:root {
  --navy: #10241f;
  --green: #1f7a52;
  --green-d: #166140;
  --ink: #1a2220;
  --muted: #63706c;
  --line: #e2e8e5;
  --bg: #ffffff;
  --soft: #f4f7f5;
  --radius: 10px;
  --maxw: 1180px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Segoe UI", "Helvetica Neue", Arial, "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--green); text-decoration: none; }
a:hover { color: var(--green-d); }
h1, h2, h3, h4 { line-height: 1.25; margin: 0 0 .5em; font-weight: 700; }
h1 { font-size: clamp(28px, 4vw, 44px); }
h2 { font-size: clamp(22px, 3vw, 32px); }
h3 { font-size: 18px; }
p { margin: 0 0 1em; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
.muted { color: var(--muted); }
.accent { color: var(--green); }

/* header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: #fff; border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; height: 68px; }
.brand { display: flex; flex-direction: column; line-height: 1.1; }
.brand-mark { font-weight: 800; font-size: 22px; letter-spacing: .06em; color: var(--navy); }
.brand-sub { font-size: 11px; color: var(--muted); letter-spacing: .14em; text-transform: uppercase; }
.nav { display: flex; gap: 26px; }
.nav a { color: var(--ink); font-weight: 600; font-size: 15px; padding: 6px 0; border-bottom: 2px solid transparent; }
.nav a:hover, .nav a.active { color: var(--green); border-color: var(--green); }
.nav-toggle { display: none; background: none; border: 1px solid var(--line); border-radius: 6px; padding: 6px 12px; cursor: pointer; }

/* hero */
.hero { background: linear-gradient(180deg, var(--soft), #fff); border-bottom: 1px solid var(--line); }
.hero-inner { display: grid; grid-template-columns: 1.15fr .85fr; gap: 40px; padding: 64px 20px 56px; align-items: center; }
.badge {
  display: inline-block; background: #e8f3ed; color: var(--green-d);
  font-size: 13px; font-weight: 700; padding: 6px 14px; border-radius: 999px; margin-bottom: 16px;
}
.lead { font-size: 17px; color: #43504b; max-width: 56ch; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin: 24px 0 32px; }
.hero-facts { list-style: none; display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; padding: 0; margin: 0; }
.hero-facts li { border-left: 3px solid var(--green); padding-left: 12px; }
.hero-facts strong { display: block; font-size: 20px; color: var(--navy); }
.hero-facts span { font-size: 12.5px; color: var(--muted); }
.hero-img img { border-radius: var(--radius); box-shadow: 0 10px 30px rgba(16,36,31,.12); }

/* buttons */
.btn {
  display: inline-block; background: var(--green); color: #fff; font-weight: 700;
  padding: 13px 26px; border-radius: 8px; border: 1px solid var(--green); cursor: pointer; font-size: 15px;
}
.btn:hover { background: var(--green-d); color: #fff; }
.btn-ghost { background: #fff; color: var(--green); }
.btn-ghost:hover { background: #eef6f2; color: var(--green-d); }
.btn-light { background: #fff; color: var(--green-d); border-color: #fff; }
.btn-sm { padding: 9px 18px; font-size: 14px; }

/* sections */
.section { padding: 64px 0; }
.section.alt { background: var(--soft); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.sec-head { margin-bottom: 32px; }
.sec-head p { color: var(--muted); max-width: 62ch; }
.page-head { background: var(--soft); border-bottom: 1px solid var(--line); padding: 44px 0; }
.page-head p { color: var(--muted); max-width: 70ch; margin: 0; }

/* category cards */
.cat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; }
.cat-card {
  display: flex; gap: 16px; background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); padding: 14px; align-items: center; transition: .18s;
}
.cat-card:hover { border-color: var(--green); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(16,36,31,.08); }
.cat-card img { width: 92px; height: 92px; object-fit: cover; border-radius: 8px; flex: none; }
.cat-card h3 { margin-bottom: 2px; font-size: 16px; color: var(--navy); }
.cat-card p { font-size: 13.5px; color: var(--muted); margin: 0 0 6px; }
.cat-card .more { font-size: 13px; font-weight: 700; color: var(--green); }

