/* 基础样式与主题变量（可根据品牌色调整） */
:root {
  --brand: #7b5cff;
  --brand-2: #00c6ff;
  --accent: #ff5f1f;
  --text: #111827;
  --muted: #6b7280;
  --bg: #ffffff;
  --bg-soft: #f8fafc;
  --surface: #ffffff;
  --border: #e5e7eb;
  --radius: 16px;
  --shadow-1: 0 8px 30px rgba(0,0,0,.06);
  --shadow-2: 0 18px 60px rgba(17,24,39,.12);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  padding-top: 64px; /* 为固定头部留出空间 */
  font-family: -apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,\"PingFang SC\",\"Hiragino Sans GB\",\"Microsoft YaHei\",sans-serif;
  color: var(--text);
  background: radial-gradient(1200px 500px at 15% -10%, rgba(123,92,255,.20), transparent),
              radial-gradient(1200px 500px at 85% -10%, rgba(0,198,255,.20), transparent),
              linear-gradient(180deg, #fbfdff 0%, #f7faff 60%, #ffffff 100%);
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--brand); text-decoration: none; }

.container { width: min(1300px, 94%); margin: 0 auto; }
.text-center { text-align: center; }
.section { padding: 6.25vw 0; }
.section h2 { font-size: 2.5vw; margin: 0 0 0.875vw; letter-spacing: .2px; font-weight: 600; }
.highlight { color: #ff6b35; font-size: 1.2em; font-weight: 700; }
.section-desc { color: var(--muted); margin: 0 0 2vw; font-size: 1.2vw; line-height: 1.6; }
.section + .section { border-top: 1px solid var(--border); background: linear-gradient(180deg, rgba(17,24,39,.02), rgba(17,24,39,0)); }

.skip-link { position: absolute; left: -9999px; top: auto; width: 1px; height: 1px; overflow: hidden; }
.skip-link:focus { left: 16px; top: 16px; width: auto; height: auto; background: #fff; padding: 8px 12px; border-radius: 8px; box-shadow: 0 4px 16px rgba(0,0,0,.08); }

/* 头部 */
.site-header { 
  position: fixed; 
  top: 0; 
  left: 0; 
  right: 0; 
  z-index: 50; 
  background: rgba(255,255,255,0.6); 
  backdrop-filter: blur(12px); 
  border-bottom: 1px solid var(--border); 
  transform: translateY(0);
  transition: transform 0.3s ease;
}
.site-header.hidden {
  transform: translateY(-100%);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text); font-weight: 600; }
.site-nav ul { display: flex; gap: 20px; list-style: none; margin: 0; padding: 0; }
.site-nav a { color: var(--text); }
.site-nav li { position: relative; }

/* 下拉菜单 */
.dropdown-menu { 
  position: absolute; 
  top: 100%; 
  left: 0; 
  background: #fff; 
  border-radius: 8px; 
  box-shadow: 0 8px 32px rgba(0,0,0,0.12); 
  padding: 8px 0; 
  min-width: 180px; 
  opacity: 0; 
  visibility: hidden; 
  transform: translateY(-10px); 
  transition: all 0.3s ease; 
  z-index: 1000;
  list-style: none;
  margin: 0;
}
.dropdown:hover .dropdown-menu { 
  opacity: 1; 
  visibility: visible; 
  transform: translateY(0); 
}
.dropdown-menu li { 
  display: block; 
  margin: 0; 
}
.dropdown-menu a { 
  display: block; 
  padding: 8px 16px; 
  color: var(--text); 
  font-size: 14px; 
  transition: all 0.2s ease; 
  text-decoration: none;
}
.dropdown-menu a:hover { 
  background: rgba(255,107,53,0.1); 
  color: #ff6b35; 
}
.nav-toggle { display: none; width: 44px; height: 44px; border-radius: 10px; border: 1px solid var(--border); background: #fff; align-items: center; justify-content: center; }
.nav-toggle-bar { width: 20px; height: 2px; background: var(--text); position: relative; display: block; }
.nav-toggle-bar::before, .nav-toggle-bar::after { content: ""; position: absolute; left: 0; width: 20px; height: 2px; background: var(--text); }
.nav-toggle-bar::before { top: -6px; }
.nav-toggle-bar::after { top: 6px; }

