/* ========================================
   上海网塑 — 浅色科技风
   参考: Atlassian / Notion / Linear
   ======================================== */

/* === Reset & Tokens === */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#FFFFFF;--bg-alt:#F8FAFC;--bg-card:#FFFFFF;--bg-elevated:#F1F5F9;
  --border:#E2E8F0;--border-hover:#CBD5E1;
  --text-primary:#0F172A;--text-secondary:#475569;--text-muted:#94A3B8;
  --accent:#2563EB;--accent-light:#3B82F6;--accent-dark:#1D4ED8;--accent-glow:rgba(37,99,235,.15);
  --cyan:#0891B2;--purple:#7C3AED;--green:#059669;
  --gradient:linear-gradient(135deg,var(--accent),var(--purple));
  --radius:16px;--radius-sm:10px;--radius-xs:6px;
}
html{scroll-behavior:smooth;font-size:16px}
.scroll-progress{position:fixed;top:0;left:0;height:3px;width:100%;transform:scaleX(0);transform-origin:left center;background:linear-gradient(90deg,var(--accent),var(--purple));z-index:1100;will-change:transform}
body{font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--text-primary);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
ul,ol{list-style:none}
h1,h2,h3,h4,h5,h6{font-weight:600;line-height:1.15;letter-spacing:-.02em}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-alt{background:var(--bg-alt)}

/* === Typography === */
.heading-xl{font-size:clamp(40px,5.5vw,64px);font-weight:700;letter-spacing:-.03em;line-height:1.08}
.heading-lg{font-size:clamp(28px,3.5vw,44px);font-weight:700;letter-spacing:-.025em}
.heading-md{font-size:clamp(20px,2.5vw,30px);font-weight:600}
.text-lg{font-size:18px;color:var(--text-secondary);line-height:1.7}
.text-md{font-size:16px;color:var(--text-secondary);line-height:1.7}
.gradient-text{background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}

/* === Buttons === */
.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 28px;border-radius:var(--radius-sm);font-size:15px;font-weight:500;cursor:pointer;border:none;transition:all .25s;gap:8px;position:relative;overflow:hidden;font-family:inherit}
.btn-primary{background:var(--accent);color:#fff;font-weight:600}
.btn-primary::after{content:'';position:absolute;inset:0;background:linear-gradient(105deg,transparent 35%,rgba(255,255,255,.12) 45%,rgba(255,255,255,.25) 50%,rgba(255,255,255,.12) 55%,transparent 65%);background-size:200% 100%;transform:translateX(100%);transition:transform .6s cubic-bezier(.4,0,.2,1);border-radius:inherit}
.btn-primary:hover{background:var(--accent-dark);transform:translateY(-1px);box-shadow:0 4px 16px var(--accent-glow)}
.btn-primary:hover::after{transform:translateX(-100%)}
.btn-outline{background:transparent;color:var(--accent);border:1.5px solid var(--border)}
.btn-outline:hover{border-color:var(--accent);background:rgba(37,99,235,.04)}
.btn-ghost{background:rgba(255,255,255,.1);color:#fff;border:1px solid rgba(255,255,255,.2)}
.btn-ghost:hover{background:rgba(255,255,255,.18);border-color:rgba(255,255,255,.3)}
.btn-accent{background:var(--gradient);color:#fff;font-weight:600}
.btn-accent::after{content:'';position:absolute;inset:0;background:linear-gradient(105deg,transparent 35%,rgba(255,255,255,.12) 45%,rgba(255,255,255,.25) 50%,rgba(255,255,255,.12) 55%,transparent 65%);background-size:200% 100%;transform:translateX(100%);transition:transform .6s cubic-bezier(.4,0,.2,1);border-radius:inherit}
.btn-accent:hover{transform:translateY(-1px);box-shadow:0 4px 20px var(--accent-glow)}
.btn-accent:hover::after{transform:translateX(-100%)}
.btn-lg{padding:14px 36px;font-size:16px;border-radius:var(--radius-sm)}
.btn-sm{padding:8px 18px;font-size:13px;border-radius:var(--radius-xs)}