/* why */
.why-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 22px; }
.why { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.why h3 { color: var(--navy); }
.why p { color: var(--muted); margin: 0; font-size: 14.5px; }

/* product grid */
.prod-block { margin-bottom: 56px; }
.prod-block:last-child { margin-bottom: 0; }
.p-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 20px; }
.p-card {
  display: block; background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; transition: .18s; color: inherit;
}
.p-card:hover { border-color: var(--green); transform: translateY(-3px); box-shadow: 0 10px 26px rgba(16,36,31,.10); }
.p-img { background: var(--soft); aspect-ratio: 4/3; overflow: hidden; }
.p-img img { width: 100%; height: 100%; object-fit: cover; }
.p-body { padding: 14px 16px 18px; }
.pc-code { display: inline-block; font-size: 11px; font-weight: 700; color: var(--green-d); background: #e8f3ed; padding: 2px 8px; border-radius: 4px; margin-bottom: 6px; }
.p-body h3 { font-size: 15px; margin: 0 0 6px; color: var(--navy); }
.p-spec { font-size: 13px; color: var(--muted); margin: 0; line-height: 1.5; }

/* about / contact */
.about-grid, .contact-grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: 40px; align-items: start; }
.facts { margin: 0 0 18px; padding-left: 20px; color: var(--muted); }
.facts li { margin-bottom: 4px; }
.side-card { background: var(--soft); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; }
.side-card h3 { color: var(--navy); }
.side-card dl { display: grid; grid-template-columns: auto 1fr; gap: 8px 16px; margin: 0 0 18px; font-size: 14px; }
.side-card dt { color: var(--muted); }
.side-card dd { margin: 0; font-weight: 600; }
.side-card hr { border: none; border-top: 1px solid var(--line); margin: 20px 0; }

.cform { display: grid; gap: 14px; }
.cform label { display: grid; gap: 6px; font-size: 14px; font-weight: 600; color: var(--navy); }
.cform input, .cform select, .cform textarea {
  font: inherit; font-weight: 400; padding: 11px 13px; border: 1px solid var(--line);
  border-radius: 8px; background: #fff; color: var(--ink);
}
.cform input:focus, .cform textarea:focus, .cform select:focus { outline: 2px solid #bfe0d1; border-color: var(--green); }
.cform .btn { justify-self: start; }
.form-note { font-size: 14px; margin: 0; min-height: 1.4em; color: var(--green-d); font-weight: 600; }

.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
.detail-img img { border-radius: var(--radius); border: 1px solid var(--line); }

/* cta */
.cta { background: var(--navy); color: #fff; padding: 60px 0; text-align: center; }
.cta h2 { color: #fff; }
.cta p { color: #b9c9c2; max-width: 60ch; margin: 0 auto 22px; }

/* footer */
.site-footer { background: var(--navy); color: #cfdcd6; padding: 52px 0 90px; }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 28px; }
.site-footer h4 { color: #fff; font-size: 15px; margin-bottom: 10px; }
.site-footer .brand-mark { color: #fff; margin-bottom: 8px; }
.site-footer a { color: #cfdcd6; }
.site-footer a:hover { color: #7fe0b0; }
.copy { border-top: 1px solid #24413a; margin-top: 30px; padding-top: 18px; font-size: 13px; }

/* whatsapp float */
.wa-float {
  position: fixed; right: 18px; bottom: 18px; z-index: 60;
  display: flex; align-items: center; gap: 8px;
  background: #1da851; color: #fff; font-weight: 700; font-size: 14px;
  padding: 11px 18px; border-radius: 999px; box-shadow: 0 6px 20px rgba(0,0,0,.22);
}
.wa-float:hover { background: #178c44; color: #fff; }

