/* ============================================================
   洛热科技 · 站点样式
   Palette: ink #0B1621 / blue #0868D1 / orange #FF8E11
   ============================================================ */

:root {
  --ink: #0b1621;
  --ink-2: #24333f;
  --ink-3: #465866;
  --muted: #6b7c89;
  --line: #e3e8ec;
  --line-2: #eef1f4;
  --paper: #ffffff;
  --paper-2: #f5f7f8;
  --paper-3: #eef2f4;
  --blue: #0868d1;
  --blue-2: #0b7be0;
  --blue-3: #e8f2fd;
  --orange: #ff8e11;
  --orange-2: #e97b06;
  --navy: #0b1621;
  --navy-2: #101f2c;
  --radius: 3px;
  --shadow-1: 0 1px 2px rgba(11, 22, 33, .04), 0 8px 24px -12px rgba(11, 22, 33, .12);
  --shadow-2: 0 2px 6px rgba(11, 22, 33, .06), 0 24px 48px -24px rgba(11, 22, 33, .22);
  --font: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "HarmonyOS Sans SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", "SFMono-Regular", ui-monospace, Menlo, Consolas, monospace;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink-2);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; }
::selection { background: rgba(8, 104, 209, .16); }

.wrap { width: 100%; max-width: 1264px; margin: 0 auto; padding: 0 40px; }

/* ---------------- ?---------------- */
.h1, .h2, .h3, .h4 { margin: 0; color: var(--ink); font-weight: 700; letter-spacing: -.018em; text-wrap: balance; }
.h1 { font-size: clamp(2.4rem, 5.2vw, 4.05rem); line-height: 1.12; }
.h2 { font-size: clamp(1.75rem, 3.05vw, 2.65rem); line-height: 1.22; }
.h3 { font-size: clamp(1.2rem, 1.7vw, 1.45rem); line-height: 1.4; }
.h4 { font-size: 1.05rem; line-height: 1.5; }

.lead { margin: 20px 0 0; font-size: 1.06rem; line-height: 1.85; color: var(--ink-3); max-width: 64ch; }
.lead.lg { font-size: 1.15rem; max-width: 58ch; }
p { margin: 0 0 1.1em; }
p:last-child { margin-bottom: 0; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 12px;
  font-size: .72rem; font-weight: 600; letter-spacing: .16em;
  text-transform: uppercase; color: var(--blue);
  margin-bottom: 18px;
}
.eyebrow::before { content: ""; width: 22px; height: 1px; background: var(--orange); }
.eyebrow-no { font-family: var(--mono); font-size: .7rem; color: var(--orange); letter-spacing: .08em; }

.num { font-variant-numeric: tabular-nums; font-feature-settings: "tnum"; }

/* ---------------- 按钮 ---------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  height: 46px; padding: 0 22px; border-radius: var(--radius);
  font-size: .93rem; font-weight: 600; letter-spacing: .01em;
  border: 1px solid transparent; cursor: pointer;
  transition: background .28s var(--ease), color .28s var(--ease), border-color .28s var(--ease), transform .28s var(--ease);
  white-space: nowrap;
}
.btn-lg { height: 54px; padding: 0 28px; font-size: 1rem; }
.btn-solid { background: var(--ink); color: #fff; }
.btn-solid:hover { background: var(--blue); }
.btn-accent { background: var(--orange); color: #221000; }
.btn-accent:hover { background: #ffa033; transform: translateY(-1px); }
.btn-ghost { border-color: rgba(255, 255, 255, .32); color: #fff; }
.btn-ghost:hover { background: rgba(255, 255, 255, .1); border-color: rgba(255, 255, 255, .6); }
.btn-outline { border-color: var(--line); color: var(--ink); }
.btn-outline:hover { border-color: var(--blue); color: var(--blue); }
.btn-block { width: 100%; }

.link-arrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: .93rem; font-weight: 600; color: var(--blue);
}
.link-arrow .ico-arrow { transition: transform .3s var(--ease); }
.link-arrow:hover .ico-arrow { transform: translateX(4px); }
.ico-arrow { flex: none; }

/* ---------------- 头部 ---------------- */
.site-head {
  position: sticky; top: 0; z-index: 90;
  background: rgba(255, 255, 255, .86);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s var(--ease), background .3s var(--ease);
}
.site-head.is-stuck { border-bottom-color: var(--line); background: rgba(255, 255, 255, .94); }
.head-inner { display: flex; align-items: center; gap: 28px; height: 78px; }

.brand { display: flex; align-items: center; flex: none; }
.brand-logo { height: 30px; width: auto; }

.nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav-item { position: relative; }
.nav-link {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 10px 12px; font-size: .92rem; font-weight: 500; color: var(--ink-2);
  border-radius: var(--radius); transition: color .24s var(--ease), background .24s var(--ease);
}
.nav-link:hover, .nav-link.is-active { color: var(--blue); background: var(--blue-3); }
.ico-caret { opacity: .55; transition: transform .25s var(--ease); }
.nav-item.has-drop:hover .ico-caret { transform: rotate(180deg); }

.nav-drop {
  position: absolute; top: calc(100% + 6px); left: 0; min-width: 232px;
  background: #fff; border: 1px solid var(--line); border-radius: 4px;
  box-shadow: var(--shadow-2); padding: 8px;
  opacity: 0; visibility: hidden; transform: translateY(-6px);
  transition: opacity .24s var(--ease), transform .24s var(--ease), visibility .24s;
}
.nav-item.has-drop:hover .nav-drop { opacity: 1; visibility: visible; transform: translateY(0); }
.nav-drop a {
  display: block; padding: 10px 12px; font-size: .9rem; color: var(--ink-2);
  border-radius: 3px; transition: background .2s, color .2s;
}
.nav-drop a:hover { background: var(--paper-2); color: var(--blue); }

.head-right { display: flex; align-items: center; gap: 14px; flex: none; }
.lang {
  font-family: var(--mono); font-size: .78rem; letter-spacing: .08em;
  color: var(--muted); padding: 6px 8px; border: 1px solid var(--line); border-radius: 2px;
  transition: color .2s, border-color .2s;
}
.lang:hover { color: var(--blue); border-color: var(--blue); }
.head-cta { height: 40px; padding: 0 18px; font-size: .88rem; }

.burger { display: none; width: 42px; height: 42px; background: none; border: 1px solid var(--line); border-radius: 3px; padding: 0; position: relative; }
.burger span { position: absolute; left: 12px; width: 18px; height: 1.5px; background: var(--ink); transition: transform .3s var(--ease), opacity .3s; }
.burger span:nth-child(1) { top: 15px; }
.burger span:nth-child(2) { top: 20.5px; }
.burger span:nth-child(3) { top: 26px; }
body.nav-open .burger span:nth-child(1) { transform: translateY(5.5px) rotate(45deg); }
body.nav-open .burger span:nth-child(2) { opacity: 0; }
body.nav-open .burger span:nth-child(3) { transform: translateY(-5.5px) rotate(-45deg); }
.nav-mobile-extra { display: none; }

/* ---------------- 首页 Hero ---------------- */
.hero {
  position: relative; background: var(--navy); color: #fff;
  min-height: min(88vh, 820px); display: flex; flex-direction: column; justify-content: flex-end;
  overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; }
.hero-bg img { width: 100%; height: 100%; object-fit: cover; opacity: .5; filter: saturate(.75) contrast(1.05); transform: scale(1.02); }
.hero-bg::after {
  content: ""; position: absolute; inset: 0;
  background:
    linear-gradient(180deg, rgba(11, 22, 33, .82) 0%, rgba(11, 22, 33, .55) 42%, rgba(11, 22, 33, .9) 100%),
    linear-gradient(90deg, rgba(11, 22, 33, .92) 0%, rgba(11, 22, 33, .35) 60%, rgba(11, 22, 33, .5) 100%);
}
.hero-inner { position: relative; padding-top: 140px; padding-bottom: 56px; }
.hero .eyebrow { color: #8fc4f5; }
.hero h1 { color: #fff; margin: 0; max-width: 15ch; }
.hero h1 .accent { color: var(--orange); }
.hero-sub {
  margin: 26px 0 0; max-width: 54ch; font-size: 1.12rem; line-height: 1.85;
  color: rgba(255, 255, 255, .74);
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px; }
.hero-stats {
  position: relative; border-top: 1px solid rgba(255, 255, 255, .14);
  margin-top: 68px; padding-top: 0;
  display: grid; grid-template-columns: repeat(4, 1fr);
}
.hero-stat { padding: 26px 0 4px; }
.hero-stat + .hero-stat { padding-left: 32px; border-left: 1px solid rgba(255, 255, 255, .11); }
.hero-stat b { display: block; font-size: 2.05rem; font-weight: 700; letter-spacing: -.02em; color: #fff; line-height: 1.1; }
.hero-stat b .unit { font-size: .95rem; font-weight: 500; color: rgba(255, 255, 255, .5); margin-left: 4px; letter-spacing: 0; }
.hero-stat > span { display: block; margin-top: 6px; font-size: .82rem; color: rgba(255, 255, 255, .58); letter-spacing: .02em; }

