/* 秋阳 Chris · 企业服务落地页（与主页设计语言对齐） */
:root {
  --paper: #fafafa;
  --card: #ffffff;
  --ink: #0f172a;
  --ink-2: #475569;
  --ink-3: #94a3b8;
  --line: #e2e8f0;
  --line-2: #f1f5f9;
  --primary: #2563eb;
  --accent: #7c3aed;
  --brand-gradient: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);
  --brand-soft: #eef2ff;
  --wechat: #07c160;
  --wechat-dark: #06a854;
  --radius: 20px;
  --radius-sm: 12px;
  --radius-xs: 8px;
  --shadow: 0 4px 24px rgba(15, 23, 42, 0.06);
  --shadow-hover: 0 16px 40px rgba(124, 58, 237, 0.14);
  --shadow-card-hover: 0 12px 32px rgba(15, 23, 42, 0.1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
.wrap { max-width: 960px; margin: 0 auto; padding: 0 20px; }

/* 顶栏 */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(250, 250, 250, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.topbar-inner {
  max-width: 960px; margin: 0 auto; padding: 14px 20px;
  display: flex; align-items: center; justify-content: space-between;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 15px; }
.brand-mark {
  width: 28px; height: 28px; border-radius: 8px;
  background: var(--brand-gradient);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 700; font-size: 14px;
  box-shadow: 0 2px 8px rgba(124, 58, 237, 0.25);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-text small { color: var(--ink-3); font-weight: 400; font-size: 11px; }
.topbar-nav { display: flex; gap: 18px; font-size: 14px; color: var(--ink-2); }
.topbar-nav a { transition: color 0.2s; }
.topbar-nav a:hover { color: var(--accent); }
@media (max-width: 640px) { .topbar-nav { display: none; } }

/* Hero */
.hero { padding: 72px 20px 56px; text-align: center; }
.hero-badge {
  display: inline-block; font-size: 13px; color: var(--accent);
  background: var(--brand-soft); border: 1px solid #c7d2fe;
  padding: 5px 14px; border-radius: 999px; margin-bottom: 20px;
  font-weight: 500;
}
.hero h1 {
  font-size: clamp(28px, 5vw, 44px); line-height: 1.3;
  letter-spacing: -0.5px; margin-bottom: 16px; font-weight: 800;
}
.hero .sub {
  font-size: clamp(15px, 2.2vw, 18px); color: var(--ink-2);
  max-width: 640px; margin: 0 auto 32px; line-height: 1.7;
}
.cta-row { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 28px; border-radius: 12px; font-size: 15px; font-weight: 600;
  cursor: pointer; border: none;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s, border-color 0.2s, color 0.2s;
}
.btn:hover { transform: translateY(-2px); }
.btn-wechat {
  background: var(--wechat); color: #fff;
  box-shadow: 0 6px 20px rgba(7, 193, 96, 0.3);
}
.btn-wechat:hover { background: var(--wechat-dark); box-shadow: 0 10px 28px rgba(7, 193, 96, 0.4); }
.btn-ghost {
  background: var(--card); color: var(--ink);
  border: 1px solid var(--line);
}
.btn-ghost:hover {
  border-color: var(--accent); color: var(--accent);
  box-shadow: 0 4px 12px rgba(124, 58, 237, 0.12);
}

/* 区块 */
.section { padding: 56px 20px; }
.section + .section { padding-top: 0; }
.sec-title {
  font-size: clamp(22px, 3.4vw, 30px); text-align: center;
  margin-bottom: 8px; font-weight: 700; letter-spacing: -0.3px;
}
.sec-sub {
  text-align: center; color: var(--ink-3); font-size: 15px;
  margin-bottom: 36px; font-weight: 400;
}

/* 数据条 */
.stat-bar {
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 0;
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 28px 16px;
  box-shadow: var(--shadow);
  margin: 0 auto;
}
.stat-item {
  text-align: center; padding: 0 12px;
  position: relative;
}
.stat-item + .stat-item::before {
  content: ""; position: absolute; left: 0; top: 20%; bottom: 20%;
  width: 1px; background: var(--line);
}
.stat-num {
  font-size: clamp(22px, 3vw, 28px); font-weight: 800;
  background: var(--brand-gradient);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
  margin-bottom: 4px; letter-spacing: -0.5px;
  line-height: 1.2;
}
.stat-label { font-size: 13px; color: var(--ink-3); }
@media (max-width: 720px) {
  .stat-bar { grid-template-columns: repeat(2, 1fr); gap: 24px 0; padding: 20px 12px; }
  .stat-item:nth-child(odd) + .stat-item::before { display: none; }
}

