/* =========================================
   闫宝龙西安SEM营销 - 样式
   设计原则：简约大气 / 科技蓝主色 / 高速加载
   ========================================= */

/* ---------- Reset ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
body {
  margin: 0;
  font-family:
    -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei",
    "Helvetica Neue", "Segoe UI", Roboto, Arial, sans-serif;
  color: var(--ink);
  background: #ffffff;
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
img,
svg {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
  transition:
    color 0.2s ease,
    background 0.2s ease,
    border-color 0.2s ease;
}
a:hover {
  color: var(--brand);
}
ul,
ol {
  padding: 0;
  margin: 0;
  list-style: none;
}
button {
  font-family: inherit;
  cursor: pointer;
  border: 0;
  background: transparent;
}

/* ---------- Tokens ---------- */
:root {
  --brand: #0b5cff;
  --brand-2: #2a86ff;
  --brand-soft: #eaf1ff;
  --accent: #ff6a00;
  --ink: #0f172a;
  --ink-2: #1e293b;
  --muted: #64748b;
  --line: #e5e8ef;
  --bg-soft: #f7f8fb;
  --bg-card: #ffffff;
  --shadow-sm:
    0 1px 2px rgba(15, 23, 42, 0.04), 0 1px 4px rgba(15, 23, 42, 0.04);
  --shadow-md:
    0 6px 24px rgba(15, 23, 42, 0.06), 0 2px 8px rgba(15, 23, 42, 0.04);
  --shadow-lg:
    0 18px 40px rgba(15, 23, 42, 0.1), 0 6px 16px rgba(15, 23, 42, 0.06);
  --radius: 14px;
  --radius-sm: 10px;
  --container: 1200px;
}

/* ---------- Layout ---------- */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
.section {
  padding: 88px 0;
}
.section-alt {
  background: var(--bg-soft);
}
.section-head {
  max-width: 760px;
  margin: 0 auto 56px;
  text-align: center;
}
.section-eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--brand);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background: var(--brand-soft);
  padding: 6px 12px;
  border-radius: 999px;
  margin: 0 0 14px;
}
.section-title {
  font-size: 34px;
  line-height: 1.3;
  font-weight: 700;
  margin: 0 0 14px;
  color: var(--ink);
  letter-spacing: -0.01em;
}
.section-sub {
  font-size: 16px;
  color: var(--muted);
  margin: 0;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition:
    border-color 0.2s ease,
    box-shadow 0.25s ease,
    background 0.2s ease;
}
.site-header.is-scrolled {
  border-bottom-color: var(--line);
  box-shadow: var(--shadow-sm);
  background: rgba(255, 255, 255, 0.92);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 18px;
  height: 68px;
}
.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  font-weight: 700;
  color: var(--ink);
  font-size: 20px;
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.brand:hover {
  color: var(--ink);
}
.brand-name {
  position: relative;
}
.brand-r {
  font-size: 12px;
  color: var(--brand);
  margin-left: 2px;
  font-weight: 600;
  top: -0.6em;
  position: relative;
}
.brand-divider {
  color: #c7ccd6;
  font-weight: 400;
  margin: 0 2px;
}
.brand-sub {
  font-size: 14px;
  color: var(--muted);
  font-weight: 500;
  letter-spacing: 0.04em;
}

.primary-nav {
  flex: 1;
}
.primary-nav ul {
  display: flex;
  gap: 6px;
  align-items: center;
  justify-content: center;
}
.nav-link {
  position: relative;
  display: inline-block;
  padding: 10px 12px;
  font-size: 15px;
  color: var(--ink-2);
  border-radius: 8px;
  font-weight: 500;
  white-space: nowrap;
  letter-spacing: .01em;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 4px;
  width: 0;
  height: 2px;
  background: var(--brand);
  border-radius: 2px;
  transition:
    width 0.25s ease,
    left 0.25s ease;
}
.nav-link:hover,
.nav-link.active {
  color: var(--brand);
}
.nav-link:hover::after,
.nav-link.active::after {
  width: 18px;
  left: calc(50% - 9px);
}

.header-phone {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--ink);
  color: #fff;
  padding: 10px 16px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 14px;
  white-space: nowrap;
  transition:
    transform 0.2s ease,
    background 0.2s ease;
}
.header-phone:hover {
  background: var(--brand);
  color: #fff;
  transform: translateY(-1px);
}
.phone-icon {
  font-size: 14px;
}

