/* roulang page: index */
:root {
  --color-primary: #102820;
  --color-accent: #C8F04F;
  --color-bg: #F7F6F2;
  --color-ink: #1C1C1A;
  --color-sub: #3F3F3C;
  --color-faint: #8A8A85;
  --color-line: #E5E4DE;
  --color-dark: #0C1B16;
  --radius-card: 1rem;
  --shadow-card: 0 1px 3px rgba(16,40,32,0.06);
  --shadow-lift: 0 16px 40px rgba(16,40,32,0.10);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  background-color: var(--color-bg);
  color: var(--color-ink);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

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

button,
input {
  font-family: inherit;
}

.container-main {
  width: min(100% - 2.5rem, 1200px);
  margin-inline: auto;
}

::selection {
  background: var(--color-accent);
  color: var(--color-dark);
}

#siteHeader {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  height: 84px;
  display: flex;
  align-items: center;
  transition: background 0.2s ease-out, box-shadow 0.2s ease-out, height 0.2s ease-out;
  background: transparent;
}

#siteHeader.scrolled {
  background: rgba(16, 40, 32, 0.96);
  box-shadow: 0 8px 24px rgba(12, 27, 22, 0.14);
  backdrop-filter: blur(8px);
  height: 64px;
}

.nav-link {
  position: relative;
  display: inline-block;
  font-size: 15px;
  font-weight: 500;
  color: #fff;
  padding: 10px 4px;
  margin: 0 14px;
  opacity: 0.86;
  transition: color 0.2s ease-out, opacity 0.2s ease-out;
}

.nav-link:hover {
  opacity: 1;
  color: var(--color-accent);
}

.nav-link.active {
  color: var(--color-accent);
  opacity: 1;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  left: 8px;
  right: 8px;
  bottom: -2px;
  height: 2px;
  background: var(--color-accent);
  border-radius: 2px;
}

.search-input {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 10px;
  height: 40px;
  padding-left: 2.5rem;
  color: #fff;
  font-size: 14px;
  transition: background 0.2s ease-out, border-color 0.2s ease-out, box-shadow 0.2s ease-out;
  width: 260px;
}

.search-input::placeholder {
  color: rgba(255, 255, 255, 0.6);
}

.search-input:focus {
  outline: none;
  background: rgba(255, 255, 255, 0.14);
  border-color: var(--color-accent);
  box-shadow: 0 0 0 4px rgba(200, 240, 79, 0.2);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border-radius: 9999px;
  font-weight: 600;
  height: 3rem;
  padding: 0 1.75rem;
  transition: all 0.2s ease-out;
  outline: none;
  white-space: nowrap;
}

.btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.btn-accent {
  background: var(--color-accent);
  color: var(--color-dark);
}

.btn-accent:hover {
  filter: brightness(1.05);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(200, 240, 79, 0.25);
}

.btn-ghost {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.55);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #fff;
  transform: translateY(-2px);
}

.btn-ghost-dark {
  background: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
}

.btn-ghost-dark:hover {
  background: rgba(16, 40, 32, 0.05);
  transform: translateY(-2px);
}

.card-hover {
  transition: transform 0.2s ease-out, box-shadow 0.2s ease-out;
}

.card-hover:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lift);
}

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

.media-img {
  transition: transform 0.4s ease-out;
}

.tag {
  display: inline-flex;
  align-items: center;
  font-size: 12px;
  letter-spacing: 0.06em;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 9999px;
  background: rgba(16, 40, 32, 0.05);
  color: var(--color-primary);
}

.listing-row {
  transition: background 0.2s ease-out, padding-left 0.2s ease-out;
  border-bottom: 1px solid var(--color-line);
}

.listing-row:hover {
  background: #fff;
  padding-left: 12px;
}

.listing-row:hover .listing-title {
  color: var(--color-primary);
}

.listing-title {
  transition: color 0.2s ease-out;
}

.faq-item {
  border: 1px solid var(--color-line);
  border-radius: 1rem;
  background: #fff;
  overflow: hidden;
  transition: box-shadow 0.2s ease-out;
}

.faq-item.active {
  box-shadow: var(--shadow-lift);
}

.faq-toggle {
  cursor: pointer;
  transition: background 0.2s ease-out;
}

.faq-toggle:hover {
  background: rgba(16, 40, 32, 0.02);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.3s ease-out, opacity 0.25s ease-out, padding 0.2s ease-out;
  padding: 0 1.5rem;
  color: var(--color-sub);
}

.faq-item.active .faq-answer {
  max-height: 300px;
  opacity: 1;
  padding-bottom: 1.25rem;
}

.icon-plus {
  display: inline-block;
  transition: transform 0.25s ease-out;
}

.faq-item.active .icon-plus {
  transform: rotate(45deg);
}

.mobile-menu {
  position: fixed;
  top: 84px;
  right: 0;
  width: min(82%, 340px);
  height: calc(100dvh - 84px);
  background: var(--color-dark);
  color: #fff;
  transform: translateX(100%);
  transition: transform 0.25s ease-out;
  z-index: 40;
}

.mobile-menu.open {
  transform: translateX(0);
}

.mobile-nav-link {
  display: block;
  padding: 12px 20px;
  color: rgba(255, 255, 255, 0.88);
  font-weight: 500;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: background 0.2s ease-out, color 0.2s ease-out;
}

