:root {
  --bg-base: #ffffff;
  --bg-mint: #dcffb5;
  --bg-pink: #ffd1f4;
  --card: #ffffff;
  --ink: #121212;
  --ink-soft: #2f2f2f;
  --line: #131313;
  --accent: #ff90e8;
  --accent-strong: #ff73de;
  --accent-mint: #b3f15b;
  --white: #ffffff;
  --success: #0a7f65;
  --error: #b00020;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  min-height: 100vh;
  font-family: "Space Grotesk", "Noto Sans SC", sans-serif;
  background: #ffffff;
}

body.modal-open {
  overflow: hidden;
}

.wrap {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 20px;
}

.card {
  width: min(700px, 100%);
  border: 2px solid var(--line);
  border-radius: 18px;
  background: var(--card);
  padding: 28px;
  box-shadow: 10px 10px 0 var(--line);
  animation: rise 0.45s ease-out;
}

.converter-card {
  position: relative;
}

.close-home-btn {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 34px;
  height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--line);
  border-radius: 10px;
  background: var(--white);
  color: var(--ink);
  text-decoration: none;
  font: 700 22px/1 "IBM Plex Mono", monospace;
  transition: transform 0.15s ease, background 0.15s ease;
}

.close-home-btn:hover {
  transform: translateY(-1px);
  background: #f7f7f7;
}

.close-home-btn:focus-visible {
  outline: 3px solid var(--accent-mint);
  outline-offset: 2px;
}

@keyframes rise {
  from {
    transform: translateY(10px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.tag {
  display: inline-block;
  margin: 0 0 8px;
  padding: 4px 10px;
  border: 2px solid var(--line);
  border-radius: 999px;
  background: var(--white);
  font-family: "IBM Plex Mono", "Noto Sans SC", monospace;
  font-size: 12px;
}

h1 {
  margin: 0;
  font-size: clamp(32px, 6vw, 56px);
  line-height: 0.95;
}

.sub {
  margin: 10px 0 24px;
  font-size: 16px;
  color: var(--ink-soft);
}

.page-nav {
  margin: -8px 0 18px;
  font-family: "IBM Plex Mono", "Noto Sans SC", monospace;
  font-size: 12px;
}

.page-nav a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 2px solid var(--line);
}

.page-nav a:hover {
  opacity: 0.82;
}

form {
  display: grid;
  gap: 14px;
}

.field {
  display: grid;
  gap: 8px;
}

.field span {
  font-weight: 600;
}

input[type="file"]:not(.file-input),
select {
  width: 100%;
  border: 2px solid var(--line);
  border-radius: 12px;
  padding: 12px;
  background: var(--white);
  font: inherit;
}

.file-picker {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 10px;
  border: 2px solid var(--line);
  border-radius: 12px;
  padding: 8px;
  background: var(--white);
}

.file-input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.file-picker-btn {
  flex-shrink: 0;
  border: 2px solid var(--line);
  border-radius: 10px;
  background: linear-gradient(90deg, #f6ffc7, #ffd9f8);
  color: var(--ink);
  font: 700 13px "IBM Plex Mono", monospace;
  padding: 8px 12px;
  cursor: pointer;
  transition: transform 0.15s ease, filter 0.15s ease;
}

.file-picker-btn:hover {
  transform: translateY(-1px);
  filter: brightness(0.99);
}

.file-picker-btn:focus-visible {
  outline: 3px solid var(--accent-mint);
  outline-offset: 2px;
}

.file-picker-name {
  flex: 1;
  min-width: 0;
  color: var(--ink-soft);
  font: 500 12px "IBM Plex Mono", monospace;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-picker.has-file .file-picker-name {
  color: var(--ink);
  font-weight: 600;
}


#submit-btn,
.primary-link,
.secondary-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--line);
  border-radius: 12px;
  padding: 12px 16px;
  font: 700 15px "Space Grotesk", sans-serif;
  text-decoration: none;
  transition: transform 0.15s ease, background 0.15s ease, color 0.15s ease;
}

#submit-btn,
.primary-link {
  background: linear-gradient(90deg, var(--accent), var(--accent-strong));
  color: var(--ink);
}

