/* ===== 360安全卫士 全局样式 v2 - 纯绿主题 ===== */
:root {
    --green: #00b85c;
    --green-dark: #009a4c;
    --green-light: #e6f9f0;
    --green-glow: rgba(0,184,92,0.2);
    --primary: #00b85c;
    --primary-dark: #009a4c;
    --primary-light: #e6f9f0;
    --secondary: #f7f8fa;
    --surface: #fff;
    --surface2: #f0f2f5;
    --text: #1d2129;
    --text2: #6b7280;
    --text3: #9ca3af;
    --dark: #1a2f4e;
    --white: #fff;
    --bg: #f7f8fa;
    --border: #e4e7ed;
    --shadow: 0 4px 16px rgba(0,0,0,0.06),0 2px 6px rgba(0,0,0,0.04);
    --shadow-hover: 0 12px 32px rgba(0,0,0,0.08),0 4px 12px rgba(0,0,0,0.04);
    --radius: 14px;
    --max-w: 1200px;
    --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
}
*{margin:0;padding:0;box-sizing:border-box;font-family:"Inter","PingFang SC","Microsoft YaHei",sans-serif;}
html{scroll-behavior:smooth;scrollbar-width:thin;scrollbar-color:#c0c4cc #f7f8fa;}
body{background:var(--bg);color:var(--text);overflow-x:hidden;min-height:100vh;display:flex;flex-direction:column;line-height:1.7;-webkit-font-smoothing:antialiased;}
::-webkit-scrollbar{width:5px}
::-webkit-scrollbar-track{background:#f7f8fa}
::-webkit-scrollbar-thumb{background:#c0c4cc;border-radius:10px}

/* ===== 导航栏 ===== */
.pc-nav{
    position:fixed;top:0;left:0;width:100%;z-index:1000;
    background:rgba(255,255,255,0.92);backdrop-filter:blur(14px) saturate(160%);
    -webkit-backdrop-filter:blur(14px) saturate(160%);
    border-bottom:1px solid rgba(0,0,0,0.06);
    padding:0;transition:var(--transition);
}
.pc-nav .container{
    max-width:var(--max-w);margin:0 auto;padding:12px 24px;
    display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px;
}
.pc-logo-area{display:flex;align-items:center;gap:10px;text-decoration:none;flex-shrink:0;}
.pc-logo-icon{
    width:40px;height:40px;border-radius:10px;
    background:linear-gradient(135deg,var(--green),#00d68f);
    display:flex;align-items:center;justify-content:center;
    box-shadow:0 2px 10px var(--green-glow);
    transition:var(--transition);
}
.pc-logo-icon i{font-size:20px;color:#fff;}
.pc-logo-area:hover .pc-logo-icon{box-shadow:0 4px 18px rgba(0,184,92,0.4);transform:scale(1.04);}
.pc-logo-text .logo-title{
    font-size:1rem;font-weight:700;color:#1d2129;letter-spacing:0.3px;
    background:linear-gradient(135deg,var(--green),#00d68f);
    -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
}
.pc-logo-text span{font-size:0.68rem;color:var(--text2);letter-spacing:1px;}
.pc-nav-links{display:flex;align-items:center;gap:6px;flex-wrap:wrap;}
.pc-nav-links a{
    text-decoration:none;color:var(--text2);font-size:0.88rem;
    padding:8px 14px;border-radius:7px;transition:var(--transition);
    white-space:nowrap;font-weight:500;
}
.pc-nav-links a:hover,.pc-nav-links a.active{color:var(--green);background:var(--green-light);}
.pc-nav-links a.active{font-weight:600;}
.pc-btn-outline{
    background:transparent;border:1.5px solid #d1d5db;color:var(--text);
    padding:8px 14px;border-radius:7px;cursor:pointer;font-size:0.88rem;
    transition:var(--transition);white-space:nowrap;font-family:inherit;
    display:flex;align-items:center;gap:6px;font-weight:500;
}
.pc-btn-outline:hover{border-color:var(--green);color:var(--green);background:var(--green-light);}
.pc-btn-primary{
    background:var(--green);color:#fff!important;font-weight:600!important;
    padding:9px 16px!important;border-radius:7px!important;
    box-shadow:0 2px 10px var(--green-glow);
}
.pc-btn-primary:hover{background:var(--green-dark);box-shadow:0 4px 16px rgba(0,184,92,0.35);transform:translateY(-1px);}

