/* ============ Design Tokens ============ */
:root {
  /* 亮蓝主题：整体亮蓝背景 + 深蓝文字 */
  --bg: #FFFFFF;          /* 页面主背景：纯白 */
  --bg-soft: #F5F7F9;     /* 次背景：中性极浅灰 */
  --card: #FFFFFF;        /* 卡片：纯白 */
  --card-border: rgba(13, 74, 138, 0.16);
  --ink: #0D3E6E;         /* 文字主色：深海蓝 */
  --muted: #456B8A;       /* 次要文字：蓝灰（加深达标） */
  --accent: #07785A;      /* 能源青绿（深青绿，保对比度） */
  --accent-2: #0B6FD8;    /* 电光蓝（加深保对比度） */
  --accent-dark: #087D5B;
  --line: rgba(13, 74, 138, 0.18);
  --danger: #D64545;
  --radius: 14px;
  --radius-sm: 10px;
  --glow: 0 0 24px rgba(11, 111, 216, 0.22);
  --shadow: 0 10px 30px rgba(13, 62, 110, 0.18);
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-tech: "Orbitron", "Noto Sans SC", sans-serif;
  --font-mono: "JetBrains Mono", "Noto Sans SC", monospace;
  --container: 1120px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* 全局网格背景 + 顶部能量光晕 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(rgba(15, 60, 110, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 60, 110, 0.035) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,0.9), rgba(0,0,0,0.35) 45%, rgba(0,0,0,0.7));
}

body::after {
  content: "";
  position: fixed;
  top: -260px;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 520px;
  z-index: -1;
  background: none;
  pointer-events: none;
}

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

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

::selection { background: var(--accent); color: var(--bg); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ============ 按钮 ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 30px;
  border-radius: 8px;
  font-weight: 500;
  font-size: 1rem;
  font-family: var(--font-body);
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease, border-color 0.18s ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #FFFFFF;
  font-weight: 700;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--glow);
}

.btn-primary:active { transform: translateY(0); }

.btn-ghost {
  border-color: var(--line);
  color: var(--ink);
  background: rgba(255, 255, 255, 0.6);
}

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

.btn-sm { min-height: 40px; padding: 0 20px; font-size: 0.9rem; }
.btn-block { width: 100%; }

/* ============ 导航 ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
}

.nav-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 900;
  font-size: 1.15rem;
  letter-spacing: 0.04em;
}

.nav-logo .accent {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* HOK 品牌 logo 图标（电池+闪电，矢量图） */
.logo-mark {
  width: 34px;
  height: 34px;
  flex: none;
  display: block;
  border-radius: 8px;
  box-shadow: var(--glow);
  transform: translateY(-1px);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 34px;
}

.nav-menu a:not(.btn) {
  font-size: 0.95rem;
  color: var(--muted);
  position: relative;
  transition: color 0.18s ease;
}

.nav-menu a:not(.btn):hover { color: var(--ink); }

.nav-menu a:not(.btn)::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: width 0.22s ease;
}

.nav-menu a:not(.btn):hover::after { width: 100%; }


.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: none;
  border: 0;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--ink);
  transition: transform 0.22s ease;
}

.nav-toggle[aria-expanded="true"] span:first-child { transform: translateY(4px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:last-child { transform: translateY(-4px) rotate(-45deg); }

/* ============ Hero ============ */
.hero {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 100vh;
  min-height: 100svh; /* 移动浏览器工具栏变化时自适应 */
  padding: 88px 0 96px;
  background:
    linear-gradient(180deg, rgba(5, 26, 50, 0.38) 0%, rgba(5, 26, 50, 0.62) 100%),
    url("../images/banners/home.jpg?v=61") center/cover no-repeat;
}

.hero-glow {
  position: absolute;
  top: 10%;
  right: 8%;
  width: 420px;
  height: 420px;
  background: none;
  pointer-events: none;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
  padding-bottom: 72px;
}

.hero-eyebrow {
  font-family: var(--font-tech);
  font-size: 0.8rem;
  letter-spacing: 0.35em;
  color: #5CE0B6;
  margin-bottom: 18px;
}

.hero-title {
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: 0.01em;
  color: #FFFFFF;
  text-shadow: 0 2px 18px rgba(5, 26, 50, 0.35);
}

.hero-title .grad {
  background: linear-gradient(120deg, #4FDBAC, #6CB2FF);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-sub {
  max-width: 540px;
  margin-top: 22px;
  font-size: 1.08rem;
  color: rgba(255, 255, 255, 0.90);
}

.hero-sub p + p { margin-top: 6px; }

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 36px;
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin-top: 44px;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.85);
}

.hero-points li { position: relative; padding-left: 18px; }

.hero-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}

/* ---- CSS 电池图形 ---- */
.hero-battery {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 320px;
  text-decoration: none;
  cursor: pointer;
  border-radius: 16px;
  transition: transform 0.3s ease;
}
.hero-battery:hover {
  transform: translateY(-4px);
}
.hero-battery:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 6px;
}

.battery {
  position: relative;
  z-index: 2;
  width: 200px;
  filter: drop-shadow(0 0 30px rgba(10, 155, 114, 0.25));
}

.battery-cap {
  width: 36px;
  height: 14px;
  margin: 0 auto;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-radius: 4px 4px 0 0;
}

