/* @import Google Fonts của template đã bỏ: font tự host ở themes/v2/fonts.css (nạp trong _Head.cshtml) */

/* ===================================================
   DESIGN TOKENS & COLOR SYSTEM (LIGHT & DARK MODES)
   Brand: Cloudzone Blue (#00A1FF)
   Rule: 
   - Nền tối: chữ không quá sáng (dùng #E2E8F0, #94A3B8, KHÔNG dùng #FFFFFF thô)
   - Nền sáng: chữ không quá đen (dùng #112338, #33475B, KHÔNG dùng #000000 thô)
   - Nút màu xanh: chữ màu trắng (#FFFFFF)
=================================================== */

:root {
  /* Brand Primary Colors - Giữ nguyên tone màu xanh Cloudzone (#00A1FF) chuẩn thương hiệu */
  --cz-blue-primary: #00A1FF;
  --cz-blue-hover: #0086D6;
  --cz-blue-dark: #006AAB;
  --cz-blue-light: #38BDF8;
  --cz-blue-glow: rgba(0, 161, 255, 0.28);
  --cz-blue-soft: rgba(0, 161, 255, 0.09);

  /* Status Accents */
  --cz-mint: #00D2B4;
  --cz-mint-soft: rgba(0, 210, 180, 0.12);
  --cz-amber: #FFB020;
  --cz-amber-soft: rgba(255, 176, 32, 0.12);
  --cz-rose: #F43F5E;

  /* Typography */
  --font-body: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-heading: 'Be Vietnam Pro', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Radius & Shadows */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  --transition-slow: 0.4s cubic-bezier(0.16, 1, 0.3, 1);

  /* =========================================
     LIGHT THEME (DEFAULT)
     Sáng, tươi, giữ màu Cloudzone kết hợp độ tương phản text cao
  ========================================= */
  --bg-body: #FFFFFF;
  --bg-surface: #F8FAFD;
  --bg-card: #FFFFFF;
  --bg-header: rgba(255, 255, 255, 0.96);
  --bg-header-border: rgba(0, 161, 255, 0.15);
  /* Hero Backgrounds - Gradient chuyển tiếp liền mạch, rạng rỡ */
  --bg-hero: radial-gradient(120% 85% at 50% 0%, #E1F1FD 0%, #F2F8FE 50%, #FFFFFF 100%);
  --bg-subpage-overlay: rgba(246, 249, 253, 0.72);
  --bg-card-border: rgba(15, 35, 56, 0.08);
  --bg-card-hover-border: rgba(0, 161, 255, 0.45);

  /* Text Colors - Tương phản sắc nét */
  --text-title: #0F172A;
  --text-heading: #1E293B;
  --text-body: #334155;
  --text-muted: #64748B;
  --text-light-sub: #475569;

  /* Nav Links */
  --nav-link-color: #334155;
  --nav-link-hover: #00A1FF;
  --nav-link-active-bg: rgba(0, 161, 255, 0.1);

  /* Shadows - Đổ bóng Cloudzone */
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06), 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 4px 16px -2px rgba(0, 161, 255, 0.10), 0 2px 6px -1px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 12px 32px -4px rgba(0, 161, 255, 0.14), 0 4px 12px -2px rgba(15, 23, 42, 0.05);
  --shadow-xl: 0 20px 48px -8px rgba(0, 161, 255, 0.18), 0 8px 24px -4px rgba(15, 23, 42, 0.06);

  /* Showcase App Box in Hero */
  --showcase-bg: #FFFFFF;
  --showcase-border: rgba(0, 161, 255, 0.22);
  --showcase-header: #F8FAFD;
  --showcase-header-border: rgba(15, 35, 56, 0.08);
  --showcase-text: #1E293B;
  --showcase-sub: #64748B;
  --showcase-panel: #F1F6FD;

  /* Footer */
  --footer-bg: #0B1523;
  --footer-text: #94A3B8;
  --footer-heading: #F1F5F9;
  --footer-border: rgba(255, 255, 255, 0.08);
}

/* =========================================
   DARK THEME [data-theme="dark"]
   Dịu mắt, không dùng chữ #fff quá chói
========================================= */
html[data-theme="dark"] {
  --bg-body: #0A131F;
  --bg-surface: #0E1A29;
  --bg-card: #122133;
  --bg-header: rgba(10, 19, 31, 0.94);
  --bg-header-border: rgba(56, 189, 248, 0.20);
  --bg-hero: radial-gradient(120% 85% at 50% 0%, #142B47 0%, #0E1E31 55%, #0A131F 100%);
  --bg-subpage-overlay: rgba(10, 19, 31, 0.88);
  --bg-card-border: rgba(255, 255, 255, 0.08);
  --bg-card-hover-border: rgba(56, 189, 248, 0.45);

  /* Text Colors - DARK MODE: Sắc nét, tương phản dịu mắt */
  --text-title: #F1F5F9;
  --text-heading: #E2E8F0;
  --text-body: #94A3B8;
  --text-muted: #64748B;
  --text-light-sub: #A0AEC0;

  /* Nav Links */
  --nav-link-color: #CBD5E1;
  --nav-link-hover: #38BDF8;
  --nav-link-active-bg: rgba(56, 189, 248, 0.12);

  /* Showcase App Box in Hero (Dark) */
  --showcase-bg: #0F1E2E;
  --showcase-border: rgba(56, 189, 248, 0.25);
  --showcase-header: #0A1522;
  --showcase-header-border: rgba(255, 255, 255, 0.08);
  --showcase-text: #E2E8F0;
  --showcase-sub: #94A3B8;
  --showcase-panel: #0A1422;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 14px -2px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 30px -4px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 20px 40px -8px rgba(0, 0, 0, 0.6);

  /* Mockup Box in Hero */
  --mockup-bg: #0D1826;
  --mockup-border: rgba(56, 189, 248, 0.25);
  --mockup-header: #070E17;
  --mockup-text: #E2E8F0;
  --mockup-sub: #64748B;

