:root {
  --bg: #06091a;
  --bg-soft: #0c1028;
  --surface: rgba(255,255,255,0.04);
  --surface-strong: rgba(255,255,255,0.07);
  --text: #e6eaf0;
  --text-muted: #97a0b8;
  --primary: #f0a830;
  --primary-strong: #ffc142;
  --primary-glow: rgba(240,168,48,0.3);
  --accent: #6366f1;
  --accent-soft: rgba(99,102,241,0.15);
  --teal: #10a37f;
  --teal-glow: rgba(16,163,127,0.15);
  --border: rgba(255,255,255,0.08);
  --shadow: 0 20px 45px rgba(0,0,0,0.45);
  --radius: 18px;
  --font: "Inter","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}

body{
  margin:0;color:var(--text);background:var(--bg);
  font-family:var(--font);line-height:1.7;
  text-rendering:optimizeLegibility;
  -webkit-font-smoothing:antialiased;
}

body::before{
  content:"";position:fixed;inset:0;z-index:-1;
  background:
    radial-gradient(70vw 55vw at 15% -10%,rgba(240,168,48,0.10),transparent 60%),
    radial-gradient(60vw 50vw at 80% 5%,rgba(99,102,241,0.12),transparent 55%),
    radial-gradient(50vw 45vw at 50% 85%,rgba(16,163,127,0.06),transparent 50%);
}

a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}

.skip-link{position:absolute;left:-9999px;top:-9999px}
.skip-link:focus{left:12px;top:12px;z-index:999;background:#fff;color:#000;padding:8px 10px;border-radius:10px}

.container{width:min(1140px,92vw);margin:0 auto}

/* ── Sections ── */
.section{padding:96px 0}
.section-alt{background:rgba(255,255,255,0.012);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.section-head{margin-bottom:40px}
.section-tag{margin:0;font-weight:700;color:var(--primary);letter-spacing:.08em;text-transform:uppercase;font-size:.78rem}
.section-head h2{margin:8px 0 0;font-size:clamp(1.6rem,3.2vw,2.3rem);line-height:1.3;color:#fff}
.section-desc{margin:12px 0 0;color:var(--text-muted);max-width:62ch}

/* ── Header ── */
.site-header{
  position:sticky;top:0;z-index:30;
  backdrop-filter:blur(20px);
  background:rgba(6,9,26,0.80);
  border-bottom:1px solid var(--border);
  transition:box-shadow .25s,background .25s;
}
.site-header.is-scrolled{box-shadow:0 8px 28px rgba(0,0,0,0.4);background:rgba(6,9,26,0.94)}

.nav-wrap{display:flex;align-items:center;justify-content:space-between;min-height:72px}

.brand{display:inline-flex;align-items:center;gap:10px;min-width:0}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:12px;
  background:linear-gradient(135deg,var(--primary) 0%,#e67e22 100%);
  color:#0a0e1a;font-weight:900;font-size:.78rem;letter-spacing:.04em;
}
.brand-text{font-weight:700;font-size:.95rem;white-space:nowrap;color:#fff}

.menu-toggle{
  display:none;width:42px;height:42px;
  border:1px solid var(--border);border-radius:12px;
  background:var(--surface);cursor:pointer;padding:10px 8px;
}
.menu-toggle span{display:block;height:2px;width:100%;background:var(--text);margin:4px 0;border-radius:10px}

.nav-links{display:flex;align-items:center;gap:8px;margin:0;padding:0;list-style:none}
.nav-links a{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:34px;padding:6px 14px;border-radius:999px;
  font-weight:600;font-size:.92rem;color:var(--text-muted);
  transition:background .2s,color .2s;
}
.nav-links a:hover,.nav-links a.active{color:var(--primary-strong);background:rgba(240,168,48,0.10)}
.nav-links .nav-cta{
  background:linear-gradient(130deg,var(--primary),var(--primary-strong));
  color:#0a0e1a;font-weight:700;border-radius:999px;
  padding:7px 18px;font-size:.88rem;
  box-shadow:0 4px 14px rgba(240,168,48,0.25);
  transition:transform .18s,box-shadow .18s,background .18s;
}
.nav-links .nav-cta:hover{transform:translateY(-1px);box-shadow:0 6px 20px rgba(240,168,48,0.35)}
.lang-btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:32px;padding:5px 14px;border-radius:999px;
  font-weight:700;font-size:.82rem;color:var(--text-muted);
  background:var(--surface);border:1px solid var(--border);
  cursor:pointer;transition:color .2s,background .2s,border-color .2s;
  font-family:var(--font);letter-spacing:.03em;
}
.lang-btn:hover{color:var(--primary-strong);border-color:rgba(240,168,48,0.3);background:rgba(240,168,48,0.08)}

