/* ==========================================================================
   Adscheck Landing Page Demo — Styles
   Tokens kế thừa từ design-system-adscheck (Phần II)
   ========================================================================== */
@import url("./assets/fonts/fonts.css");

:root {
  /* Brand */
  --green: #07b77a;
  --green-text: #007558;          /* AA-compliant green for small text on white (5.9:1) */
  --green-soft: rgba(7, 183, 122, 0.08);
  --green-soft-2: rgba(7, 183, 122, 0.12);
  --green-active-bg: #d8f0e6;  /* solid sidebar-item active bg — pairs w/ --green-text for AA */
  --warn-text: #8a5a00;        /* AA amber on white (5.5:1) — replaces #f0b10d for small text */
  --danger-text: #c8131e;      /* AA red on white (5.4:1) — replaces #ec1723 for small text */
  --gradient-start: #17E180;
  --gradient-end: #009883;
  --gradient-brand: linear-gradient(166.86deg, #17E180 -19.24%, #009883 125.35%);
  --gradient-smit: linear-gradient(103.17deg, #44C3F9 -6.17%, #27E4A0 104.04%);

  /* Neutrals */
  --grey1: #23262f;
  --grey: #434f64;
  --grey2: #777e90;
  --grey3: #e6e8ec;
  --surface-muted: #f6f6f6;
  --bg-page: #f8f8f8;
  --white: #ffffff;

  /* Semantic */
  --red: #ec1723;
  --yellow: #f0b10d;
  --blue1: #1877f2;

  /* Typography */
  --font-sans: "SF UI Display", "Inter", -apple-system, "system-ui", BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  /* Type scale (landing) */
  --fs-xs: 12px;
  --fs-sm: 13px;
  --fs-base: 14px;
  --fs-md: 16px;
  --fs-lg: 18px;
  --fs-xl: 20px;
  --fs-2xl: 24px;
  --fs-3xl: 30px;
  --fs-4xl: 36px;
  --fs-5xl: 44px;
  --fs-6xl: 56px;

  /* Radius */
  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 16px;
  --r-xl: 24px;
  --r-pill: 999px;

  /* Shadow */
  --shadow-card: 0 0 12px rgba(0, 0, 0, 0.06);
  --shadow-soft: 0 12px 32px 4px rgba(0, 0, 0, 0.04), 0 8px 20px rgba(0, 0, 0, 0.08);
  --shadow-strong: 0 16px 48px 16px rgba(0, 0, 0, 0.08), 0 12px 32px rgba(0, 0, 0, 0.12);

  /* Motion */
  --t-fast: 150ms;
  --t-default: 300ms;
  --ease: cubic-bezier(0.645, 0.045, 0.355, 1);

  /* Layout */
  --container: 1200px;
  --header-h: 72px;
  --section-py: 96px;
}

/* ==========================================================================
   Reset & base
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--fs-md);
  line-height: 1.55;
  color: var(--grey1);
  background: var(--bg-page);
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; display: block; }
a { color: var(--green-text); text-decoration: none; transition: opacity var(--t-fast) var(--ease); }
a:hover { opacity: 0.85; }
button { font-family: inherit; cursor: pointer; }
h1, h2, h3, h4 { margin: 0; line-height: 1.2; font-weight: 700; color: var(--grey1); letter-spacing: -0.01em; }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* Utility: brand gradient text */
.gradient-text {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

/* Section base */
section { padding: var(--section-py) 0; }
.section-title {
  font-size: var(--fs-4xl);
  margin-bottom: 16px;
  text-align: center;
}
.section-sub {
  color: var(--grey);
  font-size: var(--fs-lg);
  text-align: center;
  max-width: 720px;
  margin: 0 auto 64px;
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 48px;
  padding: 0 22px;
  border-radius: var(--r-md);
  font-size: var(--fs-md);
  font-weight: 500;
  border: 1px solid transparent;
  transition: transform var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease), opacity var(--t-fast) var(--ease);
  white-space: nowrap;
  text-decoration: none;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--gradient-brand);
  color: var(--white);
  box-shadow: 0 6px 16px rgba(7, 183, 122, 0.28);
}
.btn-primary:hover { box-shadow: 0 10px 24px rgba(7, 183, 122, 0.38); opacity: 1; }

.btn-secondary {
  background: var(--white);
  color: var(--grey1);
  border-color: var(--grey3);
}
.btn-secondary:hover { border-color: var(--green); color: var(--green); }

.btn-ghost {
  background: transparent;
  color: var(--grey1);
  height: 40px;
  padding: 0 16px;
}
.btn-ghost:hover { background: var(--surface-muted); }

.btn-on-dark {
  background: var(--white);
  color: var(--grey1);
}
.btn-on-dark:hover { color: var(--green); }

.btn-outline-on-dark {
  background: transparent;
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.6);
}
.btn-outline-on-dark:hover { background: rgba(255, 255, 255, 0.12); }

.btn-sm { height: 36px; padding: 0 14px; font-size: var(--fs-sm); }
.btn-block { width: 100%; }

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(140%) blur(12px);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: box-shadow var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}
.site-header.scrolled { box-shadow: 0 4px 14px rgba(0, 0, 0, 0.06); border-bottom-color: var(--grey3); }
.header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  height: var(--header-h);
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: var(--fs-lg);
  color: var(--grey1);
}
.brand img { width: 32px; height: 32px; }
.brand .by-smit { color: var(--grey); font-size: var(--fs-xs); font-weight: 400; }

.primary-nav {
  display: flex;
  gap: 28px;
  margin: 0 auto;
}
.primary-nav a {
  color: var(--grey);
  font-size: var(--fs-md);
  font-weight: 500;
}
.primary-nav a:hover { color: var(--green-text); opacity: 1; }

.header-actions { display: flex; align-items: center; gap: 12px; }

/* Language switcher */
.lang-switcher { position: relative; }
.lang-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 40px;
  padding: 0 12px;
  background: transparent;
  border: 1px solid var(--grey3);
  border-radius: var(--r-sm);
  font-size: var(--fs-sm);
  color: var(--grey1);
  font-weight: 500;
}
.lang-btn:hover { border-color: var(--green); color: var(--green); }
.lang-menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 140px;
  background: var(--white);
  border: 1px solid var(--grey3);
  border-radius: var(--r-sm);
  box-shadow: var(--shadow-soft);
  padding: 6px;
  display: none;
}
.lang-menu.open { display: block; }
.lang-menu li button {
  width: 100%;
  text-align: left;
  background: none;
  border: 0;
  padding: 8px 10px;
  border-radius: 4px;
  font-size: var(--fs-sm);
  color: var(--grey1);
  display: flex;
  align-items: center;
  gap: 8px;
}
.lang-menu li button:hover { background: var(--surface-muted); }
.lang-menu li button.active { background: var(--green-soft); color: var(--green); font-weight: 500; }

.hamburger {
  display: none;
  width: 40px; height: 40px;
  background: transparent;
  border: 1px solid var(--grey3);
  border-radius: var(--r-sm);
  align-items: center; justify-content: center;
  color: var(--grey1);
}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  padding-top: 64px;
  padding-bottom: 72px;
  background:
    radial-gradient(70% 70% at 20% 0%, rgba(23, 225, 128, 0.18) 0%, transparent 60%),
    radial-gradient(60% 60% at 100% 30%, rgba(68, 195, 249, 0.10) 0%, transparent 60%),
    var(--bg-page);
}
.hero-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  align-items: center;
}
.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: var(--r-pill);
  background: var(--white);
  border: 1px solid var(--green-soft-2);
  color: var(--green-text);
  font-size: var(--fs-sm);
  font-weight: 600;
  margin-bottom: 20px;
}
.hero h1 {
  font-size: var(--fs-5xl);
  line-height: 1.08;
  margin-bottom: 18px;
}
.hero h1 .highlight { background: var(--gradient-brand); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.hero-sub {
  font-size: var(--fs-lg);
  color: var(--grey);
  margin-bottom: 28px;
  max-width: 620px;
}
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 24px; }

.hero-proof {
  display: flex;
  flex-wrap: wrap;
  gap: 18px 24px;
  color: var(--grey);
  font-size: var(--fs-sm);
}
.hero-proof span { display: inline-flex; align-items: center; gap: 6px; }
.hero-proof svg { color: var(--green); }

.hero-visual {
  position: relative;
  border-radius: var(--r-xl);
  overflow: hidden;
  box-shadow: var(--shadow-strong);
  transform: rotate(-1deg);
  border: 1px solid var(--grey3);
  background: var(--white);
}
.hero-visual .mock-dashboard { display: block; width: 100%; height: auto; }

/* Mock dashboard SVG-like CSS */
.mock-dashboard {
  background: var(--white);
  aspect-ratio: 1200 / 680;
  position: relative;
  font-family: var(--font-sans);
}
.mock-tab-bar {
  display: flex;
  gap: 4px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--grey3);
  background: var(--surface-muted);
}
.mock-tab-bar span { width: 10px; height: 10px; border-radius: 50%; background: var(--grey3); }
.mock-tab-bar span:nth-child(1) { background: #ff5f57; }
.mock-tab-bar span:nth-child(2) { background: #ffbd2e; }
.mock-tab-bar span:nth-child(3) { background: #28c840; }
.mock-tab-bar .mock-url {
  margin-left: 12px;
  background: var(--white);
  padding: 4px 12px;
  border-radius: 4px;
  font-size: var(--fs-xs);
  color: var(--grey);
  flex: 1;
}
.mock-body { display: grid; grid-template-columns: 60px 194px 1fr; min-height: 320px; }
.mock-sidebar-mini { background: var(--white); border-right: 1px solid var(--grey3); padding: 12px 0; display: flex; flex-direction: column; align-items: center; gap: 16px; }
.mock-sidebar-mini i { width: 24px; height: 24px; background: var(--grey3); border-radius: 6px; }
.mock-sidebar-mini i:first-child { background: var(--gradient-brand); }
.mock-sidebar-sub { background: var(--white); border-right: 1px solid var(--grey3); padding: 12px; display: flex; flex-direction: column; gap: 6px; }
.mock-sidebar-sub .item { padding: 8px 10px; border-radius: 6px; font-size: var(--fs-xs); color: var(--grey1); }
.mock-sidebar-sub .item.active { background: var(--green-active-bg); color: var(--green-text); font-weight: 600; }
.mock-main { padding: 16px 18px; background: var(--white); }
.mock-toolbar { display: flex; gap: 8px; align-items: center; margin-bottom: 14px; flex-wrap: wrap; }
.mock-toolbar .chip { padding: 4px 10px; border: 1px solid var(--grey3); border-radius: 4px; font-size: var(--fs-xs); color: var(--grey1); }
.mock-toolbar .chip.green { background: var(--gradient-brand); border: 0; color: var(--white); }
.mock-grid { display: grid; grid-template-columns: 40px 1.4fr 1fr 1fr 1fr 1fr; gap: 0; border: 1px solid var(--grey3); border-radius: 6px; overflow: hidden; }
.mock-grid .cell { padding: 8px 10px; font-size: 11px; color: var(--grey1); border-bottom: 1px solid var(--grey3); background: var(--white); }
.mock-grid .cell.h { background: var(--surface-muted); color: var(--grey); font-weight: 500; text-transform: uppercase; font-size: 10px; }
.mock-grid .cell.status-ok { color: var(--green-text); font-weight: 600; }
.mock-grid .cell.status-warn { color: var(--warn-text); font-weight: 600; }
.mock-grid .cell.status-bad { color: var(--danger-text); font-weight: 600; }

