/* roulang page: index */
:root {
  --primary: #0E3B2E;
  --primary-hover: #14634B;
  --accent: #C9A35F;
  --accent-hover: #D4B578;
  --bg-base: #F7F5F1;
  --bg-alt: #EFEBE3;
  --bg-dark: #0B2A22;
  --text-main: #1F2A26;
  --text-muted: #5A6B64;
  --border-color: #E2DCD2;
  --card-bg: #FFFFFF;
  --success: #2D7A5B;
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-small: 6px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.04);
  --shadow-lg: 0 16px 40px -12px rgba(0,0,0,0.15);
}
* { 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: var(--bg-base);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration:none; transition: all 0.2s ease-out; }
img { max-width:100%; height:auto; display:block; }
button { cursor:pointer; font-family:inherit; }
input, textarea, select { font-family:inherit; outline:none; }
.container-page { max-width:1280px; margin:0 auto; padding:0 32px; }
@media (max-width:768px) { .container-page { padding:0 16px; } }
.section-pad { padding:96px 0; }
@media (max-width:768px) { .section-pad { padding:56px 0; } }
.btn-primary {
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  background: var(--primary); color:#fff; font-weight:600;
  border-radius: var(--radius-btn); padding:14px 28px;
  border: none; transition: all 0.2s ease-out;
}
.btn-primary:hover { background: var(--accent); transform: translateY(-1px); box-shadow: var(--shadow-lg); }
.btn-primary:active { transform: translateY(1px); }
.btn-primary:focus-visible { outline:2px solid var(--accent); outline-offset:2px; }
.btn-outline {
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  background: transparent; color: var(--primary); font-weight:600;
  border:1px solid var(--primary); border-radius: var(--radius-btn); padding:13px 26px;
  transition: all 0.2s ease-out;
}
.btn-outline:hover { background: var(--primary); color:#fff; transform: translateY(-1px); }
.btn-outline:active { transform: translateY(1px); }
.btn-outline:focus-visible { outline:2px solid var(--accent); outline-offset:2px; }
.btn-text { display:inline-flex; align-items:center; gap:6px; color: var(--primary); font-weight:600; transition: all 0.2s ease-out; }
.btn-text:hover { gap:12px; }
.section-label {
  display:inline-flex; align-items:center; gap:8px;
  font-size:13px; font-weight:600; letter-spacing:0.05em;
  color: var(--accent); text-transform: uppercase;
  background: rgba(201,163,95,0.1); border:1px solid rgba(201,163,95,0.3);
  padding:6px 16px; border-radius:9999px;
}
.card-hover { transition: all 0.25s ease-out; }
.card-hover:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.input-field {
  width:100%; padding:12px 16px; border:1px solid var(--border-color);
  border-radius: var(--radius-btn); background:#fff; color:var(--text-main);
  font-size:14px; transition: border-color 0.2s, box-shadow 0.2s;
}
.input-field:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(14,59,46,0.1); }
.input-field::placeholder { color:#9ca8a2; }
.faq-item { border:1px solid var(--border-color); border-radius: var(--radius-card); background:#fff; overflow:hidden; transition: border-color 0.2s; }
.faq-item.active { border-color: var(--accent); }
.faq-btn { width:100%; display:flex; justify-content:space-between; align-items:center; padding:20px 24px; background:none; border:none; text-align:left; font-size:16px; font-weight:600; color:var(--text-main); transition: color 0.2s; }
.faq-btn:hover { color: var(--primary); }
.faq-icon { flex-shrink:0; width:20px; height:20px; position:relative; transition: transform 0.3s; }
.faq-icon::before,.faq-icon::after { content:''; position:absolute; background:var(--accent); border-radius:2px; transition: all 0.3s; }
.faq-icon::before { width:14px; height:2px; top:9px; left:3px; }
.faq-icon::after { width:2px; height:14px; top:3px; left:9px; }
.faq-item.active .faq-icon { transform: rotate(45deg); }
.faq-answer { max-height:0; overflow:hidden; transition: max-height 0.35s ease-out; }
.faq-answer-inner { padding:0 24px 20px; color:var(--text-muted); font-size:15px; line-height:1.8; }
.nav-link { position:relative; padding:8px 4px; font-size:15px; font-weight:500; color:var(--text-main); white-space:nowrap; }
.nav-link:hover { color: var(--primary); }
.nav-link.active { color: var(--primary); font-weight:600; }
.nav-link.active::after { content:''; position:absolute; left:0; right:0; bottom:-2px; height:2px; background:var(--accent); border-radius:2px; }
.stat-number { font-size:56px; font-weight:900; color:var(--accent); line-height:1; letter-spacing:-0.02em; }
@media (max-width:768px) { .stat-number { font-size:40px; } }
.hero-bg {
  background-image: linear-gradient(105deg, rgba(11,42,34,0.92) 0%, rgba(14,59,46,0.82) 50%, rgba(11,42,34,0.68) 100%), url('/assets/images/backpic/back-1.png');
  background-size:cover; background-position:center;
}
.modal-mask { position:fixed; inset:0; z-index:1000; background:rgba(0,0,0,0.6); backdrop-filter:blur(4px); display:none; align-items:center; justify-content:center; padding:20px; }
.modal-mask.open { display:flex; }
.modal-panel { background:#fff; border-radius:16px; max-width:480px; width:100%; box-shadow:0 25px 60px -12px rgba(0,0,0,0.3); transform:scale(0.96); opacity:0; transition:all 0.25s ease-out; max-height:90vh; overflow-y:auto; }
.modal-mask.open .modal-panel { transform:scale(1); opacity:1; }
.search-mask { position:fixed; inset:0; z-index:1200; background:rgba(0,0,0,0.5); backdrop-filter:blur(4px); display:none; padding-top:8vh; }
.search-mask.open { display:block; }
.search-panel { max-width:680px; margin:0 auto; background:#fff; border-radius:16px; box-shadow:0 25px 60px -12px rgba(0,0,0,0.3); overflow:hidden; transform:scale(0.98); opacity:0; transition:all 0.2s ease-out; }
.search-mask.open .search-panel { transform:scale(1); opacity:1; }
.mobile-menu { position:fixed; inset:0; z-index:900; background:var(--bg-dark); display:none; padding:80px 24px 40px; flex-direction:column; }
.mobile-menu.open { display:flex; }
.mobile-menu a { color:#fff; font-size:22px; font-weight:700; padding:14px 0; border-bottom:1px solid rgba(255,255,255,0.08); }
@keyframes fadeUp { from { opacity:0; transform:translateY(20px); } to { opacity:1; transform:translateY(0); } }
.fade-up { animation: fadeUp 0.7s ease-out forwards; opacity:0; }
.fade-up.done { opacity:1; }
.hover-img img { transition: transform 0.5s ease-out; }
.hover-img:hover img { transform: scale(1.04); }
::-webkit-scrollbar { width:8px; }
::-webkit-scrollbar-track { background: var(--bg-base); }
::-webkit-scrollbar-thumb { background: #c9d2cd; border-radius:4px; }
::-webkit-scrollbar-thumb:hover { background: #a9b6af; }

/* roulang page: category1 */
:root {
            --primary: #0E3B2E;
            --primary-hover: #14634B;
            --accent: #C9A35F;
            --accent-hover: #D4B578;
            --base-bg: #F7F5F1;
            --alt-bg: #EFEBE3;
            --dark-bg: #0B2A22;
            --body-text: #1F2A26;
