:root{
  --bg-primary:#ffffff;
  --bg-secondary:#f8f9fc;
  --bg-card:#ffffff;
  --bg-nav:rgba(26,26,46,0.72);
  --bg-footer:#12121f;
  --bg-banner:linear-gradient(135deg,#1a1a2e 0%,#16213e 50%,#0f3460 100%);
  --text-primary:#17202A;
  --text-secondary:#334155;
  --text-muted:#4b5563;
  --text-light:#1F2937;
  --text-nav:#f1f5f9;
  --text-footer:#cbd5e1;
  --text-heading:#0f172a;
  --brand:#e94560;
  --brand-dark:#c81e3f;
  --brand-light:#fce4ec;
  --accent:#0f3460;
  --border:#e2e8f0;
  --shadow:0 2px 12px rgba(0,0,0,0.08);
  --link:#1d4ed8;
  --btn-text:#ffffff;
  --tag-bg:#fce4ec;
  --tag-text:#9b1c2e;
  --faq-q:#0f172a;
  --faq-a:#243447;
  --input-border:#cbd5e1;
  --input-text:#17202A;
  --placeholder:#6b7280;
  --table-head:#1a1a2e;
  --table-head-text:#ffffff;
  --table-row-alt:#f8f9fc;
  --table-text:#1F2937;
  --code-bg:#f1f5f9;
  --code-text:#0f172a;
  --glass-bg:rgba(255,255,255,0.65);
  --glass-border:rgba(255,255,255,0.35);
  --glass-shadow:0 8px 32px rgba(31,38,135,0.12);
}
[data-theme="dark"]{
  --bg-primary:#0f0f1a;
  --bg-secondary:#1a1a2e;
  --bg-card:#1e1e32;
  --bg-nav:rgba(10,10,20,0.72);
  --bg-footer:#07070f;
  --bg-banner:linear-gradient(135deg,#0a0a14 0%,#16213e 50%,#0f3460 100%);
  --text-primary:#E5E7EB;
  --text-secondary:#E2E8F0;
  --text-muted:#94a3b8;
  --text-light:#F1F5F9;
  --text-nav:#F8FAFC;
  --text-footer:#E2E8F0;
  --text-heading:#FFFFFF;
  --brand:#f06292;
  --brand-dark:#e94560;
  --brand-light:#2a1a2e;
  --accent:#64b5f6;
  --border:#334155;
  --shadow:0 2px 12px rgba(0,0,0,0.4);
  --link:#93c5fd;
  --btn-text:#ffffff;
  --tag-bg:#2a1a2e;
  --tag-text:#f8bbd0;
  --faq-q:#F8FAFC;
  --faq-a:#E2E8F0;
  --input-border:#475569;
  --input-text:#E5E7EB;
  --placeholder:#94a3b8;
  --table-head:#1e1e32;
  --table-head-text:#F8FAFC;
  --table-row-alt:#1a1a2e;
  --table-text:#E2E8F0;
  --code-bg:#1e1e32;
  --code-text:#E5E7EB;
  --glass-bg:rgba(30,30,50,0.6);
  --glass-border:rgba(148,163,184,0.2);
  --glass-shadow:0 8px 32px rgba(0,0,0,0.5);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Segoe UI",Roboto,sans-serif;
  background:var(--bg-primary);
  color:var(--text-primary);
  line-height:1.8;
  font-size:16px;
  transition:background .3s,color .3s;
  overflow-x:hidden;
}
a{color:var(--link);text-decoration:none;transition:color .2s}
a:hover{color:var(--brand);text-decoration:underline}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
img,svg{max-width:100%;height:auto;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
h1,h2,h3,h4{color:var(--text-heading);line-height:1.4;font-weight:700}
h1{font-size:2.2rem;margin-bottom:1rem}
h2{font-size:1.7rem;margin-bottom:1rem;padding-bottom:.5rem;border-bottom:3px solid var(--brand)}
h3{font-size:1.3rem;margin-bottom:.8rem;color:var(--text-heading)}
h4{font-size:1.1rem;margin-bottom:.6rem;color:var(--text-secondary)}
p{margin-bottom:1rem;color:var(--text-primary)}
ul,ol{margin-bottom:1rem;padding-left:1.5rem}
li{margin-bottom:.4rem;color:var(--text-primary)}
.navbar{
  position:sticky;top:0;z-index:1000;
  background:var(--bg-nav);
  backdrop-filter:blur(16px) saturate(180%);
  -webkit-backdrop-filter:blur(16px) saturate(180%);
  border-bottom:1px solid var(--glass-border);
  box-shadow:0 2px 8px rgba(0,0,0,0.2);
  transition:background .3s;
