:root {
  color-scheme: dark;
  --bg: #080b0d;
  --panel: #11171a;
  --panel-2: #161d20;
  --text: #f4f7f5;
  --muted: #a9b4b2;
  --line: rgba(255, 255, 255, 0.12);
  --accent: #f6a11a;
  --accent-2: #65d18e;
  --steel: #758391;
  --danger: #d44836;
  font-family:
    "Microsoft YaHei",
    "PingFang SC",
    "Noto Sans CJK SC",
    Arial,
    sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--bg);
  color: var(--text);
}

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

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 10;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 24px;
  padding: 18px clamp(20px, 4vw, 64px);
  background: rgba(8, 11, 13, 0.72);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}

.brand,
.nav,
.hero-actions,
.hero-stats,
.plan-row,
.contact-panel {
  display: flex;
  align-items: center;
}

.brand {
  gap: 12px;
  font-weight: 800;
  letter-spacing: 0;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  color: #0a0d0f;
  background: var(--accent);
  border: 1px solid rgba(255, 255, 255, 0.28);
  font-weight: 900;
}

.nav {
  justify-content: center;
  gap: clamp(18px, 3vw, 38px);
  color: var(--muted);
  font-size: 14px;
}

.nav a,
.header-action,
.button,
.contact-link {
  transition:
    color 180ms ease,
    border-color 180ms ease,
    background 180ms ease,
    transform 180ms ease;
}

.nav a:hover {
  color: var(--text);
}

.header-action {
  justify-self: end;
  padding: 11px 18px;
  color: #0b0c0d;
  background: var(--accent);
  border: 1px solid rgba(255, 255, 255, 0.22);
  font-weight: 800;
}

.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 130px clamp(20px, 6vw, 88px) 64px;
}

.hero-media,
.hero-shade {
  position: absolute;
  inset: 0;
}

.hero-media {
  background:
    linear-gradient(90deg, rgba(8, 11, 13, 0.92), rgba(8, 11, 13, 0.35) 52%, rgba(8, 11, 13, 0.12)),
    url("assets/hero-tactical.png") center / cover no-repeat;
  transform: scale(1.02);
}

.hero-shade {
  background:
    linear-gradient(180deg, rgba(8, 11, 13, 0) 65%, #080b0d 100%),
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.035) 0 1px, transparent 1px 4px);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(720px, 100%);
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 18px;
  font-size: clamp(56px, 9vw, 112px);
  line-height: 0.96;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(30px, 5vw, 58px);
  line-height: 1.05;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 12px;
  font-size: 22px;
  line-height: 1.25;
}

.hero-copy {
  max-width: 660px;
  color: #d8dfdd;
  font-size: clamp(17px, 2.2vw, 22px);
  line-height: 1.75;
}

.hero-actions {
  flex-wrap: wrap;
  gap: 14px;
  margin: 32px 0 36px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  border: 1px solid var(--line);
  font-weight: 900;
}

.button:hover,
.header-action:hover,
.contact-link:hover {
  transform: translateY(-2px);
}

.button.primary {
  color: #0b0c0d;
  background: var(--accent);
  border-color: rgba(255, 255, 255, 0.22);
}

.button.ghost {
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(12px);
}

.hero-stats {
  flex-wrap: wrap;
  gap: 12px;
}

.hero-stats div {
  min-width: 150px;
  padding: 16px 18px;
  background: rgba(11, 15, 17, 0.72);
  border: 1px solid var(--line);
}

.hero-stats dt {
  color: var(--accent-2);
  font-size: 28px;
  font-weight: 900;
}

.hero-stats dd {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.section {
  scroll-margin-top: 88px;
  padding: 92px clamp(20px, 6vw, 88px);
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(280px, 0.8fr);
  gap: 28px 56px;
  align-items: end;
  margin-bottom: 34px;
}

.section-head .eyebrow,
.section-head h2 {
  grid-column: 1;
}

.section-head p:last-child {
  grid-column: 2;
  grid-row: 1 / span 2;
  color: var(--muted);
  line-height: 1.8;
}

.section-head .eyebrow:last-child,
.section-head h2:last-child {
  grid-column: 1 / -1;
}

.section-head.compact {
  display: block;
}

.service-band {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(180deg, #080b0d, #0f1517 48%, #080b0d),
    radial-gradient(circle at 84% 18%, rgba(246, 161, 26, 0.16), transparent 34%),
    radial-gradient(circle at 10% 72%, rgba(101, 209, 142, 0.08), transparent 30%);
}

.service-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: linear-gradient(180deg, transparent, #000 18%, #000 78%, transparent);
  pointer-events: none;
}

.service-band > * {
  position: relative;
  z-index: 1;
}

.business-stack {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.business-line {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-height: 420px;
  padding: 26px;
  overflow: hidden;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.035), transparent 42%),
    var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 22px 58px rgba(0, 0, 0, 0.28);
}

.business-line.featured {
  background:
    linear-gradient(135deg, rgba(246, 161, 26, 0.2), transparent 42%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.045), transparent 45%),
    var(--panel-2);
  border-color: rgba(246, 161, 26, 0.42);
}

.business-line::after {
  content: "";
  position: absolute;
  right: -42px;
  top: -42px;
  width: 160px;
  height: 160px;
  border: 1px solid rgba(246, 161, 26, 0.14);
  transform: rotate(45deg);
}

