/* ============================
   变量与基础
   ============================ */
:root {
    --primary: #2563EB;
    --primary-dark: #1D4ED8;
    --primary-light: #3B82F6;
    --primary-pale: #EFF6FF;
    --accent: #06B6D4;
    --bg-light: #F0F9FF;
    --bg-white: #FFFFFF;
    --text-primary: #0F172A;
    --text-secondary: #475569;
    --text-muted: #94A3B8;
    --border: #E2E8F0;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 40px rgba(37,99,235,0.12);
    --shadow-xl: 0 20px 60px rgba(37,99,235,0.15);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 32px;
    --transition: 0.25s ease;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    font-weight: 400;
    color: var(--text-primary);
    line-height: 1.7;
    background: var(--bg-white);
    overflow-x: hidden;
}

a { text-decoration: none; color: inherit; transition: var(--transition); }
ul { list-style: none; }

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

/* ============================
   导航栏
   ============================ */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 0;
    transition: var(--transition);
    background: transparent;
}

.site-header.scrolled {
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 var(--border), var(--shadow-sm);
}

.site-header .navbar {
    padding: 0;
    display: flex;
    align-items: center;
}

.site-header .navbar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.2rem;
    font-weight: 700;
    color: #fff !important;
    letter-spacing: -0.3px;
    transition: var(--transition);
}

.site-header.scrolled .navbar-brand {
    color: var(--text-primary) !important;
}

.site-header .navbar-brand img {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    box-shadow: var(--shadow-sm);
}

.navbar-nav {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-left: auto;
}

.navbar-nav .nav-item {}

.navbar-nav .nav-link {
    padding: 8px 16px !important;
    font-size: 15px;
    font-weight: 500;
    color: rgba(255,255,255,0.85) !important;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.navbar-nav .nav-link:hover {
    color: #fff !important;
    background: rgba(255,255,255,0.1);
}

.navbar-nav .nav-link.active {
    color: #fff !important;
}

.site-header.scrolled .navbar-nav .nav-link {
    color: var(--text-secondary) !important;
}

.site-header.scrolled .navbar-nav .nav-link:hover {
    color: var(--primary) !important;
    background: var(--primary-pale);
}

.nav-cta { margin-left: 8px; }

.btn-primary-nav {
    background: #fff;
    color: var(--primary) !important;
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-primary-nav:hover {
    background: var(--primary-pale);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.site-header.scrolled .btn-primary-nav {
    background: var(--primary);
    color: #fff !important;
}

.site-header.scrolled .btn-primary-nav:hover {
    background: var(--primary-dark);
}

/* 汉堡菜单 */
.navbar-toggler {
    border: none;
    background: none;
    padding: 8px;
    cursor: pointer;
    display: none;
    margin-left: auto;
}

.toggler-icon {
    display: flex;
    flex-direction: column;
    gap: 5px;
    width: 22px;
}

.toggler-icon span {
    display: block;
    height: 2px;
    background: #fff;
    border-radius: 2px;
    transition: var(--transition);
}

.site-header.scrolled .toggler-icon span {
    background: var(--text-primary);
}

.navbar-collapse { margin-left: auto; }

/* ============================
   Hero 区域
   ============================ */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #1E40AF 0%, #2563EB 40%, #3B82F6 70%, #06B6D4 100%);
    overflow: hidden;
    padding-top: 80px;
}

.hero-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.hero-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.25;
    animation: orbFloat 8s ease-in-out infinite;
}

.hero-orb-1 {
    width: 600px; height: 600px;
    background: #60A5FA;
    top: -200px; right: -100px;
    animation-delay: 0s;
}

.hero-orb-2 {
    width: 400px; height: 400px;
    background: #38BDF8;
    bottom: -150px; left: -100px;
    animation-delay: -3s;
}

.hero-orb-3 {
    width: 300px; height: 300px;
    background: #22D3EE;
    top: 40%; left: 50%;
    animation-delay: -5s;
}

@keyframes orbFloat {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -20px) scale(1.05); }
    66% { transform: translate(-20px, 15px) scale(0.95); }
}

.hero-row {
    position: relative;
    z-index: 1;
    padding: 60px 0;
}

.hero-content {
    color: #fff;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255,255,255,0.15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 24px;
    letter-spacing: 0.5px;
}

.badge-dot {
    width: 6px; height: 6px;
    background: #34D399;
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(1.3); }
}

