/* =========================================================
   IRONPI 埃恩精工 官网 v2 — 可验证的数字化交付体系
   苹果风设计系统 × VI 品牌色 #0e90d2 / #0C68AB
   ========================================================= */

:root {
  --bg: #ffffff;
  --bg-soft: #f5f5f7;
  --bg-dark: #0b1220;
  --bg-dark-soft: #101a2e;
  --text: #1d1d1f;
  --text-dim: #6e6e73;
  --text-invert: #f5f5f7;
  --text-invert-dim: #a1a8b4;
  --accent: #0e90d2;
  --accent-deep: #0C68AB;
  --accent-soft: #e3f3fc;
  --accent-gradient: linear-gradient(135deg, #0e90d2 0%, #0C68AB 100%);
  --card: #ffffff;
  --card-dark: #16233c;
  --border: rgba(0, 0, 0, 0.08);
  --border-dark: rgba(255, 255, 255, 0.12);
  --shadow: 0 10px 40px rgba(14, 96, 170, 0.08);
  --shadow-lg: 0 24px 60px rgba(12, 104, 171, 0.14);
  --radius: 18px;
  --radius-lg: 28px;
  --nav-h: 64px;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro SC", "PingFang SC",
    "Helvetica Neue", "Microsoft YaHei", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

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

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--accent-deep);
}

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 28px;
}

/* ---------------- 毛玻璃导航 ---------------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-h);
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow 0.3s ease;
}

.nav.scrolled {
  box-shadow: 0 6px 24px rgba(12, 104, 171, 0.08);
}

.nav-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 28px;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 18px;
  color: var(--text);
  letter-spacing: 0.5px;
}

.logo-mark {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: var(--accent-gradient);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 800;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
}

.nav-links a {
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  position: relative;
}

.nav-links a:hover {
  color: var(--accent);
}

.nav-links a.active {
  color: var(--accent);
  font-weight: 600;
}

.nav-cta {
  padding: 8px 18px;
  border-radius: 980px;
  background: var(--accent-gradient);
  color: #fff !important;
  font-weight: 600;
  box-shadow: 0 4px 14px rgba(14, 144, 210, 0.28);
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 22px rgba(14, 144, 210, 0.35);
}

.nav-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
}

.nav-burger span {
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-burger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-burger.open span:nth-child(2) {
  opacity: 0;
}
.nav-burger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------------- 通用区块 ---------------- */
.section {
  padding: 56px 0;
}

.section.alt {
  background: var(--bg-soft);
}

.section-head {
  max-width: 780px;
  margin-bottom: 28px;
}

.section-head.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.kicker {
  display: inline-block;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}

.section-head h2 {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.5px;
  margin-bottom: 10px;
}

.section-head p {
  color: var(--text-dim);
  font-size: 15.5px;
}

/* ---------------- Hero ---------------- */
.hero {
  padding: calc(var(--nav-h) + 28px) 0 44px;
  background: var(--bg-soft);
  overflow: hidden;
  position: relative;
}

.hero::before {
  content: "";
  position: absolute;
  top: -220px;
  right: -180px;
  width: 560px;
  height: 560px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(14, 144, 210, 0.14) 0%, rgba(12, 104, 171, 0) 70%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
  position: relative;
}

.hero-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--accent-deep);
  background: var(--accent-soft);
  padding: 5px 14px;
  border-radius: 980px;
  margin-bottom: 12px;
}

.hero h1 {
  font-size: clamp(28px, 3.6vw, 42px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -1px;
  margin-bottom: 12px;
}

.hl {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-slogan {
  font-size: 17px;
  font-weight: 700;
  color: var(--accent-deep);
  margin-bottom: 6px;
}

.brand-slogan small {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-dim);
  letter-spacing: 0.5px;
  margin-top: 2px;
}

.hero-sub {
  color: var(--text-dim);
  font-size: 15.5px;
  max-width: 560px;
}

.hero-ctas {
  display: flex;
  gap: 12px;
  margin-top: 20px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 24px;
  border-radius: 980px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.25s ease;
  border: none;
}

.btn-primary {
  background: var(--accent-gradient);
  color: #fff !important;
  box-shadow: 0 8px 24px rgba(14, 144, 210, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(14, 144, 210, 0.38);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.8);
  color: var(--accent-deep) !important;
  border: 1px solid rgba(12, 104, 171, 0.3);
}

.btn-ghost:hover {
  border-color: var(--accent);
  background: #fff;
  transform: translateY(-2px);
}

.btn-dark {
  background: var(--text);
  color: #fff !important;
}

.hero-visual {
  position: relative;
}

.hero-photo {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.hero-card {
  position: absolute;
  left: -28px;
  bottom: -34px;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 16px 20px;
  min-width: 300px;
}

.hero-card .big {
  font-size: 30px;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
}

