/* ==========================================================================
   惠兴橡塑 HUIXING — 官网样式
   ========================================================================== */

:root {
  --red: #c01010;
  --red-dark: #960c0c;
  --red-soft: #fdeaea;
  --ink: #14171c;
  --ink-2: #2b3038;
  --muted: #6b7280;
  --line: #e4e7ec;
  --bg: #f6f7f9;
  --white: #fff;
  --radius: 4px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 8px 24px rgba(16, 24, 40, .06);
  --wrap: 1240px;
  --head-h: 72px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Inter", "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-2);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { color: var(--ink); line-height: 1.3; margin: 0; font-weight: 700; letter-spacing: -.01em; }
p { margin: 0 0 1em; }
ul { margin: 0; padding-left: 1.1em; }
li { margin: .3em 0; }
table { border-collapse: collapse; width: 100%; }
button { font: inherit; }

/* ---------- 布局 ---------- */
.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.section { padding: 76px 0; }
.section--tight { padding: 56px 0; }
.section--gray { background: var(--bg); }
.section--dark { background: var(--ink); color: #b9c0c9; }
.section--dark h2, .section--dark h3 { color: #fff; }

.sec-head { margin-bottom: 40px; max-width: 760px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 12px; letter-spacing: .18em; text-transform: uppercase;
  color: var(--red); font-weight: 700; margin-bottom: 14px;
}
.eyebrow::before { content: ""; width: 26px; height: 2px; background: var(--red); }
.sec-head h2 { font-size: 30px; margin-bottom: 12px; }
.sec-head p { color: var(--muted); margin: 0; font-size: 15px; }
.section--dark .sec-head p { color: #98a1ad; }

.sec-head--row { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; max-width: 100%; flex-wrap: wrap; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 46px; padding: 0 26px; border-radius: var(--radius);
  font-size: 14px; font-weight: 600; letter-spacing: .02em;
  border: 1px solid transparent; cursor: pointer; transition: .18s ease;
  white-space: nowrap;
}
.btn--primary { background: var(--red); color: #fff; }
.btn--primary:hover { background: var(--red-dark); }
.btn--ghost { border-color: rgba(255, 255, 255, .5); color: #fff; }
.btn--ghost:hover { background: #fff; color: var(--ink); border-color: #fff; }
.btn--line { border-color: var(--line); color: var(--ink); background: #fff; }
.btn--line:hover { border-color: var(--ink); }
.btn--sm { height: 38px; padding: 0 16px; font-size: 13px; }

/* ---------- 顶部 ---------- */
.topbar {
  background: var(--ink); color: #aab2bd; font-size: 12.5px;
  letter-spacing: .02em;
}
.topbar .wrap { display: flex; justify-content: space-between; align-items: center; height: 38px; gap: 16px; }
.topbar .tb-right { display: flex; gap: 22px; align-items: center; }
.topbar a:hover { color: #fff; }
.topbar .dot { color: #4b535e; }

.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .96);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: var(--head-h); gap: 24px; }

.logo { display: flex; align-items: center; gap: 12px; }
.logo-mark {
  width: 38px; height: 38px; flex: 0 0 38px;
  background: var(--red); color: #fff;
  display: grid; place-items: center;
  font-weight: 800; font-size: 17px; letter-spacing: -.05em;
  border-radius: 2px;
}
.logo-txt strong { display: block; font-size: 18px; color: var(--ink); letter-spacing: .06em; line-height: 1.2; }
.logo-txt span { display: block; font-size: 10px; color: var(--muted); letter-spacing: .16em; white-space: nowrap; }
.logo-txt { min-width: 0; overflow: hidden; }

.nav { display: flex; align-items: center; gap: 4px; }
.nav > a {
  position: relative; padding: 8px 14px; font-size: 14.5px; font-weight: 500;
  color: var(--ink-2); border-radius: var(--radius); transition: .15s;
}
.nav > a:hover { color: var(--red); background: var(--red-soft); }
.nav > a.active { color: var(--red); font-weight: 600; }
.nav > a.active::after {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: 0;
  height: 2px; background: var(--red);
}

