/* ===========================================================
   易翻译 easytranslate — 共享样式系统
   蓝白专业 · 品牌蓝 #0d1fb8
   =========================================================== */

@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@400;500;600;700;800&display=swap');

:root{
  /* Brand */
  --brand:        #0f23c4;       /* primary action */
  --brand-deep:   #0d1fb8;       /* logo blue */
  --brand-bright: #2a44e8;       /* hover / lighter */
  --brand-50:     #eef1ff;
  --brand-100:    #dee4ff;
  --brand-200:    #c4ceff;
  --brand-600:    #1733d6;

  /* Ink / neutrals (cool, slightly blue-tinted) */
  --ink:    #0c1230;
  --ink-2:  #2b3358;
  --ink-3:  #5a6285;
  --ink-4:  #8a92b2;
  --line:   #e6e9f4;
  --line-2: #eef0f8;
  --bg:     #ffffff;
  --bg-soft:#f6f8fe;
  --bg-blue:#f3f6ff;

  /* Accent (single warm pop, same chroma family) */
  --accent: #00b894; /* teal-green success */

  --radius:   18px;
  --radius-sm:12px;
  --radius-lg:28px;
  --shadow-sm: 0 2px 8px rgba(15,35,196,.06);
  --shadow:    0 12px 36px rgba(15,35,196,.10);
  --shadow-lg: 0 28px 70px rgba(12,18,48,.16);

  --maxw: 1200px;
  --nav-h: 72px;

  --font: "Manrope","PingFang SC","Hiragino Sans GB","Microsoft YaHei",
          -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  color:var(--ink);
  background:var(--bg);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}
.section{padding:96px 0}
.section-sm{padding:64px 0}
.bg-soft{background:var(--bg-soft)}
.bg-blue{background:var(--bg-blue)}
.center{text-align:center}

/* ---- Typography ---- */
h1,h2,h3,h4{line-height:1.18;letter-spacing:-.01em;font-weight:800;color:var(--ink)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;
  color:var(--brand);background:var(--brand-50);
  padding:7px 14px;border-radius:999px;margin-bottom:20px;
}
.h-display{font-size:clamp(38px,5.2vw,68px);letter-spacing:-.025em}
.h1{font-size:clamp(32px,4vw,52px)}
.h2{font-size:clamp(28px,3.2vw,40px)}
.h3{font-size:clamp(20px,2vw,25px)}
.lead{font-size:clamp(17px,1.5vw,21px);color:var(--ink-3);line-height:1.7}
.muted{color:var(--ink-3)}
.sec-head{max-width:760px;margin:0 auto 56px}
.sec-head.left{margin-left:0}
.grad{
  background:linear-gradient(100deg,var(--brand-deep),#5a6cff);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}

/* ---- Buttons ---- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  font-family:var(--font);font-weight:700;font-size:16px;
  padding:14px 26px;border-radius:13px;border:1.5px solid transparent;
  cursor:pointer;transition:.18s ease;white-space:nowrap;
}
.btn svg{width:19px;height:19px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 22px rgba(15,35,196,.28)}
.btn-primary:hover{background:var(--brand-bright);transform:translateY(-2px);box-shadow:0 14px 30px rgba(15,35,196,.34)}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--brand-200);background:var(--brand-50);transform:translateY(-2px)}
.btn-light{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.28)}
.btn-light:hover{background:rgba(255,255,255,.22)}
.btn-white{background:#fff;color:var(--brand);border-color:#fff;box-shadow:0 10px 26px rgba(8,14,48,.28)}
.btn-white:hover{background:#fff;transform:translateY(-2px);box-shadow:0 16px 34px rgba(8,14,48,.36)}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.btn-outline-light:hover{background:rgba(255,255,255,.12);border-color:#fff;transform:translateY(-2px)}
.btn-lg{padding:17px 34px;font-size:17px;border-radius:15px}
.btn-block{width:100%}

