:root {
  --green: #4a6741;
  --green-mid: #7a9e74;
  --green-soft: #ebf0e9;
  --gold: #b8965a;
  --ink: #1a1a18;
  --muted: #6b6860;
  --light: #a8a49a;
  --paper: #fafaf8;
  --surface: #ffffff;
  --warm: #f5f4f0;
  --line: #e8e5de;
  --shadow: 0 18px 54px rgba(26, 26, 24, 0.14);
  color: var(--ink);
  background: var(--paper);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--paper);
}

body,
button,
input {
  font: inherit;
}

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

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

.site-header {
  position: fixed;
  top: 18px;
  left: 50%;
  z-index: 20;
  width: min(1120px, calc(100% - 32px));
  min-height: 58px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 10px 12px 10px 18px;
  border: 1px solid rgba(255, 255, 255, 0.52);
  border-radius: 999px;
  background: rgba(250, 250, 248, 0.76);
  box-shadow: 0 8px 28px rgba(26, 26, 24, 0.08);
  backdrop-filter: blur(18px);
  transform: translateX(-50%);
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
}

.brand-mark strong {
  display: block;
  font-family: "Noto Serif SC", "Songti SC", "SimSun", serif;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.brand-mark small {
  display: block;
  margin-top: 1px;
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.leaf-logo {
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
  border-radius: 50% 50% 50% 0;
  background: var(--green);
  box-shadow: 0 6px 16px rgba(74, 103, 65, 0.26);
  transform: rotate(-45deg);
  position: relative;
}

.leaf-logo::after {
  content: "";
  position: absolute;
  width: 15px;
  height: 15px;
  top: 9px;
  left: 9px;
  border-radius: 50% 50% 50% 0;
  background: rgba(255, 255, 255, 0.28);
  transform: rotate(20deg);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  color: var(--muted);
  font-size: 14px;
}

.nav-links a {
  padding: 8px 0;
}

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

.nav-contact,
.primary-action,
.secondary-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
}

.nav-contact {
  background: var(--green);
  color: #ffffff;
  box-shadow: 0 2px 8px rgba(74, 103, 65, 0.24);
}

.hero {
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  padding: 124px max(24px, calc((100vw - 1120px) / 2)) 76px;
  background: var(--ink);
}

.hero-image,
.hero-shade {
  position: absolute;
  inset: 0;
}

.hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-shade {
  background:
    linear-gradient(90deg, rgba(20, 20, 18, 0.72) 0%, rgba(20, 20, 18, 0.28) 46%, rgba(20, 20, 18, 0.12) 100%),
    linear-gradient(0deg, rgba(20, 20, 18, 0.58) 0%, rgba(20, 20, 18, 0.04) 48%);
}

.hero-content {
  position: relative;
  z-index: 2;
  width: min(760px, 100%);
  color: #ffffff;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--green-mid);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: rgba(255, 255, 255, 0.78);
}

.hero h1,
.section-heading h2,
.trust-panel h2 {
  margin: 0;
  font-family: "Noto Serif SC", "Songti SC", "SimSun", serif;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.hero h1 {
  font-size: clamp(48px, 8vw, 92px);
  line-height: 1.05;
}

.hero-title-sub {
  margin: 20px 0 0;
  font-size: clamp(25px, 3.4vw, 42px);
  line-height: 1.18;
  font-weight: 600;
}

.hero-copy {
  max-width: 610px;
  margin: 18px 0 0;
  color: rgba(255, 255, 255, 0.86);
  font-size: clamp(16px, 1.6vw, 20px);
  line-height: 1.85;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.primary-action {
  min-height: 48px;
  padding: 0 24px;
  background: var(--green);
  color: #ffffff;
  box-shadow: 0 2px 8px rgba(74, 103, 65, 0.25);
}

.secondary-action {
  min-height: 48px;
  padding: 0 24px;
  border: 1px solid rgba(255, 255, 255, 0.7);
  color: #ffffff;
  background: rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(12px);
}

.intro-section,
.features-section,
.scenes-section,
.materials-section,
.trust-section {
  padding: 88px max(24px, calc((100vw - 1120px) / 2));
}

