/* roulang page: index */
:root {
            --color-deep-pine: #1D3B33;
            --color-brass-gold: #C9A96E;
            --color-parchment: #FAF8F5;
            --color-dark-ink: #121E1A;
            --color-ink: #23241F;
            --color-slate-mist: #6B7C75;
            --color-footer: #141B18;
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-input: 8px;
            --shadow-card: 0 1px 2px rgba(18,30,26,0.04);
            --shadow-hover: 0 12px 30px -12px rgba(18,30,26,0.2);
            --transition: 0.25s ease;
        }
        *, *::before, *::after { box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            background-color: var(--color-parchment);
            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, input, textarea { font-family: inherit; }

        .container-main {
            max-width: 80rem;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }
        @media (min-width: 768px) {
            .container-main { padding-left: 2rem; padding-right: 2rem; }
        }

        .btn-primary {
            display: inline-flex; align-items: center; justify-content: center;
            background: var(--color-brass-gold); color: #fff;
            padding: 0.75rem 1.75rem; border-radius: var(--radius-btn);
            font-weight: 600; font-size: 0.95rem; letter-spacing: 0.02em;
            transition: all 0.25s ease; border: none; cursor: pointer;
            box-shadow: 0 2px 8px rgba(201,169,110,0.3);
        }
        .btn-primary:hover {
            background: #B89558;
            transform: scale(0.98);
            box-shadow: inset 0 2px 6px rgba(0,0,0,0.15);
        }
        .btn-primary.btn-dark { background: var(--color-deep-pine); box-shadow: 0 2px 8px rgba(29,59,51,0.2); }
        .btn-primary.btn-dark:hover { background: #163029; }

        .btn-secondary {
            display: inline-flex; align-items: center; justify-content: center;
            background: transparent; color: #fff;
            padding: 0.75rem 1.75rem; border-radius: var(--radius-btn);
            font-weight: 500; font-size: 0.95rem;
            transition: all 0.25s ease;
            border: 1px solid rgba(255,255,255,0.35); cursor: pointer;
        }
        .btn-secondary:hover {
            border-color: var(--color-brass-gold); color: var(--color-brass-gold);
            background: rgba(201,169,110,0.06);
        }
        .btn-secondary.btn-light { border-color: rgba(29,59,51,0.25); color: var(--color-deep-pine); }
        .btn-secondary.btn-light:hover { border-color: var(--color-brass-gold); color: #B89558; background: rgba(201,169,110,0.06); }

        .badge {
            display: inline-flex; align-items: center;
            background: rgba(201,169,110,0.12);
            color: #B89558;
            font-size: 0.72rem; font-weight: 600;
            padding: 0.2rem 0.8rem; border-radius: 999px;
            letter-spacing: 0.03em;
        }
        .badge.badge-dark { background: rgba(201,169,110,0.15); color: var(--color-brass-gold); }

        .img-fallback-wrap { position: relative; background: #EDEAE6; overflow: hidden; }
        .img-fallback-wrap .img-fallback-text {
            position: absolute; inset: 0;
            display: flex; align-items: center; justify-content: center;
            font-size: 0.8rem; color: #B0AAA2;
            letter-spacing: 0.05em;
        }
        .img-fallback-wrap img { position: relative; z-index: 1; transition: opacity 0.2s ease; }

        .card {
            background: #fff; border-radius: var(--radius-card);
            border: 1px solid rgba(29,59,51,0.08);
            transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
        }
        .card:hover {
            transform: translateY(-4px);
            border-color: rgba(201,169,110,0.4);
            box-shadow: 0 12px 30px -12px rgba(18,30,26,0.2);
        }

        .solution-card {
            position: relative; overflow: hidden;
            background: #fff; border-radius: var(--radius-card);
            border: 1px solid rgba(29,59,51,0.08);
            padding: 2rem;
            transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
        }
        .solution-card::before {
            content: '';
            position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
            background: var(--color-brass-gold);
            transform: scaleY(0); transform-origin: center;
            transition: transform 0.25s ease;
        }
        .solution-card:hover {
            transform: translateY(-4px);
            border-color: rgba(201,169,110,0.4);
            box-shadow: 0 12px 30px -12px rgba(18,30,26,0.2);
        }
        .solution-card:hover::before { transform: scaleY(1); }

        .pain-card {
            position: relative; overflow: hidden;
            background: #fff; border-radius: var(--radius-card);
            padding: 2rem;
            border: 1px solid rgba(29,59,51,0.08);
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }
        .pain-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 30px -12px rgba(18,30,26,0.1);
        }
        .pain-card .watermark {
            position: absolute; top: 0.5rem; right: 1.2rem;
            font-size: 4.5rem; font-weight: 800; color: rgba(201,169,110,0.10);
            line-height: 1; pointer-events: none;
            font-family: Georgia, serif;
        }

        .site-nav {
            position: sticky; top: 0; z-index: 50;
            background: rgba(250,248,245,0.85);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(29,59,51,0.08);
        }
        .nav-link {
            position: relative;
            color: var(--color-slate-mist);
            font-weight: 500; font-size: 0.95rem;
            padding: 0.4rem 0;
            transition: color 0.25s ease;
            white-space: nowrap;
        }
        .nav-link::after {
            content: '';
            position: absolute; left: 0; bottom: -2px;
            width: 100%; height: 2px;
            background: var(--color-brass-gold);
            transform: scaleX(0); transform-origin: left;
            transition: transform 0.25s ease;
        }
        .nav-link:hover { color: var(--color-deep-pine); }
        .nav-link:hover::after { transform: scaleX(1); }
        .nav-link.active { color: var(--color-deep-pine); font-weight: 600; }
        .nav-link.active::after { transform: scaleX(1); }

        .hero-decor .float-line {
            animation: floatLine 12s ease-in-out infinite;
        }
        @keyframes floatLine {
            0%, 100% { transform: translate(0, 0); }
            50% { transform: translate(8px, -8px); }
        }

        .stat-num {
            font-weight: 800;
            color: var(--color-brass-gold);
            font-size: 2.5rem;
            line-height: 1.2;
        }
        @media (min-width: 768px) { .stat-num { font-size: 3rem; } }

