/* ============================================================
   WATER4PEPTIDES — Bacteriostatic Water Storefront (demo)
   Archetype: Swiss/International × Minimalist-Refined (lab-clinical)
   Differentiator: Certificate-of-Analysis / instrument-readout motif
   ============================================================ */

/* ---------- Design Tokens ---------- */
:root {
  /* palette — cool near-white surface · deep navy ink · sterile teal · amber notice */
  --c-surface:      #f5f8f9;
  --c-surface-2:    #ffffff;
  --c-panel:        #fbfdfd;
  --c-ink:          #0b1f2a;
  --c-ink-soft:     #2c4350;
  --c-muted:        #5e747f;
  --c-faint:        #8aa0aa;
  --c-line:         #dce6e9;
  --c-line-strong:  #c3d3d8;
  --c-accent:       #0aa39a;   /* sterile teal */
  --c-accent-deep:  #057a73;
  --c-accent-wash:  #e2f4f2;
  --c-cyan:         #0b6fb0;
  --c-amber:        #b87514;
  --c-amber-wash:   #fbf1dd;
  --c-success:      #0f8a5f;
  --c-error:        #c0392b;

  /* type */
  --f-display: "Space Grotesk", "Helvetica Neue", sans-serif;
  --f-body:    "IBM Plex Sans", "Helvetica Neue", sans-serif;
  --f-mono:    "IBM Plex Mono", ui-monospace, "SFMono-Regular", monospace;

  /* spacing scale */
  --s-2xs: .25rem;
  --s-xs:  .5rem;
  --s-sm:  .75rem;
  --s-md:  1rem;
  --s-lg:  1.5rem;
  --s-xl:  2.5rem;
  --s-2xl: 4rem;
  --s-3xl: 6.5rem;

  /* shape & depth */
  --radius:    14px;
  --radius-sm: 8px;
  --shadow-sm: 0 1px 2px rgba(11,31,42,.05), 0 1px 1px rgba(11,31,42,.04);
  --shadow-md: 0 4px 12px rgba(11,31,42,.06), 0 12px 28px rgba(11,31,42,.07);
  --shadow-lg: 0 8px 24px rgba(11,31,42,.10), 0 28px 64px rgba(11,31,42,.13);
  --ring: 0 0 0 3px rgba(10,163,154,.35);

  --maxw: 1200px;
  --ease: cubic-bezier(.22,.61,.36,1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}
body {
  font-family: var(--f-body);
  background: var(--c-surface);
  color: var(--c-ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-feature-settings: "ss01", "cv05";
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; border: none; background: none; }
ul { list-style: none; padding: 0; }
:focus-visible { outline: none; box-shadow: var(--ring); border-radius: 4px; }

/* ---------- Layout primitives ---------- */
.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: clamp(1.1rem, 4vw, 2.5rem); }
.eyebrow {
  font-family: var(--f-mono);
  font-size: .72rem;
  font-weight: 500;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--c-accent-deep);
  display: inline-flex;
  align-items: center;
  gap: .55rem;
}
.eyebrow::before {
  content: "";
  width: 26px; height: 1px;
  background: var(--c-accent);
}
.section { padding-block: clamp(3.2rem, 7vw, var(--s-3xl)); }
.section-head { max-width: 56ch; margin-bottom: var(--s-xl); }
.section-head h2 {
  font-family: var(--f-display);
  font-weight: 600;
  font-size: clamp(1.7rem, 3.6vw, 2.7rem);
  line-height: 1.08;
  letter-spacing: -.02em;
  margin-top: var(--s-sm);
}
.section-head p { color: var(--c-muted); margin-top: var(--s-md); font-size: 1.02rem; max-width: 52ch; }

/* ---------- Sterility data strip (top) ---------- */
.ticker {
  background: var(--c-ink);
  color: #cfe6e4;
  font-family: var(--f-mono);
  font-size: .72rem;
  letter-spacing: .08em;
  overflow: hidden;
  white-space: nowrap;
  border-bottom: 1px solid #16323f;
}
.ticker__track {
  display: inline-flex;
  gap: 2.5rem;
  padding-block: .42rem;
  animation: ticker 38s linear infinite;
  will-change: transform;
}
.ticker span { display: inline-flex; align-items: center; gap: .5rem; }
.ticker b { color: var(--c-accent); font-weight: 500; }
@keyframes ticker { to { transform: translateX(-50%); } }
@media (prefers-reduced-motion: reduce) { .ticker__track { animation: none; } }

