/* ── SiteLedger Landing Page – SaaS style ── */

:root {
    --primary: #15803d;
    --primary-hover: #166534;
    --bg: #f8fafc;
    --card-bg: #ffffff;
    --text: #1e293b;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-card: 0 4px 12px rgba(0, 0, 0, 0.06);
    --radius: 12px;
    --max-width: 1200px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text);
    background: var(--bg);
}

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

/* ── Navbar ── */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: var(--card-bg);
    box-shadow: var(--shadow);
    transition: box-shadow 0.2s ease;
}

.navbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
    letter-spacing: -0.02em;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 28px;
}

.nav-menu a {
    color: var(--text);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
}

.nav-menu a:hover {
    color: var(--primary);
}

.btn-nav {
    padding: 8px 18px;
    border-radius: 8px;
    background: var(--primary);
    color: #fff !important;
}

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

/* ── Buttons ── */
.btn {
    display: inline-block;
    padding: 12px 24px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 8px;
    transition: background 0.2s ease, transform 0.15s ease;
    cursor: pointer;
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    background: var(--primary-hover);
    border-color: var(--primary-hover);
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border-color: var(--primary);
}

.btn-outline:hover {
    background: rgba(21, 128, 61, 0.08);
    transform: translateY(-1px);
}

.btn-secondary {
    background: transparent;
    color: var(--primary);
    border-color: var(--primary);
}

.btn-secondary:hover {
    background: rgba(21, 128, 61, 0.08);
    transform: translateY(-1px);
}

/* ── Hero ── */
.hero {
    padding: 140px 0 60px;
    text-align: center;
}

.hero-inner {
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
}

.hero-title {
    margin: 0;
    font-size: 56px;
    font-weight: 700;
    letter-spacing: -0.03em;
    color: var(--text);
}

.hero-subtitle {
    color: #15803d;
    font-weight: 600;
    margin-top: 8px;
    margin-bottom: 0;
    font-size: clamp(1.1rem, 2.5vw, 1.35rem);
}

.hero-description {
    margin-top: 18px;
    margin-bottom: 0;
    color: #555;
    font-size: 18px;
    line-height: 1.6;
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
    margin-top: 28px;
}

.hero-product-preview {
    margin-top: 60px;
    display: flex;
    justify-content: center;
    padding: 0 24px;
}

.product-screenshot {
    width: 100%;
    max-width: 1000px;
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

/* ── Section title ── */
.section-title {
    margin: 0 0 40px;
    font-size: clamp(1.75rem, 3vw, 2rem);
    font-weight: 700;
    text-align: center;
    color: var(--text);
}

/* ── Features (cards) ── */
.features {
    padding: 80px 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 24px;
}

/* ── How SiteLedger Works (workflow) ── */
.workflow {
    padding: 100px 20px;
    background: var(--bg);
    text-align: center;
}

.workflow .section-title {
    margin-bottom: 10px;
}

.section-subtitle {
    margin-top: 0;
    margin-bottom: 0;
    color: var(--text-muted);
    font-size: 1.05rem;
}

.workflow-steps {
    margin-top: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
}

.workflow-item {
    background: var(--card-bg);
    padding: 25px;
    border-radius: var(--radius);
    width: 180px;
    box-shadow: var(--shadow-card);
    border: 1px solid var(--border);
    transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.workflow-item:hover {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transform: translateY(-2px);
}

.workflow-item h3 {
    margin: 0 0 8px;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text);
}

.workflow-item p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.5;
}

.workflow-icon {
    font-size: 28px;
    margin-bottom: 10px;
    line-height: 1;
}

.workflow-arrow {
    font-size: 24px;
    color: var(--text-muted);
    flex-shrink: 0;
}

/* ── Why SiteLedger (card grid, same style as Features) ── */
.why {
    padding: 80px 0;
    background: var(--card-bg);
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 24px;
}

.card {
    background: var(--card-bg);
    padding: 28px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-card);
    transition: box-shadow 0.2s ease, transform 0.2s ease;
    border: 1px solid var(--border);
}

.why .card {
    background: var(--bg);
}

.card:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    transform: translateY(-2px);
}

.card-icon {
    font-size: 2rem;
    margin-bottom: 12px;
    line-height: 1;
}

.card-title {
    margin: 0 0 8px;
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text);
}

.card-desc {
    margin: 0;
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.5;
}

/* ── Placeholder sections (Pricing, Docs) ── */
.section-placeholder {
    padding: 60px 0;
}

.placeholder-text {
    text-align: center;
    color: var(--text-muted);
    margin: 0;
}

/* ── CTA ── */
.cta {
    padding: 80px 0;
    text-align: center;
}

.cta-title {
    margin: 0 0 16px;
    font-size: clamp(1.5rem, 3vw, 1.85rem);
    font-weight: 700;
    color: var(--text);
    max-width: 640px;
    margin-left: auto;
    margin-right: auto;
}

.cta-desc {
    margin: 0 0 28px;
    font-size: 1.05rem;
    color: var(--text-muted);
    max-width: 520px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

.btn-cta {
    padding: 14px 32px;
    font-size: 1.05rem;
}

/* ── Footer ── */
.footer {
    padding: 32px 0;
    text-align: center;
    background: var(--card-bg);
    border-top: 1px solid var(--border);
}

.footer-text {
    margin: 0;
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Navbar scroll effect */
.navbar.scrolled {
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
}

/* ── Workflow 移动端 ── */
@media (max-width: 768px) {
    .workflow-steps {
        flex-direction: column;
    }

    .workflow-arrow {
        transform: rotate(90deg);
    }
}

/* ── Features Showcase (SaaS product blocks) ── */
.features-showcase {
    padding: 100px 20px;
    background: #f8fafc;
}

.features-showcase .section-header {
    max-width: 760px;
    margin: 0 auto 60px;
    text-align: center;
}

.features-showcase .section-header .section-title {
    font-size: 40px;
    line-height: 1.2;
    font-weight: 700;
    color: #0f172a;
    margin: 0;
}

.features-showcase .section-header .section-subtitle {
    margin-top: 16px;
    font-size: 18px;
    line-height: 1.7;
    color: #475569;
}

.feature-block {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 48px;
    margin-bottom: 72px;
}

.feature-block:last-child {
    margin-bottom: 0;
}

.feature-block.reverse {
    flex-direction: row-reverse;
}

.feature-content {
    flex: 1;
    max-width: 520px;
}

.feature-label {
    display: inline-block;
    margin-bottom: 14px;
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(21, 128, 61, 0.08);
    color: #15803d;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.feature-content h3 {
    margin: 0 0 16px;
    font-size: 34px;
    line-height: 1.25;
    font-weight: 700;
    color: #0f172a;
}

