/* =====================================================================
   Central de Ajuda Underblock — estilo público
   Marca: indigo #3032a3 · navy #0b0f19 · tipografia Manrope
   ===================================================================== */
:root{
  --primary:#3032a3;
  --primary-600:#272883;
  --primary-700:#1f2068;
  --primary-tint:#eef0fb;
  --primary-tint-2:#e3e6f7;
  --accent:#4c82f7;
  /* Gradiente-assinatura da Underblock (cyan -> azul -> roxo) */
  --gradient:linear-gradient(250deg,#3dcbf3,#4c81e6 49%,#574fdb);
  --header-bg:#070b16;
  --hero-1:#0a0f20;
  --hero-2:#070b14;
  --ink:#0b0f19;
  --text:#36415b;
  --muted:#565973;
  --faint:#9397ad;
  --border:#e5e8f2;
  --border-strong:#d4d7e5;
  --bg:#ffffff;
  --surface:#f7f8fe;
  --surface-2:#f3f6ff;
  --success:#15924a;
  --success-bg:#e7f7ee;
  --warning:#b4740a;
  --warning-bg:#fff6e4;
  --danger:#dc2626;
  --danger-bg:#fdeaea;
  --radius:16px;
  --radius-sm:11px;
  --radius-xs:8px;
  --pill:999px;
  --shadow-sm:0 1px 2px rgba(11,15,25,.05),0 1px 3px rgba(11,15,25,.06);
  --shadow-md:0 8px 24px rgba(11,15,25,.08);
  --shadow-lg:0 18px 50px rgba(11,15,25,.14);
  --maxw:1140px;
  --font:'Manrope',system-ui,-apple-system,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--font);color:var(--text);background:var(--bg);
  font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{color:var(--ink);line-height:1.2;margin:0 0 .4em;font-weight:800;letter-spacing:-.02em}
h1{font-size:clamp(2rem,4vw,2.9rem)}
h2{font-size:clamp(1.5rem,2.6vw,2rem)}
h3{font-size:1.15rem;font-weight:700}
p{margin:0 0 1rem}
a{color:var(--primary);text-decoration:none}
a:hover{color:var(--primary-600)}
img{max-width:100%;display:block}
ul,ol{margin:0 0 1rem;padding-left:1.25rem}
:focus-visible{outline:3px solid rgba(76,130,247,.5);outline-offset:2px;border-radius:6px}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px;width:100%}
.skip-link{position:absolute;left:-999px;top:0;background:var(--primary);color:#fff;padding:10px 16px;border-radius:0 0 8px 0;z-index:200}
.skip-link:focus{left:0}
/* Âncoras não ficam escondidas sob o header fixo (item do feedback) */
[id]{scroll-margin-top:86px}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important;animation-iteration-count:1 !important}
}

/* ---------------------------- Botões ---------------------------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-family:inherit;font-weight:700;font-size:.95rem;line-height:1;
  padding:12px 20px;border-radius:var(--pill);border:1.5px solid transparent;
  cursor:pointer;transition:transform .06s ease,background .15s ease,box-shadow .15s ease,border-color .15s;
  white-space:nowrap;
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--gradient);background-size:150% 150%;background-position:0 0;color:#fff;border:0;transition:transform .06s ease,box-shadow .18s ease,background-position .3s ease}
.btn-primary:hover{color:#fff;background-position:100% 0;box-shadow:0 8px 22px rgba(79,79,219,.32)}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--border-strong)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary)}
.btn-lg{padding:15px 28px;font-size:1.02rem}
.btn svg{flex:none}

/* ---------------------------- Chips ---------------------------- */
.chip{
  display:inline-flex;align-items:center;padding:7px 14px;border-radius:var(--pill);
  background:#fff;border:1.5px solid var(--border-strong);color:var(--text);
  font-size:.88rem;font-weight:600;transition:all .15s;
}
.chip:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-tint)}

