/* ============================================================
   LI-XIANG TECH — design system v0
   工业重型装备风格：深炭 + 安全黄 + 工程蓝图纸纹理
   ============================================================ */
:root {
  /* color */
  --ink:        #151a20;   /* 主文字 */
  --navy:       #10151c;   /* 深色底（页脚/顶栏/Hero） */
  --navy-2:     #1a2129;
  --yellow:     #f2a900;   /* 品牌主色 / CTA */
  --yellow-h:   #ffc21e;
  --yellow-ink: #241a00;
  --bg:         #f3f5f7;   /* 页面浅灰 */
  --paper:      #ffffff;
  --line:       #e1e4e8;
  --line-2:     #d4d8dd;
  --muted:      #5c6672;
  --green:      #1e8e3e;
  --red:        #c5221f;
  --shadow-sm:  0 1px 2px rgba(16,21,28,.06);
  --shadow-md:  0 10px 30px -12px rgba(16,21,28,.22);
  /* type */
  --font-h: "Barlow Condensed", "Roboto Condensed", "Arial Narrow", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-b: "Barlow", "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  /* shape */
  --r: 6px;
  --notch: 16px;
  --maxw: 1240px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-b);
  font-size: 16px; line-height: 1.6; color: var(--ink);
  background: var(--bg); -webkit-font-smoothing: antialiased;
}
img, svg { display: block; }
.ico { width: 1em; height: 1em; flex: none; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: 0; background: none; color: inherit; text-align: left; }
.chip, .w-tab, .brand-btn { text-align: center; }
.wrap { max-width: var(--maxw); margin-inline: auto; padding-inline: 20px; }
.section { padding: 64px 0; }
.sec-head { margin-bottom: 34px; }
.sec-kicker {
  font-family: var(--font-h); text-transform: uppercase; letter-spacing: .18em;
  font-size: 13px; font-weight: 600; color: #a97900; margin-bottom: 6px;
}
.sec-head h2 { font-family: var(--font-h); font-weight: 700; font-size: clamp(30px, 4.4vw, 44px); line-height: 1.05; text-transform: uppercase; letter-spacing: .01em; }
.sec-head .sub { color: var(--muted); margin-top: 6px; max-width: 640px; }
.sec-head.row { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.sec-head .head-right { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.bg-white { background: var(--paper); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px; justify-content: center;
  font-family: var(--font-h); font-weight: 600; letter-spacing: .08em; text-transform: uppercase;
  font-size: 16px; padding: 12px 22px; border-radius: var(--r);
  transition: background .15s, color .15s, border-color .15s, transform .1s; white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-y { background: var(--yellow); color: var(--yellow-ink); }
.btn-y:hover { background: var(--yellow-h); }
.btn-dark { background: var(--navy); color: #fff; }
.btn-dark:hover { background: #232d38; }
.btn-ghost { background: transparent; color: #fff; border: 1.5px solid rgba(255,255,255,.55); }
.btn-ghost:hover { border-color: #fff; background: rgba(255,255,255,.08); }
.btn-outline { background: transparent; color: var(--ink); border: 1.5px solid var(--line-2); }
.btn-outline:hover { border-color: var(--navy); background: var(--navy); color: #fff; }
.btn-lg { padding: 15px 30px; font-size: 18px; }
.btn-sm { padding: 8px 14px; font-size: 14px; }
.btn .ico { width: 16px; height: 16px; }

/* ---------- topbar / demo ---------- */
.demo-bar { background: #7a2e12; color: #ffe9d8; font-size: 12.5px; text-align: center; padding: 4px 12px; letter-spacing: .04em; }
.topbar { background: var(--navy); color: #c9d1da; font-size: 13.5px; }
.topbar .wrap { display: flex; align-items: center; justify-content: space-between; gap: 14px; min-height: 38px; flex-wrap: wrap; }
.topbar .announce { color: #8fd0a8; }
.topbar .right { display: flex; align-items: center; gap: 16px; }
.topbar .tel { white-space: nowrap; }
.topbar .tel a { color: #fff; font-weight: 600; display: inline-flex; gap: 6px; align-items: center; white-space: nowrap; }
.lang-tabs { display: inline-flex; border: 1px solid rgba(255,255,255,.2); border-radius: 4px; overflow: hidden; }
.lang-tabs button { color: #9aa5b1; font-size: 12.5px; padding: 3px 9px; }
.lang-tabs button.on { background: var(--yellow); color: var(--yellow-ink); font-weight: 600; }

