:root{--td-primary:#ff5722;--td-primary-dark:#e64a19;--td-primary-light:#ff9800;--td-accent:#ffc107;--td-bg:#fafafa;--td-bg-alt:#fff;--td-surface:#fff;--td-surface-glass:rgba(255,255,255,.75);--td-text:#333;--td-text-secondary:#555;--td-text-muted:#888;--td-text-faint:#999;--td-border:rgba(0,0,0,.08);--td-shadow-sm:0 2px 8px rgba(0,0,0,.06);--td-shadow-md:0 4px 16px rgba(0,0,0,.08);--td-shadow-lg:0 12px 32px rgba(0,0,0,.12);--td-shadow-glow:0 8px 28px rgba(255,87,34,.28);--td-radius-sm:8px;--td-radius:12px;--td-radius-lg:20px;--td-radius-full:999px;--td-transition:.35s cubic-bezier(.22,.61,.36,1);--td-header-h:64px;--td-gradient-banner:linear-gradient(135deg,#ff5722 0%,#ff7043 30%,#ff9800 70%,#ffc107 100%);--td-gradient-btn:linear-gradient(135deg,#ff5722,#ff9800);--td-gradient-text:linear-gradient(135deg,#ff5722,#ff9800);--td-font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif}
@media(prefers-color-scheme:dark){:root{--td-bg:#121212;--td-bg-alt:#1a1a1a;--td-surface:#1e1e1e;--td-surface-glass:rgba(30,30,30,.78);--td-text:#e8e8e8;--td-text-secondary:#b0b0b0;--td-text-muted:#8a8a8a;--td-text-faint:#6e6e6e;--td-border:rgba(255,255,255,.1);--td-shadow-sm:0 2px 8px rgba(0,0,0,.3);--td-shadow-md:0 4px 16px rgba(0,0,0,.4);--td-shadow-lg:0 12px 32px rgba(0,0,0,.5);--td-shadow-glow:0 8px 28px rgba(255,87,34,.35)}}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;scroll-padding-top:calc(var(--td-header-h) + 16px)}
body{font-family:var(--td-font);color:var(--td-text);background:var(--td-bg);line-height:1.8;font-size:16px;overflow-x:hidden;transition:background var(--td-transition),color var(--td-transition);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
body::before{content:"";position:fixed;top:0;left:0;width:100%;height:100%;background:radial-gradient(ellipse 80% 60% at 20% 0%,rgba(255,87,34,.06),transparent 60%),radial-gradient(ellipse 60% 50% at 90% 20%,rgba(255,152,0,.05),transparent 55%);pointer-events:none;z-index:0}
a{color:var(--td-primary);text-decoration:none;transition:color var(--td-transition)}
a:hover{color:var(--td-primary-dark)}
img{max-width:100%;height:auto;display:block}
::selection{background:rgba(255,87,34,.2);color:var(--td-primary-dark)}
.container{max-width:1200px;margin:0 auto;padding:0 20px;position:relative;z-index:1}
header{background:var(--td-surface-glass);backdrop-filter:blur(18px) saturate(1.6);-webkit-backdrop-filter:blur(18px) saturate(1.6);box-shadow:0 1px 0 var(--td-border),0 4px 20px rgba(0,0,0,.04);position:sticky;top:0;z-index:1000;transition:background var(--td-transition),box-shadow var(--td-transition)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;max-width:1200px;margin:0 auto}
.logo{font-size:24px;font-weight:800;background:var(--td-gradient-text);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;letter-spacing:-.5px;position:relative;transition:transform var(--td-transition)}
.logo:hover{transform:scale(1.04)}
.logo span{background:var(--td-gradient-text);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
nav ul{display:flex;list-style:none;gap:24px;align-items:center}
nav a{color:var(--td-text-secondary);font-size:15px;font-weight:500;position:relative;padding:4px 0;transition:color var(--td-transition)}
nav a::after{content:"";position:absolute;bottom:-2px;left:0;width:0;height:2px;background:var(--td-gradient-btn);border-radius:2px;transition:width var(--td-transition)}
nav a:hover{color:var(--td-primary)}
nav a:hover::after{width:100%}
.breadcrumb{font-size:14px;color:var(--td-text-faint);padding:16px 20px;max-width:1200px;margin:0 auto;position:relative;z-index:1}
.breadcrumb a{color:var(--td-text-faint)}
.breadcrumb a:hover{color:var(--td-primary)}
.breadcrumb span{margin:0 6px}
.banner{background:var(--td-gradient-banner);color:#fff;padding:100px 20px 90px;text-align:center;position:relative;overflow:hidden;isolation:isolate}
.banner::before{content:"";position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(circle at 30% 40%,rgba(255,255,255,.18),transparent 50%),radial-gradient(circle at 70% 60%,rgba(255,255,255,.12),transparent 45%);animation:tdBannerFloat 18s ease-in-out infinite;z-index:-1}
