/* =========================
   CodaYun Design System
========================= */

:root {

    /* 品牌色 */

    --primary: #4F7DFF;
    --primary-hover: #3E6EF4;

    /* 背景 */

    --bg: #ffffff;
    --bg-secondary: #f7f9fc;
    --bg-card: rgba(255, 255, 255, 0.72);

    /* 字体 */

    --text-primary: #111827;
    --text-secondary: #6b7280;

    /* 边框 */

    --border: rgba(15, 23, 42, 0.08);

    /* 阴影 */

    --shadow-sm:
        0 4px 12px rgba(0, 0, 0, 0.05);

    --shadow-md:
        0 12px 32px rgba(0, 0, 0, 0.08);

    --shadow-lg:
        0 24px 64px rgba(0, 0, 0, 0.12);

    /* 圆角 */

    --radius-sm: 12px;
    --radius-md: 18px;
    --radius-lg: 28px;

    /* 最大宽度 */

    --container: 1440px;

    /* 动画 */

    --transition:
        all .35s ease;

}

[data-theme="dark"] {

    --bg: #0b0f19;

    --bg-secondary: #111827;

    --bg-card: rgba(17, 24, 39, .75);

    --text-primary: #ffffff;

    --text-secondary: #9ca3af;

    --border: rgba(255, 255, 255, .08);

}

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

html {
    scroll-behavior: smooth;
}

body {

    font-family:
        Inter,
        PingFang SC,
        Microsoft YaHei,
        sans-serif;

    background: var(--bg);

    color: var(--text-primary);

    line-height: 1.7;

    overflow-x: hidden;
}

.container {

    width: 100%;

    max-width: var(--container);

    margin: auto;

    padding-left: 40px;

    padding-right: 40px;
}

section {

    padding-top: 120px;

    padding-bottom: 120px;
}


.section-header {

    text-align: center;

    margin-bottom: 72px;
}

.section-header h2 {

    font-size: 52px;

    font-weight: 700;

    letter-spacing: -.03em;

    margin-bottom: 20px;
}

.section-header p {

    font-size: 20px;

    color: var(--text-secondary);

    max-width: 720px;

    margin: auto;
}

.btn-primary {

    display: inline-flex;

    align-items: center;

    justify-content: center;

    height: 56px;

    padding: 0 28px;

    border-radius: 14px;

    background: var(--primary);

    color: white;

    text-decoration: none;

    font-weight: 600;

    transition: var(--transition);
}

.btn-primary:hover {

    background: var(--primary-hover);

    transform: translateY(-2px);
}

.navbar {

    position: fixed;

    top: 20px;

    left: 50%;

    transform: translateX(-50%);

    width: 95%;

    max-width: 1280px;

    z-index: 1000;
}

.navbar .container {

    height: 72px;

    display: flex;

    align-items: center;

    justify-content: space-between;

    padding: 0 32px;
}

.navbar::before {

    content: "";

    position: absolute;

    inset: 0;

    border-radius: 20px;

    background:
        rgba(255, 255, 255, .72);

    backdrop-filter:
        blur(24px);

    box-shadow:
        0 8px 32px rgba(0, 0, 0, .06);
}

.navbar-scrolled::before {

    background:
        rgba(255, 255, 255, .82);

    backdrop-filter:
        blur(32px);

    box-shadow:
        0 12px 40px rgba(0, 0, 0, .08);
}

.logo,
a.logo {

    position: relative;

    z-index: 2;

    display: flex;

    align-items: center;

    gap: 12px;

    font-size: 22px;

    font-weight: 700;

    color: var(--text-primary);
}

a.logo,
.logo a {

    text-decoration: none;

    color: inherit;
}

.logo a {

    display: flex;

    align-items: center;

    gap: 12px;

    font-size: inherit;

    font-weight: inherit;
}

.logo img {

    width: 34px;

    height: 34px;
}

nav {

    position: relative;

    z-index: 2;

    display: flex;

    align-items: center;

    gap: 16px;
}

nav a {

    text-decoration: none;

    color: #374151;

    font-size: 15px;

    font-weight: 600;

    padding: 8px 16px;

    border-radius: 8px;

    transition: all .25s ease;
}

nav a:hover {

    color: var(--primary);

    background: rgba(79, 125, 255, 0.08);
}

nav a.active {

    color: var(--primary);

    background: rgba(79, 125, 255, 0.08);
}

nav a.nav-cta {

    background: var(--primary);

