:root {
            --ink: #071426;
            --muted: #64748b;
            --blue: #135ef2;
            --cyan: #19c7d6;
            --line: #dce5f0;
            --soft: #f4f8fc;
            --white: #fff;
            --navy: #071a37;
            --shadow: 0 24px 70px rgba(7, 26, 55, .12);
            --radius: 22px;
            --wrap: 1180px
        }

        * {
            box-sizing: border-box
        }

        html {
            scroll-behavior: smooth
        }

        body {
            margin: 0;
            color: var(--ink);
            background: #fff;
            font-family: "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
            line-height: 1.7
        }

        a {
            color: inherit;
            text-decoration: none
        }

        .wrap {
            width: min(var(--wrap), calc(100% - 40px));
            margin: auto
        }

        .nav {
            position: sticky;
            top: 0;
            z-index: 20;
            background: rgba(255, 255, 255, .88);
            border-bottom: 1px solid rgba(220, 229, 240, .75);
            backdrop-filter: blur(18px)
        }

        .nav-inner {
            height: 72px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 13px;
            font-size: 20px;
            font-weight: 900
        }

        .logo {
            display: block;
            width: auto;
            height: 42px;
            max-width: 150px;
            object-fit: contain
        }

        .links {
            width: 520px;
            margin-left: auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            color: #475569;
            font-size: 18px
        }

        .links a {
            flex: 1;
            text-align: center;
            white-space: nowrap
        }

        .nav-cta, .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            font-weight: 800;
            transition: .2s ease
        }

        .nav-cta {
            height: 42px;
            padding: 0 18px;
            color: #fff;
            background: var(--ink)
        }

        .btn {
            min-height: 52px;
            padding: 0 24px;
            border: 1px solid transparent
        }

        .btn:hover, .nav-cta:hover {
            transform: translateY(-2px)
        }

        .btn-primary {
            color: #fff;
            background: var(--blue);
            box-shadow: 0 14px 30px rgba(19, 94, 242, .24)
        }

        .btn-ghost {
            border-color: #cdd9e8;
            background: #fff;
            color: #16345c
        }

        .hero {
            position: relative;
            overflow: hidden;
            padding: 92px 0 76px;
            background: radial-gradient(circle at 88% 18%, rgba(25, 199, 214, .16), transparent 30%), radial-gradient(circle at 12% 0, rgba(19, 94, 242, .14), transparent 33%), linear-gradient(180deg, #f8fbff, #fff)
        }

        .hero:after {
            content: "";
            position: absolute;
            right: -100px;
            top: 80px;
            width: 440px;
            height: 440px;
            border: 1px solid rgba(19, 94, 242, .13);
            border-radius: 50%;
            box-shadow: 0 0 0 70px rgba(19, 94, 242, .035), 0 0 0 140px rgba(19, 94, 242, .02)
        }

        .hero-grid {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1.1fr .9fr;
            align-items: center;
            gap: 64px
        }

        .eyebrow {
            display: inline-flex;
            gap: 8px;
            align-items: center;
            padding: 7px 12px;
            border: 1px solid #cfe0ff;
            border-radius: 99px;
            color: #164bb4;
            background: #edf4ff;
            font-size: 13px;
            font-weight: 800
        }

        .eyebrow:before {
            content: "";
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--cyan)
        }

        h1 {
            max-width: 720px;
            margin: 20px 0 22px;
            font-size: clamp(42px, 5vw, 68px);
            line-height: 1.08;
            letter-spacing: -2px
        }

        .gradient {
            color: var(--blue)
        }

        .hero-copy {
            max-width: 700px;
            margin: 0;
            color: #4b5d73;
            font-size: 18px
        }

        .actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            margin-top: 32px
        }

        .proof {
            display: flex;
            gap: 26px;
            flex-wrap: wrap;
            margin-top: 34px;
            color: #526176;
            font-size: 13px
        }

        .proof b {
            display: block;
            color: var(--ink);
            font-size: 22px
        }

        .ai-board {
            padding: 24px;
            border: 1px solid rgba(207, 220, 235, .9);
            border-radius: 26px;
            background: rgba(255, 255, 255, .86);
            box-shadow: var(--shadow);
            backdrop-filter: blur(15px)
        }

