/* ─── Kallisto React — Marketing Stylesheet ─── */
/* Tokens, reset, glass, and backdrop loaded from design-system CSS chain */
#root{min-height:100vh}
.skip-link{position:absolute;top:-40px;left:0;background:var(--violet);color:var(--white);padding:var(--space-4);z-index:100;transition:top var(--motion-fast)}
.skip-link:focus{top:0}
/* Page */
.page{position:relative;z-index:2;isolation:isolate;min-height:100vh;display:flex;flex-direction:column}

/* ── Navbar ── */
nav.universal-nav{display:flex;align-items:center;justify-content:space-between;padding:16px 120px;position:relative;z-index:100;background:transparent;box-sizing:border-box;transition:background var(--motion-base) var(--ease-standard),box-shadow var(--motion-base) var(--ease-standard)}
nav.universal-nav:has(.nav-links:hover){background:var(--bg-1);box-shadow:0 4px 20px oklch(from var(--ink) l c h / 0.05)}
nav.universal-nav .nav-logo{display:flex;align-items:center;gap:8px;text-decoration:none}
nav.universal-nav .nav-links{display:flex;align-items:center;gap:4px;list-style:none;margin:0;padding:0;position:relative}
nav.universal-nav .nav-item{position:static;padding-bottom:24px;margin-bottom:-24px}
nav.universal-nav a.nav-link{font-weight:var(--fw-semi);font-size:var(--fs-nav);color:var(--ink-2);text-decoration:none;padding:8px 16px;border-radius:var(--r-xl);display:inline-flex;align-items:center;gap:6px;transition:color var(--motion-fast) var(--ease-standard);position:relative;z-index:2}
nav.universal-nav a.nav-link:hover{color:var(--ink)}
.nav-highlight{position:absolute;background:var(--bg-2);border-radius:var(--r-xl);transition:all var(--motion-slow) cubic-bezier(.4,0,.2,1);pointer-events:none;z-index:1;opacity:0}
nav.universal-nav .nav-links:hover .nav-highlight{opacity:1}
nav.universal-nav .nav-link .chevron{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:2;transition:transform var(--motion-fast)}
nav.universal-nav .nav-item:hover .chevron{transform:rotate(180deg)}
/* Mega Menu */
nav.universal-nav .mega-menu-wrapper{position:absolute;top:calc(100% + 16px);left:50%;width:100vw;margin-left:-50vw;background:var(--bg-1);border-top:1px solid var(--line);border-radius:0 0 var(--r-xl) var(--r-xl);opacity:0;visibility:hidden;transform:translateY(-12px);transition:transform var(--motion-base) cubic-bezier(.16,1,.3,1),opacity var(--motion-fast) var(--ease-standard),visibility var(--motion-fast);pointer-events:none;padding:32px 0 36px;z-index:-1;box-sizing:border-box;overflow:hidden}
nav.universal-nav .mega-menu-wrapper .mega-menu-inner{opacity:0;transform:translateY(-6px);transition:opacity var(--d-drop) var(--ease-out) .05s,transform var(--d-drop) var(--ease-out) .05s}
nav.universal-nav .nav-item:hover .mega-menu-wrapper,nav.universal-nav .nav-item:focus-within .mega-menu-wrapper{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(0);transition-delay:.04s}
nav.universal-nav .nav-item:hover .mega-menu-wrapper .mega-menu-inner,nav.universal-nav .nav-item:focus-within .mega-menu-wrapper .mega-menu-inner{opacity:1;transform:translateY(0);transition-delay:.08s}
nav.universal-nav .mega-menu-inner{max-width:1100px;margin:0 auto;display:flex;gap:120px;align-items:flex-start;padding:0 60px;box-sizing:border-box}
nav.universal-nav .mega-left{flex:0 0 auto;max-width:360px;min-width:0}
nav.universal-nav .mega-left h3{font-size:var(--fs-xl);font-weight:var(--fw-bold);color:var(--ink);line-height:1.3;letter-spacing:-.4px;margin-bottom:10px;margin-top:0}
nav.universal-nav .mega-left p{font-size:var(--fs-md);color:var(--ink-3);margin-bottom:20px;max-width:320px;line-height:1.5}
nav.universal-nav .btn-pill-light{display:inline-flex;align-items:center;padding:10px 20px;background:var(--bg-2);color:var(--ink);border-radius:var(--r-full);font-size:var(--fs-base);font-weight:var(--fw-bold);text-decoration:none;transition:background var(--d-tip) var(--ease-out),transform var(--d-press) var(--ease-out)}
nav.universal-nav .btn-pill-light:active{transform:scale(0.97);transition-duration:80ms}
nav.universal-nav .btn-pill-light:hover{background:var(--bg-2)}
nav.universal-nav .mega-right{display:flex;flex-direction:column;gap:2px;flex:0 0 360px;min-width:360px}
nav.universal-nav .mega-link{display:flex;align-items:center;gap:14px;font-size:var(--fs-nav);font-weight:var(--fw-semi);color:var(--ink);text-decoration:none;transition:color var(--d-tip) var(--ease-out),background var(--d-tip) var(--ease-out),transform var(--d-press) var(--ease-out);padding:12px 18px;border-radius:var(--r-md);margin-left:-18px;margin-right:-18px;white-space:nowrap}
nav.universal-nav .mega-link svg.icon{width:18px;height:18px;color:var(--ink-3);transition:color var(--d-tip) var(--ease-out);flex-shrink:0}
nav.universal-nav .mega-link svg.arrow{width:16px;height:16px;margin-left:auto;color:var(--ink-3);transition:color var(--d-tip) var(--ease-out),transform var(--d-tip) var(--ease-out);flex-shrink:0}
nav.universal-nav .mega-link:hover{color:var(--ink);background:var(--bg-2)}
nav.universal-nav .mega-link:hover svg.icon{color:var(--ink)}
nav.universal-nav .mega-link:hover svg.arrow{color:var(--ink);transform:translateX(2px)}
nav.universal-nav .nav-actions{display:flex;align-items:center}
nav.universal-nav .btn-download{font-weight:var(--fw-semi);font-size:var(--fs-nav);color:var(--bg-1);background:var(--ink);border:none;cursor:pointer;padding:10px 24px;border-radius:var(--r-xl);display:flex;align-items:center;gap:8px;transition:background var(--motion-fast),box-shadow var(--motion-fast);text-decoration:none}
nav.universal-nav .btn-download:hover{background:var(--ink);box-shadow:0 4px 12px oklch(from var(--ink) l c h / 0.15)}
nav.universal-nav .btn-download svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2}
nav.universal-nav .nav-right-group{display:flex;align-items:center;gap:8px}
.nav-hamburger{display:none;background:none;border:none;cursor:pointer;padding:6px;border-radius:var(--r-sm);color:var(--ink-2);transition:background var(--motion-fast)}
.nav-hamburger:hover{background:oklch(from var(--ink) l c h / 0.06)}
.nav-mobile-backdrop{display:none}
.nav-mobile-menu{display:none}
@media(max-width:768px){
  .nav-hamburger{display:flex;align-items:center;justify-content:center}
  .nav-mobile-backdrop{display:block;position:fixed;inset:0;background:oklch(from var(--ink) l c h / 0.3);z-index:98;animation:fadeIn .2s ease}
  .nav-mobile-menu{display:flex;flex-direction:column;position:fixed;top:56px;left:0;right:0;background:var(--bg-1);backdrop-filter:blur(20px);z-index:99;padding:12px 20px 20px;box-shadow:0 8px 32px oklch(from var(--ink) l c h / 0.1);animation:slideDown .25s cubic-bezier(.2,0,0,1)}
  .nav-mobile-link{display:block;padding:12px 8px;font-size:var(--fs-nav);font-weight:var(--fw-semi);color:var(--ink);text-decoration:none;border-bottom:1px solid var(--line);transition:background var(--motion-fast)}
  .nav-mobile-link:last-child{border-bottom:none}
  .nav-mobile-link:hover{background:var(--bg-2)}
}
@keyframes slideDown{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}

