/* ===== ChenXin Export Site Styles ===== */
:root {
  --blue-rgb: 37, 99, 235;
  --navy: #0b1f3a;
  --navy2: #122c52;
  --blue: #2563eb;
  --blue2: #1d4ed8;
  --sky: #38bdf8;
  --bg: #f5f7fb;
  --card: #ffffff;
  --text: #1e293b;
  --muted: #64748b;
  --border: #e2e8f0;
  --green: #16a34a;
  --red: #dc2626;
  --amber: #d97706;
  --radius: 14px;
  --shadow: 0 1px 3px rgba(15, 23, 42, .08), 0 8px 24px rgba(15, 23, 42, .06);
  --shadow-lg: 0 10px 30px rgba(15, 23, 42, .14);
}

/* ===== Theme presets (switch in admin > Site Settings) ===== */
:root[data-theme="emerald"] { --navy:#022c22; --navy2:#065f46; --blue:#059669; --blue2:#047857; --sky:#34d399; --blue-rgb:5,150,105; }
:root[data-theme="violet"] { --navy:#1e1b4b; --navy2:#3730a3; --blue:#7c3aed; --blue2:#6d28d9; --sky:#a78bfa; --blue-rgb:124,58,237; }
:root[data-theme="orange"] { --navy:#431407; --navy2:#7c2d12; --blue:#ea580c; --blue2:#c2410c; --sky:#fb923c; --blue-rgb:234,88,12; }
:root[data-theme="red"] { --navy:#450a0a; --navy2:#7f1d1d; --blue:#dc2626; --blue2:#b91c1c; --sky:#f87171; --blue-rgb:220,38,38; }

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, 'Helvetica Neue', Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: none; }
.container { max-width: 1180px; margin: 0 auto; padding: 0 20px; }
h1, h2, h3, h4 { line-height: 1.25; font-weight: 700; }

/* ===== Top bar ===== */
.topbar { background: var(--navy); color: #cbd5e1; font-size: 13px; }
.topbar .container { display: flex; justify-content: space-between; align-items: center; min-height: 34px; gap: 12px; flex-wrap: wrap; }
.topbar a { color: #cbd5e1; }
.topbar a:hover { color: #fff; }
.topbar .tb-right { display: flex; gap: 16px; align-items: center; }
.tb-wa { display: none; align-items: center; gap: 6px; color: #86efac !important; }

/* ===== Header ===== */
.site-header { position: sticky; top: 0; z-index: 50; background: #fff; border-bottom: 1px solid var(--border); }
.site-header .container { display: flex; align-items: center; justify-content: space-between; min-height: 68px; gap: 16px; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 800; color: var(--navy); letter-spacing: -.3px; }
.logo .logo-badge { width: 38px; height: 38px; border-radius: 10px; background: linear-gradient(135deg, var(--blue), var(--sky)); display: flex; align-items: center; justify-content: center; color: #fff; font-size: 18px; }
.nav { display: flex; gap: 4px; align-items: center; }
.nav a { padding: 8px 14px; border-radius: 8px; color: var(--text); font-weight: 600; font-size: 15px; }
.nav a:hover { background: color-mix(in srgb, var(--blue) 10%, #fff); color: var(--blue); }
.nav a.active { background: color-mix(in srgb, var(--blue) 10%, #fff); color: var(--blue); }
.nav .btn-nav { background: var(--blue); color: #fff !important; }
.nav .btn-nav:hover { background: var(--blue2); }
.nav-toggle { display: none; background: none; border: 1px solid var(--border); border-radius: 8px; padding: 8px 10px; cursor: pointer; }
.nav-toggle svg { width: 22px; height: 22px; }