        .board-head {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-bottom: 18px;
            border-bottom: 1px solid var(--line);
            font-weight: 800
        }

        .live {
            color: #07876d;
            font-size: 12px
        }

        .live:before {
            content: "";
            display: inline-block;
            width: 8px;
            height: 8px;
            margin-right: 7px;
            border-radius: 50%;
            background: #11b58c;
            box-shadow: 0 0 0 5px rgba(17, 181, 140, .12)
        }

        .question {
            margin: 18px 0;
            padding: 17px;
            border-radius: 15px;
            background: #eef4ff;
            color: #23406d;
            font-size: 14px
        }

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

        .answer div {
            padding: 13px 15px;
            border: 1px solid var(--line);
            border-radius: 14px;
            background: #fff;
            color: #42536a;
            font-size: 13px
        }

        .answer strong {
            color: var(--blue)
        }

        .platforms {
            padding: 24px 0;
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
            background: #fff
        }

        .platform-row {
            display: grid;
            grid-template-columns: 1.45fr repeat(5, 1fr);
            align-items: center;
            gap: 14px;
            color: #6b7b90;
            font-size: 14px
        }

        .platform-row > b {
            color: #26384f
        }

        .platform-badge {
            min-height: 62px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 10px 12px;
            border: 1px solid #e7edf5;
            border-radius: 14px;
            background: var(--soft);
            font-weight: 700;
            transition: .2s ease
        }

        .platform-badge:hover {
            transform: translateY(-2px);
            border-color: #c8d8f0;
            background: #fff;
            box-shadow: 0 10px 28px rgba(23, 43, 77, .08)
        }

        .platform-badge img {
            width: 30px;
            height: 30px;
            object-fit: contain
        }

        .platform-badge span {
            white-space: nowrap
        }

        section {
            padding: 88px 0
        }

        .section-head {
            max-width: 760px;
            margin-bottom: 38px
        }

        .section-head.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center
        }

        .kicker {
            margin: 0 0 8px;
            color: var(--blue);
            font-size: 13px;
            font-weight: 900;
            letter-spacing: 2px
        }

        h2 {
            margin: 0;
            font-size: clamp(31px, 4vw, 46px);
            line-height: 1.2;
            letter-spacing: -1px
        }

        .lead {
            margin: 15px 0 0;
            color: var(--muted);
            font-size: 16px
        }

        .grid4, .grid3 {
            display: grid;
            gap: 18px
        }

        .grid4 {
            grid-template-columns: repeat(4, 1fr)
        }

        .grid3 {
            grid-template-columns: repeat(3, 1fr)
        }

        .card {
            padding: 26px;
            border: 1px solid var(--line);
            border-radius: var(--radius);
            background: #fff;
            box-shadow: 0 12px 36px rgba(23, 43, 77, .06)
        }

        .card-no {
            width: 42px;
            height: 42px;
            display: grid;
            place-items: center;
            margin-bottom: 18px;
            border-radius: 13px;
            color: var(--blue);
            background: #edf4ff;
            font-weight: 900
        }

        .card h3 {
            margin: 0 0 10px;
            font-size: 19px;
            line-height: 1.35
        }

        .card p {
            margin: 0;
            color: var(--muted);
            font-size: 14px
        }

        .soft {
            background: var(--soft)
        }

        .adv-card {
            min-height: 220px;
            transition: .25s
        }

        .adv-card:hover {
            transform: translateY(-5px);
            border-color: #b7cdf5;
            box-shadow: 0 20px 50px rgba(19, 94, 242, .1)
        }

        .metric-band {
            padding: 54px 0;
            background: var(--navy);
            color: #fff
        }

        .metrics {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px
        }

        .metric {
            padding-left: 22px;
            border-left: 1px solid rgba(255, 255, 255, .2)
        }

        .metric strong {
            display: block;
            font-size: 38px;
            line-height: 1.15
        }

        .metric span {
            color: #aebbd0;
            font-size: 13px
        }

        .process {
            display: grid;
            grid-template-columns: .82fr 1.18fr;
            gap: 60px;
            align-items: start
        }

        .sticky {
            position: sticky;
            top: 110px
        }

        .steps {
            display: grid;
            gap: 14px
        }

        .step {
            display: grid;
            grid-template-columns: 54px 1fr;
            gap: 17px;
            padding: 22px;
            border: 1px solid var(--line);
            border-radius: 18px;
            background: #fff
        }

