/* ============================================
   绍兴市姚工电子科技有限公司 · 官网
   主样式 v2 · 现代极简商务
   ============================================ */

:root {
  /* ============ 背景层级 ============ */
  --bg-base: #07080C;
  --bg-elevated: #0F1117;
  --bg-card: #14171F;
  --bg-card-hover: #1A1E28;

  /* ============ 边框 ============ */
  --border: rgba(255, 255, 255, 0.06);
  --border-strong: rgba(255, 255, 255, 0.10);
  --border-accent: rgba(0, 212, 255, 0.30);

  /* ============ 文字 ============ */
  --text-1: #FFFFFF;
  --text-2: #C9D0E0;
  --text-3: #7A8194;
  --text-4: #4A5163;

  /* ============ 品牌色 ============ */
  --brand: #E60012;        /* YG 红 */
  --accent: #00B4FF;       /* 单一蓝色 */
  --accent-soft: #0070CC;
  --success: #00C896;
  --warn: #FF9F1C;

  /* ============ 状态底色(微妙) ============ */
  --tag-bg: rgba(255, 255, 255, 0.06);
  --tag-bg-brand: rgba(230, 0, 18, 0.10);
  --tag-bg-accent: rgba(0, 180, 255, 0.10);
  --tag-bg-warn: rgba(255, 159, 28, 0.10);
  --tag-bg-purple: rgba(140, 100, 220, 0.10);

  /* ============ 阴影 ============ */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.20);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.30);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.40);

  /* ============ 渐变(克制使用) ============ */
  --grad-accent: linear-gradient(135deg, #00B4FF 0%, #0070CC 100%);
  --grad-brand: linear-gradient(135deg, #FF1744 0%, #E60012 100%);

  /* ============ 间距系统 ============ */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;
  --space-10: 128px;

  /* ============ 字体 ============ */
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", Consolas, monospace;
}

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

html, body {
  overflow-x: clip;  /* clip 不会让 overflow-y 变 auto,sticky 才生效 */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-2);
  background: var(--bg-base);
  /* 顶光:单点渐变,不杂乱 */
  background-image: radial-gradient(ellipse 80% 50% at 50% -10%, rgba(0, 180, 255, 0.12) 0%, transparent 60%);
  background-attachment: fixed;
  min-height: 100vh;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
img, svg { display: block; max-width: 100%; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ============ Typography ============ */
h1, h2, h3, h4, h5 {
  color: var(--text-1);
  font-weight: 700;
  letter-spacing: -0.01em;
}

/* ============ Button ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 26px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  transition: all 0.2s ease;
  border: 1px solid transparent;
  white-space: nowrap;
  cursor: pointer;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover {
  background: #0095E6;
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(0, 180, 255, 0.30);
}
.btn-secondary {
  background: transparent;
  border-color: var(--border-strong);
  color: var(--text-1);
}
.btn-secondary:hover {
  border-color: var(--text-3);
  background: rgba(255, 255, 255, 0.04);
}
.btn-block { width: 100%; }

/* ============ Tag(克制版) ============ */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 500;
  background: var(--tag-bg);
  color: var(--text-2);
  border: 1px solid var(--border);
  letter-spacing: 0.01em;
}
.tag-cyan { background: var(--tag-bg-accent); color: var(--accent); border-color: rgba(0, 180, 255, 0.20); }
.tag-purple { background: var(--tag-bg-purple); color: #B49AE0; border-color: rgba(140, 100, 220, 0.25); }
.tag-green { background: rgba(0, 200, 150, 0.10); color: #2BD4A8; border-color: rgba(0, 200, 150, 0.20); }
.tag-orange { background: var(--tag-bg-warn); color: var(--warn); border-color: rgba(255, 159, 28, 0.20); }
.tag-pink { background: var(--tag-bg-brand); color: #FF5570; border-color: rgba(230, 0, 18, 0.20); }
.tag-gray { background: var(--tag-bg); color: var(--text-3); }

