/* LINXIN B2B site — main stylesheet */
:root {
  --orange: #ff6a13;
  --orange-d: #e65c0a;
  --dark: #17222e;
  --dark-2: #223242;
  --text: #24313d;
  --muted: #67788a;
  --line: #e4e9ee;
  --bg: #ffffff;
  --bg-muted: #f4f6f9;
  --wa: #25d366;
  --ok: #1d9e56;
  --radius: 12px;
  --shadow: 0 6px 24px rgba(23, 34, 46, .08);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font: 16px/1.6 "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--orange-d); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { line-height: 1.25; color: var(--dark); margin: 0 0 .5em; }
h1 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
h2 { font-size: clamp(1.3rem, 2.6vw, 1.7rem); }
h3 { font-size: 1.05rem; }
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* buttons */
.btn {
  display: inline-block; padding: 12px 22px; border-radius: 10px; border: 2px solid transparent;
  font-weight: 600; font-size: .95rem; cursor: pointer; text-align: center; transition: .15s;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: var(--orange); color: #fff; }
.btn-primary:hover { background: var(--orange-d); color: #fff; }
.btn-ghost { border-color: var(--line); color: var(--dark); background: #fff; }
.btn-ghost:hover { border-color: var(--orange); color: var(--orange-d); }
.btn-wa { background: var(--wa); color: #fff; }
.btn-wa:hover { background: #1fb457; color: #fff; }
.btn-light { background: #fff; color: var(--dark); }
.btn-sm { padding: 8px 14px; font-size: .85rem; }
.btn-block { display: block; width: 100%; }

/* topbar */
.topbar { background: var(--dark); color: #cfd9e2; font-size: .85rem; }
.topbar-in { display: flex; justify-content: space-between; align-items: center; min-height: 38px; gap: 12px; }
.topbar-left { display: flex; align-items: center; gap: 14px; }
.topbar-phone { color: #fff; font-weight: 600; }
.topbar-note { color: #8fa1b3; }
.langs { display: flex; gap: 4px; }
.lang-link { color: #cfd9e2; padding: 3px 9px; border-radius: 6px; }
.lang-link:hover { color: #fff; text-decoration: none; }
.lang-link.is-active { background: var(--orange); color: #fff; }

/* header */
.header { background: #fff; border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 50; }
.header-in { display: flex; align-items: center; gap: 22px; min-height: 72px; }
.logo { display: flex; align-items: center; gap: 10px; }
.logo img { height: 40px; width: auto; }
.logo-text { font-weight: 800; font-size: 1.35rem; color: var(--dark); letter-spacing: .06em; }
.nav { display: flex; gap: 22px; margin-left: auto; }
.nav a { color: var(--dark); font-weight: 600; padding: 8px 2px; }
.nav a:hover { color: var(--orange-d); text-decoration: none; }
.header-cta { display: flex; gap: 8px; }
.burger { display: none; margin-left: auto; background: none; border: 0; cursor: pointer; padding: 8px; }
.burger span { display: block; width: 24px; height: 3px; background: var(--dark); margin: 4px 0; border-radius: 2px; }

/* hero */
.hero {
  background: linear-gradient(115deg, var(--dark) 0%, #2b3f54 55%, #45586d 100%);
  color: #fff; position: relative; overflow: hidden;
}
.hero::after {
  content: ""; position: absolute; right: -80px; top: -80px; width: 420px; height: 420px;
  background: radial-gradient(circle, rgba(255, 106, 19, .35), transparent 65%);
}
.hero-in { padding: 72px 20px; position: relative; z-index: 1; }
.hero-text { max-width: 720px; }
.hero h1 { color: #fff; font-size: clamp(1.9rem, 4.4vw, 3rem); }
.hero-sub { color: #d7e0e9; font-size: 1.08rem; }
.hero-actions { display: flex; gap: 12px; margin: 26px 0 34px; flex-wrap: wrap; }
.hero-stats { list-style: none; display: flex; gap: 38px; padding: 0; margin: 0; flex-wrap: wrap; }
.hero-stats li { display: flex; flex-direction: column; }
.hero-stats strong { font-size: 1.5rem; color: var(--orange); }
.hero-stats span { color: #b9c6d2; font-size: .85rem; }

