/*
 * 精一智造科技有限公司官网重构样式
 * 视觉定位：智能制造型，智能蓝 + 数字绿，工业橙点缀
 * 设计原则：克制、专业、语义化、杜绝AI风格
 */

/* 基础重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary: #0c4a6e; /* 智能蓝 */
  --accent: #059669;  /* 数字绿 */
  --highlight: #ea580c; /* 工业橙 */
  --ink-900: #0b1726;
  --ink-700: #1f2937;
  --ink-500: #475569;
  --ink-300: #94a3b8;
  --bg: #f5f7fb;
  --card: #ffffff;
  --line: #e2e8f0;
  --radius-sm: 6px;
  --radius-md: 10px;
  --shadow-sm: 0 6px 20px rgba(12, 74, 110, 0.08);
  --shadow-md: 0 12px 32px rgba(12, 74, 110, 0.12);
  --font-sans: "Noto Sans SC", "Inter", "IBM Plex Sans", "Microsoft YaHei", sans-serif;
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--ink-700);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.25s ease;
}

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

ul {
  list-style: none;
}

.container {
  width: min(1200px, 92vw);
  margin: 0 auto;
}

section {
  padding: 80px 0;
}

.section-head {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 36px;
}

.section-head .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent);
  font-size: 14px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.section-head h2 {
  font-size: 32px;
  color: var(--ink-900);
}

.section-head p {
  color: var(--ink-500);
  max-width: 720px;
}

/* 头部导航 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(8px);
  background: rgba(245, 247, 251, 0.9);
  border-bottom: 1px solid var(--line);
}

.floating-meta {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 1200;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 10px;
}

.floating-meta-panel {
  width: 360px;
  max-width: calc(100vw - 48px);
  background: var(--ink-900);
  color: #e2e8f0;
  border-radius: var(--radius);
  padding: 14px 16px;
  box-shadow: 0 18px 45px rgba(15, 23, 42, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: transform 0.2s ease, opacity 0.2s ease, box-shadow 0.2s ease;
}

.floating-meta.visible .floating-meta-panel {
  opacity: 1;
  transform: translateY(0);
}

.floating-meta:not(.visible) .floating-meta-panel {
  opacity: 0;
  transform: translateY(8px);
  pointer-events: none;
}

.floating-meta-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.floating-meta-header span {
  font-weight: 700;
  letter-spacing: 0.01em;
}

.floating-meta-close {
  border: none;
  background: transparent;
  color: #e2e8f0;
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
  padding: 4px;
}

.floating-meta-body {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.meta-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}

.meta-pill {
  padding: 4px 10px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-sm);
  color: #e2e8f0;
}

.meta-links {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  align-items: center;
}

.meta-links a {
  color: #e2e8f0;
  font-weight: 600;
}

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

.floating-meta-open {
  border: none;
  background: var(--primary);
  color: #fff;
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-weight: 600;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
}

.floating-meta.visible .floating-meta-open {
  display: none;
}

.floating-meta:not(.visible) .floating-meta-open {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--ink-900);
}

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: var(--primary);
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 700;
  box-shadow: var(--shadow-sm);
}

.brand-text strong {
  display: block;
  font-size: 18px;
  color: var(--ink-900);
}

.brand-text small {
  color: var(--ink-500);
  font-size: 12px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
}

.nav-links a {
  padding: 10px 0;
  position: relative;
  font-weight: 600;
  color: var(--ink-700);
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -8px;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 0.25s ease;
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-cta {
  padding: 10px 14px;
  border: 1px solid var(--ink-300);
  border-radius: var(--radius-sm);
  color: var(--ink-900);
  font-weight: 600;
  transition: all 0.25s ease;
}

.nav-cta:hover {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: var(--shadow-sm);
}

/* 按钮与标签 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--primary);
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  transition: all 0.25s ease;
}

.btn:hover {
  background: #0a3b57;
  box-shadow: var(--shadow-sm);
}

.btn-secondary {
  background: #fff;
  color: var(--primary);
  border-color: var(--line);
}

.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  background: #e8f5f0;
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
}

