:root{--primary:#5B4FE9;--primary-light:#8B7CF6;--primary-lighter:#B8A9FF;--primary-soft:#eef0ff;--text:#2d2d3a;--text-secondary:#5c5c72;--text-muted:#8888a0;--bg:#f7f7fb;--bg-white:#ffffff;--bg-card:#ffffff;--border:#ececf5;--border-light:#e0e0ee;--shadow-sm:0 2px 12px rgba(91,79,233,.06);--shadow-md:0 4px 20px rgba(91,79,233,.07);--shadow-lg:0 10px 30px rgba(91,79,233,.14);--shadow-xl:0 20px 50px rgba(91,79,233,.18);--radius-sm:12px;--radius-md:16px;--radius-lg:18px;--radius-pill:26px;--transition-fast:.2s ease;--transition-base:.25s ease;--transition-slow:.35s ease;--font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;--gradient-primary:linear-gradient(135deg,#5B4FE9 0%,#8B7CF6 50%,#B8A9FF 100%);--gradient-card:linear-gradient(135deg,#5B4FE9,#B8A9FF)}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{font-family:var(--font-sans);color:var(--text);background:var(--bg);line-height:1.8;font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden;transition:background .4s ease,color .4s ease}
a{color:var(--primary);text-decoration:none;transition:color var(--transition-fast),opacity var(--transition-fast)}
a:hover{color:var(--primary-light)}
img,svg{max-width:100%;display:block;height:auto}
ul,ol{list-style:none}
button{font-family:inherit;cursor:pointer}
input,textarea,select{font-family:inherit}
::selection{background:var(--primary);color:#fff}
::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--primary-lighter);border-radius:4px}
::-webkit-scrollbar-thumb:hover{background:var(--primary-light)}
.container{max-width:1200px;margin:0 auto;padding:0 20px;width:100%}
header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.95);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--border);box-shadow:0 2px 12px rgba(91,79,233,.06);transition:background .4s ease,border-color .4s ease,box-shadow .3s ease}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;padding:14px 0;flex-wrap:wrap;gap:12px}
.logo{display:flex;align-items:center;gap:10px;font-size:22px;font-weight:800;color:var(--primary);letter-spacing:-.3px;transition:transform var(--transition-fast)}
.logo:hover{transform:scale(1.02);color:var(--primary)}
.logo-mark{width:38px;height:38px;flex-shrink:0;transition:transform .4s cubic-bezier(.34,1.56,.64,1)}
.logo:hover .logo-mark{transform:rotate(-8deg) scale(1.08)}
nav ul{display:flex;list-style:none;gap:22px;flex-wrap:wrap;align-items:center}
nav a{color:var(--text);font-weight:500;font-size:15px;transition:color var(--transition-fast);position:relative;padding-bottom:2px}
nav a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;background:var(--gradient-primary);border-radius:2px;transition:width var(--transition-base)}
nav a:hover{color:var(--primary)}
nav a:hover::after{width:100%}
.search-box{display:flex;align-items:center;border:1px solid var(--border-light);border-radius:22px;padding:6px 6px 6px 14px;background:#fff;transition:border-color var(--transition-fast),box-shadow var(--transition-fast),background .4s ease}
.search-box:focus-within{border-color:var(--primary-light);box-shadow:0 0 0 3px rgba(91,79,233,.12)}
.search-box input{border:none;outline:none;font-size:14px;width:150px;background:transparent;color:var(--text);transition:width var(--transition-base)}
.search-box input:focus{width:190px}
.search-box input::placeholder{color:var(--text-muted)}
.search-box button{border:none;background:var(--primary);color:#fff;border-radius:16px;padding:5px 14px;cursor:pointer;font-size:14px;font-weight:600;transition:background var(--transition-fast),transform var(--transition-fast)}
.search-box button:hover{background:var(--primary-light);transform:scale(1.04)}
.search-box button:active{transform:scale(.97)}
