/* ==========================================================================
   Qwen Image 2.1 Turbo (/qwen-image) — Design 2
   Studio White (#F8F9FA) + PNG Alpha Checkerboard Grid + Berry Magenta (#E11D48)
   & Royal Indigo (#1E1B4B) Editorial Typography + Floating Bottom Studio Dock
   ========================================================================== */

:root {
  --qi-bg: #F8F9FA;
  --qi-surface: #FFFFFF;
  --qi-indigo: #1E1B4B;
  --qi-indigo-soft: #312E81;
  --qi-ink: #0F172A;
  --qi-muted: #475569;
  --qi-magenta: #E11D48;
  --qi-magenta-hover: #BE123C;
  --qi-magenta-soft: rgba(225, 29, 72, 0.09);
  --qi-border: #E2E8F0;
  --qi-border-strong: #CBD5E1;
  --qi-checker-a: #E5E7EB;
  --qi-checker-b: #FFFFFF;
  --qi-font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --qi-font-mono: 'IBM Plex Mono', 'JetBrains Mono', monospace;
}

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

.qi-studio-body {
  margin: 0;
  padding: 0;
  background-color: var(--qi-bg);
  color: var(--qi-ink);
  font-family: var(--qi-font-sans);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.qi-container {
  width: 100%;
  max-width: 1260px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Studio Top Header */
.qi-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(248, 249, 250, 0.94);
  backdrop-filter: blur(12px);
  border-bottom: 1.5px solid var(--qi-border-strong);
}

.qi-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 66px;
  gap: 16px;
}

.qi-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-family: var(--qi-font-mono);
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--qi-indigo);
  letter-spacing: 0.02em;
}

.qi-brand__accent {
  color: var(--qi-magenta);
  font-weight: 800;
}

.qi-brand__tag {
  background: var(--qi-indigo);
  color: #FFFFFF;
  padding: 3px 9px;
  border-radius: 4px;
  font-size: 0.76rem;
}

.qi-nav {
  display: flex;
  align-items: center;
  gap: 22px;
}

.qi-nav a {
  color: var(--qi-ink);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 700;
  transition: color 0.15s ease;
}

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

.qi-header__actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.qi-lang-select {
  appearance: none;
  background: #FFFFFF;
  color: var(--qi-indigo);
  border: 1.5px solid var(--qi-border-strong);
  border-radius: 6px;
  padding: 7px 12px;
  font-family: var(--qi-font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  cursor: pointer;
}

/* Buttons */
.qi-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: var(--qi-magenta);
  color: #FFFFFF;
  font-family: var(--qi-font-sans);
  font-weight: 800;
  font-size: 0.94rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 14px 26px;
  border-radius: 8px;
  border: 2px solid var(--qi-magenta);
  box-shadow: 0 8px 22px rgba(225, 29, 72, 0.25);
  transition: transform 0.15s ease, background 0.15s ease, box-shadow 0.15s ease;
  cursor: pointer;
}

.qi-btn:hover {
  background: var(--qi-magenta-hover);
  border-color: var(--qi-magenta-hover);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(225, 29, 72, 0.34);
}

.qi-btn--sm {
  padding: 9px 16px;
  font-size: 0.78rem;
  border-radius: 6px;
}

.qi-btn--indigo {
  background: var(--qi-indigo);
  border-color: var(--qi-indigo);
  box-shadow: 0 8px 20px rgba(30, 27, 75, 0.2);
}

.qi-btn--indigo:hover {
  background: var(--qi-indigo-soft);
  border-color: var(--qi-indigo-soft);
}

/* Checkerboard Alpha Pattern Utility */
.qi-checkerboard {
  background-color: var(--qi-checker-b);
  background-image:
    linear-gradient(45deg, var(--qi-checker-a) 25%, transparent 25%),
    linear-gradient(-45deg, var(--qi-checker-a) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, var(--qi-checker-a) 75%),
    linear-gradient(-45deg, transparent 75%, var(--qi-checker-a) 75%);
  background-size: 24px 24px;
  background-position: 0 0, 0 12px, 12px -12px, -12px 0;
}

/* HERO SECTION: STUDIO WHITE + PNG ALPHA CANVAS + FLOATING DOCK */
.qi-hero {
  position: relative;
  padding: 44px 0 56px;
  border-bottom: 2px solid var(--qi-border-strong);
  overflow: hidden;
}

.qi-hero__grid {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 36px;
  align-items: center;
}

.qi-hero__kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--qi-font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--qi-magenta);
  background: var(--qi-magenta-soft);
  border: 1.5px solid rgba(225, 29, 72, 0.28);
  padding: 6px 13px;
  border-radius: 6px;
  margin-bottom: 18px;
}

.qi-hero__title {
  margin: 0 0 16px;
  font-size: clamp(2.1rem, 4.1vw, 3.45rem);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -0.03em;
  color: var(--qi-indigo);
  text-transform: uppercase;
}

