/* roulang page: index */
:root {
            --color-primary: #1D3A2F;
            --color-primary-dark: #162820;
            --color-accent: #B8863F;
            --color-accent-hover: #A07435;
            --color-bg: #F7F4EE;
            --color-white: #FFFFFF;
            --color-text: #2E2E2E;
            --color-muted: #6F6A61;
            --color-border: #E6E0D6;
            --color-success: #4A7A5B;
            --color-info: #496A85;
            --color-warning: #B05A2E;
            --radius-card: 8px;
            --radius-btn: 6px;
            --radius-img: 4px;
            --radius-tag: 999px;
            --shadow-card: 0 1px 3px rgba(26,42,32,.06), 0 4px 16px rgba(26,42,32,.04);
            --shadow-hover: 0 4px 12px rgba(26,42,32,.08), 0 12px 32px rgba(26,42,32,.08);
            --container: 1200px;
            --space: 96px;
            --space-sm: 64px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
            color: var(--color-text);
            background: var(--color-bg);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        button,
        input,
        select {
            font: inherit;
            color: inherit;
        }
        ul {
            list-style: none;
        }
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section {
            padding: var(--space) 0;
        }
        .section--sm {
            padding: var(--space-sm) 0;
        }
        .section-head {
            max-width: 720px;
            margin: 0 auto 56px;
            text-align: center;
        }
        .section-tag {
            display: inline-block;
            padding: 4px 16px;
            border-radius: var(--radius-tag);
            background: rgba(184, 134, 63, .12);
            color: var(--color-accent);
            font-size: .8125rem;
            font-weight: 600;
            letter-spacing: .05em;
        }
        .section-head h2 {
            font-size: clamp(1.4rem, 2.4vw, 1.8rem);
            color: var(--color-primary);
            font-weight: 700;
            margin: 14px 0 10px;
            line-height: 1.3;
        }
        .section-head p {
            color: var(--color-muted);
            font-size: .9375rem;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-size: 1rem;
            font-weight: 600;
            line-height: 1.2;
            border: 1.5px solid transparent;
            cursor: pointer;
            transition: all .22s ease-out;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--color-accent);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--color-accent-hover);
            filter: brightness(.97);
        }
        .btn-primary:active {
            transform: translateY(1px);
        }
        .btn-outline {
            background: transparent;
            border-color: var(--color-primary);
            color: var(--color-primary);
        }
        .btn-outline:hover {
            background: rgba(29, 58, 47, .05);
        }
        .btn-outline:active {
            transform: translateY(1px);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: .875rem;
        }
        .btn-lg {
            padding: 14px 34px;
            font-size: 1.0625rem;
        }
        .btn-block {
            width: 100%;
        }
        .btn:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            padding: 2px 12px;
            border-radius: var(--radius-tag);
            background: rgba(73, 106, 133, .12);
            color: var(--color-info);
            font-size: .75rem;
            font-weight: 600;
            letter-spacing: .03em;
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: #fff;
            border-bottom: 1px solid var(--color-border);
            box-shadow: 0 1px 8px rgba(30, 45, 38, .05);
            height: 64px;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: 24px;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-mark {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .logo-text {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: .02em;
            white-space: nowrap;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav-link {
            position: relative;
            font-size: .9375rem;
            color: #4A453D;
            padding: 6px 2px;
            transition: color .22s ease-out;
        }
        .nav-link::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            background: var(--color-accent);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform .22s ease-out;
        }
        .nav-link:hover {
            color: var(--color-primary);
        }
        .nav-link:hover::after,
        .nav-link.active::after {
            transform: scaleX(1);
        }
        .nav-link.active {
            color: var(--color-primary);
            font-weight: 600;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .nav-search {
            display: flex;
            align-items: center;
            background: var(--color-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-btn);
            height: 38px;
            padding: 0 10px;
            transition: width .25s ease-out, border-color .25s ease-out, box-shadow .25s ease-out;
            width: 180px;
        }
        .nav-search:focus-within {
            width: 220px;
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(184, 134, 63, .15);
        }
        .nav-search input {
            border: none;
            background: transparent;
            width: 100%;
            outline: none;
            font-size: .875rem;
            color: var(--color-text);
        }
        .nav-search input::placeholder {
            color: var(--color-muted);
        }
        .nav-search button {
            border: none;
            background: transparent;
            cursor: pointer;
            display: flex;
            padding: 4px;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 44px;
            height: 44px;
            background: transparent;
            border: none;
            cursor: pointer;
            padding: 0 8px;
        }
        .nav-toggle span {
            display: block;
            height: 2px;
            width: 22px;
            background: var(--color-primary);
            border-radius: 2px;
            transition: transform .25s ease-out, opacity .2s ease-out;
        }
        .nav-toggle.is-active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .nav-toggle.is-active span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.is-active span:nth-child(3) {
            transform: rotate(-45deg) translate(6px, -6px);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            background: url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
            padding: 112px 0;
            overflow: hidden;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(247, 244, 238, .96) 20%, rgba(247, 244, 238, .78) 60%, rgba(247, 244, 238, .52));
        }
        .hero-inner {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 48px;
        }
        .hero-content {
            max-width: 640px;
        }
        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: .8125rem;
            font-weight: 600;
            letter-spacing: .08em;
            color: var(--color-accent);
            text-transform: uppercase;
            margin-bottom: 20px;
        }
        .hero-tag::before {
            content: "";
            width: 28px;
            height: 2px;
            background: var(--color-accent);
            border-radius: 2px;
        }
        .hero h1 {
            font-size: clamp(2.2rem, 4vw, 3rem);
            line-height: 1.25;
            color: var(--color-primary);
            font-weight: 700;
            letter-spacing: .02em;
            margin-bottom: 20px;
        }
        .hero-sub {
            font-size: 1rem;
            line-height: 1.7;
            color: var(--color-muted);
            max-width: 520px;
            margin-bottom: 36px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-visual {
            position: relative;
            flex-shrink: 0;
            min-width: 260px;
        }
        .hero-score-card {
            background: var(--color-white);
            border-radius: var(--radius-card);
            padding: 28px 32px;
            box-shadow: var(--shadow-hover);
            border-left: 4px solid var(--color-accent);
            text-align: center;
            max-width: 240px;
            animation: floatCard 4s ease-in-out infinite;
        }
        .hero-score-card .score-label {
            display: block;
            font-size: .8125rem;
            color: var(--color-muted);
            margin-bottom: 6px;
        }
        .hero-score-card .score-value {
            display: block;
            font-family: "Inter", "Helvetica Neue", Arial, sans-serif;
            font-size: 3rem;
            font-weight: 700;
            color: var(--color-accent);
            line-height: 1;
            margin: 8px 0;
        }
        .hero-score-card .score-unit {
            font-size: .8125rem;
            color: var(--color-primary);
            font-weight: 600;
        }
        @keyframes floatCard {
            0%,
            100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-10px);
            }
        }