        .step-no {
            width: 46px;
            height: 46px;
            display: grid;
            place-items: center;
            border-radius: 14px;
            color: #fff;
            background: linear-gradient(135deg, var(--blue), #397cf8);
            font-weight: 900
        }

        .step h3 {
            margin: 0 0 6px;
            font-size: 18px
        }

        .step p {
            margin: 0;
            color: var(--muted);
            font-size: 14px
        }

        .audience {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 12px
        }

        .audience div {
            min-height: 148px;
            padding: 21px;
            border: 1px solid var(--line);
            border-radius: 17px;
            background: #fff
        }

        .audience b {
            display: block;
            margin-bottom: 8px
        }

        .audience span {
            color: var(--muted);
            font-size: 13px
        }

        .value {
            padding: 46px;
            border-radius: 28px;
            background: linear-gradient(135deg, #08224a, #0b397b 58%, #1267ca);
            color: #fff;
            box-shadow: var(--shadow)
        }

        .value-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center
        }

        .value h2 {
            color: #fff
        }

        .value p {
            color: #c7d7ec
        }

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

        .value-points div {
            padding: 18px;
            border: 1px solid rgba(255, 255, 255, .18);
            border-radius: 16px;
            background: rgba(255, 255, 255, .07);
            font-size: 14px
        }

        .faq {
            max-width: 850px;
            margin: auto;
            display: grid;
            gap: 12px
        }

        details {
            border: 1px solid var(--line);
            border-radius: 16px;
            background: #fff
        }

        summary {
            cursor: pointer;
            padding: 19px 22px;
            font-weight: 800
        }

        details p {
            margin: 0;
            padding: 0 22px 20px;
            color: var(--muted);
            font-size: 14px
        }

        .cta {
            padding: 76px 0;
            background: #06162e;
            color: #fff
        }

        .cta-inner {
            display: grid;
            grid-template-columns: 1fr auto;
            align-items: center;
            gap: 30px
        }

        .cta h2 {
            color: #fff
        }

        .cta p {
            margin: 12px 0 0;
            color: #aebbd0
        }

        .footer {
            padding: 24px 0;
            background: #041025;
            color: #7f91aa;
            font-size: 12px
        }

        .footer-inner {
            display: flex;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap
        }

        @media (max-width: 960px) {
            .links {
                display: none
            }

            .hero-grid, .process, .value-grid {
                grid-template-columns: 1fr
            }

            .hero {
                padding-top: 64px
            }

            .ai-board {
                max-width: 620px
            }

            .platform-row {
                grid-template-columns: repeat(3, 1fr)
            }

            .platform-row > b {
                grid-column: 1/-1
            }

            .grid4 {
                grid-template-columns: repeat(2, 1fr)
            }

            .grid3 {
                grid-template-columns: repeat(2, 1fr)
            }

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

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

            .sticky {
                position: static
            }

            .cta-inner {
                grid-template-columns: 1fr
            }
        }

        @media (max-width: 620px) {
            .wrap {
                width: min(var(--wrap), calc(100% - 28px))
            }

            .nav-inner {
                height: 64px
            }

            .brand {
                font-size: 17px;
                gap: 9px
            }

            .logo {
                width: auto;
                height: 34px;
                max-width: 110px
            }

            .nav-cta {
                padding: 0 12px;
                font-size: 13px
            }

            h1 {
                font-size: 39px;
                letter-spacing: -1px
            }

            .hero-copy {
                font-size: 16px
            }

            .hero, .platforms + section, section {
                padding-top: 60px;
                padding-bottom: 60px
            }

            .proof {
                display: grid;
                grid-template-columns: 1fr 1fr
            }

            .platform-row {
                grid-template-columns: repeat(2, 1fr)
            }

            .platform-badge {
                min-height: 58px
            }

            .grid4, .grid3, .metrics, .audience, .value-points {
                grid-template-columns: 1fr
            }

            .metric {
                padding: 14px 0 14px 18px
            }

            .value {
                padding: 28px
            }

            .actions .btn {
                width: 100%
            }

            .cta .btn {
                width: 100%
            }
        }