/*
Theme Name: Queen Bella
Theme URI: https://www.queenbella.com
Author: Romeway Industrial Co., Ltd.
Author URI: https://www.romewaychina.com
Description: 草蓓香氛 WordPress 主题 — 天然植物香氛除味产品站，支持中文/英文/日语/韩语四国语言。粉色紫色渐变配色，四叶草 Logo，6大香型产品展示。
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: queen-bella
Tags: e-commerce, one-column, two-columns, custom-colors, custom-menu, custom-logo, editor-style, featured-images, footer-widgets, full-width-template, microformats, rtl-language-support, threaded-comments, translation-ready
*/

/* ============================================
   CSS Variables — Design System
   ============================================ */
:root {
  --qb-primary: #EC4899;
  --qb-primary-dark: #831843;
  --qb-primary-light: #F9A8D4;
  --qb-secondary: #8B5CF6;
  --qb-text-dark: #1F2937;
  --qb-text-body: #374151;
  --qb-text-light: #9CA3AF;
  --qb-bg-white: #FFFFFF;
  --qb-bg-light: #FDF2F8;
  --qb-border: #FBCFE8;
  --qb-shadow: 0 4px 24px rgba(236,72,153,0.12);
  --qb-shadow-lg: 0 12px 48px rgba(236,72,153,0.18);
  --qb-radius: 16px;
  --qb-container: 1200px;
  --qb-transition: all 0.3s ease;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  color: var(--qb-text-body);
  background: var(--qb-bg-white);
  line-height: 1.6;
  overflow-x: hidden;
  font-size: 16px;
}

a { text-decoration: none; color: inherit; transition: var(--qb-transition); }
a:hover { color: var(--qb-primary); }

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

ul, ol { list-style: none; }

button { cursor: pointer; border: none; outline: none; font-family: inherit; }

/* ============================================
   Layout
   ============================================ */
.qb-container {
  max-width: var(--qb-container);
  margin: 0 auto;
  padding: 0 24px;
}

.qb-section { padding: 80px 0; }
.qb-section-alt { background: var(--qb-bg-light); }

/* ============================================
   Topbar
   ============================================ */
.qb-topbar {
  background: linear-gradient(135deg, var(--qb-primary-dark), var(--qb-primary));
  color: #fff;
  padding: 8px 0;
  font-size: 13px;
}

.qb-topbar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.qb-topbar a { color: #FBCFE8; margin-left: 16px; transition: color 0.2s; }
.qb-topbar a:hover { color: #fff; }

/* Language Switcher */
.qb-lang-switcher { display: flex; gap: 6px; align-items: center; }

.qb-lang-btn {
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.3);
  color: #fff;
  padding: 3px 12px;
  border-radius: 20px;
  cursor: pointer;
  font-size: 12px;
  transition: all 0.2s;
  font-family: inherit;
}

.qb-lang-btn:hover, .qb-lang-btn.active {
  background: rgba(255,255,255,0.3);
  color: #fff;
}

/* ============================================
   Header
   ============================================ */
.qb-header {
  background: var(--qb-bg-white);
  box-shadow: 0 2px 12px rgba(236,72,153,0.08);
  position: sticky;
  top: 0;
  z-index: 100;
}

.qb-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
}

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

.qb-logo-icon {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--qb-primary), var(--qb-secondary));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.qb-logo-text { font-weight: 800; font-size: 22px; color: var(--qb-primary-dark); letter-spacing: -0.5px; }
.qb-logo-sub { font-size: 10px; color: var(--qb-text-light); display: block; margin-top: -3px; }

/* Navigation */
.qb-nav { display: flex; align-items: center; gap: 4px; }

.qb-nav a {
  padding: 8px 16px;
  border-radius: 8px;
  font-weight: 500;
  font-size: 15px;
  color: var(--qb-text-body);
  transition: var(--qb-transition);
}

.qb-nav a:hover, .qb-nav .current-menu-item a,
.qb-nav a.active { background: var(--qb-bg-light); color: var(--qb-primary); }

.qb-header-cta {
  background: linear-gradient(135deg, var(--qb-primary), var(--qb-secondary));
  color: #fff !important;
  padding: 10px 24px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 14px;
  box-shadow: 0 4px 14px rgba(236,72,153,0.35);
  display: inline-block;
  white-space: nowrap;
}

.qb-header-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(236,72,153,0.45);
  color: #fff !important;
}

