:root {
  --ink: #0e151b;
  --ink-2: #1c2a35;
  --muted: #66717d;
  --line: #d8e0e6;
  --soft: #f3f6f7;
  --paper: #ffffff;
  --teal: #0d766f;
  --teal-dark: #0a5d58;
  --gold: #bd8b48;
  --silver: #8ea0ad;
  --red: #b42318;
  --shadow: 0 24px 70px rgba(14, 21, 27, 0.15);
  --radius: 6px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(180deg, rgba(243, 246, 247, 0.72), rgba(255, 255, 255, 0) 360px),
    var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
  letter-spacing: 0;
}

button,
input,
textarea,
select {
  font: inherit;
  letter-spacing: 0;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  border-bottom: 1px solid rgba(216, 224, 230, 0.7);
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(18px);
}

.site-header.scrolled {
  box-shadow: 0 16px 36px rgba(14, 21, 27, 0.08);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  max-width: 1240px;
  min-height: 68px;
  margin: 0 auto;
  padding: 0 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  min-width: max-content;
  max-width: none;
}

.brand-mark {
  position: relative;
  display: inline-flex;
  flex: 0 0 auto;
  min-width: max-content;
  max-width: none;
  height: 44px;
  align-items: center;
  justify-content: center;
  padding: 0 19px;
  border: 1px solid rgba(255, 255, 255, 0.32);
  border-radius: 999px;
  background:
    linear-gradient(140deg, rgba(255, 255, 255, 0.2), rgba(255, 255, 255, 0) 38%),
    linear-gradient(135deg, #082f2f 0%, var(--teal-dark) 58%, #bd8b48 128%);
  color: #fff;
  font-size: 15px;
  font-weight: 900;
  letter-spacing: 0;
  white-space: nowrap;
  overflow: visible;
  text-overflow: clip;
  box-shadow:
    0 15px 32px rgba(8, 82, 76, 0.18),
    inset 0 1px 0 rgba(255, 255, 255, 0.24),
    inset 0 -10px 18px rgba(2, 20, 24, 0.12);
}

.main-nav {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  align-items: center;
  flex: 1 1 auto;
  gap: 4px;
  width: auto;
  max-width: 780px;
  min-width: 0;
  margin-left: auto;
  padding: 4px;
  border: 1px solid rgba(216, 224, 230, 0.72);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.62);
  box-shadow: 0 16px 38px rgba(14, 21, 27, 0.055);
  backdrop-filter: blur(14px);
}

.main-nav a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 36px;
  padding: 0 6px;
  border: 1px solid transparent;
  border-radius: 999px;
  color: var(--ink-2);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0;
  white-space: nowrap;
}

.main-nav a:hover,
.main-nav a.active {
  background: linear-gradient(135deg, rgba(13, 118, 111, 0.12), rgba(189, 139, 72, 0.08));
  color: var(--teal-dark);
}

.hero {
  position: relative;
  min-height: calc(100vh - 78px);
  overflow: hidden;
  background: var(--ink);
}

.hero > img,
.page-hero > img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.012);
}

.hero-shade {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 72% 18%, rgba(189, 139, 72, 0.14), transparent 30%),
    linear-gradient(90deg, rgba(14, 21, 27, 0.93) 0%, rgba(14, 21, 27, 0.74) 46%, rgba(14, 21, 27, 0.24) 100%),
    linear-gradient(180deg, rgba(14, 21, 27, 0.1), rgba(14, 21, 27, 0.35));
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: 1240px;
  min-height: calc(100vh - 78px);
  margin: 0 auto;
  padding: 72px 28px 72px;
}

.hero-kicker {
  width: fit-content;
  margin-bottom: 28px;
  padding: 10px 14px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.88);
  font-size: 14px;
  border-radius: var(--radius);
}

.hero h1 {
  max-width: 780px;
  margin: 0;
  color: #fff;
  font-size: clamp(44px, 6vw, 82px);
  font-weight: 920;
  line-height: 0.98;
}

.hero p {
  max-width: 680px;
  margin: 28px 0 0;
  color: rgba(255, 255, 255, 0.78);
  font-size: 18px;
  line-height: 1.82;
}

.hero-buttons {
  position: relative;
  z-index: 2;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 36px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-weight: 900;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

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

.btn.primary {
  background: linear-gradient(135deg, var(--teal), var(--teal-dark));
  border-color: rgba(255, 255, 255, 0.1);
  color: #fff;
  box-shadow: 0 16px 36px rgba(13, 118, 111, 0.22);
}

.btn.glass {
  border-color: rgba(255, 255, 255, 0.28);
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  backdrop-filter: blur(10px);
}

.btn.ghost,
.btn.outline {
  border-color: var(--line);
  background: #fff;
  color: var(--ink);
}

.hero-stats {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  max-width: 680px;
  width: 100%;
  margin-top: 34px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(14px);
  border-radius: var(--radius);
  overflow: hidden;
}

.hero-stats div {
  padding: 22px 24px;
  border-right: 1px solid rgba(255, 255, 255, 0.14);
}

