/* ═══ RESET & FOUNDATION ═══ */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg-void:#060608;
  --bg-surface:#0c0c10;
  --bg-elevated:#141419;
  --bg-card:#1a1a22;
  --bg-card-hover:#22222e;
  --text-primary:#e8e6e1;
  --text-secondary:#9e9a92;
  --text-muted:#6b675f;
  --accent:#c8a44e;
  --accent-dim:#a6873a;
  --accent-glow:rgba(200,164,78,.12);
  --border:#2a2a32;
  --border-light:#3a3a44;
  --radius:2px;
  --radius-lg:6px;
  --font-display:'Playfair Display',Georgia,'Noto Serif SC',serif;
  --font-body:'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  --font-mono:'JetBrains Mono','SF Mono',monospace;
  --max-w:1200px;
  --gutter:clamp(16px,4vw,48px);
}
html{scroll-behavior:smooth;font-size:16px;-webkit-text-size-adjust:100%}
body{font-family:var(--font-body);background:var(--bg-void);color:var(--text-primary);line-height:1.75;overflow-x:hidden;-webkit-font-smoothing:antialiased;padding-bottom:74px}
img{max-width:100%;height:auto;display:block}
a{color:var(--accent);text-decoration:none;transition:color .2s}
a:hover{color:var(--text-primary)}
h1,h2,h3{font-family:var(--font-display);font-weight:700;line-height:1.25}
ul,ol{list-style:none}

/* ═══ UTILITY ═══ */
.wrap{max-width:var(--max-w);margin:0 auto;padding:0 var(--gutter)}
.label-tag{display:inline-block;font-size:.7rem;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);border:1px solid var(--accent-dim);padding:3px 12px;border-radius:20px;font-family:var(--font-mono);margin-bottom:1rem}
.sec-intro{color:var(--text-secondary);font-size:1.05rem;max-width:680px;margin-bottom:2.5rem;line-height:1.85}

/* ═══ HEADER ═══ */
.hd{position:fixed;top:0;left:0;width:100%;z-index:900;background:rgba(6,6,8,.85);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-bottom:1px solid rgba(255,255,255,.04);transition:background .3s}
.hd-inner{display:flex;align-items:center;justify-content:space-between;height:64px;max-width:var(--max-w);margin:0 auto;padding:0 var(--gutter)}
.brand{display:flex;align-items:center;gap:10px}
.brand img{height:28px;width:28px}
.brand-text{font-family:var(--font-display);font-size:1.05rem;color:var(--text-primary);letter-spacing:.03em}
.brand-text span{color:var(--accent);margin-left:4px}
.hd nav ul{display:flex;gap:0}
.hd nav a{display:block;padding:8px 14px;font-size:.82rem;color:var(--text-secondary);letter-spacing:.04em;transition:color .2s,background .2s;border-radius:var(--radius)}
.hd nav a:hover{color:var(--text-primary);background:rgba(255,255,255,.04)}
.hd-cta{font-size:.8rem;padding:8px 20px;background:var(--accent);color:var(--bg-void);border-radius:var(--radius);font-weight:600;transition:transform .2s,box-shadow .2s}
.hd-cta:hover{transform:translateY(-1px);box-shadow:0 4px 20px rgba(200,164,78,.25);color:var(--bg-void)}
.nav-toggle{display:none;background:none;border:none;color:var(--text-primary);font-size:1.5rem;cursor:pointer;padding:4px}