/* === Navigation === */
.navbar{position:fixed;top:0;left:0;right:0;z-index:1000;height:64px;background:rgba(255,255,255,.72);backdrop-filter:blur(16px) saturate(180%);-webkit-backdrop-filter:blur(16px) saturate(180%);transition:all .3s;border-bottom:1px solid transparent}
.navbar.scrolled{box-shadow:0 1px 12px rgba(0,0,0,.06);border-bottom-color:var(--border)}
.navbar .container{display:flex;align-items:center;justify-content:space-between;height:100%}
.nav-logo{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:var(--text-primary)}
.nav-logo-img{height:32px;width:auto;flex-shrink:0;display:block}
.nav-logo-icon{width:32px;height:32px;background:var(--gradient);border-radius:8px;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:16px}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{padding:8px 14px;font-size:14px;color:var(--text-secondary);border-radius:var(--radius-xs);transition:all .2s;font-weight:450}
.nav-links a:hover{color:var(--text-primary);background:var(--bg-alt)}
.nav-links a.active{color:var(--accent);font-weight:500}
.nav-right{display:flex;align-items:center;gap:12px}
.nav-phone{font-size:14px;color:var(--text-muted);display:flex;align-items:center;gap:6px}
.nav-phone:hover{color:var(--text-primary)}
.nav-cta{padding:8px 20px;background:var(--accent);color:#fff;border-radius:var(--radius-xs);font-size:14px;font-weight:600;transition:all .2s}
.nav-cta:hover{background:var(--accent-dark);box-shadow:0 2px 12px var(--accent-glow)}
.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:4px}
.hamburger span{width:20px;height:1.5px;background:var(--text-primary);border-radius:2px;transition:all .3s}

/* === Hero — Dark Section === */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;padding-top:64px;overflow:hidden;background:linear-gradient(180deg,#0F172A 0%,#1E293B 100%)}
.hero::before{content:'';position:absolute;top:-30%;left:50%;width:700px;height:700px;background:radial-gradient(circle,var(--accent),transparent 70%);transform:translateX(-50%);opacity:.12;pointer-events:none}
.hero::after{content:'';position:absolute;bottom:-20%;right:-5%;width:500px;height:500px;background:radial-gradient(circle,var(--purple),transparent 70%);opacity:.08;pointer-events:none}
.hero-grid{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:64px 64px;mask-image:radial-gradient(ellipse 70% 60% at 50% 40%,black 20%,transparent 100%);-webkit-mask-image:radial-gradient(ellipse 70% 60% at 50% 40%,black 20%,transparent 100%)}
.hero-content{position:relative;z-index:2;text-align:center;max-width:880px;margin:0 auto}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 16px;border-radius:100px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);font-size:13px;color:rgba(255,255,255,.7);margin-bottom:28px;backdrop-filter:blur(8px)}
.hero-badge-dot{width:6px;height:6px;border-radius:50%;background:var(--green);animation:dotPulse 2s infinite}
@keyframes dotPulse{0%,100%{opacity:1}50%{opacity:.4}}
.hero h1{color:#fff;margin-bottom:20px}
.hero-subtitle{font-size:18px;color:rgba(255,255,255,.65);max-width:600px;margin:0 auto 36px;line-height:1.7}
.hero-btns{display:flex;gap:12px;justify-content:center;margin-bottom:44px;flex-wrap:wrap}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-bottom:48px}
.hero-tag{padding:6px 16px;border-radius:100px;font-size:13px;color:rgba(255,255,255,.6);background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08);transition:all .3s}
.hero-tag:hover{border-color:rgba(59,130,246,.4);color:#fff;background:rgba(59,130,246,.1)}
.hero-stats{display:flex;gap:60px;justify-content:center;padding-top:48px;border-top:1px solid rgba(255,255,255,.1)}
.hero-stat-num{font-size:36px;font-weight:700;font-variant-numeric:tabular-nums;color:#fff;transition:transform .35s cubic-bezier(.34,1.56,.64,1),box-shadow .35s ease}
.hero-stat-label{font-size:13px;color:rgba(255,255,255,.45);margin-top:4px}
.hero-showcase{margin-top:48px;max-width:920px;margin-left:auto;margin-right:auto}
.hero-showcase-frame{position:relative;border-radius:14px;overflow:hidden;border:1px solid rgba(255,255,255,.14);box-shadow:0 40px 90px -20px rgba(0,0,0,.65);transition:transform .5s cubic-bezier(.22,1,.36,1)}
.hero-showcase-frame:hover{transform:translateY(-4px)}
.hero-showcase-frame img{display:block;width:100%;height:auto;aspect-ratio:3/2}
@media(max-width:640px){.hero-showcase{margin-top:36px}}

