/* roulang page: index */
:root {
            --ink: #13233d;
            --ink-soft: #52637c;
            --navy: #0b1427;
            --navy-2: #111e36;
            --blue: #2367d1;
            --blue-dark: #17499b;
            --cyan: #54d9e6;
            --pale: #edf5ff;
            --pale-2: #f7faff;
            --line: #dce6f2;
            --white: #ffffff;
            --shadow: 0 16px 40px rgba(24, 63, 110, .09);
            --shadow-hover: 0 20px 48px rgba(24, 63, 110, .15);
            --radius: 18px;
            --radius-sm: 12px;
            --ease: 220ms ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            color: var(--ink);
            background: var(--pale-2);
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--ease), background var(--ease), border-color var(--ease), transform var(--ease), box-shadow var(--ease);
        }

        a:hover {
            color: var(--blue);
        }

        button,
        input,
        select {
            font: inherit;
        }

        :focus-visible {
            outline: 3px solid rgba(84, 217, 230, .8);
            outline-offset: 3px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background: rgba(11, 20, 39, .97);
            border-bottom: 2px solid var(--cyan);
            box-shadow: 0 8px 26px rgba(4, 12, 28, .2);
        }

        .navbar {
            min-height: 76px;
            padding: 0;
        }

        .navbar-brand {
            display: inline-flex;
            align-items: center;
            gap: 11px;
            color: #fff !important;
            font-size: 1.06rem;
            font-weight: 800;
            letter-spacing: .01em;
            white-space: nowrap;
        }

        .brand-mark {
            width: 36px;
            height: 36px;
            display: inline-grid;
            place-items: center;
            color: var(--navy);
            background: var(--cyan);
            border-radius: 11px;
            box-shadow: 0 0 18px rgba(84, 217, 230, .35);
            font-size: 1.05rem;
        }

        .navbar-nav {
            gap: 5px;
        }

        .nav-link {
            position: relative;
            padding: 25px 15px !important;
            color: #b8c6dc !important;
            font-size: .94rem;
            font-weight: 600;
        }

        .nav-link::after {
            position: absolute;
            right: 15px;
            bottom: -2px;
            left: 15px;
            height: 2px;
            background: var(--cyan);
            box-shadow: 0 0 12px rgba(84, 217, 230, .8);
            content: "";
            opacity: 0;
            transform: scaleX(.35);
            transition: opacity var(--ease), transform var(--ease);
        }

        .nav-link:hover,
        .nav-link.active {
            color: #fff !important;
        }

        .nav-link:hover::after,
        .nav-link.active::after {
            opacity: 1;
            transform: scaleX(1);
        }

        .nav-action {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 42px;
            padding: 0 18px;
            color: var(--navy) !important;
            background: var(--cyan);
            border: 1px solid var(--cyan);
            border-radius: 10px;
            font-size: .9rem;
            font-weight: 800;
            box-shadow: 0 0 18px rgba(84, 217, 230, .18);
        }

        .nav-action:hover {
            color: var(--navy) !important;
            background: #86edf3;
            border-color: #86edf3;
            transform: translateY(-2px);
        }

        .navbar-toggler {
            padding: 8px 10px;
            border: 1px solid rgba(255,255,255,.25);
            border-radius: 9px;
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(84, 217, 230, .3);
        }

        .navbar-toggler-icon {
            filter: invert(1);
        }

        .hero {
            position: relative;
            overflow: hidden;
            padding: 92px 0 56px;
            background:
                linear-gradient(90deg, rgba(237,245,255,.98) 0%, rgba(247,250,255,.94) 57%, rgba(237,245,255,.85) 100%);
        }

        .hero::before {
            position: absolute;
            top: 0;
            right: 7%;
            width: 340px;
            height: 340px;
            border: 1px solid rgba(35, 103, 209, .12);
            border-radius: 50%;
            content: "";
        }

        .hero::after {
            position: absolute;
            top: 42px;
            right: 11%;
            width: 210px;
            height: 210px;
            border: 1px solid rgba(35, 103, 209, .11);
            border-radius: 50%;
            content: "";
        }

        .hero .container {
            position: relative;
            z-index: 1;
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 19px;
            color: var(--blue-dark);
            font-size: .82rem;
            font-weight: 800;
            letter-spacing: .08em;
        }

        .eyebrow::before {
            width: 28px;
            height: 2px;
            background: var(--blue);
            content: "";
        }

        .hero h1 {
            max-width: 730px;
            margin: 0 0 22px;
            color: var(--ink);
            font-size: clamp(2.45rem, 5vw, 4.7rem);
            font-weight: 900;
            letter-spacing: -.045em;
            line-height: 1.13;
        }

        .hero-copy {
            max-width: 690px;
            margin: 0;
            color: var(--ink-soft);
            font-size: 1.08rem;
            line-height: 1.9;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 31px;
        }

        .btn-primary-custom,
        .btn-outline-custom {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 49px;
            padding: 0 22px;
            border-radius: 11px;
            font-weight: 800;
            transition: all var(--ease);
        }

        .btn-primary-custom {
            color: #fff;
            background: var(--blue);
            border: 1px solid var(--blue);
            box-shadow: 0 9px 20px rgba(35, 103, 209, .2);
        }

        .btn-primary-custom:hover {
            color: #fff;
            background: var(--blue-dark);
            border-color: var(--blue-dark);
            box-shadow: 0 13px 25px rgba(35, 103, 209, .28);
            transform: translateY(-2px);
        }

        .btn-outline-custom {
            color: var(--blue-dark);
            background: transparent;
            border: 1px solid #a9c2e2;
        }

        .btn-outline-custom:hover {
            color: var(--blue-dark);
            background: #e4efff;
            border-color: var(--blue);
            transform: translateY(-2px);
        }

        .hero-pulse {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            margin-top: 39px;
            color: var(--ink-soft);
            font-size: .88rem;
        }

        .hero-pulse strong {
            display: block;
            color: var(--ink);
            font-size: 1.15rem;
            line-height: 1.3;
        }

        .hero-pulse span {
            display: block;
            margin-top: 3px;
        }

        .hero-panel {
            position: relative;
            min-height: 310px;
            padding: 28px;
            background: var(--navy);
            border: 1px solid rgba(84, 217, 230, .4);
            border-radius: 22px;
            box-shadow: 0 26px 50px rgba(7, 27, 61, .2);
        }

        .hero-panel-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-bottom: 19px;
            border-bottom: 1px solid rgba(255,255,255,.13);
            color: #d9e5f7;
            font-size: .87rem;
        }

        .live-dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            margin-right: 7px;
            background: var(--cyan);
            border-radius: 50%;
            box-shadow: 0 0 11px var(--cyan);
        }

        .hero-index {
            margin: 25px 0 20px;
            color: #fff;
            font-size: 1.65rem;
            font-weight: 800;
            line-height: 1.35;
        }

        .hero-panel-list {
            display: grid;
            gap: 11px;
        }

        .hero-panel-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 14px;
            color: #c4d2e8;
            background: rgba(255,255,255,.06);
            border-left: 3px solid var(--cyan);
            border-radius: 8px;
            font-size: .88rem;
        }

        .hero-panel-item b {
            color: #fff;
            font-weight: 700;
        }

        .status-bar {
            padding: 15px 0;
            color: #60718a;
            background: #fff;
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
            font-size: .88rem;
        }

        .status-bar strong {
            color: var(--blue-dark);
        }

        .section {
            padding: 92px 0;
        }

        .section-soft {
            background: var(--pale);
        }

        .section-heading {
            max-width: 690px;
            margin-bottom: 38px;
        }

        .section-heading h2 {
            margin: 0 0 12px;
            font-size: clamp(1.8rem, 3vw, 2.65rem);
            font-weight: 850;
            letter-spacing: -.025em;
            line-height: 1.25;
        }

        .section-heading p {
            margin: 0;
            color: var(--ink-soft);
            line-height: 1.85;
        }

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

        .metric-card {
            padding: 25px 23px;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow);
        }

        .metric-value {
            color: var(--blue);
            font-size: 2.05rem;
            font-weight: 900;
            line-height: 1.1;
        }

        .metric-label {
            margin-top: 9px;
            color: var(--ink);
            font-weight: 800;
        }

