/* =========================================================
   南京卓睿科技有限公司 - 官网样式
   ========================================================= */
:root {
  --navy-900: #081a3a;
  --navy-800: #0a224e;
  --navy-700: #103068;
  --blue-700: #1d4ed8;
  --blue-600: #2563eb;
  --blue-500: #3b82f6;
  --blue-100: #dbeafe;
  --blue-50: #eff5ff;
  --gold-500: #d9a62e;
  --gold-400: #e8bc55;
  --ink-900: #101828;
  --ink-700: #344054;
  --ink-500: #667085;
  --line: #e4e9f2;
  --bg-soft: #f5f8fd;
  --white: #ffffff;
  --radius-lg: 18px;
  --radius-md: 12px;
  --shadow-sm: 0 1px 3px rgba(16, 24, 40, 0.08);
  --shadow-md: 0 10px 30px -8px rgba(13, 47, 115, 0.18);
  --shadow-lg: 0 24px 60px -18px rgba(13, 47, 115, 0.28);
  --font:
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC",
    "Noto Sans SC", system-ui, -apple-system, "Segoe UI", Arial, sans-serif;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
body {
  font-family: var(--font);
  color: var(--ink-900);
  background: var(--white);
  line-height: 1.75;
  font-size: 16px;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
}
ul,
ol {
  list-style: none;
}
button {
  font-family: inherit;
}

.container {
  width: min(1200px, 92%);
  margin: 0 auto;
}
.section {
  padding: 88px 0;
}
.section-soft {
  background: var(--bg-soft);
}
.section-head {
  text-align: center;
  max-width: 780px;
  margin: 0 auto 52px;
}
.section-head .kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--blue-600);
  font-weight: 600;
  letter-spacing: 3px;
  font-size: 14px;
  margin-bottom: 14px;
}
.section-head .kicker::before,
.section-head .kicker::after {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--gold-500);
  border-radius: 2px;
}
.section-head h2 {
  font-size: clamp(26px, 3.4vw, 38px);
  line-height: 1.3;
  color: var(--navy-800);
}
.section-head p {
  margin-top: 14px;
  color: var(--ink-500);
  font-size: 17px;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 999px;
  border: 0;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  transition: 0.25s;
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, var(--blue-600), var(--blue-700));
  color: #fff;
  box-shadow: 0 10px 24px -8px rgba(37, 99, 235, 0.55);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 30px -8px rgba(37, 99, 235, 0.65);
}
.btn-ghost {
  border: 1.5px solid rgba(255, 255, 255, 0.55);
  color: #fff;
  background: transparent;
}
.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #fff;
}
.btn-outline {
  border: 1.5px solid var(--blue-600);
  color: var(--blue-600);
  background: #fff;
}
.btn-outline:hover {
  background: var(--blue-600);
  color: #fff;
}

