/* roulang page: index */
:root {
            --c-primary: #2E6BFF;
            --c-primary-hover: #2459E6;
            --c-primary-active: #1B45C7;
            --c-accent: #00D4FF;
            --c-success: #34D399;
            --c-warning: #FBBF24;
            --c-dark-bg: #050B1A;
            --c-dark-bg2: #0A1226;
            --c-dark-bg3: #0D1832;
            --c-text-main: #E6EDF7;
            --c-text-sub: #93A4BF;
            --c-text-muted: #6B7A95;
            --c-glass-bg: rgba(255, 255, 255, 0.04);
            --c-glass-border: rgba(255, 255, 255, 0.10);
            --c-primary-soft: rgba(46, 107, 255, 0.15);
            --shadow-glow-blue: 0 0 20px rgba(46, 107, 255, 0.45);
            --shadow-glow-cyan: 0 0 30px rgba(0, 212, 255, 0.55);
            --radius-card: 1rem;
            --radius-btn: 0.75rem;
            --radius-tag: 9999px;
            --radius-input: 0.5rem;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            background-color: var(--c-dark-bg);
            color: var(--c-text-main);
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

        button,
        input {
            font-family: inherit;
        }

        .container-site {
            max-width: 80rem;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }

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

        .glass-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.10);
            border-radius: 1rem;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.08);
            transition: border-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
        }

        .glass-card:hover {
            border-color: rgba(0, 212, 255, 0.40);
            transform: translateY(-4px);
            box-shadow: 0 24px 48px rgba(0, 0, 0, 0.25), inset 0 1px 0 rgba(255, 255, 255, 0.10);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background-color: var(--c-primary);
            color: #fff;
            font-weight: 600;
            border-radius: 0.75rem;
            padding: 0 1.5rem;
            height: 3rem;
            box-shadow: var(--shadow-glow-blue);
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
        }

        .btn-primary:hover {
            background-color: var(--c-primary-hover);
            box-shadow: var(--shadow-glow-cyan);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            background-color: var(--c-primary-active);
            transform: translateY(0);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.05);
            color: var(--c-text-main);
            font-weight: 500;
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 0.75rem;
            padding: 0 1.5rem;
            height: 3rem;
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .btn-outline:hover {
            border-color: rgba(0, 212, 255, 0.5);
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }

        .tag-pill {
            display: inline-flex;
            align-items: center;
            background: var(--c-primary-soft);
            color: var(--c-accent);
            font-size: 0.75rem;
            font-weight: 500;
            padding: 0.125rem 0.625rem;
            border-radius: 9999px;
            line-height: 1.5;
        }

        .input-glass {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.10);
            border-radius: 0.5rem;
            padding: 0 1rem;
            height: 3rem;
            color: var(--c-text-main);
            width: 100%;
            outline: none;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }

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

        .input-glass:focus {
            border-color: var(--c-primary);
            box-shadow: 0 0 0 3px rgba(46, 107, 255, 0.25);
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: -0.02em;
            margin-bottom: 1.5rem;
        }

        @media (min-width: 768px) {
            .section-title {
                font-size: 2.25rem;
            }
        }

        .title-gradient {
            background: linear-gradient(135deg, #2E6BFF 0%, #00D4FF 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: 0 0 30px rgba(0, 212, 255, 0.25);
        }

        .nav-link {
            position: relative;
            color: var(--c-text-sub);
            font-size: 0.875rem;
            font-weight: 400;
            padding: 0.25rem 0.25rem;
            transition: color 0.3s ease;
        }

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

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

        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -4px;
            height: 2px;
            background: var(--c-primary);
            border-radius: 2px;
        }

        .stat-number {
            font-feature-settings: "tnum";
            font-variant-numeric: tabular-nums;
        }

        /* FAQ 手风琴 */
        .faq-item {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.10);
            border-radius: 0.75rem;
            overflow: hidden;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }

        .faq-item.open {
            border-color: rgba(46, 107, 255, 0.5);
            box-shadow: 0 0 20px rgba(46, 107, 255, 0.15);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1.25rem 1.5rem;
            cursor: pointer;
            font-weight: 500;
            color: var(--c-text-main);
            font-size: 0.9375rem;
            transition: color 0.3s ease;
        }

        .faq-question .arrow {
            flex-shrink: 0;
            width: 1.25rem;
            height: 1.25rem;
            color: var(--c-text-muted);
            transition: transform 0.3s ease, color 0.3s ease;
        }

        .faq-item.open .arrow {
            transform: rotate(90deg);
            color: var(--c-accent);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }

        .faq-answer-inner {
            padding: 0 1.5rem 1.25rem;
            color: var(--c-text-sub);
            font-size: 0.875rem;
            line-height: 1.75;
        }

        .faq-item.open .faq-answer {
            max-height: 500px;
        }

        /* 图墙 */
        .gallery-item {
            border-radius: 1rem;
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.10);
            transition: all 0.4s ease;
            position: relative;
        }

        .gallery-item img {
            transition: transform 0.5s ease;
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .gallery-item:hover {
            border-color: rgba(0, 212, 255, 0.4);
            transform: scale(1.02);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
        }

        .gallery-item:hover img {
            transform: scale(1.05);
        }

        /* 背景光晕 */
        .glow-orb {
            position: absolute;
            border-radius: 50%;
            filter: blur(80px);
            opacity: 0.25;
            pointer-events: none;
        }

        /* 滚动条 */
        ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }

        ::-webkit-scrollbar-track {
            background: #070D1C;
        }

        ::-webkit-scrollbar-thumb {
            background: #1e2a44;
            border-radius: 8px;
        }

        ::-webkit-scrollbar-thumb:hover {
            background: #2c3d5f;
        }

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

        /* 移动端导航抽屉 */
        .mobile-menu {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }

        .mobile-menu.open {
            max-height: 320px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.10);
        }

        /* 倒计时条 */
        .countdown-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            padding: 0.5rem 0.75rem;
            min-width: 4.5rem;
            border-radius: 0.75rem;
            background: rgba(0, 0, 0, 0.25);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        .countdown-num {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--c-primary);
            font-feature-settings: "tnum";
            font-variant-numeric: tabular-nums;
            line-height: 1.2;
        }

        .countdown-label {
            font-size: 0.75rem;
            color: var(--c-text-muted);
            margin-top: 0.25rem;
        }

        /* 内容列表项 */
        .post-item {
            transition: all 0.3s ease;
        }

        .post-item:hover {
            border-color: rgba(0, 212, 255, 0.35) !important;
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.25);
        }

/* roulang page: article */
:root {
  --bg-dark: #050B1A;
  --bg-block: #0A1226;
  --bg-block-2: #0D1832;
  --primary: #2E6BFF;
  --primary-hover: #2459E6;
  --accent: #00D4FF;
  --success: #34D399;
  --warning: #FBBF24;
  --text-main: #E6EDF7;
  --text-sub: #93A4BF;
  --text-muted: #6B7A95;
  --border-light: rgba(255,255,255,0.10);
  --card-bg: rgba(255,255,255,0.04);
  --radius-card: 1rem;
  --radius-btn: 0.5rem;
  --radius-tag: 9999px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  background-color: #050B1A;
  color: #E6EDF7;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

input,
textarea {
  font-family: inherit;
}

ul,
ol {
  list-style: none;
}

.container-site {
  max-width: 80rem;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1rem;
  padding-right: 1rem;
}

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

/* 导航链接 */
.nav-link {
  position: relative;
  font-size: 0.875rem;
  color: #93A4BF;
  transition: color 0.3s ease;
  padding-bottom: 4px;
  line-height: 1.4;
}

