width: 760px) { .foot-top { grid-template-columns: 1fr 1fr; } .foot-top > div:first-child { grid-column: 1 / -1; } }
footer h4 { font: 500 11px/1 var(--mono); letter-spacing: .2em; text-transform: uppercase; color: var(--brass); margin: 0 0 16px; }
footer a { display: block; text-decoration: none; padding: 5px 0; color: var(--muted-dark); }
footer a:hover { color: var(--paper); }
.foot-bot { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; padding-top: 24px; border-top: 1px solid var(--line-dark); font-size: 13px; }
footer .brand b { color: var(--paper); }

.toast { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%) translateY(20px); opacity: 0; background: var(--ink); color: var(--paper); padding: 12px 18px; border-radius: 999px; font-size: 14px; z-index: 99; transition: .25s; pointer-events: none; }
.toast.show { opacity: 1; transform: translateX(-50%); }
.fade { animation: fade .45s ease both; }
@keyframes fade { from { opacity: 0; transform: translateY(8px); } }
.muted { color: var(--muted); }
.mt { margin-top: 18px; } .mt-l { margin-top: 36px; }
.row { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.spacer { flex: 1; }

/* ===== v1.1 — mobile nav ===== */
.m-only { display: none; }
@media (max-width: 880px) {
  .nav-cta { margin-left: auto; }
  .burger { margin-left: 0; flex: none; }
  .nav.open .m-only { display: block; }
}
@media (max-width: 560px) {
  .nav .wrap { gap: 12px; }
  .brand b { font-size: 16px; }
  .nav.has-user .brand > span { display: none; }
  .credit-pill { height: 36px; padding: 0 12px; font-size: 13.5px; }
}
@media (max-width: 380px) { .brand > span { display: none; } }

/* ===== hero v2 ===== */
.hero2 { position: relative; overflow: hidden; padding: clamp(48px, 7vw, 96px) 0 clamp(56px, 8vw, 104px); }
.hero2::before { content: ''; position: absolute; inset: 0; pointer-events: none; background-image: linear-gradient(var(--line-dark) 1px, transparent 1px), linear-gradient(90deg, var(--line-dark) 1px, transparent 1px); background-size: 64px 64px; opacity: .3; mask-image: radial-gradient(ellipse at 20% 30%, #000 10%, transparent 65%); }
.hero2 .wrap { position: relative; display: grid; grid-template-columns: minmax(0, .95fr) minmax(0, 1.15fr); gap: clamp(32px, 5vw, 64px); align-items: center; }
.hero2 h1 em { font-style: italic; font-weight: 500; color: var(--brass-hi); }
.hero2-art { position: relative; margin: 0; }
.hero2-art img { width: 100%; height: auto; aspect-ratio: 3 / 2; object-fit: cover; border-radius: 22px; border: 1px solid var(--line-dark); box-shadow: 0 50px 100px -50px rgba(0,0,0,.9); }
.hero2-art figcaption, .split-img figcaption { position: absolute; right: 14px; top: 12px; font: 500 10px/1 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: rgba(244,241,234,.7); background: rgba(19,20,15,.55); padding: 5px 7px; border-radius: 5px; backdrop-filter: blur(4px); }
.float-ticket { position: absolute; left: -28px; bottom: -34px; width: min(300px, 82%); background: rgba(28,29,23,.92); backdrop-filter: blur(10px); border: 1px solid var(--line-dark); border-radius: 16px; padding: 16px 18px; box-shadow: 0 30px 60px -30px rgba(0,0,0,.9); animation: floaty 6s ease-in-out infinite; }
.float-ticket .ticket-row { padding: 10px 0; font-size: 13.5px; }
@keyframes floaty { 50% { transform: translateY(-8px); } }
.hero-proof { list-style: none; padding: 0; margin: 44px 0 0; display: flex; gap: clamp(20px, 4vw, 44px); flex-wrap: wrap; border-top: 1px solid var(--line-dark); padding-top: 24px; }
.hero-proof b { display: block; font: 600 34px/1 var(--serif); color: var(--brass-hi); }
.hero-proof span { font-size: 13.5px; color: var(--muted-dark); }
@media (max-width: 900px) { .hero2 .wrap { grid-template-columns: minmax(0, 1fr); } .float-ticket { left: 12px; bottom: -28px; } .hero2-art { margin-bottom: 30px; } }

