/* ===== 0067 动感运动风 ===== */
:root {
    --orange-400: #fb923c;
    --orange-500: #f97316;
    --orange-600: #ea580c;
    --orange-700: #c2410c;
    --slate-700: #334155;
    --slate-800: #1e293b;
    --slate-900: #0f172a;
    --white: #ffffff;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    scroll-behavior: smooth;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif; color: var(--gray-800); background: #f8fafc; overflow-x: hidden; }

/* Navbar */
.navbar {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    background: rgba(15,23,42,0.95); backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255,255,255,0.08);
    padding: 0;
}
.nav-container {
    max-width: 1280px; margin: 0 auto; padding: 0 24px;
    display: flex; align-items: center; justify-content: space-between;
    height: 72px;
}
.nav-logo {
    display: flex; align-items: center; gap: 10px;
    font-size: 1.6rem; font-weight: 900; color: #fff; text-decoration: none;
    letter-spacing: -0.5px;
}
.nav-logo span { color: var(--orange-500); }
.nav-links { display: flex; gap: 0; align-items: center; }
.nav-links a {
    color: rgba(255,255,255,0.85); text-decoration: none;
    font-weight: 600; font-size: 0.9rem; padding: 24px 18px;
    position: relative; transition: color 0.3s; letter-spacing: 0.5px;
}
.nav-links a::after {
    content: ''; position: absolute; bottom: 0; left: 18px; right: 18px;
    height: 3px; background: linear-gradient(90deg, var(--orange-400), var(--orange-600));
    transform: scaleX(0); transition: transform 0.3s ease;
    border-radius: 3px 3px 0 0;
}
.nav-links a:hover { color: var(--orange-400); }
.nav-links a:hover::after { transform: scaleX(1); }
.nav-cta {
    background: linear-gradient(135deg, var(--orange-500), var(--orange-600));
    color: #fff !important; padding: 10px 22px !important;
    border-radius: 8px; font-weight: 700 !important;
    margin-left: 12px; box-shadow: 0 4px 16px rgba(249,115,22,0.3);
}
.nav-cta::after { display: none !important; }
.nav-cta:hover { box-shadow: 0 6px 24px rgba(249,115,22,0.45); transform: translateY(-1px); }

/* Mobile */
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; background: none; border: none; padding: 8px; }
.hamburger span { display: block; width: 26px; height: 2.5px; background: #fff; border-radius: 3px; transition: 0.3s; }
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }
.mobile-menu {
    display: none; position: fixed; top: 72px; left: 0; right: 0; bottom: 0;
    background: var(--slate-900); z-index: 999; flex-direction: column; align-items: center;
    justify-content: flex-start; gap: 0; padding-top: 20px;
}
.mobile-menu.active { display: flex; }
.mobile-menu a { color: #fff; font-size: 1.1rem; font-weight: 600; text-decoration: none; padding: 16px 0; width: 100%; text-align: center; border-bottom: 1px solid rgba(255,255,255,0.05); }

