@import"https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;700;900&family=Inter:wght@400;500;600;700;800;900&display=swap";:root{color-scheme:light;--bg: #ffffff;--bg-grad: radial-gradient(ellipse 80% 50% at 50% -10%, rgba(11, 74, 139, .08), transparent);--surface: #f6f8fb;--surface-strong: #eef3f8;--surface-hover: #f0f5fa;--ink: #142033;--ink-secondary: #2d3e54;--muted: #5c6777;--muted-light: #8b96a5;--line: #dbe3ec;--line-light: #eef2f7;--brand: #0b4a8b;--brand-strong: #07325f;--brand-light: #1a5fae;--brand-soft: #e8f1fb;--brand-grad: linear-gradient(135deg, #07325f 0%, #0b4a8b 50%, #1a5fae 100%);--brand-grad-vibrant: linear-gradient(135deg, #0b4a8b 0%, #16745c 100%);--accent: #16745c;--accent-soft: #e8f5f0;--accent-grad: linear-gradient(135deg, #0d5a47 0%, #16745c 100%);--warning-soft: #fff7e5;--warning-border: #f0dca7;--warning-text: #6f5218;--max: 1200px;--radius: 12px;--radius-sm: 8px;--radius-lg: 20px;--radius-xl: 28px;--shadow-xs: 0 1px 3px rgba(20, 32, 51, .04);--shadow-sm: 0 2px 8px rgba(20, 32, 51, .06), 0 1px 2px rgba(20, 32, 51, .04);--shadow: 0 8px 30px rgba(20, 32, 51, .08), 0 2px 8px rgba(20, 32, 51, .04);--shadow-lg: 0 20px 50px rgba(20, 32, 51, .12), 0 8px 20px rgba(20, 32, 51, .06);--shadow-xl: 0 30px 70px rgba(20, 32, 51, .15), 0 12px 28px rgba(20, 32, 51, .08);--shadow-glow: 0 0 40px rgba(11, 74, 139, .15);--shadow-glow-brand: 0 8px 32px rgba(11, 74, 139, .18), 0 2px 8px rgba(11, 74, 139, .1);--shadow-glow-accent: 0 8px 32px rgba(22, 116, 92, .15), 0 2px 8px rgba(22, 116, 92, .08);--header-bg: rgba(255, 255, 255, .8);--header-border: rgba(219, 227, 236, .6);--footer-bg: #0c1626;--footer-text: #dce5ef;--footer-muted: #8ea0b5;--footer-link: #dcecff;--footer-border: rgba(220, 229, 239, .12);--card-bg: #ffffff;--card-border: #dbe3ec;--card-hover-shadow: 0 16px 40px rgba(20, 32, 51, .12), 0 4px 12px rgba(20, 32, 51, .06);--code-bg: #f1f5f9;--scrollbar-thumb: rgba(11, 74, 139, .3);--transition: .35s cubic-bezier(.4, 0, .2, 1);--transition-fast: .18s cubic-bezier(.4, 0, .2, 1);--transition-bounce: .4s cubic-bezier(.34, 1.56, .64, 1);--grid-pattern: url("data:image/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' stroke='%230b4a8b' stroke-opacity='0.04' stroke-width='1'%3E%3Cpath d='M0 0h40v40H0z'/%3E%3C/g%3E%3C/svg%3E");--dot-pattern: url("data:image/svg+xml,%3Csvg width='20' height='20' viewBox='0 0 20 20' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='1' cy='1' r='1' fill='%230b4a8b' fill-opacity='0.06'/%3E%3C/svg%3E");font-family:Inter,Noto Sans SC,PingFang SC,Microsoft YaHei,system-ui,sans-serif}:root[data-theme=dark]{color-scheme:dark;--bg: #0a0f1a;--bg-grad: radial-gradient(ellipse 80% 50% at 50% -10%, rgba(26, 95, 174, .15), transparent);--surface: #111827;--surface-strong: #1a2332;--surface-hover: #1e293b;--ink: #e8edf5;--ink-secondary: #cbd5e1;--muted: #94a3b8;--muted-light: #64748b;--line: #1e293b;--line-light: #1a2332;--brand: #3b82f6;--brand-strong: #2563eb;--brand-light: #60a5fa;--brand-soft: rgba(59, 130, 246, .12);--brand-grad: linear-gradient(135deg, #1e3a5f 0%, #2563eb 50%, #3b82f6 100%);--brand-grad-vibrant: linear-gradient(135deg, #3b82f6 0%, #2dd4a7 100%);--accent: #2dd4a7;--accent-soft: rgba(45, 212, 167, .12);--accent-grad: linear-gradient(135deg, #0d5a47 0%, #2dd4a7 100%);--warning-soft: rgba(251, 191, 36, .1);--warning-border: rgba(251, 191, 36, .3);--warning-text: #fbbf24;--shadow-xs: 0 1px 3px