/* Crystal Marine / Oceanic Flow Theme */
:root {
  --ocean-dark: #071e3d;
  --ocean-mid: #0c3d69;
  --blue: #0284c7;
  --blue-light: #38bdf8;
  --cyan: #06b6d4;
  --coral: #f97316;
  --coral-dark: #ea580c;
  --surface: #f0f9ff;
  --surface2: #e0f2fe;
  --white: #ffffff;
  --text: #1e293b;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --border: #e2e8f0;
  --card-shadow: 0 4px 24px rgba(2,132,199,0.10);
  --card-shadow-h: 0 8px 40px rgba(2,132,199,0.18);
  --radius: 14px;
  --radius-sm: 8px;
}
*,*::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',Roboto,Helvetica,Arial,sans-serif;color:var(--text);background:#fff;line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;outline:none}

@keyframes spin{from{transform:rotate(0deg)}to{transform:rotate(360deg)}}
@keyframes fadeUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}
@keyframes wave{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
@keyframes ticker{0%{transform:translateX(0)}100%{transform:translateX(-50%)}}
@keyframes glow{0%,100%{box-shadow:0 0 20px rgba(6,182,212,0.3)}50%{box-shadow:0 0 40px rgba(6,182,212,0.6)}}

/* ─── LAYOUT ─────────────────────────────────── */
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}
.sec{padding:80px 0}
.sec-alt{background:var(--surface)}
.sec-ocean{background:var(--ocean-dark)}
.sec-ocean2{background:var(--ocean-mid)}
.sec-surface2{background:var(--surface2)}
.sec-head{text-align:center;margin-bottom:52px}
.sec-tag{display:inline-block;padding:4px 14px;border-radius:999px;font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;margin-bottom:14px;background:rgba(2,132,199,.1);color:var(--blue)}
.sec-tag-coral{background:rgba(249,115,22,.1);color:var(--coral)}
.sec-tag-cyan{background:rgba(6,182,212,.1);color:var(--cyan)}
.sec-tag-white{background:rgba(255,255,255,.15);color:#fff}
.sec-title{font-size:clamp(26px,4vw,40px);font-weight:800;line-height:1.18;letter-spacing:-.02em;color:var(--text)}
.sec-title.light{color:#fff}
.sec-sub{font-size:17px;color:var(--text-muted);margin-top:12px;max-width:620px;margin-left:auto;margin-right:auto}
.sec-sub.light{color:rgba(255,255,255,.75)}

/* ─── NAV ─────────────────────────────────────── */
.site-nav{position:sticky;top:0;z-index:100;background:rgba(7,30,61,.92);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid rgba(255,255,255,.08)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px;max-width:1180px;margin:0 auto;padding:0 24px}
.nav-brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;color:#fff}
.nav-brand svg{flex-shrink:0}
.nav-brand span{color:var(--cyan)}
.nav-menu{display:flex;align-items:center;gap:6px}
.nav-link{padding:7px 18px;border-radius:999px;font-size:14px;font-weight:600;color:rgba(255,255,255,.7);transition:all .2s}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.08)}
.nav-link.on{color:#fff;background:var(--blue)}
.nav-dl{padding:8px 22px;border-radius:999px;background:var(--coral);color:#fff;font-size:14px;font-weight:700;transition:all .2s;margin-left:8px}
.nav-dl:hover{background:var(--coral-dark);transform:translateY(-1px)}

/* ─── BTNS ─────────────────────────────────────── */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 28px;border-radius:999px;font-size:15px;font-weight:700;transition:all .25s;cursor:pointer;border:none;line-height:1}
.btn-blue{background:var(--blue);color:#fff}
.btn-blue:hover{background:#0369a1;transform:translateY(-2px);box-shadow:0 6px 24px rgba(2,132,199,.35)}
.btn-coral{background:var(--coral);color:#fff}
.btn-coral:hover{background:var(--coral-dark);transform:translateY(-2px);box-shadow:0 6px 24px rgba(249,115,22,.35)}
.btn-cyan{background:var(--cyan);color:#fff}
.btn-cyan:hover{background:#0891b2;transform:translateY(-2px)}
.btn-outline{background:transparent;color:var(--blue);border:2px solid var(--blue)}
.btn-outline:hover{background:var(--blue);color:#fff}
.btn-outline-w{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.5)}
.btn-outline-w:hover{background:rgba(255,255,255,.1);border-color:#fff}
.btn-white{background:#fff;color:var(--blue)}
.btn-white:hover{background:var(--surface);transform:translateY(-2px)}
.btn-lg{padding:16px 36px;font-size:16px}
.btn-sm{padding:9px 20px;font-size:13px}

