*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:#2d2d3a;line-height:1.7;background:#fff}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
button{cursor:pointer;border:none;font-family:inherit}

@keyframes spin{from{transform:rotate(0deg)}to{transform:rotate(360deg)}}

.wrap{max-width:1180px;margin:0 auto;padding:0 24px}

/* ===== NAVBAR ===== */
.nb-nav{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,0.92);backdrop-filter:blur(12px);border-bottom:1px solid rgba(26,26,46,0.08);transition:box-shadow .3s}
.nb-nav-inner{max-width:1180px;margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;height:64px}
.nb-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:20px;color:#1a1a2e}
.nb-brand-icon{width:36px;height:36px;flex-shrink:0}
.nb-links{display:flex;align-items:center;gap:6px;list-style:none}
.nb-link{padding:6px 14px;border-radius:20px;font-size:14px;font-weight:500;color:#555;transition:all .25s}
.nb-link:hover{color:#ff6b35}
.nb-link.on{background:#ff6b35;color:#fff}
.nb-mob{display:none;width:32px;height:32px;background:none;border:none;flex-direction:column;justify-content:center;align-items:center;gap:5px}
.nb-mob span{display:block;width:22px;height:2px;background:#1a1a2e;border-radius:2px}

/* ===== BUTTONS ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 28px;border-radius:10px;font-size:15px;font-weight:600;transition:all .25s;border:none;cursor:pointer}
.btn-tang{background:#ff6b35;color:#fff}
.btn-tang:hover{background:#e85a28}
.btn-cyan{background:#00d4aa;color:#fff}
.btn-cyan:hover{background:#00b894}
.btn-outline{background:transparent;color:#ff6b35;border:2px solid #ff6b35}
.btn-outline:hover{background:#ff6b35;color:#fff}
.btn-white{background:#fff;color:#1a1a2e;border:2px solid #e0e0e8}
.btn-white:hover{border-color:#ff6b35;color:#ff6b35}
.btn-ghost{background:transparent;color:#fff;border:2px solid rgba(255,255,255,0.4)}
.btn-ghost:hover{background:rgba(255,255,255,0.15)}
.btn-lg{padding:16px 36px;font-size:17px;border-radius:12px}
.btn-sm{padding:8px 18px;font-size:13px;border-radius:8px}
.btn:disabled{opacity:0.6;cursor:not-allowed}

/* ===== SECTIONS ===== */
.sec{padding:90px 0}
.sec-white{background:#fff}
.sec-mist{background:#f6f5f9}
.sec-ink{background:#1a1a2e;color:#fff}
.sec-ink2{background:#12121f;color:#fff}
.sec-head{text-align:center;margin-bottom:56px}
.sec-chip{display:inline-flex;align-items:center;gap:6px;padding:6px 16px;border-radius:20px;font-size:13px;font-weight:600;margin-bottom:16px}
.sc-tang{background:rgba(255,107,53,0.1);color:#ff6b35}
.sc-cyan{background:rgba(0,212,170,0.1);color:#00b894}
.sc-violet{background:rgba(139,92,246,0.1);color:#8b5cf6}
.sc-ink{background:rgba(255,255,255,0.1);color:rgba(255,255,255,0.8)}
.sec-chip-dot{width:6px;height:6px;border-radius:50%;background:currentColor}
.sec-title{font-size:36px;font-weight:800;line-height:1.25;color:#1a1a2e;margin-bottom:14px}
.sec-sub{font-size:17px;color:#666;max-width:620px;margin:0 auto}
.sec-title-light{color:#fff}
.sec-sub-light{color:rgba(255,255,255,0.65)}
.hl{color:#ff6b35}
.hl2{color:#00d4aa}
.hl3{color:#8b5cf6}