rgba(0, 0, 0, .2);--shadow-sm: 0 2px 8px rgba(0, 0, 0, .3), 0 1px 2px rgba(0, 0, 0, .2);--shadow: 0 8px 30px rgba(0, 0, 0, .35), 0 2px 8px rgba(0, 0, 0, .2);--shadow-lg: 0 20px 50px rgba(0, 0, 0, .45), 0 8px 20px rgba(0, 0, 0, .3);--shadow-xl: 0 30px 70px rgba(0, 0, 0, .5), 0 12px 28px rgba(0, 0, 0, .3);--shadow-glow: 0 0 40px rgba(59, 130, 246, .2);--shadow-glow-brand: 0 8px 32px rgba(59, 130, 246, .25), 0 2px 8px rgba(59, 130, 246, .15);--shadow-glow-accent: 0 8px 32px rgba(45, 212, 167, .2), 0 2px 8px rgba(45, 212, 167, .1);--header-bg: rgba(10, 15, 26, .8);--header-border: rgba(30, 41, 59, .6);--footer-bg: #060a12;--footer-text: #b8c6d7;--footer-muted: #64748b;--footer-link: #93c5fd;--footer-border: rgba(30, 41, 59, .5);--card-bg: #111827;--card-border: #1e293b;--card-hover-shadow: 0 16px 40px rgba(0, 0, 0, .4), 0 4px 12px rgba(0, 0, 0, .2);--code-bg: #1a2332;--scrollbar-thumb: rgba(59, 130, 246, .4);--grid-pattern: url("data:image/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' stroke='%233b82f6' stroke-opacity='0.05' stroke-width='1'%3E%3Cpath d='M0 0h40v40H0z'/%3E%3C/g%3E%3C/svg%3E");--dot-pattern: url("data:image/svg+xml,%3Csvg width='20' height='20' viewBox='0 0 20 20' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='1' cy='1' r='1' fill='%233b82f6' 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1rem}ul,ol{padding-left:1.25rem}h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-.01em;color:var(--ink);font-weight:800}h1{font-size:clamp(2rem,4.2vw,3.6rem);letter-spacing:-.03em}h2{font-size:clamp(1.5rem,2.5vw,2.2rem);letter-spacing:-.02em}h3{font-size:1.18rem}.gradient-text{background:var(--brand-grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent}.gradient-text-accent{background:var(--accent-grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent}.gradient-text-vibrant{background:var(--brand-grad-vibrant);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent}.scroll-progress{position:fixed;top:0;left:0;width:0%;height:3px;background:var(--brand-grad);z-index:100;transition:width .1s linear;box-shadow:0 0 8px #0b4a8b66}.site-header{position:sticky;top:0;z-index:50;border-bottom:1px solid var(--header-border);background:var(--header-bg);backdrop-filter:blur(20px) saturate(180%);-webkit-backdrop-filter:blur(20px) saturate(180%);transition:all var(--transition)}.site-header.scrolled{box-shadow:var(--shadow-sm)}.header-inner,.container{width:min(100% - 40px,var(--max));margin-inline:auto}.header-inner{min-height:68px;display:flex;align-items:center;justify-content:space-between;gap:24px;transition:min-height var(--transition)}.site-header.scrolled .header-inner{min-height:58px}.brand{display:inline-flex;align-items:center;gap:12px;color:var(--ink);font-weight:800;text-decoration:none;transition:opacity var(--transition-fast)}.brand:hover{opacity:.95;text-decoration:none}.brand-mark{width:40px;height:40px;border-radius:11px;display:grid;place-items:center;color:#fff;background:var(--brand-grad);font-size:15px;font-weight:900;box-shadow:0 4px 14px #0b4a8b4d,inset 0 1px #fff3;transition:transform var(--transition-bounce),box-shadow var(--transition);position:relative;overflow:hidden}.brand-mark:after{content:"";position:absolute;top:-50%;left:-60%;width:40%;height:200%;background:linear-gradient(110deg,transparent,rgba(255,255,255,.3),transparent);transform:rotate(25deg);transition:left .6s ease}.brand:hover .brand-mark{transform:scale(1.08) rotate(-4deg);box-shadow:0 6px 20px #0b4a8b66,inset 0 1px #ffffff40}.brand:hover .brand-mark:after{left:120%}.brand-text{display:grid;line-height:1.25}.brand-text span:first-child{font-size:15px;font-weight:800}.brand-sub{color:var(--muted);font-size:12px;font-weight:500}.site-nav{display:flex;align-items:center;gap:4px;font-size:15px}.site-nav>a{color:var(--ink-secondary);padding:8px 14px;border-radius:var(--radius-sm);transition:all var(--transition-fast);position:relative}.site-nav>a:after{content:"";position:absolute;bottom:4px;left:50%;width:0;height:2px;background:var(--brand-grad);border-radius:2px;transition:width var(--transition),left var(--transition)}.site-nav>a:hover{color:var(--brand);text-decoration:none}.site-nav>a:hover:after{width:60%;left:20%}.nav-cta,.button{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:42px;padding:.5rem 1.3rem;border:none;border-radius:var(--radius-sm);background:var(--brand-grad);color:#fff;font-weight:700;font-size:15px;line-height:1.2;cursor:pointer;transition:transform var(--transition-fast),box-shadow var(--transition),opacity var(--transition-fast);box-shadow:0 4px 14px #0b4a8b40,inset 0 1px #ffffff26;position:relative;overflow:hidden}.button:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);transition:left .5s ease}.button:hover:before{left:100%}.button:hover,.nav-cta:hover{transform:translateY(-2px);box-shadow:0 8px 24px #0b4a8b59,inset 0 1px #fff3;color:#fff;text-decoration:none}.nav-cta{background:var(--accent-grad);box-shadow:0 4px 14px #16745c4d,inset 0 1px #ffffff26}.nav-cta:hover{box-shadow:0 8px 24px #16745c66,inset 0 1px #fff3;color:#fff;text-decoration:none}.button:active{transform:translateY(0)}.button.secondary{background:transparent;color:var(--brand);border:1.5px solid var(--brand);box-shadow:none}.button.secondary:before{display:none}.button.secondary:hover{background:var(--brand-soft);color:var(--brand-strong);border-color:var(--brand-strong);box-shadow:var(--shadow-glow-brand)}.theme-toggle{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface);color:var(--ink);cursor:pointer;transition:all var(--transition-fast);flex-shrink:0;overflow:hidden;position:relative}.theme-toggle:hover{border-color:var(--brand);background:var(--brand-soft);color:var(--brand);transform:rotate(15deg)}.theme-toggle svg{width:20px;height:20px;transition:transform var(--transition)}.theme-toggle .sun-icon{display:none}.theme-toggle .moon-icon{display:block}:root[data-theme=dark] .theme-toggle .sun-icon{display:block}:root[data-theme=dark] .theme-toggle .moon-icon{display:none}.menu-toggle{display:none;align-items:center;justify-content:center;width:40px;height:40px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface);color:var(--ink);cursor:pointer;transition:all var(--transition-fast)}.menu-toggle:hover{border-color:var(--brand);background:var(--brand-soft)}.menu-toggle svg{width:22px;height:22px;transition:transform var(--transition)}.menu-toggle.active svg{transform:rotate(90deg)}.hero{position:relative;overflow:hidden;background:var(--bg-grad);border-bottom:1px solid var(--line)}.hero:before{content:"";position:absolute;top:-30%;right:-10%;width:600px;height:600px;background:radial-gradient(circle,var(--brand-soft) 0%,transparent 70%);opacity:.7;pointer-events:none;animation:float 12s ease-in-out infinite}.hero:after{content:"";position:absolute;bottom:-20%;left:-10%;width:400px;height:400px;background:radial-gradient(circle,var(--accent-soft) 