:root {
  --green-forest: #0A3D2C;
  --green-deep: #062019;
  --green-ivy: #145A45;
  --green-moss: #3D7B62;
  --gold-champion: #D4AF37;
  --gold-bright: #E8C84A;
  --gold-bronze: #B8962E;
  --cream: #F5F5DC;
  --sand: #E8E4C9;
  --ink: #1A1A1A;

  --font-heading: "Playfair Display", "Noto Serif SC", "Songti SC", Georgia, "Times New Roman", serif;
  --font-body: "Noto Sans SC", "Inter", "PingFang SC", "Microsoft YaHei", Helvetica, Arial, sans-serif;
  --font-mono: "Roboto Mono", "SF Mono", "Cascadia Mono", Consolas, monospace;

  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 8px;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --shadow-float: 0 10px 30px rgba(6, 32, 25, 0.22);
  --shadow-panel: 0 4px 18px rgba(6, 32, 25, 0.12);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  background-color: var(--cream);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--green-forest);
}

h1 {
  font-size: clamp(2rem, 4vw, 3.25rem);
}

h2 {
  font-size: clamp(1.5rem, 2.6vw, 2.25rem);
}

h3 {
  font-size: clamp(1.15rem, 1.6vw, 1.5rem);
}

p {
  margin-bottom: 1em;
}

a {
  color: var(--green-ivy);
  text-decoration: none;
  transition: color 0.25s ease, background-color 0.25s ease, border-color 0.25s ease;
}

a:hover {
  color: var(--gold-bronze);
}

ul, ol {
  list-style: none;
}

img, svg, video {
  display: block;
  max-width: 100%;
  height: auto;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

.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;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 20px;
  z-index: 9999;
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 600;
  background: var(--green-forest);
  color: var(--cream);
  border-radius: 999px;
  box-shadow: var(--shadow-float);
  transform: translateY(-200%);
  transition: transform 0.3s var(--ease-out);
}

.skip-link:focus {
  transform: translateY(0);
}

:focus-visible {
  outline: 2px solid var(--gold-bright);
  outline-offset: 3px;
  border-radius: 4px;
}

.container {
  width: min(1200px, calc(100% - 48px));
  margin-inline: auto;
}

.content-section {
  padding: clamp(56px, 8vw, 104px) 0;
}

.prose {
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink);
}

.prose > p {
  margin-bottom: 1.25em;
}

.prose > h2 {
  margin-top: 1.6em;
  margin-bottom: 0.6em;
}

.section-lead {
  font-size: 18px;
  line-height: 1.7;
  color: var(--green-moss);
  max-width: 60ch;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.4;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: all 0.3s var(--ease-out);
}

.btn-primary {
  background: var(--green-forest);
  color: var(--cream);
}

.btn-primary:hover {
  background: var(--green-deep);
  color: var(--gold-bright);
  transform: translateY(-1px);
  box-shadow: var(--shadow-panel);
}

.btn-ghost {
  background: transparent;
  color: var(--green-forest);
  border-color: rgba(10, 61, 44, 0.35);
}

.btn-ghost:hover {
  border-color: var(--green-forest);
  background: rgba(10, 61, 44, 0.06);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  padding: 20px 0;
  font-size: 14px;
  color: var(--green-moss);
}

.breadcrumb a {
  color: var(--green-ivy);
}

.breadcrumb li + li::before {
  content: "›";
  margin-right: 6px;
  color: var(--gold-bronze);
  font-family: var(--font-mono);
}

.tag {
  display: inline-block;
  padding: 4px 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--gold-bronze);
  background: rgba(212, 175, 55, 0.1);
  border-left: 2px solid var(--gold-champion);
  border-radius: 0 6px 6px 0;
}

.media-frame {
  position: relative;
  overflow: hidden;
  background-color: var(--sand);
  border-radius: 6px 20px 6px 20px;
  aspect-ratio: 16 / 10;
}

.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease-out);
}

.media-frame:hover img {
  transform: scale(1.03);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  padding: 14px 24px;
  background: rgba(245, 245, 220, 0.88);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(10, 61, 44, 0.08);
}

.header-inner {
  max-width: 1320px;
  margin-inline: auto;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 10px 8px 16px;
  background: var(--green-forest);
  border-radius: 999px;
  box-shadow: var(--shadow-float);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  background: var(--gold-champion);
  color: var(--green-deep);
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 20px;
  border-radius: 10px 3px 10px 3px;
  line-height: 1;
  transition: background 0.3s ease, transform 0.3s ease;
}

.brand:hover .brand-mark {
  background: var(--gold-bright);
  transform: rotate(-3deg);
}

.brand-copy {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-name {
  font-family: var(--font-heading);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--cream);
}

.brand-slogan {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: rgba(245, 245, 220, 0.6);
  white-space: nowrap;
}

.main-nav {
  margin-left: auto;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  display: inline-block;
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 500;
  color: rgba(245, 245, 220, 0.8);
  border-radius: 999px;
  transition: color 0.3s ease, background 0.3s ease;
}

.nav-link:hover {
  color: var(--cream);
  background: rgba(255, 255, 255, 0.08);
}

.nav-link[aria-current="page"] {
  color: var(--gold-bright);
  background: rgba(212, 175, 55, 0.12);
}

.header-action {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 600;
  color: var(--green-deep);
  background: var(--gold-champion);
  border-radius: 999px;
  transition: background 0.3s ease, transform 0.3s ease;
}