/* ============ NAV ============ */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(7, 8, 12, 0.62);
  backdrop-filter: blur(28px) saturate(180%);
  -webkit-backdrop-filter: blur(28px) saturate(180%);
  border-bottom: 1px solid var(--border);
  /* 强悬浮感:多层投影 + 顶部高光 + 下方渐变阴影 */
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.55),
    0 20px 60px rgba(0, 0, 0, 0.30),
    0 1px 0 rgba(255, 255, 255, 0.07) inset;
  transition: background 0.25s ease, box-shadow 0.25s ease;
}
/* 下方 24px 渐变阴影,营造"漂浮"深度 */
.nav::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  height: 24px;
  background: linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0.45) 0%,
    rgba(0, 0, 0, 0.20) 40%,
    transparent 100%
  );
  pointer-events: none;
  z-index: -1;
}
/* 滚动后:背景更不透明 + 投影更紧实 */
.nav.scrolled {
  background: rgba(7, 8, 12, 0.88);
  box-shadow:
    0 6px 24px rgba(0, 0, 0, 0.55),
    0 16px 48px rgba(0, 0, 0, 0.32),
    0 1px 0 rgba(255, 255, 255, 0.08) inset;
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-1);
  font-weight: 700;
  font-size: 17px;
}
.logo-img {
  height: 36px;
  width: auto;
  filter: drop-shadow(0 0 12px rgba(230, 0, 18, 0.45));
  transition: filter 0.2s, transform 0.2s;
}
.logo:hover .logo-img {
  filter: drop-shadow(0 0 16px rgba(230, 0, 18, 0.65));
  transform: scale(1.04);
}
.logo-text {
  font-weight: 600;
  letter-spacing: -0.01em;
}
.menu {
  display: flex;
  gap: 32px;
  font-size: 14px;
  color: var(--text-3);
}
.menu a {
  transition: color 0.2s;
  font-weight: 500;
}
.menu a:hover {
  color: var(--text-1);
}
.nav-cta {
  padding: 9px 18px;
  font-size: 14px;
}

/* ============ HERO ============ */
.hero {
  padding: var(--space-10) 0 var(--space-9);
  text-align: center;
  position: relative;
  overflow: hidden;       /* 2026-09-04 加:防止 video 超出 hero */
}
/* 2026-09-04 姚工:hero 视频背景("每一道工序"工厂主题,70.5s)
   v32 再调暗:opacity 0.55 → 0.45, brightness 0.45 → 0.35, mask 加深 */
.hero-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
  opacity: 0.45;
  filter: brightness(0.35) contrast(1.05) saturate(0.9);
  pointer-events: none;
}
.hero-video-mask {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(15, 17, 22, 0.65) 0%, rgba(15, 17, 22, 0.30) 30%, rgba(15, 17, 22, 0.80) 100%);
}
/* hero 内容必须在 video 之上 */
.hero > .container {
  position: relative;
  z-index: 2;
}
.hero .fx-aurora,
.hero .fx-aurora-glow,
.hero .fx-aurora-ring {
  z-index: 1;
  opacity: 0.25;          /* video 之上又叠一层极光效果 */
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 16px;
  background: var(--tag-bg);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 13px;
  color: var(--text-3);
  margin-bottom: var(--space-7);
}
.hero-title {
  font-size: 68px;
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-5);
}
.hero-title .accent-brand {
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 0 24px rgba(230, 0, 18, 0.35));
}
.hero-lead {
  font-size: 18px;
  color: var(--text-2);
  margin-bottom: var(--space-7);
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}
.hero-cta {
  display: inline-flex;
  gap: 14px;
  margin-bottom: var(--space-9);
}
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  max-width: 800px;
  margin: 0 auto;
}
.stat {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px 20px;
  transition: all 0.2s ease;
}
.stat:hover {
  border-color: var(--border-strong);
  background: var(--bg-card-hover);
}
.stat-num {
  font-size: 38px;
  font-weight: 800;
  color: var(--text-1);
  margin-bottom: 6px;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}
.stat-num .unit {
  font-size: 20px;
  color: var(--accent);
  margin-left: 2px;
}
.stat-label {
  font-size: 13px;
  color: var(--text-3);
}

