/* roulang page: index */
:root {
            --brand-50: #eef7ff; --brand-100: #d9edff; --brand-200: #bcdfff; --brand-300: #8ecaff; --brand-400: #59abff; --brand-500: #3189f6; --brand-600: #1b6ce5; --brand-700: #1556c8; --brand-800: #1747a0; --brand-900: #193f7f; --brand-950: #12294d;
            --ink-900: #0b1c33; --ink-800: #112a4d; --ink-700: #173a69; --ink-600: #1e4d8a; --ink-500: #2a6bb0; --ink-400: #5091cf; --ink-300: #85b7e2; --ink-200: #bcd9f0; --ink-100: #e3eff8; --ink-50: #f4f9fd;
            --accent: #ff6b3d; --gold: #f5b840; --jade: #1fb6a8;
        }
        * { box-sizing: border-box; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            color: #0b1c33; background: #f8fbfe; line-height: 1.65;
            margin: 0; padding: 0; -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
        }
        a { color: inherit; text-decoration: none; transition: all .22s ease; }
        img { max-width: 100%; display: block; }
        .container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }
        .container-wide { max-width: 1440px; }
        .section-gap { padding: 88px 0; }
        .section-gap-sm { padding: 56px 0; }
        .glass-nav {
            background: rgba(248,251,254,0.72); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(18,41,77,0.06); box-shadow: 0 6px 28px rgba(18,41,77,0.06);
        }
        .glass-nav.scrolled { background: rgba(248,251,254,0.92); box-shadow: 0 10px 34px rgba(18,41,77,0.12); }
        .nav-link { position: relative; font-weight: 500; font-size: 0.98rem; padding: 8px 0; color: #173a69; }
        .nav-link::after { content: ''; position: absolute; left: 0; right: 0; bottom: -4px; height: 2px; background: #1b6ce5; border-radius: 999px; transform: scaleX(0); transform-origin: center; transition: transform .25s ease; }
        .nav-link:hover { color: #1b6ce5; }
        .nav-link:hover::after, .nav-link.active::after { transform: scaleX(1); }
        .nav-link.active { color: #1b6ce5; }
        .btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font-weight: 600; border-radius: 999px; padding: 12px 26px; transition: all .25s ease; border: none; cursor: pointer; white-space: nowrap; }
        .btn-primary { background: #1b6ce5; color: #fff; box-shadow: 0 12px 30px -8px rgba(27,108,229,0.5); }
        .btn-primary:hover { background: #1556c8; transform: translateY(-2px); box-shadow: 0 18px 34px -8px rgba(27,108,229,0.62); }
        .btn-primary:active { transform: translateY(0); }
        .btn-accent { background: #ff6b3d; color: #fff; box-shadow: 0 12px 30px -8px rgba(255,107,61,0.42); }
        .btn-accent:hover { background: #e8542a; transform: translateY(-2px); box-shadow: 0 16px 36px -8px rgba(255,107,61,0.56); }
        .btn-outline { background: transparent; border: 1px solid #cddae7; color: #173a69; }
        .btn-outline:hover { border-color: #1b6ce5; color: #1b6ce5; background: #eef7ff; }
        .btn-white { background: #fff; color: #0b1c33; box-shadow: 0 10px 28px rgba(18,41,77,0.16); }
        .btn-white:hover { transform: translateY(-2px); box-shadow: 0 16px 34px rgba(18,41,77,0.24); }
        .btn-lg { padding: 15px 32px; font-size: 1.02rem; }
        .badge { display: inline-flex; align-items: center; gap: 6px; padding: 6px 14px; border-radius: 999px; font-size: 0.8rem; font-weight: 600; letter-spacing: 0.02em; }
        .badge-brand { background: #e3eff8; color: #1556c8; }
        .badge-accent { background: #fff0e8; color: #e8542a; }
        .badge-gold { background: #fff7e0; color: #9b6d0a; }
        .card { background: #fff; border-radius: 1.4rem; box-shadow: 0 18px 44px -18px rgba(18,41,77,0.18); border: 1px solid rgba(18,41,77,0.05); transition: all .25s ease; }
        .card:hover { transform: translateY(-5px); box-shadow: 0 26px 52px -18px rgba(18,41,77,0.28); }
        .card-cover { border-radius: 1.4rem 1.4rem 0 0; overflow: hidden; }
        .card-body { padding: 22px 22px 26px; }
        .card-title { font-size: 1.2rem; font-weight: 700; color: #0b1c33; line-height: 1.4; }
        .card-text { color: #487099; font-size: 0.94rem; line-height: 1.75; }
        .section-label { display: inline-flex; align-items: center; gap: 8px; text-transform: uppercase; letter-spacing: 0.1em; font-size: 0.75rem; font-weight: 700; color: #1b6ce5; background: #eef7ff; padding: 7px 16px; border-radius: 999px; margin-bottom: 18px; }
        .section-title { font-size: clamp(1.8rem, 3.2vw, 2.4rem); font-weight: 800; color: #0b1c33; letter-spacing: -0.02em; line-height: 1.3; margin-bottom: 16px; }
        .section-desc { font-size: 1.05rem; color: #487099; max-width: 760px; line-height: 1.8; }
        .divider { height: 1px; background: linear-gradient(90deg, transparent, #dfeaf3 30%, #dfeaf3 70%, transparent); }
        .glass-hero { background: rgba(11,28,51,0.38); backdrop-filter: blur(7px); -webkit-backdrop-filter: blur(7px); border: 1px solid rgba(255,255,255,0.2); border-radius: 2rem; padding: 28px; }
        .floating-bar { position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%); z-index: 60; width: min(92%, 680px); background: rgba(11,28,51,0.88); backdrop-filter: blur(22px); -webkit-backdrop-filter: blur(22px); border-radius: 999px; padding: 10px 14px 10px 26px; box-shadow: 0 22px 46px -10px rgba(11,28,51,0.5); display: flex; align-items: center; justify-content: space-between; gap: 14px; border: 1px solid rgba(255,255,255,0.14); }
        .track-scroll { scroll-snap-type: x mandatory; -webkit-overflow-scrolling: touch; scrollbar-width: none; }
        .track-scroll::-webkit-scrollbar { display: none; }
        .track-item { scroll-snap-align: start; flex: 0 0 auto; }
        .faq-item { border-bottom: 1px solid #e5edf6; }
        .faq-answer { max-height: 0; overflow: hidden; transition: max-height .35s ease, padding .3s ease; color: #487099; }
        .faq-item.open .faq-answer { max-height: 400px; padding-bottom: 22px; }
        .faq-toggle { cursor: pointer; padding: 20px 0; display: flex; justify-content: space-between; align-items: center; font-weight: 700; color: #0b1c33; transition: color .2s; background: none; border: none; width: 100%; text-align: left; }
        .faq-toggle:hover { color: #1b6ce5; }
        .faq-icon { font-size: 1.6rem; font-weight: 300; transition: transform .3s; color: #1b6ce5; }
        .faq-item.open .faq-icon { transform: rotate(45deg); }
        .nav-mobile { max-height: 0; overflow: hidden; transition: max-height .35s ease, padding .3s ease; }
        .nav-mobile.open { max-height: 480px; }
        .hero-gradient { background: linear-gradient(112deg, #0b1c33 0%, #12294d 52%, #173a69 100%); }
        .text-shadow-hero { text-shadow: 0 3px 16px rgba(11,28,51,0.42); }
        .btn-focus:focus-visible, a:focus-visible, button:focus-visible { outline: 3px solid #59abff; outline-offset: 3px; border-radius: 6px; }
        .stat-block { background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.16); border-radius: 1.4rem; padding: 24px 18px; backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); }
        .hover-lift { transition: all .3s ease; }
        .hover-lift:hover { transform: translateY(-6px); box-shadow: 0 26px 48px -20px rgba(18,41,77,0.34); }
        @media (max-width: 1024px) {
            .container { padding: 0 20px; }
            .section-gap { padding: 64px 0; }
            .section-gap-sm { padding: 44px 0; }
        }
        @media (max-width: 768px) {
            .desktop-nav { display: none !important; }
            .mobile-menu-btn { display: flex !important; }
            .section-gap { padding: 48px 0; }
            .floating-bar { padding: 10px 12px 10px 18px; gap: 8px; border-radius: 32px; }
            .floating-bar span { display: none; }
        }
        @media (min-width: 769px) {
            .mobile-menu-btn { display: none !important; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 14px; }
            .btn { padding: 10px 18px; font-size: 0.9rem; }
            .btn-lg { padding: 12px 22px; font-size: 0.95rem; }
            .floating-bar { top: auto; bottom: 16px; width: 94%; }
            .glass-hero { padding: 18px; border-radius: 1.4rem; }
        }

