/* ── Reset ── */
*{box-sizing:border-box;margin:0;padding:0;}
img{max-width:100%;display:block;}

/* ── Variables ── */
:root{
  --c-ink:#1a2530;
  --c-mid:#4a5a65;
  --c-mute:#7a8a92;
  --c-line:#d4dce0;
  --c-bg:#f6f4f0;
  --c-white:#ffffff;
  --c-accent:#1a6b8a;
  --c-accent-lt:#e3f0f5;
  --c-dark:#0e1820;
  --ff:'Hiragino Kaku Gothic ProN','Hiragino Sans','Yu Gothic UI',system-ui,sans-serif;
  --max:1200px;
  --pad:clamp(1.5rem,5vw,3rem);
}

body{font-family:var(--ff);background:var(--c-bg);color:var(--c-ink);line-height:1.7;font-size:15px;}

/* ── Layout helpers ── */
.container{max-width:var(--max);margin:0 auto;padding:0 var(--pad);}
.section{padding:clamp(4rem,8vw,7rem) 0;}

/* ── Header ── */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  height:60px;display:flex;align-items:center;
  padding:0 var(--pad);
  transition:background .4s,border-color .4s;
  border-bottom:1px solid transparent;
}
.site-header.is-solid{
  background:rgba(246,244,240,.97);
  border-bottom-color:var(--c-line);
}
.site-header.is-dark{
  background:transparent;
  border-bottom-color:transparent;
}
.header-inner{
  max-width:var(--max);width:100%;margin:0 auto;
  display:flex;align-items:center;justify-content:space-between;
}
/* ── Logo ── */
.site-logo{
  display:flex;flex-direction:column;
  text-decoration:none;line-height:1.15;
}
.logo-captain,.logo-gripper{
  font-size:13px;font-weight:600;letter-spacing:.2em;
  color:var(--c-ink);
}
.logo-line{
  display:block;width:100%;height:1px;
  background:var(--c-accent);margin:3px 0;
}
.site-header.is-dark .logo-captain,
.site-header.is-dark .logo-gripper{color:#fff;}
.site-nav{display:flex;gap:1.75rem;}
.site-nav a{
  font-size:14px;letter-spacing:.08em;text-decoration:none;
  color:var(--c-mid);transition:color .2s;
}
.site-nav a:hover{color:var(--c-accent);}
.site-header.is-dark .site-nav a{color:rgba(255,255,255,.8);}
.site-header.is-dark .site-nav a:hover{color:#fff;}

/* ── Hero ── */
.hero{
  position:relative;
  height:100svh;min-height:560px;
  display:flex;align-items:flex-end;
  overflow:hidden;
}
.hero-photo{
  position:absolute;inset:0;
  background:center 35%/cover no-repeat;
  will-change:transform;
}
.hero-photo::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(
    180deg,
    rgba(14,24,32,.08) 0%,
    rgba(14,24,32,.38) 40%,
    rgba(14,24,32,.80) 75%,
    rgba(14,24,32,.92) 100%
  );
}
.hero-body{
  position:relative;z-index:2;
  width:100%;padding:0 var(--pad) clamp(3rem,6vw,5rem);
}
.hero-inner{max-width:var(--max);margin:0 auto;}
.hero-label{
  font-size:15px;letter-spacing:.2em;
  color:rgba(255,255,255,.85);margin-bottom:1.25rem;
}
.hero-h1{
  font-size:clamp(2rem,5.5vw,4rem);
  font-weight:700;line-height:1.15;
  color:#fff;margin-bottom:1.25rem;
  letter-spacing:-.02em;
}
.hero-lead{
  font-size:clamp(13px,1.5vw,16px);
  color:rgba(255,255,255,.62);
  max-width:480px;line-height:1.85;
  margin-bottom:2.5rem;
}
.hero-scroll{
  position:absolute;bottom:2rem;right:var(--pad);z-index:2;
  display:flex;flex-direction:column;align-items:center;gap:.5rem;
}
.hero-scroll-bar{
  width:1px;height:48px;
  background:rgba(255,255,255,.2);
  position:relative;overflow:hidden;
}
.hero-scroll-bar::after{
  content:'';position:absolute;top:-100%;left:0;
  width:100%;height:100%;
  background:rgba(255,255,255,.65);
  animation:scrollAnim 2s ease infinite;
}
@keyframes scrollAnim{to{top:200%;}}
.hero-scroll-txt{
  font-size:8px;letter-spacing:.2em;
  color:rgba(255,255,255,.3);
  writing-mode:vertical-rl;
}

/* ── Buttons ── */
.btn{
  display:inline-block;
  font-size:12px;font-weight:700;letter-spacing:.1em;
  padding:13px 28px;cursor:pointer;
  text-decoration:none;border:none;
  transition:background .2s,color .2s,border-color .2s;
}
.btn-primary{background:var(--c-accent);color:#fff;}
.btn-primary:hover{background:#145a72;}
.btn-outline-light{
  background:transparent;color:rgba(255,255,255,.75);
  border:1px solid rgba(255,255,255,.3);
  margin-left:1rem;
}
.btn-outline-light:hover{border-color:#fff;color:#fff;}
.btn-outline{
  background:transparent;color:var(--c-accent);
  border:1px solid var(--c-accent);
}
.btn-outline:hover{background:var(--c-accent);color:#fff;}

