/* roulang page: index */
:root {
    --clr-primary: #0b1f3a;
    --clr-primary-light: #12263d;
    --clr-accent: #b9822f;
    --clr-accent-light: #cf9d48;
    --clr-bg: #f4f6fa;
    --clr-surface: #ffffff;
    --clr-text: #16202e;
    --clr-text-soft: #5c6b7f;
    --clr-border: #e5e9f0;
    --radius-md: 14px;
    --radius-lg: 22px;
    --shadow-md: 0 10px 30px rgba(11, 31, 58, 0.08);
    --shadow-lg: 0 20px 45px rgba(11, 31, 58, 0.14);
    --space-section: 96px;
  }

  * {
    box-sizing: border-box;
  }

  html {
    scroll-behavior: smooth;
  }

  body {
    margin: 0;
    background: var(--clr-bg);
    color: var(--clr-text);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
  }

  a {
    color: inherit;
    text-decoration: none;
    transition: color .2s ease, background-color .2s ease, box-shadow .2s ease, border-color .2s ease;
  }

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

  button,
  input,
  select,
  textarea {
    font-family: inherit;
    font-size: inherit;
    line-height: inherit;
  }

  .container-site {
    width: min(1200px, 100% - 48px);
    margin-inline: auto;
  }

  .section-space {
    padding-block: var(--space-section);
  }

  .section-title {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--clr-primary);
    line-height: 1.25;
  }

  .section-subtitle {
    font-size: 1.0625rem;
    color: var(--clr-text-soft);
    max-width: 640px;
    line-height: 1.7;
  }

  .site-header {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--clr-border);
  }

  .nav-link {
    position: relative;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--clr-text-soft);
    padding: 0.5rem 0.25rem;
    letter-spacing: 0.01em;
  }

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

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

  .nav-link.active::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 2px;
    border-radius: 2px;
    background: var(--clr-accent);
  }

  .btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background: var(--clr-primary);
    color: #fff;
    border: 1px solid transparent;
    border-radius: 999px;
    padding: 0.72rem 1.6rem;
    font-weight: 600;
    font-size: 0.9375rem;
    cursor: pointer;
    transition: all .25s ease;
    box-shadow: 0 8px 20px rgba(11, 31, 58, 0.14);
  }

  .btn-primary:hover {
    background: #16335c;
    box-shadow: 0 10px 26px rgba(11, 31, 58, 0.22);
    transform: translateY(-2px);
  }

  .btn-primary:focus-visible,
  .btn-outline:focus-visible,
  .nav-link:focus-visible,
  .footer-link:focus-visible {
    outline: 2px solid var(--clr-accent);
    outline-offset: 3px;
    border-radius: 4px;
  }

  .btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 4px 12px rgba(11, 31, 58, 0.18);
  }

  .btn-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background: transparent;
    color: var(--clr-primary);
    border: 1.5px solid rgba(11, 31, 58, 0.24);
    border-radius: 999px;
    padding: 0.64rem 1.5rem;
    font-weight: 600;
    font-size: 0.9375rem;
    cursor: pointer;
    transition: all .25s ease;
  }

  .btn-outline:hover {
    border-color: var(--clr-primary);
    background: rgba(11, 31, 58, 0.04);
    transform: translateY(-2px);
  }

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

  .btn-accent {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, #cf9d48, #b9822f);
    color: #fff;
    border: none;
    border-radius: 999px;
    padding: 0.72rem 1.6rem;
    font-weight: 600;
    font-size: 0.9375rem;
    cursor: pointer;
    transition: all .25s ease;
    box-shadow: 0 8px 20px rgba(185, 130, 47, 0.30);
  }

  .btn-accent:hover {
    box-shadow: 0 10px 28px rgba(185, 130, 47, 0.4);
    transform: translateY(-2px);
  }

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

  .card-base {
    background: var(--clr-surface);
    border: 1px solid var(--clr-border);
    border-radius: var(--radius-md);
    transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
  }

  .card-base:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(185, 130, 47, 0.35);
  }