.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
}
.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition:
    transform 0.25s ease,
    opacity 0.25s ease;
}
.menu-toggle.is-open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.menu-toggle.is-open span:nth-child(2) {
  opacity: 0;
}
.menu-toggle.is-open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.mobile-nav {
  display: none;
  flex-direction: column;
  padding: 8px 16px 18px;
  border-top: 1px solid var(--line);
  background: #fff;
}
.mobile-nav a {
  padding: 12px 4px;
  font-size: 15px;
  color: var(--ink-2);
  border-bottom: 1px solid var(--line);
}
.mobile-nav a:last-child {
  border-bottom: 0;
}
.mobile-nav .mobile-phone {
  color: var(--brand);
  font-weight: 600;
}

/* ---------- Hero / Banner ---------- */
.hero {
  position: relative;
  overflow: hidden;
  padding: 64px 0 96px;
  background:
    radial-gradient(
      1200px 600px at 90% -10%,
      rgba(11, 92, 255, 0.1),
      transparent 60%
    ),
    radial-gradient(
      900px 500px at -10% 30%,
      rgba(255, 106, 0, 0.06),
      transparent 60%
    ),
    linear-gradient(180deg, #fbfcff 0%, #f3f6ff 100%);
}
.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.hero-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.55;
}
.hero-blob-1 {
  width: 380px;
  height: 380px;
  background: rgba(11, 92, 255, 0.2);
  top: -80px;
  right: -80px;
}
.hero-blob-2 {
  width: 320px;
  height: 320px;
  background: rgba(255, 106, 0, 0.18);
  bottom: -100px;
  left: -60px;
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(15, 23, 42, 0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(15, 23, 42, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(
    ellipse 80% 60% at 50% 30%,
    #000 30%,
    transparent 80%
  );
  -webkit-mask-image: radial-gradient(
    ellipse 80% 60% at 50% 30%,
    #000 30%,
    transparent 80%
  );
}
.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}
.hero-content {
  max-width: 620px;
}
.hero-eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--brand);
  background: #fff;
  border: 1px solid var(--line);
  padding: 6px 12px;
  border-radius: 999px;
  margin: 0 0 18px;
}
.hero-title {
  font-size: 48px;
  line-height: 1.15;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 18px;
  color: var(--ink);
}
.hero-title-grad {
  background: linear-gradient(
    135deg,
    var(--brand) 0%,
    #4a8bff 50%,
    var(--accent) 100%
  );
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-sub {
  font-size: 17px;
  color: var(--muted);
  margin: 0 0 32px;
  max-width: 560px;
}
.hero-sub strong {
  color: var(--ink);
  font-weight: 600;
}
.hero-cta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}
.hero-points {
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
  color: var(--ink-2);
  font-size: 14px;
}
.hero-points .dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand);
  margin-right: 8px;
  vertical-align: middle;
}

/* Hero right side card */
.hero-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow-lg);
  padding: 22px;
  position: relative;
  transform: rotate(-1.5deg);
  transition: transform 0.35s ease;
}
.hero-card:hover {
  transform: rotate(0);
}
.hero-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--line);
  margin-bottom: 16px;
}
.hero-card-pill {
  font-size: 12px;
  font-weight: 600;
  background: var(--brand-soft);
  color: var(--brand);
  padding: 4px 10px;
  border-radius: 999px;
}
.hero-card-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #22c55e;
  box-shadow: 0 0 0 4px rgba(34, 197, 94, 0.18);
  animation: pulse 1.6s ease-in-out infinite;
}
@keyframes pulse {
  0%,
  100% {
    box-shadow: 0 0 0 4px rgba(34, 197, 94, 0.18);
  }
  50% {
    box-shadow: 0 0 0 8px rgba(34, 197, 94, 0);
  }
}
.hero-card-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.kpi {
  background: var(--bg-soft);
  border-radius: 12px;
  padding: 14px;
}
.kpi-label {
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 6px;
}
.kpi-value {
  font-size: 24px;
  font-weight: 700;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}
.hero-card-foot {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  font-size: 12px;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 10px;
}
.live-tag {
  color: #16a34a;
  font-weight: 600;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 46px;
  padding: 0 22px;
  font-size: 15px;
  font-weight: 600;
  border-radius: 10px;
  border: 1px solid transparent;
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease,
    background 0.2s ease,
    color 0.2s ease,
    border-color 0.2s ease;
  cursor: pointer;
  white-space: nowrap;
}
.btn-primary {
  background: var(--brand);
  color: #fff;
  box-shadow: 0 8px 22px rgba(11, 92, 255, 0.3);
}
.btn-primary:hover {
  background: #084be0;
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(11, 92, 255, 0.38);
}
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}
.btn-ghost:hover {
  color: var(--brand);
  border-color: var(--brand);
  background: #fff;
}