/* ── Hero ── */
.hero{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:0 120px;margin-top:10px;padding-bottom:80px;gap:0}
.hero-inner{display:flex;flex-direction:column;align-items:center;gap:0;position:relative;z-index:10}
.hero-headline{font-weight:var(--fw-black);font-size:80px;letter-spacing:-4.8px;line-height:1;color:var(--ink);text-align:center;margin-bottom:34px}
.hero-headline .letter{display:inline-block;line-height:1em;opacity:0;transform-origin:50% 100%}
.hero-subtitle{font-weight:var(--fw-semi);font-size:20px;letter-spacing:-.4px;color:var(--ink-2);text-align:center;max-width:736px;width:542px;line-height:1.5;margin-bottom:44px}
/* Badges */
.badge-row{display:flex;align-items:center;gap:6px;margin-bottom:34px;flex-wrap:wrap;justify-content:center}
.badge-dark{display:flex;align-items:center;gap:6px;background:var(--ink);border-radius:var(--r-full);padding:5px 10px 5px 8px}
.badge-dark-text{font-weight:var(--fw-regular);font-size:var(--fs-md);color:var(--bg-1)}
.badge-light{display:flex;align-items:center;background:var(--bg-1);border-radius:var(--r-full);padding:5px 12px;box-shadow:0 1px 4px oklch(from var(--ink) l c h / 0.10)}
.badge-light-text{font-weight:var(--fw-regular);font-size:var(--fs-md);color:var(--ink)}
/* CTAs */
.hero-cta-wrapper{display:flex;align-items:center;gap:12px;position:relative;z-index:10;flex-wrap:wrap;justify-content:center}
.hero-cta-wrapper a{display:flex;align-items:center;justify-content:center;height:48px;padding:0 32px;border-radius:var(--r-sm);font-weight:var(--fw-semi);font-size:var(--fs-nav);text-decoration:none;gap:8px;transition:background var(--d-tip) var(--ease-out),color var(--d-tip),border-color var(--d-tip),transform var(--d-press) var(--ease-out),box-shadow var(--d-tip) var(--ease-out)}
.cta-primary{background:var(--ink);color:var(--bg-1);border:none}
.cta-primary:hover{background:var(--ink)!important;transform:translateY(-1px);box-shadow:0 4px 12px oklch(from var(--ink) l c h / 0.18)}
.cta-secondary{background:transparent;color:var(--ink-2);border:1.5px solid transparent}
.cta-secondary:hover{background:var(--bg-1)!important;color:var(--ink)!important;border-color:var(--line)!important;transform:translateY(-1px)}

/* ── Glass shorthand (app alias for DS .kal-glass-strong) ── */
.glass-strong{
  background:var(--glass-bg-strong);
  backdrop-filter:blur(28px) saturate(1.8);
  -webkit-backdrop-filter:blur(28px) saturate(1.8);
  border:1px solid var(--glass-stroke-2);
  box-shadow:inset 0 1px 0 var(--glass-stroke), var(--shadow-lg);
}

/* ── Composer (Home) ── */
.composer{
  position:relative;
  width:100%;
  border-radius:var(--r-xl);
  padding:var(--card-pad-y) var(--card-pad-x) var(--row-gap-loose);
  display:flex;
  flex-direction:column;
  gap:var(--card-gap);
  /* Alignment: center on page, constrain max-width from parent */
  margin-left:auto;
  margin-right:auto;
  box-sizing:border-box;
}
.composer-glow{
  position:absolute;
  inset:-1px;
  border-radius:calc(var(--r-xl) + 1px);
  padding:1px;
  background:linear-gradient(135deg,oklch(.85 .10 295/.6),oklch(.90 .06 235/.4) 50%,oklch(.92 .05 175/.4));
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;
  mask-composite:exclude;
  pointer-events:none;
  opacity:.7;
}
.composer-ta{
  width:100%;
  border:0;
  background:transparent;
  resize:none;
  outline:none;
  color:var(--ink);
  font-size:var(--fs-nav);
  line-height:1.5;
  min-height:28px;
  max-height:180px;
  font-family:inherit;
}
.composer-ta::placeholder{color:var(--ink-3)}

/* Composer bottom row — tools left, actions right */
.composer-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:var(--row-gap-loose);
  min-height:var(--control-h-lg);
}
.composer-tools{
  display:flex;
  align-items:center;
  gap:var(--row-gap-tight);
  flex-shrink:0;
}
.ctool{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:var(--icon-text-gap);
  padding:7px 11px;
  border-radius:var(--r-sm);
  border:1px solid oklch(from var(--ink) l c h / 0.10);
  background:var(--glass-bg);
  color:var(--ink-2);
  font-size:var(--fs-sub);
  font-weight:var(--fw-medium);
  white-space:nowrap;
  transition:background var(--d-tip) var(--ease-out),
             color var(--d-tip),
             border-color var(--d-tip),
             transform var(--d-press) var(--ease-out);
  cursor:pointer;
}
.ctool:active{transform:scale(0.97);transition-duration:80ms}
.ctool.icon-only{padding:7px;width:32px;height:32px}
.ctool:hover{background:var(--bg-1);color:var(--ink);border-color:oklch(from var(--ink) l c h / 0.18)}
.ctool svg{flex-shrink:0}

