/* ============================================================
   无锡华尔盛官网 — 亮色科技风（大气版）
   ============================================================ */
:root {
  --bg: #f2f6ff;
  --bg-soft: #ffffff;
  --bg-card: rgba(255, 255, 255, 0.8);
  --border: rgba(80, 120, 200, 0.16);
  --border-strong: rgba(80, 130, 255, 0.42);
  --text: #131c38;
  --text-dim: #55648c;
  --blue: #2f6bff;
  --cyan: #0aa2d8;
  --purple: #7c4dff;
  --gradient: linear-gradient(120deg, #18b8e8 0%, #2f6bff 55%, #7c4dff 100%);
  --gradient-soft: linear-gradient(140deg, rgba(24, 184, 232, 0.6), rgba(47, 107, 255, 0.18) 45%, rgba(124, 77, 255, 0.6));
  --glow-blue: rgba(47, 107, 255, 0.3);
  --shadow-card: 0 18px 50px rgba(47, 107, 255, 0.16);
  --shadow-card-hover: 0 26px 68px rgba(47, 107, 255, 0.28);
  --radius: 20px;
  --nav-h: 72px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", system-ui, sans-serif;
  background: linear-gradient(180deg, #f8faff 0%, #eff4ff 55%, #eaf0fd 100%);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* 全局氛围光 */
body::before,
body::after {
  content: "";
  position: fixed;
  border-radius: 50%;
  filter: blur(130px);
  z-index: 0;
  pointer-events: none;
}
body::before {
  width: 680px; height: 680px;
  background: radial-gradient(circle, rgba(47, 107, 255, 0.20), transparent 66%);
  top: -200px; left: -200px;
}
body::after {
  width: 780px; height: 780px;
  background: radial-gradient(circle, rgba(124, 77, 255, 0.16), transparent 66%);
  bottom: -280px; right: -220px;
}

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

.container {
  width: min(1400px, 94%);
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

/* ---------- 粒子背景 ---------- */
#particles {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.5;
}

/* ---------- 滚动进度条 ---------- */
.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  width: 0;
  background: var(--gradient);
  z-index: 200;
  box-shadow: 0 0 14px var(--glow-blue);
}

/* ---------- 导航 ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 100;
  transition: background 0.35s, border-color 0.35s, box-shadow 0.35s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom-color: var(--border);
  box-shadow: 0 10px 40px rgba(60, 100, 200, 0.1);
}
.nav.scrolled::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(47, 107, 255, 0.55), transparent);
}
.nav-inner {
  width: min(1400px, 94%);
  margin: 0 auto;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo { display: flex; align-items: center; gap: 12px; }
.logo-img {
  height: 52px;
  width: auto;
  display: block;
  transition: transform 0.3s;
}
.logo:hover .logo-img { transform: scale(1.05); }
.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-links a {
  font-size: 15px;
  color: var(--text-dim);
  position: relative;
  transition: color 0.25s;
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0; bottom: -6px;
  width: 0; height: 2px;
  background: var(--gradient);
  border-radius: 2px;
  transition: width 0.3s;
}
.nav-links a:hover { color: var(--text); }
.nav-links a:hover::after { width: 100%; }
.nav-cta {
  padding: 10px 24px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: rgba(47, 107, 255, 0.1);
  color: var(--text) !important;
  font-weight: 600;
  transition: background 0.3s, box-shadow 0.3s;
}
.nav-cta:hover {
  background: rgba(47, 107, 255, 0.2);
  box-shadow: 0 0 22px var(--glow-blue);
}
.nav-cta::after { display: none; }