        .metric-note {
            margin-top: 7px;
            color: var(--ink-soft);
            font-size: .84rem;
            line-height: 1.6;
        }

        .matrix {
            display: grid;
            grid-template-columns: 1.22fr .78fr;
            gap: 18px;
        }

        .matrix-main,
        .matrix-small {
            position: relative;
            overflow: hidden;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            transition: all var(--ease);
        }

        .matrix-main:hover,
        .matrix-small:hover,
        .content-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .matrix-main {
            min-height: 370px;
            padding: 32px;
            background: linear-gradient(135deg, #fff 0%, #eef6ff 100%);
        }

        .matrix-main::after {
            position: absolute;
            right: -50px;
            bottom: -80px;
            width: 250px;
            height: 250px;
            border: 26px solid rgba(35, 103, 209, .08);
            border-radius: 50%;
            content: "";
        }

        .matrix-stack {
            display: grid;
            gap: 18px;
        }

        .matrix-small {
            min-height: 176px;
            padding: 25px;
        }

        .matrix-kicker {
            display: inline-block;
            margin-bottom: 18px;
            padding: 5px 10px;
            color: #216d89;
            background: #dff7fa;
            border-radius: 6px;
            font-size: .76rem;
            font-weight: 800;
        }

        .matrix h3 {
            position: relative;
            z-index: 1;
            margin: 0 0 10px;
            font-size: 1.35rem;
            font-weight: 850;
        }

        .matrix p {
            position: relative;
            z-index: 1;
            max-width: 480px;
            margin: 0 0 20px;
            color: var(--ink-soft);
            font-size: .91rem;
            line-height: 1.75;
        }

        .matrix-link {
            position: relative;
            z-index: 1;
            color: var(--blue-dark);
            font-size: .9rem;
            font-weight: 800;
        }

        .matrix-link:hover {
            text-decoration: underline;
            text-decoration-color: var(--cyan);
            text-decoration-thickness: 2px;
            text-underline-offset: 5px;
        }

        .comparison-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 18px;
        }

        .compare-card {
            padding: 30px;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius);
        }

        .compare-card.highlight {
            background: var(--navy);
            border-color: var(--navy);
            color: #fff;
        }

        .compare-tag {
            display: inline-block;
            margin-bottom: 17px;
            padding: 5px 10px;
            color: var(--ink-soft);
            background: #edf2f8;
            border-radius: 6px;
            font-size: .76rem;
            font-weight: 800;
        }

        .highlight .compare-tag {
            color: var(--cyan);
            background: rgba(84, 217, 230, .12);
        }

        .compare-card h3 {
            margin-bottom: 12px;
            font-size: 1.3rem;
            font-weight: 850;
        }

        .compare-card p {
            margin-bottom: 20px;
            color: var(--ink-soft);
            font-size: .91rem;
        }

        .highlight p {
            color: #bdcbe0;
        }

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

        .compare-list li {
            position: relative;
            padding-left: 25px;
            color: var(--ink);
            font-size: .9rem;
        }

        .highlight .compare-list li {
            color: #dce7f6;
        }

        .compare-list li::before {
            position: absolute;
            top: 10px;
            left: 0;
            width: 8px;
            height: 8px;
            background: var(--blue);
            border-radius: 50%;
            content: "";
        }

        .highlight .compare-list li::before {
            background: var(--cyan);
            box-shadow: 0 0 9px rgba(84, 217, 230, .7);
        }

        .theme-grid {
            display: grid;
            grid-template-columns: 1.1fr .9fr .9fr;
            gap: 16px;
        }

        .theme-card {
            min-height: 210px;
            padding: 26px;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow);
        }

        .theme-card:first-child {
            grid-row: span 2;
            background: var(--blue);
            color: #fff;
        }

        .theme-number {
            color: var(--blue);
            font-size: .82rem;
            font-weight: 900;
        }

        .theme-card:first-child .theme-number {
            color: var(--cyan);
        }

        .theme-card h3 {
            margin: 28px 0 10px;
            font-size: 1.2rem;
            font-weight: 850;
        }

        .theme-card p {
            margin: 0;
            color: var(--ink-soft);
            font-size: .88rem;
            line-height: 1.75;
        }

        .theme-card:first-child p {
            color: #d8e5f9;
        }

        .topic-label {
            display: inline-block;
            margin-top: 22px;
            padding: 5px 10px;
            color: var(--blue-dark);
            background: #e7f0ff;
            border-radius: 6px;
            font-size: .77rem;
            font-weight: 800;
        }

        .theme-card:first-child .topic-label {
            color: var(--navy);
            background: var(--cyan);
        }

        .news-layout {
            display: grid;
            grid-template-columns: 1.35fr .65fr;
            gap: 22px;
        }

        .content-list {
            display: grid;
            gap: 12px;
        }

        .content-card {
            display: grid;
            grid-template-columns: 145px 1fr auto;
            align-items: center;
            gap: 18px;
            padding: 15px;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius-sm);
            box-shadow: 0 8px 22px rgba(24, 63, 110, .05);
            transition: all var(--ease);
        }

        .thumb {
            position: relative;
            display: grid;
            place-items: center;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            color: var(--cyan);
            background: linear-gradient(135deg, #132b56, #2869b5);
            border-radius: 9px;
            font-size: 1.45rem;
        }

        .thumb::before {
            position: absolute;
            width: 58%;
            height: 58%;
            border: 1px solid rgba(255,255,255,.3);
            border-radius: 50%;
            content: "";
        }

        .thumb span {
            position: relative;
            z-index: 1;
        }

        .content-card h3 {
            margin: 0 0 6px;
            font-size: 1rem;
            font-weight: 800;
            line-height: 1.4;
        }

        .content-meta {
            color: var(--ink-soft);
            font-size: .8rem;
        }

        .content-tag {
            display: inline-block;
            margin-right: 8px;
            color: var(--blue-dark);
            font-size: .76rem;
            font-weight: 800;
        }

        .content-arrow {
            color: var(--blue);
            font-size: 1.2rem;
            font-weight: 700;
        }

        .news-aside {
            padding: 26px;
            background: var(--navy);
            border-radius: var(--radius);
            color: #fff;
        }

        .news-aside h3 {
            margin: 0 0 14px;
            font-size: 1.25rem;
        }

        .news-aside p {
            color: #bac9de;
            font-size: .88rem;
            line-height: 1.75;
        }

        .aside-links {
            display: grid;
            gap: 10px;
            margin-top: 21px;
        }

        .aside-links a {
            padding: 11px 13px;
            color: #dce8f8;
            background: rgba(255,255,255,.07);
            border-left: 2px solid var(--cyan);
            border-radius: 6px;
            font-size: .85rem;
        }

        .aside-links a:hover {
            color: #fff;
            background: rgba(84, 217, 230, .13);
        }

        .accordion {
            display: grid;
            gap: 11px;
        }

        .accordion-item {
            overflow: hidden;
            background: #fff;
            border: 1px solid var(--line) !important;
            border-radius: var(--radius-sm) !important;
            box-shadow: 0 6px 18px rgba(24, 63, 110, .04);
        }

        .accordion-button {
            padding: 20px 22px;
            color: var(--ink);
            background: #fff;
            font-weight: 800;
            box-shadow: none !important;
        }

        .accordion-button:not(.collapsed) {
            color: var(--blue-dark);
            background: #f0f6ff;
        }

        .accordion-button::after {
            background-size: 15px;
        }

        .accordion-body {
            padding: 0 22px 21px;
            color: var(--ink-soft);
            font-size: .9rem;
            line-height: 1.8;
        }

        .filter-section {
            background: #eaf3ff;
        }

        .filter-box {
            padding: 32px;
            background: #fff;
            border: 1px solid #cbdcf0;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }

        .filter-box h2 {
            margin: 0 0 9px;
            font-size: 1.65rem;
            font-weight: 850;
        }

        .filter-box p {
            margin: 0 0 23px;
            color: var(--ink-soft);
            font-size: .9rem;
        }

        .form-label {
            margin-bottom: 7px;
            color: var(--ink);
            font-size: .86rem;
            font-weight: 800;
        }

        .form-control,
        .form-select {
            min-height: 49px;
            color: var(--ink);
            background-color: #fbfdff;
            border: 1px solid #cbd9e9;
            border-radius: 9px;
        }