/* sections */
.section { padding: 54px 0; }
.section-muted { background: var(--bg-muted); }
.section-accent { background: linear-gradient(180deg, #fff6ef, #fff); }
.section h2 { margin-bottom: 10px; }
.section-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 16px; margin-bottom: 26px; flex-wrap: wrap; }
.section-sub { color: var(--muted); margin: 0; }
.link-more { font-weight: 600; white-space: nowrap; }
.seo-text { color: var(--muted); max-width: 900px; }
.lead { font-size: 1.08rem; }

/* grid + cards */
.grid { display: grid; gap: 20px; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; display: flex; flex-direction: column; transition: .18s;
}
.card:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.card-featured { border-color: #ffd9bf; background: linear-gradient(180deg, #fffaf6, #fff); }
.card-img { position: relative; display: block; background: #fff; }
.card-img img { width: 100%; aspect-ratio: 1; object-fit: contain; padding: 12px; }
.badge {
  position: absolute; top: 10px; left: 10px; background: var(--orange); color: #fff;
  font-size: .72rem; font-weight: 700; padding: 4px 10px; border-radius: 20px; letter-spacing: .02em;
}
.product-badges .badge { position: static; }
.card-body { padding: 14px 16px 16px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.card-body h3 { margin: 0; }
.card-body h3 a { color: var(--dark); }
.card-meta { display: flex; justify-content: space-between; align-items: center; color: var(--muted); font-size: .85rem; gap: 8px; }
.card-views { white-space: nowrap; }
.card-more { margin-top: auto; font-weight: 600; font-size: .9rem; }

/* categories */
.cats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.cat {
  display: flex; align-items: center; gap: 12px; background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); padding: 14px 16px; color: var(--dark); transition: .15s;
}
.cat:hover { border-color: var(--orange); text-decoration: none; box-shadow: var(--shadow); }
.cat.is-active { border-color: var(--orange); background: #fff6ef; }
.cat-icon { font-size: 1.5rem; }
.cat-name { font-weight: 600; flex: 1; }
.cat-n { color: var(--muted); font-size: .85rem; background: var(--bg-muted); border-radius: 14px; padding: 2px 10px; }
.cats-filters { margin-bottom: 18px; }

/* why */
.why-item { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.why-num { color: var(--orange); font-weight: 800; font-size: 1.1rem; margin-bottom: 8px; }
.why-item p { color: var(--muted); margin: 0; }

/* CTA */
.section-cta { background: linear-gradient(115deg, var(--orange), #ff9046); color: #fff; }
.section-cta h2 { color: #fff; }
.cta-in { display: flex; justify-content: space-between; align-items: center; gap: 26px; flex-wrap: wrap; }
.cta-phone { color: #fff; font-weight: 800; font-size: 1.3rem; }
.cta-note { color: #ffe4d1; margin: 6px 0 0; }
.cta-actions { display: flex; gap: 10px; flex-wrap: wrap; }

/* page head */
.pagehead { background: var(--bg-muted); border-bottom: 1px solid var(--line); padding: 26px 0; }
.pagehead h1 { margin-bottom: 6px; }
.pagehead-sub { color: var(--muted); margin: 0; }
.crumbs { font-size: .85rem; color: var(--muted); margin-bottom: 10px; display: flex; gap: 8px; flex-wrap: wrap; }
.crumbs a { color: var(--muted); }
.crumbs b { color: var(--text); font-weight: 600; }

/* search */
.search { display: flex; gap: 10px; max-width: 560px; margin-top: 14px; }
.search input[type="search"] {
  flex: 1; padding: 11px 16px; border: 1px solid var(--line); border-radius: 10px; font-size: 1rem;
}
.search input[type="search"]:focus { outline: 2px solid var(--orange); border-color: transparent; }
.found { color: var(--muted); margin: 0 0 16px; }
.empty { background: #fff; border: 1px dashed var(--line); border-radius: var(--radius); padding: 30px; text-align: center; color: var(--muted); }

/* pager */
.pager { display: flex; align-items: center; gap: 16px; justify-content: center; margin-top: 30px; }
.pager-info { color: var(--muted); }

