/* ============================================================
   欧莱克（唐山）科技有限公司 — 官网 Demo
   设计语言：精密计量 · 深墨蓝 × 品牌绿 · 刻度与读数
   ============================================================ */

:root {
  --ink: #0a1b24;
  --ink-2: #0f2530;
  --ink-3: #14303e;
  --paper: #f4f6f5;
  --card: #ffffff;
  --line: #dde4e2;
  --line-strong: #c6d0cd;
  --line-dark: rgba(255, 255, 255, 0.14);
  --green: #12855c;
  --green-deep: #0d6b4a;
  --green-bright: #2ec98b;
  --text: #24343c;
  --muted: #64757d;
  --muted-dark: #8fa3ab;

  --font-display: "Noto Serif SC", "Songti SC", serif;
  --font-body: "Noto Sans SC", "PingFang SC", sans-serif;
  --font-mono: "IBM Plex Mono", "SF Mono", monospace;

  --w: 1200px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--text);
  background: var(--paper);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

.wrap { max-width: var(--w); margin: 0 auto; padding: 0 24px; }

::selection { background: var(--green); color: #fff; }

/* ---------- 通用：等宽标签 / 章节头 ---------- */

.kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--green);
  display: flex;
  align-items: center;
  gap: 12px;
}
.kicker::before {
  content: "";
  width: 34px;
  height: 1px;
  background: var(--green);
}

.sec-head { margin-bottom: 48px; }
.sec-head h2 {
  font-family: var(--font-display);
  font-size: clamp(28px, 3.4vw, 42px);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--ink);
  margin-top: 10px;
  line-height: 1.3;
}
.sec-head .sub { color: var(--muted); margin-top: 8px; max-width: 640px; }

.dark .sec-head h2 { color: #fff; }
.dark .sec-head .sub { color: var(--muted-dark); }

/* 刻度尺分隔条 */
.ruler {
  height: 14px;
  background:
    repeating-linear-gradient(90deg, var(--line-strong) 0 1px, transparent 1px 12px),
    repeating-linear-gradient(90deg, var(--line-strong) 0 1px, transparent 1px 96px);
  background-size: 100% 7px, 100% 14px;
  background-position: bottom, bottom;
  background-repeat: repeat-x;
  opacity: 0.7;
}

/* ---------- 顶部信息条 ---------- */

.topbar {
  background: var(--ink);
  color: var(--muted-dark);
  font-size: 13px;
  border-bottom: 1px solid var(--line-dark);
}
.topbar .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 38px;
}
.topbar .mono { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.08em; }
.topbar .tel { color: #d8e2e0; }
.topbar .tel b { color: var(--green-bright); font-weight: 500; }

/* ---------- 导航 ---------- */

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 27, 36, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line-dark);
}
.header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.brand { display: flex; align-items: center; gap: 14px; }
.brand .mark { flex: none; }
.brand .name { display: flex; flex-direction: column; line-height: 1.25; }
.brand .name b {
  color: #fff;
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 700;
  letter-spacing: 0.14em;
}
.brand .name span {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.28em;
  color: var(--muted-dark);
  text-transform: uppercase;
}

.nav ul { display: flex; gap: 6px; }
.nav a {
  display: block;
  padding: 10px 15px;
  color: #cfdbd9;
  font-size: 15px;
  position: relative;
  transition: color 0.25s;
}
.nav a::after {
  content: "";
  position: absolute;
  left: 15px;
  right: 15px;
  bottom: 4px;
  height: 2px;
  background: var(--green-bright);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease);
}
.nav a:hover { color: #fff; }
.nav a:hover::after { transform: scaleX(1); }
.nav a.active { color: #fff; }
.nav a.active::after { transform: scaleX(1); }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--line-dark);
  color: #fff;
  width: 42px;
  height: 42px;
  border-radius: 4px;
  font-size: 18px;
  cursor: pointer;
}

/* ---------- Hero ---------- */

.hero {
  background:
    radial-gradient(1100px 500px at 85% -10%, rgba(18, 133, 92, 0.22), transparent 60%),
    linear-gradient(180deg, var(--ink) 0%, var(--ink-2) 100%);
  color: #fff;
  position: relative;
  overflow: hidden;
}
/* 蓝图网格 */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.035) 0 1px, transparent 1px 72px),
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.035) 0 1px, transparent 1px 72px);
  pointer-events: none;
}