/* ═══ HERO ═══ */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;overflow:hidden;padding:120px 0 80px}
.hero::before{content:'';position:absolute;inset:0;background:url('https://newedger.bj.bcebos.com/site-images/21x9/9.webp') center/cover no-repeat;z-index:0}
.hero::after{content:'';position:absolute;inset:0;background:rgba(6,6,8,.72);z-index:1}
.hero-inner{position:relative;z-index:2;max-width:var(--max-w);margin:0 auto;padding:0 var(--gutter);display:grid;grid-template-columns:1fr 380px;gap:60px;align-items:center}
.hero-content{max-width:660px}
.hero-eyebrow{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.2em;color:var(--accent);margin-bottom:1.2rem;text-transform:uppercase}
.hero h1{font-size:clamp(2rem,5vw,3.2rem);color:#fff;margin-bottom:1.2rem;line-height:1.18}
.hero h1 em{font-style:normal;color:var(--accent)}
.hero-sub{font-size:1.1rem;color:rgba(255,255,255,.7);line-height:1.85;margin-bottom:2rem;max-width:560px}
.hero-sub strong{color:rgba(255,255,255,.92);font-weight:600}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:2.5rem}
.btn-primary{display:inline-flex;align-items:center;gap:8px;padding:14px 32px;background:var(--accent);color:var(--bg-void);font-weight:700;font-size:.92rem;border-radius:var(--radius);transition:all .25s}
.btn-primary:hover{background:#d4b058;transform:translateY(-2px);box-shadow:0 8px 30px rgba(200,164,78,.3);color:var(--bg-void)}
.btn-ghost{display:inline-flex;align-items:center;gap:8px;padding:14px 28px;border:1px solid rgba(255,255,255,.2);color:rgba(255,255,255,.8);font-size:.92rem;border-radius:var(--radius);transition:all .25s}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.hero-trust{display:flex;gap:24px;flex-wrap:wrap}
.hero-trust-item{font-size:.78rem;color:rgba(255,255,255,.5);display:flex;align-items:center;gap:6px}
.hero-trust-item::before{content:'';width:6px;height:6px;background:var(--accent);border-radius:50%;flex-shrink:0}
.hero-card{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);border-radius:var(--radius-lg);padding:28px;backdrop-filter:blur(12px)}
.hero-card-title{font-size:.78rem;color:var(--accent);font-family:var(--font-mono);letter-spacing:.12em;margin-bottom:16px;text-transform:uppercase}
.hero-card-list{display:flex;flex-direction:column;gap:12px}
.hero-card-list a{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.06);border-radius:var(--radius);font-size:.88rem;color:var(--text-primary);transition:all .2s}
.hero-card-list a:hover{background:rgba(200,164,78,.08);border-color:var(--accent-dim)}
.hero-card-list a span:last-child{color:var(--text-muted);font-size:.75rem}

/* ═══ SECTIONS COMMON ═══ */
.sc{padding:clamp(60px,8vw,100px) 0}
.sc-alt{background:var(--bg-surface)}
.sc-dark{background:var(--bg-elevated)}
.sc-head{margin-bottom:clamp(32px,5vw,56px)}
.sc h2{font-size:clamp(1.6rem,3.5vw,2.4rem);margin-bottom:.75rem;color:var(--text-primary)}
.sc h2 em{font-style:normal;color:var(--accent)}

/* ═══ MODULE: 核心认知 (ABOUT) ═══ */
.cognition-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.cognition-text h3{font-size:1.15rem;color:var(--accent);margin-bottom:.8rem;font-family:var(--font-body);font-weight:600}
.cognition-text p{color:var(--text-secondary);margin-bottom:1.2rem;line-height:1.85}
.cognition-text p strong{color:var(--text-primary)}
.cognition-visual{position:relative;border-radius:var(--radius-lg);overflow:hidden;aspect-ratio:3/2}
.cognition-visual img{width:100%;height:100%;object-fit:cover}
.cognition-visual::after{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(200,164,78,.1),transparent 60%);pointer-events:none}
.cognition-pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:48px}
.pillar{padding:28px 24px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);transition:border-color .3s,transform .3s}
.pillar:hover{border-color:var(--accent-dim);transform:translateY(-3px)}
.pillar-num{font-family:var(--font-display);font-size:2rem;color:var(--accent);opacity:.4;margin-bottom:8px}
.pillar h3{font-size:1rem;margin-bottom:.6rem}
.pillar p{font-size:.88rem;color:var(--text-secondary);line-height:1.7}