.hero-title {
    font-size: clamp(2.2rem, 5vw, 3.5rem);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -1px;
    margin-bottom: 24px;
    text-shadow: 0 2px 20px rgba(0,0,0,0.15);
}

.text-gradient {
    background: linear-gradient(90deg, #93C5FD, #67E8F9);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 1.1rem;
    line-height: 1.8;
    color: rgba(255,255,255,0.85);
    margin-bottom: 40px;
    max-width: 540px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 48px;
}

.btn-primary-hero {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: #fff;
    color: var(--primary) !important;
    padding: 14px 32px;
    border-radius: 50px;
    font-size: 15px;
    font-weight: 700;
    box-shadow: 0 4px 20px rgba(0,0,0,0.2);
    transition: var(--transition);
}

.btn-primary-hero:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.3);
}

.btn-outline-hero {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255,255,255,0.12);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.3);
    color: #fff !important;
    padding: 14px 32px;
    border-radius: 50px;
    font-size: 15px;
    font-weight: 600;
    transition: var(--transition);
}

.btn-outline-hero:hover {
    background: rgba(255,255,255,0.2);
    border-color: rgba(255,255,255,0.5);
    transform: translateY(-2px);
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 32px;
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.stat-num {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: #fff;
}

.stat-label {
    font-size: 12px;
    color: rgba(255,255,255,0.65);
    font-weight: 500;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: rgba(255,255,255,0.25);
}

/* Hero 可视化卡片 */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    height: 480px;
}

.hero-card-stack {
    position: relative;
    width: 400px;
    height: 400px;
}

.hcard {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(255,255,255,0.15);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,0.2);
    padding: 14px 20px;
    border-radius: var(--radius-md);
    color: #fff;
    font-weight: 600;
    font-size: 14px;
    transition: var(--transition);
    white-space: nowrap;
    animation: float 6s ease-in-out infinite;
}

.hcard:hover {
    background: rgba(255,255,255,0.25);
    transform: scale(1.05) !important;
}

.hcard-icon {
    font-size: 22px;
}

.hcard-1 { top: 0; left: 50%; transform: translateX(-50%); animation-delay: 0s; }
.hcard-2 { top: 22%; right: 0; animation-delay: -1s; }
.hcard-3 { top: 50%; right: -20px; transform: translateY(-50%); animation-delay: -2s; }
.hcard-4 { bottom: 22%; right: 0; animation-delay: -3s; }
.hcard-5 { bottom: 0; left: 50%; transform: translateX(-50%); animation-delay: -4s; }

@keyframes float {
    0%, 100% { transform: translateY(0) translateX(-50%); }
    50% { transform: translateY(-10px) translateX(-50%); }
}
.hcard-2, .hcard-4 { animation-name: floatRight; }
@keyframes floatRight {
    0%, 100% { transform: translateY(-50%); }
    50% { transform: translateY(calc(-50% - 10px)); }
}

.hcard-center {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: 120px; height: 120px;
}

.hcard-center-inner {
    width: 100%; height: 100%;
    background: rgba(255,255,255,0.25);
    backdrop-filter: blur(20px);
    border: 2px solid rgba(255,255,255,0.35);
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    color: #fff;
    font-size: 12px;
    font-weight: 700;
    animation: pulseRing 3s ease-in-out infinite;
}

.hcard-center-inner i {
    font-size: 28px;
}

@keyframes pulseRing {
    0%, 100% { box-shadow: 0 0 0 0 rgba(255,255,255,0.3); }
    50% { box-shadow: 0 0 0 20px rgba(255,255,255,0); }
}

/* ============================
   平台支持
   ============================ */
.platform-section {
    background: var(--bg-white);
    padding: 40px 0;
    border-bottom: 1px solid var(--border);
}

.platform-header {
    text-align: center;
    margin-bottom: 28px;
}

.platform-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin: 0;
}

.platform-list {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
}

.platform-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--bg-light);
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    transition: var(--transition);
    border: 1px solid transparent;
}

.platform-item:hover {
    background: var(--primary-pale);
    border-color: rgba(37,99,235,0.15);
    color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.platform-item i {
    font-size: 18px;
}

/* ============================
   功能特点
   ============================ */
.features-section {
    padding: 100px 0;
    background: var(--bg-light);
}

