/* ============================================
   糖心工坊 - 主样式文件
   CSS/ID前缀：qk-
   设计风格：比利时古典工坊（可可棕+丝带金）
   Mobile-First 响应式设计
   ============================================ */

/* --- Google Fonts 本地化替代（使用系统字体栈） --- */
@font-face {
  font-family: 'QK-Serif';
  src: local('Playfair Display'), local('Georgia'), local('Times New Roman');
  font-display: swap;
}
@font-face {
  font-family: 'QK-Sans';
  src: local('Lato'), local('Helvetica Neue'), local('Arial');
  font-display: swap;
}

/* --- CSS变量 --- */
:root {
  --qk-cocoa: #5C4033;
  --qk-cocoa-dark: #3E2A1E;
  --qk-cocoa-light: #7A5C4F;
  --qk-gold: #FFD700;
  --qk-gold-dark: #DAA520;
  --qk-gold-light: #FFE44D;
  --qk-cream: #F5F5DC;
  --qk-cream-dark: #E8E8C8;
  --qk-white: #FFFDF7;
  --qk-text: #3A2518;
  --qk-text-light: #6B5344;
  --qk-border: #D4C4B0;
  --qk-shadow: rgba(92, 64, 51, 0.15);
  --qk-font-serif: 'Playfair Display', 'QK-Serif', Georgia, 'Times New Roman', serif;
  --qk-font-sans: 'Lato', 'QK-Sans', 'Helvetica Neue', Arial, sans-serif;
  --qk-max-width: 1440px;
  --qk-content-width: 1200px;
  --qk-transition: all 0.3s ease;
}

/* --- 全局重置 --- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--qk-font-sans);
  color: var(--qk-text);
  background-color: var(--qk-white);
  line-height: 1.8;
  overflow-x: hidden;
}

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

a {
  color: var(--qk-cocoa);
  text-decoration: none;
  transition: var(--qk-transition);
}

a:hover {
  color: var(--qk-gold-dark);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--qk-font-serif);
  color: var(--qk-cocoa-dark);
  line-height: 1.4;
  font-weight: 700;
}

/* --- 装饰性元素 --- */
.qk-ornament {
  display: block;
  width: 120px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--qk-gold), transparent);
  margin: 1.5rem auto;
}

.qk-ornament-left {
  margin: 1.5rem 0;
}

/* --- 容器 --- */
.qk-container {
  width: 100%;
  max-width: var(--qk-content-width);
  margin: 0 auto;
  padding: 0 1rem;
}

/* ============================================
   导航栏
   ============================================ */
#qk-header {
  background-color: var(--qk-cocoa-dark);
  border-bottom: 2px solid var(--qk-gold);
  z-index: 100;
  position: relative;
}

.qk-nav-wrapper {
  max-width: var(--qk-max-width);
  margin: 0 auto;
  padding: 0 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 70px;
}

.qk-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.qk-logo img {
  height: 50px;
  width: auto;
}

.qk-logo-text {
  font-family: var(--qk-font-serif);
  color: var(--qk-gold);
  font-size: 1.3rem;
  font-weight: 700;
  white-space: nowrap;
}

.qk-logo-domain {
  display: block;
  font-size: 0.7rem;
  color: var(--qk-cream);
  font-family: var(--qk-font-sans);
  font-weight: 400;
  opacity: 0.8;
}

/* 主导航 */
#qk-main-nav {
  display: none;
}

#qk-main-nav.qk-nav-active {
  display: flex;
  flex-direction: column;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background-color: var(--qk-cocoa-dark);
  border-top: 1px solid var(--qk-gold);
  padding: 1rem 0;
  z-index: 99;
}

.qk-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.qk-nav-item {
  position: relative;
}

.qk-nav-link {
  display: block;
  padding: 0.75rem 1.5rem;
  color: var(--qk-cream);
  font-size: 0.95rem;
  font-family: var(--qk-font-sans);
  font-weight: 400;
  letter-spacing: 0.05em;
  transition: var(--qk-transition);
  border-bottom: 2px solid transparent;
}