@media (max-width: 900px) {
  .hero-inner, .about-grid, .contact-grid, .detail-grid { grid-template-columns: 1fr; }
  .hero-facts { grid-template-columns: repeat(2, 1fr); }
  .hero-img { order: -1; }
}
@media (max-width: 720px) {
  .nav {
    display: none; position: absolute; top: 68px; left: 0; right: 0;
    background: #fff; border-bottom: 1px solid var(--line);
    flex-direction: column; gap: 0; padding: 8px 20px 14px;
  }
  .nav.open { display: flex; }
  .nav a { padding: 11px 0; border-bottom: 1px solid var(--line); }
  .nav-toggle { display: block; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

/* ==========================================================
   多语言：语言切换器 + RTL 预留（加阿拉伯语时无需改这里）
   ========================================================== */
.nav { margin-left: auto; }
.lang-switch { position: relative; flex: none; }
.lang-btn {
  display: inline-flex; align-items: center; gap: 6px;
  background: #fff; color: var(--ink); border: 1px solid var(--line);
  border-radius: 999px; padding: 7px 13px; font-size: 14px; font-weight: 600;
  cursor: pointer; font-family: inherit; white-space: nowrap;
}
.lang-btn:hover { border-color: var(--green); color: var(--green); }
.lang-menu {
  display: none; position: absolute; top: calc(100% + 8px); right: 0; min-width: 156px;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: 0 10px 28px rgba(0,0,0,.12); padding: 6px; z-index: 90;
}
.lang-switch:hover .lang-menu, .lang-switch.open .lang-menu { display: block; }
.lang-item {
  display: block; padding: 9px 12px; border-radius: 6px;
  color: var(--ink); font-size: 14px; font-weight: 500; white-space: nowrap;
}
.lang-item:hover { background: var(--soft); color: var(--green); }
.lang-item.current { color: var(--green); font-weight: 700; }

@media (max-width: 720px) {
  .header-inner { gap: 10px; }
  .lang-btn span { display: none; }
  .lang-btn { padding: 7px 10px; }
  .lang-menu { right: auto; left: 0; }
}

/* RTL（阿拉伯语 / 希伯来语）：语言包里 dir=rtl 时自动生效 */
[dir="rtl"] { text-align: right; }
[dir="rtl"] .brand-mark,
[dir="rtl"] .sec-head,
[dir="rtl"] .hero-text,
[dir="rtl"] .p-body,
[dir="rtl"] .why,
[dir="rtl"] .side-card,
[dir="rtl"] .cform { text-align: right; }
[dir="rtl"] .wa-float { right: auto; left: 18px; }
[dir="rtl"] .lang-menu { right: auto; left: 0; }
[dir="rtl"] .facts li { padding-left: 0; padding-right: 0; }
[dir="rtl"] .hero-facts,
[dir="rtl"] .footer-grid,
[dir="rtl"] .cat-grid { direction: rtl; }

/* ==========================================================
   品牌视觉：依 Cascore Logo 提取的 深蓝 #0A355D + 金黄 #FFC400
   （追加覆盖，不改动原有布局规则）
   ========================================================== */
:root {
  --navy: #0A355D;
  --navy-d: #072A4A;
  --yellow: #FFC400;
  --yellow-d: #C89100;
  --green: #0A355D;      /* 原绿色强调位统一改为品牌深蓝 */
  --green-d: #072A4A;
  --ink: #172B45;
  --muted: #5C6B7E;
  --line: #DCE2E9;
  --soft: #F2F5F8;
  --radius: 4px;
}
body { font-family: Arial, "Helvetica Neue", "Microsoft JhengHei", "Microsoft YaHei", sans-serif; }
h1 { font-size: clamp(32px, 4.4vw, 52px); letter-spacing: -.025em; }
h2 { letter-spacing: -.02em; }
a { color: var(--navy); }
a:hover { color: var(--yellow-d); }

/* logo */
.brand img { height: 36px; width: auto; display: block; }
.site-footer .brand-foot { display: block; margin-bottom: 12px; }
.site-footer .brand-foot img { height: 40px; width: auto; display: block; }
@media (max-width: 720px) { .brand img { height: 30px; } }

/* header */
.nav a:hover, .nav a.active { color: var(--navy); border-color: var(--yellow); }

