:root {
  --paper: #fcfbf8;
  --ivory: #f8f6f1;
  --stone: #eee9df;
  --champagne: #eee4d4;
  --gold: #a98c59;
  --ink: #29251e;
  --muted: #675f54;
  --line: #d9d0c2;
  --serif: 'Noto Serif SC', 'Songti SC', 'SimSun', serif;
  --sans: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
  --western: Georgia, 'Times New Roman', serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--sans); font-size: 15px; line-height: 1.8; -webkit-font-smoothing: antialiased; }
img { display: block; max-width: 100%; }
a { color: inherit; }
::selection { background: #d8c59e; color: var(--ink); }
:focus-visible { outline: 2px solid var(--gold); outline-offset: 4px; }

.section-shell { max-width: 1240px; margin-inline: auto; padding-inline: 48px; }
.site-header { background: #fff; border-bottom: 1px solid #e7e1d7; }
.header-inner { max-width: 1360px; height: 104px; margin: auto; padding: 0 48px; display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.brand { display: flex; align-items: center; width: 170px; height: 98px; overflow: hidden; }
.brand img { width: 164px; height: 99px; object-fit: contain; }
.header-link { min-height: 44px; display: inline-flex; align-items: center; gap: 30px; border-bottom: 1px solid var(--gold); text-decoration: none; font-size: 12px; font-weight: 500; letter-spacing: .03em; }
.header-link span:last-child { font-size: 17px; color: var(--gold); }

.hero { max-width: 1440px; margin: auto; display: grid; grid-template-columns: 53% 47%; min-height: 700px; }
.hero-copy { display: flex; align-items: center; background: var(--ivory); }
.hero-copy-inner { width: min(100%, 670px); margin-left: auto; padding: 78px 82px 86px 48px; }
.hero h1 { font-family: var(--serif); font-size: clamp(37px, 3.5vw, 54px); font-weight: 600; letter-spacing: -.03em; line-height: 1.5; margin: 0; text-wrap: balance; }
.en-subtitle { margin: 8px 0 0; color: #776b5d; font-family: var(--western); font-style: italic; font-size: 20px; line-height: 1.45; }
.hero-rule { width: 56px; height: 1px; background: var(--gold); margin: 36px 0 30px; }
.hero-lead { max-width: 39em; margin: 0; color: #514a40; font-size: 15px; line-height: 2; }
.hero-service { display: flex; flex-wrap: wrap; align-items: baseline; gap: 11px; margin: 24px 0 0; font-family: var(--serif); font-size: 18px; font-weight: 600; }
.hero-service span { color: var(--muted); font-family: var(--western); font-size: 15px; font-style: italic; font-weight: 400; }
.hero-promo { display: flex; align-items: flex-end; gap: 25px; margin-top: 28px; padding-top: 22px; border-top: 1px solid var(--line); }
.hero-promo div { display: flex; flex-direction: column; gap: 2px; padding-bottom: 8px; }
.hero-promo div > span { font-size: 14px; font-weight: 600; }
.hero-promo small { color: var(--muted); font: 13px/1.4 var(--western); }
.hero-promo strong { font: 600 clamp(48px, 5vw, 70px)/1 var(--western); letter-spacing: -.035em; color: var(--gold); }
.hero-terms { margin: 15px 0 24px; color: #514a40; font-size: 12px; line-height: 1.75; }
.hero-terms span { color: var(--muted); font: 12px/1.65 var(--western); }
.button { min-height: 62px; min-width: 308px; padding: 11px 21px 11px 23px; display: inline-flex; align-items: center; justify-content: space-between; gap: 28px; text-decoration: none; font-size: 14px; font-weight: 600; line-height: 1.3; transition: background .2s ease, color .2s ease, transform .2s ease; }
.button small { display: block; margin-top: 3px; font: italic 12px/1.3 var(--western); opacity: .82; }
.button-arrow { font: 25px/1 var(--western); font-weight: 400; }
.button:hover { transform: translateY(-2px); }
.button-ink { background: var(--ink); color: #fff; }
.button-ink:hover { background: #443b30; }
.button-light { background: var(--paper); color: var(--ink); }
.button-light:hover { background: var(--champagne); }
.hero-image-wrap { position: relative; min-height: 700px; overflow: hidden; background: #ddd0bd; }
.hero-image-wrap img { width: 100%; height: 100%; min-height: 700px; object-fit: cover; object-position: 54% 43%; }
.image-caption { position: absolute; bottom: 21px; right: 21px; padding: 5px 9px; background: rgba(252,251,248,.9); font-size: 10px; color: #554e44; }

