/* ===== WPS1 — Oceanic Blueprint Theme ===== */
/* Deep navy base + teal/cyan accents + seafoam highlights */

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --navy:#0d1b2a;
  --navy-mid:#1b2838;
  --navy-light:#243447;
  --teal:#0ea5e9;
  --teal-dark:#0284c7;
  --seafoam:#2dd4bf;
  --seafoam-dark:#14b8a6;
  --white:#f0f9ff;
  --gray:#94a3b8;
  --gray-light:#cbd5e1;
  --surface:#162032;
  --border:rgba(14,165,233,.18);
  --radius:10px;
  --radius-lg:18px;
  --shadow:0 4px 24px rgba(0,0,0,.35);
  --font:'Segoe UI','PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;
}
@keyframes spin{from{transform:rotate(0deg)}to{transform:rotate(360deg)}}
@keyframes fadeUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.5}}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}

html{scroll-behavior:smooth;font-size:16px}
body{font-family:var(--font);background:var(--navy);color:var(--white);line-height:1.7;overflow-x:hidden}
a{color:var(--teal);text-decoration:none;transition:color .2s}
a:hover{color:var(--seafoam)}
img{max-width:100%;display:block}

/* ===== Top Navigation ===== */
.topnav{position:sticky;top:0;z-index:999;background:rgba(13,27,42,.92);backdrop-filter:blur(14px);border-bottom:1px solid var(--border)}
.topnav-inner{max-width:1200px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:0 24px;height:60px}
.brand{display:flex;align-items:center;gap:10px;font-size:1.15rem;font-weight:700;color:var(--white);letter-spacing:.5px}
.brand svg{flex-shrink:0}
.nav-links{display:flex;gap:6px;list-style:none}
.nav-links a{display:block;padding:8px 18px;border-radius:8px;font-size:.92rem;font-weight:500;color:var(--gray-light);transition:all .2s}
.nav-links a:hover{color:var(--white);background:var(--navy-light)}
.nav-links a.on{color:var(--teal);background:rgba(14,165,233,.12);font-weight:600}
.mob-toggle{display:none;background:none;border:none;color:var(--white);cursor:pointer}

/* ===== Container / Section ===== */
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.sec{padding:80px 0}
.sec-dark{background:var(--navy)}
.sec-alt{background:var(--navy-mid)}
.sec-gradient{background:linear-gradient(135deg,var(--navy) 0%,#0f2744 50%,var(--navy-mid) 100%)}
.sec-head{text-align:center;margin-bottom:48px}
.sec-badge{display:inline-block;padding:4px 14px;border-radius:20px;font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:1.5px;background:rgba(14,165,233,.12);color:var(--teal);border:1px solid var(--border);margin-bottom:14px}
.sec-title{font-size:2.2rem;font-weight:800;line-height:1.25;margin-bottom:12px}
.sec-title span{color:var(--teal)}
.sec-sub{font-size:1.05rem;color:var(--gray);max-width:640px;margin:0 auto}

/* ===== Buttons ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 28px;border-radius:8px;font-size:.95rem;font-weight:600;border:none;cursor:pointer;transition:all .25s;font-family:var(--font)}
.btn:disabled{opacity:.6;cursor:not-allowed}
.btn-primary{background:linear-gradient(135deg,var(--teal),var(--teal-dark));color:#fff;box-shadow:0 4px 20px rgba(14,165,233,.35)}
.btn-primary:hover{box-shadow:0 6px 28px rgba(14,165,233,.5);transform:translateY(-2px)}
.btn-seafoam{background:linear-gradient(135deg,var(--seafoam),var(--seafoam-dark));color:var(--navy);box-shadow:0 4px 20px rgba(45,212,191,.3)}
.btn-seafoam:hover{box-shadow:0 6px 28px rgba(45,212,191,.45);transform:translateY(-2px)}
.btn-outline{background:transparent;color:var(--teal);border:2px solid var(--teal)}
.btn-outline:hover{background:var(--teal);color:#fff}
.btn-ghost{background:rgba(255,255,255,.06);color:var(--white);border:1px solid rgba(255,255,255,.12)}
.btn-ghost:hover{background:rgba(255,255,255,.12)}
.btn-lg{padding:16px 36px;font-size:1.05rem;border-radius:10px}
.btn-sm{padding:8px 18px;font-size:.85rem}