/* hero —— 深蓝底 + 金色强调，与 Logo 呼应 */
.hero {
  background: var(--navy);
  background-image:
    radial-gradient(ellipse at 82% 18%, rgba(255,196,0,.13), transparent 52%),
    radial-gradient(ellipse at 10% 92%, rgba(255,255,255,.06), transparent 58%);
  border-bottom: 0;
}
.hero h1 { color: #fff; }
.hero h1 .accent { color: var(--yellow); }
.hero .lead { color: #C6D1E1; }
.hero .badge {
  background: rgba(255,196,0,.14); color: var(--yellow);
  border: 1px solid rgba(255,196,0,.30); border-radius: 2px;
  letter-spacing: .04em;
}
.hero-facts li { border-left: 3px solid var(--yellow); }
.hero-facts strong { color: #fff; }
.hero-facts span { color: #A8B9CF; }
.hero-img img { box-shadow: 0 20px 55px rgba(0,0,0,.38); background: #fff; }

/* 按钮 —— 主按钮金黄 */
.btn {
  background: var(--yellow); color: var(--navy-d); border: 1px solid var(--yellow);
  border-radius: 2px; font-weight: 700; letter-spacing: .01em;
}
.btn:hover { background: #E6B000; border-color: #E6B000; color: var(--navy-d); }
.btn-ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,.45); }
.btn-ghost:hover { background: rgba(255,255,255,.10); color: #fff; border-color: rgba(255,255,255,.75); }
.btn-light { background: #fff; color: var(--navy); border-color: #fff; }
.btn-light:hover { background: var(--yellow); border-color: var(--yellow); color: var(--navy-d); }

/* 分类编号（01 / 02 …）——工业目录感 */
.cat-no { display: block; font-size: 11px; font-weight: 700; letter-spacing: .16em; color: var(--yellow-d); margin-bottom: 2px; }
.sec-head .cat-no { color: #8B650D; }

/* 卡片细节 */
.pc-code { background: #E8EFF6; color: var(--navy); border-radius: 2px; }
.cat-card .more { color: var(--navy); }
.cat-card:hover, .p-card:hover { box-shadow: 0 10px 28px rgba(10,53,93,.13); }
.side-card { background: var(--soft); }
.cform input:focus, .cform textarea:focus, .cform select:focus {
  outline: 2px solid #FFE9A8; border-color: var(--navy);
}

/* CTA / footer */
.cta p { color: #B9C8DD; }
.site-footer { color: #C3CFDF; background: var(--navy-d); }
.site-footer a { color: #C3CFDF; }
.site-footer a:hover { color: var(--yellow); }
.site-footer .muted { color: #9FB0C6; }
.copy { border-top-color: #23405F; color: #8FA1B8; }
.wa-float { box-shadow: 0 8px 24px rgba(10,53,93,.30); }

/* ===== 产品页：系列标签栏 + 悬停切换 ===== */
.cat-tabs { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 36px; }
.cat-tab {
  flex: 1 1 170px; display: flex; flex-direction: column; align-items: flex-start; gap: 6px;
  background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 14px;
  cursor: pointer; font: inherit; text-align: left;
  transition: border-color .18s, box-shadow .18s, transform .18s, background .18s;
}
.cat-tab img { width: 100%; height: 88px; object-fit: cover; border-radius: 8px; }
.cat-tab .cat-tab-name { font-weight: 700; font-size: 14px; color: var(--navy); line-height: 1.3; }
.cat-tab .cat-tab-n { font-size: 12px; color: var(--muted); }
.cat-tab:hover { border-color: var(--navy); box-shadow: 0 8px 20px rgba(10,53,93,.10); transform: translateY(-2px); }
.cat-tab.active { background: var(--navy); border-color: var(--navy); }
.cat-tab.active .cat-tab-name { color: #fff; }
.cat-tab.active .cat-tab-n { color: #C3CFDF; }
.cat-tab.active .cat-no { color: var(--yellow); }
.prod-block { display: none; }
.prod-block.active { display: block; animation: prodFade .25s ease; }
@keyframes prodFade { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
@media (max-width: 720px) {
  .cat-tab { flex: 1 1 45%; padding: 10px; }
  .cat-tab img { height: 64px; }
}