```css
/* ========== 妖精动漫 全站样式 ========== */
/* 基础重置与字体 */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', 'Noto Sans', 'PingFang SC', 'Microsoft YaHei', sans-serif; background: #f4f8fc; color: #1f2937; line-height: 1.7; transition: background 0.3s ease, color 0.3s ease; overflow-x: hidden; }
body.dark { background: #0b1220; color: #e2e8f0; }

/* 链接 */
a { color: #0b5e8a; text-decoration: none; transition: color 0.2s ease, opacity 0.2s ease; }
a:hover { color: #0d7ab0; text-decoration: underline; }
body.dark a { color: #7cc4e8; }
body.dark a:hover { color: #a5d8f5; }

/* 容器 */
.container { max-width: 1280px; margin: 0 auto; padding: 0 24px; width: 100%; }

/* ========== 头部导航 ========== */
.site-header { position: sticky; top: 0; z-index: 1000; background: rgba(255, 255, 255, 0.82); backdrop-filter: blur(16px) saturate(180%); -webkit-backdrop-filter: blur(16px) saturate(180%); border-bottom: 1px solid rgba(120, 160, 190, 0.15); box-shadow: 0 4px 24px rgba(0, 0, 0, 0.04); transition: background 0.3s ease, border-color 0.3s ease; }
body.dark .site-header { background: rgba(13, 25, 40, 0.85); border-bottom-color: rgba(60, 90, 120, 0.2); box-shadow: 0 4px 24px rgba(0, 0, 0, 0.2); }
.nav-wrap { display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 20px; }
.logo { font-size: 1.7rem; font-weight: 800; letter-spacing: 1px; color: #0f3d5e; display: flex; align-items: center; gap: 8px; background: linear-gradient(135deg, #0b3b5a, #1a6a9a); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; white-space: nowrap; }
body.dark .logo { background: linear-gradient(135deg, #e0f0ff, #ffffff); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.nav-links { display: flex; gap: 8px; list-style: none; }
.nav-links a { font-weight: 600; color: #1f3b4d; padding: 8px 16px; border-radius: 30px; transition: all 0.25s ease; position: relative; }
body.dark .nav-links a { color: #d1e3f0; }
.nav-links a:hover { color: #0077b6; background: rgba(0, 119, 182, 0.06); text-decoration: none; transform: translateY(-2px); }
body.dark .nav-links a:hover { color: #a5d8f5; background: rgba(120, 200, 255, 0.1); }
.nav-ctrl { display: flex; gap: 10px; align-items: center; }
.icon-btn { background: #eef2f7; border: none; padding: 8px 14px; border-radius: 30px; font-size: 1.1rem; cursor: pointer; color: #1e2f3d; transition: all 0.25s ease; display: flex; align-items: center; justify-content: center; box-shadow: 0 2px 8px rgba(0,0,0,0.03); }
body.dark .icon-btn { background: #1e3246; color: #e2e8f0; box-shadow: 0 2px 8px rgba(0,0,0,0.2); }
.icon-btn:hover { background: #dbe2ea; transform: translateY(-2px) rotate(3deg); box-shadow: 0 4px 12px rgba(0,0,0,0.08); }
body.dark .icon-btn:hover { background: #2a4460; }

/* ========== Hero 首屏 ========== */
.hero { background: linear-gradient(145deg, #d9eaf5 0%, #b8dcef 50%, #a5d4e8 100%); padding: 72px 0 64px; position: relative; overflow: hidden; }
.hero::before { content: ''; position: absolute; top: -40%; right: -10%; width: 500px; height: 500px; background: radial-gradient(circle, rgba(255,255,255,0.35) 0%, transparent 70%); border-radius: 50%; pointer-events: none; }
body.dark .hero { background: linear-gradient(145deg, #0a1e2e 0%, #0e2b42 50%, #123a55 100%); }
.hero::after { content: ''; position: absolute; bottom: 0; left: 0; width: 100%; height: 40px; background: linear-gradient(to top, rgba(0,0,0,0.03), transparent); }
.hero-grid { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 48px; align-items: center; position: relative; z-index: 2; }
@media (max-width: 800px) { .hero-grid { grid-template-columns: 1fr; gap: 32px; } }
.hero h1 { font-size: clamp(2.2rem, 5vw, 3.2rem); line-height: 1.15; color: #0a2c40; margin-bottom: 24px; font-weight: 800; letter-spacing: -0.02em; animation: fadeInUp 0.8s ease both; }
body.dark .hero h1 { color: #ffffff; }
.hero p { font-size: 1.2rem; color: #1e3a4b; max-width: 640px; margin-bottom: 28px; font-weight: 400; animation: fadeInUp 0.8s ease 0.15s both; }
body.dark .hero p { color: #d5e5f0; }