/* product page */
.product-wrap { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 36px; }
.gallery-main { border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
.gallery-main img { width: 100%; aspect-ratio: 1; object-fit: contain; }
.gallery-thumbs { display: flex; gap: 8px; margin-top: 10px; flex-wrap: wrap; }
.gthumb { border: 2px solid var(--line); background: #fff; border-radius: 8px; padding: 0; cursor: pointer; overflow: hidden; }
.gthumb img { width: 72px; height: 72px; object-fit: contain; }
.gthumb.is-active { border-color: var(--orange); }
.product-info h1 { font-size: clamp(1.4rem, 2.6vw, 1.9rem); }
.product-badges { display: flex; gap: 10px; align-items: center; margin: 10px 0 18px; flex-wrap: wrap; }
.price-tag { background: var(--dark); color: #fff; border-radius: 8px; padding: 6px 14px; font-weight: 700; }
.views-tag { color: var(--muted); font-size: .9rem; }
.product-actions { display: flex; gap: 10px; margin: 18px 0 8px; flex-wrap: wrap; }
.product-note { color: var(--muted); font-size: .9rem; }
.product-meta-line { display: flex; gap: 24px; color: var(--muted); font-size: .95rem; margin-top: 14px; flex-wrap: wrap; }
.product-desc-grid { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: 36px; align-items: start; }

/* specs tables */
.specs { width: 100%; border-collapse: collapse; background: #fff; border-radius: var(--radius); overflow: hidden; }
.specs th, .specs td { padding: 10px 14px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.specs tr:last-child th, .specs tr:last-child td { border-bottom: 0; }
.specs th { width: 42%; color: var(--muted); font-weight: 600; background: var(--bg-muted); }
.specs-short { margin-top: 6px; }
.specs-full { border: 1px solid var(--line); }

/* contacts */
.contacts-grid { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 30px; align-items: start; }
.contact-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.ccard { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; }
.ccard-manager { grid-column: 1 / -1; background: linear-gradient(115deg, #fff6ef, #fff); border-color: #ffd9bf; }
.ccard-label { color: var(--muted); font-size: .82rem; text-transform: uppercase; letter-spacing: .05em; margin-bottom: 6px; }
.cc-manager { font-size: 1.35rem; font-weight: 800; color: var(--dark); }
.ccard-value a { font-weight: 700; font-size: 1.1rem; }
.cc-small { font-weight: 400; font-size: .95rem; color: var(--text); }
.ccard-actions { display: flex; gap: 10px; margin-top: 12px; flex-wrap: wrap; }

/* inquiry form */
.notice-bulk {
  background: #fff6ef; border: 1px solid #ffd9bf; border-radius: 10px;
  padding: 12px 16px; margin-bottom: 16px; font-size: .92rem;
}
.notice-bulk strong { display: block; color: var(--orange-d); margin-bottom: 4px; }
.notice-bulk p { margin: 0; color: var(--text); }
.inquiry-box { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 24px; box-shadow: var(--shadow); }
.inquiry-box h3 { margin-bottom: 4px; }
.inquiry-about { color: var(--muted); font-size: .9rem; margin-top: 0; }
.iform label { display: block; font-size: .9rem; font-weight: 600; color: var(--dark); margin-bottom: 12px; }
.iform label.consent { display: flex; gap: 8px; align-items: flex-start; font-weight: 400; font-size: .82rem; color: var(--muted); }
.iform label.consent input { width: auto; margin-top: 3px; }
.iform label.consent a { color: var(--orange-d); text-decoration: underline; }

