/* 币程笔记 — Stripe-inspired clean tutorial theme (purple accent + white) */
:root{
  --sb-bg:#f6f9fc;
  --sb-bg-alt:#ffffff;
  --sb-fg:#0a2540;
  --sb-mute:#425466;
  --sb-faint:#8898aa;
  --sb-line:#e3e8ee;
  --sb-line-soft:#eef1f6;
  --sb-accent:#635bff;
  --sb-accent-dk:#4f46e5;
  --sb-accent-soft:#eef0ff;
  --sb-code-bg:#0a2540;
  --sb-code-fg:#e3e8ee;
  --sb-radius:6px;
  --sb-radius-lg:10px;
  --sb-shadow-sm:0 1px 2px rgba(15,23,42,.04);
  --sb-shadow-md:0 4px 18px -4px rgba(15,23,42,.08);
  --sb-font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:var(--sb-font);color:var(--sb-fg);background:var(--sb-bg);font-size:15px;line-height:1.62;-webkit-font-smoothing:antialiased}
a{color:var(--sb-accent);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;display:block}

/* Header */
.sb-header{position:sticky;top:0;z-index:50;background:var(--sb-bg-alt);border-bottom:1px solid var(--sb-line)}
.sb-header__row{max-width:1280px;margin:0 auto;display:flex;align-items:center;gap:20px;padding:14px 28px}
.sb-brand{display:flex;align-items:baseline;gap:8px;color:var(--sb-fg)}
.sb-brand:hover{text-decoration:none}
.sb-brand__mark{display:inline-flex;align-self:center}
.sb-brand__name{font-weight:700;font-size:17px;letter-spacing:-.01em}
.sb-brand__sub{font-size:13px;font-weight:500;color:var(--sb-mute);letter-spacing:.05em}
.sb-header__mid{flex:1;display:flex;gap:10px;justify-content:center;max-width:720px;margin:0 auto}
.sb-search{flex:1;max-width:400px;display:flex;align-items:center;gap:8px;padding:8px 14px;background:var(--sb-bg);border:1px solid var(--sb-line);border-radius:var(--sb-radius);cursor:pointer;color:var(--sb-faint);font-size:13px}
.sb-search:hover{border-color:var(--sb-accent);background:#fff}
.sb-search__icn{display:inline-flex;color:var(--sb-faint)}
.sb-search__ph{flex:1;color:var(--sb-faint)}
.sb-search__kbd{padding:1px 7px;font-size:11px;color:var(--sb-mute);background:#fff;border:1px solid var(--sb-line);border-radius:3px}
.sb-ai{display:inline-flex;align-items:center;gap:6px;padding:8px 14px;background:#fff;border:1px solid var(--sb-line);border-radius:var(--sb-radius);cursor:pointer;color:var(--sb-fg);font-size:13px;font-family:inherit}
.sb-ai:hover{border-color:var(--sb-accent);color:var(--sb-accent)}
.sb-ai__spark{color:var(--sb-accent);display:inline-flex}
.sb-header__right{display:flex;align-items:center;gap:14px}
.sb-link{font-size:13px;font-weight:500}
.sb-link--ghost{color:var(--sb-accent)}
.sb-link--primary{padding:7px 14px;background:var(--sb-accent);color:#fff;border-radius:var(--sb-radius)}
.sb-link--primary:hover{background:var(--sb-accent-dk);text-decoration:none}
.sb-lang{position:relative}
.sb-lang__btn{width:34px;height:34px;display:inline-flex;align-items:center;justify-content:center;background:transparent;border:1px solid transparent;border-radius:var(--sb-radius);cursor:pointer;color:var(--sb-mute)}
.sb-lang__btn:hover{border-color:var(--sb-line)}
.sb-lang__menu{position:absolute;right:0;top:calc(100% + 4px);min-width:150px;background:#fff;border:1px solid var(--sb-line);border-radius:var(--sb-radius);box-shadow:var(--sb-shadow-md);padding:6px;display:none;flex-direction:column;gap:2px}
.sb-lang.is-open .sb-lang__menu{display:flex}
.sb-lang__menu a{display:block;padding:6px 10px;font-size:13px;color:var(--sb-fg);border-radius:4px}
.sb-lang__menu a:hover{background:var(--sb-bg);text-decoration:none}
.sb-lang__menu a.is-active{color:var(--sb-accent);background:var(--sb-accent-soft)}
.sb-burger{display:none;background:none;border:0;color:var(--sb-fg);cursor:pointer;padding:6px}

