/* pcroom.xyz shared base styles — v3 unified design system */
/* === CSS Variables === */
:root {
  --teal: #009688;
  --teal-dark: #00796b;
  --teal-light: #5dd5c8;
  --teal-bg: #f0fdfa;
  --dark: #0f172a;
  --blue-dark: #1a3a5c;
  --gray-900: #1e293b;
  --gray-700: #475569;
  --gray-500: #64748b;
  --gray-400: #94a3b8;
  --gray-300: #cbd5e1;
  --gray-200: #e2e8f0;
  --gray-100: #f1f5f9;
  --gray-50: #f6f8fb;
  --white: #fff;
  --red: #e74c3c;
  --purple: #8e44ad;
  --orange: #f08c2e;
  --green: #22c55e;
  --radius: 12px;
  --radius-pill: 100px;
  --shadow-sm: 0 2px 8px rgba(15,23,42,.04);
  --shadow-md: 0 10px 32px rgba(15,23,42,.08);
  --gap: 20px;
  --section-pad: 80px;
}

/* === Typography Scale === */
/* H1 Hero: 52px/800 | H2 Section: 28px/800 | H3 Card: 17px/700 | Body: 15px | Caption: 12px */
* { margin: 0; padding: 0; box-sizing: border-box; }
img { max-width: 100%; height: auto; }
body {
  font-family: -apple-system, "Microsoft YaHei", "PingFang SC", sans-serif;
  color: var(--gray-900); line-height: 1.7; background: #fafbfc; font-size: 15px;
}
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* === Header === */
.header { background: var(--white); border-bottom: 1px solid var(--gray-200); padding: 16px 0; position: sticky; top: 0; z-index: 100; }
.header .container { display: flex; align-items: center; justify-content: space-between; }
.logo { font-size: 20px; font-weight: 700; color: var(--dark); text-decoration: none; }
.logo span { color: var(--teal); }
.logo small { font-size: 11px; font-weight: 400; color: var(--gray-400); display: block; }
.nav { display: flex; gap: 28px; align-items: center; }
.nav a { color: var(--gray-700); text-decoration: none; font-size: 14px; font-weight: 500; transition: color .2s; }
.nav a:hover { color: var(--teal); }
.nav .active { color: var(--teal); font-weight: 600; }
.nav .cta-btn { background: var(--teal); color: var(--white); padding: 8px 20px; border-radius: 8px; font-weight: 600; }
.nav .cta-btn:hover { color: var(--white); background: var(--teal-dark); }
.lang-switch { font-size: 12px; font-weight: 700; padding: 6px 12px; border: 1.5px solid var(--teal); border-radius: 6px; margin-left: 6px; text-decoration: none; color: var(--dark); transition: all .2s; }
.lang-switch:hover { background: var(--teal); color: var(--white); }
.menu-toggle { display: none; background: none; border: none; font-size: 28px; color: var(--dark); cursor: pointer; padding: 4px; line-height: 1; }

/* === Sections === */
.section { padding: var(--section-pad) 0; }
.section-alt { background: var(--gray-50); }
.section-title { text-align: center; font-size: 28px; font-weight: 800; color: var(--dark); margin-bottom: 12px; letter-spacing: -0.3px; }
.section-sub { text-align: center; font-size: 15px; line-height: 1.7; color: var(--gray-500); max-width: 640px; margin: 0 auto 48px; }

/* === Group Routing Banner === */
.routing-banner { max-width: 1120px; margin: 0 auto; background: linear-gradient(135deg, #f8fafc, #eff6ff); border: 1px solid rgba(37,99,235,.14); border-radius: 16px; padding: 16px 18px; display: flex; gap: 12px; align-items: center; justify-content: space-between; flex-wrap: wrap; box-shadow: 0 10px 28px rgba(15,23,42,.06); }
.routing-banner-text { font-size: 14px; line-height: 1.8; color: #334155; }
.routing-banner-text strong { color: var(--dark); }
.routing-banner-links { white-space: normal; }
.routing-banner-links a { display: inline-block; margin: 4px 0 4px 10px; color: #2563eb; font-weight: 700; text-decoration: none; }
.routing-banner-links a:hover { color: var(--teal); }

/* === Hero === */
.hero { background: linear-gradient(135deg, var(--dark) 0%, var(--blue-dark) 50%, #0d6b63 100%); color: var(--white); padding: 80px 0 70px; }
.hero .container { display: grid; grid-template-columns: 1fr; gap: 48px; align-items: center; max-width: 800px; text-align: center; }
.hero h1 { font-size: 52px; font-weight: 800; line-height: 1.12; margin-bottom: 14px; letter-spacing: -0.5px; }
.hero h1 .highlight { color: var(--teal-light); }
.hero-slogan { font-size: 18px; font-weight: 600; color: rgba(255,255,255,.75); margin-bottom: 24px; line-height: 1.5; }
.hero p { font-size: 16px; margin-bottom: 28px; color: rgba(255,255,255,.7); line-height: 1.7; }
.hero-badge { display: inline-block; font-size: 12px; font-weight: 600; padding: 5px 16px; border-radius: var(--radius-pill); background: rgba(0,150,136,.15); color: var(--teal-light); margin-bottom: 16px; border: 1px solid rgba(0,150,136,.2); }
.hero-btns { display: flex; gap: 14px; justify-content: center; }
.hero-btns a { padding: 14px 32px; font-size: 15px; font-weight: 600; border-radius: 8px; text-decoration: none; display: inline-block; transition: all .2s; }
.hero-btns .btn-primary { background: var(--teal); color: var(--white); }
.hero-btns .btn-primary:hover { background: var(--teal-dark); transform: translateY(-1px); box-shadow: 0 4px 16px rgba(0,150,136,.3); }
.hero-btns .btn-outline { border: 2px solid rgba(255,255,255,.4); color: var(--white); }
.hero-btns .btn-outline:hover { border-color: var(--white); background: rgba(255,255,255,.06); }
.hero-visual img { width: 100%; height: auto; display: block; border-radius: var(--radius); }

/* === Hero Trust Strip (equal-width cards) === */
.hero-trust { display: grid; grid-template-columns: repeat(4,1fr); gap: 16px; margin-top: 36px; padding-top: 24px; border-top: 1px solid rgba(255,255,255,.1); }
.hero-trust-item { text-align: center; background: rgba(255,255,255,.06); border-radius: var(--radius); padding: 18px 12px; transition: background .2s; }
.hero-trust-item:hover { background: rgba(255,255,255,.1); }
.hero-trust-item .num { font-size: 28px; font-weight: 800; color: var(--teal-light); display: block; }
.hero-trust-item .label { font-size: 11px; color: rgba(255,255,255,.5); margin-top: 4px; display: block; }