.battery-shell {
  position: relative;
  height: 300px;
  border: 3px solid rgba(11, 111, 216, 0.6);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.55);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.battery-fill {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 92%;
  background: linear-gradient(to top, rgba(10, 155, 114, 0.82), rgba(11, 111, 216, 0.42));
  animation: charge 4.5s ease-in-out infinite;
  transform-origin: bottom;
}

@keyframes charge {
  0%, 100% { transform: scaleY(1); }
  50% { transform: scaleY(0.9); }
}

.battery-shine {
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(255, 255, 255, 0.08) 50%, transparent 70%);
}

.battery-pct {
  position: relative;
  z-index: 2;
  font-family: var(--font-tech);
  font-size: 2.6rem;
  font-weight: 700;
  color: #FFFFFF;
  text-shadow: 0 2px 12px rgba(13, 62, 110, 0.55);
}

.battery-label {
  position: absolute;
  bottom: 16px;
  left: 0;
  right: 0;
  z-index: 2;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  color: rgba(255, 255, 255, 0.95);
  text-shadow: 0 1px 6px rgba(13, 62, 110, 0.6);
}

.orbit {
  position: absolute;
  border: 1px dashed rgba(11, 111, 216, 0.35);
  border-radius: 50%;
}

.orbit-a { width: 340px; height: 340px; animation: spin 26s linear infinite; }
.orbit-b { width: 440px; height: 440px; animation: spin 40s linear infinite reverse; }

.orbit::before {
  content: "";
  position: absolute;
  top: -5px;
  left: 50%;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: var(--glow);
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ============ 区块通用 ============ */
.section { padding: 42px 24px; }

/* 应用领域紧贴产品展示下方 */
#products { padding-bottom: 32px; }
#applications { padding-top: 0; }

.section-head { margin-bottom: 48px; }

.section-eyebrow {
  font-family: var(--font-tech);
  font-size: 0.78rem;
  letter-spacing: 0.32em;
  color: var(--accent-2);
  margin-bottom: 8px;
}

.section-head h2 {
  font-size: clamp(1.7rem, 4vw, 2.3rem);
  font-weight: 900;
}

/* ============ 关于我们 ============ */
.about-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 52px;
  align-items: start;
}

.about-text .lead {
  font-size: 1.3rem;
  font-weight: 700;
  line-height: 1.6;
  margin-bottom: 20px;
}

.about-text p:not(.lead) { color: var(--muted); margin-bottom: 16px; }
.about-text .btn { margin-top: 12px; }

.about-cards { display: grid; gap: 14px; }

.mini-card {
  display: flex;
  gap: 18px;
  align-items: center;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  padding: 20px 22px;
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.mini-card:hover {
  transform: translateX(6px);
  border-color: var(--accent);
  box-shadow: var(--shadow);
}

.mini-num {
  font-family: var(--font-tech);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
  min-width: 72px;
}

.mini-card h3 { font-size: 1rem; }
.mini-card p { font-size: 0.85rem; color: var(--muted); }

/* ============ 产品中心 ============ */
.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  /* 四列同行，与区块内容同宽，左右边缘与其他区块完全对齐 */
}

.product-card {
  display: flex;
  flex-direction: column;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 22px 16px;
  min-width: 0; /* 防止单卡内容把网格列撑宽，保证四卡等宽 */
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.product-card:hover {
  transform: translateY(-6px);
  border-color: rgba(10, 155, 114, 0.55);
  box-shadow: var(--shadow), var(--glow);
}

.product-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
  background: rgba(11, 111, 216, 0.10);
  border: 1px solid rgba(11, 111, 216, 0.28);
}

.icon-power { background: rgba(10, 155, 114, 0.14); border-color: rgba(10, 155, 114, 0.4); }

/* 简易 CSS 图标 */
.icon-bolt {
  width: 18px; height: 24px;
  background: var(--accent);
  clip-path: polygon(60% 0, 0 60%, 40% 60%, 35% 100%, 100% 35%, 55% 35%);
}

.icon-grid {
  width: 24px; height: 24px;
  background:
    linear-gradient(var(--accent-2), var(--accent-2)) 0 0/8px 8px no-repeat,
    linear-gradient(var(--accent-2), var(--accent-2)) 100% 0/8px 8px no-repeat,
    linear-gradient(var(--accent-2), var(--accent-2)) 0 100%/8px 8px no-repeat,
    linear-gradient(var(--accent-2), var(--accent-2)) 100% 100%/8px 8px no-repeat,
    linear-gradient(var(--accent-2), var(--accent-2)) center/8px 8px no-repeat;
}

.icon-chip {
  width: 24px; height: 24px;
  border: 3px solid var(--accent-2);
  border-radius: 4px;
  position: relative;
}

.icon-chip::after {
  content: "";
  position: absolute;
  inset: 5px;
  background: var(--accent-2);
  border-radius: 2px;
}

/* 充电器插头图标：双插脚 + 圆角主体 + 指示灯 */
.icon-plug {
  width: 22px;
  height: 24px;
  position: relative;
}

.icon-plug::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 16px;
  background:
    radial-gradient(circle at 50% 6px, #fff 0, #fff 2px, transparent 3px),
    var(--accent-2);
  border-radius: 4px 4px 6px 6px;
}

