*{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%}.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{flex:0 0 auto;text-decoration:none}.site-logo img{display:block;height:40px;width:auto;max-width:168px;object-fit:contain}.logo-text{display:inline-flex;align-items:center;height:40px;color:#1D2B5F;font-size:22px;font-weight:900}.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}.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:10px;white-space:nowrap}.login-link{color:#1D2B5F;text-decoration:none;font-weight:700}.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:#FFF;border-radius:999px;text-decoration:none;font-weight:700;box-shadow:0 10px 24px rgba(89,126,247,.28);border:0;cursor:pointer}.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%)}}.menu-toggle,.mobile-register{display:none}.channel-bar{background:#fff;border-bottom:1px solid rgba(89,126,247,.12)}.channel-inner{max-width:1200px;margin:0 auto;padding:0 20px;display:flex;gap:6px;overflow-x:auto;scrollbar-width:thin}.channel-inner a{flex:0 0 auto;padding:11px 9px;color:#5B647A;text-decoration:none;font-size:14px;white-space:nowrap}.channel-inner a:hover,.channel-inner a.is-current{color:#597EF7}.site-main{min-height:60vh}.container{width:min(1200px,calc(100% - 40px));margin:0 auto}.reading{width:min(860px,calc(100% - 40px));margin:0 auto}.section{padding:64px 0}.section-sm{padding:40px 0}.section-title{margin:0 0 12px;color:#1D2B5F;font-size:32px;line-height:1.2}.section-lead{margin:0 0 28px;color:#5B647A;font-size:17px;line-height:1.8}.page-hero{padding:64px 0 34px;background:linear-gradient(180deg,#ECF0FF 0%,rgba(246,248,255,0) 100%)}.page-hero h1{margin:0;color:#1D2B5F;font-size:46px;line-height:1.15}.page-hero p{max-width:760px;margin:18px 0 0;color:#5B647A;font-size:18px;line-height:1.85}.crumbs{margin-bottom:14px;color:#75809B;font-size:14px}.crumbs a{text-decoration:none}.grid-2,.grid-3,.grid-4{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))}.panel,.topic-card,.faq-item,.note-strip,.step-item{background:#fff;border:1px solid rgba(89,126,247,.16);border-radius:18px;box-shadow:0 16px 40px rgba(89,126,247,.10)}.panel,.topic-card{padding:24px}.panel h2,.panel h3,.topic-card h3{margin-top:0;color:#1D2B5F}.panel p,.topic-card p,.reading p,.reading li{font-size:17px;line-height:1.85}.text-link{color:#597EF7;font-weight:700;text-decoration:none}.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;position:absolute;inset:0;background:linear-gradient(135deg,#ECF0FF,#EAF7FF)}.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:32px;align-items:center}.split.reverse .media{order:2}.split .media{min-height:230px}.tag-row,.quick-pills{display:flex;gap:10px;flex-wrap:wrap}.tag-row a,.quick-pills a{display:inline-flex;align-items:center;min-height:38px;padding:8px 14px;border-radius:999px;background:#fff;border:1px solid rgba(89,126,247,.16);color:#1D2B5F;text-decoration:none;font-weight:700}.tag-row a:hover,.quick-pills a:hover{color:#597EF7}.note-strip{padding:20px 24px;color:#39425D;line-height:1.8}.toc{margin:0;padding:0;list-style:none;display:grid;gap:10px}.toc a{color:#597EF7;text-decoration:none;font-weight:700}.step-list{display:grid;gap:14px;counter-reset:steps}.step-item{position:relative;padding:20px 22px 20px 64px;counter-increment:steps}.step-item::before{content:counter(steps);position:absolute;left:20px;top:20px;width:30px;height:30px;border-radius:50%;display:grid;place-items:center;background:#ECF0FF;color:#597EF7;font-weight:800}.quote-note{margin:24px 0;padding:18px 20px;border-left:4px solid #597EF7;background:#fff;border-radius:0 16px 16px 