/* ==========================================================================
   HAOEN × wrjsjs.com — 全站设计系统
   风格定位：工业精密 + 实验室蓝调，与参考站（橙白商务风）完全区隔
   ========================================================================== */

:root {
  /* 主色：深海军蓝（工业/实验室感） */
  --ink-900: #0A1628;
  --ink-800: #0F1E35;
  --ink-700: #16263F;
  --ink-600: #1E3350;
  --ink-500: #2A4463;

  /* 强调色：青蓝（科技/检测仪器感） */
  --acc-600: #0B6FA4;
  --acc-500: #1089C4;
  --acc-400: #35A6DC;
  --acc-300: #6FC4E8;
  --acc-100: #D6EEF9;
  --acc-50:  #EEF8FD;

  /* 辅助：琥珀橙（制造/工程/警示，仅作点缀） */
  --amb-600: #C2691B;
  --amb-500: #E08A2E;
  --amb-100: #FCEBD8;

  --paper: #FFFFFF;
  --surface: #F5F8FB;
  --surface-2: #EDF3F8;
  --line: #DCE7F0;
  --line-soft: #EAF1F7;

  --text: #16233A;
  --text-2: #4A5C75;
  --text-3: #7D8FA6;
  --text-inv: #FFFFFF;

  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 16px;
  --radius-xl: 22px;

  --shadow-sm: 0 1px 2px rgba(10,22,40,.05), 0 2px 8px rgba(10,22,40,.04);
  --shadow: 0 2px 4px rgba(10,22,40,.05), 0 8px 24px rgba(10,22,40,.07);
  --shadow-lg: 0 8px 16px rgba(10,22,40,.07), 0 24px 60px rgba(10,22,40,.10);

  --maxw: 1280px;
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
          "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--paper);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font: inherit; cursor: pointer; border: none; background: none; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }

/* ---------- Header ---------- */
.site-hd {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line-soft);
}
.hd-in {
  max-width: var(--maxw); margin: 0 auto; padding: 0 28px;
  height: 72px; display: flex; align-items: center; gap: 28px;
}
.brand { display: flex; align-items: center; gap: 11px; flex-shrink: 0; }
.brand-mark {
  width: 38px; height: 38px; border-radius: 9px;
  background: linear-gradient(145deg, var(--ink-700), var(--ink-900));
  display: grid; place-items: center; flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(10,22,40,.18);
}
.brand-mark span {
  font-size: 15px; font-weight: 700; color: var(--acc-300);
  letter-spacing: .5px; font-family: var(--mono);
}
.brand-txt strong {
  display: block; font-size: 17px; font-weight: 700; letter-spacing: -.2px;
  color: var(--ink-900); line-height: 1.15;
}
.brand-txt em {
  display: block; font-size: 10.5px; font-style: normal; color: var(--text-3);
  letter-spacing: .8px; text-transform: uppercase; margin-top: 1px;
}

.nav { display: flex; align-items: center; gap: 4px; }
.nav > a {
  padding: 8px 13px; border-radius: var(--radius-sm);
  font-size: 14.5px; font-weight: 500; color: var(--text-2);
  transition: color .16s, background .16s;
  white-space: nowrap;
}
.nav > a:hover { color: var(--acc-600); background: var(--acc-50); }
.nav > a.on { color: var(--acc-600); background: var(--acc-50); }

.hd-cta {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 10px 19px; border-radius: var(--radius-sm);
  background: var(--ink-800); color: #fff; font-size: 14.5px; font-weight: 500;
  transition: background .16s, transform .16s;
  white-space: nowrap;
}
.hd-cta:hover { background: var(--acc-600); transform: translateY(-1px); }


