/* ============================================================
   Design System: Emerald Trust Gaming UI
   Site: tk999-bet.win | Market: Bangladesh
   ============================================================ */

:root {
  --color-primary: #0d7c3d;
  --color-primary-dark: #065a2b;
  --color-primary-soft: #e8f5ec;
  --color-secondary: #1a1a2e;
  --color-accent: #f0a500;
  --color-bg: #f8faf9;
  --color-bg-soft: #f0f4f2;
  --color-surface: #ffffff;
  --color-surface-strong: #e8ece9;
  --color-card: #ffffff;
  --color-card-alt: #f4f8f5;
  --color-border: #d4ddd7;
  --color-border-strong: #a8b8ad;
  --color-text: #1a2b1f;
  --color-text-soft: #4a5d4f;
  --color-text-muted: #7a8d7f;
  --color-success: #28a745;
  --color-warning: #f0a500;
  --color-danger: #dc3545;
  --color-footer-bg: #0f1923;
  --color-footer-text: #b8c5bd;

  --gradient-hero: linear-gradient(135deg, #0d7c3d 0%, #065a2b 60%, #1a1a2e 100%);
  --gradient-button: linear-gradient(135deg, #0d7c3d, #28a745);
  --gradient-button-hover: linear-gradient(135deg, #065a2b, #0d7c3d);
  --gradient-cta: linear-gradient(135deg, #0d7c3d 0%, #1a1a2e 100%);
  --gradient-footer: linear-gradient(180deg, #0f1923 0%, #0a1118 100%);

  --shadow-header: 0 2px 16px rgba(13,124,61,.12);
  --shadow-card: 0 2px 12px rgba(0,0,0,.06);
  --shadow-card-hover: 0 8px 28px rgba(13,124,61,.14);
  --shadow-button: 0 3px 10px rgba(13,124,61,.2);
  --shadow-soft: 0 1px 4px rgba(0,0,0,.04);

  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-pill: 50px;
  --radius-card: 14px;

  --font-base: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, "Noto Sans Bengali", sans-serif;
  --fs-h1: clamp(28px, 4vw, 48px);
  --fs-h2: clamp(22px, 3vw, 36px);
  --fs-h3: clamp(18px, 2vw, 24px);
  --fs-body: 17px;
  --fs-small: 14px;
  --lh-body: 1.85;
  --lh-heading: 1.25;

  --container-wide: 1200px;
  --container-narrow: 820px;
  --section-y: clamp(48px, 6vw, 80px);
  --gap-sm: 12px;
  --gap-md: 20px;
  --gap-lg: 32px;
  --header-h: 72px;

  --motion-fast: .15s;
  --motion-normal: .3s;
  --ease-out: cubic-bezier(.25,.46,.45,.94);
}

/* RESET */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-base); background: var(--color-bg); color: var(--color-text); line-height: var(--lh-body); font-size: var(--fs-body); overflow-x: hidden; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; transition: color var(--motion-fast); }
a:hover { color: var(--color-primary-dark); }
ul, ol { list-style: none; }
:focus-visible { outline: 3px solid var(--color-accent); outline-offset: 2px; border-radius: var(--radius-xs); }

/* CONTAINERS */
.container-wide { max-width: var(--container-wide); margin: 0 auto; padding: 0 clamp(16px, 3vw, 24px); }
.container-narrow { max-width: var(--container-narrow); margin: 0 auto; padding: 0 clamp(16px, 3vw, 24px); }
.text-center { text-align: center; }

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: sticky; top: 0; z-index: 1000; width: 100%;
  background: var(--gradient-hero);
  box-shadow: var(--shadow-header);
  transition: box-shadow var(--motion-normal);
}
.header-inner {
  width: 100%; max-width: none;
  padding-left: clamp(10px, 1.2vw, 20px);
  padding-right: clamp(10px, 1.2vw, 20px);
  min-height: var(--header-h);
  display: flex; align-items: center;
  gap: clamp(10px, 1vw, 18px);
}
.brand-wrap { flex: 0 0 auto; margin-right: clamp(4px, .8vw, 14px); }
.site-logo {
  display: block; width: auto;
  height: clamp(32px, 3vw, 42px);
  max-width: clamp(118px, 10vw, 168px);
  object-fit: contain;
}
.primary-nav {
  flex: 1 1 auto; min-width: 0;
  display: flex; align-items: center; justify-content: center;
  flex-wrap: nowrap; gap: clamp(6px, .72vw, 14px);
  white-space: nowrap; overflow: visible;
}
.primary-nav a {
  flex: 0 1 auto; min-width: 0;
  padding: 9px clamp(6px, .65vw, 12px);
  font-size: clamp(13px, .84vw, 15px);
  line-height: 1; white-space: nowrap;
  color: #d4edda; font-weight: 500;
  border-radius: var(--radius-sm);
  transition: all var(--motion-fast);
}
.primary-nav a:hover { color: #fff; background: rgba(255,255,255,.1); }
.primary-nav a.active { color: #fff; background: rgba(255,255,255,.15); font-weight: 600; }