        .form-control::placeholder {
            color: #8c9bb0;
        }

        .form-control:focus,
        .form-select:focus {
            color: var(--ink);
            background: #fff;
            border-color: var(--blue);
            box-shadow: 0 0 0 4px rgba(35, 103, 209, .12);
        }

        .form-note {
            margin-top: 12px;
            color: #73839a;
            font-size: .78rem;
        }

        .site-footer {
            padding: 55px 0 24px;
            color: #b9c8dc;
            background: var(--navy);
            border-top: 2px solid rgba(84, 217, 230, .55);
        }

        .footer-brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
            color: #fff;
            font-size: 1.05rem;
            font-weight: 850;
        }

        .footer-brand .brand-mark {
            width: 30px;
            height: 30px;
            border-radius: 8px;
            font-size: .88rem;
        }

        .footer-copy {
            max-width: 330px;
            margin: 0;
            color: #91a4be;
            font-size: .84rem;
            line-height: 1.8;
        }

        .footer-title {
            margin: 2px 0 14px;
            color: #fff;
            font-size: .88rem;
            font-weight: 800;
        }

        .footer-links {
            display: grid;
            gap: 8px;
            margin: 0;
            padding: 0;
            list-style: none;
            font-size: .84rem;
        }

        .footer-links a {
            color: #aebed3;
        }

        .footer-links a:hover {
            color: var(--cyan);
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            gap: 18px;
            margin-top: 40px;
            padding-top: 18px;
            border-top: 1px solid rgba(255,255,255,.12);
            color: #8396b0;
            font-size: .78rem;
        }

        @media (max-width: 991.98px) {
            .navbar {
                min-height: 68px;
            }

            .navbar-collapse {
                padding: 11px 0 18px;
            }

            .nav-link {
                padding: 13px 8px !important;
                border-bottom: 1px solid rgba(255,255,255,.08);
            }

            .nav-link::after {
                right: 8px;
                bottom: -1px;
                left: 8px;
            }

            .nav-action {
                margin-top: 14px;
            }

            .hero {
                padding-top: 68px;
            }

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

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

            .theme-card:first-child {
                grid-row: auto;
                grid-column: span 2;
            }
        }

        @media (max-width: 767.98px) {
            .section {
                padding: 65px 0;
            }

            .hero h1 {
                font-size: 2.55rem;
            }

            .hero-panel {
                min-height: 0;
                margin-top: 35px;
            }

            .matrix,
            .comparison-wrap,
            .news-layout {
                grid-template-columns: 1fr;
            }

            .matrix-main {
                min-height: 0;
            }

            .content-card {
                grid-template-columns: 104px 1fr auto;
                gap: 12px;
            }

            .content-card h3 {
                font-size: .92rem;
            }

            .news-aside {
                margin-top: 3px;
            }

            .filter-box {
                padding: 23px;
            }
        }

        @media (max-width: 575.98px) {
            .container {
                padding-right: 18px;
                padding-left: 18px;
            }

            .navbar-brand {
                font-size: .91rem;
            }

            .brand-mark {
                width: 32px;
                height: 32px;
            }

            .hero {
                padding: 54px 0 42px;
            }

            .hero h1 {
                font-size: 2.18rem;
                letter-spacing: -.03em;
            }

            .hero-copy {
                font-size: .98rem;
            }

            .hero-actions {
                display: grid;
            }

            .hero-actions a {
                width: 100%;
            }

            .hero-pulse {
                gap: 15px;
            }

            .metrics-grid,
            .theme-grid {
                grid-template-columns: 1fr;
            }

            .theme-card:first-child {
                grid-column: auto;
            }

            .matrix-main,
            .matrix-small,
            .compare-card {
                padding: 23px;
            }

            .content-card {
                grid-template-columns: 88px 1fr;
            }

            .content-arrow {
                display: none;
            }

            .footer-bottom {
                flex-direction: column;
                gap: 7px;
            }
        }

/* roulang page: category1 */
:root {
      --ink: #13233d;
      --ink-soft: #52637c;
      --navy: #0b1427;
      --navy-2: #111e36;
      --blue: #2367d1;
      --blue-dark: #17499b;
      --cyan: #54d9e6;
      --pale: #edf5ff;
      --pale-2: #f7faff;
      --line: #dce6f2;
      --white: #ffffff;
      --success: #167a62;
      --warning: #a86711;
      --shadow: 0 16px 40px rgba(24, 63, 110, .09);
      --shadow-hover: 0 20px 48px rgba(24, 63, 110, .15);
      --radius: 18px;
      --radius-sm: 12px;
      --ease: 220ms ease;
      --bs-primary: #2367d1;
      --bs-border-color: #dce6f2;
      --bs-body-color: #13233d;
      --bs-body-bg: #f7faff;
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      color: var(--ink);
      background: var(--pale-2);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
      font-size: 16px;
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color var(--ease), background var(--ease), border-color var(--ease), transform var(--ease), box-shadow var(--ease);
    }

    a:hover { color: var(--blue); }
    img { display: block; max-width: 100%; }
    button, input, select { font: inherit; }
    button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible {
      outline: 3px solid rgba(84, 217, 230, .65);
      outline-offset: 3px;
    }

    .container { max-width: 1180px; }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 1030;
      background: rgba(11, 20, 39, .97);
      border-bottom: 2px solid var(--cyan);
      box-shadow: 0 8px 26px rgba(4, 12, 28, .2);
    }

    .navbar { min-height: 76px; padding: 0; }
    .navbar-brand {
      display: inline-flex;
      align-items: center;
      gap: 11px;
      color: #fff !important;
      font-size: 1.06rem;
      font-weight: 800;
      letter-spacing: .01em;
      white-space: nowrap;
    }

    .brand-mark {
      width: 36px;
      height: 36px;
      display: inline-grid;
      place-items: center;
      color: var(--navy);
      background: var(--cyan);
      border-radius: 11px;
      box-shadow: 0 0 18px rgba(84, 217, 230, .35);
      font-size: 1.05rem;
      line-height: 1;
    }

    .navbar-nav { gap: 5px; }
    .nav-link {
      position: relative;
      padding: 25px 15px !important;
      color: #b8c6dc !important;
      font-size: .94rem;
      font-weight: 600;
    }

    .nav-link::after {
      position: absolute;
      right: 15px;
      bottom: -2px;
      left: 15px;
      height: 2px;
      background: var(--cyan);
      box-shadow: 0 0 12px rgba(84, 217, 230, .8);
      content: "";
      opacity: 0;
      transform: scaleX(.35);
      transition: opacity var(--ease), transform var(--ease);
    }

    .nav-link:hover, .nav-link.active { color: #fff !important; }
    .nav-link:hover::after, .nav-link.active::after { opacity: 1; transform: scaleX(1); }

    .nav-action, .btn-primary-custom {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 44px;
      padding: 0 18px;
      border: 1px solid var(--cyan);
      border-radius: 10px;
      font-size: .92rem;
      font-weight: 800;
    }

    .nav-action {
      color: var(--navy) !important;
      background: var(--cyan);
      box-shadow: 0 0 18px rgba(84, 217, 230, .18);
    }

    .nav-action:hover {
      color: var(--navy) !important;
      background: #86edf3;
      border-color: #86edf3;
      transform: translateY(-2px);
    }

    .navbar-toggler {
      padding: 8px 10px;
      border: 1px solid rgba(255,255,255,.25);
      border-radius: 9px;
    }

    .navbar-toggler:focus { box-shadow: 0 0 0 3px rgba(84, 217, 230, .3); }
    .navbar-toggler-icon { filter: invert(1); }

    .page-hero {
      position: relative;
      overflow: hidden;
      padding: 76px 0 50px;
      background: linear-gradient(110deg, #edf5ff 0%, #f9fbff 58%, #e9f5ff 100%);
      border-bottom: 1px solid var(--line);
    }

    .page-hero::before {
      position: absolute;
      top: -115px;
      right: 8%;
      width: 360px;
      height: 360px;
      border: 1px solid rgba(35, 103, 209, .14);
      border-radius: 50%;
      content: "";
    }

    .page-hero::after {
      position: absolute;
      right: 17%;
      bottom: -68px;
      width: 200px;
      height: 200px;
      border: 1px solid rgba(84, 217, 230, .65);
      border-radius: 50%;
      content: "";
    }