.hero-stats div:last-child {
  border-right: 0;
}

.hero-stats strong {
  display: block;
  color: #fff;
  font-size: 32px;
  line-height: 1;
}

.hero-stats span {
  display: block;
  margin-top: 9px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 13px;
}

.action-section,
.listing-section,
.detail-section,
.contact-section {
  max-width: 1240px;
  margin: 0 auto;
  padding: 86px 28px;
}

.section-head {
  display: grid;
  grid-template-columns: minmax(160px, 0.35fr) minmax(0, 0.65fr);
  align-items: end;
  gap: 30px;
  margin-bottom: 34px;
}

.section-head span,
.split-copy span,
.page-hero-content span,
.detail-copy > span,
.contact-info > span,
.form-title span {
  color: var(--teal-dark);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.section-head h2,
.split-copy h2,
.contact-info h2,
.form-title h2 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(28px, 3.5vw, 48px);
  line-height: 1.1;
}

.action-grid,
.listing-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.action-card,
.listing-card {
  overflow: hidden;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: var(--radius);
  box-shadow: 0 18px 44px rgba(14, 21, 27, 0.06);
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.action-card:hover,
.listing-card:hover {
  transform: translateY(-4px);
  border-color: rgba(13, 118, 111, 0.36);
  box-shadow: var(--shadow);
}

.action-card img,
.listing-card img {
  width: 100%;
  height: 270px;
  object-fit: cover;
  filter: saturate(0.94) contrast(1.04);
  transition: transform 0.28s ease;
}

.action-card:hover img,
.listing-card:hover img {
  transform: scale(1.035);
}

.action-card div,
.listing-card div {
  padding: 25px;
}

.action-card h3,
.listing-card h3 {
  margin: 0;
  color: var(--ink);
  font-size: 22px;
  line-height: 1.2;
}

.action-card p,
.listing-card p {
  min-height: 58px;
  margin: 12px 0 18px;
  color: var(--muted);
  line-height: 1.68;
}

.action-card span,
.listing-card span,
.text-arrow {
  color: var(--teal-dark);
  font-weight: 900;
}

.split-band {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  min-height: 540px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.52), rgba(255, 255, 255, 0)),
    var(--soft);
}

.split-band.reverse {
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  background: #fff;
}

.split-band.reverse .split-copy {
  order: 2;
}

.split-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 78px max(28px, calc((100vw - 1240px) / 2 + 28px));
}

.split-copy p {
  max-width: 580px;
  margin: 22px 0 26px;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.85;
}

.split-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-hero {
  position: relative;
  display: grid;
  align-items: end;
  min-height: 430px;
  overflow: hidden;
  background: var(--ink);
}

.page-hero-shade {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 72% 16%, rgba(189, 139, 72, 0.16), transparent 32%),
    linear-gradient(90deg, rgba(14, 21, 27, 0.9), rgba(14, 21, 27, 0.38));
}

.page-hero-content {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 28px 76px;
}

.page-hero-content span {
  color: rgba(255, 255, 255, 0.74);
}

.page-hero-content h1 {
  max-width: 760px;
  margin: 12px 0 0;
  color: #fff;
  font-size: clamp(42px, 5vw, 70px);
  line-height: 1;
}

.page-hero-content p {
  max-width: 720px;
  margin: 20px 0 0;
  color: rgba(255, 255, 255, 0.76);
  font-size: 17px;
  line-height: 1.75;
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 28px;
}

.filters a {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 0 17px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink-2);
  font-weight: 900;
  border-radius: var(--radius);
}

.filters a.active {
  border-color: var(--teal);
  background: var(--teal);
  color: #fff;
}

.detail-section {
  padding-top: 48px;
}

.back-link {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  margin-bottom: 24px;
  padding: 0 14px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--teal-dark);
  font-weight: 900;
}

.detail-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(360px, 0.92fr);
  gap: 44px;
  align-items: center;
}

.detail-image {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.detail-image img {
  width: 100%;
  height: min(62vh, 620px);
  min-height: 430px;
  object-fit: cover;
}

.detail-copy h1 {
  margin: 12px 0 18px;
  font-size: clamp(36px, 4vw, 58px);
  line-height: 1.04;
}

.detail-copy p {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.85;
}

.spec-list {
  margin: 28px 0;
  border-top: 1px solid var(--line);
}

.spec-list div {
  display: grid;
  grid-template-columns: 128px minmax(0, 1fr);
  gap: 18px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.spec-list dt {
  color: var(--muted);
  font-weight: 900;
}

.spec-list dd {
  margin: 0;
  font-weight: 850;
}

.detail-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(300px, 0.82fr) minmax(0, 1.18fr);
  gap: 24px;
  align-items: start;
}

.contact-info,
.contact-form-panel {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: var(--radius);
  box-shadow: 0 20px 58px rgba(14, 21, 27, 0.08);
}

.contact-info {
  padding: 32px;
  background:
    linear-gradient(135deg, rgba(13, 118, 111, 0.08), rgba(189, 139, 72, 0.06)),
    #fff;
}

