/* =========================================================
   Tennant20 LP — Stylesheet v2
   Black #0A0A0A | White #FFFFFF | Navy #0D1B2A | Accent #C9963B
   ========================================================= */

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

:root {
  --black:   #0A0A0A;
  --white:   #FFFFFF;
  --navy:    #0D1B2A;
  --accent:  #C9963B;
  --accent-l:#E8B86D;
  --gray:    #6B7280;
  --gray-l:  #9CA3AF;
  --border:  rgba(255,255,255,0.10);
  --border-d:rgba(0,0,0,0.09);
  --ff-serif: 'Cormorant Garamond', Georgia, serif;
  --ff-sans:  'Inter', Helvetica, Arial, sans-serif;
  --max-w:   1200px;
  --pad-v:   96px;
  --pad-sm:  72px;
}

html { scroll-behavior: smooth; font-size: 16px; }
body {
  background: var(--white);
  color: var(--black);
  font-family: var(--ff-sans);
  font-weight: 400;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; height: auto; }
a { text-decoration: none; color: inherit; }

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 48px;
}

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px;
  border-radius: 2px;
  font-family: var(--ff-sans); font-size: 0.875rem; font-weight: 500; letter-spacing: 0.04em;
  cursor: pointer; transition: all 0.25s ease; border: none;
}
.btn-primary { background: var(--accent); color: var(--white); }
.btn-primary:hover { background: var(--accent-l); transform: translateY(-2px); box-shadow: 0 10px 28px rgba(201,150,59,0.35); }
.btn-ghost { background: transparent; color: var(--white); border: 1px solid rgba(255,255,255,0.45); }
.btn-ghost:hover { border-color: var(--white); background: rgba(255,255,255,0.08); }
.btn-outline { background: transparent; color: var(--white); border: 1px solid rgba(255,255,255,0.45); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-large { padding: 18px 44px; font-size: 0.9375rem; }

/* ── Typography ── */
.section-label {
  font-size: 0.6875rem; font-weight: 600; letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 20px;
}
.section-label.light { color: var(--accent-l); }

.section-title {
  font-family: var(--ff-serif); font-size: clamp(2.25rem, 4.5vw, 3.5rem); font-weight: 600;
  line-height: 1.15; color: var(--black); margin-bottom: 20px;
}
.section-title.light { color: var(--white); }
.section-title em { font-style: italic; color: var(--accent); }
.section-title.light em { color: var(--accent-l); }

.section-lead {
  font-size: 0.9375rem; color: var(--gray); max-width: 640px; line-height: 1.7; margin-bottom: 56px;
}
.section-lead.light { color: rgba(255,255,255,0.72); }

/* =========================================================
   REVEAL ANIMATIONS
   ========================================================= */
[data-reveal] {
  opacity: 0;
  transition: opacity 0.8s cubic-bezier(0.25,0.46,0.45,0.94),
              transform 0.8s cubic-bezier(0.25,0.46,0.45,0.94);
}
[data-reveal="fade-up"]    { transform: translateY(44px); }
[data-reveal="fade-left"]  { transform: translateX(44px); }
[data-reveal="fade-right"] { transform: translateX(-44px); }
[data-reveal="scale"]      { transform: scale(0.96); }
[data-reveal].revealed     { opacity: 1; transform: none; }

/* =========================================================
   HEADER
   ========================================================= */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  transition: background 0.35s, box-shadow 0.35s;
}
.site-header.scrolled {
  background: rgba(10,10,10,0.96);
  backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 rgba(255,255,255,0.05);
}
.header-inner {
  max-width: var(--max-w); margin: 0 auto; padding: 0 48px;
  height: 72px; display: flex; align-items: center; justify-content: space-between;
}
.logo { display: flex; flex-direction: column; gap: 2px; }
.logo-main { font-family: var(--ff-serif); font-size: 1.25rem; font-weight: 600; color: var(--white); }
.logo-num { color: var(--accent); }
.logo-sub { font-size: 0.6rem; letter-spacing: 0.18em; text-transform: uppercase; color: rgba(255,255,255,0.4); }
.header-nav { display: flex; align-items: center; gap: 32px; }
.header-nav a { font-size: 0.8125rem; font-weight: 600; color: rgba(255,255,255,0.82); transition: color 0.2s; letter-spacing: 0.02em; }
.header-nav a:hover { color: var(--white); }
.header-nav .nav-cta {
  color: var(--white); font-weight: 700;
  border: 2px solid var(--accent); padding: 8px 22px; border-radius: 2px;
  background: rgba(201,150,59,0.12);
  letter-spacing: 0.04em;
}
.header-nav .nav-cta:hover { background: var(--accent); color: var(--white); border-color: var(--accent); }
.hamburger { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 4px; }
.hamburger span { display: block; width: 24px; height: 1.5px; background: var(--white); transition: all 0.25s; }
.mobile-nav { display: none; flex-direction: column; background: rgba(10,10,10,0.97); backdrop-filter: blur(16px); padding: 16px 48px 28px; gap: 0; }
.mobile-nav.open { display: flex; }
.mobile-nav a { color: rgba(255,255,255,0.7); font-size: 0.9375rem; padding: 14px 0; border-bottom: 1px solid rgba(255,255,255,0.05); }

