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

        :root {
            --blue: #0057FF;
            --blue-dim: rgba(0, 87, 255, .07);
            --blue-mid: rgba(0, 87, 255, .16);
            --ink: #090E1E;
            --ink-2: #3A4260;
            --ink-3: #8891AE;
            --white: #FFFFFF;
            --surface: #F6F8FD;
            --border: #E3E8F2;
            --green: #00C48C;
            --red: #EF4444;
            --amber: #F59E0B;
            --indigo: #6366F1;
            --teal: #14B8A6;
            --font-d: 'Syne', sans-serif;
            --font-b: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
                "Microsoft YaHei", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-b);
            color: var(--ink);
            background: var(--white);
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        /* ── NAV ── */
        nav {
            position: fixed;
            inset: 0 0 auto 0;
            z-index: 200;
            height: 68px;
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, .94);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border);
        }

        .nav-inner {
            max-width: 1160px;
            margin: 0 auto;
            padding: 0 32px;
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .logo {
            font-family: var(--font-d);
            font-size: 20px;
            font-weight: 800;
            color: var(--ink);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 9px;
        }

        .logo-mark {
            width: 28px;
            height: 28px;
            background: var(--blue);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .logo-icon {
            width: 20px;
            height: 20px;
        }

        .nav-links {
            display: flex;
            gap: 28px;
            list-style: none;
        }

        .nav-links a {
            font-size: 14px;
            font-weight: 600;
            color: var(--ink-2);
            text-decoration: none;
            transition: color .18s;
        }

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

        .btn-nav {
            background: var(--ink);
            color: #fff;
            border: none;
            cursor: pointer;
            padding: 9px 22px;
            border-radius: 100px;
            font-family: var(--font-b);
            font-size: 14px;
            font-weight: 600;
            transition: background .18s;
        }

        .btn-nav:hover {
            background: var(--blue);
        }

        /* ── HERO ── */
        .hero {
            padding: 148px 32px 100px;
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            background: var(--white);
        }

        .hero-chip {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--blue-dim);
            color: var(--blue);
            border: 1px solid var(--blue-mid);
            padding: 6px 16px;
            border-radius: 100px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 32px;
            animation: up .5s ease both;
        }

        .chip-dot {
            width: 7px;
            height: 7px;
            background: var(--blue);
            border-radius: 50%;
            animation: blink 2s infinite;
        }

        @keyframes blink {

            0%,
            100% {
                opacity: 1
            }

            50% {
                opacity: .3
            }
        }

        .hero h1 {
            font-family: var(--font-d);
            font-size: clamp(40px, 6.5vw, 80px);
            font-weight: 800;
            line-height: 1.08;
            color: var(--ink);
            max-width: 860px;
            animation: up .5s .08s ease both;
        }

        .hero h1 .ac {
            color: var(--blue);
        }

        .hero-sub {
            margin-top: 24px;
            font-size: 18px;
            line-height: 1.75;
            color: var(--ink-2);
            max-width: 600px;
            animation: up .5s .16s ease both;
        }

        .hero-cta {
            margin-top: 44px;
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            justify-content: center;
            animation: up .5s .24s ease both;
        }

        .btn-primary {
            background: var(--blue);
            color: #fff;
            padding: 15px 32px;
            border-radius: 14px;
            font-size: 16px;
            font-weight: 600;
            font-family: var(--font-b);
            border: none;
            cursor: pointer;
            box-shadow: 0 8px 28px rgba(0, 87, 255, .24);
            transition: transform .15s, box-shadow .2s;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 36px rgba(0, 87, 255, .32);
        }

        .btn-ghost {
            background: transparent;
            color: var(--ink);
            padding: 15px 32px;
            border-radius: 14px;
            font-size: 16px;
            font-weight: 600;
            font-family: var(--font-b);
            border: 1.5px solid var(--border);
            cursor: pointer;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: border-color .18s, color .18s;
        }

        .btn-ghost:hover {
            border-color: var(--blue);
            color: var(--blue);
        }

