/* HÀ NAM AGENCY, bộ giao diện dùng chung cho mọi trang
   Bố cục: hồ sơ dịch vụ một cột, nhãn mục bên trái trên màn rộng; điểm nhấn là con dấu "đã duyệt" và thẻ báo cáo số liệu */
:root {
  --bg: #F3F6F5;
  --surface: #FFFFFF;
  --surface-2: #E7EFEE;
  --ink: #12292C;
  --muted: #55696B;
  --line: #D2DDDB;
  --brand: #0E4F57;
  --brand-ink: #FFFFFF;
  --brand-soft: #DCEBEA;
  --band: #0E4F57;
  --band-ink: #F3F6F5;
  --band-muted: #B7D1CF;
  --band-line: #2B666D;
  --gold: #E3B54E;
  --gold-ink: #2E2104;
  --gold-soft: #F8EDD2;
  --ok: #1E7A4C;
  --err: #B42318;
  --sample: #7A5200;
  --sample-bg: #FFF1CF;
  /* Màu nút theo nền tảng: nút chính của mỗi trang lấy màu nền tảng của trang đó */
  --fb: #0866FF; --fb-ink: #FFFFFF;
  --zalo: #0068FF; --zalo-soft: #E5F0FF; --zalo-text: #0050C8;
  --call: #12803D; --call-soft: #E3F4E9; --call-text: #0E6B33;
  --tiktok: #111111; --tiktok-ink: #FFFFFF;
  --shopee: #D73211; --google: #1A73E8;
  --warn: #9A4A00; --warn-soft: #FDEBD8;
  --cta: var(--gold); --cta-ink: var(--gold-ink);
  --f-display: "Fraunces", Georgia, "Times New Roman", serif;
  --f-body: "Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --f-data: "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --r: 10px;
  --maxw: 1120px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0B1A1C; --surface: #10262A; --surface-2: #153135; --ink: #E3EDEB; --muted: #9AAFAD; --line: #24413F;
    --brand: #72C2C3; --brand-ink: #06292C; --brand-soft: #173A3D;
    --band: #0F3135; --band-ink: #E3EDEB; --band-muted: #9FBDBB; --band-line: #2A5559;
    --gold: #E9C468; --gold-ink: #241A02; --gold-soft: #352B12;
    --ok: #5BC48C; --err: #FF8A80; --sample: #F2C96E; --sample-bg: #3A2E10;
    --zalo-soft: #0E2747; --zalo-text: #8AB8FF; --call-soft: #0F2E1C; --call-text: #7FD6A0;
    --tiktok: #F2F2F2; --tiktok-ink: #111111; --warn: #FFB870; --warn-soft: #3A2410;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0B1A1C; --surface: #10262A; --surface-2: #153135; --ink: #E3EDEB; --muted: #9AAFAD; --line: #24413F;
  --brand: #72C2C3; --brand-ink: #06292C; --brand-soft: #173A3D;
  --band: #0F3135; --band-ink: #E3EDEB; --band-muted: #9FBDBB; --band-line: #2A5559;
  --gold: #E9C468; --gold-ink: #241A02; --gold-soft: #352B12;
  --ok: #5BC48C; --err: #FF8A80; --sample: #F2C96E; --sample-bg: #3A2E10;
  --zalo-soft: #0E2747; --zalo-text: #8AB8FF; --call-soft: #0F2E1C; --call-text: #7FD6A0;
  --tiktok: #F2F2F2; --tiktok-ink: #111111; --warn: #FFB870; --warn-soft: #3A2410;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; animation: none !important; } }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: var(--f-body); font-size: 16px; line-height: 1.6;
}
body[data-platform="facebook"] { --cta: var(--fb); --cta-ink: var(--fb-ink); }
body[data-platform="shopee"] { --cta: var(--shopee); --cta-ink: #FFFFFF; }
body:has(.mobile-bar) { padding-bottom: calc(64px + env(safe-area-inset-bottom, 0px)); }
@media (min-width: 900px) { body:has(.mobile-bar) { padding-bottom: 0; } }
img, svg { max-width: 100%; }
a { color: var(--brand); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--gold); outline-offset: 2px; border-radius: 4px; }
h1, h2, h3 { font-family: var(--f-display); line-height: 1.15; margin: 0; text-wrap: balance; font-weight: 700; letter-spacing: -0.01em; }
h1 { font-size: clamp(2rem, 6vw, 3.4rem); }
h2 { font-size: clamp(1.6rem, 4vw, 2.3rem); }
h3 { font-size: 1.2rem; }
p { margin: 0; }
.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: 16px; }
@media (min-width: 640px) { .wrap { padding-inline: 24px; } }
.muted { color: var(--muted); }
.mono { font-family: var(--f-data); font-variant-numeric: tabular-nums; }
.eyebrow { font-size: 0.78rem; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: var(--brand); }
.lead { font-size: 1.12rem; color: var(--muted); max-width: 62ch; }
.stack { display: grid; gap: 16px; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* Ghi chú bản mẫu */
.demo-note { background: var(--sample-bg); color: var(--sample); font-size: 0.85rem; }
.demo-note .wrap { padding-block: 8px; display: flex; gap: 8px; align-items: flex-start; }
.demo-note strong { white-space: nowrap; }
.sample-tag {
  display: inline-block; font-family: var(--f-body); font-size: 0.7rem; font-weight: 700; letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--sample); background: var(--sample-bg); border: 1px dashed var(--sample);
  border-radius: 999px; padding: 1px 8px; vertical-align: middle; white-space: nowrap;
}