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;max-width:1200px;margin:0 auto;padding:0 20px;height:64px}
.nav-logo{display:flex;align-items:center;gap:10px;color:var(--text-nav);font-size:1.3rem;font-weight:700;text-decoration:none}
.nav-logo:hover{color:var(--brand);text-decoration:none}
.nav-logo svg{width:36px;height:36px;transition:transform .3s}
.nav-logo:hover svg{transform:rotate(-6deg) scale(1.05)}
.nav-menu{display:flex;list-style:none;gap:4px;margin:0;padding:0}
.nav-menu a{color:var(--text-nav);padding:8px 14px;border-radius:6px;font-size:.95rem;font-weight:500;text-decoration:none;transition:background .2s,color .2s,transform .2s}
.nav-menu a:hover,.nav-menu a:focus{background:rgba(233,69,96,0.2);color:#fff;text-decoration:none;transform:translateY(-1px)}
.nav-actions{display:flex;align-items:center;gap:10px}
.search-box{display:flex;align-items:center;background:rgba(255,255,255,0.12);border-radius:20px;padding:4px 12px;border:1px solid rgba(255,255,255,0.15);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);transition:border-color .2s,background .2s}
.search-box:focus-within{border-color:var(--brand);background:rgba(255,255,255,0.18)}
.search-box input{background:transparent;border:none;outline:none;color:var(--text-nav);font-size:.9rem;width:140px;padding:4px}
.search-box input::placeholder{color:#cbd5e1}
.search-box button{background:transparent;border:none;cursor:pointer;color:var(--text-nav);padding:2px;display:flex;transition:color .2s}
.search-box button:hover{color:var(--brand)}
.theme-toggle{background:rgba(255,255,255,0.12);border:1px solid rgba(255,255,255,0.15);border-radius:50%;width:36px;height:36px;cursor:pointer;display:flex;align-items:center;justify-content:center;color:var(--text-nav);transition:background .2s,transform .3s}
.theme-toggle:hover{background:rgba(233,69,96,0.3);transform:rotate(20deg)}
.mobile-menu-btn{display:none;background:transparent;border:none;color:var(--text-nav);cursor:pointer;padding:8px;transition:color .2s}
.mobile-menu-btn:hover{color:var(--brand)}
.banner{position:relative;background:var(--bg-banner);color:#fff;padding:60px 0;overflow:hidden;min-height:380px}
.banner-slide{display:none;animation:fadeIn .6s ease}
.banner-slide.active{display:block}
@keyframes fadeIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}
.banner-content{max-width:1200px;margin:0 auto;padding:0 20px;position:relative;z-index:2}
.banner h1{color:#ffffff;font-size:2.4rem;margin-bottom:1rem;text-shadow:0 2px 8px rgba(0,0,0,0.4)}
.banner p{color:#e2e8f0;font-size:1.1rem;max-width:700px;margin-bottom:1.5rem;text-shadow:0 1px 4px rgba(0,0,0,0.3)}
.banner-btns{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:6px;padding:12px 28px;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;border:none;text-decoration:none;transition:all .25s cubic-bezier(.4,0,.2,1);position:relative;overflow:hidden}
.btn-primary{background:var(--brand);color:var(--btn-text);box-shadow:0 4px 14px rgba(233,69,96,0.35)}
.btn-primary:hover{background:var(--brand-dark);color:#fff;text-decoration:none;transform:translateY(-2px);box-shadow:0 6px 20px rgba(233,69,96,0.5)}
.btn-outline{background:rgba(255,255,255,0.08);color:#fff;border:2px solid rgba(255,255,255,0.6);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}
.btn-outline:hover{background:rgba(255,255,255,0.18);color:#fff;text-decoration:none;border-color:#fff;transform:translateY(-2px)}