0%,transparent 70%);opacity:.5;pointer-events:none;animation:float 15s ease-in-out infinite reverse}.hero-grid-bg{position:absolute;inset:0;background-image:var(--grid-pattern);background-size:40px 40px;mask-image:radial-gradient(ellipse 80% 60% at 50% 40%,black 30%,transparent 80%);-webkit-mask-image:radial-gradient(ellipse 80% 60% at 50% 40%,black 30%,transparent 80%);pointer-events:none;z-index:0}@keyframes float{0%,to{transform:translate(0) scale(1)}50%{transform:translate(-30px,20px) scale(1.05)}}.hero-inner{width:min(100% - 40px,var(--max));margin-inline:auto;padding:72px 0 52px;display:grid;gap:48px;position:relative;z-index:1}.hero-content{max-width:780px}.eyebrow{display:inline-flex;align-items:center;gap:8px;margin-bottom:16px;color:var(--accent);font-size:14px;font-weight:700;text-transform:uppercase;letter-spacing:.05em;padding:6px 14px;border-radius:999px;background:var(--accent-soft);border:1px solid transparent}.eyebrow:before{content:"";width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 12px var(--accent);animation:pulse 2s ease-in-out infinite}@keyframes pulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.6;transform:scale(1.3)}}.lead{margin-top:18px;max-width:760px;color:var(--muted);font-size:1.1rem;line-height:1.8}.hero-actions,.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}.hero-image{position:relative;overflow:hidden;border-radius:var(--radius-xl);border:1px solid var(--line);box-shadow:var(--shadow-xl),var(--shadow-glow);background:var(--surface);aspect-ratio:16 / 6}.hero-image:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 50%,rgba(11,74,139,.04) 100%);pointer-events:none;border-radius:var(--radius-xl);z-index:1}.hero-image img{width:100%;height:100%;object-fit:cover;transition:transform .8s cubic-bezier(.4,0,.2,1)}.hero-image:hover img{transform:scale(1.03)}.hero-visual{position:relative;margin:0 -20px}.hero-floating-deco{position:absolute;border-radius:50%;pointer-events:none;z-index:0;filter:blur(60px);opacity:.4}.hero-deco-1{width:260px;height:260px;background:var(--brand);top:-60px;right:-40px;opacity:.12;animation:heroFloatUp 8s ease-in-out infinite}.hero-deco-2{width:180px;height:180px;background:var(--accent);bottom:-40px;left:-30px;opacity:.1;animation:heroFloatUp 10s ease-in-out infinite reverse}@keyframes heroFloatUp{0%,to{transform:translateY(0) scale(1)}50%{transform:translateY(-30px) scale(1.15)}}.metric-strip{width:min(100% - 40px,var(--max));margin:-28px auto 0;position:relative;z-index:5;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.metric{min-height:104px;padding:22px 20px;border:1px solid var(--card-border);border-radius:var(--radius);background:var(--card-bg);box-shadow:var(--shadow);transition:transform var(--transition),box-shadow var(--transition),border-color var(--transition);position:relative;overflow:hidden}.metric:before{content:"";position:absolute;top:0;left:0;width:4px;height:100%;background:var(--brand-grad);transform:scaleY(0);transform-origin:top;transition:transform var(--transition)}.metric:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--brand-light)}.metric:hover:before{transform:scaleY(1)}.metric strong{display:block;color:var(--brand);font-size:1.5rem;font-weight:900;line-height:1.2;background:var(--brand-grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.metric