#submit-btn:hover,
.primary-link:hover {
  transform: translateY(-2px);
}

#submit-btn:disabled {
  opacity: 0.72;
  cursor: not-allowed;
  transform: none;
}

.secondary-link {
  background: var(--white);
  color: var(--ink);
}

.secondary-link:hover {
  transform: translateY(-2px);
  background: #fafafa;
}

.progress-panel {
  margin-top: 14px;
  border: 2px solid var(--line);
  border-radius: 12px;
  background: var(--white);
  padding: 12px;
  display: grid;
  gap: 8px;
}

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

.progress-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-family: "IBM Plex Mono", "Noto Sans SC", monospace;
  font-size: 12px;
}

.progress-track {
  height: 14px;
  border: 2px solid var(--line);
  border-radius: 999px;
  background: #fff9ff;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--accent), var(--accent-mint));
  transition: width 0.25s ease;
}

.result-message {
  margin-top: 10px;
  min-height: 20px;
  font-family: "IBM Plex Mono", "Noto Sans SC", monospace;
  font-size: 12px;
  white-space: pre-wrap;
}

.result-message.success {
  color: var(--success);
}

.result-message.error {
  color: var(--error);
}


.download-notice-modal {
  position: fixed;
  inset: 0;
  z-index: 120;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(18, 18, 18, 0.45);
}

.download-notice-modal[hidden] {
  display: none;
}

.download-notice-card {
  width: min(460px, 100%);
  border: 2px solid var(--line);
  border-radius: 16px;
  background: var(--card);
  box-shadow: 8px 8px 0 var(--line);
  padding: 18px;
  display: grid;
  gap: 12px;
  animation: rise 0.2s ease-out;
  position: relative;
}

.download-notice-dismiss {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 30px;
  height: 30px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--card);
  color: var(--ink-soft);
  font: 700 18px/1 "Space Grotesk", sans-serif;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: transform 0.15s ease, color 0.15s ease;
}

.download-notice-dismiss:hover {
  transform: translateY(-1px);
  color: var(--ink);
}

.download-notice-dismiss:focus-visible {
  outline: 3px solid var(--accent-mint);
  outline-offset: 2px;
}

.download-notice-title {
  margin: 0;
  font: 700 18px "Space Grotesk", sans-serif;
}

.download-notice-text {
  margin: 0;
  color: var(--ink-soft);
  font: 500 14px/1.45 "Space Grotesk", sans-serif;
}

.download-notice-btn {
  justify-self: flex-end;
  border: 2px solid var(--line);
  border-radius: 10px;
  background: linear-gradient(90deg, var(--accent), var(--accent-strong));
  color: var(--ink);
  font: 700 13px "IBM Plex Mono", monospace;
  padding: 9px 14px;
  cursor: pointer;
  transition: transform 0.15s ease;
}

.download-notice-btn:hover {
  transform: translateY(-1px);
}

.download-notice-btn:focus-visible {
  outline: 3px solid var(--accent-mint);
  outline-offset: 2px;
}

.zip-format-confirm-card {
  width: min(500px, 100%);
}

.gold-member-modal-card {
  width: min(620px, 100%);
}

.gold-member-compare {
  display: grid;
  gap: 10px;
  border: 2px solid var(--line);
  border-radius: 14px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(244, 251, 247, 0.98));
  padding: 12px;
}

.gold-member-compare-header {
  display: grid;
  gap: 8px;
}

.gold-member-compare-title {
  margin: 0;
  font: 700 12px "IBM Plex Mono", monospace;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.gold-member-compare-headings,
.gold-member-compare-row {
  display: grid;
  grid-template-columns: minmax(120px, 1.2fr) minmax(96px, 1fr) minmax(96px, 1fr);
  gap: 8px;
  align-items: stretch;
}

.gold-member-compare-grid {
  display: grid;
  gap: 8px;
}

.gold-member-compare-spacer {
  display: block;
}

.gold-member-tier,
.gold-member-value {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 8px 10px;
  text-align: center;
  font: 700 12px/1.35 "IBM Plex Mono", monospace;
}

.gold-member-tier {
  background: #fff4cc;
}

.gold-member-tier-free,
.gold-member-value-free {
  background: #f4f4f4;
}

.gold-member-tier-gold,
.gold-member-value-gold {
  background: linear-gradient(135deg, #ffd978, #ffc145);
}