        /* pipeline */
        .pipeline {
            margin-top: 72px;
            display: flex;
            align-items: center;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: 28px 40px;
            max-width: 800px;
            width: 100%;
            animation: up .5s .32s ease both;
        }

        .pipe-step {
            flex: 1;
            text-align: center;
            position: relative;
        }

        .pipe-step+.pipe-step::before {
            content: '→';
            position: absolute;
            left: -14px;
            top: 50%;
            transform: translateY(-60%);
            font-size: 18px;
            color: var(--ink-3);
        }

        .pipe-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            margin: 0 auto 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 19px;
        }

        .pi-1 {
            background: rgba(239, 68, 68, .1);
            color: var(--red);
        }

        .pi-2 {
            background: rgba(245, 158, 11, .1);
            color: var(--amber);
        }

        .pi-3 {
            background: rgba(0, 196, 140, .1);
            color: var(--green);
        }

        .pi-4 {
            background: var(--blue-dim);
            color: var(--blue);
        }

        .pipe-label {
            font-size: 13px;
            font-weight: 700;
            color: var(--ink);
        }

        .pipe-sub {
            font-size: 12px;
            color: var(--ink-3);
            margin-top: 3px;
        }

        /* ── SECTION BASE ── */
        .section {
            padding: 96px 32px;
        }

        .section-inner {
            max-width: 1160px;
            margin: 0 auto;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: .1em;
            text-transform: uppercase;
            color: var(--blue);
            margin-bottom: 18px;
        }

        .section-tag::before {
            content: '';
            width: 18px;
            height: 2px;
            background: var(--blue);
            display: block;
        }

        .section-h {
            font-family: var(--font-d);
            font-size: clamp(28px, 4vw, 50px);
            font-weight: 800;
            line-height: 1.12;
            color: var(--ink);
        }

        .section-p {
            margin-top: 16px;
            font-size: 17px;
            line-height: 1.75;
            color: var(--ink-2);
            max-width: 520px;
        }

        /* ── PAIN ── */
        .pain-bg {
            background: var(--ink);
        }

        .pain-bg .section-tag {
            color: rgba(255, 255, 255, .4);
        }

        .pain-bg .section-tag::before {
            background: rgba(255, 255, 255, .3);
        }

        .pain-bg .section-h {
            color: #fff;
        }

        .pain-bg .section-p {
            color: rgba(255, 255, 255, .45);
            max-width: 640px;
        }

        .pain-grid {
            margin-top: 52px;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1px;
            border-radius: 20px 20px 0 0;
            overflow: hidden;
            background: rgba(255, 255, 255, .06);
        }

        .pain-card {
            padding: 44px 36px;
            transition: background .2s;
        }

        .pain-card:nth-child(1) {
            background: rgba(239, 68, 68, .06);
        }

        .pain-card:nth-child(2) {
            background: rgba(245, 158, 11, .05);
        }

        .pain-card:nth-child(3) {
            background: rgba(99, 102, 241, .05);
        }

        .pain-card:nth-child(4) {
            background: rgba(20, 184, 166, .05);
        }

        .pain-card:nth-child(1):hover {
            background: rgba(239, 68, 68, .10);
        }

        .pain-card:nth-child(2):hover {
            background: rgba(245, 158, 11, .09);
        }

        .pain-card:nth-child(3):hover {
            background: rgba(99, 102, 241, .09);
        }

        .pain-card:nth-child(4):hover {
            background: rgba(20, 184, 166, .09);
        }

        .pain-num {
            font-family: var(--font-d);
            font-size: 12px;
            font-weight: 800;
            color: rgba(255, 255, 255, .16);
            letter-spacing: .14em;
            margin-bottom: 22px;
        }

        .pain-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 20px;
        }

        .picon-1 {
            background: rgba(239, 68, 68, .18);
            color: #FCA5A5;
        }

        .picon-2 {
            background: rgba(245, 158, 11, .16);
            color: #FCD34D;
        }