/* ==========================================================================
   Section: Problem
   ========================================================================== */
/* .problem background — see v2.4 override block at end of file */
.cards-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.problem-card {
  background: var(--white);
  border: 1px solid var(--grey3);
  border-radius: var(--r-lg);
  padding: 32px 28px;
  transition: transform var(--t-default) var(--ease), box-shadow var(--t-default) var(--ease);
}
.problem-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card); border-color: var(--green-soft-2); }
.problem-card .icon-circle {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(236, 23, 35, 0.08), rgba(240, 177, 13, 0.08));
  color: var(--red);
  display: inline-flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
}
.problem-card h3 { font-size: var(--fs-xl); margin-bottom: 10px; }
.problem-card p { color: var(--grey); font-size: var(--fs-md); line-height: 1.6; }

/* ==========================================================================
   Section: Solution
   ========================================================================== */
.solution { background: var(--bg-page); }
.solution-card {
  background: var(--white);
  border-radius: var(--r-lg);
  padding: 32px 28px;
  box-shadow: var(--shadow-card);
  border-top: 4px solid transparent;
  transition: transform var(--t-default) var(--ease), border-color var(--t-default) var(--ease);
}
.solution-card:hover { transform: translateY(-6px); border-top-color: var(--green); }
.solution-card .icon-circle {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--green-soft);
  color: var(--green);
  display: inline-flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
}
.solution-card h3 {
  font-size: var(--fs-xl);
  margin-bottom: 12px;
  background: var(--gradient-brand);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.solution-card p { color: var(--grey); margin-bottom: 16px; }
.solution-card .powered {
  font-size: var(--fs-xs);
  color: var(--grey);
  border-top: 1px dashed var(--grey3);
  padding-top: 12px;
}
.solution-card .powered strong { color: var(--grey1); font-weight: 500; }
.see-it { text-align: center; margin-top: 32px; }
.see-it a { color: var(--green-text); font-weight: 600; text-decoration: underline; text-underline-offset: 4px; }

/* ==========================================================================
   Section: Video
   ========================================================================== */
.video { background: var(--white); }
.video-frame {
  position: relative;
  display: block;
  width: 100%;
  border: 0;
  padding: 0;
  border-radius: var(--r-xl);
  overflow: hidden;
  box-shadow: var(--shadow-strong);
  background: linear-gradient(135deg, #0a1f1a 0%, #003d2a 100%);
  aspect-ratio: 16 / 9;
  max-width: 960px;
  margin: 0 auto;
  cursor: pointer;
}
.video-frame .play-label {
  position: absolute;
  bottom: 16px;
  right: 16px;
  background: rgba(0, 0, 0, 0.6);
  color: var(--white);
  padding: 4px 10px;
  border-radius: var(--r-sm);
  font-size: var(--fs-xs);
  font-weight: 500;
}
.video-frame .play-overlay {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, rgba(7, 183, 122, 0.4), rgba(0, 152, 131, 0.5));
  color: var(--white);
}
.play-circle {
  width: 88px; height: 88px;
  border-radius: 50%;
  background: var(--white);
  color: var(--green);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
  transition: transform var(--t-default) var(--ease);
}
.video-frame:hover .play-circle { transform: scale(1.08); }
.video-frame .duration {
  position: absolute;
  bottom: 16px; right: 16px;
  background: rgba(0, 0, 0, 0.6);
  color: var(--white);
  padding: 4px 10px;
  border-radius: var(--r-sm);
  font-size: var(--fs-xs);
}

/* ==========================================================================
   Section: Features deep-dive (zigzag)
   ========================================================================== */
.features { background: var(--bg-page); }
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  margin-bottom: 96px;
}
.feature-row:last-child { margin-bottom: 0; }
.feature-row.reverse .feature-text { order: 2; }
.feature-row.reverse .feature-image { order: 1; }

.feature-text .tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: var(--r-pill);
  background: var(--green-active-bg);
  color: var(--green-text);
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.feature-text h3 {
  font-size: var(--fs-3xl);
  margin-bottom: 14px;
  line-height: 1.2;
}
.feature-text > p { color: var(--grey); font-size: var(--fs-md); margin-bottom: 20px; }
.feature-bullets li {
  display: flex; gap: 10px; align-items: flex-start;
  padding: 8px 0;
  color: var(--grey1);
  font-size: var(--fs-md);
}
.feature-bullets svg { color: var(--green); flex-shrink: 0; margin-top: 3px; }
.feature-mini-cta {
  display: inline-flex; align-items: center; gap: 6px;
  margin-top: 18px;
  color: var(--green-text);
  font-weight: 600;
  font-size: var(--fs-md);
}
.feature-mini-cta:hover { text-decoration: underline; }

.feature-image {
  background: var(--white);
  border-radius: var(--r-lg);
  padding: 24px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--grey3);
  min-height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.feature-image .placeholder-illustration {
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: var(--r-md);
  background:
    linear-gradient(135deg, var(--green-soft) 0%, rgba(68, 195, 249, 0.08) 100%);
  display: grid;
  place-items: center;
  color: var(--green);
  position: relative;
  overflow: hidden;
}
.feature-image .placeholder-illustration::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(23, 225, 128, 0.15) 0%, transparent 30%),
    radial-gradient(circle at 80% 70%, rgba(0, 152, 131, 0.12) 0%, transparent 30%);
}
.feature-image .placeholder-illustration .label {
  position: relative;
  z-index: 1;
  text-align: center;
  font-size: var(--fs-md);
  font-weight: 500;
}
.feature-image .placeholder-illustration .label small { display: block; color: var(--grey2); font-weight: 400; margin-top: 4px; font-size: var(--fs-xs); }

/* ==========================================================================
   Section: Built For (ICP tabs)
   ========================================================================== */
.built-for { background: var(--white); }
.tabs {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-bottom: 32px;
  flex-wrap: wrap;
}
.tab-btn {
  background: transparent;
  border: 1px solid var(--grey3);
  border-radius: var(--r-pill);
  padding: 10px 22px;
  font-size: var(--fs-md);
  font-weight: 500;
  color: var(--grey);
  transition: all var(--t-fast) var(--ease);
}
.tab-btn:hover { border-color: var(--green); color: var(--green); }
.tab-btn.active {
  background: var(--gradient-brand);
  color: var(--white);
  border-color: transparent;
}
.tab-panel {
  display: none;
  background: var(--bg-page);
  border-radius: var(--r-xl);
  padding: 48px;
}
.tab-panel.active { display: grid; grid-template-columns: 1.2fr 1fr; gap: 48px; }
.tab-panel h3 { font-size: var(--fs-2xl); margin-bottom: 14px; }
.tab-panel > div p.tab-desc { color: var(--grey); margin-bottom: 20px; }
.tab-panel ul li { display: flex; gap: 10px; align-items: flex-start; padding: 6px 0; color: var(--grey1); }
.tab-panel ul li svg { color: var(--green); flex-shrink: 0; margin-top: 3px; }
.tab-panel .tab-cta { margin-top: 24px; }

.testimonial {
  background: var(--white);
  border-radius: var(--r-lg);
  padding: 28px;
  border: 1px solid var(--grey3);
  box-shadow: var(--shadow-card);
  position: relative;
}
.testimonial .quote-mark {
  position: absolute;
  top: -14px; left: 24px;
  width: 40px; height: 40px;
  background: var(--gradient-brand);
  color: var(--white);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; font-weight: 700;
}
.testimonial blockquote { font-size: var(--fs-md); color: var(--grey1); line-height: 1.6; margin: 12px 0 18px; font-style: italic; }
.testimonial .author { display: flex; align-items: center; gap: 12px; }
.testimonial .avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--gradient-brand);
  color: var(--white);
  display: flex; align-items: center; justify-content: center;
  font-weight: 600;
}
.testimonial .meta strong { display: block; font-size: var(--fs-sm); color: var(--grey1); }
.testimonial .meta span { font-size: var(--fs-xs); color: var(--grey); }
.testimonial .placeholder-tag {
  position: absolute;
  top: 16px; right: 16px;
  background: var(--yellow);
  color: var(--grey1);
  font-size: 10px;
  padding: 2px 8px;
  border-radius: var(--r-pill);
  font-weight: 600;
}

/* ==========================================================================
   Section: Trust & Security
   ========================================================================== */
.trust { background: var(--bg-page); }
.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 48px;
}
.trust-card {
  background: var(--white);
  border-radius: var(--r-lg);
  padding: 28px 24px;
  border: 1px solid var(--grey3);
  text-align: center;
  transition: transform var(--t-default) var(--ease);
}
.trust-card:hover { transform: translateY(-4px); }
.trust-card .icon-wrap {
  width: 56px; height: 56px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: var(--green-soft);
  color: var(--green);
  display: flex; align-items: center; justify-content: center;
}
.trust-card h4 { font-size: var(--fs-md); margin-bottom: 8px; }
.trust-card p { font-size: var(--fs-sm); color: var(--grey); line-height: 1.55; }

.not-do {
  background: var(--white);
  border-radius: var(--r-lg);
  padding: 32px 36px;
  border: 1px solid var(--grey3);
}
.not-do h4 { font-size: var(--fs-lg); margin-bottom: 16px; }
.not-do ul { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 24px; }
.not-do li { display: flex; gap: 10px; align-items: flex-start; color: var(--grey); }
.not-do li svg { color: var(--red); flex-shrink: 0; margin-top: 3px; }