  .badge-dot {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
  }

  .badge-dot::before {
    content: '';
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--clr-accent);
    box-shadow: 0 0 0 3px rgba(185, 130, 47, 0.2);
  }

  .input-search {
    background: #f0f2f6;
    border: 1px solid transparent;
    border-radius: 999px;
    padding: 0.5rem 1rem 0.5rem 2.4rem;
    font-size: 0.875rem;
    color: var(--clr-text);
    transition: all .25s ease;
  }

  .input-search:focus {
    outline: none;
    background: #fff;
    border-color: var(--clr-accent);
    box-shadow: 0 0 0 4px rgba(185, 130, 47, 0.12);
  }

  .faq-item {
    border: 1px solid var(--clr-border);
    border-radius: 16px;
    background: #fff;
    transition: border-color .25s ease, box-shadow .25s ease;
  }

  .faq-item:hover {
    border-color: rgba(185, 130, 47, 0.3);
    box-shadow: 0 6px 20px rgba(11, 31, 58, 0.06);
  }

  .faq-question {
    cursor: pointer;
    user-select: none;
  }

  .faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height .4s ease, padding .4s ease;
    padding: 0 1.5rem;
  }

  .faq-item.open .faq-answer {
    max-height: 300px;
    padding: 0 1.5rem 1.4rem;
  }

  .faq-icon {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 1.5px solid rgba(11, 31, 58, 0.18);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    transition: transform .3s ease, background-color .3s ease;
  }

  .faq-item.open .faq-icon {
    transform: rotate(45deg);
    background: var(--clr-primary);
    border-color: var(--clr-primary);
    color: #fff;
  }

  .footer-link {
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.65);
    transition: color .2s ease;
  }

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

  .hero-panel {
    background: rgba(255, 255, 255, 0.04);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 24px;
  }

  .stat-item {
    position: relative;
  }

  .stat-item+.stat-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 16%;
    bottom: 16%;
    width: 1px;
    background: rgba(255, 255, 255, 0.14);
  }

  .stat-number {
    font-size: clamp(1.5rem, 3vw, 2.1rem);
    font-weight: 800;
    letter-spacing: -0.02em;
  }

  @media (max-width: 768px) {
    :root {
      --space-section: 64px;
    }
    .stat-item+.stat-item::before {
      display: none;
    }
    .mobile-menu-open {
      display: block !important;
    }
  }

  @media (max-width: 520px) {
    .container-site {
      width: min(1200px, 100% - 32px);
    }
    .btn-primary,
    .btn-outline,
    .btn-accent {
      width: 100%;
    }
  }

  .step-line {
    position: relative;
  }

  .step-line:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 30px;
    left: calc(50% + 46px);
    width: calc(100% - 92px);
    height: 1px;
    background-image: linear-gradient(90deg, rgba(11, 31, 58, 0.2) 60%, transparent 60%);
    background-size: 12px 1px;
    background-repeat: repeat-x;
  }

  @media (max-width: 768px) {
    .step-line:not(:last-child)::after {
      display: none;
    }
  }

  .mobile-nav {
    display: none;
  }

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

  .news-card-img {
    overflow: hidden;
    border-radius: 16px 16px 0 0;
    position: relative;
  }

  .news-card-img img {
    transition: transform .5s ease;
    height: 180px;
    width: 100%;
    object-fit: cover;
  }

  .news-card-img:hover img {
    transform: scale(1.06);
  }

  .news-card-img::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 60%, rgba(11, 31, 58, 0.45));
    pointer-events: none;
  }

  .landing-banner {
    background-image: linear-gradient(rgba(11, 31, 58, 0.88), rgba(7, 21, 41, 0.82)), url('/assets/images/backpic/back-1.png');
    background-size: cover;
    background-position: center;
  }