        .faq-item { border-bottom: 1px solid rgba(29,59,51,0.08); }
        .faq-item:last-child { border-bottom: none; }
        .faq-answer {
            max-height: 0; overflow: hidden;
            transition: max-height 0.35s ease;
        }

        .cta-frame { position: relative; }
        .cta-frame::before,
        .cta-frame::after {
            content: '';
            position: absolute; width: 56px; height: 56px;
            border-color: rgba(201,169,110,0.4);
            border-style: solid;
            pointer-events: none;
            transition: width 0.3s ease, height 0.3s ease;
        }
        .cta-frame::before {
            top: 16px; left: 16px;
            border-top-width: 2px; border-left-width: 2px;
        }
        .cta-frame::after {
            bottom: 16px; right: 16px;
            border-bottom-width: 2px; border-right-width: 2px;
        }
        @media (max-width: 768px) {
            .cta-frame::before,
            .cta-frame::after { width: 32px; height: 32px; }
        }

        .mobile-menu {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
            background: rgba(250,248,245,0.98);
        }
        .mobile-menu.open { max-height: 480px; }

        .search-expand {
            width: 0;
            opacity: 0;
            transition: width 0.25s ease, opacity 0.25s ease;
            overflow: hidden;
            padding: 0;
            border: none;
        }
        .search-expand.open {
            width: 180px;
            opacity: 1;
            padding: 0.4rem 0.75rem;
            border: 1px solid rgba(29,59,51,0.15);
            border-radius: 8px;
        }

        .modal-overlay {
            position: fixed; inset: 0; z-index: 100;
            background: rgba(18,30,26,0.6);
            backdrop-filter: blur(4px);
            display: none; align-items: center; justify-content: center;
            padding: 1rem;
        }
        .modal-overlay.active { display: flex; }
        .modal-panel {
            background: #fff; border-radius: 24px;
            max-width: 520px; width: 100%;
            position: relative;
            box-shadow: 0 20px 60px -20px rgba(0,0,0,0.4);
            transform: translateY(20px);
            opacity: 0;
            transition: transform 0.3s ease, opacity 0.3s ease;
        }
        .modal-overlay.active .modal-panel {
            transform: translateY(0);
            opacity: 1;
        }
        .modal-panel::before {
            content: '';
            position: absolute; top: 0; left: 0; right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--color-brass-gold), #E0C08A, var(--color-brass-gold));
            border-radius: 24px 24px 0 0;
        }
        @media (max-width: 640px) {
            .modal-overlay { align-items: flex-end; padding: 0; }
            .modal-panel {
                border-radius: 24px 24px 0 0;
                transform: translateY(100%);
            }
            .modal-overlay.active .modal-panel { transform: translateY(0); }
        }

        .form-input {
            width: 100%;
            padding: 0.7rem 1rem;
            border: 1px solid rgba(29,59,51,0.18);
            border-radius: 8px;
            background: #FAF8F5;
            font-size: 0.95rem;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
            outline: none;
        }
        .form-input:focus {
            border-color: var(--color-brass-gold);
            box-shadow: 0 0 0 3px rgba(201,169,110,0.15);
            background: #fff;
        }

        .section-title-line {
            width: 40px; height: 2px;
            background: var(--color-brass-gold);
            border-radius: 2px;
            margin-top: 1rem;
        }

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

        .hero-bg-pattern {
            background-image:
                linear-gradient(rgba(201,169,110,0.04) 1px, transparent 1px),
                linear-gradient(90deg, rgba(201,169,110,0.04) 1px, transparent 1px);
            background-size: 48px 48px;
        }

/* roulang page: article */
:root {
  --color-deep-pine: #1D3B33;
  --color-brass-gold: #C9A96E;
  --color-brass-gold-dark: #B89558;
  --color-parchment: #FAF8F5;
  --color-dark-ink: #121E1A;
  --color-ink: #23241F;
  --color-slate-mist: #6B7C75;
  --color-footer-dark: #141B18;
  --radius-card: 16px;
  --radius-btn: 10px;
  --radius-input: 8px;
  --shadow-card: 0 1px 3px rgba(18,30,26,0.04);
  --shadow-card-hover: 0 12px 30px -12px rgba(18,30,26,0.2);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background-color: var(--color-parchment);
  color: var(--color-ink);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { cursor: pointer; font-family: inherit; }
.container-main {
  max-width: 1280px;
  margin: 0 auto;
  padding-left: 1rem;
  padding-right: 1rem;
}
@media (min-width: 768px) {
  .container-main { padding-left: 2rem; padding-right: 2rem; }
}
/* 导航链接 */
.nav-link {
  position: relative;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-slate-mist);
  transition: color 0.25s ease;
  padding: 0.375rem 0;
  white-space: nowrap;
}
.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background: var(--color-brass-gold);
  border-radius: 2px;
  transition: width 0.3s ease;
}
.nav-link:hover,
.nav-link.active {
  color: var(--color-deep-pine);
}
.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}
/* 文章正文排版 */
.article-content {
  font-size: 1.0625rem;
  line-height: 1.85;
  color: var(--color-ink);
}
.article-content h2 {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-deep-pine);
  margin: 2.5rem 0 1rem;
  letter-spacing: -0.02em;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(29,59,51,0.08);
}
.article-content h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-deep-pine);
  margin: 2rem 0 0.75rem;
}
.article-content h4 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-deep-pine);
  margin: 1.5rem 0 0.5rem;
}
.article-content p {
  margin-bottom: 1.5rem;
}
.article-content a {
  color: var(--color-brass-gold-dark);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.article-content blockquote {
  border-left: 4px solid var(--color-brass-gold);
  padding: 0.75rem 1.25rem;
  background: rgba(201,169,110,0.08);
  border-radius: 0 12px 12px 0;
  color: var(--color-slate-mist);
  margin: 1.75rem 0;
}
.article-content img {
  border-radius: 12px;
  margin: 2rem 0;
  width: auto;
  height: auto;
}
.article-content ul,
.article-content ol {
  margin: 1.25rem 0;
  padding-left: 1.75rem;
}
.article-content ul { list-style: disc; }
.article-content ol { list-style: decimal; }
.article-content ul li,
.article-content ol li {
  margin-bottom: 0.5rem;
}
.article-content ul li::marker,
.article-content ol li::marker {
  color: var(--color-brass-gold);
  font-weight: 700;
}
.article-content code {
  background: rgba(29,59,51,0.06);
  padding: 0.2em 0.4em;
  border-radius: 4px;
  font-size: 0.9em;
  font-family: 'SFMono-Regular', Consolas, monospace;
}
.article-content pre {
  background: var(--color-dark-ink);
  color: #E5E7EB;
  padding: 1.25rem;
  border-radius: 12px;
  overflow-x: auto;
  margin: 1.75rem 0;
}
.article-content pre code {
  background: transparent;
  color: inherit;
  padding: 0;
}
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.75rem 0;
  font-size: 0.9375rem;
}
.article-content table th,
.article-content table td {
  border: 1px solid rgba(29,59,51,0.1);
  padding: 0.625rem 1rem;
  text-align: left;
}
.article-content table th {
  background: rgba(29,59,51,0.05);
  color: var(--color-deep-pine);
  font-weight: 700;
}
/* 行数截断 */
.line-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
/* 滚动条 */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--color-parchment);
}
::-webkit-scrollbar-thumb {
  background: rgba(29,59,51,0.2);
  border-radius: 8px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(201,169,110,0.5);
}
/* 移动端菜单过渡 */
#mobileMenu {
  transition: all 0.3s ease;
}
/* 图片加载失败占位 */
.img-error {
  background: #E5E7EB;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 160px;
  color: #9CA3AF;
  font-size: 0.875rem;
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
:root {
  --deep-pine: #1D3B33;
  --brass-gold: #C9A96E;
  --parchment: #FAF8F5;
  --dark-ink: #121E1A;
  --ink: #23241F;
  --slate-mist: #6B7C75;
  --footer-dark: #141B18;
  --radius-card: 16px;
  --radius-btn: 10px;
  --radius-input: 8px;
  --transition-base: 0.25s ease;
}

