*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#F6F8FF;color:#222;font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;overflow-x:hidden}a{color:inherit}img{max-width:100%}button{font:inherit}.site-header{position:sticky;top:0;z-index:9999;width:100%;background:linear-gradient(135deg,#F7F9FF 0%,#ECF0FF 52%,#EAF7FF 100%);box-shadow:0 8px 24px rgba(89,126,247,.10);backdrop-filter:blur(12px)}.header-inner{max-width:1200px;min-height:72px;margin:0 auto;padding:0 20px;display:flex;align-items:center;justify-content:space-between;gap:16px}.site-logo{display:inline-flex;align-items:center;text-decoration:none;flex:0 0 auto}.site-logo img{display:block;height:40px;width:auto;max-width:168px;object-fit:contain}.logo-fallback{font-weight:900;font-size:24px;color:#1D2B5F;letter-spacing:.04em}.logo-fallback.light{color:#fff}.mobile-logo,.mobile-register,.menu-toggle{display:none}.nav-core{display:flex;align-items:center;gap:8px;white-space:nowrap;flex-wrap:nowrap}.nav-core a{color:#1D2B5F;padding:8px 10px;border-radius:999px;font-weight:700;text-decoration:none;font-size:15px}.nav-core a.is-current,.nav-core a:hover{background:rgba(255,255,255,.82);color:#597EF7}.header-actions{display:flex;align-items:center;gap:8px;flex:0 0 auto}.login-link{text-decoration:none;font-weight:700;color:#1D2B5F;padding:10px 8px}.main-btn{position:relative;overflow:hidden;isolation:isolate;display:inline-flex;align-items:center;justify-content:center;height:42px;min-width:96px;padding:0 20px;background:linear-gradient(135deg,#7580EE 0%,#597EF7 48%,#7AC4F5 100%);color:#FFFFFF;border-radius:999px;text-decoration:none;font-weight:700;box-shadow:0 10px 24px rgba(89,126,247,.28);border:0}.main-btn::before{content:"";position:absolute;inset:-2px;border-radius:inherit;background:linear-gradient(120deg,transparent 0%,rgba(255,255,255,.85) 35%,transparent 70%);transform:translateX(-120%);animation:btnShine 2.4s infinite;z-index:-1}.main-btn::after{content:"";position:absolute;inset:-1px;border-radius:inherit;border:1px solid rgba(255,255,255,.65);box-shadow:0 0 8px rgba(122,196,245,.55),0 0 18px rgba(89,126,247,.35);pointer-events:none}@keyframes btnShine{0%{transform:translateX(-120%)}55%{transform:translateX(120%)}100%{transform:translateX(120%)}}.main-btn.compact{min-width:0;padding:0 12px;height:38px}.channel-bar{background:#fff;border-top:1px solid rgba(89,126,247,.10)}.channel-inner{max-width:1200px;margin:0 auto;padding:0 20px;display:flex;gap:4px;overflow-x:auto;scrollbar-width:thin}.channel-inner a{flex:0 0 auto;padding:11px 9px;text-decoration:none;color:#5B647A;font-size:14px;white-space:nowrap}.channel-inner a:hover,.channel-inner a.is-current{color:#597EF7}.site-main{min-height:60vh}.page-shell{max-width:1200px;margin:0 auto;padding:0 20px}.section{padding:64px 0}.section.tight{padding:40px 0}.section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:26px}.section-head h2,.read-shell h2{margin:0;color:#1D2B5F;font-size:30px;line-height:1.25}.section-head p{max-width:680px;margin:0;color:#5B647A;line-height:1.8}.eyebrow{font-size:13px;letter-spacing:.12em;color:#597EF7;font-weight:800;text-transform:uppercase}.hero{padding:34px 0 22px}.hero-slider{position:relative;max-width:1200px;height:360px;margin:0 auto;border-radius:18px;background:#101827;overflow:hidden;box-shadow:0 20px 50px rgba(16,24,39,.18)}.hero-slide{display:none;position:absolute;inset:0;padding:0}.hero-slide.is-active{display:block}.hero-slide .media{height:100%;aspect-ratio:auto;border-radius:0;background:#101827}.hero-slide .media>img{object-fit:contain}.hero-overlay{position:absolute;left:34px;bottom:34px;max-width:470px;padding:18px 20px;border-radius:16px;background:rgba(16,24,39,.68);backdrop-filter:blur(8px);color:#fff}.hero-overlay h1,.hero-overlay h2{margin:0 0 8px;font-size:36px;line-height:1.16}.hero-overlay p{margin:0;line-height:1.7;color:#E9EDFF}.hero-arrow{position:absolute;top:50%;transform:translateY(-50%);width:42px;height:42px;border-radius:50%;border:1px solid rgba(255,255,255,.28);background:rgba(16,24,39,.55);color:#fff;cursor:pointer;z-index:3}.hero-prev{left:14px}.hero-next{right:14px}.hero-dots{position:absolute;left:50%;bottom:14px;transform:translateX(-50%);display:flex;gap:8px;z-index:4}.hero-dot{width:9px;height:9px;padding:0;border:0;border-radius:50%;background:rgba(255,255,255,.45);cursor:pointer}.hero-dot.is-active{background:#fff;transform:scale(1.25)}.capsules{display:flex;gap:10px;overflow-x:auto;padding:6px 0 10px}.capsules a{flex:0 0 auto;text-decoration:none;border:1px solid rgba(89,126,247,.16);background:#fff;color:#1D2B5F;padding:10px 16px;border-radius:999px;font-weight:700}.observation{margin-top:22px;background:linear-gradient(135deg,#fff,#EEF3FF);border:1px solid rgba(89,126,247,.16);border-radius:18px;padding:20px 24px;line-height:1.85;color:#46516D}.grid{display:grid;gap:20px}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}.info-card,.topic-card,.faq-item,.step-card,.index-card{background:#fff;border:1px solid rgba(89,126,247,.16);border-radius:18px;box-shadow:0 16px 40px rgba(89,126,247,.10);padding:22px;text-decoration:none;min-width:0}.info-card h3,.topic-card h3,.index-card h3{margin:0 0 10px;color:#1D2B5F;font-size:21px}.info-card p,.topic-card p,.index-card p,.faq-item p,.step-card p{margin:0;color:#5B647A;line-height:1.78}.text-link{display:inline-flex;margin-top:15px;color:#597EF7;font-weight:800;text-decoration:none}.topic-card{padding:0;overflow:hidden}.topic-card .media{border-radius:0;height:172px;aspect-ratio:auto}.topic-body{padding:18px}.media{position:relative;width:100%;max-width:100%;overflow:hidden;border-radius:16px;background:#ECF0FF;aspect-ratio:16/9}.media>img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;object-position:center center;display:block}.media-placeholder{display:block;width:100%;height:100%;min-height:160px;background:linear-gradient(135deg,#ECF0FF,#EAF7FF)}.story-row{display:grid;grid-template-columns:1.05fr .95fr;gap:34px;align-items:center}.story-row.reverse{grid-template-columns:.95fr 1.05fr}.story-row.reverse .story-media{order:2}.story-media .media{height:250px;aspect-ratio:auto}.story-copy h2{margin:0 0 14px;color:#1D2B5F;font-size:32px}.story-copy p{margin:0 0 15px;line-height:1.85;color:#46516D}.app-banner{display:grid;grid-template-columns:1.1fr .9fr;gap:28px;align-items:center;background:linear-gradient(135deg,#ECF0FF,#EAF7FF);border-radius:18px;padding:30px;border:1px solid rgba(89,126,247,.16)}.app-banner h2{margin:0 0 10px;color:#1D2B5F}.app-banner p{margin:0 0 12px;line-height:1.8;color:#5B647A}.notice-box{background:#fff;border-left:4px solid #597EF7;border-radius:14px;padding:20px 22px;line-height:1.85;color:#46516D;box-shadow:0 16px 40px rgba(89,126,247,.08)}.page-hero{padding:58px 0 34px;background:linear-gradient(180deg,#EEF3FF 0%,#F6F8FF 100%)}.page-hero-inner{max-width:900px;margin:0 auto;text-align:center}.page-hero