/* Composer right actions — model pill + send */
.composer-actions{
  display:flex;
  align-items:center;
  gap:var(--action-group-gap);
  flex-shrink:0;
}
.model-pill{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:6px 10px;
  border-radius:var(--r-sm);
  background:var(--glass-bg);
  border:1px solid oklch(from var(--ink) l c h / 0.10);
  font-size:var(--fs-sm);
  color:var(--ink-3);
  letter-spacing:.01em;
  white-space:nowrap;
}
.m-dot{
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--mint);
  box-shadow:0 0 0 2px oklch(.85 .10 175/.3);
  flex-shrink:0;
  animation:kalBreathe 3s ease-in-out infinite;
}
.send-btn{
  width:38px;
  height:38px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:var(--r-md);
  border:0;
  background:var(--ink);
  color:var(--bg-1);
  flex-shrink:0;
  transition:background var(--d-tip) var(--ease-out),
             transform var(--d-press) var(--ease-out),
             box-shadow var(--d-tip) var(--ease-out);
  box-shadow:0 2px 6px oklch(0.15 0.05 280 / 0.18);
  cursor:pointer;
}
.send-btn:active:not(:disabled){transform:scale(0.93);transition-duration:80ms}
.send-btn:hover:not(:disabled){background:oklch(.30 .04 285);transform:translateY(-1px);box-shadow:0 4px 12px oklch(0.15 0.05 280 / 0.22)}
.send-btn.active{background:linear-gradient(135deg,oklch(.62 .18 285),oklch(.55 .20 280));box-shadow:0 4px 14px oklch(.55 .18 285/.45)}
.send-btn:disabled{opacity:.7;cursor:not-allowed}

/* Composer responsive */
@media(max-width:600px){
  .composer{padding:12px 14px 10px}
  .composer-row{flex-wrap:wrap;gap:8px}
  .composer-tools{order:1;flex:1 1 auto}
  .composer-actions{order:2;margin-left:auto}
  .ctool span{display:none}
  .ctool.icon-only{padding:6px;width:30px;height:30px}
}

/* ── Animations ── */
@keyframes springScaleIn{0%{opacity:0;transform:scale(.9) translateY(20px);filter:blur(10px)}100%{opacity:1;transform:scale(1) translateY(0);filter:blur(0)}}
.hero-inner>*{opacity:0;animation:springScaleIn 1.2s cubic-bezier(.16,1,.3,1) forwards;will-change:transform,opacity,filter}
.hero-inner>*:nth-child(1){animation-delay:.1s}
.hero-inner>*:nth-child(2){animation-delay:.2s}
.hero-inner>*:nth-child(3){animation-delay:.3s}
.hero-inner>*:nth-child(4){animation-delay:.4s}
@keyframes fadeUp{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:translateY(0)}}

/* ── Footer ── */
.site-footer{display:flex;align-items:center;justify-content:space-between;padding:24px 120px;font-size:var(--fs-base);color:var(--ink-3);border-top:1px solid var(--line);position:relative;z-index:10}
.footer-links{display:flex;gap:24px}
.footer-links a{color:var(--ink-3);text-decoration:none;transition:color var(--d-tip) var(--ease-out),transform var(--d-press) var(--ease-out)}
.footer-links a:hover{color:var(--ink);transform:translateY(-1px)}

/* ── Blog ── */
.blog-section{flex:1;padding:48px 120px 80px;position:relative;z-index:10}
.blog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;max-width:1100px;margin:0 auto}
.blog-card{background:var(--bg-1);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;transition:box-shadow var(--t-card),transform var(--t-card),border-color var(--t-quick);cursor:pointer;text-decoration:none;display:block;opacity:0;animation:springScaleIn .8s var(--ease-out) forwards}
.blog-card:nth-child(1){animation-delay:.5s}.blog-card:nth-child(2){animation-delay:.6s}.blog-card:nth-child(3){animation-delay:.7s}.blog-card:nth-child(4){animation-delay:.8s}.blog-card:nth-child(5){animation-delay:.9s}.blog-card:nth-child(6){animation-delay:1s}
.blog-card:hover{box-shadow:0 8px 32px oklch(from var(--ink) l c h / 0.10);transform:translateY(-4px);border-color:oklch(from var(--violet) l c h / 0.15)}
.blog-card:active{transform:scale(0.985);transition-duration:120ms}
.blog-card-img{width:100%;height:180px;display:flex;align-items:center;justify-content:center}
.blog-card-body{padding:20px}
.blog-tag{font-size:var(--fs-sm);font-weight:var(--fw-bold);color:var(--violet);text-transform:uppercase;letter-spacing:.8px;margin-bottom:8px}
.blog-card-title{font-size:var(--fs-lg);font-weight:var(--fw-bold);color:var(--ink);line-height:1.4;margin-bottom:10px}
.blog-card-desc{font-size:var(--fs-base);color:var(--ink-3);line-height:1.5;margin-bottom:16px}
.blog-card-meta{display:flex;align-items:center;justify-content:space-between}
.blog-date{font-size:var(--fs-sm);color:var(--ink-3)}
.blog-read{font-size:var(--fs-sm);font-weight:var(--fw-bold);color:var(--ink);display:flex;align-items:center;gap:4px}

