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

        :root {
            --primary: #3E8CFA;
            --primary-dark: #1E63C9;
            --primary-darker: #14478F;
            --primary-light: #EAF2FF;
            --primary-soft: #CFE1FF;
            --primary-ghost: #F3F8FF;
            --accent: #6BA6FF;

            --hero-blue: #0A2E6E;
            --hero-blue-2: #164B9E;
            --hero-indigo: #3A3F9E;
            --hero-purple: #7B3D9E;
            --hero-magenta: #B23A8F;

            --text-1: #16233A;
            --text-2: #4A5A72;
            --text-3: #7C8AA0;

            --bg-page: #F5F8FD;
            --bg-white: #ffffff;
            --bg-tint: #EEF4FE;
            --border: #E3EAF5;
            --border-strong: #D3DEEE;

            --shadow-xs: 0 1px 2px rgba(30, 99, 201, .06);
            --shadow-sm: 0 2px 8px rgba(30, 99, 201, .07);
            --shadow-md: 0 10px 30px -10px rgba(30, 99, 201, .18);
            --shadow-lg: 0 24px 60px -18px rgba(30, 99, 201, .26);

            --r-sm: 12px;
            --r-md: 16px;
            --r-lg: 22px;
            --r-xl: 30px;

            --font: 'Inter', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei',
                    'Helvetica Neue', Arial, sans-serif;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font);
            background: var(--bg-page);
            color: var(--text-1);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a { text-decoration: none; color: inherit; }
        ul { list-style: none; }
        img { max-width: 100%; display: block; }
        button { font-family: inherit; }

        ::selection {
            background: var(--primary-soft);
            color: var(--primary-darker);
        }

        ::-webkit-scrollbar { width: 10px; height: 10px; }
        ::-webkit-scrollbar-track { background: var(--bg-tint); }
        ::-webkit-scrollbar-thumb {
            background: var(--primary-soft);
            border-radius: 10px;
            border: 2px solid var(--bg-tint);
        }
        ::-webkit-scrollbar-thumb:hover { background: var(--accent); }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== 导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 200;
            background: transparent;
            border-bottom: 1px solid transparent;
            transition: background .35s ease, border-color .35s ease,
                        box-shadow .35s ease;
        }

        .site-header.is-solid {
            background: rgba(255, 255, 255, .9);
            backdrop-filter: saturate(180%) blur(18px);
            -webkit-backdrop-filter: saturate(180%) blur(18px);
            border-bottom-color: var(--border);
            box-shadow: 0 1px 0 rgba(30, 99, 201, .04),
                        0 8px 24px -16px rgba(30, 99, 201, .28);
        }

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

        .logo {
            display: flex;
            align-items: center;
            gap: 11px;
            flex-shrink: 0;
        }

        .logo-mark {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            box-shadow: 0 0 0 1px rgba(255, 255, 255, .16),
                        0 6px 16px -6px rgba(0, 0, 0, .45);
            transition: transform .3s cubic-bezier(.34, 1.56, .64, 1);
        }

        .logo:hover .logo-mark { transform: translateY(-2px) rotate(-4deg); }

        .logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1;
        }

        .logo-text strong {
            font-size: 19px;
            font-weight: 800;
            letter-spacing: -.5px;
            color: #fff;
            transition: color .3s;
        }

        .logo-text strong i {
            font-style: normal;
            color: #A9D2FF;
            transition: color .3s;
        }

        .logo-text em {
            font-style: normal;
            font-size: 10px;
            font-weight: 600;
            letter-spacing: 1.2px;
            color: rgba(255, 255, 255, .58);
            margin-top: 5px;
            transition: color .3s;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 2px;
        }

        .nav-links > a:not(.nav-cta) {
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, .86);
            padding: 8px 12px;
            border-radius: 8px;
            transition: color .2s, background .2s;
        }

        .nav-links > a:not(.nav-cta):hover {
            color: #fff;
            background: rgba(255, 255, 255, .12);
        }