.banner::after{content:"";position:absolute;bottom:-40px;left:0;width:100%;height:80px;background:var(--td-bg);clip-path:ellipse(75% 100% at 50% 100%);z-index:0}
@keyframes tdBannerFloat{0%,100%{transform:translate(0,0) rotate(0deg)}33%{transform:translate(2%,-2%) rotate(1deg)}66%{transform:translate(-1%,1%) rotate(-1deg)}}
.banner h1{font-size:38px;margin-bottom:18px;font-weight:800;letter-spacing:-.5px;text-shadow:0 2px 12px rgba(0,0,0,.12);position:relative;z-index:1;animation:tdFadeUp .8s cubic-bezier(.22,.61,.36,1) both}
.banner p{font-size:18px;opacity:.96;max-width:800px;margin:0 auto;position:relative;z-index:1;line-height:1.9;animation:tdFadeUp .8s .15s cubic-bezier(.22,.61,.36,1) both}
.banner-btns{margin-top:32px;display:flex;gap:16px;justify-content:center;flex-wrap:wrap;position:relative;z-index:1;animation:tdFadeUp .8s .3s cubic-bezier(.22,.61,.36,1) both}
@keyframes tdFadeUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}
.btn{display:inline-block;padding:13px 34px;border-radius:var(--td-radius-full);font-size:16px;font-weight:600;transition:all var(--td-transition);cursor:pointer;position:relative;overflow:hidden;border:none;letter-spacing:.3px}
.btn::before{content:"";position:absolute;top:50%;left:50%;width:0;height:0;background:rgba(255,255,255,.3);border-radius:50%;transform:translate(-50%,-50%);transition:width .5s,height .5s}
.btn:hover::before{width:300px;height:300px}
.btn-primary{background:#fff;color:var(--td-primary);box-shadow:0 4px 16px rgba(0,0,0,.15)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 8px 28px rgba(0,0,0,.22);color:var(--td-primary-dark)}
.btn-outline{border:2px solid rgba(255,255,255,.85);color:#fff;background:rgba(255,255,255,.08);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}
.btn-outline:hover{background:rgba(255,255,255,.18);transform:translateY(-3px);border-color:#fff;color:#fff;box-shadow:0 8px 28px rgba(0,0,0,.18)}
section{padding:72px 0;position:relative;transition:background var(--td-transition)}
section:nth-child(even){background:var(--td-bg-alt)}
h2{font-size:30px;color:var(--td-text);margin-bottom:12px;text-align:center;font-weight:800;letter-spacing:-.5px;position:relative;display:inline-block;left:50%;transform:translateX(-50%)}
h2::after{content:"";display:block;width:56px;height:4px;background:var(--td-gradient-btn);border-radius:2px;margin:12px auto 0}
.section-desc{text-align:center;color:var(--td-text-muted);margin-bottom:48px;font-size:15px;letter-spacing:.2px}
h3{font-size:22px;color:var(--td-text);margin:40px 0 16px;font-weight:700;position:relative;padding-left:16px}
h3::before{content:"";position:absolute;left:0;top:4px;bottom:4px;width:4px;background:var(--td-gradient-btn);border-radius:2px}
h4{font-size:18px;color:var(--td-text-secondary);margin:28px 0 10px;font-weight:600}
p{margin-bottom:16px;color:var(--td-text-secondary);font-size:15px;line-height:1.9}
.grid{display:grid;gap:24px}
.grid-2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}
.grid-3{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.grid-4{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.card{background:var(--td-surface-glass);backdrop-filter:blur(12px) saturate(1.4);-webkit-backdrop-filter:blur(12px) saturate(1.4);border-radius:var(--td-radius);padding:28px;box-shadow:var(--td-shadow-sm);border:1px solid var(--td-border);transition:transform var(--td-transition),box-shadow var(--td-transition),border-color var(--td-transition),background var(--td-transition);position:relative;overflow:hidden}
.card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--td-gradient-btn);transform:scaleX(0);transform-origin:left;transition:transform var(--td-transition)}
.card:hover{transform:translateY(-6px);box-shadow:var(--td-shadow-glow);border-color:rgba(255,87,34,.2)}
.card:hover::before{transform:scaleX(1)}
.card h3{font-size:18px;margin:0 0 10px;padding-left:0;font-weight:700}
.card h3::before{display:none}
.card p{font-size:14px;color:var(--td-text-muted);margin:0;line-height:1.8}
.card .icon{font-size:34px;margin-bottom:14px;display:inline-block;transition:transform var(--td-transition)}
.card:hover .icon{transform:scale(1.15) rotate(-4deg)}