.pain { padding-top: 116px; padding-bottom: 112px; }
.section-intro h2, .method h2, .promise h2, .offer h2, .faq h2, .final-cta h2 { margin: 0; font-family: var(--serif); font-weight: 600; letter-spacing: -.025em; line-height: 1.5; text-wrap: balance; }
.section-intro h2 { font-size: clamp(27px, 2.8vw, 37px); }
.section-en { margin: 7px 0 0; color: #8a7558; font: italic 18px/1.45 var(--western); }
.section-intro > p:last-child { margin: 23px 0 0; color: var(--muted); }
.pain-list { margin-top: 50px; display: grid; grid-template-columns: 1fr 1fr; column-gap: 72px; }
.pain-item { display: flex; gap: 21px; align-items: flex-start; min-height: 114px; padding: 26px 0 20px; border-top: 1px solid var(--line); }
.pain-stroke { width: 24px; height: 1px; flex: none; background: var(--gold); margin-top: 14px; }
.pain-item p { margin: 0; font-size: 16px; font-weight: 500; line-height: 1.7; }
.pain-item small { display: block; margin-top: 5px; color: var(--muted); font: italic 13px/1.5 var(--western); }

.method { background: var(--stone); }
.method-inner { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(58px, 8vw, 128px); padding-top: 112px; padding-bottom: 112px; }
.method h2 { max-width: 11em; font-size: clamp(30px, 3vw, 42px); }
.method-intro > p:not(.section-en) { max-width: 38em; color: #4f493f; line-height: 2; }
.method-intro > p:nth-last-child(2) { margin: 39px 0 0; }
.method-intro .method-en { margin: 18px 0 0; color: #685e51; font: italic 16px/1.7 var(--western); }
.method-flow { border-top: 1px solid #bfb29e; }
.method-step { display: grid; grid-template-columns: 96px 1fr; column-gap: 18px; border-bottom: 1px solid #bfb29e; padding: 22px 0 24px; }
.method-step > span { grid-row: 1 / span 2; padding-top: 3px; color: #8e7248; font-family: var(--serif); font-size: 17px; font-weight: 600; }
.method-step p { margin: 0; font-size: 14px; line-height: 1.75; }
.method-step small { color: #6e655a; font: italic 13px/1.5 var(--western); margin-top: 5px; }

.promise { display: grid; grid-template-columns: .9fr 1.1fr; column-gap: 90px; padding-top: 112px; padding-bottom: 105px; }
.promise h2 { font-size: clamp(34px, 3.7vw, 50px); }
.promise .section-en { margin-top: 16px; }
.promise-list { border-top: 1px solid var(--line); }
.promise-list p { padding: 19px 0; margin: 0; border-bottom: 1px solid var(--line); font-size: 15px; }
.promise-en { grid-column: 2; align-self: end; margin: 27px 0 0; color: var(--muted); font: italic 14px/1.6 var(--western); }