/* ==========================================================================
   Section: How It Works
   ========================================================================== */
.how { background: var(--white); }
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  position: relative;
}
.steps::before {
  content: "";
  position: absolute;
  top: 36px;
  left: 16.6%;
  right: 16.6%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--green-soft-2) 20%, var(--green-soft-2) 80%, transparent);
  z-index: 0;
}
.step {
  background: var(--bg-page);
  border-radius: var(--r-lg);
  padding: 32px 24px;
  text-align: center;
  position: relative;
  z-index: 1;
  border: 1px solid var(--grey3);
}
.step .step-num {
  width: 72px; height: 72px;
  margin: -64px auto 16px;
  border-radius: 50%;
  background: var(--gradient-brand);
  color: var(--white);
  display: flex; align-items: center; justify-content: center;
  font-size: var(--fs-2xl);
  font-weight: 700;
  box-shadow: 0 8px 24px rgba(7, 183, 122, 0.28);
  border: 6px solid var(--white);
}
.step h4 { font-size: var(--fs-lg); margin-bottom: 8px; }
.step p { color: var(--grey); font-size: var(--fs-sm); }

/* ==========================================================================
   Section: Final CTA
   ========================================================================== */
.final-cta {
  padding: var(--section-py) 0;
  background: var(--bg-page);
}
.final-cta-inner {
  background: var(--gradient-brand);
  border-radius: var(--r-xl);
  padding: 64px;
  color: var(--white);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.final-cta-inner::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(40% 60% at 20% 20%, rgba(255, 255, 255, 0.15) 0%, transparent 60%),
    radial-gradient(40% 60% at 80% 80%, rgba(255, 255, 255, 0.10) 0%, transparent 60%);
  pointer-events: none;
}
.final-cta-inner > * { position: relative; z-index: 1; }
.final-cta-inner h2 { color: var(--white); font-size: var(--fs-4xl); margin-bottom: 14px; }
.final-cta-inner p { color: rgba(255, 255, 255, 0.92); font-size: var(--fs-lg); margin-bottom: 32px; }
.final-cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-bottom: 24px; }
.final-cta-fallback { color: rgba(255, 255, 255, 0.85); font-size: var(--fs-sm); }
.final-cta-fallback a { color: var(--white); text-decoration: underline; font-weight: 500; }

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background: var(--white);
  padding: 64px 0 32px;
  border-top: 1px solid var(--grey3);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  margin-bottom: 40px;
}
.footer-brand .brand { margin-bottom: 16px; }
.footer-brand p { color: var(--grey); font-size: var(--fs-sm); max-width: 560px; }
.footer-col h5 { font-size: var(--fs-md); margin-bottom: 18px; color: var(--grey1); }
.footer-col ul li { margin-bottom: 10px; }
.footer-col a { color: var(--grey); font-size: var(--fs-sm); }
.footer-col a:hover { color: var(--green-text); opacity: 1; }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  border-top: 1px solid var(--grey3);
  color: var(--grey);
  font-size: var(--fs-sm);
  flex-wrap: wrap;
  gap: 16px;
}
.footer-bottom .footer-legal { display: flex; gap: 16px; }
.footer-bottom .footer-legal a { color: var(--grey); }

/* ==========================================================================
   Modal
   ========================================================================== */
.modal-backdrop {
  position: fixed; inset: 0;
  background: rgba(35, 38, 47, 0.5);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center; justify-content: center;
  z-index: 200;
  padding: 16px;
}
.modal-backdrop.open { display: flex; }
.modal {
  background: var(--white);
  border-radius: var(--r-lg);
  padding: 32px;
  max-width: 480px;
  width: 100%;
  position: relative;
  box-shadow: var(--shadow-strong);
  max-height: 92vh;
  overflow-y: auto;
}
.modal-close {
  position: absolute;
  top: 16px; right: 16px;
  width: 36px; height: 36px;
  background: var(--surface-muted);
  border: 0;
  border-radius: 50%;
  color: var(--grey1);
  display: flex; align-items: center; justify-content: center;
}
.modal-close:hover { background: var(--grey3); }
.modal h3 { font-size: var(--fs-2xl); margin-bottom: 8px; }
.modal > p { color: var(--grey); font-size: var(--fs-md); margin-bottom: 24px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: var(--fs-sm); font-weight: 500; margin-bottom: 6px; color: var(--grey1); }
.form-group label .req { color: var(--red); }
.form-group input,
.form-group select {
  width: 100%;
  height: 44px;
  padding: 0 14px;
  border: 1px solid var(--grey3);
  border-radius: var(--r-sm);
  font-size: var(--fs-md);
  font-family: inherit;
  color: var(--grey1);
  background: var(--white);
  transition: border-color var(--t-fast) var(--ease);
}
.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--green);
  box-shadow: 0 0 0 3px var(--green-soft);
}
.form-check { display: flex; gap: 8px; align-items: center; margin-bottom: 20px; font-size: var(--fs-sm); color: var(--grey); }
.form-check input { width: 18px; height: 18px; accent-color: var(--green); }
.form-success {
  display: none;
  background: var(--green-soft);
  color: var(--green);
  padding: 12px 14px;
  border-radius: var(--r-sm);
  font-size: var(--fs-sm);
  margin-bottom: 16px;
}
.form-success.show { display: block; }

/* ==========================================================================
   Mobile menu drawer
   ========================================================================== */
.mobile-drawer {
  position: fixed;
  top: var(--header-h);
  left: 0; right: 0; bottom: 0;
  background: var(--white);
  padding: 24px;
  display: none;
  flex-direction: column;
  gap: 8px;
  z-index: 99;
  border-top: 1px solid var(--grey3);
}
.mobile-drawer.open { display: flex; }
.mobile-drawer a {
  padding: 14px 16px;
  border-radius: var(--r-sm);
  color: var(--grey1);
  font-size: var(--fs-md);
  font-weight: 500;
}
.mobile-drawer a:hover { background: var(--surface-muted); }
.mobile-drawer .btn { margin-top: 12px; }

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (min-width: 1024px) {
  .hero-inner { grid-template-columns: 1.05fr 1fr; gap: 64px; }
}

@media (max-width: 1023px) {
  :root { --section-py: 72px; --fs-4xl: 30px; --fs-5xl: 36px; }
  .primary-nav { display: none; }
  .hamburger { display: inline-flex; }
  .cards-3 { grid-template-columns: repeat(2, 1fr); }
  .cards-3 .problem-card:nth-child(3), .cards-3 .solution-card:nth-child(3) { grid-column: 1 / -1; max-width: 50%; margin: 0 auto; }
  .feature-row { grid-template-columns: 1fr; gap: 32px; margin-bottom: 64px; }
  .feature-row.reverse .feature-text,
  .feature-row.reverse .feature-image { order: initial; }
  .trust-grid { grid-template-columns: repeat(2, 1fr); }
  .tab-panel.active { grid-template-columns: 1fr; gap: 32px; padding: 32px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .final-cta-inner { padding: 48px 32px; }
}

@media (max-width: 767px) {
  :root { --section-py: 56px; --fs-4xl: 26px; --fs-5xl: 30px; --fs-3xl: 22px; }
  .container { padding: 0 16px; }
  .header-inner { gap: 12px; }
  .hero { padding-top: 40px; padding-bottom: 48px; }
  .hero h1 { font-size: 30px; }
  .hero-sub { font-size: var(--fs-md); }
  .hero-cta .btn { width: 100%; }
  .hero-cta { flex-direction: column; }
  .cards-3 { grid-template-columns: 1fr; }
  .cards-3 .problem-card:nth-child(3), .cards-3 .solution-card:nth-child(3) { max-width: 100%; }
  .trust-grid { grid-template-columns: 1fr; }
  .not-do ul { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; gap: 56px; }
  .steps::before { display: none; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .final-cta-inner { padding: 36px 20px; }
  .final-cta-inner h2 { font-size: 24px; }
  .modal { padding: 24px; border-radius: var(--r-md); }
  .lang-btn span.lang-label { display: none; }
  .brand .by-smit { display: none; }
}

@media (max-width: 480px) {
  .hero-visual { transform: rotate(0deg); }
  .mock-sidebar-sub { display: none; }
  .mock-body { grid-template-columns: 48px 1fr; }
}

/* ==========================================================================
   Accessibility additions (Lighthouse audit fixes)
   ========================================================================== */

/* Skip-to-main link — invisible until focused */
.skip-link {
  position: absolute;
  left: 8px;
  top: -48px;
  z-index: 1000;
  background: var(--grey1);
  color: var(--white);
  padding: 10px 16px;
  border-radius: var(--r-sm);
  font-weight: 600;
  text-decoration: none;
  transition: top 0.15s var(--ease);
}
.skip-link:focus { top: 8px; opacity: 1; }

/* Focus-visible rings (keyboard-only, not on click) */
.btn:focus-visible,
.tab-btn:focus-visible,
.lang-btn:focus-visible,
.hamburger:focus-visible,
.modal-close:focus-visible,
.primary-nav a:focus-visible,
.mobile-drawer a:focus-visible,
.footer-col a:focus-visible,
.footer-bottom a:focus-visible,
.feature-mini-cta:focus-visible,
.see-it a:focus-visible,
.video-frame:focus-visible {
  outline: 2px solid var(--green-text);
  outline-offset: 3px;
  border-radius: var(--r-sm);
}
.btn-primary:focus-visible { outline-offset: 4px; }

/* Anchor offset so smooth-scroll doesn't hide content behind sticky header */
section[id] { scroll-margin-top: calc(var(--header-h) + 16px); }

/* Reduce motion — respect user preference */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .hero-visual { transform: none; }
  .btn:hover,
  .problem-card:hover,
  .solution-card:hover,
  .trust-card:hover { transform: none; }
}

/* Touch target boosts on coarse pointers (mobile) */
@media (pointer: coarse) {
  .btn-sm { min-height: 44px; padding: 0 16px; }
  .hamburger { width: 44px; height: 44px; }
  .lang-btn { min-height: 44px; }
  .tab-btn { min-height: 44px; }
  .footer-col a { display: inline-block; padding: 6px 0; }
}

/* ==========================================================================
   v2.2 ADDITIONS — Sections [4] Arcade · [6] ICP cards · [8.5] FAQ ·
   [10] Lead Form inline · Mobile sticky CTA · Multi-line bullets
   ========================================================================== */

/* ---------- Hero v2.2 — 3 bullets + new dashboard columns ---------- */
.hero-bullets {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 16px 0 20px;
}
.hero-bullets li {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--grey1);
  font-size: var(--fs-md);
  font-weight: 500;
}
.hero-bullets svg { color: var(--green-text); flex-shrink: 0; }