/* ============ Section 通用 ============ */
.section {
  padding: var(--space-9) 0;
}
.section-alt {
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.section-head {
  text-align: center;
  margin-bottom: var(--space-8);
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}
.section-title {
  font-size: 44px;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-3);
}
.section-subtitle {
  font-size: 17px;
  color: var(--text-3);
}
.section-foot {
  text-align: center;
  margin-top: var(--space-6);
}
.warn-inline {
  display: inline-block;
  padding: 10px 18px;
  background: var(--tag-bg-warn);
  border: 1px solid rgba(255, 159, 28, 0.20);
  border-radius: 8px;
  font-size: 13px;
  color: var(--warn);
}
.warn-inline code {
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 1px 6px;
  background: rgba(0, 0, 0, 0.30);
  border-radius: 3px;
}

/* ============ PRODUCTS ============ */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 20px;
}
.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px;
  transition: all 0.25s ease;
  position: relative;
  /* v30 5 个区块 5 种进场动画 · 产品矩阵:3D 翻转 + 渐入 */
  opacity: 0;
  transform: perspective(800px) rotateY(-90deg) translateZ(0);
  transform-origin: left center;
  will-change: transform, opacity;
}
.product-card.product-revealed {
  opacity: 1;
  transform: perspective(800px) rotateY(0) translateZ(0);
  transition: transform 0.8s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.6s ease-out;
}
.product-card:hover {
  border-color: var(--border-accent);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.product-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: var(--space-5);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
}
.icon-1 { background: linear-gradient(135deg, rgba(0, 180, 255, 0.18), rgba(0, 112, 204, 0.18)); }
.icon-2 { background: linear-gradient(135deg, rgba(0, 200, 150, 0.18), rgba(0, 180, 255, 0.18)); }
.icon-3 { background: linear-gradient(135deg, rgba(255, 159, 28, 0.18), rgba(230, 0, 18, 0.18)); }
.product-card h3 {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}
.product-url {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-3);
  margin-bottom: 14px;
}
.product-desc {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.7;
  margin-bottom: var(--space-5);
}
.product-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

/* CTA 卡(期待您的项目加入) */
.product-card-cta {
  border: 1.5px dashed rgba(0, 180, 255, 0.30);
  background: linear-gradient(135deg, rgba(0, 180, 255, 0.04), rgba(0, 112, 204, 0.04));
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
}
.product-card-cta:hover {
  border-color: var(--accent);
  background: linear-gradient(135deg, rgba(0, 180, 255, 0.08), rgba(0, 112, 204, 0.08));
  transform: translateY(-2px);
}
.product-card-cta h3 {
  color: var(--text-1);
  font-size: 20px;
}
.product-cta-text {
  font-size: 13px;
  color: var(--text-2);
  line-height: 1.7;
  margin-bottom: var(--space-5);
}
.product-cta-btn {
  margin-top: auto;
}

/* ============ INDUSTRIES ============ */
.industries-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 16px;
}
.industry {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px 16px;
  text-align: center;
  transition: all 0.2s ease;
  /* v30 行业覆盖:百叶窗 clip-path 渐开 + 渐入 */
  opacity: 0;
  clip-path: inset(0 100% 0 0);
  will-change: clip-path, opacity;
}
.industry.industry-revealed {
  opacity: 1;
  clip-path: inset(0 0 0 0);
  transition: clip-path 0.7s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.4s ease-out;
}
.industry:hover {
  border-color: var(--border-accent);
  background: var(--bg-card-hover);
}
.industry-emoji {
  font-size: 32px;
  margin-bottom: 10px;
}
.industry-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-1);
  margin-bottom: 4px;
}
.industry-stat {
  font-size: 12px;
  color: var(--text-3);
}

