/* 蓝鲸云枢 · BlueWhale Global 官网样式 —— 紫色系 */
:root{
  --ink:#1b1430;--ink-2:#4a4163;--muted:#6b6385;
  --bg:#fbfaff;--bg-2:#f3f0ff;--card:#ffffff;--line:#e6e0f7;
  --p-900:#2a0f5c;--p-800:#3b1784;--p-700:#5b21b6;--p-600:#6d28d9;--p-500:#7c3aed;--p-400:#9b6bff;--p-200:#ddd0ff;--p-100:#efe8ff;
  --accent:#d946ef;--ok:#0f8a5f;
  --radius:18px;--radius-sm:12px;
  --shadow:0 1px 2px rgba(42,15,92,.06),0 12px 32px -12px rgba(42,15,92,.18);
  --max:1180px;
  --font:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --display:"Outfit","Noto Sans SC","PingFang SC",sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--p-600);text-decoration:none}
a:hover{color:var(--p-800)}
h1,h2,h3,h4{font-family:var(--display);line-height:1.25;margin:0 0 .5em;letter-spacing:-.01em}
h1{font-size:clamp(34px,5vw,58px);font-weight:800}
h2{font-size:clamp(26px,3.4vw,40px);font-weight:700}
h3{font-size:20px;font-weight:700}
p{margin:0 0 1em}
.shell{max-width:var(--max);margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-999px}.skip:focus{left:16px;top:12px;z-index:99;background:#fff;padding:8px 12px;border-radius:8px}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(251,250,255,.86);backdrop-filter:saturate(1.4) blur(14px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;gap:24px;height:68px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:700;font-family:var(--display);white-space:nowrap}
.brand img{width:36px;height:36px;border-radius:10px}
.brand small{display:block;font-size:11px;color:var(--muted);font-weight:500;letter-spacing:.06em}
.nav{display:flex;gap:4px;margin-left:auto;flex-wrap:wrap}
.nav a{color:var(--ink-2);padding:8px 12px;border-radius:10px;font-size:15px}
.nav a:hover,.nav a[aria-current="page"]{background:var(--p-100);color:var(--p-700)}
.header-cta{display:flex;gap:10px}
.menu-toggle{display:none;margin-left:auto;background:none;border:1px solid var(--line);border-radius:10px;width:44px;height:44px;color:var(--ink)}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:10px 20px;border-radius:12px;font-weight:600;font-size:15px;border:1px solid transparent;transition:transform .15s,box-shadow .15s,background .15s}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--p-600);color:#fff;box-shadow:0 8px 20px -8px rgba(109,40,217,.6)}
.btn-primary:hover{background:var(--p-700);color:#fff}
.btn-ghost{background:#fff;color:var(--p-700);border-color:var(--p-200)}
.btn-ghost:hover{border-color:var(--p-400);color:var(--p-800)}
.btn-light{background:#fff;color:var(--p-800)}
.btn-lg{min-height:52px;padding:12px 26px;font-size:16px}

/* Hero */
.hero{position:relative;overflow:hidden;background:radial-gradient(1200px 520px at 85% -10%,#e3d5ff 0,rgba(227,213,255,0) 60%),radial-gradient(800px 420px at -10% 20%,#f4e3ff 0,rgba(244,227,255,0) 60%);padding:80px 0 72px}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--p-700);background:var(--p-100);border:1px solid var(--p-200);padding:6px 12px;border-radius:999px;margin-bottom:18px}
.hero h1 .grad{background:linear-gradient(90deg,var(--p-600),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:19px;color:var(--ink-2);max-width:600px}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin:28px 0 22px}
.hero-points{display:flex;flex-wrap:wrap;gap:8px 18px;padding:0;margin:0;list-style:none;color:var(--ink-2);font-size:14px}
.hero-points li::before{content:"✓";color:var(--p-600);font-weight:700;margin-right:6px}

