:root {
  color-scheme: light dark;

  --bg: #f5f5fa;
  --bg2: #ebebf3;
  --bg3: #dddde8;
  --border: #c8c8d8;
  --accent: #036f4d;
  --accent2: #9a5200;
  --text: #1a1a2e;
  --muted: #27272f;
  --green: #11823a;
  --card-bg: #ffffff;
  --btn-primary-text: #fff;
  --badge-orange-bg: #fff5e6;
  --badge-orange-text: #7a4100;
  --badge-orange-border: #9a5200;
  --nav-bg: rgba(245, 245, 250, 0.85);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f0f11;
    --bg2: #161619;
    --bg3: #1e1e23;
    --border: #2a2a32;
    --accent: #6ee7b7;
    --accent2: #f59e0b;
    --text: #e8e8f0;
    --muted: #c0c0d4;
    --green: #4ade80;
    --red: #f87171;
    --card-bg: #18181d;
    --btn-primary-text: #000;
    --badge-orange-bg: #ffc85014;
    --badge-orange-text: #f4c542;
    --badge-orange-border: #f4c54233;
    --nav-bg: rgba(15, 15, 17, 0.85);
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

::selection {
  background: var(--accent);
  color: var(--btn-primary-text);
}

html {
  scroll-behavior: smooth;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}
body {
  font-family: "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* NAV */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1024px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 0.75rem 1.5rem;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.1rem;
  text-decoration: none;
  color: var(--text);
}
.nav-logo img {
  width: 28px;
  height: 28px;
  border-radius: 6px;
}
nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s;
}
nav a:hover {
  color: var(--text);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}
.nav-cta {
  background: var(--accent);
  color: var(--btn-primary-text) !important;
  padding: 0.4rem 0.9rem;
  border-radius: 6px;
  font-weight: 600;
}
.nav-cta:hover {
  opacity: 0.9;
}

/* HERO */
.hero {
  text-align: center;
  padding: 5rem 1.5rem 4rem;
  max-width: 1024px;
  margin: 0 auto;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--bg3);
  border: 1px solid var(--border);
  padding: 0.3rem 0.8rem;
  border-radius: 999px;
  font-size: 0.78rem;
  color: var(--muted);
  margin-bottom: 1.5rem;
}
.hero h1 {
  font-size: clamp(2rem, 5vw, 3.4rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.2rem;
}
.hero h1 em {
  font-style: normal;
  color: var(--accent);
  text-wrap: nowrap;
  white-space: nowrap;
}
.hero p {
  color: var(--muted);
  font-size: 1.1rem;
  max-width: 580px;
  margin: 0 auto 2rem;
}
.hero-btns {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.65rem 1.4rem;
  border-radius: 8px;
  font-weight: 600;
  text-decoration: none;
  font-size: 0.95rem;
  transition: all 0.2s;
}
.btn-primary {
  background: var(--accent);
  color: var(--btn-primary-text);
}
.btn-primary:hover {
  opacity: 0.88;
  transform: translateY(-1px);
}
.btn-secondary {
  border: 1px solid var(--border);
  color: var(--text);
  background: var(--bg3);
}
.btn-secondary:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

/* DEMO TICKER */
.demo-ticker {
  margin: 3rem auto 0;
  max-width: 540px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem 1.5rem;
}
.demo-ticker .label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: 0.75rem;
}
.ticker-files {
  list-style: none;
}
.ticker-file {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--border);
}
.ticker-file:last-of-type {
  border-bottom: none;
}
.ticker-file .icon {
  font-size: 1.2rem;
}
.ticker-file {
  text-align: left;
  font-size: clamp(0.75rem, 2.5vw, 0.85rem);
}
.ticker-file .size {
  color: var(--muted);
}
.ticker-file .savings {
  color: var(--green);
  font-weight: 600;
}
.ticker-total {
  margin-top: 0.75rem;
  text-align: right;
  font-size: clamp(0.85rem, 2.5vw, 1rem) !important;
  color: var(--muted);
}
.ticker-total strong {
  color: var(--green);
  font-size: clamp(0.85rem, 2.5vw, 1rem) !important;
}