.header-action:hover {
  background: var(--gold-bright);
  color: var(--green-deep);
  transform: translateY(-1px);
}

.action-arrow {
  font-family: var(--font-mono);
  font-size: 14px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  transition: background 0.3s ease;
}

.nav-toggle:hover {
  background: rgba(255, 255, 255, 0.15);
}

.toggle-line {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--cream);
  border-radius: 2px;
  transition: transform 0.3s var(--ease-out), opacity 0.2s ease;
}

.site-header[data-open] .nav-toggle {
  background: rgba(212, 175, 55, 0.2);
}

.site-header[data-open] .toggle-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.site-header[data-open] .toggle-line:nth-child(2) {
  opacity: 0;
}

.site-header[data-open] .toggle-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 1023px) {
  .header-inner {
    justify-content: space-between;
    padding-left: 12px;
  }

  .header-action {
    display: none;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: calc(100% + 10px);
    left: 24px;
    right: 24px;
    padding: 20px;
    background: var(--green-deep);
    border-radius: 20px;
    box-shadow: var(--shadow-float);
  }

  .site-header[data-open] .main-nav {
    display: block;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }

  .nav-link {
    display: block;
    padding: 12px 16px;
    font-size: 15px;
    color: rgba(245, 245, 220, 0.82);
    border-radius: 12px;
  }

  .nav-link[aria-current="page"] {
    background: rgba(212, 175, 55, 0.14);
  }

  .nav-toggle {
    display: flex;
  }
}

@media (max-width: 767px) {
  .site-header {
    padding: 10px 12px;
  }

  .main-nav {
    left: 12px;
    right: 12px;
  }

  .brand-slogan {
    display: none;
  }

  .brand-name {
    font-size: 15px;
  }

  .brand-mark {
    width: 34px;
    height: 34px;
    font-size: 18px;
  }
}

.site-footer {
  position: relative;
  background: var(--green-deep);
  color: rgba(245, 245, 220, 0.72);
  padding: 64px 32px 0;
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--gold-champion) 0%, rgba(212, 175, 55, 0.4) 40%, transparent 100%);
}

.site-footer::after {
  content: "";
  position: absolute;
  bottom: -120px;
  right: -100px;
  width: 320px;
  height: 320px;
  background: repeating-linear-gradient(
    -45deg,
    transparent,
    transparent 12px,
    rgba(212, 175, 55, 0.04) 12px,
    rgba(212, 175, 55, 0.04) 13px
  );
  border-radius: 50%;
}

.footer-inner {
  position: relative;
  max-width: 1320px;
  margin-inline: auto;
  display: grid;
  grid-template-columns: 2.2fr 1fr 1fr 1.6fr;
  gap: 48px;
  padding-bottom: 56px;
}

.footer-brand-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.footer-brand-mark {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  background: var(--gold-champion);
  color: var(--green-deep);
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 20px;
  border-radius: 10px 3px 10px 3px;
}

.footer-brand-name {
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 700;
  color: var(--cream);
  letter-spacing: 0.04em;
}

.footer-slogan {
  margin-top: 18px;
  font-family: var(--font-heading);
  font-style: italic;
  font-size: 18px;
  color: var(--gold-champion);
}

.footer-trust {
  margin-top: 14px;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(245, 245, 220, 0.55);
  max-width: 38ch;
}

.footer-heading {
  font-family: var(--font-heading);
  font-size: 17px;
  font-weight: 700;
  color: var(--gold-champion);
  letter-spacing: 0.06em;
  margin-bottom: 18px;
  padding-bottom: 10px;
  position: relative;
}

.footer-heading::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 30px;
  height: 2px;
  background: var(--gold-champion);
  border-radius: 2px;
}

.footer-links ul,
.footer-service ul,
.footer-contact ul {
  display: grid;
  gap: 10px;
}

.footer-links a,
.footer-service a,
.footer-contact a {
  display: inline-block;
  font-size: 14px;
  color: rgba(245, 245, 220, 0.75);
  transition: color 0.3s ease, transform 0.3s ease;
}

.footer-links a:hover,
.footer-service a:hover,
.footer-contact a:hover {
  color: var(--gold-bright);
  transform: translateX(3px);
}

.footer-contact p {
  margin-bottom: 10px;
  font-size: 14px;
  color: rgba(245, 245, 220, 0.72);
}

.footer-contact-line {
  font-family: var(--font-mono);
  font-size: 13px;
  color: rgba(245, 245, 220, 0.5);
}

.footer-bottom {
  position: relative;
  max-width: 1320px;
  margin-inline: auto;
  border-top: 1px solid rgba(245, 245, 220, 0.1);
  padding: 22px 0 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: rgba(245, 245, 220, 0.45);
}

.copyright,
.footer-icp {
  font-family: var(--font-mono);
  font-size: 13px;
}

@media (max-width: 1023px) {
  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 575px) {
  .site-footer {
    padding: 48px 20px 0;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-brand {
    grid-column: auto;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }
}

.scroll-top {
  position: fixed;
  right: 28px;
  bottom: 28px;
  z-index: 90;
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--green-forest);
  color: var(--gold-champion);
  font-size: 20px;
  box-shadow: var(--shadow-float);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease, background 0.3s ease;
}

.scroll-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.scroll-top:hover {
  background: var(--green-ivy);
  color: var(--gold-bright);
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}