        /* ===== Trust ===== */
        .trust-bar {
            background: var(--color-primary);
            padding: 40px 0;
        }
        .trust-grid {
            display: flex;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }
        .trust-item {
            flex: 1;
            min-width: 160px;
            text-align: center;
            padding: 8px 12px;
        }
        .trust-num {
            font-family: "Inter", "Helvetica Neue", Arial, sans-serif;
            font-size: clamp(1.8rem, 3vw, 2.4rem);
            font-weight: 700;
            color: var(--color-accent);
            line-height: 1.2;
        }
        .trust-label {
            font-size: .875rem;
            color: rgba(255, 255, 255, .82);
            margin-top: 6px;
        }

        /* ===== Tier ===== */
        .tier-cards {
            display: flex;
            align-items: flex-end;
            gap: 20px;
            justify-content: center;
        }
        .tier-card {
            flex: 1;
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 32px 28px;
            box-shadow: var(--shadow-card);
            transition: transform .2s ease-out, box-shadow .2s ease-out;
            position: relative;
        }
        .tier-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .tier-card--secondary {
            flex: .9;
            background: var(--color-bg);
        }
        .tier-card--featured {
            flex: 1.35;
            background: var(--color-primary-dark);
            border: 1.5px solid var(--color-accent);
            padding: 40px 32px;
            transform: translateY(-12px);
            box-shadow: var(--shadow-hover);
        }
        .tier-card--featured:hover {
            transform: translateY(-16px);
            box-shadow: 0 8px 20px rgba(22, 40, 32, .18), 0 20px 44px rgba(22, 40, 32, .14);
        }
        .tier-card__badge {
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--color-accent);
            color: #fff;
            font-size: .75rem;
            font-weight: 700;
            letter-spacing: .08em;
            padding: 4px 16px;
            border-radius: var(--radius-tag);
        }
        .tier-card__plan {
            font-size: .9375rem;
            color: var(--color-muted);
            font-weight: 600;
            margin-bottom: 6px;
        }
        .tier-card--featured .tier-card__plan {
            color: rgba(255, 255, 255, .8);
        }
        .tier-card__num {
            font-family: "Inter", "Helvetica Neue", Arial, sans-serif;
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.2;
            margin: 12px 0 20px;
        }
        .tier-card--featured .tier-card__num {
            color: var(--color-accent);
        }
        .tier-card__num span {
            font-size: .875rem;
            font-weight: 400;
            color: var(--color-muted);
        }
        .tier-card--featured .tier-card__num span {
            color: rgba(255, 255, 255, .6);
        }
        .tier-card ul {
            margin-bottom: 28px;
            display: grid;
            gap: 12px;
        }
        .tier-card li {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            font-size: .875rem;
            color: var(--color-text);
        }
        .tier-card--featured li {
            color: rgba(255, 255, 255, .88);
        }
        .tier-card li::before {
            content: "✓";
            color: var(--color-accent);
            font-weight: 700;
            flex-shrink: 0;
        }

        /* ===== Compare ===== */
        .compare-wrap {
            background: var(--color-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
        }
        .compare-table {
            width: 100%;
            border-collapse: collapse;
        }
        .compare-table th,
        .compare-table td {
            padding: 18px 20px;
            text-align: center;
            font-size: .875rem;
            border-bottom: 1px solid var(--color-border);
        }
        .compare-table th {
            font-weight: 700;
            color: var(--color-primary);
            background: var(--color-bg);
            font-size: .9375rem;
        }
        .compare-table th.col-label,
        .compare-table td.col-label {
            text-align: left;
            color: var(--color-text);
            font-weight: 600;
            background: var(--color-white);
        }
        .compare-table tr:last-child th,
        .compare-table tr:last-child td {
            border-bottom: none;
        }
        .compare-table .is-hot {
            background: rgba(184, 134, 63, .06);
            box-shadow: inset 0 2px 0 var(--color-accent);
        }
        .compare-table .is-hot th {
            background: rgba(184, 134, 63, .1);
            color: var(--color-accent);
        }
        .compare-table .hot-tag {
            display: inline-block;
            background: var(--color-accent);
            color: #fff;
            font-size: .6875rem;
            font-weight: 700;
            border-radius: var(--radius-tag);
            padding: 2px 10px;
            margin-left: 6px;
            vertical-align: middle;
        }
        .compare-table td .icon-yes {
            color: var(--color-success);
            font-weight: 700;
        }
        .compare-table td .icon-no {
            color: var(--color-border);
        }
        .mobile-compare-cards {
            display: none;
        }