.qk-nav-link:hover,
.qk-nav-link.qk-active {
  color: var(--qk-gold);
  border-bottom-color: var(--qk-gold);
}

/* 汉堡菜单 */
#qk-hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.qk-hamburger-line {
  width: 28px;
  height: 2px;
  background-color: var(--qk-gold);
  transition: var(--qk-transition);
  border-radius: 2px;
}

#qk-hamburger.qk-open .qk-hamburger-line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
#qk-hamburger.qk-open .qk-hamburger-line:nth-child(2) {
  opacity: 0;
}
#qk-hamburger.qk-open .qk-hamburger-line:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* 导航右侧 */
.qk-nav-right {
  display: none;
}

/* 搜索框 */
.qk-search-box {
  display: flex;
  align-items: center;
  background: rgba(255,255,255,0.1);
  border: 1px solid var(--qk-gold);
  border-radius: 20px;
  padding: 0.3rem 0.8rem;
  gap: 0.5rem;
}

.qk-search-input {
  background: transparent;
  border: none;
  color: var(--qk-cream);
  font-size: 0.85rem;
  width: 140px;
  outline: none;
}

.qk-search-input::placeholder {
  color: rgba(245,245,220,0.5);
}

.qk-search-btn {
  background: none;
  border: none;
  color: var(--qk-gold);
  cursor: pointer;
  font-size: 1rem;
}

.qk-contact-btn {
  display: inline-block;
  padding: 0.4rem 1.2rem;
  background: var(--qk-gold);
  color: var(--qk-cocoa-dark);
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  transition: var(--qk-transition);
  white-space: nowrap;
}

.qk-contact-btn:hover {
  background: var(--qk-gold-light);
  color: var(--qk-cocoa-dark);
  transform: translateY(-1px);
}

/* ============================================
   Hero Banner
   ============================================ */
#qk-hero {
  position: relative;
  width: 100%;
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background-color: var(--qk-cocoa-dark);
}

.qk-hero-video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}

.qk-hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    to bottom,
    rgba(62, 42, 30, 0.65) 0%,
    rgba(62, 42, 30, 0.55) 50%,
    rgba(62, 42, 30, 0.75) 100%
  );
  z-index: 2;
}

.qk-hero-content {
  position: relative;
  z-index: 3;
  text-align: center;
  padding: 2rem 1rem;
  max-width: 800px;
}

.qk-hero-title {
  font-family: var(--qk-font-serif);
  font-size: 2rem;
  color: var(--qk-cream);
  margin-bottom: 1rem;
  text-shadow: 2px 2px 8px rgba(0,0,0,0.5);
  line-height: 1.3;
}

.qk-hero-subtitle {
  font-family: var(--qk-font-sans);
  font-size: 1rem;
  color: var(--qk-cream);
  margin-bottom: 2rem;
  opacity: 0.9;
  text-shadow: 1px 1px 4px rgba(0,0,0,0.4);
}

.qk-hero-btn {
  display: inline-block;
  padding: 0.8rem 2.5rem;
  background: var(--qk-gold);
  color: var(--qk-cocoa-dark);
  font-family: var(--qk-font-serif);
  font-size: 1rem;
  font-weight: 700;
  border-radius: 4px;
  border: 2px solid var(--qk-gold);
  transition: var(--qk-transition);
  letter-spacing: 0.1em;
}

.qk-hero-btn:hover {
  background: transparent;
  color: var(--qk-gold);
}

/* ============================================
   通用Section样式
   ============================================ */
.qk-section {
  padding: 3rem 0;
}

.qk-section-alt {
  background-color: var(--qk-cream);
}

.qk-section-dark {
  background-color: var(--qk-cocoa-dark);
  color: var(--qk-cream);
}

.qk-section-dark h2,
.qk-section-dark h3 {
  color: var(--qk-gold);
}

.qk-section-title {
  font-size: 1.6rem;
  text-align: center;
  margin-bottom: 0.5rem;
}