/* ============================================
   Hero
   ============================================ */
.qb-hero {
  background: linear-gradient(135deg, #831843 0%, #BE185D 50%, #EC4899 100%);
  color: #fff;
  padding: 80px 0 100px;
  position: relative;
  overflow: hidden;
}

.qb-hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(236,72,153,0.4), transparent 70%);
  border-radius: 50%;
}

.qb-hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(139,92,246,0.2), transparent 70%);
  border-radius: 50%;
}

.qb-hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.qb-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(236,72,153,0.3);
  border: 1px solid rgba(249,168,212,0.4);
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 13px;
  margin-bottom: 20px;
}

.qb-hero h1 { font-size: 48px; font-weight: 800; line-height: 1.15; margin-bottom: 20px; }
.qb-hero h1 span {
  background: linear-gradient(135deg, #FBCFE8, #8B5CF6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.qb-hero-desc { font-size: 18px; color: #FBCFE8; margin-bottom: 32px; line-height: 1.7; }

.qb-hero-btns { display: flex; gap: 16px; flex-wrap: wrap; }

/* Buttons */
.qb-btn-primary {
  background: linear-gradient(135deg, var(--qb-primary), var(--qb-secondary));
  color: #fff;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 15px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 4px 20px rgba(236,72,153,0.4);
  transition: var(--qb-transition);
  border: none;
  cursor: pointer;
}

.qb-btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(236,72,153,0.5);
  color: #fff;
}

.qb-btn-outline {
  border: 2px solid rgba(249,168,212,0.5);
  color: #FBCFE8;
  padding: 12px 30px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 15px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: var(--qb-transition);
  background: transparent;
}

.qb-btn-outline:hover {
  border-color: #F9A8D4;
  color: #fff;
  background: rgba(249,168,212,0.1);
}

/* Hero Stats */
.qb-hero-stats {
  display: flex;
  gap: 32px;
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,0.15);
  flex-wrap: wrap;
}

.qb-stat-item h3 { font-size: 28px; font-weight: 800; color: #F9A8D4; }
.qb-stat-item p { font-size: 13px; color: #FBCFE8; }

/* Hero Visual */
.qb-hero-visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.qb-hero-showcase {
  background: rgba(255,255,255,0.08);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 24px;
  padding: 40px;
  text-align: center;
  width: 100%;
}

.qb-showcase-icon { font-size: 80px; margin-bottom: 16px; }
.qb-showcase-title { font-size: 22px; font-weight: 700; color: #fff; margin-bottom: 8px; }
.qb-showcase-sub { font-size: 14px; color: #FBCFE8; margin-bottom: 20px; }

.qb-showcase-badges { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; }

.qb-badge-pill {
  background: rgba(236,72,153,0.4);
  border: 1px solid rgba(249,168,212,0.3);
  color: #FBCFE8;
  padding: 4px 12px;
  border-radius: 50px;
  font-size: 12px;
}

/* ============================================
   Section Headers
   ============================================ */
.qb-section-header { text-align: center; max-width: 640px; margin: 0 auto 56px; }

.qb-section-tag {
  display: inline-block;
  background: var(--qb-bg-light);
  color: var(--qb-primary);
  font-size: 13px;
  font-weight: 600;
  padding: 4px 16px;
  border-radius: 50px;
  margin-bottom: 12px;
  border: 1px solid var(--qb-border);
}

.qb-section-header h2 { font-size: 36px; font-weight: 800; color: var(--qb-text-dark); margin-bottom: 14px; line-height: 1.2; }
.qb-section-header p { font-size: 16px; color: var(--qb-text-light); line-height: 1.7; }

/* ============================================
   Features Grid
   ============================================ */
.qb-features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

.qb-feature-card {
  background: var(--qb-bg-white);
  border-radius: var(--qb-radius);
  padding: 28px;
  border: 1px solid var(--qb-border);
  box-shadow: var(--qb-shadow);
  transition: var(--qb-transition);
}

.qb-feature-card:hover { transform: translateY(-4px); box-shadow: var(--qb-shadow-lg); }

.qb-feature-icon { font-size: 40px; margin-bottom: 14px; }
.qb-feature-card h3 { font-size: 17px; font-weight: 700; color: var(--qb-text-dark); margin-bottom: 8px; }
.qb-feature-card p { font-size: 14px; color: var(--qb-text-light); line-height: 1.6; }

