/* roulang page: index */
:root {
  --primary: #1E5D4F;
  --dark-primary: #163F36;
  --tint-primary: #E8F2EF;
  --accent: #E86A33;
  --gold: #C9A227;
  --background: #F7F5F2;
  --dark-section: #0F2E28;
  --text-primary: #1C1C1C;
  --text-secondary: #64706B;
  --text-light: #94A09B;
  --border-color: #E5E0D8;
  --radius-card: 1rem;
  --radius-btn: 9999px;
  --shadow-sm: 0 4px 20px rgba(15,46,40,0.06);
  --shadow-md: 0 8px 32px rgba(15,46,40,0.12);
  --transition-base: all 0.3s ease-out;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  line-height: 1.6;
  background-color: var(--background);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font: inherit; cursor: pointer; border: none; background: none; }
input { font: inherit; }
ul, ol { list-style: none; }

.container { max-width: 1280px; margin: 0 auto; padding: 0 1rem; }
@media (min-width: 768px) { .container { padding: 0 1.5rem; } }
@media (min-width: 1024px) { .container { padding: 0 2rem; } }

.grid-texture {
  background-image:
    linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size: 60px 60px;
}
.grid-texture-dark {
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 50px 50px;
}

.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  height: 64px;
  background: transparent;
  transition: var(--transition-base);
}
.site-header.scrolled {
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 2px 16px rgba(15,46,40,0.08);
}
.site-header .nav-link {
  font-size: 14px;
  font-weight: 500;
  color: rgba(255,255,255,0.85);
  transition: color 0.2s ease;
  position: relative;
}
.site-header .nav-link:hover { color: #fff; }
.site-header .nav-link.active { color: #fff; font-weight: 700; }
.site-header .nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--gold);
  border-radius: 2px;
}
.site-header.scrolled .nav-link { color: rgba(28,28,28,0.8); }
.site-header.scrolled .nav-link:hover { color: var(--primary); }
.site-header.scrolled .nav-link.active { color: var(--primary); }
.site-header.scrolled .logo-text { color: var(--text-primary); }
.site-header.scrolled .logo-icon { background: var(--primary); }

.logo-icon {
  width: 36px; height: 36px;
  background: rgba(255,255,255,0.15);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-base);
}
.site-header.scrolled .logo-icon { background: rgba(30,93,79,0.1); }

.cta-btn {
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 20px;
  border-radius: var(--radius-btn);
  transition: var(--transition-base);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 44px;
}
.cta-btn:hover { background: #D15A24; transform: translateY(-1px); box-shadow: 0 8px 24px rgba(232,106,51,0.3); }
.cta-btn:active { transform: scale(0.95); }
.cta-btn:focus-visible { outline: none; box-shadow: 0 0 0 4px rgba(232,106,51,0.3); }
.cta-btn-white {
  background: #fff;
  color: var(--primary);
  font-weight: 700;
  padding: 14px 32px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  transition: var(--transition-base);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 48px;
}
.cta-btn-white:hover { background: var(--tint-primary); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.2); }
.cta-btn-white:active { transform: scale(0.95); }
.cta-btn-ghost {
  background: transparent;
  color: #fff;
  border: 1.5px solid rgba(255,255,255,0.6);
  font-weight: 600;
  padding: 14px 32px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  transition: var(--transition-base);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 48px;
}
.cta-btn-ghost:hover { border-color: #fff; background: rgba(255,255,255,0.1); transform: translateY(-2px); }
.cta-btn-ghost:active { transform: scale(0.95); }

/* 斜切过渡 */
.hero-slant {
  position: absolute;
  bottom: -30px;
  left: 0;
  width: 100%;
  height: 80px;
  background: var(--background);
  transform: skewY(-1deg);
  transform-origin: bottom left;
  z-index: 2;
}

/* 步骤连接线 */
.steps-line {
  border-top: 2px dashed rgba(201,162,39,0.4);
  position: absolute;
  top: 48px;
  left: 10%;
  right: 10%;
}
@media (max-width: 768px) {
  .steps-line {
    display: none;
  }
}