/* === Cards (shared base) === */
.card { background: var(--white); border: 1px solid var(--gray-200); border-radius: var(--radius); transition: all .25s; box-shadow: var(--shadow-sm); padding: 28px 24px; }
.card:hover { border-color: var(--teal); box-shadow: var(--shadow-md); transform: translateY(-3px); }

/* === Service Cards === */
.services-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: var(--gap); }
.service-card { background: var(--white); border: 1px solid var(--gray-200); border-radius: var(--radius); padding: 28px 24px; transition: all .25s; box-shadow: var(--shadow-sm); position: relative; overflow: hidden; }
.service-card:hover { border-color: var(--teal); box-shadow: var(--shadow-md); transform: translateY(-3px); }
.service-card .icon { font-size: 32px; margin-bottom: 12px; display: block; }
.service-card h3 { font-size: 17px; font-weight: 700; color: var(--dark); margin-bottom: 8px; }
.service-card p { font-size: 14px; color: var(--gray-500); line-height: 1.7; }
.service-card .link { color: var(--teal); font-size: 13px; font-weight: 600; text-decoration: none; display: inline-block; margin-top: 10px; }
/* Left accent bar */
.service-card::before { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 3px; background: var(--gray-200); transition: background .25s; }
.service-card.accent-teal::before { background: var(--teal); }
.service-card.accent-orange::before { background: var(--orange); }
.service-card.accent-purple::before { background: var(--purple); }
.service-card.accent-teal { border-left: 3px solid var(--teal); }
.service-card.accent-orange { border-left: 3px solid var(--orange); border-color: #fef3e2; background: #fffcf7; }
.service-card.accent-purple { border-left: 3px solid var(--purple); border-color: #f3e8ff; background: #faf5ff; }
/* Corner badge */
.corner-badge { position: absolute; top: 10px; right: 10px; font-size: 10px; font-weight: 700; padding: 3px 10px; border-radius: var(--radius-pill); letter-spacing: 0.5px; text-transform: uppercase; }
.corner-badge.new { background: #fef3e2; color: var(--orange); }
.corner-badge.hot { background: #fee2e2; color: var(--red); }
/* Legacy htag (keep compatibility) */
.service-card .htag { display: inline-block; font-size: 10px; font-weight: 600; padding: 2px 8px; border-radius: 4px; vertical-align: middle; margin-left: 6px; }
.htag-new { background: #fef3e2; color: var(--orange); }
.htag-hot { background: #fee2e2; color: var(--red); }

/* === Architecture Stack (3-layer service model) === */
.arch-stack { display: flex; flex-direction: column; gap: 0; max-width: 800px; margin: 0 auto; }
.arch-layer { display: flex; align-items: stretch; gap: 28px; padding: 32px 28px; position: relative; }
.arch-layer-num { width: 52px; height: 52px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 22px; font-weight: 800; color: var(--white); flex-shrink: 0; }
.arch-layer-body { flex: 1; }
.arch-layer-body h3 { font-size: 19px; font-weight: 700; margin-bottom: 8px; }
.arch-layer-body ul { font-size: 14px; color: var(--gray-700); line-height: 1.9; list-style: none; padding: 0; columns: 2; }
.arch-layer-body ul li::before { content: '▸ '; color: var(--teal); font-size: 11px; }
.arch-layer-1 { background: var(--dark); border-radius: var(--radius) var(--radius) 0 0; }
.arch-layer-1 .arch-layer-num { background: var(--teal); }
.arch-layer-1 .arch-layer-body h3 { color: var(--white); }
.arch-layer-1 .arch-layer-body ul { color: rgba(255,255,255,.65); }
.arch-layer-2 { background: #1a344c; }
.arch-layer-2 .arch-layer-num { background: var(--teal); }
.arch-layer-2 .arch-layer-body h3 { color: var(--white); }
.arch-layer-2 .arch-layer-body ul { color: rgba(255,255,255,.65); }
.arch-layer-3 { background: #244a66; border-radius: 0 0 var(--radius) var(--radius); }
.arch-layer-3 .arch-layer-num { background: var(--teal-light); color: var(--dark); }
.arch-layer-3 .arch-layer-body h3 { color: var(--white); }
.arch-layer-3 .arch-layer-body ul { color: rgba(255,255,255,.7); }
.arch-connector { width: 2px; height: 0; background: rgba(255,255,255,.15); margin: 0 auto; }

/* === Timeline === */
.upgrade-section { background: var(--gray-50); }
.timeline { display: grid; grid-template-columns: repeat(5,1fr); gap: 0; margin-top: 36px; position: relative; }
.timeline::before { content: ''; position: absolute; top: 26px; left: 10%; right: 10%; height: 2px; background: var(--gray-200); z-index: 0; }
.tl-step { background: var(--white); border: 1px solid var(--gray-200); border-radius: var(--radius); padding: 28px 16px; text-align: center; transition: all .25s; box-shadow: var(--shadow-sm); position: relative; z-index: 1; margin: 0 6px; }
.tl-step:hover { border-color: var(--teal); transform: translateY(-2px); }
.tl-step .step-dot { width: 28px; height: 28px; border-radius: 50%; background: var(--gray-200); color: var(--gray-500); display: flex; align-items: center; justify-content: center; font-size: 13px; font-weight: 700; margin: 0 auto 10px; transition: all .25s; }
.tl-step.current { border-color: var(--teal); border-width: 2px; background: #e6f7f5; }
.tl-step.current .step-dot { background: var(--teal); color: var(--white); }
.tl-step.hot { border-color: var(--red); border-width: 2px; background: #fef8f7; }
.tl-step.hot .step-dot { background: var(--red); color: var(--white); }
.tl-step.innovate { border-color: var(--purple); border-width: 2px; background: #f8f4fc; }
.tl-step.innovate .step-dot { background: var(--purple); color: var(--white); }
.tl-step .step-num { font-size: 12px; font-weight: 700; color: var(--gray-400); letter-spacing: 1px; display: block; margin-bottom: 8px; }
.tl-step h4 { font-size: 15px; font-weight: 700; color: var(--dark); margin-bottom: 8px; }
.tl-step ul { font-size: 13px; color: var(--gray-500); line-height: 1.8; list-style: none; padding: 0; }
.tl-step.hot .step-num { color: var(--red); }
.tl-step.innovate .step-num { color: var(--purple); }
.tl-cta { text-align: center; margin-top: 32px; }
.tl-cta .btn-primary { padding: 14px 36px; font-size: 15px; }