/* ---------- Header ---------- */
.hdr {
  position: sticky; top: 0; z-index: 60;
  background: rgba(245,248,249,.78);
  backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--c-line);
}
.hdr__bar { display: flex; align-items: center; gap: var(--s-lg); height: 68px; }
.brand { display: flex; align-items: center; gap: .6rem; font-family: var(--f-display); font-weight: 700; font-size: 1.18rem; letter-spacing: -.01em; }
.brand__mark { width: 30px; height: 30px; flex: none; }
.brand small { font-family: var(--f-mono); font-weight: 400; font-size: .58rem; letter-spacing: .18em; color: var(--c-muted); display: block; margin-top: 1px; }
.nav { display: flex; gap: var(--s-lg); margin-left: auto; }
.nav a { font-size: .92rem; color: var(--c-ink-soft); position: relative; padding-block: .3rem; }
.nav a::after { content:""; position:absolute; left:0; bottom:0; width:0; height:2px; background:var(--c-accent); transition: width .3s var(--ease); }
.nav a:hover { color: var(--c-ink); }
.nav a:hover::after { width: 100%; }
.hdr__actions { display: flex; align-items: center; gap: var(--s-sm); margin-left: var(--s-md); }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  font-weight: 500; font-size: .92rem;
  padding: .72rem 1.25rem;
  border-radius: 999px;
  transition: transform .2s var(--ease), background .2s var(--ease), box-shadow .2s var(--ease), color .2s var(--ease);
  white-space: nowrap;
}
.btn--primary { background: var(--c-accent); color: #fff; box-shadow: var(--shadow-sm); }
.btn--primary:hover { background: var(--c-accent-deep); transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn--ghost { border: 1px solid var(--c-line-strong); color: var(--c-ink); background: var(--c-surface-2); }
.btn--ghost:hover { border-color: var(--c-accent); color: var(--c-accent-deep); }
.btn--block { width: 100%; }
.btn--lg { padding: .95rem 1.6rem; font-size: 1rem; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

.cart-btn { position: relative; display: inline-flex; align-items: center; gap: .5rem; padding: .6rem .95rem; border: 1px solid var(--c-line-strong); border-radius: 999px; background: var(--c-surface-2); font-family: var(--f-mono); font-size: .82rem; transition: border-color .2s var(--ease); }
.cart-btn:hover { border-color: var(--c-accent); }
.cart-btn__count {
  min-width: 20px; height: 20px; padding-inline: 5px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--c-accent); color: #fff; border-radius: 999px;
  font-size: .7rem; font-weight: 600;
  transform: scale(0); transition: transform .25s var(--ease);
}
.cart-btn__count.is-on { transform: scale(1); }
.cart-btn.bump { animation: bump .4s var(--ease); }
@keyframes bump { 30% { transform: scale(1.12); } }

.menu-toggle { display: none; }

/* ---------- Hero ---------- */
.hero { position: relative; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(70% 120% at 88% -10%, rgba(10,163,154,.10), transparent 60%),
    radial-gradient(50% 90% at 10% 110%, rgba(11,111,176,.07), transparent 55%);
  pointer-events: none;
}
.hero__grid {
  position: relative;
  display: grid; grid-template-columns: 1.05fr .95fr; gap: var(--s-xl);
  align-items: center;
  padding-block: clamp(2.6rem, 6vw, 5.5rem);
}
.hero h1 {
  font-family: var(--f-display);
  font-weight: 600;
  font-size: clamp(2.3rem, 6vw, 4.1rem);
  line-height: 1.02;
  letter-spacing: -.03em;
  margin-top: var(--s-md);
}
.hero h1 em { font-style: normal; color: var(--c-accent-deep); }
.hero__sub { color: var(--c-muted); font-size: clamp(1rem, 1.6vw, 1.15rem); max-width: 46ch; margin-top: var(--s-lg); }
.hero__cta { display: flex; flex-wrap: wrap; gap: var(--s-sm); margin-top: var(--s-xl); }
.hero__stats { display: flex; gap: var(--s-xl); margin-top: var(--s-xl); padding-top: var(--s-lg); border-top: 1px solid var(--c-line); }
.hero__stat .n { font-family: var(--f-display); font-weight: 600; font-size: 1.5rem; letter-spacing: -.02em; }
.hero__stat .l { font-family: var(--f-mono); font-size: .68rem; letter-spacing: .14em; text-transform: uppercase; color: var(--c-muted); }