/* ---------- Dropdown ---------- */
.has-dd { position: relative; }
.dd {
  position: absolute; top: calc(100% + 10px); left: 0;
  min-width: 640px; padding: 20px;
  background: var(--paper); border: 1px solid var(--line);
  border-radius: var(--radius-lg); box-shadow: var(--shadow-lg);
  opacity: 0; visibility: hidden; transform: translateY(-6px);
  transition: opacity .18s, transform .18s, visibility .18s;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px 8px;
}
.has-dd:hover .dd { opacity: 1; visibility: visible; transform: translateY(0); }
.dd a {
  display: block; padding: 9px 12px; border-radius: var(--radius-sm);
  font-size: 14px; color: var(--text-2); transition: all .14s;
}
.dd a:hover { background: var(--acc-50); color: var(--acc-600); }
.dd a b { display: block; font-weight: 500; color: var(--text); font-size: 14px; }
.dd a:hover b { color: var(--acc-600); }
.dd a span { font-size: 12.5px; color: var(--text-3); }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(1100px 520px at 78% -8%, rgba(53,166,220,.16), transparent 62%),
    radial-gradient(760px 420px at 8% 108%, rgba(11,111,164,.10), transparent 60%),
    linear-gradient(165deg, var(--ink-900) 0%, var(--ink-700) 58%, var(--ink-600) 100%);
  color: #fff;
}
.hero::after {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.032) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.032) 1px, transparent 1px);
  background-size: 58px 58px;
  mask-image: radial-gradient(1000px 620px at 50% 34%, #000 20%, transparent 78%);
  pointer-events: none;
}
.hero-in {
  position: relative; z-index: 2;
  max-width: var(--maxw); margin: 0 auto; padding: 84px 28px 76px;
  display: grid; grid-template-columns: 1.12fr .88fr; gap: 60px; align-items: center;
}
.hero h1 {
  font-size: clamp(32px, 4.1vw, 51px); font-weight: 700;
  line-height: 1.14; letter-spacing: -1.1px; margin-bottom: 22px;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(96deg, var(--acc-300), var(--acc-400) 60%, #8FD4F0);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero p.lead {
  font-size: 17.5px; line-height: 1.72; color: rgba(255,255,255,.80);
  max-width: 620px; margin-bottom: 30px;
}
.hero-tags { display: flex; flex-wrap: wrap; gap: 9px; margin-bottom: 34px; }
.hero-tags span {
  padding: 6px 13px; border-radius: 100px; font-size: 13px;
  background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.14);
  color: rgba(255,255,255,.90);
}
.hero-btns { display: flex; flex-wrap: wrap; gap: 13px; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 25px; border-radius: var(--radius);
  font-size: 15px; font-weight: 500; transition: all .18s;
}
.btn-p { background: var(--acc-500); color: #fff; box-shadow: 0 3px 12px rgba(16,137,196,.32); }
.btn-p:hover { background: var(--acc-400); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(16,137,196,.42); }
.btn-g { border: 1px solid rgba(255,255,255,.26); color: #fff; }
.btn-g:hover { background: rgba(255,255,255,.10); border-color: rgba(255,255,255,.45); }

.hero-stats {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px;
  background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.14);
  border-radius: var(--radius-lg); overflow: hidden;
}
.hero-stats div { background: rgba(10,22,40,.42); padding: 26px 22px; }
.hero-stats b {
  display: block; font-size: 33px; font-weight: 700; letter-spacing: -1px;
  color: #fff; line-height: 1.1;
}
.hero-stats b i { font-style: normal; font-size: 19px; color: var(--acc-300); }
.hero-stats span { font-size: 13px; color: rgba(255,255,255,.66); }

/* ---------- Section ---------- */
.sec { padding: 76px 0; }
.sec-alt { background: var(--surface); }
.sec-hd { margin-bottom: 44px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12.5px; font-weight: 500; letter-spacing: 1.4px;
  text-transform: uppercase; color: var(--acc-600); margin-bottom: 13px;
}
.eyebrow::before {
  content: ""; width: 22px; height: 2px; background: var(--acc-500); border-radius: 2px;
}
.sec-hd h2 {
  font-size: clamp(25px, 3vw, 35px); font-weight: 700;
  letter-spacing: -.7px; line-height: 1.24; color: var(--ink-900);
}
.sec-hd p { font-size: 16.5px; color: var(--text-2); margin-top: 12px; max-width: 700px; }

