/* ============================================================
   淄博曜宸网络科技 · 品牌官网样式
   主色：深蓝 #0A2540 / 电光蓝 #1652F0，点缀霓虹紫 #7C4DFF / 青色
   断点：≥1200 桌面 / 768-1199 平板 / <768 手机
   ============================================================ */

:root {
  --bg: #060d1a;
  --bg-2: #0a1426;
  --bg-3: #0d1a30;
  --surface: rgba(255, 255, 255, 0.04);
  --surface-2: rgba(255, 255, 255, 0.07);
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);
  --text: #eaf1fb;
  --text-2: #a7b6cf;
  --text-3: #6b7d99;
  --blue: #1652F0;
  --blue-bright: #3b82f6;
  --purple: #7C4DFF;
  --cyan: #22d3ee;
  --gradient: linear-gradient(135deg, #1652F0 0%, #7C4DFF 100%);
  --gradient-accent: linear-gradient(135deg, #22d3ee 0%, #1652F0 100%);
  --radius: 16px;
  --radius-sm: 12px;
  --shadow: 0 20px 60px -20px rgba(22, 82, 240, 0.45);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --header-h: 72px;
}

* { 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;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img, svg { display: block; }

/* 粒子画布背景 */
#particle-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.55;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* 通用渐变文字 */
.gradient-text {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

/* ============ 顶部导航 ============ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  transition: background 0.3s ease, backdrop-filter 0.3s ease, box-shadow 0.3s ease;
}

.site-header.scrolled {
  background: rgba(6, 13, 26, 0.82);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  box-shadow: 0 1px 0 var(--border), 0 10px 30px -18px rgba(0, 0, 0, 0.7);
}

.header-inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo {
  display: block;
  height: 44px;
  width: auto;
  object-fit: contain;
}

.brand-mark {
  display: grid;
  place-items: center;
}
.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}
.brand-text strong { font-size: 17px; font-weight: 700; letter-spacing: 0.5px; }
.brand-text small { font-size: 11px; color: var(--text-3); letter-spacing: 1px; }

@media (max-width: 400px) {
  .brand-logo { height: 36px; }
}

.main-nav ul { display: flex; align-items: center; gap: 6px; }
.nav-link {
  display: inline-block;
  padding: 8px 14px;
  font-size: 15px;
  color: var(--text-2);
  border-radius: 8px;
  transition: color 0.2s ease, background 0.2s ease;
}
.nav-link:hover { color: var(--text); background: var(--surface); }
.nav-link.nav-cta {
  margin-left: 8px;
  color: #fff;
  background: var(--gradient);
  padding: 9px 18px;
  font-weight: 600;
  box-shadow: 0 8px 24px -10px rgba(22, 82, 240, 0.6);
}
.nav-link.nav-cta:hover { filter: brightness(1.12); transform: translateY(-1px); }

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  cursor: pointer;
}
.menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 0 auto;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.menu-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============ Hero ============ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-h) + 40px) 0 80px;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 20% 20%, rgba(22, 82, 240, 0.28), transparent 60%),
    radial-gradient(ellipse 50% 50% at 80% 30%, rgba(124, 77, 255, 0.22), transparent 60%);
  z-index: 0;
}

.hero-inner { text-align: center; max-width: 900px; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  margin-bottom: 28px;
  font-size: 13.5px;
  color: var(--text-2);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  backdrop-filter: blur(8px);
}
.hero-badge .dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(34, 211, 238, 0.18);
  animation: pulse 2s infinite;
}

.hero-title {
  font-size: clamp(34px, 5.6vw, 62px);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.5px;
  margin-bottom: 26px;
}

.hero-sub {
  font-size: clamp(16px, 2vw, 19px);
  color: var(--text-2);
  max-width: 680px;
  margin: 0 auto 40px;
}
.hero-sub strong { color: var(--text); font-weight: 600; }

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 64px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 26px;
  font-size: 16px;
  font-weight: 600;
  border-radius: 12px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.25s ease, box-shadow 0.25s ease, filter 0.25s ease, background 0.25s ease;
}
.btn-primary {
  color: #fff;
  background: var(--gradient);
  box-shadow: 0 14px 34px -12px rgba(22, 82, 240, 0.7);
}
.btn-primary:hover { transform: translateY(-3px); filter: brightness(1.1); box-shadow: 0 20px 44px -14px rgba(22, 82, 240, 0.85); }
.btn-ghost {
  color: var(--text);
  background: var(--surface);
  border-color: var(--border-strong);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover { transform: translateY(-3px); background: var(--surface-2); border-color: rgba(255,255,255,0.28); }
.btn-block { width: 100%; justify-content: center; }

