:root {
  --bg: #e7eef1;
  --bg-deep: #dce6ea;
  --ink: #292d30;
  --muted: #5c666b;
  --line: rgba(41, 45, 48, 0.14);
  --black: #161719;
  --blue: #1683ff;
  --red: #ef473f;
  --content: 1180px;
  --radius: 28px;
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, sans-serif;
  color: var(--ink);
  background: var(--bg);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 83% 10%, rgba(255, 255, 255, 0.9), transparent 29rem),
    linear-gradient(180deg, #e8eff2 0%, var(--bg) 58%, #e2ebee 100%);
  font-size: 16px;
  line-height: 1.8;
  overflow-x: hidden;
}

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

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

button,
input {
  font: inherit;
}

.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;
}

.site-header {
  position: relative;
  z-index: 20;
  width: min(var(--content), calc(100% - 48px));
  height: 88px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 150px 1fr 180px;
  align-items: center;
  gap: 28px;
}

.brand {
  width: 132px;
}

.brand img {
  width: 112px;
  height: 44px;
  object-fit: cover;
}

.site-nav {
  display: flex;
  justify-content: center;
  gap: clamp(18px, 2.5vw, 40px);
  font-size: 14px;
}

.site-nav a {
  position: relative;
  padding: 6px 0;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 0;
  height: 1px;
  background: var(--ink);
  transition: right 180ms ease;
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
  right: 0;
}

.site-search {
  height: 38px;
  padding: 0 6px 0 16px;
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(255, 255, 255, 0.9);
  border-radius: 999px;
  box-shadow: 0 8px 28px rgba(34, 49, 57, 0.06);
}

.site-search input {
  width: 100%;
  min-width: 0;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--ink);
  font-size: 13px;
}

.site-search button {
  width: 28px;
  height: 28px;
  border: 0;
  border-radius: 50%;
  background: var(--ink);
  color: white;
  display: grid;
  place-items: center;
  cursor: pointer;
}

.site-search svg {
  width: 14px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
}

.menu-toggle {
  display: none;
}

.hero {
  position: relative;
  width: min(1320px, 100%);
  min-height: 630px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(460px, 1.12fr) minmax(420px, 0.88fr);
  align-items: center;
  isolation: isolate;
}

.hero-copy {
  align-self: center;
  min-width: 0;
  padding: 20px clamp(32px, 4vw, 72px) 80px;
}

.eyebrow,
.hero h1,
.hero-summary {
  margin: 0;
}

.eyebrow {
  margin-bottom: 4px;
  font-size: clamp(1.45rem, 2.3vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.04em;
}

.hero h1 {
  width: 100%;
  font-size: clamp(2.4rem, 4.4vw, 4.75rem);
  line-height: 1.13;
  letter-spacing: -0.055em;
  font-weight: 750;
  word-break: keep-all;
}

.title-line {
  display: block;
  white-space: nowrap;
}

.hero-summary {
  max-width: 570px;
  margin-top: 20px;
  color: #4a5459;
  font-size: clamp(1rem, 1.45vw, 1.18rem);
}

.primary-button {
  width: 148px;
  height: 46px;
  margin-top: 28px;
  padding-left: 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: white;
  background: var(--ink);
  border-radius: 999px;
  font-size: 14px;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.primary-button:hover,
.primary-button:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 12px 25px rgba(27, 31, 34, 0.18);
}

.button-orb {
  width: 38px;
  height: 38px;
  margin-right: 4px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--ink);
  background: white;
}

.button-orb svg {
  width: 17px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.hero-visual {
  align-self: end;
  min-width: 0;
  height: 590px;
  overflow: hidden;
}

.hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: left top;
  mix-blend-mode: multiply;
  filter: saturate(1.08) contrast(1.03);
}

.hero-shortcuts {
  position: absolute;
  z-index: 4;
  left: 50%;
  bottom: -35px;
  width: min(930px, calc(100% - 96px));
  min-height: 86px;
  padding: 10px 6%;
  transform: translateX(-50%);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  align-items: center;
  color: white;
  background: var(--black);
  border-radius: 999px;
  box-shadow: 0 24px 55px rgba(21, 25, 28, 0.16);
}

