:root {
    --primary: #3d5cff;
    --primary-dark: #1f3ad1;
    --accent: #ff7a3d;
    --bg: #0b0f2b;
    --text-dark: #1a1f36;
    --text-gray: #6b7280;
}

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

body {
    font-family: "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
    color: var(--text-dark);
    background: #fff;
}

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

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

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

/* ---------- Header ---------- */
header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: #fff;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 22px;
    color: var(--primary-dark);
}

.logo_icon {
    width: 38px;
    height: 38px;
    border-radius: 10px;
}

.logo_text {
    width: 90px;
}

.btn-download {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    padding: 10px 26px;
    border-radius: 24px;
    font-size: 14px;
    font-weight: 600;
    box-shadow: 0 6px 16px rgba(61, 92, 255, 0.35);
    transition: transform 0.2s ease;
}

.btn-download:hover {
    transform: translateY(-2px);
}

/* ---------- Hero ---------- */
.hero {
    position: relative;
    background:
        radial-gradient(1200px 600px at 20% -10%, #2a3aff 0%, transparent 60%),
        linear-gradient(160deg, var(--bg) 0%, #151a45 100%);
    color: #fff;
    padding: 72px 0 100px;
    overflow: hidden;
}

.hero-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    position: relative;
    z-index: 2;
}

.hero-text {
    flex: 1;
    min-width: 280px;
}

.hero-badge {
    display: inline-block;
    padding: 6px 16px;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.1);
    font-size: 13px;
    margin-bottom: 20px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.hero-title {
    font-size: 40px;
    font-weight: 800;
    line-height: 1.35;
    margin-bottom: 18px;
}

.hero-title span {
    color: #7ce0ff;
}

.hero-sub {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.75);
    line-height: 1.8;
    margin-bottom: 30px;
    max-width: 460px;
}

.hero-points {
    display: flex;
    gap: 22px;
    margin-bottom: 34px;
    flex-wrap: wrap;
}

.hero-point {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.9);
}

.dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent);
}

.hero-cta {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}

.btn-primary-lg {
    background: linear-gradient(135deg, var(--accent), #ff4d6d);
    color: #fff;
    padding: 16px 36px;
    border-radius: 30px;
    font-weight: 700;
    font-size: 16px;
    box-shadow: 0 10px 24px rgba(255, 122, 61, 0.4);
}

.hero-note {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
}

.hero-visual {
    flex: 1;
    min-width: 280px;
    border-radius: 24px;
    padding: 14px;
    background: linear-gradient(160deg, #1b2050, #2a3170);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.35);
    position: relative;
}

.placeholder-note {
    position: absolute;
    bottom: 10px;
    left: 0;
    right: 0;
    text-align: center;
    font-size: 11px;
    color: rgba(255, 255, 255, 0.5);
}

/* ---------- Hero mockup window ---------- */
.mock-window {
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}

.mock-window .mock_banner {
    width: 542px;
    height: 359px;
}

/* ---------- Trust bar ---------- */
.trustbar {
    background: #f5f7ff;
    padding: 22px 0;
}

.trustbar .container {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 16px;
}

.trust-item {
    text-align: center;
    font-size: 13px;
    color: var(--text-gray);
}

.trust-item b {
    display: block;
    font-size: 22px;
    color: var(--primary-dark);
    margin-bottom: 4px;
}

/* ---------- Section common ---------- */
section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    font-size: 30px;
    font-weight: 800;
    margin-bottom: 12px;
}

.section-sub {
    text-align: center;
    color: var(--text-gray);
    font-size: 15px;
    margin-bottom: 52px;
}

/* ---------- Feature tabs ---------- */
.tabs {
    display: flex;
    justify-content: center;
    gap: 14px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.tab {
    padding: 10px 24px;
    border-radius: 20px;
    border: 1px solid #e2e5f5;
    font-size: 14px;
    color: var(--text-gray);
    cursor: default;
}

.tab.active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.feature-card {
    border: 1px solid #eef0fa;
    border-radius: 16px;
    padding: 28px 20px;
    text-align: center;
    transition:
        box-shadow 0.2s ease,
        transform 0.2s ease;
}

.feature-card:hover {
    box-shadow: 0 16px 30px rgba(61, 92, 255, 0.12);
    transform: translateY(-4px);
}

.feature-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    margin: 0 auto 16px;
    background: linear-gradient(135deg, var(--primary), #7c3aed);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 24px;
    font-weight: 700;
}

.feature-card h4 {
    font-size: 16px;
    margin-bottom: 8px;
}

.feature-card p {
    font-size: 13px;
    color: var(--text-gray);
    line-height: 1.7;
}

/* ---------- Office bundle ---------- */
.office-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: #eaf7ee;
    color: #1f9d55;
    font-size: 13px;
    font-weight: 600;
    padding: 6px 14px;
    border-radius: 20px;
    margin-bottom: 16px;
}

.tips-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 40px;
}

.tip-card {
    background: #fff;
    border: 1px solid #eef0fa;
    border-radius: 14px;
    padding: 22px 18px;
}

.tip-card .tip-num {
    font-size: 13px;
    color: var(--primary);
    font-weight: 700;
    margin-bottom: 8px;
}

.tip-card h5 {
    font-size: 15px;
    margin-bottom: 8px;
}

.tip-card p {
    font-size: 13px;
    color: var(--text-gray);
    line-height: 1.7;
}