/* ---------- 顶部导航 ---------- */
.topbar {
  background: var(--navy-900);
  color: rgba(255, 255, 255, 0.75);
  font-size: 13px;
  padding: 7px 0;
}
.topbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}
.topbar a:hover {
  color: #fff;
}
.topbar .tb-links {
  display: flex;
  gap: 18px;
}
.topbar .tb-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.nav-wrap {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10, 34, 78, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  transition: box-shadow 0.3s;
}
.nav-wrap.scrolled {
  box-shadow: 0 10px 30px rgba(4, 14, 36, 0.35);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
  gap: 20px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #fff;
}
.brand-logo {
  display: block;
  height: 32px;
  width: auto;
  box-sizing: content-box;
  background: #fff;
  border-radius: 10px;
  padding: 5px;
  flex: 0 0 auto;
}
.brand-mark {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  flex: 0 0 auto;
  background: linear-gradient(145deg, #1e4fd6, #0a2a66);
  display: grid;
  place-items: center;
  position: relative;
  overflow: hidden;
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.18),
    0 6px 16px -6px rgba(0, 0, 0, 0.5);
}
.brand-mark::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    120% 90% at 20% 15%,
    rgba(255, 255, 255, 0.28),
    transparent 55%
  );
}
.brand-mark svg {
  width: 26px;
  height: 26px;
  position: relative;
  z-index: 1;
}
.brand-text {
  line-height: 1.25;
}
.brand-text b {
  font-size: 19px;
  letter-spacing: 1px;
  display: block;
}
.brand-text span {
  font-size: 11.5px;
  color: var(--gold-400);
  letter-spacing: 2.5px;
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-menu > li {
  position: relative;
}
.nav-menu > li > a {
  display: block;
  color: rgba(255, 255, 255, 0.88);
  font-size: 15.5px;
  font-weight: 500;
  padding: 10px 15px;
  border-radius: 8px;
  transition: 0.2s;
}
.nav-menu > li > a:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.09);
}
.nav-menu > li > a.active {
  color: #fff;
}
.nav-menu > li > a.active::after {
  content: "";
  position: absolute;
  left: 15px;
  right: 15px;
  bottom: 2px;
  height: 2.5px;
  border-radius: 2px;
  background: var(--gold-500);
}
.nav-cta {
  display: flex;
  align-items: center;
  gap: 14px;
}
.nav-phone {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #fff;
  font-weight: 700;
  font-size: 17px;
  letter-spacing: 0.5px;
}
.nav-phone svg {
  width: 18px;
  height: 18px;
}
.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.35);
  color: #fff;
  border-radius: 8px;
  padding: 8px 10px;
  cursor: pointer;
}
.nav-toggle svg {
  width: 22px;
  height: 22px;
  display: block;
}

/* 下拉菜单 */
.dropdown-panel {
  position: absolute;
  top: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  background: #fff;
  border-radius: 14px;
  box-shadow: var(--shadow-lg);
  padding: 10px;
  min-width: 300px;
  opacity: 0;
  visibility: hidden;
  transition: 0.22s;
}
.nav-menu > li:hover .dropdown-panel,
.nav-menu > li:focus-within .dropdown-panel {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.dropdown-panel a {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 11px 14px;
  border-radius: 10px;
  transition: 0.18s;
}
.dropdown-panel a:hover {
  background: var(--blue-50);
}
.dropdown-panel .dp-t {
  font-weight: 600;
  color: var(--ink-900);
  font-size: 15px;
}
.dropdown-panel .dp-d {
  font-size: 12.5px;
  color: var(--ink-500);
  line-height: 1.5;
  margin-top: 2px;
}
.dropdown-panel .dp-ico {
  width: 36px;
  height: 36px;
  flex: 0 0 auto;
  border-radius: 9px;
  background: var(--blue-50);
  display: grid;
  place-items: center;
  color: var(--blue-600);
  font-size: 17px;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  color: #fff;
  background:
    radial-gradient(
      900px 480px at 85% -10%,
      rgba(59, 130, 246, 0.35),
      transparent 60%
    ),
    radial-gradient(
      700px 420px at -10% 110%,
      rgba(217, 166, 46, 0.18),
      transparent 55%
    ),
    linear-gradient(
      160deg,
      var(--navy-900) 10%,
      var(--navy-700) 55%,
      #123a86 100%
    );
  padding: 96px 0 110px;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.5;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(75% 70% at 50% 30%, #000 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(
    75% 70% at 50% 30%,
    #000 30%,
    transparent 100%
  );
}
.hero .container {
  position: relative;
  z-index: 1;
}
.hero-inner {
  display: grid;
  grid-template-columns: 0.92fr 1.08fr;
  gap: 48px;
  align-items: center;
}
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  letter-spacing: 1px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 7px 16px;
  border-radius: 999px;
  color: #dce7ff;
  margin-bottom: 22px;
}
.hero-tag .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gold-400);
  box-shadow: 0 0 0 4px rgba(232, 188, 85, 0.22);
}
.hero h1 {
  font-size: clamp(30px, 4.6vw, 52px);
  line-height: 1.22;
  letter-spacing: 1px;
}
.hero h1 .grad {
  background: linear-gradient(
    92deg,
    #7fb0ff 5%,
    #cfe1ff 45%,
    var(--gold-400) 100%
  );
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero p.lead {
  margin-top: 20px;
  font-size: 17.5px;
  color: #c3d2ee;
  max-width: 560px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}
.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin-top: 34px;
  color: #a9bce0;
  font-size: 14.5px;
}
.hero-points span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.hero-points svg {
  width: 17px;
  height: 17px;
  color: var(--gold-400);
  flex: 0 0 auto;
}
.hero-visual {
  position: relative;
  margin-right: -3%;
}
.hero-visual .hv-main {
  border-radius: var(--radius-lg);
  box-shadow: 0 40px 90px -20px rgba(2, 8, 26, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.16);
  overflow: hidden;
}
.hero-visual .hv-main img {
  width: 100%;
  height: auto;
}
.hero-cards {
  position: absolute;
  left: -26px;
  bottom: -30px;
  display: flex;
  gap: 12px;
}
.hv-card {
  background: rgba(255, 255, 255, 0.96);
  color: var(--ink-900);
  border-radius: 14px;
  padding: 14px 18px;
  box-shadow: var(--shadow-lg);
  min-width: 130px;
}
.hv-card b {
  display: block;
  font-size: 22px;
  color: var(--blue-700);
  line-height: 1.2;
}
.hv-card span {
  font-size: 12.5px;
  color: var(--ink-500);
}

