:root {
  --bg: #06111f;
  --bg-soft: #0c1b31;
  --surface: rgba(10, 24, 44, 0.82);
  --surface-strong: rgba(8, 20, 37, 0.95);
  --surface-alt: rgba(16, 34, 60, 0.88);
  --text: #eff5ff;
  --muted: #96abc9;
  --line: rgba(122, 164, 218, 0.18);
  --accent: #32d7ff;
  --accent-strong: #11a8ff;
  --accent-soft: rgba(50, 215, 255, 0.12);
  --success: #79e7c6;
  --danger: #ffb1b8;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.32);
  --radius-lg: 28px;
  --radius-md: 20px;
  --radius-sm: 14px;
  --max-width: 1160px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 15% 20%, rgba(17, 107, 196, 0.28), transparent 30%),
    radial-gradient(circle at 82% 16%, rgba(50, 215, 255, 0.18), transparent 24%),
    linear-gradient(180deg, #071221 0%, #081426 45%, #050d18 100%);
  line-height: 1.65;
  min-height: 100vh;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.45), transparent 92%);
  pointer-events: none;
}

a {
  color: inherit;
}

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

button,
input,
textarea {
  font: inherit;
}

.container {
  width: min(100% - 2rem, var(--max-width));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: rgba(4, 10, 19, 0.58);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.header-inner,
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.2rem;
}

.header-inner {
  min-height: 76px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  text-decoration: none;
}

.brand-logo {
  display: block;
  width: 42px;
  height: 42px;
  flex: 0 0 42px;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background:
    linear-gradient(135deg, rgba(50, 215, 255, 0.28), rgba(17, 168, 255, 0.12)),
    rgba(255, 255, 255, 0.02);
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.08em;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.brand-text {
  font-size: 0.96rem;
  font-weight: 600;
}

.menu-toggle {
  display: none;
  width: 48px;
  height: 48px;
  padding: 0;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 0 auto;
  background: currentColor;
}

.menu-toggle span + span {
  margin-top: 5px;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 1.1rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-list a {
  color: var(--muted);
  text-decoration: none;
  transition: color 160ms ease;
}

.nav-list a[aria-current="page"] {
  color: var(--text);
}

.nav-list a:hover,
.nav-list a:focus-visible {
  color: var(--text);
}

.nav-list a:focus-visible,
.button:focus-visible,
.menu-toggle:focus-visible,
.contact-card a:focus-visible,
.site-footer a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 48px;
  padding: 0.75rem 1.25rem;
  border-radius: 999px;
  border: 1px solid transparent;
  text-decoration: none;
  font-weight: 700;
  cursor: pointer;
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    border-color 180ms ease,
    background 180ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
}

.button-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #04101d;
  box-shadow: 0 12px 30px rgba(17, 168, 255, 0.28);
}

.button-secondary {
  border-color: rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
}

.section {
  position: relative;
  padding: 5.5rem 0;
}

.section-shell {
  position: relative;
}

.section-heading {
  max-width: 42rem;
  margin-bottom: 2rem;
}

.section-link,
.section-cta {
  margin-top: 1.4rem;
}

.section-link a {
  color: var(--text);
  text-decoration: none;
}

.section-heading h2,
.hero h1 {
  margin: 0;
  line-height: 1.08;
  letter-spacing: -0.03em;
}

.hero {
  padding-top: 7rem;
  padding-bottom: 4.5rem;
}

.page-hero {
  padding-top: 7rem;
  padding-bottom: 3rem;
}

.hero-layout,
.contact-layout,
.split-layout,
.page-hero-layout,
.action-strip,
.case-entry {
  display: grid;
  gap: 2rem;
}

.hero-layout {
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.95fr);
  align-items: center;
}

.page-hero-layout {
  grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.85fr);
  align-items: center;
}

.hero-copy,
.hero-panel,
.contact-form,
.contact-card,
.service-card,
.advantage-card,
.scenario-card,
.process-step,
.case-preview-card,
.detail-card,
.service-detail-card,
.case-media,
.case-body,
.action-strip {
  position: relative;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  border-radius: 999px;
  filter: blur(12px);
  pointer-events: none;
}