.intro-section {
  padding-top: 70px;
}

.section-heading {
  max-width: 780px;
  margin-bottom: 38px;
}

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

.section-heading h2,
.trust-panel h2 {
  font-size: clamp(30px, 4.2vw, 52px);
  line-height: 1.18;
}

.section-heading p:not(.eyebrow) {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.9;
}

.product-flow {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.product-flow article,
.feature-list article,
.scene-grid article,
.ops-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.product-flow article {
  padding: 26px;
}

.product-flow span {
  color: var(--gold);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 34px;
}

h3 {
  margin: 14px 0 10px;
  font-size: 20px;
  line-height: 1.35;
}

article p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}

.gallery-band {
  padding: 18px max(16px, calc((100vw - 1240px) / 2)) 78px;
  background: linear-gradient(180deg, var(--paper), var(--warm));
}

.gallery-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.9fr 0.9fr;
  grid-auto-rows: 260px;
  gap: 14px;
}

.gallery-grid figure {
  position: relative;
  margin: 0;
  min-height: 0;
  overflow: hidden;
  border-radius: 8px;
  background: var(--line);
}

.gallery-grid figure:first-child {
  grid-row: span 2;
}

.gallery-grid img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.gallery-grid figcaption {
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 14px;
  padding: 9px 12px;
  border-radius: 999px;
  background: rgba(250, 250, 248, 0.82);
  color: var(--ink);
  font-size: 13px;
  line-height: 1.45;
  backdrop-filter: blur(14px);
}

.features-section {
  background: var(--warm);
}

.feature-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 390px;
  gap: 46px;
  align-items: center;
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.feature-list article {
  padding: 24px;
}

.feature-icon {
  display: inline-flex;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: var(--green-soft);
  color: var(--green);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.phone-showcase {
  display: flex;
  justify-content: center;
}

.phone-shell {
  width: min(100%, 360px);
  padding: 14px;
  border: 1px solid rgba(74, 103, 65, 0.14);
  border-radius: 34px;
  background: #f7f1e7;
  box-shadow: var(--shadow);
}

.phone-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 12px 14px;
  color: var(--green);
  font-size: 14px;
  font-weight: 700;
}

.phone-top button {
  width: 34px;
  height: 34px;
  border: 0;
  border-radius: 999px;
  background: #ffffff;
  color: var(--green);
}

.phone-hero-photo {
  position: relative;
  overflow: hidden;
  border-radius: 24px;
  aspect-ratio: 1 / 1.03;
}

.phone-hero-photo img,
.phone-grid img,
.scene-grid img,
.postcard-card > img,
.paper-frame > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.phone-hero-photo span {
  position: absolute;
  left: 16px;
  bottom: 16px;
  padding: 7px 12px;
  border-radius: 999px;
  background: rgba(20, 20, 18, 0.7);
  color: #ffffff;
  font-size: 12px;
}

.phone-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 4px;
  margin-top: 8px;
  overflow: hidden;
  border-radius: 18px;
}

.phone-grid img {
  aspect-ratio: 1;
}

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

.scene-grid article {
  overflow: hidden;
}

.scene-grid img {
  aspect-ratio: 1.1;
}

.scene-grid h3,
.scene-grid p {
  padding-right: 20px;
  padding-left: 20px;
}

.scene-grid h3 {
  margin-top: 18px;
}

.scene-grid p {
  padding-bottom: 24px;
}

.materials-section {
  background: #eef1eb;
}

.materials-layout {
  display: grid;
  grid-template-columns: 1.15fr 0.95fr 0.85fr;
  gap: 18px;
  align-items: stretch;
}

.frame-card,
.postcard-card {
  padding: 22px;
  border: 1px solid rgba(74, 103, 65, 0.14);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.78);
}

.paper-frame {
  padding: 16px 16px 54px;
  border-radius: 8px;
  background: #f9f6ef;
  box-shadow: 0 12px 30px rgba(26, 26, 24, 0.12);
  position: relative;
}

