/* ========================================
   有田焼マグ「透」 Sample LP
   白・生成り × 呉須（藍）1色
   ======================================== */

:root {
  --paper: #fbfaf6;        /* 生成り */
  --paper-2: #f3f0e8;
  --white: #ffffff;
  --ink: #1d2433;          /* 墨に近い紺 */
  --ink-2: #4b5263;
  --ink-3: #8a8f9a;
  --gosu: #24407a;         /* 呉須 */
  --gosu-dark: #1a2f5c;
  --gosu-pale: #e8edf6;
  --line: #e4dfd3;
  --mincho: 'Shippori Mincho', 'Hiragino Mincho ProN', 'Yu Mincho', serif;
  --serif-en: 'Cormorant Garamond', 'Shippori Mincho', serif;
  --sans: 'Noto Sans JP', 'Hiragino Sans', sans-serif;
  --container: 1120px;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.9;
  letter-spacing: .03em;
  -webkit-font-smoothing: antialiased;
  word-break: auto-phrase;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.narrow { max-width: 760px; }
.sp { display: none; }
@media (max-width: 767px) { .sp { display: inline; } .pc { display: none; } }

/* ---------- Typography ---------- */
.h2 {
  font-family: var(--mincho);
  font-weight: 600;
  font-size: clamp(28px, 4.2vw, 44px);
  line-height: 1.5;
  letter-spacing: .06em;
  margin-bottom: 28px;
}
.h3 {
  font-family: var(--mincho);
  font-weight: 600;
  font-size: 24px;
  letter-spacing: .06em;
  margin-bottom: 24px;
}
.text { color: var(--ink-2); margin-bottom: 1.2em; }
.text--center { text-align: center; }
.small { font-size: 13px; color: var(--ink-3); line-height: 1.8; margin-top: 20px; }

.chapter {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 13px;
  color: var(--gosu);
  letter-spacing: .14em;
  margin-bottom: 18px;
}
.chapter span {
  font-family: var(--serif-en);
  font-size: 20px;
  font-style: italic;
  line-height: 1;
}
.chapter::after { content: ''; width: 48px; height: 1px; background: currentColor; opacity: .5; }
.chapter--light { color: #c9d4ea; }

.section { padding: clamp(88px, 12vw, 150px) 0; }
.section-head { text-align: center; margin-bottom: clamp(48px, 7vw, 80px); }
.section-head .chapter { justify-content: center; }
.section-head .chapter::before { content: ''; width: 48px; height: 1px; background: currentColor; opacity: .5; }

/* ---------- Sample label ---------- */
.sample-tag {
  font-family: var(--sans);
  font-style: normal;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: .1em;
  padding: 2px 7px;
  border: 1px solid currentColor;
  border-radius: 3px;
  opacity: .65;
  white-space: nowrap;
  vertical-align: middle;
}
.sample-note { font-size: 12px; line-height: 1.8; color: var(--ink-3); margin: 18px 0 10px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 16px 32px;
  background: var(--gosu);
  color: #fff;
  font-weight: 500;
  font-size: 15px;
  letter-spacing: .08em;
  border: 1px solid var(--gosu);
  border-radius: 2px;
  transition: background .3s var(--ease), color .3s var(--ease);
}
.btn:hover { background: var(--gosu-dark); border-color: var(--gosu-dark); }
.btn--sm { padding: 9px 20px; font-size: 13px; }
.btn--block { display: flex; width: 100%; }
.btn--outline { background: transparent; color: var(--gosu); }
.btn--outline:hover { background: var(--gosu); color: #fff; }
.btn--light { background: #fff; color: var(--gosu); border-color: #fff; }
.btn--light:hover { background: var(--gosu-pale); border-color: var(--gosu-pale); }

/* ---------- Header ---------- */
.header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  transition: background .4s var(--ease), box-shadow .4s var(--ease);
}
.header.is-scrolled { background: rgba(251, 250, 246, .94); backdrop-filter: blur(8px); box-shadow: 0 1px 0 var(--line); }
.header__inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  gap: 32px;
}
.brand { display: flex; align-items: center; gap: 10px; margin-right: auto; }
.brand__mark {
  width: 34px; height: 34px;
  display: grid; place-items: center;
  border: 1px solid var(--gosu);
  color: var(--gosu);
  font-family: var(--mincho);
  font-size: 17px;
}
.brand__name { font-family: var(--mincho); font-weight: 600; font-size: 18px; letter-spacing: .14em; }
.header__nav { display: flex; gap: 28px; font-size: 14px; color: var(--ink-2); }
.header__nav a:hover { color: var(--gosu); }
@media (max-width: 860px) { .header__nav { display: none; } }

