*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}:root{--c-void:#0a0a0a;--c-obsidian:#0f0f0f;--c-graphite:#1a1a1a;--c-slate:#2a2a2a;--c-ash:#3d3d3d;--c-fog:#8a8a8a;--c-mist:#b0b0b0;--c-cloud:#d4d4d4;--c-snow:#f0f0f0;--c-white:#ffffff;--c-ember:#c8a44e;--c-ember-dim:#a6863a;--c-ember-glow:#e8c85a;--c-signal:#22c55e;--c-warn:#f59e0b;--c-danger:#ef4444;--ff-display:'Playfair Display',Georgia,'Noto Serif SC',serif;--ff-body:'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;--ff-mono:'JetBrains Mono','Fira Code',monospace;--fs-hero:clamp(2rem,5vw,3.8rem);--fs-h2:clamp(1.5rem,3vw,2.2rem);--fs-h3:clamp(1.1rem,2vw,1.4rem);--fs-body:clamp(0.95rem,1.5vw,1.05rem);--fs-small:0.875rem;--fs-micro:0.75rem;--lh-body:1.8;--w-max:1200px;--w-narrow:960px;--r-section:clamp(3rem,8vw,6rem);--r-gap:clamp(1.5rem,3vw,2.5rem);--ease-smooth:cubic-bezier(0.25,0.46,0.45,0.94);--ease-bounce:cubic-bezier(0.34,1.56,0.64,1)}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;overflow-x:hidden}body{font-family:var(--ff-body);font-size:var(--fs-body);line-height:var(--lh-body);color:var(--c-cloud);background:var(--c-void);overflow-x:hidden;-webkit-font-smoothing:antialiased}img{max-width:100%;height:auto;display:block}a{color:inherit;text-decoration:none}ul,ol{list-style:none}h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.3}.section{padding:80px 5%}.wrap{max-width:var(--w-max);margin:0 auto;padding:0 clamp(1.2rem,3vw,2rem)}.wrap--narrow{max-width:var(--w-narrow)}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);border:0}body::after{content:'';position:fixed;inset:0;z-index:9999;pointer-events:none;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");background-repeat:repeat;opacity:0.5}.hd{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(10,10,10,0.85);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid rgba(200,164,78,0.08);transition:background 0.4s var(--ease-smooth)}.hd-inner{display:flex;align-items:center;justify-content:space-between;max-width:var(--w-max);margin:0 auto;padding:0 clamp(1.2rem,3vw,2rem);height:64px}.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}.brand img{height:28px;width:auto}.brand-text{font-family:var(--ff-display);font-size:1.1rem;color:var(--c-ember);letter-spacing:0.05em;font-weight:600}.hd nav ul{display:flex;gap:clamp(1rem,2.5vw,2rem);align-items:center}.hd nav a{font-size:var(--fs-small);color:var(--c-fog);transition:color 0.3s;position:relative;padding:4px 0}.hd nav a::after{content:'';position:absolute;bottom:-2px;left:0;width:0;height:1px;background:var(--c-ember);transition:width 0.3s var(--ease-smooth)}.hd nav a:hover{color:var(--c-ember)}.hd nav a:hover::after{width:100%}.hd-cta{display:inline-flex;align-items:center;gap:6px;padding:8px 20px;background:var(--c-ember);color:var(--c-void);font-size:var(--fs-small);font-weight:600;border-radius:4px;transition:all 0.3s}.hd-cta:hover{background:var(--c-ember-glow);transform:translateY(-1px)}.nav-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;background:none;border:none;padding:8px}.nav-toggle span{display:block;width:22px;height:2px;background:var(--c-cloud);transition:all 0.3s}.nav-panel{display:flex;align-items:center;gap:clamp(1.5rem,3vw,2.5rem)}@media(max-width:900px){.nav-toggle{display:flex}.nav-panel{position:fixed;top:64px;left:0;right:0;bottom:0;flex-direction:column;align-items:stretch;gap:0;background:rgba(10,10,10,0.98);backdrop-filter:blur(30px);padding:2rem 1.5rem;visibility:hidden;opacity:0;pointer-events:none;transform:none;transition:opacity 0.3s var(--ease-smooth);overflow-y:auto}.nav-panel.open{visibility:visible;opacity:1;pointer-events:auto}.nav-panel nav ul{flex-direction:column;gap:0}.nav-panel nav li{border-bottom:1px solid rgba(255,255,255,0.05)}.nav-panel nav a{display:block;padding:1rem 