        /* ===== Countdown CTA ===== */
        .cta-zone {
            background: linear-gradient(135deg, var(--color-primary-dark) 0%, #1D3A2F 100%);
            padding: var(--space-sm) 0;
            position: relative;
            overflow: hidden;
        }
        .cta-zone::before {
            content: "";
            position: absolute;
            top: -60%;
            right: -10%;
            width: 480px;
            height: 480px;
            border: 1.5px solid rgba(184, 134, 63, .2);
            border-radius: 50%;
        }
        .cta-inner {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
            background: rgba(255, 255, 255, .04);
            border: 1px solid var(--color-accent);
            border-radius: 12px;
            padding: 44px 48px;
        }
        .cta-info {
            flex: 1 1 320px;
        }
        .cta-info h2 {
            font-size: clamp(1.4rem, 2.4vw, 1.8rem);
            color: #fff;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 8px;
        }
        .cta-info p {
            color: rgba(255, 255, 255, .7);
            font-size: .9375rem;
        }
        .cta-countdown {
            flex: 0 0 auto;
            display: flex;
            gap: 12px;
            align-items: center;
        }
        .countdown-item {
            text-align: center;
            min-width: 68px;
            padding: 14px 10px;
            background: rgba(0, 0, 0, .2);
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, .1);
        }
        .countdown-item .num {
            font-family: "Inter", "Helvetica Neue", Arial, sans-serif;
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.1;
            display: block;
            font-variant-numeric: tabular-nums;
        }
        .countdown-item .unit {
            font-size: .75rem;
            color: rgba(255, 255, 255, .6);
            margin-top: 4px;
            display: block;
        }
        .countdown-sep {
            font-size: 1.5rem;
            color: rgba(255, 255, 255, .3);
            font-weight: 300;
        }
        .cta-action {
            display: flex;
            flex-direction: column;
            gap: 12px;
            align-items: center;
        }
        .cta-action .btn {
            min-width: 160px;
        }
        .cta-note {
            margin-top: 16px;
            font-size: .75rem;
            color: rgba(255, 255, 255, .4);
            text-align: center;
        }

        /* ===== News ===== */
        .news-section {
            background: var(--color-white);
        }
        .news-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .news-card {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: transform .2s ease-out, box-shadow .2s ease-out;
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .news-card__link {
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .news-card__media {
            overflow: hidden;
            position: relative;
            aspect-ratio: 16 / 9;
            background: var(--color-border);
        }
        .news-card__media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .22s ease-out;
        }
        .news-card:hover .news-card__media img {
            transform: scale(1.03);
        }
        .news-card__body {
            padding: 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
            gap: 10px;
        }
        .news-card__body .badge {
            align-self: flex-start;
        }
        .news-card__body h3 {
            font-size: 1.1rem;
            color: var(--color-primary);
            font-weight: 700;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card--lg .news-card__body h3 {
            font-size: 1.4rem;
        }
        .news-card__body p {
            font-size: .875rem;
            color: var(--color-muted);
            line-height: 1.65;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }
        .news-card__meta {
            font-size: .8125rem;
            color: var(--color-muted);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .news-card__meta::before {
            content: "";
            width: 4px;
            height: 4px;
            background: var(--color-accent);
            border-radius: 50%;
        }
        .news-empty {
            grid-column: 1 / -1;
            border: 1.5px dashed var(--color-border);
            border-radius: var(--radius-card);
            padding: 64px 24px;
            text-align: center;
            background: var(--color-bg);
        }
        .news-empty__icon {
            font-size: 2rem;
            display: block;
            margin-bottom: 12px;
            opacity: .5;
        }
        .news-empty p {
            color: var(--color-muted);
            font-size: .9375rem;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid var(--color-border);
        }
        .faq-item:first-child {
            border-top: 1px solid var(--color-border);
        }
        .faq-item details {
            position: relative;
        }
        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            padding: 24px 8px;
            cursor: pointer;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-primary);
            list-style: none;
            transition: color .22s ease-out;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary:hover {
            color: var(--color-accent);
        }
        .faq-item summary::after {
            content: "+";
            font-size: 1.5rem;
            font-weight: 400;
            color: var(--color-accent);
            transition: transform .25s ease-out;
            flex-shrink: 0;
            line-height: 1;
        }
        .faq-item details[open] summary::after {
            transform: rotate(45deg);
        }
        .faq-item .faq-answer {
            padding: 0 8px 24px;
            color: var(--color-muted);
            font-size: .9375rem;
            line-height: 1.7;
            max-width: 760px;
        }

        /* ===== Consult ===== */
        .consult-section {
            background: var(--color-bg);
        }
        .consult-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }
        .consult-intro h2 {
            font-size: clamp(1.4rem, 2.4vw, 1.8rem);
            color: var(--color-primary);
            font-weight: 700;
            margin-bottom: 16px;
        }
        .consult-intro p {
            color: var(--color-muted);
            font-size: .9375rem;
            margin-bottom: 12px;
            max-width: 440px;
        }
        .consult-intro .intro-points {
            margin-top: 28px;
            display: grid;
            gap: 16px;
        }
        .consult-intro .intro-points li {
            display: flex;
            gap: 12px;
            font-size: .9375rem;
            color: var(--color-text);
        }
        .consult-intro .intro-points li::before {
            content: "•";
            color: var(--color-accent);
            font-weight: 700;
            font-size: 1.2rem;
            line-height: 1.4;
        }
        .consult-form-wrap {
            background: var(--color-white);
            border-radius: var(--radius-card);
            padding: 40px;
            box-shadow: var(--shadow-card);
        }
        .consult-form {
            display: grid;
            gap: 20px;
        }
        .form-group {
            display: grid;
            gap: 6px;
        }
        .form-group label {
            font-size: .875rem;
            font-weight: 600;
            color: var(--color-primary);
        }
        .form-group label .required {
            color: var(--color-warning);
        }
        .form-group input,
        .form-group select {
            width: 100%;
            height: 46px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-btn);
            padding: 0 14px;
            background: var(--color-white);
            font-size: .9375rem;
            transition: border-color .22s ease-out, box-shadow .22s ease-out;
        }
        .form-group input:focus,
        .form-group select:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(184, 134, 63, .15);
            outline: none;
        }
        .form-group input::placeholder {
            color: var(--color-muted);
        }
        .form-feedback {
            display: none;
            padding: 12px 16px;
            border-radius: var(--radius-btn);
            font-size: .875rem;
            font-weight: 600;
            text-align: center;
        }
        .form-feedback.success {
            display: block;
            background: rgba(74, 122, 91, .1);
            color: var(--color-success);
            border: 1px solid rgba(74, 122, 91, .3);
        }
        .form-feedback.error {
            display: block;
            background: rgba(176, 90, 46, .1);
            color: var(--color-warning);
            border: 1px solid rgba(176, 90, 46, .3);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #12211A;
            color: rgba(255, 255, 255, .7);
            font-size: .8125rem;
            padding: 64px 0 0;
        }
        .footer-top {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }
        .footer-brand .footer-logo {
            font-size: 1.125rem;
            font-weight: 700;
            color: #fff;
            display: block;
            margin-bottom: 12px;
        }
        .footer-brand p {
            color: rgba(255, 255, 255, .6);
            max-width: 280px;
            line-height: 1.65;
        }
        .footer-col h4 {
            font-size: .875rem;
            color: #fff;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, .65);
            padding: 4px 0;
            transition: color .22s ease-out;
        }
        .footer-col a:hover {
            color: #fff;
        }
        .footer-mid {
            padding: 20px 0;
            text-align: center;
            color: rgba(255, 255, 255, .4);
            border-bottom: 1px solid rgba(255, 255, 255, .06);
            font-size: .75rem;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 24px 0 32px;
            color: rgba(255, 255, 255, .4);
            font-size: .75rem;
            flex-wrap: wrap;
        }

