:root {
  --bg: #0b1220;
  --bg-elevated: #121a2b;
  --ink: #eef2f8;
  --ink-muted: #9aa8bd;
  --ink-soft: #6d7c93;
  --accent: #e8b86a;
  --accent-soft: #f0d3a0;
  --line: rgba(238, 242, 248, 0.1);
  --glow-a: rgba(232, 184, 106, 0.28);
  --glow-b: rgba(88, 140, 200, 0.22);
  --font-sans: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", sans-serif;
  --font-serif: "Noto Serif SC", "Songti SC", serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --max: 1080px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(1200px 700px at 80% -10%, rgba(232, 184, 106, 0.12), transparent 55%),
    radial-gradient(900px 600px at -10% 30%, rgba(88, 140, 200, 0.1), transparent 50%),
    var(--bg);
  font-family: var(--font-sans);
  font-weight: 400;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

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

.grain {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 50;
  opacity: 0.045;
  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;
  top: 0;
  left: 0;
  right: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1.1rem clamp(1.25rem, 4vw, 2.5rem);
  backdrop-filter: blur(14px);
  background: rgba(11, 18, 32, 0.55);
  border-bottom: 1px solid transparent;
  transition: border-color 0.35s var(--ease), background 0.35s var(--ease);
}

.site-header.is-scrolled {
  border-bottom-color: var(--line);
  background: rgba(11, 18, 32, 0.82);
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.08em;
}

.logo-mark {
  width: 0.85rem;
  height: 0.85rem;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #fff6e4, var(--accent) 55%, #9a6b2e 100%);
  box-shadow: 0 0 18px var(--glow-a);
}

.nav {
  display: none;
  gap: 1.75rem;
  font-size: 0.92rem;
  color: var(--ink-muted);
}

.nav a {
  position: relative;
  transition: color 0.25s var(--ease);
}

.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.35rem;
  width: 100%;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease);
}

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

.nav a:hover::after {
  transform: scaleX(1);
}

.header-cta {
  font-size: 0.88rem;
  color: var(--bg);
  background: linear-gradient(135deg, var(--accent-soft), var(--accent));
  padding: 0.55rem 1rem;
  border-radius: 999px;
  font-weight: 500;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.header-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(232, 184, 106, 0.28);
}

.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 7rem 1.5rem 5rem;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(40px);
  animation: drift 14s ease-in-out infinite;
}

.hero-glow--a {
  width: min(55vw, 520px);
  height: min(55vw, 520px);
  top: 8%;
  right: 8%;
  background: var(--glow-a);
}

.hero-glow--b {
  width: min(45vw, 420px);
  height: min(45vw, 420px);
  bottom: 12%;
  left: 5%;
  background: var(--glow-b);
  animation-delay: -5s;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(238, 242, 248, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(238, 242, 248, 0.04) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 45%, black, transparent);
  opacity: 0.55;
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(100%, 820px);
  text-align: center;
}

.brand-kicker {
  margin: 0 0 1rem;
  color: var(--accent-soft);
  letter-spacing: 0.35em;
  font-size: 0.78rem;
  text-transform: none;
  opacity: 0;
  animation: rise 0.9s var(--ease) 0.1s forwards;
}

.brand-name {
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.55rem;
}

.brand-name__main {
  font-family: var(--font-serif);
  font-size: clamp(3.6rem, 12vw, 6.5rem);
  font-weight: 700;
  letter-spacing: 0.22em;
  line-height: 1;
  text-indent: 0.22em;
  background: linear-gradient(180deg, #fff8ea 10%, var(--accent) 90%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  opacity: 0;
  animation: rise 1s var(--ease) 0.2s forwards;
}

.brand-name__sub {
  font-family: var(--font-serif);
  font-size: clamp(1.05rem, 3.2vw, 1.55rem);
  font-weight: 500;
  letter-spacing: 0.28em;
  text-indent: 0.28em;
  color: var(--ink);
  opacity: 0;
  animation: rise 1s var(--ease) 0.35s forwards;
}