/* roulang page: category3 */
:root {
            --brand-50: #eef7ff;
            --brand-100: #d9edff;
            --brand-200: #bcdfff;
            --brand-300: #8ecaff;
            --brand-400: #59abff;
            --brand-500: #3189f6;
            --brand-600: #1b6ce5;
            --brand-700: #1556c8;
            --brand-800: #1747a0;
            --brand-900: #193f7f;
            --brand-950: #12294d;
            --ink-900: #0b1c33;
            --ink-800: #112a4d;
            --ink-700: #173a69;
            --ink-600: #1e4d8a;
            --ink-500: #2a6bb0;
            --ink-400: #5091cf;
            --ink-300: #85b7e2;
            --ink-200: #bcd9f0;
            --ink-100: #e3eff8;
            --ink-50: #f4f9fd;
            --accent: #ff6b3d;
            --gold: #f5b840;
            --jade: #1fb6a8;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            color: #0b1c33;
            background: #f8fbfe;
            line-height: 1.65;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: all .22s ease;
        }
        img {
            max-width: 100%;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .container-wide {
            max-width: 1440px;
        }
        .section-gap {
            padding: 88px 0;
        }
        .section-gap-sm {
            padding: 56px 0;
        }
        .glass-nav {
            background: rgba(248, 251, 254, 0.72);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(18, 41, 77, 0.06);
            box-shadow: 0 6px 28px rgba(18, 41, 77, 0.06);
        }
        .glass-nav.scrolled {
            background: rgba(248, 251, 254, 0.95);
            box-shadow: 0 10px 34px rgba(18, 41, 77, 0.12);
        }
        .nav-link {
            position: relative;
            font-weight: 500;
            font-size: 0.98rem;
            padding: 8px 0;
            color: #173a69;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -4px;
            height: 2px;
            background: #1b6ce5;
            border-radius: 999px;
            transform: scaleX(0);
            transform-origin: center;
            transition: transform .25s ease;
        }
        .nav-link:hover {
            color: #1b6ce5;
        }
        .nav-link:hover::after,
        .nav-link.active::after {
            transform: scaleX(1);
        }
        .nav-link.active {
            color: #1b6ce5;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            border-radius: 999px;
            padding: 12px 26px;
            transition: all .25s ease;
            border: none;
            cursor: pointer;
            white-space: nowrap;
        }
        .btn-primary {
            background: #1b6ce5;
            color: #fff;
            box-shadow: 0 12px 30px -8px rgba(27, 108, 229, 0.5);
        }
        .btn-primary:hover {
            background: #1556c8;
            transform: translateY(-2px);
            box-shadow: 0 18px 34px -8px rgba(27, 108, 229, 0.62);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-accent {
            background: #ff6b3d;
            color: #fff;
            box-shadow: 0 12px 30px -8px rgba(255, 107, 61, 0.42);
        }
        .btn-accent:hover {
            background: #e8542a;
            transform: translateY(-2px);
            box-shadow: 0 16px 36px -8px rgba(255, 107, 61, 0.56);
        }
        .btn-outline {
            background: transparent;
            border: 1px solid #cddae7;
            color: #173a69;
        }
        .btn-outline:hover {
            border-color: #1b6ce5;
            color: #1b6ce5;
            background: #eef7ff;
        }
        .btn-white {
            background: #fff;
            color: #0b1c33;
            box-shadow: 0 10px 28px rgba(18, 41, 77, 0.16);
        }
        .btn-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 16px 34px rgba(18, 41, 77, 0.24);
        }
        .btn-lg {
            padding: 15px 32px;
            font-size: 1.02rem;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.02em;
        }
        .badge-brand {
            background: #e3eff8;
            color: #1556c8;
        }
        .badge-accent {
            background: #fff0e8;
            color: #e8542a;
        }
        .badge-gold {
            background: #fff7e0;
            color: #9b6d0a;
        }
        .card {
            background: #fff;
            border-radius: 1.4rem;
            box-shadow: 0 18px 44px -18px rgba(18, 41, 77, 0.18);
            border: 1px solid rgba(18, 41, 77, 0.05);
            transition: all .25s ease;
        }
        .card:hover {
            transform: translateY(-5px);
            box-shadow: 0 26px 52px -18px rgba(18, 41, 77, 0.28);
        }
        .card-cover {
            border-radius: 1.4rem 1.4rem 0 0;
            overflow: hidden;
        }
        .card-body {
            padding: 22px 22px 26px;
        }
        .card-title {
            font-size: 1.2rem;
            font-weight: 700;
            color: #0b1c33;
            line-height: 1.4;
        }
        .card-text {
            color: #487099;
            font-size: 0.94rem;
            line-height: 1.75;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            text-transform: uppercase;
            letter-spacing: 0.1em;
            font-size: 0.75rem;
            font-weight: 700;
            color: #1b6ce5;
            background: #eef7ff;
            padding: 7px 16px;
            border-radius: 999px;
            margin-bottom: 18px;
        }
        .section-title {
            font-size: clamp(1.8rem, 3.2vw, 2.4rem);
            font-weight: 800;
            color: #0b1c33;
            letter-spacing: -0.02em;
            line-height: 1.3;
            margin-bottom: 16px;
        }
        .section-desc {
            font-size: 1.05rem;
            color: #487099;
            max-width: 760px;
            line-height: 1.8;
        }
        .divider {
            height: 1px;
            background: linear-gradient(90deg, transparent, #dfeaf3 30%, #dfeaf3 70%, transparent);
        }
        .glass-hero {
            background: rgba(11, 28, 51, 0.38);
            backdrop-filter: blur(7px);
            -webkit-backdrop-filter: blur(7px);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 2rem;
            padding: 28px;
        }
        .track-item {
            scroll-snap-align: start;
            flex: 0 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid #e5edf6;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease, padding .3s ease;
            color: #487099;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding-bottom: 22px;
        }
        .faq-toggle {
            cursor: pointer;
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 700;
            color: #0b1c33;
            transition: color .2s;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            font-size: 1rem;
            font-family: inherit;
        }
        .faq-toggle:hover {
            color: #1b6ce5;
        }
        .faq-icon {
            font-size: 1.6rem;
            font-weight: 300;
            transition: transform .3s;
            color: #1b6ce5;
            flex-shrink: 0;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .nav-mobile {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease, padding .3s ease;
        }
        .nav-mobile.open {
            max-height: 480px;
        }
        .hero-gradient {
            background: linear-gradient(112deg, #0b1c33 0%, #12294d 52%, #173a69 100%);
        }
        .text-shadow-hero {
            text-shadow: 0 3px 16px rgba(11, 28, 51, 0.42);
        }
        .btn-focus:focus-visible,
        a:focus-visible,
        button:focus-visible {
            outline: 3px solid #59abff;
            outline-offset: 3px;
            border-radius: 6px;
        }
        .form-input {
            width: 100%;
            padding: 14px 18px;
            border-radius: 16px;
            border: 1px solid #d5e3ef;
            background: #fff;
            font-size: 1rem;
            color: #0b1c33;
            transition: all .25s ease;
            font-family: inherit;
            outline: none;
        }
        .form-input:focus {
            border-color: #1b6ce5;
            box-shadow: 0 0 0 4px rgba(27, 108, 229, 0.12);
        }
        .form-input::placeholder {
            color: #9bb4cc;
        }
        .stat-number {
            font-size: clamp(1.9rem, 3.6vw, 2.8rem);
            font-weight: 800;
            color: #1b6ce5;
            line-height: 1.15;
            letter-spacing: -0.02em;
        }
        .stat-label {
            font-size: 0.9rem;
            color: #487099;
            margin-top: 4px;
        }
        .sticky-bottom-bar {
            position: sticky;
            bottom: 24px;
            z-index: 40;
            max-width: 680px;
            margin: 0 auto;
            background: #fff;
            border-radius: 999px;
            box-shadow: 0 18px 50px -12px rgba(11, 28, 51, 0.35);
            border: 1px solid rgba(18, 41, 77, 0.06);
            padding: 10px 10px 10px 22px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
        }
        .table-dark {
            background: rgba(11, 28, 51, 0.82);
            backdrop-filter: blur(12px);
            border-radius: 1.4rem;
            border: 1px solid rgba(255, 255, 255, 0.08);
        }
        .data-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 18px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.92rem;
        }
        .data-row:last-child {
            border-bottom: none;
        }
        .data-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--jade);
            flex-shrink: 0;
        }
        .data-dot.orange {
            background: var(--accent);
        }
        .data-dot.blue {
            background: #59abff;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: #487099;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: #1b6ce5;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb span {
            color: #9bb4cc;
        }