/* =========================================================
   HERO
   ========================================================= */
.hero {
  position: relative; min-height: 100vh; display: flex; align-items: center;
  overflow: hidden; background: var(--black);
}
.hero-bg { position: absolute; inset: 0; }
.hero-img {
  width: 100%; height: 100%; object-fit: cover; object-position: center;
  opacity: 0.78;
}
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(105deg, rgba(10,10,10,0.88) 0%, rgba(10,10,10,0.52) 55%, rgba(10,10,10,0.22) 100%);
}
.hero-content {
  position: relative; max-width: var(--max-w); margin: 0 auto;
  padding: 0 48px; padding-top: 128px; width: 100%;
}
.hero-eyebrow {
  font-size: 0.6875rem; font-weight: 600; letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 28px;
}
.hero-product-name {
  font-family: var(--ff-serif); font-size: clamp(1.1rem, 2vw, 1.4rem);
  font-weight: 400; letter-spacing: 0.06em; color: rgba(255,255,255,0.55);
  margin-bottom: 20px;
}
.hero-product-name strong { color: var(--accent-l); font-weight: 600; }
.hero-title {
  font-family: var(--ff-serif); font-size: clamp(3rem, 6vw, 5rem);
  font-weight: 600; line-height: 1.1; color: var(--white); margin-bottom: 28px; max-width: 720px;
}
.hero-title em { font-style: italic; color: var(--accent-l); display: block; }
.hero-lead {
  font-size: 1.0625rem; color: rgba(255,255,255,0.65); line-height: 1.85;
  max-width: 560px; margin-bottom: 48px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-dl-note { margin-top: 20px; font-size: 0.775rem; color: rgba(255,255,255,0.32); letter-spacing: 0.01em; }

.hero-scroll {
  position: absolute; bottom: 48px; left: 56px;
  display: flex; flex-direction: column; align-items: center; gap: 12px;
}
.hero-scroll span { font-size: 0.6rem; letter-spacing: 0.22em; text-transform: uppercase; color: rgba(255,255,255,0.35); writing-mode: vertical-rl; }
.scroll-line { width: 1px; height: 64px; background: linear-gradient(to bottom, rgba(255,255,255,0.35), transparent); animation: scrollPulse 2.4s ease-in-out infinite; }
@keyframes scrollPulse {
  0%,100% { opacity: 0.4; transform: scaleY(1); }
  50%      { opacity: 1;   transform: scaleY(1.1); }
}

/* =========================================================
   ADVANTAGE
   ========================================================= */
.advantage { background: var(--white); padding: var(--pad-v) 0 var(--pad-sm); }
.adv-intro { max-width: 760px; margin-bottom: 80px; }
.adv-subtitle {
  font-size: 0.75rem; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 20px;
}
.adv-body { font-size: 1.0625rem; color: var(--gray); line-height: 1.85; margin-bottom: 16px; }
.adv-electrode {
  display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center;
  padding: 72px 0; border-top: 1px solid var(--border-d);
}
.adv-img { width: 100%; height: auto; border-radius: 4px; }
.adv-electrode-text h3 { font-family: var(--ff-serif); font-size: 1.625rem; font-weight: 600; color: var(--black); margin-bottom: 20px; line-height: 1.3; }
.adv-electrode-text p { font-size: 0.9375rem; color: var(--gray); line-height: 1.8; margin-bottom: 16px; }

/* =========================================================
   PROBLEM
   ========================================================= */
.problem { background: #F8F8F6; padding: var(--pad-v) 0; }
.problem-cards { display: grid; grid-template-columns: repeat(3,1fr); gap: 2px; background: var(--border-d); border: 1px solid var(--border-d); }
.problem-card { background: var(--white); padding: 48px 36px; display: flex; flex-direction: column; gap: 16px; }
.problem-card:hover { background: #FAFAF8; }
.problem-card-tag {
  font-size: 0.6875rem; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 4px;
}
.problem-card h3 { font-family: var(--ff-serif); font-size: 1.125rem; font-weight: 600; color: var(--black); line-height: 1.35; }
.problem-card p { font-size: 0.9375rem; color: var(--gray); line-height: 1.78; }

/* =========================================================
   EVIDENCE SLIDER
   ========================================================= */
.evidence { background: var(--black); padding: var(--pad-v) 0; }

/* 2-col layout */
.evidence-layout {
  display: grid; grid-template-columns: 1fr 1.4fr; gap: 80px; align-items: center;
}
.evidence-text-col { }
.evidence-text-col .section-title { margin-bottom: 16px; }
.evidence-lead { font-size: 0.875rem; color: rgba(255,255,255,0.45); line-height: 1.7; margin-bottom: 40px; }
.evidence-slider-col { }

/* スライダー凡例（画像の下に） */
.slider-legend {
  display: flex; justify-content: space-between;
  margin-top: 12px; padding: 0 4px;
}
.slider-legend-item {
  font-size: 0.6875rem; font-weight: 600; letter-spacing: 0.07em;
  text-transform: uppercase; padding: 4px 12px; border-radius: 2px;
}
.slider-legend-os { background: rgba(15,50,110,0.75); color: var(--white); }
.slider-legend-pt { background: rgba(140,90,0,0.75); color: var(--white); }