/* Sub nav */
.sb-subnav{max-width:1280px;margin:0 auto;padding:0 28px;display:flex;gap:4px;align-items:center;justify-content:space-between;border-top:1px solid var(--sb-line-soft)}
.sb-subnav__close{display:none;background:none;border:0;cursor:pointer;color:var(--sb-fg)}
.sb-subnav__list{list-style:none;margin:0;padding:6px 0;display:flex;gap:6px}
.sb-subnav__link{display:inline-block;padding:8px 14px;color:var(--sb-mute);font-size:14px;font-weight:500;border-radius:var(--sb-radius)}
.sb-subnav__link:hover{color:var(--sb-fg);background:var(--sb-bg);text-decoration:none}
.sb-subnav__link.is-active{color:var(--sb-accent);background:var(--sb-accent-soft)}
.sb-subnav__lang{display:flex;gap:2px;font-size:12px}
.sb-subnav__lang a{color:var(--sb-faint);padding:4px 7px;border-radius:4px}
.sb-subnav__lang a.is-active{color:var(--sb-accent);font-weight:600}
.sb-overlay{display:none}

/* Hero */
.sb-main{min-height:60vh}
.sb-hero{position:relative;background:var(--sb-bg-alt);overflow:hidden;padding:56px 28px 72px;border-bottom:1px solid var(--sb-line)}
.sb-hero__dots{position:absolute;top:24px;left:0;width:240px;height:320px;background-image:radial-gradient(circle,#c1a3f2 1.2px,transparent 1.2px);background-size:12px 12px;opacity:.55;mask-image:linear-gradient(to bottom right,rgba(0,0,0,.9),transparent 70%);-webkit-mask-image:linear-gradient(to bottom right,rgba(0,0,0,.9),transparent 70%);pointer-events:none}
.sb-hero__wrap{position:relative;max-width:1280px;margin:0 auto;display:grid;grid-template-columns:1fr 400px;gap:60px;align-items:start}
.sb-hero__text{padding-top:40px}
.sb-hero__kicker{font-size:13px;color:var(--sb-faint);text-transform:uppercase;letter-spacing:.12em;margin:0 0 12px}
.sb-hero__title{font-size:52px;line-height:1.1;margin:0 0 16px;font-weight:700;letter-spacing:-.02em;color:var(--sb-fg)}
.sb-hero__lede{font-size:18px;line-height:1.55;color:var(--sb-mute);max-width:560px;margin:0 0 28px}
.sb-hero__cta{display:flex;gap:12px;flex-wrap:wrap}
.sb-btn{display:inline-flex;align-items:center;gap:6px;padding:10px 18px;border-radius:var(--sb-radius);font-size:14px;font-weight:500;font-family:inherit;cursor:pointer;border:0;transition:.15s}
.sb-btn--primary{background:var(--sb-accent);color:#fff}
.sb-btn--primary:hover{background:var(--sb-accent-dk);text-decoration:none}
.sb-btn--ghost{background:transparent;color:var(--sb-accent);border-bottom:1px solid transparent;padding:10px 0;border-radius:0}
.sb-btn--ghost:hover{border-bottom-color:var(--sb-accent);text-decoration:none}
.sb-hero__side{display:flex;flex-direction:column;gap:16px;padding-top:60px}
.sb-hero__note{background:#fff;border:1px solid var(--sb-line);border-radius:var(--sb-radius);padding:14px 16px;box-shadow:var(--sb-shadow-sm);font-size:13px}
.sb-hero__note h4{margin:0 0 6px;font-size:13px;color:var(--sb-accent)}
.sb-hero__note p{margin:0;color:var(--sb-mute);line-height:1.5}
.sb-hero__card{position:relative;background:#fff;border:1px solid var(--sb-line);border-radius:var(--sb-radius-lg);padding:20px;box-shadow:var(--sb-shadow-md)}
.sb-hero__card-arrow{position:absolute;right:20px;top:18px;color:var(--sb-accent)}
.sb-hero__card-title{font-size:13px;color:var(--sb-accent);font-weight:600;margin:0 0 14px}
.sb-hero__card-art{margin:0 0 14px}
.sb-hero__card-label{font-size:12px;color:var(--sb-faint);margin:0 0 4px;text-transform:uppercase;letter-spacing:.08em}
.sb-hero__card-code{display:block;font-size:13px;color:var(--sb-fg);background:var(--sb-bg);padding:6px 10px;border-radius:4px;letter-spacing:.01em}