/* ---------- [4] Arcade Slideshow ---------- */
.demo-section { background: var(--white); }
.arcade-wrapper {
  max-width: 960px;
  margin: 0 auto;
  border-radius: var(--r-xl);
  overflow: hidden;
  background: var(--white);
  border: 1.5px solid rgba(7, 183, 122, 0.18);
  box-shadow: var(--shadow-strong);
  transition: transform 320ms var(--ease),
              border-color 320ms var(--ease),
              box-shadow 320ms var(--ease);
}
.arcade-wrapper:hover {
  transform: translateY(-4px);
  border-color: var(--green);
  box-shadow:
    0 0 0 2px rgba(7, 183, 122, 0.22),
    0 24px 48px -12px rgba(7, 183, 122, 0.32),
    0 12px 24px -8px rgba(7, 183, 122, 0.18),
    0 0 64px -16px rgba(23, 225, 128, 0.40);
}
.arcade-embed {
  position: relative;
  padding-bottom: calc(49.8958% + 41px);
  height: 0;
  width: 100%;
}
.arcade-embed iframe {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  color-scheme: light;
  border: 0;
}

/* ---------- [6] DÀNH CHO AI — ICP cards (PAS structure) ---------- */
.icp-section { background: var(--white); }
.icp-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}
.icp-card {
  background: var(--white);
  border: 1px solid var(--grey3);
  border-radius: var(--r-lg);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  transition: transform var(--t-default) var(--ease),
              box-shadow var(--t-default) var(--ease),
              border-color var(--t-default) var(--ease);
  position: relative;
}
.icp-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: var(--gradient-brand);
  border-radius: var(--r-lg) var(--r-lg) 0 0;
  opacity: 0;
  transition: opacity var(--t-default) var(--ease);
}
.icp-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-card); }
.icp-card:hover::before { opacity: 1; }
.icp-card .icon-circle {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--green-soft);
  color: var(--green-text);
  display: inline-flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
}
.icp-card h3 {
  font-size: var(--fs-lg);
  margin-bottom: 16px;
  letter-spacing: 0.04em;
  color: var(--grey1);
}
.icp-card .icp-quote {
  font-style: italic;
  color: var(--grey);
  font-size: var(--fs-md);
  line-height: 1.6;
  margin-bottom: 20px;
  padding-left: 14px;
  border-left: 3px solid var(--green-soft-2);
}
.icp-card .icp-divider {
  border: 0;
  border-top: 1px dashed var(--grey3);
  margin: 8px 0 16px;
}
.icp-card .icp-label {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--green-text);
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.icp-card .icp-bullets {
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}
.icp-card .icp-bullets li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  color: var(--grey1);
  font-size: var(--fs-md);
  line-height: 1.5;
}
.icp-card .icp-bullets svg { color: var(--green-text); flex-shrink: 0; margin-top: 4px; }

.icp-cta-wrap { text-align: center; }

/* ---------- [8.5] FAQ Accordion ---------- */
.faq-section { background: var(--bg-page); }
.faq-list {
  max-width: 880px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.faq-item {
  background: var(--white);
  border: 1px solid var(--grey3);
  border-radius: var(--r-md);
  overflow: hidden;
  transition: box-shadow var(--t-default) var(--ease);
}
.faq-item.open { box-shadow: var(--shadow-card); border-color: var(--green-soft-2); }
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px 24px;
  background: transparent;
  border: 0;
  text-align: left;
  font-size: var(--fs-lg);
  font-weight: 600;
  color: var(--grey1);
  cursor: pointer;
  min-height: 64px;
  transition: background var(--t-fast) var(--ease);
}
.faq-question:hover { background: var(--surface-muted); }
.faq-num {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--gradient-brand);
  color: var(--white);
  display: flex; align-items: center; justify-content: center;
  font-size: var(--fs-sm);
  font-weight: 600;
  flex-shrink: 0;
}
.faq-question-text { flex: 1; }
.faq-chevron {
  width: 24px; height: 24px;
  color: var(--grey);
  transition: transform var(--t-default) var(--ease);
  flex-shrink: 0;
}
.faq-item.open .faq-chevron { transform: rotate(180deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--t-default) var(--ease);
}
.faq-item.open .faq-answer { max-height: 1200px; }
.faq-answer-inner {
  padding: 8px 24px 28px 70px;
  color: var(--grey1);
  font-size: var(--fs-md);
  line-height: 1.65;
}
.faq-answer-inner p { margin-bottom: 12px; }
.faq-answer-inner strong { color: var(--grey1); font-weight: 600; }
.faq-answer-inner ol, .faq-answer-inner ul {
  margin: 8px 0 16px 0;
  padding-left: 4px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.faq-answer-inner ol li, .faq-answer-inner ul li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
}
.faq-answer-inner .faq-step-num {
  display: inline-flex;
  width: 24px; height: 24px;
  border-radius: 6px;
  background: var(--green-active-bg);
  color: var(--green-text);
  font-weight: 600;
  font-size: var(--fs-sm);
  align-items: center; justify-content: center;
  flex-shrink: 0;
}
.faq-answer-inner .faq-lead {
  background: var(--green-soft);
  border-left: 4px solid var(--green-text);
  padding: 14px 18px;
  border-radius: var(--r-sm);
  color: var(--green-text);
  font-weight: 600;
  margin: 0 0 16px 0;
}
.faq-answer-inner .faq-proof {
  background: var(--surface-muted);
  border-radius: var(--r-sm);
  padding: 12px 16px;
  margin: 12px 0;
  font-size: var(--fs-sm);
  color: var(--grey1);
}
.faq-answer-inner .faq-warranty-table {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0;
}
.faq-answer-inner .faq-warranty-table td {
  padding: 10px 12px;
  border: 1px solid var(--grey3);
  font-size: var(--fs-sm);
  vertical-align: top;
}
.faq-answer-inner .faq-warranty-table td:first-child {
  background: var(--green-active-bg);
  color: var(--green-text);
  font-weight: 700;
  text-align: center;
  width: 40px;
}
.faq-answer-inner .faq-warranty-table strong { display: block; margin-bottom: 4px; }
.faq-answer-inner .faq-inline-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 12px;
  color: var(--green-text);
  font-weight: 600;
  font-size: var(--fs-md);
  text-decoration: underline;
  text-underline-offset: 4px;
}
.faq-footer-note {
  margin-top: 32px;
  text-align: center;
  color: var(--grey);
  font-size: var(--fs-md);
}
.faq-footer-note a { color: var(--green-text); font-weight: 600; }

/* ---------- [10] LEAD FORM INLINE ---------- */
.lead-section { background: var(--bg-page); padding-bottom: 96px; }
.lead-card {
  max-width: 1200px;
  margin: 0 auto;
  background: linear-gradient(135deg, #f0fdf4 0%, var(--white) 100%);
  border: 1px solid var(--green-soft-2);
  border-radius: var(--r-xl);
  padding: 56px 48px;
  display: grid;
  grid-template-columns: 45% 55%;
  gap: 48px;
  align-items: start;
  box-shadow: var(--shadow-card);
}
.lead-info {
  display: flex;
  flex-direction: column;
}
.lead-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  align-self: flex-start;
  background: var(--green-soft);
  color: var(--green-text);
  border: 1px solid var(--green-soft-2);
  padding: 6px 14px;
  border-radius: var(--r-pill);
  font-size: var(--fs-sm);
  font-weight: 600;
  margin-bottom: 16px;
}
.lead-info h2 {
  font-size: var(--fs-3xl);
  margin-bottom: 12px;
  line-height: 1.2;
}
.lead-info h2 .highlight {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.lead-info > p {
  color: var(--grey);
  font-size: var(--fs-md);
  line-height: 1.6;
  margin-bottom: 24px;
}
.lead-trust-list {
  background: var(--white);
  border-radius: var(--r-md);
  border: 1px solid var(--grey3);
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 16px;
}
.lead-trust-list li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  color: var(--grey1);
  font-size: var(--fs-sm);
}
.lead-trust-list svg { color: var(--green-text); flex-shrink: 0; margin-top: 2px; }
.lead-response { color: var(--grey); font-size: var(--fs-sm); }

.lead-form {
  background: var(--white);
  border-radius: var(--r-md);
  padding: 32px;
  border: 1px solid var(--grey3);
}
.lead-form .form-group { margin-bottom: 16px; }
.lead-form .form-group label {
  display: block;
  font-size: var(--fs-sm);
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--grey1);
}
.lead-form .form-group label .req { color: var(--red); margin-left: 2px; }
.lead-form .form-group input,
.lead-form .form-group select {
  width: 100%;
  height: 48px;
  padding: 0 14px;
  border: 1px solid var(--grey3);
  border-radius: var(--r-sm);
  font-size: 16px;
  font-family: inherit;
  color: var(--grey1);
  background: var(--white);
  transition: border-color var(--t-fast) var(--ease),
              box-shadow var(--t-fast) var(--ease);
}
.lead-form .form-group input:focus,
.lead-form .form-group select:focus {
  outline: none;
  border-color: var(--green-text);
  box-shadow: 0 0 0 3px var(--green-soft);
}
.lead-form .form-check {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: var(--fs-sm);
  color: var(--grey);
  margin-bottom: 20px;
  line-height: 1.5;
}
.lead-form .form-check input {
  width: 18px; height: 18px;
  accent-color: var(--green-text);
  flex-shrink: 0;
  margin-top: 2px;
}

/* Phone input with country prefix (+84 VN) */
.lead-form .phone-input-group {
  display: flex;
  align-items: stretch;
  border: 1px solid var(--grey3);
  border-radius: var(--r-sm);
  background: var(--white);
  overflow: hidden;
  transition: border-color var(--t-fast) var(--ease),
              box-shadow var(--t-fast) var(--ease);
}
.lead-form .phone-input-group:focus-within {
  border-color: var(--green-text);
  box-shadow: 0 0 0 3px var(--green-soft);
}
.lead-form .phone-input-group select {
  border: none;
  background: var(--grey4, #f5f6f7);
  border-right: 1px solid var(--grey3);
  padding: 0 24px 0 12px;
  font-size: 15px;
  font-weight: 600;
  color: var(--grey1);
  cursor: pointer;
  height: 48px;
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath fill='%23666' d='M5 6L0 0h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
  max-width: 110px;
}
.lead-form .phone-input-group select:focus {
  outline: none;
}
.lead-form .phone-input-group input {
  flex: 1;
  border: none !important;
  box-shadow: none !important;
  height: 48px;
  padding: 0 14px;
  font-size: 16px;
  background: transparent;
}
.lead-form .phone-input-group input:focus {
  outline: none;
}

