:root {
  --ink: #101216;
  --muted: #667085;
  --paper: #ffffff;
  --panel: #f5f7fb;
  --blue: #2457ff;
  --blue-deep: #1d4ed8;
  --gold: #c8a76a;
  --line: rgba(16, 18, 22, 0.08);
  --glass: rgba(255, 255, 255, 0.12);
  --space-8: 8px;
  --space-12: 12px;
  --space-16: 16px;
  --space-24: 24px;
  --space-32: 32px;
  --space-48: 48px;
  --section: 40px;
  --radius: 20px;
  --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.04);
  --shadow-blue: 0 8px 30px rgba(36, 87, 255, 0.25);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  width: 100%;
  min-height: 100vh;
  margin: 0;
  padding: 0 0 72px;
  overflow-x: hidden;
  color: var(--ink);
  background:
    linear-gradient(180deg, #081120 0%, #0d1830 17%, #f5f7fb 42%, #ffffff 100%);
  font-family: "Inter", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
  line-height: 1.8;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  width: 100%;
  max-width: 100%;
}

.page-pad {
  width: 100%;
  padding-inline: 20px;
}

.mobile-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  height: 64px;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-16);
  background: rgba(7, 13, 26, 0.72);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(18px);
}

.mobile-nav.is-light {
  background: rgba(255, 255, 255, 0.88);
  border-bottom-color: rgba(16, 18, 22, 0.08);
}

.brand {
  min-width: 0;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: #fff;
  font-weight: 900;
}

.mobile-nav.is-light .brand {
  color: var(--ink);
}

.brand-mark {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  color: #fff;
  background: #101216;
  font-size: 12px;
  letter-spacing: -0.03em;
}

.brand-name {
  font-size: 16px;
  letter-spacing: -0.02em;
}

.nav-action {
  height: 38px;
  padding: 0 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.16);
  font-size: 13px;
  font-weight: 800;
  backdrop-filter: blur(12px);
}

.mobile-nav.is-light .nav-action {
  color: #fff;
  background: #101216;
}

.hero {
  position: relative;
  overflow: hidden;
  min-height: 0;
  color: #fff;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 82% 12%, rgba(36, 87, 255, 0.38), transparent 28%),
    radial-gradient(circle at 10% 54%, rgba(200, 167, 106, 0.18), transparent 30%),
    linear-gradient(145deg, #07101f 0%, #0d1830 58%, #081120 100%);
}

.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, transparent 0%, rgba(8, 17, 32, 0.08) 62%, #0d1830 100%),
    repeating-linear-gradient(115deg, rgba(255, 255, 255, 0.04) 0 1px, transparent 1px 18px);
  opacity: 0.9;
}

.hero-inner {
  position: relative;
  z-index: 1;
  padding-top: 24px;
  padding-bottom: 24px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 var(--space-16);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #7da2ff;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.12em;
}

.eyebrow::before,
.section-kicker::before {
  content: "";
  width: 28px;
  height: 1px;
  background: currentColor;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 7.5em;
  margin-bottom: 12px;
  font-size: clamp(32px, 8vw, 38px);
  line-height: 1.12;
  letter-spacing: -0.03em;
}

.hero-subtitle {
  max-width: 21em;
  margin-bottom: 16px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 15px;
  line-height: 1.8;
}

.btn {
  height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 700;
  border: 1px solid transparent;
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--blue), var(--blue-deep));
  box-shadow: var(--shadow-blue);
}

.btn-ghost {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.72);
  border-color: rgba(16, 18, 22, 0.08);
}

.hero .btn {
  width: calc(100% - 20px);
  max-width: 340px;
}

.hero-visual {
  position: relative;
  margin: 16px 0 0;
  overflow: hidden;
  border-radius: 24px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: var(--glass);
  box-shadow: 0 26px 70px rgba(0, 0, 0, 0.22);
  backdrop-filter: blur(18px);
}

.hero-visual img {
  aspect-ratio: 16 / 11;
  object-fit: cover;
  filter: saturate(0.94) contrast(1.04);
}

.hero-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 42%, rgba(5, 7, 11, 0.76));
}

