/* ==========================================================================
   KasirONE Landing Page — main.css
   Phase 5: Sonnet design-handoff integration.
   Mobile-first. No frameworks. Zero-network (system font stack, no remote
   assets). Palette tokens derived from the Sonnet handoff design system,
   which derives from the official KasirONE logo.

   Accessibility notes:
   - --ko-ink-soft / --ko-ink-muted are darkened vs. the handoff values to
     keep >= 4.5:1 contrast on cream/white for body-size text.
   - Large light timeline numerals are decorative (aria-hidden in HTML).
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Design tokens (Sonnet handoff palette)
   -------------------------------------------------------------------------- */
:root {
  /* Brand colors */
  --ko-ink: #123a4d;            /* deep teal — primary text, dark section */
  --ko-ink-soft: #556e7a;       /* secondary text (5.0:1 on cream) */
  --ko-ink-muted: #5e7580;      /* captions/labels (4.5:1 on cream) */
  --ko-teal: #0f7c8a;           /* primary action */
  --ko-teal-dark: #0b5b66;      /* hover / pressed, text on aqua-soft */
  --ko-aqua: #35bcc7;           /* wave / accent */
  --ko-aqua-soft: #e4f6f8;      /* badges, icon tiles, brand section */
  --ko-coral: #e8523a;          /* "ONE" accent — use sparingly (icons) */
  --ko-coral-soft: #fdede9;     /* icon tile background */
  --ko-coral-deep: #9c2e1b;     /* coral text (AA on coral-soft/white) */
  --ko-gold: #f2a93b;           /* identity accent */
  --ko-gold-soft: #fcf0dc;      /* icon tile background */
  --ko-gold-deep: #8a5a10;      /* gold text (AA on gold-soft) */
  --ko-green: #2f6b39;          /* success / check icons */
  --ko-green-soft: #e7f3e7;
  --ko-cream: #fdf7ef;          /* page background */
  --ko-cream-deep: #f7f1e7;     /* alternate section background */
  --ko-cream-cta: #fcf6ec;      /* final CTA background */
  --ko-surface: #ffffff;        /* cards */
  --ko-line: #ede2d2;           /* soft border */
  --ko-line-strong: #e4d9c8;    /* secondary buttons, dashed dividers */

  /* Radii */
  --ko-r-sm: 11px;
  --ko-r-md: 14px;
  --ko-r-lg: 20px;
  --ko-r-xl: 24px;
  --ko-r-pill: 999px;

  /* Typography — zero-network system stack (Plus Jakarta Sans approximation) */
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue",
    Arial, sans-serif;
  --text-sm: 0.9375rem;   /* 15px */
  --text-md: 1rem;        /* 16px */
  --text-h3: 1.1875rem;   /* 19px */
  --text-h1: clamp(2.25rem, 5.2vw, 3.875rem);    /* 36–62px */
  --text-h2: clamp(1.75rem, 3.6vw, 2.75rem);     /* 28–44px */
  --text-lead: clamp(1rem, 1.6vw, 1.125rem);     /* 16–18px */
  --leading-body: 1.75;
  --leading-heading: 1.18;

  /* Layout */
  --container-max: 75rem;   /* 1200px */
  --container-pad: clamp(1.25rem, 5vw, 2.5rem);
  --section-pad: clamp(3.5rem, 8vw, 6.25rem);

  /* Shadows — restrained, used only where useful */
  --shadow-cta: 0 10px 22px rgba(15, 124, 138, 0.22);
  --shadow-float: 0 18px 40px rgba(18, 58, 77, 0.14);
  --shadow-mockup: 0 24px 60px rgba(18, 58, 77, 0.1);
}

/* --------------------------------------------------------------------------
   2. Reset / base
   -------------------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--text-md);
  line-height: var(--leading-body);
  color: var(--ko-ink);
  background-color: var(--ko-cream);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

::selection {
  background: #fbddd6;
  color: var(--ko-ink);
}

h1, h2, h3 {
  line-height: var(--leading-heading);
  color: var(--ko-ink);
  margin: 0 0 var(--space-4, 1rem);
  text-wrap: balance;
}

h1 {
  font-size: var(--text-h1);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.025em;
  margin-bottom: 0;
}

h2 {
  font-size: var(--text-h2);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 0;
}

h3 {
  font-size: var(--text-h3);
  font-weight: 800;
}

p {
  margin: 0 0 1rem;
}

.section-intro {
  font-size: var(--text-lead);
  color: var(--ko-ink-soft);
  max-width: 46rem;
  text-wrap: pretty;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* --------------------------------------------------------------------------
   3. Primitives
   -------------------------------------------------------------------------- */
.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.section {
  padding-block: var(--section-pad);
}