        /* ===== Reveal animation ===== */
        .reveal {
            opacity: 0;
            transform: translateY(16px);
            transition: opacity .6s ease-out, transform .6s ease-out;
        }
        .reveal.is-visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1023px) {
            .tier-cards {
                flex-wrap: wrap;
                align-items: stretch;
            }
            .tier-card {
                flex: 1 1 calc(50% - 20px);
            }
            .tier-card--featured {
                flex: 1 1 100%;
                transform: none;
                order: -1;
            }
            .tier-card--featured:hover {
                transform: translateY(-4px);
            }
            .trust-grid {
                gap: 16px;
            }
            .cta-inner {
                padding: 32px;
            }
            .consult-grid {
                gap: 32px;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .footer-top {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 767px) {
            :root {
                --space: 64px;
                --space-sm: 48px;
            }
            .container {
                padding: 0 16px;
            }
            .site-header {
                height: 56px;
            }
            .header-inner {
                height: 56px;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-menu {
                position: fixed;
                top: 56px;
                right: -300px;
                width: 280px;
                height: calc(100% - 56px);
                background: #fff;
                display: flex;
                flex-direction: column;
                gap: 0;
                transition: right .28s ease-out;
                box-shadow: -8px 0 24px rgba(22, 40, 32, .08);
                padding: 24px;
                z-index: 90;
            }
            .nav-menu.is-open {
                right: 0;
            }
            .nav-menu .nav-link {
                display: block;
                padding: 14px 0;
                border-bottom: 1px solid var(--color-border);
                font-size: 1rem;
            }
            .nav-menu .nav-link::after {
                display: none;
            }
            .nav-search {
                display: none;
            }
            .header-actions .btn {
                padding: 8px 16px;
                font-size: .8125rem;
            }
            .hero {
                padding: 72px 0;
            }
            .hero-inner {
                flex-direction: column;
                text-align: center;
            }
            .hero-content {
                max-width: none;
            }
            .hero-sub {
                margin-left: auto;
                margin-right: auto;
            }
            .hero-actions {
                justify-content: center;
            }
            .hero-visual {
                display: none;
            }
            .trust-grid {
                flex-wrap: wrap;
            }
            .trust-item {
                flex: 1 1 calc(50% - 16px);
            }
            .tier-cards {
                flex-direction: column;
                align-items: stretch;
            }
            .tier-card,
            .tier-card--secondary,
            .tier-card--featured {
                flex: 1 1 auto;
                transform: none;
            }
            .tier-card--featured {
                order: -1;
            }
            .tier-card--featured:hover {
                transform: translateY(-4px);
            }
            .compare-table-wrap {
                display: none;
            }
            .mobile-compare-cards {
                display: block;
            }
            .mcard-list {
                display: grid;
                gap: 20px;
            }
            .mcard {
                background: var(--color-white);
                border: 1px solid var(--color-border);
                border-radius: var(--radius-card);
                padding: 24px;
                box-shadow: var(--shadow-card);
                position: relative;
            }
            .mcard--hot {
                border: 1.5px solid var(--color-accent);
                box-shadow: var(--shadow-hover);
            }
            .mcard__tag {
                position: absolute;
                top: -10px;
                left: 20px;
                background: var(--color-accent);
                color: #fff;
                font-size: .6875rem;
                font-weight: 700;
                border-radius: var(--radius-tag);
                padding: 3px 12px;
            }
            .mcard__name {
                font-size: 1rem;
                font-weight: 700;
                color: var(--color-primary);
                margin-bottom: 4px;
            }
            .mcard__price {
                font-family: "Inter", "Helvetica Neue", Arial, sans-serif;
                font-size: 1.5rem;
                font-weight: 700;
                color: var(--color-accent);
                margin-bottom: 16px;
            }
            .mcard__price span {
                font-size: .75rem;
                font-weight: 400;
                color: var(--color-muted);
            }
            .mcard ul {
                display: grid;
                gap: 8px;
                margin-bottom: 20px;
            }
            .mcard li {
                font-size: .8125rem;
                color: var(--color-text);
                display: flex;
                gap: 8px;
            }
            .mcard li::before {
                content: "✓";
                color: var(--color-accent);
                font-weight: 700;
            }
            .mcard .btn {
                width: 100%;
            }
            .cta-inner {
                flex-direction: column;
                align-items: center;
                text-align: center;
                padding: 32px 20px;
            }
            .cta-countdown {
                justify-content: center;
                flex-wrap: wrap;
            }
            .countdown-item {
                min-width: 56px;
                padding: 10px 6px;
            }
            .countdown-item .num {
                font-size: 1.5rem;
            }
            .cta-action .btn {
                width: 100%;
            }
            .consult-grid {
                grid-template-columns: 1fr;
            }
            .consult-form-wrap {
                padding: 28px 20px;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }
        @media (min-width: 768px) and (max-width: 1023px) {
            .compare-table-wrap {
                overflow-x: auto;
            }
            .compare-table {
                min-width: 720px;
            }
        }
        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: .01ms !important;
                transition-duration: .01ms !important;
            }
            html {
                scroll-behavior: auto;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #1D3A2F;
            --primary-dark: #162820;
            --accent: #B8863F;
            --accent-hover: #a57636;
            --bg: #F7F4EE;
            --bg-card: #FFFFFF;
            --text: #2E2E2E;
            --text-muted: #6F6A61;
            --border: #E6E0D6;
            --success: #4A7A5B;
            --info: #496A85;
            --warning: #B05A2E;
            --radius: 8px;
            --radius-btn: 6px;
            --radius-badge: 999px;
            --shadow-card: 0 1px 3px rgba(26,42,32,.06), 0 4px 16px rgba(26,42,32,.04);
            --shadow-hover: 0 4px 12px rgba(26,42,32,.08), 0 12px 32px rgba(26,42,32,.08);
            --container: 1200px;
            --space: 96px;
            --space-mobile: 64px;
            --ease: cubic-bezier(.25,.4,.3,1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.75;
            font-size: 1rem;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .2s ease;
        }