/* ---------- Plugin / tool market ---------- */
.plugin-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}

.plugin-card {
    border: 1px solid #eef0fa;
    border-radius: 16px;
    padding: 22px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    transition:
        box-shadow 0.2s ease,
        transform 0.2s ease;
}

.plugin-card:hover {
    box-shadow: 0 16px 30px rgba(61, 92, 255, 0.12);
    transform: translateY(-4px);
}

.plugin-top {
    display: flex;
    align-items: center;
    gap: 12px;
}

.plugin-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    flex-shrink: 0;
    background: linear-gradient(135deg, var(--primary), #7c3aed);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 20px;
}

.plugin-name {
    font-size: 15px;
    font-weight: 700;
}

.plugin-tag {
    font-size: 11px;
    color: var(--primary);
    background: #eef1ff;
    padding: 2px 8px;
    border-radius: 8px;
    display: inline-block;
    margin-top: 2px;
}

.plugin-desc {
    font-size: 13px;
    color: var(--text-gray);
    line-height: 1.7;
    flex: 1;
}

.plugin-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.plugin-stars {
    color: #ffb020;
    font-size: 12px;
}

.plugin-btn {
    padding: 7px 18px;
    border-radius: 16px;
    background: var(--primary);
    color: #fff;
    font-size: 12px;
    font-weight: 600;
}

/* ---------- FAQ ---------- */
.faq-list {
    max-width: 760px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid #eef0fa;
    padding: 20px 4px;
}

.faq-q {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 15px;
    font-weight: 600;
    cursor: default;
}

.faq-arr {
    color: var(--primary);
    font-size: 14px;
}

.faq-a {
    font-size: 13px;
    color: var(--text-gray);
    line-height: 1.8;
    margin-top: 10px;
}

/* ---------- AI agent mockup ---------- */
.agent-mock {
    flex: 1;
    min-width: 280px;
    height: 300px;
    border-radius: 20px;
    overflow: hidden;
    display: flex;
    background: #f4f6ff;
    box-shadow: 0 20px 40px rgba(61, 92, 255, 0.15);
}

.agent-mock .agent_banner {
    width: 546px;
    height: 300px;
    border-radius: 20px;
}

/* ---------- Floating bottom CTA ---------- */
body {
    padding-bottom: 84px;
}

.floating-cta {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 200;
    background: #fff;
    box-shadow: 0 -8px 24px rgba(0, 0, 0, 0.1);
    padding: 24px;
}

.floating-cta-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}

.floating-cta-text {
    display: flex;
    align-items: center;
    gap: 10px;
}

.floating-cta .btn-primary-lg {
    padding: 12px 30px;
    font-size: 14px;
}

/* ---------- Split feature (image+text) ---------- */
.split {
    display: flex;
    align-items: center;
    gap: 60px;
}

.split.reverse {
    flex-direction: row-reverse;
}

.split-media {
    flex: 1;
    min-width: 280px;
    height: 300px;
    border-radius: 20px;
    overflow: hidden;
    background: linear-gradient(135deg, #eaf0ff, #dce4ff);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-dark);
    font-size: 16px;
    font-weight: 600;
}

.split-media .media_banner {
    width: 547px;
    height: 300px;
    border-radius: 20px;
}

.split-text {
    flex: 1;
    min-width: 280px;
}

.split-text h3 {
    font-size: 26px;
    font-weight: 800;
    margin-bottom: 16px;
}

.split-text p {
    color: var(--text-gray);
    font-size: 15px;
    line-height: 1.9;
    margin-bottom: 26px;
}

.btn-outline {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 24px;
    border: 2px solid var(--primary);
    color: var(--primary);
    font-weight: 600;
    font-size: 14px;
}

/* ---------- Process ---------- */
.process-bg {
    background: #f7f8fd;
}

.steps {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 8px;
    flex-wrap: wrap;
}

.step {
    flex: 1;
    min-width: 120px;
    text-align: center;
    position: relative;
}

.step-circle {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    margin: 0 auto 16px;
    background: #fff;
    border: 2px solid var(--primary);
    color: var(--primary-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 20px;
}

.step p {
    font-size: 14px;
    font-weight: 600;
}

.step-arrow {
    position: absolute;
    top: 28px;
    right: -30px;
    font-size: 20px;
    color: #c6cdf5;
}

.step:last-child .step-arrow {
    display: none;
}

/* ---------- CTA banner ---------- */
.cta-banner {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    color: #fff;
    text-align: center;
    padding: 70px 0;
}

.cta-banner h3 {
    font-size: 28px;
    font-weight: 800;
    margin-bottom: 14px;
}

.cta-banner p {
    opacity: 0.85;
    margin-bottom: 30px;
    font-size: 15px;
}

/* ---------- Footer ---------- */
footer {
    background: #12163a;
    color: rgba(255, 255, 255, 0.6);
    padding: 40px 0;
    font-size: 13px;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 14px;
}

.footer-links a {
    margin-left: 18px;
    color: rgba(255, 255, 255, 0.6);
}

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

@media (max-width: 900px) {
    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .split,
    .split.reverse {
        flex-direction: column;
    }

    .step-arrow {
        display: none;
    }
}

@media (max-width: 560px) {
    .hero-title {
        font-size: 28px;
    }

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