:root {
  --ink: #111827;
  --muted: #4b5563;
  --soft: #6b7280;
  --line: #e5e7eb;
  --panel: #ffffff;
  --bg: #f8fafc;
  --bg-blue: #f3f8ff;
  --blue: #2563eb;
  --blue-deep: #1e40af;
  --cyan: #06b6d4;
  --indigo: #6366f1;
  --green: #10b981;
  --shadow: 0 18px 50px rgba(17, 24, 39, .08);
  --shadow-soft: 0 10px 28px rgba(30, 64, 175, .08);
  --glow-blue: 0 0 34px rgba(37, 99, 235, .22);
  --glow-cyan: 0 0 34px rgba(6, 182, 212, .2);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", Arial, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 18% 0%, rgba(37, 99, 235, .06), transparent 28%),
    linear-gradient(180deg, #ffffff 0%, #fbfdff 42%, #ffffff 100%);
  line-height: 1.7;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(115deg, transparent 0 18%, rgba(37, 99, 235, .06) 18.4% 18.8%, transparent 19.2% 44%, rgba(6, 182, 212, .06) 44.4% 44.8%, transparent 45.2%),
    repeating-linear-gradient(90deg, rgba(37, 99, 235, .035) 0 1px, transparent 1px 88px);
  opacity: .75;
  pointer-events: none;
}

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

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

.container {
  width: min(1220px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: linear-gradient(180deg, rgba(255, 255, 255, .96), rgba(255, 255, 255, .8));
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(229, 231, 235, .7);
  box-shadow: 0 12px 30px rgba(15, 23, 42, .04);
}

.nav {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 13px;
  font-weight: 800;
  letter-spacing: 0;
  min-width: 190px;
}

.brand-logo {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  object-fit: contain;
  background: #fff;
  border: 1px solid rgba(37, 99, 235, .12);
  box-shadow: 0 8px 18px rgba(37, 99, 235, .1);
  transition: transform .25s ease, box-shadow .25s ease;
}

.brand:hover .brand-logo {
  transform: translateY(-1px) scale(1.04);
  box-shadow: var(--glow-blue);
}

.brand small {
  display: block;
  color: var(--soft);
  font-size: 12px;
  font-weight: 500;
  line-height: 1.2;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 15px;
}

.nav-links a {
  position: relative;
  padding: 8px 12px;
  border-radius: 8px;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--blue);
  background: rgba(37, 99, 235, .06);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.menu-toggle {
  display: none;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 8px;
  width: 42px;
  height: 42px;
  font-size: 22px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 8px;
  border: 1px solid transparent;
  font-weight: 700;
  cursor: pointer;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:disabled {
  cursor: progress;
  opacity: .68;
  transform: none;
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--blue-deep), var(--blue) 48%, var(--cyan));
  box-shadow: 0 14px 28px rgba(37, 99, 235, .22);
  position: relative;
  overflow: hidden;
}

.btn-primary::after {
  content: "";
  position: absolute;
  inset: 0;
  transform: translateX(-120%);
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .36), transparent);
  transition: transform .55s ease;
}

.btn-primary:hover::after {
  transform: translateX(120%);
}

.btn-secondary {
  color: var(--blue);
  background: rgba(255, 255, 255, .82);
  border-color: rgba(37, 99, 235, .24);
}

.hero {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(115deg, rgba(37, 99, 235, .08) 0 1px, transparent 1px 34%),
    radial-gradient(circle at 18% 12%, rgba(6, 182, 212, .16), transparent 28%),
    radial-gradient(circle at 75% 18%, rgba(37, 99, 235, .14), transparent 32%),
    linear-gradient(180deg, #ffffff 0%, #f5f9ff 100%);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(37, 99, 235, .08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37, 99, 235, .08) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(180deg, #000 0%, transparent 78%);
  pointer-events: none;
  animation: gridFloat 12s linear infinite;
}