.feature-content p {
    margin: 0 0 20px;
    font-size: 17px;
    line-height: 1.75;
    color: #475569;
}

.feature-points {
    list-style: none;
    padding: 0;
    margin: 0;
}

.feature-points li {
    position: relative;
    padding-left: 28px;
    margin-bottom: 12px;
    font-size: 16px;
    line-height: 1.7;
    color: #334155;
}

.feature-points li::before {
    content: "✓";
    position: absolute;
    left: 0;
    top: 0;
    color: #15803d;
    font-weight: 700;
}

.feature-visual {
    flex: 1;
    display: flex;
    justify-content: center;
}

.feature-preview-card {
    width: 100%;
    max-width: 560px;
    padding: 18px;
    border-radius: 20px;
    background: linear-gradient(180deg, #ffffff 0%, #f0fdf4 100%);
    border: 1px solid #e2e8f0;
    box-shadow: 0 20px 50px rgba(15, 23, 42, 0.10);
}

.feature-preview-card img {
    display: block;
    width: 100%;
    height: auto;
    border-radius: 14px;
    background: #e2e8f0;
}

@media (max-width: 1024px) {
    .feature-block,
    .feature-block.reverse {
        flex-direction: column;
        gap: 28px;
        margin-bottom: 56px;
    }

    .feature-content,
    .feature-visual {
        max-width: 100%;
        width: 100%;
    }

    .feature-content h3 {
        font-size: 28px;
    }

    .features-showcase .section-header .section-title {
        font-size: 34px;
    }
}

@media (max-width: 768px) {
    .features-showcase {
        padding: 72px 20px;
    }

    .features-showcase .section-header .section-title {
        font-size: 30px;
    }

    .features-showcase .section-header .section-subtitle {
        font-size: 16px;
    }

    .feature-content h3 {
        font-size: 24px;
    }

    .feature-content p,
    .feature-points li {
        font-size: 15px;
    }

    .feature-preview-card {
        padding: 12px;
        border-radius: 16px;
    }
}

/* ── Why SiteLedger (SaaS selling section, check-list style) ── */
.why-siteledger {
    padding: 100px 20px;
    background: white;
}

.why-siteledger .why-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 50px;
}

.why-siteledger .why-header h2 {
    font-size: 36px;
    font-weight: 700;
}

.why-siteledger .why-header p {
    margin-top: 14px;
    color: #64748b;
    line-height: 1.7;
}

.why-siteledger .why-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    max-width: 900px;
    margin: 0 auto;
}

.why-siteledger .why-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    background: #f8fafc;
    padding: 20px;
    border-radius: 12px;
}

.why-siteledger .check {
    color: #15803d;
    font-weight: 700;
    font-size: 20px;
}

.why-siteledger .why-item h4 {
    margin: 0;
    font-size: 18px;
}

.why-siteledger .why-item p {
    margin-top: 6px;
    color: #64748b;
    font-size: 15px;
}

@media (max-width: 768px) {
    .why-siteledger .why-grid {
        grid-template-columns: 1fr;
    }
}

.who-for{
    padding: 100px 20px;
    background: #f8fafc;
}

.who-for-header{
    max-width: 760px;
    margin: 0 auto 52px;
    text-align: center;
}

.who-for-header h2{
    margin: 0;
    font-size: 36px;
    line-height: 1.2;
    font-weight: 700;
    color: #0f172a;
}

.who-for-header p{
    margin-top: 14px;
    font-size: 17px;
    line-height: 1.75;
    color: #64748b;
}

.who-for-grid{
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    max-width: 1180px;
    margin: 0 auto;
}

.who-for-card{
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 16px;
    padding: 28px 22px;
    box-shadow: 0 12px 30px rgba(15, 23, 42, 0.06);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.who-for-card:hover{
    transform: translateY(-4px);
    box-shadow: 0 18px 40px rgba(15, 23, 42, 0.10);
}

.who-for-icon{
    font-size: 28px;
    margin-bottom: 16px;
}

.who-for-card h3{
    margin: 0 0 12px;
    font-size: 20px;
    line-height: 1.3;
    font-weight: 700;
    color: #0f172a;
}

.who-for-card p{
    margin: 0;
    font-size: 15px;
    line-height: 1.75;
    color: #64748b;
}

@media (max-width: 1024px){
    .who-for-grid{
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px){
    .who-for{
        padding: 72px 20px;
    }

    .who-for-header h2{
        font-size: 30px;
    }

    .who-for-header p{
        font-size: 16px;
    }

    .who-for-grid{
        grid-template-columns: 1fr;
    }
}

/* ── Pricing (SaaS pricing cards) ── */
.pricing-section{
    padding: 100px 20px;
    background: #ffffff;
}

.pricing-header{
    max-width: 760px;
    margin: 0 auto 56px;
    text-align: center;
}

.pricing-header h2{
    margin: 0;
    font-size: 36px;
    line-height: 1.2;
    font-weight: 700;
    color: #0f172a;
}

.pricing-header p{
    margin-top: 14px;
    font-size: 17px;
    line-height: 1.75;
    color: #64748b;
}

.pricing-grid{
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    max-width: 1180px;
    margin: 0 auto;
}

.pricing-card{
    position: relative;
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 20px;
    padding: 32px 26px;
    box-shadow: 0 12px 30px rgba(15, 23, 42, 0.05);
}

.pricing-card-featured{
    background: #ffffff;
    border: 1px solid #bbf7d0;
    box-shadow: 0 18px 40px rgba(21, 128, 61, 0.10);
    transform: translateY(-6px);
}

.pricing-badge{
    position: absolute;
    top: 18px;
    right: 18px;
    padding: 6px 10px;
    border-radius: 999px;
    background: #15803d;
    color: #ffffff;
    font-size: 12px;
    font-weight: 700;
}

.pricing-plan{
    margin-bottom: 14px;
    font-size: 14px;
    font-weight: 700;
    color: #15803d;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.pricing-card h3{
    margin: 0 0 16px;
    font-size: 24px;
    line-height: 1.35;
    font-weight: 700;
    color: #0f172a;
}

.pricing-price{
    margin-bottom: 14px;
    font-size: 30px;
    line-height: 1.2;
    font-weight: 700;
    color: #0f172a;
}

.pricing-note{
    margin: 0 0 20px;
    font-size: 15px;
    line-height: 1.75;
    color: #64748b;
}

.pricing-features{
    list-style: none;
    padding: 0;
    margin: 0 0 26px;
}

.pricing-features li{
    position: relative;
    padding-left: 26px;
    margin-bottom: 12px;
    font-size: 15px;
    line-height: 1.7;
    color: #334155;
}

