/* 以下为 origin_index.html <style> 标签全部样式，顺序与原文件一致，保证响应式100%还原 */

* {
  box-sizing: border-box;
}

body {
  font-family: 'Helvetica Neue', Arial, sans-serif;
  background: linear-gradient(135deg, #e0f7fa 0%, #f7f7fb 100%);
  margin: 0;
  padding: 0;
  overflow-x: hidden;
}

.container {
  width: 100%;
  max-width: 100%;
  min-height: 100vh;
  background: #fff;
  border-radius: 0;
  box-shadow: none;
  padding: 0 0 48px 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  overflow-x: hidden;
}

.container>h1,
.container>.intro-text {
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  width: 100%;
  box-sizing: border-box;
}

.container:hover {
  box-shadow: none;
}

h1 {
  color: #58cc02;
  text-align: center;
  font-size: 2.6em;
  margin-top: 40px;
  margin-bottom: 12px;
  letter-spacing: 1px;
}

.intro-text {
  text-align: center;
  font-size: 1.25em;
  color: #444;
  margin-bottom: 36px;
  margin-top: 0;
}

.section {
  margin: 0 auto 44px auto;
  width: 100%;
  max-width: 700px;
  box-sizing: border-box;
}

.ad-popup,
.offline-tip,
.member-tip {
  background: #fffbe6;
  border: 1px solid #ffe58f;
  padding: 16px;
  border-radius: 10px;
  margin: 12px 0;
}

.ad-popup {
  display: none;
}

.heart {
  color: #e74c3c;
  font-size: 24px;
  filter: drop-shadow(0 1px 2px #b2ebf2);
}

.cta-btn {
  background: linear-gradient(90deg, #58cc02 60%, #46a302 100%);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 10px 24px;
  font-size: 16px;
  cursor: pointer;
  margin-top: 12px;
  margin-bottom: 4px;
  box-shadow: 0 2px 8px #e0f2f1;
  transition: background 0.2s, transform 0.1s, box-shadow 0.2s;
}

.cta-btn:hover,
.cta-btn:focus {
  background: linear-gradient(90deg, #46a302 60%, #58cc02 100%);
  transform: scale(1.06);
  box-shadow: 0 4px 16px #b2ebf2;
}

.cta-btn:active {
  transform: scale(0.96);
}

.btn-danger {
  background: linear-gradient(90deg, #e53935 60%, #d32f2f 100%) !important;
  color: #fff !important;
  box-shadow: 0 2px 8px #ffcdd2;
}

.btn-danger:hover,
.btn-danger:focus {
  background: linear-gradient(90deg, #d32f2f 60%, #e53935 100%) !important;
  box-shadow: 0 4px 16px #ffcdd2;
}

.btn-blue {
  background: linear-gradient(90deg, #1cb0f6 60%, #1976d2 100%) !important;
  color: #fff !important;
  box-shadow: 0 2px 8px #b3e5fc;
}

.btn-blue:hover,
.btn-blue:focus {
  background: linear-gradient(90deg, #1976d2 60%, #1cb0f6 100%) !important;
  box-shadow: 0 4px 16px #b3e5fc;
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 16px;
  border-radius: 10px;
  overflow: hidden;
}

.table-container {
  width: 100%;
  overflow-x: auto;
}

.compare-table th,
.compare-table td {
  border: 1px solid #eee;
  padding: 8px;
  text-align: center;
}

.compare-table th {
  background: #f0f9eb;
}

.highlight {
  color: #58cc02;
  font-weight: bold;
}

#duo-experience-box {
  background: linear-gradient(120deg, #e0f7fa 60%, #fff 100%);
  box-shadow: 0 6px 32px #b2ebf2;
  border-radius: 20px;
  transition: box-shadow 0.3s, background 0.3s;
  max-width: 700px;
  width: 100%;
  padding: 40px 40px 32px 40px;
  margin: 0 auto 44px auto;
  box-sizing: border-box;
  display: block;
}