/* ---- Navbar ---- */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.82);
  backdrop-filter:saturate(160%) blur(14px);border-bottom:1px solid var(--line-2)}
.nav-in{height:var(--nav-h);display:flex;align-items:center;gap:32px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand img{height:30px;width:auto}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-links a{
  font-size:15px;font-weight:600;color:var(--ink-2);
  padding:9px 14px;border-radius:9px;transition:.15s;
}
.nav-links a:hover{color:var(--brand);background:var(--brand-50)}
.nav-links a.active{color:var(--brand)}
.nav-cta{margin-left:auto;display:flex;align-items:center;gap:12px}
.nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:8px}
.nav-toggle span{display:block;width:24px;height:2px;background:var(--ink);margin:5px 0;border-radius:2px;transition:.2s}

/* ---- Hero ---- */
.hero{position:relative;overflow:hidden;padding:84px 0 90px;
  background:
    radial-gradient(900px 460px at 82% -8%, var(--brand-100), transparent 60%),
    radial-gradient(700px 420px at 6% 12%, #e9f4ff, transparent 58%),
    var(--bg);
}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin:26px 0 32px}
.chip{display:inline-flex;align-items:center;gap:7px;font-size:14px;font-weight:600;
  color:var(--ink-2);background:#fff;border:1px solid var(--line);
  padding:8px 14px;border-radius:999px;box-shadow:var(--shadow-sm)}
.chip .dot{width:7px;height:7px;border-radius:50%;background:var(--accent)}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.hero-note{font-size:14px;color:var(--ink-4);margin-top:16px}

/* App window mock */
.appwin{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-lg);overflow:hidden}
.appbar{display:flex;align-items:center;gap:8px;padding:13px 16px;border-bottom:1px solid var(--line-2);background:var(--bg-soft)}
.appbar .tl{width:11px;height:11px;border-radius:50%}
.appwin-body{padding:20px}
.tpane{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.tcol{border:1px solid var(--line);border-radius:14px;padding:16px;min-height:170px;background:#fff}
.tcol .tlang{font-size:12px;font-weight:700;color:var(--brand);text-transform:uppercase;letter-spacing:.06em;margin-bottom:10px}
.tcol p{font-size:15px;color:var(--ink-2);line-height:1.6}
.tcol.src{background:var(--bg-soft)}

/* ---- Cards / grids ---- */
.grid{display:grid;gap:24px}
.g-2{grid-template-columns:repeat(2,1fr)}
.g-3{grid-template-columns:repeat(3,1fr)}
.g-4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;transition:.2s}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--brand-100)}
.card h3{font-size:20px;margin:18px 0 9px}
.card p{color:var(--ink-3);font-size:15.5px}
.split-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split-grid-top{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:56px;align-items:start}
.ficon{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;
  background:var(--brand-50);color:var(--brand)}
.ficon svg{width:26px;height:26px}
.media-card{overflow:hidden;border:1px solid var(--line);border-radius:var(--radius-lg);
  background:var(--bg-soft);box-shadow:var(--shadow)}
.media-card img{width:100%;height:100%;object-fit:cover}
.feature-shot{aspect-ratio:4/3}
.team-shot{aspect-ratio:1/1}

/* stats */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.stat .num{font-size:clamp(34px,4vw,50px);font-weight:800;color:var(--brand);letter-spacing:-.02em;line-height:1}
.stat .lbl{color:var(--ink-3);font-size:15px;margin-top:8px}

/* logos / langs marquee */
.langband{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.langpill{font-size:14px;font-weight:600;color:var(--ink-2);background:#fff;
  border:1px solid var(--line);padding:8px 16px;border-radius:999px}

/* steps */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;counter-reset:s}
.step{position:relative;padding-top:8px}
.step .n{width:42px;height:42px;border-radius:12px;background:var(--brand);color:#fff;
  font-weight:800;display:grid;place-items:center;font-size:18px;margin-bottom:18px}
.step h3{font-size:19px;margin-bottom:8px}
.step p{color:var(--ink-3);font-size:15px}