/* 卡片网格 */
.grid { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 720px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* 通用卡片 */
.card {
  position: relative; overflow: hidden;
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 24px;
  transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
}
.card::before {
  content: ""; position: absolute; left: 0; top: 16px; bottom: 16px;
  width: 4px; border-radius: 0 4px 4px 0;
  background: var(--brand-gradient);
  opacity: 0; transition: opacity 0.25s;
}
.card:hover {
  transform: translateY(-4px);
  border-color: rgba(124, 58, 237, 0.3);
  box-shadow: var(--shadow-card-hover);
}
.card:hover::before { opacity: 1; }

.card h3 { font-size: 17px; margin-bottom: 8px; font-weight: 700; }
.card p { font-size: 14.5px; color: var(--ink-2); line-height: 1.65; }
.card .num {
  display: inline-flex; width: 32px; height: 32px; border-radius: 10px;
  background: var(--brand-gradient); color: #fff;
  align-items: center; justify-content: center;
  font-weight: 700; font-size: 14px; margin-bottom: 14px;
  box-shadow: 0 4px 10px rgba(124, 58, 237, 0.2);
}
.card.pain::before {
  background: linear-gradient(180deg, #f43f5e 0%, #ef4444 100%);
  opacity: 1;
}
.card.pain:hover { border-color: rgba(239, 68, 68, 0.3); box-shadow: 0 12px 32px rgba(244, 63, 94, 0.1); }
.card.pain h3 { color: #be123c; }

/* icon 容器 */
.icon-box {
  width: 56px; height: 56px; border-radius: 14px;
  background: var(--brand-gradient); color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 24px; margin-bottom: 16px;
  box-shadow: 0 6px 16px rgba(124, 58, 237, 0.25);
}

/* 行业卡 */
.industry-card {
  display: flex; gap: 12px; padding: 18px 20px;
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  transition: border-color 0.2s, transform 0.2s;
}
.industry-card:hover {
  border-color: rgba(124, 58, 237, 0.3);
  transform: translateX(4px);
}
.industry-dot {
  width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0;
  background: var(--brand-gradient);
  margin-top: 9px;
  box-shadow: 0 0 0 4px rgba(124, 58, 237, 0.1);
}
.industry-name { font-weight: 700; margin-bottom: 4px; font-size: 15px; }
.industry-desc { font-size: 13.5px; color: var(--ink-2); line-height: 1.6; }

/* 案例卡（纯描述，不链接） */
.case-card {
  display: block; position: relative; overflow: hidden;
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 24px;
  transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
}
.case-card::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0;
  width: 5px; background: var(--brand-gradient);
}
.case-card:hover {
  transform: translateY(-4px);
  border-color: rgba(124, 58, 237, 0.3);
  box-shadow: var(--shadow-card-hover);
}
.case-tag {
  display: inline-block; font-size: 12px; color: var(--accent);
  background: var(--brand-soft); padding: 3px 10px; border-radius: 999px;
  margin-bottom: 12px; font-weight: 500;
  border: 1px solid #c7d2fe;
}
.case-card h3 { font-size: 16px; margin-bottom: 8px; font-weight: 700; }
.case-card p { font-size: 14px; color: var(--ink-2); line-height: 1.65; }

/* 适合谁 */
.fit-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 720px) { .fit-grid { grid-template-columns: 1fr; } }
.fit-card {
  border-radius: var(--radius); padding: 24px;
  border: 1px solid var(--line);
}
.fit-yes {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.04) 0%, rgba(124, 58, 237, 0.04) 100%);
  border-color: rgba(124, 58, 237, 0.2);
}
.fit-no {
  background: var(--line-2);
  border-color: var(--line);
}
.fit-title {
  font-size: 15px; font-weight: 700; margin-bottom: 14px;
  display: flex; align-items: center; gap: 8px;
}
.fit-yes .fit-title { color: var(--accent); }
.fit-no .fit-title { color: var(--ink-2); }
.fit-list { list-style: none; }
.fit-list li {
  font-size: 14px; color: var(--ink-2); padding: 6px 0;
  padding-left: 22px; position: relative; line-height: 1.65;
}
.fit-yes .fit-list li::before {
  content: "✓"; position: absolute; left: 0; color: var(--accent);
  font-weight: 700; font-size: 14px;
}
.fit-no .fit-list li::before {
  content: "—"; position: absolute; left: 0; color: var(--ink-3);
}