            --muted-text: #5A6B64;
            --border-line: #E2DCD2;
            --card-bg: #FFFFFF;
            --data-green: #2D7A5B;
        }
        * {
            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(--base-bg);
            color: var(--body-text);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color .2s ease-out;
        }
        button {
            cursor: pointer;
            font-family: inherit;
        }
        input,
        textarea {
            font-family: inherit;
        }
        .container-page {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }
        .nav-link {
            font-size: .875rem;
            font-weight: 500;
            color: var(--body-text);
            position: relative;
            padding: .25rem 0;
            transition: color .2s ease-out;
        }
        .nav-link:hover {
            color: var(--accent);
        }
        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 0;
            width: 100%;
            height: 2px;
            background-color: var(--accent);
            border-radius: 2px;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .5rem;
            background-color: var(--primary);
            color: #fff;
            border: 2px solid var(--primary);
            border-radius: 8px;
            padding: .75rem 1.75rem;
            font-size: .9375rem;
            font-weight: 600;
            transition: all .2s ease-out;
            cursor: pointer;
        }
        .btn-primary:hover {
            background-color: var(--accent);
            border-color: var(--accent);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 8px 24px -8px rgba(201, 163, 95, .5);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-primary:focus-visible,
        .btn-outline:focus-visible,
        .nav-link:focus-visible {
            outline: none;
            box-shadow: 0 0 0 2px var(--accent);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .5rem;
            background-color: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
            border-radius: 8px;
            padding: .75rem 1.75rem;
            font-size: .9375rem;
            font-weight: 500;
            transition: all .2s ease-out;
            cursor: pointer;
        }
        .btn-outline:hover {
            background-color: var(--primary);
            color: #fff;
            transform: translateY(-1px);
        }
        .btn-outline:active {
            transform: translateY(0);
        }
        .search-toggle {
            width: 200px;
            height: 40px;
            border-radius: 14px;
            background-color: var(--alt-bg);
            border: 1px solid transparent;
            display: flex;
            align-items: center;
            padding: 0 14px;
            gap: 8px;
            color: var(--muted-text);
            font-size: .8125rem;
            transition: all .2s ease-out;
            cursor: pointer;
        }
        .search-toggle:hover {
            background-color: #e8e2d8;
            border-color: var(--border-line);
        }
        .btn-gold {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .5rem;
            background: linear-gradient(135deg, var(--accent) 0%, #d9b979 60%, var(--accent) 100%);
            color: #1a2a24;
            border: none;
            border-radius: 8px;
            padding: .75rem 1.75rem;
            font-size: .9375rem;
            font-weight: 700;
            transition: all .2s ease-out;
            cursor: pointer;
            box-shadow: 0 4px 14px -4px rgba(201, 163, 95, .5);
        }
        .btn-gold:hover {
            background: linear-gradient(135deg, var(--accent-hover) 0%, #e8cd95 60%, var(--accent-hover) 100%);
            transform: translateY(-2px);
            box-shadow: 0 12px 28px -8px rgba(201, 163, 95, .6);
        }
        .badge-tag {
            display: inline-block;
            background: rgba(201, 163, 95, .12);
            color: var(--accent);
            font-size: .6875rem;
            font-weight: 600;
            padding: .25rem .75rem;
            border-radius: 9999px;
            letter-spacing: .02em;
        }
        .footer-link {
            color: rgba(255, 255, 255, .8);
            font-size: .875rem;
            transition: color .2s ease-out;
        }
        .footer-link:hover {
            color: var(--accent);
        }
        .card-item {
            background: var(--card-bg);
            border: 1px solid var(--border-line);
            border-radius: 12px;
            transition: all .25s ease-out;
        }
        .card-item:hover {
            transform: translateY(-4px);
            box-shadow: 0 16px 40px -12px rgba(0, 0, 0, .12);
        }
        .feature-card svg {
            transition: all .3s ease-out;
        }
        .feature-card:hover svg {
            color: var(--accent);
        }
        .hero-overlay {
            background: linear-gradient(120deg, rgba(11, 42, 34, .92) 0%, rgba(14, 59, 46, .78) 45%, rgba(11, 42, 34, .55) 100%);
        }
        .section-padding {
            padding: 88px 0;
        }
        @media (max-width: 768px) {
            .section-padding {
                padding: 56px 0;
            }
            .container-page {
                padding-left: 1.25rem;
                padding-right: 1.25rem;
            }
        }
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(24px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .animate-fade-up {
            animation: fadeUp .7s ease-out both;
        }
        .faq-item {
            border: 1px solid var(--border-line);
            border-radius: 12px;
            background: var(--card-bg);
            transition: all .2s ease-out;
            overflow: hidden;
        }
        .faq-item:hover {
            border-color: rgba(201, 163, 95, .4);
        }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1.25rem 1.5rem;
            font-weight: 600;
            color: var(--body-text);
            cursor: pointer;
            transition: color .2s ease-out;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            font-size: .9375rem;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            padding: 0 1.5rem;
            color: var(--muted-text);
            font-size: .875rem;
            line-height: 1.75;
            transition: max-height .3s ease-out, padding .3s ease-out;
            overflow: hidden;
        }
        .faq-item.active .faq-answer {
            max-height: 240px;
            padding-bottom: 1.25rem;
        }
        .faq-icon {
            transition: transform .3s ease-out;
            flex-shrink: 0;
            margin-left: 1rem;
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }
        .timeline-dot {
            position: relative;
        }
        .timeline-dot::before {
            content: '';
            position: absolute;