/* Đầu trang */
.site-header {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 50;
  background: color-mix(in srgb, var(--bg) 92%, transparent); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap { display: flex; align-items: center; gap: 16px; min-height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); margin-right: auto; }
.brand-mark { width: 40px; height: 40px; flex: none; }
.brand-name { font-family: var(--f-display); font-weight: 700; font-size: 1.1rem; line-height: 1.1; white-space: nowrap; }
.site-header .btn { white-space: nowrap; }
@media (max-width: 519px) { body:has(.mobile-bar) .site-header .btn { display: none; } }
@media (max-width: 519px) { .site-header .wrap { gap: 10px; } .site-header .btn-sm { padding: 0 12px; } .hide-xs { display: none; } }
@media (max-width: 419px) { .site-header .wrap { gap: 8px; } .site-header .btn-sm { padding: 0 10px; font-size: 0.85rem; } }
@media (max-width: 379px) { .brand { gap: 8px; } .brand-name { font-size: 1rem; } .brand-mark { width: 34px; height: 34px; } }
@media (max-width: 359px) { .site-header .btn { display: none; } }
.brand-name small { display: block; font-family: var(--f-body); font-weight: 500; font-size: 0.72rem; color: var(--muted); letter-spacing: 0.02em; }
.nav { display: none; gap: 20px; }
.nav a { color: var(--ink); text-decoration: none; font-weight: 500; font-size: 0.95rem; }
.nav a:hover { color: var(--brand); }
@media (min-width: 900px) { .nav { display: flex; align-items: center; } }

/* Menu Nền tảng xổ xuống */
.nav-drop { position: relative; }
.nav-drop-btn { display: inline-flex; align-items: center; gap: 4px; padding: 0; border: 0; background: none; color: var(--ink); font: 500 0.95rem/1.25 var(--f-body); cursor: pointer; }
.nav-drop-btn svg { width: 16px; height: 16px; transition: transform .15s ease; }
.nav-drop-btn:hover, .nav-drop-btn[aria-expanded="true"] { color: var(--brand); }
.nav-drop-btn[aria-expanded="true"] svg { transform: rotate(180deg); }
.nav-drop-btn:focus-visible, .menu-toggle:focus-visible, .nav .dd-item:focus-visible { outline: 3px solid var(--gold); outline-offset: 2px; }
.nav-drop-menu { position: absolute; top: calc(100% + 18px); left: -14px; z-index: 60; width: 320px; display: grid; gap: 2px; padding: 8px; background: var(--surface); border: 1px solid var(--line); border-radius: 14px; box-shadow: 0 22px 44px -22px rgba(0,0,0,.45); }
.nav-drop-menu[hidden] { display: none; }
.nav-drop-label { display: none; }
.nav .dd-item { display: grid; grid-template-columns: 10px 1fr; column-gap: 12px; padding: 10px 12px; border-radius: 10px; text-decoration: none; color: var(--ink); }
.nav .dd-item::before { content: ""; grid-row: 1 / span 2; align-self: center; width: 10px; height: 10px; border-radius: 50%; background: var(--pf, var(--brand)); }
.nav .dd-item b { font-weight: 600; font-size: 0.95rem; }
.nav .dd-item span { grid-column: 2; font-size: 0.82rem; color: var(--muted); }
.nav .dd-item:hover { background: var(--surface-2); color: var(--ink); }
.nav .dd-item[aria-current="page"] { background: var(--brand-soft); }
.dd-item.pf-facebook { --pf: var(--fb); } .dd-item.pf-shopee { --pf: var(--shopee); }
.dd-item.pf-tiktok { --pf: var(--tiktok); } .dd-item.pf-google { --pf: var(--google); }
.dd-sep { height: 1px; background: var(--line); margin: 6px 8px; }

/* Nút menu trên điện thoại */
.menu-toggle { display: inline-flex; align-items: center; justify-content: center; flex: none; width: 44px; height: 44px; border: 1px solid var(--line); border-radius: 10px; background: var(--surface); color: var(--ink); cursor: pointer; }
.menu-toggle svg { width: 22px; height: 22px; }
@media (min-width: 900px) { .menu-toggle { display: none; } }
@media (max-width: 899px) {
  .site-header.nav-open .nav {
    display: grid; position: absolute; top: 100%; left: 0; right: 0; gap: 0; padding: 4px 16px 16px;
    background: var(--bg); border-bottom: 1px solid var(--line); box-shadow: 0 24px 30px -24px rgba(0,0,0,.4);
    max-height: calc(100dvh - 64px); overflow-y: auto; overscroll-behavior: contain;
  }
  .site-header.nav-open .nav > a { padding: 14px 4px; border-top: 1px solid var(--line); font-size: 1rem; }
  .nav-drop-btn { display: none; }
  .nav-drop-menu, .nav-drop-menu[hidden] { position: static; display: grid !important; width: auto; padding: 0 0 8px; border: 0; border-radius: 0; box-shadow: none; background: none; }
  .nav-drop-label { display: block; margin: 12px 4px 4px; font-size: 0.75rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); }
  .nav .dd-item { padding: 10px 8px; }
}

/* Nút */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 48px;
  padding: 8px 20px; border-radius: 999px; border: 2px solid transparent; font: 600 1rem/1.25 var(--f-body); text-align: center;
  text-decoration: none; cursor: pointer; transition: transform .15s ease, background-color .15s ease;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--gold); color: var(--gold-ink); }
.btn-primary:hover { background: color-mix(in srgb, var(--gold) 88%, var(--ink)); }
.btn-brand { background: var(--brand); color: var(--brand-ink); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--brand); color: var(--brand); }
.btn-sm { min-height: 40px; padding: 0 16px; font-size: 0.92rem; }
.on-band .btn-ghost { color: var(--band-ink); border-color: var(--band-line); }
.on-band .btn-ghost:hover { border-color: var(--gold); color: var(--gold); }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; }
.btn svg { width: 20px; height: 20px; flex: none; }
.btn-cta { background: var(--cta); color: var(--cta-ink); }
.btn-cta:hover { filter: brightness(0.92); }
.on-band .btn-cta { box-shadow: 0 0 0 3px color-mix(in srgb, #FFFFFF 18%, transparent); }
.btn-fb { background: var(--fb); color: var(--fb-ink); }
.btn-tiktok { background: var(--tiktok); color: var(--tiktok-ink); box-shadow: -2px -2px 0 #25F4EE, 2px 2px 0 #FE2C55; }
.btn-shopee { background: var(--shopee); color: #FFFFFF; }
.btn-google { background: var(--google); color: #FFFFFF; }
.btn-fb:hover, .btn-tiktok:hover, .btn-shopee:hover, .btn-google:hover { filter: brightness(0.92); }
.btn-zalo { background: var(--zalo-soft); color: var(--zalo-text); }
.btn-zalo.solid { background: var(--zalo); color: #FFFFFF; }
.on-band .btn-zalo { background: #FFFFFF; color: #0057D9; }
.btn-call { background: var(--call-soft); color: var(--call-text); }
.btn-zalo:hover, .btn-call:hover { filter: brightness(0.95); }

