/* ===== Neon Blueprint / Circuit Board Theme ===== */
/* Dark deep-blue base + Electric blue + Lime green accents */

@keyframes spin{from{transform:rotate(0deg)}to{transform:rotate(360deg)}}
@keyframes pulse-glow{0%,100%{opacity:.6}50%{opacity:1}}
@keyframes trace-flow{0%{background-position:0 0}100%{background-position:40px 40px}}
@keyframes float-y{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

:root{
  --bg:#0a0f1e;--bg2:#0f1629;--bg3:#141c33;--surface:#1a2340;--surface2:#1e2a4a;
  --blue:#3b82f6;--blue-dim:#2563eb;--lime:#84cc16;--lime-dim:#65a30d;
  --cyan:#22d3ee;--text:#e2e8f0;--text2:#94a3b8;--text3:#64748b;
  --white:#ffffff;--border:#1e3a5f;--border2:#253a5a;
  --radius:10px;--radius-lg:16px;--radius-xl:24px;
  --shadow:0 4px 24px rgba(0,0,0,.4);--shadow-blue:0 0 30px rgba(59,130,246,.15);
}

html{scroll-behavior:smooth}
body{font-family:'Segoe UI','PingFang SC','Microsoft YaHei',system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text);line-height:1.7;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--blue);text-decoration:none;transition:color .2s}
a:hover{color:var(--lime)}
button{cursor:pointer;font-family:inherit}

.wrap{max-width:1180px;margin:0 auto;padding:0 20px}

/* ===== Topbar ===== */
.topbar{position:sticky;top:0;z-index:1000;background:rgba(10,15,30,.85);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--border)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;max-width:1180px;margin:0 auto;padding:10px 20px}
.brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:var(--white);text-decoration:none}
.brand svg{width:28px;height:28px}
.brand-sub{font-size:12px;color:var(--text3);font-weight:400;margin-left:2px}
.nav-list{display:flex;align-items:center;gap:6px;list-style:none}
.nav-list a{display:inline-block;padding:7px 18px;border-radius:20px;font-size:14px;font-weight:500;color:var(--text2);transition:all .25s;border:1px solid transparent}
.nav-list a:hover{color:var(--white);background:var(--surface)}
.nav-list a.on{color:var(--white);background:var(--blue);border-color:var(--blue)}
.nav-cta{padding:7px 20px;border-radius:20px;font-size:14px;font-weight:600;color:var(--bg);background:var(--lime);border:none;transition:all .25s}
.nav-cta:hover{background:var(--lime-dim);transform:translateY(-1px)}

/* ===== Buttons ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 28px;border-radius:var(--radius);font-size:15px;font-weight:600;border:none;transition:all .25s;cursor:pointer;text-decoration:none}
.btn-blue{background:var(--blue);color:var(--white)}
.btn-blue:hover{background:var(--blue-dim);transform:translateY(-2px);box-shadow:var(--shadow-blue)}
.btn-lime{background:var(--lime);color:var(--bg)}
.btn-lime:hover{background:var(--lime-dim);transform:translateY(-2px)}
.btn-outline{background:transparent;color:var(--blue);border:2px solid var(--blue)}
.btn-outline:hover{background:var(--blue);color:var(--white)}
.btn-outline-lime{background:transparent;color:var(--lime);border:2px solid var(--lime)}
.btn-outline-lime:hover{background:var(--lime);color:var(--bg)}
.btn-ghost{background:rgba(255,255,255,.06);color:var(--text);border:1px solid var(--border)}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:var(--blue)}
.btn-white{background:var(--white);color:var(--bg)}
.btn-white:hover{background:#e2e8f0;transform:translateY(-2px)}
.btn-lg{padding:16px 36px;font-size:17px;border-radius:var(--radius-lg)}
.btn-sm{padding:8px 18px;font-size:13px}
.btn svg{width:18px;height:18px;flex-shrink:0}
.btn-lg svg{width:22px;height:22px}