/* ===== Container ===== */
.container{max-width:var(--max-w);margin:0 auto;padding:0 20px;}

/* ===== Page Banner (help pages) ===== */
.page-banner{
    padding:100px 0 48px;
    background:linear-gradient(180deg,#e6f9f0 0%,#f7f8fa 100%);
    text-align:center;
}
.page-banner .content{max-width:var(--max-w);margin:0 auto;padding:0 20px;}
.page-banner .breadcrumb{font-size:0.85rem;color:var(--text2);margin-bottom:12px;}
.page-banner .breadcrumb a{color:var(--green);text-decoration:none;font-weight:500;}
.page-banner .breadcrumb a:hover{text-decoration:underline;}
.page-banner .breadcrumb .sep{margin:0 8px;color:var(--text3);}
.page-banner .breadcrumb .cur{color:var(--text3);}
.page-banner h1{font-size:2rem;font-weight:800;color:var(--dark);margin-bottom:8px;line-height:1.3;}
.page-banner p{font-size:1rem;color:var(--text2);max-width:600px;margin:0 auto;}

/* ===== Section Common ===== */
.section{padding:80px 0;}
.section-title{text-align:center;margin-bottom:50px;}
.section-title h2{font-size:2.2rem;margin-bottom:12px;color:var(--dark);}
.section-title p{font-size:1rem;color:var(--text2);max-width:600px;margin:0 auto;line-height:1.7;}
.section-white{background:var(--white);}
.section-light{background:linear-gradient(135deg,#e6f9f0 0%,#f7f8fa 100%);}

/* ===== Subtitle Badge ===== */
.subtitle{display:inline-flex;align-items:center;gap:6px;background:var(--green-light);padding:6px 16px;border-radius:20px;font-size:13px;font-weight:600;color:var(--green);margin-bottom:12px;}

/* ===== Help Sidebar ===== */
.sidebar-layout{display:flex;gap:40px;align-items:flex-start;}
.help-sidebar{width:250px;flex-shrink:0;position:sticky;top:100px;align-self:flex-start;}
.help-sidebar .sidebar-title{font-weight:700;font-size:1rem;color:var(--dark);margin-bottom:16px;display:flex;align-items:center;gap:8px;}
.help-sidebar .sidebar-category{margin-bottom:8px;}
.help-sidebar .sidebar-cat-header{
    display:flex;align-items:center;gap:8px;padding:10px 14px;
    border-radius:8px;cursor:pointer;font-size:0.88rem;font-weight:600;
    color:var(--text);transition:var(--transition);
}
.help-sidebar .sidebar-cat-header:hover{background:var(--green-light);color:var(--green);}
.help-sidebar .sidebar-cat-header .toggle-icon{font-size:0.65rem;margin-left:auto;transition:var(--transition);}
.help-sidebar .sidebar-cat-header.open .toggle-icon{transform:rotate(90deg);}
.help-sidebar .sidebar-cat-body{display:none;padding:4px 0 4px 28px;}
.help-sidebar .sidebar-cat-body.open{display:block;}
.help-sidebar .sidebar-cat-body a{
    display:block;padding:7px 10px;border-radius:6px;font-size:0.82rem;
    color:var(--text2);text-decoration:none;transition:var(--transition);
}
.help-sidebar .sidebar-cat-body a:hover{color:var(--green);background:var(--green-light);}
.help-main{flex:1;min-width:0;}