.gold-member-feature {
  display: flex;
  align-items: center;
  padding: 8px 2px;
  font: 700 13px/1.35 "Space Grotesk", sans-serif;
  color: var(--ink);
}

.zip-format-confirm-label {
  margin: 0;
  font: 700 12px "IBM Plex Mono", monospace;
  letter-spacing: 0.02em;
}

.zip-format-confirm-select {
  width: 100%;
  border: 2px solid var(--line);
  border-radius: 10px;
  background: var(--white);
  color: var(--ink);
  padding: 9px 12px;
  font: 600 13px "IBM Plex Mono", monospace;
}

.zip-format-confirm-select:focus-visible {
  outline: 3px solid var(--accent-mint);
  outline-offset: 2px;
}

.zip-format-confirm-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

.zip-format-confirm-btn {
  min-width: 108px;
}

.zip-format-confirm-btn-secondary {
  border: 2px solid var(--line);
  border-radius: 10px;
  background: var(--white);
  color: var(--ink);
  font: 700 13px "IBM Plex Mono", monospace;
  padding: 9px 14px;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease;
}

.zip-format-confirm-btn-secondary:hover {
  transform: translateY(-1px);
  background: #f4f4f4;
}

.zip-format-confirm-btn-secondary:focus-visible {
  outline: 3px solid var(--accent-mint);
  outline-offset: 2px;
}

@media (max-width: 640px) {
  .gold-member-modal-card {
    width: min(560px, 100%);
  }

  .gold-member-compare-headings,
  .gold-member-compare-row {
    grid-template-columns: minmax(96px, 1.1fr) minmax(84px, 1fr) minmax(84px, 1fr);
    gap: 6px;
  }

  .gold-member-feature,
  .gold-member-tier,
  .gold-member-value {
    font-size: 11px;
  }
}

.supported-formats {
  margin-top: 14px;
  border: 2px solid var(--line);
  border-radius: 12px;
  background: var(--white);
  padding: 12px;
}

.supported-title,
.section-title {
  margin: 0;
  font-family: "IBM Plex Mono", "Noto Sans SC", monospace;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.supported-title {
  margin-bottom: 10px;
}

.format-grid {
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(auto-fit, minmax(72px, 1fr));
}

.format-card {
  min-height: 36px;
  width: 100%;
  position: relative;
  overflow: visible;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: 2px solid var(--line);
  border-radius: 10px;
  background: linear-gradient(135deg, #fff, #fff7fd);
  font-family: "IBM Plex Mono", "Noto Sans SC", monospace;
  font-size: 12px;
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
  padding: 0 8px;
  transition: transform 0.15s ease, background 0.15s ease, color 0.15s ease, opacity 0.15s ease;
}


.format-card:hover {
  transform: translateY(-1px);
}

.format-card:focus-visible {
  outline: 3px solid var(--accent-mint);
  outline-offset: 2px;
}

.format-card.is-active {
  background: linear-gradient(90deg, var(--accent), var(--accent-strong));
  color: var(--ink);
}

.format-card.is-disabled {
  background: #ecebe4;
  color: #66655f;
  cursor: not-allowed;
  transform: none;
}

.format-card.is-disabled[data-tooltip]::before,
.format-card.is-disabled[data-tooltip]::after {
  position: absolute;
  left: 50%;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.14s ease, transform 0.14s ease;
  z-index: 20;
}

.format-card.is-disabled[data-tooltip]::before {
  content: "";
  bottom: calc(100% + 4px);
  border: 6px solid transparent;
  border-top-color: var(--card);
  transform: translateX(-50%) translateY(2px);
}

.format-card.is-disabled[data-tooltip]::after {
  content: attr(data-tooltip);
  bottom: calc(100% + 12px);
  transform: translateX(-50%) translateY(2px);
  background: var(--card);
  color: var(--ink);
  border: 2px solid var(--line);
  padding: 6px 10px;
  border-radius: 10px;
  font-family: "Space Grotesk", "Noto Sans SC", sans-serif;
  font-size: 12px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.01em;
  white-space: nowrap;
  box-shadow: 4px 4px 0 var(--line);
}