/* === Case Cards === */
.cases-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: var(--gap); }
.case-card { border: 1px solid var(--gray-200); border-radius: var(--radius); overflow: hidden; background: var(--white); transition: all .25s; box-shadow: var(--shadow-sm); display: flex; flex-direction: column; }
.case-card:hover { border-color: var(--teal); box-shadow: var(--shadow-md); transform: translateY(-3px); }
.case-img { height: 100px; position: relative; display: flex; align-items: center; justify-content: center; }
.case-img-label { font-size: 15px; font-weight: 700; color: rgba(255,255,255,.9); }
.case-img-ai { background: linear-gradient(135deg, var(--blue-dark), #3b7bb5); }
.case-img-dc1 { background: linear-gradient(135deg, #0d4f3c, #1a8a6a); }
.case-img-dc2 { background: linear-gradient(135deg, #4a1a6b, #7c3a9e); }
.case-body { padding: 24px 20px 20px; flex: 1; display: flex; flex-direction: column; }
.case-body h4 { font-size: 17px; font-weight: 700; color: var(--dark); margin-bottom: 4px; }
.case-body .tag { font-size: 11px; font-weight: 600; color: var(--teal); background: #e6f7f5; padding: 2px 10px; border-radius: var(--radius-pill); display: inline-block; margin-bottom: 8px; width: fit-content; }
.case-body p { font-size: 14px; color: var(--gray-500); line-height: 1.6; flex: 1; }
.case-metrics { display: grid; grid-template-columns: repeat(3,1fr); gap: 8px; margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--gray-100); }
.case-metric-val { font-size: 20px; font-weight: 800; color: var(--teal); display: block; line-height: 1.2; }
.case-metric-label { font-size: 10px; color: var(--gray-400); display: block; margin-top: 2px; }
.case-metric { position: absolute; bottom: 12px; right: 14px; font-size: 15px; font-weight: 800; color: rgba(255,255,255,.9); }
.case-stats { display: flex; gap: 8px; margin-top: 10px; flex-wrap: wrap; }
.case-stats span { font-size: 11px; font-weight: 600; color: var(--teal); background: #e6f7f5; padding: 3px 10px; border-radius: 4px; }

/* === Pain / Industry Cards === */
.pain-grid { display: grid; grid-template-columns: repeat(5,1fr); gap: var(--gap); margin-bottom: 24px; }
.pain-card { background: var(--white); border: 1px solid var(--gray-200); border-radius: var(--radius); padding: 28px 24px; text-align: center; transition: all .25s; box-shadow: var(--shadow-sm); position: relative; }
.pain-card:hover { border-color: var(--teal); box-shadow: var(--shadow-md); transform: translateY(-3px); }
.pain-card a { text-decoration: none; color: inherit; display: block; }
.pain-icon { width: 48px; height: 48px; margin: 0 auto 14px; }
.pain-card h4 { font-size: 15px; font-weight: 700; color: var(--dark); margin-bottom: 6px; }
.pain-card p { font-size: 13px; color: var(--gray-500); line-height: 1.6; }
.pain-card .card-arrow { display: inline-block; margin-top: 10px; font-size: 13px; font-weight: 600; color: var(--teal); opacity: 0; transform: translateX(-4px); transition: all .25s; }
.pain-card:hover .card-arrow { opacity: 1; transform: translateX(0); }
.pain-cta { text-align: center; padding: 32px; background: linear-gradient(135deg,var(--dark),#1e3a5f); border-radius: var(--radius); color: var(--white); margin-top: 8px; }
.pain-cta p { font-size: 16px; font-weight: 600; margin-bottom: 16px; color: rgba(255,255,255,.9); }
.pain-cta a { text-decoration: none; }

/* === CTA Section === */
.cta-section { padding: 64px 0; text-align: center; background: linear-gradient(135deg,var(--dark),#1e3a5f); }
.cta-section h2 { font-size: 28px; font-weight: 800; color: var(--white); margin-bottom: 12px; }
.cta-section p { font-size: 15px; color: rgba(255,255,255,.65); margin-bottom: 28px; }
.cta-section .btn-primary { font-size: 16px; padding: 16px 40px; display: inline-block; background: var(--teal); color: var(--white); border-radius: 8px; text-decoration: none; font-weight: 600; transition: all .2s; }
.cta-section .btn-primary:hover { background: var(--teal-dark); transform: translateY(-1px); box-shadow: 0 4px 16px rgba(0,150,136,.3); }

/* === MVV Mission === */
.mvv-band { background: linear-gradient(135deg,var(--dark),#1e3a5f); padding: 48px 0; text-align: center; position: relative; overflow: hidden; }
.mvv-band::before { content: '\201C'; position: absolute; top: -10px; left: 50%; transform: translateX(-50%); font-size: 120px; color: rgba(0,150,136,.06); font-family: Georgia, serif; line-height: 1; pointer-events: none; }
.mvv-band .container { display: flex; justify-content: center; align-items: center; gap: 28px; max-width: 800px; margin: 0 auto; position: relative; z-index: 1; }
.mvv-band .mvv-item { text-align: center; }
.mvv-band .mvv-item .tag { font-size: 11px; font-weight: 700; color: rgba(0,150,136,.6); letter-spacing: 3px; display: block; margin-bottom: 12px; text-transform: uppercase; }
.mvv-band .mvv-item .val { font-size: 15px; line-height: 1.9; color: rgba(255,255,255,.85); max-width: 680px; margin: 0 auto; font-weight: 400; }
.mvv-band .divider { width: 1px; height: 28px; background: rgba(255,255,255,.1); flex-shrink: 0; }
.mvv-band .mvv-item:not(:first-child), .mvv-band .divider { display: none; }

/* === Delivery Results === */
.result-grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(240px,1fr)); gap: var(--gap); max-width: 980px; margin: 0 auto; }
.result-card { background: linear-gradient(135deg,#f8fafc,var(--teal-bg)); border: 1px solid var(--gray-200); border-radius: var(--radius); padding: 28px 24px; text-align: center; transition: all .25s; box-shadow: var(--shadow-sm); }
.result-card:hover { border-color: var(--teal); box-shadow: var(--shadow-md); transform: translateY(-3px); }
.result-card .r-num { font-size: 36px; font-weight: 800; color: var(--teal); margin-bottom: 8px; }
.result-card .r-title { font-size: 15px; font-weight: 700; color: var(--dark); margin-bottom: 6px; }
.result-card .r-desc { font-size: 13px; color: var(--gray-500); line-height: 1.7; }
.result-card .r-icon { width: 40px; height: 40px; margin: 0 auto 12px; }