/* ── Section heads ── */
.sec-label{
  font-size:13px;letter-spacing:.22em;font-weight:700;
  color:var(--c-accent);margin-bottom:.75rem;
}
.sec-h2{
  font-size:clamp(1.5rem,3.5vw,2.4rem);
  font-weight:700;line-height:1.2;
  letter-spacing:-.02em;color:var(--c-ink);
  margin-bottom:1.25rem;
}
.sec-lead{
  font-size:14px;color:var(--c-mid);
  line-height:1.85;max-width:540px;
}

/* ── Horizontal rule ── */
.hr{border:none;border-top:1px solid var(--c-line);}

/* ── Issues ── */
.issues-wrap{background:var(--c-dark);}
.issues-inner{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:0;
}
.issues-photo{
  position:relative;overflow:hidden;
  min-height:480px;
}
.issues-photo img{
  width:100%;height:100%;
  object-fit:cover;object-position:center 30%;
  display:block;opacity:.7;
}
.issues-text{
  padding:clamp(3rem,6vw,5rem) clamp(2rem,4vw,3.5rem);
  display:flex;flex-direction:column;justify-content:center;
}
.issues-text .sec-label{color:rgba(255,255,255,.4);}
.issues-text .sec-h2{color:#fff;}
.issue-list{list-style:none;margin-top:2rem;}
.issue-list li{
  display:flex;gap:1rem;
  padding:.9rem 0;
  border-bottom:1px solid rgba(255,255,255,.07);
  font-size:13px;color:rgba(255,255,255,.62);
  line-height:1.65;
}
.issue-list li:last-child{border-bottom:none;}
.issue-num{
  font-size:10px;color:rgba(255,255,255,.25);
  letter-spacing:.06em;min-width:22px;
  padding-top:3px;flex-shrink:0;
}

/* ── About / Product ── */
.about-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:clamp(2rem,5vw,4rem);
  align-items:center;
}
.about-photo{
  position:relative;overflow:hidden;
}
.about-photo img{
  width:100%;
  object-fit:contain;
  display:block;
}
.about-text{}
.about-text .sec-lead{max-width:none;}
.about-gallery{position:relative;}
.ag-main{
  border-radius:10px;
  overflow:hidden;
  background:rgba(0,0,0,.02);
  position:relative;
}
.ag-arrow{
  position:absolute;top:50%;transform:translateY(-50%);
  z-index:2;
  background:rgba(255,255,255,.82);
  border:none;
  width:36px;height:36px;border-radius:50%;
  font-size:22px;line-height:1;
  color:var(--c-ink);
  cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 2px 8px rgba(0,0,0,.12);
  transition:background .15s,opacity .15s;
  opacity:.7;
}
.ag-arrow:hover{background:#fff;opacity:1;}
.ag-prev{left:10px;}
.ag-next{right:10px;}
.ag-view-label{
  position:absolute;
  bottom:10px;left:10px;
  font-size:11px;font-weight:700;letter-spacing:.1em;
  color:#fff;
  background:rgba(20,34,48,.55);
  backdrop-filter:blur(4px);
  border-radius:4px;
  padding:3px 9px;
  pointer-events:none;
}
.ag-img{
  width:100%;
  aspect-ratio:1/1;
  object-fit:contain;
  display:block;
  transition:opacity .3s;
}
.ag-img.is-switching{opacity:0;}
.ag-dots{
  display:flex;
  justify-content:center;
  gap:7px;
  margin-top:.75rem;
}
.ag-dot{
  width:8px;height:8px;
  border-radius:50%;
  background:rgba(20,34,48,.15);
  cursor:pointer;
  transition:background .2s,transform .2s;
}
.ag-dot.is-active{
  background:var(--c-accent);
  transform:scale(1.3);
}

/* ── Functions ── */
.fn-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:2rem 3rem;
  margin-top:3rem;
}
.fn-grid.js-fade{opacity:1;transform:none;}
.fn-item{
  padding:0;
  opacity:0;
  transform:translateY(20px);
  transition:opacity .7s ease,transform .7s ease;
}
.fn-grid.is-visible .fn-item{opacity:1;transform:none;}
.fn-grid.is-visible .fn-item:nth-child(2){transition-delay:.1s;}
.fn-grid.is-visible .fn-item:nth-child(3){transition-delay:.2s;}
.fn-grid.is-visible .fn-item:nth-child(4){transition-delay:.3s;}
.fn-grid.is-visible .fn-item:nth-child(5){transition-delay:.4s;}
.fn-item:nth-child(5){grid-column:1 / -1;max-width:50%;}
.fn-icon{
  display:block;
  color:var(--c-accent);
  margin-bottom:.6rem;
}
.fn-icon svg{
  width:32px;height:32px;
}
.fn-head{
  display:flex;
  align-items:center;
  gap:1rem;
  margin-bottom:.75rem;
}
.fn-img{
  width:88px;
  height:88px;
  object-fit:contain;
  flex-shrink:0;
}
.fn-n{
  font-size:clamp(3rem,5vw,4.5rem);
  font-weight:800;
  line-height:1;
  letter-spacing:-.03em;
  color:var(--c-accent);
  opacity:.18;
  margin-bottom:0;
}
.fn-title{
  font-size:clamp(15px,1.6vw,18px);
  font-weight:700;
  color:var(--c-ink);
  margin-bottom:.5rem;
  line-height:1.4;
}
.fn-body{font-size:13px;color:var(--c-mid);line-height:1.75;}