  /* Footer */
  --footer-bg: #08111A;
  --footer-text: #94A3B8;
  --footer-heading: #F1F5F9;
  --footer-border: rgba(255, 255, 255, 0.06);
}

/* Base Styles */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-body);
  color: var(--text-body);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

button, input, select, textarea {
  font-family: inherit;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Container */
.cz-container {
  width: 100%;
  max-width: 1240px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

/* Typography Helpers */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-heading);
}

.font-mono {
  font-family: var(--font-mono);
}

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.text-gradient-cz {
  background: linear-gradient(135deg, var(--cz-blue-primary) 0%, #0086D6 50%, #006AAB 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

html[data-theme="dark"] .text-gradient-cz {
  background: linear-gradient(135deg, #38BDF8 0%, var(--cz-blue-primary) 50%, #60A5FA 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--cz-blue-primary);
  background: var(--cz-blue-soft);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(0, 102, 255, 0.22);
  margin-bottom: 16px;
  box-shadow: 0 2px 8px rgba(0, 102, 255, 0.08);
}

.eyebrow::before {
  content: "";
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--cz-blue-primary);
  box-shadow: 0 0 8px var(--cz-blue-primary);
  flex-shrink: 0;
}

/* ===================================================
   BUTTON SYSTEM
   Quy tắc: Nút màu xanh thì CHỮ MÀU TRẮNG (#FFFFFF)
=================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-size: 0.9375rem;
  font-weight: 600;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-normal);
  line-height: 1.4;
  white-space: nowrap;
}

/* Nút màu xanh: Chữ màu trắng chuẩn theo yêu cầu */
.btn-primary, .btn-phone {
  background: linear-gradient(135deg, #00A1FF 0%, #0086D6 100%);
  color: #FFFFFF !important;
  font-weight: 700;
  box-shadow: 0 4px 14px rgba(0, 161, 255, 0.35);
  border: none;
}

.btn-primary:hover, .btn-phone:hover {
  background: linear-gradient(135deg, #1AB0FF 0%, #00A1FF 100%);
  color: #FFFFFF !important;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 161, 255, 0.5);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-heading);
  border: 1px solid var(--bg-card-border);
}

.btn-secondary:hover {
  border-color: var(--cz-blue-primary);
  color: var(--cz-blue-primary);
  background: var(--cz-blue-soft);
  transform: translateY(-2px);
}

.btn-dark-outline {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-heading);
  border: 1px solid var(--bg-card-border);
  backdrop-filter: blur(8px);
}

.btn-dark-outline:hover {
  background: rgba(0, 102, 255, 0.12);
  border-color: var(--cz-blue-primary);
  color: var(--cz-blue-primary);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.875rem;
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 14px 30px;
  font-size: 1.0625rem;
  border-radius: var(--radius-md);
}

/* Pulse indicator for live phone button */
.pulse-indicator {
  position: relative;
  display: inline-block;
  width: 8px;
  height: 8px;
  background-color: #FFFFFF;
  border-radius: 50%;
}

.pulse-indicator::after {
  content: '';
  position: absolute;
  top: -3px;
  left: -3px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.6);
  animation: pulse-ring 1.8s infinite;
}

@keyframes pulse-ring {
  0% { transform: scale(0.6); opacity: 1; }
  100% { transform: scale(1.9); opacity: 0; }
}

/* ===================================================
   HEADER & NAVBAR (Sáng ở Light Mode, Tối ở Dark Mode)
=================================================== */
.cz-header {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--bg-header);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--bg-header-border);
  transition: all var(--transition-normal);
}

.cz-header.scrolled {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

html[data-theme="dark"] .cz-header.scrolled {
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.45);
}

.cz-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
}

.cz-brand-wrapper {
  display: flex;
  align-items: center;
  gap: 12px;
}

.cz-brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.cz-brand-logo img {
  height: 36px;
  width: auto;
}

/* Logo toggling between modes */
.logo-light {
  display: block;
}
.logo-dark {
  display: none;
}
html[data-theme="dark"] .logo-light {
  display: none;
}
html[data-theme="dark"] .logo-dark {
  display: block;
}

.cz-product-badge {
  display: none !important;
}

.cz-nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
}

.cz-nav-item a {
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  color: var(--nav-link-color);
  font-size: 0.9375rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.cz-nav-item a:hover {
  color: var(--cz-blue-primary);
  background: var(--cz-blue-soft);
}

.cz-nav-item.active a {
  color: var(--cz-blue-primary);
  background: var(--nav-link-active-bg);
  font-weight: 600;
}

.cz-header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Theme Toggle Button */
.cz-theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--bg-card-border);
  background: var(--bg-card);
  color: var(--text-body);
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: all var(--transition-normal);
}

.cz-theme-toggle:hover {
  color: var(--cz-blue-primary);
  border-color: var(--cz-blue-primary);
  background: var(--cz-blue-soft);
}

.theme-icon-sun {
  display: none;
}
.theme-icon-moon {
  display: block;
}
html[data-theme="dark"] .theme-icon-sun {
  display: block;
}
html[data-theme="dark"] .theme-icon-moon {
  display: none;
}

.cz-mobile-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--bg-card-border);
  color: var(--text-heading);
  padding: 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

/* Mobile Nav Drawer */
.cz-mobile-menu {
  position: fixed;
  top: 74px;
  left: 0;
  right: 0;
  background: var(--bg-card);
  border-bottom: 1px solid var(--bg-card-border);
  padding: 20px;
  display: none;
  flex-direction: column;
  gap: 8px;
  box-shadow: var(--shadow-xl);
  z-index: 99;
}

.cz-mobile-menu.open {
  display: flex;
}

.cz-mobile-menu a {
  padding: 12px 16px;
  color: var(--text-body);
  font-size: 1rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
}

.cz-mobile-menu a:hover,
.cz-mobile-menu a.active {
  background: var(--cz-blue-soft);
  color: var(--cz-blue-primary);
}

