:root {
  --zf-bg: #f3eee5;
  --zf-panel: #f9f5ed;
  --zf-panel-deep: #e7ddcd;
  --zf-text: #1f2923;
  --zf-heading: #19372d;
  --zf-soft: #626a63;
  --zf-muted: #858b84;
  --zf-green: #214437;
  --zf-green-dark: #16352b;
  --zf-gold: #b79a63;
  --zf-line: rgba(31, 41, 35, 0.16);
  --zf-shadow: 0 22px 55px rgba(35, 45, 38, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
  background: var(--zf-bg);
  color: var(--zf-text);
  font-size: 16px;
  line-height: 1.78;
  line-break: strict;
  word-break: normal;
  text-rendering: optimizeLegibility;
}

body.zf-menu-open {
  overflow: hidden;
}

img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

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

button,
input,
select,
textarea {
  font: inherit;
}

.zf-container {
  width: min(1220px, calc(100% - 56px));
  margin: 0 auto;
}

.zf-site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  height: 72px;
  border-bottom: 1px solid rgba(33, 68, 55, 0.08);
  background: rgba(243, 238, 229, 0.72);
  backdrop-filter: blur(18px);
  transition: box-shadow 180ms ease, background 180ms ease;
}

.zf-site-header.zf-scrolled {
  background: rgba(243, 238, 229, 0.94);
  box-shadow: 0 12px 34px rgba(35, 45, 38, 0.045);
}

.zf-header-inner {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.zf-brand {
  display: inline-flex;
  align-items: center;
  gap: 13px;
  min-width: 300px;
}

.zf-brand-mark {
  width: 36px;
  height: 36px;
  object-fit: contain;
  flex: 0 0 auto;
}

.zf-brand-text {
  display: grid;
  gap: 2px;
}

.zf-brand-name {
  color: var(--zf-heading);
  font-size: 16px;
  line-height: 1.1;
  font-weight: 600;
  letter-spacing: 0;
  white-space: nowrap;
}

.zf-brand-sub {
  color: var(--zf-muted);
  font-size: 9px;
  line-height: 1.3;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
}

.zf-nav {
  display: flex;
  align-items: center;
  gap: 22px;
  color: #33443b;
  font-size: 14px;
  white-space: nowrap;
}

.zf-nav a {
  transition: color 160ms ease;
}

.zf-nav a:hover,
.zf-nav a.zf-active {
  color: var(--zf-gold);
}

.zf-header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.zf-menu-button {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--zf-line);
  border-radius: 999px;
  background: rgba(251, 248, 241, 0.78);
  color: var(--zf-green);
  cursor: pointer;
}

.zf-menu-button span {
  display: block;
  width: 17px;
  height: 1px;
  margin: 5px auto;
  background: currentColor;
}

.zf-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: 999px;
  cursor: pointer;
  font-size: 14px;
  line-height: 1;
  white-space: nowrap;
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease;
}

.zf-button:hover {
  transform: translateY(-1px);
}

.zf-button-primary {
  background: var(--zf-green);
  color: #fff;
}

.zf-button-primary:hover {
  background: var(--zf-green-dark);
}

.zf-button-secondary {
  border-color: var(--zf-line);
  background: transparent;
  color: var(--zf-green);
}

.zf-button-muted {
  border-color: rgba(255, 255, 255, 0.28);
  background: transparent;
  color: rgba(255, 255, 255, 0.78);
}

.zf-button-ivory {
  border-color: rgba(255, 248, 235, 0.92);
  background: #f4eadb;
  color: var(--zf-green-dark);
}

.zf-button-ivory:hover {
  background: #fff4e5;
}

.zf-section {
  padding: 110px 0;
}

.zf-hero {
  padding: 72px 0 116px;
}

.zf-hero-grid {
  display: grid;
  grid-template-columns: minmax(430px, 0.44fr) minmax(0, 0.56fr);
  align-items: center;
  gap: 68px;
}

.zf-kicker {
  margin: 0 0 18px;
  color: var(--zf-gold);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  line-height: 1.4;
  text-transform: uppercase;
  text-wrap: balance;
}