/* ---------------- 通用 section ---------------- */
.sec { padding: 104px 0; }
.sec-sm { padding: 72px 0; }
.sec-tint { background: var(--paper-2); }
.sec-dark { background: var(--navy); color: rgba(255, 255, 255, .72); }
.sec-dark .h2, .sec-dark .h3 { color: #fff; }
.sec-dark .lead { color: rgba(255, 255, 255, .62); }
.sec-dark .eyebrow { color: #8fc4f5; }
.sec-dark .eyebrow::before { background: var(--orange); }

.sec-head { max-width: 780px; margin-bottom: 56px; }
.sec-head.is-center { margin-left: auto; margin-right: auto; text-align: center; }
.sec-head.is-center .eyebrow { justify-content: center; }
.sec-head .h2 { margin-top: 2px; }
.sec-head-row { display: flex; align-items: flex-end; justify-content: space-between; gap: 40px; margin-bottom: 52px; }
.sec-head-row .sec-head { margin-bottom: 0; }

/* ---------------- ?---------------- */
.svc-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.svc-card {
  background: #fff; padding: 38px 32px 34px; position: relative;
  display: flex; flex-direction: column; min-height: 340px;
  transition: background .3s var(--ease);
}
.svc-card::before {
  content: ""; position: absolute; left: 0; top: 0; height: 2px; width: 0;
  background: var(--orange); transition: width .45s var(--ease);
}
.svc-card:hover::before { width: 100%; }
.svc-card:hover { background: #fbfcfd; }
.svc-no { font-family: var(--mono); font-size: .74rem; letter-spacing: .14em; color: var(--orange); }
.svc-card .h3 { margin: 14px 0 0; }
.svc-en { display: block; margin-top: 6px; font-size: .72rem; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); }
.svc-desc { margin: 18px 0 0; font-size: .94rem; line-height: 1.8; color: var(--ink-3); flex: 1; }
.svc-tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 22px 0 24px; }
.tag {
  font-size: .72rem; letter-spacing: .04em; color: var(--ink-3);
  background: var(--paper-2); border: 1px solid var(--line-2);
  padding: 4px 9px; border-radius: 2px;
}

/* ---------------- ?---------------- */
.prob-table { width: 100%; border-collapse: collapse; margin-top: 8px; }
.prob-table th {
  text-align: left; font-size: .76rem; font-weight: 600; letter-spacing: .12em;
  text-transform: uppercase; color: var(--muted); padding: 0 24px 14px 0;
  border-bottom: 1px solid var(--ink);
}
.prob-table td { padding: 26px 24px 26px 0; border-bottom: 1px solid var(--line); vertical-align: top; font-size: .95rem; line-height: 1.75; }
.prob-table td:first-child { width: 26%; color: var(--ink); font-weight: 600; }
.prob-table td:last-child { padding-right: 0; color: var(--blue); }
.prob-table tr:hover td { background: #fafcfd; }

/* ---------------- 分栏图文 ---------------- */
.split { display: grid; grid-template-columns: 1.05fr .95fr; gap: 72px; align-items: center; }
.split.rev { grid-template-columns: .95fr 1.05fr; }
.split-media { position: relative; }
.split-media img { width: 100%; border-radius: 2px; }
.split-media .cap {
  margin-top: 12px; font-size: .78rem; color: var(--muted); letter-spacing: .02em;
}
.frame { position: relative; }
.frame::after {
  content: ""; position: absolute; inset: 0; border: 1px solid rgba(11, 22, 33, .08);
  pointer-events: none; border-radius: 2px;
}

/* ----------------  ---------------- */
.flow { display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; margin-top: 12px; border-top: 1px solid rgba(255,255,255,.16); }
.flow-step { padding: 30px 22px 8px 0; position: relative; }
.flow-step::before {
  content: ""; position: absolute; top: -1px; left: 0; width: 34px; height: 2px; background: var(--orange);
}
.flow-no { font-family: var(--mono); font-size: .72rem; color: rgba(255, 255, 255, .45); letter-spacing: .1em; }
.flow-step h3 { margin: 10px 0 8px; font-size: 1.16rem; color: #fff; font-weight: 600; }
.flow-step p { margin: 0; font-size: .86rem; line-height: 1.7; color: rgba(255, 255, 255, .55); }
.flow-step:not(:first-child) { padding-left: 22px; }
.flow-step:not(:first-child)::before { left: 22px; }