/* ===== HERO — Diagonal Split ===== */
.hero{position:relative;padding:100px 0 80px;overflow:hidden;background:linear-gradient(160deg,var(--navy) 0%,#0f2744 40%,#132f4c 100%)}
.hero::before{content:'';position:absolute;top:-200px;right:-200px;width:600px;height:600px;background:radial-gradient(circle,rgba(14,165,233,.15) 0%,transparent 70%);border-radius:50%}
.hero::after{content:'';position:absolute;bottom:-150px;left:-100px;width:400px;height:400px;background:radial-gradient(circle,rgba(45,212,191,.1) 0%,transparent 70%);border-radius:50%}
.hero-inner{position:relative;z-index:2;max-width:1200px;margin:0 auto;padding:0 24px;display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.hero-text{animation:fadeUp .7s ease-out}
.hero-badge{display:inline-flex;align-items:center;gap:6px;padding:6px 16px;border-radius:20px;font-size:.78rem;font-weight:600;background:rgba(14,165,233,.1);color:var(--teal);border:1px solid var(--border);margin-bottom:20px}
.hero-title{font-size:3rem;font-weight:800;line-height:1.15;margin-bottom:18px}
.hero-title em{font-style:normal;color:var(--teal)}
.hero-desc{font-size:1.1rem;color:var(--gray-light);margin-bottom:32px;line-height:1.8}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:28px}
.hero-meta{display:flex;gap:28px;font-size:.82rem;color:var(--gray)}
.hero-meta strong{color:var(--white);font-weight:700;font-size:1rem}
.hero-visual{position:relative;display:flex;justify-content:center;animation:fadeUp .9s ease-out}
.hero-mockup{width:100%;max-width:480px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow)}
.mockup-bar{display:flex;gap:6px;margin-bottom:16px}
.mockup-dot{width:10px;height:10px;border-radius:50%}
.mockup-dot:nth-child(1){background:#ef4444}
.mockup-dot:nth-child(2){background:#f59e0b}
.mockup-dot:nth-child(3){background:#22c55e}
.mockup-lines{display:flex;flex-direction:column;gap:10px}
.mockup-line{height:12px;border-radius:6px;background:rgba(14,165,233,.08)}
.mockup-line:nth-child(1){width:80%}
.mockup-line:nth-child(2){width:100%;height:48px;background:linear-gradient(90deg,rgba(14,165,233,.12),rgba(45,212,191,.08));border-radius:8px}
.mockup-line:nth-child(3){width:60%}
.mockup-line:nth-child(4){width:90%;height:32px;background:rgba(45,212,191,.08)}
.mockup-line:nth-child(5){width:45%}
.float-badge{position:absolute;padding:8px 16px;border-radius:10px;background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow);font-size:.8rem;font-weight:600;color:var(--teal);animation:float 4s ease-in-out infinite}
.float-badge.fb-1{top:10%;right:-30px;animation-delay:0s}
.float-badge.fb-2{bottom:20%;left:-20px;animation-delay:1.5s}

/* ===== Bento Feature Grid ===== */
.bento{display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:auto auto;gap:20px}
.bento-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px;transition:all .3s;position:relative;overflow:hidden}
.bento-card:hover{border-color:var(--teal);transform:translateY(-4px);box-shadow:0 8px 32px rgba(14,165,233,.15)}
.bento-card.span-2{grid-column:span 2}
.bento-ico{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;margin-bottom:16px;background:rgba(14,165,233,.1);color:var(--teal)}
.bento-card:nth-child(even) .bento-ico{background:rgba(45,212,191,.1);color:var(--seafoam)}
.bento-card h3{font-size:1.15rem;font-weight:700;margin-bottom:8px}
.bento-card p{font-size:.9rem;color:var(--gray);line-height:1.7}