/* ─── HERO ─────────────────────────────────────── */
.hero{background:linear-gradient(135deg,var(--ocean-dark) 0%,#0c3d69 50%,#0a4080 100%);min-height:92vh;display:flex;align-items:center;position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 80% 60% at 70% 50%,rgba(6,182,212,.18),transparent)}
.hero::after{content:'';position:absolute;bottom:-2px;left:0;right:0;height:80px;background:linear-gradient(transparent,var(--surface) 90%);pointer-events:none}
.hero-inner{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;max-width:1180px;margin:0 auto;padding:100px 24px 120px;position:relative;z-index:1}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 16px;border-radius:999px;background:rgba(6,182,212,.15);border:1px solid rgba(6,182,212,.3);color:var(--cyan);font-size:13px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;margin-bottom:22px}
.hero-eyebrow-dot{width:6px;height:6px;border-radius:50%;background:var(--cyan);animation:glow 2s ease-in-out infinite}
.hero-title{font-size:clamp(32px,5vw,58px);font-weight:900;line-height:1.1;letter-spacing:-.03em;color:#fff;margin-bottom:22px}
.hero-title .hl{color:var(--cyan)}
.hero-title .hl2{color:var(--coral)}
.hero-desc{font-size:18px;color:rgba(255,255,255,.75);line-height:1.7;margin-bottom:36px;max-width:480px}
.hero-btns{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:40px}
.hero-trust{display:flex;flex-wrap:wrap;gap:20px}
.hero-trust-item{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.65);font-weight:600}
.hero-trust-item svg{color:var(--cyan);flex-shrink:0}

/* Hero Visual - Browser Mockup */
.hero-visual{position:relative;animation:wave 4s ease-in-out infinite}
.browser-mock{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.15);border-radius:16px;overflow:hidden;backdrop-filter:blur(8px)}
.bm-bar{background:rgba(255,255,255,.08);padding:12px 16px;display:flex;align-items:center;gap:10px;border-bottom:1px solid rgba(255,255,255,.08)}
.bm-dots{display:flex;gap:6px}
.bm-dot{width:10px;height:10px;border-radius:50%}
.bm-dot.r{background:#ff5f57}
.bm-dot.y{background:#febc2e}
.bm-dot.g{background:#28c840}
.bm-url{flex:1;background:rgba(255,255,255,.1);border-radius:999px;padding:5px 14px;font-size:12px;color:rgba(255,255,255,.5);display:flex;align-items:center;gap:6px}
.bm-url-dot{width:8px;height:8px;border-radius:50%;background:var(--cyan)}
.bm-body{padding:20px}
.bm-tabs{display:flex;gap:8px;margin-bottom:16px}
.bm-tab{padding:6px 14px;border-radius:999px;font-size:12px;font-weight:600;color:rgba(255,255,255,.5);background:rgba(255,255,255,.05);cursor:pointer;transition:.2s}
.bm-tab.act{background:var(--blue);color:#fff}
.bm-cards{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.bm-card{background:rgba(255,255,255,.06);border-radius:10px;padding:14px;border:1px solid rgba(255,255,255,.08)}
.bm-card-ico{width:32px;height:32px;border-radius:8px;margin-bottom:8px;display:flex;align-items:center;justify-content:center}
.bm-card-ico.blue{background:rgba(2,132,199,.25)}
.bm-card-ico.cyan{background:rgba(6,182,212,.25)}
.bm-card-ico.coral{background:rgba(249,115,22,.25)}
.bm-card-ico.teal{background:rgba(20,184,166,.25)}
.bm-card-lbl{font-size:11px;color:rgba(255,255,255,.7);font-weight:700}
.bm-card-val{font-size:18px;font-weight:800;color:#fff}
.bm-search{margin-top:14px;background:rgba(255,255,255,.08);border-radius:999px;padding:10px 16px;display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.4)}

/* ─── TICKER ─────────────────────────────────── */
.ticker-wrap{background:var(--blue);overflow:hidden;padding:14px 0}
.ticker-row{display:flex;animation:ticker 20s linear infinite}
.ticker-item{display:flex;align-items:center;gap:8px;padding:0 40px;white-space:nowrap;font-size:14px;font-weight:700;color:#fff}
.ticker-sep{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.5)}