/* 数据统计条 */
.stats-band {
  position: relative;
  z-index: 5;
  margin-top: -64px;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  border: 1px solid var(--line);
}
.stat {
  padding: 30px 20px;
  text-align: center;
  position: relative;
}
.stat + .stat::before {
  content: "";
  position: absolute;
  left: 0;
  top: 22%;
  bottom: 22%;
  width: 1px;
  background: var(--line);
}
.stat .num {
  font-size: clamp(30px, 3.6vw, 44px);
  font-weight: 800;
  color: var(--navy-800);
  line-height: 1.1;
}
.stat .num em {
  font-style: normal;
  color: var(--blue-600);
}
.stat .label {
  color: var(--ink-500);
  margin-top: 8px;
  font-size: 14.5px;
}

/* ---------- 服务卡片 ---------- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.services-grid.cols-2 {
  grid-template-columns: repeat(2, 1fr);
}
.svc-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 34px 30px 30px;
  position: relative;
  overflow: hidden;
  transition:
    transform 0.28s,
    box-shadow 0.28s,
    border-color 0.28s;
  display: flex;
  flex-direction: column;
}
.svc-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--blue-600), var(--gold-500));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s;
}
.svc-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.svc-card:hover::before {
  transform: scaleX(1);
}
.svc-ico {
  width: 62px;
  height: 62px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  background: linear-gradient(145deg, var(--blue-50), #fff);
  border: 1px solid var(--blue-100);
  color: var(--blue-600);
  margin-bottom: 22px;
}
.svc-ico svg {
  width: 30px;
  height: 30px;
}
.svc-card h3 {
  font-size: 20px;
  color: var(--navy-800);
  margin-bottom: 12px;
}
.svc-card h3 a:hover {
  color: var(--blue-600);
}
.svc-card p {
  color: var(--ink-500);
  font-size: 15px;
  flex: 1;
}
.svc-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}
.svc-tags i {
  font-style: normal;
  font-size: 12.5px;
  color: var(--blue-700);
  background: var(--blue-50);
  border: 1px solid var(--blue-100);
  border-radius: 999px;
  padding: 3px 12px;
}
.svc-more {
  margin-top: 20px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--blue-600);
  font-weight: 600;
  font-size: 14.5px;
}
.svc-more:hover {
  gap: 10px;
}
.svc-more::after {
  content: "→";
  transition: 0.2s;
}

/* 服务横幅卡（图+文） */
.svc-banner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--line);
  transition:
    box-shadow 0.3s,
    transform 0.3s;
}
.svc-banner:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
}
.svc-banner .sb-img {
  position: relative;
  min-height: 280px;
}
.svc-banner .sb-img img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.svc-banner .sb-body {
  padding: 40px 42px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.svc-banner h3 {
  font-size: 23px;
  color: var(--navy-800);
  margin-bottom: 14px;
}
.svc-banner h3 a:hover {
  color: var(--blue-600);
}
.svc-banner p {
  color: var(--ink-500);
  font-size: 15px;
}
.svc-banner .svc-tags {
  margin: 18px 0 22px;
}

