/* BarePaper LP — design language: Hero v1 (cream paper / serif / brand-blue equal-width strokes) */

:root {
  --color-bg: #FAF5EC;
  --color-paper: #F8F3EA;
  --color-text: #1A1A1A;
  --color-text-muted: #5A5A5A;
  --color-text-subtle: #888888;
  --color-brand: #1B1DAD;
  --color-brand-hover: #16188F;
  --color-border: rgba(26, 26, 26, 0.10);
  --color-border-light: rgba(26, 26, 26, 0.06);

  --font-serif: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", "YuMincho", serif;
  --font-sans: "Hiragino Kaku Gothic ProN", "Yu Gothic", "YuGothic", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;

  --max-text: 640px;
  --max-narrow: 800px;
  --max-content: 1080px;
  --section-py: 110px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.34), rgba(250, 245, 236, 0) 30%),
    var(--color-bg);
  color: var(--color-text);
  line-height: 1.8;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: geometricPrecision;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

a:hover {
  text-decoration: underline;
}

/* Layout helpers */

section {
  padding: var(--section-py) 24px;
}

.container {
  max-width: var(--max-content);
  margin: 0 auto;
}

.container--text {
  max-width: var(--max-text);
  margin: 0 auto;
}

.container--narrow {
  max-width: var(--max-narrow);
  margin: 0 auto;
}

/* Reveal animation (very subtle; JS無効時は .js が付かないので常に表示される) */

html.js [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

html.js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* Page mark (原石アイコン。旧・手書き風ストロークの置き換え 2026-07-14) */

.page-mark {
  display: block;
  width: 36px;
  height: auto;
  margin: 0 auto 40px;
}

/* Header */

.site-header {
  padding: 36px 24px 0;
}

.site-header__inner {
  max-width: var(--max-content);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.brand:hover {
  text-decoration: none;
}

.brand__icon {
  width: 34px;
  height: 34px;
  border-radius: 8px;
}

.brand__name {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 1.15rem;
  letter-spacing: 0;
  color: var(--color-text);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.site-nav a {
  font-size: 0.875rem;
  font-weight: 500;
  color: rgba(26, 26, 26, 0.62);
}

.site-nav a:hover {
  color: var(--color-brand);
  text-decoration: none;
}

/* Hero */

.hero {
  padding-top: 72px;
  padding-bottom: 96px;
  overflow: hidden;
}

.hero__inner {
  max-width: var(--max-content);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  align-items: center;
  gap: 56px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 28px;
  color: rgba(26, 26, 26, 0.58);
  font-size: 0.875rem;
  font-weight: 600;
}

.eyebrow::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--color-brand);
  transform: rotate(45deg);
  opacity: 0.88;
  flex-shrink: 0;
}

.hero__headline {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(2rem, 4.2vw, 3.5rem);
  line-height: 1.38;
  letter-spacing: 0;
  color: var(--color-text);
}

.hero__sub {
  margin-top: 30px;
  max-width: 520px;
  color: var(--color-text-muted);
  font-size: clamp(1rem, 1.4vw, 1.2rem);
  line-height: 1.9;
  font-weight: 500;
}

.hero__actions {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  margin-top: 44px;
}

.hero__note {
  color: var(--color-text-subtle);
  font-size: 0.875rem;
  font-weight: 500;
}

/* CTA button */

.cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 72px;
  padding: 0 30px;
  border-radius: 8px;
  background: var(--color-brand);
  color: #fff;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  box-shadow: 0 10px 24px rgba(27, 29, 173, 0.12);
  transition: background-color 0.2s ease, transform 0.2s ease;
}

.cta:hover {
  background: var(--color-brand-hover);
  text-decoration: none;
  transform: translateY(-1px);
}

.cta--soon {
  opacity: 0.86;
  cursor: default;
}

.cta--soon:hover {
  background: var(--color-brand);
  transform: none;
}

.cta-badge {
  display: inline-block;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.cta-badge:hover {
  opacity: 0.85;
  transform: translateY(-1px);
}