/* ─── PILLARS ─────────────────────────────────── */
.pillar-row{display:grid;grid-template-columns:1fr 1fr;gap:72px;align-items:center;padding:60px 0}
.pillar-row:not(:last-child){border-bottom:1px solid var(--border)}
.pillar-row.rev .pillar-info{order:2}
.pillar-row.rev .pillar-visual{order:1}
.pillar-badge{display:inline-block;padding:4px 14px;border-radius:999px;font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.07em;margin-bottom:18px}
.pb-blue{background:rgba(2,132,199,.1);color:var(--blue)}
.pb-cyan{background:rgba(6,182,212,.1);color:var(--cyan)}
.pb-coral{background:rgba(249,115,22,.1);color:var(--coral)}
.pillar-title{font-size:clamp(22px,3.5vw,34px);font-weight:800;line-height:1.2;margin-bottom:16px;letter-spacing:-.02em}
.pillar-desc{font-size:16px;color:var(--text-muted);line-height:1.75;margin-bottom:24px}
.pillar-list{display:flex;flex-direction:column;gap:12px}
.pillar-list-item{display:flex;align-items:flex-start;gap:12px;font-size:15px;color:var(--text)}
.pli-dot{width:20px;height:20px;border-radius:50%;flex-shrink:0;display:flex;align-items:center;justify-content:center;margin-top:2px}
.pli-dot.blue{background:rgba(2,132,199,.15);color:var(--blue)}
.pli-dot.cyan{background:rgba(6,182,212,.15);color:var(--cyan)}
.pli-dot.coral{background:rgba(249,115,22,.15);color:var(--coral)}
.pillar-visual{border-radius:var(--radius);overflow:hidden}

/* Pillar SVG panel */
.pv-panel{background:linear-gradient(135deg,var(--surface) 0%,var(--surface2) 100%);border-radius:16px;padding:32px;border:1px solid var(--border);position:relative}
.pv-panel.dark{background:linear-gradient(135deg,#0f2a4a 0%,#0c3d69 100%);border-color:rgba(255,255,255,.1)}
.pv-row{display:flex;gap:16px;margin-bottom:16px}
.pv-chip{padding:8px 16px;border-radius:999px;font-size:13px;font-weight:700}
.pvc-blue{background:var(--blue);color:#fff}
.pvc-cyan{background:var(--cyan);color:#fff}
.pvc-outline{background:transparent;border:1.5px solid var(--border);color:var(--text-muted)}
.pv-bar-wrap{margin-bottom:12px}
.pv-bar-label{display:flex;justify-content:space-between;font-size:12px;font-weight:700;color:var(--text-muted);margin-bottom:5px}
.pv-bar-track{height:8px;background:var(--border);border-radius:999px;overflow:hidden}
.pv-bar-fill{height:100%;border-radius:999px;transition:width .5s}
.pvb-blue{background:var(--blue)}
.pvb-cyan{background:var(--cyan)}
.pvb-coral{background:var(--coral)}
.pvb-gray{background:#94a3b8}
.pv-stat-row{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:12px}
.pv-stat{background:rgba(255,255,255,.7);border-radius:10px;padding:14px;text-align:center;border:1px solid var(--border)}
.pv-stat.dark{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.1)}
.pv-stat-num{font-size:22px;font-weight:800;color:var(--blue)}
.pv-stat-num.cyan{color:var(--cyan)}
.pv-stat-num.coral{color:var(--coral)}
.pv-stat-lbl{font-size:11px;color:var(--text-muted);font-weight:600}
.pv-stat.dark .pv-stat-lbl{color:rgba(255,255,255,.6)}
.pv-shield{display:flex;align-items:center;gap:16px;background:rgba(2,132,199,.08);border-radius:12px;padding:16px;border:1px solid rgba(2,132,199,.2);margin-bottom:14px}
.pv-shield-icon{width:44px;height:44px;background:var(--blue);border-radius:10px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.pv-shield-title{font-weight:800;font-size:14px;color:var(--text)}
.pv-shield-desc{font-size:12px;color:var(--text-muted)}