    color: #fff;

    padding: 8px 24px;

    border-radius: 24px;

    margin-left: 8px;

    font-weight: 600;
}

nav a.nav-cta:hover {

    background: var(--primary-hover);

    color: #fff;

    box-shadow: 0 4px 12px rgba(79, 125, 255, 0.3);

    transform: translateY(-1px);
}

.hero {
    position: relative;

    overflow: hidden;

    padding-top: 180px;

    padding-bottom: 120px;
}

.hero-content {

    text-align: center;

    max-width: 1100px;

    margin: auto;
    opacity: 0;
    transform: translateY(40px);
}


.hero-badge {

    display: inline-flex;

    align-items: center;

    height: 40px;

    padding: 0 16px;

    border-radius: 999px;

    background:

        rgba(79, 125, 255, .08);

    color: var(--primary);

    font-size: 14px;

    font-weight: 600;

    margin-bottom: 32px;
}

.hero h1 {

    font-size: 72px;

    line-height: 1.08;

    font-weight: 800;

    letter-spacing: -.05em;

    margin-bottom: 24px;
}

.hero p {

    font-size: 24px;

    line-height: 1.8;

    color: var(--text-secondary);

    max-width: 920px;

    margin: auto;

    margin-bottom: 48px;
}

.hero-actions {

    margin-bottom: 48px;
}

.hero-downloads {

    display: flex;

    flex-wrap: wrap;

    justify-content: center;

    gap: 16px;

    margin-bottom: 0;
}

.hero .hero-teach-hint {

    margin-top: 32px;

    margin-bottom: 0;

    font-size: 13px;

    line-height: 1.5;

    text-align: center;

    color: #94a3b8;
}

.hero-teach-label {

    color: #292fe0;

    font-weight: 400;
}

.hero-teach-link {

    color: #6b7280;

    font-size: 13px;

    font-weight: 500;

    text-decoration: none;

    transition: color 0.25s ease;
}

.hero-teach-link:hover {

    color: var(--primary);
}

.hero-downloads a {
    display: flex;

    align-items: center;

    gap: 10px;

    height: 52px;

    padding: 0 24px;

    border-radius: 14px;

    border: 1px solid var(--border);

    text-decoration: none;

    color: var(--text-primary);

    background: white;

    transition: var(--transition);
}

.hero-downloads a img {

    width: 18px;

    height: 18px;

    object-fit: contain;
}

.hero-downloads a:hover {

    transform: translateY(-3px);

    box-shadow: var(--shadow-md);

    border-color: var(--primary);

    background: var(--primary);

    color: white;
}

.hero-image {

    display: flex;

    justify-content: center;

    opacity: 0;
    transform: translateY(60px) scale(.96);

}


.hero-image img {

    width: 100%;

    max-width: 1280px;

    border-radius: 28px;

    box-shadow: var(--shadow-lg);

    border: 1px solid var(--border);

}

.download-qrcode {

    position: relative;

    display: inline-block;
}

.qrcode-popup {

    position: absolute;

    left: 50%;

    bottom: calc(100% + 16px);

    transform:

        translateX(-50%) translateY(10px);

    width: 180px;

    padding: 16px;

    background: white;

    border-radius: 20px;

    border: 1px solid #e5e7eb;

    box-shadow:
        0 20px 50px rgba(0, 0, 0, .12);

    opacity: 0;

    visibility: hidden;

    transition: all .25s ease;

    z-index: 999;
}

.qrcode-popup img {

    width: 100%;

    display: block;

    border-radius: 12px;
}

.qrcode-popup p {

    margin-top: 12px;

    text-align: center;

    font-size: 13px;

    color: #64748b;
}

.download-qrcode:hover .qrcode-popup {

    opacity: 1;

    visibility: visible;

    transform:

        translateX(-50%) translateY(0);
}

.qrcode-popup::after {

    content: "";

    position: absolute;

    left: 50%;

    bottom: -8px;

    width: 16px;

    height: 16px;

    background: white;

    border-right: 1px solid #e5e7eb;

    border-bottom: 1px solid #e5e7eb;

    transform:

        translateX(-50%) rotate(45deg);
}

.chaos {

    padding: 120px 0;

    background:

        linear-gradient(180deg,
            #ffffff,
            #f8fafc);
}

.section-badge {

    display: inline-flex;

    align-items: center;

    padding: 8px 16px;

    border-radius: 999px;

    background:

        rgba(79, 125, 255, .08);

    color: var(--primary);

    font-size: 14px;

    font-weight: 600;

    margin-bottom: 24px;
}

.chaos-compare {

    display: grid;

    grid-template-columns:

        1fr 120px 1fr;

    gap: 40px;

    align-items: center;

    margin-top: 80px;
}

.chaos-card {

    padding: 48px;

    border-radius: 28px;

    background: white;

    border: 1px solid var(--border);

    box-shadow: var(--shadow-sm);

    transition: .35s ease;
}

.chaos-card:hover {

    transform:

        translateY(-8px);

    box-shadow:

        var(--shadow-lg);
}

.chaos-before {

    background:

        linear-gradient(180deg,
            #ffffff,
            #f5fffd);
}

.chaos-after {

    background:

        linear-gradient(135deg,
            #4f7dff,
            #7098ff);

    color: white;
}

.chaos-title {

    font-size: 28px;

    font-weight: 700;

    margin-bottom: 32px;
}

.chaos-items {

    display: flex;

    flex-direction: column;

    gap: 16px;
}

.chaos-item {

    display: flex;

    justify-content: space-between;

    align-items: center;

    padding: 16px 20px;

    border-radius: 14px;

    background:

        rgba(0, 0, 0, .03);
}

.chaos-item strong {

    color: #ff4d4f;
}

.workspace-mini {

    display: grid;

    grid-template-columns:

        repeat(2, 1fr);

    gap: 16px;

    margin-top: 24px;
}

.workspace-mini div {

    padding: 24px;

    border-radius: 18px;

    background:

        rgba(255, 255, 255, .15);

    backdrop-filter:

        blur(12px);

    text-align: center;

    font-weight: 600;
}


.chaos-footer {

    margin-top: 32px;

    font-size: 16px;

    opacity: .9;
}

.chaos-arrow {

    font-size: 72px;

    font-weight: 700;

    color: var(--primary);

    text-align: center;
}


.value {

    padding: 120px 0;

    background: #ffffff;
}

.value-flow {

    display: grid;

    grid-template-columns:

        1fr 360px 1fr;

    gap: 60px;

    align-items: center;

    margin-top: 80px;
}

.value-left,
.value-right {

    display: flex;

    flex-direction: column;

    gap: 24px;
}

.flow-item {

    padding: 28px;

    border-radius: 20px;

    background: white;

    border: 1px solid var(--border);

    box-shadow: var(--shadow-sm);

    font-size: 18px;

    font-weight: 600;

    transition: .3s ease;
}

.flow-item:hover {

    transform:

        translateX(10px);
}

.flow-center {

    text-align: center;

    padding: 60px 40px;

    border-radius: 32px;

    background:

        linear-gradient(135deg,
            #4f7dff,
            #7098ff);

    color: white;

    box-shadow:

        0 20px 60px rgba(79, 125, 255, .25);
}

.flow-logo {

    font-size: 42px;

    font-weight: 800;

    margin-bottom: 12px;
}

.flow-desc {

    opacity: .9;

    font-size: 18px;
}

.result-item {

    padding: 28px;

    border-radius: 20px;

    background:

        rgba(79, 125, 255, .08);

    color:

        var(--primary);

    font-weight: 700;

    text-align: center;

    font-size: 18px;
}






.workspace {

    background:

        linear-gradient(180deg,
            #f7f9fc,
            #ffffff);
}

.workspace-tabs {

    display: flex;

    justify-content: center;

    gap: 16px;

    margin-bottom: 56px;
}

.workspace-tabs button {

    height: 52px;

    padding: 0 24px;

    border: none;

    cursor: pointer;

    border-radius: 999px;

    background: white;

    border: 1px solid var(--border);

    font-size: 15px;

    transition: var(--transition);
}

.workspace-tabs button.active {

    background: var(--primary);

    color: white;
}

.workspace-tabs button:hover {

    transform:
        translateY(-2px);
}

.workspace-preview {

    display: flex;

    justify-content: center;
    width: 100%;

    max-width: 1400px;

    margin: 0 auto;
}

.browser-frame {

    overflow: hidden;

    border-radius: 28px;

    background: white;

    box-shadow: var(--shadow-lg);

    border: 1px solid var(--border);

    width: 100%;

    max-width: 1320px;
}

.workspace-image-stack {

    position: relative;

    width: 100%;

    line-height: 0;
}

.workspace-image-stack .workspace-image {

    display: block;

