:root {
  --green: #0a6b45;
  --green-deep: #053825;
  --green-soft: #e8f6ef;
  --crimson: #d5182e;
  --gold: #d4a017;
  --gold-soft: #f7e7b0;
  --ink: #0c1812;
  --muted: #4d6358;
  --line: rgba(12, 24, 18, 0.1);
  --paper: #f4faf6;
  --white: #ffffff;
  --shadow: 0 18px 50px rgba(5, 56, 37, 0.14);
  --radius: 22px;
  --max: 1180px;
  --font-display: "Bricolage Grotesque", "Segoe UI", sans-serif;
  --font-body: "Manrope", "Segoe UI", sans-serif;
}

*,
*::before,
*::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  max-width: 100%;
  overflow-x: clip;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-body);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(10, 107, 69, 0.16), transparent 60%),
    radial-gradient(900px 500px at 100% 0%, rgba(212, 160, 23, 0.12), transparent 55%),
    linear-gradient(180deg, #f7fcf9 0%, var(--paper) 40%, #eef7f2 100%);
  line-height: 1.65;
  max-width: 100%;
  overflow-x: visible;
  overflow-wrap: anywhere;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }

.container {
  width: min(var(--max), calc(100% - 2rem));
  max-width: 100%;
  margin-inline: auto;
  padding-inline: 0;
  box-sizing: border-box;
}

/* Breadcrumb */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.55rem;
  align-items: center;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--muted);
  margin: 1rem 0 0.2rem;
}

.breadcrumb a { color: var(--green-deep); }
.breadcrumb span[aria-hidden="true"] { opacity: 0.45; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  width: 100%;
  max-width: 100%;
  backdrop-filter: blur(16px);
  background: rgba(244, 250, 246, 0.86);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 1rem;
  align-items: center;
  min-height: 74px;
  max-width: 100%;
}

.brand-link {
  display: flex;
  align-items: center;
  width: clamp(140px, 22vw, 210px);
}

.brand-link img {
  width: 100%;
  height: auto;
  border-radius: 10px;
}

.nav-main {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.35rem 0.85rem;
}

.nav-main a {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--muted);
  padding: 0.35rem 0.2rem;
  position: relative;
}

.nav-main a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--green), var(--gold));
  transition: width 0.25s ease;
}

.nav-main a:hover,
.nav-main a[aria-current="page"] { color: var(--green-deep); }
.nav-main a:hover::after,
.nav-main a[aria-current="page"]::after { width: 100%; }

.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.72rem 1.15rem;
  border-radius: 999px;
  border: 0;
  color: #fff;
  font-weight: 800;
  letter-spacing: 0.01em;
  background: linear-gradient(135deg, var(--green) 0%, #0d8a58 45%, var(--crimson) 140%);
  box-shadow: 0 10px 24px rgba(10, 107, 69, 0.28);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-download:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 30px rgba(10, 107, 69, 0.35);
}

.btn-download svg { width: 18px; height: 18px; fill: currentColor; }

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 12px;
  width: 44px;
  height: 44px;
}

/* Hero */
.hero {
  position: relative;
  padding: 2.4rem 0 1.2rem;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 2rem;
  align-items: center;
}

.hero-copy {
  position: relative;
  z-index: 2;
  animation: rise 0.8s ease both;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-weight: 800;
  color: var(--green);
  background: rgba(10, 107, 69, 0.1);
  border: 1px solid rgba(10, 107, 69, 0.15);
  border-radius: 999px;
  padding: 0.35rem 0.8rem;
  margin-bottom: 1rem;
}

.hero h1 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 3.7rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
}

.content-date {
  margin: -0.35rem 0 1rem;
  font-size: 0.92rem;
  color: var(--muted);
}

.content-date time {
  font-weight: 600;
}

.hero h1 span {
  background: linear-gradient(120deg, var(--green-deep), var(--green) 45%, var(--gold));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-lead {
  font-size: 1.08rem;
  color: var(--muted);
  max-width: 38rem;
  margin: 0 0 1.4rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-bottom: 1.4rem;
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.72rem 1.1rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.7);
  font-weight: 750;
}