.pricing-features li::before{
    content: "✓";
    position: absolute;
    left: 0;
    top: 0;
    color: #15803d;
    font-weight: 700;
}

.pricing-btn{
    display: inline-block;
    width: 100%;
    text-align: center;
    padding: 14px 18px;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 700;
    transition: all 0.2s ease;
    box-sizing: border-box;
}

.pricing-btn-primary{
    background: #15803d;
    color: #ffffff;
}

.pricing-btn-primary:hover{
    background: #166534;
}

.pricing-btn-secondary{
    background: #ffffff;
    color: #15803d;
    border: 1px solid #cbd5e1;
}

.pricing-btn-secondary:hover{
    border-color: #15803d;
    background: #f0fdf4;
}

@media (max-width: 1024px){
    .pricing-grid{
        grid-template-columns: 1fr;
        max-width: 720px;
    }

    .pricing-card-featured{
        transform: none;
    }
}

@media (max-width: 768px){
    .pricing-section{
        padding: 72px 20px;
    }

    .pricing-header h2{
        font-size: 30px;
    }

    .pricing-header p{
        font-size: 16px;
    }

    .pricing-card{
        padding: 26px 20px;
    }

    .pricing-card h3{
        font-size: 22px;
    }

    .pricing-price{
        font-size: 28px;
    }
}

.demo-section{
    padding: 100px 20px;
    background: #f8fafc;
}

.demo-layout{
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 48px;
}

.demo-content{
    flex: 1;
    max-width: 520px;
}

.demo-label{
    display: inline-block;
    margin-bottom: 14px;
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(21, 128, 61, 0.08);
    color: #15803d;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.demo-content h2{
    margin: 0 0 16px;
    font-size: 36px;
    line-height: 1.2;
    font-weight: 700;
    color: #0f172a;
}

.demo-intro{
    margin: 0 0 24px;
    font-size: 17px;
    line-height: 1.75;
    color: #475569;
}

.demo-points{
    margin-bottom: 28px;
}

.demo-point{
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 14px;
}

.demo-check{
    color: #15803d;
    font-weight: 700;
    font-size: 18px;
    line-height: 1.4;
}

.demo-point p{
    margin: 0;
    font-size: 15px;
    line-height: 1.75;
    color: #334155;
}

.demo-actions{
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}

.demo-btn{
    display: inline-block;
    padding: 14px 20px;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 700;
    transition: all 0.2s ease;
}

.demo-btn-primary{
    background: #15803d;
    color: #ffffff;
}

.demo-btn-primary:hover{
    background: #166534;
}

.demo-btn-secondary{
    background: #ffffff;
    color: #15803d;
    border: 1px solid #cbd5e1;
}

.demo-btn-secondary:hover{
    border-color: #15803d;
    background: #f0fdf4;
}

.demo-visual{
    flex: 1;
    display: flex;
    justify-content: center;
}

.demo-preview-card{
    width: 100%;
    max-width: 620px;
    padding: 18px;
    border-radius: 20px;
    background: linear-gradient(180deg, #ffffff 0%, #f0fdf4 100%);
    border: 1px solid #e2e8f0;
    box-shadow: 0 20px 50px rgba(15, 23, 42, 0.10);
}

.demo-preview-card img{
    display: block;
    width: 100%;
    height: auto;
    border-radius: 14px;
    background: #e2e8f0;
}

@media (max-width: 1024px){
    .demo-layout{
        flex-direction: column;
        gap: 28px;
    }

    .demo-content,
    .demo-visual{
        max-width: 100%;
        width: 100%;
    }

    .demo-content h2{
        font-size: 30px;
    }
}

@media (max-width: 768px){
    .demo-section{
        padding: 72px 20px;
    }

    .demo-content h2{
        font-size: 28px;
    }

    .demo-intro{
        font-size: 16px;
    }

    .demo-preview-card{
        padding: 12px;
        border-radius: 16px;
    }
}

.trust-section{
    padding: 100px 20px;
    background: #ffffff;
}

.trust-header{
    max-width: 780px;
    margin: 0 auto 56px;
    text-align: center;
}

.trust-label{
    display: inline-block;
    margin-bottom: 14px;
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(21, 128, 61, 0.08);
    color: #15803d;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.trust-header h2{
    margin: 0;
    font-size: 36px;
    line-height: 1.2;
    font-weight: 700;
    color: #0f172a;
}

.trust-header p{
    margin-top: 16px;
    font-size: 17px;
    line-height: 1.75;
    color: #64748b;
}

.trust-stats{
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    max-width: 1100px;
    margin: 0 auto 32px;
}

.trust-stat-card{
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 18px;
    padding: 28px 22px;
    text-align: left;
    box-shadow: 0 12px 30px rgba(15, 23, 42, 0.05);
}

.trust-stat-number{
    margin-bottom: 12px;
    font-size: 34px;
    line-height: 1;
    font-weight: 700;
    color: #15803d;
}

.trust-stat-title{
    margin-bottom: 10px;
    font-size: 18px;
    line-height: 1.3;
    font-weight: 700;
    color: #0f172a;
}

.trust-stat-card p{
    margin: 0;
    font-size: 15px;
    line-height: 1.75;
    color: #64748b;
}

.trust-quotes{
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    max-width: 1100px;
    margin: 0 auto;
}

.trust-quote-card{
    background: linear-gradient(180deg, #ffffff 0%, #f0fdf4 100%);
    border: 1px solid #dcfce7;
    border-radius: 18px;
    padding: 26px 22px;
    box-shadow: 0 12px 30px rgba(21, 128, 61, 0.06);
}

.trust-quote-card p{
    margin: 0 0 14px;
    font-size: 16px;
    line-height: 1.8;
    color: #334155;
}

.trust-quote-card span{
    font-size: 13px;
    font-weight: 700;
    color: #15803d;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

@media (max-width: 1024px){
    .trust-stats{
        grid-template-columns: 1fr;
    }

    .trust-quotes{
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px){
    .trust-section{
        padding: 72px 20px;
    }

    .trust-header h2{
        font-size: 30px;
    }

    .trust-header p{
        font-size: 16px;
    }

    .trust-stat-number{
        font-size: 30px;
    }
}

/* ── Docs Preview ── */
.docs-section{
    padding: 100px 20px;
    background: #f8fafc;
}

.docs-header{
    max-width: 760px;
    margin: 0 auto 56px;
    text-align: center;
}

.docs-label{
    display: inline-block;
    margin-bottom: 14px;
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(21, 128, 61, 0.08);
    color: #15803d;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.docs-header h2{
    margin: 0;
    font-size: 36px;
    line-height: 1.2;
    font-weight: 700;
    color: #0f172a;
}