#duo-experience-box:hover {
  box-shadow: 0 12px 48px #4dd0e1;
  background: linear-gradient(120deg, #b2ebf2 60%, #fff 100%);
}

#duoProgressBar {
  transition: width 0.4s cubic-bezier(.4, 2, .6, 1), background 0.3s;
  box-shadow: 0 2px 8px #b2ebf2;
}

#duo-answer-area,
#duo-word-bank {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 16px;
  margin-bottom: 8px;
}

#duo-answer-area button,
#duo-word-bank button {
  min-width: 56px;
  min-height: 44px;
  font-size: 1.15em;
  border-radius: 14px;
  border: 2px solid #e0e0e0;
  background: #fff;
  color: #222;
  margin: 0;
  box-shadow: none;
  transition: background 0.18s, color 0.18s, border 0.18s;
  outline: none;
  font-weight: 500;
}

#duo-word-bank button.selected {
  background: #e0e0e0;
  color: #222;
  border: 2px solid #e0e0e0;
}

#duo-word-bank button:disabled {
  background: #e0e0e0;
  color: #bbb;
  border: 2px solid #e0e0e0;
  cursor: not-allowed;
}

#duo-answer-area button {
  background: #fff;
  border: 2px solid #e0e0e0;
  color: #222;
}

.promo-badge {
  display: inline-block;
  background: linear-gradient(90deg, #ff9800 40%, #ff3d00 100%);
  color: #fff;
  font-weight: bold;
  font-size: 1.15em;
  padding: 4px 16px;
  border-radius: 18px;
  box-shadow: 0 2px 8px #ff980055;
  margin-bottom: 6px;
  margin-right: 10px;
  letter-spacing: 1px;
  vertical-align: middle;
  text-shadow: 0 2px 8px #ff980055;
}

.faq-section {
  max-width: 700px;
  margin: 40px auto 0 auto;
  background: #fff;
  border-radius: 24px;
  box-shadow: 0 6px 32px #b2ebf2;
  padding: 36px 28px 28px 28px;
}

.faq-title {
  font-size: 1.6em;
  color: #58cc02;
  font-weight: bold;
  margin-bottom: 24px;
  letter-spacing: 1px;
  text-align: left;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.faq-item {
  border-radius: 18px;
  background: #f7f7fb;
  box-shadow: 0 2px 12px #e0f7fa55;
  overflow: hidden;
  transition: box-shadow 0.2s;
}

.faq-item.open {
  box-shadow: 0 4px 20px #58cc0255;
}

.faq-question {
  padding-left: 2em !important;
  text-align: left;
  box-sizing: border-box;
  width: 100%;
  background: none;
  border: none;
  outline: none;
  font-size: 1.13em;
  font-weight: bold;
  color: #23244a;
  padding: 18px 18px 18px 0;
  cursor: pointer;
  transition: color 0.2s;
  position: relative;
  padding-right: 38px;
}

.faq-arrow {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%) rotate(0deg);
  width: 22px;
  height: 22px;
  display: inline-block;
  transition: transform 0.25s cubic-bezier(.4, 2, .6, 1);
}

.faq-arrow::before {
  content: '';
  display: block;
  width: 100%;
  height: 100%;
  background: none;
  mask: url('data:image/svg+xml;utf8,<svg fill="%2358cc02" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M7 10l5 5 5-5" stroke="%2358cc02" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round" fill="none"/></svg>') center/contain no-repeat;
  -webkit-mask: url('data:image/svg+xml;utf8,<svg fill="%2358cc02" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M7 10l5 5 5-5" stroke="%2358cc02" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round" fill="none"/></svg>') center/contain no-repeat;
  background-color: #58cc02;
  transition: background-color 0.2s;
}