        @media (min-width: 1024px) {
            .desktop-nav {
                display: flex !important;
            }
            .mobile-menu-btn {
                display: none !important;
            }
        }
        @media (max-width: 1023px) {
            .desktop-nav {
                display: none !important;
            }
            .mobile-menu-btn {
                display: flex !important;
            }
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 20px;
            }
            .section-gap {
                padding: 64px 0;
            }
            .section-gap-sm {
                padding: 44px 0;
            }
            .sticky-bottom-bar {
                flex-direction: column;
                border-radius: 1.4rem;
                padding: 16px;
                gap: 10px;
                bottom: 12px;
            }
            .sticky-bottom-bar .btn {
                width: 100%;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }
            .btn {
                padding: 10px 18px;
                font-size: 0.9rem;
            }
            .btn-lg {
                padding: 12px 22px;
                font-size: 0.95rem;
            }
            .glass-hero {
                padding: 18px;
                border-radius: 1.4rem;
            }
            .data-row {
                font-size: 0.82rem;
                padding: 10px 12px;
            }
        }

.form-input { width: 100%; border: 1px solid #dbe5ef; border-radius: 999px; padding: 12px 18px; font-size: 0.95rem; color: #0b1c33; background: #fff; outline: none; transition: all .2s; }
        .form-input:focus { border-color: #1b6ce5; box-shadow: 0 0 0 4px rgba(27,108,229,0.1); }
        .stat-number { font-size: 2.2rem; font-weight: 800; color: #1b6ce5; line-height: 1.2; }
        .stat-label { font-size: 0.85rem; color: #487099; margin-top: 4px; font-weight: 500; }
        .table-dark { background: #0b1c33; border-radius: 1.6rem; box-shadow: 0 24px 50px -20px rgba(11,28,51,0.5); padding: 28px; }
        .data-row { display: flex; justify-content: space-between; align-items: center; padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,0.08); font-size: 0.95rem; }
        .data-row:last-of-type { border-bottom: none; }
        .sticky-bottom-bar { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); z-index: 60; display: flex; align-items: center; gap: 16px; background: rgba(255,255,255,0.94); backdrop-filter: blur(16px); border: 1px solid rgba(18,41,77,0.08); border-radius: 999px; padding: 10px 16px; box-shadow: 0 18px 46px -12px rgba(18,41,77,0.3); max-width: calc(100vw - 40px); }
        @media (max-width: 640px) {
            .sticky-bottom-bar { flex-direction: column; align-items: center; text-align: center; border-radius: 24px; padding: 12px 18px; gap: 8px; }
            .data-row, .stat-number { font-size: 1.6rem; }
        }

/* roulang page: category2 */
:root {
            --brand-50: #eef7ff;
            --brand-100: #d9edff;
            --brand-200: #bcdfff;
            --brand-300: #8ecaff;
            --brand-400: #59abff;
            --brand-500: #3189f6;
            --brand-600: #1b6ce5;
            --brand-700: #1556c8;
            --brand-800: #1747a0;
            --brand-900: #193f7f;
            --brand-950: #12294d;
            --ink-900: #0b1c33;
            --ink-800: #112a4d;
            --ink-700: #173a69;
            --ink-600: #1e4d8a;
            --ink-500: #2a6bb0;
            --ink-400: #5091cf;
            --ink-300: #85b7e2;
            --ink-200: #bcd9f0;
            --ink-100: #e3eff8;
            --ink-50: #f4f9fd;
            --accent: #ff6b3d;
            --gold: #f5b840;
            --jade: #1fb6a8;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            color: #0b1c33;
            background: #f8fbfe;
            line-height: 1.65;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: all .22s ease;
        }
        img {
            max-width: 100%;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .container-wide {
            max-width: 1440px;
        }
        .section-gap {
            padding: 88px 0;
        }
        .section-gap-sm {
            padding: 56px 0;
        }
        .glass-nav {
            background: rgba(248, 251, 254, 0.72);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(18, 41, 77, 0.06);
            box-shadow: 0 6px 28px rgba(18, 41, 77, 0.06);
        }
        .glass-nav.scrolled {
            background: rgba(248, 251, 254, 0.92);
            box-shadow: 0 10px 34px rgba(18, 41, 77, 0.12);
        }
        .nav-link {
            position: relative;
            font-weight: 500;
            font-size: 0.98rem;
            padding: 8px 0;
            color: #173a69;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -4px;
            height: 2px;
            background: #1b6ce5;
            border-radius: 999px;
            transform: scaleX(0);
            transform-origin: center;
            transition: transform .25s ease;
        }
        .nav-link:hover {
            color: #1b6ce5;
        }
        .nav-link:hover::after,
        .nav-link.active::after {
            transform: scaleX(1);
        }
        .nav-link.active {
            color: #1b6ce5;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            border-radius: 999px;
            padding: 12px 26px;
            transition: all .25s ease;
            border: none;
            cursor: pointer;
            white-space: nowrap;
        }
        .btn-primary {
            background: #1b6ce5;
            color: #fff;
            box-shadow: 0 12px 30px -8px rgba(27, 108, 229, 0.5);
        }
        .btn-primary:hover {
            background: #1556c8;
            transform: translateY(-2px);
            box-shadow: 0 18px 34px -8px rgba(27, 108, 229, 0.62);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-accent {
            background: #ff6b3d;
            color: #fff;
            box-shadow: 0 12px 30px -8px rgba(255, 107, 61, 0.42);
        }
        .btn-accent:hover {
            background: #e8542a;
            transform: translateY(-2px);
            box-shadow: 0 16px 36px -8px rgba(255, 107, 61, 0.56);
        }
        .btn-outline {
            background: transparent;
            border: 1px solid #cddae7;
            color: #173a69;
        }
        .btn-outline:hover {
            border-color: #1b6ce5;
            color: #1b6ce5;
            background: #eef7ff;
        }
        .btn-white {
            background: #fff;
            color: #0b1c33;
            box-shadow: 0 10px 28px rgba(18, 41, 77, 0.16);
        }
        .btn-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 16px 34px rgba(18, 41, 77, 0.24);
        }
        .btn-lg {
            padding: 15px 32px;
            font-size: 1.02rem;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.02em;
        }
        .badge-brand {
            background: #e3eff8;
            color: #1556c8;
        }
        .badge-accent {
            background: #fff0e8;
            color: #e8542a;
        }
        .badge-gold {
            background: #fff7e0;
            color: #9b6d0a;
        }
        .card {
            background: #fff;
            border-radius: 1.4rem;
            box-shadow: 0 18px 44px -18px rgba(18, 41, 77, 0.18);
            border: 1px solid rgba(18, 41, 77, 0.05);
            transition: all .25s ease;
        }
        .card:hover {
            transform: translateY(-5px);
            box-shadow: 0 26px 52px -18px rgba(18, 41, 77, 0.28);
        }
        .card-cover {
            border-radius: 1.4rem 1.4rem 0 0;
            overflow: hidden;
        }
        .card-body {
            padding: 22px 22px 26px;
        }
        .card-title {
            font-size: 1.2rem;
            font-weight: 700;
            color: #0b1c33;
            line-height: 1.4;
        }
        .card-text {
            color: #487099;
            font-size: 0.94rem;
            line-height: 1.75;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            text-transform: uppercase;
            letter-spacing: 0.1em;
            font-size: 0.75rem;
            font-weight: 700;
            color: #1b6ce5;
            background: #eef7ff;
            padding: 7px 16px;
            border-radius: 999px;
            margin-bottom: 18px;
        }
        .section-title {
            font-size: clamp(1.8rem, 3.2vw, 2.4rem);
            font-weight: 800;
            color: #0b1c33;
            letter-spacing: -0.02em;
            line-height: 1.3;
            margin-bottom: 16px;
        }
        .section-desc {
            font-size: 1.05rem;
            color: #487099;
            max-width: 760px;
            line-height: 1.8;
        }
        .divider {
            height: 1px;
            background: linear-gradient(90deg, transparent, #dfeaf3 30%, #dfeaf3 70%, transparent);
        }
        .glass-hero {
            background: rgba(11, 28, 51, 0.38);
            backdrop-filter: blur(7px);
            -webkit-backdrop-filter: blur(7px);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 2rem;
            padding: 28px;
        }
        .faq-item {
            border-bottom: 1px solid #e5edf6;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease, padding .3s ease;
            color: #487099;
            font-size: 0.95rem;
            line-height: 1.8;
        }
        .faq-item.open .faq-answer {
            max-height: 500px;
            padding-bottom: 22px;
        }
        .faq-toggle {
            cursor: pointer;
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 700;
            color: #0b1c33;
            transition: color .2s;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            font-size: 1rem;
        }
        .faq-toggle:hover {
            color: #1b6ce5;
        }
        .faq-icon {
            font-size: 1.6rem;
            font-weight: 300;
            transition: transform .3s;
            color: #1b6ce5;
            flex-shrink: 0;
            margin-left: 12px;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .nav-mobile {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease, padding .3s ease;
        }
        .nav-mobile.open {
            max-height: 520px;
        }
        .hero-gradient {
            background: linear-gradient(112deg, #0b1c33 0%, #12294d 52%, #173a69 100%);
        }
        .text-shadow-hero {
            text-shadow: 0 3px 16px rgba(11, 28, 51, 0.42);
        }
        .btn-focus:focus-visible,
        a:focus-visible,
        button:focus-visible {
            outline: 3px solid #59abff;
            outline-offset: 3px;
            border-radius: 6px;
        }
        .hero-slant-image {
            clip-path: polygon(3% 0%, 100% 2%, 97% 100%, 0% 98%);
            transition: clip-path .4s ease;
        }
        .hero-slant-image:hover {
            clip-path: polygon(0% 0%, 100% 0%, 100% 100%, 0% 100%);
        }
        .stat-block {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 1rem;
            padding: 16px 20px;
            transition: background .25s ease, border-color .25s ease;
        }
        .stat-block:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.22);
        }
        .sticky-cta-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 60;
            background: rgba(11, 28, 51, 0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            box-shadow: 0 -10px 30px rgba(18, 41, 77, 0.25);
            transform: translateY(100%);
            transition: transform .4s cubic-bezier(.4, 0, .2, 1);
        }
        .sticky-cta-bar.visible {
            transform: translateY(0);
        }
        .table-mini {
            font-size: 0.85rem;
        }
        .table-mini th {
            font-weight: 600;
            color: #487099;
            text-align: left;
            padding: 8px 12px;
            border-bottom: 1px solid #e5edf6;
            white-space: nowrap;
        }
        .table-mini td {
            padding: 10px 12px;
            border-bottom: 1px solid #f0f5fa;
            white-space: nowrap;
        }
        .table-mini tr:last-child td {
            border-bottom: none;
        }
        .trend-up {
            color: #1fb6a8;
            font-weight: 700;
        }
        .trend-down {
            color: #ff6b3d;
            font-weight: 700;
        }
        .data-pulse-dot {
            width: 8px;
            height: 8px;
            border-radius: 999px;
            background: #1fb6a8;
            display: inline-block;
            animation: pulse-dot 1.6s ease-in-out infinite;
        }
        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.4; transform: scale(0.7); }
        }
        .tooltip-underline {
            border-bottom: 1px dashed #85b7e2;
            cursor: help;
        }
        @media (min-width: 1025px) {
            .desktop-nav { display: flex !important; }
            .mobile-menu-btn { display: none !important; }
        }
        @media (max-width: 1024px) {
            .desktop-nav { display: none !important; }
            .mobile-menu-btn { display: flex !important; }
            .section-gap { padding: 64px 0; }
            .section-gap-sm { padding: 44px 0; }
            .container { padding: 0 20px; }
        }
        @media (max-width: 768px) {
            .section-gap { padding: 48px 0; }
            .section-gap-sm { padding: 36px 0; }
            .container { padding: 0 16px; }
            .btn { padding: 10px 18px; font-size: 0.9rem; }
            .btn-lg { padding: 12px 22px; font-size: 0.95rem; }
            .glass-hero { padding: 20px; }
            .card-body { padding: 18px 18px 22px; }
            .hero-slant-image { clip-path: polygon(0% 0%, 100% 0%, 100% 100%, 0% 100%); }
            .table-mini { font-size: 0.75rem; }
            .table-mini th, .table-mini td { padding: 6px 8px; }
            .sticky-cta-bar .container { padding: 0 12px; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 12px; }
            .section-gap { padding: 40px 0; }
            .section-gap-sm { padding: 28px 0; }
            .section-title { font-size: 1.5rem; }
            .section-desc { font-size: 0.95rem; }
            .btn { padding: 9px 16px; font-size: 0.85rem; }
            .btn-lg { padding: 11px 20px; font-size: 0.9rem; }
            .stat-block { padding: 12px 14px; }
        }