.format-card.is-disabled[data-tooltip]:hover::before,
.format-card.is-disabled[data-tooltip]:hover::after {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.format-card-ellipsis {
  display: none;
  pointer-events: auto;
  cursor: pointer;
  background: #ecebe4;
  color: #66655f;
}

.format-card-ellipsis:hover {
  transform: none;
}
.hint {
  margin-top: 14px;
  font-family: "IBM Plex Mono", "Noto Sans SC", monospace;
  font-size: 12px;
  opacity: 0.85;
}

/* Home page */
.home-page {
  position: relative;
  overflow-x: hidden;
  background:
    linear-gradient(180deg, rgba(247, 246, 239, 0.9), rgba(247, 246, 239, 0.93)),
    url("https://lh3.googleusercontent.com/gg/AMW1TPpfOSiRgSs11VTnT9x3tufW33FRQ63v03OiVG5DTEFajzADbe41UGJ1a8MFeAVr45sACYoFUHtstgGXuX4NNCikuTHWJhsQ3cpiDQWB8ZTBu2UfRWFxnvlde2kAtHDhrZogkzxJG4lX35GKy6uKPhcOJ2b9Ajt9-Tr7JO_cV3XBGgC9_Vga0nSJ0jHu1NV-6O8NoKIvED6P_cZX5ELzJSwG8nJJm0DjitCsCLHbW-2FDMJDOIczbg_q_s_cHecCnul8LHto7Vi2jqLq_WojK0KjycnBkwXgn1Cca7oLxOrgEnY9k1tyZAbh8UbdpOvhcvhmjCtKupN-zDyEx_35Bi-l=s1024-rj?authuser=1") center / cover no-repeat;
}

.home-page::before,
.home-page::after {
  content: "";
  position: fixed;
  z-index: 0;
  pointer-events: none;
  border-radius: 999px;
  opacity: 0.45;
  animation: floatBlob 11s ease-in-out infinite;
}

.home-page::before {
  width: 420px;
  height: 420px;
  top: -120px;
  right: -140px;
  background: radial-gradient(circle at 30% 30%, #ffc5f0, transparent 70%);
}

.home-page::after {
  width: 360px;
  height: 360px;
  bottom: -120px;
  left: -120px;
  background: radial-gradient(circle at 70% 70%, var(--bg-mint), transparent 70%);
  animation-delay: -4s;
}

@keyframes floatBlob {
  0% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(18px) rotate(4deg); }
  100% { transform: translateY(0) rotate(0deg); }
}

.home-topnav {
  position: fixed;
  top: 14px;
  left: 50%;
  transform: translateX(-50%);
  width: min(1040px, calc(100% - 40px));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border: 2px solid var(--line);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(8px);
  padding: 8px 10px;
  z-index: 20;
  transition: box-shadow 0.2s ease, background 0.2s ease;
}

.home-topnav.is-scrolled {
  box-shadow: 6px 6px 0 var(--line);
  background: rgba(255, 255, 255, 0.92);
}

.home-logo {
  border: 2px solid var(--line);
  border-radius: 999px;
  background: var(--white);
  color: var(--ink);
  font: 600 12px "IBM Plex Mono", monospace;
  letter-spacing: 0.04em;
  text-decoration: none;
  padding: 6px 10px;
}

.home-topnav [data-github-stars="true"] {
  display: inline-flex;
  align-items: center;
  gap: 5.4px;
  border: 1px solid #000000;
  border-radius: 999px;
  background: #ffffff;
  color: #000000;
  text-decoration: none;
  padding: 5.4px;
  line-height: 1;
  flex-shrink: 0;
  transition: all 0.1s ease;
}

.home-topnav [data-github-stars="true"]:hover {
  background: #f3f4f6;
  transform: translate(-1.8px, -1.8px);
  box-shadow: 1.8px 1.8px 0 0 rgba(0, 0, 0, 1);
}

.home-topnav [data-github-stars="true"] svg {
  display: block;
  flex-shrink: 0;
  width: 18px;
  height: 18px;
}

.home-topnav [data-github-stars="true"] img {
  display: block;
  flex-shrink: 0;
}

