:root {
  --bg: #ffffff;
  --bg-alt: #f8f9fa;
  --fg: #000000;
  --fg-muted: #666666;
  --card: #ffffff;
  --border: #e5e5e5;
  --primary: #000000;
  --primary-contrast: #ffffff;
  --accent: #ff5722;
  --danger: #dc2626;
  --warning: #f59e0b;
  --success: #10b981;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
  --r-sm: 4px;
  --r-md: 8px;
  --r-lg: 16px;
  --r-xl: 24px;
  --r-full: 9999px;
  --shadow-1: 0 1px 3px rgba(0,0,0,0.1);
  --shadow-2: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-3: 0 8px 30px rgba(0,0,0,0.12);
  --shadow-4: 0 20px 60px rgba(0,0,0,0.15);
  --container: 1200px;
  --header-h: 72px;
  --z-header: 100;
  --z-drawer: 200;
  --z-float: 150;
  --dur-1: 0.2s;
  --dur-2: 0.4s;
  --dur-3: 0.6s;
  --ease-1: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-2: cubic-bezier(0.16, 1, 0.3, 1);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:var(--header-h)}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:0.01ms!important;animation-iteration-count:1!important;transition-duration:0.01ms!important}}
body{font-family:var(--font-sans);font-size:16px;line-height:1.6;color:var(--fg);background:var(--bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden}
body.nav-open{overflow:hidden}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:none;background:none}
ul,ol{list-style:none}
table{border-collapse:collapse;width:100%}

.skip-link{position:absolute;top:-100px;left:50%;transform:translateX(-50%);background:var(--primary);color:var(--primary-contrast);padding:12px 24px;border-radius:var(--r-md);z-index:9999;transition:top var(--dur-1) var(--ease-1)}
.skip-link:focus{top:16px;outline:2px solid var(--accent);outline-offset:2px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.u-ico{display:inline-block;vertical-align:-0.125em;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}

.u-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 24px;font-size:15px;font-weight:600;border-radius:var(--r-md);transition:all var(--dur-1) var(--ease-1);white-space:nowrap;min-height:48px}
.u-btn--primary{background:var(--primary);color:var(--primary-contrast);border:2px solid var(--primary)}
.u-btn--primary:hover{background:transparent;color:var(--primary);transform:translateY(-2px);box-shadow:var(--shadow-2)}
.u-btn--outline{background:transparent;color:var(--primary);border:2px solid var(--primary)}
.u-btn--outline:hover{background:var(--primary);color:var(--primary-contrast);transform:translateY(-2px)}
.u-btn--outline-light{background:transparent;color:#fff;border:2px solid rgba(255,255,255,0.5)}
.u-btn--outline-light:hover{background:#fff;color:#000;border-color:#fff;transform:translateY(-2px)}
.u-btn--lg{padding:16px 32px;font-size:16px;min-height:56px}
.u-btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

/* ========== HEADER ========== */
.site-header{position:fixed;top:0;left:0;right:0;height:var(--header-h);background:rgba(255,255,255,0.95);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--border);z-index:var(--z-header);transition:all var(--dur-2) var(--ease-1)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ========== LOGO - 文字被符号包裹 ========== */
.logo{display:flex;align-items:center}
.logo-wrap{display:inline-flex;align-items:center;position:relative}
.logo-bracket{display:inline-block;width:18px;height:32px;position:relative;flex-shrink:0}
.logo-bracket::before,.logo-bracket::after{content:"";position:absolute;background:currentColor}
.logo-bracket--left::before{top:0;left:0;width:10px;height:3px}
.logo-bracket--left::after{top:0;left:0;width:3px;height:100%}
.logo-bracket--right::before{bottom:0;right:0;width:10px;height:3px}
.logo-bracket--right::after{bottom:0;right:0;width:3px;height:100%}
.logo-text{font-size:18px;font-weight:700;letter-spacing:-0.02em;padding:0 6px;white-space:nowrap}
.footer-logo .logo-wrap{color:#fff}
.footer-logo .logo-text{font-size:16px}

