/* roulang page: index */
:root {
        --bg: #0B1016;
        --panel: #121921;
        --panel-2: #18212B;
        --brand: #F97316;
        --brand-2: #FB923C;
        --mint: #2DD4BF;
        --text-strong: #E2E8F0;
        --text-muted: #94A3B8;
        --text-dim: #64748B;
        --border-soft: rgba(148, 163, 184, .18);
        --border-strong: rgba(148, 163, 184, .35);
        --green: #22C55E;
        --amber: #F59E0B;
        --red: #EF4444;
        --success-soft: rgba(34, 197, 94, .12);
        --brand-soft: rgba(249, 115, 22, .12);
        --radius-card: 14px;
        --radius-panel: 8px;
        --shadow-card: 0 8px 20px rgba(0, 0, 0, .25);
        --shadow-card-hover: 0 16px 40px rgba(0, 0, 0, .4);
        --header-h: 64px;
        --section-pad: 5rem;
        --sidebar-w: 280px;
    }
    @media (max-width: 767.98px) {
        :root {
            --section-pad: 3rem;
        }
    }

    *,
    *::before,
    *::after {
        box-sizing: border-box;
    }
    html {
        -webkit-text-size-adjust: 100%;
        scroll-behavior: smooth;
    }
    body {
        margin: 0;
        background-color: var(--bg);
        color: var(--text-strong);
        font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
        font-size: 1rem;
        line-height: 1.75;
        -webkit-font-smoothing: antialiased;
        overflow-x: hidden;
    }
    img {
        max-width: 100%;
        display: block;
    }
    a {
        color: var(--text-muted);
        text-decoration: none;
        transition: color .2s ease;
    }
    a:hover {
        color: var(--brand);
    }
    button,
    input,
    select,
    textarea {
        font: inherit;
        color: inherit;
    }
    .container-custom {
        max-width: 1240px;
        margin: 0 auto;
        padding-left: 1.5rem;
        padding-right: 1.5rem;
    }
    @media (max-width: 576px) {
        .container-custom {
            padding-left: 1rem;
            padding-right: 1rem;
        }
    }
    .section {
        padding-block: var(--section-pad);
        position: relative;
    }
    .section-divider {
        border-top: 1px solid var(--border-soft);
    }
    .bg-panel {
        background: linear-gradient(180deg, #151D26, #10161D);
        border: 1px solid var(--border-soft);
        border-radius: var(--radius-card);
        box-shadow: var(--shadow-card);
    }
    .section-title {
        font-size: clamp(1.6rem, 3vw, 2.2rem);
        font-weight: 700;
        letter-spacing: -0.02em;
        margin-bottom: .5rem;
        color: var(--text-strong);
    }
    .section-sub {
        font-size: 0.95rem;
        color: var(--text-muted);
        max-width: 860px;
        line-height: 1.9;
    }
    .tag-badge {
        display: inline-flex;
        align-items: center;
        gap: .4rem;
        padding: .25rem .8rem;
        border-radius: 999px;
        font-size: .78rem;
        font-weight: 500;
        background: rgba(249, 115, 22, .12);
        border: 1px solid rgba(249, 115, 22, .3);
        color: var(--brand-2);
    }
    .tag-badge .dot {
        width: 6px;
        height: 6px;
        border-radius: 50%;
        background: var(--green);
        display: inline-block;
    }
    .badge-soft-green {
        background: var(--success-soft);
        color: var(--green);
        font-size: .76rem;
        padding: .25rem .7rem;
        border-radius: 999px;
    }
    .badge-main {
        background: var(--brand-soft);
        color: var(--brand);
        font-size: .76rem;
        padding: .25rem .8rem;
        border-radius: 999px;
        border: 1px solid rgba(249, 115, 22, .25);
    }
    .text-orange {
        color: var(--brand);
    }
    .text-mint {
        color: var(--mint);
    }
    .mono {
        font-family: ui-monospace, Inter, SFMono-Regular, Menlo, Consolas, monospace;
        letter-spacing: 0.02em;
    }

    /* Buttons */
    .btn-main {
        --bs-btn-bg: linear-gradient(135deg, #F97316, #FB923C);
        --bs-btn-border-color: #e86b13;
        background: linear-gradient(135deg, #F97316, #FB923C);
        border: 1px solid #e86b13;
        color: #0B1016;
        font-weight: 600;
        border-radius: 999px;
        padding: .6rem 1.5rem;
        transition: filter .2s, box-shadow .2s, transform .1s;
        display: inline-flex;
        align-items: center;
        gap: .5rem;
    }
    .btn-main:hover {
        color: #0B1016;
        filter: brightness(1.08);
        box-shadow: 0 0 0 3px rgba(249, 115, 22, .3);
    }
    .btn-main:focus-visible {
        outline: 2px solid var(--brand);
        outline-offset: 2px;
    }
    .btn-ghost {
        background: transparent;
        border: 1px solid var(--border-strong);
        color: var(--text-strong);
        border-radius: 999px;
        padding: .6rem 1.3rem;
        font-weight: 500;
        transition: all .2s;
        display: inline-flex;
        align-items: center;
        gap: .5rem;
    }
    .btn-ghost:hover {
        border-color: var(--mint);
        color: var(--mint);
        background: rgba(45, 212, 191, .05);
    }
    .btn-ghost:focus-visible {
        outline: 2px solid var(--mint);
        outline-offset: 2px;
    }
    .btn-dark {
        background: rgba(255, 255, 255, .06);
        border: 1px solid var(--border-soft);
        color: var(--text-muted);
        border-radius: 8px;
        font-size: .85rem;
        padding: .45rem 1.2rem;
    }
    .btn-dark:hover {
        background: rgba(255, 255, 255, .13);
        color: var(--text-strong);
        border-color: var(--border-strong);
    }
    .btn-sm-icon {
        width: 36px;
        height: 36px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        border-radius: 10px;
        background: rgba(255, 255, 255, .05);
        border: 1px solid var(--border-soft);
        transition: all .2s;
    }
    .btn-sm-icon:hover {
        border-color: var(--brand);
        color: var(--brand);
    }
    .disabled-state {
        opacity: .5;
        pointer-events: none;
    }
    .glow-btn {
        box-shadow: 0 0 0 1px rgba(249, 115, 22, .4), 0 0 14px rgba(249, 115, 22, .14);
    }

