:root{
  --ink:#101828;--ink-2:#344054;--muted:#667085;--line:#e4e7ec;--surface:#fff;--surface-2:#f8fafc;
  --blue:#2563eb;--blue-dark:#1d4ed8;--cyan:#0891b2;--purple:#7c3aed;--green:#039855;--red:#d92d20;
  --shadow-sm:0 1px 2px rgba(16,24,40,.06),0 1px 3px rgba(16,24,40,.08);
  --shadow-md:0 12px 28px rgba(16,24,40,.10),0 4px 10px rgba(16,24,40,.05);
  --radius:18px;--radius-sm:12px;--container:1180px;--focus:0 0 0 4px rgba(37,99,235,.16);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:92px}
body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--surface);line-height:1.6;-webkit-font-smoothing:antialiased}
body.menu-open{overflow:hidden}
a{color:inherit;text-decoration:none}a:hover{text-decoration:none}
img,svg{display:block;max-width:100%}button,input,select,textarea{font:inherit}
button{cursor:pointer}
:focus-visible{outline:none;box-shadow:var(--focus)}
.container{width:min(calc(100% - 40px),var(--container));margin-inline:auto}
.skip-link{position:fixed;left:16px;top:-80px;background:#fff;padding:10px 14px;border-radius:10px;z-index:9999;box-shadow:var(--shadow-md);font-weight:700}.skip-link:focus{top:12px}
.site-header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.92);backdrop-filter:saturate(180%) blur(16px);border-bottom:1px solid rgba(228,231,236,.9)}
.header-inner{height:74px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:11px;font-weight:800;letter-spacing:-.02em;white-space:nowrap}.brand img{width:36px;height:36px}.brand span{font-size:18px}
.nav{display:flex;align-items:center;gap:7px}.nav a{color:var(--ink-2);font-weight:650;font-size:14px;padding:9px 10px;border-radius:9px}.nav a:hover,.nav a[aria-current="page"]{background:#f2f4f7;color:var(--ink)}
.nav-cta{background:var(--ink)!important;color:#fff!important;padding-inline:14px!important}.nav-cta:hover{background:#1d2939!important}
.menu-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:10px;width:42px;height:42px;align-items:center;justify-content:center}.menu-toggle svg{width:21px}
.mobile-nav{display:none}
.hero{position:relative;overflow:hidden;padding:86px 0 44px;background:linear-gradient(180deg,#f8fbff 0%,#fff 72%)}
.hero:before{content:"";position:absolute;inset:0;background-image:radial-gradient(circle at 14% 15%,rgba(37,99,235,.08) 0,transparent 22%),radial-gradient(circle at 86% 5%,rgba(124,58,237,.08) 0,transparent 24%),linear-gradient(rgba(16,24,40,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(16,24,40,.025) 1px,transparent 1px);background-size:auto,auto,32px 32px,32px 32px;pointer-events:none}
.hero-grid{position:relative;display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center}.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:#175cd3;background:#eff8ff;border:1px solid #b2ddff;border-radius:999px;padding:7px 10px}.eyebrow-dot{width:8px;height:8px;border-radius:50%;background:conic-gradient(from 0deg,#ef4444,#22c55e,#3b82f6,#ef4444)}
h1{font-size:clamp(42px,6vw,68px);line-height:1.04;letter-spacing:-.055em;margin:20px 0 20px}.hero p{font-size:19px;color:var(--ink-2);max-width:700px;margin:0 0 28px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap}.btn{border:1px solid transparent;display:inline-flex;align-items:center;justify-content:center;gap:9px;border-radius:11px;padding:12px 16px;font-weight:750;transition:.18s ease;min-height:46px}.btn-primary{background:var(--ink);color:#fff}.btn-primary:hover{background:#1d2939;transform:translateY(-1px)}.btn-secondary{background:#fff;border-color:var(--line);color:var(--ink);box-shadow:var(--shadow-sm)}.btn-secondary:hover{background:#f9fafb}.btn svg{width:18px;height:18px}
.hero-trust{display:flex;gap:18px;flex-wrap:wrap;margin-top:24px;color:var(--muted);font-size:13px;font-weight:650}.hero-trust span{display:inline-flex;align-items:center;gap:7px}.hero-trust svg{width:16px;color:var(--green)}