/* privacy page */
.privacy { max-width: 860px; }
.privacy p { color: var(--text); }
.privacy h2 { margin-top: 26px; }
.privacy-contact { background: #fff6ef; border: 1px solid #ffd9bf; border-radius: var(--radius); padding: 16px 20px; margin-top: 22px; }
.privacy-contact p { margin: 4px 0; }
.iform input, .iform textarea {
  display: block; width: 100%; margin-top: 5px; padding: 10px 14px; font: inherit;
  border: 1px solid var(--line); border-radius: 8px; background: var(--bg-muted);
}
.iform input:focus, .iform textarea:focus { outline: 2px solid var(--orange); background: #fff; border-color: transparent; }
.iform-note { color: var(--muted); font-size: .8rem; margin: 10px 0 0; }
.hp { position: absolute; left: -9999px; opacity: 0; height: 0; overflow: hidden; }
.flash { padding: 12px 18px; border-radius: 10px; font-weight: 600; }
.flash-ok { background: #e5f7ec; color: var(--ok); border: 1px solid #bce8cd; }
.flash-inline { margin-bottom: 12px; }
.flash-wrap { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); z-index: 90; width: min(92vw, 480px); }
.flash-wrap .flash { box-shadow: var(--shadow); animation: fadeout 1s ease 5s forwards; }
@keyframes fadeout { to { opacity: 0; visibility: hidden; } }

/* about */
.about-grid { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: 34px; align-items: start; }
.about-stats { background: var(--dark); color: #fff; border-radius: var(--radius); padding: 24px; }
.about-stats h2 { color: #fff; font-size: 1.15rem; }
.stat { display: flex; align-items: baseline; gap: 12px; padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,.12); }
.stat:last-child { border-bottom: 0; }
.stat strong { color: var(--orange); font-size: 1.4rem; min-width: 74px; }
.stat span { color: #c4d0db; font-size: .92rem; }
.about-actions { display: flex; gap: 10px; margin-top: 20px; flex-wrap: wrap; }

/* 404 */
.p404 { text-align: center; padding: 40px 20px 80px; }
.p404-code { font-size: 5rem; font-weight: 800; color: var(--orange); line-height: 1; }
.p404-actions { display: flex; gap: 10px; justify-content: center; margin-top: 20px; flex-wrap: wrap; }

/* float whatsapp */
.wa-float {
  position: fixed; right: 22px; bottom: 22px; z-index: 80; width: 58px; height: 58px;
  background: var(--wa); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center;
  box-shadow: 0 8px 24px rgba(37, 211, 102, .45); transition: .15s;
}
.wa-float:hover { transform: scale(1.07); }

/* footer */
.footer { background: var(--dark); color: #b9c6d2; margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 30px; padding: 44px 20px 30px; }
.footer-col h4 { color: #fff; margin-bottom: 12px; font-size: .95rem; }
.footer-col a { display: block; color: #b9c6d2; padding: 3px 0; font-size: .93rem; }
.footer-col a:hover { color: #fff; }
.footer-phone { font-weight: 700; font-size: 1.05rem !important; color: #fff !important; }
.footer-wechat { display: block; color: #b9c6d2; padding: 3px 0; font-size: .93rem; }
.footer-note { font-size: .85rem; color: #8fa1b3; }
.logo-foot img { height: 32px; }
.logo-foot span { font-weight: 800; font-size: 1.2rem; color: #fff; letter-spacing: .06em; }
.footer-about p { font-size: .92rem; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding: 16px 20px; font-size: .85rem; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; }

/* responsive */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(3, 1fr); }
  .cats { grid-template-columns: repeat(3, 1fr); }
  .product-wrap { grid-template-columns: 1fr; }
  .product-desc-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
  .nav {
    display: none; position: absolute; top: 100%; left: 0; right: 0; background: #fff;
    flex-direction: column; gap: 0; border-bottom: 1px solid var(--line); box-shadow: var(--shadow); margin-left: 0;
  }
  .nav.open { display: flex; }
  .nav a { padding: 14px 20px; border-top: 1px solid var(--line); }
  .burger { display: block; }
  .header { position: sticky; }
  .header-in { flex-wrap: wrap; }
  .header-cta { display: none; }
  .topbar-note { display: none; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .cats { grid-template-columns: repeat(2, 1fr); }
  .contacts-grid { grid-template-columns: 1fr; }
  .contact-cards { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .hero-in { padding: 44px 20px; }
  .hero-stats { gap: 22px; }
  .section { padding: 38px 0; }
  .footer-grid { grid-template-columns: 1fr; gap: 20px; }
}
@media (max-width: 460px) {
  .grid-4 { grid-template-columns: 1fr; }
  .cats { grid-template-columns: 1fr; }
  .search { flex-direction: column; }
}