/* ========== NAV ========== */
.main-nav{display:none}
.nav-list{display:flex;align-items:center;gap:8px}
.nav-link{display:block;padding:8px 16px;font-size:14px;font-weight:500;color:var(--fg-muted);border-radius:var(--r-md);transition:all var(--dur-1) var(--ease-1)}
.nav-link:hover,.nav-link.is-active{color:var(--fg);background:var(--bg-alt)}
.header-actions{display:flex;align-items:center;gap:12px}
.header-cta{display:none}
.nav-toggle{display:flex;align-items:center;justify-content:center;width:48px;height:48px;border-radius:var(--r-md);transition:background var(--dur-1) var(--ease-1)}
.nav-toggle:hover{background:var(--bg-alt)}
.hamburger{position:relative;width:24px;height:2px;background:var(--fg);border-radius:2px;transition:all var(--dur-2) var(--ease-2)}
.hamburger::before,.hamburger::after{content:"";position:absolute;left:0;width:24px;height:2px;background:var(--fg);border-radius:2px;transition:all var(--dur-2) var(--ease-2)}
.hamburger::before{top:-8px}
.hamburger::after{top:8px}
body.nav-open .hamburger{background:transparent}
body.nav-open .hamburger::before{top:0;transform:rotate(45deg)}
body.nav-open .hamburger::after{top:0;transform:rotate(-45deg)}
@media(min-width:1024px){.main-nav{display:block}.header-cta{display:inline-flex}.nav-toggle{display:none}}
body.nav-open .main-nav{display:flex;position:fixed;top:var(--header-h);left:0;right:0;bottom:0;background:var(--bg);flex-direction:column;padding:24px;z-index:var(--z-drawer);animation:slideIn var(--dur-2) var(--ease-2)}
body.nav-open .nav-list{flex-direction:column;align-items:stretch;gap:4px}
body.nav-open .nav-link{padding:16px;font-size:18px;text-align:center}
@keyframes slideIn{from{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}

/* ========== HERO - 视频背景 ========== */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;justify-content:center;padding:calc(var(--header-h) + 40px) 0 60px;overflow:hidden}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero-video{position:absolute;top:50%;left:50%;min-width:100%;min-height:100%;width:auto;height:auto;transform:translate(-50%,-50%);object-fit:cover}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(to bottom,rgba(0,0,0,0.5) 0%,rgba(0,0,0,0.4) 50%,rgba(0,0,0,0.6) 100%)}
.hero-content{position:relative;z-index:1;max-width:800px;text-align:center;padding:0 24px;color:#fff}
.hero-badge{display:inline-block;padding:10px 20px;font-size:14px;font-weight:600;letter-spacing:0.1em;color:rgba(255,255,255,0.9);background:rgba(255,255,255,0.1);border:1px solid rgba(255,255,255,0.2);border-radius:var(--r-full);margin-bottom:24px;backdrop-filter:blur(10px);animation:fadeInUp var(--dur-3) var(--ease-2)}
.hero-title{font-size:clamp(40px,10vw,72px);font-weight:800;line-height:1.1;letter-spacing:-0.03em;margin-bottom:24px;animation:fadeInUp var(--dur-3) var(--ease-2) 0.1s both}
.hero-highlight{background:linear-gradient(90deg,#fff 0%,rgba(255,255,255,0.7) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-desc{font-size:18px;color:rgba(255,255,255,0.8);margin-bottom:40px;max-width:600px;margin-left:auto;margin-right:auto;animation:fadeInUp var(--dur-3) var(--ease-2) 0.2s both}
.hero-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:16px;margin-bottom:60px;animation:fadeInUp var(--dur-3) var(--ease-2) 0.3s both}
.hero-stats{display:flex;justify-content:center;gap:60px;animation:fadeInUp var(--dur-3) var(--ease-2) 0.4s both}
.stat-item{text-align:center}
.stat-num{font-size:42px;font-weight:800;letter-spacing:-0.02em}
.stat-suffix{font-size:28px;font-weight:700}
.stat-label{display:block;font-size:14px;color:rgba(255,255,255,0.6);margin-top:4px}
@keyframes fadeInUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}
.scroll-indicator{position:absolute;bottom:40px;left:50%;transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;gap:8px;color:rgba(255,255,255,0.6);animation:bounce 2s infinite;z-index:1}
.scroll-mouse{width:24px;height:40px;border:2px solid currentColor;border-radius:12px;position:relative}
.scroll-mouse::before{content:"";position:absolute;top:8px;left:50%;transform:translateX(-50%);width:4px;height:8px;background:currentColor;border-radius:2px;animation:scrollWheel 2s infinite}
@keyframes bounce{0%,20%,50%,80%,100%{transform:translateX(-50%) translateY(0)}40%{transform:translateX(-50%) translateY(-10px)}60%{transform:translateX(-50%) translateY(-5px)}}
@keyframes scrollWheel{0%{opacity:1;transform:translateX(-50%) translateY(0)}100%{opacity:0;transform:translateX(-50%) translateY(12px)}}
@media(max-width:640px){.hero-stats{gap:30px}.stat-num{font-size:32px}.stat-suffix{font-size:20px}}