/* ============================================
   Products Grid
   ============================================ */
.qb-products-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

.qb-product-card {
  background: var(--qb-bg-white);
  border-radius: var(--qb-radius);
  padding: 28px 20px;
  border: 1px solid var(--qb-border);
  box-shadow: var(--qb-shadow);
  transition: var(--qb-transition);
  text-align: center;
}

.qb-product-card:hover { transform: translateY(-6px); box-shadow: var(--qb-shadow-lg); }

.qb-product-card-icon {
  font-size: 48px;
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 16px;
  margin: 0 auto 16px;
}

.qb-product-card h3 { font-size: 16px; font-weight: 700; color: var(--qb-text-dark); margin-bottom: 6px; }
.qb-product-card p { font-size: 13px; color: var(--qb-text-light); margin-bottom: 16px; line-height: 1.5; }

.qb-product-card .qb-btn-primary { padding: 8px 20px; font-size: 13px; }

/* ============================================
   Apps Grid
   ============================================ */
.qb-apps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }

.qb-app-card {
  background: var(--qb-bg-white);
  border-radius: 12px;
  padding: 24px;
  border: 1px solid var(--qb-border);
  text-align: center;
  transition: var(--qb-transition);
}

.qb-app-card:hover { box-shadow: var(--qb-shadow); transform: translateY(-2px); }

.qb-app-card-icon { font-size: 36px; margin-bottom: 12px; }
.qb-app-card h3 { font-size: 15px; font-weight: 600; color: var(--qb-text-dark); margin-bottom: 4px; }
.qb-app-card p { font-size: 12px; color: var(--qb-text-light); }

/* ============================================
   Certifications
   ============================================ */
.qb-cert-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

.qb-cert-item {
  background: var(--qb-bg-white);
  border-radius: 12px;
  padding: 24px;
  border: 1px solid var(--qb-border);
  text-align: center;
}

.qb-cert-icon { font-size: 36px; margin-bottom: 10px; }
.qb-cert-item h4 { font-size: 14px; font-weight: 700; color: var(--qb-text-dark); margin-bottom: 4px; }
.qb-cert-item p { font-size: 12px; color: var(--qb-text-light); }

/* Stats Row */
.qb-stats-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

.qb-stat-box {
  background: var(--qb-bg-white);
  border-radius: var(--qb-radius);
  padding: 32px;
  border: 1px solid var(--qb-border);
  text-align: center;
  box-shadow: var(--qb-shadow);
}

.qb-stat-box h3 { font-size: 36px; font-weight: 800; color: var(--qb-primary); margin-bottom: 4px; }
.qb-stat-box p { font-size: 14px; color: var(--qb-text-light); }

/* ============================================
   CTA Section
   ============================================ */
.qb-cta-section {
  background: linear-gradient(135deg, #831843 0%, #BE185D 50%, #EC4899 100%);
  color: #fff;
  padding: 80px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.qb-cta-section h2 { font-size: 36px; font-weight: 800; margin-bottom: 14px; }
.qb-cta-section p { font-size: 18px; color: #FBCFE8; margin-bottom: 32px; }

.qb-cta-section .qb-btn-primary {
  background: #fff;
  color: var(--qb-primary-dark);
}

.qb-cta-section .qb-btn-primary:hover {
  background: var(--qb-bg-light);
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(0,0,0,0.2);
  color: var(--qb-primary-dark);
}

/* ============================================
   About Section
   ============================================ */
.qb-about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }

.qb-about-text h3 { font-size: 24px; font-weight: 700; color: var(--qb-text-dark); margin-bottom: 16px; }
.qb-about-text p { font-size: 15px; color: var(--qb-text-body); margin-bottom: 12px; line-height: 1.7; }

.qb-about-visual {
  background: linear-gradient(135deg, #831843, #EC4899);
  border-radius: 24px;
  padding: 60px 40px;
  text-align: center;
  color: #fff;
}

.qb-about-visual-icon { font-size: 80px; margin-bottom: 20px; }
.qb-about-visual h3 { font-size: 28px; font-weight: 700; margin-bottom: 10px; }
.qb-about-visual p { font-size: 16px; color: #FBCFE8; }

/* ============================================
   Contact Section
   ============================================ */
.qb-contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }

.qb-contact-card {
  background: var(--qb-bg-white);
  border-radius: var(--qb-radius);
  padding: 32px;
  border: 1px solid var(--qb-border);
  box-shadow: var(--qb-shadow);
}