/* ── About ── */
.about-main{max-width:1200px;margin:0 auto;width:100%;padding:48px 80px 120px;display:flex;flex-direction:column;gap:120px;position:relative;z-index:10}
.about-header{display:grid;grid-template-columns:140px 1fr;gap:24px;align-items:baseline;padding:0 0 40px 0}
.top-label{font-weight:var(--fw-regular);font-size:var(--fs-base);color:var(--ink-3)}
.top-headline{font-weight:var(--fw-black);font-size:40px;line-height:1.25;letter-spacing:-1.2px;color:var(--ink);margin:0}
.top-section{background:var(--bg-2);border-radius:var(--r-lg);padding:24px;width:100%}
.top-grid{display:grid;grid-template-columns:.85fr 1.4fr 1fr;gap:20px;min-height:420px}
.top-left{display:flex;flex-direction:column;justify-content:space-between;padding:4px 0}
.top-left-content{display:flex;flex-direction:column;gap:16px}
.tl-icon{width:32px;height:32px;border-radius:50%;border:1.5px solid var(--line);display:flex;align-items:center;justify-content:center}
.tl-icon svg{width:14px;height:14px;color:var(--ink)}
.top-desc{font-size:var(--fs-md);line-height:var(--lh-loose);color:var(--ink-2);margin:0}
.feature-tags{display:flex;gap:12px;margin-top:4px;flex-wrap:wrap}
.feature-tag{font-size:var(--fs-sm);font-weight:var(--fw-semi);color:var(--ink-3);display:flex;align-items:center;gap:5px}
.feature-tag::before{content:'○';font-size:7px}
.top-left-buttons{display:flex;align-items:center;gap:8px;margin-top:20px}
.btn-start{font-weight:var(--fw-bold);font-size:var(--fs-base);color:var(--bg-1);background:var(--ink);border:none;border-radius:var(--r-full);padding:11px 22px;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;transition:background var(--d-tip) var(--ease-out),transform var(--d-press) var(--ease-out),box-shadow var(--d-tip) var(--ease-out)}
.btn-start:hover{background:var(--ink-2);transform:translateY(-1px);box-shadow:0 4px 12px oklch(from var(--ink) l c h / 0.15)}
.btn-start:active{transform:scale(0.97);transition-duration:80ms}
.btn-arrow{width:36px;height:36px;border-radius:50%;background:var(--ink);border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background var(--d-tip) var(--ease-out),transform var(--d-press) var(--ease-out),box-shadow var(--d-tip) var(--ease-out)}
.btn-arrow:hover{background:var(--ink-2);transform:translateY(-1px);box-shadow:0 4px 12px oklch(from var(--ink) l c h / 0.15)}
.btn-arrow:active{transform:scale(0.93);transition-duration:80ms}
.btn-arrow svg{width:14px;height:14px;color:var(--bg-1)}
.top-center{position:relative;border-radius:var(--r-lg);overflow:hidden;background:oklch(0.84 0.01 60)}
.main-visual{width:100%;height:100%;min-height:100%;background:linear-gradient(180deg,oklch(0.80 0.01 60) 0%,oklch(0.86 0.01 60) 100%)}
.center-label{position:absolute;top:16px;left:16px;font-weight:var(--fw-bold);font-size:var(--fs-md);color:var(--ink);background:var(--glass-bg);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-radius:var(--r-sm);padding:8px 14px;border:1px solid var(--glass-stroke-2)}
.top-right{display:flex;flex-direction:column;gap:16px}
.stacked-images{position:relative;width:100%;height:160px;margin-left:20px}
.stacked-img{position:absolute;width:110px;height:130px;border-radius:var(--r-md);box-shadow:0 6px 20px oklch(from var(--ink) l c h / 0.1);overflow:hidden}
.stacked-img:nth-child(1){top:15px;left:0;transform:rotate(-8deg);z-index:2;background:oklch(0.76 0.02 60)}
.stacked-img:nth-child(2){top:5px;left:70px;transform:rotate(5deg);z-index:1;background:oklch(0.73 0.02 55)}
.right-caption{font-size:var(--fs-base);line-height:1.5;color:var(--ink-3)}
.supporting-card{background:var(--bg-1);border-radius:var(--r-md);overflow:hidden;box-shadow:0 2px 10px oklch(from var(--ink) l c h / 0.03);border:1px solid var(--line);transition:transform var(--t-card),box-shadow var(--t-card),border-color var(--t-quick)}
.supporting-card:hover{transform:translateY(-4px);box-shadow:0 6px 20px oklch(from var(--ink) l c h / 0.06);border-color:oklch(from var(--violet) l c h / 0.12)}
.supporting-card:active{transform:scale(0.985);transition-duration:120ms}
.card-thumb{width:100%;height:120px;background:oklch(0.84 0.01 60)}
.card-bottom{padding:14px 16px;display:flex;align-items:flex-end;justify-content:space-between}
.card-text{display:flex;flex-direction:column}
.card-title{font-weight:var(--fw-bold);font-size:var(--fs-md);color:var(--ink);margin:0}
.card-arrow{width:28px;height:28px;border-radius:50%;background:var(--ink);display:flex;align-items:center;justify-content:center;text-decoration:none;flex-shrink:0}
.card-arrow svg{width:12px;height:12px;color:var(--bg-1)}
.stats-row{display:grid;grid-template-columns:repeat(4,1fr);text-align:center;padding:48px 0 0}