/* Account-count radio chips (visible options instead of select) */
.lead-form .account-count-options {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}
.lead-form .count-chip {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 10px;
  padding: 14px 16px;
  min-height: 52px;
  border: 1.5px solid var(--grey3);
  border-radius: var(--r-sm);
  background: var(--white);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.3;
  color: var(--grey1);
  cursor: pointer;
  text-align: left;
  transition: all 200ms var(--ease);
  user-select: none;
}
.lead-form .count-chip:hover {
  border-color: var(--green);
  background: var(--green-soft);
}
/* Hide the native radio button but keep accessibility */
.lead-form .count-chip input[type="radio"] {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}
/* Custom visual radio circle rendered via ::before on the chip */
.lead-form .count-chip::before {
  content: "";
  display: inline-block;
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  box-sizing: border-box;
  border-radius: 50%;
  border: 1.5px solid var(--grey3);
  background: var(--white);
  transition: all 200ms var(--ease);
}
.lead-form .count-chip > span {
  flex: 1;
  min-width: 0;
}
.lead-form .count-chip:hover::before {
  border-color: var(--green);
}
.lead-form .count-chip:has(input:checked) {
  border-color: var(--green);
  background: var(--green-soft);
  color: var(--green-text);
  font-weight: 600;
  box-shadow: 0 0 0 3px rgba(7, 183, 122, 0.12);
}
.lead-form .count-chip:has(input:checked)::before {
  border-color: var(--green);
  background: radial-gradient(circle, var(--green) 0 4px, var(--white) 5px 100%);
}
.lead-form .count-chip:has(input:focus-visible) {
  outline: 2px solid var(--green);
  outline-offset: 2px;
}
@media (max-width: 480px) {
  .lead-form .account-count-options { grid-template-columns: 1fr; }
}
.lead-submit {
  width: 100%;
  height: 52px;
  font-size: var(--fs-md);
  font-weight: 600;
  letter-spacing: 0.02em;
}
.lead-submit[aria-busy="true"] { opacity: 0.7; cursor: progress; }
.lead-security {
  margin-top: 14px;
  text-align: center;
  font-size: var(--fs-xs);
  color: var(--grey);
}
.lead-error {
  display: none;
  background: rgba(236, 23, 35, 0.08);
  color: var(--red);
  border-radius: var(--r-sm);
  padding: 10px 14px;
  font-size: var(--fs-sm);
  margin-bottom: 16px;
}
.lead-error.show { display: block; }

.lead-success {
  display: none;
  text-align: center;
  padding: 40px 24px;
}
.lead-success.show { display: block; }
.lead-success .icon-check {
  width: 72px; height: 72px;
  border-radius: 50%;
  background: var(--green-soft);
  color: var(--green-text);
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 18px;
  font-size: 36px;
  font-weight: 700;
}
.lead-success h3 {
  font-size: var(--fs-2xl);
  color: var(--green-text);
  margin-bottom: 12px;
}
.lead-success p { color: var(--grey1); margin-bottom: 20px; }

/* ---------- Sticky bottom CTA bar (mobile only) ---------- */
.sticky-cta-bar {
  display: none;
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: var(--white);
  border-top: 1px solid var(--grey3);
  box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.06);
  padding: 10px 16px calc(10px + env(safe-area-inset-bottom));
  z-index: 90;
  transform: translateY(100%);
  transition: transform var(--t-default) var(--ease);
}
.sticky-cta-bar.visible { transform: translateY(0); }
.sticky-cta-bar .row {
  display: flex;
  gap: 8px;
}
.sticky-cta-bar .btn {
  flex: 1;
  height: 48px;
  font-size: var(--fs-sm);
}
.sticky-cta-bar .btn-primary { flex: 1.5; }

/* ---------- Mobile drawer animation (slide from top) ---------- */
.mobile-drawer {
  transform: translateY(-12px);
  opacity: 0;
  pointer-events: none;
  transition: transform var(--t-default) var(--ease),
              opacity var(--t-default) var(--ease);
}
.mobile-drawer.open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

/* ---------- Responsive overrides for new sections ---------- */
@media (max-width: 1023px) {
  .icp-grid { grid-template-columns: repeat(2, 1fr); }
  .icp-card:nth-child(3) {
    grid-column: 1 / -1;
    max-width: 50%;
    margin: 0 auto;
  }
  .lead-card {
    grid-template-columns: 1fr;
    padding: 40px 32px;
    gap: 32px;
  }
}

@media (max-width: 767px) {
  .icp-grid { grid-template-columns: 1fr; }
  .icp-card:nth-child(3) { max-width: 100%; }
  .icp-card { padding: 24px 20px; }

  .lead-card {
    padding: 32px 20px;
    border-radius: var(--r-lg);
  }
  .lead-form { padding: 20px; }
  .lead-info h2 { font-size: 24px; }
  .lead-trust-list { padding: 14px 16px; }

  .faq-question {
    padding: 16px 18px;
    font-size: var(--fs-md);
    min-height: 56px;
  }
  .faq-answer-inner { padding: 4px 18px 24px 56px; }

  .arcade-wrapper { border-radius: var(--r-md); }

  /* Show sticky CTA bar on mobile only */
  .sticky-cta-bar { display: block; }

  /* Add bottom padding to body so footer not hidden under sticky CTA */
  body { padding-bottom: 76px; }
}

/* ---------- Header CTA Đặt lịch tư vấn gradient ---------- */
.btn-book {
  background: var(--gradient-brand);
  color: var(--white);
  box-shadow: 0 6px 16px rgba(7, 183, 122, 0.28);
}
.btn-book:hover {
  box-shadow: 0 10px 24px rgba(7, 183, 122, 0.38);
  color: var(--white);
}

/* ==========================================================================
   v2.3 AUDIT FIXES (2026-05-17) — align với design-system-adscheck spec
   ========================================================================== */

/* F1+F2: Unify H3 sizes cho mọi card titles (problem/solution/icp/trust/step)
   Design system spec: --fs-xl 20px cho card heading
   Trước: Problem 20, ICP 18, Trust 18.72, Step 18.72 → inconsistent */
.problem-card h3,
.solution-card h3,
.icp-card h3,
.trust-card h3,
.step h3 {
  font-size: var(--fs-xl);     /* 20px unified */
  line-height: 1.3;
  font-weight: 700;
  margin-bottom: 12px;
}
.trust-card h3,
.step h3 { margin-bottom: 8px; }

/* F3: btn-book — match CTA scale primary cho consistency
   Trước: btn-sm 36px h, 13px fs → quá nhỏ so với primary button 48px */
.header-actions .btn-book {
  height: 44px;
  padding: 0 20px;
  font-size: var(--fs-md);     /* 16px */
  font-weight: 600;
}

/* F4: Section padding — modern landing rhythm (96/80/56) */
@media (max-width: 1023px) {
  :root { --section-py: 80px; }
}
@media (max-width: 767px) {
  :root { --section-py: 56px; }
}

/* F5: Card bullets line-height compact (1.5 thay vì 1.55) */
.card-bullets li {
  line-height: 1.5;
  font-size: var(--fs-md);
  color: var(--grey);
  margin-bottom: 4px;
}
.card-bullets li:last-child { margin-bottom: 0; }

/* F7: Text wrap balance cho mọi heading wrap nhiều dòng */
h1, h2, h3, h4,
.section-title,
.hero h1 {
  text-wrap: balance;
}

/* F8: Mobile drawer padding-top để thoáng từ header */
.mobile-drawer {
  padding-top: 28px;
  padding-bottom: 32px;
  gap: 4px;
}
.mobile-drawer a {
  padding: 14px 16px;
  border-radius: var(--r-sm);
  color: var(--grey1);
  font-size: var(--fs-md);
  font-weight: 500;
}
.mobile-drawer .btn {
  margin-top: 8px;
  height: 48px;
  font-size: var(--fs-md);
}

/* Bonus: Cards-3 gap responsive — design system 24/16/16 */
@media (max-width: 1023px) { .cards-3 { gap: 20px; } }
@media (max-width: 767px) { .cards-3 { gap: 16px; } }

/* Bonus: Section-sub margin-bottom responsive (64→48→32) — giảm khoảng cách trên mobile */
@media (max-width: 1023px) { .section-sub { margin-bottom: 48px; } }
@media (max-width: 767px) { .section-sub { margin-bottom: 32px; } }

/* Bonus: Hero h1 responsive scale cleaner */
.hero h1 {
  font-size: var(--fs-5xl);   /* 44px desktop */
  line-height: 1.1;
  letter-spacing: -0.02em;
}
@media (min-width: 1280px) {
  .hero h1 { font-size: var(--fs-6xl); }   /* 56px on large desktop */
}
@media (max-width: 767px) {
  .hero h1 { font-size: 30px; line-height: 1.15; }
}

/* Bonus: Final CTA padding responsive */
.final-cta-inner {
  padding: 64px;
  border-radius: var(--r-xl);
}
@media (max-width: 1023px) {
  .final-cta-inner { padding: 48px 36px; border-radius: 20px; }
  .final-cta-inner h2 { font-size: 30px; }
}
@media (max-width: 767px) {
  .final-cta-inner { padding: 36px 24px; border-radius: var(--r-lg); }
  .final-cta-inner h2 { font-size: 24px; }
  .final-cta-inner p { font-size: var(--fs-md); }
}

/* Bonus: ICP card icon — match design system 56px (đã 56 ✓) + tăng visual weight cho h3 uppercase */
.icp-card h3 {
  letter-spacing: 0.06em;   /* spaced uppercase legibility */
  font-size: var(--fs-lg);  /* override unified back to 18px cho UPPERCASE compact */
  font-weight: 800;
  margin-bottom: 14px;
}

/* Bonus: Trust card heading UPPERCASE consistency */
.trust-card h3 {
  letter-spacing: 0.05em;
  font-size: var(--fs-md);   /* 16px UPPERCASE — compact for 4-col grid */
  font-weight: 700;
}
@media (max-width: 1023px) {
  .trust-card h3 { font-size: var(--fs-lg); }  /* 18px on tablet (2x2 grid breathes more) */
}

/* Bonus: Step heading consistency */
.step h3 {
  font-size: var(--fs-md);
  letter-spacing: 0.04em;
  font-weight: 700;
}

/* Bonus: Hero proof line wrap cleaner trên mobile (stack vertical) */
@media (max-width: 767px) {
  .hero-proof {
    flex-direction: column;
    gap: 10px;
  }
  .hero-proof span { font-size: var(--fs-sm); }
}

/* Bonus: FAQ question font scale mobile */
@media (max-width: 767px) {
  .faq-question { font-size: var(--fs-md); padding: 16px 18px; min-height: 56px; }
  .faq-num { width: 28px; height: 28px; font-size: var(--fs-xs); }
  .faq-answer-inner { padding: 4px 18px 24px 54px; font-size: var(--fs-md); }
}

/* Bonus: Lead card mobile padding tighter + form full-width */
@media (max-width: 767px) {
  .lead-section { padding-bottom: 56px; }
  .lead-card { padding: 28px 20px; border-radius: var(--r-lg); }
  .lead-info h2 { font-size: 24px; line-height: 1.2; }
  .lead-form { padding: 20px; }
}