.mobile-nav-link:hover {
  color: var(--color-accent);
  background: rgba(255, 255, 255, 0.04);
}

.mobile-nav-link.active {
  color: var(--color-accent);
}

.hero-title {
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.eyebrow-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  letter-spacing: 0.08em;
  font-weight: 500;
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.14);
  padding: 6px 14px;
  border-radius: 9999px;
  backdrop-filter: blur(6px);
}

.timeline-row {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px;
  align-items: start;
}

.number-marker {
  font-family: "Roboto Mono", ui-monospace, monospace;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-accent);
  padding-top: 6px;
}

.section-divider {
  border: 0;
  border-top: 1px solid var(--color-line);
  margin: 0;
}

@media (max-width: 768px) {
  .container-main {
    width: min(100% - 1.5rem, 1200px);
  }

  #siteHeader {
    height: 64px;
  }

  .search-input {
    width: 100%;
  }
}

/* roulang page: article */
:root {
  --color-primary: #102820;
  --color-accent: #C8F04F;
  --color-bg: #F7F6F2;
  --color-ink: #1C1C1A;
  --color-dark: #0C1B16;
  --color-line: #E5E4DE;
  --radius-card: 1rem;
  --shadow-card: 0 1px 3px rgba(16,40,32,0.06);
  --shadow-hover: 0 16px 40px rgba(16,40,32,0.10);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
  background: var(--color-bg);
  color: var(--color-ink);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
button { font-family: inherit; cursor: pointer; }
input { font-family: inherit; outline: none; }

.container-main {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
@media (min-width: 768px) {
  .container-main { padding-left: 32px; padding-right: 32px; }
}

#siteHeader {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 84px;
  background: rgba(12, 27, 22, 0.92);
  backdrop-filter: blur(12px);
  transition: all 0.2s ease-out;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
#siteHeader.scrolled {
  height: 64px;
  background: rgba(16, 40, 32, 0.96);
  box-shadow: 0 8px 30px rgba(0,0,0,0.25);
}
.nav-link {
  position: relative;
  padding: 8px 2px;
  margin: 0 14px;
  font-size: 15px;
  font-weight: 500;
  color: rgba(255,255,255,0.82);
  transition: color 0.2s ease-out;
  white-space: nowrap;
}
.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s ease-out;
}
.nav-link:hover { color: #ffffff; }
.nav-link:hover::after { transform: scaleX(1); }
.nav-link.active { color: #ffffff; font-weight: 600; }
.nav-link.active::after { transform: scaleX(1); }

.search-input {
  width: 260px;
  height: 42px;
  border-radius: 12px;
  background: rgba(255,255,255,0.10);
  border: 1px solid rgba(255,255,255,0.14);
  color: #ffffff;
  font-size: 14px;
  padding: 0 14px 0 38px;
  transition: all 0.2s ease-out;
}
.search-input::placeholder { color: rgba(255,255,255,0.55); }
.search-input:focus {
  background: rgba(255,255,255,0.14);
  border-color: var(--color-accent);
  box-shadow: 0 0 0 4px rgba(200,240,79,0.18);
  outline: none;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  transition: all 0.2s ease-out;
  white-space: nowrap;
}
.btn:focus-visible,
.nav-link:focus-visible,
.search-input:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}
.btn-accent {
  background: var(--color-accent);
  color: var(--color-primary);
}
.btn-accent:hover {
  background: #d6f86a;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(200,240,79,0.30);
}
.btn-ghost {
  background: transparent;
  border: 1px solid rgba(255,255,255,0.30);
  color: rgba(255,255,255,0.9);
}
.btn-ghost:hover {
  border-color: #ffffff;
  background: rgba(255,255,255,0.08);
  transform: translateY(-2px);
}
.btn-outline-primary {
  background: transparent;
  border: 1px solid var(--color-primary);
  color: var(--color-primary);
}
.btn-outline-primary:hover {
  background: var(--color-primary);
  color: #ffffff;
  transform: translateY(-2px);
}

#mobileMenu {
  position: fixed;
  inset: 0;
  z-index: 99;
  background: rgba(12, 27, 22, 0.98);
  backdrop-filter: blur(16px);
  display: flex;
  flex-direction: column;
  padding: 100px 32px 40px;
  transition: opacity 0.2s ease-out;
}
#mobileMenu.hidden-menu { display: none; }
#mobileMenu a {
  color: rgba(255,255,255,0.88);
  font-size: 20px;
  font-weight: 600;
  padding: 16px 0;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.page-breadcrumb {
  padding: 96px 0 0;
  background: var(--color-dark);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: rgba(255,255,255,0.55);
  padding: 18px 0;
}
.breadcrumb-list a { color: rgba(255,255,255,0.75); transition: color 0.2s; }
.breadcrumb-list a:hover { color: var(--color-accent); }
.breadcrumb-sep { color: rgba(255,255,255,0.3); }
.breadcrumb-current { color: var(--color-accent); font-weight: 500; }