/* ---------- Cards ---------- */
.grid { display: grid; gap: 20px; }
.g2 { grid-template-columns: repeat(2, 1fr); }
.g3 { grid-template-columns: repeat(3, 1fr); }
.g4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--paper); border: 1px solid var(--line);
  border-radius: var(--radius-lg); overflow: hidden;
  transition: transform .2s, box-shadow .2s, border-color .2s;
  display: flex; flex-direction: column;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--acc-300); }
.card-img { position: relative; aspect-ratio: 4/3; background: var(--surface-2); overflow: hidden; }
.card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.card:hover .card-img img { transform: scale(1.05); }
.card-bd { padding: 20px 21px 22px; flex: 1; display: flex; flex-direction: column; }
.card-bd h3 { font-size: 17.5px; font-weight: 600; color: var(--ink-900); line-height: 1.4; margin-bottom: 9px; }
.card-bd p { font-size: 14.5px; color: var(--text-2); line-height: 1.65; flex: 1; }
.card-ft {
  margin-top: 16px; padding-top: 14px; border-top: 1px solid var(--line-soft);
  display: flex; align-items: center; justify-content: space-between;
  font-size: 13.5px; color: var(--acc-600); font-weight: 500;
}
.card-ft span { color: var(--text-3); font-weight: 400; }

.cat-card {
  position: relative; display: block; overflow: hidden;
  border-radius: var(--radius-lg); background: var(--ink-800);
  aspect-ratio: 4/3; color: #fff;
}
.cat-card img {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; opacity: .58; transition: transform .55s, opacity .35s;
}
.cat-card:hover img { transform: scale(1.07); opacity: .42; }
.cat-card::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 32%, rgba(10,22,40,.92) 100%);
}
.cat-card div {
  position: absolute; z-index: 2; left: 0; right: 0; bottom: 0;
  padding: 24px 22px;
}
.cat-card h3 { font-size: 18px; font-weight: 600; line-height: 1.35; margin-bottom: 5px; }
.cat-card p { font-size: 13px; color: rgba(255,255,255,.66); line-height: 1.5; }

/* ---------- Feature / capability ---------- */
.cap {
  display: flex; gap: 15px; padding: 22px;
  background: var(--paper); border: 1px solid var(--line);
  border-radius: var(--radius-lg); transition: all .2s;
}
.cap:hover { border-color: var(--acc-300); box-shadow: var(--shadow); }
.cap-ico {
  width: 44px; height: 44px; border-radius: var(--radius); flex-shrink: 0;
  background: var(--acc-50); color: var(--acc-600);
  display: grid; place-items: center;
}
.cap h4 { font-size: 16px; font-weight: 600; color: var(--ink-900); margin-bottom: 6px; }
.cap p { font-size: 14px; color: var(--text-2); line-height: 1.62; }

/* ---------- Process ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; }
.step { position: relative; padding: 26px 22px 26px 0; }
.step-n {
  font-family: var(--mono); font-size: 13px; font-weight: 600;
  color: var(--acc-500); letter-spacing: 1px; margin-bottom: 11px;
  display: flex; align-items: center; gap: 9px;
}
.step-n::after { content: ""; flex: 1; height: 1px; background: var(--line); }
.step h4 { font-size: 16.5px; font-weight: 600; color: var(--ink-900); margin-bottom: 7px; }
.step p { font-size: 14px; color: var(--text-2); line-height: 1.62; }

/* ---------- Table ---------- */
.tbl-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--paper); }
table.spec { width: 100%; border-collapse: collapse; font-size: 14.5px; min-width: 560px; }
table.spec th, table.spec td { padding: 12px 18px; text-align: left; border-bottom: 1px solid var(--line-soft); }
table.spec th { background: var(--surface); color: var(--ink-800); font-weight: 600; font-size: 14px; white-space: nowrap; }
table.spec tr:last-child td { border-bottom: none; }
table.spec td:first-child { color: var(--text-2); font-weight: 500; width: 32%; }
table.spec tbody tr:hover { background: var(--acc-50); }