.btn { display: inline-flex; align-items: center; justify-content: center; padding: 1.2vw 2.5vw; border-radius: 999px; border: 1px solid var(--border); font-weight: 600; letter-spacing: .2px; font-size: 1.2vw; transition: all 0.3s ease; position: relative; overflow: hidden; }
.btn-primary { 
  background: linear-gradient(135deg, #ff6b35, #ff8c42); 
  color: #fff; 
  border: none; 
  box-shadow: 0 8px 32px rgba(255, 107, 53, 0.4);
  font-size: 1.4vw;
  padding: 1.5vw 3vw;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  transition: left 0.6s ease;
}
.btn-primary:hover::before {
  left: 100%;
}
.btn-primary:hover { 
  transform: translateY(-3px) scale(1.05); 
  box-shadow: 0 12px 48px rgba(255, 107, 53, 0.6);
  background: linear-gradient(135deg, #ff5722, #ff7043);
}
.btn-ghost { 
  background: rgba(255,255,255,0.9); 
  backdrop-filter: blur(10px);
  border: 2px solid rgba(255,107,53,0.3);
  color: #ff6b35;
  font-weight: 600;
}
.btn-ghost:hover { 
  background: rgba(255,107,53,0.1); 
  border-color: #ff6b35;
  transform: translateY(-2px); 
  box-shadow: 0 8px 25px rgba(255,107,53,0.2); 
}
.text-link { color: var(--brand); font-weight: 600; }

/* 英雄区 */
.hero { padding: 7.5vw 0 4.375vw; position: relative; overflow: hidden; }
.hero::before, .hero::after { content: ""; position: absolute; border-radius: 50%; filter: blur(4.375vw); opacity: .35; }
.hero::before { width: 34.375vw; height: 34.375vw; left: -8.125vw; top: -10vw; background: radial-gradient(closest-side, var(--brand), transparent); }
.hero::after { width: 34.375vw; height: 34.375vw; right: -8.125vw; top: -11.25vw; background: radial-gradient(closest-side, var(--brand-2), transparent); }
.hero-inner { display: grid; grid-template-columns: 1.05fr 1fr; gap: 3.5vw; align-items: center; }
.hero-copy h1 { font-size: 4vw; margin: 0 0 1.125vw; line-height: 1.1; font-weight: 700; }
.hero-copy p { color: var(--muted); margin: 0 0 1.75vw; font-size: 1.4vw; line-height: 1.5; }
.cta-group { display: flex; gap: 2vw; justify-content: center; margin-top: 2vw; align-items: center; }
.hero-media { filter: drop-shadow(0 28px 90px rgba(0,0,0,.15)); }

/* 卡片网格 */
.grid { display: grid; gap: 1.25vw; }
.cards { grid-template-columns: repeat(4, 1fr); }
.card { border-radius: var(--radius); overflow: hidden; background: var(--surface); border: 1px solid var(--border); box-shadow: var(--shadow-1); transition: transform .25s ease, box-shadow .25s ease; }
.card:hover { transform: translateY(-0.25vw); box-shadow: var(--shadow-2); }

/* 皮肤展示区 */
.skins-showcase { 
  margin: 0 calc(-50vw + 50%); 
  border-radius: var(--radius); 
  overflow: hidden; 
  box-shadow: var(--shadow-1); 
  position: relative; 
  height: 320px;
  width: 100vw;
  max-width: none;
}
#scrollContent { 
  display: flex; 
  animation: scroll-left 20s linear infinite; 
  white-space: nowrap;
  height: 100%;
}
#scrollContent:hover { animation-play-state: paused; }
.scroll-item { 
  flex-shrink: 0; 
  width: 1920px;
  height: 320px; 
  margin-right: 32px; 
  border-radius: 12px; 
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0,0,0,.1);
  object-fit: cover;
}
@keyframes scroll-left {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* 手写展示区 */
.handwriting-showcase { display: flex; flex-direction: column; gap: 0; margin: 0 -1.25vw; border-radius: var(--radius); overflow: hidden; box-shadow: 0 4px 12px rgba(0,0,0,.08); }
.handwriting-showcase img { 
  width: 100% !important; 
  height: auto !important; 
  max-width: 80vw !important; 
  max-height: calc(80vw * 591 / 1202) !important;
  display: block; 
  margin: 0 auto;
  object-fit: contain;
}

/* 同步展示区 */
.sync img {
  width: 100vw !important;
  height: auto !important;
  max-width: 100vw !important;
  max-height: calc(100vw * 625.25 / 1920) !important;
  display: block;
  margin-left: calc(50% - 50vw);
  margin-right: calc(50% - 50vw);
  object-fit: contain;
}