/* 3-col links */
.sb-cols{background:var(--sb-bg-alt);padding:48px 28px;border-bottom:1px solid var(--sb-line)}
.sb-cols__wrap{max-width:1280px;margin:0 auto;display:grid;grid-template-columns:repeat(3,1fr);gap:48px}
.sb-col__title{font-size:22px;font-weight:600;color:var(--sb-fg);margin:0 0 18px;letter-spacing:-.01em}
.sb-col__list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.sb-col__list a{color:var(--sb-accent);font-size:15px}
.sb-col__list a:hover{color:var(--sb-accent-dk)}

/* Try-it */
.sb-try{background:var(--sb-bg-alt);padding:48px 28px;border-bottom:1px solid var(--sb-line)}
.sb-try__wrap{max-width:1280px;margin:0 auto}
.sb-try__head h2{font-size:22px;margin:0 0 4px;color:var(--sb-fg);font-weight:600;display:flex;align-items:center;gap:8px}
.sb-try__head h2::after{content:"";width:16px;height:16px;border-radius:50%;border:1px solid var(--sb-line);display:inline-flex}
.sb-try__head p{margin:0 0 24px;color:var(--sb-mute);font-size:14px}
.sb-try__body{display:grid;grid-template-columns:260px 1fr;gap:0;border:1px solid var(--sb-line);border-radius:var(--sb-radius-lg);overflow:hidden;background:#fff}
.sb-try__steps{list-style:none;margin:0;padding:0;background:var(--sb-bg);border-right:1px solid var(--sb-line)}
.sb-try__step{padding:14px 22px;border-bottom:1px solid var(--sb-line-soft);font-size:14px;color:var(--sb-fg);cursor:default}
.sb-try__step:last-child{border-bottom:0}
.sb-try__step.is-current{background:#fff;color:var(--sb-fg);position:relative}
.sb-try__step.is-current::before{content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:var(--sb-accent)}
.sb-try__info{padding:24px 28px;background:#fff;min-height:220px}
.sb-try__info-h{margin:0 0 10px;font-size:16px;font-weight:600;color:var(--sb-fg);letter-spacing:-.01em}
.sb-try__info-p{margin:0 0 16px;font-size:14px;line-height:1.65;color:var(--sb-mute)}
.sb-try__info-dl{margin:0;display:grid;grid-template-columns:repeat(2,1fr);gap:10px 24px}
.sb-try__info-dl>div{display:flex;flex-direction:column;gap:2px;padding:8px 0;border-bottom:1px dashed var(--sb-line-soft)}
.sb-try__info-dl dt{font-size:12px;color:var(--sb-faint);letter-spacing:.04em}
.sb-try__info-dl dd{margin:0;font-size:14px;color:var(--sb-fg);font-weight:500}