/* === Logo Wall === */
.logo-wall { background: var(--white); padding: 32px 0; border-bottom: 1px solid var(--gray-100); }
.logo-wall .container { text-align: center; }
.logo-wall-label { font-size: 12px; color: var(--gray-400); text-transform: uppercase; letter-spacing: 2px; margin-bottom: 20px; }
/* Compact cert strip (trust bar) */
.cert-strip { display: flex; gap: 14px; flex-wrap: wrap; justify-content: center; margin-top: 16px; }
.cert-item { display: inline-flex; align-items: center; gap: 7px; font-size: 13px; font-weight: 600; color: var(--gray-900); background: var(--gray-50); padding: 8px 18px 8px 14px; border-radius: var(--radius-pill); border: 1px solid rgba(0,150,136,.12); box-shadow: var(--shadow-sm); transition: all .2s; }
.cert-item:hover { border-color: rgba(0,150,136,.3); box-shadow: var(--shadow-md); transform: translateY(-1px); }
.cert-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--teal); flex-shrink: 0; }

/* === Partner Logo Grid === */
.partner-grid { display: flex; justify-content: center; align-items: center; gap: 28px; flex-wrap: wrap; }
.partner-logo { font-size: 14px; font-weight: 600; color: var(--gray-500); padding: 14px 24px; border-radius: var(--radius); background: var(--gray-50); border: 1px solid transparent; transition: all .25s; cursor: default; }
.partner-logo:hover { color: var(--dark); background: var(--white); border-color: var(--gray-200); box-shadow: var(--shadow-sm); transform: translateY(-2px); }

/* === Cert Badge Grid === */
.cert-section { background: var(--gray-50); }
.cert-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: var(--gap); max-width: 900px; margin: 0 auto; }
.cert-badge { background: var(--white); border: 1px solid var(--gray-200); border-radius: var(--radius); padding: 24px 20px; display: flex; align-items: center; gap: 16px; transition: all .25s; box-shadow: var(--shadow-sm); }
.cert-badge:hover { border-color: var(--teal); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.cert-badge .cert-icon { width: 44px; height: 44px; flex-shrink: 0; }
.cert-badge .cert-info h4 { font-size: 14px; font-weight: 700; color: var(--dark); margin-bottom: 2px; }
.cert-badge .cert-info span { font-size: 11px; color: var(--gray-400); }

/* === Comparison Table === */
.compare-section { background: var(--white); }
.compare-table { width: 100%; max-width: 860px; margin: 0 auto; border-collapse: separate; border-spacing: 0; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-sm); border: 1px solid var(--gray-200); }
.compare-table th { font-size: 14px; font-weight: 700; padding: 16px 20px; text-align: left; border-bottom: 2px solid var(--gray-200); background: var(--gray-50); }
.compare-table th:first-child { color: var(--gray-500); width: 28%; }
.compare-table th:last-child { color: var(--teal); }
.compare-table td { font-size: 14px; padding: 14px 20px; border-bottom: 1px solid var(--gray-100); }
.compare-table td:first-child { color: var(--gray-700); font-weight: 600; }
.compare-table td:nth-child(2) { color: var(--gray-400); }
.compare-table td:last-child { color: var(--dark); font-weight: 500; background: #fafffe; }
.compare-table tr:last-child td { border-bottom: none; }
.compare-table tr:hover td { background: #f8fdfb; }
.compare-table tr:hover td:nth-child(2) { background: #fdfbfb; }
.compare-check { color: var(--teal); font-weight: 700; }
.compare-icon { display: inline-block; width: 20px; text-align: center; margin-right: 6px; }
.compare-icon.check { color: var(--teal); }
.compare-icon.x { color: #dc2626; }

/* === Buttons === */
.btn-primary { background: var(--teal); color: var(--white); font-weight: 600; border-radius: 8px; text-decoration: none; transition: all .2s; display: inline-block; }
.btn-primary:hover { background: var(--teal-dark); transform: translateY(-1px); box-shadow: 0 4px 16px rgba(0,150,136,.25); }
.btn-outline { border: 2px solid rgba(255,255,255,.5); color: var(--white); background: transparent; }

/* === Contact Section === */
.contact-section { background: var(--dark); color: var(--white); }
.contact-section .section-title { color: var(--white); }
.contact-section .section-sub { color: rgba(255,255,255,.55); }
.contact-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: var(--gap); }
.contact-item { text-align: center; padding: 24px 16px; }
.contact-item .c-icon { width: 40px; height: 40px; margin: 0 auto 12px; }
.contact-item h4 { font-size: 12px; font-weight: 700; color: rgba(255,255,255,.4); text-transform: uppercase; letter-spacing: 1.5px; margin-bottom: 10px; }
.contact-item .c-val { font-size: 14px; color: rgba(255,255,255,.8); line-height: 1.7; }
.contact-item .c-val a { color: var(--teal-light); text-decoration: none; }
.contact-item .c-val a:hover { color: var(--teal); }

/* === Footer === */
.footer { background: #0d1625; color: rgba(255,255,255,.55); padding: 48px 0 40px; font-size: 13px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; text-align: left; padding-bottom: 32px; border-bottom: 1px solid rgba(255,255,255,.08); }
.footer-brand .f-logo { font-size: 18px; font-weight: 700; color: var(--white); display: block; margin-bottom: 8px; }
.footer-brand .f-desc { font-size: 12px; color: rgba(255,255,255,.45); line-height: 1.7; }
.footer-col h4 { font-size: 11px; font-weight: 700; color: rgba(255,255,255,.4); text-transform: uppercase; letter-spacing: 1.5px; margin-bottom: 14px; }
.footer-col a { display: block; color: rgba(255,255,255,.5); text-decoration: none; font-size: 13px; margin-bottom: 8px; transition: color .2s; }
.footer-col a:hover { color: var(--teal-light); }
.footer-bottom { text-align: center; padding-top: 20px; font-size: 12px; color: rgba(255,255,255,.3); line-height: 1.8; }
.footer-bottom a { color: var(--teal-light); text-decoration: none; }
.footer-bottom a:hover { color: var(--teal); }
.footer-icp { margin-top: 6px; }


/* === Animations === */
@keyframes statIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
.stat .num { animation: statIn .6s ease-out both; }
.stat:nth-child(1) .num { animation-delay: .1s; }
.stat:nth-child(2) .num { animation-delay: .2s; }
.stat:nth-child(3) .num { animation-delay: .3s; }
.stat:nth-child(4) .num { animation-delay: .4s; }
.stat:nth-child(5) .num { animation-delay: .5s; }