/* ---------- header ---------- */
.site-header { background: var(--paper); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 50; }
.header-row { display: flex; align-items: center; gap: 22px; min-height: 100px; }
.brand { display: flex; align-items: center; gap: 11px; flex: none; }
.brand .logo {
  width: 46px; height: 46px; background: var(--navy); color: var(--yellow);
  display: grid; place-items: center; border-radius: var(--r);
  font-family: var(--font-h); font-weight: 700; font-size: 22px; letter-spacing: .02em;
  border: 2px solid var(--yellow);
}
.brand img.logo { width: auto; height: 90px; max-width: 360px; background: transparent; border: none; border-radius: 0; object-fit: contain; padding: 0; }
.site-footer .brand img.logo { background: #fff; border-radius: 8px; padding: 6px; height: 74px; }
.brand .bname { font-family: var(--font-h); font-weight: 700; font-size: 23px; line-height: 1.15; letter-spacing: .02em; }
.brand .btag { font-size: 11.5px; color: var(--muted); letter-spacing: .04em; margin-top: 3px; }
.h-search { flex: 1; max-width: 520px; margin-left: auto; position: relative; }
.h-search input {
  width: 100%; border: 1.5px solid var(--line-2); border-radius: 999px; background: var(--bg);
  padding: 11px 46px 11px 18px; font-size: 15px; outline: none; transition: border-color .15s;
}
.h-search input:focus { border-color: var(--yellow); background: #fff; }
.h-search button {
  position: absolute; right: 4px; top: 4px; bottom: 4px; width: 38px; border-radius: 999px;
  background: var(--yellow); color: var(--yellow-ink); display: grid; place-items: center;
}
.h-search button:hover { background: var(--yellow-h); }
.h-search .ico { width: 17px; height: 17px; }
.h-actions { display: flex; align-items: center; gap: 12px; margin-left: auto; }
.header-row .btn-shop { flex: none; }
.ghost-cta { display: inline-flex; gap: 7px; align-items: center; color: var(--muted); font-weight: 600; font-size: 14.5px; padding: 8px 6px; }
.ghost-cta:hover { color: var(--ink); }

/* ---------- hero ---------- */
.hero { background: var(--navy); color: #fff; position: relative; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(circle at 82% 18%, rgba(242,169,0,.10), transparent 42%),
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: auto, 46px 46px, 46px 46px;
}
.hero .wrap { position: relative; display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 24px; padding-block: 72px 84px; align-items: center; }
.hero-kicker { font-family: var(--font-h); letter-spacing: .2em; text-transform: uppercase; color: var(--yellow); font-weight: 600; font-size: 14px; margin-bottom: 14px; }
.hero h1 { font-family: var(--font-h); font-weight: 700; font-size: clamp(40px, 5.6vw, 66px); line-height: .98; text-transform: uppercase; }
.hero h1 .accent { color: var(--yellow); }
.hero .lede { color: #b9c2cc; margin: 18px 0 28px; max-width: 520px; font-size: 17px; }
.hero .cta-row { display: flex; gap: 14px; flex-wrap: wrap; }

/* 公司横幅大图（位于 hero 之下） */
.home-banner { background: #0c1015; }
.home-banner img { width: 100%; display: block; aspect-ratio: 3 / 2; object-fit: cover; }