/* Hero */
.hero {
    position: relative; min-height: 100vh; overflow: hidden;
    background: var(--slate-900); display: flex; align-items: center;
}
.hero-bg-animate {
    position: absolute; inset: 0;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 30%, #c2410c 60%, #f97316 85%, #0f172a 100%);
    background-size: 400% 400%; animation: gradientFlow 12s ease infinite;
    opacity: 0.6;
}
@keyframes gradientFlow {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}
.hero-particles {
    position: absolute; inset: 0;
    background: radial-gradient(circle at 20% 50%, rgba(249,115,22,0.15) 0%, transparent 50%),
                radial-gradient(circle at 80% 30%, rgba(234,88,12,0.1) 0%, transparent 50%);
}
.hero .container {
    position: relative; display: flex; align-items: center; gap: 60px;
    max-width: 1280px; margin: 0 auto; padding: 120px 24px 80px;
}
.hero-left { flex: 1; }
.hero-left h1 {
    font-size: clamp(2.4rem, 5.5vw, 4rem); font-weight: 900; color: #fff;
    line-height: 1.1; margin-bottom: 20px; letter-spacing: -1px;
}
.hero-left h1 .orange { color: var(--orange-500); }
.typewriter-wrap {
    font-size: 1.2rem; color: rgba(255,255,255,0.75); margin-bottom: 32px;
    font-weight: 500; min-height: 2em;
}
.typewriter-wrap .cursor {
    display: inline-block; width: 2px; height: 1.2em;
    background: var(--orange-500); margin-left: 4px;
    vertical-align: text-bottom; animation: blink 0.8s infinite;
}
@keyframes blink { 0%,100% { opacity: 1; } 50% { opacity: 0; } }
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; }
.btn-primary {
    background: linear-gradient(135deg, var(--orange-500), var(--orange-600));
    color: #fff; padding: 15px 36px; border-radius: 8px;
    font-weight: 700; font-size: 1.05rem; text-decoration: none;
    box-shadow: 0 8px 30px rgba(249,115,22,0.35);
    transition: all 0.3s; display: inline-block;
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 40px rgba(249,115,22,0.5); }
.btn-outline {
    border: 2px solid rgba(255,255,255,0.5); color: #fff;
    padding: 15px 36px; border-radius: 8px; font-weight: 700;
    font-size: 1.05rem; text-decoration: none; transition: all 0.3s;
}
.btn-outline:hover { border-color: #fff; background: rgba(255,255,255,0.08); transform: translateY(-3px); }

/* 3D Rotating card */
.hero-right { flex-shrink: 0; perspective: 800px; }
.hero-card-3d {
    width: 260px; height: 360px; position: relative;
    transform-style: preserve-3d;
    animation: rotate3d 8s ease-in-out infinite;
    cursor: default;
}
@keyframes rotate3d {
    0%,100% { transform: rotateY(-8deg) rotateX(4deg); }
    50% { transform: rotateY(8deg) rotateX(-4deg); }
}
.hero-card-3d .card-face {
    position: absolute; inset: 0; border-radius: 20px;
    background: linear-gradient(145deg, #1e293b, #334155);
    border: 2px solid rgba(249,115,22,0.35);
    padding: 32px; display: flex; flex-direction: column;
    justify-content: center; align-items: center;
    box-shadow: 0 30px 60px rgba(0,0,0,0.5), inset 0 0 0 1px rgba(255,255,255,0.05);
}
.hero-card-3d .card-face .big-icon {
    font-size: 4rem; color: var(--orange-500); margin-bottom: 20px;
    filter: drop-shadow(0 4px 12px rgba(249,115,22,0.4));
}
.hero-card-3d .card-face h3 { color: #fff; font-size: 1.3rem; margin-bottom: 8px; }
.hero-card-3d .card-face p { color: rgba(255,255,255,0.6); font-size: 0.85rem; text-align: center; line-height: 1.6; }

/* Sections */
section { padding: 100px 24px; }
.section-header { text-align: center; margin-bottom: 64px; }
.section-tag {
    display: inline-block; color: var(--orange-500); font-weight: 800;
    font-size: 0.85rem; letter-spacing: 3px; text-transform: uppercase;
    margin-bottom: 16px; position: relative;
}
.section-tag::before, .section-tag::after {
    content: ''; display: inline-block; width: 30px; height: 2px;
    background: var(--orange-400); vertical-align: middle; margin: 0 10px;
}
.section-header h2 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); font-weight: 800; color: var(--slate-900); margin-bottom: 12px; }
.section-header p { color: var(--gray-600); font-size: 1.05rem; }