.offer { background: var(--champagne); }
.offer-inner { display: grid; grid-template-columns: .9fr 1.1fr; gap: 90px; padding-top: 110px; padding-bottom: 110px; }
.offer h2 { font-size: clamp(31px, 3.1vw, 43px); }
.offer-price { display: flex; flex-direction: column; align-items: flex-start; margin-top: 53px; padding-top: 24px; border-top: 1px solid #c9b89e; }
.offer-price > span { font-size: 15px; font-weight: 600; }
.offer-price strong { color: #8e7046; font: 600 clamp(86px, 8vw, 120px)/1.12 var(--western); letter-spacing: -.055em; }
.offer-price small { font: italic 16px/1.4 var(--western); color: #6c5a43; }
.offer-info { border-top: 1px solid #c9b89e; padding-top: 25px; }
.offer-info h3 { font-family: var(--serif); font-size: 20px; font-weight: 600; margin: 0 0 13px; }
.offer-summary { font-size: 17px; font-weight: 600; line-height: 1.6; margin: 0 0 20px; }
.offer-summary span { color: #675d50; font: italic 14px/1.5 var(--western); }
.offer-info ul { padding: 18px 0 0; margin: 0; border-top: 1px solid #c9b89e; list-style: none; }
.offer-info li { position: relative; padding: 4px 0 4px 21px; font-size: 14px; }
.offer-info li::before { content: ''; width: 5px; height: 5px; position: absolute; top: 17px; left: 2px; background: #8e7046; border-radius: 50%; }
.offer-en { color: #5d554a; font: italic 13px/1.65 var(--western); margin: 18px 0 23px; }
.offer-info .button { width: 100%; }
.disclaimer { margin: 16px 0 0; color: #564e44; font-size: 11px; line-height: 1.75; }
.disclaimer span { font-family: var(--western); font-style: italic; }

.faq { display: grid; grid-template-columns: .72fr 1.28fr; column-gap: 100px; padding-top: 110px; padding-bottom: 116px; }
.faq-list { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { display: flex; align-items: center; justify-content: space-between; gap: 18px; min-height: 74px; padding: 16px 0; cursor: pointer; list-style: none; font-weight: 500; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary span { display: block; flex: none; position: relative; width: 18px; height: 18px; font-size: 0; }
.faq summary span::before, .faq summary span::after { content: ''; position: absolute; background: var(--gold); }
.faq summary span::before { width: 16px; height: 1px; top: 8px; left: 1px; }
.faq summary span::after { width: 1px; height: 16px; top: 1px; left: 8px; transition: transform .2s ease; }
.faq details[open] summary span::after { transform: rotate(90deg); }
.faq details p { max-width: 46em; padding: 0 32px 21px 0; margin: 0; color: #514a40; font-size: 13px; line-height: 1.8; }
.faq details p span { color: var(--muted); font: italic 13px/1.65 var(--western); }

.final-cta { background: var(--ink); color: #fff; }
.final-inner { display: flex; justify-content: space-between; align-items: center; gap: 54px; padding-top: 81px; padding-bottom: 83px; }
.final-cta h2 { font-size: clamp(31px, 3.5vw, 47px); }
.final-cta p { margin: 13px 0 0; color: #d9d0c0; font: italic 16px/1.55 var(--western); }
.final-inner .button { flex: none; }
.site-footer { background: #fff; }
.footer-inner { display: grid; grid-template-columns: 1fr auto; gap: 28px 40px; align-items: center; padding-top: 27px; padding-bottom: 34px; }
.footer-brand { display: flex; align-items: center; gap: 10px; }
.footer-brand img { width: 104px; height: 76px; object-fit: contain; }
.footer-brand span { padding-left: 18px; border-left: 1px solid var(--line); color: var(--muted); font: 14px/1.3 var(--western); }
.footer-contact { display: flex; flex-direction: column; align-items: flex-end; font-size: 12px; }
.footer-contact a { font-size: 15px; text-decoration-thickness: 1px; text-underline-offset: 5px; }
.footer-legal { grid-column: 1 / -1; margin: 0; padding-top: 23px; border-top: 1px solid var(--line); color: #71695d; font-size: 10px; line-height: 1.7; }
.mobile-cta { display: none; }

@media (max-width: 1100px) {
  .hero-copy-inner { padding-right: 48px; }
  .method-inner, .offer-inner { gap: 56px; }
  .promise { column-gap: 60px; }
  .faq { column-gap: 58px; }
}

@media (max-width: 860px) {
  body { padding-bottom: calc(72px + env(safe-area-inset-bottom)); }
  .section-shell { padding-inline: 28px; }
  .header-inner { height: 78px; padding: 0 25px; }
  .brand { width: 118px; height: 75px; }
  .brand img { width: 118px; height: 73px; }
  .header-link { font-size: 11px; gap: 9px; }