/* ===== 基础 reset / base ===== */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--parchment);
  color: var(--ink);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4 { letter-spacing: -0.02em; line-height: 1.25; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
button { cursor: pointer; background: none; border: none; }
input, textarea { font-family: inherit; outline: none; }

.container-main {
  max-width: 1280px;
  margin: 0 auto;
  padding-left: 1rem;
  padding-right: 1rem;
}
@media (min-width: 768px) {
  .container-main { padding-left: 2rem; padding-right: 2rem; }
}

.section-padding { padding: 4rem 0; }
@media (min-width: 768px) { .section-padding { padding: 6rem 0; } }

.section-title {
  font-size: 1.875rem;
  font-weight: 800;
  color: var(--deep-pine);
  line-height: 1.25;
}
@media (min-width: 768px) {
  .section-title { font-size: 2.25rem; }
}
.section-divider {
  width: 40px;
  height: 2px;
  background: var(--brass-gold);
  margin-top: 16px;
}
.section-desc {
  color: var(--slate-mist);
  font-size: 0.95rem;
  max-width: 640px;
}

/* ===== 导航 ===== */
.header-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(250, 248, 245, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(29, 59, 51, 0.08);
}
.nav-link {
  position: relative;
  font-size: 0.925rem;
  color: var(--slate-mist);
  transition: color 0.25s ease;
  padding: 0.25rem 0;
  white-space: nowrap;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--brass-gold);
  transition: width 0.3s ease, left 0.3s ease;
}
.nav-link:hover, .nav-link.active {
  color: var(--deep-pine);
}
.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
  left: 0;
}

.search-input-mobile {
  width: 0;
  padding: 0;
  border: 1px solid transparent;
  border-radius: var(--radius-input);
  background: transparent;
  color: var(--ink);
  transition: all 0.3s ease;
  opacity: 0;
  font-size: 0.85rem;
}
.search-input-mobile.open {
  width: 160px;
  padding: 0.4rem 0.75rem;
  border-color: rgba(201, 169, 110, 0.5);
  background: #fff;
  opacity: 1;
}

.mobile-drawer {
  display: none;
  flex-direction: column;
  gap: 0.25rem;
  padding: 1rem 1.25rem 1.5rem;
  border-top: 1px solid rgba(29, 59, 51, 0.08);
  background: rgba(250, 248, 245, 0.98);
}
.mobile-drawer.open { display: flex; }
.mobile-nav-link {
  font-size: 1rem;
  color: var(--slate-mist);
  padding: 0.6rem 0;
  transition: color 0.2s, background 0.2s;
  border-radius: 8px;
}
.mobile-nav-link:hover, .mobile-nav-link.active {
  color: var(--deep-pine);
  font-weight: 600;
  background: rgba(201, 169, 110, 0.08);
  padding-left: 0.75rem;
}

/* ===== 按钮 ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-size: 0.95rem;
  font-weight: 600;
  background: var(--brass-gold);
  color: var(--deep-pine);
  border-radius: var(--radius-btn);
  transition: all 0.25s ease;
  border: 1px solid transparent;
}
.btn-primary:hover {
  background: #B89558;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.18), 0 6px 16px rgba(201, 169, 110, 0.32);
  transform: scale(0.98);
}
.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-size: 0.95rem;
  font-weight: 600;
  border: 1px solid rgba(255, 255, 255, 0.4);
  color: #fff;
  border-radius: var(--radius-btn);
  transition: all 0.25s ease;
  background: transparent;
}
.btn-outline:hover {
  border-color: var(--brass-gold);
  color: var(--brass-gold);
  background: rgba(201, 169, 110, 0.06);
}

/* ===== 卡片 ===== */
.card {
  background: #fff;
  border-radius: var(--radius-card);
  border: 1px solid rgba(29, 59, 51, 0.1);
  transition: all 0.25s ease;
}
.card:hover {
  transform: translateY(-4px);
  border-color: rgba(201, 169, 110, 0.4);
  box-shadow: 0 12px 30px -12px rgba(18, 30, 26, 0.2);
}

.icon-box {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(201, 169, 110, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brass-gold);
  font-size: 1.25rem;
}

