/* roulang page: index */
:root {
            --bg: #f6f8fb;
            --bg-soft: #eef5ff;
            --surface: #ffffff;
            --surface-2: rgba(255,255,255,.86);
            --text: #162033;
            --muted: #667085;
            --muted-2: #8a94a6;
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-soft: #dbeafe;
            --secondary: #10b981;
            --secondary-soft: #d1fae5;
            --warning: #f59e0b;
            --danger: #ef4444;
            --border: #dfe7f3;
            --shadow: 0 18px 45px rgba(22,32,51,.10);
            --shadow-soft: 0 10px 28px rgba(37,99,235,.10);
            --radius-xl: 28px;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 10px;
            --container: 1180px;
            --nav-h: 74px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            color: var(--text);
            background:
                radial-gradient(circle at 10% 0%, rgba(37,99,235,.12), transparent 34%),
                radial-gradient(circle at 88% 12%, rgba(16,185,129,.10), transparent 32%),
                var(--bg);
            line-height: 1.72;
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

        button, input, textarea {
            font: inherit;
        }

        button {
            border: 0;
            cursor: pointer;
        }

        :focus-visible {
            outline: 3px solid rgba(37,99,235,.32);
            outline-offset: 3px;
        }

        .container {
            width: min(100% - 40px, var(--container));
            margin: 0 auto;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            height: var(--nav-h);
            background: rgba(246,248,251,.82);
            backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(223,231,243,.78);
        }

        .nav-wrap {
            height: var(--nav-h);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 28px;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 12px;
            min-width: 0;
            font-weight: 900;
            letter-spacing: -.02em;
        }

        .brand-mark {
            width: 42px;
            height: 42px;
            border-radius: 15px;
            display: grid;
            place-items: center;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            box-shadow: 0 12px 22px rgba(37,99,235,.25);
            flex: 0 0 auto;
        }

        .brand-name {
            font-size: 18px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-links a {
            padding: 10px 15px;
            border-radius: 999px;
            color: var(--muted);
            font-weight: 700;
            transition: .2s ease;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--primary);
            background: var(--primary-soft);
        }

        .nav-action {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .menu-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 14px;
            background: var(--surface);
            border: 1px solid var(--border);
            color: var(--text);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            min-height: 44px;
            padding: 12px 20px;
            border-radius: 999px;
            font-weight: 800;
            transition: .22s ease;
            border: 1px solid transparent;
            white-space: nowrap;
        }

        .btn-primary {
            color: #fff;
            background: linear-gradient(135deg, var(--primary), #4f46e5);
            box-shadow: 0 14px 28px rgba(37,99,235,.28);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 18px 36px rgba(37,99,235,.34);
        }

        .btn-secondary {
            color: var(--primary);
            background: var(--surface);
            border-color: var(--border);
        }

        .btn-secondary:hover {
            border-color: rgba(37,99,235,.36);
            background: #f8fbff;
            transform: translateY(-2px);
        }

        .hero {
            position: relative;
            padding: 82px 0 68px;
            overflow: hidden;
        }

        .hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background:
                linear-gradient(90deg, rgba(246,248,251,.98) 0%, rgba(246,248,251,.88) 45%, rgba(246,248,251,.40) 100%),
                url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            z-index: -2;
        }

        .hero::after {
            content: "";
            position: absolute;
            width: 560px;
            height: 560px;
            right: -180px;
            bottom: -260px;
            background: radial-gradient(circle, rgba(37,99,235,.18), transparent 68%);
            z-index: -1;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1.08fr .92fr;
            gap: 48px;
            align-items: center;
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 12px;
            border-radius: 999px;
            color: var(--primary);
            background: rgba(219,234,254,.86);
            border: 1px solid rgba(37,99,235,.12);
            font-size: 14px;
            font-weight: 800;
            margin-bottom: 20px;
        }

        .eyebrow::before {
            content: "";
            width: 8px;
            height: 8px;
            border-radius: 99px;
            background: var(--secondary);
            box-shadow: 0 0 0 5px rgba(16,185,129,.16);
        }

        .hero h1 {
            font-size: clamp(38px, 6vw, 72px);
            line-height: 1.06;
            letter-spacing: -.055em;
            max-width: 820px;
            margin-bottom: 22px;
        }

        .hero h1 span {
            color: var(--primary);
        }

        .hero-subtitle {
            font-size: 18px;
            color: #475467;
            max-width: 720px;
            margin-bottom: 30px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 30px;
        }

