/* NutriPlanner case study · brand system: forest #1F3529/#2E4A3B · gold #D4AF37 · mint #E7F5E9 · Playfair Display + Roboto */
@font-face{font-family:"Playfair Display";font-weight:500;font-display:swap;src:url("assets/fonts/PlayfairDisplay-500.woff2") format("woff2")}
@font-face{font-family:"Playfair Display";font-weight:600;font-display:swap;src:url("assets/fonts/PlayfairDisplay-600.woff2") format("woff2")}
@font-face{font-family:"Roboto";font-weight:400;font-display:swap;src:url("assets/fonts/Roboto-400.woff2") format("woff2")}
@font-face{font-family:"Roboto";font-weight:500;font-display:swap;src:url("assets/fonts/Roboto-500.woff2") format("woff2")}
@font-face{font-family:"Roboto";font-weight:700;font-display:swap;src:url("assets/fonts/Roboto-700.woff2") format("woff2")}
:root{
  --f900:#1F3529;--f700:#2E4A3B;--f500:#4A6B57;--gold:#D4AF37;--gold-d:#7A6119;--mint:#E7F5E9;--mint2:#D4EDE0;
  --bg:#F6F8F7;--surface:#FFFFFF;--ink:#1E2A23;--ink6:#56635B;--ink4:#8B958F;--line:#E3E9E5;
  --serif:"Playfair Display",Georgia,serif;--sans:"Roboto",system-ui,-apple-system,"Segoe UI",sans-serif;
  --pad:clamp(18px,5vw,72px);--ease:cubic-bezier(.16,1,.3,1);--r:18px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{background:var(--bg);color:var(--ink);font:400 17px/1.6 var(--sans);overflow-x:hidden}
a{color:inherit}
img{display:block;max-width:100%;height:auto}
.skip{position:absolute;left:-999px;top:10px;background:var(--f900);color:#fff;padding:10px 14px;border-radius:8px;z-index:99}
.skip:focus{left:10px}
:focus-visible{outline:3px solid var(--gold);outline-offset:3px;border-radius:4px}

/* top bar */
.top{position:sticky;top:0;z-index:40;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:16px var(--pad);background:rgba(246,248,247,.86);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.back{text-decoration:none;font:500 14px var(--sans);color:var(--f700);display:inline-flex;gap:8px;align-items:center}
.back span{transition:transform .3s var(--ease)}.back:hover span{transform:translateX(-4px)}
.toc{display:flex;gap:22px}
.toc a{text-decoration:none;font:500 12px var(--sans);letter-spacing:.14em;text-transform:uppercase;color:var(--ink6)}
.toc a:hover{color:var(--f900)}

/* hero */
.hero{padding:clamp(70px,11vw,150px) var(--pad) clamp(40px,6vw,70px);max-width:1400px;margin:0 auto}
.kicker,.num{font:500 13px var(--sans);letter-spacing:.2em;text-transform:uppercase;color:var(--gold-d)}
h1{font:500 clamp(4rem,13vw,11rem)/.9 var(--serif);letter-spacing:-.03em;color:var(--f900);margin:18px 0 28px}
.lede{font-size:clamp(1.15rem,2vw,1.55rem);line-height:1.45;color:var(--ink6);max-width:44ch}
.meta{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line);border-radius:14px;overflow:hidden;margin-top:clamp(40px,6vw,64px)}
.meta div{background:var(--surface);padding:18px 20px}
.meta dt{font:500 11px var(--sans);letter-spacing:.16em;text-transform:uppercase;color:var(--ink4);margin-bottom:6px}
.meta dd{font-size:15px;color:var(--ink);line-height:1.45}

/* film */
.film{padding:0 var(--pad) clamp(60px,9vw,120px);max-width:1500px;margin:0 auto}
.frame{border-radius:22px;overflow:hidden;background:var(--f900);box-shadow:0 50px 100px -40px rgba(20,40,30,.45)}
.frame video{display:block;width:100%;height:auto;aspect-ratio:16/9;background:var(--f900)}
.cap{margin-top:14px;font-size:14px;color:var(--ink4);text-align:center}

/* sections */
.sec{padding:clamp(70px,10vw,140px) var(--pad);border-top:1px solid var(--line)}
.sec>*{max-width:1400px;margin-left:auto;margin-right:auto}
.tint{background:var(--mint)}
.split{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:clamp(28px,5vw,80px);align-items:start;margin-top:22px;margin-bottom:clamp(40px,6vw,70px)}
h2{font:500 clamp(2.3rem,5.2vw,4.4rem)/1.02 var(--serif);letter-spacing:-.02em;color:var(--f900)}
.prose{color:var(--ink6);font-size:clamp(1rem,1.3vw,1.12rem)}
.prose p+p,.prose p+ul{margin-top:16px}
.ticks{list-style:none;display:grid;gap:12px;margin-top:20px}
.ticks li{padding-left:30px;position:relative}
.ticks li::before{content:"";position:absolute;left:0;top:5px;width:18px;height:18px;border-radius:5px;background:var(--f700) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m5 12 5 5 9-10'/%3E%3C/svg%3E") center/12px no-repeat}
.ticks b{color:var(--ink)}