/* ---------------- ?---------------- */
.metrics { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid rgba(255,255,255,.16); margin-top: 64px; }
.metric { padding: 34px 28px 0 0; }
.metric + .metric { padding-left: 28px; border-left: 1px solid rgba(255,255,255,.11); }
.metric b { display: block; font-size: clamp(2rem, 3.4vw, 2.9rem); font-weight: 700; color: #fff; letter-spacing: -.03em; line-height: 1.05; }
.metric b small { font-size: .9rem; font-weight: 500; color: rgba(255,255,255,.45); margin-left: 6px; letter-spacing: 0; }
.metric span { display: block; margin-top: 10px; font-size: .84rem; color: rgba(255, 255, 255, .55); }
.fine { margin-top: 34px; font-size: .76rem; color: rgba(255, 255, 255, .38); }

/* ---------------- ?---------------- */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.case-card { display: flex; flex-direction: column; background: #fff; border: 1px solid var(--line); border-radius: 2px; overflow: hidden; transition: transform .4s var(--ease), box-shadow .4s var(--ease), border-color .4s var(--ease); }
.case-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-2); border-color: #d3dce2; }
.case-thumb { position: relative; aspect-ratio: 4 / 3; overflow: hidden; background: var(--paper-3); }
.case-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .7s var(--ease); }
.case-card:hover .case-thumb img { transform: scale(1.045); }
.case-body { padding: 24px 24px 26px; display: flex; flex-direction: column; flex: 1; }
.case-meta { display: flex; gap: 10px; font-size: .72rem; color: var(--muted); letter-spacing: .04em; }
.case-body h3 { margin: 12px 0 0; font-size: 1.08rem; font-weight: 600; color: var(--ink); line-height: 1.5; }
.case-body p { margin: 10px 0 0; font-size: .88rem; line-height: 1.75; color: var(--ink-3); flex: 1; }
.case-foot { margin-top: 20px; display: flex; align-items: center; justify-content: space-between; font-size: .8rem; color: var(--muted); }

/* ---------------- CTA ---------------- */
.cta-band { background: var(--paper-2); border-top: 1px solid var(--line); padding: 84px 0; }
.cta-inner { display: grid; grid-template-columns: 1.2fr .8fr; gap: 48px; align-items: end; }
.cta-actions { display: flex; flex-wrap: wrap; gap: 12px; justify-content: flex-end; }
.cta-band .h2 { line-height: 1.3; }

/* ---------------- 页头（内页） ---------------- */
.page-hero { position: relative; background: var(--paper-2); border-bottom: 1px solid var(--line); padding: 132px 0 72px; overflow: hidden; }
.page-hero.has-img { background: var(--navy); border-bottom: none; color: rgba(255,255,255,.72); }
.ph-img { position: absolute; inset: 0; }
.ph-img img { width: 100%; height: 100%; object-fit: cover; opacity: .34; }
.page-hero.has-img::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(11,22,33,.55), rgba(11,22,33,.94)); }
.ph-inner { position: relative; z-index: 1; }
.page-hero.has-img .h1 { color: #fff; }
.page-hero.has-img .lead { color: rgba(255,255,255,.66); }
.page-hero.has-img .crumbs, .page-hero.has-img .crumbs a { color: rgba(255,255,255,.45); }
.page-hero.has-img .eyebrow { color: #8fc4f5; }
.crumbs { display: flex; gap: 10px; align-items: center; font-size: .78rem; color: var(--muted); margin-bottom: 28px; letter-spacing: .02em; }
.crumbs i { font-style: normal; opacity: .5; }
.crumbs a:hover { color: var(--blue); }
.page-hero .h1 { max-width: 22ch; }
.page-hero .lead { margin-top: 22px; }

/* ---------------- 正文排版 ---------------- */
.prose { max-width: 68ch; }
.prose h2 { font-size: 1.45rem; margin: 2.4em 0 .8em; color: var(--ink); letter-spacing: -.01em; }
.prose h3 { font-size: 1.12rem; margin: 2em 0 .6em; color: var(--ink); }
.prose p { font-size: 1.02rem; line-height: 1.95; color: var(--ink-2); margin: 0 0 1.35em; }
.prose ul, .prose ol { margin: 0 0 1.5em; padding-left: 1.2em; }
.prose li { margin-bottom: .6em; line-height: 1.9; }
.prose strong { color: var(--ink); font-weight: 600; }
.prose blockquote {
  margin: 2em 0; padding: 20px 26px; border-left: 2px solid var(--orange);
  background: var(--paper-2); color: var(--ink-2); font-size: 1rem;
}
.prose img { margin: 2em 0; border-radius: 2px; }
.prose table { width: 100%; border-collapse: collapse; margin: 1.8em 0; font-size: .92rem; }
.prose th, .prose td { padding: 12px 14px; border-bottom: 1px solid var(--line); text-align: left; }
.prose th { background: var(--paper-2); font-weight: 600; color: var(--ink); }