.icon-plug::after {
  content: "";
  position: absolute;
  top: 0;
  left: 4px;
  width: 14px;
  height: 8px;
  background:
    linear-gradient(var(--accent-2), var(--accent-2)) 0 0 / 4px 100% no-repeat,
    linear-gradient(var(--accent-2), var(--accent-2)) 10px 0 / 4px 100% no-repeat;
}

.product-card h3 { font-size: 1.18rem; font-weight: 700; margin-bottom: 8px; }

.product-desc {
  font-size: 0.92rem;
  color: var(--muted);
  margin-bottom: 20px;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
  margin-bottom: 18px;
}

.spec-table th {
  text-align: left;
  font-weight: 400;
  color: var(--muted);
  padding: 6px 0;
  border-bottom: 1px dashed var(--line);
  white-space: nowrap;
  padding-right: 8px;
  width: 1%;
}

.spec-table td {
  padding: 8px 0;
  border-bottom: 1px dashed var(--line);
  font-family: var(--font-mono);
  color: var(--accent);
}

.product-link {
  margin-top: auto;
  font-size: 0.9rem;
  color: var(--accent-2);
  transition: color 0.18s ease, letter-spacing 0.18s ease;
}

.product-link:hover { color: var(--accent); letter-spacing: 0.04em; }

/* ============ 核心技术 ============ */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.tech-card {
  position: relative;
  background: linear-gradient(180deg, var(--card), var(--bg-soft));
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 34px 30px;
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.tech-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow), var(--glow);
}

.tech-num {
  position: absolute;
  top: 14px;
  right: 20px;
  font-family: var(--font-tech);
  font-size: 2.4rem;
  font-weight: 700;
  color: rgba(15, 60, 110, 0.08);
}

.tech-card h3 { font-size: 1.15rem; margin-bottom: 10px; }
.tech-card p { font-size: 0.94rem; color: var(--muted); max-width: 420px; }

/* ============ 资质认证 ============ */
.cert-wall {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px 14px;
}

/* 桌面端确保 10 徽章单行完整（92*10+14*9=1046 < 1072） */
@media (min-width: 961px) {
  .cert-wall { justify-content: space-between; }
}

.cert-card {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 92px;
  height: 92px;
  background: #FFFFFF;
  border: 1px solid var(--card-border);
  border-radius: 50%;
  overflow: hidden;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.cert-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.cert-card:hover {
  transform: translateY(-4px);
  border-color: rgba(10, 155, 114, 0.65);
  box-shadow: var(--shadow), var(--glow);
}

@media (max-width: 640px) {
  .orbit { display: none; }
  .cert-card { width: 68px; height: 68px; }
}

/* 窄屏防挤压：徽章等比缩小，不换行错位 */
@media (max-width: 400px) {
  .cert-card { width: 56px; height: 56px; }
}

/* ============ 联系我们 ============ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 48px;
  align-items: start;
}

.contact-info h3 { font-size: 1.4rem; font-weight: 900; margin-bottom: 12px; }
.contact-info > p { color: var(--muted); margin-bottom: 26px; max-width: 420px; }

.contact-list { display: grid; gap: 16px; }

.contact-list li {
  display: flex;
  gap: 18px;
  font-size: 0.95rem;
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--line);
}

.contact-k {
  min-width: 64px;
  color: var(--muted);
}

.contact-list a { color: var(--accent-2); transition: color 0.18s ease; }
.contact-list a:hover { color: var(--accent); }

/* 表单 */

.form-error-global {
  margin-top: 12px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  background: rgba(248, 113, 113, 0.1);
  border: 1px solid rgba(248, 113, 113, 0.4);
  color: var(--danger);
  font-size: 0.9rem;
}

button[disabled] { opacity: 0.6; cursor: not-allowed; }

.contact-form {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 17px 17px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}


.form-field { margin-bottom: 4px; }

.form-field label {
  display: block;
  font-size: 0.88rem;
  color: var(--muted);
  margin-bottom: 4px;
}

.form-field input,
.form-field textarea {
  width: 100%;
  min-height: 40px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 0.95rem;
  padding: 8px 10px;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
  resize: vertical;
}

.form-field input::placeholder,
.form-field textarea::placeholder { color: rgba(140, 160, 184, 0.6); }

.form-field input:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(10, 155, 114, 0.18);
}

.form-field input.invalid,
.form-field textarea.invalid { border-color: var(--danger); }

.form-error {
  min-height: 0.6em;
  margin-top: 2px;
  font-size: 0.8rem;
  color: var(--danger);
}

.form-success {
  margin-top: 16px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  background: rgba(10, 155, 114, 0.12);
  border: 1px solid rgba(10, 155, 114, 0.45);
  color: var(--accent);
  font-size: 0.9rem;
}

/* ============ Footer ============ */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 44px 0 32px;
  background: #F7F9FB;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 28px;
}

.footer-brand p {
  margin-top: 10px;
  font-size: 0.88rem;
  color: var(--muted);
}

.footer-copy {
  width: 100%;
  margin-top: 0;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
  font-size: 0.82rem;
  color: var(--muted);
  line-height: 1.8;
}
.footer-copy .gongan-badge {
  display: inline-block;
  width: 14px;
  height: 14px;
  vertical-align: -2px;
  margin-right: 4px;
}

