:root{
    --brand: rgb(255, 80, 0);
    --brand-dark: #E85A00;
    --brand-soft: #FFF3EC;
    --brand-line: rgba(255, 80, 0, 0.20);
    --body-bg: #F6F6F6;
    --card: #FFFFFF;
    --text: #222222;
    --muted: #555555;
    --light: #777777;
    --line: #ECECEC;
    --footer: #1F1F1F;
    --footer-soft: #2B2B2B;
    --footer-text: #D8D8D8;
    --shadow: 0 12px 30px rgba(20, 20, 20, 0.08);
    --radius: 18px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
    margin:0;
    font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
    color:var(--text);
    background:var(--body-bg);
    line-height:1.75;
    overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
.container{width:min(1180px, calc(100% - 32px));margin:0 auto}
.site-wrap{min-height:100vh;display:flex;flex-direction:column}
.main-content{flex:1}
.top-notice{
    background:#fff;
    border-bottom:1px solid var(--line);
    color:var(--muted);
    font-size:13px;
}
.notice-inner{
    display:flex;
    gap:10px;
    align-items:center;
    min-height:38px;
}
.notice-inner span{
    color:var(--brand);
    font-weight:700;
    white-space:nowrap;
}
.notice-inner p{margin:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:rgba(255,255,255,.96);
    backdrop-filter:blur(12px);
    border-bottom:1px solid rgba(236,236,236,.86);
    box-shadow:0 4px 18px rgba(0,0,0,.04);
}
.header-inner{
    height:64px;
    display:grid;
    grid-template-columns:44px 1fr auto;
    align-items:center;
    gap:12px;
}
.logo{
    justify-self:center;
    display:flex;
    align-items:center;
    justify-content:center;
    min-width:0;
}
.logo img{height:38px;width:auto;max-width:150px;object-fit:contain}
.menu-toggle{
    width:42px;height:42px;border:none;background:#fff;border-radius:12px;
    display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
    cursor:pointer;border:1px solid var(--line);
}
.menu-toggle span{width:20px;height:2px;background:#222;border-radius:2px}
.desktop-nav{display:none}
.main-btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    min-height:38px;
    padding:0 16px;
    background:var(--brand);
    color:#fff;
    font-weight:800;
    border-radius:999px;
    box-shadow:0 8px 18px rgba(255,80,0,.22);
    transition:.2s ease;
    white-space:nowrap;
}
.main-btn:hover{background:var(--brand-dark);transform:translateY(-1px)}
.drawer-overlay{
    position:fixed;
    inset:0;
    background:rgba(0,0,0,.46);
    z-index:80;
    opacity:0;
    pointer-events:none;
    transition:.25s ease;
}
.mobile-drawer{
    position:fixed;
    left:0;
    top:0;
    bottom:0;
    width:84vw;
    max-width:320px;
    background:#fff;
    z-index:90;
    transform:translateX(-105%);
    transition:transform .28s ease;
    box-shadow:12px 0 32px rgba(0,0,0,.18);
    overflow-y:auto;
}
.drawer-open{overflow:hidden}
.drawer-open .drawer-overlay{opacity:1;pointer-events:auto}
.drawer-open .mobile-drawer{transform:translateX(0)}
.drawer-head{
    display:flex;
    align-items:center;
    justify-content:space-between;
    padding:18px 20px;
    border-bottom:1px solid var(--line);
}
.drawer-logo img{height:38px;width:auto;object-fit:contain}
.drawer-close{
    width:38px;height:38px;border:none;background:var(--brand-soft);color:var(--brand);
    border-radius:12px;font-size:28px;line-height:1;cursor:pointer;
}
.drawer-nav{display:flex;flex-direction:column;padding:14px}
.drawer-nav a{
    padding:13px 14px;
    color:#222;
    border-radius:12px;
    font-weight:700;
    margin-bottom:4px;
}
.drawer-nav a.active,.drawer-nav a:hover{background:var(--brand-soft);color:var(--brand)}
.section{padding:32px 0}
.section-head{margin-bottom:18px}
.kicker{
    display:inline-flex;
    align-items:center;
    color:var(--brand);
    background:var(--brand-soft);
    border:1px solid var(--brand-line);
    padding:3px 10px;
    border-radius:999px;
    font-size:13px;
    font-weight:800;
}
h1,h2,h3{line-height:1.35;margin:0 0 12px}
h1{font-size:30px;letter-spacing:-.5px}
h2{font-size:24px}
h3{font-size:18px}
p{margin:0 0 12px;color:var(--muted)}
.text-link{
    color:var(--brand);
    font-weight:800;
    border-bottom:1px solid rgba(255,80,0,.25);
}
.text-link:hover{color:var(--brand-dark);border-bottom-color:var(--brand-dark)}
.card,.content-card,.feature-card,.info-card,.faq-item{
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--radius);
    box-shadow:var(--shadow);
}