        .hero-note {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .pill {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 12px;
            border-radius: 999px;
            color: #344054;
            background: rgba(255,255,255,.74);
            border: 1px solid rgba(223,231,243,.9);
            font-size: 14px;
            font-weight: 700;
        }

        .hero-panel {
            padding: 18px;
            border-radius: var(--radius-xl);
            background: rgba(255,255,255,.70);
            border: 1px solid rgba(255,255,255,.86);
            box-shadow: var(--shadow);
            backdrop-filter: blur(16px);
        }

        .hero-panel-inner {
            border-radius: 22px;
            overflow: hidden;
            background: var(--surface);
        }

        .hero-panel img {
            width: 100%;
            height: 310px;
            object-fit: cover;
        }

        .alert-box {
            padding: 22px;
        }

        .alert-title {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            margin-bottom: 12px;
        }

        .alert-title strong {
            font-size: 20px;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            border-radius: 999px;
            padding: 6px 10px;
            color: #065f46;
            background: var(--secondary-soft);
            font-size: 13px;
            font-weight: 900;
        }

        .check-list {
            display: grid;
            gap: 10px;
            color: var(--muted);
            font-size: 15px;
        }

        .check-list li {
            list-style: none;
            display: flex;
            gap: 10px;
        }

        .check-list li::before {
            content: "✓";
            width: 22px;
            height: 22px;
            display: inline-grid;
            place-items: center;
            border-radius: 50%;
            color: #fff;
            background: var(--secondary);
            flex: 0 0 auto;
            font-size: 13px;
            font-weight: 900;
            margin-top: 2px;
        }

        main {
            position: relative;
        }

        .section {
            padding: 76px 0;
        }

        .section-tight {
            padding: 56px 0;
        }

        .section-head {
            max-width: 760px;
            margin-bottom: 34px;
        }

        .section-kicker {
            color: var(--primary);
            font-weight: 900;
            margin-bottom: 8px;
        }

        .section-title {
            font-size: clamp(28px, 3.4vw, 44px);
            line-height: 1.15;
            letter-spacing: -.035em;
            margin-bottom: 14px;
        }

        .section-desc {
            color: var(--muted);
            font-size: 17px;
        }

        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: 0 1px 0 rgba(16,24,40,.02);
            transition: .22s ease;
        }

        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-soft);
            border-color: rgba(37,99,235,.26);
        }

        .icon {
            width: 48px;
            height: 48px;
            border-radius: 16px;
            display: grid;
            place-items: center;
            background: var(--primary-soft);
            color: var(--primary);
            font-weight: 900;
            font-size: 20px;
            margin-bottom: 18px;
        }

        .card h3 {
            font-size: 20px;
            margin-bottom: 10px;
            letter-spacing: -.01em;
        }

        .card p {
            color: var(--muted);
            font-size: 15.5px;
        }

        .steps {
            counter-reset: step;
            display: grid;
            gap: 16px;
        }

        .step {
            counter-increment: step;
            display: grid;
            grid-template-columns: 58px 1fr;
            gap: 16px;
            padding: 20px;
            border-radius: var(--radius-lg);
            background: var(--surface);
            border: 1px solid var(--border);
        }

        .step::before {
            content: counter(step);
            width: 48px;
            height: 48px;
            border-radius: 16px;
            display: grid;
            place-items: center;
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            font-weight: 900;
            box-shadow: 0 12px 24px rgba(37,99,235,.20);
        }

        .step h3 {
            margin-bottom: 6px;
            font-size: 19px;
        }

        .step p {
            color: var(--muted);
        }

        .feature-media {
            position: relative;
            border-radius: var(--radius-xl);
            overflow: hidden;
            min-height: 520px;
            background: #dbeafe;
            box-shadow: var(--shadow);
        }

        .feature-media img {
            width: 100%;
            height: 100%;
            min-height: 520px;
            object-fit: cover;
        }

        .feature-media::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 20%, rgba(22,32,51,.72) 100%);
        }

        .media-caption {
            position: absolute;
            left: 24px;
            right: 24px;
            bottom: 24px;
            z-index: 2;
            color: #fff;
            padding: 22px;
            border-radius: 20px;
            background: rgba(15,23,42,.32);
            border: 1px solid rgba(255,255,255,.22);
            backdrop-filter: blur(12px);
        }

