:root {
  --ink: #071018;
  --sand: #e8dfd0;
  --sand-dim: rgba(232, 223, 208, 0.7);
  --sand-mute: rgba(232, 223, 208, 0.48);
  --gold: #c6a15b;
  --gold-bright: #d6b56a;
  --line: rgba(232, 223, 208, 0.14);
  --font: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --header-h: 4.25rem;
  --page-pad: clamp(1.25rem, 4.5vw, 3.75rem);
  --content: min(1080px, calc(100% - 2 * var(--page-pad)));
  --measure: 34rem;
  --space-1: 0.5rem;
  --space-2: 0.85rem;
  --space-3: 1.25rem;
  --space-4: 2rem;
  --space-5: 3rem;
  --space-6: clamp(4rem, 9vw, 6.5rem);
  --fs-xs: 0.75rem;
  --fs-sm: 0.875rem;
  --fs-base: 1rem;
  --fs-md: 1.0625rem;
  --fs-lg: clamp(1.15rem, 2vw, 1.25rem);
  --fs-xl: clamp(1.55rem, 3.2vw, 2.05rem);
  --fs-2xl: clamp(1.75rem, 3.6vw, 2.35rem);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--sand);
  background:
    radial-gradient(1100px 640px at 82% -8%, rgba(198, 161, 91, 0.12), transparent 55%),
    radial-gradient(820px 560px at 0% 18%, rgba(52, 94, 118, 0.24), transparent 50%),
    linear-gradient(180deg, #050b11 0%, var(--ink) 38%, #09131c 100%);
  font-family: var(--font);
  font-size: var(--fs-base);
  font-weight: 400;
  line-height: 1.75;
  letter-spacing: 0.02em;
  word-break: keep-all;
  overflow-wrap: normal;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

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

button,
input,
textarea {
  font: inherit;
  color: inherit;
}

.noise {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 50;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 40;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--page-pad);
  backdrop-filter: blur(14px);
  background: linear-gradient(180deg, rgba(7, 16, 24, 0.78), rgba(7, 16, 24, 0.28));
  border-bottom: 1px solid transparent;
  transition: border-color 0.4s var(--ease), background 0.4s var(--ease);
}

.site-header.is-scrolled {
  border-bottom-color: var(--line);
  background: rgba(7, 16, 24, 0.88);
}

.logo {
  display: inline-flex;
  align-items: center;
  line-height: 0;
}

.logo-img {
  width: auto;
  height: 1.45rem;
  max-width: min(40vw, 8.75rem);
}

.nav {
  display: none;
  align-items: center;
  gap: 1.75rem;
}

.nav a {
  font-size: var(--fs-sm);
  letter-spacing: 0.08em;
  color: var(--sand-dim);
  transition: color 0.3s var(--ease);
}

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

.nav-cta {
  padding: 0.5rem 1rem;
  border: 1px solid rgba(198, 161, 91, 0.42);
  color: var(--gold-bright) !important;
}

.nav-cta:hover,
.nav-cta:focus-visible {
  border-color: var(--gold-bright);
  background: rgba(198, 161, 91, 0.08);
}

.menu-btn {
  width: 2.5rem;
  height: 2.5rem;
  border: 0;
  background: transparent;
  display: grid;
  place-content: center;
  gap: 0.4rem;
  cursor: pointer;
}

.menu-btn span {
  display: block;
  width: 1.3rem;
  height: 1.5px;
  background: var(--sand);
  transition: transform 0.3s var(--ease);
}

.menu-btn[aria-expanded="true"] span:first-child {
  transform: translateY(3.5px) rotate(45deg);
}

.menu-btn[aria-expanded="true"] span:last-child {
  transform: translateY(-3.5px) rotate(-45deg);
}

.mobile-nav {
  position: fixed;
  inset: var(--header-h) 0 auto;
  z-index: 39;
  display: grid;
  gap: 0.15rem;
  padding: 0.75rem var(--page-pad) 1.25rem;
  background: rgba(7, 16, 24, 0.96);
  border-bottom: 1px solid var(--line);
}