/* ===== Sections ===== */
.sec{padding:80px 0}
.sec-alt{background:var(--bg2)}
.sec-dark{background:var(--bg3)}
.sec-surface{background:var(--surface)}
.sec-head{text-align:center;margin-bottom:52px}
.sec-badge{display:inline-flex;align-items:center;gap:6px;padding:6px 16px;border-radius:20px;font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.8px;margin-bottom:16px}
.sec-badge-blue{background:rgba(59,130,246,.12);color:var(--blue);border:1px solid rgba(59,130,246,.25)}
.sec-badge-lime{background:rgba(132,204,22,.12);color:var(--lime);border:1px solid rgba(132,204,22,.25)}
.sec-badge-cyan{background:rgba(34,211,238,.12);color:var(--cyan);border:1px solid rgba(34,211,238,.25)}
.sec-badge .dot{width:6px;height:6px;border-radius:50%;background:currentColor;animation:pulse-glow 2s infinite}
.sec-title{font-size:36px;font-weight:800;color:var(--white);line-height:1.25;margin-bottom:14px}
.sec-title-light{color:var(--white)}
.sec-sub{font-size:17px;color:var(--text2);max-width:620px;margin:0 auto;line-height:1.7}

/* ===== Hero ===== */
.hero{padding:100px 0 80px;position:relative;overflow:hidden;background:linear-gradient(160deg,#0a0f1e 0%,#0f1a3a 40%,#0d1e2e 70%,#0a1628 100%)}
.hero::before{content:'';position:absolute;top:-50%;right:-20%;width:600px;height:600px;border-radius:50%;background:radial-gradient(circle,rgba(59,130,246,.12) 0%,transparent 70%);pointer-events:none}
.hero::after{content:'';position:absolute;bottom:-30%;left:-15%;width:500px;height:500px;border-radius:50%;background:radial-gradient(circle,rgba(132,204,22,.08) 0%,transparent 70%);pointer-events:none}
.hero-inner{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;position:relative;z-index:1}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 16px;border-radius:20px;font-size:13px;font-weight:600;background:rgba(59,130,246,.1);color:var(--blue);border:1px solid rgba(59,130,246,.2);margin-bottom:20px}
.hero-badge .dot{width:6px;height:6px;border-radius:50%;background:var(--lime);animation:pulse-glow 2s infinite}
.hero-title{font-size:48px;font-weight:800;color:var(--white);line-height:1.15;margin-bottom:18px}
.hero-title .hl{background:linear-gradient(135deg,var(--blue),var(--cyan));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-title .hl2{background:linear-gradient(135deg,var(--lime),#a3e635);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-desc{font-size:17px;color:var(--text2);line-height:1.8;margin-bottom:28px;max-width:520px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:32px}
.hero-trust{display:flex;align-items:center;gap:20px;font-size:13px;color:var(--text3)}
.hero-trust-item{display:flex;align-items:center;gap:6px}
.hero-trust-item svg{width:16px;height:16px;color:var(--lime)}

/* Hero visual: circuit board / browser frame */
.hero-visual{position:relative}
.hero-frame{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;box-shadow:0 20px 60px rgba(0,0,0,.5),0 0 40px rgba(59,130,246,.1)}
.hf-bar{display:flex;align-items:center;gap:8px;padding:12px 16px;background:var(--bg);border-bottom:1px solid var(--border)}
.hf-dots{display:flex;gap:6px}
.hf-dot{width:10px;height:10px;border-radius:50%}
.hf-dot.r{background:#ef4444}.hf-dot.y{background:#eab308}.hf-dot.g{background:#22c55e}
.hf-url{flex:1;margin-left:12px;padding:6px 14px;border-radius:6px;background:var(--surface);font-size:12px;color:var(--text3);border:1px solid var(--border2)}
.hf-body{padding:24px;display:grid;grid-template-columns:1fr 1fr;gap:14px}
.hf-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:16px;transition:border-color .3s}
.hf-card:hover{border-color:var(--blue)}
.hf-card-ico{width:32px;height:32px;border-radius:8px;display:flex;align-items:center;justify-content:center;margin-bottom:10px;font-size:18px}
.hf-card-ico.blue{background:rgba(59,130,246,.15);color:var(--blue)}
.hf-card-ico.lime{background:rgba(132,204,22,.15);color:var(--lime)}
.hf-card-ico.cyan{background:rgba(34,211,238,.15);color:var(--cyan)}
.hf-card-ico.amber{background:rgba(245,158,11,.15);color:#f59e0b}
.hf-card-lbl{font-size:13px;font-weight:600;color:var(--text);margin-bottom:4px}
.hf-card-val{font-size:11px;color:var(--text3)}