/* ===== Article Content ===== */
.article-content{line-height:1.8;color:var(--text);}
.article-content h2{font-size:1.5rem;font-weight:700;color:var(--dark);margin:36px 0 16px;padding-bottom:10px;border-bottom:2px solid var(--green-light);}
.article-content h3{font-size:1.15rem;font-weight:600;color:var(--dark);margin:24px 0 12px;}
.article-content p{margin-bottom:14px;color:var(--text2);line-height:1.8;}
.article-content ul,.article-content ol{margin:8px 0 18px 24px;color:var(--text2);}
.article-content li{margin-bottom:6px;}
.article-content .step-card{
    background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
    padding:18px 22px;margin-bottom:14px;display:flex;gap:14px;align-items:flex-start;
    transition:var(--transition);
}
.article-content .step-card:hover{border-color:var(--green);box-shadow:var(--shadow);}
.article-content .step-num{
    width:32px;height:32px;border-radius:10px;background:var(--green);
    color:#fff;display:flex;align-items:center;justify-content:center;
    font-weight:700;font-size:0.9rem;flex-shrink:0;
}
.article-content .step-body{flex:1;}
.article-content .step-body strong{display:block;font-size:0.95rem;color:var(--dark);margin-bottom:4px;}
.article-content .step-body p{font-size:0.88rem;margin:0;}
.article-content .tip-box{
    background:var(--green-light);border-left:4px solid var(--green);
    border-radius:0 12px 12px 0;padding:14px 20px;margin:20px 0;
    font-size:0.9rem;color:var(--text);
}
.article-content .warn-box{
    background:#fff8e6;border-left:4px solid #f59e0b;
    border-radius:0 12px 12px 0;padding:14px 20px;margin:20px 0;
    font-size:0.9rem;color:var(--text);
}
.article-content .download-cta{
    background:linear-gradient(135deg,var(--green),#00d68f);
    border-radius:var(--radius);padding:28px 32px;text-align:center;color:#fff;margin:28px 0;
}
.article-content .download-cta h4{font-size:1.1rem;margin-bottom:6px;}
.article-content .download-cta p{color:rgba(255,255,255,0.85);font-size:0.9rem;margin-bottom:12px;}
.article-content .download-cta .btn{background:#fff;color:var(--green);}

/* ===== Hero ===== */
.hero{
    padding:150px 0 100px;
    background:linear-gradient(135deg,#e6f9f0 0%,#f7f8fa 100%);
    position:relative;overflow:hidden;
}
.hero::before{
    content:'';position:absolute;top:-50%;right:-10%;width:600px;height:600px;
    background:radial-gradient(circle,var(--green-glow) 0%,transparent 70%);
    border-radius:50%;pointer-events:none;
}
.hero-content{display:flex;align-items:center;justify-content:space-between;gap:40px;}
.hero-text{flex:1;max-width:600px;}
.hero-text h1{
    font-size:3.2rem;margin-bottom:20px;
    background:linear-gradient(90deg,var(--green),#00d68f);
    -webkit-background-clip:text;background-clip:text;color:transparent;
    line-height:1.2;
}
.hero-text p{font-size:1.1rem;color:var(--text2);margin-bottom:30px;line-height:1.7;}
.hero-image{flex:1;text-align:center;animation:float 6s ease-in-out infinite;}
.hero-image img{max-width:100%;max-height:400px;filter:drop-shadow(0 10px 20px rgba(0,0,0,0.1));}
@keyframes float{0%{transform:translateY(0)}50%{transform:translateY(-20px)}100%{transform:translateY(0)}}

.download-buttons{display:flex;gap:20px;margin-bottom:20px;flex-wrap:wrap;}
.btn{
    display:inline-flex;align-items:center;padding:12px 30px;border-radius:50px;
    font-weight:600;text-decoration:none;transition:all .3s;
    box-shadow:0 4px 12px rgba(0,0,0,0.08);position:relative;overflow:hidden;
    border:none;cursor:pointer;font-size:15px;font-family:inherit;
}
.btn::before{
    content:'';position:absolute;top:0;left:-100%;width:100%;height:100%;
    background:linear-gradient(90deg,transparent,rgba(255,255,255,0.25),transparent);
    transition:all .5s;
}
.btn:hover::before{left:100%;}
.btn-primary{background:var(--green);color:var(--white);}
.btn-primary:hover{background:var(--green-dark);transform:translateY(-3px);box-shadow:0 6px 15px rgba(0,184,92,0.3);}
.btn-accent{background:var(--green-dark);color:var(--white);}
.btn-accent:hover{background:#007d3a;transform:translateY(-3px);box-shadow:0 6px 15px rgba(0,184,92,0.3);}
.btn-secondary{background:var(--white);color:var(--green);border:2px solid var(--green);}
.btn-secondary:hover{background:var(--green);color:var(--white);transform:translateY(-3px);}
.btn-icon{margin-right:8px;font-size:1.2rem;}
.hero-features{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px;}
.feature-tag{
    background:rgba(255,255,255,0.85);padding:8px 16px;border-radius:20px;
    font-size:0.85rem;color:var(--text2);box-shadow:0 2px 8px rgba(0,0,0,0.04);
    transition:all .3s;
}
.feature-tag:hover{transform:translateY(-3px);box-shadow:0 6px 12px rgba(0,0,0,0.08);}