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

        button,
        input,
        select {
            font-family: inherit;
            font-size: inherit;
        }

        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 767px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255,255,255,.96);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 8px rgba(30,45,38,.05);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: 16px;
        }

        @media (max-width: 767px) {
            .header-inner {
                height: 56px;
            }
        }

        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-mark {
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .logo-text {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--primary);
            letter-spacing: .01em;
            white-space: nowrap;
        }

        @media (max-width: 767px) {
            .logo-text {
                font-size: 1rem;
            }
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 28px;
        }

        .nav-menu .nav-link {
            font-size: .9375rem;
            color: #4A453D;
            font-weight: 400;
            padding: 4px 0;
            position: relative;
            transition: color .2s var(--ease);
        }

        .nav-menu .nav-link:hover {
            color: var(--primary);
        }

        .nav-menu .nav-link::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2px;
            background: var(--accent);
            transition: width .2s var(--ease);
        }

        .nav-menu .nav-link:hover::after {
            width: 100%;
        }

        .nav-menu .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }

        .nav-menu .nav-link.active::after {
            width: 100%;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .nav-search {
            display: flex;
            align-items: center;
            background: #FAF8F3;
            border: 1px solid var(--border);
            border-radius: var(--radius-btn);
            padding: 0 10px;
            height: 38px;
            width: 180px;
            transition: all .2s var(--ease);
        }

        .nav-search:focus-within {
            width: 220px;
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(184,134,63,.15);
            background: #fff;
        }

        .nav-search input {
            border: none;
            outline: none;
            background: transparent;
            width: 100%;
            font-size: .875rem;
            color: var(--text);
        }

        .nav-search input::placeholder {
            color: var(--text-muted);
        }

        .nav-search button {
            background: transparent;
            border: none;
            cursor: pointer;
            padding: 2px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: opacity .2s;
        }

        .nav-search button:hover {
            opacity: .7;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-btn);
            cursor: pointer;
            transition: all .2s var(--ease);
            border: none;
            font-weight: 500;
            letter-spacing: .02em;
        }

        .btn:focus-visible,
        .nav-link:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
        }

        .btn-primary {
            background: var(--accent);
            color: #fff;
            padding: 10px 24px;
            font-size: .9375rem;
        }

        .btn-primary:hover {
            background: var(--accent-hover);
            color: #fff;
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: translateY(1px);
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: .875rem;
            height: 38px;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: transparent;
            border: none;
            cursor: pointer;
            padding: 6px;
        }

        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: all .3s var(--ease);
        }

        @media (max-width: 767px) {
            .nav-menu {
                position: fixed;
                top: 56px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: flex-start;
                padding: 20px 16px 28px;
                gap: 16px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 12px 24px rgba(26,42,32,.08);
                transform: translateY(-120%);
                opacity: 0;
                visibility: hidden;
                transition: all .3s var(--ease);
            }

            .nav-menu.open {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }

            .nav-search {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .btn-sm {
                padding: 8px 14px;
                font-size: .8125rem;
            }
        }

        /* ===== Page Hero for Category ===== */
        .page-head {
            background: linear-gradient(135deg, #F7F4EE 0%, #EDE8DF 100%);
            padding: 68px 0 56px;
            border-bottom: 1px solid var(--border);
            position: relative;
            overflow: hidden;
        }

        .page-head::before {
            content: "";
            position: absolute;
            right: -60px;
            top: -60px;
            width: 240px;
            height: 240px;
            background: radial-gradient(circle, rgba(184,134,63,.10) 0%, transparent 70%);
        }

        .page-head h1 {
            font-size: clamp(1.8rem, 3.2vw, 2.4rem);
            font-weight: 700;
            color: var(--primary);
            letter-spacing: .02em;
            line-height: 1.3;
            margin-bottom: 14px;
        }

        .page-head .sub-title {
            font-size: 1.0625rem;
            color: var(--text-muted);
            max-width: 720px;
            line-height: 1.7;
        }

        .breadcrumb {
            font-size: .8125rem;
            color: var(--text-muted);
            margin-bottom: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }

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

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

        .breadcrumb span {
            color: var(--accent);
        }

        /* ===== Section base ===== */
        .section {
            padding: var(--space) 0;
        }

        @media (max-width: 767px) {
            .section {
                padding: var(--space-mobile) 0;
            }
        }

        .section-compact {
            padding: 64px 0;
        }

        @media (max-width: 767px) {
            .section-compact {
                padding: 48px 0;
            }
        }

        .section-head {
            margin-bottom: 40px;
        }

        .section-head h2 {
            font-size: clamp(1.4rem, 2.4vw, 1.8rem);
            font-weight: 600;
            color: var(--primary);
            letter-spacing: .01em;
            margin-bottom: 12px;
            line-height: 1.35;
        }