/* ---------- Grid ---------- */
.grid {
  display: grid;
  gap: 22px;
}
.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}
.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

/* ---------- Cards ---------- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  transition:
    transform 0.25s ease,
    box-shadow 0.25s ease,
    border-color 0.25s ease;
  position: relative;
  overflow: hidden;
}
.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--brand), var(--accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s ease;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(11, 92, 255, 0.35);
}
.card:hover::before {
  transform: scaleX(1);
}
.card-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--brand-soft);
  color: var(--brand);
  border-radius: 12px;
  font-size: 22px;
  margin-bottom: 16px;
}
.card-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
  margin: 0 0 10px;
}
.card-text {
  font-size: 14px;
  color: var(--muted);
  margin: 0 0 14px;
}
.card-list {
  font-size: 13.5px;
  color: var(--ink-2);
}
.card-list li {
  padding: 5px 0 5px 18px;
  position: relative;
}
.card-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 5px;
  color: var(--brand);
  font-weight: 700;
}

/* ---------- Stats ---------- */
.stat {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease;
}
.stat:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.stat-num {
  font-size: 40px;
  font-weight: 800;
  color: var(--brand);
  line-height: 1;
  margin-bottom: 8px;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}
.stat-num sup {
  font-size: 18px;
  color: var(--ink);
  margin-left: 4px;
}
.stat-label {
  color: var(--ink-2);
  font-size: 14px;
  margin: 0;
}

/* ---------- Advantage list ---------- */
.advantage-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  margin-top: 48px;
}
.adv-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
  transition:
    transform 0.25s ease,
    box-shadow 0.25s ease,
    border-color 0.25s ease;
}
.adv-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(11, 92, 255, 0.3);
}
.adv-num {
  font-size: 28px;
  font-weight: 800;
  color: var(--brand);
  margin-bottom: 10px;
  letter-spacing: -0.02em;
}
.adv-item h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
  margin: 0 0 8px;
}
.adv-item p {
  font-size: 14px;
  color: var(--muted);
  margin: 0;
}

/* ---------- Process ---------- */
.process {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  position: relative;
}
.process::before {
  content: "";
  position: absolute;
  top: 28px;
  left: 8%;
  right: 8%;
  height: 2px;
  background: repeating-linear-gradient(
    90deg,
    var(--line) 0 6px,
    transparent 6px 12px
  );
  z-index: 0;
}
.process-step {
  position: relative;
  text-align: center;
  padding: 0 14px;
  z-index: 1;
}
.process-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background: #fff;
  border: 2px solid var(--brand);
  color: var(--brand);
  font-size: 18px;
  font-weight: 800;
  border-radius: 50%;
  margin-bottom: 18px;
  transition:
    background 0.25s ease,
    color 0.25s ease,
    transform 0.25s ease;
}
.process-step:hover .process-num {
  background: var(--brand);
  color: #fff;
  transform: scale(1.06);
}
.process-step h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  margin: 0 0 6px;
}
.process-step p {
  font-size: 13.5px;
  color: var(--muted);
  margin: 0;
}

/* ---------- Industry Cards ---------- */
.industry-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 20px;
  transition:
    transform 0.25s ease,
    box-shadow 0.25s ease,
    border-color 0.25s ease,
    background 0.25s ease;
  cursor: default;
}
.industry-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--brand);
  background: linear-gradient(180deg, #fff 0%, #f4f8ff 100%);
}
.industry-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  margin: 0 0 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.industry-card h3::before {
  content: "";
  width: 4px;
  height: 16px;
  background: var(--brand);
  border-radius: 2px;
}
.industry-card p {
  font-size: 13.5px;
  color: var(--muted);
  margin: 0;
}

/* ---------- Cases ---------- */
.case-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 22px;
  text-align: center;
  transition:
    transform 0.25s ease,
    box-shadow 0.25s ease;
}
.case-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.case-num {
  font-size: 38px;
  font-weight: 800;
  color: var(--brand);
  line-height: 1;
  margin-bottom: 6px;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}
.case-label {
  font-size: 14px;
  color: var(--ink);
  font-weight: 600;
  margin: 0 0 6px;
}
.case-tag {
  font-size: 12px;
  color: var(--muted);
  margin: 0;
}