0;font-size:1rem;color:var(--c-mist)}.hd-cta{margin-top:1.5rem;justify-content:center;padding:14px 20px}}.hero{position:relative;min-height:100vh;display:flex;align-items:center;overflow:hidden;padding-top:64px}.hero-bg{position:absolute;inset:0;background-image:url('https://newder.bj.bcebos.com/site-images/21-9/8.webp');background-size:cover;background-position:center}.hero-bg::after{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(10,10,10,0.88) 0%,rgba(10,10,10,0.65) 50%,rgba(10,10,10,0.8) 100%)}.hero-inner{position:relative;z-index:2;max-width:var(--w-max);margin:0 auto;padding:clamp(3rem,8vw,6rem) clamp(1.2rem,3vw,2rem);width:100%}.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 16px;border:1px solid rgba(200,164,78,0.3);border-radius:100px;font-size:var(--fs-micro);color:var(--c-ember);letter-spacing:0.1em;text-transform:uppercase;margin-bottom:2rem;animation:fadeUp 0.8s var(--ease-smooth) both}.hero-badge::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--c-signal);flex-shrink:0}.hero h1{font-family:var(--ff-display);font-size:var(--fs-hero);color:var(--c-white);line-height:1.15;margin-bottom:1.5rem;max-width:780px;animation:fadeUp 0.8s 0.15s var(--ease-smooth) both}.hero h1 strong{color:var(--c-ember);font-weight:inherit}.hero-sub{font-size:clamp(1rem,1.8vw,1.2rem);color:var(--c-mist);max-width:620px;line-height:1.8;margin-bottom:2.5rem;animation:fadeUp 0.8s 0.3s var(--ease-smooth) both}.hero-actions{display:flex;flex-wrap:wrap;gap:1rem;align-items:center;margin-bottom:3rem;animation:fadeUp 0.8s 0.45s var(--ease-smooth) both}.btn-primary{display:inline-flex;align-items:center;gap:8px;padding:14px 32px;background:var(--c-ember);color:var(--c-void);font-weight:700;font-size:1rem;border-radius:4px;transition:all 0.3s;border:2px solid var(--c-ember)}.btn-primary:hover{background:transparent;color:var(--c-ember);transform:translateY(-2px)}.btn-ghost{display:inline-flex;align-items:center;gap:8px;padding:14px 32px;background:transparent;color:var(--c-cloud);font-weight:600;font-size:1rem;border-radius:4px;border:1px solid var(--c-ash);transition:all 0.3s}.btn-ghost:hover{border-color:var(--c-ember);color:var(--c-ember);transform:translateY(-2px)}.hero-anchors{display:flex;flex-wrap:wrap;gap:0.6rem;animation:fadeUp 0.8s 0.6s var(--ease-smooth) both}.hero-anchors a{font-size:var(--fs-micro);color:var(--c-fog);padding:4px 12px;border:1px solid var(--c-slate);border-radius:100px;transition:all 0.25s}.hero-anchors a:hover{border-color:var(--c-ember);color:var(--c-ember)}.hero-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:1.5rem;max-width:500px;margin-top:3rem;padding-top:2rem;border-top:1px solid rgba(200,164,78,0.15);animation:fadeUp 0.8s 0.75s var(--ease-smooth) both}.hero-stat-num{font-family:var(--ff-display);font-size:1.6rem;color:var(--c-ember);font-weight:700}.hero-stat-label{font-size:var(--fs-micro);color:var(--c-fog);margin-top:4px}@keyframes fadeUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}.sc{padding:var(--r-section) 0;position:relative}.sc:nth-child(even){background:var(--c-obsidian)}.sc-label{font-size:var(--fs-micro);color:var(--c-ember);letter-spacing:0.15em;text-transform:uppercase;font-weight:600;margin-bottom:0.8rem;display:flex;align-items:center;gap:8px}.sc-label::before{content:'';width:24px;height:1px;background:var(--c-ember)}.sc h2{font-family:var(--ff-display);font-size:var(--fs-h2);color:var(--c-white);margin-bottom:1rem;line-height:1.3}.sc-desc{color:var(--c-mist);max-width:640px;margin-bottom:var(--r-gap)}.