/* ===== HERO ===== */
.hero{background:linear-gradient(160deg,#1a1a2e 0%,#2d1b4e 40%,#1a1a2e 100%);color:#fff;padding:100px 0 80px;position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;width:500px;height:500px;border-radius:50%;background:radial-gradient(circle,rgba(255,107,53,0.15),transparent 70%);top:-100px;right:-100px;pointer-events:none}
.hero::after{content:'';position:absolute;width:400px;height:400px;border-radius:50%;background:radial-gradient(circle,rgba(0,212,170,0.1),transparent 70%);bottom:-80px;left:-80px;pointer-events:none}
.hero-inner{position:relative;z-index:2;display:flex;align-items:center;gap:60px}
.hero-text{flex:1}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 18px;background:rgba(255,255,255,0.08);border:1px solid rgba(255,255,255,0.12);border-radius:24px;font-size:13px;font-weight:600;color:rgba(255,255,255,0.85);margin-bottom:24px}
.hero-eyebrow-dot{width:8px;height:8px;border-radius:50%;background:#ff6b35}
.hero-h1{font-size:48px;font-weight:800;line-height:1.15;margin-bottom:20px}
.hero-hl{background:linear-gradient(120deg,#ff6b35,#ffb347);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-p{font-size:18px;color:rgba(255,255,255,0.7);margin-bottom:32px;max-width:520px;line-height:1.8}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:36px}
.hero-trust{display:flex;gap:20px;flex-wrap:wrap}
.hero-trust-item{display:flex;align-items:center;gap:6px;font-size:13px;color:rgba(255,255,255,0.6)}
.hero-trust-icon{width:16px;height:16px;color:#00d4aa}
.hero-vis{flex:1;display:flex;justify-content:center;align-items:center}

/* Hero dashboard mockup */
.hero-dash{width:420px;background:rgba(255,255,255,0.06);border:1px solid rgba(255,255,255,0.1);border-radius:16px;padding:24px;backdrop-filter:blur(8px)}
.hd-top{display:flex;align-items:center;gap:8px;margin-bottom:20px;padding-bottom:14px;border-bottom:1px solid rgba(255,255,255,0.08)}
.hd-dot{width:8px;height:8px;border-radius:50%}
.hd-dot.r{background:#ff5f57}
.hd-dot.y{background:#febc2e}
.hd-dot.g{background:#28c840}
.hd-title{font-size:13px;color:rgba(255,255,255,0.5);margin-left:8px}
.hd-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.hd-card{background:rgba(255,255,255,0.05);border:1px solid rgba(255,255,255,0.08);border-radius:10px;padding:16px;text-align:center}
.hd-card-val{font-size:24px;font-weight:800;margin-bottom:4px}
.hd-card-val.cv-tang{color:#ff6b35}
.hd-card-val.cv-cyan{color:#00d4aa}
.hd-card-val.cv-violet{color:#8b5cf6}
.hd-card-val.cv-gold{color:#fbbf24}
.hd-card-lbl{font-size:12px;color:rgba(255,255,255,0.5)}

/* ===== STATS STRIP ===== */
.stats-strip{background:#1a1a2e;border-top:1px solid rgba(255,255,255,0.06);border-bottom:1px solid rgba(255,255,255,0.06);padding:32px 0}
.stats-row{display:flex;justify-content:space-around;flex-wrap:wrap;gap:20px}
.st-item{text-align:center;min-width:140px}
.st-num{font-size:32px;font-weight:800;margin-bottom:4px}
.st-num.cn-tang{color:#ff6b35}
.st-num.cn-cyan{color:#00d4aa}
.st-num.cn-violet{color:#8b5cf6}
.st-num.cn-gold{color:#fbbf24}
.st-num.cn-rose{color:#f43f5e}
.st-lbl{font-size:13px;color:rgba(255,255,255,0.5)}

