/* ============ 点一点网络 官网样式 · 深色科技风 ============ */
:root {
  --bg: #05070f;
  --bg2: #0a0e1c;
  --card: rgba(255, 255, 255, 0.04);
  --card-border: rgba(255, 255, 255, 0.09);
  --text: #e8ecf6;
  --muted: #97a0b8;
  --cyan: #22d3ee;
  --blue: #3b82f6;
  --purple: #a855f7;
  --pink: #ec4899;
  --grad: linear-gradient(90deg, #22d3ee, #3b82f6 35%, #a855f7 70%, #ec4899);
  --radius: 16px;
  --shadow: 0 10px 40px rgba(0, 0, 0, 0.45);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.wrap { width: min(1200px, 92%); margin: 0 auto; }
.wrap.narrow { width: min(860px, 92%); }
.grad-text {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

/* ---------- 导航 ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  transition: background 0.3s, box-shadow 0.3s;
  padding: 14px 0;
}
.nav.scrolled {
  background: rgba(5, 7, 15, 0.85);
  backdrop-filter: blur(14px);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
  padding: 8px 0;
}
.nav-inner { width: min(1300px, 94%); margin: 0 auto; display: flex; align-items: center; justify-content: space-between; }
.nav-logo { display: flex; align-items: center; gap: 12px; }
.nav-logo img { height: 46px; width: auto; }
.nav-logo-text { font-size: 20px; font-weight: 700; line-height: 1.25; display: flex; flex-direction: column; }
.nav-logo-text em { font-style: normal; font-size: 11px; font-weight: 400; color: var(--muted); letter-spacing: 2px; }
.nav-menu { display: flex; align-items: center; gap: 30px; }
.nav-menu a { font-size: 15px; color: var(--muted); position: relative; padding: 6px 0; transition: color 0.25s; }
.nav-menu a:hover, .nav-menu a.on { color: #fff; }
.nav-menu a:not(.nav-cta)::after {
  content: ""; position: absolute; left: 50%; bottom: 0; width: 0; height: 2px;
  background: var(--grad); border-radius: 2px; transition: all 0.3s; transform: translateX(-50%);
}
.nav-menu a:not(.nav-cta):hover::after, .nav-menu a.on::after { width: 100%; }
.nav-cta {
  background: var(--grad); color: #fff !important; padding: 9px 22px !important;
  border-radius: 99px; font-weight: 600; box-shadow: 0 4px 18px rgba(168, 85, 247, 0.4);
  transition: transform 0.25s, box-shadow 0.25s;
}
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(236, 72, 153, 0.5); }
.nav-burger { display: none; background: none; border: none; cursor: pointer; flex-direction: column; gap: 5px; padding: 6px; }
.nav-burger span { width: 24px; height: 2px; background: #fff; border-radius: 2px; transition: 0.3s; }

/* ---------- 首屏 ---------- */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; overflow: hidden; }
.hero-video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.hero-mask {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(5, 7, 15, 0.72) 0%, rgba(5, 7, 15, 0.45) 40%, rgba(5, 7, 15, 0.92) 100%),
    radial-gradient(ellipse at 70% 20%, rgba(168, 85, 247, 0.18), transparent 55%);
}
.hero-particles { position: absolute; inset: 0; pointer-events: none; }
.hero-content { position: relative; z-index: 2; padding: 130px 0 90px; }
/* 从左到右平滑淡出的横向渐变：压住文字区后面的视频文字，无可见边界，右侧保持明亮 */
.hero-scrim {
  position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background: linear-gradient(90deg,
    rgba(5, 7, 15, 0.9) 0%,
    rgba(5, 7, 15, 0.78) 40%,
    rgba(5, 7, 15, 0.45) 58%,
    rgba(5, 7, 15, 0.12) 74%,
    rgba(5, 7, 15, 0) 88%);
}
.hero-tag {
  display: inline-block; font-size: 13px; letter-spacing: 4px; color: var(--cyan);
  border: 1px solid rgba(34, 211, 238, 0.35); border-radius: 99px; padding: 6px 18px;
  background: rgba(34, 211, 238, 0.06); margin-bottom: 26px; font-weight: 600;
}
.hero-title { font-size: clamp(38px, 6vw, 68px); line-height: 1.18; font-weight: 800; letter-spacing: 1px; text-shadow: 0 2px 26px rgba(0, 0, 0, 0.7), 0 1px 4px rgba(0, 0, 0, 0.85); }
.hero-sub { margin-top: 22px; font-size: clamp(15px, 1.6vw, 18px); color: #c6cde0; max-width: 720px; text-shadow: 0 1px 14px rgba(0, 0, 0, 0.85); }
.hero-btns { display: flex; gap: 18px; margin-top: 38px; flex-wrap: wrap; }
.btn {
  display: inline-block; padding: 14px 36px; border-radius: 99px; font-size: 16px; font-weight: 600;
  transition: transform 0.25s, box-shadow 0.25s, background 0.25s; cursor: pointer; border: none; text-align: center;
}
.btn-primary { background: var(--grad); color: #fff; box-shadow: 0 6px 24px rgba(168, 85, 247, 0.45); }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 32px rgba(236, 72, 153, 0.5); }
.btn-ghost { border: 1px solid rgba(255, 255, 255, 0.35); color: #fff; background: rgba(255, 255, 255, 0.05); backdrop-filter: blur(6px); }
.btn-ghost:hover { background: rgba(255, 255, 255, 0.12); transform: translateY(-3px); }
.btn-block { width: 100%; }