.banner-dots{position:absolute;bottom:20px;left:50%;transform:translateX(-50%);display:flex;gap:8px;z-index:3}
.banner-dots span{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,0.4);cursor:pointer;transition:background .3s,width .3s,border-radius .3s}
.banner-dots span.active{background:var(--brand);width:24px;border-radius:5px}
.banner-overlay{position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(90deg,rgba(10,10,20,0.75) 0%,rgba(10,10,20,0.4) 60%,rgba(10,10,20,0.2) 100%);z-index:1}
.breadcrumb{background:var(--bg-secondary);padding:12px 0;font-size:.9rem;border-bottom:1px solid var(--border)}
.breadcrumb-inner{max-width:1200px;margin:0 auto;padding:0 20px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.breadcrumb a{color:var(--link)}
.breadcrumb span{color:var(--text-muted)}
.section{padding:50px 0}
.section-alt{background:var(--bg-secondary)}
.section-header{text-align:center;margin-bottom:36px}
.section-header p{color:var(--text-secondary);max-width:700px;margin:0 auto}
.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px}
.card{background:var(--bg-card);border:1px solid var(--border);border-radius:16px;padding:24px;box-shadow:var(--shadow);transition:transform .3s cubic-bezier(.4,0,.2,1),box-shadow .3s,border-color .3s;position:relative;overflow:hidden}
.card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--brand),var(--accent));transform:scaleX(0);transform-origin:left;transition:transform .35s ease}
.card:hover{transform:translateY(-6px);box-shadow:0 12px 28px rgba(0,0,0,0.14);border-color:var(--brand)}
.card:hover::before{transform:scaleX(1)}
.card h3{margin-bottom:.6rem}
.card p{color:var(--text-secondary);font-size:.95rem;margin-bottom:0}
.card-icon{width:48px;height:48px;margin-bottom:12px;transition:transform .3s}
.card:hover .card-icon{transform:scale(1.08) rotate(-3deg)}
.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:24px;text-align:center}
.stat-item{background:var(--bg-card);border:1px solid var(--border);border-radius:16px;padding:28px 16px;box-shadow:var(--shadow);transition:transform .3s,box-shadow .3s}
.stat-item:hover{transform:translateY(-4px);box-shadow:0 10px 24px rgba(0,0,0,0.12)}
.stat-number{font-size:2.2rem;font-weight:800;color:var(--brand);line-height:1.2;font-variant-numeric:tabular-nums}
.stat-label{color:var(--text-secondary);font-size:.95rem;margin-top:6px}
.article-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:24px}
.article-card{background:var(--bg-card);border:1px solid var(--border);border-radius:16px;padding:22px;box-shadow:var(--shadow);transition:transform .3s cubic-bezier(.4,0,.2,1),box-shadow .3s,border-color .3s;display:flex;flex-direction:column}
.article-card:hover{transform:translateY(-6px);box-shadow:0 12px 28px rgba(0,0,0,0.14);border-color:var(--brand)}
.article-card h3{font-size:1.15rem;margin-bottom:.5rem;transition:color .2s}
.article-card:hover h3{color:var(--brand)}
.article-meta{font-size:.85rem;color:var(--text-muted);margin-bottom:.6rem;display:flex;gap:12px;flex-wrap:wrap}
.article-card p{color:var(--text-secondary);font-size:.93rem;flex:1;margin-bottom:.8rem}
.article-link{color:var(--link);font-weight:600;font-size:.95rem;transition:color .2s,transform .2s;display:inline-block}