.hero-visual figcaption {
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 12px;
  z-index: 1;
  padding: 12px 14px;
  border-radius: 16px;
  background: rgba(7, 12, 22, 0.52);
  border: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(16px);
}

.hero-visual strong,
.hero-visual span {
  display: block;
}

.hero-visual strong {
  font-size: 16px;
  line-height: 1.35;
}

.hero-visual span {
  margin-top: 4px;
  color: rgba(255, 255, 255, 0.68);
  font-size: 13px;
}

.trust-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-12);
  padding-top: 12px;
  padding-bottom: 26px;
  color: #fff;
  background: linear-gradient(180deg, #0d1830 0%, #f5f7fb 100%);
}

.trust-card {
  min-width: 0;
  padding: 13px 10px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.04);
  backdrop-filter: blur(16px);
}

.trust-card strong {
  display: block;
  font-size: 20px;
  line-height: 1;
  letter-spacing: -0.03em;
}

.trust-card span {
  display: block;
  margin-top: 6px;
  color: rgba(255, 255, 255, 0.68);
  font-size: 11px;
  line-height: 1.4;
}

.section {
  padding-block: var(--section);
}

.intro-section {
  padding-top: 34px;
  background: var(--panel);
}

.services-section,
.cases-section,
.process-section {
  background: var(--panel);
}

.section h2 {
  margin-bottom: 12px;
  font-size: clamp(24px, 6.4vw, 30px);
  line-height: 1.2;
  letter-spacing: -0.03em;
}

.section h3 {
  margin-bottom: var(--space-8);
  font-size: 18px;
  line-height: 1.28;
  letter-spacing: -0.02em;
}

.section-desc,
.section p {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.72;
}

.section-head {
  margin-bottom: 16px;
}

.scroll-row {
  display: flex;
  gap: var(--space-16);
  overflow-x: auto;
  padding: 0 20px 6px;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
}

.scroll-row::-webkit-scrollbar {
  display: none;
}

.service-card {
  flex: 0 0 66%;
  min-height: 268px;
  scroll-snap-align: start;
  overflow: hidden;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid rgba(255, 255, 255, 0.6);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(16px);
}

.service-card img {
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.service-card span,
.case-card span {
  display: inline-flex;
  margin: 14px 16px 8px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.service-card h3,
.service-card p {
  padding-inline: 16px;
}

.service-card p {
  margin-bottom: 16px;
  font-size: 14px;
}

.case-list {
  display: grid;
  gap: 14px;
}

.case-card {
  position: relative;
  overflow: hidden;
  min-height: 236px;
  border-radius: 22px;
  color: #fff;
  background: #111827;
  border: 1px solid rgba(255, 255, 255, 0.72);
  box-shadow: 0 14px 36px rgba(8, 17, 32, 0.08);
}

.case-card img {
  height: 100%;
  min-height: 236px;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  opacity: 0.9;
  transform: scale(1.01);
}

.case-card div {
  position: absolute;
  inset: auto 0 0;
  z-index: 1;
  padding: 64px 18px 18px;
  background: linear-gradient(180deg, transparent, rgba(5, 8, 14, 0.9));
}

.case-card span {
  margin-left: 0;
  margin-right: 0;
}

.case-card p {
  margin-bottom: 12px;
  color: rgba(255, 255, 255, 0.72);
}

.case-card a {
  display: inline-flex;
  color: #fff;
  font-size: 14px;
  font-weight: 900;
}

.compare-section {
  background:
    radial-gradient(circle at 88% 10%, rgba(36, 87, 255, 0.1), transparent 28%),
    #f5f7fb;
}

.compare-card {
  flex: 0 0 88%;
  scroll-snap-align: start;
  padding: 10px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(255, 255, 255, 0.7);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(18px);
}

.compare-images {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
}

.compare-images figure {
  position: relative;
  margin: 0;
  overflow: hidden;
  border-radius: 16px;
  background: #e8edf5;
}

.compare-images img {
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.compare-images figcaption {
  position: absolute;
  left: 8px;
  top: 8px;
  padding: 4px 8px;
  border-radius: 999px;
  color: #fff;
  background: rgba(8, 12, 20, 0.62);
  font-size: 10px;
  font-weight: 900;
  backdrop-filter: blur(10px);
}