.hero-stats { display: flex; gap: clamp(24px, 4vw, 60px); margin-top: 64px; flex-wrap: wrap; }
.stat { display: flex; flex-direction: column; }
.stat strong { font-size: clamp(34px, 4vw, 52px); font-weight: 800; line-height: 1; background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.stat em { font-style: normal; font-size: 20px; font-weight: 700; color: #fff; margin-left: 2px; }
.stat span { font-size: 13px; color: var(--muted); margin-top: 8px; }
.stat strong, .stat em { display: inline; }
.hero-scroll {
  position: absolute; bottom: 28px; left: 50%; transform: translateX(-50%); z-index: 2;
  width: 26px; height: 42px; border: 2px solid rgba(255, 255, 255, 0.4); border-radius: 14px;
}
.hero-scroll span {
  position: absolute; left: 50%; top: 8px; width: 4px; height: 8px; margin-left: -2px;
  background: #fff; border-radius: 2px; animation: scrollDot 1.6s infinite;
}
@keyframes scrollDot { 0% { opacity: 1; transform: translateY(0); } 70% { opacity: 0; transform: translateY(14px); } 100% { opacity: 0; } }

/* ---------- 通用区块 ---------- */
.section { padding: 96px 0; }
.section-alt {
  background:
    radial-gradient(ellipse at 10% 0%, rgba(59, 130, 246, 0.07), transparent 50%),
    radial-gradient(ellipse at 90% 100%, rgba(168, 85, 247, 0.08), transparent 50%),
    var(--bg2);
}
.sec-head { text-align: center; margin-bottom: 56px; }
.sec-tag { font-size: 13px; letter-spacing: 4px; color: var(--cyan); font-weight: 600; margin-bottom: 12px; }
.sec-title { font-size: clamp(26px, 3.4vw, 40px); font-weight: 800; }
.sec-desc { color: var(--muted); margin-top: 14px; font-size: 16px; }
.sec-more { text-align: center; margin-top: 48px; }
.grid { display: grid; gap: 26px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--card); border: 1px solid var(--card-border); border-radius: var(--radius);
  padding: 34px 30px; transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
  position: relative; overflow: hidden;
}
.card:hover { transform: translateY(-6px); border-color: rgba(168, 85, 247, 0.5); box-shadow: 0 14px 44px rgba(88, 28, 135, 0.25); }
.card h3 { font-size: 19px; margin-bottom: 12px; }
.card p { color: var(--muted); font-size: 14.5px; }
.card-more { display: inline-block; margin-top: 16px; font-size: 14px; color: var(--cyan); font-weight: 600; }

/* 服务卡片 */
.service-card .service-ico {
  width: 68px; height: 68px; border-radius: 18px; display: flex; align-items: center; justify-content: center;
  margin-bottom: 22px; color: #fff;
}
.ico-wx { background: linear-gradient(135deg, #22d3ee, #3b82f6); box-shadow: 0 8px 24px rgba(34, 211, 238, 0.3); }
.ico-dy { background: linear-gradient(135deg, #a855f7, #ec4899); box-shadow: 0 8px 24px rgba(236, 72, 153, 0.3); }
.ico-net { background: linear-gradient(135deg, #3b82f6, #a855f7); box-shadow: 0 8px 24px rgba(59, 130, 246, 0.3); }