/* 表情展示区 */
.emoji-showcase {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2vw;
  margin: 2vw -2vw 0;
  padding: 0 2vw;
}

.emoji-showcase img {
  flex: 1;
  max-width: 20vw;
  height: auto;
  object-fit: contain;
  transition: transform 0.3s ease;
}

.emoji-showcase img:hover {
  transform: scale(1.1);
}

/* 功能列表 */
.feature-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.75vw; }
.feature { padding: 1.75vw; border: 1px solid var(--border); border-radius: 1.125vw; background: linear-gradient(180deg, #ffffff, #f9fbff); box-shadow: var(--shadow-1); }
.feature h3 { margin: 0 0 0.625vw; font-size: 1.6vw; font-weight: 600; }
.feature p { margin: 0 0 0.875vw; color: var(--muted); font-size: 1vw; line-height: 1.5; }

/* CTA 底部区块更突出 */
.cta-bottom { background: radial-gradient(700px 180px at 50% 0%, rgba(123,92,255,.12), transparent); }
.cta-bottom h2 { font-size: 2.2vw; margin-bottom: 1.125vw; font-weight: 600; }
.cta-group { display: flex; gap: 1vw; justify-content: center; }

/* 底部 */
.site-footer { border-top: 1px solid var(--border); background: #f8f9fa; }
.footer-inner { padding: 3vw 0 1.5vw; }
.footer-content { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2vw; margin-bottom: 2vw; }
.footer-section h3 { font-size: 1.1vw; font-weight: 600; margin: 0 0 1vw; color: var(--text); }
.footer-section nav { display: flex; flex-direction: column; gap: 0.5vw; }
.footer-section a { color: var(--muted); text-decoration: none; font-size: 0.9vw; transition: color 0.2s ease; }
.footer-section a:hover { color: var(--brand); }
.footer-bottom { 
  border-top: 1px solid var(--border); 
  padding: 2vw 0; 
  text-align: center; 
}

.footer-links { 
  display: flex; 
  justify-content: center; 
  align-items: center; 
  gap: 0; 
  margin-bottom: 1.5vw; 
  flex-wrap: wrap; 
}

.footer-links a { 
  color: var(--text); 
  text-decoration: none; 
  font-weight: 500; 
  font-size: 0.9vw; 
  transition: color 0.3s ease; 
  padding: 0.5vw 1vw; 
  border-radius: 6px; 
}

.footer-links a:hover { 
  color: var(--brand); 
  background: rgba(123, 92, 255, 0.1); 
}

.footer-links .divider { 
  color: var(--border); 
  font-size: 0.7vw; 
  margin: 0 0.5vw; 
}

.footer-copyright { 
  display: flex; 
  flex-direction: column; 
  align-items: center; 
  gap: 1vw; 
}

.footer-bottom .legal-links { 
  margin-bottom: 1.5vw; 
}

.copyright-text { 
  color: var(--muted); 
  font-size: 0.8vw; 
  margin: 0; 
  line-height: 1.5; 
}

.copyright-text a { 
  color: var(--brand); 
  text-decoration: none; 
  transition: color 0.3s ease; 
}

.copyright-text a:hover { 
  color: var(--accent); 
  text-decoration: underline; 
}

.legal-links { 
  display: flex; 
  align-items: center; 
  gap: 1.5vw; 
  font-size: 0.8vw; 
}

.legal-links a { 
  color: var(--muted); 
  text-decoration: none; 
  transition: color 0.3s ease; 
  padding: 0.3vw 0.5vw; 
  border-radius: 4px; 
}

.legal-links a:hover { 
  color: var(--brand); 
  background: rgba(123, 92, 255, 0.1); 
}

.divider { 
  color: var(--border); 
  font-size: 0.7vw; 
  margin: 0 0.5vw; 
}

/* 专题页面样式 */
.breadcrumb { background: #f8f9fa; padding: 1vw 0; border-bottom: 1px solid var(--border); }
.breadcrumb ol { display: flex; gap: 0.5vw; list-style: none; margin: 0; padding: 0; }
.breadcrumb li:not(:last-child)::after { content: ">"; margin: 0 0.5vw; color: var(--muted); }
.breadcrumb a { color: var(--brand); text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }

.page-header { padding: 4vw 0; background: linear-gradient(135deg, #f8f9fa, #ffffff); }
.page-header h1 { font-size: 3vw; margin: 0 0 1vw; font-weight: 700; }
.page-desc { font-size: 1.3vw; color: var(--muted); margin: 0; line-height: 1.6; }