/* ── Hero ── */
.hero{padding:110px 0 90px;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.2fr .8fr;align-items:center;gap:40px}
.hero-eyebrow{
  margin:0;display:inline-flex;padding:7px 16px;border-radius:999px;
  background:rgba(240,168,48,0.12);color:var(--primary);font-size:.82rem;font-weight:700;
  border:1px solid rgba(240,168,48,0.2);
}
.hero h1{margin:20px 0 14px;font-size:clamp(2rem,5vw,3.3rem);line-height:1.15;letter-spacing:-.02em;color:#fff}
.hero h1 span{
  background:linear-gradient(130deg,var(--primary),var(--primary-strong));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
}
.hero-desc{margin:0;color:var(--text-muted);max-width:58ch;font-size:1.06rem}

.hero-actions{margin-top:30px;display:flex;flex-wrap:wrap;gap:12px}

.btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:50px;padding:12px 24px;border-radius:14px;
  font-weight:700;font-size:.95rem;border:1px solid transparent;
  transition:transform .18s,box-shadow .18s,background .18s;cursor:pointer;
}
.btn:hover{transform:translateY(-2px)}

.btn-primary{
  color:#0a0e1a;
  background:linear-gradient(130deg,var(--primary) 0%,var(--primary-strong) 72%);
  box-shadow:0 14px 30px var(--primary-glow);
}
.btn-primary:hover{box-shadow:0 18px 36px rgba(240,168,48,0.38)}

.btn-secondary{border-color:var(--border);background:var(--surface);color:var(--text)}
.btn-secondary:hover{background:rgba(255,255,255,0.08)}

.hero-meta{margin-top:22px;display:flex;gap:20px;color:var(--text-muted);font-size:.88rem}
.hero-meta span{display:inline-flex;align-items:center;gap:6px}
.hero-meta span::before{content:"✓";color:var(--primary);font-weight:700}

/* ── Hero Visual ── */
.hero-visual{position:relative}
.hub-diagram{
  width:100%;max-width:440px;margin:0 auto;
  border-radius:24px;overflow:hidden;
  border:1px solid rgba(240,168,48,0.15);
  background:linear-gradient(160deg,rgba(240,168,48,0.06),rgba(99,102,241,0.05));
  box-shadow:0 24px 60px rgba(0,0,0,0.35);
  padding:30px;
}
.hub-diagram-inner{
  display:flex;flex-direction:column;align-items:center;gap:16px;
}
.hub-node{
  display:flex;align-items:center;justify-content:center;
  width:100%;padding:16px;border-radius:14px;
  font-weight:700;font-size:.88rem;text-align:center;
  transition:transform .3s,box-shadow .3s;
}
.hub-node:hover{transform:scale(1.03)}
.hub-node-team{
  background:rgba(99,102,241,0.12);border:1px solid rgba(99,102,241,0.2);color:#a5b4fc;
}
.hub-node-hub{
  background:linear-gradient(135deg,rgba(240,168,48,0.18),rgba(240,168,48,0.08));
  border:2px solid rgba(240,168,48,0.35);color:var(--primary-strong);
  font-size:1.1rem;padding:20px;
  box-shadow:0 0 30px rgba(240,168,48,0.12);
}
.hub-node-upstream{
  background:rgba(16,163,127,0.10);border:1px solid rgba(16,163,127,0.2);color:#6ee7b7;
}
.hub-connector{
  width:2px;height:18px;
  background:linear-gradient(180deg,rgba(240,168,48,0.4),rgba(99,102,241,0.3));
  border-radius:2px;
}
.hub-upstream-row{display:grid;grid-template-columns:1fr 1fr 1fr;gap:8px;width:100%}