/* Băng màu đầu trang (hero) */
.hero { background: var(--band); color: var(--band-ink); }
.hero .wrap { display: grid; gap: 32px; padding-block: 40px 48px; }
@media (min-width: 960px) { .hero .wrap { grid-template-columns: 1.15fr 0.85fr; align-items: center; padding-block: 64px 72px; } }
.hero .eyebrow { color: var(--gold); }
.hero h1 { color: var(--band-ink); }
.hero h1 em { font-style: normal; color: var(--gold); }
.hero .lead { color: var(--band-muted); }
.hero-copy { display: grid; gap: 20px; min-width: 0; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; margin: 0; padding: 0; }
.chips li { display: inline-flex; align-items: center; gap: 6px; font-size: 0.88rem; padding: 6px 12px; border-radius: 999px; border: 1px solid var(--band-line); color: var(--band-ink); }
.chips svg { width: 16px; height: 16px; color: var(--gold); flex: none; }

/* Thẻ báo cáo tuần */
.report { background: var(--surface); color: var(--ink); border-radius: 14px; padding: 20px; box-shadow: 0 18px 40px -20px rgba(0,0,0,.45); position: relative; min-width: 0; }
.report-head { display: flex; justify-content: space-between; gap: 12px; align-items: flex-start; border-bottom: 1px solid var(--line); padding-bottom: 12px; margin-bottom: 8px; }
.report-head p { font-size: 0.8rem; color: var(--muted); }
.report-head h3 { font-family: var(--f-body); font-size: 1rem; font-weight: 700; }
.report dl { margin: 0; display: grid; }
.report .row { display: flex; justify-content: space-between; gap: 12px; padding: 9px 0; border-bottom: 1px dashed var(--line); font-size: 0.93rem; }
.report dt { color: var(--muted); }
.report dd { margin: 0; font-family: var(--f-data); font-variant-numeric: tabular-nums; font-weight: 500; text-align: right; }
.report .delta { font-size: 0.78rem; margin-left: 6px; }
.report .delta.up { color: var(--ok); }
.report .next { margin-top: 12px; font-size: 0.85rem; background: var(--surface-2); border-radius: 8px; padding: 10px 92px 10px 12px; min-height: 64px; }
.stamp {
  position: absolute; right: 8px; bottom: -20px; width: 86px; height: 86px; border-radius: 50%;
  border: 3px double var(--gold); color: var(--gold); display: grid; place-items: center; text-align: center;
  font: 800 0.72rem/1.2 var(--f-body); letter-spacing: 0.08em; text-transform: uppercase;
  transform: rotate(-12deg); background: color-mix(in srgb, var(--surface) 70%, transparent);
}

/* Mục nội dung */
.section { padding-block: 56px; }
@media (min-width: 900px) { .section { padding-block: 80px; } }
.section + .section { border-top: 1px solid var(--line); }
.section-head { display: grid; gap: 12px; margin-bottom: 32px; max-width: 760px; }
.section.alt { background: var(--surface); }

.facts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; }
@media (min-width: 800px) { .facts { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
.fact { background: var(--surface); padding: 18px 16px; display: grid; gap: 4px; }
.fact b { font-family: var(--f-display); font-size: 1.9rem; line-height: 1; color: var(--brand); }
.fact span { font-size: 0.9rem; color: var(--muted); }

.grid { display: grid; gap: 16px; }
@media (min-width: 720px) { .grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); } .grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (min-width: 720px) and (max-width: 1023px) { .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); } .grid-3 > :last-child:nth-child(odd) { grid-column: 1 / -1; } }
@media (min-width: 1024px) { .grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); } }

.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 20px; display: grid; gap: 10px; align-content: start; min-width: 0; }
.section.alt .card { background: var(--bg); }
.card .icon { width: 40px; height: 40px; border-radius: 10px; display: grid; place-items: center; background: var(--brand-soft); color: var(--brand); }
.card .icon svg { width: 22px; height: 22px; }

.pain { display: grid; gap: 12px; }
.pain .problem { font-weight: 700; font-size: 1.05rem; }
.pain .answer { border-top: 1px solid var(--line); padding-top: 12px; color: var(--muted); }
.pain .answer b { color: var(--ink); }

.checklist { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.checklist li { display: grid; grid-template-columns: 22px 1fr; gap: 10px; }
.checklist svg { width: 22px; height: 22px; color: var(--ok); margin-top: 2px; }

/* Quy trình */
.steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 16px; counter-reset: step; }
@media (min-width: 900px) { .steps { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
.step { counter-increment: step; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 20px; display: grid; gap: 8px; align-content: start; position: relative; min-width: 0; }
.section.alt .step { background: var(--bg); }
.step::before { content: counter(step); font-family: var(--f-data); font-size: 0.85rem; font-weight: 500; color: var(--brand); }
.step .when { font-size: 0.8rem; font-weight: 700; color: var(--muted); letter-spacing: 0.04em; text-transform: uppercase; }
.mini-stamp { justify-self: start; display: inline-flex; align-items: center; gap: 6px; font-size: 0.75rem; font-weight: 800; letter-spacing: 0.08em; text-transform: uppercase; color: var(--gold-ink); background: var(--gold); border-radius: 4px; padding: 3px 8px; transform: rotate(-2deg); }

/* Kết quả mẫu */
.case { display: grid; gap: 14px; }
.case-top { display: flex; justify-content: space-between; gap: 10px; align-items: flex-start; flex-wrap: wrap; }
.case-metrics { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
.metric { background: var(--surface-2); border-radius: 8px; padding: 10px 12px; display: grid; gap: 2px; }
.metric b { font-family: var(--f-data); font-variant-numeric: tabular-nums; font-size: 1.15rem; }
.metric span { font-size: 0.78rem; color: var(--muted); }
.case .miss { font-size: 0.9rem; border-left: 3px solid var(--gold); padding-left: 10px; color: var(--muted); }
.case .miss b { color: var(--ink); }