        .media-caption strong {
            display: block;
            font-size: 22px;
            margin-bottom: 8px;
        }

        .soft-panel {
            background: linear-gradient(135deg, rgba(37,99,235,.08), rgba(16,185,129,.08));
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .stats {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .stat {
            padding: 24px;
            border-radius: var(--radius-lg);
            background: rgba(255,255,255,.76);
            border: 1px solid rgba(255,255,255,.9);
            box-shadow: 0 12px 30px rgba(22,32,51,.06);
        }

        .stat strong {
            display: block;
            font-size: 32px;
            letter-spacing: -.04em;
            color: var(--primary);
            margin-bottom: 4px;
        }

        .stat span {
            color: var(--muted);
            font-weight: 700;
            font-size: 14px;
        }

        .resource-card {
            overflow: hidden;
            padding: 0;
        }

        .resource-card img {
            height: 188px;
            width: 100%;
            object-fit: cover;
        }

        .resource-body {
            padding: 22px;
        }

        .resource-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 14px;
        }

        .tag {
            display: inline-flex;
            align-items: center;
            padding: 5px 9px;
            border-radius: 999px;
            background: #f1f5f9;
            color: #475467;
            font-size: 12px;
            font-weight: 800;
        }

        .updates-wrap {
            display: grid;
            grid-template-columns: .82fr 1.18fr;
            gap: 24px;
            align-items: start;
        }

        .updates-aside {
            border-radius: var(--radius-xl);
            padding: 30px;
            background: linear-gradient(135deg, #172554, #1e40af);
            color: #fff;
            box-shadow: var(--shadow);
            position: sticky;
            top: calc(var(--nav-h) + 22px);
        }

        .updates-aside h2 {
            font-size: 30px;
            line-height: 1.18;
            letter-spacing: -.03em;
            margin-bottom: 14px;
        }

        .updates-aside p {
            color: rgba(255,255,255,.78);
            margin-bottom: 20px;
        }

        .updates-aside .btn {
            background: rgba(255,255,255,.14);
            color: #fff;
            border-color: rgba(255,255,255,.24);
        }

        .post-list {
            display: grid;
            gap: 14px;
        }

        .post-item {
            display: block;
            padding: 20px;
            border-radius: var(--radius-lg);
            background: var(--surface);
            border: 1px solid var(--border);
            transition: .2s ease;
        }

        .post-item:hover {
            transform: translateY(-3px);
            border-color: rgba(37,99,235,.3);
            box-shadow: var(--shadow-soft);
        }

        .post-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            align-items: center;
            margin-bottom: 8px;
            color: var(--muted-2);
            font-size: 13px;
            font-weight: 800;
        }

        .post-cat {
            color: var(--primary);
            background: var(--primary-soft);
            padding: 4px 8px;
            border-radius: 999px;
        }

        .post-item h3 {
            font-size: 20px;
            line-height: 1.35;
            margin-bottom: 8px;
        }

        .post-item p {
            color: var(--muted);
            font-size: 15px;
        }

        .empty {
            padding: 26px;
            border-radius: var(--radius-lg);
            background: var(--surface);
            border: 1px dashed var(--border);
            color: var(--muted);
            text-align: center;
            font-weight: 800;
        }

        .faq {
            display: grid;
            gap: 14px;
        }

        .faq-item {
            border-radius: var(--radius-lg);
            background: var(--surface);
            border: 1px solid var(--border);
            overflow: hidden;
        }

        .faq-q {
            width: 100%;
            padding: 20px 22px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            background: transparent;
            color: var(--text);
            text-align: left;
            font-weight: 900;
        }

        .faq-q span {
            width: 26px;
            height: 26px;
            border-radius: 99px;
            display: grid;
            place-items: center;
            color: var(--primary);
            background: var(--primary-soft);
            flex: 0 0 auto;
            transition: .2s ease;
        }

        .faq-a {
            display: none;
            padding: 0 22px 22px;
            color: var(--muted);
        }

        .faq-item.open .faq-a {
            display: block;
        }

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

        .cta {
            padding: 0 0 76px;
        }

        .cta-box {
            position: relative;
            overflow: hidden;
            border-radius: 34px;
            padding: 46px;
            color: #fff;
            background:
                linear-gradient(135deg, rgba(15,23,42,.92), rgba(29,78,216,.84)),
                url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            box-shadow: var(--shadow);
        }