/* ===== Scrolling Ticker ===== */
.ticker{padding:24px 0;overflow:hidden;border-top:1px solid var(--border);border-bottom:1px solid var(--border);background:var(--navy-mid)}
.ticker-inner{display:flex;gap:48px;justify-content:center;flex-wrap:wrap;width:100%}
.ticker-item{display:flex;align-items:center;gap:10px;font-size:.9rem;color:var(--gray);white-space:nowrap;font-weight:500}
.ticker-item svg{color:var(--teal);flex-shrink:0}

/* ===== Platform Cards (Horizontal Row) ===== */
.plat-row{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 20px;text-align:center;transition:all .3s}
.plat-card:hover{border-color:var(--teal);transform:translateY(-4px)}
.plat-card.featured{background:linear-gradient(135deg,rgba(14,165,233,.08),rgba(45,212,191,.05));border-color:var(--teal)}
.plat-ico{width:52px;height:52px;margin:0 auto 14px;border-radius:14px;display:flex;align-items:center;justify-content:center;background:rgba(14,165,233,.1);color:var(--teal)}
.plat-card h3{font-size:1rem;font-weight:700;margin-bottom:6px}
.plat-card p{font-size:.82rem;color:var(--gray);margin-bottom:16px;line-height:1.6}

/* ===== Stats Band ===== */
.stats-band{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center;padding:48px 0}
.stat-block{padding:24px}
.stat-num{font-size:2.4rem;font-weight:800;background:linear-gradient(135deg,var(--teal),var(--seafoam));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.stat-label{font-size:.85rem;color:var(--gray);margin-top:4px}

/* ===== Testimonials — Stacked Cards ===== */
.testi-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.testi-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px;transition:all .3s}
.testi-card:hover{border-color:var(--teal);transform:translateY(-4px)}
.testi-stars{display:flex;gap:2px;color:#f59e0b;margin-bottom:12px}
.testi-text{font-size:.9rem;color:var(--gray-light);line-height:1.8;margin-bottom:16px;font-style:italic}
.testi-author{font-size:.85rem;font-weight:600;color:var(--white)}
.testi-role{font-size:.78rem;color:var(--gray)}

/* ===== Comparison Table ===== */
.cmp-wrap{overflow-x:auto}
.cmp-table{width:100%;border-collapse:collapse;min-width:600px}
.cmp-table th,.cmp-table td{padding:14px 18px;text-align:left;border-bottom:1px solid var(--border);font-size:.9rem}
.cmp-table th{background:var(--surface);color:var(--gray);font-weight:600;font-size:.8rem;text-transform:uppercase;letter-spacing:1px}
.cmp-table td{color:var(--gray-light)}
.cmp-table tr:hover td{background:rgba(14,165,233,.04)}
.cmp-hl{background:rgba(14,165,233,.06)!important}
.tick{color:var(--seafoam);font-weight:700}
.cross{color:#f87171;font-weight:700}

/* ===== FAQ Accordion ===== */
.faq-list{max-width:800px;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 .2s}
.faq-item:hover,.faq-item.open{border-color:var(--teal)}
.faq-q{display:flex;align-items:center;justify-content:space-between;padding:18px 22px;cursor:pointer;font-size:.95rem;font-weight:600;color:var(--white);background:none;border:none;width:100%;text-align:left;font-family:var(--font)}
.faq-q svg{transition:transform .3s;flex-shrink:0;color:var(--teal)}
.faq-item.open .faq-q svg{transform:rotate(180deg)}
.faq-a{padding:0 22px 18px;font-size:.88rem;color:var(--gray);line-height:1.8;display:none}
.faq-item.open .faq-a{display:block}