/* ---------- 优势 ---------- */
.adv-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.adv-item {
  background: linear-gradient(180deg, #fff, var(--blue-50));
  border: 1px solid var(--blue-100);
  border-radius: var(--radius-lg);
  padding: 32px 26px;
  transition: 0.28s;
}
.adv-item:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}
.adv-item .no {
  font-size: 15px;
  font-weight: 800;
  color: var(--gold-500);
  letter-spacing: 2px;
}
.adv-item h3 {
  font-size: 18.5px;
  color: var(--navy-800);
  margin: 10px 0 10px;
}
.adv-item p {
  font-size: 14.5px;
  color: var(--ink-500);
}

/* ---------- 服务流程 ---------- */
.flow-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
  counter-reset: flow;
}
.flow-step {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 26px 18px 22px;
  text-align: center;
  position: relative;
  transition: 0.25s;
}
.flow-step:hover {
  border-color: var(--blue-500);
  box-shadow: var(--shadow-md);
  transform: translateY(-5px);
}
.flow-step::before {
  counter-increment: flow;
  content: "0" counter(flow);
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: linear-gradient(145deg, var(--blue-600), var(--navy-700));
  color: #fff;
  font-weight: 700;
  font-size: 15px;
  margin-bottom: 14px;
}
.flow-step h4 {
  font-size: 16.5px;
  color: var(--navy-800);
}
.flow-step p {
  font-size: 13px;
  color: var(--ink-500);
  margin-top: 6px;
  line-height: 1.6;
}
.flow-step::after {
  content: "→";
  position: absolute;
  right: -14px;
  top: 44px;
  color: #b9c8e6;
  font-size: 16px;
  z-index: 1;
}
.flow-step:last-child::after {
  display: none;
}

/* ---------- 案例 ---------- */
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.case-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  transition: 0.3s;
  display: flex;
  flex-direction: column;
}
.case-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}
.case-thumb {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/10;
  background: var(--blue-50);
}
.case-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  transition: transform 0.5s;
}
.case-card:hover .case-thumb img {
  transform: scale(1.05);
}
.case-badge {
  position: absolute;
  left: 14px;
  top: 14px;
  background: rgba(10, 34, 78, 0.82);
  color: #fff;
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 999px;
  backdrop-filter: blur(4px);
}
.case-body {
  padding: 22px 24px 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.case-body h3 {
  font-size: 17.5px;
  color: var(--navy-800);
  margin-bottom: 8px;
}
.case-body p {
  font-size: 14px;
  color: var(--ink-500);
  flex: 1;
}
.case-body .case-scope {
  margin-top: 14px;
  font-size: 12.5px;
  color: var(--blue-700);
}
.case-body .case-scope::before {
  content: "◉ ";
  color: var(--gold-500);
}

/* ---------- 客户 ---------- */
.clients-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
}
.client-chip {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 20px 10px;
  font-weight: 600;
  color: var(--ink-700);
  font-size: 14.5px;
  transition: 0.25s;
  text-align: center;
}
.client-chip:hover {
  border-color: var(--blue-500);
  color: var(--blue-700);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.client-chip svg {
  width: 18px;
  height: 18px;
  color: var(--gold-500);
  flex: 0 0 auto;
}

/* ---------- CTA ---------- */
.cta-band {
  position: relative;
  overflow: hidden;
}
.cta-box {
  position: relative;
  overflow: hidden;
  border-radius: 24px;
  color: #fff;
  text-align: center;
  padding: 64px 30px;
  background:
    radial-gradient(
      700px 300px at 15% 0%,
      rgba(59, 130, 246, 0.4),
      transparent 55%
    ),
    radial-gradient(
      600px 300px at 90% 100%,
      rgba(217, 166, 46, 0.25),
      transparent 55%
    ),
    linear-gradient(150deg, var(--navy-900), var(--navy-700));
  box-shadow: var(--shadow-lg);
}
.cta-box h2 {
  font-size: clamp(24px, 3.2vw, 36px);
}
.cta-box p {
  color: #c3d2ee;
  margin-top: 14px;
  font-size: 16.5px;
}
.cta-actions {
  margin-top: 32px;
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}
.cta-phone {
  margin-top: 26px;
  font-size: 26px;
  font-weight: 800;
  letter-spacing: 1px;
  color: var(--gold-400);
}
.cta-phone small {
  display: block;
  font-size: 13px;
  color: #93a9d4;
  font-weight: 400;
  letter-spacing: 2px;
  margin-bottom: 2px;
}