/* Category grid */
.sb-cats{padding:56px 28px;background:var(--sb-bg)}
.sb-cats--page{background:var(--sb-bg-alt)}
.sb-cats__wrap{max-width:1280px;margin:0 auto}
.sb-cats__title,.sb-cats__h1{font-size:28px;font-weight:700;color:var(--sb-fg);margin:0 0 8px;letter-spacing:-.01em}
.sb-cats__lede{color:var(--sb-mute);margin:0 0 28px;font-size:15px}
.sb-cats__grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:12px}
.sb-cat{display:flex;flex-direction:column;gap:6px;padding:18px 20px;background:#fff;border:1px solid var(--sb-line);border-radius:var(--sb-radius-lg);color:var(--sb-fg);transition:.15s}
.sb-cat:hover{border-color:var(--sb-accent);transform:translateY(-1px);box-shadow:var(--sb-shadow-md);text-decoration:none}
.sb-cat__icon{width:36px;height:36px;display:inline-flex;align-items:center;justify-content:center;background:var(--sb-accent-soft);border-radius:8px}
.sb-cat__name{font-size:15px;font-weight:600;color:var(--sb-fg)}
.sb-cat__desc{font-size:13px;color:var(--sb-mute);line-height:1.55}

/* Latest posts */
.sb-latest{background:var(--sb-bg-alt);padding:56px 28px;border-top:1px solid var(--sb-line)}
.sb-latest__wrap{max-width:1280px;margin:0 auto}
.sb-latest__head{display:flex;align-items:baseline;justify-content:space-between;margin:0 0 20px;gap:16px;flex-wrap:wrap}
.sb-latest__head h2{font-size:22px;margin:0;font-weight:600;color:var(--sb-fg)}
.sb-latest__all{display:inline-flex;align-items:center;gap:4px;font-size:14px;color:var(--sb-accent)}
.sb-latest__list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--sb-line);border:1px solid var(--sb-line);border-radius:var(--sb-radius-lg);overflow:hidden}
.sb-latest__item{background:#fff}
.sb-latest__link{display:block;padding:16px 20px;color:var(--sb-fg)}
.sb-latest__link:hover{background:var(--sb-bg);text-decoration:none}
.sb-latest__title{display:block;font-size:15px;font-weight:500;line-height:1.5;margin-bottom:8px}
.sb-latest__meta{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:12px;color:var(--sb-faint)}
.sb-latest__tag{padding:1px 8px;background:var(--sb-accent-soft);color:var(--sb-accent);border-radius:3px;font-weight:500}

/* FAQ - 币程笔记独有：浅紫底 + 序号chip + 横向卡片 */
.sb-faq{padding:64px 28px;background:linear-gradient(180deg,#f6f4ff 0%,#fbfaff 100%)}
.sb-faq__wrap{max-width:960px;margin:0 auto}
.sb-faq__title{font-size:26px;margin:0 0 28px;color:var(--sb-fg);font-weight:700;letter-spacing:-.01em;position:relative;padding-left:14px}
.sb-faq__title::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;background:var(--sb-accent);border-radius:2px}
.sb-faq__list{display:flex;flex-direction:column;gap:14px}
.sb-faq__card{display:flex;gap:18px;align-items:flex-start;background:#fff;border:1px solid #e6e1fb;border-radius:14px;padding:20px 22px;transition:.18s ease;box-shadow:0 1px 0 rgba(99,91,255,.04)}
.sb-faq__card:hover{border-color:#c9c0f5;box-shadow:0 6px 18px -8px rgba(99,91,255,.25);transform:translateY(-1px)}
.sb-faq__num{flex-shrink:0;width:42px;height:42px;border-radius:50%;background:var(--sb-accent-soft);color:var(--sb-accent);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:13px;letter-spacing:.04em;font-variant-numeric:tabular-nums}
.sb-faq__body{flex:1;min-width:0}
.sb-faq__q{margin:0 0 8px;font-size:16px;font-weight:600;line-height:1.45;color:var(--sb-fg)}
.sb-faq__q a{color:inherit;text-decoration:none;display:inline-flex;align-items:center;gap:6px;transition:color .15s}
.sb-faq__q a:hover{color:var(--sb-accent)}
.sb-faq__arr{display:inline-flex;color:var(--sb-accent);transition:transform .18s}
.sb-faq__q a:hover .sb-faq__arr{transform:translateX(3px)}
.sb-faq__a{margin:0;color:var(--sb-mute);font-size:14px;line-height:1.7}
@media (max-width:640px){.sb-faq__card{padding:16px;gap:12px}.sb-faq__num{width:36px;height:36px;font-size:12px}.sb-faq__q{font-size:15px}}