.home-topnav [data-github-stars="true"] img[width="16"] {
  width: 16px;
  height: 16px;
}

.home-topnav [data-github-stars="true"] img[width="13"] {
  width: 13px;
  height: 13px;
}

.home-topnav [data-github-stars-count],
.home-topnav [data-github-stars-arrow] {
  display: inline-flex;
  align-items: center;
  gap: 5.4px;
  white-space: nowrap;
}

.home-topnav [data-github-stars-arrow].hidden {
  display: none;
}

.home-topnav [data-github-stars-count-value] {
  font-family: "IBM Plex Mono", "Noto Sans SC", monospace;
  font-size: 12px;
  line-height: 1;
  font-weight: 600;
}

.home-links {
  display: flex;
  align-items: center;
  gap: 6px;
}

.home-links a {
  border: 2px solid transparent;
  border-radius: 10px;
  color: var(--ink);
  font: 600 12px "IBM Plex Mono", monospace;
  text-decoration: none;
  padding: 6px 8px;
  transition: border-color 0.15s ease, background 0.15s ease, transform 0.15s ease;
}

.home-links a:hover {
  border-color: var(--line);
  background: var(--white);
  transform: translateY(-1px);
}

.home-links a.is-active {
  border-color: var(--line);
  background: linear-gradient(90deg, #ffd7f4, #e8ffca);
}

.home-lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  border: 2px solid var(--line);
  border-radius: 10px;
  background: var(--white);
  padding: 3px;
}

.lang-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--ink);
  font: 700 11px "IBM Plex Mono", monospace;
  line-height: 1;
  text-decoration: none;
  padding: 6px 8px;
  cursor: pointer;
}

.lang-btn.is-active {
  background: linear-gradient(90deg, #ffd7f4, #e8ffca);
}

.lang-short {
  display: none;
}

.lang-full {
  display: inline;
}

.converter-lang-switch {
  margin: 0 0 10px;
  width: fit-content;
}

.home-site {
  position: relative;
  z-index: 1;
  width: min(1080px, 100%);
  margin: 0 auto;
  padding: 0 20px 40px;
}

.home-first-screen {
  min-height: 100vh;
  display: grid;
  align-content: center;
  justify-items: start;
  gap: 18px;
  padding-top: 72px;
}

.hero-subtitle {
  margin: 0;
  font: 600 12px "IBM Plex Mono", monospace;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #2e8f19;
  animation: heroTagIn 0.45s ease-out;
}

.home-first-screen h1 {
  margin: 0;
  font-size: clamp(44px, 9vw, 96px);
  line-height: 0.9;
  max-width: 12ch;
  animation: heroTitleIn 0.55s ease-out;
}

.hero-subtext {
  margin: 0;
  max-width: 56ch;
  color: var(--ink-soft);
  font-size: clamp(15px, 2.2vw, 20px);
  line-height: 1.45;
  animation: heroTextIn 0.65s ease-out;
}

.home-actions {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  animation: heroActionsIn 0.8s ease-out;
}

@keyframes heroTagIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes heroTitleIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes heroTextIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes heroActionsIn {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

.home-shell {
  display: grid;
  gap: 14px;
  padding-bottom: 20px;
}

.home-block,
.feature-grid,
.workflow,
.formats-showcase,
.testimonials,
.sponsors,
.support-us,
.social-footer {
  border: 2px solid var(--line);
  border-radius: 16px;
  box-shadow: 8px 8px 0 var(--line);
  padding: 16px;
}

.home-block,
.feature-grid,
.workflow,
.formats-showcase,
.testimonials,
.sponsors,
.support-us {
  background: var(--card);
}

.home-intro {
  margin: 8px 0 0;
  font-size: 15px;
}

.home-stats-grid {
  margin-top: 12px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.metric-card,
.step-card,
.home-format-chip {
  border: 2px solid var(--line);
  border-radius: 12px;
  background: var(--white);
  transition: transform 0.18s ease, background 0.18s ease;
}

.metric-card {
  padding: 10px 12px;
}

.metric-value {
  margin: 0;
  font-size: 28px;
  font-weight: 700;
  line-height: 1;
}