.section--surface {
  background-color: var(--ko-surface);
}

.section--deep {
  background-color: var(--ko-cream-deep);
}

.section--aqua {
  background-color: var(--ko-aqua-soft);
}

.section--dark {
  background-color: var(--ko-ink);
  color: #eaf4f6;
}

.section--dark h2 {
  color: #ffffff;
}

.section--dark .section-intro {
  color: #b7d2d9;
}

.eyebrow {
  display: inline-block;
  margin: 0 0 1rem;
  padding: 0.5rem 1rem;
  border-radius: var(--ko-r-pill);
  background-color: var(--ko-aqua-soft);
  color: var(--ko-teal-dark);
  font-size: 0.78125rem;  /* 12.5px */
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.eyebrow--plain {
  padding: 0;
  background: none;
  color: var(--ko-teal-dark);
}

a {
  color: var(--ko-teal-dark);
  text-decoration: none;
}

a:hover {
  color: var(--ko-teal);
}

:focus-visible {
  outline: 3px solid var(--ko-teal);
  outline-offset: 2px;
  border-radius: 6px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 44px;
  padding: 0.875rem 1.75rem;
  border-radius: var(--ko-r-md);
  border: 1px solid transparent;
  font-size: var(--text-md);
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
}

.btn--primary {
  background-color: var(--ko-teal);
  color: #ffffff;
  box-shadow: var(--shadow-cta);
}

.btn--primary:hover {
  background-color: var(--ko-teal-dark);
  color: #ffffff;
}

.btn--secondary {
  background-color: var(--ko-surface);
  color: var(--ko-ink);
  border-color: var(--ko-line-strong);
}

.btn--secondary:hover {
  border-color: var(--ko-teal);
  color: var(--ko-teal-dark);
}

.btn--sm {
  min-height: 44px;
  padding: 0.625rem 1rem;
  font-size: 0.90625rem;
  box-shadow: 0 6px 14px rgba(15, 124, 138, 0.2);
}

/* Note boxes — calm clarifications */
.note-box {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-top: 1.25rem;
  padding: 1rem 1.125rem;
  background-color: var(--ko-surface);
  border: 1px solid var(--ko-line);
  border-left: 3px solid var(--ko-teal);
  border-radius: var(--ko-r-sm);
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--ko-ink);
}

.note-box--attention {
  border-left-color: var(--ko-coral);
}

.note-box__icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  margin-top: 2px;
  color: var(--ko-teal);
}

.note-box--attention .note-box__icon {
  color: var(--ko-coral);
}

.note-box h3 {
  font-size: var(--text-md);
  margin: 0 0 0.25rem;
}

.note-box p {
  margin: 0;
}

.note-box--stack {
  display: block;
}

.note-box--stack p + p {
  margin-top: 0.5rem;
}

/* Lists */
.plain-list {
  max-width: 46rem;
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
}

.plain-list li {
  position: relative;
  padding-left: 2rem;
  margin-bottom: 0.75rem;
}

.plain-list li::before {
  content: "\2014"; /* — */
  position: absolute;
  left: 0;
  color: var(--ko-teal);
  font-weight: 700;
}

.plain-list--check li::before {
  content: "\2713"; /* ✓ */
  color: var(--ko-green);
}

.section-note {
  font-size: var(--text-sm);
  color: var(--ko-ink-muted);
  margin-top: 1rem;
}

/* --------------------------------------------------------------------------
   4. Skip link
   -------------------------------------------------------------------------- */
.skip-link {
  position: absolute;
  left: 1rem;
  top: -100%;
  z-index: 100;
  padding: 0.5rem 1rem;
  background-color: var(--ko-ink);
  color: #ffffff;
  border-radius: var(--ko-r-sm);
  text-decoration: none;
}

.skip-link:focus {
  top: 0.5rem;
  color: #ffffff;
}

/* --------------------------------------------------------------------------
   5. Header / navigation
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: rgba(253, 247, 239, 0.96);
  border-bottom: 1px solid var(--ko-line);
}

.site-header__inner {
  display: flex;
  align-items: center;
  gap: clamp(0.75rem, 3vw, 2rem);
  min-height: 74px;
}

.site-header__brand {
  flex: none;
  display: inline-flex;
  border-radius: var(--ko-r-sm);
}

.site-header__logo {
  height: 42px;
  width: auto;
  mix-blend-mode: multiply; /* lockup asset has a white background */
}

.site-nav {
  display: flex;
  flex: 1 1 auto;
  align-items: center;
  justify-content: flex-end;
  gap: clamp(0.875rem, 2vw, 1.75rem);
  min-width: 0;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(0.875rem, 2vw, 1.75rem);
  margin: 0;
  padding: 0;
  list-style: none;
  white-space: nowrap;
}

.site-nav__link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--ko-ink);
}

.site-nav__link:hover {
  color: var(--ko-teal);
}

.site-nav__cta {
  flex: none;
  white-space: nowrap;
}

/* Mobile menu button */
.menu-btn {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  flex: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: 12px;
  background-color: var(--ko-surface);
  border: 1px solid var(--ko-line-strong);
  color: var(--ko-ink);
  cursor: pointer;
}

.menu-btn__bar {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background-color: var(--ko-ink);
}

.menu-btn[aria-expanded="true"] {
  background-color: var(--ko-aqua-soft);
  border-color: var(--ko-aqua);
}

