/* ===== 港口操作设备官网 · 风格对齐 winve.cn ===== */
:root {
  --deep: #0b2a52;        /* 深蓝（顶栏/主色） */
  --deep-2: #10366b;
  --cyan: #0ea5e9;        /* 蓝青渐变起点 */
  --cyan-2: #22d3ee;      /* 蓝青渐变终点 */
  --grad: linear-gradient(120deg, #2563eb 0%, #0ea5e9 55%, #22d3ee 100%);
  --ink: #0f2740;
  --muted: #5b6b82;
  --card: #ffffff;
  --grid: #e6f2ff;
  --tint: #f4f9ff;
  --line: #e2ecf7;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(11, 42, 82, 0.08);
  --orange: #ea7a1f;
  --orange-bg: #fff6ec;
  --font-disp: 'Space Grotesk', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: 'Outfit', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--tint);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
.container { width: min(1140px, 92%); margin: 0 auto; }

/* 浅蓝网格背景（winve.cn 风格） */
.page-bg {
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(1200px 500px at 15% -10%, rgba(37, 99, 235, 0.10), transparent 60%),
    radial-gradient(1000px 500px at 90% 0%, rgba(34, 211, 238, 0.10), transparent 55%),
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: auto, auto, 34px 34px, 34px 34px;
}

/* ===== 顶栏 ===== */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(11, 42, 82, 0.97);
  backdrop-filter: blur(8px);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
}
.nav-wrap { display: flex; align-items: center; gap: 24px; height: 68px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; }
.brand-logo { height: 30px; width: auto; }
.brand-text { color: #fff; font-weight: 500; font-size: 14px; font-family: var(--font-body); letter-spacing: 0.5px; }
.nav { display: flex; gap: 22px; margin-left: auto; }
.nav a {
  color: #dce8f8; text-decoration: none; font-size: 15px; font-weight: 500;
  padding: 6px 2px; border-bottom: 2px solid transparent; transition: all 0.2s;
}
.nav a:hover { color: #fff; border-bottom-color: var(--cyan-2); }
.nav-actions { display: flex; align-items: center; gap: 12px; }
.hotline { color: #fff; font-weight: 600; text-decoration: none; font-size: 15px; letter-spacing: 0.5px; }
.btn-link-gy {
  color: var(--cyan-2); text-decoration: none; font-size: 14px; font-weight: 600;
  padding: 6px 10px; border-radius: 999px; transition: color 0.2s;
}
.btn-link-gy:hover { color: #ffffff; }
.btn-link-gy.btn-orange { color: #fb923c; }
.btn-link-gy.btn-orange:hover { color: #f97316; }
.nav-burger { display: none; background: none; border: 0; cursor: pointer; flex-direction: column; gap: 5px; padding: 6px; }
.nav-burger span { width: 22px; height: 2px; background: #fff; border-radius: 2px; }

/* ===== Hero ===== */
.hero {
  color: #fff; padding: 84px 0 60px; position: relative; overflow: hidden;
  background: linear-gradient(135deg, #0b2a52 0%, #12406f 55%, #14517f 100%);
}
.hero::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(700px 340px at 85% 20%, rgba(34, 211, 238, 0.25), transparent 60%),
    linear-gradient(var(--deep-2) 1px, transparent 1px),
    linear-gradient(90deg, var(--deep-2) 1px, transparent 1px);
  background-size: auto, 40px 40px, 40px 40px;
  opacity: 0.5;
}
.hero-inner { position: relative; z-index: 1; }
.hero-eyebrow {
  display: inline-block; color: var(--cyan-2); font-weight: 600; font-size: 14px;
  letter-spacing: 2px; margin-bottom: 16px; text-transform: uppercase;
}
.hero-title {
  font-family: var(--font-disp); font-size: clamp(38px, 6vw, 62px); font-weight: 700;
  line-height: 1.12; letter-spacing: 0.5px; margin-bottom: 22px;
}
.hero-title .grad {
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub { max-width: 640px; color: #cfe0f5; font-size: 17px; margin-bottom: 30px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 46px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-family: var(--font-body); font-size: 15px; font-weight: 600; cursor: pointer;
  padding: 12px 26px; border-radius: 10px; border: 0; text-decoration: none; transition: all 0.2s;
}
.btn-primary { background: var(--grad); color: #fff; box-shadow: 0 8px 22px rgba(37, 99, 235, 0.35); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 26px rgba(37, 99, 235, 0.42); }
.btn-ghost { background: transparent; color: #fff; border: 1.5px solid rgba(255,255,255,0.5); }
.btn-ghost:hover { background: rgba(255,255,255,0.1); }
.btn-block { width: 100%; }
.hero-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; max-width: 760px; }
.stat {
  background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.14);
  border-radius: 12px; padding: 16px 18px; text-align: center; backdrop-filter: blur(4px);
}
.stat b { display: block; font-family: var(--font-disp); font-size: 26px; color: #fff; }
.stat span { color: #b9d2ef; font-size: 13px; }

/* ===== 通用 section ===== */
.section { padding: 72px 0; }
.section-tint { background: rgba(255,255,255,0.6); }
.section-title {
  font-family: var(--font-disp); font-size: clamp(26px, 3.6vw, 34px); font-weight: 700;
  text-align: center; color: var(--deep); letter-spacing: 0.5px; margin-bottom: 12px;
}
.section-title.left { text-align: left; }
.section-sub { text-align: center; color: var(--muted); font-size: 16px; margin-bottom: 40px; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 26px; transition: transform 0.25s, box-shadow 0.25s;
}
.card:hover { transform: translateY(-4px); box-shadow: 0 16px 36px rgba(11, 42, 82, 0.13); }