.faq-item.open .faq-arrow {
  transform: translateY(-50%) rotate(180deg);
}

.faq-item.open .faq-arrow::before {
  background-color: #43d675;
}

.faq-answer {
  padding-left: 2em !important;
  text-align: left;
  box-sizing: border-box;
  max-height: 0;
  overflow: hidden;
  background: #fff;
  color: #23244a;
  font-size: 1em;
  padding: 0 18px;
  transition: max-height 0.3s cubic-bezier(.4, 2, .6, 1), padding 0.2s;
}

.faq-item.open .faq-answer {
  max-height: 300px;
  padding: 0 18px 18px 18px;
}

.faq-answer a {
  color: #58cc02;
  text-decoration: underline;
}

/* 价格卡片样式 - 完全同步自 index.html */
.price-cards-wrapper {
  width: 100%;
  display: flex;
  justify-content: center;
  box-sizing: border-box;
  padding: 0 0 32px 0;
  position: relative;
  z-index: 10;
}

.price-cards {
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  gap: 36px;
  align-items: stretch;
  margin: 32px 0;
  padding-bottom: 8px;
  width: max-content;
  min-width: 0;
  max-width: 100%;
  box-sizing: border-box;
  justify-content: center;
  overflow-x: auto;
}

.price-card {
  background: #fff;
  color: #23244a;
  border-radius: 28px;
  box-shadow: 0 6px 32px #b2ebf2;
  width: 380px;
  min-width: 320px;
  max-width: 420px;
  padding: 44px 32px 36px 32px;
  position: relative;
  overflow: visible;
  border: 2.5px solid transparent;
  transition: box-shadow 0.2s, border 0.2s;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: flex-start;
  height: 100%;
  cursor: pointer;
  margin-bottom: 0;
}

.price-card.active {
  border: 2.5px solid #58cc02;
  box-shadow: 0 8px 32px #58cc0255;
}

.price-card .title {
  font-size: 1.5em;
  font-weight: bold;
  margin-bottom: 10px;
  color: #23244a;
}

.price-card .price {
  font-size: 1.25em;
  font-weight: bold;
  color: #58cc02;
  margin-bottom: 18px;
}

.price-card ul {
  list-style: none;
  padding: 0;
  margin: 0 0 12px 0;
  flex: 1 1 auto;
}

.price-card li {
  position: relative;
  font-size: 1.08em;
  margin: 13px 0 13px 0;
  padding-left: 28px;
  color: #23244a;
  text-align: left;
  line-height: 1.7;
}

.price-card li::before {
  content: '\2022';
  position: absolute;
  left: 0;
  top: 0.1em;
  color: #58cc02;
  font-size: 1.3em;
  line-height: 1;
}

.price-card.promo li::before {
  color: #ff9800;
}

.price-card li .icon {
  font-size: 1.2em;
  margin-right: 10px;
}

.price-card li.no .icon {
  color: #e74c3c;
}

.price-card li.yes .icon {
  color: #58cc02;
}

.price-card.promo {
  background: linear-gradient(120deg, #e0f7fa 60%, #fff 100%);
  color: #23244a;
  border: 2px dashed #58cc02;
  min-width: 320px;
  max-width: 420px;
  padding: 44px 32px 36px 32px;
  text-align: center;
  font-weight: bold;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: default;
  box-shadow: 0 6px 32px #b2ebf2;
}

.price-card .corner-check {
  position: absolute;
  top: 18px;
  right: 18px;
  width: 38px;
  height: 38px;
  background: #58cc02;
  border-radius: 50%;
  border: 3px solid #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  box-shadow: 0 2px 8px #58cc0255;
}

.price-card .corner-check svg {
  width: 22px;
  height: 22px;
  color: #fff;
}

/* 媒体查询 - 完全同步 */
@media (max-width: 1400px) {
  .price-cards { gap: 18px; }
  .price-card, .price-card.promo { 
    width: 300px; 
    min-width: 200px; 
    max-width: 340px; 
    padding: 24px 10px 18px 10px; 
  }
  .price-card .title { font-size: 1.1em; }
}