.menu-toggle{display:none;background:none;border:none;font-size:26px;cursor:pointer;color:var(--primary);line-height:1;padding:4px 8px;border-radius:8px;transition:background var(--transition-fast)}
.menu-toggle:hover{background:var(--primary-soft)}
.theme-toggle{background:none;border:1px solid var(--border-light);border-radius:20px;padding:6px 12px;cursor:pointer;font-size:15px;color:var(--primary);line-height:1;transition:border-color var(--transition-fast),background var(--transition-fast),transform var(--transition-fast)}
.theme-toggle:hover{border-color:var(--primary-light);background:var(--primary-soft);transform:rotate(15deg) scale(1.05)}
.hero{background:var(--gradient-primary);color:#fff;padding:70px 0 60px;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;top:-50%;right:-20%;width:600px;height:600px;background:radial-gradient(circle,rgba(255,255,255,.18) 0%,transparent 70%);border-radius:50%;pointer-events:none;animation:heroFloat 12s ease-in-out infinite}
.hero::after{content:"";position:absolute;bottom:-40%;left:-10%;width:500px;height:500px;background:radial-gradient(circle,rgba(184,169,255,.25) 0%,transparent 70%);border-radius:50%;pointer-events:none;animation:heroFloat 15s ease-in-out infinite reverse}
@keyframes heroFloat{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(30px,-20px) scale(1.05)}}
.hero-inner{display:grid;grid-template-columns:1.2fr 1fr;gap:40px;align-items:center;position:relative;z-index:1}
.hero h1{font-size:38px;line-height:1.3;margin-bottom:18px;font-weight:800;letter-spacing:-.5px;text-shadow:0 2px 20px rgba(0,0,0,.12)}
.hero p{font-size:17px;opacity:.95;margin-bottom:26px;line-height:1.9;max-width:560px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-block;padding:12px 28px;border-radius:26px;font-weight:600;font-size:15px;transition:transform .25s cubic-bezier(.34,1.56,.64,1),box-shadow .25s ease,background .25s ease;border:none;text-align:center;cursor:pointer;white-space:nowrap}
.btn-primary{background:#fff;color:var(--primary);box-shadow:0 4px 16px rgba(0,0,0,.12)}
.btn-primary:hover{transform:translateY(-3px) scale(1.02);box-shadow:0 12px 28px rgba(0,0,0,.22);color:var(--primary)}
.btn-primary:active{transform:translateY(-1px) scale(.99)}
.btn-ghost{border:2px solid rgba(255,255,255,.7);color:#fff;background:transparent}
.btn-ghost:hover{background:rgba(255,255,255,.18);transform:translateY(-3px);color:#fff;box-shadow:0 8px 20px rgba(0,0,0,.15)}
.btn-ghost:active{transform:translateY(-1px)}
.carousel{position:relative;background:rgba(255,255,255,.12);border-radius:18px;padding:28px;min-height:230px;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,.2);box-shadow:0 8px 32px rgba(0,0,0,.12);transition:transform var(--transition-base),box-shadow var(--transition-base)}
.carousel:hover{transform:translateY(-4px);box-shadow:0 16px 44px rgba(0,0,0,.18)}
.slide{display:none;animation:fade .6s cubic-bezier(.4,0,.2,1)}
.slide.active{display:block}
@keyframes fade{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}
.slide h3{font-size:20px;margin-bottom:10px;font-weight:700;letter-spacing:-.2px}
.slide p{font-size:15px;opacity:.92;line-height:1.85}
.slide-dots{display:flex;gap:8px;margin-top:20px}
.slide-dots span{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.45);cursor:pointer;transition:background var(--transition-fast),transform var(--transition-fast),width var(--transition-base)}
.slide-dots span:hover{background:rgba(255,255,255,.7);transform:scale(1.2)}
.slide-dots span.active{background:#fff;width:26px;border-radius:5px}
section{padding:60px 0;position:relative}
.section-title{text-align:center;margin-bottom:44px;max-width:720px;margin-left:auto;margin-right:auto}
.section-title h2{font-size:30px;color:var(--text);margin-bottom:12px;font-weight:800;letter-spacing:-.5px;line-height:1.3}