h1{margin:8px 0 16px;color:#1D2B5F;font-size:46px;line-height:1.18}.page-hero p{margin:0 auto;color:#5B647A;font-size:18px;line-height:1.85;max-width:760px}.read-shell{max-width:840px;margin:0 auto;padding:54px 20px 76px}.read-shell>p{font-size:17px;line-height:1.88;color:#3F4A66;margin:0 0 20px}.read-shell h2{margin-top:38px;margin-bottom:14px}.read-shell ul,.read-shell ol{padding-left:1.25em;color:#3F4A66;line-height:1.9;font-size:17px}.read-shell li+li{margin-top:8px}.reading-index{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin:26px 0}.reading-index a{text-decoration:none}.split-note{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin:28px 0}.split-note>div{background:#fff;border:1px solid rgba(89,126,247,.16);border-radius:16px;padding:20px}.split-note h3{margin:0 0 10px;color:#1D2B5F}.split-note p{margin:0;line-height:1.8;color:#5B647A}.steps{display:grid;gap:14px;counter-reset:step}.step-card{position:relative;padding-left:72px}.step-card:before{counter-increment:step;content:counter(step);position:absolute;left:20px;top:20px;width:36px;height:36px;display:grid;place-items:center;border-radius:50%;background:#ECF0FF;color:#597EF7;font-weight:900}.faq-list{display:grid;gap:16px}.faq-item h3{margin:0 0 10px;color:#1D2B5F;font-size:20px}.meta-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}.meta-links a{text-decoration:none;border:1px solid rgba(89,126,247,.16);background:#fff;border-radius:999px;padding:9px 14px;color:#597EF7;font-weight:700}.site-footer{background:#1F1F1F;color:#D7DCE8;padding:52px 20px 92px}.footer-grid{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:28px}.footer-grid h2{margin:0 0 14px;color:#fff;font-size:17px}.footer-grid a{display:block;color:#D7DCE8;text-decoration:none;margin:10px 0}.footer-grid a:hover{color:#fff}.footer-brand p{line-height:1.8;max-width:340px}.footer-bottom{max-width:1200px;margin:34px auto 0;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:space-between;gap:20px;line-height:1.75}.side-tools{position:fixed;right:12px;top:50%;transform:translateY(-50%);z-index:8000;width:64px;display:flex;flex-direction:column;gap:8px}.side-tools>a,.side-tools button{background:#fff;color:#597EF7;border:1px solid rgba(89,126,247,.16);border-radius:12px;padding:10px 6px;text-align:center;text-decoration:none;font-size:12px;line-height:1.35;box-shadow:0 8px 22px rgba(89,126,247,.12)}.side-tools .main-btn{color:#fff;background:linear-gradient(135deg,#7580EE,#597EF7,#7AC4F5);padding:8px 4px;height:auto}.to-top{cursor:pointer}.mobile-bottom{display:none}.mobile-drawer,.drawer-mask{display:none}body.drawer-open{overflow:hidden}
@media(min-width:1281px){.site-main{padding-right:68px}}
@media(max-width:1080px){.nav-core{gap:3px}.nav-core a{padding:8px 7px;font-size:14px}.header-inner{padding:0 14px}.site-logo img{max-width:145px}.header-actions .main-btn{min-width:80px;padding:0 14px}}
@media(max-width:980px){.desktop-logo,.nav-core,.header-actions,.channel-bar,.side-tools{display:none}.mobile-logo,.mobile-register,.menu-toggle{display:inline-flex}.header-inner{min-height:66px;padding:0 12px;gap:10px}.mobile-logo{position:absolute;left:50%;transform:translateX(-50%)}.mobile-logo img{height:34px;max-width:140px}.mobile-register{height:40px;min-width:86px;padding:0 13px;font-size:14px;margin-left:auto}.menu-toggle{width:42px;height:42px;border:0;border-radius:12px;background:#fff;flex-direction:column;align-items:center;justify-content:center;gap:4px;box-shadow:0 