/* ============ TECH ============ */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}
.tech-col {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px;
  /* v29 4 张卡片 4 种不同进场动画:默认全部隐藏 + 各自 transform,IO 触发 reveal */
  opacity: 0;
  will-change: transform, opacity, filter;
}
.tech-col.tech-revealed {
  opacity: 1;
}
/* 0:从下滑入 + 淡入 */
.tech-col.tech-i-0.tech-revealed { animation: tech-in-0 0.7s cubic-bezier(0.16, 1, 0.3, 1) both; }
/* 1:从左滑入 + 旋转 */
.tech-col.tech-i-1.tech-revealed { animation: tech-in-1 0.7s cubic-bezier(0.16, 1, 0.3, 1) both; }
/* 2:缩放弹入(从 0.6 弹到 1) */
.tech-col.tech-i-2.tech-revealed { animation: tech-in-2 0.8s cubic-bezier(0.34, 1.56, 0.64, 1) both; }
/* 3:从右滑入 + 模糊 */
.tech-col.tech-i-3.tech-revealed { animation: tech-in-3 0.7s cubic-bezier(0.16, 1, 0.3, 1) both; }

@keyframes tech-in-0 {
  0%   { opacity: 0; transform: translateY(60px); }
  100% { opacity: 1; transform: translateY(0); }
}
@keyframes tech-in-1 {
  0%   { opacity: 0; transform: translateX(-80px) rotate(-6deg); }
  100% { opacity: 1; transform: translateX(0) rotate(0); }
}
@keyframes tech-in-2 {
  0%   { opacity: 0; transform: scale(0.6); }
  60%  { opacity: 1; transform: scale(1.06); }
  100% { opacity: 1; transform: scale(1); }
}
@keyframes tech-in-3 {
  0%   { opacity: 0; transform: translateX(80px); filter: blur(12px); }
  100% { opacity: 1; transform: translateX(0); filter: blur(0); }
}
/* reduced / off 模式:跳过动画直接显示 */
body.fx-mode-reduced .tech-col,
body.fx-mode-off .tech-col {
  opacity: 1 !important;
  animation: none !important;
}
.tech-col h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-3);
  margin-bottom: var(--space-5);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.tech-tag {
  padding: 6px 12px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 13px;
  color: var(--text-2);
  transition: all 0.2s;
  font-family: var(--font-mono);
}
.tech-tag:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ============ PROCESS ============ */
.process {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}
.process-step {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px 20px;
  transition: all 0.2s;
  position: relative;
  /* v30 合作流程:弹跳上滑(scale + translateY) */
  opacity: 0;
  transform: translateY(80px) scale(0.5);
  will-change: transform, opacity;
}
.process-step.process-revealed {
  opacity: 1;
  transform: translateY(0) scale(1);
  transition: transform 0.8s cubic-bezier(0.68, -0.55, 0.27, 1.55), opacity 0.4s ease-out;
}
.process-step:hover {
  border-color: var(--border-accent);
  background: var(--bg-card-hover);
}
.step-num {
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  font-family: var(--font-mono);
  margin-bottom: 10px;
  letter-spacing: 0.05em;
}
.step-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-1);
  margin-bottom: 6px;
}
.step-desc {
  font-size: 13px;
  color: var(--text-3);
  line-height: 1.6;
}
.process-arrow { display: none; }

/* ============ STORIES ============ */
.stories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}
.story-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px;
  transition: all 0.25s;
  /* v30 客户故事:纸牌翻入(rotateX + translateY) */
  opacity: 0;
  transform: perspective(1000px) rotateX(80deg) translateY(100px);
  transform-origin: center bottom;
  will-change: transform, opacity;
}
.story-card.story-revealed {
  opacity: 1;
  transform: perspective(1000px) rotateX(0) translateY(0);
  transition: transform 0.9s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.5s ease-out;
}
.story-card:hover {
  border-color: var(--border-accent);
  background: var(--bg-card-hover);
}
.story-tag {
  display: inline-block;
  padding: 4px 10px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 12px;
  color: var(--accent);
  margin-bottom: var(--space-4);
}
.story-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 14px;
  line-height: 1.4;
}
.story-card p {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.7;
  margin-bottom: var(--space-5);
}
.story-meta {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-3);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border);
  font-family: var(--font-mono);
}

