/* roulang page: index */
:root {
    --color-ink: #12100E;
    --color-paper: #F6F3ED;
    --color-accent: #FF5423;
    --color-highlight: #FACC15;
    --color-mud: #8A8178;
    --color-live: #21B573;
    --color-sand: #EDE8E0;
    --radius: 1rem;
    --shadow-card: 0 12px 30px -18px rgba(0,0,0,0.25);
  }
  * { box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body {
    font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
    background: #F6F3ED;
    color: #221F1B;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
  }
  .container-x { max-width: 1280px; margin-left: auto; margin-right: auto; padding-left: 1.25rem; padding-right: 1.25rem; }
  .noise-bg { background-image: radial-gradient(rgba(255,255,255,0.035) 1px, transparent 1px); background-size: 18px 18px; }
  .dot-wing {
    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: 42px 42px;
  }
  .scrollbar-hide::-webkit-scrollbar { display: none; }
  .scrollbar-hide { -ms-overflow-style: none; scrollbar-width: none; }
  .card-hover { transition: transform .35s ease, box-shadow .35s ease, border-color .35s ease; }
  .card-hover:hover { transform: translateY(-6px); box-shadow: 0 22px 40px -24px rgba(0,0,0,0.3); border-color: rgba(255,84,35,0.30) !important; }
  .btn-primary { transition: filter .2s, transform .15s; }
  .btn-primary:hover { filter: brightness(1.1); }
  .btn-primary:active { transform: scale(.95); }
  .btn-primary:focus-visible, .btn-outline:focus-visible, a:focus-visible, button:focus-visible { outline: 2px dashed var(--color-accent); outline-offset: 4px; }
  .nav-item { position: relative; display: inline-block; font-weight: 500; transition: color .25s ease, transform .2s ease; }
  .nav-item:hover { color: #FF5423; transform: translateY(-1px); }
  .nav-item.active::after { content: ''; position: absolute; left: 0; bottom: -10px; width: 100%; height: 3px; background: #FF5423; border-radius: 3px; }
  details.faq-item { transition: box-shadow .3s ease, border-color .3s ease; }
  details.faq-item[open] { border-left: 3px solid #FF5423; box-shadow: 0 18px 40px -28px rgba(0,0,0,0.28); }
  details.faq-item summary::-webkit-details-marker { display: none; }
  details.faq-item .faq-icon { transition: transform .3s ease; }
  details.faq-item[open] .faq-icon { transform: rotate(45deg); }
  .accordion-body { max-height: 0; overflow: hidden; transition: max-height .4s ease; }
  details.faq-item[open] .accordion-body { max-height: 400px; }
  .top-link { transition: background .25s ease, transform .2s ease, color .25s; }
  .top-link:hover { background: #FF5423; color: #12100E; transform: translateY(-3px); }
  .toTop { position: fixed; right: 1.5rem; bottom: 1.5rem; z-index: 60; width: 46px; height: 46px; border-radius: 50%; background: #12100E; color: #fff; display: flex; align-items: center; justify-content: center; box-shadow: 0 10px 24px -12px rgba(0,0,0,0.6); transition: background .25s, transform .2s; }
  .toTop:hover { background: #FF5423; color: #12100E; transform: translateY(-4px); }
  .toTop svg { width: 20px; height: 20px; }
  img { display: block; }
  @media (max-width: 640px) {
    .container-x { padding-left: 1rem; padding-right: 1rem; }
  }

/* roulang page: category1 */
:root {
            --color-ink: #12100E;
            --color-paper: #F6F3ED;
            --color-accent: #FF5423;
            --color-highlight: #FACC15;
            --color-mud: #8A8178;
            --color-live: #21B573;
            --color-sand: #EDE8E0;
            --radius: 1rem;
            --shadow-card: 0 12px 30px -18px rgba(0,0,0,0.25);
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
            background: #F6F3ED;
            color: #221F1B;
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
        }
        .container-x {
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }
        .card-hover {
            transition: transform .35s ease, box-shadow .35s ease, border-color .35s ease;
        }
        .card-hover:hover {
            transform: translateY(-6px);
            box-shadow: 0 22px 40px -24px rgba(0,0,0,0.3);
            border-color: rgba(255,84,35,0.30) !important;
        }
        .btn-primary {
            transition: filter .2s, transform .15s;
        }
        .btn-primary:hover {
            filter: brightness(1.1);
        }
        .btn-primary:active {
            transform: scale(.95);
        }
        .btn-primary:focus-visible, .btn-outline:focus-visible, a:focus-visible, button:focus-visible {
            outline: 2px dashed var(--color-accent);
            outline-offset: 4px;
        }
        .nav-item {
            position: relative;
            display: inline-block;
            font-weight: 500;
            transition: color .25s ease, transform .2s ease;
        }
        .nav-item:hover {
            color: #FF5423;
            transform: translateY(-1px);
        }
        .nav-item.active::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -10px;
            width: 100%;
            height: 3px;
            background: #FF5423;
            border-radius: 3px;
        }
        details.faq-item {
            transition: box-shadow .3s ease, border-color .3s ease;
        }
        details.faq-item[open] {
            border-left: 3px solid #FF5423;
            box-shadow: 0 18px 40px -28px rgba(0,0,0,0.28);
        }
        details.faq-item summary::-webkit-details-marker {
            display: none;
        }
        details.faq-item .faq-icon {
            transition: transform .3s ease;
        }
        details.faq-item[open] .faq-icon {
            transform: rotate(45deg);
        }
        .list-row-item {
            transition: background .25s ease, box-shadow .3s ease;
        }
        .list-row-item:hover {
            background: #fff;
            box-shadow: 0 10px 20px -14px rgba(0,0,0,0.08);
        }
        .pagination-number {
            transition: background .25s ease, color .25s ease, transform .2s ease;
        }
        .pagination-number:hover {
            background: #EDE8E0;
            transform: scale(1.02);
        }
        .pagination-number.active-page {
            background: #FF5423;
            color: #fff;
            border-color: #FF5423;
        }
        @media (max-width: 640px) {
            .container-x {
                padding-left: 1rem;
                padding-right: 1rem;
            }
        }
        .back-to-top-btn {
            transition: transform .3s ease, background .2s ease;
        }
        .back-to-top-btn:hover {
            transform: translateY(-5px);
        }
        .sidebar-card {
            border: 1px solid rgba(0,0,0,0.07);
            background: #fff;
            border-radius: var(--radius);
            padding: 1.5rem;
            box-shadow: var(--shadow-card);
        }
        .article-thumb:hover img {
            transform: scale(1.05);
        }
        .article-thumb img {
            transition: transform .5s ease;
        }
        body.dim-sidebar::after {
            content: '';
            position: fixed;
            inset: 0;
            background: #12100E90;
            z-index: 39;
            opacity: 0;
            pointer-events: none;
            transition: opacity .3s;
        }
        body.sidebar-open::after {
            opacity: 1;
        }
        .category-bg {
            background-image: url('/assets/images/backpic/back-4.jpg');
            background-size: cover;
            background-position: center;
        }