/* ===== Buttons ===== */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 11px 22px; border-radius: 10px; font-weight: 600; font-size: 15px; border: 1px solid transparent; cursor: pointer; transition: all .15s ease; }
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: var(--blue2); transform: translateY(-1px); box-shadow: 0 8px 18px rgba(var(--blue-rgb), .3); }
.btn-outline { background: transparent; color: var(--blue); border-color: color-mix(in srgb, var(--blue) 45%, #fff); }
.btn-outline:hover { background: color-mix(in srgb, var(--blue) 10%, #fff); }
.btn-light { background: #fff; color: var(--navy); }
.btn-light:hover { background: #e2e8f0; }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--border); }
.btn-ghost:hover { background: #f1f5f9; }
.btn-danger { background: #fee2e2; color: var(--red); }
.btn-danger:hover { background: #fecaca; }
.btn-sm { padding: 7px 14px; font-size: 13px; border-radius: 8px; }
.btn-block { width: 100%; }

/* ===== Hero ===== */
.hero { background: linear-gradient(120deg, var(--navy) 0%, var(--navy2) 55%, var(--blue) 100%); color: #fff; padding: 84px 0 96px; position: relative; overflow: hidden; }
.hero::after { content: ''; position: absolute; right: -120px; top: -120px; width: 420px; height: 420px; border-radius: 50%; background: radial-gradient(circle, rgba(56, 189, 248, .25), transparent 70%); }
.hero .container { position: relative; z-index: 1; display: grid; grid-template-columns: 1.15fr .85fr; gap: 40px; align-items: center; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.22); padding: 6px 14px; border-radius: 999px; font-size: 13px; color: color-mix(in srgb, var(--sky) 70%, #fff); margin-bottom: 18px; }
.hero h1 { font-size: clamp(30px, 4.4vw, 48px); font-weight: 800; letter-spacing: -.5px; margin-bottom: 16px; }
.hero h1 span { color: var(--sky); }
.hero p.lead { font-size: 17px; color: #cbd5e1; max-width: 560px; margin-bottom: 28px; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 34px; }
.hero-stats { display: flex; gap: 32px; flex-wrap: wrap; border-top: 1px solid rgba(255,255,255,.16); padding-top: 22px; }
.hero-stats .hs b { font-size: 26px; display: block; color: #fff; }
.hero-stats .hs span { font-size: 13px; color: #94a3b8; }
.hero-visual { display: flex; justify-content: center; }
.hero-card { background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.16); border-radius: 18px; padding: 26px; backdrop-filter: blur(6px); width: 100%; max-width: 380px; }
.hero-card .hc-title { font-size: 15px; color: color-mix(in srgb, var(--sky) 70%, #fff); margin-bottom: 14px; }
.hero-card .hc-row { display: flex; justify-content: space-between; padding: 9px 0; border-bottom: 1px dashed rgba(255,255,255,.14); font-size: 14px; }
.hero-card .hc-row span { color: #94a3b8; }
.hero-card .hc-row b { color: #fff; font-weight: 600; }

/* ===== Sections ===== */
.section { padding: 72px 0; }
.section.alt { background: #fff; }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 40px; }
.section-head .eyebrow { color: var(--blue); font-weight: 700; font-size: 13px; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 8px; }
.section-head h2 { font-size: clamp(24px, 3vw, 34px); color: var(--navy); margin-bottom: 10px; }
.section-head p { color: var(--muted); font-size: 15.5px; }

/* ===== Category chips / grid ===== */
.cat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.cat-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; text-align: center; transition: all .18s ease; }
.cat-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); border-color: color-mix(in srgb, var(--blue) 45%, #fff); }
.cat-card .cat-icon { width: 52px; height: 52px; margin: 0 auto 12px; border-radius: 14px; background: color-mix(in srgb, var(--blue) 10%, #fff); color: var(--blue); display: flex; align-items: center; justify-content: center; font-size: 24px; }
.cat-card h3 { font-size: 16px; margin-bottom: 4px; color: var(--navy); }
.cat-card p { font-size: 13px; color: var(--muted); }

