/* ==========================================================
   小酒窝 · 官网设计系统 v2.0
   蓝色主品牌 + 青色/暖金点缀，深色大气的 Hero + 轻盈浅色内容区
   ========================================================== */

:root {
  --ink: #0b1226;
  --ink-2: #111b3a;
  --blue: #317af7;
  --blue-deep: #1f5fd0;
  --teal: #20d6c7;
  --gold: #f0b84f;
  --violet: #6f6be8;
  --text: #1c2333;
  --muted: #64748b;
  --bg-soft: #f5f8fd;
  --line: #e6ecf5;
  --card-shadow: 0 6px 24px rgba(15, 33, 84, 0.08);
  --card-shadow-hover: 0 16px 44px rgba(15, 33, 84, 0.14);
  --radius: 18px;
  --nav-h: 72px;
  --container: 1240px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-zh: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-zh);
  color: var(--text);
  background: #fff;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 96px 0; }
.section-soft { background: var(--bg-soft); }

/* ---------- 通用标题 ---------- */
.section-head { text-align: center; margin-bottom: 64px; }
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 14px;
}
.section-tag::before,
.section-tag::after {
  content: "";
  width: 26px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--blue));
  border-radius: 2px;
}
.section-tag::after { background: linear-gradient(90deg, var(--blue), transparent); }
.section-title {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  letter-spacing: 1px;
  color: var(--ink);
}
.section-title span {
  background: linear-gradient(120deg, var(--blue), var(--teal));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.section-sub {
  max-width: 640px;
  margin: 18px auto 0;
  color: var(--muted);
  font-size: 16px;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
}
.btn svg { width: 15px; height: 15px; }
.btn-primary {
  background: linear-gradient(120deg, var(--blue) 0%, #4f97ff 100%);
  color: #fff;
  box-shadow: 0 10px 26px rgba(49, 122, 247, 0.35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 32px rgba(49, 122, 247, 0.45); }
.btn-outline {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.35);
}
.btn-outline:hover { border-color: #fff; background: rgba(255, 255, 255, 0.08); }
.btn-dark-outline {
  background: transparent;
  color: var(--ink);
  border: 1.5px solid var(--ink);
}
.btn-dark-outline:hover { background: var(--ink); color: #fff; }

/* ==========================================================
   导航
   ========================================================== */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--nav-h);
  transition: var(--transition);
}
#navbar.scrolled {
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(18px);
  box-shadow: 0 2px 20px rgba(15, 33, 84, 0.08);
}
.nav-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 21px;
  font-weight: 800;
  color: #fff;
  letter-spacing: 1px;
  transition: var(--transition);
}
#navbar.scrolled .nav-logo { color: var(--ink); }
.logo-mark {
  width: 36px; height: 36px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--blue), #63a8ff);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 16px rgba(49, 122, 247, 0.35);
  flex-shrink: 0;
}
.logo-mark svg { width: 22px; height: 22px; }
.logo-mark.gold { background: linear-gradient(135deg, var(--gold), #f6cf7d); box-shadow: 0 6px 16px rgba(240, 184, 79, 0.4); }
.logo-mark.teal { background: linear-gradient(135deg, var(--teal), #63e5da); box-shadow: 0 6px 16px rgba(32, 214, 199, 0.4); }
.nav-logo small {
  font-size: 11px;
  font-weight: 500;
  opacity: 0.55;
  letter-spacing: 2px;
  margin-left: 2px;
}
/* 品牌LOGO图片 */
.logo-img {
  height: 46px;
  width: auto;
  background: #fff;
  padding: 7px 14px;
  border-radius: 14px;
  box-shadow: 0 4px 14px rgba(15, 33, 84, 0.12);
  display: block;
}
#navbar.scrolled .logo-img { box-shadow: none; }