/* 5-step search wizard (hrparts-inspired) */
/* hero 右列：搜索卡 + 社交链接 */
.hero-side {
  align-self: stretch;      /* 拉满整行高度，让社交行能沉底与左侧按钮行水平对齐 */
  margin-top: 48px;         /* 跳过左侧 kicker 黄字（约两行），卡顶正好落在 H1 顶部 */
  margin-right: -20px;      /* 向右探出一点容器留白 */
  display: flex; flex-direction: column; gap: 14px;
}
.wizard5 {
  background: var(--paper); color: var(--ink); border-radius: 10px;
  box-shadow: var(--shadow-md); border-top: 4px solid var(--yellow);
  overflow: hidden;
  width: 100%;
  max-width: 720px;         /* 限制最大宽度，不撑满整栏 */
}
.hero-social {
  display: flex; gap: 10px; justify-content: flex-end; align-items: center;
  margin-top: auto;         /* 沉底：与左侧 .cta-row 按钮行同一水平带 */
}
.hero-social a {
  width: 38px; height: 38px; border-radius: 50%;
  display: grid; place-items: center;
  color: #fff; background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.28);
  transition: background .15s, color .15s, border-color .15s, transform .15s;
}
.hero-social a:hover {
  background: var(--yellow); color: var(--yellow-ink);
  border-color: var(--yellow); transform: translateY(-2px);
}
/* 品牌色变体：Facebook 官方蓝 */
.hero-social a.fb {
  background: #1877F2; border-color: #1877F2; color: #fff;
}
.hero-social a.fb:hover {
  background: #0d5fd6; border-color: #0d5fd6; color: #fff;
}
/* 品牌色变体：Instagram 官方渐变（黄→橙→粉→紫→蓝） */
.hero-social a.ig,
.hero-social a.ig:hover {
  background: radial-gradient(circle at 30% 107%,
    #fdf497 0%, #fdf497 5%, #fd5949 45%, #d6249f 60%, #285AEB 90%);
  border-color: transparent; color: #fff;
}
.hero-social a.ig:hover { filter: brightness(1.1); transform: translateY(-2px); }
/* WhatsApp 双行联系（图标行左侧空白处） */
.hero-wa {
  margin-right: auto;         /* 把右侧三个圆形图标推到最右，WhatsApp 行靠左占空白 */
  display: flex; flex-direction: column; gap: 9px;
  align-items: flex-start;    /* 两行左对齐 = 垂直对齐 */
}
.hero-social a.wa-line {
  width: auto; height: auto; padding: 0;
  border: none; border-radius: 0; background: none;
  display: inline-flex; align-items: center; gap: 9px;
  color: #fff; font-weight: 700; font-size: 17px;
  white-space: nowrap;
}
.hero-social a.wa-line .ico { width: 21px; height: 21px; color: #25D366; }  /* WhatsApp 官方绿 */
.hero-social a.wa-line:hover {
  background: none; border-color: transparent; transform: none;
  color: #25D366;
}
.hero-social .ico { width: 19px; height: 19px; }
.w5-tabs { display: flex; }
.w5-tab {
  flex: 1; padding: 12px 18px; font-weight: 700; font-size: 15px;
  color: var(--ink); background: rgba(255,255,255,.55); border: 0;
  border-right: 1px solid rgba(0,0,0,.06); cursor: pointer;
  transition: background .15s, color .15s;
}
.w5-tab:last-child { border-right: 0; }
.w5-tab:hover { background: rgba(255,255,255,.85); }
.w5-tab.on { background: #2a2f3a; color: #fff; }
.w5-title {
  font-family: var(--font-h); font-weight: 700; font-size: 22px;
  text-transform: uppercase; padding: 16px 20px 8px; color: var(--ink);
}
.w5-body { padding: 6px 10px 14px; }
.w5-steps {
  display: grid;
  grid-template-columns: 1fr 1fr auto auto;
  gap: 6px; align-items: stretch;
}
.w5-step {
  display: flex; align-items: center; background: #fff;
  border: 1px solid var(--line-2); border-radius: 6px;
  height: 56px; min-width: 0; overflow: hidden;
}
.w5-step.disabled { background: #f3f4f5; opacity: .75; }
.w5-num {
  flex: 0 0 22px; width: 22px; height: 100%;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-h); font-weight: 700; font-size: 14px;
  color: var(--ink); background: rgba(0,0,0,.04); border-right: 1px solid var(--line-2);
}
.w5-sel { position: relative; flex: 1; min-width: 0; }
.w5-sel select {
  appearance: none; -webkit-appearance: none;
  width: 100%; height: 100%; border: 0; background: transparent;
  padding: 0 24px 0 8px; font-size: 14.5px; color: var(--ink);
  outline: none; cursor: pointer;
}
.w5-sel select:disabled { cursor: not-allowed; }
.w5-caret {
  position: absolute; right: 8px; top: 50%; transform: translateY(-50%);
  pointer-events: none; color: var(--muted); font-size: 12px;
}
.w5-btn-go, .w5-btn-reset {
  height: 56px; border: 0; border-radius: 6px;
  font-weight: 700; font-size: 15px; padding: 0 18px; cursor: pointer;
  white-space: nowrap;
}
.w5-btn-go { background: var(--yellow); color: var(--yellow-ink); }
.w5-btn-go:hover { background: #e09700; }
.w5-btn-reset { background: #d8dadc; color: var(--ink); }
.w5-btn-reset:hover { background: #c8cacd; }
.w5-kw { display: grid; grid-template-columns: 1fr auto auto; gap: 8px; }
.w5-kw input {
  height: 56px; border: 1px solid var(--line-2); border-radius: 6px;
  padding: 0 14px; font-size: 15px; color: var(--ink); outline: none;
}
.w5-kw input:focus { border-color: var(--yellow); }
.w5-hint {
  font-size: 12.5px; color: var(--muted); margin: 10px 4px 0;
}

