:root {
  --ink: #101114;
  --muted: #666a73;
  --paper: #f7f3ea;
  --panel: #fffdf8;
  --line: #d9d2c4;
  --acid: #c6ff3d;
  --coral: #ff5f45;
  --blue: #335cff;
  --sage: #98b59d;
  --shadow: 0 24px 80px rgba(16, 17, 20, 0.16);
  --soft-shadow: 0 12px 32px rgba(16, 17, 20, 0.1);
  --radius: 8px;
  --font-body: "Manrope", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-display: "Instrument Serif", "Songti SC", serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    linear-gradient(90deg, rgba(16, 17, 20, 0.035) 1px, transparent 1px),
    linear-gradient(rgba(16, 17, 20, 0.035) 1px, transparent 1px),
    var(--paper);
  background-size: 42px 42px;
  color: var(--ink);
  font-family: var(--font-body);
  letter-spacing: 0;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

a {
  color: inherit;
  text-decoration: none;
}

.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 80;
  opacity: 0.25;
  background-image: radial-gradient(rgba(16, 17, 20, 0.24) 0.7px, transparent 0.7px);
  background-size: 4px 4px;
  mix-blend-mode: multiply;
}

.site-header {
  align-items: center;
  backdrop-filter: blur(18px);
  background: rgba(247, 243, 234, 0.83);
  border-bottom: 1px solid var(--line);
  display: grid;
  gap: 18px;
  grid-template-columns: auto 1fr auto;
  left: 0;
  min-height: 72px;
  padding: 14px clamp(16px, 4vw, 48px);
  position: sticky;
  right: 0;
  top: 0;
  z-index: 50;
}

.brand {
  align-items: center;
  display: inline-flex;
  font-weight: 800;
  gap: 10px;
}

.brand-mark {
  align-items: center;
  aspect-ratio: 1;
  background: var(--ink);
  border-radius: 7px;
  color: var(--acid);
  display: inline-flex;
  font-size: 13px;
  justify-content: center;
  width: 34px;
}

.desktop-nav,
.site-footer nav {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center;
}

.desktop-nav a,
.site-footer a {
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.desktop-nav a:hover,
.site-footer a:hover {
  color: var(--ink);
}

.header-actions {
  align-items: center;
  display: flex;
  gap: 10px;
  justify-content: flex-end;
}

.mobile-nav {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--soft-shadow);
  display: none;
  grid-column: 1 / -1;
  padding: 12px;
}

.mobile-nav.open {
  display: grid;
  gap: 8px;
}

.mobile-nav a {
  border-radius: 6px;
  font-weight: 800;
  padding: 12px;
}

.mobile-nav a:hover {
  background: #eee6d7;
}

.primary-button,
.ghost-button,
.icon-button,
.text-button,
.chip,
.mode-tab,
.billing-toggle button {
  align-items: center;
  border: 1px solid var(--ink);
  border-radius: 7px;
  display: inline-flex;
  gap: 8px;
  justify-content: center;
  min-height: 42px;
  transition:
    transform 0.18s ease,
    box-shadow 0.18s ease,
    background 0.18s ease,
    color 0.18s ease;
}

.primary-button {
  background: var(--ink);
  box-shadow: 4px 4px 0 var(--acid);
  color: white;
  font-weight: 800;
  padding: 0 18px;
}

.primary-button:hover {
  transform: translate(-2px, -2px);
  box-shadow: 7px 7px 0 var(--acid);
}

.primary-button.compact {
  min-height: 38px;
}

.ghost-button,
.icon-button,
.text-button,
.chip,
.mode-tab,
.billing-toggle button {
  background: rgba(255, 253, 248, 0.75);
  color: var(--ink);
  font-weight: 800;
}

.ghost-button {
  padding: 0 13px;
}

.icon-button {
  aspect-ratio: 1;
  min-height: 40px;
  padding: 0;
  width: 40px;
}

.text-button {
  background: transparent;
  border-color: transparent;
  min-height: 30px;
  padding: 0 4px;
}

.ghost-button:hover,
.icon-button:hover,
.mode-tab:hover,
.chip:hover,
.billing-toggle button:hover {
  background: var(--acid);
}