.hero-shortcuts a {
  padding: 12px;
  text-align: center;
  font-size: 16px;
  transition: color 160ms ease;
}

.hero-shortcuts a:hover,
.hero-shortcuts a:focus-visible {
  color: #85bdff;
}

.section-shell {
  width: min(var(--content), calc(100% - 64px));
  margin: 0 auto;
}

.intro {
  position: relative;
  padding: 170px 0 80px;
  display: grid;
  grid-template-columns: minmax(270px, 0.8fr) minmax(0, 1.6fr);
  gap: clamp(56px, 9vw, 128px);
  align-items: center;
}

.intro::after {
  content: "";
  position: absolute;
  z-index: -1;
  left: -220px;
  top: 120px;
  width: 950px;
  height: 300px;
  border: 1px solid rgba(55, 75, 84, 0.13);
  border-radius: 50%;
  transform: rotate(-12deg);
}

.intro-art {
  aspect-ratio: 1 / 1;
  border-radius: 35% 18% 38% 23%;
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(21, 37, 47, 0.12);
}

.intro-art img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.intro h2,
.mechanism h2,
.section-heading h2 {
  margin: 0;
  font-size: clamp(1.8rem, 3vw, 3rem);
  line-height: 1.25;
  letter-spacing: -0.04em;
}

.intro-copy > p:last-child,
.mechanism-copy p {
  max-width: 760px;
  margin: 26px 0 0;
  color: #424c51;
  font-size: 17px;
  line-height: 2;
}

.mechanism {
  padding: 78px 0 100px;
  display: grid;
  grid-template-columns: 0.8fr 1.6fr;
  gap: clamp(56px, 9vw, 128px);
  border-top: 1px solid var(--line);
}

.mechanism-copy {
  align-self: end;
}

.mechanism-copy p {
  margin-top: 0;
}

.section-note {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 17px;
}

.services {
  padding: 24px 0 100px;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.service-card {
  position: relative;
  min-height: 420px;
  padding: 32px 28px;
  color: white;
  background:
    linear-gradient(160deg, rgba(255, 255, 255, 0.035), transparent 35%),
    var(--black);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 24px;
  overflow: hidden;
  transition: transform 220ms ease, box-shadow 220ms ease;
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 24px 44px rgba(29, 35, 38, 0.2);
}

.service-card img {
  width: 126px;
  height: 126px;
  margin: 0 auto 28px;
  object-fit: cover;
  border-radius: 50%;
  border: 5px solid #030303;
}

.service-card h3 {
  margin: 0;
  font-size: 25px;
  text-align: center;
  letter-spacing: -0.03em;
}

.service-card > p:last-child {
  margin: 22px 0 0;
  color: rgba(255, 255, 255, 0.78);
  font-size: 15px;
  line-height: 1.9;
}

.closing {
  position: relative;
  min-height: 230px;
  margin-bottom: 74px;
  border-radius: 110px;
  overflow: hidden;
  display: grid;
  place-items: center;
  box-shadow: 0 26px 50px rgba(25, 37, 43, 0.12);
}

.closing > img,
.closing-overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.closing > img {
  object-fit: cover;
}

.closing-overlay {
  background: linear-gradient(90deg, rgba(10, 20, 27, 0.52), rgba(12, 15, 18, 0.38));
}

.closing-copy {
  position: relative;
  z-index: 1;
  color: white;
}

.closing-copy p {
  margin: 0;
  font-size: clamp(1.5rem, 3vw, 2.45rem);
  font-weight: 650;
  letter-spacing: 0.12em;
}

.site-footer {
  width: min(var(--content), calc(100% - 64px));
  min-height: 90px;
  margin: 0 auto;
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

.search-status {
  position: fixed;
  z-index: 50;
  left: 50%;
  bottom: 26px;
  transform: translate(-50%, 20px);
  padding: 10px 18px;
  color: white;
  background: rgba(22, 23, 25, 0.94);
  border-radius: 999px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 180ms ease, transform 180ms ease;
}

.search-status.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 650ms ease, transform 650ms ease;
}

