:root{--primary:#ea580c;--primary-dark:#c2410c;--accent:#f97316;--ink:#111827;--muted:#64748b;--soft:#fff7ed;--soft2:#fffaf5;--border:#fed7aa;--header-height:74px;--max:1180px;--content:820px;--shadow:0 18px 50px rgba(194,65,12,.14)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;padding-top:var(--header-height);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:#fff;line-height:1.72}a{color:var(--primary);text-underline-offset:3px}.site-header{position:fixed;top:0;left:0;right:0;height:var(--header-height);background:rgba(255,255,255,.94);backdrop-filter:blur(16px);border-bottom:1px solid #fed7aa;z-index:100}.header-inner{max-width:var(--max);height:100%;margin:auto;padding:0 22px;display:flex;align-items:center;justify-content:space-between;gap:16px}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:900;min-width:0}.brand-mark{width:38px;height:38px;border-radius:13px;display:grid;place-items:center;box-shadow:0 10px 28px rgba(234,88,12,.18);overflow:hidden;background:#fff;border:1px solid var(--border);flex:0 0 38px}.brand-mark img{width:100%;height:100%;object-fit:contain;display:block}.nav{display:flex;align-items:center;gap:4px}.nav a{text-decoration:none;color:#475569;font-weight:750;font-size:.94rem;padding:9px 13px;border-radius:999px}.nav a:hover,.nav a.active{color:var(--primary-dark);background:var(--soft)}.nav .nav-cta{background:var(--primary);color:#fff}.nav .nav-cta:hover{background:var(--primary-dark);color:#fff}.theme-toggle{border:1px solid var(--border);background:#fff;border-radius:12px;padding:8px 10px;cursor:pointer}.nav-toggle{display:none;border:0;background:var(--soft);border-radius:12px;padding:9px;cursor:pointer;position:relative}.nav-toggle span{display:block;width:24px;height:2px;background:var(--ink);margin:5px;border-radius:2px;transition:transform .22s ease,opacity .16s ease}.nav-toggle.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}.nav-toggle.active span:nth-child(2){opacity:0}.nav-toggle.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}.mobile-nav-backdrop{position:fixed;inset:var(--header-height) 0 0;background:rgba(2,6,23,.48);backdrop-filter:blur(4px);opacity:0;pointer-events:none;transition:opacity .25s ease;z-index:88}.mobile-nav-backdrop.open{opacity:1;pointer-events:auto}body.nav-open{overflow:hidden}.section{padding:72px 22px}.section-alt{background:linear-gradient(180deg,#fffaf5,#fff7ed)}.container{max-width:var(--max);margin:auto}.content{max-width:var(--content);margin:auto}.hero{display:grid;grid-template-columns:1.02fr .98fr;gap:46px;align-items:center;min-height:620px}.eyebrow{display:inline-flex;align-items:center;gap:8px;background:var(--soft);color:var(--primary-dark);border:1px solid var(--border);padding:8px 14px;border-radius:999px;font-weight:850;font-size:.9rem}.hero h1{font-size:clamp(2.2rem,5vw,4.9rem);line-height:.98;margin:18px 0;color:#431407;letter-spacing:-.06em}.hero h1 span{background:linear-gradient(120deg,var(--primary),#dc2626);-webkit-background-clip:text;background-clip:text;color:transparent}.lead{font-size:1.16rem;color:var(--muted);max-width:640px}.hero-actions,.actions{display:flex;flex-wrap:wrap;gap:13px;margin-top:28px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;text-decoration:none;border-radius:15px;font-weight:900;padding:13px 22px;border:1px solid transparent}.btn-primary{background:var(--primary);color:#fff;box-shadow:0 12px 30px rgba(234,88,12,.25)}.btn-primary:hover{background:var(--primary-dark);color:#fff}.btn-secondary{background:#fff;color:var(--primary-dark);border-color:#fdba74}.hero-art img{width:100%;height:auto;border-radius:28px;box-shadow:var(--shadow);border:1px solid var(--border)}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:34px}.stat{background:#fff;border:1px solid var(--border);border-radius:18px;padding:18px;box-shadow:0 8px 28px rgba(194,65,12,.08)}.stat strong{display:block;font-size:1.6rem;color:var(--primary-dark)}.section-title{text-align:center;font-size:clamp(1.8rem,3vw,3rem);line-height:1.05;margin:0 0 12px;letter-spacing:-.04em}.section-subtitle{text-align:center;color:var(--muted);max-width:760px;margin:0 auto 42px;font-size:1.05rem}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.category-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.card,.cat-card,.guide-card{background:#fff;border:1px solid #e2e8f0;border-radius:22px;padding:24px;box-shadow:0 10px 35px rgba(2,6,23,.05)}.cat-card,.guide-card{text-decoration:none;color:var(--ink);transition:.18s}.cat-card:hover,.guide-card:hover{transform:translateY(-3px);border-color:#fb923c;box-shadow:var(--shadow)}.icon{font-size:2rem}.tag{display:inline-block;color:var(--primary-dark);background:var(--soft);border:1px solid var(--border);border-radius:999px;padding:4px 10px;font-weight:850;font-size:.78rem}.card h3,.cat-card h3,.guide-card h3{margin:12px 0 8px;font-size:1.18rem}.card p,.cat-card p,.guide-card