.stat-box{display:flex;flex-direction:column;align-items:center;gap:6px;padding:0 16px;border-left:1px solid var(--line);opacity:0;transform:translateY(12px);transition:opacity 500ms var(--ease-out),transform 500ms var(--ease-out)}
.stat-box:first-child{border-left:none}
.reveal-on-scroll.revealed .stat-box,.stats-row.revealed .stat-box{opacity:1;transform:none}
.stats-row.revealed .stat-box:nth-child(1){transition-delay:0ms}
.stats-row.revealed .stat-box:nth-child(2){transition-delay:80ms}
.stats-row.revealed .stat-box:nth-child(3){transition-delay:160ms}
.stats-row.revealed .stat-box:nth-child(4){transition-delay:240ms}
.stat-value{font-weight:var(--fw-black);font-size:36px;color:var(--ink);letter-spacing:-1px}
.stat-label{font-weight:var(--fw-regular);font-size:var(--fs-base);color:var(--ink-2)}
.section-title{font-weight:var(--fw-black);font-size:40px;letter-spacing:-1.5px;color:var(--ink);margin-bottom:40px}
.why-grid{display:grid;grid-template-columns:1fr 1.2fr 1fr;gap:48px}
.why-left{display:flex;flex-direction:column;gap:16px;padding-right:24px}
.why-left p{font-size:20px;line-height:1.5;color:var(--ink-2);margin:0}
.why-left p:first-child{color:var(--ink);font-weight:var(--fw-semi)}
.why-middle{background:var(--bg-2);border-radius:var(--r-xl);padding:40px;display:flex;flex-direction:column;gap:32px;justify-content:center;border:1px solid var(--line)}
.why-middle h3{font-weight:var(--fw-bold);font-size:var(--fs-2xl);line-height:1.3;color:var(--ink);letter-spacing:-.5px;margin:0}
.benefit-list{list-style:none;display:flex;flex-direction:column;gap:16px;padding:0;margin:0}
.benefit-list li{font-size:18px;font-weight:var(--fw-semi);color:var(--ink);display:flex;align-items:center;gap:16px}
.benefit-list li::before{content:'';width:8px;height:8px;border-radius:50%;background:var(--violet);flex-shrink:0}
.why-right{border-radius:var(--r-xl);background:var(--glass-bg);backdrop-filter:blur(16px);border:1px solid var(--line);padding:32px;display:flex;flex-direction:column;gap:16px;justify-content:center}
.wf-layer{background:var(--bg-1);border-radius:var(--r-md);padding:20px 24px;font-size:var(--fs-lg);font-weight:var(--fw-bold);color:var(--ink);box-shadow:0 4px 16px oklch(from var(--ink) l c h / 0.04);border:1px solid var(--line);transition:transform var(--motion-base)}
.why-right:hover .wf-layer{transform:translateX(8px)}
.system-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:20px}
.system-item{background:var(--glass-bg);backdrop-filter:blur(20px);border:1px solid var(--line);border-radius:var(--r-xl);padding:32px 24px;display:flex;flex-direction:column;gap:16px;text-decoration:none;color:inherit;transition:background var(--motion-base),transform var(--motion-base) cubic-bezier(.16,1,.3,1),box-shadow var(--motion-base)}
.system-item:hover{background:var(--bg-1);transform:translateY(-8px);box-shadow:0 16px 40px oklch(from var(--ink) l c h / 0.06)}
.sys-name{font-weight:var(--fw-black);font-size:24px;color:var(--ink);letter-spacing:-.5px}
.sys-arrow{color:var(--ink-3);font-size:24px}
.sys-desc{font-weight:var(--fw-semi);font-size:18px;color:var(--ink-2)}
.philosophy-list{display:flex;flex-direction:column}
.phil-item{font-weight:var(--fw-semi);font-size:40px;color:var(--ink-2);letter-spacing:-1.5px;padding:32px 0;border-bottom:1px solid var(--line);transition:color var(--motion-base),padding-left var(--motion-base);cursor:default;display:flex;align-items:center;gap:16px}
.phil-item::after{content:'→';font-size:var(--fs-2xl);opacity:0;transition:opacity var(--motion-base),transform var(--motion-base);transform:translateX(-8px)}
.phil-item:hover{color:var(--ink);padding-left:16px}
.phil-item:hover::after{opacity:1;transform:translateX(0)}
.cta-headline{font-weight:var(--fw-black);font-size:var(--fs-3xl);letter-spacing:-2px;color:var(--ink);line-height:1.15;margin-bottom:40px;max-width:720px}
.cta-buttons-row{display:flex;gap:16px}
.btn-primary-lg{font-weight:var(--fw-semi);font-size:var(--fs-lg);color:var(--bg-1);background:var(--ink);border:none;cursor:pointer;padding:16px 32px;border-radius:var(--r-md);text-decoration:none;transition:background var(--motion-fast),transform var(--motion-fast),box-shadow var(--motion-fast);display:inline-block}
.btn-primary-lg:hover{background:var(--ink);transform:translateY(-2px);box-shadow:0 8px 24px oklch(from var(--ink) l c h / 0.15)}
.btn-secondary-lg{font-weight:var(--fw-semi);font-size:var(--fs-lg);color:var(--ink);background:var(--bg-1);border:1.5px solid var(--line);cursor:pointer;padding:16px 32px;border-radius:var(--r-md);text-decoration:none;transition:background var(--motion-fast),transform var(--motion-fast);display:inline-block}
.btn-secondary-lg:hover{background:var(--bg-2);transform:translateY(-2px)}

