/* === Reset & Base === */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:#1a1a2e;background:#f8f9fc;line-height:1.6}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
ul{list-style:none}

/* === Variables === */
:root{
--primary:#07C160;--primary-dark:#06AD56;--primary-light:#e8f8ef;
--accent:#10B981;--text:#1a1a2e;--text2:#555;--text3:#999;
--bg:#f8f9fc;--card:#fff;--border:#e8ecf1;--shadow:0 1px 3px rgba(0,0,0,.06);
--radius:8px;--radius-sm:5px;
--maxw:1200px;--navh:56px;
}

/* === Nav === */
.nav{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
.nav-inner{max-width:var(--maxw);margin:0 auto;padding:0 20px;display:flex;align-items:center;justify-content:space-between;height:var(--navh)}
.nav-logo{display:flex;align-items:center;gap:8px;font-weight:700;font-size:18px;color:var(--primary)}
.nav-logo svg{width:28px;height:28px}
.nav-links{display:flex;gap:4px}
.nav-links a{padding:6px 14px;border-radius:var(--radius-sm);font-size:14px;color:var(--text2);transition:all .15s;font-weight:500}
.nav-links a:hover,.nav-links a.active{color:var(--primary);background:var(--primary-light)}
.menu-btn{display:none;background:none;border:none;font-size:22px;cursor:pointer;color:var(--text);padding:4px 8px}

/* === Hero === */
.hero{padding:60px 20px 48px;text-align:center;max-width:800px;margin:0 auto}
.hero-icon{display:inline-flex;align-items:center;justify-content:center;width:72px;height:72px;border-radius:18px;background:linear-gradient(135deg,var(--primary),var(--accent));margin-bottom:20px;box-shadow:0 8px 24px rgba(7,193,96,.25)}
.hero-icon svg{width:40px;height:40px}
.hero h1{font-size:clamp(28px,5vw,40px);font-weight:800;line-height:1.25;margin-bottom:12px;letter-spacing:-.5px}
.hero h1 span{color:var(--primary)}
.hero p{font-size:17px;color:var(--text2);max-width:560px;margin:0 auto 24px;line-height:1.7}
.hero-btns{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}
.btn{padding:8px 20px;border-radius:var(--radius-sm);font-size:14px;font-weight:600;cursor:pointer;display:inline-flex;align-items:center;gap:6px;transition:all .15s;border:none;white-space:nowrap}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 2px 8px rgba(7,193,96,.25)}
.btn-primary:hover{background:var(--primary-dark);box-shadow:0 2px 12px rgba(7,193,96,.35)}
.btn-outline{background:transparent;color:var(--primary);border:1.5px solid var(--primary)}
.btn-outline:hover{background:var(--primary-light)}
.btn-lg{padding:10px 28px;font-size:15px}

/* === Section === */
.sec{padding:48px 20px}
.sec-inner{max-width:var(--maxw);margin:0 auto}
.sec-title{text-align:center;font-size:clamp(22px,4vw,28px);font-weight:700;margin-bottom:8px}
.sec-sub{text-align:center;color:var(--text2);font-size:15px;margin-bottom:32px}

/* === Features Grid === */
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.feat-card{background:var(--card);border-radius:var(--radius);padding:24px;border:1px solid var(--border);transition:all .2s;box-shadow:var(--shadow)}
.feat-card:hover{box-shadow:0 4px 16px rgba(0,0,0,.08);transform:translateY(-2px)}
.feat-icon{width:44px;height:44px;border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:14px;font-size:22px}
.feat-icon.green{background:var(--primary-light);color:var(--primary)}
.feat-card h3{font-size:16px;font-weight:600;margin-bottom:6px}
.feat-card p{font-size:13px;color:var(--text2);line-height:1.65}

/* === Stats === */
.stats{background:var(--primary);color:#fff;padding:36px 20px;border-radius:var(--radius);display:flex;justify-content:center;gap:48px;flex-wrap:wrap;text-align:center}
.stat-item h2{font-size:clamp(24px,4vw,36px);font-weight:800;line-height:1.1}
.stat-item p{font-size:13px;opacity:.85;margin-top:4px}
.stats-wrap .sec-inner>.sec-title,.stats-wrap .sec-inner>.sec-sub{color:inherit}

/* === Highlight Cards === */
.hl-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:16px}
.hl-card{background:var(--card);border-radius:var(--radius);padding:20px 24px;border:1px solid var(--border);display:flex;gap:14px;align-items:flex-start;box-shadow:var(--shadow)}
.hl-card .hl-icon{flex-shrink:0;font-size:28px;margin-top:2px}
.hl-card h4{font-size:15px;font-weight:600;margin-bottom:3px}
.hl-card p{font-size:13px;color:var(--text2);line-height:1.6}

/* === CTA === */
.cta{text-align:center;padding:36px 20px;background:var(--card);border-radius:var(--radius);border:1px solid var(--border);box-shadow:var(--shadow)}
.cta h2{font-size:22px;font-weight:700;margin-bottom:6px}
.cta p{color:var(--text2);font-size:14px;margin-bottom:16px}
.cta .btn{margin:0 4px}