/* CTA band */
.cta-band{background:
    radial-gradient(700px 360px at 85% 10%, rgba(90,108,255,.5), transparent 60%),
    linear-gradient(120deg,var(--brand-deep),#1a2ad8);
  color:#fff;border-radius:var(--radius-lg);padding:64px 56px;text-align:center;position:relative;overflow:hidden}
.cta-band h2{color:#fff;margin-bottom:14px}
.cta-band p{color:rgba(255,255,255,.82);font-size:18px;max-width:560px;margin:0 auto 30px}

/* ---- Footer ---- */
.footer{background:#0a1030;color:#aeb6da;padding:72px 0 34px}
.footer a{color:#aeb6da;transition:.15s}
.footer a:hover{color:#fff}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.1)}
.foot-brand a{display:inline-block;line-height:0}
.foot-brand img{height:30px;margin-bottom:18px;filter:brightness(0) invert(1)}
.foot-brand p{font-size:14.5px;line-height:1.7;color:#8b93bd;max-width:280px}
.foot-col h4{color:#fff;font-size:14px;font-weight:700;margin-bottom:16px;letter-spacing:.02em}
.foot-col ul{display:flex;flex-direction:column;gap:11px}
.foot-col a{font-size:14.5px}
.foot-bot{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:14px;padding-top:26px;font-size:13.5px;color:#7a82ad}
.foot-bot a{font-size:13.5px}

/* ---- Generic page header ---- */
.page-hero{padding:72px 0 56px;background:
    radial-gradient(700px 360px at 88% -20%, var(--brand-100), transparent 62%),var(--bg-soft);
  border-bottom:1px solid var(--line-2)}
.crumbs{font-size:14px;color:var(--ink-4);margin-bottom:18px}
.crumbs a:hover{color:var(--brand)}
.crumbs span{margin:0 8px}

/* ---- Misc components ---- */
.pill-tabs{display:inline-flex;background:var(--bg-soft);border:1px solid var(--line);border-radius:999px;padding:5px}
.pill-tabs button{border:none;background:none;font-family:var(--font);font-weight:700;font-size:15px;
  color:var(--ink-3);padding:10px 22px;border-radius:999px;cursor:pointer;transition:.15s}
.pill-tabs button.on{background:#fff;color:var(--brand);box-shadow:var(--shadow-sm)}

/* check list */
.checks{display:flex;flex-direction:column;gap:13px}
.checks li{display:flex;gap:12px;align-items:flex-start;font-size:16px;color:var(--ink-2)}
.checks .ck{flex-shrink:0;width:22px;height:22px;border-radius:50%;background:var(--brand-50);color:var(--brand);
  display:grid;place-items:center;margin-top:2px}
.checks .ck svg{width:13px;height:13px}

/* accordion */
.acc{border:1px solid var(--line);border-radius:var(--radius);background:#fff;overflow:hidden}
.acc + .acc{margin-top:14px}
.acc summary{list-style:none;cursor:pointer;padding:22px 26px;font-weight:700;font-size:17px;
  display:flex;justify-content:space-between;align-items:center;gap:16px}
.acc summary::-webkit-details-marker{display:none}
.acc summary .ico{flex-shrink:0;width:26px;height:26px;border-radius:8px;background:var(--brand-50);
  color:var(--brand);display:grid;place-items:center;transition:.2s}
.acc[open] summary .ico{transform:rotate(45deg)}
.acc .body{padding:0 26px 24px;color:var(--ink-3);font-size:16px;line-height:1.75}