span{display:block;margin-top:6px;color:var(--muted);font-size:14px}.section{padding:88px 0;position:relative}.section.alt{background:var(--surface)}.section.alt:before{content:"";position:absolute;top:-1px;left:50%;transform:translate(-50%);width:120px;height:3px;background:var(--brand-grad);border-radius:3px;opacity:.5}.section-head{margin-bottom:40px;display:grid;gap:10px}.section-head p{max-width:760px;color:var(--muted);font-size:1.05rem;line-height:1.8}.grid{display:grid;gap:18px}.grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}.grid.four{grid-template-columns:repeat(4,minmax(0,1fr))}.grid.five{grid-template-columns:repeat(5,minmax(0,1fr))}.card{min-width:0;padding:26px;border:1px solid var(--card-border);border-radius:var(--radius);background:var(--card-bg);transition:transform var(--transition),box-shadow var(--transition),border-color var(--transition);position:relative;overflow:hidden}.card:before{content:"";position:absolute;top:0;left:0;width:100%;height:3px;background:var(--brand-grad);transform:scaleX(0);transform-origin:left;transition:transform var(--transition)}.card:after{content:"";position:absolute;top:-50%;right:-30%;width:150px;height:150px;background:radial-gradient(circle,var(--brand-soft) 0%,transparent 70%);opacity:0;transition:opacity var(--transition);pointer-events:none}.card:hover{transform:translateY(-6px);box-shadow:var(--card-hover-shadow);border-color:var(--brand-light)}.card:hover:before{transform:scaleX(1)}.card:hover:after{opacity:1}.card.highlight{border-color:transparent;background:linear-gradient(180deg,var(--card-bg),var(--surface));box-shadow:var(--shadow-sm)}.card.highlight:before{transform:scaleX(1);height:3px}.card p,.card li{color:var(--muted)}.card h3+p{margin-top:10px}.card-icon,.card-icon-accent{width:48px;height:48px;border-radius:13px;display:grid;place-items:center;margin-bottom:16px;transition:transform var(--transition-bounce),box-shadow var(--transition);position:relative;overflow:hidden}.card-icon{background:var(--brand-grad);color:#fff;box-shadow:0 6px 18px #0b4a8b40,inset 0 1px #fff3}.card-icon-accent{background:var(--accent-grad);color:#fff;box-shadow:0 6px 18px #16745c40,inset 0 1px #fff3}.card-icon:after,.card-icon-accent:after{content:"";position:absolute;top:-50%;left:-60%;width:40%;height:200%;background:linear-gradient(110deg,transparent,rgba(255,255,255,.3),transparent);transform:rotate(25deg);transition:left .6s ease}.card-icon svg,.card-icon-accent svg{width:24px;height:24px;position:relative;z-index:1}.card:hover .card-icon{transform:scale(1.12) rotate(-5deg);box-shadow:0 10px 28px #0b4a8b59,inset 0 1px #ffffff40}.card:hover .card-icon-accent{transform:scale(1.12) rotate(-5deg);box-shadow:0 10px 28px #16745c59,inset 0 1px #ffffff40}.card:hover .card-icon:after,.card:hover .card-icon-accent:after{left:120%}.card-link{display:inline-flex;align-items:center;gap:4px;margin-top:14px;font-weight:700;color:var(--brand);transition:gap var(--transition-fast)}.card-link:after{content:"→";transition:transform var(--transition-fast)}.card:hover .card-link{gap:8px}.card:hover .card-link:after{transform:translate(3px)}.tag-list{display:flex;flex-wrap:wrap;gap:10px;padding:0;margin:0;list-style:none}.tag-list li{padding:.5rem 1rem;border:1px solid var(--line);border-radius:999px;background:var(--card-bg);color:var(--muted);font-size:14px;font-weight:500;transition:all var(--transition-fast);cursor:default}.tag-list li:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft);transform:translateY(-3px);box-shadow:var(--shadow-glow-brand)}.audience-grid{margin-top:8px}.audience-card{display:flex;flex-direction:column;gap:0}.audience-icon{width:48px;height:48px;border-radius:12px;display:grid;place-items:center;background:var(--accent-soft);color:var(--accent);margin-bottom:14px;border:1px solid rgba(22,116,92,.12);transition:all var(--transition-bounce)}.audience-icon svg{width:24px;height:24px}.audience-card:hover .audience-icon{transform:scale(1.1) translateY(-2px);background:var(--accent);color:#fff;border-color:var(--accent);box-shadow:var(--shadow-glow-accent)}.audience-card h3{font-size:18px}.audience-card p{font-size:14px;line-height:1.75;color:var(--muted);margin-top:8px}.process{counter-reset:step}.process .card{position:relative;padding-top:60px}.process .card:after{counter-increment:step;content:counter(step,decimal-leading-zero);position:absolute;top:20px;left:26px;color:var(--brand);font-weight:900;font-size:16px;letter-spacing:.05em;background:var(--brand-soft);width:36px;height:36px;border-radius:10px;display:grid;place-items:center;opacity:1;transition:all var(--transition)}.process .card:hover:after{background:var(--brand-grad);color:#fff;transform:scale(1.1)}.breadcrumb{width:min(100% - 40px,var(--max));margin:0 auto;padding:20px 0 0;color:var(--muted);font-size:14px}.breadcrumb ol{display:flex;flex-wrap:wrap;gap:8px;padding:0;margin:0;list-style:none}.breadcrumb li:not(:last-child):after{content:"/";margin-left:8px;color:var(--muted-light)}.page-hero{padding:56px 0 52px;border-bottom:1px solid var(--line);background:var(--bg-grad);position:relative;overflow:hidden}.page-hero:before{content:"";position:absolute;top:-50%;right:-10%;width:500px;height:500px;background:radial-gradient(circle,var(--brand-soft) 0%,transparent 70%);opacity:.5;pointer-events:none}.page-hero:after{content:"";position:absolute;inset:0;background-image:var(--dot-pattern);background-size:20px 20px;mask-image:radial-gradient(ellipse 70% 60% at 50% 30%,black 20%,transparent 80%);-webkit-mask-image:radial-gradient(ellipse 70% 60% at 50% 30%,black 20%,transparent 80%);pointer-events:none;opacity:.6}.page-hero h1{max-width:16em;position:relative;z-index:1}.page-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:36px;align-items:start}.sidebar{position:sticky;top:90px;display:grid;gap:16px}.toc{padding:22px;border:1px solid var(--card-border);border-radius:var(--radius);background:var(--card-bg)}.toc h2,.toc h3{font-size:1rem;font-weight:700}.toc ul{margin:12px 0 0;padding-left:1rem;display:grid;gap:6px}.toc a{color:var(--muted);font-size:14px;transition:color var(--transition-fast)}.toc a:hover{color:var(--brand)}.content-block{display:grid;gap:28px}.article-body{max-width:790px}.article-body h2{margin-top:40px;font-size:1.55rem}.article-body h3{margin-top:24px}.article-meta{display:flex;flex-wrap:wrap;gap:12px;margin-top:16px;color:var(--muted);font-size:14px;position:relative;z-index:1}.faq-list{display:grid;gap:12px}.faq-item{border:1px solid var(--card-border);border-radius:var(--radius);background:var(--card-bg);overflow:hidden;transition:border-color var(--transition),box-shadow var(--transition)}.faq-item:hover{border-color:var(--brand-light)}.faq-item[open]{border-color:var(--brand);box-shadow:var(--shadow-glow-brand)}.faq-item summary{padding:18px 