0;color:#4B5674;line-height:1.8}.hero-wrap{padding:34px 0 20px}.hero-slider{position:relative;height:360px;border-radius:18px;background:#101827;overflow:hidden}.hero-slide{position:absolute;inset:0;display:none;align-items:center;justify-content:center;padding:16px}.hero-slide.is-active{display:flex}.hero-slide img{width:100%;height:100%;object-fit:contain;object-position:center}.hero-slide .media-placeholder{position:absolute;inset:16px;background:linear-gradient(135deg,#16213B,#1D2B5F);border-radius:14px}.hero-arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:3;width:42px;height:42px;border-radius:50%;border:1px solid rgba(255,255,255,.38);background:rgba(255,255,255,.16);color:#fff;font-size:24px;cursor:pointer}.hero-prev{left:16px}.hero-next{right:16px}.hero-dots{position:absolute;left:50%;bottom:14px;transform:translateX(-50%);display:flex;gap:8px;z-index:3}.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}.topic-card{display:flex;flex-direction:column;min-height:190px}.topic-card p{color:#5B647A;margin:0 0 14px}.topic-card .text-link{margin-top:auto}.app-banner{padding:28px;border-radius:18px;background:linear-gradient(135deg,#ECF0FF,#EAF7FF);border:1px solid rgba(89,126,247,.16)}.faq-list{display:grid;gap:14px}.faq-item{padding:20px 22px}.faq-item h2,.faq-item h3{margin:0 0 10px;color:#1D2B5F;font-size:20px}.faq-item p{margin:0;line-height:1.8}.table-like{display:grid;gap:1px;background:rgba(89,126,247,.16);border:1px solid rgba(89,126,247,.16);border-radius:18px;overflow:hidden}.table-row{display:grid;grid-template-columns:180px 1fr;background:#fff}.table-row>*{padding:16px 18px}.table-row strong{color:#1D2B5F}.site-footer{background:#1F1F1F;color:#D7DCE8;padding:54px 0 24px}.footer-grid{width:min(1200px,calc(100% - 40px));margin:0 auto;display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:30px}.footer-grid h2{margin:0 0 14px;color:#fff;font-size:17px}.footer-grid a{display:block;margin:9px 0;color:#D7DCE8;text-decoration:none}.footer-grid p{line-height:1.75}.footer-logo{display:inline-block}.footer-logo img{display:block;height:40px;width:auto;max-width:168px;object-fit:contain}.footer-logo span{color:#fff;font-size:22px;font-weight:900}.footer-bottom{width:min(1200px,calc(100% - 40px));margin:30px auto 0;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);font-size:14px;line-height:1.8;color:#BFC6D5}.floating-tools{position:fixed;right:14px;top:50%;transform:translateY(-50%);z-index:9000;display:flex;flex-direction:column;gap:8px;width:108px;padding:10px;background:#fff;border:1px solid rgba(89,126,247,.16);border-radius:18px;box-shadow:0 16px 40px rgba(89,126,247,.16)}.floating-tools>a,.floating-tools button{min-height:38px;border:0;background:#fff;color:#597EF7;text-decoration:none;font:inherit;font-size:14px;font-weight:700;display:grid;place-items:center;cursor:pointer}.floating-tools .main-btn{color:#fff;background:linear-gradient(135deg,#7580EE 0%,#597EF7 48%,#7AC4F5 100%);height:40px;min-width:0;padding:0 10px}.mobile-bottom{display:none}.mobile-drawer,.drawer-mask{display:none}body.drawer-open{overflow:hidden}.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-bottom:1px solid rgba(89,126,247,.12)}.drawer-logo img{height:34px;width:auto;max-width:150px;object-fit:contain}.drawer-logo{text-decoration:none;color:#1D2B5F;font-weight:900}.drawer-close{width:38px;height:38px;border:0;border-radius:50%;background:#ECF0FF;color:#1D2B5F;font-size:26px}.drawer-groups{padding:8px 16px 30px;overflow-y:auto;height:calc(100vh - 68px)}.drawer-groups section{padding:12px 0;border-bottom:1px solid rgba(89,126,247,.10)}.drawer-groups h2{font-size:14px;color:#75809B;margin:0 