.hero-points {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.7rem;
}

.hero-points div {
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 0.75rem 0.85rem;
}

.hero-points strong {
  display: block;
  font-size: 0.95rem;
}

.hero-points span {
  color: var(--muted);
  font-size: 0.82rem;
}

.hero-visual {
  position: relative;
  max-width: 100%;
  overflow: hidden;
  animation: floaty 5s ease-in-out infinite;
}

.hero-visual::before {
  content: "";
  position: absolute;
  inset: 8% 0 -6% 8%;
  background: linear-gradient(145deg, rgba(10, 107, 69, 0.35), rgba(212, 160, 23, 0.28));
  filter: blur(28px);
  border-radius: 40% 60% 55% 45%;
  z-index: 0;
}

.main-shot {
  position: relative;
  z-index: 1;
  width: min(100%, 480px);
  margin-inline: auto;
  aspect-ratio: 1;
  border-radius: 28px;
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 3px solid rgba(255, 255, 255, 0.85);
}

.main-shot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-badge {
  position: absolute;
  z-index: 2;
  right: 4%;
  bottom: 6%;
  background: rgba(12, 24, 18, 0.88);
  color: #fff;
  padding: 0.7rem 0.9rem;
  border-radius: 16px;
  font-size: 0.84rem;
  max-width: 180px;
  backdrop-filter: blur(8px);
}

/* Marquee */
.marquee {
  margin: 1.2rem 0 2rem;
  border-block: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.55);
  overflow: hidden;
  max-width: 100%;
  white-space: nowrap;
}

.marquee-track {
  display: inline-flex;
  gap: 2rem;
  padding: 0.85rem 0;
  animation: slide 28s linear infinite;
  font-weight: 750;
  color: var(--green-deep);
}

.marquee-track span { display: inline-flex; align-items: center; gap: 0.45rem; }

/* Sections */
.section {
  padding: 2.6rem 0;
  max-width: 100%;
  overflow-x: clip;
}

.section-head {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 1rem;
  margin-bottom: 1.5rem;
  align-items: end;
}

.section-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.4vw, 2.4rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.section-head p {
  margin: 0;
  color: var(--muted);
}

.kicker {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--crimson);
  margin-bottom: 0.45rem;
}

/* Bento */
.bento {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1rem;
}

.bento-item {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  min-height: 220px;
  border: 1px solid var(--line);
  background: #fff;
  box-shadow: 0 10px 30px rgba(5, 56, 37, 0.06);
  transition: transform 0.25s ease;
}

.bento-item:hover { transform: translateY(-4px); }

.bento-item.large { grid-column: span 7; min-height: 320px; }
.bento-item.medium { grid-column: span 5; }
.bento-item.small { grid-column: span 4; min-height: 240px; }

.bento-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  inset: 0;
}

.bento-item .overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 20%, rgba(5, 30, 20, 0.88) 100%);
  padding: 1.2rem;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  color: #fff;
}

.bento-item h3 {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-size: 1.35rem;
}

.bento-item p {
  margin: 0;
  color: rgba(255, 255, 255, 0.86);
  font-size: 0.92rem;
}

/* Split */
.split {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 1.4rem;
  align-items: stretch;
}

.split.reverse { grid-template-columns: 1.05fr 0.95fr; }
.split.reverse .split-media { order: 2; }

.split-media {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  min-height: 320px;
}

.split-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.split-panel {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.split-panel h2 {
  margin: 0 0 0.8rem;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  letter-spacing: -0.02em;
}

.split-panel p { color: var(--muted); }

.feature-list {
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.7rem;
}

.feature-list li {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 0.7rem;
  align-items: start;
  padding: 0.7rem;
  border-radius: 14px;
  background: var(--green-soft);
}

.feature-list .ico {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: #fff;
  color: var(--green);
}

.feature-list strong { display: block; }
.feature-list span { color: var(--muted); font-size: 0.9rem; }

/* Steps rail */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.9rem;
  counter-reset: step;
}