/* ── How / Mechanism ── */
.mech-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:clamp(2rem,5vw,4rem);
  align-items:center;
}
.mech-photo{overflow:hidden;}
.mech-photo img{
  width:100%;height:420px;
  object-fit:cover;object-position:center;
  display:block;
}
.mech-steps{margin-top:2rem;}
.mech-step{
  display:flex;gap:1.25rem;
  padding:1rem 0;
  border-bottom:1px solid var(--c-line);
}
.mech-step:last-child{border-bottom:none;}
.mech-n{
  font-size:10px;letter-spacing:.06em;
  color:var(--c-accent);min-width:22px;
  padding-top:3px;flex-shrink:0;
}
.mech-title{
  font-size:13px;font-weight:700;
  color:var(--c-ink);margin-bottom:3px;
}
.mech-desc{font-size:12px;color:var(--c-mid);line-height:1.65;}

/* ── Use cases ── */
.usecase-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:0;
  border-top:1px solid var(--c-line);
  border-left:1px solid var(--c-line);
  margin-top:2.5rem;
}
.usecase-item{
  padding:2rem 1.75rem;
  border-right:1px solid var(--c-line);
  border-bottom:1px solid var(--c-line);
}
.uc-tag{
  display:inline-block;
  font-size:10px;letter-spacing:.1em;font-weight:700;
  color:var(--c-accent);
  background:var(--c-accent-lt);
  padding:3px 10px;margin-bottom:1rem;
}
.uc-title{
  font-size:14px;font-weight:700;
  color:var(--c-ink);margin-bottom:.5rem;
}
.uc-body{font-size:12px;color:var(--c-mid);line-height:1.75;}

/* ── Proof ── */
.proof-wrap{background:var(--c-dark);}
.proof-fw-head{
  padding:clamp(2rem,4vw,3.5rem) 0 clamp(1.5rem,3vw,2.5rem);
}
.proof-head{
  margin-bottom:0;
}
.proof-head .sec-label{color:rgba(255,255,255,.4);}
.proof-head .sec-h2{color:#fff;}
.proof-fw-gallery{
  display:flex;
  flex-direction:column;
  gap:6px;
}

/* ── Row 共通 ── */
.pg-row{
  display:grid;
  gap:6px;
  width:100%;
}
.pg-row img{
  width:100%;height:100%;
  object-fit:cover;display:block;
  opacity:0;
  transform:translateY(16px);
  transition:opacity .9s ease,transform .9s ease;
}
.pg-row.js-fade{opacity:1;transform:none;}
.pg-row.is-visible img{opacity:1;transform:none;}
.pg-row.is-visible img:nth-child(2){transition-delay:.08s;}
.pg-row.is-visible img:nth-child(3){transition-delay:.16s;}
.pg-row.is-visible img:nth-child(4){transition-delay:.24s;}
.pg-row.is-visible img:nth-child(5){transition-delay:.32s;}

/* Row A: 縦(左) + 横2×2(右)  — 3col × 2row */
.pg-row--a{
  grid-template-columns:1fr 1fr 1fr;
  grid-template-rows:1fr 1fr;
  aspect-ratio:3/1;
}
.pg-a-portrait{grid-column:1;grid-row:1/span 2;}
.pg-a-l1{grid-column:2;grid-row:1;}
.pg-a-l2{grid-column:3;grid-row:1;}
.pg-a-l3{grid-column:2;grid-row:2;}
.pg-a-l4{grid-column:3;grid-row:2;}

/* Row B: 横×2縦(左) + 縦(中) + 横×2縦(右)  — 3col × 2row */
.pg-row--b{
  grid-template-columns:1fr 1fr 1fr;
  grid-template-rows:1fr 1fr;
  aspect-ratio:3/1;
}
.pg-b-l1{grid-column:1;grid-row:1;}
.pg-b-l2{grid-column:1;grid-row:2;}
.pg-b-portrait{grid-column:2;grid-row:1/span 2;}
.pg-b-l3{grid-column:3;grid-row:1;}
.pg-b-l4{grid-column:3;grid-row:2;}

/* Row C: 横2×2(左) + 縦(右)  — 3col × 2row */
.pg-row--c{
  grid-template-columns:1fr 1fr 1fr;
  grid-template-rows:1fr 1fr;
  aspect-ratio:3/1;
}
.pg-c-l1{grid-column:1;grid-row:1;}
.pg-c-l2{grid-column:2;grid-row:1;}
.pg-c-l3{grid-column:1;grid-row:2;}
.pg-c-l4{grid-column:2;grid-row:2;}
.pg-c-portrait{grid-column:3;grid-row:1/span 2;}