/* ===== FEATURE CARDS ===== */
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feat-card{background:#fff;border:1px solid #eee;border-radius:14px;padding:32px 28px;transition:all .3s;position:relative;overflow:hidden}
.feat-card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;border-radius:14px 14px 0 0;transition:height .3s}
.feat-card:hover{transform:translateY(-4px);box-shadow:0 12px 40px rgba(0,0,0,0.08)}
.fc-tang::before{background:#ff6b35}
.fc-cyan::before{background:#00d4aa}
.fc-violet::before{background:#8b5cf6}
.fc-gold::before{background:#fbbf24}
.fc-rose::before{background:#f43f5e}
.fc-sky::before{background:#0ea5e9}
.feat-icon{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.fi-tang{background:rgba(255,107,53,0.1);color:#ff6b35}
.fi-cyan{background:rgba(0,212,170,0.1);color:#00d4aa}
.fi-violet{background:rgba(139,92,246,0.1);color:#8b5cf6}
.fi-gold{background:rgba(251,191,36,0.1);color:#d97706}
.fi-rose{background:rgba(244,63,94,0.1);color:#f43f5e}
.fi-sky{background:rgba(14,165,233,0.1);color:#0ea5e9}
.feat-name{font-size:18px;font-weight:700;color:#1a1a2e;margin-bottom:10px}
.feat-desc{font-size:14px;color:#666;line-height:1.7}

/* ===== DEEP ROWS ===== */
.deep-row{display:flex;align-items:center;gap:60px;margin-bottom:64px}
.deep-row:last-child{margin-bottom:0}
.deep-row.flip{flex-direction:row-reverse}
.deep-info{flex:1}
.deep-chip{display:inline-flex;align-items:center;gap:6px;padding:5px 14px;border-radius:16px;font-size:12px;font-weight:600;margin-bottom:14px}
.dc-tang{background:rgba(255,107,53,0.1);color:#ff6b35}
.dc-cyan{background:rgba(0,212,170,0.1);color:#00b894}
.dc-violet{background:rgba(139,92,246,0.1);color:#8b5cf6}
.dc-gold{background:rgba(251,191,36,0.1);color:#d97706}
.deep-chip-dot{width:5px;height:5px;border-radius:50%;background:currentColor}
.deep-h3{font-size:26px;font-weight:700;color:#1a1a2e;margin-bottom:12px}
.deep-desc{font-size:15px;color:#555;margin-bottom:18px;line-height:1.8}
.deep-list{list-style:none}
.deep-list-item{display:flex;align-items:flex-start;gap:10px;margin-bottom:10px;font-size:14px;color:#555}
.dl-dot{width:6px;height:6px;border-radius:50%;margin-top:8px;flex-shrink:0}
.dl-dot.tang{background:#ff6b35}
.dl-dot.cyan{background:#00d4aa}
.dl-dot.violet{background:#8b5cf6}
.deep-vis{flex:1;display:flex;justify-content:center}

/* Deep visual panel */
.dv-panel{background:#f6f5f9;border:1px solid #eee;border-radius:14px;padding:28px;width:100%;max-width:460px}
.dv-panel.dark{background:rgba(255,255,255,0.05);border-color:rgba(255,255,255,0.1)}
.dv-panel-title{font-size:14px;font-weight:600;color:#1a1a2e;margin-bottom:18px}
.dv-panel-title.light{color:rgba(255,255,255,0.8)}
.dv-bar-row{display:flex;align-items:center;gap:12px;margin-bottom:10px}
.dv-bar-label{font-size:12px;color:#888;width:70px;flex-shrink:0}
.dv-bar-track{flex:1;height:8px;background:#e5e5ea;border-radius:4px;overflow:hidden}
.dv-bar-track.dark{background:rgba(255,255,255,0.08)}
.dv-bar-fill{height:100%;border-radius:4px}
.dvf-tang{background:linear-gradient(90deg,#ff6b35,#ffb347)}
.dvf-cyan{background:linear-gradient(90deg,#00d4aa,#00e5c3)}
.dvf-violet{background:linear-gradient(90deg,#8b5cf6,#a78bfa)}
.dvf-gold{background:linear-gradient(90deg,#fbbf24,#fcd34d)}
.dv-stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:18px}
.dv-stat{text-align:center}
.dv-stat-n{font-size:20px;font-weight:800}
.dv-stat-n.c-tang{color:#ff6b35}
.dv-stat-n.c-cyan{color:#00d4aa}
.dv-stat-n.c-violet{color:#8b5cf6}
.dv-stat-l{font-size:11px;color:#888}