.header-cta { display: flex; align-items: center; gap: 10px; }
.header-tel { display: flex; flex-direction: column; line-height: 1.25; text-align: right; }
.header-tel small { font-size: 11px; color: var(--muted); letter-spacing: .06em; }
.header-tel strong { font-size: 16px; color: var(--ink); letter-spacing: .02em; }

.nav-toggle {
  display: none; width: 42px; height: 42px; border: 1px solid var(--line);
  background: #fff; border-radius: var(--radius); cursor: pointer; padding: 0;
}
.nav-toggle span {
  display: block; width: 18px; height: 2px; background: var(--ink);
  margin: 3.5px auto; transition: .2s;
}

/* ---------- Hero ---------- */
.hero {
  position: relative; color: #fff; overflow: hidden;
  background: #0d1014;
  min-height: 560px; display: flex; align-items: center;
}
.hero-bg { position: absolute; inset: 0; }
.hero-bg img { width: 100%; height: 100%; object-fit: cover; opacity: .42; filter: grayscale(.15); }
.hero-bg::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(100deg, rgba(9, 11, 14, .95) 8%, rgba(9, 11, 14, .78) 46%, rgba(9, 11, 14, .34) 100%);
}
.hero .wrap { position: relative; padding-top: 96px; padding-bottom: 96px; }
.hero-inner { max-width: 720px; }
.hero .tag {
  display: inline-flex; align-items: center; gap: 10px; height: 30px; padding: 0 14px;
  border: 1px solid rgba(255, 255, 255, .26); border-radius: 100px;
  font-size: 12px; letter-spacing: .12em; color: #e7ebf0; margin-bottom: 24px;
}
.hero .tag i { width: 6px; height: 6px; background: var(--red); border-radius: 50%; display: block; }
.hero h1 { font-size: 44px; color: #fff; line-height: 1.24; margin-bottom: 20px; letter-spacing: -.02em; }
.hero h1 em { font-style: normal; color: #ff5a5a; }
.hero p.lead { font-size: 16px; color: #c3cad4; max-width: 620px; margin-bottom: 22px; }
.hero-std { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 34px; }
.hero-std span {
  font-size: 12px; letter-spacing: .04em; color: #d6dbe3;
  border: 1px solid rgba(255, 255, 255, .18); border-radius: 2px; padding: 4px 10px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* ---------- 数据条 ---------- */
.stats { background: var(--ink); color: #fff; border-top: 1px solid rgba(255, 255, 255, .08); }
.stats .wrap {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 1px; background: rgba(255, 255, 255, .1); padding: 0;
}
.stats .item { background: var(--ink); padding: 34px 26px; }
.stats b { display: block; font-size: 34px; line-height: 1; letter-spacing: -.02em; color: #fff; }
.stats b small { font-size: 14px; font-weight: 600; margin-left: 4px; color: #ff7a7a; }
.stats span { display: block; margin-top: 10px; font-size: 13px; color: #9aa3af; letter-spacing: .04em; }

/* ---------- 产品网格 ---------- */
/* grid 子项允许收缩，避免宽表格把页面撑出横向滚动 */
.grid > *, .split > *, .with-side > *, .contact-grid > *, .prod-head > * { min-width: 0; }

.grid { display: grid; gap: 24px; }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

.pcard {
  border: 1px solid var(--line); background: #fff; border-radius: var(--radius);
  overflow: hidden; display: flex; flex-direction: column;
  transition: .2s ease;
}
.pcard:hover { border-color: #cfd5dd; box-shadow: var(--shadow); transform: translateY(-2px); }
.pcard-img { aspect-ratio: 4 / 3; overflow: hidden; background: #eef0f3; }
.pcard-img img { width: 100%; height: 100%; object-fit: cover; transition: .4s ease; }
.pcard:hover .pcard-img img { transform: scale(1.04); }
.pcard-body { padding: 20px 22px 22px; flex: 1; display: flex; flex-direction: column; }
.pcard-body h3 { font-size: 17px; margin-bottom: 6px; }
.pcard-body h3 a:hover { color: var(--red); }
.pcard-body .sub { font-size: 13px; color: var(--muted); margin: 0 0 12px; line-height: 1.65; }
.pcard-body .kw { display: flex; flex-wrap: wrap; gap: 6px; margin-top: auto; }
.pcard-body .kw span {
  font-size: 11.5px; color: #4b535e; background: var(--bg);
  border-radius: 2px; padding: 3px 8px; letter-spacing: .02em;
}
.pcard-more { margin-top: 14px; font-size: 13px; color: var(--red); font-weight: 600; }