/* Mobile navigation panel */
.nav-panel {
  border-top: 1px solid var(--ko-line);
  background-color: var(--ko-cream);
  padding: 0.5rem var(--container-pad) 1.125rem;
}

.nav-panel[hidden] {
  display: none;
}

.nav-panel__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-panel__list a {
  display: block;
  padding: 0.8125rem 0.125rem;
  min-height: 44px;
  font-size: var(--text-md);
  font-weight: 700;
  color: var(--ko-ink);
  border-bottom: 1px solid #f1e7d8;
}

.nav-panel__list li:last-child a {
  border-bottom: none;
}

.nav-panel__list a:hover {
  color: var(--ko-teal);
}

.nav-panel .btn {
  margin-top: 0.75rem;
  width: 100%;
}

/* Desktop nav vs. mobile menu */
@media (max-width: 860px) {
  .site-nav {
    display: none;
  }

  .menu-btn {
    display: flex;
    margin-left: auto;
  }
}

@media (min-width: 861px) {
  .nav-panel {
    display: none;
  }
}

/* --------------------------------------------------------------------------
   6. Hero
   -------------------------------------------------------------------------- */
.hero {
  padding-block: clamp(2.5rem, 6vw, 4.75rem) clamp(1.25rem, 4vw, 2.5rem);
}

.hero__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(320px, 100%), 1fr));
  gap: clamp(2.25rem, 5vw, 4rem);
  align-items: center;
}

.hero__lead {
  margin: 1.375rem 0 0;
  max-width: 32.5rem;
  font-size: var(--text-lead);
  line-height: 1.75;
  color: var(--ko-ink-soft);
  text-wrap: pretty;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.875rem;
  margin-top: 2rem;
}

.hero__trust {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 1.625rem 0 0;
  max-width: 28.75rem;
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--ko-ink-muted);
}

.hero__trust-icon {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  color: var(--ko-teal);
}

.hero__audience {
  margin: 1.625rem 0 0;
  max-width: 28.75rem;
  font-size: 0.90625rem;
  line-height: 1.7;
  color: var(--ko-ink-muted);
}

/* Hero visual: mascot + floating cart preview (decorative illustration) */
.hero__visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: flex-end;
  padding: 3.5rem 0 1.25rem;
}

.hero__mascot {
  width: min(80%, 400px);
  height: auto;
  mix-blend-mode: multiply; /* asset has a white background */
}

.cart-card {
  position: absolute;
  right: 0;
  top: 0;
  width: min(56%, 224px);
  background-color: var(--ko-surface);
  border: 1px solid var(--ko-line);
  border-radius: 18px;
  box-shadow: var(--shadow-float);
  padding: 0.875rem;
  font-size: 0.78125rem;
}

.cart-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.625rem;
}

.cart-card__title {
  font-weight: 800;
  font-size: 0.8125rem;
  color: var(--ko-ink);
}

.cart-card__badge {
  background-color: var(--ko-aqua-soft);
  color: var(--ko-teal-dark);
  border-radius: var(--ko-r-pill);
  padding: 0.1875rem 0.5625rem;
  font-weight: 700;
  font-size: 0.6875rem;
}

.cart-card__row {
  display: flex;
  justify-content: space-between;
  gap: 0.625rem;
  color: var(--ko-ink-soft);
}

.cart-card__row + .cart-card__row {
  margin-top: 0.5rem;
}

.cart-card__row strong {
  color: var(--ko-ink);
  font-weight: 600;
}

.cart-card__total {
  margin-top: 0.75rem;
  padding-top: 0.625rem;
  border-top: 1px dashed var(--ko-line-strong);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-weight: 700;
  color: var(--ko-ink);
}

.cart-card__total strong {
  font-weight: 800;
  font-size: var(--text-md);
}

.cart-card__pay {
  margin-top: 0.75rem;
  background-color: var(--ko-teal);
  color: #ffffff;
  border-radius: var(--ko-r-sm);
  padding: 0.6875rem;
  text-align: center;
  font-weight: 700;
  font-size: 0.8125rem;
}

/* --------------------------------------------------------------------------
   7. Feature cards
   -------------------------------------------------------------------------- */
.features__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
  gap: clamp(1rem, 2vw, 1.5rem);
  margin-top: clamp(2rem, 4vw, 3.25rem);
  padding: 0;
  list-style: none;
}

.feature {
  height: 100%;
  background-color: var(--ko-surface);
  border: 1px solid var(--ko-line);
  border-radius: var(--ko-r-lg);
  padding: 1.75rem;
}

.feature:hover {
  border-color: #b9dee3;
  box-shadow: 0 12px 28px rgba(18, 58, 77, 0.07);
}

.feature__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: var(--ko-r-md);
  background-color: var(--ko-aqua-soft);
  color: var(--ko-teal);
}

.feature__icon--coral {
  background-color: var(--ko-coral-soft);
  color: var(--ko-coral);
}

.feature__icon--gold {
  background-color: var(--ko-gold-soft);
  color: var(--ko-gold-deep);
}