/* Bonus: Body padding-bottom mobile bù sticky CTA — chính xác hơn */
@media (max-width: 767px) {
  body { padding-bottom: 84px; }
  .sticky-cta-bar .btn { font-size: var(--fs-sm); padding: 0 12px; }
}

/* Bonus: Container padding consistency theo spec (16/32/24)
   Design system spec: mobile 16, tablet 32, desktop 24 */
.container { padding: 0 24px; }
@media (max-width: 1023px) { .container { padding: 0 32px; } }
@media (max-width: 767px) { .container { padding: 0 16px; } }

/* Bonus: Brand text legibility — by-smit nhỏ và xám hơn */
.brand .by-smit { color: var(--grey); font-size: 11px; font-weight: 400; }

/* Bonus: Hero pill — better visual hierarchy */
.hero-pill {
  padding: 8px 14px;
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: 0.02em;
}

/* Bonus: Hero CTA gap & alignment trên mobile */
@media (max-width: 767px) {
  .hero-cta { gap: 12px; }
  .hero-cta .btn { width: 100%; justify-content: center; }
}

/* ==========================================================================
   v2.4 REDESIGN — Bento Features Grid + Alternating Section BG +
                   Gradient text emphasis per section
   ========================================================================== */

/* ---------------------------------------------------------------------
   ALTERNATING SECTION BACKGROUNDS — visual rhythm + emphasis
   Pattern: page-bg → white → page-bg → white ... + special highlights
   --------------------------------------------------------------------- */
.hero          { background: linear-gradient(135deg, #eafff5 0%, #f0fdf9 35%, var(--bg-page) 100%); }
.problem       { background: var(--white); }
.solution      { background: var(--bg-page); position: relative; }
.demo-section  { background: var(--white); }
.features      { background: linear-gradient(180deg, var(--bg-page) 0%, #f0fdf4 100%); }
.icp-section   { background: var(--white); }
.trust         { background: linear-gradient(180deg, #f0fdf4 0%, var(--bg-page) 100%); }
.how           { background: var(--white); }
.faq-section   { background: var(--bg-page); }
.final-cta     { background: var(--white); }
.lead-section  { background: linear-gradient(180deg, var(--bg-page) 0%, #eafff5 100%); }
.site-footer   { background: var(--grey1); color: rgba(255,255,255,0.75); border-top: 0; }

/* Footer dark mode override */
.site-footer .brand,
.site-footer h3,
.site-footer h4 { color: var(--white); }
.site-footer .brand .by-smit { color: rgba(255,255,255,0.55); }
.site-footer .footer-brand p { color: rgba(255,255,255,0.65); }
.site-footer .footer-col a { color: rgba(255,255,255,0.7); }
.site-footer .footer-col a:hover { color: var(--white); opacity: 1; }
.site-footer .footer-bottom {
  color: rgba(255,255,255,0.55);
  border-top-color: rgba(255,255,255,0.1);
}
.site-footer .footer-bottom .footer-legal a { color: rgba(255,255,255,0.7); }
.site-footer .footer-bottom .footer-legal a:hover { color: var(--white); opacity: 1; }

/* ---------------------------------------------------------------------
   GRADIENT TEXT EMPHASIS — highlight key phrase per section title
   --------------------------------------------------------------------- */
.problem .gradient-text,
.solution .section-title,
.features .section-title,
.icp-section .section-title,
.trust .section-title,
.how .section-title,
.faq-section .section-title,
.lead-info h2 .highlight {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

/* Section title wrap — full title gradient only for certain sections, others split */
.solution .section-title,
.features .section-title,
.icp-section .section-title,
.trust .section-title,
.how .section-title,
.faq-section .section-title {
  display: inline-block;
  background-image: linear-gradient(90deg, var(--grey1) 0%, var(--grey1) 60%, transparent 60%);
}
/* Above is fallback — use simpler:  */
.solution .section-title,
.features .section-title,
.icp-section .section-title,
.trust .section-title,
.how .section-title,
.faq-section .section-title {
  background: none;
  -webkit-text-fill-color: initial;
  color: var(--grey1);
  display: block;
}

/* Add accent underline below section titles using ::after pseudo-element */
.section-title { position: relative; padding-bottom: 16px; }
.section-title::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 56px;
  height: 4px;
  border-radius: 999px;
  background: var(--gradient-brand);
}

/* Hero h1 no accent underline (already has highlight span) */
.hero h1::after { display: none; }
/* Final CTA — title trên gradient dark, không cần accent green */
.final-cta-inner h2 { padding-bottom: 0; }
.final-cta-inner h2::after { display: none; }

/* ---------------------------------------------------------------------
   BENTO GRID — Features section (replace zigzag rows)
   Layout: 3 columns × 3 rows on desktop, responsive collapse
   Cell 1 (hero): col 1-2, row 1-2 (large feature)
   Cell 2:        col 3,   row 1
   Cell 3:        col 3,   row 2 (accent)
   Cell 4 (wide): col 1-2, row 3
   Cell 5:        col 3,   row 3
   --------------------------------------------------------------------- */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: minmax(220px, auto) minmax(220px, auto) minmax(220px, auto);
  gap: 20px;
  margin-bottom: 48px;
}

.bento-cell {
  position: relative;
  background: var(--white);
  border: 1px solid var(--grey3);
  border-radius: 20px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: transform var(--t-default) var(--ease),
              box-shadow var(--t-default) var(--ease),
              border-color var(--t-default) var(--ease);
}
.bento-cell:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-soft);
  border-color: var(--green-soft-2);
}

/* Cell sizes */
.bento-hero {
  grid-column: 1 / span 2;
  grid-row: 1 / span 2;
  padding: 36px;
  background: linear-gradient(135deg, var(--white) 0%, #f0fdf4 100%);
  border-color: var(--green-soft-2);
}
.bento-md  { /* default 1×1 */ }
.bento-wide {
  grid-column: 1 / span 2;
  grid-row: 3;
}
.bento-accent {
  background: linear-gradient(160deg, var(--grey1) 0%, #1a2030 100%);
  color: var(--white);
  border-color: var(--grey1);
}
.bento-accent .bento-tag { background: rgba(255,255,255,0.1); color: #4ee19f; }
.bento-accent h3 { color: var(--white); }
.bento-accent .bento-desc-sm { color: rgba(255,255,255,0.75); }
.bento-accent .bento-icon { background: rgba(78, 225, 159, 0.18); color: #4ee19f; }
.bento-accent:hover { border-color: var(--grey); transform: translateY(-4px); }

/* Cell elements */
.bento-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  background: var(--green-soft);
  color: var(--green-text);
  display: inline-flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
}
.bento-hero .bento-icon { width: 64px; height: 64px; border-radius: 16px; }
.bento-hero .bento-icon i { width: 32px; height: 32px; }

.bento-tag {
  display: inline-block;
  padding: 4px 10px;
  border-radius: var(--r-pill);
  background: var(--green-active-bg);
  color: var(--green-text);
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 12px;
  align-self: flex-start;
}

.bento-cell h3 {
  font-size: var(--fs-xl);    /* 20px */
  margin-bottom: 10px;
  line-height: 1.25;
  font-weight: 700;
}
.bento-hero h3 { font-size: var(--fs-3xl); line-height: 1.15; margin-bottom: 14px; }

.bento-desc {
  font-size: var(--fs-md);
  color: var(--grey);
  line-height: 1.6;
  margin-bottom: 16px;
}
.bento-desc-sm {
  font-size: var(--fs-sm);
  color: var(--grey);
  line-height: 1.55;
}

.bento-bullets {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: auto;
}
.bento-bullets li {
  display: flex; gap: 8px; align-items: center;
  font-size: var(--fs-sm);
  color: var(--grey1);
  font-weight: 500;
}
.bento-bullets svg { color: var(--green-text); flex-shrink: 0; }

/* Bento hero decorations (glow + grid pattern bg) */
.bento-decorations {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  border-radius: inherit;
  z-index: 0;
}
.bento-decorations + * { position: relative; z-index: 1; }
.bento-hero > * { position: relative; z-index: 1; }
.bento-glow {
  position: absolute;
  bottom: -40%;
  right: -20%;
  width: 70%;
  aspect-ratio: 1;
  background: radial-gradient(circle, rgba(7, 183, 122, 0.18) 0%, transparent 60%);
  pointer-events: none;
}
.bento-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(7, 183, 122, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(7, 183, 122, 0.05) 1px, transparent 1px);
  background-size: 24px 24px;
  opacity: 0.6;
}

.bento-cta-wrap { text-align: center; }

/* ---------------------------------------------------------------------
   Bento Responsive — tablet 2-col, mobile 1-col stack
   --------------------------------------------------------------------- */
@media (max-width: 1023px) {
  .bento-grid {
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: auto;
  }
  .bento-hero {
    grid-column: 1 / -1;
    grid-row: auto;
  }
  .bento-wide {
    grid-column: 1 / -1;
    grid-row: auto;
  }
  .bento-md { grid-column: span 1; }
}

@media (max-width: 767px) {
  .bento-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .bento-cell { padding: 24px 20px; border-radius: 16px; }
  .bento-hero { padding: 28px 24px; }
  .bento-hero h3 { font-size: var(--fs-2xl); }
  .bento-cell h3 { font-size: var(--fs-lg); }
  .bento-hero, .bento-wide { grid-column: 1; }
}

/* ---------------------------------------------------------------------
   Section title accent line — mobile smaller
   --------------------------------------------------------------------- */
@media (max-width: 767px) {
  .section-title { padding-bottom: 12px; }
  .section-title::after { width: 40px; height: 3px; }
}

/* Problem title — keep gradient text emphasis on the second line */
.problem .section-title { padding-bottom: 16px; }
.problem .section-title .gradient-text {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ---------------------------------------------------------------------
   Section subtitle (.section-sub) softer color trên alternating bg
   --------------------------------------------------------------------- */
.features .section-sub,
.icp-section .section-sub,
.trust .section-sub,
.how .section-sub,
.faq-section .section-sub {
  color: var(--grey);
}

/* ---------------------------------------------------------------------
   Final CTA — subtle gradient overlay for dramatic emphasis
   --------------------------------------------------------------------- */
.final-cta-inner {
  position: relative;
  overflow: hidden;
}
.final-cta-inner::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -20%;
  width: 80%;
  aspect-ratio: 1;
  background: radial-gradient(circle, rgba(255,255,255,0.25) 0%, transparent 60%);
  pointer-events: none;
}
.final-cta-inner::after {
  content: "";
  position: absolute;
  bottom: -50%;
  right: -20%;
  width: 80%;
  aspect-ratio: 1;
  background: radial-gradient(circle, rgba(255,255,255,0.15) 0%, transparent 60%);
  pointer-events: none;
}
.final-cta-inner > * { position: relative; z-index: 1; }