/* STATS */
.stats {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
  padding: 2.5rem 1.5rem;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--bg2);
  text-align: center;
  list-style-type: none;
}
.stat-item .num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent);
  display: block;
}
.stat-item .desc {
  font-size: 0.83rem;
  color: var(--muted);
}

/* SECTIONS */
section {
  padding: 4rem 1.5rem;
  max-width: 1024px;
  margin: 0 auto;
}
.section-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 0.5rem;
  display: block;
}
section h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  margin-bottom: 0.5rem;
}
section > p {
  color: var(--muted);
  margin-bottom: 2rem;
  max-width: 600px;
}

/* HOW IT WORKS */
.steps {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  list-style-type: none;
}
.step-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
}
.step-num {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 0.75rem;
  display: block;
}
.step-icon {
  font-size: 2rem;
  margin-bottom: 0.75rem;
  display: block;
}
.step-card h3 {
  font-size: 1rem;
  margin-bottom: 0.4rem;
}
.step-card p {
  font-size: 0.88rem;
  color: var(--muted);
}

/* FEATURES */
.features-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  list-style-type: none;
}
.feature-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.4rem;
}
.feature-card .feat-icon {
  font-size: 1.5rem;
  margin-bottom: 0.6rem;
  display: block;
}
.feature-card h3 {
  font-size: 0.95rem;
  margin-bottom: 0.35rem;
}
.feature-card p {
  font-size: 0.85rem;
  color: var(--muted);
}
.badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  margin-top: 0.5rem;
  background: rgba(74, 222, 128, 0.12);
  color: var(--green);
  border: 1px solid rgba(74, 222, 128, 0.25);
}

/* REAL RESULTS — side-by-side on desktop */
.results-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  align-items: start;
}
@media (max-width: 640px) {
  .results-wrapper {
    grid-template-columns: 1fr;
  }
}
.results-col h3 {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.75rem;
}
.results-col.after-col h3 {
  color: var(--accent);
}
.file-rows {
  list-style: none;
}
.file-row {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.9rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.65rem;
}
.file-row .ficon {
  font-size: 1.3rem;
}
.file-row .fname {
  font-size: 0.85rem;
  font-weight: 600;
  flex: 1;
}
.file-row .fmeta {
  font-size: 0.75rem;
  color: var(--muted);
}
.file-row .fsaving {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--green);
  background: rgba(74, 222, 128, 0.1);
  padding: 0.2rem 0.45rem;
  border-radius: 4px;
  white-space: nowrap;
  margin-left: auto;
}
.results-total {
  margin-top: 0.5rem;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  grid-column: 1 / -1;
}
.results-total .label {
  font-size: 0.85rem;
  color: var(--muted);
}
.results-total .value {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--green);
}

/* DOWNLOAD */
#download h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  margin-bottom: 0.5rem;
}
#download > p {
  color: var(--muted);
  font-size: 1rem;
}

.dl-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  margin-bottom: 1.5rem;
  text-align: left;
  list-style: none;
}
.dl-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: border-color 0.2s;
}
.dl-card:hover {
  border-color: var(--accent2);
}
.dl-card.detected-os {
  border-color: var(--accent);
}
.dl-card .os-icon {
  font-size: 2.2rem;
  margin-bottom: 0.75rem;
  display: block;
}
.dl-card h3 {
  font-size: 1rem;
  margin-bottom: 0.3rem;
}
.dl-card .dl-badge {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 600;
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  margin-bottom: 0.75rem;
}
.dl-badge.tested {
  background: rgba(74, 222, 128, 0.12);
  color: var(--green);
  border: 1px solid rgba(74, 222, 128, 0.25);
}
.dl-badge.future {
  background: var(--badge-orange-bg);
  color: var(--badge-orange-text);
  border: 1px solid var(--badge-orange-border);
}
.dl-card p {
  font-size: 0.82rem;
  color: var(--muted);
  margin-bottom: 1rem;
}
.dl-card.future-card .btn-dl-disabled {
  display: inline-block;
  padding: 0.55rem 1.1rem;
  border-radius: 7px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--muted);
  background: var(--bg3);
  border: 1px solid var(--border);
  cursor: default;
}
.btn-dl {
  display: inline-block;
  background: var(--accent);
  color: var(--btn-primary-text);
  padding: 0.55rem 1.1rem;
  border-radius: 7px;
  font-weight: 600;
  text-decoration: none;
  font-size: 0.88rem;
  transition: opacity 0.2s;
}
.btn-dl:hover {
  opacity: 0.85;
}
.dl-note {
  text-align: center;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem 1.25rem;
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.7;
  /* max-width: 680px; */
  margin: 0 auto;
}
.dl-note a {
  color: var(--accent2);
}