.article-list{display:grid;gap:20px}
.article-item{background:var(--td-surface-glass);backdrop-filter:blur(12px) saturate(1.4);-webkit-backdrop-filter:blur(12px) saturate(1.4);border-radius:var(--td-radius);padding:28px;box-shadow:var(--td-shadow-sm);border:1px solid var(--td-border);transition:transform var(--td-transition),box-shadow var(--td-transition),border-color var(--td-transition);position:relative;overflow:hidden}
.article-item::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--td-gradient-btn);transform:scaleY(0);transform-origin:top;transition:transform var(--td-transition)}
.article-item:hover{transform:translateX(6px);box-shadow:var(--td-shadow-md);border-color:rgba(255,87,34,.18)}
.article-item:hover::before{transform:scaleY(1)}
.article-item h3{font-size:18px;margin:0 0 8px;padding-left:0;font-weight:700}
.article-item h3::before{display:none}
.article-item .meta{font-size:13px;color:var(--td-text-faint);margin-bottom:10px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.article-item .meta::before{content:"📅";font-size:12px}
.article-item p{font-size:14px;color:var(--td-text-muted);margin:0;line-height:1.85}
.faq-item{border-bottom:1px solid var(--td-border);padding:20px 0;transition:background var(--td-transition)}
.faq-item:last-child{border-bottom:none}
.faq-item h4{font-size:16px;color:var(--td-text);margin:0 0 0;cursor:pointer;display:flex;align-items:center;gap:10px;font-weight:600;transition:color var(--td-transition);padding:4px 0}
.faq-item h4::before{content:"▸";color:var(--td-primary);font-size:14px;transition:transform var(--td-transition);display:inline-block;flex-shrink:0}
.faq-item h4:hover{color:var(--td-primary)}
.faq-item h4:hover::before{transform:translateX(3px)}
.faq-item p{font-size:14px;color:var(--td-text-muted);margin:10px 0 0 24px;line-height:1.85;transition:all var(--td-transition)}
.contact-info{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px}
.contact-item{background:var(--td-surface-glass);backdrop-filter:blur(12px) saturate(1.4);-webkit-backdrop-filter:blur(12px) saturate(1.4);border-radius:var(--td-radius);padding:28px 24px;text-align:center;box-shadow:var(--td-shadow-sm);border:1px solid var(--td-border);transition:transform var(--td-transition),box-shadow var(--td-transition),border-color var(--td-transition)}
.contact-item:hover{transform:translateY(-6px) scale(1.02);box-shadow:var(--td-shadow-glow);border-color:rgba(255,87,34,.2)}
.contact-item .icon{font-size:30px;margin-bottom:12px;display:inline-block;transition:transform var(--td-transition)}
.contact-item:hover .icon{transform:scale(1.2) rotate(6deg)}
.contact-item h4{font-size:16px;margin:0 0 6px;font-weight:700;color:var(--td-text)}
.contact-item p{font-size:14px;color:var(--td-text-muted);margin:0;line-height:1.8}
footer{background:#1a1a1a;color:#aaa;padding:56px 0 28px;text-align:center;position:relative;overflow:hidden}
footer::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--td-gradient-btn)}
footer a{color:var(--td-primary-light);transition:color var(--td-transition)}
footer a:hover{color:var(--td-accent)}
.footer-links{display:flex;flex-wrap:wrap;gap:16px 28px;justify-content:center;margin-bottom:28px}
.footer-links a{font-size:14px;position:relative;padding:4px 0}
.footer-links a::after{content:"";position:absolute;bottom:0;left:0;width:0;height:1px;background:var(--td-primary-light);transition:width var(--td-transition)}
.footer-links a:hover::after{width:100%}
.footer-bottom{font-size:13px;color:#666;border-top:1px solid rgba(255,255,255,.08);padding-top:20px}
.footer-bottom p{margin-bottom:8px;color:#666}
.footer-bottom a{color:#888}
.footer-bottom a:hover{color:var(--td-primary-light)}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:20px;text-align:center}
.stat-item .num{font-size:38px;font-weight:800;background:var(--td-gradient-text);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;line-height:1.2}
.stat-item .label{font-size:14px;color:var(--td-text-muted);margin-top:6px}
#howto .container h3{margin-top:36px}