/* モバイル：1列に並べる */
@media(max-width:640px){
  .pg-row{
    grid-template-columns:1fr 1fr;
    grid-template-rows:auto;
    aspect-ratio:auto;
  }
  .pg-row img{aspect-ratio:3/2;}
  .pg-a-portrait,
  .pg-b-portrait,
  .pg-c-portrait{
    grid-column:1/-1;
    aspect-ratio:3/2;
  }
  .pg-a-portrait{grid-row:1;}
  .pg-a-l1{grid-column:1;grid-row:2;}
  .pg-a-l2{grid-column:2;grid-row:2;}
  .pg-a-l3{grid-column:1;grid-row:3;}
  .pg-a-l4{grid-column:2;grid-row:3;}
  .pg-b-l1{grid-column:1;grid-row:1;}
  .pg-b-l2{grid-column:2;grid-row:1;}
  .pg-b-portrait{grid-row:2;}
  .pg-b-l3{grid-column:1;grid-row:3;}
  .pg-b-l4{grid-column:2;grid-row:3;}
  .pg-c-l1{grid-column:1;grid-row:1;}
  .pg-c-l2{grid-column:2;grid-row:1;}
  .pg-c-l3{grid-column:1;grid-row:2;}
  .pg-c-l4{grid-column:2;grid-row:2;}
  .pg-c-portrait{grid-row:3;}
}

/* ── CTA ── */
.cta-wrap{
  position:relative;overflow:hidden;
  display:flex;align-items:center;
  min-height:400px;
}
.cta-photo{
  position:absolute;inset:0;
  background:center 55%/cover no-repeat;
}
.cta-photo::after{
  content:'';position:absolute;inset:0;
  background:rgba(14,24,32,.82);
}
.cta-body{
  position:relative;z-index:1;
  width:100%;padding:5rem var(--pad);
}
.cta-inner{
  max-width:var(--max);margin:0 auto;
  display:grid;grid-template-columns:1fr auto;
  gap:3rem;align-items:center;
}
.cta-txt .sec-h2{color:#fff;margin-bottom:.75rem;}
.cta-txt .sec-lead{color:rgba(255,255,255,.52);max-width:none;}
.cta-actions{
  display:flex;flex-direction:column;gap:.75rem;
  align-items:flex-end;
}
.cta-note{
  font-size:10px;color:rgba(255,255,255,.22);
  margin-top:.25rem;text-align:right;
}

/* ── Footer ── */
.site-footer{
  background:#0a1018;
  padding:3rem var(--pad) 2rem;
}
.footer-inner{
  max-width:var(--max);margin:0 auto;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:2rem;
  align-items:start;
  padding-bottom:2rem;
  border-bottom:1px solid rgba(255,255,255,.08);
  margin-bottom:1.5rem;
}
.footer-brand{
  display:flex;flex-direction:column;gap:.4rem;
}
.footer-logo{
  font-size:14px;font-weight:800;letter-spacing:.15em;
  color:#fff;
}
.footer-tagline{
  font-size:11px;color:rgba(255,255,255,.6);letter-spacing:.06em;
}
.footer-info{
  display:flex;flex-direction:column;gap:.4rem;
  font-size:12px;color:rgba(255,255,255,.75);line-height:1.7;
}
.footer-info a{
  color:rgba(255,255,255,.85);text-decoration:none;
}
.footer-info a:hover{color:#fff;}
.footer-copy{
  font-size:10px;color:rgba(255,255,255,.45);
  max-width:var(--max);margin:0 auto;display:block;
}

/* ── Animations ── */
.js-fade{opacity:0;transform:translateY(24px);transition:opacity .8s ease,transform .8s ease;}
.js-fade.is-visible{opacity:1;transform:none;}
.js-fade-hero{opacity:0;transform:translateY(16px);}
.js-fade-hero.is-visible{animation:fadeUp .95s ease forwards;}
@keyframes fadeUp{to{opacity:1;transform:none;}}

/* ── Responsive ── */
@media(max-width:767px){
  .ag-arrow{width:26px;height:26px;font-size:16px;}
  .site-nav{display:none;}
  .issues-inner,
  .about-grid,
  .mech-grid,
  .proof-inner,
  .cta-inner{grid-template-columns:1fr;}
  .issues-photo{min-height:240px;}
  .fn-grid{grid-template-columns:1fr;}
  .usecase-grid{grid-template-columns:1fr;}
  .cta-inner{grid-template-columns:1fr;}
  .cta-actions{align-items:flex-start;}
  .btn-outline-light{margin-left:0;}
}

/* ════════════════════════════════
   ENHANCEMENT LAYER
   ════════════════════════════════ */

/* ── Scroll Progress Bar ── */
#scrollProgress{
  position:fixed;top:0;left:0;z-index:200;
  height:2px;width:0%;
  background:var(--c-accent);
  transition:width .1s linear;
  pointer-events:none;
}

/* ── Hamburger Button ── */
.burger{
  display:none;
  flex-direction:column;justify-content:center;align-items:center;gap:5px;
  width:40px;height:40px;
  background:none;border:none;cursor:pointer;padding:6px;
  color:rgba(255,255,255,.8);
  transition:color .3s;
}
.site-header.is-solid .burger{color:var(--c-ink);}
.burger span{
  display:block;width:22px;height:1.5px;
  background:currentColor;
  transition:transform .32s ease,opacity .32s ease;
  transform-origin:center;
}
.burger.is-open span:nth-child(1){transform:translateY(6.5px) rotate(45deg);}
.burger.is-open span:nth-child(2){opacity:0;transform:scaleX(0);}
.burger.is-open span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg);}