/* ── About: Features grid ── */
.about-features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--space-6, 32px)}
.about-feature-card{background:var(--glass-bg);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--line);border-radius:var(--r-xl);padding:32px 28px;display:flex;flex-direction:column;gap:16px;transition:transform var(--motion-base) var(--ease-standard),box-shadow var(--motion-base) var(--ease-standard),border-color var(--motion-base)}
.about-feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:oklch(from var(--violet) l c h / 0.25)}
.about-feature-icon{width:48px;height:48px;border-radius:var(--r-md);background:var(--lavender);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.about-feature-icon svg{width:22px;height:22px;color:var(--violet)}
.about-feature-title{font-size:var(--fs-lg);font-weight:var(--fw-bold);color:var(--ink);margin:0;letter-spacing:-0.3px}
.about-feature-desc{font-size:var(--fs-base);color:var(--ink-2);line-height:var(--lh-loose);margin:0}
@media(max-width:768px){.about-features-grid{grid-template-columns:1fr}}
@media(min-width:769px) and (max-width:1024px){.about-features-grid{grid-template-columns:repeat(2,1fr)}}

/* ── About: Solution flow (numbered steps) ── */
.about-solution-flow {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px 0;
  margin-bottom: 32px;
}
.solution-step {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 20px;
  border-radius: var(--r-lg);
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--line);
  transition: background var(--motion-fast) var(--ease-standard),
              transform var(--motion-fast) var(--ease-standard),
              box-shadow var(--motion-fast);
}
.solution-step:hover {
  background: var(--glass-bg-strong);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.solution-step-num {
  font-family: var(--font-mono, 'Geist Mono', monospace);
  font-size: var(--fs-sm);
  font-weight: var(--fw-black);
  color: var(--violet);
  letter-spacing: 0.02em;
}
.solution-step-label {
  font-size: var(--fs-md);
  font-weight: var(--fw-bold);
  color: var(--ink);
  white-space: nowrap;
}
.solution-arrow {
  font-size: 18px;
  color: var(--ink-3);
  padding: 0 10px;
  flex-shrink: 0;
  opacity: 0.5;
}
.about-solution-desc {
  font-size: var(--fs-lg);
  color: var(--ink-2);
  line-height: 1.6;
  max-width: 800px;
  margin: 0;
}