        .picon-3 {
            background: rgba(99, 102, 241, .18);
            color: #A5B4FC;
        }

        .picon-4 {
            background: rgba(20, 184, 166, .16);
            color: #5EEAD4;
        }

        .pain-title {
            font-family: var(--font-d);
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .pain-desc {
            font-size: 15px;
            line-height: 1.75;
            color: rgba(255, 255, 255, .48);
        }

        .pain-quote {
            margin-top: 20px;
            font-size: 13px;
            font-style: italic;
            color: rgba(255, 255, 255, .26);
            border-left: 2px solid rgba(255, 255, 255, .1);
            padding-left: 14px;
            line-height: 1.65;
        }

        /* 平台风险强调条 */
        .risk-card {
            margin-top: 1px;
            background: rgba(239, 68, 68, .08);
            border: 1px solid rgba(239, 68, 68, .16);
            border-radius: 0 0 20px 20px;
            padding: 32px 36px;
            display: grid;
            grid-template-columns: auto 1fr auto;
            gap: 28px;
            align-items: center;
        }

        .risk-icon-wrap {
            width: 52px;
            height: 52px;
            background: rgba(239, 68, 68, .14);
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FCA5A5;
            font-size: 20px;
            flex-shrink: 0;
        }

        .risk-body h4 {
            font-family: var(--font-d);
            font-size: 17px;
            font-weight: 700;
            color: #FCA5A5;
            margin-bottom: 8px;
        }

        .risk-body p {
            font-size: 15px;
            line-height: 1.75;
            color: rgba(255, 255, 255, .42);
        }

        .risk-body strong {
            color: rgba(255, 255, 255, .68);
            font-weight: 600;
        }

        .risk-stat {
            text-align: center;
            background: rgba(239, 68, 68, .1);
            border: 1px solid rgba(239, 68, 68, .18);
            border-radius: 14px;
            padding: 20px 28px;
            flex-shrink: 0;
        }

        .risk-stat-num {
            font-family: var(--font-d);
            font-size: 36px;
            font-weight: 800;
            color: #FCA5A5;
            line-height: 1;
        }

        .risk-stat-label {
            font-size: 12px;
            color: rgba(255, 255, 255, .3);
            margin-top: 6px;
        }

        /* ── SOLUTION ROWS ── */
        .sol-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 80px;
            align-items: center;
            margin-bottom: 96px;
        }

        .sol-row:last-child {
            margin-bottom: 0;
        }

        .sol-row.flip {
            direction: rtl;
        }

        .sol-row.flip>* {
            direction: ltr;
        }

        .sol-chip {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            background: var(--blue-dim);
            color: var(--blue);
            border: 1px solid var(--blue-mid);
            padding: 5px 14px;
            border-radius: 100px;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: .06em;
            text-transform: uppercase;
            margin-bottom: 18px;
        }

        .sol-h {
            font-family: var(--font-d);
            font-size: clamp(22px, 3vw, 35px);
            font-weight: 800;
            line-height: 1.2;
            color: var(--ink);
            margin-bottom: 14px;
        }

        .sol-p {
            font-size: 16px;
            line-height: 1.8;
            color: var(--ink-2);
        }

        .sol-checks {
            margin-top: 24px;
            display: flex;
            flex-direction: column;
            gap: 11px;
        }

        .chk {
            display: flex;
            gap: 11px;
            font-size: 15px;
            color: var(--ink-2);
            align-items: flex-start;
        }

        .chk i {
            color: var(--green);
            margin-top: 3px;
            flex-shrink: 0;
            font-size: 13px;
        }

        .sol-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-top: 24px;
            background: var(--ink);
            color: #fff;
            padding: 9px 18px;
            border-radius: 100px;
            font-size: 13px;
            font-weight: 600;
        }

