:root {
  --paper: #F6F5F1;
  --card: #FFFFFF;
  --ink: #191C20;
  --ink-soft: #4B5057;
  --muted: #858A91;
  --line: #E4E1DA;
  --brand: #E4574E;
  --brand-deep: #B93D36;
  --brand-soft: #FBEDE7;
  --teal: #167D6B;
  --teal-soft: #E4F1ED;
  --amber: #D98E2B;
  --dark: #15181C;
  --white: #FFFFFF;
  --shadow: 0 18px 45px rgba(21, 24, 28, 0.08);
  --serif: "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
}

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

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 100;
  padding: 10px 14px;
  background: var(--ink);
  color: var(--white);
  border-radius: 6px;
  text-decoration: none;
  transform: translateY(-200%);
  transition: transform 0.2s ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.container {
  width: min(1120px, calc(100% - 48px));
  margin-inline: auto;
}

.section {
  padding: 112px 0;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 16px;
  color: var(--teal);
  font-size: 13px;
  font-weight: 700;
}

.eyebrow::before {
  content: "";
  width: 28px;
  height: 2px;
  background: currentColor;
}

.eyebrow--light {
  color: #F2A49E;
}

.section-heading h2,
.philosophy__intro h2,
.commitment__lead h2,
.join__inner h2 {
  margin: 0 0 18px;
  font-family: var(--serif);
  font-size: 40px;
  font-weight: 600;
  line-height: 1.32;
}

.section-heading p:last-child,
.philosophy__intro > p:last-child,
.commitment__lead > p:last-child,
.join__inner > div > p:last-child {
  margin-bottom: 0;
  color: var(--ink-soft);
  line-height: 1.9;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 24px;
  border: 1px solid transparent;
  border-radius: 6px;
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.btn--primary {
  background: var(--brand);
  color: var(--white);
}

.btn--primary:hover {
  background: var(--brand-deep);
  transform: translateY(-2px);
  box-shadow: 0 14px 28px rgba(185, 61, 54, 0.2);
}

.btn--ghost {
  border-color: rgba(255, 255, 255, 0.32);
  background: rgba(255, 255, 255, 0.04);
  color: var(--white);
}

.btn--ghost:hover {
  border-color: rgba(255, 255, 255, 0.72);
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
}

.site-header {
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  z-index: 50;
  background: rgba(246, 245, 241, 0.9);
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(14px);
  transition: background 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.site-header.is-scrolled {
  background: rgba(246, 245, 241, 0.96);
  border-bottom-color: var(--line);
  box-shadow: 0 10px 30px rgba(21, 24, 28, 0.06);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  text-decoration: none;
}

.brand img {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  box-shadow: 0 8px 20px rgba(21, 24, 28, 0.12);
}

.brand__text {
  display: grid;
  gap: 1px;
}

.brand__name {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.1;
}

.brand__tag {
  color: var(--muted);
  font-size: 10px;
  font-weight: 700;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-menu a {
  position: relative;
  padding: 8px 0;
  color: var(--ink-soft);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: color 0.2s ease;
}

.nav-menu a::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 2px;
  left: 0;
  height: 2px;
  background: var(--brand);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.25s ease;
}

.nav-menu a:hover,
.nav-menu a.is-active {
  color: var(--ink);
}

.nav-menu a:hover::after,
.nav-menu a.is-active::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav-menu__cta {
  padding: 10px 16px !important;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--card);
}

.nav-menu__cta::after {
  display: none;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--card);
  cursor: pointer;
}

.nav-toggle span:not(.sr-only) {
  display: block;
  width: 100%;
  height: 2px;
  margin: 5px 0;
  background: var(--ink);
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.hero {
  position: relative;
  min-height: 720px;
  padding: 168px 0 104px;
  overflow: hidden;
  background: var(--dark);
  color: var(--white);
}

.hero__backdrop {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 56px 56px;
  pointer-events: none;
}

.hero__backdrop::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(44vw, 560px);
  border-left: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.025);
}

.hero__mark {
  position: absolute;
  right: 7vw;
  bottom: -44px;
  width: 440px;
  opacity: 0.14;
  filter: drop-shadow(0 30px 60px rgba(0, 0, 0, 0.2));
}