/* ===== Product grid & cards ===== */
.pgrid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.pgrid.cols3 { grid-template-columns: repeat(3, 1fr); }
.pcard { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column; transition: all .18s ease; }
.pcard:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: color-mix(in srgb, var(--blue) 45%, #fff); }
.pcard-img { aspect-ratio: 4/3; background: #f1f5f9; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.pcard-img img { width: 100%; height: 100%; object-fit: cover; }
.pcard-img .noimg { font-size: 44px; font-weight: 800; color: #cbd5e1; }
.pcard-body { padding: 16px 16px 18px; display: flex; flex-direction: column; flex: 1; }
.pcard-cat { font-size: 12px; color: var(--blue); font-weight: 700; text-transform: uppercase; letter-spacing: .5px; margin-bottom: 5px; }
.pcard-name { font-size: 15.5px; font-weight: 700; color: var(--navy); margin-bottom: 6px; line-height: 1.35; }
.pcard-desc { font-size: 13px; color: var(--muted); flex: 1; margin-bottom: 12px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.pcard-foot { display: flex; justify-content: space-between; align-items: baseline; border-top: 1px solid var(--border); padding-top: 12px; }
.pcard-price { font-size: 18px; font-weight: 800; color: var(--blue); }
.pcard-moq { font-size: 12.5px; color: var(--muted); }

/* ===== Product page ===== */
.breadcrumb { font-size: 13.5px; color: var(--muted); padding: 18px 0 4px; }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--blue); }
.pd-layout { display: grid; grid-template-columns: 1fr 1.1fr; gap: 40px; padding: 28px 0 60px; }
.pd-gallery .main-img { border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; background: #fff; aspect-ratio: 1/1; display: flex; align-items: center; justify-content: center; margin-bottom: 12px; }
.pd-gallery .main-img img { width: 100%; height: 100%; object-fit: contain; }
.pd-thumbs { display: flex; gap: 10px; flex-wrap: wrap; }
.pd-thumbs img { width: 74px; height: 74px; object-fit: cover; border: 2px solid var(--border); border-radius: 10px; cursor: pointer; }
.pd-thumbs img.active { border-color: var(--blue); }
.pd-info h1 { font-size: clamp(24px, 3vw, 32px); color: var(--navy); margin-bottom: 8px; }
.pd-cat { color: var(--blue); font-weight: 600; font-size: 14px; margin-bottom: 12px; }
.pd-price-row { display: flex; align-items: baseline; gap: 16px; margin: 14px 0 6px; }
.pd-price { font-size: 32px; font-weight: 800; color: var(--blue); }
.pd-price-note { color: var(--muted); font-size: 13.5px; }
.pd-meta { display: flex; gap: 10px; flex-wrap: wrap; margin: 14px 0 18px; }
.pd-meta .tag { background: color-mix(in srgb, var(--blue) 10%, #fff); color: var(--blue2); border: 1px solid #bfdbfe; border-radius: 999px; padding: 5px 13px; font-size: 13px; font-weight: 600; }
.pd-short { color: var(--muted); font-size: 15px; margin-bottom: 20px; }
.pd-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 22px; }
.pd-features { list-style: none; margin: 6px 0 0; }
.pd-features li { padding: 5px 0 5px 26px; position: relative; color: var(--text); font-size: 14.5px; }
.pd-features li::before { content: '\2713'; position: absolute; left: 2px; color: var(--green); font-weight: 700; }
.pd-detail-section { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; margin-bottom: 24px; }
.pd-detail-section h2 { font-size: 19px; color: var(--navy); margin-bottom: 14px; }
.spec-table { width: 100%; border-collapse: collapse; font-size: 14.5px; }
.spec-table th, .spec-table td { text-align: left; padding: 11px 14px; border-bottom: 1px solid var(--border); }
.spec-table th { width: 34%; color: var(--muted); font-weight: 600; background: #f8fafc; }
.spec-table tr:last-child th, .spec-table tr:last-child td { border-bottom: none; }
.pd-desc { white-space: pre-line; color: #334155; font-size: 15px; }
.inquiry-box { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; }
.inquiry-box h2 { font-size: 19px; color: var(--navy); margin-bottom: 6px; }
.inquiry-box .sub { color: var(--muted); font-size: 13.5px; margin-bottom: 18px; }

