*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Inter','Noto Sans SC','Microsoft YaHei',sans-serif;background:#0a0a0f;color:#f3f4f6;overflow-x:hidden;line-height:1.7}
::selection{background:rgba(245,158,11,.3);color:#fff}

/* Grid */
.bg-grid{position:fixed;inset:0;pointer-events:none;z-index:0;background-image:linear-gradient(rgba(245,158,11,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(245,158,11,.03) 1px,transparent 1px);background-size:80px 80px;-webkit-mask-image:radial-gradient(ellipse 70% 50% at 50% 0%,#000 30%,transparent 70%);mask-image:radial-gradient(ellipse 70% 50% at 50% 0%,#000 30%,transparent 70%)}

/* Glow orbs */
.glow-orb{position:fixed;border-radius:50%;filter:blur(140px);opacity:.18;pointer-events:none;z-index:0}
.glow-orb-1{width:500px;height:500px;background:radial-gradient(circle,#f59e0b,transparent 70%);top:-150px;right:-100px}
.glow-orb-2{width:400px;height:400px;background:radial-gradient(circle,#10b981,transparent 70%);bottom:-100px;left:-100px}

/* Header */
.header{position:sticky;top:0;z-index:50;background:rgba(10,10,15,.85);backdrop-filter:blur(12px);border-bottom:1px solid #2a2a3a}
.header-inner{max-width:1280px;margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;height:64px}
.header-logo{display:flex;align-items:center;gap:10px;text-decoration:none;font-size:18px;font-weight:700;color:#f3f4f6}
.header-logo:hover{color:#fbbf24}
.header-logo span{font-size:28px}
.header-nav{display:flex;gap:4px}
.header-nav a{padding:8px 14px;border-radius:10px;font-size:14px;font-weight:500;color:#9ca3af;text-decoration:none;transition:all .2s}
.header-nav a:hover,.header-nav a.active{color:#fbbf24;background:rgba(245,158,11,.1)}

/* Container */
.container{max-width:1280px;margin:0 auto;padding:0 24px;position:relative;z-index:10}

/* Sections */
.hero{text-align:center;padding:80px 20px 60px;background:radial-gradient(ellipse 100% 100% at 50% 0%,rgba(245,158,11,.08) 0%,transparent 60%)}
.hero-badge{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:500;color:#fbbf24;background:rgba(245,158,11,.1);padding:6px 18px;border-radius:999px;margin-bottom:24px;border:1px solid #3d2a0a}
.hero h1{font-size:clamp(2rem,5vw,3rem);font-weight:800;margin-bottom:16px;line-height:1.2}
.hero h1 span{background:linear-gradient(135deg,#f59e0b,#fbbf24 40%,#10b981);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero p{color:#9ca3af;font-size:16px;max-width:500px;margin:0 auto 28px;line-height:1.6}
.hero-btns{display:flex;flex-wrap:wrap;justify-content:center;gap:12px}
.btn-primary{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;background:#f59e0b;color:#000;font-weight:600;border-radius:12px;text-decoration:none;font-size:15px;transition:all .3s;box-shadow:0 0 20px rgba(245,158,11,.25)}
.btn-primary:hover{background:#fbbf24;transform:translateY(-1px)}
.btn-secondary{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;background:#14141c;border:1px solid #2a2a3a;color:#f3f4f6;font-weight:600;border-radius:12px;text-decoration:none;font-size:15px;transition:all .3s}
.btn-secondary:hover{border-color:#f59e0b}

/* Section title */
.section-title{text-align:center;margin-bottom:32px}
.accent-line{width:48px;height:3px;background:linear-gradient(90deg,#f59e0b,#10b981);border-radius:2px;margin:0 auto 12px}
.section-title h2{font-size:1.5rem;font-weight:700;color:#f3f4f6}
.section-title p{color:#6b7280;font-size:14px;margin-top:6px}

/* Category grid */
.cat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px;padding:0 0 48px}
.cat-card{display:flex;flex-direction:column;align-items:center;gap:10px;padding:24px 16px;background:#16161f;border:1px solid #2a2a3a;border-radius:14px;text-decoration:none;text-align:center;transition:all .3s}
.cat-card:hover{border-color:#f59e0b;box-shadow:0 0 30px rgba(245,158,11,.25);transform:translateY(-2px)}
.cat-card .icon{font-size:36px;transition:transform .3s}
.cat-card:hover .icon{transform:scale(1.1)}
.cat-card .name{font-size:14px;font-weight:600;color:#f3f4f6}
.cat-card:hover .name{color:#fbbf24}
.cat-card .desc{font-size:12px;color:#6b7280;display:none}
@media(min-width:640px){.cat-card .desc{display:block}}

/* Guide cards */
.guide-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px;padding:0 0 48px}
.guide-card{display:block;padding:20px;background:#16161f;border:1px solid #2a2a3a;border-radius:14px;text-decoration:none;transition:all .3s}
.guide-card:hover{border-color:#f59e0b;box-shadow:0 0 30px rgba(245,158,11,.25);transform:translateY(-2px)}
.guide-card .meta{display:flex;align-items:center;gap:8px;margin-bottom:10px}
.guide-card .cat-tag{font-size:12px;font-weight:500;color:#fbbf24;background:rgba(245,158,11,.1);padding:2px 10px;border-radius:999px}
.guide-card h3{font-size:16px;font-weight:600;color:#f3f4f6;margin-bottom:8px;line-height:1.5}
.guide-card:hover h3{color:#fbbf24}
.guide-card .desc{font-size:14px;color:#6b7280;line-height:1.5;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.guide-card .date{font-size:12px;color:#6b7280}