6px 18px rgba(89,126,247,.12);cursor:pointer}.menu-toggle span{display:block;width:19px;height:2px;background:#1D2B5F}.mobile-drawer{display:block;position:fixed;inset:0 auto 0 0;width:min(84vw,320px);background:#fff;z-index:12000;transform:translateX(-105%);transition:transform .2s ease;box-shadow:18px 0 40px rgba(29,43,95,.18)}.mobile-drawer.is-open{transform:translateX(0)}.drawer-mask{display:none;position:fixed;inset:0;background:rgba(16,24,39,.42);z-index:11000;opacity:0;pointer-events:none;transition:opacity .18s ease}.drawer-mask.is-visible{display:block;opacity:1;pointer-events:auto}.drawer-head{height:66px;padding:0 14px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #EEF1F7}.drawer-close{width:40px;height:40px;border:0;background:#F6F8FF;border-radius:12px;font-size:28px;color:#1D2B5F;cursor:pointer}.drawer-scroll{height:calc(100vh - 66px);overflow-y:auto;padding:12px 14px 28px}.drawer-scroll section{padding:10px 0 14px;border-bottom:1px solid #EEF1F7}.drawer-scroll h2{font-size:13px;color:#7A849C;margin:0 0 8px;letter-spacing:.08em}.drawer-scroll a{display:block;padding:10px 8px;border-radius:10px;text-decoration:none;color:#1D2B5F}.drawer-scroll a:hover{background:#F2F5FF;color:#597EF7}.mobile-bottom{position:fixed;display:grid;grid-template-columns:repeat(4,1fr);left:0;right:0;bottom:0;z-index:9000;background:#fff;border-top:1px solid rgba(89,126,247,.14);padding-bottom:env(safe-area-inset-bottom)}.mobile-bottom a{text-decoration:none;text-align:center;padding:12px 6px;color:#1D2B5F;font-weight:700;font-size:13px}.site-footer{padding-bottom:108px}.hero-slider{height:280px}.hero-overlay{left:22px;bottom:26px;max-width:420px}.hero-overlay h1,.hero-overlay h2{font-size:30px}.grid-4{grid-template-columns:repeat(3,minmax(0,1fr))}.page-hero h1{font-size:38px}.story-row,.story-row.reverse,.app-banner{grid-template-columns:1fr}.story-row.reverse .story-media{order:0}}
@media(max-width:700px){.page-shell{padding:0 14px}.section{padding:46px 0}.section.tight{padding:34px 0}.section-head{display:block}.section-head h2,.read-shell h2{font-size:26px}.section-head p{margin-top:10px}.hero{padding:16px 0 10px}.hero-slider{height:210px;border-radius:16px}.hero-overlay{left:12px;right:12px;bottom:18px;max-width:none;padding:12px 14px}.hero-overlay h1,.hero-overlay h2{font-size:25px}.hero-overlay p{font-size:14px;line-height:1.55}.hero-arrow{width:34px;height:34px}.grid-3,.grid-2{grid-template-columns:1fr}.grid-4{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.topic-card .media{height:150px}.topic-body{padding:14px}.topic-card h3{font-size:17px}.topic-card p{font-size:14px}.story-copy h2{font-size:28px}.story-media .media{height:220px}.app-banner{padding:20px}.page-hero{padding:42px 0 26px}.page-hero h1{font-size:30px}.page-hero p{font-size:16px}.read-shell{padding:38px 16px 62px}.read-shell>p,.read-shell ul,.read-shell ol{font-size:16px}.reading-index{grid-template-columns:1fr}.split-note{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:8px}.mobile-register{min-width:82px;padding:0 10px}.mobile-logo img{max-width:126px}.observation{padding:18px}.info-card,.faq-item,.step-card,.index-card{padding:18px}.step-card{padding-left:64px}}
@media(max-width:390px){.mobile-logo img{max-width:112px}.mobile-register{min-width:76px;font-size:13px;padding:0 9px}.menu-toggle{width:40px;height:40px}.grid-4{gap:10px}.topic-body{padding:12px}.topic-card p{display:none}.hero-slider{height:190px}.hero-overlay p{display:none}}