    .page-hero .container { position: relative; z-index: 1; }
    .breadcrumb-line {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 8px;
      margin-bottom: 22px;
      color: var(--ink-soft);
      font-size: .88rem;
    }

    .breadcrumb-line a:hover { color: var(--blue-dark); text-decoration: underline; }
    .breadcrumb-sep { color: #91a3bd; }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 14px;
      color: var(--blue-dark);
      font-size: .8rem;
      font-weight: 800;
      letter-spacing: .08em;
    }

    .eyebrow::before {
      width: 28px;
      height: 2px;
      background: var(--blue);
      content: "";
    }

    h1, h2, h3, p { margin-top: 0; }
    .page-hero h1 {
      max-width: 790px;
      margin-bottom: 16px;
      font-size: clamp(2.25rem, 4.8vw, 4.25rem);
      font-weight: 900;
      letter-spacing: 0;
      line-height: 1.18;
    }

    .hero-copy {
      max-width: 760px;
      margin-bottom: 27px;
      color: var(--ink-soft);
      font-size: 1.06rem;
      line-height: 1.9;
    }

    .hero-summary {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      padding: 10px 14px;
      color: var(--blue-dark);
      background: rgba(255,255,255,.8);
      border: 1px solid rgba(35, 103, 209, .16);
      border-radius: var(--radius-sm);
      box-shadow: 0 10px 24px rgba(31, 87, 150, .07);
      font-size: .89rem;
      font-weight: 700;
    }

    .pulse-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--cyan);
      box-shadow: 0 0 0 5px rgba(84,217,230,.18);
    }

    .filter-wrap {
      position: relative;
      z-index: 3;
      margin-top: -21px;
    }

    .filter-panel {
      padding: 20px;
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      box-shadow: var(--shadow);
    }

    .filter-label {
      display: block;
      margin-bottom: 7px;
      color: var(--ink);
      font-size: .83rem;
      font-weight: 800;
    }

    .form-control, .form-select {
      min-height: 46px;
      color: var(--ink);
      background-color: #fbfdff;
      border: 1px solid #cfdceb;
      border-radius: 10px;
      box-shadow: none;
    }

    .form-control::placeholder { color: #8495ab; }
    .form-control:focus, .form-select:focus {
      color: var(--ink);
      background-color: #fff;
      border-color: var(--blue);
      box-shadow: 0 0 0 4px rgba(35,103,209,.12);
    }

    .filter-button {
      width: 100%;
      min-height: 46px;
      color: #fff;
      background: var(--blue);
      border: 1px solid var(--blue);
      border-radius: 10px;
      font-weight: 800;
      transition: all var(--ease);
    }

    .filter-button:hover {
      background: var(--blue-dark);
      border-color: var(--blue-dark);
      box-shadow: 0 10px 18px rgba(35,103,209,.22);
      transform: translateY(-2px);
    }

    .filter-button:active { transform: translateY(0); }

    main { padding: 58px 0 78px; }
    .section-kicker {
      margin-bottom: 8px;
      color: var(--blue-dark);
      font-size: .8rem;
      font-weight: 800;
      letter-spacing: .08em;
    }

    .section-title {
      margin-bottom: 10px;
      font-size: clamp(1.65rem, 2.8vw, 2.45rem);
      font-weight: 900;
      line-height: 1.3;
    }

    .section-copy {
      max-width: 670px;
      margin-bottom: 0;
      color: var(--ink-soft);
    }

    .index-summary {
      display: grid;
      grid-template-columns: 1.1fr .9fr;
      gap: 1px;
      margin: 34px 0 42px;
      overflow: hidden;
      background: var(--line);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      box-shadow: 0 12px 32px rgba(24,63,110,.06);
    }

    .summary-item {
      padding: 22px 25px;
      background: var(--white);
    }

    .summary-item strong {
      display: block;
      margin-bottom: 3px;
      color: var(--blue-dark);
      font-size: 1.45rem;
      font-weight: 900;
      line-height: 1.2;
    }

    .summary-item span { color: var(--ink-soft); font-size: .9rem; }

    .content-layout {
      display: grid;
      grid-template-columns: minmax(0, 1fr) 270px;
      gap: 34px;
      align-items: start;
    }

    .content-list { display: grid; gap: 16px; }

    .feature-entry {
      position: relative;
      display: grid;
      grid-template-columns: 226px minmax(0, 1fr);
      gap: 24px;
      padding: 18px;
      overflow: hidden;
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      box-shadow: var(--shadow);
      transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease);
    }

    .feature-entry:hover {
      border-color: rgba(35,103,209,.35);
      box-shadow: var(--shadow-hover);
      transform: translateY(-3px);
    }

    .thumb {
      position: relative;
      min-height: 158px;
      overflow: hidden;
      background: linear-gradient(135deg, #183a70 0%, #276bce 52%, #59c8de 100%);
      border-radius: var(--radius-sm);
    }

    .thumb::before {
      position: absolute;
      right: -14%;
      bottom: -38%;
      width: 156px;
      height: 156px;
      border: 1px solid rgba(255,255,255,.42);
      border-radius: 50%;
      content: "";
    }

    .thumb::after {
      position: absolute;
      top: 14px;
      left: 14px;
      width: 53px;
      height: 6px;
      background: rgba(255,255,255,.52);
      border-radius: 8px;
      box-shadow: 0 14px 0 rgba(255,255,255,.28), 0 28px 0 rgba(255,255,255,.16);
      content: "";
    }

    .thumb.alt-a { background: linear-gradient(135deg, #173b6d, #3d79cb 54%, #8bdde4); }
    .thumb.alt-b { background: linear-gradient(135deg, #1c3157, #3c66ac 55%, #5dc7d6); }
    .thumb.alt-c { background: linear-gradient(135deg, #153868, #3273b8 55%, #71d8e2); }
    .thumb.alt-d { background: linear-gradient(135deg, #1b2a50, #2763bb 58%, #59b8e6); }

    .play-mark {
      position: absolute;
      right: 15px;
      bottom: 15px;
      width: 42px;
      height: 42px;
      display: grid;
      place-items: center;
      color: var(--navy);
      background: rgba(255,255,255,.92);
      border-radius: 50%;
      box-shadow: 0 8px 18px rgba(4,20,52,.2);
      font-size: .88rem;
      line-height: 1;
    }

    .entry-content { min-width: 0; padding: 2px 3px 2px 0; }
    .entry-top, .entry-meta {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 8px;
    }

    .entry-top { margin-bottom: 10px; }
    .entry-number {
      color: var(--blue-dark);
      font-size: .8rem;
      font-weight: 900;
    }

    .tag {
      display: inline-flex;
      align-items: center;
      min-height: 25px;
      padding: 2px 9px;
      color: var(--blue-dark);
      background: #eaf3ff;
      border: 1px solid #d5e8ff;
      border-radius: 999px;
      font-size: .75rem;
      font-weight: 800;
      line-height: 1.2;
    }

    .tag.cyan {
      color: #16707d;
      background: #e8fbfd;
      border-color: #c9eff2;
    }

    .entry-title {
      margin-bottom: 8px;
      font-size: 1.28rem;
      font-weight: 900;
      line-height: 1.4;
    }

    .entry-title a:hover { color: var(--blue); text-decoration: underline; text-decoration-thickness: 1px; }
    .entry-text {
      margin-bottom: 14px;
      color: var(--ink-soft);
      font-size: .92rem;
      line-height: 1.75;
    }

    .entry-meta {
      justify-content: space-between;
      color: #6a7c93;
      font-size: .8rem;
    }

    .entry-link {
      color: var(--blue-dark);
      font-weight: 800;
    }

    .entry-link:hover { color: var(--blue); text-decoration: underline; }

    .compact-entry {
      display: grid;
      grid-template-columns: 46px minmax(0, 1fr) auto;
      gap: 16px;
      align-items: center;
      padding: 19px 20px;
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: var(--radius-sm);
      transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
    }

    .compact-entry:hover {
      border-color: rgba(35,103,209,.34);
      box-shadow: 0 12px 28px rgba(24,63,110,.08);
      transform: translateX(3px);
    }

    .compact-no {
      width: 46px;
      height: 46px;
      display: grid;
      place-items: center;
      color: var(--blue-dark);
      background: var(--pale);
      border-radius: 10px;
      font-size: .87rem;
      font-weight: 900;
    }