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
}
.stat { text-align: center; }
.stat-num {
  font-size: clamp(30px, 4vw, 44px);
  font-weight: 800;
  line-height: 1;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.stat-suffix {
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 800;
  color: var(--cyan);
}
.stat-label { display: block; margin-top: 8px; font-size: 14px; color: var(--text-3); }

.scroll-hint {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}
.mouse {
  display: block;
  width: 26px;
  height: 42px;
  border: 2px solid var(--text-3);
  border-radius: 14px;
  position: relative;
}
.mouse .wheel {
  position: absolute;
  top: 8px; left: 50%;
  width: 4px; height: 8px;
  margin-left: -2px;
  background: var(--cyan);
  border-radius: 3px;
  animation: scroll-wheel 1.8s infinite;
}

/* ============ Section 通用 ============ */
.section { padding: 110px 0; position: relative; }

.section-head {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 64px;
}
.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--blue-bright);
  text-transform: uppercase;
  margin-bottom: 16px;
}
.eyebrow-accent { color: var(--purple); }
.section-head h2 {
  font-size: clamp(26px, 3.6vw, 40px);
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 18px;
}
.section-head p { color: var(--text-2); font-size: 17px; }

/* ============ 业务板块 ============ */
.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  position: relative;
  padding: 32px 28px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  backdrop-filter: blur(10px);
  transition: transform 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
  overflow: hidden;
}
.service-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(400px circle at top left, rgba(22, 82, 240, 0.14), transparent 60%);
  opacity: 0;
  transition: opacity 0.4s ease;
}
.service-card:hover {
  transform: translateY(-8px);
  border-color: rgba(59, 130, 246, 0.4);
  box-shadow: var(--shadow);
}
.service-card:hover::before { opacity: 1; }
.service-card.featured {
  grid-column: span 1;
  border-color: rgba(124, 77, 255, 0.4);
  background: linear-gradient(160deg, rgba(124,77,255,0.12), rgba(22,82,240,0.06));
}

.service-icon {
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  border-radius: 14px;
  color: #fff;
  background: var(--gradient);
  margin-bottom: 20px;
  box-shadow: 0 10px 24px -10px rgba(22, 82, 240, 0.6);
}

.service-tag {
  position: absolute;
  top: 24px;
  right: 20px;
  font-size: 12px;
  font-weight: 600;
  color: var(--cyan);
  background: rgba(34, 211, 238, 0.12);
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid rgba(34, 211, 238, 0.25);
}

.service-card h3 { font-size: 21px; font-weight: 700; margin-bottom: 12px; }
.service-card > p { color: var(--text-2); font-size: 15px; margin-bottom: 20px; }

.service-points { margin-bottom: 20px; }
.service-points li {
  position: relative;
  padding-left: 22px;
  font-size: 14.5px;
  color: var(--text-2);
  margin-bottom: 9px;
}
.service-points li::before {
  content: "";
  position: absolute;
  left: 0; top: 9px;
  width: 7px; height: 7px;
  border-radius: 2px;
  background: var(--gradient-accent);
  transform: rotate(45deg);
}

.service-fit {
  font-size: 13px;
  color: var(--text-3);
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

/* ============ GEO 优势 ============ */
.geo-section {
  background: linear-gradient(180deg, transparent, rgba(22, 82, 240, 0.05), transparent);
}
.geo-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.geo-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 360px;
}

.geo-chat-window {
  width: 100%;
  max-width: 380px;
  background: var(--bg-2);
  border: 1px solid var(--border-strong);
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 30px 70px -30px rgba(0, 0, 0, 0.8);
  position: relative;
  z-index: 2;
}
.chat-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}
.chat-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 0 4px rgba(34,211,238,0.15); }
.chat-title { font-size: 14px; font-weight: 600; color: var(--text-2); }
.chat-body { padding: 20px; display: flex; flex-direction: column; gap: 14px; }
.chat-q {
  align-self: flex-end;
  background: var(--blue);
  color: #fff;
  padding: 12px 16px;
  border-radius: 14px 14px 4px 14px;
  font-size: 14px;
  max-width: 82%;
}
.chat-a {
  align-self: flex-start;
  background: var(--surface-2);
  color: var(--text-2);
  padding: 14px 16px;
  border-radius: 14px 14px 14px 4px;
  font-size: 14px;
  line-height: 1.6;
}
.highlight-brand {
  color: var(--cyan);
  font-weight: 700;
  background: rgba(34, 211, 238, 0.12);
  padding: 1px 5px;
  border-radius: 4px;
}