/* Article */
.sb-article{background:var(--sb-bg-alt);min-height:60vh;padding:32px 28px 64px}
.sb-article__wrap{max-width:1280px;margin:0 auto;display:grid;grid-template-columns:220px 1fr 260px;gap:48px;align-items:start}
.sb-side__box{position:sticky;top:130px;background:#fff;border:1px solid var(--sb-line);border-radius:var(--sb-radius-lg);padding:18px;margin-bottom:16px}
.sb-side__kicker{font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--sb-faint);margin:0 0 10px;font-weight:600}
.sb-side__cats,.sb-side__posts{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}
.sb-side__cats a,.sb-side__posts a{display:block;padding:6px 8px;font-size:13px;color:var(--sb-mute);border-radius:4px;line-height:1.45}
.sb-side__cats a:hover,.sb-side__posts a:hover{background:var(--sb-bg);color:var(--sb-fg);text-decoration:none}
.sb-side__cats a.is-active{color:var(--sb-accent);background:var(--sb-accent-soft);font-weight:500}
.sb-side__box--cta{background:linear-gradient(135deg,#635bff,#4f46e5);color:#fff;border:0}
.sb-side__box--cta .sb-side__kicker{color:rgba(255,255,255,.75)}
.sb-side__box--cta p{margin:0 0 12px;font-size:13px;line-height:1.55;color:rgba(255,255,255,.9)}
.sb-side__cta{display:inline-flex;align-items:center;gap:6px;padding:6px 10px;background:rgba(255,255,255,.14);color:#fff;border-radius:var(--sb-radius);font-size:13px}
.sb-side__cta:hover{background:rgba(255,255,255,.24);text-decoration:none}
.sb-crumb{display:flex;gap:6px;align-items:center;font-size:13px;color:var(--sb-faint);margin:0 0 16px}
.sb-crumb a{color:var(--sb-mute)}
.sb-crumb span{display:inline-flex;color:var(--sb-line)}
.sb-article__main{min-width:0}
.sb-article__head{margin:0 0 24px;padding:0 0 20px;border-bottom:1px solid var(--sb-line-soft)}
.sb-article__title{font-size:36px;line-height:1.2;margin:0 0 12px;color:var(--sb-fg);font-weight:700;letter-spacing:-.01em}
.sb-article__meta{display:flex;gap:8px;font-size:13px;color:var(--sb-faint)}
.sb-toc{background:var(--sb-bg);border:1px solid var(--sb-line);border-left:3px solid var(--sb-accent);border-radius:var(--sb-radius);padding:14px 18px;margin:0 0 24px}
.sb-toc__label{font-size:12px;color:var(--sb-faint);text-transform:uppercase;letter-spacing:.08em;margin-bottom:8px;font-weight:600}
.sb-toc__list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:4px}
.sb-toc__item a{font-size:13px;color:var(--sb-mute)}
.sb-toc__item--h3{padding-left:16px}
.sb-article__tags{display:flex;flex-wrap:wrap;gap:6px;margin:24px 0 0;padding:20px 0 0;border-top:1px solid var(--sb-line-soft)}
.sb-tag{display:inline-block;padding:3px 10px;background:var(--sb-accent-soft);color:var(--sb-accent);border-radius:3px;font-size:12px;font-weight:500}
.sb-tag:hover{text-decoration:none;background:var(--sb-accent);color:#fff}