/* ── Mobile Nav Overlay ── */
.mobile-nav{
  position:fixed;inset:0;z-index:90;
  background:rgba(10,16,24,.97);
  display:flex;align-items:center;justify-content:center;
  opacity:0;pointer-events:none;
  transition:opacity .38s ease;
}
.mobile-nav.is-open{opacity:1;pointer-events:auto;}
.mobile-nav-inner{
  display:flex;flex-direction:column;gap:2.25rem;text-align:center;
}
.mobile-nav-link{
  font-size:clamp(1.2rem,5vw,1.6rem);font-weight:700;letter-spacing:.14em;
  color:rgba(255,255,255,.55);text-decoration:none;
  transition:color .2s,letter-spacing .2s;
}
.mobile-nav-link:hover{color:#fff;letter-spacing:.2em;}

/* ── Active Nav Link ── */
.site-nav a.is-active{color:var(--c-accent) !important;}
.site-header.is-dark .site-nav a.is-active{color:#fff !important;opacity:1;}

/* ── Usecase Card Hover ── */
.usecase-item{
  transition:background .25s,transform .3s,box-shadow .3s;
  position:relative;
  overflow:hidden;
}
.usecase-item::before{
  content:'';position:absolute;inset:0;
  background:linear-gradient(135deg,var(--c-accent-lt) 0%,transparent 60%);
  opacity:0;transition:opacity .3s;
}
.usecase-item:hover{
  background:var(--c-accent-lt);
  transform:translateY(-4px);
  box-shadow:0 12px 32px rgba(26,107,138,.12);
  z-index:1;
}
.usecase-item:hover::before{opacity:1;}
.usecase-item:hover .uc-title{color:var(--c-accent);}

/* ── Count-up Number Style ── */
.proof-v .count-num{
  font-variant-numeric:tabular-nums;
  display:inline-block;
  min-width:1.5ch;
}

/* ── Hamburger visible on SP ── */
@media(max-width:767px){
  .burger{display:flex;}
}

/* ── Tide Chart ── */
.tide-card{
  margin-top:2.5rem;
  background:var(--c-dark);
  padding:1.75rem 1.5rem 1.25rem;
}
.tide-canvas{
  width:100%;height:auto;display:block;
}
.tide-legend{
  display:flex;gap:1.5rem;flex-wrap:wrap;
  justify-content:center;margin-top:1.1rem;
}
.tl{
  display:inline-flex;align-items:center;gap:.5rem;
  font-size:11px;color:rgba(255,255,255,.4);letter-spacing:.04em;
}
.tl::before{content:'';display:inline-block;width:22px;height:2.5px;border-radius:2px;}
.tl-tide::before  {background:#4a8ea0;}
.tl-zone::before  {background:rgba(232,168,56,.5);height:10px;}
.tl-lock::before  {background:#e8a838;height:8px;width:8px;border-radius:50%;}
.tl-unlock::before{background:#5bb0e0;height:8px;width:8px;border-radius:50%;}
.tide-note{
  margin-top:.85rem;font-size:10px;
  color:rgba(255,255,255,.18);text-align:center;letter-spacing:.04em;
}
.tide-scroll-hint{
  display:none;text-align:center;margin-top:.6rem;
  font-size:10px;color:rgba(255,255,255,.22);letter-spacing:.06em;
}
@media(max-width:640px){
  .tide-card{overflow-x:auto;-webkit-overflow-scrolling:touch;}
  .tide-canvas{min-width:560px;}
  .tide-scroll-hint{display:block;}
}

/* ── Contact Form Section ── */
.cf-section{
  padding:clamp(4rem,8vw,7rem) 0;
  background:var(--c-bg);
  border-top:1px solid var(--c-line);
}
.cf-head{margin-bottom:3rem;}
.cf-form{max-width:680px;}
.cf-row-2{display:grid;grid-template-columns:1fr 1fr;gap:0 2.5rem;}
.cf-field{position:relative;margin-bottom:2.25rem;}
.cf-input{
  width:100%;
  padding:1.1rem 0 .5rem;
  background:transparent;
  border:none;border-bottom:1.5px solid var(--c-line);
  font-family:var(--ff);font-size:14px;color:var(--c-ink);
  outline:none;transition:border-color .3s;
  -webkit-appearance:none;appearance:none;
}
.cf-select{cursor:pointer;}
.cf-textarea{height:130px;resize:none;display:block;}
.cf-input:focus{border-bottom-color:var(--c-accent);}
.cf-label{
  position:absolute;left:0;top:.88rem;
  font-size:13px;color:var(--c-mute);
  pointer-events:none;
  transition:top .22s,font-size .22s,color .22s,letter-spacing .22s;
}
.cf-input:focus ~ .cf-label,
.cf-input:not(:placeholder-shown) ~ .cf-label,
.cf-field.has-value .cf-label{
  top:0;font-size:10px;color:var(--c-accent);letter-spacing:.08em;
}
.cf-label--sel{top:.88rem;font-size:13px;}
.cf-field.has-value .cf-label--sel{top:0;font-size:10px;color:var(--c-accent);letter-spacing:.08em;}
.cf-bar{
  position:absolute;bottom:0;left:0;
  width:0;height:2px;background:var(--c-accent);
  transition:width .35s ease;
}
.cf-input:focus ~ .cf-bar{width:100%;}
.cf-privacy{margin-top:1.25rem;margin-bottom:.25rem;}
.cf-privacy-label{display:flex;align-items:center;gap:.6rem;cursor:pointer;font-size:13px;color:var(--c-mid);}
.cf-privacy-check{width:17px;height:17px;accent-color:var(--c-accent);cursor:pointer;flex-shrink:0;}
.cf-privacy-link{color:var(--c-accent);text-decoration:underline;text-underline-offset:2px;}
.cf-privacy-link:hover{opacity:.75;}

