/* ============================================================
   健軍 KENGUN TAILOR - LP Stylesheet
   静けさ・余白・暗色と明色の切り替えで質感を伝える設計
============================================================ */

:root{
  /* Color */
  --ink-black:   #151617;
  --deep-navy:   #24334A;
  --mist-gray:   #E7E7E5;
  --soft-white:  #F4F2ED;
  --charcoal:    #3A3A3A;
  --warm-gray:   #D5D2CB;
  --muted-gray:  #8E9195;
  --gold:        #A48B62;
  --hairline-dark: rgba(255,255,255,.18);
  --hairline-light: rgba(0,0,0,.14);

  /* Type */
  --font-serif-jp: "Shippori Mincho", "Yu Mincho", serif;
  --font-sans-jp: "Noto Sans JP", "Yu Gothic", sans-serif;
  --font-serif-en: "Cormorant Garamond", Georgia, serif;
  --font-num: "Inter", Arial, sans-serif;

  /* Layout */
  --max-w: 1200px;
  --pad-pc: clamp(40px, 6vw, 96px);
  --pad-sp: 22px;

  --dur: 750ms;
  --ease: cubic-bezier(.19,.7,.32,1);
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
}

body{
  margin:0;
  background: var(--soft-white);
  color: var(--charcoal);
  font-family: var(--font-sans-jp);
  font-size: 15px;
  line-height: 2;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a{ color: inherit; text-decoration:none; }

h1,h2,h3{ font-family: var(--font-serif-jp); font-weight:600; margin:0; }

.eyebrow{
  font-family: var(--font-serif-en);
  font-style: italic;
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--gold);
  margin: 0 0 18px;
}

.rule{
  width: 120px;
  height: 1px;
  background: var(--hairline-light);
  margin: 28px 0;
}
section.concept .rule{ background: var(--hairline-dark); }

.section-heading{
  font-size: clamp(27px, 3.4vw, 42px);
  line-height: 1.5;
  letter-spacing: .01em;
}

/* Scroll reveal */
[data-anim]{
  opacity: 0;
  transform: translateY(18px);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
}
[data-anim].is-visible{
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce){
  [data-anim]{ opacity:1; transform:none; transition:none; }
}

.sp-only{ display:none; }

/* ============================================================
   Header
============================================================ */
.site-header{
  position: fixed;
  top:0; left:0; right:0;
  z-index: 100;
  height: 80px;
  display:flex;
  align-items:center;
  background: transparent;
  transition: background-color .4s ease, height .3s ease;
}
.site-header.is-scrolled{
  background: rgba(18,20,21,.92);
  height: 64px;
}
.header-inner{
  width:100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--pad-pc);
  display:flex;
  align-items:center;
  justify-content:space-between;
}
.logo{
  font-family: var(--font-serif-jp);
  font-size: 20px;
  letter-spacing: .08em;
  color: #fff;
}
.gnav{ display:flex; align-items:center; gap: 32px; }
.gnav a{
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: .14em;
  color: rgba(255,255,255,.86);
  position: relative;
  padding-bottom: 4px;
}
.gnav a::after{
  content:"";
  position:absolute; left:0; bottom:0;
  width:0; height:1px;
  background: var(--gold);
  transition: width .3s ease;
}
.gnav a:hover::after{ width:100%; }
.gnav-cta{
  border:1px solid rgba(255,255,255,.5);
  padding: 8px 16px !important;
}
.gnav-cta::after{ display:none; }

.hamburger{
  display:none;
  width: 40px; height:40px;
  background:none; border:none;
  flex-direction: column;
  justify-content:center;
  align-items:center;
  gap:5px;
  cursor:pointer;
}
.hamburger span{
  width: 22px; height:1px;
  background:#fff;
  transition: transform .3s ease, opacity .3s ease;
}
.hamburger[aria-expanded="true"] span:nth-child(1){ transform: translateY(6px) rotate(45deg); }
.hamburger[aria-expanded="true"] span:nth-child(2){ opacity:0; }
.hamburger[aria-expanded="true"] span:nth-child(3){ transform: translateY(-6px) rotate(-45deg); }

