:root{color-scheme:dark;--bg:#0b0c10;--surface:#151821;--surface2:#1e212b;--text:#f7f7f5;--muted:#a7adb8;--line:#2a2e3a;--brand:#ff9f43}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;font-size:15px;line-height:1.7;-webkit-font-smoothing:antialiased}a{color:inherit}.wrap{width:min(1080px,calc(100% - 40px));margin:auto}.topbar{position:sticky;top:0;z-index:20;border-bottom:1px solid var(--line);background:rgba(11,12,16,.92);backdrop-filter:blur(14px)}.nav{min-height:64px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{display:flex;align-items:center;gap:9px;text-decoration:none;font-size:18px;font-weight:800}.brand img{width:34px;height:34px;object-fit:contain;image-rendering:pixelated}.navlinks{display:flex;gap:8px;align-items:center}.navlinks>a:not(.button){padding:7px 9px;text-decoration:none;color:var(--muted);font-size:13px}.navlinks>a:not(.button):hover{color:var(--text)}.button{display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:9999px;padding:.55rem 1.25rem;background:var(--brand);color:#1a0f05;text-decoration:none;font-size:13px;font-weight:600;box-shadow:0 4px 14px -4px rgba(255,159,67,.35);transition:transform .2s ease,box-shadow .2s ease}.button:hover{transform:translateY(-1px);box-shadow:0 8px 18px -6px rgba(255,159,67,.42)}.hero{padding:54px 0 44px}.eyebrow{color:var(--brand);font-size:13px;font-weight:700;letter-spacing:.12em}.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:38px;align-items:center}.hero h1{max-width:640px;margin:12px 0 14px;font-size:clamp(1.8rem,3.2vw,2.38rem);font-weight:800;line-height:1.25;letter-spacing:0}.lead{max-width:650px;margin:0;color:var(--muted);font-size:16px;line-height:1.75}.hero img{width:100%;max-height:350px;object-fit:contain;border:1px solid var(--line);border-radius:16px;background:var(--surface2);box-shadow:0 12px 24px rgba(0,0,0,.16);image-rendering:pixelated}.actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}.ghost{background:transparent;color:var(--text);border:1px solid var(--line);box-shadow:none}section{padding:44px 0}.problem-section{border-block:1px solid var(--line);background:rgba(255,255,255,.012)}.section-kicker{margin:0 0 6px;color:var(--brand);font-size:12px;font-weight:700}.section-title{margin:0 0 10px;font-size:clamp(1.4rem,2.2vw,1.75rem);font-weight:800;line-height:1.35;letter-spacing:0}.section-intro{max-width:740px;margin:0 0 22px;color:var(--muted);font-size:14px}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.card{padding:20px;border:1px solid var(--line);border-radius:16px;background:var(--surface)}.card h2,.card h3{margin:0 0 7px;font-size:17px}.card p{margin:0;color:var(--muted);font-size:14px}.steps{counter-reset:step;display:grid;gap:10px}.step{counter-increment:step;position:relative;padding:17px 18px 17px 60px;border:1px solid var(--line);border-radius:12px;background:var(--surface)}.step:before{content:counter(step);position:absolute;left:16px;top:17px;width:28px;height:28px;border-radius:8px;background:var(--brand);color:#1a0f05;display:grid;place-items:center;font-size:13px;font-weight:800}.step h3{margin:0 0 3px;font-size:16px}.step p{margin:0;color:var(--muted);font-size:14px}.faq{display:grid;gap:9px}.faq details{padding:15px 17px;border:1px solid var(--line);border-radius:12px;background:var(--surface)}.faq summary{cursor:pointer;font-size:14px;font-weight:700}.faq p{margin:8px 0 0;color:var(--muted);font-size:14px}.related{display:flex;flex-wrap:wrap;gap:8px}.related a{padding:7px 11px;border:1px solid var(--line);border-radius:8px;text-decoration:none;color:var(--muted);font-size:13px}.related a:hover{border-color:var(--brand);color:var(--text)}.final-cta{text-align:center;padding:50px 0}.final-cta .section-intro{margin:0 auto 20px}footer{padding:26px 0;border-top:1px solid var(--line);color:var(--muted);font-size:12px}.foot{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px}.foot-home{color:var(--text);text-decoration:none}.beian{display:flex;flex-wrap:wrap;gap:12px}.beian a{text-decoration:none}@media(max-width:900px){.hero-grid{grid-template-columns:1fr}.hero{padding:40px 0 34px}.grid{grid-template-columns:1fr}.navlinks>a:not(.button){display:none}.hero h1{font-size:1.9rem}.hero img{max-height:280px}section{padding:36px 0}.card{padding:18px}}