/* ===== Features Ring (homepage) ===== */
.features-container{position:relative;height:460px;margin:0 auto;max-width:900px;display:flex;justify-content:center;align-items:center;}
.features-ring{
    position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
    width:380px;height:380px;border-radius:50%;border:2px dashed rgba(0,184,92,0.2);pointer-events:none;
}
.features-center{
    position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
    width:110px;height:110px;background:var(--green);border-radius:50%;
    display:flex;align-items:center;justify-content:center;
    color:white;font-weight:700;font-size:1rem;box-shadow:0 10px 20px rgba(0,184,92,0.3);
    z-index:10;text-align:center;line-height:1.3;
}
.feature-item{
    position:absolute;width:120px;height:120px;border-radius:50%;
    background:white;display:flex;flex-direction:column;align-items:center;justify-content:center;
    box-shadow:var(--shadow);transition:all .3s;cursor:pointer;z-index:5;text-align:center;padding:15px;
}
.feature-item:hover{transform:scale(1.12);box-shadow:var(--shadow-hover);z-index:20;}
.feature-item.active{transform:scale(1.15);box-shadow:0 20px 40px rgba(0,0,0,0.2);z-index:25;border:2px solid var(--green);}
.feature-icon-img{width:40px;height:40px;margin-bottom:8px;}
.feature-item h3{font-size:0.8rem;margin-bottom:2px;color:var(--text);}
.feature-item p{font-size:0.6rem;color:var(--text2);line-height:1.2;}
.feature-description{
    position:absolute;width:300px;padding:24px;background:white;border-radius:16px;
    box-shadow:0 20px 40px rgba(0,0,0,0.1);opacity:0;pointer-events:none;
    transition:all .4s;z-index:30;
}
.feature-description.left{left:0;top:50%;transform:translateY(-50%);}
.feature-description.right{right:0;top:50%;transform:translateY(-50%);}
.feature-description.active{opacity:1;}
.feature-description h3{font-size:1.2rem;margin-bottom:10px;color:var(--green);}
.feature-description p{color:var(--text2);line-height:1.6;margin-bottom:15px;font-size:0.9rem;}
.feature-description .btn{padding:8px 20px;font-size:0.85rem;}

/* ===== Security Tabs ===== */
.security{padding:80px 0;background:linear-gradient(135deg,#e6f9f0 0%,#f7f8fa 100%);}
.security-tabs{display:flex;gap:10px;margin-bottom:40px;flex-wrap:wrap;justify-content:center;}
.tab-btn{
    padding:12px 25px;background:var(--white);border:none;border-radius:50px;
    font-weight:600;color:var(--text2);cursor:pointer;transition:all .3s;
    box-shadow:0 2px 8px rgba(0,0,0,0.04);font-size:14px;font-family:inherit;
}
.tab-btn.active{background:var(--green);color:var(--white);}
.tab-btn:hover:not(.active){background:var(--green-light);color:var(--green);}
.tab-content{display:none;animation:fadeIn .5s ease;}
.tab-content.active{display:block;}
@keyframes fadeIn{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
.security-feature{
    display:flex;align-items:center;gap:50px;
    background:var(--white);border-radius:20px;padding:40px;box-shadow:var(--shadow);
}
.security-text{flex:1;}
.security-text h3{font-size:1.6rem;margin-bottom:16px;color:var(--dark);}
.security-text p{color:var(--text2);line-height:1.7;margin-bottom:20px;font-size:0.95rem;}
.security-image{flex:1;text-align:center;}
.security-image img{max-width:100%;border-radius:10px;box-shadow:0 10px 30px rgba(0,0,0,0.1);max-height:320px;}
.security-features-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-bottom:20px;}
.security-feature-item{display:flex;align-items:center;gap:10px;}
.security-feature-icon{
    width:24px;height:24px;background:var(--green-light);border-radius:50%;
    display:flex;align-items:center;justify-content:center;
    color:var(--green);font-size:0.75rem;flex-shrink:0;
}
.security-feature-text{font-size:0.9rem;color:var(--text2);}

