/* summitbridgeworld.com — notched-tab index */
:root{
  --paper:#F7F3EA;
  --desk:#E9E1D0;
  --edge:#D8CDB6;
  --tan:#E2762E;
  --lag:#1F7A80;
  --ber:#8E2F5A;
  --gra:#2B2D31;
  --ink:#201E1C;
  --soft:#5A544B;
  --rule:#CFC4AE;
  --pad:clamp(22px,5.4vw,76px);
  --head:"Bricolage Grotesque","Arial Narrow",sans-serif;
  --text:"Newsreader",Georgia,serif;
  --rail:156px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:24px}
body{margin:0;background:var(--desk);color:var(--ink);font:400 1.13rem/1.64 var(--text);font-optical-sizing:auto}
img,svg{display:block}
a{color:inherit}
h1,h2,h3,h4{font-family:var(--head);font-weight:800;line-height:1.02;margin:0;letter-spacing:-.022em}
p{margin:0 0 1em}
.tb-skip{position:absolute;left:-999px;top:8px;background:var(--gra);color:var(--paper);padding:10px 16px;z-index:30;font-family:var(--head)}
.tb-skip:focus{left:12px}
:focus-visible{outline:3px solid var(--lag);outline-offset:3px}

/* colour keys */
.k-tan{--c:var(--tan);--on:var(--ink)}
.k-lag{--c:var(--lag);--on:var(--paper)}
.k-ber{--c:var(--ber);--on:var(--paper)}
.k-gra{--c:var(--gra);--on:var(--paper)}

/* ---------- header ---------- */
.tb-top{background:var(--paper);border-bottom:3px solid var(--gra);position:relative;z-index:10}
.tb-top__in{max-width:1400px;margin:0 auto;padding:0 var(--pad);display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:78px}
.tb-brand{display:flex;align-items:center;gap:12px;text-decoration:none}
.tb-brand svg{width:34px;height:34px;flex:none}
.tb-brand b{font:800 1.18rem/1 var(--head);letter-spacing:-.02em}
.tb-brand small{display:block;font:500 .7rem/1.2 var(--head);letter-spacing:.14em;text-transform:uppercase;color:var(--soft);margin-top:4px}
.tb-nav ul{list-style:none;margin:0;padding:0;display:flex;gap:6px}
.tb-nav a{position:relative;display:block;padding:10px 14px;font:600 .98rem/1 var(--head);text-decoration:none;color:var(--ink)}
.tb-nav a::after{content:"";position:absolute;left:14px;bottom:-24px;width:30px;height:11px;border-radius:0 0 6px 6px;background:var(--c);transform:scaleY(0);transform-origin:top;transition:transform .18s ease}
.tb-nav a:hover::after,.tb-nav a[aria-current="page"]::after{transform:scaleY(1)}
.tb-nav a[aria-current="page"]{color:var(--c)}
.tb-nav a.k-tan[aria-current="page"]{color:#A94F14}
.tb-burger{display:none;background:none;border:2px solid var(--gra);border-radius:10px 0 0 10px;padding:9px 12px;font:700 .9rem/1 var(--head);color:var(--ink);cursor:pointer;align-items:center;gap:10px}
.tb-burger i{display:block;width:18px;height:2px;background:currentColor;position:relative}
.tb-burger i::before,.tb-burger i::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor}
.tb-burger i::before{top:-6px}.tb-burger i::after{top:6px}