.menu-button {
  display: none;
}

i[data-lucide] {
  flex: 0 0 auto;
  height: 18px;
  stroke-width: 2.2;
  width: 18px;
}

.hero {
  display: grid;
  gap: clamp(24px, 4vw, 54px);
  grid-template-columns: minmax(280px, 0.72fr) minmax(620px, 1.28fr);
  min-height: calc(100vh - 72px);
  padding: clamp(36px, 5vw, 70px) clamp(16px, 4vw, 48px) 44px;
}

.hero-copy {
  align-self: center;
  position: sticky;
  top: 110px;
}

.eyebrow {
  color: var(--coral);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.14em;
  margin: 0 0 10px;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2 {
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: 0;
  line-height: 0.94;
}

h1 {
  font-size: clamp(54px, 7vw, 108px);
  margin-bottom: 24px;
  max-width: 760px;
}

h2 {
  font-size: clamp(38px, 5vw, 74px);
  margin-bottom: 14px;
}

h3 {
  font-size: 18px;
  line-height: 1.25;
  margin-bottom: 9px;
}

p {
  color: var(--muted);
  line-height: 1.72;
}

.hero-lede {
  font-size: 18px;
  max-width: 600px;
}

.hero-metrics {
  display: grid;
  gap: 10px;
  margin-top: 32px;
}

.hero-metrics span {
  align-items: baseline;
  background: rgba(255, 253, 248, 0.8);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  display: flex;
  gap: 10px;
  justify-content: space-between;
  max-width: 360px;
  padding: 12px 14px;
}

.hero-metrics strong {
  font-family: var(--font-display);
  font-size: 34px;
  font-weight: 400;
}

.studio-panel {
  align-self: start;
  background: var(--panel);
  border: 1px solid var(--ink);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: grid;
  gap: 18px;
  grid-template-columns: minmax(300px, 0.9fr) minmax(300px, 1.1fr);
  padding: clamp(14px, 2vw, 22px);
  position: relative;
}

.panel-topbar {
  align-items: center;
  border-bottom: 1px solid var(--line);
  display: flex;
  grid-column: 1 / -1;
  justify-content: space-between;
  padding-bottom: 16px;
}

.panel-topbar h2,
.result-header h3 {
  font-family: var(--font-body);
  font-size: 22px;
  font-weight: 800;
  line-height: 1.1;
  margin: 0;
}

.credit-pill {
  align-items: center;
  background: var(--acid);
  border: 1px solid var(--ink);
  border-radius: 999px;
  display: inline-flex;
  gap: 8px;
  padding: 9px 13px;
}

.mode-tabs {
  display: grid;
  gap: 8px;
  grid-column: 1 / -1;
  grid-template-columns: repeat(3, 1fr);
}

.mode-tab {
  border-color: var(--line);
  min-width: 0;
  padding: 0 10px;
}

.mode-tab.active,
.chip.active,
.billing-toggle button.active {
  background: var(--ink);
  border-color: var(--ink);
  color: white;
}

.generator-form {
  display: grid;
  gap: 14px;
}

.field-label,
.settings-grid span,
.video-settings span {
  color: var(--ink);
  display: block;
  font-size: 12px;
  font-weight: 800;
  margin-bottom: 8px;
  text-transform: uppercase;
}

.prompt-shell,
.upload-zone,
.result-panel,
.video-console {
  background: #f8f1e3;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

textarea,
select,
input[type="number"],
input[type="search"] {
  background: #fffdf8;
  border: 1px solid var(--line);
  border-radius: 7px;
  color: var(--ink);
  outline: none;
  width: 100%;
}

textarea:focus,
select:focus,
input:focus {
  border-color: var(--ink);
  box-shadow: 0 0 0 3px rgba(198, 255, 61, 0.55);
}

.prompt-shell textarea {
  background: transparent;
  border: 0;
  min-height: 172px;
  padding: 16px;
  resize: vertical;
}

.prompt-footer {
  align-items: center;
  border-top: 1px solid var(--line);
  color: var(--muted);
  display: flex;
  font-size: 13px;
  justify-content: space-between;
  padding: 8px 12px;
}