/* ========== SECTION HEADER ========== */
.section-header{text-align:center;max-width:700px;margin:0 auto 60px}
.section-header--left{text-align:left;margin:0 0 40px}
.section-header--light{color:var(--primary-contrast)}
.section-header--light .section-desc{color:rgba(255,255,255,0.7)}
.section-tag{display:inline-block;padding:6px 14px;font-size:12px;font-weight:600;letter-spacing:0.1em;text-transform:uppercase;color:var(--fg-muted);background:var(--bg-alt);border-radius:var(--r-full);margin-bottom:16px}
.section-header--light .section-tag{background:rgba(255,255,255,0.1);color:rgba(255,255,255,0.8)}
.section-title{font-size:clamp(28px,5vw,42px);font-weight:800;letter-spacing:-0.02em;margin-bottom:16px}
.section-desc{font-size:17px;color:var(--fg-muted)}

/* ========== PRODUCTS - 修复hover遮挡 ========== */
.products{padding:100px 0;background:var(--bg)}
.product-grid{display:grid;grid-template-columns:1fr;gap:24px;margin-bottom:60px}
@media(min-width:640px){.product-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.product-grid{grid-template-columns:repeat(4,1fr)}}
.product-card{position:relative;background:var(--card);border:1px solid var(--border);border-radius:var(--r-lg);padding:24px;transition:all var(--dur-2) var(--ease-2);overflow:visible}
.product-card:hover{border-color:var(--primary);box-shadow:var(--shadow-3)}
.product-badge{position:absolute;top:16px;right:16px;padding:6px 12px;font-size:11px;font-weight:600;color:var(--primary-contrast);background:var(--primary);border-radius:var(--r-full);z-index:2}
.product-img{aspect-ratio:6/7;display:flex;align-items:center;justify-content:center;margin-bottom:20px;overflow:visible}
.product-img img{max-height:100%;object-fit:contain;transition:transform var(--dur-2) var(--ease-2)}
.product-card:hover .product-img img{transform:translateY(-8px)}
.product-info{position:relative;z-index:1;background:var(--card)}
.product-name{font-size:20px;font-weight:700;margin-bottom:8px}
.product-desc{font-size:14px;color:var(--fg-muted);margin-bottom:16px;line-height:1.5}
.product-features{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px}
.product-features li{padding:4px 10px;font-size:12px;background:var(--bg-alt);border-radius:var(--r-sm)}

/* ========== PRODUCT COMPARE ========== */
.product-compare{background:var(--bg-alt);border-radius:var(--r-lg);padding:32px}
.compare-title{font-size:20px;font-weight:700;margin-bottom:24px;text-align:center}
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
.compare-table{min-width:600px}
.compare-table th,.compare-table td{padding:16px;text-align:left;border-bottom:1px solid var(--border)}
.compare-table th{font-weight:600;background:var(--bg)}
.compare-table th:first-child{border-radius:var(--r-md) 0 0 0}
.compare-table th:last-child{border-radius:0 var(--r-md) 0 0}
.compare-table td{font-size:14px}
.compare-table tbody tr:hover{background:var(--bg)}