.nav-link:hover {
  color: #ffffff;
}

.nav-link.active {
  color: #2E6BFF;
  font-weight: 500;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  background: #2E6BFF;
  border-radius: 2px;
  box-shadow: 0 0 8px rgba(46, 107, 255, 0.6);
}

/* 标签 */
.tag-pill {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.6rem;
  font-size: 0.75rem;
  border-radius: 9999px;
  background: rgba(46, 107, 255, 0.15);
  color: #00D4FF;
  white-space: nowrap;
}

/* 玻璃卡片 */
.glass-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.10);
  border-radius: 1rem;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
  transition: all 0.3s ease;
}

.glass-card:hover {
  border-color: rgba(0, 212, 255, 0.4);
  transform: translateY(-4px);
}

/* 按钮 */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  height: 2.75rem;
  padding: 0 1.5rem;
  border-radius: 0.5rem;
  background: #2E6BFF;
  color: #ffffff;
  font-weight: 600;
  font-size: 0.9375rem;
  box-shadow: 0 0 20px rgba(46, 107, 255, 0.45);
  transition: all 0.3s ease;
  border: none;
  line-height: 1;
}

.btn-primary:hover {
  background: #2459E6;
  box-shadow: 0 0 30px rgba(0, 212, 255, 0.55);
  transform: translateY(-1px);
}

.btn-primary:active {
  background: #1B45C7;
  transform: translateY(0);
}

.btn-primary:focus-visible {
  outline: 2px solid #00D4FF;
  outline-offset: 2px;
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  height: 2.75rem;
  padding: 0 1.5rem;
  border-radius: 0.5rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #E6EDF7;
  font-weight: 500;
  font-size: 0.9375rem;
  transition: all 0.3s ease;
  line-height: 1;
}

.btn-ghost:hover {
  border-color: rgba(0, 212, 255, 0.5);
  color: #ffffff;
  background: rgba(255, 255, 255, 0.06);
}

.btn-ghost:active {
  transform: translateY(0);
}

.btn-ghost:focus-visible {
  outline: 2px solid #00D4FF;
  outline-offset: 2px;
}

/* 文章正文排版 */
.article-body {
  font-size: 1rem;
  line-height: 1.75;
  color: #E6EDF7;
  word-break: break-word;
}

.article-body h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  line-height: 1.3;
  padding-left: 0.75rem;
  border-left: 3px solid #2E6BFF;
}

.article-body h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-top: 1.75rem;
  margin-bottom: 0.75rem;
  line-height: 1.4;
}

.article-body p {
  margin-bottom: 1.25rem;
}

.article-body a {
  color: #00D4FF;
  border-bottom: 1px solid rgba(0, 212, 255, 0.3);
  transition: color 0.2s ease;
}

.article-body a:hover {
  color: #ffffff;
}

.article-body blockquote {
  border-left: 3px solid #2E6BFF;
  background: rgba(255, 255, 255, 0.03);
  padding: 1rem 1.25rem;
  border-radius: 0 0.75rem 0.75rem 0;
  margin: 1.5rem 0;
  color: #93A4BF;
  font-style: normal;
}

.article-body img {
  border-radius: 1rem;
  margin: 2rem auto;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.article-body ul,
.article-body ol {
  margin: 1rem 0 1.25rem;
  padding-left: 1.5rem;
}

.article-body ul {
  list-style: disc;
}

.article-body ol {
  list-style: decimal;
}

.article-body li {
  margin-bottom: 0.5rem;
  color: #C7D2E4;
}

.article-body code {
  background: rgba(255, 255, 255, 0.1);
  padding: 0.15rem 0.4rem;
  border-radius: 0.25rem;
  font-size: 0.9em;
  color: #00D4FF;
}

.article-body pre {
  background: #0A1226;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 0.75rem;
  padding: 1.25rem;
  overflow-x: auto;
  margin: 1.5rem 0;
}

.article-body pre code {
  background: transparent;
  padding: 0;
  color: #E6EDF7;
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
}