/* ===================================================
   HERO SECTIONS (Sáng, Tươi Mới ở Light Mode)
=================================================== */
/* ===================================================
   HERO SUBPAGE (FULL BACKGROUND THEO CHUẨN BG-TINH-NANG.PNG)
=================================================== */
.hero-subpage {
  position: relative;
  background-color: var(--bg-surface);
  background-image: 
    linear-gradient(var(--bg-subpage-overlay), var(--bg-subpage-overlay)),
    url('../../images/v2/images/bg-sub-banner.webp');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  padding: 72px 0 92px;
  border-bottom: 1px solid var(--bg-header-border);
  text-align: center;
  overflow: hidden;
}

.hero-subpage .cz-container {
  position: relative;
  z-index: 2;
  max-width: 860px;
  margin: 0 auto;
}

.hero-subpage .hero-title {
  font-size: 2.85rem;
  margin-bottom: 16px;
}

.hero-subpage .hero-desc {
  margin: 0 auto;
  max-width: 680px;
}

/* ===================================================
   HERO TECH (MAIN BANNER: DIGITAL + DATA CENTER + DASHBOARD)
=================================================== */
.hero-tech {
  position: relative;
  background: var(--bg-hero);
  color: var(--text-body);
  padding: 84px 0 104px;
  overflow: hidden;
  border-bottom: 1px solid var(--bg-header-border);
  transition: background var(--transition-normal);
}

/* ===================================================
   HERO SIDE ARTWORKS (PHÂN BỔ CÂN ĐỐI 2 BÊN TRÊN DESKTOP - BANNER CHÍNH)
   Độ đậm nhạt tinh tế (~0.68 - 0.72) không che lấn nội dung
=================================================== */
.hero-side-art {
  position: absolute;
  pointer-events: none;
  z-index: 1;
  transition: opacity var(--transition-normal);
}

/* Cụm Data Center phía bên phải */
.hero-side-art-right {
  top: 50%;
  transform: translateY(-50%);
  right: clamp(10px, 2vw, 45px);
  width: clamp(280px, 19vw, 360px);
  height: auto;
  opacity: 0.70;
}

/* Cụm Digital Hologram phía bên trái */
.hero-side-art-left {
  top: 15px;
  left: clamp(10px, 1.8vw, 35px);
  width: clamp(260px, 18vw, 330px);
  height: auto;
  opacity: 0.65;
}

html[data-theme="dark"] .hero-side-art-right {
  opacity: 0.78;
  filter: drop-shadow(0 0 20px rgba(0, 161, 255, 0.12));
}

html[data-theme="dark"] .hero-side-art-left {
  opacity: 0.74;
  filter: drop-shadow(0 0 16px rgba(0, 161, 255, 0.10));
}

/* Responsive banner chính */
@media (max-width: 1560px) {
  .hero-side-art-right {
    right: 10px;
    width: 250px;
    opacity: 0.60;
  }
  .hero-side-art-left {
    left: 10px;
    width: 230px;
    opacity: 0.58;
  }
}

@media (max-width: 1320px) {
  .hero-side-art {
    display: none;
  }
}

/* ===================================================
   HERO SUBPAGE ARTWORKS (2 SECTION CÂN ĐỐI 2 BÊN TRÊN DESKTOP THEO CHỦ ĐỀ)
=================================================== */
.hero-subpage-art {
  position: absolute;
  pointer-events: none;
  z-index: 1;
  transition: opacity var(--transition-normal);
}

.hero-subpage-art-left {
  top: 50%;
  transform: translateY(-50%);
  left: clamp(10px, 2.8vw, 55px);
  width: clamp(260px, 19vw, 360px);
  height: auto;
  opacity: 0.68;
}

.hero-subpage-art-right {
  top: 50%;
  transform: translateY(-50%);
  right: clamp(10px, 2.8vw, 55px);
  width: clamp(260px, 19vw, 360px);
  height: auto;
  opacity: 0.68;
}

html[data-theme="dark"] .hero-subpage-art-left,
html[data-theme="dark"] .hero-subpage-art-right {
  opacity: 0.76;
}

@media (max-width: 1400px) {
  .hero-subpage-art-left,
  .hero-subpage-art-right {
    width: clamp(210px, 17vw, 280px);
    opacity: 0.55;
  }
}

@media (max-width: 1100px) {
  .hero-subpage-art-left,
  .hero-subpage-art-right {
    display: none;
  }
}

/* ===================================================
   MOBILE BANNER ARTWORK (DÀNH CHO PHIÊN BẢN DI ĐỘNG)
   Hiển thị watermark công nghệ mờ nhẹ góc phải trên mobile
=================================================== */
.hero-art-mobile {
  display: none;
  position: absolute;
  pointer-events: none;
  z-index: 1;
}

@media (max-width: 768px) {
  .hero-art-mobile {
    display: block;
    top: 15px;
    right: 8px;
    width: 175px;
    height: auto;
    opacity: 0.52;
    filter: drop-shadow(0 2px 8px rgba(0, 161, 255, 0.2));
  }

  html[data-theme="dark"] .hero-art-mobile {
    opacity: 0.62;
  }
}

@media (max-width: 480px) {
  .cz-header-actions .btn-phone {
    display: none;
  }
  .cz-brand-wrapper .cz-product-badge {
    display: none;
  }
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 56px;
  position: relative;
  z-index: 2;
}

.hero-title {
  font-size: 3.25rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 22px;
  color: var(--text-title);
}

.hero-desc {
  font-size: 1.15rem;
  line-height: 1.7;
  color: var(--text-light-sub);
  max-width: 600px;
  margin-bottom: 34px;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 34px;
}

.hero-checklist {
  display: flex;
  flex-direction: column;
  gap: 12px;
  list-style: none;
}

.hero-checklist li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  color: var(--text-body);
}

.hero-check-icon {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(0, 161, 255, 0.12);
  color: var(--cz-blue-primary);
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