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(2rem,4vw,4rem);align-items:start}.about-content p{margin-bottom:1.2rem;color:var(--c-cloud)}.about-content p strong{color:var(--c-ember)}.about-visual{position:relative;border-radius:8px;overflow:hidden;border:1px solid var(--c-slate)}.about-visual img{width:100%;aspect-ratio:4/3;object-fit:cover}.about-tags{display:flex;flex-wrap:wrap;gap:0.5rem;margin-top:1.5rem}.about-tags span{font-size:var(--fs-micro);padding:5px 14px;border:1px solid var(--c-ash);border-radius:100px;color:var(--c-fog)}@media(max-width:768px){.about-grid{grid-template-columns:1fr}.about-visual{order:-1}}.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem}.svc-card{background:var(--c-graphite);border:1px solid var(--c-slate);border-radius:8px;padding:clamp(1.5rem,2.5vw,2rem);transition:all 0.4s var(--ease-smooth);position:relative;overflow:hidden}.svc-card::before{content:'';position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,transparent,var(--c-ember),transparent);opacity:0;transition:opacity 0.4s}.svc-card:hover{border-color:var(--c-ember-dim);transform:translateY(-4px)}.svc-card:hover::before{opacity:1}.svc-icon{width:48px;height:48px;display:flex;align-items:center;justify-content:center;background:rgba(200,164,78,0.08);border-radius:8px;margin-bottom:1.2rem;font-size:1.4rem;color:var(--c-ember)}.svc-card h3{font-size:var(--fs-h3);color:var(--c-white);margin-bottom:0.8rem}.svc-card p{color:var(--c-mist);font-size:var(--fs-small);line-height:1.7}.svc-img{margin-top:1rem;border-radius:6px;overflow:hidden;aspect-ratio:3/2}.svc-img img{width:100%;height:100%;object-fit:cover}@media(max-width:900px){.svc-grid{grid-template-columns:1fr 1fr}}@media(max-width:560px){.svc-grid{grid-template-columns:1fr}}.compare-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}.compare-table{width:100%;border-collapse:collapse;min-width:600px}.compare-table th,.compare-table td{padding:1rem 1.2rem;text-align:left;font-size:var(--fs-small);border-bottom:1px solid var(--c-slate)}.compare-table thead th{background:var(--c-graphite);color:var(--c-ember);font-weight:600;position:sticky;top:0}.compare-table tbody tr{transition:background 0.2s}.compare-table tbody tr:hover{background:rgba(200,164,78,0.04)}.compare-table td:first-child{color:var(--c-white);font-weight:600}.compare-table .check{color:var(--c-signal)}.compare-table .dash{color:var(--c-ash)}.compare-note{font-size:var(--fs-micro);color:var(--c-fog);margin-top:1rem;font-style:italic}.guide-steps{display:grid;gap:2rem;counter-reset:guide-step}.guide-step{counter-increment:guide-step;display:grid;grid-template-columns:60px 1fr;gap:1.5rem;align-items:start}.guide-step-num{width:52px;height:52px;display:flex;align-items:center;justify-content:center;border:2px solid var(--c-ember);border-radius:50%;font-family:var(--ff-display);font-size:1.2rem;color:var(--c-ember);font-weight:700;flex-shrink:0}.guide-step-num::after{content:counter(guide-step)}.guide-step h3{font-size:var(--fs-h3);color:var(--c-white);margin-bottom:0.6rem}.guide-step p{color:var(--c-mist);font-size:var(--fs-small)}@media(max-width:560px){.guide-step{grid-template-columns:1fr;text-align:center}.guide-step-num{margin:0 auto}}.scenes-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1.5rem}.scene-card{padding:clamp(1.5rem,2vw,2rem);background:var(--c-graphite);border:1px solid var(--c-slate);border-radius:8px;transition:border-color 0.3s}.scene-card:hover{border-color:var(--c-ember-dim)}.scene-card h3{font-size:var(--fs-h3);color:var(--c-white);margin-bottom:0.6rem}.scene-card p{color:var(--c-mist);font-size:var(--fs-small)}.scene-tag{display:inline-block;font-size:var(--fs-micro);color:var(--c-ember);border:1px solid rgba(200,164,78,0.3);padding:2px 10px;border-radius:100px;margin-bottom:0.8rem}@media(max-width:600px){.scenes-grid{grid-template-columns:1fr}}.aud-cols{display:grid;grid-template-columns:1fr 1fr;gap:2rem}.aud-box{padding:2rem;border-radius:8px;background:var(--c-graphite);border:1px solid var(--c-slate)}.aud-box h3{font-size:var(--fs-h3);color:var(--c-white);margin-bottom:1rem}.aud-box.yes{border-left:3px