.cta-badge img {
  height: 72px;
  width: auto;
}

/* iPad mockup (shared) */

.hero__visual {
  position: relative;
  justify-self: center;
  width: min(420px, 88vw);
}

.hero__mockup {
  width: 100%;
  transform: rotate(-3.8deg);
  filter: drop-shadow(0 36px 60px rgba(26, 26, 26, 0.28));
}

.screenshot__mockup {
  width: 100%;
  filter: drop-shadow(0 28px 48px rgba(26, 26, 26, 0.22));
}


/* Section heading */

.section-heading {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(1.45rem, 2.6vw, 1.9rem);
  line-height: 1.6;
  letter-spacing: 0.04em;
  text-align: center;
  margin-bottom: 72px;
  color: var(--color-text);
}

/* About (section 2) */

.about {
  padding-top: 96px;
  padding-bottom: 96px;
  text-align: center;
  border-top: 1px solid var(--color-border-light);
}

.about__body {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: 1.08rem;
  line-height: 2.2;
  color: var(--color-text);
  text-align: left;
}

.about__body p + p {
  margin-top: 1.6em;
}

/* 3 Discoveries (section 3) */

.discoveries {
  border-top: 1px solid var(--color-border-light);
}

.discoveries__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 56px;
}

.discovery {
  text-align: left;
}

.discovery__motif {
  display: block;
  width: 64px;
  height: 40px;
  margin-bottom: 20px;
}

.discovery__motif path,
.discovery__motif circle {
  fill: none;
  stroke: var(--color-brand);
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0.85;
}

.discovery__motif .thin {
  stroke-width: 2;
  opacity: 0.5;
}

.discovery__num {
  font-family: var(--font-serif);
  font-size: 0.85rem;
  color: var(--color-brand);
  letter-spacing: 0.18em;
  margin-bottom: 14px;
  display: block;
}

.discovery__title {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 1.25rem;
  line-height: 1.6;
  margin-bottom: 16px;
  color: var(--color-text);
}

.discovery__body {
  font-size: 0.95rem;
  line-height: 2.0;
  color: var(--color-text-muted);
}

/* 5 Features (section 4) — editorial list with hairlines */

.features {
  border-top: 1px solid var(--color-border-light);
}

.features__list {
  border-top: 1px solid var(--color-border);
}

.feature {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 32px;
  padding: 36px 8px;
  border-bottom: 1px solid var(--color-border);
  align-items: baseline;
}

.feature__title {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 1.12rem;
  line-height: 1.6;
  color: var(--color-text);
}

.feature__body {
  font-size: 0.95rem;
  line-height: 1.9;
  color: var(--color-text-muted);
}

/* Screenshot (section 5) */

.screenshot {
  border-top: 1px solid var(--color-border-light);
}

.screenshot__wrap {
  max-width: 880px;
  margin: 0 auto;
  text-align: center;
}

.screenshot__caption {
  margin-top: 40px;
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
}

/* Pricing (section 6) */

.pricing {
  border-top: 1px solid var(--color-border-light);
}

.pricing__cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 760px;
  margin: 0 auto;
}

.price-card {
  background: rgba(255, 255, 255, 0.5);
  border: 1px solid var(--color-border);
  border-radius: 14px;
  padding: 40px 36px;
  text-align: left;
}

.price-card--accent {
  border: 1.5px solid var(--color-brand);
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 18px 44px -18px rgba(27, 29, 173, 0.16);
}

.price-card__plan {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  margin-bottom: 14px;
}

.price-card--accent .price-card__plan {
  color: var(--color-brand);
}

.price-card__price {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 2rem;
  color: var(--color-text);
  margin-bottom: 18px;
  line-height: 1.2;
}

.price-card__desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.9;
}

.pricing__note {
  text-align: center;
  margin-top: 36px;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* Final CTA (section 7) */

.final-cta {
  border-top: 1px solid var(--color-border-light);
  text-align: center;
  padding-top: 130px;
  padding-bottom: 130px;
}