/* ============ 动效 ============ */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.22, 0.61, 0.36, 1);
}

.hero .reveal {
  transition-delay: calc(0.12s * var(--d, 0));
}

.reveal.visible { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .battery-fill, .orbit-a, .orbit-b { animation: none; }
}

/* ============ 应用领域 ============ */
.app-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.app-card {
  display: flex;
  flex-direction: column;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 28px 26px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.app-card:hover {
  transform: translateY(-5px);
  border-color: rgba(10, 155, 114, 0.55);
  box-shadow: var(--shadow), var(--glow);
}

.app-icon {
  width: 50px;
  height: 50px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  background: rgba(11, 111, 216, 0.10);
  border: 1px solid rgba(11, 111, 216, 0.28);
}

.app-card h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; }
.app-card p { font-size: 0.88rem; color: var(--muted); }

/* 应用图标（纯 CSS） */
.icon-pin {
  width: 14px; height: 14px;
  border: 3px solid var(--accent-2);
  border-radius: 50% 50% 50% 0;
  transform: rotate(-45deg);
}

.icon-hand {
  width: 18px; height: 22px;
  border: 3px solid var(--accent-2);
  border-radius: 8px 8px 4px 4px;
}

.icon-wave {
  width: 8px; height: 8px;
  background: var(--accent-2);
  border-radius: 50%;
  position: relative;
}

/* 中心点外两道递增信号弧 */
.icon-wave::before {
  content: "";
  position: absolute;
  inset: -7px;
  border: 2.5px solid var(--accent-2);
  border-radius: 50%;
  border-left-color: transparent;
  border-right-color: transparent;
  border-bottom-color: transparent;
}

.icon-wave::after {
  content: "";
  position: absolute;
  inset: -14px;
  border: 2.5px solid var(--accent-2);
  border-radius: 50%;
  border-left-color: transparent;
  border-right-color: transparent;
  border-bottom-color: transparent;
}

.icon-watch {
  width: 18px; height: 18px;
  border: 3px solid var(--accent-2);
  border-radius: 50%;
  position: relative;
}

.icon-watch::before {
  content: "";
  position: absolute;
  top: -9px; left: 50%;
  transform: translateX(-50%);
  width: 8px; height: 4px;
  background: var(--accent-2);
  border-radius: 2px;
}

.icon-watch::after {
  content: "";
  position: absolute;
  bottom: -9px; left: 50%;
  transform: translateX(-50%);
  width: 8px; height: 4px;
  background: var(--accent-2);
  border-radius: 2px;
}

.icon-cross {
  width: 22px; height: 8px;
  background: var(--accent-2);
  position: relative;
  border-radius: 2px;
}

.icon-cross::after {
  content: "";
  position: absolute;
  top: 7px; left: 7px;
  width: 8px; height: 22px;
  background: var(--accent-2);
  border-radius: 2px;
}

.icon-cube {
  width: 20px; height: 20px;
  border: 3px solid var(--accent-2);
  transform: rotate(45deg);
}

/* ============ 解决方案 ============ */
.section-sub {
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.95rem;
}


/* 核心能力 */
.sol-caps {
  margin-top: 22px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.sol-cap {
  background: #FFFFFF;
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 22px 24px;
}

.sol-cap h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--accent);
}

.sol-cap p { font-size: 0.88rem; color: var(--muted); }

.sol-cta {
  margin-top: 26px;
  text-align: center;
  font-size: 0.95rem;
  color: var(--muted);
}

.sol-cta a {
  color: var(--accent-2);
  font-weight: 600;
  text-decoration: none;
}

.sol-cta a:hover { text-decoration: underline; }

@media (max-width: 980px) {
  .sol-grid { grid-template-columns: 1fr 1fr; }
  .sol-caps { grid-template-columns: 1fr; }
}

@media (max-width: 680px) {
  .sol-grid { grid-template-columns: 1fr; }
}

/* ============ 最新资讯 ============ */
.news-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.news-card {
  display: flex;
  flex-direction: column;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 26px 24px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.news-card:hover {
  transform: translateY(-5px);
  border-color: rgba(10, 155, 114, 0.55);
  box-shadow: var(--shadow), var(--glow);
}

.news-date {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 16px;
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--line);
}

.news-date b {
  font-family: var(--font-tech);
  font-size: 2rem;
  font-weight: 700;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.news-date span {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--muted);
}

.news-card h3 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  font-size: 1.02rem;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 10px;
}

.news-card p { font-size: 0.88rem; color: var(--muted); margin-bottom: 16px; }

.news-more {
  margin-top: auto;
  font-size: 0.88rem;
  color: var(--accent-2);
  transition: color 0.18s ease, letter-spacing 0.18s ease;
}

.news-card:hover .news-more { color: var(--accent); letter-spacing: 0.04em; }

/* ============ 常见问题 ============ */
.faq-list { display: grid; gap: 14px; max-width: 860px; }

.faq-item {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: border-color 0.2s ease;
}

.faq-item[open] { border-color: rgba(10, 155, 114, 0.5); }

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  list-style: none;
  min-height: 48px;
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; }

.faq-arrow {
  flex: none;
  width: 10px; height: 10px;
  border-right: 2.5px solid var(--accent-2);
  border-bottom: 2.5px solid var(--accent-2);
  transform: rotate(45deg);
  transition: transform 0.22s ease;
}