.hero-platform{
    padding:24px 0 38px;
    background:
        radial-gradient(circle at 10% 10%, rgba(255,80,0,.12), transparent 25%),
        linear-gradient(180deg,#fff 0%,#f6f6f6 100%);
}
.platform-grid{
    display:grid;
    grid-template-columns:1fr;
    gap:16px;
}
.category-sidebar{
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--radius);
    padding:14px;
    box-shadow:var(--shadow);
}
.category-sidebar h2{font-size:17px;margin-bottom:10px}
.category-sidebar a{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:10px;
    padding:11px 12px;
    border-radius:12px;
    color:#333;
    font-weight:700;
    border:1px solid transparent;
}
.category-sidebar a span:first-child{
    width:28px;height:28px;border-radius:9px;background:var(--brand-soft);color:var(--brand);
    display:inline-flex;align-items:center;justify-content:center;font-weight:900;
}
.category-sidebar a.active,.category-sidebar a:hover{
    color:var(--brand);
    border-color:var(--brand-line);
    background:#fffaf7;
}
.banner-slider{
    position:relative;
    background:#fff;
    border:1px solid var(--line);
    border-radius:22px;
    box-shadow:var(--shadow);
    min-height:230px;
    overflow:hidden;
    display:flex;
    align-items:center;
    justify-content:center;
}
.banner-slide{
    position:absolute;
    inset:0;
    opacity:0;
    transition:opacity .4s ease;
    display:flex;
    align-items:center;
    justify-content:center;
    padding:12px;
    background:linear-gradient(135deg,#fff 0%,#fff6f1 100%);
}
.banner-slide.active{opacity:1;position:relative}
.banner-slide img{
    width:100%;
    height:100%;
    max-height:300px;
    object-fit:contain;
    object-position:center;
}
.slider-dots{
    position:absolute;
    left:0;
    right:0;
    bottom:12px;
    display:flex;
    justify-content:center;
    gap:8px;
    z-index:2;
}
.slider-dot{
    width:8px;height:8px;border-radius:999px;border:none;background:rgba(34,34,34,.25);
    padding:0;cursor:pointer;
}
.slider-dot.active{width:22px;background:var(--brand)}
.promo-info{
    background:linear-gradient(180deg,#fff 0%,#fff3ec 100%);
    border:1px solid var(--brand-line);
    border-radius:var(--radius);
    box-shadow:var(--shadow);
    padding:18px;
}
.promo-info h2{color:#222}
.promo-list{list-style:none;padding:0;margin:14px 0}
.promo-list li{
    padding:10px 0;
    border-bottom:1px solid rgba(255,80,0,.12);
    color:var(--muted);
}
.promo-list li:last-child{border-bottom:none}
.quick-grid,.feature-grid,.content-grid,.zone-grid,.tips-grid,.step-grid{
    display:grid;
    grid-template-columns:1fr;
    gap:16px;
}
.quick-grid{grid-template-columns:repeat(2,1fr)}
.quick-item{
    background:#fff;
    border:1px solid var(--line);
    border-radius:16px;
    padding:14px;
    font-weight:800;
    color:#222;
    display:flex;
    flex-direction:column;
    gap:5px;
}
.quick-item small{color:var(--light);font-weight:600}
.feature-card,.content-card,.card{padding:18px}
.feature-card h3,.content-card h3{color:#222}
.card-image{
    min-height:150px;
    border-radius:16px;
    background:#fff8f3;
    border:1px solid var(--brand-line);
    display:flex;
    align-items:center;
    justify-content:center;
    padding:12px;
    margin-bottom:14px;
}
.card-image img{
    max-width:100%;
    max-height:220px;
    object-fit:contain;
    object-position:center;
}
.app-section,.about-section{
    background:#fff;
    border:1px solid var(--line);
    border-radius:24px;
    box-shadow:var(--shadow);
    padding:20px;
}
.app-layout,.about-layout,.page-visual-layout{
    display:grid;
    grid-template-columns:1fr;
    gap:20px;
    align-items:center;
}
.app-image,.about-image,.page-image{
    min-height:220px;
    border-radius:20px;
    background:linear-gradient(135deg,#fff4ed,#fff);
    border:1px solid var(--brand-line);
    display:flex;
    align-items:center;
    justify-content:center;
    padding:16px;
}
.app-image img,.about-image img,.page-image img{
    max-width:100%;
    max-height:380px;
    object-fit:contain;
    object-position:center;
}
.app-image.double{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.badge-list,.highlight-list{
    display:grid;
    grid-template-columns:1fr;
    gap:10px;
    margin-top:16px;
}
.badge,.highlight{
    background:#fffaf7;
    border:1px solid var(--brand-line);
    border-radius:14px;
    padding:12px;
}