/* ===== Hero ===== */
.hero-bg {
  position: relative;
  background-color: var(--dark-ink);
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center 30%;
  overflow: hidden;
}
.hero-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(18, 30, 26, 0.85);
}
.hero-geo-line {
  position: absolute;
  border: 1px solid rgba(201, 169, 110, 0.08);
  border-radius: 999px;
  pointer-events: none;
}
.hero-geo-line.g1 { width: 520px; height: 520px; top: -160px; right: -120px; animation: floatLine 12s ease-in-out infinite; }
.hero-geo-line.g2 { width: 320px; height: 320px; top: 60%; right: 10%; animation: floatLine 12s ease-in-out infinite reverse; }
@keyframes floatLine {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-24px) rotate(4deg); }
}

/* ===== 场景卡片 ===== */
.scene-item {
  display: flex;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  background: #fff;
  border: 1px solid rgba(29, 59, 51, 0.08);
  border-radius: 14px;
  transition: all 0.25s ease;
}
.scene-item:hover {
  border-color: rgba(201, 169, 110, 0.45);
  box-shadow: 0 10px 24px -14px rgba(18, 30, 26, 0.18);
  transform: translateX(6px);
}

/* ===== 流程时间线 ===== */
.step-list {
  position: relative;
  border-left: 2px solid rgba(201, 169, 110, 0.35);
  margin-left: 10px;
  padding-left: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}
.step-item { position: relative; }
.step-item::before {
  content: "";
  position: absolute;
  left: -2.35rem;
  top: 0.35rem;
  width: 14px;
  height: 14px;
  border-radius: 999px;
  background: var(--brass-gold);
  border: 3px solid var(--parchment);
  box-shadow: 0 0 0 2px rgba(201, 169, 110, 0.3);
}

/* ===== 数据区 ===== */
.data-panel {
  background-color: var(--dark-ink);
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  position: relative;
}
.data-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(18, 30, 26, 0.88);
}
.data-divide + .data-divide {
  border-left: 1px solid rgba(201, 169, 110, 0.2);
}

/* ===== FAQ ===== */
.faq-item { border-bottom: 1px solid rgba(29, 59, 51, 0.1); }
.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  padding: 1.25rem 0;
  font-size: 1rem;
  font-weight: 600;
  color: var(--deep-pine);
  text-align: left;
  background: none;
  border: none;
  transition: color 0.25s;
}
.faq-question:hover { color: var(--brass-gold); }
.faq-icon { font-size: 1.25rem; color: var(--brass-gold); transition: transform 0.3s ease; flex-shrink: 0; }
.faq-item.active .faq-icon { transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  padding: 0 2rem 0 0;
  color: var(--slate-mist);
  font-size: 0.95rem;
  line-height: 1.8;
}
.faq-item.active .faq-answer {
  max-height: 320px;
  padding-bottom: 1.25rem;
}

/* ===== CTA ===== */
.cta-corner {
  position: absolute;
  width: 56px;
  height: 56px;
  border: 2px solid rgba(201, 169, 110, 0.5);
  border-radius: 4px;
  pointer-events: none;
}
.cta-corner.tl { top: 16px; left: 16px; border-right: none; border-bottom: none; }
.cta-corner.tr { top: 16px; right: 16px; border-left: none; border-bottom: none; }
.cta-corner.bl { bottom: 16px; left: 16px; border-right: none; border-top: none; }
.cta-corner.br { bottom: 16px; right: 16px; border-left: none; border-top: none; }

/* ===== 表单 Modal ===== */
#form-modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 100;
  align-items: center;
  justify-content: center;
}
#form-modal.show { display: flex; }
.form-input {
  width: 100%;
  padding: 0.65rem 0.95rem;
  border: 1px solid rgba(29, 59, 51, 0.15);
  border-radius: var(--radius-input);
  background: #fff;
  font-size: 0.9rem;
  color: var(--ink);
  transition: border-color 0.25s, box-shadow 0.25s;
}
.form-input:focus {
  border-color: var(--brass-gold);
  box-shadow: 0 0 0 3px rgba(201, 169, 110, 0.15);
}
@media (max-width: 640px) {
  #form-modal { align-items: flex-end; }
  #form-modal .modal-panel {
    align-self: flex-end;
    margin: 0;
    border-radius: 20px 20px 0 0;
    width: 100%;
    max-width: 100%;
    animation: slideUp 0.35s ease;
  }
}
@keyframes slideUp {
  from { transform: translateY(100%); }
  to { transform: translateY(0); }
}

/* ===== 图片占位 ===== */
.img-fallback {
  background: #EDEAE4;
  min-height: 180px;
  display: flex !important;
  align-items: center;
  justify-content: center;
  color: #9B9A96;
  font-size: 0.85rem;
  text-align: center;
  padding: 1rem;
}
.img-fallback::after {
  content: attr(alt);
}

/* ===== 页脚 ===== */
footer {
  background: var(--footer-dark);
  color: #fff;
}
.footer-link {
  color: rgba(255, 255, 255, 0.5);
  transition: color 0.25s;
}
.footer-link:hover { color: var(--brass-gold); }

/* ===== 通用动效 ===== */
.fade-up {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-up.show {
  opacity: 1;
  transform: translateY(0);
}

/* roulang page: category3 */
:root {
            --deep-pine: #1D3B33;
            --brass-gold: #C9A96E;
            --parchment: #FAF8F5;
            --dark-ink: #121E1A;
            --ink: #23241F;
            --slate-mist: #6B7C75;
            --footer-dark: #141B18;
            --border-light: rgba(29, 59, 51, 0.1);
            --border-gold: rgba(201, 169, 110, 0.4);
            --shadow-card: 0 12px 30px -12px rgba(18, 30, 26, 0.2);
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-input: 8px;
            --transition: 0.25s ease;
        }
        
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        
        body {
            font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            background-color: var(--parchment);
            color: var(--ink);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        
        .container-main {
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }
        
        @media (min-width: 768px) {
            .container-main {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }
        
        .nav-link {
            position: relative;
            color: var(--slate-mist);
            font-size: 0.9rem;
            font-weight: 500;
            transition: color 0.25s ease;
            text-decoration: none;
            padding-bottom: 4px;
        }
        