.slider-wrapper { margin: 0 auto; max-width: 860px; padding: 0 48px; margin-bottom: 40px; }
.slider-wrapper--sm { max-width: 620px; }
.slider-container {
  position: relative; width: 100%;
  aspect-ratio: 741 / 578;
  overflow: hidden; border-radius: 4px;
  cursor: col-resize; user-select: none;
  box-shadow: 0 24px 64px rgba(0,0,0,0.6);
}

.slide-after,
.slide-before {
  position: absolute; inset: 0;
  background-image: url('images/slider-comparison.webp');
  background-size: 200% auto;
  background-repeat: no-repeat;
  background-position: 100% center;
  filter: contrast(1.08) brightness(1.06);
}
.slide-before {
  background-position: 0% center;
  clip-path: inset(0 50% 0 0);
}

/* Labels INSIDE their panels — clip with the panel */
.slide-label {
  position: absolute; top: 14px;
  font-family: var(--ff-sans); font-size: clamp(0.55rem, 1.1vw, 0.72rem);
  font-weight: 600; letter-spacing: 0.07em; text-transform: uppercase;
  padding: 5px 12px; border-radius: 2px; pointer-events: none; white-space: nowrap;
}
.slide-label-before { left: 14px; background: rgba(140,90,0,0.85); color: var(--white); }
.slide-label-after  { right: 14px; background: rgba(15,50,110,0.85); color: var(--white); }

.slider-handle {
  position: absolute; top: 0; bottom: 0; left: 50%;
  transform: translateX(-50%); z-index: 5;
  display: flex; flex-direction: column; align-items: center; pointer-events: none;
}
.handle-line { flex: 1; width: 2px; background: rgba(255,255,255,0.9); }
.handle-circle {
  width: 48px; height: 48px; border-radius: 50%; background: var(--white);
  display: flex; align-items: center; justify-content: center; gap: 2px; flex-shrink: 0;
  box-shadow: 0 4px 20px rgba(0,0,0,0.45); pointer-events: all; cursor: col-resize;
}
.handle-circle svg { color: var(--black); }

/* Observation conditions */
.evidence-obs { margin-top: 0; }
.obs-row {
  display: flex; flex-direction: column; gap: 6px; flex-wrap: wrap;
  margin-bottom: 8px;
}
.obs-item { font-size: 0.75rem; color: rgba(255,255,255,0.45); }
.obs-item strong { color: rgba(255,255,255,0.7); font-weight: 500; margin-right: 4px; }
.obs-sep { color: rgba(255,255,255,0.2); font-size: 0.75rem; }
.obs-credit { font-size: 0.7rem; color: rgba(255,255,255,0.28); margin-top: 8px; letter-spacing: 0.01em; }

/* =========================================================
   TECHNOLOGY
   ========================================================= */
.technology { background: var(--white); padding: var(--pad-v) 0; }

/* New 2-col layout */
.tech-layout {
  display: grid; grid-template-columns: 420px 1fr; gap: 64px; align-items: center;
  margin-top: 48px;
}
.tech-product-col { display: flex; align-items: center; justify-content: center; }
.tech-product-img {
  max-width: 100%; height: auto;
  filter: drop-shadow(0 24px 48px rgba(0,0,0,0.18));
}
.tech-cards-col { display: flex; flex-direction: column; gap: 2px; }
.tech-card-h {
  display: flex; align-items: flex-start; gap: 20px;
  padding: 28px 32px;
  background: var(--white); border: 1px solid var(--border-d);
  transition: background 0.25s, border-color 0.25s;
}
.tech-card-h:hover { background: #FAFAF8; border-color: rgba(201,150,59,0.22); }
.tech-card-h-icon {
  width: 44px; height: 44px; flex-shrink: 0;
  border: 1px solid var(--border-d); border-radius: 2px;
  display: flex; align-items: center; justify-content: center;
  color: var(--accent); margin-top: 2px;
  transition: border-color 0.25s, background 0.25s;
}
.tech-card-h:hover .tech-card-h-icon { border-color: var(--accent); background: rgba(201,150,59,0.06); }
.tech-card-h-content h3 {
  font-family: var(--ff-serif); font-size: 1.25rem; font-weight: 600;
  color: var(--black); margin-bottom: 8px; line-height: 1.3;
}
.tech-card-h-content p { font-size: 0.875rem; color: var(--gray); line-height: 1.7; }

/* legacy grid (not used) */
.tech-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  border: 1px solid var(--border-d); margin-bottom: 64px;
}
.tech-card {
  padding: 40px 32px; border-right: 1px solid var(--border-d);
  transition: background 0.3s;
}
.tech-card:last-child { border-right: none; }
.tech-card:hover { background: #FAFAFA; }
.tech-icon {
  width: 48px; height: 48px; border: 1px solid var(--border-d); border-radius: 2px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 24px; color: var(--accent);
}
.tech-card h3 { font-family: var(--ff-serif); font-size: 1.0625rem; font-weight: 500; color: var(--black); margin-bottom: 12px; line-height: 1.3; }
.tech-card p { font-size: 0.875rem; color: var(--gray); line-height: 1.7; }