.geo-orbit { position: absolute; inset: 0; z-index: 1; pointer-events: none; }
.orbit-ring {
  position: absolute;
  top: 50%; left: 50%;
  width: 340px; height: 340px;
  margin: -170px 0 0 -170px;
  border: 1px dashed rgba(124, 77, 255, 0.35);
  border-radius: 50%;
  animation: spin 24s linear infinite;
}
.orbit-node {
  position: absolute;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--purple);
  box-shadow: 0 0 16px rgba(124, 77, 255, 0.9);
}
.orbit-node.n1 { top: 50%; left: 50%; margin: -6px 0 0 -176px; animation: spin-reverse 24s linear infinite; transform-origin: 176px 6px; }
.orbit-node.n2 { top: 50%; left: 50%; margin: -176px 0 0 -6px; animation: spin-reverse 24s linear infinite; transform-origin: 6px 176px; }
.orbit-node.n3 { top: 50%; left: 50%; margin: -6px 0 0 164px; animation: spin-reverse 24s linear infinite; transform-origin: -164px 6px; }

.geo-points { display: flex; flex-direction: column; gap: 28px; }
.geo-point {
  display: flex;
  gap: 20px;
  padding: 22px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: transform 0.3s ease, border-color 0.3s ease;
}
.geo-point:hover { transform: translateX(6px); border-color: rgba(124, 77, 255, 0.4); }
.geo-num {
  font-size: 30px;
  font-weight: 800;
  line-height: 1;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  flex-shrink: 0;
}
.geo-point h3 { font-size: 18px; font-weight: 700; margin-bottom: 6px; }
.geo-point p { color: var(--text-2); font-size: 14.5px; }

/* ============ 服务流程 ============ */
.process-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  position: relative;
}
.process-steps::before {
  content: "";
  position: absolute;
  top: 44px;
  left: 8%;
  right: 8%;
  height: 2px;
  background: linear-gradient(90deg, var(--blue), var(--purple));
  opacity: 0.3;
}
.step {
  position: relative;
  text-align: center;
  padding: 0 8px;
}
.step-num {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  margin: 0 auto 20px;
  border-radius: 50%;
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  background: var(--bg-3);
  border: 2px solid var(--border-strong);
  box-shadow: 0 0 0 6px var(--bg);
  transition: border-color 0.3s ease, background 0.3s ease, transform 0.3s ease;
}
.step:hover .step-num {
  background: var(--gradient);
  border-color: transparent;
  transform: translateY(-4px);
}
.step h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.step p { font-size: 14px; color: var(--text-2); }

/* ============ 案例 ============ */
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.case-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
}
.case-card:hover { transform: translateY(-8px); box-shadow: var(--shadow); border-color: rgba(59,130,246,0.35); }
.case-media {
  position: relative;
  height: 220px;
  overflow: hidden;
}
.case-media::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.case-m1::before { background: linear-gradient(180deg, rgba(10,37,64,0) 40%, rgba(10,37,64,0.55) 100%); }
.case-m2::before { background: linear-gradient(180deg, rgba(26,17,71,0) 40%, rgba(26,17,71,0.55) 100%); }
.case-m3::before { background: linear-gradient(180deg, rgba(6,32,51,0) 40%, rgba(6,32,51,0.55) 100%); }
.case-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  transition: transform 0.6s ease;
}
.case-card:hover .case-svg { transform: scale(1.04); }
.case-industry {
  position: absolute;
  bottom: 14px;
  left: 16px;
  z-index: 2;
  font-size: 12px;
  font-weight: 600;
  color: #fff;
  background: rgba(0, 0, 0, 0.45);
  padding: 4px 12px;
  border-radius: 999px;
  backdrop-filter: blur(6px);
  border: 1px solid rgba(255, 255, 255, 0.12);
}
.case-body { padding: 24px; }
.case-body h3 { font-size: 17px; font-weight: 700; margin-bottom: 18px; }
.case-metrics { display: flex; gap: 12px; }
.case-metrics > div {
  flex: 1;
  padding: 14px;
  background: var(--surface-2);
  border-radius: 10px;
  text-align: center;
}
.case-metrics strong {
  display: block;
  font-size: 22px;
  font-weight: 800;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.case-metrics span { font-size: 12.5px; color: var(--text-3); }