.btn-group { display: flex; gap: 16px; flex-wrap: wrap; animation: fadeInUp 0.8s ease 0.3s both; }
.btn { display: inline-block; background: linear-gradient(135deg, #0b3b5a, #0d4a70); color: #ffffff !important; padding: 12px 32px; border-radius: 50px; font-weight: 700; text-decoration: none; border: none; cursor: pointer; transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); box-shadow: 0 8px 20px rgba(11, 59, 90, 0.2); text-align: center; }
.btn:hover { background: linear-gradient(135deg, #0d4a70, #0f5f8a); transform: translateY(-4px) scale(1.02); box-shadow: 0 12px 28px rgba(11, 59, 90, 0.3); text-decoration: none; }
.btn-outline { background: transparent; color: #0b3b5a !important; border: 2px solid #0b3b5a; box-shadow: none; }
body.dark .btn-outline { color: #b3daf0 !important; border-color: #b3daf0; }
.btn-outline:hover { background: rgba(11, 59, 90, 0.1); transform: translateY(-4px); box-shadow: 0 8px 20px rgba(0,0,0,0.1); }
.hero-card { background: rgba(255, 255, 255, 0.4); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-radius: 28px; padding: 24px; border: 1px solid rgba(255, 255, 255, 0.4); box-shadow: 0 20px 60px rgba(0, 0, 0, 0.08); animation: fadeInUp 0.8s ease 0.45s both; }
body.dark .hero-card { background: rgba(10, 26, 40, 0.6); border-color: rgba(255, 255, 255, 0.1); }
.hero-card svg { width: 100%; height: auto; border-radius: 16px; }

/* ========== 通用区块 ========== */
.section { padding: 72px 0; position: relative; }
.section-title { font-size: clamp(1.8rem, 3.5vw, 2.4rem); margin-bottom: 32px; color: #0f2c3f; position: relative; padding-bottom: 16px; font-weight: 800; letter-spacing: -0.01em; }
body.dark .section-title { color: #f1f9ff; }
.section-title::after { content: ''; position: absolute; bottom: 0; left: 0; width: 72px; height: 5px; background: linear-gradient(90deg, #0b6a96, #3aa7d6); border-radius: 4px; }

/* ========== 卡片网格 ========== */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
@media (max-width: 700px) { .grid-2 { grid-template-columns: 1fr; gap: 24px; } }

.card { background: #ffffff; border-radius: 20px; padding: 28px; box-shadow: 0 8px 24px rgba(0, 0, 0, 0.04); border: 1px solid #dce7f0; transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1); position: relative; overflow: hidden; }
body.dark .card { background: #101e30; border-color: #2b4a66; box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2); }
.card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: linear-gradient(90deg, #0b6a96, #3aa7d6); opacity: 0; transition: opacity 0.3s ease; }
.card:hover::before { opacity: 1; }
.card:hover { transform: translateY(-6px); box-shadow: 0 16px 40px rgba(0, 0, 0, 0.08); border-color: #b8d4e8; }
body.dark .card:hover { box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3); border-color: #3a6480; }
.card h3 { color: #0e3a52; margin-bottom: 16px; font-size: 1.4rem; font-weight: 700; }
body.dark .card h3 { color: #e2effc; }
.card p, .card li { color: #2c3e50; }
body.dark .card p, body.dark .card li { color: #d1dce8; }

.list-style { list-style: none; }
.list-style li { padding: 8px 0; border-bottom: 1px dashed #d0deea; transition: padding-left 0.2s ease; }
body.dark .list-style li { border-bottom-color: #2a405a; }
.list-style li:hover { padding-left: 8px; }

/* ========== 文章卡片 ========== */
.article-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 28px; }
.article-item { background: #ffffff; border-radius: 20px; padding: 24px; border: 1px solid #d8e4ef; transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1); position: relative; overflow: hidden; }
body.dark .article-item { background: #101e30; border-color: #2b4a66; }
.article-item::after { content: ''; position: absolute; bottom: 0; left: 0; width: 100%; height: 3px; background: linear-gradient(90deg, #0b6a96, #3aa7d6); transform: scaleX(0); transform-origin: left; transition: transform 0.4s ease; }
.article-item:hover::after { transform: scaleX(1); }