.hero-visual{position:relative;min-height:420px}.visual-card{position:absolute;inset:20px 0 0 30px;background:#fff;border:1px solid var(--line);border-radius:28px;box-shadow:0 30px 80px rgba(16,24,40,.12);overflow:hidden}.visual-top{height:56px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:7px;padding:0 20px}.visual-top i{width:9px;height:9px;border-radius:50%;background:#d0d5dd}.visual-content{padding:24px}.visual-preview{height:185px;border-radius:18px;background:#3b82f6;position:relative;overflow:hidden}.visual-preview:after{content:"#3B82F6";position:absolute;right:16px;bottom:14px;color:#fff;background:rgba(16,24,40,.42);padding:6px 9px;border-radius:8px;font:700 12px ui-monospace,SFMono-Regular,Menlo,monospace}.visual-row{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:14px}.visual-chip{border:1px solid var(--line);border-radius:12px;padding:10px}.visual-chip b{display:block;font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}.visual-chip span{font:700 13px ui-monospace,SFMono-Regular,Menlo,monospace}.orbit{position:absolute;border-radius:50%;filter:blur(.1px)}.orbit.r{width:90px;height:90px;background:rgba(239,68,68,.18);right:-30px;top:0}.orbit.g{width:115px;height:115px;background:rgba(34,197,94,.16);left:0;bottom:-20px}.orbit.b{width:75px;height:75px;background:rgba(59,130,246,.17);left:-5px;top:70px}
.section{padding:84px 0}.section-soft{background:var(--surface-2);border-block:1px solid #eef2f6}.section-head{max-width:760px;margin-bottom:36px}.kicker{color:#175cd3;font-weight:800;font-size:13px;text-transform:uppercase;letter-spacing:.08em}.section h2{font-size:clamp(31px,4vw,44px);line-height:1.12;letter-spacing:-.04em;margin:8px 0 14px}.section-head p{font-size:17px;color:var(--muted);margin:0}.tool-shell{display:grid;grid-template-columns:1.1fr .9fr;gap:18px;background:#eef2f6;border:1px solid var(--line);padding:18px;border-radius:26px;box-shadow:var(--shadow-md)}.panel{min-width:0;background:#fff;border:1px solid #e6eaf0;border-radius:20px;padding:22px}.panel-title{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:18px}.panel-title h3{margin:0;font-size:18px;letter-spacing:-.02em}.status-pill{font-size:12px;font-weight:750;color:#027a48;background:#ecfdf3;border:1px solid #abefc6;border-radius:999px;padding:5px 9px}.picker-stage{position:relative;height:250px;border-radius:18px;overflow:hidden;background:#3b82f6;border:1px solid rgba(16,24,40,.08);display:flex;align-items:flex-end;padding:16px}.picker-stage:after{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(255,255,255,.10),transparent 45%,rgba(0,0,0,.10))}.picker-stage-label{position:relative;z-index:2;background:rgba(16,24,40,.5);color:#fff;border:1px solid rgba(255,255,255,.22);backdrop-filter:blur(8px);border-radius:10px;padding:8px 10px;font:750 13px ui-monospace,SFMono-Regular,Menlo,monospace}.picker-input{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:pointer;z-index:3}
.field{margin-top:16px}.label-row{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:7px}.label-row label,.field>label{font-weight:700;font-size:13px;color:var(--ink-2)}.hint{font-size:12px;color:var(--muted)}.input-wrap{display:flex;align-items:center;border:1px solid #d0d5dd;border-radius:11px;background:#fff;transition:.15s}.input-wrap:focus-within{border-color:#84adff;box-shadow:var(--focus)}.input-wrap input{border:0;outline:0;flex:1;min-width:0;padding:11px 12px;background:transparent;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.input-wrap button{border:0;background:transparent;padding:8px 10px;color:var(--muted);border-left:1px solid var(--line);font-weight:700;font-size:12px}.error-text{min-height:19px;margin-top:5px;color:var(--red);font-size:12px;font-weight:650}
.rgb-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.number-field label{display:block;font-size:12px;font-weight:800;color:var(--muted);margin:0 0 6px}.number-field input{width:100%;border:1px solid #d0d5dd;border-radius:10px;padding:10px 11px;font-variant-numeric:tabular-nums}.number-field input:focus{border-color:#84adff;outline:0;box-shadow:var(--focus)}.range-stack{display:grid;gap:8px;margin-top:14px}.range-row{display:grid;grid-template-columns:20px 1fr 40px;gap:9px;align-items:center;font-size:12px;font-weight:800;color:var(--muted)}input[type="range"]{width:100%;accent-color:#475467}.alpha-row{display:grid;grid-template-columns:1fr 72px;gap:10px;align-items:end}.alpha-number{width:100%;border:1px solid #d0d5dd;border-radius:10px;padding:10px 11px}.tool-actions{display:flex;gap:9px;flex-wrap:wrap;margin-top:18px}.tool-actions .btn{padding:10px 13px;min-height:42px;font-size:13px}.btn-light{background:#fff;border-color:var(--line)}.btn-light:hover{background:#f8fafc}.btn-blue{background:#175cd3;color:#fff}.btn-blue:hover{background:#1849a9}