        .sol-badge i {
            color: var(--green);
        }

        /* BA slider */
        .ba {
            position: relative;
            border-radius: 20px;
            overflow: hidden;
            aspect-ratio: 1/1;
            background: var(--border);
            box-shadow: 0 20px 56px rgba(9, 14, 30, .12);
        }

        .ba-base {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .ba-ov {
            position: absolute;
            inset: 0 auto 0 0;
            overflow: hidden;
            border-right: 3px solid #fff;
            z-index: 2;
            width: 50%;
        }

        .ba-ov img {
            position: absolute;
            inset: 0;
            height: 100%;
            width: auto;
            max-width: none;
        }

        .ba-range {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            opacity: 0;
            cursor: ew-resize;
            z-index: 10;
            -webkit-appearance: none;
            appearance: none;
        }

        .ba-knob {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 46px;
            height: 46px;
            background: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 18px rgba(0, 0, 0, .18);
            z-index: 5;
            pointer-events: none;
            color: var(--blue);
            font-size: 15px;
        }

        .ba-tag {
            position: absolute;
            top: 14px;
            z-index: 4;
            padding: 4px 12px;
            border-radius: 8px;
            font-size: 12px;
            font-weight: 700;
        }

        .ba-tag.b {
            right: 12px;
            background: rgba(9, 14, 30, .6);
            color: #fff;
        }

        .ba-tag.a {
            left: 12px;
            background: var(--blue);
            color: #fff;
        }

        /* placeholder for missing images */
        .img-ph {
            width: 100%;
            height: 100%;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 10px;
            background: var(--surface);
            color: var(--ink-3);
            font-size: 13px;
            font-weight: 600;
        }

        .img-ph i {
            font-size: 32px;
            opacity: .3;
        }

        /* ── ASSET ── */
        .asset-bg {
            background: var(--surface);
        }

        .asset-cards {
            margin-top: 52px;
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .asset-card {
            background: var(--white);
            border: 1.5px solid var(--border);
            border-radius: 20px;
            padding: 36px 28px;
            transition: transform .2s, box-shadow .2s;
        }

        .asset-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 16px 40px rgba(9, 14, 30, .08);
        }

        .asset-card.hl {
            background: var(--blue);
            border-color: var(--blue);
        }

        .ac-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 20px;
        }

        .aci-blue {
            background: var(--blue-dim);
            color: var(--blue);
        }

        .aci-green {
            background: rgba(0, 196, 140, .1);
            color: var(--green);
        }

        .aci-amber {
            background: rgba(245, 158, 11, .1);
            color: var(--amber);
        }

        .asset-card.hl .ac-icon {
            background: rgba(255, 255, 255, .18);
            color: #fff;
        }

        .ac-h {
            font-family: var(--font-d);
            font-size: 18px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 10px;
        }

        .asset-card.hl .ac-h {
            color: #fff;
        }

        .ac-p {
            font-size: 14px;
            line-height: 1.75;
            color: var(--ink-2);
        }

        .asset-card.hl .ac-p {
            color: rgba(255, 255, 255, .7);
        }

        .ac-tag {
            margin-top: 18px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--blue);
        }

        .asset-card.hl .ac-tag {
            color: rgba(255, 255, 255, .72);
        }

        /* ── CREATIVE ── */
        .creative-grid {
            margin-top: 56px;
            display: grid;
            grid-template-columns: 1fr 1.5fr;
            gap: 56px;
            align-items: start;
        }

        .cs-list {
            display: flex;
            flex-direction: column;
        }

        .cs {
            display: grid;
            grid-template-columns: 52px 1fr;
            gap: 20px;
            padding: 28px 0;
            border-bottom: 1px solid var(--border);
        }

        .cs:last-child {
            border-bottom: none;
        }

        .cs-num {
            font-family: var(--font-d);
            font-size: 42px;
            font-weight: 800;
            color: var(--blue-dim);
            line-height: 1;
        }

        .cs h4 {
            font-family: var(--font-d);
            font-size: 17px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 6px;
        }

        .cs p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--ink-2);
        }

        .cs-tag {
            margin-top: 10px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            font-weight: 700;
            color: var(--blue);
        }