/* ---------------------------- Header ---------------------------- */
.site-header{position:sticky;top:0;z-index:100;background:rgba(7,11,22,.9);backdrop-filter:saturate(1.3) blur(12px);border-bottom:1px solid rgba(255,255,255,.09)}
.header-inner{display:flex;align-items:center;gap:20px;min-height:66px}
.brand{display:flex;align-items:center;gap:10px}
.brand__logo{height:20px;width:auto;display:block}
.brand--footer .brand__logo{height:22px}
.brand__tag{font-size:.66rem;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:#c9d0ff;background:rgba(255,255,255,.1);padding:3px 8px;border-radius:var(--pill)}
.site-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{display:inline-flex;align-items:center;gap:5px;padding:9px 13px;border-radius:10px;color:rgba(255,255,255,.8);font-weight:600;font-size:.94rem;background:none;border:0;font-family:inherit;cursor:pointer;transition:all .14s}
.nav-link:hover{background:rgba(255,255,255,.1);color:#fff}
.site-header .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.28)}
.site-header .btn-ghost:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.5);color:#fff}
.nav-item.has-menu{position:relative}
.nav-menu{position:absolute;top:calc(100% + 8px);left:0;min-width:300px;background:#fff;border:1px solid var(--border);border-radius:var(--radius-sm);box-shadow:var(--shadow-lg);padding:8px;opacity:0;visibility:hidden;transform:translateY(-6px);transition:all .16s ease;z-index:50}
.nav-item.has-menu.open .nav-menu,.nav-item.has-menu:hover .nav-menu{opacity:1;visibility:visible;transform:translateY(0)}
.nav-menu a{display:block;padding:11px 13px;border-radius:9px;color:var(--ink)}
.nav-menu a:hover{background:var(--surface-2)}
.nav-menu a strong{display:block;font-weight:700;font-size:.95rem}
.nav-menu a span{display:block;color:var(--muted);font-size:.82rem;font-weight:500;margin-top:2px}
.nav-cta{display:flex;align-items:center;gap:10px;margin-left:10px}
.nav-toggle{display:none;flex-direction:column;gap:5px;width:44px;height:44px;border:1px solid rgba(255,255,255,.2);border-radius:11px;background:rgba(255,255,255,.06);margin-left:auto;cursor:pointer;align-items:center;justify-content:center}
.nav-toggle span{width:20px;height:2px;background:#fff;border-radius:2px;transition:.2s}

/* ---------------------------- Hero ---------------------------- */
.hero{position:relative;background:linear-gradient(180deg,var(--hero-1),var(--hero-2));color:#fff;padding:76px 0 88px;overflow:hidden}
.hero::after{content:"";position:absolute;inset:0;background:
  radial-gradient(55% 75% at 82% -15%,rgba(61,203,243,.20),transparent 60%),
  radial-gradient(50% 70% at 8% 115%,rgba(87,79,219,.26),transparent 60%),
  radial-gradient(40% 60% at 50% 40%,rgba(76,129,230,.10),transparent 70%);pointer-events:none}
.hero__inner{position:relative;text-align:center;max-width:780px}
.hero h1{color:#fff;margin-bottom:.3em}
.hero__subtitle{color:rgba(255,255,255,.82);font-size:1.12rem;margin:0 auto 28px;max-width:560px}
.hero__chips{display:flex;flex-wrap:wrap;gap:9px;justify-content:center;align-items:center;margin-top:22px}
.hero__chips-label{color:rgba(255,255,255,.7);font-size:.85rem;font-weight:600}
.hero .chip{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.22);color:#fff;backdrop-filter:blur(4px)}
.hero .chip:hover{background:#fff;color:var(--primary);border-color:#fff}