.hero::after {
  content: "";
  position: absolute;
  left: -20%;
  right: -20%;
  top: 16%;
  height: 220px;
  background:
    linear-gradient(100deg, transparent 0 25%, rgba(37, 99, 235, .16) 35%, rgba(6, 182, 212, .18) 50%, rgba(99, 102, 241, .13) 65%, transparent 76%),
    linear-gradient(100deg, transparent 0 42%, rgba(16, 185, 129, .08) 52%, transparent 64%);
  transform: skewY(-7deg);
  filter: blur(18px);
  opacity: .86;
  pointer-events: none;
  animation: lightSweep 8s ease-in-out infinite alternate;
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr .95fr;
  align-items: center;
  gap: 56px;
  min-height: 660px;
  padding: 72px 0 86px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border: 1px solid rgba(6, 182, 212, .28);
  background: rgba(255, 255, 255, .76);
  border-radius: 999px;
  color: #075985;
  font-weight: 700;
  font-size: 13px;
  box-shadow: 0 8px 20px rgba(6, 182, 212, .08);
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 6px rgba(6, 182, 212, .12);
}

h1,
h2,
h3 {
  line-height: 1.18;
  margin: 0;
  letter-spacing: 0;
}

h1 {
  font-size: clamp(38px, 5vw, 66px);
  margin-top: 22px;
  max-width: 780px;
  background: linear-gradient(115deg, #0f172a 0%, #1e40af 48%, #0891b2 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

h2 {
  font-size: clamp(28px, 3.4vw, 42px);
}

.hero p {
  font-size: 19px;
  color: var(--muted);
  max-width: 620px;
  margin: 22px 0 30px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-card {
  position: relative;
  border: 1px solid rgba(37, 99, 235, .16);
  border-radius: 20px;
  overflow: hidden;
  background: rgba(255, 255, 255, .72);
  box-shadow: 0 24px 70px rgba(30, 64, 175, .13);
  transform-style: preserve-3d;
}

.hero-card::before {
  content: "";
  position: absolute;
  inset: -1px;
  z-index: 1;
  background: linear-gradient(135deg, rgba(37, 99, 235, .42), transparent 30%, rgba(6, 182, 212, .42) 66%, transparent);
  opacity: .45;
  mix-blend-mode: screen;
  pointer-events: none;
}

.hero-card::after {
  content: "";
  position: absolute;
  inset: 18px;
  border: 1px solid rgba(255, 255, 255, .62);
  border-radius: 16px;
  pointer-events: none;
}

.hero-card img {
  width: 100%;
  aspect-ratio: 16 / 11;
  object-fit: cover;
  filter: saturate(1.08) contrast(1.04);
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid rgba(229, 231, 235, .72);
  background: rgba(255, 255, 255, .82);
  backdrop-filter: blur(10px);
  position: relative;
  z-index: 2;
}

.hero-metrics div {
  padding: 18px;
  border-right: 1px solid rgba(229, 231, 235, .72);
}

.hero-metrics div:last-child {
  border-right: 0;
}

.hero-metrics strong {
  display: block;
  color: var(--blue);
  font-size: 24px;
  line-height: 1.1;
  text-shadow: 0 0 18px rgba(37, 99, 235, .24);
}

.hero-metrics span {
  color: var(--soft);
  font-size: 13px;
}

.section {
  padding: 92px 0;
  position: relative;
}

.section.alt {
  background:
    radial-gradient(circle at 88% 18%, rgba(6, 182, 212, .08), transparent 26%),
    linear-gradient(180deg, var(--bg) 0%, #ffffff 100%);
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 34px;
}

.section-head p {
  margin: 12px 0 0;
  color: var(--muted);
  max-width: 660px;
}

.grid {
  display: grid;
  gap: 22px;
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

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

.card {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, .96), rgba(248, 250, 252, .92));
  border: 1px solid rgba(226, 232, 240, .96);
  border-radius: 8px;
  padding: 26px;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(12px);
}

.card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 4px;
  background: linear-gradient(90deg, var(--blue-deep), var(--blue), var(--cyan), var(--green));
  opacity: 0;
  transition: opacity .2s ease;
}