/* 首屏 */
.hero-smart {
  position: relative;
  background: radial-gradient(circle at 20% 20%, rgba(5, 150, 105, 0.12), transparent 35%),
    radial-gradient(circle at 80% 20%, rgba(12, 74, 110, 0.14), transparent 42%),
    #f0f4f9;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 32px;
  align-items: center;
  padding: 40px 0;
}

.hero-copy h1 {
  font-size: 44px;
  color: var(--ink-900);
  line-height: 1.2;
  margin: 12px 0 16px;
}

.hero-copy p {
  color: var(--ink-500);
  font-size: 18px;
  max-width: 640px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  margin-top: 24px;
  flex-wrap: wrap;
}

.hero-meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(140px, 1fr));
  gap: 12px;
  margin-top: 28px;
}

.meta-card {
  padding: 14px 16px;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
}

.meta-card strong {
  display: block;
  color: var(--ink-900);
  font-size: 22px;
}

.meta-card span {
  color: var(--ink-500);
  font-size: 13px;
}

.hero-visual {
  position: relative;
  background: url("../images/smart_factory_overview.png") center/cover no-repeat;
  height: 420px;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.hero-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(12, 74, 110, 0.6), rgba(12, 74, 110, 0.25));
}

.overlay-panel {
  position: absolute;
  bottom: 16px;
  left: 16px;
  right: 16px;
  background: rgba(255, 255, 255, 0.92);
  border-radius: var(--radius-sm);
  padding: 16px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.overlay-panel h4 {
  font-size: 16px;
  color: var(--ink-900);
}

.overlay-panel ul {
  color: var(--ink-500);
  font-size: 13px;
  line-height: 1.6;
}

/* KPI 带 */
.kpi-band {
  background: #0f2435;
  color: #e2e8f0;
  padding: 34px 0;
}

.kpi-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.kpi {
  padding: 16px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(226, 232, 240, 0.25);
  background: rgba(255, 255, 255, 0.04);
}

.kpi strong {
  display: block;
  font-size: 26px;
  color: #fff;
  margin-bottom: 6px;
}

.kpi span {
  color: #cbd5e1;
  font-size: 14px;
}

/* 卡片 & 栅格 */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

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

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 20px;
  box-shadow: var(--shadow-sm);
}

.panel h3 {
  font-size: 18px;
  color: var(--ink-900);
  margin-bottom: 8px;
}

.panel p {
  color: var(--ink-500);
}

.matrix {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}

.matrix .panel {
  min-height: 180px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  background: #f1f5f9;
  border-radius: var(--radius-sm);
  color: var(--ink-500);
  font-size: 13px;
}

/* 应用场景 */
.scenario-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.scenario {
  border-left: 3px solid var(--accent);
  background: #fff;
  border-radius: var(--radius-sm);
  padding: 18px;
  box-shadow: var(--shadow-sm);
}

.scenario h4 {
  color: var(--ink-900);
  margin-bottom: 6px;
}

.scenario p {
  color: var(--ink-500);
  font-size: 14px;
}

/* 技术架构 */
.architecture {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 24px;
}

.arch-block {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #fff;
  padding: 18px;
}

.arch-block h4 {
  color: var(--ink-900);
  margin-bottom: 10px;
}

.arch-block ul li {
  color: var(--ink-500);
  margin-bottom: 8px;
}

.flow-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.step {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 14px;
  text-align: center;
  box-shadow: var(--shadow-sm);
}

.step strong {
  display: block;
  color: var(--ink-900);
}

.step span {
  color: var(--ink-500);
  font-size: 13px;
}

/* 案例与新闻 */
.case-rail {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 20px;
}

.case-feature {
  position: relative;
  min-height: 320px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background-size: cover;
  background-position: center;
  box-shadow: var(--shadow-md);
}

.case-feature::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 23, 38, 0.4), rgba(11, 23, 38, 0.82));
}

.case-caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 22px;
  color: #fff;
}

.case-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.case-item {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 14px;
  background: #fff;
  box-shadow: var(--shadow-sm);
}

.case-item h4 {
  margin-bottom: 6px;
  color: var(--ink-900);
}

.case-item p {
  color: var(--ink-500);
  font-size: 14px;
}

.news-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.news-card {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 14px;
  padding: 14px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
}

.news-card .date {
  text-align: center;
  color: var(--primary);
  font-weight: 700;
}

