/* ============================================================================
 * pdftool.work V3 Home — index.html only, scoped .v3-* classes
 * Layered on top of v1 styles + v2 design system. Idempotent.
 * ========================================================================== */

/* ----- §1 Notice bar -------------------------------------------------- */
.v3-notice {
  position: relative;
  min-height: 36px;
  background: linear-gradient(180deg, var(--v2-paper-bright), var(--v2-paper));
  border-bottom: 1px solid var(--v2-line);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px 56px 8px 16px;
  font-size: 13px;
  color: var(--v2-ink);
  gap: 16px;
}
.v3-notice__close {
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  background: transparent;
  border: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  cursor: pointer;
  color: var(--v2-muted);
  font-size: 18px;
  line-height: 1;
  opacity: 0.55;
  transition: opacity 180ms, background 180ms;
}
.v3-notice__close:hover { opacity: 1; background: rgba(24,50,58,0.06); }
.v3-notice.is-hidden { display: none; }

/* ----- §2 Hero --------------------------------------------------------- */
.v3-hero {
  position: relative;
  padding: 80px 0 64px;
  background:
    radial-gradient(ellipse at 12% 12%, rgba(229,72,63,0.06), transparent 32rem),
    radial-gradient(ellipse at 88% 6%, rgba(31,111,120,0.06), transparent 28rem),
    var(--v2-paper);
  overflow: hidden;
}
.v3-hero__container {
  width: min(1200px, 92vw);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.08fr .92fr;
  gap: 64px;
  align-items: center;
}
.v3-hero__h1 {
  font-family: Georgia, 'Noto Serif SC', serif;
  font-size: clamp(40px, 5.6vw, 64px);
  line-height: 1.04;
  letter-spacing: -0.035em;
  font-weight: 700;
  color: var(--v2-ink);
  margin: 0;
  max-width: 14ch;
}
.v3-hero__h1 em { color: var(--v2-primary); font-style: normal; }
.v3-hero__chips {
  margin-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
}
.v3-hero__chips span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: rgba(255,250,241,0.78);
  border: 1px solid var(--v2-line);
  border-radius: 999px;
  font-weight: 500;
  color: var(--v2-ink);
}
.v3-hero__cta {
  margin-top: 36px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.v3-hero__marquee {
  margin-top: 64px;
  border-top: 1px dashed var(--v2-line);
  border-bottom: 1px dashed var(--v2-line);
  padding: 12px 0;
  overflow: hidden;
  position: relative;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--v2-muted);
}
.v3-hero__marquee-track {
  display: inline-flex;
  gap: 32px;
  white-space: nowrap;
  animation: v3-marquee 32s linear infinite;
  padding-right: 32px;
}
@keyframes v3-marquee {
  to { transform: translateX(-50%); }
}
.v3-hero__visual {
  position: relative;
  padding: 28px;
  background: var(--v2-paper-bright);
  border: 1px solid var(--v2-line);
  border-radius: 24px;
  box-shadow: var(--v2-shadow-lg);
}
.v3-hero__svg { width: 100%; height: auto; display: block; }
.v3-hero__dots {
  position: absolute;
  inset: auto -16px -16px auto;
  width: 64px;
  height: 64px;
  background: var(--v2-primary);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-family: Georgia, serif;
  font-size: 28px;
  font-weight: 700;
  box-shadow: var(--v2-shadow);
  transform: rotate(-8deg);
}

@media (max-width: 1024px) {
  .v3-hero__container { grid-template-columns: 1fr; gap: 48px; }
  .v3-hero__visual { max-width: 460px; margin: 0 auto; }
}