/* ---------- FAQ ---------- */
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: grid;
  gap: 14px;
}
.faq-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.faq-item summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  font-weight: 600;
  color: var(--navy-800);
  font-size: 16.5px;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary::after {
  content: "+";
  font-size: 22px;
  color: var(--blue-600);
  transition: 0.25s;
  flex: 0 0 auto;
  font-weight: 400;
}
.faq-item[open] summary::after {
  transform: rotate(45deg);
}
.faq-item .faq-a {
  padding: 0 24px 22px;
  color: var(--ink-500);
  font-size: 15px;
}

/* ---------- 页面 Hero（内页） ---------- */
.page-hero {
  position: relative;
  overflow: hidden;
  color: #fff;
  padding: 72px 0 66px;
  background:
    radial-gradient(
      800px 380px at 90% -20%,
      rgba(59, 130, 246, 0.38),
      transparent 60%
    ),
    radial-gradient(
      600px 300px at 0% 120%,
      rgba(217, 166, 46, 0.16),
      transparent 55%
    ),
    linear-gradient(
      160deg,
      var(--navy-900) 15%,
      var(--navy-700) 60%,
      #123a86 100%
    );
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.4;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(70% 80% at 50% 40%, #000 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(
    70% 80% at 50% 40%,
    #000 30%,
    transparent 100%
  );
}
.page-hero .container {
  position: relative;
  z-index: 1;
}
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13.5px;
  color: #9db1d8;
  margin-bottom: 18px;
}
.breadcrumb a:hover {
  color: #fff;
}
.breadcrumb .sep {
  color: #5f76a6;
}
.page-hero h1 {
  font-size: clamp(26px, 3.8vw, 42px);
  line-height: 1.25;
}
.page-hero .ph-sub {
  margin-top: 14px;
  color: #c3d2ee;
  font-size: 16.5px;
  max-width: 720px;
}
.page-hero .ph-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}
.page-hero .ph-tags i {
  font-style: normal;
  font-size: 13.5px;
  color: #dce7ff;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.18);
  padding: 5px 14px;
  border-radius: 999px;
}
.page-hero-center {
  text-align: center;
}
.page-hero-center .ph-sub {
  margin-left: auto;
  margin-right: auto;
}
.page-hero-center .ph-tags {
  justify-content: center;
}
.page-hero-center .breadcrumb {
  justify-content: center;
}

/* ---------- 图文板块 ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.split.alt .sp-img {
  order: 2;
}
.split .sp-img {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  position: relative;
}
.split .sp-img img {
  width: 100%;
  aspect-ratio: 4/2.9;
  object-fit: cover;
}
.split .sp-body h2 {
  font-size: clamp(24px, 3vw, 34px);
  color: var(--navy-800);
  line-height: 1.3;
}
.split .sp-body > p {
  margin-top: 16px;
  color: var(--ink-500);
}
.check-list {
  margin-top: 24px;
  display: grid;
  gap: 13px;
}
.check-list li {
  display: flex;
  gap: 11px;
  align-items: flex-start;
  color: var(--ink-700);
  font-size: 15.5px;
}
.check-list li b {
  color: var(--navy-800);
}
.check-list svg {
  width: 21px;
  height: 21px;
  color: var(--blue-600);
  flex: 0 0 auto;
  margin-top: 3px;
}

