:root {
  --bg: #f5f7fb;
  --panel: #ffffff;
  --panel-2: #f1f4f9;
  --accent: #1fd0ff;
  --accent-2: #5b5dff;
  --text: #0f172a;
  --muted: #64748b;
  --shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
  --radius: 18px;
  --page-bg: radial-gradient(circle at top, #e9f2ff 0%, #f5f7fb 45%, #fdfcff 100%);
  --orb-1: radial-gradient(circle, rgba(91, 93, 255, 0.25), transparent 65%);
  --orb-2: radial-gradient(circle, rgba(31, 208, 255, 0.25), transparent 65%);
}

[data-theme="dark"] {
  --bg: #0b1016;
  --panel: #121821;
  --panel-2: #151d27;
  --accent: #1fd0ff;
  --accent-2: #8c7bff;
  --text: #f5f7fa;
  --muted: #a7b0bb;
  --shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
  --page-bg: radial-gradient(circle at top, #1b2432 0%, #0b1016 55%, #090d12 100%);
  --orb-1: radial-gradient(circle, rgba(31, 208, 255, 0.25), transparent 65%);
  --orb-2: radial-gradient(circle, rgba(140, 123, 255, 0.25), transparent 65%);
}

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

body {
  font-family: "Archivo", system-ui, sans-serif;
  background: var(--page-bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
}

section {
  content-visibility: auto;
  contain-intrinsic-size: 1px 800px;
}

.orb {
  position: fixed;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  filter: blur(6px);
  opacity: 0.45;
  pointer-events: none;
  z-index: 0;
}

.orb-1 {
  background: var(--orb-1);
  top: -120px;
  right: -60px;
}

.orb-2 {
  background: var(--orb-2);
  bottom: -140px;
  left: -80px;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 8vw;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(12px);
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: "Chakra Petch", sans-serif;
  font-weight: 700;
}

.logo-mark {
  width: 26px;
  height: 26px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #ffffff;
  display: grid;
  place-items: center;
  font-size: 18px;
}

.nav {
  display: flex;
  gap: 22px;
}

.nav a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 500;
}

.nav a:hover {
  color: var(--text);
}

.lang-switch {
  display: flex;
  gap: 8px;
  background: color-mix(in srgb, var(--text) 6%, transparent);
  padding: 4px;
  border-radius: 999px;
}

.lang-btn {
  background: transparent;
  border: none;
  color: var(--muted);
  padding: 6px 12px;
  border-radius: 999px;
  cursor: pointer;
  font-weight: 600;
}

.lang-btn.active {
  background: color-mix(in srgb, var(--accent-2) 18%, transparent);
  color: var(--text);
}

.theme-toggle {
  margin-left: 12px;
  border: 1px solid color-mix(in srgb, var(--text) 16%, transparent);
  background: var(--panel-2);
  color: var(--text);
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
}

main {
  position: relative;
  z-index: 1;
}

.hero {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 40px;
  padding: 80px 8vw 60px;
  align-items: center;
}

.hero-left h1 {
  font-size: clamp(32px, 4vw, 52px);
  line-height: 1.1;
  margin: 16px 0 18px;
}

.hero-left p {
  color: var(--muted);
  font-size: 18px;
  max-width: 520px;
}

.subline {
  margin-top: -6px;
  color: var(--muted);
  font-size: 16px;
  font-weight: 600;
}

.pill {
  display: inline-flex;
  padding: 8px 14px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--accent-2) 10%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent-2) 20%, transparent);
  font-size: 13px;
  color: var(--muted);
}

.hero-cta {
  display: flex;
  gap: 14px;
  margin: 28px 0 20px;
  flex-wrap: wrap;
}


.card {
  background: var(--panel);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  border: 1px solid color-mix(in srgb, var(--text) 8%, transparent);
}

.card-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  color: var(--muted);
}

.chip {
  padding: 4px 10px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 18%, transparent);
  color: var(--text);
  font-size: 12px;
}