/* ========== GUIDE ========== */
.guide{padding:100px 0;background:var(--bg-alt)}
.guide-grid{display:grid;gap:24px;margin-bottom:60px}
@media(min-width:768px){.guide-grid{grid-template-columns:repeat(2,1fr)}}
.guide-card{display:flex;gap:24px;background:var(--card);border-radius:var(--r-lg);padding:32px;transition:all var(--dur-2) var(--ease-2)}
.guide-card:hover{box-shadow:var(--shadow-2);transform:translateY(-4px)}
.guide-num{font-size:48px;font-weight:800;color:var(--bg-alt);-webkit-text-stroke:2px var(--primary);line-height:1;flex-shrink:0}
.guide-title{font-size:20px;font-weight:700;margin-bottom:12px}
.guide-desc{font-size:15px;color:var(--fg-muted);margin-bottom:16px}
.guide-steps{display:flex;flex-direction:column;gap:8px}
.guide-steps li{position:relative;padding-left:20px;font-size:14px;color:var(--fg-muted)}
.guide-steps li::before{content:"";position:absolute;left:0;top:8px;width:6px;height:6px;background:var(--primary);border-radius:50%}
.guide-tips{background:var(--card);border-radius:var(--r-lg);padding:40px}
.tips-title{font-size:20px;font-weight:700;margin-bottom:32px;text-align:center}
.tips-grid{display:grid;gap:24px}
@media(min-width:640px){.tips-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.tips-grid{grid-template-columns:repeat(4,1fr)}}
.tip-item{text-align:center}
.tip-icon{display:inline-flex;align-items:center;justify-content:center;width:56px;height:56px;background:var(--bg-alt);border-radius:var(--r-full);margin-bottom:16px;transition:all var(--dur-2) var(--ease-2)}
.tip-item:hover .tip-icon{background:var(--primary);color:var(--primary-contrast);transform:scale(1.1)}
.tip-item h4{font-size:16px;font-weight:600;margin-bottom:8px}
.tip-item p{font-size:14px;color:var(--fg-muted)}

/* ========== SAFETY ========== */
.safety{padding:100px 0;background:var(--primary);color:var(--primary-contrast)}
.safety-grid{display:grid;gap:40px;margin-bottom:40px}
@media(min-width:1024px){.safety-grid{grid-template-columns:2fr 1fr}}
.safety-card{background:rgba(255,255,255,0.05);border:1px solid rgba(255,255,255,0.1);border-radius:var(--r-lg);padding:24px;transition:all var(--dur-2) var(--ease-2)}
.safety-card:hover{background:rgba(255,255,255,0.08);transform:translateY(-4px)}
.safety-card--featured{padding:40px;margin-bottom:24px}
.safety-icon{margin-bottom:16px;color:var(--accent)}
.safety-card h3{font-size:18px;font-weight:700;margin-bottom:12px}
.safety-card--featured h3{font-size:24px}
.safety-card p{font-size:15px;color:rgba(255,255,255,0.7);line-height:1.6}
.safety-row{display:grid;gap:24px}
@media(min-width:640px){.safety-row{grid-template-columns:repeat(3,1fr)}}
.safety-checklist{background:rgba(255,255,255,0.05);border:1px solid rgba(255,255,255,0.1);border-radius:var(--r-lg);padding:32px}
.safety-checklist h3{font-size:18px;font-weight:700;margin-bottom:24px}
.safety-checklist ul{display:flex;flex-direction:column;gap:16px}
.safety-checklist li{display:flex;align-items:center;gap:12px;font-size:14px;color:rgba(255,255,255,0.8)}
.check-icon{width:20px;height:20px;background:var(--success);border-radius:50%;position:relative;flex-shrink:0}
.check-icon::before{content:"";position:absolute;top:50%;left:50%;transform:translate(-50%,-60%) rotate(-45deg);width:10px;height:5px;border-left:2px solid white;border-bottom:2px solid white}
.safety-warning{display:flex;gap:16px;background:rgba(245,158,11,0.1);border:1px solid rgba(245,158,11,0.3);border-radius:var(--r-lg);padding:24px}
.warning-icon{color:var(--warning);flex-shrink:0}
.warning-content h4{font-size:16px;font-weight:600;margin-bottom:8px;color:var(--warning)}
.warning-content p{font-size:14px;color:rgba(255,255,255,0.8);line-height:1.6}