/* ============ 关于我们 ============ */
.about-section { background: linear-gradient(180deg, transparent, rgba(124, 77, 255, 0.05), transparent); }
.about-inner {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 56px;
  align-items: center;
}
.about-text h2 { font-size: clamp(26px, 3.4vw, 38px); font-weight: 800; line-height: 1.25; margin-bottom: 20px; }
.about-text p { color: var(--text-2); font-size: 16px; margin-bottom: 16px; }
.about-text strong { color: var(--text); font-weight: 600; }
.about-list { margin-top: 24px; display: flex; flex-direction: column; gap: 12px; }
.about-list li {
  position: relative;
  padding-left: 28px;
  color: var(--text-2);
  font-size: 15px;
}
.about-list li::before {
  content: "✓";
  position: absolute;
  left: 0; top: 0;
  color: var(--cyan);
  font-weight: 700;
}

.about-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.about-glow {
  position: absolute;
  width: 300px; height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(124,77,255,0.25), transparent 65%);
  filter: blur(20px);
}
.about-map {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 320px;
  aspect-ratio: 1;
}

/* ============ 联系 + 表单 ============ */
.contact-wrap {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 48px;
  align-items: start;
}
.contact-info h3 { font-size: 20px; font-weight: 700; margin-bottom: 24px; }
.contact-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 18px 0;
  border-bottom: 1px solid var(--border);
}
.ci-icon {
  display: grid;
  place-items: center;
  width: 44px; height: 44px;
  flex-shrink: 0;
  border-radius: 12px;
  color: var(--cyan);
  background: rgba(34, 211, 238, 0.1);
  border: 1px solid rgba(34, 211, 238, 0.2);
}
.contact-item strong { display: block; font-size: 14px; color: var(--text-3); margin-bottom: 2px; }
.contact-item span { font-size: 16px; font-weight: 500; }

.contact-form {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  backdrop-filter: blur(10px);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-field { margin-bottom: 18px; }
.form-field label { display: block; font-size: 14px; font-weight: 600; color: var(--text-2); margin-bottom: 8px; }
.form-field label em { color: #ff6b6b; font-style: normal; }
.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  padding: 13px 16px;
  font-size: 15px;
  font-family: inherit;
  color: var(--text);
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: 10px;
  outline: none;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}
.form-field input::placeholder,
.form-field textarea::placeholder { color: var(--text-3); }
.form-field select { appearance: none; -webkit-appearance: none; cursor: pointer; }
.form-field select option { background: var(--bg-3); color: var(--text); }
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  border-color: var(--blue-bright);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.18);
}
.form-field textarea { resize: vertical; min-height: 100px; }
.form-field.has-error input,
.form-field.has-error select,
.form-field.has-error textarea { border-color: #ff6b6b; }
.err-msg {
  display: block;
  min-height: 0;
  font-size: 12.5px;
  color: #ff6b6b;
  margin-top: 6px;
}
.form-tip { font-size: 12.5px; color: var(--text-3); margin-top: 14px; text-align: center; }

/* 表单提交反馈 */
.form-success {
  text-align: center;
  padding: 40px 20px;
}
.form-success .fs-icon {
  display: grid;
  place-items: center;
  width: 64px; height: 64px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background: rgba(34, 211, 238, 0.12);
  border: 1px solid rgba(34, 211, 238, 0.3);
  color: var(--cyan);
}
.form-success h3 { font-size: 20px; margin-bottom: 8px; }
.form-success p { color: var(--text-2); font-size: 15px; }
.form-success .fs-alt { margin-top: 14px; font-size: 14px; line-height: 1.9; }
.form-success a {
  color: var(--blue-bright);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.form-success .fs-sep { margin: 0 8px; color: var(--text-3); }
.form-success .fs-icon-mail {
  background: rgba(22, 82, 240, 0.14);
  border-color: rgba(22, 82, 240, 0.34);
  color: var(--blue-bright);
}

/* ---- 提交失败提示 ---- */
.form-success.form-failed .fs-icon-warn {
  background: rgba(255, 176, 32, 0.12);
  border-color: rgba(255, 176, 32, 0.34);
  color: #ffb020;
}
.form-success.form-failed h3 { color: var(--text-1); }
.form-success .fs-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-top: 22px;
}
.form-success .fs-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  color: #fff;
  background: linear-gradient(135deg, var(--blue), var(--purple));
  border: 1px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
}
.form-success .fs-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(22, 82, 240, 0.35);
}
.form-success .fs-btn-ghost {
  background: transparent;
  color: var(--text-1);
  border-color: rgba(255, 255, 255, 0.22);
}
.form-success .fs-btn-ghost:hover {
  box-shadow: none;
  border-color: var(--blue-bright);
  color: var(--blue-bright);
}
.form-success .fs-btn svg { flex-shrink: 0; }
@media (max-width: 480px) {
  .form-success .fs-actions { flex-direction: column; }
  .form-success .fs-btn { justify-content: center; }
}