/* ===== Stats ===== */
.stats{padding:80px 0;background:var(--white);}
.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:30px;}
.stat-card{
    text-align:center;padding:36px 20px;border-radius:16px;
    background:var(--green-light);transition:all .3s;
}
.stat-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);}
.stat-number{font-size:3rem;font-weight:700;color:var(--green);margin-bottom:8px;display:flex;align-items:center;justify-content:center;}
.stat-number .unit{font-size:1.4rem;margin-left:4px;}
.stat-label{color:var(--text2);font-size:1rem;}

/* ===== FAQ ===== */
.faq{padding:80px 0;background:linear-gradient(135deg,#f7f8fa 0%,#e6f9f0 100%);}
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;max-width:860px;margin:0 auto;}
.faq-item{
    background:var(--white);border-radius:14px;box-shadow:0 4px 14px rgba(0,0,0,0.04);
    overflow:hidden;transition:all .3s;border:1px solid var(--border);
}
.faq-item:hover{
    box-shadow:var(--shadow-hover);border-color:rgba(0,184,92,0.2);transform:translateY(-2px);
}
.faq-link{display:flex;align-items:center;padding:20px 22px;text-decoration:none;color:var(--dark);gap:16px;}
.faq-link:hover{color:var(--green);}
.faq-link .ficon{
    width:50px;height:50px;border-radius:14px;display:flex;align-items:center;justify-content:center;
    font-size:22px;flex-shrink:0;box-shadow:0 3px 10px rgba(0,0,0,0.05);transition:transform .25s;
}
.faq-item:hover .ficon{transform:scale(1.08);}
.faq-link .ficon.green{background:linear-gradient(135deg,rgba(0,184,92,0.12),rgba(0,184,92,0.22));color:var(--green);}
.faq-link .ficon.blue{background:linear-gradient(135deg,rgba(0,184,92,0.12),rgba(0,184,92,0.22));color:var(--green);}
.faq-link .ficon.orange{background:linear-gradient(135deg,rgba(255,152,0,0.12),rgba(255,152,0,0.22));color:#f57c00;}
.faq-link .ficon.purple{background:linear-gradient(135deg,rgba(156,39,176,0.10),rgba(156,39,176,0.20));color:#7b1fa2;}
.faq-link .ficon.red{background:linear-gradient(135deg,rgba(244,67,54,0.10),rgba(244,67,54,0.20));color:#d32f2f;}
.faq-link .ficon.teal{background:linear-gradient(135deg,rgba(0,150,136,0.10),rgba(0,150,136,0.22));color:#00897b;}
.faq-link-text{flex:1;}
.faq-link-text h4{font-size:15px;font-weight:600;margin:0 0 3px;color:var(--dark);}
.faq-link-text span{font-size:12.5px;color:var(--text3);}
.faq-link .farrow{color:#d0d8e5;font-size:14px;flex-shrink:0;transition:transform .25s,color .25s;}
.faq-item:hover .farrow{transform:translateX(5px);color:var(--green);}