.upload-zone {
  position: relative;
}

.upload-zone input {
  inline-size: 1px;
  opacity: 0;
  pointer-events: none;
  position: absolute;
}

.upload-zone label {
  align-items: center;
  cursor: pointer;
  display: grid;
  gap: 4px;
  justify-items: center;
  padding: 18px 12px;
  text-align: center;
}

.upload-zone label span {
  font-weight: 800;
}

.upload-zone small {
  color: var(--muted);
}

.upload-preview {
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(4, 1fr);
  padding: 0 12px 12px;
}

.upload-preview:empty {
  display: none;
}

.upload-thumb {
  aspect-ratio: 1;
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
  position: relative;
}

.upload-thumb img {
  height: 100%;
  object-fit: cover;
  width: 100%;
}

.settings-grid,
.video-settings,
.advanced-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(2, 1fr);
}

select,
input[type="number"] {
  min-height: 42px;
  padding: 0 12px;
}

.advanced-options {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.advanced-options summary {
  align-items: center;
  cursor: pointer;
  display: flex;
  font-weight: 800;
  justify-content: space-between;
  list-style: none;
  padding: 12px;
}

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

.advanced-options summary span {
  align-items: center;
  display: inline-flex;
  gap: 8px;
}

.advanced-grid {
  border-top: 1px solid var(--line);
  padding: 12px;
}

.toggle-row {
  align-items: center;
  display: flex;
  gap: 9px;
}

.toggle-row input {
  accent-color: var(--ink);
  height: 18px;
  width: 18px;
}

.toggle-row span {
  margin: 0;
  text-transform: none;
}

.cost-row {
  align-items: center;
  display: flex;
  gap: 14px;
  justify-content: space-between;
}

.cost-row > span {
  color: var(--muted);
}

.result-panel {
  display: flex;
  flex-direction: column;
  min-height: 600px;
  padding: 14px;
}

.result-header {
  align-items: center;
  display: flex;
  justify-content: space-between;
}

.result-actions {
  display: flex;
  gap: 8px;
}

.progress-wrap {
  background: #e9dfce;
  border: 1px solid var(--line);
  border-radius: 999px;
  margin: 14px 0;
  min-height: 28px;
  overflow: hidden;
  position: relative;
}

.progress-bar {
  background: var(--acid);
  bottom: 0;
  left: 0;
  position: absolute;
  top: 0;
  transition: width 0.28s ease;
  width: 0;
}

.progress-wrap span {
  align-items: center;
  display: flex;
  font-size: 12px;
  font-weight: 800;
  inset: 0;
  justify-content: center;
  position: absolute;
}

.hidden {
  display: none !important;
}

.result-grid {
  display: grid;
  flex: 1;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  margin-top: 14px;
}

.empty-state {
  align-items: center;
  border: 1px dashed #b7ad9c;
  border-radius: var(--radius);
  color: var(--muted);
  display: grid;
  gap: 12px;
  grid-column: 1 / -1;
  justify-items: center;
  padding: 40px 20px;
  text-align: center;
}

.empty-state p {
  max-width: 320px;
}

.result-card {
  background: #fffdf8;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.result-card img {
  aspect-ratio: 1;
  display: block;
  object-fit: cover;
  width: 100%;
}

.result-card-footer {
  align-items: flex-start;
  display: flex;
  flex-direction: column;
  gap: 8px;
  justify-content: space-between;
  padding: 10px;
}

.result-card-footer span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}

.result-card-footer div {
  display: flex;
  gap: 6px;
  justify-content: flex-end;
  width: 100%;
}

.result-card-footer .icon-button {
  min-height: 32px;
  width: 32px;
}

.section {
  padding: clamp(64px, 9vw, 110px) clamp(16px, 4vw, 48px);
}

.section-heading {
  align-items: end;
  display: flex;
  gap: 24px;
  justify-content: space-between;
  margin-bottom: 28px;
}

.section-heading p {
  max-width: 650px;
}

.split-section {
  align-items: start;
  display: grid;
  gap: 32px;
  grid-template-columns: minmax(260px, 0.75fr) minmax(360px, 1.25fr);
}