        .cta-box::after {
            content: "";
            position: absolute;
            width: 220px;
            height: 220px;
            right: -60px;
            top: -60px;
            border-radius: 50%;
            background: rgba(255,255,255,.12);
        }

        .cta-content {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr auto;
            gap: 24px;
            align-items: center;
        }

        .cta h2 {
            font-size: clamp(28px, 4vw, 46px);
            line-height: 1.15;
            letter-spacing: -.04em;
            margin-bottom: 12px;
        }

        .cta p {
            color: rgba(255,255,255,.78);
            max-width: 680px;
        }

        .cta-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            justify-content: flex-end;
        }

        .cta .btn-secondary {
            color: #fff;
            background: rgba(255,255,255,.14);
            border-color: rgba(255,255,255,.25);
        }

        .site-footer {
            background: #101828;
            color: #d0d5dd;
            padding: 52px 0 28px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.2fr .8fr .8fr;
            gap: 34px;
            margin-bottom: 34px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            color: #fff;
            font-weight: 900;
            font-size: 18px;
            margin-bottom: 14px;
        }

        .footer-brand .brand-mark {
            box-shadow: none;
        }

        .footer-about {
            color: #98a2b3;
            max-width: 520px;
        }

        .footer-col h3 {
            color: #fff;
            font-size: 16px;
            margin-bottom: 12px;
        }

        .footer-links {
            display: grid;
            gap: 8px;
        }

        .footer-links a {
            color: #98a2b3;
            transition: .2s ease;
        }

        .footer-links a:hover {
            color: #fff;
            transform: translateX(3px);
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            padding-top: 24px;
            border-top: 1px solid rgba(255,255,255,.10);
            color: #98a2b3;
            font-size: 14px;
        }

        @media (max-width: 1024px) {
            .hero-grid,
            .updates-wrap,
            .grid-2 {
                grid-template-columns: 1fr;
            }

            .hero {
                padding-top: 64px;
            }

            .hero-panel {
                max-width: 680px;
            }

            .grid-3,
            .stats {
                grid-template-columns: repeat(2, 1fr);
            }

            .updates-aside {
                position: static;
            }

            .cta-content {
                grid-template-columns: 1fr;
            }

            .cta-actions {
                justify-content: flex-start;
            }
        }

        @media (max-width: 768px) {
            .container {
                width: min(100% - 28px, var(--container));
            }

            .nav-links {
                position: fixed;
                left: 14px;
                right: 14px;
                top: calc(var(--nav-h) + 10px);
                display: none;
                flex-direction: column;
                align-items: stretch;
                padding: 14px;
                border-radius: 20px;
                background: rgba(255,255,255,.96);
                border: 1px solid var(--border);
                box-shadow: var(--shadow);
            }

            .nav-links.show {
                display: flex;
            }

            .nav-links a {
                border-radius: 14px;
            }

            .menu-toggle {
                display: inline-grid;
                place-items: center;
            }

            .nav-action .btn {
                display: none;
            }

            .hero h1 {
                font-size: clamp(34px, 12vw, 54px);
            }

            .hero-panel img {
                height: 240px;
            }

            .section {
                padding: 56px 0;
            }

            .grid-3,
            .stats {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 520px) {
            .brand-name {
                max-width: 210px;
                font-size: 16px;
            }

            .hero-actions,
            .cta-actions {
                flex-direction: column;
            }

            .btn {
                width: 100%;
            }

            .card,
            .step,
            .alert-box,
            .cta-box {
                padding: 20px;
            }

            .step {
                grid-template-columns: 1fr;
            }

            .feature-media,
            .feature-media img {
                min-height: 420px;
            }

            .footer-bottom {
                flex-direction: column;
            }
        }

/* roulang page: article */
:root {
            --bg: #f6f8fb;
            --bg-soft: #eef5ff;
            --surface: #ffffff;
            --surface-2: rgba(255,255,255,.86);
            --text: #162033;
            --muted: #667085;
            --muted-2: #8a94a6;
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-soft: #dbeafe;
            --secondary: #10b981;
            --secondary-soft: #d1fae5;
            --warning: #f59e0b;
            --danger: #ef4444;
            --border: #dfe7f3;
            --shadow: 0 18px 45px rgba(22,32,51,.10);
            --shadow-soft: 0 10px 28px rgba(37,99,235,.10);
            --radius-xl: 28px;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 10px;
            --container: 1180px;
            --nav-h: 74px;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            color: var(--text);
            background:
                radial-gradient(circle at 10% 0%, rgba(37,99,235,.12), transparent 34%),
                radial-gradient(circle at 88% 12%, rgba(16,185,129,.10), transparent 32%),
                var(--bg);
            line-height: 1.72;
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

        button,
        input,
        textarea {
            font: inherit;
        }

        button {
            border: 0;
            cursor: pointer;
        }

        ::selection {
            color: #fff;
            background: var(--primary);
        }