.spnav{
  display:none;
  position:absolute;
  top:100%; left:0; right:0;
  background: rgba(18,20,21,.97);
  flex-direction:column;
  padding: 8px var(--pad-sp) 24px;
}
.spnav a{
  color:#fff;
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: .1em;
  padding: 14px 0;
  border-bottom: 1px solid var(--hairline-dark);
}
.spnav.is-open{ display:flex; }

/* ============================================================
   First View
============================================================ */
.fv{
  position:relative;
  min-height: 100svh;
  display:flex;
  align-items:flex-end;
  color:#fff;
  overflow:hidden;
}
.fv-media{ position:absolute; inset:0; }
.fv-media img{ width:100%; height:100%; object-fit:cover; }
.fv-overlay{
  position:absolute; inset:0;
  background: linear-gradient(180deg, rgba(10,11,12,.25) 0%, rgba(10,11,12,.15) 40%, rgba(10,11,12,.7) 100%);
}
.fv-body{
  position:relative;
  z-index:2;
  width:100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--pad-pc) 120px;
}
.fv-body .eyebrow{ color: var(--warm-gray); }
.fv-copy{
  font-size: clamp(32px, 5.4vw, 68px);
  line-height: 1.45;
  letter-spacing: .02em;
  margin-bottom: 20px;
}
.fv-lead{
  font-family: var(--font-sans-jp);
  font-size: 16px;
  line-height: 1.9;
  color: var(--warm-gray);
  max-width: 460px;
}
.scroll-cue{
  position:absolute;
  bottom: 32px; left:50%;
  transform: translateX(-50%);
  z-index:2;
  display:flex; flex-direction:column; align-items:center; gap:10px;
}
.scroll-cue span{
  font-family: var(--font-num);
  font-size: 10px;
  letter-spacing: .2em;
  color: rgba(255,255,255,.75);
}
.scroll-cue i{
  width:1px; height:36px;
  background: rgba(255,255,255,.5);
  display:block;
  animation: scrollLine 2.2s ease-in-out infinite;
}
@keyframes scrollLine{
  0%{ transform: scaleY(0); transform-origin: top; }
  50%{ transform: scaleY(1); transform-origin: top; }
  50.1%{ transform-origin: bottom; }
  100%{ transform: scaleY(0); transform-origin: bottom; }
}
@media (prefers-reduced-motion: reduce){
  .scroll-cue i{ animation:none; height:20px; }
}

/* ============================================================
   Intro
============================================================ */
.intro{ background: var(--deep-navy); color: var(--warm-gray); padding: 180px 0; }
.intro-inner{
  max-width: var(--max-w);
  margin:0 auto;
  padding: 0 var(--pad-pc);
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items:center;
}
.intro-text{ max-width: 560px; }
.intro-lead{
  font-family: var(--font-serif-jp);
  font-size: 26px;
  line-height: 1.7;
  color: #fff;
  margin: 0 0 24px;
}
.intro-body{ font-size:15px; line-height:2; }
.intro-photos{ justify-self:end; }
.intro-photo{ width: 78%; aspect-ratio: 1/1; overflow:hidden; margin-left:auto; }
.intro-photo img{ width:100%; height:100%; object-fit:cover; }

/* ============================================================
   Concept
============================================================ */
.concept{ background: var(--ink-black); color: var(--warm-gray); padding: 180px 0; }
.concept-inner{
  max-width: var(--max-w);
  margin:0 auto;
  padding: 0 var(--pad-pc);
  display:grid;
  grid-template-columns: 1fr 0.9fr;
  gap: 72px;
  align-items:center;
}
.concept-text{ max-width: 560px; }
.concept-text .section-heading{ color:#fff; margin-bottom: 4px; }
.concept-text p{ margin: 0 0 20px; }
.concept-photo{ aspect-ratio: 4/5; overflow:hidden; }
.concept-photo img{ width:100%; height:100%; object-fit:cover; }