/* ── Stats Bar ── */
.stats-bar{padding:42px 0;border-bottom:1px solid var(--border)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.stat-item h3{margin:0;font-size:clamp(1.8rem,4vw,2.6rem);color:var(--primary-strong);font-weight:800}
.stat-item p{margin:6px 0 0;color:var(--text-muted);font-size:.88rem}

/* ── Pain Points ── */
.pain-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.pain-card{
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius);padding:24px 20px;text-align:center;
  transition:transform .22s,border-color .22s;
}
.pain-card:hover{transform:translateY(-3px);border-color:rgba(255,100,100,0.25)}
.pain-icon{font-size:2rem;margin-bottom:12px}
.pain-card h3{margin:0 0 6px;font-size:1rem;color:#ff8a8a}
.pain-card p{margin:0;color:var(--text-muted);font-size:.88rem}

/* ── Solution Cards ── */
.solution-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.solution-card{
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius);padding:28px;
  transition:transform .22s,border-color .22s,box-shadow .22s;
}
.solution-card:hover{transform:translateY(-3px);border-color:rgba(240,168,48,0.25);box-shadow:0 14px 32px rgba(0,0,0,0.3)}
.solution-card .sol-icon{
  width:48px;height:48px;border-radius:14px;margin-bottom:14px;
  display:flex;align-items:center;justify-content:center;font-size:1.4rem;
  background:rgba(240,168,48,0.12);border:1px solid rgba(240,168,48,0.2);
}
.solution-card h3{margin:0 0 8px;font-size:1.05rem;color:#fff}
.solution-card p{margin:0;color:var(--text-muted);font-size:.92rem}

/* ── Architecture ── */
.arch-container{
  border-radius:22px;padding:36px;
  background:linear-gradient(160deg,rgba(99,102,241,0.06),rgba(240,168,48,0.04));
  border:1px solid rgba(99,102,241,0.15);
  box-shadow:var(--shadow);
}
.arch-flow{
  display:grid;grid-template-columns:1fr auto 1fr auto 1fr;align-items:center;gap:16px;
}
.arch-block{
  border-radius:16px;padding:24px;text-align:center;
  border:1px solid var(--border);background:var(--surface);
}
.arch-block h3{margin:0 0 8px;font-size:1rem;color:#fff}
.arch-block p{margin:0;color:var(--text-muted);font-size:.86rem}
.arch-block.arch-hub{
  background:linear-gradient(135deg,rgba(240,168,48,0.12),rgba(240,168,48,0.04));
  border-color:rgba(240,168,48,0.3);
}
.arch-block.arch-hub h3{color:var(--primary-strong)}
.arch-arrow{
  font-size:1.6rem;color:var(--primary);opacity:0.6;
}
.arch-upstream-chips{display:flex;flex-wrap:wrap;gap:6px;justify-content:center;margin-top:10px}
.arch-chip{
  display:inline-flex;padding:4px 10px;border-radius:999px;
  font-size:.76rem;font-weight:600;
  background:rgba(16,163,127,0.12);color:#6ee7b7;border:1px solid rgba(16,163,127,0.2);
}
.arch-label{
  display:inline-flex;margin-top:12px;padding:5px 12px;border-radius:999px;
  font-size:.78rem;font-weight:700;
  background:rgba(240,168,48,0.12);color:var(--primary);
}

/* ── Card Grid ── */
.card-grid{display:grid;gap:16px}
.card-grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}

.card{
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius);padding:24px;
  box-shadow:0 8px 24px rgba(0,0,0,0.2);
  transition:transform .22s,box-shadow .22s,border-color .22s;
}
.card:hover{transform:translateY(-3px);border-color:rgba(240,168,48,0.25);box-shadow:0 14px 32px rgba(0,0,0,0.3)}
.card h3{margin:0 0 8px;font-size:1.05rem;color:#fff}
.card p{margin:0;color:var(--text-muted);font-size:.93rem}

.card-icon{
  width:48px;height:48px;border-radius:14px;margin-bottom:14px;
  display:flex;align-items:center;justify-content:center;font-size:1.5rem;
  background:var(--accent-soft);
}