/* (electrode section moved to advantage) */

.electrode-stats { margin-top: 32px; padding-top: 28px; border-top: 1px solid var(--border-d); }
.estat-heading {
  font-family: var(--ff-sans); font-size: 0.75rem; font-weight: 700;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 28px;
}
.estat-row { display: flex; align-items: center; gap: 40px; }
.estat { text-align: center; }
.estat-label { font-size: 0.8125rem; color: var(--gray); margin-bottom: 8px; line-height: 1.4; }
.estat-num { font-family: var(--ff-serif); font-size: 3.5rem; font-weight: 700; color: var(--black); line-height: 1; }
.estat-num span { font-size: 1.25rem; font-weight: 400; color: var(--gray); margin-left: 4px; }
.estat-divider { width: 1px; height: 64px; background: var(--border-d); }

.product-showcase { text-align: center; }
.product-showcase-img {
  max-height: 420px; width: auto;   /* AR維持 */
  margin: 0 auto; border-radius: 4px;
}

/* =========================================================
   EVENT
   ========================================================= */
.event { background: var(--navy); padding: var(--pad-sm) 0; position: relative; overflow: hidden; }
.event::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(ellipse at 75% 40%, rgba(201,150,59,0.09) 0%, transparent 55%);
  pointer-events: none;
}
.event-inner { position: relative; }
.event-badge {
  display: inline-block; font-size: 0.6875rem; font-weight: 600; letter-spacing: 0.2em;
  text-transform: uppercase; color: var(--accent);
  border: 1px solid rgba(201,150,59,0.4); padding: 6px 16px; border-radius: 2px; margin-bottom: 28px;
}
.event-conf { font-family: var(--ff-sans); font-size: 0.8125rem; font-weight: 500; letter-spacing: 0.12em; color: rgba(255,255,255,0.45); margin-bottom: 14px; }
.event-title { font-family: var(--ff-serif); font-size: clamp(2.25rem, 4.5vw, 3.5rem); font-weight: 600; color: var(--white); line-height: 1.15; margin-bottom: 32px; font-variant-numeric: lining-nums; }
.event-meta { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 64px; }
.event-meta-item { display: flex; align-items: center; gap: 7px; font-size: 0.875rem; color: rgba(255,255,255,0.72); }
.event-meta-item strong { color: var(--accent-l); font-weight: 500; }
.event-meta-sep { color: rgba(255,255,255,0.18); }
.event-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-bottom: 48px; }
.event-card {
  background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.09);
  border-radius: 4px; padding: 48px 40px;
  transition: background 0.3s, border-color 0.3s;
}
.event-card:hover { background: rgba(255,255,255,0.07); }
.event-card h3 { font-family: var(--ff-serif); font-size: 1.25rem; font-weight: 600; color: var(--white); margin-bottom: 14px; }
.event-card p { font-size: 0.9rem; color: rgba(255,255,255,0.65); line-height: 1.78; margin-bottom: 28px; }
.event-card-btns { display: flex; gap: 12px; flex-wrap: wrap; }
.event-card-partner { border-color: rgba(201,150,59,0.22); }
.event-card-info { display: flex; flex-direction: column; gap: 20px; }
.event-card-icon { color: var(--accent-l); opacity: 0.7; }
.partner-badge { font-size: 0.6875rem; font-weight: 600; letter-spacing: 0.15em; text-transform: uppercase; color: var(--accent); margin-bottom: 14px; }
.floor-link {
  display: inline-flex; align-items: center; gap: 7px; font-size: 0.8125rem;
  color: rgba(255,255,255,0.38); border-bottom: 1px solid transparent; transition: color 0.2s, border-color 0.2s;
}
.floor-link:hover { color: var(--accent-l); border-bottom-color: var(--accent-l); }

/* =========================================================
   SPEC
   ========================================================= */
.spec { background: var(--white); padding: var(--pad-v) 0; }
.spec-layout { display: grid; grid-template-columns: 1.1fr 1fr; gap: 80px; align-items: start; }
.spec-subtitle { font-size: 0.75rem; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: var(--gray); margin-bottom: 20px; }
.spec-table { width: 100%; border-collapse: collapse; }
.spec-table th, .spec-table td { padding: 15px 20px; font-size: 0.9rem; border-bottom: 1px solid var(--border-d); text-align: left; vertical-align: top; }
.spec-table th { font-weight: 500; color: var(--gray); width: 40%; }
.spec-table tr:first-child th, .spec-table tr:first-child td { border-top: 1px solid var(--border-d); }
.mij-badge {
  display: flex; gap: 20px; align-items: flex-start;
  background: var(--black); color: var(--white); padding: 32px; border-radius: 4px; margin-bottom: 40px;
}
.mij-icon { flex-shrink: 0; margin-top: 2px; }
.mij-text strong { display: block; font-family: var(--ff-serif); font-size: 1.125rem; font-weight: 600; margin-bottom: 8px; }
.mij-text p { font-size: 0.875rem; color: rgba(255,255,255,0.5); line-height: 1.7; }
.feature-list { margin-bottom: 40px; }
.feature-list ul { list-style: none; display: flex; flex-direction: column; gap: 13px; }
.feature-list li { display: flex; align-items: flex-start; gap: 12px; font-size: 0.9rem; color: var(--gray); }
.feature-list li svg { color: var(--accent); flex-shrink: 0; margin-top: 3px; }
.product-thumb-wrap { text-align: center; }
.product-thumb { max-height: 220px; width: auto; margin: 0 auto; }