.features-detail { padding: 4vw 0; }
.feature-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2vw; }
.feature-card { 
  background: #fff; 
  border-radius: 12px; 
  padding: 2vw; 
  box-shadow: 0 4px 20px rgba(0,0,0,0.08); 
  border: 1px solid var(--border);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.feature-card:hover { 
  transform: translateY(-4px); 
  box-shadow: 0 8px 30px rgba(0,0,0,0.12); 
}
.feature-card h2 { 
  font-size: 1.5vw; 
  margin: 0 0 1vw; 
  color: var(--text); 
  font-weight: 600;
}
.feature-card p { 
  color: var(--muted); 
  margin: 0 0 1vw; 
  line-height: 1.6; 
  font-size: 1vw;
}
.feature-card ul { 
  list-style: none; 
  padding: 0; 
  margin: 0; 
}
.feature-card li { 
  padding: 0.3vw 0; 
  color: var(--text); 
  font-size: 0.9vw;
  position: relative;
  padding-left: 1.2vw;
}
.feature-card li::before { 
  content: "✓"; 
  position: absolute; 
  left: 0; 
  color: #ff6b35; 
  font-weight: bold;
}

.tips { background: #f8f9fa; }
.tips h2 { text-align: center; margin-bottom: 2vw; font-size: 2.2vw; }
.tips-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5vw; }
.tip-item { 
  background: #fff; 
  padding: 1.5vw; 
  border-radius: 8px; 
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}
.tip-item h3 { 
  font-size: 1.2vw; 
  margin: 0 0 0.8vw; 
  color: var(--text); 
  font-weight: 600;
}
.tip-item p { 
  color: var(--muted); 
  margin: 0; 
  line-height: 1.5; 
  font-size: 0.95vw;
}

/* 页面头部样式 */
.header-content h1 { 
  font-size: 4vw; 
  margin: 0 0 0.5vw; 
  font-weight: 700; 
  background: linear-gradient(135deg, #ff6b35, #ff8c42);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.header-content h2 { 
  font-size: 2vw; 
  margin: 0 0 1.5vw; 
  color: var(--muted); 
  font-weight: 400;
}
.stats-grid { 
  display: grid; 
  grid-template-columns: repeat(4, 1fr); 
  gap: 2vw; 
  margin-top: 3vw; 
}
.stat-item { 
  text-align: center; 
  padding: 1.5vw; 
  background: rgba(255,255,255,0.8); 
  border-radius: 12px; 
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}
.stat-number { 
  font-size: 2.5vw; 
  font-weight: 700; 
  color: #ff6b35; 
  margin-bottom: 0.5vw;
}
.stat-label { 
  font-size: 0.9vw; 
  color: var(--muted); 
  font-weight: 500;
}

/* 文章列表样式 */
.articles-section { padding: 4vw 0; }
.articles-grid { 
  display: grid; 
  grid-template-columns: repeat(2, 1fr); 
  gap: 2vw; 
}
.article-card { 
  background: #fff; 
  border-radius: 16px; 
  padding: 2.5vw; 
  box-shadow: 0 8px 32px rgba(0,0,0,0.08); 
  border: 1px solid var(--border);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}
.article-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #ff6b35, #ff8c42);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}
.article-card:hover::before {
  transform: scaleX(1);
}
.article-card:hover { 
  transform: translateY(-8px); 
  box-shadow: 0 16px 48px rgba(0,0,0,0.15); 
}
.article-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1vw;
}
.article-category {
  background: linear-gradient(135deg, #ff6b35, #ff8c42);
  color: #fff;
  padding: 0.3vw 0.8vw;
  border-radius: 20px;
  font-size: 0.7vw;
  font-weight: 600;
}
.article-date {
  color: var(--muted);
  font-size: 0.8vw;
  font-weight: 500;
}
.article-card h2 { 
  font-size: 1.4vw; 
  margin: 0 0 1vw; 
  line-height: 1.3;
}
.article-card h2 a { 
  color: var(--text); 
  text-decoration: none; 
  transition: color 0.2s ease;
}
.article-card h2 a:hover { 
  color: #ff6b35; 
}
.article-card p { 
  color: var(--muted); 
  margin: 0 0 1.5vw; 
  line-height: 1.6; 
  font-size: 0.95vw;
}
.article-tags { 
  display: flex; 
  gap: 0.5vw; 
  flex-wrap: wrap; 
  margin-bottom: 1.5vw;
}
.tag { 
  background: rgba(255,107,53,0.1); 
  color: #ff6b35; 
  padding: 0.3vw 0.8vw; 
  border-radius: 15px; 
  font-size: 0.7vw; 
  font-weight: 500;
  transition: all 0.2s ease;
}
.tag:hover {
  background: rgba(255,107,53,0.2);
  transform: translateY(-1px);
}
.article-footer {
  border-top: 1px solid #f0f0f0;
  padding-top: 1vw;
}
.read-more {
  color: #ff6b35;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9vw;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.3vw;
}
.read-more:hover {
  color: #ff5722;
  transform: translateX(4px);
}