/* 汉堡按钮 */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  z-index: 120;
}
.hamburger span {
  width: 24px; height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  position: relative;
  overflow: hidden;
  padding: calc(var(--nav-h) + 56px) 0 96px;
}
.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.38;
  z-index: 0;
  animation: float 9s ease-in-out infinite alternate;
}
.hero-glow-1 {
  width: 640px; height: 640px;
  background: radial-gradient(circle, rgba(47, 107, 255, 0.5), transparent 65%);
  top: -180px; left: -140px;
}
.hero-glow-2 {
  width: 700px; height: 700px;
  background: radial-gradient(circle, rgba(124, 77, 255, 0.42), transparent 65%);
  bottom: -220px; right: -160px;
  animation-delay: -4s;
}
@keyframes float {
  from { transform: translateY(-26px); }
  to   { transform: translateY(26px); }
}
.hero-grid {
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image:
    linear-gradient(rgba(80, 120, 255, 0.09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(80, 120, 255, 0.09) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 78% 62% at 50% 42%, #000 28%, transparent 76%);
  -webkit-mask-image: radial-gradient(ellipse 78% 62% at 50% 42%, #000 28%, transparent 76%);
}

/* Hero HUD 环形装饰 */
.hero-hud {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  z-index: 0;
  pointer-events: none;
}
.hud-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px dashed rgba(47, 107, 255, 0.22);
}
.hud-ring-1 { width: 440px; height: 440px; animation: spin 44s linear infinite; }
.hud-ring-2 {
  width: 680px; height: 680px;
  border-style: solid;
  border-color: rgba(47, 107, 255, 0.12);
  animation: spin 66s linear infinite reverse;
}
.hud-ring-3 {
  width: 940px; height: 940px;
  border-color: rgba(124, 77, 255, 0.1);
  animation: spin 96s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.hud-scan {
  position: absolute;
  width: 100%; height: 140px;
  background: linear-gradient(180deg, transparent, rgba(24, 184, 232, 0.07), transparent);
  animation: scan 7s ease-in-out infinite;
}
@keyframes scan {
  0%, 100% { transform: translateY(-38vh); opacity: 0; }
  50% { transform: translateY(38vh); opacity: 1; }
}

/* Hero 四角框 */
.hero-frame {
  position: absolute;
  inset: calc(var(--nav-h) + 28px) 4.5% 104px;
  z-index: 1;
  pointer-events: none;
}
.hero-frame i {
  position: absolute;
  width: 30px; height: 30px;
  border: 2px solid rgba(47, 107, 255, 0.34);
}
.hero-frame i:nth-child(1) { top: 0; left: 0; border-right: 0; border-bottom: 0; border-top-left-radius: 8px; }
.hero-frame i:nth-child(2) { top: 0; right: 0; border-left: 0; border-bottom: 0; border-top-right-radius: 8px; }
.hero-frame i:nth-child(3) { bottom: 0; left: 0; border-right: 0; border-top: 0; border-bottom-left-radius: 8px; }
.hero-frame i:nth-child(4) { bottom: 0; right: 0; border-left: 0; border-top: 0; border-bottom-right-radius: 8px; }

.hero-content { z-index: 2; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 22px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(8px);
  font-size: 14px;
  color: #33549f;
  letter-spacing: 1.5px;
  margin-bottom: 30px;
  box-shadow: 0 6px 22px rgba(47, 107, 255, 0.12);
}
.hero-badge .dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 12px var(--cyan);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.75); }
}
.hero-title {
  font-size: clamp(42px, 7.6vw, 100px);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: 3px;
  margin-bottom: 26px;
  text-shadow: 0 14px 40px rgba(47, 107, 255, 0.12);
}
.gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-desc {
  max-width: 800px;
  margin: 0 auto 40px;
  color: var(--text-dim);
  font-size: clamp(16px, 1.6vw, 19px);
  letter-spacing: 0.5px;
}
.hero-actions {
  display: flex;
  gap: 18px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 0;
}
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 16px 38px;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 600;
  overflow: hidden;
  transition: transform 0.25s, box-shadow 0.25s, background 0.25s;
}
.btn-primary {
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 10px 34px var(--glow-blue);
}
.btn-primary::after {
  content: "";
  position: absolute;
  top: 0; left: -130%;
  width: 60%; height: 100%;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, 0.5), transparent);
  transform: skewX(-20deg);
  transition: left 0.65s ease;
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 16px 46px rgba(47, 107, 255, 0.42); }
.btn-primary:hover::after { left: 140%; }
.btn-ghost {
  border: 1px solid var(--border-strong);
  color: var(--text);
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover { background: rgba(47, 107, 255, 0.1); transform: translateY(-3px); box-shadow: 0 12px 30px rgba(47, 107, 255, 0.18); }