.preview-card {
  background: linear-gradient(160deg, color-mix(in srgb, var(--panel) 96%, transparent), color-mix(in srgb, var(--panel-2) 94%, transparent));
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-cloud span {
  padding: 6px 12px;
  background: color-mix(in srgb, var(--accent-2) 12%, transparent);
  border-radius: 999px;
  font-size: 12px;
}

.ad-banner {
  margin-top: 16px;
  padding: 12px;
  border: 1px dashed color-mix(in srgb, var(--text) 16%, transparent);
  border-radius: 10px;
  text-align: center;
  color: var(--muted);
  font-size: 12px;
  min-height: 90px;
}

.section-head {
  padding: 0 8vw;
  margin-bottom: 20px;
}

.section-head h2 {
  font-size: clamp(24px, 3vw, 36px);
  margin-bottom: 8px;
}

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

.generator {
  padding: 0 0 80px;
}

.generator-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  padding: 0 8vw;
}

.upload-box {
  position: relative;
  padding: 30px;
  border-radius: 16px;
  background: color-mix(in srgb, var(--accent-2) 6%, transparent);
  border: 1px dashed color-mix(in srgb, var(--accent-2) 24%, transparent);
  text-align: center;
  display: grid;
  gap: 8px;
  cursor: pointer;
}

.upload-box input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.upload-icon {
  font-size: 22px;
}

.upload-meta {
  margin-top: 12px;
  color: var(--muted);
  font-size: 13px;
}

.form-card,
.upload-card {
  display: grid;
  gap: 16px;
}

.form-row {
  display: grid;
  gap: 8px;
  font-size: 14px;
  color: var(--muted);
}

.form-row input,
.form-row select {
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid color-mix(in srgb, var(--text) 16%, transparent);
  background: color-mix(in srgb, var(--panel) 96%, transparent);
  color: var(--text);
}

.form-row textarea {
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid color-mix(in srgb, var(--text) 16%, transparent);
  background: color-mix(in srgb, var(--panel) 96%, transparent);
  color: var(--text);
  resize: vertical;
}

.preset-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.preset-btn {
  background: color-mix(in srgb, var(--panel-2) 96%, transparent);
  color: var(--text);
  border: 1px solid color-mix(in srgb, var(--text) 12%, transparent);
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 12px;
  cursor: pointer;
}

.preset-btn.active {
  background: color-mix(in srgb, var(--accent) 20%, transparent);
  border-color: color-mix(in srgb, var(--accent) 40%, transparent);
}

.form-note {
  color: var(--muted);
  font-size: 12px;
  text-align: center;
}

.results-card {
  margin: 20px 8vw 0;
}

.results {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.results span {
  background: color-mix(in srgb, var(--accent) 20%, transparent);
  color: var(--text);
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 12px;
}

.results span.core {
  border: 1px solid color-mix(in srgb, var(--accent-2) 50%, transparent);
}

.results span.longtail {
  background: color-mix(in srgb, var(--accent-2) 16%, transparent);
}

.results span.discover {
  background: color-mix(in srgb, var(--accent) 14%, transparent);
}

.results span.fresh {
  background: color-mix(in srgb, var(--accent) 24%, transparent);
}

.mode-panel {
  margin-top: 16px;
  display: grid;
  gap: 10px;
}

.mode-label {
  font-size: 13px;
  color: var(--muted);
  font-weight: 600;
}

.mode-toggle {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.mode-btn {
  border: 1px solid color-mix(in srgb, var(--text) 12%, transparent);
  background: var(--panel-2);
  color: var(--text);
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 12px;
  cursor: pointer;
}

.mode-btn.active {
  background: color-mix(in srgb, var(--accent-2) 20%, transparent);
  border-color: color-mix(in srgb, var(--accent-2) 40%, transparent);
}

.mode-hint {
  color: var(--muted);
  font-size: 12px;
}

.wow-preset {
  margin-top: 12px;
  display: grid;
  gap: 10px;
}

.wow-grid {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.wow-chip {
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 12px;
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 22%, transparent);
}