.article-item:hover { transform: translateY(-6px) scale(1.01); box-shadow: 0 16px 40px rgba(0, 0, 0, 0.06); border-color: #0b6a96; }
body.dark .article-item:hover { box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3); border-color: #3a7ab0; }
.article-item h3 { color: #0c2d44; margin-bottom: 12px; font-size: 1.2rem; font-weight: 700; line-height: 1.4; }
body.dark .article-item h3 { color: #e6f1fb; }
.article-item .date { color: #5f748a; font-size: 0.85rem; display: inline-block; margin-bottom: 8px; background: rgba(100, 150, 180, 0.1); padding: 2px 10px; border-radius: 20px; }
body.dark .article-item .date { color: #9bb4cc; background: rgba(150, 200, 255, 0.1); }
.article-item p { color: #2d3f51; font-size: 0.95rem; }
body.dark .article-item p { color: #cbd5e1; }
.read-more { color: #0a6791; font-weight: 700; display: inline-block; margin-top: 12px; transition: all 0.2s ease; }
.read-more:hover { color: #0b3b5a; transform: translateX(4px); text-decoration: none; }

/* ========== FAQ ========== */
.faq-item { background: #ffffff; border-radius: 18px; padding: 20px 28px; margin-bottom: 16px; border: 1px solid #d3e2ee; transition: all 0.3s ease; box-shadow: 0 4px 12px rgba(0,0,0,0.02); }
body.dark .faq-item { background: #0f1e30; border-color: #2c4a66; }
.faq-item:hover { border-color: #0b6a96; box-shadow: 0 8px 24px rgba(0,0,0,0.06); }
body.dark .faq-item:hover { border-color: #3a7ab0; }
.faq-question { font-weight: 700; font-size: 1.15rem; color: #123a52; cursor: pointer; display: flex; justify-content: space-between; align-items: center; transition: color 0.2s; }
body.dark .faq-question { color: #d9ebf7; }
.faq-question:hover { color: #0b6a96; }
.faq-question span { font-size: 1.6rem; font-weight: 300; transition: transform 0.3s ease; display: inline-block; }
.faq-item.active .faq-question span { transform: rotate(45deg); }
.faq-answer { margin-top: 12px; color: #263b4d; display: none; animation: fadeIn 0.3s ease; line-height: 1.8; }
body.dark .faq-answer { color: #cbd9e6; }

/* ========== HowTo ========== */
.howto-steps { counter-reset: step; }
.howto-step { background: #ffffff; padding: 20px 24px; border-radius: 18px; margin-bottom: 14px; border-left: 6px solid #0b6a96; transition: all 0.3s ease; box-shadow: 0 4px 12px rgba(0,0,0,0.02); }
body.dark .howto-step { background: #101e30; border-left-color: #3b9bd0; }
.howto-step:hover { transform: translateX(8px); box-shadow: 0 8px 24px rgba(0,0,0,0.06); }
.howto-step h4 { color: #0c3550; font-size: 1.1rem; margin-bottom: 8px; }
body.dark .howto-step h4 { color: #dceeff; }

/* ========== 表格 ========== */
table { width: 100%; border-collapse: separate; border-spacing: 0; border-radius: 12px; overflow: hidden; }
td, th { padding: 14px 16px; border-bottom: 1px solid #c0d4e2; text-align: left; }
body.dark td, body.dark th { border-bottom-color: #2e4b66; }
th { background: linear-gradient(135deg, #e5eef8, #d4e6f2); font-weight: 700; }
body.dark th { background: linear-gradient(135deg, #1e3b54, #245070); color: #e0eefc; }
tr { transition: background 0.2s ease; }
tr:hover td { background: rgba(11, 106, 150, 0.04); }
body.dark tr:hover td { background: rgba(100, 200, 255, 0.05); }

/* ========== 页脚 ========== */
.site-footer { background: linear-gradient(145deg, #0f2536, #102433); color: #cbdbea; padding: 56px 0 24px; margin-top: 48px; position: relative; }
body.dark .site-footer { background: linear-gradient(145deg, #060d18, #0a1520); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 32px; }
@media (max-width: 700px) { .footer-grid { grid-template-columns: 1fr; gap: 24px; } }
.site-footer h4 { color: #ffffff; margin-bottom: 18px; font-size: 1.1rem; font-weight: 700; }
.site-footer a { color: #b0cfe0; transition: all 0.2s ease; }
.site-footer a:hover { color: #ffffff; text-decoration: none; padding-left: 4px; }
.copyright { margin-top: 48px; border-top: 1px solid #2c4a63; padding-top: 24px; font-size: 0.9rem; color: #a3bfd4; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; }

/* ========== 徽章 ========== */