/* ===== 产品中心 ===== */
.prod-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.prod-card-wide { grid-column: 1 / -1; }
.prod-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
.prod-icon {
  width: 46px; height: 46px; border-radius: 12px; display: inline-flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, rgba(37,99,235,0.12), rgba(34,211,238,0.12));
  color: var(--cyan); 
}
.prod-icon svg { width: 24px; height: 24px; }
.prod-tag {
  font-family: var(--font-disp); font-weight: 700; font-size: 13px; letter-spacing: 1px;
  color: var(--cyan); background: rgba(14,165,233,0.1); padding: 4px 10px; border-radius: 6px;
}
.prod-card h3 { font-size: 20px; color: var(--deep); display: flex; align-items: baseline; gap: 10px; margin-bottom: 8px; }
.prod-en { font-size: 13px; color: var(--cyan); font-weight: 600; }
.prod-desc { color: var(--muted); font-size: 14.5px; margin-bottom: 14px; }
.prod-feats { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; }
.prod-feats li {
  font-size: 12.5px; color: var(--deep); background: var(--tint);
  border: 1px solid var(--line); padding: 4px 10px; border-radius: 999px;
}
.prod-note { margin-top: 22px; text-align: center; color: var(--muted); font-size: 13.5px; }

/* ===== 整套交付 ===== */
.feat3-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.mini-card h3 { font-size: 18px; color: var(--deep); margin-bottom: 8px; }
.mini-card p { color: var(--muted); font-size: 14.5px; }

/* ===== 核心能力 ===== */
.cap-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.cap-card h3 { font-size: 17px; color: var(--deep); margin-bottom: 8px; position: relative; padding-left: 16px; }
.cap-card h3::before {
  content: ""; position: absolute; left: 0; top: 6px; width: 8px; height: 8px;
  border-radius: 2px; background: var(--grad);
}
.cap-card p { color: var(--muted); font-size: 14px; }

/* ===== 定制流程 ===== */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; list-style: none; }
.step { position: relative; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 22px 22px; }
.step b { font-family: var(--font-disp); font-size: 34px; color: rgba(14,165,233,0.22); display: block; margin-bottom: 8px; }
.step h3 { font-size: 17px; color: var(--deep); margin-bottom: 6px; }
.step p { color: var(--muted); font-size: 14px; }

/* ===== 应用场景 ===== */
.scene-grid { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }
.scene-chip {
  font-size: 15px; color: var(--deep); background: var(--card);
  border: 1px solid var(--line); border-radius: 999px; padding: 12px 26px;
  box-shadow: var(--shadow); transition: all 0.2s; cursor: default;
}
.scene-chip:hover { background: var(--grad); color: #fff; transform: translateY(-2px); }

/* ===== FAQ ===== */
.faq-list { max-width: 820px; margin: 0 auto; display: grid; gap: 12px; }
.faq-item {
  background: var(--card); border: 1px solid var(--line); border-radius: 12px;
  box-shadow: var(--shadow); padding: 0 22px; overflow: hidden;
}
.faq-item summary {
  cursor: pointer; list-style: none; padding: 17px 0; font-weight: 600; color: var(--deep);
  font-size: 15.5px; display: flex; justify-content: space-between; align-items: center;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+"; font-size: 20px; color: var(--cyan); transition: transform 0.2s; line-height: 1;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p { color: var(--muted); font-size: 14.5px; padding: 0 0 18px; }

/* ===== 询盘 ===== */
.contact-wrap {
  display: grid; grid-template-columns: 1fr 1.2fr; gap: 36px; align-items: start;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 40px;
}
.contact-info p { color: var(--muted); margin-bottom: 22px; }
.contact-rows { display: grid; gap: 14px; }
.contact-rows > div { display: flex; gap: 12px; align-items: baseline; }
.contact-rows b { color: var(--deep); min-width: 84px; }
.contact-rows a { color: var(--cyan); font-weight: 600; text-decoration: none; }
.lead-form { display: grid; gap: 14px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.lead-form label { display: grid; gap: 6px; font-size: 13.5px; color: var(--deep); font-weight: 500; }
.lead-form label.full { grid-column: 1 / -1; }
.lead-form em { color: #e11d48; font-style: normal; }
.lead-form input, .lead-form textarea {
  font-family: var(--font-body); font-size: 14.5px; color: var(--ink);
  border: 1.5px solid var(--line); border-radius: 10px; padding: 11px 14px;
  outline: none; transition: border-color 0.2s; background: #fff;
}
.lead-form input:focus, .lead-form textarea:focus { border-color: var(--cyan); }
.form-msg { font-size: 14px; min-height: 20px; }
.form-msg.ok { color: #059669; }
.form-msg.err { color: #dc2626; }

/* ===== Footer ===== */
.site-footer { background: var(--deep); color: #b9c9e2; padding: 34px 0; margin-top: 20px; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.footer-brand { display: flex; gap: 18px; }
.footer-brand a { color: #dce8f8; text-decoration: none; font-size: 14.5px; }
.footer-brand a:hover { color: #fff; }
.footer-copy { font-size: 13px; }

/* ===== 响应式 ===== */
@media (max-width: 960px) {
  .prod-grid, .feat3-grid, .cap-grid, .steps { grid-template-columns: 1fr 1fr; }
  .contact-wrap { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .nav { display: none; }
  .nav-burger { display: inline-flex; }
  .nav.open { display: flex; flex-direction: column; position: absolute; top: 68px; left: 0; right: 0; background: var(--deep); padding: 16px 22px; gap: 14px; }
  .prod-grid, .feat3-grid, .cap-grid, .steps, .form-grid, .hero-stats { grid-template-columns: 1fr; }
  .hotline { display: none; }
  .section { padding: 52px 0; }
  .contact-wrap { padding: 26px; }
}