/* pricing */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.plan{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:34px 30px;display:flex;flex-direction:column}
.plan.feat{border-color:var(--brand);box-shadow:var(--shadow);position:relative}
.plan.feat::before{content:"最受欢迎";position:absolute;top:-13px;left:50%;transform:translateX(-50%);
  background:var(--brand);color:#fff;font-size:12px;font-weight:700;padding:6px 16px;border-radius:999px;letter-spacing:.04em}
.plan .pname{font-size:18px;font-weight:800}
.plan .pdesc{color:var(--ink-3);font-size:14.5px;margin:6px 0 20px;min-height:42px}
.plan .pcost{display:flex;align-items:baseline;gap:6px;margin-bottom:6px}
.plan .pcost .amt{font-size:46px;font-weight:800;letter-spacing:-.02em}
.plan .pcost .per{color:var(--ink-4);font-size:15px}
.plan .pfeat{margin:24px 0;display:flex;flex-direction:column;gap:13px;flex:1}

/* blog cards */
.post{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.2s;display:flex;flex-direction:column}
.post:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--brand-100)}
.featured-post{display:grid;grid-template-columns:1.1fr 1fr;align-items:stretch}
.post .thumb{aspect-ratio:16/9;display:grid;place-items:center;position:relative;overflow:hidden}
.post .thumb.featured-thumb{aspect-ratio:auto;min-height:300px}
.post .thumb img{width:100%;height:100%;object-fit:cover}
.post .meta{padding:22px 24px;display:flex;flex-direction:column;gap:9px;flex:1}
.post .cat{font-size:12.5px;font-weight:700;color:var(--brand);text-transform:uppercase;letter-spacing:.05em}
.post h3{font-size:19px;line-height:1.35}
.post p{color:var(--ink-3);font-size:14.5px;flex:1}
.post .date{font-size:13px;color:var(--ink-4)}

/* ===========================================================
   博客集合页 — 筛选 / 卡片增强
   =========================================================== */
.blog-toolbar{display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;margin-bottom:34px}
.blog-filter{display:inline-flex;flex-wrap:wrap;gap:6px;background:var(--bg-soft);border:1px solid var(--line);border-radius:999px;padding:5px}
.blog-filter button{border:none;background:none;font-family:var(--font);font-weight:700;font-size:14.5px;
  color:var(--ink-3);padding:9px 18px;border-radius:999px;cursor:pointer;transition:.15s;white-space:nowrap}
.blog-filter button:hover{color:var(--brand)}
.blog-filter button.on{background:#fff;color:var(--brand);box-shadow:var(--shadow-sm)}
.blog-count{font-size:14px;color:var(--ink-4)}
.post .meta .tagrow{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.post .rt{font-size:12.5px;color:var(--ink-4);display:inline-flex;align-items:center;gap:5px}
.post .rt svg{width:13px;height:13px}
.post.is-hidden{display:none}
.blog-empty{display:none;text-align:center;color:var(--ink-3);padding:60px 0;font-size:16px}

/* ===========================================================
   博客文章页 — 杂志式双栏布局 (与头部同宽)
   =========================================================== */
.article-hero{padding:54px 0 0;background:
    radial-gradient(720px 360px at 86% -34%, var(--brand-100), transparent 60%),
    radial-gradient(560px 300px at 8% -10%, #e9f4ff, transparent 60%),var(--bg-soft);
  border-bottom:1px solid var(--line-2)}
.article-head{max-width:880px}
.article-head .crumbs{margin-bottom:18px}
.art-cat{display:inline-flex;align-items:center;font-size:12.5px;font-weight:800;letter-spacing:.05em;
  text-transform:uppercase;color:var(--brand);background:var(--brand-50);padding:6px 13px;border-radius:999px}
.art-title{font-size:clamp(28px,3.8vw,46px);line-height:1.18;margin:18px 0 16px;letter-spacing:-.02em;max-width:880px}
.art-dek{font-size:clamp(16px,1.55vw,20px);color:var(--ink-3);line-height:1.7;max-width:720px}
.art-meta{display:flex;align-items:center;gap:14px;margin:26px 0 0;flex-wrap:wrap}
.art-avatar{width:46px;height:46px;border-radius:50%;background:linear-gradient(135deg,var(--brand),#5a6cff);
  color:#fff;display:grid;place-items:center;font-weight:800;font-size:17px;flex-shrink:0}
.art-byline{display:flex;flex-direction:column;line-height:1.4}
.art-byline .who{font-weight:700;font-size:15px;color:var(--ink)}
.art-byline .when{font-size:13.5px;color:var(--ink-4)}
.art-meta .sep{width:1px;height:30px;background:var(--line)}
.art-meta .rt{font-size:13.5px;color:var(--ink-4);display:inline-flex;align-items:center;gap:6px}
.art-meta .rt svg{width:15px;height:15px}
.art-cover{margin:0;transform:translateY(38px)}
.art-cover img{width:100%;aspect-ratio:16/6.4;object-fit:cover;border-radius:var(--radius-lg);
  border:1px solid var(--line);box-shadow:var(--shadow-lg)}