/* =========================================================
   CONTACT
   ========================================================= */
.contact-section { background: var(--black); padding: var(--pad-v) 0; }
.hero-dl-note { margin-top: 16px; font-size: 0.775rem; color: rgba(255,255,255,0.3); }

/* Contact intro */
.contact-intro { max-width: 720px; margin-bottom: 56px; }
.contact-tagline { font-family: var(--ff-serif); font-size: 1.375rem; font-style: italic; color: var(--accent-l); margin-bottom: 20px; line-height: 1.4; }
.contact-desc { font-size: 1rem; color: rgba(255,255,255,0.65); line-height: 1.8; margin-bottom: 28px; }
.contact-sub-en { font-size: 0.875rem; font-weight: 600; color: rgba(255,255,255,0.5); letter-spacing: 0.04em; margin-bottom: 12px; }
.contact-checklist { list-style: none; display: flex; flex-direction: column; gap: 10px; margin-bottom: 24px; }
.contact-checklist li { display: flex; align-items: baseline; gap: 10px; font-size: 0.9375rem; color: rgba(255,255,255,0.6); }
.chk { flex-shrink: 0; }
.contact-closing { font-size: 0.9375rem; color: rgba(255,255,255,0.45); line-height: 1.75; }

/* Download panel */
.download-panel { margin-bottom: 56px; animation: panelIn 0.55s cubic-bezier(0.25,0.46,0.45,0.94) forwards; }
@keyframes panelIn { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: none; } }
.dl-panel-inner {
  display: flex; align-items: center; gap: 28px; flex-wrap: wrap;
  background: linear-gradient(135deg, rgba(201,150,59,0.13) 0%, rgba(201,150,59,0.04) 100%);
  border: 1px solid rgba(201,150,59,0.42); border-radius: 4px; padding: 40px 44px;
}
.dl-icon { width: 64px; height: 64px; border-radius: 50%; background: rgba(201,150,59,0.15); color: var(--accent); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.dl-text { flex: 1; min-width: 200px; }
.dl-text h3 { font-family: var(--ff-serif); font-size: 1.25rem; font-weight: 600; color: var(--white); margin-bottom: 8px; }
.dl-text p { font-size: 0.875rem; color: rgba(255,255,255,0.65); line-height: 1.7; }
.dl-btn { white-space: nowrap; flex-shrink: 0; }

/* Form */
.contact-form-wrap {
  max-width: 760px; background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08); border-radius: 4px; padding: 56px 60px;
}
.contact-form { display: flex; flex-direction: column; gap: 28px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-group { display: flex; flex-direction: column; gap: 8px; }
.form-group label { font-size: 0.8125rem; font-weight: 500; color: rgba(255,255,255,0.75); letter-spacing: 0.02em; }
.required { color: var(--accent); }
.form-group input, .form-group select, .form-group textarea {
  background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.22);
  border-radius: 2px; padding: 13px 16px; font-family: var(--ff-sans); font-size: 0.9375rem;
  color: var(--white); transition: border-color 0.2s, background 0.2s; outline: none; width: 100%;
}
.form-group input::placeholder, .form-group textarea::placeholder { color: rgba(255,255,255,0.45); }
.form-group input, .form-group select, .form-group textarea { color: var(--white); }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: var(--accent); background: rgba(255,255,255,0.07);
}
.form-group select option { background: #1a1a1a; color: var(--white); }
.form-group textarea { resize: vertical; }
.form-check .check-label { display: flex; align-items: center; gap: 12px; cursor: pointer; font-size: 0.875rem; color: rgba(255,255,255,0.65); }
.form-check input[type="checkbox"] { width: 16px; height: 16px; accent-color: var(--accent); flex-shrink: 0; }
.form-submit { display: flex; }
.form-submit .btn { min-width: 200px; justify-content: center; }
.form-message { font-size: 0.875rem; padding: 12px 0; display: none; }
.form-message.success { color: #6ee7b7; display: block; }
.form-message.error   { color: #fca5a5; display: block; }

/* GDPR consent block */
.gdpr-block { margin-top: 8px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,0.07); display: flex; flex-direction: column; gap: 12px; }
.form-check--required .check-label { color: rgba(255,255,255,0.65); }
.form-check--required input[type="checkbox"] { accent-color: var(--accent); }
.req-mark { color: #fca5a5; margin-left: 2px; }
.gdpr-note { font-size: 0.75rem; color: rgba(255,255,255,0.52); line-height: 1.65; padding: 12px 0 4px; }
.gdpr-note a.link-inline { color: rgba(255,255,255,0.45); text-decoration: underline; text-underline-offset: 2px; }
.gdpr-note a.link-inline:hover { color: var(--accent-l); }
a.link-inline,
a.link-inline:visited { color: var(--accent-l) !important; text-decoration: underline; text-underline-offset: 2px; }
a.link-inline:hover { color: var(--accent) !important; }