.article-link:hover{color:var(--brand);transform:translateX(4px)}
.faq-item{background:var(--bg-card);border:1px solid var(--border);border-radius:12px;margin-bottom:12px;overflow:hidden;box-shadow:var(--shadow);transition:border-color .3s,box-shadow .3s}
.faq-item:hover{border-color:var(--brand)}
.faq-item.open{border-color:var(--brand);box-shadow:0 6px 20px rgba(233,69,96,0.12)}
.faq-question{width:100%;text-align:left;background:var(--bg-card);border:none;padding:18px 22px;font-size:1.05rem;font-weight:600;color:var(--faq-q);cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:12px;transition:background .2s}
.faq-question:hover{background:var(--bg-secondary)}
.faq-question .arrow{transition:transform .3s;flex-shrink:0;color:var(--brand)}
.faq-item.open .faq-question .arrow{transform:rotate(180deg)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .4s ease}
.faq-item.open .faq-answer{max-height:600px}
.faq-answer-inner{padding:0 22px 20px;color:var(--faq-a);font-size:.95rem;line-height:1.8}
.howto-step{display:flex;gap:18px;margin-bottom:24px;align-items:flex-start;transition:transform .3s}
.howto-step:hover{transform:translateX(6px)}
.howto-num{flex-shrink:0;width:44px;height:44px;border-radius:50%;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.2rem;font-weight:700;box-shadow:0 4px 12px rgba(233,69,96,0.35);transition:transform .3s,box-shadow .3s}
.howto-step:hover .howto-num{transform:scale(1.1);box-shadow:0 6px 18px rgba(233,69,96,0.5)}
.howto-content h4{color:var(--text-heading);margin-bottom:.3rem}
.howto-content p{color:var(--text-secondary);font-size:.95rem;margin-bottom:0}
.table-wrap{overflow-x:auto;margin-bottom:1.5rem;border-radius:12px;border:1px solid var(--border);box-shadow:var(--shadow)}
table{width:100%;border-collapse:collapse;font-size:.95rem}
th{background:var(--table-head);color:var(--table-head-text);padding:12px 16px;text-align:left;font-weight:600;white-space:nowrap}
td{padding:12px 16px;border-bottom:1px solid var(--border);color:var(--table-text)}
tr:nth-child(even) td{background:var(--table-row-alt)}
tr:hover td{background:var(--brand-light);transition:background .2s}
.tag{display:inline-block;background:var(--tag-bg);color:var(--tag-text);padding:4px 12px;border-radius:16px;font-size:.85rem;font-weight:500;margin:0 6px 6px 0;transition:transform .2s,box-shadow .2s}
.tag:hover{transform:translateY(-2px);box-shadow:0 4px 10px rgba(233,69,96,0.25)}
.author-box{background:var(--glass-bg);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--glass-border);border-radius:16px;padding:24px;display:flex;gap:20px;align-items:flex-start;margin-top:24px;box-shadow:var(--glass-shadow)}
.author-avatar{width:64px;height:64px;border-radius:50%;flex-shrink:0;transition:transform .3s}
.author-box:hover .author-avatar{transform:scale(1.06)}
.author-info h4{color:var(--text-heading);margin-bottom:.3rem}
.author-info p{color:var(--text-secondary);font-size:.9rem;margin-bottom:.3rem}
.contact-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:24px}
.contact-item{background:var(--glass-bg);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border:1px solid var(--glass-border);border-radius:16px;padding:24px;text-align:center;box-shadow:var(--glass-shadow);transition:transform .3s,box-shadow .3s,border-color .3s}