.card::after {
  content: "";
  position: absolute;
  inset: auto 18px 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(6, 182, 212, .52), transparent);
  opacity: .34;
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(37, 99, 235, .28);
  box-shadow: var(--shadow), var(--glow-cyan);
}

.card:hover::before {
  opacity: 1;
}

.icon {
  width: 44px;
  height: 44px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  color: #fff;
  font-weight: 900;
  background: linear-gradient(135deg, var(--blue-deep), var(--blue), var(--cyan));
  margin-bottom: 18px;
  box-shadow: 0 12px 24px rgba(37, 99, 235, .18);
  position: relative;
  overflow: hidden;
}

.icon::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent, rgba(255, 255, 255, .42), transparent);
  transform: translateX(-120%);
  animation: iconPulse 4.5s ease-in-out infinite;
}

.card h3 {
  font-size: 21px;
  margin-bottom: 10px;
}

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

.tag-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 18px;
}

.tag {
  color: #075985;
  background: #ecfeff;
  border: 1px solid rgba(6, 182, 212, .24);
  border-radius: 999px;
  padding: 5px 10px;
  font-size: 13px;
  font-weight: 700;
  box-shadow: 0 8px 20px rgba(6, 182, 212, .08);
}

.split {
  display: grid;
  grid-template-columns: .95fr 1.05fr;
  gap: 48px;
  align-items: center;
}

.panel {
  border: 1px solid rgba(226, 232, 240, .96);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, .96), rgba(248, 250, 252, .96));
  padding: 32px;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}

.panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(37, 99, 235, .055) 1px, transparent 1px),
    linear-gradient(rgba(6, 182, 212, .045) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: linear-gradient(180deg, #000, transparent 78%);
  pointer-events: none;
}

.panel > * {
  position: relative;
}

.steps {
  display: grid;
  gap: 14px;
}

.step {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 14px;
  align-items: start;
}

.step span {
  width: 42px;
  height: 42px;
  border-radius: 8px;
  background: linear-gradient(135deg, #eff6ff, #ecfeff);
  color: var(--blue);
  font-weight: 900;
  display: grid;
  place-items: center;
}

.page-hero {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(120deg, rgba(37, 99, 235, .08) 0 1px, transparent 1px 38%),
    radial-gradient(circle at 80% 15%, rgba(6, 182, 212, .18), transparent 28%),
    radial-gradient(circle at 10% 0%, rgba(37, 99, 235, .12), transparent 26%),
    linear-gradient(180deg, #fff, #f3f8ff);
  border-bottom: 1px solid var(--line);
  padding: 82px 0;
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(37, 99, 235, .06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37, 99, 235, .06) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(180deg, #000 0%, transparent 86%);
  pointer-events: none;
  animation: gridFloat 14s linear infinite;
}

.page-hero::after {
  content: "";
  position: absolute;
  left: -20%;
  right: -20%;
  top: 12%;
  height: 180px;
  background: linear-gradient(100deg, transparent 0 28%, rgba(37, 99, 235, .14) 40%, rgba(6, 182, 212, .16) 56%, transparent 72%);
  transform: skewY(-7deg);
  filter: blur(18px);
  opacity: .7;
  pointer-events: none;
  animation: lightSweep 9s ease-in-out infinite alternate;
}

.page-hero .container {
  position: relative;
}

.page-hero h1 {
  font-size: clamp(36px, 4vw, 54px);
}

.page-hero p {
  max-width: 760px;
  color: var(--muted);
  font-size: 18px;
  margin: 18px 0 0;
}

.list {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.list li {
  padding-left: 20px;
  position: relative;
  color: var(--muted);
}

.list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .78em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
}

.filter-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 26px;
}

.filter {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 999px;
  padding: 9px 14px;
  color: var(--muted);
  cursor: pointer;
  font-weight: 700;
  transition: all .2s ease;
}

.filter.active,
.filter:hover {
  border-color: rgba(37, 99, 235, .3);
  color: var(--blue);
  background: #eff6ff;
}

.job-card {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 18px;
  align-items: center;
}

.job-card h3 {
  color: var(--blue-deep);
}

.meta {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  color: var(--soft);
  font-size: 14px;
}