/* GUIDE */
.guide-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}
.tab-btn {
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 0.45rem 1rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.88rem;
  font-weight: 500;
  transition: all 0.2s;
}
.tab-btn.active {
  background: var(--accent);
  color: var(--btn-primary-text);
  border-color: var(--accent);
}
.tab-content {
  display: none;
}
.tab-content.active {
  display: block;
}
.guide-steps {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.guide-step {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem 1.25rem;
}
.guide-step .num {
  background: var(--accent);
  color: var(--btn-primary-text);
  width: 1.6rem;
  height: 1.6rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 0.1rem;
}
.guide-step h3 {
  font-size: 0.9rem;
  margin-bottom: 0.2rem;
}
.guide-step p {
  font-size: 0.83rem;
  color: var(--muted);
}

/* COMPAT */
.compat-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr 1fr;
}
@media (max-width: 500px) {
  .compat-grid {
    grid-template-columns: 1fr;
  }
}
.compat-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem;
}
.compat-card h3 {
  font-size: 0.95rem;
  margin-bottom: 0.75rem;
}
.compat-card ul {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-left: 20px;
  margin-top: 16px;
}
.compat-card li {
  font-size: 0.84rem;
  color: var(--muted);
}

/* FOOTER */
footer {
  background: var(--bg2);
  border-top: 1px solid var(--border);
}
.footer-inner {
  max-width: 1024px;
  margin: 0 auto;
  padding: 2rem 1.5rem 0;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  align-items: start;
}
@media (max-width: 560px) {
  .footer-inner {
    grid-template-columns: 1fr;
  }
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.6rem;
}
.footer-brand img {
  width: 28px;
  height: 28px;
  border-radius: 6px;
}
.footer-brand span {
  font-weight: 700;
}
.footer-desc {
  font-size: 0.83rem;
  color: var(--muted);
  max-width: 360px;
  line-height: 1.6;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  align-items: flex-end;
}
@media (max-width: 560px) {
  .footer-links {
    align-items: flex-start;
  }
}
.footer-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.85rem;
  transition: color 0.2s;
}
.footer-links a:hover {
  color: var(--text);
}
.footer-bottom {
  max-width: 1024px;
  margin: 1.5rem auto 0;
  padding: 0 1.5rem 1rem 1.5rem;
}
.footer-bottom-content {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 1.5rem 0 32px 0;
  font-size: 0.78rem;
  color: var(--muted);
}
.footer-bottom a {
  color: var(--muted);
  text-decoration: none;
}
.footer-bottom a:hover {
  color: var(--accent2);
}
.collab-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: var(--bg3);
  border: 1px solid var(--border);
  padding: 0.2rem 0.6rem;
  border-radius: 6px;
  font-size: 0.75rem;
}
.collab-badge a {
  color: var(--accent);
  text-decoration: none;
}
.collab-badge a:hover {
  text-decoration: underline;
}

.lang-switcher {
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 0.3rem 0.65rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 600;
  transition: all 0.2s;
  font-family: inherit;
}
.lang-switcher:hover {
  border-color: var(--accent);
  color: var(--text);
}

@media (max-width: 640px) {
  .nav-links a:not(.nav-cta) {
    display: none;
  }
}

@media (max-width: 400px) {
  .ticker-file {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
  }

  .ticker-file > div {
    width: 100%;
    display: flex;
    justify-content: space-between;
  }

  .ticker-file .name {
    display: flex;
    gap: 0.4rem;
    align-items: center;
    flex-wrap: wrap;
  }

  .ticker-file .size {
    font-size: 0.75rem;
  }

  .ticker-file .savings {
    font-size: 0.75rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}