/* ---------- News ---------- */
.news-item {
  display: grid; grid-template-columns: 210px 1fr; gap: 24px;
  padding: 22px 0; border-bottom: 1px solid var(--line-soft);
  transition: background .18s;
}
.news-item:hover { background: var(--surface); }
.news-item .thumb {
  aspect-ratio: 16/10; border-radius: var(--radius); overflow: hidden;
  background: var(--surface-2);
}
.news-item .thumb img { width: 100%; height: 100%; object-fit: cover; }
.news-meta { display: flex; align-items: center; gap: 11px; margin-bottom: 9px; font-size: 12.5px; }
.tag {
  padding: 3px 10px; border-radius: 100px; font-size: 11.5px; font-weight: 500;
  background: var(--acc-50); color: var(--acc-600); border: 1px solid var(--acc-100);
}
.tag.alt { background: var(--amb-100); color: var(--amb-600); border-color: #F3DCC0; }
.news-meta time { color: var(--text-3); }
.news-item h3 { font-size: 19px; font-weight: 600; color: var(--ink-900); line-height: 1.42; margin-bottom: 8px; }
.news-item:hover h3 { color: var(--acc-600); }
.news-item p { font-size: 14.5px; color: var(--text-2); line-height: 1.65; }

/* ---------- Article ---------- */
.art-hd { padding: 44px 0 30px; border-bottom: 1px solid var(--line-soft); }
.art-hd h1 {
  font-size: clamp(26px, 3.4vw, 40px); font-weight: 700; line-height: 1.22;
  letter-spacing: -.8px; color: var(--ink-900); margin: 14px 0 16px;
}
.art-hd .lede { font-size: 17px; color: var(--text-2); line-height: 1.72; max-width: 780px; }
.art-body { padding: 34px 0 20px; max-width: 860px; }
.art-body h2 {
  font-size: 25px; font-weight: 650; color: var(--ink-900);
  margin: 40px 0 15px; line-height: 1.32; letter-spacing: -.4px;
  padding-left: 15px; border-left: 3px solid var(--acc-500);
}
.art-body h3 { font-size: 19.5px; font-weight: 600; color: var(--ink-900); margin: 28px 0 11px; }
.art-body p { font-size: 16.5px; line-height: 1.82; color: var(--text); margin-bottom: 17px; }
.art-body ul, .art-body ol { margin: 0 0 20px; padding-left: 4px; }
.art-body li {
  font-size: 16px; line-height: 1.78; color: var(--text-2);
  padding-left: 26px; position: relative; margin-bottom: 9px;
}
.art-body ul li::before {
  content: ""; position: absolute; left: 8px; top: 11px;
  width: 6px; height: 6px; border-radius: 2px; background: var(--acc-400);
}
.art-body ol { counter-reset: n; }
.art-body ol li { counter-increment: n; }
.art-body ol li::before {
  content: counter(n); position: absolute; left: 0; top: 3px;
  width: 19px; height: 19px; border-radius: 50%;
  background: var(--acc-50); color: var(--acc-600);
  font-size: 11.5px; font-weight: 600; display: grid; place-items: center;
}
.art-body img { border-radius: var(--radius); margin: 26px 0; width: 100%; }
.art-body figure { margin: 28px 0; }
.art-body figcaption {
  font-size: 13.5px; color: var(--text-3); text-align: center; margin-top: 9px;
}
.art-body strong { color: var(--ink-900); font-weight: 600; }
.art-body blockquote {
  border-left: 3px solid var(--acc-400); background: var(--acc-50);
  padding: 18px 22px; border-radius: 0 var(--radius) var(--radius) 0;
  margin: 24px 0; font-size: 16px; color: var(--text-2);
}

/* ---------- CTA band ---------- */
.cta-band {
  background: linear-gradient(135deg, var(--ink-800), var(--ink-600));
  color: #fff; padding: 58px 0; position: relative; overflow: hidden;
}
.cta-band::after {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(620px 300px at 85% 20%, rgba(53,166,220,.24), transparent 68%);
}
.cta-in {
  position: relative; z-index: 2; max-width: var(--maxw); margin: 0 auto; padding: 0 28px;
  display: flex; align-items: center; justify-content: space-between; gap: 36px; flex-wrap: wrap;
}
.cta-in h2 { font-size: clamp(23px, 2.7vw, 31px); font-weight: 700; letter-spacing: -.6px; margin-bottom: 9px; }
.cta-in p { font-size: 16px; color: rgba(255,255,255,.72); max-width: 600px; }
.cta-btns { display: flex; gap: 12px; flex-wrap: wrap; }