/* ── Pricing ── */
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.pricing-card{
  background:var(--surface);border:1px solid var(--border);
  border-radius:20px;padding:32px 24px;text-align:center;
  transition:transform .22s,border-color .22s,box-shadow .22s;position:relative;overflow:hidden;
}
.pricing-card:hover{transform:translateY(-4px);box-shadow:0 18px 40px rgba(0,0,0,0.35)}
.pricing-card.featured{border-color:var(--primary);background:linear-gradient(180deg,rgba(240,168,48,0.06),rgba(99,102,241,0.03))}
.pricing-badge{
  position:absolute;top:16px;right:-30px;
  background:var(--primary);color:#0a0e1a;font-size:.72rem;font-weight:800;
  padding:4px 36px;transform:rotate(45deg);letter-spacing:.04em;
}
.pricing-card h3{margin:0 0 6px;font-size:1.1rem;color:#fff}
.pricing-card .price{font-size:2rem;font-weight:800;color:var(--primary-strong);margin:16px 0 4px}
.pricing-card .price-unit{font-size:.85rem;color:var(--text-muted);font-weight:400}
.pricing-card .price-note{font-size:.82rem;color:var(--text-muted);margin:0 0 18px}
.pricing-card ul{list-style:none;padding:0;margin:0 0 24px;text-align:left;display:grid;gap:10px}
.pricing-card li{padding-left:22px;position:relative;color:var(--text-muted);font-size:.9rem}
.pricing-card li::before{content:"✓";position:absolute;left:0;color:var(--primary);font-weight:700}

/* ── Process ── */
.process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:step}
.process-step{
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius);padding:24px 20px;position:relative;
  counter-increment:step;
  transition:transform .22s,border-color .22s;
}
.process-step:hover{transform:translateY(-3px);border-color:rgba(240,168,48,0.25)}
.process-step::before{
  content:counter(step);display:flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:50%;margin-bottom:14px;
  background:linear-gradient(135deg,var(--primary),#e67e22);
  color:#0a0e1a;font-weight:800;font-size:.9rem;
}
.process-step h3{margin:0 0 6px;font-size:1rem;color:#fff}
.process-step p{margin:0;color:var(--text-muted);font-size:.88rem}

/* ── FAQ ── */
.faq-wrap{max-width:900px}
.faq-list{display:grid;gap:10px}
.faq-item{border:1px solid var(--border);border-radius:14px;background:var(--surface);padding:4px 18px}
.faq-question{
  width:100%;border:0;background:transparent;cursor:pointer;text-align:left;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:16px 0;font:inherit;font-weight:700;color:var(--text);
}
.faq-icon{position:relative;width:16px;height:16px;flex-shrink:0}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;top:7px;left:0;width:100%;height:2px;
  background:var(--primary);border-radius:10px;transition:transform .2s;
}
.faq-icon::after{transform:rotate(90deg)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .3s,padding-bottom .3s;color:var(--text-muted)}
.faq-answer p{margin:0}
.faq-item.is-open .faq-answer{max-height:400px;padding-bottom:14px}
.faq-item.is-open .faq-icon::after{transform:rotate(0)}

/* ── CTA ── */
.cta{padding-top:88px;padding-bottom:96px}
.cta-inner{
  text-align:center;border-radius:24px;
  border:1px solid rgba(240,168,48,0.3);
  background:linear-gradient(110deg,var(--accent) 0%,var(--primary) 100%);
  padding:64px 32px;color:#fff;box-shadow:0 24px 54px rgba(240,168,48,0.2);
}
.cta-inner h2{margin:0;font-size:clamp(1.7rem,3vw,2.4rem);line-height:1.2}
.cta-inner p{margin:16px auto 30px;color:rgba(255,255,255,0.88);max-width:56ch}
.cta-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.cta-inner .btn-primary{background:rgba(255,255,255,0.95);color:#0a1a14;box-shadow:0 10px 24px rgba(0,0,0,0.2)}
.cta-inner .btn-primary:hover{background:#fff}
.cta-inner .btn-secondary{border-color:rgba(255,255,255,0.4);background:rgba(255,255,255,0.1);color:#fff}
.cta-inner .btn-secondary:hover{background:rgba(255,255,255,0.2)}