.container { max-width: 1280px; margin: 0 auto; }

/* Features - staggered heights */
#features { background: #fff; }
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; align-items: start; }
.feature-card {
    background: #fff; border-radius: 16px; padding: 32px 24px;
    text-align: center; box-shadow: 0 4px 24px rgba(0,0,0,0.05);
    border: 1px solid var(--gray-200); transition: all 0.4s ease;
    position: relative;
}
.feature-card:nth-child(1) { padding-top: 48px; padding-bottom: 48px; }
.feature-card:nth-child(2) { padding-top: 56px; padding-bottom: 56px; margin-top: -12px; }
.feature-card:nth-child(3) { padding-top: 40px; padding-bottom: 40px; margin-top: 8px; }
.feature-card:nth-child(4) { padding-top: 44px; padding-bottom: 44px; }
.feature-card:nth-child(5) { padding-top: 56px; padding-bottom: 56px; margin-top: -12px; }
.feature-card:nth-child(6) { padding-top: 48px; padding-bottom: 48px; margin-top: 4px; }
.feature-card:hover { transform: translateY(-10px); box-shadow: 0 20px 48px rgba(249,115,22,0.12); border-color: var(--orange-300); }
.feature-emoji { font-size: 3rem; margin-bottom: 16px; display: block; line-height: 1; }
.feature-card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 10px; color: var(--slate-900); }
.feature-card p { color: var(--gray-600); font-size: 0.9rem; line-height: 1.7; }

/* Stats - infographic style */
#stats {
    background: linear-gradient(180deg, var(--slate-900), var(--slate-800));
    position: relative;
}
#stats .section-header h2 { color: #fff; }
#stats .section-header p { color: rgba(255,255,255,0.6); }
.stats-row {
    display: flex; align-items: center; justify-content: center; gap: 0;
    flex-wrap: wrap; max-width: 900px; margin: 0 auto;
}
.stat-item { text-align: center; padding: 24px 48px; position: relative; }
.stat-item:not(:last-child)::after {
    content: ''; position: absolute; right: 0; top: 20%; height: 60%;
    width: 1px; background: rgba(255,255,255,0.15);
}
.stat-icon { font-size: 2.2rem; margin-bottom: 10px; display: block; }
.stat-number { font-size: 3rem; font-weight: 900; color: var(--orange-400); margin-bottom: 4px; }
.stat-label { color: rgba(255,255,255,0.65); font-size: 0.95rem; font-weight: 500; }

/* Testimonials - carousel */
#testimonials { background: #f8fafc; overflow: hidden; }
.carousel-wrap { position: relative; max-width: 800px; margin: 0 auto; }
.carousel-track { display: flex; transition: transform 0.5s ease; }
.testimonial-card {
    min-width: 100%; padding: 0 12px;
}
.testimonial-card .card-inner {
    background: #fff; border-radius: 20px; padding: 36px 32px;
    box-shadow: 0 4px 24px rgba(0,0,0,0.06); text-align: center;
}
.stars { color: var(--orange-500); margin-bottom: 16px; font-size: 1.1rem; }
.stars i { margin: 0 2px; }
.testimonial-card .card-inner blockquote {
    font-size: 1.05rem; color: var(--gray-700); line-height: 1.8;
    margin-bottom: 20px; font-style: italic;
}
.testimonial-card .card-inner .author { font-weight: 700; color: var(--slate-900); font-size: 1rem; }
.testimonial-card .card-inner .role { font-size: 0.82rem; color: var(--gray-600); }
.carousel-btn {
    position: absolute; top: 50%; transform: translateY(-50%);
    width: 48px; height: 48px; border-radius: 50%;
    background: #fff; border: 1px solid var(--gray-200);
    box-shadow: 0 4px 16px rgba(0,0,0,0.08); cursor: pointer;
    font-size: 1.1rem; color: var(--slate-800); transition: all 0.3s;
    z-index: 10; display: flex; align-items: center; justify-content: center;
}
.carousel-btn:hover { background: var(--orange-500); color: #fff; border-color: var(--orange-500); }
.carousel-prev { left: -24px; }
.carousel-next { right: -24px; }