.nav-menu {
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav-menu > li > a {
  display: block;
  padding: 9px 16px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.82);
  transition: var(--transition);
}
#navbar.scrolled .nav-menu > li > a { color: var(--text); }
#navbar.scrolled .nav-menu > li > a:hover { color: var(--blue); }
.nav-menu > li > a:hover { color: #fff; background: rgba(255, 255, 255, 0.1); }
#navbar.scrolled .nav-menu > li > a:hover { background: rgba(49, 122, 247, 0.08); }
.nav-menu > li > a.active { color: #fff; background: rgba(255, 255, 255, 0.14); font-weight: 600; }
#navbar.scrolled .nav-menu > li > a.active { color: var(--blue); background: rgba(49, 122, 247, 0.1); }
.nav-menu .nav-lab-link a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
}
.nav-menu .nav-lab-link a::after {
  content: "↗";
  font-size: 12px;
  opacity: 0.7;
}

.nav-actions { display: flex; align-items: center; gap: 16px; }
.nav-tel {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.5px;
}
#navbar.scrolled .nav-tel { color: var(--ink); }
.nav-tel svg { width: 16px; height: 16px; color: var(--gold); }
.nav-contact-btn { padding: 10px 22px; font-size: 14px; }

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
}
.nav-hamburger span {
  width: 24px; height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: var(--transition);
}
#navbar.scrolled .nav-hamburger span { background: var(--ink); }

.nav-mobile {
  position: fixed;
  top: var(--nav-h);
  left: 0; right: 0;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(20px);
  box-shadow: 0 20px 40px rgba(15, 33, 84, 0.12);
  padding: 12px 24px 20px;
  display: none;
  flex-direction: column;
  z-index: 999;
}
.nav-mobile.open { display: flex; }
.nav-mobile a {
  padding: 13px 8px;
  font-size: 16px;
  font-weight: 500;
  color: var(--text);
  border-bottom: 1px solid var(--line);
}
.nav-mobile a:last-child { border-bottom: none; }

/* ==========================================================
   Hero（深色大气）
   ========================================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background:
    radial-gradient(1000px 520px at 82% 18%, rgba(49, 122, 247, 0.32), transparent 60%),
    radial-gradient(760px 420px at 12% 82%, rgba(32, 214, 199, 0.16), transparent 60%),
    radial-gradient(560px 340px at 55% 108%, rgba(240, 184, 79, 0.12), transparent 65%),
    linear-gradient(160deg, #0a1024 0%, #0e1730 55%, #101d40 100%);
  overflow: hidden;
  padding: calc(var(--nav-h) + 60px) 0 90px;
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 75% 62% at 50% 42%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 75% 62% at 50% 42%, #000 30%, transparent 75%);
}
.hero-content {
  position: relative;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
  text-align: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 9px 22px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.06);
  color: rgba(255, 255, 255, 0.85);
  font-size: 14px;
  letter-spacing: 2px;
  margin-bottom: 34px;
}
.hero-badge i {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 12px var(--teal);
  animation: pulse 2s infinite;
}
@keyframes pulse { 50% { opacity: 0.4; } }

.hero-title {
  font-size: clamp(40px, 6.4vw, 76px);
  font-weight: 900;
  line-height: 1.22;
  letter-spacing: 2px;
  color: #fff;
}
.hero-title .grad {
  background: linear-gradient(115deg, #6fb2ff 5%, var(--teal) 55%, var(--gold) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-desc {
  max-width: 720px;
  margin: 28px auto 0;
  font-size: clamp(15px, 1.6vw, 19px);
  color: rgba(255, 255, 255, 0.66);
  letter-spacing: 1px;
}
.hero-actions {
  margin-top: 46px;
  display: flex;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
}

/* Hero 数据带 */
.hero-stats {
  margin-top: 84px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.stat-item {
  padding: 26px 12px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid rgba(255, 255, 255, 0.09);
  backdrop-filter: blur(8px);
  transition: var(--transition);
}
.stat-item:hover { transform: translateY(-5px); background: rgba(255, 255, 255, 0.08); }
.stat-num {
  font-size: clamp(30px, 3.6vw, 44px);
  font-weight: 900;
  letter-spacing: 1px;
  background: linear-gradient(120deg, #7cb8ff, var(--teal));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-variant-numeric: tabular-nums;
}
.stat-label {
  margin-top: 6px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  letter-spacing: 1px;
}