        .nav-cta {
            margin-left: 12px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 22px;
            border-radius: 100px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary-dark);
            background: #fff;
            box-shadow: 0 10px 24px -10px rgba(0, 0, 0, .5);
            transition: transform .22s, box-shadow .22s, background .22s, color .22s;
            white-space: nowrap;
        }

        .nav-cta:hover {
            transform: translateY(-2px);
            background: var(--primary-light);
        }

        .site-header.is-solid .logo-text strong { color: var(--text-1); }
        .site-header.is-solid .logo-text strong i { color: var(--primary); }
        .site-header.is-solid .logo-text em { color: var(--text-3); }
        .site-header.is-solid .logo-mark {
            box-shadow: 0 6px 16px -6px rgba(62, 140, 250, .7);
        }
        .site-header.is-solid .nav-links > a:not(.nav-cta) { color: var(--text-2); }
        .site-header.is-solid .nav-links > a:not(.nav-cta):hover {
            color: var(--primary);
            background: var(--primary-ghost);
        }
        .site-header.is-solid .nav-cta {
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            box-shadow: 0 8px 20px -8px rgba(62, 140, 250, .85);
        }

        .mobile-menu-btn {
            display: none;
            width: 42px;
            height: 42px;
            border: 1px solid rgba(255, 255, 255, .3);
            background: rgba(255, 255, 255, .08);
            border-radius: 11px;
            color: #fff;
            cursor: pointer;
            align-items: center;
            justify-content: center;
        }

        .site-header.is-solid .mobile-menu-btn {
            color: var(--text-2);
            border-color: var(--border);
            background: #fff;
        }

        /* ========== Hero ========== */
        .hero {
            position: relative;
            overflow: hidden;
            margin-top: -72px;
            min-height: 100vh;
            min-height: 100svh;
            display: flex;
            flex-direction: column;
            justify-content: center;
            padding: 128px 0 96px;
            color: #fff;
            background:
                radial-gradient(ellipse 55% 60% at 8% -6%, rgba(62, 140, 250, .62), transparent 62%),
                radial-gradient(ellipse 52% 58% at 96% 16%, rgba(178, 58, 143, .58), transparent 66%),
                radial-gradient(ellipse 62% 60% at 68% 108%, rgba(90, 58, 166, .52), transparent 68%),
                linear-gradient(128deg,
                    var(--hero-blue) 0%,
                    var(--hero-blue-2) 24%,
                    var(--hero-indigo) 48%,
                    var(--hero-purple) 74%,
                    var(--hero-magenta) 100%);
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image:
                linear-gradient(rgba(255, 255, 255, .07) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, .07) 1px, transparent 1px);
            background-size: 48px 48px;
            -webkit-mask-image: radial-gradient(ellipse 80% 72% at 50% 4%, #000 8%, transparent 74%);
            mask-image: radial-gradient(ellipse 80% 72% at 50% 4%, #000 8%, transparent 74%);
            pointer-events: none;
        }

        .hero::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -1px;
            height: 220px;
            background: linear-gradient(180deg,
                rgba(255, 255, 255, 0) 0%,
                rgba(255, 255, 255, .18) 38%,
                rgba(255, 255, 255, .62) 72%,
                rgba(255, 255, 255, .94) 92%,
                #ffffff 100%);
            pointer-events: none;
            z-index: 1;
        }

        .hero .container { position: relative; z-index: 2; width: 100%; }

        .hero-grid {
            display: grid;
            grid-template-columns: 1.06fr .94fr;
            gap: 56px;
            align-items: center;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 7px 16px 7px 8px;
            background: rgba(255, 255, 255, .12);
            border: 1px solid rgba(255, 255, 255, .24);
            border-radius: 100px;
            font-size: 13px;
            font-weight: 600;
            color: #fff;
            backdrop-filter: blur(10px);
            margin-bottom: 24px;
        }

        .hero-badge .pulse {
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .18);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 11px;
        }