/* ---------- 行业条 ---------- */
.industries { display: grid; grid-template-columns: repeat(5, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.industries div {
  background: #fff; padding: 26px 16px; text-align: center;
  font-size: 14px; color: var(--ink-2); letter-spacing: .04em;
}
.industries div b { display: block; font-size: 11px; color: #a6aeb9; letter-spacing: .1em; margin-top: 4px; font-weight: 500; }

/* ---------- 特性 / 图文 ---------- */
.split { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
.split-media img { width: 100%; border-radius: var(--radius); }
.split-media .caption { font-size: 12.5px; color: var(--muted); margin-top: 10px; }

.feats { display: grid; gap: 22px; }
.feat { display: flex; gap: 16px; }
.feat .ic {
  flex: 0 0 40px; width: 40px; height: 40px; border-radius: 2px;
  background: var(--red-soft); color: var(--red);
  display: grid; place-items: center; font-weight: 800; font-size: 15px;
}
.feat h4 { font-size: 15.5px; margin-bottom: 4px; }
.feat p { font-size: 13.5px; color: var(--muted); margin: 0; }

/* ---------- 页面头 / 面包屑 ---------- */
.pagehead {
  background: var(--ink); color: #fff; padding: 56px 0 48px;
  border-bottom: 3px solid var(--red);
}
.pagehead h1 { color: #fff; font-size: 32px; margin-bottom: 10px; }
.pagehead p { color: #a8b0bb; margin: 0; max-width: 720px; font-size: 14.5px; }
.crumb { font-size: 12.5px; color: #8d97a3; margin-bottom: 16px; letter-spacing: .03em; }
.crumb a:hover { color: #fff; }
.crumb i { margin: 0 8px; font-style: normal; color: #555f6b; }
.crumb-light { font-size: 12.5px; color: var(--muted); padding: 18px 0 0; }
.crumb-light a:hover { color: var(--red); }
.crumb-light i { margin: 0 8px; font-style: normal; color: #c3c9d2; }

/* ---------- 表格 ---------- */
.table-block { margin-top: 26px; }
.table-title { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 10px; }
.table-title h4 { font-size: 15px; }
.table-title span { font-size: 12.5px; color: var(--muted); }

.table-wrap {
  overflow: auto; border: 1px solid var(--line); border-radius: var(--radius);
  max-height: 560px;
}
.table-wrap table { min-width: 760px; font-size: 13px; }
.table-wrap thead th {
  position: sticky; top: 0; z-index: 2;
  background: var(--ink); color: #fff; font-weight: 600;
  padding: 11px 14px; text-align: left; white-space: nowrap;
  font-size: 12.5px; letter-spacing: .02em;
}
.table-wrap tbody td {
  padding: 10px 14px; border-bottom: 1px solid var(--line);
  white-space: nowrap; color: var(--ink-2);
}
.table-wrap tbody tr:nth-child(even) { background: #fafbfc; }
.table-wrap tbody tr:hover { background: var(--red-soft); }
.table-wrap tbody tr:last-child td { border-bottom: 0; }
.table-wrap td:first-child, .table-wrap th:first-child {
  position: sticky; left: 0; z-index: 1; background: inherit;
}
.table-wrap thead th:first-child { z-index: 3; background: var(--ink); }
.table-wrap tbody td:first-child { background: #fff; font-weight: 600; color: var(--ink); }
.table-wrap tbody tr:nth-child(even) td:first-child { background: #fafbfc; }
.table-wrap tbody tr:hover td:first-child { background: var(--red-soft); }

.table-note { font-size: 12.5px; color: var(--muted); margin-top: 10px; line-height: 1.7; }
.table-note code { background: #eef1f4; padding: 1px 5px; border-radius: 2px; font-size: 12px; }