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

h1,
h2,
h3,
.zf-lead,
.zf-copy,
.zf-system-item p,
.zf-entry p,
.zf-case p,
.zf-process p,
.zf-list li,
.zf-contact-note {
  line-break: strict;
  overflow-wrap: normal;
  word-break: auto-phrase;
}

h1,
h2,
h3 {
  text-wrap: balance;
}

h1 {
  max-width: 570px;
  margin-bottom: 24px;
  color: var(--zf-heading);
  font-size: 40px;
  line-height: 1.22;
  font-weight: 500;
  letter-spacing: 0;
}

h2 {
  max-width: 760px;
  margin-bottom: 22px;
  color: var(--zf-heading);
  font-size: 32px;
  line-height: 1.24;
  font-weight: 500;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 12px;
  color: var(--zf-heading);
  font-size: 20px;
  line-height: 1.35;
  font-weight: 500;
  letter-spacing: 0;
}

.zf-lead {
  max-width: 680px;
  margin-bottom: 20px;
  color: #33443b;
  font-size: 18px;
  line-height: 1.76;
}

.zf-copy {
  max-width: 680px;
  color: var(--zf-soft);
  font-size: 16px;
  line-height: 1.82;
}

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

.zf-media {
  overflow: hidden;
  border-radius: 12px;
  background: #e8dfd0;
  box-shadow: var(--zf-shadow);
}

.zf-media img {
  transition: transform 400ms ease;
}

.zf-media:hover img {
  transform: scale(1.015);
}

.zf-media-hero {
  aspect-ratio: 1.54 / 1;
}

.zf-media-wide {
  aspect-ratio: 16 / 9;
}

.zf-media-tile {
  height: 300px;
  border-radius: 8px;
  box-shadow: none;
}

.zf-philosophy {
  border-top: 1px solid var(--zf-line);
  border-bottom: 1px solid var(--zf-line);
  background: rgba(249, 245, 237, 0.34);
}

.zf-text-grid,
.zf-split {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(0, 1.12fr);
  align-items: center;
  gap: 78px;
}

.zf-quiet-lines {
  margin-top: 34px;
  color: var(--zf-heading);
  font-size: 22px;
  line-height: 1.7;
}

.zf-system-band {
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--zf-line);
  border-bottom: 1px solid var(--zf-line);
  background: transparent;
}

.zf-system-item {
  min-height: 260px;
  padding: 34px 30px 34px 0;
  border-right: 1px solid var(--zf-line);
}

.zf-system-item:last-child {
  border-right: 0;
  padding-right: 0;
}

.zf-system-item + .zf-system-item {
  padding-left: 30px;
}

.zf-system-label {
  display: block;
  margin-bottom: 18px;
  color: var(--zf-gold);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.zf-system-item p,
.zf-entry p,
.zf-case p,
.zf-process p,
.zf-footer p {
  margin-bottom: 0;
  color: var(--zf-soft);
  font-size: 15px;
  line-height: 1.76;
}

.zf-capsules {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 28px 0 18px;
}

.zf-capsules span {
  border: 1px solid var(--zf-line);
  border-radius: 999px;
  padding: 6px 12px;
  background: rgba(251, 248, 241, 0.72);
  color: #536059;
  font-size: 13px;
  line-height: 1;
  white-space: nowrap;
}

.zf-climate-tag {
  display: inline-flex;
  margin-top: 8px;
  border-radius: 999px;
  padding: 8px 14px;
  background: var(--zf-panel-deep);
  color: var(--zf-heading);
  font-size: 13px;
  white-space: nowrap;
}

.zf-entry-grid,
.zf-case-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 34px;
  margin-top: 50px;
}

.zf-entry,
.zf-case {
  min-width: 0;
}

.zf-entry h3 {
  margin-top: 22px;
}

.zf-text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 18px;
  color: var(--zf-green);
  font-size: 14px;
  line-height: 1.3;
  transition: gap 160ms ease, color 160ms ease;
}

.zf-text-link:hover {
  gap: 10px;
  color: var(--zf-gold);
}

.zf-process {
  display: grid;
  gap: 0;
  margin-top: 34px;
  border-top: 1px solid var(--zf-line);
}

.zf-process-row {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 20px;
  padding: 16px 0;
  border-bottom: 1px solid var(--zf-line);
}