/* before */
.issues{list-style:none;display:grid;gap:12px}
.issues li{display:grid;grid-template-columns:150px 1fr;gap:16px;align-items:baseline;background:var(--surface);border-radius:14px;padding:16px 18px;border:1px solid var(--line)}
.issues b{font:600 1.15rem var(--serif);color:var(--f900)}
.issues span{color:var(--ink6);font-size:15px}
.phones{display:grid;gap:clamp(14px,3vw,40px);justify-content:center}
.phones.three{grid-template-columns:repeat(3,minmax(0,280px))}
.phones figure{text-align:center}
.phones img{border-radius:30px;border:7px solid #1A241E;box-shadow:0 30px 60px -30px rgba(20,40,30,.5);filter:saturate(.75)}
figcaption{margin-top:12px;font:500 12px var(--sans);letter-spacing:.14em;text-transform:uppercase;color:var(--ink4)}

/* rebuild: compare */
.compare-wrap{display:grid;grid-template-columns:minmax(0,360px) minmax(0,1fr);gap:clamp(30px,6vw,90px);align-items:center;justify-content:center}
.compare{position:relative;width:100%;aspect-ratio:560/1212;border-radius:34px;border:8px solid #1A241E;overflow:hidden;box-shadow:0 40px 80px -36px rgba(20,40,30,.55);--pos:50%;user-select:none;touch-action:pan-y}
.compare img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.compare .before{clip-path:inset(0 calc(100% - var(--pos)) 0 0)}
.compare input{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:ew-resize;margin:0;z-index:3}
.compare .handle{position:absolute;top:0;bottom:0;left:var(--pos);width:3px;margin-left:-1.5px;background:var(--gold);box-shadow:0 0 14px rgba(212,175,55,.8);z-index:2;pointer-events:none}
.compare .handle i{position:absolute;top:50%;left:50%;width:44px;height:44px;margin:-22px 0 0 -22px;border-radius:50%;background:var(--gold);box-shadow:0 8px 20px rgba(0,0,0,.25)}
.compare .handle i::before{content:"‹ ›";position:absolute;inset:0;display:grid;place-items:center;font:700 18px var(--sans);color:var(--f900);letter-spacing:2px}
.compare input:focus-visible~.handle i{outline:3px solid var(--f900);outline-offset:3px}
.compare .tag{position:absolute;top:14px;z-index:2;font:500 11px var(--sans);letter-spacing:.14em;text-transform:uppercase;padding:6px 10px;border-radius:99px;pointer-events:none}
.compare .tb{left:12px;background:rgba(26,36,30,.75);color:#fff}
.compare .ta{right:12px;background:var(--gold);color:var(--f900)}
.contrast{display:grid;gap:18px;max-width:440px}
.cl{font:500 13px var(--sans);letter-spacing:.2em;text-transform:uppercase;color:var(--gold-d)}
.pair{display:grid;grid-template-columns:200px 1fr;gap:20px;align-items:center}
.sw{height:56px;border-radius:999px;display:grid;place-items:center;font:700 17px "Montserrat",var(--sans);background:var(--gold)}
.sw.bad span{color:#fff}.sw.good span{color:var(--f900)}
.v{font:600 2.2rem/1 var(--serif);color:var(--f900)}
.v.bad{color:#B4322B;text-decoration:line-through;text-decoration-thickness:2px}
.v small{display:block;font:500 12px var(--sans);letter-spacing:.14em;color:var(--f500);margin-top:6px}

/* system */
.kpis{list-style:none;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-bottom:clamp(30px,5vw,56px)}
.kpis li{background:var(--surface);border-radius:var(--r);padding:22px 22px 20px;border:1px solid var(--line)}
.kpis b{display:block;font:500 clamp(2.6rem,5vw,3.8rem)/1 var(--serif);color:var(--f900)}
.kpis span{color:var(--ink6);font-size:15px}
.found{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:14px;margin-bottom:14px}
.palette{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px;background:var(--surface);border-radius:var(--r);padding:20px;border:1px solid var(--line)}
.palette i{display:block;aspect-ratio:1;border-radius:14px;margin-bottom:10px}
.palette b{display:block;font:500 13px var(--sans)}
.palette span{font-size:12px;color:var(--ink4)}
.type{display:grid;grid-template-columns:auto 1fr;gap:10px 18px;align-items:center;background:var(--surface);border-radius:var(--r);padding:20px 24px;border:1px solid var(--line)}
.t1{font:500 3.6rem/1 var(--serif);color:var(--f900)}.t2{font:500 3.4rem/1 var(--sans);color:var(--f900)}
.type b{display:block;font-weight:500}.type span{font-size:14px;color:var(--ink6)}
.rows{display:grid;gap:22px;background:var(--bg);border-radius:var(--r);padding:clamp(18px,3vw,36px);border:1px solid var(--line)}