/* ============================================================
   Material
============================================================ */
.material{ background: var(--ink-black); color: var(--warm-gray); padding: 160px 0 200px; }
.material-inner{
  max-width: var(--max-w);
  margin:0 auto;
  padding: 0 var(--pad-pc);
  display:grid;
  grid-template-columns: 0.9fr 1fr 0.7fr;
  gap: 32px;
  align-items:start;
}
.material-photo--detail{ aspect-ratio: 4/5; overflow:hidden; margin-top: 40px; }
.material-photo--pull{ aspect-ratio: 4/5; overflow:hidden; margin-top: 110px; }
.material-photo img{ width:100%; height:100%; object-fit:cover; }
.material-text .section-heading{ color:#fff; margin-bottom: 24px; }
.material-text p{ margin: 0 0 32px; }
.spec-table{ width:100%; border-collapse:collapse; font-size: 13px; }
.spec-table th,.spec-table td{
  text-align:left;
  padding: 14px 0;
  border-top: 1px solid var(--hairline-dark);
  font-weight: 400;
}
.spec-table th{ width: 30%; color: var(--muted-gray); letter-spacing:.04em; }
.spec-table tr:last-child th,.spec-table tr:last-child td{ border-bottom: 1px solid var(--hairline-dark); }

/* ============================================================
   Process visual (full bleed)
============================================================ */
.process-visual{ position:relative; width:100%; aspect-ratio: 16/8; overflow:hidden; }
.process-visual img{ width:100%; height:100%; object-fit:cover; }
.process-visual-copy{
  position:absolute; left: var(--pad-pc); bottom: 40px;
  color:#fff;
  font-family: var(--font-serif-jp);
  font-size: clamp(18px, 2.6vw, 28px);
  line-height:1.6;
  text-shadow: 0 2px 16px rgba(0,0,0,.4);
}

/* ============================================================
   Features
============================================================ */
.features{ background: var(--mist-gray); padding: 180px 0; }
.features-eyebrow, .features-heading{ max-width: var(--max-w); margin-left:auto; margin-right:auto; padding: 0 var(--pad-pc); }
.features-heading{ margin-bottom: 100px; }
.feature-row{
  max-width: var(--max-w);
  margin: 0 auto 24px;
  padding: 0 var(--pad-pc);
  display:grid;
  grid-template-columns: 90px 1fr 1fr;
  gap: 40px;
  align-items:center;
  padding-bottom: 100px;
  padding-top: 20px;
}
.feature-row:nth-child(odd){ padding-top: 60px; }
.feature-row--rev{ grid-template-columns: 1fr 1fr 90px; }
.feature-row--rev .feature-num{ order: 3; text-align:right; }
.feature-row--rev .feature-text{ order:2; }
.feature-row--rev .feature-photo{ order:1; }
.feature-num{
  font-family: var(--font-serif-en);
  font-size: 44px;
  color: var(--gold);
  font-style: italic;
}
.feature-text h3{ font-size: 22px; margin-bottom: 16px; }
.feature-text p{ font-size: 14px; color: var(--charcoal); }
.feature-photo{ aspect-ratio: 4/3; overflow:hidden; }
.feature-photo--tall{ aspect-ratio: 4/5; }
.feature-photo img{ width:100%; height:100%; object-fit:cover; }

/* ============================================================
   Creator
============================================================ */
.creator{ background: var(--mist-gray); padding: 0 0 0; }
.creator-inner{
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 40px var(--pad-pc) 120px;
  display:grid;
  grid-template-columns: 0.8fr 1fr;
  gap: 64px;
  align-items:center;
}
.creator-photo{ aspect-ratio: 3/4; overflow:hidden; }
.creator-photo img{ width:100%; height:100%; object-fit:cover; }
.creator-text .section-heading{ display:flex; flex-direction:column; gap:8px; margin-bottom: 24px; }
.creator-role{ font-family: var(--font-num); font-size: 12px; letter-spacing:.1em; color: var(--muted-gray); }
.creator-comment{
  font-family: var(--font-serif-jp);
  font-size: 17px;
  line-height: 1.9;
  color: var(--charcoal);
  border-left: 1px solid var(--gold);
  padding-left: 20px;
  margin: 0 0 24px;
}
.creator-place{ max-width: var(--max-w); margin: 0 auto; padding: 0 var(--pad-pc) 180px; }
.creator-place img{ width:100%; aspect-ratio: 16/10; object-fit:cover; }
.creator-place p{ font-size: 13px; color: var(--muted-gray); margin-top: 16px; max-width: 520px; }