/* ===== Forms ===== */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; }
.form-group label { font-size: 13.5px; font-weight: 600; color: var(--navy); }
.form-group label .req { color: var(--red); }
.form-group input, .form-group select, .form-group textarea {
  padding: 11px 13px; border: 1px solid var(--border); border-radius: 10px; font-size: 14.5px;
  font-family: inherit; background: #fff; color: var(--text); width: 100%; outline: none; transition: border .15s;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(37,99,235,.12); }
.form-group textarea { resize: vertical; min-height: 110px; }
.form-group.full { grid-column: 1 / -1; }
.form-note { font-size: 12.5px; color: var(--muted); }
.hp-field { position: absolute; left: -9999px; opacity: 0; height: 0; overflow: hidden; }

/* ===== Why us ===== */
.why-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.why-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; }
.why-card .w-icon { width: 46px; height: 46px; border-radius: 12px; background: color-mix(in srgb, var(--blue) 10%, #fff); color: var(--blue); display: flex; align-items: center; justify-content: center; font-size: 21px; margin-bottom: 14px; }
.why-card h3 { font-size: 15.5px; color: var(--navy); margin-bottom: 6px; }
.why-card p { font-size: 13.5px; color: var(--muted); }

/* ===== CTA band ===== */
.cta-band { background: linear-gradient(120deg, var(--blue), var(--navy2)); color: #fff; padding: 56px 0; text-align: center; }
.cta-band h2 { font-size: clamp(22px, 3vw, 30px); margin-bottom: 10px; }
.cta-band p { color: #dbeafe; margin-bottom: 22px; }

/* ===== About page ===== */
.about-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 40px; align-items: start; }
.about-text { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 30px; }
.about-text h2 { color: var(--navy); font-size: 20px; margin: 18px 0 10px; }
.about-text p { color: #475569; margin-bottom: 10px; }
.contact-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; }
.contact-card h2 { font-size: 18px; color: var(--navy); margin-bottom: 16px; }
.contact-row { display: flex; gap: 12px; align-items: flex-start; padding: 11px 0; border-bottom: 1px solid var(--border); font-size: 14.5px; }
.contact-row:last-child { border-bottom: none; }
.contact-row .c-ico { width: 36px; height: 36px; flex: 0 0 36px; border-radius: 10px; background: color-mix(in srgb, var(--blue) 10%, #fff); color: var(--blue); display: flex; align-items: center; justify-content: center; }
.contact-row b { display: block; font-size: 12.5px; color: var(--muted); font-weight: 600; }
.contact-row span, .contact-row a { color: var(--text); }

/* ===== Page hero (inner) ===== */
.page-hero { background: linear-gradient(120deg, var(--navy), var(--navy2)); color: #fff; padding: 52px 0 54px; }
.page-hero h1 { font-size: clamp(26px, 3.4vw, 38px); margin-bottom: 8px; }
.page-hero p { color: #cbd5e1; max-width: 640px; }

/* ===== Products page ===== */
.filter-bar { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 18px 20px; margin: -26px 0 28px; position: relative; z-index: 5; box-shadow: var(--shadow); display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }
.filter-bar input { flex: 1; min-width: 200px; padding: 10px 13px; border: 1px solid var(--border); border-radius: 9px; font-size: 14px; outline: none; }
.filter-bar input:focus { border-color: var(--blue); }
.chips { display: flex; gap: 8px; flex-wrap: wrap; }
.chip { padding: 8px 15px; border-radius: 999px; border: 1px solid var(--border); background: #fff; font-size: 13.5px; font-weight: 600; color: var(--text); cursor: pointer; transition: all .15s; }
.chip:hover { border-color: var(--blue); color: var(--blue); }
.chip.active { background: var(--blue); border-color: var(--blue); color: #fff; }
.result-bar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 18px; color: var(--muted); font-size: 14px; }
.empty-state { text-align: center; padding: 70px 20px; color: var(--muted); }
.empty-state .big { font-size: 44px; margin-bottom: 12px; }