/* two-column body */
.article-body{padding:78px 0 0}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 308px;gap:58px;align-items:start}
.article-main{min-width:0;grid-column:1}
.article-aside{grid-column:2;position:sticky;top:90px;display:flex;flex-direction:column;gap:18px}

/* prose fills the main column */
.prose{max-width:none;margin:0;font-size:17.5px;line-height:1.85;color:var(--ink-2)}
.prose>p{margin:0 0 24px}
.prose>p:first-of-type{font-size:19.5px;color:var(--ink)}
.prose h2{position:relative;font-size:clamp(22px,2.3vw,30px);margin:54px 0 18px;padding-left:20px;
  letter-spacing:-.015em;scroll-margin-top:88px}
.prose h2::before{content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:5px;border-radius:3px;
  background:linear-gradient(var(--brand),#5a6cff)}
.prose h3{font-size:20px;margin:34px 0 12px}
.prose a{color:var(--brand);font-weight:600;border-bottom:1.5px solid var(--brand-200);transition:.15s}
.prose a:hover{border-color:var(--brand)}
.prose strong{color:var(--ink);font-weight:700}
.prose ul,.prose ol{margin:0 0 24px;padding-left:4px;display:flex;flex-direction:column;gap:12px}
.prose ul li{position:relative;padding-left:30px}
.prose ul li::before{content:"";position:absolute;left:6px;top:12px;width:7px;height:7px;border-radius:2px;
  background:var(--brand);transform:rotate(45deg)}
.prose ol{counter-reset:li;list-style:none}
.prose ol li{position:relative;padding-left:42px;counter-increment:li}
.prose ol li::before{content:counter(li);position:absolute;left:0;top:1px;width:27px;height:27px;border-radius:8px;
  background:var(--brand-50);color:var(--brand);font-weight:800;font-size:14px;display:grid;place-items:center}
.prose blockquote{margin:32px 0;padding:18px 26px;border-left:4px solid var(--brand);background:var(--bg-blue);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--ink-2);font-size:18px;font-style:italic;line-height:1.7}
.prose blockquote p{margin:0}
.prose figure{margin:34px 0}
.prose figure img{width:100%;border-radius:var(--radius);border:1px solid var(--line)}
.prose figure figcaption{text-align:center;font-size:13.5px;color:var(--ink-4);margin-top:12px}
.prose hr{border:none;border-top:1px solid var(--line);margin:48px 0}

/* callout / tip box (inside prose, full main width) */
.callout{margin:34px 0;display:flex;gap:16px;background:var(--brand-50);
  border:1px solid var(--brand-100);border-radius:var(--radius);padding:22px 24px}
.callout .ci{flex-shrink:0;width:38px;height:38px;border-radius:11px;background:var(--brand);color:#fff;display:grid;place-items:center}
.callout .ci svg{width:20px;height:20px}
.callout .ctxt{font-size:16px;line-height:1.7;color:var(--ink-2)}
.callout .ctxt strong{color:var(--ink)}