    .compact-main { min-width: 0; }
    .compact-title {
      display: block;
      margin-bottom: 5px;
      font-size: 1rem;
      font-weight: 850;
      line-height: 1.45;
    }

    .compact-title:hover { color: var(--blue); }
    .compact-meta { color: var(--ink-soft); font-size: .82rem; }

    .aside-index {
      position: sticky;
      top: 102px;
      padding: 22px;
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      box-shadow: 0 12px 32px rgba(24,63,110,.06);
    }

    .aside-title {
      margin-bottom: 14px;
      font-size: 1rem;
      font-weight: 900;
    }

    .index-nav {
      display: grid;
      gap: 4px;
      margin: 0;
      padding: 0;
      list-style: none;
    }

    .index-nav a {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 8px;
      padding: 10px 0;
      color: var(--ink-soft);
      border-bottom: 1px solid #eef3f9;
      font-size: .88rem;
      font-weight: 700;
    }

    .index-nav li:last-child a { border-bottom: 0; }
    .index-nav a:hover { color: var(--blue-dark); padding-left: 4px; }
    .index-count {
      color: #6e83a0;
      font-size: .75rem;
      font-variant-numeric: tabular-nums;
    }

    .aside-note {
      margin-top: 20px;
      padding: 14px;
      color: var(--ink-soft);
      background: var(--pale-2);
      border-left: 3px solid var(--cyan);
      font-size: .82rem;
      line-height: 1.7;
    }

    .pagination {
      gap: 7px;
      margin: 34px 0 0;
    }

    .page-link {
      min-width: 42px;
      min-height: 42px;
      display: grid;
      place-items: center;
      color: var(--blue-dark);
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: 9px !important;
      font-weight: 800;
      box-shadow: none;
    }

    .page-link:hover {
      color: #fff;
      background: var(--blue);
      border-color: var(--blue);
    }

    .page-item.active .page-link {
      color: #fff;
      background: var(--blue-dark);
      border-color: var(--blue-dark);
    }

    .page-item.disabled .page-link { color: #a2b0c3; background: #f3f6fa; }

    .browse-note {
      display: grid;
      grid-template-columns: auto minmax(0, 1fr) auto;
      gap: 22px;
      align-items: center;
      margin-top: 72px;
      padding: 27px 30px;
      color: #e9f2ff;
      background: var(--navy-2);
      border: 1px solid rgba(84,217,230,.24);
      border-radius: var(--radius);
      box-shadow: 0 18px 36px rgba(10,22,48,.13);
    }

    .browse-icon {
      width: 50px;
      height: 50px;
      display: grid;
      place-items: center;
      color: var(--navy);
      background: var(--cyan);
      border-radius: 13px;
      font-size: 1.2rem;
    }

    .browse-note h2 {
      margin-bottom: 3px;
      color: #fff;
      font-size: 1.18rem;
      font-weight: 900;
    }

    .browse-note p {
      margin: 0;
      color: #b6c7df;
      font-size: .9rem;
    }

    .btn-primary-custom {
      color: var(--navy) !important;
      background: var(--cyan);
      border-color: var(--cyan);
      white-space: nowrap;
    }

    .btn-primary-custom:hover {
      color: var(--navy) !important;
      background: #89eff4;
      border-color: #89eff4;
      transform: translateY(-2px);
    }

    .faq-section { margin-top: 70px; }
    .faq-intro { margin-bottom: 22px; }

    .accordion {
      overflow: hidden;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      box-shadow: 0 12px 30px rgba(24,63,110,.06);
    }

    .accordion-item {
      overflow: hidden;
      background: var(--white);
      border: 0;
      border-bottom: 1px solid var(--line);
    }

    .accordion-item:last-child { border-bottom: 0; }

    .accordion-button {
      padding: 20px 22px;
      color: var(--ink);
      background: var(--white);
      box-shadow: none;
      font-size: .98rem;
      font-weight: 850;
      line-height: 1.55;
    }

    .accordion-button:not(.collapsed) {
      color: var(--blue-dark);
      background: #f1f7ff;
      box-shadow: inset 3px 0 0 var(--cyan);
    }

    .accordion-button:focus { z-index: 2; border-color: transparent; box-shadow: inset 3px 0 0 var(--cyan), 0 0 0 3px rgba(35,103,209,.13); }
    .accordion-button::after { background-size: 1rem; }
    .accordion-body { padding: 0 22px 21px; color: var(--ink-soft); background: #f1f7ff; font-size: .92rem; }

    .site-footer {
      padding: 55px 0 22px;
      color: #b7c5d9;
      background: var(--navy);
      border-top: 2px solid rgba(84,217,230,.75);
    }

    .footer-brand {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 14px;
      color: #fff !important;
      font-size: 1.05rem;
      font-weight: 900;
    }

    .footer-copy {
      max-width: 400px;
      margin: 0;
      color: #94a8c4;
      font-size: .9rem;
      line-height: 1.8;
    }

    .footer-title {
      margin-bottom: 13px;
      color: #fff;
      font-size: .9rem;
      font-weight: 900;
    }

    .footer-links {
      display: grid;
      gap: 8px;
      margin: 0;
      padding: 0;
      list-style: none;
    }

    .footer-links a {
      color: #aabbd2;
      font-size: .88rem;
    }

    .footer-links a:hover { color: var(--cyan); text-decoration: underline; }
    .footer-bottom {
      display: flex;
      justify-content: space-between;
      gap: 14px;
      margin-top: 42px;
      padding-top: 18px;
      color: #7186a5;
      border-top: 1px solid rgba(172,195,224,.15);
      font-size: .8rem;
    }

    @media (max-width: 991.98px) {
      .navbar { min-height: 68px; }
      .navbar-collapse {
        padding: 10px 0 18px;
        border-top: 1px solid rgba(255,255,255,.12);
      }
      .navbar-nav { margin: 5px 0 13px !important; }
      .nav-link { padding: 12px 8px !important; }
      .nav-link::after { right: auto; bottom: 4px; left: 8px; width: 34px; }
      .nav-action { width: 100%; }
      .page-hero { padding: 58px 0 42px; }
      .content-layout { grid-template-columns: 1fr; }
      .aside-index { position: static; order: -1; }
      .index-nav { grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 18px; }
      .browse-note { grid-template-columns: auto minmax(0, 1fr); }
      .browse-note .btn-primary-custom { grid-column: 2; justify-self: start; }
    }

    @media (max-width: 767.98px) {
      .page-hero h1 { font-size: 2.25rem; }
      .filter-panel { padding: 17px; }
      main { padding: 44px 0 60px; }
      .index-summary { grid-template-columns: 1fr; }
      .feature-entry { grid-template-columns: 1fr; gap: 16px; padding: 14px; }
      .thumb { min-height: 190px; }
      .compact-entry { grid-template-columns: 42px minmax(0, 1fr); gap: 12px; padding: 16px; }
      .compact-entry .entry-link { grid-column: 2; }
      .compact-no { width: 42px; height: 42px; }
      .browse-note { grid-template-columns: 1fr; gap: 15px; padding: 24px; }
      .browse-note .btn-primary-custom { grid-column: auto; justify-self: stretch; }
      .browse-icon { width: 45px; height: 45px; }
    }

    @media (max-width: 575.98px) {
      body { font-size: 15px; }
      .container { padding-right: 18px; padding-left: 18px; }
      .navbar-brand { max-width: calc(100% - 64px); font-size: .92rem; }
      .brand-mark { width: 32px; height: 32px; border-radius: 9px; }
      .page-hero { padding-top: 42px; }
      .page-hero h1 { font-size: 2rem; }
      .hero-copy { font-size: .96rem; }
      .hero-summary { align-items: flex-start; font-size: .8rem; }
      .index-nav { grid-template-columns: 1fr; }
      .summary-item { padding: 19px; }
      .entry-title { font-size: 1.13rem; }
      .entry-meta { align-items: flex-start; flex-direction: column; gap: 4px; }
      .accordion-button { padding: 17px; font-size: .92rem; }
      .accordion-body { padding: 0 17px 17px; }
      .footer-bottom { flex-direction: column; margin-top: 32px; }
    }