.zf-process-row span {
  color: var(--zf-gold);
  font-size: 13px;
  letter-spacing: 0.08em;
}

.zf-panel-dark {
  border-radius: 28px;
  padding: 72px 76px;
  border: 1px solid rgba(244, 234, 219, 0.16);
  background:
    radial-gradient(circle at top right, rgba(214, 183, 121, 0.16), transparent 32%),
    linear-gradient(135deg, #214437 0%, #1c4033 54%, #17362c 100%);
  box-shadow: 0 24px 54px rgba(22, 39, 32, 0.14);
  color: #fff;
}

.zf-panel-dark h2 {
  color: #fff;
}

.zf-panel-dark .zf-copy {
  color: rgba(255, 255, 255, 0.78);
}

.zf-diagnosis-panel {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(280px, 0.7fr);
  gap: 48px;
  align-items: end;
}

.zf-diagnosis-copy {
  min-width: 0;
}

.zf-diagnosis-copy .zf-actions {
  margin-top: 38px;
}

.zf-diagnosis-aside {
  padding: 28px 28px 30px;
  border: 1px solid rgba(244, 234, 219, 0.14);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.04);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.zf-diagnosis-label {
  margin: 0 0 16px;
  color: rgba(244, 234, 219, 0.72);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.zf-diagnosis-note {
  margin: 0;
  color: rgba(255, 255, 255, 0.76);
  font-size: 15px;
  line-height: 1.9;
}

.zf-text-link-light {
  margin-top: 22px;
  color: #f4eadb;
}

.zf-text-link-light:hover {
  color: #fff4e5;
}

.zf-page-hero {
  padding: 92px 0 104px;
}

.zf-page-intro {
  max-width: 780px;
}

.zf-feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 44px;
  margin-top: 54px;
}

.zf-feature {
  padding-top: 26px;
  border-top: 1px solid var(--zf-line);
}

.zf-list {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  color: var(--zf-soft);
  font-size: 15px;
  line-height: 1.82;
}

.zf-list li {
  padding: 8px 0;
  border-bottom: 1px solid rgba(33, 68, 55, 0.09);
}

.zf-case {
  padding-top: 26px;
  border-top: 1px solid var(--zf-line);
}

.zf-case b {
  display: block;
  margin: 18px 0 6px;
  color: var(--zf-heading);
  font-size: 14px;
  font-weight: 500;
}

.zf-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px 34px;
  margin-top: 46px;
  padding-top: 28px;
  border-top: 1px solid var(--zf-line);
}

.zf-field {
  display: grid;
  gap: 8px;
}

.zf-field label {
  color: var(--zf-heading);
  font-size: 14px;
}

.zf-field input,
.zf-field select,
.zf-field textarea {
  width: 100%;
  min-height: 48px;
  border: 0;
  border-bottom: 1px solid var(--zf-line);
  border-radius: 0;
  padding: 10px 0;
  background: transparent;
  color: var(--zf-text);
  outline: none;
}

.zf-field textarea {
  min-height: 132px;
  resize: vertical;
}

.zf-field-wide {
  grid-column: 1 / -1;
}

.zf-form-status {
  min-height: 24px;
  margin: 16px 0 0;
  color: var(--zf-soft);
  font-size: 14px;
  line-height: 1.7;
}

.zf-footer {
  padding: 64px 0;
  border-top: 1px solid var(--zf-line);
}

.zf-hero-note {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  gap: 18px;
  margin-top: 42px;
  padding-top: 24px;
  border-top: 1px solid var(--zf-line);
  color: var(--zf-soft);
  font-size: 14px;
  line-height: 1.72;
}

.zf-hero-note span {
  color: var(--zf-gold);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.zf-editorial-head {
  display: grid;
  grid-template-columns: minmax(0, 0.54fr) minmax(0, 0.46fr);
  gap: 70px;
  align-items: end;
  margin-bottom: 36px;
}

.zf-image-strip {
  display: grid;
  grid-template-columns: minmax(0, 0.56fr) minmax(0, 0.44fr);
  gap: 28px;
  margin-top: 54px;
  align-items: end;
}