.output-preview{height:130px;border-radius:16px;border:1px solid var(--line);display:grid;grid-template-columns:1fr 1fr;overflow:hidden;margin-bottom:16px}.contrast-half{display:flex;align-items:center;justify-content:center;font-weight:800;font-size:15px}.contrast-half.light{background:#fff;color:var(--selected,#3b82f6)}.contrast-half.dark{background:#101828;color:var(--selected,#3b82f6)}.output-grid{display:grid;grid-template-columns:1fr 1fr;gap:9px}.code-card{border:1px solid var(--line);border-radius:12px;padding:10px 10px 10px 12px;display:flex;align-items:center;gap:9px;justify-content:space-between;min-width:0}.code-meta{min-width:0}.code-meta b{display:block;font-size:10px;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}.code-meta code{display:block;font-size:12px;font-weight:750;color:var(--ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:190px}.copy-btn{flex:0 0 auto;border:0;background:#f2f4f7;color:#475467;border-radius:8px;width:32px;height:32px;display:grid;place-items:center}.copy-btn:hover{background:#e4e7ec}.copy-btn svg{width:15px}.contrast-box{margin-top:10px;border:1px solid var(--line);border-radius:14px;padding:13px}.contrast-score{display:flex;align-items:center;justify-content:space-between;gap:10px}.contrast-score strong{font-size:20px}.badge{font-size:11px;font-weight:800;padding:4px 7px;border-radius:999px}.badge.pass{background:#ecfdf3;color:#027a48}.badge.fail{background:#fef3f2;color:#b42318}.contrast-details{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:9px;color:var(--muted);font-size:12px}.history{margin-top:16px}.history-title{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}.history-title b{font-size:13px}.history-title button{border:0;background:transparent;color:#175cd3;font-size:12px;font-weight:750}.swatches{display:flex;gap:8px;flex-wrap:wrap}.swatch{width:32px;height:32px;border-radius:9px;border:2px solid #fff;box-shadow:0 0 0 1px rgba(16,24,40,.15);position:relative}.swatch:hover:after{content:attr(data-color);position:absolute;bottom:40px;left:50%;transform:translateX(-50%);background:#101828;color:#fff;font-size:11px;padding:4px 6px;border-radius:6px;white-space:nowrap;z-index:20}.copy-toast{position:fixed;right:20px;bottom:20px;background:#101828;color:#fff;padding:11px 14px;border-radius:10px;font-weight:700;font-size:13px;box-shadow:var(--shadow-md);opacity:0;transform:translateY(8px);pointer-events:none;transition:.2s;z-index:3000}.copy-toast.show{opacity:1;transform:translateY(0)}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.feature-card{border:1px solid var(--line);border-radius:18px;padding:22px;background:#fff;box-shadow:var(--shadow-sm)}.icon-box{width:42px;height:42px;border-radius:11px;display:grid;place-items:center;background:#eff8ff;color:#175cd3;margin-bottom:16px}.icon-box svg{width:21px}.feature-card h3{margin:0 0 7px;font-size:17px}.feature-card p{margin:0;color:var(--muted);font-size:14px}.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.step{padding:24px;border-left:2px solid #d0d5dd;background:#fff}.step-num{font:800 12px ui-monospace,SFMono-Regular,Menlo,monospace;color:#175cd3;letter-spacing:.08em}.step h3{margin:10px 0 7px}.step p{margin:0;color:var(--muted);font-size:14px}.use-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.use-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px}.use-card b{display:block;margin-bottom:6px}.use-card p{margin:0;color:var(--muted);font-size:13px}.format-table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:16px}.format-table{width:100%;border-collapse:collapse;min-width:700px}.format-table th,.format-table td{text-align:left;padding:14px 16px;border-bottom:1px solid var(--line);font-size:14px}.format-table