/* ═══ MODULE: 产品矩阵 (SERVICES) ═══ */
.matrix-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.matrix-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;transition:border-color .3s,transform .3s}
.matrix-card:hover{border-color:var(--accent-dim);transform:translateY(-4px)}
.matrix-card-img{aspect-ratio:4/5;overflow:hidden;background:var(--bg-elevated)}
.matrix-card-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.matrix-card:hover .matrix-card-img img{transform:scale(1.03)}
.matrix-card-body{padding:24px}
.matrix-card-body h3{font-size:1.05rem;margin-bottom:.5rem;font-family:var(--font-body);font-weight:600}
.matrix-card-body p{font-size:.86rem;color:var(--text-secondary);line-height:1.7}
.matrix-card-tag{display:inline-block;font-size:.7rem;color:var(--accent);background:var(--accent-glow);padding:2px 10px;border-radius:12px;margin-bottom:8px;font-family:var(--font-mono)}

/* ═══ MODULE: 型号解读 (COMPARE) ═══ */
.decode-table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
.decode-table{width:100%;border-collapse:collapse;font-size:.88rem}
.decode-table thead{background:var(--bg-card)}
.decode-table th{padding:16px 20px;text-align:left;color:var(--accent);font-weight:600;font-size:.78rem;letter-spacing:.08em;text-transform:uppercase;border-bottom:2px solid var(--accent-dim);white-space:nowrap}
.decode-table td{padding:14px 20px;border-bottom:1px solid var(--border);color:var(--text-secondary);vertical-align:top}
.decode-table tr:hover td{background:rgba(200,164,78,.03)}
.decode-table td:first-child{color:var(--text-primary);font-weight:600;white-space:nowrap}
.decode-verdict{margin-top:32px;padding:24px;background:var(--bg-card);border-left:3px solid var(--accent);border-radius:0 var(--radius-lg) var(--radius-lg) 0}
.decode-verdict p{color:var(--text-secondary);font-size:.92rem;line-height:1.8}
.decode-verdict strong{color:var(--text-primary)}

/* ═══ MODULE: 部署路径 (GUIDE) ═══ */
.pathway-steps{display:grid;gap:0;position:relative}
.pathway-step{display:grid;grid-template-columns:64px 1fr;gap:24px;padding:32px 0;border-bottom:1px solid var(--border)}
.pathway-step:last-child{border-bottom:none}
.step-marker{display:flex;flex-direction:column;align-items:center}
.step-num{width:48px;height:48px;display:flex;align-items:center;justify-content:center;border:2px solid var(--accent-dim);border-radius:50%;font-family:var(--font-display);font-size:1.1rem;color:var(--accent);flex-shrink:0}
.step-line{flex:1;width:2px;background:var(--border);margin-top:8px}
.pathway-step:last-child .step-line{display:none}
.step-body h3{font-size:1.05rem;margin-bottom:.5rem;font-family:var(--font-body);font-weight:600}
.step-body p{color:var(--text-secondary);font-size:.9rem;line-height:1.8}

/* ═══ MODULE: 应用图景 (SCENES) ═══ */
.landscape-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.landscape-item{padding:32px 28px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);transition:all .3s}
.landscape-item:hover{border-color:var(--accent-dim);background:var(--bg-card-hover)}
.landscape-icon{font-size:1.6rem;margin-bottom:12px}
.landscape-item h3{font-size:1rem;margin-bottom:.5rem;font-family:var(--font-body);font-weight:600}
.landscape-item p{font-size:.86rem;color:var(--text-secondary);line-height:1.75}

/* ═══ MODULE: 安全纵深 (SAFETY) ═══ */
.depth-list{display:flex;flex-direction:column;gap:16px;max-width:800px}
.depth-item{padding:24px 28px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);display:grid;grid-template-columns:32px 1fr;gap:16px;align-items:start}
.depth-item-icon{width:32px;height:32px;display:flex;align-items:center;justify-content:center;color:var(--accent);font-size:1.2rem;flex-shrink:0;margin-top:2px}
.depth-item h3{font-size:.96rem;margin-bottom:.4rem;font-family:var(--font-body);font-weight:600}
.depth-item p{font-size:.86rem;color:var(--text-secondary);line-height:1.75}