/* === Section Headers === */
.section-header{text-align:center;margin-bottom:60px}
.section-eyebrow{display:inline-block;font-size:13px;font-weight:600;text-transform:uppercase;letter-spacing:.1em;color:var(--accent);margin-bottom:14px;padding:4px 14px;border-radius:100px;background:var(--accent-glow);border:1px solid rgba(37,99,235,.12)}
.section-header p{font-size:17px;color:var(--text-secondary);max-width:560px;margin:16px auto 0}

/* === Bento Grid (Services) === */
.bento-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.bento-card{background:var(--bg-card);border:1px solid rgba(226,232,240,.6);border-radius:var(--radius);padding:28px;position:relative;overflow:hidden;transition:all .35s;cursor:pointer;backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px)}
.bento-card:hover{border-color:var(--border-hover);box-shadow:0 8px 30px rgba(0,0,0,.06);transform:translateY(-3px)}
.bento-card.featured{grid-column:span 2}
.bento-icon{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:16px;background:var(--accent-glow);border:1px solid rgba(37,99,235,.14);color:var(--accent);transition:all .35s}
.bento-svg{width:22px;height:22px;display:block}
.bento-card:hover .bento-icon{background:var(--gradient);border-color:transparent;color:#fff;transform:translateY(-2px)}
.bento-card h3{font-size:17px;margin-bottom:8px;font-weight:600;color:var(--text-primary)}
.bento-card p{font-size:14px;color:var(--text-muted);line-height:1.6}
.bento-card .card-arrow{position:absolute;bottom:20px;right:20px;width:28px;height:28px;border-radius:50%;background:var(--bg-alt);display:flex;align-items:center;justify-content:center;font-size:14px;color:var(--text-muted);transition:all .3s}
.bento-card:hover .card-arrow{background:var(--accent);color:#fff}
.bento-tags{display:flex;flex-wrap:wrap;gap:4px;margin-top:12px}
.bento-tags span{padding:2px 8px;border-radius:4px;font-size:11px;color:var(--text-muted);background:var(--bg-alt)}

/* === Advantages (Horizontal Scroll) === */
.adv-track{display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:16px;-ms-overflow-style:none;scrollbar-width:none;-webkit-mask-image:linear-gradient(90deg,transparent 0%,black 6%,black 94%,transparent 100%);mask-image:linear-gradient(90deg,transparent 0%,black 6%,black 94%,transparent 100%);position:relative}
.adv-track::-webkit-scrollbar{display:none}
.adv-card{flex:0 0 280px;scroll-snap-align:start;background:rgba(255,255,255,.45);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);border:1px solid rgba(226,232,240,.5);border-radius:var(--radius);padding:28px;transition:all .3s}
.adv-card:hover{border-color:var(--border-hover);box-shadow:0 4px 20px rgba(0,0,0,.04);transform:translateY(-2px)}
.adv-card-icon{width:40px;height:40px;border-radius:10px;background:var(--gradient);display:flex;align-items:center;justify-content:center;font-size:20px;color:#fff;margin-bottom:16px;transition:transform .3s}
.adv-svg{width:20px;height:20px;display:block}
.adv-card:hover .adv-card-icon{transform:scale(1.08)}
.adv-card h3{font-size:16px;margin-bottom:8px;color:var(--text-primary)}
.adv-card p{font-size:14px;color:var(--text-muted);line-height:1.6}