.feature__icon svg {
  width: 22px;
  height: 22px;
}

.feature h3 {
  margin: 1.125rem 0 0.5rem;
}

.feature p {
  margin: 0;
  font-size: 0.96875rem;  /* 15.5px */
  line-height: 1.7;
  color: var(--ko-ink-soft);
}

/* --------------------------------------------------------------------------
   8. Product UI mockup (illustrative interface)
   -------------------------------------------------------------------------- */
.mockup-head {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr));
  gap: clamp(1.5rem, 4vw, 3.5rem);
  align-items: end;
}

.mockup-head p {
  margin: 0;
  max-width: 32.5rem;
  font-size: var(--text-lead);
  line-height: 1.75;
  color: var(--ko-ink-soft);
}

.mockup {
  margin-top: clamp(2rem, 4vw, 3.25rem);
  background-color: var(--ko-surface);
  border: 1px solid #e7dccb;
  border-radius: var(--ko-r-xl);
  box-shadow: var(--shadow-mockup);
  overflow: hidden;
}

.mockup__bar {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  padding: 0.875rem 1.125rem;
  border-bottom: 1px solid #efe6d8;
  background-color: #fcf8f2;
}

.mockup__logo {
  height: 24px;
  width: auto;
  mix-blend-mode: multiply;
}

.mockup__tabs {
  display: flex;
  gap: 0.375rem;
  flex-wrap: wrap;
}

.mockup__tab {
  border-radius: 9px;
  padding: 0.4375rem 0.875rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--ko-ink-soft);
}

.mockup__tab--active {
  background-color: var(--ko-teal);
  color: #ffffff;
  font-weight: 700;
}

.mockup__store {
  margin-left: auto;
  font-size: 0.78125rem;
  font-weight: 600;
  color: var(--ko-ink-muted);
}

.mockup__body {
  display: grid;
  grid-template-columns: 1fr;
}

.mockup__products {
  padding: clamp(1.125rem, 2.4vw, 1.625rem);
}

.mockup__cart {
  padding: clamp(1.125rem, 2.4vw, 1.625rem);
  background-color: #fcfaf6;
}

@media (min-width: 760px) {
  .mockup__body {
    grid-template-columns: 1.45fr 1fr;
  }

  .mockup__products {
    border-right: 1px solid #f1e9dc;
  }
}

.mockup__cats {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1.125rem;
}

.mockup__cat {
  border-radius: var(--ko-r-pill);
  padding: 0.4375rem 0.9375rem;
  font-size: 0.78125rem;
  font-weight: 600;
  background-color: #f4eee4;
  color: var(--ko-ink-soft);
}

.mockup__cat--active {
  background-color: var(--ko-ink);
  color: #ffffff;
  font-weight: 700;
}

.mockup__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 0.75rem;
}

.mockup-product {
  border: 1px solid var(--ko-line);
  border-radius: var(--ko-r-md);
  padding: 0.875rem;
  background-color: var(--ko-surface);
}

.mockup-product__thumb {
  height: 52px;
  border-radius: 10px;
  background-color: var(--ko-aqua-soft);
}

.mockup-product__thumb--coral { background-color: var(--ko-coral-soft); }
.mockup-product__thumb--gold { background-color: var(--ko-gold-soft); }
.mockup-product__thumb--green { background-color: #eaf3e9; }
.mockup-product__thumb--purple { background-color: #f1eaf7; }
.mockup-product__thumb--blue { background-color: #e9f1f5; }

.mockup-product__name {
  margin-top: 0.625rem;
  font-size: 0.84375rem;
  font-weight: 700;
  color: var(--ko-ink);
}

.mockup-product__price {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--ko-teal);
}

.mockup-product__stock {
  font-size: 0.71875rem;
  color: var(--ko-ink-muted);
  margin-top: 0.125rem;
}

.mockup-cart__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.mockup-cart__title {
  font-size: var(--text-md);
  font-weight: 800;
  color: var(--ko-ink);
}

.mockup-cart__badge {
  font-size: 0.78125rem;
  font-weight: 700;
  color: var(--ko-teal-dark);
  background-color: var(--ko-aqua-soft);
  border-radius: var(--ko-r-pill);
  padding: 0.25rem 0.625rem;
}

.mockup-cart__items {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  margin-top: 0.875rem;
}

.mockup-cart__item {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  background-color: var(--ko-surface);
  border: 1px solid var(--ko-line);
  border-radius: 12px;
  padding: 0.6875rem 0.8125rem;
}

.mockup-cart__item-name {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--ko-ink);
}

.mockup-cart__item-qty {
  font-size: 0.78125rem;
  color: var(--ko-ink-muted);
}

.mockup-cart__item-price {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--ko-ink);
}

.mockup-cart__totals {
  margin-top: 0.875rem;
  padding-top: 0.875rem;
  border-top: 1px dashed var(--ko-line-strong);
  display: flex;
  flex-direction: column;
  gap: 0.4375rem;
}

.mockup-cart__row {
  display: flex;
  justify-content: space-between;
  font-size: 0.875rem;
  color: var(--ko-ink-soft);
}

.mockup-cart__row span:last-child {
  color: var(--ko-ink);
  font-weight: 600;
}