/* ── About: Audience benefits ("For people planning...") ── */
.about-audience-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 48px;
  align-items: start;
}
.about-audience-benefits {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.about-benefit-item {
  font-size: var(--fs-lg);
  font-weight: var(--fw-semi);
  color: var(--ink-2);
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  gap: 14px;
  transition: color var(--motion-fast) var(--ease-standard),
              padding-left var(--motion-fast) var(--ease-standard);
}
.about-benefit-item:first-child {
  border-top: 1px solid var(--line);
}
.about-benefit-item::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--violet);
  flex-shrink: 0;
  opacity: 0.6;
  transition: opacity var(--motion-fast), transform var(--motion-fast);
}
.about-benefit-item:hover {
  color: var(--ink);
  padding-left: 8px;
}
.about-benefit-item:hover::before {
  opacity: 1;
  transform: scale(1.4);
}
.about-audience-cta {
  padding-top: 20px;
  flex-shrink: 0;
}
.about-final-sub {
  font-size: var(--fs-lg);
  color: var(--ink-2);
  line-height: 1.6;
  max-width: 680px;
  margin: 0 0 40px;
}

/* ── Feature Showcase ── */
.fs-tabs{display:flex;gap:6px;margin-bottom:32px;flex-wrap:wrap}
.fs-tab{display:inline-flex;align-items:center;gap:8px;padding:10px 20px;border-radius:var(--r-full);border:1px solid var(--line);background:var(--glass-bg);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);color:var(--ink-2);font-size:var(--fs-base);font-weight:var(--fw-semi);cursor:pointer;transition:all var(--motion-fast) var(--ease-standard)}
.fs-tab:hover{background:var(--glass-bg-strong);color:var(--ink);transform:translateY(-1px)}
.fs-tab--on{background:var(--ink);color:var(--bg-1);border-color:var(--ink);box-shadow:var(--shadow-md);transform:translateY(-1px)}
.fs-tab--on:hover{background:var(--ink);color:var(--bg-1)}
.fs-detail{display:grid;grid-template-columns:1fr 1fr;gap:48px;background:var(--glass-bg);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid var(--glass-stroke-2);border-radius:var(--r-xl);padding:48px;box-shadow:inset 0 1px 0 var(--glass-stroke),var(--shadow-sm);animation:kalFadeUp var(--motion-base) var(--ease-decelerate) both}
.fs-detail-left{display:flex;flex-direction:column;gap:20px}
.fs-icon-badge{width:56px;height:56px;border-radius:var(--r-md);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.fs-detail-title{font-size:var(--fs-xl);font-weight:var(--fw-black);color:var(--ink);letter-spacing:-0.5px;line-height:1.3;margin:0}
.fs-detail-desc{font-size:var(--fs-md);color:var(--ink-2);line-height:1.6;margin:0}
.fs-detail-right{display:flex;flex-direction:column;gap:16px;justify-content:center}
.fs-point{display:flex;align-items:flex-start;gap:14px;font-size:var(--fs-md);color:var(--ink);font-weight:var(--fw-medium);line-height:1.5;animation:kalFadeUp var(--motion-base) var(--ease-decelerate) backwards;animation-delay:calc(80ms * var(--i, 0))}
.fs-point-dot{width:8px;height:8px;border-radius:50%;flex-shrink:0;margin-top:7px}
@media(max-width:768px){.fs-detail{grid-template-columns:1fr;gap:32px;padding:28px}}

.reveal-on-scroll{opacity:0;transform:translateY(24px);transition:opacity var(--motion-slow) var(--ease-decelerate),transform var(--motion-slow) var(--ease-decelerate)}
.reveal-on-scroll.revealed{opacity:1;transform:translateY(0)}

/* ── Auth (Login / Signup) ── */
.auth-page{position:relative;z-index:2;width:100%;height:100vh;display:flex}
.back-home{position:fixed;top:28px;left:32px;z-index:200;display:inline-flex;align-items:center;gap:7px;font-weight:var(--fw-semi);font-size:var(--fs-base);color:var(--ink-2);text-decoration:none;background:var(--bg-1);backdrop-filter:blur(16px);border:1px solid var(--line);border-radius:var(--r-full);padding:9px 18px 9px 12px;box-shadow:0 2px 12px oklch(from var(--ink) l c h / 0.06);transition:background var(--d-tip) var(--ease-out),transform var(--d-press) var(--ease-out),box-shadow var(--d-tip) var(--ease-out);animation:fadeUp .5s var(--ease-out) .1s both}
.back-home:active{transform:translateY(0) scale(0.97);transition-duration:80ms}
.back-home:hover{background:var(--bg-1);color:var(--ink);transform:translateY(-1px)}
.back-home svg{width:15px;height:15px}
.brand-side{width:50%;height:100%;display:flex;flex-direction:column;justify-content:center;padding:0 0 0 128px;gap:40px;position:relative;z-index:10}
.brand-logo{animation:fadeUp .7s cubic-bezier(.16,1,.3,1) .2s both}
.brand-logo svg{height:72px;width:auto}
.brand-text{animation:fadeUp .7s cubic-bezier(.16,1,.3,1) .3s both}
.brand-headline{font-weight:200;font-size:52px;letter-spacing:-2.5px;color:var(--ink);line-height:1.05;margin-bottom:16px}
.brand-subtext{font-size:18px;line-height:1.5;color:var(--ink-2);max-width:460px}
.brand-card{background:var(--glass-bg);backdrop-filter:blur(20px);border:1px solid var(--line);border-radius:var(--r-xl);padding:28px 32px;box-shadow:0 4px 24px oklch(from var(--ink) l c h / 0.05);animation:fadeUp .7s cubic-bezier(.16,1,.3,1) .5s both}
.brand-card-title{font-weight:var(--fw-bold);font-size:17px;color:var(--ink);letter-spacing:-.3px;margin-bottom:10px}
.brand-card-desc{font-size:var(--fs-md);line-height:1.65;color:var(--ink-3);margin-bottom:22px}
.avatar-row{display:flex;align-items:center;gap:12px}
.avatars{display:flex}
.av{width:34px;height:34px;border-radius:50%;border:2px solid var(--white);margin-left:-8px;background:oklch(0.90 0 0);flex-shrink:0}
.avatars .av:first-child{margin-left:0}
.av-plus{width:34px;height:34px;border-radius:50%;border:2px solid var(--white);margin-left:-8px;background:linear-gradient(135deg,var(--violet),oklch(0.55 0.20 280));display:flex;align-items:center;justify-content:center;font-size:var(--fs-sm);font-weight:var(--fw-black);color:var(--bg-1)}
.av-label{font-size:var(--fs-base);color:var(--ink-3)}
.av-label strong{color:var(--ink);font-weight:var(--fw-bold)}
.login-side,.signup-side{flex:1;height:100%;display:flex;align-items:center;justify-content:center;padding:40px 48px;position:relative;z-index:10}
.login-card,.signup-card{width:100%;max-width:440px;background:var(--bg-1);border:1px solid var(--line);box-shadow:0 8px 32px oklch(from var(--ink) l c h / 0.04);border-radius:var(--r-xl);padding:36px 32px;animation:fadeUp .7s cubic-bezier(.16,1,.3,1) .25s both}
.login-title,.signup-title{font-weight:var(--fw-black);font-size:26px;letter-spacing:-1px;color:var(--ink);margin-bottom:6px}
.login-subtitle,.signup-subtitle{font-size:var(--fs-md);color:var(--ink-3);line-height:1.5;margin-bottom:32px}
.login-form,.signup-form{display:flex;flex-direction:column;gap:15px}
.form-group{display:flex;flex-direction:column;gap:6px}
.pw-wrap{position:relative}
.pw-wrap .kal-input{padding-right:46px}
.toggle-pw{position:absolute;right:13px;top:50%;transform:translateY(-50%);background:none;border:none;cursor:pointer;padding:4px;color:var(--ink-3);display:flex;align-items:center}
.toggle-pw:hover{color:var(--ink)}
.toggle-pw svg{width:18px;height:18px}
.login-btn,.signup-btn{width:100%;margin-top:4px;padding:12px 20px;font-size:var(--fs-md)}
.login-btn:hover,.signup-btn:hover{filter:brightness(1.12);transform:translateY(-2px);box-shadow:var(--shadow-lg),0 0 20px oklch(from var(--violet) l c h / 0.20)}
.login-btn:active,.signup-btn:active{filter:brightness(0.95);transform:translateY(0) scale(0.97);transition-duration:80ms}
.divider{display:flex;align-items:center;gap:14px}
.div-line{flex:1;height:1px;background:var(--line)}
.div-txt{font-size:var(--fs-sm);font-weight:var(--fw-semi);color:var(--ink-3)}
.social-btn{width:100%;padding:12px 20px;font-size:var(--fs-md)}
.social-btn:hover{background:var(--bg-2);border-color:oklch(from var(--violet) l c h / 0.20);transform:translateY(-1px);box-shadow:var(--shadow-md)}
.social-btn:active{transform:translateY(0) scale(0.97);transition-duration:80ms}
.auth-footer{text-align:center;margin-top:22px}
.auth-footer p{font-size:var(--fs-base);color:var(--ink-3)}
.auth-footer a{font-weight:var(--fw-bold);color:var(--ink);text-decoration:none;border-bottom:1.5px solid transparent;transition:color var(--motion-fast),border-color var(--motion-fast)}
.auth-footer a:hover{color:var(--violet);border-bottom-color:var(--violet)}