.section-header {
    margin-bottom: 64px;
}

.section-tag {
    display: inline-block;
    font-size: 13px;
    font-weight: 700;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 16px;
    padding: 4px 16px;
    background: var(--primary-pale);
    border-radius: 50px;
}

.section-title {
    font-size: clamp(1.8rem, 3.5vw, 2.5rem);
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.5px;
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 520px;
    margin: 0 auto;
}

.feature-row {
    margin: 0 -16px;
}

.feature-row > div {
    padding: 0 16px;
    margin-bottom: 32px;
}

.feature-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    height: 100%;
    border: 1px solid var(--border);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    opacity: 0;
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-icon {
    width: 60px; height: 60px;
    background: var(--primary-pale);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    transition: var(--transition);
}

.feature-icon i {
    font-size: 24px;
    color: var(--primary);
    transition: var(--transition);
}

.feature-card:hover .feature-icon {
    background: var(--primary);
}

.feature-card:hover .feature-icon i {
    color: #fff;
}

.feature-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
    letter-spacing: -0.2px;
}

.feature-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.75;
    margin: 0;
}

/* ============================
   详细介绍
   ============================ */
.detail-section {
    padding: 100px 0;
    background: var(--bg-white);
}

.detail-item {
    margin-bottom: 100px;
}

.detail-item:last-child {
    margin-bottom: 0;
}

.detail-item.reverse .row {
    direction: rtl;
}

.detail-item.reverse .row > * {
    direction: ltr;
}

.detail-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.detail-mockup {
    background: var(--bg-light);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    width: 100%;
    max-width: 500px;
    box-shadow: var(--shadow-lg);
}

.mockup-header {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 14px 16px;
    background: var(--bg-white);
    border-bottom: 1px solid var(--border);
}

.mockup-dot {
    width: 12px; height: 12px;
    border-radius: 50%;
}

.mockup-dot.red { background: #FF5F57; }
.mockup-dot.yellow { background: #FFBD2E; }
.mockup-dot.green { background: #28CA41; }

.mockup-body {
    padding: 28px;
}

.mockup-code {
    background: #1E293B;
    border-radius: var(--radius-sm);
    padding: 20px;
    font-family: 'Courier New', monospace;
    font-size: 15px;
    line-height: 1.6;
    margin-bottom: 16px;
}

.c-key { color: #93C5FD; }
.c-op { color: #94A3B8; }
.c-fn { color: #34D399; }
.c-str { color: #FCD34D; }
.c-punc { color: #94A3B8; }

.mockup-result {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    background: rgba(34,197,94,0.1);
    border: 1px solid rgba(34,197,94,0.2);
    border-radius: var(--radius-sm);
    color: #16A34A;
    font-weight: 600;
    font-size: 14px;
}

.mockup-result i { font-size: 16px; }

/* Dashboard mockup */
.detail-mockup-dash {
    background: var(--bg-white);
}

.dash-card {
    padding: 28px;
}

.dash-card-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.dash-card-title i { color: var(--primary); }

.dash-stat-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
}

.dash-stat-row span { color: var(--text-secondary); }
.dash-stat-row strong { color: var(--text-primary); font-size: 18px; }

.dash-chart {
    display: flex;
    align-items: flex-end;
    gap: 6px;
    height: 60px;
    margin-top: 16px;
}

.dash-bar {
    flex: 1;
    background: var(--primary-pale);
    border-radius: 4px 4px 0 0;
    transition: var(--transition);
}

.dash-bar.active {
    background: linear-gradient(180deg, var(--primary), var(--primary-dark));
}

.detail-content {
    padding: 20px 0;
}

.detail-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    font-weight: 700;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 16px;
}

.detail-content h2 {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.5px;
    margin-bottom: 20px;
    line-height: 1.3;
}

.detail-content > p {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 28px;
}

.detail-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.detail-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 15px;
    color: var(--text-secondary);
}

.detail-list li i {
    color: var(--primary);
    font-size: 14px;
    margin-top: 4px;
    flex-shrink: 0;
}

/* ============================
   CTA 区域
   ============================ */
.cta-section {
    position: relative;
    padding: 100px 0;
    background: linear-gradient(135deg, #1E40AF 0%, #2563EB 50%, #0EA5E9 100%);
    overflow: hidden;
}

.cta-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.cta-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.2;
}

.cta-orb-1 {
    width: 500px; height: 500px;
    background: #60A5FA;
    top: -200px; right: -100px;
}

