:root {
  --page: #fbfcf8;
  --ink: #151512;
  --muted: #62665d;
  --line: #dfe6d8;
  --green: #1d6f53;
  --green-soft: #dcefe4;
  --orange: #e9783b;
  --yellow: #f2c94c;
  --paper: #ffffff;
  --radius: 8px;
  --shadow: 0 24px 60px rgba(34, 47, 37, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(233, 120, 59, 0.13), transparent 32vw),
    linear-gradient(90deg, rgba(29, 111, 83, 0.06) 1px, transparent 1px),
    var(--page);
  background-size: auto, 96px 96px, auto;
  font-family: "Songti SC", "STSong", "Noto Serif SC", "PingFang SC", serif;
  line-height: 1.65;
}

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

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px clamp(20px, 5vw, 78px);
  background: rgba(251, 252, 248, 0.86);
  border-bottom: 1px solid rgba(223, 230, 216, 0.9);
  backdrop-filter: blur(18px);
}

.topbar.static {
  position: relative;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 17px;
  font-weight: 800;
}

.brand-symbol {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  color: #fff;
  background: var(--green);
  border-radius: 50%;
  font-family: Georgia, serif;
  font-size: 20px;
}

.nav {
  display: flex;
  gap: clamp(16px, 2.4vw, 34px);
  align-items: center;
  color: #333a32;
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 14px;
}

.nav a {
  padding: 8px 0;
}

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

.nav-button {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper);
}

.nav-button span {
  display: block;
  width: 17px;
  height: 2px;
  margin: 5px auto;
  background: var(--ink);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.94fr) minmax(330px, 1.06fr);
  gap: clamp(38px, 6vw, 86px);
  align-items: center;
  min-height: calc(100vh - 75px);
  padding: clamp(56px, 8vw, 112px) clamp(20px, 5vw, 78px) 76px;
}

.hero-copy h1 {
  max-width: 700px;
  margin: 0 0 24px;
  font-size: clamp(34px, 4.5vw, 58px);
  line-height: 1.12;
  letter-spacing: 0;
}

.hero-copy p {
  max-width: 590px;
  margin: 0 0 34px;
  color: var(--muted);
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  align-items: center;
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 700;
}

.button.dark {
  color: #fff;
  background: var(--ink);
}

.text-link {
  color: var(--green);
  font-size: 14px;
  font-weight: 700;
}

.product-canvas {
  position: relative;
  min-height: 540px;
}

.studio-stage {
  min-height: 560px;
  isolation: isolate;
}

.product-canvas::before {
  position: absolute;
  inset: 42px 30px 40px 70px;
  content: "";
  background: var(--green-soft);
  border: 1px solid var(--line);
  border-radius: 42% 58% 44% 56%;
}

.studio-stage::before {
  inset: 62px 20px 44px 82px;
  z-index: -1;
  background: linear-gradient(135deg, rgba(29, 111, 83, 0.18), rgba(233, 120, 59, 0.08));
  border: 0;
  border-radius: 34px;
}

.studio-stage img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 48% 52%;
  border: 1px solid var(--line);
  border-radius: 28px;
  box-shadow: 0 34px 90px rgba(34, 47, 37, 0.16);
}

.studio-stage::after {
  position: absolute;
  inset: 0;
  content: "";
  background: linear-gradient(90deg, rgba(251, 252, 248, 0.08), transparent 42%);
  border-radius: 28px;
  pointer-events: none;
}

.studio-badge {
  position: absolute;
  z-index: 2;
  right: 26px;
  top: 28px;
  display: grid;
  gap: 2px;
  min-width: 150px;
  padding: 16px 18px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(223, 230, 216, 0.9);
  border-radius: 8px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
}

.studio-badge span {
  color: var(--orange);
  font-size: 12px;
  font-weight: 800;
}

.app-card,
.note-card {
  position: absolute;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.app-card-main {
  top: 24px;
  left: 16%;
  width: min(320px, 58%);
  min-height: 438px;
  padding: 26px;
}

.app-card-side {
  right: 4%;
  bottom: 92px;
  width: min(250px, 46%);
  padding: 24px;
}

.note-card {
  left: 3%;
  bottom: 34px;
  width: min(300px, 54%);
  padding: 22px;
  background: #151512;
  color: #fff;
}

.note-card p,
.app-card-side small {
  margin: 4px 0 0;
  color: rgba(255, 255, 255, 0.68);
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 13px;
}

.studio-stage .note-card {
  z-index: 2;
  left: 30px;
  bottom: 30px;
}

.app-card-side small {
  color: var(--muted);
}

.app-top {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 34px;
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
}

.app-top span {
  display: block;
  width: 40px;
  height: 40px;
  background: var(--orange);
  border-radius: 50%;
}

.progress-ring {
  display: grid;
  width: 172px;
  height: 172px;
  place-items: center;
  margin: 0 auto 34px;
  background:
    radial-gradient(circle, #fff 54%, transparent 55%),
    conic-gradient(var(--green) 0 68%, #ecf1e8 68% 100%);
  border-radius: 50%;
}

.progress-ring span {
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 30px;
  font-weight: 800;
}

.app-row {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 14px;
  align-items: center;
  margin-bottom: 14px;
}

.app-row i,
.app-row b {
  display: block;
  height: 38px;
  background: #eff4eb;
  border-radius: 999px;
}

.app-row b {
  height: 14px;
}

.app-row.short {
  grid-template-columns: 42px 66%;
}

.mini-flow {
  display: flex;
  gap: 10px;
  margin-top: 26px;
}

.mini-flow span {
  flex: 1;
  height: 70px;
  background: #f0f5ed;
  border-radius: 8px;
}