.video-console {
  border-color: var(--ink);
  box-shadow: var(--soft-shadow);
  display: grid;
  gap: 14px;
  padding: 16px;
}

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

.video-console textarea {
  min-height: 160px;
  padding: 14px;
  resize: vertical;
}

.video-settings {
  grid-template-columns: repeat(4, 1fr);
}

input[type="range"] {
  accent-color: var(--ink);
  width: 100%;
}

.video-output {
  align-items: center;
  background: #17181d;
  border-radius: var(--radius);
  color: white;
  display: flex;
  gap: 12px;
  min-height: 90px;
  padding: 18px;
}

.search-box {
  align-items: center;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 999px;
  display: flex;
  gap: 8px;
  max-width: 360px;
  padding: 0 12px;
  width: 100%;
}

.search-box input {
  background: transparent;
  border: 0;
  min-height: 44px;
}

.filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 22px;
}

.chip {
  min-height: 36px;
  padding: 0 14px;
}

.template-grid,
.workflow-grid,
.pricing-grid,
.blog-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.template-card,
.workflow-grid article,
.pricing-card,
.blog-grid article,
.faq-item,
.testimonial-card,
.capability-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.template-card {
  display: flex;
  flex-direction: column;
  min-height: 360px;
  overflow: hidden;
}

.template-visual {
  align-items: end;
  aspect-ratio: 16 / 10;
  background: var(--template-bg);
  border-bottom: 1px solid var(--line);
  display: flex;
  padding: 12px;
  position: relative;
}

.template-visual::before {
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.52), transparent),
    radial-gradient(circle at 75% 30%, rgba(255, 255, 255, 0.55), transparent 24%);
  content: "";
  inset: 0;
  position: absolute;
}

.template-visual span {
  background: rgba(255, 253, 248, 0.78);
  border: 1px solid rgba(16, 17, 20, 0.35);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 800;
  padding: 6px 10px;
  position: relative;
}

.template-body {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 16px;
}

.template-body p {
  display: -webkit-box;
  flex: 1;
  overflow: hidden;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 4;
}

.card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.card-actions .ghost-button,
.card-actions .primary-button {
  min-height: 36px;
  padding: 0 12px;
}

.workflow-grid article,
.blog-grid article {
  padding: 22px;
}

.workflow-grid article i {
  color: var(--coral);
  height: 24px;
  margin-bottom: 18px;
  width: 24px;
}

.capability-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: 1.25fr repeat(2, 1fr);
}

.capability-card {
  min-height: 230px;
  padding: 22px;
  position: relative;
  overflow: hidden;
}

.capability-card.wide {
  background: #17181d;
  color: white;
  grid-row: span 2;
}

.capability-card.wide p {
  color: rgba(255, 255, 255, 0.72);
}

.capability-card i {
  background: var(--acid);
  border: 1px solid var(--ink);
  border-radius: 7px;
  height: 40px;
  margin-bottom: 28px;
  padding: 9px;
  width: 40px;
}

.visual-stack {
  height: 280px;
  margin-bottom: 20px;
  position: relative;
}

.visual-stack span {
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: var(--radius);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
  position: absolute;
}

.visual-stack span:nth-child(1) {
  background: linear-gradient(135deg, #c6ff3d, #ff5f45);
  inset: 12px 30% 56px 0;
}

.visual-stack span:nth-child(2) {
  background: linear-gradient(135deg, #fffdf8, #335cff);
  inset: 50px 6% 8px 28%;
}

.visual-stack span:nth-child(3) {
  background: linear-gradient(135deg, #222, #98b59d);
  inset: 0 14% 98px 18%;
}

.testimonial-track {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(6, minmax(240px, 1fr));
  overflow-x: auto;
  padding-bottom: 12px;
}

.testimonial-card {
  min-width: 240px;
  padding: 18px;
}

.testimonial-card strong {
  display: block;
  margin-top: 20px;
}

.testimonial-card span {
  color: var(--muted);
  font-size: 13px;
}

.pricing-section {
  background: #17181d;
  color: white;
}

.pricing-section p,
.pricing-section .eyebrow {
  color: rgba(255, 255, 255, 0.72);
}

.billing-toggle {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  display: flex;
  gap: 6px;
  padding: 5px;
}