/* roulang page: category2 */
:root {
      --ink: #13233d;
      --ink-soft: #52637c;
      --navy: #0b1427;
      --navy-2: #111e36;
      --blue: #2367d1;
      --blue-dark: #17499b;
      --cyan: #54d9e6;
      --pale: #edf5ff;
      --pale-2: #f7faff;
      --line: #dce6f2;
      --white: #ffffff;
      --success: #247a62;
      --warning: #b9771f;
      --purple: #6d5bd0;
      --shadow: 0 16px 40px rgba(24, 63, 110, .09);
      --shadow-hover: 0 20px 48px rgba(24, 63, 110, .15);
      --radius: 18px;
      --radius-sm: 12px;
      --ease: 220ms ease;
      --bs-primary: #2367d1;
      --bs-primary-rgb: 35, 103, 209;
      --bs-border-color: #dce6f2;
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      color: var(--ink);
      background: var(--pale-2);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
      font-size: 16px;
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }
    img { display: block; max-width: 100%; }
    a {
      color: inherit;
      text-decoration: none;
      transition: color var(--ease), background var(--ease), border-color var(--ease), transform var(--ease), box-shadow var(--ease);
    }
    a:hover { color: var(--blue); }
    button, input, select { font: inherit; }
    button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible {
      outline: 3px solid rgba(84, 217, 230, .65);
      outline-offset: 3px;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 1030;
      background: rgba(11, 20, 39, .97);
      border-bottom: 2px solid var(--cyan);
      box-shadow: 0 8px 26px rgba(4, 12, 28, .2);
    }
    .navbar { min-height: 76px; padding: 0; }
    .navbar-brand {
      display: inline-flex;
      align-items: center;
      gap: 11px;
      color: #fff !important;
      font-size: 1.06rem;
      font-weight: 800;
      letter-spacing: .01em;
      white-space: nowrap;
    }
    .brand-mark {
      display: inline-grid;
      width: 36px;
      height: 36px;
      place-items: center;
      color: var(--navy);
      background: var(--cyan);
      border-radius: 11px;
      box-shadow: 0 0 18px rgba(84, 217, 230, .35);
      font-size: 1.05rem;
    }
    .navbar-nav { gap: 5px; }
    .nav-link {
      position: relative;
      padding: 25px 15px !important;
      color: #b8c6dc !important;
      font-size: .94rem;
      font-weight: 600;
    }
    .nav-link::after {
      position: absolute;
      right: 15px;
      bottom: -2px;
      left: 15px;
      height: 2px;
      background: var(--cyan);
      box-shadow: 0 0 12px rgba(84, 217, 230, .8);
      content: "";
      opacity: 0;
      transform: scaleX(.35);
      transition: opacity var(--ease), transform var(--ease);
    }
    .nav-link:hover, .nav-link.active { color: #fff !important; }
    .nav-link:hover::after, .nav-link.active::after { opacity: 1; transform: scaleX(1); }
    .nav-action {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 42px;
      padding: 0 18px;
      color: var(--navy) !important;
      background: var(--cyan);
      border: 1px solid var(--cyan);
      border-radius: 10px;
      font-size: .9rem;
      font-weight: 800;
      box-shadow: 0 0 18px rgba(84, 217, 230, .18);
    }
    .nav-action:hover {
      color: var(--navy) !important;
      background: #86edf3;
      border-color: #86edf3;
      transform: translateY(-2px);
    }
    .navbar-toggler {
      padding: 8px 10px;
      border: 1px solid rgba(255, 255, 255, .25);
      border-radius: 9px;
    }
    .navbar-toggler:focus { box-shadow: 0 0 0 3px rgba(84, 217, 230, .3); }
    .navbar-toggler-icon { filter: invert(1); }

    .page-hero {
      position: relative;
      overflow: hidden;
      padding: 72px 0 42px;
      background: linear-gradient(125deg, #edf5ff 0%, #f7faff 55%, #eaf6ff 100%);
    }
    .page-hero::before {
      position: absolute;
      top: -130px;
      right: 6%;
      width: 360px;
      height: 360px;
      border: 1px solid rgba(35, 103, 209, .13);
      border-radius: 50%;
      content: "";
    }
    .page-hero::after {
      position: absolute;
      right: 13%;
      bottom: -100px;
      width: 250px;
      height: 250px;
      border: 1px solid rgba(84, 217, 230, .45);
      border-radius: 50%;
      content: "";
    }
    .page-hero .container { position: relative; z-index: 1; }
    .breadcrumb {
      margin-bottom: 20px;
      font-size: .88rem;
      --bs-breadcrumb-divider: "›";
    }
    .breadcrumb-item, .breadcrumb-item a { color: var(--ink-soft); }
    .breadcrumb-item.active { color: var(--blue-dark); }
    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 15px;
      color: var(--blue-dark);
      font-size: .8rem;
      font-weight: 800;
      letter-spacing: .07em;
    }
    .eyebrow::before {
      width: 28px;
      height: 2px;
      background: var(--blue);
      content: "";
    }
    h1, h2, h3, p { overflow-wrap: break-word; }
    .page-hero h1 {
      max-width: 860px;
      margin: 0 0 17px;
      color: var(--ink);
      font-size: clamp(2.15rem, 4.8vw, 4.25rem);
      font-weight: 900;
      letter-spacing: 0;
      line-height: 1.16;
    }
    .hero-lead {
      max-width: 760px;
      margin: 0;
      color: var(--ink-soft);
      font-size: 1.06rem;
      line-height: 1.9;
    }
    .hero-summary {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 27px;
    }
    .summary-pill {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      min-height: 38px;
      padding: 7px 13px;
      color: var(--blue-dark);
      background: rgba(255, 255, 255, .82);
      border: 1px solid rgba(35, 103, 209, .16);
      border-radius: 99px;
      font-size: .87rem;
      font-weight: 700;
      box-shadow: 0 7px 18px rgba(30, 72, 124, .05);
    }
    .summary-dot {
      width: 7px;
      height: 7px;
      background: var(--cyan);
      border-radius: 50%;
      box-shadow: 0 0 10px rgba(84, 217, 230, .8);
    }

    main { padding: 0 0 82px; }
    .section { padding: 72px 0; }
    .section-heading {
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 24px;
      margin-bottom: 28px;
    }
    .section-kicker {
      margin-bottom: 9px;
      color: var(--blue-dark);
      font-size: .8rem;
      font-weight: 800;
      letter-spacing: .08em;
    }
    .section-heading h2 {
      margin: 0;
      color: var(--ink);
      font-size: clamp(1.65rem, 3vw, 2.45rem);
      font-weight: 900;
      line-height: 1.25;
    }
    .section-heading p {
      max-width: 470px;
      margin: 0;
      color: var(--ink-soft);
      font-size: .95rem;
    }

    .filter-panel {
      position: relative;
      z-index: 2;
      margin-top: -10px;
      padding: 20px;
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      box-shadow: var(--shadow);
    }
    .filter-panel .form-label {
      margin-bottom: 7px;
      color: var(--ink);
      font-size: .85rem;
      font-weight: 800;
    }
    .form-control, .form-select {
      min-height: 48px;
      color: var(--ink);
      background-color: #fbfdff;
      border: 1px solid var(--line);
      border-radius: 10px;
      box-shadow: none;
    }
    .form-control::placeholder { color: #8796ab; }
    .form-control:focus, .form-select:focus {
      color: var(--ink);
      background-color: var(--white);
      border-color: var(--blue);
      box-shadow: 0 0 0 4px rgba(35, 103, 209, .12);
    }
    .filter-submit {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 100%;
      min-height: 48px;
      color: #fff;
      background: var(--blue);
      border: 1px solid var(--blue);
      border-radius: 10px;
      font-weight: 800;
      transition: all var(--ease);
    }
    .filter-submit:hover {
      background: var(--blue-dark);
      border-color: var(--blue-dark);
      box-shadow: 0 10px 20px rgba(35, 103, 209, .2);
      transform: translateY(-2px);
    }
    .filter-submit:active { transform: translateY(0); }