            left: 50%;
            top: 100%;
            width: 1px;
            height: 40px;
            background: linear-gradient(to bottom, var(--accent), rgba(201, 163, 95, .1));
            transform: translateX(-50%);
        }
        .timeline-dot:last-child::before {
            display: none;
        }
        .mobile-menu {
            position: fixed;
            top: 0;
            right: 0;
            bottom: 0;
            left: 0;
            background: rgba(11, 42, 34, .98);
            z-index: 999;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            opacity: 0;
            visibility: hidden;
            transition: opacity .3s ease-out, visibility .3s ease-out;
        }
        .mobile-menu.open {
            opacity: 1;
            visibility: visible;
        }
        .mobile-menu a {
            color: #fff;
            font-size: 1.5rem;
            font-weight: 600;
            padding: .75rem 0;
            opacity: .85;
            transition: opacity .2s ease-out, color .2s ease-out;
        }
        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--accent);
            opacity: 1;
        }
        .modal-overlay {
            position: fixed;
            top: 0;
            right: 0;
            bottom: 0;
            left: 0;
            background: rgba(0, 0, 0, .6);
            backdrop-filter: blur(4px);
            z-index: 1000;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 1rem;
            opacity: 0;
            visibility: hidden;
            transition: opacity .3s ease-out, visibility .3s ease-out;
        }
        .modal-overlay.open {
            opacity: 1;
            visibility: visible;
        }
        .modal-card {
            width: 480px;
            max-width: 100%;
            background: var(--card-bg);
            border-radius: 16px;
            box-shadow: 0 24px 64px -12px rgba(0, 0, 0, .25);
            transform: scale(.96);
            transition: transform .3s ease-out;
            padding: 2rem;
        }
        .modal-overlay.open .modal-card {
            transform: scale(1);
        }
        .cmd-overlay {
            position: fixed;
            top: 0;
            right: 0;
            bottom: 0;
            left: 0;
            background: rgba(11, 42, 34, .6);
            backdrop-filter: blur(6px);
            z-index: 1000;
            padding: 80px 1rem 0;
            opacity: 0;
            visibility: hidden;
            transition: opacity .3s ease-out, visibility .3s ease-out;
        }
        .cmd-overlay.open {
            opacity: 1;
            visibility: visible;
        }
        .cmd-box {
            max-width: 640px;
            margin: 0 auto;
            background: #fff;
            border-radius: 14px;
            box-shadow: 0 24px 64px -12px rgba(0, 0, 0, .3);
            overflow: hidden;
        }
        .stat-item {
            text-align: center;
            padding: 1.5rem .5rem;
        }
        .stat-number {
            font-size: 2.75rem;
            font-weight: 900;
            color: var(--accent);
            line-height: 1.1;
            font-family: "DIN Alternate", "Inter", sans-serif;
            letter-spacing: -.02em;
        }
        @media (max-width: 640px) {
            .stat-number {
                font-size: 2rem;
            }
        }

/* roulang page: article */
:root {
    --primary: #0E3B2E;
    --primary-hover: #14634B;
    --accent: #C9A35F;
    --accent-hover: #D4B578;
    --bg-base: #F7F5F1;
    --bg-alt: #EFEBE3;
    --bg-dark: #0B2A22;
    --text-body: #1F2A26;
    --text-muted: #5A6B64;
    --border: #E2DCD2;
    --card-bg: #FFFFFF;
    --success: #2D7A5B;
    --radius: 12px;
    --radius-btn: 8px;
    --radius-sm: 6px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,.04);
    --shadow-lg: 0 16px 40px -12px rgba(0,0,0,.15);
}
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
html {
    scroll-behavior: smooth;
}
body {
    font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    background: var(--bg-base);
    color: var(--text-body);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}
img {
    max-width: 100%;
    height: auto;
    display: block;
}
a {
    color: inherit;
    text-decoration: none;
    transition: color .2s ease-out;
}
button {
    cursor: pointer;
    font-family: inherit;
    border: none;
    background: none;
}
input, textarea, select {
    font-family: inherit;
}
.container-page {
    max-width: 1280px;
    margin: 0 auto;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
}
@media (min-width: 1024px) {
    .container-page {
        padding-left: 2rem;
        padding-right: 2rem;
    }
}
.bg-dark {
    background: var(--bg-dark);
}
.bg-accent {
    background: var(--accent);
}
.text-accent {
    color: var(--accent) !important;
}
.text-muted {
    color: var(--text-muted);
}
.bg-base {
    background: var(--bg-base);
}
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .5rem;
    background: var(--primary);
    color: #fff;
    font-weight: 600;
    font-size: .9375rem;
    padding: .75rem 1.625rem;
    border-radius: var(--radius-btn);
    border: 1px solid transparent;
    transition: all .2s ease-out;
    white-space: nowrap;
}
.btn-primary:hover {
    background: var(--accent);
    color: #fff;
}
.btn-primary:active {
    transform: translateY(1px);
}
.btn-primary:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}
.btn-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .5rem;
    background: transparent;
    color: var(--primary);
    font-weight: 600;
    font-size: .9375rem;
    padding: .75rem 1.625rem;
    border-radius: var(--radius-btn);
    border: 1px solid var(--primary);
    transition: all .2s ease-out;
    white-space: nowrap;
}
.btn-outline:hover {
    background: var(--primary);
    color: #fff;
}
.btn-outline:active {
    transform: translateY(1px);
}
.btn-outline:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}
.btn-gold {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .5rem;
    background: var(--accent);
    color: #0B2A22;
    font-weight: 700;
    font-size: .9375rem;
    padding: .75rem 1.625rem;
    border-radius: var(--radius-btn);
    border: 1px solid transparent;
    transition: all .2s ease-out;
    white-space: nowrap;
}
.btn-gold:hover {
    background: var(--accent-hover);
    color: #0B2A22;
}
.btn-gold:active {
    transform: translateY(1px);
}
.btn-gold:focus-visible {
    outline: 2px solid #fff;
    outline-offset: 2px;
}
.nav-link {
    font-size: .9375rem;
    font-weight: 500;
    color: var(--text-body);
    padding: .375rem .5rem;
    border-radius: var(--radius-sm);
    transition: all .2s ease-out;
    position: relative;
    white-space: nowrap;
}
.nav-link:hover {
    color: var(--primary);
    background: rgba(14,59,46,.05);
}
.nav-link.active {
    color: var(--primary);
    font-weight: 600;
}