.hero-glow-one {
  top: 4rem;
  left: -6rem;
  width: 18rem;
  height: 18rem;
  background: rgba(17, 168, 255, 0.16);
}

.hero-glow-two {
  right: 8%;
  top: 4rem;
  width: 14rem;
  height: 14rem;
  background: rgba(50, 215, 255, 0.12);
}

.eyebrow {
  margin: 0 0 0.9rem;
  color: var(--accent);
  letter-spacing: 0.16em;
  font-size: 0.82rem;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 12ch;
  font-size: clamp(3rem, 5vw, 5.6rem);
}

.page-title {
  margin: 0;
  max-width: 12ch;
  line-height: 1.08;
  letter-spacing: -0.03em;
  font-size: clamp(2.8rem, 4.6vw, 5rem);
}

.lead {
  max-width: 42rem;
  margin: 1.35rem 0 0;
  color: var(--muted);
  font-size: 1.08rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 2rem;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin: 1.6rem 0 0;
  padding: 0;
  list-style: none;
}

.hero-tags li {
  padding: 0.5rem 0.85rem;
  border-radius: 999px;
  color: var(--muted);
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.03);
}

.hero-panel {
  padding: 1.35rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(17, 33, 58, 0.72), rgba(5, 14, 26, 0.92)),
    rgba(255, 255, 255, 0.03);
  box-shadow: var(--shadow);
}

.hero-panel::before,
.service-card::before,
.advantage-card::before,
.scenario-card::before,
.process-step::before,
.contact-form::before,
.contact-card::before,
.case-preview-card::before,
.detail-card::before,
.service-detail-card::before,
.case-media::before,
.case-body::before,
.action-strip::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.08), transparent 42%);
  pointer-events: none;
}

.hero-panel-grid {
  display: grid;
  gap: 1rem;
}

.metric-card {
  padding: 1.1rem 1.2rem;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.metric-card strong,
.process-step strong {
  display: block;
  margin-top: 0.35rem;
  font-size: 1.35rem;
  letter-spacing: -0.03em;
}

.metric-card p,
.service-card p,
.advantage-card p,
.scenario-card p,
.process-step p,
.contact-copy p,
.about-content p {
  margin-bottom: 0;
  color: var(--muted);
}

.metric-label {
  color: var(--accent);
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.signal-board {
  position: relative;
  margin-top: 1rem;
  height: 180px;
  border-radius: var(--radius-md);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), transparent),
    rgba(3, 10, 20, 0.66);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.signal-line,
.signal-dot {
  position: absolute;
}

.signal-line {
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
}

.signal-line-a {
  top: 42px;
  left: 12%;
  width: 66%;
}

.signal-line-b {
  top: 108px;
  left: 24%;
  width: 52%;
}

.signal-dot {
  width: 12px;
  height: 12px;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 0 10px rgba(50, 215, 255, 0.08);
}

.signal-dot-a {
  top: 36px;
  left: 20%;
}

.signal-dot-b {
  top: 102px;
  left: 48%;
}

.signal-dot-c {
  top: 74px;
  right: 18%;
}

.split-layout {
  grid-template-columns: minmax(0, 0.86fr) minmax(0, 1fr);
  align-items: start;
  padding: 2rem 0;
}

.about-content {
  padding: 1.8rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
}

.about-points {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.5rem;
}

.about-points span {
  padding: 0.65rem 0.9rem;
  border-radius: 999px;
  background: var(--accent-soft);
  border: 1px solid rgba(50, 215, 255, 0.18);
  color: #d8f7ff;
}

.card-grid,
.scenario-grid,
.process-grid,
.detail-grid,
.case-preview-grid {
  display: grid;
  gap: 1rem;
}

.card-grid,
.scenario-grid,
.detail-grid,
.case-preview-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.process-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: step;
}