        .container {
            width: min(100% - 40px, var(--container));
            margin: 0 auto;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            height: var(--nav-h);
            background: rgba(246,248,251,.82);
            backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(223,231,243,.78);
        }

        .nav-wrap {
            height: var(--nav-h);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 28px;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 12px;
            min-width: 0;
            font-weight: 900;
            letter-spacing: -.02em;
        }

        .brand-mark {
            width: 42px;
            height: 42px;
            border-radius: 15px;
            display: grid;
            place-items: center;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            box-shadow: 0 12px 22px rgba(37,99,235,.25);
            flex: 0 0 auto;
        }

        .brand-name {
            font-size: 18px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-links a {
            padding: 10px 15px;
            border-radius: 999px;
            color: var(--muted);
            font-weight: 700;
            transition: .2s ease;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--primary);
            background: var(--primary-soft);
        }

        .nav-action {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .menu-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 14px;
            background: var(--surface);
            border: 1px solid var(--border);
            color: var(--text);
            align-items: center;
            justify-content: center;
            transition: .2s ease;
        }

        .menu-toggle:hover,
        .menu-toggle:focus-visible {
            border-color: rgba(37,99,235,.35);
            box-shadow: var(--shadow-soft);
            outline: none;
        }

        .menu-toggle span {
            width: 18px;
            height: 2px;
            border-radius: 99px;
            background: var(--text);
            position: relative;
        }

        .menu-toggle span::before,
        .menu-toggle span::after {
            content: "";
            position: absolute;
            left: 0;
            width: 18px;
            height: 2px;
            border-radius: 99px;
            background: var(--text);
        }

        .menu-toggle span::before {
            top: -6px;
        }

        .menu-toggle span::after {
            top: 6px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            min-height: 44px;
            padding: 12px 20px;
            border-radius: 999px;
            font-weight: 800;
            transition: .22s ease;
            border: 1px solid transparent;
            white-space: nowrap;
        }

        .btn-primary {
            color: #fff;
            background: linear-gradient(135deg, var(--primary), #4f46e5);
            box-shadow: 0 14px 28px rgba(37,99,235,.28);
        }

        .btn-primary:hover {
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 18px 36px rgba(37,99,235,.34);
        }

        .btn-secondary {
            color: var(--primary);
            background: var(--surface);
            border-color: var(--border);
        }

        .btn-secondary:hover {
            color: var(--primary);
            border-color: rgba(37,99,235,.36);
            background: #f8fbff;
            transform: translateY(-2px);
        }

        .btn:focus-visible,
        a:focus-visible {
            outline: 3px solid rgba(37,99,235,.24);
            outline-offset: 3px;
        }

        .article-hero {
            position: relative;
            padding: 70px 0 54px;
            overflow: hidden;
            border-bottom: 1px solid rgba(223,231,243,.72);
        }

        .article-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background:
                linear-gradient(90deg, rgba(246,248,251,.97) 0%, rgba(246,248,251,.88) 52%, rgba(246,248,251,.50) 100%),
                url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            z-index: -2;
        }

        .article-hero::after {
            content: "";
            position: absolute;
            right: -160px;
            top: -240px;
            width: 520px;
            height: 520px;
            background: radial-gradient(circle, rgba(16,185,129,.20), transparent 68%);
            z-index: -1;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 9px;
            margin: 0 0 18px;
            color: var(--muted);
            font-size: 14px;
            font-weight: 700;
        }

        .breadcrumb a {
            color: var(--primary);
        }

        .breadcrumb a:hover {
            color: var(--primary-dark);
        }

        .breadcrumb .separator {
            color: var(--muted-2);
        }

        .article-title-wrap {
            max-width: 860px;
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 12px;
            border-radius: 999px;
            color: var(--primary);
            background: rgba(219,234,254,.86);
            border: 1px solid rgba(37,99,235,.12);
            font-size: 14px;
            font-weight: 800;
            margin-bottom: 18px;
        }

