:root {
  --ink: #0f2f2b;
  --ink-soft: #1f5c52;
  --mist: #e7f1ee;
  --paper: #f7fbf9;
  --line: rgba(15, 47, 43, 0.12);
  --accent: #1f7a6b;
  --accent-deep: #14574c;
  --text: #163430;
  --muted: #4d6a64;
  --header-h: 4.5rem;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--paper);
  line-height: 1.7;
  overflow-x: hidden;
}

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

.site-header {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
  padding: 0 clamp(1.25rem, 4vw, 3.5rem);
  color: #f4faf8;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-family: "Noto Serif SC", serif;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.brand-mark__glyph {
  width: 0.85rem;
  height: 0.85rem;
  border-radius: 2px;
  background: linear-gradient(145deg, #9fd0c5, #f4faf8);
  transform: rotate(12deg);
}

.site-nav {
  display: flex;
  gap: 1.5rem;
  font-size: 0.95rem;
  color: rgba(244, 250, 248, 0.82);
}

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

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.35rem;
  width: 100%;
  height: 1px;
  background: #f4faf8;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease);
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: #fff;
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
  transform: scaleX(1);
}

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: flex-end;
  padding: calc(var(--header-h) + 2rem) clamp(1.25rem, 4vw, 3.5rem) clamp(3.5rem, 8vw, 6rem);
  color: #f4faf8;
  overflow: hidden;
}

.hero__media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__art {
  width: 100%;
  height: 100%;
  display: block;
}

.hero__structure {
  animation: rise-in 1.2s var(--ease) both;
}

.hero__copy {
  position: relative;
  z-index: 1;
  max-width: 42rem;
}

.hero__eyebrow {
  margin: 0 0 1rem;
  font-family: Sora, sans-serif;
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(244, 250, 248, 0.78);
}

.hero__brand {
  margin: 0;
  font-family: "Noto Serif SC", serif;
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: 0.02em;
}

.hero__lead {
  margin: 1.25rem 0 0;
  max-width: 28rem;
  font-size: clamp(1.02rem, 1.6vw, 1.2rem);
  color: rgba(244, 250, 248, 0.86);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 2rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.85rem;
  padding: 0 1.25rem;
  border: 1px solid transparent;
  border-radius: 4px;
  font-size: 0.95rem;
  transition: transform 0.25s var(--ease), background 0.25s var(--ease), color 0.25s var(--ease), border-color 0.25s var(--ease);
}

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

.btn--primary {
  background: #f4faf8;
  color: var(--ink);
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background: #fff;
}

.btn--ghost {
  border-color: rgba(244, 250, 248, 0.45);
  color: #f4faf8;
  background: transparent;
}

.btn--ghost:hover,
.btn--ghost:focus-visible {
  border-color: #f4faf8;
  background: rgba(244, 250, 248, 0.08);
}

.hero__copy > * {
  animation: rise-in 0.9s var(--ease) both;
}

.hero__copy > *:nth-child(1) { animation-delay: 0.08s; }
.hero__copy > *:nth-child(2) { animation-delay: 0.18s; }
.hero__copy > *:nth-child(3) { animation-delay: 0.28s; }
.hero__copy > *:nth-child(4) { animation-delay: 0.38s; }

@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.section {
  padding: clamp(4rem, 9vw, 7rem) clamp(1.25rem, 4vw, 3.5rem);
  background:
    radial-gradient(800px 400px at 100% 0%, rgba(31, 122, 107, 0.08), transparent 60%),
    linear-gradient(180deg, #f7fbf9, #eef5f2);
}

.section__inner {
  max-width: 68rem;
  margin: 0 auto;
}

.section__inner--narrow {
  max-width: 42rem;
}

.section__label {
  margin: 0 0 0.75rem;
  font-family: Sora, sans-serif;
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.section__title {
  margin: 0;
  font-family: "Noto Serif SC", serif;
  font-size: clamp(1.7rem, 3.2vw, 2.4rem);
  line-height: 1.25;
  color: var(--ink);
}

.section__text {
  margin: 1.1rem 0 0;
  font-size: 1.05rem;
  color: var(--muted);
}

.section--business {
  background:
    linear-gradient(180deg, #eaf3f0 0%, #f7fbf9 100%);
  border-block: 1px solid var(--line);
}

.service-list {
  list-style: none;
  margin: 2.5rem 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.service-list li {
  display: grid;
  grid-template-columns: minmax(7rem, 9rem) 1fr;
  gap: 1.25rem;
  padding: 1.35rem 0;
  border-top: 1px solid var(--line);
}

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

.service-list strong {
  font-family: "Noto Serif SC", serif;
  font-size: 1.05rem;
  color: var(--ink);
}

.service-list span {
  color: var(--muted);
}

.contact-list {
  list-style: none;
  margin: 2rem 0 0;
  padding: 0;
}

.contact-list li {
  display: grid;
  grid-template-columns: 3.5rem 1fr;
  gap: 1rem;
  padding: 1rem 0;
  border-top: 1px solid var(--line);
  align-items: start;
}

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

.contact-list span {
  font-family: "Noto Serif SC", serif;
  color: var(--ink);
}

.contact-list a,
.contact-list p {
  margin: 0;
  color: var(--muted);
  word-break: break-all;
}

.contact-list a {
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.contact-list a:hover,
.contact-list a:focus-visible {
  color: var(--ink);
  border-bottom-color: rgba(15, 47, 43, 0.35);
}

.site-footer {
  padding: 2.5rem clamp(1.25rem, 4vw, 3.5rem) 2rem;
  border-top: 1px solid var(--line);
  background: #e7f0ed;
}

.site-footer__inner {
  max-width: 68rem;
  margin: 0 auto;
  text-align: center;
}

.site-footer__name {
  margin: 0;
  font-size: 0.95rem;
  color: var(--muted);
}

.site-footer__beian {
  margin: 0.85rem 0 0;
  font-size: 0.9rem;
}

.site-footer__beian a {
  color: var(--ink-soft);
  border-bottom: 1px solid rgba(31, 92, 82, 0.35);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.site-footer__beian a:hover,
.site-footer__beian a:focus-visible {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 900px) {
  .service-list li {
    grid-template-columns: 1fr;
    gap: 0.4rem;
  }
}

@media (max-width: 640px) {
  .site-nav {
    gap: 1rem;
    font-size: 0.88rem;
  }

  .hero__actions {
    width: 100%;
  }

  .btn {
    flex: 1 1 auto;
  }
}

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

  .hero__copy > *,
  .hero__structure,
  .reveal {
    animation: none !important;
    transition: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
}