.section-title h2::after{content:"";display:block;width:56px;height:4px;background:var(--gradient-primary);border-radius:2px;margin:16px auto 0}
.section-title p{color:var(--text-muted);font-size:16px;line-height:1.8}
.breadcrumb{font-size:14px;color:var(--text-muted);padding:16px 0}
.breadcrumb a{color:var(--primary);font-weight:500}
.breadcrumb a:hover{text-decoration:underline}
.breadcrumb span{color:var(--text-muted)}
.grid{display:grid;gap:24px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.card{background:var(--bg-card);border-radius:16px;padding:28px;box-shadow:var(--shadow-md);transition:transform var(--transition-base),box-shadow var(--transition-base),background .4s ease;position:relative;overflow:hidden;border:1px solid transparent}
.card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--gradient-primary);transform:scaleX(0);transform-origin:left;transition:transform var(--transition-base);border-radius:16px 16px 0 0}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:rgba(91,79,233,.08)}
.card:hover::before{transform:scaleX(1)}
.card h3{font-size:19px;margin-bottom:12px;color:var(--text);font-weight:700;letter-spacing:-.2px;line-height:1.4}
.card p{color:var(--text-secondary);font-size:15px;line-height:1.85}
.icon-box{width:52px;height:52px;border-radius:14px;background:var(--gradient-card);display:flex;align-items:center;justify-content:center;margin-bottom:16px;transition:transform .35s cubic-bezier(.34,1.56,.64,1),box-shadow var(--transition-base);box-shadow:0 4px 14px rgba(91,79,233,.25)}
.card:hover .icon-box{transform:scale(1.1) rotate(-6deg);box-shadow:0 8px 22px rgba(91,79,233,.35)}
.icon-box svg{width:26px;height:26px}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.stat-num{font-size:38px;font-weight:800;color:var(--primary);line-height:1.2;letter-spacing:-1px;background:var(--gradient-primary);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.stat-label{color:var(--text-muted);font-size:15px;margin-top:6px;font-weight:500}
.article-list{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.article-item{background:var(--bg-card);border-radius:14px;padding:22px;box-shadow:0 3px 16px rgba(91,79,233,.06);transition:transform var(--transition-base),box-shadow var(--transition-base),background .4s ease;border:1px solid transparent}
.article-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(91,79,233,.08)}
.article-item h3{font-size:17px;margin-bottom:8px;color:var(--text);font-weight:700;line-height:1.45;transition:color var(--transition-fast)}
.article-item:hover h3{color:var(--primary)}
.article-meta{font-size:13px;color:var(--text-muted);margin-bottom:10px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.article-item p{font-size:14px;color:var(--text-secondary);line-height:1.8}
.article-item a{font-size:14px;font-weight:600;display:inline-block;margin-top:10px;transition:transform var(--transition-fast),color var(--transition-fast)}
.article-item a:hover{transform:translateX(4px)}
.faq-list{max-width:900px;margin:0 auto}
.faq-item{background:var(--bg-card);border-radius:12px;margin-bottom:14px;overflow:hidden;box-shadow:0 2px 12px rgba(91,79,233,.06);transition:box-shadow var(--transition-base),background .4s ease;border:1px solid transparent}
.faq-item:hover{box-shadow:var(--shadow-md);border-color:rgba(91,79,233,.08)}
.faq-item.open{box-shadow:var(--shadow-lg);border-color:rgba(91,79,233,.15)}
.faq-q{padding:18px 22px;font-weight:600;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-size:16px;color:var(--text);transition:color var(--transition-fast);gap:16px;user-select:none}
.faq-q:hover{color:var(--primary)}
.faq-q::after{content:"+";font-size:22px;color:var(--primary);transition:transform .35s cubic-bezier(.34,1.56,.64,1);flex-shrink:0;line-height:1;font-weight:400}