.zf-image-strip .zf-media:first-child {
  aspect-ratio: 16 / 9;
}

.zf-image-strip .zf-media:last-child {
  aspect-ratio: 4 / 5;
}

.zf-system-code {
  display: block;
  margin-top: 34px;
  color: var(--zf-muted);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.zf-keep {
  display: inline-block;
  max-width: 100%;
  white-space: nowrap;
  vertical-align: baseline;
}

.zf-contact-hero {
  align-items: start;
}

.zf-contact-aside {
  display: grid;
  gap: 18px;
}

.zf-contact-aside .zf-media {
  aspect-ratio: 4 / 3;
}

.zf-contact-note {
  padding-top: 22px;
  border-top: 1px solid var(--zf-line);
  color: var(--zf-soft);
  font-size: 15px;
  line-height: 1.78;
}

.zf-footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 32px;
}

.zf-footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  color: var(--zf-muted);
  font-size: 14px;
}

@media (max-width: 1080px) {
  .zf-nav {
    gap: 13px;
    font-size: 13px;
  }

  .zf-brand {
    min-width: 270px;
  }

  .zf-hero-grid,
  .zf-text-grid,
  .zf-split {
    gap: 48px;
  }
}

@media (max-width: 980px) {
  .zf-nav {
    position: fixed;
    inset: 72px 0 auto 0;
    display: none;
    grid-template-columns: 1fr;
    gap: 0;
    padding: 18px 24px 28px;
    border-bottom: 1px solid var(--zf-line);
    background: rgba(247, 243, 235, 0.98);
  }

  body.zf-menu-open .zf-nav {
    display: grid;
  }

  .zf-nav a {
    padding: 14px 0;
    border-bottom: 1px solid rgba(33, 68, 55, 0.09);
  }

  .zf-menu-button {
    display: inline-block;
  }

  .zf-hero-grid,
  .zf-text-grid,
  .zf-split,
  .zf-editorial-head,
  .zf-image-strip,
  .zf-diagnosis-panel {
    grid-template-columns: 1fr;
  }

  .zf-system-band,
  .zf-feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .zf-system-item:nth-child(2) {
    border-right: 0;
  }

  .zf-system-item:nth-child(1),
  .zf-system-item:nth-child(2) {
    border-bottom: 1px solid var(--zf-line);
  }

  .zf-system-item:nth-child(3) {
    padding-left: 0;
  }

  .zf-entry-grid,
  .zf-case-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .zf-container {
    width: min(100% - 28px, 1220px);
  }

  .zf-section,
  .zf-hero,
  .zf-page-hero {
    padding: 64px 0;
  }

  .zf-header-actions .zf-button {
    min-height: 42px;
    padding: 0 15px;
  }

  .zf-brand-sub {
    display: block;
  }

  .zf-brand {
    min-width: 0;
    gap: 9px;
  }

  .zf-brand-mark {
    width: 30px;
    height: 30px;
  }

  .zf-brand-name {
    font-size: 14px;
  }

  .zf-brand-sub {
    font-size: 7px;
    letter-spacing: 0.05em;
  }

  h1 {
    font-size: 30px;
    line-height: 1.26;
  }

  h2 {
    font-size: 25px;
    line-height: 1.3;
  }

  h3 {
    font-size: 19px;
  }

  .zf-lead {
    font-size: 16px;
  }

  .zf-system-band,
  .zf-feature-grid,
  .zf-form {
    grid-template-columns: 1fr;
  }

  .zf-system-item {
    min-height: auto;
    padding: 26px 0;
    border-right: 0;
    border-bottom: 1px solid var(--zf-line);
  }

  .zf-system-item + .zf-system-item {
    padding-left: 0;
  }

  .zf-system-item:last-child {
    border-bottom: 0;
  }

  .zf-panel-dark {
    padding: 38px 24px;
  }

  .zf-diagnosis-aside {
    padding: 22px 20px 24px;
    border-radius: 18px;
  }

  .zf-media-tile {
    height: 240px;
  }

  .zf-hero-note {
    grid-template-columns: 1fr;
  }

  .zf-climate-tag {
    white-space: normal;
  }

  .zf-footer-inner {
    display: grid;
  }
}