/* trades marquee */
.trades { background: var(--brass-hi); color: var(--ink); overflow: hidden; border-block: 1px solid var(--ink); }
.trades-in { display: flex; gap: 22px; width: max-content; padding: 14px 0; animation: marq 40s linear infinite; font: 600 15px/1 var(--serif); white-space: nowrap; }
.trades-in i { font-style: normal; color: var(--brass-ink); }
@keyframes marq { to { transform: translateX(-50%); } }

/* pain */
.pain-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 290px), 1fr)); gap: 18px; }
.pain-grid article { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 28px; display: grid; gap: 12px; align-content: start; }
.pain-grid .k { font: 500 12px/1 var(--mono); color: var(--rust); letter-spacing: .14em; }
.pain-grid p { color: var(--muted); font-size: 15px; }
.pain-grid .fix { color: var(--moss); font-weight: 600; font-size: 14.5px; padding-top: 12px; border-top: 1px dashed var(--line); }

/* compare */
.vs { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr)); gap: 18px; }
.vs-col { border: 1px solid var(--line-dark); border-radius: var(--r); padding: 28px; }
.vs-col h4 { margin: 0 0 18px; font: 600 20px/1.2 var(--serif); display: flex; gap: 10px; align-items: center; color: var(--muted-dark); }
.vs-col.on { background: var(--ink-2); border-color: var(--brass); box-shadow: 0 0 0 1px var(--brass) inset; }
.vs-col.on h4 { color: var(--paper); }
.vs-col ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.vs-col li { padding-left: 28px; position: relative; color: var(--muted-dark); font-size: 15px; }
.vs-col li::before { content: '✕'; position: absolute; left: 0; color: #8A5A4C; font-size: 13px; top: 2px; }
.vs-col.on li { color: var(--paper); }
.vs-col.on li::before { content: '✓'; color: var(--brass-hi); }

/* simulator */
.sim-wrap { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(32px, 5vw, 64px); align-items: center; }
@media (max-width: 900px) { .sim-wrap { grid-template-columns: minmax(0, 1fr); } }
.sim-steps { margin: 6px 0 0; padding-left: 20px; display: grid; gap: 8px; color: var(--muted); }
.sim-steps b { color: var(--ink); }
.sim { background: var(--ink); color: var(--paper); border-radius: 22px; padding: 24px; display: grid; gap: 18px; box-shadow: 0 40px 80px -40px rgba(19,20,15,.7); }
.sim-head { display: flex; gap: 14px; align-items: center; }
.sim-head .app-ico { background: var(--ink-3); }
.sim-head b { display: block; font: 600 19px/1.2 var(--serif); }
.sim-head span { font-size: 13px; color: var(--muted-dark); }
.sim .field label { color: var(--muted-dark); font-weight: 500; }
.sim .field label b { color: var(--brass-hi); font-family: var(--mono); }
.range { width: 100%; accent-color: var(--brass-hi); height: 28px; }
.seg { display: grid; grid-template-columns: repeat(3, 1fr); gap: 4px; padding: 4px; background: var(--ink-3); border-radius: 12px; }
.seg button { border: 0; background: none; color: var(--muted-dark); padding: 10px 6px; border-radius: 9px; font: 600 13.5px/1 var(--sans); cursor: pointer; }
.seg button.on { background: var(--paper); color: var(--ink); }
.sim-ledger { display: grid; border-top: 1px dashed var(--line-dark); }
.sl { display: grid; grid-template-columns: 14px 1fr auto; gap: 12px; align-items: center; padding: 11px 0; border-bottom: 1px dashed var(--line-dark); animation: fade .35s ease both; }
.sl .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--line-dark); }
.sl b { font-size: 14px; font-weight: 600; display: block; }
.sl small { font-size: 12.5px; color: var(--muted-dark); }
.sl code { font: 600 15px/1 var(--mono); }
.sl.neg code { color: var(--brass-hi); } .sl.pos code { color: #9DBF8F; } .sl.pos .dot, .sl.ok .dot { background: #9DBF8F; } .sl.warn .dot { background: var(--brass); } .sl.bad .dot { background: #C9705A; }
.sim-total { display: flex; align-items: baseline; gap: 10px; justify-content: flex-end; padding-top: 4px; }
.sim-total span { color: var(--muted-dark); font-size: 14px; }
.sim-total b { font: 600 44px/1 var(--serif); color: var(--brass-hi); }