.article-body th,
.article-body td {
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 0.75rem 1rem;
  text-align: left;
}

.article-body th {
  background: rgba(46, 107, 255, 0.1);
  color: #ffffff;
  font-weight: 600;
}

/* FAQ */
.faq-item {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.10);
  border-radius: 0.75rem;
  transition: all 0.3s ease;
  overflow: hidden;
}

.faq-item.open {
  border-color: rgba(46, 107, 255, 0.5);
  background: rgba(46, 107, 255, 0.05);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 1rem 1.25rem;
  background: transparent;
  border: none;
  color: #E6EDF7;
  font-size: 0.9375rem;
  font-weight: 500;
  text-align: left;
  transition: color 0.3s ease;
}

.faq-question:hover {
  color: #00D4FF;
}

.faq-arrow {
  flex-shrink: 0;
  margin-left: 1rem;
  color: #6B7A95;
  transition: transform 0.3s ease, color 0.3s ease;
}

.faq-item.open .faq-arrow {
  transform: rotate(90deg);
  color: #00D4FF;
}

.faq-answer {
  display: none;
  padding: 0 1.25rem 1rem;
  color: #93A4BF;
  font-size: 0.875rem;
  line-height: 1.75;
}

.faq-item.open .faq-answer {
  display: block;
  animation: fadeInUp 0.3s ease;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 移动端菜单 */
.mobile-menu {
  display: none;
  position: fixed;
  inset: 4rem 0 auto 0;
  background: rgba(5, 11, 26, 0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.10);
  padding: 1rem 1rem 1.5rem;
  z-index: 40;
}

.mobile-menu.open {
  display: block;
}

.mobile-menu a {
  display: block;
  padding: 0.75rem 0.5rem;
  font-size: 1rem;
  color: #93A4BF;
  border-radius: 0.5rem;
  transition: all 0.2s ease;
}

.mobile-menu a:hover {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.05);
}

.mobile-menu a.active {
  color: #2E6BFF;
  background: rgba(46, 107, 255, 0.1);
}

/* 数字等宽 */
.tabular-nums {
  font-feature-settings: "tnum";
  font-variant-numeric: tabular-nums;
}

/* 输入框 */
.input-glass {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.10);
  border-radius: 0.5rem;
  height: 2.75rem;
  padding: 0 1rem;
  color: #E6EDF7;
  font-size: 0.9375rem;
  width: 100%;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.input-glass::placeholder {
  color: #6B7A95;
}

.input-glass:focus {
  outline: none;
  border-color: #2E6BFF;
  box-shadow: 0 0 0 3px rgba(46, 107, 255, 0.2);
}

/* 区块标题装饰 */
.section-title {
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 1.5rem;
  letter-spacing: -0.01em;
}

@media (min-width: 768px) {
  .section-title {
    font-size: 2rem;
  }
}

/* 面包屑 */
.crumb-link {
  color: #6B7A95;
  font-size: 0.8125rem;
  transition: color 0.2s ease;
}

.crumb-link:hover {
  color: #00D4FF;
}

.crumb-current {
  color: #93A4BF;
  font-size: 0.8125rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 14rem;
}

@media (min-width: 768px) {
  .crumb-current {
    max-width: 24rem;
  }
}

/* Hero 区块光晕 */
.hero-glow {
  position: absolute;
  border-radius: 50%;
  background: rgba(46, 107, 255, 0.12);
  filter: blur(80px);
  pointer-events: none;
}

/* 卡片标题限制 */
.card-title-line {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-desc-line {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 阅读进度条 */
.reading-progress {
  height: 3px;
  background: linear-gradient(90deg, #2E6BFF, #00D4FF);
  border-radius: 3px;
}