    /* Navigation bar */
    .site-header {
        background: rgba(11, 16, 22, .98);
        border-bottom: 1px solid var(--border-soft);
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        z-index: 1080;
        transition: background .2s, border-color .2s;
    }
    .site-header .container-custom {
        height: 64px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 2rem;
    }
    .navbar-brand-box {
        display: flex;
        align-items: center;
        gap: .55rem;
        min-width: fit-content;
    }
    .brand-logo {
        color: #fff;
        font-weight: 800;
        font-size: 1.3rem;
        letter-spacing: .01em;
        white-space: nowrap;
        display: inline-flex;
        align-items: baseline;
    }
    .brand-logo .logo-dot {
        color: var(--brand);
        font-size: 1rem;
        margin-right: .15rem;
        display: inline-block;
        transform: translateY(-2px);
    }
    .brand-logo:hover {
        color: #fff;
    }
    .live-indicator {
        display: inline-flex;
        align-items: center;
        gap: .35rem;
        color: var(--green);
        font-size: .75rem;
        background: var(--success-soft);
        padding: .2rem .7rem;
        border-radius: 999px;
        white-space: nowrap;
    }
    .live-indicator .breathing-dot {
        width: 7px;
        height: 7px;
        border-radius: 50%;
        background: currentColor;
        animation: breathe 2s ease-in-out infinite;
    }
    @keyframes breathe {
        0%,
        100% {
            opacity: 1;
            transform: scale(1);
        }
        50% {
            opacity: .4;
            transform: scale(.7);
        }
    }
    .navbar-primary {
        display: flex;
        align-items: center;
        gap: .25rem;
    }
    .navbar-primary a {
        padding: .4rem .9rem;
        color: var(--text-muted);
        font-size: .93rem;
        border-radius: 10px;
        font-weight: 500;
        transition: all .2s;
        white-space: nowrap;
        display: inline-flex;
        align-items: center;
        gap: .35rem;
    }
    .navbar-primary a:hover {
        color: var(--text-strong);
        background: rgba(255, 255, 255, .05);
    }
    .navbar-primary a.active {
        color: #fff;
        background: rgba(249, 115, 22, .12);
        font-weight: 600;
    }
    .navbar-primary a.active i {
        color: var(--brand);
    }
    .navbar-actions {
        display: flex;
        align-items: center;
        gap: .55rem;
    }
    .navbar-actions .status-strip {
        display: inline-flex;
        align-items: center;
        gap: .35rem;
        color: var(--mint);
        font-size: .78rem;
        border: 1px solid rgba(45, 212, 191, .3);
        padding: .2rem .7rem;
        border-radius: 999px;
        white-space: nowrap;
    }
    .feedback-btn {
        border-radius: 999px;
        background: linear-gradient(135deg, #F97316, #FB923C);
        border: none;
        color: #0B1016;
        font-size: .86rem;
        font-weight: 600;
        padding: .43rem 1.05rem;
        transition: all .2s;
        white-space: nowrap;
        display: inline-flex;
        align-items: center;
        gap: .35rem;
        cursor: pointer;
    }
    .feedback-btn:hover {
        filter: brightness(1.1);
        color: #0B1016;
        box-shadow: 0 4px 14px rgba(249, 115, 22, .24);
    }
    .js-menu-toggle {
        display: none;
        background: none;
        border: 1px solid var(--border-soft);
        border-radius: 8px;
        color: var(--text-strong);
        font-size: 1.2rem;
        padding: 0 8px;
        height: 38px;
    }
    @media (max-width: 1024px) {
        .navbar-primary {
            display: none;
        }
        .js-menu-toggle {
            display: inline-flex;
            align-items: center;
        }
        .site-header .container-custom {
            gap: 1rem;
        }
        .navbar-actions .status-strip {
            display: none;
        }
        .mobile-nav {
            display: none;
            position: absolute;
            top: 64px;
            left: 0;
            width: 100%;
            background: var(--panel);
            border-bottom: 1px solid var(--border-soft);
        }
        .mobile-nav.open {
            display: block;
        }
        .mobile-nav .container-custom {
            display: flex;
            flex-direction: column;
            padding-block: 1rem;
        }
        .mobile-nav a {
            color: var(--text-muted);
            padding: .6rem .5rem;
            border-bottom: 1px solid rgba(148, 163, 184, .08);
            display: flex;
            align-items: center;
            gap: .6rem;
        }
        .mobile-nav a i {
            color: var(--brand);
            width: 18px;
        }
        .mobile-nav a:last-child {
            border-bottom: none;
        }
        .mobile-nav a:hover {
            color: #fff;
            background: var(--panel-2);
        }
        .mobile-nav .navbar-actions-mobile {
            display: flex;
            padding-top: .8rem;
        }
    }
    @media (min-width: 1025px) {
        .mobile-nav {
            display: none !important;
        }
    }

    /* Page body */
    .page-main {
        padding-top: 64px;
    }

    /* ---- Hero 区块 (5.1) ---- */
    .hero-section {
        position: relative;
        padding: 100px 0 70px;
    }
    @media (min-width: 992px) {
        .hero-section {
            padding: 120px 0 100px;
        }
    }
    .hero-bg-wrap {
        position: absolute;
        inset: 0;
        z-index: 0;
        background-image: url('/assets/images/backpic/back-3.jpg');
        background-size: cover;
        background-position: center 28%;
        opacity: .32;
    }
    .hero-bg-wrap::after {
        content: "";
        position: absolute;
        inset: 0;
        background: radial-gradient(60% 100% at 20% 0%, rgba(249, 115, 22, .12) 0%, transparent 55%),
            linear-gradient(180deg, rgba(11, 16, 22, .2) 0%, var(--bg) 100%);
    }
    .hero-inner {
        position: relative;
        z-index: 2;
    }
    .hero-title {
        font-size: clamp(2rem, 5vw, 4rem);
        line-height: 1.15;
        font-weight: 800;
        letter-spacing: -.03em;
        margin: .4rem 0 1.4rem;
    }
    .hero-title .grad-text {
        background: linear-gradient(135deg, var(--brand), var(--brand-2));
        -webkit-background-clip: text;
        background-clip: text;
        color: transparent;
    }
    .hero-section .lead {
        color: var(--text-muted);
        font-size: 1rem;
        line-height: 1.9;
        max-width: 640px;
    }
    .hero-cta {
        display: flex;
        flex-wrap: wrap;
        gap: .8rem;
        margin-top: 1.6rem;
    }
    .hero-stats {
        display: flex;
        flex-wrap: wrap;
        gap: 2rem;
        margin-top: 2.4rem;
        list-style: none;
        padding-left: 0;
    }
    .hero-stats li {
        display: flex;
        flex-direction: column;
        gap: .2rem;
    }
    .hero-stats .stat-num {
        font-size: 1.2rem;
        font-weight: 700;
        font-family: ui-monospace, Menlo, Consolas, monospace;
        color: #fff;
        display: flex;
        align-items: baseline;
        gap: .25rem;
    }
    .hero-stats .stat-num i {
        color: var(--mint);
        font-size: 1rem;
    }
    .hero-stats .stat-label {
        font-size: .8rem;
        color: var(--text-dim);
    }
    .hero-panel {
        background: linear-gradient(165deg, #19212B 0%, #0E141B 100%);
        border: 1px solid var(--border-soft);
        border-radius: 16px;
        box-shadow: 0 25px 50px rgba(0, 0, 0, .6);
        overflow: hidden;
        position: relative;
    }
    .panel-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: .8rem 1.2rem;
        border-bottom: 1px solid var(--border-soft);
        background: rgba(255, 255, 255, .02);
    }
    .panel-title-box .panel-eyebrow {
        font-size: .7rem;
        letter-spacing: .08em;
        color: var(--text-dim);
        margin-bottom: .1rem;
    }
    .panel-title-box .panel-headline {
        font-size: .95rem;
        font-weight: 600;
        color: #fff;
    }
    .panel-live {
        display: inline-flex;
        gap: .35rem;
        align-items: center;
        color: var(--green);
        font-size: .75rem;
        background: var(--success-soft);
        border-radius: 999px;
        padding: .2rem .75rem;
    }
    .panel-list {
        padding: .5rem .9rem;
    }
    .panel-list .list-item {
        display: flex;
        align-items: center;
        gap: .65rem;
        padding: .55rem .4rem;
        border-bottom: 1px solid rgba(148, 163, 184, .08);
    }
    .panel-list .list-item:last-child {
        border-bottom: none;
    }
    .panel-list .item-state {
        width: 7px;
        height: 7px;
        border-radius: 50%;
        flex-shrink: 0;
    }
    .state-green {
        background: var(--green);
        box-shadow: 0 0 8px rgba(34, 197, 94, .6);
    }
    .state-orange {
        background: var(--amber);
        box-shadow: 0 0 8px rgba(245, 158, 11, .4);
    }
    .state-red {
        background: var(--red);
    }
    .panel-list .item-title {
        color: var(--text-strong);
        font-size: .85rem;
        font-weight: 500;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        flex: 1;
    }
    .panel-list .item-meta {
        color: var(--text-dim);
        font-size: .76rem;
        white-space: nowrap;
    }
    .panel-footer-bar {
        padding: .6rem 1.2rem;
        display: flex;
        justify-content: space-between;
        border-top: 1px solid rgba(148, 163, 184, .1);
        background: rgba(11, 16, 22, .7);
        font-size: .79rem;
        color: var(--text-muted);
    }
    .panel-footer-bar .up-seq {
        color: var(--mint);
        font-family: ui-monospace, monospace;
    }
    .panel-footer-bar .update-time {
        color: var(--text-dim);
        font-family: ui-monospace, monospace;
    }