.final-cta__lines {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(1.45rem, 3vw, 2.1rem);
  line-height: 1.8;
  letter-spacing: 0.04em;
  margin-bottom: 52px;
  color: var(--color-text);
}

.final-cta__lines span {
  display: block;
}

/* Footer */

.site-footer {
  padding: 56px 24px 44px;
  text-align: center;
  border-top: 1px solid var(--color-border-light);
}

.site-footer__nav {
  display: flex;
  gap: 28px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.site-footer__nav a {
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

.site-footer__copy {
  font-size: 0.8rem;
  color: var(--color-text-subtle);
}

.sp-only {
  display: none;
}

/* Language switch link */

.lang-switch {
  padding-left: 16px;
  border-left: 1px solid var(--color-border);
}

/* Hamburger */

.hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  flex-direction: column;
  gap: 5px;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 1px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.hamburger.is-open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.is-open span:nth-child(2) {
  opacity: 0;
}

.hamburger.is-open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Responsive */

@media (max-width: 900px) {
  :root {
    --section-py: 80px;
  }

  .hero {
    padding-top: 48px;
    padding-bottom: 72px;
  }

  .hero__inner {
    grid-template-columns: 1fr;
    gap: 72px;
  }

  .hero__copy {
    text-align: center;
  }

  .hero__sub {
    margin-left: auto;
    margin-right: auto;
  }

  .hero__actions {
    align-items: center;
  }

  .cta-badge img {
    height: 60px;
  }

  .sp-only {
    display: inline;
  }

  .hamburger {
    display: flex;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 100;
    background: var(--color-bg);
    flex-direction: column;
    padding: 20px 24px 28px;
    gap: 0;
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 8px 24px rgba(26, 26, 26, 0.08);
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    padding: 12px 0;
    font-size: 0.95rem;
  }

  .site-header {
    position: relative;
  }

  .lang-switch {
    padding-left: 0;
    border-left: none;
    border: none;
  }

  .hero__visual {
    width: min(320px, 80vw);
  }

  .about__body {
    text-align: center;
    font-size: 1rem;
  }

  .discoveries__grid {
    grid-template-columns: 1fr;
    gap: 56px;
    max-width: 480px;
    margin: 0 auto;
  }

  .feature {
    grid-template-columns: 1fr;
    gap: 10px;
    padding: 28px 4px;
  }

  .pricing__cards {
    grid-template-columns: 1fr;
    max-width: 440px;
  }

  .section-heading {
    margin-bottom: 56px;
  }

  .site-header {
    padding-top: 24px;
  }
}

@media (max-width: 480px) {
  .about__body {
    text-align: left;
  }

  .section-heading {
    font-size: 1.28rem;
    letter-spacing: 0.02em;
  }

  .site-header__inner {
    flex-wrap: wrap;
    gap: 10px 16px;
  }

  .site-nav {
    gap: 16px;
  }

  .site-nav a {
    font-size: 0.8rem;
  }

  .hero__headline {
    font-size: clamp(1.7rem, 7.6vw, 2rem);
  }
}

/* English page: longer Latin lines need a slightly smaller headline */

html[lang="en"] .hero__headline {
  font-size: clamp(1.8rem, 3.1vw, 2.7rem);
  line-height: 1.42;
}

@media (max-width: 480px) {
  html[lang="en"] .hero__headline {
    font-size: 1.55rem;
  }
}

/* i18n: 1ページ内にJP/EN両方を持ち、html[lang]で表示を切り替える（JS無効時はJP表示） */

html[lang="ja"] [lang="en"] {
  display: none !important;
}

html[lang="en"] [lang="ja"] {
  display: none !important;
}

/* Sub pages (support etc.) — same design language as the LP */

.page-head {
  padding-top: 72px;
  padding-bottom: 24px;
  text-align: center;
}

.page-title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(1.7rem, 3.2vw, 2.3rem);
  line-height: 1.5;
  letter-spacing: 0.04em;
  color: var(--color-text);
}

.page-lead {
  margin: 22px auto 0;
  max-width: var(--max-text);
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 2;
}