.billing-toggle button {
  border: 0;
  min-height: 38px;
  padding: 0 14px;
}

.pricing-card {
  background: #fffdf8;
  color: var(--ink);
  display: flex;
  flex-direction: column;
  min-height: 440px;
  padding: 20px;
}

.pricing-card.featured {
  border-color: var(--acid);
  box-shadow: 0 0 0 3px var(--acid);
}

.pricing-label {
  align-self: start;
  background: var(--coral);
  border-radius: 999px;
  color: white;
  font-size: 12px;
  font-weight: 800;
  margin-bottom: 18px;
  padding: 5px 10px;
}

.price {
  align-items: baseline;
  display: flex;
  gap: 8px;
  margin: 8px 0;
}

.price strong {
  font-family: var(--font-display);
  font-size: 54px;
  font-weight: 400;
}

.pricing-card ul {
  color: var(--muted);
  display: grid;
  gap: 10px;
  margin: 20px 0;
  padding-left: 18px;
}

.pricing-card p {
  color: var(--muted);
}

.pricing-card .primary-button {
  margin-top: auto;
}

.credit-table {
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius);
  display: grid;
  gap: 1px;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 20px;
  overflow: hidden;
}

.credit-table span {
  background: rgba(255, 255, 255, 0.08);
  display: flex;
  justify-content: space-between;
  padding: 14px;
}

.blog-grid article span {
  color: var(--coral);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.faq-list {
  display: grid;
  gap: 10px;
  margin: 0 auto;
  max-width: 920px;
}

.faq-item button {
  align-items: center;
  background: transparent;
  border: 0;
  color: var(--ink);
  display: flex;
  font-weight: 800;
  justify-content: space-between;
  min-height: 62px;
  padding: 0 18px;
  text-align: left;
  width: 100%;
}

.faq-answer {
  color: var(--muted);
  display: none;
  line-height: 1.7;
  padding: 0 18px 18px;
}

.faq-item.open .faq-answer {
  display: block;
}

.faq-item.open i {
  transform: rotate(180deg);
}

.site-footer {
  align-items: start;
  background: #101114;
  color: white;
  display: flex;
  gap: 30px;
  justify-content: space-between;
  padding: 34px clamp(16px, 4vw, 48px);
}

.site-footer p,
.site-footer a {
  color: rgba(255, 255, 255, 0.7);
}

.toast {
  background: var(--ink);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius);
  bottom: 22px;
  box-shadow: var(--shadow);
  color: white;
  left: 50%;
  opacity: 0;
  padding: 13px 16px;
  pointer-events: none;
  position: fixed;
  transform: translate(-50%, 12px);
  transition:
    opacity 0.2s ease,
    transform 0.2s ease;
  z-index: 100;
}

.toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

@media (max-width: 1180px) {
  .hero,
  .split-section {
    grid-template-columns: 1fr;
  }

  .hero-copy {
    position: static;
  }

  .studio-panel {
    grid-template-columns: 1fr;
  }

  .result-panel {
    min-height: 480px;
  }

  .video-settings,
  .capability-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .capability-card.wide {
    grid-column: 1 / -1;
  }
}

@media (max-width: 820px) {
  .site-header {
    grid-template-columns: auto auto;
    justify-content: space-between;
  }

  .desktop-nav,
  .language-button,
  .header-actions .primary-button.compact {
    display: none;
  }

  .menu-button {
    display: inline-flex;
  }

  h1 {
    font-size: clamp(48px, 15vw, 72px);
  }

  .section-heading,
  .site-footer {
    align-items: start;
    flex-direction: column;
  }

  .template-grid,
  .workflow-grid,
  .pricing-grid,
  .blog-grid,
  .credit-table {
    grid-template-columns: 1fr;
  }

  .settings-grid,
  .video-settings,
  .advanced-grid,
  .capability-grid,
  .result-grid {
    grid-template-columns: 1fr;
  }

  .mode-tabs,
  .compact-tabs {
    grid-template-columns: 1fr;
  }

  .panel-topbar,
  .cost-row {
    align-items: stretch;
    flex-direction: column;
  }

  .primary-button {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}