        .hero h1 {
            font-size: clamp(30px, 3.9vw, 48px);
            font-weight: 800;
            line-height: 1.22;
            letter-spacing: -1.6px;
            margin-bottom: 20px;
            color: #fff;
        }

        .hero h1 .grad {
            background: linear-gradient(104deg, #A8D4FF 0%, #FFC9E6 52%, #FFA8CE 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-sub {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, .8);
            max-width: 580px;
            margin-bottom: 30px;
        }

        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: 40px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 15px 32px;
            border-radius: 100px;
            font-size: 15px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: transform .22s cubic-bezier(.34, 1.4, .64, 1),
                        box-shadow .22s, background .22s, border-color .22s;
            white-space: nowrap;
        }

        .btn-primary {
            color: var(--primary-dark);
            background: #fff;
            box-shadow: 0 18px 40px -16px rgba(0, 0, 0, .62);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            background: var(--primary-light);
        }

        .btn-ghost {
            background: rgba(255, 255, 255, .1);
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, .32);
            backdrop-filter: blur(8px);
        }

        .btn-ghost:hover {
            border-color: rgba(255, 255, 255, .72);
            background: rgba(255, 255, 255, .18);
            transform: translateY(-3px);
        }

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            border-top: 1px solid rgba(255, 255, 255, .18);
            padding-top: 24px;
        }

        .stat-item {
            padding-right: 20px;
            margin-right: 20px;
            border-right: 1px solid rgba(255, 255, 255, .16);
            display: flex;
            flex-direction: column;
        }

        .stat-item:last-child { border-right: none; margin-right: 0; padding-right: 0; }

        .stat-num {
            font-size: 24px;
            font-weight: 800;
            letter-spacing: -.8px;
            color: #fff;
            font-variant-numeric: tabular-nums;
            line-height: 1.2;
        }

        .stat-num span {
            background: linear-gradient(110deg, #A8D4FF, #FFC9E6);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .stat-label {
            font-size: 12.5px;
            color: rgba(255, 255, 255, .62);
            margin-top: 3px;
            font-weight: 500;
        }

        .hero-visual {
            position: relative;
            height: 400px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .hv-glow {
            position: absolute;
            inset: -34px;
            background:
                radial-gradient(circle at 30% 30%, rgba(62, 140, 250, .55), transparent 58%),
                radial-gradient(circle at 72% 68%, rgba(178, 58, 143, .5), transparent 60%);
            filter: blur(36px);
            pointer-events: none;
        }

        .hv-main {
            position: relative;
            width: 100%;
            max-width: 392px;
            background: #fff;
            border-radius: 20px;
            padding: 15px;
            box-shadow:
                0 0 0 1px rgba(255, 255, 255, .12),
                0 44px 84px -30px rgba(0, 0, 0, .7);
            transform: rotate(-1.4deg);
            transition: transform .5s cubic-bezier(.34, 1.2, .64, 1);
        }

        .hero-visual:hover .hv-main { transform: rotate(0deg) translateY(-6px); }

        .hv-topbar {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 2px 4px 13px;
        }

        .hv-dot {
            width: 8px; height: 8px;
            border-radius: 50%;
            background: #E4EBF6;
        }
        .hv-dot:nth-child(1) { background: #FF6B6B; opacity: .65; }
        .hv-dot:nth-child(2) { background: #FFB648; opacity: .75; }
        .hv-dot:nth-child(3) { background: #4ECB8E; opacity: .75; }

        .hv-urlbar {
            flex: 1;
            height: 20px;
            border-radius: 6px;
            background: var(--bg-tint);
            margin-left: 8px;
            position: relative;
            overflow: hidden;
        }

        .hv-urlbar::after {
            content: '';
            position: absolute;
            left: 0; top: 0; bottom: 0;
            width: 46%;
            background: linear-gradient(90deg, var(--primary-soft), transparent);
            animation: shimmer 3.4s ease-in-out infinite;
        }