/* ---------------------------- Searchbox ---------------------------- */
.searchbox{position:relative;display:flex;align-items:center;gap:8px;background:#fff;border-radius:var(--pill);padding:7px 7px 7px 18px;box-shadow:var(--shadow-lg);max-width:640px;margin:0 auto}
.searchbox--big{padding:9px 9px 9px 20px}
.searchbox__icon{color:var(--faint);display:inline-flex;flex:none}
.searchbox__input{flex:1;border:0;outline:0;font-family:inherit;font-size:1.02rem;color:var(--ink);background:none;min-width:0;padding:10px 4px}
.searchbox__input::placeholder{color:var(--faint)}
.searchbox__btn{flex:none}
.search-suggest{position:absolute;top:calc(100% + 10px);left:0;right:0;background:#fff;border:1px solid var(--border);border-radius:var(--radius-sm);box-shadow:var(--shadow-lg);padding:8px;text-align:left;z-index:60;max-height:min(70vh,440px);overflow:auto}
.search-suggest a{display:flex;flex-direction:column;gap:2px;padding:11px 13px;border-radius:9px;color:var(--ink)}
.search-suggest a:hover,.search-suggest a.is-active{background:var(--surface-2)}
.search-suggest .s-title{font-weight:700;font-size:.95rem}
.search-suggest .s-meta{font-size:.78rem;color:var(--muted);display:flex;gap:8px}
.search-suggest .s-empty{padding:14px;color:var(--muted);font-size:.9rem}

/* ---------------------------- Sections ---------------------------- */
.section{padding:62px 0}
.section--tint{background:var(--surface)}
.section--start{padding-bottom:30px}
.section__head{margin-bottom:30px;max-width:640px}
.section__head h2{margin-bottom:.25em}
.section__head p{color:var(--muted);font-size:1.05rem;margin:0}
.section__foot{margin-top:28px;text-align:center}

/* ---------------------------- Steps ---------------------------- */
.steps{list-style:none;padding:0;margin:0;display:grid;gap:14px}
.steps--home{grid-template-columns:repeat(3,1fr);margin-bottom:28px}
.step-card{display:flex;gap:14px;align-items:flex-start;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:20px}
.step-card__num{flex:none;width:34px;height:34px;border-radius:10px;background:var(--primary-tint);color:var(--primary);font-weight:800;display:grid;place-items:center}
.step-card__title{font-weight:700;color:var(--ink);display:block;font-size:1rem}
a.step-card__title:hover{color:var(--primary)}
.step-card__body p{margin:4px 0 0;color:var(--muted);font-size:.9rem}

/* ---------------------------- Grids / cards ---------------------------- */
.grid{display:grid;gap:18px}
.grid--products{grid-template-columns:repeat(3,1fr)}
.grid--quick{grid-template-columns:repeat(3,1fr)}
.grid--popular{grid-template-columns:repeat(2,1fr)}
.product-card{position:relative;display:flex;flex-direction:column;gap:6px;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:26px 24px;color:var(--ink);transition:transform .14s ease,box-shadow .16s ease,border-color .16s;overflow:hidden}
.product-card::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--card-accent,var(--primary))}
.product-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:transparent;color:var(--ink)}
.product-card__icon{width:52px;height:52px;border-radius:14px;background:color-mix(in srgb,var(--card-accent,#3032a3) 12%,#fff);color:var(--card-accent,var(--primary));display:grid;place-items:center;margin-bottom:8px}
.product-card__thumb{display:block;width:100%;aspect-ratio:16/9;border-radius:12px;overflow:hidden;margin-bottom:12px;background:var(--surface-2)}
.product-card__thumb img{width:100%;height:100%;object-fit:cover;display:block}
.product-hero__thumb{flex:none;width:72px;height:72px;border-radius:16px;overflow:hidden;background:var(--surface-2);box-shadow:var(--shadow-sm)}
.product-hero__thumb img{width:100%;height:100%;object-fit:cover;display:block}
.product-card__name{margin:0}
.product-card__tagline{color:var(--muted);font-size:.95rem;margin:0;flex:1}
.product-card__meta{color:var(--muted);font-size:.82rem;font-weight:600;margin-top:4px}
.product-card__cta{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-weight:700;font-size:.92rem;margin-top:12px}
.product-card:hover .product-card__cta svg{transform:translateX(3px)}
.product-card__cta svg{transition:transform .15s}