.scroll-hint {
  position: absolute;
  bottom: 30px; left: 50%;
  transform: translateX(-50%);
  width: 26px; height: 42px;
  border: 2px solid var(--border-strong);
  border-radius: 999px;
  z-index: 2;
}
.scroll-hint span {
  position: absolute;
  top: 8px; left: 50%;
  width: 4px; height: 9px;
  margin-left: -2px;
  background: var(--cyan);
  border-radius: 4px;
  animation: scrollDot 1.8s infinite;
}
@keyframes scrollDot {
  0% { opacity: 1; transform: translateY(0); }
  100% { opacity: 0; transform: translateY(14px); }
}

/* ---------- 能力滚动带 ---------- */
.ticker {
  position: relative;
  z-index: 2;
  overflow: hidden;
  padding: 18px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: linear-gradient(90deg, rgba(24, 184, 232, 0.07), rgba(47, 107, 255, 0.05), rgba(124, 77, 255, 0.07));
  backdrop-filter: blur(10px);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
}
.ticker-track {
  display: flex;
  align-items: center;
  gap: 52px;
  width: max-content;
  animation: tickerMove 34s linear infinite;
}
.ticker-track span {
  position: relative;
  padding-left: 22px;
  font-size: 16px;
  letter-spacing: 2px;
  color: #33549f;
  white-space: nowrap;
}
.ticker-track span::before {
  content: "";
  position: absolute;
  left: 0; top: 50%;
  width: 7px; height: 7px;
  margin-top: -3.5px;
  border-radius: 50%;
  background: var(--gradient);
  box-shadow: 0 0 10px var(--glow-blue);
}
@keyframes tickerMove {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ---------- 通用 Section ---------- */
.section {
  padding: 128px 0;
  position: relative;
  z-index: 1;
  scroll-margin-top: calc(var(--nav-h) + 16px); /* 锚点跳转时避开固定导航 */
}
.section-alt {
  position: relative;
  background: linear-gradient(180deg, transparent 0%, rgba(255, 255, 255, 0.86) 14%, rgba(255, 255, 255, 0.86) 86%, transparent 100%);
}
.section-alt::before,
.section-alt::after {
  content: "";
  position: absolute;
  left: 10%; right: 10%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(47, 107, 255, 0.35), transparent);
}
.section-alt::before { top: 0; }
.section-alt::after { bottom: 0; }
.section-head { text-align: center; margin-bottom: 72px; }
.section-tag {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 6px;
  color: var(--cyan);
  margin-bottom: 14px;
  text-transform: uppercase;
  font-weight: 600;
}
.section-title {
  font-size: clamp(34px, 5vw, 56px);
  font-weight: 800;
  letter-spacing: 2px;
  line-height: 1.2;
}
.section-title::after {
  content: "";
  display: block;
  width: 72px; height: 3px;
  margin: 24px auto 0;
  background: var(--gradient);
  border-radius: 3px;
  box-shadow: 0 0 18px var(--glow-blue);
}
.section-desc { color: var(--text-dim); margin-top: 18px; font-size: 17px; }

/* ---------- 卡片通用：渐变描边 + 悬浮光效 ---------- */
.about-card, .service-card, .adv-card {
  position: relative;
}
.about-card::after,
.service-card::after,
.adv-card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: var(--gradient-soft);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask-composite: exclude;
  opacity: 0.45;
  transition: opacity 0.35s;
  pointer-events: none;
}
.about-card:hover::after,
.service-card:hover::after,
.adv-card:hover::after { opacity: 1; }