  .feature-card-icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(185, 130, 47, 0.12);
    color: var(--clr-accent);
    font-size: 1.35rem;
  }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --brand-50: #eef9ff;
            --brand-100: #d8f1ff;
            --brand-500: #1a9fff;
            --brand-600: #0076cc;
            --ink-900: #0d1b2a;
            --ink-950: #081120;
            --text-main: #1e293b;
            --text-muted: #64748b;
            --border-light: #e2e8f0;
            --radius-md: 0.75rem;
            --radius-lg: 1rem;
            --radius-xl: 1.5rem;
            --shadow-card: 0 1px 3px rgba(0, 0, 0, .05), 0 10px 30px rgba(0, 0, 0, .06);
            --shadow-hover: 0 4px 12px rgba(0, 0, 0, .07), 0 20px 50px rgba(0, 0, 0, .12);
        }

        /* ===== 基础 Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            color: var(--text-main);
            background: #fff;
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        button {
            font-family: inherit;
            cursor: pointer;
        }
        input,
        textarea {
            font-family: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        :focus-visible {
            outline: 2px solid var(--brand-500);
            outline-offset: 3px;
            border-radius: 4px;
        }

        /* ===== 容器 ===== */
        .container-site {
            width: 100%;
            max-width: 80rem;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }
        @media (min-width: 640px) {
            .container-site {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }

        /* ===== 导航 ===== */
        .nav-link {
            position: relative;
            font-size: 0.925rem;
            font-weight: 500;
            color: var(--text-main);
            letter-spacing: .01em;
            padding: .35rem 0;
            transition: color .25s ease;
        }
        .nav-link::after {
            content: "";
            position: absolute;
            left: 50%;
            bottom: 0;
            width: 0;
            height: 2px;
            border-radius: 2px;
            background: var(--brand-500);
            transform: translateX(-50%);
            transition: width .3s ease;
        }
        .nav-link:hover {
            color: var(--brand-600);
        }
        .nav-link:hover::after,
        .nav-link.active::after {
            width: 100%;
        }
        .nav-link.active {
            color: var(--brand-600);
            font-weight: 600;
        }

        /* ===== 按钮 ===== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .5rem;
            background: var(--brand-500);
            color: #fff;
            font-weight: 600;
            font-size: .925rem;
            padding: .75rem 1.75rem;
            border-radius: 9999px;
            border: 1px solid transparent;
            box-shadow: 0 8px 24px rgba(26, 159, 255, .25);
            transition: all .25s ease;
        }
        .btn-primary:hover {
            background: var(--brand-600);
            box-shadow: 0 10px 32px rgba(0, 118, 204, .32);
            transform: translateY(-2px);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 4px 12px rgba(26, 159, 255, .2);
        }
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .5rem;
            background: transparent;
            color: #fff;
            font-weight: 500;
            font-size: .925rem;
            padding: .75rem 1.75rem;
            border-radius: 9999px;
            border: 1.5px solid rgba(255, 255, 255, .35);
            transition: all .25s ease;
        }
        .btn-ghost:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, .1);
        }

        /* ===== 标签/徽章 ===== */
        .tag-badge {
            display: inline-flex;
            align-items: center;
            gap: .4rem;
            font-size: .8rem;
            font-weight: 600;
            letter-spacing: .05em;
            color: #fff;
            background: rgba(255, 255, 255, .14);
            border: 1px solid rgba(255, 255, 255, .2);
            backdrop-filter: blur(6px);
            padding: .35rem 1rem;
            border-radius: 9999px;
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: .4rem;
            font-size: .78rem;
            font-weight: 700;
            letter-spacing: .08em;
            text-transform: uppercase;
            color: var(--brand-600);
            background: var(--brand-50);
            border: 1px solid var(--brand-100);
            padding: .3rem 1rem;
            border-radius: 9999px;
        }
        .card-badge {
            display: inline-flex;
            align-items: center;
            gap: .25rem;
            font-size: .72rem;
            font-weight: 600;
            color: var(--brand-600);
            background: rgba(26, 159, 255, .1);
            padding: .2rem .7rem;
            border-radius: 9999px;
        }