/* ---------- 01 Hero ---------- */
.hero {
  position: relative;
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  min-height: min(100vh, 820px);
  padding-top: 64px;
  background: var(--paper);
}
.hero__media { position: relative; overflow: hidden; }
.hero__media img { width: 100%; height: 100%; object-fit: cover; animation: heroZoom 14s var(--ease) both; }
@keyframes heroZoom { from { transform: scale(1.06); } to { transform: scale(1); } }
.hero__body {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 56px clamp(24px, 5vw, 72px);
}
.hero__eyebrow { font-family: var(--serif-en); font-size: 14px; letter-spacing: .22em; color: var(--gosu); margin-bottom: 24px; }
.hero__title {
  font-family: var(--mincho);
  font-weight: 600;
  font-size: clamp(36px, 4.6vw, 60px);
  line-height: 1.45;
  letter-spacing: .08em;
  margin-bottom: 24px;
}
.hero__lead { color: var(--ink-2); margin-bottom: 40px; }
.hero__media::after { content: ''; position: absolute; inset: auto 0 0; height: 38%; background: linear-gradient(180deg, transparent, rgba(18, 26, 44, .55)); pointer-events: none; }
.hero__caption {
  position: absolute;
  left: 40px;
  bottom: 36px;
  z-index: 1;
  font-family: var(--mincho);
  font-size: 18px;
  letter-spacing: .24em;
  color: #fff;
  text-shadow: 0 1px 10px rgba(0, 0, 0, .3);
}

.funding { border-top: 1px solid var(--line); padding-top: 28px; max-width: 420px; }
.funding__row { display: flex; gap: 28px; margin-bottom: 18px; }
.funding__num { display: block; font-family: var(--serif-en); font-size: 30px; font-weight: 500; line-height: 1.1; color: var(--ink); }
.funding__label { font-size: 12px; color: var(--ink-3); }
.funding__bar { height: 3px; background: var(--line); margin-bottom: 10px; overflow: hidden; }
.funding__bar span { display: block; height: 100%; background: var(--gosu); transform-origin: left; animation: barGrow 1.6s .4s var(--ease) both; }
@keyframes barGrow { from { transform: scaleX(0); } }
.funding__goal { font-size: 13px; color: var(--ink-2); margin-bottom: 24px; }
.funding__goal strong { color: var(--gosu); }

@media (max-width: 960px) {
  .hero { grid-template-columns: 1fr; min-height: auto; }
  .hero__media { aspect-ratio: 4 / 3; }
  .hero__body { padding: 40px 24px 64px; }
  .funding { max-width: none; }
}

/* ---------- 02 Hook ---------- */
.hook { text-align: center; }
.hook .chapter { justify-content: center; }
.hook .chapter::before { content: ''; width: 48px; height: 1px; background: currentColor; opacity: .5; }

/* ---------- Split layout ---------- */
.split {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: clamp(40px, 7vw, 96px);
  align-items: center;
}
.split--reverse .split__media { order: 2; }
.split--top { align-items: start; grid-template-columns: 1fr 1fr; }
.split__media img { width: 100%; aspect-ratio: 3 / 2; object-fit: cover; }
.split__media--tall img { aspect-ratio: 4 / 5; }
@media (max-width: 860px) {
  .split, .split--top { grid-template-columns: 1fr; }
  .split--reverse .split__media { order: 0; }
}