@media (max-width: 900px) {
  .price-cards-wrapper, .section#price {
    margin-bottom: 48px !important;
  }
  .faq-section {
    margin-top: 0 !important;
    position: relative;
    z-index: 10;
  }
  .price-cards {
    flex-wrap: wrap;
    width: 100%;
    max-width: 100%;
    gap: 18px;
    justify-content: center;
  }
  .price-card, .price-card.promo { 
    width: 90vw; 
    min-width: 0; 
    max-width: 98vw; 
  }
  .price-card .title { font-size: 1em; }
}

/* 额外移动端兼容样式 */
.price-cards-wrapper, .price-cards, .price-card {
  overflow: visible !important;
}

@media (max-width: 900px) {
  .section, .faq-section {
    display: block !important;
    width: 100% !important;
    max-width: 100% !important;
    min-width: 0 !important;
    margin-left: 0 !important;
    margin-right: 0 !important;
    box-sizing: border-box !important;
    overflow-x: hidden !important;
    padding-left: 2vw !important;
    padding-right: 2vw !important;
  }
  .price-cards-wrapper, .section#price {
    margin-bottom: 48px !important;
    display: block !important;
    width: 100% !important;
    max-width: 100% !important;
    min-width: 0 !important;
    box-sizing: border-box !important;
    overflow-x: hidden !important;
    padding: 0 2vw !important;
  }
  .price-card, .price-card.promo {
    max-height: 420px;
    overflow-y: auto;
    width: calc(100% - 4vw);
    min-width: 0;
    max-width: 100%;
    margin-bottom: 0 !important;
    margin-left: auto !important;
    margin-right: auto !important;
  }
}

.price-card, .price-card.promo {
  align-items: center !important;
  text-align: center !important;
}

.price-card ul, .price-card li {
  text-align: left !important;
  align-items: flex-start !important;
}

.price-card .corner-check {
  width: 28px !important;
  height: 28px !important;
  top: 10px !important;
  right: 10px !important;
  display: flex;
  align-items: center;
  justify-content: center;
}

.price-card .corner-check svg {
  width: 16px !important;
  height: 16px !important;
  margin: 0 auto;
  display: block;
}

@media (max-width: 600px) {
  .container {
    padding: 0 0 8vw 0;
  }

  h1 {
    font-size: 1.5em;
    margin-top: 18px;
  }

  .intro-text {
    font-size: 1em;
    margin-bottom: 18px;
  }

  #duo-experience-box {
    padding: 5vw 2vw 4vw 2vw;
    border-radius: 0;
    margin: 0 0 28px 0;
    width: 100%;
  }

  .section {
    padding: 0 2vw;
    margin: 0 auto 28px auto;
  }

  .container>h1,
  .container>.intro-text {
    max-width: 100%;
    padding: 0 2vw;
  }

  .cta-btn {
    font-size: 15px;
    padding: 8px 10px;
    border-radius: 7px;
  }

  .compare-table th,
  .compare-table td {
    font-size: 13px;
    padding: 5px;
  }

  #duo-answer-area,
  #duo-word-bank {
    gap: 8px 8px;
  }

  #duo-answer-area button,
  #duo-word-bank button {
    min-width: 44px;
    min-height: 36px;
    font-size: 1em;
    border-radius: 10px;
  }
  .faq-item.open .faq-answer {
    max-height: 1200px !important;
    overflow-y: visible !important;
  }
}

.duo-top-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 1.08em;
  background: #fff;
  border-radius: 18px;
  box-shadow: 0 6px 32px #b2ebf2;
  overflow: hidden;
  margin: 0 auto;
}

.duo-top-table th {
  background: linear-gradient(90deg, #eaffea 60%, #f0f9eb 100%);
  color: #58cc02;
  font-weight: bold;
  padding: 14px 6px;
  text-align: center;
  font-size: 1.1em;
  border-bottom: 2px solid #e0f7fa;
}