.qb-contact-card h3 { font-size: 20px; font-weight: 700; color: var(--qb-text-dark); margin-bottom: 24px; }

.qb-contact-item { display: flex; align-items: flex-start; gap: 14px; margin-bottom: 20px; }

.qb-contact-icon {
  width: 40px;
  height: 40px;
  background: var(--qb-bg-light);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.qb-contact-label { font-size: 13px; color: var(--qb-text-light); margin-bottom: 2px; }
.qb-contact-value { font-size: 15px; font-weight: 600; color: var(--qb-text-dark); }

/* ============================================
   Contact Form
   ============================================ */
.qb-form-group { margin-bottom: 16px; }

.qb-form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--qb-text-dark);
  margin-bottom: 6px;
}

.qb-form-group input,
.qb-form-group textarea,
.qb-form-group select {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--qb-border);
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
  transition: border-color 0.2s;
  background: var(--qb-bg-white);
}

.qb-form-group input:focus,
.qb-form-group textarea:focus,
.qb-form-group select:focus {
  outline: none;
  border-color: var(--qb-primary);
}

.qb-form-group textarea { height: 100px; resize: vertical; }

.qb-form-submit {
  background: linear-gradient(135deg, var(--qb-primary), var(--qb-secondary));
  color: #fff;
  border: none;
  padding: 12px 32px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  width: 100%;
  transition: var(--qb-transition);
}

.qb-form-submit:hover {
  transform: translateY(-2px);
  box-shadow: var(--qb-shadow-lg);
}

/* ============================================
   Product Detail Page
   ============================================ */
.qb-product-hero {
  background: linear-gradient(135deg, #831843 0%, #BE185D 50%, #EC4899 100%);
  color: #fff;
  padding: 80px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.qb-product-hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(236,72,153,0.4), transparent 70%);
  border-radius: 50%;
}

.qb-product-hero-inner { position: relative; z-index: 1; }

.qb-product-hero-icon { font-size: 100px; margin-bottom: 16px; }
.qb-product-hero h1 { font-size: 42px; font-weight: 800; margin-bottom: 10px; }
.qb-product-hero p { font-size: 18px; color: #FBCFE8; }

/* Specs */
.qb-specs-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }

.qb-spec-item {
  background: var(--qb-bg-white);
  border-radius: 12px;
  padding: 20px;
  border: 1px solid var(--qb-border);
  text-align: center;
}

.qb-spec-label { font-size: 12px; color: var(--qb-text-light); margin-bottom: 4px; }
.qb-spec-value { font-size: 16px; font-weight: 700; color: var(--qb-text-dark); }

/* Fragrance Pyramid */
.qb-pyramid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 24px; }

.qb-pyramid-item {
  background: var(--qb-bg-light);
  border-radius: 12px;
  padding: 16px;
  text-align: center;
}

.qb-pyramid-tier { font-size: 12px; font-weight: 700; color: var(--qb-primary); text-transform: uppercase; margin-bottom: 6px; }
.qb-pyramid-note { font-size: 14px; color: var(--qb-text-body); }

/* Related Products */
.qb-related-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }

/* ============================================
   Footer
   ============================================ */
.qb-footer { background: var(--qb-text-dark); color: #FBCFE8; padding: 48px 0 24px; }

.qb-footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; margin-bottom: 32px; }

.qb-footer-brand .qb-logo-text { color: #FBCFE8; }
.qb-footer-brand p { font-size: 14px; color: #9CA3AF; margin-top: 8px; }

.qb-footer-col h4 { font-size: 15px; font-weight: 700; margin-bottom: 14px; color: #FBCFE8; }
.qb-footer-col a { display: block; font-size: 14px; color: #9CA3AF; margin-bottom: 8px; transition: color 0.2s; }
.qb-footer-col a:hover { color: #F9A8D4; }

.qb-footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  text-align: center;
  font-size: 13px;
  color: #6B7280;
}

/* ============================================
   Breadcrumb
   ============================================ */
.qb-breadcrumb {
  padding: 16px 0;
  font-size: 14px;
  color: var(--qb-text-light);
}

.qb-breadcrumb a { color: var(--qb-primary); }
.qb-breadcrumb a:hover { color: var(--qb-secondary); }
.qb-breadcrumb span { margin: 0 8px; }