.compare-card h3 {
  margin: 14px 8px 6px;
}

.compare-card p {
  margin: 0 8px 8px;
  font-size: 14px;
}

.timeline {
  position: relative;
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 40px;
  top: 16px;
  bottom: 16px;
  width: 1px;
  background: var(--line);
}

.timeline-item {
  position: relative;
  display: grid;
  grid-template-columns: 44px 1fr;
  column-gap: 12px;
  padding: 16px;
  border-radius: 18px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: none;
}

.timeline-item span {
  position: relative;
  z-index: 1;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 13px;
  color: var(--blue);
  background: #eef4ff;
  font-size: 15px;
  font-weight: 900;
}

.timeline-item strong {
  grid-column: 2;
  display: block;
  margin-bottom: 3px;
  font-size: 17px;
  line-height: 1.35;
}

.timeline-item p {
  grid-column: 2;
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.58;
}

.timeline-item:last-child {
  border-color: rgba(200, 167, 106, 0.52);
  background: linear-gradient(135deg, #fff, #fbf8ef);
}

.timeline-item:last-child span {
  color: #101216;
  background: var(--gold);
}

.contact-section {
  padding: 8px 20px 32px;
  background:
    radial-gradient(circle at 84% 18%, rgba(36, 87, 255, 0.22), transparent 32%),
    linear-gradient(145deg, #081120, #101827);
}

.contact-card {
  padding: 22px 18px;
  border-radius: 24px;
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 26px 70px rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(18px);
}

.contact-card h2 {
  margin-bottom: 12px;
  font-size: clamp(25px, 6.7vw, 32px);
  line-height: 1.18;
  letter-spacing: -0.03em;
}

.contact-card p {
  color: rgba(255, 255, 255, 0.72);
  font-size: 14px;
  line-height: 1.68;
}

.phone-link {
  height: 44px;
  margin: 14px 0;
  padding: 0 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.14);
  font-size: 15px;
  font-weight: 900;
}

.contact-form {
  display: grid;
  gap: 10px;
  margin-top: 2px;
}

.contact-form label {
  display: grid;
  gap: 8px;
}

.contact-form label span {
  color: rgba(255, 255, 255, 0.78);
  font-size: 13px;
  font-weight: 900;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 16px;
  outline: none;
  color: #fff;
  background: rgba(255, 255, 255, 0.09);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.contact-form input,
.contact-form select {
  height: 46px;
  padding: 0 14px;
}

.contact-form textarea {
  min-height: 78px;
  padding: 13px 14px;
  resize: vertical;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: rgba(255, 255, 255, 0.42);
}

.contact-form select {
  appearance: none;
}

.contact-form option {
  color: var(--ink);
}

.contact-form .btn {
  width: 100%;
  margin-top: 4px;
}

.form-success {
  display: none;
  margin: 0;
  color: rgba(255, 255, 255, 0.78) !important;
  font-size: 13px !important;
}

.form-success.show {
  display: block;
}

.bottom-bar {
  position: fixed;
  left: 0;
  bottom: 0;
  z-index: 60;
  width: 100%;
  padding: 8px 20px calc(8px + env(safe-area-inset-bottom));
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 10px;
  transform: none;
  background: rgba(255, 255, 255, 0.86);
  border-top: 1px solid rgba(16, 18, 22, 0.08);
  backdrop-filter: blur(18px);
}

.bottom-bar a {
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 900;
  white-space: nowrap;
}

.bottom-bar a:first-child {
  color: var(--ink);
  background: #eef2f8;
}

.bottom-bar a:last-child {
  color: #fff;
  background: linear-gradient(135deg, var(--blue), var(--blue-deep));
  box-shadow: var(--shadow-blue);
}

@media (max-width: 360px) {
  .page-pad,
  .mobile-nav,
  .scroll-row,
  .bottom-bar {
    padding-inline: 16px;
  }

  .trust-strip {
    gap: 8px;
  }

  .trust-card {
    padding-inline: 10px;
  }

}