0 8px}.drawer-groups a{display:block;padding:10px 0;color:#1D2B5F;text-decoration:none;font-weight:700}.article-headline{margin:0 0 18px;color:#1D2B5F;font-size:30px}.reading h2{margin:36px 0 12px;color:#1D2B5F;font-size:26px}.reading h3{margin:28px 0 10px;color:#1D2B5F}.reading ul,.reading ol{padding-left:24px}.reading .media{margin:26px 0;min-height:240px}.legal-callout{padding:24px;background:#fff;border:1px solid rgba(89,126,247,.16);border-radius:18px}.legal-callout h2{margin-top:0}.legal-callout p{margin-bottom:0}.two-col-list{columns:2;column-gap:28px}.two-col-list li{break-inside:avoid;margin:0 0 10px}.mini-review{padding:16px 18px;background:#fff;border-radius:16px;border:1px solid rgba(89,126,247,.16);line-height:1.8;color:#4B5674}
@media(max-width:1180px){.floating-tools{display:none}.grid-4{grid-template-columns:repeat(3,minmax(0,1fr))}.nav-core{gap:2px}.nav-core a{padding:8px 7px;font-size:14px}}
@media(max-width:980px){.site-header{position:sticky}.header-inner{min-height:64px;padding:0 14px}.nav-core,.header-actions,.channel-bar{display:none}.menu-toggle,.mobile-register{display:inline-flex}.menu-toggle{width:42px;height:42px;flex:0 0 42px;border:0;background:transparent;flex-direction:column;align-items:center;justify-content:center;gap:5px}.menu-toggle span{width:22px;height:2px;background:#1D2B5F;border-radius:2px}.site-logo{position:absolute;left:50%;transform:translateX(-50%)}.site-logo img{height:34px;max-width:142px}.mobile-register{margin-left:auto;height:40px;min-width:84px;padding:0 14px}.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}.mobile-bottom{position:fixed;left:0;right:0;bottom:0;z-index:9500;display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border-top:1px solid rgba(89,126,247,.16);padding:6px env(safe-area-inset-right) calc(6px + env(safe-area-inset-bottom)) env(safe-area-inset-left);box-shadow:0 -8px 24px rgba(89,126,247,.08)}.mobile-bottom a{padding:9px 4px;text-align:center;color:#1D2B5F;text-decoration:none;font-size:13px;font-weight:700}.site-footer{padding-bottom:82px}.grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}.split{grid-template-columns:1fr}.split.reverse .media{order:0}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.hero-slider{height:280px}.page-hero h1{font-size:38px}}
@media(max-width:640px){.container,.reading,.footer-grid,.footer-bottom{width:min(100% - 28px,1200px)}.section{padding:48px 0}.section-sm{padding:32px 0}.page-hero{padding:46px 0 28px}.page-hero h1{font-size:31px}.page-hero p{font-size:16px}.section-title{font-size:27px}.grid-4,.grid-3,.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.topic-card,.panel{padding:18px}.topic-card{min-height:174px}.topic-card p,.panel p,.reading p,.reading li{font-size:16px}.hero-wrap{padding-top:22px}.hero-slider{height:210px}.hero-arrow{width:36px;height:36px;font-size:20px}.hero-prev{left:8px}.hero-next{right:8px}.footer-grid{grid-template-columns:1fr}.table-row{grid-template-columns:1fr}.table-row strong{padding-bottom:6px}.table-row span{padding-top:0}.two-col-list{columns:1}.reading .media{min-height:0}.quick-pills{flex-wrap:nowrap;overflow-x:auto;padding-bottom:4px}.quick-pills a{flex:0 0 auto}.header-inner{gap:8px}.site-logo img{max-width:132px}.mobile-register{min-width:78px;padding:0 12px;font-size:14px}}
@media(max-width:420px){.grid-4,.grid-3,.grid-2{grid-template-columns:1fr}.topic-card{min-height:auto}.site-logo img{height:32px;max-width:122px}.mobile-register{min-width:74px;padding:0 10px}.menu-toggle{width:38px;flex-basis:38px}.hero-slider{height:190px}}


/* ===== 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 ===== */