.hero .wrap {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
  padding-top: 84px;
  padding-bottom: 96px;
  position: relative;
}

.hero .readout {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--green-bright);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: 1px solid rgba(46, 201, 139, 0.35);
  padding: 7px 14px;
  border-radius: 2px;
  background: rgba(46, 201, 139, 0.06);
}
.hero .readout .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green-bright);
  animation: pulse 2.2s infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(46, 201, 139, 0.5); }
  50% { box-shadow: 0 0 0 7px rgba(46, 201, 139, 0); }
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(36px, 4.6vw, 58px);
  font-weight: 700;
  line-height: 1.28;
  letter-spacing: 0.03em;
  margin: 26px 0 20px;
}
.hero h1 em {
  font-style: normal;
  color: var(--green-bright);
}
.hero .lead {
  color: #a9bcc2;
  font-size: 17px;
  max-width: 520px;
}

.hero .specline {
  margin-top: 30px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--muted-dark);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 0;
}
.hero .specline span { white-space: nowrap; }
.hero .specline i {
  font-style: normal;
  color: rgba(255, 255, 255, 0.25);
  margin: 0 14px;
}

.hero .cta { margin-top: 38px; display: flex; gap: 16px; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 30px;
  font-size: 15px;
  letter-spacing: 0.06em;
  border-radius: 2px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.3s var(--ease);
}
.btn-solid {
  background: var(--green);
  color: #fff;
}
.btn-solid:hover { background: var(--green-deep); transform: translateY(-2px); }
.btn-ghost {
  border-color: rgba(255, 255, 255, 0.28);
  color: #e8f0ee;
}
.btn-ghost:hover { border-color: var(--green-bright); color: var(--green-bright); }
.btn .arr { font-family: var(--font-mono); transition: transform 0.3s; }
.btn:hover .arr { transform: translateX(4px); }

/* Hero 右侧：仪表盘 + 产品卡 */

.hero-visual { position: relative; height: 480px; }

.gauge {
  position: absolute;
  inset: 0;
  margin: auto;
  width: 460px;
  height: 460px;
  opacity: 0.5;
  animation: spin 90s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.hero-card {
  position: absolute;
  background: #fff;
  border-radius: 4px;
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.45);
  overflow: hidden;
}
.hero-card img { width: 100%; height: 100%; object-fit: cover; }
.hero-card.main {
  width: 300px;
  height: 340px;
  top: 40px;
  left: 50%;
  transform: translateX(-58%);
  animation: float 7s ease-in-out infinite;
}
.hero-card.side {
  width: 200px;
  height: 200px;
  right: 4%;
  bottom: 46px;
  animation: float 7s ease-in-out 1.2s infinite;
}
@keyframes float {
  0%, 100% { margin-top: 0; }
  50% { margin-top: -12px; }
}

.hero-chip {
  position: absolute;
  left: 6%;
  bottom: 84px;
  background: var(--ink-3);
  border: 1px solid rgba(46, 201, 139, 0.4);
  border-radius: 3px;
  padding: 14px 18px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: #c9d9d5;
  line-height: 2;
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.4);
  animation: float 7s ease-in-out 0.6s infinite;
}
.hero-chip b { color: var(--green-bright); font-weight: 500; }

/* hero 底部刻度 */
.hero-ticks {
  position: relative;
  height: 18px;
  background:
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.22) 0 1px, transparent 1px 12px),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.35) 0 1px, transparent 1px 96px);
  background-size: 100% 8px, 100% 18px;
  background-position: bottom, bottom;
  background-repeat: repeat-x;
}

/* ---------- 数据条 ---------- */

.stats {
  background: var(--ink-2);
  color: #fff;
  border-top: 1px solid var(--line-dark);
}
.stats .wrap {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  padding-top: 44px;
  padding-bottom: 44px;
}
.stat {
  padding: 0 32px;
  border-left: 1px solid var(--line-dark);
}
.stat:first-child { border-left: 0; padding-left: 0; }
.stat .num {
  font-family: var(--font-mono);
  font-size: 40px;
  font-weight: 500;
  color: var(--green-bright);
  line-height: 1.2;
}
.stat .num sup { font-size: 18px; margin-left: 2px; }
.stat .lab { color: var(--muted-dark); font-size: 14px; margin-top: 6px; }