/* ---------- 关于我们 ---------- */
.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.about-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 42px 34px;
  backdrop-filter: blur(10px);
  transition: transform 0.35s, border-color 0.35s, box-shadow 0.35s;
}
.about-card:hover {
  transform: translateY(-10px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-card-hover);
}
.card-icon {
  width: 62px; height: 62px;
  display: grid; place-items: center;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(24, 184, 232, 0.16), rgba(124, 77, 255, 0.16));
  border: 1px solid var(--border-strong);
  color: var(--blue);
  margin-bottom: 22px;
  box-shadow: 0 8px 22px rgba(47, 107, 255, 0.14);
}
.about-card h3 { font-size: 22px; margin-bottom: 12px; letter-spacing: 1px; }
.about-card p { color: var(--text-dim); font-size: 15.5px; }
.about-card strong { color: #2b4a94; }

.tag-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.tag-list li {
  padding: 8px 18px;
  font-size: 14px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: rgba(47, 107, 255, 0.08);
  color: #33549f;
}

/* ---------- 核心服务 ---------- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 38px 32px;
  overflow: hidden;
  backdrop-filter: blur(10px);
  transition: transform 0.35s, border-color 0.35s, box-shadow 0.35s;
}
.service-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--gradient);
  opacity: 0;
  transition: opacity 0.35s;
}
.service-card:hover {
  transform: translateY(-10px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-card-hover);
}
.service-card:hover::before { opacity: 1; }
.service-num {
  position: absolute;
  top: 20px; right: 26px;
  font-size: 46px;
  font-weight: 800;
  color: rgba(90, 130, 255, 0.16);
  line-height: 1;
  letter-spacing: -2px;
}
.service-card h3 { font-size: 22px; margin-bottom: 12px; letter-spacing: 1px; }
.service-card p { color: var(--text-dim); font-size: 15.5px; }

.service-banner {
  margin-top: 42px;
  text-align: center;
  padding: 30px 40px;
  border-radius: var(--radius);
  border: 1px solid var(--border-strong);
  background: linear-gradient(120deg, rgba(24, 184, 232, 0.1), rgba(124, 77, 255, 0.1));
  color: var(--text-dim);
  font-size: 18px;
  letter-spacing: 0.5px;
  position: relative;
  overflow: hidden;
}
.service-banner::before {
  content: "";
  position: absolute;
  top: 0; left: -130%;
  width: 60%; height: 100%;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, 0.6), transparent);
  transform: skewX(-20deg);
  animation: bannerShine 6s ease-in-out infinite;
}
@keyframes bannerShine {
  0%, 60% { left: -130%; }
  100% { left: 150%; }
}
.service-banner strong {
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-size: 19px;
}

/* ---------- 合作优势 ---------- */
.adv-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}
.adv-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 22px;
  text-align: center;
  backdrop-filter: blur(10px);
  transition: transform 0.35s, border-color 0.35s, box-shadow 0.35s;
}
.adv-card:hover {
  transform: translateY(-10px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-card-hover);
}
.adv-icon {
  width: 70px; height: 70px;
  margin: 0 auto 20px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(24, 184, 232, 0.16), rgba(124, 77, 255, 0.16));
  border: 1px solid var(--border-strong);
  color: var(--blue);
  box-shadow: 0 10px 26px rgba(47, 107, 255, 0.16);
}
.adv-card h3 { font-size: 18px; margin-bottom: 10px; letter-spacing: 1px; }
.adv-card p { font-size: 13.5px; color: var(--text-dim); }

/* ---------- 合作案例（科技风卡片墙） ---------- */
.cases {
  position: relative;
  background: linear-gradient(180deg, transparent 0%, rgba(255, 255, 255, 0.86) 14%, rgba(255, 255, 255, 0.86) 86%, transparent 100%);
}
.cases::before,
.cases::after {
  content: "";
  position: absolute;
  left: 10%; right: 10%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(47, 107, 255, 0.35), transparent);
}
.cases::before { top: 0; }
.cases::after { bottom: 0; }