        .showcase {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
        }

        .sc-main {
            grid-column: 1/-1;
            border-radius: 16px;
            overflow: hidden;
            aspect-ratio: 16/9;
            background: var(--surface);
            border: 1px solid var(--border);
        }

        .sc-card {
            border-radius: 14px;
            overflow: hidden;
            aspect-ratio: 1/1;
            background: var(--surface);
            border: 1px solid var(--border);
            position: relative;
        }

        .sc-label {
            position: absolute;
            bottom: 10px;
            left: 10px;
            background: rgba(9, 14, 30, .65);
            color: #fff;
            padding: 4px 10px;
            border-radius: 6px;
            font-size: 11px;
            font-weight: 700;
        }

        .sc-placeholder {
            width: 100%;
            height: 100%;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 8px;
            color: var(--ink-3);
            font-size: 12px;
            font-weight: 600;
        }

        .sc-placeholder i {
            font-size: 24px;
            opacity: .3;
        }

        .sc-placeholder1 img {
            max-width: 100%;
            max-height: 100%;
            object-fit: contain;
        }

        /* callout */
        .callout {
            margin-top: 36px;
            padding: 28px 32px;
            background: var(--blue-dim);
            border: 1px solid var(--blue-mid);
            border-radius: 16px;
            display: flex;
            align-items: flex-start;
            gap: 20px;
        }

        .callout-icon {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            background: var(--blue);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
        }

        .callout h4 {
            font-family: var(--font-d);
            font-size: 16px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 6px;
        }

        .callout p {
            font-size: 15px;
            line-height: 1.75;
            color: var(--ink-2);
        }

        /* ── HOW ── */
        .how-grid {
            margin-top: 56px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 80px;
            align-items: start;
        }

        .steps {
            display: flex;
            flex-direction: column;
        }

        .step {
            display: grid;
            grid-template-columns: 52px 1fr;
            gap: 20px;
            padding: 30px 0;
            border-bottom: 1px solid var(--border);
        }

        .step:last-child {
            border-bottom: none;
        }

        .step-n {
            font-family: var(--font-d);
            font-size: 44px;
            font-weight: 800;
            color: var(--blue-dim);
            line-height: 1;
        }

        .step h4 {
            font-family: var(--font-d);
            font-size: 17px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 7px;
        }

        .step p {
            font-size: 15px;
            line-height: 1.7;
            color: var(--ink-2);
        }

        .step-tag {
            margin-top: 10px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            font-weight: 700;
            color: var(--blue);
        }

        /* api-box 保留（兼容旧代码，若已替换为 flow-widget 可删除） */
        .api-box {
            background: var(--ink);
            border-radius: 20px;
            padding: 32px;
            box-shadow: 0 24px 64px rgba(9, 14, 30, .16);
        }

        .api-dots {
            display: flex;
            gap: 7px;
            margin-bottom: 20px;
        }

        .api-dots span {
            width: 12px;
            height: 12px;
            border-radius: 50%;
        }

        .dot-r {
            background: #FF5F57;
        }

        .dot-y {
            background: #FEBC2E;
        }

        .dot-g {
            background: #28C840;
        }

        .api-code {
            font-family: monospace;
            font-size: 13px;
            line-height: 1.85;
            white-space: pre-wrap;
            color: #8892B0;
        }

        .kw {
            color: #6FC3DF;
        }

        .str {
            color: #A8FF78;
        }

        .num {
            color: #FFD700;
        }

        .cmt {
            color: #4A5568;
        }

        /* ── FLOW WIDGET ── */
        .flow-widget {
            background: #0f1117;
            border: 1px solid rgba(255, 255, 255, .08);
            border-radius: 16px;
            padding: 32px 28px 24px;
            display: flex;
            align-items: center;
        }

        .fw-inner {
            width: 100%;
        }

        .fw-steps {
            display: flex;
            align-items: center;
            gap: 0;
            width: 100%;
        }