/* FAQ - sidebar TOC */
#faq { background: #fff; }
.faq-layout { display: grid; grid-template-columns: 240px 1fr; gap: 40px; max-width: 1000px; margin: 0 auto; }
.faq-toc { }
.faq-toc h4 { font-size: 1rem; font-weight: 700; margin-bottom: 16px; color: var(--slate-900); }
.faq-toc a {
    display: block; padding: 10px 14px; color: var(--gray-600);
    text-decoration: none; font-size: 0.9rem; border-radius: 8px;
    transition: all 0.2s; border-left: 3px solid transparent;
    margin-bottom: 4px;
}
.faq-toc a:hover, .faq-toc a.active {
    background: #fff7ed; color: var(--orange-600);
    border-left-color: var(--orange-500); font-weight: 600;
}
.faq-content { }
.faq-item {
    background: var(--gray-100); border-radius: 12px; margin-bottom: 10px; overflow: hidden;
}
.faq-item summary {
    padding: 18px 20px; font-weight: 700; cursor: pointer; list-style: none;
    display: flex; justify-content: space-between; align-items: center;
    color: var(--slate-800); font-size: 1rem; transition: 0.3s;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { background: #fff7ed; }
.faq-arrow { transition: transform 0.3s; color: var(--orange-500); font-size: 0.75rem; }
.faq-item details[open] .faq-arrow { transform: rotate(180deg); }
.faq-item .faq-answer { padding: 0 20px 18px; color: var(--gray-600); line-height: 1.8; font-size: 0.93rem; }

/* CTA */
#cta {
    background: linear-gradient(135deg, var(--orange-600), var(--orange-700));
    text-align: center; position: relative; overflow: hidden;
}
#cta::before {
    content: ''; position: absolute; inset: 0;
    background: repeating-linear-gradient(45deg, transparent, transparent 10px, rgba(255,255,255,0.03) 10px, rgba(255,255,255,0.03) 20px);
}
.cta-content { position: relative; max-width: 650px; margin: 0 auto; }
#cta h2 { font-size: 2.2rem; font-weight: 900; color: #fff; margin-bottom: 12px; }
#cta p { color: rgba(255,255,255,0.85); margin-bottom: 32px; font-size: 1.05rem; line-height: 1.7; }
.btn-white {
    background: #fff; color: var(--orange-700); padding: 16px 44px;
    border-radius: 8px; font-weight: 700; font-size: 1.1rem;
    text-decoration: none; display: inline-block;
    box-shadow: 0 8px 32px rgba(0,0,0,0.2); transition: all 0.3s;
}
.btn-white:hover { transform: translateY(-3px); box-shadow: 0 12px 40px rgba(0,0,0,0.3); }

/* Footer */
footer { background: var(--slate-900); color: rgba(255,255,255,0.7); padding: 60px 24px 30px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; max-width: 1280px; margin: 0 auto 40px; }
.footer-col h4 { color: #fff; font-size: 1.1rem; font-weight: 700; margin-bottom: 20px; }
.footer-logo-text { font-size: 1.5rem; font-weight: 900; color: #fff; margin-bottom: 12px; display: block; }
.footer-logo-text span { color: var(--orange-500); }
.footer-col p { font-size: 0.9rem; line-height: 1.7; }
.footer-col a { display: block; color: rgba(255,255,255,0.6); text-decoration: none; font-size: 0.9rem; margin-bottom: 10px; transition: color 0.3s; }
.footer-col a:hover { color: var(--orange-400); }
.footer-bottom { text-align: center; padding-top: 24px; border-top: 1px solid rgba(255,255,255,0.08); font-size: 0.85rem; max-width: 1280px; margin: 0 auto; }

/* Responsive */
@media (max-width: 1024px) {
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .feature-card:nth-child(n) { padding: 32px 24px !important; margin-top: 0 !important; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .hero .container { gap: 40px; }
    .carousel-prev { left: 0; }
    .carousel-next { right: 0; }
}
@media (max-width: 768px) {
    .nav-links { display: none; }
    .hamburger { display: flex; }
    .hero .container { flex-direction: column; text-align: center; padding-top: 100px; }
    .hero-right { display: none; }
    .hero-btns { justify-content: center; }
    .features-grid { grid-template-columns: 1fr; }
    .stats-row { gap: 20px; }
    .stat-item::after { display: none; }
    .stat-item { padding: 16px 24px; }
    .faq-layout { grid-template-columns: 1fr; }
    .faq-toc { display: none; }
    .footer-grid { grid-template-columns: 1fr; }
    section { padding: 64px 16px; }
}