/* 文章内容页面样式 */
.article-content { 
  padding: 4vw 0; 
  background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
  min-height: 100vh;
}
.article-content .container { 
  max-width: 900px; 
  background: #fff;
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.1);
  padding: 4vw;
  margin: 2vw auto;
}
.article-content .article-header {
  text-align: center;
  margin-bottom: 4vw;
  padding-bottom: 3vw;
  border-bottom: 3px solid #f0f0f0;
  position: relative;
}
.article-content .article-header::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, #ff6b35, #ff8c42);
  border-radius: 2px;
}
.article-meta {
  display: flex;
  justify-content: center;
  gap: 2vw;
  margin-bottom: 2vw;
  flex-wrap: wrap;
}
.article-category {
  background: linear-gradient(135deg, #ff6b35, #ff8c42);
  color: #fff;
  padding: 0.6vw 1.5vw;
  border-radius: 25px;
  font-size: 0.8vw;
  font-weight: 600;
  box-shadow: 0 4px 15px rgba(255,107,53,0.3);
  transition: all 0.3s ease;
}
.article-category:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255,107,53,0.4);
}
.article-date, .article-read-time {
  color: var(--muted);
  font-size: 0.8vw;
  font-weight: 500;
  background: rgba(255,107,53,0.1);
  padding: 0.4vw 1vw;
  border-radius: 15px;
}
.article-content h1 {
  font-size: 2.2vw;
  margin: 0 0 1.2vw;
  line-height: 1.3;
  color: var(--text);
  font-weight: 700;
  background: linear-gradient(135deg, #2c3e50, #34495e);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.article-summary {
  font-size: 1vw;
  color: var(--muted);
  line-height: 1.6;
  margin: 0;
  font-style: italic;
  background: rgba(255,107,53,0.05);
  padding: 1.2vw;
  border-radius: 10px;
  border-left: 3px solid #ff6b35;
}
.article-body {
  line-height: 1.8;
  color: var(--text);
  font-size: 1.05vw;
}
.article-body h2 {
  font-size: 1.6vw;
  margin: 3vw 0 1.5vw;
  color: var(--text);
  font-weight: 700;
  position: relative;
  padding-left: 1.2vw;
}
.article-body h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 30px;
  background: linear-gradient(135deg, #ff6b35, #ff8c42);
  border-radius: 3px;
}
.article-body h3 {
  font-size: 1.3vw;
  margin: 2.5vw 0 1.2vw;
  color: #2c3e50;
  font-weight: 600;
  position: relative;
  padding-left: 0.8vw;
}
.article-body h3::before {
  content: '▶';
  position: absolute;
  left: 0;
  color: #ff6b35;
  font-size: 0.8em;
}
.article-body p {
  font-size: 0.95vw;
  margin: 0 0 1.5vw;
  text-align: justify;
  text-indent: 2em;
}
.article-body ul, .article-body ol {
  margin: 0 0 2vw;
  padding-left: 2.5vw;
  background: rgba(255,107,53,0.03);
  padding: 1.5vw 2.5vw;
  border-radius: 8px;
  border-left: 3px solid rgba(255,107,53,0.2);
}
.article-body li {
  font-size: 1.05vw;
  margin: 0.8vw 0;
  line-height: 1.7;
  position: relative;
}
.article-body ul li::before {
  content: '●';
  color: #ff6b35;
  font-weight: bold;
  position: absolute;
  left: -1.5vw;
}
.article-body ol li {
  counter-increment: list-counter;
}
.article-body ol {
  counter-reset: list-counter;
}
.article-body ol li::before {
  content: counter(list-counter) '.';
  color: #ff6b35;
  font-weight: bold;
  position: absolute;
  left: -1.5vw;
}
.article-body strong {
  color: #ff6b35;
  font-weight: 700;
  background: rgba(255,107,53,0.1);
  padding: 0.1vw 0.3vw;
  border-radius: 4px;
}
.article-body blockquote {
  background: linear-gradient(135deg, rgba(255,107,53,0.05), rgba(255,140,66,0.05));
  border-left: 4px solid #ff6b35;
  padding: 2vw;
  margin: 2vw 0;
  border-radius: 8px;
  font-style: italic;
  position: relative;
}
.article-body blockquote::before {
  content: '"';
  font-size: 4vw;
  color: #ff6b35;
  position: absolute;
  top: -1vw;
  left: 1vw;
  opacity: 0.3;
}
.article-footer {
  margin-top: 5vw;
  padding-top: 3vw;
  border-top: 2px solid #f0f0f0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 2vw;
  background: rgba(255,107,53,0.02);
  padding: 3vw;
  border-radius: 12px;
}
.article-actions {
  display: flex;
  gap: 1.5vw;
}
.article-actions .btn {
  padding: 0.8vw 2vw;
  font-size: 0.9vw;
  border-radius: 25px;
  transition: all 0.3s ease;
}
.article-actions .btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

