:root {
  --qs-bg: #0c1220;
  --qs-bg-soft: #121a2e;
  --qs-surface: #ffffff;
  --qs-surface-muted: #f4f7fb;
  --qs-text: #1a2332;
  --qs-text-muted: #5c6b7f;
  --qs-border: rgba(15, 23, 42, 0.08);
  --qs-green-deep: #0b2e1c;
  --qs-green: #1a6b3a;
  --qs-green-bright: #22c55e;
  --qs-gold: #e8c56a;
  --qs-gold-soft: #f5e6b8;
  --qs-blue: #0d6efd;
  --qs-shadow: 0 18px 50px rgba(8, 15, 35, 0.12);
  --qs-shadow-lg: 0 28px 80px rgba(8, 15, 35, 0.18);
  --qs-radius: 18px;
  --qs-font: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;
  --qs-mono: "SFMono-Regular", "Consolas", monospace;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--qs-font);
  color: var(--qs-text);
  background: var(--qs-surface-muted);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--qs-blue);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.qs-hero {
  position: relative;
  overflow: hidden;
  color: #fff;
  background:
    radial-gradient(ellipse 80% 60% at 20% 0%, rgba(26, 107, 58, 0.45), transparent 55%),
    radial-gradient(ellipse 70% 50% at 90% 10%, rgba(232, 197, 106, 0.18), transparent 50%),
    linear-gradient(160deg, #060a12 0%, var(--qs-bg) 35%, #0f1a2e 100%);
  padding: 4.5rem 0 5.5rem;
}

.qs-hero__mesh {
  position: absolute;
  inset: 0;
  opacity: 0.35;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(180deg, #000 30%, transparent 100%);
  pointer-events: none;
}

.qs-hero__inner {
  position: relative;
  z-index: 1;
}

.qs-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-weight: 900;
  letter-spacing: 0.14em;
  font-size: 0.82rem;
  text-transform: uppercase;
  color: var(--qs-gold);
  margin-bottom: 1.25rem;
}

.qs-brand__mark {
  width: 2rem;
  height: 2rem;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--qs-green-deep), var(--qs-green));
  border: 1px solid rgba(232, 197, 106, 0.45);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.12);
  color: var(--qs-gold);
}

.qs-hero h1 {
  font-size: clamp(1.85rem, 4vw, 2.75rem);
  font-weight: 800;
  line-height: 1.25;
  margin: 0 0 1rem;
  letter-spacing: -0.02em;
}

.qs-hero__lead {
  max-width: 42rem;
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.78);
  margin-bottom: 1.75rem;
}

.qs-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.qs-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: rgba(255, 255, 255, 0.9);
}

.qs-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2rem;
  margin-top: -3rem;
  padding-bottom: 4rem;
}

@media (min-width: 1100px) {
  .qs-layout {
    grid-template-columns: 240px minmax(0, 1fr);
    align-items: start;
  }
}

.qs-sidebar {
  position: sticky;
  top: 1.25rem;
}

.qs-nav-card {
  background: var(--qs-surface);
  border-radius: var(--qs-radius);
  border: 1px solid var(--qs-border);
  box-shadow: var(--qs-shadow);
  padding: 1.1rem;
}

.qs-nav-card__title {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--qs-text-muted);
  margin-bottom: 0.75rem;
}

.qs-nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.qs-nav-list a {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.55rem 0.65rem;
  border-radius: 12px;
  color: var(--qs-text);
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.15s ease, color 0.15s ease;
}

.qs-nav-list a:hover {
  background: var(--qs-surface-muted);
  color: var(--qs-green);
  text-decoration: none;
}

.qs-nav-list__num {
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72rem;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(135deg, var(--qs-green), var(--qs-green-deep));
  flex-shrink: 0;
}

.qs-main {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.qs-flow {
  background: var(--qs-surface);
  border-radius: var(--qs-radius);
  border: 1px solid var(--qs-border);
  box-shadow: var(--qs-shadow);
  padding: 1.5rem 1.35rem;
}

.qs-flow__title {
  font-size: 0.95rem;
  font-weight: 800;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.qs-flow__track {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.qs-flow__node {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.5rem 0.85rem;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(26, 107, 58, 0.1), rgba(11, 46, 28, 0.06));
  border: 1px solid rgba(26, 107, 58, 0.18);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--qs-green-deep);
}

.qs-flow__arrow {
  color: var(--qs-text-muted);
  font-size: 0.75rem;
  opacity: 0.55;
}

.qs-step {
  background: var(--qs-surface);
  border-radius: var(--qs-radius);
  border: 1px solid var(--qs-border);
  box-shadow: var(--qs-shadow);
  overflow: hidden;
  scroll-margin-top: 1.5rem;
}