    .catalog-layout {
      display: grid;
      grid-template-columns: 250px minmax(0, 1fr);
      gap: 28px;
      align-items: start;
    }
    .tag-sidebar {
      position: sticky;
      top: 100px;
      padding: 21px;
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      box-shadow: 0 12px 30px rgba(24, 63, 110, .06);
    }
    .sidebar-title {
      margin: 0 0 12px;
      color: var(--ink);
      font-size: 1rem;
      font-weight: 900;
    }
    .sidebar-note {
      margin: 0 0 16px;
      color: var(--ink-soft);
      font-size: .86rem;
      line-height: 1.65;
    }
    .tag-nav {
      display: flex;
      flex-direction: column;
      gap: 7px;
    }
    .tag-nav a {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 10px;
      min-height: 42px;
      padding: 8px 10px;
      color: var(--ink-soft);
      border-radius: 9px;
      font-size: .9rem;
      font-weight: 700;
    }
    .tag-nav a:hover, .tag-nav a.active {
      color: var(--blue-dark);
      background: var(--pale);
    }
    .tag-nav a.active { box-shadow: inset 3px 0 0 var(--cyan); }
    .tag-count {
      min-width: 25px;
      padding: 1px 7px;
      color: var(--blue-dark);
      background: #e8f2ff;
      border-radius: 99px;
      font-size: .74rem;
      text-align: center;
    }
    .sidebar-line {
      height: 1px;
      margin: 18px 0;
      background: var(--line);
    }
    .safe-note {
      padding: 12px;
      color: #5e6d80;
      background: #f6f9fc;
      border-left: 3px solid var(--cyan);
      border-radius: 0 9px 9px 0;
      font-size: .8rem;
      line-height: 1.65;
    }

    .content-toolbar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      margin-bottom: 18px;
    }
    .result-count {
      color: var(--ink-soft);
      font-size: .9rem;
    }
    .result-count strong { color: var(--ink); }
    .sort-select {
      width: 148px;
      min-height: 40px;
      padding-top: 5px;
      padding-bottom: 5px;
      font-size: .86rem;
    }

    .feature-story {
      position: relative;
      display: grid;
      grid-template-columns: minmax(210px, .88fr) minmax(0, 1.25fr);
      overflow: hidden;
      margin-bottom: 20px;
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      box-shadow: var(--shadow);
      transition: transform var(--ease), box-shadow var(--ease);
    }
    .feature-story:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-3px);
    }
    .thumb-large {
      position: relative;
      min-height: 300px;
      overflow: hidden;
      background:
        linear-gradient(155deg, rgba(11, 20, 39, .08), rgba(35, 103, 209, .16)),
        linear-gradient(135deg, #b8d9f7, #e8f4ff);
    }
    .thumb-large::before {
      position: absolute;
      top: 20%;
      left: 14%;
      width: 70%;
      height: 46%;
      border: 1px solid rgba(255, 255, 255, .7);
      border-radius: 12px;
      box-shadow: 0 18px 38px rgba(14, 54, 106, .15);
      content: "";
    }
    .thumb-large::after {
      position: absolute;
      right: 18%;
      bottom: 16%;
      width: 48%;
      height: 10px;
      background: rgba(255, 255, 255, .75);
      border-radius: 99px;
      content: "";
    }
    .play-symbol {
      position: absolute;
      top: 50%;
      left: 50%;
      display: grid;
      width: 54px;
      height: 54px;
      place-items: center;
      color: var(--navy);
      background: rgba(255, 255, 255, .94);
      border: 1px solid rgba(255, 255, 255, .8);
      border-radius: 50%;
      box-shadow: 0 10px 25px rgba(12, 43, 81, .22);
      font-size: 1.1rem;
      transform: translate(-50%, -50%);
    }
    .thumb-label {
      position: absolute;
      bottom: 16px;
      left: 16px;
      padding: 5px 10px;
      color: #fff;
      background: rgba(11, 20, 39, .82);
      border-radius: 7px;
      font-size: .76rem;
      font-weight: 800;
    }
    .feature-body {
      display: flex;
      flex-direction: column;
      align-items: flex-start;
      padding: 31px;
    }
    .badge-soft {
      display: inline-flex;
      align-items: center;
      min-height: 26px;
      padding: 3px 9px;
      color: var(--blue-dark);
      background: #e8f1ff;
      border: 1px solid #d8e7fc;
      border-radius: 99px;
      font-size: .76rem;
      font-weight: 800;
    }
    .badge-cyan {
      color: #14626d;
      background: #e1f9fa;
      border-color: #c9eff1;
    }
    .badge-purple {
      color: #5545ad;
      background: #eeeaff;
      border-color: #ded7fb;
    }
    .feature-body h2 {
      max-width: 520px;
      margin: 14px 0 12px;
      color: var(--ink);
      font-size: clamp(1.35rem, 2.5vw, 2rem);
      font-weight: 900;
      line-height: 1.35;
    }
    .feature-body p {
      max-width: 560px;
      margin: 0;
      color: var(--ink-soft);
      font-size: .94rem;
    }
    .meta-row {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin: 20px 0 25px;
      color: #718198;
      font-size: .82rem;
      font-weight: 700;
    }
    .meta-row span::before {
      display: inline-block;
      width: 5px;
      height: 5px;
      margin: 0 8px 2px 0;
      background: var(--cyan);
      border-radius: 50%;
      content: "";
    }
    .text-link {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin-top: auto;
      color: var(--blue-dark);
      font-size: .9rem;
      font-weight: 900;
    }
    .text-link::after {
      content: "→";
      transition: transform var(--ease);
    }
    .text-link:hover::after { transform: translateX(4px); }

    .index-group {
      margin-top: 34px;
      padding-top: 2px;
    }
    .group-heading {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      margin-bottom: 12px;
    }
    .group-heading h2 {
      margin: 0;
      color: var(--ink);
      font-size: 1.28rem;
      font-weight: 900;
    }
    .group-heading span {
      color: var(--ink-soft);
      font-size: .82rem;
    }
    .compact-list {
      overflow: hidden;
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      box-shadow: 0 10px 28px rgba(24, 63, 110, .05);
    }
    .compact-item {
      display: grid;
      grid-template-columns: 48px 126px minmax(0, 1fr) auto;
      gap: 17px;
      align-items: center;
      padding: 15px 20px;
      border-bottom: 1px solid var(--line);
      transition: background var(--ease);
    }
    .compact-item:last-child { border-bottom: 0; }
    .compact-item:hover { background: #fbfdff; }
    .item-number {
      color: #9aabc1;
      font-size: .88rem;
      font-weight: 900;
    }
    .mini-thumb {
      position: relative;
      height: 70px;
      overflow: hidden;
      background: #dceeff;
      border-radius: 9px;
    }
    .mini-thumb::before {
      position: absolute;
      top: 14px;
      left: 17px;
      width: 55px;
      height: 39px;
      border: 1px solid rgba(255, 255, 255, .86);
      border-radius: 7px;
      content: "";
    }
    .mini-thumb.tone-two { background: #dfe8ff; }
    .mini-thumb.tone-three { background: #dff4f3; }
    .mini-thumb .play-mini {
      position: absolute;
      right: 10px;
      bottom: 8px;
      color: var(--blue-dark);
      font-size: .75rem;
      font-weight: 900;
    }
    .compact-copy h3 {
      margin: 0 0 4px;
      color: var(--ink);
      font-size: .98rem;
      font-weight: 900;
      line-height: 1.45;
    }
    .compact-copy p {
      margin: 0;
      color: var(--ink-soft);
      font-size: .8rem;
      line-height: 1.55;
    }
    .item-meta {
      min-width: 95px;
      color: #718198;
      font-size: .78rem;
      text-align: right;
    }
    .item-meta span { display: block; }
    .item-meta strong {
      color: var(--blue-dark);
      font-weight: 800;
    }

    .tag-cloud-wrap {
      margin-top: 50px;
      padding: 32px;
      background: var(--navy);
      border-radius: var(--radius);
      box-shadow: 0 18px 38px rgba(11, 20, 39, .15);
    }
    .tag-cloud-wrap .section-kicker { color: var(--cyan); }
    .tag-cloud-wrap h2 {
      margin: 0 0 10px;
      color: #fff;
      font-size: clamp(1.45rem, 3vw, 2.1rem);
      font-weight: 900;
    }
    .tag-cloud-wrap p {
      max-width: 710px;
      margin: 0 0 22px;
      color: #b8c6dc;
      font-size: .92rem;
    }
    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }
    .tag-cloud a {
      display: inline-flex;
      align-items: center;
      min-height: 36px;
      padding: 5px 12px;
      color: #dce9fb;
      background: rgba(255, 255, 255, .07);
      border: 1px solid rgba(255, 255, 255, .13);
      border-radius: 9px;
      font-size: .84rem;
      font-weight: 700;
    }
    .tag-cloud a:hover {
      color: var(--navy);
      background: var(--cyan);
      border-color: var(--cyan);
      transform: translateY(-2px);
    }