.quick-card{display:flex;align-items:center;gap:14px;background:#fff;border:1px solid var(--border);border-radius:var(--radius-sm);padding:16px 18px;color:var(--ink);transition:all .15s}
.quick-card:hover{border-color:var(--primary);box-shadow:var(--shadow-sm);color:var(--ink);transform:translateY(-2px)}
.quick-card__icon{flex:none;width:42px;height:42px;border-radius:11px;background:var(--primary-tint);color:var(--primary);display:grid;place-items:center}
.quick-card__text{display:flex;flex-direction:column;gap:1px;min-width:0}
.quick-card__text strong{font-weight:700;font-size:.96rem}
.quick-card__text span{color:var(--muted);font-size:.84rem}
.quick-card__ext{margin-left:auto;color:var(--faint);font-size:1.1rem}

/* ---------------------------- Tabs + Accordion ---------------------------- */
.tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px}
.tab{padding:9px 16px;border-radius:var(--pill);border:1.5px solid var(--border-strong);background:#fff;color:var(--text);font-family:inherit;font-weight:600;font-size:.9rem;cursor:pointer;transition:all .14s}
.tab:hover{border-color:var(--primary);color:var(--primary)}
.tab.is-active{background:var(--primary);border-color:var(--primary);color:#fff}
.accordion{border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;background:#fff}
.accordion__item{border-bottom:1px solid var(--border)}
.accordion__item:last-child{border-bottom:0}
.accordion__item[hidden]{display:none}
.accordion__item h3{margin:0;font-size:inherit;font-weight:inherit}
.accordion__trigger{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:19px 22px;background:none;border:0;font-family:inherit;font-size:1.03rem;font-weight:700;color:var(--ink);text-align:left;cursor:pointer}
.accordion__trigger:hover{background:var(--surface-2)}
.accordion__chevron{flex:none;color:var(--faint);transition:transform .2s}
.accordion__trigger[aria-expanded="true"] .accordion__chevron{transform:rotate(180deg);color:var(--primary)}
.accordion__panel{display:grid;grid-template-rows:0fr;transition:grid-template-rows .22s ease}
.accordion__panel.open{grid-template-rows:1fr}
.accordion__content{overflow:hidden;padding:0 22px;color:var(--text)}
.accordion__panel.open .accordion__content{padding-bottom:20px}
.accordion__content p:first-child{margin-top:0}

/* ---------------------------- Link-arrow ---------------------------- */
.link-arrow{display:inline-flex;align-items:center;gap:5px;font-weight:700;font-size:.92rem}
.link-arrow svg{transition:transform .15s}
.link-arrow:hover svg{transform:translateX(3px)}

/* ---------------------------- Breadcrumbs ---------------------------- */
.breadcrumbs{background:var(--surface);border-bottom:1px solid var(--border)}
.breadcrumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none;max-width:var(--maxw);margin:0 auto;padding:13px 24px;font-size:.86rem}
.breadcrumbs li{display:flex;align-items:center;gap:8px}
.breadcrumbs a{color:var(--muted);font-weight:600}
.breadcrumbs a:hover{color:var(--primary)}
.breadcrumbs [aria-current]{color:var(--ink);font-weight:700}
.breadcrumbs__sep{color:var(--faint)}

/* ---------------------------- Article-item lists ---------------------------- */
.article-list{display:grid;gap:10px}
.article-item{display:flex;align-items:center;gap:15px;background:#fff;border:1px solid var(--border);border-radius:var(--radius-sm);padding:16px 18px;color:var(--ink);transition:all .14s}
.article-item:hover{border-color:var(--primary);box-shadow:var(--shadow-sm);transform:translateY(-1px);color:var(--ink)}
.article-item__icon{flex:none;width:40px;height:40px;border-radius:10px;background:var(--primary-tint);color:var(--primary);display:grid;place-items:center}
.article-item__body{flex:1;min-width:0}
.article-item__title{display:block;font-weight:700;font-size:1rem}
.article-item__excerpt{display:block;color:var(--muted);font-size:.88rem;margin-top:2px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-item__meta{display:flex;gap:8px;margin-top:6px}
.article-item__meta span{font-size:.72rem;font-weight:600;color:var(--muted);background:var(--surface-2);padding:2px 8px;border-radius:var(--pill)}
.article-item__arrow{flex:none;color:var(--faint)}
.article-item:hover .article-item__arrow{color:var(--primary);transform:translateX(2px)}