.duo-top-table td {
  padding: 13px 6px;
  text-align: center;
  font-size: 1.08em;
  color: #23244a;
  background: #fff;
  transition: background 0.2s;
}

.duo-top-table tr:nth-child(even) td {
  background: #f7f7fb;
}

.duo-top-table tr:hover td {
  background: #e0f7fa;
}

.duo-rank {
  display: inline-block;
  width: 2.1em;
  height: 2.1em;
  line-height: 2.1em;
  border-radius: 50%;
  font-weight: bold;
  font-size: 1.08em;
  color: #fff;
  background: #bdbdbd;
  margin: 0 auto;
}

.duo-rank.rank-1 {
  background: linear-gradient(135deg, #ffd700 60%, #fffbe6 100%);
  color: #b8860b;
  box-shadow: 0 2px 8px #ffe58f88;
}

.duo-rank.rank-2 {
  background: linear-gradient(135deg, #c0c0c0 60%, #f7f7fb 100%);
  color: #616161;
  box-shadow: 0 2px 8px #bdbdbd88;
}

.duo-rank.rank-3 {
  background: linear-gradient(135deg, #cd7f32 60%, #fff3e0 100%);
  color: #8d5524;
  box-shadow: 0 2px 8px #ff980088;
}

@media (max-width: 900px) {
  .duo-top-table th,
  .duo-top-table td {
    font-size: 0.98em;
    padding: 10px 2px;
  }

  .duo-top-table {
    font-size: 0.98em;
    border-radius: 10px;
    box-shadow: 0 2px 12px #b2ebf2;
  }

  .duo-rank {
    width: 1.6em;
    height: 1.6em;
    line-height: 1.6em;
    font-size: 0.98em;
  }
} 

@media (max-width: 900px) {
  .faq-item.open .faq-answer {
    max-height: none !important;
    height: auto !important;
    overflow-y: visible !important;
    padding-bottom: 18px !important;
  }
} 

@media (max-width: 1200px) {
  .faq-item.open .faq-answer,
  .faq-answer {
    max-height: none !important;
    height: auto !important;
    overflow: visible !important;
    overflow-y: visible !important;
    padding-bottom: 18px !important;
    display: block !important;
  }
} 

@media (max-width: 1200px) {
  .faq-section,
  .section,
  .container,
  body,
  html {
    overflow: visible !important;
    max-height: none !important;
    height: auto !important;
  }
  .faq-item.open .faq-answer,
  .faq-answer {
    max-height: none !important;
    height: auto !important;
    overflow: visible !important;
    overflow-y: visible !important;
    padding-bottom: 18px !important;
    display: block !important;
  }
}

/* 按钮居中容器样式 */
.btn-center-container {
  text-align: center !important;
  width: 100% !important;
  display: block !important;
  margin: 0 auto !important;
}

/* 语言选择器样式 */
#languageSelector {
  padding: 8px 14px !important;
  border: 2px solid #58cc02 !important;
  border-radius: 8px !important;
  background: #fff !important;
  color: #23244a !important;
  font-size: 14px !important;
  cursor: pointer !important;
  transition: all 0.2s ease !important;
  outline: none !important;
  font-family: inherit !important;
}

#languageSelector:hover {
  border-color: #46a302 !important;
  box-shadow: 0 2px 8px rgba(88, 204, 2, 0.2) !important;
}

#languageSelector:focus {
  border-color: #46a302 !important;
  box-shadow: 0 0 0 3px rgba(88, 204, 2, 0.1) !important;
}

/* 移动端语言选择器优化 */
@media (max-width: 600px) {
  #languageSelector {
    width: 100% !important;
    max-width: 280px !important;
    padding: 10px 12px !important;
    font-size: 16px !important;
    margin-top: 8px !important;
  }
  
  .language-selector-container {
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
  }
  
  .language-selector-container label {
    margin-bottom: 8px !important;
    margin-right: 0 !important;
  }
}