/* ---------------------------------------------------------------------
   Hide old .features feature-row styles (no longer used by HTML)
   --------------------------------------------------------------------- */
.feature-row, .feature-image, .feature-text .tag,
.feature-bullets, .feature-mini-cta,
.placeholder-illustration { /* keep CSS but unused now */ }

/* ==========================================================================
   v2.5 — Solution section title: combined h2 with gradient brand highlight
   ========================================================================== */

/* Section [3] Solution — combo title (2 lines, second line gradient brand)
   Layout: display block + center align text → accent bar centered theo full container */
.solution-title-combo {
  display: block;
  text-align: center;
  margin-bottom: 64px;
  padding-bottom: 24px;
  position: relative;
}
/* Override base section-title::after to position relative to wrapper, not last line */
.solution-title-combo::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 56px;
  height: 4px;
  border-radius: 999px;
  background: var(--gradient-brand);
  display: block;
}
.solution-title-combo > span:first-child {
  display: block;
  font-size: var(--fs-4xl);
  line-height: 1.2;
  color: var(--grey1);
  font-weight: 700;
  margin-bottom: 10px;
}
.solution-brand-highlight {
  display: block;
  font-size: var(--fs-3xl);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.01em;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
/* Disable old accent bar attached to highlight itself */
.solution-brand-highlight::after { display: none; }

/* Tablet: scale down */
@media (max-width: 1023px) {
  .solution-title-combo > span:first-child { font-size: 30px; }
  .solution-brand-highlight { font-size: 26px; }
}
/* Mobile: stack tighter */
@media (max-width: 767px) {
  .solution-title-combo { gap: 6px; margin-bottom: 40px; }
  .solution-title-combo > span:first-child { font-size: 24px; }
  .solution-brand-highlight { font-size: 22px; padding-bottom: 10px; }
  .solution-brand-highlight::after { width: 40px; height: 3px; }
}

/* Solution section: remove .section-sub spacing since we don't use it anymore */
.solution .section-sub { display: none; }

/* ==========================================================================
   v2.6 — TIGHTER SECTION SPACING + BRAND-COLORED BORDERS WITH HOVER GLOW
   - Section padding: 96 → 64 desktop, 80 → 56 tablet, 56 → 40 mobile
   - Card borders: green-soft tint by default, brand gradient on hover + glow
   ========================================================================== */

/* Tighter section rhythm */
:root { --section-py: 64px; }
@media (max-width: 1023px) { :root { --section-py: 56px; } }
@media (max-width: 767px)  { :root { --section-py: 40px; } }

/* Reduce section-sub bottom gap (since section py already smaller) */
.section-sub { margin-bottom: 48px; }
@media (max-width: 1023px) { .section-sub { margin-bottom: 36px; } }
@media (max-width: 767px)  { .section-sub { margin-bottom: 28px; } }

/* Reduce hero vertical padding so hero ↔ problem distance is balanced */
.hero { padding-top: 56px; padding-bottom: 56px; }
@media (max-width: 767px) { .hero { padding-top: 32px; padding-bottom: 32px; } }

/* ---------------------------------------------------------------------
   BRAND-COLORED CARD BORDERS — replace neutral grey3 with green-soft tint
   Applies to: .problem-card · .solution-card · .icp-card · .trust-card · .bento-cell
   --------------------------------------------------------------------- */

.problem-card,
.solution-card,
.icp-card,
.trust-card,
.bento-cell {
  /* default state: subtle brand tint instead of neutral grey */
  border: 1.5px solid rgba(7, 183, 122, 0.18);
  position: relative;
  transition: transform 280ms var(--ease),
              border-color 280ms var(--ease),
              box-shadow 280ms var(--ease);
  overflow: hidden;
}

/* HOVER state: gradient border + brand glow shadow */
.problem-card:hover,
.solution-card:hover,
.icp-card:hover,
.trust-card:hover,
.bento-cell:hover {
  transform: translateY(-6px);
  border-color: var(--green);
  box-shadow:
    0 0 0 1px rgba(7, 183, 122, 0.18),
    0 16px 32px -8px rgba(7, 183, 122, 0.24),
    0 8px 16px -4px rgba(7, 183, 122, 0.12);
}

/* Special override: bento-accent (dark cell) keeps its dark border on hover but adds green glow */
.bento-accent { border-color: var(--grey1); }
.bento-accent:hover {
  border-color: var(--green);
  box-shadow:
    0 0 0 1px rgba(7, 183, 122, 0.18),
    0 16px 40px -8px rgba(78, 225, 159, 0.32),
    0 0 24px -4px rgba(78, 225, 159, 0.24);
}

/* Special: bento-hero already has mint gradient bg — strengthen hover */
.bento-hero { border-color: rgba(7, 183, 122, 0.28); }
.bento-hero:hover {
  border-color: var(--green);
  box-shadow:
    0 0 0 1px rgba(7, 183, 122, 0.22),
    0 20px 40px -8px rgba(7, 183, 122, 0.28),
    0 12px 24px -8px rgba(7, 183, 122, 0.18);
}

/* Top accent strip — appears on hover (subtle gradient bar at the top edge) */
.problem-card::before,
.solution-card::before,
.icp-card:not(:hover)::before,  /* icp-card already has gradient::before in v2.4 */
.trust-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--gradient-brand);
  border-radius: var(--r-lg) var(--r-lg) 0 0;
  opacity: 0;
  transition: opacity 240ms var(--ease);
  pointer-events: none;
}
.problem-card:hover::before,
.solution-card:hover::before,
.trust-card:hover::before {
  opacity: 1;
}

/* ---------------------------------------------------------------------
   FAQ accordion items — same border treatment as cards
   --------------------------------------------------------------------- */
.faq-item {
  border: 1.5px solid rgba(7, 183, 122, 0.16);
  transition: border-color 240ms var(--ease), box-shadow 240ms var(--ease);
}
.faq-item:hover:not(.open),
.faq-item.open {
  border-color: var(--green);
  box-shadow:
    0 0 0 1px rgba(7, 183, 122, 0.14),
    0 8px 20px -4px rgba(7, 183, 122, 0.16);
}

/* ---------------------------------------------------------------------
   Bento cell — special hover shadow that matches each cell's accent color
   --------------------------------------------------------------------- */
.bento-md:hover {
  border-color: var(--green);
  box-shadow:
    0 0 0 1px rgba(7, 183, 122, 0.16),
    0 14px 28px -8px rgba(7, 183, 122, 0.22);
}
.bento-wide:hover {
  border-color: var(--green);
  box-shadow:
    0 0 0 1px rgba(7, 183, 122, 0.18),
    0 16px 32px -10px rgba(7, 183, 122, 0.24);
}

/* ---------------------------------------------------------------------
   Lead form card border — also brand tinted
   --------------------------------------------------------------------- */
.lead-card {
  border: 1.5px solid rgba(7, 183, 122, 0.20);
  transition: border-color 280ms var(--ease), box-shadow 280ms var(--ease);
}
.lead-card:hover {
  border-color: var(--green);
  box-shadow:
    0 0 0 1px rgba(7, 183, 122, 0.16),
    0 20px 40px -10px rgba(7, 183, 122, 0.18);
}

/* Inner form card also brand tinted */
.lead-form {
  border: 1.5px solid rgba(7, 183, 122, 0.14);
  transition: border-color 240ms var(--ease);
}
.lead-form:focus-within { border-color: var(--green); }

/* Input focus state — already exists, just ensure it stays green */
.lead-form .form-group input:focus,
.lead-form .form-group select:focus {
  border-color: var(--green) !important;
  box-shadow: 0 0 0 3px rgba(7, 183, 122, 0.16);
}

/* ---------------------------------------------------------------------
   Mock dashboard (in Hero) — give it brand-tinted border too
   --------------------------------------------------------------------- */
.hero-visual {
  border-color: rgba(7, 183, 122, 0.20);
}

/* ==========================================================================
   v2.7 — EYEBROW TAGS + STATS SECTION (adopted from LADIPAGE-DEMO)
   ========================================================================== */

/* ---------------------------------------------------------------------
   Eyebrow pill — UPPERCASE tag above section titles (visual signpost)
   --------------------------------------------------------------------- */
.eyebrow {
  display: inline-block;
  padding: 6px 14px;
  border-radius: var(--r-pill);
  background: rgba(7, 183, 122, 0.10);
  border: 1px solid rgba(7, 183, 122, 0.22);
  color: var(--green-text);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: 0 auto 16px;
  text-align: center;
}

/* Center align eyebrow within section (section-title is text-align center) */
section .container > .eyebrow {
  display: block;
  width: fit-content;
}

@media (max-width: 767px) {
  .eyebrow {
    font-size: 11px;
    padding: 5px 12px;
    margin-bottom: 12px;
    letter-spacing: 0.06em;
  }
}

/* ---------------------------------------------------------------------
   STATS SECTION (v2.7 — Phase B) — LIGHT THEME (consistent w/ landing)
   Section [1.5] — after Hero, before Problem
   --------------------------------------------------------------------- */
.stats-section {
  background: linear-gradient(180deg, var(--bg-page) 0%, #f0fdf4 100%);
  position: relative;
  overflow: hidden;
  padding: 64px 0;
}
@media (max-width: 1023px) { .stats-section { padding: 56px 0; } }
@media (max-width: 767px)  { .stats-section { padding: 44px 0; } }

/* Subtle mint glow corners — same vocabulary as Hero / Features */
.stats-section::before,
.stats-section::after {
  content: "";
  position: absolute;
  width: 40%;
  aspect-ratio: 1;
  background: radial-gradient(circle, rgba(7, 183, 122, 0.10) 0%, transparent 65%);
  pointer-events: none;
}
.stats-section::before { top: -20%; left: -10%; }
.stats-section::after  { bottom: -20%; right: -10%; }

.stats-section .container {
  position: relative;
  z-index: 1;
  text-align: center;
}
/* Stats inherits global .eyebrow (green-soft pill) — no overrides */
.stats-section .section-title {
  font-size: var(--fs-4xl);
  margin-bottom: 8px;
  padding-bottom: 0;
  color: var(--grey1);
}
.stats-section .section-title::after { display: none; }
/* Inherit global .gradient-text — green brand gradient */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 40px;
}
@media (max-width: 1023px) { .stats-grid { gap: 20px; } }
@media (max-width: 767px) {
  .stats-grid { grid-template-columns: 1fr; gap: 16px; margin-top: 28px; }
}