/* machine filter chips above products */
.chiprow { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  border: 1.5px solid var(--line-2); background: #fff; color: var(--ink);
  padding: 7px 15px; border-radius: 999px; font-size: 14.5px; font-weight: 600; transition: all .15s;
}
.chip:hover { border-color: var(--navy); }
.chip.on { background: var(--navy); color: #fff; border-color: var(--navy); }
.chip.yellow.on { background: var(--yellow); color: var(--yellow-ink); border-color: var(--yellow); }

/* lifttops-style category tabs */
.cat-tabs { display: flex; gap: 10px; flex-wrap: wrap; margin: 2px 0 16px; }
.cat-tab {
  display: inline-flex; align-items: center; gap: 10px;
  background: #fff; border: 1.5px solid var(--line-2); border-radius: var(--r);
  padding: 10px 16px; font-family: var(--font-h); font-weight: 700;
  font-size: 16px; text-transform: uppercase; letter-spacing: .05em;
  color: var(--ink); transition: border-color .15s, background .15s, color .15s;
}
.cat-tab .ct-n {
  font-size: 12px; font-weight: 600; color: var(--muted); line-height: 1;
  background: rgba(0,0,0,.07); border-radius: 999px; padding: 4px 9px;
}
.cat-tab:hover { border-color: var(--navy); }
.cat-tab.on { background: var(--navy); border-color: var(--navy); color: #fff; }
.cat-tab.on .ct-n { background: rgba(255,255,255,.2); color: #fff; }
/* 次级部件类型筛选行 */
.type-filter {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  padding: 10px 14px; background: #f6f7f8; border: 1px solid var(--line);
  border-radius: var(--r); margin-bottom: 16px;
}
.tf-label {
  font-size: 12.5px; font-weight: 700; text-transform: uppercase;
  letter-spacing: .08em; color: var(--muted); white-space: nowrap;
}
.type-filter .chiprow { gap: 6px; }
.type-filter .chip { padding: 5px 13px; font-size: 13px; background: transparent; }
.type-filter .chip.on { background: var(--navy); color: #fff; }
.prod-count { margin-bottom: 12px; }

/* ---------- benefits ---------- */
.benefit-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.benefit { background: var(--paper); border: 1px solid var(--line); border-radius: var(--r); padding: 22px 20px; }
.benefit .b-ico {
  width: 44px; height: 44px; border-radius: var(--r); background: #fff6dd; color: #b37f00;
  display: grid; place-items: center; margin-bottom: 14px; border: 1px solid #f3e2ae;
}
.benefit .b-ico .ico { width: 24px; height: 24px; }
.benefit h4 { font-family: var(--font-h); font-size: 20px; font-weight: 700; text-transform: uppercase; letter-spacing: .02em; margin-bottom: 4px; }
.benefit p { color: var(--muted); font-size: 14.5px; }

/* ---------- machine cards ---------- */
.machine-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.m-card {
  background: var(--paper); border: 1px solid var(--line); position: relative; display: block;
  clip-path: polygon(0 0, calc(100% - var(--notch)) 0, 100% var(--notch), 100% 100%, 0 100%);
  transition: transform .18s, box-shadow .18s; min-height: 260px;
}
.m-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.m-card .mc-inner { padding: 22px 20px; display: flex; flex-direction: column; height: 100%; }
.m-card .mc-idx { font-family: var(--font-h); font-size: 13px; letter-spacing: .2em; color: #b8bdc4; font-weight: 600; }
.m-card h3 { font-family: var(--font-h); font-weight: 700; font-size: 30px; text-transform: uppercase; margin: 8px 0 4px; line-height: 1; }
.m-card .mc-en { font-family: var(--font-h); font-weight: 500; color: var(--muted); text-transform: uppercase; letter-spacing: .06em; font-size: 14px; }
.m-card .mc-models { color: var(--muted); font-size: 14px; margin: 14px 0 18px; flex: 1; }
.m-card .mc-foot { display: flex; align-items: center; justify-content: space-between; border-top: 1px dashed var(--line-2); padding-top: 12px; }
.m-card .mc-count { font-family: var(--font-h); font-weight: 600; color: #a97900; }
.m-card .go { font-family: var(--font-h); text-transform: uppercase; font-weight: 600; letter-spacing: .06em; font-size: 14px; color: var(--ink); display: inline-flex; gap: 6px; align-items: center; }
.m-card .go .ico { width: 15px; height: 15px; transition: transform .15s; }
.m-card:hover .go .ico { transform: translateX(4px); }
.m-card .m-line {
  position: absolute; top: 0; left: 0; right: 0; height: 5px; background: var(--yellow);
}