/* Bảng giá */
.plans { display: grid; gap: 16px; }
@media (min-width: 960px) { .plans { grid-template-columns: repeat(3, minmax(0, 1fr)); align-items: stretch; } }
.plan { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 24px; display: grid; gap: 14px; align-content: start; position: relative; }
.plan.featured { border: 2px solid var(--brand); }
.plan .badge { position: absolute; top: -12px; left: 20px; background: var(--brand); color: var(--brand-ink); font-size: 0.75rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; padding: 3px 10px; border-radius: 999px; }
.plan .price { font-family: var(--f-display); font-size: 2rem; line-height: 1.1; }
.plan .price small { font-family: var(--f-body); font-size: 0.9rem; color: var(--muted); font-weight: 500; }
.plan .fit { font-size: 0.9rem; color: var(--muted); }
.plan .btn { width: 100%; margin-top: auto; }
.price-notes { margin-top: 20px; display: grid; gap: 8px; font-size: 0.92rem; color: var(--muted); }

.calc { margin-top: 24px; background: var(--band); color: var(--band-ink); border-radius: 14px; padding: 24px; display: grid; gap: 18px; }
@media (min-width: 860px) { .calc { grid-template-columns: 1fr 1fr; align-items: center; } }
.calc label { font-weight: 600; }
.calc input[type="range"] { width: 100%; accent-color: var(--gold); }
.calc .budget { font-family: var(--f-data); font-size: 1.6rem; color: var(--gold); }
.calc dl { margin: 0; display: grid; gap: 8px; }
.calc .row { display: flex; justify-content: space-between; gap: 12px; border-bottom: 1px solid var(--band-line); padding-bottom: 8px; }
.calc dt { color: var(--band-muted); }
.calc dd { margin: 0; font-family: var(--f-data); font-variant-numeric: tabular-nums; text-align: right; }
.calc .total dd { color: var(--gold); font-size: 1.15rem; }
.calc p { font-size: 0.85rem; color: var(--band-muted); }
.calc .range-ends { display: flex; justify-content: space-between; font-size: 0.78rem; margin-top: -8px; }

/* Nhận xét */
.quote { display: grid; gap: 12px; }
.quote blockquote { margin: 0; font-size: 1.02rem; }
.quote figcaption { font-size: 0.88rem; color: var(--muted); }
.quote figcaption b { color: var(--ink); }

/* Người phụ trách */
.founder { display: grid; gap: 24px; align-items: center; }
@media (min-width: 800px) { .founder { grid-template-columns: 220px 1fr; } }
.avatar { width: 180px; aspect-ratio: 1; max-width: 100%; border-radius: 50%; background: var(--brand-soft); color: var(--brand); display: grid; place-items: center; font: 700 4rem/1 var(--f-display); border: 3px double var(--gold); position: relative; }
img.avatar { height: auto; object-fit: cover; background: var(--brand-soft); }
.avatar small { position: absolute; bottom: 8px; font: 600 0.68rem/1.2 var(--f-body); color: var(--muted); text-align: center; width: 80%; }

/* Quà tặng */
.gift { background: var(--gold-soft); border: 1px solid color-mix(in srgb, var(--gold) 50%, var(--line)); border-radius: 14px; padding: 24px; display: grid; gap: 20px; }
@media (min-width: 860px) { .gift { grid-template-columns: 1fr 1fr; } }
.gift-item { display: grid; gap: 8px; align-content: start; }
.gift-item h3 { display: flex; gap: 10px; align-items: baseline; }
.gift-item .tag { font-family: var(--f-body); font-size: 0.75rem; font-weight: 700; color: var(--gold-ink); background: var(--gold); border-radius: 4px; padding: 2px 8px; white-space: nowrap; }
.peek { list-style: none; margin: 4px 0 0; padding: 0; display: grid; gap: 6px; font-size: 0.92rem; }
.peek li { display: grid; grid-template-columns: 18px 1fr; gap: 8px; }
.peek li::before { content: ""; width: 14px; height: 14px; border: 2px solid var(--brand); border-radius: 3px; margin-top: 5px; }

/* Hỏi đáp */
.faq { display: grid; gap: 10px; max-width: 820px; }
.faq details { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 4px 18px; }
.section.alt .faq details { background: var(--bg); }
.faq summary { cursor: pointer; font-weight: 600; padding: 12px 0; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-family: var(--f-data); color: var(--brand); font-size: 1.2rem; line-height: 1; }
.faq details[open] summary::after { content: "−"; }
.faq details p { padding-bottom: 14px; color: var(--muted); }

/* Form đăng ký */
.signup { display: grid; gap: 28px; }
@media (min-width: 960px) { .signup { grid-template-columns: 0.9fr 1.1fr; align-items: start; } }
.form-card { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 20px; display: grid; gap: 16px; min-width: 0; }
@media (min-width: 640px) { .form-card { padding: 28px; } }
.field { display: grid; gap: 6px; }
.field label, .field legend { font-weight: 600; font-size: 0.95rem; }
.field .hint { font-size: 0.82rem; color: var(--muted); }
.req { color: var(--err); }
.field input[type="text"], .field input[type="tel"], .field input[type="email"], .field input[type="url"], .field select, .field textarea {
  width: 100%; min-height: 48px; padding: 10px 14px; border: 1px solid var(--line); border-radius: 8px;
  background: var(--bg); color: var(--ink); font: 400 1rem/1.4 var(--f-body);
}
.field input:focus, .field select:focus { border-color: var(--brand); outline: 2px solid color-mix(in srgb, var(--brand) 30%, transparent); }
.field[data-invalid] input, .field[data-invalid] select { border-color: var(--err); }
.field .error { color: var(--err); font-size: 0.85rem; min-height: 0; }
.field-row { display: grid; gap: 16px; }
@media (min-width: 640px) { .field-row { grid-template-columns: 1fr 1fr; } }
fieldset { border: 0; margin: 0; padding: 0; min-width: 0; }
.choices { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; }
.choice { position: relative; }
.choice input { position: absolute; opacity: 0; inset: 0; cursor: pointer; }
.choice span { display: inline-flex; align-items: center; min-height: 40px; padding: 0 14px; border: 1px solid var(--line); border-radius: 999px; font-size: 0.92rem; background: var(--bg); }
.choice input:checked + span { background: var(--brand); color: var(--brand-ink); border-color: var(--brand); }
.choice input:focus-visible + span { outline: 3px solid var(--gold); outline-offset: 2px; }
.consent { display: grid; grid-template-columns: 22px 1fr; gap: 10px; font-size: 0.9rem; align-items: start; }
.consent input { width: 20px; height: 20px; margin: 2px 0 0; accent-color: var(--brand); }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-status { font-size: 0.92rem; border-radius: 8px; padding: 10px 12px; }
.form-status[data-kind="error"] { background: color-mix(in srgb, var(--err) 12%, var(--surface)); color: var(--err); }
.form-status[data-kind="info"] { background: var(--surface-2); color: var(--ink); }
.submit-row { display: grid; gap: 10px; }
.submit-row .btn { width: 100%; }
.submit-row p { font-size: 0.85rem; color: var(--muted); text-align: center; }
.contact-lines { display: grid; gap: 10px; font-size: 0.95rem; }
.contact-lines div { display: grid; grid-template-columns: 96px 1fr; gap: 8px; }
.contact-lines dt { color: var(--muted); }
.contact-lines dd { margin: 0; font-weight: 600; overflow-wrap: anywhere; }