/* 滚动提示 */
.hero-scroll {
  position: absolute;
  bottom: 26px; left: 50%;
  transform: translateX(-50%);
  color: rgba(255, 255, 255, 0.4);
  font-size: 12px;
  letter-spacing: 3px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.hero-scroll::after {
  content: "";
  width: 1px; height: 34px;
  background: linear-gradient(rgba(255, 255, 255, 0.5), transparent);
  animation: scrollhint 2s infinite;
}
@keyframes scrollhint { 0% { transform: scaleY(0); transform-origin: top; } 50% { transform: scaleY(1); } 100% { transform: scaleY(0); transform-origin: bottom; } }

/* ==========================================================
   关于 / 定位
   ========================================================== */
.about-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 72px;
  align-items: center;
}
.about-eyebrow {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--blue);
  margin-bottom: 14px;
}
.about-h2 {
  font-size: clamp(28px, 3.6vw, 40px);
  font-weight: 800;
  color: var(--ink);
  line-height: 1.4;
}
.about-h2 em {
  font-style: normal;
  color: var(--blue);
}
.about-p {
  margin-top: 22px;
  color: var(--muted);
  font-size: 16px;
}
.about-points { margin-top: 30px; display: grid; gap: 16px; }
.about-point {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.about-point .pt-ico {
  width: 42px; height: 42px;
  border-radius: 12px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(49, 122, 247, 0.1);
  color: var(--blue);
}
.about-point .pt-ico svg { width: 20px; height: 20px; }
.about-point strong { display: block; font-size: 16px; color: var(--ink); }
.about-point p { font-size: 14px; color: var(--muted); margin-top: 2px; }

.about-visual { position: relative; }
/* 关于板块 · 数据面板 */
.about-stats-panel {
  border-radius: 24px;
  padding: 46px 42px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 38px 30px;
  background:
    radial-gradient(460px 240px at 88% 8%, rgba(49, 122, 247, 0.28), transparent 62%),
    radial-gradient(400px 240px at 8% 96%, rgba(32, 214, 199, 0.2), transparent 60%),
    radial-gradient(320px 200px at 55% 115%, rgba(240, 184, 79, 0.14), transparent 65%),
    linear-gradient(150deg, #0d1530 0%, #14224a 60%, #1a2c5e 100%);
  box-shadow: 0 20px 50px rgba(15, 33, 84, 0.22);
}
.asp-num {
  font-size: clamp(34px, 3.4vw, 44px);
  font-weight: 900;
  letter-spacing: 1px;
  line-height: 1.15;
  background: linear-gradient(120deg, #7cb8ff 10%, #20d6c7 90%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-variant-numeric: tabular-nums;
}
.asp-label {
  margin-top: 8px;
  color: #fff;
  font-size: 17px;
  font-weight: 800;
  letter-spacing: 2px;
}
.asp-desc {
  margin-top: 6px;
  color: rgba(255, 255, 255, 0.55);
  font-size: 13px;
  line-height: 1.7;
}

/* ==========================================================
   案例展示（标题 + 配图）
   ========================================================== */
.showcase-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 18px;
}
.showcase-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--card-shadow);
  transition: var(--transition);
}
.showcase-card:hover { transform: translateY(-6px); box-shadow: var(--card-shadow-hover); }
.sc-pic {
  position: relative;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  background: #0e1730;
}
.sc-pic img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 22%;
  transition: transform 0.6s ease;
}
.showcase-card:hover .sc-pic img { transform: scale(1.04); }
.sc-idx {
  position: absolute;
  top: 14px; left: 14px;
  padding: 5px 14px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  color: #fff;
  border-radius: 999px;
  background: rgba(11, 18, 38, 0.55);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(255, 255, 255, 0.25);
}
.sc-body { padding: 16px 16px 20px; }
.showcase-grid .sc-name { font-size: 15px; margin-top: 8px; }
.showcase-grid .sc-cat { font-size: 11px; letter-spacing: 1px; padding: 3px 10px; }
.showcase-grid .sc-idx { top: 10px; left: 10px; padding: 4px 11px; font-size: 11px; }
.showcase-grid .sc-pic { aspect-ratio: 4 / 5; }
.sc-cat {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--blue);
  background: rgba(49, 122, 247, 0.08);
  border: 1px solid rgba(49, 122, 247, 0.2);
  padding: 3px 12px;
  border-radius: 999px;
}
.sc-name {
  margin-top: 10px;
  font-size: 17px;
  font-weight: 800;
  color: var(--ink);
}