    /* ---- 栏目区块 cards ---- */
    .index-card {
        background: linear-gradient(180deg, #151D26, #10161D);
        border: 1px solid var(--border-soft);
        border-radius: var(--radius-card);
        height: 100%;
        position: relative;
        transition: transform .25s, box-shadow .25s, border-color .25s;
        overflow: hidden;
        display: flex;
        flex-direction: column;
    }
    .index-card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-card-hover);
        border-color: rgba(249, 115, 22, .28);
    }
    .index-card .card-top-border {
        position: absolute;
        top: 0;
        left: 0;
        height: 2px;
        width: 100%;
        background: linear-gradient(90deg, rgba(249, 115, 22, .85), rgba(249, 115, 22, 0));
        opacity: .6;
        transition: opacity .25s;
    }
    .index-card:hover .card-top-border {
        opacity: 1;
    }
    .index-card .card-body-inner {
        padding: 1.5rem 1.4rem 1.2rem;
        display: flex;
        flex-direction: column;
        flex: 1;
    }
    .card-icon-box {
        margin-bottom: 1.2rem;
    }
    .card-icon-box .icon-square {
        width: 46px;
        height: 46px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        background: linear-gradient(135deg, rgba(249, 115, 22, .18), rgba(249, 115, 22, .05));
        color: var(--brand);
        border-radius: 12px;
        border: 1px solid rgba(249, 115, 22, .2);
        font-size: 1.3rem;
    }
    .card-title-lg {
        font-size: 1.1rem;
        font-weight: 700;
        margin-bottom: .6rem;
        color: #fff;
        letter-spacing: -0.01em;
    }
    .card-text-sm {
        font-size: .88rem;
        color: var(--text-muted);
        line-height: 1.7;
        margin-bottom: 1.1rem;
        flex: 1;
    }
    .card-tag-group {
        display: flex;
        flex-wrap: wrap;
        gap: .4rem;
    }
    .mini-tag {
        font-size: .75rem;
        color: var(--text-muted);
        background: rgba(255, 255, 255, .04);
        border: 1px solid var(--border-soft);
        padding: .2rem .55rem;
        border-radius: 6px;
        transition: all .2s;
        cursor: default;
    }
    .mini-tag:hover {
        color: var(--mint);
        border-color: rgba(45, 212, 191, .3);
    }
    .resource-mini-list {
        list-style: none;
        padding: 0;
        margin: 0 0 1.2rem 0;
    }
    .resource-mini-list li {
        display: flex;
        align-items: center;
        gap: .5rem;
        font-size: .84rem;
        color: var(--text-muted);
        padding: .4rem 0;
        border-bottom: 1px dashed rgba(148, 163, 184, .12);
    }
    .resource-mini-list li:last-child {
        border-bottom: none;
    }
    .resource-mini-list .rx {
        color: var(--text-dim);
        font-size: .7rem;
        font-family: ui-monospace, monospace;
        width: 18px;
        flex-shrink: 0;
    }
    .resource-mini-list .color-up {
        color: var(--mint);
        font-size: .72rem;
        margin-left: auto;
    }
    .card-chart-mock {
        width: 96px;
        height: 96px;
        border-radius: 50%;
        background: conic-gradient(var(--mint) 0% 71%, rgba(255, 255, 255, .08) 71% 100%);
        display: flex;
        align-items: center;
        justify-content: center;
        margin: .4rem auto 1.2rem auto;
        position: relative;
    }
    .card-chart-mock::before {
        content: "";
        background: #10161D;
        border-radius: 50%;
        width: 68%;
        height: 68%;
        position: absolute;
    }
    .card-chart-mock span {
        position: relative;
        z-index: 2;
        font-size: .85rem;
        color: var(--mint);
        font-weight: 700;
    }
    .mini-label-with-dot {
        display: flex;
        align-items: center;
        justify-content: space-between;
        font-size: .8rem;
        color: var(--text-dim);
        margin-top: .3rem;
    }
    .card-cover-side {
        position: relative;
        overflow: hidden;
        border-radius: calc(var(--radius-card) - 2px) 0 0 calc(var(--radius-card) - 2px);
        height: 100%;
        min-height: 210px;
        background-color: #0D1219;
    }
    .card-cover-side img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform .8s cubic-bezier(.2, .6, .2, 1);
    }
    .index-card:hover .card-cover-side img {
        transform: scale(1.05);
    }
    .card-cover-side .cover-overlay {
        position: absolute;
        inset: 0;
        background: linear-gradient(0deg, rgba(11, 16, 22, .58) 0%, rgba(11, 16, 22, 0) 48%);
    }
    .card-cover-side .cover-position-badge {
        position: absolute;
        left: 1rem;
        top: 1rem;
    }
    .cover-position-badge .cover-key {
        background: rgba(11, 16, 22, .8);
        color: var(--text-strong);
        padding: .25rem .75rem;
        border-radius: 6px;
        font-size: .75rem;
    }

    .enter-link-text {
        display: inline-flex;
        align-items: center;
        gap: .3rem;
        color: var(--brand);
        font-size: .88rem;
        font-weight: 600;
        margin-top: 1rem;
    }
    .enter-link-text i {
        font-size: .9rem;
        transition: transform .2s;
    }
    .enter-link-text:hover i {
        transform: translateX(4px);
    }

    /* --- 优劣数据 (5.3) --- */
    .stats-data-area {
        border: 1px solid var(--border-soft);
        border-radius: 16px;
        background: linear-gradient(145deg, #141B24, #0D121A);
        position: relative;
        overflow: hidden;
    }
    .data-line-l {
        position: absolute;
        left: 0;
        top: 18%;
        width: 140px;
        height: 2px;
        background: linear-gradient(90deg, rgba(249, 115, 22, .5), transparent);
        filter: blur(1px);
    }
    .data-line-l::after {
        content: "";
        position: absolute;
        right: 114px;
        top: -30px;
        width: 70px;
        height: 70px;
        background: rgba(249, 115, 22, .18);
        filter: blur(40px);
        border-radius: 50%;
    }
    .data-cell {
        padding: 2rem 1.2rem;
        position: relative;
    }
    .data-cell+.data-cell {
        border-left: 1px solid rgba(148, 163, 184, .12);
    }
    @media (max-width:992px) {
        .data-cell:nth-child(3) {
            border-left: 0;
        }
    }
    .data-num-row {
        display: flex;
        align-items: flex-end;
        gap: .3rem;
        font-size: 2rem;
        font-weight: 800;
        color: #fff;
        line-height: 1.2;
        margin-bottom: .4rem;
        font-family: "Inter", ui-monospace, monospace;
    }
    .data-num-row .suffix {
        font-size: .95rem;
        color: var(--text-dim);
        font-weight: 500;
        margin-inline-start: 2px;
    }
    .data-num-row .symbol {
        color: var(--brand);
        font-size: 1.4rem;
        margin-inline-end: 4px;
    }
    .data-descr {
        color: var(--text-muted);
        font-size: .88rem;
        line-height: 1.7;
        padding-right: .4rem;
    }
    .cell-footer {
        margin-top: 1rem;
        display: flex;
        align-items: center;
        gap: .5rem;
        font-size: .78rem;
    }
    .trend-green {
        display: inline-flex;
        align-items: center;
        gap: .25rem;
        color: var(--green);
        font-size: .78rem;
    }
    .trend-green i {
        font-size: .7rem;
    }

    /* --- 使用路径 (5.4) --- */
    .case-path-item {
        border: 1px solid var(--border-soft);
        border-radius: 14px;
        background: linear-gradient(135deg, rgba(24, 33, 43, .5) 0%, rgba(14, 20, 27, .9) 100%);
        overflow: hidden;
        transition: border-color .25s;
    }
    .case-path-item:hover {
        border-color: rgba(45, 212, 191, .25);
    }
    .case-path-header {
        padding: 1.1rem 1.2rem;
        display: flex;
        justify-content: space-between;
        align-items: center;
        border-bottom: 1px solid var(--border-soft);
        background: rgba(11, 16, 22, .5);
    }
    .case-step-tag {
        font-weight: 700;
        color: var(--brand);
        font-size: .78rem;
    }
    .case-path-body {
        display: grid;
        grid-template-columns: 1fr 58px 1fr;
        align-items: center;
        gap: 1rem;
        padding: 1.3rem 1.2rem;
    }
    @media (max-width:768px) {
        .case-path-body {
            grid-template-columns: 1fr;
        }
        .case-arrow-col {
            transform: rotate(90deg);
            justify-content: center;
        }
    }
    .case-arrow-col {
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--text-dim);
        font-size: 1.4rem;
    }
    .case-arrow-col .arrow-ic {
        border: 1px solid var(--border-strong);
        width: 44px;
        height: 44px;
        border-radius: 50%;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        background: rgba(255, 255, 255, .02);
        color: var(--mint);
        font-size: 1.1rem;
    }
    .case-left,
    .case-right {
        min-width: 0;
    }
    .case-common-title {
        font-size: .78rem;
        color: var(--text-dim);
        letter-spacing: .05em;
        text-transform: uppercase;
        margin-bottom: .4rem;
        display: block;
    }
    .case-text-title {
        font-size: .96rem;
        font-weight: 600;
        color: var(--text-strong);
        margin-bottom: .3rem;
    }
    .case-text-p {
        font-size: .85rem;
        color: var(--text-muted);
        line-height: 1.7;
        margin-bottom: 0;
    }
    .case-right-flag {
        border-left: 2px solid rgba(249, 115, 22, .4);
        padding-left: .9rem;
    }
    .case-right-flag .case-common-title {
        color: var(--brand);
    }
    @media (max-width:768px) {
        .case-right-flag {
            border-left: 0;
            border-top: 2px solid rgba(249, 115, 22, .3);
            padding-top: .8rem;
            padding-left: 0;
        }
    }