.mockup-cart__row--total {
  align-items: baseline;
}

.mockup-cart__row--total span:first-child {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--ko-ink);
}

.mockup-cart__row--total span:last-child {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.mockup-cart__paylabel {
  font-size: 0.78125rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--ko-ink-muted);
  margin: 1rem 0 0.5rem;
  text-transform: uppercase;
}

.mockup-cart__methods {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
}

.mockup-cart__method {
  border: 1px solid var(--ko-line);
  background-color: var(--ko-surface);
  border-radius: var(--ko-r-sm);
  padding: 0.625rem;
  text-align: center;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--ko-ink-soft);
}

.mockup-cart__method--active {
  border: 1.5px solid var(--ko-teal);
  background-color: var(--ko-aqua-soft);
  color: var(--ko-teal-dark);
  font-weight: 700;
}

.mockup-cart__bayar {
  margin-top: 0.875rem;
  background-color: var(--ko-teal);
  color: #ffffff;
  border-radius: 13px;
  padding: 0.9375rem;
  text-align: center;
  font-size: var(--text-md);
  font-weight: 700;
}

.mockup-caption {
  margin: 1rem 0 0;
  text-align: center;
  font-size: var(--text-sm);
  color: var(--ko-ink-muted);
}

/* --------------------------------------------------------------------------
   9. How it works — numbered timeline
   -------------------------------------------------------------------------- */
.steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.25rem, 2.4vw, 1.75rem);
  margin: clamp(2rem, 4vw, 3.25rem) 0 0;
  padding: 0;
  list-style: none;
  counter-reset: langkah;
}

.step {
  border-top: 2px solid var(--ko-teal);
  padding-top: 1.25rem;
}

.step:nth-child(2) { border-top-color: var(--ko-aqua); }
.step:nth-child(3) { border-top-color: var(--ko-gold); }
.step:nth-child(4) { border-top-color: var(--ko-coral); }
.step:nth-child(5) { border-top-color: var(--ko-ink); }

.step__number {
  display: block;
  font-size: clamp(2.375rem, 4.4vw, 3.375rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
  color: #cfe7ea;
}

.step:nth-child(3) .step__number { color: #f6dfb8; }
.step:nth-child(4) .step__number { color: #f7cfc6; }
.step:nth-child(5) .step__number { color: #c7d4da; }

.step h3 {
  margin: 0.75rem 0 0.5rem;
}

.step p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--ko-ink-soft);
}

@media (min-width: 640px) {
  .steps {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  .steps {
    grid-template-columns: repeat(5, 1fr);
  }
}

/* --------------------------------------------------------------------------
   10. Dark local-first section
   -------------------------------------------------------------------------- */
.local__head {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr));
  gap: clamp(1.5rem, 4vw, 3.5rem);
  align-items: start;
}

.local__head .eyebrow {
  background-color: rgba(53, 188, 199, 0.18);
  color: #7fe0e9;
}

.local__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(260px, 100%), 1fr));
  gap: clamp(1rem, 2vw, 1.5rem);
  margin-top: clamp(2rem, 4vw, 3.25rem);
  padding: 0;
  list-style: none;
}

.local__card {
  height: 100%;
  background-color: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(183, 210, 217, 0.22);
  border-radius: var(--ko-r-lg);
  padding: 1.75rem;
}

.local__label {
  font-size: 0.78125rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: #7fe0e9;
  text-transform: uppercase;
}

.local__card p {
  margin: 0.875rem 0 0;
  font-size: 0.96875rem;
  line-height: 1.75;
  color: #dceaee;
}

.local__notes {
  margin-top: 1.75rem;
  background-color: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(183, 210, 217, 0.22);
  border-left: 3px solid var(--ko-aqua);
  border-radius: var(--ko-r-sm);
  padding: 1rem 1.125rem;
  font-size: var(--text-sm);
  line-height: 1.7;
  color: #dceaee;
}

.local__notes p {
  margin: 0;
}

.local__notes p + p {
  margin-top: 0.5rem;
}

/* --------------------------------------------------------------------------
   11. Backup & Restore
   -------------------------------------------------------------------------- */
.duo-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1rem, 2vw, 1.5rem);
  margin-top: 1.5rem;
}

@media (min-width: 640px) {
  .duo-grid {
    grid-template-columns: repeat(2, 1fr);
    max-width: 46rem;
  }
}

.backup-reminder {
  margin-top: 1.5rem;
  font-weight: 600;
  color: var(--ko-ink);
}

.migrate {
  margin-top: clamp(2.5rem, 5vw, 4rem);
  padding-top: clamp(1.5rem, 3vw, 2.25rem);
  border-top: 1px solid var(--ko-line);
}

.migrate h3 {
  font-size: clamp(1.375rem, 2.6vw, 1.75rem);
  font-weight: 800;
  letter-spacing: -0.015em;
}

/* Flow diagrams (vertical mobile / horizontal desktop) */
.flow {
  display: grid;
  gap: 2rem;
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
}