/* ========== FAQ ========== */
.faq{padding:100px 0;background:var(--bg)}
.faq-grid{display:grid;gap:40px;margin-bottom:40px}
@media(min-width:768px){.faq-grid{grid-template-columns:repeat(2,1fr)}}
.faq-cat-title{font-size:18px;font-weight:700;margin-bottom:20px;padding-bottom:12px;border-bottom:2px solid var(--primary)}
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{background:var(--bg-alt);border-radius:var(--r-md);overflow:hidden;transition:all var(--dur-2) var(--ease-2)}
.faq-item:hover{box-shadow:var(--shadow-1)}
.faq-question{display:flex;align-items:center;justify-content:space-between;width:100%;padding:16px 20px;font-size:15px;font-weight:600;text-align:left;cursor:pointer;list-style:none}
.faq-question::-webkit-details-marker{display:none}
.faq-question::after{content:"+";font-size:20px;font-weight:400;color:var(--fg-muted);transition:transform var(--dur-2) var(--ease-2)}
.faq-item[open] .faq-question::after{transform:rotate(45deg)}
.faq-answer{padding:0 20px 20px}
.faq-answer p{font-size:14px;color:var(--fg-muted);line-height:1.7}
.faq-more{text-align:center}
.faq-more p{font-size:15px;color:var(--fg-muted);margin-bottom:16px}

/* ========== NEWS ========== */
.news{padding:100px 0;background:var(--bg-alt)}
.news-grid{display:grid;gap:24px}
@media(min-width:768px){.news-grid{grid-template-columns:1fr 1fr}.news-card--featured{grid-column:1 / -1;display:grid;grid-template-columns:1.5fr 1fr;gap:40px}}
.news-card{background:var(--card);border-radius:var(--r-lg);overflow:hidden;transition:all var(--dur-2) var(--ease-2)}
.news-card:hover{box-shadow:var(--shadow-2);transform:translateY(-4px)}
.news-img{aspect-ratio:16/9;overflow:hidden}
.news-img img{width:100%;height:100%;object-fit:cover;transition:transform var(--dur-3) var(--ease-2)}
.news-card:hover .news-img img{transform:scale(1.05)}
.news-card--featured .news-img{aspect-ratio:auto;height:100%;border-radius:var(--r-lg)}
.news-content{padding:24px}
.news-card--featured .news-content{display:flex;flex-direction:column;justify-content:center;padding:0}
.news-tag{display:inline-block;padding:4px 10px;font-size:11px;font-weight:600;background:var(--bg-alt);border-radius:var(--r-sm);margin-bottom:12px}
.news-title{font-size:18px;font-weight:700;margin-bottom:12px}
.news-card--featured .news-title{font-size:24px}
.news-desc{font-size:14px;color:var(--fg-muted);margin-bottom:16px;line-height:1.6}
.news-link{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--primary);transition:gap var(--dur-1) var(--ease-1)}
.news-link:hover{gap:12px}
.news-link::after{content:"→"}

/* ========== ABOUT ========== */
.about{padding:100px 0;background:var(--bg)}
.about-grid{display:grid;gap:60px;align-items:center}
@media(min-width:1024px){.about-grid{grid-template-columns:1fr 1fr}}
.about-text{font-size:16px;color:var(--fg-muted);margin-bottom:20px;line-height:1.7}
.about-features{display:grid;gap:16px;margin-top:32px}
.about-features li{display:flex;align-items:center;gap:12px;font-size:15px;font-weight:500}
.about-features .u-ico{color:var(--success)}
.about-visual{position:relative}
.about-img{border-radius:var(--r-lg);box-shadow:var(--shadow-3)}

/* ========== CONTACT ========== */
.contact{padding:100px 0;background:var(--primary);color:var(--primary-contrast)}
.contact-grid{display:grid;gap:24px;margin-bottom:40px}
@media(min-width:768px){.contact-grid{grid-template-columns:repeat(3,1fr)}}
.contact-card{background:rgba(255,255,255,0.05);border:1px solid rgba(255,255,255,0.1);border-radius:var(--r-lg);padding:32px;text-align:center;transition:all var(--dur-2) var(--ease-2)}
.contact-card:hover{background:rgba(255,255,255,0.08);transform:translateY(-4px)}
.contact-icon{margin-bottom:20px;color:var(--accent)}
.contact-card h3{font-size:18px;font-weight:700;margin-bottom:12px}
.contact-card p{font-size:14px;color:rgba(255,255,255,0.7);margin-bottom:20px;line-height:1.6}
.contact-card .u-btn--outline{border-color:rgba(255,255,255,0.3);color:var(--primary-contrast)}
.contact-card .u-btn--outline:hover{background:var(--primary-contrast);color:var(--primary)}
.contact-info{text-align:center;color:rgba(255,255,255,0.6);font-size:14px}
.contact-info p{margin-bottom:8px}