.qk-section-desc {
  text-align: center;
  color: var(--qk-text-light);
  max-width: 700px;
  margin: 0 auto 2rem;
  font-size: 0.95rem;
}

/* ============================================
   大师甄选卡片
   ============================================ */
.qk-card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.qk-product-card {
  background: var(--qk-white);
  border: 1px solid var(--qk-border);
  border-radius: 8px;
  overflow: hidden;
  transition: var(--qk-transition);
  box-shadow: 0 2px 8px var(--qk-shadow);
}

.qk-product-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px var(--qk-shadow);
}

.qk-card-image {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
}

.qk-card-body {
  padding: 1.2rem;
}

.qk-card-title {
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
  color: var(--qk-cocoa-dark);
}

.qk-card-text {
  font-size: 0.9rem;
  color: var(--qk-text-light);
  line-height: 1.7;
}

.qk-card-link {
  display: inline-block;
  margin-top: 0.8rem;
  color: var(--qk-gold-dark);
  font-weight: 600;
  font-size: 0.9rem;
}

.qk-card-link:hover {
  color: var(--qk-cocoa);
}

/* ============================================
   明星单品
   ============================================ */
.qk-star-product {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: center;
}

.qk-star-image {
  border-radius: 8px;
  box-shadow: 0 8px 32px var(--qk-shadow);
  max-width: 400px;
  margin: 0 auto;
}

.qk-star-info {
  text-align: center;
}

.qk-star-name {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.qk-star-desc {
  font-size: 0.95rem;
  color: var(--qk-text-light);
  margin-bottom: 1.5rem;
  line-height: 1.8;
}

.qk-star-price {
  font-family: var(--qk-font-serif);
  font-size: 1.8rem;
  color: var(--qk-gold-dark);
  margin-bottom: 1rem;
}

/* ============================================
   视频模块
   ============================================ */
.qk-video-section {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: start;
}

.qk-video-wrapper {
  position: relative;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 16px var(--qk-shadow);
  border: 2px solid var(--qk-gold);
}

.qk-video-player {
  width: 100%;
  display: block;
  aspect-ratio: 16/9;
  background: #000;
}

.qk-process-steps {
  list-style: none;
}

.qk-step-item {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
  align-items: flex-start;
}

.qk-step-number {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  background: var(--qk-gold);
  color: var(--qk-cocoa-dark);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--qk-font-serif);
  font-weight: 700;
  font-size: 1.1rem;
}

.qk-step-content h3 {
  font-size: 1.05rem;
  margin-bottom: 0.3rem;
}

.qk-step-content p {
  font-size: 0.9rem;
  color: var(--qk-text-light);
}

/* ============================================
   客户评价
   ============================================ */
.qk-reviews-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.qk-review-card {
  background: var(--qk-white);
  border: 1px solid var(--qk-border);
  border-radius: 8px;
  padding: 1.5rem;
  position: relative;
}

.qk-review-card::before {
  content: '\201C';
  font-family: var(--qk-font-serif);
  font-size: 4rem;
  color: var(--qk-gold);
  opacity: 0.3;
  position: absolute;
  top: 0.5rem;
  left: 1rem;
  line-height: 1;
}

.qk-review-text {
  font-style: italic;
  font-size: 0.95rem;
  color: var(--qk-text-light);
  margin-bottom: 1rem;
  padding-top: 1rem;
  line-height: 1.7;
}

.qk-review-author {
  font-weight: 600;
  color: var(--qk-cocoa);
  font-size: 0.9rem;
}

.qk-review-stars {
  color: var(--qk-gold);
  font-size: 0.9rem;
  margin-top: 0.3rem;
}

/* ============================================
   CTA区域
   ============================================ */
.qk-cta-section {
  text-align: center;
  padding: 4rem 1rem;
  background: linear-gradient(135deg, var(--qk-cocoa-dark) 0%, var(--qk-cocoa) 100%);
  color: var(--qk-cream);
}