    /* --- 普通 vs 91免费版 (5.5) --- */
    .compare-panel {
        border-radius: 14px;
        border: 1px solid var(--border-soft);
        background: #121921;
        height: 100%;
    }
    .compare-panel.highlight-panel {
        border-color: rgba(249, 115, 22, .45);
        box-shadow: 0 0 0 1px rgba(249, 115, 22, .15), 0 14px 30px rgba(249, 115, 22, .07);
    }
    .compare-panel-header {
        padding: 1rem 1.3rem;
        border-bottom: 1px solid var(--border-soft);
        display: flex;
        justify-content: space-between;
        align-items: center;
    }
    .compare-panel-title {
        font-weight: 700;
        font-size: 1rem;
    }
    .compare-panel-body {
        padding: 1.3rem;
    }
    .compare-list {
        list-style-type: none;
        padding-left: 0;
        margin: 0;
    }
    .compare-list li {
        position: relative;
        padding: .55rem 0 .55rem 1.8rem;
        color: var(--text-muted);
        font-size: .92rem;
        line-height: 1.7;
    }
    .compare-list li::before,
    .compare-list li.un-check::before {
        position: absolute;
        left: 0;
        top: .58rem;
        width: 18px;
        height: 18px;
        border-radius: 50%;
        font-size: .72rem;
        display: flex;
        align-items: center;
        justify-content: center;
        line-height: 1;
    }
    .compare-list .check-li::before {
        content: "✓";
        background: rgba(34, 197, 94, .16);
        color: var(--green);
    }
    .compare-list .un-li::before {
        content: "✕";
        background: rgba(239, 68, 68, .14);
        color: var(--red);
    }
    .compare-list .badge-x {
        color: var(--red);
    }
    .quote-block {
        border: 1px dashed var(--border-strong);
        border-radius: 10px;
        padding: .9rem 1rem;
        font-size: .84rem;
        color: var(--text-muted);
        background: rgba(255, 255, 255, .02);
        margin-top: 1.2rem;
        position: relative;
    }
    .quote-block .quote-icon {
        color: var(--brand);
        margin-right: .3rem;
    }
    .quote-block .quote-author {
        margin-top: .4rem;
        font-size: .78rem;
        color: var(--text-dim);
        font-style: normal;
        display: flex;
        gap: .4rem;
        align-items: center;
    }
    .quote-block .quote-author::before {
        content: "—";
    }

    /* --- FAQ (5.6) --- */
    .faq-side-nav {
        font-size: .9rem;
        padding: 0;
        list-style: none;
        border: 0;
        position: sticky;
        top: 80px;
    }
    .faq-side-nav a {
        display: block;
        padding: .38rem .7rem;
        border-radius: 8px;
        color: var(--text-muted);
        font-size: .87rem;
        margin-bottom: .6rem;
    }
    .faq-side-nav a:hover {
        background: rgba(255, 255, 255, .04);
        color: #fff;
    }
    .faq-side-nav a .mint-dot {
        margin-right: .5rem;
        opacity: 0;
    }
    .faq-side-nav a.active {
        background: rgba(249, 115, 22, .12);
        color: var(--brand-2);
        font-weight: 600;
    }
    .faq-side-nav a.active .mint-dot {
        opacity: 1;
        color: var(--brand);
    }
    .faq-accordion .card-dark {
        background: #121921;
        border: 1px solid var(--border-soft) !important;
        border-radius: 12px !important;
        margin-bottom: .7rem;
        overflow: hidden;
        backdrop-filter: none;
    }
    .faq-accordion .card-dark .accordion-button {
        background: transparent;
        color: var(--text-strong);
        font-weight: 600;
        box-shadow: none;
        padding: 1.2rem 1.4rem;
        font-size: .96rem;
    }
    .faq-accordion .card-dark .accordion-button:not(.collapsed) {
        background: rgba(249, 115, 22, .05);
        color: #fff;
    }
    .faq-accordion .card-dark .accordion-button::after {
        filter: brightness(0) invert(1);
        opacity: .6;
    }
    .faq-accordion .card-dark .accordion-button:focus {
        outline: 2px solid rgba(249, 115, 22, .4);
        outline-offset: -2px;
    }
    .faq-accordion .card-dark .accordion-body {
        color: var(--text-muted);
        font-size: .91rem;
        line-height: 1.85;
        padding: .2rem 1.4rem 1.3rem;
    }

    /* --- Contact / Feedback 5.7 --- */
    .contact-row {
        display: grid;
        grid-template-columns: 1fr 1.2fr;
        gap: 2rem;
    }
    @media (max-width: 992px) {
        .contact-row {
            grid-template-columns: 1fr;
        }
    }
    .contact-card {
        background: linear-gradient(150deg, #141c25, #0e141b);
        border: 1px solid var(--border-soft);
        border-radius: 16px;
        padding: 1.7rem;
    }
    .contact-email-row {
        display: flex;
        align-items: center;
        gap: .8rem;
        margin-bottom: 1.5rem;
        border-bottom: 1px solid var(--border-soft);
        padding-bottom: 1.3rem;
    }
    .mail-symbol {
        width: 44px;
        height: 44px;
        border-radius: 12px;
        display: flex;
        align-items: center;
        justify-content: center;
        background: rgba(45, 212, 191, .1);
        color: var(--mint);
        border: 1px solid rgba(45, 212, 191, .2);
        font-size: 1.2rem;
    }
    .contact-tip {
        padding-left: 1.2rem;
        border-left: 2px solid rgba(249, 115, 22, .3);
        font-size: .87rem;
        color: var(--text-muted);
        line-height: 1.9;
        margin-top: 1.4rem;
    }
    .form-card-back .form-label {
        font-size: .84rem;
        color: var(--text-strong);
        margin-bottom: .3rem;
    }
    .form-control-dark {
        background-color: #0D1219;
        border: 1px solid var(--border-soft);
        color: #fff;
        border-radius: 8px;
        min-height: 44px;
        transition: border-color .2s, box-shadow .2s;
    }
    .form-control-dark:focus {
        background-color: #0D1219;
        border-color: var(--brand);
        box-shadow: 0 0 0 4px rgba(249, 115, 22, .15);
        color: #fff;
    }
    .form-control-dark::placeholder {
        color: #64748B;
    }
    .form-select-dark option {
        color: #fff;
        background: #121921;
    }
    .form-text-dark {
        font-size: .8rem;
        color: var(--text-dim);
    }
    .chip-group {
        display: flex;
        flex-wrap: wrap;
        gap: .6rem;
    }
    .chip-radio {
        position: relative;
    }
    .chip-radio input[type="radio"] {
        position: absolute;
        appearance: none;
        opacity: 0;
    }
    .chip-radio .chip-label {
        border: 1px solid var(--border-soft);
        border-radius: 999px;
        padding: .45rem 1.1rem;
        font-size: .84rem;
        background: transparent;
        color: var(--text-muted);
        display: block;
        cursor: pointer;
        transition: all .2s;
        white-space: nowrap;
    }
    .chip-radio input:checked+.chip-label {
        background: rgba(249, 115, 22, .12);
        border-color: rgba(249, 115, 22, .5);
        color: var(--brand-2);
        font-weight: 500;
    }
    .chip-radio:hover .chip-label {
        border-color: var(--border-strong);
        color: var(--text-strong);
    }
    .chip-radio input:focus-visible+.chip-label {
        outline: 2px solid var(--brand);
        outline-offset: 2px;
    }