/* === Misc === */
.hero-pattern { position: relative; overflow: hidden; }
.hero-pattern::before { content: ''; position: absolute; inset: 0; pointer-events: none; background-image: radial-gradient(circle, rgba(255,255,255,.06) 1px, transparent 1px); background-size: 28px 28px; }
.wave-divider { position: relative; height: 48px; overflow: hidden; }
.wave-divider::after { content: ''; position: absolute; bottom: 0; left: -5%; width: 110%; height: 40px; background: inherit; -webkit-mask: url("data:image/svg+xml,<svg viewBox='0 0 1200 40' xmlns='http://www.w3.org/2000/svg'><path d='M0 20 C200 0, 400 40, 600 20 C800 0, 1000 40, 1200 20 L1200 40 L0 40 Z' fill='black'/></svg>") center bottom no-repeat; mask: url("data:image/svg+xml,<svg viewBox='0 0 1200 40' xmlns='http://www.w3.org/2000/svg'><path d='M0 20 C200 0, 400 40, 600 20 C800 0, 1000 40, 1200 20 L1200 40 L0 40 Z' fill='black'/></svg>") center bottom no-repeat; -webkit-mask-size: cover; mask-size: cover; }
.carousel-wrap { position: relative; max-width: 800px; margin: 0 auto; overflow: hidden; padding: 0 48px; }
.carousel-track { display: flex; transition: transform .5s ease; }
.carousel-slide { min-width: 100%; padding: 0 4px; }
.carousel-card { background: var(--white); border-radius: var(--radius); padding: 36px 32px; text-align: center; border: 1px solid var(--gray-200); box-shadow: 0 2px 12px rgba(0,0,0,.03); }
.carousel-card .cq { font-size: 15px; line-height: 1.8; color: var(--gray-700); }
.carousel-card .cq::before { content: '\201C'; font-size: 48px; color: var(--teal); display: block; line-height: 1; margin-bottom: 8px; }
.carousel-card .ca { margin-top: 16px; font-weight: 700; color: var(--dark); font-size: 15px; }
.carousel-card .cr { font-size: 13px; color: var(--gray-400); margin-top: 2px; }
.carousel-dots { display: flex; justify-content: center; gap: 8px; margin-top: 16px; }
.carousel-dots button { width: 10px; height: 10px; border-radius: 50%; border: none; background: var(--gray-300); cursor: pointer; padding: 0; transition: background .3s; }
.carousel-dots button.active { background: var(--teal); }
.carousel-nav { position: absolute; top: 50%; transform: translateY(-50%); width: 40px; height: 40px; border-radius: 50%; border: 1px solid var(--gray-200); background: var(--white); cursor: pointer; font-size: 18px; color: var(--gray-700); z-index: 2; transition: box-shadow .2s; display: flex; align-items: center; justify-content: center; }
.carousel-nav:hover { box-shadow: 0 2px 8px rgba(0,0,0,.1); }
.carousel-prev { left: 4px; }
.carousel-next { right: 0; }

/* === Sub-page Shared === */
/* Info cards (contact, about) */
.info-card { background: var(--white); border: 1px solid var(--gray-200); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow-sm); transition: all .25s; }
.info-card:hover { border-color: var(--teal); box-shadow: var(--shadow-md); }
.info-card.accent-teal { border-top: 3px solid var(--teal); }
.info-card.accent-blue { border-top: 3px solid var(--blue-dark); }
.info-card.accent-orange { border-top: 3px solid var(--orange); }
.info-card.accent-red { border-top: 3px solid var(--red); }
/* Contact form */
.form-group { margin-bottom: 18px; }
.form-label { display: block; font-size: 13px; font-weight: 600; color: var(--dark); margin-bottom: 6px; }
.form-input, .form-textarea, .form-select { width: 100%; padding: 12px 14px; border: 1px solid var(--gray-200); border-radius: 8px; font-size: 14px; font-family: inherit; color: var(--gray-900); background: var(--white); transition: border-color .2s; }
.form-input:focus, .form-textarea:focus, .form-select:focus { border-color: var(--teal); outline: none; box-shadow: 0 0 0 3px rgba(0,150,136,.1); }
.form-textarea { min-height: 100px; resize: vertical; }
.form-submit { background: var(--teal); color: var(--white); border: none; padding: 14px 36px; border-radius: 8px; font-size: 15px; font-weight: 600; cursor: pointer; transition: all .2s; }
.form-submit:hover { background: var(--teal-dark); transform: translateY(-1px); box-shadow: 0 4px 16px rgba(0,150,136,.25); }
/* Highlight text */
.highlight-text { font-size: 16px; font-weight: 600; color: var(--dark); }
/* Consultation options */
.consult-grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(200px,1fr)); gap: 10px; }
.consult-option { border: 1px solid var(--gray-200); border-radius: var(--radius); padding: 16px; background: var(--gray-50); transition: all .2s; }
.consult-option:hover { border-color: var(--teal); background: var(--teal-bg); }
.consult-option h4 { font-size: 14px; font-weight: 700; color: var(--dark); margin-bottom: 4px; }
.consult-option p { font-size: 12px; line-height: 1.6; color: var(--gray-500); }
/* Spec tables */
.spec-table { width: 100%; border-collapse: collapse; }
.spec-table th { text-align: left; padding: 10px 16px; background: var(--gray-50); font-size: 13px; font-weight: 700; color: var(--dark); border-bottom: 2px solid var(--gray-200); }
.spec-table td { padding: 10px 16px; font-size: 13px; color: var(--gray-700); border-bottom: 1px solid var(--gray-100); }
/* Scenario cards */
.scenario-grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(260px,1fr)); gap: var(--gap); }
.scenario-card { background: var(--white); border: 1px solid var(--gray-200); border-radius: var(--radius); padding: 24px; transition: all .25s; box-shadow: var(--shadow-sm); }
.scenario-card:hover { border-color: var(--teal); transform: translateY(-2px); }
.scenario-card .s-icon { width: 48px; height: 48px; margin-bottom: 14px; }
.scenario-card h4 { font-size: 16px; font-weight: 700; color: var(--dark); margin-bottom: 8px; }
.scenario-card p { font-size: 13px; color: var(--gray-500); line-height: 1.6; }
/* Process flow */
.process-grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(200px,1fr)); gap: var(--gap); }
.process-step { text-align: center; padding: 24px 16px; position: relative; }
.process-step .step-num-circle { width: 44px; height: 44px; border-radius: 50%; background: var(--teal); color: var(--white); font-size: 18px; font-weight: 800; display: flex; align-items: center; justify-content: center; margin: 0 auto 12px; }
.process-step h4 { font-size: 15px; font-weight: 700; color: var(--dark); margin-bottom: 6px; }
.process-step p { font-size: 13px; color: var(--gray-500); line-height: 1.6; }
/* Value metric (big numbers like in liquid cooling) */
.value-metric { text-align: center; padding: 18px; flex: 1; min-width: 120px; }
.value-metric .val-num { font-size: 28px; font-weight: 800; color: var(--teal); }
.value-metric .val-label { font-size: 11px; font-weight: 700; color: var(--blue-dark); }
.value-metric .val-sub { font-size: 10px; color: var(--gray-400); }
/* Cooling/CDU cards */
.cdu-grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(280px,1fr)); gap: var(--gap); }
.cdu-card { background: var(--white); border: 1px solid var(--gray-200); border-radius: var(--radius); padding: 22px 18px; box-shadow: var(--shadow-sm); transition: all .25s; }
.cdu-card:hover { border-color: var(--teal); transform: translateY(-2px); }
.cdu-card.accent-orange { border-left: 3px solid var(--orange); }
.cdu-card.accent-red { border-left: 3px solid var(--red); }
.cdu-card .cdu-header { font-size: 16px; font-weight: 700; color: var(--dark); margin-bottom: 12px; }
/* Conversion checklist section */
.conversion-section { padding: 56px 20px; background: linear-gradient(135deg,var(--gray-50),#eff6ff); }
.conversion-grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(280px,1fr)); gap: 22px; max-width: 1120px; margin: 0 auto; }
.conversion-card { background: var(--white); border: 1px solid rgba(15,23,42,.08); border-radius: 18px; padding: 24px; box-shadow: 0 14px 36px rgba(15,23,42,.08); }
.conversion-card .cc-tag { font-size: 13px; color: var(--teal); font-weight: 800; margin-bottom: 8px; }
.conversion-card h2 { font-size: 26px; line-height: 1.35; margin-bottom: 12px; color: var(--dark); }
.conversion-card p { font-size: 14px; line-height: 1.85; color: var(--gray-700); }
/* Breadcrumb bar */
.breadcrumb-bar { font-size: 13px; color: var(--gray-400); padding: 12px 0; }
.breadcrumb-bar a { color: var(--teal); text-decoration: none; font-weight: 500; }