/* ---------------- ?---------------- */
.spec { width: 100%; border-collapse: collapse; font-size: .93rem; }
.spec caption { text-align: left; font-size: .76rem; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); padding-bottom: 14px; }
.spec th { width: 34%; text-align: left; font-weight: 500; color: var(--muted); padding: 15px 16px 15px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
.spec td { padding: 15px 0; border-bottom: 1px solid var(--line); color: var(--ink); font-weight: 500; }
.spec tr:last-child th, .spec tr:last-child td { border-bottom: none; }

/* ---------------- 编号列表 ---------------- */
.steps { border-top: 1px solid var(--line); margin-top: 8px; }
.step { display: grid; grid-template-columns: 72px 1fr; gap: 24px; padding: 28px 0; border-bottom: 1px solid var(--line); }
.step-no { font-family: var(--mono); font-size: .78rem; color: var(--orange); letter-spacing: .1em; padding-top: 4px; }
.step h3 { margin: 0 0 8px; font-size: 1.05rem; font-weight: 600; color: var(--ink); }
.step p { margin: 0; font-size: .92rem; line-height: 1.8; color: var(--ink-3); }

/* ---------------- 案例详情 ---------------- */
.case-hero-meta { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 44px; border-top: 1px solid rgba(255,255,255,.16); padding-top: 26px; }
.case-hero-meta dt { font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; color: rgba(255,255,255,.42); margin-bottom: 6px; }
.case-hero-meta dd { margin: 0; font-size: .95rem; color: #fff; }
.gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 40px; }
.gallery figure { margin: 0; }
.gallery img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 2px; background: var(--paper-3); }
.gallery figcaption { margin-top: 8px; font-size: .76rem; color: var(--muted); }
.result-list { list-style: none; padding: 0; margin: 24px 0 0; display: grid; gap: 14px; }
.result-list li { position: relative; padding-left: 26px; font-size: .98rem; line-height: 1.8; color: var(--ink-2); }
.result-list li::before {
  content: ""; position: absolute; left: 0; top: .72em; width: 12px; height: 1px; background: var(--orange);
}

/* ---------------- 文章列表 ---------------- */
.post-list { border-top: 1px solid var(--ink); }
.post-row { display: grid; grid-template-columns: 130px 1fr 40px; gap: 32px; align-items: start; padding: 30px 0; border-bottom: 1px solid var(--line); transition: background .3s; }
.post-row:hover { background: #fafcfd; }
.post-date { font-family: var(--mono); font-size: .78rem; color: var(--muted); padding-top: 5px; letter-spacing: .04em; }
.post-row h3 { margin: 0 0 8px; font-size: 1.14rem; font-weight: 600; color: var(--ink); line-height: 1.55; }
.post-row p { margin: 0; font-size: .9rem; color: var(--ink-3); line-height: 1.8; max-width: 74ch; }
.post-arrow { color: var(--muted); padding-top: 4px; transition: transform .3s var(--ease), color .3s; }
.post-row:hover .post-arrow { transform: translateX(4px); color: var(--blue); }
.post-tags { display: flex; gap: 8px; margin-top: 12px; }

/* ---------------- ?---------------- */
.article-head { padding: 130px 0 46px; border-bottom: 1px solid var(--line); }
.article-head .h1 { font-size: clamp(1.9rem, 3.4vw, 2.9rem); max-width: 26ch; line-height: 1.3; }
.article-meta { display: flex; gap: 20px; margin-top: 26px; font-size: .82rem; color: var(--muted); font-family: var(--mono); letter-spacing: .03em; }
.article-body { padding: 64px 0 88px; }
.article-aside { border-top: 1px solid var(--ink); padding-top: 26px; margin-top: 72px; }

/* ---------------- 表单 ---------------- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { display: flex; flex-direction: column; gap: 8px; }
.field.full { grid-column: 1 / -1; }
.field label { font-size: .82rem; color: var(--ink-3); letter-spacing: .02em; }
.field label .req { color: var(--orange); }
.field input, .field select, .field textarea {
  width: 100%; padding: 12px 14px; font: inherit; font-size: .95rem; color: var(--ink);
  background: #fff; border: 1px solid var(--line); border-radius: 2px;
  transition: border-color .24s var(--ease), box-shadow .24s var(--ease);
}
.field textarea { min-height: 118px; resize: vertical; line-height: 1.7; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px rgba(8, 104, 209, .1);
}
.form-note { margin-top: 14px; font-size: .76rem; color: var(--muted); }
.form-msg { margin-top: 16px; padding: 12px 16px; border-radius: 2px; font-size: .88rem; display: none; }
.form-msg.ok { display: block; background: #eaf7ed; color: #17692c; border: 1px solid #cbe8d2; }
.form-msg.err { display: block; background: #fdeeee; color: #9b2226; border: 1px solid #f3cfd0; }
.form-card { background: #fff; border: 1px solid var(--line); padding: 40px; border-radius: 2px; box-shadow: var(--shadow-1); }

