:root {
  --green: #0B3D2E;
  --green-light: #3A7D5C;
  --gold: #D4AF37;
  --gold-dark: #C09A2C;
  --orange: #E67E22;
  --cream: #F5F5F0;
  --ink: #1A1A1A;
  --white: #FFFFFF;
  --header-w: 280px;
  --header-h: 68px;
  --container: 1200px;
  --radius: 6px;
  --shadow: 0 12px 40px rgba(11, 61, 46, 0.16);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Open Sans", "Source Han Sans SC", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--ink);
  background: var(--cream);
  padding-top: var(--header-h);
  -webkit-font-smoothing: antialiased;
}

body,
h1,
h2,
h3,
h4,
h5,
h6,
p,
ul,
ol,
figure {
  margin: 0;
}

ul,
ol {
  padding: 0;
  list-style: none;
}

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

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

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

::selection {
  background: var(--gold);
  color: var(--green);
}

#main-content {
  scroll-margin-top: calc(var(--header-h) + 12px);
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: "Archivo Black", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.22;
  color: var(--green);
}

h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
  font-size: 1.35rem;
}

.container {
  width: min(100%, var(--container));
  margin-inline: auto;
  padding-inline: 1.25rem;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: 0.75rem;
  z-index: 1100;
  background: var(--gold);
  color: var(--green);
  padding: 0.5rem 1rem;
  font-weight: 700;
  border-radius: 0 0 4px 4px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  transform: translateY(-180%);
  transition: transform 0.2s;
}

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

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 1200;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--gold), var(--orange));
  transform: scaleX(0);
  transform-origin: 0 50%;
  pointer-events: none;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 1000;
  background: var(--green);
  color: var(--white);
  border-bottom: 1px solid rgba(212, 175, 55, 0.35);
}

.header-inner {
  position: relative;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: "Archivo Black", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.1;
  color: var(--gold);
}

.brand-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.4rem;
  height: 2.4rem;
  background: var(--gold);
  color: var(--green);
  font-size: 0.9rem;
  font-weight: 700;
  border-radius: 4px;
  transform: rotate(-4deg);
}

.brand-name {
  font-size: 1.25rem;
  letter-spacing: 0.02em;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.8rem;
  border: 1px solid rgba(212, 175, 55, 0.55);
  border-radius: 4px;
  color: var(--white);
  background: rgba(11, 61, 46, 0.4);
}

.nav-toggle:hover {
  border-color: var(--gold);
  color: var(--gold);
}

.nav-toggle-bars {
  position: relative;
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: background 0.2s;
}

.nav-toggle-bars::before,
.nav-toggle-bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: transform 0.2s;
}

.nav-toggle-bars::before {
  top: -6px;
}

.nav-toggle-bars::after {
  top: 6px;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bars {
  background: transparent;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after {
  transform: translateY(-6px) rotate(-45deg);
}

.nav-toggle-text {
  font-size: 0.9rem;
  font-weight: 700;
}

.site-nav {
  display: flex;
  flex-direction: column;
}

.nav-list {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.nav-link {
  display: block;
  padding: 0.6rem 0.75rem;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.82);
  border-left: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s, background 0.2s, padding-left 0.2s;
}

.nav-link:hover {
  color: var(--gold);
  padding-left: 1rem;
  background: linear-gradient(90deg, rgba(212, 175, 55, 0.16), rgba(212, 175, 55, 0));
  border-left-color: var(--gold);
}

.nav-link[aria-current="page"] {
  color: var(--gold);
  border-left-color: var(--orange);
  background: linear-gradient(90deg, rgba(230, 126, 34, 0.2), rgba(230, 126, 34, 0));
}

.nav-cta {
  display: block;
  text-align: center;
  background: var(--gold);
  color: var(--green);
  font-weight: 700;
  padding: 0.75rem 1rem;
  border-radius: 4px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.18);
  transition: background 0.2s, color 0.2s, transform 0.2s, box-shadow 0.2s;
}

.nav-cta:hover {
  background: var(--orange);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(230, 126, 34, 0.28);
}

@media (min-width: 1024px) {
  body {
    padding-top: 0;
    padding-left: var(--header-w);
  }