/* ---------------------------- Support ---------------------------- */
.support{background:linear-gradient(180deg,var(--surface),#fff);border-top:1px solid var(--border);padding:60px 0}
.support__head{text-align:center;max-width:560px;margin:0 auto 34px}
.support__head p{color:var(--muted);font-size:1.05rem;margin:0}
.support__cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;align-items:stretch}
.support-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:26px 24px;display:flex;flex-direction:column;gap:8px}
.support-card h3{margin:0}
.support-card p{color:var(--muted);font-size:.92rem;margin:0;flex:1}
.support-card .btn{margin-top:14px;align-self:flex-start}
.support-card__icon{width:48px;height:48px;border-radius:13px;background:var(--primary-tint);color:var(--primary);display:grid;place-items:center;margin-bottom:6px}
.support-card--info{background:var(--ink);color:#fff}
.support-card--info h3{color:#fff}
.support-meta{list-style:none;padding:0;margin:8px 0 0;display:grid;gap:12px}
.support-meta li{display:flex;flex-direction:column}
.support-meta span{color:rgba(255,255,255,.6);font-size:.8rem}
.support-meta strong{font-size:1.02rem}
.security-notice{display:flex;align-items:center;gap:10px;justify-content:center;margin:28px auto 0;max-width:620px;background:var(--warning-bg);color:var(--warning);border:1px solid #f3dca0;border-radius:var(--radius-sm);padding:13px 18px;font-size:.9rem;font-weight:600}
.security-notice svg{flex:none}

/* ---------------------------- Footer ---------------------------- */
.site-footer{background:var(--ink);color:#aab;padding:46px 0 30px}
.footer-inner{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap;padding-bottom:26px;border-bottom:1px solid rgba(255,255,255,.1)}
.brand--footer .brand__word{color:#fff}
.footer-sub{color:#8b90a8;font-size:.9rem;max-width:340px;margin:12px 0 0}
.footer-links{display:flex;flex-wrap:wrap;gap:8px 22px;align-items:flex-start}
.footer-links a{color:#c7cbe0;font-weight:600;font-size:.9rem}
.footer-links a:hover{color:#fff}
.footer-legal{padding-top:22px;color:#9aa0bd;font-size:.8rem}
.footer-legal p{margin:0 0 6px}
.footer-copy{color:#848bab}

/* ---------------------------- Responsivo ---------------------------- */
@media (max-width:900px){
  .grid--products,.grid--quick,.steps--home,.support__cards{grid-template-columns:1fr 1fr}
}
@media (max-width:760px){
  .nav-toggle{display:flex}
  .site-nav{position:fixed;inset:66px 0 auto;background:var(--header-bg);flex-direction:column;align-items:stretch;gap:2px;padding:14px 20px 22px;border-bottom:1px solid rgba(255,255,255,.1);box-shadow:var(--shadow-lg);transform:translateY(-130%);transition:transform .22s ease;margin:0}
  .site-nav.open{transform:translateY(0)}
  .nav-link{padding:13px;border-radius:11px}
  .nav-menu{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;border:0;background:transparent;padding:4px 0 4px 10px;min-width:0}
  .nav-menu a{color:rgba(255,255,255,.85)}
  .nav-menu a:hover{background:rgba(255,255,255,.08)}
  .nav-menu a span{color:rgba(255,255,255,.55)}
  .nav-item.has-menu .nav-menu{display:none}
  .nav-item.has-menu.open .nav-menu{display:block}
  .nav-cta{flex-direction:column;align-items:stretch;margin:10px 0 0}
  .nav-cta .btn{width:100%}
  .grid--products,.grid--quick,.grid--popular,.steps--home,.support__cards{grid-template-columns:1fr}
  .hero{padding:52px 0 64px}
  .section{padding:46px 0}
  .footer-inner{flex-direction:column;gap:18px}
}
@media (max-width:420px){
  .wrap{padding:0 16px}
  .searchbox{flex-wrap:wrap;border-radius:var(--radius);padding:12px}
  .searchbox__btn{width:100%}
  .brand__tag{display:none}
}