        /* 单个步骤卡片 */
        .fw-step {
            flex: 1;
            min-width: 0;
            border-radius: 12px;
            padding: 18px 16px 14px;
            border: 1px solid transparent;
            transition: transform .2s ease;
        }

        .fw-step:hover {
            transform: translateY(-2px);
        }

        .fw-step--teal {
            background: rgba(29, 158, 117, .10);
            border-color: rgba(29, 158, 117, .25);
        }

        .fw-step--purple {
            background: rgba(83, 74, 183, .10);
            border-color: rgba(83, 74, 183, .25);
        }

        .fw-step--amber {
            background: rgba(186, 117, 23, .10);
            border-color: rgba(186, 117, 23, .25);
        }

        /* 步骤头部 */
        .fw-step-head {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 12px;
        }

        .fw-num {
            font-size: 11px;
            font-weight: 600;
            letter-spacing: .06em;
            opacity: .5;
            color: #fff;
            line-height: 1;
        }

        .fw-icon {
            width: 28px;
            height: 28px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .fw-step--teal .fw-icon {
            background: rgba(29, 158, 117, .2);
            color: #1d9e75;
        }

        .fw-step--purple .fw-icon {
            background: rgba(83, 74, 183, .2);
            color: #8f87e8;
        }

        .fw-step--amber .fw-icon {
            background: rgba(186, 117, 23, .2);
            color: #ef9f27;
        }

        .fw-icon svg {
            width: 16px;
            height: 16px;
        }

        .fw-icon--spin svg {
            animation: fw-spin 3s linear infinite;
            transform-origin: center;
        }

        @keyframes fw-spin {
            0% {
                transform: rotate(0deg);
            }

            100% {
                transform: rotate(360deg);
            }
        }

        .fw-title {
            font-size: 13px;
            font-weight: 600;
            color: #fff;
            white-space: nowrap;
        }

        /* 功能标签 */
        .fw-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 5px;
        }

        .fw-tag {
            font-size: 11px;
            font-weight: 400;
            border-radius: 5px;
            padding: 3px 7px;
            white-space: nowrap;
            line-height: 1.4;
        }

        .fw-step--teal .fw-tag {
            background: rgba(29, 158, 117, .15);
            color: #5dcaa5;
        }

        .fw-step--purple .fw-tag {
            background: rgba(83, 74, 183, .15);
            color: #afa9ec;
        }

        .fw-step--amber .fw-tag {
            background: rgba(186, 117, 23, .15);
            color: #fac775;
        }

        /* 箭头连接 */
        .fw-arrow {
            flex-shrink: 0;
            padding: 0 6px;
            opacity: .4;
            color: #fff;
            margin-bottom: 14px;
        }

        .fw-arrow-svg {
            width: 36px;
            height: 14px;
            display: block;
        }

        /* 虚线流动动画 */
        .fw-pipe {
            stroke-dasharray: 6 4;
            animation: fw-flow 1.2s linear infinite;
        }

        .fw-pipe--2 {
            animation-delay: .4s;
        }

        @keyframes fw-flow {
            0% {
                stroke-dashoffset: 20;
            }

            100% {
                stroke-dashoffset: 0;
            }
        }

        /* 底部说明 */
        .fw-footer {
            display: flex;
            align-items: flex-start;
            gap: 6px;
            margin-top: 20px;
            font-size: 12px;
            color: rgba(255, 255, 255, .35);
            padding-top: 16px;
            border-top: 1px solid rgba(255, 255, 255, .06);
        }

        /* ── PRICING ── */
        .pricing-grid {
            margin-top: 52px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .pc {
            border: 1.5px solid var(--border);
            border-radius: 22px;
            padding: 32px 24px;
            background: var(--white);
            transition: transform .2s, box-shadow .2s;
            position: relative;
        }

        .pc:hover {
            transform: translateY(-4px);
            box-shadow: 0 18px 44px rgba(9, 14, 30, .09);
        }