/* 案例卡片 */
.case-cover {
  height: 190px; border-radius: 12px; margin: -6px -6px 20px; position: relative; overflow: hidden;
  display: flex; align-items: flex-end; padding: 20px;
  background-color: #171a2b; background-size: cover; background-position: center;
}
.case-cover::before { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(5, 7, 15, 0.05) 30%, rgba(5, 7, 15, 0.88) 100%); }
.case-cover strong { position: relative; font-size: 22px; font-weight: 800; text-shadow: 0 2px 12px rgba(0, 0, 0, 0.6); letter-spacing: 1px; }
.case-genre {
  position: absolute; top: 14px; left: 14px; z-index: 2; font-size: 12px; padding: 4px 12px;
  border-radius: 99px; background: rgba(0, 0, 0, 0.45); color: #fff; backdrop-filter: blur(4px); border: 1px solid rgba(255,255,255,0.2);
}
.case-body .case-platform {
  display: inline-block; margin-top: 14px; font-size: 12px; color: var(--cyan);
  border: 1px solid rgba(34, 211, 238, 0.35); border-radius: 99px; padding: 3px 12px; background: rgba(34, 211, 238, 0.06);
}
.case-points { margin-top: 14px; padding-left: 18px; color: var(--muted); font-size: 13.5px; }
.case-points li { margin-bottom: 6px; }

/* 新闻卡片 */
.news-meta { display: flex; align-items: center; gap: 14px; margin-bottom: 14px; font-size: 13px; color: var(--muted); }
.news-cat { color: var(--purple); font-weight: 600; border: 1px solid rgba(168, 85, 247, 0.35); padding: 2px 10px; border-radius: 99px; background: rgba(168, 85, 247, 0.07); }
.news-card h3 { font-size: 17px; line-height: 1.5; }

/* 优势 */
.adv-item { display: flex; gap: 22px; padding: 28px; border-radius: var(--radius); background: var(--card); border: 1px solid var(--card-border); transition: 0.3s; }
.adv-item:hover { border-color: rgba(34, 211, 238, 0.4); transform: translateY(-4px); }
.adv-num { font-size: 40px; font-weight: 800; line-height: 1; background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; opacity: 0.9; }
.adv-item h3 { font-size: 18px; margin-bottom: 8px; }
.adv-item p { color: var(--muted); font-size: 14.5px; }

/* 流程 */
.flow-line { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; position: relative; }
.flow-step { text-align: center; padding: 30px 16px; border-radius: var(--radius); background: var(--card); border: 1px solid var(--card-border); transition: 0.3s; }
.flow-step:hover { transform: translateY(-6px); border-color: rgba(168, 85, 247, 0.5); }
.flow-num {
  width: 52px; height: 52px; margin: 0 auto 16px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
  background: var(--grad); font-size: 20px; font-weight: 800; color: #fff; box-shadow: 0 6px 20px rgba(168, 85, 247, 0.4);
}
.flow-step h3 { font-size: 17px; margin-bottom: 8px; }
.flow-step p { font-size: 13px; color: var(--muted); }

/* CTA band */
.cta-band {
  padding: 90px 0; text-align: center;
  background: linear-gradient(120deg, rgba(34, 211, 238, 0.12), rgba(168, 85, 247, 0.14) 50%, rgba(236, 72, 153, 0.12)), var(--bg2);
  border-top: 1px solid var(--card-border); border-bottom: 1px solid var(--card-border);
}
.cta-band h2 { font-size: clamp(26px, 3.4vw, 40px); font-weight: 800; }
.cta-band p { color: var(--muted); margin-top: 12px; }
.cta-band .hero-btns { justify-content: center; }

/* ---------- 内页 hero ---------- */
.page-hero {
  padding: 170px 0 80px; text-align: center;
  background:
    radial-gradient(ellipse at 20% 10%, rgba(34, 211, 238, 0.1), transparent 50%),
    radial-gradient(ellipse at 80% 30%, rgba(236, 72, 153, 0.1), transparent 50%),
    linear-gradient(180deg, var(--bg2), var(--bg));
  border-bottom: 1px solid var(--card-border);
}
.page-hero h1 { font-size: clamp(30px, 4.4vw, 52px); font-weight: 800; }
.page-hero p { color: var(--muted); margin-top: 16px; max-width: 760px; margin-left: auto; margin-right: auto; }
.page-hero .sec-tag { margin-bottom: 14px; }