/* ===== Footer ===== */
.site-footer { background: var(--navy); color: #94a3b8; padding: 52px 0 0; font-size: 14px; }
.site-footer .f-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 32px; padding-bottom: 36px; }
.site-footer h4 { color: #fff; font-size: 15px; margin-bottom: 14px; }
.site-footer a { color: #94a3b8; display: block; padding: 4px 0; }
.site-footer a:hover { color: #fff; }
.site-footer .f-about { color: #94a3b8; margin-top: 10px; line-height: 1.7; }
.f-bottom { border-top: 1px solid rgba(255,255,255,.1); padding: 18px 0; text-align: center; font-size: 13px; }

/* ===== Toast ===== */
#toast { position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%) translateY(20px); background: var(--navy); color: #fff; padding: 13px 22px; border-radius: 10px; font-size: 14px; opacity: 0; pointer-events: none; transition: all .25s; z-index: 999; box-shadow: var(--shadow-lg); max-width: 90vw; }
#toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
#toast.ok { background: var(--green); }
#toast.err { background: var(--red); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .pgrid, .cat-grid, .why-grid { grid-template-columns: repeat(3, 1fr); }
  .pgrid.cols3 { grid-template-columns: repeat(2, 1fr); }
  .hero .container { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
  .about-grid { grid-template-columns: 1fr; }
}
@media (max-width: 820px) {
  .nav { display: none; position: absolute; top: 68px; left: 0; right: 0; background: #fff; border-bottom: 1px solid var(--border); flex-direction: column; padding: 14px 20px 20px; gap: 6px; box-shadow: var(--shadow-lg); }
  .nav.open { display: flex; }
  .nav a { width: 100%; padding: 12px 14px; }
  .nav-toggle { display: block; }
  .pgrid, .cat-grid, .why-grid { grid-template-columns: repeat(2, 1fr); }
  .pd-layout { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .site-footer .f-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .pgrid, .cat-grid, .why-grid { grid-template-columns: 1fr; }
  .site-footer .f-grid { grid-template-columns: 1fr; }
  .section { padding: 52px 0; }
  .hero { padding: 56px 0 64px; }
}

/* WhatsApp quick chat (product page) */
.btn-wa { background: #25d366; color: #fff; }
.btn-wa:hover { background: #1eb958; color: #fff; transform: translateY(-1px); box-shadow: 0 8px 18px rgba(37, 211, 102, .35); }
.wa-quick { display: flex; align-items: center; justify-content: space-between; gap: 14px; flex-wrap: wrap; background: #f0fdf4; border: 1px solid #bbf7d0; border-radius: 12px; padding: 14px 18px; margin-bottom: 18px; }
.wa-quick span { font-weight: 600; color: #166534; }

/* product card WhatsApp quick inquiry */
.pcard-wrap { display: flex; flex-direction: column; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; transition: all .18s ease; }
.pcard-wrap:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: color-mix(in srgb, var(--blue) 45%, #fff); }
.pcard-wrap .pcard { border: none; border-radius: 0; }
.pcard-wrap:hover .pcard { transform: none; box-shadow: none; border-color: transparent; }
.pcard-wa { display: flex; align-items: center; justify-content: center; gap: 6px; background: #25d366; color: #fff; font-size: 13.5px; font-weight: 700; padding: 11px 14px; text-decoration: none; transition: background .15s ease; }
.pcard-wa:hover { background: #1eb958; color: #fff; }