.cf-btn{
  position:relative;overflow:hidden;
  margin-top:.5rem;padding:15px 48px;
  background:var(--c-accent);color:#fff;border:none;
  font-family:var(--ff);font-size:12px;font-weight:700;letter-spacing:.14em;
  cursor:pointer;min-width:200px;
  transition:background .3s;
}
.cf-btn:hover{background:#145a72;}
.cf-btn.is-loading{color:transparent;pointer-events:none;}
.cf-btn.is-loading::after{
  content:'';position:absolute;top:50%;left:50%;
  width:18px;height:18px;margin:-9px 0 0 -9px;
  border:2px solid rgba(255,255,255,.3);
  border-top-color:#fff;border-radius:50%;
  animation:cfSpin .75s linear infinite;
}
.cf-btn.is-sent{pointer-events:none;}
.cf-btn-txt{display:block;transition:opacity .2s;}
@keyframes cfSpin{to{transform:rotate(360deg);}}

@media(max-width:767px){
  .cf-row-2{grid-template-columns:1fr;}
}

/* ── Floating Action Buttons — completely separate design ── */
.fab-wrap{
  position:fixed;right:1.75rem;bottom:2rem;
  z-index:150;display:flex;flex-direction:column;align-items:center;gap:.75rem;
  transition:opacity .3s,transform .3s;
}
.fab-wrap.is-hidden{
  opacity:0;pointer-events:none;transform:translateY(12px);
}

/* CONTACT — vivid gradient pill */
.fab-contact{
  display:block;text-decoration:none;
  padding:13px 26px;border-radius:50px;
  background:linear-gradient(135deg,#0077b6 0%,#48cae4 100%);
  color:#fff;
  font-family:'Hiragino Maru Gothic ProN','Arial Rounded MT Bold',system-ui,sans-serif;
  font-size:11px;font-weight:900;letter-spacing:.2em;
  white-space:nowrap;border:none;cursor:pointer;
  box-shadow:0 6px 28px rgba(0,119,182,.5),0 2px 8px rgba(0,0,0,.18);
  animation:fabGlow 2.8s ease-in-out infinite;
  transition:transform .3s cubic-bezier(.175,.885,.32,1.275),box-shadow .3s ease;
}
.fab-contact:hover{
  transform:translateY(-5px) scale(1.07);
  box-shadow:0 16px 44px rgba(0,119,182,.65),0 4px 12px rgba(0,0,0,.22);
  animation:none;
  background:linear-gradient(135deg,#0096c7 0%,#90e0ef 100%);
}
@keyframes fabGlow{
  0%,100%{box-shadow:0 6px 28px rgba(0,119,182,.5),0 2px 8px rgba(0,0,0,.18);}
  50%{box-shadow:0 8px 36px rgba(72,202,228,.75),0 0 0 7px rgba(0,180,216,.18);}
}

/* PAGE TOP — dark circle */
.fab-top{
  width:50px;height:50px;border-radius:50%;
  background:#0d0d1a;
  border:1.5px solid rgba(255,255,255,.1);
  color:rgba(255,255,255,.5);
  font-family:system-ui,sans-serif;font-size:20px;font-weight:300;
  cursor:pointer;padding:0;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 20px rgba(0,0,0,.55),inset 0 1px 0 rgba(255,255,255,.06);
  transition:transform .3s cubic-bezier(.175,.885,.32,1.275),color .2s,box-shadow .3s;
}
.fab-top:hover{
  transform:translateY(-6px);
  color:#fff;
  box-shadow:0 12px 32px rgba(0,0,0,.65),inset 0 1px 0 rgba(255,255,255,.1);
}