/* ---------- part-type grid (cross cutting) ---------- */
.pt-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.pt-card {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--r);
  padding: 16px 18px; display: flex; align-items: center; gap: 14px; text-align: left;
  transition: border-color .15s, box-shadow .15s;
}
.pt-card:hover { border-color: var(--yellow); box-shadow: var(--shadow-sm); }
.pt-card .pc-ico { width: 40px; height: 40px; flex: none; color: #c98d00; }
.pt-card .pc-ico .ico { width: 34px; height: 34px; }
.pt-card .pc-name { font-family: var(--font-h); font-weight: 700; font-size: 19px; text-transform: uppercase; letter-spacing: .03em; line-height: 1.1; }
.pt-card .pc-sub { font-size: 13px; color: var(--muted); }
.pt-card.all {
  background: var(--navy); color: #fff; border-color: var(--navy); justify-content: space-between;
}
.pt-card.all:hover { background: #232d38; }
.pt-card.all .pc-sub { color: #9aa5b1; }
.pt-card.all .pc-ico { color: var(--yellow); }

/* ---------- products ---------- */
#products { scroll-margin-top: 120px; }
.prod-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.p-card {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden;
  display: flex; flex-direction: column; position: relative; transition: transform .18s, box-shadow .18s;
}
.p-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.p-media {
  aspect-ratio: 4/3; background: #e9edf1; position: relative; overflow: hidden;
  background-image:
    linear-gradient(rgba(21,26,32,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(21,26,32,.045) 1px, transparent 1px);
  background-size: 18px 18px;
  display: grid; place-items: center;
}
.p-media .ph {
  color: #8b95a1; font-family: var(--font-h); text-align: center; text-transform: uppercase;
}
.p-media .ph .ph-big { font-size: 22px; font-weight: 700; letter-spacing: .06em; }
.p-media .ph .ph-sml { font-size: 12px; letter-spacing: .15em; opacity: .8; }
.p-img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; background: #fff; padding: 10px; }
.cond-badge {
  position: absolute; top: 10px; left: 10px; z-index: 2; font-size: 12px; font-weight: 700;
  letter-spacing: .05em; text-transform: uppercase; padding: 3px 9px; border-radius: 4px;
  color: #fff;
}
.cond-badge.new { background: var(--green); }
.cond-badge.rebuilt { background: #a97900; }
.cond-badge.used { background: #5b6470; }
.demo-flag { position: absolute; top: 10px; right: 10px; z-index: 2; background: rgba(255,255,255,.9); border: 1px solid var(--line-2); color: var(--muted); font-size: 11px; padding: 2px 7px; border-radius: 4px; letter-spacing: .08em; }
.p-body { padding: 14px 16px 16px; display: flex; flex-direction: column; gap: 7px; flex: 1; }
.p-sku { font-family: "Consolas", "Courier New", monospace; font-size: 13px; color: #a97900; letter-spacing: .02em; display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.p-sku .oem-tag { background: #fff6dd; color: #8a6500; padding: 1px 7px; border-radius: 4px; font-size: 11.5px; letter-spacing: 0; }
.p-name { font-family: var(--font-h); font-size: 20px; font-weight: 700; line-height: 1.15; min-height: 2.3em; text-transform: uppercase; letter-spacing: .02em; }
.p-fits { font-size: 13.5px; color: var(--muted); display: flex; gap: 6px; }
.p-fits b { color: #39424d; font-weight: 600; font-family: var(--font-b); }
.p-spec { font-size: 13.5px; color: var(--muted); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.p-foot { margin-top: auto; padding-top: 10px; display: grid; grid-template-columns: 1fr auto; gap: 8px; align-items: center; border-top: 1px dashed var(--line-2); }
.p-foot .btn-quote { background: var(--yellow); color: var(--yellow-ink); font-weight: 700; font-family: var(--font-h); text-transform: uppercase; letter-spacing: .05em; font-size: 15px; padding: 8px 12px; border-radius: var(--r); }
.p-foot .btn-quote:hover { background: var(--yellow-h); }
.p-detail { color: var(--muted); font-weight: 600; font-size: 13.5px; display: inline-flex; gap: 5px; align-items: center; }
.p-detail:hover { color: var(--ink); }
.prod-toolbar { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.prod-count { color: var(--muted); font-size: 14px; margin: 0 0 12px; }

/* empty state */
.empty {
  grid-column: 1 / -1; background: var(--paper); border: 1.5px dashed var(--line-2);
  padding: 46px 20px; text-align: center; color: var(--muted); border-radius: var(--r);
}
.empty .btn { margin-top: 14px; }