/* Product mock */
.mock{background:#fff;border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow);overflow:hidden}
.mock-bar{display:flex;gap:6px;padding:12px 14px;border-bottom:1px solid var(--line);background:#faf8ff}
.mock-bar i{width:10px;height:10px;border-radius:50%;background:#e2dbf5}
.mock-body{display:grid;grid-template-columns:64px 170px 1fr;min-height:360px}
.mock-rail{background:var(--p-900);display:flex;flex-direction:column;align-items:center;gap:10px;padding:14px 0}
.mock-rail span{width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:10px;font-weight:700;color:#d9ccff;background:rgba(255,255,255,.06)}
.mock-rail span.on{background:var(--p-500);color:#fff}
.mock-list{border-right:1px solid var(--line);padding:12px 10px;display:flex;flex-direction:column;gap:6px;font-size:12px}
.mock-list b{font-size:11px;color:var(--muted);font-weight:600;margin:4px 6px}
.mock-item{display:flex;align-items:center;gap:8px;padding:7px 8px;border-radius:10px;color:var(--ink-2)}
.mock-item.on{background:var(--p-100);color:var(--p-800);font-weight:600}
.chip{width:22px;height:22px;border-radius:7px;color:#fff;font-size:9px;font-weight:800;display:inline-flex;align-items:center;justify-content:center;flex:0 0 22px}
.mock-chat{padding:16px;display:flex;flex-direction:column;gap:10px;background:#fdfcff}
.bubble{max-width:82%;padding:9px 12px;border-radius:14px;font-size:12.5px;line-height:1.55}
.bubble.in{background:#fff;border:1px solid var(--line);align-self:flex-start}
.bubble.out{background:var(--p-600);color:#fff;align-self:flex-end}
.bubble small{display:block;opacity:.75;font-size:11px;margin-top:3px}
.ai-card{border:1px dashed var(--p-400);background:var(--p-100);border-radius:12px;padding:9px 12px;font-size:12px;color:var(--p-800)}

/* Sections */
section{padding:84px 0}
.section-head{max-width:760px;margin:0 auto 44px;text-align:center}
.section-head p{color:var(--ink-2);font-size:17px}
.kicker{font-size:13px;font-weight:700;color:var(--p-600);letter-spacing:.12em;text-transform:uppercase;margin-bottom:10px}
.alt{background:var(--bg-2)}
.dark{background:linear-gradient(160deg,var(--p-900),#1a0b3d 70%);color:#efe9ff}
.dark h2,.dark h3{color:#fff}
.dark p{color:#cfc3f3}

/* Platforms */
.platforms{display:flex;flex-wrap:wrap;justify-content:center;gap:12px}
.platform{display:flex;align-items:center;gap:10px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:10px 16px;font-weight:600;font-size:15px}
.platform .chip{width:28px;height:28px;flex-basis:28px;font-size:11px;border-radius:9px}
.platform em{font-style:normal;font-size:12px;color:var(--muted);font-weight:500}

/* Pillars */
.pillars{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.pillar{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);display:flex;flex-direction:column}
.pillar .tag{align-self:flex-start;font-size:12px;font-weight:700;color:var(--p-700);background:var(--p-100);padding:4px 10px;border-radius:999px;margin-bottom:14px}
.pillar ul{padding:0;margin:0 0 18px;list-style:none;color:var(--ink-2);font-size:15px}
.pillar li{padding:7px 0 7px 26px;position:relative;border-top:1px solid #f1edfb}
.pillar li::before{content:"";position:absolute;left:4px;top:15px;width:8px;height:8px;border-radius:50%;background:var(--p-500)}
.pillar .more{margin-top:auto;font-weight:600}

/* Feature grid */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.card p{color:var(--ink-2);font-size:15px;margin:0}
.dark .card{background:rgba(255,255,255,.05);border-color:rgba(255,255,255,.12)}
.dark .card p{color:#cfc3f3}
.icon{width:44px;height:44px;border-radius:12px;background:var(--p-100);color:var(--p-700);display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.dark .icon{background:rgba(155,107,255,.18);color:#d9ccff}
.icon svg{width:22px;height:22px}

/* Split feature */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split + .split{margin-top:72px}
.checks{list-style:none;padding:0;margin:18px 0 0}
.checks li{padding:8px 0 8px 30px;position:relative;color:var(--ink-2)}
.checks li::before{content:"";position:absolute;left:0;top:13px;width:18px;height:18px;border-radius:6px;background:var(--p-100) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236d28d9' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12l5 5L20 7'/%3E%3C/svg%3E") center/12px no-repeat}
.checks strong{color:var(--ink)}
.panel{background:#fff;border:1px solid var(--line);border-radius:22px;padding:22px;box-shadow:var(--shadow)}
.pipeline{display:flex;flex-wrap:wrap;gap:8px}
.pipeline span{font-size:13px;font-weight:600;padding:8px 12px;border-radius:10px;background:var(--p-100);color:var(--p-800)}
.pipeline span:nth-child(even){background:#f8edff;color:#86198f}
.stat-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:14px}
.stat-row div{background:var(--bg-2);border-radius:12px;padding:12px}
.stat-row b{display:block;font-family:var(--display);font-size:20px;color:var(--p-700)}
.stat-row small{color:var(--muted)}