.article-shell {
  padding: 56px 0 72px;
}
.article-wrap {
  max-width: 768px;
  margin: 0 auto;
}
.article-title {
  font-size: 32px;
  line-height: 1.3;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--color-ink);
  margin-bottom: 20px;
}
@media (min-width: 768px) {
  .article-title { font-size: 44px; }
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--color-line);
  margin-bottom: 36px;
  font-size: 14px;
  color: #8A8A85;
}
.article-meta .meta-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.meta-tag {
  display: inline-block;
  padding: 4px 14px;
  background: rgba(200,240,79,0.15);
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 600;
  border-radius: 999px;
}

.article-content {
  font-size: 16px;
  line-height: 1.9;
  color: #3F3F3C;
}
.article-content p { margin-bottom: 22px; }
.article-content h2 {
  font-size: 26px;
  font-weight: 800;
  color: var(--color-ink);
  margin: 44px 0 18px;
  letter-spacing: -0.01em;
}
.article-content h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-ink);
  margin: 36px 0 14px;
}
.article-content ul,
.article-content ol {
  margin: 0 0 24px;
  padding-left: 24px;
}
.article-content ul { list-style: disc; }
.article-content ol { list-style: decimal; }
.article-content li { margin-bottom: 8px; }
.article-content blockquote {
  border-left: 4px solid var(--color-accent);
  background: rgba(16,40,32,0.04);
  padding: 18px 24px;
  border-radius: 0 12px 12px 0;
  margin: 28px 0;
  color: #55554F;
  font-style: italic;
}
.article-content img {
  border-radius: 16px;
  margin: 32px 0;
  box-shadow: var(--shadow-card);
}
.article-content a {
  color: var(--color-primary);
  text-decoration: underline;
  text-decoration-color: rgba(200,240,79,0.8);
  text-underline-offset: 4px;
  transition: text-decoration-color 0.2s;
}
.article-content a:hover { text-decoration-color: var(--color-primary); }
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  font-size: 15px;
}
.article-content th,
.article-content td {
  border: 1px solid var(--color-line);
  padding: 12px 16px;
  text-align: left;
}
.article-content th {
  background: rgba(16,40,32,0.04);
  font-weight: 700;
  color: var(--color-ink);
}

.not-found-box {
  max-width: 560px;
  margin: 80px auto;
  text-align: center;
  padding: 64px 32px;
  background: #ffffff;
  border-radius: 24px;
  box-shadow: var(--shadow-card);
}
.not-found-box h2 { font-size: 28px; font-weight: 900; color: var(--color-ink); margin-bottom: 14px; }
.not-found-box p { color: #8A8A85; margin-bottom: 28px; }

.section-related {
  padding: 0 0 72px;
}
.section-title-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 32px;
}
.section-title {
  font-size: 28px;
  font-weight: 900;
  color: var(--color-ink);
  letter-spacing: -0.02em;
}
.section-sub {
  font-size: 14px;
  color: #8A8A85;
}
.related-card {
  background: #ffffff;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(229,228,222,0.6);
  transition: all 0.2s ease-out;
}
.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.related-card .card-img-wrap {
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: #EDECE7;
}
.related-card .card-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease-out;
}
.related-card:hover .card-img-wrap img { transform: scale(1.03); }
.related-card .card-body { padding: 20px 20px 24px; }
.related-card .card-title {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--color-ink);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 51px;
  transition: color 0.2s;
}
.related-card:hover .card-title { color: var(--color-primary); }
.related-card .card-excerpt {
  font-size: 14px;
  color: #8A8A85;
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin: 10px 0 16px;
}
.related-card .card-date {
  font-family: 'Roboto Mono', ui-monospace, monospace;
  font-size: 12px;
  color: #B0B0AA;
}

.faq-section {
  background: #ffffff;
  border-top: 1px solid rgba(229,228,222,0.5);
}
.faq-item {
  border-bottom: 1px solid var(--color-line);
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 22px 0;
  background: none;
  border: none;
  text-align: left;
  font-size: 17px;
  font-weight: 600;
  color: var(--color-ink);
  gap: 16px;
  transition: color 0.2s;
}
.faq-question:hover { color: var(--color-primary); }
.faq-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(16,40,32,0.06);
  position: relative;
  transition: all 0.2s ease-out;
}
.faq-icon::before,
.faq-icon::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--color-primary);
  border-radius: 1px;
  transition: all 0.2s ease-out;
}
.faq-icon::before { width: 12px; height: 2px; }
.faq-icon::after { width: 2px; height: 12px; }
.faq-item.active .faq-icon { background: var(--color-accent); }
.faq-item.active .faq-icon::after { transform: translate(-50%, -50%) rotate(90deg); opacity: 0; }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease-out, opacity 0.2s ease-out;
  opacity: 0;
}
.faq-item.active .faq-answer {
  max-height: 320px;
  opacity: 1;
}
.faq-answer p {
  padding: 0 0 24px;
  color: #6B6B66;
  font-size: 15px;
  line-height: 1.8;
  max-width: 680px;
}