.flow__item {
  position: relative;
}

.flow__card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  height: 100%;
  padding: 1rem;
  background-color: var(--ko-surface);
  border: 1px solid var(--ko-line);
  border-radius: var(--ko-r-sm);
  font-weight: 600;
  font-size: var(--text-sm);
  color: var(--ko-ink);
  text-align: center;
}

.flow__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background-color: var(--ko-ink);
  color: #ffffff;
  font-size: var(--text-sm);
  font-weight: 700;
}

.flow__item:not(:last-child)::after {
  content: "\2193"; /* ↓ */
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translate(-50%, 55%);
  color: var(--ko-teal);
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1;
}

@media (min-width: 640px) {
  .flow--3 {
    grid-template-columns: repeat(3, 1fr);
  }

  .flow--3 .flow__item:not(:last-child)::after {
    content: "\2192"; /* → */
    left: auto;
    right: 0;
    top: 50%;
    bottom: auto;
    transform: translate(55%, -50%);
  }
}

@media (min-width: 900px) {
  .flow--5 {
    grid-template-columns: repeat(5, 1fr);
  }

  .flow--5 .flow__item:not(:last-child)::after {
    content: "\2192";
    left: auto;
    right: 0;
    top: 50%;
    bottom: auto;
    transform: translate(55%, -50%);
  }
}

/* --------------------------------------------------------------------------
   12. Payment / receipt / WhatsApp
   -------------------------------------------------------------------------- */
.pay__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1rem, 2vw, 1.5rem);
  align-items: stretch;
  margin-top: clamp(2rem, 4vw, 3.25rem);
}

@media (min-width: 900px) {
  .pay__grid {
    grid-template-columns: 1.15fr 1fr;
  }
}

.pay__cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(130px, 100%), 1fr));
  gap: 0.875rem;
}

.pay-card {
  background-color: var(--ko-surface);
  border: 1px solid var(--ko-line);
  border-radius: 18px;
  padding: 1.375rem;
}

.pay-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background-color: var(--ko-green-soft);
  color: var(--ko-green);
}

.pay-card__icon--aqua {
  background-color: var(--ko-aqua-soft);
  color: var(--ko-teal);
}

.pay-card__icon--coral {
  background-color: var(--ko-coral-soft);
  color: var(--ko-coral);
}

.pay-card__icon svg {
  width: 20px;
  height: 20px;
}

.pay-card__label {
  margin-top: 0.875rem;
  font-size: 0.78125rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: var(--ko-ink);
}

.pay-card p {
  margin: 0.375rem 0 0;
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--ko-ink-soft);
}

.pay__main {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
  min-width: 0;
}

/* Capability strip — full width below the three payment cards on mobile;
   compact wrapping row on wider screens. */
.pay__caps {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  margin: 0;
  padding: 1.125rem 1.375rem;
  background-color: var(--ko-surface);
  border: 1px solid var(--ko-line);
  border-radius: 18px;
}

@media (min-width: 640px) {
  .pay__caps {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem 1.75rem;
  }
}

.pay__cap {
  display: flex;
  align-items: center;
  gap: 0.5625rem;
  font-size: 0.90625rem;
  font-weight: 700;
  color: var(--ko-ink);
}

.pay__cap-check {
  flex: none;
  width: 16px;
  height: 16px;
  color: var(--ko-green);
}

/* Receipt preview (illustrative) */
.receipt-panel {
  background-color: var(--ko-cream-deep);
  border: 1px solid var(--ko-line);
  border-radius: 22px;
  padding: clamp(1.5rem, 3vw, 2.125rem);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.125rem;
}

.receipt-panel__head {
  align-self: stretch;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.78125rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: var(--ko-ink-muted);
  text-transform: uppercase;
}

.receipt-panel__head span:last-child {
  color: var(--ko-teal);
}

.receipt {
  width: min(100%, 250px);
  background-color: var(--ko-surface);
  border: 1px solid var(--ko-line);
  border-radius: 10px;
  padding: 1.25rem 1.125rem;
  font-size: 0.78125rem;
  color: var(--ko-ink-soft);
  box-shadow: 0 10px 26px rgba(18, 58, 77, 0.08);
}

.receipt__store {
  text-align: center;
  font-size: 0.9375rem;
  font-weight: 800;
  color: var(--ko-ink);
}

.receipt__addr {
  text-align: center;
  margin-top: 0.1875rem;
  font-size: 0.71875rem;
}

.receipt hr {
  border: none;
  border-top: 1px dashed #d8cdbb;
  margin: 0.875rem 0;
}

.receipt__row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.375rem;
}

.receipt__row:last-child {
  margin-bottom: 0;
}

.receipt__row span:last-child {
  color: var(--ko-ink);
}

.receipt__row--total {
  font-weight: 800;
  color: var(--ko-ink);
  font-size: 0.875rem;
}

.receipt__thanks {
  text-align: center;
  font-size: 0.71875rem;
}

.receipt-panel__actions {
  display: flex;
  gap: 0.625rem;
  flex-wrap: wrap;
  justify-content: center;
}