/* key takeaways */
.takeaways{margin:48px 0 0;background:#fff;border:1px solid var(--line);
  border-left:4px solid var(--accent);border-radius:var(--radius);padding:26px 30px;box-shadow:var(--shadow-sm)}
.takeaways h2{font-size:18px!important;margin:0 0 16px!important;padding:0!important}
.takeaways h2::before{display:none}
.takeaways ul{margin:0;display:flex;flex-direction:column;gap:11px}
.takeaways li{position:relative;padding-left:30px;font-size:16px;color:var(--ink-2);line-height:1.6}
.takeaways li::before{content:"";position:absolute;left:4px;top:8px;width:8px;height:8px;border-radius:50%;background:var(--accent)}

/* tags */
.art-tags{margin:40px 0 0;display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.art-tags .lbl{font-size:14px;font-weight:700;color:var(--ink-4);margin-right:4px}
.art-tags a{font-size:13.5px;font-weight:600;color:var(--ink-2);background:var(--bg-soft);
  border:1px solid var(--line);padding:7px 14px;border-radius:999px;transition:.15s}
.art-tags a:hover{color:var(--brand);border-color:var(--brand-200);background:var(--brand-50)}

/* sticky sidebar — TOC */
.toc{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px 22px;box-shadow:var(--shadow-sm)}
.toc .toc-t{font-size:12px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-4);margin-bottom:14px}
.toc ol{counter-reset:toc;list-style:none;display:flex;flex-direction:column;gap:2px}
.toc li{counter-increment:toc}
.toc a{display:flex;gap:11px;align-items:flex-start;font-size:14.5px;font-weight:600;color:var(--ink-3);
  line-height:1.45;padding:8px 10px;border-radius:9px;transition:.15s}
.toc a::before{content:counter(toc,decimal-leading-zero);color:var(--brand);font-weight:800;font-size:13px;flex-shrink:0}
.toc a:hover{color:var(--brand);background:var(--brand-50)}
.toc a.active{color:var(--brand);background:var(--brand-50)}

/* sidebar — mini download card */
.aside-card{background:
    radial-gradient(420px 220px at 80% 0%, rgba(90,108,255,.55), transparent 60%),
    linear-gradient(160deg,var(--brand-deep),#1a2ad8);
  color:#fff;border-radius:var(--radius);padding:24px 22px;box-shadow:var(--shadow)}
.aside-card img{height:26px;filter:brightness(0) invert(1);margin-bottom:14px}
.aside-card h4{color:#fff;font-size:16.5px;margin-bottom:7px}
.aside-card p{font-size:13.5px;color:rgba(255,255,255,.82);line-height:1.6;margin-bottom:16px}
.aside-card .btn{width:100%}

/* author card (full width) */
.author-card{margin:52px 0 0;display:flex;gap:18px;align-items:center;
  background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius);padding:24px 28px}
.author-card .art-avatar{width:54px;height:54px;font-size:20px}
.author-card .ab{flex:1}
.author-card .ab .who{font-weight:800;font-size:16px}
.author-card .ab .bio{font-size:14px;color:var(--ink-3);margin-top:3px;line-height:1.6}

/* prev/next — redesigned cards (full width, 与头部同宽) */
.art-foot-nav{margin:20px 0 0;display:grid;grid-template-columns:1fr 1fr;gap:18px}
.fn-card{display:flex;align-items:center;gap:15px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);padding:20px 24px;transition:.2s;min-width:0}
.fn-card:hover{border-color:var(--brand-200);box-shadow:var(--shadow);transform:translateY(-3px)}
.fn-card svg{width:22px;height:22px;color:var(--brand);flex-shrink:0}
.fn-card .fn-txt{display:flex;flex-direction:column;min-width:0}
.fn-card .dir{font-size:12.5px;font-weight:700;color:var(--ink-4);letter-spacing:.04em;margin-bottom:2px}
.fn-card .t{font-size:15.5px;font-weight:800;color:var(--ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.fn-card.next{justify-content:flex-end;text-align:right}