/* 文本型表格：允许换行，避免长句被 nowrap 撑爆 */
.table-wrap--wrap table { min-width: 680px; }
.table-wrap--wrap tbody td { white-space: normal; min-width: 110px; line-height: 1.65; }
.table-wrap--wrap tbody td:first-child { min-width: 120px; }

details.spec-fold { border: 1px solid var(--line); border-radius: var(--radius); margin-top: 18px; }
details.spec-fold summary {
  cursor: pointer; padding: 14px 18px; font-size: 14px; font-weight: 600; color: var(--ink);
  display: flex; justify-content: space-between; align-items: center; list-style: none;
}
details.spec-fold summary::-webkit-details-marker { display: none; }
details.spec-fold summary::after { content: "展开规格表 ＋"; font-size: 12.5px; color: var(--red); font-weight: 600; }
details.spec-fold[open] summary::after { content: "收起规格表 －"; }
details.spec-fold[open] summary { border-bottom: 1px solid var(--line); }
details.spec-fold .fold-body { padding: 18px; }

/* ---------- 产品详情块 ---------- */
.prod { padding: 46px 0; border-bottom: 1px solid var(--line); scroll-margin-top: 96px; }
.prod:last-of-type { border-bottom: 0; }
.prod-head { display: grid; grid-template-columns: 1fr 340px; gap: 40px; align-items: start; margin-bottom: 24px; }
.prod-head h2 { font-size: 24px; margin-bottom: 6px; }
.prod-head .en { font-size: 12.5px; color: #97a0ac; letter-spacing: .06em; margin-bottom: 16px; display: block; }
.prod-head .desc { color: var(--muted); font-size: 14px; margin: 0; }
.prod-figure img { width: 100%; border-radius: var(--radius); border: 1px solid var(--line); }

.speclist { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); margin-top: 20px; }
.speclist div { background: #fff; padding: 13px 16px; }
.speclist dt { font-size: 11.5px; color: #95a0ac; letter-spacing: .08em; margin-bottom: 2px; }
.speclist dd { margin: 0; font-size: 14px; color: var(--ink); font-weight: 600; }
.speclist div.wide { grid-column: 1 / -1; }

.tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0 0; }
.tags span {
  font-size: 12px; background: var(--bg); border: 1px solid var(--line);
  border-radius: 2px; padding: 4px 10px; color: #4b535e;
}

/* ---------- 侧栏锚点 ---------- */
.with-side { display: grid; grid-template-columns: 240px 1fr; gap: 48px; align-items: start; }
.side-nav { position: sticky; top: 96px; border-left: 2px solid var(--line); padding-left: 0; }
.side-nav h5 { font-size: 11.5px; letter-spacing: .14em; color: #97a0ac; margin: 0 0 12px 16px; font-weight: 600; }
.side-nav a {
  display: block; padding: 9px 16px; font-size: 13.5px; color: var(--muted);
  border-left: 2px solid transparent; margin-left: -2px;
}
.side-nav a:hover { color: var(--red); }
.side-nav a.on { color: var(--red); font-weight: 600; border-left-color: var(--red); background: var(--red-soft); }

/* ---------- 表单字段 ---------- */
.field { display: flex; flex-direction: column; gap: 7px; }
.field label { font-size: 12.5px; color: #5b6472; letter-spacing: .04em; font-weight: 600; }
.field select, .field input {
  height: 44px; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 0 12px; font-size: 14px; color: var(--ink); background: #fff;
  outline: none; transition: .15s; width: 100%;
}
.field select:focus, .field input:focus { border-color: var(--red); box-shadow: 0 0 0 3px rgba(192, 16, 16, .08); }

.empty { padding: 56px 20px; text-align: center; color: var(--muted); font-size: 14px; border: 1px dashed var(--line); border-radius: var(--radius); }

/* ---------- CTA ---------- */
.cta { background: var(--red); color: #fff; padding: 56px 0; }
.cta .wrap { display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.cta h2 { color: #fff; font-size: 26px; margin-bottom: 8px; }
.cta p { color: rgba(255, 255, 255, .82); margin: 0; font-size: 14.5px; }
.cta-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.cta .btn--primary { background: #fff; color: var(--red); }
.cta .btn--primary:hover { background: #f4eaea; }
.cta .btn--ghost { border-color: rgba(255, 255, 255, .6); }
.cta .btn--ghost:hover { background: #fff; color: var(--red); border-color: #fff; }