/* ----- §3 Quick Action (inline dropzone) ------------------------------ */
.v3-quick {
  padding: 72px 0;
  background: var(--v2-paper-bright);
  border-top: 1px solid var(--v2-line);
  border-bottom: 1px solid var(--v2-line);
}
.v3-quick__container {
  width: min(880px, 92vw);
  margin: 0 auto;
  text-align: center;
}
.v3-quick__title {
  font-family: Georgia, 'Noto Serif SC', serif;
  font-size: clamp(28px, 3.4vw, 38px);
  letter-spacing: -0.025em;
  margin: 0 0 8px;
  color: var(--v2-ink);
}
.v3-quick__sub {
  color: var(--v2-muted);
  margin: 0 0 32px;
}
.v3-quick__zone {
  position: relative;
  height: 200px;
  border: 2px dashed var(--v2-line);
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  background: var(--v2-paper);
  cursor: pointer;
  transition: all 280ms var(--v2-ease);
  animation: v3-pulse 2.6s ease-in-out infinite;
  overflow: hidden;
}
@keyframes v3-pulse {
  0%, 100% { border-color: var(--v2-line); }
  50% { border-color: var(--v2-primary); }
}
.v3-quick__zone:hover, .v3-quick__zone.is-dragover {
  border-color: var(--v2-primary);
  border-style: solid;
  background: rgba(229,72,63,0.04);
  animation-play-state: paused;
}
.v3-quick__zone-icon {
  color: var(--v2-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}
.v3-quick__zone-icon svg { width: 36px; height: 36px; }
.v3-quick__zone-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--v2-ink);
}
.v3-quick__zone-sub {
  font-size: 13px;
  color: var(--v2-muted);
}
.v3-quick__hint {
  margin-top: 16px;
  font-size: 12px;
  color: var(--v2-muted);
  letter-spacing: 0.05em;
}

/* ----- §4 Tools Grid 1+7 ---------------------------------------------- */
.v3-tools {
  padding: 96px 0;
}
.v3-tools__container {
  width: min(1200px, 92vw);
  margin: 0 auto;
}
.v3-tools__title {
  font-family: Georgia, 'Noto Serif SC', serif;
  font-size: clamp(28px, 3.4vw, 40px);
  letter-spacing: -0.025em;
  margin: 0 0 8px;
  color: var(--v2-ink);
}
.v3-tools__sub {
  color: var(--v2-muted);
  margin: 0 0 40px;
  font-size: 16px;
}
.v3-tools__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: auto auto;
  gap: 16px;
}
.v3-tool {
  position: relative;
  padding: 24px;
  background: var(--v2-paper-bright);
  border: 1px solid var(--v2-line);
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  text-decoration: none;
  color: var(--v2-ink);
  transition: all 240ms var(--v2-ease);
  overflow: hidden;
}
.v3-tool::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 16px;
  border: 1.5px solid var(--v2-primary);
  opacity: 0;
  transform: scale(0.98);
  pointer-events: none;
  transition: all 240ms var(--v2-ease);
}
.v3-tool:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 36px rgba(24,50,58,0.10), 0 4px 8px rgba(24,50,58,0.05);
  border-color: rgba(229,72,63,0.25);
}
.v3-tool:hover::after { opacity: 1; transform: scale(1); }
.v3-tool__icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: rgba(229,72,63,0.07);
  color: var(--v2-primary);
}
.v3-tool__icon svg { width: 22px; height: 22px; }
.v3-tool__name {
  font-family: Georgia, 'Noto Serif SC', serif;
  font-size: 19px;
  font-weight: 700;
  margin: 12px 0 0;
  letter-spacing: -0.01em;
}
.v3-tool__scenario {
  font-size: 14px;
  line-height: 1.5;
  color: var(--v2-muted);
  margin: 4px 0 0;
}
.v3-tool__action {
  margin-top: auto;
  padding-top: 14px;
  font-size: 14px;
  font-weight: 600;
  color: var(--v2-primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap 180ms var(--v2-ease);
}
.v3-tool:hover .v3-tool__action { gap: 10px; }