/* 响应式 */
@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; text-align: center; }
  .cta-group { justify-content: center; gap: 3vw; margin-top: 3vw; }
  .cards { grid-template-columns: repeat(2, 1fr); }
  .feature-list { grid-template-columns: 1fr; }
  .hero-copy h1 { font-size: max(44px, 8vw); }
  .section h2 { font-size: max(32px, 5vw); }
  .highlight { font-size: 1.3em; }
  .section-desc { font-size: max(16px, 2.5vw); }
  .btn { font-size: max(16px, 2.8vw); padding: max(14px, 2vw) max(24px, 3vw); }
  .btn-primary { 
    font-size: max(18px, 3.2vw); 
    padding: max(16px, 2.5vw) max(28px, 3.5vw);
    font-weight: 700;
  }
  .feature h3 { font-size: max(18px, 3vw); }
  .feature p { font-size: max(14px, 2vw); }
  .cta-bottom h2 { font-size: max(28px, 4vw); }
  .skins-showcase { margin: 0 -1vw; }
  .handwriting-showcase { margin: 0 -1vw; }
  .handwriting-showcase img { max-width: 85vw; max-height: calc(85vw * 591 / 1202); }
  .sync img { 
    width: 100vw !important; 
    margin-left: calc(50% - 50vw); 
    margin-right: calc(50% - 50vw); 
    max-height: calc(100vw * 625.25 / 1920); 
  }
  .emoji-showcase {
    flex-direction: row;
    gap: 1vw;
    margin: 2vw -1vw 0;
    padding: 0 1vw;
  }
  .emoji-showcase img {
    max-width: 22vw;
  }
  .footer-content { grid-template-columns: repeat(2, 1fr); gap: 3vw; }
  .footer-section h3 { font-size: max(16px, 3vw); }
  .footer-section a { font-size: max(14px, 2.5vw); }
  .footer-bottom { flex-direction: column; gap: 2vw; text-align: center; }
  .footer-links { flex-wrap: wrap; justify-content: center; }
  .footer-links a { font-size: max(14px, 2.5vw); }
  .copyright { font-size: max(12px, 2vw); }
  
  /* 专题页面移动端样式 */
  .page-header h1 { font-size: max(28px, 5vw); }
  .page-desc { font-size: max(16px, 2.5vw); }
  .feature-grid { grid-template-columns: 1fr; gap: 2vw; }
  .feature-card { padding: 3vw; }
  .feature-card h2 { font-size: max(20px, 3.5vw); }
  .feature-card p { font-size: max(14px, 2.2vw); }
  .feature-card li { font-size: max(13px, 2vw); }
  .tips-grid { grid-template-columns: 1fr; gap: 2vw; }
  .tip-item { padding: 2.5vw; }
  .tip-item h3 { font-size: max(16px, 2.8vw); }
  .tip-item p { font-size: max(14px, 2.2vw); }
  
  /* 页面头部移动端样式 */
  .header-content h1 { font-size: max(32px, 6vw); }
  .header-content h2 { font-size: max(18px, 3.5vw); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 2vw; }
  .stat-item { padding: 2.5vw; }
  .stat-number { font-size: max(24px, 4vw); }
  .stat-label { font-size: max(12px, 2.2vw); }
  