/* hero diagram (vial + technical callouts) */
.hero__viz { position: relative; display: grid; place-items: center; min-height: 380px; }
.viz-card {
  position: relative;
  background: var(--c-surface-2);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: var(--s-xl) var(--s-lg);
  width: min(360px, 100%);
}
.viz-card__head { display: flex; justify-content: space-between; align-items: center; font-family: var(--f-mono); font-size: .68rem; letter-spacing: .12em; color: var(--c-muted); text-transform: uppercase; }
.viz-card__dot { width: 8px; height: 8px; border-radius: 50%; background: var(--c-success); box-shadow: 0 0 0 4px rgba(15,138,95,.15); }
.viz-vial { margin: var(--s-lg) auto; width: 120px; }
.callout { position: absolute; font-family: var(--f-mono); font-size: .68rem; color: var(--c-ink-soft); background: var(--c-surface-2); border: 1px solid var(--c-line); border-radius: 6px; padding: .3rem .55rem; box-shadow: var(--shadow-sm); }
.callout b { color: var(--c-accent-deep); }
.callout--1 { top: 14%; right: -8%; }
.callout--2 { top: 46%; left: -12%; }
.callout--3 { bottom: 10%; right: -6%; }
@media (max-width: 600px){ .callout{ display:none; } }

/* ---------- Marquee logos / trust bar ---------- */
.trustbar { border-block: 1px solid var(--c-line); background: var(--c-panel); }
.trustbar__row { display: flex; flex-wrap: wrap; gap: clamp(1.2rem,4vw,3rem); justify-content: space-between; align-items: center; padding-block: var(--s-lg); }
.trust-item { display: flex; align-items: center; gap: .6rem; font-size: .86rem; color: var(--c-ink-soft); }
.trust-item svg { width: 20px; height: 20px; color: var(--c-accent); flex: none; }

/* ---------- Product grid ---------- */
.products { display: grid; grid-template-columns: repeat(auto-fill, minmax(270px, 1fr)); gap: var(--s-lg); }
.card {
  position: relative;
  background: var(--c-surface-2);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: var(--s-lg);
  display: flex; flex-direction: column;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--c-line-strong); }
.card__tag {
  position: absolute; top: var(--s-md); right: var(--s-md);
  font-family: var(--f-mono); font-size: .62rem; letter-spacing: .1em; text-transform: uppercase;
  background: var(--c-accent-wash); color: var(--c-accent-deep);
  padding: .25rem .5rem; border-radius: 5px;
}
.card__viz { height: 168px; display: grid; place-items: center; margin-bottom: var(--s-sm); }
.card__viz svg { height: 152px; transition: transform .4s var(--ease); }
.card:hover .card__viz svg { transform: translateY(-3px) rotate(-1.5deg); }
.card__sku { font-family: var(--f-mono); font-size: .68rem; letter-spacing: .08em; color: var(--c-faint); }
.card__name { font-family: var(--f-display); font-weight: 600; font-size: 1.15rem; letter-spacing: -.01em; margin-top: .15rem; }
.card__spec { display: flex; flex-wrap: wrap; gap: .35rem; margin-top: var(--s-sm); }
.chip { font-family: var(--f-mono); font-size: .66rem; letter-spacing: .04em; color: var(--c-ink-soft); background: var(--c-surface); border: 1px solid var(--c-line); border-radius: 5px; padding: .2rem .45rem; }
.card__foot { margin-top: auto; padding-top: var(--s-md); display: flex; align-items: flex-end; justify-content: space-between; gap: var(--s-sm); }
.price { font-family: var(--f-mono); font-weight: 600; font-size: 1.35rem; letter-spacing: -.01em; }
.price small { font-size: .72rem; color: var(--c-muted); font-weight: 400; letter-spacing: .04em; }
.price del { display:block; font-size:.72rem; color: var(--c-faint); font-weight: 400; }
.add-btn {
  display: inline-flex; align-items: center; gap: .4rem;
  background: var(--c-ink); color: #fff;
  padding: .6rem .95rem; border-radius: 999px; font-size: .85rem; font-weight: 500;
  transition: background .2s var(--ease), transform .2s var(--ease);
}
.add-btn:hover { background: var(--c-accent-deep); transform: translateY(-1px); }
.add-btn.added { background: var(--c-success); }