.docs-header p{
    margin-top: 16px;
    font-size: 17px;
    line-height: 1.75;
    color: #64748b;
}

.docs-grid{
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    max-width: 1100px;
    margin: 0 auto;
}

.docs-card{
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 18px;
    padding: 28px 22px;
    box-shadow: 0 12px 30px rgba(15, 23, 42, 0.05);
}

.docs-icon{
    font-size: 28px;
    margin-bottom: 14px;
}

.docs-card h3{
    margin: 0 0 12px;
    font-size: 20px;
    line-height: 1.3;
    font-weight: 700;
    color: #0f172a;
}

.docs-card p{
    margin: 0 0 16px;
    font-size: 15px;
    line-height: 1.75;
    color: #64748b;
}

.docs-link{
    color: #15803d;
    font-weight: 700;
    text-decoration: none;
}

.docs-link:hover{
    text-decoration: underline;
}

/* ── Site Footer (SaaS) ── */
.site-footer{
    background: #0f172a;
    color: #e2e8f0;
}

.footer-inner{
    padding: 72px 20px 48px;
    display: flex;
    justify-content: space-between;
    gap: 48px;
}

.footer-brand{
    max-width: 360px;
}

.footer-brand h3{
    margin: 0 0 14px;
    font-size: 26px;
    color: #ffffff;
}

.footer-brand p{
    margin: 0;
    font-size: 15px;
    line-height: 1.8;
    color: #cbd5e1;
}

.footer-links{
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 36px;
}

.footer-column h4{
    margin: 0 0 14px;
    font-size: 16px;
    color: #ffffff;
}

.footer-column ul{
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-column li{
    margin-bottom: 10px;
}

.footer-column a{
    color: #cbd5e1;
    text-decoration: none;
}

.footer-column a:hover{
    color: #ffffff;
}

.footer-bottom{
    border-top: 1px solid rgba(255,255,255,0.08);
    padding: 18px 20px;
}

.footer-bottom p{
    margin: 0;
    font-size: 14px;
    color: #94a3b8;
    text-align: center;
}

@media (max-width: 1024px){
    .docs-grid{
        grid-template-columns: 1fr;
    }

    .footer-inner{
        flex-direction: column;
    }

    .footer-links{
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px){
    .docs-section{
        padding: 72px 20px;
    }

    .docs-header h2{
        font-size: 30px;
    }

    .docs-header p{
        font-size: 16px;
    }

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

    .footer-inner{
        padding: 56px 20px 36px;
    }
}

/* ── 移动端专项整理：全局收缩与层级统一 ── */
@media (max-width: 768px){
    section{
        scroll-margin-top: 72px;
    }

    .hero,
    .features-showcase,
    .workflow,
    .why-siteledger,
    .who-for,
    .pricing-section,
    .demo-section,
    .trust-section,
    .docs-section,
    .cta-section{
        padding-top: 56px !important;
        padding-bottom: 56px !important;
    }

    .container{
        width: 100%;
        max-width: 100%;
        padding-left: 16px;
        padding-right: 16px;
        box-sizing: border-box;
    }

    .hero-title{
        font-size: 34px !important;
        line-height: 1.15 !important;
    }

    .hero-subtitle{
        font-size: 16px !important;
    }

    .hero-description,
    .section-subtitle,
    .pricing-header p,
    .docs-header p,
    .trust-header p,
    .why-header p,
    .who-for-header p,
    .demo-intro{
        font-size: 15px !important;
        line-height: 1.65 !important;
    }

    .section-title,
    .why-header h2,
    .who-for-header h2,
    .pricing-header h2,
    .docs-header h2,
    .trust-header h2,
    .demo-content h2{
        font-size: 26px !important;
        line-height: 1.2 !important;
    }

    .feature-content h3,
    .pricing-card h3,
    .docs-card h3,
    .who-for-card h3{
        font-size: 20px !important;
        line-height: 1.3 !important;
    }

    .feature-preview-card,
    .demo-preview-card,
    .pricing-card,
    .who-for-card,
    .docs-card,
    .trust-stat-card,
    .trust-quote-card,
    .workflow-item,
    .why-item{
        padding: 18px !important;
        border-radius: 14px !important;
    }

    .feature-block{
        margin-bottom: 36px !important;
        gap: 18px !important;
    }

    .workflow-steps{
        gap: 12px !important;
        margin-top: 28px !important;
    }

    .workflow-item{
        width: 100% !important;
        max-width: 100% !important;
    }

    .who-for-grid,
    .pricing-grid,
    .docs-grid,
    .trust-stats,
    .trust-quotes{
        gap: 16px !important;
    }

    .hero-buttons,
    .demo-actions{
        display: flex !important;
        flex-direction: column !important;
        gap: 12px !important;
        align-items: stretch !important;
    }

    .hero-buttons a,
    .demo-actions a,
    .pricing-btn{
        width: 100% !important;
        text-align: center !important;
        box-sizing: border-box !important;
    }

    .btn-primary,
    .btn-secondary,
    .demo-btn,
    .pricing-btn{
        padding: 13px 16px !important;
        border-radius: 12px !important;
        font-size: 15px !important;
    }

    .hero-product-preview{
        margin-top: 28px !important;
        padding-left: 16px !important;
        padding-right: 16px !important;
    }

    .product-screenshot,
    .feature-preview-card img,
    .demo-preview-card img{
        border-radius: 10px !important;
    }

    .feature-visual,
    .demo-visual{
        width: 100% !important;
    }

    .feature-preview-card,
    .demo-preview-card{
        max-width: 100% !important;
    }

    .footer-inner{
        padding: 40px 16px 24px !important;
        gap: 24px !important;
    }

    .footer-brand h3{
        font-size: 22px !important;
    }

    .footer-brand p,
    .footer-column a,
    .footer-bottom p{
        font-size: 14px !important;
        line-height: 1.6 !important;
    }

    .footer-column h4{
        margin-bottom: 10px !important;
        font-size: 15px !important;
    }

    .footer-column li{
        margin-bottom: 8px !important;
    }

    .footer-bottom{
        padding: 14px 16px !important;
    }
}

@media (max-width: 480px){
    .container{
        padding-left: 14px !important;
        padding-right: 14px !important;
    }

    .hero-title{
        font-size: 30px !important;
    }

    .section-title,
    .why-header h2,
    .who-for-header h2,
    .pricing-header h2,
    .docs-header h2,
    .trust-header h2,
    .demo-content h2{
        font-size: 24px !important;
    }

    .feature-preview-card,
    .demo-preview-card,
    .pricing-card,
    .who-for-card,
    .docs-card,
    .trust-stat-card,
    .trust-quote-card,
    .workflow-item,
    .why-item{
        padding: 16px !important;
    }