  #main-content {
    scroll-margin-top: 12px;
  }

  .site-header {
    width: var(--header-w);
    height: 100vh;
    height: 100dvh;
    border-bottom: 0;
    border-right: 1px solid rgba(212, 175, 55, 0.4);
  }

  .header-inner {
    height: 100%;
    padding: 2.5rem 1.5rem 2rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
  }

  .brand {
    margin-bottom: 2.5rem;
  }

  .site-nav {
    flex: 1;
    gap: 2rem;
  }

  .nav-list {
    flex: 1;
  }

  .nav-cta {
    margin-top: auto;
  }

  .nav-toggle {
    display: none;
  }
}

@media (max-width: 1023px) {
  body {
    padding-top: var(--header-h);
  }

  .site-header {
    width: 100%;
    height: var(--header-h);
    display: flex;
    align-items: center;
  }

  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    height: 100%;
    padding: 0 1rem;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    bottom: 0;
    width: min(320px, 88vw);
    padding: 2rem 1.5rem;
    background: var(--green);
    border-right: 1px solid rgba(212, 175, 55, 0.4);
    box-shadow: 0 12px 36px rgba(0, 0, 0, 0.35);
    transform: translateX(-100%);
    visibility: hidden;
    overflow-y: auto;
    transition: transform 0.32s var(--ease), visibility 0.32s;
  }

  .site-nav[data-open] {
    transform: translateX(0);
    visibility: visible;
  }
}

body.nav-open {
  overflow: hidden;
}

body.nav-open::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 990;
  background: rgba(11, 61, 46, 0.42);
}

.site-footer {
  background: var(--green);
  color: rgba(255, 255, 255, 0.75);
  border-top: 2px solid var(--gold);
  margin-top: 4rem;
}

.footer-inner {
  width: min(100%, var(--container));
  margin-inline: auto;
  padding: 3rem 1.25rem 1.5rem;
}

.footer-grid {
  display: grid;
  gap: 2.5rem;
  grid-template-columns: 1fr;
}

@media (min-width: 720px) {
  .footer-grid {
    grid-template-columns: 2fr 1.2fr 1fr;
  }
}

.footer-brand {
  max-width: 26rem;
}

.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-family: "Archivo Black", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 1.5rem;
  color: var(--gold);
}

.footer-logo-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.6rem;
  height: 2.6rem;
  background: var(--gold);
  color: var(--green);
  border-radius: 4px;
  font-size: 1rem;
  font-weight: 700;
  transform: rotate(-4deg);
}

.footer-tagline {
  margin-top: 1rem;
  color: rgba(255, 255, 255, 0.65);
  max-width: 24rem;
}

.footer-column {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.footer-heading {
  color: var(--gold);
  font-size: 1rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 0.6rem;
}

.footer-contact-item {
  position: relative;
  padding-left: 1.25rem;
}

.footer-contact-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.8em;
  width: 7px;
  height: 7px;
  background: var(--gold);
  transform: rotate(45deg);
}

.footer-link {
  color: rgba(255, 255, 255, 0.8);
  padding: 0.3rem 0;
  transition: color 0.2s, padding-left 0.2s;
}

.footer-link:hover {
  color: var(--gold);
  padding-left: 0.4rem;
}

.footer-bottom {
  margin-top: 2.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.5rem;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.62);
}

.footer-copy,
.footer-icp,
.footer-contact-short {
  margin: 0;
}

.section {
  padding: 4rem 0;
}

.section-inner {
  width: min(100%, var(--container));
  margin-inline: auto;
  padding-inline: 1.25rem;
}

.section-head {
  margin-bottom: 2rem;
}

.section-number {
  display: inline-block;
  font-family: "Archivo Black", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  color: var(--orange);
  border-left: 3px solid var(--gold);
  padding-left: 0.6rem;
  margin-bottom: 0.5rem;
}

.section-kicker {
  display: table;
  color: var(--gold-dark);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.section-title {
  color: var(--green);
  text-transform: uppercase;
}

.section-copy {
  max-width: 36em;
  color: rgba(26, 26, 26, 0.78);
}

.diagonal-band {
  position: relative;
  overflow: hidden;
  background: linear-gradient(120deg, var(--green) 0%, var(--green-light) 100%);
  color: var(--white);
  padding: 4.5rem 0;
}