/* ========== CTA ========== */
.cta{padding:120px 0;background:linear-gradient(135deg,var(--bg-alt) 0%,var(--bg) 100%)}
.cta-content{text-align:center;max-width:600px;margin:0 auto}
.cta-title{font-size:clamp(28px,5vw,40px);font-weight:800;margin-bottom:16px}
.cta-desc{font-size:17px;color:var(--fg-muted);margin-bottom:32px}
.cta-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:16px}

/* ========== FOOTER ========== */
.site-footer{background:var(--primary);color:var(--primary-contrast);padding:60px 0 0}
.footer-main{display:grid;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,0.1)}
@media(min-width:768px){.footer-main{grid-template-columns:1fr 2fr}}
.footer-logo{display:inline-flex;margin-bottom:16px}
.footer-desc{font-size:14px;color:rgba(255,255,255,0.6);max-width:280px}
.footer-nav{display:grid;gap:32px}
@media(min-width:640px){.footer-nav{grid-template-columns:repeat(3,1fr)}}
.footer-col h4{font-size:14px;font-weight:600;margin-bottom:20px;color:rgba(255,255,255,0.9)}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a{font-size:14px;color:rgba(255,255,255,0.6);transition:color var(--dur-1) var(--ease-1)}
.footer-col a:hover{color:var(--primary-contrast)}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:16px;padding:24px 0;font-size:13px;color:rgba(255,255,255,0.5)}

/* ========== FLOAT CHAT ========== */
.float-chat{position:fixed;right:20px;bottom:calc(20px + var(--safe-bottom));z-index:var(--z-float);display:none}
@media(max-width:1023px){.float-chat{display:block}}
.float-btn{display:flex;flex-direction:column;align-items:center;justify-content:center;width:60px;height:60px;background:var(--primary);color:var(--primary-contrast);border-radius:var(--r-full);box-shadow:var(--shadow-3);transition:all var(--dur-2) var(--ease-2);animation:pulse 3s infinite}
.float-btn:hover{transform:scale(1.1)}
.float-text{font-size:10px;font-weight:600;margin-top:2px}
@keyframes pulse{0%,100%{box-shadow:0 8px 30px rgba(0,0,0,0.2),0 0 0 0 rgba(0,0,0,0.3)}50%{box-shadow:0 8px 30px rgba(0,0,0,0.2),0 0 0 15px rgba(0,0,0,0)}}

/* ========== BACK TO TOP ========== */
.backtop{position:fixed;right:20px;bottom:calc(100px + var(--safe-bottom));width:48px;height:48px;background:var(--card);color:var(--fg);border:1px solid var(--border);border-radius:var(--r-full);box-shadow:var(--shadow-2);z-index:var(--z-float);opacity:0;visibility:hidden;transform:translateY(20px);transition:all var(--dur-2) var(--ease-2)}
.backtop.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.backtop:hover{background:var(--primary);color:var(--primary-contrast);border-color:var(--primary)}
@media(min-width:1024px){.backtop{bottom:calc(40px + var(--safe-bottom))}}

/* ========== AOS ANIMATIONS ========== */
[data-aos]{opacity:0;transform:translateY(30px);transition:opacity var(--dur-3) var(--ease-2),transform var(--dur-3) var(--ease-2)}
[data-aos].aos-animate{opacity:1;transform:translateY(0)}
[data-aos="fade-up"]{transform:translateY(30px)}
[data-aos="fade-down"]{transform:translateY(-30px)}
[data-aos="fade-left"]{transform:translateX(30px)}
[data-aos="fade-right"]{transform:translateX(-30px)}
[data-aos="zoom-in"]{transform:scale(0.9)}
[data-aos="fade-up"].aos-animate,[data-aos="fade-down"].aos-animate{transform:translateY(0)}
[data-aos="fade-left"].aos-animate,[data-aos="fade-right"].aos-animate{transform:translateX(0)}
[data-aos="zoom-in"].aos-animate{transform:scale(1)}

/* ========== UTILITIES ========== */
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
::selection{background:var(--primary);color:var(--primary-contrast)}