.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 2px;
    background: var(--accent);
    border-radius: 2px;
}
.search-trigger {
    width: 200px;
    height: 40px;
    border-radius: 14px;
    background: var(--bg-alt);
    border: 1px solid transparent;
    display: flex;
    align-items: center;
    padding: 0 .875rem;
    color: var(--text-muted);
    font-size: .875rem;
    cursor: pointer;
    transition: all .2s ease;
}
.search-trigger:hover,
.search-trigger:focus-visible {
    border-color: var(--accent);
    background: #fff;
    outline: none;
}
.search-trigger kbd {
    background: #fff;
    border: 1px solid #e5e0d6;
    border-radius: 4px;
    padding: 1px 5px;
    font-size: .6875rem;
    color: var(--text-muted);
    margin-left: auto;
}
.card-item {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    transition: all .25s ease-out;
    overflow: hidden;
}
.card-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}
.card-item:hover .card-img img {
    transform: scale(1.04);
}
.card-img {
    overflow: hidden;
}
.card-img img {
    transition: transform .45s ease-out;
    width: 100%;
    object-fit: cover;
}
.badge-cat {
    display: inline-block;
    font-size: .75rem;
    font-weight: 600;
    color: var(--accent);
    background: rgba(201,163,95,.12);
    border-radius: 9999px;
    padding: .25rem .75rem;
    letter-spacing: .02em;
}
.breadcrumb-item {
    display: inline-flex;
    align-items: center;
    font-size: .875rem;
    color: var(--text-muted);
    transition: color .2s ease;
}
.breadcrumb-item:hover {
    color: var(--primary);
}
.breadcrumb-item.current {
    color: var(--primary);
    font-weight: 600;
}
.breadcrumb-sep {
    margin: 0 .5rem;
    color: #c0bcb4;
    font-size: .8125rem;
}
.article-content {
    font-size: 1.0625rem;
    line-height: 1.85;
    color: var(--text-body);
    word-break: break-word;
}
.article-content h2 {
    font-size: 1.5rem;
    font-weight: 800;
    margin-top: 2.75rem;
    margin-bottom: 1.125rem;
    padding-left: .875rem;
    border-left: 3px solid var(--accent);
    line-height: 1.35;
}
.article-content h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-top: 2.125rem;
    margin-bottom: .875rem;
    line-height: 1.4;
}
.article-content p {
    margin-bottom: 1.375rem;
}
.article-content ul,
.article-content ol {
    margin-bottom: 1.375rem;
    padding-left: 1.5rem;
}
.article-content ul {
    list-style: disc;
}
.article-content ol {
    list-style: decimal;
}
.article-content li {
    margin-bottom: .5rem;
}
.article-content blockquote {
    background: var(--bg-alt);
    border-left: 4px solid var(--accent);
    padding: 1rem 1.5rem;
    border-radius: 0 8px 8px 0;
    margin: 1.75rem 0;
    color: var(--text-muted);
    font-size: .9375rem;
}
.article-content blockquote p {
    margin-bottom: 0;
}
.article-content img {
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    margin: 1.75rem auto;
}
.article-content a {
    color: var(--primary);
    text-decoration: underline;
    text-underline-offset: 3px;
}
.article-content a:hover {
    color: var(--accent);
}
.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    font-size: .9375rem;
}
.article-content th,
.article-content td {
    border: 1px solid var(--border);
    padding: .75rem 1rem;
    text-align: left;
}
.article-content th {
    background: var(--bg-alt);
    font-weight: 600;
}
.article-content codewindow {
    display: block;
    background: #1f2937;
    color: #e5e7eb;
    border-radius: 10px;
    padding: 1rem 1.25rem;
    font-family: "SFMono-Regular", Consolas, monospace;
    font-size: .875rem;
    overflow-x: auto;
    margin: 1.5rem 0;
}
.article-content pre {
    background: #15231d;
    color: #e2f0e9;
    border-radius: 10px;
    padding: 1.125rem 1.375rem;
    overflow-x: auto;
    font-size: .875rem;
    line-height: 1.7;
    margin: 1.5rem 0;
}
.article-content iframe {
    border-radius: 12px;
    max-width: 100%;
}
.tag-chip {
    display: inline-block;
    background: var(--bg-alt);
    color: var(--text-muted);
    font-size: .8125rem;
    border-radius: 9999px;
    padding: .375rem .875rem;
    transition: all .2s ease;
}
.tag-chip:hover {
    background: var(--accent);
    color: #fff;
}
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.6);
    backdrop-filter: blur(4px);
    z-index: 50;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.25rem;
    opacity: 0;
    visibility: hidden;
    transition: opacity .3s ease, visibility .3s ease;
}
.modal-overlay.open {
    opacity: 1;
    visibility: visible;
}
.modal-card {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 25px 50px -12px rgba(0,0,0,.25);
    width: 100%;
    max-width: 480px;
    padding: 2rem;
    transform: scale(.96);
    transition: transform .3s ease;
}
.modal-overlay.open .modal-card {
    transform: scale(1);
}
.field-input {
    width: 100%;
    background: var(--bg-base);
    border: 1px solid var(--border);
    border-radius: var(--radius-btn);
    padding: .75rem .9375rem;
    font-size: .9375rem;
    color: var(--text-body);
    transition: all .2s ease;
    outline: none;
}
.field-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(14,59,46,.1);
    background: #fff;
}
.field-input::placeholder {
    color: #9ca8a2;
}
.field-label {
    display: block;
    font-size: .8125rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: .375rem;
}
.form-status {
    display: none;
    border-radius: var(--radius-btn);
    padding: .75rem 1rem;
    font-size: .875rem;
    font-weight: 500;
    margin-top: 1rem;
}
.form-status.success {
    display: block;
    background: rgba(45,122,91,.1);
    color: var(--success);
    border: 1px solid rgba(45,122,91,.2);
}
.form-status.error {
    display: block;
    background: rgba(190,70,60,.1);
    color: #b53b2e;
    border: 1px solid rgba(190,70,60,.2);
}
.mobile-menu {
    position: fixed;
    inset: 0;
    background: var(--bg-dark);
    z-index: 40;
    display: flex;
    flex-direction: column;
    padding: 6rem 2rem 2rem;
    transform: translateX(100%);
    transition: transform .35s ease-out;
}
.mobile-menu.open {
    transform: translateX(0);
}
.mobile-menu a {
    color: rgba(255,255,255,.9);
    font-size: 1.375rem;
    font-weight: 600;
    padding: .875rem 0;
    border-bottom: 1px solid rgba(255,255,255,.08);
    display: block;
}
.mobile-menu a.active {
    color: var(--accent);
}
.search-panel {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.6);
    backdrop-filter: blur(4px);
    z-index: 45;
    display: flex;
    justify-content: center;
    padding-top: 4rem;
    opacity: 0;
    visibility: hidden;
    transition: all .3s ease;
}
.search-panel.open {
    opacity: 1;
    visibility: visible;
}
.search-panel-inner {
    width: 100%;
    max-width: 640px;
    background: #fff;
    border-radius: 14px;
    box-shadow: 0 25px 50px -12px rgba(0,0,0,.25);
    padding: 1.5rem;
    height: max-content;
