/* ───────────────────────── Tokens ───────────────────────── */
:root {
  --ink:        #111111;
  --ink-soft:   #4a4a4a;
  --ink-faint:  #8a8a86;
  --paper:      #ffffff;
  --paper-2:    #f5f4f0;   /* warm off-white for alt sections */
  --line:       #e7e5df;
  --line-dark:  #2a2a2a;

  --sans: "Inter", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --jp:   "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;

  --container: 1140px;
  --pad: clamp(20px, 5vw, 40px);
  --section-y: clamp(72px, 11vw, 140px);
}

/* ───────────────────────── Reset ───────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}
.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: var(--pad); }
.muted { color: var(--ink-faint); }

/* ───────────────────────── Buttons ───────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 52px; padding: 0 28px;
  font: 600 15px/1 var(--sans);
  letter-spacing: .02em;
  border: 1.5px solid var(--ink);
  border-radius: 2px;
  cursor: pointer;
  transition: transform .15s ease, background .2s ease, color .2s ease, opacity .2s ease;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--ink); color: var(--paper); }
.btn-primary:hover { background: #000; opacity: .92; }
.btn-ghost { background: transparent; color: var(--ink); min-height: 44px; padding: 0 20px; }
.btn-ghost:hover { background: var(--ink); color: var(--paper); }
.btn:disabled { opacity: .55; cursor: progress; }

/* ───────────────────────── Header ───────────────────────── */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.82);
  backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.wordmark { display: inline-flex; align-items: baseline; gap: 8px; }
.wordmark-en { font-weight: 800; letter-spacing: .14em; font-size: 16px; }
.wordmark-jp { font-family: var(--jp); font-size: 19px; color: var(--ink-soft); }

/* ───────────────────────── Hero ───────────────────────── */
.hero { padding-block: clamp(48px, 8vw, 96px) var(--section-y); }
.hero-grid {
  display: grid; grid-template-columns: 1.05fr .95fr;
  gap: clamp(24px, 5vw, 64px); align-items: center;
}
.kicker {
  font-size: 13px; font-weight: 600; letter-spacing: .22em; text-transform: uppercase;
  color: var(--ink-soft); margin-bottom: 22px;
}
.kicker-jp { font-family: var(--jp); letter-spacing: .12em; }
.hero-title {
  font-weight: 800; letter-spacing: -.025em; line-height: 1.02;
  font-size: clamp(40px, 7vw, 76px);
}
.hero-sub {
  margin-top: 24px; max-width: 30ch;
  font-size: clamp(16px, 2vw, 19px); color: var(--ink-soft);
}
.hero-actions { display: flex; align-items: center; gap: 24px; margin-top: 40px; flex-wrap: wrap; }
.price-tag { display: flex; flex-direction: column; line-height: 1.1; }
.price { font-weight: 800; font-size: 26px; letter-spacing: -.01em; }
.price-note { font-size: 12.5px; letter-spacing: .04em; color: var(--ink-faint); text-transform: uppercase; }

/* Knife photography — multiply drops the white photo backdrops into the page
   so the knives sit on the background with no visible frame */
.hero-visual { position: relative; }
.knife-photo { width: 100%; height: auto; display: block; mix-blend-mode: multiply; }
.photo-panel { margin: 0; padding: 0; }

/* ───────────────────────── Section primitives ───────────────────────── */
.section-kicker {
  font-size: 12.5px; font-weight: 600; letter-spacing: .22em; text-transform: uppercase;
  color: var(--ink-faint); margin-bottom: 16px;
}
.section-kicker.light { color: rgba(255,255,255,.55); }
.section-title {
  font-weight: 800; letter-spacing: -.02em; line-height: 1.05;
  font-size: clamp(28px, 4.5vw, 46px);
}