/* ===== 2026-09-22 批量修复：注册入口可见性 ===== */
.main-btn,
a.main-btn,
.header-actions .main-btn,
.mobile-register,
.hero-actions .main-btn,
.hero-actions a,
.slider-register,
.carousel-register {
position: relative !important;
display: inline-flex !important;
align-items: center !important;
justify-content: center !important;
min-width: 96px !important;
min-height: 42px !important;
padding: 0 20px !important;
border: 0 !important;
border-radius: 999px !important;
background: linear-gradient(135deg,#7580EE 0%,#597EF7 48%,#7AC4F5 100%) !important;
color: #fff !important;
-webkit-text-fill-color: #fff !important;
font-size: 15px !important;
font-weight: 700 !important;
line-height: 42px !important;
text-indent: 0 !important;
opacity: 1 !important;
visibility: visible !important;
overflow: visible !important;
text-decoration: none !important;
white-space: nowrap !important;
z-index: 20 !important;
box-shadow: 0 10px 24px rgba(89,126,247,.28) !important;
}
.main-btn::before,
.main-btn::after {
pointer-events: none !important;
}
.hero-actions,
.slide-actions,
.slider-actions,
.banner-actions {
display: flex !important;
visibility: visible !important;
opacity: 1 !important;
position: relative !important;
z-index: 30 !important;
gap: 12px !important;
}
.hero-actions a,
.slide-actions a,
.slider-actions a,
.banner-actions a {
font-size: 15px !important;
color: #fff !important;
-webkit-text-fill-color: #fff !important;
}
/* 图片绝不能透明或隐藏 */
.media img,
.hero-slider img,
.slider img,
.carousel img,
.slide img,
.banner img {
display: block !important;
visibility: visible !important;
opacity: 1 !important;
max-width: 100% !important;
object-fit: contain !important;
object-position: center !important;
}
/* 手机菜单关闭时绝不能用透明遮罩盖住按钮 */
.drawer-mask {
pointer-events: none !important;
}
.drawer-mask.is-visible {
pointer-events: auto !important;
}
@media(max-width:980px){
.mobile-register {
display: inline-flex !important;
visibility: visible !important;
opacity: 1 !important;
font-size: 14px !important;
min-width: 82px !important;
padding: 0 14px !important;
}
}
/* ===== 注册入口去重修复 ===== */
/* 电脑端绝对隐藏手机注册按钮 */
.mobile-register{
display:none !important;
}
/* 删除上一轮误加到轮播中的注册入口 */
.slider-register,
.slide-actions .slider-register,
.hero-slider .slider-register,
.hero-carousel .slider-register,
.home-slider .slider-register{
display:none !important;
}
/* 电脑端只显示正常桌面注册 */
.desktop-register{
display:inline-flex !important;
}
/* 手机端：隐藏桌面按钮，只保留顶部一个注册入口 */
@media(max-width:980px){
.desktop-register{
display:none !important;
}
.mobile-register{
display:inline-flex !important;
align-items:center !important;
justify-content:center !important;
}
}
/* ===== FINAL REGISTER FIX ===== */
/* 电脑顶部 */
.header-actions{
display:flex !important;
align-items:center !important;
gap:10px !important;
}
.header-actions .login-link{
display:inline-flex !important;
align-items:center !important;
justify-content:center !important;
color:#1D2B5F !important;
font-weight:700 !important;
text-decoration:none !important;
white-space:nowrap !important;
}
.header-actions .desktop-register{
display:inline-flex !important;
}
/* 手机按钮电脑端绝对隐藏 */
.header-actions .mobile-register{
display:none !important;
}
/* 轮播只保留这一个注册入口 */
.carousel-register{
position:absolute !important;
left:50% !important;
bottom:58px !important;
transform:translateX(-50%) !important;
z-index:50 !important;
display:inline-flex !important;
align-items:center !important;