/* ---------- binder: sheet + right-edge tabs ---------- */
.tb-binder{position:relative;padding:44px var(--rail) 64px clamp(28px,4vw,60px)}
.tb-binder--plain{padding-right:clamp(28px,4vw,60px)}
.tb-sheet{position:relative;max-width:1180px;margin:0 auto;background:var(--paper);border:2px solid var(--gra);border-radius:4px;
  box-shadow:7px 7px 0 -2px var(--paper),7px 7px 0 0 var(--gra),14px 14px 0 -2px var(--paper),14px 14px 0 0 var(--gra)}
.tb-binder--plain .tb-sheet{max-width:1240px;margin:0 auto}
.tb-rail{position:absolute;top:0;right:0;bottom:0;width:var(--rail);padding-top:118px}
.tb-tab{position:sticky;display:flex;flex-direction:column;justify-content:center;margin-left:auto;margin-bottom:14px;width:128px;height:66px;padding:0 0 0 20px;
  background:var(--c);color:var(--on);text-decoration:none;border-radius:14px 0 0 14px;transform:translateX(16px);transition:transform .22s ease,width .22s ease}
.tb-tab:nth-child(1){top:96px}
.tb-tab:nth-child(2){top:176px}
.tb-tab:nth-child(3){top:256px}
.tb-tab:nth-child(4){top:336px}
.tb-tab:nth-child(2){margin-top:14px}
.tb-tab:nth-child(3){margin-top:14px}
.tb-tab:nth-child(4){margin-top:14px}
.tb-tab span{font:600 .72rem/1 var(--head);letter-spacing:.16em;opacity:.85}
.tb-tab b{font:800 1.2rem/1.1 var(--head);letter-spacing:-.01em}
.tb-tab::before{content:"";position:absolute;left:-7px;top:50%;width:7px;height:22px;margin-top:-11px;border-radius:7px 0 0 7px;background:var(--c);opacity:0;transition:opacity .2s}
.tb-tab:hover,.tb-tab.is-on{transform:translateX(0);width:146px}
.tb-tab.is-on::before{opacity:1}

/* ---------- notches ---------- */
.tb-notch{position:absolute;left:-20px;width:58px;background:var(--c);color:var(--on);border-radius:12px 0 0 12px;display:flex;align-items:center;justify-content:center;font:800 .95rem/1 var(--head);letter-spacing:.06em}
.tb-notch--v{writing-mode:vertical-rl;transform:rotate(180deg);border-radius:0 12px 12px 0}

/* ---------- home hero ---------- */
.tb-hero{position:relative;padding:clamp(40px,6vw,84px) var(--pad) clamp(40px,5vw,70px);display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,1fr);gap:clamp(28px,4.5vw,64px);align-items:center}
.tb-kicker{font:700 .78rem/1 var(--head);letter-spacing:.18em;text-transform:uppercase;color:var(--soft);margin:0 0 20px;display:flex;align-items:center;gap:10px}
.tb-kicker::before{content:"";width:18px;height:10px;border-radius:5px 0 0 5px;background:var(--tan)}
.tb-hero h1{font-size:clamp(2.6rem,6.4vw,5.4rem);margin-bottom:22px}
.tb-hero h1 em{font-style:normal;color:var(--lag)}
.tb-stand{font-size:clamp(1.15rem,1.8vw,1.38rem);color:var(--soft);max-width:34ch;margin:0 0 30px}
.tb-chips{display:flex;flex-wrap:wrap;gap:10px;list-style:none;margin:0;padding:0}
.tb-chips a{display:flex;align-items:center;gap:10px;padding:8px 14px 8px 8px;border:2px solid var(--gra);border-radius:10px 4px 4px 10px;text-decoration:none;font:700 .95rem/1 var(--head);background:var(--paper);transition:background .18s}
.tb-chips a i{font-style:normal;display:grid;place-items:center;min-width:28px;height:28px;border-radius:7px 0 0 7px;background:var(--c);color:var(--on);font-size:.85rem}
.tb-chips a:hover{background:#fff}

/* framed images */
.tb-frame{position:relative;border:2px solid var(--gra);background:var(--paper);padding:12px;border-radius:3px;max-width:min(100%,360px);justify-self:end}
.tb-frame__notch{position:absolute;left:-22px;top:26px;width:22px;height:54px;border-radius:10px 0 0 10px;background:var(--c,var(--tan))}
.tb-frame img{width:100%;aspect-ratio:1;object-fit:cover}