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer { background: #050505; padding: 80px 0 40px; border-top: 1px solid rgba(255,255,255,0.04); }
.footer-inner { display: flex; justify-content: space-between; gap: 60px; margin-bottom: 64px; flex-wrap: wrap; }
.footer-logo { font-family: var(--ff-serif); font-size: 1.375rem; font-weight: 600; color: var(--white); }
.footer-logo span { color: var(--accent); }
.footer-brand p { font-size: 0.8125rem; color: rgba(255,255,255,0.55); margin-top: 6px; }
.footer-company { margin-top: 12px !important; color: rgba(255,255,255,0.65) !important; font-weight: 500; }
.footer-links { display: flex; gap: 80px; }
.footer-col { display: flex; flex-direction: column; gap: 12px; }
.footer-col h4 { font-size: 0.6875rem; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: rgba(255,255,255,0.55); margin-bottom: 4px; }
.footer-col a { font-size: 0.875rem; color: rgba(255,255,255,0.65); transition: color 0.2s; }
.footer-col a:hover { color: var(--white); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; padding-top: 32px; border-top: 1px solid rgba(255,255,255,0.05); }
.footer-bottom p { font-size: 0.8125rem; color: rgba(255,255,255,0.48); }
.footer-legal { max-width: 400px; text-align: right; }

/* =========================================================
   RESPONSIVE
   ========================================================= */
/* =========================================================
   ADVANTAGE — new image + columns layout
   ========================================================= */
.adv-q {
  font-family: var(--ff-serif); font-size: 1.375rem; font-weight: 500;
  color: var(--black); margin-bottom: 12px; line-height: 1.3;
}
.adv-two-col {
  display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center;
  padding: 64px 0 0; border-top: 1px solid var(--border-d);
}
.adv-img-col { }
.adv-glow-img {
  width: 100%; height: auto; border-radius: 4px;
  box-shadow: 0 16px 48px rgba(0,0,0,0.10);
}
.adv-text-col { }
.adv-heading {
  font-family: var(--ff-serif); font-size: clamp(1.5rem, 2.5vw, 2rem); font-weight: 600;
  color: var(--black); margin-bottom: 16px; line-height: 1.25;
}
.adv-text-col p { font-size: 0.875rem; color: var(--gray); line-height: 1.7; margin-bottom: 12px; }
/* legacy - keep for compat */
.adv-img-wrap { text-align: center; margin: 0 0 64px; }
.adv-center-img { width: 100%; max-width: 720px; height: auto; margin: 0 auto; border-radius: 4px; }
.adv-text-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; padding: 64px 0 0; border-top: 1px solid var(--border-d); }
.adv-col-text h3 { font-family: var(--ff-serif); font-size: 1.375rem; font-weight: 500; color: var(--black); margin-bottom: 16px; line-height: 1.3; }
.adv-col-text p { font-size: 0.875rem; color: var(--gray); line-height: 1.7; margin-bottom: 12px; }

/* =========================================================
   COMPARISON IMAGES SECTION
   ========================================================= */
.comp-section { background: var(--white); padding: var(--pad-sm) 0 0; }
.comp-theme { padding: 64px 0; border-top: 1px solid var(--border-d); }
.comp-theme--alt { background: #F8F8F6; }

/* Top row: card (left) + catch (right) */
.comp-theme-top {
  display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: end;
  margin-bottom: 40px;
}
.comp-card-text {
  background: var(--white); border: 1px solid var(--border-d);
  border-radius: 4px; padding: 36px 40px;
}
.comp-theme--alt .comp-card-text { background: #F8F8F6; }
.comp-tag {
  display: inline-block; font-size: 0.6875rem; font-weight: 700; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--accent);
  border: 1px solid rgba(201,150,59,0.4); padding: 5px 14px; border-radius: 2px; margin-bottom: 16px;
}
.comp-card-body { font-size: 0.875rem; color: var(--gray); line-height: 1.7; }
.comp-catch-wrap { display: flex; align-items: center; }
.comp-catch {
  font-family: var(--ff-serif); font-size: clamp(1.875rem, 3.5vw, 2.75rem);
  font-weight: 600; color: var(--black); line-height: 1.15;
}

/* Bottom row: image 70% (left) + english text 30% (right) */
.comp-theme-bottom {
  display: grid; grid-template-columns: 70fr 30fr; gap: 40px; align-items: start;
}
.comp-img-col { position: relative; }
.comp-img-labels {
  position: absolute; top: 14px; left: 0; right: 0; z-index: 3;
  display: flex; justify-content: space-between; padding: 0 20px; pointer-events: none;
}
.comp-img-label {
  font-size: 0.75rem; font-weight: 700; letter-spacing: 0.07em; text-transform: uppercase;
  padding: 5px 14px; border-radius: 2px; color: var(--white);
}
.comp-img-label--os  { background: rgba(15,50,110,0.85); }
.comp-img-label--sp  { background: rgba(120,70,0,0.85); }
.comp-en-col { padding-top: 4px; }
.comp-en-text {
  font-size: 0.8125rem; color: var(--gray); line-height: 1.85;
}