/* ===== CTA Banner ===== */
.cta-banner{text-align:center;padding:64px 24px;background:linear-gradient(135deg,rgba(14,165,233,.08),rgba(45,212,191,.06));border:1px solid var(--border);border-radius:var(--radius-lg);margin:0 auto;max-width:900px}
.cta-banner h2{font-size:2rem;font-weight:800;margin-bottom:12px}
.cta-banner p{color:var(--gray);margin-bottom:28px;font-size:1rem}

/* ===== Download Hero ===== */
.dl-hero{padding:100px 0 60px;background:linear-gradient(160deg,var(--navy),#0f2744)}
.dl-hero .container{text-align:center}
.dl-hero h1{font-size:2.6rem;font-weight:800;margin-bottom:14px}
.dl-hero h1 em{font-style:normal;color:var(--teal)}
.dl-hero p{color:var(--gray);font-size:1.05rem;max-width:600px;margin:0 auto 32px}
.dl-badges{display:flex;justify-content:center;gap:18px;flex-wrap:wrap;margin-bottom:16px}
.dl-badge{padding:6px 16px;border-radius:20px;font-size:.78rem;font-weight:600;background:rgba(14,165,233,.1);color:var(--teal);border:1px solid var(--border)}

/* ===== Download Main Box ===== */
.dl-main{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:40px;max-width:560px;margin:0 auto;box-shadow:var(--shadow)}
.dl-main h2{font-size:1.4rem;font-weight:700;margin-bottom:8px}
.dl-main p{font-size:.88rem;color:var(--gray);margin-bottom:20px}
.dl-info{display:flex;gap:24px;margin-bottom:20px;font-size:.82rem;color:var(--gray)}
.dl-info span{display:flex;align-items:center;gap:6px}

/* ===== Guide Steps ===== */
.steps-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:18px;counter-reset:step}
.step-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px 20px;position:relative;counter-increment:step;transition:all .3s}
.step-card:hover{border-color:var(--teal)}
.step-card::before{content:counter(step);position:absolute;top:16px;right:16px;width:30px;height:30px;border-radius:50%;background:rgba(14,165,233,.12);color:var(--teal);display:flex;align-items:center;justify-content:center;font-size:.82rem;font-weight:700}
.step-card h4{font-size:.95rem;font-weight:700;margin-bottom:6px}
.step-card p{font-size:.82rem;color:var(--gray);line-height:1.6}

/* ===== System Requirements ===== */
.req-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px}
.req-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:22px}
.req-card h4{font-size:.9rem;font-weight:600;color:var(--teal);margin-bottom:8px}
.req-card p{font-size:.85rem;color:var(--gray);line-height:1.7}

/* ===== Version Timeline ===== */
.ver-list{max-width:700px;margin:0 auto;display:flex;flex-direction:column;gap:16px}
.ver-item{display:flex;gap:18px;align-items:flex-start}
.ver-dot{width:14px;height:14px;border-radius:50%;background:var(--teal);margin-top:6px;flex-shrink:0;position:relative}
.ver-dot::after{content:'';position:absolute;top:14px;left:50%;transform:translateX(-50%);width:2px;height:calc(100% + 16px);background:var(--border)}
.ver-item:last-child .ver-dot::after{display:none}
.ver-body h4{font-size:.95rem;font-weight:700;margin-bottom:2px}
.ver-tag{display:inline-block;padding:2px 10px;border-radius:12px;font-size:.7rem;font-weight:600;background:rgba(14,165,233,.1);color:var(--teal);margin-left:8px}
.ver-body p{font-size:.82rem;color:var(--gray);line-height:1.6}