/* roulang page: category1 */
:root {
            --brand-50: #eef7ff;
            --brand-100: #d9edff;
            --brand-200: #bcdfff;
            --brand-300: #8ecaff;
            --brand-400: #59abff;
            --brand-500: #3189f6;
            --brand-600: #1b6ce5;
            --brand-700: #1556c8;
            --brand-800: #1747a0;
            --brand-900: #193f7f;
            --brand-950: #12294d;
            --ink-900: #0b1c33;
            --ink-800: #112a4d;
            --ink-700: #173a69;
            --ink-600: #1e4d8a;
            --ink-500: #2a6bb0;
            --ink-400: #5091cf;
            --ink-300: #85b7e2;
            --ink-200: #bcd9f0;
            --ink-100: #e3eff8;
            --ink-50: #f4f9fd;
            --accent: #ff6b3d;
            --gold: #f5b840;
            --jade: #1fb6a8;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            color: #0b1c33;
            background: #f8fbfe;
            line-height: 1.65;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
            padding-bottom: 76px;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: all .22s ease;
        }
        img {
            max-width: 100%;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .container-wide {
            max-width: 1440px;
        }
        .section-gap {
            padding: 88px 0;
        }
        .section-gap-sm {
            padding: 56px 0;
        }
        .glass-nav {
            background: rgba(248, 251, 254, 0.78);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(18, 41, 77, 0.06);
            box-shadow: 0 6px 28px rgba(18, 41, 77, 0.06);
        }
        .glass-nav.scrolled {
            background: rgba(248, 251, 254, 0.94);
            box-shadow: 0 10px 34px rgba(18, 41, 77, 0.12);
        }
        .nav-link {
            position: relative;
            font-weight: 500;
            font-size: 0.98rem;
            padding: 8px 0;
            color: #173a69;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -4px;
            height: 2px;
            background: #1b6ce5;
            border-radius: 999px;
            transform: scaleX(0);
            transform-origin: center;
            transition: transform .25s ease;
        }
        .nav-link:hover {
            color: #1b6ce5;
        }
        .nav-link:hover::after,
        .nav-link.active::after {
            transform: scaleX(1);
        }
        .nav-link.active {
            color: #1b6ce5;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            border-radius: 999px;
            padding: 12px 26px;
            transition: all .25s ease;
            border: none;
            cursor: pointer;
            white-space: nowrap;
        }
        .btn-primary {
            background: #1b6ce5;
            color: #fff;
            box-shadow: 0 12px 30px -8px rgba(27, 108, 229, 0.5);
        }
        .btn-primary:hover {
            background: #1556c8;
            transform: translateY(-2px);
            box-shadow: 0 18px 34px -8px rgba(27, 108, 229, 0.62);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-accent {
            background: #ff6b3d;
            color: #fff;
            box-shadow: 0 12px 30px -8px rgba(255, 107, 61, 0.42);
        }
        .btn-accent:hover {
            background: #e8542a;
            transform: translateY(-2px);
            box-shadow: 0 16px 36px -8px rgba(255, 107, 61, 0.56);
        }
        .btn-outline {
            background: transparent;
            border: 1px solid #cddae7;
            color: #173a69;
        }
        .btn-outline:hover {
            border-color: #1b6ce5;
            color: #1b6ce5;
            background: #eef7ff;
        }
        .btn-white {
            background: #fff;
            color: #0b1c33;
            box-shadow: 0 10px 28px rgba(18, 41, 77, 0.16);
        }
        .btn-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 16px 34px rgba(18, 41, 77, 0.24);
        }
        .btn-lg {
            padding: 15px 32px;
            font-size: 1.02rem;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.02em;
        }
        .badge-brand {
            background: #e3eff8;
            color: #1556c8;
        }
        .badge-accent {
            background: #fff0e8;
            color: #e8542a;
        }
        .badge-gold {
            background: #fff7e0;
            color: #9b6d0a;
        }
        .card {
            background: #fff;
            border-radius: 1.4rem;
            box-shadow: 0 18px 44px -18px rgba(18, 41, 77, 0.18);
            border: 1px solid rgba(18, 41, 77, 0.05);
            transition: all .25s ease;
        }
        .card:hover {
            transform: translateY(-5px);
            box-shadow: 0 26px 52px -18px rgba(18, 41, 77, 0.28);
        }
        .card-cover {
            border-radius: 1.4rem 1.4rem 0 0;
            overflow: hidden;
        }
        .card-body {
            padding: 22px 22px 26px;
        }
        .card-title {
            font-size: 1.2rem;
            font-weight: 700;
            color: #0b1c33;
            line-height: 1.4;
        }
        .card-text {
            color: #487099;
            font-size: 0.94rem;
            line-height: 1.75;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            text-transform: uppercase;
            letter-spacing: 0.1em;
            font-size: 0.75rem;
            font-weight: 700;
            color: #1b6ce5;
            background: #eef7ff;
            padding: 7px 16px;
            border-radius: 999px;
            margin-bottom: 18px;
        }
        .section-title {
            font-size: clamp(1.8rem, 3.2vw, 2.4rem);
            font-weight: 800;
            color: #0b1c33;
            letter-spacing: -0.02em;
            line-height: 1.3;
            margin-bottom: 16px;
        }
        .section-desc {
            font-size: 1.05rem;
            color: #487099;
            max-width: 760px;
            line-height: 1.8;
        }
        .divider {
            height: 1px;
            background: linear-gradient(90deg, transparent, #dfeaf3 30%, #dfeaf3 70%, transparent);
        }
        .glass-hero {
            background: rgba(11, 28, 51, 0.38);
            backdrop-filter: blur(7px);
            -webkit-backdrop-filter: blur(7px);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 2rem;
            padding: 28px;
        }
        .faq-item {
            border-bottom: 1px solid #e5edf6;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease, padding .3s ease;
            color: #487099;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding-bottom: 22px;
        }
        .faq-toggle {
            cursor: pointer;
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 700;
            color: #0b1c33;
            transition: color .2s;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
        }
        .faq-toggle:hover {
            color: #1b6ce5;
        }
        .faq-icon {
            font-size: 1.6rem;
            font-weight: 300;
            transition: transform .3s;
            color: #1b6ce5;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .nav-mobile {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease, padding .3s ease;
        }
        .nav-mobile.open {
            max-height: 480px;
        }
        .hero-gradient {
            background: linear-gradient(112deg, #0b1c33 0%, #12294d 52%, #173a69 100%);
        }
        .text-shadow-hero {
            text-shadow: 0 3px 16px rgba(11, 28, 51, 0.42);
        }
        .btn-focus:focus-visible,
        a:focus-visible,
        button:focus-visible {
            outline: 3px solid #59abff;
            outline-offset: 3px;
            border-radius: 6px;
        }
        .sticky-cta-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: rgba(11, 28, 51, 0.95);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            z-index: 60;
            padding: 12px 0 14px;
            box-shadow: 0 -8px 32px rgba(18, 41, 77, 0.32);
        }
        .comparison-highlight {
            background: linear-gradient(135deg, #ffffff 0%, #eef7ff 100%);
            border: 2px solid #1b6ce5;
            box-shadow: 0 24px 52px -16px rgba(27, 108, 229, 0.4);
        }
        .stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: #0b1c33;
            letter-spacing: -0.02em;
            line-height: 1.2;
        }
        .data-dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            margin-right: 6px;
        }
        .live-pulse {
            animation: livePulse 1.8s ease-in-out infinite;
        }
        @keyframes livePulse {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.55; transform: scale(1.15); }
        }
        .scope-strip {
            background: #eef7ff;
            border: 1px solid #d9edff;
            border-radius: 999px;
            padding: 6px 18px;
            font-size: 0.88rem;
            font-weight: 600;
            color: #1556c8;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .data-table-cell {
            padding: 12px 16px;
            font-size: 0.9rem;
            color: #173a69;
            border-bottom: 1px solid #e5edf6;
        }
        .data-table-head {
            background: #eef7ff;
            font-weight: 700;
            color: #0b1c33;
            font-size: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }
        .mobile-menu-btn {
            display: none !important;
        }
        @media (min-width: 1024px) {
            .desktop-nav {
                display: flex !important;
            }
            .mobile-menu-btn {
                display: none !important;
            }
            .container {
                padding: 0 24px;
            }
            .section-gap {
                padding: 88px 0;
            }
        }
        @media (max-width: 1023px) {
            .desktop-nav {
                display: none !important;
            }
            .mobile-menu-btn {
                display: flex !important;
            }
            .section-gap {
                padding: 64px 0;
            }
            .container {
                padding: 0 20px;
            }
        }
        @media (max-width: 767px) {
            .section-gap {
                padding: 48px 0;
            }
            .container {
                padding: 0 14px;
            }
            .btn {
                padding: 10px 18px;
                font-size: 0.9rem;
            }
            .btn-lg {
                padding: 12px 22px;
                font-size: 0.95rem;
            }
            .glass-hero {
                padding: 20px;
            }
            body {
                padding-bottom: 80px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 12px;
            }
            .stat-number {
                font-size: 1.6rem;
            }
            .section-title {
                font-size: 1.55rem;
            }
            .sticky-cta-bar {
                padding: 10px 0 12px;
            }
        }