/* Nền tảng (trang chủ) */
.platform { display: grid; gap: 12px; }
.platform .status { justify-self: start; font-size: 0.75rem; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase; border-radius: 999px; padding: 2px 10px; }
.platform .status.live { background: color-mix(in srgb, var(--ok) 16%, var(--surface)); color: var(--ok); }
.platform .status.soon { background: var(--surface-2); color: var(--muted); }
.platform .from { font-family: var(--f-data); font-size: 0.9rem; }
.platform .btn { justify-self: start; }
.platform { border-top: 4px solid var(--pf, var(--line)); }
.platform.pf-facebook { --pf: var(--fb); } .platform.pf-tiktok { --pf: var(--tiktok); }
.platform.pf-shopee { --pf: var(--shopee); } .platform.pf-google { --pf: var(--google); }
.tags { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; padding: 0; margin: 0; }
.tags li { border: 1px solid var(--line); border-radius: 999px; padding: 6px 12px; font-size: 0.9rem; background: var(--surface); }

/* Checklist (trang quà) */
.progress { position: sticky; top: calc(64px + env(safe-area-inset-top, 0px)); z-index: 10; background: var(--bg); padding-block: 12px; border-bottom: 1px solid var(--line); }
.progress .bar { height: 10px; border-radius: 999px; background: var(--surface-2); overflow: hidden; }
.progress .bar i { display: block; height: 100%; width: 0; background: var(--gold); transition: width .25s ease; }
.progress p { font-size: 0.9rem; margin-top: 6px; display: flex; justify-content: space-between; gap: 12px; }
.ck-group { display: grid; gap: 12px; }
.ck-group h2 { font-size: 1.35rem; }
.ck-item { display: grid; grid-template-columns: 26px 1fr; gap: 12px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 14px 16px; cursor: pointer; }
.ck-item input { width: 22px; height: 22px; margin: 2px 0 0; accent-color: var(--brand); }
.ck-item b { display: block; }
.ck-item span { color: var(--muted); font-size: 0.92rem; }
.ck-item:has(input:checked) { border-color: var(--brand); background: color-mix(in srgb, var(--brand-soft) 50%, var(--surface)); }

/* Trang cảm ơn, chính sách */
.thanks { display: grid; gap: 24px; max-width: 760px; }
.next-steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; counter-reset: n; }
.next-steps li { counter-increment: n; display: grid; grid-template-columns: 36px 1fr; gap: 12px; align-items: start; }
.next-steps li::before { content: counter(n); width: 32px; height: 32px; border-radius: 50%; background: var(--brand); color: var(--brand-ink); display: grid; place-items: center; font-family: var(--f-data); font-weight: 500; }
.prose { max-width: 72ch; display: grid; gap: 14px; }
.prose h2 { font-size: 1.5rem; margin-top: 20px; }
.prose h3 { font-size: 1.1rem; margin-top: 8px; }
.prose ul { margin: 0; padding-left: 20px; display: grid; gap: 6px; }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--r); }
.table-wrap table { border-collapse: collapse; width: 100%; min-width: 560px; font-size: 0.92rem; }
.table-wrap th, .table-wrap td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.table-wrap th { background: var(--surface-2); }

/* Chân trang */
.site-footer { background: var(--band); color: var(--band-muted); font-size: 0.9rem; }
.site-footer .wrap { padding-block: 40px; display: grid; gap: 24px; }
@media (min-width: 860px) { .site-footer .wrap { grid-template-columns: 1.4fr 1fr 1fr; } }
.site-footer h3 { color: var(--band-ink); font-family: var(--f-body); font-size: 0.95rem; margin-bottom: 8px; }
.site-footer a { color: var(--band-ink); }
.site-footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.site-footer .legal { grid-column: 1 / -1; border-top: 1px solid var(--band-line); padding-top: 16px; font-size: 0.82rem; }
.site-footer .brand { color: var(--band-ink); }
.site-footer .brand-name small { color: var(--band-muted); }

/* Thanh liên hệ cố định trên điện thoại */
.mobile-bar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 60; display: grid; grid-template-columns: 1fr 1fr 1.4fr; gap: 8px;
  padding: 8px 12px calc(8px + env(safe-area-inset-bottom, 0px)); background: var(--surface); border-top: 1px solid var(--line);
}
.mobile-bar .btn svg { width: 18px; height: 18px; }
.mobile-bar .btn { min-height: 44px; padding: 0 10px; font-size: 0.92rem; }
@media (min-width: 900px) { .mobile-bar { display: none; } }

/* Nút liên hệ nổi */
.float-contact {
  position: fixed; right: 16px; bottom: calc(16px + env(safe-area-inset-bottom, 0px)); z-index: 55;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 52px; min-width: 52px;
  padding: 0 14px; border: 0; border-radius: 999px; background: var(--zalo); color: #FFFFFF;
  font: 600 0.98rem/1 var(--f-body); cursor: pointer; box-shadow: 0 12px 30px -10px rgba(0,0,0,.45);
}
.float-contact svg { width: 24px; height: 24px; flex: none; }
.float-contact span { display: none; }
.float-contact:hover { filter: brightness(0.95); }
.float-contact:focus-visible { outline: 3px solid var(--gold); outline-offset: 3px; }
body:has(.mobile-bar) .float-contact { display: none; }
@media (min-width: 900px) {
  .float-contact { right: 24px; bottom: 24px; padding: 0 22px 0 18px; }
  .float-contact span { display: inline; }
  body:has(.mobile-bar) .float-contact { display: inline-flex; }
}
html.cs-open .float-contact { display: none; }
/* Chừa chỗ cuối trang để nút nổi không che chữ ở chân trang */
body:has(.float-contact):not(:has(.mobile-bar)) .site-footer .wrap { padding-bottom: 96px; }
@media (min-width: 900px) { body:has(.float-contact) .site-footer .wrap { padding-bottom: 96px; } }