.paper-frame > img {
  aspect-ratio: 1.4;
  border-radius: 8px;
}

.paper-caption {
  position: absolute;
  left: 20px;
  right: 20px;
  bottom: 15px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--green);
  font-family: "Noto Serif SC", "Songti SC", "SimSun", serif;
  font-size: 14px;
}

.qr-mark {
  width: 34px;
  height: 34px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  padding: 3px;
  border-radius: 4px;
  background: #ffffff;
}

.qr-mark i {
  background: var(--green);
}

.qr-mark i:nth-child(2),
.qr-mark i:nth-child(4),
.qr-mark i:nth-child(8) {
  background: var(--line);
}

.postcard-card > img {
  border-radius: 8px;
  aspect-ratio: 1.35;
}

.postcard-card > div {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 14px;
  color: var(--muted);
  font-size: 14px;
}

.ops-card {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 100%;
  padding: 28px;
  background:
    linear-gradient(180deg, rgba(74, 103, 65, 0.08), rgba(74, 103, 65, 0)),
    #ffffff;
}

.ops-label {
  width: max-content;
  padding: 8px 13px;
  border-radius: 999px;
  background: var(--green);
  color: #ffffff;
  font-size: 13px;
  font-weight: 700;
}

.trust-section {
  background: var(--paper);
}

.trust-panel {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 40px;
  padding: 48px;
  border-radius: 8px;
  background: var(--green);
  color: #ffffff;
}

.trust-panel .eyebrow {
  color: rgba(255, 255, 255, 0.74);
}

.trust-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.trust-list article {
  padding: 22px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
}

.trust-list p {
  color: rgba(255, 255, 255, 0.76);
}

.site-footer {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr 1fr;
  gap: 34px;
  padding: 46px max(24px, calc((100vw - 1120px) / 2)) 52px;
  border-top: 1px solid var(--line);
  background: var(--warm);
  color: var(--muted);
}

.footer-brand {
  margin-bottom: 16px;
}

.site-footer p,
.site-footer span {
  margin: 0;
  font-size: 13px;
  line-height: 1.8;
}

.site-footer address,
.filings {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-style: normal;
}

@media (max-width: 920px) {
  .site-header {
    top: 10px;
    width: calc(100% - 20px);
  }

  .nav-links {
    display: none;
  }

  .hero {
    min-height: 86vh;
    padding: 108px 22px 56px;
  }

  .intro-section,
  .features-section,
  .scenes-section,
  .materials-section,
  .trust-section {
    padding: 64px 20px;
  }

  .product-flow,
  .feature-layout,
  .scene-grid,
  .materials-layout,
  .trust-panel,
  .site-footer {
    grid-template-columns: 1fr;
  }

  .gallery-grid {
    grid-template-columns: 1fr 1fr;
    grid-auto-rows: 220px;
  }

  .feature-layout {
    gap: 28px;
  }

  .phone-showcase {
    order: -1;
  }

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

@media (max-width: 620px) {
  .site-header {
    min-height: 54px;
    padding: 8px 10px 8px 12px;
  }

  .brand-mark strong {
    font-size: 16px;
  }

  .leaf-logo {
    width: 30px;
    height: 30px;
  }

  .nav-contact {
    min-height: 38px;
    padding: 0 13px;
    font-size: 13px;
  }

  .hero {
    min-height: 84vh;
  }

  .hero h1 {
    font-size: 42px;
  }

  .hero-title-sub {
    font-size: 25px;
  }

  .hero-actions {
    width: 100%;
  }

  .primary-action,
  .secondary-action {
    flex: 1 1 150px;
  }

  .section-heading h2,
  .trust-panel h2 {
    font-size: 30px;
  }

  .product-flow,
  .feature-list {
    grid-template-columns: 1fr;
  }

  .gallery-band {
    padding-bottom: 56px;
  }

  .gallery-grid {
    grid-template-columns: 1fr;
    grid-auto-rows: 260px;
  }

  .gallery-grid figure:first-child {
    grid-row: auto;
  }

  .materials-layout {
    gap: 14px;
  }

  .trust-panel {
    padding: 30px 22px;
  }
}