/* ---------- brands ---------- */
.brand-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; }
.brand-btn {
  border: 1px solid var(--line-2); background: #fff; padding: 18px 10px; text-align: center;
  font-family: var(--font-h); font-weight: 600; letter-spacing: .04em; font-size: 18px; text-transform: uppercase;
  color: #39424d; border-radius: var(--r); transition: all .15s;
}
.brand-btn:hover { border-color: var(--navy); background: var(--navy); color: #fff; }
.brand-btn.more { color: #a97900; font-style: normal; }

/* ---------- about / CTA band ---------- */
.about-band { background: var(--navy); color: #fff; position: relative; overflow: hidden; }
.about-band::before {
  content: ""; position: absolute; right: -80px; top: -80px; width: 340px; height: 340px;
  background: radial-gradient(circle, rgba(242,169,0,.16), transparent 65%);
}
.about-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 46px; align-items: center; position: relative; }
.about-band h2 { font-family: var(--font-h); font-weight: 700; font-size: clamp(32px, 4.4vw, 46px); text-transform: uppercase; line-height: 1.02; }
.about-band h2 .accent { color: var(--yellow); }
.about-band p { color: #b9c2cc; margin: 14px 0 20px; max-width: 560px; }
.about-band ul { list-style: none; display: grid; gap: 10px; margin-bottom: 26px; }
.about-band li { display: flex; gap: 10px; align-items: center; color: #dfe5ea; }
.about-band li .ico { width: 18px; height: 18px; color: var(--yellow); flex: none; }
.cta-phone { text-align: left; }
.cta-phone .ph-num { font-family: var(--font-b); font-weight: 600; font-size: 16px; color: var(--yellow); letter-spacing: .02em; display: flex; align-items: center; justify-content: flex-start; gap: 10px; margin: 0 0 12px; }
.cta-phone .ph-num .ico { width: 16px; height: 16px; flex: none; }
.cta-phone .ph-line { display: flex; align-items: center; justify-content: flex-start; gap: 10px; font-size: 16px; margin: 0 0 12px; }
.cta-phone .ph-line:last-child { margin-bottom: 0; }
.cta-phone .ph-line .ico { width: 16px; height: 16px; flex: none; }
.cta-phone .ph-line a { display: inline-flex; align-items: center; gap: 10px; }
.cta-phone .ph-cap { text-transform: uppercase; font-family: var(--font-h); letter-spacing: .14em; color: #9aa5b1; font-weight: 600; margin-bottom: 10px; }
.cta-phone .ph-cap .dot { display: inline-block; width: 9px; height: 9px; background: var(--green); border-radius: 50%; margin-right: 7px; animation: pulse 1.6s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .35; } }

/* ---------- footer ---------- */
.site-footer { background: #0c1015; color: #9aa5b1; }
.foot-main { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 40px; padding: 56px 0 44px; }
.foot-brand .brand { color: #fff; }
.foot-brand .btag { color: #9aa5b1; }
.foot-brand .f-about { font-size: 14.5px; margin-top: 16px; max-width: 300px; }
.foot-col h5 { color: #fff; font-family: var(--font-h); text-transform: uppercase; letter-spacing: .1em; font-size: 15px; margin-bottom: 16px; }
.foot-col ul { list-style: none; display: grid; gap: 9px; }
.foot-col a { font-size: 14.5px; }
.foot-col a:hover { color: #fff; }
.foot-contact li { display: flex; gap: 9px; font-size: 14.5px; align-items: flex-start; }
.foot-contact .ico { width: 16px; height: 16px; color: var(--yellow); flex: none; margin-top: 4px; }
.foot-bottom { border-top: 1px solid rgba(255,255,255,.09); padding: 20px 0; font-size: 13px; }
.foot-bottom .wrap { display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap; }
.foot-bottom .disc { width: 100%; color: #6b7684; }