/* ---------- COA / Trust panel ---------- */
.coa-layout { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s-xl); align-items: start; }
.coa {
  background: var(--c-surface-2);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}
.coa__top { background: var(--c-ink); color: #dbeeec; padding: var(--s-md) var(--s-lg); display: flex; justify-content: space-between; align-items: center; }
.coa__top h3 { font-family: var(--f-display); font-weight: 600; font-size: 1rem; letter-spacing: -.01em; color:#fff; }
.coa__top span { font-family: var(--f-mono); font-size: .68rem; color: var(--c-accent); letter-spacing: .1em; }
.coa__rows { padding: var(--s-sm) var(--s-lg) var(--s-lg); }
.coa-row { display: grid; grid-template-columns: 1fr auto auto; gap: var(--s-md); align-items: center; padding-block: .7rem; border-bottom: 1px dashed var(--c-line); font-size: .9rem; }
.coa-row:last-child { border-bottom: none; }
.coa-row .k { color: var(--c-ink-soft); }
.coa-row .v { font-family: var(--f-mono); font-size: .82rem; color: var(--c-ink); }
.pass { font-family: var(--f-mono); font-size: .68rem; letter-spacing: .08em; color: var(--c-success); display: inline-flex; align-items: center; gap: .35rem; }
.pass::before { content:""; width: 7px; height: 7px; border-radius: 50%; background: var(--c-success); }
.coa__copy h2 { font-family: var(--f-display); font-weight: 600; font-size: clamp(1.6rem,3.2vw,2.3rem); line-height: 1.1; letter-spacing: -.02em; }
.coa__copy p { color: var(--c-muted); margin-top: var(--s-md); }
.coa__list { margin-top: var(--s-lg); display: grid; gap: var(--s-sm); }
.coa__list li { display: flex; gap: .65rem; align-items: flex-start; font-size: .95rem; color: var(--c-ink-soft); }
.coa__list svg { width: 19px; height: 19px; color: var(--c-accent); flex: none; margin-top: 2px; }

/* ---------- Steps ---------- */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--s-lg); counter-reset: step; }
.step { padding: var(--s-lg); background: var(--c-panel); border: 1px solid var(--c-line); border-radius: var(--radius); position: relative; }
.step::before {
  counter-increment: step; content: counter(step, decimal-leading-zero);
  font-family: var(--f-mono); font-size: .8rem; color: var(--c-accent-deep);
  background: var(--c-accent-wash); border-radius: 6px; padding: .2rem .5rem;
}
.step h4 { font-family: var(--f-display); font-weight: 600; font-size: 1.1rem; margin-top: var(--s-md); }
.step p { color: var(--c-muted); font-size: .92rem; margin-top: .4rem; }

/* ---------- FAQ ---------- */
.faq { max-width: 800px; margin-inline: auto; border-top: 1px solid var(--c-line); }
.faq details { border-bottom: 1px solid var(--c-line); }
.faq summary { display: flex; justify-content: space-between; align-items: center; gap: var(--s-md); padding: var(--s-lg) 0; cursor: pointer; font-family: var(--f-display); font-weight: 500; font-size: 1.08rem; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary .ico { flex: none; width: 26px; height: 26px; display: grid; place-items: center; border: 1px solid var(--c-line-strong); border-radius: 50%; transition: transform .3s var(--ease), background .3s var(--ease), color .3s var(--ease); }
.faq details[open] summary .ico { transform: rotate(45deg); background: var(--c-accent); color: #fff; border-color: var(--c-accent); }
.faq p { color: var(--c-muted); padding-bottom: var(--s-lg); max-width: 68ch; }