.hero-card .label {
  font-size: 13px;
  color: var(--text-dim);
  margin: 2px 0 10px;
}

.hero-card .row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px 20px;
}

.hero-card .stat b {
  display: block;
  font-size: 16px;
  color: var(--text);
}

.hero-card .stat span {
  font-size: 11.5px;
  color: var(--text-dim);
}

/* ---------------- 数据事实带 ---------------- */
.stats-band {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 18px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 34px 28px;
  box-shadow: var(--shadow);
}

.stat-item {
  text-align: center;
}

.stat-item .num {
  font-size: clamp(28px, 3vw, 38px);
  font-weight: 800;
  color: var(--accent);
  line-height: 1.1;
}

.stat-item .desc {
  font-size: 14px;
  color: var(--text-dim);
  margin-top: 6px;
}

/* ---------------- 核心能力 Bento ---------------- */
.five-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
}

.five-card {
  flex: 1 1 calc(33.333% - 14px);
  max-width: calc(33.333% - 14px);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  box-shadow: var(--shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.five-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.five-card .idx {
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 1px;
  color: var(--accent);
  margin-bottom: 6px;
}

.five-card h3 {
  font-size: 16.5px;
  font-weight: 800;
  margin-bottom: 2px;
}

.five-card .slogan {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--accent-deep);
  margin-bottom: 8px;
}

.five-card p {
  font-size: 13.5px;
  color: var(--text-dim);
}

.five-card.feature {
  background: var(--accent-gradient);
  color: #fff;
}

.five-card.feature p {
  color: rgba(255, 255, 255, 0.85);
}

.five-card.feature .idx {
  color: rgba(255, 255, 255, 0.8);
}

.five-card.feature .slogan {
  color: rgba(255, 255, 255, 0.9);
}

/* ---------------- 产品族 Bento ---------------- */
.prod-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.prod-card {
  display: block;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  padding: 0 0 18px;
  box-shadow: var(--shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  color: var(--text);
}

.prod-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.prod-img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  display: block;
}

.prod-card .icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--accent-soft);
  font-size: 17px;
  margin: -18px 20px 0;
  position: relative;
  border: 1px solid rgba(14, 144, 210, 0.2);
}

.prod-card h3 {
  font-size: 17px;
  font-weight: 800;
  margin: 8px 20px 6px;
}

.prod-card p {
  font-size: 13.5px;
  color: var(--text-dim);
  margin: 0 20px 10px;
}

.prod-card .items {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin: 0 20px;
}

.prod-card .items span,
.tags span {
  font-size: 12px;
  font-weight: 600;
  color: var(--accent-deep);
  background: var(--accent-soft);
  padding: 3px 10px;
  border-radius: 980px;
}

.prod-sub {
  margin: 16px 26px 0;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}

.prod-sub h4 {
  font-size: 13px;
  color: var(--text-dim);
  font-weight: 600;
  margin-bottom: 10px;
}

.prod-sub .tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* ---------------- 案例 ---------------- */
.case-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.case-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  padding-bottom: 24px;
  box-shadow: var(--shadow);
  position: relative;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.case-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.case-img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  display: block;
}

.case-card h3 {
  font-size: 17px;
  font-weight: 800;
  padding: 14px 20px 3px;
}

.case-card .scene {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent-deep);
  padding: 0 20px;
}

.case-card .desc {
  font-size: 13.5px;
  color: var(--text-dim);
  padding: 8px 20px 10px;
}

.case-card .res {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 10px;
  padding: 0 20px;
  margin-top: 10px;
}

.case-card .r {
  background: var(--bg-soft);
  border-radius: 12px;
  padding: 8px 6px;
  text-align: center;
}

.case-card .r b {
  display: block;
  font-size: 15.5px;
  color: var(--accent);
}

.case-card .r span {
  font-size: 11.5px;
  color: var(--text-dim);
}

.case-params {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  padding: 0 20px;
  margin-top: 10px;
}

.case-params .cp {
  background: var(--accent-soft);
  border-radius: 12px;
  padding: 8px 6px;
  text-align: center;
}

.case-params .cp b {
  display: block;
  font-size: 15px;
  color: var(--accent-deep);
}

.case-params .cp span {
  font-size: 11.5px;
  color: var(--text-dim);
}

.badge {
  position: absolute;
  top: 16px;
  right: 16px;
  font-size: 12px;
  font-weight: 700;
  color: #fff;
  background: rgba(12, 104, 171, 0.82);
  backdrop-filter: blur(6px);
  padding: 5px 14px;
  border-radius: 980px;
}

/* ---------------- 客户带 ---------------- */
.client-band {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

.client-band span {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-dim);
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 20px;
  letter-spacing: 0.3px;
}