/* Prose (article body) */
.sb-prose{font-size:15.5px;line-height:1.75;color:var(--sb-fg)}
.sb-prose h2{font-size:24px;font-weight:700;margin:40px 0 14px;padding-top:16px;border-top:1px solid var(--sb-line-soft);letter-spacing:-.01em}
.sb-prose h2:first-child{border-top:0;padding-top:0;margin-top:0}
.sb-prose h3{font-size:19px;font-weight:600;margin:28px 0 10px}
.sb-prose p{margin:0 0 16px}
.sb-prose a:not(.dl-card__cta){color:var(--sb-accent);font-weight:500}
.sb-prose a:hover{text-decoration:underline}
.sb-prose ul,.sb-prose ol{padding-left:24px;margin:0 0 16px}
.sb-prose li{margin-bottom:6px}
.sb-prose blockquote{border-left:3px solid var(--sb-accent);background:var(--sb-accent-soft);margin:20px 0;padding:14px 18px;color:var(--sb-fg);border-radius:0 var(--sb-radius) var(--sb-radius) 0}
.sb-prose blockquote p:last-child{margin:0}
.sb-prose code{background:transparent;padding:0;color:inherit;font-family:inherit;font-size:inherit}
.sb-prose pre{background:var(--sb-bg);color:var(--sb-fg);padding:14px 18px;border:1px solid var(--sb-line);border-radius:var(--sb-radius);margin:0 0 20px;font-size:14px;line-height:1.65;font-family:inherit;white-space:pre-wrap}
.sb-prose pre code{background:transparent;color:inherit;padding:0;font-family:inherit}
.sb-prose table{width:100%;border-collapse:collapse;margin:0 0 20px;font-size:14px}
.sb-prose th,.sb-prose td{padding:10px 14px;border:1px solid var(--sb-line);text-align:left}
.sb-prose th{background:var(--sb-bg);font-weight:600}
.sb-prose hr{border:0;border-top:1px solid var(--sb-line);margin:28px 0}
.sb-prose strong{font-weight:600;color:var(--sb-fg)}

/* Post list */
.sb-list{background:var(--sb-bg-alt);padding:32px 28px 64px;min-height:60vh}
.sb-list__wrap{max-width:1280px;margin:0 auto}
.sb-list__head{margin:0 0 28px;padding:0 0 20px;border-bottom:1px solid var(--sb-line-soft)}
.sb-list__kicker{font-size:13px;color:var(--sb-accent);text-transform:uppercase;letter-spacing:.08em;margin:0 0 6px;font-weight:600}
.sb-list__title{font-size:36px;font-weight:700;margin:0 0 8px;color:var(--sb-fg);letter-spacing:-.01em}
.sb-list__lede{color:var(--sb-mute);margin:0;font-size:15px}
.sb-list__items{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px;border:1px solid var(--sb-line);border-radius:var(--sb-radius-lg);overflow:hidden;background:var(--sb-line)}
.sb-list__item{background:#fff}
.sb-list__link{display:block;padding:18px 22px;color:var(--sb-fg)}
.sb-list__link:hover{background:var(--sb-bg);text-decoration:none}
.sb-list__t{display:block;font-size:16px;font-weight:500;margin-bottom:6px;line-height:1.45}
.sb-list__m{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:12px;color:var(--sb-faint);margin-bottom:4px}
.sb-list__tag{padding:1px 8px;background:var(--sb-accent-soft);color:var(--sb-accent);border-radius:3px;font-weight:500}
.sb-list__d{display:block;font-size:13px;color:var(--sb-mute);line-height:1.55;margin-top:4px}