/* related */
.related-head{margin:0 0 30px}

@media (max-width:980px){
  .article-layout{grid-template-columns:1fr;gap:0}
  .article-aside{position:static;grid-column:1;margin-top:44px}
  .article-aside .toc{display:none}
}
@media (max-width:760px){
  .art-cover{transform:translateY(28px)}
  .article-body{padding:60px 0 0}
  .prose{font-size:16.5px}
  .blog-toolbar{flex-direction:column;align-items:flex-start}
  .art-foot-nav{grid-template-columns:1fr}
  .author-card{flex-direction:column;text-align:center}
}

/* placeholder image (striped) */
.ph{background:
  repeating-linear-gradient(135deg,#eef1ff 0 14px,#e3e8ff 14px 28px);
  display:grid;place-items:center;color:var(--brand);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:13px;font-weight:600}

/* contact */
.field{display:flex;flex-direction:column;gap:7px;margin-bottom:18px}
.field label{font-size:14px;font-weight:700;color:var(--ink-2)}
.field input,.field textarea,.field select{
  font-family:var(--font);font-size:15.5px;color:var(--ink);
  border:1.5px solid var(--line);border-radius:12px;padding:13px 15px;background:#fff;transition:.15s;width:100%}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px var(--brand-50)}
.field textarea{resize:vertical;min-height:130px}

/* download platform card */
.dl-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:40px;box-shadow:var(--shadow)}
.product-icon{width:56px;height:56px;border-radius:16px;object-fit:cover;flex-shrink:0;
  box-shadow:0 10px 24px rgba(15,35,196,.18)}
.os-pills{display:flex;gap:10px;flex-wrap:wrap;margin:6px 0 26px}
.os-pill{display:inline-flex;align-items:center;gap:9px;font-weight:700;font-size:15px;color:var(--ink-2);
  border:1.5px solid var(--line);border-radius:12px;padding:11px 18px;cursor:pointer;background:#fff}
.os-pill.on{border-color:var(--brand);color:var(--brand);background:var(--brand-50)}
.os-pill.soon{opacity:.55;cursor:not-allowed}
.dl-spec{display:grid;grid-template-columns:repeat(2,1fr);gap:14px 30px;margin-top:26px;padding-top:26px;border-top:1px solid var(--line-2)}
.dl-spec .row{display:flex;justify-content:space-between;font-size:14.5px}
.dl-spec .row span:first-child{color:var(--ink-4)}
.dl-spec .row span:last-child{font-weight:600;color:var(--ink-2)}

/* responsive */
@media (max-width:980px){
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .split-grid,.split-grid-top,.contact-grid,.featured-post{grid-template-columns:1fr;gap:36px}
  .post .thumb.featured-thumb{aspect-ratio:16/9;min-height:0}
  .g-3,.g-4,.steps,.price-grid,.stats{grid-template-columns:1fr 1fr}
  .foot-grid{grid-template-columns:1fr 1fr 1fr;gap:30px}
  .foot-brand{grid-column:1/-1}
  .nav-links{display:none}
  .nav-toggle{display:block}
  .section{padding:72px 0}
  .cta-band{padding:48px 26px}
}
@media (max-width:620px){
  .g-2,.g-3,.g-4,.steps,.price-grid,.stats,.tpane,.dl-spec{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
  .wrap{padding:0 20px}
  .hero{padding:56px 0}
  .nav-cta .btn-ghost{display:none}
}

/* mobile menu */
.mmenu{display:none;position:fixed;inset:var(--nav-h) 0 auto 0;background:#fff;border-bottom:1px solid var(--line);
  padding:16px 20px 24px;z-index:49;box-shadow:var(--shadow)}
.mmenu.open{display:block}
.mmenu a{display:block;padding:13px 8px;font-weight:600;font-size:16px;border-bottom:1px solid var(--line-2)}
.mmenu .btn{margin-top:16px;width:100%}