/* ---------- services split ---------- */
.split { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 60px; align-items: center; }
.split-rev { direction: rtl; }
.split-rev > * { direction: ltr; }
.split .sec-title { margin-bottom: 18px; }
.split p { color: var(--muted); margin-bottom: 14px; }
.tick-list { list-style: none; margin: 20px 0 30px; }
.tick-list li { padding-left: 30px; position: relative; margin-bottom: 12px; color: #c6cde0; font-size: 15px; }
.tick-list li::before {
  content: "✓"; position: absolute; left: 0; top: 1px; width: 20px; height: 20px; border-radius: 50%;
  background: rgba(34, 211, 238, 0.15); color: var(--cyan); font-size: 12px; display: flex; align-items: center; justify-content: center; font-weight: 700;
}
.split-visual {
  min-height: 360px; border-radius: 20px; border: 1px solid var(--card-border);
  display: flex; flex-wrap: wrap; gap: 14px; align-content: flex-end; justify-content: center; padding: 30px;
  position: relative; overflow: hidden;
  background-color: #171a2b; background-size: cover; background-position: center;
}
.split-visual::before { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(5, 7, 15, 0) 40%, rgba(5, 7, 15, 0.85) 100%); }
.vis-chip {
  position: relative; z-index: 2; background: rgba(0, 0, 0, 0.45); border: 1px solid rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(8px); border-radius: 12px; padding: 14px 24px; font-weight: 700; font-size: 15px;
}

/* ---------- cases filter ---------- */
.filter-bar { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; margin-bottom: 44px; }
.filter-btn {
  padding: 9px 24px; border-radius: 99px; border: 1px solid var(--card-border); color: var(--muted);
  font-size: 14.5px; transition: 0.25s; background: var(--card);
}
.filter-btn:hover, .filter-btn.on { color: #fff; border-color: transparent; background: var(--grad); }

/* ---------- about ---------- */
.about-stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; align-content: center; }
.stat-box { background: var(--card); border: 1px solid var(--card-border); border-radius: 14px; padding: 26px 20px; text-align: center; }
.stat-box strong { display: block; font-size: 30px; font-weight: 800; background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.stat-box span { font-size: 13px; color: var(--muted); }
.timeline { position: relative; max-width: 860px; margin: 0 auto; padding-left: 30px; }
.timeline::before { content: ""; position: absolute; left: 8px; top: 0; bottom: 0; width: 2px; background: linear-gradient(180deg, #22d3ee, #a855f7, #ec4899); opacity: 0.5; }
.tl-item { position: relative; margin-bottom: 34px; padding-left: 30px; }
.tl-item::before {
  content: ""; position: absolute; left: -28px; top: 8px; width: 14px; height: 14px; border-radius: 50%;
  background: var(--grad); box-shadow: 0 0 0 4px rgba(168, 85, 247, 0.2);
}
.tl-year { font-size: 14px; font-weight: 700; color: var(--cyan); letter-spacing: 1px; }
.tl-item h3 { font-size: 18px; margin: 4px 0; }
.tl-item p { color: var(--muted); font-size: 14.5px; }
.tech-wall { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; margin-top: 40px; }
.tech-wall span {
  padding: 10px 22px; border-radius: 99px; background: var(--card); border: 1px solid var(--card-border);
  font-size: 14px; color: #c6cde0; transition: 0.25s;
}
.tech-wall span:hover { border-color: var(--cyan); color: #fff; transform: translateY(-2px); }

/* ---------- process ---------- */
.proc-steps { display: grid; gap: 22px; max-width: 900px; margin: 0 auto; }
.proc { background: var(--card); border: 1px solid var(--card-border); border-radius: var(--radius); padding: 30px 34px; position: relative; transition: 0.3s; }
.proc:hover { border-color: rgba(34, 211, 238, 0.45); transform: translateX(6px); }
.proc-num { font-size: 13px; font-weight: 800; letter-spacing: 3px; color: var(--cyan); }
.proc h3 { font-size: 20px; margin: 8px 0 10px; }
.proc p { color: var(--muted); font-size: 15px; }
.proc-out { margin-top: 12px; font-size: 13.5px !important; color: var(--purple) !important; font-weight: 600; }
.faq-list { max-width: 860px; margin: 0 auto; }
.faq-item { border: 1px solid var(--card-border); border-radius: 14px; margin-bottom: 14px; background: var(--card); overflow: hidden; }
.faq-q {
  width: 100%; background: none; border: none; color: var(--text); font-size: 16px; font-weight: 600;
  padding: 20px 24px; text-align: left; cursor: pointer; display: flex; justify-content: space-between; align-items: center; font-family: inherit;
}
.faq-q span { font-size: 22px; color: var(--cyan); transition: 0.3s; font-weight: 400; }
.faq-item.open .faq-q span { transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.35s ease; }
.faq-a p { padding: 0 24px 20px; color: var(--muted); font-size: 14.5px; }
.faq-a a { color: var(--cyan); }