/* FAQ 手风琴 */
.faq-item { border-bottom: 1px solid var(--border-color); }
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-align: left;
  padding: 20px 0;
  font-weight: 600;
  font-size: 16px;
  color: var(--text-primary);
  min-height: 56px;
  transition: color 0.2s;
}
.faq-question:hover { color: var(--primary); }
.faq-icon {
  width: 28px; height: 28px;
  border-radius: 50%;
  border: 1.5px solid var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 18px;
  flex-shrink: 0;
  transition: transform 0.3s ease, background-color 0.3s, color 0.3s;
  line-height: 1;
}
.faq-item.active .faq-icon {
  transform: rotate(45deg);
  background: var(--primary);
  color: #fff;
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.3s ease;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 28px;
  padding: 0;
}
.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 0 40px 20px 0;
}

/* 图片加载底 */
.img-placeholder {
  background: var(--tint-primary);
}

/* 表单 */
.form-input {
  width: 100%;
  border-radius: 0.75rem;
  border: 1px solid var(--border-color);
  background: #fff;
  padding: 14px 16px;
  font-size: 14px;
  color: var(--text-primary);
  transition: var(--transition-base);
}
.form-input::placeholder { color: var(--text-light); }
.form-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(30,93,79,0.15);
}

/* 卡片通用 */
.hover-card {
  transition: var(--transition-base);
}
.hover-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

/* 空态 */
.empty-state-icon {
  width: 64px; height: 64px;
  background: var(--tint-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 12px;
}

/* 移动端菜单 */
.mobile-menu {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: var(--dark-section);
  z-index: 100;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 32px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s;
}
.mobile-menu.open { opacity: 1; visibility: visible; }
.mobile-menu a {
  font-size: 24px;
  font-weight: 700;
  color: rgba(255,255,255,0.9);
  transition: color 0.2s;
}
.mobile-menu a:hover { color: var(--gold); }

/* 徽章批量定义 */
.badge-primary {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: 9999px;
  font-size: 12px;
  font-weight: 600;
  background: var(--tint-primary);
  color: var(--primary);
}
.badge-gold {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: 9999px;
  font-size: 12px;
  font-weight: 600;
  background: rgba(201,162,39,0.1);
  color: #8A6D10;
  border: 1px solid rgba(201,162,39,0.3);
}

/* 数据数字 */
.stat-number {
  font-size: 40px;
  font-weight: 800;
  color: var(--gold);
  font-family: "SF Mono", "Cascadia Code", Consolas, monospace;
  line-height: 1.1;
}
@media (max-width: 768px) {
  .stat-number { font-size: 32px; }
}

/* 页脚链接 */
.footer-link {
  color: rgba(255,255,255,0.7);
  font-size: 14px;
  transition: color 0.2s;
}
.footer-link:hover { color: #fff; }

/* 金色细线 */
.gold-line {
  width: 64px;
  height: 1px;
  background: var(--gold);
}

/* 滚动条 */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--background); }
::-webkit-scrollbar-thumb { background: #C8C4BC; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #A8A49C; }

/* 响应式微调 */
@media (max-width: 640px) {
  .cta-btn-white { padding: 12px 24px; font-size: 14px; min-height: 44px; }
  .cta-btn-ghost { padding: 12px 24px; font-size: 14px; min-height: 44px; }
  .faq-question { font-size: 15px; }
  .hero-title { font-size: 28px; line-height: 1.2; }
}

/* roulang page: category1 */
:root {
            --primary: #1E5D4F;
            --primary-dark: #163F36;
            --primary-tint: #E8F2EF;
            --accent: #E86A33;
            --accent-dark: #D15A24;
            --gold: #C9A227;
            --gold-dark: #8A6D10;
            --bg: #F7F5F2;
            --dark: #0F2E28;
            --text: #1C1C1C;
            --text-secondary: #64706B;
            --text-muted: #94A09B;
            --border: #E5E0D8;
            --radius: 16px;
            --shadow-sm: 0 4px 20px rgba(15, 46, 40, 0.06);
            --shadow-md: 0 8px 32px rgba(15, 46, 40, 0.12);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

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

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

        button {
            font-family: inherit;
            cursor: pointer;
        }

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

        @media (min-width: 768px) {
            .container {
                padding: 0 1.5rem;
            }
        }

        @media (min-width: 1024px) {
            .container {
                padding: 0 2rem;
            }
        }

        /* ===== 网格纹理 ===== */
        .grid-texture {
            background-image:
                linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
            background-size: 44px 44px;
        }

        .grid-texture-dark {
            background-image:
                linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
            background-size: 44px 44px;
        }

        /* ===== 金色细线 ===== */
        .gold-line {
            width: 64px;
            height: 1px;
            background: var(--gold);
        }