.qs-step__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.35rem 1.5rem 0;
}

.qs-step__badge {
  width: 3rem;
  height: 3rem;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  font-weight: 900;
  color: #fff;
  background: linear-gradient(145deg, var(--qs-green) 0%, var(--qs-green-deep) 100%);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.2),
    0 8px 20px rgba(11, 46, 28, 0.28);
  flex-shrink: 0;
}

.qs-step__titles h2 {
  margin: 0 0 0.35rem;
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.qs-step__titles p {
  margin: 0;
  color: var(--qs-text-muted);
  font-size: 0.92rem;
}

.qs-step__body {
  padding: 1.25rem 1.5rem 1.5rem;
}

.qs-steps-list {
  margin: 0 0 1.25rem;
  padding-left: 1.2rem;
}

.qs-steps-list li {
  margin-bottom: 0.55rem;
}

.qs-steps-list li strong {
  color: var(--qs-text);
}

.qs-callout {
  display: flex;
  gap: 0.75rem;
  padding: 0.9rem 1rem;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(13, 110, 253, 0.06), rgba(13, 110, 253, 0.02));
  border: 1px solid rgba(13, 110, 253, 0.14);
  font-size: 0.9rem;
  color: #234;
  margin-top: 1rem;
}

.qs-callout--gold {
  background: linear-gradient(135deg, rgba(232, 197, 106, 0.14), rgba(232, 197, 106, 0.04));
  border-color: rgba(201, 162, 39, 0.25);
}

.qs-callout__icon {
  color: var(--qs-blue);
  font-size: 1.1rem;
  margin-top: 0.1rem;
  flex-shrink: 0;
}

.qs-callout--gold .qs-callout__icon {
  color: #9a7b1a;
}

.qs-demo-banner {
  display: flex;
  gap: 0.85rem;
  align-items: flex-start;
  padding: 1rem 1.15rem;
  border-radius: var(--qs-radius);
  background: linear-gradient(135deg, rgba(26, 107, 58, 0.08), rgba(232, 197, 106, 0.08));
  border: 1px solid rgba(26, 107, 58, 0.16);
  font-size: 0.9rem;
  color: var(--qs-text);
}

.qs-demo-banner__icon {
  color: var(--qs-green);
  font-size: 1.1rem;
  margin-top: 0.15rem;
  flex-shrink: 0;
}

.qs-shot-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
  margin-top: 1.25rem;
  align-items: stretch;
}

.qs-shot-grid--phones {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.qs-shot-grid .qs-figure {
  margin-top: 0;
}

.qs-figure {
  margin: 1.25rem 0 0;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--qs-border);
  background: #fff;
  box-shadow: var(--qs-shadow);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.qs-figure__img {
  display: block;
  width: 100%;
  height: auto;
  background: #f8fafc;
}

.qs-figure--phone .qs-figure__media {
  flex: 1 1 auto;
  height: 0;
  min-height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: linear-gradient(180deg, #f8fafc, #eef2f7);
  border-bottom: 1px solid var(--qs-border);
}

.qs-figure--phone .qs-figure__img {
  display: block;
  max-height: 100%;
  max-width: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  object-position: top center;
}

.qs-figure__caption {
  flex-shrink: 0;
  padding: 0.65rem 0.85rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--qs-text-muted);
  border-top: 1px solid var(--qs-border);
  background: linear-gradient(180deg, #fff, #f8fafc);
}

.qs-figure--zoomable {
  position: relative;
  cursor: zoom-in;
}

.qs-figure--zoomable::after {
  content: "";
  position: absolute;
  right: 0.65rem;
  bottom: 2.85rem;
  width: 2rem;
  height: 2rem;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.72) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='11' cy='11' r='7'/%3E%3Cline x1='21' y1='21' x2='16.65' y2='16.65'/%3E%3Cline x1='11' y1='8' x2='11' y2='14'/%3E%3Cline x1='8' y1='11' x2='14' y2='11'/%3E%3C/svg%3E") center / 1rem no-repeat;
  opacity: 0;
  transform: scale(0.92);
  transition: opacity 0.15s ease, transform 0.15s ease;
  pointer-events: none;
  z-index: 1;
}

.qs-figure--zoomable:hover::after,
.qs-figure--zoomable:focus-visible::after {
  opacity: 1;
  transform: scale(1);
}

.qs-figure--zoomable:focus-visible {
  outline: 2px solid var(--qs-blue);
  outline-offset: 2px;
}

body.qs-lightbox-open {
  overflow: hidden;
}

.qs-lightbox {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease, visibility 0.2s ease;
}

.qs-lightbox.is-open {
  opacity: 1;
  visibility: visible;
}

.qs-lightbox__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.88);
  cursor: zoom-out;
}