/* roulang page: category4 */
:root {
            --brand-50: #eef7ff;
            --brand-100: #d9edff;
            --brand-200: #bcdfff;
            --brand-300: #8ecaff;
            --brand-400: #59abff;
            --brand-500: #3189f6;
            --brand-600: #1b6ce5;
            --brand-700: #1556c8;
            --brand-800: #1747a0;
            --brand-900: #193f7f;
            --brand-950: #12294d;
            --ink-900: #0b1c33;
            --ink-800: #112a4d;
            --ink-700: #173a69;
            --ink-600: #1e4d8a;
            --ink-500: #2a6bb0;
            --ink-400: #5091cf;
            --ink-300: #85b7e2;
            --ink-200: #bcd9f0;
            --ink-100: #e3eff8;
            --ink-50: #f4f9fd;
            --accent: #ff6b3d;
            --gold: #f5b840;
            --jade: #1fb6a8;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            color: #0b1c33;
            background: #f8fbfe;
            line-height: 1.65;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: all .22s ease;
        }
        img {
            max-width: 100%;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .container-wide {
            max-width: 1440px;
        }
        .section-gap {
            padding: 88px 0;
        }
        .section-gap-sm {
            padding: 56px 0;
        }
        .glass-nav {
            background: rgba(248, 251, 254, 0.72);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(18, 41, 77, 0.06);
            box-shadow: 0 6px 28px rgba(18, 41, 77, 0.06);
        }
        .glass-nav.scrolled {
            background: rgba(248, 251, 254, 0.92);
            box-shadow: 0 10px 34px rgba(18, 41, 77, 0.12);
        }
        .nav-link {
            position: relative;
            font-weight: 500;
            font-size: 0.98rem;
            padding: 8px 0;
            color: #173a69;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -4px;
            height: 2px;
            background: #1b6ce5;
            border-radius: 999px;
            transform: scaleX(0);
            transform-origin: center;
            transition: transform .25s ease;
        }
        .nav-link:hover {
            color: #1b6ce5;
        }
        .nav-link:hover::after,
        .nav-link.active::after {
            transform: scaleX(1);
        }
        .nav-link.active {
            color: #1b6ce5;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            border-radius: 999px;
            padding: 12px 26px;
            transition: all .25s ease;
            border: none;
            cursor: pointer;
            white-space: nowrap;
        }
        .btn-primary {
            background: #1b6ce5;
            color: #fff;
            box-shadow: 0 12px 30px -8px rgba(27, 108, 229, 0.5);
        }
        .btn-primary:hover {
            background: #1556c8;
            transform: translateY(-2px);
            box-shadow: 0 18px 34px -8px rgba(27, 108, 229, 0.62);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-accent {
            background: #ff6b3d;
            color: #fff;
            box-shadow: 0 12px 30px -8px rgba(255, 107, 61, 0.42);
        }
        .btn-accent:hover {
            background: #e8542a;
            transform: translateY(-2px);
            box-shadow: 0 16px 36px -8px rgba(255, 107, 61, 0.56);
        }
        .btn-outline {
            background: transparent;
            border: 1px solid #cddae7;
            color: #173a69;
        }
        .btn-outline:hover {
            border-color: #1b6ce5;
            color: #1b6ce5;
            background: #eef7ff;
        }
        .btn-white {
            background: #fff;
            color: #0b1c33;
            box-shadow: 0 10px 28px rgba(18, 41, 77, 0.16);
        }
        .btn-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 16px 34px rgba(18, 41, 77, 0.24);
        }
        .btn-lg {
            padding: 15px 32px;
            font-size: 1.02rem;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.02em;
        }
        .badge-brand {
            background: #e3eff8;
            color: #1556c8;
        }
        .badge-accent {
            background: #fff0e8;
            color: #e8542a;
        }
        .badge-gold {
            background: #fff7e0;
            color: #9b6d0a;
        }
        .card {
            background: #fff;
            border-radius: 1.4rem;
            box-shadow: 0 18px 44px -18px rgba(18, 41, 77, 0.18);
            border: 1px solid rgba(18, 41, 77, 0.05);
            transition: all .25s ease;
        }
        .card:hover {
            transform: translateY(-5px);
            box-shadow: 0 26px 52px -18px rgba(18, 41, 77, 0.28);
        }
        .card-cover {
            border-radius: 1.4rem 1.4rem 0 0;
            overflow: hidden;
        }
        .card-body {
            padding: 22px 22px 26px;
        }
        .card-title {
            font-size: 1.2rem;
            font-weight: 700;
            color: #0b1c33;
            line-height: 1.4;
        }
        .card-text {
            color: #487099;
            font-size: 0.94rem;
            line-height: 1.75;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            text-transform: uppercase;
            letter-spacing: 0.1em;
            font-size: 0.75rem;
            font-weight: 700;
            color: #1b6ce5;
            background: #eef7ff;
            padding: 7px 16px;
            border-radius: 999px;
            margin-bottom: 18px;
        }
        .section-title {
            font-size: clamp(1.8rem, 3.2vw, 2.4rem);
            font-weight: 800;
            color: #0b1c33;
            letter-spacing: -0.02em;
            line-height: 1.3;
            margin-bottom: 16px;
        }
        .section-desc {
            font-size: 1.05rem;
            color: #487099;
            max-width: 760px;
            line-height: 1.8;
        }
        .divider {
            height: 1px;
            background: linear-gradient(90deg, transparent, #dfeaf3 30%, #dfeaf3 70%, transparent);
        }
        .hero-gradient {
            background: linear-gradient(112deg, #0b1c33 0%, #12294d 52%, #173a69 100%);
        }
        .text-shadow-hero {
            text-shadow: 0 3px 16px rgba(11, 28, 51, 0.42);
        }
        .btn-focus:focus-visible,
        a:focus-visible,
        button:focus-visible {
            outline: 3px solid #59abff;
            outline-offset: 3px;
            border-radius: 6px;
        }
        .faq-item {
            border-bottom: 1px solid #e5edf6;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease, padding .3s ease;
            color: #487099;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding-bottom: 22px;
        }
        .faq-toggle {
            cursor: pointer;
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 700;
            color: #0b1c33;
            transition: color .2s;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
        }
        .faq-toggle:hover {
            color: #1b6ce5;
        }
        .faq-icon {
            font-size: 1.6rem;
            font-weight: 300;
            transition: transform .3s;
            color: #1b6ce5;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .nav-mobile {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease, padding .3s ease;
        }
        .nav-mobile.open {
            max-height: 520px;
        }
        .desktop-nav {
            display: none !important;
        }
        .mobile-menu-btn {
            display: flex !important;
        }
        .fixed-cta-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 40;
            background: rgba(11, 28, 51, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding: 12px 0;
            transform: translateY(100%);
            transition: transform .4s ease;
            box-shadow: 0 -8px 32px rgba(11, 28, 51, 0.2);
        }
        .fixed-cta-bar.visible {
            transform: translateY(0);
        }
        .data-visual-card {
            background: #fff;
            border-radius: 1.2rem;
            padding: 20px;
            border: 1px solid rgba(18, 41, 77, 0.06);
            box-shadow: 0 12px 32px -14px rgba(18, 41, 77, 0.16);
            transition: all .25s ease;
        }
        .data-visual-card:hover {
            box-shadow: 0 20px 40px -14px rgba(18, 41, 77, 0.28);
            transform: translateY(-3px);
        }
        .dashboard-stage {
            background: linear-gradient(145deg, #0b1c33 0%, #12294d 45%, #1556c8 100%);
            border-radius: 1.8rem;
            position: relative;
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.1);
            box-shadow: 0 30px 60px -20px rgba(11, 28, 51, 0.5);
        }
        .dashboard-stage::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -20%;
            width: 70%;
            height: 200%;
            background: radial-gradient(ellipse, rgba(49, 137, 246, 0.28) 0%, transparent 65%);
            pointer-events: none;
        }
        .dashboard-stage::after {
            content: '';
            position: absolute;
            bottom: -40%;
            left: -10%;
            width: 60%;
            height: 160%;
            background: radial-gradient(ellipse, rgba(255, 107, 61, 0.14) 0%, transparent 60%);
            pointer-events: none;
        }
        @media (min-width: 1024px) {
            .desktop-nav {
                display: flex !important;
            }
            .mobile-menu-btn {
                display: none !important;
            }
        }
        @media (max-width: 768px) {
            .section-gap {
                padding: 64px 0;
            }
            .section-gap-sm {
                padding: 44px 0;
            }
            .container {
                padding: 0 20px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }
            .btn {
                padding: 10px 18px;
                font-size: 0.9rem;
            }
            .btn-lg {
                padding: 12px 22px;
                font-size: 0.95rem;
            }
            .section-gap {
                padding: 48px 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
        }