/* ---------- 联系页 ---------- */
.contact-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: start; }
.info-list { border-top: 1px solid var(--line); }
.info-list .row { display: grid; grid-template-columns: 96px 1fr; gap: 16px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.info-list dt { font-size: 12.5px; color: #95a0ac; letter-spacing: .08em; }
.info-list dd { margin: 0; font-size: 15px; color: var(--ink); }
.info-list dd small { display: block; font-size: 12.5px; color: var(--muted); font-weight: 400; }

.form-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-card .field { margin-bottom: 16px; }
.form-card textarea {
  border: 1px solid var(--line); border-radius: var(--radius); padding: 12px;
  font: inherit; font-size: 14px; color: var(--ink); outline: none; resize: vertical; min-height: 108px;
}
.form-card textarea:focus { border-color: var(--red); box-shadow: 0 0 0 3px rgba(192, 16, 16, .08); }
.form-note { font-size: 12.5px; color: var(--muted); margin-top: 14px; line-height: 1.7; }
.form-ok {
  border: 1px solid #bfe3c8; background: #f2fbf4; border-radius: var(--radius);
  padding: 18px; font-size: 13.5px; color: #1f6b38; margin-top: 16px; display: none;
}
.form-ok.show { display: block; }
.form-ok pre {
  white-space: pre-wrap; font-family: inherit; font-size: 13px; color: #2f6b45;
  background: #fff; border: 1px solid #d6ecdc; border-radius: 2px; padding: 12px; margin: 10px 0;
}
.map-holder {
  margin-top: 22px; border: 1px solid var(--line); border-radius: var(--radius);
  background: repeating-linear-gradient(45deg, #f2f4f7, #f2f4f7 12px, #eef1f4 12px, #eef1f4 24px);
  height: 230px; display: grid; place-items: center; text-align: center; color: var(--muted); font-size: 13px;
  padding: 20px;
}

/* ---------- 页脚 ---------- */
.site-footer { background: #0d1014; color: #8f98a4; padding: 60px 0 0; font-size: 13.5px; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.1fr; gap: 40px; padding-bottom: 44px; }
.foot-grid h5 { color: #fff; font-size: 13px; letter-spacing: .1em; margin: 0 0 16px; font-weight: 600; }
.foot-grid a:hover { color: #fff; }
.foot-grid ul { list-style: none; padding: 0; margin: 0; }
.foot-grid li { margin: 0 0 9px; }
.foot-brand .logo { margin-bottom: 16px; }
.foot-brand .logo-txt strong { color: #fff; }
.foot-brand .logo-txt span { color: #7d8794; }
.foot-brand p { color: #8f98a4; line-height: 1.8; margin: 0 0 14px; }
.foot-contact li { display: flex; gap: 10px; }
.foot-contact li b { color: #fff; font-weight: 600; flex: 0 0 auto; }
.foot-bottom {
  border-top: 1px solid rgba(255, 255, 255, .08);
  padding: 20px 0; display: flex; justify-content: space-between; gap: 16px;
  font-size: 12.5px; color: #6f7885; flex-wrap: wrap;
}
.foot-bottom a:hover { color: #fff; }

/* ---------- 杂项 ---------- */
.notice {
  border-left: 3px solid var(--red); background: var(--red-soft);
  padding: 14px 18px; font-size: 13.5px; color: #7c2a2a; border-radius: 0 var(--radius) var(--radius) 0;
  margin: 20px 0;
}
.notice strong { color: var(--red); }
.prose h3 { font-size: 18px; margin: 30px 0 10px; }
.prose p { color: var(--muted); }
.prose ul { color: var(--muted); }
.prose strong { color: var(--ink); font-weight: 600; }