        /* ===== 导航 ===== */
        #siteHeader {
            transition: all 0.3s ease-out;
        }

        .nav-link {
            font-size: 0.875rem;
            font-weight: 500;
            color: rgba(28, 28, 28, 0.8);
            transition: color 0.3s ease-out;
            position: relative;
        }

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

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

        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -6px;
            width: 22px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }

        .footer-link {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.875rem;
            line-height: 1.5;
            transition: color 0.3s ease-out;
        }

        .footer-link:hover {
            color: #fff;
        }

        /* ===== 按钮 ===== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.375rem;
            background: var(--accent);
            color: #fff;
            font-size: 0.875rem;
            font-weight: 600;
            padding: 0.6rem 1.4rem;
            border-radius: 9999px;
            transition: all 0.3s ease-out;
            border: none;
            min-height: 44px;
        }

        .btn-primary:hover {
            background: var(--accent-dark);
            transform: translateY(-1px);
            box-shadow: 0 8px 24px rgba(232, 106, 51, 0.35);
        }

        .btn-primary:active {
            transform: scale(0.95);
        }

        .btn-primary:focus-visible {
            outline: none;
            box-shadow: 0 0 0 4px rgba(232, 106, 51, 0.25);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.375rem;
            border: 1px solid var(--primary);
            color: var(--primary);
            background: transparent;
            font-size: 0.875rem;
            font-weight: 600;
            padding: 0.6rem 1.4rem;
            border-radius: 9999px;
            transition: all 0.3s ease-out;
            min-height: 44px;
        }

        .btn-secondary:hover {
            background: var(--primary-tint);
        }

        .btn-secondary:active {
            transform: scale(0.95);
        }

        .btn-secondary:focus-visible {
            outline: none;
            box-shadow: 0 0 0 4px rgba(30, 93, 79, 0.2);
        }

        .btn-white {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.375rem;
            background: #fff;
            color: var(--primary);
            font-size: 0.875rem;
            font-weight: 700;
            padding: 0.6rem 1.4rem;
            border-radius: 9999px;
            transition: all 0.3s ease-out;
            border: none;
            min-height: 44px;
        }

        .btn-white:hover {
            transform: translateY(-1px);
            box-shadow: 0 8px 24px rgba(255, 255, 255, 0.2);
        }

        .btn-white:active {
            transform: scale(0.95);
        }

        /* ===== 卡片 ===== */
        .card-hover {
            transition: all 0.3s ease-out;
        }

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

        /* ===== 徽章 ===== */
        .badge-category {
            display: inline-flex;
            align-items: center;
            padding: 0.25rem 0.75rem;
            border-radius: 9999px;
            font-size: 0.75rem;
            font-weight: 600;
            background: var(--primary-tint);
            color: var(--primary);
            white-space: nowrap;
        }

        .badge-gold {
            display: inline-flex;
            align-items: center;
            padding: 0.25rem 0.75rem;
            border-radius: 9999px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(201, 162, 39, 0.1);
            color: var(--gold-dark);
            border: 1px solid rgba(201, 162, 39, 0.3);
            white-space: nowrap;
        }

        /* ===== 输入框 ===== */
        .form-input {
            width: 100%;
            border-radius: 12px;
            border: 1px solid var(--border);
            background: #fff;
            padding: 0.75rem 1rem;
            font-size: 0.875rem;
            color: var(--text);
            transition: all 0.3s ease-out;
        }

        .form-input::placeholder {
            color: var(--text-muted);
        }

        .form-input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(30, 93, 79, 0.15);
        }

        /* ===== FAQ 手风琴 ===== */
        .faq-item {
            border-bottom: 1px solid var(--border);
            padding: 1.25rem 0;
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            text-align: left;
            font-weight: 600;
            font-size: 1rem;
            line-height: 1.5;
            color: var(--text);
            background: none;
            border: none;
            padding: 0.5rem 0;
            cursor: pointer;
            transition: color 0.3s ease-out;
        }

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

        .faq-icon {
            font-size: 1.5rem;
            font-weight: 400;
            color: var(--primary);
            line-height: 1;
            flex-shrink: 0;
            margin-left: 1rem;
            transition: transform 0.3s ease-out;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease-out, padding 0.35s ease-out;
            padding: 0;
            color: var(--text-secondary);
            font-size: 0.875rem;
            line-height: 1.75;
        }