/* ============================================================
   Scene
============================================================ */
.scene{ background: var(--ink-black); color: var(--warm-gray); }
.scene{ display:grid; grid-template-columns: 1.1fr 0.9fr; align-items:stretch; }
.scene-photo{ overflow:hidden; }
.scene-photo img{ width:100%; height:100%; object-fit:cover; min-height: 480px; }
.scene-text{ display:flex; flex-direction:column; justify-content:center; padding: 100px var(--pad-pc); }
.scene-copy{ font-family: var(--font-serif-jp); font-size: clamp(22px,2.6vw,32px); line-height:1.7; color:#fff; margin: 0 0 40px; }
.scene-quote{ font-size: 14px; line-height:1.9; }
.scene-quote span{ display:block; margin-top: 10px; color: var(--muted-gray); font-size:12px; }

/* ============================================================
   Product
============================================================ */
.product{ background: var(--ink-black); color: var(--warm-gray); padding: 180px 0; }
.product-inner{
  max-width: var(--max-w);
  margin:0 auto;
  padding: 0 var(--pad-pc);
  display:grid;
  grid-template-columns: 0.9fr 1fr;
  gap: 72px;
  align-items:center;
}
.product-photo{ aspect-ratio: 1/1; overflow:hidden; }
.product-photo img{ width:100%; height:100%; object-fit:cover; }
.product-text .section-heading{ color:#fff; margin-bottom: 16px; }
.product-price{ font-family: var(--font-num); font-size: 26px; color:#fff; margin: 0 0 32px; }
.product-price span{ font-size:12px; color: var(--muted-gray); margin-left: 8px; }
.product-list{ list-style:none; margin:0 0 40px; padding:0; }
.product-list li{
  display:flex; gap: 24px;
  font-size: 14px;
  padding: 14px 0;
  border-top: 1px solid var(--hairline-dark);
}
.product-list li:last-child{ border-bottom: 1px solid var(--hairline-dark); }
.product-list li span{ width: 72px; flex-shrink:0; color: var(--gold); font-size:12px; letter-spacing:.05em; }

/* ============================================================
   Buttons
============================================================ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height: 56px;
  padding: 0 44px;
  border: 1px solid currentColor;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  transition: background-color .3s ease, color .3s ease;
}
.btn--primary{ color: var(--soft-white); }
.btn--primary:hover{ background: var(--soft-white); color: var(--ink-black); }

/* ============================================================
   Related
============================================================ */
.related{ background: var(--deep-navy); color:#fff; padding: 180px 0; }
.related-eyebrow, .related-heading{ max-width: var(--max-w); margin: 0 auto; padding: 0 var(--pad-pc); }
.related-heading{ margin-bottom: 72px; }
.related-grid{
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--pad-pc);
  display:grid;
  grid-template-columns: repeat(3,1fr);
  gap: 1px;
  background: var(--hairline-dark);
}
.related-card{ background: var(--deep-navy); padding: 0 0 32px; }
.related-photo{ aspect-ratio: 4/3; overflow:hidden; margin-bottom: 24px; }
.related-photo img{ width:100%; height:100%; object-fit:cover; transition: transform .4s ease; }
.related-card:hover .related-photo img{ transform: scale(1.02); }
.related-card h3{ font-size: 16px; padding: 0 28px; margin-bottom: 8px; }
.related-card p{ font-size: 13px; padding: 0 28px; color: var(--warm-gray); margin:0; font-family: var(--font-num); }

/* ============================================================
   Final CTA
============================================================ */
.final-cta{ position:relative; min-height: 90svh; display:flex; align-items:center; color:#fff; overflow:hidden; }
.final-cta-bg{ position:absolute; inset:0; width:100%; height:100%; object-fit:cover; }
.final-cta-overlay{ position:absolute; inset:0; background: rgba(10,11,12,.55); }
.final-cta-body{ position:relative; z-index:2; max-width: var(--max-w); margin:0 auto; padding: 0 var(--pad-pc); text-align:center; }
.final-cta .eyebrow{ display:block; }
.final-cta-copy{ font-family: var(--font-serif-jp); font-size: clamp(26px,3.6vw,44px); line-height:1.6; margin: 0 0 40px; }
.final-cta-sub{ margin-top: 28px; font-size: 12px; color: var(--warm-gray); line-height:1.9; }