    width: 100%;

    border-radius: 0 0 28px 28px;
}

.workspace-image-stack .workspace-image-base {

    position: relative;

    z-index: 1;
}

.workspace-image-stack .workspace-image-overlay {

    position: absolute;

    top: 0;

    left: 0;

    z-index: 2;

    opacity: 0;

    pointer-events: none;
}



.browser-top {

    height: 54px;

    display: flex;

    align-items: center;

    gap: 10px;

    padding-left: 20px;

    border-bottom: 1px solid var(--border);
}

.browser-top span {

    width: 12px;

    height: 12px;

    border-radius: 50%;
}

.browser-top span:nth-child(1) {

    background: #ff5f57;
}

.browser-top span:nth-child(2) {

    background: #febc2e;
}

.browser-top span:nth-child(3) {

    background: #28c840;
}


.capability {

    padding: 56px 0;

    background: #ffffff;
}

.capability-row {

    display: grid;

    grid-template-columns: 1fr 1fr;

    gap: 80px;

    align-items: center;

    margin-top: 120px;
}

.capability-row.reverse {

    direction: rtl;
}

.capability-row.reverse>* {

    direction: ltr;
}

.capability-tag {

    display: inline-flex;

    align-items: center;

    padding: 8px 16px;

    border-radius: 999px;

    background:

        rgba(79, 125, 255, .08);

    color: var(--primary);

    font-size: 14px;

    font-weight: 600;

    margin-bottom: 20px;
}

.capability-content h3 {

    font-size: 32px;

    font-weight: 700;

    line-height: 1.4;

    color: #1f2937;

    margin-bottom: 20px;
}

.capability-content p {

    font-size: 18px;

    line-height: 1.9;

    color: #6b7280;

    max-width: 520px;
}

.capability-image {

    position: relative;
}

.capability-image img {

    width: 100%;

    border-radius: 24px;

    border: 1px solid var(--border);

    box-shadow: var(--shadow-lg);

    transition: .4s ease;
}

.capability-image img:hover {

    transform:

        translateY(-10px);
}

.compare {

    padding: 120px 0;

    background:
        linear-gradient(180deg,
            #f8fafc,
            #ffffff);
}

.compare-grid {

    display: grid;

    grid-template-columns:

        1fr 120px 1fr;

    gap: 40px;

    align-items: center;

    margin-top: 100px;
}

.compare-side {

    padding: 48px;

    border-radius: 32px;

    background: white;

    border: 1px solid var(--border);

    box-shadow: var(--shadow-sm);
}

.compare-side.active {

    background:

        linear-gradient(135deg,
            #4f7dff,
            #7098ff);

    color: white;

    border: none;
}

.compare-label {

    font-size: 14px;

    font-weight: 700;

    letter-spacing: 1px;

    text-transform: uppercase;

    margin-bottom: 24px;

    opacity: .8;
}

.compare-item {

    padding: 24px;

    border-radius: 18px;

    background:

        rgba(0, 0, 0, .03);

    margin-bottom: 16px;
}

.compare-item h3 {

    font-size: 22px;

    margin-bottom: 8px;
}

.compare-item p {

    color: var(--text-secondary);
}

.compare-center {

    text-align: center;

    font-size: 48px;

    font-weight: 800;

    color: var(--primary);
}

.compare-highlight h3 {

    font-size: 42px;

    margin-bottom: 16px;
}

.compare-highlight p {

    font-size: 18px;

    line-height: 1.8;

    opacity: .95;
}

.compare-benefits {

    display: grid;

    grid-template-columns:

        repeat(2, 1fr);

    gap: 16px;

    margin-top: 40px;
}

.compare-benefits div {

    padding: 20px;

    border-radius: 18px;

    background:

        rgba(255, 255, 255, .12);

    backdrop-filter: blur(12px);

    text-align: center;

    font-weight: 600;
}










.fade-up {

    opacity: 0;

    transform:
        translateY(40px);

    transition:
        all .8s ease;
}

.fade-up.show {

    opacity: 1;

    transform:
        translateY(0);
}

.platform {

    padding: 50px 0;

    background: #ffffff;
}

.platform-ecosystem {

    position: relative;

    height: 700px;

    margin-top: 120px;
}

.platform-center {

    position: absolute;

    left: 50%;

    top: 50%;

    transform:

        translate(-50%, -50%);

    width: 320px;

    height: 320px;

    border-radius: 50%;

    background:

        linear-gradient(135deg,
            #4f7dff,
            #7098ff);

    color: white;

    display: flex;

    flex-direction: column;

    justify-content: center;

    align-items: center;

    box-shadow:

        0 30px 80px rgba(79, 125, 255, .25);
}

.platform-logo {

    font-size: 42px;

    font-weight: 800;
}

.platform-desc {

    margin-top: 12px;

    opacity: .9;
}

.platform-item {

    position: absolute;

    padding: 24px 36px;

    border-radius: 20px;

    background: white;

    border: 1px solid var(--border);

    box-shadow: var(--shadow-sm);

    font-weight: 600;

    transition: .3s ease;
}

.platform-item:hover {

    transform:

        translateY(-8px);
}

.asset {

    padding: 130px 0;

    background:

        linear-gradient(180deg,
            #ffffff,
            #f8fafc);
}

.asset-flow {

    display: flex;

    align-items: center;

    justify-content: center;

    margin-top: 100px;

    gap: 30px;
}

.asset-step {

    flex: 1;

    text-align: center;

    max-width: 320px;
}

.asset-icon {

    display: inline-flex;

    align-items: center;

    justify-content: center;

    padding: 10px 24px;

    border-radius: 999px;

    background:

        rgba(79, 125, 255, .08);

    color: var(--primary);

    font-size: 14px;

    font-weight: 700;

    margin-bottom: 24px;
}

.asset-step h3 {

    font-size: 30px;

    margin-bottom: 16px;

    color: #111827;
}

.asset-step p {

    font-size: 17px;

    line-height: 1.8;

    color: #6b7280;
}

.asset-line {

    width: 120px;

    height: 2px;

    background:

        linear-gradient(90deg,
            #4f7dff,
            #93c5fd);
}

.asset-highlight {

    display: grid;

    grid-template-columns:

        repeat(4, 1fr);

    gap: 24px;

    margin-top: 120px;
}

.asset-card {

    background: white;

    border-radius: 24px;

    padding: 40px;

    border: 1px solid var(--border);

    text-align: center;

    box-shadow: var(--shadow-sm);
}

.asset-card span {

    display: block;

    color: #6b7280;

    margin-bottom: 12px;
}

.asset-card strong {

    font-size: 42px;

    font-weight: 800;

    color: var(--primary);
}




.edge {

    top: 0;

    left: 50%;

    transform: translateX(-50%);
}

.firefox {

    left: 170px;

    top: 180px;
}

.browser360 {

    left: 280px;

    bottom: 60px;
}

.web {

    right: 170px;

    top: 180px;
}

.offline {

    right: 280px;

    bottom: 60px;
}

.audience {

    padding: 140px 0;

    background: #ffffff;
}


.audience-grid {

    display: grid;

    grid-template-columns:

        repeat(4, 1fr);

    gap: 32px;

    margin-top: 100px;
}

.audience-card {

    padding: 48px 36px;

    border-radius: 32px;

    background: white;

    border: 1px solid var(--border);

    text-align: center;

    transition: .35s ease;
}

.audience-card:hover {

    transform:

        translateY(-10px);

    box-shadow:

        var(--shadow-lg);
}

.audience-icon {

    font-size: 48px;

    margin-bottom: 24px;
}

.audience-card h3 {

    font-size: 24px;

    margin-bottom: 16px;
}

.audience-card p {

    color: #6b7280;

    line-height: 1.8;
}

.trust {

    padding: 140px 0 20px;

    background:

        linear-gradient(180deg,
            #f8fafc,
            #ffffff);
}

.trust-grid {

    display: grid;

    grid-template-columns:

        repeat(4, 1fr);

    gap: 24px;

    margin-top: 100px;
}

.trust-card {

    padding: 48px 32px;

    background: white;

    border: 1px solid var(--border);

    border-radius: 28px;

    text-align: center;

    transition: .35s ease;
}

.trust-card:hover {

    transform:

        translateY(-8px);

    box-shadow:

        var(--shadow-lg);
}

.trust-card strong {

    display: block;

    font-size: 28px;

    margin-bottom: 16px;

    color: #111827;
}

.trust-card span {

    color: #6b7280;

    line-height: 1.8;
}

.trust-quote {

    margin-top: 120px;

    text-align: center;

    max-width: 950px;

    margin-left: auto;

    margin-right: auto;
}

.trust-quote p {

    font-size: 36px;