    /* ----- Floating CTA bottom mobile ----- */
    .floating-cta-bar {
        position: fixed;
        left: 1rem;
        right: 1rem;
        bottom: 1.4rem;
        background: #121921;
        border: 1px solid rgba(249, 115, 22, .35);
        border-radius: 14px;
        box-shadow: 0 12px 40px rgba(0, 0, 0, .55);
        padding: .6rem .9rem .8rem;
        display: none;
        z-index: 1050;
    }
    .float-cta-p-holder {
        font-size: .8rem;
        color: var(--text-muted);
    }
    .float-cta-review-box {
        margin-bottom: .5rem;
    }
    .float-cta-history {
        font-size: .7rem;
        color: var(--text-dim);
    }
    @media (max-width: 767px) {
        .floating-cta-bar {
            display: block;
        }
        .contact-row {
            padding-bottom: 90px;
        }
    }
    @media (min-width:768px) {
        .floating-cta-bar {
            display: none;
        }
    }

    .btn-arrow-up {
        background: rgba(255, 255, 255, .03);
        border: 1px solid var(--border-soft);
        border-radius: 8px;
        width: 36px;
        height: 36px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        color: var(--text-muted);
    }
    .btn-arrow-up:hover {
        color: var(--brand);
        border-color: rgba(249, 115, 22, .5);
    }

    /* --- Footer (5.8) --- */
    .site-footer {
        border-top: 1px solid rgba(148, 163, 184, .15);
        background: #0A0E14;
        padding-top: 3rem;
        padding-bottom: 1rem;
    }
    .footer-link-line {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: .4rem 2rem;
        padding-bottom: 2rem;
        margin-bottom: 2rem;
        border-bottom: 1px solid var(--border-soft);
    }
    .footer-link-line a {
        color: var(--text-muted);
        font-size: .92rem;
        transition: color .2s;
    }
    .footer-brand-row {
        margin-bottom: 1.6rem;
    }
    .footer-brand-row .brand-logo {
        font-size: 1.5rem;
    }
    .footer-description {
        color: var(--text-muted);
        font-size: .9rem;
        max-width: 650px;
        line-height: 1.9;
    }
    .footer-copyright {
        padding-top: 1.4rem;
        margin-top: 1.6rem;
        border-top: 1px solid var(--border-soft);
        color: var(--text-dim);
        font-size: .82rem;
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
        align-items: center;
    }
    .footer-copyright .copyright-col span {
        font-family: ui-monospace, "SF Mono", monospace;
        margin-right: .2rem;
    }
    .footer-status-note {
        color: var(--text-dim);
    }
    .footer-status-note i {
        color: var(--mint);
        margin-right: .2rem;
    }

    /* --- Reveal animations --- */
    .reveal {
        opacity: 0;
        transform: translateY(16px);
        transition: opacity .6s ease, transform .6s ease;
        will-change: opacity, transform;
    }
    .reveal.in-view {
        opacity: 1;
        transform: translateY(0);
    }
    @media (prefers-reduced-motion: reduce) {
        .reveal,
        .hero-reveal-item {
            opacity: 1 !important;
            transform: none !important;
            transition: none !important;
            animation: none !important;
        }
        .live-indicator .breathing-dot {
            animation: none;
        }
    }

    /* ScrollBar minimal */
    ::-webkit-scrollbar {
        width: 9px;
        height: 9px;
    }
    ::-webkit-scrollbar-track {
        background: #0B1016;
    }
    ::-webkit-scrollbar-thumb {
        background: #26313C;
        border-radius: 6px;
    }
    ::-webkit-scrollbar-thumb:hover {
        background: #37424E;
    }

/* roulang page: category1 */
:root {
  --bg: #0B1016;
  --panel: #121921;
  --panel-2: #18212B;
  --brand: #F97316;
  --brand-2: #FB923C;
  --mint: #2DD4BF;
  --text-strong: #E2E8F0;
  --text-muted: #94A3B8;
  --text-dim: #64748B;
  --border-soft: rgba(148,163,184,.18);
  --border-strong: rgba(148,163,184,.35);
  --green: #22C55E;
  --amber: #F59E0B;
  --red: #EF4444;
  --success-soft: rgba(34,197,94,.12);
  --brand-soft: rgba(249,115,22,.12);
  --mint-soft: rgba(45,212,191,.1);
  --radius-card: 14px;
  --radius-panel: 8px;
  --shadow-card: 0 8px 20px rgba(0,0,0,.25);
  --shadow-card-hover: 0 16px 40px rgba(0,0,0,.4);
  --header-h: 64px;
  --section-pad: 5rem;
}
html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:90px;
}
*{box-sizing:border-box}
body{
  margin:0;
  background:var(--bg);
  color:var(--text-strong);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:1rem;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  display:flex;
  flex-direction:column;
  min-height:100vh;
  padding-top:var(--header-h);
}
img{max-width:100%;display:block}
a{color:var(--text-muted);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand)}
button,input,select,textarea{font:inherit;color:inherit}
::placeholder{color:var(--text-dim)}
.container-custom{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding-left:1.5rem;
  padding-right:1.5rem;
}
.section{
  padding-block:var(--section-pad);
  position:relative;
}
.section-divider{
  border-top:1px solid var(--border-soft);
}
.section-kicker{
  display:inline-flex;
  align-items:center;
  gap:.4rem;
  padding:.28rem .85rem;
  border-radius:999px;
  font-size:.78rem;
  font-weight:500;
  background:var(--brand-soft);
  border:1px solid rgba(249,115,22,.28);
  color:var(--brand-2);
}
.section-kicker .dot{
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--green);
  display:inline-block;
}
.section-title{
  font-size:clamp(1.6rem,3vw,2.3rem);
  font-weight:700;
  letter-spacing:-.02em;
  color:var(--text-strong);
  margin-bottom:.5rem;
}
.section-sub{
  font-size:.95rem;
  color:var(--text-muted);
  max-width:860px;
  line-height:1.9;
}
.text-muted-2{font-size:.85rem;color:var(--text-muted)}

/* buttons */
.btn-main{
  background:linear-gradient(135deg,#F97316,#FB923C);
  border:1px solid #e86b13;
  color:#0B1016;
  font-weight:600;
  border-radius:999px;
  padding:.6rem 1.5rem;
  display:inline-flex;
  align-items:center;
  gap:.55rem;
  transition:filter .2s,box-shadow .2s,transform .1s;
}
.btn-main:hover{
  color:#0B1016;
  filter:brightness(1.08);
  box-shadow:0 0 0 3px rgba(249,115,22,.3);
}
.btn-main:focus-visible,
.btn-ghost:focus-visible,
.btn-dark:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:2px;
}
.btn-ghost{
  background:transparent;
  border:1px solid var(--border-strong);
  color:var(--text-strong);
  border-radius:999px;
  padding:.55rem 1.3rem;
  font-weight:500;
  display:inline-flex;
  align-items:center;
  gap:.5rem;
  transition:all .2s;
}
.btn-ghost:hover{
  color:var(--mint);
  border-color:var(--mint);
  background:var(--mint-soft);
}
.btn-dark{
  background:rgba(255,255,255,.06);
  border:1px solid var(--border-soft);
  color:var(--text-muted);
  border-radius:10px;
  font-size:.85rem;
  padding:.42rem 1.1rem;
  display:inline-flex;
  align-items:center;
  gap:.5rem;
  transition:all .2s;
}
.btn-dark:hover{
  background:rgba(255,255,255,.12);
  color:var(--text-strong);
  border-color:var(--border-strong);
}
.badge-soft-green{
  background:var(--success-soft);
  color:var(--green);
  font-size:.76rem;
  padding:.28rem .75rem;
  border-radius:999px;
  border:1px solid rgba(34,197,94,.25);
}
.badge-main{
  background:var(--brand-soft);
  color:var(--brand);
  font-size:.76rem;
  padding:.3rem .85rem;
  border-radius:999px;
  border:1px solid rgba(249,115,22,.25);
}
.badge-amber{
  background:rgba(245,158,11,.12);
  color:var(--amber);
  border:1px solid rgba(245,158,11,.25);
  border-radius:999px;
  font-size:.76rem;
  padding:.3rem .8rem;
}
.text-orange{color:var(--brand)}
.text-mint{color:var(--mint)}