/* ---------------- ?---------------- */
.contact-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 72px; align-items: start; }
.contact-item { padding: 24px 0; border-bottom: 1px solid var(--line); }
.contact-item dt { font-size: .72rem; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); margin-bottom: 8px; }
.contact-item dd { margin: 0; font-size: 1.02rem; color: var(--ink); line-height: 1.7; }
.contact-item dd a:hover { color: var(--blue); }
.contact-tel dd { font-size: 1.6rem; font-weight: 700; letter-spacing: -.01em; }

/* ---------------- 下载 ---------------- */
.dl-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.dl-card { border: 1px solid var(--line); padding: 30px; display: flex; gap: 22px; align-items: flex-start; background: #fff; transition: border-color .3s, box-shadow .3s; }
.dl-card:hover { border-color: #cfdae2; box-shadow: var(--shadow-1); }
.dl-icon { flex: none; width: 52px; height: 64px; border: 1px solid #f0d5b4; border-radius: 3px; display: grid; place-items: center; font-family: var(--mono); font-size: .68rem; font-weight: 700; letter-spacing: .06em; color: var(--orange-2); background: #fff6ec; }
.dl-card h3 { margin: 0 0 6px; font-size: 1.02rem; font-weight: 600; color: var(--ink); }
.dl-card p { margin: 0 0 14px; font-size: .86rem; color: var(--ink-3); line-height: 1.7; }

/* ---------------- 关于 ---------------- */
.fact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); margin-top: 56px; }
.fact { background: #fff; padding: 30px 28px; margin: 0; }
.fact dt { font-size: .74rem; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); margin-bottom: 10px; }
.fact dd { margin: 0; font-size: 1.02rem; color: var(--ink); font-weight: 500; line-height: 1.6; }

.logo-wall { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); margin-top: 48px; }
.logo-wall div { border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 28px 20px; text-align: center; font-size: .92rem; color: var(--ink-2); }

/* ---------------- 页脚 ---------------- */
.site-foot { background: var(--navy); color: rgba(255, 255, 255, .58); padding: 76px 0 0; }
.foot-grid { display: grid; grid-template-columns: 1.6fr .8fr .8fr 1.2fr; gap: 48px; padding-bottom: 56px; }
.foot-logo { height: 28px; width: auto; opacity: .95; }
.foot-desc { margin: 22px 0 0; font-size: .86rem; line-height: 1.8; color: rgba(255, 255, 255, .45); max-width: 34ch; }
.foot-contact { margin-top: 22px; display: flex; flex-direction: column; gap: 6px; }
.foot-tel { font-size: 1.24rem; font-weight: 600; color: #fff; letter-spacing: .01em; }
.foot-contact a:hover { color: var(--orange); }
.foot-col h4 { margin: 0 0 18px; font-size: .74rem; letter-spacing: .14em; text-transform: uppercase; color: rgba(255, 255, 255, .38); font-weight: 600; }
.foot-col ul { list-style: none; margin: 0; padding: 0; }
.foot-col li { margin-bottom: 10px; }
.foot-col a { font-size: .88rem; color: rgba(255, 255, 255, .62); transition: color .24s; }
.foot-col a:hover { color: #fff; }
.foot-addr { font-style: normal; font-size: .86rem; line-height: 1.8; color: rgba(255, 255, 255, .55); }
.foot-hours { margin-top: 12px; font-size: .82rem; color: rgba(255, 255, 255, .38); }
.foot-bottom { display: flex; justify-content: space-between; gap: 24px; padding: 22px 40px; border-top: 1px solid rgba(255, 255, 255, .09); font-size: .76rem; color: rgba(255, 255, 255, .34); }
.foot-bottom a { color: inherit; }
.foot-bottom a:hover { color: rgba(255, 255, 255, .7); }
.foot-meta { text-align: right; }

/* ---------------- 动效 ---------------- */
[data-reveal] { opacity: 0; transform: translateY(18px); transition: opacity .85s var(--ease), transform .85s var(--ease); }
[data-reveal].in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1 !important; transform: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
  * { animation-duration: .001ms !important; }
}