/* === Breadcrumb === */
.breadcrumb a { color: var(--teal); text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb span { color: var(--gray-500); }

/* === Focus & Accessibility === */
:focus-visible { outline: 2px solid var(--teal); outline-offset: 2px; border-radius: 2px; }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}

/* === Responsive === */
@media (max-width: 900px) {
  .hero h1 { font-size: 36px; }
  .hero .container { grid-template-columns: 1fr; gap: 36px; }
  .hero-visual { order: -1; text-align: center; }
  .hero-visual img { max-width: 280px; }
  .hero-trust { grid-template-columns: repeat(2,1fr); }
  .nav { display: none; flex-direction: column; background: var(--white); position: fixed; top: 60px; left: 0; right: 0; padding: 16px 24px; box-shadow: 0 8px 24px rgba(0,0,0,.1); z-index: 20; }
  .nav.open { display: flex; }
  .nav a { margin-left: 0; padding: 14px 0; border-bottom: 1px solid var(--gray-100); font-size: 16px; }
  .nav a:last-child { border-bottom: none; }
  .menu-toggle { display: block; }
  .pain-grid { grid-template-columns: repeat(3,1fr); }
  .services-grid, .timeline { grid-template-columns: repeat(2,1fr); }
  .cases-grid { grid-template-columns: repeat(2,1fr); }
  .footer-grid { grid-template-columns: repeat(2,1fr); }
  .contact-grid { grid-template-columns: repeat(2,1fr); }
  .cert-grid { grid-template-columns: repeat(2,1fr); }
  .arch-layer-body ul { columns: 1; }
}
@media (max-width: 600px) {
  .container { padding: 0 16px; }
  .hero { padding: 48px 0 36px; }
  .hero h1 { font-size: 26px; }
  .hero-slogan { font-size: 15px; }
  .hero p { font-size: 14px; }
  .hero-badge { font-size: 11px; padding: 4px 14px; }
  .hero-btns { flex-direction: column; align-items: center; }
  .hero-btns a { width: 100%; max-width: 260px; text-align: center; padding: 12px 24px; font-size: 14px; }
  .hero-trust { grid-template-columns: repeat(2,1fr); gap: 10px; }
  .hero-trust-item { padding: 14px 8px; }
  .hero-trust-item .num { font-size: 22px; }
  .section { padding: 48px 0; }
  .section-title { font-size: 22px; }
  .pain-grid { grid-template-columns: 1fr; }
  .services-grid, .timeline { grid-template-columns: 1fr; }
  .cases-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .contact-grid { grid-template-columns: 1fr; gap: 16px; }
  .cert-grid { grid-template-columns: 1fr; }
  .compare-table { font-size: 12px; }
  .timeline::before { display: none; }
  .arch-layer { flex-direction: column; gap: 16px; padding: 24px 18px; }
  .arch-layer-num { width: 40px; height: 40px; font-size: 18px; }
}

/* === Floating Sidebar (multi-item) === */
.sidebar-float { position: fixed; bottom: 28px; right: 28px; z-index: 999; display: flex; flex-direction: column-reverse; align-items: flex-end; gap: 10px; }
.sidebar-item { width: 46px; height: 46px; border-radius: 50%; background: var(--teal); display: flex; align-items: center; justify-content: center; cursor: pointer; transition: all .2s ease; box-shadow: 0 4px 16px rgba(0,150,136,.3); position: relative; flex-shrink: 0; }
.sidebar-item:hover { transform: scale(1.08); background: var(--teal-dark); }
.sidebar-item svg { width: 22px; height: 22px; fill: var(--white); display: block; }
.sidebar-tip { display: none; position: absolute; right: 58px; top: 50%; transform: translateY(-50%); background: var(--white); border-radius: 12px; box-shadow: 0 8px 32px rgba(0,0,0,.12); padding: 14px 20px; white-space: nowrap; z-index: 10; text-align: left; }
.sidebar-item:hover .sidebar-tip { display: block; animation: tipIn .2s ease; }
@keyframes tipIn { from { opacity: 0; transform: translateY(-50%) translateX(8px); } to { opacity: 1; transform: translateY(-50%) translateX(0); } }
.sidebar-tip .tip-tel { font-size: 15px; font-weight: 700; color: var(--gray-900); }
.sidebar-tip .tip-label { font-size: 11px; color: var(--gray-500); margin-top: 4px; white-space: normal; max-width: 200px; }
.sidebar-tip .tip-mobile { font-size: 14px; color: var(--gray-900); margin: 4px 0; }
.sidebar-tip .tip-mobile span { color: var(--gray-500); font-size: 12px; margin-left: 8px; }
.sidebar-tip .tip-email { font-size: 13px; color: var(--teal); word-break: break-all; }
.sidebar-tip .tip-copy-btn { display: inline-block; font-size: 11px; color: var(--white); background: var(--teal); padding: 2px 10px; border-radius: 4px; margin-left: 8px; cursor: pointer; font-weight: 600; border: none; }
.sidebar-tip .tip-copy-btn:hover { background: var(--teal-dark); }
.sidebar-tip .qr-row { display: flex; gap: 14px; }
.sidebar-tip .qr-col { text-align: center; }
.sidebar-tip .qr-col img { width: 72px; height: 72px; border-radius: 8px; border: 1px solid var(--gray-100); }
.sidebar-tip .qr-col .lbl { font-size: 10px; color: var(--gray-400); margin-top: 4px; }
.sidebar-toast { position: fixed; bottom: 100px; right: 28px; background: var(--dark); color: var(--white); padding: 8px 16px; border-radius: 8px; font-size: 13px; z-index: 9999; opacity: 0; transition: opacity .3s; pointer-events: none; }
.sidebar-toast.show { opacity: 1; }
@media (max-width: 600px) {
  .sidebar-float { bottom: 16px; right: 16px; gap: 8px; }
  .sidebar-item { width: 40px; height: 40px; }
  .sidebar-item svg { width: 18px; height: 18px; }
}