/* Feature row */
.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;padding:0 0 48px}
.feature-card{padding:24px;background:#16161f;border:1px solid #2a2a3a;border-radius:14px}
.feature-card .icon{font-size:28px;margin-bottom:12px}
.feature-card h3{font-size:14px;font-weight:600;color:#f3f4f6;margin-bottom:4px}
.feature-card p{font-size:12px;color:#6b7280}

/* Article page */
.article-header{margin-bottom:32px}
.breadcrumb{display:flex;align-items:center;gap:6px;font-size:13px;color:#6b7280;margin-bottom:20px}
.breadcrumb a{color:#6b7280;text-decoration:none}
.breadcrumb a:hover{color:#fbbf24}
.article-header h1{font-size:clamp(1.5rem,3vw,2rem);font-weight:700;color:#f3f4f6;margin-bottom:10px;line-height:1.3}
.article-header .desc{color:#9ca3af;font-size:15px}
.article-header .date{color:#6b7280;font-size:13px;margin-top:6px}
.article-header .accent-line{margin:16px 0 0}

/* Guide content */
.guide-content{max-width:780px}
.guide-content h2{font-size:1.5rem;font-weight:700;margin:2rem 0 1rem;color:#fbbf24;border-left:3px solid #f59e0b;padding-left:1rem}
.guide-content h3{font-size:1.2rem;font-weight:600;margin:1.5rem 0 .75rem;color:#f3f4f6}
.guide-content h4{font-size:1.05rem;font-weight:600;margin:1.25rem 0 .5rem;color:#fbbf24}
.guide-content p{margin-bottom:1rem;color:#9ca3af}
.guide-content ul,.guide-content ol{margin:.75rem 0 1rem 1.5rem;color:#9ca3af}
.guide-content li{margin-bottom:.5rem}
.guide-content li::marker{color:#f59e0b}
.guide-content strong{color:#fbbf24;font-weight:600}
.guide-content blockquote{border-left:3px solid #f59e0b;background:rgba(245,158,11,.05);padding:1rem 1.25rem;margin:1.25rem 0;color:#9ca3af;font-style:italic;border-radius:0 8px 8px 0}
.guide-content code{background:#14141c;color:#fbbf24;padding:.15em .4em;border-radius:4px;font-size:.9em}
.guide-content table{width:100%;border-collapse:collapse;margin:1.25rem 0;font-size:.95rem}
.guide-content th{background:#14141c;color:#fbbf24;padding:.75rem 1rem;text-align:left;border-bottom:2px solid #3d2a0a}
.guide-content td{padding:.75rem 1rem;border-bottom:1px solid #2a2a3a;color:#9ca3af}
.guide-content tr:hover td{background:#14141c}
.guide-content img{border-radius:8px;margin:1rem 0;max-width:100%}

/* Empty state */
.empty-state{padding:80px 24px;text-align:center;background:#16161f;border:1px solid #2a2a3a;border-radius:14px}
.empty-state .icon{font-size:40px;margin-bottom:16px}
.empty-state p{color:#9ca3af}
.empty-state .sub{color:#6b7280;font-size:13px;margin-top:4px}

/* Footer */
.footer{border-top:1px solid #2a2a3a;background:rgba(20,20,28,.5);margin-top:80px;position:relative;z-index:10}
.footer-inner{max-width:1280px;margin:0 auto;padding:32px 24px;display:flex;flex-direction:column;align-items:center;gap:12px;text-align:center}
@media(min-width:640px){.footer-inner{flex-direction:row;justify-content:space-between;text-align:left}}
.footer-info{display:flex;align-items:center;gap:8px;font-size:13px;color:#6b7280}
.footer-links{display:flex;gap:20px;font-size:13px}
.footer-links a{color:#6b7280;text-decoration:none}
.footer-links a:hover{color:#fbbf24}

/* Sidebar */
.side-layout{display:flex;flex-direction:column;gap:32px;padding:32px 0}
@media(min-width:1024px){.side-layout{flex-direction:row;gap:40px}}
.sidebar{flex-shrink:0}
@media(min-width:1024px){.sidebar{width:240px;position:sticky;top:88px;align-self:flex-start}}
.side-widget{background:#14141c;border:1px solid #2a2a3a;border-radius:12px;padding:16px;margin-bottom:16px}
.side-widget .label{font-size:11px;font-weight:600;color:#6b7280;text-transform:uppercase;letter-spacing:.5px;margin-bottom:10px}
.side-widget a{display:flex;align-items:center;gap:8px;padding:6px 10px;border-radius:8px;font-size:13px;color:#9ca3af;text-decoration:none;transition:all .2s}
.side-widget a:hover,.side-widget a.active{color:#fbbf24;background:rgba(245,158,11,.1)}
.main-area{flex:1;min-width:0}

/* Loading */
.loading{padding:0 0 48px}
.loading .guide-card{padding:80px 20px;text-align:center}
.loading .guide-card .icon{font-size:40px;margin-bottom:12px}
.loading .guide-card p{color:#9ca3af}
.loading .guide-card .sub{color:#6b7280;font-size:13px;margin-top:4px}