/* ───────────────────────── Three virtues ───────────────────────── */
.virtues { background: var(--paper-2); padding-block: var(--section-y); text-align: center; }
.virtues-row {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: clamp(16px, 3vw, 32px);
  margin: clamp(36px, 6vw, 64px) auto 0; max-width: 980px;
}
.virtue { margin: 0; }
.virtue-media {
  position: relative; aspect-ratio: 4 / 5; overflow: hidden;
  border-radius: 4px; background: var(--ink);
}
.virtue-media img {
  width: 100%; height: 100%; object-fit: cover; display: block;
  filter: grayscale(100%) contrast(1.04);
  transition: transform .7s ease;
}
.virtue:hover .virtue-media img { transform: scale(1.05); }
.virtue-media::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, .5), rgba(0, 0, 0, 0) 50%);
}
.virtue-jp {
  position: absolute; left: 18px; bottom: 14px; z-index: 1;
  font-family: var(--jp); font-weight: 600; line-height: 1;
  font-size: clamp(40px, 5vw, 56px); color: #fff;
}
.virtue-text { text-align: left; padding-top: 16px; }
.virtue-label { display: block; font-weight: 700; font-size: clamp(17px, 2vw, 20px); letter-spacing: -.01em; }
.virtue-task { display: block; margin-top: 6px; font-size: 14.5px; line-height: 1.5; color: var(--ink-soft); }
.virtues-foot { margin-top: clamp(40px, 6vw, 64px); color: var(--ink-soft); font-size: 17px; }

/* ───────────────────────── Blade / specs ───────────────────────── */
.blade-section { padding-block: var(--section-y); }
.blade-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: clamp(32px, 6vw, 80px); align-items: center;
}
.blade-visual { order: 0; }
.spec { margin-top: 28px; border-top: 1px solid var(--line); }
.spec-row {
  display: grid; grid-template-columns: 110px 1fr; gap: 16px;
  padding: 15px 0; border-bottom: 1px solid var(--line);
}
.spec-row dt { font-size: 12.5px; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-faint); padding-top: 2px; }
.spec-row dd { font-size: 16.5px; font-weight: 500; }
.spec-row dd .muted { font-weight: 400; font-size: 14.5px; }

/* ───────────────────────── Forge (inverted) ───────────────────────── */
.forge { background: var(--ink); color: var(--paper); padding-block: var(--section-y); }
.forge-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: clamp(32px, 6vw, 72px); align-items: center;
}
.forge-media { margin: 0; }
.forge-media img {
  width: 100%; height: auto; display: block; border-radius: 4px;
  filter: grayscale(100%) contrast(1.06);
}
.forge-title {
  font-weight: 800; letter-spacing: -.02em; line-height: 1.08;
  font-size: clamp(28px, 4.5vw, 46px);
}
.forge-steps { list-style: none; margin: 28px 0 0; padding: 0; display: flex; flex-direction: column; gap: 22px; }
.forge-steps li { display: grid; grid-template-columns: 30px 1fr; gap: 14px; align-items: start; }
.forge-steps .step-n { font-weight: 700; font-size: 13px; letter-spacing: .08em; color: rgba(255, 255, 255, .45); padding-top: 4px; }
.forge-steps p { font-size: 15.5px; line-height: 1.55; color: rgba(255, 255, 255, .72); }
.forge-steps b { color: #fff; font-weight: 700; }

/* ───────────────────────── Reserve ───────────────────────── */
.reserve { padding-block: var(--section-y); text-align: center; }
.reserve-inner { max-width: 620px; margin-inline: auto; }
.reserve-sub { margin-top: 16px; color: var(--ink-soft); font-size: 17.5px; }
.reserve-card { margin-top: 36px; }
.field { display: flex; gap: 10px; }
.field input {
  flex: 1; min-width: 0; height: 56px; padding: 0 18px;
  font: 400 16px/1 var(--sans); color: var(--ink);
  background: var(--paper); border: 1.5px solid var(--ink); border-radius: 2px;
  transition: box-shadow .15s ease;
}
.field input::placeholder { color: var(--ink-faint); }
.field input:focus { outline: none; box-shadow: 0 0 0 3px rgba(17,17,17,.14); }
.field .btn { flex: 0 0 auto; }
.form-msg { min-height: 20px; margin-top: 12px; font-size: 14px; text-align: left; }
.form-msg.error { color: #b00020; }
.reserve-fine { margin-top: 14px; font-size: 12.5px; letter-spacing: .05em; color: var(--ink-faint); text-transform: uppercase; }