/* ── Service Pages ── */
.service-section{padding:80px 120px;position:relative;z-index:10}
.service-section-title{font-weight:var(--fw-black);font-size:var(--fs-3xl);letter-spacing:-2px;color:var(--ink);margin-bottom:16px}
.service-section-sub{font-size:18px;color:var(--ink-2);margin-bottom:48px;max-width:600px;line-height:1.5}
.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;max-width:1100px}
.service-card{background:var(--glass-bg);backdrop-filter:blur(16px);border:1px solid var(--line);border-radius:var(--r-xl);padding:32px;transition:transform var(--motion-base),box-shadow var(--motion-base)}
.service-card:hover{transform:translateY(-6px);box-shadow:0 16px 40px oklch(from var(--ink) l c h / 0.08)}
.service-card-icon{width:44px;height:44px;border-radius:var(--r-md);background:var(--bg-2);display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.service-card-icon svg{width:22px;height:22px;color:var(--ink)}
.service-card-title{font-weight:var(--fw-bold);font-size:20px;color:var(--ink);letter-spacing:-.3px;margin-bottom:8px}
.service-card-desc{font-size:var(--fs-md);line-height:1.6;color:var(--ink-2)}

/* ── Responsive ── */
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}}
@media(max-width:1200px){
  nav.universal-nav{padding:16px 48px}
  .hero{padding:0 48px;padding-bottom:60px}
  .hero-headline{font-size:64px;letter-spacing:-3.4px}
  .blog-section{padding:40px 48px 64px}
  .about-main{padding:40px 48px 96px;gap:88px}
  .service-section{padding:64px 48px}
  .site-footer{padding:20px 48px}
  .system-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .top-grid{grid-template-columns:1fr 1.2fr;min-height:0}
  .why-grid{gap:32px}
  .phil-item{font-size:32px}
  .cta-headline{font-size:40px}
  .section-title{font-size:34px}
  .service-section-title{font-size:38px}
  .brand-side{padding:0 0 0 64px}
  .brand-headline{font-size:42px;letter-spacing:-2px}
  .about-audience-grid{gap:36px}
}
@media(max-width:900px){
  nav.universal-nav{padding:14px 24px}
  .hero{padding:0 24px;padding-bottom:48px}
  .hero-headline{font-size:52px;letter-spacing:-2.6px}
  .hero-subtitle{font-size:18px;width:auto;max-width:100%}
  .blog-section{padding:32px 24px 56px}
  .blog-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .about-main{padding:32px 24px 80px;gap:72px}
  .top-grid{grid-template-columns:1fr}
  .why-grid{grid-template-columns:1fr}
  .system-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stats-row{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px 0}
  .stat-box{padding:0 12px}
  .service-section{padding:48px 24px}
  .service-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .site-footer{padding:20px 24px}
  .phil-item{font-size:28px;letter-spacing:-.8px;padding:24px 0}
  .cta-headline{font-size:34px;letter-spacing:-1.2px}
  .section-title{font-size:30px;letter-spacing:-1px;margin-bottom:28px}
  .brand-side{width:100%;padding:80px 32px 40px;gap:28px}
  .brand-headline{font-size:38px}
  .auth-page{flex-direction:column;height:auto;min-height:100vh;overflow:auto}
  .login-side,.signup-side{padding:32px 24px 56px}
  .about-header{grid-template-columns:1fr;gap:8px}
  .top-headline{font-size:32px;letter-spacing:-.8px}
  .about-audience-grid{grid-template-columns:1fr;gap:24px}
  .about-solution-flow{gap:4px 0}
  .solution-step{padding:10px 14px}
  .solution-arrow{padding:0 6px}
}
@media(max-width:768px){
  nav.universal-nav{padding:14px 20px;flex-wrap:wrap}
  nav.universal-nav .nav-links{display:none}
  nav.universal-nav .mega-menu-wrapper{display:none}
  .hero{padding:0 20px;padding-bottom:40px}
  .hero-inner{width:100%;max-width:100%}
  .hero-headline{font-size:42px;letter-spacing:-1.8px;margin-bottom:24px;max-width:100%;overflow-wrap:break-word}
  .hero-headline .letter{display:inline;line-height:inherit}
  .hero-subtitle{font-size:var(--fs-lg);width:auto;max-width:100%;margin-bottom:32px}
  .hero-cta-wrapper{flex-direction:column;width:100%}
  .hero-cta-wrapper a{width:100%}
  .composer{max-width:100%}
  .composer-row{flex-wrap:wrap;gap:8px}
  .composer-tools{flex-wrap:wrap}
  .kal-blob{display:none}
  .blog-section{padding:28px 20px 56px}
  .blog-grid{grid-template-columns:1fr}
  .about-main{padding:28px 20px 72px;gap:56px}
  .top-grid{grid-template-columns:1fr;min-height:0}
  .why-grid{grid-template-columns:1fr}
  .system-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stats-row{grid-template-columns:repeat(2,minmax(0,1fr));padding-top:32px}
  .brand-side{width:100%;padding:72px 24px 32px}
  .login-side,.signup-side{padding:32px 20px 48px}
  .auth-page{flex-direction:column;height:auto;min-height:100vh;overflow:auto}
  .service-section{padding:48px 20px}
  .service-section-title{font-size:32px;letter-spacing:-1px}
  .service-section-sub{font-size:var(--fs-lg);margin-bottom:32px}
  .service-grid{grid-template-columns:1fr}
  .site-footer{padding:20px;flex-direction:column;gap:12px;text-align:center}
  .footer-links{flex-wrap:wrap;justify-content:center}
  .phil-item{font-size:24px;padding:20px 0}
  .phil-item::after{display:none}
  .about-header{grid-template-columns:1fr;gap:12px}
  .top-headline{font-size:28px;letter-spacing:-.6px}
  .top-section{padding:18px}
  .stacked-images{margin-left:0;height:140px}
  .stacked-img{width:96px;height:120px}
  .cta-headline{font-size:30px;letter-spacing:-1px;margin-bottom:24px}
  .cta-buttons-row{flex-direction:column;align-items:stretch;width:100%}
  .cta-buttons-row .btn-primary-lg,.cta-buttons-row .btn-secondary-lg{width:100%;text-align:center}
  .brand-headline{font-size:32px;letter-spacing:-1.2px}
  .brand-subtext{font-size:var(--fs-lg)}
  .brand-card{padding:22px 24px}
  .back-home{top:16px;left:16px;font-size:var(--fs-sm);padding:8px 14px 8px 10px}
  .why-middle{padding:28px}
  .why-middle h3{font-size:var(--fs-xl)}
  .benefit-list li{font-size:var(--fs-lg);gap:12px}
  .why-right{padding:24px}
  .wf-layer{font-size:var(--fs-md);padding:16px 18px}
  .about-audience-grid{grid-template-columns:1fr;gap:20px}
  .about-benefit-item{font-size:var(--fs-md);padding:14px 0}
  .about-solution-flow{flex-direction:column;align-items:flex-start;gap:2px}
  .solution-arrow{display:none}
  .solution-step{width:100%}
  .about-solution-desc{font-size:var(--fs-md)}
  .login-card,.signup-card{padding:28px 22px}
  .login-title,.signup-title{font-size:24px}
}
@media(max-width:480px){
  .hero-headline{font-size:36px;letter-spacing:-1.4px}
  .badge-row{flex-direction:column;align-items:center}
  .system-grid{grid-template-columns:1fr}
  .stats-row{grid-template-columns:1fr;padding-top:24px}
  .stat-box{border-left:0;border-top:1px solid var(--line);padding:14px 0}
  .stat-box:first-child{border-top:0}
  .phil-item{font-size:20px}
  .top-headline{font-size:24px}
  .top-section{padding:14px}
  .top-left-buttons{flex-wrap:wrap}
  .brand-headline{font-size:28px;letter-spacing:-1px}
  .cta-headline{font-size:26px}
  .service-section-title{font-size:28px}
  .section-title{font-size:26px;margin-bottom:20px}
}

/* ── Theme crossfade — smooth color transition on theme switch ──── */
body,.page,nav.universal-nav,.mega-menu-wrapper,.site-footer,
.hero,.about-main,.blog-section,.auth-page,.service-section{
  transition:background-color 420ms var(--ease-smooth),color 420ms var(--ease-smooth),border-color 420ms var(--ease-smooth);
}

/* ── Notification dot pulse ───────────────────────────────────────── */
@keyframes kalDotPulse{0%,100%{box-shadow:0 0 0 0 oklch(0.65 0.18 25 / 0.5)}50%{box-shadow:0 0 0 6px oklch(0.65 0.18 25 / 0)}}
.sp-tb-dot,.c-tb-dot{animation:kalDotPulse 2s var(--ease-smooth) infinite}

/* ── Badge hover pop ──────────────────────────────────────────────── */
.badge-dark,.badge-light{transition:transform var(--d-tip) var(--ease-out),box-shadow var(--d-tip) var(--ease-out)}
.badge-dark:hover,.badge-light:hover{transform:translateY(-1px);box-shadow:0 4px 12px oklch(from var(--ink) l c h / 0.10)}

/* ── Feature tag hover ────────────────────────────────────────────── */
.feature-tag{transition:color var(--d-tip) var(--ease-out)}
.feature-tag:hover{color:var(--ink)}

/* ── Composer glow pulse ──────────────────────────────────────────── */
@keyframes kalGlowPulse{0%,100%{opacity:.7}50%{opacity:1}}
.composer-glow{animation:kalGlowPulse 3s ease-in-out infinite}

/* ── Model dot breathe ────────────────────────────────────────────── */
@keyframes kalBreathe{0%,100%{box-shadow:0 0 0 2px oklch(.85 .10 175/.3)}50%{box-shadow:0 0 0 5px oklch(.85 .10 175/.15)}}
.m-dot{animation:kalBreathe 2.5s ease-in-out infinite}

/* ── Divider separator pulse ──────────────────────────────────────── */
.divider::before{transition:width var(--motion-base) var(--ease-out)}