/* ---------- 03 Sukashi ---------- */
.sukashi { background: var(--white); }
.patterns { display: grid; gap: 14px; margin-top: 32px; }
.patterns li {
  display: grid;
  grid-template-columns: 44px auto 1fr;
  align-items: center;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}
.patterns strong { font-family: var(--mincho); font-weight: 600; font-size: 17px; letter-spacing: .1em; }
.patterns small { font-size: 13px; color: var(--ink-3); }
.patterns__icon { width: 44px; height: 44px; border: 1px solid var(--gosu-pale); background-color: var(--gosu-pale); background-size: 22px; background-position: center; }
/* 麻の葉・青海波・七宝を簡易SVGで表現 */
.patterns__icon--asanoha {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='none' stroke='%2324407a' stroke-width='.8'%3E%3Cpath d='M10 0v20M0 5l20 10M0 15L20 5M10 10L0 5M10 10L20 5M10 10L0 15M10 10l10 5'/%3E%3C/svg%3E");
}
.patterns__icon--seigaiha {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 10' fill='none' stroke='%2324407a' stroke-width='.8'%3E%3Ccircle cx='10' cy='10' r='9'/%3E%3Ccircle cx='10' cy='10' r='6'/%3E%3Ccircle cx='10' cy='10' r='3'/%3E%3Ccircle cx='0' cy='5' r='4'/%3E%3Ccircle cx='20' cy='5' r='4'/%3E%3C/svg%3E");
  background-size: 22px 11px;
}
.patterns__icon--shippo {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='none' stroke='%2324407a' stroke-width='.8'%3E%3Ccircle cx='10' cy='0' r='10'/%3E%3Ccircle cx='10' cy='20' r='10'/%3E%3Ccircle cx='0' cy='10' r='10'/%3E%3Ccircle cx='20' cy='10' r='10'/%3E%3C/svg%3E");
}

/* ---------- 04 Arita ---------- */
.arita { position: relative; color: #fff; padding: 0; overflow: hidden; }
.arita__media { position: absolute; inset: 0; }
.arita__media img { width: 100%; height: 100%; object-fit: cover; }
.arita__media::after { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(20, 30, 52, .55), rgba(20, 30, 52, .78)); }
.arita__body { position: relative; padding-top: clamp(100px, 14vw, 180px); padding-bottom: clamp(100px, 14vw, 180px); text-align: center; }
.arita__body .chapter { justify-content: center; }
.arita__body .chapter::before { content: ''; width: 48px; height: 1px; background: currentColor; opacity: .5; }
.arita .text { color: rgba(255, 255, 255, .85); }
.facts { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 56px; border-top: 1px solid rgba(255, 255, 255, .25); }
.facts div { padding: 28px 8px 0; }
.facts div + div { border-left: 1px solid rgba(255, 255, 255, .25); }
.facts dt { font-family: var(--serif-en); font-size: clamp(36px, 5vw, 52px); line-height: 1; }
.facts dt small { font-size: .4em; margin-left: 4px; }
.facts dd { font-size: 13px; color: rgba(255, 255, 255, .75); margin-top: 10px; }

/* ---------- 05 Maker ---------- */
.quote {
  margin-top: 36px;
  padding: 28px 0 0 28px;
  border-left: 2px solid var(--gosu);
  font-family: var(--mincho);
}
.quote p { font-size: 19px; line-height: 1.9; letter-spacing: .06em; }
.quote cite { display: block; margin-top: 14px; font-style: normal; font-size: 13px; color: var(--ink-3); font-family: var(--sans); }

/* ---------- 06 Process ---------- */
.process { background: var(--paper-2); }
.steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  counter-reset: step;
}
.steps li { position: relative; padding-top: 24px; border-top: 1px solid var(--ink); }
.process-gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-bottom: 56px; }
.process-gallery img { width: 100%; aspect-ratio: 1; object-fit: cover; }
@media (max-width: 560px) { .process-gallery { grid-template-columns: 1fr 1fr; } .process-gallery figure:first-child { grid-column: 1 / -1; } .process-gallery figure:first-child img { aspect-ratio: 3 / 2; } }
.steps__num { font-family: var(--mincho); font-size: 30px; color: var(--gosu); line-height: 1; display: block; margin-bottom: 14px; }
.steps h3 { font-family: var(--mincho); font-weight: 600; font-size: 18px; letter-spacing: .1em; margin-bottom: 8px; }
.steps p { font-size: 14px; color: var(--ink-2); line-height: 1.8; }
@media (max-width: 1024px) {
  .steps { grid-template-columns: repeat(2, 1fr); gap: 32px 20px; }
}
@media (max-width: 560px) {
  .steps { grid-template-columns: 1fr; }
}