.hero-lead {
  margin: 1.6rem auto 0;
  max-width: 28em;
  color: var(--ink-muted);
  font-size: clamp(1rem, 2.4vw, 1.15rem);
  font-weight: 300;
  opacity: 0;
  animation: rise 1s var(--ease) 0.5s forwards;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.85rem;
  margin-top: 2.2rem;
  opacity: 0;
  animation: rise 1s var(--ease) 0.65s forwards;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.85rem;
  padding: 0.7rem 1.4rem;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 500;
  transition: transform 0.25s var(--ease), background 0.25s var(--ease), border-color 0.25s var(--ease);
}

.btn--primary {
  color: var(--bg);
  background: linear-gradient(135deg, var(--accent-soft), var(--accent));
}

.btn--primary:hover {
  transform: translateY(-2px);
}

.btn--ghost {
  color: var(--ink);
  border: 1px solid var(--line);
  background: rgba(238, 242, 248, 0.03);
}

.btn--ghost:hover {
  border-color: rgba(232, 184, 106, 0.45);
  transform: translateY(-2px);
}

.hero-scroll {
  position: absolute;
  bottom: 1.8rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.55rem;
  color: var(--ink-soft);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  opacity: 0;
  animation: rise 1s var(--ease) 1s forwards;
}

.hero-scroll i {
  width: 1px;
  height: 2.2rem;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: pulse-line 2s ease-in-out infinite;
}

.section {
  padding: clamp(4.5rem, 10vw, 7rem) 1.5rem;
}

.section-inner {
  width: min(100%, var(--max));
  margin: 0 auto;
}

.eyebrow {
  margin: 0 0 0.85rem;
  color: var(--accent);
  font-size: 0.8rem;
  letter-spacing: 0.28em;
}

.section h2 {
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(1.7rem, 4vw, 2.35rem);
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.35;
}

.section-lead {
  margin: 1.1rem 0 0;
  max-width: 40rem;
  color: var(--ink-muted);
  font-weight: 300;
  font-size: 1.02rem;
}

.inline-link {
  color: var(--accent-soft);
  border-bottom: 1px solid rgba(240, 211, 160, 0.35);
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.inline-link:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.about {
  border-top: 1px solid var(--line);
}

.facts {
  display: grid;
  gap: 1.25rem;
  margin: 2.5rem 0 0;
  padding: 0;
}

.facts > div {
  padding-top: 1.15rem;
  border-top: 1px solid var(--line);
}

.facts dt {
  margin: 0 0 0.35rem;
  color: var(--ink-soft);
  font-size: 0.82rem;
  letter-spacing: 0.12em;
}

.facts dd {
  margin: 0;
  font-size: 1.02rem;
  color: var(--ink);
}

.services {
  background:
    linear-gradient(180deg, transparent, rgba(18, 26, 43, 0.65), transparent);
}

.service-list {
  list-style: none;
  margin: 2.6rem 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.service-item {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto auto;
  column-gap: 1.1rem;
  padding: 1.55rem 0;
  border-top: 1px solid var(--line);
  transition: background 0.3s var(--ease), padding-left 0.3s var(--ease);
}

.service-item:last-child {
  border-bottom: 1px solid var(--line);
}

.service-item:hover {
  padding-left: 0.4rem;
}

.service-index {
  grid-row: 1 / span 2;
  align-self: start;
  padding-top: 0.25rem;
  color: var(--accent);
  font-family: var(--font-serif);
  font-size: 0.95rem;
  letter-spacing: 0.08em;
}

.service-item h3 {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 500;
  letter-spacing: 0.04em;
}

.service-item p {
  grid-column: 2;
  margin: 0.45rem 0 0;
  color: var(--ink-muted);
  font-weight: 300;
  font-size: 0.96rem;
}

.process-list {
  list-style: none;
  margin: 2.4rem 0 0;
  padding: 0;
  display: grid;
  gap: 1rem;
  counter-reset: step;
}