/* Steps */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;counter-reset:s}
.step{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 22px}
.step::before{counter-increment:s;content:counter(s,decimal-leading-zero);font-family:var(--display);font-weight:800;font-size:28px;color:var(--p-200);display:block;margin-bottom:8px}
.step p{color:var(--ink-2);font-size:15px;margin:0}

/* Pricing */
.price-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;align-items:stretch}
.price{background:#fff;border:1px solid var(--line);border-radius:22px;padding:28px;display:flex;flex-direction:column}
.price.featured{border:2px solid var(--p-500);box-shadow:0 24px 48px -24px rgba(109,40,217,.45);position:relative}
.price.featured::after{content:"最受欢迎";position:absolute;top:-13px;left:28px;background:var(--p-600);color:#fff;font-size:12px;font-weight:700;padding:4px 10px;border-radius:999px}
.price .amount{font-family:var(--display);font-size:42px;font-weight:800;color:var(--ink);line-height:1.1}
.price .amount small{font-size:15px;color:var(--muted);font-weight:500}
.price .sub{color:var(--muted);font-size:14px;margin:6px 0 18px}
.price ul{list-style:none;padding:0;margin:0 0 22px;font-size:15px;color:var(--ink-2)}
.price li{padding:7px 0;border-top:1px solid #f1edfb}
.price li b{color:var(--ink)}
.price .btn{margin-top:auto}
.note{font-size:13px;color:var(--muted);text-align:center;margin-top:20px}
table.compare{width:100%;min-width:640px;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;font-size:15px}
.compare th,.compare td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.compare thead th{background:var(--p-900);color:#fff;font-weight:600}
.compare thead th.us{background:var(--p-600)}
.compare tbody th{font-weight:600;color:var(--ink);background:#faf8ff;width:22%}
.compare td.us{background:#f7f2ff;color:var(--p-900);font-weight:500}
.table-wrap{overflow-x:auto;border-radius:16px}

/* FAQ */
.faq{max-width:860px;margin:0 auto}
.faq details{background:#fff;border:1px solid var(--line);border-radius:14px;padding:4px 20px;margin-bottom:12px}
.faq summary{cursor:pointer;font-weight:600;padding:14px 0;list-style:none;display:flex;justify-content:space-between;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--p-600);font-size:22px;line-height:1}
.faq details[open] summary::after{content:"–"}
.faq details p{color:var(--ink-2);margin:0 0 16px}

/* CTA */
.cta{background:linear-gradient(120deg,var(--p-700),#8b2fd8 55%,var(--accent));color:#fff;border-radius:28px;padding:56px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta h2{color:#fff;margin:0 0 8px}
.cta p{color:#f2eaff;margin:0;max-width:620px}
.cta .actions{display:flex;gap:12px;flex-wrap:wrap}
.cta .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}

/* Page hero (sub pages) */
.page-hero{padding:64px 0 40px;background:radial-gradient(900px 400px at 90% -20%,#e7dbff 0,rgba(231,219,255,0) 60%)}
.page-hero .lead{max-width:760px}
.breadcrumb{font-size:13px;color:var(--muted);margin-bottom:14px}
.breadcrumb a{color:var(--muted)}

/* Footer */
.site-footer{background:#140a2e;color:#bdb2dc;padding:56px 0 28px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.6fr repeat(4,minmax(0,1fr));gap:28px}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:12px}
.site-footer a{color:#bdb2dc;display:block;padding:3px 0}
.site-footer a:hover{color:#fff}
.footer-brand p{margin-top:12px;max-width:320px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:36px;padding-top:20px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:13px}