        .eyebrow::before {
            content: "";
            width: 8px;
            height: 8px;
            border-radius: 99px;
            background: var(--secondary);
            box-shadow: 0 0 0 5px rgba(16,185,129,.13);
        }

        h1 {
            margin: 0;
            font-size: clamp(32px, 5vw, 58px);
            line-height: 1.12;
            letter-spacing: -.045em;
            font-weight: 950;
            color: var(--text);
        }

        .article-desc {
            max-width: 780px;
            margin: 20px 0 0;
            color: var(--muted);
            font-size: 18px;
        }

        .meta-row {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 24px;
        }

        .meta-pill {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 9px 13px;
            border-radius: 999px;
            background: rgba(255,255,255,.76);
            border: 1px solid rgba(223,231,243,.92);
            color: var(--muted);
            font-weight: 800;
            font-size: 14px;
            box-shadow: 0 8px 22px rgba(22,32,51,.05);
        }

        main {
            padding: 58px 0 72px;
        }

        .content-layout {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 340px;
            gap: 32px;
            align-items: start;
        }

        .article-card,
        .side-card,
        .notice-card,
        .resource-card,
        .faq-item,
        .cta-panel {
            background: var(--surface-2);
            border: 1px solid rgba(223,231,243,.84);
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow);
        }

        .article-card {
            padding: 36px;
            overflow: hidden;
        }

        .cover-frame {
            position: relative;
            overflow: hidden;
            border-radius: 24px;
            margin-bottom: 30px;
            border: 1px solid rgba(223,231,243,.9);
            box-shadow: var(--shadow-soft);
        }

        .cover-frame::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 45%, rgba(22,32,51,.34));
            pointer-events: none;
        }

        .cover-frame img {
            width: 100%;
            height: 330px;
            object-fit: cover;
            transition: transform .4s ease;
        }

        .cover-frame:hover img {
            transform: scale(1.035);
        }

        .article-content {
            color: #2b3447;
            font-size: 17px;
        }

        .article-content h2,
        .article-content h3,
        .article-content h4 {
            color: var(--text);
            line-height: 1.28;
            letter-spacing: -.02em;
            margin: 34px 0 14px;
            font-weight: 900;
        }

        .article-content h2 {
            font-size: 28px;
            padding-top: 10px;
        }

        .article-content h3 {
            font-size: 22px;
        }

        .article-content p {
            margin: 0 0 18px;
        }

        .article-content a {
            color: var(--primary);
            font-weight: 800;
            border-bottom: 1px solid rgba(37,99,235,.28);
        }

        .article-content a:hover {
            color: var(--primary-dark);
            border-bottom-color: var(--primary-dark);
        }

        .article-content ul,
        .article-content ol {
            margin: 16px 0 22px;
            padding-left: 1.35em;
        }

        .article-content li {
            margin: 8px 0;
        }

        .article-content blockquote {
            margin: 26px 0;
            padding: 20px 22px;
            border-left: 5px solid var(--primary);
            background: linear-gradient(135deg, rgba(219,234,254,.72), rgba(209,250,229,.45));
            border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
            color: #334155;
            font-weight: 700;
        }

        .article-content img {
            border-radius: var(--radius-lg);
            margin: 24px 0;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-soft);
        }

        .article-content table {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0;
            overflow: hidden;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            margin: 24px 0;
            background: #fff;
        }

        .article-content th,
        .article-content td {
            padding: 14px 16px;
            border-bottom: 1px solid var(--border);
            vertical-align: top;
        }

        .article-content th {
            background: var(--bg-soft);
            color: var(--text);
            font-weight: 900;
        }

        .article-content tr:last-child td {
            border-bottom: 0;
        }

        .not-found {
            text-align: center;
            padding: 58px 20px;
        }

        .not-found h2 {
            margin: 0 0 12px;
            font-size: 30px;
            font-weight: 950;
        }

        .not-found p {
            color: var(--muted);
            margin: 0 0 24px;
        }

        .sidebar {
            position: sticky;
            top: calc(var(--nav-h) + 24px);
            display: grid;
            gap: 18px;
        }

        .side-card {
            padding: 22px;
            box-shadow: var(--shadow-soft);
        }

        .side-card h2,
        .side-card h3 {
            margin: 0 0 14px;
            font-size: 20px;
            font-weight: 950;
            letter-spacing: -.02em;
        }