    .btn-primary,
    .btn-secondary,
    .demo-btn,
    .pricing-btn{
        font-size: 14px !important;
    }
}

/* ── 移动端 Navbar 汉堡菜单 ── */
.nav-toggle{
    display: none;
    width: 44px;
    height: 44px;
    border: 1px solid #e2e8f0;
    background: #ffffff;
    border-radius: 12px;
    padding: 0;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
}

.nav-toggle span{
    display: block;
    width: 18px;
    height: 2px;
    background: #0f172a;
    border-radius: 999px;
}

@media (max-width: 768px){

    .navbar .container{
        position: relative;
    }

    .nav-toggle{
        display: inline-flex;
    }

    .nav-menu{
        display: none !important;
        position: absolute;
        top: calc(100% + 12px);
        left: 16px;
        right: 16px;
        background: #ffffff;
        border: 1px solid #e2e8f0;
        border-radius: 16px;
        box-shadow: 0 20px 40px rgba(15, 23, 42, 0.12);
        padding: 14px;
        z-index: 1000;
    }

    .nav-menu.is-open{
        display: flex !important;
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
    }

    .nav-menu a{
        display: block;
        width: 100%;
        padding: 12px 10px;
        border-radius: 10px;
    }

    .nav-menu a:hover{
        background: #f8fafc;
    }
}

/* ── workflow 移动端减法 (How SiteLedger Works) ── */
@media (max-width: 768px){

    .workflow{
        padding-top: 48px !important;
        padding-bottom: 48px !important;
    }

    .workflow .section-title{
        margin-bottom: 8px !important;
    }

    .workflow .section-subtitle{
        max-width: 100% !important;
        margin-top: 8px !important;
        margin-bottom: 0 !important;
        font-size: 14px !important;
        line-height: 1.6 !important;
    }

    .workflow-steps{
        margin-top: 24px !important;
        gap: 10px !important;
    }

    .workflow-item{
        width: 100% !important;
        max-width: 100% !important;
        padding: 14px 16px !important;
        border-radius: 12px !important;
        box-shadow: 0 8px 20px rgba(15, 23, 42, 0.05) !important;
    }

    .workflow-icon{
        font-size: 22px !important;
        margin-bottom: 8px !important;
    }

    .workflow-item h3{
        margin: 0 0 6px !important;
        font-size: 18px !important;
        line-height: 1.25 !important;
    }

    .workflow-item p{
        margin: 0 !important;
        font-size: 14px !important;
        line-height: 1.55 !important;
    }

    .workflow-arrow{
        font-size: 18px !important;
        color: #cbd5e1 !important;
        margin: 0 !important;
    }
}

@media (max-width: 480px){

    .workflow{
        padding-top: 42px !important;
        padding-bottom: 42px !important;
    }

    .workflow-steps{
        margin-top: 20px !important;
        gap: 8px !important;
    }

    .workflow-item{
        padding: 12px 14px !important;
        border-radius: 10px !important;
    }

    .workflow-icon{
        font-size: 20px !important;
        margin-bottom: 6px !important;
    }

    .workflow-item h3{
        font-size: 17px !important;
    }

    .workflow-item p{
        font-size: 13px !important;
        line-height: 1.5 !important;
    }

    .workflow-arrow{
        font-size: 16px !important;
    }
}

/* ── Features Showcase 手机端减法 (≤768px) ── */
@media (max-width: 768px){

    .features-showcase{
        padding-top: 48px !important;
        padding-bottom: 48px !important;
    }

    .features-showcase .section-header{
        margin-bottom: 28px !important;
    }

    .features-showcase .section-title{
        margin-bottom: 8px !important;
    }

    .features-showcase .section-subtitle{
        font-size: 14px !important;
        line-height: 1.6 !important;
        margin-top: 8px !important;
    }

    .feature-block,
    .feature-block.reverse{
        flex-direction: column !important;
        gap: 14px !important;
        margin-bottom: 30px !important;
        align-items: stretch !important;
    }

    .feature-content{
        max-width: 100% !important;
    }

    .feature-label{
        margin-bottom: 10px !important;
        padding: 6px 10px !important;
        font-size: 12px !important;
    }

    .feature-content h3{
        margin: 0 0 10px !important;
        font-size: 22px !important;
        line-height: 1.28 !important;
    }

    .feature-content p{
        margin: 0 0 14px !important;
        font-size: 14px !important;
        line-height: 1.6 !important;
    }

    .feature-points{
        margin: 0 !important;
    }

    .feature-points li{
        padding-left: 22px !important;
        margin-bottom: 8px !important;
        font-size: 14px !important;
        line-height: 1.55 !important;
    }

    .feature-visual{
        width: 100% !important;
    }

    .feature-preview-card{
        max-width: 100% !important;
        padding: 10px !important;
        border-radius: 14px !important;
    }

    .feature-preview-card img{
        border-radius: 10px !important;
    }
}

/* ── Features Showcase 超小屏进一步减法 (≤480px) ── */
@media (max-width: 480px){

    .features-showcase{
        padding-top: 42px !important;
        padding-bottom: 42px !important;
    }

    .features-showcase .section-header{
        margin-bottom: 22px !important;
    }

    .feature-block,
    .feature-block.reverse{
        gap: 12px !important;
        margin-bottom: 24px !important;
    }

    .feature-label{
        margin-bottom: 8px !important;
        padding: 5px 9px !important;
        font-size: 11px !important;
    }

    .feature-content h3{
        font-size: 20px !important;
        margin-bottom: 8px !important;
    }

    .feature-content p{
        font-size: 13px !important;
        line-height: 1.55 !important;
        margin-bottom: 12px !important;
    }

    .feature-points li{
        font-size: 13px !important;
        line-height: 1.5 !important;
        margin-bottom: 7px !important;
    }

    .feature-preview-card{
        padding: 8px !important;
        border-radius: 12px !important;
    }
}

/* ── Who SiteLedger Is For 手机端减法 (≤768px) ── */
@media (max-width: 768px){

    .who-for{
        padding-top: 48px !important;
        padding-bottom: 48px !important;
    }

    .who-for-header{
        margin-bottom: 28px !important;
    }

    .who-for-header h2{
        margin-bottom: 8px !important;
        font-size: 26px !important;
        line-height: 1.2 !important;
    }

    .who-for-header p{
        font-size: 14px !important;
        line-height: 1.6 !important;
        margin-top: 8px !important;
    }

    .who-for-grid{
        gap: 14px !important;
    }

    .who-for-card{
        padding: 18px !important;
        border-radius: 14px !important;
        box-shadow: 0 8px 20px rgba(15, 23, 42, 0.05) !important;
    }