solid var(--c-signal)}.aud-box.no{border-left:3px solid var(--c-danger)}.aud-box li{padding:0.5rem 0;color:var(--c-mist);font-size:var(--fs-small);padding-left:1.2rem;position:relative}.aud-box.yes li::before{content:'✓';position:absolute;left:0;color:var(--c-signal);font-weight:700}.aud-box.no li::before{content:'✗';position:absolute;left:0;color:var(--c-danger);font-weight:700}@media(max-width:600px){.aud-cols{grid-template-columns:1fr}}.proc-timeline{position:relative;padding-left:2rem}.proc-timeline::before{content:'';position:absolute;top:0;bottom:0;left:8px;width:1px;background:linear-gradient(to bottom,var(--c-ember),var(--c-ash))}.proc-item{position:relative;padding-bottom:2.5rem}.proc-item::before{content:'';position:absolute;left:-2rem;top:6px;width:17px;height:17px;border-radius:50%;border:2px solid var(--c-ember);background:var(--c-void);transform:translateX(0.5px)}.proc-item h3{font-size:var(--fs-h3);color:var(--c-white);margin-bottom:0.5rem}.proc-item p{color:var(--c-mist);font-size:var(--fs-small)}.safety-list{display:grid;gap:1.2rem}.safety-item{display:flex;gap:1rem;align-items:flex-start;padding:1.5rem;background:var(--c-graphite);border-radius:8px;border:1px solid var(--c-slate)}.safety-icon{width:40px;height:40px;display:flex;align-items:center;justify-content:center;background:rgba(239,68,68,0.08);border-radius:8px;font-size:1.1rem;color:var(--c-warn);flex-shrink:0}.safety-item h3{font-size:var(--fs-h3);color:var(--c-white);margin-bottom:0.4rem}.safety-item p{color:var(--c-mist);font-size:var(--fs-small)}.glossary-list{display:grid;gap:1.5rem}.glossary-item{padding-bottom:1.5rem;border-bottom:1px solid var(--c-slate)}.glossary-term{font-size:var(--fs-h3);color:var(--c-ember);font-weight:700;margin-bottom:0.4rem;font-family:var(--ff-display)}.glossary-def{color:var(--c-cloud);font-size:var(--fs-small)}.faq dl{border-top:1px solid var(--c-slate)}.faq dt{padding:1.2rem 0;color:var(--c-white);font-weight:600;font-size:1rem;border-bottom:1px solid rgba(255,255,255,0.03);cursor:default;display:flex;align-items:flex-start;gap:0.8rem}.faq dt::before{content:'Q';display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;background:var(--c-ember);color:var(--c-void);border-radius:4px;font-size:var(--fs-small);font-weight:700;flex-shrink:0}.faq dd{padding:0 0 1.5rem 2.8rem;color:var(--c-mist);font-size:var(--fs-small);line-height:1.8;border-bottom:1px solid var(--c-slate)}.trust-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1.5rem}.trust-item{padding:1.5rem;background:var(--c-graphite);border-radius:8px;border:1px solid var(--c-slate)}.trust-item h3{font-size:var(--fs-small);color:var(--c-ember);font-weight:600;margin-bottom:0.5rem;text-transform:uppercase;letter-spacing:0.05em}.trust-item p{color:var(--c-cloud);font-size:var(--fs-small)}.updates-list{display:grid;gap:1rem}.update-item{display:flex;gap:1rem;align-items:flex-start}.update-date{font-size:var(--fs-micro);color:var(--c-ember);white-space:nowrap;min-width:90px;padding-top:2px}.update-text{color:var(--c-mist);font-size:var(--fs-small)}.cta{position:relative;overflow:hidden;text-align:center;background:var(--c-graphite)}.cta-bg{position:absolute;inset:0;background-image:url('https://newder.bj.bcebos.com/site-images/21-9/2.webp');background-size:cover;background-position:center}.cta-bg::after{content:'';position:absolute;inset:0;background:rgba(10,10,10,0.82)}.cta-inner{position:relative;z-index:2}.cta-title{font-family:var(--ff-display);font-size:var(--fs-h2);color:var(--c-white);margin-bottom:1rem}.cta-sub{color:var(--c-mist);max-width:520px;margin:0 auto 2rem}.cta-actions{display:flex;flex-wrap:wrap;gap:1rem;justify-content:center;margin-bottom:1.5rem}.cta-qr{display:inline-flex;flex-direction:column;align-items:center;gap:0.8rem;margin-top:1.5rem}.cta-qr