.cta-strip {
  background: var(--color-dark);
  padding: 64px 0;
}
.cta-strip h2 {
  color: #ffffff;
  font-size: 30px;
  font-weight: 900;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}
.cta-strip p { color: rgba(255,255,255,0.6); }

footer {
  background: #0B1915;
}

@media (max-width: 1024px) {
  .search-input { width: 180px; }
  .nav-link { margin: 0 8px; font-size: 14px; }
}
@media (max-width: 768px) {
  .article-shell { padding: 40px 0 56px; }
  .article-title { font-size: 30px; }
  .section-title { font-size: 24px; }
  .cta-strip h2 { font-size: 24px; }
}

/* roulang page: category2 */
:root {
            --color-primary: #102820;
            --color-accent: #C8F04F;
            --color-bg: #F7F6F2;
            --color-dark: #0C1B16;
            --color-ink: #1C1C1A;
            --color-sub: #3F3F3C;
            --color-mut: #8A8A85;
            --color-line: #E5E4DE;
            --radius-card: 1rem;
            --shadow-card: 0 1px 3px rgba(16, 40, 32, 0.06);
            --shadow-lift: 0 16px 40px rgba(16, 40, 32, 0.10);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
            line-height: 1.75;
            background: var(--color-bg);
            color: var(--color-ink);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        button {
            font: inherit;
            cursor: pointer;
            background: none;
            border: none;
        }
        input {
            font: inherit;
        }
        .container-main {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
            width: 100%;
        }
        .font-mono {
            font-family: 'Roboto Mono', 'ui-monospace', 'SFMono-Regular', monospace;
        }
        .text-mut {
            color: var(--color-mut);
        }
        .text-sub {
            color: var(--color-sub);
        }
        #siteHeader {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 50;
            height: 84px;
            display: flex;
            align-items: center;
            transition: all .2s ease-out;
        }
        #siteHeader.scrolled {
            background: rgba(16, 40, 32, 0.96);
            backdrop-filter: blur(12px);
            height: 64px;
            box-shadow: 0 8px 30px rgba(12, 27, 22, 0.25);
        }
        #siteHeader:not(.scrolled) {
            background: linear-gradient(180deg, rgba(12, 27, 22, 0.72) 0%, rgba(12, 27, 22, 0.2) 70%, transparent 100%);
        }
        .nav-link {
            position: relative;
            display: inline-flex;
            align-items: center;
            font-size: 0.9rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.82);
            padding: 0.375rem 0.875rem;
            border-radius: 9999px;
            transition: color .2s ease, background .2s ease;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }
        .nav-link.active {
            color: #fff;
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: -2px;
            height: 2px;
            border-radius: 2px;
            background: var(--color-accent);
        }
        .search-input {
            width: 260px;
            height: 40px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.18);
            border-radius: 9999px;
            padding-left: 2.4rem;
            padding-right: 1rem;
            font-size: 0.875rem;
            color: #fff;
            transition: all .2s ease;
            outline: none;
        }
        .search-input::placeholder {
            color: rgba(255, 255, 255, 0.6);
        }
        .search-input:focus {
            border-color: var(--color-accent);
            background: rgba(255, 255, 255, 0.16);
            box-shadow: 0 0 0 4px rgba(200, 240, 79, 0.18);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.375rem;
            border-radius: 9999px;
            font-weight: 600;
            transition: all .2s ease-out;
            letter-spacing: 0.01em;
        }
        .btn:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
        }
        .btn-accent {
            background: var(--color-accent);
            color: var(--color-primary);
        }
        .btn-accent:hover {
            background: #d9f87a;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(200, 240, 79, 0.28);
        }
        .btn-ghost {
            border: 1px solid rgba(255, 255, 255, 0.5);
            color: #fff;
        }
        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
        }
        .btn-darkghost {
            border: 1px solid rgba(16, 40, 32, 0.35);
            color: var(--color-primary);
        }
        .btn-darkghost:hover {
            background: rgba(16, 40, 32, 0.06);
            border-color: var(--color-primary);
        }
        .card-hover {
            transition: transform .2s ease-out, box-shadow .2s ease-out;
        }
        .card-hover:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lift);
        }
        .img-zoom {
            overflow: hidden;
        }
        .img-zoom img {
            transition: transform .5s ease;
        }
        .img-zoom:hover img {
            transform: scale(1.03);
        }
        .tag {
            display: inline-flex;
            align-items: center;
            gap: 0.25rem;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            padding: 0.25rem 0.75rem;
            border-radius: 9999px;
            background: rgba(16, 40, 32, 0.06);
            color: var(--color-primary);
        }
        .section-title {
            font-size: 2rem;
            font-weight: 900;
            letter-spacing: -0.02em;
            line-height: 1.2;
            color: var(--color-ink);
        }
        @media (min-width: 768px) {
            .section-title {
                font-size: 2.5rem;
            }
        }
        .page-hero {
            min-height: 240px;
            padding-top: 140px;
            padding-bottom: 48px;
            background: linear-gradient(135deg, rgba(12, 27, 22, 0.88) 0%, rgba(16, 40, 32, 0.72) 60%, rgba(16, 40, 32, 0.5) 100%), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            position: relative;
        }
        .dark-section {
            background-color: var(--color-dark);
        }
        .faq-item {
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            background: #fff;
            overflow: hidden;
            transition: box-shadow .2s ease;
        }
        .faq-item.open {
            box-shadow: var(--shadow-card);
        }
        .faq-icon {
            transition: transform .25s ease;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer-wrap {
            display: grid;
            grid-template-rows: 0fr;
            transition: grid-template-rows .3s ease;
        }
        .faq-item.open .faq-answer-wrap {
            grid-template-rows: 1fr;
        }
        .faq-answer {
            overflow: hidden;
        }
        .reveal-link {
            transition: color .2s ease, transform .2s ease;
        }
        .reveal-link:hover {
            color: var(--color-primary);
        }
        .arrow-move {
            display: inline-block;
            transition: transform .2s ease;
        }
        .group:hover .arrow-move {
            transform: translateX(4px);
        }
        @media (max-width: 1023px) {
            #mobileMenu {
                position: fixed;
                inset: 0;
                background: var(--color-dark);
                z-index: 60;
                padding: 2rem 1.5rem;
                display: flex;
                flex-direction: column;
                gap: 1rem;
                transform: translateX(100%);
                transition: transform .3s ease;
            }
            #mobileMenu.open {
                transform: translateX(0);
            }
            #mobileMenu .nav-link {
                font-size: 1.1rem;
                padding: 0.6rem 0.5rem;
                color: rgba(255, 255, 255, 0.85);
                border-bottom: 1px solid rgba(255, 255, 255, 0.08);
                border-radius: 0;
            }
            #mobileMenu .nav-link.active::after {
                display: none;
            }
            #mobileMenu .nav-link.active {
                color: var(--color-accent);
            }
        }
        @media (min-width: 1024px) {
            #mobileMenu {
                display: none !important;
            }
        }
        .timeline-node {
            position: relative;
            padding-left: 2rem;
        }
        .timeline-node::before {
            content: '';
            position: absolute;
            left: 0.5rem;
            top: 0.5rem;
            width: 2px;
            background: var(--color-line);
            bottom: -0.5rem;
        }
        .timeline-node:last-child::before {
            display: none;
        }
        .timeline-dot {
            position: absolute;
            left: 0;
            top: 0.5rem;
            width: 0.75rem;
            height: 0.75rem;
            border-radius: 9999px;
            background: var(--color-accent);
            border: 2px solid var(--color-primary);
        }