.faq-item[open] .faq-arrow { transform: rotate(-135deg); }

.faq-body { padding: 0 24px 22px; }

.faq-body p { font-size: 0.94rem; color: var(--muted); }

/* ============ 定制流程 ============ */
.process-wrap {
  margin-top: 24px;
  margin-bottom: 76px;
  padding-top: 0;
}

.process-head { margin-bottom: 40px; }

.process-head h3 {
  font-size: clamp(1.4rem, 3vw, 1.8rem);
  font-weight: 900;
}

.process {
  position: relative;
  display: grid;
  grid-template-columns: repeat(9, 1fr);
  gap: 12px;
  list-style: none;
  counter-reset: none;
}

/* 连接线：横穿节点圆心，青绿→电光蓝渐变 */
.process::before {
  content: "";
  position: absolute;
  top: 24px;
  left: calc(100% / 18);
  right: calc(100% / 18);
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  opacity: 0.5;
}

.step {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.step-node {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--bg-soft);
  border: 1.5px solid rgba(11, 111, 216, 0.5);
  font-family: var(--font-tech);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent-2);
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease, color 0.18s ease;
}

.step:hover .step-node {
  transform: translateY(-3px);
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: var(--glow);
}

.step-text {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-top: 14px;
}

.step-name { font-size: 0.95rem; font-weight: 700; }

.step-desc {
  margin-top: 8px;
  font-size: 0.72rem;
  color: var(--muted);
  line-height: 1.5;
}

/* 窄屏：转为竖向时间线 */
@media (max-width: 960px) {
  .process { grid-template-columns: 1fr; gap: 0; }

  .process::before {
    top: 36px;
    bottom: 36px;
    left: 23px;
    right: auto;
    width: 2px;
    height: auto;
    background: linear-gradient(180deg, var(--accent), var(--accent-2));
  }

  .step {
    display: grid;
    grid-template-columns: 48px 1fr;
    column-gap: 18px;
    align-items: center;
    text-align: left;
    padding: 12px 0;
  }

  .step-text { align-items: flex-start; margin-top: 0; }
}

/* ============ 锚点目标 ============ */
/* ============ 页脚补充 ============ */
.footer-contact p {
  font-size: 0.88rem;
  color: var(--muted);
  line-height: 1.9;
}

/* 页脚网址链接：平时与正文同色，悬停变亮提示可点击 */
.footer-contact a:hover { color: var(--accent-2); text-decoration: underline; }

/* ============ 响应式 ============ */
@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-battery { min-height: 380px; }
  .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .product-grid { grid-template-columns: 1fr 1fr; }
  .tech-grid { grid-template-columns: 1fr; }
  .app-grid { grid-template-columns: 1fr 1fr; }
  /* 移动端行业资讯：一行两个 */
  .news-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .news-card { padding: 18px 14px; }
  .news-card h3 { font-size: 0.9rem; line-height: 1.4; margin-bottom: 8px; }
  .news-card p { font-size: 0.78rem; line-height: 1.45; margin-bottom: 12px; }
  .news-date { margin-bottom: 12px; padding-bottom: 10px; gap: 8px; }
  .news-date b { font-size: 1.6rem; }
  .news-more { font-size: 0.8rem; }
}

@media (max-width: 640px) {
  .hero { min-height: 100vh; min-height: 100svh; padding: 56px 0 64px; }
  .section { padding: 28px 24px; }
  .product-grid { grid-template-columns: 1fr; }
  /* 移动端应用领域：一行两个 */
  .app-grid { grid-template-columns: 1fr 1fr; gap: 14px; }
  .app-card { padding: 18px 14px; }
  .app-card h3 { font-size: 0.92rem; margin-bottom: 6px; }
  .app-card p { font-size: 0.78rem; line-height: 1.45; }
  .app-icon { margin-bottom: 12px; }
  .form-row { grid-template-columns: 1fr; gap: 0; }
  .contact-form { padding: 15px 13px; }
  .footer-inner { flex-direction: column; gap: 28px; }

  .nav-toggle { display: flex; }

  .nav-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    padding: 0 24px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
  }

  .nav-menu.open { max-height: 480px; padding-bottom: 16px; }

  .nav-menu li { border-top: 1px solid var(--line); }
  .nav-menu li:first-child { border-top: 0; }

  .nav-menu a:not(.btn) {
    display: block;
    padding: 14px 0;
    min-height: 44px;
  }

  .nav-menu > li:last-child { padding: 14px 0 0; }
  .nav-menu .btn { width: auto; }
}

/* ============ 导航产品下拉菜单 ============ */
.has-drop { position: relative; }

.caret {
  display: inline-block;
  font-size: 0.7em;
  margin-left: 5px;
  vertical-align: 1px;
}

.nav-drop {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 210px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: 0 12px 30px rgba(13, 62, 110, 0.14);
  padding: 8px;
  list-style: none;
  margin: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
  z-index: 120;
}

.has-drop:hover .nav-drop,
.has-drop.hov .nav-drop,
.has-drop.open .nav-drop,
.has-drop:focus-within .nav-drop {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.nav-drop a {
  display: block;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 0.9rem;
  white-space: nowrap;
  color: var(--muted);
  text-decoration: none;
  transition: background 0.15s ease, color 0.15s ease;
}