/* ---------- 区块通用 ---------- */

.section { padding: 96px 0; }
.section.dark {
  background:
    radial-gradient(900px 400px at 10% 0%, rgba(18, 133, 92, 0.14), transparent 60%),
    var(--ink);
  color: #fff;
}

/* ---------- 产品中心 ---------- */

.cat-chips { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 42px; }
.cat-chips a {
  font-size: 14px;
  padding: 9px 20px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--muted);
  background: var(--card);
  transition: all 0.25s;
}
.cat-chips a:hover {
  border-color: var(--green);
  color: var(--green);
}

.prod-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.prod-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 4px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.35s;
  position: relative;
}
.prod-card::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: var(--green);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s var(--ease);
}
.prod-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 24px 48px rgba(10, 27, 36, 0.12);
  border-color: transparent;
}
.prod-card:hover::after { transform: scaleX(1); }

.prod-card .ph {
  aspect-ratio: 4 / 3.4;
  background: #fff;
  display: grid;
  place-items: center;
  padding: 18px;
  border-bottom: 1px solid var(--line);
}
.prod-card .ph img {
  max-height: 100%;
  object-fit: contain;
  transition: transform 0.45s var(--ease);
}
.prod-card:hover .ph img { transform: scale(1.05); }

.prod-card .info { padding: 18px 20px 20px; flex: 1; }
.prod-card .tag {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--green);
  text-transform: uppercase;
}
.prod-card h3 {
  font-size: 16.5px;
  font-weight: 600;
  color: var(--ink);
  margin: 6px 0 6px;
  line-height: 1.45;
}
.prod-card p {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.sec-more { text-align: center; margin-top: 52px; }
.btn-line {
  border-color: var(--line-strong);
  color: var(--ink);
}
.btn-line:hover { border-color: var(--green); color: var(--green); }

/* ---------- 解决方案 ---------- */

.sol-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.sol-card {
  background: var(--ink-3);
  border: 1px solid var(--line-dark);
  border-radius: 4px;
  overflow: hidden;
  transition: transform 0.35s var(--ease), border-color 0.35s;
}
.sol-card:hover { transform: translateY(-6px); border-color: rgba(46, 201, 139, 0.5); }
.sol-card .ph {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: #fff;
}
.sol-card .ph img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s var(--ease);
  filter: saturate(0.9);
}
.sol-card:hover .ph img { transform: scale(1.06); }
.sol-card .info { padding: 20px 22px 24px; }
.sol-card .idx {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--green-bright);
}
.sol-card h3 {
  font-size: 16.5px;
  font-weight: 600;
  color: #fff;
  margin: 8px 0 8px;
  line-height: 1.5;
}
.sol-card p {
  font-size: 13px;
  color: var(--muted-dark);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.sol-tags { margin-top: 40px; display: flex; flex-wrap: wrap; gap: 10px; }
.sol-tags a {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  padding: 8px 16px;
  border: 1px dashed rgba(255, 255, 255, 0.25);
  border-radius: 2px;
  color: var(--muted-dark);
  transition: all 0.25s;
}
.sol-tags a:hover { border-color: var(--green-bright); color: var(--green-bright); }

/* ---------- 成功案例 ---------- */

.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.case-card {
  position: relative;
  border-radius: 4px;
  overflow: hidden;
  aspect-ratio: 16 / 11;
  border: 1px solid var(--line);
}
.case-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}
.case-card:hover img { transform: scale(1.07); }
.case-card .veil {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(10, 27, 36, 0.88) 100%);
}
.case-card .txt {
  position: absolute;
  left: 22px;
  right: 22px;
  bottom: 18px;
  color: #fff;
}
.case-card .txt .loc {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--green-bright);
  text-transform: uppercase;
}
.case-card .txt h3 { font-size: 17px; font-weight: 600; margin-top: 4px; }

/* ---------- 首页公司简介 ---------- */

.about-teaser .wrap {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 64px;
  align-items: center;
}
.about-teaser .photo {
  position: relative;
  border-radius: 4px;
}
.about-teaser .photo img {
  border-radius: 4px;
  box-shadow: 0 30px 60px rgba(10, 27, 36, 0.18);
}
.about-teaser .photo::before {
  content: "";
  position: absolute;
  inset: -18px auto auto -18px;
  width: 120px;
  height: 120px;
  border-top: 2px solid var(--green);
  border-left: 2px solid var(--green);
  border-radius: 2px;
}
.about-teaser .photo .est {
  position: absolute;
  right: -14px;
  bottom: -20px;
  background: var(--ink);
  color: #fff;
  padding: 16px 22px;
  border-radius: 3px;
  font-family: var(--font-mono);
  box-shadow: 0 18px 36px rgba(10, 27, 36, 0.3);
}
.about-teaser .photo .est b {
  display: block;
  font-size: 26px;
  font-weight: 500;
  color: var(--green-bright);
}
.about-teaser .photo .est span { font-size: 11px; letter-spacing: 0.18em; color: var(--muted-dark); }