.faq-item.open .faq-q::after{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s cubic-bezier(.4,0,.2,1),padding .3s ease;padding:0 22px;color:var(--text-secondary);font-size:15px;line-height:1.85}
.faq-item.open .faq-a{max-height:500px;padding-bottom:20px}
.howto-step{display:flex;gap:18px;margin-bottom:22px;padding:20px;background:var(--bg-card);border-radius:14px;box-shadow:0 2px 12px rgba(91,79,233,.05);transition:transform var(--transition-base),box-shadow var(--transition-base),background .4s ease;border:1px solid transparent}
.howto-step:hover{transform:translateX(6px);box-shadow:var(--shadow-md);border-color:rgba(91,79,233,.08)}
.step-num{flex-shrink:0;width:44px;height:44px;border-radius:50%;background:var(--gradient-card);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:18px;box-shadow:0 4px 14px rgba(91,79,233,.28);transition:transform .35s cubic-bezier(.34,1.56,.64,1)}
.howto-step:hover .step-num{transform:scale(1.12) rotate(-8deg)}
.step-body h4{font-size:17px;margin-bottom:6px;color:var(--text);font-weight:700}
.step-body p{font-size:15px;color:var(--text-secondary);line-height:1.8}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px}
.contact-info{background:var(--bg-card);border-radius:16px;padding:30px;box-shadow:var(--shadow-md);transition:box-shadow var(--transition-base),background .4s ease}
.contact-info:hover{box-shadow:var(--shadow-lg)}
.contact-info h3{font-size:20px;margin-bottom:18px;color:var(--text);font-weight:700}
.contact-info ul{list-style:none}
.contact-info li{padding:12px 0;border-bottom:1px dashed var(--border);font-size:15px;color:var(--text-secondary);transition:color var(--transition-fast),padding-left var(--transition-fast);line-height:1.7}
.contact-info li:last-child{border-bottom:none}
.contact-info li:hover{color:var(--primary);padding-left:6px}
.contact-info li strong{color:var(--text);display:inline-block;min-width:90px;font-weight:600}
.map-placeholder{background:linear-gradient(135deg,var(--primary-soft),var(--bg));border-radius:16px;min-height:280px;display:flex;align-items:center;justify-content:center;color:var(--text-muted);font-size:15px;border:1px dashed #d5d5ea;overflow:hidden;transition:transform var(--transition-base),box-shadow var(--transition-base),background .4s ease}
.map-placeholder:hover{transform:scale(1.01);box-shadow:var(--shadow-lg)}
.map-placeholder svg{width:100%;height:auto;border-radius:16px}
footer{background:#1e1e2c;color:#b8b8cc;padding:50px 0 24px;margin-top:40px;transition:background .4s ease}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px;margin-bottom:30px}
footer h4{color:#fff;font-size:16px;margin-bottom:16px;font-weight:700;position:relative;padding-bottom:10px}
footer h4::after{content:"";position:absolute;left:0;bottom:0;width:28px;height:2px;background:var(--gradient-primary);border-radius:2px}
footer ul{list-style:none}
footer li{margin-bottom:10px;font-size:14px;transition:transform var(--transition-fast)}
footer li:hover{transform:translateX(4px)}
footer a{color:#b8b8cc;transition:color var(--transition-fast)}
footer a:hover{color:#fff}
footer p{font-size:14px;line-height:1.9}
.footer-bottom{border-top:1px solid #33334a;padding-top:20px;text-align:center;font-size:13px;color:#8888a0;line-height:1.9}
.footer-bottom p{margin-bottom:6px}
.back-top{position:fixed;right:24px;bottom:24px;width:48px;height:48px;border-radius:50%;background:var(--gradient-card);color:#fff;border:none;font-size:22px;cursor:pointer;box-shadow:0 6px 20px rgba(91,79,233,.4);opacity:0;pointer-events:none;transition:opacity .3s ease,transform .3s cubic-bezier(.34,1.56,.64,1),box-shadow .3s ease;z-index:999;display:flex;align-items:center;justify-content:center;line-height:1}