/* ===================================================
   HERO PLATFORM SHOWCASE (ENTERPRISE SAAS VISUAL)
   Thiết kế giao diện SaaS thực tế, khác biệt, đẳng cấp
=================================================== */
.hero-showcase-container {
  position: relative;
  z-index: 3;
}

.hero-app-window {
  background: var(--showcase-bg);
  border: 1px solid var(--showcase-border);
  border-radius: var(--radius-xl);
  box-shadow: 0 25px 60px -15px rgba(15, 35, 56, 0.16), 0 0 35px rgba(0, 161, 255, 0.08);
  overflow: hidden;
  transition: all var(--transition-normal);
}

.app-window-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  background: var(--showcase-header);
  border-bottom: 1px solid var(--showcase-header-border);
}

.app-window-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.app-control-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #CBD5E1;
}

.app-window-address {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--showcase-sub);
  background: var(--bg-surface);
  padding: 4px 14px;
  border-radius: var(--radius-full);
  border: 1px solid var(--showcase-header-border);
}

.app-window-status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  color: #10B981;
  background: rgba(16, 185, 129, 0.1);
  padding: 4px 10px;
  border-radius: var(--radius-full);
}

.status-live-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #10B981;
  box-shadow: 0 0 8px #10B981;
}

.app-window-content {
  padding: 24px;
  background: var(--showcase-bg);
}

/* Model 3 Tầng Trực Quan Thực Tế */
.showcase-tiers {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.tier-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 18px;
  border-radius: var(--radius-md);
  border: 1px solid var(--showcase-header-border);
  background: var(--showcase-panel);
  transition: all var(--transition-normal);
}

.tier-item:hover {
  border-color: var(--cz-blue-primary);
  transform: translateX(4px);
}

.tier-icon-wrap {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: grid;
  place-items: center;
  flex-shrink: 0;
  font-weight: 700;
  font-size: 1.1rem;
}

.tier-icon-company {
  background: rgba(0, 161, 255, 0.12);
  color: var(--cz-blue-primary);
}

.tier-icon-agency {
  background: rgba(0, 210, 180, 0.12);
  color: var(--cz-mint);
}

.tier-icon-customer {
  background: rgba(255, 176, 32, 0.12);
  color: var(--cz-amber);
}

.tier-info {
  flex-grow: 1;
}

.tier-header-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 4px;
}

.tier-name {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--showcase-text);
}

.tier-badge {
  font-size: 0.6875rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

.badge-tier-1 {
  background: rgba(0, 161, 255, 0.12);
  color: var(--cz-blue-primary);
}

.badge-tier-2 {
  background: rgba(0, 210, 180, 0.12);
  color: var(--cz-mint);
}

.badge-tier-3 {
  background: rgba(255, 176, 32, 0.12);
  color: var(--cz-amber);
}

.tier-desc {
  font-size: 0.8125rem;
  color: var(--showcase-sub);
  line-height: 1.45;
}

/* Thẻ Thông Số Phụ Nổi Bật (Floating Cards) */
.showcase-floating-kpi {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--showcase-header-border);
}

.kpi-mini-card {
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  border: 1px solid var(--showcase-header-border);
}

.kpi-label {
  font-size: 0.75rem;
  color: var(--showcase-sub);
  margin-bottom: 4px;
}

.kpi-value {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--showcase-text);
  display: flex;
  align-items: center;
  gap: 6px;
}

.kpi-tag-good {
  font-size: 0.6875rem;
  color: #10B981;
  font-weight: 600;
}

.flow-status-tag {
  color: var(--cz-mint);
  font-size: 0.7rem;
  background: var(--cz-mint-soft);
  padding: 2px 7px;
  border-radius: var(--radius-full);
}

/* ===================================================
   SECTIONS & LAYOUTS
=================================================== */
.section {
  padding: 92px 0;
  position: relative;
  background-color: var(--bg-body);
}

.section-alt {
  background-color: var(--bg-surface);
}

.section-dark {
  background-color: var(--bg-card);
  color: var(--text-body);
}

/* ===================================================
   FULL BACKGROUND BANNER SECTIONS (HÌNH TRÀN VIỀN CÔNG NGHỆ)
   Đặc trị cảm giác nhàm chán của các section nền xám / trắng
=================================================== */
.section-banner-full {
  position: relative;
  background-color: var(--bg-surface);
  background-image: 
    radial-gradient(ellipse 80% 50% at 50% 0%, rgba(0, 102, 255, 0.08) 0%, transparent 75%),
    linear-gradient(var(--bg-subpage-overlay), var(--bg-subpage-overlay)),
    url('../../images/v2/images/bg-sub-banner.webp');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  border-top: 1px solid rgba(0, 102, 255, 0.14);
  border-bottom: 1px solid rgba(0, 102, 255, 0.14);
  overflow: hidden;
}

.section-banner-full::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--cz-blue-primary), #00D2B4, transparent);
  opacity: 0.8;
}

/* Biến thể CTA Banner Full Viền */
.section-banner-cta {
  position: relative;
  background-color: var(--bg-surface);
  background-image: 
    radial-gradient(ellipse 90% 60% at 50% 0%, rgba(0, 161, 255, 0.16) 0%, transparent 80%),
    linear-gradient(var(--bg-subpage-overlay), var(--bg-subpage-overlay)),
    url('../../images/v2/images/bg-sub-banner.webp');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  border-top: 1px solid rgba(0, 161, 255, 0.14);
  border-bottom: 1px solid rgba(0, 161, 255, 0.14);
  padding: 100px 0;
  text-align: center;
  overflow: hidden;
}

.section-banner-cta::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, #00A1FF, #00D2B4, transparent);
  opacity: 0.9;
}

/* Thẻ kính mờ cao cấp cho các box đặt trên nền full background banner */
.section-banner-full .calc-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(0, 161, 255, 0.22);
  box-shadow: 0 16px 40px rgba(0, 161, 255, 0.08), var(--shadow-xl);
}