/* ---------- news detail ---------- */
.crumbs { font-size: 13.5px; color: var(--muted); margin-bottom: 20px; }
.crumbs a:hover { color: var(--cyan); }
.news-title { font-size: clamp(24px, 3vw, 34px); line-height: 1.4; margin: 10px 0 30px; }
.news-content { color: #c6cde0; font-size: 16px; line-height: 1.9; }
.news-content p { margin-bottom: 18px; }
.news-content ul { padding-left: 22px; margin-bottom: 18px; }
.news-content li { margin-bottom: 8px; }
.news-share { border-top: 1px solid var(--card-border); margin-top: 36px; padding-top: 18px; font-size: 13.5px; color: var(--muted); }
.news-share a { color: var(--cyan); }
.news-cta { margin-top: 40px; text-align: center; padding: 36px; }
.news-cta .btn { margin-top: 16px; }
.empty-tip { grid-column: 1 / -1; text-align: center; color: var(--muted); padding: 40px 0; }
.pager { display: flex; gap: 10px; justify-content: center; margin-top: 44px; }
.pager-btn { width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; border-radius: 10px; border: 1px solid var(--card-border); color: var(--muted); }
.pager-btn.on, .pager-btn:hover { background: var(--grad); color: #fff; border-color: transparent; }

/* ---------- contact ---------- */
.contact-form { background: var(--card); border: 1px solid var(--card-border); border-radius: var(--radius); padding: 40px; }
.contact-form .sec-title { margin-bottom: 28px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.contact-form label { display: block; font-size: 14px; color: #c6cde0; margin-bottom: 18px; }
.contact-form label i { color: var(--pink); font-style: normal; margin-left: 2px; }
.contact-form input, .contact-form select, .contact-form textarea {
  width: 100%; margin-top: 8px; padding: 13px 16px; border-radius: 10px; font-size: 15px;
  background: rgba(255, 255, 255, 0.05); border: 1px solid var(--card-border); color: var(--text);
  font-family: inherit; transition: border-color 0.25s; outline: none;
}
.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus { border-color: var(--cyan); }
.contact-form select option { background: var(--bg2); color: var(--text); }
.form-tip { margin-top: 14px; text-align: center; font-size: 14px; min-height: 20px; }
.form-tip.ok { color: #4ade80; }
.form-tip.err { color: var(--pink); }
.contact-side { display: flex; flex-direction: column; gap: 22px; }
.side-card h3 { margin-bottom: 18px; font-size: 18px; }
.side-line { display: flex; flex-direction: column; margin-bottom: 14px; font-size: 14.5px; color: var(--muted); }
.side-line strong { color: var(--text); font-size: 13px; margin-bottom: 3px; }
.side-line a { color: var(--cyan); font-size: 18px; font-weight: 700; }
.side-note { margin-top: 14px; font-size: 13px; color: var(--muted); }

/* ---------- footer ---------- */
.footer { background: #04060c; border-top: 1px solid var(--card-border); padding-top: 64px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 44px; padding-bottom: 44px; }
.footer-brand img { height: 52px; width: auto; margin-bottom: 18px; }
.footer-brand p { color: var(--muted); font-size: 13.5px; margin-bottom: 12px; }
.footer-contact { display: flex; flex-direction: column; gap: 4px; }
.footer-contact strong { color: var(--cyan); font-size: 17px; }
.footer-col h4 { font-size: 15px; margin-bottom: 18px; color: #fff; }
.footer-col a { display: block; color: var(--muted); font-size: 13.5px; margin-bottom: 10px; transition: 0.2s; }
.footer-col a:hover { color: var(--cyan); transform: translateX(3px); }
.footer-news { line-height: 1.5; }
.footer-bar { border-top: 1px solid var(--card-border); padding: 20px 0; }
.footer-bar .wrap { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; }
.footer-bar p { font-size: 12.5px; color: #6b7490; }
.footer-bar a { color: #6b7490; }
.footer-bar a:hover { color: var(--cyan); }