    .who-for-icon{
        font-size: 22px !important;
        margin-bottom: 10px !important;
    }

    .who-for-card h3{
        margin: 0 0 8px !important;
        font-size: 18px !important;
        line-height: 1.28 !important;
    }

    .who-for-card p{
        font-size: 14px !important;
        line-height: 1.55 !important;
    }
}

/* ── Who SiteLedger Is For 超小屏进一步减法 (≤480px) ── */
@media (max-width: 480px){

    .who-for{
        padding-top: 42px !important;
        padding-bottom: 42px !important;
    }

    .who-for-header{
        margin-bottom: 22px !important;
    }

    .who-for-header h2{
        font-size: 24px !important;
    }

    .who-for-header p{
        font-size: 13px !important;
        line-height: 1.55 !important;
    }

    .who-for-grid{
        gap: 12px !important;
    }

    .who-for-card{
        padding: 16px !important;
        border-radius: 12px !important;
    }

    .who-for-icon{
        font-size: 20px !important;
        margin-bottom: 8px !important;
    }

    .who-for-card h3{
        font-size: 17px !important;
        margin-bottom: 7px !important;
    }

    .who-for-card p{
        font-size: 13px !important;
        line-height: 1.5 !important;
    }
}

/* ── Pricing 手机端减法 (≤768px) ── */
@media (max-width: 768px){

    .pricing-section{
        padding-top: 48px !important;
        padding-bottom: 48px !important;
    }

    .pricing-header{
        margin-bottom: 28px !important;
    }

    .pricing-header h2{
        margin-bottom: 8px !important;
        font-size: 26px !important;
        line-height: 1.2 !important;
    }

    .pricing-header p{
        margin-top: 8px !important;
        font-size: 14px !important;
        line-height: 1.6 !important;
    }

    .pricing-grid{
        gap: 14px !important;
    }

    .pricing-card{
        padding: 20px 18px !important;
        border-radius: 16px !important;
        box-shadow: 0 8px 20px rgba(15, 23, 42, 0.05) !important;
    }

    .pricing-card-featured{
        transform: none !important;
        box-shadow: 0 10px 24px rgba(21, 128, 61, 0.08) !important;
    }

    .pricing-badge{
        top: 14px !important;
        right: 14px !important;
        font-size: 11px !important;
        padding: 5px 8px !important;
    }

    .pricing-plan{
        margin-bottom: 10px !important;
        font-size: 12px !important;
    }

    .pricing-card h3{
        margin: 0 0 10px !important;
        font-size: 20px !important;
        line-height: 1.3 !important;
    }

    .pricing-price{
        margin-bottom: 10px !important;
        font-size: 24px !important;
    }

    .pricing-note{
        margin: 0 0 14px !important;
        font-size: 14px !important;
        line-height: 1.55 !important;
    }

    .pricing-features{
        margin: 0 0 18px !important;
    }

    .pricing-features li{
        padding-left: 22px !important;
        margin-bottom: 8px !important;
        font-size: 14px !important;
        line-height: 1.5 !important;
    }

    .pricing-btn{
        padding: 12px 14px !important;
        border-radius: 12px !important;
        font-size: 14px !important;
    }
}

/* ── Pricing 超小屏进一步减法 (≤480px) ── */
@media (max-width: 480px){

    .pricing-section{
        padding-top: 42px !important;
        padding-bottom: 42px !important;
    }

    .pricing-header{
        margin-bottom: 22px !important;
    }

    .pricing-header h2{
        font-size: 24px !important;
    }

    .pricing-header p{
        font-size: 13px !important;
        line-height: 1.55 !important;
    }

    .pricing-grid{
        gap: 12px !important;
    }

    .pricing-card{
        padding: 18px 16px !important;
        border-radius: 14px !important;
    }

    .pricing-badge{
        top: 12px !important;
        right: 12px !important;
        font-size: 10px !important;
        padding: 4px 7px !important;
    }

    .pricing-plan{
        margin-bottom: 8px !important;
        font-size: 11px !important;
    }

    .pricing-card h3{
        font-size: 18px !important;
        margin-bottom: 8px !important;
    }

    .pricing-price{
        font-size: 22px !important;
        margin-bottom: 8px !important;
    }

    .pricing-note{
        font-size: 13px !important;
        line-height: 1.5 !important;
        margin-bottom: 12px !important;
    }

    .pricing-features{
        margin-bottom: 16px !important;
    }

    .pricing-features li{
        font-size: 13px !important;
        line-height: 1.45 !important;
        margin-bottom: 7px !important;
    }

    .pricing-btn{
        font-size: 13px !important;
        padding: 11px 12px !important;
    }
}

/* ── Trust 手机端减法 (≤768px) ── */
@media (max-width: 768px){

    .trust-section{
        padding-top: 48px !important;
        padding-bottom: 48px !important;
    }

    .trust-header{
        margin-bottom: 28px !important;
    }

    .trust-label{
        margin-bottom: 10px !important;
        padding: 6px 10px !important;
        font-size: 12px !important;
    }

    .trust-header h2{
        margin: 0 0 8px !important;
        font-size: 26px !important;
        line-height: 1.2 !important;
    }

    .trust-header p{
        margin-top: 8px !important;
        font-size: 14px !important;
        line-height: 1.6 !important;
    }

    .trust-stats{
        gap: 14px !important;
        margin-bottom: 16px !important;
    }

    .trust-stat-card{
        padding: 18px !important;
        border-radius: 14px !important;
        box-shadow: 0 8px 20px rgba(15, 23, 42, 0.05) !important;
    }

    .trust-stat-number{
        margin-bottom: 8px !important;
        font-size: 28px !important;
    }

    .trust-stat-title{
        margin-bottom: 8px !important;
        font-size: 17px !important;
        line-height: 1.3 !important;
    }

    .trust-stat-card p{
        font-size: 14px !important;
        line-height: 1.55 !important;
    }

    .trust-quotes{
        gap: 14px !important;
    }

    .trust-quote-card{
        padding: 18px !important;
        border-radius: 14px !important;
        box-shadow: 0 8px 20px rgba(21, 128, 61, 0.05) !important;
    }

    .trust-quote-card p{
        margin: 0 0 10px !important;
        font-size: 14px !important;
        line-height: 1.6 !important;
    }

    .trust-quote-card span{
        font-size: 12px !important;
    }
}

/* ── Trust 超小屏进一步减法 (≤480px) ── */
@media (max-width: 480px){

    .trust-section{
        padding-top: 42px !important;
        padding-bottom: 42px !important;
    }