/* ═══ MODULE: 术语图谱 (GLOSSARY) ═══ */
.lexicon-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.lexicon-item{padding:24px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg)}
.lexicon-term{font-size:1rem;font-weight:600;margin-bottom:.4rem;display:flex;align-items:center;gap:8px}
.lexicon-en{font-family:var(--font-mono);font-size:.75rem;color:var(--accent);background:var(--accent-glow);padding:2px 8px;border-radius:10px}
.lexicon-def{font-size:.86rem;color:var(--text-secondary);line-height:1.8}

/* ═══ MODULE: FAQ ═══ */
.inquiry-list{max-width:820px}
.inquiry-pair{border-bottom:1px solid var(--border);padding:24px 0}
.inquiry-pair:first-child{padding-top:0}
.inquiry-q{font-size:1rem;font-weight:600;margin-bottom:.6rem;color:var(--text-primary);padding-left:24px;position:relative}
.inquiry-q .faq-q{display:inline}
.inquiry-q::before{content:'Q';position:absolute;left:0;top:1px;font-family:var(--font-display);font-size:.82rem;color:var(--accent);font-weight:700}
.inquiry-a{font-size:.9rem;color:var(--text-secondary);line-height:1.85;padding-left:24px}
.inquiry-a strong{color:var(--text-primary);font-weight:600}

/* ═══ MODULE: 信任基座 (TRUST) ═══ */
.bedrock-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.bedrock-item{padding:20px 24px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg)}
.bedrock-label{font-size:.72rem;color:var(--accent);font-family:var(--font-mono);letter-spacing:.1em;text-transform:uppercase;margin-bottom:6px}
.bedrock-value{font-size:.92rem;color:var(--text-primary)}
.bedrock-value a{color:var(--accent)}

/* ═══ MODULE: CTA ═══ */
.converge{position:relative;overflow:hidden}
.converge::before{content:'';position:absolute;inset:0;background:url('https://newedger.bj.bcebos.com/site-images/21x9/2.webp') center/cover no-repeat}
.converge::after{content:'';position:absolute;inset:0;background:rgba(6,6,8,.78)}
.converge-inner{position:relative;z-index:2;text-align:center;padding:clamp(60px,10vw,100px) var(--gutter)}
.converge-title{font-family:var(--font-display);font-size:clamp(1.5rem,3.5vw,2.2rem);color:#fff;margin-bottom:1rem}
.converge-desc{color:rgba(255,255,255,.65);font-size:1rem;margin-bottom:2rem;max-width:560px;margin-left:auto;margin-right:auto;line-height:1.8}
.converge-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-bottom:2rem}
.converge-qr{display:inline-block;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-lg);padding:20px;margin-bottom:1rem}
.converge-qr img{width:140px;height:140px;border-radius:var(--radius)}
.converge-qr-label{font-size:.78rem;color:rgba(255,255,255,.5);margin-top:10px}
.converge-notice{font-size:.78rem;color:rgba(255,255,255,.35);max-width:500px;margin:0 auto;line-height:1.6}
.qr-text-card{min-width:180px;text-align:center}
.qr-icon{display:flex;align-items:center;justify-content:center;width:140px;height:140px;border-radius:var(--radius);background:rgba(200,164,78,.12);color:var(--accent);font-weight:700;letter-spacing:.08em}

/* ═══ FOOTER ═══ */
.ft{background:var(--bg-surface);border-top:1px solid var(--border);padding:48px 0 32px}
.ft-inner{max-width:var(--max-w);margin:0 auto;padding:0 var(--gutter)}
.ft-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:40px;margin-bottom:40px}
.ft-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.ft-brand img{height:24px;width:24px}
.ft-brand-name{font-family:var(--font-display);font-size:.95rem;color:var(--text-primary)}
.ft-desc{font-size:.82rem;color:var(--text-muted);line-height:1.7;margin-bottom:16px}
.ft-col-title{font-size:.72rem;color:var(--accent);font-family:var(--font-mono);letter-spacing:.12em;text-transform:uppercase;margin-bottom:14px}
.ft-col a{display:block;font-size:.84rem;color:var(--text-secondary);padding:4px 0;transition:color .2s}
.ft-col a:hover{color:var(--accent)}
.ft-bottom{border-top:1px solid var(--border);padding-top:24px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px}
.ft-copy{font-size:.75rem;color:var(--text-muted)}
.ft-policies{display:flex;gap:16px}
.ft-policies a{font-size:.75rem;color:var(--text-muted);transition:color .2s}
.ft-policies a:hover{color:var(--accent)}