/* screens gallery */
.gallery{display:grid;grid-auto-flow:column;grid-auto-columns:clamp(180px,20vw,250px);gap:clamp(14px,2vw,26px);overflow-x:auto;scroll-snap-type:x mandatory;scroll-padding-inline:var(--pad);padding:6px 4px 26px;max-width:none!important;margin-left:calc(-1 * var(--pad))!important;margin-right:calc(-1 * var(--pad))!important;padding-left:var(--pad);padding-right:var(--pad);scrollbar-width:thin;scrollbar-color:var(--f500) transparent}
.gallery figure{scroll-snap-align:start}
.gallery img{border-radius:24px;border:6px solid #1A241E;box-shadow:0 24px 44px -26px rgba(20,40,30,.5)}
.gal-nav{display:flex;gap:10px;justify-content:flex-end}
.gal-nav button{width:48px;height:48px;border-radius:50%;border:1px solid var(--line);background:var(--surface);font:500 18px var(--sans);color:var(--f900);cursor:pointer;transition:background-color .2s,border-color .2s}
.gal-nav button:hover{background:var(--mint);border-color:var(--f500)}

/* prototype */
.dark{background:var(--f900);color:#fff;border-top:0}
.dark h2{color:#fff}.dark .prose{color:var(--mint2)}.dark .num{color:var(--gold)}
.btn{display:inline-flex;align-items:center;gap:10px;text-decoration:none;font:700 15px "Montserrat",var(--sans);border-radius:999px;padding:16px 24px;background:var(--gold);color:var(--f900);border:0;cursor:pointer;transition:transform .3s var(--ease),box-shadow .3s}
.btn:hover{transform:translateY(-2px);box-shadow:0 14px 30px -14px rgba(212,175,55,.8)}
.btn.ghost{background:transparent;color:#fff;box-shadow:inset 0 0 0 1.5px rgba(255,255,255,.4);margin-top:22px}
.btn.ghost:hover{box-shadow:inset 0 0 0 1.5px #fff}
.proto{position:relative;border-radius:22px;overflow:hidden;aspect-ratio:16/9;background:#14231B;box-shadow:0 40px 90px -40px rgba(0,0,0,.6)}
.proto-poster{width:100%;height:100%;object-fit:cover;object-position:right center;opacity:.32;filter:blur(6px) saturate(.9);transform:scale(1.06)}
.proto-cta{position:absolute;inset:0;display:grid;place-content:center;justify-items:center;gap:12px;text-align:center}
.proto-cta p{font-size:13px;color:var(--mint2)}
.proto.live{aspect-ratio:auto;height:min(86vh,900px);background:#0F1A14}
.proto iframe{width:100%;height:100%;border:0;display:block}

/* learned + next + footer */
.learn{list-style:none;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:22px;counter-reset:l}
.learn li{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:26px 24px;counter-increment:l}
.learn li::before{content:"0" counter(l);display:block;font:500 13px var(--sans);letter-spacing:.2em;color:var(--gold-d);margin-bottom:14px}
.learn b{display:block;font:500 1.45rem/1.15 var(--serif);color:var(--f900);margin-bottom:10px}
.learn span{color:var(--ink6);font-size:15px}
.next{padding:clamp(60px,8vw,110px) var(--pad);text-align:center;border-top:1px solid var(--line)}
.next p{font:500 clamp(2rem,4vw,3rem)/1.1 var(--serif);color:var(--f900);margin-bottom:26px}
.foot{padding:28px var(--pad) 40px;border-top:1px solid var(--line);color:var(--ink4);font-size:14px;text-align:center}
.foot b{color:var(--ink)}

/* reveal */
.js .rv{opacity:0;transform:translateY(26px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.js .rv.in{opacity:1;transform:none}

/* responsive */
@media (max-width:980px){
  .toc{display:none}
  .meta{grid-template-columns:repeat(2,minmax(0,1fr))}
  .split,.found,.compare-wrap{grid-template-columns:minmax(0,1fr)}
  .compare-wrap{justify-items:center}
  .compare{max-width:340px}
  .kpis{grid-template-columns:repeat(2,minmax(0,1fr))}
  .learn{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:600px){
  .meta{grid-template-columns:minmax(0,1fr)}
  .phones.three{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
  .phones img{border-width:4px;border-radius:18px}
  .issues li{grid-template-columns:minmax(0,1fr);gap:4px}
  .palette{grid-template-columns:repeat(3,minmax(0,1fr))}
  .pair{grid-template-columns:150px 1fr}
  .proto.live{height:78vh}
}