/* Hero card — 2x2 span */
.v3-tool--hero {
  grid-column: span 2;
  grid-row: span 2;
  padding: 40px;
  background:
    linear-gradient(135deg, var(--v2-paper-bright), rgba(255,250,241,0.85)),
    repeating-linear-gradient(0deg, rgba(24,50,58,0.025) 0 1px, transparent 1px 8px);
}
.v3-tool--hero .v3-tool__icon { width: 56px; height: 56px; border-radius: 12px; }
.v3-tool--hero .v3-tool__icon svg { width: 28px; height: 28px; }
.v3-tool--hero .v3-tool__name { font-size: 30px; }
.v3-tool--hero .v3-tool__scenario { font-size: 15px; }
.v3-tool--hero__demo {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.v3-tool--hero__demo-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  background: rgba(255,250,241,0.55);
  border: 1px solid var(--v2-line);
  border-radius: 8px;
  font-size: 13px;
  color: var(--v2-ink);
}
.v3-tool--hero__demo-icon {
  font-family: Georgia, serif;
  font-size: 11px;
  font-weight: 700;
  color: var(--v2-primary);
  background: rgba(229,72,63,0.08);
  padding: 2px 6px;
  border-radius: 4px;
}
.v3-tool--hero__demo-name {
  flex: 1;
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.v3-tool--hero__demo-status {
  color: var(--v2-success);
  font-size: 12px;
  font-weight: 600;
}

@media (max-width: 1024px) {
  .v3-tools__grid { grid-template-columns: repeat(2, 1fr); }
  .v3-tool--hero { grid-column: span 2; grid-row: span 1; padding: 28px; }
  .v3-tool--hero .v3-tool__name { font-size: 22px; }
}
@media (max-width: 640px) {
  .v3-tools__grid { grid-template-columns: 1fr; }
  .v3-tool--hero { grid-column: span 1; padding: 24px; }
  .v3-tool--hero .v3-tool__name { font-size: 22px; }
}

/* ----- §5 How It Works ------------------------------------------------ */
.v3-how {
  padding: 96px 0;
  background: linear-gradient(180deg, var(--v2-paper), var(--v2-paper-bright));
  border-top: 1px solid var(--v2-line);
}
.v3-how__title {
  text-align: center;
  font-family: Georgia, 'Noto Serif SC', serif;
  font-size: clamp(28px, 3.4vw, 40px);
  letter-spacing: -0.025em;
  margin: 0 0 56px;
  color: var(--v2-ink);
}
.v3-how__steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
  max-width: 920px;
  margin: 0 auto;
  position: relative;
}
.v3-how__steps::before {
  content: "";
  position: absolute;
  top: 32px;
  left: 16.666%;
  right: 16.666%;
  height: 1px;
  background-image: linear-gradient(90deg, var(--v2-line) 50%, transparent 50%);
  background-size: 12px 1px;
  z-index: 0;
}
.v3-how__step { text-align: center; position: relative; z-index: 1; }
.v3-how__step-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  margin: 0 auto 24px;
  border-radius: 50%;
  background: var(--v2-paper-bright);
  border: 1px solid var(--v2-line);
  font-family: Georgia, serif;
  font-size: 28px;
  font-weight: 700;
  color: var(--v2-primary);
  transition: transform 280ms var(--v2-ease), border-color 280ms;
}
.v3-how__step:hover .v3-how__step-num {
  transform: scale(1.08);
  border-color: var(--v2-primary);
  background: rgba(229,72,63,0.04);
}
.v3-how__step-name {
  font-weight: 600;
  font-size: 18px;
  margin: 0 0 8px;
  color: var(--v2-ink);
}
.v3-how__step-desc {
  font-size: 14px;
  color: var(--v2-muted);
  line-height: 1.6;
  margin: 0;
}
@media (max-width: 768px) {
  .v3-how__steps { grid-template-columns: 1fr; gap: 32px; }
  .v3-how__steps::before { display: none; }
}