.about-teaser .body p { color: var(--muted); margin: 18px 0 8px; }
.about-points { margin: 26px 0 34px; }
.about-points li {
  display: flex;
  gap: 14px;
  padding: 13px 0;
  border-bottom: 1px dashed var(--line-strong);
  font-size: 15px;
  color: var(--text);
}
.about-points li:first-child { border-top: 1px dashed var(--line-strong); }
.about-points .no {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--green);
  padding-top: 3px;
  flex: none;
}

/* ---------- 页脚 ---------- */

.footer {
  background: var(--ink);
  color: var(--muted-dark);
  font-size: 14px;
}
.footer .cols {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 0.9fr;
  gap: 40px;
  padding: 72px 0 56px;
}
.footer h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.06em;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.footer h4::before {
  content: "";
  width: 16px;
  height: 1px;
  background: var(--green-bright);
}
.footer .fnav li { margin-bottom: 11px; }
.footer .fnav a { transition: color 0.25s; }
.footer .fnav a:hover { color: var(--green-bright); }

.footer .fbrand .name {
  font-family: var(--font-display);
  color: #fff;
  font-size: 20px;
  letter-spacing: 0.12em;
  font-weight: 700;
}
.footer .fbrand .en {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  margin-top: 4px;
}
.footer .fbrand p { margin-top: 18px; line-height: 2; }
.footer .fbrand b { color: #d8e2e0; font-weight: 500; }

.footer .qr img {
  width: 116px;
  border-radius: 4px;
  border: 1px solid var(--line-dark);
  padding: 6px;
  background: #fff;
}
.footer .qr span { display: block; margin-top: 10px; font-size: 12.5px; }

.footer .legal {
  border-top: 1px solid var(--line-dark);
  padding: 22px 0;
  font-size: 12.5px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}
.footer .legal a:hover { color: var(--green-bright); }
.footer .legal .mono { font-family: var(--font-mono); letter-spacing: 0.08em; }

/* ---------- 内页（公司简介） ---------- */

.page-hero {
  position: relative;
  color: #fff;
  padding: 110px 0 90px;
  background: var(--ink);
  overflow: hidden;
}
.page-hero .bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center 30%;
  opacity: 0.32;
  filter: saturate(0.7);
}
.page-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10, 27, 36, 0.2) 0%, var(--ink) 100%);
}
.page-hero .wrap { position: relative; z-index: 2; }
.page-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(34px, 4vw, 50px);
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-top: 14px;
}
.page-hero .crumb {
  margin-top: 16px;
  font-size: 13.5px;
  color: var(--muted-dark);
}
.page-hero .crumb a:hover { color: var(--green-bright); }
.page-hero .crumb i { font-style: normal; margin: 0 8px; opacity: 0.5; }

.about-body { padding: 88px 0; }
.about-grid {
  display: grid;
  grid-template-columns: 1fr 0.92fr;
  gap: 60px;
  align-items: start;
}
.about-grid .lead-p {
  font-size: 19px;
  line-height: 2;
  color: var(--ink);
  font-weight: 500;
}
.about-grid .lead-p em { color: var(--green); font-style: normal; }
.about-grid p { color: var(--muted); margin-top: 20px; }

.fact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--line-strong);
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  overflow: hidden;
  margin-top: 40px;
}
.fact {
  background: var(--card);
  padding: 26px 26px 24px;
}
.fact .num {
  font-family: var(--font-mono);
  font-size: 30px;
  color: var(--green);
  font-weight: 500;
  line-height: 1.3;
}
.fact .num sup { font-size: 14px; }
.fact .lab { font-size: 13.5px; color: var(--muted); margin-top: 4px; }

.about-photos { position: relative; }
.about-photos .p1 {
  border-radius: 4px;
  box-shadow: 0 30px 60px rgba(10, 27, 36, 0.18);
}
.about-photos .cap {
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 10px;
}
.about-photos .cap::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--green);
}