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--brass-gold);
            transition: width 0.25s ease;
        }
        
        .nav-link:hover {
            color: var(--deep-pine);
        }
        
        .nav-link:hover::after {
            width: 100%;
        }
        
        .nav-link.active {
            color: var(--deep-pine);
            font-weight: 700;
        }
        
        .nav-link.active::after {
            width: 100%;
        }
        
        .section-title {
            font-size: 1.875rem;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.02em;
            color: var(--deep-pine);
            margin-bottom: 1rem;
        }
        
        .section-title::after {
            content: '';
            display: block;
            width: 40px;
            height: 2px;
            background-color: var(--brass-gold);
            margin-top: 16px;
        }
        
        .card-item {
            border-radius: var(--radius-card);
            border: 1px solid var(--border-light);
            background: #fff;
            transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
            overflow: hidden;
        }
        
        .card-item:hover {
            transform: translateY(-4px);
            border-color: var(--border-gold);
            box-shadow: var(--shadow-card);
        }
        
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background-color: var(--brass-gold);
            color: var(--deep-pine);
            font-weight: 700;
            padding: 0.75rem 1.75rem;
            border-radius: var(--radius-btn);
            text-decoration: none;
            transition: background-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
            border: none;
            cursor: pointer;
            font-size: 0.95rem;
        }
        
        .btn-primary:hover {
            background-color: #B89558;
            box-shadow: inset 0 2px 4px rgba(0,0,0,0.1);
            transform: scale(0.98);
            color: #fff;
        }
        
        .btn-primary:focus-visible {
            outline: 3px solid rgba(201, 169, 110, 0.5);
            outline-offset: 2px;
        }
        
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background-color: transparent;
            color: #fff;
            border: 1px solid rgba(255,255,255,0.4);
            padding: 0.75rem 1.75rem;
            border-radius: var(--radius-btn);
            text-decoration: none;
            font-size: 0.95rem;
            font-weight: 600;
            transition: all 0.25s ease;
            cursor: pointer;
        }
        
        .btn-secondary:hover {
            background-color: rgba(255,255,255,0.1);
            border-color: var(--brass-gold);
            color: var(--brass-gold);
        }
        
        .btn-secondary:focus-visible {
            outline: 3px solid rgba(255,255,255,0.3);
            outline-offset: 2px;
        }
        
        .tag-badge {
            display: inline-block;
            background-color: rgba(201,169,110,0.15);
            color: #9A7B44;
            font-size: 0.75rem;
            font-weight: 600;
            border-radius: 9999px;
            padding: 4px 12px;
            letter-spacing: 0.02em;
        }
        
        .backpic-bg {
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }
        
        .backpic-bg-2 {
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }
        
        .img-placeholder {
            display: flex;
            align-items: center;
            justify-content: center;
            background-color: #E8E4DD;
            color: var(--slate-mist);
            font-size: 0.85rem;
            min-height: 100px;
            width: 100%;
            object-fit: cover;
        }
        
        .faq-item {
            border-bottom: 1px solid rgba(29,59,51,0.1);
        }
        
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 0;
            font-weight: 700;
            color: var(--deep-pine);
            cursor: pointer;
            transition: color 0.25s ease;
            font-size: 1rem;
        }
        
        .faq-question:hover {
            color: var(--brass-gold);
        }
        
        .faq-question .icon-toggle {
            font-size: 1.5rem;
            font-weight: 300;
            color: var(--brass-gold);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        
        .faq-question.open .icon-toggle {
            transform: rotate(45deg);
        }
        
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
            padding: 0 1rem 0 0;
            color: var(--slate-mist);
            font-size: 0.95rem;
            line-height: 1.75;
        }
        
        .faq-answer.show {
            max-height: 500px;
            padding-bottom: 1rem;
        }
        
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background-color: rgba(255,255,255,0.08);
            border: 1px solid rgba(255,255,255,0.12);
            border-radius: 9999px;
            padding: 6px 14px;
            font-size: 0.8rem;
            color: rgba(255,255,255,0.7);
        }
        
        .grid-pattern {
            position: relative;
            overflow: hidden;
        }
        
        .grid-pattern::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: linear-gradient(rgba(201,169,110,0.06) 1px, transparent 1px),
                              linear-gradient(90deg, rgba(201,169,110,0.06) 1px, transparent 1px);
            background-size: 60px 60px;
            pointer-events: none;
        }
        
        .float-animation {
            animation: float 12s ease-in-out infinite;
        }
        
        @keyframes float {
            0%, 100% { transform: translate(0, 0); }
            25% { transform: translate(10px, -10px); }
            50% { transform: translate(-5px, 5px); }
            75% { transform: translate(8px, -8px); }
        }
        
        .number-count {
            font-variant-numeric: tabular-nums;
        }
        
        .card-list-item {
            transition: background-color 0.25s ease, transform 0.25s ease;
            border-radius: 8px;
            padding: 0.75rem;
        }
        
        .card-list-item:hover {
            background-color: rgba(201,169,110,0.08);
            transform: translateX(4px);
        }
        
        .timeline-item {
            position: relative;
            padding-left: 1.75rem;
        }
        
        .timeline-item::before {
            content: '';
            position: absolute;
            left: 0;
            top: 6px;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background-color: var(--brass-gold);
            border: 2px solid var(--deep-pine);
        }
        
        .timeline-item::after {
            content: '';
            position: absolute;
            left: 4px;
            top: 24px;
            width: 2px;
            height: calc(100% - 8px);
            background-color: rgba(201,169,110,0.3);
        }
        
        .timeline-item:last-child::after {
            display: none;
        }
        
        .cta-frame {
            position: relative;
        }
        
        .cta-frame::before,
        .cta-frame::after {
            content: '';
            position: absolute;
            width: 48px;
            height: 48px;
            pointer-events: none;
        }
        
        .cta-frame::before {
            top: 16px;
            left: 16px;
            border-top: 2px solid rgba(201,169,110,0.5);
            border-left: 2px solid rgba(201,169,110,0.5);
        }
        
        .cta-frame::after {
            bottom: 16px;
            right: 16px;
            border-bottom: 2px solid rgba(201,169,110,0.5);
            border-right: 2px solid rgba(201,169,110,0.5);
        }
        