/* ---------- 07 Features ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.feature { padding: 48px 36px; text-align: center; }
.feature + .feature { border-left: 1px solid var(--line); }
.feature .feature__num { font-family: var(--serif-en); font-size: 56px; line-height: 1; color: var(--gosu); margin-bottom: 20px; }
.feature .feature__num small { font-family: var(--mincho); font-size: 16px; margin-left: 4px; }
.feature h3 { font-family: var(--mincho); font-weight: 600; font-size: 20px; letter-spacing: .1em; margin-bottom: 12px; }
.feature p { font-size: 14px; color: var(--ink-2); line-height: 1.9; }
@media (max-width: 860px) {
  .feature-grid { grid-template-columns: 1fr; }
  .feature + .feature { border-left: 0; border-top: 1px solid var(--line); }
}

/* ---------- 08 Scenes ---------- */
.scenes { background: var(--white); }
.scene-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.scene { position: relative; overflow: hidden; }
.scene img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; transition: transform 1.2s var(--ease); }
.scene:hover img { transform: scale(1.04); }
.scene figcaption { padding-top: 16px; font-family: var(--mincho); font-size: 17px; letter-spacing: .1em; }
.scene figcaption span { display: block; font-family: var(--serif-en); font-size: 12px; letter-spacing: .24em; color: var(--gosu); }
.scene:nth-child(2) { margin-top: 48px; }
@media (max-width: 860px) {
  .scene-grid { grid-template-columns: 1fr; gap: 40px; }
  .scene:nth-child(2) { margin-top: 0; }
}

/* ---------- 09 Rewards ---------- */
.reward-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; align-items: start; }
.reward {
  background: var(--white);
  border: 1px solid var(--line);
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
}
.reward__tag { font-size: 12px; color: var(--gosu); letter-spacing: .12em; margin-bottom: 8px; }
.reward h3 { font-family: var(--mincho); font-weight: 600; font-size: 20px; letter-spacing: .08em; margin-bottom: 16px; }
.reward__price { font-family: var(--serif-en); font-size: 44px; line-height: 1; font-weight: 500; }
.reward__note { font-size: 12px; color: var(--ink-3); margin: 8px 0 20px; }
.reward ul { border-top: 1px solid var(--line); padding-top: 16px; margin-bottom: 28px; flex: 1; }
.reward li { font-size: 14px; color: var(--ink-2); padding-left: 1.2em; position: relative; line-height: 1.8; margin-bottom: 6px; }
.reward li::before { content: ''; position: absolute; left: 0; top: .8em; width: 6px; height: 1px; background: var(--gosu); }
.reward--featured { border-color: var(--gosu); box-shadow: 0 20px 50px rgba(36, 64, 122, .12); transform: translateY(-12px); }
.reward--featured .reward__tag { display: inline-block; align-self: flex-start; background: var(--gosu); color: #fff; padding: 2px 10px; }
.reward__img { margin: -4px -24px 20px; }
.reward__img img { width: 100%; aspect-ratio: 3 / 2; object-fit: cover; }
@media (max-width: 1024px) {
  .reward-grid { grid-template-columns: repeat(2, 1fr); }
  .reward--featured { transform: none; }
}
@media (max-width: 560px) {
  .reward-grid { grid-template-columns: 1fr; }
  .reward--featured { order: -1; }
}

/* ---------- 10-11 Spec & Schedule ---------- */
.spec-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.spec-table th, .spec-table td { text-align: left; padding: 16px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
.spec-table th { width: 30%; font-weight: 500; color: var(--ink-3); }
.timeline { position: relative; padding-left: 28px; }
.timeline::before { content: ''; position: absolute; left: 5px; top: 10px; bottom: 10px; width: 1px; background: var(--line); }
.timeline li { position: relative; padding-bottom: 28px; }
.timeline li::before { content: ''; position: absolute; left: -28px; top: 8px; width: 11px; height: 11px; border-radius: 50%; background: var(--paper); border: 1px solid var(--gosu); }
.timeline li:last-child::before { background: var(--gosu); }
.timeline time { display: block; font-family: var(--mincho); font-weight: 600; color: var(--gosu); letter-spacing: .08em; }
.timeline span { font-size: 14px; color: var(--ink-2); }