/* ---------- modal ---------- */
.modal-veil {
  position: fixed; inset: 0; background: rgba(10,14,18,.66); z-index: 90;
  display: grid; place-items: center; padding: 20px; opacity: 0; pointer-events: none; transition: opacity .18s;
}
.modal-veil.open { opacity: 1; pointer-events: auto; }
.modal {
  background: var(--paper); border-radius: 12px; width: min(860px, 100%); max-height: 90vh; overflow: auto;
  transform: translateY(10px); transition: transform .18s;
}
.modal-veil.open .modal { transform: none; }
.modal-head { display: flex; align-items: center; justify-content: space-between; padding: 18px 24px; border-bottom: 1px solid var(--line); position: sticky; top: 0; background: #fff; z-index: 2; }
.modal-head h3 { font-family: var(--font-h); font-weight: 700; font-size: 24px; text-transform: uppercase; }
.modal-x { width: 36px; height: 36px; border-radius: 50%; border: 1px solid var(--line-2); display: grid; place-items: center; }
.modal-x:hover { background: var(--bg); }
.modal-body { padding: 24px; }
/* product detail grid */
.pd-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 26px; }
.pd-media { background: #e9edf1; background-image: linear-gradient(rgba(21,26,32,.045) 1px, transparent 1px), linear-gradient(90deg, rgba(21,26,32,.045) 1px, transparent 1px); background-size: 18px 18px; border-radius: var(--r); aspect-ratio: 4/3; display: grid; place-items: center; position: relative; }
.pd-media .ph { color: #8b95a1; font-family: var(--font-h); text-transform: uppercase; text-align: center; }
.pd-media .ph .ph-big { font-size: 24px; font-weight: 700; letter-spacing: .06em; }
.pd h2 { font-family: var(--font-h); font-weight: 700; font-size: 30px; text-transform: uppercase; line-height: 1.08; margin-bottom: 6px; }
.pd-spec { color: var(--muted); margin-bottom: 16px; }
.kv { border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; margin-bottom: 18px; }
.kv-row { display: grid; grid-template-columns: 150px 1fr; font-size: 14.5px; }
.kv-row + .kv-row { border-top: 1px solid var(--line); }
.kv-row .k { background: var(--bg); padding: 10px 14px; font-weight: 600; color: var(--muted); font-family: var(--font-b); }
.kv-row .v { padding: 10px 14px; }
.kv-row .v.mono { font-family: Consolas, monospace; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 13px; }
.form-grid .full { grid-column: 1 / -1; }
.form-item label { display: block; font-weight: 600; font-size: 14px; margin-bottom: 5px; }
.form-item input, .form-item select, .form-item textarea {
  width: 100%; border: 1.5px solid var(--line-2); border-radius: var(--r); padding: 11px 12px;
  font-size: 15px; font-family: inherit; outline: none; background: #fff;
}
.form-item input:focus, .form-item select:focus, .form-item textarea:focus { border-color: var(--yellow); }
.form-item textarea { resize: vertical; min-height: 90px; }
.form-note { font-size: 12.5px; color: var(--muted); margin-top: 12px; }
.form-msg { border-radius: var(--r); padding: 12px 14px; font-size: 14px; margin-top: 12px; display: none; }
.form-msg.err { display: block; background: #fdeeee; color: var(--red); border: 1px solid #f5c6c6; }
.form-msg.ok { display: block; background: #e9f7ee; color: var(--green); border: 1px solid #b5e3c6; }
.ref-line {
  background: #fff6dd; border: 1px solid #f3e2ae; color: #6b4f00; border-radius: var(--r);
  padding: 10px 14px; font-size: 14px; margin-bottom: 14px; display: flex; gap: 10px; align-items: center; flex-wrap: wrap;
}
.ref-line b { font-family: Consolas, monospace; }
#modalActions { display: flex; gap: 10px; flex-wrap: wrap; }