        .pc.feat {
            background: var(--ink);
            border-color: var(--ink);
            transform: scale(1.03);
        }

        .pc.feat:hover {
            transform: scale(1.03) translateY(-4px);
        }

        .pop-tag {
            position: absolute;
            top: -13px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--blue);
            color: #fff;
            padding: 3px 14px;
            border-radius: 100px;
            font-size: 11px;
            font-weight: 800;
            white-space: nowrap;
        }

        .pc-plan {
            font-size: 12px;
            font-weight: 700;
            letter-spacing: .09em;
            text-transform: uppercase;
            color: var(--ink-3);
            margin-bottom: 10px;
        }

        .feat .pc-plan {
            color: rgba(255, 255, 255, .4);
        }

        .pc-price {
            font-family: var(--font-d);
            font-size: 44px;
            font-weight: 800;
            color: var(--ink);
            line-height: 1;
        }

        .feat .pc-price {
            color: #fff;
        }

        .pc-price sup {
            font-size: 20px;
        }

        .pc-mo {
            font-size: 14px;
            color: var(--ink-3);
        }

        .feat .pc-mo {
            color: rgba(255, 255, 255, .4);
        }

        .pc-div {
            height: 1px;
            background: var(--border);
            margin: 24px 0;
        }

        .feat .pc-div {
            background: rgba(255, 255, 255, .12);
        }

        .pc-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .pc-list li {
            display: flex;
            gap: 9px;
            font-size: 13px;
            color: var(--ink-2);
            align-items: flex-start;
        }

        .feat .pc-list li {
            color: rgba(255, 255, 255, .65);
        }

        .pc-list i {
            color: var(--green);
            margin-top: 2px;
            flex-shrink: 0;
            font-size: 12px;
        }

        .pc-btn {
            width: 100%;
            margin-top: 28px;
            padding: 13px;
            border-radius: 12px;
            font-size: 14px;
            font-weight: 600;
            font-family: var(--font-b);
            cursor: pointer;
            border: 1.5px solid var(--border);
            background: transparent;
            color: var(--ink);
            transition: all .18s;
        }

        .pc-btn:hover {
            background: var(--blue-dim);
            border-color: var(--blue);
            color: var(--blue);
        }

        .feat .pc-btn {
            background: var(--blue);
            border-color: var(--blue);
            color: #fff;
        }

        .feat .pc-btn:hover {
            background: #0048D8;
        }

        /* ── CTA ── */
        .cta-box {
            background: var(--ink);
            border-radius: 28px;
            padding: 80px 60px;
            text-align: center;
        }

        .cta-box h2 {
            font-family: var(--font-d);
            font-size: clamp(28px, 4vw, 48px);
            font-weight: 800;
            color: #fff;
        }

        .cta-box p {
            font-size: 17px;
            color: rgba(255, 255, 255, .5);
            margin-top: 14px;
        }

        .cta-btns {
            margin-top: 40px;
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn-cta-ghost {
            background: transparent;
            color: rgba(255, 255, 255, .75);
            border: 1.5px solid rgba(255, 255, 255, .2);
            padding: 14px 28px;
            border-radius: 12px;
            font-size: 15px;
            font-weight: 600;
            font-family: var(--font-b);
            cursor: pointer;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all .18s;
        }

        .btn-cta-ghost:hover {
            border-color: rgba(255, 255, 255, .5);
            color: #fff;
        }

        /* ── FOOTER ── */
        footer {
            background: var(--ink);
            color: rgba(255, 255, 255, .45);
            padding: 64px 32px 36px;
        }

        .footer-inner {
            max-width: 1160px;
            margin: 0 auto;
        }

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

        .footer-logo {
            font-family: var(--font-d);
            font-size: 18px;
            font-weight: 800;
            color: #fff;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 14px;
        }

        .fl-mark {
            width: 22px;
            height: 22px;
            background: var(--blue);
            border-radius: 6px;
            flex-shrink: 0;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.75;
        }