.hero__inner {
  position: relative;
  z-index: 1;
  max-width: 880px;
}

.hero h1 {
  max-width: 780px;
  margin: 20px 0 24px;
  font-family: var(--serif);
  font-size: 64px;
  font-weight: 600;
  line-height: 1.2;
}

.hero__lead {
  max-width: 640px;
  margin-bottom: 0;
  color: #D6D9DD;
  font-size: 18px;
  line-height: 1.9;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.hero__proof {
  display: flex;
  flex-wrap: wrap;
  gap: 44px;
  margin: 62px 0 0;
  padding: 0;
  list-style: none;
}

.hero__proof li {
  display: grid;
  gap: 2px;
  padding-top: 10px;
}

.hero__proof li::before {
  content: "";
  width: 28px;
  height: 2px;
  margin-bottom: 8px;
  background: var(--brand);
}

.hero__proof span {
  color: var(--white);
  font-weight: 700;
}

.hero__proof li {
  color: #AEB4BA;
  font-size: 14px;
}

.philosophy {
  border-bottom: 1px solid var(--line);
}

.philosophy__grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 84px;
  align-items: start;
}

.philosophy__intro h2 {
  font-size: 42px;
}

.philosophy__intro > p:last-child {
  max-width: 460px;
}

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

.philosophy__principles article {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 6px 20px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}

.principle__index {
  color: var(--brand);
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 600;
}

.philosophy__principles h3 {
  margin: 0;
  font-size: 20px;
  font-weight: 700;
}

.philosophy__principles p {
  grid-column: 2;
  margin: 0;
  color: var(--ink-soft);
  line-height: 1.8;
}

.trust {
  background: var(--card);
  border-bottom: 1px solid var(--line);
}

.trust .section-heading {
  max-width: 720px;
}

.trust__steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin: 58px 0 0;
  padding: 0;
  list-style: none;
}

.trust__steps li {
  min-width: 0;
  padding-top: 22px;
  border-top: 2px solid var(--line);
}

.trust__steps li::before {
  content: "";
  display: block;
  width: 36px;
  height: 6px;
  margin-top: -24px;
  background: var(--brand);
}

.trust__steps span {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  margin: 22px 0 14px;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--teal);
  font-size: 14px;
  font-weight: 700;
}

.trust__steps strong {
  display: block;
  font-size: 16px;
}

.trust__steps small {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font-size: 13px;
}

.section-heading--split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: end;
}

.section-heading--split > p:last-child {
  justify-self: end;
  max-width: 460px;
  margin: 0 0 5px;
}

.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 58px;
}

.service-card {
  min-height: 216px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--card);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.service-card:hover {
  border-color: #D5D1C7;
  box-shadow: var(--shadow);
  transform: translateY(-4px);
}

.service-card__icon {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  margin-bottom: 24px;
  border-radius: 8px;
  background: var(--teal-soft);
  color: var(--teal);
}

.service-card:nth-child(2) .service-card__icon {
  background: var(--brand-soft);
  color: var(--brand);
}

.service-card:nth-child(3) .service-card__icon {
  background: #FFF3DE;
  color: var(--amber);
}

.service-card:nth-child(5) .service-card__icon {
  background: var(--brand-soft);
  color: var(--brand);
}

.service-card:nth-child(6) .service-card__icon {
  background: #E9E6F5;
  color: #5B4B8A;
}

.service-card h3 {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 700;
}

.service-card p {
  margin-bottom: 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.8;
}

.commitment {
  background: var(--dark);
  color: var(--white);
}

.commitment__grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 84px;
  align-items: start;
}

.commitment__lead > p:last-child {
  max-width: 440px;
  color: #C8CDD2;
}

.commitment__list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.commitment__item {
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.045);
}

.commitment__item strong {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 17px;
}

.commitment__item strong::before {
  content: "";
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--brand);
}

.commitment__item p {
  margin: 12px 0 0;
  color: #C8CDD2;
  font-size: 14px;
  line-height: 1.8;
}

.join__inner {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 48px;
  padding: 64px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.join__inner h2 {
  margin-bottom: 0;
  font-size: 36px;
}

.join__actions {
  display: flex;
  flex: none;
  flex-direction: column;
  align-items: flex-end;
  gap: 18px;
}

.join__note {
  color: var(--muted);
  font-size: 14px;
}

.site-footer {
  padding: 44px 0;
  background: var(--ink);
  color: #C6C9CC;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 28px 40px;
  align-items: center;
}