/* ---------- 12 Risks ---------- */
.risks { background: var(--white); }
.risk-list { display: grid; gap: 20px; margin-bottom: 28px; }
.risk { border: 1px solid var(--line); padding: 28px 32px; background: var(--paper); }
.risk h3 { font-family: var(--mincho); font-weight: 600; font-size: 18px; letter-spacing: .06em; margin-bottom: 10px; }
.risk p { font-size: 14px; color: var(--ink-2); line-height: 1.9; }

/* ---------- 13 FAQ ---------- */
.faq-list { border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item summary {
  list-style: none;
  cursor: pointer;
  position: relative;
  padding: 24px 48px 24px 40px;
  font-family: var(--mincho);
  font-weight: 600;
  font-size: 17px;
  letter-spacing: .04em;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::before { content: 'Q'; position: absolute; left: 4px; top: 21px; font-family: var(--serif-en); font-size: 22px; color: var(--gosu); }
.faq-item summary::after { content: ''; position: absolute; right: 12px; top: 50%; width: 12px; height: 12px; border-right: 1px solid var(--ink-2); border-bottom: 1px solid var(--ink-2); transform: translateY(-75%) rotate(45deg); transition: transform .3s var(--ease); }
.faq-item[open] summary::after { transform: translateY(-25%) rotate(-135deg); }
.faq-item p { padding: 0 24px 26px 40px; font-size: 15px; color: var(--ink-2); }

/* ---------- 14 Final ---------- */
.final {
  background: var(--gosu);
  color: #fff;
  text-align: center;
  padding: clamp(100px, 14vw, 170px) 24px;
  position: relative;
  overflow: hidden;
}
.final::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: .08;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 40 20' fill='none' stroke='%23ffffff' stroke-width='.8'%3E%3Ccircle cx='20' cy='20' r='18'/%3E%3Ccircle cx='20' cy='20' r='12'/%3E%3Ccircle cx='20' cy='20' r='6'/%3E%3Ccircle cx='0' cy='10' r='8'/%3E%3Ccircle cx='40' cy='10' r='8'/%3E%3C/svg%3E");
  background-size: 80px 40px;
}
.final__inner { position: relative; }
.final__eyebrow { font-family: var(--serif-en); letter-spacing: .24em; font-size: 13px; opacity: .75; margin-bottom: 24px; }
.final__title { font-family: var(--mincho); font-weight: 600; font-size: clamp(32px, 5vw, 54px); line-height: 1.5; letter-spacing: .1em; margin-bottom: 44px; }

/* ---------- Footer ---------- */
.footer { background: var(--paper-2); padding: 56px 0 96px; text-align: center; }
.footer__brand { font-family: var(--mincho); font-weight: 600; font-size: 18px; letter-spacing: .14em; }
.footer__copy { font-size: 12px; color: var(--ink-3); }

/* ---------- Mobile CTA ---------- */
.mobile-cta {
  display: none;
  position: fixed;
  left: 16px; right: 16px; bottom: 16px;
  z-index: 60;
  padding: 15px;
  text-align: center;
  background: var(--gosu);
  color: #fff;
  font-weight: 500;
  letter-spacing: .08em;
  box-shadow: 0 10px 30px rgba(26, 47, 92, .3);
  transform: translateY(140%);
  transition: transform .4s var(--ease);
}
.mobile-cta.is-visible { transform: none; }
@media (max-width: 767px) { .mobile-cta { display: block; } }

/* ---------- Reveal ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 1s var(--ease), transform 1s var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero__media img, .funding__bar span { animation: none; }
}
@media (max-width: 960px) { .hero__caption { left: 20px; bottom: 18px; font-size: 14px; } }

/* ---------- Wide screen balance ---------- */
.header__inner { max-width: 1600px; }
.hero { max-width: 1600px; margin: 0 auto; }
@media (min-width: 961px) {
  .hero__body { padding-inline: max(clamp(24px, 5vw, 72px), calc((100% - 500px) / 2)); }
  .funding { max-width: none; }
}
@media (min-width: 1601px) {
  .hero__media { border-radius: 0 0 4px 4px; }
}