/* roulang page: category5 */
:root {
            --brand-50: #eef7ff; --brand-100: #d9edff; --brand-200: #bcdfff; --brand-300: #8ecaff; --brand-400: #59abff;
            --brand-500: #3189f6; --brand-600: #1b6ce5; --brand-700: #1556c8; --brand-800: #1747a0; --brand-900: #193f7f; --brand-950: #12294d;
            --ink-900: #0b1c33; --ink-800: #112a4d; --ink-700: #173a69; --ink-600: #1e4d8a; --ink-500: #2a6bb0; --ink-400: #5091cf;
            --ink-300: #85b7e2; --ink-200: #bcd9f0; --ink-100: #e3eff8; --ink-50: #f4f9fd;
            --accent: #ff6b3d; --gold: #f5b840; --jade: #1fb6a8;
            --accent-soft: #fff0e8; --gold-soft: #fff7e0; --jade-soft: #e6faf8;
            --shadow-card: 0 18px 44px -18px rgba(18,41,77,0.18);
            --shadow-card-hover: 0 26px 52px -18px rgba(18,41,77,0.28);
            --shadow-soft: 0 6px 28px rgba(18,41,77,0.06);
            --shadow-glow: 0 12px 30px -8px rgba(27,108,229,0.5);
            --radius-sm: 0.6rem; --radius-md: 1rem; --radius-lg: 1.4rem; --radius-xl: 2rem;
        }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            color: #0b1c33; background: #f8fbfe; line-height: 1.65;
            margin: 0; padding: 0; -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
            padding-bottom: 0;
        }
        a { color: inherit; text-decoration: none; transition: all .22s ease; }
        img { max-width: 100%; display: block; }
        .container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }
        .container-wide { max-width: 1440px; }
        .section-gap { padding: 88px 0; }
        .section-gap-sm { padding: 56px 0; }
        .glass-nav {
            background: rgba(248,251,254,0.72); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(18,41,77,0.06); box-shadow: 0 6px 28px rgba(18,41,77,0.06);
        }
        .glass-nav.scrolled { background: rgba(248,251,254,0.92); box-shadow: 0 10px 34px rgba(18,41,77,0.12); }
        .nav-link { position: relative; font-weight: 500; font-size: 0.98rem; padding: 8px 0; color: #173a69; }
        .nav-link::after { content: ''; position: absolute; left: 0; right: 0; bottom: -4px; height: 2px; background: #1b6ce5; border-radius: 999px; transform: scaleX(0); transform-origin: center; transition: transform .25s ease; }
        .nav-link:hover { color: #1b6ce5; }
        .nav-link:hover::after, .nav-link.active::after { transform: scaleX(1); }
        .nav-link.active { color: #1b6ce5; }
        .btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font-weight: 600; border-radius: 999px; padding: 12px 26px; transition: all .25s ease; border: none; cursor: pointer; white-space: nowrap; }
        .btn-primary { background: #1b6ce5; color: #fff; box-shadow: 0 12px 30px -8px rgba(27,108,229,0.5); }
        .btn-primary:hover { background: #1556c8; transform: translateY(-2px); box-shadow: 0 18px 34px -8px rgba(27,108,229,0.62); }
        .btn-primary:active { transform: translateY(0); }
        .btn-accent { background: #ff6b3d; color: #fff; box-shadow: 0 12px 30px -8px rgba(255,107,61,0.42); }
        .btn-accent:hover { background: #e8542a; transform: translateY(-2px); box-shadow: 0 16px 36px -8px rgba(255,107,61,0.56); }
        .btn-outline { background: transparent; border: 1px solid #cddae7; color: #173a69; }
        .btn-outline:hover { border-color: #1b6ce5; color: #1b6ce5; background: #eef7ff; }
        .btn-white { background: #fff; color: #0b1c33; box-shadow: 0 10px 28px rgba(18,41,77,0.16); }
        .btn-white:hover { transform: translateY(-2px); box-shadow: 0 16px 34px rgba(18,41,77,0.24); }
        .btn-lg { padding: 15px 32px; font-size: 1.02rem; }
        .badge { display: inline-flex; align-items: center; gap: 6px; padding: 6px 14px; border-radius: 999px; font-size: 0.8rem; font-weight: 600; letter-spacing: 0.02em; }
        .badge-brand { background: #e3eff8; color: #1556c8; }
        .badge-accent { background: #fff0e8; color: #e8542a; }
        .badge-gold { background: #fff7e0; color: #9b6d0a; }
        .card { background: #fff; border-radius: 1.4rem; box-shadow: 0 18px 44px -18px rgba(18,41,77,0.18); border: 1px solid rgba(18,41,77,0.05); transition: all .25s ease; }
        .card:hover { transform: translateY(-5px); box-shadow: 0 26px 52px -18px rgba(18,41,77,0.28); }
        .card-cover { border-radius: 1.4rem 1.4rem 0 0; overflow: hidden; }
        .card-body { padding: 22px 22px 26px; }
        .card-title { font-size: 1.2rem; font-weight: 700; color: #0b1c33; line-height: 1.4; }
        .card-text { color: #487099; font-size: 0.94rem; line-height: 1.75; }
        .section-label { display: inline-flex; align-items: center; gap: 8px; text-transform: uppercase; letter-spacing: 0.1em; font-size: 0.75rem; font-weight: 700; color: #1b6ce5; background: #eef7ff; padding: 7px 16px; border-radius: 999px; margin-bottom: 18px; }
        .section-title { font-size: clamp(1.8rem, 3.2vw, 2.4rem); font-weight: 800; color: #0b1c33; letter-spacing: -0.02em; line-height: 1.3; margin-bottom: 16px; }
        .section-desc { font-size: 1.05rem; color: #487099; max-width: 760px; line-height: 1.8; }
        .divider { height: 1px; background: linear-gradient(90deg, transparent, #dfeaf3 30%, #dfeaf3 70%, transparent); }
        .glass-hero { background: rgba(11,28,51,0.38); backdrop-filter: blur(7px); -webkit-backdrop-filter: blur(7px); border: 1px solid rgba(255,255,255,0.2); border-radius: 2rem; padding: 28px; }
        .faq-item { border-bottom: 1px solid #e5edf6; }
        .faq-answer { max-height: 0; overflow: hidden; transition: max-height .35s ease, padding .3s ease; color: #487099; }
        .faq-item.open .faq-answer { max-height: 400px; padding-bottom: 22px; }
        .faq-toggle { cursor: pointer; padding: 20px 0; display: flex; justify-content: space-between; align-items: center; font-weight: 700; color: #0b1c33; transition: color .2s; background: none; border: none; width: 100%; text-align: left; }
        .faq-toggle:hover { color: #1b6ce5; }
        .faq-icon { font-size: 1.6rem; font-weight: 300; transition: transform .3s; color: #1b6ce5; }
        .faq-item.open .faq-icon { transform: rotate(45deg); }
        .nav-mobile { max-height: 0; overflow: hidden; transition: max-height .35s ease, padding .3s ease; }
        .nav-mobile.open { max-height: 480px; }
        .hero-gradient { background: linear-gradient(112deg, #0b1c33 0%, #12294d 52%, #173a69 100%); }
        .text-shadow-hero { text-shadow: 0 3px 16px rgba(11,28,51,0.42); }
        a:focus-visible, button:focus-visible, .btn:focus-visible { outline: 3px solid #59abff; outline-offset: 3px; border-radius: 6px; }
        .fixed-cta-bar { position: fixed; bottom: 0; left: 0; right: 0; z-index: 60; background: rgba(11,28,51,0.95); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border-top: 1px solid rgba(255,255,255,0.12); padding: 14px 0; transform: translateY(100%); transition: transform .4s ease; }
        .fixed-cta-bar.visible { transform: translateY(0); }
        .fixed-cta-bar .container { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
        .news-card-animated { position: relative; overflow: hidden; }
        .news-card-animated::before { content: ''; position: absolute; top: 0; left: -100%; width: 60%; height: 100%; background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent); transform: skewX(-20deg); transition: left .6s; }
        .news-card-animated:hover::before { left: 120%; }
        .stat-block { border-left: 3px solid #1b6ce5; padding-left: 18px; }
        .stat-number { font-size: 2.4rem; font-weight: 800; color: #0b1c33; letter-spacing: -0.02em; line-height: 1.2; }
        .stat-label { color: #487099; font-size: 0.9rem; font-weight: 500; }