/* header */
.site-header{
  background:rgba(11,16,22,.98);
  border-bottom:1px solid var(--border-soft);
  position:fixed;
  top:0;
  left:0;
  width:100%;
  z-index:1080;
}
.header-bar{
  height:var(--header-h);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1rem;
}
.brand-logo{
  display:inline-flex;
  align-items:center;
  gap:.55rem;
  color:#fff;
  font-weight:800;
  font-size:1.28rem;
  white-space:nowrap;
  letter-spacing:-.02em;
}
.brand-logo:hover{color:#fff}
.logo-dot{
  display:inline-flex;
  width:24px;
  height:24px;
  align-items:center;
  justify-content:center;
  border-radius:8px;
  font-size:.85rem;
  color:#fff;
  background:linear-gradient(135deg,#F97316,#FB923C);
  box-shadow:0 0 12px rgba(249,115,22,.35);
}
.brand-status{
  font-size:.68rem;
  color:var(--green);
  border:1px solid rgba(34,197,94,.3);
  background:rgba(34,197,94,.1);
  padding:.12rem .5rem;
  border-radius:999px;
  display:inline-flex;
  align-items:center;
  gap:.3rem;
  margin-left:.15rem;
}
.brand-status i{font-size:.55rem}
.navbar-toggler{
  display:flex;
  align-items:center;
  justify-content:center;
  width:40px;
  height:40px;
  border:1px solid var(--border-soft);
  background:rgba(255,255,255,.05);
  border-radius:10px;
  color:var(--text-strong);
  margin-left:auto;
}
.navbar-toggler:hover{color:var(--brand);border-color:var(--border-strong)}
.navbar-toggler:focus{box-shadow:0 0 0 .2rem rgba(249,115,22,.2)}
.nav-inner{
  border-top:1px solid var(--border-soft);
  padding:.6rem 0 1rem;
  display:flex;
  flex-direction:column;
  gap:.55rem;
}
@media(min-width:992px){
  .nav-inner{
    border-top:0;
    flex-direction:row;
    align-items:center;
    justify-content:space-between;
    padding:0;
    gap:1.25rem;
  }
  .header-bar .navbar-toggler{display:none}
}
.navbar-primary{
  display:flex;
  flex-direction:column;
  align-items:flex-start;
  gap:.35rem;
  min-width:0;
}
@media(min-width:992px){
  .navbar-primary{
    flex-direction:row;
    align-items:center;
    gap:.25rem;
    margin:0 auto;
    padding-left:1rem;
    padding-right:1rem;
    flex:1;
  }
  .nav-inner{justify-content:flex-start}
}
.navbar-primary a{
  display:inline-flex;
  align-items:center;
  gap:.48rem;
  color:var(--text-muted);
  font-size:.92rem;
  font-weight:500;
  padding:.5rem .8rem;
  border-radius:10px;
  transition:all .2s;
}
.navbar-primary a i{color:var(--text-dim);transition:color .2s}
.navbar-primary a:hover{
  color:#fff;
  background:rgba(255,255,255,.06);
}
.navbar-primary a:hover i{color:var(--brand-2)}
.navbar-primary a.active{
  color:#fff;
  background:var(--brand-soft);
  box-shadow:inset 0 0 0 1px rgba(249,115,22,.3);
}
.navbar-primary a.active i{color:var(--brand)}
.header-actions{
  display:flex;
  align-items:center;
  gap:.6rem;
  flex-wrap:wrap;
}
.header-actions .header-live-badge{
  display:inline-flex;
  align-items:center;
  gap:.35rem;
  font-size:.76rem;
  color:var(--text-muted);
  border:1px solid var(--border-soft);
  background:rgba(255,255,255,.04);
  border-radius:999px;
  padding:.28rem .7rem;
}
.header-actions .header-live-badge i{color:var(--green);font-size:.8rem}
.icon-notice{
  width:36px;
  height:36px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:10px;
  border:1px solid var(--border-soft);
  color:var(--text-muted);
  background:transparent;
  transition:all .2s;
}
.icon-notice:hover{
  color:var(--brand);
  border-color:var(--brand);
}

/* hero */
.category-hero{
  position:relative;
  padding:4.2rem 0 4.4rem;
  background:
    linear-gradient(115deg,rgba(11,16,22,.92) 0%,rgba(11,16,22,.78) 50%,rgba(11,16,22,.86) 100%),
    url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
  border-bottom:1px solid var(--border-soft);
}
.hero-breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:.5rem;
  font-size:.84rem;
  color:var(--text-dim);
  margin-bottom:1.2rem;
}
.hero-breadcrumb a{color:var(--text-muted);display:inline-flex;gap:.4rem;align-items:center}
.hero-breadcrumb a:hover{color:var(--brand)}
.hero-breadcrumb .divider{color:var(--text-dim);opacity:.6}
.hero-title{
  font-size:clamp(2rem,4.6vw,3.6rem);
  font-weight:700;
  line-height:1.2;
  letter-spacing:-.035em;
  margin:0 0 1.1rem;
}
.hero-title .mark{
  color:var(--brand-2);
}
.hero-desc{
  font-size:1rem;
  color:var(--text-muted);
  max-width:680px;
  line-height:1.9;
  margin-bottom:1.4rem;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:.8rem;align-items:center}
.hero-stats{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:.7rem;
  margin-top:2.4rem;
  max-width:680px;
}
.hero-stat{
  border:1px solid var(--border-soft);
  background:rgba(18,25,33,.64);
  border-radius:12px;
  padding:.68rem .7rem .6rem;
}
.hero-stat strong{
  display:block;
  font-size:1.18rem;
  font-weight:700;
  color:#fff;
  line-height:1.25;
}
.hero-stat span{
  display:block;
  font-size:.72rem;
  color:var(--text-dim);
}
.hero-panel{
  margin-top:2rem;
  position:relative;
  z-index:2;
}
@media(min-width:992px){
  .hero-panel{margin-top:0;}
}
.hero-panel-card{
  background:linear-gradient(180deg,#1B2530,#10161D);
  border:1px solid var(--border-soft);
  border-radius:18px;
  padding:.95rem .95rem .75rem;
  box-shadow:var(--shadow-card);
  position:relative;
  overflow:hidden;
}
.hero-panel-card:before{
  content:"";
  position:absolute;
  inset:0;
  background:
    radial-gradient(circle at 100% 0%,rgba(249,115,22,.1),transparent 48%),
    radial-gradient(circle at 0% 100%,rgba(45,212,191,.08),transparent 44%);
  pointer-events:none;
}
.hero-panel-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  border-bottom:1px solid var(--border-soft);
  padding-bottom:.7rem;
  margin-bottom:.75rem;
  position:relative;
}
.hero-panel-head h3{
  font-size:.88rem;
  font-weight:600;
  color:var(--text-strong);
  margin:0;
  display:inline-flex;
  align-items:center;
  gap:.5rem;
}
.hero-panel-head h3 i{color:var(--brand)}
.hero-panel-head .live-tag{
  font-size:.72rem;
  color:var(--green);
  display:inline-flex;
  align-items:center;
  gap:.3rem;
  background:rgba(34,197,94,.1);
  border-radius:999px;
  padding:.22rem .6rem;
}
.hero-panel-head .live-tag i{font-size:.6rem}
.hero-snapshot-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1rem;
  padding:.58rem .75rem;
  border-radius:10px;
  background:rgba(255,255,255,.035);
  border:1px solid transparent;
  margin-bottom:.5rem;
  position:relative;
  transition:border .2s,background .2s;
}
.hero-snapshot-row:hover{border-color:var(--border-soft);background:rgba(255,255,255,.06)}
.hero-snapshot-label{
  display:flex;
  align-items:center;
  gap:.55rem;
  font-size:.88rem;
  color:var(--text-strong);
}
.hero-snapshot-label i{color:var(--text-dim)}
.hero-snapshot-num{
  font-size:.8rem;
  color:var(--text-muted);
  font-family:ui-monospace,"SFMono-Regular",Consolas,monospace;
}
.status-dot{
  width:7px;
  height:7px;
  border-radius:50%;
  display:inline-block;
  flex:0 0 auto;
}
.status-dot.green{background:var(--green);box-shadow:0 0 0 4px rgba(34,197,94,.12)}
.status-dot.amber{background:var(--amber);box-shadow:0 0 0 4px rgba(245,158,11,.12)}
.status-dot.red{background:var(--red);box-shadow:0 0 0 4px rgba(239,68,68,.12)}
.hero-cover{
  border-radius:16px;
  overflow:hidden;
  margin:.55rem .15rem 0;
  border:1px solid var(--border-soft);
  box-shadow:0 18px 30px rgba(0,0,0,.35);
  position:relative;
}
.hero-cover img{width:100%;height:190px;object-fit:cover}
.hero-cover-tip{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1rem;
  padding:.65rem .75rem;
  background:rgba(18,25,33,.92);
  border-top:1px solid var(--border-soft);
}
.hero-cover-tip span{
  display:inline-flex;
  align-items:center;
  gap:.4rem;
  font-size:.8rem;
  color:var(--text-muted);
}
.hero-cover-tip i{color:var(--mint)}