22px;font-size:1.05rem;font-weight:700;color:var(--ink);cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between;gap:12px;transition:color var(--transition-fast)}.faq-item summary::-webkit-details-marker{display:none}.faq-item summary:after{content:"";width:24px;height:24px;flex-shrink:0;background:var(--brand-soft);border-radius:50%;position:relative;transition:transform 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var(--warning-border);border-radius:var(--radius);background:var(--warning-soft);color:var(--warning-text);position:relative;overflow:hidden}.notice:before{content:"";position:absolute;top:0;left:0;width:4px;height:100%;background:var(--warning-text);opacity:.5}.notice h2{color:var(--warning-text)}.contact-panel{display:grid;gap:14px}.contact-row{display:grid;grid-template-columns:88px minmax(0,1fr);gap:12px;padding-bottom:14px;border-bottom:1px solid var(--line)}.contact-row:last-child{border-bottom:none;padding-bottom:0}.contact-row strong{color:var(--ink)}.wechat-card{text-align:center}.qr-wrap{display:flex;justify-content:center;margin:20px auto 12px;padding:12px;background:var(--surface-2, #f7f9fc);border-radius:14px;border:1px solid var(--line);max-width:240px}.qr-wrap img{width:100%;max-width:200px;height:auto;border-radius:8px}.qr-hint{color:var(--muted);font-size:.875rem;margin:0}.contact-qr-row{display:flex;align-items:center;gap:10px}.contact-qr-row span{flex-shrink:0}.contact-qr-mini{width:72px;height:auto;border-radius:8px;border:1px solid var(--line)}.placeholder-form{display:grid;gap:12px}.placeholder-form label{display:grid;gap:6px;color:var(--muted);font-weight:700;font-size:14px}.placeholder-form input,.placeholder-form textarea,.placeholder-form select{width:100%;border:1px solid var(--line);border-radius:var(--radius-sm);min-height:44px;padding:.7rem .9rem;font:inherit;color:var(--ink);background:var(--card-bg);transition:border-color var(--transition),box-shadow var(--transition)}.placeholder-form input:focus,.placeholder-form textarea:focus,.placeholder-form select:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px var(--brand-soft)}.placeholder-form textarea{min-height:128px;resize:vertical}.cta-band{padding:48px;border-radius:var(--radius-xl);background:var(--brand-grad);color:#fff;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:24px;align-items:center;position:relative;overflow:hidden;box-shadow:var(--shadow-xl)}.cta-band:before{content:"";position:absolute;top:-50%;right:-10%;width:500px;height:500px;background:radial-gradient(circle,rgba(255,255,255,.12) 0%,transparent 70%);pointer-events:none;animation:ctaGlow 8s ease-in-out infinite}.cta-band:after{content:"";position:absolute;inset:0;background-image:var(--grid-pattern);background-size:40px 40px;mask-image:radial-gradient(ellipse 60% 50% at 80% 50%,black 20%,transparent 80%);-webkit-mask-image:radial-gradient(ellipse 60% 50% at 80% 50%,black 20%,transparent 80%);opacity:.5;pointer-events:none}@keyframes ctaGlow{0%,to{transform:translate(0) scale(1);opacity:.6}50%{transform:translate(-20px,20px) scale(1.1);opacity:1}}.cta-band h2{color:#fff;position:relative;z-index:1}.cta-band p{color:#ffffffe0;position:relative;z-index:1}.cta-band .button{background:#fff;border-color:#fff;color:var(--brand-strong);box-shadow:0 4px 14px #00000026;position:relative;z-index:1}.cta-band .button:before{display:none}.cta-band .button:hover{background:#ffffffeb;transform:translateY(-3px);box-shadow:0 8px 24px #0003}.site-footer{border-top:1px solid var(--footer-border);background:var(--footer-bg);color:var(--footer-text);position:relative;overflow:hidden}.site-footer:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--brand-grad)}.footer-inner{width:min(100% - 40px,var(--max));margin-inline:auto;padding:52px 0 28px;display:grid;gap:28px}.