/* ===== Stats Ribbon ===== */
.stats-ribbon{background:linear-gradient(90deg,var(--bg2),var(--bg3),var(--bg2));border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:32px 0}
.stats-row{display:flex;justify-content:space-around;align-items:center;flex-wrap:wrap;gap:20px;max-width:1000px;margin:0 auto}
.stat-item{text-align:center;min-width:140px}
.stat-num{font-size:32px;font-weight:800;background:linear-gradient(135deg,var(--blue),var(--cyan));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.stat-lbl{font-size:13px;color:var(--text3);margin-top:4px}

/* ===== Feature Grid ===== */
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.feat-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px;position:relative;overflow:hidden;transition:all .3s}
.feat-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:var(--blue);opacity:0;transition:opacity .3s}
.feat-card:hover{border-color:var(--blue);transform:translateY(-4px);box-shadow:var(--shadow-blue)}
.feat-card:hover::before{opacity:1}
.feat-card:nth-child(2)::before{background:var(--lime)}
.feat-card:nth-child(2):hover{border-color:var(--lime);box-shadow:0 0 30px rgba(132,204,22,.15)}
.feat-card:nth-child(3)::before{background:var(--cyan)}
.feat-card:nth-child(3):hover{border-color:var(--cyan);box-shadow:0 0 30px rgba(34,211,238,.15)}
.feat-card:nth-child(4)::before{background:#f59e0b}
.feat-card:nth-child(4):hover{border-color:#f59e0b;box-shadow:0 0 30px rgba(245,158,11,.15)}
.feat-card:nth-child(5)::before{background:#a855f7}
.feat-card:nth-child(5):hover{border-color:#a855f7;box-shadow:0 0 30px rgba(168,85,247,.15)}
.feat-card:nth-child(6)::before{background:#f43f5e}
.feat-card:nth-child(6):hover{border-color:#f43f5e;box-shadow:0 0 30px rgba(244,63,94,.15)}
.feat-icon{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.fi-blue{background:rgba(59,130,246,.12);color:var(--blue)}
.fi-lime{background:rgba(132,204,22,.12);color:var(--lime)}
.fi-cyan{background:rgba(34,211,238,.12);color:var(--cyan)}
.fi-amber{background:rgba(245,158,11,.12);color:#f59e0b}
.fi-violet{background:rgba(168,85,247,.12);color:#a855f7}
.fi-rose{background:rgba(244,63,94,.12);color:#f43f5e}
.feat-icon svg{width:24px;height:24px}
.feat-name{font-size:18px;font-weight:700;color:var(--white);margin-bottom:8px}
.feat-desc{font-size:14px;color:var(--text2);line-height:1.7}

/* ===== Platform Grid ===== */
.plat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.plat-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px;text-align:center;transition:all .3s;position:relative}
.plat-card.featured{border-color:var(--blue);background:linear-gradient(180deg,rgba(59,130,246,.08),var(--surface))}
.plat-card.featured::after{content:'推荐';position:absolute;top:12px;right:12px;background:var(--blue);color:#fff;font-size:11px;font-weight:600;padding:3px 10px;border-radius:10px}
.plat-card:hover{border-color:var(--blue);transform:translateY(-4px);box-shadow:var(--shadow-blue)}
.plat-icon{width:48px;height:48px;margin:0 auto 14px;display:flex;align-items:center;justify-content:center;color:var(--blue)}
.plat-icon svg{width:36px;height:36px}
.plat-name{font-size:16px;font-weight:700;color:var(--white);margin-bottom:4px}
.plat-ver{font-size:12px;color:var(--text3);margin-bottom:14px}
.plat-desc{font-size:13px;color:var(--text2);margin-bottom:16px;line-height:1.6}