/* === Cases === */
.cases-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.case-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:border-color .35s,box-shadow .35s,transform .35s;display:block;--rx:0;--ry:0}
.case-card::before{content:'';position:absolute;inset:0;z-index:2;pointer-events:none;background:linear-gradient(105deg,transparent 35%,rgba(37,99,235,.06) 45%,rgba(124,58,237,.12) 50%,rgba(37,99,235,.06) 55%,transparent 65%);background-size:200% 100%;opacity:0;transition:opacity .35s;border-radius:var(--radius)}
.case-card:hover::before{opacity:1;animation:caseShimmer .85s cubic-bezier(.4,0,.2,1) forwards}
@keyframes caseShimmer{0%{background-position:100% 0}100%{background-position:-100% 0}}
.case-card:hover{border-color:var(--border-hover);box-shadow:0 8px 30px rgba(0,0,0,.06);transform:perspective(900px) rotateX(calc(var(--rx)*1deg)) rotateY(calc(var(--ry)*1deg)) translateY(-3px)}
.case-visual{height:180px;position:relative;overflow:hidden}
.case-visual-inner{width:100%;height:100%;display:flex;align-items:center;justify-content:center;font-size:48px;transition:transform .5s cubic-bezier(.22,1,.36,1);transform:translateZ(0)}
.case-shot{width:90%;max-width:340px;height:auto;aspect-ratio:400/220;border-radius:8px;background:#fff;box-shadow:0 10px 30px rgba(0,0,0,.22);border:1px solid rgba(0,0,0,.05)}
.case-card:hover .case-visual-inner{transform:translateZ(10px) scale(1.04)}
.case-body{padding:20px}
.case-tag{display:inline-block;padding:3px 10px;border-radius:4px;font-size:12px;color:var(--accent);background:var(--accent-glow);margin-bottom:10px}
.case-body h3{font-size:16px;margin-bottom:6px;color:var(--text-primary)}
.case-body p{font-size:13px;color:var(--text-muted);line-height:1.5}
.industry-chip{display:inline-flex;align-items:center;gap:8px;padding:12px 22px;background:var(--bg-card);border:1px solid var(--border);border-radius:100px;font-size:15px;font-weight:500;color:var(--text-secondary);transition:all .25s;cursor:default}
.industry-chip .chip-svg{width:18px;height:18px;color:var(--accent);flex-shrink:0;transition:color .25s}
.industry-chip:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-glow);transform:translateY(-2px)}
.case-link{display:inline-flex;align-items:center;gap:4px;font-size:13px;color:var(--accent);margin-top:10px;font-weight:500;transition:gap .2s}
.case-card:hover .case-link{gap:8px}

/* === Process === */
.process-list{max-width:700px;margin:0 auto;display:flex;flex-direction:column;gap:0}
.process-item{display:flex;gap:24px;position:relative;padding-bottom:36px}
.process-item:last-child{padding-bottom:0}
.process-item::before{content:'';position:absolute;left:27px;top:56px;bottom:0;width:1px;background:var(--border)}
.process-item:last-child::before{display:none}
.process-num{width:56px;height:56px;border-radius:16px;background:var(--bg-alt);border:1px solid var(--border);display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:700;color:var(--accent);flex-shrink:0;transition:all .3s}
.process-item:hover .process-num{border-color:var(--accent);box-shadow:0 0 20px var(--accent-glow)}
.process-body h3{font-size:17px;margin-bottom:6px;color:var(--text-primary)}
.process-body p{font-size:14px;color:var(--text-muted);line-height:1.6}
.process-duration{display:inline-block;margin-top:8px;font-size:12px;color:var(--accent);padding:2px 10px;border-radius:100px;background:var(--accent-glow);font-weight:500}

/* === Testimonials === */
.testimonials-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.testimonial-card{background:rgba(255,255,255,.5);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border:1px solid rgba(226,232,240,.5);border-radius:var(--radius);padding:28px;transition:all .3s}
.testimonial-card:hover{border-color:var(--border-hover);box-shadow:0 8px 30px rgba(0,0,0,.06);transform:translateY(-3px)}
.testimonial-stars{color:#F59E0B;font-size:13px;margin-bottom:14px;letter-spacing:2px}
.testimonial-quote{font-size:14px;color:var(--text-secondary);line-height:1.7;margin-bottom:20px}
.testimonial-author{display:flex;align-items:center;gap:12px}
.testimonial-avatar{width:36px;height:36px;border-radius:50%;background:var(--gradient);display:flex;align-items:center;justify-content:center;font-size:14px;color:#fff;font-weight:600}
.testimonial-name{font-size:14px;font-weight:600;color:var(--text-primary)}
.testimonial-role{font-size:12px;color:var(--text-muted)}