/* 业务范围 */
.scope { padding: 88px 0; background: var(--card); border-top: 1px solid var(--line); }
.scope-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.scope-card {
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 30px 26px 28px;
  transition: all 0.3s var(--ease);
  background: var(--paper);
}
.scope-card:hover {
  border-color: var(--green);
  transform: translateY(-5px);
  box-shadow: 0 20px 40px rgba(10, 27, 36, 0.1);
}
.scope-card .idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--green);
}
.scope-card h3 {
  font-size: 17px;
  color: var(--ink);
  margin: 12px 0 10px;
  font-weight: 600;
}
.scope-card p { font-size: 13.5px; color: var(--muted); line-height: 1.8; }

/* 联系条 */
.contact-strip { background: var(--ink); color: #fff; padding: 72px 0; }
.contact-strip .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 40px;
  flex-wrap: wrap;
}
.contact-strip h2 {
  font-family: var(--font-display);
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 700;
}
.contact-strip .meta {
  margin-top: 14px;
  color: var(--muted-dark);
  font-size: 14.5px;
  line-height: 2.1;
}
.contact-strip .meta b { color: var(--green-bright); font-weight: 500; font-family: var(--font-mono); }

/* ---------- 施工中提示 ---------- */

.toast {
  position: fixed;
  top: 96px;
  left: 50%;
  transform: translate(-50%, -16px);
  z-index: 999;
  background: var(--ink);
  color: #fff;
  border: 1px solid rgba(46, 201, 139, 0.5);
  border-left: 4px solid var(--green-bright);
  padding: 16px 26px;
  border-radius: 3px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
  opacity: 0;
  pointer-events: none;
  transition: all 0.35s var(--ease);
  display: flex;
  align-items: center;
  gap: 14px;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.toast .ico {
  font-family: var(--font-mono);
  color: var(--green-bright);
  font-size: 20px;
  line-height: 1;
}
.toast .t1 { font-size: 15px; font-weight: 600; letter-spacing: 0.04em; }
.toast .t2 {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--muted-dark);
  text-transform: uppercase;
  margin-top: 2px;
}

/* ---------- 滚动入场 ---------- */

.rv {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.rv.in { opacity: 1; transform: none; }
.rv.d1 { transition-delay: 0.08s; }
.rv.d2 { transition-delay: 0.16s; }
.rv.d3 { transition-delay: 0.24s; }
.rv.d4 { transition-delay: 0.32s; }

/* ---------- 响应式 ---------- */

@media (max-width: 1080px) {
  .prod-grid { grid-template-columns: repeat(3, 1fr); }
  .sol-grid { grid-template-columns: repeat(2, 1fr); }
  .stats .wrap { grid-template-columns: repeat(2, 1fr); gap: 32px 0; }
  .stat:nth-child(3) { border-left: 0; padding-left: 0; }
  .hero .wrap { grid-template-columns: 1fr; padding-top: 64px; }
  .hero-visual { display: none; }
  .footer .cols { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 860px) {
  .nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(78vw, 320px);
    background: var(--ink-2);
    border-left: 1px solid var(--line-dark);
    padding: 90px 30px 30px;
    transform: translateX(100%);
    transition: transform 0.4s var(--ease);
    z-index: 90;
  }
  .nav.open { transform: none; }
  .nav ul { flex-direction: column; gap: 2px; }
  .nav a { font-size: 17px; padding: 13px 4px; }
  .nav-toggle { display: block; position: relative; z-index: 95; }

  .about-teaser .wrap, .about-grid { grid-template-columns: 1fr; }
  .case-grid { grid-template-columns: repeat(2, 1fr); }
  .prod-grid { grid-template-columns: repeat(2, 1fr); }
  .scope-grid { grid-template-columns: repeat(2, 1fr); }
  .section { padding: 72px 0; }
  .topbar .mono { display: none; }
}

@media (max-width: 560px) {
  .prod-grid, .case-grid, .sol-grid, .scope-grid, .fact-grid { grid-template-columns: 1fr; }
  .stats .wrap { grid-template-columns: 1fr 1fr; }
  .stat { padding: 0 18px; }
  .footer .cols { grid-template-columns: 1fr; gap: 32px; }
  .hero h1 { font-size: 32px; }
}