/* ===== Deep Feature Rows (Zigzag) ===== */
.deep-row{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;margin-bottom:60px}
.deep-row:last-child{margin-bottom:0}
.deep-row.rev{direction:rtl}
.deep-row.rev>*{direction:ltr}
.deep-info{max-width:480px}
.deep-badge{display:inline-flex;padding:5px 14px;border-radius:16px;font-size:12px;font-weight:600;margin-bottom:14px}
.db-blue{background:rgba(59,130,246,.12);color:var(--blue);border:1px solid rgba(59,130,246,.2)}
.db-lime{background:rgba(132,204,22,.12);color:var(--lime);border:1px solid rgba(132,204,22,.2)}
.db-cyan{background:rgba(34,211,238,.12);color:var(--cyan);border:1px solid rgba(34,211,238,.2)}
.db-amber{background:rgba(245,158,11,.12);color:#f59e0b;border:1px solid rgba(245,158,11,.2)}
.deep-title{font-size:28px;font-weight:800;color:var(--white);margin-bottom:12px;line-height:1.3}
.deep-desc{font-size:15px;color:var(--text2);line-height:1.8;margin-bottom:18px}
.deep-list{list-style:none;display:flex;flex-direction:column;gap:8px}
.deep-list li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--text2)}
.deep-list li svg{width:18px;height:18px;color:var(--lime);flex-shrink:0;margin-top:3px}
.deep-visual{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px;display:flex;align-items:center;justify-content:center;min-height:280px}
.deep-visual svg{width:100%;max-width:320px;height:auto}

/* ===== Reviews ===== */
.rev-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.rev-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px;transition:all .3s}
.rev-card:hover{border-color:var(--blue);transform:translateY(-3px)}
.rev-top{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:var(--white);flex-shrink:0}
.av-blue{background:linear-gradient(135deg,#3b82f6,#2563eb)}
.av-lime{background:linear-gradient(135deg,#84cc16,#65a30d)}
.av-cyan{background:linear-gradient(135deg,#22d3ee,#06b6d4)}
.av-amber{background:linear-gradient(135deg,#f59e0b,#d97706)}
.av-violet{background:linear-gradient(135deg,#a855f7,#7c3aed)}
.av-rose{background:linear-gradient(135deg,#f43f5e,#e11d48)}
.rev-info{flex:1}
.rev-name{font-size:14px;font-weight:700;color:var(--white)}
.rev-role{font-size:12px;color:var(--text3)}
.rev-stars{color:#eab308;font-size:13px;margin-bottom:10px;display:flex;gap:2px}
.rev-stars svg{width:14px;height:14px}
.rev-text{font-size:14px;color:var(--text2);line-height:1.7}

/* ===== Comparison Table ===== */
.cmp-wrap{overflow-x:auto;border-radius:var(--radius-lg);border:1px solid var(--border)}
.cmp-table{width:100%;border-collapse:collapse;min-width:600px}
.cmp-table th,.cmp-table td{padding:14px 18px;text-align:left;font-size:14px;border-bottom:1px solid var(--border)}
.cmp-table th{background:var(--surface);color:var(--text);font-weight:600;position:sticky;top:0}
.cmp-table td{color:var(--text2)}
.cmp-table tr:last-child td{border-bottom:none}
.cmp-hl{background:rgba(59,130,246,.06)!important}
.cmp-table .yes{color:var(--lime);font-weight:600}
.cmp-table .no{color:#ef4444;font-weight:600}
.cmp-table .part{color:#f59e0b;font-weight:600}

/* ===== FAQ ===== */
.faq-list{max-width:780px;margin:0 auto;display:flex;flex-direction:column;gap:10px}
.faq-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:border-color .3s}
.faq-item:hover,.faq-item.open{border-color:var(--blue)}
.faq-q{display:flex;align-items:center;justify-content:space-between;padding:18px 22px;cursor:pointer;font-size:15px;font-weight:600;color:var(--white);transition:background .2s}
.faq-q:hover{background:rgba(59,130,246,.04)}
.faq-chevron{width:20px;height:20px;color:var(--text3);transition:transform .3s;flex-shrink:0}
.faq-item.open .faq-chevron{transform:rotate(180deg);color:var(--blue)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-item.open .faq-a{max-height:500px}
.faq-a-inner{padding:0 22px 18px;font-size:14px;color:var(--text2);line-height:1.8}

/* ===== CTA Banner ===== */
.cta-banner{background:linear-gradient(135deg,#0f1a3a,#162044,#1a1a4a);border:1px solid var(--border);border-radius:var(--radius-xl);padding:60px 40px;text-align:center;position:relative;overflow:hidden}
.cta-banner::before{content:'';position:absolute;top:-40%;right:-20%;width:400px;height:400px;border-radius:50%;background:radial-gradient(circle,rgba(59,130,246,.1) 0%,transparent 60%);pointer-events:none}
.cta-title{font-size:32px;font-weight:800;color:var(--white);margin-bottom:12px}
.cta-desc{font-size:16px;color:var(--text2);margin-bottom:28px;max-width:500px;margin-left:auto;margin-right:auto}
.cta-actions{display:flex;justify-content:center;gap:14px;flex-wrap:wrap}