/* ─── FEATURE TABS ─────────────────────────────── */
.tab-section{background:var(--ocean-dark);padding:80px 0}
.tab-nav{display:flex;justify-content:center;gap:8px;flex-wrap:wrap;margin-bottom:44px}
.tab-btn{padding:10px 24px;border-radius:999px;font-size:14px;font-weight:700;color:rgba(255,255,255,.6);background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.1);cursor:pointer;transition:all .2s}
.tab-btn:hover{color:#fff;border-color:rgba(255,255,255,.2)}
.tab-btn.active{background:var(--cyan);color:var(--ocean-dark);border-color:var(--cyan)}
.tab-panel{display:none;animation:fadeUp .3s ease}
.tab-panel.active{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:start}
.tp-icon{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;margin-bottom:20px}
.tp-icon.blue{background:rgba(2,132,199,.2);color:var(--blue-light)}
.tp-icon.cyan{background:rgba(6,182,212,.2);color:var(--cyan)}
.tp-icon.coral{background:rgba(249,115,22,.2);color:var(--coral)}
.tp-icon.teal{background:rgba(20,184,166,.2);color:#2dd4bf}
.tp-title{font-size:26px;font-weight:800;color:#fff;margin-bottom:14px}
.tp-desc{font-size:15px;color:rgba(255,255,255,.7);line-height:1.75;margin-bottom:24px}
.tp-feats{display:flex;flex-direction:column;gap:14px}
.tp-feat{display:flex;align-items:flex-start;gap:12px}
.tp-feat-dot{width:22px;height:22px;border-radius:50%;background:rgba(6,182,212,.2);flex-shrink:0;display:flex;align-items:center;justify-content:center;margin-top:2px;color:var(--cyan)}
.tp-feat-body strong{display:block;font-size:14px;font-weight:700;color:#fff;margin-bottom:3px}
.tp-feat-body span{font-size:13px;color:rgba(255,255,255,.6);line-height:1.5}
.tp-visual{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);border-radius:16px;padding:28px}
.tp-items{display:flex;flex-direction:column;gap:12px}
.tp-item{display:flex;align-items:center;gap:14px;background:rgba(255,255,255,.05);border-radius:10px;padding:14px;border:1px solid rgba(255,255,255,.06);transition:.2s}
.tp-item:hover{background:rgba(255,255,255,.09);border-color:rgba(6,182,212,.3)}
.tp-item-ico{width:36px;height:36px;border-radius:8px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.tp-item-title{font-size:13px;font-weight:700;color:#fff}
.tp-item-sub{font-size:12px;color:rgba(255,255,255,.5)}
.tp-item-badge{margin-left:auto;padding:3px 10px;border-radius:999px;font-size:11px;font-weight:700}
.tib-blue{background:rgba(2,132,199,.2);color:var(--blue-light)}
.tib-cyan{background:rgba(6,182,212,.2);color:var(--cyan)}
.tib-coral{background:rgba(249,115,22,.2);color:var(--coral)}
.tib-green{background:rgba(34,197,94,.2);color:#4ade80}

/* ─── PLATFORM GRID ─────────────────────────────── */
.plat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.plat-card{background:#fff;border-radius:var(--radius);padding:28px 24px;border:1px solid var(--border);transition:all .25s;text-align:center}
.plat-card:hover{transform:translateY(-4px);box-shadow:var(--card-shadow-h);border-color:var(--blue-light)}
.plat-card.featured{background:linear-gradient(135deg,var(--ocean-dark),var(--ocean-mid));border-color:var(--cyan);position:relative;overflow:hidden}
.plat-card.featured::before{content:'推荐';position:absolute;top:12px;right:-20px;background:var(--coral);color:#fff;font-size:11px;font-weight:800;padding:3px 28px;transform:rotate(40deg);transform-origin:center}
.plat-icon{width:52px;height:52px;margin:0 auto 16px;display:flex;align-items:center;justify-content:center}
.plat-name{font-size:16px;font-weight:800;margin-bottom:6px;color:var(--text)}
.plat-card.featured .plat-name{color:#fff}
.plat-ver{font-size:12px;color:var(--text-muted);margin-bottom:6px}
.plat-card.featured .plat-ver{color:rgba(255,255,255,.6)}
.plat-req{font-size:12px;color:var(--text-light);margin-bottom:18px}
.plat-card.featured .plat-req{color:rgba(255,255,255,.5)}
.plat-btn{width:100%}

/* ─── TESTIMONIALS ─────────────────────────────── */
.test-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.test-card{background:#fff;border-radius:var(--radius);padding:28px;border:1px solid var(--border);transition:all .25s}
.test-card:hover{transform:translateY(-3px);box-shadow:var(--card-shadow-h)}
.test-stars{display:flex;gap:3px;margin-bottom:16px}
.star{color:#fbbf24;font-size:16px}
.test-quote{font-size:15px;color:var(--text);line-height:1.7;margin-bottom:20px;font-style:italic}
.test-quote::before{content:'\201C';font-size:32px;color:var(--blue);line-height:0;vertical-align:-12px;margin-right:4px;font-style:normal}
.test-footer{display:flex;align-items:center;gap:12px;border-top:1px solid var(--border);padding-top:16px}
.test-avatar{width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:14px;flex-shrink:0}
.av-blue{background:rgba(2,132,199,.15);color:var(--blue)}
.av-cyan{background:rgba(6,182,212,.15);color:var(--cyan)}
.av-coral{background:rgba(249,115,22,.15);color:var(--coral)}
.av-green{background:rgba(34,197,94,.15);color:#16a34a}
.av-violet{background:rgba(139,92,246,.15);color:#7c3aed}
.av-amber{background:rgba(245,158,11,.15);color:#d97706}
.test-name{font-weight:700;font-size:14px;color:var(--text)}
.test-role{font-size:12px;color:var(--text-muted)}