/* ---------- find a part（无结果找件卡 / 列表底部引导条） ---------- */
.fp-inline {
  grid-column: 1 / -1; background: var(--paper); border: 1.5px dashed var(--line-2);
  border-radius: var(--r); padding: 28px 26px;
}
.fp-head { display: flex; gap: 16px; align-items: flex-start; }
.fp-head h4 { font-family: var(--font-h); font-weight: 700; font-size: 26px; text-transform: uppercase; }
.fp-head p { color: var(--muted); margin-top: 6px; max-width: 720px; font-size: 14.5px; }
.fp-ico { flex: none; width: 48px; height: 48px; border-radius: 10px; background: var(--navy); color: var(--yellow); display: grid; place-items: center; }
.fp-ico .ico { width: 22px; height: 22px; }
.fp-wrap { margin-top: 16px; }
.fp-ctx {
  display: inline-flex; align-items: center; gap: 7px; background: #fff6dd; border: 1px solid #f3e2ae; color: #6b4f00;
  border-radius: 999px; padding: 6px 14px; font-size: 13px; margin: 0 0 14px; flex-wrap: wrap;
}
.fp-ctx .ico { width: 14px; height: 14px; }
.fp-ctx b { font-family: Consolas, monospace; }
.fp-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 13px; }
.fp-note { font-size: 12.5px; color: var(--muted); margin: 12px 0 4px; }
.fp-msg { border-radius: var(--r); padding: 10px 14px; font-size: 14px; margin: 10px 0; display: none; }
.fp-msg.err { display: block; background: #fdeeee; color: var(--red); border: 1px solid #f5c6c6; }
.fp-msg.ok { display: block; background: #e9f7ee; color: var(--green); border: 1px solid #b5e3c6; }
/* 结果列表底部常驻引导条 */
.find-band {
  display: flex; align-items: center; gap: 18px; margin-top: 26px;
  background: var(--navy); color: #fff; border-radius: var(--r); padding: 18px 22px;
}
.fb-ico { flex: none; width: 44px; height: 44px; border-radius: 8px; background: rgba(242,169,0,.14); color: var(--yellow); display: grid; place-items: center; }
.fb-ico .ico { width: 20px; height: 20px; }
.fb-txt { flex: 1; min-width: 0; }
.fb-txt b { font-family: var(--font-h); font-weight: 700; font-size: 19px; text-transform: uppercase; letter-spacing: .04em; display: block; }
.fb-txt span { color: #b9c2cc; font-size: 13.5px; display: block; margin-top: 2px; }
.find-band .btn { flex: none; }
/* 成功态：摘要 + WhatsApp */
.fp-success { text-align: center; padding: 18px 4px 8px; }
.fp-ok { width: 62px; height: 62px; border-radius: 50%; background: var(--green); color: #fff; display: inline-grid; place-items: center; margin-bottom: 14px; }
.fp-ok .ico { width: 30px; height: 30px; }
.fp-success h4 { font-family: var(--font-h); font-weight: 700; font-size: 26px; text-transform: uppercase; }
.fp-sum { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 20px; margin: 14px 0 4px; }
.fp-sum span { background: var(--bg); border: 1px solid var(--line); border-radius: 999px; padding: 5px 13px; font-size: 13.5px; color: var(--muted); }
.fp-sum b { color: var(--ink); font-family: Consolas, monospace; }
.fp-success p { color: var(--muted); max-width: 560px; margin: 12px auto 20px; }
.fp-success .fp-ctx { margin-top: 2px; }
.btn-wa {
  display: inline-flex; align-items: center; gap: 9px; background: #25D366; color: #fff; font-weight: 700;
  border-radius: 999px; padding: 13px 24px; font-size: 15.5px; transition: filter .15s;
}
.btn-wa:hover { filter: brightness(1.08); }
.btn-wa .ico { width: 20px; height: 20px; }

/* ---------- responsive ---------- */
@media (max-width: 1080px) {
  .hero .wrap { grid-template-columns: 1fr; padding-block: 54px; }
  .hero-side { align-self: auto; margin-right: 0; margin-top: 0; }  /* 单列堆叠时取消偏移 */
  .hero-social { flex-wrap: wrap; gap: 12px 18px; }  /* 窄屏：WhatsApp 行与图标行允许换行 */
  .machine-grid { grid-template-columns: repeat(2, 1fr); }
  .prod-grid { grid-template-columns: repeat(3, 1fr); }
  .pt-grid { grid-template-columns: repeat(2, 1fr); }
  .benefit-grid { grid-template-columns: repeat(2, 1fr); }
  .brand-grid { grid-template-columns: repeat(4, 1fr); }
  .foot-main { grid-template-columns: 1fr 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .w5-steps { grid-template-columns: 1fr 1fr auto auto; }
  .w5-btn-go, .w5-btn-reset { grid-column: span 1; }
  .w5-kw { grid-template-columns: 1fr auto auto; }
}
@media (max-width: 900px) {
  .h-search { order: 3; max-width: none; flex-basis: 100%; margin-left: 0; }
  .header-row { flex-wrap: wrap; padding-block: 10px; }
  .w5-steps { grid-template-columns: 1fr 1fr; }
  .w5-btn-go, .w5-btn-reset { grid-column: span 1; }
  .w5-kw { grid-template-columns: 1fr; }
  .fp-grid { grid-template-columns: 1fr; }
  .find-band { flex-wrap: wrap; }
}
@media (max-width: 640px) {
  .section { padding: 44px 0; }
  .machine-grid, .prod-grid, .pt-grid, .benefit-grid { grid-template-columns: 1fr; }
  .brand-grid { grid-template-columns: repeat(3, 1fr); }
  .cat-tabs { display: grid; grid-template-columns: repeat(2, 1fr); }
  .cat-tab { width: 100%; justify-content: space-between; }
  .type-filter { align-items: flex-start; flex-direction: column; }
  .foot-main { grid-template-columns: 1fr; gap: 26px; }
  .h-actions .ghost-cta, .h-actions .btn-shop { display: none; }
  .pd-grid { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .kv-row { grid-template-columns: 1fr; }
  .topbar .announce { display: none; }
  .fp-inline { padding: 22px 18px; }
  .fp-head { flex-direction: column; }
  .find-band .btn { width: 100%; justify-content: center; }
}
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}