.badge { background: linear-gradient(135deg, #e8f0fa, #d4e6f2); color: #0b3b5a !important; padding: 4px 14px; border-radius: 30px; font-size: 0.8rem; font-weight: 600; display: inline-block; transition: all 0.2s; }
body.dark .badge { background: linear-gradient(135deg, #1b3b57, #1e4460); color: #d4e9f7 !important; }
.badge:hover { transform: scale(1.05); }

/* ========== 动画关键帧 ========== */
@keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }

/* ========== 滚动动画 ========== */
.section { opacity: 1; }
@media (prefers-reduced-motion: no-preference) {
  .card, .article-item, .faq-item, .howto-step { opacity: 0; animation: fadeInUp 0.6s ease forwards; }
  .card:nth-child(1), .article-item:nth-child(1), .faq-item:nth-child(1), .howto-step:nth-child(1) { animation-delay: 0.05s; }
  .card:nth-child(2), .article-item:nth-child(2), .faq-item:nth-child(2), .howto-step:nth-child(2) { animation-delay: 0.1s; }
  .card:nth-child(3), .article-item:nth-child(3), .faq-item:nth-child(3), .howto-step:nth-child(3) { animation-delay: 0.15s; }
  .card:nth-child(4), .article-item:nth-child(4), .faq-item:nth-child(4), .howto-step:nth-child(4) { animation-delay: 0.2s; }
  .card:nth-child(5), .article-item:nth-child(5), .faq-item:nth-child(5), .howto-step:nth-child(5) { animation-delay: 0.25s; }
  .card:nth-child(6), .article-item:nth-child(6), .faq-item:nth-child(6), .howto-step:nth-child(6) { animation-delay: 0.3s; }
  .card:nth-child(7), .article-item:nth-child(7), .faq-item:nth-child(7), .howto-step:nth-child(7) { animation-delay: 0.35s; }
  .card:nth-child(8), .article-item:nth-child(8), .faq-item:nth-child(8), .howto-step:nth-child(8) { animation-delay: 0.4s; }
  .card:nth-child(9), .article-item:nth-child(9), .faq-item:nth-child(9), .howto-step:nth-child(9) { animation-delay: 0.45s; }
  .card:nth-child(10), .article-item:nth-child(10), .faq-item:nth-child(10), .howto-step:nth-child(10) { animation-delay: 0.5s; }
  .card:nth-child(11), .article-item:nth-child(11), .faq-item:nth-child(11), .howto-step:nth-child(11) { animation-delay: 0.55s; }
  .card:nth-child(12), .article-item:nth-child(12), .faq-item:nth-child(12), .howto-step:nth-child(12) { animation-delay: 0.6s; }
  .card:nth-child(13), .article-item:nth-child(13), .faq-item:nth-child(13), .howto-step:nth-child(13) { animation-delay: 0.65s; }
  .card:nth-child(14), .article-item:nth-child(14), .faq-item:nth-child(14), .howto-step:nth-child(14) { animation-delay: 0.7s; }
  .card:nth-child(15), .article-item:nth-child(15), .faq-item:nth-child(15), .howto-step:nth-child(15) { animation-delay: 0.75s; }
}

/* ========== 响应式细节 ========== */
@media (max-width: 768px) {
  .nav-wrap { flex-wrap: wrap; height: auto; padding: 12px 0; gap: 12px; }
  .nav-links { order: 3; width: 100%; justify-content: center; flex-wrap: wrap; gap: 4px; }
  .nav-links a { padding: 6px 14px; font-size: 0.9rem; }
  .logo { font-size: 1.4rem; }
  .section { padding: 56px 0; }
  .hero { padding: 48px 0 40px; }
  .hero h1 { font-size: 2rem; }
  .hero p { font-size: 1.05rem; }
  .btn { padding: 10px 24px; font-size: 0.95rem; }
  .container { padding: 0 16px; }
  .article-grid { grid-template-columns: 1fr; }
  .faq-item { padding: 16px 20px; }
  .howto-step { padding: 16px; }
  .card { padding: 20px; }
  .site-footer { padding: 40px 0 20px; }
  .copyright { flex-direction: column; text-align: center; }
}

/* 超小屏幕 */
@media (max-width: 400px) {
  .nav-ctrl { gap: 6px; }
  .icon-btn { padding: 6px 10px; }
  .btn-group { flex-direction: column; width: 100%; }
  .btn { width: 100%; text-align: center; }
}

/* ========== 额外优化 ========== */
img, svg { max-width: 100%; height: auto; display: block; }
::selection { background: rgba(11, 106, 150, 0.2); }
body.dark ::selection { background: rgba(100, 200, 255, 0.3); }
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: linear-gradient(135deg, #b0cfe0, #8ab0c8); border-radius: 10px; }
body.dark ::-webkit-scrollbar-thumb { background: linear-gradient(135deg, #2a4460, #1e3246); }
.hero-card svg text { font-family: inherit; }
```