/* === Comparison Table === */
.comp-table{overflow-x:auto;margin:0 auto;max-width:900px}
.comp-table table{width:100%;border-collapse:collapse;font-size:13px}
.comp-table th,.comp-table td{padding:10px 14px;text-align:center;border-bottom:1px solid var(--border)}
.comp-table th{background:var(--primary-light);font-weight:600;font-size:13px;color:var(--text)}
.comp-table th:first-child,.comp-table td:first-child{text-align:left;font-weight:500}
.comp-table .check{color:var(--primary);font-weight:700}
.comp-table .cross{color:#ccc}

/* === FAQ === */
.faq-list{max-width:760px;margin:0 auto}
.faq-item{background:var(--card);border-radius:var(--radius);margin-bottom:10px;border:1px solid var(--border);overflow:hidden;box-shadow:var(--shadow)}
.faq-q{width:100%;text-align:left;padding:14px 40px 14px 18px;font-size:15px;font-weight:600;background:none;border:none;cursor:pointer;position:relative;color:var(--text);line-height:1.5}
.faq-q::after{content:'+';position:absolute;right:14px;top:50%;transform:translateY(-50%);font-size:20px;color:var(--primary);font-weight:400;transition:transform .2s}
.faq-item.open .faq-q::after{content:'\2212'}
.faq-a{display:none;padding:0 18px 16px;font-size:14px;color:var(--text2);line-height:1.75}
.faq-item.open .faq-a{display:block}

/* === Download Page === */
.dl-hero{text-align:center;padding:48px 20px 20px}
.dl-card{max-width:640px;margin:0 auto;background:var(--card);border-radius:var(--radius);padding:28px;border:1px solid var(--border);box-shadow:var(--shadow)}
.dl-card h2{font-size:20px;margin-bottom:4px}
.dl-card .ver{color:var(--text3);font-size:13px;margin-bottom:16px}
.dl-opts{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-bottom:20px}
.dl-info{background:var(--bg);border-radius:var(--radius-sm);padding:16px;margin-top:16px}
.dl-info h4{font-size:13px;color:var(--text2);margin-bottom:8px}
.dl-info ul{list-style:disc;padding-left:18px;font-size:13px;color:var(--text2);line-height:1.8}

/* === Steps === */
.steps{max-width:760px;margin:0 auto}
.step{display:flex;gap:14px;margin-bottom:20px;align-items:flex-start}
.step-num{flex-shrink:0;width:32px;height:32px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px}
.step-body h4{font-size:15px;font-weight:600;margin-bottom:2px}
.step-body p,.step-body code{font-size:13px;color:var(--text2)}
.step-body code{background:#f0f0f0;padding:1px 6px;border-radius:3px;font-size:12px}

/* === Page Header === */
.page-header{text-align:center;padding:40px 20px 16px}
.page-header h1{font-size:clamp(24px,4vw,32px);font-weight:700}
.page-header p{color:var(--text2);font-size:15px;max-width:560px;margin:8px auto 0}

/* === Breadcrumb === */
.breadcrumb{max-width:var(--maxw);margin:0 auto;padding:8px 20px;font-size:12px;color:var(--text3)}
.breadcrumb a{color:var(--primary)}
.breadcrumb span{color:var(--text3)}

/* === Modal === */
.modal-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.55);z-index:9999;justify-content:center;align-items:center}
.modal-overlay.show{display:flex}
.modal-box{background:#fff;border-radius:12px;padding:28px 24px 20px;text-align:center;max-width:320px;width:90%;position:relative;box-shadow:0 12px 40px rgba(0,0,0,.25);animation:modal-in .25s ease}
@keyframes modal-in{from{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}
.modal-close{position:absolute;top:8px;right:12px;background:none;border:none;font-size:22px;color:#999;cursor:pointer;padding:2px 6px;line-height:1}
.modal-close:hover{color:#333}
.modal-qr-wrap{display:inline-block;padding:8px;border-radius:12px;margin-bottom:12px}
.modal-qr-wrap img{display:block;width:150px;height:150px;border-radius:6px}
.modal-qr-wrap.pulse{animation:qr-pulse 2s ease-in-out infinite}
@keyframes qr-pulse{0%,100%{box-shadow:0 0 0 0 rgba(7,193,96,.4)}50%{box-shadow:0 0 0 12px rgba(7,193,96,0)}}
.modal-text{font-size:14px;color:#333;line-height:1.7;margin-bottom:14px}
.modal-text .sub{font-size:12px;color:#999}
.modal-text .tip{font-size:11px;color:#aaa}
.modal-ok{padding:6px 24px;font-size:13px;cursor:pointer}

/* === Footer === */
.footer{text-align:center;padding:24px 20px;font-size:12px;color:var(--text3);border-top:1px solid var(--border);margin-top:20px}
.footer a{color:var(--primary)}
.footer p{margin-top:6px}

/* === Responsive === */
@media(max-width:768px){
.nav-links{display:none;position:absolute;top:var(--navh);left:0;right:0;background:var(--card);flex-direction:column;border-bottom:1px solid var(--border);padding:8px 0;box-shadow:0 4px 12px rgba(0,0,0,.06)}
.nav-links.show{display:flex}
.nav-links a{padding:10px 20px;border-radius:0}
.menu-btn{display:block}
.hero{padding:40px 16px 32px}
.sec{padding:32px 16px}
.stats{gap:24px}
.dl-opts{flex-direction:column}
.feat-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:480px){
.feat-grid{grid-template-columns:1fr}
.hl-grid{grid-template-columns:1fr}
.hero h1{font-size:24px}
}