/* roulang page: category1 */
:root {
      --color-primary: #102820;
      --color-accent: #C8F04F;
      --color-bg: #F7F6F2;
      --color-dark: #0C1B16;
      --color-ink: #1C1C1A;
      --color-muted: #3F3F3C;
      --color-soft: #8A8A85;
      --color-line: #E5E4DE;
      --radius-card: 1rem;
      --shadow-card: 0 1px 3px rgba(16,40,32,0.06);
      --shadow-hover: 0 16px 40px rgba(16,40,32,0.10);
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
      background: var(--color-bg);
      color: var(--color-ink);
      line-height: 1.75;
      margin: 0;
      padding: 0;
      -webkit-font-smoothing: antialiased;
    }

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

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

    button,
    input {
      font-family: inherit;
    }

    .container-main {
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }

    @media (max-width: 640px) {
      .container-main {
        padding-left: 1.25rem;
        padding-right: 1.25rem;
      }
    }

    /* ===== Header ===== */
    #siteHeader {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 50;
      height: 84px;
      background: transparent;
      transition: all .3s ease-out;
      display: flex;
      align-items: center;
    }

    #siteHeader.scrolled {
      height: 64px;
      background: rgba(12, 27, 22, 0.96);
      backdrop-filter: blur(12px);
      box-shadow: 0 8px 30px rgba(0, 0, 0, 0.22);
    }

    #siteHeader .nav-link {
      display: inline-flex;
      align-items: center;
      font-size: .9rem;
      font-weight: 500;
      color: rgba(255, 255, 255, 0.82);
      padding: .4rem .95rem;
      border-radius: 999px;
      transition: all .2s ease-out;
      white-space: nowrap;
    }

    #siteHeader .nav-link:hover {
      color: #fff;
      background: rgba(255, 255, 255, 0.1);
    }

    #siteHeader .nav-link.active {
      color: var(--color-primary);
      background: var(--color-accent);
      font-weight: 700;
    }

    .search-input {
      width: 260px;
      height: 42px;
      padding: 0 1rem 0 2.5rem;
      background: rgba(255, 255, 255, 0.1);
      border: 1px solid rgba(255, 255, 255, 0.2);
      border-radius: 999px;
      color: #fff;
      font-size: .875rem;
      transition: all .2s ease-out;
    }

    .search-input::placeholder {
      color: rgba(255, 255, 255, 0.55);
    }

    .search-input:focus {
      outline: none;
      background: rgba(255, 255, 255, 0.16);
      border-color: var(--color-accent);
      box-shadow: 0 0 0 4px rgba(200, 240, 79, 0.2);
    }

    /* ===== Buttons ===== */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 600;
      border-radius: 999px;
      transition: all .2s ease-out;
      cursor: pointer;
      gap: .4rem;
      border: none;
    }

    .btn:focus-visible {
      outline: 2px solid var(--color-accent);
      outline-offset: 2px;
    }

    .btn-accent {
      background: var(--color-accent);
      color: #102820;
    }

    .btn-accent:hover {
      background: #d8f56b;
      transform: translateY(-2px);
      box-shadow: 0 10px 25px rgba(200, 240, 79, 0.25);
    }