/* === FAQ === */
.faq-list{max-width:760px;margin:0 auto;display:flex;flex-direction:column;gap:8px}
.faq-item{background:rgba(255,255,255,.5);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border:1px solid rgba(226,232,240,.5);border-radius:var(--radius-sm);overflow:hidden;transition:all .3s}
.faq-item:hover{border-color:var(--border-hover);box-shadow:0 4px 16px rgba(0,0,0,.04)}
.faq-item.active{border-color:rgba(37,99,235,.3);box-shadow:0 2px 12px var(--accent-glow)}
.faq-q{padding:18px 24px;display:flex;justify-content:space-between;align-items:center;cursor:pointer;font-size:15px;font-weight:500;color:var(--text-primary);gap:16px;transition:color .2s}
.faq-q:hover{color:var(--accent)}
.faq-icon{width:24px;height:24px;border-radius:50%;border:1px solid var(--border);display:flex;align-items:center;justify-content:center;font-size:14px;color:var(--text-muted);flex-shrink:0;transition:all .3s}
.faq-item.active .faq-icon{background:var(--accent);border-color:var(--accent);color:#fff;transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s cubic-bezier(.22,1,.36,1)}
.faq-item.active .faq-a{max-height:400px}
.faq-a-inner{padding:0 24px 18px;font-size:14px;color:var(--text-secondary);line-height:1.8}

/* === CTA === */
.cta-section{position:relative;padding:96px 0;background:linear-gradient(180deg,#0F172A,#1E293B);overflow:hidden}
.cta-section::before{content:'';position:absolute;top:-200px;left:50%;width:600px;height:600px;background:radial-gradient(circle,var(--accent),transparent 70%);transform:translateX(-50%);opacity:.1;pointer-events:none}
.cta-glow{position:absolute;width:400px;height:400px;border-radius:50%;background:radial-gradient(circle,var(--purple),transparent 70%);opacity:.06;top:50%;right:-100px;transform:translateY(-50%);pointer-events:none}
.cta-inner{position:relative;max-width:680px;margin:0 auto;text-align:center}
.cta-inner h2{color:#fff;margin-bottom:16px}
.cta-inner p{color:rgba(255,255,255,.65);margin-bottom:36px;font-size:17px}
.cta-form{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:32px;max-width:480px;margin:0 auto;box-shadow:0 20px 60px rgba(0,0,0,.2)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.form-group{margin-bottom:14px;text-align:left}
.form-group label{display:block;font-size:13px;font-weight:500;color:var(--text-secondary);margin-bottom:6px}
.form-group label .req{color:#EF4444}
.form-group input,.form-group select,.form-group textarea{width:100%;padding:10px 14px;background:var(--bg-alt);border:1px solid var(--border);border-radius:var(--radius-xs);font-size:14px;color:var(--text-primary);font-family:inherit;transition:all .2s}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-glow);background:#fff}
.form-group textarea{resize:vertical;min-height:72px}
.form-submit{width:100%;padding:12px;background:var(--accent);color:#fff;border:none;border-radius:var(--radius-xs);font-size:15px;font-weight:600;cursor:pointer;transition:all .25s;font-family:inherit}
.form-submit:hover{background:var(--accent-dark);box-shadow:0 4px 16px var(--accent-glow)}
.cta-form .form-note{font-size:12px;color:var(--text-muted);margin-top:12px;text-align:center}
.form-result{margin-top:14px;padding:14px 16px;border-radius:var(--radius-xs);background:rgba(5,150,105,.08);border:1px solid rgba(5,150,105,.28);color:var(--green);font-size:14px;line-height:1.6;text-align:center}
.form-result.error{background:rgba(239,68,68,.08);border-color:rgba(239,68,68,.28);color:#dc2626}

/* === Footer === */
.footer{background:#0F172A;color:rgba(255,255,255,.6);padding:56px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer-brand p{font-size:14px;color:rgba(255,255,255,.45);line-height:1.7;margin-top:14px}
.footer h4{font-size:13px;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:rgba(255,255,255,.7);margin-bottom:16px}
.footer-links a{display:block;font-size:14px;color:rgba(255,255,255,.45);margin-bottom:10px;transition:color .2s}
.footer-links a:hover{color:#fff}
.footer-contact p{font-size:14px;color:rgba(255,255,255,.45);margin-bottom:8px;display:flex;align-items:center;gap:8px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px 0;display:flex;justify-content:space-between;align-items:center;font-size:13px;color:rgba(255,255,255,.3);flex-wrap:wrap;gap:12px}