/* success state */
.success { padding: 8px 0 4px; animation: fade .5s ease; }
.success-mark {
  width: 56px; height: 56px; margin: 0 auto 18px; border-radius: 50%;
  background: var(--ink); color: var(--paper);
  display: grid; place-items: center; font-size: 26px; font-weight: 700;
}
.success h3 { font-size: 24px; font-weight: 800; letter-spacing: -.01em; }
.success p { margin-top: 10px; color: var(--ink-soft); }
.success .success-jp { font-family: var(--jp); color: var(--ink-faint); margin-top: 16px; font-size: 18px; }
@keyframes fade { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* ───────────────────────── Footer ───────────────────────── */
.site-footer { border-top: 1px solid var(--line); padding-block: 48px 56px; }
.footer-inner { text-align: center; display: flex; flex-direction: column; align-items: center; gap: 12px; }
.footer-brand { display: inline-flex; align-items: baseline; gap: 8px; }
.footer-brand .wordmark-en { letter-spacing: .14em; font-size: 14px; }
.footer-jp { font-family: var(--jp); color: var(--ink-soft); font-size: 15px; }
.footer-fine { font-size: 12.5px; letter-spacing: .04em; color: var(--ink-faint); }

/* ───────────────────────── Mobile sticky CTA ───────────────────────── */
.sticky-cta {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 60;
  display: none; align-items: center; justify-content: space-between; gap: 16px;
  padding: 12px 16px calc(12px + env(safe-area-inset-bottom));
  background: rgba(255,255,255,.94);
  backdrop-filter: saturate(140%) blur(12px);
  border-top: 1px solid var(--line);
}
.sticky-cta .btn { flex: 1; }
.sticky-price { font-weight: 800; font-size: 19px; }

/* ───────────────────────── Cookie consent ───────────────────────── */
.cookie-banner {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 80;
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: 14px; padding: 14px 18px calc(14px + env(safe-area-inset-bottom));
  background: var(--ink); color: #fff; border-top: 1px solid var(--line-dark);
}
.cookie-banner[hidden] { display: none; }
.cookie-text { font-size: 13.5px; line-height: 1.5; color: rgba(255, 255, 255, .8); max-width: 64ch; }
.cookie-actions { display: flex; gap: 10px; flex-shrink: 0; }
.cookie-btn { min-height: 40px; padding: 0 20px; font-size: 14px; }
.cookie-banner .btn-ghost { color: #fff; border-color: rgba(255, 255, 255, .4); }
.cookie-banner .btn-ghost:hover { background: #fff; color: var(--ink); }
.cookie-banner .btn-primary { background: #fff; color: var(--ink); border-color: #fff; }
.cookie-banner .btn-primary:hover { opacity: .9; background: #fff; }
@media (max-width: 620px) {
  .cookie-banner { flex-direction: column; align-items: stretch; gap: 12px; }
  .cookie-btn { flex: 1; }
}

/* ───────────────────────── Reveal animation ───────────────────────── */
[data-reveal] { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s ease; }
[data-reveal].in { opacity: 1; transform: none; }

/* ───────────────────────── Responsive ───────────────────────── */
@media (max-width: 880px) {
  .hero-grid { grid-template-columns: 1fr; text-align: left; }
  .hero-visual { order: -1; max-width: 420px; margin-inline: auto; }
  .blade-grid { grid-template-columns: 1fr; }
  .blade-visual { max-width: 440px; margin-inline: auto; }
  .forge-grid { grid-template-columns: 1fr; gap: 28px; }
}
@media (max-width: 620px) {
  .header-cta { display: none; }
  .sticky-cta { display: flex; }
  body { padding-bottom: 76px; }
  .field { flex-direction: column; }
  .field .btn { width: 100%; }
  .hero-actions { gap: 18px; }
  .spec-row { grid-template-columns: 96px 1fr; gap: 12px; }
  .virtues-row { grid-template-columns: 1fr; gap: 28px; max-width: 360px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  [data-reveal] { opacity: 1; transform: none; transition: none; }
  .btn { transition: none; }
}