/* ---------------- ?---------------- */
.svc-list { display: grid; }
.svc-row { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; padding: 56px 0; border-bottom: 1px solid var(--line); }
.svc-row:first-child { padding-top: 0; }
.svc-row:last-child { border-bottom: none; padding-bottom: 0; }
.svc-row-media { display: block; overflow: hidden; }
.svc-row-media img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; transition: transform .8s var(--ease); }
.svc-row:hover .svc-row-media img { transform: scale(1.03); }
.svc-sub { font-size: 1.04rem; color: var(--ink-2); font-weight: 500; margin: 10px 0 14px; }
.svc-row-body .svc-desc { flex: none; margin: 0 0 22px; max-width: 46ch; }

/* ---------------- FAQ ---------------- */
.faq { border-top: 1px solid var(--ink); margin-top: 8px; }
.faq-item { border-bottom: 1px solid var(--line); padding: 17px 0; }
.faq-item summary {
  cursor: pointer; font-size: .96rem; font-weight: 600; color: var(--ink);
  list-style: none; display: flex; justify-content: space-between; gap: 18px; line-height: 1.6;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; color: var(--orange); font-weight: 400; font-size: 1.15rem; line-height: 1.3; flex: none; }
.faq-item[open] summary::after { content: "\2013"; }
.faq-item p { margin: 12px 0 0; font-size: .89rem; line-height: 1.85; color: var(--ink-3); }

/* ---------------- ?---------------- */
.sol-row { display: grid; grid-template-columns: .95fr 1.05fr; gap: 56px; padding: 60px 0; border-bottom: 1px solid var(--line); align-items: start; }
.sol-row:first-child { padding-top: 0; }
.sol-row:last-child { border-bottom: none; padding-bottom: 0; }
.sol-row.rev .sol-media { order: 2; }
.sol-media img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.sol-dl { margin: 24px 0 0; display: grid; gap: 18px; }
.sol-dl dt { font-size: .71rem; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); margin-bottom: 5px; }
.sol-dl dd { margin: 0; font-size: .95rem; line-height: 1.8; color: var(--ink-2); }
.sol-dl dd.hl { color: var(--blue); font-weight: 600; }
.sol-note { margin: 24px 0 0; font-size: .82rem; color: var(--muted); padding-left: 14px; border-left: 2px solid var(--orange); line-height: 1.75; }

/* ---------------- 文档卡片 ---------------- */
.doc-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.doc-card { background: #fff; padding: 30px 26px; }
.doc-card h3 { margin: 0 0 10px; font-size: 1rem; font-weight: 600; color: var(--ink); }
.doc-card p { margin: 0; font-size: .86rem; line-height: 1.75; color: var(--ink-3); }

/* ---------------- ?---------------- */
.prev-next { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.prev-next a { display: flex; flex-direction: column; gap: 7px; padding: 18px 0; border-top: 1px solid var(--line); }
.prev-next a:last-child { text-align: right; }
.prev-next span { font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.prev-next strong { font-size: .95rem; font-weight: 600; color: var(--ink); line-height: 1.6; transition: color .24s; }
.prev-next a:hover strong { color: var(--blue); }

/* ---------------- 联系补充 ---------------- */
.map-note { margin-top: 30px; padding: 18px 20px; background: var(--paper-2); border-left: 2px solid var(--orange); font-size: .86rem; color: var(--ink-3); line-height: 1.75; }

/* ---------------- 资料留资 ---------------- */
.gate-form { display: flex; gap: 8px; flex-wrap: wrap; }
.gate-form input { flex: 1; min-width: 108px; padding: 9px 12px; border: 1px solid var(--line); border-radius: 2px; font: inherit; font-size: .86rem; }
.gate-form input:focus { outline: none; border-color: var(--blue); }
.gate-form button { height: 38px; padding: 0 16px; font-size: .85rem; }
.gate-done { font-size: .88rem; color: #17692c; margin: 0; }