    .btn-ghost {
      border: 1px solid rgba(255, 255, 255, 0.45);
      color: #fff;
      background: transparent;
    }

    .btn-ghost:hover {
      background: rgba(255, 255, 255, 0.12);
      border-color: #fff;
    }

    /* ===== Page Banner ===== */
    .page-banner {
      min-height: 320px;
      background-size: cover;
      background-position: center;
      display: flex;
      align-items: center;
      position: relative;
    }

    .page-banner::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(to top, rgba(12, 27, 22, 0.88) 0%, rgba(12, 27, 22, 0.5) 55%, rgba(16, 40, 32, 0.35) 100%);
    }

    .banner-breadcrumb a {
      color: rgba(255, 255, 255, 0.6);
      transition: color .2s;
    }

    .banner-breadcrumb a:hover {
      color: #fff;
    }

    /* ===== Section label ===== */
    .tiny-label {
      display: inline-block;
      font-size: .75rem;
      font-weight: 700;
      letter-spacing: .16em;
      text-transform: uppercase;
      color: var(--color-primary);
      border-left: 3px solid var(--color-accent);
      padding-left: .6rem;
      margin-bottom: .75rem;
    }

    .badge-tag {
      display: inline-flex;
      align-items: center;
      padding: .4rem 1rem;
      font-size: .8125rem;
      border-radius: 999px;
      background: #F7F6F2;
      border: 1px solid var(--color-line);
      color: var(--color-muted);
      transition: all .2s ease-out;
      line-height: 1.4;
    }

    .badge-tag:hover {
      border-color: var(--color-primary);
      background: var(--color-primary);
      color: #fff;
    }

    /* ===== Highlight List ===== */
    .highlight-list {
      border-top: 1px solid var(--color-line);
    }

    .highlight-item {
      display: flex;
      gap: 1.25rem;
      padding: 1.75rem 0;
      border-bottom: 1px solid var(--color-line);
      transition: padding-left .2s ease-out;
    }

    .highlight-item:hover {
      padding-left: .5rem;
    }

    .highlight-num {
      font-family: 'Roboto Mono', ui-monospace, monospace;
      font-size: .8rem;
      font-weight: 700;
      color: #fff;
      background: var(--color-primary);
      width: 40px;
      height: 40px;
      border-radius: 999px;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
      margin-top: .15rem;
    }

    /* ===== Scenario Card ===== */
    .scenario-card {
      background: #fff;
      border: 1px solid var(--color-line);
      border-radius: var(--radius-card);
      padding: 1.75rem;
      transition: box-shadow .2s ease-out, transform .2s ease-out;
      position: relative;
    }

    .scenario-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }

    .scenario-num {
      font-family: 'Roboto Mono', ui-monospace, monospace;
      font-size: .8rem;
      color: var(--color-soft);
      letter-spacing: .1em;
    }

    /* ===== Flow Step ===== */
    .flow-step {
      padding: 2rem 1.5rem;
      border-radius: var(--radius-card);
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.1);
      transition: all .2s ease-out;
      position: relative;
      backdrop-filter: blur(4px);
    }

    .flow-step:hover {
      background: rgba(255, 255, 255, 0.1);
      transform: translateY(-6px);
      border-color: rgba(200, 240, 79, 0.35);
    }

    .flow-num {
      font-family: 'Roboto Mono', ui-monospace, monospace;
      font-size: .9rem;
      font-weight: 700;
      color: var(--color-accent);
    }

    .flow-line {
      position: absolute;
      top: 58px;
      left: 10%;
      right: 10%;
      height: 1px;
      background: rgba(255, 255, 255, 0.12);
    }

    /* ===== FAQ ===== */
    .faq-item {
      background: #fff;
      border: 1px solid var(--color-line);
      border-radius: var(--radius-card);
      overflow: hidden;
      transition: box-shadow .2s ease-out;
    }

    .faq-item.active {
      box-shadow: var(--shadow-card);
      border-color: rgba(16, 40, 32, 0.18);
    }

    .faq-question {
      padding: 1.25rem 1.5rem;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 1rem;
      font-weight: 600;
      font-size: 1.02rem;
      color: var(--color-ink);
      border: none;
      background: transparent;
      width: 100%;
      text-align: left;
      transition: color .2s;
    }

    .faq-question:hover {
      color: var(--color-primary);
    }

    .faq-icon {
      width: 32px;
      height: 32px;
      border-radius: 999px;
      background: #Efeee9;
      display: flex;
      align-items: center;
      justify-content: center;
      font-family: 'Roboto Mono', ui-monospace, monospace;
      font-size: 1.1rem;
      font-weight: 400;
      color: var(--color-ink);
      transition: transform .3s ease-out, background .3s ease-out;
      flex-shrink: 0;
      line-height: 1;
    }

    .faq-item.active .faq-icon {
      transform: rotate(45deg);
      background: var(--color-accent);
    }

    .faq-answer {
      max-height: 0;
      opacity: 0;
      overflow: hidden;
      transition: max-height .35s ease, opacity .3s ease, padding .3s ease;
      padding: 0 1.5rem;
      color: var(--color-muted);
      font-size: .9375rem;
      line-height: 1.8;
    }