/* 理念三段：昨天 / 今天 / 未来 */
.milestone { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.milestone > div {
  border: 1px solid rgba(255, 255, 255, .14);
  background: rgba(255, 255, 255, .03);
  border-radius: var(--radius);
  padding: 26px;
}
.milestone h4 { font-size: 16px; color: #fff; margin: 0 0 12px; letter-spacing: .06em; }
.milestone h4::after { content: ""; display: block; width: 24px; height: 2px; background: var(--red); margin-top: 10px; }
.milestone p { margin: 0; font-size: 13.5px; color: #a9b2bd; line-height: 1.85; }

.reveal { opacity: 0; transform: translateY(14px); transition: .5s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 1100px) {
  .prod-head { grid-template-columns: 1fr; gap: 24px; }
  .prod-figure { max-width: 420px; }
  .split { gap: 36px; }
  .with-side { grid-template-columns: 1fr; gap: 28px; }
  .side-nav { position: static; border-left: 0; display: flex; flex-wrap: wrap; gap: 6px; padding-bottom: 8px; border-bottom: 1px solid var(--line); }
  .side-nav h5 { width: 100%; margin: 0 0 8px; }
  .side-nav a { border: 1px solid var(--line); border-radius: 2px; padding: 6px 12px; font-size: 12.5px; margin: 0; }
  .side-nav a.on { border-color: var(--red); background: var(--red-soft); }
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; gap: 32px; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 900px) {
  :root { --head-h: 62px; }
  .nav {
    position: fixed; inset: calc(var(--head-h) + 38px) 0 auto 0;
    background: #fff; flex-direction: column; align-items: stretch;
    padding: 10px 16px 20px; border-bottom: 1px solid var(--line);
    box-shadow: 0 12px 24px rgba(0, 0, 0, .08);
    display: none; gap: 0; max-height: calc(100vh - 100px); overflow: auto;
  }
  .nav.open { display: flex; }
  .nav > a { padding: 13px 8px; border-bottom: 1px solid #f1f3f5; font-size: 15px; }
  .nav > a.active::after { display: none; }
  .nav-toggle { display: block; }
  .header-tel { display: none; }
  .grid--3, .grid--2 { grid-template-columns: repeat(2, 1fr); }
  .industries { grid-template-columns: repeat(2, 1fr); }
  .stats .wrap { grid-template-columns: repeat(2, 1fr); }
  .hero h1 { font-size: 32px; }
  .hero { min-height: 480px; }
  .hero .wrap { padding-top: 64px; padding-bottom: 64px; }
  .section { padding: 52px 0; }
  .sec-head h2 { font-size: 24px; }
  .split { grid-template-columns: 1fr; }
  .speclist { grid-template-columns: 1fr; }
  .pagehead { padding: 40px 0 34px; }
  .pagehead h1 { font-size: 26px; }
  .cta .wrap { flex-direction: column; align-items: flex-start; }
  .milestone { grid-template-columns: 1fr; gap: 16px; }
}

@media (max-width: 620px) {
  .wrap { padding: 0 18px; }
  .topbar { font-size: 11.5px; }
  .topbar .wrap { height: 34px; gap: 10px; }
  .topbar .wrap > div:first-child { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
  .topbar a { white-space: nowrap; }
  .site-header .wrap { gap: 10px; }
  .logo { gap: 8px; }
  .logo-mark { width: 34px; height: 34px; flex: 0 0 34px; font-size: 15px; }
  .logo-txt strong { font-size: 15px; }
  .logo-txt span { font-size: 8.5px; letter-spacing: .08em; }
  .header-cta { gap: 8px; }
  .header-cta .btn--sm { height: 36px; padding: 0 12px; font-size: 12.5px; }
  .nav-toggle { width: 38px; height: 38px; flex: 0 0 38px; }
  .grid--3, .grid--2, .grid--4 { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr; gap: 28px; }
  .hero h1 { font-size: 26px; }
  .stats b { font-size: 26px; }
  .stats .item { padding: 24px 18px; }
  .topbar .tb-right { gap: 12px; }
  .topbar .hide-sm { display: none; }
  .industries { grid-template-columns: 1fr 1fr; }
  .industries div { padding: 18px 10px; font-size: 13px; }
  .prod-head h2 { font-size: 20px; }
  .table-wrap { max-height: 460px; }
}