/* ─── BENCHMARK ─────────────────────────────────── */
.bench-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.bench-table{display:flex;flex-direction:column;gap:16px}
.bench-row{display:flex;flex-direction:column;gap:6px}
.bench-labels{display:flex;justify-content:space-between;font-size:13px;font-weight:700}
.bench-name{color:#fff}
.bench-score{color:rgba(255,255,255,.7)}
.bench-track{height:10px;background:rgba(255,255,255,.08);border-radius:999px;overflow:hidden}
.bench-fill{height:100%;border-radius:999px;transition:width 1s ease}
.bf-blue{background:linear-gradient(90deg,var(--blue),var(--cyan))}
.bf-gray{background:rgba(255,255,255,.2)}
.bf-orange{background:rgba(249,115,22,.6)}
.bf-dark{background:rgba(255,255,255,.12)}
.bench-info{background:rgba(255,255,255,.04);border-radius:16px;padding:32px;border:1px solid rgba(255,255,255,.08)}
.bench-info-title{font-size:20px;font-weight:800;color:#fff;margin-bottom:14px}
.bench-info-desc{font-size:14px;color:rgba(255,255,255,.65);line-height:1.7;margin-bottom:20px}
.bench-stats{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.bs-item{background:rgba(255,255,255,.05);border-radius:10px;padding:14px;border:1px solid rgba(255,255,255,.08)}
.bs-num{font-size:26px;font-weight:800;color:var(--cyan)}
.bs-lbl{font-size:12px;color:rgba(255,255,255,.6);margin-top:3px}

/* ─── COMPARISON TABLE ──────────────────────────── */
.cmp-wrap{overflow-x:auto}
.cmp-table{width:100%;border-collapse:collapse;font-size:14px}
.cmp-table th{padding:16px 20px;font-weight:800;font-size:13px;text-align:left;border-bottom:2px solid var(--border);background:var(--surface);color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em}
.cmp-table th:first-child{border-radius:var(--radius-sm) 0 0 0}
.cmp-table th:last-child{border-radius:0 var(--radius-sm) 0 0}
.cmp-hl{background:linear-gradient(135deg,rgba(2,132,199,.08),rgba(6,182,212,.08))!important}
.cmp-hl th,.cmp-hl td{color:var(--blue)!important;font-weight:700}
.cmp-table td{padding:14px 20px;border-bottom:1px solid var(--border);color:var(--text)}
.cmp-table tr:hover td{background:var(--surface)}
.yes{color:#16a34a;font-weight:700}
.no{color:#dc2626;font-weight:700}
.part{color:#d97706;font-weight:700}

/* ─── FAQ ────────────────────────────────────────── */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;align-items:start}
.faq-item{background:#fff;border-radius:var(--radius-sm);border:1px solid var(--border);overflow:hidden;transition:all .2s}
.faq-item.open{border-color:var(--blue);box-shadow:0 0 0 3px rgba(2,132,199,.1)}
.faq-q{padding:18px 22px;display:flex;align-items:center;justify-content:space-between;gap:16px;cursor:pointer;font-weight:700;font-size:15px;color:var(--text)}
.faq-item.open .faq-q{color:var(--blue)}
.faq-chevron{width:20px;height:20px;flex-shrink:0;transition:transform .25s;color:var(--text-muted)}
.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(--text-muted);line-height:1.75;border-top:1px solid var(--border)}

/* ─── CTA BANNER ─────────────────────────────────── */
.cta-banner{background:linear-gradient(135deg,var(--ocean-dark) 0%,var(--ocean-mid) 60%,#0a4a8c 100%);padding:80px 0;text-align:center;position:relative;overflow:hidden}
.cta-banner::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 80% at 50% 100%,rgba(6,182,212,.2),transparent);pointer-events:none}
.cta-title{font-size:clamp(26px,4vw,42px);font-weight:900;color:#fff;margin-bottom:14px;letter-spacing:-.02em}
.cta-sub{font-size:17px;color:rgba(255,255,255,.75);margin-bottom:36px;max-width:540px;margin-left:auto;margin-right:auto}
.cta-btns{display:flex;justify-content:center;gap:14px;flex-wrap:wrap}