    .trust-header{
        margin-bottom: 22px !important;
    }

    .trust-label{
        margin-bottom: 8px !important;
        padding: 5px 9px !important;
        font-size: 11px !important;
    }

    .trust-header h2{
        font-size: 24px !important;
        margin-bottom: 7px !important;
    }

    .trust-header p{
        font-size: 13px !important;
        line-height: 1.55 !important;
    }

    .trust-stats{
        gap: 12px !important;
        margin-bottom: 14px !important;
    }

    .trust-stat-card{
        padding: 16px !important;
        border-radius: 12px !important;
    }

    .trust-stat-number{
        font-size: 24px !important;
        margin-bottom: 7px !important;
    }

    .trust-stat-title{
        font-size: 16px !important;
        margin-bottom: 7px !important;
    }

    .trust-stat-card p{
        font-size: 13px !important;
        line-height: 1.5 !important;
    }

    .trust-quotes{
        gap: 12px !important;
    }

    .trust-quote-card{
        padding: 16px !important;
        border-radius: 12px !important;
    }

    .trust-quote-card p{
        font-size: 13px !important;
        line-height: 1.5 !important;
        margin-bottom: 8px !important;
    }

    .trust-quote-card span{
        font-size: 11px !important;
    }
}

/* ── Demo 手机端减法 (≤768px) ── */
@media (max-width: 768px){

    .demo-section{
        padding-top: 48px !important;
        padding-bottom: 48px !important;
    }

    .demo-layout{
        gap: 18px !important;
    }

    .demo-label{
        margin-bottom: 10px !important;
        padding: 6px 10px !important;
        font-size: 12px !important;
    }

    .demo-content h2{
        margin: 0 0 10px !important;
        font-size: 26px !important;
        line-height: 1.2 !important;
    }

    .demo-intro{
        margin: 0 0 16px !important;
        font-size: 14px !important;
        line-height: 1.6 !important;
    }

    .demo-points{
        margin-bottom: 18px !important;
    }

    .demo-point{
        gap: 10px !important;
        margin-bottom: 10px !important;
    }

    .demo-check{
        font-size: 16px !important;
        line-height: 1.4 !important;
    }

    .demo-point p{
        font-size: 14px !important;
        line-height: 1.55 !important;
    }

    .demo-actions{
        gap: 10px !important;
    }

    .demo-btn{
        padding: 12px 14px !important;
        border-radius: 12px !important;
        font-size: 14px !important;
    }

    .demo-preview-card{
        padding: 10px !important;
        border-radius: 14px !important;
        box-shadow: 0 10px 24px rgba(15, 23, 42, 0.06) !important;
    }

    .demo-preview-card img{
        border-radius: 10px !important;
    }
}

/* ── Demo 超小屏进一步减法 (≤480px) ── */
@media (max-width: 480px){

    .demo-section{
        padding-top: 42px !important;
        padding-bottom: 42px !important;
    }

    .demo-layout{
        gap: 14px !important;
    }

    .demo-label{
        margin-bottom: 8px !important;
        padding: 5px 9px !important;
        font-size: 11px !important;
    }

    .demo-content h2{
        font-size: 24px !important;
        margin-bottom: 8px !important;
    }

    .demo-intro{
        font-size: 13px !important;
        line-height: 1.55 !important;
        margin-bottom: 14px !important;
    }

    .demo-points{
        margin-bottom: 16px !important;
    }

    .demo-point{
        gap: 8px !important;
        margin-bottom: 8px !important;
    }

    .demo-check{
        font-size: 15px !important;
    }

    .demo-point p{
        font-size: 13px !important;
        line-height: 1.5 !important;
    }

    .demo-actions{
        gap: 8px !important;
    }

    .demo-btn{
        font-size: 13px !important;
        padding: 11px 12px !important;
    }

    .demo-preview-card{
        padding: 8px !important;
        border-radius: 12px !important;
    }

    .demo-preview-card img{
        border-radius: 8px !important;
    }
}

/* ── Docs 手机端减法 (≤768px) ── */
@media (max-width: 768px){

    .docs-section{
        padding-top: 48px !important;
        padding-bottom: 48px !important;
    }

    .docs-header{
        margin-bottom: 28px !important;
    }

    .docs-label{
        margin-bottom: 10px !important;
        padding: 6px 10px !important;
        font-size: 12px !important;
    }

    .docs-header h2{
        margin: 0 0 8px !important;
        font-size: 26px !important;
        line-height: 1.2 !important;
    }

    .docs-header p{
        margin-top: 8px !important;
        font-size: 14px !important;
        line-height: 1.6 !important;
    }

    .docs-grid{
        gap: 14px !important;
    }

    .docs-card{
        padding: 18px !important;
        border-radius: 14px !important;
        box-shadow: 0 8px 20px rgba(15, 23, 42, 0.05) !important;
    }

    .docs-icon{
        font-size: 22px !important;
        margin-bottom: 10px !important;
    }

    .docs-card h3{
        margin: 0 0 8px !important;
        font-size: 18px !important;
        line-height: 1.28 !important;
    }

    .docs-card p{
        margin: 0 0 12px !important;
        font-size: 14px !important;
        line-height: 1.55 !important;
    }

    .docs-link{
        font-size: 14px !important;
    }
}

/* ── Docs 超小屏进一步减法 (≤480px) ── */
@media (max-width: 480px){

    .docs-section{
        padding-top: 42px !important;
        padding-bottom: 42px !important;
    }

    .docs-header{
        margin-bottom: 22px !important;
    }

    .docs-label{
        margin-bottom: 8px !important;
        padding: 5px 9px !important;
        font-size: 11px !important;
    }

    .docs-header h2{
        font-size: 24px !important;
        margin-bottom: 7px !important;
    }

    .docs-header p{
        font-size: 13px !important;
        line-height: 1.55 !important;
    }

    .docs-grid{
        gap: 12px !important;
    }

    .docs-card{
        padding: 16px !important;
        border-radius: 12px !important;
    }

    .docs-icon{
        font-size: 20px !important;
        margin-bottom: 8px !important;
    }

    .docs-card h3{
        font-size: 17px !important;
        margin-bottom: 7px !important;
    }

    .docs-card p{
        font-size: 13px !important;
        line-height: 1.5 !important;
        margin-bottom: 10px !important;
    }

    .docs-link{
        font-size: 13px !important;
    }
}

/* ── CTA 手机端减法 (≤768px) ── */
@media (max-width: 768px){

    .cta-section,
    .cta{
        padding-top: 48px !important;
        padding-bottom: 48px !important;
    }

    .cta-section .container,
    .cta .container{
        padding-left: 16px !important;
        padding-right: 16px !important;
    }