/* Pager */
.sb-pager{display:flex;align-items:center;justify-content:center;gap:10px;margin:28px 0 0;flex-wrap:wrap}
.sb-pager__btn,.sb-pager__n{display:inline-flex;align-items:center;padding:7px 12px;font-size:13px;border-radius:var(--sb-radius);color:var(--sb-mute);border:1px solid var(--sb-line);background:#fff}
.sb-pager__btn:hover,.sb-pager__n:hover{border-color:var(--sb-accent);color:var(--sb-accent);text-decoration:none}
.sb-pager__btn.is-disabled{opacity:.45;pointer-events:none}
.sb-pager__n.is-current{background:var(--sb-accent);color:#fff;border-color:var(--sb-accent)}
.sb-pager__nums{display:flex;gap:4px;flex-wrap:wrap}

/* Page */
.sb-page{background:var(--sb-bg-alt);padding:32px 28px 64px;min-height:60vh}
.sb-page__wrap{max-width:1280px;margin:0 auto}
.sb-page__head{margin:0 0 28px;padding:0 0 20px;border-bottom:1px solid var(--sb-line-soft)}
.sb-page__title{font-size:36px;font-weight:700;margin:0 0 12px;color:var(--sb-fg);letter-spacing:-.01em}
.sb-page__lede{font-size:17px;color:var(--sb-mute);margin:0}

/* Download page custom blocks */
.dl-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px;margin:0 0 28px}
.dl-grid--3{grid-template-columns:repeat(3,1fr)}
.dl-card{background:#fff;border:1px solid var(--sb-line);border-radius:var(--sb-radius-lg);padding:20px;display:flex;flex-direction:column;gap:10px}
.dl-card__head{display:flex;align-items:center;gap:10px}
.dl-card__h{font-size:17px;font-weight:600;margin:0}
.dl-card__specs{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:4px;font-size:13px;color:var(--sb-mute)}
.dl-card__specs strong{color:var(--sb-fg)}
.dl-card__cta{display:inline-flex;align-items:center;justify-content:center;gap:6px;margin-top:8px;padding:8px 14px;background:var(--sb-accent);color:#fff;border-radius:var(--sb-radius);font-size:13px;font-weight:500}
.dl-card__cta:hover{background:var(--sb-accent-dk);text-decoration:none}
.dl-note{background:var(--sb-accent-soft);border:1px solid #d8d6ff;border-radius:var(--sb-radius-lg);padding:14px 18px;color:var(--sb-fg);margin:0 0 20px;font-size:14px}

/* 404 */
.sb-404{padding:96px 28px;text-align:center}
.sb-404__wrap{max-width:480px;margin:0 auto}
.sb-404__code{font-size:72px;font-weight:700;color:var(--sb-accent);margin:0}
.sb-404__cta{display:flex;gap:12px;justify-content:center;margin-top:24px}