        .faq-item.active .faq-answer {
            max-height: 240px;
            padding-top: 0.5rem;
        }

        /* ===== 移动端菜单 ===== */
        #mobileMenu {
            position: fixed;
            inset: 0;
            background: rgba(15, 46, 40, 0.98);
            z-index: 90;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 2rem;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s ease-out, visibility 0.3s;
        }

        #mobileMenu.open {
            opacity: 1;
            visibility: visible;
        }

        #mobileMenu a {
            color: #fff;
            font-size: 1.5rem;
            font-weight: 700;
            opacity: 0.8;
            transition: opacity 0.3s ease-out;
        }

        #mobileMenu a:hover,
        #mobileMenu a.active {
            opacity: 1;
            color: var(--accent);
        }

        /* ===== Animations ===== */
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(24px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

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

        .animate-fade-up-delay-1 {
            animation: fadeUp 0.6s ease-out 0.15s both;
        }

        .animate-fade-up-delay-2 {
            animation: fadeUp 0.6s ease-out 0.3s both;
        }

        /* ===== 步骤流程水平虚线 ===== */
        .step-line {
            position: absolute;
            top: 2.5rem;
            left: 15%;
            right: 15%;
            border-top: 2px dashed rgba(201, 162, 39, 0.4);
            z-index: 0;
        }

        @media (max-width: 767px) {
            .step-line {
                left: 2.5rem;
                right: auto;
                top: 15%;
                bottom: 15%;
                width: 0;
                border-top: none;
                border-left: 2px dashed rgba(201, 162, 39, 0.4);
            }
        }

        /* ===== 斜切过渡 ===== */
        .skew-divider {
            transform: skewY(-1deg);
            transform-origin: bottom;
        }

        /* ===== Focus visible ===== */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--gold);
            outline-offset: 2px;
        }

        /* ===== 图片占位底色 ===== */
        .img-placeholder {
            background: var(--primary-tint);
        }

/* roulang page: article */
:root {
            --primary: #1E5D4F;
            --primary-dark: #163F36;
            --primary-tint: #E8F2EF;
            --accent: #E86A33;
            --accent-dark: #D15A24;
            --gold: #C9A227;
            --gold-dark: #8A6D10;
            --bg: #F7F5F2;
            --dark-section: #0F2E28;
            --text-primary: #1C1C1C;
            --text-secondary: #64706B;
            --text-weak: #94A09B;
            --border: #E5E0D8;
            --radius-lg: 1rem;
            --radius-md: .75rem;
            --radius-sm: .5rem;
            --shadow-card: 0 4px 20px rgba(15, 46, 40, .06);
            --shadow-hover: 0 8px 32px rgba(15, 46, 40, .12);
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
            background: var(--bg);
            color: var(--text-primary);
            font-size: 16px;
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            background: none;
            border: none;
        }
        input {
            font-family: inherit;
        }

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

        @media (min-width:768px) {
            .container {
                padding-left: 1.5rem;
                padding-right: 1.5rem;
            }
        }
        @media (min-width:1024px) {
            .container {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }

        .gold-line {
            height: 1px;
            width: 4rem;
            background: var(--gold);
        }

        /* 导航 */
        .site-header {
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid transparent;
            transition: all .3s ease-out;
        }
        .site-header.scrolled {
            background: rgba(255, 255, 255, .97);
            border-bottom-color: var(--border);
            box-shadow: 0 4px 20px rgba(15, 46, 40, .08);
        }
        .logo-box {
            width: 2.25rem;
            height: 2.25rem;
            background: var(--primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: .7rem;
            letter-spacing: .02em;
        }
        .logo-text {
            font-weight: 800;
            font-size: 1.125rem;
            letter-spacing: -.02em;
            color: var(--text-primary);
        }
        .nav-link {
            font-size: .875rem;
            font-weight: 500;
            color: rgba(28, 28, 28, .8);
            transition: color .25s ease;
            position: relative;
        }
        .nav-link:hover {
            color: var(--primary);
        }
        .nav-link.active {
            color: var(--primary);
            font-weight: 700;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -6px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        /* 按钮 */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--accent);
            color: #fff;
            font-size: .875rem;
            font-weight: 600;
            padding: .65rem 1.5rem;
            border-radius: 999px;
            min-height: 44px;
            transition: all .3s ease-out;
            white-space: nowrap;
        }
        .btn-primary:hover {
            background: var(--accent-dark);
            box-shadow: 0 8px 24px rgba(232, 106, 51, .35);
            transform: translateY(-1px);
        }
        .btn-primary:active {
            transform: scale(.95);
        }
        .btn-primary:focus-visible {
            outline: 4px solid rgba(232, 106, 51, .3);
            outline-offset: 2px;
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--primary);
            color: var(--primary);
            font-size: .875rem;
            font-weight: 600;
            padding: .65rem 1.5rem;
            border-radius: 999px;
            min-height: 44px;
            background: transparent;
            transition: all .3s ease-out;
            white-space: nowrap;
        }
        .btn-secondary:hover {
            background: var(--primary-tint);
        }
        .btn-secondary:active {
            transform: scale(.95);
        }
        .btn-secondary:focus-visible {
            outline: 4px solid rgba(30, 93, 79, .2);
            outline-offset: 2px;
        }