}
.scroll-reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity .7s ease-out, transform .7s ease-out;
}
.scroll-reveal.visible {
    opacity: 1;
    transform: translateY(0);
}
.meta-divider {
    width: 3px;
    height: 3px;
    border-radius: 50%;
    background: rgba(255,255,255,.5);
    display: inline-block;
    margin: 0 .5rem;
}
.hero-article {
    background-image: linear-gradient(rgba(11,42,34,.78), rgba(11,42,34,.82)), url('/assets/images/backpic/back-1.png');
    background-size: cover;
    background-position: center;
}
@media (max-width: 640px) {
    .container-page {
        padding-left: 1.125rem;
        padding-right: 1.125rem;
    }
    .hero-article {
        background-position: center 30%;
    }
    .article-content {
        font-size: 1rem;
    }
    .article-content h2 {
        font-size: 1.3125rem;
    }
}

/* roulang page: category2 */
:root {
            --primary: #0E3B2E;
            --primary-hover: #14634B;
            --accent: #C9A35F;
            --accent-hover: #D4B578;
            --base: #F7F5F1;
            --base-alt: #EFEBE3;
            --dark: #0B2A22;
            --text-main: #1F2A26;
            --text-secondary: #5A6B64;
            --border: #E2DCD2;
            --card-bg: #FFFFFF;
            --success: #2D7A5B;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-small: 6px;
            --shadow-card: 0 1px 3px rgba(0, 0, 0, .04);
            --shadow-hover: 0 16px 40px -12px rgba(0, 0, 0, .15);
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            color: var(--text-main);
            background: var(--base);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color .2s ease-out, background .2s ease-out, border-color .2s ease-out, box-shadow .2s ease-out;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
            transition: all .2s ease-out;
        }
        input,
        select,
        textarea {
            font-family: inherit;
            transition: border-color .2s ease-out, box-shadow .2s ease-out;
        }
        .container-page {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }
        @media (max-width: 768px) {
            .container-page {
                padding-left: 1rem;
                padding-right: 1rem;
            }
        }
        .nav-link {
            position: relative;
            font-size: .92rem;
            font-weight: 500;
            color: rgba(255, 255, 255, .85);
            padding: .45rem .1rem;
            white-space: nowrap;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            transition: width .25s ease-out;
        }
        .nav-link:hover {
            color: #fff;
        }
        .nav-link:hover::after,
        .nav-link.active::after {
            width: 100%;
        }
        .nav-link.active {
            color: var(--accent);
            font-weight: 600;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .5rem;
            background: var(--primary);
            color: #fff;
            font-size: .95rem;
            font-weight: 600;
            padding: .75rem 1.6rem;
            border-radius: var(--radius-btn);
            border: 1px solid var(--primary);
            transition: all .2s ease-out;
        }
        .btn-primary:hover {
            background: var(--accent);
            border-color: var(--accent);
            color: #0B2A22;
            transform: translateY(-1px);
            box-shadow: 0 8px 24px -6px rgba(201, 163, 95, .4);
        }
        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: none;
        }
        .btn-primary:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .5rem;
            background: transparent;
            color: var(--accent);
            font-size: .95rem;
            font-weight: 600;
            padding: .75rem 1.6rem;
            border-radius: var(--radius-btn);
            border: 1.5px solid var(--accent);
            transition: all .2s ease-out;
        }
        .btn-outline:hover {
            background: var(--accent);
            color: #0B2A22;
            box-shadow: 0 8px 24px -6px rgba(201, 163, 95, .35);
        }
        .btn-outline:active {
            transform: translateY(1px);
        }
        .btn-outline:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        .btn-white {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .5rem;
            background: #fff;
            color: var(--primary);
            font-size: .95rem;
            font-weight: 600;
            padding: .7rem 1.5rem;
            border-radius: var(--radius-btn);
            border: 1px solid rgba(255, 255, 255, .2);
            transition: all .2s ease-out;
        }
        .btn-white:hover {
            background: var(--accent);
            border-color: var(--accent);
            color: #0B2A22;
            transform: translateY(-1px);
            box-shadow: 0 8px 24px -6px rgba(201, 163, 95, .4);
        }
        .input-field {
            width: 100%;
            padding: .7rem .9rem;
            border: 1px solid var(--border);
            border-radius: var(--radius-btn);
            background: #fff;
            font-size: .9rem;
            color: var(--text-main);
            outline: none;
        }
        .input-field::placeholder {
            color: #9ca8a2;
        }
        .input-field:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(14, 59, 46, .1);
        }
        .badge-tag {
            display: inline-flex;
            align-items: center;
            padding: .25rem .8rem;
            background: rgba(201, 163, 95, .12);
            color: var(--accent);
            font-size: .75rem;
            font-weight: 600;
            border-radius: 9999px;
            letter-spacing: .02em;
        }
        .badge-solid {
            display: inline-flex;
            align-items: center;
            padding: .3rem .85rem;
            background: var(--accent);
            color: #fff;
            font-size: .75rem;
            font-weight: 700;
            border-radius: 9999px;
            letter-spacing: .04em;
        }
        .card {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            transition: transform .25s ease-out, box-shadow .25s ease-out;
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: .5rem;
            color: var(--accent);
            font-size: .8rem;
            font-weight: 700;
            letter-spacing: .12em;
            text-transform: uppercase;
        }
        .section-label::before {
            content: '';
            width: 28px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }
        .hero-backdrop {
            background-image: linear-gradient(100deg, rgba(11, 42, 34, .88) 0%, rgba(11, 42, 34, .72) 45%, rgba(11, 42, 34, .55) 100%), url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center center;
            background-repeat: no-repeat;
        }
        .faq-item {
            border: 1px solid var(--border);