.mobile-nav[hidden] {
  display: none;
}

.mobile-nav a {
  padding: 0.85rem 0;
  font-size: var(--fs-md);
  border-bottom: 1px solid rgba(232, 223, 208, 0.08);
}

.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  align-items: end;
  overflow: hidden;
}

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

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 40%;
  transform: scale(1.06);
  animation: hero-drift 18s var(--ease) infinite alternate;
}

.hero-veil {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(5, 11, 17, 0.9) 0%, rgba(5, 11, 17, 0.58) 46%, rgba(5, 11, 17, 0.28) 100%),
    linear-gradient(0deg, rgba(5, 11, 17, 0.92) 0%, rgba(5, 11, 17, 0.32) 45%, rgba(5, 11, 17, 0.42) 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  width: var(--content);
  margin: 0 auto;
  padding: calc(var(--header-h) + 3.5rem) 0 6.5rem;
  display: grid;
  gap: var(--space-3);
}

.brand-lockup {
  margin: 0;
  line-height: 0;
  filter: drop-shadow(0 16px 36px rgba(0, 0, 0, 0.38));
}

.brand-lockup img {
  width: min(100%, 22rem);
  height: auto;
}

.hero h1 {
  margin: 0;
  max-width: 100%;
  font-size: var(--fs-xl);
  font-weight: 500;
  line-height: 1.55;
  letter-spacing: 0.06em;
  color: rgba(232, 223, 208, 0.96);
  word-break: keep-all;
  overflow-wrap: normal;
}

.hero-lead {
  margin: 0;
  width: min(100%, 34rem);
  font-size: var(--fs-md);
  line-height: 1.85;
  color: var(--sand-dim);
  font-weight: 300;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.35rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.85rem;
  padding: 0.7rem 1.35rem;
  border: 1px solid transparent;
  cursor: pointer;
  font-size: var(--fs-sm);
  letter-spacing: 0.1em;
  transition: transform 0.3s var(--ease), background 0.3s var(--ease), border-color 0.3s var(--ease),
    color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

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

.btn-primary {
  background: linear-gradient(135deg, #e4c67a 0%, #c6a15b 48%, #a9843d 100%);
  color: #15110a;
  font-weight: 600;
  box-shadow: 0 10px 28px rgba(166, 122, 42, 0.26);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: linear-gradient(135deg, #efd48f 0%, #d2b06a 48%, #b89248 100%);
  box-shadow: 0 14px 32px rgba(166, 122, 42, 0.36);
}

.btn-ghost {
  border-color: rgba(232, 223, 208, 0.32);
  color: var(--sand);
  background: rgba(7, 16, 24, 0.22);
}

.btn-ghost:hover,
.btn-ghost:focus-visible {
  border-color: rgba(232, 223, 208, 0.65);
  background: rgba(7, 16, 24, 0.42);
}

.hero-scroll {
  position: absolute;
  left: var(--page-pad);
  bottom: 1.5rem;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--sand-mute);
  font-size: var(--fs-xs);
  letter-spacing: 0.2em;
}

.hero-scroll i {
  display: block;
  width: 1px;
  height: 2.4rem;
  background: linear-gradient(180deg, rgba(198, 161, 91, 0.9), transparent);
  transform-origin: top;
  animation: scroll-line 2.2s ease-in-out infinite;
}

.section {
  width: var(--content);
  margin: 0 auto;
  padding: var(--space-6) 0;
}

.section-head {
  max-width: var(--measure);
  margin-bottom: var(--space-5);
  display: grid;
  gap: var(--space-2);
}

.eyebrow {
  margin: 0;
  color: var(--gold);
  font-size: var(--fs-xs);
  font-weight: 500;
  letter-spacing: 0.28em;
}

