:root {
  color-scheme: dark;
  --bg: #11100f;
  --surface: #1a1917;
  --surface-raised: #22201d;
  --line: #39352f;
  --text: #f6f0e7;
  --muted: #bbb4aa;
  --accent: #e7ff5b;
  --orange: #ff9f55;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 110px; }
body { min-width: 320px; margin: 0; background: radial-gradient(circle at 50% -10%, rgba(231,255,91,.08), transparent 34rem), var(--bg); color: var(--text); }
a { color: inherit; }
img { display: block; max-width: 100%; }
p { line-height: 1.8; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

.manual-header { border-bottom: 1px solid var(--line); background: rgba(17,16,15,.94); }
.header-inner { display: flex; width: min(100% - 32px, 1080px); min-height: 82px; margin: auto; align-items: center; justify-content: space-between; gap: 20px; }
.brand-link { display: grid; text-decoration: none; }
.brand-link span, .eyebrow { color: var(--accent); font-size: .68rem; font-weight: 850; letter-spacing: .18em; }
.brand-link strong { font-family: Georgia, "Times New Roman", serif; font-size: 1.6rem; font-weight: 400; letter-spacing: -.04em; }
.app-link { padding: 12px 16px; border-radius: 12px; background: var(--orange); color: #211208; font-size: .78rem; font-weight: 850; text-decoration: none; }

.manual-nav { position: sticky; z-index: 30; top: 0; display: flex; justify-content: center; gap: 4px; overflow-x: auto; padding: 9px 12px; border-bottom: 1px solid var(--line); background: rgba(17,16,15,.9); backdrop-filter: blur(14px); scrollbar-width: none; }
.manual-nav a { flex: 0 0 auto; padding: 8px 11px; border-radius: 999px; color: var(--muted); font-size: .72rem; font-weight: 750; text-decoration: none; }
.manual-nav a:hover { background: var(--surface-raised); color: var(--text); }
.manual-nav .back-to-app { display: none; color: var(--orange); }

main { width: min(100% - 32px, 1080px); margin: auto; }
.hero { display: grid; grid-template-columns: minmax(0, 1fr) minmax(280px, 390px); align-items: center; gap: clamp(32px, 6vw, 70px); min-height: 720px; padding: 70px 0; }
.hero h1 { max-width: 660px; margin: 12px 0 20px; font-family: Georgia, "Times New Roman", serif; font-size: clamp(2.8rem, 5vw, 3.8rem); font-weight: 400; letter-spacing: -.055em; line-height: .98; }
.hero-copy > p:not(.eyebrow) { max-width: 620px; color: var(--muted); }
.phone-shot { width: min(100%, 390px); margin: auto; }
.phone-shot img { width: 100%; border: 1px solid #493f35; border-radius: 26px; box-shadow: 0 24px 70px rgba(0,0,0,.52); }
.device-frame {
  position: relative;
  padding: 27px 11px 15px;
  border: 3px solid #aaa59b;
  border-radius: 46px;
  background: linear-gradient(145deg, #77736b, #242220 18%, #0b0a09 76%, #69655e);
  box-shadow:
    0 34px 85px rgba(0,0,0,.62),
    0 0 0 2px #050505,
    0 0 0 3px rgba(255,255,255,.16),
    inset 0 0 0 2px #090908,
    inset 0 0 0 4px rgba(255,255,255,.08);
}
.device-frame::before {
  content: "";
  position: absolute;
  z-index: 2;
  top: 9px;
  left: 50%;
  width: 84px;
  height: 18px;
  border: 1px solid #1d1c1a;
  border-radius: 999px;
  background: #050505;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.03);
  transform: translateX(-50%);
}
.device-frame::after {
  content: "";
  position: absolute;
  top: 114px;
  right: -7px;
  width: 3px;
  height: 58px;
  border-radius: 0 3px 3px 0;
  background: #aaa59b;
}
.device-frame img { border: 0; border-radius: 32px; box-shadow: none; }

.manual-section { padding: 86px 0; border-top: 1px solid var(--line); }
.section-title { max-width: 700px; margin-bottom: 38px; }
.section-title h2, .result-guide h2 { margin: 8px 0 12px; font-family: Georgia, "Times New Roman", serif; font-size: clamp(2.2rem, 5vw, 3.5rem); font-weight: 400; letter-spacing: -.04em; }
.section-title > p:last-child { color: var(--muted); }
.number, .screen-card span { color: var(--accent); font-weight: 900; letter-spacing: .12em; }
.number { font-size: 1rem; }
.screen-card span { font-size: .7rem; }