.step {
  position: relative;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 1.1rem;
  overflow: hidden;
}

.step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  position: absolute;
  right: 0.7rem;
  top: 0.3rem;
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  color: rgba(10, 107, 69, 0.12);
}

.step h3 {
  margin: 0 0 0.4rem;
  font-size: 1.05rem;
}

.step p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

/* Mosaic text */
.mosaic {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 1rem;
}

.mosaic-main,
.mosaic-side {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.35rem;
}

.mosaic-main h2,
.mosaic-side h3 {
  margin-top: 0;
  font-family: var(--font-display);
  letter-spacing: -0.02em;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.chip {
  padding: 0.4rem 0.75rem;
  border-radius: 999px;
  background: var(--green-soft);
  border: 1px solid rgba(10, 107, 69, 0.12);
  font-size: 0.84rem;
  font-weight: 700;
}

.stat-stack {
  display: grid;
  gap: 0.8rem;
}

.stat {
  padding: 0.9rem;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--green-deep), var(--green));
  color: #fff;
}

.stat strong {
  display: block;
  font-size: 1.5rem;
  font-family: var(--font-display);
}

/* FAQ */
.faq {
  display: grid;
  gap: 0.7rem;
}

.faq details {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 0.95rem 1.1rem;
}

.faq summary {
  cursor: pointer;
  font-weight: 800;
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}

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

.faq summary::after {
  content: "+";
  color: var(--green);
  font-size: 1.2rem;
}

.faq details[open] summary::after { content: "–"; }

.faq p {
  margin: 0.7rem 0 0;
  color: var(--muted);
}

/* Takeaways */
.takeaways {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.8rem;
  margin: 0.4rem 0 1.6rem;
}

.takeaways article {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 1rem 1.05rem;
  box-shadow: 0 8px 24px rgba(5, 56, 37, 0.05);
}

.takeaways h3 {
  margin: 0 0 0.35rem;
  font-size: 1rem;
  font-family: var(--font-display);
}

.takeaways p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

/* Data table */
.data-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-x: contain;
  max-width: 100%;
  margin: 1rem 0;
  border-radius: 16px;
  border: 1px solid var(--line);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 0;
  background: #fff;
}

.data-table th,
.data-table td {
  padding: 0.75rem 0.9rem;
  text-align: left;
  border-bottom: 1px solid var(--line);
  font-size: 0.92rem;
}

.data-table th {
  background: var(--green-deep);
  color: #fff;
  font-weight: 750;
}

.data-table tr:last-child td { border-bottom: 0; }
.data-table tr:nth-child(even) td { background: rgba(232, 246, 239, 0.45); }

.inline-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.9rem;
}

.inline-links a {
  font-size: 0.86rem;
  font-weight: 750;
  color: var(--green-deep);
  background: var(--green-soft);
  border: 1px solid rgba(10, 107, 69, 0.12);
  border-radius: 999px;
  padding: 0.35rem 0.75rem;
}

.prose-block {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.35rem 1.45rem;
}

.prose-block h2 {
  margin: 0 0 0.7rem;
  font-family: var(--font-display);
  letter-spacing: -0.02em;
  font-size: clamp(1.45rem, 3vw, 2rem);
}

.prose-block p { color: var(--muted); margin: 0 0 0.85rem; }
.prose-block p:last-child { margin-bottom: 0; }

.responsible-box {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 1rem;
  padding: 1.3rem;
  border-radius: var(--radius);
  border: 1px solid rgba(213, 24, 46, 0.18);
  background: linear-gradient(135deg, #fff7f7, #ffffff 55%, #f3fbf6);
}

.responsible-box h2 {
  margin: 0 0 0.55rem;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.8vw, 1.85rem);
}

.responsible-box p,
.responsible-box li {
  color: var(--muted);
}

.responsible-box ul {
  margin: 0.4rem 0 0;
  padding-left: 1.1rem;
}

@media (max-width: 980px) {
  .takeaways,
  .responsible-box {
    grid-template-columns: 1fr;
  }
}