.section-banner-full .journey-step,
.section-banner-full .journey-step-compact {
  background: var(--bg-card);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(0, 161, 255, 0.18);
}

.section-banner-full .step-guide-card {
  background: var(--bg-card);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(0, 102, 255, 0.18);
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 56px;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  color: var(--text-title);
}

.section-subtitle {
  font-size: 1.0625rem;
  color: var(--text-light-sub);
  line-height: 1.7;
}

/* ===================================================
   3-TIER ARCHITECTURE CARDS
=================================================== */
.arch-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 64px;
  position: relative;
  margin-top: 48px;
  max-width: 1160px;
  margin-left: auto;
  margin-right: auto;
}

.arch-card {
  background: var(--bg-card);
  border: 1px solid rgba(0, 161, 255, 0.18);
  border-top: 4px solid rgba(0, 161, 255, 0.45);
  border-radius: var(--radius-xl);
  padding: 32px 24px 28px;
  box-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.05);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  position: relative;
}

.arch-card:hover {
  transform: translateY(-6px);
  border-color: var(--cz-blue-primary);
  box-shadow: 0 16px 36px -6px rgba(0, 161, 255, 0.16);
}



.arch-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.arch-icon-box {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: var(--cz-blue-soft);
  display: grid;
  place-items: center;
  color: var(--cz-blue-primary);
  font-size: 1.5rem;
  border: 1px solid rgba(0, 161, 255, 0.2);
  transition: all var(--transition-normal);
}

.arch-card:hover .arch-icon-box {
  background: var(--cz-blue-primary);
  color: #FFFFFF;
  transform: scale(1.05);
}

.arch-step-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--cz-blue-primary);
  background: var(--cz-blue-soft);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(0, 161, 255, 0.18);
  letter-spacing: 0.04em;
}



.arch-card-title {
  font-size: 1.375rem;
  font-weight: 800;
  margin-bottom: 6px;
  color: var(--text-title);
  letter-spacing: -0.01em;
}

.arch-card-badge {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--cz-blue-primary);
  background: var(--cz-blue-soft);
  padding: 3px 10px;
  border-radius: var(--radius-full);
  margin-bottom: 16px;
  width: fit-content;
  border: 1px solid rgba(0, 161, 255, 0.15);
}

.arch-card-desc {
  font-size: 0.9375rem;
  color: var(--text-body);
  line-height: 1.65;
  margin-bottom: 24px;
  flex-grow: 1;
}

.arch-feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  border-top: 1px solid rgba(15, 23, 42, 0.08);
  padding-top: 20px;
}

html[data-theme="dark"] .arch-feature-list {
  border-top-color: rgba(255, 255, 255, 0.08);
}

.arch-feature-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.875rem;
  color: var(--text-body);
}

.arch-check {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--cz-blue-soft);
  color: var(--cz-blue-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border: 1px solid rgba(0, 161, 255, 0.2);
}

/* Mũi tên kết nối luồng giữa các tầng trên Desktop: Căn chính xác giữa khoảng hở 64px, khoảng cách thoáng đãng */
.arch-card:not(:last-child)::after {
  content: '';
  position: absolute;
  left: calc(100% + 32px);
  top: 50%;
  transform: translate(-50%, -50%);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: #FFFFFF;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%2300A1FF' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12h14'%3E%3C/path%3E%3Cpath d='m12 5 7 7-7 7'%3E%3C/path%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  border: 2px solid var(--cz-blue-primary);
  box-shadow: 0 4px 14px rgba(0, 161, 255, 0.22);
  z-index: 5;
  transition: all var(--transition-normal);
}

.arch-card:hover:not(:last-child)::after {
  transform: translate(-50%, -50%) scale(1.1);
  box-shadow: 0 6px 18px rgba(0, 161, 255, 0.38);
}

html[data-theme="dark"] .arch-card:not(:last-child)::after {
  background-color: var(--bg-card);
  border-color: #38BDF8;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%2338BDF8' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12h14'%3E%3C/path%3E%3Cpath d='m12 5 7 7-7 7'%3E%3C/path%3E%3C/svg%3E");
}

/* ===================================================
   HÀNH TRÌNH ĐƠN HÀNG (COMPACT FLOW CĂN GIỮA MŨI TÊN)
   Thiết kế nhỏ gọn, mũi tên căn giữa chính xác ngang & dọc
=================================================== */
.journey-flow-wrapper {
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  gap: 10px;
  position: relative;
  margin-top: 40px;
  width: 100%;
}

.journey-step-compact {
  flex: 1 1 0;
  min-width: 0;
  background: var(--bg-card);
  border: 1px solid rgba(0, 161, 255, 0.18);
  border-radius: var(--radius-lg);
  padding: 22px 14px 18px;
  box-shadow: 0 3px 12px rgba(15, 23, 42, 0.04);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.journey-step-compact:hover {
  transform: translateY(-4px);
  border-color: var(--cz-blue-primary);
  box-shadow: 0 10px 24px -2px rgba(0, 161, 255, 0.2);
}

.journey-step-compact .journey-step-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: var(--cz-blue-soft);
  color: var(--cz-blue-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 10px;
  border: 1px solid rgba(0, 161, 255, 0.18);
  transition: all var(--transition-normal);
}

.journey-step-compact:hover .journey-step-icon {
  background: var(--cz-blue-primary);
  color: #FFFFFF;
  transform: scale(1.06);
}

.journey-step-compact .journey-step-badge {
  font-family: var(--font-body);
  font-size: 0.6875rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  background: var(--cz-blue-soft);
  color: var(--cz-blue-primary);
  border: 1px solid rgba(0, 161, 255, 0.22);
  display: inline-block;
  margin-bottom: 8px;
  width: fit-content;
}

.journey-step-compact .journey-step-title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 6px;
  line-height: 1.35;
}

.journey-step-compact .journey-step-text {
  font-size: 0.8125rem;
  color: var(--text-body);
  line-height: 1.48;
  margin-top: 0;
}