.qi-hero__title em {
  font-style: normal;
  color: var(--qi-magenta);
  display: block;
}

.qi-hero__lead {
  margin: 0 0 22px;
  font-size: 1.06rem;
  color: #334155;
  font-weight: 500;
  max-width: 620px;
}

.qi-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.qi-pill {
  font-family: var(--qi-font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  padding: 6px 12px;
  border-radius: 6px;
  background: #FFFFFF;
  border: 1.5px solid var(--qi-border-strong);
  color: var(--qi-indigo);
}

.qi-pill--free {
  background: var(--qi-magenta);
  border-color: var(--qi-magenta);
  color: #FFFFFF;
}

/* Right Alpha Transparency Showcase Stage */
.qi-alpha-stage {
  position: relative;
  border-radius: 16px;
  border: 2px solid var(--qi-indigo);
  padding: 18px;
  box-shadow: 0 22px 48px rgba(30, 27, 75, 0.12);
}

.qi-alpha-stage__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--qi-indigo);
  color: #FFFFFF;
  padding: 10px 14px;
  border-radius: 10px;
  font-family: var(--qi-font-mono);
  font-size: 0.76rem;
  font-weight: 700;
  margin-bottom: 14px;
}

.qi-alpha-stage__frame {
  position: relative;
  border-radius: 10px;
  overflow: hidden;
  border: 1.5px solid var(--qi-border-strong);
  background: #FFFFFF;
}

.qi-alpha-stage__img {
  width: 100%;
  height: auto;
  display: block;
}

.qi-alpha-callout {
  position: absolute;
  bottom: 16px;
  right: 16px;
  background: #FFFFFF;
  color: var(--qi-indigo);
  border: 2px solid var(--qi-indigo);
  border-radius: 8px;
  padding: 8px 14px;
  font-family: var(--qi-font-mono);
  font-size: 0.78rem;
  font-weight: 800;
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.18);
}

/* FLOATING STUDIO DOCK BAR (Matching Mockup 2 Bottom Bar) */
.qi-studio-dock {
  margin-top: 32px;
  background: var(--qi-indigo);
  color: #FFFFFF;
  border-radius: 14px;
  padding: 16px 20px;
  display: grid;
  grid-template-columns: 1.25fr auto auto auto;
  gap: 16px;
  align-items: center;
  box-shadow: 0 20px 44px rgba(30, 27, 75, 0.28);
  border: 2px solid #312E81;
}

.qi-dock-prompt {
  background: #FFFFFF;
  color: var(--qi-ink);
  border-radius: 8px;
  padding: 11px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.qi-dock-prompt__input {
  border: none;
  outline: none;
  width: 100%;
  font-family: var(--qi-font-sans);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--qi-ink);
  background: transparent;
}

.qi-dock-refs {
  display: flex;
  align-items: center;
  gap: 6px;
}

.qi-dock-slot {
  width: 38px;
  height: 38px;
  border-radius: 6px;
  border: 1.5px solid rgba(255, 255, 255, 0.28);
  background: rgba(255, 255, 255, 0.1);
  color: #FFFFFF;
  font-family: var(--qi-font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.qi-dock-slot.is-active {
  border-color: var(--qi-magenta);
  background: rgba(225, 29, 72, 0.28);
}

.qi-dock-cfg {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 140px;
}

.qi-dock-cfg label {
  font-family: var(--qi-font-mono);
  font-size: 0.72rem;
  color: #CBD5E1;
  display: flex;
  justify-content: space-between;
}

.qi-dock-cfg input[type="range"] {
  accent-color: var(--qi-magenta);
  cursor: pointer;
}

/* Preset Prompt Chips below Dock */
.qi-preset-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
}

.qi-preset-chip {
  background: #FFFFFF;
  color: var(--qi-indigo);
  border: 1.5px solid var(--qi-border-strong);
  border-radius: 6px;
  padding: 7px 12px;
  font-size: 0.8rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.15s ease;
}

.qi-preset-chip:hover,
.qi-preset-chip.is-active {
  border-color: var(--qi-magenta);
  color: var(--qi-magenta);
  background: var(--qi-magenta-soft);
}

/* SECTION STYLING */
.qi-section {
  padding: 68px 0;
  border-bottom: 1.5px solid var(--qi-border-strong);
}

.qi-section--white {
  background: #FFFFFF;
}

.qi-section__header {
  max-width: 820px;
  margin-bottom: 38px;
}

.qi-section__eyebrow {
  display: inline-block;
  font-family: var(--qi-font-mono);
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--qi-magenta);
  margin-bottom: 8px;
}

.qi-section__title {
  margin: 0 0 12px;
  font-size: clamp(1.65rem, 2.8vw, 2.35rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--qi-indigo);
}