    line-height: 1.6;

    font-weight: 700;

    color: #111827;
}

.cta {

    padding: 100px 0;

    background:

        linear-gradient(180deg,
            #ffffff,
            #f8fafc);
}

.cta-card {

    text-align: center;

    padding: 100px 80px;

    border-radius: 40px;

    background:

        linear-gradient(135deg,
            #4f7dff,
            #7098ff);

    color: white;

    position: relative;

    overflow: hidden;
}

.cta-card::before {

    content: "";

    position: absolute;

    width: 500px;

    height: 500px;

    border-radius: 50%;

    background:

        rgba(255, 255, 255, .08);

    top: -250px;

    right: -150px;
}

.cta-card::after {

    content: "";

    position: absolute;

    width: 400px;

    height: 400px;

    border-radius: 50%;

    background:

        rgba(255, 255, 255, .05);

    left: -120px;

    bottom: -220px;
}

.cta .section-badge {

    background:

        rgba(255, 255, 255, .15);

    color: white;

    border: 1px solid rgba(255, 255, 255, .2);
}

.cta h2 {

    margin-top: 24px;

    font-size: 64px;

    font-weight: 800;

    line-height: 1.2;

    max-width: 984px;

    margin-left: auto;

    margin-right: auto;
}

.cta p {

    margin-top: 30px;

    font-size: 20px;

    line-height: 1.9;

    opacity: .92;

    max-width: 760px;

    margin-left: auto;

    margin-right: auto;
}

.cta-buttons {

    display: flex;

    justify-content: center;

    gap: 16px;

    margin-top: 50px;

    flex-wrap: wrap;
}

.cta .btn-primary {

    background: white;

    color: var(--primary);

    padding: 16px 32px;

    border-radius: 999px;

    font-weight: 700;

    text-decoration: none;

    transition: .3s ease;
}

.cta .btn-primary:hover {

    transform: translateY(-3px);
}

.cta .btn-secondary {

    padding: 16px 32px;

    border-radius: 999px;

    border: 1px solid rgba(255, 255, 255, .25);

    color: white;

    text-decoration: none;

    transition: .3s ease;
}

.cta .btn-secondary:hover {

    background:

        rgba(255, 255, 255, .12);
}

.cta-support {

    margin-top: 40px;

    font-size: 15px;

    opacity: .8;
}

.cta-stats {

    display: flex;

    justify-content: center;

    gap: 80px;

    margin-bottom: 50px;

    position: relative;

    z-index: 2;
}

.cta-stats div {

    display: flex;

    flex-direction: column;

    align-items: center;
}

.cta-stats strong {

    font-size: 42px;

    font-weight: 800;

    line-height: 1;

    color: #ffffff;

    margin-bottom: 8px;
}

.cta-stats span {

    font-size: 14px;

    color: rgba(255, 255, 255, .8);

    letter-spacing: .5px;
}

.cta-stats div {

    position: relative;
}

.cta-stats div:not(:last-child)::after {

    content: "";

    position: absolute;

    right: -40px;

    top: 50%;

    transform: translateY(-50%);

    width: 1px;

    height: 40px;

    background: rgba(255, 255, 255, .2);
}

.footer {

    padding: 48px 0 24px;

    background: var(--bg-secondary);

    border-top: 1px solid #eef2f7;
}

.footer-top {

    display: flex;

    justify-content: space-between;

    align-items: center;

    padding-bottom: 32px;

    margin-bottom: 32px;

    border-bottom: 1px solid #f1f5f9;
}

.footer-logo {

    font-weight: 800;

    color: #111827;

    margin-bottom: 8px;
    width: 230px;
}

.footer-brand p {

    font-size: 14px;

    color: #4b5563;
}

.footer-links {

    display: flex;

    gap: 32px;
}

.footer-links a {

    color: #4b5563;

    font-weight: 500;

    text-decoration: none;

    transition: .25s ease;
}

.footer-links a:hover {

    color: var(--primary);
}

.footer-bottom {

    display: flex;

    justify-content: space-between;

    align-items: center;

    font-size: 14px;

    color: #94a3b8;
}

.footer-record {

    display: flex;

    align-items: center;

    gap: 12px;
}

.footer-record a {

    color: #94a3b8;

    text-decoration: none;
}

.footer-record a:hover {

    color: var(--primary);
}

/* 返回顶部 */

.back-to-top {

    position: fixed;

    right: 28px;

    bottom: 28px;

    z-index: 1100;

    width: 48px;

    height: 48px;

    border: none;

    border-radius: 50%;

    background: var(--primary);

    color: #fff;

    font-size: 20px;

    line-height: 1;

    cursor: pointer;

    display: flex;

    align-items: center;

    justify-content: center;

    box-shadow: 0 8px 24px rgba(79, 125, 255, 0.35);

    opacity: 0;

    visibility: hidden;

    pointer-events: none;

    transform: translateY(12px);

    transition: opacity 0.25s ease, visibility 0.25s ease, transform 0.25s ease, background 0.25s ease, box-shadow 0.25s ease;
}