/* ==========================================================
   白色系主题（首页 index.html）
   ========================================================== */
.theme-light #navbar {
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(18px);
  box-shadow: 0 2px 18px rgba(15, 33, 84, 0.06);
}
.theme-light #navbar.scrolled { background: rgba(255, 255, 255, 0.95); }
.theme-light .nav-logo { color: var(--ink); }
.theme-light .logo-img { box-shadow: 0 2px 10px rgba(15, 33, 84, 0.08); }
.theme-light .nav-menu > li > a { color: var(--text); }
.theme-light .nav-menu > li > a:hover { color: var(--blue); background: rgba(49, 122, 247, 0.08); }
.theme-light .nav-menu > li > a.active { color: var(--blue); background: rgba(49, 122, 247, 0.1); }
.theme-light .nav-tel { color: var(--ink); }
.theme-light .nav-tel svg { color: var(--blue); }
.theme-light .nav-hamburger span { background: var(--ink); }

.theme-light .hero {
  background:
    radial-gradient(900px 480px at 85% 10%, rgba(49, 122, 247, 0.12), transparent 60%),
    radial-gradient(700px 420px at 6% 88%, rgba(32, 214, 199, 0.1), transparent 60%),
    radial-gradient(520px 320px at 55% 112%, rgba(240, 184, 79, 0.1), transparent 65%),
    linear-gradient(180deg, #f4f8ff 0%, #ffffff 72%);
}
.theme-light .hero-grid {
  background-image:
    linear-gradient(rgba(15, 33, 84, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 33, 84, 0.05) 1px, transparent 1px);
}
.theme-light .hero-badge {
  border-color: rgba(49, 122, 247, 0.28);
  background: rgba(49, 122, 247, 0.07);
  color: var(--blue);
  font-weight: 600;
}
.theme-light .hero-title { color: var(--ink); }
.theme-light .hero-title .grad {
  background: linear-gradient(115deg, var(--blue) 10%, #20b4c7 60%, #e09a2f 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.theme-light .hero-desc { color: var(--muted); }
.theme-light .hero .btn-outline { color: var(--ink); border: 1px solid rgba(11, 18, 38, 0.32); }
.theme-light .hero .btn-outline:hover { background: var(--ink); border-color: var(--ink); color: #fff; }
.theme-light .hero-scroll { color: rgba(28, 35, 51, 0.38); }
.theme-light .hero-scroll::after { background: linear-gradient(rgba(28, 35, 51, 0.45), transparent); }
.theme-light .stat-item {
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid var(--line);
  box-shadow: var(--card-shadow);
  backdrop-filter: none;
}
.theme-light .stat-item:hover { background: #fff; }
.theme-light .stat-num {
  background: linear-gradient(120deg, var(--blue), #14b8aa);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.theme-light .stat-label { color: var(--muted); }

.theme-light .about-stats-panel {
  background:
    radial-gradient(460px 240px at 88% 8%, rgba(49, 122, 247, 0.08), transparent 62%),
    radial-gradient(400px 240px at 8% 96%, rgba(32, 214, 199, 0.08), transparent 60%),
    #ffffff;
  border: 1px solid var(--line);
  box-shadow: var(--card-shadow-hover);
}
.theme-light .asp-num {
  background: linear-gradient(120deg, var(--blue), #14b8aa);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.theme-light .asp-label { color: var(--ink); }
.theme-light .asp-desc { color: var(--muted); }

.theme-light .cta-banner {
  background:
    radial-gradient(640px 300px at 85% 18%, rgba(49, 122, 247, 0.1), transparent 60%),
    radial-gradient(560px 300px at 12% 90%, rgba(240, 184, 79, 0.12), transparent 60%),
    linear-gradient(150deg, #f4f8ff 0%, #ffffff 70%);
  border: 1px solid var(--line);
  box-shadow: var(--card-shadow-hover);
  color: var(--ink);
}
.theme-light .cta-banner h2 { color: var(--ink); }
.theme-light .cta-banner h2 .grad,
.theme-light .cta-banner p { color: var(--muted); }