        /* 搜索 */
        .search-wrap {
            position: relative;
        }
        .search-btn {
            width: 2.5rem;
            height: 2.5rem;
            border-radius: 999px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            transition: all .25s ease;
        }
        .search-btn:hover {
            background: var(--primary-tint);
            color: var(--primary);
        }
        .search-input {
            position: absolute;
            right: 0;
            top: calc(100% + 8px);
            width: 240px;
            padding: .65rem 1rem;
            border-radius: .75rem;
            border: 1px solid var(--border);
            background: #fff;
            box-shadow: var(--shadow-hover);
            font-size: .875rem;
            opacity: 0;
            visibility: hidden;
            transform: translateY(-6px);
            transition: all .25s ease-out;
            z-index: 30;
        }
        .search-input.open {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .search-input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(30, 93, 79, .15);
        }

        /* 汉堡 */
        .hamburger-btn {
            width: 2.5rem;
            height: 2.5rem;
            border-radius: .75rem;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-primary);
            transition: background .25s ease;
        }
        .hamburger-btn:hover {
            background: var(--primary-tint);
        }

        /* 移动端菜单 */
        .mobile-menu {
            position: fixed;
            inset: 0;
            background: var(--dark-section);
            background-image: linear-gradient(rgba(255, 255, 255, .04) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, .04) 1px, transparent 1px);
            background-size: 44px 44px;
            z-index: 40;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 2rem;
            opacity: 0;
            visibility: hidden;
            transition: all .35s ease-out;
        }
        .mobile-menu.open {
            opacity: 1;
            visibility: visible;
        }
        .mobile-menu .nav-link {
            color: #fff;
            font-size: 1.5rem;
            font-weight: 600;
            transition: color .25s ease;
        }
        .mobile-menu .nav-link:hover {
            color: var(--accent);
        }
        .mobile-menu .nav-link.active {
            color: var(--accent);
        }
        .mobile-menu .btn-primary {
            margin-top: .5rem;
        }
        body.menu-open {
            overflow: hidden;
        }

        /* 面包屑 */
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: .5rem;
            font-size: .875rem;
            color: var(--text-secondary);
        }
        .breadcrumb a {
            color: var(--primary);
            font-weight: 500;
            transition: color .25s;
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb .sep {
            color: var(--text-weak);
        }

        /* 徽章 */
        .badge {
            display: inline-flex;
            align-items: center;
            padding: .3rem .85rem;
            border-radius: 999px;
            font-size: .75rem;
            font-weight: 600;
            background: var(--primary-tint);
            color: var(--primary);
        }
        .badge-gold {
            background: rgba(201, 162, 39, .1);
            color: var(--gold-dark);
            border: 1px solid rgba(201, 162, 39, .3);
        }

        /* 卡片 */
        .card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 1.5rem;
            box-shadow: var(--shadow-card);
            transition: all .3s ease-out;
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        /* 文章标题区 */
        .article-title {
            font-size: 2rem;
            line-height: 1.25;
            font-weight: 800;
            letter-spacing: -.02em;
            color: var(--text-primary);
        }
        @media (min-width:768px) {
            .article-title {
                font-size: 2.25rem;
            }
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 1rem;
            color: var(--text-secondary);
            font-size: .875rem;
        }
        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: .375rem;
        }
        .meta-item svg {
            width: 1rem;
            height: 1rem;
            opacity: .7;
        }
        .cover-img {
            border-radius: 1rem;
            overflow: hidden;
            width: 100%;
            height: 260px;
            object-fit: cover;
            background: var(--primary-tint);
        }
        @media (min-width:768px) {
            .cover-img {
                height: 360px;
            }
        }