        /* ===== 卡片 ===== */
        .card-hover {
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-card);
            transition: box-shadow .3s ease, transform .3s ease;
        }
        .card-hover:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .step-card {
            position: relative;
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-xl);
            padding: 1.75rem 1.5rem 1.5rem;
            box-shadow: var(--shadow-card);
            transition: all .3s ease;
        }
        .step-card:hover {
            border-color: rgba(26, 159, 255, .3);
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 2.5rem;
            height: 2.5rem;
            border-radius: .8rem;
            background: var(--brand-50);
            color: var(--brand-600);
            font-weight: 700;
            font-size: .95rem;
            margin-bottom: 1.25rem;
        }
        .step-line {
            position: absolute;
            top: 2.5rem;
            right: -2rem;
            width: 2rem;
            height: 1px;
            background: var(--border-light);
        }
        @media (max-width: 1023px) {
            .step-line {
                display: none;
            }
        }

        .stat-card {
            border-radius: var(--radius-xl);
            background: rgba(255, 255, 255, .05);
            border: 1px solid rgba(255, 255, 255, .08);
            padding: 2rem 1.5rem;
            text-align: center;
            backdrop-filter: blur(4px);
            transition: all .3s ease;
        }
        .stat-card:hover {
            background: rgba(255, 255, 255, .09);
            border-color: rgba(255, 255, 255, .16);
        }

        .info-card {
            border-radius: var(--radius-xl);
            background: #fff;
            border: 1px solid var(--border-light);
            padding: 2rem 1.75rem;
            box-shadow: var(--shadow-card);
            transition: all .3s ease;
        }
        .info-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .info-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 3rem;
            height: 3rem;
            border-radius: 1rem;
            background: linear-gradient(135deg, var(--brand-50), var(--brand-100));
            color: var(--brand-600);
            font-size: 1.25rem;
            margin-bottom: 1.25rem;
        }

        /* ===== 内容卡片 ===== */
        .content-card {
            border-radius: var(--radius-xl);
            overflow: hidden;
            background: #fff;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            transition: all .3s ease;
            display: flex;
            flex-direction: column;
        }
        .content-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .content-card-img {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/10;
        }
        .content-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .content-card:hover .content-card-img img {
            transform: scale(1.04);
        }
        .content-card-body {
            padding: 1.5rem;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        /* ===== 图文列表 ===== */
        .feature-row {
            display: flex;
            gap: 1rem;
            padding: 1.25rem 1.5rem;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            background: #fff;
            transition: all .25s ease;
        }
        .feature-row:hover {
            border-color: rgba(26, 159, 255, .35);
            box-shadow: var(--shadow-card);
        }

        /* ===== FAQ ===== */
        .faq-item {
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            background: #fff;
            overflow: hidden;
            transition: border-color .25s ease, box-shadow .25s ease;
        }
        .faq-item:hover {
            border-color: rgba(26, 159, 255, .3);
            box-shadow: var(--shadow-card);
        }
        .faq-item summary {
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: 1.15rem 1.5rem;
            font-weight: 600;
            font-size: .95rem;
            color: var(--ink-900);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary .fa-chevron-down {
            font-size: .8rem;
            color: var(--text-muted);
            transition: transform .25s ease;
            flex-shrink: 0;
        }
        .faq-item[open] summary .fa-chevron-down {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 1.5rem 1.25rem;
            color: var(--text-muted);
            font-size: .9rem;
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-card {
            border-radius: 2rem;
            overflow: hidden;
            background: linear-gradient(135deg, #081120 0%, #0d1b2a 55%, #003d66 100%);
            padding: 3.5rem 2rem;
            text-align: center;
            position: relative;
        }
        .cta-card::before {
            content: "";
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: .2;
            mix-blend-mode: overlay;
        }
        .cta-content {
            position: relative;
            z-index: 2;
        }

        /* ===== 页脚 ===== */
        .footer-link {
            color: rgba(255, 255, 255, .5);
            font-size: .875rem;
            transition: color .2s ease, padding-left .2s ease;
        }
        .footer-link:hover {
            color: #fff;
            padding-left: 4px;
        }

        /* ===== 其他工具 ===== */
        .text-gradient {
            background: linear-gradient(120deg, #4ec2ff, #1a9fff);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .bg-hero-guide {
            position: relative;
            background:
                linear-gradient(115deg, rgba(8, 17, 32, .95) 30%, rgba(13, 27, 42, .72) 70%, rgba(0, 61, 102, .5)),
                url('/assets/images/backpic/back-1.png') center/cover no-repeat;
        }