.theme-light #footer {
  background: #f6f9ff;
  border-top: 1px solid var(--line);
  color: var(--muted);
}
.theme-light .footer-top { border-bottom: 1px solid var(--line); }
.theme-light .footer-brand .nav-logo { color: var(--ink); }
.theme-light .footer-brand p { color: var(--muted); }
.theme-light .footer-col h4 { color: var(--ink); }
.theme-light .footer-col a, .theme-light .footer-col li { color: var(--muted); }
.theme-light .footer-col a:hover { color: var(--blue); }
.theme-light .footer-bottom { color: #9aa7bd; border-top: 1px solid var(--line); }
.theme-light .footer-legal a { color: #9aa7bd; }
.theme-light .footer-legal a:hover { color: var(--blue); }
.about-card-main {
  border-radius: 24px;
  overflow: hidden;
  box-shadow: var(--card-shadow-hover);
  background: #fff;
  border: 1px solid var(--line);
}
.about-card-main img { width: 100%; height: 300px; object-fit: cover; }
.about-card-caption {
  padding: 22px 26px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.about-card-caption .cap-title { font-weight: 700; font-size: 16px; color: var(--ink); }
.about-card-caption .cap-sub { font-size: 13px; color: var(--muted); }
.about-card-float {
  position: absolute;
  right: -18px;
  bottom: -26px;
  background: #fff;
  border-radius: 18px;
  box-shadow: var(--card-shadow-hover);
  padding: 20px 26px;
  border: 1px solid var(--line);
  display: flex;
  gap: 22px;
}
.about-card-float .f-item { text-align: center; }
.about-card-float .f-num {
  font-size: 26px;
  font-weight: 900;
  color: var(--blue);
  font-variant-numeric: tabular-nums;
}
.about-card-float .f-label { font-size: 12px; color: var(--muted); margin-top: 2px; }

/* ==========================================================
   发展历程
   ========================================================== */
.timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  padding-left: 34px;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 8px; top: 8px; bottom: 8px;
  width: 2px;
  background: linear-gradient(var(--blue), var(--teal), var(--gold));
  border-radius: 2px;
}
.milestone {
  position: relative;
  padding: 0 0 52px 26px;
}
.milestone:last-child { padding-bottom: 0; }
.milestone-dot {
  position: absolute;
  left: -34px; top: 6px;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--blue);
  box-shadow: 0 0 0 6px rgba(49, 122, 247, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
}
.milestone:nth-child(2) .milestone-dot { border-color: var(--blue); }
.milestone:nth-child(3) .milestone-dot { border-color: #4a9df0; }
.milestone:nth-child(4) .milestone-dot { border-color: var(--teal); }
.milestone:nth-child(5) .milestone-dot { border-color: var(--gold); }
.milestone-year {
  display: inline-block;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 2px;
  color: var(--blue);
  background: rgba(49, 122, 247, 0.09);
  border: 1px solid rgba(49, 122, 247, 0.22);
  padding: 4px 16px;
  border-radius: 999px;
  margin-bottom: 12px;
  font-variant-numeric: tabular-nums;
}
.milestone:nth-child(4) .milestone-year { color: #0e9e92; background: rgba(32, 214, 199, 0.1); border-color: rgba(32, 214, 199, 0.35); }
.milestone:nth-child(5) .milestone-year { color: #c98a1b; background: rgba(240, 184, 79, 0.14); border-color: rgba(240, 184, 79, 0.45); }
.milestone-title {
  font-size: 21px;
  font-weight: 800;
  color: var(--ink);
  margin-bottom: 8px;
}
.milestone-text {
  color: var(--muted);
  font-size: 15px;
  max-width: 640px;
}
.milestone-chips { margin-top: 14px; display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 15px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  background: #fff;
  border: 1px solid var(--line);
  color: var(--text);
}
.chip.hot { background: rgba(49, 122, 247, 0.08); border-color: rgba(49, 122, 247, 0.25); color: var(--blue); }
.chip.gold { background: rgba(240, 184, 79, 0.12); border-color: rgba(240, 184, 79, 0.4); color: #b07f1f; }