/* category page main body */
.catalog-main{
  background:linear-gradient(180deg,var(--bg),#0d1319);
  padding:3.4rem 0 4rem;
}
.catalog-grid{
  display:grid;
  gap:1.7rem;
}
@media(min-width:992px){
  .catalog-grid{
    grid-template-columns:270px 1fr;
    align-items:start;
  }
}
.catalog-sidebar{
  position:sticky;
  top:calc(var(--header-h) + 1.25rem);
  border:1px solid var(--border-soft);
  background:linear-gradient(180deg,#151E26,#11171E);
  border-radius:16px;
  padding:1.15rem;
  overflow:hidden;
}
.catalog-side-title{
  display:flex;
  align-items:center;
  gap:.55rem;
  font-size:1rem;
  font-weight:700;
  margin:0 0 .9rem;
  padding-bottom:.75rem;
  border-bottom:1px solid var(--border-soft);
}
.catalog-side-title i{color:var(--brand)}
.toc-block-title{
  font-size:.76rem;
  color:var(--text-dim);
  margin:1rem 0 .4rem;
  text-transform:none;
  display:flex;
  align-items:center;
  gap:.4rem;
}
.toc-block-title i{font-size:.8rem}
.catalog-toc{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  gap:.2rem;
}
.catalog-toc a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:.6rem;
  padding:.48rem .65rem;
  border-radius:9px;
  font-size:.87rem;
  color:var(--text-muted);
  border:1px solid transparent;
  transition:all .2s;
}
.catalog-toc a:hover{
  color:#fff;
  background:rgba(255,255,255,.05);
}
.catalog-toc a.active{
  background:var(--brand-soft);
  border-color:rgba(249,115,22,.22);
  color:var(--brand-2);
  font-weight:500;
}
.catalog-toc a.active .count{color:var(--brand)}
.catalog-toc a .count{
  font-size:.72rem;
  color:var(--text-dim);
  display:inline-flex;
  align-items:center;
  gap:.25rem;
  font-family:ui-monospace,Consolas,monospace;
}
.catalog-toc a .count i{
  font-size:.58rem;
  color:var(--green);
}
.catalog-toc .child{
  padding-left:1.2rem;
}
.legend-card{
  margin-top:1.2rem;
  border:1px solid rgba(148,163,184,.12);
  background:rgba(11,16,22,.5);
  border-radius:12px;
  padding:.8rem .9rem;
  display:grid;
  gap:.52rem;
}
.legend-line{
  display:flex;
  align-items:center;
  gap:.55rem;
  font-size:.8rem;
  color:var(--text-muted);
}
.legend-line .legend-text{
  margin-left:auto;
  color:var(--text-dim);
  font-size:.74rem;
}

/* resource right list */
.catalog-right{
  min-width:0;
}
.catalog-toolbar{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:1rem;
  flex-wrap:wrap;
  margin-bottom:1.1rem;
}
.catalog-toolbar-title{
  font-size:1rem;
  font-weight:700;
  display:flex;
  align-items:center;
  gap:.5rem;
  margin:0;
}
.catalog-toolbar-title i{color:var(--brand)}
.catalog-toolbar-desc{
  font-size:.83rem;
  color:var(--text-dim);
  margin-top:.15rem;
}
.toolbar-actions{
  display:flex;
  gap:.5rem;
  align-items:center;
  flex-wrap:wrap;
}
.resource-list{
  display:grid;
  gap:1rem;
}
.resource-card{
  border:1px solid var(--border-soft);
  background:linear-gradient(180deg,#151D26,#10161D);
  border-radius:16px;
  overflow:hidden;
  position:relative;
  transition:border .25s,box-shadow .25s;
}
.resource-card::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:1px;
  background:linear-gradient(90deg,rgba(249,115,22,.1),rgba(249,115,22,.55),rgba(249,115,22,.1));
  opacity:.7;
}
.resource-card:hover{
  border-color:rgba(249,115,22,.45);
  box-shadow:var(--shadow-card-hover);
}
.resource-card-row{
  display:grid;
  grid-template-columns:1fr;
  gap:.75rem;
  padding:1.15rem 1.25rem;
}
@media(min-width:768px){
  .resource-card-row{
    grid-template-columns:96px 1fr minmax(155px,220px);
    align-items:center;
  }
}
.resource-thumb{
  border-radius:12px;
  overflow:hidden;
  border:1px solid var(--border-soft);
  height:110px;
  background:#0d1219;
}
@media(min-width:768px){
  .resource-thumb{height:96px}
}
.resource-thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .4s ease;
}
.resource-card:hover .resource-thumb img{transform:scale(1.03)}
.resource-card-top{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.5rem;
}
.resource-card h3{
  font-size:1.05rem;
  font-weight:700;
  margin:0 .4rem .1rem 0;
  color:var(--text-strong);
}
.resource-summary{
  font-size:.86rem;
  color:var(--text-muted);
  line-height:1.75;
  margin:.3rem 0 .65rem;
}
.resource-tags{
  display:flex;
  gap:.4rem;
  flex-wrap:wrap;
}
.small-tag{
  display:inline-flex;
  align-items:center;
  gap:.3rem;
  background:rgba(255,255,255,.05);
  border:1px solid rgba(148,163,184,.14);
  color:var(--text-muted);
  border-radius:999px;
  font-size:.75rem;
  padding:.12rem .6rem;
}
.small-tag i{font-size:.7rem}
.resource-state{
  display:flex;
  flex-direction:column;
  gap:.65rem;
  justify-content:center;
  align-items:stretch;
  padding-top:.7rem;
  border-top:1px dashed rgba(148,163,184,.14);
  text-align:right;
}
@media(min-width:768px){
  .resource-state{
    border-top:0;
    border-left:1px dashed rgba(148,163,184,.14);
    padding:.2rem 0 .2rem 1rem;
    text-align:left;
  }
}
.state-row{
  display:flex;
  align-items:center;
  gap:.6rem;
  justify-content:flex-end;
}
@media(min-width:768px){.state-row{justify-content:flex-start}}
.state-status{
  font-size:.85rem;
  font-weight:600;
  color:var(--green);
  display:inline-flex;
  align-items:center;
  gap:.45rem;
}
.state-meta{
  font-size:.78rem;
  color:var(--text-dim);
  font-family:ui-monospace,Consolas,monospace;
}
.resource-stat-line{
  display:flex;
  align-items:center;
  justify-content:flex-end;
  flex-wrap:wrap;
  gap:.5rem;
  font-size:.78rem;
  color:var(--text-dim);
}
@media(min-width:768px){.resource-stat-line{justify-content:flex-start;gap:.8rem}}
.resource-stat-line .num{color:var(--text-strong)}
.resource-stat-line i{color:var(--text-dim)}

/* pagination */
.pagination-custom{
  display:flex;
  align-items:center;
  justify-content:flex-end;
  gap:.4rem;
  margin-top:1.6rem;
  flex-wrap:wrap;
}
.page-item{
  display:inline-flex;
  min-width:36px;
  height:36px;
  align-items:center;
  justify-content:center;
  border:1px solid var(--border-soft);
  background:rgba(255,255,255,.04);
  color:var(--text-muted);
  border-radius:10px;
  font-size:.85rem;
  padding:0 .6rem;
  transition:all .2s;
  cursor:pointer;
}
.page-item:hover{color:var(--brand);border-color:var(--brand)}
.page-item.active{
  background:linear-gradient(135deg,#F97316,#FB923C);
  border-color:#F97316;
  color:#0B1016;
  font-weight:600;
}
.page-item.disabled{opacity:.4;pointer-events:none}
.page-info{
  font-size:.8rem;
  color:var(--text-dim);
  margin-left:auto;
  font-family:ui-monospace,Consolas,monospace;
}