/* ============================================
   Page Header
   ============================================ */
.qb-page-hero {
  background: linear-gradient(135deg, #831843 0%, #BE185D 50%, #EC4899 100%);
  color: #fff;
  padding: 60px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.qb-page-hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(236,72,153,0.4), transparent 70%);
  border-radius: 50%;
}

.qb-page-hero-inner { position: relative; z-index: 1; }
.qb-page-hero h1 { font-size: 40px; font-weight: 800; margin-bottom: 10px; }
.qb-page-hero p { font-size: 16px; color: #FBCFE8; }

/* ============================================
   Brand Page
   ============================================ */
.qb-brand-story { max-width: 800px; margin: 0 auto; }

.qb-brand-section { margin-bottom: 40px; }

.qb-brand-section h2 {
  font-size: 28px;
  font-weight: 800;
  color: var(--qb-text-dark);
  margin-bottom: 16px;
  text-align: center;
}

.qb-brand-section p { font-size: 16px; color: var(--qb-text-body); line-height: 1.8; margin-bottom: 12px; }

.qb-brand-values { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 32px; }

.qb-brand-value {
  background: var(--qb-bg-light);
  border-radius: var(--qb-radius);
  padding: 24px;
  text-align: center;
  border: 1px solid var(--qb-border);
}

.qb-brand-value-icon { font-size: 40px; margin-bottom: 12px; }
.qb-brand-value h3 { font-size: 16px; font-weight: 700; color: var(--qb-text-dark); margin-bottom: 8px; }
.qb-brand-value p { font-size: 14px; color: var(--qb-text-light); }

/* ============================================
   Archive Product (Product Listing)
   ============================================ */
.qb-product-filters {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.qb-filter-btn {
  padding: 8px 20px;
  border-radius: 50px;
  border: 1px solid var(--qb-border);
  background: var(--qb-bg-white);
  color: var(--qb-text-body);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--qb-transition);
  font-family: inherit;
}

.qb-filter-btn:hover, .qb-filter-btn.active {
  background: linear-gradient(135deg, var(--qb-primary), var(--qb-secondary));
  color: #fff;
  border-color: transparent;
}

/* ============================================
   WP Core Overrides
   ============================================ */
.alignleft { float: left; margin-right: 1.5em; }
.alignright { float: right; margin-left: 1.5em; }
.aligncenter { display: block; margin-left: auto; margin-right: auto; }
.screen-reader-text { clip: rect(1px,1px,1px,1px); position: absolute !important; }

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 900px) {
  .qb-hero-inner { grid-template-columns: 1fr; }
  .qb-hero-visual { display: none; }
  .qb-products-grid { grid-template-columns: 1fr 1fr; }
  .qb-features-grid { grid-template-columns: 1fr 1fr; }
  .qb-apps-grid { grid-template-columns: repeat(2, 1fr); }
  .qb-stats-row { grid-template-columns: repeat(2, 1fr); }
  .qb-cert-grid { grid-template-columns: repeat(2, 1fr); }
  .qb-about-grid { grid-template-columns: 1fr; }
  .qb-contact-grid { grid-template-columns: 1fr; }
  .qb-footer-grid { grid-template-columns: 1fr; }
  .qb-specs-grid { grid-template-columns: repeat(2, 1fr); }
  .qb-pyramid { grid-template-columns: 1fr; }
  .qb-related-grid { grid-template-columns: repeat(2, 1fr); }
  .qb-brand-values { grid-template-columns: 1fr; }
  .qb-section-header h2 { font-size: 28px; }
  .qb-hero h1 { font-size: 36px; }
}

@media (max-width: 600px) {
  .qb-hero h1 { font-size: 28px; }
  .qb-products-grid { grid-template-columns: 1fr; }
  .qb-features-grid { grid-template-columns: 1fr; }
  .qb-apps-grid { grid-template-columns: 1fr; }
  .qb-stats-row { grid-template-columns: 1fr; }
  .qb-cert-grid { grid-template-columns: repeat(2, 1fr); }
  .qb-section { padding: 60px 0; }
  .qb-section-header h2 { font-size: 24px; }
  .qb-cta-section h2 { font-size: 28px; }
  .qb-page-hero h1 { font-size: 30px; }
  .qb-nav { display: none; }
  .qb-topbar-inner { flex-wrap: wrap; gap: 4px; }
  .qb-hero-stats { gap: 16px; }
  .qb-stat-item h3 { font-size: 22px; }
}