/* styles.css —— AI2Word 深色主题 · 紫罗兰强调 (#766EE9) */

:root {
  --primary: #766EE9;
  --primary-dark: #5e54c9;
  --primary-light: #2a2442;
  --accent: #a99cf0;
  --gradient-main: linear-gradient(135deg, #766EE9 0%, #5e54c9 100%);
  --gradient-light: linear-gradient(135deg, #2a2442 0%, #1f1c33 100%);
  --bg-page: #121212;
  --bg-soft: #1e1e1e;
  --bg-card: #1e1e1e;
  --text-dark: #f0f0f0;
  --text-muted: #b0b0b0;
  --border-light: #2a2a2a;
  --shadow-sm: 0 4px 10px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 12px 30px -8px rgba(0, 0, 0, 0.6);
  --shadow-lg: 0 25px 50px -12px rgba(118, 110, 233, 0.2);
  --radius-md: 20px;
  --radius-lg: 28px;
  --transition: all 0.2s ease;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg-page);
  color: var(--text-dark);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a {
  text-decoration: none;
  color: inherit;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 头部 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(18, 18, 18, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-light);
  padding: 20px 0;
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.logo-link {
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo-icon {
  background: var(--gradient-main);
  color: white;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  font-size: 20px;
}

.logo-text {
  font-weight: 800;
  font-size: 1.6rem;
  letter-spacing: -0.02em;
  background: #ffffff;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.badge-experimental {
  background: var(--primary-light);
  color: #ffffff;
  padding: 4px 12px;
  border-radius: 40px;
  font-size: 14px;
  font-weight: 700;
}

.main-nav {
  display: flex;
  gap: 36px;
}

.main-nav a {
  font-weight: 500;
  color: var(--text-muted);
  transition: var(--transition);
}

.main-nav a:hover {
  color: var(--primary);
}

.header-actions {
  display: flex;
  gap: 12px;
}

.btn-header-outline {
  padding: 8px 18px;
  border-radius: 40px;
  border: 1px solid var(--border-light);
  font-weight: 500;
  color: var(--text-muted);
}

.btn-header-primary {
  background: var(--gradient-main);
  color: white;
  padding: 8px 22px;
  border-radius: 40px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 4px 10px rgba(118, 110, 233, 0.3);
}

/* HERO */
.hero-new {
  padding: 120px 0;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-chip {
  background: var(--gradient-light);
  display: inline-block;
  padding: 6px 18px;
  border-radius: 60px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 24px;
}

.hero-headline {
  font-size: 3.4rem;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
  background: #ffffff;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-sub {
  color: var(--text-muted);
  font-size: 1.1rem;
  margin-bottom: 36px;
  max-width: 90%;
}

.hero-actions {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.btn-primary-large {
  background: var(--gradient-main);
  color: white;
  padding: 14px 32px;
  border-radius: 60px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  box-shadow: var(--shadow-lg);
  transition: var(--transition);
  border: none;
}

.btn-outline-large {
  border: 1px solid var(--border-light);
  padding: 14px 32px;
  border-radius: 60px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: transparent;
  color: var(--text-dark);
}

.trust-badge {
  display: flex;
  gap: 24px;
  color: var(--text-muted);
  font-weight: 500;
}

.hero-visual-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-light);
  position: relative;
}

.preview-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 30px;
  color: var(--text-muted);
}

.preview-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #4a4a4a;
}

.preview-body {
  display: flex;
  align-items: center;
  justify-content: space-around;
  margin-bottom: 30px;
}

.file-badge {
  display: flex;
  background: #2a2a2a;
  gap: 12px;
  padding: 12px 24px;
  border-radius: 60px;
  font-weight: 600;
  color: var(--text-dark);
}

.word-badge {
  background: var(--gradient-main);
  color: white;
}

.arrow-animation {
  font-size: 32px;
  color: var(--primary);
}

.preview-detail {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.detail-item {
  background: #252525;
  padding: 12px 16px;
  border-radius: 16px;
  color: var(--text-muted);
}

.float-badge {
  position: absolute;
  bottom: -16px;
  right: 30px;
  background: var(--gradient-main);
  color: white;
  padding: 8px 18px;
  border-radius: 60px;
  font-weight: 600;
  box-shadow: var(--shadow-md);
}