.news-card h4 {
  color: var(--ink-900);
  margin-bottom: 6px;
}

.news-card p {
  color: var(--ink-500);
  font-size: 14px;
}

/* 内页布局 */
.page-hero {
  position: relative;
  padding: 90px 0 60px;
  background: linear-gradient(135deg, rgba(12, 74, 110, 0.12), rgba(5, 150, 105, 0.08));
  border-bottom: 1px solid var(--line);
}

.page-hero .title {
  font-size: 34px;
  color: var(--ink-900);
  margin-bottom: 12px;
}

.page-hero .intro {
  color: var(--ink-500);
  max-width: 880px;
}

.page-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 28px;
}

.side-nav {
  position: sticky;
  top: 120px;
  align-self: flex-start;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 18px;
  box-shadow: var(--shadow-sm);
}

.side-nav h3 {
  font-size: 16px;
  color: var(--ink-900);
  margin-bottom: 12px;
}

.side-nav a {
  display: block;
  padding: 10px 8px;
  border-radius: var(--radius-sm);
  color: var(--ink-700);
}

.side-nav a:hover,
.side-nav a.active {
  background: #eef7f3;
  color: var(--accent);
  font-weight: 700;
}

.page-content {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 26px;
  box-shadow: var(--shadow-sm);
}

.page-content h2,
.page-content h3 {
  color: var(--ink-900);
  margin: 18px 0 10px;
}

.page-content p {
  color: var(--ink-500);
  margin-bottom: 14px;
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.stat-block {
  border: 1px solid var(--line);
  background: #f8fafc;
  padding: 14px;
  border-radius: var(--radius-sm);
}

.stat-block strong {
  display: block;
  font-size: 22px;
  color: var(--ink-900);
}

.stat-block span {
  color: var(--ink-500);
  font-size: 13px;
}

/* 表格与表单 */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 14px;
}

th,
td {
  border: 1px solid var(--line);
  padding: 10px 12px;
  text-align: left;
}

th {
  background: #0c4a6e;
  color: #fff;
  font-weight: 600;
}

form label {
  display: block;
  margin-bottom: 6px;
  color: var(--ink-900);
  font-weight: 600;
}

form input,
form textarea {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font-size: 15px;
  background: #fff;
}

form textarea {
  resize: vertical;
  min-height: 140px;
}

/* 联系方式与地图 */
.contact-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.map-placeholder {
  height: 360px;
  background: linear-gradient(135deg, #e2e8f0, #cbd5e1);
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  display: grid;
  place-items: center;
  color: var(--ink-500);
  font-weight: 600;
}

/* 页脚 */
.site-footer {
  background: #0f2435;
  color: #d9e3ed;
  padding: 50px 0 20px;
  margin-top: 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr 1fr;
  gap: 28px;
}

.footer-col h4 {
  color: #fff;
  margin-bottom: 12px;
  font-size: 16px;
}

.footer-col p,
.footer-col li {
  color: #cbd5e1;
  font-size: 14px;
  margin-bottom: 10px;
}

.footer-col a {
  color: #cbd5e1;
}

.footer-col a:hover {
  color: #7dd3fc;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  margin-top: 22px;
  padding-top: 12px;
  text-align: center;
  font-size: 13px;
  color: #94a3b8;
}

/* 响应式 */
@media (max-width: 1100px) {
  .hero-grid,
  .architecture,
  .case-rail,
  .page-layout,
  .contact-split {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    height: 320px;
  }

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

  .scenario-grid,
  .grid-3,
  .grid-4,
  .kpi-row {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  section {
    padding: 60px 0;
  }

  .nav-links {
    gap: 12px;
    font-size: 14px;
  }

  .brand-text strong {
    font-size: 16px;
  }

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

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

  .floating-meta {
    left: 16px;
    right: 16px;
    bottom: 16px;
    align-items: stretch;
  }

  .floating-meta-panel {
    width: 100%;
  }

  .floating-meta-open {
    align-self: flex-end;
  }

  .scenario-grid,
  .grid-3,
  .grid-4,
  .kpi-row {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 540px) {
  .nav-bar {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

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

  .hero-copy h1 {
    font-size: 32px;
  }

  .hero-meta {
    grid-template-columns: 1fr;
  }

  .overlay-panel {
    grid-template-columns: 1fr;
  }

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