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

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}

@media (max-width: 1040px) {
  .site-header {
    grid-template-columns: 130px 1fr 160px;
    gap: 12px;
  }

  .site-nav {
    gap: 14px;
    font-size: 13px;
  }

  .hero {
    grid-template-columns: minmax(420px, 1.05fr) minmax(360px, 0.95fr);
  }

  .hero-copy {
    padding-inline: 40px;
  }

  .hero h1 {
    font-size: clamp(2.5rem, 5.4vw, 3.75rem);
  }

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

@media (max-width: 880px) {
  .site-header {
    position: sticky;
    top: 0;
    width: 100%;
    height: 68px;
    padding: 0 20px;
    grid-template-columns: 1fr auto;
    background: rgba(231, 238, 241, 0.88);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(41, 45, 48, 0.08);
  }

  .brand,
  .brand img {
    width: 102px;
    height: 40px;
  }

  .menu-toggle {
    width: 42px;
    height: 42px;
    padding: 10px;
    display: grid;
    align-content: center;
    gap: 5px;
    border: 0;
    background: transparent;
    cursor: pointer;
  }

  .menu-toggle span:not(.sr-only) {
    width: 100%;
    height: 2px;
    background: var(--ink);
    transition: transform 180ms ease, opacity 180ms ease;
  }

  .menu-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .menu-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
  }

  .menu-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .site-nav {
    position: absolute;
    left: 16px;
    right: 16px;
    top: 76px;
    padding: 18px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    color: white;
    background: rgba(22, 23, 25, 0.97);
    border-radius: 18px;
    box-shadow: 0 24px 50px rgba(20, 30, 36, 0.18);
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    padding: 9px 10px;
  }

  .site-search {
    display: none;
  }

  .hero {
    min-height: 760px;
    grid-template-columns: 1fr;
    grid-template-rows: auto 360px;
    align-items: start;
  }

  .hero-copy {
    padding: 70px 24px 28px;
  }

  .hero h1 {
    max-width: 100%;
    font-size: clamp(2.25rem, 9vw, 4rem);
  }

  .hero-visual {
    height: 400px;
    margin-left: 18%;
  }

  .hero-shortcuts {
    bottom: -28px;
    width: calc(100% - 32px);
    min-height: 64px;
    padding: 6px 12px;
  }

  .hero-shortcuts a {
    padding: 8px 4px;
    font-size: 14px;
  }

  .section-shell {
    width: min(100% - 40px, var(--content));
  }

  .intro {
    padding-top: 116px;
    grid-template-columns: 1fr;
    gap: 42px;
  }

  .intro-art {
    width: min(78vw, 380px);
  }

  .mechanism {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .intro-copy > p:last-child,
  .mechanism-copy p {
    font-size: 16px;
  }

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

  .service-card {
    min-height: auto;
    padding: 26px;
    display: grid;
    grid-template-columns: 100px 1fr;
    column-gap: 22px;
    align-items: center;
  }

  .service-card img {
    grid-row: span 2;
    width: 100px;
    height: 100px;
    margin: 0;
  }

  .service-card h3,
  .service-card > p:last-child {
    text-align: left;
  }

  .service-card > p:last-child {
    margin: 8px 0 0;
  }

  .closing {
    min-height: 310px;
    border-radius: 70px;
  }

  .closing-copy {
    padding: 30px;
    text-align: center;
  }

  .closing-copy p {
    letter-spacing: 0.04em;
  }
}

@media (max-width: 430px) {
  .hero {
    min-height: 700px;
    grid-template-rows: auto 310px;
  }

  .hero-copy {
    padding-top: 54px;
    padding-inline: 20px;
  }

  .hero h1 {
    font-size: clamp(2rem, 9.5vw, 2.6rem);
  }

  .hero-summary {
    max-width: 19em;
    line-height: 1.7;
  }

  .hero-visual {
    height: 335px;
    margin-left: 10%;
  }

  .service-card {
    grid-template-columns: 82px 1fr;
    column-gap: 18px;
  }

  .service-card img {
    width: 82px;
    height: 82px;
  }

  .service-card h3 {
    font-size: 21px;
  }
}