/* ===== Download Hero ===== */
.dl-hero{padding:100px 0 60px;background:linear-gradient(160deg,#0a0f1e,#0f1a3a,#0d1e2e);position:relative;text-align:center}
.dl-hero-tag{display:inline-flex;align-items:center;gap:6px;padding:6px 16px;border-radius:20px;font-size:12px;font-weight:600;background:rgba(132,204,22,.1);color:var(--lime);border:1px solid rgba(132,204,22,.2);margin-bottom:18px}
.dl-hero-title{font-size:40px;font-weight:800;color:var(--white);margin-bottom:12px}
.dl-hero-sub{font-size:17px;color:var(--text2);max-width:560px;margin:0 auto}

/* ===== DL Main Box ===== */
.dl-main{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-xl);padding:40px;max-width:700px;margin:40px auto 0;box-shadow:var(--shadow),var(--shadow-blue)}
.dl-main-head{display:flex;align-items:center;gap:18px;margin-bottom:24px}
.dl-main-icon{width:56px;height:56px;border-radius:14px;background:rgba(59,130,246,.12);display:flex;align-items:center;justify-content:center;color:var(--blue)}
.dl-main-icon svg{width:32px;height:32px}
.dl-main-info{text-align:left}
.dl-main-name{font-size:22px;font-weight:700;color:var(--white)}
.dl-main-meta{font-size:13px;color:var(--text3);display:flex;gap:14px;margin-top:4px}
.dl-specs{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:24px}
.dl-spec{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:14px;text-align:center}
.dl-spec-label{font-size:11px;color:var(--text3);text-transform:uppercase;letter-spacing:.5px;margin-bottom:4px}
.dl-spec-val{font-size:14px;font-weight:600;color:var(--white)}
.dl-sec-badge{display:flex;align-items:center;justify-content:center;gap:8px;padding:12px;border-radius:var(--radius);background:rgba(132,204,22,.06);border:1px solid rgba(132,204,22,.15);font-size:13px;color:var(--lime);margin-top:18px}
.dl-sec-badge svg{width:16px;height:16px;flex-shrink:0}

/* ===== Other Platforms Grid ===== */
.op-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;max-width:900px;margin:0 auto}
.op-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px;text-align:center;transition:all .3s}
.op-card:hover{border-color:var(--blue);transform:translateY(-3px)}
.op-icon{width:44px;height:44px;margin:0 auto 12px;color:var(--text2)}
.op-icon svg{width:36px;height:36px}
.op-name{font-size:16px;font-weight:700;color:var(--white);margin-bottom:3px}
.op-ver{font-size:12px;color:var(--text3);margin-bottom:6px}
.op-desc{font-size:13px;color:var(--text2);margin-bottom:16px;line-height:1.6}

/* ===== Guide Steps ===== */
.guide-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.guide-col-title{font-size:20px;font-weight:700;color:var(--white);margin-bottom:24px;display:flex;align-items:center;gap:10px}
.guide-col-title svg{width:22px;height:22px}
.guide-steps{display:flex;flex-direction:column;gap:18px}
.gstep{display:flex;gap:16px;align-items:flex-start}
.gstep-num{width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;color:var(--white);flex-shrink:0}
.gstep-num.blue{background:var(--blue)}
.gstep-num.lime{background:var(--lime);color:var(--bg)}
.gstep-body{flex:1}
.gstep-title{font-size:15px;font-weight:700;color:var(--white);margin-bottom:4px}
.gstep-desc{font-size:13px;color:var(--text2);line-height:1.7}

/* ===== System Requirements ===== */
.req-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.req-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:22px;text-align:center;transition:border-color .3s}
.req-card:hover{border-color:var(--blue)}
.req-icon{width:36px;height:36px;margin:0 auto 10px;color:var(--blue)}
.req-icon svg{width:28px;height:28px}
.req-title{font-size:13px;color:var(--text3);margin-bottom:4px}
.req-val{font-size:15px;font-weight:700;color:var(--white)}