.qk-cta-title {
  font-size: 1.8rem;
  color: var(--qk-gold);
  margin-bottom: 1rem;
}

.qk-cta-text {
  font-size: 1rem;
  margin-bottom: 2rem;
  opacity: 0.9;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.qk-cta-btn {
  display: inline-block;
  padding: 1rem 3rem;
  background: var(--qk-gold);
  color: var(--qk-cocoa-dark);
  font-family: var(--qk-font-serif);
  font-size: 1.1rem;
  font-weight: 700;
  border-radius: 4px;
  border: 2px solid var(--qk-gold);
  transition: var(--qk-transition);
  letter-spacing: 0.1em;
}

.qk-cta-btn:hover {
  background: transparent;
  color: var(--qk-gold);
}

/* ============================================
   当季限定
   ============================================ */
.qk-seasonal-banner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: center;
}

.qk-seasonal-image {
  border-radius: 8px;
  box-shadow: 0 4px 16px var(--qk-shadow);
}

.qk-seasonal-badge {
  display: inline-block;
  background: var(--qk-gold);
  color: var(--qk-cocoa-dark);
  padding: 0.3rem 1rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 700;
  margin-bottom: 1rem;
  letter-spacing: 0.1em;
}

/* ============================================
   巧克力文化科普
   ============================================ */
.qk-culture-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.qk-culture-card {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  background: var(--qk-white);
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--qk-border);
}

.qk-culture-image {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
}

.qk-culture-body {
  padding: 1rem;
}

/* ============================================
   面包屑
   ============================================ */
.qk-breadcrumb {
  padding: 1rem 0;
  font-size: 0.85rem;
  color: var(--qk-text-light);
}

.qk-breadcrumb a {
  color: var(--qk-cocoa-light);
}

.qk-breadcrumb a:hover {
  color: var(--qk-gold-dark);
}

.qk-breadcrumb-sep {
  margin: 0 0.5rem;
  color: var(--qk-border);
}

/* ============================================
   内页通用
   ============================================ */
.qk-page-hero {
  background: linear-gradient(135deg, var(--qk-cocoa-dark), var(--qk-cocoa));
  padding: 3rem 0;
  text-align: center;
  color: var(--qk-cream);
}

.qk-page-hero h1 {
  font-size: 1.8rem;
  color: var(--qk-gold);
  margin-bottom: 0.5rem;
}

.qk-page-hero p {
  font-size: 1rem;
  opacity: 0.9;
}

.qk-article-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

.qk-article-content p {
  margin-bottom: 1.5rem;
  text-indent: 2em;
  line-height: 2;
  font-size: 0.95rem;
}

.qk-article-content h2 {
  font-size: 1.4rem;
  margin: 2rem 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--qk-gold);
  display: inline-block;
}

.qk-article-content h3 {
  font-size: 1.15rem;
  margin: 1.5rem 0 0.8rem;
  color: var(--qk-cocoa);
}

.qk-article-image {
  margin: 2rem 0;
  border-radius: 8px;
  box-shadow: 0 4px 16px var(--qk-shadow);
}

.qk-blockquote {
  border-left: 4px solid var(--qk-gold);
  padding: 1rem 1.5rem;
  margin: 2rem 0;
  background: var(--qk-cream);
  border-radius: 0 8px 8px 0;
  font-style: italic;
  color: var(--qk-text-light);
}

/* ============================================
   私人订制工坊
   ============================================ */
#qk-custom-form {
  max-width: 900px;
  margin: 0 auto;
}

.qk-form-steps {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.qk-step-indicator {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--qk-cream);
  border-radius: 20px;
  font-size: 0.85rem;
  color: var(--qk-text-light);
  transition: var(--qk-transition);
}

.qk-step-indicator.qk-step-active {
  background: var(--qk-gold);
  color: var(--qk-cocoa-dark);
  font-weight: 600;
}

.qk-step-indicator.qk-step-done {
  background: var(--qk-cocoa);
  color: var(--qk-cream);
}