.case-testimonial {
  max-width: 760px;
  margin: 48px auto 0;
  text-align: center;
  background: linear-gradient(180deg, #fff 0%, #f4f8ff 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px 28px;
  position: relative;
}
.case-testimonial p {
  font-size: 15px;
  color: var(--ink-2);
  margin: 0 0 8px;
  font-style: italic;
}
.case-testimonial p::before,
.case-testimonial p::after {
  color: var(--brand);
  font-weight: 700;
}
.case-testimonial p::before {
  content: "“";
  margin-right: 4px;
}
.case-testimonial p::after {
  content: "”";
  margin-left: 4px;
}
.case-by {
  font-size: 13px !important;
  color: var(--muted) !important;
  font-style: normal !important;
}

/* ---------- FAQ ---------- */
.faq-list {
  max-width: 880px;
  margin: 0 auto;
}
.faq-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
  transition:
    border-color 0.2s ease,
    box-shadow 0.2s ease;
}
.faq-item[open] {
  border-color: rgba(11, 92, 255, 0.35);
  box-shadow: var(--shadow-sm);
}
.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 18px 22px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  font-weight: 600;
  color: var(--ink);
  font-size: 15.5px;
  transition:
    background 0.2s ease,
    color 0.2s ease;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary:hover {
  color: var(--brand);
}
.faq-item[open] summary {
  color: var(--brand);
}
.faq-q {
  flex: 1;
}
.faq-ico {
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  font-size: 16px;
  font-weight: 700;
  color: var(--brand);
  transition:
    transform 0.2s ease,
    background 0.2s ease,
    color 0.2s ease,
    border-color 0.2s ease;
  flex-shrink: 0;
}
.faq-item[open] .faq-ico {
  background: var(--brand);
  color: #fff;
  border-color: var(--brand);
  transform: rotate(45deg);
}
.faq-a {
  padding: 0 22px 22px;
  color: var(--ink-2);
  font-size: 14.5px;
  line-height: 1.85;
  border-top: 1px dashed var(--line);
  padding-top: 16px;
  margin-top: -2px;
}

/* ---------- About ---------- */
.about-inner {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 64px;
  align-items: center;
}
.about-photo {
  position: relative;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  aspect-ratio: 4 / 5;
  background: var(--bg-soft);
}
.about-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.about-photo:hover img {
  transform: scale(1.03);
}
.about-badge {
  position: absolute;
  left: 16px;
  bottom: 16px;
  background: rgba(15, 23, 42, 0.85);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 999px;
  backdrop-filter: blur(8px);
}
.about-text p {
  color: var(--ink-2);
  margin: 0 0 14px;
  font-size: 15.5px;
}
.about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 22px 0 28px;
}
.about-tags li {
  font-size: 13px;
  background: var(--brand-soft);
  color: var(--brand);
  padding: 5px 12px;
  border-radius: 999px;
  font-weight: 500;
}

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.contact-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 22px;
  text-align: center;
  transition:
    transform 0.25s ease,
    box-shadow 0.25s ease,
    border-color 0.25s ease;
  display: block;
}
.contact-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--brand);
  color: var(--ink);
}
.contact-ico {
  font-size: 28px;
  margin-bottom: 10px;
}
.contact-name {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 6px;
}
.contact-value {
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.01em;
  word-break: break-all;
}
.contact-qr img {
  margin: 10px auto 0;
  border: 6px solid #fff;
  border-radius: 12px;
  box-shadow: 0 4px 14px rgba(15, 23, 42, 0.1);
  width: 140px;
  height: 140px;
}

/* ---------- Link grid (more services) ---------- */
.link-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 10px;
}
.link-grid li a {
  display: block;
  text-align: center;
  font-size: 13.5px;
  color: var(--ink-2);
  background: #fff;
  border: 1px solid var(--line);
  padding: 12px 8px;
  border-radius: 10px;
  transition:
    transform 0.2s ease,
    color 0.2s ease,
    border-color 0.2s ease,
    background 0.2s ease;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.link-grid li a:hover {
  color: var(--brand);
  border-color: var(--brand);
  background: var(--brand-soft);
  transform: translateY(-2px);
}