.qs-lightbox__panel {
  position: relative;
  z-index: 1;
  width: min(96vw, 1200px);
  max-height: 96vh;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 0.5rem;
}

.qs-lightbox__figure {
  margin: 0;
  min-width: 0;
  max-height: 92vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.65rem;
}

.qs-lightbox__img {
  display: block;
  max-width: 100%;
  max-height: calc(92vh - 4rem);
  width: auto;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.45);
  background: #fff;
}

.qs-lightbox__img--phone {
  max-height: calc(92vh - 4rem);
  width: auto;
}

.qs-lightbox__caption {
  margin: 0;
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  color: #f8fafc;
  font-size: 0.85rem;
  font-weight: 600;
  text-align: center;
}

.qs-lightbox__counter {
  margin: 0;
  color: rgba(248, 250, 252, 0.72);
  font-size: 0.75rem;
  font-weight: 600;
}

.qs-lightbox__close,
.qs-lightbox__nav {
  border: 0;
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(8px);
  cursor: pointer;
  transition: background 0.15s ease, transform 0.15s ease;
}

.qs-lightbox__close {
  position: absolute;
  top: -0.25rem;
  right: 0;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 999px;
  font-size: 1.1rem;
}

.qs-lightbox__nav {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 999px;
  font-size: 1rem;
  flex-shrink: 0;
}

.qs-lightbox__close:hover,
.qs-lightbox__nav:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.22);
}

.qs-lightbox__close:focus-visible,
.qs-lightbox__nav:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 2px;
}

.qs-lightbox__nav:disabled {
  opacity: 0.35;
  cursor: default;
}

@media (max-width: 767.98px) {
  .qs-lightbox__panel {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr auto;
    width: 100%;
    max-height: 100%;
  }

  .qs-lightbox__nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 2;
  }

  .qs-lightbox__nav--prev {
    left: 0.25rem;
  }

  .qs-lightbox__nav--next {
    right: 0.25rem;
  }

  .qs-lightbox__close {
    top: 0;
    right: 0;
  }

  .qs-lightbox__img {
    max-height: calc(100vh - 7rem);
  }
}

.qs-checklist {
  background: var(--qs-surface);
  border-radius: var(--qs-radius);
  border: 1px solid var(--qs-border);
  box-shadow: var(--qs-shadow);
  padding: 1.5rem;
}

.qs-checklist h2 {
  font-size: 1.2rem;
  font-weight: 800;
  margin: 0 0 1rem;
}

.qs-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.qs-table th,
.qs-table td {
  padding: 0.75rem 0.85rem;
  border-bottom: 1px solid var(--qs-border);
  text-align: left;
}

.qs-table th {
  width: 2.5rem;
  color: var(--qs-text-muted);
  font-weight: 700;
}

.qs-table tr:last-child th,
.qs-table tr:last-child td {
  border-bottom: none;
}

.qs-faq {
  background: var(--qs-surface);
  border-radius: var(--qs-radius);
  border: 1px solid var(--qs-border);
  box-shadow: var(--qs-shadow);
  padding: 1.5rem;
}

.qs-faq h2 {
  font-size: 1.2rem;
  font-weight: 800;
  margin: 0 0 1rem;
}

.qs-faq-item + .qs-faq-item {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--qs-border);
}

.qs-faq-item h3 {
  font-size: 0.95rem;
  font-weight: 800;
  margin: 0 0 0.35rem;
}

.qs-faq-item p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--qs-text-muted);
}

.qs-footer {
  text-align: center;
  padding: 2rem 1rem 2.5rem;
  color: var(--qs-text-muted);
  font-size: 0.82rem;
}

.qs-footer strong {
  letter-spacing: 0.12em;
  color: var(--qs-text);
}

@media print {
  .qs-sidebar,
  .qs-hero__mesh {
    display: none !important;
  }

  .qs-layout {
    grid-template-columns: 1fr;
    margin-top: 0;
  }

  .qs-step,
  .qs-flow,
  .qs-checklist,
  .qs-faq,
  .qs-demo-banner {
    break-inside: avoid;
    box-shadow: none;
  }

  .qs-figure {
    break-inside: avoid;
  }

  .qs-lightbox {
    display: none !important;
  }
}

@media (max-width: 1099.98px) {
  .qs-sidebar {
    position: static;
  }

  .qs-nav-list {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .qs-flow__arrow {
    display: none;
  }
}

@media (max-width: 575.98px) {
  .qs-hero {
    padding: 3rem 0 4.5rem;
  }

  .qs-step__head,
  .qs-step__body {
    padding-left: 1.1rem;
    padding-right: 1.1rem;
  }
}