.qi-section__desc {
  margin: 0;
  color: var(--qi-muted);
  font-size: 1rem;
}

/* 4-CARD CAPABILITIES MATRIX */
.qi-cards-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}

.qi-card {
  background: #FFFFFF;
  border: 2px solid var(--qi-border-strong);
  border-radius: 12px;
  padding: 26px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.qi-card:hover {
  border-color: var(--qi-indigo);
  box-shadow: 0 14px 32px rgba(30, 27, 75, 0.08);
}

.qi-card--highlight {
  border-color: var(--qi-magenta);
  background: linear-gradient(180deg, rgba(225, 29, 72, 0.04) 0%, #FFFFFF 100%);
}

.qi-card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.qi-card__tag {
  font-family: var(--qi-font-mono);
  font-size: 0.74rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 4px;
  background: var(--qi-indigo);
  color: #FFFFFF;
}

.qi-card__price {
  font-family: var(--qi-font-mono);
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--qi-magenta);
}

.qi-card__title {
  margin: 0 0 10px;
  font-size: 1.3rem;
  font-weight: 900;
  color: var(--qi-indigo);
}

.qi-card__summary {
  margin: 0 0 16px;
  color: #334155;
  font-size: 0.94rem;
}

.qi-card__bullets {
  margin: 0 0 20px;
  padding-left: 18px;
  color: #1E293B;
  font-size: 0.88rem;
}

.qi-card__bullets li {
  margin-bottom: 6px;
}

/* INTERACTIVE WORKBENCH CALCULATOR */
.qi-workbench {
  background: #FFFFFF;
  border: 2px solid var(--qi-indigo);
  border-radius: 14px;
  padding: 30px;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 28px;
  align-items: stretch;
  box-shadow: 0 18px 40px rgba(30, 27, 75, 0.08);
}

.qi-wb-group {
  margin-bottom: 20px;
}

.qi-wb-label {
  display: block;
  font-family: var(--qi-font-mono);
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--qi-indigo);
  margin-bottom: 8px;
}

.qi-wb-seg {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.qi-wb-btn {
  background: var(--qi-bg);
  color: var(--qi-indigo);
  border: 1.5px solid var(--qi-border-strong);
  border-radius: 6px;
  padding: 9px 14px;
  font-family: var(--qi-font-sans);
  font-size: 0.84rem;
  font-weight: 700;
  cursor: pointer;
}

.qi-wb-btn.is-active {
  background: var(--qi-indigo);
  color: #FFFFFF;
  border-color: var(--qi-indigo);
}

.qi-wb-summary {
  background: var(--qi-indigo);
  color: #FFFFFF;
  border-radius: 10px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.qi-wb-price {
  font-family: var(--qi-font-mono);
  font-size: 3rem;
  font-weight: 900;
  color: #FFFFFF;
  line-height: 1;
  margin: 8px 0;
}

.qi-wb-price span {
  color: #FDA4AF;
  font-size: 1.1rem;
}

/* COMPARISON TABLE */
.qi-table-wrap {
  overflow-x: auto;
  border: 2px solid var(--qi-border-strong);
  border-radius: 12px;
  background: #FFFFFF;
}

.qi-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.92rem;
}

.qi-table th,
.qi-table td {
  padding: 15px 18px;
  border-bottom: 1px solid var(--qi-border);
}

.qi-table th {
  background: var(--qi-indigo);
  color: #FFFFFF;
  font-family: var(--qi-font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.qi-table td.is-win {
  font-weight: 800;
  color: var(--qi-magenta);
  background: rgba(225, 29, 72, 0.04);
}

/* FAQ ACCORDION */
.qi-faq-list {
  display: grid;
  gap: 12px;
  max-width: 920px;
}

.qi-faq-item {
  background: #FFFFFF;
  border: 1.5px solid var(--qi-border-strong);
  border-radius: 10px;
  padding: 18px 22px;
}

.qi-faq-item summary {
  font-weight: 800;
  font-size: 1.02rem;
  cursor: pointer;
  color: var(--qi-indigo);
}

.qi-faq-item p {
  margin: 12px 0 0;
  color: #334155;
  font-size: 0.94rem;
}

/* FOOTER */
.qi-footer {
  background: var(--qi-indigo);
  color: #CBD5E1;
  padding: 36px 0;
  font-size: 0.88rem;
}

.qi-footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.qi-footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.qi-footer__nav a {
  color: #F8FAFC;
  text-decoration: none;
  font-weight: 600;
}

.qi-footer__nav a:hover {
  color: #FDA4AF;
}

@media (max-width: 980px) {
  .qi-hero__grid,
  .qi-cards-grid,
  .qi-workbench {
    grid-template-columns: 1fr;
  }
  .qi-studio-dock {
    grid-template-columns: 1fr;
  }
  .qi-nav {
    display: none;
  }
}