        @media (max-width: 768px) {
            .cta-frame::before,
            .cta-frame::after {
                display: none;
            }
        }
        
        .mobile-menu {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }
        
        .mobile-menu.open {
            max-height: 400px;
        }
        
        .form-input {
            width: 100%;
            border: 1px solid rgba(29,59,51,0.15);
            border-radius: 8px;
            padding: 0.75rem 1rem;
            font-size: 0.9rem;
            color: var(--ink);
            background-color: #fafaf9;
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
        }
        
        .form-input:focus {
            outline: none;
            border-color: var(--brass-gold);
            box-shadow: 0 0 0 3px rgba(201,169,110,0.2);
        }
        
        .form-input::placeholder {
            color: #aaa;
        }
        
        .modal-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background-color: rgba(18,30,26,0.6);
            backdrop-filter: blur(4px);
            z-index: 100;
            align-items: center;
            justify-content: center;
            padding: 1rem;
        }
        
        .modal-overlay.show {
            display: flex;
        }
        
        .modal-panel {
            background-color: #fff;
            border-radius: 24px;
            position: relative;
            max-width: 520px;
            width: 100%;
            padding: 2rem;
            animation: modalIn 0.3s ease;
        }
        
        .modal-panel::before {
            content: '';
            position: absolute;
            top: 0;
            left: 24px;
            right: 24px;
            height: 4px;
            background-color: var(--brass-gold);
            border-radius: 0 0 4px 4px;
        }
        
        @keyframes modalIn {
            from { transform: scale(0.92); opacity: 0; }
            to { transform: scale(1); opacity: 1; }
        }
        
        @media (max-width: 640px) {
            .modal-panel {
                border-radius: 24px 24px 0 0;
                padding: 1.75rem 1.25rem;
                max-height: 90vh;
                overflow-y: auto;
            }
        }
        
        @keyframes fadeInUp {
            from { opacity: 0; transform: translateY(12px); }
            to { opacity: 1; transform: translateY(0); }
        }
        
        .card-item {
            animation: fadeInUp 0.5s ease both;
        }
        
        .card-item:nth-child(1) { animation-delay: 0.05s; }
        .card-item:nth-child(2) { animation-delay: 0.1s; }
        .card-item:nth-child(3) { animation-delay: 0.15s; }
        .card-item:nth-child(4) { animation-delay: 0.2s; }
        .card-item:nth-child(5) { animation-delay: 0.25s; }
        .card-item:nth-child(6) { animation-delay: 0.3s; }
        
        .pagination-item {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 8px;
            border: 1px solid rgba(29,59,51,0.15);
            font-size: 0.85rem;
            color: var(--slate-mist);
            transition: all 0.25s ease;
            text-decoration: none;
        }
        
        .pagination-item:hover {
            border-color: var(--brass-gold);
            color: var(--deep-pine);
            background-color: rgba(201,169,110,0.08);
        }
        
        .pagination-item.active {
            background-color: var(--deep-pine);
            color: #fff;
            border-color: var(--deep-pine);
        }
        
        a {
            color: inherit;
            text-decoration: none;
        }
        
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        
        .link-arrow {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--brass-gold);
            font-weight: 600;
            font-size: 0.9rem;
            transition: gap 0.25s ease;
        }
        