.nav-drop a:hover { background: var(--surface); color: var(--ink); }
.nav-drop a::after { display: none; }

/* ============ 产品图片墙 ============ */
.product-wall { grid-template-columns: repeat(4, 1fr); }

.wall-card {
  display: block;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  overflow: hidden;
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.wall-card:hover {
  transform: translateY(-5px);
  border-color: rgba(10, 155, 114, 0.55);
  box-shadow: var(--shadow), var(--glow);
}

.wall-card img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  display: block;
}

.wall-card h3 {
  padding: 14px 16px;
  margin: 0;
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--ink);
  text-align: center;
  background: var(--card);
}

/* ============ 产品详情页 ============ */
.product-page { padding-top: 56px; padding-bottom: 88px; }

.product-page .section-head h1,
.solution-page .section-head h1 {
  font-size: clamp(1.7rem, 4vw, 2.3rem);
  font-weight: 900;
}

.product-detail {
  display: grid;
  grid-template-columns: 420px 1fr;
  gap: 40px;
  align-items: start;
  margin-top: 30px;
}

.product-photo img {
  width: 100%;
  border-radius: var(--radius);
  border: 1px solid var(--card-border);
}

.product-page-desc {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--ink);
  margin-bottom: 18px;
}

/* 产品页规格值用正文色，保持与整站文字风格一致 */
.product-page-spec { margin-bottom: 24px; }

.product-page-spec td { color: var(--ink); }

.product-page-spec th { color: var(--muted); }

.product-page-cta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.product-page-apps { margin-top: 46px; }

.product-page-apps h2 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 14px;
}

.app-tags { display: flex; flex-wrap: wrap; gap: 10px; }

.app-tags span {
  padding: 8px 18px;
  border-radius: 999px;
  background: #FFFFFF;
  border: 1px solid var(--card-border);
  color: var(--muted);
  font-size: 0.9rem;
}

/* 移动端：汉堡菜单模式（断点提升到 920px，避免 8 项导航拥挤） */
@media (max-width: 920px) {
  .nav-toggle { display: flex; }

  .nav-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    padding: 0 24px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
  }

  .nav-menu.open {
    max-height: min(760px, calc(100vh - 64px));
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 16px;
  }

  .nav-menu li { border-top: 1px solid var(--line); }
  .nav-menu li:first-child { border-top: 0; }

  .nav-menu a:not(.btn) {
    display: block;
    padding: 14px 0;
    min-height: 44px;
  }

  .nav-menu > li:last-child { padding: 14px 0 0; }
  .nav-menu .btn { width: auto; }

  .nav-drop {
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    box-shadow: none;
    border: none;
    background: none;
    padding: 0 0 4px 18px;
    min-width: 0;
    max-height: none;
  }

  .nav-drop li { border-top: 0 !important; }

  .nav-drop a {
    display: block;
    padding: 11px 0;
    min-height: 42px;
    font-size: 0.9rem;
  }
}

@media (max-width: 900px) {
  .product-detail { grid-template-columns: 1fr; }
}

/* ============ 解决方案页（列表+详情） ============ */
.solution-page { padding-top: 56px; }

.crumbs {
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 18px;
}

.crumbs a {
  color: var(--accent-2);
  text-decoration: none;
}

.crumbs a:hover { text-decoration: underline; }

/* 列表卡片可整体点击 */
.sol-card.sol-link { text-decoration: none; color: var(--ink); }

/* 方案详情：引言 */
.sol-intro {
  position: relative;
  margin: 26px 0 44px;
  padding: 22px 26px 22px 30px;
  background: #FFFFFF;
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  font-size: 1.05rem;
  line-height: 1.9;
  color: var(--ink);
}

.sol-intro::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  bottom: 14px;
  width: 4px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--accent), var(--accent-2));
}

/* 方案亮点 */
.sol-highlights {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-bottom: 46px;
}

.sol-hl {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 22px 20px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.sol-hl:hover {
  transform: translateY(-4px);
  border-color: rgba(10, 155, 114, 0.55);
  box-shadow: var(--shadow), var(--glow);
}

.sol-hl h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 8px;
}

.sol-hl p { font-size: 0.87rem; color: var(--muted); }

.sol-sec-title {
  font-size: 1.35rem;
  font-weight: 800;
  margin: 0 0 18px;
}

/* 推荐产品 */
.sol-products {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-bottom: 40px;
}

.sol-prod {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 14px;
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.sol-prod:hover {
  transform: translateY(-4px);
  border-color: rgba(10, 155, 114, 0.55);
  box-shadow: var(--shadow), var(--glow);
}

.sol-prod img {
  width: 72px;
  height: 72px;
  object-fit: cover;
  border-radius: 10px;
  border: 1px solid var(--card-border);
  flex-shrink: 0;
}

.sol-prod h3 {
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--ink);
  margin: 0 0 4px;
}

.sol-prod p {
  font-size: 0.82rem;
  color: var(--accent-2);
  margin: 0;
}

@media (max-width: 980px) {
  .sol-highlights { grid-template-columns: 1fr 1fr; }
  .sol-products { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 680px) {
  .sol-highlights { grid-template-columns: 1fr; }
  .sol-products { grid-template-columns: 1fr; }
  .sol-intro { font-size: 0.98rem; }
  /* 移动端产品墙：一行 2 个，避免 4 个挤成一排 */
  .product-wall { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .wall-card h3 { font-size: 0.95rem; padding: 12px 10px; }
}