/* ----- §6 Scenarios --------------------------------------------------- */
.v3-scenarios { padding: 96px 0; }
.v3-scenarios__container {
  width: min(1200px, 92vw);
  margin: 0 auto;
}
.v3-scenarios__title {
  font-family: Georgia, serif;
  font-size: clamp(28px, 3.4vw, 40px);
  letter-spacing: -0.025em;
  margin: 0 0 8px;
}
.v3-scenarios__sub { color: var(--v2-muted); margin: 0 0 40px; }
.v3-scenarios__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.v3-scene {
  padding: 28px;
  border: 1px solid var(--v2-line);
  border-radius: 16px;
  background: var(--v2-paper-bright);
  transition: all 240ms var(--v2-ease);
  cursor: pointer;
  text-decoration: none;
  color: var(--v2-ink);
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.v3-scene:hover {
  transform: translateY(-2px);
  border-color: var(--v2-primary);
  box-shadow: 0 10px 24px rgba(24,50,58,0.08);
}
.v3-scene__icon {
  font-size: 28px;
  line-height: 1;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: rgba(229,72,63,0.06);
}
.v3-scene__role {
  font-family: Georgia, serif;
  font-size: 17px;
  font-weight: 600;
  margin: 4px 0 0;
}
.v3-scene__pain {
  font-size: 14px;
  color: var(--v2-muted);
  margin: 0;
  line-height: 1.5;
}
.v3-scene__solution {
  margin-top: auto;
  padding-top: 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--v2-primary);
}
@media (max-width: 1024px) { .v3-scenarios__grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px)  { .v3-scenarios__grid { grid-template-columns: 1fr; } }

/* ----- §7 Privacy diagram -------------------------------------------- */
.v3-privacy {
  padding: 96px 0;
  background:
    radial-gradient(ellipse at center top, rgba(31,111,120,0.05), transparent 50%),
    var(--v2-paper-bright);
  border-top: 1px solid var(--v2-line);
}
.v3-privacy__container { width: min(1100px, 92vw); margin: 0 auto; }
.v3-privacy__lede {
  font-family: Georgia, 'Noto Serif SC', serif;
  font-size: clamp(28px, 4vw, 44px);
  text-align: center;
  letter-spacing: -0.025em;
  margin: 0 0 56px;
  color: var(--v2-ink);
  max-width: 18ch;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.2;
}
.v3-privacy__flow {
  display: grid;
  grid-template-columns: 1fr 60px 1fr 60px 1fr;
  gap: 12px;
  align-items: center;
}
.v3-privacy__node {
  padding: 24px 16px;
  background: var(--v2-paper);
  border: 1px solid var(--v2-line);
  border-radius: 16px;
  text-align: center;
}
.v3-privacy__node--accent {
  background: linear-gradient(135deg, rgba(31,111,120,0.08), rgba(31,111,120,0.02));
  border-color: rgba(31,111,120,0.35);
}
.v3-privacy__node-icon {
  width: 40px;
  height: 40px;
  margin: 0 auto 10px;
  border-radius: 10px;
  background: rgba(229,72,63,0.06);
  color: var(--v2-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}
.v3-privacy__node-icon svg { width: 22px; height: 22px; }
.v3-privacy__node-name {
  font-weight: 600;
  font-size: 15px;
  margin-bottom: 4px;
  display: block;
  color: var(--v2-ink);
}
.v3-privacy__node-sub {
  font-size: 12px;
  color: var(--v2-muted);
  line-height: 1.4;
}
.v3-privacy__arrow {
  position: relative;
  height: 1px;
  background: var(--v2-ink);
  opacity: 0.4;
}
.v3-privacy__arrow::after {
  content: "";
  position: absolute;
  right: -1px;
  top: -3px;
  border: 4px solid transparent;
  border-left-color: var(--v2-ink);
}
.v3-privacy__cross {
  position: relative;
  height: 1px;
  background: var(--v2-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}
.v3-privacy__cross svg {
  position: absolute;
  width: 28px;
  height: 28px;
  background: var(--v2-paper-bright);
  border-radius: 50%;
  padding: 4px;
  color: var(--v2-primary);
}
.v3-privacy__caption {
  margin-top: 56px;
  text-align: center;
  font-size: 15px;
  color: var(--v2-muted);
  line-height: 1.6;
}
.v3-privacy__caption strong { color: var(--v2-primary); font-weight: 600; }
@media (max-width: 768px) {
  .v3-privacy__flow { grid-template-columns: 1fr; gap: 16px; }
  .v3-privacy__arrow, .v3-privacy__cross { display: none; }
}