            border-radius: 12px;
            background: #fff;
            overflow: hidden;
            transition: border-color .25s ease-out, box-shadow .25s ease-out;
        }
        .faq-item:hover {
            border-color: rgba(201, 163, 95, .4);
        }
        .faq-item.open {
            border-color: rgba(14, 59, 46, .25);
            box-shadow: 0 8px 30px -10px rgba(0, 0, 0, .08);
        }
        .faq-btn {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1.1rem 1.4rem;
            text-align: left;
            font-size: .98rem;
            font-weight: 600;
            color: var(--text-main);
            background: none;
            border: none;
        }
        .faq-btn:hover {
            color: var(--primary);
        }
        .faq-icon {
            flex-shrink: 0;
            width: 22px;
            height: 22px;
            border-radius: 50%;
            background: var(--base-alt);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: transform .3s ease-out, background .3s ease-out;
        }
        .faq-item.open .faq-icon {
            transform: rotate(135deg);
            background: var(--accent);
            color: #fff;
        }
        .faq-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease-out;
        }
        .faq-content-inner {
            padding: 0 1.4rem 1.2rem;
            font-size: .9rem;
            color: var(--text-secondary);
            line-height: 1.75;
        }
        .modal-overlay {
            position: fixed;
            inset: 0;
            z-index: 1000;
            background: rgba(0, 0, 0, .55);
            backdrop-filter: blur(4px);
            display: flex;
            align-items: center;
            justify-content: center;
            opacity: 0;
            visibility: hidden;
            transition: opacity .3s ease-out, visibility .3s ease-out;
        }
        .modal-overlay.active {
            opacity: 1;
            visibility: visible;
        }
        .modal-card {
            width: 480px;
            max-width: calc(100vw - 2rem);
            background: #fff;
            border-radius: 16px;
            box-shadow: 0 20px 55px rgba(0, 0, 0, .22);
            padding: 2.2rem;
            transform: scale(.96);
            transition: transform .3s ease-out;
            max-height: 90vh;
            overflow-y: auto;
        }
        .modal-overlay.active .modal-card {
            transform: scale(1);
        }
        .modal-close {
            position: absolute;
            top: 14px;
            right: 14px;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--base-alt);
            border: none;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            transition: all .2s ease-out;
        }
        .modal-close:hover {
            background: var(--accent);
            color: #fff;
        }
        .command-overlay {
            position: fixed;
            inset: 0;
            z-index: 999;
            background: rgba(11, 42, 34, .6);
            backdrop-filter: blur(6px);
            opacity: 0;
            visibility: hidden;
            transition: opacity .3s ease-out, visibility .3s ease-out;
        }
        .command-overlay.active {
            opacity: 1;
            visibility: visible;
        }
        .command-panel {
            position: fixed;
            top: 60px;
            left: 50%;
            transform: translateX(-50%) translateY(-8px);
            width: 560px;
            max-width: calc(100vw - 2rem);
            background: #fff;
            border-radius: 14px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, .2);
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
            transition: opacity .3s ease-out, transform .3s ease-out, visibility .3s ease-out;
        }
        .command-overlay.active~.command-panel {
            opacity: 1;
            visibility: visible;
            transform: translateX(-50%) translateY(0);
        }
        .command-panel.active {
            opacity: 1;
            visibility: visible;
            transform: translateX(-50%) translateY(0);
        }
        .timeline-line {
            position: relative;
            padding-left: 2.2rem;
        }
        .timeline-line::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 4px;
            bottom: 4px;
            width: 2px;
            background: linear-gradient(to bottom, var(--accent), rgba(201, 163, 95, .2));
            border-radius: 2px;
        }
        .timeline-dot {
            position: absolute;
            left: 2px;
            top: 4px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--accent);
            border: 3px solid #fff;
            box-shadow: 0 0 0 2px rgba(201, 163, 95, .35);
        }
        .stat-number {
            font-family: 'Inter', 'DIN Alternate', sans-serif;
            font-weight: 800;
            font-size: 2.6rem;
            line-height: 1.1;
            color: var(--accent);
        }
        @media (max-width: 768px) {
            .stat-number {
                font-size: 2rem;
            }
        }
        .mobile-menu {
            position: fixed;
            inset: 0;
            z-index: 998;
            background: var(--dark);
            display: flex;
            flex-direction: column;
            justify-content: center;
            padding: 2rem 1.5rem;
            opacity: 0;
            visibility: hidden;
            transition: all .3s ease-out;
        }
        .mobile-menu.active {
            opacity: 1;
            visibility: visible;
        }
        .mobile-menu a {
            color: #fff;
            font-size: 1.6rem;
            font-weight: 700;
            padding: .7rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }
        .mobile-menu a:hover {
            color: var(--accent);
        }
        .mobile-menu a.active {
            color: var(--accent);
        }
        .section-padding {
            padding-top: 5rem;
            padding-bottom: 5rem;
        }
        @media (max-width: 768px) {
            .section-padding {
                padding-top: 3.5rem;
                padding-bottom: 3.5rem;
            }
        }
        .hover-shadow {
            transition: transform .25s ease-out, box-shadow .25s ease-out;
        }
        .hover-shadow:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(24px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .animate-fade-up {
            animation: fadeUp .7s ease-out both;
        }
        .delay-100 {
            animation-delay: .1s;
        }
        .delay-200 {
            animation-delay: .2s;
        }
        .delay-300 {
            animation-delay: .3s;
        }

/* roulang page: category3 */
:root {
            --primary: #0E3B2E;
            --primary-hover: #14634B;
            --accent: #C9A35F;
            --accent-hover: #D4B578;
            --bg-base: #F7F5F1;