/* ===== Version Timeline ===== */
.ver-list{max-width:700px;margin:0 auto;display:flex;flex-direction:column;gap:0}
.ver-item{display:flex;gap:20px;padding:20px 0;position:relative}
.ver-dot-col{display:flex;flex-direction:column;align-items:center;width:24px;flex-shrink:0}
.ver-dot{width:14px;height:14px;border-radius:50%;border:3px solid var(--blue);background:var(--bg);flex-shrink:0;position:relative;z-index:1}
.ver-dot.lime{border-color:var(--lime)}
.ver-dot.amber{border-color:#f59e0b}
.ver-line{flex:1;width:2px;background:var(--border);margin-top:4px}
.ver-item:last-child .ver-line{display:none}
.ver-body{flex:1}
.ver-head{display:flex;align-items:center;gap:10px;margin-bottom:6px;flex-wrap:wrap}
.ver-num{font-size:16px;font-weight:700;color:var(--white)}
.ver-tag{padding:3px 10px;border-radius:10px;font-size:11px;font-weight:600}
.ver-tag.stable{background:rgba(132,204,22,.12);color:var(--lime);border:1px solid rgba(132,204,22,.2)}
.ver-tag.lts{background:rgba(59,130,246,.12);color:var(--blue);border:1px solid rgba(59,130,246,.2)}
.ver-tag.beta{background:rgba(245,158,11,.12);color:#f59e0b;border:1px solid rgba(245,158,11,.2)}
.ver-date{font-size:12px;color:var(--text3)}
.ver-desc{font-size:13px;color:var(--text2);line-height:1.7;margin-top:4px}

/* ===== Security Banner ===== */
.sec-banner{display:flex;align-items:center;gap:16px;background:linear-gradient(135deg,rgba(132,204,22,.06),rgba(59,130,246,.06));border:1px solid rgba(132,204,22,.15);border-radius:var(--radius-lg);padding:24px 32px;max-width:700px;margin:0 auto}
.sec-banner-ico{width:44px;height:44px;border-radius:12px;background:rgba(132,204,22,.12);display:flex;align-items:center;justify-content:center;flex-shrink:0;color:var(--lime)}
.sec-banner-ico svg{width:24px;height:24px}
.sec-banner-text{flex:1}
.sec-banner-title{font-size:15px;font-weight:700;color:var(--white);margin-bottom:4px}
.sec-banner-desc{font-size:13px;color:var(--text2);line-height:1.6}

/* ===== Article / zh-cn ===== */
.art-hero{padding:100px 0 50px;background:linear-gradient(160deg,#0a0f1e,#0f1a3a);text-align:center}
.art-hero-title{font-size:38px;font-weight:800;color:var(--white);margin-bottom:12px}
.art-hero-sub{font-size:16px;color:var(--text2);max-width:600px;margin:0 auto 24px}
.kw-strip{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin-top:20px}
.kw{padding:5px 14px;border-radius:16px;font-size:12px;font-weight:500;background:rgba(59,130,246,.08);color:var(--blue);border:1px solid rgba(59,130,246,.15);transition:all .2s}
.kw:hover{background:rgba(59,130,246,.15);border-color:var(--blue)}

.art-layout{display:grid;grid-template-columns:1fr 320px;gap:36px;align-items:start}
.art-body{font-size:15px;color:var(--text2);line-height:1.9}
.art-body h2{font-size:24px;font-weight:700;color:var(--white);margin:36px 0 14px;padding-left:14px;border-left:3px solid var(--blue)}
.art-body h3{font-size:18px;font-weight:600;color:var(--white);margin:24px 0 10px}
.art-body p{margin-bottom:16px}
.art-body ul,.art-body ol{padding-left:22px;margin-bottom:16px}
.art-body li{margin-bottom:6px}
.art-body table{width:100%;border-collapse:collapse;margin:20px 0;border-radius:var(--radius);overflow:hidden;border:1px solid var(--border)}
.art-body table th,.art-body table td{padding:12px 16px;text-align:left;font-size:13px;border-bottom:1px solid var(--border)}
.art-body table th{background:var(--surface);color:var(--text);font-weight:600}

.inline-cta{background:linear-gradient(135deg,rgba(59,130,246,.08),rgba(132,204,22,.08));border:1px solid rgba(59,130,246,.2);border-radius:var(--radius-lg);padding:28px;margin:28px 0;text-align:center}
.inline-cta-title{font-size:18px;font-weight:700;color:var(--white);margin-bottom:8px}
.inline-cta-desc{font-size:14px;color:var(--text2);margin-bottom:16px}