/* Node mũi tên ở giữa 2 card: Căn giữa tuyệt đối ngang & dọc */
.journey-arrow-node {
  flex: 0 0 32px;
  width: 32px;
  height: 32px;
  align-self: center;
  border-radius: 50%;
  background-color: #FFFFFF;
  border: 2px solid var(--cz-blue-primary);
  color: var(--cz-blue-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(0, 161, 255, 0.22);
  z-index: 3;
  transition: all var(--transition-normal);
}

.journey-arrow-node:hover {
  transform: scale(1.15);
  box-shadow: 0 6px 16px rgba(0, 161, 255, 0.4);
}

html[data-theme="dark"] .journey-arrow-node {
  background-color: var(--bg-card);
  border-color: #38BDF8;
  color: #38BDF8;
  box-shadow: 0 0 14px rgba(56, 189, 248, 0.35);
}

/* Giữ tương thích cho lớp .journey-timeline cũ */
.journey-timeline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  position: relative;
  margin-top: 40px;
}

/* ===================================================
   3 BƯỚC ĐẠI LÝ (STEP GUIDE GRID CÓ MŨI TÊN CHỈ BƯỚC)
=================================================== */
.step-guide-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  position: relative;
  margin-top: 48px;
}

.step-guide-card {
  background: var(--bg-card);
  border: 1px solid rgba(0, 102, 255, 0.16);
  border-radius: var(--radius-xl);
  padding: 38px 30px;
  box-shadow: var(--shadow-md);
  position: relative;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.step-guide-card:hover {
  transform: translateY(-5px);
  border-color: var(--cz-blue-primary);
  box-shadow: 0 16px 36px -4px rgba(0, 102, 255, 0.18);
}

.step-guide-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: var(--cz-blue-soft);
  color: var(--cz-blue-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  border: 1px solid rgba(0, 102, 255, 0.18);
  transition: all var(--transition-normal);
}

.step-guide-card:hover .step-guide-icon {
  background: var(--cz-blue-primary);
  color: #FFFFFF;
  transform: scale(1.08);
}

.step-big-number {
  font-family: var(--font-mono);
  font-size: 3rem;
  font-weight: 800;
  color: rgba(0, 102, 255, 0.12);
  position: absolute;
  top: 24px;
  right: 28px;
  line-height: 1;
  pointer-events: none;
}

.step-guide-badge {
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: var(--cz-blue-soft);
  color: var(--cz-blue-primary);
  border: 1px solid rgba(0, 102, 255, 0.22);
  display: inline-block;
  margin-bottom: 12px;
  width: fit-content;
}

.step-guide-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 12px;
}

.step-guide-desc {
  font-size: 0.9375rem;
  color: var(--text-body);
  line-height: 1.65;
}

/* Mũi tên chỉ bước cho 3 bước đại lý */
.step-guide-card:not(:last-child)::after {
  content: '';
  position: absolute;
  right: -24px;
  top: 50%;
  transform: translateY(-50%);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: #FFFFFF;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%230066FF' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12h14'%3E%3C/path%3E%3Cpath d='m12 5 7 7-7 7'%3E%3C/path%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  border: 2px solid var(--cz-blue-primary);
  box-shadow: 0 4px 14px rgba(0, 102, 255, 0.25);
  z-index: 5;
  transition: all var(--transition-normal);
}

.step-guide-card:hover:not(:last-child)::after {
  transform: translateY(-50%) scale(1.15);
  box-shadow: 0 6px 20px rgba(0, 102, 255, 0.4);
}

html[data-theme="dark"] .step-guide-card:not(:last-child)::after {
  background-color: var(--bg-card);
  border-color: #38BDF8;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2338BDF8' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12h14'%3E%3C/path%3E%3Cpath d='m12 5 7 7-7 7'%3E%3C/svg%3E");
  box-shadow: 0 0 16px rgba(56, 189, 248, 0.35);
}

/* ===================================================
   4 BƯỚC TÍCH HỢP API (API STEP ROW CÓ MŨI TÊN CHỈ BƯỚC)
=================================================== */
.api-step-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
  margin-top: 44px;
}

.api-step-box {
  background: var(--bg-card);
  border: 1px solid rgba(0, 102, 255, 0.16);
  border-radius: var(--radius-lg);
  padding: 30px 22px;
  box-shadow: var(--shadow-md);
  position: relative;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.api-step-box:hover {
  transform: translateY(-5px);
  border-color: var(--cz-blue-primary);
  box-shadow: 0 14px 34px -4px rgba(0, 102, 255, 0.18);
}

.api-step-box.is-highlight {
  border-color: var(--cz-blue-primary);
  box-shadow: 0 8px 24px rgba(0, 102, 255, 0.16);
}

.api-step-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--cz-blue-soft);
  color: var(--cz-blue-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  border: 1px solid rgba(0, 102, 255, 0.18);
  transition: all var(--transition-normal);
}

.api-step-box:hover .api-step-icon {
  background: var(--cz-blue-primary);
  color: #FFFFFF;
  transform: scale(1.08);
}

.api-step-icon.icon-highlight {
  background: var(--cz-blue-primary);
  color: #FFFFFF;
}

.api-step-badge {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--cz-blue-primary);
  background: var(--cz-blue-soft);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  display: inline-block;
  margin-bottom: 12px;
  border: 1px solid rgba(0, 102, 255, 0.22);
  width: fit-content;
}

.api-step-badge.badge-highlight {
  background: var(--cz-blue-primary);
  color: #FFFFFF !important;
  border-color: var(--cz-blue-primary);
}

.api-step-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 8px;
}

.api-step-desc {
  font-size: 0.875rem;
  color: var(--text-body);
  line-height: 1.6;
}