/* 浮动微信咨询按钮 */
.float-call {
  position: fixed; right: 22px; bottom: 22px; z-index: 90; width: 54px; height: 54px; border-radius: 50%;
  background: var(--grad); color: #fff; display: flex; align-items: center; justify-content: center;
  box-shadow: 0 8px 26px rgba(168, 85, 247, 0.5); animation: pulse 2s infinite; cursor: pointer;
}

/* 微信二维码弹窗 */
.wx-modal {
  position: fixed; inset: 0; z-index: 120; display: none; align-items: center; justify-content: center;
  background: rgba(3, 5, 12, 0.78); backdrop-filter: blur(6px); padding: 20px;
}
.wx-modal.open { display: flex; }
.wx-box {
  background: #fff; border-radius: 18px; padding: 30px 28px 26px; text-align: center; max-width: 330px; width: 100%;
  position: relative; color: #232842; box-shadow: 0 24px 80px rgba(0, 0, 0, 0.55); animation: wxPop 0.28s ease;
}
@keyframes wxPop { from { opacity: 0; transform: scale(0.92) translateY(12px); } to { opacity: 1; transform: none; } }
.wx-box img { width: 232px; height: 232px; display: block; margin: 0 auto 16px; border-radius: 10px; }
.wx-box h3 { font-size: 19px; font-weight: 800; margin-bottom: 8px; }
.wx-box p { font-size: 14px; color: #5b6478; line-height: 1.7; }
.wx-box p strong { color: #232842; }
.wx-close { position: absolute; top: 6px; right: 14px; font-size: 28px; line-height: 1; background: none; border: none; cursor: pointer; color: #99a; padding: 6px; }
.wx-close:hover { color: #333; }

/* 联系页二维码卡片 */
.side-wechat { text-align: center; }
.side-wechat .qr-img { width: 200px; height: 200px; border-radius: 10px; margin: 14px auto; display: block; }
.side-wechat h3 { margin-bottom: 0; }
@keyframes pulse {
  0% { box-shadow: 0 8px 26px rgba(168, 85, 247, 0.5), 0 0 0 0 rgba(168, 85, 247, 0.45); }
  70% { box-shadow: 0 8px 26px rgba(168, 85, 247, 0.5), 0 0 0 16px rgba(168, 85, 247, 0); }
  100% { box-shadow: 0 8px 26px rgba(168, 85, 247, 0.5), 0 0 0 0 rgba(168, 85, 247, 0); }
}

/* 入场动画 */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .flow-line { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; gap: 36px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero-content { padding: 120px 0 80px; }
}
@media (max-width: 720px) {
  html, body { overflow-x: hidden; }
  .section { padding: 64px 0; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .flow-line { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .hero { min-height: 92vh; }
  .hero-content { padding: 110px 0 76px; }
  .hero-stats { gap: 20px 26px; margin-top: 44px; }
  .stat strong { font-size: 30px; }
  .stat em { font-size: 16px; }
  .stat span { font-size: 12px; }
  .hero-btns .btn { width: 100%; }
  .case-cover { height: 210px; }
  .form-row { grid-template-columns: 1fr; }
  .nav-menu {
    position: fixed; top: 0; right: -280px; width: 260px; height: 100vh; flex-direction: column;
    background: rgba(8, 11, 22, 0.97); padding: 90px 34px; gap: 24px; transition: right 0.35s; backdrop-filter: blur(16px);
  }
  .nav-menu.open { right: 0; }
  .nav-burger { display: flex; position: relative; z-index: 110; }
  .contact-form { padding: 26px 20px; }
  .footer-bar .wrap { justify-content: center; text-align: center; }
  .float-call { right: 14px; bottom: 14px; width: 48px; height: 48px; }
  .float-call svg { width: 23px; height: 23px; }
  .wx-box img { width: 200px; height: 200px; }
  .side-wechat .qr-img { width: 180px; height: 180px; }
  .cta-band h2 { font-size: 24px; }
}
@media (max-width: 380px) {
  .flow-line { grid-template-columns: 1fr; }
  .hero-title { font-size: 30px; }
}