/* Giai đoạn của khách */
.stages { display: grid; gap: 16px; }
@media (min-width: 900px) { .stages { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
.stage { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 20px; display: grid; gap: 10px; align-content: start; min-width: 0; }
.stage .no { font-family: var(--f-data); font-size: 0.8rem; color: var(--brand); letter-spacing: 0.06em; }
.stage .go { font-weight: 700; text-decoration: none; margin-top: 4px; }
.stage .go::after, .go-link::after { content: " →"; }
.go-link { font-weight: 700; text-decoration: none; justify-self: start; }

/* Tự kiểm tra đo lường */
.quiz { display: grid; gap: 20px; }
@media (min-width: 960px) { .quiz { grid-template-columns: 1.4fr 1fr; align-items: start; } }
.quiz-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; counter-reset: q; min-width: 0; }
.q { counter-increment: q; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 16px; display: grid; gap: 8px; }
.section.alt .q { background: var(--bg); }
.q .term { justify-self: start; font-size: 0.75rem; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase; color: var(--brand); background: var(--brand-soft); border-radius: 4px; padding: 2px 8px; }
.q .term::before { content: counter(q) " · "; font-family: var(--f-data); }
.q h3 { font-family: var(--f-body); font-size: 1.02rem; font-weight: 700; line-height: 1.4; }
.q p { font-size: 0.9rem; color: var(--muted); }
.q[data-answer="yes"] { border-color: var(--ok); }
.q[data-answer="no"], .q[data-answer="unsure"] { border-color: var(--warn); }
.quiz-result { position: sticky; top: calc(76px + env(safe-area-inset-top, 0px)); background: var(--band); color: var(--band-ink); border-radius: 14px; padding: 22px; display: grid; gap: 12px; }
.quiz-result .score { font-family: var(--f-data); font-size: 2.4rem; line-height: 1; color: var(--gold); }
.quiz-result .score small { font-family: var(--f-body); font-size: 1rem; color: var(--band-ink); margin-left: 6px; }
.quiz-result .meter { height: 10px; border-radius: 999px; background: var(--band-line); overflow: hidden; }
.quiz-result .meter i { display: block; height: 100%; width: 0; background: var(--gold); border-radius: 999px; transition: width .25s ease; }
.quiz-result p { color: var(--band-muted); font-size: 0.95rem; }
.quiz-result b { color: var(--band-ink); }
.quiz-result .btn { width: 100%; }

/* Tăng ngân sách */
.scale { display: grid; gap: 24px; }
@media (min-width: 960px) { .scale { grid-template-columns: 1fr 1fr; align-items: start; } }
.signs { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.signs li { display: grid; grid-template-columns: 22px 1fr; gap: 10px; }
.signs svg { width: 22px; height: 22px; color: var(--warn); margin-top: 2px; }
.how { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; counter-reset: h; }
.how li { counter-increment: h; display: grid; grid-template-columns: 34px 1fr; gap: 12px; }
.how li::before { content: counter(h); width: 30px; height: 30px; border-radius: 50%; background: var(--brand); color: var(--brand-ink); display: grid; place-items: center; font-family: var(--f-data); font-size: 0.9rem; }
.how b { display: block; }
.how span { color: var(--muted); font-size: 0.93rem; }
.log { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 20px; display: grid; gap: 12px; min-width: 0; }
.section.alt .log { background: var(--bg); }
.log-head { display: flex; justify-content: space-between; gap: 12px; align-items: flex-start; }
.log-head h3 { font-family: var(--f-body); font-size: 1rem; font-weight: 700; }
.log-head p { font-size: 0.8rem; color: var(--muted); }
.log-scroll { overflow-x: auto; }
.log table { width: 100%; border-collapse: collapse; font-size: 0.86rem; min-width: 300px; }
.log th { text-align: left; font-weight: 600; color: var(--muted); font-size: 0.75rem; padding: 6px 6px; border-bottom: 1px solid var(--line); }
.log td { padding: 7px 6px; border-bottom: 1px dashed var(--line); font-family: var(--f-data); font-variant-numeric: tabular-nums; white-space: nowrap; }
.log td.bar { width: 34%; }
.log td.bar i { display: block; height: 10px; border-radius: 0 4px 4px 0; background: var(--brand); }
.log th.num, .log td.num { text-align: right; }
.log tr.over td { background: var(--warn-soft); }
.log tr.over td.bar i { background: var(--warn); }
.log .legend { display: flex; align-items: center; gap: 8px; font-size: 0.8rem; color: var(--muted); }
.log .legend i { width: 14px; height: 10px; border-radius: 0 3px 3px 0; background: var(--warn); }
.log .sum { font-size: 0.9rem; }
.log .miss { font-size: 0.88rem; border-left: 3px solid var(--warn); padding-left: 10px; color: var(--muted); }
.log .miss b { color: var(--ink); }

/* Tài khoản và dữ liệu */
.option { display: grid; gap: 10px; }
.option-group { font-size: 1.15rem; margin: 4px 0 12px; }
.grid + .option-group { margin-top: 28px; }
.option .tag-line { font-size: 0.78rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
.option .fit { font-size: 0.9rem; background: var(--surface-2); border-radius: 8px; padding: 8px 12px; }
.both { margin-top: 16px; background: var(--brand-soft); border-radius: 14px; padding: 20px; display: grid; gap: 12px; }
.both h3 { font-size: 1.1rem; }
@media (min-width: 860px) { .both .checklist { grid-template-columns: 1fr 1fr; column-gap: 24px; } }

