:root {
  color-scheme: light;
  --red: #ff2442;
  --ink: #171113;
  --muted: #6e6266;
  --line: #eadfe2;
  --soft: #fff4f6;
  --paper: #fffaf8;
  --card: #ffffff;
  --shadow: 0 22px 70px rgba(89, 24, 36, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 15% 5%, rgba(255, 36, 66, 0.14), transparent 28rem),
    linear-gradient(180deg, #fff 0%, var(--paper) 68%, #fff 100%);
  color: var(--ink);
  font-family: ui-serif, "Songti SC", "Noto Serif SC", Georgia, serif;
}

a {
  color: inherit;
}

.shell {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(18px);
  background: rgba(255, 250, 248, 0.84);
  border-bottom: 1px solid rgba(234, 223, 226, 0.8);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  letter-spacing: -0.04em;
  text-decoration: none;
}

.brand-logo,
.mark {
  width: 36px;
  height: 36px;
  flex: 0 0 36px;
  border-radius: 14px;
  box-shadow: 0 12px 26px rgba(255, 36, 66, 0.25);
}

.mark {
  display: grid;
  place-items: center;
  background: var(--red);
  color: #fff;
}

.links {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 14px;
}

.links a {
  padding: 9px 12px;
  border-radius: 999px;
  color: var(--muted);
  text-decoration: none;
}

.links a[aria-current="page"],
.links a:hover {
  background: var(--soft);
  color: var(--red);
}

.links .nav-cta {
  gap: 8px;
  background: var(--red);
  color: #fff;
  box-shadow: 0 10px 24px rgba(255, 36, 66, 0.2);
}

.links .nav-cta:hover {
  background: #e51d38;
  color: #fff;
}

.hero {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 46px;
  align-items: center;
  padding: 76px 0 56px;
}

.eyebrow {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  padding: 7px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--red);
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 13px;
  font-weight: 700;
}

h1 {
  max-width: 760px;
  margin: 22px 0 18px;
  font-size: clamp(42px, 7vw, 86px);
  line-height: 0.92;
  letter-spacing: -0.075em;
}

.lead {
  max-width: 660px;
  color: var(--muted);
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 19px;
  line-height: 1.8;
}

.feature-list {
  display: grid;
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  color: var(--ink);
  font-family: ui-sans-serif, system-ui, sans-serif;
}

.feature-list li {
  display: flex;
  gap: 10px;
  align-items: center;
}

.feature-list li::before {
  content: "";
  width: 8px;
  height: 8px;
  flex: 0 0 8px;
  border-radius: 50%;
  background: var(--red);
  box-shadow: 0 0 0 6px rgba(255, 36, 66, 0.1);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: var(--ink);
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-weight: 800;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.button:hover:not(:disabled):not(.disabled) {
  transform: translateY(-1px);
}

.button:disabled,
.button.disabled {
  cursor: not-allowed;
  opacity: 0.48;
  transform: none;
}

.button.primary {
  border-color: var(--red);
  background: var(--red);
  color: #fff;
  box-shadow: 0 14px 32px rgba(255, 36, 66, 0.22);
}

.panel {
  border: 1px solid var(--line);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.78);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.mock-window {
  padding: 18px;
}

.dots {
  display: flex;
  gap: 7px;
  margin-bottom: 18px;
}

.dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #f3c4cc;
}

.metric-grid,
.cards {
  display: grid;
  gap: 16px;
}

.metric-grid {
  grid-template-columns: repeat(3, 1fr);
}

.metric,
.card {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: #fff;
}

.metric strong {
  display: block;
  font-size: 30px;
  line-height: 1;
}

.metric span,
.card p {
  color: var(--muted);
  font-family: ui-sans-serif, system-ui, sans-serif;
  line-height: 1.7;
}

.section {
  padding: 42px 0;
}

.section-title {
  margin: 0 0 18px;
  font-size: clamp(30px, 4vw, 52px);
  line-height: 1;
  letter-spacing: -0.055em;
}