    .faq-item.active .faq-answer {
      max-height: 420px;
      opacity: 1;
      padding: 0 1.5rem 1.5rem 1.5rem;
    }

    /* ===== CTA ===== */
    .cta-section {
      background: var(--color-accent);
      color: #102820;
    }

    .btn-on-accent {
      background: var(--color-primary);
      color: #fff;
    }

    .btn-on-accent:hover {
      background: #1a3f34;
      transform: translateY(-2px);
      box-shadow: 0 12px 30px rgba(16, 40, 32, 0.25);
    }

    .btn-ghost-dark {
      border: 2px solid var(--color-primary);
      color: var(--color-primary);
      background: transparent;
    }

    .btn-ghost-dark:hover {
      background: var(--color-primary);
      color: #fff;
    }

    /* ===== Mobile Menu ===== */
    #mobileMenu {
      position: fixed;
      top: 0;
      right: 0;
      width: 100%;
      max-width: 420px;
      height: 100vh;
      background: var(--color-dark);
      z-index: 60;
      transform: translateX(100%);
      transition: transform .35s ease-out;
      padding: 2rem 1.5rem;
      overflow-y: auto;
    }

    #mobileMenu.open {
      transform: translateX(0);
    }

    /* ===== Footer ===== */
    .bg-dark {
      background: var(--color-dark);
    }

    .shadow-card {
      box-shadow: var(--shadow-card);
    }

    /* ===== Scrollbar ===== */
    ::selection {
      background: rgba(200, 240, 79, 0.3);
    }

    @media (max-width: 768px) {
      .page-banner {
        min-height: 260px;
      }
    }

    @media (max-width: 520px) {
      .page-banner {
        min-height: 220px;
      }
    }

/* roulang page: category3 */
:root {
            --color-primary: #102820;
            --color-accent: #C8F04F;
            --color-bg: #F7F6F2;
            --color-dark: #0C1B16;
            --color-ink: #1C1C1A;
            --color-ink-2: #3F3F3C;
            --color-ink-3: #8A8A85;
            --color-line: #E5E4DE;
            --radius-card: 1rem;
            --radius-card-sm: 0.75rem;
            --shadow-card: 0 1px 3px rgba(16, 40, 32, 0.06);
            --shadow-card-hover: 0 16px 40px rgba(16, 40, 32, 0.10);
        }

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

        * {
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
            background-color: var(--color-bg);
            color: var(--color-ink);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        input {
            font: inherit;
        }

        .container-main {
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .bg-primary {
            background-color: var(--color-primary);
        }

        .bg-accent {
            background-color: var(--color-accent);
        }

        .bg-dark {
            background-color: var(--color-dark);
        }

        .bg-bg {
            background-color: var(--color-bg);
        }

        .text-accent {
            color: var(--color-accent);
        }

        .text-ink-2 {
            color: var(--color-ink-2);
        }

        .text-ink-3 {
            color: var(--color-ink-3);
        }

        .border-line {
            border-color: var(--color-line);
        }

        .shadow-card {
            box-shadow: var(--shadow-card);
        }

        .shadow-card-hover:hover {
            box-shadow: var(--shadow-card-hover);
        }

        #siteHeader {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(16, 40, 32, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            height: 84px;
            display: flex;
            align-items: center;
            transition: background 0.2s ease-out, height 0.2s ease-out, box-shadow 0.2s ease-out;
        }

        #siteHeader.scrolled {
            height: 64px;
            background: var(--color-primary);
            box-shadow: 0 4px 24px rgba(12, 27, 22, 0.18);
        }

        .nav-link {
            position: relative;
            color: rgba(255, 255, 255, 0.72);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 999px;
            transition: color 0.2s ease-out, background 0.2s ease-out;
        }

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

        .nav-link.active {
            color: var(--color-accent);
            font-weight: 700;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 2px;
            height: 2px;
            border-radius: 2px;
            background: var(--color-accent);
        }

        .search-input {
            width: 260px;
            height: 42px;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, 0.22);
            background: rgba(255, 255, 255, 0.10);
            padding-left: 40px;
            padding-right: 16px;
            font-size: 14px;
            color: #fff;
            outline: none;
            transition: border-color 0.2s ease-out, box-shadow 0.2s ease-out, background 0.2s ease-out;
        }

        .search-input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }

        .search-input:focus {
            border-color: var(--color-accent);
            background: rgba(255, 255, 255, 0.16);
            box-shadow: 0 0 0 4px rgba(200, 240, 79, 0.20);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: 999px;
            font-weight: 600;
            transition: all 0.2s ease-out;
            white-space: nowrap;
        }

        .btn:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }

        .btn-ghost {
            border: 1px solid rgba(255, 255, 255, 0.4);
            color: #fff;
            background: transparent;
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.7);
            transform: translateY(-2px);
        }

        .btn-accent {
            background: var(--color-accent);
            color: #102820;
            font-weight: 700;
        }

        .btn-accent:hover {
            background: #d6f76a;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(200, 240, 79, 0.30);
        }

        .btn-outline-dark {
            border: 1.5px solid var(--color-primary);
            color: var(--color-primary);
            background: transparent;
        }