        .side-card p {
            margin: 0 0 16px;
            color: var(--muted);
            font-size: 15px;
        }

        .safe-list {
            display: grid;
            gap: 12px;
            margin: 0;
            padding: 0;
            list-style: none;
        }

        .safe-list li {
            display: flex;
            gap: 10px;
            padding: 12px;
            border: 1px solid rgba(223,231,243,.78);
            border-radius: var(--radius-md);
            background: #fff;
            color: #3b465b;
            font-weight: 700;
        }

        .safe-list li::before {
            content: "✓";
            width: 22px;
            height: 22px;
            display: grid;
            place-items: center;
            flex: 0 0 auto;
            border-radius: 999px;
            color: #fff;
            background: var(--secondary);
            font-size: 13px;
            font-weight: 900;
        }

        .quick-report {
            display: grid;
            gap: 12px;
        }

        .report-link {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            padding: 13px 14px;
            border-radius: var(--radius-md);
            color: var(--text);
            background: linear-gradient(135deg, #fff, #f8fbff);
            border: 1px solid var(--border);
            font-weight: 850;
            transition: .22s ease;
        }

        .report-link:hover {
            color: var(--primary);
            transform: translateY(-2px);
            border-color: rgba(37,99,235,.34);
            box-shadow: var(--shadow-soft);
        }

        .report-link span:last-child {
            color: var(--primary);
        }

        .article-tools {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 26px;
            margin-top: 30px;
            border-top: 1px solid var(--border);
        }

        .section {
            margin-top: 34px;
        }

        .section-head {
            display: flex;
            align-items: end;
            justify-content: space-between;
            gap: 24px;
            margin-bottom: 18px;
        }

        .section-head h2 {
            margin: 0;
            font-size: clamp(24px, 3vw, 34px);
            line-height: 1.18;
            font-weight: 950;
            letter-spacing: -.035em;
        }

        .section-head p {
            margin: 0;
            max-width: 620px;
            color: var(--muted);
        }

        .notice-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 18px;
        }

        .notice-card {
            padding: 22px;
            box-shadow: var(--shadow-soft);
            transition: .22s ease;
        }

        .notice-card:hover {
            transform: translateY(-4px);
            border-color: rgba(37,99,235,.24);
        }

        .notice-icon {
            width: 46px;
            height: 46px;
            display: grid;
            place-items: center;
            border-radius: 16px;
            color: var(--primary);
            background: var(--primary-soft);
            font-weight: 950;
            margin-bottom: 14px;
        }

        .notice-card:nth-child(2) .notice-icon {
            color: #047857;
            background: var(--secondary-soft);
        }

        .notice-card:nth-child(3) .notice-icon {
            color: #b45309;
            background: #fef3c7;
        }

        .notice-card h3 {
            margin: 0 0 8px;
            font-size: 19px;
            font-weight: 950;
        }

        .notice-card p {
            margin: 0;
            color: var(--muted);
            font-size: 15px;
        }

        .resource-strip {
            display: grid;
            grid-template-columns: .9fr 1.1fr;
            gap: 22px;
            align-items: center;
            padding: 24px;
            background: linear-gradient(135deg, rgba(255,255,255,.92), rgba(238,245,255,.84));
            border: 1px solid var(--border);
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow);
        }

        .resource-strip img {
            width: 100%;
            height: 260px;
            object-fit: cover;
            border-radius: 22px;
            border: 1px solid rgba(223,231,243,.88);
        }

        .resource-copy h2 {
            margin: 0 0 12px;
            font-size: clamp(24px, 3vw, 34px);
            font-weight: 950;
            letter-spacing: -.035em;
            line-height: 1.2;
        }

        .resource-copy p {
            margin: 0 0 18px;
            color: var(--muted);
        }

        .tag-row {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin: 18px 0 0;
        }

        .tag {
            display: inline-flex;
            align-items: center;
            border-radius: 999px;
            padding: 8px 12px;
            background: #fff;
            border: 1px solid var(--border);
            color: var(--muted);
            font-size: 14px;
            font-weight: 800;
        }

        .faq-list {
            display: grid;
            gap: 14px;
        }

        .faq-item {
            padding: 22px 24px;
            box-shadow: var(--shadow-soft);
        }

        .faq-item h3 {
            margin: 0 0 8px;
            font-size: 19px;
            font-weight: 950;
        }