.section h2,
.contact-panel h2 {
  margin: 0;
  width: min(100%, 28rem);
  font-size: var(--fs-2xl);
  font-weight: 500;
  line-height: 1.45;
  letter-spacing: 0.04em;
  text-wrap: balance;
}

.section-lead {
  margin: 0;
  width: min(100%, var(--measure));
  color: var(--sand-dim);
  font-size: var(--fs-md);
  font-weight: 300;
  line-height: 1.85;
}

.capability-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.capability-list li {
  display: grid;
  grid-template-columns: 3.25rem minmax(0, 1fr);
  column-gap: 1rem;
  align-items: start;
  padding: 1.45rem 0;
  border-bottom: 1px solid var(--line);
  transition: background 0.35s var(--ease), padding-left 0.35s var(--ease);
}

.capability-list li:hover {
  background: linear-gradient(90deg, rgba(198, 161, 91, 0.06), transparent 58%);
  padding-left: 0.4rem;
}

.cap-index {
  color: var(--gold);
  font-size: var(--fs-sm);
  font-weight: 500;
  letter-spacing: 0.12em;
  line-height: 1.7;
  padding-top: 0.15rem;
}

.capability-list h3 {
  margin: 0 0 0.4rem;
  font-size: var(--fs-lg);
  font-weight: 500;
  letter-spacing: 0.04em;
  line-height: 1.5;
}

.capability-list p {
  margin: 0;
  width: min(100%, var(--measure));
  color: var(--sand-dim);
  font-size: var(--fs-base);
  font-weight: 300;
  line-height: 1.8;
}

.coverage {
  display: grid;
  gap: var(--space-4);
  align-items: center;
}

.coverage-visual {
  position: relative;
  overflow: hidden;
  min-height: 260px;
}

.coverage-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 42%, rgba(7, 16, 24, 0.5));
  pointer-events: none;
}

.coverage-visual img {
  width: 100%;
  height: 100%;
  min-height: 260px;
  object-fit: cover;
  filter: saturate(0.88) contrast(1.05);
}

.coverage-copy {
  display: grid;
  gap: var(--space-2);
  max-width: var(--measure);
}

.coverage-copy .section-lead {
  margin-top: 0.15rem;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.85rem;
  margin: 1.1rem 0 0;
}

.metrics div {
  padding-top: 0.9rem;
  border-top: 1px solid var(--line);
}

.metrics dt {
  margin: 0 0 0.4rem;
  color: var(--sand-mute);
  font-size: var(--fs-xs);
  letter-spacing: 0.12em;
}

.metrics dd {
  margin: 0;
  font-size: clamp(1.45rem, 3vw, 1.95rem);
  font-weight: 500;
  letter-spacing: 0.02em;
  line-height: 1.2;
  color: var(--gold-bright);
}

.process .steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  counter-reset: step;
}

.process .steps li {
  display: grid;
  gap: 0.45rem;
  padding: 1.35rem 0;
  border-top: 1px solid var(--line);
  counter-increment: step;
}

.process .steps li:last-child {
  border-bottom: 1px solid var(--line);
}

.process .steps li::before {
  content: "0" counter(step);
  color: var(--gold);
  font-size: var(--fs-xs);
  font-weight: 500;
  letter-spacing: 0.16em;
}

.process .steps strong {
  font-size: var(--fs-lg);
  font-weight: 500;
  letter-spacing: 0.04em;
  line-height: 1.5;
}

.process .steps span {
  color: var(--sand-dim);
  font-size: var(--fs-base);
  font-weight: 300;
  line-height: 1.8;
  width: min(100%, 22rem);
}

.contact {
  padding-bottom: clamp(4.5rem, 11vw, 7rem);
}

.contact-panel {
  width: min(720px, 100%);
  margin: 0 auto;
  padding: clamp(1.6rem, 3.5vw, 2.5rem);
  display: grid;
  gap: var(--space-2);
  background:
    linear-gradient(160deg, rgba(198, 161, 91, 0.07), transparent 42%),
    linear-gradient(180deg, rgba(14, 26, 36, 0.9), rgba(10, 18, 26, 0.95));
  border: 1px solid var(--line);
}