.muted-line {
  background:
    linear-gradient(135deg, rgba(101, 209, 142, 0.11), transparent 36%),
    rgba(255, 255, 255, 0.045);
}

.line-copy {
  flex: 0 0 auto;
  padding-top: 2px;
}

.line-index {
  position: absolute;
  top: 26px;
  left: 26px;
  display: grid;
  width: 62px;
  height: 62px;
  place-items: center;
  color: #0b0c0d;
  background: linear-gradient(135deg, #ffbd41, var(--accent));
  border: 1px solid rgba(255, 255, 255, 0.22);
  font-size: 18px;
  font-weight: 900;
  box-shadow: 0 10px 24px rgba(246, 161, 26, 0.2);
}

.business-line:not(.featured) .line-index {
  color: var(--accent);
  background: rgba(246, 161, 26, 0.1);
  border: 1px solid rgba(246, 161, 26, 0.42);
}

.line-label {
  display: inline-flex;
  min-height: 34px;
  align-items: center;
  width: fit-content;
  margin: 12px 0 26px 78px;
  padding: 0 12px;
  color: var(--accent-2);
  background: rgba(101, 209, 142, 0.09);
  border: 1px solid rgba(101, 209, 142, 0.22);
  font-size: 13px;
  font-weight: 900;
}

.business-line p,
.steps p,
.contact p,
.disclaimer {
  color: var(--muted);
  line-height: 1.8;
}

.business-line h3 {
  max-width: 560px;
  margin-bottom: 14px;
  font-size: clamp(24px, 2.45vw, 34px);
  line-height: 1.18;
}

.business-line p:not(.line-label) {
  margin: 0;
  max-width: 620px;
  font-size: 15px;
}

.line-panel {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-self: end;
  margin-top: 8px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.line-panel span {
  padding: 9px 11px;
  color: #fdf5e6;
  background: rgba(246, 161, 26, 0.12);
  border: 1px solid rgba(246, 161, 26, 0.35);
  font-size: 13px;
  font-weight: 800;
}

.line-checks {
  margin-top: 8px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.plan-row {
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.plan-row span {
  padding: 10px 12px;
  color: #fdf5e6;
  background: rgba(246, 161, 26, 0.12);
  border: 1px solid rgba(246, 161, 26, 0.35);
  font-size: 14px;
  font-weight: 800;
}

.price-list {
  display: grid;
  gap: 12px;
  margin-top: 8px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.price-list div {
  display: grid;
  grid-template-columns: 78px minmax(0, 1fr);
  gap: 12px;
  align-items: center;
  padding: 15px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--line);
}

.price-list strong {
  margin-bottom: 0;
  color: var(--accent);
  font-size: 28px;
}

.price-list span {
  color: #d6dfdc;
  line-height: 1.45;
}

.price-list small {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.check-list {
  display: grid;
  gap: 12px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 22px;
  color: #d6dfdc;
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 8px;
  height: 8px;
  background: var(--accent-2);
}

.process {
  background: #0b0f11;
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.steps article {
  padding: 26px;
  min-height: 240px;
  border-left: 3px solid var(--accent);
  background: rgba(255, 255, 255, 0.045);
}

.steps span {
  display: block;
  margin-bottom: 42px;
  color: var(--steel);
  font-size: 13px;
  font-weight: 900;
}

.contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 480px);
  gap: 32px;
  align-items: center;
  padding: 82px clamp(20px, 6vw, 88px);
  background: #12191b;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.contact-panel {
  flex-direction: column;
  align-items: stretch;
  gap: 12px;
}

.contact-link {
  padding: 18px 20px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--line);
  color: #dfe7e4;
  font-weight: 800;
}

.contact-link.strong {
  color: #0b0c0d;
  background: var(--accent);
}

.disclaimer {
  max-width: 1080px;
  margin: 0 auto;
  padding: 28px 20px 42px;
  font-size: 13px;
  text-align: center;
}

@media (max-width: 960px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .nav {
    display: none;
  }

  .section-head,
  .steps,
  .contact {
    grid-template-columns: 1fr;
  }

  .steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .business-stack {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .section-head .eyebrow,
  .section-head h2,
  .section-head p:last-child {
    grid-column: auto;
    grid-row: auto;
  }
}

@media (max-width: 620px) {
  .site-header {
    padding: 12px 16px;
  }

  .brand span:last-child {
    max-width: 128px;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
  }

  .brand-mark {
    width: 38px;
    height: 38px;
  }

  .header-action {
    padding: 10px 12px;
    font-size: 13px;
  }

  .hero {
    min-height: 900px;
    padding: 112px 18px 50px;
    align-items: flex-start;
  }

  .hero-media {
    background:
      linear-gradient(180deg, rgba(8, 11, 13, 0.94), rgba(8, 11, 13, 0.48) 58%, #080b0d),
      url("assets/hero-tactical.png") 58% center / cover no-repeat;
  }

  .button,
  .hero-actions {
    width: 100%;
  }

  .hero-stats div,
  .business-line,
  .steps article {
    width: 100%;
  }

  .business-stack {
    grid-template-columns: 1fr;
  }

  .steps {
    grid-template-columns: 1fr;
  }

  .business-line {
    min-height: auto;
    padding: 24px;
  }

  .business-line p:not(.line-label) {
    margin-top: 64px;
  }

  .price-list div {
    grid-template-columns: 1fr;
  }

  .section,
  .contact {
    padding: 64px 18px;
  }
}