.mini-flow span:nth-child(2) {
  background: rgba(233, 120, 59, 0.18);
}

.label {
  margin: 0 0 14px;
  color: var(--orange);
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.intro,
.services,
.work,
.method,
.contact,
.studio-feature {
  padding: clamp(72px, 9vw, 120px) clamp(20px, 5vw, 78px);
}

.intro {
  display: grid;
  grid-template-columns: minmax(170px, 0.4fr) minmax(0, 1fr);
  gap: 40px;
  background: #fff;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

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

h2 {
  margin-bottom: 18px;
  font-size: clamp(30px, 4vw, 54px);
  line-height: 1.05;
  letter-spacing: 0;
}

.intro p,
.services p,
.work span,
.method p,
.contact p,
.privacy-content p,
.privacy-hero p {
  color: var(--muted);
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
}

.intro div p {
  max-width: 780px;
  font-size: 18px;
}

.section-title {
  max-width: 680px;
  margin-bottom: 42px;
}

.service-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

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

.service-list span {
  color: var(--green);
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 14px;
  font-weight: 800;
}

.service-list h3 {
  grid-column: 2;
  margin-bottom: 8px;
  font-size: 24px;
  line-height: 1.2;
}

.service-list p {
  grid-column: 2;
}

.studio-feature {
  display: grid;
  grid-template-columns: minmax(300px, 0.72fr) minmax(0, 1fr);
  gap: clamp(34px, 5vw, 72px);
  align-items: center;
  background: #fff;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.studio-feature p {
  color: var(--muted);
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 17px;
}

.studio-feature figure {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow);
}

.studio-feature img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  object-position: 46% 50%;
}

.work {
  display: grid;
  grid-template-columns: minmax(260px, 0.75fr) minmax(0, 1fr);
  gap: clamp(36px, 6vw, 90px);
  color: #fff;
  background: #151512;
}

.work .label {
  color: var(--yellow);
}

.work-lines {
  border-top: 1px solid rgba(255, 255, 255, 0.18);
}

.work-lines div {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 28px;
  padding: 28px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
}

.work-lines strong {
  font-size: 20px;
}

.work-lines span {
  color: rgba(255, 255, 255, 0.72);
}

.method {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(280px, 0.65fr);
  gap: 34px;
  align-items: stretch;
}

.method-card {
  padding: clamp(32px, 5vw, 56px);
  background: var(--green-soft);
  border-radius: var(--radius);
}

.steps {
  display: grid;
  gap: 12px;
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
}

.steps span {
  display: flex;
  align-items: center;
  min-height: 70px;
  padding: 0 24px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-weight: 700;
}

.contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 36px;
  align-items: center;
  background: #fff;
  border-top: 1px solid var(--line);
}

.contact div {
  max-width: 820px;
}

.mail {
  display: inline-flex;
  min-height: 54px;
  align-items: center;
  justify-content: center;
  padding: 0 24px;
  color: #fff;
  background: var(--green);
  border-radius: 999px;
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-weight: 700;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 30px clamp(20px, 5vw, 78px);
  color: #dde8dc;
  background: #151512;
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 13px;
}

.footer strong,
.footer span {
  display: block;
}

.footer-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
}

.privacy-page {
  background: #fff;
}

.privacy-hero {
  padding: 88px clamp(20px, 5vw, 78px) 44px;
  border-bottom: 1px solid var(--line);
}

.privacy-hero h1 {
  margin: 0 0 14px;
  font-size: clamp(44px, 7vw, 86px);
  line-height: 1;
}

.privacy-hero p {
  max-width: 740px;
}

.privacy-content {
  max-width: 900px;
  padding: 48px clamp(20px, 5vw, 78px) 96px;
}

.privacy-content h2 {
  margin-top: 34px;
  font-size: 24px;
}

.privacy-content h2:first-child {
  margin-top: 0;
}

@media (max-width: 980px) {
  .hero,
  .intro,
  .work,
  .method,
  .contact,
  .studio-feature {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

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

@media (max-width: 740px) {
  .topbar {
    padding: 14px 18px;
  }

  .nav-button {
    display: block;
  }

  .nav {
    position: absolute;
    top: 70px;
    right: 18px;
    left: 18px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: var(--shadow);
  }

  .nav.open,
  .nav.always {
    display: flex;
  }

  .nav.always {
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
    box-shadow: none;
  }

  .nav a {
    padding: 12px;
  }

  .brand {
    font-size: 15px;
  }

  .product-canvas {
    min-height: 456px;
  }

  .studio-stage {
    min-height: 358px;
  }

  .product-canvas::before {
    inset: 20px 0 30px;
  }

  .studio-stage img,
  .studio-stage::after {
    border-radius: 18px;
  }

  .studio-badge {
    top: 14px;
    right: 14px;
    min-width: 132px;
    padding: 12px 14px;
  }

  .studio-stage .note-card {
    left: 14px;
    bottom: 14px;
    width: 58%;
    padding: 14px;
  }

  .app-card-main {
    left: 4%;
    width: 68%;
    min-height: 380px;
  }

  .app-card-side {
    right: 0;
    width: 50%;
  }

  .note-card {
    width: 66%;
  }

  .progress-ring {
    width: 140px;
    height: 140px;
  }

  .work-lines div,
  .service-list article {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .service-list h3,
  .service-list p {
    grid-column: 1;
  }

  .footer {
    flex-direction: column;
  }
}