/* Mũi tên chỉ bước cho 4 bước API */
.api-step-box:not(:last-child)::after {
  content: '';
  position: absolute;
  right: -20px;
  top: 50%;
  transform: translateY(-50%);
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background-color: #FFFFFF;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%230066FF' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12h14'%3E%3C/path%3E%3Cpath d='m12 5 7 7-7 7'%3E%3C/path%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  border: 2px solid var(--cz-blue-primary);
  box-shadow: 0 3px 12px rgba(0, 102, 255, 0.25);
  z-index: 5;
  transition: all var(--transition-normal);
}

.api-step-box:hover:not(:last-child)::after {
  transform: translateY(-50%) scale(1.15);
  box-shadow: 0 6px 18px rgba(0, 102, 255, 0.4);
}

html[data-theme="dark"] .api-step-box:not(:last-child)::after {
  background-color: var(--bg-card);
  border-color: #38BDF8;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%2338BDF8' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12h14'%3E%3C/path%3E%3Cpath d='m12 5 7 7-7 7'%3E%3C/svg%3E");
  box-shadow: 0 0 14px rgba(56, 189, 248, 0.35);
}

/* ===================================================
   TWO WAYS AGENCY COMPARISON
=================================================== */
.compare-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.compare-box {
  background: var(--bg-card);
  border: 1px solid var(--bg-card-border);
  border-radius: var(--radius-xl);
  padding: 40px;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.compare-box.highlight {
  border-color: var(--cz-blue-primary);
  position: relative;
}

.compare-popular-tag {
  position: absolute;
  top: -14px;
  right: 32px;
  background: linear-gradient(135deg, var(--cz-blue-primary), var(--cz-blue-dark));
  color: #FFFFFF !important;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 5px 14px;
  border-radius: var(--radius-full);
}

.compare-icon-wrap {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-lg);
  background: var(--cz-blue-soft);
  color: var(--cz-blue-primary);
  display: grid;
  place-items: center;
  font-size: 1.75rem;
  margin-bottom: 24px;
}

.compare-title {
  font-size: 1.625rem;
  font-weight: 800;
  color: var(--text-heading);
  margin-bottom: 10px;
}

.compare-desc {
  font-size: 1rem;
  color: var(--text-light-sub);
  line-height: 1.65;
  margin-bottom: 26px;
}

.compare-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 32px;
  flex-grow: 1;
}

.compare-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.9375rem;
  color: var(--text-body);
}

.compare-list li i {
  color: var(--cz-blue-primary);
  font-size: 1.1rem;
  margin-top: 2px;
  flex-shrink: 0;
}

/* ===================================================
   FEATURE BENTO GRID (P1-P7)
=================================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--bg-card-border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: var(--bg-card-hover-border);
  box-shadow: var(--shadow-md);
}

.feature-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.feature-icon-square {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: var(--cz-blue-soft);
  color: var(--cz-blue-primary);
  display: grid;
  place-items: center;
  font-size: 1.35rem;
}

.feature-code-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
  background: var(--bg-surface);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 12px;
}

.feature-text {
  font-size: 0.9375rem;
  color: var(--text-body);
  line-height: 1.65;
  margin-bottom: 20px;
}

.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
}

.feature-tag-item {
  font-size: 0.75rem;
  padding: 4px 10px;
  background: var(--bg-surface);
  color: var(--text-body);
  border-radius: var(--radius-sm);
}

/* ===================================================
   INTERACTIVE PRICING CALCULATOR
=================================================== */
.calc-card {
  background: var(--bg-card);
  border: 1px solid var(--bg-card-border);
  border-radius: var(--radius-xl);
  padding: 44px;
  box-shadow: var(--shadow-lg);
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 48px;
  align-items: center;
}

.calc-control-group {
  margin-bottom: 28px;
}

.calc-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-heading);
  margin-bottom: 12px;
}

.calc-slider {
  width: 100%;
  height: 8px;
  border-radius: 4px;
  background: #CBD5E1;
  outline: none;
  -webkit-appearance: none;
}

.calc-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--cz-blue-primary);
  cursor: pointer;
  box-shadow: 0 0 10px rgba(0, 102, 255, 0.5);
  border: 2px solid #FFF;
}

.calc-result-box {
  background: var(--mockup-bg);
  color: var(--mockup-text);
  padding: 36px 30px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--mockup-border);
  box-shadow: var(--shadow-md);
  text-align: center;
}

.calc-result-label {
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--cz-blue-primary);
  font-family: var(--font-mono);
  margin-bottom: 8px;
}

.calc-result-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--text-title);
  margin-bottom: 16px;
  line-height: 1.1;
}

html[data-theme="dark"] .calc-result-number {
  color: #E2E8F0;
}

.calc-result-meta {
  font-size: 0.8125rem;
  color: var(--mockup-sub);
  line-height: 1.6;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 16px;
}

/* ===================================================
   CODE BOX / TERMINAL (API SANDBOX)
=================================================== */
.code-window {
  background: #09131F;
  border: 1px solid rgba(0, 102, 255, 0.2);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
}

.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 18px;
  background: #0D1B2A;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.code-tabs {
  display: flex;
  gap: 8px;
}

.code-tab-btn {
  background: transparent;
  border: none;
  color: #94A3B8;
  font-family: var(--font-mono);
  font-size: 0.775rem;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.code-tab-btn.active {
  background: rgba(0, 102, 255, 0.2);
  color: #38BDF8;
}

.btn-copy-code {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: #CBD5E1;
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn-copy-code:hover {
  background: rgba(0, 102, 255, 0.25);
  color: #FFF;
}

.code-content {
  padding: 22px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.7;
  color: #CBD5E1;
  overflow-x: auto;
}

.token-method { color: #38BDF8; font-weight: 700; }
.token-url { color: var(--cz-mint); }
.token-key { color: #93C5FD; }
.token-str { color: #FDE047; }
.token-num { color: #F472B6; }
.token-comment { color: #64748B; font-style: italic; }

/* ===================================================
   FAQ ACCORDION
=================================================== */
.faq-grid {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--bg-card-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.faq-item:hover {
  border-color: rgba(0, 102, 255, 0.3);
}