.header-actions {
  flex: 0 0 auto; margin-left: auto;
  display: flex; align-items: center; justify-content: flex-end;
  gap: clamp(6px, .6vw, 10px); white-space: nowrap;
}

/* BUTTONS */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 10px clamp(14px, 1.5vw, 22px);
  font-size: clamp(13px, .9vw, 15px); font-weight: 600;
  border-radius: var(--radius-sm); border: none; cursor: pointer;
  transition: all var(--motion-fast) var(--ease-out);
  white-space: nowrap; text-decoration: none; line-height: 1.2;
}
.btn-register {
  background: var(--gradient-button); color: #fff;
  box-shadow: var(--shadow-button);
}
.btn-register:hover { background: var(--gradient-button-hover); color: #fff; transform: translateY(-1px); }
.btn-login {
  background: rgba(255,255,255,.12); color: #d4edda;
  border: 1px solid rgba(255,255,255,.25);
}
.btn-login:hover { background: rgba(255,255,255,.2); color: #fff; }
.btn-outline {
  background: transparent; color: var(--color-primary);
  border: 2px solid var(--color-primary);
}
.btn-outline:hover { background: var(--color-primary); color: #fff; }
.btn-lg { padding: 14px 32px; font-size: 16px; border-radius: var(--radius-md); }
.btn-block { width: 100%; }

/* NAV TOGGLE */
.nav-toggle {
  display: none; flex: 0 0 40px; width: 40px; height: 40px;
  align-items: center; justify-content: center;
  background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.2);
  border-radius: var(--radius-sm); cursor: pointer; padding: 0;
  flex-direction: column; gap: 5px; margin-left: 2px;
}
.nav-toggle span { display: block; width: 20px; height: 2px; background: #fff; border-radius: 2px; transition: all var(--motion-fast); }

/* MOBILE MENU */
.mobile-menu {
  display: none; position: fixed;
  left: 12px; right: 12px; top: calc(var(--header-h) + 8px);
  background: var(--color-secondary); border-radius: var(--radius-lg);
  padding: 16px; flex-direction: column; gap: 2px;
  max-height: calc(100vh - var(--header-h) - 24px); overflow-y: auto;
  box-shadow: 0 12px 40px rgba(0,0,0,.4); z-index: 999;
}
.mobile-menu.is-open { display: flex; }
.mobile-menu a {
  display: block; padding: 14px 16px; color: #d4edda; font-weight: 500;
  border-radius: var(--radius-sm); font-size: 15px;
}
.mobile-menu a:hover, .mobile-menu a.active { background: rgba(13,124,61,.3); color: #fff; }

@media (max-width: 1180px) {
  .primary-nav { display: none; }
  .nav-toggle { display: inline-flex; }
  .site-header .header-inner {
    width: 100%; max-width: none;
    padding-left: clamp(8px, 2.4vw, 14px);
    padding-right: clamp(8px, 2.4vw, 14px);
    justify-content: flex-start;
    gap: clamp(6px, 1.8vw, 10px);
  }
  .brand-wrap { flex: 0 1 auto; margin-right: 0; }
  .site-logo { height: clamp(30px, 8vw, 40px); max-width: clamp(104px, 27vw, 138px); }
  .header-actions { margin-left: auto; gap: clamp(5px, 1.6vw, 8px); }
  .header-actions .btn { min-height: 40px; padding-inline: clamp(10px, 2.6vw, 14px); font-size: clamp(12px, 3.2vw, 14px); }
}
@media (max-width: 375px) {
  .site-header .header-inner { padding-left: 8px; padding-right: 8px; gap: 6px; }
  .site-logo { max-width: 104px; }
  .header-actions .btn { min-height: 38px; padding-inline: 9px; font-size: 12px; }
  .nav-toggle { flex-basis: 38px; width: 38px; height: 38px; }
}