.diagonal-band .section-title {
  color: var(--white);
}

.diagonal-band .section-copy {
  color: rgba(255, 255, 255, 0.78);
}

.diagonal-band::before {
  content: "";
  position: absolute;
  top: 0;
  left: -10%;
  width: 120%;
  height: 100%;
  background: repeating-linear-gradient(115deg, rgba(212, 175, 55, 0.14) 0 1px, transparent 1px 16px);
  pointer-events: none;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.7rem 1.25rem;
  font-weight: 700;
  border-radius: 4px;
  transition: background 0.2s, color 0.2s, box-shadow 0.2s, transform 0.2s;
}

.btn-gold {
  background: var(--gold);
  color: var(--green);
}

.btn-gold:hover {
  background: var(--orange);
  color: var(--white);
}

.btn-outline {
  border: 1px solid var(--gold);
  color: var(--gold);
}

.btn-outline:hover {
  background: var(--gold);
  color: var(--green);
}

.grid {
  display: grid;
  gap: 1.5rem;
}

.grid-cards {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.card {
  background: var(--white);
  border: 1px solid rgba(11, 61, 46, 0.12);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: 0 3px 12px rgba(11, 61, 46, 0.06);
  transition: transform 0.25s var(--ease), border-color 0.25s, box-shadow 0.25s;
}

.card:hover {
  transform: translateY(-3px);
  border-color: rgba(212, 175, 55, 0.7);
  box-shadow: var(--shadow);
}

.data-card {
  position: relative;
  overflow: hidden;
  background: var(--green);
  color: var(--white);
  border: 1px solid rgba(212, 175, 55, 0.3);
  border-left: 4px solid var(--gold);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.data-card::after {
  content: "";
  position: absolute;
  right: -24px;
  top: -24px;
  width: 90px;
  height: 90px;
  border: 1px solid rgba(212, 175, 55, 0.3);
  transform: rotate(45deg);
}

.data-card-value {
  font-family: "Archivo Black", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 2.5rem;
  line-height: 1;
  color: var(--gold);
}

.data-card-label {
  margin-top: 0.5rem;
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.78);
}

.media-frame {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid rgba(212, 175, 55, 0.35);
  background: linear-gradient(135deg, var(--green), var(--green-light));
  min-height: 200px;
  display: flex;
}

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

.media-frame--tall {
  aspect-ratio: 4 / 5;
}

.media-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  text-align: center;
  padding: 1rem;
  background: repeating-linear-gradient(135deg, rgba(255, 255, 255, 0.03) 0 1px, transparent 1px 14px);
}

.media-caption {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.65);
  margin-top: 0.5rem;
}

.skill-path {
  position: relative;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.skill-step {
  position: relative;
  background: var(--white);
  border: 1px solid rgba(11, 61, 46, 0.12);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: transform 0.25s var(--ease), border-color 0.25s, box-shadow 0.25s;
}

.skill-step:hover {
  transform: translateY(-3px);
  border-color: rgba(212, 175, 55, 0.7);
  box-shadow: var(--shadow);
}

.skill-step-index {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.2rem;
  height: 2.2rem;
  border-radius: 50%;
  background: var(--green);
  color: var(--gold);
  font-weight: 700;
  margin-bottom: 1rem;
}

.skill-step h3 {
  font-family: "Archivo Black", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--green);
  margin-bottom: 0.5rem;
}

.skill-step p {
  color: rgba(26, 26, 26, 0.75);
  font-size: 0.95rem;
}

.skill-step-line {
  position: absolute;
  top: 1.8rem;
  left: 4.2rem;
  height: 1px;
  background: linear-gradient(90deg, var(--gold), transparent);
}

.breadcrumb {
  padding: 1.25rem 0 0.25rem;
}

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  align-items: center;
  font-size: 0.9rem;
}

.breadcrumb-list li + li::before {
  content: "/";
  margin: 0 0.25rem;
  color: rgba(26, 26, 26, 0.35);
}

.breadcrumb-link {
  color: var(--green);
  font-weight: 600;
}

.breadcrumb-link:hover {
  color: var(--orange);
}

.breadcrumb-current {
  color: rgba(26, 26, 26, 0.7);
}

.js [data-reveal] {
  opacity: 0;
  transform: translate3d(0, 24px, 0);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
  will-change: opacity, transform;
}

.js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  .js [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .scroll-progress {
    display: none;
  }
}