/* ============ CONTACT / CTA ============ */
.section-cta {
  background:
    radial-gradient(ellipse 60% 50% at 50% 50%, rgba(0, 180, 255, 0.06) 0%, transparent 60%),
    var(--bg-base);
}
.cta-wrap {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 64px;
  align-items: start;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 56px;
}
.cta-info h2 {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: var(--space-3);
  letter-spacing: -0.02em;
}
.cta-lead {
  font-size: 15px;
  color: var(--text-3);
  margin-bottom: var(--space-6);
}
.cta-row {
  display: flex;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}
.cta-row:last-child {
  border-bottom: none;
}
.cta-label {
  width: 90px;
  color: var(--text-3);
  flex-shrink: 0;
  font-size: 13px;
}
.cta-value {
  color: var(--text-1);
  flex: 1;
  font-weight: 500;
}
.cta-form h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: var(--space-5);
}
.cta-form label {
  display: block;
  margin-bottom: var(--space-4);
}
.cta-form label span {
  display: block;
  font-size: 13px;
  color: var(--text-3);
  margin-bottom: 6px;
  font-weight: 500;
}
.cta-form input,
.cta-form select,
.cta-form textarea {
  width: 100%;
  padding: 12px 14px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  color: var(--text-1);
  font-size: 14px;
  font-family: inherit;
  resize: vertical;
  transition: border-color 0.2s, background 0.2s;
}
.cta-form input:focus,
.cta-form select:focus,
.cta-form textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--bg-base);
}
.cta-form input::placeholder,
.cta-form textarea::placeholder {
  color: var(--text-4);
}
.cta-form select {
  appearance: none;
  background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%237A8194' stroke-width='2'%3e%3cpolyline points='6 9 12 15 18 9'/%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 16px;
  padding-right: 38px;
}
.cta-form button {
  margin-top: var(--space-2);
}
.form-status {
  margin-top: var(--space-3);
  font-size: 13px;
  min-height: 18px;
}
.form-status.ok { color: var(--success); }
.form-status.err { color: var(--warn); }

/* ============ FOOTER ============ */
.footer {
  padding: 64px 0 28px;
  background: var(--bg-base);
  border-top: 1px solid var(--border);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  font-weight: 700;
  color: var(--text-1);
  margin-bottom: 14px;
}
.footer-logo-img {
  height: 28px;
  width: auto;
  filter: drop-shadow(0 0 8px rgba(230, 0, 18, 0.40));
}
.footer-desc {
  font-size: 13px;
  color: var(--text-3);
  line-height: 1.7;
}
.footer h5 {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-3);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.footer ul li {
  font-size: 13px;
  color: var(--text-2);
  padding: 5px 0;
}
.footer ul li a {
  transition: color 0.2s;
}
.footer ul li a:hover {
  color: var(--accent);
}
.footer-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-3);
}
.footer-bottom a {
  color: var(--text-3);
  text-decoration: none;
  transition: color 0.2s;
}
.footer-bottom a:hover {
  color: var(--text-2);
}

/* ============ RESPONSIVE ============ */
@media (max-width: 768px) {
  .menu { display: none; }
  .nav-cta { padding: 8px 14px; font-size: 13px; }
  .hero { padding: 80px 0 64px; }
  .hero-title { font-size: 40px; }
  .hero-lead { font-size: 16px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .section { padding: 64px 0; }
  .section-title { font-size: 28px; }
  .process { grid-template-columns: 1fr 1fr; }
  .cta-wrap { grid-template-columns: 1fr; padding: 32px; gap: 32px; }
  .cta-info h2 { font-size: 26px; }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; margin-bottom: 36px; }
  .footer-bottom { flex-direction: column; gap: 12px; }

  /* footer logo: 图标独立成行,文字单行,整体居中 */
  .footer-logo {
    flex-direction: column;
    text-align: center;
    align-items: center;
    gap: 14px;
    padding-bottom: 8px;
  }
  .footer-logo-img {
    height: 56px;
  }
  .footer-logo > span {
    font-size: 18px;
    white-space: nowrap;
    letter-spacing: -0.01em;
  }
  .footer-desc {
    text-align: center;
    max-width: 280px;
    margin: 0 auto;
    line-height: 1.8;
  }
  .footer > div > div:first-child {
    text-align: center;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 8px;
  }
  .footer h5 {
    text-align: center;
    margin-bottom: 18px;
  }
  .footer ul {
    text-align: center;
  }
}