/* FAQ */
.faq details {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); margin-bottom: 12px; overflow: hidden;
  transition: border-color 0.2s;
}
.faq details:hover { border-color: rgba(124, 58, 237, 0.2); }
.faq details[open] { border-color: rgba(124, 58, 237, 0.3); }
.faq summary {
  cursor: pointer; padding: 18px 22px; font-weight: 600; font-size: 15.5px;
  list-style: none; display: flex; justify-content: space-between; align-items: center;
  transition: color 0.2s;
}
.faq summary:hover { color: var(--accent); }
.faq summary::after {
  content: "+"; color: var(--ink-3); font-size: 22px; font-weight: 300;
  transition: transform 0.2s, color 0.2s;
}
.faq details[open] summary::after {
  content: "−"; color: var(--accent);
}
.faq details p {
  padding: 0 22px 18px; color: var(--ink-2);
  font-size: 14.5px; line-height: 1.7;
}

/* 底部 CTA 横幅 */
.final-cta {
  background: linear-gradient(135deg, #1e1b4b 0%, #312e81 50%, #4c1d95 100%);
  color: #fff; text-align: center; padding: 72px 20px;
  position: relative; overflow: hidden;
}
.final-cta::before {
  content: ""; position: absolute; top: -100px; left: 50%; transform: translateX(-50%);
  width: 700px; height: 700px; max-width: 200%;
  background: radial-gradient(circle, rgba(167, 139, 250, 0.22) 0%, transparent 70%);
  pointer-events: none;
}
.final-cta h2 {
  font-size: clamp(22px, 3.4vw, 30px); margin-bottom: 12px;
  font-weight: 700; position: relative;
}
.final-cta p {
  color: rgba(255, 255, 255, 0.8); margin-bottom: 28px;
  font-size: 15px; position: relative; line-height: 1.7;
}
.final-cta .btn { position: relative; }
.final-cta .btn-wechat {
  box-shadow: 0 8px 24px rgba(7, 193, 96, 0.4);
}

/* 页脚 */
.footer {
  padding: 32px 20px; text-align: center; color: var(--ink-3);
  font-size: 13px; border-top: 1px solid var(--line);
}
.footer .svc-links {
  margin-bottom: 14px; display: flex; gap: 18px;
  justify-content: center; flex-wrap: wrap;
}
.footer .svc-links a {
  color: var(--ink-2); transition: color 0.2s;
  font-size: 13px;
}
.footer .svc-links a:hover { color: var(--accent); }

/* 悬浮微信 CTA */
.wx-fab {
  position: fixed; right: 20px; bottom: 24px; z-index: 100;
  background: var(--wechat); color: #fff; border: none; cursor: pointer;
  padding: 13px 20px; border-radius: 999px; font-size: 14.5px; font-weight: 600;
  box-shadow: 0 8px 24px rgba(7, 193, 96, 0.4);
  display: inline-flex; align-items: center; gap: 8px;
  transition: transform 0.2s, box-shadow 0.2s;
}
.wx-fab:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(7, 193, 96, 0.5);
}
.wx-pop {
  position: fixed; right: 20px; bottom: 84px; z-index: 100;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: 0 16px 48px rgba(15, 23, 42, 0.16);
  padding: 22px; width: 260px; display: none;
  animation: pop-in 0.2s ease-out;
}
@keyframes pop-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
.wx-pop.open { display: block; }
.wx-pop h4 { font-size: 15px; margin-bottom: 6px; font-weight: 700; }
.wx-pop p { font-size: 13px; color: var(--ink-2); margin-bottom: 14px; }
.wx-id-row { display: flex; gap: 8px; }
.wx-id {
  flex: 1; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius-xs);
  padding: 9px 12px; font-family: ui-monospace, monospace; font-size: 14px; color: var(--ink);
}
.wx-copy {
  background: var(--wechat); color: #fff; border: none; border-radius: var(--radius-xs);
  padding: 0 14px; font-size: 13.5px; cursor: pointer; white-space: nowrap;
  transition: background 0.2s;
}
.wx-copy:hover { background: var(--wechat-dark); }
.wx-note { margin-top: 10px; font-size: 12px; color: var(--ink-3); }