/* ============================================================
   Footer
============================================================ */
.site-footer{ background: var(--ink-black); color: var(--warm-gray); padding: 100px 0 40px; }
.footer-inner{ max-width: var(--max-w); margin:0 auto; padding: 0 var(--pad-pc); }
.footer-top{ display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap: 24px; margin-bottom: 40px; }
.footer-logo{ font-family: var(--font-serif-jp); font-size: 22px; color:#fff; margin:0; }
.footer-top nav{ display:flex; gap: 24px; flex-wrap:wrap; }
.footer-top nav a{ font-family: var(--font-num); font-size: 11px; letter-spacing:.1em; color: var(--warm-gray); }
.site-footer .rule{ background: var(--hairline-dark); width:100%; }
.footer-bottom{ display:grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 32px; font-size: 12px; padding: 40px 0; }
.footer-info p{ margin:0 0 8px; }
.footer-links{ display:flex; flex-direction:column; gap: 10px; }
.footer-sns{ display:flex; gap: 20px; }
.footer-copyright{ font-family: var(--font-num); font-size: 11px; color: var(--muted-gray); margin:0; }

/* ============================================================
   Responsive
============================================================ */
@media (max-width: 1199px){
  .intro{ padding: 130px 0; }
  .concept, .material, .product, .related{ padding: 130px 0; }
}

@media (max-width: 900px){
  .gnav{ display:none; }
  .hamburger{ display:flex; }
  .sp-only{ display:inline; }

  .fv{ min-height: 92svh; }
  .fv-body{ padding-bottom: 80px; }

  .intro{ padding: 100px 0; }
  .intro-inner{ grid-template-columns:1fr; gap: 40px; }
  .intro-photos{ justify-self:start; width:100%; }
  .intro-photo{ width:60%; margin-left:0; }

  .concept{ padding: 100px 0; }
  .concept-inner{ grid-template-columns:1fr; gap: 40px; }

  .material{ padding: 100px 0 120px; }
  .material-inner{ grid-template-columns:1fr; gap: 32px; }
  .material-photo--detail, .material-photo--pull{ margin-top:0; }

  .process-visual{ aspect-ratio: 4/5; }

  .features{ padding: 100px 0; }
  .features-heading{ margin-bottom: 60px; }
  .feature-row, .feature-row--rev{
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 40px 0 60px;
  }
  .feature-row--rev .feature-num,
  .feature-row--rev .feature-text,
  .feature-row--rev .feature-photo{ order: initial; text-align:left; }

  .creator-inner{ grid-template-columns:1fr; padding-bottom: 60px; gap: 32px; }
  .creator-place{ padding-bottom: 100px; }

  .scene{ grid-template-columns:1fr; }
  .scene-photo img{ min-height: 360px; }
  .scene-text{ padding: 60px var(--pad-sp); }

  .product{ padding: 100px 0; }
  .product-inner{ grid-template-columns:1fr; gap: 32px; }

  .related{ padding: 100px 0; }
  .related-grid{ grid-template-columns:1fr; }

  .final-cta{ min-height: 80svh; }

  .footer-bottom{ grid-template-columns:1fr; gap: 24px; }
}

@media (max-width: 600px){
  .header-inner, .fv-body, .intro-inner, .concept-inner, .material-inner,
  .features-eyebrow, .features-heading, .feature-row, .feature-row--rev,
  .creator-inner, .creator-place, .product-inner, .related-eyebrow,
  .related-heading, .related-grid, .final-cta-body, .footer-inner{
    padding-left: var(--pad-sp);
    padding-right: var(--pad-sp);
  }
  .process-visual-copy{ left: var(--pad-sp); }
  body{ font-size: 14px; }
  .section-heading{ font-size: clamp(24px, 7vw, 32px); }
}