/* =====================================================================
   Páginas internas (produto, categoria, artigo, busca, ranking)
   ===================================================================== */
.page-head{padding:40px 0 10px}
.page-head__sub{color:var(--muted);font-size:1.05rem;margin:0;max-width:640px}
.page-head--search .searchbox{margin:18px 0 0}

.page-layout{display:grid;grid-template-columns:240px 1fr;gap:40px;padding-top:36px;padding-bottom:40px;align-items:start}
.page-layout--single{grid-template-columns:minmax(0,820px);justify-content:center}
.page-main{min-width:0}

/* Sidebar TOC */
.toc{position:sticky;top:90px}
.toc__title{font-size:.78rem;text-transform:uppercase;letter-spacing:.08em;color:var(--faint);font-weight:700;margin:0 0 10px}
.toc nav{display:flex;flex-direction:column;gap:2px;border-left:2px solid var(--border)}
.toc a{padding:7px 14px;color:var(--muted);font-size:.9rem;font-weight:600;border-left:2px solid transparent;margin-left:-2px}
.toc a:hover{color:var(--primary);border-left-color:var(--primary)}

/* Product hero */
.product-hero{background:var(--surface);border-bottom:1px solid var(--border);padding:34px 0 30px}
.product-hero__top{display:flex;align-items:center;gap:16px;margin-bottom:18px}
.product-hero__icon{flex:none;width:58px;height:58px;border-radius:15px;background:color-mix(in srgb,var(--card-accent,#3032a3) 14%,#fff);color:var(--card-accent,var(--primary));display:grid;place-items:center}
.product-hero h1{margin:0}
.product-hero__tagline{color:var(--muted);margin:4px 0 0;font-size:1.05rem}
.product-hero__actions{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px}

/* Category block */
.cat-block{margin-bottom:44px;scroll-margin-top:88px}
.cat-block__head{margin-bottom:18px}
.cat-block__head h2{margin-bottom:.2em}
.cat-block__head p{color:var(--muted);margin:0}

/* Checklist (primeiros passos) */
.progress{display:flex;align-items:center;gap:14px;margin-bottom:16px}
.progress__bar{flex:1;height:8px;background:var(--border);border-radius:var(--pill);overflow:hidden}
.progress__bar span{display:block;height:100%;background:var(--gradient);border-radius:var(--pill);transition:width .3s ease}
.progress__label{font-size:.82rem;color:var(--muted);font-weight:600;white-space:nowrap}
.checklist{list-style:none;padding:0;margin:0;display:grid;gap:10px;counter-reset:step}
.checklist__item{display:flex;align-items:center;gap:14px;background:#fff;border:1px solid var(--border);border-radius:var(--radius-sm);padding:14px 16px;transition:all .14s}
.checklist__item:hover{border-color:var(--primary);box-shadow:var(--shadow-sm)}
.checklist__item.is-done{background:var(--success-bg);border-color:#bfe6cd}
.checklist__check{position:relative;flex:none;cursor:pointer}
.checklist__check input{position:absolute;opacity:0;width:100%;height:100%;cursor:pointer;margin:0}
.checklist__num{position:relative;display:grid;place-items:center;width:32px;height:32px;border-radius:9px;background:var(--primary-tint);color:var(--primary);font-weight:800;font-size:.9rem;transition:all .15s}
.checklist__item.is-done .checklist__num{background:var(--success);color:transparent}
.checklist__item.is-done .checklist__num::after{content:"✓";position:absolute;inset:0;display:grid;place-items:center;color:#fff;font-size:1rem;font-weight:800}
.checklist__link{flex:1;min-width:0;color:var(--ink)}
.checklist__title{display:block;font-weight:700}
.checklist__item.is-done .checklist__title{text-decoration:line-through;color:var(--muted)}
.checklist__desc{display:block;color:var(--muted);font-size:.86rem;margin-top:1px}
.badge{display:inline-flex;align-items:center;font-size:.72rem;font-weight:700;padding:3px 9px;border-radius:var(--pill);background:var(--primary-tint);color:var(--primary);white-space:nowrap}
.badge--video{background:#eaf1ff;color:var(--accent)}