/* ---------------- ?---------------- */
@media (max-width: 1080px) {
  .wrap { padding: 0 28px; }
  .head-inner { gap: 16px; }
  .nav { gap: 0; }
  .nav-link { padding: 9px 9px; font-size: .88rem; }
  .svc-grid { grid-template-columns: 1fr; }
  .case-grid { grid-template-columns: repeat(2, 1fr); }
  .split, .split.rev { gap: 40px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .hero-stat:nth-child(3) { border-left: none; padding-left: 0; }
  .hero-stat:nth-child(n+3) { border-top: 1px solid rgba(255,255,255,.11); }
  .metrics { grid-template-columns: repeat(2, 1fr); }
  .metric:nth-child(3) { border-left: none; padding-left: 0; }
  .metric:nth-child(n+3) { border-top: 1px solid rgba(255,255,255,.11); margin-top: 26px; }
  .cta-inner { grid-template-columns: 1fr; align-items: start; }
  .cta-actions { justify-content: flex-start; }
  .foot-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .flow { grid-template-columns: repeat(2, 1fr); }
  .flow-step { border-top: 1px solid rgba(255,255,255,.1); }
  .flow-step:nth-child(odd) { padding-left: 0; }
  .flow-step:nth-child(odd)::before { left: 0; }
  .logo-wall { grid-template-columns: repeat(2, 1fr); }
  .svc-row { grid-template-columns: 1fr; gap: 30px; padding: 40px 0; }
  .sol-row, .sol-row.rev { grid-template-columns: 1fr; gap: 28px; }
  .sol-row.rev .sol-media { order: 0; }
  .doc-grid { grid-template-columns: 1fr; }
  .prev-next { grid-template-columns: 1fr; gap: 0; }
}

@media (max-width: 860px) {
  .wrap { padding: 0 22px; }
  .head-cta { display: none; }
  .burger { display: block; }
  .nav {
    position: fixed; inset: 78px 0 auto 0; background: #fff;
    flex-direction: column; align-items: stretch; gap: 0;
    padding: 10px 22px 26px; border-bottom: 1px solid var(--line);
    box-shadow: 0 20px 40px -24px rgba(0,0,0,.3);
    transform: translateY(-12px); opacity: 0; visibility: hidden;
    transition: opacity .28s var(--ease), transform .28s var(--ease), visibility .28s;
    max-height: calc(100vh - 78px); overflow-y: auto;
  }
  body.nav-open .nav { opacity: 1; visibility: visible; transform: none; }
  .nav-link { padding: 14px 0; font-size: 1rem; border-bottom: 1px solid var(--line-2); border-radius: 0; }
  .nav-link.is-active { background: none; }
  .nav-item { width: 100%; }
  .nav-drop { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: none; padding: 0 0 0 14px; min-width: 0; display: none; }
  .nav-item.has-drop.is-open .nav-drop { display: block; }
  .nav-item.has-drop.is-open .ico-caret { transform: rotate(180deg); }
  .nav-drop a { padding: 10px 0; border-bottom: 1px solid var(--line-2); }
  .nav-mobile-extra { display: flex; flex-direction: column; gap: 12px; padding-top: 20px; }
  .nav-tel { font-size: 1.1rem; font-weight: 600; color: var(--ink); text-align: center; }
  .lang { padding: 5px 7px; font-size: .72rem; }

  .sec { padding: 68px 0; }
  .hero { min-height: 92vh; }
  .hero-inner { padding-top: 100px; }
  .hero-stats { margin-top: 44px; }
  .hero-stat b { font-size: 1.72rem; }
  .hero-sub { font-size: 1rem; }
  .page-hero { padding: 104px 0 50px; }
  .split, .split.rev { grid-template-columns: 1fr; gap: 32px; }
  .split.rev .split-media { order: -1; }
  .case-grid { grid-template-columns: 1fr; }
  .prob-table thead { display: none; }
  .prob-table tr { display: block; padding: 22px 0; border-bottom: 1px solid var(--line); }
  .prob-table td { display: block; padding: 0 0 8px; border: none; width: 100% !important; }
  .prob-table td:first-child { font-size: 1.02rem; }
  .prob-table td:last-child { color: var(--blue); font-weight: 500; padding-bottom: 0; }
  .prob-table tr:hover td { background: none; }
  .case-hero-meta { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .gallery { grid-template-columns: repeat(2, 1fr); }
  .post-row { grid-template-columns: 1fr; gap: 8px; }
  .post-arrow { display: none; }
  .form-grid { grid-template-columns: 1fr; }
  .form-card { padding: 26px; }
  .dl-grid { grid-template-columns: 1fr; }
  .fact-grid { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr; gap: 32px; padding-bottom: 40px; }
  .foot-bottom { flex-direction: column; gap: 8px; padding: 20px 22px; text-align: left; }
  .foot-meta { text-align: left; }
  .metrics { grid-template-columns: repeat(2, 1fr); }
  .sec-head-row { flex-direction: column; align-items: flex-start; gap: 20px; }
  .step { grid-template-columns: 44px 1fr; gap: 16px; }
  .cta-band { padding: 60px 0; }
  .btn-lg { width: 100%; }
}

@media (max-width: 420px) {
  .hero-stat b { font-size: 1.5rem; }
  .metric b { font-size: 1.7rem; }
  .gallery { grid-template-columns: 1fr; }
}