/* ── Privacy Modal ── */
.pp-modal-overlay{
  position:fixed;inset:0;background:rgba(0,0,0,.55);
  display:flex;align-items:center;justify-content:center;
  z-index:9998;opacity:0;pointer-events:none;
  transition:opacity .2s;padding:1rem;
}
.pp-modal-overlay.is-open{opacity:1;pointer-events:auto;}
.pp-modal-box{
  background:#fff;border-radius:12px;
  width:100%;max-width:560px;max-height:80vh;
  display:flex;flex-direction:column;
  box-shadow:0 16px 48px rgba(0,0,0,.3);
  transform:translateY(12px);transition:transform .2s;
}
.pp-modal-overlay.is-open .pp-modal-box{transform:translateY(0);}
.pp-modal-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:1.25rem 1.5rem 1rem;
  border-bottom:1px solid var(--c-line);flex-shrink:0;
}
.pp-modal-title{font-size:15px;font-weight:700;color:var(--c-ink);}
.pp-modal-close{
  background:none;border:none;font-size:22px;line-height:1;
  color:var(--c-mute);cursor:pointer;padding:0 4px;
  transition:color .15s;
}
.pp-modal-close:hover{color:var(--c-ink);}
.pp-modal-body{
  padding:1.25rem 1.5rem;overflow-y:auto;flex:1;
  font-size:13px;color:var(--c-mid);line-height:1.85;
}
.pp-modal-body h3{
  font-size:12px;font-weight:700;color:var(--c-accent);
  margin:1.1rem 0 .3rem;letter-spacing:.04em;
}
.pp-modal-body p{margin-bottom:.6rem;}
.pp-modal-foot{
  padding:1rem 1.5rem 1.25rem;border-top:1px solid var(--c-line);
  flex-shrink:0;display:flex;justify-content:flex-end;
}
.pp-modal-agree{
  background:var(--c-accent);color:#fff;border:none;
  padding:.65rem 1.75rem;border-radius:6px;
  font-size:13px;font-weight:600;cursor:pointer;
  transition:background .2s;
}
.pp-modal-agree:hover{background:#145a72;}

/* override: privacy link as button */
.cf-privacy-link{
  background:none;border:none;padding:0;
  color:var(--c-accent);text-decoration:underline;
  text-underline-offset:2px;cursor:pointer;
  font-size:inherit;
}
.cf-privacy-link:hover{opacity:.75;}

@media(max-width:767px){
  .footer-inner{grid-template-columns:1fr;gap:1.5rem;}
  .footer-info{font-size:11px;}
}

/* ── Form Validation ── */
.cf-error{
  position:absolute;bottom:-1.4rem;left:0;
  font-size:10px;color:#c0392b;letter-spacing:.04em;
  opacity:0;transform:translateY(-3px);
  transition:opacity .2s,transform .2s;
  white-space:nowrap;
}
.cf-field.has-error .cf-error{opacity:1;transform:none;}
.cf-field.has-error .cf-input{border-bottom-color:#c0392b;}
.cf-field.has-error .cf-bar{background:#c0392b;width:100%;}
.cf-field.has-error .cf-label{color:#c0392b;}
.cf-field.is-valid::after{
  content:'✓';position:absolute;right:0;top:.85rem;
  color:var(--c-accent);font-size:13px;pointer-events:none;
}
.cf-field.has-error::after{content:none;}
@keyframes cfShake{
  0%,100%{transform:none;}
  20%{transform:translateX(-7px);}
  40%{transform:translateX(7px);}
  60%{transform:translateX(-4px);}
  80%{transform:translateX(4px);}
}

/* ── About Specs ── */
.about-specs{
  list-style:none;
  margin-top:1rem;
  border-top:1px solid var(--c-line);
  padding-top:.75rem;
  display:flex;
  flex-direction:column;
  gap:.45rem;
}
.as-row{
  display:flex;
  justify-content:space-between;
  align-items:baseline;
  font-size:clamp(14px,1.4vw,16px);
}
.as-label{color:var(--c-mute);}
.as-val{font-weight:700;color:var(--c-ink);letter-spacing:.04em;font-size:clamp(16px,1.8vw,20px);}
/* 画像連動：デフォルトは正面図の行を表示、上面図の行は非表示 */
.as-top{display:none;}
/* JS側で .is-top クラスを付与して切り替える */
.about-specs.is-top .as-front{display:none;}
.about-specs.is-top .as-top{display:flex;}

/* ── Patent Badge ── */
.patent-badge{
  display:inline-block;
  margin-top:1.2rem;
  font-size:15px;
  font-weight:900;
  letter-spacing:.02em;
  color:#1e0e00;
  background:linear-gradient(135deg,#f5c83a 0%,#e8a818 50%,#f2bc28 100%);
  border:2px solid rgba(120,70,0,.25);
  border-radius:5px;
  padding:7px 18px;
  box-shadow:0 3px 16px rgba(210,150,0,.45), inset 0 1px 0 rgba(255,255,255,.45);
}
@media(min-width:768px){
  .patent-badge{
    font-size:18px;
    padding:9px 24px;
    letter-spacing:.02em;
    box-shadow:0 4px 24px rgba(210,150,0,.5), inset 0 1px 0 rgba(255,255,255,.45);
  }
}