/* 通用区块 */
.section-spacing {
  padding: 90px 0;
}

.bg-soft-gray {
  background: var(--bg-soft);
}

.bg-gradient-light {
  background: var(--gradient-light);
}

.section-header-left {
  margin-bottom: 48px;
}

.section-header-left h2 {
  font-size: 2.4rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 16px;
  color: var(--text-dark);
}

.section-header-left p {
  color: var(--text-muted);
}

.highlight-badge {
  background: var(--primary-light);
  color: #ffffff;
  font-size: 0.9rem;
  padding: 4px 14px;
  border-radius: 60px;
}

.section-header-center {
  text-align: center;
  margin-bottom: 56px;
}

.section-header-center h2 {
  font-size: 2.4rem;
  background: #ffffff;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  display: inline-block;
}

.section-header-center p {
  color: var(--text-muted);
}

/* 表格 */
.table-wrapper-modern {
  background: var(--bg-card);
  border-radius: 28px;
  padding: 8px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-light);
}

.compatibility-table {
  width: 100%;
  border-collapse: collapse;
  color: var(--text-dark);
}

.compatibility-table th {
  text-align: left;
  padding: 18px 20px;
  font-weight: 600;
  color: #fff;
}

.compatibility-table td {
  padding: 14px 20px;
  border-top: 1px solid #2a2a2a;
}

.badge-full {
  background: #1e3a2f;
  color: #6ee7b7;
  padding: 4px 12px;
  border-radius: 40px;
  font-weight: 600;
  font-size: 0.8rem;
}

.badge-partial {
  background: #3d2e0a;
  color: #fde047;
  padding: 4px 12px;
  border-radius: 40px;
}

.table-note {
  margin-top: 20px;
  color: var(--text-muted);
}

/* 插件 */
.plugin-showcase {
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  gap: 30px;
}

.plugin-featured {
  background: var(--bg-card);
  border-radius: 28px;
  padding: 36px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-light);
}

.plugin-icon-large {
  font-size: 48px;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 24px;
}

.plugin-featured h3 {
  font-size: 1.8rem;
  margin-bottom: 16px;
  color: var(--text-dark);
}

.plugin-featured p {
  color: var(--text-muted);
}

.plugin-link {
  color: var(--primary);
  font-weight: 700;
  margin-top: 24px;
  display: inline-block;
}

.plugin-mini-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.plugin-mini-card {
  background: var(--bg-card);
  border-radius: 24px;
  padding: 24px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  transition: var(--transition);
}

.plugin-mini-card i {
  font-size: 32px;
  margin-bottom: 16px;
}

.plugin-mini-card span {
  display: block;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-dark);
}

.plugin-mini-card a {
  color: var(--primary);
}

/* 全端 + App */
.platforms-dual {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 50px;
}

.platforms-content h2 {
  color: var(--text-dark);
}

.platforms-desc {
  color: var(--text-muted);
}

.platform-icons {
  display: flex;
  gap: 24px;
  margin: 28px 0;
}

.pf-item {
  background: var(--bg-card);
  padding: 10px 22px;
  border-radius: 60px;
  font-weight: 600;
  box-shadow: var(--shadow-sm);
  color: var(--text-dark);
  border: 1px solid var(--border-light);
}

.qr-panel-new {
  background: var(--bg-card);
  border-radius: 40px;
  padding: 40px;
  box-shadow: var(--shadow-lg);
  text-align: center;
  border: 1px solid var(--border-light);
}

.qr-header {
  font-size: 1.8rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 16px;
  color: var(--text-dark);
}

.qr-panel-new p {
  color: var(--text-muted);
}

.qr-duo {
  display: flex;
  justify-content: center;
  margin: 32px 0;
}

.qr-block {
  text-align: center;
}

.qr-block img {
  width: 210px;
  border-radius: 28px;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.4);
  margin-bottom: 16px;
  background: white;
  padding: 8px;
}

.qr-block span {
  color: var(--text-muted);
}

.qr-footer-note {
  margin-top: 16px;
}

.appstore-link {
  background: var(--gradient-main);
  color: white;
  padding: 12px 28px;
  border-radius: 60px;
  font-weight: 600;
  display: inline-block;
  box-shadow: 0 8px 16px rgba(118, 110, 233, 0.3);
}