        .section-head p {
            color: var(--text-muted);
            max-width: 680px;
            font-size: .9375rem;
        }

        /* ===== Intro ===== */
        .intro-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }

        @media (max-width: 1023px) {
            .intro-wrap {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

        .intro-text p {
            margin-bottom: 1.2em;
            color: var(--text);
            font-size: .9375rem;
        }

        .intro-text p:last-child {
            margin-bottom: 0;
        }

        .intro-image {
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .intro-image img {
            width: 100%;
            height: 360px;
            object-fit: cover;
            transition: transform .3s var(--ease);
        }

        .intro-image:hover img {
            transform: scale(1.03);
        }

        /* ===== Sub category cards ===== */
        .sub-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        @media (max-width: 1023px) {
            .sub-cards {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 767px) {
            .sub-cards {
                grid-template-columns: 1fr;
            }
        }

        .sub-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
            transition: all .2s var(--ease);
        }

        .sub-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .sub-card .icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: rgba(184,134,63,.12);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
        }

        .sub-card h3 {
            font-size: 1.0625rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .sub-card p {
            font-size: .875rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ===== Alternating feature blocks ===== */
        .feature-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            margin-bottom: 64px;
        }

        .feature-block:last-child {
            margin-bottom: 0;
        }

        .feature-block.reverse .feature-media {
            order: -1;
        }

        @media (max-width: 1023px) {
            .feature-block {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .feature-block.reverse .feature-media {
                order: 0;
            }
        }

        .feature-media {
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .feature-media img {
            width: 100%;
            height: 320px;
            object-fit: cover;
            transition: transform .3s var(--ease);
        }

        .feature-media:hover img {
            transform: scale(1.03);
        }

        .feature-content h3 {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 14px;
            line-height: 1.4;
        }

        .feature-content p {
            color: var(--text);
            font-size: .9375rem;
            margin-bottom: 12px;
        }

        .feature-list {
            list-style: none;
            margin-top: 12px;
        }

        .feature-list li {
            position: relative;
            padding-left: 24px;
            padding-bottom: 10px;
            font-size: .875rem;
            color: var(--text);
        }

        .feature-list li::before {
            content: "";
            position: absolute;
            left: 0;
            top: 10px;
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--accent);
        }

        /* ===== Steps ===== */
        .steps-grid {
            display: flex;
            gap: 24px;
            overflow-x: auto;
            padding-bottom: 8px;
            scrollbar-width: thin;
        }

        .step-item {
            flex: 0 0 240px;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px 24px;
            position: relative;
            box-shadow: var(--shadow-card);
        }

        .step-num {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--accent);
            font-family: "Inter", "Helvetica Neue", Arial, sans-serif;
            line-height: 1;
            margin-bottom: 16px;
            display: block;
        }

        .step-item h3 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .step-item p {
            font-size: .875rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ===== Dark CTA ===== */
        .cta-section {
            background: var(--primary-dark);
            padding: 72px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            left: 10%;
            top: 0;
            width: 1px;
            height: 100%;
            background: linear-gradient(to bottom, transparent, rgba(184,134,63,.5), transparent);
        }

        .cta-inner {
            text-align: center;
            max-width: 760px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            color: #fff;
            font-size: 1.5rem;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: .02em;
        }

        .cta-inner p {
            color: rgba(255,255,255,.72);
            font-size: .9375rem;
            margin-bottom: 32px;
        }

        .cta-inner .btn-primary {
            font-size: 1rem;
            padding: 14px 36px;
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid var(--border);
        }

        .faq-item:first-child {
            border-top: 1px solid var(--border);
        }

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 4px;
            cursor: pointer;
            gap: 16px;
            transition: color .2s var(--ease);
        }

        .faq-question:hover {
            color: var(--accent);
        }

        .faq-question h3 {
            font-size: .9375rem;
            font-weight: 500;
            color: inherit;
            line-height: 1.5;
        }

        .faq-icon {
            position: relative;
            width: 18px;
            height: 18px;
            flex-shrink: 0;
        }

        .faq-icon::before,
        .faq-icon::after {
            content: "";
            position: absolute;
            background: var(--accent);
            border-radius: 1px;
            transition: all .25s var(--ease);
        }

        .faq-icon::before {
            width: 18px;
            height: 2px;
            top: 8px;
            left: 0;
        }

        .faq-icon::after {
            width: 2px;
            height: 18px;
            left: 8px;
            top: 0;
        }

        .faq-item.open .faq-icon::after {
            transform: scaleY(0);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .3s var(--ease);
        }

        .faq-answer-inner {
            padding: 0 4px 20px;
            color: var(--text-muted);
            font-size: .888rem;
            line-height: 1.65;
            max-width: 720px;
        }

        .faq-answer-inner p {
            margin-bottom: 8px;
        }

        .faq-answer-inner p:last-child {
            margin-bottom: 0;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255,255,255,.68);
            padding: 64px 0 24px;
            font-size: .8125rem;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,.08);
        }

        @media (max-width: 767px) {
            .footer-top {
                grid-template-columns: 1fr;
                gap: 28px;
            }
        }

        .footer-brand .footer-logo {
            font-size: 1.25rem;
            font-weight: 600;
            color: #fff;
            display: block;
            margin-bottom: 10px;
        }

        .footer-brand p {
            font-size: .8125rem;
            line-height: 1.6;
            color: rgba(255,255,255,.6);
            max-width: 260px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: .875rem;
            font-weight: 600;
            margin-bottom: 14px;
        }

        .footer-col a {
            display: block;
            color: rgba(255,255,255,.58);
            font-size: .8125rem;
            padding: 4px 0;
            transition: color .2s;
        }

        .footer-col a:hover {
            color: #fff;
        }

        .footer-mid {
            padding: 20px 0;
            border-bottom: 1px solid rgba(255,255,255,.08);
            font-size: .75rem;
            color: rgba(255,255,255,.4);
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            padding-top: 20px;
            font-size: .75rem;
            color: rgba(255,255,255,.4);
        }