/* === Float Sidebar === */
.float-sidebar{position:fixed;right:20px;bottom:100px;z-index:999;display:flex;flex-direction:column;gap:10px}
.float-btn{width:46px;height:46px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:20px;cursor:pointer;transition:all .3s;border:1px solid var(--border);background:#fff;box-shadow:0 2px 12px rgba(0,0,0,.08);color:var(--text-secondary)}
.float-btn:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px);box-shadow:0 4px 20px rgba(0,0,0,.1)}
.float-btn-top{width:38px;height:38px;opacity:0;pointer-events:none;transition:all .3s}
.float-btn-top.visible{opacity:1;pointer-events:all}

/* === Inner Page Banner === */
.page-banner{background:linear-gradient(180deg,#0F172A,#1E293B);padding:120px 0 60px;text-align:center;position:relative;overflow:hidden}
.page-banner::before{content:'';position:absolute;top:-200px;left:50%;width:500px;height:500px;background:radial-gradient(circle,var(--accent),transparent 70%);transform:translateX(-50%);opacity:.1;pointer-events:none}
.page-banner h1{color:#fff;position:relative;margin-bottom:12px}
.page-banner p{font-size:17px;color:rgba(255,255,255,.6);position:relative}
.breadcrumb{font-size:13px;color:rgba(255,255,255,.4);margin-bottom:16px;position:relative}
.breadcrumb a{color:rgba(255,255,255,.4);transition:color .2s}
.breadcrumb a:hover{color:#fff}
.breadcrumb span{margin:0 8px}

/* === Filters === */
.filter-bar{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:32px;justify-content:center}
.filter-btn{padding:7px 18px;border-radius:100px;font-size:13px;border:1px solid var(--border);background:#fff;color:var(--text-secondary);cursor:pointer;transition:all .25s;font-weight:500;font-family:inherit}
.filter-btn.active,.filter-btn:hover{background:var(--accent);color:#fff;border-color:var(--accent)}

/* === Tech Tags === */
.tech-tags-group{margin-bottom:16px}
.tech-tags-group-title{font-size:13px;font-weight:600;color:var(--text-muted);margin-bottom:10px;text-transform:uppercase;letter-spacing:.05em}
.tech-tags{display:flex;flex-wrap:wrap;gap:8px}
.tech-tag{padding:6px 14px;border-radius:var(--radius-xs);font-size:13px;color:var(--text-secondary);background:var(--bg-alt);border:1px solid var(--border);transition:all .25s}
.tech-tag:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-glow)}

/* === Case Detail === */
.case-detail-header{display:flex;gap:48px;align-items:flex-start;margin-bottom:48px}
.case-detail-visual{flex:1;border-radius:var(--radius);overflow:hidden;border:1px solid var(--border)}
.case-detail-info{flex:1}
.case-meta{display:flex;flex-wrap:wrap;gap:16px;margin-bottom:20px}
.case-meta-item{font-size:14px;color:var(--text-muted)}
.case-meta-item strong{color:var(--text-primary)}
.case-screenshots{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:24px 0}
.case-screenshot{border-radius:var(--radius-sm);overflow:hidden;border:1px solid var(--border);cursor:pointer;transition:all .3s}
.case-screenshot:hover{border-color:var(--border-hover);box-shadow:0 4px 16px rgba(0,0,0,.06)}
.case-results{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:24px 0}
.case-result-item{text-align:center;padding:24px;background:var(--bg-alt);border:1px solid var(--border);border-radius:var(--radius-sm);transition:all .3s}
.case-result-item:hover{border-color:var(--accent);box-shadow:0 2px 12px var(--accent-glow)}
.case-result-num{font-size:32px;font-weight:700;color:var(--accent)}
.case-result-label{font-size:13px;color:var(--text-muted);margin-top:4px}