.receipt-panel__actions span {
  background-color: var(--ko-surface);
  border: 1px solid var(--ko-line-strong);
  border-radius: var(--ko-r-sm);
  padding: 0.625rem 1rem;
  font-size: 0.84375rem;
  font-weight: 700;
  color: var(--ko-ink);
}

.receipt-panel__actions span:last-child {
  background-color: var(--ko-teal);
  border-color: var(--ko-teal);
  color: #ffffff;
}

/* Receipt paths (cetak / WhatsApp) */
.path-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1rem, 2vw, 1.5rem);
  margin-top: 1.5rem;
}

@media (min-width: 768px) {
  .path-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.path-card {
  height: 100%;
  padding: 1.5rem;
  background-color: var(--ko-surface);
  border: 1px solid var(--ko-line);
  border-radius: var(--ko-r-lg);
}

.path-card h3 {
  font-size: 0.875rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 0.875rem;
}

.mini-flow {
  display: grid;
  gap: 1.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.mini-flow li {
  position: relative;
  padding: 0.5rem 0.75rem;
  background-color: var(--ko-cream);
  border: 1px solid var(--ko-line);
  border-radius: calc(var(--ko-r-sm) - 3px);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--ko-ink);
  text-align: center;
}

.mini-flow li:not(:last-child)::after {
  content: "\2193";
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translate(-50%, 50%);
  color: var(--ko-teal);
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1;
}

/* Receipt customization */
.customize {
  margin-top: clamp(2.5rem, 5vw, 4rem);
  padding-top: clamp(1.5rem, 3vw, 2.25rem);
  border-top: 1px solid var(--ko-line);
}

.customize__title {
  font-size: clamp(1.375rem, 2.6vw, 1.75rem);
  letter-spacing: -0.015em;
}

.customize__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1rem, 2vw, 1.5rem);
}

@media (min-width: 900px) {
  .customize__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.customize-group {
  height: 100%;
  padding: 1.25rem;
  background-color: var(--ko-cream);
  border: 1px solid var(--ko-line);
  border-radius: var(--ko-r-lg);
}

.customize-group__title {
  margin: 0 0 0.5rem;
  font-weight: 800;
  color: var(--ko-ink);
}

.customize-group ul {
  margin: 0;
  padding-left: 1.1rem;
  font-size: var(--text-sm);
  color: var(--ko-ink-soft);
}

.customize-group li {
  margin-bottom: 0.25rem;
}

/* --------------------------------------------------------------------------
   13. KasirONE Cloud (coming soon)
   -------------------------------------------------------------------------- */
.badge-soon {
  display: inline-flex;
  align-items: center;
  padding: 0.3125rem 0.875rem;
  margin: 0 0 1rem;
  border-radius: var(--ko-r-pill);
  background-color: var(--ko-coral-soft);
  color: var(--ko-coral-deep);
  font-size: 0.78125rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.cloud__title-cap {
  margin: 1.5rem 0 0;
  font-weight: 700;
  color: var(--ko-ink);
}

.section--aqua .note-box {
  background-color: var(--ko-surface);
}

.section--aqua .customize-group,
.section--aqua .flow__card {
  background-color: var(--ko-surface);
}

/* --------------------------------------------------------------------------
   14. Target users chips
   -------------------------------------------------------------------------- */
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: clamp(1.75rem, 3.5vw, 2.75rem) 0 0;
  padding: 0;
  list-style: none;
}

.chips li {
  background-color: var(--ko-surface);
  border: 1px solid var(--ko-line);
  border-radius: var(--ko-r-pill);
  padding: 0.875rem 1.5rem;
  font-size: var(--text-md);
  font-weight: 700;
  color: var(--ko-ink);
}

.chips li:hover {
  border-color: var(--ko-teal);
  color: var(--ko-teal-dark);
}

/* --------------------------------------------------------------------------
   15. Brand moment
   -------------------------------------------------------------------------- */
.brand-moment__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
  gap: clamp(1.75rem, 4vw, 3.75rem);
  align-items: center;
}

.brand-moment__visual {
  display: flex;
  justify-content: center;
}

.brand-moment__img {
  width: min(90%, 380px);
  height: auto;
  mix-blend-mode: multiply;
}

.brand-moment h2 {
  color: var(--ko-teal-dark);
  font-size: clamp(2rem, 4.2vw, 3.25rem);
  line-height: 1.1;
  letter-spacing: -0.025em;
}

.brand-moment p {
  margin: 1.375rem 0 0;
  max-width: 28.75rem;
  font-size: var(--text-lead);
  line-height: 1.8;
  color: #3c6670;
}

.brand-moment .motto {
  margin: 0.75rem 0 0;
  font-weight: 700;
  color: var(--ko-teal-dark);
}

/* --------------------------------------------------------------------------
   16. FAQ — native details/summary (zero JS)
   -------------------------------------------------------------------------- */
.faq-list {
  max-width: 55rem;
  margin-top: clamp(1.25rem, 3vw, 2rem);
  border-top: 1px solid #e9dfd1;
}