/* ─── FOOTER ─────────────────────────────────────── */
.site-footer{background:#040f1e;padding:40px 0 32px;border-top:1px solid rgba(255,255,255,.06)}
.footer-inner{max-width:1180px;margin:0 auto;padding:0 24px;text-align:center}
.footer-brand{display:flex;align-items:center;justify-content:center;gap:10px;font-weight:800;font-size:16px;color:#fff;margin-bottom:20px}
.footer-brand span{color:var(--cyan)}
.footer-security{display:inline-flex;align-items:center;gap:8px;background:rgba(22,163,74,.1);border:1px solid rgba(22,163,74,.2);border-radius:999px;padding:8px 20px;font-size:13px;color:#4ade80;font-weight:600;margin-bottom:16px}
.footer-note{font-size:12px;color:rgba(255,255,255,.35);line-height:1.7}

/* ─── DOWNLOAD PAGE ──────────────────────────────── */
.dl-hero{background:linear-gradient(135deg,var(--ocean-dark) 0%,var(--ocean-mid) 100%);padding:80px 0 60px;text-align:center;position:relative;overflow:hidden}
.dl-hero::after{content:'';position:absolute;bottom:-1px;left:0;right:0;height:60px;background:linear-gradient(transparent,var(--surface))}
.dl-hero-tag{display:inline-block;padding:5px 16px;border-radius:999px;background:rgba(6,182,212,.15);border:1px solid rgba(6,182,212,.3);color:var(--cyan);font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.07em;margin-bottom:18px}
.dl-hero-title{font-size:clamp(28px,4.5vw,48px);font-weight:900;color:#fff;margin-bottom:12px;letter-spacing:-.02em}
.dl-hero-sub{font-size:17px;color:rgba(255,255,255,.7);max-width:520px;margin:0 auto}

.dl-win-card{background:#fff;border-radius:var(--radius);padding:36px;border:2px solid var(--blue);box-shadow:0 0 0 4px rgba(2,132,199,.1);max-width:640px;margin:0 auto;position:relative;z-index:1}
.dl-win-top{display:flex;align-items:center;gap:20px;margin-bottom:28px;padding-bottom:24px;border-bottom:1px solid var(--border)}
.dl-win-icon{width:56px;height:56px;border-radius:14px;background:linear-gradient(135deg,var(--blue),var(--cyan));display:flex;align-items:center;justify-content:center;flex-shrink:0}
.dl-win-name{font-size:20px;font-weight:800;color:var(--text)}
.dl-win-meta{font-size:13px;color:var(--text-muted)}
.dl-specs{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:28px}
.dl-spec{background:var(--surface);border-radius:var(--radius-sm);padding:12px 16px}
.dl-spec-label{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted);margin-bottom:3px}
.dl-spec-val{font-size:14px;font-weight:700;color:var(--text)}
.dl-sec-badge{display:flex;align-items:center;gap:8px;background:rgba(22,163,74,.08);border-radius:8px;padding:12px 16px;margin-bottom:24px;font-size:13px;font-weight:600;color:#16a34a;border:1px solid rgba(22,163,74,.15)}

.op-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:40px}
.op-card{background:#fff;border-radius:var(--radius);padding:28px 22px;border:1px solid var(--border);text-align:center;transition:all .25s}
.op-card:hover{transform:translateY(-4px);box-shadow:var(--card-shadow-h)}
.op-icon{width:48px;height:48px;margin:0 auto 14px;display:flex;align-items:center;justify-content:center}
.op-name{font-size:16px;font-weight:800;margin-bottom:4px;color:var(--text)}
.op-ver{font-size:12px;color:var(--text-muted);margin-bottom:4px}
.op-req{font-size:12px;color:var(--text-light);margin-bottom:10px}
.op-steps{margin:14px 0;text-align:left}
.op-steps li{font-size:12px;color:var(--text-muted);padding:4px 0;padding-left:18px;position:relative}
.op-steps li::before{content:counter(step);counter-increment:step;position:absolute;left:0;width:14px;height:14px;background:var(--blue);color:#fff;border-radius:50%;font-size:9px;font-weight:800;display:flex;align-items:center;justify-content:center;top:5px}
.op-steps{counter-reset:step}

.guide-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px}
.guide-col{background:#fff;border-radius:var(--radius);padding:32px;border:1px solid var(--border)}
.guide-col-title{font-size:18px;font-weight:800;margin-bottom:24px;display:flex;align-items:center;gap:10px}
.guide-steps{display:flex;flex-direction:column;gap:18px}
.gstep{display:flex;gap:16px}
.gstep-num{width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:800;flex-shrink:0;margin-top:2px}
.gsn-blue{background:var(--blue);color:#fff}
.gsn-cyan{background:var(--cyan);color:var(--ocean-dark)}
.gstep-title{font-size:14px;font-weight:800;color:var(--text);margin-bottom:4px}
.gstep-desc{font-size:13px;color:var(--text-muted);line-height:1.6}