/* Zoom / Magnifier */
.zoom-container { position: relative; overflow: hidden; cursor: crosshair; line-height: 0; }
.zoom-container .comp-img { width: 100%; height: auto; display: block; }
.zoom-lens {
  position: absolute; border: 2px solid rgba(255,255,255,0.9);
  border-radius: 50%; width: 160px; height: 160px;
  background-repeat: no-repeat; display: none; pointer-events: none;
  box-shadow: 0 4px 24px rgba(0,0,0,0.55), inset 0 0 0 1px rgba(255,255,255,0.25);
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
  filter: contrast(1.18) brightness(1.04) saturate(1.05);
}
.zoom-hint {
  position: absolute; bottom: 12px; right: 14px; z-index: 4;
  display: flex; align-items: center; gap: 5px;
  font-size: 0.6875rem; color: rgba(255,255,255,0.75); font-weight: 500; letter-spacing: 0.04em;
  background: rgba(0,0,0,0.45); padding: 5px 10px; border-radius: 2px;
  pointer-events: none; transition: opacity 0.3s;
}
.zoom-container:hover .zoom-hint { opacity: 0; }

/* =========================================================
   TESTIMONIALS
   ========================================================= */
.testimonials { background: #F8F8F6; padding: var(--pad-sm) 0; }
.testi-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 32px; margin-top: 48px;
}
.testi-card {
  background: var(--white); border: 1px solid var(--border-d);
  border-radius: 4px; overflow: hidden;
  display: flex; flex-direction: column;
}
.testi-photo-wrap { width: 100%; overflow: hidden; }
.testi-photo { width: 100%; height: auto; display: block; }
.testi-body { padding: 40px 40px 44px; flex: 1; display: flex; flex-direction: column; }
.testi-quote-mark {
  font-family: var(--ff-serif); font-size: 4rem; line-height: 0.8;
  color: var(--accent); margin-bottom: 20px; opacity: 0.5;
}
.testi-text {
  font-size: 0.875rem; color: var(--gray); line-height: 1.7;
  flex: 1; margin-bottom: 24px;
}
.testi-name {
  font-size: 0.8125rem; font-weight: 600; color: var(--black);
  line-height: 1.5; border-top: 1px solid var(--border-d); padding-top: 20px;
}

/* =========================================================
   STATS BLOCK
   ========================================================= */
.stats-block { background: var(--black); padding: var(--pad-sm) 0; }
.stats-grid {
  display: grid; grid-template-columns: repeat(4,1fr);
  gap: 2px; background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.06);
}
.stat-item {
  background: var(--black); padding: 40px 28px; text-align: center;
  border-right: 1px solid rgba(255,255,255,0.06);
  transition: background 0.3s;
}
.stat-item:last-child { border-right: none; }
.stat-item:hover { background: #111; }
.stat-num {
  font-family: var(--ff-serif); font-size: clamp(2.5rem, 4vw, 3.75rem);
  font-weight: 700; color: var(--accent); line-height: 1; margin-bottom: 16px;
}
.stat-unit { font-size: 1.25rem; font-weight: 400; color: var(--accent-l); margin-left: 2px; }
.stat-unit--pre { font-size: 1.125rem; margin-left: 0; margin-right: 1px; }
.stat-label {
  font-size: 0.8125rem; font-weight: 600; color: rgba(255,255,255,0.75);
  letter-spacing: 0.04em; margin-bottom: 8px;
}
.stat-desc { font-size: 0.8rem; color: rgba(255,255,255,0.35); line-height: 1.5; }

/* =========================================================
   SIMPLIFIED FORM
   ========================================================= */
.form-lead-text {
  font-family: var(--ff-serif); font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 600; color: var(--white); margin-bottom: 40px; line-height: 1.2;
}
.contact-form--simple {
  display: flex; flex-direction: column; gap: 20px;
  max-width: 540px;
}
.contact-form--simple .form-group input {
  font-size: 1rem; padding: 16px 20px;
}
.form-below-text {
  margin-top: 20px; font-size: 0.8125rem;
  color: rgba(255,255,255,0.35); line-height: 1.8; max-width: 540px;
}

/* =========================================================
   IMC21 TITLE
   ========================================================= */
.imc-title-row { white-space: nowrap; display: inline; }
.imc-letters { display: inline; font-size: 1em; }
.imc-num { display: inline; font-size: 1em; font-variant-numeric: lining-nums; }
.event-title .event-sub { color: var(--accent-l); display: block; font-size: 0.65em; margin-top: 6px; }