.faq-item {
  border-bottom: 1px solid #e9dfd1;
  background-color: transparent;
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 44px;
  padding: 1.375rem 0.125rem;
  font-size: clamp(1rem, 1.7vw, 1.125rem);
  font-weight: 700;
  color: var(--ko-ink);
  cursor: pointer;
  list-style: none;
  transition: color 0.15s ease;
}

.faq-item summary:hover {
  color: var(--ko-teal);
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  flex: none;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background-color: var(--ko-aqua-soft);
  color: var(--ko-teal);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.0625rem;
  font-weight: 800;
  line-height: 1;
}

.faq-item[open] summary::after {
  content: "\2212"; /* − */
}

.faq-item p {
  margin: 0;
  padding: 0 2.5rem 1.375rem 0.125rem;
  font-size: var(--text-md);
  line-height: 1.75;
  color: var(--ko-ink-soft);
  max-width: 42.5rem;
}

/* --------------------------------------------------------------------------
   17. Final CTA
   -------------------------------------------------------------------------- */
.cta-band {
  background-color: var(--ko-cream-cta);
  position: relative;
  overflow: hidden;
  padding-bottom: 0;
}

.cta-band__inner {
  max-width: 51.25rem;
  text-align: center;
  position: relative;
  z-index: 2;
}

.cta-band h2 {
  font-size: clamp(2rem, 4.4vw, 3.375rem);
  line-height: 1.12;
  letter-spacing: -0.025em;
}

.cta-band__lead {
  margin: 1.25rem auto 0;
  max-width: 32.5rem;
  font-size: var(--text-lead);
  color: var(--ko-ink-soft);
}

.cta-band__actions {
  margin-top: 2rem;
  display: flex;
  justify-content: center;
}

.cta-band__lockup {
  height: 46px;
  width: auto;
  margin: 2.125rem auto 0;
  mix-blend-mode: multiply;
}

.cta-band__wave {
  display: block;
  width: 100%;
  height: clamp(3.5rem, 7vw, 6.875rem);
  margin-top: clamp(1.75rem, 4vw, 3rem);
}

.cta-band .hero__trust {
  justify-content: center;
  margin-left: auto;
  margin-right: auto;
}

/* --------------------------------------------------------------------------
   18. Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background-color: var(--ko-ink);
  color: #b7d2d9;
  padding: clamp(2.75rem, 6vw, 4.5rem) 0 2.125rem;
}

.site-footer__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(200px, 100%), 1fr));
  gap: clamp(1.75rem, 4vw, 3rem);
}

.site-footer__logo {
  height: 44px;
  width: auto;
  background-color: #ffffff;
  border-radius: 10px;
  padding: 6px 10px;
}

.site-footer__tagline {
  margin: 1rem 0 0;
  font-size: 0.90625rem;
  line-height: 1.7;
  color: #a9c6ce;
}

.site-footer__heading {
  font-size: 0.78125rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: #7fe0e9;
  margin: 0 0 0.875rem;
  text-transform: uppercase;
}

.site-footer__list {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-footer__list a {
  font-size: 0.9375rem;
  color: #dceaee;
}

.site-footer__list a:hover {
  color: #7fe0e9;
}

.site-footer__list span {
  font-size: 0.84375rem;
  color: #a9c6ce;
}

.site-footer__bottom {
  margin-top: clamp(2rem, 4vw, 3rem);
  padding-top: 1.375rem;
  border-top: 1px solid rgba(183, 210, 217, 0.18);
  display: flex;
  flex-wrap: wrap;
  gap: 0.625rem;
  justify-content: space-between;
  font-size: 0.84375rem;
  color: #a9c6ce;
}

.site-footer__bottom p {
  margin: 0;
}

/* Secondary attribution line — visibly interactive, does not compete
   with KasirONE branding. */
.site-footer__credit a {
  color: #dceaee;
  font-weight: 600;
  text-decoration: underline;
  text-decoration-color: rgba(127, 224, 233, 0.55);
  text-underline-offset: 3px;
}

.site-footer__credit a:hover,
.site-footer__credit a:focus-visible {
  color: #7fe0e9;
  text-decoration-color: #7fe0e9;
}

/* Light mobile-only rhythm pass: reduce obviously excessive whitespace
   on small phones without compressing readability. */
@media (max-width: 480px) {
  .section {
    padding-block: 3rem;
  }

  /* Hero: smaller floating cart so the mascot stays dominant */
  .cart-card {
    width: min(48%, 176px);
    padding: 0.75rem;
    top: 0.25rem;
  }

  .hero__visual {
    padding: 2.75rem 0 1rem;
  }

  /* Brand moment: mascot ~15% smaller, composition stays centered */
  .brand-moment__img {
    width: min(76%, 320px);
  }

  .chips {
    gap: 0.625rem;
    margin-top: 1.5rem;
  }

  .plain-list li {
    margin-bottom: 0.625rem;
  }

  .site-footer__bottom {
    flex-direction: column;
    gap: 0.5rem;
  }
}

/* --------------------------------------------------------------------------
   19. Reduced motion / print
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }
}

@media print {
  .site-header {
    position: static;
  }
}