.contact-panel .section-lead {
  margin: 0;
}

.contact-form {
  display: grid;
  gap: 0.95rem;
  margin-top: 0.85rem;
}

.contact-form label {
  display: grid;
  gap: 0.4rem;
}

.contact-form label span {
  font-size: var(--fs-xs);
  letter-spacing: 0.16em;
  color: var(--sand-mute);
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid rgba(232, 223, 208, 0.16);
  background: rgba(5, 11, 17, 0.55);
  padding: 0.8rem 0.9rem;
  outline: none;
  line-height: 1.5;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: rgba(198, 161, 91, 0.65);
  background: rgba(5, 11, 17, 0.75);
}

.contact-form textarea {
  resize: vertical;
  min-height: 6.5rem;
}

.contact-form .btn {
  justify-self: start;
  margin-top: 0.2rem;
}

.form-note {
  min-height: 1.4rem;
  margin: 0.35rem 0 0;
  color: var(--gold-bright);
  font-size: var(--fs-sm);
}

.site-footer {
  display: flex;
  flex-direction: column;
  gap: 1.35rem;
  width: var(--content);
  margin: 0 auto;
  padding: 1.85rem 0 2.25rem;
  border-top: 1px solid var(--line);
  color: var(--sand-dim);
}

.footer-brand {
  display: grid;
  gap: 0.45rem;
}

.footer-logo {
  width: auto;
  height: 1.45rem;
  margin-bottom: 0.15rem;
}

.footer-brand p,
.footer-meta p {
  margin: 0;
  font-size: var(--fs-sm);
  line-height: 1.7;
  letter-spacing: 0.03em;
}

.footer-company {
  color: var(--sand-mute);
}

.footer-meta {
  display: grid;
  gap: 0.2rem;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.85s var(--ease), transform 0.85s var(--ease);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

@keyframes hero-drift {
  from {
    transform: scale(1.06) translate3d(0, 0, 0);
  }
  to {
    transform: scale(1.12) translate3d(-1.5%, -1%, 0);
  }
}

@keyframes scroll-line {
  0%,
  100% {
    transform: scaleY(0.35);
    opacity: 0.35;
  }
  50% {
    transform: scaleY(1);
    opacity: 1;
  }
}

@media (min-width: 768px) {
  .nav {
    display: flex;
  }

  .menu-btn,
  .mobile-nav {
    display: none !important;
  }

  .brand-lockup img {
    width: min(100%, 24rem);
  }

  .hero-content {
    gap: 1.15rem;
    padding-bottom: 7rem;
  }

  .capability-list li {
    grid-template-columns: 3.75rem minmax(0, 1fr);
    column-gap: 1.5rem;
    padding: 1.7rem 0;
  }

  .coverage {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 3.25rem;
  }

  .coverage-visual,
  .coverage-visual img {
    min-height: 440px;
  }

  .process .steps {
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    border-top: 1px solid var(--line);
  }

  .process .steps li {
    border-top: 0;
    border-bottom: 0;
    border-left: 1px solid var(--line);
    padding: 1.5rem 0 0.25rem 1.5rem;
  }

  .process .steps li:first-child {
    border-left: 0;
    padding-left: 0;
  }

  .contact-form {
    grid-template-columns: 1fr 1fr;
  }

  .contact-form .full,
  .contact-form .btn {
    grid-column: 1 / -1;
  }

  .site-footer {
    flex-direction: row;
    align-items: flex-end;
    justify-content: space-between;
  }

  .footer-meta {
    text-align: right;
  }
}

@media (min-width: 900px) {
  .hero h1 {
    white-space: nowrap;
  }
}

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

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

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

  .hero-media img {
    transform: none;
  }
}