.process-list li {
  counter-increment: step;
  display: grid;
  gap: 0.25rem;
  padding: 1.2rem 1.2rem 1.2rem 3.4rem;
  position: relative;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: rgba(238, 242, 248, 0.02);
}

.process-list li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 1.1rem;
  top: 1.25rem;
  color: var(--accent);
  font-family: var(--font-serif);
  font-size: 0.9rem;
}

.process-list strong {
  font-weight: 500;
  letter-spacing: 0.04em;
}

.process-list span {
  color: var(--ink-muted);
  font-size: 0.92rem;
  font-weight: 300;
}

.contact {
  border-top: 1px solid var(--line);
}

.contact-inner {
  display: grid;
  gap: 2.2rem;
}

.contact-card {
  padding: 1.6rem 1.4rem;
  border: 1px solid rgba(232, 184, 106, 0.28);
  border-radius: 1.25rem;
  background:
    linear-gradient(160deg, rgba(232, 184, 106, 0.1), transparent 45%),
    var(--bg-elevated);
}

.contact-card__label {
  margin: 0;
  color: var(--accent-soft);
  font-size: 0.78rem;
  letter-spacing: 0.22em;
}

.contact-card__name {
  margin: 0.9rem 0 0;
  font-family: var(--font-serif);
  font-size: 1.2rem;
  line-height: 1.45;
}

.contact-card__type {
  margin: 0.25rem 0 0;
  color: var(--ink-muted);
  font-size: 0.92rem;
}

.contact-meta {
  list-style: none;
  margin: 1.4rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.85rem;
}

.contact-meta li {
  display: grid;
  gap: 0.15rem;
  padding-top: 0.85rem;
  border-top: 1px solid var(--line);
}

.contact-meta span {
  color: var(--ink-soft);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
}

.contact-meta a,
.contact-meta em {
  font-style: normal;
  color: var(--ink);
}

.contact-meta a:hover {
  color: var(--accent-soft);
}

.contact-note {
  margin: 1.2rem 0 0;
  color: var(--ink-soft);
  font-size: 0.85rem;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 2rem 1.5rem 2.5rem;
}

.footer-inner {
  width: min(100%, var(--max));
  margin: 0 auto;
  display: grid;
  gap: 1.2rem;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.footer-brand strong {
  display: block;
  font-family: var(--font-serif);
  font-weight: 700;
  letter-spacing: 0.06em;
}

.footer-brand p {
  margin: 0.15rem 0 0;
  color: var(--ink-soft);
  font-size: 0.82rem;
}

.footer-copy {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.82rem;
}

.footer-meta {
  display: grid;
  gap: 0.45rem;
  justify-items: start;
}

.beian {
  color: var(--ink-soft);
  font-size: 0.82rem;
  transition: color 0.25s var(--ease);
}

.beian:hover {
  color: var(--accent-soft);
}

@media (min-width: 720px) {
  .footer-meta {
    justify-items: end;
    text-align: right;
  }
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}

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

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes drift {
  0%,
  100% {
    transform: translate(0, 0) scale(1);
  }
  50% {
    transform: translate(-18px, 14px) scale(1.06);
  }
}

@keyframes pulse-line {
  0%,
  100% {
    opacity: 0.35;
    transform: scaleY(0.75);
    transform-origin: top;
  }
  50% {
    opacity: 1;
    transform: scaleY(1);
  }
}

@media (min-width: 720px) {
  .nav {
    display: flex;
  }

  .facts {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
  }

  .facts > div {
    padding-top: 0;
    border-top: none;
    padding-left: 1.2rem;
    border-left: 1px solid var(--line);
  }

  .facts > div:first-child {
    padding-left: 0;
    border-left: none;
  }

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

  .contact-inner {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: end;
    gap: 3rem;
  }

  .footer-inner {
    grid-template-columns: 1fr auto;
    align-items: center;
  }
}

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

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

  .reveal {
    opacity: 1;
    transform: none;
  }
}