            --bg-alt: #EFEBE3;
            --bg-dark: #0B2A22;
            --text-main: #1F2A26;
            --text-secondary: #5A6B64;
            --border: #E2DCD2;
            --card-bg: #FFFFFF;
            --success: #2D7A5B;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-small: 6px;
            --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.04);
            --shadow-hover: 0 16px 40px -12px rgba(0, 0, 0, 0.15);
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Inter", sans-serif;
            background: var(--bg-base);
            color: var(--text-main);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color .2s ease;
        }
        button {
            cursor: pointer;
            font-family: inherit;
        }
        .container-page {
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }
        @media(min-width:1024px) {
            .container-page {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }
        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 6px 2px;
            position: relative;
            transition: color .2s ease;
            white-space: nowrap;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left;
            transition: transform .2s ease;
        }
        .nav-link:hover {
            color: var(--primary);
        }
        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-link.active::after {
            transform: scaleX(1);
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-btn);
            padding: 12px 28px;
            font-weight: 600;
            font-size: 15px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all .2s ease-out;
            border: none;
            line-height: 1.4;
        }
        .btn-primary:hover {
            background: var(--accent);
            transform: translateY(-1px);
            box-shadow: 0 8px 24px -8px rgba(201, 163, 95, .5);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-primary:focus-visible {
            outline: none;
            box-shadow: 0 0 0 3px rgba(201, 163, 95, .45);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
            border-radius: var(--radius-btn);
            padding: 11px 26px;
            font-weight: 600;
            font-size: 15px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all .2s ease-out;
            line-height: 1.4;
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-1px);
        }
        .btn-outline:active {
            transform: translateY(0);
        }
        .btn-outline:focus-visible {
            outline: none;
            box-shadow: 0 0 0 3px rgba(14, 59, 46, .3);
        }
        .btn-text {
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap .2s ease;
        }
        .btn-text:hover {
            gap: 10px;
            color: var(--accent);
        }
        .card-hover {
            transition: transform .2s ease, box-shadow .2s ease;
        }
        .card-hover:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }
        .timeline-wrap {
            position: relative;
        }
        .timeline-wrap::before {
            content: '';
            position: absolute;
            left: 15px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(to bottom, rgba(201, 163, 95, .7), rgba(201, 163, 95, .25), transparent);
        }
        .timeline-dot {
            position: absolute;
            left: 8px;
            top: 26px;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: var(--accent);
            border: 3px solid var(--bg-base);
            box-shadow: 0 0 0 3px rgba(201, 163, 95, .3);
            z-index: 2;
        }
        timeline-dot::after {
            content: '';
            position: absolute;
            inset: -5px;
            border-radius: 50%;
            border: 1px solid rgba(201, 163, 95, .2);
        }
        .timeline-item {
            position: relative;
            padding-left: 48px;
        }
        @media(min-width:1024px) {
            .timeline-wrap::before {
                left: 50%;
                transform: translateX(-1px);
            }
            .timeline-dot {
                left: 50%;
                transform: translateX(-8px);
            }
            .timeline-item {
                padding-left: 0;
            }
        }
        .line-clamp-2 {
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .line-clamp-3 {
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .3s ease, opacity .3s ease;
            opacity: 0;
        }
        .faq-item.open .faq-answer {
            max-height: 260px;
            opacity: 1;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            color: var(--accent);
        }
        .faq-icon {
            transition: transform .3s ease, color .3s ease;
        }
        .form-field {
            width: 100%;
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 12px 14px;
            font-size: 14px;
            background: #fff;
            color: var(--text-main);
            transition: border-color .2s ease, box-shadow .2s ease;
        }
        .form-field:focus {
            outline: none;
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(201, 163, 95, .2);
        }
        .form-field::placeholder {
            color: #aab5af;
        }
        .toast {
            transition: opacity .4s ease, transform .4s ease;
        }
        .toast.hidden-toast {
            opacity: 0;
            transform: translateY(10px);
            pointer-events: none;
        }
        .fade-up {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity .7s ease, transform .7s ease;
        }
        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }
        @keyframes pulse-ring {
            0% {
                box-shadow: 0 0 0 0 rgba(201, 163, 95, .4);
            }
            70% {
                box-shadow: 0 0 0 10px rgba(201, 163, 95, 0);
            }
            100% {
                box-shadow: 0 0 0 0 rgba(201, 163, 95, 0);
            }
        }
        .pulse-dot {
            animation: pulse-ring 2.5s infinite;
        }

/* roulang page: category4 */
:root {
            --primary: #0E3B2E;
            --primary-hover: #14634B;
            --accent: #C9A35F;
            --accent-hover: #D4B578;
            --base: #F7F5F1;
            --alt: #EFEBE3;
            --dark: #0B2A22;
            --body: #1F2A26;
            --muted: #5A6B64;
            --line: #E2DCD2;
            --card: #FFFFFF;
            --success: #2D7A5B;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-sm: 6px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, .04);
            --shadow-lg: 0 16px 40px -12px rgba(0, 0, 0, .15);
        }
        * {
            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: var(--base);
            color: var(--body);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: all .2s ease-out;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
        }