    .cta-section h2,
    .cta-section .cta-title,
    .cta .cta-title{
        margin: 0 0 10px !important;
        font-size: 26px !important;
        line-height: 1.2 !important;
    }

    .cta-section p,
    .cta-section .cta-desc,
    .cta .cta-desc{
        margin: 0 0 18px !important;
        font-size: 14px !important;
        line-height: 1.6 !important;
    }

    .cta-section .cta-buttons,
    .cta-section .hero-buttons,
    .cta-section .demo-actions,
    .cta .cta-buttons,
    .cta .hero-buttons,
    .cta .demo-actions{
        gap: 10px !important;
    }

    .cta-section .btn-primary,
    .cta-section .btn-secondary,
    .cta-section .demo-btn,
    .cta .btn-primary,
    .cta .btn-secondary,
    .cta .demo-btn,
    .cta .btn-cta{
        width: 100% !important;
        padding: 12px 14px !important;
        border-radius: 12px !important;
        font-size: 14px !important;
        box-sizing: border-box !important;
    }
}

/* ── CTA 超小屏进一步减法 (≤480px) ── */
@media (max-width: 480px){

    .cta-section,
    .cta{
        padding-top: 42px !important;
        padding-bottom: 42px !important;
    }

    .cta-section .container,
    .cta .container{
        padding-left: 14px !important;
        padding-right: 14px !important;
    }

    .cta-section h2,
    .cta-section .cta-title,
    .cta .cta-title{
        margin-bottom: 8px !important;
        font-size: 24px !important;
    }

    .cta-section p,
    .cta-section .cta-desc,
    .cta .cta-desc{
        margin-bottom: 16px !important;
        font-size: 13px !important;
        line-height: 1.55 !important;
    }

    .cta-section .cta-buttons,
    .cta-section .hero-buttons,
    .cta-section .demo-actions,
    .cta .cta-buttons,
    .cta .hero-buttons,
    .cta .demo-actions{
        gap: 8px !important;
    }

    .cta-section .btn-primary,
    .cta-section .btn-secondary,
    .cta-section .demo-btn,
    .cta .btn-primary,
    .cta .btn-secondary,
    .cta .demo-btn,
    .cta .btn-cta{
        font-size: 13px !important;
        padding: 11px 12px !important;
    }
}

/* ── Footer 手机端减法 (≤768px) ── */
@media (max-width: 768px){

    .site-footer{
        margin-top: 0 !important;
    }

    .footer-inner{
        padding: 36px 16px 22px !important;
        gap: 20px !important;
    }

    .footer-brand{
        max-width: 100% !important;
    }

    .footer-brand h3{
        margin: 0 0 10px !important;
        font-size: 22px !important;
        line-height: 1.2 !important;
    }

    .footer-brand p{
        font-size: 14px !important;
        line-height: 1.7 !important;
    }

    .footer-links{
        gap: 18px !important;
    }

    .footer-column h4{
        margin: 0 0 10px !important;
        font-size: 15px !important;
        line-height: 1.3 !important;
    }

    .footer-column ul{
        margin: 0 !important;
        padding: 0 !important;
    }

    .footer-column li{
        margin-bottom: 7px !important;
    }

    .footer-column a{
        font-size: 14px !important;
        line-height: 1.5 !important;
    }

    .footer-bottom{
        padding: 12px 16px !important;
    }

    .footer-bottom p{
        font-size: 13px !important;
        line-height: 1.5 !important;
    }
}

/* ── Footer 超小屏进一步减法 (≤480px) ── */
@media (max-width: 480px){

    .footer-inner{
        padding: 30px 14px 18px !important;
        gap: 16px !important;
    }

    .footer-brand h3{
        margin-bottom: 8px !important;
        font-size: 20px !important;
    }

    .footer-brand p{
        font-size: 13px !important;
        line-height: 1.55 !important;
    }

    .footer-links{
        gap: 14px !important;
    }

    .footer-column h4{
        margin-bottom: 8px !important;
        font-size: 14px !important;
    }

    .footer-column li{
        margin-bottom: 6px !important;
    }

    .footer-column a{
        font-size: 13px !important;
        line-height: 1.45 !important;
    }

    .footer-bottom{
        padding: 10px 14px !important;
    }

    .footer-bottom p{
        font-size: 12px !important;
        line-height: 1.45 !important;
    }
}

/* ── Hero 手机端精修 (≤768px) ── */
@media (max-width: 768px){

    .hero{
        padding-top: 44px !important;
        padding-bottom: 48px !important;
    }

    .hero-inner{
        gap: 0 !important;
    }

    .hero-title{
        margin: 0 0 8px !important;
        font-size: 30px !important;
        line-height: 1.1 !important;
        letter-spacing: -0.02em !important;
    }

    .hero-subtitle{
        margin-top: 0 !important;
        margin-bottom: 8px !important;
        font-size: 15px !important;
        line-height: 1.45 !important;
    }

    .hero-description{
        margin-top: 0 !important;
        margin-bottom: 16px !important;
        font-size: 14px !important;
        line-height: 1.6 !important;
        max-width: 100% !important;
    }

    .hero-buttons{
        gap: 10px !important;
        margin-top: 0 !important;
    }

    .hero-buttons a,
    .hero .btn-primary,
    .hero .btn-secondary{
        width: 100% !important;
        padding: 12px 14px !important;
        border-radius: 12px !important;
        font-size: 14px !important;
        box-sizing: border-box !important;
    }

    .hero-product-preview{
        margin-top: 20px !important;
        padding-left: 16px !important;
        padding-right: 16px !important;
    }

    .product-screenshot{
        max-width: 100% !important;
        border-radius: 12px !important;
        box-shadow: 0 10px 24px rgba(15, 23, 42, 0.08) !important;
    }
}

/* ── Hero 超小屏进一步精修 (≤480px) ── */
@media (max-width: 480px){

    .hero{
        padding-top: 38px !important;
        padding-bottom: 42px !important;
    }

    .hero-title{
        margin-bottom: 7px !important;
        font-size: 28px !important;
        line-height: 1.08 !important;
    }

    .hero-subtitle{
        margin-bottom: 7px !important;
        font-size: 14px !important;
        line-height: 1.4 !important;
    }

    .hero-description{
        margin-bottom: 14px !important;
        font-size: 13px !important;
        line-height: 1.55 !important;
    }

    .hero-buttons{
        gap: 8px !important;
    }

    .hero-buttons a,
    .hero .btn-primary,
    .hero .btn-secondary{
        font-size: 13px !important;
        padding: 11px 12px !important;
    }

    .hero-product-preview{
        margin-top: 16px !important;
        padding-left: 14px !important;
        padding-right: 14px !important;
    }

    .product-screenshot{
        border-radius: 10px !important;
    }
}