/* ---------- Compliance / regulatory notice ---------- */
.notice {
  background: var(--c-amber-wash);
  border: 1px solid #ecd9af;
  border-left: 4px solid var(--c-amber);
  border-radius: var(--radius-sm);
  padding: var(--s-lg);
  display: flex; gap: var(--s-md); align-items: flex-start;
}
.notice svg { width: 26px; height: 26px; color: var(--c-amber); flex: none; }
.notice h4 { font-family: var(--f-mono); font-size: .78rem; letter-spacing: .12em; text-transform: uppercase; color: var(--c-amber); }
.notice p { color: #6b5320; font-size: .9rem; margin-top: .4rem; max-width: 90ch; }

/* ---------- CTA band ---------- */
.cta-band { background: var(--c-ink); color: #fff; border-radius: var(--radius); padding: clamp(2rem,5vw,3.5rem); position: relative; overflow: hidden; }
.cta-band::before { content:""; position:absolute; inset:0; background: radial-gradient(60% 140% at 90% 10%, rgba(10,163,154,.25), transparent 60%); }
.cta-band__in { position: relative; display: flex; flex-wrap: wrap; gap: var(--s-lg); align-items: center; justify-content: space-between; }
.cta-band h2 { font-family: var(--f-display); font-weight: 600; font-size: clamp(1.6rem,3.6vw,2.6rem); line-height: 1.05; letter-spacing: -.02em; max-width: 18ch; }
.cta-band p { color: #9fc4c1; margin-top: var(--s-sm); max-width: 40ch; }

/* ---------- Footer ---------- */
.ftr { background: var(--c-panel); border-top: 1px solid var(--c-line); padding-block: var(--s-2xl) var(--s-lg); margin-top: var(--s-2xl); }
.ftr__grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: var(--s-xl); }
.ftr h5 { font-family: var(--f-mono); font-size: .72rem; letter-spacing: .14em; text-transform: uppercase; color: var(--c-muted); margin-bottom: var(--s-md); }
.ftr a { color: var(--c-ink-soft); font-size: .92rem; display: block; padding-block: .3rem; transition: color .2s; }
.ftr a:hover { color: var(--c-accent-deep); }
.ftr__brand p { color: var(--c-muted); font-size: .9rem; margin-top: var(--s-sm); max-width: 34ch; }
.ftr__bottom { display: flex; flex-wrap: wrap; gap: var(--s-md); justify-content: space-between; align-items: center; margin-top: var(--s-2xl); padding-top: var(--s-lg); border-top: 1px solid var(--c-line); font-size: .82rem; color: var(--c-muted); }
.ftr__bottom .demo-flag { font-family: var(--f-mono); font-size: .7rem; letter-spacing: .1em; color: var(--c-amber); border: 1px solid #ecd9af; background: var(--c-amber-wash); padding: .25rem .55rem; border-radius: 5px; }
.ftr__credit { display: inline-flex; align-items: center; gap: .55rem; font-size: .82rem; color: var(--c-muted); }
.ftr__credit a { display: inline; padding: 0; color: var(--c-accent-deep); font-weight: 600; }
.ftr__credit a:hover { color: var(--c-accent); text-decoration: underline; }