        @keyframes shimmer {
            0%, 100% { transform: translateX(-30%); opacity: .6; }
            50%      { transform: translateX(140%); opacity: 1; }
        }

        .hv-slide {
            border-radius: 13px;
            background: linear-gradient(150deg, #F7FAFF 0%, #E9F1FE 100%);
            border: 1px solid rgba(62, 140, 250, .12);
            padding: 20px 18px 16px;
            position: relative;
            overflow: hidden;
        }

        .hv-slide::before {
            content: '';
            position: absolute;
            top: -40px; right: -40px;
            width: 130px; height: 130px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(62, 140, 250, .16), transparent 68%);
        }

        .hv-line-title {
            width: 62%;
            height: 11px;
            border-radius: 6px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: .85;
            margin-bottom: 9px;
        }

        .hv-line-sub {
            width: 40%;
            height: 7px;
            border-radius: 4px;
            background: rgba(62, 140, 250, .3);
            margin-bottom: 18px;
        }

        .hv-chart {
            display: flex;
            align-items: flex-end;
            gap: 9px;
            height: 82px;
            padding-top: 8px;
            border-top: 1px dashed rgba(62, 140, 250, .25);
        }

        .hv-chart span {
            flex: 1;
            border-radius: 5px 5px 3px 3px;
            background: linear-gradient(180deg, var(--accent), var(--primary));
            opacity: .78;
            animation: barGrow 1.4s cubic-bezier(.22, 1, .36, 1) backwards;
        }
        .hv-chart span:nth-child(1) { height: 38%; animation-delay: .05s; }
        .hv-chart span:nth-child(2) { height: 62%; animation-delay: .12s; opacity: .92; }
        .hv-chart span:nth-child(3) { height: 46%; animation-delay: .19s; opacity: .68; }
        .hv-chart span:nth-child(4) { height: 84%; animation-delay: .26s; opacity: 1; }
        .hv-chart span:nth-child(5) { height: 68%; animation-delay: .33s; opacity: .85; }

        @keyframes barGrow {
            from { transform: scaleY(0); transform-origin: bottom; }
            to   { transform: scaleY(1); transform-origin: bottom; }
        }

        .hv-thumbs {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 8px;
            margin-top: 13px;
            padding: 0 2px;
        }

        .hv-thumbs span {
            height: 34px;
            border-radius: 7px;
            background: var(--bg-tint);
            border: 1px solid var(--border);
            position: relative;
            overflow: hidden;
        }

        .hv-thumbs span::after {
            content: '';
            position: absolute;
            left: 6px; top: 8px;
            width: 55%; height: 4px;
            border-radius: 3px;
            background: var(--border-strong);
        }

        .hv-thumbs span:first-child {
            background: linear-gradient(140deg, var(--primary), var(--primary-dark));
            border-color: transparent;
        }
        .hv-thumbs span:first-child::after { background: rgba(255, 255, 255, .55); }

        .hv-float {
            position: absolute;
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 10px 16px;
            background: #fff;
            border-radius: 100px;
            font-size: 12.5px;
            font-weight: 600;
            color: var(--text-1);
            box-shadow: 0 22px 44px -18px rgba(0, 0, 0, .65),
                        0 0 0 1px rgba(255, 255, 255, .5);
            white-space: nowrap;
        }

        .hv-float-1 { top: 26px; left: -18px; animation: floatY 5s ease-in-out infinite; }
        .hv-float-2 { bottom: 34px; right: -22px; animation: floatY 5s ease-in-out infinite .9s; }
        .hv-float b { color: var(--primary-dark); font-weight: 800; }

        @keyframes floatY {
            0%, 100% { transform: translateY(0); }
            50%      { transform: translateY(-9px); }
        }

        /* ========== Section ========== */
        .section { position: relative; padding: 46px 0; }
        .section--white { background: var(--bg-white); }
        .section--tint  { background: var(--bg-tint); }
        .section--white + .section--white,
        .section--tint + .section--tint { border-top: 1px solid var(--border); }