/* ---------------- 全球客户群体 ---------------- */
.client-marquee {
  overflow: hidden;
  padding: 4px 0 8px;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 5%, #000 95%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 5%, #000 95%, transparent);
}

.client-track {
  display: flex;
  align-items: center;
  gap: 14px;
  width: max-content;
  animation: clientScroll 60s linear infinite;
}

.client-marquee:hover .client-track {
  animation-play-state: paused;
}

@keyframes clientScroll {
  from {
    transform: translate3d(0, 0, 0);
  }
  to {
    transform: translate3d(-50%, 0, 0);
  }
}

.client-logo {
  flex: 0 0 auto;
  min-width: 186px;
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  color: #96a1af;
  font-size: 17px;
  font-weight: 800;
  letter-spacing: 0.4px;
  white-space: nowrap;
  transition: color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
}

.client-logo:hover {
  color: var(--c, var(--accent));
  border-color: rgba(14, 144, 210, 0.35);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.client-logo img,
.client-logo svg {
  height: 36px;
  width: auto;
  max-width: 152px;
  object-fit: contain;
  opacity: 0.9;
  transition: opacity 0.3s ease, transform 0.3s ease;
  pointer-events: none;
}

.client-logo:hover img,
.client-logo:hover svg {
  opacity: 1;
  transform: scale(1.05);
}

.client-logo .cn {
  font-size: 18px;
  letter-spacing: 1px;
}

.client-logo .latin {
  text-transform: uppercase;
  letter-spacing: 1.2px;
}

@media (max-width: 720px) {
  .client-logo {
    min-width: 144px;
    height: 64px;
    font-size: 15px;
    padding: 0 16px;
  }
  .client-logo .cn {
    font-size: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .client-track {
    animation: none;
  }
}

/* ---------------- 资质区 ---------------- */.cred-badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.cb {
  font-size: 13px;
  font-weight: 700;
  color: var(--accent-deep);
  background: var(--accent-soft);
  border: 1px solid rgba(14, 144, 210, 0.25);
  padding: 8px 16px;
  border-radius: 980px;
}

.cred-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 20px;
}

.cred {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
  box-shadow: var(--shadow);
}

.cred b {
  display: block;
  font-size: 17px;
  color: var(--accent-deep);
  margin-bottom: 4px;
}

.cred span {
  font-size: 13px;
  color: var(--text-dim);
}

.cert-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.cert-grid figure {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px;
  box-shadow: var(--shadow);
  text-align: center;
}

.cert-grid img {
  width: 100%;
  height: 200px;
  object-fit: contain;
  border-radius: 10px;
  background: #fafbfc;
}

.cert-grid figcaption {
  font-size: 13.5px;
  font-weight: 700;
  color: var(--accent-deep);
  padding: 12px 4px 4px;
}

/* ---------------- 服务分栏 ---------------- */
.service-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.service-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px;
  box-shadow: var(--shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.service-card .s-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--accent-gradient);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 16px;
}

.service-card h3 {
  font-size: 17px;
  font-weight: 800;
  margin-bottom: 10px;
}

.service-card p {
  font-size: 13.5px;
  color: var(--text-dim);
  margin-bottom: 14px;
}

.service-card ul {
  list-style: none;
}

.service-card li {
  position: relative;
  padding: 6px 0 6px 22px;
  font-size: 13.5px;
  color: var(--text);
  border-top: 1px dashed var(--border);
}

.service-card li:first-child {
  border-top: none;
}

.service-card li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 14px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
}

/* ---------------- 深色 CTA ---------------- */
.cta-section {
  background: var(--bg-dark);
  color: var(--text-invert);
  padding: 56px 0;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(600px 260px at 20% 0%, rgba(14, 144, 210, 0.22) 0%, transparent 60%),
    radial-gradient(500px 240px at 85% 100%, rgba(12, 104, 171, 0.28) 0%, transparent 60%);
  pointer-events: none;
}

.cta-section .container {
  position: relative;
  text-align: center;
}

.cta-section h2 {
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 10px;
}

.cta-section p {
  color: var(--text-invert-dim);
  font-size: 15px;
  max-width: 640px;
  margin: 0 auto 20px;
}

/* ---------------- 关于页 ---------------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 44px;
  align-items: start;
}

.about-text p {
  font-size: 15.5px;
  color: var(--text-dim);
  margin-bottom: 16px;
}

.about-photo {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  margin-top: 10px;
}

.timeline {
  border-left: 2px solid rgba(14, 144, 210, 0.3);
  padding-left: 24px;
  margin-left: 4px;
}

.tl-item {
  position: relative;
  padding-bottom: 26px;
}

.tl-item:last-child {
  padding-bottom: 0;
}

.tl-item::before {
  content: "";
  position: absolute;
  left: -31px;
  top: 4px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent-gradient);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

.tl-item .t {
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 1px;
  color: var(--accent);
  margin-bottom: 4px;
}