        @media (max-width: 520px) {
            .footer-bottom {
                flex-direction: column;
                gap: 6px;
            }
        }

        /* ===== Reveal animation ===== */
        .reveal {
            opacity: 0;
            transform: translateY(16px);
            transition: opacity .5s var(--ease), transform .5s var(--ease);
        }

        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }

        @media (prefers-reduced-motion: reduce) {
            .reveal {
                opacity: 1;
                transform: none;
                transition: none;
            }

            *,
            *::before,
            *::after {
                animation-duration: .01ms !important;
                transition-duration: .01ms !important;
            }
        }

        /* ===== Section bg variations ===== */
        .bg-white {
            background: #fff;
        }

        .bg-tint {
            background: #F1EDE6;
        }

        /* ===== Focus visible ===== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        @media (max-width: 767px) {
            .section-head h2 {
                font-size: 1.15rem;
            }

            .page-head h1 {
                font-size: 1.6rem;
            }

            .feature-media img {
                height: 220px;
            }

            .intro-image img {
                height: 220px;
            }
        }

/* roulang page: article */
:root {
  --color-primary: #1D3A2F;
  --color-accent: #B8863F;
  --color-bg: #F7F4EE;
  --color-white: #FFFFFF;
  --color-dark: #162820;
  --color-text: #2E2E2E;
  --color-muted: #6F6A61;
  --color-border: #E6E0D6;
  --color-success: #4A7A5B;
  --color-info: #496A85;
  --color-warning: #B05A2E;
  --radius-card: 8px;
  --radius-btn: 6px;
  --radius-badge: 999px;
  --shadow-card: 0 1px 3px rgba(26,42,32,.06), 0 4px 16px rgba(26,42,32,.04);
  --shadow-hover: 0 4px 12px rgba(26,42,32,.08), 0 12px 32px rgba(26,42,32,.08);
  --transition: all .22s ease-out;
  --container-max: 1200px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 1rem;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; background: none; border: none; }
ul, ol { list-style: none; }
::selection { background: rgba(184,134,63,.2); color: #1D3A2F; }

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 6px;
  font-size: .9375rem;
  font-weight: 600;
  padding: 10px 22px;
  line-height: 1.4;
  cursor: pointer;
  transition: var(--transition);
}
.btn-primary {
  background: var(--color-accent);
  color: #fff;
  border: 1.5px solid var(--color-accent);
}
.btn-primary:hover { background: #a27530; border-color: #a27530; }
.btn-primary:active { transform: translateY(1px); }
.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}
.btn-outline:hover { background: rgba(29,58,47,.05); }
.btn-outline:active { transform: translateY(1px); }
.btn-sm { padding: 8px 18px; font-size: .875rem; }
.btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 1px 8px rgba(30,45,38,.05);
}
.header-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.site-logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-mark { display: flex; }
.logo-text {
  font-weight: 700;
  font-size: 1.0625rem;
  color: var(--color-primary);
  letter-spacing: .02em;
  white-space: nowrap;
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 30px;
  position: absolute;
  left: 50%;
  top: 0;
  height: 64px;
  transform: translateX(-50%);
}
.nav-link {
  position: relative;
  font-size: .9375rem;
  color: #4A453D;
  padding: 6px 2px;
  transition: color .2s ease-out;
}
.nav-link:hover { color: var(--color-primary); }
.nav-link.active { color: var(--color-primary); font-weight: 600; }
.nav-link.active::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 2px;
  background: var(--color-accent);
  border-radius: 2px;
}
.nav-link:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: 4px;
}
.header-actions { display: flex; align-items: center; gap: 14px; flex-shrink: 0; }
.nav-search {
  position: relative;
  width: 180px;
  transition: width .22s ease-out;
}
.nav-search:focus-within { width: 220px; }
.nav-search input {
  width: 100%;
  height: 36px;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 0 38px 0 16px;
  font-size: .875rem;
  background: #FAF8F3;
  transition: border-color .2s, box-shadow .2s;
}
.nav-search input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(184,134,63,.15);
}
.nav-search input::placeholder { color: #9A958D; }
.nav-search button {
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  cursor: pointer;
  transition: background .2s;
}
.nav-search button:hover { background: rgba(29,58,47,.06); }
.nav-search button:focus-visible { outline: 2px solid var(--color-accent); }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
}
.nav-toggle span {
  width: 20px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: transform .22s ease-out, opacity .22s ease-out;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.breadcrumb-area {
  padding: 24px 0 0;
  background: var(--color-bg);
}
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: .8125rem;
  color: var(--color-muted);
}
.breadcrumb a { transition: color .2s; }
.breadcrumb a:hover { color: var(--color-primary); }
.breadcrumb .current {
  color: var(--color-text);
  font-weight: 500;
  max-width: 420px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.article-wrap { padding: 40px 0 0; }
.article-header {
  position: relative;
  padding: 40px 0 36px;
  max-width: 860px;
  background: linear-gradient(rgba(247,244,238,.94), rgba(247,244,238,.94)), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  border-bottom: 1px solid var(--color-border);
}
.article-meta-top {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  background: rgba(29,58,47,.08);
  color: var(--color-primary);
  border-radius: 999px;
  font-size: .8125rem;
  font-weight: 600;
}
.article-meta-top time { font-size: .875rem; color: var(--color-muted); }
.article-title {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  line-height: 1.25;
  color: var(--color-primary);
  font-weight: 700;
  margin-bottom: 20px;
  letter-spacing: .01em;
}
.article-summary {
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--color-muted);
  max-width: 760px;
}
.article-cover {
  margin-top: 28px;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.article-cover img {
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 8px;
}