/* ---------- Footer ---------- */
.site-ft { background: var(--ink-900); color: rgba(255,255,255,.62); font-size: 14px; }
.ft-in {
  max-width: var(--maxw); margin: 0 auto; padding: 56px 28px 0;
  display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 40px;
}
.ft-in h5 {
  font-size: 13px; font-weight: 600; color: #fff; text-transform: uppercase;
  letter-spacing: 1.1px; margin-bottom: 17px;
}
.ft-in a { display: block; padding: 4px 0; transition: color .16s; }
.ft-in a:hover { color: var(--acc-300); }
.ft-in .brand-txt strong { color: #fff; }
.ft-in .brand-txt em { color: rgba(255,255,255,.45); }
.ft-note { font-size: 13.5px; line-height: 1.72; margin-top: 15px; max-width: 330px; }
.ft-bt {
  max-width: var(--maxw); margin: 0 auto; padding: 22px 28px;
  border-top: 1px solid rgba(255,255,255,.09);
  display: flex; align-items: center; justify-content: space-between;
  gap: 18px; flex-wrap: wrap; font-size: 13px;
}
.ft-bt a { display: inline; }

/* ---------- Breadcrumb ---------- */
.crumb { font-size: 13.5px; color: var(--text-3); padding: 18px 0 0; }
.crumb a:hover { color: var(--acc-600); }
.crumb span { margin: 0 7px; opacity: .5; }

/* ---------- Page hero (inner) ---------- */
.phero {
  background: linear-gradient(140deg, var(--ink-900), var(--ink-700));
  color: #fff; padding: 54px 0 50px; position: relative; overflow: hidden;
}
.phero::after {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(700px 340px at 80% 0%, rgba(53,166,220,.20), transparent 66%);
}
.phero .wrap { position: relative; z-index: 2; }
.phero h1 { font-size: clamp(27px, 3.5vw, 42px); font-weight: 700; letter-spacing: -.8px; margin-bottom: 14px; }
.phero p { font-size: 16.5px; color: rgba(255,255,255,.76); max-width: 760px; line-height: 1.7; }

/* ---------- Filters ---------- */
.filters { display: flex; flex-wrap: wrap; gap: 9px; margin-bottom: 30px; }
.filters a {
  padding: 7px 15px; border-radius: 100px; font-size: 13.5px;
  border: 1px solid var(--line); background: var(--paper);
  color: var(--text-2); transition: all .16s;
}
.filters a:hover, .filters a.on {
  background: var(--ink-800); border-color: var(--ink-800); color: #fff;
}

/* ---------- Product detail ---------- */
.pd-top { display: grid; grid-template-columns: 1fr 1fr; gap: 46px; margin-bottom: 44px; }
.pd-gallery { border-radius: var(--radius-lg); overflow: hidden; background: var(--surface-2); border: 1px solid var(--line); }
.pd-gallery img { width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.pd-info h1 { font-size: clamp(24px, 3vw, 34px); font-weight: 700; line-height: 1.25; letter-spacing: -.6px; color: var(--ink-900); margin-bottom: 16px; }
.pd-info .spec-kv { margin: 22px 0; }
.pd-info .spec-kv div {
  display: flex; gap: 12px; padding: 9px 0; border-bottom: 1px dashed var(--line);
  font-size: 14.5px;
}
.pd-info .spec-kv b { color: var(--text-3); font-weight: 500; min-width: 128px; }
.pd-info .spec-kv span { color: var(--text); }

.pd-thumbs { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; margin-top: 12px; }
.pd-thumbs a { border-radius: var(--radius-sm); overflow: hidden; border: 1px solid var(--line); aspect-ratio: 1; }
.pd-thumbs img { width: 100%; height: 100%; object-fit: cover; }