    .browse-guide {
      padding: 72px 0 0;
    }
    .guide-grid {
      display: grid;
      grid-template-columns: 1.1fr .9fr;
      gap: 24px;
    }
    .guide-card, .notice-card {
      padding: 30px;
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      box-shadow: var(--shadow);
    }
    .guide-card h2, .notice-card h2 {
      margin: 0 0 14px;
      color: var(--ink);
      font-size: 1.45rem;
      font-weight: 900;
    }
    .step-list {
      display: grid;
      gap: 14px;
      margin: 20px 0 0;
    }
    .step-row {
      display: grid;
      grid-template-columns: 34px minmax(0, 1fr);
      gap: 13px;
      align-items: start;
    }
    .step-no {
      display: grid;
      width: 34px;
      height: 34px;
      place-items: center;
      color: var(--blue-dark);
      background: var(--pale);
      border: 1px solid #dceafe;
      border-radius: 9px;
      font-size: .82rem;
      font-weight: 900;
    }
    .step-row h3 {
      margin: 0 0 3px;
      color: var(--ink);
      font-size: .96rem;
      font-weight: 900;
    }
    .step-row p {
      margin: 0;
      color: var(--ink-soft);
      font-size: .86rem;
      line-height: 1.65;
    }
    .notice-card {
      background: linear-gradient(145deg, #f8fbff, #edf6ff);
    }
    .notice-card p {
      margin: 0 0 17px;
      color: var(--ink-soft);
      font-size: .9rem;
    }
    .notice-list {
      display: grid;
      gap: 10px;
      padding: 0;
      margin: 0;
      list-style: none;
    }
    .notice-list li {
      position: relative;
      padding-left: 22px;
      color: var(--ink);
      font-size: .88rem;
    }
    .notice-list li::before {
      position: absolute;
      top: .64em;
      left: 2px;
      width: 8px;
      height: 8px;
      background: var(--cyan);
      border-radius: 50%;
      content: "";
    }

    .faq-section { padding: 72px 0 0; }
    .accordion {
      overflow: hidden;
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      box-shadow: var(--shadow);
    }
    .accordion-item {
      background: transparent;
      border: 0;
      border-bottom: 1px solid var(--line);
    }
    .accordion-item:last-child { border-bottom: 0; }
    .accordion-button {
      padding: 20px 23px;
      color: var(--ink);
      background: var(--white);
      box-shadow: none;
      font-size: .98rem;
      font-weight: 900;
    }
    .accordion-button:not(.collapsed) {
      color: var(--blue-dark);
      background: #f3f8ff;
      box-shadow: inset 3px 0 0 var(--cyan);
    }
    .accordion-button:focus {
      border-color: transparent;
      box-shadow: inset 3px 0 0 var(--cyan), 0 0 0 3px rgba(35, 103, 209, .13);
    }
    .accordion-button::after { background-size: 1rem; }
    .accordion-body {
      padding: 0 23px 21px;
      color: var(--ink-soft);
      font-size: .91rem;
      line-height: 1.8;
    }

    .pagination {
      justify-content: center;
      gap: 7px;
      margin: 34px 0 0;
    }
    .page-link {
      display: grid;
      width: 39px;
      height: 39px;
      place-items: center;
      padding: 0;
      color: var(--blue-dark);
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: 9px !important;
      font-size: .86rem;
      font-weight: 800;
      box-shadow: 0 4px 12px rgba(24, 63, 110, .04);
    }
    .page-link:hover {
      color: var(--blue-dark);
      background: var(--pale);
      border-color: #b9d2f5;
    }
    .page-item.active .page-link {
      color: #fff;
      background: var(--blue);
      border-color: var(--blue);
    }
    .page-item.disabled .page-link {
      color: #a7b4c5;
      background: #f4f7fa;
    }

    .site-footer {
      margin-top: 82px;
      padding: 52px 0 20px;
      color: #b8c6dc;
      background: var(--navy);
      border-top: 2px solid var(--cyan);
    }
    .footer-brand {
      display: inline-flex;
      align-items: center;
      gap: 11px;
      color: #fff !important;
      font-size: 1.1rem;
      font-weight: 900;
    }
    .footer-copy {
      max-width: 430px;
      margin: 15px 0 0;
      color: #9eafc7;
      font-size: .9rem;
      line-height: 1.75;
    }
    .footer-title {
      margin-bottom: 13px;
      color: #fff;
      font-size: .88rem;
      font-weight: 900;
    }
    .footer-links {
      display: grid;
      gap: 8px;
      padding: 0;
      margin: 0;
      list-style: none;
    }
    .footer-links a {
      color: #aebed4;
      font-size: .88rem;
    }
    .footer-links a:hover { color: var(--cyan); }
    .footer-bottom {
      display: flex;
      justify-content: space-between;
      gap: 18px;
      margin-top: 40px;
      padding-top: 18px;
      color: #8190a7;
      border-top: 1px solid rgba(255, 255, 255, .11);
      font-size: .8rem;
    }

    @media (max-width: 991.98px) {
      .navbar { min-height: 68px; }
      .navbar-collapse {
        padding: 9px 0 18px;
        border-top: 1px solid rgba(255, 255, 255, .12);
      }
      .navbar-nav { gap: 0; }
      .nav-link { padding: 12px 5px !important; }
      .nav-link::after { right: 5px; left: 5px; bottom: 3px; }
      .nav-action { width: 100%; margin-top: 10px; }
      .page-hero { padding: 56px 0 38px; }
      .catalog-layout { grid-template-columns: 1fr; }
      .tag-sidebar {
        position: static;
        padding: 17px;
      }
      .tag-nav {
        flex-direction: row;
        overflow-x: auto;
        padding-bottom: 4px;
      }
      .tag-nav a {
        flex: 0 0 auto;
        border: 1px solid var(--line);
      }
      .sidebar-line, .safe-note { display: none; }
      .guide-grid { grid-template-columns: 1fr; }
    }

    @media (max-width: 767.98px) {
      .section { padding: 52px 0; }
      .section-heading {
        display: block;
        margin-bottom: 22px;
      }
      .section-heading p { margin-top: 10px; }
      .filter-panel { padding: 16px; }
      .feature-story { grid-template-columns: 1fr; }
      .thumb-large { min-height: 212px; }
      .feature-body { padding: 23px; }
      .compact-item {
        grid-template-columns: 36px 92px minmax(0, 1fr);
        gap: 12px;
        padding: 13px;
      }
      .mini-thumb { height: 58px; }
      .mini-thumb::before {
        top: 11px;
        left: 12px;
        width: 43px;
        height: 31px;
      }
      .item-meta { display: none; }
      .compact-copy h3 { font-size: .91rem; }
      .compact-copy p {
        display: -webkit-box;
        overflow: hidden;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 2;
      }
      .tag-cloud-wrap, .guide-card, .notice-card { padding: 23px; }
      .footer-bottom {
        flex-direction: column;
        gap: 5px;
        margin-top: 30px;
      }
    }

    @media (max-width: 575.98px) {
      body { font-size: 15px; }
      .navbar-brand { font-size: .96rem; }
      .brand-mark { width: 32px; height: 32px; border-radius: 9px; }
      .page-hero { padding: 42px 0 32px; }
      .page-hero h1 { font-size: 2rem; }
      .hero-lead { font-size: .96rem; }
      .summary-pill { font-size: .78rem; }
      .content-toolbar { align-items: flex-start; flex-direction: column; }
      .sort-select { width: 100%; }
      .compact-item { grid-template-columns: 31px 76px minmax(0, 1fr); gap: 10px; }
      .mini-thumb { height: 54px; }
      .mini-thumb::before {
        top: 11px;
        left: 10px;
        width: 36px;
        height: 28px;
      }
      .play-mini { display: none; }
      .item-number { font-size: .76rem; }
      .accordion-button { padding: 17px; font-size: .91rem; }
      .accordion-body { padding: 0 17px 18px; }
    }