.wow-chip.core {
  background: color-mix(in srgb, var(--accent-2) 16%, transparent);
}

.wow-chip.longtail {
  background: color-mix(in srgb, var(--accent-2) 10%, transparent);
}

.wow-chip.discover {
  background: color-mix(in srgb, var(--accent) 10%, transparent);
}

.wow-chip.fresh {
  background: color-mix(in srgb, var(--accent) 20%, transparent);
}

.legend {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}

.legend-chip {
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  border: 1px solid color-mix(in srgb, var(--text) 14%, transparent);
}

.legend-chip.match {
  background: color-mix(in srgb, var(--accent-2) 18%, transparent);
}

.legend-chip.rare {
  background: color-mix(in srgb, var(--accent) 18%, transparent);
}

.results-actions {
  display: flex;
  gap: 12px;
  margin-top: 16px;
  flex-wrap: wrap;
}

.insight,
.guide {
  padding: 0 0 80px;
}

.insight-grid,
.guide-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  padding: 0 8vw;
}

.cases {
  padding: 0 0 80px;
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
  padding: 0 8vw;
}

.case-card {
  display: grid;
  gap: 10px;
}

.case-note {
  color: var(--muted);
  font-size: 13px;
}

.case-block {
  display: grid;
  gap: 6px;
}

.case-label {
  font-size: 12px;
  color: var(--muted);
  font-weight: 600;
}

.case-tags {
  background: color-mix(in srgb, var(--panel-2) 96%, transparent);
  border: 1px solid color-mix(in srgb, var(--text) 10%, transparent);
  border-radius: 12px;
  padding: 10px 12px;
  font-size: 12px;
  line-height: 1.5;
}

.case-dynamic {
  margin: 20px 8vw 0;
  display: grid;
  gap: 12px;
}

.case-dynamic-head {
  display: grid;
  gap: 6px;
}

.case-dynamic-head p {
  color: var(--muted);
  font-size: 13px;
}

.template-actions {
  display: flex;
  gap: 12px;
  margin-top: 14px;
  flex-wrap: wrap;
}

.bench {
  padding: 0 0 80px;
}


.bench-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  padding: 0 8vw;
}

.bench-result ul {
  display: grid;
  gap: 10px;
  color: var(--muted);
  list-style: none;
}

.bench-tag {
  display: inline-flex;
  align-items: center;
  margin-left: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  color: var(--text);
}

.bench-tag.match {
  background: color-mix(in srgb, var(--accent-2) 18%, transparent);
}

.bench-tag.rare {
  background: color-mix(in srgb, var(--accent) 18%, transparent);
}


.faq {
  padding: 0 8vw 80px;
}

.faq-list {
  display: grid;
  gap: 18px;
}

.faq-list p {
  color: var(--muted);
  margin-top: 6px;
}

.footer {
  padding: 40px 8vw 60px;
  border-top: 1px solid color-mix(in srgb, var(--text) 12%, transparent);
  color: var(--muted);
}

.footer-meta {
  margin-top: 10px;
  display: grid;
  gap: 6px;
  font-size: 12px;
}

.btn {
  border: none;
  padding: 12px 20px;
  border-radius: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn.full {
  width: 100%;
}

.btn.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #ffffff;
  box-shadow: 0 12px 24px rgba(91, 93, 255, 0.25);
}

.btn.ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid color-mix(in srgb, var(--text) 18%, transparent);
}

.btn:hover {
  transform: translateY(-2px);
}

.toast {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background: var(--panel-2);
  padding: 14px 18px;
  border-radius: 12px;
  border: 1px solid color-mix(in srgb, var(--accent) 45%, transparent);
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.2s ease, transform 0.2s ease;
  z-index: 20;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 900px) {
  .topbar {
    flex-direction: column;
    gap: 16px;
  }

  .nav {
    flex-wrap: wrap;
    justify-content: center;
  }
}