/* 功能点阵 */
.feat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 46px;
}
.feat-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 26px 24px;
  transition: 0.25s;
}
.feat-item:hover {
  border-color: var(--blue-500);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.feat-item h3 {
  font-size: 17px;
  color: var(--navy-800);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.feat-item h3 .fi-dot {
  width: 9px;
  height: 9px;
  border-radius: 3px;
  background: linear-gradient(135deg, var(--blue-600), var(--gold-500));
  flex: 0 0 auto;
}
.feat-item p {
  font-size: 14px;
  color: var(--ink-500);
}

/* 场景行业 */
.scene-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.scene-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  min-height: 190px;
  display: flex;
  align-items: flex-end;
  padding: 22px;
  color: #fff;
  isolation: isolate;
}
.scene-card::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(
    180deg,
    rgba(8, 26, 58, 0.15) 30%,
    rgba(8, 26, 58, 0.85) 100%
  );
}
.scene-card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -2;
  transition: transform 0.5s;
}
.scene-card:hover img {
  transform: scale(1.07);
}
.scene-card h3 {
  font-size: 18px;
}
.scene-card p {
  font-size: 13px;
  color: #d5def0;
  margin-top: 4px;
}

/* 步骤条（纵向） */
.vflow {
  max-width: 860px;
  margin: 0 auto;
  position: relative;
}
.vflow::before {
  content: "";
  position: absolute;
  left: 23px;
  top: 12px;
  bottom: 12px;
  width: 2px;
  background: linear-gradient(180deg, var(--blue-600), var(--blue-100));
}
.vflow-item {
  position: relative;
  padding: 0 0 34px 72px;
}
.vflow-item:last-child {
  padding-bottom: 0;
}
.vflow-item::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 4px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: #fff;
  border: 6px solid var(--blue-600);
  box-shadow: 0 0 0 4px var(--blue-50);
}
.vflow-item h3 {
  font-size: 18px;
  color: var(--navy-800);
}
.vflow-item .vf-meta {
  font-size: 13px;
  color: var(--gold-500);
  font-weight: 600;
  margin: 2px 0 8px;
}
.vflow-item p {
  color: var(--ink-500);
  font-size: 15px;
}

/* 报价/套餐 */
.price-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: stretch;
}
.price-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 34px 30px;
  display: flex;
  flex-direction: column;
  transition: 0.28s;
  position: relative;
}
.price-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.price-card.hot {
  border: 2px solid var(--blue-600);
  box-shadow: var(--shadow-md);
}
.price-card .hot-tag {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--blue-600), var(--blue-700));
  color: #fff;
  font-size: 12.5px;
  padding: 4px 16px;
  border-radius: 999px;
  letter-spacing: 1px;
}
.price-card h3 {
  font-size: 19px;
  color: var(--navy-800);
}
.price-card .price-note {
  color: var(--gold-500);
  font-size: 13.5px;
  font-weight: 600;
  margin: 4px 0 14px;
}
.price-card ul {
  display: grid;
  gap: 11px;
  margin: 16px 0 24px;
  flex: 1;
}
.price-card li {
  display: flex;
  gap: 9px;
  font-size: 14.5px;
  color: var(--ink-700);
}
.price-card li svg {
  width: 18px;
  height: 18px;
  color: #16a34a;
  flex: 0 0 auto;
  margin-top: 3px;
}
.price-card .btn {
  width: 100%;
}

/* ---------- 联系板块 ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 40px;
}
.contact-panel {
  background: linear-gradient(160deg, var(--navy-900), var(--navy-700));
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 44px 42px;
  position: relative;
  overflow: hidden;
}
.contact-panel::after {
  content: "";
  position: absolute;
  right: -60px;
  bottom: -60px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  border: 26px solid rgba(59, 130, 246, 0.18);
}
.contact-panel h3 {
  font-size: 24px;
  margin-bottom: 8px;
}
.contact-panel .cp-sub {
  color: #b7c7e8;
  font-size: 15px;
}
.cp-list {
  margin-top: 28px;
  display: grid;
  gap: 20px;
  position: relative;
  z-index: 1;
}
.cp-item {
  display: flex;
  gap: 15px;
  align-items: flex-start;
}
.cp-item .cp-ico {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.16);
  display: grid;
  place-items: center;
  flex: 0 0 auto;
}
.cp-item .cp-ico svg {
  width: 20px;
  height: 20px;
  color: var(--gold-400);
}
.cp-item b {
  display: block;
  font-size: 16px;
}
.cp-item span {
  color: #b7c7e8;
  font-size: 14.5px;
}
.cp-item a:hover {
  color: var(--gold-400);
}
.qr-wrap {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 40px;
  text-align: center;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 18px;
  box-shadow: var(--shadow-md);
}
.qr-wrap img {
  width: 240px;
  border-radius: 14px;
  box-shadow: var(--shadow-sm);
}
.qr-wrap b {
  font-size: 18px;
  color: var(--navy-800);
}
.qr-wrap p {
  color: var(--ink-500);
  font-size: 14.5px;
}