  /* 文章列表移动端样式 */
  .articles-grid { grid-template-columns: 1fr; gap: 3vw; }
  .article-card { padding: 4vw; }
  .article-header { flex-direction: column; align-items: flex-start; gap: 1vw; }
  .article-category { font-size: max(11px, 2vw); padding: 0.5vw 1vw; }
  .article-date { font-size: max(12px, 2.2vw); }
  .article-card h2 { font-size: max(18px, 3.2vw); }
  .article-card p { font-size: max(14px, 2.2vw); }
  .tag { font-size: max(11px, 1.8vw); padding: 0.5vw 1vw; }
  .read-more { font-size: max(14px, 2.2vw); }
  
  /* 文章内容页面移动端样式 */
  .article-content .container { 
    max-width: 100%; 
    padding: 3vw; 
    margin: 1vw auto;
    border-radius: 15px;
  }
  .article-meta { flex-direction: column; gap: 1.5vw; }
  .article-category { 
    font-size: max(12px, 2.2vw); 
    padding: 1vw 2vw; 
    border-radius: 20px;
  }
  .article-date, .article-read-time { 
    font-size: max(12px, 2.2vw); 
    padding: 0.8vw 1.5vw;
    border-radius: 12px;
  }
  .article-content h1 { 
    font-size: max(20px, 3.8vw); 
    line-height: 1.2;
  }
  .article-summary { 
    font-size: max(14px, 2.4vw); 
    padding: 1.5vw;
    border-radius: 8px;
  }
  .article-body h2 { 
    font-size: max(18px, 3.2vw); 
    margin: 3vw 0 1.5vw; 
    padding-left: 1.5vw;
  }
  .article-body h2::before {
    width: 4px;
    height: 20px;
  }
  .article-body h3 { 
    font-size: max(16px, 2.8vw); 
    margin: 2.5vw 0 1.2vw; 
    padding-left: 1.2vw;
  }
  .article-body h3::before {
    font-size: 0.7em;
  }
  .article-body p { 
    font-size: max(14px, 2.2vw); 
    text-indent: 1.5em;
  }
  .article-body ul, .article-body ol {
    padding: 2vw 3vw;
    border-radius: 6px;
  }
  .article-body li { 
    font-size: max(16px, 2.5vw); 
    margin: 1vw 0;
  }
  .article-body ul li::before {
    left: -2vw;
  }
  .article-body ol li::before {
    left: -2vw;
  }
  .article-body strong {
    padding: 0.2vw 0.5vw;
    border-radius: 3px;
  }
  .article-body blockquote {
    padding: 2.5vw;
    border-radius: 6px;
  }
  .article-body blockquote::before {
    font-size: 3vw;
    top: -0.5vw;
  }
  .article-footer { 
    flex-direction: column; 
    text-align: center; 
    padding: 2.5vw;
    border-radius: 10px;
  }
  .article-actions { 
    flex-direction: column; 
    gap: 2vw; 
    width: 100%;
  }
  .article-actions .btn {
    padding: 1.2vw 3vw;
    font-size: max(14px, 2.2vw);
    border-radius: 20px;
  }
  
  .nav-toggle { display: inline-flex; }
  .site-nav { position: fixed; inset: 64px 0 auto 0; height: calc(100vh - 64px); background: rgba(255,255,255,.98); transform: translateY(-4%); opacity: 0; pointer-events: none; transition: opacity .2s ease; }
  .site-nav ul { flex-direction: column; padding: 1.25vw; gap: 0.75vw; }
  .site-nav.is-open { opacity: 1; pointer-events: auto; }
  
  /* 底部移动端响应式 */
  .footer-links { 
    gap: 1vw; 
    justify-content: center; 
  }
  
  .footer-links a { 
    font-size: max(12px, 3vw); 
    padding: 0.8vw 1.5vw; 
  }
  
  .footer-links .divider { 
    font-size: max(10px, 2.5vw); 
    margin: 0 0.3vw; 
  }
  
  .copyright-text { 
    font-size: max(12px, 3vw); 
  }
}

/* 额外断点微调 */
@media (max-width: 1280px) {
  .section { padding: 5.5vw 0; }
}
@media (max-width: 1024px) {
  .section h2 { font-size: 32px; }
}
@media (max-width: 768px) {
  .cards { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .btn { padding: 12px 16px; }
}

/* 隐私政策页面样式 */
.privacy-hero {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 4vw 0;
  margin-bottom: 2vw;
}

.privacy-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.privacy-header h1 {
  font-size: 3.5vw;
  margin: 0 0 1.5vw;
  font-weight: 700;
  background: linear-gradient(45deg, #fff, #f0f8ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.privacy-subtitle {
  font-size: 1.3vw;
  margin: 0 0 2vw;
  opacity: 0.9;
  line-height: 1.6;
}