/* ============================================================
   SECTIONS
   ============================================================ */
section { padding: var(--section-y) 0; }
.section-alt { background: var(--color-bg-soft); }
.section-heading {
  font-size: var(--fs-h2); line-height: var(--lh-heading);
  color: var(--color-text); font-weight: 700; margin-bottom: var(--gap-lg);
  position: relative; padding-bottom: 16px;
}
.section-heading::after {
  content: ""; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%);
  width: 60px; height: 3px; background: var(--color-primary); border-radius: 2px;
}
.section-subhead { color: var(--color-text-soft); max-width: 680px; margin: -16px auto 32px; font-size: 16px; }
h1 { font-size: var(--fs-h1); line-height: var(--lh-heading); font-weight: 700; color: var(--color-text); margin-bottom: 20px; }
h2 { font-size: var(--fs-h2); line-height: var(--lh-heading); font-weight: 700; color: var(--color-text); margin-bottom: 18px; }
h3 { font-size: var(--fs-h3); line-height: 1.35; font-weight: 600; color: var(--color-text); margin-bottom: 12px; }
p { margin-bottom: 16px; }

/* HERO */
.home-hero {
  background: var(--gradient-hero); color: #fff;
  padding: clamp(48px, 8vw, 96px) 0 clamp(40px, 6vw, 72px);
}
.home-hero h1 { color: #fff; max-width: 900px; margin: 0 auto 24px; }
.hero-lead { color: #d4edda; font-size: clamp(16px, 1.8vw, 19px); max-width: 780px; margin: 0 auto 32px; line-height: 1.7; }
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.home-hero .btn-outline { color: #fff; border-color: rgba(255,255,255,.4); }
.home-hero .btn-outline:hover { background: rgba(255,255,255,.15); border-color: #fff; }

/* PAGE INTRO (inner pages) */
.page-intro { background: var(--gradient-hero); color: #fff; padding: clamp(32px, 5vw, 56px) 0; }
.page-intro h1 { color: #fff; }
.page-intro .page-lead { color: #d4edda; max-width: 780px; font-size: 16px; }
.page-intro .content-image { border-radius: var(--radius-md); margin-top: 24px; }

/* CONTENT FLOW */
.content-flow { padding: var(--section-y) 0; }
.content-split {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: var(--gap-lg); align-items: center;
}
.content-split.reverse .content-visual { order: -1; }
.content-image { border-radius: var(--radius-md); box-shadow: var(--shadow-card); width: 100%; height: auto; }
.content-image-wide { max-width: 800px; margin: 0 auto 28px; display: block; }

@media (max-width: 768px) {
  .content-split { grid-template-columns: 1fr; }
  .content-split.reverse .content-visual { order: 0; }
}

/* CARDS */
.feature-grid, .responsible-grid, .review-grid, .values-grid, .safety-grid, .related-grid, .category-grid {
  display: grid; gap: var(--gap-md);
}
.feature-grid { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.responsible-grid { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
.review-grid { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }
.values-grid { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.safety-grid { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }
.related-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
.category-grid { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }

.feature-card, .responsible-card, .review-card, .value-card, .safety-item, .trust-card, .device-card {
  background: var(--color-card); border-radius: var(--radius-card); padding: 28px 24px;
  box-shadow: var(--shadow-card); border: 1px solid var(--color-border);
  transition: all var(--motion-normal) var(--ease-out);
}
.feature-card:hover, .review-card:hover, .value-card:hover {
  transform: translateY(-4px); box-shadow: var(--shadow-card-hover); border-color: var(--color-primary);
}
.feature-icon-wrap { font-size: 2.2rem; margin-bottom: 12px; }
.related-card {
  display: block; background: var(--color-card); border-radius: var(--radius-card);
  padding: 24px; border: 1px solid var(--color-border);
  box-shadow: var(--shadow-soft); transition: all var(--motion-normal);
  color: var(--color-text);
}
.related-card:hover { border-color: var(--color-primary); transform: translateY(-3px); box-shadow: var(--shadow-card-hover); color: var(--color-text); }
.related-card h3 { color: var(--color-primary); }
.category-card {
  display: block; background: var(--color-card); border-radius: var(--radius-card);
  padding: 28px; border: 2px solid var(--color-border); text-align: center;
  transition: all var(--motion-normal); color: var(--color-text);
}
.category-card:hover { border-color: var(--color-primary); transform: translateY(-4px); box-shadow: var(--shadow-card-hover); color: var(--color-text); }
.category-card h3 { color: var(--color-primary); }

/* STEPS */
.steps-grid, .steps-flow, .guide-steps {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: var(--gap-md);
}
.step-card {
  background: var(--color-card); border-radius: var(--radius-card);
  padding: 28px 24px; border-left: 4px solid var(--color-primary);
  box-shadow: var(--shadow-card);
}
.step-num, .guide-num {
  display: inline-flex; width: 36px; height: 36px; align-items: center; justify-content: center;
  background: var(--color-primary); color: #fff; border-radius: 50%;
  font-weight: 700; font-size: 16px; margin-bottom: 12px;
}
.guide-step { background: var(--color-card); border-radius: var(--radius-card); padding: 24px; box-shadow: var(--shadow-soft); border: 1px solid var(--color-border); }