#howto .container h4{background:var(--td-surface-glass);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-radius:var(--td-radius-sm);padding:12px 18px;border-left:3px solid var(--td-primary);margin:20px 0 10px;font-size:16px;transition:transform var(--td-transition),box-shadow var(--td-transition)}
#howto .container h4:hover{transform:translateX(6px);box-shadow:var(--td-shadow-sm)}
#sitemap .card p a{display:inline-block;font-size:14px;color:var(--td-text-secondary);padding:2px 0;transition:color var(--td-transition),transform var(--td-transition)}
#sitemap .card p a:hover{color:var(--td-primary);transform:translateX(4px)}
#links .card h3 a{font-size:16px}
#links .card p{margin-top:4px}
#privacy,#disclaimer{background:var(--td-bg-alt)}
#privacy p,#disclaimer p{max-width:900px;margin-left:auto;margin-right:auto}
button[aria-label="返回顶部"]{transition:transform var(--td-transition),box-shadow var(--td-transition),opacity var(--td-transition)!important;animation:tdPopIn .3s cubic-bezier(.22,.61,.36,1)}
button[aria-label="返回顶部"]:hover{transform:translateY(-4px) scale(1.08);box-shadow:0 8px 24px rgba(255,87,34,.5)!important}
@keyframes tdPopIn{from{opacity:0;transform:scale(.6)}to{opacity:1;transform:scale(1)}}
section .container>*:not(h2):not(.section-desc):not(.grid):not(.article-list):not(.faq-item):not(.contact-info):not(.stats){animation:tdFadeUp .6s cubic-bezier(.22,.61,.36,1) both;animation-timeline:view();animation-range:entry 0% entry 30%}
.grid>*,.article-list>*,.contact-info>*,.faq-item{animation:tdFadeUp .6s cubic-bezier(.22,.61,.36,1) both;animation-timeline:view();animation-range:entry 0% entry 25%}
@supports not (animation-timeline:view()){.grid>*,.article-list>*,.contact-info>*,.faq-item,section .container>*:not(h2):not(.section-desc){animation:none;opacity:1}}
@media(max-width:768px){
body{font-size:15px}
.header-inner{padding:10px 14px}
.logo{font-size:20px}
nav ul{gap:10px}
nav a{font-size:12.5px;padding:3px 0}
nav a::after{height:1.5px}
.banner{padding:72px 18px 64px}
.banner h1{font-size:26px;letter-spacing:-.3px}
.banner p{font-size:15px;line-height:1.85}
.banner-btns{margin-top:24px;gap:12px}
.btn{padding:11px 26px;font-size:14.5px}
.breadcrumb{font-size:12.5px;padding:12px 14px}
section{padding:52px 0}
h2{font-size:22px}
h2::after{width:44px;height:3px;margin-top:10px}
.section-desc{font-size:14px;margin-bottom:36px}
h3{font-size:18px;margin:32px 0 12px;padding-left:12px}
h3::before{width:3px}
h4{font-size:16px;margin:22px 0 8px}
p{font-size:14px}
.card{padding:22px 20px;border-radius:var(--td-radius-sm)}
.card .icon{font-size:28px;margin-bottom:10px}
.card h3{font-size:16.5px}
.card p{font-size:13px}
.article-item{padding:22px 20px}
.article-item h3{font-size:16.5px}
.article-item p{font-size:13px}
.faq-item{padding:16px 0}
.faq-item h4{font-size:15px}
.faq-item p{font-size:13px;margin-left:20px}
.contact-item{padding:22px 18px}
.contact-item .icon{font-size:26px}
.contact-item h4{font-size:15px}
.contact-item p{font-size:13px}
.grid{gap:18px}
.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
.article-list{gap:16px}
.contact-info{gap:16px}
.stats{gap:14px}
.stat-item .num{font-size:30px}
.stat-item .label{font-size:13px}
footer{padding:40px 0 22px}
.footer-links{gap:12px 20px;margin-bottom:22px}
.footer-links a{font-size:13px}
.footer-bottom{font-size:12px;padding-top:16px}
#howto .container h4{padding:10px 14px;font-size:14.5px}
button[aria-label="返回顶部"]{bottom:20px!important;right:20px!important;width:42px!important;height:42px!important;font-size:18px!important}
}
@media(max-width:400px){
.banner h1{font-size:22px}
.banner p{font-size:14px}
.btn{padding:10px 22px;font-size:13.5px}
h2{font-size:20px}
nav ul{gap:8px}
nav a{font-size:11.5px}
.logo{font-size:18px}
}
@media(min-width:769px) and (max-width:1024px){
.grid-4{grid-template-columns:repeat(2,1fr)}
.banner h1{font-size:32px}
}
@media(hover:none){
.card:hover{transform:none}
.article-item:hover{transform:none}
.contact-item:hover{transform:none}
}
@media(prefers-reduced-motion:reduce){
*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
}
@supports not (backdrop-filter:blur(1px)){
header{background:var(--td-surface)}
.card,.article-item,.contact-item{background:var(--td-surface)}
}