/* ===== Help Preview Grid ===== */
.help-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.help-card{
    background:var(--white);border-radius:var(--radius);padding:28px 24px;
    border:1px solid var(--border);transition:all .3s;
}
.help-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--green);}
.help-card .cat{font-size:12px;color:var(--green);font-weight:600;margin-bottom:8px;}
.help-card h4{font-size:16px;font-weight:700;margin-bottom:8px;color:var(--dark);}
.help-card p{font-size:14px;color:var(--text2);line-height:1.6;margin-bottom:14px;}
.help-card a{display:inline-flex;align-items:center;gap:4px;color:var(--green);font-size:14px;font-weight:600;text-decoration:none;}
.help-card a:hover{text-decoration:underline;}

/* ===== Category Grid (help.html page) ===== */
.cat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.cat-card{
    background:var(--white);border-radius:var(--radius);border:1px solid var(--border);
    overflow:hidden;transition:all .3s;
}
.cat-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);border-color:var(--green);}
.cat-card-header{padding:24px 24px 16px;display:flex;align-items:center;gap:14px;border-bottom:1px solid #f0f0f0;}
.cat-card-header .icon{
    font-size:32px;width:48px;height:48px;border-radius:14px;
    display:flex;align-items:center;justify-content:center;flex-shrink:0;
    background:var(--green-light);color:var(--green);
}
.cat-card-header .info h4{font-size:16px;font-weight:700;color:var(--dark);}
.cat-card-header .info p{font-size:13px;color:var(--text3);margin-top:2px;}
.cat-card-body{padding:8px 24px 14px;}
.cat-card-body a{
    display:flex;justify-content:space-between;align-items:center;
    padding:10px 0;text-decoration:none;color:var(--text2);font-size:14px;
    border-bottom:1px solid #f5f5f5;transition:color .2s;
}
.cat-card-body a:hover{color:var(--green);}
.cat-card-body a:last-child{border-bottom:none;}
.cat-card-body a::after{content:'→';color:var(--text3);font-size:12px;transition:transform .2s,color .2s;}
.cat-card-body a:hover::after{transform:translateX(3px);color:var(--green);}

/* ===== Feature Grid ===== */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.feature-card{
    background:var(--white);border-radius:var(--radius);padding:30px 24px;
    border:1px solid var(--border);transition:all .3s;text-align:center;
}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--green);}
.feature-card .ficon2{
    font-size:32px;width:60px;height:60px;border-radius:16px;
    display:flex;align-items:center;justify-content:center;
    margin:0 auto 16px;background:var(--green-light);color:var(--green);
}
.feature-card h4{font-size:1.1rem;font-weight:700;margin-bottom:8px;color:var(--dark);}
.feature-card p{font-size:0.9rem;color:var(--text2);line-height:1.6;}

/* ===== Breadcrumb Row (help.html) ===== */
.breadcrumb-row{padding:16px 0;font-size:0.85rem;color:var(--text2);}
.breadcrumb-row a{color:var(--green);text-decoration:none;font-weight:500;}
.breadcrumb-row a:hover{text-decoration:underline;}
.breadcrumb-row .sep{margin:0 8px;color:var(--text3);}

/* ===== Download Section ===== */
.download-section{
    padding:80px 0;text-align:center;
    background:linear-gradient(180deg,var(--green-light),var(--white));
}
.download-section h2{font-size:2rem;font-weight:800;color:var(--dark);margin-bottom:12px;}
.download-section p{color:var(--text2);margin-bottom:28px;}

/* ===== Footer ===== */
.pc-footer{
    background:var(--dark);color:rgba(255,255,255,0.7);padding:48px 0 24px;
    border-radius:40px 40px 0 0;margin-top:auto;
}
.pc-footer .container{max-width:var(--max-w);margin:0 auto;padding:0 24px;}
.pc-footer .footer-grid{display:flex;flex-wrap:wrap;justify-content:space-between;gap:40px;margin-bottom:36px;}
.pc-footer h4{color:#fff;margin-bottom:16px;font-size:1rem;font-weight:600;}
.pc-footer a{color:rgba(255,255,255,0.6);text-decoration:none;font-size:0.85rem;display:block;margin:6px 0;transition:color .2s;}
.pc-footer a:hover{color:var(--green);}
.pc-footer .copyright{text-align:center;border-top:1px solid rgba(255,255,255,0.1);padding-top:20px;font-size:0.75rem;color:rgba(255,255,255,0.4);}