/* Download page and register page */
.download-meta{color:var(--muted);font-size:13px}
.recommend{color:var(--p-600);font-weight:700;font-size:12px}
.register-result{min-height:1.4em;margin:0;font-weight:600;font-size:14px}
.register-result.is-error{color:#9f1239}
.hp{position:absolute;left:-10000px;width:1px;height:1px;overflow:hidden}
.download-center{min-height:calc(100vh - 68px);display:flex;align-items:center;background:#f4f5f7;text-align:center;padding:32px 0}
.download-center h1{font-size:clamp(28px,4vw,40px)}
.download-center .lead{color:var(--muted)}
.os-row{display:flex;justify-content:center;gap:28px;flex-wrap:wrap;margin:28px 0 12px}
.os-pick{position:relative;width:210px;min-height:188px;background:#fff;border-radius:8px;box-shadow:0 8px 24px rgba(27,20,48,.06);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:22px 16px 16px;color:var(--ink);font-weight:600;font-size:15px;line-height:1.45;text-align:center}
.os-pick:hover{color:var(--p-700)}
.os-pick.is-match{outline:2px solid var(--p-500)}
.os-pick .recommend{position:absolute;top:10px}
.os-icon svg{width:56px;height:56px;display:block}
.os-pick small{font-weight:500}
.auth-page{min-height:100vh;display:grid;grid-template-columns:1.05fr .95fr}
.auth-aside{background:linear-gradient(165deg,#3b1784 0%,#6d28d9 55%,#7c3aed 100%);color:#fff;padding:64px 56px;display:flex;flex-direction:column;justify-content:center}
.auth-aside .brand{color:#fff;margin-bottom:28px}
.auth-aside .brand small{color:rgba(255,255,255,.75)}
.auth-aside h1{font-size:clamp(28px,3vw,40px);max-width:460px}
.auth-aside ul{margin:8px 0 0;padding:0;list-style:none;max-width:460px}
.auth-aside li{position:relative;padding:6px 0 6px 22px}
.auth-aside li:before{content:"";position:absolute;left:0;top:14px;width:8px;height:8px;border-radius:50%;background:#ddd0ff}
.auth-panel{display:flex;align-items:center;justify-content:center;padding:24px 20px;background:#f7f6fb}
.auth-card{width:min(420px,100%);background:#fff;border-radius:16px;box-shadow:0 16px 40px rgba(42,15,92,.08);padding:28px 26px 18px;display:grid;gap:10px;position:relative}
.auth-card h1{font-size:22px;margin:0 0 6px}
.auth-card input,.auth-card select{width:100%;height:42px;border:0;border-radius:8px;background:#f3f4f6;padding:0 12px;font:inherit;color:var(--ink)}
.auth-row{display:grid;grid-template-columns:132px 1fr;gap:8px}
.auth-agree{display:flex;align-items:flex-start;gap:8px;font-size:13px;font-weight:500;color:var(--ink-2)}
.auth-agree input{width:16px;height:16px;margin-top:3px;flex:none}
.auth-card .btn{width:100%}
.auth-links{display:flex;justify-content:space-between;gap:12px;font-size:13px}
.auth-card .note{font-size:12px;margin:0}

/* Responsive */
@media (max-width:1024px){
  .hero-grid,.split{grid-template-columns:1fr}
  .pillars,.price-grid,.grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-4,.steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:760px){
  section{padding:60px 0}
  .menu-toggle{display:inline-flex;align-items:center;justify-content:center}
  .nav,.header-cta{display:none}
  .header-inner{flex-wrap:wrap;height:auto;min-height:68px}
  .site-header.open .header-inner{padding-bottom:14px}
  .site-header.open .nav{display:flex;flex-direction:column;width:100%;margin:0}
  .site-header.open .header-cta{display:flex;width:100%}
  .site-header.open .header-cta .btn{flex:1}
  .pillars,.price-grid,.grid-3,.grid-2,.grid-4,.steps{grid-template-columns:1fr}
  .mock-body{grid-template-columns:52px 1fr}
  .mock-list{display:none}
  .cta{padding:36px 24px}
  .footer-grid{grid-template-columns:1fr}
  .auth-page{grid-template-columns:1fr}
  .auth-aside{display:none}
  .download-center{min-height:auto;padding:48px 0}
}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto;transition:none!important}}

/* Guides / articles */
.article-title{font-size:clamp(28px,4vw,44px)}
.byline{color:var(--muted);font-size:14px;margin:8px 0 0}
.prose{max-width:820px;margin:0 auto;font-size:17px;color:var(--ink-2)}
.prose h2{font-size:clamp(22px,2.6vw,28px);color:var(--ink);margin:44px 0 14px}
.prose h3{color:var(--ink);margin:28px 0 10px}
.prose ul,.prose ol{padding-left:1.4em;margin:0 0 1.2em}
.prose li{margin:6px 0}
.prose strong{color:var(--ink)}
.prose a{text-decoration:underline;text-underline-offset:3px}
.prose .table-wrap{margin:8px 0 6px}
.prose table.compare{font-size:14px}
.prose .faq{max-width:none}
.tldr{background:var(--p-100);border:1px solid var(--p-200);border-radius:var(--radius);padding:22px 26px;margin:0 0 8px}
.tldr h2{font-size:18px;margin:0 0 8px;color:var(--p-800)}
.tldr ul{margin:0}
.related{border-top:1px solid var(--line);margin-top:48px;padding-top:8px}
.related h2{font-size:20px;margin-top:24px}
.guide-card{display:flex;flex-direction:column;color:inherit}
.guide-card:hover{border-color:var(--p-400);color:inherit}
.guide-card .kicker{margin:0 0 8px}
.guide-card p{color:var(--ink-2)}
.guide-card .more{margin-top:auto;color:var(--p-600);font-weight:600}
.article-shell{max-width:860px}