.metric-label {
  margin: 6px 0 0;
  font: 500 12px "IBM Plex Mono", monospace;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.feature-grid > .section-title {
  grid-column: 1 / -1;
}

.feature-card {
  border: 2px solid var(--line);
  border-radius: 14px;
  background: var(--card);
  box-shadow: 8px 8px 0 var(--line);
  padding: 14px;
  transition: transform 0.18s ease;
}

.feature-title {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
}

.feature-text {
  margin: 8px 0 0;
  font-size: 14px;
}

.workflow-grid {
  margin-top: 10px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.step-card {
  padding: 10px;
}

.step-num {
  margin: 0;
  font: 700 13px "IBM Plex Mono", monospace;
  color: #2e8f19;
}

.step-title {
  margin: 8px 0 0;
  font-size: 16px;
  font-weight: 700;
}

.step-text {
  margin: 6px 0 0;
  font-size: 11px;
}

.formats-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.home-format-grid {
  margin-top: 12px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(84px, 1fr));
  gap: 8px;
}

.home-format-chip {
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--ink);
  text-decoration: none;
  font: 600 12px "IBM Plex Mono", monospace;
}

.home-format-chip:hover {
  transform: translateY(-1px);
  background: linear-gradient(90deg, #ffe3f7, #efffd7);
}

.home-format-ellipsis {
  display: none;
  pointer-events: auto;
  cursor: pointer;
  background: #ecebe4;
  color: #66655f;
}
.testimonials {
  background: linear-gradient(140deg, #fffdf6, #ffeef8 72%);
}

.testimonials-grid {
  margin-top: 12px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.testimonial-card {
  border: 2px solid var(--line);
  border-radius: 12px;
  background: var(--white);
  padding: 12px;
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "quote quote"
    "avatar author";
  align-items: center;
  gap: 8px;
  transition: transform 0.18s ease;
}

.testimonial-avatar {
  grid-area: avatar;
  width: 34px;
  height: 34px;
  border: 2px solid var(--line);
  border-radius: 999px;
  background: #f5f5f5;
  object-fit: cover;
}

.testimonial-quote {
  grid-area: quote;
  margin: 0;
  font-size: 14px;
  line-height: 1.5;
}

.testimonial-author {
  grid-area: author;
  margin: 0;
  font: 600 12px "IBM Plex Mono", monospace;
  color: var(--ink-soft);
}

.sponsors {
  background: linear-gradient(140deg, #f8fff0, #eef8ff 72%);
}

.sponsors-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.sponsors-sub {
  margin: 0;
  font-size: 13px;
  color: var(--ink-soft);
}

.sponsors-grid {
  margin-top: 12px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.sponsor-chip {
  min-height: 42px;
  width: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--line);
  border-radius: 12px;
  background: var(--white);
  color: var(--ink);
  font: 600 13px "IBM Plex Mono", monospace;
  letter-spacing: 0.02em;
  transition: transform 0.18s ease, background 0.18s ease;
}

.support-us {
  background: linear-gradient(140deg, #fff9f2, #fffde8 72%);
}

.converter-card .support-us {
  margin-top: 14px;
}

.support-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.support-layout {
  margin-top: 12px;
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 10px;
}

.support-copy,
.support-actions {
  border: 2px solid var(--line);
  border-radius: 12px;
  background: var(--white);
  padding: 12px;
}

.support-copy {
  display: grid;
  gap: 10px;
  align-content: center;
}

.support-message {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
}

.support-thanks {
  margin: 0;
  font: 600 13px "IBM Plex Mono", monospace;
  color: var(--ink-soft);
}

.support-actions {
  display: grid;
  gap: 10px;
  align-content: start;
}

.support-cta,
.support-corporate {
  min-height: 42px;
  width: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 2px solid var(--line);
  border-radius: 12px;
  text-decoration: none;
  font: 600 12px "IBM Plex Mono", monospace;
  letter-spacing: 0.01em;
  color: var(--ink);
  padding: 0 10px;
}

.support-cta {
  background: linear-gradient(90deg, #ffe3f7, #efffd7);
}

.support-benefits {
  margin: 0;
  font-size: 13px;
  line-height: 1.45;
  color: var(--ink-soft);
}