/* ==========================================================
   业务体系
   ========================================================== */
.biz-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 26px;
}
.biz-card {
  position: relative;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 38px 36px;
  overflow: hidden;
  transition: var(--transition);
  box-shadow: var(--card-shadow);
}
.biz-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--c1), var(--c2));
  opacity: 0;
  transition: var(--transition);
}
.biz-card:hover { transform: translateY(-6px); box-shadow: var(--card-shadow-hover); }
.biz-card:hover::before { opacity: 1; }
.biz-card.c-blue { --c1: #317af7; --c2: #63a8ff; }
.biz-card.c-teal { --c1: #20d6c7; --c2: #6f6be8; }
.biz-card.c-gold { --c1: #f0b84f; --c2: #f6cf7d; }
.biz-card.c-violet { --c1: #6f6be8; --c2: #a59ffb; }
.biz-icon {
  width: 58px; height: 58px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
  color: #fff;
  background: linear-gradient(135deg, var(--c1), var(--c2));
  box-shadow: 0 10px 22px rgba(15, 33, 84, 0.18);
}
.biz-icon svg { width: 27px; height: 27px; }
.biz-title {
  font-size: 22px;
  font-weight: 800;
  color: var(--ink);
  margin-bottom: 6px;
}
.biz-en {
  font-size: 12px;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 16px;
}
.biz-desc { font-size: 15px; color: var(--muted); }
.biz-services {
  margin-top: 22px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px 16px;
}
.biz-services li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  color: var(--text);
  font-weight: 500;
}
.biz-services li::before {
  content: "";
  position: absolute;
  left: 0; top: 9px;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--c1), var(--c2));
}
.biz-clients {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px dashed var(--line);
}
.biz-clients .cl-label {
  font-size: 12px;
  letter-spacing: 2px;
  color: var(--muted);
  margin-bottom: 10px;
}
.biz-clients .cl-list { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  padding: 5px 13px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  color: var(--text);
  transition: var(--transition);
}
.tag:hover { border-color: var(--c1, var(--blue)); color: var(--c1, var(--blue)); }

/* ==========================================================
   客户案例
   ========================================================== */
.case-group-title {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 0 0 26px;
  font-size: 20px;
  font-weight: 800;
  color: var(--ink);
}
.case-group-title .bar {
  width: 5px; height: 22px;
  border-radius: 4px;
  background: linear-gradient(var(--blue), var(--teal));
}
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.case-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 20px;
  overflow: hidden;
  transition: var(--transition);
  box-shadow: var(--card-shadow);
  display: flex;
  flex-direction: column;
}
.case-card:hover { transform: translateY(-6px); box-shadow: var(--card-shadow-hover); }
.case-pic {
  position: relative;
  overflow: hidden;
  background: #0e1730;
}
.case-pic img {
  width: 100%;
  height: 210px;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.case-card:hover .case-pic img { transform: scale(1.06); }
.case-pic .case-flag {
  position: absolute;
  top: 14px; left: 14px;
  padding: 5px 14px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  color: #fff;
  border-radius: 999px;
  background: rgba(11, 18, 38, 0.6);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(255, 255, 255, 0.22);
}
.case-body { padding: 24px 24px 26px; flex: 1; display: flex; flex-direction: column; }
.case-name { font-size: 17px; font-weight: 800; color: var(--ink); line-height: 1.5; }
.case-list { margin-top: 14px; display: grid; gap: 8px; }
.case-list li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  color: var(--muted);
}
.case-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--teal);
  font-weight: 800;
}
.case-list li::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--blue); top: 9px; }
.case-nums {
  margin-top: auto;
  padding-top: 18px;
  display: flex;
  gap: 26px;
}
.case-nums .cn b {
  display: block;
  font-size: 22px;
  font-weight: 900;
  color: var(--blue);
  font-variant-numeric: tabular-nums;
}
.case-nums .cn span { font-size: 12px; color: var(--muted); }