.guide-card { display: grid; grid-template-columns: minmax(280px, .9fr) minmax(0, 1.1fr); align-items: center; gap: clamp(28px, 7vw, 80px); padding: 44px 0; }
.guide-card + .guide-card { border-top: 1px solid rgba(57,53,47,.7); }
.guide-card.reverse .guide-image { order: 2; }
.guide-image { padding: 18px; border: 1px solid var(--line); border-radius: 22px; background: #0f0e0d; }
.guide-image img { width: 100%; border-radius: 12px; }
.guide-image.compact { align-self: center; }
.guide-copy h3, .start-guide h3 { margin: 4px 0 13px; font-size: 1.45rem; }
.guide-copy > p:not(.number), .start-guide p { color: var(--muted); }
.guide-copy ul { padding-left: 1.2em; color: var(--muted); font-size: .84rem; line-height: 1.8; }
.effect { padding: 14px 16px; border-radius: 12px; background: var(--surface-raised); font-size: .84rem; }
.effect span { margin-right: 6px; color: var(--orange); font-weight: 850; }
.option-list, .result-list { display: grid; gap: 1px; overflow: hidden; margin: 20px 0; border: 1px solid var(--line); border-radius: 14px; background: var(--line); }
.option-list div, .result-list div { display: grid; grid-template-columns: 130px 1fr; gap: 14px; padding: 12px 14px; background: var(--surface); }
.option-list dt, .result-list dt { color: var(--text); font-size: .78rem; font-weight: 850; }
.option-list dd, .result-list dd { margin: 0; color: var(--muted); font-size: .8rem; line-height: 1.6; }
.small-note { font-size: .78rem; }
.start-guide { margin-top: 36px; padding: 26px; border: 1px solid rgba(255,159,85,.45); border-radius: 20px; background: rgba(255,159,85,.08); }
.start-guide div { max-width: none; }
.return-action { display: flex; justify-content: center; margin-top: 24px; }
.return-action a { min-width: 190px; padding: 15px 22px; border-radius: 13px; background: var(--orange); color: #211208; font-size: .82rem; font-weight: 900; text-align: center; text-decoration: none; }

.screen-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.screen-card { display: grid; grid-template-columns: minmax(145px, .8fr) minmax(0, 1.2fr); overflow: hidden; border: 1px solid var(--line); border-radius: 22px; background: var(--surface); }
.screen-card img { width: 100%; height: 100%; max-height: 560px; object-fit: cover; object-position: top; border-right: 1px solid var(--line); }
.screen-card div { padding: 22px; }
.screen-card h3 { margin: 8px 0; font-size: 1.05rem; }
.screen-card p { margin: 0; color: var(--muted); font-size: .8rem; }

.result-guide { display: grid; grid-template-columns: minmax(280px, .8fr) minmax(0, 1.2fr); align-items: center; gap: clamp(36px, 8vw, 100px); }
.result-guide .guide-copy > p:last-child { color: var(--muted); }
.faq-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
details { padding: 18px 20px; border: 1px solid var(--line); border-radius: 15px; background: var(--surface); }
summary { cursor: pointer; font-size: .88rem; font-weight: 850; }
details p { margin-bottom: 0; color: var(--muted); font-size: .8rem; }
.manual-footer { display: flex; width: min(100% - 32px, 1080px); margin: auto; padding: 22px 0 44px; align-items: center; justify-content: space-between; gap: 15px; border-top: 1px solid var(--line); color: #999187; font-size: .68rem; letter-spacing: .04em; }

@media (max-width: 760px) {
  html { scroll-padding-top: 90px; }
  .manual-header { display: none; }
  .manual-nav .back-to-app { display: inline-flex; }
  .hero { grid-template-columns: 1fr; min-height: auto; padding: 56px 0 70px; }
  .hero-copy { order: 1; }
  .phone-shot { order: 2; }
  .screen-grid, .faq-grid { grid-template-columns: 1fr; }
  .guide-card, .result-guide { grid-template-columns: 1fr; gap: 20px; padding: 34px 0; }
  .guide-card .guide-copy { display: contents; }
  .guide-card .guide-copy .number { order: 1; margin: 0 0 -16px; }
  .guide-card .guide-copy h3 { order: 2; margin: 0; }
  .guide-card .guide-image,
  .guide-card.reverse .guide-image { order: 3; }
  .guide-card .guide-copy > :not(.number):not(h3) { order: 4; }
  .guide-image { padding: 12px; }
  .screen-card { grid-template-columns: 1fr; padding: 16px; }
  .screen-card div { display: contents; }
  .screen-card span { order: 1; }
  .screen-card h3 { order: 2; margin-top: 4px; }
  .screen-card img {
    order: 3;
    width: calc(100% + 32px);
    height: auto;
    max-height: none;
    margin: 2px -16px 0;
    border-top: 1px solid var(--line);
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  .screen-card p { order: 4; margin-top: 14px; }
  .manual-footer { flex-wrap: wrap; }
}

@media (max-width: 410px) {
  main { width: min(100% - 24px, 1080px); }
  .manual-nav { justify-content: flex-start; }
  .hero h1 { font-size: 2.2rem; line-height: 1.06; }
  .manual-section { padding: 64px 0; }
  .option-list div, .result-list div { grid-template-columns: 105px 1fr; }
}