        .link-arrow:hover {
            gap: 10px;
        }

/* roulang page: category2 */
:root {
            --deep-pine: #1D3B33;
            --brass-gold: #C9A96E;
            --parchment: #FAF8F5;
            --dark-ink: #121E1A;
            --ink: #23241F;
            --slate-mist: #6B7C75;
            --footer-dark: #141B18;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            background: var(--parchment);
            color: var(--ink);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        .container-main {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }
        @media (min-width: 768px) {
            .container-main {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }
        .nav-link {
            position: relative;
            color: var(--slate-mist);
            font-size: 0.925rem;
            font-weight: 500;
            padding: 0.25rem 0;
            transition: color 0.25s ease;
            text-decoration: none;
            letter-spacing: 0.01em;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2px;
            background: var(--brass-gold);
            border-radius: 2px;
            transition: width 0.25s ease;
        }
        .nav-link:hover {
            color: var(--deep-pine);
        }
        .nav-link:hover::after {
            width: 100%;
        }
        .nav-link.active {
            color: var(--deep-pine);
            font-weight: 700;
        }
        .nav-link.active::after {
            width: 100%;
        }
        .hero-lines {
            position: absolute;
            inset: 0;
            pointer-events: none;
            overflow: hidden;
        }
        .hero-lines::before {
            content: '';
            position: absolute;
            top: 18%;
            right: 8%;
            width: 120px;
            height: 120px;
            border: 1px solid rgba(201, 169, 110, 0.25);
            border-radius: 50%;
            animation: heroFloat 12s ease-in-out infinite;
        }
        .hero-lines::after {
            content: '';
            position: absolute;
            bottom: 20%;
            left: 5%;
            width: 160px;
            height: 160px;
            border: 1px solid rgba(201, 169, 110, 0.15);
            border-radius: 50%;
            animation: heroFloat 14s ease-in-out infinite reverse;
        }
        @keyframes heroFloat {
            0%,
            100% {
                transform: translateY(0) scale(1);
            }
            50% {
                transform: translateY(-12px) scale(1.03);
            }
        }
        .help-card {
            transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
            border: 1px solid rgba(29, 59, 51, 0.1);
            border-radius: 16px;
            background: #fff;
            overflow: hidden;
        }
        .help-card:hover {
            transform: translateY(-4px);
            border-color: rgba(201, 169, 110, 0.4);
            box-shadow: 0 12px 30px -12px rgba(18, 30, 26, 0.2);
        }
        .help-card:nth-child(n+3) {
            transform: translateY(16px);
        }
        .help-card:nth-child(n+3):hover {
            transform: translateY(12px);
        }
        @media (max-width: 767px) {
            .help-card:nth-child(n+3) {
                transform: none;
            }
            .help-card:nth-child(n+3):hover {
                transform: translateY(-4px);
            }
        }
        .badge-official {
            display: inline-block;
            font-size: 0.68rem;
            font-weight: 600;
            color: var(--brass-gold);
            border: 1px solid rgba(201, 169, 110, 0.4);
            border-radius: 9999px;
            padding: 0.1rem 0.55rem;
            letter-spacing: 0.02em;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: var(--brass-gold);
            color: var(--deep-pine);
            font-weight: 700;
            border-radius: 10px;
            padding: 0.75rem 1.7rem;
            transition: all 0.25s ease;
            border: none;
            cursor: pointer;
            text-decoration: none;
            font-size: 0.95rem;
        }
        .btn-primary:hover {
            background: #B89558;
            box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.1);
            transform: scale(0.98);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: #fff;
            font-weight: 500;
            border-radius: 10px;
            padding: 0.75rem 1.7rem;
            transition: all 0.25s ease;
            background: transparent;
            cursor: pointer;
            text-decoration: none;
            font-size: 0.95rem;
        }
        .btn-secondary:hover {
            border-color: var(--brass-gold);
            color: var(--brass-gold);
        }
        .section-title {
            font-size: 1.75rem;
            font-weight: 800;
            color: var(--deep-pine);
            letter-spacing: -0.02em;
            line-height: 1.25;
        }
        .section-title-bar {
            width: 40px;
            height: 2px;
            background: var(--brass-gold);
            border-radius: 2px;
            margin-top: 14px;
        }
        @media (min-width: 768px) {
            .section-title {
                font-size: 2.25rem;
            }
        }
        .faq-item {
            border-bottom: 1px solid rgba(29, 59, 51, 0.1);
        }
        .faq-item:last-child {
            border-bottom: none;
        }
        .faq-q {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1.25rem 0;
            font-weight: 700;
            color: var(--deep-pine);
            font-size: 1rem;
            cursor: pointer;
            transition: color 0.25s ease;
        }
        .faq-q:hover {
            color: var(--brass-gold);
        }
        .faq-q .icon {
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(201, 169, 110, 0.15);
            color: var(--brass-gold);
            font-size: 1rem;
            font-weight: 700;
            transition: transform 0.3s ease, background 0.3s ease;
            flex-shrink: 0;
        }
        .faq-item.open .icon {
            transform: rotate(45deg);
            background: var(--brass-gold);
            color: #fff;
        }
        .faq-a {
            max-height: 0;
            overflow: hidden;
            color: var(--slate-mist);
            transition: max-height 0.35s ease;
            line-height: 1.7;
            font-size: 0.95rem;
        }
        .faq-a-inner {
            padding-bottom: 1.25rem;
        }
        .footer-link {
            color: rgba(255, 255, 255, 0.5);
            transition: color 0.25s ease;
            text-decoration: none;
            font-size: 0.875rem;
        }
        .footer-link:hover {
            color: var(--brass-gold);
        }
        .gold-frame {
            position: absolute;
            inset: 0;
            pointer-events: none;
        }
        .gold-frame::before {
            content: '';
            position: absolute;
            top: 16px;
            left: 16px;
            right: 16px;
            bottom: 16px;
            border: 1px solid rgba(201, 169, 110, 0.25);
            border-radius: 24px;
            pointer-events: none;
        }
        @media (max-width: 767px) {
            .gold-frame {
                display: none;
            }
        }
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 0;
            right: 0;
            bottom: 0;
            width: 280px;
            background: var(--parchment);
            z-index: 9999;
            padding: 2rem 1.5rem;
            box-shadow: -20px 0 50px rgba(0, 0, 0, 0.15);
            flex-direction: column;
            gap: 1.25rem;
        }
        .mobile-drawer.open {
            display: flex;
        }
        .drawer-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(18, 30, 26, 0.4);
            z-index: 9998;
            backdrop-filter: blur(2px);
        }
        .drawer-overlay.open {
            display: block;
        }
        .mobile-drawer .nav-link {
            font-size: 1.05rem;
            padding: 0.6rem 0;
            color: var(--deep-pine);
        }
        .mobile-drawer .nav-link.active {
            color: var(--brass-gold);
            font-weight: 700;
        }
        .search-box {
            width: 0;
            opacity: 0;
            overflow: hidden;
            transition: all 0.3s ease;
            border-radius: 8px;
            padding: 0;
            border: 1px solid rgba(29, 59, 51, 0.15);
            background: #fff;
            font-size: 0.875rem;
            color: var(--ink);
        }
        .search-box.open {
            width: 180px;
            opacity: 1;
            padding: 0.45rem 0.9rem;
        }
        .search-box:focus {
            outline: 2px solid rgba(201, 169, 110, 0.5);
        }

/* roulang page: category4 */
:root {
            --deep-pine: #1D3B33;
            --brass-gold: #C9A96E;
            --brass-gold-dark: #B89558;
            --parchment: #FAF8F5;
            --dark-ink: #121E1A;
            --ink: #23241F;
            --slate-mist: #6B7C75;
            --footer-dark: #141B18;
            --card-radius: 16px;
            --btn-radius: 10px;
            --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--parchment);
            color: var(--ink);
            line-height: 1.75;
            font-size: 16px;
        }

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

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

        button {
            cursor: pointer;
        }

        input,
        textarea {
            font-family: inherit;
        }

        .container-main {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }

        @media (min-width: 768px) {
            .container-main {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }

        /* ===== 导航 ===== */
        .nav-link {
            position: relative;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--slate-mist);
            padding: 0.25rem 0;
            transition: color 0.25s ease;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0%;
            height: 2px;
            background: var(--brass-gold);
            border-radius: 2px;
            transition: width 0.3s ease;
        }

        .nav-link:hover {
            color: var(--deep-pine);
        }

        .nav-link:hover::after {
            width: 100%;
        }

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

        .nav-link.active::after {
            width: 100%;
        }

        /* ===== 按钮 ===== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            padding: 0.75rem 1.75rem;
            background: var(--brass-gold);
            color: var(--deep-pine);
            font-weight: 700;
            font-size: 0.95rem;
            border-radius: var(--btn-radius);
            border: 1px solid transparent;
            transition: all 0.25s ease;
        }