.support-once {
  border: 2px solid var(--line);
  border-radius: 12px;
  background: #fffdf6;
  padding: 10px;
}

.support-once-label {
  margin: 0;
  font: 600 12px "IBM Plex Mono", monospace;
  color: var(--ink-soft);
}

.support-price {
  margin: 6px 0 0;
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
}

.support-currency {
  font: 700 14px "IBM Plex Mono", monospace;
}

.support-amount {
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
}

.support-corporate {
  justify-content: space-between;
  background: var(--white);
}

.is-placeholder {
  pointer-events: none;
  cursor: not-allowed;
}

.social-footer {
  margin-top: 4px;
  background: #101010;
  color: #f7f7f7;
}

.social-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.social-sub {
  margin: 0;
  font-size: 13px;
  color: #d8d8d8;
}

.social-footer .section-title {
  color: #ffffff;
}

.social-links {
  margin-top: 14px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 10px;
}

.social-link {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 2px solid #ffffff;
  border-radius: 999px;
  color: #ffffff;
  text-decoration: none;
  font: 600 13px "IBM Plex Mono", monospace;
  padding: 0 14px;
  transition: background 0.15s ease, color 0.15s ease, transform 0.15s ease, border-color 0.15s ease;
}

.social-icon {
  width: 18px;
  height: 18px;
  border-radius: 4px;
  object-fit: cover;
  flex-shrink: 0;
}

.social-link:hover {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--ink);
  transform: translateY(-1px);
}

.num-roll {
  display: inline-flex;
  align-items: flex-end;
  line-height: 1;
}

.num-digit {
  width: 0.62em;
  height: 1em;
  overflow: hidden;
}

.num-digit-track {
  display: flex;
  flex-direction: column;
  transform: translateY(0);
}

.num-digit-track span {
  height: 1em;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.num-static {
  line-height: 1;
}

.num-roll-ready.is-rolling .num-digit-track {
  animation: rollDigit 1.15s cubic-bezier(0.22, 1, 0.36, 1) forwards;
  animation-delay: var(--digit-delay, 0ms);
}

@keyframes rollDigit {
  to {
    transform: translateY(calc(var(--end-index, 0) * -1em));
  }
}

#overview,
#formats,
#testimonials {
  scroll-margin-top: 92px;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.35s ease var(--reveal-delay, 0ms), transform 0.35s ease var(--reveal-delay, 0ms);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

.feature-card:hover,
.step-card:hover,
.metric-card:hover,
.testimonial-card:hover,
.sponsor-chip:hover {
  transform: translateY(-2px);
}

@media (max-width: 980px) {
  .home-first-screen h1 {
    font-size: clamp(40px, 12vw, 72px);
  }

  .home-stats-grid,
  .feature-grid,
  .testimonials-grid,
  .sponsors-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .workflow-grid {
    grid-template-columns: 1fr;
  }

  .support-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .home-topnav {
    top: 8px;
    gap: 8px;
    padding: 6px 8px;
  }

  .home-topnav [data-github-stars="true"] {
    display: none;
  }

  .home-links {
    flex: 1 1 auto;
    min-width: 0;
    gap: 4px;
    justify-content: flex-start;
    flex-wrap: nowrap;
    overflow-x: auto;
    -ms-overflow-style: none;
    scrollbar-width: none;
  }

  .home-links::-webkit-scrollbar {
    display: none;
  }

  .home-links a {
    white-space: nowrap;
    flex: 0 0 auto;
    font-size: 11px;
    padding: 5px 6px;
  }

  .home-lang-switch {
    flex-shrink: 0;
    gap: 2px;
    padding: 2px;
    margin-left: auto;
  }

  .lang-btn {
    font-size: 10px;
    padding: 5px 6px;
  }

  .lang-btn .lang-short {
    display: inline;
  }

  .lang-btn .lang-full {
    display: none;
  }

  .home-first-screen {
    padding-top: 62px;
  }

  .home-format-grid:not(.is-expanded) .home-format-chip[data-format-index]:nth-of-type(n + 26),
  .format-grid:not(.is-expanded) .format-card[data-format-index]:nth-of-type(n + 26) {
    display: none;
  }