/* ---------- Contact ---------- */
.ct-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 44px; align-items: start; }
.ct-card {
  background: var(--paper); border: 1px solid var(--line);
  border-radius: var(--radius-lg); padding: 28px;
}
.ct-row { display: flex; gap: 15px; padding: 17px 0; border-bottom: 1px solid var(--line-soft); }
.ct-row:last-child { border-bottom: none; }
.ct-row .ic {
  width: 40px; height: 40px; border-radius: var(--radius-sm); flex-shrink: 0;
  background: var(--acc-50); color: var(--acc-600); display: grid; place-items: center;
}
.ct-row b { display: block; font-size: 14px; color: var(--ink-900); margin-bottom: 3px; }
.ct-row span { font-size: 14.5px; color: var(--text-2); }

form.ct-form { display: grid; gap: 15px; }
form.ct-form .fr { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; }
form.ct-form label { display: block; font-size: 13.5px; color: var(--text-2); margin-bottom: 6px; }
form.ct-form input, form.ct-form textarea, form.ct-form select {
  width: 100%; padding: 11px 14px; font-size: 15px; font-family: inherit;
  border: 1px solid var(--line); border-radius: var(--radius-sm);
  background: var(--paper); color: var(--text); transition: border-color .16s;
}
form.ct-form input:focus, form.ct-form textarea:focus, form.ct-form select:focus {
  outline: none; border-color: var(--acc-400);
}
form.ct-form textarea { min-height: 128px; resize: vertical; }
form.ct-form .sub {
  padding: 13px 26px; border-radius: var(--radius); background: var(--ink-800);
  color: #fff; font-size: 15px; font-weight: 500; transition: background .16s;
}
form.ct-form .sub:hover { background: var(--acc-600); }

/* ---------- Responsive ---------- */
@media (max-width: 1080px) {
  .hero-in { grid-template-columns: 1fr; gap: 44px; }
  .g4 { grid-template-columns: repeat(2, 1fr); }
  .ft-in { grid-template-columns: 1fr 1fr; }
  .dd { min-width: 460px; grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 860px) {
  .g2, .g3, .g4 { grid-template-columns: 1fr; }
  .news-item { grid-template-columns: 1fr; gap: 16px; }
  .pd-top, .ct-grid { grid-template-columns: 1fr; gap: 32px; }
  .steps { grid-template-columns: 1fr; }
  .ft-in { grid-template-columns: 1fr; gap: 32px; }
  .wrap, .hd-in, .hero-in, .cta-in, .ft-in, .ft-bt { padding-left: 18px; padding-right: 18px; }
  .sec { padding: 54px 0; }
  .hero-in { padding: 58px 18px 54px; }
  .pd-thumbs { grid-template-columns: repeat(3, 1fr); }
}

/* ================= 语言切换 + 移动端导航 ================= */
.hd-right { display: flex; align-items: center; gap: 12px; margin-left: auto; }

.lang-sw {
  padding: 6px 13px; border: 1px solid var(--line); border-radius: 100px;
  font-size: 13px; font-weight: 500; color: var(--text-2);
  transition: all .16s; white-space: nowrap;
}
.lang-sw:hover { border-color: var(--acc-400); color: var(--acc-600); background: var(--acc-50); }

.caret { opacity: .5; font-size: 11px; margin-left: 2px; }

/* 下拉分组标题 */
.dd-grp { display: flex; flex-direction: column; }
.dd-ttl {
  font-size: 11px; font-weight: 600; letter-spacing: 1px; text-transform: uppercase;
  color: var(--text-3); padding: 8px 12px 5px; margin-bottom: 2px;
  border-bottom: 1px solid var(--line-soft);
}
.dd-grp + .dd-grp { margin-top: 10px; }

/* 移动端抽屉导航 */
.mnav {
  display: none; flex-direction: column;
  border-top: 1px solid var(--line-soft); background: var(--paper);
  padding: 8px 18px 16px;
}
.mnav.open { display: flex; }
.mnav a {
  padding: 13px 4px; font-size: 15.5px; font-weight: 500; color: var(--text);
  border-bottom: 1px solid var(--line-soft);
}
.mnav a:last-child { border-bottom: none; }
.mnav a:hover { color: var(--acc-600); }

/* 汉堡按钮动效 */
.burger.on svg { transform: rotate(90deg); transition: transform .22s; }
.burger svg { transition: transform .22s; }

@media (max-width: 860px) {
  .nav { display: none; }
  .hd-cta { display: none; }
  .burger { display: grid; place-items: center; width: 40px; height: 40px; }
  .mnav { display: none; }
  .lang-sw { display: inline-flex; }
  /* 汉堡只用于开抽屉 */
  .burger { display: grid; }
}
@media (min-width: 861px) {
    .mnav { display: none !important; }
}