/* 分段链接 */
.section-anchor {
  scroll-margin-top: 5rem;
}

/* roulang page: category1 */
:root {
            --bg-dark: #050B1A;
            --bg-alt: #0A1226;
            --bg-card: rgba(255, 255, 255, 0.04);
            --border-light: rgba(255, 255, 255, 0.10);
            --primary: #2E6BFF;
            --primary-hover: #2459E6;
            --primary-active: #1B45C7;
            --accent: #00D4FF;
            --success: #34D399;
            --warning: #FBBF24;
            --text-main: #E6EDF7;
            --text-sub: #93A4BF;
            --text-muted: #6B7A95;
            --radius-card: 1rem;
            --radius-btn: 0.75rem;
            --shadow-glow: 0 0 20px rgba(46, 107, 255, 0.45);
            --shadow-glow-accent: 0 0 30px rgba(0, 212, 255, 0.55);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            background-color: var(--bg-dark);
            color: var(--text-main);
            line-height: 1.75;
            font-feature-settings: "tnum";
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }

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

        input,
        select {
            font-family: inherit;
            outline: none;
        }

        .container-site {
            max-width: 80rem;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }

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

        /* 导航链接 */
        .nav-link {
            position: relative;
            font-size: 0.875rem;
            color: var(--text-sub);
            padding: 0.25rem 0;
            transition: color 0.25s ease;
            letter-spacing: 0.01em;
        }

        .nav-link:hover {
            color: #ffffff;
        }

        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            box-shadow: 0 0 8px rgba(46, 107, 255, 0.6);
        }

        @media (max-width: 767px) {
            .mobile-nav-link {
                display: block;
                padding: 0.625rem 0.75rem;
                border-radius: 0.5rem;
                font-size: 0.875rem;
                color: var(--text-sub);
                transition: all 0.2s ease;
            }
            .mobile-nav-link:hover {
                color: #fff;
                background: rgba(255, 255, 255, 0.06);
            }
            .mobile-nav-link.active {
                color: var(--accent);
                font-weight: 600;
                background: rgba(0, 212, 255, 0.08);
            }
        }

        /* 按钮 */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            border-radius: var(--radius-btn);
            box-shadow: var(--shadow-glow);
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .btn-primary:hover {
            background: var(--primary-hover);
            box-shadow: var(--shadow-glow-accent);
            transform: translateY(-2px);
        }

        .btn-primary:active {
            background: var(--primary-active);
            transform: translateY(0);
            box-shadow: 0 0 15px rgba(0, 212, 255, 0.4);
        }

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

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.18);
            color: #fff;
            font-weight: 500;
            border-radius: var(--radius-btn);
            backdrop-filter: blur(10px);
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(0, 212, 255, 0.5);
            transform: translateY(-2px);
        }

        .btn-ghost:active {
            transform: translateY(0);
        }

        .btn-lg {
            height: 3rem;
            padding: 0 1.75rem;
            font-size: 1rem;
        }

        .btn-sm {
            height: 2.25rem;
            padding: 0 1rem;
            font-size: 0.875rem;
        }

        /* 标签 */
        .tag-pill {
            display: inline-flex;
            align-items: center;
            padding: 0.25rem 0.875rem;
            border-radius: 9999px;
            font-size: 0.75rem;
            font-weight: 500;
            background: rgba(46, 107, 255, 0.15);
            color: var(--accent);
            border: 1px solid rgba(0, 212, 255, 0.25);
            line-height: 1.5;
        }

        /* 玻璃卡片 */
        .glass-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.10);
            border-radius: var(--radius-card);
            backdrop-filter: blur(20px);
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.08);
            transition: border-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
        }

        .glass-card:hover {
            border-color: rgba(0, 212, 255, 0.35);
            transform: translateY(-4px);
            box-shadow: 0 16px 48px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.10);
        }

        /* 特征卡片 */
        .feature-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.10);
            border-radius: 1.25rem;
            backdrop-filter: blur(12px);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25), inset 0 1px 0 rgba(255, 255, 255, 0.06);
            transition: all 0.3s ease;
        }