        .section-header {
            text-align: center;
            max-width: 740px;
            margin: 0 auto 28px;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 6px 15px;
            background: var(--primary-light);
            color: var(--primary-dark);
            border-radius: 100px;
            font-size: 12.5px;
            font-weight: 700;
            letter-spacing: .9px;
            margin-bottom: 14px;
            border: 1px solid rgba(62, 140, 250, .16);
        }

        .section-tag::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--primary);
            box-shadow: 0 0 0 3px rgba(62, 140, 250, .18);
        }

        .section-header h2 {
            font-size: clamp(25px, 3vw, 36px);
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: -1.1px;
            margin-bottom: 12px;
            color: var(--text-1);
        }

        .section-header p {
            font-size: 15.5px;
            line-height: 1.75;
            color: var(--text-2);
        }

        /* ========== 产品介绍 ========== */
        .intro-grid {
            display: grid;
            grid-template-columns: 1.1fr .9fr;
            gap: 56px;
            align-items: center;
        }

        .intro-text h3 {
            font-size: 22px;
            font-weight: 800;
            letter-spacing: -.5px;
            line-height: 1.4;
            margin-bottom: 16px;
        }

        .intro-text h3 span { color: var(--primary); }

        .intro-text p {
            font-size: 15.5px;
            line-height: 1.85;
            color: var(--text-2);
            margin-bottom: 15px;
        }

        .intro-text p strong {
            color: var(--text-1);
            font-weight: 700;
            background: linear-gradient(180deg, transparent 62%, rgba(62, 140, 250, .22) 62%);
            padding: 0 2px;
        }

        .chips {
            display: flex;
            flex-wrap: wrap;
            gap: 9px;
            margin-top: 22px;
        }

        .chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 15px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 100px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-2);
            box-shadow: var(--shadow-xs);
        }

        .intro-visual {
            position: relative;
            background: #fff;
            border-radius: var(--r-lg);
            border: 1px solid var(--border);
            padding: 8px;
            box-shadow: var(--shadow-md);
        }

        .intro-visual-inner {
            border-radius: var(--r-md);
            background: linear-gradient(170deg, #FBFDFF, #F2F7FF);
            padding: 10px 16px;
        }

        .visual-line {
            display: flex;
            align-items: center;
            gap: 15px;
            padding: 14px 4px;
            border-bottom: 1px dashed var(--border-strong);
        }

        .visual-line:last-child { border-bottom: none; }

        .visual-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: #fff;
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            flex-shrink: 0;
        }

        .visual-content strong {
            display: block;
            font-size: 14px;
            font-weight: 700;
            color: var(--text-1);
            margin-bottom: 2px;
        }

        .visual-content span {
            font-size: 12.6px;
            color: var(--text-3);
            line-height: 1.55;
            display: block;
        }

        /* ========== 核心功能 ========== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .feature-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--r-md);
            padding: 28px 24px 26px;
            transition: transform .28s cubic-bezier(.34, 1.2, .64, 1),
                        box-shadow .28s;
        }

        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
        }

        .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 16px;
            background: linear-gradient(150deg, var(--primary-light), #fff);
            border: 1px solid rgba(62, 140, 250, .18);
        }

        .feature-card h3 {
            font-size: 16px;
            font-weight: 700;
            letter-spacing: -.2px;
            margin-bottom: 7px;
        }

        .feature-card p {
            font-size: 13.7px;
            line-height: 1.72;
            color: var(--text-2);
        }

        /* ========== 适合什么场景 ========== */
        .scenes-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .scene-card {
            position: relative;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--r-md);
            padding: 28px 24px;
            transition: transform .28s, box-shadow .28s;
        }

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

        .scene-badge {
            display: inline-block;
            font-size: 11.5px;
            font-weight: 700;
            letter-spacing: .5px;
            color: var(--primary-dark);
            background: var(--primary-light);
            border: 1px solid rgba(62, 140, 250, .16);
            padding: 4px 12px;
            border-radius: 100px;
            margin-bottom: 14px;
        }