.form {
  display: grid;
  gap: 15px;
  margin-top: 18px;
}

.form input,
.form select,
.form textarea {
  width: 100%;
  min-height: 46px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px 14px;
  font: inherit;
  background: #fff;
  transition: border-color .2s ease, box-shadow .2s ease;
}

.form textarea {
  min-height: 124px;
  resize: vertical;
}

.form input:focus,
.form select:focus,
.form textarea:focus {
  outline: 2px solid rgba(37, 99, 235, .18);
  border-color: rgba(37, 99, 235, .6);
  box-shadow: var(--glow-blue);
}

.cta {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 92% 18%, rgba(6, 182, 212, .22), transparent 28%),
    linear-gradient(135deg, #eff6ff, #ecfeff);
  border: 1px solid rgba(37, 99, 235, .16);
  border-radius: 8px;
  padding: 38px;
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: center;
  box-shadow: var(--shadow-soft);
}

.cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(90deg, rgba(37, 99, 235, .08) 1px, transparent 1px);
  background-size: 38px 38px;
  opacity: .45;
  pointer-events: none;
}

.cta > * {
  position: relative;
}

.site-footer {
  background:
    radial-gradient(circle at 16% 0%, rgba(37, 99, 235, .32), transparent 28%),
    linear-gradient(180deg, #0f172a 0%, #08111f 100%);
  color: #e5e7eb;
  padding: 58px 0 28px;
  position: relative;
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(148, 163, 184, .08) 1px, transparent 1px),
    linear-gradient(rgba(148, 163, 184, .06) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(180deg, #000 0%, transparent 88%);
  pointer-events: none;
}

.site-footer .container {
  position: relative;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr repeat(3, 1fr);
  gap: 32px;
}

.site-footer h3,
.site-footer h4 {
  color: #fff;
  margin: 0 0 14px;
}

.site-footer a,
.site-footer p {
  color: #cbd5e1;
  margin: 0 0 8px;
}

.site-footer a:hover {
  color: #fff;
}

.copyright {
  border-top: 1px solid rgba(255, 255, 255, .12);
  margin-top: 34px;
  padding-top: 18px;
  color: #94a3b8;
  font-size: 13px;
}

@keyframes gridFloat {
  from {
    background-position: 0 0, 0 0;
  }
  to {
    background-position: 48px 48px, 48px 48px;
  }
}

@keyframes lightSweep {
  from {
    transform: translateX(-4%) skewY(-7deg);
  }
  to {
    transform: translateX(4%) skewY(-7deg);
  }
}

@keyframes iconPulse {
  0%, 55% {
    transform: translateX(-120%);
  }
  78%, 100% {
    transform: translateX(120%);
  }
}

@media (max-width: 980px) {
  .nav-links,
  .nav-actions .btn-secondary {
    display: none;
  }

  .menu-toggle {
    display: inline-grid;
    place-items: center;
  }

  .nav-links.open {
    display: grid;
    position: absolute;
    left: 20px;
    right: 20px;
    top: 72px;
    padding: 18px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: var(--shadow);
  }

  .hero-grid,
  .split,
  .grid-2 {
    grid-template-columns: 1fr;
  }

  .grid-4,
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-grid {
    min-height: auto;
    padding: 52px 0 64px;
  }

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

@media (max-width: 640px) {
  .container {
    width: min(100% - 28px, 1180px);
  }

  .nav {
    height: 66px;
  }

  .brand small,
  .nav-actions .btn-primary {
    display: none;
  }

  .nav-links.open {
    top: 66px;
  }

  .hero p,
  .page-hero p {
    font-size: 16px;
  }

  .section,
  .page-hero {
    padding: 58px 0;
  }

  .section-head,
  .cta {
    display: block;
  }

  .grid-4,
  .grid-3,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .hero-metrics {
    grid-template-columns: 1fr;
  }

  .hero-metrics div {
    border-right: 0;
    border-bottom: 1px solid rgba(229, 231, 235, .72);
  }

  .job-card {
    grid-template-columns: 1fr;
  }
}