.service-card,
.advantage-card,
.scenario-card,
.process-step,
.contact-form,
.contact-card,
.case-preview-card,
.detail-card,
.service-detail-card,
.case-body,
.action-strip {
  padding: 1.4rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.04), transparent),
    var(--surface);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.18);
}

.service-card h3,
.advantage-card h3,
.scenario-card h3,
.contact-copy h2,
.section-heading h2 {
  margin: 0;
  font-size: clamp(1.5rem, 2vw, 2.6rem);
  letter-spacing: -0.03em;
}

.service-card h3,
.advantage-card h3,
.scenario-card h3 {
  font-size: 1.3rem;
  margin-top: 0.8rem;
}

.card-index,
.scenario-card span,
.case-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.5rem;
  padding: 0.2rem 0.7rem;
  border-radius: 999px;
  background: rgba(50, 215, 255, 0.1);
  color: var(--accent);
  font-size: 0.84rem;
  font-weight: 700;
}

.process-step {
  counter-increment: step;
  min-height: 100%;
}

.process-step strong::before {
  content: "0" counter(step) " ";
  display: block;
  margin-bottom: 0.8rem;
  color: var(--accent);
  font-size: 0.9rem;
  letter-spacing: 0.14em;
}

.contact-layout {
  grid-template-columns: minmax(0, 0.9fr) minmax(340px, 1fr);
  align-items: start;
}

.contact-copy h2 {
  font-size: clamp(2rem, 3vw, 3.4rem);
}

.contact-card {
  margin-top: 1.5rem;
  display: grid;
  gap: 0.45rem;
  background:
    linear-gradient(135deg, rgba(17, 168, 255, 0.12), transparent 55%),
    var(--surface-strong);
}

.contact-card span {
  color: var(--muted);
  font-size: 0.9rem;
}

.contact-card p {
  margin: 0;
  color: var(--muted);
}

.contact-card a {
  text-decoration: none;
  color: var(--text);
  font-size: 1.1rem;
  font-weight: 700;
}

.contact-form {
  display: grid;
  gap: 0.75rem;
}

.contact-form label {
  font-size: 0.95rem;
  color: #dbe9ff;
}

input,
textarea {
  width: 100%;
  padding: 0.95rem 1rem;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.09);
  background: var(--surface-alt);
  color: var(--text);
  transition:
    border-color 160ms ease,
    box-shadow 160ms ease,
    background 160ms ease;
}

input::placeholder,
textarea::placeholder {
  color: #7790b4;
}

input:focus,
textarea:focus {
  outline: none;
  border-color: rgba(50, 215, 255, 0.44);
  box-shadow: 0 0 0 4px rgba(50, 215, 255, 0.1);
}

textarea {
  resize: vertical;
  min-height: 140px;
}

#form-feedback {
  min-height: 1.5rem;
  margin: 0.2rem 0 0;
  color: var(--muted);
}

#form-feedback[data-state="error"] {
  color: var(--danger);
}

#form-feedback[data-state="success"] {
  color: var(--success);
}

.field-error {
  min-height: 1.2rem;
  margin: -0.15rem 0 0.2rem;
  color: var(--danger);
  font-size: 0.88rem;
}

input[aria-invalid="true"],
textarea[aria-invalid="true"] {
  border-color: rgba(255, 177, 184, 0.72);
  box-shadow: 0 0 0 4px rgba(255, 177, 184, 0.1);
}

.js-ready [data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition:
    opacity 600ms ease,
    transform 600ms ease;
}

.js-ready [data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

.detail-card h3,
.case-preview-card h3,
.service-detail-card h2,
.case-body h2,
.action-strip h2 {
  margin: 0 0 0.75rem;
  letter-spacing: -0.03em;
}

.detail-card p,
.case-preview-card p,
.service-detail-card p,
.case-body p,
.action-strip p {
  margin: 0;
  color: var(--muted);
}

.service-stack,
.case-list {
  display: grid;
  gap: 1.2rem;
}

.service-detail-card {
  display: grid;
  gap: 1rem;
}

.bullet-list {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--muted);
}

.bullet-list li + li {
  margin-top: 0.45rem;
}

.case-preview-card {
  display: grid;
  gap: 0.9rem;
}

.case-list {
  gap: 1.4rem;
}

.case-entry {
  grid-template-columns: minmax(220px, 0.65fr) minmax(0, 1fr);
  align-items: stretch;
}