.back-top.show{opacity:1;pointer-events:auto}
.back-top:hover{transform:translateY(-4px) scale(1.08);box-shadow:0 12px 30px rgba(91,79,233,.55)}
.back-top:active{transform:translateY(-2px) scale(1.02)}
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s cubic-bezier(.4,0,.2,1),transform .7s cubic-bezier(.4,0,.2,1)}
.reveal.visible{opacity:1;transform:translateY(0)}
.reveal:nth-child(2){transition-delay:.08s}
.reveal:nth-child(3){transition-delay:.16s}
.reveal:nth-child(4){transition-delay:.24s}
.reveal:nth-child(5){transition-delay:.32s}
.reveal:nth-child(6){transition-delay:.4s}
.dark-mode{background:#14141f;color:#d8d8e8}
.dark-mode body{background:#14141f;color:#d8d8e8}
.dark-mode header{background:rgba(20,20,31,.95);border-color:#2a2a3c;box-shadow:0 2px 12px rgba(0,0,0,.3)}
.dark-mode nav a,.dark-mode .logo{color:#e8e8f5}
.dark-mode nav a:hover,.dark-mode .logo:hover{color:var(--primary-lighter)}
.dark-mode .card,.dark-mode .article-item,.dark-mode .faq-item,.dark-mode .contact-info,.dark-mode .howto-step{background:#1e1e2c;color:#d8d8e8;box-shadow:0 4px 20px rgba(0,0,0,.25)}
.dark-mode .card:hover,.dark-mode .article-item:hover,.dark-mode .faq-item:hover,.dark-mode .contact-info:hover,.dark-mode .howto-step:hover{box-shadow:0 10px 30px rgba(0,0,0,.4)}
.dark-mode .card h3,.dark-mode .article-item h3,.dark-mode .faq-q,.dark-mode .section-title h2,.dark-mode .step-body h4,.dark-mode .contact-info h3{color:#f0f0ff}
.dark-mode .card p,.dark-mode .article-item p,.dark-mode .faq-a,.dark-mode .step-body p,.dark-mode .contact-info li{color:#b0b0c8}
.dark-mode .contact-info li strong{color:#e8e8f5}
.dark-mode .contact-info li{border-color:#2a2a3c}
.dark-mode footer{background:#0e0e18}
.dark-mode .search-box{background:#1e1e2c;border-color:#2a2a3c}
.dark-mode .search-box input{color:#e8e8f5}
.dark-mode .search-box input::placeholder{color:#6b6b80}
.dark-mode .theme-toggle{border-color:#2a2a3c;color:var(--primary-lighter)}
.dark-mode .theme-toggle:hover{background:#2a2a3c}
.dark-mode .menu-toggle{color:var(--primary-lighter)}
.dark-mode .breadcrumb{color:#6b6b80}
.dark-mode .breadcrumb span{color:#6b6b80}
.dark-mode .stat-label{color:#8888a0}
.dark-mode .section-title p{color:#8888a0}
.dark-mode .map-placeholder{background:linear-gradient(135deg,#1a1a2e,#14141f);border-color:#2a2a3c}
.dark-mode .article-meta{color:#6b6b80}
.dark-mode .faq-q::after{color:var(--primary-lighter)}
.dark-mode .card::before{background:linear-gradient(135deg,#8B7CF6,#B8A9FF)}
.dark-mode .icon-box{background:linear-gradient(135deg,#5B4FE9,#8B7CF6)}
.dark-mode .step-num{background:linear-gradient(135deg,#5B4FE9,#8B7CF6)}
.dark-mode .back-top{background:linear-gradient(135deg,#5B4FE9,#8B7CF6)}
.dark-mode .hero{background:linear-gradient(135deg,#2a2560 0%,#3d3480 50%,#4a3d99 100%)}
.dark-mode .search-box button{background:var(--primary-light)}
.dark-mode .search-box button:hover{background:var(--primary-lighter);color:#1e1e2c}
.dark-mode .btn-primary{background:#f0f0ff;color:var(--primary)}
.dark-mode .btn-primary:hover{background:#fff;color:var(--primary)}
.dark-mode .stat-num{background:linear-gradient(135deg,#8B7CF6,#B8A9FF);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.dark-mode footer h4::after{background:linear-gradient(135deg,#8B7CF6,#B8A9FF)}
.dark-mode ::-webkit-scrollbar-thumb{background:#3d3480}
.dark-mode ::-webkit-scrollbar-thumb:hover{background:#5B4FE9}
.dark-mode .footer-bottom{border-color:#2a2a3c}
.dark-mode .faq-item.open{border-color:rgba(139,124,246,.25)}
.dark-mode .card:hover,.dark-mode .article-item:hover,.dark-mode .faq-item:hover,.dark-mode .howto-step:hover{border-color:rgba(139,124,246,.15)}
@media(max-width:1024px){
.hero h1{font-size:32px}
.hero p{font-size:16px}
.grid-3{grid-template-columns:repeat(2,1fr)}