.contact {
  border-top: 1px solid var(--color-border-light);
  text-align: center;
}

.contact .section-heading {
  margin-bottom: 36px;
}

.contact__body {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 2;
}

.contact__mail {
  display: inline-block;
  margin: 22px 0 18px;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 1.2rem;
  letter-spacing: 0.02em;
}

.contact__note {
  color: var(--color-text-subtle);
  font-size: 0.85rem;
}

/* Legal pages (privacy policy) */

.page-updated {
  margin-top: 18px;
  color: var(--color-text-subtle);
  font-size: 0.85rem;
}

/* Blog — post list (same editorial hairline language as the LP) */

.blog-list {
  padding-top: 24px;
}

.post-list {
  border-top: 1px solid var(--color-border);
}

.post-item {
  display: block;
  padding: 30px 8px;
  border-bottom: 1px solid var(--color-border);
}

.post-item:hover {
  text-decoration: none;
}

.post-item__date {
  font-size: 0.82rem;
  color: var(--color-text-subtle);
  letter-spacing: 0.06em;
}

.post-item__title {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 1.15rem;
  line-height: 1.7;
  margin: 8px 0 10px;
  color: var(--color-text);
  transition: color 0.2s ease;
}

.post-item:hover .post-item__title {
  color: var(--color-brand);
}

.post-item__excerpt {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.9;
}

/* Blog — article body */

.container--article {
  max-width: 770px;
  margin: 0 auto;
}

.page-head--article {
  text-align: left;
  padding-bottom: 8px;
}

.article-body {
  /* 本文770px + 左右パディング48px。タイトル側(.container--article、パディングは外側のsectionが持つ)と左端を揃える */
  max-width: calc(770px + 48px);
  margin: 0 auto;
  padding: 16px 24px 110px;
  font-size: 1rem;
  line-height: 2.05;
  color: var(--color-text);
}

.article-body p {
  margin: 1.15em 0;
}

.article-body h2 {
  font-weight: 700;
  font-size: 1.42rem;
  line-height: 1.6;
  letter-spacing: 0.02em;
  margin: 2.6em 0 1em;
  padding-top: 2.2em;
  border-top: 1px solid var(--color-border-light);
  color: var(--color-text);
}

.article-body h3 {
  font-weight: 700;
  font-size: 1.18rem;
  line-height: 1.6;
  margin: 2.4em 0 0.9em;
  color: var(--color-text);
}

.article-body h4 {
  font-weight: 700;
  font-size: 1.02rem;
  line-height: 1.6;
  margin: 2em 0 0.7em;
  color: var(--color-text);
}

.article-body ul {
  margin: 1.15em 0;
  padding-left: 1.5em;
}

.article-body li {
  margin: 0.35em 0;
}

.table-scroll {
  overflow-x: auto;
  margin: 1.8em 0;
  -webkit-overflow-scrolling: touch;
}

.compare-table {
  border-collapse: collapse;
  width: 100%;
  min-width: 620px;
  font-size: 0.88rem;
  line-height: 1.7;
}

.compare-table th,
.compare-table td {
  border: 1px solid var(--color-border);
  padding: 10px 14px;
  text-align: left;
  vertical-align: top;
  background: rgba(255, 255, 255, 0.4);
}

.compare-table thead th {
  font-weight: 600;
  white-space: nowrap;
  background: rgba(255, 255, 255, 0.66);
}

.compare-table tbody th {
  font-weight: 600;
  white-space: nowrap;
  color: var(--color-text-muted);
  background: rgba(255, 255, 255, 0.55);
}

.article-cta {
  text-align: center;
  margin-top: 4.2em;
  padding-top: 3em;
  border-top: 1px solid var(--color-border-light);
}

.article-cta .cta-badge {
  margin-top: 0.6em;
}

.article-back {
  display: block;
  text-align: center;
  margin-top: 3.6em;
  font-size: 0.9rem;
}

/* 英語本文は和文ほど行間を必要としないので少し詰める */

html[lang="en"] .article-body {
  line-height: 1.85;
}