/* ═══ MOBILE BAR ═══ */
.mobile-bar{display:none;position:fixed;bottom:0;left:0;width:100%;z-index:800;background:rgba(10,10,14,.95);backdrop-filter:blur(12px);border-top:1px solid var(--border);padding:10px var(--gutter);text-align:center}
.mobile-bar .v42-mobile-customer{display:block;padding:12px;background:var(--accent);color:var(--bg-void);font-weight:700;font-size:.9rem;border-radius:var(--radius)}

/* ═══ BACK TO TOP ═══ */
.backtop{position:fixed;bottom:80px;right:20px;width:44px;height:44px;background:var(--bg-card);border:1px solid var(--border);border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--text-secondary);font-size:1.1rem;cursor:pointer;z-index:700;opacity:0;transform:translateY(10px);transition:opacity .3s,transform .3s,border-color .2s;pointer-events:none}
.backtop.show{opacity:1;transform:translateY(0);pointer-events:auto}
.backtop:hover{border-color:var(--accent);color:var(--accent)}

/* ═══ ANIMATIONS ═══ */
@keyframes fadeUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}
.hero-content{animation:fadeUp .8s ease both}
.hero-card{animation:fadeUp .8s ease .2s both}

/* ═══ RESPONSIVE ═══ */
@media(max-width:960px){
  .hd nav ul{display:none}
  .nav-toggle{display:block}
  .nav-panel{position:fixed;top:64px;left:0;width:100%;background:var(--bg-surface);border-bottom:1px solid var(--border);padding:16px var(--gutter);display:none;flex-direction:column;gap:4px;max-height:calc(100vh - 64px);overflow-y:auto}
  .nav-panel.open{display:flex}
  .nav-panel a{padding:12px 0;font-size:.92rem;border-bottom:1px solid var(--border)}
  .hero-inner{grid-template-columns:1fr;gap:32px}
  .hero-card{max-width:400px}
  .cognition-grid{grid-template-columns:1fr}
  .matrix-grid{grid-template-columns:1fr 1fr}
  .landscape-grid{grid-template-columns:1fr}
  .lexicon-grid{grid-template-columns:1fr}
  .bedrock-grid{grid-template-columns:1fr}
  .ft-grid{grid-template-columns:1fr}
  .mobile-bar{display:none}
  .backtop{bottom:70px}
}
@media(max-width:768px){
  .mobile-bar{display:block}
  .backtop{bottom:84px}
}
@media(max-width:600px){
  .matrix-grid{grid-template-columns:1fr}
  .cognition-pillars{grid-template-columns:1fr}
  .hero h1{font-size:1.8rem}
  .hero-actions{flex-direction:column}
  .btn-primary,.btn-ghost{width:100%;justify-content:center}
}

/* v4.2 local repair helpers */
.hd-actions{display:flex;align-items:center;gap:12px}
.matrix-card-fit{background:var(--bg-card);display:flex;flex-direction:column;align-items:center;justify-content:center;padding:48px 28px;text-align:center;border-style:dashed}
.matrix-card-plus{font-size:2rem;margin-bottom:12px;opacity:.3}
.matrix-card-question{margin-bottom:.5rem}
.matrix-card-help{font-size:.86rem;color:var(--text-secondary);margin-bottom:16px}
.matrix-card-link{font-size:.85rem;color:var(--accent)}
.mobile-bar .v42-mobile-customer{display:block;box-shadow:0 8px 26px rgba(200,164,78,.24)}
.meta-note{font-size:.78rem;color:rgba(255,255,255,.45);max-width:620px;margin:0 auto;line-height:1.7}
.bedrock-note{grid-column:1/-1}
.ft-meta{font-size:.75rem;color:var(--text-muted);line-height:1.7}