/* ---------- Footer ---------- */
.site-footer {
  background: #0f172a;
  color: #cbd5e1;
  padding: 36px 0 28px;
  text-align: center;
}
.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: center;
}
.footer-line {
  font-size: 14px;
  color: #94a3b8;
}
.footer-line a {
  color: #cbd5e1;
}
.footer-ybl {
  color: #fff;
  font-weight: 600;
}
.footer-ybl:hover {
  color: var(--brand-2);
}
.footer-domain:hover {
  color: var(--brand-2);
}
.footer-icp {
  color: var(--brand-2);
  border-bottom: 1px dashed rgba(42, 134, 255, 0.5);
  padding-bottom: 1px;
}
.footer-icp:hover {
  color: #fff;
}
.footer-meta {
  color: #64748b;
  font-size: 12.5px;
  margin-top: 6px;
}

/* ---------- Floating phone ---------- */
.float-phone {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 56px;
  height: 56px;
  background: var(--brand);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-size: 22px;
  box-shadow: 0 10px 24px rgba(11, 92, 255, 0.4);
  z-index: 40;
  transition:
    transform 0.25s ease,
    box-shadow 0.25s ease,
    background 0.25s ease;
  animation: floatBounce 2.4s ease-in-out infinite;
}
.float-phone:hover {
  background: var(--accent);
  color: #fff;
  transform: translateY(-4px) scale(1.04);
  box-shadow: 0 14px 28px rgba(255, 106, 0, 0.45);
}
@keyframes floatBounce {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-6px);
  }
}

/* ---------- Reveal on scroll ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 0.7s ease,
    transform 0.7s ease;
}
[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Responsive ---------- */
@media (max-width: 1180px) {
  .header-inner { gap: 10px; }
  .nav-link { padding: 10px 9px; font-size: 14.5px; }
  .brand-sub { display: none; }
  .brand-divider { display: none; }
  .header-phone .phone-text { display: none; }
  .header-phone { width: 40px; height: 40px; padding: 0; border-radius: 50%; justify-content: center; }
  .header-phone .phone-icon { font-size: 16px; }
}

@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .advantage-list { grid-template-columns: repeat(2, 1fr); }
  .link-grid { grid-template-columns: repeat(4, 1fr); }
  .process { grid-template-columns: repeat(3, 1fr); row-gap: 32px; }
  .process::before { display: none; }
  .contact-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-inner { grid-template-columns: 1fr; }
  .hero-card { transform: none; max-width: 480px; margin: 0 auto; }
  .about-inner { grid-template-columns: 280px 1fr; gap: 40px; }
  .section { padding: 72px 0; }
  .hero-title { font-size: 40px; }
  .primary-nav, .header-phone { display: none; }
  .menu-toggle { display: inline-flex; }
  .mobile-nav.is-open { display: flex; }
}

@media (max-width: 768px) {
  .primary-nav,
  .header-phone {
    display: none;
  }
  .menu-toggle {
    display: inline-flex;
  }
  .mobile-nav.is-open {
    display: flex;
  }
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
  .advantage-list {
    grid-template-columns: 1fr;
  }
  .link-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .process {
    grid-template-columns: 1fr;
    row-gap: 24px;
  }
  .contact-grid {
    grid-template-columns: 1fr 1fr;
  }
  .section {
    padding: 56px 0;
  }
  .section-head {
    margin-bottom: 40px;
  }
  .section-title {
    font-size: 26px;
  }
  .hero {
    padding: 40px 0 64px;
  }
  .hero-title {
    font-size: 30px;
  }
  .hero-sub {
    font-size: 15px;
  }
  .hero-card-body {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }
  .kpi {
    padding: 10px;
  }
  .kpi-value {
    font-size: 20px;
  }
  .about-inner {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .about-photo {
    max-width: 320px;
    margin: 0 auto;
  }
  .float-phone {
    width: 50px;
    height: 50px;
    font-size: 20px;
    right: 16px;
    bottom: 16px;
  }
  .stat-num {
    font-size: 32px;
  }
  .case-num {
    font-size: 30px;
  }
  .btn {
    height: 44px;
    padding: 0 18px;
    font-size: 14px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 18px;
  }
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .link-grid {
    grid-template-columns: 1fr 1fr;
  }
  .footer-line {
    font-size: 13px;
  }
  .hero-title {
    font-size: 26px;
  }
  .section-title {
    font-size: 22px;
  }
  .hero-card-body {
    grid-template-columns: 1fr 1fr;
  }
}