        .btn-primary:hover {
            background: var(--brass-gold-dark);
            box-shadow: inset 0 2px 4px rgba(0,0,0,0.1);
            transform: scale(0.98);
        }

        .btn-primary:focus {
            outline: 2px solid var(--brass-gold);
            outline-offset: 2px;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            padding: 0.75rem 1.75rem;
            background: transparent;
            color: #fff;
            font-weight: 500;
            font-size: 0.95rem;
            border-radius: var(--btn-radius);
            border: 1px solid rgba(255,255,255,0.3);
            transition: all 0.25s ease;
        }

        .btn-secondary:hover {
            border-color: var(--brass-gold);
            color: var(--brass-gold);
        }

        .btn-secondary:focus {
            outline: 2px solid rgba(201,169,110,0.5);
            outline-offset: 2px;
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            background-color: var(--dark-ink);
            overflow: hidden;
            padding: 5rem 0;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -100px;
            right: -100px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(201,169,110,0.08) 0%, transparent 70%);
            animation: float-geo 12s ease-in-out infinite;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -80px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(201,169,110,0.05) 0%, transparent 70%);
            animation: float-geo 12s ease-in-out infinite reverse;
        }

        @keyframes float-geo {
            0%,100% { transform: translate(0,0) rotate(0deg); }
            25% { transform: translate(-20px,20px) rotate(5deg); }
            50% { transform: translate(20px,-10px) rotate(-3deg); }
            75% { transform: translate(-10px,-20px) rotate(8deg); }
        }

        .hero-bg-img {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.15;
        }

        .hero-content {
            position: relative;
            z-index: 2;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.4rem 0.9rem;
            background: rgba(201,169,110,0.12);
            border: 1px solid rgba(201,169,110,0.3);
            border-radius: 999px;
            font-size: 0.75rem;
            color: var(--brass-gold);
        }

        /* ===== 卡片通用 ===== */
        .card-hover {
            transition: all 0.25s ease;
        }

        .card-hover:hover {
            transform: translateY(-4px);
            border-color: rgba(201,169,110,0.4) !important;
            box-shadow: 0 12px 30px -12px rgba(18,30,26,0.2);
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            color: var(--brass-gold);
            text-transform: uppercase;
        }

        .section-divider {
            width: 40px;
            height: 2px;
            background: var(--brass-gold);
            border-radius: 2px;
            margin-top: 16px;
        }

        /* ===== 时间线 ===== */
        .timeline {
            position: relative;
            padding-left: 2.2rem;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 4px;
            bottom: 4px;
            width: 2px;
            background: linear-gradient(to bottom, rgba(201,169,110,0.2), rgba(201,169,110,0.6), rgba(201,169,110,0.2));
            border-radius: 2px;
        }

        .timeline-item {
            position: relative;
            padding-bottom: 2.5rem;
        }

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

        .timeline-item::before {
            content: '';
            position: absolute;
            left: -2.2rem;
            top: 6px;
            width: 18px;
            height: 18px;
            border-radius: 50%;
            background: var(--parchment);
            border: 3px solid var(--brass-gold);
            box-shadow: 0 0 0 4px rgba(201,169,110,0.15);
        }

        .timeline-date {
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--brass-gold);
            letter-spacing: 0.05em;
        }

        /* ===== 数据区 ===== */
        .stats-section {
            background: var(--dark-ink);
            position: relative;
            overflow: hidden;
        }

        .stats-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(to right, transparent, rgba(201,169,110,0.5), transparent);
        }

        .stat-item {
            text-align: center;
            padding: 2rem 1rem;
        }

        .stat-number {
            font-size: 2.8rem;
            line-height: 1.2;
            font-weight: 800;
            color: var(--brass-gold);
            letter-spacing: -0.02em;
        }

        .stat-label {
            margin-top: 0.5rem;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.7);
            letter-spacing: 0.05em;
        }

        @media (max-width: 768px) {
            .stat-number {
                font-size: 2rem;
            }
        }

        /* ===== FAQ ===== */
        .faq-item {
            border-bottom: 1px solid rgba(29,59,51,0.1);
        }

        .faq-item:last-child {
            border-bottom: none;
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1.25rem 0;
            font-weight: 700;
            font-size: 1rem;
            color: var(--deep-pine);
            cursor: pointer;
            transition: color 0.25s ease;
        }

        .faq-question:hover {
            color: var(--brass-gold-dark);
        }

        .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(201,169,110,0.15);
            color: var(--brass-gold);
            font-size: 0.9rem;
            transition: transform 0.3s ease;
        }

        .faq-item.active .faq-icon {
            transform: rotate(135deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, opacity 0.3s ease;
            opacity: 0;
            font-size: 0.95rem;
            color: var(--slate-mist);
            line-height: 1.8;
        }

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

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            background: var(--dark-ink);
            overflow: hidden;
        }

        .cta-section::before,
        .cta-section::after {
            content: '';
            position: absolute;
            width: 80px;
            height: 80px;
            border: 2px solid rgba(201,169,110,0.3);
            border-radius: 4px;
        }

        .cta-section::before {
            top: 16px;
            left: 16px;
            border-right: none;
            border-bottom: none;
        }

        .cta-section::after {
            bottom: 16px;
            right: 16px;
            border-left: none;
            border-top: none;
        }

        @media (max-width: 768px) {
            .cta-section::before,
            .cta-section::after {
                display: none;
            }
        }

        /* ===== 图片占位 ===== */
        .img-placeholder {
            background: #EEEDE8;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #A0A09A;
            font-size: 0.85rem;
        }

        /* ===== 滚动条 ===== */
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--parchment);
        }
        ::-webkit-scrollbar-thumb {
            background: rgba(29,59,51,0.3);
            border-radius: 8px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: rgba(29,59,51,0.5);
        }

        /* ===== 移动端菜单 ===== */
        .mobile-menu {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
            border-bottom: 1px solid rgba(29,59,51,0.08);
        }

        .mobile-menu.open {
            max-height: 400px;
        }

        .mobile-menu .nav-link {
            display: block;
            padding: 0.65rem 0;
            border-bottom: 1px solid rgba(29,59,51,0.05);
        }

        .mobile-menu .nav-link:last-child {
            border-bottom: none;
        }