/* workflow */
.workflow-band{
  border:1px solid var(--border-soft);
  border-radius:16px;
  padding:1.4rem 1.3rem;
  margin-top:2.2rem;
  position:relative;
  overflow:hidden;
  background:
    radial-gradient(circle at 85% -20%,rgba(45,212,191,.1),transparent 45%),
    linear-gradient(180deg,#151D26,#10161D);
}
.workflow-title{
  font-size:1.05rem;
  font-weight:700;
  display:flex;
  align-items:center;
  gap:.5rem;
  margin-bottom:1rem;
}
.workflow-title i{color:var(--mint)}
.workflow-grid{
  display:grid;
  gap:1rem;
}
@media(min-width:768px){
  .workflow-grid{grid-template-columns:repeat(3,1fr)}
}
.workflow-step{
  border:1px solid rgba(148,163,184,.12);
  background:rgba(11,16,22,.5);
  border-radius:12px;
  padding:1rem;
}
.workflow-step .step-no{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:24px;
  height:24px;
  border-radius:8px;
  background:var(--brand-soft);
  border:1px solid rgba(249,115,22,.2);
  color:var(--brand-2);
  font-size:.78rem;
  font-weight:700;
  margin-bottom:.8rem;
}
.workflow-step h4{font-size:.95rem;font-weight:600;margin:0 0 .35rem}
.workflow-step p{font-size:.82rem;color:var(--text-muted);line-height:1.7;margin:0}

/* faq */
.faq-section{
  background:var(--bg);
  border-top:1px solid var(--border-soft);
  padding-top:var(--section-pad);
  padding-bottom:var(--section-pad);
}
.faq-header-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1.5rem;
  margin-bottom:2rem;
  flex-wrap:wrap;
}
.faq-heading{min-width:300px}
.faq-note{font-size:.88rem;color:var(--text-dim);max-width:420px;text-align:right}
.accordion.faq-accordion{
  display:grid;
  gap:.9rem;
}
.faq-card{
  border:1px solid var(--border-soft);
  background:linear-gradient(180deg,#151D26,#10161D);
  border-radius:14px;
  overflow:hidden;
}
.faq-card .accordion-button{
  background:transparent;
  color:var(--text-strong);
  font-weight:600;
  font-size:.98rem;
  padding:1rem 1.2rem;
  box-shadow:none;
  border:0;
  display:flex;
  align-items:center;
  gap:.75rem;
}
.faq-card .accordion-button::after{
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%2394A3B8'%3E%3Cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3E%3C/svg%3E");
  width:16px;
  height:16px;
  background-size:cover;
  transition:transform .3s;
}
.faq-card .accordion-button:not(.collapsed){
  color:var(--brand-2);
  background:rgba(249,115,22,.06);
}
.faq-card .accordion-button:not(.collapsed)::after{
  transform:rotate(-180deg);
  filter:brightness(0) saturate(100%) invert(62%) sepia(68%) saturate(4000%) hue-rotate(350deg);
}
.faq-card .accordion-button:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:-2px;
}
.faq-card .accordion-body{
  padding:0 1.2rem 1.2rem;
  color:var(--text-muted);
  font-size:.9rem;
  line-height:1.85;
  border-top:1px solid var(--border-soft);
  background:rgba(11,16,22,.35);
}
.faq-card .accordion-body p:last-child{margin-bottom:0}
.faq-card .question-mark{
  width:24px;
  height:24px;
  border-radius:8px;
  background:var(--success-soft);
  color:var(--green);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:.85rem;
  flex:0 0 auto;
}

/* feedback band */
.feedback-cta{
  background:
    radial-gradient(circle at 0% 0%,rgba(249,115,22,.14),transparent 45%),
    linear-gradient(180deg,#151D26,#10161D);
  border-top:1px solid var(--border-soft);
  border-bottom:1px solid var(--border-soft);
  padding:3rem 0;
}
.feedback-box{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1.8rem;
  flex-wrap:wrap;
}
.feedback-copy h2{
  font-size:clamp(1.2rem,2.4vw,1.75rem);
  font-weight:700;
  margin:0 0 .5rem;
}
.feedback-copy p{
  color:var(--text-muted);
  margin:0;
  font-size:.92rem;
  max-width:640px;
}
.feedback-actions{display:flex;gap:.8rem;flex-wrap:wrap}

/* modal */
.modal-content{
  background:var(--panel);
  border:1px solid var(--border-soft);
  border-radius:18px;
  color:var(--text-strong);
  box-shadow:var(--shadow-card);
}
.modal-header{
  border-bottom:1px solid var(--border-soft);
  padding:1rem 1.2rem;
}
.modal-title{display:inline-flex;align-items:center;gap:.5rem;font-size:1.1rem;font-weight:700}
.modal-title i{color:var(--brand)}
.btn-close{
  filter:invert(1) opacity(.7);
}
.modal-body{padding:1.2rem}
.form-control,.form-select{
  background:#0D1219;
  border:1px solid var(--border-soft);
  color:var(--text-strong);
  border-radius:10px;
  padding:.6rem .8rem;
  font-size:.92rem;
}
.form-control:focus,.form-select:focus{
  background:#0D1219;
  color:#fff;
  border-color:var(--brand);
  box-shadow:0 0 0 .2rem rgba(249,115,22,.18);
}
.form-label{color:var(--text-muted);font-size:.86rem}
.form-check-input{background:#0D1219;border-color:var(--border-strong)}
.form-check-input:checked{background-color:var(--brand);border-color:var(--brand)}

/* footer */
.site-footer{
  background:#0B1016;
  border-top:1px solid var(--border-soft);
  padding:3rem 0 1.4rem;
  margin-top:auto;
}
.site-footer a{color:var(--text-muted);transition:color .2s}
.site-footer a:hover{color:var(--brand)}
.footer-link-line{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:.4rem .8rem;
  padding-bottom:1.2rem;
  border-bottom:1px solid var(--border-soft);
  margin-bottom:1.4rem;
  font-size:.88rem;
}
.footer-status-note{
  display:inline-flex;
  align-items:center;
  gap:.4rem;
  font-size:.8rem;
  color:var(--text-dim);
  background:rgba(255,255,255,.04);
  border:1px solid var(--border-soft);
  padding:.3rem .8rem;
  border-radius:999px;
}
.footer-brand-row{
  margin-bottom:1.1rem;
}
.footer-description{
  color:var(--text-muted);
  font-size:.86rem;
  max-width:760px;
  line-height:1.9;
  margin-bottom:1.7rem;
}
.footer-copyright{
  border-top:1px solid rgba(148,163,184,.1);
  padding-top:1.2rem;
  display:flex;
  justify-content:space-between;
  gap:1rem;
  flex-wrap:wrap;
  color:var(--text-dim);
  font-size:.79rem;
}
.copyright-col{display:inline-flex;gap:.5rem;align-items:center;flex-wrap:wrap}

/* reveal animation */
.reveal{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .7s ease,transform .7s ease;
}
.reveal.is-inview{
  opacity:1;
  transform:translateY(0);
}
@keyframes heroFadeUp{
  from{opacity:0;transform:translateY(16px)}
  to{opacity:1;transform:translateY(0)}
}
.fade-up-item{
  animation:heroFadeUp .65s ease both;
}
.delay-1{animation-delay:.1s}
.delay-2{animation-delay:.2s}
.delay-3{animation-delay:.3s}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}

@media(max-width:1100px){
  .navbar-primary a{
    padding:.45rem .5rem;
    font-size:.86rem;
  }
}
@media(max-width:768px){
  .section{padding-block:3rem}
  .container-custom{padding-left:1rem;padding-right:1rem}
  .catalog-sidebar{position:static}
  .hero-title{letter-spacing:-.02em}
  .hero-stats{gap:.5rem}
  .catalog-toolbar{flex-direction:column;align-items:flex-start}
  .pagination-custom{justify-content:flex-start}
  .faq-header-row .faq-note{text-align:left;max-width:100%}
  .page-item{min-width:32px;height:32px;font-size:.8rem}
}
@media(max-width:575px){
  .section-title{font-size:1.5rem}
  .resource-card-row{padding:1rem}
  .hero-panel-card{padding:.75rem}
  .resource-state{
    text-align:left;
    border-top:1px dashed rgba(148,163,184,.14);
    border-left:0;
    padding-top:.7rem;
  }
  .resource-state .state-row,
  .resource-stat-line{justify-content:flex-start}
  .hero-stats{
    grid-template-columns:repeat(2,1fr);
  }
}

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