        .faq-item p {
            margin: 0;
            color: var(--muted);
        }

        .cta-panel {
            position: relative;
            overflow: hidden;
            padding: 34px;
            background:
                linear-gradient(135deg, rgba(37,99,235,.94), rgba(16,185,129,.90)),
                url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
            color: #fff;
            border: 0;
        }

        .cta-panel::after {
            content: "";
            position: absolute;
            right: -110px;
            bottom: -150px;
            width: 360px;
            height: 360px;
            background: radial-gradient(circle, rgba(255,255,255,.22), transparent 66%);
        }

        .cta-inner {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: minmax(0, 1fr) auto;
            gap: 24px;
            align-items: center;
        }

        .cta-panel h2 {
            margin: 0 0 8px;
            font-size: clamp(24px, 3vw, 36px);
            font-weight: 950;
            letter-spacing: -.035em;
        }

        .cta-panel p {
            margin: 0;
            color: rgba(255,255,255,.86);
        }

        .cta-panel .btn-secondary {
            color: var(--primary);
            background: #fff;
            border-color: rgba(255,255,255,.65);
        }

        .site-footer {
            padding: 54px 0 26px;
            background: #111827;
            color: #d1d5db;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr .8fr .8fr;
            gap: 34px;
            padding-bottom: 34px;
            border-bottom: 1px solid rgba(255,255,255,.10);
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            color: #fff;
            font-weight: 950;
            font-size: 18px;
        }

        .footer-about {
            max-width: 520px;
            margin: 16px 0 0;
            color: #aeb7c6;
        }

        .footer-col h3 {
            margin: 0 0 14px;
            color: #fff;
            font-size: 16px;
            font-weight: 900;
        }

        .footer-links {
            display: grid;
            gap: 9px;
        }

        .footer-links a {
            color: #aeb7c6;
            transition: .2s ease;
        }

        .footer-links a:hover {
            color: #fff;
            transform: translateX(3px);
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            gap: 18px;
            flex-wrap: wrap;
            padding-top: 22px;
            color: #8b96a8;
            font-size: 14px;
        }

        @media (max-width: 1024px) {
            .content-layout {
                grid-template-columns: 1fr;
            }

            .sidebar {
                position: static;
                grid-template-columns: repeat(2, 1fr);
            }

            .resource-strip {
                grid-template-columns: 1fr;
            }

            .notice-grid {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            :root {
                --nav-h: 68px;
            }

            .container {
                width: min(100% - 28px, var(--container));
            }

            .brand-name {
                max-width: 210px;
            }

            .menu-toggle {
                display: inline-flex;
            }

            .nav-links {
                position: absolute;
                left: 14px;
                right: 14px;
                top: calc(var(--nav-h) + 10px);
                display: none;
                flex-direction: column;
                align-items: stretch;
                gap: 8px;
                padding: 12px;
                border-radius: 22px;
                background: rgba(255,255,255,.96);
                border: 1px solid var(--border);
                box-shadow: var(--shadow);
            }

            .nav-links.open {
                display: flex;
            }

            .nav-links a {
                padding: 12px 14px;
            }

            .nav-action .btn {
                display: none;
            }

            .article-hero {
                padding: 52px 0 42px;
            }

            .article-desc {
                font-size: 16px;
            }

            main {
                padding: 40px 0 56px;
            }

            .article-card {
                padding: 22px;
                border-radius: 24px;
            }

            .cover-frame img {
                height: 230px;
            }

            .sidebar {
                grid-template-columns: 1fr;
            }

            .section-head {
                display: block;
            }

            .section-head p {
                margin-top: 10px;
            }

            .cta-inner {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 520px) {
            .brand-mark {
                width: 38px;
                height: 38px;
                border-radius: 13px;
            }

            .brand-name {
                max-width: 170px;
                font-size: 16px;
            }

            .breadcrumb {
                font-size: 13px;
            }

            h1 {
                font-size: 31px;
            }

            .meta-pill {
                width: 100%;
                justify-content: center;
            }

            .article-content {
                font-size: 16px;
            }

            .article-content h2 {
                font-size: 24px;
            }

            .resource-strip {
                padding: 16px;
                border-radius: 22px;
            }

            .resource-strip img {
                height: 210px;
            }

            .cta-panel {
                padding: 24px;
                border-radius: 24px;
            }

            .article-tools .btn {
                width: 100%;
            }

            .footer-bottom {
                display: grid;
            }
        }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}