/* ===== Footer (old class name) ===== */
.footer{background:var(--dark);color:rgba(255,255,255,0.7);padding:48px 0 24px;margin-top:auto;}
.footer .container{max-width:var(--max-w);margin:0 auto;padding:0 24px;}
.footer .footer-bottom{text-align:center;}
.footer .footer-bottom a{color:rgba(255,255,255,0.5);text-decoration:none;font-size:0.85rem;margin:0 8px;transition:color .2s;}
.footer .footer-bottom a:hover{color:var(--green);}
.footer .footer-extra{font-size:0.72rem;color:rgba(255,255,255,0.35);margin-top:10px;}
.footer .footer-extra a{color:rgba(255,255,255,0.35);text-decoration:none;}

/* ===== Back to Top ===== */
.back-top{position:fixed;bottom:30px;right:30px;width:44px;height:44px;border-radius:50%;background:var(--green);color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.2rem;cursor:pointer;opacity:0;pointer-events:none;transition:all .3s;box-shadow:0 4px 12px var(--green-glow);z-index:999;}
.back-top.show{opacity:1;pointer-events:auto;}
.back-top:hover{transform:translateY(-3px);box-shadow:0 6px 20px rgba(0,184,92,0.4);}

/* ===== Article Wrap ===== */
.article-wrap{flex:1;min-width:0;background:var(--white);border-radius:var(--radius);padding:32px 36px;box-shadow:var(--shadow);}
.article-wrap h2{font-size:1.4rem;font-weight:700;color:var(--dark);margin:28px 0 14px;display:flex;align-items:center;gap:10px;}
.article-wrap h2:first-of-type{margin-top:0;}
.article-wrap h3{font-size:1.1rem;font-weight:600;color:var(--dark);margin:20px 0 10px;}
.article-wrap p{color:var(--text2);margin-bottom:12px;line-height:1.8;}
.article-wrap ul,.article-wrap ol{margin:8px 0 18px 24px;color:var(--text2);}
.article-wrap li{margin-bottom:6px;line-height:1.7;}
.article-wrap a{color:var(--green);text-decoration:none;}
.article-wrap a:hover{text-decoration:underline;}
.article-wrap code{background:var(--green-light);padding:2px 8px;border-radius:4px;font-size:0.88rem;color:var(--green);}

/* ===== Step Box ===== */
.step-box{margin:16px 0 24px;display:flex;flex-direction:column;gap:10px;}
.step{display:flex;align-items:flex-start;gap:14px;padding:16px 18px;background:var(--bg);border-radius:10px;border:1px solid var(--border);transition:var(--transition);}
.step:hover{border-color:var(--green);box-shadow:var(--shadow);}
.step .step-num{width:32px;height:32px;border-radius:8px;background:var(--green);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:0.85rem;flex-shrink:0;}
.step .step-text{flex:1;font-size:0.92rem;color:var(--text);line-height:1.7;padding-top:4px;}
.step .step-text strong{color:var(--dark);}

/* ===== Tip/Warn Box ===== */
.tip-box{display:flex;align-items:flex-start;gap:12px;background:var(--green-light);border-left:4px solid var(--green);border-radius:0 10px 10px 0;padding:14px 18px;margin:20px 0;}
.tip-box i{color:var(--green);font-size:1.1rem;margin-top:2px;flex-shrink:0;}
.tip-box .tb{flex:1;font-size:0.9rem;color:var(--text);line-height:1.7;}
.warn-box{display:flex;align-items:flex-start;gap:12px;background:#fff8e6;border-left:4px solid #f59e0b;border-radius:0 10px 10px 0;padding:14px 18px;margin:20px 0;}
.warn-box i{color:#f59e0b;font-size:1.1rem;margin-top:2px;flex-shrink:0;}
.warn-box .wb{flex:1;font-size:0.9rem;color:var(--text);line-height:1.7;}