  .home-format-grid.is-expanded .home-format-chip[data-format-index] {
    display: inline-flex;
  }

  .format-grid.is-expanded .format-card[data-format-index] {
    display: flex;
  }

  .home-format-grid:not(.is-expanded) .home-format-ellipsis,
  .format-grid:not(.is-expanded) .format-card-ellipsis {
    display: inline-flex;
  }

  .home-format-grid.is-expanded .home-format-ellipsis,
  .format-grid.is-expanded .format-card-ellipsis {
    display: none;
  }

  .sponsors-grid .sponsor-chip:nth-of-type(n + 11) {
    display: none;
  }
}

@media (max-width: 640px) {
  .card {
    padding: 20px;
    box-shadow: 6px 6px 0 var(--line);
  }

  .close-home-btn {
    top: 10px;
    right: 10px;
    width: 32px;
    height: 32px;
  }

  .home-site {
    padding: 0 14px 30px;
  }

  .home-topnav {
    width: calc(100% - 28px);
  }

  .home-topnav [data-github-stars-count] img {
    width: 13px;
    height: 13px;
  }

  .home-topnav [data-github-stars-count-value] {
    font-size: 11px;
  }

  .home-first-screen {
    min-height: 100svh;
    gap: 14px;
  }

  .home-first-screen h1 {
    font-size: clamp(34px, 13vw, 54px);
    max-width: 10ch;
  }

  .hero-subtext {
    font-size: 15px;
  }

  .home-shell {
    gap: 10px;
  }

  .home-block,
  .feature-grid,
  .feature-card,
  .workflow,
  .formats-showcase,
  .testimonials,
  .sponsors,
  .support-us,
  .social-footer {
    box-shadow: 5px 5px 0 var(--line);
  }

  .home-stats-grid,
  .feature-grid,
  .workflow-grid,
  .testimonials-grid,
  .sponsors-grid,
  .support-layout,
  .social-links {
    grid-template-columns: 1fr;
  }

  .file-picker {
    flex-direction: column;
    align-items: stretch;
  }

  .file-picker-btn {
    width: 100%;
  }

  .file-picker-name {
    white-space: normal;
    overflow-wrap: anywhere;
  }

  .home-actions {
    flex-direction: column;
    width: 100%;
  }

  .primary-link,
  .secondary-link {
    width: 100%;
  }

  .formats-head,
  .social-head,
  .sponsors-head,
  .support-head {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}


.conversion-type-group {
  display: flex;
  width: 100%;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 10px;
  justify-content: center;
  align-items: center;
}

.conversion-type-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 2px solid var(--line);
  border-radius: 999px;
  background: var(--white);
  font: 600 13px "IBM Plex Mono", monospace;
  cursor: pointer;
  user-select: none;
}

.conversion-type-chip input[type="checkbox"] {
  margin: 0;
  accent-color: #111;
}

.conversion-type-hint {
  margin: 2px 0 0;
  font-size: 12px;
  color: var(--ink-soft);
}


.support-once-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.support-price-input {
  min-width: 0;
  flex: 1 1 120px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 2px solid var(--line);
  border-radius: 12px;
  background: var(--white);
  padding: 10px 12px;
}

.support-amount-input {
  width: 100%;
  min-width: 0;
  border: 0;
  outline: none;
  background: transparent;
  font-size: 24px;
  font-weight: 700;
  line-height: 1;
  color: var(--ink);
}

.support-amount-input::-webkit-outer-spin-button,
.support-amount-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.support-amount-input[type="number"] {
  -moz-appearance: textfield;
}

.support-once-cta {
  flex: 0 0 auto;
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 16px;
  border: 2px solid var(--line);
  border-radius: 12px;
  background: linear-gradient(90deg, #f6ffc7, #ffd9f8);
  color: var(--ink);
  text-decoration: none;
  font-weight: 700;
}


/* Converter card embedded in home page */
.home-converter-card {
  width: 100%;
  max-width: 100%;
  margin: 0;
  border: 2px solid var(--line);
  border-radius: 16px;
  box-shadow: 8px 8px 0 var(--line);
}
.home-converter-card .converter-lang-switch {
  display: none;
}
.home-converter-card h2.section-title {
  margin-bottom: 4px;
}