/* REVIEWS */
.review-stars { margin-bottom: 12px; font-size: 18px; }
.review-author { margin-top: 16px; }
.review-author strong { display: block; }
.review-author span { color: var(--color-text-muted); font-size: var(--fs-small); }

/* PRICING */
.pricing-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: var(--gap-lg); align-items: start; }
.pricing-card {
  background: var(--color-card); border-radius: var(--radius-lg); padding: 36px 28px;
  border: 2px solid var(--color-border); box-shadow: var(--shadow-card);
  text-align: center; transition: all var(--motion-normal);
  position: relative;
}
.pricing-card.featured { border-color: var(--color-primary); transform: scale(1.03); }
.pricing-card:hover { border-color: var(--color-primary); }
.pricing-badge {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  background: var(--color-primary); color: #fff; padding: 4px 18px;
  border-radius: var(--radius-pill); font-size: 13px; font-weight: 600;
}
.price-tag { font-size: 2.5rem; color: var(--color-primary); font-weight: 700; margin: 16px 0; }
.price-tag span { font-size: 16px; color: var(--color-text-muted); font-weight: 400; }
.pricing-card ul { text-align: left; margin: 20px 0; }
.pricing-card li { padding: 8px 0; border-bottom: 1px solid var(--color-border); font-size: 15px; }
.pricing-card li::before { content: "\2713 "; color: var(--color-success); font-weight: 700; margin-right: 8px; }

/* COMPARISON TABLE */
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.compare-table { width: 100%; border-collapse: collapse; background: var(--color-card); border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-card); }
.compare-table th { background: var(--color-primary); color: #fff; padding: 14px 18px; text-align: left; font-weight: 600; }
.compare-table td { padding: 14px 18px; border-bottom: 1px solid var(--color-border); }
.compare-table tr:last-child td { border-bottom: none; }

/* NOTICE BOX */
.notice-box {
  background: var(--color-primary-soft); border-left: 4px solid var(--color-primary);
  padding: 20px 24px; border-radius: var(--radius-sm); margin: 20px 0;
}
.notice-box h4 { color: var(--color-primary-dark); margin-bottom: 8px; }

/* FAQ */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { margin-bottom: 8px; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-card); overflow: hidden; }
.faq-trigger {
  width: 100%; display: flex; align-items: center; justify-content: space-between;
  padding: 18px 20px; background: none; border: none; cursor: pointer;
  font-size: 16px; font-weight: 600; color: var(--color-text); text-align: left;
  font-family: var(--font-base); gap: 12px;
}
.faq-trigger:hover { color: var(--color-primary); }
.faq-icon { flex-shrink: 0; transition: transform var(--motion-fast); }
.faq-trigger[aria-expanded="true"] .faq-icon { transform: rotate(180deg); }
.faq-answer { display: none; padding: 0 20px 18px; color: var(--color-text-soft); line-height: 1.8; }
.faq-trigger[aria-expanded="true"] + .faq-answer { display: block; }

/* DATA GRID */
.data-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: var(--gap-md); margin-bottom: 28px; }
.data-item { text-align: center; background: var(--color-card); padding: 28px; border-radius: var(--radius-md); box-shadow: var(--shadow-soft); }
.data-num { display: block; font-size: 2.2rem; font-weight: 700; color: var(--color-primary); margin-bottom: 8px; }

/* RESPONSIBLE GAMING */
.home-responsible { background: var(--color-primary-soft); padding: var(--section-y) 0; }

/* FINAL CTA */
.home-final-cta, .page-cta {
  background: var(--gradient-cta); color: #fff; padding: var(--section-y) 0;
}
.home-final-cta h2, .page-cta h2 { color: #fff; }
.home-final-cta p, .page-cta p { color: #d4edda; max-width: 780px; margin: 0 auto 28px; }