        /* 正文排版 */
        .article-body p {
            font-size: 1rem;
            line-height: 2;
            color: #333;
            margin-bottom: 1.5rem;
        }
        .article-body h2 {
            font-size: 1.5rem;
            font-weight: 700;
            margin: 2.5rem 0 1rem;
            color: var(--text-primary);
            letter-spacing: -.01em;
            line-height: 1.4;
        }
        .article-body h3 {
            font-size: 1.25rem;
            font-weight: 600;
            margin: 2rem 0 .75rem;
            color: var(--text-primary);
            line-height: 1.5;
        }
        .article-body h4 {
            font-size: 1.125rem;
            font-weight: 600;
            margin: 1.75rem 0 .5rem;
        }
        .article-body blockquote {
            border-left: 4px solid var(--gold);
            background: var(--bg);
            padding: 1.25rem 1.5rem;
            border-radius: 0 .75rem .75rem 0;
            color: #555;
            font-style: italic;
            margin: 2rem 0;
            line-height: 1.9;
        }
        .article-body ul,
        .article-body ol {
            margin: 0 0 1.5rem 1.25rem;
            padding: 0;
        }
        .article-body li {
            margin-bottom: .55rem;
            line-height: 1.9;
            color: #444;
        }
        .article-body ul {
            list-style: disc;
        }
        .article-body ul li::marker {
            color: var(--primary);
        }
        .article-body ol {
            list-style: decimal;
        }
        .article-body ol li::marker {
            color: var(--primary);
            font-weight: 600;
        }
        .article-body a {
            color: var(--primary);
            font-weight: 500;
            text-decoration: underline;
            text-decoration-color: rgba(201, 162, 39, .5);
            text-decoration-underline-offset: 4px;
            transition: color .25s ease;
        }
        .article-body a:hover {
            color: var(--accent);
            text-decoration-color: rgba(232, 106, 51, .4);
        }
        .article-body img {
            border-radius: .75rem;
            margin: 2rem auto;
            max-width: 100%;
        }
        .article-body .image-caption,
        .article-body figcaption {
            text-align: center;
            font-size: .875rem;
            color: var(--text-weak);
            margin: -1rem 0 2rem;
            line-height: 1.6;
        }
        .article-body code {
            background: var(--primary-tint);
            padding: .125rem .375rem;
            border-radius: .375rem;
            color: var(--primary);
            font-size: .875em;
            font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
        }
        .article-body pre {
            background: var(--dark-section);
            color: #F0F4F2;
            padding: 1.25rem;
            border-radius: .75rem;
            overflow-x: auto;
            margin: 2rem 0;
            font-size: .875rem;
            line-height: 1.7;
        }
        .article-body pre code {
            background: transparent;
            color: inherit;
            padding: 0;
        }
        .article-body strong {
            font-weight: 700;
            color: #1C1C1C;
        }

        /* 标签 */
        .tag {
            display: inline-flex;
            align-items: center;
            padding: .4rem .875rem;
            border-radius: 999px;
            background: var(--bg);
            border: 1px solid var(--border);
            font-size: .75rem;
            color: var(--text-secondary);
            transition: all .25s ease;
        }
        .tag:hover {
            background: var(--primary-tint);
            color: var(--primary);
            border-color: transparent;
        }

        /* 分享按钮 */
        .social-btn {
            width: 2.25rem;
            height: 2.25rem;
            border-radius: 999px;
            background: var(--bg);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            transition: all .25s ease;
        }
        .social-btn:hover {
            background: var(--primary-tint);
            color: var(--primary);
            transform: translateY(-2px);
        }

        /* 相关推荐卡片 */
        .related-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 1rem;
            box-shadow: var(--shadow-card);
            transition: all .3s ease-out;
            display: block;
        }
        .related-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .related-card .thumb {
            width: 100%;
            height: 9rem;
            object-fit: cover;
            border-radius: .75rem;
            margin-bottom: .85rem;
            background: var(--primary-tint);
        }