/* === Timeline === */
.timeline{position:relative;padding-left:36px;max-width:640px;margin:0 auto}
.timeline::before{content:'';position:absolute;left:14px;top:8px;bottom:8px;width:2px;background:linear-gradient(180deg,var(--accent),var(--cyan));border-radius:1px}
.timeline-item{position:relative;margin-bottom:28px}
.timeline-item::before{content:'';position:absolute;left:-26px;top:4px;width:10px;height:10px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 3px #fff,0 0 12px var(--accent-glow)}
.timeline-year{font-size:13px;font-weight:700;color:var(--accent);margin-bottom:4px}
.timeline-text{font-size:15px;color:var(--text-secondary)}

/* === Stats === */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.stat-card{text-align:center;padding:32px 20px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius)}
.stat-num{font-size:42px;font-weight:700;font-variant-numeric:tabular-nums;color:var(--text-primary)}
.stat-label{font-size:14px;color:var(--text-muted);margin-top:6px}

/* === Blog === */
.blog-grid{display:grid;grid-template-columns:1fr 300px;gap:32px}
.blog-list{display:flex;flex-direction:column;gap:16px}
.blog-card{display:flex;gap:20px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:all .3s}
.blog-card:hover{border-color:var(--border-hover);box-shadow:0 4px 20px rgba(0,0,0,.04);transform:translateY(-2px)}
.blog-card-visual{width:220px;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:32px;overflow:hidden}
.blog-card-img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .5s cubic-bezier(.22,1,.36,1)}
.blog-card:hover .blog-card-img{transform:scale(1.05)}
.blog-card-body{padding:20px 20px 20px 0;flex:1;display:flex;flex-direction:column}
.blog-card-tag{font-size:12px;color:var(--accent);margin-bottom:6px;font-weight:500}
.blog-card-body h3{font-size:16px;margin-bottom:6px;color:var(--text-primary);transition:color .2s}
.blog-card:hover h3{color:var(--accent)}
.blog-card-body p{font-size:13px;color:var(--text-muted);line-height:1.6;flex:1}
.blog-card-meta{font-size:12px;color:var(--text-muted);margin-top:10px;opacity:.6}
.blog-sidebar{position:sticky;top:80px}
.sidebar-widget{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;margin-bottom:16px}
.sidebar-widget h4{font-size:14px;font-weight:600;margin-bottom:14px;color:var(--text-primary)}
.sidebar-tags{display:flex;flex-wrap:wrap;gap:6px}
.sidebar-tag{padding:5px 12px;border-radius:var(--radius-xs);font-size:12px;color:var(--text-muted);background:var(--bg-alt);border:1px solid var(--border);cursor:pointer;transition:all .2s}
.sidebar-tag:hover{border-color:var(--accent);color:var(--accent)}

/* === Contact === */
.contact-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin:0 auto 40px;max-width:720px}
.contact-card{text-align:center;padding:32px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);transition:all .3s}
.contact-card:hover{border-color:var(--accent);box-shadow:0 4px 20px var(--accent-glow);transform:translateY(-2px)}
.contact-card-icon{font-size:36px;margin-bottom:14px}
.contact-card h3{font-size:16px;margin-bottom:6px;color:var(--text-primary)}
.contact-card p{font-size:14px;color:var(--text-muted)}
.map-placeholder{width:100%;height:320px;background:var(--bg-alt);border:1px solid var(--border);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;color:var(--text-muted);margin-bottom:40px}

/* === Full-page Scroll Snap === */
.snap-section{min-height:100vh;display:flex;align-items:center;position:relative;overflow:hidden}
.snap-section.section{padding:96px 0}

/* === Scroll Dots Indicator === */
.scroll-dots{position:fixed;right:28px;top:50%;transform:translateY(-50%);z-index:998;display:flex;flex-direction:column;gap:12px}
.scroll-dot{width:10px;height:10px;border-radius:50%;background:var(--border);cursor:pointer;transition:all .3s;border:none;padding:0}
.scroll-dot:hover{background:var(--text-muted);transform:scale(1.3)}
.scroll-dot.active{background:var(--accent);transform:scale(1.3);box-shadow:0 0 10px var(--accent-glow)}

/* === Reveal (staggered) === */
.reveal{opacity:0;transform:translateY(34px) scale(.985);transition:opacity .7s cubic-bezier(.22,1,.36,1),transform .7s cubic-bezier(.22,1,.36,1)}
.reveal.visible{opacity:1;transform:none}
.reveal-d1{transition-delay:.1s}
.reveal-d2{transition-delay:.2s}
.reveal-d3{transition-delay:.3s}
.reveal-d4{transition-delay:.4s}