/* === Contact QR visible (replaces sidebar hover) === */
.contact-qr { display: flex; justify-content: center; gap: 40px; margin-top: 32px; padding-top: 28px; border-top: 1px solid #e2e8f0; }
.contact-qr-item { text-align: center; }
.contact-qr-item img { width: 80px; height: 80px; border-radius: 10px; border: 2px solid #e2e8f0; display: block; margin: 0 auto 8px; }
.contact-qr-item span { font-size: 12px; color: #64748b; display: block; }
@media (max-width: 600px) {
  .contact-qr { gap: 24px; }
  .contact-qr-item img { width: 72px; height: 72px; }
}

/* ===== HERO UPGRADE ===== */
.hero-pattern { position: relative; overflow: hidden; }
.hero-glow { position: absolute; width: 700px; height: 700px; background: radial-gradient(circle, rgba(0,150,136,.12) 0%, transparent 70%); top: -250px; right: -100px; pointer-events: none; animation: heroGlow 8s ease-in-out infinite alternate; }
@keyframes heroGlow { 0% { transform: translate(0,0) scale(1); opacity: .5; } 100% { transform: translate(-60px,40px) scale(1.3); opacity: 1; } }
.gradient-text { background: linear-gradient(135deg, var(--teal-light), var(--teal)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-offer { display: flex; align-items: center; gap: 10px; margin: 16px 0 20px; padding: 10px 16px; background: rgba(0,150,136,.08); border-radius: 8px; border: 1px solid rgba(0,150,136,.15); flex-wrap: wrap; }
.offer-badge { font-size: 11px; font-weight: 700; color: var(--white); background: var(--teal); padding: 2px 10px; border-radius: 100px; letter-spacing: .5px; }
.hero-offer span { font-size: 13px; color: var(--white); }
.offer-link { font-size: 13px; font-weight: 600; color: var(--teal-light); text-decoration: none; margin-left: auto; }
.offer-link:hover { color: var(--white); }

/* ===== LEAD MAGNET ===== */
.lead-magnet-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.lead-badge { display: inline-block; font-size: 12px; font-weight: 700; color: var(--teal); background: var(--teal-bg); padding: 4px 14px; border-radius: 100px; margin-bottom: 12px; }
.lead-benefits { list-style: none; padding: 0; margin: 20px 0 0; }
.lead-benefits li { font-size: 14px; color: var(--gray-700); padding: 6px 0; }
.lead-form { background: var(--white); padding: 28px 24px; border-radius: var(--radius); box-shadow: var(--shadow-md); }
.lead-form h3 { font-size: 18px; margin-bottom: 16px; color: var(--dark); }
.lead-form input { width: 100%; padding: 10px 14px; border: 1px solid var(--gray-200); border-radius: 8px; font-size: 14px; margin-bottom: 12px; box-sizing: border-box; }
.lead-form input:focus { outline: none; border-color: var(--teal); box-shadow: 0 0 0 3px rgba(0,150,136,.1); }
.btn-block { width: 100%; text-align: center; }
.lead-note { font-size: 11px; color: var(--gray-400); text-align: center; margin-top: 10px; }
@media (max-width: 600px) { .lead-magnet-inner { grid-template-columns: 1fr; gap: 24px; } }

/* ===== TESTIMONIALS ===== */
.testimonials-section { background: var(--dark); color: var(--white); }
.testimonials-section .section-title { color: var(--white); }
.testimonials-section .section-sub { color: rgba(255,255,255,.5); }
.testimonial-track { display: flex; gap: 20px; overflow: hidden; max-width: 800px; margin: 0 auto; }
.testimonial-card { flex: 0 0 100%; padding: 32px; text-align: center; }
.tq { font-size: 16px; line-height: 1.8; color: rgba(255,255,255,.85); font-style: italic; margin-bottom: 20px; quotes: “ ” ‘ ’; }
.tq::before { content: “; font-size: 48px; color: var(--teal); opacity: .3; line-height: 0; vertical-align: -20px; margin-right: 6px; }
.ta { font-size: 13px; color: rgba(255,255,255,.4); }
.ta strong { color: rgba(255,255,255,.7); display: block; margin-bottom: 2px; }
.testimonial-dots { text-align: center; margin-top: 16px; }
.testimonial-dots .dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: rgba(255,255,255,.2); margin: 0 4px; cursor: pointer; transition: all .2s; }
.testimonial-dots .dot.active { background: var(--teal); width: 24px; border-radius: 4px; }
@media (max-width: 600px) { .testimonial-card { padding: 20px 12px; } .tq { font-size: 14px; } }

/* ===== EXIT POPUP ===== */
.exit-popup { display: none; position: fixed; inset: 0; z-index: 99999; background: rgba(0,0,0,.5); align-items: center; justify-content: center; }
.exit-popup.visible { display: flex; animation: popupIn .3s ease; }
@keyframes popupIn { from { opacity: 0; transform: scale(.95); } to { opacity: 1; transform: scale(1); } }
.exit-popup-content { background: var(--white); border-radius: 16px; padding: 36px 32px; max-width: 400px; width: 90%; text-align: center; position: relative; box-shadow: 0 20px 60px rgba(0,0,0,.2); }
.exit-popup-close { position: absolute; top: 12px; right: 16px; background: none; border: none; font-size: 20px; color: var(--gray-400); cursor: pointer; padding: 4px; }
.exit-popup-close:hover { color: var(--gray-900); }
.exit-popup-icon { font-size: 40px; margin-bottom: 12px; }
.exit-popup-content h3 { font-size: 22px; color: var(--dark); margin-bottom: 8px; }
.exit-popup-content p { font-size: 14px; color: var(--gray-700); margin-bottom: 4px; }
.exit-desc { font-size: 13px; color: var(--gray-500); margin-bottom: 20px !important; }
.exit-form input { width: 100%; padding: 10px 14px; border: 1px solid var(--gray-200); border-radius: 8px; font-size: 14px; margin-bottom: 10px; box-sizing: border-box; }
.exit-form input:focus { outline: none; border-color: var(--teal); box-shadow: 0 0 0 3px rgba(0,150,136,.1); }
.exit-note { font-size: 11px; color: var(--gray-400); margin-top: 12px !important; }