.cards {
  grid-template-columns: repeat(3, 1fr);
}

.card h3 {
  margin: 0 0 8px;
  font-size: 22px;
}

.form {
  display: grid;
  gap: 14px;
  padding: 22px;
}

.hero-tool {
  grid-template-columns: minmax(0, 0.9fr) minmax(420px, 1.1fr);
}

.tool-panel {
  display: grid;
  gap: 14px;
  padding: 24px;
}

.video-tool-card {
  align-self: start;
}

.tool-panel-header h2 {
  margin: 12px 0 8px;
  font-size: 28px;
  line-height: 1.05;
  letter-spacing: -0.04em;
}

.tool-panel-header p,
.status-line {
  margin: 0;
  color: var(--muted);
  font-family: ui-sans-serif, system-ui, sans-serif;
  line-height: 1.7;
}

.compact-actions {
  margin-top: 0;
}

.input-actions {
  justify-content: flex-start;
}

.compact-actions .button {
  min-height: 42px;
  padding: 0 14px;
  font-size: 13px;
}

.large-input {
  min-height: 220px;
  font-size: 16px;
  line-height: 1.7;
}

.result-panel {
  display: grid;
  gap: 10px;
  padding-top: 4px;
}

.status-line {
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.72);
}

.status-line.is-error {
  border-color: #ffc2cc;
  background: #fff1f3;
  color: #c80f2d;
}

.status-line.is-success {
  border-color: #b8ead0;
  background: #effcf5;
  color: #187249;
}

.result-textarea {
  min-height: 190px;
}

.hidden {
  display: none !important;
}

.feature-cards {
  align-items: stretch;
}

.feature-card {
  display: flex;
  min-height: 250px;
  flex-direction: column;
  align-items: flex-start;
}

.feature-card p {
  flex: 1;
}

.feature-card.is-primary {
  background:
    radial-gradient(circle at 20% 0%, rgba(255, 36, 66, 0.16), transparent 18rem),
    #fff;
}

.muted-card {
  background: rgba(255, 255, 255, 0.62);
}

.section-heading {
  max-width: 820px;
  margin-bottom: 18px;
}

.plugin-section {
  padding-bottom: 72px;
}

.note-line {
  margin: 18px 0 0;
  color: var(--muted);
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 14px;
}

.plugin-cards {
  grid-template-columns: repeat(3, 1fr);
}

textarea,
input,
select {
  width: 100%;
  min-height: 48px;
  padding: 14px 15px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #fff;
  color: var(--ink);
  font: 15px ui-sans-serif, system-ui, sans-serif;
}

textarea {
  min-height: 160px;
  resize: vertical;
}

.result-box {
  min-height: 160px;
  padding: 18px;
  border: 1px dashed #e5b5bd;
  border-radius: 20px;
  background: var(--soft);
  color: var(--muted);
  font-family: ui-sans-serif, system-ui, sans-serif;
  line-height: 1.8;
}

.price {
  font-size: 42px;
  font-weight: 900;
  letter-spacing: -0.05em;
}

.task-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: center;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fff;
  font-family: ui-sans-serif, system-ui, sans-serif;
}

.badge {
  display: inline-flex;
  width: max-content;
  align-items: center;
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--soft);
  color: var(--red);
  font-size: 12px;
  font-weight: 800;
}

footer {
  padding: 40px 0 60px;
  color: var(--muted);
  font-family: ui-sans-serif, system-ui, sans-serif;
}

@media (max-width: 820px) {
  .hero,
  .hero-tool,
  .cards,
  .metric-grid,
  .plugin-cards {
    grid-template-columns: 1fr;
  }

  .nav-inner {
    align-items: flex-start;
    flex-direction: column;
    gap: 14px;
    padding: 16px 0;
  }

  .links {
    flex-wrap: wrap;
  }
}