/* ---------- Cart drawer ---------- */
.scrim { position: fixed; inset: 0; background: rgba(11,31,42,.42); backdrop-filter: blur(2px); opacity: 0; visibility: hidden; transition: opacity .35s var(--ease), visibility .35s; z-index: 90; }
.scrim.is-open { opacity: 1; visibility: visible; }
.drawer {
  position: fixed; top: 0; right: 0; height: 100dvh; width: min(420px, 100vw);
  background: var(--c-surface); z-index: 100;
  display: flex; flex-direction: column;
  transform: translateX(100%); transition: transform .4s var(--ease);
  box-shadow: var(--shadow-lg);
}
.drawer.is-open { transform: translateX(0); }
.drawer__head { display: flex; align-items: center; justify-content: space-between; padding: var(--s-lg); border-bottom: 1px solid var(--c-line); }
.drawer__head h3 { font-family: var(--f-display); font-weight: 600; font-size: 1.2rem; }
.icon-btn { width: 38px; height: 38px; border-radius: 50%; display: grid; place-items: center; transition: background .2s; }
.icon-btn:hover { background: var(--c-line); }
.ship-bar { padding: var(--s-md) var(--s-lg); background: var(--c-accent-wash); font-size: .82rem; color: var(--c-accent-deep); }
.ship-bar__track { height: 6px; background: #c3e7e3; border-radius: 999px; margin-top: .5rem; overflow: hidden; }
.ship-bar__fill { height: 100%; background: var(--c-accent); width: 0; border-radius: 999px; transition: width .5s var(--ease); }
.drawer__items { flex: 1; overflow-y: auto; padding: var(--s-md) var(--s-lg); display: flex; flex-direction: column; gap: var(--s-md); }
.line {
  display: grid; grid-template-columns: 58px 1fr auto; gap: var(--s-md); align-items: center;
  padding-bottom: var(--s-md); border-bottom: 1px solid var(--c-line);
}
.line__viz { background: var(--c-surface-2); border: 1px solid var(--c-line); border-radius: var(--radius-sm); height: 58px; display: grid; place-items: center; }
.line__viz svg { height: 46px; }
.line__name { font-weight: 500; font-size: .92rem; line-height: 1.25; }
.line__sku { font-family: var(--f-mono); font-size: .66rem; color: var(--c-faint); margin-top: 2px; }
.qty { display: inline-flex; align-items: center; border: 1px solid var(--c-line-strong); border-radius: 999px; margin-top: .45rem; }
.qty button { width: 26px; height: 26px; display: grid; place-items: center; color: var(--c-ink-soft); font-size: 1rem; }
.qty button:hover { color: var(--c-accent-deep); }
.qty span { min-width: 26px; text-align: center; font-family: var(--f-mono); font-size: .82rem; }
.line__right { text-align: right; display: flex; flex-direction: column; align-items: flex-end; gap: .4rem; }
.line__price { font-family: var(--f-mono); font-weight: 600; font-size: .95rem; }
.line__rm { font-size: .72rem; color: var(--c-faint); text-decoration: underline; }
.line__rm:hover { color: var(--c-error); }
.drawer__empty { flex: 1; display: grid; place-content: center; text-align: center; gap: var(--s-md); color: var(--c-muted); padding: var(--s-xl); }
.drawer__empty svg { width: 54px; height: 54px; color: var(--c-line-strong); margin-inline: auto; }
.drawer__foot { border-top: 1px solid var(--c-line); padding: var(--s-lg); background: var(--c-surface-2); }
.drawer__total { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: var(--s-md); }
.drawer__total .l { color: var(--c-muted); font-size: .9rem; }
.drawer__total .v { font-family: var(--f-mono); font-weight: 600; font-size: 1.4rem; }
.fineprint { font-size: .74rem; color: var(--c-faint); text-align: center; margin-top: var(--s-sm); }