/* ===== Image Placeholder ===== */
.img-placeholder{display:flex;align-items:center;gap:10px;padding:20px 24px;background:var(--green-light);border-radius:12px;margin-bottom:24px;color:var(--green);font-size:0.95rem;}
.img-placeholder i{font-size:1.5rem;}
.img-placeholder a{color:var(--green-dark);font-weight:600;text-decoration:underline;}

/* ===== Related Articles ===== */
.related-section{margin-top:40px;padding-top:32px;border-top:2px solid var(--green-light);}
.related-section h3{font-size:1.1rem;font-weight:700;color:var(--dark);margin-bottom:16px;display:flex;align-items:center;gap:8px;}
.related-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;}
.related-grid a{display:flex;align-items:center;gap:8px;padding:10px 16px;background:var(--bg);border-radius:8px;font-size:0.88rem;color:var(--text);text-decoration:none;transition:var(--transition);border:1px solid var(--border);}
.related-grid a:hover{border-color:var(--green);color:var(--green);background:var(--green-light);}
.related-grid a i{color:var(--green);}

/* ===== Sidebar active state ===== */
.help-sidebar .sidebar-cat-body a.active{color:var(--green);font-weight:600;background:var(--green-light);}

/* Remove old article-content unused styles that conflict */
.article-content{display:none;}

/* ===== Search ===== */
.search-wrap{padding:0 24px 48px;}
.search-box{max-width:600px;margin:0 auto;display:flex;background:var(--white);border-radius:50px;box-shadow:var(--shadow);overflow:hidden;border:1px solid var(--border);}
.search-box input{flex:1;border:none;padding:14px 24px;font-size:0.95rem;outline:none;font-family:inherit;}
.search-box button{background:var(--green);color:#fff;border:none;padding:14px 28px;font-weight:600;cursor:pointer;font-size:0.9rem;transition:var(--transition);font-family:inherit;}
.search-box button:hover{background:var(--green-dark);}

/* ===== Cat card extras ===== */
.cat-more{display:block;font-size:0.75rem;color:var(--green);margin-top:4px;font-weight:500;}
.arrow{font-size:0.75rem;color:var(--text3);transition:transform .2s;}
.cat-card-body a:hover .arrow{transform:translateX(3px);color:var(--green);}
.fade-in{animation:fadeIn .6s ease both;}

/* ===== Icon in cat-card-header (direct on i) ===== */
.cat-card-header i.icon,.cat-card-header .icon{font-size:28px;width:48px;height:48px;border-radius:14px;display:flex;align-items:center;justify-content:center;flex-shrink:0;background:var(--green-light);color:var(--green);}

/* ===== Contact Grid ===== */
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:10px;}
.contact-card{background:var(--white);border-radius:var(--radius);padding:32px 24px;text-align:center;border:1px solid var(--border);transition:var(--transition);}
.contact-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--green);}
.contact-card .icon{font-size:2rem;margin-bottom:12px;display:block;}
.contact-card h4{font-size:1.1rem;font-weight:700;color:var(--dark);margin-bottom:8px;}
.contact-card p{font-size:0.88rem;color:var(--text2);line-height:1.6;margin-bottom:16px;}
.contact-card .btn-outline{display:inline-block;padding:8px 20px;border:1.5px solid var(--green);border-radius:7px;color:var(--green);font-weight:600;text-decoration:none;font-size:0.85rem;transition:var(--transition);}
.contact-card .btn-outline:hover{background:var(--green);color:#fff;}
@media(max-width:768px){.contact-grid{grid-template-columns:1fr}}

/* ===== Responsive ===== */
@media(max-width:900px){
    .sidebar-layout{flex-direction:column;}
    .help-sidebar{width:100%;position:static;}
    .cat-grid,.help-grid,.feature-grid{grid-template-columns:1fr 1fr;}
    .faq-grid{grid-template-columns:1fr;}
    .hero-content{flex-direction:column;text-align:center;}
    .hero-text h1{font-size:2.2rem;}
    .security-feature{flex-direction:column;gap:30px;}
}
@media(max-width:560px){
    .cat-grid,.help-grid,.feature-grid{grid-template-columns:1fr;}
    .hero-text h1{font-size:1.6rem;}
}