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:28px}.site-footer h2{color:#fff;font-size:1.1rem;margin-bottom:10px}.site-footer h3{color:#fff;font-size:.95rem;margin-bottom:12px;position:relative;padding-left:14px}.site-footer h3:before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:4px;height:16px;background:var(--brand-light);border-radius:2px}.site-footer a{color:var(--footer-link);transition:all var(--transition-fast)}.site-footer a:hover{color:#fff;transform:translate(3px)}.site-footer p,.site-footer li{color:var(--footer-muted);font-size:14px}.footer-links{padding:0;margin:0;list-style:none;display:grid;gap:8px}.footer-links a{display:inline-block}.copyright{border-top:1px solid var(--footer-border);padding-top:20px;color:var(--footer-muted);font-size:13px;display:flex;flex-wrap:wrap;gap:8px}.back-to-top{position:fixed;bottom:28px;right:28px;width:48px;height:48px;border:none;border-radius:50%;background:var(--brand-grad);color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-lg);opacity:0;visibility:hidden;transform:translateY(20px) scale(.8);transition:all var(--transition-bounce);z-index:40}.back-to-top.visible{opacity:1;visibility:visible;transform:translateY(0) scale(1)}.back-to-top:hover{transform:translateY(-4px) scale(1.08);box-shadow:0 12px 30px #0b4a8b66,0 0 20px #0b4a8b33}.back-to-top svg{width:22px;height:22px}.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s cubic-bezier(.4,0,.2,1),transform .7s cubic-bezier(.4,0,.2,1)}.reveal.revealed{opacity:1;transform:translateY(0)}.reveal:nth-child(1){transition-delay:0s}.reveal:nth-child(2){transition-delay:.08s}.reveal:nth-child(3){transition-delay:.16s}.reveal:nth-child(4){transition-delay:.24s}.reveal:nth-child(5){transition-delay:.32s}.reveal:nth-child(6){transition-delay:.4s}.mobile-nav{position:fixed;top:0;right:0;width:300px;height:100vh;background:var(--bg);border-left:1px solid var(--line);box-shadow:var(--shadow-xl);z-index:60;padding:80px 24px 24px;display:flex;flex-direction:column;gap:8px;transform:translate(100%);transition:transform var(--transition);overflow-y:auto}.mobile-nav.open{transform:translate(0)}.mobile-nav a{display:block;padding:14px 18px;border-radius:var(--radius-sm);color:var(--ink);font-weight:600;transition:all var(--transition-fast)}.mobile-nav a:hover{background:var(--brand-soft);color:var(--brand);text-decoration:none;transform:translate(4px)}.mobile-nav .nav-cta{margin-top:12px;text-align:center}.mobile-nav-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:#00000080;backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);z-index:55;opacity:0;visibility:hidden;transition:all var(--transition)}.mobile-nav-overlay.open{opacity:1;visibility:visible}@media(max-width:960px){.header-inner{min-height:60px}.site-nav{display:none}.menu-toggle{display:flex}.hero-inner{grid-template-columns:1fr;padding:48px 0 40px}.hero-visual{margin:0}.hero-image{aspect-ratio:16 / 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strong{font-size:1.3rem}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}