th{background:#f8fafc;font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:#475467}.format-table tr:last-child td{border-bottom:0}.format-table code{background:#f2f4f7;padding:4px 6px;border-radius:6px;font-size:12px}.tips-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.tip{display:flex;gap:13px;padding:18px;border:1px solid var(--line);border-radius:15px}.tip-mark{width:28px;height:28px;flex:0 0 28px;border-radius:50%;background:#ecfdf3;color:#027a48;display:grid;place-items:center;font-weight:900}.tip h3{font-size:15px;margin:0 0 4px}.tip p{margin:0;color:var(--muted);font-size:13px}.faq-list{display:grid;gap:10px;max-width:860px}.faq-list details{border:1px solid var(--line);border-radius:14px;background:#fff;padding:0 18px}.faq-list summary{cursor:pointer;font-weight:750;padding:17px 0;list-style:none;display:flex;justify-content:space-between;gap:16px}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary:after{content:"+";font-size:22px;font-weight:400;color:var(--muted)}.faq-list details[open] summary:after{content:"−"}.faq-list p{margin:0 0 18px;color:var(--muted)}.cta-box{border-radius:24px;background:#101828;color:#fff;padding:42px;display:flex;align-items:center;justify-content:space-between;gap:30px;overflow:hidden;position:relative}.cta-box:after{content:"";position:absolute;width:280px;height:280px;border-radius:50%;right:-120px;top:-160px;background:conic-gradient(from 90deg,rgba(239,68,68,.38),rgba(34,197,94,.32),rgba(59,130,246,.35),rgba(239,68,68,.38));filter:blur(10px)}.cta-box>div{position:relative;z-index:2}.cta-box h2{font-size:32px;margin:0 0 8px}.cta-box p{color:#d0d5dd;margin:0}.cta-box .btn{background:#fff;color:#101828;position:relative;z-index:2;flex:0 0 auto}
.site-footer{background:#0c111d;color:#d0d5dd;padding:60px 0 24px}.footer-grid{display:grid;grid-template-columns:1.3fr .7fr .7fr;gap:44px}.footer-brand .brand{color:#fff}.footer-brand p{max-width:390px;color:#98a2b3;font-size:14px;margin:16px 0 0}.footer-col h2{color:#fff;font-size:13px;text-transform:uppercase;letter-spacing:.08em;margin:0 0 14px}.footer-links{display:grid;gap:9px}.footer-links a{font-size:14px;color:#98a2b3}.footer-links a:hover{color:#fff}.copyright{border-top:1px solid #1d2939;margin-top:42px;padding-top:22px;text-align:center;color:#667085;font-size:13px}.copyright a{color:#98a2b3}.copyright a:hover{color:#fff}
.page-hero{padding:70px 0 44px;background:#f8fafc;border-bottom:1px solid var(--line)}.breadcrumbs{font-size:13px;color:var(--muted);margin-bottom:12px}.breadcrumbs a{color:#175cd3}.page-hero h1{font-size:clamp(36px,5vw,52px);margin:0 0 12px}.page-hero p{max-width:760px;color:var(--muted);font-size:17px;margin:0}.content-layout{display:grid;grid-template-columns:minmax(0,1fr) 250px;gap:50px;align-items:start}.article{max-width:800px}.article h2{font-size:28px;margin:32px 0 10px}.article h3{font-size:20px;margin:24px 0 8px}.article p,.article li{color:#475467}.article ul{padding-left:20px}.article a{color:#175cd3;text-decoration:underline}.side-card{position:sticky;top:96px;border:1px solid var(--line);border-radius:16px;padding:18px;background:#fff}.side-card b{display:block;margin-bottom:10px}.side-card a{display:block;padding:7px 0;color:#475467;font-size:14px}.contact-options{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:28px}.contact-card{border:1px solid var(--line);border-radius:16px;padding:20px}.contact-card h2{font-size:20px;margin:0 0 8px}.contact-card p{margin:0 0 12px;color:var(--muted)}.contact-card a{color:#175cd3;font-weight:750}.note{border-left:3px solid #84adff;background:#eff8ff;padding:14px 16px;border-radius:0 10px 10px 0;color:#344054;font-size:14px}.not-found{min-height:68vh;display:grid;place-items:center;text-align:center;padding:80px 20px}.not-found-code{font-size:13px;font-weight:900;color:#175cd3;letter-spacing:.16em}.not-found h1{font-size:clamp(42px,7vw,72px);margin:8px 0 10px}.not-found p{color:var(--muted);max-width:520px;margin:0 auto 24px}.sr-only{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}