.back-to-top:hover {

    background: var(--primary-hover);

    box-shadow: 0 12px 28px rgba(79, 125, 255, 0.45);
}

.back-to-top.show {

    opacity: 1;

    visibility: visible;

    pointer-events: auto;

    transform: translateY(0);
}




[data-theme="dark"] .navbar::before {

    background:
        rgba(11, 15, 25, .72);
}

[data-theme="dark"] .feature-card,
[data-theme="dark"] .value-card,
[data-theme="dark"] .review-card,
[data-theme="dark"] .problem-card,
[data-theme="dark"] .platform-grid>div,
[data-theme="dark"] .user-grid>div {

    background:
        rgba(17, 24, 39, .75);
}

@media (max-width:1200px) {

    .feature-grid,
    .problem-grid,
    .user-grid {

        grid-template-columns:
            repeat(2, 1fr);
    }

}

@media (max-width:768px) {

    .compare-grid,
    .value-flow,
    .chaos-compare,
    .problem-grid,
    .value-grid,
    .feature-grid,
    .user-grid,
    .platform-grid,
    .review-grid {

        grid-template-columns: 1fr;
    }

    .hero h1 {

        font-size: 42px;
    }

    .section-header h2 {

        font-size: 34px;
    }

    .hero p {

        font-size: 18px;
    }

    .chaos-arrow {

        transform: rotate(90deg);

        font-size: 48px;
    }

    .capability-row {

        grid-template-columns: 1fr;

        gap: 40px;
    }

    .capability-row.reverse {

        direction: ltr;
    }

    .capability-content h3 {

        font-size: 32px;
    }

    .compare-center {

        font-size: 36px;
    }

    .asset-flow {

        flex-direction: column;
    }

    .asset-line {

        width: 2px;

        height: 60px;
    }

    .trust-grid {

        grid-template-columns: 1fr 1fr;
    }

    .asset-highlight {

        grid-template-columns: 1fr 1fr;
    }

    .audience-grid {

        grid-template-columns: 1fr 1fr;
    }

    .platform-ecosystem {

        height: auto;

        display: flex;

        flex-direction: column;

        gap: 24px;

    }

    .platform-center,
    .platform-item {

        position: static;

        transform: none;

        width: 100%;
    }

    .cta-card {

        padding: 60px 30px;
    }

    .cta h2 {

        font-size: 40px;
    }

    .cta p {

        font-size: 17px;
    }

    .cta-buttons {

        flex-direction: column;
    }

    .cta-stats {

        gap: 24px;

        flex-wrap: wrap;

        margin-bottom: 40px;
    }

    .cta-stats strong {

        font-size: 32px;
    }

    .cta-stats div:not(:last-child)::after {

        display: none;
    }

    nav {

        display: none;
    }

    .footer-top {

        flex-direction: column;

        gap: 24px;

        text-align: center;
    }

    .footer-links {

        flex-wrap: wrap;

        justify-content: center;

        gap: 16px;
    }

    .footer-bottom {

        flex-direction: column;

        gap: 12px;

        text-align: center;
    }



    .hero-downloads {

        flex-direction: column;
    }

}


@keyframes floating {

    0% {

        transform:
            translateY(0px);
    }

    50% {

        transform:
            translateY(-12px);
    }

    100% {

        transform:
            translateY(0px);
    }

}

.hero-glow {

    position: absolute;

    width: 800px;

    height: 800px;

    border-radius: 50%;

    background:

        rgba(79, 125, 255, .12);

    filter: blur(120px);

    left: 50%;

    top: -300px;

    transform: translateX(-50%);

    pointer-events: none;
}

/* =========================
   安装教程页
========================= */

.teach-page .teach-hero,
.about-page .teach-hero {

    padding-top: 160px;