.contact-info h2 {
  margin-top: 10px;
  font-size: 34px;
}

.contact-info ul {
  display: grid;
  gap: 16px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.contact-info li {
  padding: 16px;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: var(--radius);
}

.contact-info strong {
  display: block;
  color: var(--teal-dark);
  font-size: 13px;
}

.contact-info p {
  margin: 8px 0 0;
  color: var(--ink-2);
  line-height: 1.7;
}

.contact-form-panel {
  padding: 32px;
}

.form-title {
  margin-bottom: 22px;
}

.form-title h2 {
  margin-top: 8px;
}

.contact-form {
  display: grid;
  gap: 16px;
}

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

.contact-form label {
  display: grid;
  gap: 8px;
}

.contact-form span {
  color: var(--ink-2);
  font-size: 13px;
  font-weight: 900;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  background: #fff;
  outline: none;
  border-radius: var(--radius);
}

.contact-form input {
  height: 46px;
  padding: 0 13px;
}

.contact-form textarea {
  padding: 12px 13px;
  resize: vertical;
  line-height: 1.65;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(13, 118, 111, 0.12);
}

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

.success-message,
.error-message {
  margin-bottom: 16px;
  padding: 14px 16px;
  font-weight: 900;
  border-radius: var(--radius);
}

.success-message {
  background: rgba(13, 118, 111, 0.09);
  color: var(--teal-dark);
}

.error-message {
  background: #fff2f0;
  color: var(--red);
}

.empty-page {
  min-height: 60vh;
  display: grid;
  place-content: center;
  text-align: center;
}

.site-footer {
  background: var(--ink);
  color: #fff;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.2fr 0.7fr 1fr;
  gap: 42px;
  max-width: 1240px;
  margin: 0 auto;
  padding: 58px 28px;
}

.footer-inner strong {
  font-size: 22px;
}

.footer-inner p,
.footer-inner a {
  color: rgba(255, 255, 255, 0.72);
  line-height: 1.7;
}

.footer-inner span {
  display: block;
  margin-bottom: 14px;
  color: rgba(255, 255, 255, 0.92);
  font-weight: 900;
}

.footer-inner a {
  display: block;
  margin-bottom: 10px;
}

.footer-bottom {
  max-width: 1240px;
  margin: 0 auto;
  padding: 18px 28px 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  color: rgba(255, 255, 255, 0.52);
  font-size: 13px;
}

@media (max-width: 980px) {
  .topbar {
    align-items: center;
    flex-wrap: nowrap;
    gap: 12px;
    padding-top: 10px;
    padding-bottom: 10px;
  }

  .main-nav {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    width: auto;
    max-width: none;
    gap: 4px;
  }

  .main-nav a {
    width: 100%;
    min-height: 40px;
    padding: 0 5px;
  }

  .section-head,
  .split-band,
  .split-band.reverse,
  .detail-layout,
  .contact-section,
  .footer-inner {
    grid-template-columns: 1fr;
  }

  .split-band.reverse .split-copy {
    order: 0;
  }

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

@media (max-width: 680px) {
  .topbar {
    flex-wrap: nowrap;
    min-height: 0;
    padding: 8px 8px 9px;
    gap: 6px;
  }

  .brand {
    flex: 0 0 auto;
    width: auto;
    min-width: max-content;
    max-width: none;
  }

  .brand-mark {
    width: auto;
    max-width: none;
    min-width: max-content;
    height: 38px;
    padding: 0 11px;
    font-size: 12px;
  }

  .main-nav {
    flex: 1 1 auto;
    width: auto;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 2px;
    padding: 3px;
  }

  .main-nav a {
    min-height: 32px;
    padding: 0 1px;
    font-size: 11px;
    font-weight: 900;
  }

  .hero,
  .hero-inner {
    min-height: 760px;
  }

  .hero-inner,
  .action-section,
  .listing-section,
  .detail-section,
  .contact-section,
  .page-hero-content {
    padding-right: 18px;
    padding-left: 18px;
  }

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

  .hero-stats {
    grid-template-columns: 1fr;
    width: 100%;
    margin-top: 34px;
  }

  .hero-stats div {
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.14);
  }

  .hero-stats div:last-child {
    border-bottom: 0;
  }

  .action-grid,
  .listing-grid,
  .form-grid {
    grid-template-columns: 1fr;
  }

  .action-card img,
  .listing-card img {
    height: 230px;
  }

  .split-copy {
    padding: 54px 18px;
  }

  .detail-image img {
    min-height: 320px;
  }

  .spec-list div {
    grid-template-columns: 1fr;
    gap: 6px;
  }
}

@media (max-width: 360px) {
  .topbar {
    flex-wrap: wrap;
    gap: 7px;
  }

  .brand {
    width: 100%;
    justify-content: center;
  }

  .brand-mark {
    max-width: 100%;
    padding: 0 15px;
    font-size: 12px;
  }

  .main-nav {
    flex-basis: 100%;
    width: 100%;
  }
}