  .hero { display: flex; flex-direction: column; min-height: 0; }
  .hero-copy, .hero-copy-inner { display: contents; }
  .hero h1 { order: 1; margin: 39px 26px 0; font-size: clamp(32px, 7.6vw, 43px); line-height: 1.48; }
  .en-subtitle { order: 2; margin: 9px 26px 0; font-size: 17px; }
  .hero-promo { order: 3; margin: 25px 26px 0; padding-top: 15px; gap: 18px; }
  .hero-promo strong { font-size: 56px; }
  .hero-image-wrap { order: 4; min-height: 0; margin: 25px 0 0; aspect-ratio: 1.18; }
  .hero-image-wrap img { height: 100%; min-height: 0; object-position: 55% 37%; }
  .image-caption { bottom: 11px; right: 12px; font-size: 9px; }
  .hero-rule { order: 5; margin: 32px 26px 24px; }
  .hero-lead { order: 6; margin: 0 26px; max-width: none; font-size: 14px; }
  .hero-service { order: 7; margin: 22px 26px 0; font-size: 17px; }
  .hero-service span { font-size: 14px; }
  .hero-terms { order: 8; margin: 19px 26px 20px; }
  .hero .button { order: 9; margin: 0 26px 52px; width: calc(100% - 52px); min-width: 0; }

  .pain, .method-inner, .promise, .offer-inner, .faq { padding-top: 75px; padding-bottom: 76px; }
  .pain-list { column-gap: 34px; }
  .method-inner, .promise, .offer-inner, .faq { grid-template-columns: 1fr; gap: 36px; }
  .method-intro > p:nth-last-child(2) { margin-top: 25px; }
  .promise-en { grid-column: auto; margin-top: 0; }
  .offer-price { margin-top: 26px; }
  .offer-info { padding-top: 26px; }
  .faq { gap: 28px; }
  .final-inner { flex-direction: column; align-items: flex-start; gap: 30px; padding-top: 67px; padding-bottom: 69px; }
  .mobile-cta { position: fixed; z-index: 20; bottom: 0; left: 0; right: 0; min-height: calc(72px + env(safe-area-inset-bottom)); padding: 10px 24px calc(10px + env(safe-area-inset-bottom)); display: flex; align-items: center; justify-content: space-between; background: var(--ink); color: #fff; text-decoration: none; box-shadow: 0 -7px 24px rgba(41,37,30,.13); }
  .mobile-cta > span:first-child { font-weight: 600; font-size: 13px; line-height: 1.25; }
  .mobile-cta small { display: block; margin-top: 3px; font: italic 11px/1.3 var(--western); color: #d3c3a4; }
  .mobile-cta > span:last-child { font: 25px/1 var(--western); color: #d3c3a4; }
}

@media (max-width: 540px) {
  .section-shell { padding-inline: 25px; }
  .section-intro h2 { font-size: 29px; }
  .pain { padding-top: 69px; padding-bottom: 67px; }
  .pain-list { grid-template-columns: 1fr; margin-top: 35px; }
  .pain-item { min-height: 0; padding: 20px 0 21px; }
  .pain-item:last-child { border-bottom: 1px solid var(--line); }
  .pain-item p { font-size: 15px; }
  .method-inner, .promise, .offer-inner, .faq { padding-top: 70px; padding-bottom: 70px; }
  .method h2, .offer h2 { font-size: 31px; }
  .method-step { grid-template-columns: 74px 1fr; column-gap: 9px; }
  .method-step > span { font-size: 15px; }
  .promise h2 { font-size: 37px; }
  .offer-inner { gap: 37px; }
  .offer-price strong { font-size: 90px; }
  .offer-info li { font-size: 13px; }
  .faq summary { font-size: 14px; }
  .final-inner { padding-top: 63px; padding-bottom: 67px; }
  .final-cta h2 { font-size: 35px; }
  .final-inner .button { width: 100%; }
  .footer-inner { grid-template-columns: 1fr; gap: 17px; padding-top: 25px; }
  .footer-contact { align-items: flex-start; }
  .footer-legal { padding-top: 17px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}