/* ---------- Checkout page ---------- */
.checkout { display: grid; grid-template-columns: 1.3fr .85fr; gap: var(--s-xl); align-items: start; }
.panel { background: var(--c-surface-2); border: 1px solid var(--c-line); border-radius: var(--radius); padding: clamp(1.4rem, 3vw, 2.2rem); }
.panel + .panel { margin-top: var(--s-lg); }
.panel h3 { font-family: var(--f-display); font-weight: 600; font-size: 1.2rem; margin-bottom: var(--s-md); display:flex; align-items:center; gap:.6rem; }
.panel h3 .num { width: 26px; height: 26px; font-size: .8rem; font-family: var(--f-mono); display: grid; place-items: center; background: var(--c-accent-wash); color: var(--c-accent-deep); border-radius: 6px; }
.field { margin-bottom: var(--s-md); }
.field label { display: block; font-size: .82rem; font-weight: 500; color: var(--c-ink-soft); margin-bottom: .35rem; }
.field input, .field select {
  width: 100%; font: inherit; font-size: .95rem;
  padding: .75rem .9rem; border: 1px solid var(--c-line-strong); border-radius: var(--radius-sm);
  background: var(--c-surface); color: var(--c-ink); transition: border-color .2s, box-shadow .2s;
}
.field input:focus, .field select:focus { outline: none; border-color: var(--c-accent); box-shadow: var(--ring); }
.field--row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s-md); }
.summary { position: sticky; top: 92px; }
.summary__items { display: flex; flex-direction: column; gap: var(--s-sm); margin-bottom: var(--s-md); padding-bottom: var(--s-md); border-bottom: 1px solid var(--c-line); }
.summary__line { display: grid; grid-template-columns: auto 1fr auto; gap: var(--s-sm); align-items: center; font-size: .9rem; }
.summary__line .q { font-family: var(--f-mono); font-size: .72rem; color: #fff; background: var(--c-ink-soft); border-radius: 5px; padding: .12rem .4rem; }
.summary__row { display: flex; justify-content: space-between; font-size: .92rem; color: var(--c-ink-soft); padding-block: .3rem; }
.summary__row.total { font-family: var(--f-display); font-weight: 600; font-size: 1.3rem; color: var(--c-ink); border-top: 1px solid var(--c-line); margin-top: var(--s-sm); padding-top: var(--s-md); }
.summary__row.total .v { font-family: var(--f-mono); }
.demo-banner { background: var(--c-amber-wash); border: 1px solid #ecd9af; border-radius: var(--radius-sm); padding: var(--s-md); font-size: .84rem; color: #6b5320; display: flex; gap: .6rem; align-items: flex-start; margin-bottom: var(--s-lg); }
.demo-banner svg { width: 20px; height: 20px; color: var(--c-amber); flex: none; }
.confirm { text-align: center; padding: var(--s-2xl) var(--s-lg); }
.confirm__check { width: 76px; height: 76px; border-radius: 50%; background: var(--c-accent-wash); color: var(--c-accent-deep); display: grid; place-items: center; margin: 0 auto var(--s-lg); }
.confirm__check svg { width: 38px; height: 38px; }
.confirm h2 { font-family: var(--f-display); font-weight: 600; font-size: clamp(1.6rem,4vw,2.3rem); letter-spacing: -.02em; }
.confirm .order-no { font-family: var(--f-mono); background: var(--c-surface); border: 1px solid var(--c-line); border-radius: 8px; display: inline-block; padding: .5rem 1rem; margin-top: var(--s-md); letter-spacing: .06em; }
.crumbs { font-family: var(--f-mono); font-size: .76rem; color: var(--c-muted); letter-spacing: .06em; padding-block: var(--s-lg) 0; }
.crumbs a:hover { color: var(--c-accent-deep); }

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* ---------- Toast ---------- */
.toast { position: fixed; bottom: var(--s-lg); left: 50%; transform: translateX(-50%) translateY(140%); background: var(--c-ink); color: #fff; padding: .8rem 1.3rem; border-radius: 999px; font-size: .88rem; z-index: 120; box-shadow: var(--shadow-lg); display: flex; align-items: center; gap: .5rem; transition: transform .4s var(--ease); }
.toast.show { transform: translateX(-50%) translateY(0); }
.toast svg { width: 18px; height: 18px; color: var(--c-accent); }

/* ---------- Responsive ---------- */
@media (max-width: 920px) {
  .hero__grid { grid-template-columns: 1fr; }
  .hero__viz { min-height: 320px; order: -1; }
  .coa-layout { grid-template-columns: 1fr; }
  .checkout { grid-template-columns: 1fr; }
  .summary { position: static; }
  .ftr__grid { grid-template-columns: 1fr 1fr; gap: var(--s-lg); }
  .steps { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .nav { display: none; }
  .nav.is-open { display: flex; position: absolute; top: 68px; left: 0; right: 0; flex-direction: column; background: var(--c-surface-2); padding: var(--s-md) var(--s-lg); border-bottom: 1px solid var(--c-line); gap: 0; box-shadow: var(--shadow-md); }
  .nav.is-open a { padding-block: .8rem; border-bottom: 1px solid var(--c-line); }
  .menu-toggle { display: grid; place-items: center; width: 40px; height: 40px; }
  .hero__stats { flex-wrap: wrap; gap: var(--s-lg); }
  .ftr__grid { grid-template-columns: 1fr; }
  .hdr__actions .label-hide { display: none; }
}