@media (max-width:980px){.nav{display:none}.menu-toggle{display:flex}.mobile-nav{position:fixed;left:0;right:0;top:74px;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow-md);padding:12px 20px 20px;display:none;z-index:999}.mobile-nav.open{display:grid}.mobile-nav a{padding:12px 10px;border-radius:9px;font-weight:700;color:#344054}.mobile-nav a:hover{background:#f2f4f7}.hero-grid{grid-template-columns:1fr}.hero-visual{min-height:370px;max-width:700px;width:100%}.tool-shell{grid-template-columns:1fr}.feature-grid{grid-template-columns:repeat(2,1fr)}.use-grid{grid-template-columns:repeat(2,1fr)}.content-layout{grid-template-columns:1fr}.side-card{position:static}.footer-grid{grid-template-columns:1.2fr .8fr .8fr}}
@media (max-width:680px){.container{width:min(calc(100% - 28px),var(--container))}.header-inner{height:68px}.mobile-nav{top:68px}.brand span{font-size:16px}.brand img{width:32px;height:32px}.hero{padding-top:58px}.hero-grid{gap:28px}.hero p{font-size:17px}.hero-visual{min-height:320px}.visual-card{inset:0}.visual-preview{height:145px}.visual-row{grid-template-columns:1fr 1fr}.visual-chip:last-child{display:none}.section{padding:64px 0}.section h2{font-size:32px}.tool-shell{padding:8px;border-radius:20px}.panel{padding:16px;border-radius:16px}.picker-stage{height:210px}.output-grid{grid-template-columns:1fr}.code-meta code{max-width:220px}.feature-grid,.steps,.tips-grid,.contact-options{grid-template-columns:1fr}.use-grid{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr;gap:28px}.cta-box{padding:30px 24px;display:block}.cta-box .btn{margin-top:20px}.page-hero{padding:52px 0 34px}.rgb-grid{gap:7px}.range-row{grid-template-columns:18px 1fr 34px}.tool-actions .btn{flex:1}.contrast-details{grid-template-columns:1fr}.footer-col h2{margin-top:4px}}
@media (max-width:420px){.hero-actions .btn{width:100%}.hero-trust{display:grid;gap:9px}.use-grid{grid-template-columns:1fr}.output-preview{grid-template-columns:1fr;height:150px}.copyright{font-size:12px}.rgb-grid{grid-template-columns:1fr 1fr 1fr}.number-field input{padding-inline:8px}.alpha-row{grid-template-columns:1fr 68px}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}

.guide-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.guide-card{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:18px;padding:24px;background:#fff;box-shadow:var(--shadow-sm)}.guide-card h2{font-size:23px;line-height:1.22;margin:9px 0 10px;letter-spacing:-.025em}.guide-card h2 a:hover{color:#175cd3}.guide-card p{color:var(--muted);margin:0 0 18px}.guide-label{font-size:11px;font-weight:850;letter-spacing:.08em;text-transform:uppercase;color:#175cd3}.guide-card-meta{margin-top:auto;padding-top:16px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:12px;font-size:13px;color:var(--muted)}.guide-card-meta a{color:#175cd3;font-weight:750}.guide-promo{display:flex;align-items:center;justify-content:space-between;gap:24px;border:1px solid var(--line);border-radius:20px;padding:26px;background:#fff}.guide-promo h3{font-size:24px;margin:0 0 6px}.guide-promo p{margin:0;color:var(--muted)}.article-hero .container{max-width:980px}.article-meta{display:flex;gap:18px;flex-wrap:wrap;margin-top:18px;font-size:13px;color:var(--muted);font-weight:650}.longform{max-width:820px}.longform>p:first-of-type{font-size:18px}.article-section{scroll-margin-top:96px}.article-section h2{font-size:30px;line-height:1.2;margin-top:42px}.article-section p{font-size:16px;line-height:1.8;margin:0 0 18px}.toc{border:1px solid var(--line);border-radius:16px;background:#f8fafc;padding:20px 22px;margin-bottom:34px}.toc b{display:block;margin-bottom:8px}.toc ol{margin:0;padding-left:22px;columns:2;column-gap:36px}.toc li{break-inside:avoid;margin:7px 0;color:#475467}.toc a{color:#175cd3;text-decoration:none}.toc a:hover{text-decoration:underline}.article-callout{margin-top:46px;border:1px solid #b2ddff;background:#eff8ff;border-radius:18px;padding:24px}.article-callout h2{margin:0 0 8px;font-size:25px}.article-callout p{margin:0 0 18px}.article-callout .btn{color:#fff;text-decoration:none}@media (max-width:760px){.guide-grid{grid-template-columns:1fr}.guide-promo{display:block}.guide-promo .btn{margin-top:18px}.toc ol{columns:1}.article-section h2{font-size:27px}}