.footer-grid{grid-template-columns:1.5fr 1fr 1fr}
}
@media(max-width:900px){
.hero-inner{grid-template-columns:1fr;gap:30px}
.grid-3,.grid-2,.stats,.article-list,.contact-grid,.footer-grid{grid-template-columns:1fr}
nav ul{display:none}
nav ul.open{display:flex;flex-direction:column;position:absolute;top:100%;left:0;right:0;background:#fff;padding:20px;box-shadow:0 8px 20px rgba(0,0,0,.1);gap:0;border-bottom:1px solid var(--border);animation:slideDown .3s ease}
@keyframes slideDown{from{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}
nav ul.open li{border-bottom:1px solid var(--border)}
nav ul.open li:last-child{border-bottom:none}
nav ul.open a{display:block;padding:12px 0;font-size:16px}
nav ul.open a::after{display:none}
.menu-toggle{display:block}
.hero h1{font-size:28px}
.hero{padding:50px 0 44px}
.hero p{font-size:15px}
.carousel{min-height:auto;padding:22px}
section{padding:44px 0}
.section-title{margin-bottom:32px}
.section-title h2{font-size:24px}
.section-title p{font-size:15px}
.stat-num{font-size:32px}
.card{padding:22px}
.faq-q{font-size:15px;padding:16px 18px}
.faq-a{padding:0 18px;font-size:14px}
.faq-item.open .faq-a{padding-bottom:16px}
.howto-step{padding:16px;gap:14px}
.step-num{width:38px;height:38px;font-size:16px}
.step-body h4{font-size:16px}
.step-body p{font-size:14px}
.contact-info{padding:22px}
.contact-info li{font-size:14px}
.contact-info li strong{min-width:80px}
.dark-mode nav ul.open{background:#1e1e2c;border-color:#2a2a3c}
.dark-mode nav ul.open li{border-color:#2a2a3c}
.back-top{right:16px;bottom:16px;width:44px;height:44px;font-size:20px}
.search-box input{width:120px}
.search-box input:focus{width:150px}
}
@media(max-width:640px){
.container{padding:0 16px}
.nav-wrap{padding:12px 0;gap:8px}
.logo{font-size:19px}
.logo-mark{width:32px;height:32px}
.search-box{padding:5px 5px 5px 12px}
.search-box input{width:90px;font-size:13px}
.search-box input:focus{width:120px}
.search-box button{padding:4px 10px;font-size:13px}
.theme-toggle{padding:5px 9px;font-size:14px}
.hero{padding:40px 0 36px}
.hero h1{font-size:23px;line-height:1.35}
.hero p{font-size:14px}
.hero-actions{flex-direction:column}
.btn{width:100%;padding:12px 20px}
.carousel{padding:18px}
.slide h3{font-size:17px}
.slide p{font-size:14px}
section{padding:36px 0}
.section-title h2{font-size:21px}
.section-title p{font-size:14px}
.stat-num{font-size:28px}
.stat-label{font-size:14px}
.card{padding:18px;border-radius:14px}
.card h3{font-size:17px}
.card p{font-size:14px}
.icon-box{width:44px;height:44px;border-radius:12px}
.icon-box svg{width:22px;height:22px}
.article-item{padding:18px}
.article-item h3{font-size:16px}
.faq-q{font-size:14px;padding:14px 16px}
.faq-a{padding:0 16px;font-size:13.5px}
.faq-item.open .faq-a{padding-bottom:14px}
.howto-step{padding:14px;gap:12px;border-radius:12px}
.step-num{width:34px;height:34px;font-size:15px}
.step-body h4{font-size:15px}
.step-body p{font-size:13.5px}
.contact-info{padding:18px}
.contact-info h3{font-size:17px}
.contact-info li{font-size:13.5px;padding:10px 0}
.contact-info li strong{min-width:auto;display:block;margin-bottom:2px}
footer{padding:36px 0 20px}
.footer-grid{gap:24px;margin-bottom:24px}
footer h4{font-size:15px;margin-bottom:12px}
footer li{font-size:13px}
.footer-bottom{font-size:12px}
.back-top{right:12px;bottom:12px;width:40px;height:40px;font-size:18px}
}
@media(prefers-reduced-motion:reduce){
*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
.reveal{opacity:1;transform:none}
}
@media print{
header,footer,.back-top,.hero-actions,.search-box,.theme-toggle,.menu-toggle{display:none}
body{background:#fff;color:#000}
.card,.article-item,.faq-item,.contact-info{box-shadow:none;border:1px solid #ddd}
.hero{background:#f0f0f0;color:#000}
}