/* Stat card — light card, brand-tinted border (matches other cards v2.6) */
.stat-card {
  background: var(--white);
  border: 1.5px solid rgba(7, 183, 122, 0.18);
  border-radius: var(--r-lg);
  padding: 32px 24px;
  transition: transform 280ms var(--ease),
              border-color 280ms var(--ease),
              box-shadow 280ms var(--ease);
}
.stat-card:hover {
  transform: translateY(-6px);
  border-color: var(--green);
  box-shadow:
    0 0 0 1px rgba(7, 183, 122, 0.18),
    0 16px 32px -8px rgba(7, 183, 122, 0.20),
    0 8px 16px -4px rgba(7, 183, 122, 0.12);
}

.stat-value {
  font-size: 48px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.02em;
  background: var(--gradient-brand);   /* brand mint→teal, consistent */
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  margin-bottom: 12px;
  font-variant-numeric: tabular-nums;
}
@media (min-width: 1024px) { .stat-value { font-size: 64px; } }
@media (max-width: 767px)  { .stat-value { font-size: 40px; } }

.stat-label {
  color: var(--grey);
  font-size: var(--fs-md);
  line-height: 1.5;
  margin: 0;
}

/* ---------------------------------------------------------------------
   Spacing tweaks — eyebrow đè lên margin-top section bị tightened lại
   --------------------------------------------------------------------- */
section .eyebrow + .section-title { margin-top: 0; }
section .eyebrow + .solution-title-combo { margin-top: 0; }

/* ==========================================================================
   v2.8 — FEATURES 3x3 GRID WITH CENTER SHOWCASE (replaces bento)
   Theo design mockup user gửi 2026-05-17
   ========================================================================== */

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: auto auto auto;
  gap: 20px;
  margin-bottom: 48px;
}

.feature-cell {
  background: var(--white);
  border: 1.5px solid rgba(7, 183, 122, 0.18);
  border-radius: 20px;
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  transition: transform 280ms var(--ease),
              border-color 280ms var(--ease),
              box-shadow 280ms var(--ease);
}
.feature-cell:hover {
  transform: translateY(-6px);
  border-color: var(--green);
  box-shadow:
    0 0 0 1px rgba(7, 183, 122, 0.16),
    0 16px 32px -8px rgba(7, 183, 122, 0.22),
    0 8px 16px -4px rgba(7, 183, 122, 0.12);
}

.feature-icon {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--green);
  color: var(--white);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  flex-shrink: 0;
}
.feature-icon i { width: 22px; height: 22px; }

.feature-cell h3 {
  font-size: var(--fs-lg);   /* 18px */
  font-weight: 700;
  color: var(--grey1);
  line-height: 1.3;
  margin-bottom: 10px;
}
.feature-cell p {
  font-size: var(--fs-sm);   /* 13px */
  color: var(--grey);
  line-height: 1.6;
  margin: 0;
}

/* Spacer cell (row 3 middle position to balance grid when showcase only takes row 2) */
.feature-cell-spacer {
  background: transparent;
  border: 0;
  padding: 0;
  pointer-events: none;
}
.feature-cell-spacer:hover {
  transform: none;
  box-shadow: none;
  border-color: transparent;
}

/* ---------- CENTER SHOWCASE — radial green stage with floating icons ---------- */
.feature-showcase {
  position: relative;
  background: linear-gradient(165deg, #17E180 0%, #07b77a 60%, #009883 100%);
  border-radius: 20px;
  min-height: 320px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow:
    0 16px 36px -8px rgba(7, 183, 122, 0.32),
    0 8px 16px -4px rgba(0, 152, 131, 0.20);
}
.showcase-glow {
  position: absolute;
  inset: -20%;
  background:
    radial-gradient(circle at 30% 30%, rgba(255,255,255,0.30) 0%, transparent 50%),
    radial-gradient(circle at 70% 80%, rgba(255,255,255,0.15) 0%, transparent 50%);
  pointer-events: none;
}

.showcase-icons {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.showcase-icon {
  position: absolute;
  width: 40px; height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.95);
  color: var(--green-text);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 6px 16px rgba(0, 152, 131, 0.30);
  animation: showcase-float 4s ease-in-out infinite;
}
.showcase-icon i { width: 20px; height: 20px; }

/* 8 icons arranged in octagonal orbit around the center platform */
.showcase-icon-1 { top:  8%; left: 50%; transform: translateX(-50%); animation-delay: 0s;   }   /* top */
.showcase-icon-2 { top: 18%; right: 12%; animation-delay: 0.3s; }                              /* top-right */
.showcase-icon-3 { top: 48%; right: 4%;  transform: translateY(-50%); animation-delay: 0.6s; } /* right */
.showcase-icon-4 { bottom: 18%; right: 12%; animation-delay: 0.9s; }                           /* bottom-right */
.showcase-icon-5 { bottom: 8%; left: 50%; transform: translateX(-50%); animation-delay: 1.2s; }/* bottom */
.showcase-icon-6 { bottom: 18%; left: 12%; animation-delay: 1.5s; }                            /* bottom-left */
.showcase-icon-7 { top: 48%; left: 4%;   transform: translateY(-50%); animation-delay: 1.8s; } /* left */
.showcase-icon-8 { top: 18%; left: 12%; animation-delay: 2.1s; }                               /* top-left */

@keyframes showcase-float {
  0%, 100% { transform: translateY(0) translateX(var(--tx, 0)); }
  50%      { transform: translateY(-6px) translateX(var(--tx, 0)); }
}
/* Preserve horizontal centering for top/bottom icons during animation */
.showcase-icon-1, .showcase-icon-5 { --tx: -50%; }
/* Preserve vertical centering for left/right icons during animation */
.showcase-icon-3, .showcase-icon-7 {
  animation-name: showcase-float-y;
}
@keyframes showcase-float-y {
  0%, 100% { transform: translateY(-50%); }
  50%      { transform: translateY(calc(-50% - 6px)); }
}

/* Platform / base — isometric-feeling card showing Ads logo */
.showcase-platform {
  position: relative;
  z-index: 2;
  width: 130px;
  height: 130px;
  border-radius: 18px;
  background: linear-gradient(160deg, #ffffff 0%, #e8fff6 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  box-shadow:
    0 12px 28px rgba(0, 0, 0, 0.18),
    0 0 0 4px rgba(255, 255, 255, 0.40),
    inset 0 -8px 16px rgba(0, 152, 131, 0.08);
  transform: rotate(-4deg);
}
.showcase-platform img { width: 56px; height: 56px; }
.showcase-label {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.16em;
  color: var(--green-text);
}

@media (prefers-reduced-motion: reduce) {
  .showcase-icon { animation: none; }
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 1023px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .feature-showcase {
    grid-column: 1 / -1;
    min-height: 220px;
    order: 0;     /* keep in flow */
  }
  .feature-cell-spacer { display: none; }
}

@media (max-width: 767px) {
  .features-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .feature-cell {
    padding: 22px 20px;
  }
  .feature-cell h3 { font-size: var(--fs-md); }
  .feature-showcase {
    min-height: 240px;
  }
  .showcase-platform { width: 100px; height: 100px; }
  .showcase-platform img { width: 44px; height: 44px; }
  .showcase-label { font-size: 10px; letter-spacing: 0.14em; }
  .showcase-icon { width: 32px; height: 32px; }
  .showcase-icon i { width: 16px; height: 16px; }
}

/* Hide legacy bento decorations rules that no longer apply (no HTML uses them anymore) */
.bento-decorations, .bento-glow, .bento-grid-bg { display: none; }

/* ==========================================================================
   v2.10 — FAQ proof primary (nổi bật cho FAQ Q1 sau khi bỏ steps)
   ========================================================================== */
.faq-answer-inner .faq-proof-primary {
  background: linear-gradient(135deg, var(--green-active-bg) 0%, #f0fdf4 100%);
  border-left: 4px solid var(--green);
  border-radius: var(--r-md);
  padding: 20px 24px;
  margin: 0;
  font-size: var(--fs-md);
  line-height: 1.65;
  color: var(--grey1);
  font-weight: 500;
}
.faq-answer-inner .faq-proof-primary a {
  color: var(--green-text);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.faq-answer-inner .faq-proof-primary a:hover { text-decoration-thickness: 2px; }

@media (max-width: 767px) {
  .faq-answer-inner .faq-proof-primary {
    padding: 16px 18px;
    font-size: var(--fs-sm);
    line-height: 1.6;
  }
}

/* ================================================================
   LANGUAGE PICKER MODAL (first-visit popup)
   ================================================================ */
.lang-modal {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: lang-fade-in 240ms var(--ease);
}
.lang-modal[hidden] { display: none; }
.lang-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 22, 28, 0.55);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
.lang-modal-dialog {
  position: relative;
  width: 100%;
  max-width: 640px;
  max-height: calc(100vh - 40px);
  overflow-y: auto;
  background: var(--white);
  border-radius: var(--r-lg, 20px);
  padding: 36px 32px 32px;
  box-shadow: 0 30px 80px -20px rgba(7, 117, 88, 0.32), 0 16px 32px -8px rgba(0, 0, 0, 0.16);
  animation: lang-pop-in 320ms var(--ease);
}
.lang-modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--grey4, #f5f6f7);
  border: none;
  border-radius: 50%;
  color: var(--grey1);
  cursor: pointer;
  transition: all 180ms var(--ease);
}
.lang-modal-close:hover {
  background: var(--green-soft);
  color: var(--green-text);
}
.lang-modal-header {
  text-align: center;
  margin-bottom: 24px;
}
.lang-modal-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--green-soft);
  color: var(--green-text);
  border-radius: 50%;
}
.lang-modal-header h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--grey1);
  margin: 0 0 8px;
}
.lang-modal-sub {
  font-size: 13px;
  color: var(--grey);
  margin: 0;
  line-height: 1.5;
}
.lang-modal-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}
.lang-option {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 18px 12px;
  border: 1.5px solid var(--grey3);
  border-radius: var(--r-md, 14px);
  background: var(--white);
  cursor: pointer;
  text-align: center;
  transition: all 200ms var(--ease);
}
.lang-option:hover {
  border-color: var(--green);
  background: var(--green-soft);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px -8px rgba(7, 183, 122, 0.30);
}
.lang-option .lang-flag {
  font-size: 36px;
  line-height: 1;
  margin-bottom: 6px;
}
.lang-option .lang-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--grey1);
}
.lang-option .lang-country {
  font-size: 12px;
  color: var(--grey);
}

@keyframes lang-fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes lang-pop-in {
  from { opacity: 0; transform: translateY(20px) scale(0.96); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@media (max-width: 600px) {
  .lang-modal-dialog { padding: 28px 20px 24px; }
  .lang-modal-header h2 { font-size: 20px; }
  .lang-modal-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .lang-option { padding: 14px 10px; }
  .lang-option .lang-flag { font-size: 30px; }
}