/* ===== PLATFORM CARDS ===== */
.plat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.plat-card{background:#fff;border:1px solid #eee;border-radius:14px;padding:28px 24px;text-align:center;transition:all .3s;position:relative}
.plat-card.featured{border-color:#ff6b35;box-shadow:0 4px 20px rgba(255,107,53,0.12)}
.plat-badge{position:absolute;top:-1px;left:50%;transform:translateX(-50%);background:#ff6b35;color:#fff;font-size:11px;font-weight:700;padding:4px 14px;border-radius:0 0 8px 8px}
.plat-icon{width:52px;height:52px;margin:0 auto 14px}
.plat-name{font-size:18px;font-weight:700;color:#1a1a2e;margin-bottom:6px}
.plat-ver{font-size:13px;color:#888;margin-bottom:6px}
.plat-req{font-size:12px;color:#aaa;margin-bottom:16px;line-height:1.5}

/* ===== REVIEWS ===== */
.rev-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.rev-card{background:#fff;border:1px solid #eee;border-radius:14px;padding:28px}
.rev-header{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.rev-avatar{width:42px;height:42px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;color:#fff;flex-shrink:0}
.av-tang{background:linear-gradient(135deg,#ff6b35,#ff9a76)}
.av-cyan{background:linear-gradient(135deg,#00d4aa,#00e5c3)}
.av-violet{background:linear-gradient(135deg,#8b5cf6,#a78bfa)}
.av-gold{background:linear-gradient(135deg,#f59e0b,#fbbf24)}
.av-rose{background:linear-gradient(135deg,#f43f5e,#fb7185)}
.av-sky{background:linear-gradient(135deg,#0ea5e9,#38bdf8)}
.rev-meta{flex:1}
.rev-name{font-size:15px;font-weight:700;color:#1a1a2e}
.rev-role{font-size:12px;color:#888}
.rev-stars{display:flex;gap:3px;margin-bottom:12px}
.rev-star{width:16px;height:16px;color:#fbbf24}
.rev-text{font-size:14px;color:#555;line-height:1.7}

/* ===== SECURITY ===== */
.sec-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:56px}
.sec-card{background:#f6f5f9;border:1px solid #eee;border-radius:14px;padding:28px;text-align:center}
.sec-card-icon{width:44px;height:44px;margin:0 auto 14px;color:#00d4aa}
.sec-card-title{font-size:16px;font-weight:700;color:#1a1a2e;margin-bottom:8px}
.sec-card-desc{font-size:13px;color:#666;line-height:1.6}

/* ===== COMPARISON TABLE ===== */
.cmp-wrap{overflow-x:auto;border-radius:14px;border:1px solid #eee}
.cmp-table{width:100%;border-collapse:collapse;font-size:14px}
.cmp-table th,.cmp-table td{padding:14px 18px;text-align:center;border-bottom:1px solid #f0f0f0}
.cmp-table th{background:#f6f5f9;font-weight:700;color:#1a1a2e;font-size:13px}
.cmp-table td:first-child,.cmp-table th:first-child{text-align:left;font-weight:600}
.cmp-hl{background:rgba(255,107,53,0.04)}
.yes{color:#00d4aa;font-weight:700}
.no{color:#ef4444;font-weight:700}
.part{color:#f59e0b;font-weight:700}

/* ===== VERSIONS ===== */
.ver-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.ver-card{background:#fff;border:1px solid #eee;border-radius:16px;padding:36px 28px;position:relative;transition:all .3s}
.ver-card:hover{box-shadow:0 8px 32px rgba(0,0,0,0.08)}
.ver-card.popular{border-color:#ff6b35;box-shadow:0 4px 24px rgba(255,107,53,0.12)}
.ver-badge{position:absolute;top:-1px;right:24px;background:#ff6b35;color:#fff;font-size:11px;font-weight:700;padding:4px 14px;border-radius:0 0 8px 8px}
.ver-name{font-size:22px;font-weight:800;color:#1a1a2e;margin-bottom:8px}
.ver-price{font-size:32px;font-weight:800;color:#ff6b35;margin-bottom:4px}
.ver-price-note{font-size:13px;color:#888;margin-bottom:20px}
.ver-features{list-style:none;margin-bottom:28px}
.ver-feat{display:flex;align-items:center;gap:8px;font-size:14px;color:#555;padding:8px 0;border-bottom:1px solid #f5f5f5}
.ver-feat:last-child{border-bottom:none}
.ver-check{width:16px;height:16px;flex-shrink:0}
.ver-check.yes{color:#00d4aa}
.ver-check.no{color:#ddd}