/* Ghi chú vì sao số liệu là minh họa */
.why-sample { display: grid; grid-template-columns: 28px 1fr; gap: 12px; background: var(--sample-bg); color: var(--ink); border: 1px dashed var(--sample); border-radius: 12px; padding: 16px 18px; margin-bottom: 20px; max-width: 900px; }
.why-sample svg { width: 26px; height: 26px; color: var(--sample); }
.why-sample h3 { font-family: var(--f-body); font-size: 1rem; font-weight: 700; margin-bottom: 4px; }
.why-sample p { font-size: 0.93rem; }
.why-sample p + p { margin-top: 6px; }
a.sample-tag { text-decoration: none; }

/* Mô phỏng tin nhắn Zalo */
.week { display: grid; gap: 24px; }
@media (min-width: 900px) { .week { grid-template-columns: 1fr 1fr; align-items: start; } }
.chat { background: var(--surface-2); border: 1px solid var(--line); border-radius: 18px; padding: 16px; display: grid; gap: 8px; max-width: 460px; width: 100%; min-width: 0; }
.chat-head { display: flex; justify-content: space-between; align-items: center; gap: 10px; padding-bottom: 8px; border-bottom: 1px solid var(--line); }
.chat-head b { font-size: 0.95rem; }
.chat .day { justify-self: center; font-size: 0.72rem; font-weight: 700; color: var(--muted); background: var(--surface); border-radius: 999px; padding: 2px 10px; margin-top: 4px; }
.msg { max-width: 86%; padding: 9px 12px; border-radius: 14px; font-size: 0.9rem; line-height: 1.45; }
.msg.out { justify-self: start; background: var(--surface); border: 1px solid var(--line); border-bottom-left-radius: 4px; }
.msg.in { justify-self: end; background: var(--zalo-soft); color: var(--ink); border-bottom-right-radius: 4px; }
.msg small { display: block; font-size: 0.72rem; color: var(--muted); margin-bottom: 2px; font-weight: 600; }
.msg .file { display: inline-flex; gap: 6px; align-items: center; margin-top: 6px; font-family: var(--f-data); font-size: 0.78rem; background: var(--surface-2); border-radius: 6px; padding: 3px 8px; }

/* Dải tin cậy: điều kiểm chứng được */
.trust-line { display: flex; flex-wrap: wrap; gap: 8px 20px; margin-top: 16px; font-size: 0.9rem; color: var(--muted); list-style: none; padding: 0; }
.trust-line li { display: inline-flex; align-items: center; gap: 8px; }
.trust-line svg { width: 18px; height: 18px; color: var(--ok); flex: none; }
.trust-line b { color: var(--ink); font-weight: 600; }

/* Đăng ký nhanh 2 ô */
.quick { display: grid; gap: 24px; }
@media (min-width: 960px) { .quick { grid-template-columns: 1fr 1fr; align-items: center; } }
.quick .form-card .field-row { align-items: start; }
.gets { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.gets li { display: grid; grid-template-columns: 22px 1fr; gap: 10px; }
.gets svg { width: 22px; height: 22px; color: var(--ok); margin-top: 2px; }
.gets b { display: block; }
.gets span { color: var(--muted); font-size: 0.93rem; }

/* Thu gọn trên điện thoại */
.is-collapsed { grid-auto-rows: max-content; max-height: 240px; overflow: hidden; position: relative; -webkit-mask-image: linear-gradient(#000 60%, transparent); mask-image: linear-gradient(#000 60%, transparent); }
.more-toggle { display: block; margin: 12px auto 0; min-height: 44px; padding: 0 20px; border-radius: 999px; border: 1px solid var(--line); background: var(--surface); color: var(--brand); font: 600 0.95rem/1 var(--f-body); cursor: pointer; }
.more-toggle:hover { border-color: var(--brand); }
@media (min-width: 900px) { .more-toggle { display: none; } }

/* Khung liên hệ Zalo */
.cs-open, .cs-open body { overflow: hidden; }
.contact-sheet { position: fixed; inset: 0; z-index: 100; display: grid; align-items: end; justify-items: center; }
.contact-sheet[hidden] { display: none; }
.cs-backdrop { position: absolute; inset: 0; background: rgba(6, 20, 22, 0.55); }
.cs-panel { position: relative; width: 100%; max-width: 440px; background: var(--surface); color: var(--ink); border-radius: 18px 18px 0 0; padding: 18px 16px calc(18px + env(safe-area-inset-bottom, 0px)); display: grid; gap: 14px; box-shadow: 0 -10px 40px -10px rgba(0,0,0,.4); }
@media (min-width: 640px) { .contact-sheet { align-items: center; } .cs-panel { border-radius: 18px; padding: 24px; } }
.cs-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.cs-head h2 { font-size: 1.2rem; }
.cs-x { width: 40px; height: 40px; border-radius: 50%; border: 1px solid var(--line); background: var(--bg); color: var(--ink); font-size: 1.4rem; line-height: 1; cursor: pointer; flex: none; }
.cs-qr { display: grid; grid-template-columns: 176px 1fr; gap: 14px; align-items: center; }
.cs-qr img { width: 176px; height: 176px; background: #FFFFFF; border-radius: 10px; padding: 8px; border: 1px solid var(--line); }
.cs-qr p { font-size: 0.9rem; color: var(--muted); }
@media (max-width: 420px) { .cs-qr { grid-template-columns: 1fr; justify-items: center; text-align: center; } }
.cs-actions { display: grid; gap: 10px; }
.cs-actions .btn { width: 100%; }
.cs-note { font-size: 0.85rem; color: var(--muted); }
.cs-toast { font-size: 0.92rem; background: color-mix(in srgb, var(--ok) 14%, var(--surface)); color: var(--ok); border-radius: 8px; padding: 10px 12px; }

/* Bổ sung thông tin ở trang cảm ơn */
.details-box { border: 2px solid var(--brand); }
.form-done { font-weight: 600; color: var(--ok); }