        .scene-card h3 {
            font-size: 16.5px;
            font-weight: 700;
            margin-bottom: 7px;
        }

        .scene-card p {
            font-size: 13.7px;
            line-height: 1.72;
            color: var(--text-2);
        }

        /* ========== 优缺点 ========== */
        .pros-cons {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            max-width: 960px;
            margin: 0 auto;
        }

        .pc-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--r-md);
            padding: 28px 26px;
        }

        .pc-card h3 {
            font-size: 16px;
            font-weight: 800;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .pc-card h3 .mark {
            width: 26px;
            height: 26px;
            border-radius: 8px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
        }

        .pc-card.pros h3 .mark { background: #E6F7EE; color: #1A7F4B; }
        .pc-card.cons h3 .mark { background: #FFF3E6; color: #B35C00; }

        .pc-list li {
            position: relative;
            padding-left: 20px;
            font-size: 14px;
            line-height: 1.75;
            color: var(--text-2);
            margin-bottom: 10px;
        }

        .pc-list li:last-child { margin-bottom: 0; }

        .pc-list li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 9px;
            width: 6px;
            height: 6px;
            border-radius: 50%;
        }

        .pros .pc-list li::before { background: #2FB86B; }
        .cons .pc-list li::before { background: #E0902E; }

        /* ========== 使用方法 ========== */
        .steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            position: relative;
        }

        .steps::before {
            content: '';
            position: absolute;
            top: 26px;
            left: 12.5%;
            right: 12.5%;
            height: 2px;
            background: linear-gradient(90deg,
                rgba(62, 140, 250, .05),
                rgba(62, 140, 250, .3) 20%,
                rgba(62, 140, 250, .3) 80%,
                rgba(62, 140, 250, .05));
        }

        .step {
            position: relative;
            text-align: center;
            padding: 0 18px;
            z-index: 1;
        }

        .step-num {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            margin: 0 auto 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 800;
            color: #fff;
            background: linear-gradient(140deg, var(--primary), var(--primary-dark));
            box-shadow:
                0 0 0 6px var(--bg-page),
                0 0 0 7px rgba(62, 140, 250, .18);
            font-variant-numeric: tabular-nums;
        }

        .step h3 {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .step p {
            font-size: 13.2px;
            line-height: 1.68;
            color: var(--text-2);
            max-width: 220px;
            margin: 0 auto;
        }

        .step p strong { color: var(--primary-dark); font-weight: 700; }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--r-sm);
            overflow: hidden;
        }

        .faq-item[open] {
            border-color: rgba(62, 140, 250, .35);
            box-shadow: var(--shadow-md);
        }

        .faq-item summary {
            padding: 18px 22px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-1);
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 18px;
        }

        .faq-item summary::-webkit-details-marker { display: none; }

        .faq-item summary::after {
            content: '';
            flex-shrink: 0;
            width: 22px;
            height: 22px;
            border-radius: 50%;
            background: var(--primary-light);
            background-image:
                linear-gradient(var(--primary), var(--primary)),
                linear-gradient(var(--primary), var(--primary));
            background-size: 10px 2px, 2px 10px;
            background-position: center;
            background-repeat: no-repeat;
            transition: transform .3s;
        }

        .faq-item[open] summary::after {
            transform: rotate(135deg);
            background-color: var(--primary);
            background-image:
                linear-gradient(#fff, #fff),
                linear-gradient(#fff, #fff);
        }

        .faq-answer {
            padding: 0 22px 20px;
            font-size: 14.2px;
            line-height: 1.85;
            color: var(--text-2);
            border-top: 1px dashed var(--border);
            padding-top: 14px;
        }

        .faq-answer strong {
            color: var(--text-1);
            font-weight: 700;
        }