/* ===== FAQ ===== */
.faq-list{max-width:780px;margin:0 auto}
.faq-item{border:1px solid #eee;border-radius:12px;margin-bottom:12px;overflow:hidden;transition:border-color .3s}
.faq-item.open{border-color:#ff6b35}
.faq-q{display:flex;align-items:center;justify-content:space-between;padding:18px 24px;cursor:pointer;font-size:15px;font-weight:600;color:#1a1a2e;background:#fff;transition:background .2s}
.faq-q:hover{background:#faf9fc}
.faq-chevron{width:20px;height:20px;transition:transform .3s;flex-shrink:0;color:#999}
.faq-item.open .faq-chevron{transform:rotate(180deg);color:#ff6b35}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-item.open .faq-a{max-height:600px}
.faq-a-inner{padding:0 24px 20px;font-size:14px;color:#666;line-height:1.8}

/* ===== CTA BANNER ===== */
.cta-banner{background:linear-gradient(135deg,#1a1a2e,#2d1b4e);border-radius:20px;padding:60px;text-align:center;margin:0 auto;max-width:1000px}
.cta-h2{font-size:30px;font-weight:800;color:#fff;margin-bottom:14px}
.cta-p{font-size:16px;color:rgba(255,255,255,0.65);margin-bottom:28px}
.cta-btns{display:flex;justify-content:center;gap:14px;flex-wrap:wrap}

/* ===== FOOTER ===== */
.nb-footer{background:#0e0e1a;color:rgba(255,255,255,0.5);padding:32px 0}
.nb-footer-inner{max-width:1180px;margin:0 auto;padding:0 24px;text-align:center}
.nb-footer-brand{display:flex;align-items:center;justify-content:center;gap:8px;margin-bottom:16px;font-weight:700;font-size:16px;color:rgba(255,255,255,0.7)}
.nb-footer-brand-icon{width:24px;height:24px}
.nb-footer-sec{font-size:13px;color:rgba(255,255,255,0.4);margin-bottom:10px}
.nb-footer-note{font-size:12px;color:rgba(255,255,255,0.3)}

/* ===== RESPONSIVE ===== */
@media(max-width:1024px){
  .hero-inner{flex-direction:column;text-align:center}
  .hero-p{margin:0 auto 32px}
  .hero-btns,.hero-trust{justify-content:center}
  .hero-dash{width:100%;max-width:400px}
  .deep-row,.deep-row.flip{flex-direction:column}
  .feat-grid{grid-template-columns:repeat(2,1fr)}
  .plat-grid{grid-template-columns:repeat(2,1fr)}
  .ver-grid{grid-template-columns:repeat(2,1fr)}
  .sec-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .nb-links{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;flex-direction:column;padding:16px;border-bottom:1px solid #eee;box-shadow:0 4px 20px rgba(0,0,0,0.08)}
  .nb-links.show{display:flex}
  .nb-mob{display:flex}
  .hero-h1{font-size:32px}
  .sec-title{font-size:28px}
  .feat-grid{grid-template-columns:1fr}
  .rev-grid{grid-template-columns:1fr}
  .plat-grid{grid-template-columns:1fr}
  .ver-grid{grid-template-columns:1fr}
  .sec-grid{grid-template-columns:1fr}
  .stats-row{flex-direction:column;gap:16px}
  .cta-banner{padding:40px 24px;border-radius:14px}
  .dv-stat-grid{grid-template-columns:repeat(3,1fr)}
}
@media(max-width:480px){
  .hero{padding:70px 0 50px}
  .sec{padding:60px 0}
  .hd-grid{grid-template-columns:1fr}
  .hero-h1{font-size:26px}
  .deep-h3{font-size:22px}
}