        /* 页脚 */
        .site-footer {
            background: var(--dark-section);
            color: #fff;
        }
        .site-footer .footer-top {
            border-top: 4px solid var(--gold);
        }
        .footer-title {
            font-weight: 600;
            margin-bottom: 1rem;
            font-size: .875rem;
            letter-spacing: .04em;
            color: #fff;
        }
        .footer-link {
            color: rgba(255, 255, 255, .7);
            font-size: .875rem;
            transition: color .25s ease;
        }
        .footer-link:hover {
            color: #fff;
        }
        .footer-social {
            width: 2rem;
            height: 2rem;
            background: rgba(255, 255, 255, .1);
            border-radius: 999px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, .6);
            transition: all .25s ease;
        }
        .footer-social:hover {
            background: rgba(255, 255, 255, .2);
            color: #fff;
            transform: translateY(-2px);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .1);
            color: rgba(255, 255, 255, .6);
            font-size: .75rem;
            padding: 1.5rem 0 2rem;
            margin-top: 1rem;
        }

        /* 内容未找到 */
        .not-found-icon {
            width: 5rem;
            height: 5rem;
            background: var(--primary-tint);
            border-radius: 999px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            margin: 0 auto;
        }

        /* 网格纹理 */
        .grid-texture {
            background-image: linear-gradient(rgba(255, 255, 255, .05) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, .05) 1px, transparent 1px);
            background-size: 44px 44px;
        }

        /* Toast 提示 */
        .toast {
            position: fixed;
            bottom: 2rem;
            left: 50%;
            transform: translateX(-50%) translateY(20px);
            background: var(--dark-section);
            color: #fff;
            padding: .75rem 1.5rem;
            border-radius: 999px;
            font-size: .875rem;
            box-shadow: var(--shadow-hover);
            opacity: 0;
            visibility: hidden;
            transition: all .3s ease-out;
            z-index: 100;
        }
        .toast.show {
            opacity: 1;
            visibility: visible;
            transform: translateX(-50%) translateY(0);
        }

        /* 响应式 */
        @media (max-width:640px) {
            .article-title {
                font-size: 1.5rem;
            }
            .breadcrumb {
                padding-top: 1.75rem;
            }
            .cover-img {
                height: 200px;
            }
            .article-body p {
                font-size: .9375rem;
                line-height: 1.9;
            }
            .related-card .thumb {
                height: 8rem;
            }
        }
        @media (min-width:641px) and (max-width:1024px) {
            .article-title {
                font-size: 1.875rem;
            }
        }

/* roulang page: category2 */
:root {
  --color-primary: #1E5D4F;
  --color-primary-dark: #163F36;
  --color-primary-tint: #E8F2EF;
  --color-accent: #E86A33;
  --color-accent-hover: #D15A24;
  --color-gold: #C9A227;
  --color-bg: #F7F5F2;
  --color-dark: #0F2E28;
  --color-text: #1C1C1C;
  --color-text-secondary: #64706B;
  --color-border: #E5E0D8;
  --radius-card: 16px;
  --shadow-card: 0 4px 20px rgba(15, 46, 40, 0.06);
  --shadow-hover: 0 8px 32px rgba(15, 46, 40, 0.12);
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding-left: 1rem;
  padding-right: 1rem;
}
@media (min-width: 768px) {
  .container { padding-left: 1.5rem; padding-right: 1.5rem; }
}
@media (min-width: 1024px) {
  .container { padding-left: 2rem; padding-right: 2rem; }
}
a {
  text-decoration: none;
  color: inherit;
  transition: color 0.3s ease;
}
img {
  display: block;
  max-width: 100%;
}
button {
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
}
input {
  font-family: inherit;
}
.nav-link {
  font-size: 14px;
  font-weight: 500;
  color: rgba(28, 28, 28, 0.8);
  transition: color 0.3s ease, font-weight 0.3s ease;
}
.nav-link:hover {
  color: var(--color-primary);
}
.nav-link.active {
  color: var(--color-primary);
  font-weight: 700;
}
.gold-line {
  width: 64px;
  height: 1px;
  background-color: var(--color-gold);
}
.grid-texture {
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.06) 1px, transparent 1px);
  background-size: 24px 24px;
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease-out;
}
.faq-item.active .faq-answer {
  max-height: 300px;
}
.faq-icon {
  display: inline-block;
  transition: transform 0.3s ease;
}
.faq-item.active .faq-icon {
  transform: rotate(45deg);
}
.footer-link {
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
  transition: color 0.3s ease;
}
.footer-link:hover {
  color: #ffffff;
}
.card-hover {
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}
.card-hover:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
@media (max-width: 640px) {
  .container { padding-left: 1rem; padding-right: 1rem; }
  .info-img { height: 220px !important; }
}