.article-body {
  max-width: 860px;
  padding: 24px 0 48px;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-text);
}
.article-body > * + * { margin-top: 1.25em; }
.article-body p { line-height: 1.85; }
.article-body h2 {
  font-size: 1.5rem;
  color: var(--color-primary);
  margin: 1.8em 0 .8em;
  padding-top: .8em;
  border-top: 1px solid var(--color-border);
}
.article-body h3 {
  font-size: 1.25rem;
  color: var(--color-primary);
  margin: 1.6em 0 .6em;
}
.article-body h4 {
  font-size: 1.0625rem;
  color: var(--color-primary);
  margin: 1.4em 0 .5em;
}
.article-body ul { list-style: disc; padding-left: 1.5em; }
.article-body ol { list-style: decimal; padding-left: 1.5em; }
.article-body li { margin: .5em 0; }
.article-body blockquote {
  border-left: 3px solid var(--color-accent);
  background: #FAF8F3;
  padding: 16px 22px;
  color: var(--color-muted);
  border-radius: 0 8px 8px 0;
}
.article-body img {
  border-radius: 8px;
  margin: 1.5em 0;
  box-shadow: var(--shadow-card);
}
.article-body a {
  color: var(--color-accent);
  border-bottom: 1px solid rgba(184,134,63,.4);
  transition: border-color .2s;
}
.article-body a:hover { border-bottom-color: var(--color-accent); }
.article-body code {
  background: #F0EBE3;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: .9em;
}
.article-body pre {
  background: var(--color-dark);
  color: #F7F4EE;
  padding: 20px 24px;
  border-radius: 8px;
  overflow-x: auto;
  font-size: .875rem;
  line-height: 1.6;
}

.article-tags {
  max-width: 860px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  padding: 28px 0;
  border-top: 1px solid var(--color-border);
}
.tag-label { font-size: .875rem; color: var(--color-muted); margin-right: 4px; }
.tag-item {
  display: inline-flex;
  padding: 4px 14px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: .8125rem;
  color: var(--color-text);
  transition: var(--transition);
}
.tag-item:hover { border-color: var(--color-accent); color: var(--color-primary); }

.related-section {
  background: var(--color-white);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: 72px 0;
}
.related-section .section-title {
  font-size: clamp(1.4rem, 2.2vw, 1.7rem);
  color: var(--color-primary);
  margin-bottom: 36px;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.related-card {
  background: var(--color-bg);
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: var(--transition);
}
.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.related-card .card-img {
  overflow: hidden;
  aspect-ratio: 16 / 9;
}
.related-card .card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .22s ease-out;
}
.related-card:hover .card-img img { transform: scale(1.03); }
.related-card .card-body { padding: 20px 22px 24px; }
.related-card .card-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}
.related-card .card-title {
  font-size: 1.0625rem;
  color: var(--color-primary);
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 8px;
}
.related-card .card-title a { transition: color .2s; }
.related-card .card-title a:hover { color: var(--color-accent); }
.related-card .card-text {
  font-size: .875rem;
  color: var(--color-muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-empty {
  border: 1px dashed var(--color-border);
  border-radius: 8px;
  padding: 36px;
  text-align: center;
  color: var(--color-muted);
  font-size: .875rem;
}

.back-entry {
  padding: 56px 0 72px;
  background: var(--color-bg);
}
.back-entry .container {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.article-not-found {
  max-width: 640px;
  margin: 60px auto 100px;
  text-align: center;
  padding: 60px 40px;
  background: var(--color-white);
  border-radius: 8px;
  border: 1px solid var(--color-border);
}
.article-not-found h1 { font-size: 2rem; color: var(--color-primary); margin-bottom: 16px; }
.article-not-found p { color: var(--color-muted); margin-bottom: 24px; }

.site-footer {
  background: var(--color-dark);
  color: #A8B3AE;
  padding: 64px 0 32px;
  font-size: .8125rem;
}
.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.footer-logo {
  display: block;
  font-size: 1.125rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 14px;
}
.footer-brand p { line-height: 1.7; color: #8A958F; max-width: 360px; }
.footer-col h4 { color: #FFFFFF; margin-bottom: 14px; font-size: .9375rem; font-weight: 600; }
.footer-col a { display: block; color: #8A958F; padding: 4px 0; transition: color .2s; }
.footer-col a:hover { color: #FFFFFF; }
.footer-mid {
  padding: 20px 0;
  border-bottom: 1px solid rgba(255,255,255,.08);
  color: #7C877F;
  text-align: center;
  font-size: .8125rem;
}
.footer-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 20px;
  color: #7C877F;
}

.reveal { opacity: 0; transform: translateY(16px); transition: opacity .5s ease-out, transform .5s ease-out; }
.reveal.visible { opacity: 1; transform: translateY(0); }

@media (max-width: 1023px) {
  .nav-menu {
    position: static;
    transform: none;
    gap: 18px;
    height: auto;
  }
  .nav-search { width: 150px; }
  .nav-search:focus-within { width: 180px; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 767px) {
  .container { padding-left: 16px; padding-right: 16px; }
  .header-inner { height: 56px; }
  .nav-menu {
    position: fixed;
    top: 56px;
    left: 0;
    right: 0;
    background: #FFFFFF;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px 16px 20px;
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 12px 24px rgba(26,42,32,.08);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: opacity .22s ease-out, transform .22s ease-out, visibility .22s;
    height: auto;
  }
  .nav-menu.nav-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
  .nav-link {
    padding: 12px 4px;
    font-size: 1rem;
    border-bottom: 1px solid #F0EBE3;
  }
  .nav-link.active::after { display: none; }
  .nav-link.active { color: var(--color-accent); }
  .nav-search { display: none; }
  .header-actions .btn { display: none; }
  .nav-toggle { display: flex; }

  .breadcrumb-area { padding-top: 16px; }
  .breadcrumb .current { max-width: 220px; }
  .article-wrap { padding-top: 24px; }
  .article-title { font-size: 1.6rem; }
  .article-summary { font-size: .9375rem; }
  .related-grid { grid-template-columns: 1fr; }
  .related-section { padding: 56px 0; }
  .back-entry .container { flex-direction: column; align-items: stretch; }
  .back-entry .btn { width: 100%; }
  .footer-top { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}