.cases-head { text-align: left; margin-bottom: 48px; }
.cases-tag {
  display: block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 6px;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 14px;
}
.cases-head .section-title {
  font-size: clamp(28px, 3.6vw, 44px);
  letter-spacing: 2px;
}
.cases-head .section-title::after {
  margin: 18px 0 0;
  width: 96px;
  height: 4px;
  border-radius: 3px;
  background: var(--gradient);
  box-shadow: 0 0 18px var(--glow-blue);
}
.cases-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
}

.case-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 18px 24px;
  text-align: center;
  overflow: hidden;
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-card);
  transition: transform 0.35s, border-color 0.35s, box-shadow 0.35s;
}
/* 顶部渐变条纹（主题色系循环） */
.case-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: var(--stripe, var(--gradient));
}
.cases-grid .case-card:nth-child(5n + 1) { --stripe: linear-gradient(90deg, #18b8e8, #2f6bff); }
.cases-grid .case-card:nth-child(5n + 2) { --stripe: linear-gradient(90deg, #2f6bff, #7c4dff); }
.cases-grid .case-card:nth-child(5n + 3) { --stripe: linear-gradient(90deg, #0aa2d8, #18b8e8); }
.cases-grid .case-card:nth-child(5n + 4) { --stripe: linear-gradient(90deg, #7c4dff, #2f6bff); }
.cases-grid .case-card:nth-child(5n + 5) { --stripe: linear-gradient(90deg, #18b8e8, #7c4dff); }
/* 渐变描边（与全站卡片一致） */
.case-card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: var(--gradient-soft);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask-composite: exclude;
  opacity: 0.4;
  transition: opacity 0.35s;
  pointer-events: none;
}
.case-card:hover {
  transform: translateY(-10px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-card-hover);
}
.case-card:hover::after { opacity: 1; }
/* 企业图片位：5:4 比例，照片完整不裁招牌；无照片时自动显示首字水印 */
.case-photo {
  aspect-ratio: 5 / 4;
  margin-bottom: 18px;
  border-radius: 14px;
  overflow: hidden;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, rgba(24, 184, 232, 0.14), rgba(124, 77, 255, 0.18));
  border: 1px solid var(--border);
}
.case-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.6s ease;
}
.case-card:hover .case-photo img { transform: scale(1.05); }
.case-photo span {
  font-size: 44px;
  font-weight: 800;
  line-height: 1;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  opacity: 0.85;
}
.case-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.5;
  letter-spacing: 1px;
}
.cases-note {
  margin-top: 36px;
  text-align: center;
  color: var(--text-dim);
  font-size: 13px;
}

/* ---------- 联系我们（图标 + 文字清单） ---------- */
.contact-list {
  width: min(460px, 100%);
  margin: 0 auto;
  display: grid;
  gap: 34px;
}
/* 企业微信二维码 */
.contact-qr {
  margin-top: 46px;
  text-align: center;
}
.contact-qr img {
  width: 168px;
  height: 168px;
  display: block;
  margin: 0 auto;
  padding: 10px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: #fff;
  box-shadow: var(--shadow-card);
}
.contact-qr p {
  margin-top: 16px;
  font-size: 14px;
  letter-spacing: 1px;
  color: var(--text-dim);
}
.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 20px;
}
.contact-ico {
  flex: 0 0 26px;
  margin-top: 2px;
  color: var(--blue);
}
.contact-ico svg {
  width: 26px;
  height: 26px;
  display: block;
}
.contact-text {
  font-size: 16px;
  color: var(--text-dim);
  line-height: 1.6;
}
.contact-text strong {
  display: block;
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 2px;
  transition: color 0.25s;
}
a.contact-item { transition: transform 0.25s; }
a.contact-item:hover { transform: translateX(4px); }
a.contact-item:hover .contact-text strong { color: var(--blue); }