/* ---------- 页脚 ---------- */
.footer {
  background: var(--navy-900);
  color: #9fb0d0;
  margin-top: 0;
}
.footer-top {
  padding: 64px 0 44px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.1fr;
  gap: 36px;
}
.footer h4 {
  color: #fff;
  font-size: 16.5px;
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 12px;
}
.footer h4::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 28px;
  height: 2.5px;
  background: var(--gold-500);
  border-radius: 2px;
}
.footer p,
.footer li {
  font-size: 14px;
  line-height: 1.9;
}
.footer ul li {
  margin-bottom: 9px;
}
.footer ul a:hover {
  color: #fff;
}
.footer .f-about {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  margin-bottom: 18px;
}
.footer .f-desc {
  margin-top: 4px;
}
.footer-contact li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
}
.footer-contact svg {
  width: 16px;
  height: 16px;
  margin-top: 5px;
  color: var(--gold-400);
  flex: 0 0 auto;
}
.footer a {
  transition: 0.2s;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.09);
  padding: 20px 0;
}
.footer-bottom .container {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 13px;
}
.footer-bottom a:hover {
  color: #fff;
}
.footer-keywords {
  font-size: 12.5px;
  color: #5f7398;
  line-height: 2;
}
.footer-keywords a {
  color: #7487ab;
  margin-right: 4px;
}
.footer-keywords a:hover {
  color: #c8d6f2;
}

/* 返回顶部 */
.back-top {
  position: fixed;
  right: 26px;
  bottom: 30px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: linear-gradient(145deg, var(--blue-600), var(--navy-700));
  color: #fff;
  display: grid;
  place-items: center;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px);
  transition: 0.3s;
  z-index: 900;
  border: 0;
  cursor: pointer;
}
.back-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.back-top:hover {
  transform: translateY(-4px);
}
.back-top svg {
  width: 20px;
  height: 20px;
}

/* 底部固定咨询条（移动端） */
.mobile-cta {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 950;
  display: none;
  background: rgba(10, 34, 78, 0.97);
  backdrop-filter: blur(8px);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: 10px 14px;
  gap: 10px;
  align-items: center;
}
.mobile-cta .mc-item {
  flex: 1;
  text-align: center;
  color: #fff;
  font-size: 13.5px;
  font-weight: 600;
  padding: 10px 6px;
  border-radius: 10px;
}
.mobile-cta .mc-item svg {
  width: 17px;
  height: 17px;
  display: block;
  margin: 0 auto 3px;
}
.mobile-cta .mc-tel {
  background: linear-gradient(135deg, var(--blue-600), var(--blue-700));
}
.mobile-cta .mc-wx {
  background: rgba(255, 255, 255, 0.12);
}

/* ---------- 滚动动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 0.7s ease,
    transform 0.7s ease;
}
.reveal.in {
  opacity: 1;
  transform: none;
}
.reveal.d1 {
  transition-delay: 0.08s;
}
.reveal.d2 {
  transition-delay: 0.16s;
}
.reveal.d3 {
  transition-delay: 0.24s;
}
.reveal.d4 {
  transition-delay: 0.32s;
}
.reveal.d5 {
  transition-delay: 0.4s;
}
.reveal.d6 {
  transition-delay: 0.48s;
}
@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  html {
    scroll-behavior: auto;
  }
}