/* ── Analogy Banner ── */
.analogy-banner{
  border-radius:20px;padding:34px;
  background:linear-gradient(135deg,rgba(240,168,48,0.08),rgba(99,102,241,0.05));
  border:1px solid rgba(240,168,48,0.18);
  display:grid;grid-template-columns:1fr auto;align-items:center;gap:24px;
}
.analogy-banner h3{margin:0 0 8px;color:#fff;font-size:1.15rem}
.analogy-banner p{margin:0;color:var(--text-muted);font-size:.93rem}
.analogy-badge{
  display:flex;flex-direction:column;align-items:center;gap:6px;
  padding:20px 28px;border-radius:16px;
  background:rgba(240,168,48,0.12);border:1px solid rgba(240,168,48,0.25);
}
.analogy-badge span:first-child{font-size:2.2rem}
.analogy-badge span:last-child{font-size:.85rem;font-weight:700;color:var(--primary-strong)}

/* ── Comparison Table ── */
.compare-table{
  width:100%;border-collapse:separate;border-spacing:0;
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius);overflow:hidden;
}
.compare-table th,.compare-table td{
  padding:16px 20px;text-align:left;border-bottom:1px solid var(--border);
}
.compare-table th{color:var(--text-muted);font-weight:600;font-size:.85rem;letter-spacing:.04em;text-transform:uppercase}
.compare-table td{color:var(--text);font-size:.92rem}
.compare-table tr:last-child td{border-bottom:none}
.compare-table .check{color:var(--primary);font-weight:700}
.compare-table .cross{color:#ff6b6b;font-weight:700}
.compare-table .col-hub{background:rgba(240,168,48,0.04)}
.compare-table th.col-hub{color:var(--primary-strong)}

/* ── Contact Modal ── */
.modal-overlay{
  position:fixed;inset:0;z-index:100;
  background:rgba(0,0,0,0.65);backdrop-filter:blur(8px);
  display:flex;align-items:center;justify-content:center;
  opacity:0;pointer-events:none;transition:opacity .3s ease;
}
.modal-overlay.is-open{opacity:1;pointer-events:auto}
.modal-card{
  position:relative;width:min(460px,90vw);
  background:linear-gradient(160deg,rgba(15,20,40,0.97),rgba(6,9,26,0.98));
  border:1px solid rgba(240,168,48,0.2);border-radius:24px;
  padding:36px 32px;box-shadow:0 32px 80px rgba(0,0,0,0.5);
  transform:translateY(20px) scale(0.97);transition:transform .3s ease;
}
.modal-overlay.is-open .modal-card{transform:translateY(0) scale(1)}
.modal-close{
  position:absolute;top:14px;right:18px;
  background:none;border:none;color:var(--text-muted);
  font-size:1.6rem;cursor:pointer;padding:4px 8px;border-radius:8px;
  transition:color .2s,background .2s;
}
.modal-close:hover{color:#fff;background:rgba(255,255,255,0.08)}
.modal-title{margin:0 0 6px;font-size:1.3rem;color:#fff}
.modal-desc{margin:0 0 24px;color:var(--text-muted);font-size:.92rem}
.modal-contact-item{
  display:flex;align-items:center;gap:14px;
  padding:16px;border-radius:14px;margin-bottom:12px;
  background:rgba(255,255,255,0.04);border:1px solid var(--border);
  transition:border-color .2s;
}
.modal-contact-item:hover{border-color:rgba(240,168,48,0.25)}
.modal-contact-item.highlight{border-color:rgba(240,168,48,0.4);background:rgba(240,168,48,0.06)}
.modal-contact-icon{font-size:1.5rem;flex-shrink:0}
.modal-contact-info{flex:1;display:flex;flex-direction:column;gap:2px;min-width:0}
.modal-contact-label{font-size:.78rem;color:var(--text-muted);font-weight:600}
.modal-contact-value{font-size:1.05rem;color:#fff;font-weight:700;word-break:break-all}
.modal-copy-btn{
  flex-shrink:0;padding:8px 16px;border-radius:10px;
  background:linear-gradient(130deg,var(--primary),var(--primary-strong));
  color:#0a0e1a;font-weight:700;font-size:.82rem;
  border:none;cursor:pointer;transition:transform .15s,box-shadow .15s;
  min-width:90px;text-align:center;
}
.modal-copy-btn:hover{transform:translateY(-1px);box-shadow:0 4px 14px var(--primary-glow)}
.modal-copy-btn .copy-done{color:#065f46;font-weight:800}
.modal-footer-note{margin:16px 0 0;text-align:center;color:var(--text-muted);font-size:.85rem}