/* Tutorials grid */
.grid--tutorials{grid-template-columns:repeat(2,1fr)}
.tutorial-card{position:relative;display:flex;flex-direction:column;gap:7px;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:20px;color:var(--ink);transition:all .14s}
.tutorial-card:hover{border-color:var(--primary);box-shadow:var(--shadow-md);transform:translateY(-3px);color:var(--ink)}
.tutorial-card .badge{align-self:flex-start}
.tutorial-card h3{margin:0;font-size:1.05rem}
.tutorial-card p{color:var(--muted);font-size:.9rem;margin:0;flex:1}
.tutorial-card__cta{color:var(--primary);font-weight:700;font-size:.9rem;margin-top:6px}

/* Help CTA inline */
.help-cta{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;background:var(--primary-tint);border:1px solid var(--primary-tint-2);border-radius:var(--radius);padding:24px 26px;margin-top:10px}
.help-cta h3{margin:0 0 3px}
.help-cta p{margin:0;color:var(--muted)}

/* Article page */
.article-layout{grid-template-columns:minmax(0,1fr) 300px}
.article{max-width:760px}
.article__sequence{display:inline-block;font-size:.82rem;font-weight:700;color:var(--primary);background:var(--primary-tint);padding:5px 12px;border-radius:var(--pill);margin:0 0 14px}
.article__sequence--muted{color:var(--muted);background:var(--surface-2)}
.article__title{margin:0 0 14px}
.article__meta{display:flex;flex-wrap:wrap;align-items:center;gap:16px;color:var(--muted);font-size:.86rem;padding-bottom:20px;border-bottom:1px solid var(--border);margin-bottom:24px}
.edit-btn{display:inline-flex;align-items:center;gap:6px;font-size:.82rem;font-weight:700;color:var(--primary);background:var(--primary-tint);border:1px solid var(--primary-tint-2);border-radius:var(--pill);padding:5px 12px;transition:all .14s}
.edit-btn:hover{background:var(--primary);color:#fff;border-color:var(--primary)}
.product-hero__top .edit-btn{margin-left:auto;align-self:flex-start}
.page-head__row{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.page-head__row h1{margin:0}
.article__video{margin:0 0 24px}
.video-embed{position:relative;padding-top:56.25%;border-radius:var(--radius);overflow:hidden;background:#000;box-shadow:var(--shadow-md)}
.video-embed iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.video-card{display:flex;align-items:center;gap:14px;background:var(--ink);color:#fff;border-radius:var(--radius);padding:18px 22px;font-weight:700}
.video-card:hover{color:#fff;background:#1a2036}
.video-card__play{display:grid;place-items:center;width:40px;height:40px;border-radius:50%;background:var(--primary);color:#fff;flex:none}
.article__body{font-size:1.05rem;color:var(--text)}
.article__body h2{font-size:1.4rem;margin:1.6em 0 .5em}
.article__body h3{font-size:1.15rem;margin:1.4em 0 .4em}
.article__body img{border-radius:var(--radius);margin:1em 0}
.article__body a{text-decoration:underline;text-underline-offset:2px}
.article__body ul,.article__body ol{margin:0 0 1.1em;padding-left:1.4em}
.article__body li{margin-bottom:.4em}
.article__body blockquote{border-left:3px solid var(--primary);background:var(--surface);margin:1.2em 0;padding:12px 18px;border-radius:0 8px 8px 0;color:var(--muted)}
.source-link{display:inline-flex;align-items:center;gap:8px;margin-top:20px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);padding:12px 16px;color:var(--ink);font-weight:600;font-size:.92rem}
.source-link:hover{border-color:var(--primary);color:var(--primary)}
.article__tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.tag{font-size:.82rem;font-weight:600;color:var(--muted);background:var(--surface-2);padding:5px 11px;border-radius:var(--pill)}
.tag:hover{color:var(--primary);background:var(--primary-tint)}