.req-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.req-card{background:#fff;border-radius:var(--radius-sm);padding:20px;border:1px solid var(--border);text-align:center}
.req-icon{width:40px;height:40px;margin:0 auto 12px;display:flex;align-items:center;justify-content:center;border-radius:10px;background:rgba(2,132,199,.1)}
.req-title{font-size:13px;font-weight:800;color:var(--text);margin-bottom:6px}
.req-val{font-size:12px;color:var(--text-muted);line-height:1.6}

.ver-list{display:flex;flex-direction:column;gap:0}
.ver-item{display:flex;gap:24px;padding:24px 0;border-bottom:1px solid var(--border)}
.ver-item:last-child{border-bottom:none}
.ver-dot-col{display:flex;flex-direction:column;align-items:center;gap:0;padding-top:4px}
.ver-dot{width:14px;height:14px;border-radius:50%;flex-shrink:0}
.vd-blue{background:var(--blue)}
.vd-cyan{background:var(--cyan)}
.vd-coral{background:var(--coral)}
.vd-amber{background:#f59e0b}
.vd-green{background:#22c55e}
.ver-line{flex:1;width:2px;background:var(--border);margin-top:4px}
.ver-body{flex:1}
.ver-head{display:flex;align-items:center;gap:10px;margin-bottom:8px;flex-wrap:wrap}
.ver-num{font-size:16px;font-weight:800;color:var(--text)}
.ver-tag{padding:3px 10px;border-radius:999px;font-size:11px;font-weight:700}
.vt-stable{background:rgba(22,163,74,.1);color:#16a34a}
.vt-beta{background:rgba(249,115,22,.1);color:var(--coral)}
.vt-lts{background:rgba(2,132,199,.1);color:var(--blue)}
.ver-date{font-size:12px;color:var(--text-light);margin-left:auto}
.ver-desc{font-size:14px;color:var(--text-muted);line-height:1.65}

.sec-banner{display:flex;align-items:center;gap:20px;background:linear-gradient(135deg,rgba(2,132,199,.08),rgba(6,182,212,.06));border-radius:var(--radius);padding:28px 32px;border:1px solid rgba(2,132,199,.15)}
.sec-banner-ico{width:48px;height:48px;border-radius:12px;background:linear-gradient(135deg,var(--blue),var(--cyan));display:flex;align-items:center;justify-content:center;flex-shrink:0}
.sec-banner-title{font-size:16px;font-weight:800;color:var(--text);margin-bottom:4px}
.sec-banner-desc{font-size:14px;color:var(--text-muted);line-height:1.6}

/* ─── ARTICLE PAGE ───────────────────────────────── */
.art-hero{background:linear-gradient(135deg,var(--ocean-dark) 0%,var(--ocean-mid) 100%);padding:70px 0 60px;position:relative;overflow:hidden}
.art-hero::after{content:'';position:absolute;bottom:-1px;left:0;right:0;height:60px;background:linear-gradient(transparent,#fff)}
.art-hero-inner{max-width:820px;margin:0 auto;padding:0 24px;text-align:center;position:relative;z-index:1}
.art-hero-tag{display:inline-block;padding:5px 16px;border-radius:999px;background:rgba(6,182,212,.15);border:1px solid rgba(6,182,212,.3);color:var(--cyan);font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.07em;margin-bottom:18px}
.art-hero-title{font-size:clamp(26px,4vw,44px);font-weight:900;color:#fff;margin-bottom:14px;letter-spacing:-.02em}
.art-hero-sub{font-size:16px;color:rgba(255,255,255,.7);line-height:1.7}
.kw-strip{display:flex;flex-wrap:wrap;gap:8px;margin:24px 0 0}
.kw{padding:5px 14px;border-radius:999px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.15);font-size:12px;color:rgba(255,255,255,.8);font-weight:600}

.art-layout{display:grid;grid-template-columns:1fr 320px;gap:40px;align-items:start;max-width:1180px;margin:0 auto;padding:60px 24px}
.art-body{min-width:0}
.art-body h2{font-size:22px;font-weight:800;color:var(--text);margin:32px 0 14px;padding-bottom:10px;border-bottom:2px solid var(--border);scroll-margin-top:80px}
.art-body h2:first-child{margin-top:0}
.art-body h3{font-size:17px;font-weight:700;color:var(--text);margin:24px 0 10px}
.art-body p{font-size:15px;color:var(--text-muted);line-height:1.85;margin-bottom:16px}
.art-body ul,.art-body ol{padding-left:0;margin-bottom:16px;display:flex;flex-direction:column;gap:8px}
.art-body ul li,.art-body ol li{font-size:15px;color:var(--text-muted);line-height:1.7;padding-left:22px;position:relative}
.art-body ul li::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--blue);position:absolute;left:4px;top:9px}
.art-body ol{counter-reset:olist}
.art-body ol li{counter-increment:olist}
.art-body ol li::before{content:counter(olist);position:absolute;left:0;width:18px;height:18px;background:var(--blue);color:#fff;border-radius:50%;font-size:10px;font-weight:800;display:flex;align-items:center;justify-content:center;top:3px}
.art-body strong{color:var(--text);font-weight:700}
.inline-cta{background:linear-gradient(135deg,var(--ocean-dark),var(--ocean-mid));border-radius:var(--radius);padding:28px 32px;margin:28px 0;color:#fff}
.inline-cta-title{font-size:16px;font-weight:800;margin-bottom:6px}
.inline-cta-desc{font-size:13px;color:rgba(255,255,255,.7);margin-bottom:16px}
.cmp-table-wrap{overflow-x:auto;margin:20px 0}