/* === Section enter animations === */
@keyframes fadeSlideUp{from{opacity:0;transform:translateY(40px)}to{opacity:1;transform:none}}
@keyframes fadeSlideLeft{from{opacity:0;transform:translateX(-40px)}to{opacity:1;transform:none}}
@keyframes fadeSlideRight{from{opacity:0;transform:translateX(40px)}to{opacity:1;transform:none}}
@keyframes scaleIn{from{opacity:0;transform:scale(.92)}to{opacity:1;transform:scale(1)}}
@keyframes glowPulse{0%,100%{opacity:.12;transform:translate(-50%,-50%) scale(1)}50%{opacity:.2;transform:translate(-50%,-50%) scale(1.1)}}

/* === Hero parallax glow === */
.hero{--px:50%;--py:40%}
.hero::before{left:var(--px);top:var(--py);transition:left .3s ease-out,top .3s ease-out}

/* === Bento card hover enhanced === */
.bento-card::after{content:'';position:absolute;inset:0;background:radial-gradient(circle at var(--mx,50%) var(--my,50%),rgba(37,99,235,.04),transparent 60%);opacity:0;transition:opacity .3s;pointer-events:none;border-radius:var(--radius)}
.bento-card:hover::after{opacity:1}

/* === Advantage card drag hint === */
.adv-track::after{content:'← 滑动查看更多 →';position:absolute;bottom:-4px;left:50%;transform:translateX(-50%);font-size:12px;color:var(--text-muted);opacity:.5;pointer-events:none}

/* === Hero floating particles (CSS-only) === */
.hero-particles{position:absolute;inset:0;z-index:1;pointer-events:none;overflow:hidden}
.hero-particle{position:absolute;border-radius:50%;background:rgba(255,255,255,.15);animation:particleFloat linear infinite}
@keyframes particleFloat{0%{transform:translateY(100vh) scale(0);opacity:0}10%{opacity:.6}90%{opacity:.6}100%{transform:translateY(-10vh) scale(1);opacity:0}}

/* === Section divider gradient line === */
.section-divider{height:1px;background:linear-gradient(90deg,transparent,var(--border),transparent);margin:0 auto;max-width:800px}

/* === Responsive === */
@media(max-width:1024px){
  .bento-grid{grid-template-columns:repeat(2,1fr)}
  .bento-card.featured{grid-column:span 1}
  .cases-grid{grid-template-columns:repeat(2,1fr)}
  .testimonials-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
  .blog-grid{grid-template-columns:1fr}
  .blog-sidebar{position:static}
  .hero-stats{gap:32px}
  .case-detail-header{flex-direction:column}
}
@media(max-width:768px){
  .section{padding:64px 0}
  .snap-section{min-height:auto;scroll-snap-align:none}
  html{scroll-snap-type:none}
  .scroll-dots{display:none}
  .navbar{height:56px}
  .nav-links{display:none;position:fixed;top:56px;left:0;right:0;bottom:0;background:#fff;flex-direction:column;padding:24px;gap:0;z-index:999;box-shadow:0 4px 20px rgba(0,0,0,.1)}
  .nav-links.open{display:flex}
  .nav-links a{padding:14px 0;border-bottom:1px solid var(--border);font-size:16px}
  .nav-phone{display:none}
  .hamburger{display:flex}
  .hero{min-height:auto;padding:100px 0 60px}
  .hero h1{font-size:30px}
  .hero-stats{flex-wrap:wrap;gap:24px}
  .bento-grid{grid-template-columns:1fr}
  .bento-card.featured{grid-column:span 1}
  .cases-grid{grid-template-columns:1fr}
  .testimonials-grid{grid-template-columns:1fr}
  .faq-list{gap:6px}
  .cta-form{padding:24px}
  .form-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .contact-cards{grid-template-columns:1fr}
  .case-results{grid-template-columns:repeat(2,1fr)}
  .case-screenshots{grid-template-columns:1fr}
  .blog-card{flex-direction:column}
  .blog-card-visual{width:100%;height:140px}
  .blog-card-body{padding:16px}
  .float-sidebar{right:12px;bottom:72px}
  .float-btn{width:40px;height:40px;font-size:18px;border-radius:12px}
}