        /* ========== 产品资讯 ========== */
        .news-timeline {
            max-width: 780px;
            margin: 0 auto;
            position: relative;
            padding-left: 30px;
        }

        .news-timeline::before {
            content: '';
            position: absolute;
            left: 6px;
            top: 10px;
            bottom: 10px;
            width: 2px;
            border-radius: 2px;
            background: linear-gradient(180deg, var(--primary) 0%, var(--accent) 35%, var(--primary-soft) 80%, transparent 100%);
        }

        .news-item {
            position: relative;
            padding-bottom: 30px;
        }

        .news-item:last-child { padding-bottom: 0; }

        .news-item::before {
            content: '';
            position: absolute;
            left: -30px;
            top: 7px;
            width: 11px;
            height: 11px;
            border-radius: 50%;
            background: var(--primary);
            border: 2.5px solid #fff;
            box-shadow: 0 0 0 3px rgba(62, 140, 250, .2);
        }

        .news-date {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            color: var(--primary-dark);
            background: var(--primary-light);
            border: 1px solid rgba(62, 140, 250, .16);
            padding: 3px 11px;
            border-radius: 100px;
            margin-bottom: 8px;
            font-variant-numeric: tabular-nums;
        }

        .news-item h3 {
            font-size: 15.5px;
            font-weight: 700;
            margin-bottom: 4px;
            color: var(--text-1);
        }

        .news-item p {
            font-size: 13.8px;
            line-height: 1.75;
            color: var(--text-2);
        }

        /* ========== CTA ========== */
        .cta-section { padding: 0 0 46px; }

        .cta-banner {
            position: relative;
            overflow: hidden;
            border-radius: var(--r-xl);
            padding: 52px 48px;
            text-align: center;
            color: #fff;
            background:
                radial-gradient(ellipse 60% 80% at 15% 0%, rgba(255, 255, 255, .18), transparent 60%),
                radial-gradient(ellipse 55% 70% at 92% 100%, rgba(178, 58, 143, .55), transparent 62%),
                linear-gradient(128deg,
                    var(--primary-darker) 0%,
                    var(--primary-dark) 30%,
                    var(--primary) 62%,
                    var(--hero-purple) 100%);
            box-shadow: 0 40px 80px -34px rgba(20, 71, 143, .8);
        }

        .cta-banner h2 {
            font-size: clamp(23px, 2.8vw, 34px);
            font-weight: 800;
            letter-spacing: -1px;
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .cta-banner p {
            font-size: 15.5px;
            opacity: .9;
            margin-bottom: 26px;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-banner .btn {
            background: #fff;
            color: var(--primary-dark);
            font-size: 15.5px;
            padding: 16px 40px;
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: #fff;
            border-top: 1px solid var(--border);
            padding: 34px 0 30px;
        }

        .footer-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 24px;
            flex-wrap: wrap;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-brand img {
            width: 30px;
            height: 30px;
            border-radius: 9px;
        }

        .footer-brand span {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-1);
        }

        .footer-copy {
            font-size: 12.5px;
            color: var(--text-3);
        }

        .footer-links {
            display: flex;
            gap: 22px;
            font-size: 13px;
            flex-wrap: wrap;
        }

        .footer-links a {
            color: var(--text-3);
            transition: color .2s;
        }

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

        /* ========== 动画 ========== */
        .reveal {
            opacity: 0;
            transform: translateY(22px);
            transition: opacity .65s cubic-bezier(.22, 1, .36, 1),
                        transform .65s cubic-bezier(.22, 1, .36, 1);
        }

        .reveal.is-visible { opacity: 1; transform: none; }

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

        /* ========== 响应式 ========== */
        @media (max-width: 1080px) {
            .hero-grid { gap: 36px; }
            .features-grid { grid-template-columns: repeat(2, 1fr); }
            .scenes-grid { grid-template-columns: repeat(2, 1fr); }
            .nav-links > a:not(.nav-cta) { padding: 8px 9px; font-size: 13.5px; }
        }