.qk-form-panel {
  display: none;
  padding: 2rem;
  background: var(--qk-white);
  border: 1px solid var(--qk-border);
  border-radius: 8px;
  box-shadow: 0 2px 8px var(--qk-shadow);
}

.qk-form-panel.qk-panel-active {
  display: block;
}

.qk-form-label {
  display: block;
  font-family: var(--qk-font-serif);
  font-size: 1.1rem;
  color: var(--qk-cocoa-dark);
  margin-bottom: 1rem;
}

.qk-radio-group,
.qk-checkbox-group {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.8rem;
}

.qk-radio-option,
.qk-checkbox-option {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 0.8rem 1rem;
  border: 2px solid var(--qk-border);
  border-radius: 8px;
  cursor: pointer;
  transition: var(--qk-transition);
}

.qk-radio-option:hover,
.qk-checkbox-option:hover {
  border-color: var(--qk-gold);
  background: rgba(255, 215, 0, 0.05);
}

.qk-radio-option input:checked + span,
.qk-checkbox-option input:checked + span {
  color: var(--qk-gold-dark);
  font-weight: 600;
}

.qk-radio-option input,
.qk-checkbox-option input {
  accent-color: var(--qk-gold-dark);
  width: 18px;
  height: 18px;
}

.qk-text-input {
  width: 100%;
  padding: 0.8rem 1rem;
  border: 2px solid var(--qk-border);
  border-radius: 8px;
  font-size: 1rem;
  font-family: var(--qk-font-sans);
  color: var(--qk-text);
  transition: var(--qk-transition);
  background: var(--qk-white);
}

.qk-text-input:focus {
  outline: none;
  border-color: var(--qk-gold);
  box-shadow: 0 0 0 3px rgba(255, 215, 0, 0.2);
}

.qk-char-count {
  text-align: right;
  font-size: 0.8rem;
  color: var(--qk-text-light);
  margin-top: 0.3rem;
}

.qk-form-nav {
  display: flex;
  justify-content: space-between;
  margin-top: 1.5rem;
  gap: 1rem;
}

.qk-btn-prev,
.qk-btn-next,
.qk-btn-submit {
  padding: 0.7rem 2rem;
  border: 2px solid var(--qk-gold);
  border-radius: 4px;
  font-family: var(--qk-font-serif);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--qk-transition);
}

.qk-btn-prev {
  background: transparent;
  color: var(--qk-cocoa);
}

.qk-btn-prev:hover {
  background: var(--qk-cream);
}

.qk-btn-next,
.qk-btn-submit {
  background: var(--qk-gold);
  color: var(--qk-cocoa-dark);
}

.qk-btn-next:hover,
.qk-btn-submit:hover {
  background: var(--qk-gold-light);
}

/* 预览区域 */
.qk-preview-area {
  text-align: center;
  padding: 2rem;
  background: var(--qk-cream);
  border-radius: 8px;
  margin-top: 2rem;
}

.qk-preview-box {
  width: 200px;
  height: 200px;
  margin: 1rem auto;
  border: 3px solid var(--qk-gold);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--qk-white);
  position: relative;
  overflow: hidden;
}

.qk-preview-shape {
  width: 120px;
  height: 120px;
  background: var(--qk-cocoa);
  transition: var(--qk-transition);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--qk-gold);
  font-family: var(--qk-font-serif);
  font-size: 0.85rem;
}

.qk-shape-heart {
  clip-path: polygon(50% 100%, 0% 35%, 15% 0%, 50% 20%, 85% 0%, 100% 35%);
}

.qk-shape-square {
  border-radius: 4px;
}

.qk-shape-circle {
  border-radius: 50%;
}

.qk-preview-details {
  margin-top: 1rem;
  font-size: 0.9rem;
  color: var(--qk-text-light);
}

/* 模态框 */
.qk-modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.6);
  z-index: 1000;
  align-items: center;
  justify-content: center;
}