        @media (max-width: 1024px) {
            .desktop-nav { display: none !important; }
            .mobile-menu-btn { display: flex !important; }
            .section-gap { padding: 64px 0; }
            .section-gap-sm { padding: 44px 0; }
            .container { padding: 0 20px; }
        }
        @media (min-width: 1025px) {
            .mobile-menu-btn { display: none !important; }
            .desktop-nav { display: flex !important; }
        }
        @media (max-width: 768px) {
            .section-gap { padding: 48px 0; }
            .section-gap-sm { padding: 36px 0; }
            .container { padding: 0 14px; }
            .btn { padding: 10px 18px; font-size: 0.9rem; }
            .btn-lg { padding: 12px 22px; font-size: 0.95rem; }
            .glass-hero { padding: 18px; border-radius: 1.2rem; }
            .stat-number { font-size: 1.8rem; }
            .fixed-cta-bar { padding: 10px 0; }
            .fixed-cta-bar .container { gap: 8px; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 10px; }
            .section-gap { padding: 36px 0; }
            .btn { padding: 8px 14px; font-size: 0.82rem; }
            .btn-lg { padding: 10px 18px; font-size: 0.9rem; }
            .section-title { font-size: 1.5rem; }
        }
        .breadcrumb-link { color: #6b8ab5; transition: color .2s; }
        .breadcrumb-link:hover { color: #1b6ce5; }
        .breadcrumb-sep { color: #b0c8df; margin: 0 6px; user-select: none; }
        .category-chip { display: inline-flex; align-items: center; padding: 6px 16px; border-radius: 999px; background: #f0f7fe; color: #1b6ce5; font-size: 0.85rem; font-weight: 500; border: 1px solid #d9edff; transition: all .2s; }
        .category-chip:hover { background: #e3eff8; border-color: #8ecaff; }
        .category-chip.active { background: #1b6ce5; color: #fff; border-color: #1b6ce5; }