/* =========================================================
   FLOW SECTION
   ========================================================= */
.flow-section {
  background: var(--black); padding: var(--pad-sm) 0;
  position: relative; overflow: hidden;
}
.flow-section::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(ellipse at 50% 100%, rgba(201,150,59,0.07) 0%, transparent 60%);
  pointer-events: none;
}
.flow-steps {
  display: flex; align-items: center; justify-content: center; gap: 0;
  margin-top: 48px; position: relative;
}
.flow-step {
  flex: 1; max-width: 280px; text-align: center; padding: 40px 28px;
  background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.07);
  border-radius: 4px;
  transition: background 0.3s, border-color 0.3s;
}
.flow-step:hover { background: rgba(255,255,255,0.06); border-color: rgba(201,150,59,0.22); }
.flow-step-icon {
  width: 56px; height: 56px; margin: 0 auto 20px;
  border: 1px solid rgba(201,150,59,0.35); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--accent);
}
.flow-step-num {
  font-size: 0.625rem; font-weight: 700; letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 10px;
}
.flow-step-title {
  font-family: var(--ff-serif); font-size: 1.375rem; font-weight: 600;
  color: var(--white); margin-bottom: 12px; line-height: 1.2;
}
.flow-step-sub { font-size: 0.8125rem; color: rgba(255,255,255,0.42); line-height: 1.6; }
.flow-arrow {
  flex-shrink: 0; padding: 0 12px;
  color: rgba(201,150,59,0.4);
  display: flex; align-items: center;
}

/* =========================================================
   CONTACT CTA CHOOSE
   ========================================================= */
.contact-cta-choose {
  display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 48px;
}
.cta-choose-btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 18px 40px; border-radius: 2px;
  font-family: var(--ff-sans); font-size: 0.9375rem; font-weight: 500;
  cursor: pointer; transition: all 0.25s; letter-spacing: 0.02em; border: none;
}
.cta-choose-btn--primary { background: var(--accent); color: var(--white); }
.cta-choose-btn--primary:hover { background: var(--accent-l); transform: translateY(-2px); box-shadow: 0 10px 28px rgba(201,150,59,0.35); }
.cta-choose-btn--outline { background: transparent; color: var(--white); border: 1px solid rgba(255,255,255,0.4); }
.cta-choose-btn--outline:hover { border-color: var(--accent); color: var(--accent); }

@media (max-width: 1100px) {
  .tech-layout { grid-template-columns: 340px 1fr; gap: 48px; }
}
@media (max-width: 1024px) {
  .container { padding: 0 32px; }
  .header-inner { padding: 0 32px; }
  .adv-electrode { grid-template-columns: 1fr; gap: 40px; }
  .adv-two-col { grid-template-columns: 1fr; gap: 40px; }
  .adv-text-cols { grid-template-columns: 1fr; gap: 40px; }
  .problem-cards { grid-template-columns: 1fr; }
  .problem-card { border-right: none; border-bottom: 1px solid var(--border-d); }
  .spec-layout { grid-template-columns: 1fr; gap: 48px; }
  .tech-layout { grid-template-columns: 1fr; }
  .tech-product-col { max-width: 340px; margin: 0 auto; }
  .tech-grid { grid-template-columns: 1fr; }
  .tech-card { border-right: none; border-bottom: 1px solid var(--border-d); }
  .tech-card:last-child { border-bottom: none; }
  .contact-form-wrap { padding: 40px 32px; }
  .event-cards { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2,1fr); }
  .stat-item:nth-child(2) { border-right: none; }
  .comp-theme-top { grid-template-columns: 1fr; gap: 24px; }
  .comp-theme-bottom { grid-template-columns: 1fr; gap: 24px; }
  .testi-grid { grid-template-columns: 1fr; }
  .evidence-layout { grid-template-columns: 1fr; gap: 48px; }
  .flow-steps { flex-direction: column; align-items: center; gap: 0; }
  .flow-step { max-width: 400px; width: 100%; }
  .flow-arrow { transform: rotate(90deg); padding: 4px 0; justify-content: center; }
}
@media (max-width: 768px) {
  :root { --pad-v: 64px; --pad-sm: 48px; }
  .header-nav { display: none; }
  .hamburger { display: flex; }
  .hero-content { padding: 0 24px; padding-top: 104px; }
  .hero-scroll { display: none; }
  .container { padding: 0 24px; }
  .form-row { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; gap: 40px; }
  .footer-links { flex-direction: column; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .footer-legal { text-align: center; }
  .slider-wrapper { padding: 0 24px; }
  .estat-row { flex-direction: column; gap: 20px; }
  .estat-divider { width: 40px; height: 1px; }
  .contact-form-wrap { padding: 32px 24px; }
  .header-inner { padding: 0 24px; }
  .mobile-nav { padding: 16px 24px 28px; }
  .dl-panel-inner { flex-direction: column; text-align: center; }
  .event-card-btns { flex-direction: column; }
  .obs-sep { display: none; }
  .stats-grid { grid-template-columns: repeat(2,1fr); }
  .stat-item { border-right: 1px solid rgba(255,255,255,0.06); border-bottom: 1px solid rgba(255,255,255,0.06); }
  .comp-img-labels { padding: 0 12px; }
  .comp-img-label { font-size: 0.6rem; padding: 4px 8px; }
  .contact-cta-choose { flex-direction: column; }
  .cta-choose-btn { justify-content: center; }
  .testi-body { padding: 24px 20px 28px; }
  .comp-catch { font-size: 1.375rem; }
  .form-lead-text { font-size: 1.625rem; }
  .event-meta { flex-direction: column; gap: 8px; }
  .event-meta-sep { display: none; }
  .flow-section .section-label { text-align: center; }
}