/* ===== Article Layout (zh-cn) ===== */
.article-hero{padding:100px 0 50px;text-align:center;background:linear-gradient(160deg,var(--navy),#0f2744)}
.article-hero h1{font-size:2.4rem;font-weight:800;margin-bottom:12px}
.article-hero h1 em{font-style:normal;color:var(--teal)}
.article-hero p{color:var(--gray);font-size:1rem;max-width:620px;margin:0 auto}
.tag-cloud{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin-top:24px}
.tag-pill{padding:5px 14px;border-radius:20px;font-size:.78rem;background:rgba(14,165,233,.08);color:var(--teal);border:1px solid var(--border);font-weight:500}
.article-wrap{display:grid;grid-template-columns:1fr 300px;gap:40px;align-items:flex-start}
.article-body{line-height:1.9;color:var(--gray-light)}
.article-body h2{font-size:1.5rem;font-weight:700;color:var(--white);margin:40px 0 16px;padding-bottom:10px;border-bottom:2px solid var(--border)}
.article-body h3{font-size:1.15rem;font-weight:600;color:var(--white);margin:28px 0 10px}
.article-body p{margin-bottom:16px;font-size:.92rem}
.article-body ul{margin:0 0 16px 20px;font-size:.92rem}
.article-body li{margin-bottom:6px}
.sidebar{position:sticky;top:80px}
.sidebar-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px;margin-bottom:18px}
.sidebar-card h3{font-size:1rem;font-weight:700;margin-bottom:14px;color:var(--white)}
.sidebar-card p{font-size:.82rem;color:var(--gray);margin-bottom:12px;line-height:1.6}
.toc{list-style:none;padding:0;margin:0}
.toc li{margin-bottom:8px}
.toc a{font-size:.85rem;color:var(--gray);transition:color .2s;display:block;padding:4px 0;border-left:2px solid var(--border);padding-left:12px}
.toc a:hover,.toc a.active{color:var(--teal);border-left-color:var(--teal)}
.article-cta{text-align:center;padding:48px 24px;background:linear-gradient(135deg,rgba(14,165,233,.08),rgba(45,212,191,.06));border:1px solid var(--border);border-radius:var(--radius-lg);margin-top:40px}
.article-cta h2{font-size:1.6rem;font-weight:700;margin-bottom:10px}
.article-cta p{color:var(--gray);margin-bottom:20px}

/* ===== Footer ===== */
.site-footer{padding:40px 0;border-top:1px solid var(--border);text-align:center}
.security-line{display:flex;align-items:center;justify-content:center;gap:8px;font-size:.82rem;color:var(--seafoam);margin-bottom:10px;font-weight:500}
.footer-copy{font-size:.78rem;color:var(--gray);line-height:1.7}

/* ===== Responsive ===== */
@media(max-width:1024px){
  .hero-inner{grid-template-columns:1fr;text-align:center}
  .hero-actions{justify-content:center}
  .hero-meta{justify-content:center}
  .hero-visual{margin-top:40px}
  .bento{grid-template-columns:1fr 1fr}
  .bento-card.span-2{grid-column:span 1}
  .plat-row{grid-template-columns:1fr 1fr}
  .stats-band{grid-template-columns:1fr 1fr}
  .testi-grid{grid-template-columns:1fr 1fr}
  .article-wrap{grid-template-columns:1fr}
  .sidebar{position:static}
}
@media(max-width:640px){
  .topnav-inner{padding:0 16px}
  .nav-links{display:none;position:absolute;top:60px;left:0;right:0;background:var(--navy);flex-direction:column;padding:16px;border-bottom:1px solid var(--border)}
  .nav-links.show{display:flex}
  .mob-toggle{display:block}
  .hero{padding:70px 0 50px}
  .hero-title{font-size:2rem}
  .sec{padding:50px 0}
  .sec-title{font-size:1.6rem}
  .bento{grid-template-columns:1fr}
  .plat-row{grid-template-columns:1fr}
  .stats-band{grid-template-columns:1fr 1fr}
  .testi-grid{grid-template-columns:1fr}
  .steps-row{grid-template-columns:1fr}
  .dl-hero h1{font-size:1.8rem}
  .article-hero h1{font-size:1.8rem}
}