/* AUTH PAGES */
.auth-layout { display: grid; grid-template-columns: 1fr 1fr; gap: var(--gap-lg); align-items: start; }
.auth-form-card, .register-card {
  background: var(--color-card); padding: 32px; border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card); border: 1px solid var(--color-border);
}
.auth-form .form-group { margin-bottom: 18px; }
.auth-form label { display: block; margin-bottom: 6px; font-weight: 600; font-size: 14px; color: var(--color-text); }
.auth-form input {
  width: 100%; padding: 12px 16px; border: 2px solid var(--color-border);
  border-radius: var(--radius-sm); font-size: 15px; font-family: var(--font-base);
  transition: border-color var(--motion-fast);
}
.auth-form input:focus { border-color: var(--color-primary); outline: none; }
.form-helper { text-align: center; margin-top: 16px; font-size: 14px; }
.auth-intro { background: var(--color-bg-soft); }
.auth-lead { color: var(--color-text-soft); margin-bottom: 24px; }
.auth-trust-cards, .register-benefits { margin-top: 24px; }
.register-benefits ul { list-style: none; padding: 0; }
.register-benefits li { padding: 8px 0; font-size: 15px; }
.help-list { display: grid; gap: var(--gap-md); margin: 24px 0; }
.help-item { background: var(--color-card); padding: 24px; border-radius: var(--radius-md); border: 1px solid var(--color-border); }

@media (max-width: 768px) {
  .auth-layout { grid-template-columns: 1fr; }
  .pricing-card.featured { transform: scale(1); }
}

/* POLICY PAGES */
.policy-intro { background: var(--color-bg-soft); padding: clamp(32px, 5vw, 48px) 0; }
.policy-updated { color: var(--color-text-muted); font-size: var(--fs-small); margin-bottom: 8px; }
.policy-body { padding: 40px 0; }
.policy-body h2 { margin-top: 36px; padding-top: 24px; border-top: 1px solid var(--color-border); }
.policy-body h2:first-of-type { margin-top: 0; padding-top: 0; border-top: none; }
.policy-note { background: var(--color-primary-soft); padding: 20px; border-radius: var(--radius-md); margin: 28px 0; }

/* BREADCRUMB */
.breadcrumb { padding: 12px 0; background: var(--color-bg-soft); border-bottom: 1px solid var(--color-border); }
.breadcrumb ol { display: flex; align-items: center; gap: 8px; max-width: var(--container-wide); margin: 0 auto; padding: 0 clamp(16px, 3vw, 24px); font-size: var(--fs-small); flex-wrap: wrap; }
.breadcrumb li { display: flex; align-items: center; gap: 8px; color: var(--color-text-muted); }
.breadcrumb li::after { content: "/"; color: var(--color-border-strong); }
.breadcrumb li:last-child::after { display: none; }
.breadcrumb a { color: var(--color-primary); }

/* DEVICE GRID */
.device-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: var(--gap-lg); margin-bottom: 28px; }
.device-card ol { list-style: decimal; padding-left: 20px; }
.device-card li { margin-bottom: 8px; }

/* ERROR PAGE */
.error-page { padding: clamp(80px, 12vw, 160px) 0; }
.error-page h1 { font-size: clamp(36px, 6vw, 64px); color: var(--color-primary); }
.error-actions { display: flex; gap: 16px; justify-content: center; margin-top: 32px; }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer { background: var(--gradient-footer); color: var(--color-footer-text); padding: 48px 0 24px; margin-top: 0; }
.footer-inner { max-width: var(--container-wide); margin: 0 auto; padding: 0 clamp(16px, 3vw, 24px); display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: var(--gap-lg); }
.footer-logo { margin-bottom: 16px; opacity: .85; }
.footer-brand p { font-size: var(--fs-small); line-height: 1.7; }
.footer-links-group h4 { color: #fff; font-size: 16px; margin-bottom: 16px; font-weight: 600; }
.footer-links-group ul { list-style: none; padding: 0; }
.footer-links-group li { margin-bottom: 10px; }
.footer-links-group a { color: var(--color-footer-text); font-size: var(--fs-small); transition: color var(--motion-fast); }
.footer-links-group a:hover { color: #fff; }
.footer-bottom {
  max-width: var(--container-wide); margin: 32px auto 0; padding: 20px clamp(16px, 3vw, 24px) 0;
  border-top: 1px solid rgba(255,255,255,.1); text-align: center; font-size: 13px;
}
@media (max-width: 768px) {
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 480px) { .footer-inner { grid-template-columns: 1fr; } }

/* AOS DEGRADE */
[data-aos] { opacity: 1 !important; transform: none !important; }
.aos-animate { opacity: 1 !important; }

/* REDUCED MOTION */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
}

/* SMALL SCREEN FIXES */
@media (max-width: 414px) {
  section { padding: clamp(32px, 5vw, 48px) 0; }
  .feature-grid, .steps-grid, .guide-steps { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; }
  .data-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 375px) {
  body { font-size: 16px; }
  .btn-lg { padding: 12px 24px; font-size: 15px; }
}