.cta-orb-2 {
    width: 400px; height: 400px;
    background: #22D3EE;
    bottom: -200px; left: -100px;
}

.cta-title {
    position: relative;
    z-index: 1;
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    color: #fff;
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}

.cta-desc {
    position: relative;
    z-index: 1;
    font-size: 1.1rem;
    color: rgba(255,255,255,0.8);
    margin-bottom: 40px;
}

.cta-actions {
    position: relative;
    z-index: 1;
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.btn-primary-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: #fff;
    color: var(--primary) !important;
    padding: 16px 36px;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 700;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
}

.btn-primary-cta:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.btn-outline-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255,255,255,0.12);
    border: 1px solid rgba(255,255,255,0.3);
    color: #fff !important;
    padding: 16px 36px;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 600;
    transition: var(--transition);
}

.btn-outline-cta:hover {
    background: rgba(255,255,255,0.2);
    transform: translateY(-2px);
}

/* ============================
   页脚
   ============================ */
.site-footer {
    background: #0F172A;
    color: rgba(255,255,255,0.6);
    padding: 64px 0 0;
}

.footer-main {
    display: grid;
    grid-template-columns: 1.5fr repeat(3, 1fr);
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-brand .navbar-brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 1.1rem;
    font-weight: 700;
    color: #fff !important;
    margin-bottom: 16px;
}

.footer-brand .navbar-brand img {
    width: 32px; height: 32px;
    border-radius: 8px;
}

.footer-desc {
    font-size: 14px;
    line-height: 1.8;
    color: rgba(255,255,255,0.5);
}

.footer-links {
    display: contents;
}

.footer-col h4 {
    font-size: 13px;
    font-weight: 700;
    color: rgba(255,255,255,0.9);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 20px;
}

.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-col ul li a,
.footer-col ul li {
    font-size: 14px;
    color: rgba(255,255,255,0.5);
    transition: var(--transition);
}

.footer-col ul li a:hover {
    color: #fff;
}

.footer-bottom {
    padding: 24px 0;
    text-align: center;
    font-size: 13px;
}

.footer-bottom p {
    margin-bottom: 6px;
}

.footer-bottom a {
    color: rgba(255,255,255,0.7);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.footer-bottom a:hover { color: #fff; }
.footer-bottom a img { height: 14px; }

/* ============================
   响应式
   ============================ */
@media (max-width: 991px) {
    .navbar-toggler { display: block; }

    .navbar-collapse {
        position: fixed;
        top: 0; right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--bg-white);
        padding: 80px 24px 24px;
        transition: right 0.3s ease;
        box-shadow: -4px 0 30px rgba(0,0,0,0.15);
    }

    .navbar-collapse.show { right: 0; }

    .navbar-nav {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
    }

    .navbar-nav .nav-link {
        color: var(--text-primary) !important;
        padding: 12px 16px !important;
        width: 100%;
        font-size: 16px;
    }

    .navbar-nav .nav-link:hover {
        background: var(--primary-pale);
        color: var(--primary) !important;
    }

    .nav-cta { margin-left: 0; margin-top: 12px; width: 100%; }
    .btn-primary-nav { width: 100%; text-align: center; justify-content: center; }

    .hero-visual { display: none; }

    .hero-title { font-size: 2rem; }

    .hero-stats { gap: 20px; }

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

    .footer-brand {
        grid-column: 1 / -1;
    }

    .detail-item.reverse .row { direction: ltr; }
}

@media (max-width: 767px) {
    .hero-section {
        min-height: auto;
        padding: 120px 0 60px;
    }

    .hero-row { padding: 20px 0; }

    .hero-actions { flex-direction: column; }
    .hero-actions .btn { text-align: center; justify-content: center; }

    .hero-stats { gap: 16px; }

    .features-section, .detail-section, .cta-section {
        padding: 60px 0;
    }

    .feature-row { margin: 0; }
    .feature-row > div { padding: 0 0 16px; }

    .detail-item { margin-bottom: 60px; }

    .footer-main {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .footer-brand { grid-column: auto; }

    .section-title { font-size: 1.6rem; }
    .detail-content h2 { font-size: 1.5rem; }
}

@media (max-width: 480px) {
    .platform-list { gap: 6px; }
    .platform-item { padding: 8px 14px; font-size: 13px; }
    .platform-item span { display: none; }
}