/* ---------- home category sections ---------- */
.tb-sec{position:relative;border-top:2px solid var(--gra);padding:clamp(44px,5.5vw,76px) var(--pad);display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:clamp(28px,4vw,60px)}
.tb-sec .tb-notch{height:118px}
.tb-sec:nth-of-type(1) .tb-notch{top:38px}
.tb-sec:nth-of-type(2) .tb-notch{top:64px}
.tb-sec:nth-of-type(3) .tb-notch{top:90px}
.tb-sec:nth-of-type(4) .tb-notch{top:116px}
.tb-sec::before{content:"";position:absolute;top:-2px;left:var(--pad);width:120px;height:8px;background:var(--c)}
.tb-sec__no{font:800 clamp(4rem,9vw,7.4rem)/.8 var(--head);color:var(--c);letter-spacing:-.05em;margin-bottom:18px}
.tb-sec h2{font-size:clamp(2.2rem,4.6vw,3.7rem);margin-bottom:18px}
.tb-sec h2 a{text-decoration:none}
.tb-sec h2 a:hover{text-decoration:underline;text-decoration-thickness:4px;text-underline-offset:7px;text-decoration-color:var(--c)}
.tb-sec__desc{max-width:44ch;font-size:1.16rem}
.tb-sec__foot{display:flex;flex-wrap:wrap;align-items:center;gap:14px 22px;margin-top:22px}
.tb-count{font:700 .82rem/1 var(--head);letter-spacing:.12em;text-transform:uppercase;padding:8px 12px;border:2px solid var(--c);border-radius:8px 3px 3px 8px}
.tb-go{font:700 1rem/1 var(--head);color:var(--ink);text-decoration-color:var(--c);text-decoration-thickness:3px;text-underline-offset:6px}
.tb-go:hover{color:var(--c)}
.k-tan .tb-go:hover{color:#A94F14}
.tb-filed{align-self:end;border-left:2px solid var(--rule);padding-left:clamp(18px,2.6vw,34px)}
.tb-filed h3{font:700 .78rem/1 var(--head);letter-spacing:.18em;text-transform:uppercase;color:var(--soft);margin-bottom:16px}
.tb-filed ol{list-style:none;margin:0;padding:0;counter-reset:f}
.tb-filed li{counter-increment:f;display:grid;grid-template-columns:38px 1fr;gap:4px 12px;padding:12px 0;border-bottom:1px solid var(--rule)}
.tb-filed li:last-child{border-bottom:0}
.tb-filed li::before{content:counter(f,decimal-leading-zero);grid-row:span 2;align-self:start;display:grid;place-items:center;height:26px;border-radius:6px 0 0 6px;background:var(--c);color:var(--on);font:700 .74rem/1 var(--head)}
.tb-filed b{font:700 1.04rem/1.2 var(--head)}
.tb-filed span{font-size:.95rem;color:var(--soft)}

/* how it works */
.tb-how{border-top:2px solid var(--gra);padding:clamp(44px,5vw,70px) var(--pad);background:var(--paper)}
.tb-how h2{font-size:clamp(1.7rem,3vw,2.3rem);margin-bottom:34px}
.tb-how__grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(22px,3vw,40px);list-style:none;margin:0;padding:0}
.tb-how li{position:relative;border:2px solid var(--gra);border-radius:3px;padding:30px 24px 22px;margin-top:18px}
.tb-how li::before{content:"";position:absolute;top:-16px;left:18px;width:64px;height:14px;background:var(--c);border-radius:8px 8px 0 0}
.tb-how h3{font-size:1.25rem;margin-bottom:10px}
.tb-how p{margin:0;font-size:1.04rem}