/* ---------- 页脚 ---------- */
.footer {
  border-top: 1px solid var(--border);
  padding: 46px 0 100px;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(10px);
  position: relative;
  z-index: 1;
}
.footer::before {
  content: "";
  position: absolute;
  top: -1px; left: 10%; right: 10%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(47, 107, 255, 0.5), transparent);
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 26px;
  flex-wrap: wrap;
}
.footer-brand { display: flex; align-items: center; gap: 20px; }
.footer-logo img { height: 82px; width: auto; display: block; transition: transform 0.3s; }
.footer-logo:hover img { transform: scale(1.03); }
.footer-brand p { color: var(--text-dim); font-size: 13px; }
.footer-contact {
  text-align: right;
  color: var(--text-dim);
  font-size: 13.5px;
  line-height: 1.95;
}
/* 备案信息（居中，参照行业通用样式） */
.footer-beian {
  margin-top: 26px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  text-align: center;
  color: var(--text-dim);
  font-size: 12.5px;
  line-height: 2;
}
.footer-beian a {
  color: var(--text-dim);
  transition: color 0.25s;
}
.footer-beian a:hover { color: var(--blue); }

/* ---------- 移动端拨号悬浮按钮 ---------- */
.fab-tel {
  display: none;
  position: fixed;
  right: 20px; bottom: 20px;
  width: 58px; height: 58px;
  border-radius: 50%;
  background: var(--gradient);
  color: #fff;
  place-items: center;
  box-shadow: 0 10px 30px var(--glow-blue);
  z-index: 90;
  animation: pulse 2.4s infinite;
}

/* ---------- 滚动渐入 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1), transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1180px) {
  .cases-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 1024px) {
  .adv-grid { grid-template-columns: repeat(3, 1fr); }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .cases-grid { grid-template-columns: repeat(2, 1fr); }
  .hud-ring-3 { display: none; }
}

@media (max-width: 768px) {
  .section { padding: 80px 0; }

  /* 移动端菜单 */
  .hamburger { display: flex; }
  .nav-links {
    position: fixed;
    top: 0; right: 0;
    width: min(78vw, 320px);
    height: 100vh;
    flex-direction: column;
    justify-content: center;
    gap: 28px;
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(20px);
    border-left: 1px solid var(--border);
    transform: translateX(100%);
    transition: transform 0.35s ease;
    z-index: 110;
  }
  .nav-links.open { transform: translateX(0); }
  .nav-links a { font-size: 18px; }
  .nav-cta { padding: 12px 34px; }

  .hero { min-height: 100svh; padding-bottom: 76px; }
  .hero-frame { display: none; }
  .hud-ring-1, .hud-ring-2 { display: none; }
  .scroll-hint { display: none; }

  .ticker-track { gap: 34px; }
  .ticker-track span { font-size: 14px; }

  .about-grid { grid-template-columns: 1fr; }
  .services-grid { grid-template-columns: 1fr; }
  .adv-grid { grid-template-columns: repeat(2, 1fr); }

  .cases-grid { grid-template-columns: repeat(2, 1fr); }
  .cases-head { margin-bottom: 34px; }

  .contact-list { gap: 28px; }

  .footer { padding-bottom: 110px; }
  .footer-inner { flex-direction: column; text-align: center; }
  .footer-brand { flex-direction: column; }
  .footer-contact { text-align: center; }
  .fab-tel { display: grid; }
}

@media (max-width: 420px) {
  .adv-grid { grid-template-columns: 1fr; }
  .cases-grid { grid-template-columns: 1fr; }
  .hero-actions .btn { width: 100%; justify-content: center; }
}

/* 降低动效偏好 */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero-glow, .hero-badge .dot, .scroll-hint span, .fab-tel,
  .hud-ring, .hud-scan, .ticker-track, .service-banner::before { animation: none; }
  .reveal { opacity: 1; transform: none; transition: none; }
}