.article-nav{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:30px}
.article-nav__link{display:flex;flex-direction:column;gap:3px;border:1px solid var(--border);border-radius:var(--radius-sm);padding:14px 16px;color:var(--ink)}
.article-nav__link:hover{border-color:var(--primary);color:var(--ink);box-shadow:var(--shadow-sm)}
.article-nav__link span{font-size:.8rem;color:var(--muted);font-weight:600}
.article-nav__link strong{font-size:.95rem}
.article-nav__link--next{text-align:right}

/* Helpful vote */
.helpful{margin-top:34px;padding:24px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);text-align:center}
.helpful__q{font-weight:700;color:var(--ink);margin:0 0 14px;font-size:1.05rem}
.helpful__btns{display:flex;gap:12px;justify-content:center}
.helpful__btn{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1.5px solid var(--border-strong);border-radius:var(--pill);padding:10px 22px;font-family:inherit;font-weight:700;color:var(--ink);cursor:pointer;transition:all .14s}
.helpful__btn:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-tint)}
.helpful.voted .helpful__btns{display:none}
.helpful__result{margin:12px 0 0;color:var(--success);font-weight:700}
.helpful__done{margin:0;color:var(--muted);font-weight:600}
.helpful__extra{margin-top:16px}
.helpful__extra p{color:var(--muted);margin:0 0 10px}

/* Sidebar boxes */
.article-side{display:flex;flex-direction:column;gap:18px;position:sticky;top:90px}
.side-box{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:20px}
.side-box__title{font-size:1rem;margin:0 0 12px}
.side-list{list-style:none;padding:0;margin:0;display:grid;gap:2px}
.side-list li{border-bottom:1px solid var(--border)}
.side-list li:last-child{border-bottom:0}
.side-list a{display:block;padding:10px 0;color:var(--text);font-weight:600;font-size:.92rem}
.side-list a:hover{color:var(--primary)}
.side-box--cta{background:var(--primary-tint);border-color:var(--primary-tint-2)}
.side-box--cta p{color:var(--muted);font-size:.92rem;margin:0 0 14px}
.side-box--cta .btn{width:100%}

/* Search + ranking + states */
.search-count{color:var(--muted);font-weight:600;margin-bottom:16px}
.empty-state{color:var(--muted);text-align:center;padding:30px}
.empty-state--box{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:40px 24px}
.empty-state--box h2{margin-bottom:.4em}
.empty-state--box .btn{margin-top:14px}
.ranking{list-style:none;padding:0;margin:0;counter-reset:rank;display:grid;gap:10px}
.ranking__item{display:flex;align-items:center;gap:16px}
.ranking__pos{flex:none;width:36px;height:36px;border-radius:10px;background:var(--primary-tint);color:var(--primary);font-weight:800;display:grid;place-items:center}
.ranking__item:nth-child(-n+3) .ranking__pos{background:var(--primary);color:#fff}
.ranking__link{flex:1;display:flex;flex-direction:column;gap:3px;background:#fff;border:1px solid var(--border);border-radius:var(--radius-sm);padding:14px 18px;color:var(--ink)}
.ranking__link:hover{border-color:var(--primary);color:var(--ink);box-shadow:var(--shadow-sm)}
.ranking__title{font-weight:700}
.ranking__meta{display:flex;gap:10px;font-size:.78rem;color:var(--muted)}

/* Error page */
.error-page{text-align:center;padding:70px 0}
.error-page__code{font-size:4rem;font-weight:800;color:var(--primary);letter-spacing:-.04em}
.error-page .searchbox{margin:22px auto}
.error-page__actions{margin-top:10px}

@media (max-width:900px){
  .page-layout,.article-layout{grid-template-columns:1fr}
  .toc{display:none}
  .article-side{position:static;flex-direction:column}
  .grid--tutorials{grid-template-columns:1fr}
}
@media (max-width:560px){
  .article-nav{grid-template-columns:1fr}
  .article-nav__link--next{text-align:left}
  .help-cta{flex-direction:column;align-items:flex-start}
}