        .btn-outline-dark:hover {
            background: var(--color-primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(16, 40, 32, 0.15);
        }

        .btn-outline-light {
            border: 1.5px solid rgba(255, 255, 255, 0.5);
            color: #fff;
            background: transparent;
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            transform: translateY(-2px);
        }

        .section-padding {
            padding-top: 80px;
            padding-bottom: 80px;
        }

        @media (max-width: 768px) {
            .section-padding {
                padding-top: 56px;
                padding-bottom: 56px;
            }
        }

        .section-title {
            font-size: clamp(1.75rem, 4vw, 2.5rem);
            font-weight: 900;
            letter-spacing: -0.02em;
            line-height: 1.2;
            color: var(--color-ink);
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--color-ink-3);
            line-height: 1.7;
        }

        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 999px;
            background: rgba(16, 40, 32, 0.06);
            color: var(--color-primary);
            letter-spacing: 0.02em;
        }

        .tag-accent {
            background: rgba(200, 240, 79, 0.18);
            color: #334A16;
        }

        .card-hover {
            transition: transform 0.2s ease-out, box-shadow 0.2s ease-out;
        }

        .card-hover:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-card-hover);
        }

        .cover-img {
            overflow: hidden;
            position: relative;
        }

        .cover-img img {
            transition: transform 0.45s ease-out;
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .card-hover:hover .cover-img img {
            transform: scale(1.05);
        }

        .faq-item {
            background: #fff;
            border-radius: var(--radius-card);
            border: 1px solid var(--color-line);
            margin-bottom: 12px;
            overflow: hidden;
            transition: box-shadow 0.2s ease-out;
        }

        .faq-item[open] {
            box-shadow: 0 8px 24px rgba(16, 40, 32, 0.06);
        }

        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            cursor: pointer;
            font-weight: 700;
            font-size: 17px;
            color: var(--color-ink);
            list-style: none;
            transition: color 0.2s ease-out;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary:hover {
            color: var(--color-primary);
        }

        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 999px;
            background: var(--color-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.25s ease-out;
            color: var(--color-primary);
        }

        .faq-icon svg {
            width: 14px;
            height: 14px;
            transition: transform 0.25s ease-out;
        }

        .faq-item[open] .faq-icon {
            background: var(--color-accent);
            transform: rotate(45deg);
        }

        .faq-answer {
            padding: 0 24px 22px 24px;
            color: var(--color-ink-2);
            font-size: 15px;
            line-height: 1.8;
            border-left: 3px solid var(--color-accent);
            margin-left: 24px;
            padding-left: 20px;
        }

        .cate-header-bg {
            background-image: linear-gradient(rgba(12, 27, 22, 0.78), rgba(12, 27, 22, 0.82)), url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }

        .cate-page-hero {
            padding-top: 160px;
            padding-bottom: 72px;
            min-height: 300px;
            display: flex;
            align-items: flex-end;
        }

        @media (max-width: 768px) {
            .cate-page-hero {
                padding-top: 120px;
                padding-bottom: 48px;
                min-height: 240px;
            }
        }

        .timeline-wrap {
            position: relative;
        }

        .timeline-wrap::before {
            content: '';
            position: absolute;
            left: 22px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--color-line);
        }

        @media (min-width: 768px) {
            .timeline-wrap::before {
                left: 28px;
            }
        }

        .timeline-item {
            position: relative;
            padding-left: 56px;
            padding-bottom: 28px;
        }

        .timeline-item:last-child {
            padding-bottom: 0;
        }

        .timeline-dot {
            position: absolute;
            left: 14px;
            top: 4px;
            width: 18px;
            height: 18px;
            border-radius: 999px;
            background: var(--color-accent);
            border: 4px solid #fff;
            box-shadow: 0 0 0 1px var(--color-line);
        }

        @media (min-width: 768px) {
            .timeline-item {
                padding-left: 64px;
            }
            .timeline-dot {
                left: 20px;
                width: 20px;
                height: 20px;
            }
        }

        .stat-num {
            font-family: 'Roboto Mono', ui-monospace, monospace;
            font-weight: 700;
            letter-spacing: -0.02em;
            line-height: 1;
        }

        @media (max-width: 1024px) {
            .search-input {
                width: 180px;
            }
        }

        @media (max-width: 768px) {
            #mobileNav {
                position: fixed;
                top: 0;
                right: -100%;
                width: 100%;
                height: 100vh;
                background: var(--color-primary);
                z-index: 200;
                transition: right 0.35s ease-out;
                padding: 100px 32px 40px;
                display: flex;
                flex-direction: column;
            }
            #mobileNav.open {
                right: 0;
            }
            #mobileNav .nav-link {
                font-size: 20px;
                padding: 14px 0;
                border-bottom: 1px solid rgba(255, 255, 255, 0.08);
                border-radius: 0;
            }
        }

        @media (min-width: 769px) {
            #mobileNav {
                display: none;
            }
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(24px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .fade-up {
            animation: fadeInUp 0.6s ease-out both;
        }

        .delay-1 {
            animation-delay: 0.1s;
        }
        .delay-2 {
            animation-delay: 0.2s;
        }
        .delay-3 {
            animation-delay: 0.3s;
        }