/* ============ Footer ============ */
.site-footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--border);
  background: var(--bg-2);
  padding: 56px 0 32px;
}
.footer-inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
}
.footer-brand { display: flex; align-items: center; gap: 14px; }
.footer-logo { display: block; height: 52px; width: auto; object-fit: contain; }
.footer-brand strong { display: block; font-size: 16px; margin-bottom: 4px; }
.footer-brand small { color: var(--text-3); font-size: 13px; }
.footer-nav { display: flex; flex-direction: column; gap: 10px; }
.footer-nav a { color: var(--text-2); font-size: 14.5px; transition: color 0.2s ease; }
.footer-nav a:hover { color: var(--cyan); }
.footer-copy { text-align: right; }
.footer-copy p { color: var(--text-3); font-size: 13.5px; }
.footer-copy p:last-child { margin-top: 8px; color: var(--text-2); }

/* 备案信息条 */
.footer-legal {
  margin-top: 36px;
  padding-top: 22px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 6px 14px;
  font-size: 12.5px;
  line-height: 1.7;
}
.footer-legal a {
  color: var(--text-3);
  transition: color 0.2s ease;
  word-break: break-all;
}
.footer-legal a:hover { color: var(--cyan); }
.footer-legal-sep { color: var(--text-3); opacity: 0.45; }

/* ============ 滚动渐入动画 ============ */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal[data-delay="1"] { transition-delay: 0.1s; }
.reveal[data-delay="2"] { transition-delay: 0.2s; }
.reveal[data-delay="3"] { transition-delay: 0.3s; }

/* ============ 关键帧动画 ============ */
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(34, 211, 238, 0.4); }
  50% { box-shadow: 0 0 0 6px rgba(34, 211, 238, 0); }
}
@keyframes scroll-wheel {
  0% { opacity: 1; transform: translateY(0); }
  70% { opacity: 0; transform: translateY(14px); }
  100% { opacity: 0; transform: translateY(0); }
}
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes spin-reverse { to { transform: rotate(-360deg); } }

/* ============ 响应式 ============ */
@media (max-width: 1199px) {
  .service-grid { grid-template-columns: repeat(2, 1fr); }
  .case-grid { grid-template-columns: repeat(2, 1fr); }
  .process-steps { grid-template-columns: repeat(3, 1fr); gap: 36px 20px; }
  .process-steps::before { display: none; }
  .geo-content { grid-template-columns: 1fr; gap: 44px; }
  .geo-visual { order: -1; }
  .about-inner { grid-template-columns: 1fr; gap: 40px; }
  .about-visual { order: -1; }
  .contact-wrap { grid-template-columns: 1fr; gap: 36px; }
}

@media (max-width: 767px) {
  :root { --header-h: 64px; }
  .section { padding: 72px 0; }
  .container { padding: 0 18px; }

  .main-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: rgba(6, 13, 26, 0.97);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 16px 20px 24px;
    transform: translateY(-120%);
    transition: transform 0.35s ease;
    z-index: 99;
  }
  .main-nav.open { transform: translateY(0); }
  .main-nav ul { flex-direction: column; align-items: stretch; gap: 4px; }
  .nav-link { display: block; padding: 14px 16px; font-size: 16px; }
  .nav-link.nav-cta { margin-left: 0; text-align: center; }
  .menu-toggle { display: flex; }

  .hero { padding-top: calc(var(--header-h) + 30px); }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 24px 16px; }

  .service-grid { grid-template-columns: 1fr; }
  .case-grid { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: 1fr; gap: 28px; }
  .step { display: flex; gap: 18px; text-align: left; align-items: flex-start; }
  .step-num { margin: 0; width: 48px; height: 48px; font-size: 16px; flex-shrink: 0; }
  .step h3 { margin-bottom: 4px; }

  .form-row { grid-template-columns: 1fr; gap: 0; }
  .contact-form { padding: 24px; }

  .footer-inner { grid-template-columns: 1fr; gap: 28px; }
  .footer-copy { text-align: left; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  * { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; }
}