.qk-modal-overlay.qk-modal-active {
  display: flex;
}

.qk-modal-content {
  background: var(--qk-white);
  padding: 2.5rem;
  border-radius: 12px;
  text-align: center;
  max-width: 450px;
  width: 90%;
  box-shadow: 0 16px 48px rgba(0,0,0,0.3);
  border: 2px solid var(--qk-gold);
}

.qk-modal-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.qk-modal-title {
  font-size: 1.3rem;
  color: var(--qk-cocoa-dark);
  margin-bottom: 0.8rem;
}

.qk-modal-text {
  color: var(--qk-text-light);
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
}

.qk-modal-close {
  padding: 0.6rem 2rem;
  background: var(--qk-gold);
  color: var(--qk-cocoa-dark);
  border: none;
  border-radius: 4px;
  font-family: var(--qk-font-serif);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--qk-transition);
}

.qk-modal-close:hover {
  background: var(--qk-gold-light);
}

/* ============================================
   APP下载页
   ============================================ */
.qk-app-showcase {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: center;
}

.qk-app-mockup {
  max-width: 300px;
  margin: 0 auto;
  border-radius: 24px;
  box-shadow: 0 16px 48px var(--qk-shadow);
}

.qk-app-buttons {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 1.5rem;
}

.qk-app-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.8rem;
  padding: 1rem 2rem;
  background: linear-gradient(135deg, var(--qk-gold-dark), var(--qk-gold));
  color: var(--qk-cocoa-dark);
  border-radius: 50px;
  font-family: var(--qk-font-serif);
  font-size: 1rem;
  font-weight: 700;
  transition: var(--qk-transition);
  box-shadow: 0 4px 16px rgba(218, 165, 32, 0.3);
  border: 2px solid var(--qk-gold-dark);
}

.qk-app-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(218, 165, 32, 0.4);
  color: var(--qk-cocoa-dark);
}

.qk-app-icon {
  font-size: 1.5rem;
}

/* ============================================
   页脚
   ============================================ */
#qk-footer {
  background-color: var(--qk-cocoa-dark);
  color: var(--qk-cream);
  padding: 3rem 0 0;
}

.qk-footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}

.qk-footer-col h3 {
  font-size: 1.1rem;
  color: var(--qk-gold);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(255, 215, 0, 0.3);
}

.qk-footer-links {
  list-style: none;
}

.qk-footer-link {
  display: block;
  padding: 0.3rem 0;
  color: rgba(245, 245, 220, 0.8);
  font-size: 0.9rem;
  transition: var(--qk-transition);
}

.qk-footer-link:hover {
  color: var(--qk-gold);
  padding-left: 0.5rem;
}

.qk-footer-text {
  font-size: 0.9rem;
  line-height: 1.7;
  color: rgba(245, 245, 220, 0.7);
}

/* 荣誉认证区 */
.qk-honors {
  border-top: 1px solid rgba(255, 215, 0, 0.2);
  padding: 2rem 0;
}

.qk-honors-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.qk-honor-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: rgba(245, 245, 220, 0.8);
}

.qk-honor-icon {
  font-size: 1.2rem;
  flex-shrink: 0;
}

/* 底部版权 */
.qk-copyright {
  border-top: 1px solid rgba(255, 215, 0, 0.2);
  padding: 1.5rem 0;
  text-align: center;
  font-size: 0.8rem;
  color: rgba(245, 245, 220, 0.6);
}

.qk-license-number {
  display: block;
  margin-top: 0.5rem;
  color: var(--qk-gold);
  font-weight: 600;
  font-size: 0.85rem;
}

/* ============================================
   FAQ样式
   ============================================ */
.qk-faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.qk-faq-item {
  border-bottom: 1px solid var(--qk-border);
  padding: 1.2rem 0;
}

.qk-faq-question {
  font-family: var(--qk-font-serif);
  font-size: 1.05rem;
  color: var(--qk-cocoa-dark);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.qk-faq-answer {
  margin-top: 0.8rem;
  font-size: 0.9rem;
  color: var(--qk-text-light);
  line-height: 1.8;
  display: none;
}