/* Sidebar */
.sidebar{position:sticky;top:84px}
.sbox{background:#fff;border-radius:var(--radius);padding:24px;border:1px solid var(--border);margin-bottom:16px}
.sbox-title{font-size:14px;font-weight:800;color:var(--text);margin-bottom:14px;padding-bottom:10px;border-bottom:1px solid var(--border);text-transform:uppercase;letter-spacing:.05em}
.sdl-btn{display:flex;align-items:center;gap:10px;padding:11px 16px;border-radius:var(--radius-sm);font-size:13px;font-weight:700;margin-bottom:8px;cursor:pointer;border:none;width:100%;transition:all .2s}
.sdl-btn.primary{background:var(--blue);color:#fff}
.sdl-btn.primary:hover{background:#0369a1}
.sdl-btn.secondary{background:var(--surface);color:var(--text);border:1px solid var(--border)}
.sdl-btn.secondary:hover{background:var(--surface2)}
.stoc{display:flex;flex-direction:column;gap:4px}
.stoc a{font-size:13px;color:var(--text-muted);padding:5px 0 5px 12px;border-left:2px solid var(--border);transition:all .2s}
.stoc a:hover{color:var(--blue);border-left-color:var(--blue);padding-left:16px}
.sstat{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.sstat-item{background:var(--surface);border-radius:var(--radius-sm);padding:12px;text-align:center}
.sstat-num{font-size:18px;font-weight:800;color:var(--blue)}
.sstat-lbl{font-size:11px;color:var(--text-muted)}
.side-security{background:rgba(22,163,74,.08);border-radius:var(--radius-sm);border:1px solid rgba(22,163,74,.15);padding:14px 16px}
.side-security p{font-size:12px;color:#16a34a;font-weight:600;line-height:1.6}

/* Tips grid */
.tips-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:16px 0}
.tip-card{background:var(--surface);border-radius:var(--radius-sm);padding:16px;border:1px solid var(--border)}
.tip-card strong{display:block;font-size:13px;font-weight:800;color:var(--text);margin-bottom:6px}
.tip-card span{font-size:12px;color:var(--text-muted);line-height:1.55}

/* ─── RESPONSIVE ─────────────────────────────────── */
@media(max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:40px;padding:80px 24px 100px}
  .hero-visual{max-width:500px}
  .pillar-row{grid-template-columns:1fr;gap:40px}
  .pillar-row.rev .pillar-info,.pillar-row.rev .pillar-visual{order:unset}
  .plat-grid{grid-template-columns:repeat(2,1fr)}
  .test-grid{grid-template-columns:1fr 1fr}
  .bench-grid{grid-template-columns:1fr}
  .guide-grid{grid-template-columns:1fr}
  .req-grid{grid-template-columns:repeat(2,1fr)}
  .art-layout{grid-template-columns:1fr;padding:40px 24px}
  .sidebar{position:static}
  .tips-grid{grid-template-columns:1fr 1fr}
  .tab-panel.active{grid-template-columns:1fr;gap:32px}
  .faq-grid{grid-template-columns:1fr}
  .op-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:640px){
  .sec{padding:56px 0}
  .nav-menu .nav-link:not(.nav-dl){display:none}
  .plat-grid{grid-template-columns:1fr}
  .test-grid{grid-template-columns:1fr}
  .dl-specs{grid-template-columns:1fr}
  .req-grid{grid-template-columns:1fr 1fr}
  .op-grid{grid-template-columns:1fr}
  .bm-cards{grid-template-columns:1fr 1fr}
  .tips-grid{grid-template-columns:1fr}
  .sstat{grid-template-columns:1fr 1fr}
  .bench-stats{grid-template-columns:1fr 1fr}
  .hero-btns{flex-direction:column}
  .cta-btns{flex-direction:column;align-items:center}
}