p{color:var(--muted);margin:0}.steps{counter-reset:step;display:grid;gap:18px}.step{counter-increment:step;display:grid;grid-template-columns:60px 1fr;gap:18px;align-items:start}.step:before{content:counter(step);height:52px;width:52px;border-radius:18px;display:grid;place-items:center;background:linear-gradient(135deg,var(--primary),#dc2626);color:#fff;font-weight:900;font-size:1.25rem}.article{max-width:var(--content);margin:auto}.article h1{font-size:clamp(2rem,4vw,3.4rem);line-height:1.06;letter-spacing:-.04em}.article h2{font-size:1.65rem;margin-top:36px}.article p,.article li{color:#475569}.article-meta{color:var(--muted);font-weight:700}.toc{background:var(--soft2);border:1px solid #e2e8f0;border-radius:20px;padding:22px;margin:28px 0}.tip,.warning{border-radius:18px;padding:18px 20px;margin:22px 0}.tip{background:#fff7ed;border:1px solid #fdba74}.warning{background:#fffbeb;border:1px solid #fde68a}.faq{max-width:900px;margin:auto;display:grid;gap:12px}.faq-item{border:1px solid #e2e8f0;border-radius:18px;background:#fff;overflow:hidden}.faq-question{width:100%;border:0;background:#fff;text-align:left;padding:18px 20px;font:inherit;font-weight:900;color:var(--ink);display:flex;justify-content:space-between;gap:16px;cursor:pointer}.faq-answer{max-height:0;overflow:hidden;transition:max-height .3s ease,padding .3s ease}.faq-item.open .faq-answer{max-height:420px;padding:0 20px 18px}.faq-item.open .faq-icon{transform:rotate(45deg)}.faq-icon{transition:.25s}.breadcrumbs{max-width:var(--max);margin:22px auto 0;padding:0 22px;color:var(--muted);font-size:.92rem}.breadcrumbs a{text-decoration:none;font-weight:800}.cta{max-width:980px;margin:auto;background:linear-gradient(135deg,#7c2d12,#ea580c 56%,#dc2626);border-radius:34px;color:#fff;padding:54px 30px;text-align:center;box-shadow:var(--shadow)}.cta h2{font-size:clamp(1.9rem,4vw,3.2rem);line-height:1.05;margin:0 0 12px}.cta p{color:#ffedd5}.site-footer{background:#431407;color:#ffedd5;padding:58px 22px 28px}.footer-grid{max-width:var(--max);margin:auto;display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px}.site-footer a{display:block;color:#fed7aa;text-decoration:none;margin:7px 0}.footer-bottom{max-width:var(--max);margin:30px auto 0;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);color:#fdba74;font-size:.9rem}.back-to-top{position:fixed;right:20px;bottom:20px;border:0;background:var(--primary);color:#fff;border-radius:50%;width:46px;height:46px;font-weight:900;opacity:0;pointer-events:none;transition:.2s}.back-to-top.visible{opacity:1;pointer-events:auto}body.dark{background:#020617;color:#e2e8f0}body.dark .site-header,body.dark .card,body.dark .cat-card,body.dark .guide-card,body.dark .faq-item,body.dark .faq-question,body.dark .stat{background:#0f172a;color:#e2e8f0;border-color:#1e293b}body.dark .section-alt{background:#111827}body.dark .lead,body.dark p,body.dark li,body.dark .section-subtitle{color:#94a3b8}@media(max-width:980px){.hero{grid-template-columns:1fr;min-height:auto;text-align:center}.hero-actions{justify-content:center}.stats{grid-template-columns:repeat(2,1fr)}.category-grid,.grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1fr 1fr}.nav{position:fixed;top:calc(var(--header-height) + 12px);left:14px;right:14px;max-height:calc(100vh - var(--header-height) - 28px);overflow:auto;background:rgba(255,255,255,.98);border:1px solid var(--border);border-radius:24px;box-shadow:0 24px 70px rgba(2,6,23,.22);flex-direction:column;align-items:stretch;padding:14px;gap:8px;transform:translateY(-18px) scale(.96);opacity:0;pointer-events:none;transition:transform .24s ease,opacity .2s ease;z-index:99}.nav.open{transform:translateY(0) scale(1);opacity:1;pointer-events:auto}.nav a{padding:15px 16px;border-radius:16px;font-size:1.02rem;background:#fffaf5}.nav a.active{background:#fff7ed}.nav .nav-cta{text-align:center;margin-top:4px;padding:16px 18px}.nav-toggle{display:block;z-index:120}.theme-toggle{z-index:120}body.dark .nav{background:rgba(15,23,42,.98);border-color:#1e293b}body.dark .nav a{background:#111827;color:#cbd5e1}}@media(max-width:560px){.site-header{height:68px}.section{padding:48px 16px}.category-grid,.grid,.stats{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.step{grid-template-columns:1fr}.hero h1{font-size:2.25rem}.header-inner{height:68px;gap:8px;padding:0 12px}.brand{gap:8px;flex:1}.brand-mark{width:34px;height:34px;border-radius:11px;flex:0 0 34px}.brand span:last-child{display:inline-block;font-size:.95rem;white-space:nowrap;max-width:170px;overflow:hidden;text-overflow:ellipsis}.theme-toggle{width:38px;height:38px;padding:0;display:grid;place-items:center;flex:0 0 38px}.nav-toggle{width:40px;height:40px;padding:6px;flex:0 0 40px}.nav-toggle span{width:22px;margin:5px auto}.nav{top:calc(68px + 10px);max-height:calc(100vh - 88px)}}@media(max-width:390px){.brand span:last-child{max-width:135px;font-size:.88rem}.header-inner{gap:6px;padding:0 10px}.theme-toggle{width:36px;height:36px;flex-basis:36px}.nav-toggle{width:38px;height:38px;flex-basis:38px}}