/* 直播案例横幅卡 */
.live-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.live-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--card-shadow);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.live-card:hover { transform: translateY(-6px); box-shadow: var(--card-shadow-hover); }
.live-pics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  background: var(--line);
}
.live-pics img {
  width: 100%;
  aspect-ratio: 9 / 12;
  object-fit: cover;
}
.live-body { padding: 22px 24px 26px; flex: 1; }
.live-name { font-size: 16px; font-weight: 800; color: var(--ink); line-height: 1.55; }
.live-text { margin-top: 10px; font-size: 14px; color: var(--muted); }
.live-text b { color: var(--blue); font-weight: 800; }

/* ==========================================================
   达人资源
   ========================================================== */
.influencer-group { margin-bottom: 44px; }
.influencer-group:last-child { margin-bottom: 0; }
.influencer-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  font-weight: 800;
  color: var(--ink);
  margin-bottom: 18px;
}
.influencer-label .cnt {
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  background: var(--bg-soft);
  border: 1px solid var(--line);
  padding: 3px 12px;
  border-radius: 999px;
}
.influencer-row {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 18px;
}
.inf-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 18px 12px;
  text-align: center;
  transition: var(--transition);
  box-shadow: var(--card-shadow);
}
.inf-card:hover { transform: translateY(-4px); box-shadow: var(--card-shadow-hover); }
.inf-card img {
  width: 64px; height: 64px;
  border-radius: 50%;
  margin: 0 auto 10px;
  object-fit: cover;
  border: 2px solid rgba(49, 122, 247, 0.25);
}
.inf-name { font-size: 14px; font-weight: 700; color: var(--ink); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.inf-fans { font-size: 12px; color: var(--muted); margin-top: 3px; font-variant-numeric: tabular-nums; }

/* ==========================================================
   合作伙伴
   ========================================================== */
.partner-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 18px;
}
.partner-item {
  height: 92px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 17px;
  font-weight: 800;
  color: #9aa7bd;
  letter-spacing: 2px;
  transition: var(--transition);
}
.partner-item:hover {
  color: var(--blue);
  border-color: rgba(49, 122, 247, 0.4);
  box-shadow: var(--card-shadow);
  transform: translateY(-3px);
}

/* ==========================================================
   联系我们
   ========================================================== */
.contact-wrap {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 56px;
  align-items: start;
}
.contact-info-item {
  display: flex;
  gap: 18px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}
.contact-info-item:last-child { border-bottom: none; }
.contact-icon {
  width: 48px; height: 48px;
  border-radius: 14px;
  background: rgba(49, 122, 247, 0.1);
  color: var(--blue);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.contact-icon svg { width: 22px; height: 22px; }
.contact-label { font-size: 13px; color: var(--muted); letter-spacing: 1px; }
.contact-value { font-size: 17px; font-weight: 700; color: var(--ink); margin-top: 3px; }

.contact-form {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 40px 38px;
  box-shadow: var(--card-shadow-hover);
}
.form-title { font-size: 21px; font-weight: 800; color: var(--ink); margin-bottom: 26px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-group { margin-bottom: 18px; }
.form-label { display: block; font-size: 14px; font-weight: 600; color: var(--text); margin-bottom: 8px; }
.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 13px 16px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--bg-soft);
  font-size: 15px;
  font-family: inherit;
  color: var(--text);
  outline: none;
  transition: var(--transition);
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--blue);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(49, 122, 247, 0.12);
}
.form-textarea { min-height: 110px; resize: vertical; }
.form-submit { width: 100%; justify-content: center; margin-top: 6px; }
.form-ok {
  display: none;
  text-align: center;
  padding: 40px 0 26px;
}
.form-ok.show { display: block; }
.form-ok .ok-ico {
  width: 66px; height: 66px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: rgba(32, 214, 199, 0.14);
  color: var(--teal);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 30px;
}
.form-ok p { color: var(--muted); font-size: 14px; margin-top: 6px; }