/* Footer — left intro + right compact link-rows with inline separators */
.db-foot{background:var(--sb-bg-alt);color:var(--sb-mute);border-top:1px solid var(--sb-line);padding:40px 28px 20px;font-family:var(--sb-font)}
.db-foot__wrap{max-width:1280px;margin:0 auto;display:grid;grid-template-columns:340px 1fr;gap:56px;padding-bottom:24px;border-bottom:1px solid var(--sb-line-soft)}
.db-foot__intro{display:flex;flex-direction:column;gap:14px}
.db-foot__logo{display:flex;align-items:baseline;gap:10px}
.db-foot__name{font-size:17px;font-weight:700;color:var(--sb-fg);letter-spacing:-.01em}
.db-foot__sub{font-size:11px;color:var(--sb-faint);letter-spacing:.1em;font-weight:600}
.db-foot__tag{margin:0;font-size:13px;color:var(--sb-mute);line-height:1.55}
.db-foot__risk{display:flex;gap:10px;padding:10px 12px;background:var(--sb-bg);border-left:3px solid var(--sb-accent);border-radius:0 var(--sb-radius) var(--sb-radius) 0;font-size:12px;line-height:1.55;color:var(--sb-mute)}
.db-foot__risk-label{flex:none;font-size:10px;font-weight:700;letter-spacing:.12em;color:var(--sb-accent);padding-top:1px}
.db-foot__risk-text{flex:1}
.db-foot__lang{display:flex;flex-wrap:wrap;align-items:center;gap:6px;font-size:12px}
.db-foot__lang a{color:var(--sb-mute)}
.db-foot__lang a.is-active{color:var(--sb-accent);font-weight:600}
.db-foot__lang span{color:var(--sb-line)}
.db-foot__links{display:flex;flex-direction:column;gap:4px;padding-top:4px}
.db-foot__row{display:flex;align-items:baseline;flex-wrap:wrap;gap:14px;padding:10px 0;border-bottom:1px dashed var(--sb-line-soft)}
.db-foot__row:last-child{border-bottom:0}
.db-foot__rlabel{flex:none;width:72px;font-size:11px;font-weight:700;letter-spacing:.1em;color:var(--sb-faint);text-transform:uppercase}
.db-foot__row a{color:var(--sb-fg);font-size:13.5px;padding:2px 0;position:relative}
.db-foot__row a:hover{color:var(--sb-accent);text-decoration:none}
.db-foot__row a+a::before{content:"/";color:var(--sb-line);margin-right:12px;margin-left:-8px}
.db-foot__btm{max-width:1280px;margin:0 auto;padding-top:14px;display:flex;justify-content:center;gap:10px;font-size:11.5px;color:var(--sb-faint);flex-wrap:wrap;letter-spacing:.03em}
.db-foot__dot{color:var(--sb-line)}

/* Responsive */
@media (max-width:980px){
  .sb-hero__wrap{grid-template-columns:1fr}
  .sb-hero__side{padding-top:0}
  .sb-hero__title{font-size:38px}
  .sb-cols__wrap{grid-template-columns:1fr;gap:28px}
  .sb-article__wrap{grid-template-columns:1fr}
  .sb-side{display:none}
  .sb-try__body{grid-template-columns:1fr}
  .sb-try__steps{border-right:0;border-bottom:1px solid var(--sb-line);display:flex;overflow-x:auto}
  .sb-try__step{border-bottom:0;white-space:nowrap}
  .sb-try__info-dl{grid-template-columns:1fr}
  .sb-latest__list{grid-template-columns:1fr}
  .db-foot__wrap{grid-template-columns:1fr;gap:28px}
  .db-foot__row{flex-direction:column;gap:4px;align-items:flex-start}
  .db-foot__row a+a::before{display:none}
  .db-foot__rlabel{width:auto}
  .dl-grid--3{grid-template-columns:1fr}
}
@media (max-width:780px){
  .sb-header__mid{display:none}
  .sb-header__right .sb-link--ghost{display:none}
  .sb-burger{display:inline-flex}
  .sb-subnav{position:fixed;top:0;right:-100%;bottom:0;width:280px;background:#fff;flex-direction:column;align-items:stretch;padding:20px 20px 40px;border:0;border-left:1px solid var(--sb-line);transition:right .2s ease;z-index:100;overflow-y:auto;margin:0}
  .sb-subnav.is-open{right:0}
  .sb-subnav__close{display:inline-flex;align-self:flex-end}
  .sb-subnav__list{flex-direction:column;padding:0}
  .sb-subnav__lang{padding-top:20px;border-top:1px solid var(--sb-line);margin-top:12px;flex-wrap:wrap}
  .sb-overlay{position:fixed;inset:0;background:rgba(10,37,64,.4);z-index:99;display:none}
  .sb-overlay.is-open{display:block}
  .sb-hero__title{font-size:30px}
  .sb-article__title,.sb-list__title,.sb-page__title{font-size:26px}
}