/* split */
.split-in { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1fr); gap: clamp(32px, 6vw, 80px); align-items: center; }
.split-img { position: relative; margin: 0; }
.split-img img { width: 100%; height: auto; aspect-ratio: 2 / 3; object-fit: cover; border-radius: 22px; }
.split-copy { display: grid; gap: 22px; }
.qs { margin: 0; padding: 0; list-style: none; counter-reset: q; display: grid; gap: 16px; }
.qs li { counter-increment: q; padding: 18px 20px 18px 62px; position: relative; background: var(--card); border: 1px solid var(--line); border-radius: var(--r-sm); color: var(--muted); font-size: 15px; }
.qs li::before { content: counter(q, decimal-leading-zero); position: absolute; left: 20px; top: 18px; font: 600 20px/1 var(--serif); color: var(--brass-ink); }
.qs b { color: var(--ink); display: block; margin-bottom: 2px; }
@media (max-width: 860px) { .split-in { grid-template-columns: minmax(0, 1fr); } .split-img img { aspect-ratio: 4 / 3; } }

/* road */
.road { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 230px), 1fr)); gap: 0; border-top: 2px solid var(--ink); }
.road > div { padding: 26px 22px 10px 0; display: grid; gap: 10px; align-content: start; position: relative; }
.road > div::before { content: ''; position: absolute; top: -7px; left: 0; width: 12px; height: 12px; border-radius: 50%; background: var(--brass); border: 2px solid var(--paper); }
.road .n { font: 500 12px/1 var(--mono); color: var(--brass-ink); letter-spacing: .14em; }
.road p { color: var(--muted); font-size: 15px; }
.paper2 { background: var(--paper-2); }

/* faq */
.faq-wrap { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: clamp(28px, 5vw, 64px); align-items: start; }
@media (max-width: 860px) { .faq-wrap { grid-template-columns: minmax(0, 1fr); } }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; gap: 16px; padding: 20px 0; font: 600 18px/1.35 var(--serif); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary span { font: 400 22px/1 var(--sans); color: var(--brass-ink); transition: transform .2s; }
.faq details[open] summary span { transform: rotate(45deg); }
.faq details p { padding: 0 0 22px; color: var(--muted); max-width: 62ch; }

/* final */
.final-in { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr); gap: clamp(28px, 5vw, 64px); align-items: center; }
.final-in img { width: 100%; height: auto; border-radius: 22px; aspect-ratio: 1; object-fit: cover; }
@media (max-width: 860px) { .final-in { grid-template-columns: minmax(0, 1fr); } .final-in img { max-width: 420px; } }

/* about */
.about-hero { padding: clamp(64px, 9vw, 120px) 0; background-image: linear-gradient(90deg, rgba(19,20,15,.96) 30%, rgba(19,20,15,.55)), url('/assets/img/xuong-ban-lam-viec.webp'); background-size: cover; background-position: center right; }
.about-grid { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, .9fr); gap: clamp(28px, 5vw, 64px); align-items: start; }
@media (max-width: 860px) { .about-grid { grid-template-columns: minmax(0, 1fr); } }
.about-card { background: var(--ink); color: var(--paper); border-radius: 22px; padding: 28px; display: grid; gap: 26px; position: sticky; top: 96px; }
.about-card p { margin-top: 10px; color: var(--muted-dark); font-size: 16px; }