.contact-item:hover{transform:translateY(-6px);box-shadow:0 12px 28px rgba(233,69,96,0.18);border-color:var(--brand)}
.contact-item h4{color:var(--text-heading);margin-bottom:.4rem}
.contact-item p{color:var(--text-secondary);font-size:.95rem;margin-bottom:0;word-break:break-all}
.footer{background:var(--bg-footer);color:var(--text-footer);padding:50px 0 20px;transition:background .3s}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:30px;margin-bottom:30px}
.footer h4{color:#fff;font-size:1.05rem;margin-bottom:1rem}
.footer ul{list-style:none;padding:0}
.footer li{margin-bottom:.5rem}
.footer a{color:var(--text-footer);font-size:.9rem;transition:color .2s,padding-left .2s}
.footer a:hover{color:var(--brand);text-decoration:none;padding-left:4px}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.1);padding-top:20px;text-align:center;font-size:.85rem;color:var(--text-footer)}
.footer-bottom p{color:var(--text-footer);margin-bottom:.4rem}
.footer-bottom a{color:var(--text-footer)}
.footer-bottom a:hover{color:var(--brand)}
.back-to-top{position:fixed;bottom:30px;right:30px;width:46px;height:46px;border-radius:50%;background:var(--brand);color:#fff;border:none;cursor:pointer;display:none;align-items:center;justify-content:center;box-shadow:0 4px 12px rgba(233,69,96,0.4);z-index:999;transition:all .3s cubic-bezier(.4,0,.2,1)}
.back-to-top:hover{background:var(--brand-dark);transform:translateY(-4px) scale(1.06);box-shadow:0 8px 20px rgba(233,69,96,0.55)}
.back-to-top.show{display:flex}
.scroll-anim{opacity:0;transform:translateY(24px);transition:opacity .7s cubic-bezier(.4,0,.2,1),transform .7s cubic-bezier(.4,0,.2,1)}
.scroll-anim.visible{opacity:1;transform:translateY(0)}
.note-box{background:var(--glass-bg);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-left:4px solid var(--brand);padding:16px 20px;border-radius:0 12px 12px 0;margin-bottom:1.5rem;box-shadow:var(--glass-shadow);transition:transform .3s,box-shadow .3s}
.note-box:hover{transform:translateX(4px);box-shadow:0 8px 22px rgba(233,69,96,0.15)}
.note-box p{color:var(--text-secondary);margin-bottom:0;font-size:.95rem}
.tag-list{margin-bottom:1.5rem}
@media(max-width:900px){
  .nav-menu{display:none;position:absolute;top:64px;left:0;right:0;background:var(--bg-nav);backdrop-filter:blur(20px) saturate(180%);-webkit-backdrop-filter:blur(20px) saturate(180%);flex-direction:column;padding:12px 20px;gap:4px;box-shadow:0 8px 16px rgba(0,0,0,0.2);border-bottom:1px solid var(--glass-border)}
  .nav-menu.open{display:flex}
  .nav-menu a{padding:10px 14px}
  .mobile-menu-btn{display:flex}
  .search-box{display:none}
  .banner h1{font-size:1.7rem}
  .banner p{font-size:1rem}
  h1{font-size:1.7rem}
  h2{font-size:1.4rem}
  .section{padding:36px 0}
  .card-grid,.article-list,.contact-grid{grid-template-columns:1fr}
}
@media(max-width:600px){
  .banner{padding:40px 0;min-height:320px}
  .banner h1{font-size:1.4rem}
  .banner p{font-size:.95rem}
  .btn{padding:10px 20px;font-size:.9rem}
  .author-box{flex-direction:column;align-items:center;text-align:center}
  .howto-step{gap:12px}
  .howto-num{width:36px;height:36px;font-size:1rem}
  .stat-number{font-size:1.8rem}
  .back-to-top{bottom:20px;right:20px;width:42px;height:42px}
}
@media(prefers-reduced-motion:reduce){
  *{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
  .scroll-anim{opacity:1;transform:none}
}