/* ===== Tính thử phí: ô nhập số tiền (dùng chung các trang nền tảng) ===== */
.calc .calc-title { font-family: var(--f-body); font-size: 1.15rem; font-weight: 700; color: var(--band-ink); }
.calc .amount { display: flex; align-items: baseline; gap: 8px; background: color-mix(in srgb, #FFFFFF 7%, transparent); border: 1px solid var(--band-line); border-radius: 10px; padding: 6px 12px; }
.calc .amount:focus-within { outline: 3px solid var(--gold); outline-offset: 2px; }
.calc .amount input { flex: 1; min-width: 0; width: 100%; background: transparent; border: 0; padding: 0; color: var(--gold); font-family: var(--f-data); font-size: 1.6rem; font-variant-numeric: tabular-nums; outline: none; }
.calc .amount input::placeholder { color: var(--band-muted); opacity: .7; }
.calc .amount span { color: var(--band-muted); font-size: 0.9rem; white-space: nowrap; }
.calc .range-label { font-size: 0.85rem; color: var(--band-muted); font-weight: 500; margin-bottom: -6px; }
.calc .calc-note { color: var(--band-ink); background: color-mix(in srgb, var(--gold) 18%, transparent); border-left: 3px solid var(--gold); border-radius: 6px; padding: 8px 10px; }

/* ===== Cách tính mức hòa vốn (trang Shopee) ===== */
.breakeven { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 18px 20px; margin-bottom: 20px; display: grid; gap: 10px; }
.breakeven-head { display: flex; justify-content: space-between; gap: 12px; align-items: flex-start; flex-wrap: wrap; }
.breakeven-head h3 { font-family: var(--f-body); font-size: 1rem; font-weight: 700; }
.breakeven dl { margin: 0; display: grid; }
.breakeven .row { display: flex; justify-content: space-between; gap: 12px; padding: 8px 0; border-bottom: 1px dashed var(--line); font-size: 0.93rem; }
.breakeven dt { color: var(--muted); }
.breakeven dd { margin: 0; font-family: var(--f-data); font-variant-numeric: tabular-nums; text-align: right; }
.breakeven .result { border-bottom: 0; }
.breakeven .result dt { color: var(--ink); font-weight: 700; }
.breakeven .result dd { color: var(--brand); font-weight: 700; font-size: 1.1rem; }
.breakeven p { font-size: 0.93rem; }
@media (min-width: 860px) { .breakeven { grid-template-columns: 1fr 1fr; column-gap: 28px; align-items: start; } .breakeven-head { grid-column: 1 / -1; } }

/* ===== Checklist có tab theo nền tảng ===== */
.ck-tabs { display: flex; gap: 8px; margin-bottom: 10px; }
.ck-tabs button { flex: 1 1 0; min-height: 44px; border: 1px solid var(--line); background: var(--surface); color: var(--ink); border-radius: 999px; padding: 8px 16px; font: 600 0.95rem var(--f-body); cursor: pointer; }
.ck-tabs button[aria-selected="true"] { background: var(--brand); color: var(--brand-ink); border-color: var(--brand); }
@media (min-width: 640px) { .ck-tabs button { flex: 0 0 auto; min-width: 150px; } }
/* ===== Mục Kiến thức (bài viết dựng bằng Jekyll) ===== */
.crumbs { font-size: 0.85rem; color: var(--muted); margin-bottom: 20px; display: flex; flex-wrap: wrap; gap: 6px; }
.crumbs a { color: inherit; }
.post-head { display: grid; gap: 14px; max-width: 760px; margin-bottom: 32px; }
.post-head h1 { font-size: clamp(1.9rem, 5vw, 2.8rem); }
.post-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 10px; font-size: 0.9rem; color: var(--muted); }
.post-meta img { width: 40px; height: 40px; border-radius: 50%; object-fit: cover; border: 2px solid var(--gold); }
.post-tag { display: inline-block; padding: 3px 10px; border-radius: 999px; background: var(--brand-soft); color: var(--brand); font-size: 0.78rem; font-weight: 600; }
.prose { max-width: 720px; font-size: 1.06rem; line-height: 1.75; }
.prose > * { margin: 0 0 1em; }
.prose h2 { font-size: clamp(1.35rem, 3.4vw, 1.7rem); margin: 1.9em 0 0.6em; }
.prose h3 { font-size: 1.18rem; margin: 1.5em 0 0.5em; }
.prose ul, .prose ol { padding-left: 1.3em; }
.prose li { margin: 0.4em 0; }
.prose a { color: var(--brand); text-underline-offset: 3px; }
.prose blockquote { margin: 1.4em 0; padding: 14px 18px; border-left: 4px solid var(--gold); background: var(--surface-2); border-radius: 0 var(--r) var(--r) 0; }
.prose blockquote p { margin: 0 0 0.6em; } .prose blockquote p:last-child { margin: 0; }
.prose table { display: block; width: 100%; overflow-x: auto; border-collapse: collapse; font-size: 0.95rem; margin: 1.4em 0; }
.prose th, .prose td { border: 1px solid var(--line); padding: 9px 12px; text-align: left; vertical-align: top; min-width: 140px; }
.prose th { background: var(--surface-2); font-weight: 600; }
@media (max-width: 599px) { .prose th, .prose td { min-width: 0; padding: 8px; font-size: 0.9rem; } }
.post-cta { max-width: 720px; margin-top: 40px; padding: 24px; border: 1px solid var(--line); border-left: 4px solid var(--brand); border-radius: var(--r); background: var(--surface); display: grid; gap: 12px; }
.post-cta h2 { font-size: 1.35rem; }
.post-cta p { margin: 0; }
.post-more { margin-top: 48px; display: grid; gap: 16px; }
.post-more h2 { font-size: 1.35rem; }
.post-list { display: grid; gap: 16px; }
@media (min-width: 760px) { .post-list { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
.post-card { display: grid; gap: 10px; align-content: start; padding: 20px; border: 1px solid var(--line); border-radius: var(--r); background: var(--surface); color: var(--ink); text-decoration: none; min-width: 0; }
.section.alt .post-card { background: var(--bg); }
.post-card b { font-family: var(--f-display); font-size: 1.15rem; line-height: 1.3; }
.post-card .post-tag { justify-self: start; }
.post-card:hover { border-color: var(--brand); }
.post-card:hover b { color: var(--brand); }
.post-card:focus-visible { outline: 3px solid var(--gold); outline-offset: 2px; }
.post-date { font-size: 0.85rem; color: var(--muted); }
@media print { .ck-tabs, .site-header, .mobile-bar, .float-contact, .post-cta, .post-more { display: none !important; } .progress { position: static; } }