/* ----- §8 Stats ------------------------------------------------------- */
.v3-stats {
  padding: 80px 0;
  border-top: 1px solid var(--v2-line);
  border-bottom: 1px solid var(--v2-line);
  background: var(--v2-paper);
}
.v3-stats__grid {
  width: min(960px, 92vw);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}
.v3-stats__num {
  font-family: Georgia, 'Noto Serif SC', serif;
  font-size: clamp(48px, 6vw, 72px);
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--v2-ink);
  font-weight: 700;
}
.v3-stats__num--accent { color: var(--v2-primary); }
.v3-stats__label {
  margin-top: 10px;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--v2-muted);
}
@media (max-width: 768px) {
  .v3-stats__grid { grid-template-columns: repeat(2, 1fr); gap: 36px 16px; }
}

/* ----- §9 FAQ (native <details>) ------------------------------------ */
.v3-faq {
  padding: 96px 0;
}
.v3-faq__container { width: min(880px, 92vw); margin: 0 auto; }
.v3-faq__title {
  font-family: Georgia, serif;
  font-size: clamp(28px, 3.4vw, 40px);
  letter-spacing: -0.025em;
  margin: 0 0 8px;
}
.v3-faq__sub {
  color: var(--v2-muted);
  margin: 0 0 32px;
  font-size: 15px;
}
.v3-faq__list { display: flex; flex-direction: column; }
.v3-faq__item { border-bottom: 1px solid var(--v2-line); }
.v3-faq__item:first-child { border-top: 1px solid var(--v2-line); }
.v3-faq__item summary {
  list-style: none;
  cursor: pointer;
  padding: 24px 56px 24px 0;
  font-size: 17px;
  font-weight: 500;
  color: var(--v2-ink);
  position: relative;
  font-family: Georgia, 'Noto Serif SC', serif;
  transition: color 180ms;
  letter-spacing: -0.01em;
}
.v3-faq__item summary::-webkit-details-marker { display: none; }
.v3-faq__item summary::after {
  content: "";
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%) rotate(0deg);
  width: 28px;
  height: 28px;
  border: 1px solid var(--v2-line);
  border-radius: 50%;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23637076' stroke-width='2.4' stroke-linecap='round'><path d='m6 9 6 6 6-6'/></svg>");
  background-position: center;
  background-size: 14px;
  background-repeat: no-repeat;
  transition: all 280ms var(--v2-ease);
}
.v3-faq__item summary:hover { color: var(--v2-primary); }
.v3-faq__item[open] summary { color: var(--v2-primary); }
.v3-faq__item[open] summary::after {
  transform: translateY(-50%) rotate(180deg);
  border-color: var(--v2-primary);
  background-color: var(--v2-primary);
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='2.6' stroke-linecap='round'><path d='m6 9 6 6 6-6'/></svg>");
}
.v3-faq__body {
  padding: 0 32px 32px;
  color: var(--v2-muted);
  line-height: 1.7;
  font-size: 15px;
}

/* ----- §10 Final CTA -------------------------------------------------- */
.v3-final {
  padding: 96px 0 112px;
  background:
    radial-gradient(ellipse at 92% 8%, rgba(229,72,63,0.06), transparent 32rem),
    linear-gradient(180deg, var(--v2-paper-bright), var(--v2-paper));
}
.v3-final__container {
  width: min(880px, 92vw);
  margin: 0 auto;
  text-align: center;
}
.v3-final__title {
  font-family: Georgia, 'Noto Serif SC', serif;
  font-size: clamp(48px, 7vw, 88px);
  letter-spacing: -0.04em;
  margin: 0 0 16px;
  color: var(--v2-ink);
  line-height: 1.05;
}
.v3-final__sub {
  font-size: 18px;
  color: var(--v2-muted);
  margin: 0 0 40px;
}
.v3-final__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}
.v3-final__note {
  margin-top: 28px;
  font-size: 13px;
  color: var(--v2-muted);
  letter-spacing: 0.05em;
}

/* ----- Container helper ---------------------------------------------- */
.v3-container {
  width: min(1200px, 92vw);
  margin: 0 auto;
}

/* ----- Reveal helper (uses existing v2 observer) -------------------- */
.v3-reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 600ms var(--v2-ease-out), transform 600ms var(--v2-ease-out);
}
.v3-reveal.is-visible { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  .v3-hero__marquee-track,
  .v3-quick__zone {
    animation: none;
  }
}