        .feature-card:hover {
            border-color: rgba(0, 212, 255, 0.40);
            transform: translateY(-4px);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3), 0 0 30px rgba(46, 107, 255, 0.12);
        }

        .feature-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 3rem;
            height: 3rem;
            border-radius: 0.875rem;
            background: rgba(46, 107, 255, 0.15);
            border: 1px solid rgba(0, 212, 255, 0.25);
            color: var(--accent);
            margin-bottom: 1rem;
        }

        /* 步骤卡片 */
        .step-card {
            position: relative;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.10);
            border-radius: 1.25rem;
            padding: 1.75rem 1.5rem;
            backdrop-filter: blur(12px);
            transition: all 0.3s ease;
        }

        .step-card:hover {
            border-color: rgba(0, 212, 255, 0.40);
            transform: translateY(-4px);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.3);
        }

        .step-number {
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--accent);
            background: rgba(0, 212, 255, 0.12);
            border: 1px solid rgba(0, 212, 255, 0.25);
            border-radius: 9999px;
            padding: 0.125rem 0.75rem;
            display: inline-block;
            margin-bottom: 0.75rem;
            letter-spacing: 0.08em;
        }

        /* 表单 */
        .form-input {
            width: 100%;
            height: 3rem;
            padding: 0 1rem;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.10);
            border-radius: 0.625rem;
            color: var(--text-main);
            font-size: 0.875rem;
            transition: all 0.25s ease;
        }

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

        .form-input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(46, 107, 255, 0.2);
            background: rgba(255, 255, 255, 0.07);
        }

        /* FAQ */
        .faq-item {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.10);
            border-radius: 0.875rem;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }

        .faq-item.active {
            border-color: rgba(46, 107, 255, 0.5);
            box-shadow: 0 0 20px rgba(46, 107, 255, 0.10);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: 1.25rem 1.5rem;
            text-align: left;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-main);
            transition: color 0.2s ease;
        }

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

        .faq-icon {
            flex-shrink: 0;
            width: 1.25rem;
            height: 1.25rem;
            color: var(--text-muted);
            transition: transform 0.35s ease, color 0.3s ease;
        }

        .faq-item.active .faq-icon {
            transform: rotate(90deg);
            color: var(--accent);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }

        .faq-answer-inner {
            padding: 0 1.5rem 1.25rem;
            font-size: 0.875rem;
            color: var(--text-sub);
            line-height: 1.85;
        }

        /* 图墙 */
        .wall-item {
            position: relative;
            border-radius: 1.25rem;
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.10);
            aspect-ratio: 4 / 3;
            background: var(--darkcard);
            transition: all 0.35s ease;
        }

        .wall-item.square {
            aspect-ratio: 1 / 1;
        }

        .wall-item img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .wall-item:hover {
            border-color: rgba(0, 212, 255, 0.5);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
        }

        .wall-item:hover img {
            transform: scale(1.06);
        }

        /* 场景卡片 */
        .scene-card {
            position: relative;
            border-radius: 1.25rem;
            padding: 1.75rem;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.08);
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .scene-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .scene-card:hover {
            border-color: rgba(0, 212, 255, 0.3);
            transform: translateY(-4px);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.25);
        }

        .scene-card:hover::before {
            opacity: 1;
        }

        .scene-index {
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--accent);
            letter-spacing: 0.1em;
            margin-bottom: 0.5rem;
            display: block;
        }

        /* 区块标题强调 */
        .title-accent {
            background: linear-gradient(90deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        /* 分区背景 */
        .section-bg-radial {
            background: radial-gradient(circle at 50% 0%, rgba(46, 107, 255, 0.10), transparent 60%);
        }

        /* 焦点可见性 */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        /* 响应式辅助 */
        @media (max-width: 640px) {
            .nav-mobile-drawer {
                max-height: calc(100vh - 4rem);
                overflow-y: auto;
            }
        }

        /* 动画 */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .animate-fade-up {
            animation: fadeInUp 0.6s ease forwards;
        }