.tips-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin:20px 0}
.tip-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:18px}
.tip-card h4{font-size:14px;font-weight:700;color:var(--white);margin-bottom:6px}
.tip-card p{font-size:13px;color:var(--text2);margin:0;line-height:1.6}

/* ===== Sidebar ===== */
.sidebar{position:sticky;top:80px;display:flex;flex-direction:column;gap:20px}
.sbox{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:22px}
.sbox-title{font-size:15px;font-weight:700;color:var(--white);margin-bottom:14px}
.sdl-btn{display:block;width:100%;padding:10px;border-radius:var(--radius);text-align:center;font-size:13px;font-weight:600;margin-bottom:8px;transition:all .2s;border:none;cursor:pointer}
.sdl-btn:last-child{margin-bottom:0}
.sdl-btn.primary{background:var(--blue);color:var(--white)}
.sdl-btn.primary:hover{background:var(--blue-dim)}
.sdl-btn.secondary{background:var(--bg2);color:var(--text);border:1px solid var(--border)}
.sdl-btn.secondary:hover{border-color:var(--blue)}
.stoc{list-style:none;display:flex;flex-direction:column;gap:6px}
.stoc li a{font-size:13px;color:var(--text2);display:block;padding:5px 10px;border-radius:6px;border-left:2px solid transparent;transition:all .2s}
.stoc li a:hover{color:var(--blue);background:rgba(59,130,246,.04);border-left-color:var(--blue)}
.sstat{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.sstat-item{text-align:center;background:var(--bg2);border-radius:var(--radius);padding:12px}
.sstat-num{font-size:20px;font-weight:800;color:var(--blue)}
.sstat-lbl{font-size:11px;color:var(--text3);margin-top:2px}
.side-security{display:flex;align-items:center;gap:8px;padding:12px;border-radius:var(--radius);background:rgba(132,204,22,.06);border:1px solid rgba(132,204,22,.12);font-size:12px;color:var(--lime)}
.side-security svg{width:16px;height:16px;flex-shrink:0}

/* ===== Footer ===== */
.site-footer{background:var(--bg);border-top:1px solid var(--border);padding:32px 0}
.footer-inner{max-width:1180px;margin:0 auto;padding:0 20px;text-align:center}
.footer-brand{font-size:16px;font-weight:700;color:var(--white);margin-bottom:12px}
.footer-security{display:flex;align-items:center;justify-content:center;gap:8px;font-size:13px;color:var(--lime);margin-bottom:8px}
.footer-security svg{width:16px;height:16px}
.footer-note{font-size:12px;color:var(--text3);line-height:1.6}

/* ===== Responsive ===== */
@media(max-width:1024px){
  .hero-inner{grid-template-columns:1fr;text-align:center}
  .hero-desc{margin:0 auto 28px}
  .hero-actions{justify-content:center}
  .hero-trust{justify-content:center}
  .hero-visual{max-width:480px;margin:0 auto}
  .feat-grid{grid-template-columns:repeat(2,1fr)}
  .plat-grid{grid-template-columns:repeat(2,1fr)}
  .deep-row,.deep-row.rev{grid-template-columns:1fr;direction:ltr;gap:30px}
  .deep-row.rev>*{direction:ltr}
  .rev-grid{grid-template-columns:repeat(2,1fr)}
  .guide-grid{grid-template-columns:1fr}
  .req-grid{grid-template-columns:repeat(2,1fr)}
  .art-layout{grid-template-columns:1fr}
  .sidebar{position:static}
  .op-grid{grid-template-columns:repeat(2,1fr)}
  .dl-specs{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:640px){
  .topbar-inner{flex-direction:column;gap:10px}
  .nav-list{gap:4px}
  .hero{padding:80px 0 50px}
  .hero-title{font-size:32px}
  .sec-title{font-size:28px}
  .sec{padding:50px 0}
  .feat-grid,.plat-grid,.rev-grid{grid-template-columns:1fr}
  .stats-row{flex-direction:column;gap:16px}
  .hf-body{grid-template-columns:1fr}
  .dl-main{padding:24px}
  .dl-specs{grid-template-columns:1fr}
  .op-grid{grid-template-columns:1fr}
  .req-grid{grid-template-columns:1fr}
  .tips-grid{grid-template-columns:1fr}
  .cta-banner{padding:40px 20px}
  .cta-title{font-size:24px}
}