/* roulang page: category6 */
:root {
            --brand-50: #eef7ff; --brand-100: #d9edff; --brand-200: #bcdfff; --brand-300: #8ecaff; --brand-400: #59abff; --brand-500: #3189f6; --brand-600: #1b6ce5; --brand-700: #1556c8; --brand-800: #1747a0; --brand-900: #193f7f; --brand-950: #12294d;
            --ink-900: #0b1c33; --ink-800: #112a4d; --ink-700: #173a69; --ink-600: #1e4d8a; --ink-500: #2a6bb0; --ink-400: #5091cf; --ink-300: #85b7e2; --ink-200: #bcd9f0; --ink-100: #e3eff8; --ink-50: #f4f9fd;
            --accent: #ff6b3d; --gold: #f5b840; --jade: #1fb6a8;
        }
        * { box-sizing: border-box; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            color: #0b1c33; background: #f8fbfe; line-height: 1.65;
            margin: 0; padding: 0; -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
        }
        a { color: inherit; text-decoration: none; transition: all .22s ease; }
        img { max-width: 100%; display: block; }
        .container-custom { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }
        .container-wide { max-width: 1440px; }

        .glass-nav-custom {
            background: rgba(248,251,254,0.72); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(18,41,77,0.06); box-shadow: 0 6px 28px rgba(18,41,77,0.06);
            transition: background .3s ease, box-shadow .3s ease;
        }
        .glass-nav-custom.scrolled { background: rgba(248,251,254,0.94); box-shadow: 0 10px 34px rgba(18,41,77,0.12); }
        .nav-link-custom { position: relative; font-weight: 500; font-size: 0.98rem; padding: 8px 0; color: #173a69; transition: color .22s ease; }
        .nav-link-custom::after { content: ''; position: absolute; left: 0; right: 0; bottom: -4px; height: 2px; background: #1b6ce5; border-radius: 999px; transform: scaleX(0); transform-origin: center; transition: transform .25s ease; }
        .nav-link-custom:hover { color: #1b6ce5; }
        .nav-link-custom:hover::after, .nav-link-custom.active::after { transform: scaleX(1); }
        .nav-link-custom.active { color: #1b6ce5; }

        .btn-custom { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font-weight: 600; border-radius: 999px; padding: 12px 26px; transition: all .25s ease; border: none; cursor: pointer; white-space: nowrap; font-family: inherit; }
        .btn-custom:focus-visible { outline: 3px solid #59abff; outline-offset: 3px; }
        .btn-primary-custom { background: #1b6ce5; color: #fff; box-shadow: 0 12px 30px -8px rgba(27,108,229,0.5); }
        .btn-primary-custom:hover { background: #1556c8; transform: translateY(-2px); box-shadow: 0 18px 34px -8px rgba(27,108,229,0.62); }
        .btn-primary-custom:active { transform: translateY(0); }
        .btn-accent-custom { background: #ff6b3d; color: #fff; box-shadow: 0 12px 30px -8px rgba(255,107,61,0.42); }
        .btn-accent-custom:hover { background: #e8542a; transform: translateY(-2px); box-shadow: 0 16px 36px -8px rgba(255,107,61,0.56); }
        .btn-outline-custom { background: transparent; border: 1px solid #cddae7; color: #173a69; }
        .btn-outline-custom:hover { border-color: #1b6ce5; color: #1b6ce5; background: #eef7ff; }
        .btn-white-custom { background: #fff; color: #0b1c33; box-shadow: 0 10px 28px rgba(18,41,77,0.16); }
        .btn-white-custom:hover { transform: translateY(-2px); box-shadow: 0 16px 34px rgba(18,41,77,0.24); }
        .btn-lg-custom { padding: 15px 32px; font-size: 1.02rem; }
        .btn-sm-custom { padding: 8px 18px; font-size: 0.85rem; }

        .badge-custom { display: inline-flex; align-items: center; gap: 6px; padding: 6px 14px; border-radius: 999px; font-size: 0.8rem; font-weight: 600; letter-spacing: 0.02em; }
        .badge-brand-custom { background: #e3eff8; color: #1556c8; }
        .badge-accent-custom { background: #fff0e8; color: #e8542a; }
        .badge-gold-custom { background: #fff7e0; color: #9b6d0a; }
        .badge-jade-custom { background: #e0f7f4; color: #0f8f7a; }
        .badge-outline-custom { background: transparent; border: 1px solid #cddae7; color: #487099; }

        .card-custom { background: #fff; border-radius: 1.4rem; box-shadow: 0 18px 44px -18px rgba(18,41,77,0.18); border: 1px solid rgba(18,41,77,0.05); transition: all .25s ease; }
        .card-custom:hover { transform: translateY(-5px); box-shadow: 0 26px 52px -18px rgba(18,41,77,0.28); }
        .card-cover-custom { border-radius: 1.4rem 1.4rem 0 0; overflow: hidden; }
        .card-body-custom { padding: 22px 22px 26px; }
        .card-title-custom { font-size: 1.2rem; font-weight: 700; color: #0b1c33; line-height: 1.4; }
        .card-text-custom { color: #487099; font-size: 0.94rem; line-height: 1.75; }

        .section-label-custom { display: inline-flex; align-items: center; gap: 8px; text-transform: uppercase; letter-spacing: 0.1em; font-size: 0.75rem; font-weight: 700; color: #1b6ce5; background: #eef7ff; padding: 7px 16px; border-radius: 999px; margin-bottom: 18px; }
        .section-title-custom { font-size: clamp(1.8rem, 3.2vw, 2.4rem); font-weight: 800; color: #0b1c33; letter-spacing: -0.02em; line-height: 1.3; margin-bottom: 16px; }
        .section-desc-custom { font-size: 1.05rem; color: #487099; max-width: 760px; line-height: 1.8; }
        .divider-custom { height: 1px; background: linear-gradient(90deg, transparent, #dfeaf3 30%, #dfeaf3 70%, transparent); }

        .faq-item-custom { border-bottom: 1px solid #e5edf6; }
        .faq-answer-custom { max-height: 0; overflow: hidden; transition: max-height .35s ease, padding .3s ease; color: #487099; }
        .faq-item-custom.open .faq-answer-custom { max-height: 400px; padding-bottom: 22px; }
        .faq-toggle-custom { cursor: pointer; padding: 20px 0; display: flex; justify-content: space-between; align-items: center; font-weight: 700; color: #0b1c33; transition: color .2s; background: none; border: none; width: 100%; text-align: left; font-family: inherit; font-size: 1rem; }
        .faq-toggle-custom:hover { color: #1b6ce5; }
        .faq-icon-custom { font-size: 1.6rem; font-weight: 300; transition: transform .3s; color: #1b6ce5; flex-shrink: 0; margin-left: 12px; }
        .faq-item-custom.open .faq-icon-custom { transform: rotate(45deg); }

        .nav-mobile-custom { max-height: 0; overflow: hidden; transition: max-height .35s ease, padding .3s ease; }
        .nav-mobile-custom.open { max-height: 480px; }
        .hero-gradient-custom { background: linear-gradient(112deg, #0b1c33 0%, #12294d 52%, #173a69 100%); }
        .glass-hero-custom { background: rgba(11,28,51,0.38); backdrop-filter: blur(7px); -webkit-backdrop-filter: blur(7px); border: 1px solid rgba(255,255,255,0.2); border-radius: 2rem; }
        .text-shadow-hero-custom { text-shadow: 0 3px 16px rgba(11,28,51,0.42); }

        .plan-card-highlight { position: relative; border: 2px solid #1b6ce5; background: #fff; box-shadow: 0 24px 52px -16px rgba(27,108,229,0.28); }
        .plan-card-highlight::before { content: '最受欢迎'; position: absolute; top: -14px; left: 50%; transform: translateX(-50%); background: #1b6ce5; color: #fff; font-size: 0.75rem; font-weight: 700; padding: 4px 16px; border-radius: 999px; letter-spacing: 0.03em; }

        .sticky-bar { position: fixed; bottom: 0; left: 0; right: 0; z-index: 45; background: #0b1c33; color: #fff; padding: 14px 0; transform: translateY(100%); transition: transform .35s ease; box-shadow: 0 -8px 28px rgba(18,41,77,0.18); }
        .sticky-bar.show { transform: translateY(0); }

        ::selection { background: #1b6ce5; color: #fff; }
        @media (max-width: 1024px) {
            .container-custom { padding: 0 20px; }
        }
        @media (max-width: 768px) {
            .container-custom { padding: 0 14px; }
            .btn-custom { padding: 10px 18px; font-size: 0.9rem; }
            .btn-lg-custom { padding: 12px 22px; font-size: 0.95rem; }
            .glass-hero-custom { padding: 1rem; }
        }