/* ===== PUE CALCULATOR ===== */
.calc-section { background: var(--gray-50); }
.calc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; max-width: 800px; margin: 0 auto; }
.calc-field { margin-bottom: 20px; }
.calc-field label { font-size: 13px; font-weight: 600; color: var(--gray-700); display: block; margin-bottom: 6px; }
.calc-field input[type=range] { width: 100%; accent-color: var(--teal); }
.calc-val { font-size: 14px; font-weight: 700; color: var(--teal); display: block; margin-top: 2px; }
.calc-result { text-align: center; background: var(--white); padding: 36px 24px; border-radius: var(--radius); box-shadow: var(--shadow-md); }
.calc-result-num { font-size: 42px; font-weight: 800; color: var(--teal); line-height: 1.1; }
.calc-result-label { font-size: 14px; color: var(--gray-700); margin-top: 8px; }
.calc-result-sub { font-size: 12px; color: var(--gray-400); margin-top: 4px; }
@media (max-width: 600px) { .calc-grid { grid-template-columns: 1fr; } }

/* ===== SCROLL ANIMATIONS ===== */
.section, .pain-card, .service-card, .case-card, .result-card, .tl-step { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.animate-in { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) { .section, .pain-card, .service-card, .case-card, .result-card, .tl-step { opacity: 1; transform: none; } }

/* === Feature Cards (liquid-cooling) === */
.feat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.feat-card { background: var(--white); border: 1px solid var(--gray-200); border-radius: 14px; padding: 28px 20px; transition: box-shadow .2s; }
.feat-card:hover { box-shadow: var(--shadow-md); }
.feat-card .icon { font-size: 28px; margin-bottom: 10px; display: block; }
.feat-card h3 { font-size: 15px; font-weight: 700; color: var(--blue-dark); margin-bottom: 8px; }
.feat-card p { font-size: 13px; color: var(--gray-500); line-height: 1.7; }

/* === CDU spec cards === */
.cdu-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 16px; }
.cdu-card { background: var(--white); border: 1px solid var(--gray-200); border-radius: 14px; padding: 20px; transition: box-shadow .2s; }
.cdu-card:hover { box-shadow: var(--shadow-sm); }
.cdu-card h4 { font-size: 16px; font-weight: 700; color: var(--blue-dark); margin-bottom: 12px; }
.cdu-card .param { font-size: 13px; color: var(--gray-500); line-height: 1.7; }
.cdu-card.border-teal { border-left: 3px solid var(--teal); }
.cdu-card.accent-red { border-left: 3px solid #e74c3c; }
.cdu-card.accent-orange { border-left: 3px solid #f08c2e; }

/* === Value proposition cards === */
.val-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.val-card { background: var(--white); border: 1px solid var(--gray-200); border-radius: 14px; padding: 24px; transition: box-shadow .2s; }
.val-card:hover { box-shadow: var(--shadow-sm); }
.val-card .icon { font-size: 28px; margin-bottom: 8px; display: block; }
.val-card h3 { font-size: 15px; font-weight: 700; color: var(--blue-dark); margin-bottom: 8px; }
.val-card p { font-size: 13px; color: var(--gray-500); line-height: 1.7; }

/* === Spec comparison table === */
.spec-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.spec-table th { background: #f7f9fc; font-weight: 600; color: var(--blue-dark); font-size: 10px; text-transform: uppercase; letter-spacing: .5px; padding: 10px 14px; border-bottom: 1px solid var(--gray-100); text-align: left; }
.spec-table td { padding: 10px 14px; border-bottom: 1px solid var(--gray-100); color: var(--gray-700); }
.spec-table .col-highlight { background: var(--teal); color: var(--white); }
.spec-table .cell-highlight { background: rgba(0,150,136,.05); font-weight: 600; }
.table-wrap { overflow-x: auto; }

/* === Process flow metric === */
.value-metric { text-align: center; flex: 1; min-width: 80px; }
.value-metric .val-label { font-size: 12px; font-weight: 600; color: var(--blue-dark); margin-top: 6px; }
.value-metric .val-sub { font-size: 11px; color: var(--gray-400); }

/* === Highlight dark background section === */
.highlight-bg { background: linear-gradient(135deg, #1a3a5c, #2c5f8a); color: var(--white); }

/* === Section dark variant === */
.section-dark { background: linear-gradient(135deg, #1a3a5c, #2c5f8a); color: var(--white); padding: 60px 0; text-align: center; }
.section-dark h2 { color: var(--white); }
.section-dark p { color: rgba(255,255,255,.7); }

/* === Case showcase card === */
.case-showcase { background: var(--white); border: 1px solid var(--gray-200); border-radius: var(--radius); overflow: hidden; transition: transform .25s, box-shadow .25s; }
.case-showcase:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.case-showcase .case-img { height: 140px; display: flex; align-items: center; justify-content: center; color: var(--white); font-size: 13px; font-weight: 600; }
.case-showcase .case-body-inner { padding: 18px; }

/* === Process flow bar === */
.flow-bar { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.flow-arrow { font-size: 20px; color: var(--teal); flex-shrink: 0; }

/* === Pain point cards (3-col) === */
.pain-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }

/* === Highlight stat row === */
.stat-row { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; }

/* === Cooling plan text === */
.cooling-note { text-align: center; font-size: 12px; color: var(--gray-400); margin-top: 12px; }

/* === Responsive === */
@media (max-width: 900px) {
  .feat-grid, .val-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-row { grid-template-columns: repeat(3, 1fr); }
  .pain-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .feat-grid, .val-grid, .cdu-grid, .pain-grid { grid-template-columns: 1fr; }
  .stat-row { grid-template-columns: repeat(2, 1fr); }
  .flow-bar { justify-content: center; }
}

/* === Mobile Optimization (2026-07-19) === */
input, textarea, select { font-size: 16px; }
.btn, button[type="submit"], a.btn, .nav-links a { min-height: 44px; display: inline-flex; align-items: center; justify-content: center; }
@media (max-width: 600px) {
  .container, section { padding-left: 16px; padding-right: 16px; }
  h1 { font-size: 1.6rem !important; }
  h2 { font-size: 1.3rem !important; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  table { display: block; overflow-x: auto; }
}