        .footer-col h5 {
            font-size: 13px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col a {
            font-size: 14px;
            color: rgba(255, 255, 255, .45);
            text-decoration: none;
            transition: color .18s;
        }

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

        .footer-bottom {
            padding-top: 28px;
            display: flex;
            justify-content: space-between;
            font-size: 13px;
        }

        /* ── ANIMATIONS ── */
        @keyframes up {
            from {
                opacity: 0;
                transform: translateY(22px)
            }

            to {
                opacity: 1;
                transform: translateY(0)
            }
        }

        .reveal {
            opacity: 0;
            transform: translateY(28px);
            transition: opacity .6s ease, transform .6s ease;
        }

        .reveal.in {
            opacity: 1;
            transform: none;
        }

        .d1 {
            transition-delay: .1s;
        }

        .d2 {
            transition-delay: .2s;
        }

        /* ── RESPONSIVE 960px ── */
        @media (max-width: 960px) {

            /* 全局布局 */
            .pain-grid {
                grid-template-columns: 1fr;
            }

            .asset-cards {
                grid-template-columns: 1fr;
            }

            .sol-row,
            .sol-row.flip {
                grid-template-columns: 1fr;
                direction: ltr;
            }

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

            .how-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }

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

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

            .nav-links {
                display: none;
            }

            /* pipeline 纵向 */
            .pipeline {
                flex-direction: column;
                gap: 20px;
            }

            .pipe-step+.pipe-step::before {
                content: '↓';
                left: 50%;
                top: -16px;
                transform: translateX(-50%);
            }

            /* 风险卡片 */
            .risk-card {
                grid-template-columns: 1fr;
            }

            .risk-stat {
                display: none;
            }

            /* 创意模块主图比例 */
            .sc-main {
                aspect-ratio: 4/3;
            }

            /* flow-widget 纵向排列 */
            .flow-widget {
                padding: 20px 16px 16px;
            }

            .fw-steps {
                flex-direction: column;
                align-items: stretch;
                gap: 8px;
            }

            .fw-arrow {
                transform: rotate(90deg);
                align-self: center;
                margin-bottom: 0;
            }

            .fw-step {
                padding: 14px 14px 12px;
            }
        }

        /* ── RESPONSIVE 600px ── */
        @media (max-width: 600px) {
            .pricing-grid {
                grid-template-columns: 1fr;
            }

            .section {
                padding: 72px 20px;
            }

            .cta-box {
                padding: 48px 24px;
            }

            .hero {
                padding: 120px 20px 72px;
            }

            .pain-card {
                padding: 32px 24px;
            }

            .sol-row {
                gap: 40px;
            }

            .how-grid {
                gap: 32px;
            }

            .footer-top {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .footer-bottom {
                flex-direction: column;
                gap: 8px;
            }
        }

        .pf-modal {
            position: fixed;
            inset: 0;
            display: none;
            z-index: 9999;
        }

        .pf-modal-mask {
            position: absolute;
            inset: 0;
            background: rgba(0, 0, 0, 0.5);
        }

        .pf-modal-box {
            position: relative;
            width: 80%;
            max-width: 320px;
            margin: 30% auto;
            background: #fff;
            border-radius: 16px;
            padding: 20px;
            text-align: center;
            z-index: 2;
        }

        .pf-modal-title {
            font-size: 18px;
            font-weight: bold;
            margin-bottom: 10px;
        }

        .pf-modal-desc {
            font-size: 14px;
            color: #666;
            margin-bottom: 20px;
            line-height: 1.5;
        }

        .pf-modal-actions {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .pf-modal-close {
            display: flex;
            flex-direction: column;
            margin-top: 10px;
        }

        .pf-btn {
            padding: 12px;
            border-radius: 10px;
            border: none;
            font-size: 15px;
        }

        .pf-btn-primary {
            background: #0057FF;
            color: #fff;
        }

        .pf-btn-secondary {
            background: #f2f3f5;
            color: #333;
        }