img{width:140px;height:140px;border-radius:8px;border:2px solid var(--c-ember)}.cta-qr span{font-size:var(--fs-micro);color:var(--c-fog)}.qr-mark{width:140px;min-height:140px;border-radius:8px;border:2px solid var(--c-ember);display:flex;align-items:center;justify-content:center;color:var(--c-ember);background:rgba(10,10,10,.32);font-size:var(--fs-small);line-height:1.7;letter-spacing:.05em;text-align:center}.cta-notice{font-size:var(--fs-micro);color:var(--c-fog);margin-top:1.5rem;padding-top:1rem;border-top:1px solid rgba(255,255,255,0.06);max-width:460px;margin-left:auto;margin-right:auto}.ft{background:var(--c-void);padding:3rem 0 1.5rem;border-top:1px solid var(--c-slate)}.ft-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:2rem;margin-bottom:2rem}.ft-brand{display:flex;align-items:center;gap:10px;margin-bottom:1rem}.ft-brand img{height:24px;width:auto}.ft-brand span{font-family:var(--ff-display);font-size:1rem;color:var(--c-ember);font-weight:600}.ft-desc{font-size:var(--fs-small);color:var(--c-fog);line-height:1.7;max-width:340px}.ft h4{font-size:var(--fs-small);color:var(--c-white);margin-bottom:1rem;font-weight:600}.ft-links a{display:block;font-size:var(--fs-small);color:var(--c-fog);padding:0.3rem 0;transition:color 0.2s}.ft-links a:hover{color:var(--c-ember)}.ft-qr{display:flex;flex-direction:column;align-items:flex-start;gap:0.6rem}.ft-qr img{width:100px;height:100px;border-radius:6px}.ft-qr span{font-size:var(--fs-micro);color:var(--c-fog)}.ft-qr .qr-mark{width:100px;min-height:100px;border-width:1px;font-size:var(--fs-micro)}.ft-link-note{display:block;font-size:var(--fs-small);color:var(--c-fog);padding:.3rem 0}.ft-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;padding-top:1.5rem;border-top:1px solid var(--c-slate);gap:1rem}.ft-copy{font-size:var(--fs-micro);color:var(--c-ash)}.ft-policy{display:flex;gap:1.5rem}.ft-policy a{font-size:var(--fs-micro);color:var(--c-fog);transition:color 0.2s}.ft-policy a:hover{color:var(--c-ember)}@media(max-width:768px){.ft-grid{grid-template-columns:1fr 1fr;gap:1.5rem}}@media(max-width:480px){.ft-grid{grid-template-columns:1fr}}.product-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;margin-top:2rem}.product-card{text-align:center}.product-card img{aspect-ratio:4/5;object-fit:cover;border-radius:8px;border:1px solid var(--c-slate);width:100%}.product-card p{font-size:var(--fs-micro);color:var(--c-fog);margin-top:.5rem}@media(max-width:700px){.product-strip{grid-template-columns:repeat(2,1fr)}}.mobile-bar{display:none;position:fixed;bottom:0;left:0;right:0;z-index:99;background:rgba(10,10,10,0.95);backdrop-filter:blur(16px);border-top:1px solid rgba(200,164,78,0.15);padding:10px 16px}.mobile-bar-inner{display:flex;align-items:center;justify-content:space-between;gap:12px}.mobile-bar-text{font-size:var(--fs-micro);color:var(--c-mist);flex:1}.mobile-bar-btn{padding:10px 24px;background:var(--c-ember);color:var(--c-void);font-weight:700;font-size:var(--fs-small);border-radius:4px;white-space:nowrap}@media(max-width:768px){.mobile-bar{display:block}body{padding-bottom:60px}}.backtop{position:fixed;bottom:80px;right:20px;z-index:98;width:44px;height:44px;border-radius:50%;background:var(--c-graphite);border:1px solid var(--c-ash);display:flex;align-items:center;justify-content:center;cursor:pointer;opacity:0;visibility:hidden;transition:all 0.3s var(--ease-smooth);color:var(--c-ember);font-size:1.2rem}.backtop.visible{opacity:1;visibility:visible}.backtop:hover{background:var(--c-ember);color:var(--c-void);transform:translateY(-2px)}@media(min-width:769px){.backtop{bottom:30px;right:30px}}.reveal{opacity:0;transform:translateY(30px);transition:all 0.7s var(--ease-smooth)}.reveal.visible{opacity:1;transform:translateY(0)}