    padding-bottom: 48px;

    text-align: center;

    background: var(--bg-secondary);
}

.teach-page .teach-hero h1,
.about-page .teach-hero h1 {

    font-size: 42px;

    font-weight: 700;

    color: var(--text-primary);

    margin-bottom: 12px;
}

.teach-page .teach-hero p,
.about-page .teach-hero p {

    font-size: 16px;

    color: var(--text-secondary);
}

.teach-page .teach-section,
.about-page .teach-section {

    padding-top: 48px;

    padding-bottom: 80px;

    background: var(--bg-secondary);

    min-height: 400px;
}

.about-page .about-content {

    background: #fff;

    border-radius: var(--radius-sm);

    border: 1px solid var(--border);

    box-shadow: var(--shadow-sm);

    padding: 32px 40px;

    color: var(--text-primary);

    font-size: 15px;

    line-height: 1.8;
}

.about-page .about-content p {

    margin-bottom: 14px;
}

.about-page .about-content img {

    max-width: 100%;

    height: auto;
}

.about-page .about-content h2,
.about-page .about-content h3,
.about-page .about-content h4 {

    color: var(--text-primary);

    margin: 1.5em 0 0.75em;
}

.about-page .about-content ul,
.about-page .about-content ol {

    padding-left: 1.5em;

    margin-bottom: 14px;
}

.teach-layout {

    display: flex;

    align-items: flex-start;

    gap: 32px;
}

.teach-sidebar {

    width: 340px;

    min-height: 508px;

    border-radius: var(--radius-sm);

    background: var(--bg-card);

    backdrop-filter: blur(24px);

    border: 1px solid var(--border);

    box-shadow: var(--shadow-sm);

    padding: 20px;

    flex-shrink: 0;
}

.teach-sidebar-nav {

    display: flex;

    flex-direction: column;

    gap: 12px;
}

.teach-sidebar-item {

    display: flex;

    align-items: center;

    justify-content: flex-start;

    padding-left: 15px;

    width: 100%;

    max-width: 300px;

    height: 54px;

    line-height: 20px;

    border-radius: 8px;

    background: rgba(79, 125, 255, 0.06);

    color: var(--text-primary);

    font-size: 14px;

    text-decoration: none;

    transition: background-color 0.2s ease, color 0.2s ease, border 0.2s ease;

    box-sizing: border-box;

    border-left: 4px solid transparent;
}

.teach-sidebar-item img {

    width: 24px;

    height: 24px;

    margin-right: 8px;

    flex-shrink: 0;
}

.teach-sidebar-item span {

    color: var(--text-primary);

    font-size: 16px;

    font-weight: 500;
}

.teach-sidebar-item:hover,
.teach-sidebar-item.active {

    background: rgba(79, 125, 255, 0.12);

    border-left-color: var(--primary);
}

.teach-content {

    flex: 1;

    min-width: 0;

    background: #fff;

    border-radius: var(--radius-sm);

    border: 1px solid var(--border);

    box-shadow: var(--shadow-sm);

    padding: 32px 40px;

    min-height: 508px;

    box-sizing: border-box;
}

.teach-panel {

    display: none;
}

.teach-panel.active {

    display: block;
}

.teach-content-title {

    font-size: 22px;

    color: var(--text-primary);

    margin-bottom: 24px;

    padding-bottom: 16px;

    border-bottom: 1px solid var(--border);
}

.teach-content-body {

    color: var(--text-primary);

    font-size: 15px;

    line-height: 1.8;
}

.teach-content-body p {

    margin-bottom: 14px;
}

.teach-content-body img {

    max-width: 100%;

    height: auto;

}

@media (max-width: 991px) {

    .teach-page .teach-hero h1,
    .about-page .teach-hero h1 {

        font-size: 32px;
    }

    .teach-layout {

        flex-direction: column;

        align-items: stretch;
    }

    .teach-sidebar {

        width: 100%;

        min-height: auto;

        padding: 16px;
    }

    .teach-sidebar-nav {

        flex-direction: row;

        flex-wrap: wrap;

        gap: 10px;

        justify-content: center;
    }

    .teach-sidebar-item {

        max-width: 300px;

        margin: 0 auto;
    }

    .teach-content {

        padding: 24px 20px;

        min-height: auto;
    }

    .teach-content-title {

        font-size: 20px;
    }
}

@media (max-width: 575px) {

    .teach-sidebar-item {

        max-width: none;
    }
}