.case-media {
  display: grid;
  align-content: end;
  gap: 0.85rem;
  min-height: 240px;
  padding: 1.4rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background:
    radial-gradient(circle at 20% 20%, rgba(50, 215, 255, 0.2), transparent 34%),
    linear-gradient(160deg, rgba(6, 18, 34, 0.7), rgba(9, 29, 52, 0.94));
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.18);
}

.case-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}

.case-media > * {
  position: relative;
  z-index: 1;
}

.case-media strong {
  font-size: 1.45rem;
  line-height: 1.2;
  text-shadow: 0 12px 28px rgba(0, 0, 0, 0.55);
}

.case-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(5, 12, 24, 0.08) 0%, rgba(5, 12, 24, 0.28) 38%, rgba(5, 12, 24, 0.88) 100%);
}

.case-body {
  display: grid;
  align-content: center;
  gap: 1rem;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.case-tag {
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
  padding: 0.35rem 0.8rem;
  border-radius: 999px;
  border: 1px solid rgba(50, 215, 255, 0.18);
  background: var(--accent-soft);
  color: #d8f7ff;
  font-size: 0.84rem;
  font-weight: 700;
}

.action-strip {
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  background:
    linear-gradient(135deg, rgba(17, 168, 255, 0.14), transparent 55%),
    var(--surface-strong);
}

.site-footer {
  padding: 1.5rem 0 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  color: var(--muted);
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
}

.footer-brand p {
  margin: 0;
}

.footer-logo {
  display: block;
  width: 36px;
  height: 36px;
  flex: 0 0 36px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 1rem;
}

.site-footer a {
  color: var(--text);
  text-decoration: none;
}

@media (max-width: 1080px) {
  .hero-layout,
  .split-layout,
  .contact-layout,
  .process-grid,
  .page-hero-layout,
  .case-entry,
  .action-strip {
    grid-template-columns: 1fr;
  }

  .process-grid {
    gap: 1rem;
  }
}

@media (max-width: 820px) {
  .header-inner,
  .footer-inner {
    align-items: flex-start;
  }

  .header-inner {
    position: relative;
    flex-wrap: wrap;
    padding: 0.9rem 0;
  }

  .menu-toggle {
    margin-left: auto;
  }

  .js-ready .menu-toggle {
    display: inline-block;
  }

  .js-ready #site-nav {
    display: none;
    width: 100%;
    padding-top: 0.8rem;
  }

  .js-ready #site-nav[data-open="true"] {
    display: block;
  }

  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    row-gap: 0.6rem;
  }

  .card-grid,
  .scenario-grid,
  .detail-grid,
  .case-preview-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 5.5rem;
  }

  .hero h1 {
    max-width: none;
    font-size: clamp(2.6rem, 12vw, 4rem);
  }

  .section {
    padding: 4.2rem 0;
  }

  .header-cta {
    width: 100%;
  }

  .footer-brand {
    align-items: flex-start;
  }
}

@media (max-width: 560px) {
  .container {
    width: min(100% - 1.2rem, var(--max-width));
  }

  .button {
    width: 100%;
  }

  .hero-actions {
    flex-direction: column;
  }

  .brand {
    align-items: flex-start;
  }

  .brand-text {
    font-size: 0.88rem;
  }

  .service-card,
  .advantage-card,
  .scenario-card,
  .process-step,
  .contact-form,
  .contact-card,
  .about-content,
  .hero-panel,
  .case-preview-card,
  .detail-card,
  .service-detail-card,
  .case-body,
  .case-media,
  .action-strip {
    padding: 1.1rem;
  }

  .footer-links {
    justify-content: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition-duration: 0.01ms !important;
    transition-delay: 0ms !important;
  }

  .js-ready [data-reveal] {
    opacity: 1;
    transform: none;
  }
}