/* 优势卡片 */
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.benefit-card {
  background: var(--bg-card);
  border-radius: 28px;
  padding: 36px 24px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  transition: var(--transition);
}

.benefit-icon {
  font-size: 36px;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 24px;
}

.benefit-card h3 {
  color: var(--text-dark);
  margin-bottom: 12px;
}

.benefit-card p {
  color: var(--text-muted);
}

.keyword-strip {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin-top: 48px;
}

.keyword-strip span {
  background: var(--primary-light);
  padding: 8px 24px;
  border-radius: 60px;
  font-weight: 500;
  color: var(--accent);
}

/* FAQ 双栏 */
.faq-two-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
}

.faq-category-block {
  background: var(--bg-card);
  border-radius: 28px;
  padding: 28px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
}

.category-title {
  font-size: 1.6rem;
  font-weight: 700;
  border-left: 6px solid var(--primary);
  padding-left: 18px;
  margin-bottom: 28px;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.faq-entry {
  margin-bottom: 24px;
}

.faq-question {
  font-weight: 700;
  margin-bottom: 8px;
  display: flex;
  align-items: baseline;
  gap: 8px;
  color: var(--text-dark);
}

.faq-answer {
  color: var(--text-muted);
  padding-left: 28px;
  font-size: 0.9rem;
}

/* 支持 */
.support-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
}

.support-info {
  display: flex;
  justify-content: center;
  flex-direction: column;
}

.support-info h2 {
  color: var(--text-dark);
}

.support-info p {
  color: var(--text-muted);
}

.support-links-group {
  display: flex;
  gap: 16px;
  margin-top: 24px;
  flex-wrap: wrap;
}

.support-link-btn {
  border: 1px solid var(--border-light);
  padding: 10px 24px;
  border-radius: 60px;
  font-weight: 500;
  background: var(--bg-card);
  color: var(--text-dark);
}

.social-connect-card {
  background: var(--bg-soft);
  border-radius: 32px;
  padding: 36px;
  border: 1px solid var(--border-light);
}

.social-connect-card h3 {
  color: var(--text-dark);
  font-size: 26px;
}

.social-links-row {
  display: flex;
  gap: 28px;
  margin: 28px 0;
}

.social-links-row a,
.wechat-hover-trigger {
  color: var(--text-muted);
  cursor: pointer;
}

.wechat-hover-trigger {
  position: relative;
}

.wechat-qr-pop {
  position: absolute;
  bottom: 40px;
  left: 0;
  width: 140px;
  opacity: 0;
  pointer-events: none;
  transition: 0.2s;
  background: var(--bg-card);
  padding: 12px;
  border-radius: 20px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-light);
}

.wechat-hover-trigger:hover .wechat-qr-pop {
  opacity: 1;
  pointer-events: auto;
}

.wechat-qr-pop img {
  width: 100%;
  border-radius: 12px;
}

.email-line {
  color: var(--text-muted);
  margin-top: 24px;
}

/* 页脚 */
.footer-new {
  background: #0a0a0a;
  color: #a0a0a0;
  padding: 60px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
}

.footer-logo {
  font-size: 26px;
  font-weight: 800;
  color: white;
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-col h4 {
  color: white;
  margin-bottom: 18px;
}

.footer-col a {
  display: block;
  color: #a0a0a0;
  margin-bottom: 12px;
}

.preview-body-img {
  border-radius: 6px;
  width: 30px;
  height: 30px;
}

.copyright-bar {
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid #2a2a2a;
  margin-top: 20px;
  color: #a0a0a0;
}

.copyright-bar a {
  color: #a0a0a0;
}

/* 响应式 */
@media (max-width: 1024px) {

  .hero-grid,
  .platforms-dual,
  .support-split,
  .plugin-showcase {
    grid-template-columns: 1fr;
  }

  .benefits-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .main-nav {
    display: none;
  }
}

@media (max-width: 640px) {
  .benefits-grid {
    grid-template-columns: 1fr;
  }

  .faq-two-columns {
    grid-template-columns: 1fr;
  }
}