/* ============ 关于我们页一体式头部 ============ */
.about-hero {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 100vh;
  min-height: 100svh;
  padding: 64px 0;
  background:
    linear-gradient(180deg, rgba(5, 26, 50, 0.38) 0%, rgba(5, 26, 50, 0.62) 100%),
    url("../images/banners/about.jpg?v=61") center/cover no-repeat;
}
.about-hero .container {
  position: relative;
  z-index: 1;
}
.about-hero-title {
  margin-top: 12px;
  font-size: clamp(1.9rem, 4vw, 2.7rem);
  font-weight: 900;
  line-height: 1.2;
  color: #FFFFFF;
  text-shadow: 0 2px 16px rgba(5, 26, 50, 0.35);
}
.about-hero-sub {
  margin-top: 14px;
  max-width: 640px;
  font-size: 1.02rem;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.88);
}
/* 整页一体式：内容全部叠加在背景墙上 */
.about-hero--full {
  padding: 64px 0 84px;
}
.about-hero--full .about-grid {
  margin-top: 48px;
}
.about-hero .about-text .lead {
  color: #5CE0B6;
}
.about-hero .about-text p:not(.lead) {
  color: rgba(255, 255, 255, 0.88);
}
@media (max-width: 920px) {
  .about-hero { min-height: 100vh; min-height: 100svh; padding: 48px 0 56px; }
  .about-hero--full { padding: 48px 0 64px; }
  .about-hero--full .about-grid { margin-top: 36px; gap: 32px; }
  .about-hero-sub { font-size: 0.95rem; }
}

/* ============ 样板风格：浅蓝圆角板块体系（解决方案页） ============ */
.gd-block {
  background: linear-gradient(180deg, #EAF3FC, #E3EEF9);
  border-radius: 18px;
  padding: 44px 48px;
  margin-top: 44px;
}
.gd-block-title {
  text-align: center;
  font-size: 1.55rem;
  font-weight: 900;
  color: var(--ink);
  margin-bottom: 22px;
}
.gd-block-sub {
  text-align: center;
  color: var(--muted);
  font-size: 0.95rem;
  margin: -12px 0 22px;
}
.gd-block p {
  color: #33526E;
  line-height: 2;
  font-size: 0.98rem;
  max-width: 1080px;
  margin: 0 auto;
}
.gd-block p + p { margin-top: 14px; }

/* 技术图解板块：左化学创新 / 右工艺创新 / 底功能实现 */
.gd-tech-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  margin-top: 6px;
}
.gd-tech-col {
  background: #FFFFFF;
  border: 1px solid rgba(13, 74, 138, 0.10);
  border-radius: 14px;
  padding: 26px 28px;
}
.gd-tech-col h4 {
  font-size: 1.12rem;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.gd-tech-col h4::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 3px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}
.gd-tech-col:nth-child(2) h4 { color: var(--accent-2); }
.gd-tech-col:nth-child(2) h4::before { background: linear-gradient(135deg, var(--accent-2), #4DA3E8); }
.gd-tech-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.gd-tech-chips span {
  background: linear-gradient(135deg, rgba(7, 120, 90, 0.08), rgba(11, 111, 216, 0.10));
  border: 1px solid rgba(13, 74, 138, 0.14);
  color: #24527A;
  border-radius: 999px;
  padding: 8px 16px;
  font-size: 0.92rem;
}
.gd-tech-bottom {
  margin-top: 24px;
  background: #FFFFFF;
  border: 1px solid rgba(13, 74, 138, 0.10);
  border-radius: 14px;
  padding: 24px 28px;
}
.gd-tech-bottom h4 {
  font-size: 1.12rem;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: 16px;
}
.gd-tech-bottom .gd-tech-chips span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

/* 深蓝收尾横幅 */
.gd-banner-blue {
  margin-top: 44px;
  border-radius: 18px;
  padding: 40px 32px;
  text-align: center;
  color: #FFFFFF;
  background:
    radial-gradient(circle at 12% 20%, rgba(11, 111, 216, 0.45), transparent 50%),
    radial-gradient(circle at 88% 80%, rgba(7, 120, 90, 0.40), transparent 50%),
    linear-gradient(135deg, #0B2A4D, #0D3E6E);
}
.gd-banner-blue p {
  max-width: 1100px;
  margin: 0;
  text-align: left;
  font-size: 1.12rem;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.94);
}

/* 应用标签：圆角胶囊 */
.gd-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 20px;
}
.gd-tags span {
  background: #FFFFFF;
  border: 1px solid rgba(13, 74, 138, 0.16);
  color: #24527A;
  border-radius: 999px;
  padding: 9px 20px;
  font-size: 0.93rem;
}

@media (max-width: 920px) {
  .gd-block { padding: 30px 20px; margin-top: 30px; }
  .gd-block-title { font-size: 1.3rem; }
  .gd-tech-cols { grid-template-columns: 1fr; gap: 16px; }
  .gd-banner-blue { padding: 30px 22px; }
  .gd-banner-blue p { font-size: 0.98rem; }
}