.badge strong,.highlight strong{display:block;color:#222;margin-bottom:3px}
.faq-list{display:grid;gap:12px}
.faq-item{padding:16px}
.faq-item h3{font-size:17px;color:#222}
.reminder{
    background:#2b2b2b;
    color:#fff;
    border-radius:24px;
    padding:22px;
    box-shadow:var(--shadow);
}
.reminder h2,.reminder h3{color:#fff}
.reminder p,.reminder li{color:#e8e8e8}
.reminder ul{margin:12px 0 0;padding-left:18px}
.cta-section{
    background:#fff;
    border:1px solid var(--line);
    border-radius:24px;
    padding:22px;
    text-align:center;
    box-shadow:var(--shadow);
}
.page-hero{
    background:linear-gradient(135deg,#fff 0%,#fff3ec 100%);
    border-bottom:1px solid var(--line);
    padding:34px 0;
}
.page-hero .container{display:grid;grid-template-columns:1fr;gap:18px;align-items:center}
.breadcrumb{color:var(--light);font-size:14px;margin-bottom:8px}
.breadcrumb a{color:var(--brand);font-weight:700}
.page-shell{padding:30px 0}
.article-grid{
    display:grid;
    grid-template-columns:1fr;
    gap:18px;
}
.article-main{
    background:#fff;
    border:1px solid var(--line);
    border-radius:24px;
    padding:20px;
    box-shadow:var(--shadow);
}
.article-main section{margin-bottom:26px}
.article-main section:last-child{margin-bottom:0}
.article-main ul,.article-main ol{padding-left:22px;color:var(--muted)}
.article-main li{margin-bottom:8px}
.sidebar-card{
    background:#fff;
    border:1px solid var(--line);
    border-radius:20px;
    padding:18px;
    box-shadow:var(--shadow);
}
.sidebar-card a{display:block;margin:8px 0}
.notice-card{
    background:#fff7f2;
    border:1px solid var(--brand-line);
    border-radius:18px;
    padding:16px;
    margin-top:16px;
}
.site-footer{
    background:var(--footer);
    color:var(--footer-text);
    margin-top:40px;
}
.footer-grid{
    display:grid;
    grid-template-columns:1fr;
    gap:24px;
    padding:36px 0;
}
.footer-brand img{height:42px;width:auto;object-fit:contain;margin-bottom:14px}
.footer-brand p,.footer-col a,.footer-bottom p{color:var(--footer-text)}
.footer-warning{font-size:13px;color:#f1f1f1!important}
.footer-col h3{color:#fff;font-size:16px}
.footer-col a{display:block;margin:8px 0}
.footer-col a:hover{color:#fff}
.footer-bottom{background:#171717;padding:12px 0;text-align:center}
.footer-bottom p{margin:0;font-size:13px}
@media (min-width: 640px){
    .quick-grid{grid-template-columns:repeat(4,1fr)}
    .feature-grid,.zone-grid,.tips-grid,.step-grid{grid-template-columns:repeat(2,1fr)}
    h1{font-size:38px}
    h2{font-size:28px}
}
@media (min-width: 900px){
    .header-inner{
        height:76px;
        grid-template-columns:auto 1fr auto;
        gap:24px;
    }
    .menu-toggle{display:none}
    .logo{justify-self:start}
    .logo img{height:46px;max-width:190px}
    .desktop-nav{
        display:flex;
        justify-content:center;
        align-items:center;
        gap:4px;
    }
    .desktop-nav a{
        padding:10px 12px;
        border-radius:999px;
        color:#333;
        font-weight:800;
        font-size:15px;
    }
    .desktop-nav a.active,.desktop-nav a:hover{
        color:var(--brand);
        background:var(--brand-soft);
    }
    .main-btn{min-height:42px;padding:0 22px}
    .platform-grid{
        grid-template-columns:210px minmax(0,1fr) 260px;
        align-items:stretch;
        gap:18px;
    }
    .banner-slider{min-height:372px}
    .banner-slide img{max-height:350px}
    .promo-info{padding:20px}
    .feature-grid{grid-template-columns:repeat(3,1fr)}
    .content-grid{grid-template-columns:repeat(3,1fr)}
    .zone-grid{grid-template-columns:repeat(3,1fr)}
    .app-section,.about-section{padding:30px}
    .app-layout,.about-layout,.page-visual-layout{grid-template-columns:1fr 1fr;gap:30px}
    .badge-list,.highlight-list{grid-template-columns:repeat(2,1fr)}
    .page-hero .container{grid-template-columns:1.2fr .8fr}
    .article-grid{grid-template-columns:minmax(0,1fr) 280px;align-items:start}
    .article-main{padding:30px}
    .footer-grid{grid-template-columns:2fr 1fr 1fr 1fr}
}
@media (min-width: 1120px){
    .desktop-nav a{padding:10px 15px}
    .platform-grid{grid-template-columns:225px minmax(0,1fr) 285px}
}
@media (max-width: 380px){
    .container{width:min(100% - 24px, 1180px)}
    .main-btn{padding:0 12px;font-size:14px}
    .logo img{max-width:120px}
    h1{font-size:26px}
    .quick-grid{grid-template-columns:1fr}
}