.footer__brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.footer__brand img {
  width: 44px;
  height: 44px;
  border-radius: 10px;
}

.footer__brand p {
  margin: 0;
  color: #E7E9EB;
  font-size: 15px;
}

.footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
}

.footer__links a {
  color: #E7E9EB;
  font-size: 14px;
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer__links a:hover {
  color: var(--white);
}

.footer__legal {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  min-height: 20px;
  margin: 10px 0 0;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.footer__beian {
  justify-self: start;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  color: #8F959B;
  font-size: 12px;
}

.footer__beian a {
  color: #8F959B;
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer__beian a:hover {
  color: var(--white);
}

.footer__beian-sep {
  color: rgba(255, 255, 255, 0.22);
}

.footer__copy {
  grid-column: 3;
  justify-self: end;
  margin: 0;
  color: #8F959B;
  font-size: 13px;
  text-align: right;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

.services__grid[data-reveal] .service-card:nth-child(2),
.commitment__list[data-reveal] .commitment__item:nth-child(2) {
  transition-delay: 0.08s;
}

.services__grid[data-reveal] .service-card:nth-child(3),
.commitment__list[data-reveal] .commitment__item:nth-child(3) {
  transition-delay: 0.16s;
}

.services__grid[data-reveal] .service-card:nth-child(4),
.commitment__list[data-reveal] .commitment__item:nth-child(4) {
  transition-delay: 0.24s;
}

.services__grid[data-reveal] .service-card:nth-child(5) {
  transition-delay: 0.32s;
}

.services__grid[data-reveal] .service-card:nth-child(6) {
  transition-delay: 0.4s;
}

@media (max-width: 900px) {
  .section {
    padding: 88px 0;
  }

  .philosophy__grid,
  .commitment__grid {
    grid-template-columns: 1fr;
    gap: 56px;
  }

  .section-heading--split {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .section-heading--split > p:last-child {
    justify-self: start;
    max-width: 620px;
  }

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

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

  .hero__mark {
    right: -70px;
    width: 380px;
  }
}

@media (max-width: 720px) {
  .container {
    width: min(1120px, calc(100% - 32px));
  }

  .section {
    padding: 72px 0;
  }

  .site-header {
    background: rgba(246, 245, 241, 0.96);
  }

  .nav {
    min-height: 66px;
  }

  .nav-toggle {
    display: block;
  }

  .nav-menu {
    position: absolute;
    top: 66px;
    right: 16px;
    left: 16px;
    display: grid;
    gap: 0;
    padding: 10px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--card);
    box-shadow: 0 20px 44px rgba(21, 24, 28, 0.12);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s ease;
  }

  .nav-menu.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .nav-menu a {
    padding: 13px 14px;
    border-bottom: 1px solid var(--line);
  }

  .nav-menu a:last-child {
    border-bottom: 0;
  }

  .nav-menu a::after {
    display: none;
  }

  .nav-menu__cta {
    margin-top: 6px;
    padding: 11px 14px !important;
    text-align: center;
  }

  .hero {
    min-height: auto;
    padding: 132px 0 72px;
  }

  .hero h1 {
    font-size: 40px;
  }

  .hero__lead {
    font-size: 16px;
  }

  .hero__proof {
    gap: 24px;
    margin-top: 44px;
  }

  .hero__mark {
    right: -120px;
    bottom: -30px;
    width: 300px;
  }

  .section-heading h2,
  .philosophy__intro h2,
  .commitment__lead h2 {
    font-size: 30px;
  }

  .philosophy__principles article {
    grid-template-columns: 44px 1fr;
  }

  .trust__steps {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

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

  .service-card {
    min-height: auto;
  }

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

  .join__inner {
    display: grid;
    align-items: start;
    gap: 28px;
    padding: 48px 0;
  }

  .join__inner h2 {
    font-size: 30px;
  }

  .join__actions {
    align-items: flex-start;
  }

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

  .footer__links {
    gap: 14px 22px;
  }

  .footer__legal {
    grid-column: 1;
    grid-template-columns: 1fr;
    justify-items: center;
    gap: 10px;
  }

  .footer__beian,
  .footer__copy {
    grid-column: 1;
    justify-self: center;
    text-align: center;
  }
}

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

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

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