        input,
        textarea,
        select {
            font-family: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        .container-page {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }
        .section {
            padding-top: 88px;
            padding-bottom: 88px;
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: .35rem;
            font-size: .75rem;
            font-weight: 700;
            letter-spacing: .15em;
            text-transform: uppercase;
            color: var(--accent);
            background: rgba(201, 163, 95, .12);
            border-radius: 9999px;
            padding: .3rem .85rem;
            margin-bottom: .75rem;
        }
        .section-tag::before {
            content: '';
            width: 5px;
            height: 5px;
            border-radius: 50%;
            background: var(--accent);
        }
        @media (max-width: 768px) {
            .section {
                padding-top: 56px;
                padding-bottom: 56px;
            }
        }
        /* 导航 */
        .nav-link {
            position: relative;
            font-size: .925rem;
            font-weight: 500;
            color: var(--body);
            padding: .5rem .25rem;
            letter-spacing: .02em;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--primary);
            opacity: .8;
        }
        .nav-link.active {
            color: var(--primary);
            font-weight: 700;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -2px;
            height: 2px;
            border-radius: 2px;
            background: var(--accent);
        }
        /* 按钮 */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .5rem;
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: .925rem;
            padding: .625rem 1.5rem;
            border-radius: var(--radius-btn);
            transition: all .2s ease-out;
        }
        .btn-primary:hover {
            background: var(--accent);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: var(--shadow-lg);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-primary:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        .btn-accent {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .5rem;
            background: var(--accent);
            color: #0B2A22;
            font-weight: 700;
            font-size: .95rem;
            padding: .75rem 1.75rem;
            border-radius: var(--radius-btn);
            transition: all .2s ease-out;
        }
        .btn-accent:hover {
            background: var(--accent-hover);
            transform: translateY(-1px);
            box-shadow: 0 12px 28px -8px rgba(201, 163, 95, .45);
        }
        .btn-accent:active {
            transform: translateY(0);
        }
        .btn-accent:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .5rem;
            background: transparent;
            color: var(--primary);
            font-weight: 600;
            font-size: .9rem;
            padding: .625rem 1.5rem;
            border-radius: var(--radius-btn);
            border: 1px solid var(--primary);
            transition: all .2s ease-out;
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }
        .btn-outline:active {
            transform: translateY(0);
        }
        .btn-outline:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        /* 标签 */
        .badge {
            display: inline-flex;
            align-items: center;
            font-size: .75rem;
            font-weight: 600;
            color: var(--primary);
            background: var(--base);
            border: 1px solid var(--line);
            border-radius: 9999px;
            padding: .18rem .7rem;
            line-height: 1.4;
        }
        .tag {
            display: inline-flex;
            align-items: center;
            font-size: .72rem;
            font-weight: 500;
            color: var(--primary);
            background: var(--base);
            border: 1px solid var(--line);
            border-radius: 9999px;
            padding: .22rem .7rem;
            transition: all .2s ease-out;
        }
        .tag:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(201, 163, 95, .08);
        }
        /* 表单 */
        .form-input {
            width: 100%;
            padding: .65rem 1rem;
            font-size: .875rem;
            color: var(--body);
            background: var(--base);
            border: 1px solid var(--line);
            border-radius: 8px;
            outline: none;
            transition: all .2s ease-out;
        }
        .form-input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(14, 59, 46, .1);
            background: #fff;
        }
        .form-input::placeholder {
            color: #A8B0AC;
        }
        /* 卡片 */
        .card-hover {
            transition: all .3s ease-out;
        }
        .card-hover:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }
        /* FAQ */
        .faq-icon {
            transition: transform .3s ease-out, background-color .3s ease-out, color .3s ease-out;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--accent);
            color: #fff;
        }
        .faq-q {
            transition: color .2s ease-out;
        }
        .faq-q:hover {
            color: var(--primary-hover);
        }
        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease-out;
        }
        /* 行截断 */
        .line-clamp-2 {
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        /* 弹层动画 */
        .animate-modal-in {
            animation: modalIn .3s ease-out;
        }
        @keyframes modalIn {
            from {
                opacity: 0;
                transform: scale(.96) translateY(10px);
            }
            to {
                opacity: 1;
                transform: scale(1) translateY(0);
            }
        }
        .animate-fade-up {
            animation: fadeUp .7s ease-out both;
        }
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(24px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        /* 时间延迟 */
        .delay-100 {
            animation-delay: .1s;
        }
        .delay-200 {
            animation-delay: .2s;
        }
        .delay-300 {
            animation-delay: .3s;
        }
        /* 滚动条 */
        ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--alt);
        }
        ::-webkit-scrollbar-thumb {
            background: #C5C0B8;
            border-radius: 99px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: #A8A29B;
        }
        /* 页面进入动效 */
        .reveal {
            opacity: 0;
            transform: translateY(28px);
            transition: opacity .7s ease-out, transform .7s ease-out;
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }
        @media (max-width: 520px) {
            .container-page {
                padding-left: 1rem;
                padding-right: 1rem;
            }
        }