/* ── Product Gallery ── */
.pg-wrap{
  display:flex;
  gap:10px;
  align-items:flex-start;
}
.pg-thumbs{
  display:flex;
  flex-direction:column;
  gap:8px;
  flex-shrink:0;
}
.pg-thumb{
  width:68px;height:68px;
  border:2px solid transparent;
  border-radius:6px;
  overflow:hidden;
  background:rgba(0,0,0,.04);
  cursor:pointer;
  padding:0;
  transition:border-color .2s;
}
.pg-thumb img{
  width:100%;height:100%;
  object-fit:cover;
  display:block;
}
.pg-thumb.is-active,
.pg-thumb:hover{
  border-color:var(--c-accent);
}
.pg-main{
  flex:1;
  position:relative;
  cursor:zoom-in;
  border-radius:10px;
  overflow:hidden;
  background:rgba(0,0,0,.03);
}
.pg-main-img{
  width:100%;
  aspect-ratio:1/1;
  object-fit:contain;
  display:block;
  transition:opacity .2s;
}
.pg-main-img.is-switching{opacity:0;}
.pg-zoom-hint{
  position:absolute;bottom:8px;right:10px;
  font-size:10px;color:rgba(20,34,48,.4);
  letter-spacing:.05em;pointer-events:none;
  background:rgba(255,255,255,.7);
  padding:2px 6px;border-radius:3px;
}
/* Lightbox */
.pg-lightbox{
  position:fixed;inset:0;z-index:400;
  background:rgba(0,0,0,.88);
  display:flex;align-items:center;justify-content:center;
  opacity:0;pointer-events:none;
  transition:opacity .25s;
}
.pg-lightbox.is-open{
  opacity:1;pointer-events:auto;
}
.pg-lightbox img{
  max-width:90vw;max-height:90vh;
  object-fit:contain;
  border-radius:6px;
  box-shadow:0 20px 60px rgba(0,0,0,.6);
}
.pg-lb-close{
  position:absolute;top:20px;right:24px;
  background:none;border:none;
  color:rgba(255,255,255,.75);
  font-size:36px;line-height:1;
  cursor:pointer;
  transition:color .15s;
}
.pg-lb-close:hover{color:#fff;}
.pg-dots{
  display:none;
  position:absolute;bottom:12px;left:50%;transform:translateX(-50%);
  gap:7px;
}
.pg-dot{
  width:8px;height:8px;border-radius:50%;
  background:rgba(0,0,0,.18);
  cursor:pointer;
  transition:background .2s,transform .2s;
}
.pg-dot.is-active{
  background:var(--c-accent);
  transform:scale(1.25);
}
@media(max-width:640px){
  .pg-wrap{flex-direction:column;}
  .pg-thumbs{display:none;}
  .pg-dots{display:flex;}
  .pg-zoom-hint{display:none;}
}
.cf-field.shake{animation:cfShake .38s ease;}

/* ── Confirm Dialog ── */
.cf-confirm-overlay{
  position:fixed;inset:0;
  background:rgba(0,0,0,.38);
  display:flex;align-items:center;justify-content:center;
  z-index:9999;
  opacity:0;pointer-events:none;
  transition:opacity .18s;
}
.cf-confirm-overlay.is-open{opacity:1;pointer-events:auto;}
.cf-confirm-box{
  background:#f0f0f0;
  border:1px solid #c8c8c8;
  border-radius:8px;
  padding:1.6rem 2rem 1.4rem;
  box-shadow:0 8px 32px rgba(0,0,0,.22);
  min-width:280px;max-width:360px;width:90%;
  transform:scale(.94);
  transition:transform .18s;
}
.cf-confirm-overlay.is-open .cf-confirm-box{transform:scale(1);}
.cf-confirm-msg{
  font-size:14px;font-weight:600;
  color:#1a1a1a;
  margin-bottom:1.25rem;
  line-height:1.5;
}
.cf-confirm-btns{
  display:flex;gap:.6rem;justify-content:flex-end;
}
.cf-confirm-btn{
  padding:.46rem 1.4rem;
  border-radius:5px;
  font-size:13px;font-weight:700;
  cursor:pointer;
  border:1px solid;
  transition:filter .12s;
}
.cf-confirm-btn:hover{filter:brightness(.92);}
.cf-confirm-no{
  background:#e2e2e2;color:#333;border-color:#c0c0c0;
}
.cf-confirm-yes{
  background:var(--c-accent);color:#fff;border-color:var(--c-accent);
}

/* ── Control Center ── */
.cc-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:clamp(2rem,5vw,4rem);
  align-items:start;
}
.cc-main-img{
  width:100%;border-radius:10px;
  object-fit:cover;display:block;
  box-shadow:0 4px 24px rgba(0,0,0,.1);
}
.cc-sub-photos{
  display:grid;
  grid-template-columns:1fr 1fr 1fr;
  gap:.75rem;
  margin-top:.75rem;
}
.cc-sub-photos img{
  width:100%;border-radius:8px;
  object-fit:cover;aspect-ratio:4/3;
  display:block;
  box-shadow:0 2px 10px rgba(0,0,0,.08);
}
.cc-text{}
.cc-specs-table{
  width:100%;border-collapse:collapse;
  font-size:13px;margin-top:.5rem;
}
.cc-specs-table th,
.cc-specs-table td{
  padding:.7rem .9rem;
  border:1px solid var(--c-line);
  vertical-align:top;
  line-height:1.6;
}
.cc-specs-table th{
  background:var(--c-accent-lt);
  color:var(--c-accent);
  font-weight:700;
  white-space:nowrap;
  width:6em;
}
.cc-specs-table td{
  color:var(--c-mid);
}
.cc-main-img,
.cc-sub-photos img{cursor:zoom-in;transition:opacity .15s;}
.cc-main-img:hover,
.cc-sub-photos img:hover{opacity:.85;}
@media(max-width:767px){
  .cc-grid{grid-template-columns:1fr;}
  .cc-sub-photos img{aspect-ratio:3/2;}
}