/* ---------- category pages ---------- */
.tb-head{position:relative;padding:clamp(40px,5.5vw,78px) var(--pad) clamp(34px,4vw,56px);display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.92fr);gap:clamp(26px,4vw,56px);align-items:center}
.tb-head:not(:has(figure)){grid-template-columns:minmax(0,1fr)}
.tb-head .tb-notch{top:clamp(44px,6vw,84px);height:96px}
.tb-crumb{font:600 .84rem/1 var(--head);color:var(--soft);margin:0 0 18px}
.tb-crumb a{text-decoration-color:var(--rule);text-underline-offset:4px}
.tb-head h1{font-size:clamp(2.6rem,6.2vw,5rem);margin-bottom:18px}
.tb-head h1::after{content:"";display:block;width:96px;height:8px;background:var(--c);margin-top:20px}
.tb-head__line{font-size:clamp(1.12rem,1.7vw,1.32rem);color:var(--soft);max-width:38ch;margin:0}
.tb-cards{border-top:2px solid var(--gra);list-style:none;margin:0;padding:clamp(48px,5vw,72px) var(--pad) clamp(48px,5vw,72px) calc(var(--pad) + 30px);display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(36px,4vw,52px) clamp(64px,6vw,84px)}
.tb-cards--solo{grid-template-columns:minmax(0,1fr)}
.tb-cards--odd>li:last-child{grid-column:1/-1}
.tb-cards--odd>li:last-child p,.tb-cards--solo p{max-width:72ch}
.tb-card{position:relative;border:2px solid var(--gra);border-radius:3px;background:var(--paper);padding:30px clamp(22px,2.6vw,34px) 26px;display:flex;flex-direction:column}
.tb-card::after{content:"";position:absolute;inset:auto 0 0 0;height:6px;background:var(--c)}
.tb-card .tb-notch{left:-48px;top:26px;width:46px;height:56px;font-size:1.05rem}
.tb-card__place{font:700 .78rem/1.2 var(--head);letter-spacing:.14em;text-transform:uppercase;color:var(--soft);margin:0 0 10px}
.tb-card h2{font-size:clamp(1.55rem,2.5vw,2rem);line-height:1.08;margin-bottom:18px}
.tb-card p{font-size:1.06rem}
.tb-tags{list-style:none;margin:auto 0 8px;padding:10px 0 0;display:flex;flex-wrap:wrap;gap:8px}
.tb-tags li{font:600 .8rem/1 var(--head);padding:7px 10px;border:1.5px solid var(--c);border-radius:6px 2px 2px 6px;color:var(--ink)}
.tb-others{border-top:2px solid var(--gra);padding:clamp(36px,4vw,56px) var(--pad) clamp(44px,5vw,64px)}
.tb-others h2{font-size:1.3rem;margin-bottom:28px}
.tb-others ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:12px;border-bottom:3px solid var(--gra)}
.tb-others a{display:block;padding:14px 22px 12px;background:var(--c);color:var(--on);text-decoration:none;font:800 1.08rem/1 var(--head);border-radius:12px 12px 0 0;transition:padding .18s}
.tb-others a:hover{padding-bottom:20px}
.tb-others small{display:block;font:600 .72rem/1 var(--head);letter-spacing:.14em;text-transform:uppercase;opacity:.85;margin-top:6px}

/* ---------- text pages ---------- */
.tb-doc{padding:clamp(40px,5.5vw,80px) var(--pad) clamp(48px,6vw,84px);max-width:860px}
.tb-doc h1{font-size:clamp(2.3rem,5vw,3.8rem);margin-bottom:28px}
.tb-doc h2{font-size:1.45rem;margin:38px 0 12px}
.tb-doc p,.tb-doc li{font-size:1.12rem}
.tb-doc ul{padding-left:1.2em}
.tb-doc .tb-lede{font-size:1.3rem;color:var(--soft)}
.tb-about{position:relative}
.tb-about .tb-notch{top:clamp(48px,6vw,88px);height:84px}
.tb-mail{font:700 1.2rem/1.3 var(--head);color:var(--lag);text-underline-offset:5px}