        @media (max-width: 940px) {
            .hero-grid { grid-template-columns: 1fr; gap: 48px; }
            .hero-visual { height: 340px; order: 2; }
            .hero-sub { max-width: 100%; }
            .intro-grid { grid-template-columns: 1fr; gap: 36px; }
            .steps { grid-template-columns: repeat(2, 1fr); row-gap: 36px; }
            .steps::before { display: none; }
            .section { padding: 36px 0; }
            .cta-section { padding-bottom: 36px; }
            .pros-cons { grid-template-columns: 1fr; }
        }

        @media (max-height: 700px) and (min-width: 941px) {
            .hero { padding-top: 104px; padding-bottom: 72px; }
            .hero-actions { margin-bottom: 30px; }
            .hero-visual { height: 356px; }
        }

        @media (max-width: 860px) {
            .nav-links {
                position: absolute;
                top: 72px;
                left: 16px;
                right: 16px;
                display: none;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                background: #fff;
                border: 1px solid var(--border);
                border-radius: var(--r-md);
                padding: 12px;
                box-shadow: var(--shadow-lg);
            }

            .nav-links.is-open { display: flex; }

            .site-header:not(.is-solid) .nav-links.is-open > a:not(.nav-cta) {
                color: var(--text-2);
            }
            .site-header:not(.is-solid) .nav-links.is-open > a:not(.nav-cta):hover {
                color: var(--primary);
                background: var(--primary-ghost);
            }
            .site-header:not(.is-solid) .nav-links.is-open .nav-cta {
                color: #fff;
                background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            }

            .nav-links > a:not(.nav-cta) { padding: 11px 14px; border-radius: 9px; }
            .nav-cta { margin: 6px 0 0; justify-content: center; padding: 12px 20px; }
            .mobile-menu-btn { display: flex; }
        }

        @media (max-width: 680px) {
            .container { padding: 0 18px; }
            .nav-inner { height: 64px; }
            .site-header .nav-links { top: 64px; }
            .logo-text strong { font-size: 17px; }
            .logo-text em { font-size: 9px; }
            .logo-mark { width: 38px; height: 38px; border-radius: 11px; }

            .hero {
                margin-top: -64px;
                padding-top: 96px;
                padding-bottom: 72px;
                min-height: 100vh;
                min-height: 100svh;
            }
            .hero::after { height: 150px; }
            .hero h1 { letter-spacing: -1.1px; }
            .hero-sub { font-size: 15.5px; }
            .btn { padding: 13px 24px; font-size: 14.5px; flex: 1 1 auto; }

            .hero-stats { gap: 16px 0; }
            .stat-item {
                padding-right: 18px;
                margin-right: 18px;
                flex: 1 1 45%;
            }
            .stat-item:nth-child(2) { border-right: none; margin-right: 0; padding-right: 0; }
            .stat-num { font-size: 21px; }

            .hero-visual { height: 300px; }
            .hv-float-1 { left: -6px; top: 10px; font-size: 11.5px; padding: 8px 13px; }
            .hv-float-2 { right: -6px; bottom: 14px; font-size: 11.5px; padding: 8px 13px; }

            .features-grid,
            .scenes-grid { grid-template-columns: 1fr; }
            .steps { grid-template-columns: 1fr; row-gap: 30px; }

            .section-header { margin-bottom: 20px; }
            .section { padding: 30px 0; }

            .cta-banner { padding: 40px 22px; border-radius: var(--r-lg); }
            .cta-banner .btn { width: 100%; }
            .cta-section { padding-bottom: 30px; }

            .footer-inner { flex-direction: column; text-align: center; gap: 16px; }
            .footer-links { justify-content: center; gap: 16px; }

            .faq-item summary { padding: 16px 18px; font-size: 14.3px; }
            .faq-answer { padding: 13px 18px 17px; font-size: 13.7px; }

            .news-timeline { padding-left: 24px; }
            .news-item::before { left: -24px; }
        }