/* ---------- 面包屑（内页顶部之下） ---------- */
.crumbs {
  font-size: 13.5px;
  color: var(--ink-500);
  padding: 18px 0 0;
}
.crumbs a:hover {
  color: var(--blue-600);
}
.crumbs .sep {
  margin: 0 6px;
  color: #b6c2d9;
}

/* ---------- 文章型内容 ---------- */
.prose {
  max-width: 860px;
  margin: 0 auto;
  color: var(--ink-700);
}
.prose h2 {
  font-size: 24px;
  color: var(--navy-800);
  margin: 38px 0 14px;
}
.prose h3 {
  font-size: 19px;
  color: var(--navy-800);
  margin: 28px 0 12px;
}
.prose p {
  margin-bottom: 14px;
  font-size: 15.5px;
}
.prose ul {
  list-style: disc;
  padding-left: 22px;
  margin-bottom: 14px;
}
.prose ul li {
  margin-bottom: 6px;
}

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero-visual {
    margin-right: 0;
  }
  .hero-visual {
    max-width: 640px;
  }
  .hero-cards {
    left: 10px;
  }
  .adv-grid,
  .scene-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .flow-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .flow-step::after {
    display: none;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 900px) {
  .section {
    padding: 64px 0;
  }
  .services-grid,
  .case-grid,
  .feat-grid,
  .price-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .svc-banner {
    grid-template-columns: 1fr;
  }
  .svc-banner .sb-img {
    min-height: 240px;
  }
  .split,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .split .sp-img,
  .split.alt .sp-img {
    order: -1;
  }
  .clients-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stat:nth-child(3)::before {
    display: none;
  }
  .nav-menu {
    position: fixed;
    inset: 74px 0 auto 0;
    background: var(--navy-800);
    flex-direction: column;
    align-items: stretch;
    padding: 14px 5% 24px;
    gap: 2px;
    box-shadow: 0 30px 50px rgba(2, 8, 26, 0.5);
    display: none;
    max-height: calc(100vh - 74px);
    overflow-y: auto;
  }
  .nav-menu.open {
    display: flex;
  }
  .nav-menu > li > a {
    padding: 13px 10px;
    font-size: 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 0;
  }
  .nav-menu > li > a.active::after {
    display: none;
  }
  .nav-menu > li > a.active {
    color: var(--gold-400);
  }
  .dropdown-panel {
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    box-shadow: none;
    background: rgba(255, 255, 255, 0.04);
    min-width: 0;
    padding: 4px 0 8px;
    display: none;
  }
  .nav-menu > li:hover .dropdown-panel {
    display: block;
  }
  .nav-menu li.has-drop.open-drop .dropdown-panel {
    display: block;
  }
  .dropdown-panel a {
    color: #dce7ff;
  }
  .dropdown-panel .dp-t {
    color: #fff;
  }
  .dropdown-panel .dp-ico {
    background: rgba(255, 255, 255, 0.08);
  }
  .nav-toggle {
    display: block;
  }
  .nav-cta {
    display: none;
  }
  .has-drop > a::after {
    content: " ▾";
    font-size: 12px;
    color: #9db1d8;
  }
  .mobile-cta {
    display: flex;
  }
  body {
    padding-bottom: 62px;
  }
}
@media (max-width: 600px) {
  .hero {
    padding: 68px 0 90px;
  }
  .hero-cards {
    position: static;
    margin-top: 16px;
  }
  .services-grid,
  .case-grid,
  .feat-grid,
  .price-grid,
  .adv-grid,
  .scene-grid,
  .flow-grid,
  .clients-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stat .num {
    font-size: 30px;
  }
  .topbar .tb-links {
    display: none;
  }
  .topbar .container {
    justify-content: center;
  }
  .svc-banner .sb-body {
    padding: 28px 24px;
  }
  .cta-actions .btn {
    width: 100%;
  }
  .footer-bottom .container {
    justify-content: center;
    text-align: center;
  }
  .contact-panel {
    padding: 32px 24px;
  }
  .page-hero {
    padding: 52px 0 48px;
  }
  .mobile-cta .mc-label {
    display: none;
  }
}