/* CTA band */
.cta-band {
  margin: 1rem 0 2rem;
  border-radius: 28px;
  padding: 1.6rem;
  background:
    linear-gradient(120deg, rgba(5, 56, 37, 0.94), rgba(10, 107, 69, 0.9) 55%, rgba(213, 24, 46, 0.82)),
    url("./kkbd-app-download-bd.webp") center/cover;
  color: #fff;
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 1rem;
  align-items: center;
  overflow: hidden;
  position: relative;
}

.cta-band::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(110deg, rgba(5, 40, 26, 0.88), rgba(5, 40, 26, 0.55));
}

.cta-band > * { position: relative; z-index: 1; }

.cta-band h2 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
}

.cta-band p { margin: 0 0 1rem; color: rgba(255, 255, 255, 0.9); }

.btn-download.light {
  background: linear-gradient(135deg, #fff, var(--gold-soft));
  color: var(--green-deep);
}

/* Footer */
.site-footer {
  background: var(--ink);
  color: rgba(255, 255, 255, 0.86);
  padding: 2.4rem 0 1.4rem;
  margin-top: 1rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr repeat(3, 1fr);
  gap: 1.2rem;
}

.site-footer h4 {
  margin: 0 0 0.7rem;
  color: #fff;
  font-family: var(--font-display);
}

.site-footer a {
  display: block;
  color: rgba(255, 255, 255, 0.72);
  margin-bottom: 0.4rem;
  font-size: 0.92rem;
}

.site-footer a:hover { color: var(--gold-soft); }

.footer-note {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 0.84rem;
  color: rgba(255, 255, 255, 0.6);
}

/* Reveal animation */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.in {
  opacity: 1;
  transform: none;
}

@keyframes rise {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: none; }
}

@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes slide {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

@media (max-width: 980px) {
  .header-inner { grid-template-columns: minmax(0, 1fr) auto; }
  .nav-main {
    display: none;
    position: absolute;
    left: 1rem;
    right: 1rem;
    top: calc(100% + 0.35rem);
    z-index: 60;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 0.8rem;
    flex-direction: column;
    box-shadow: var(--shadow);
    max-height: min(70vh, 420px);
    overflow-y: auto;
  }
  .nav-main.open { display: flex; }
  .nav-toggle { display: inline-grid; place-items: center; justify-self: end; }
  .brand-link { width: clamp(120px, 42vw, 180px); }
  .hero-grid,
  .section-head,
  .split,
  .split.reverse,
  .mosaic,
  .cta-band,
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .split.reverse .split-media { order: 0; }
  .bento-item.large,
  .bento-item.medium,
  .bento-item.small { grid-column: span 12; }
  .steps { grid-template-columns: 1fr 1fr; }
  .hero-points { grid-template-columns: 1fr; }
  .btn-download.header-cta {
    justify-self: stretch;
    justify-content: center;
    grid-column: 1 / -1;
    width: 100%;
    max-width: 100%;
  }
  .cta-band { padding: 1.25rem; }
  .prose-block,
  .split-panel,
  .mosaic-main,
  .mosaic-side { padding-inline: 1rem; }
}

@media (max-width: 640px) {
  .container { width: calc(100% - 1.25rem); }
  .steps { grid-template-columns: 1fr; }
  .header-inner {
    min-height: 64px;
    gap: 0.65rem;
  }
  .hero { padding: 1.4rem 0 0.8rem; }
  .hero h1 { font-size: clamp(1.7rem, 8.2vw, 2.35rem); }
  .hero-lead { font-size: 0.98rem; }
  .hero-actions { gap: 0.55rem; }
  .btn-download,
  .btn-ghost {
    max-width: 100%;
    justify-content: center;
  }
  .eyebrow {
    max-width: 100%;
    white-space: normal;
    line-height: 1.35;
  }
  .section { padding: 1.8rem 0; }
  .data-table th,
  .data-table td {
    padding: 0.65rem 0.7rem;
    font-size: 0.86rem;
  }
  .site-footer { padding: 1.8rem 0 1.2rem; }
}