justify-content:center !important;
width:auto !important;
min-width:112px !important;
height:44px !important;
padding:0 22px !important;
border-radius:999px !important;
background:linear-gradient(135deg,#7580EE 0%,#597EF7 48%,#7AC4F5 100%) !important;
color:#fff !important;
-webkit-text-fill-color:#fff !important;
text-decoration:none !important;
font-weight:800 !important;
font-size:16px !important;
box-shadow:
0 10px 24px rgba(89,126,247,.35),
0 0 20px rgba(122,196,245,.35) !important;
}
/* 旧的错误按钮全部隐藏 */
.slider-register,
.slide-actions .slider-register,
.hero-actions .slider-register{
display:none !important;
}
/* 手机 */
@media(max-width:980px){
.header-actions .login-link,
.header-actions .desktop-register{
display:none !important;
}
.header-actions .mobile-register{
display:inline-flex !important;
align-items:center !important;
justify-content:center !important;
min-width:88px !important;
height:40px !important;
padding:0 13px !important;
}
.carousel-register{
bottom:42px !important;
min-width:96px !important;
height:40px !important;
padding:0 16px !important;
font-size:14px !important;
}
}
/* ===== TOPIC IMAGE CARDS FINAL START ===== */
.topic-grid{
align-items:stretch;
}
.topic-card.topic-card-photo{
padding:0 !important;
overflow:hidden !important;
display:block !important;
min-height:0 !important;
background:#fff !important;
border:1px solid rgba(89,126,247,.16) !important;
border-radius:18px !important;
text-decoration:none !important;
box-shadow:0 12px 30px rgba(89,126,247,.08) !important;
transition:transform .18s ease, box-shadow .18s ease !important;
}
.topic-card.topic-card-photo:hover{
transform:translateY(-3px);
box-shadow:0 18px 36px rgba(89,126,247,.14) !important;
}
.topic-card .topic-thumb{
display:block !important;
position:relative !important;
width:100% !important;
aspect-ratio:16/9 !important;
overflow:hidden !important;
background:#ECF0FF !important;
border-radius:0 !important;
padding:0 !important;
margin:0 !important;
}
.topic-card .topic-thumb img{
display:block !important;
width:100% !important;
height:100% !important;
max-width:100% !important;
object-fit:contain !important;
object-position:center center !important;
opacity:1 !important;
visibility:visible !important;
}
.topic-card .topic-image-missing{
display:block !important;
position:absolute !important;
inset:0 !important;
background:linear-gradient(135deg,#ECF0FF,#EAF7FF) !important;
}
.topic-card .topic-copy{
display:block !important;
padding:17px 18px 20px !important;
background:#fff !important;
}
.topic-card .topic-copy strong{
display:block !important;
margin:0 0 8px !important;
color:#1D2B5F !important;
font-size:19px !important;
line-height:1.4 !important;
}
.topic-card .topic-copy > span{
display:block !important;
color:#5B647A !important;
font-size:14px !important;
line-height:1.7 !important;
}
/* 电脑四列 */
@media(min-width:981px){
.topic-grid{
grid-template-columns:repeat(4,minmax(0,1fr)) !important;
}
}
/* 平板三列 */
@media(max-width:980px) and (min-width:641px){
.topic-grid{
grid-template-columns:repeat(3,minmax(0,1fr)) !important;
}
}
/* 手机两列 */
@media(max-width:640px){
.topic-grid{
grid-template-columns:repeat(2,minmax(0,1fr)) !important;
gap:12px !important;
}
.topic-card .topic-copy{
padding:13px 13px 16px !important;
}
.topic-card .topic-copy strong{
font-size:16px !important;
}
.topic-card .topic-copy > span{
font-size:13px !important;
}
}
/* ===== TOPIC IMAGE CARDS FINAL END ===== */