/* ── Footer ── */
.site-footer{padding:56px 0 20px;margin-top:24px;border-top:1px solid var(--border);background:#040714}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:28px}
.footer-brand{margin:0;font-weight:800;color:#fff}
.footer-title{margin:0 0 10px;color:#fff;font-size:1rem}
.footer-note{margin:8px 0 0;color:var(--text-muted)}
.footer-list{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.footer-list a,.footer-list span{color:var(--text-muted);font-weight:500;font-size:.9rem}
.footer-list a:hover{color:var(--primary-strong)}
.copyright{margin:24px 0 0;text-align:center;color:var(--text-muted);font-size:.88rem}

/* ── Animations ── */
.fade-in{opacity:0;transform:translateY(24px);transition:opacity .6s ease,transform .6s ease}
.fade-in.is-visible{opacity:1;transform:translateY(0)}

@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
.float-anim{animation:float 4s ease-in-out infinite}

@keyframes pulse-glow{0%,100%{box-shadow:0 0 20px rgba(240,168,48,0.12)}50%{box-shadow:0 0 40px rgba(240,168,48,0.28)}}
.pulse-glow{animation:pulse-glow 3s ease-in-out infinite}

@keyframes shimmer{
  0%{background-position:-200% 0}
  100%{background-position:200% 0}
}
.shimmer-text{
  background:linear-gradient(90deg,var(--primary),var(--primary-strong),#fff,var(--primary-strong),var(--primary));
  background-size:200% auto;
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
  animation:shimmer 4s linear infinite;
}

/* ── Particle Canvas ── */
#particles-canvas{
  position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:0.4;
}

/* ── Responsive ── */
@media(max-width:1024px){
  .hero-grid{grid-template-columns:1fr}
  .hero-visual{max-width:500px;margin:0 auto}
  .pain-grid{grid-template-columns:repeat(2,1fr)}
  .solution-grid{grid-template-columns:1fr}
  .card-grid-3,.pricing-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .process-grid{grid-template-columns:repeat(2,1fr)}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .arch-flow{grid-template-columns:1fr;text-align:center}
  .arch-arrow{transform:rotate(90deg)}
  .analogy-banner{grid-template-columns:1fr}
  .compare-table{font-size:.85rem}
}

@media(max-width:860px){
  .menu-toggle{display:inline-block}
  .site-nav{position:relative}
  .nav-links{
    position:absolute;right:0;top:56px;min-width:220px;padding:10px;
    background:rgba(6,9,26,0.97);border:1px solid var(--border);
    border-radius:14px;box-shadow:0 18px 38px rgba(0,0,0,0.4);
    flex-direction:column;align-items:stretch;gap:4px;display:none;
  }
  .nav-links.is-open{display:flex}
  .nav-links a{justify-content:flex-start;border-radius:10px}
  body.nav-open{overflow:hidden}
  .hero{padding-top:76px}
  .card-grid-3{grid-template-columns:1fr}
  .section,.cta{padding:72px 0}
  .footer-grid{grid-template-columns:1fr}
}

@media(max-width:520px){
  .brand-text{display:none}
  .container{width:min(1140px,94vw)}
  .hero h1{letter-spacing:-.01em}
  .hero-actions{flex-direction:column}
  .hero-meta{flex-direction:column;gap:8px}
  .btn{width:100%}
  .section{padding:64px 0}
  .pricing-grid{grid-template-columns:1fr}
  .process-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .pain-grid{grid-template-columns:1fr}
  .hub-upstream-row{grid-template-columns:1fr}
}

@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}