/* ---------- footer ---------- */
.tb-foot{background:var(--gra);color:var(--paper);padding:clamp(48px,6vw,80px) var(--pad) 30px}
.tb-foot__in{max-width:1400px;margin:0 auto;display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr) minmax(0,1fr);gap:clamp(28px,4vw,64px)}
.tb-foot .tb-brand b{color:var(--paper)}
.tb-foot p{color:#D9D3C6;font-size:1.02rem;max-width:40ch;margin-top:18px}
.tb-foot h2{font:700 .78rem/1 var(--head);letter-spacing:.18em;text-transform:uppercase;color:#B9B2A4;margin-bottom:18px}
.tb-foot ul{list-style:none;margin:0;padding:0}
.tb-foot li{margin:0 0 10px}
.tb-foot li a{display:inline-flex;align-items:center;gap:10px;text-decoration:none;font:600 1rem/1.3 var(--head)}
.tb-foot li a::before{content:"";width:12px;height:8px;border-radius:4px 0 0 4px;background:var(--c,#8D877C)}
.tb-foot .k-gra{--c:#D9D3C6}
.tb-foot li a:hover{text-decoration:underline;text-underline-offset:4px}
.tb-foot__end{max-width:1400px;margin:44px auto 0;padding-top:20px;border-top:1px solid #4A4C52;font-size:.92rem;color:#B9B2A4;display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px}

/* ---------- responsive ---------- */
@media (max-width:1080px){
  :root{--rail:132px}
  .tb-tab{width:116px;padding-left:16px}
  .tb-tab b{font-size:1.04rem}
  .tb-tab:hover,.tb-tab.is-on{width:126px}
}
@media (max-width:900px){
  .tb-binder{padding:24px 14px 48px 14px}
  .tb-rail{display:none}
  .tb-sheet{box-shadow:5px 5px 0 -2px var(--paper),5px 5px 0 0 var(--gra)}
  .tb-burger{display:inline-flex}
  .tb-nav{position:absolute;left:0;right:0;top:100%;background:var(--paper);border-bottom:3px solid var(--gra);display:none}
  .tb-nav.is-open{display:block}
  .tb-nav ul{flex-direction:column;gap:0;padding:8px var(--pad) 16px}
  .tb-nav a{padding:14px 0 14px 22px;border-bottom:1px solid var(--rule);font-size:1.08rem}
  .tb-nav a::after{left:0;top:50%;bottom:auto;width:10px;height:18px;margin-top:-9px;border-radius:5px 0 0 5px;transform:scaleX(1);opacity:.35}
  .tb-nav a[aria-current="page"]::after{opacity:1}
  .tb-hero,.tb-sec,.tb-head{grid-template-columns:minmax(0,1fr)}
  .tb-frame{justify-self:start;max-width:min(100%,300px)}
  .tb-notch{left:-2px;width:14px;font-size:0;border-radius:0 8px 8px 0}
  .tb-notch--v{transform:none;border-radius:0 8px 8px 0}
  .tb-card .tb-notch{left:-2px;top:-2px;width:auto;height:auto;padding:8px 12px;font-size:.9rem;writing-mode:horizontal-tb;border-radius:0 0 10px 0}
  .tb-card{padding-top:52px}
  .tb-frame__notch{left:-2px;top:-2px;width:46px;height:12px;border-radius:0 0 8px 0}
  .tb-filed{border-left:0;padding-left:0;border-top:2px solid var(--rule);padding-top:22px}
  .tb-how__grid{grid-template-columns:minmax(0,1fr)}
  .tb-cards{grid-template-columns:minmax(0,1fr);padding-left:var(--pad);gap:34px}
  .tb-foot__in{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .tb-foot__in>div:first-child{grid-column:1/-1}
}
@media (max-width:520px){
  :root{--pad:20px}
  body{font-size:1.06rem}
  .tb-brand small{display:none}
  .tb-burger span{display:none}
  .tb-foot__in{grid-template-columns:minmax(0,1fr)}
  .tb-others a{padding:12px 16px 10px}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}