/* ==========================================================
   CTA 横幅
   ========================================================== */
.cta-banner {
  position: relative;
  border-radius: 26px;
  overflow: hidden;
  padding: 72px 48px;
  text-align: center;
  color: #fff;
  background:
    radial-gradient(640px 300px at 85% 20%, rgba(32, 214, 199, 0.28), transparent 60%),
    radial-gradient(560px 300px at 12% 90%, rgba(240, 184, 79, 0.22), transparent 60%),
    linear-gradient(150deg, #0d1530 0%, #14224a 60%, #1a2c5e 100%);
}
.cta-banner h2 { font-size: clamp(26px, 3.4vw, 38px); font-weight: 900; letter-spacing: 2px; }
.cta-banner p { margin-top: 14px; color: rgba(255, 255, 255, 0.65); font-size: 16px; letter-spacing: 1px; }
.cta-banner .btn { margin-top: 32px; }

/* ==========================================================
   页脚
   ========================================================== */
#footer { background: var(--ink); color: rgba(255, 255, 255, 0.62); padding: 72px 0 0; }
.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 52px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.footer-brand .nav-logo { margin-bottom: 18px; }
.footer-brand p { font-size: 14px; line-height: 1.9; color: rgba(255, 255, 255, 0.5); max-width: 320px; }
.footer-col h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 2px;
  margin-bottom: 20px;
}
.footer-col a, .footer-col li {
  display: block;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.55);
  padding: 6px 0;
  transition: var(--transition);
}
.footer-col a:hover { color: #fff; padding-left: 4px; }
.footer-bottom {
  padding: 22px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.38);
}
.footer-legal a { color: rgba(255, 255, 255, 0.38); }
.footer-legal a:hover { color: #fff; }

/* 回顶部 */
#back-to-top {
  position: fixed;
  right: 28px; bottom: 30px;
  width: 46px; height: 46px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--blue), #4f97ff);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition: var(--transition);
  box-shadow: 0 10px 26px rgba(49, 122, 247, 0.4);
  z-index: 900;
}
#back-to-top.show { opacity: 1; pointer-events: auto; transform: translateY(0); }

/* ==========================================================
   动效
   ========================================================== */
.fade-up, .fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.fade-in { transform: translateY(0) scale(0.98); }
.fade-up.visible, .fade-in.visible { opacity: 1; transform: none; }
.d1 { transition-delay: 0.1s; } .d2 { transition-delay: 0.2s; } .d3 { transition-delay: 0.3s; } .d4 { transition-delay: 0.4s; }

/* ==========================================================
   响应式
   ========================================================== */
@media (max-width: 1360px) {
  .showcase-grid { grid-template-columns: repeat(3, 1fr); gap: 22px; }
  .showcase-grid .sc-name { font-size: 16px; }
  .showcase-grid .sc-pic { aspect-ratio: 3 / 4; }
}
@media (max-width: 1080px) {
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .case-grid, .live-strip { grid-template-columns: repeat(2, 1fr); }
  .showcase-grid { grid-template-columns: repeat(2, 1fr); }
  .influencer-row { grid-template-columns: repeat(4, 1fr); }
  .partner-grid { grid-template-columns: repeat(4, 1fr); }
  .about-grid, .contact-wrap { grid-template-columns: 1fr; gap: 48px; }
  .about-stats-panel { grid-template-columns: 1fr 1fr; padding: 36px 30px; }
  .biz-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .section { padding: 68px 0; }
  .nav-menu, .nav-actions .nav-tel, .nav-actions .nav-contact-btn { display: none; }
  .nav-hamburger { display: flex; }
  .logo-img { height: 38px; padding: 5px 10px; border-radius: 11px; }
  .about-stats-panel { grid-template-columns: 1fr; }
  .hero { min-height: auto; }
  .case-grid, .live-strip, .form-row { grid-template-columns: 1fr; }
  .showcase-grid { grid-template-columns: 1fr; }
  .influencer-row { grid-template-columns: repeat(2, 1fr); }
  .partner-grid { grid-template-columns: repeat(2, 1fr); }
  .biz-services { grid-template-columns: 1fr; }
  .about-card-float { position: static; margin-top: 16px; justify-content: center; }
  .footer-top { grid-template-columns: 1fr; gap: 32px; }
  .contact-form { padding: 28px 22px; }
  .cta-banner { padding: 52px 26px; }
}