.privacy-meta {
  display: flex;
  gap: 2vw;
  justify-content: center;
  font-size: 0.9vw;
  opacity: 0.8;
}

.privacy-meta span {
  background: rgba(255, 255, 255, 0.1);
  padding: 0.5vw 1vw;
  border-radius: 20px;
  backdrop-filter: blur(10px);
}

.privacy-content {
  padding: 2vw 0 4vw;
}

.privacy-toc {
  background: #f8fafc;
  border-radius: 12px;
  padding: 2vw;
  margin-bottom: 3vw;
  border-left: 4px solid var(--brand);
}

.privacy-toc h2 {
  font-size: 1.5vw;
  margin: 0 0 1.5vw;
  color: var(--text);
}

.privacy-toc ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1vw;
}

.privacy-toc li {
  margin: 0;
}

.privacy-toc a {
  display: block;
  padding: 0.8vw 1.2vw;
  background: white;
  border-radius: 8px;
  color: var(--text);
  text-decoration: none;
  transition: all 0.3s ease;
  border: 1px solid var(--border);
}

.privacy-toc a:hover {
  background: var(--brand);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(123, 92, 255, 0.3);
}

.privacy-sections {
  max-width: 900px;
  margin: 0 auto;
}

.privacy-section {
  margin-bottom: 4vw;
}

.privacy-section h2 {
  font-size: 2.2vw;
  margin: 0 0 2vw;
  color: var(--text);
  position: relative;
  padding-left: 1.5vw;
}

.privacy-section h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 2vw;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  border-radius: 2px;
}

.privacy-card {
  background: white;
  border-radius: 12px;
  padding: 2vw;
  margin-bottom: 1.5vw;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  border: 1px solid var(--border);
  transition: all 0.3s ease;
}

.privacy-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

.privacy-card h3 {
  font-size: 1.4vw;
  margin: 0 0 1vw;
  color: var(--text);
  font-weight: 600;
}

.privacy-card p {
  font-size: 1vw;
  line-height: 1.7;
  margin: 0 0 1.5vw;
  color: var(--muted);
}

.privacy-card ul {
  margin: 0;
  padding-left: 0;
  list-style: none;
}

.privacy-card li {
  font-size: 1vw;
  line-height: 1.6;
  margin: 0.8vw 0;
  padding-left: 1.5vw;
  position: relative;
  color: var(--muted);
}

.privacy-card li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--brand);
  font-weight: bold;
  font-size: 1.2em;
}

.privacy-card strong {
  color: var(--text);
  font-weight: 600;
}

.contact-info {
  display: grid;
  gap: 1.5vw;
  margin-top: 1.5vw;
}

.contact-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1vw 1.5vw;
  background: #f8fafc;
  border-radius: 8px;
  border: 1px solid var(--border);
}

.contact-item strong {
  color: var(--text);
  font-weight: 600;
}

.contact-item span {
  color: var(--brand);
  font-weight: 500;
}

/* 隐私页面移动端响应式 */
@media (max-width: 768px) {
  .privacy-header h1 {
    font-size: max(24px, 6vw);
  }
  
  .privacy-subtitle {
    font-size: max(16px, 3.5vw);
  }
  
  .privacy-meta {
    flex-direction: column;
    gap: 1vw;
    font-size: max(14px, 3vw);
  }
  
  .privacy-toc {
    padding: 3vw;
  }
  
  .privacy-toc h2 {
    font-size: max(18px, 4vw);
  }
  
  .privacy-toc ul {
    grid-template-columns: 1fr;
    gap: 2vw;
  }
  
  .privacy-toc a {
    padding: 2vw 3vw;
    font-size: max(14px, 3.5vw);
  }
  
  .privacy-section h2 {
    font-size: max(20px, 5vw);
    padding-left: 3vw;
  }
  
  .privacy-section h2::before {
    width: 6px;
    height: 4vw;
  }
  
  .privacy-card {
    padding: 3vw;
    margin-bottom: 3vw;
  }
  
  .privacy-card h3 {
    font-size: max(16px, 4vw);
  }
  
  .privacy-card p {
    font-size: max(14px, 3.5vw);
  }
  
  .privacy-card li {
    font-size: max(14px, 3.5vw);
    padding-left: 3vw;
  }
  
  .contact-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 1vw;
    padding: 2vw 3vw;
  }
}