        /* ===== 响应式断点补充 ===== */
        @media (max-width: 640px) {
            .section-gap {
                padding-top: 4rem;
                padding-bottom: 4rem;
            }
            .cta-card {
                padding: 2.5rem 1.25rem;
                border-radius: 1.5rem;
            }
        }

/* roulang page: article */
:root {
  --brand-500: #3391ff;
  --brand-600: #1b6ef5;
  --brand-700: #1457e1;
  --ink-900: #353a46;
  --ink-950: #171a21;
  --surface: #ffffff;
  --bg-soft: #f6f7f9;
  --border: #e5e9f0;
  --radius-lg: 1.25rem;
  --radius-md: 0.875rem;
  --shadow-sm: 0 2px 8px rgba(23,26,33,.06);
  --shadow-md: 0 8px 24px rgba(23,26,33,.08);
  --shadow-lg: 0 16px 40px rgba(23,26,33,.12);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  color: var(--ink-900);
  background: #ffffff;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
.container-site { max-width: 1280px; margin: 0 auto; padding-left: 1.5rem; padding-right: 1.5rem; width: 100%; }
.nav-link {
  position: relative;
  font-size: .95rem;
  font-weight: 500;
  color: #525e74;
  padding: .35rem 0;
  transition: color .2s ease;
  text-decoration: none;
}
.nav-link::after {
  content: '';
  position: absolute;
  left: 0; bottom: -2px;
  width: 0%; height: 2px;
  background: var(--brand-500);
  border-radius: 2px;
  transition: width .25s ease;
}
.nav-link:hover { color: var(--brand-600); }
.nav-link:hover::after { width: 100%; }
.nav-link.active { color: var(--brand-600); font-weight: 600; }
.nav-link.active::after { width: 100%; }
.mobile-nav-link {
  display: block;
  padding: .75rem 1rem;
  font-size: .95rem;
  font-weight: 500;
  color: #353a46;
  border-radius: .5rem;
  transition: background .2s ease;
  text-decoration: none;
}
.mobile-nav-link:hover { background: #eef7ff; color: var(--brand-600); }
.mobile-nav-link.active { background: #eef7ff; color: var(--brand-600); font-weight: 600; }
.footer-link { color: rgba(255,255,255,.5); transition: color .2s ease; text-decoration: none; }
.footer-link:hover { color: #ffffff; }
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  background: var(--brand-500);
  color: #ffffff;
  font-weight: 600;
  font-size: .95rem;
  padding: .85rem 1.75rem;
  border-radius: .75rem;
  transition: all .25s ease;
  border: none;
  cursor: pointer;
  text-decoration: none;
}
.btn-primary:hover { background: var(--brand-600); transform: translateY(-1px); box-shadow: 0 8px 20px rgba(27,110,245,.28); }
.btn-primary:active { transform: translateY(0); }
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  background: transparent;
  color: #353a46;
  font-weight: 600;
  font-size: .95rem;
  padding: .85rem 1.75rem;
  border-radius: .75rem;
  border: 1.5px solid #d5dae2;
  transition: all .25s ease;
  cursor: pointer;
  text-decoration: none;
}
.btn-outline:hover { border-color: var(--brand-500); color: var(--brand-600); background: #eef7ff; box-shadow: 0 4px 14px rgba(27,110,245,.1); }
.btn-outline:active { transform: translateY(0); }
.section-padding { padding: 5rem 0; }
@media (max-width: 768px) { .section-padding { padding: 3.5rem 0; } }
.card-hover { transition: transform .3s ease, box-shadow .3s ease; }
.card-hover:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.article-content { font-size: 1.05rem; line-height: 1.85; color: #3b4150; }
.article-content h2 { font-size: 1.55rem; font-weight: 700; color: #171a21; margin: 2.2rem 0 1rem; line-height: 1.4; }
.article-content h3 { font-size: 1.25rem; font-weight: 600; color: #171a21; margin: 1.8rem 0 .8rem; }
.article-content p { margin-bottom: 1.4rem; }