.faq-item.active {
  border-color: var(--cz-blue-primary);
  box-shadow: var(--shadow-sm);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  background: transparent;
  border: none;
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--text-heading);
  text-align: left;
  cursor: pointer;
  gap: 16px;
}

.faq-toggle-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--cz-blue-soft);
  color: var(--cz-blue-primary);
  display: grid;
  place-items: center;
  font-size: 1.1rem;
  flex-shrink: 0;
  transition: transform var(--transition-normal);
}

.faq-item.active .faq-toggle-icon {
  transform: rotate(45deg);
  background: var(--cz-blue-primary);
  color: #FFFFFF !important;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 24px;
  color: var(--text-body);
  font-size: 0.9375rem;
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 0 24px 22px;
}

/* ===================================================
   CONTACT FORM & INFO
=================================================== */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 56px;
  align-items: start;
}

.contact-info-card {
  background: var(--mockup-bg);
  color: var(--mockup-text);
  padding: 44px;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--mockup-border);
}

.contact-channel-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 26px;
}

.channel-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--cz-blue-soft);
  color: var(--cz-blue-primary);
  display: grid;
  place-items: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.form-card {
  background: var(--bg-card);
  padding: 44px;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--bg-card-border);
}

.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-heading);
  margin-bottom: 8px;
}

.form-label .required {
  color: var(--cz-rose);
}

.form-control {
  width: 100%;
  padding: 13px 16px;
  font-size: 0.9375rem;
  color: var(--text-heading);
  background: var(--bg-surface);
  border: 1px solid var(--bg-card-border);
  border-radius: var(--radius-md);
  outline: none;
  transition: all var(--transition-fast);
}

.form-control:focus {
  background: var(--bg-card);
  border-color: var(--cz-blue-primary);
  box-shadow: 0 0 0 3px rgba(0, 161, 255, 0.15);
}

.form-checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.875rem;
  color: var(--text-body);
  line-height: 1.5;
  cursor: pointer;
}

/* ===================================================
   FLOATING BUTTONS (Nút màu xanh, chữ trắng)
=================================================== */
.cz-float-actions {
  display: none !important;
}

.cz-float-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 700;
  color: #FFFFFF !important;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
  transition: all var(--transition-normal);
  text-decoration: none;
}

.cz-float-btn:hover {
  transform: translateY(-3px) scale(1.03);
}

.cz-float-phone {
  background: linear-gradient(135deg, #00A1FF 0%, #0086D6 100%);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.cz-float-zalo {
  background: #0068FF;
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.cz-float-chat {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 90;
}

.cz-chat-trigger {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--cz-blue-primary), var(--cz-blue-dark));
  color: #FFFFFF !important;
  display: grid;
  place-items: center;
  font-size: 1.5rem;
  box-shadow: 0 8px 24px rgba(0, 161, 255, 0.4);
  border: 2px solid #FFF;
  cursor: pointer;
  transition: all var(--transition-normal);
}

.cz-chat-trigger:hover {
  transform: scale(1.08);
}

/* ===================================================
   FOOTER
=================================================== */
.cz-footer {
  background: var(--footer-bg);
  color: var(--footer-text);
  padding: 72px 0 32px;
  border-top: 1px solid var(--footer-border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 48px;
  margin-bottom: 56px;
}

.footer-brand p {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--footer-text);
  margin-top: 16px;
}

.footer-col-title {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--footer-heading);
  margin-bottom: 22px;
  position: relative;
}

.footer-col-title::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 28px;
  height: 2px;
  background: var(--cz-blue-primary);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  font-size: 0.9375rem;
  color: var(--footer-text);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--cz-blue-primary);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid var(--footer-border);
  padding-top: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.8125rem;
  color: var(--footer-text);
}

/* ===================================================
   RESPONSIVE QUERIES
=================================================== */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .arch-grid { grid-template-columns: 1fr; gap: 36px; }
  .arch-card:not(:last-child)::after {
    right: 50%;
    top: auto;
    bottom: -22px;
    transform: translateX(50%) rotate(90deg);
  }
  .journey-flow-wrapper {
    flex-direction: column;
    gap: 12px;
  }
  .journey-step-compact {
    width: 100%;
    max-width: 480px;
    min-height: auto;
  }
  .journey-arrow-node {
    transform: rotate(90deg);
    margin: 4px 0;
  }
  .journey-timeline { grid-template-columns: 1fr; gap: 36px; }
  .journey-step:not(:last-child)::after {
    right: 50%;
    top: auto;
    bottom: -22px;
    transform: translateX(50%) rotate(90deg);
  }
  .journey-step:hover:not(:last-child)::after {
    transform: translateX(50%) rotate(90deg) scale(1.15);
  }
  .step-guide-grid { grid-template-columns: 1fr; gap: 40px; }
  .step-guide-card:not(:last-child)::after {
    right: 50%;
    top: auto;
    bottom: -24px;
    transform: translateX(50%) rotate(90deg);
  }
  .step-guide-card:hover:not(:last-child)::after {
    transform: translateX(50%) rotate(90deg) scale(1.15);
  }
  .api-step-row { grid-template-columns: 1fr; gap: 36px; }
  .api-step-box:not(:last-child)::after {
    right: 50%;
    top: auto;
    bottom: -22px;
    transform: translateX(50%) rotate(90deg);
  }
  .api-step-box:hover:not(:last-child)::after {
    transform: translateX(50%) rotate(90deg) scale(1.15);
  }
  .compare-container { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .calc-card { grid-template-columns: 1fr; gap: 32px; }
  .contact-layout { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 36px; }
  .cz-nav-links { display: none; }
  .cz-mobile-toggle { display: block; }
}

@media (max-width: 640px) {
  .hero-title { font-size: 2.25rem; }
  .features-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-cta-group { flex-direction: column; align-items: stretch; }
  .cz-float-actions { bottom: 16px; left: 16px; }
  .cz-float-btn span { display: none; }
  .cz-float-btn { padding: 12px; border-radius: 50%; }
}