/* brand book */
.brand-hero { padding: clamp(56px, 8vw, 104px) 0 40px; }
.brand-hero-in { display: grid; gap: 24px; margin: 28px 0 36px; }
.brand-hero-in img { width: min(560px, 100%); height: auto; }
.toc { display: flex; flex-wrap: wrap; gap: 8px; }
.toc a { font: 500 12px/1 var(--mono); letter-spacing: .1em; text-decoration: none; padding: 9px 12px; border: 1px solid var(--line-dark); border-radius: 999px; color: var(--muted-dark); }
.toc a:hover { color: var(--paper); border-color: var(--brass); }
.bb { display: grid; gap: 0; }
.bb-sec { display: grid; grid-template-columns: 90px minmax(0, 1fr); gap: 20px; padding: 48px 0; border-top: 1px solid var(--line); scroll-margin-top: 80px; }
.bb-sec h2 { font-size: clamp(28px, 3.4vw, 40px); margin-bottom: 14px; }
.bb-n { font: 600 40px/1 var(--serif); color: var(--brass); }
@media (max-width: 700px) { .bb-sec { grid-template-columns: minmax(0, 1fr); gap: 8px; } .bb-n { font-size: 26px; } }
.bb-big { font: 500 clamp(20px, 2.4vw, 28px)/1.4 var(--serif); font-style: italic; max-width: 40ch; }
table.kv th { width: 140px; text-transform: none; letter-spacing: 0; font: 600 14px/1.4 var(--sans); color: var(--ink); vertical-align: top; padding-top: 14px; }
.values { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 160px), 1fr)); gap: 12px; }
.values > div { background: var(--ink); color: var(--paper); border-radius: var(--r); padding: 20px; display: grid; gap: 6px; }
.values span { font: 500 11px/1 var(--mono); color: var(--brass); }
.values b { font: 600 24px/1.1 var(--serif); }
.values small { color: var(--muted-dark); font-size: 13px; }
.dodont { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr)); gap: 14px; }
.dodont > div { border-radius: var(--r); padding: 22px; border: 1px solid var(--line); }
.dodont .do { background: #E8EEE4; border-color: #C9D6C2; } .dodont .dont { background: #F4E3DC; border-color: #E5C6BA; }
.dodont h4 { margin: 0 0 12px; font: 500 12px/1 var(--mono); letter-spacing: .16em; text-transform: uppercase; }
.dodont .do h4 { color: var(--moss); } .dodont .dont h4 { color: var(--rust); }
.dodont ul { margin: 0; padding-left: 18px; display: grid; gap: 8px; font-size: 15px; }
.slogans { display: grid; gap: 14px; }
.slogans > div { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 22px; }
.slogans p { font: 600 clamp(20px, 2.4vw, 26px)/1.3 var(--serif); margin-top: 10px; }
.desc { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 20px 22px; }
.desc p { margin-top: 12px; font-size: 15.5px; }
.prod { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr)); gap: 14px; }
.prod article { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 22px; display: grid; gap: 10px; align-content: start; }
.prod .badge { width: fit-content; }
.prod .one { font: 500 17px/1.4 var(--serif); font-style: italic; }
.prod p:not(.one) { color: var(--muted); font-size: 14.5px; }
.prod small { color: var(--brass-ink); font-size: 13px; }
.ratio { display: flex; height: 18px; border-radius: 999px; overflow: hidden; border: 1px solid var(--line); }
.moods { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 12px; }
.moods img { width: 100%; height: 240px; object-fit: cover; border-radius: var(--r); }
@media (max-width: 700px) { .moods { grid-template-columns: 1fr 1fr; } .moods img:first-child { grid-column: 1 / -1; } .moods img { height: 180px; } }

.btn { white-space: nowrap; }
@media (max-width: 440px) { .nav .brand > span { display: none; } }