.article-content a { color: var(--brand-600); text-decoration: underline; text-underline-offset: 3px; }
.article-content a:hover { color: var(--brand-700); }
.article-content ul, .article-content ol { margin-bottom: 1.4rem; padding-left: 1.5rem; }
.article-content ul li { list-style: disc; margin-bottom: .5rem; }
.article-content ol li { list-style: decimal; margin-bottom: .5rem; }
.article-content img { border-radius: .75rem; max-width: 100%; height: auto; margin: 1.5rem 0; box-shadow: var(--shadow-md); }
.article-content blockquote {
  border-left: 4px solid var(--brand-500);
  background: #f6f9ff;
  padding: 1rem 1.5rem;
  margin: 1.5rem 0;
  border-radius: 0 .5rem .5rem 0;
  color: #525e74;
  font-style: normal;
}
.article-content blockquote p { margin-bottom: 0; }
.breadcrumb-item { font-size: .85rem; color: rgba(255,255,255,.65); text-decoration: none; transition: color .2s ease; }
.breadcrumb-item:hover { color: #ffffff; }
.breadcrumb-sep { font-size: .75rem; color: rgba(255,255,255,.4); margin: 0 .5rem; }
.badge-category {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  background: rgba(255,255,255,.15);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,.25);
  color: #ffffff;
  font-size: .8rem;
  font-weight: 500;
  padding: .35rem .85rem;
  border-radius: 999px;
  transition: background .2s ease;
}
.badge-category:hover { background: rgba(255,255,255,.28); }
.faq-item {
  border: 1px solid #e5e9f0;
  border-radius: .875rem;
  background: #ffffff;
  transition: box-shadow .25s ease;
}
.faq-item:hover { box-shadow: var(--shadow-sm); }
.faq-question { font-size: 1.05rem; font-weight: 600; color: #171a21; }
.faq-answer { color: #525e74; line-height: 1.7; }
.cta-bg {
  background: linear-gradient(135deg, #142857 0%, #1457e1 60%, #3391ff 100%);
  position: relative;
  overflow: hidden;
}
.cta-bg::before {
  content: '';
  position: absolute;
  top: -60%; right: -20%;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(51,145,255,.35) 0%, transparent 70%);
  pointer-events: none;
}
.cta-bg::after {
  content: '';
  position: absolute;
  bottom: -80%; left: -10%;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(255,255,255,.12) 0%, transparent 70%);
  pointer-events: none;
}
.sidebar-card {
  border: 1px solid #e5e9f0;
  border-radius: 1rem;
  background: #ffffff;
  padding: 1.5rem;
  transition: box-shadow .25s ease;
}
.sidebar-card:hover { box-shadow: var(--shadow-md); }
.sidebar-title {
  font-size: 1rem;
  font-weight: 700;
  color: #171a21;
  display: flex;
  align-items: center;
  gap: .5rem;
}
.sidebar-title::before {
  content: '';
  width: 4px; height: 18px;
  background: var(--brand-500);
  border-radius: 2px;
}
.sidebar-link {
  display: block;
  padding: .6rem 0;
  color: #525e74;
  font-size: .9rem;
  line-height: 1.5;
  text-decoration: none;
  border-bottom: 1px dashed #eceef2;
  transition: color .2s ease;
}
.sidebar-link:last-child { border-bottom: none; }
.sidebar-link:hover { color: var(--brand-600); }
.tag-chip {
  display: inline-flex;
  align-items: center;
  font-size: .78rem;
  font-weight: 500;
  color: #525e74;
  background: #f6f7f9;
  border: 1px solid #e5e9f0;
  padding: .3rem .7rem;
  border-radius: 999px;
  transition: all .2s ease;
  text-decoration: none;
}
.tag-chip:hover { background: #eef7ff; color: var(--brand-600); border-color: #bce2ff; }
.not-found-card {
  border: 1px solid #e5e9f0;
  border-radius: 1.5rem;
  background: #ffffff;
  padding: 5rem 2rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
}
.article-hero-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem; }
@media (max-width: 520px) { .article-hero-meta { gap: .6rem; } }