/* ============ 解决方案一体式头部（列表页与详情页） ============ */
.sol-hero {
  position: relative;
  display: flex;
  align-items: flex-start;
  min-height: 320px;
  padding: 46px 0 64px;
  background:
    linear-gradient(180deg, rgba(5, 26, 50, 0.42) 0%, rgba(5, 26, 50, 0.70) 100%),
    var(--sol-bg, #0B2A4D) center/cover no-repeat;
}
.sol-hero .container {
  position: relative;
  z-index: 1;
  margin: 0 auto;
  width: 100%;
}
.sol-hero-eyebrow {
  font-family: var(--font-tech);
  font-size: 0.8rem;
  letter-spacing: 0.35em;
  color: #5CE0B6;
  margin-bottom: 14px;
}
.sol-hero-title {
  font-size: clamp(2rem, 4.5vw, 3rem);
  font-weight: 900;
  color: #FFFFFF;
  text-shadow: 0 2px 16px rgba(5, 26, 50, 0.35);
}
.sol-hero-sub {
  margin-top: 14px;
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.88);
}
.sol-hero-slogan {
  margin-top: 12px;
  font-size: 1.15rem;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.92);
}
@media (max-width: 920px) {
  .sol-hero { min-height: 0; padding: 36px 0 46px; }
  .sol-hero-sub { font-size: 0.95rem; }
}

/* ============ 方案大卡（列表页） ============ */
.sol-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 26px;
  margin-top: 36px;
}
.sol-card {
  position: relative;
  display: grid;
  grid-template-columns: 50px 1fr 28px;
  gap: 24px;
  align-items: center;
  background: #FFFFFF;
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 30px 28px;
  text-decoration: none;
  overflow: hidden;
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}
.sol-card::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--accent), var(--accent-2));
  opacity: 0;
  transition: opacity 0.22s ease;
}
.sol-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: rgba(7, 120, 90, 0.35);
}
.sol-card:hover::before { opacity: 1; }
/* 列表页图标与首页应用领域图标保持一致 */
.sol-card .app-icon { margin-bottom: 0; flex-shrink: 0; }
.sol-card-body h3 {
  font-size: 1.22rem;
  font-weight: 800;
  color: var(--ink);
  margin-bottom: 10px;
}
.sol-card-body p {
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.7;
  margin-bottom: 12px;
}
.sol-card-tag {
  display: inline-block;
  font-size: 0.78rem;
  color: var(--accent);
  background: rgba(7, 120, 90, 0.08);
  border: 1px solid rgba(7, 120, 90, 0.18);
  border-radius: 999px;
  padding: 4px 12px;
}
.sol-card-arrow {
  color: var(--accent-2);
  font-size: 1.3rem;
  transition: transform 0.22s ease;
}
.sol-card:hover .sol-card-arrow { transform: translateX(4px); }
@media (max-width: 920px) {
  .sol-grid { grid-template-columns: 1fr; gap: 18px; }
  .sol-card { grid-template-columns: 64px 1fr 22px; gap: 16px; padding: 22px 18px; }
}

/* ============ 页面背景墙（banner 横幅） ============ */
.page-banner {
  width: 100%;
  height: 240px;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  position: relative;
}
.page-banner::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 45%;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0), var(--bg));
  pointer-events: none;
}
/* 首页大气豪华背景墙 */
.page-banner--grand {
  height: 380px;
}
.page-banner--grand::after {
  height: 32%;
}
@media (max-width: 920px) {
  .page-banner { height: 160px; }
  .page-banner--grand { height: 200px; }
}

/* ============ 独立页（FAQ/关于我们）标题 ============ */
.page-title {
  font-size: clamp(1.7rem, 4vw, 2.3rem);
  font-weight: 900;
  margin: 0;
}

/* ============ 921~1200px 中宽屏：压缩导航间距避免拥挤 ============ */
@media (max-width: 1200px) and (min-width: 921px) {
  .nav-menu { gap: 12px; }
  .nav-menu a:not(.btn) { font-size: 0.88rem; }
}

/* ============ 1200px 以下隐藏 hero 轨道装饰，避免横向溢出 ============ */
@media (max-width: 1200px) {
  .orbit { display: none; }
}

/* ============ 技术研发页：定制研发流程 ============ */
.rnd-flow {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  margin-bottom: 46px;
}

.rnd-step {
  position: relative;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 24px 18px 20px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.rnd-step:hover {
  transform: translateY(-4px);
  border-color: rgba(10, 155, 114, 0.55);
  box-shadow: var(--shadow), var(--glow);
}

.rnd-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  font-weight: 800;
  font-size: 1rem;
  margin-bottom: 12px;
}

.rnd-step h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.rnd-step p {
  font-size: 0.85rem;
  color: var(--muted);
}

@media (max-width: 980px) {
  .rnd-flow { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .rnd-flow { grid-template-columns: 1fr; }
}

/* ============ 解决方案详情：行业背景段落 ============ */
.sol-story {
  margin-bottom: 40px;
}

.sol-story p {
  font-size: 0.98rem;
  line-height: 1.95;
  color: var(--ink);
  margin-bottom: 14px;
  text-align: justify;
}

.sol-story p:last-child { margin-bottom: 0; }