.tl-item h4 {
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 6px;
}

.tl-item p {
  font-size: 14.5px;
  color: var(--text-dim);
}

/* ---------------- 联系页 ---------------- */
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 28px;
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.ci {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
  box-shadow: var(--shadow);
}

.ci .k {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--accent);
  margin-bottom: 6px;
}

.ci .v {
  font-size: 15.5px;
  font-weight: 600;
  color: var(--text);
  word-break: break-all;
}

.form-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px;
  box-shadow: var(--shadow-lg);
}

.form-row {
  margin-bottom: 14px;
}

.form-row label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text);
}

.form-row input,
.form-row textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 11px 14px;
  font-size: 14px;
  font-family: var(--font);
  background: var(--bg-soft);
  outline: none;
  transition: border-color 0.2s ease, background 0.2s ease;
  resize: vertical;
}

.form-row input:focus,
.form-row textarea:focus {
  border-color: var(--accent);
  background: #fff;
}

/* ---------------- 页脚 ---------------- */
.footer {
  background: var(--bg-dark);
  color: var(--text-invert);
  padding: 44px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 28px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-dark);
}

.footer .logo {
  color: var(--text-invert);
  margin-bottom: 12px;
}

.footer p {
  font-size: 13px;
  color: var(--text-invert-dim);
  max-width: 280px;
}

.footer h5 {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--text-invert-dim);
  margin-bottom: 10px;
}

.footer a {
  display: block;
  font-size: 13.5px;
  color: var(--text-invert);
  padding: 3px 0;
}

.footer a:hover {
  color: #6fc7ef;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px;
  padding-top: 16px;
  font-size: 12.5px;
  color: var(--text-invert-dim);
}

/* ---------------- 页头横幅 ---------------- */
.page-hero {
  padding: calc(var(--nav-h) + 36px) 0 36px;
  background: var(--bg-soft);
  position: relative;
  overflow: hidden;
}

.page-hero::after {
  content: "";
  position: absolute;
  top: -160px;
  left: -140px;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(14, 144, 210, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.page-hero .container {
  position: relative;
}

.page-hero h1 {
  font-size: clamp(26px, 3.2vw, 34px);
  font-weight: 800;
  letter-spacing: -0.8px;
  margin-bottom: 10px;
}

.page-hero p {
  color: var(--text-dim);
  font-size: 15.5px;
  max-width: 680px;
}

/* ---------------- 交付流程带 ---------------- */
.flow-band {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 12px;
}

.flow-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px 8px;
  text-align: center;
  box-shadow: var(--shadow);
}

.flow-item .n {
  font-size: 20px;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: 4px;
}

.flow-item .d {
  font-size: 12.5px;
  color: var(--text-dim);
}

/* ---------------- 图片说明 ---------------- */
.photo-note {
  margin-top: 10px;
  font-size: 13px;
  color: var(--text-dim);
  text-align: center;
}

/* ---------------- 动画 ---------------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ---------------- 无障碍：减少动画偏好 ---------------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ---------------- 响应式 ---------------- */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }

  .hero-card {
    position: static;
    margin-top: 24px;
    min-width: 0;
  }

  .five-grid {
    justify-content: center;
  }

  .five-card {
    flex: 1 1 calc(50% - 7px);
    max-width: calc(50% - 7px);
  }

  .stats-band {
    grid-template-columns: repeat(3, 1fr);
  }

  .flow-band {
    grid-template-columns: repeat(4, 1fr);
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(20px);
    padding: 18px 28px 26px;
    gap: 4px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    display: none;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    padding: 12px 6px;
    font-size: 16px;
    border-bottom: 1px solid var(--border);
  }

  .nav-links .nav-cta {
    margin-top: 10px;
    text-align: center;
    border-bottom: none;
  }

  .nav-burger {
    display: flex;
  }

  .prod-grid,
  .case-list,
  .service-grid,
  .contact-grid,
  .about-grid {
    grid-template-columns: 1fr;
  }

  .five-grid {
    flex-direction: column;
  }

  .five-card {
    flex: 1 1 100%;
    max-width: 100%;
  }

  .stats-band {
    grid-template-columns: repeat(2, 1fr);
  }

  .cred-list,
  .cert-grid {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 44px 0;
  }
}

@media (max-width: 480px) {
  .hero {
    padding-top: calc(var(--nav-h) + 36px);
  }

  .hero-ctas {
    flex-direction: column;
  }

  .hero-ctas .btn {
    width: 100%;
  }

  .stats-band {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    padding: 26px 18px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .case-card .res,
  .case-params {
    grid-template-columns: 1fr;
  }
}

/* 品牌 logo 图片 */
.brand-logo {
  height: 48px;
  width: auto;
  display: block;
  object-fit: contain;
}

.footer-logo {
  height: 26px;
}