.qk-faq-item.qk-faq-open .qk-faq-answer {
  display: block;
}

/* ============================================
   响应式断点
   ============================================ */

/* 768px - 平板 */
@media (min-width: 768px) {
  .qk-hero-title {
    font-size: 2.8rem;
  }
  .qk-hero-subtitle {
    font-size: 1.15rem;
  }
  .qk-section {
    padding: 4rem 0;
  }
  .qk-section-title {
    font-size: 1.8rem;
  }
  .qk-card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .qk-star-product {
    grid-template-columns: 1fr 1fr;
  }
  .qk-star-info {
    text-align: left;
  }
  .qk-video-section {
    grid-template-columns: 1.2fr 1fr;
  }
  .qk-reviews-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .qk-seasonal-banner {
    grid-template-columns: 1fr 1fr;
  }
  .qk-culture-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .qk-footer-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .qk-honors-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  .qk-radio-group,
  .qk-checkbox-group {
    grid-template-columns: repeat(3, 1fr);
  }
  .qk-app-showcase {
    grid-template-columns: 1fr 1fr;
  }
  .qk-app-buttons {
    flex-direction: row;
  }
  .qk-page-hero h1 {
    font-size: 2.2rem;
  }
}

/* 1024px - 小桌面 */
@media (min-width: 1024px) {
  #qk-main-nav {
    display: flex;
    align-items: center;
  }
  #qk-main-nav.qk-nav-active {
    position: static;
    flex-direction: row;
    padding: 0;
    border-top: none;
  }
  .qk-nav-list {
    flex-direction: row;
    gap: 0;
  }
  .qk-nav-link {
    padding: 1.5rem 0.8rem;
    font-size: 0.9rem;
  }
  #qk-hamburger {
    display: none;
  }
  .qk-nav-right {
    display: flex;
    align-items: center;
    gap: 1rem;
  }
  .qk-hero-title {
    font-size: 3.2rem;
  }
  #qk-hero {
    min-height: 80vh;
  }
  .qk-card-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .qk-reviews-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .qk-culture-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .qk-container {
    padding: 0 2rem;
  }
}

/* 1440px - 大桌面 */
@media (min-width: 1440px) {
  .qk-hero-title {
    font-size: 3.6rem;
  }
  .qk-section {
    padding: 5rem 0;
  }
  .qk-section-title {
    font-size: 2rem;
  }
  .qk-card-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* 320px - 小手机 */
@media (max-width: 320px) {
  html {
    font-size: 14px;
  }
  .qk-hero-title {
    font-size: 1.6rem;
  }
  .qk-nav-link {
    padding: 0.6rem 1rem;
    font-size: 0.85rem;
  }
}

/* ============================================
   动画
   ============================================ */
@keyframes qk-fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.qk-animate {
  animation: qk-fadeInUp 0.6s ease forwards;
}

/* 加载动画 */
@keyframes qk-spin {
  to { transform: rotate(360deg); }
}

.qk-loading {
  display: inline-block;
  width: 40px;
  height: 40px;
  border: 3px solid var(--qk-border);
  border-top-color: var(--qk-gold);
  border-radius: 50%;
  animation: qk-spin 0.8s linear infinite;
}

/* ============================================
   工具类
   ============================================ */
.qk-text-center { text-align: center; }
.qk-text-gold { color: var(--qk-gold); }
.qk-text-cocoa { color: var(--qk-cocoa); }
.qk-mt-1 { margin-top: 0.5rem; }
.qk-mt-2 { margin-top: 1rem; }
.qk-mt-3 { margin-top: 1.5rem; }
.qk-mb-1 { margin-bottom: 0.5rem; }
.qk-mb-2 { margin-bottom: 1rem; }
.qk-mb-3 { margin-bottom: 1.5rem; }
.qk-hidden { display: none; }
.qk-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}