/* =========================================================
   朱路 SHURO — Toki Color / 夜明けに開く
   ========================================================= */

:root {
  /* 本編：中性的な柿色・朱茶の世界 */
  --paper:      #f7f1e3;
  --cream:      #ece1c9;
  --cream-soft: #dfd0b1;
  --ivory:      #fbf6ea;

  --toki-pale:  #efd8c5;
  --toki-soft:  #dfb79a;
  --toki:       #c98a6e;
  --toki-mid:   #a85a3e;
  --toki-deep:  #8b3f26;
  --toki-blood: #5a2615;

  --vermillion: #b85c3c;
  --ember:      #c87050;
  --gold:       #b38a4e;

  --sumi:       #2a241f;
  --sumi-soft:  #55463a;
  --sumi-faint: #8a7a6e;

  --mist:       rgba(42, 36, 31, 0.48);
  --whisper:    rgba(42, 36, 31, 0.30);
  --ghost:      rgba(42, 36, 31, 0.14);
  --hairline:   rgba(42, 36, 31, 0.10);
  --glow:       rgba(201, 138, 110, 0.38);

  --font-serif: 'Shippori Mincho', 'Yu Mincho', serif;
  --font-sans:  'Zen Kaku Gothic New', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-latin: 'Cormorant Garamond', serif;

  --max: 1180px;
  --gutter: 28px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
*::selection { background: var(--toki); color: var(--sumi); }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background: var(--paper);
  color: var(--sumi);
  line-height: 1.85;
  font-weight: 400;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; color: inherit; background: none; border: none; cursor: pointer; }
img { max-width: 100%; display: block; }
.nowrap { white-space: nowrap; }

/* =========================================================
   PRELOADER
   黒 → 深紅 → 朱 → 朱鷺 → 淡色  (夜明けの演出)
   ========================================================= */
#preloader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  overflow: hidden;
  background: #020203;
  animation: preloaderFade 1.2s ease 4.6s forwards;
}
#preloader.done { opacity: 0; visibility: hidden; pointer-events: none; }

/* 夜明け背景 — 3レイヤーを opacity で補間し、滑らかに遷移させる */
.pre-sky-base,
.pre-sky-warm,
.pre-sky-dark {
  position: absolute;
  inset: 0;
}
.pre-sky-base {
  background: radial-gradient(ellipse at 50% 50%, #e8dcc4 0%, #c49d81 90%);
}
.pre-sky-warm {
  background: radial-gradient(ellipse at 50% 50%, #a85a3e 0%, #2a1208 85%);
  opacity: 0;
  animation: warmGlow 4.8s ease-in-out forwards;
}
.pre-sky-dark {
  background: radial-gradient(ellipse at 50% 50%, #0b0806 0%, #040302 85%);
  animation: darkFade 4.8s cubic-bezier(0.35, 0, 0.4, 1) forwards;
}

@keyframes darkFade {
  0%   { opacity: 1; }
  40%  { opacity: 0.95; }
  100% { opacity: 0; }
}
@keyframes warmGlow {
  0%   { opacity: 0; }
  25%  { opacity: 0; }
  55%  { opacity: 0.72; }
  100% { opacity: 0; }
}

/* 水面の線 */
.pre-surface {
  position: absolute;
  left: 0; right: 0;
  top: 50%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(139, 63, 38, 0.35) 20%, rgba(168, 90, 62, 0.55) 50%, rgba(139, 63, 38, 0.35) 80%, transparent);
  opacity: 0;
  transform: scaleX(0.3);
  animation: surfaceGlow 3.6s ease 1.2s forwards;
}
@keyframes surfaceGlow {
  0%   { opacity: 0; transform: scaleX(0.2); }
  20%  { opacity: 1; transform: scaleX(1); }
  50%  { opacity: 0.6; }
  100% { opacity: 0; }
}

/* 落ちる水滴 */
.droplet {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 18px;
  height: 30px;
  margin-left: -9px;
  margin-top: -15px;
  transform: translateY(-520px);
  opacity: 0;
  animation: dropletFall 1.35s cubic-bezier(0.5, 0, 0.55, 1) 0.75s forwards;
  filter: drop-shadow(0 0 14px rgba(139, 63, 38, 0.75));
  z-index: 3;
}
.droplet svg { width: 100%; height: 100%; display: block; }
.droplet svg path { fill: url(#dropletGrad); }

@keyframes dropletFall {
  0%   { transform: translateY(-520px) scaleY(0.7) scaleX(1.0); opacity: 0; }
  12%  { opacity: 1; }
  58%  { transform: translateY(-50px) scaleY(1.8) scaleX(0.55); opacity: 1; }
  85%  { transform: translateY(-4px) scaleY(1.3) scaleX(0.75); opacity: 1; }
  95%  { transform: translateY(0) scaleY(0.28) scaleX(1.9); opacity: 0.7; }
  100% { transform: translateY(2px) scaleY(0.1) scaleX(2.6); opacity: 0; }
}

/* しぶき */
.splash {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 2px;
  height: 16px;
  background: linear-gradient(to top, #a85a3e, transparent);
  border-radius: 40%;
  transform-origin: bottom center;
  opacity: 0;
  z-index: 4;
}
.splash-1 { animation: splashUp1 0.6s ease-out 2.05s forwards; }
.splash-2 { animation: splashUp2 0.65s ease-out 2.10s forwards; }
.splash-3 { animation: splashUp3 0.55s ease-out 2.08s forwards; }

@keyframes splashUp1 {
  0%   { opacity: 0; transform: translate(-50%, -100%) rotate(-24deg) scale(0.1); }
  35%  { opacity: 1; }
  100% { opacity: 0; transform: translate(-50%, -280%) rotate(-24deg) scale(1.3); }
}
@keyframes splashUp2 {
  0%   { opacity: 0; transform: translate(-50%, -100%) rotate(12deg) scale(0.1); }
  35%  { opacity: 1; }
  100% { opacity: 0; transform: translate(-50%, -300%) rotate(12deg) scale(1.4); }
}
@keyframes splashUp3 {
  0%   { opacity: 0; transform: translate(-50%, -100%) rotate(28deg) scale(0.1); }
  35%  { opacity: 1; }
  100% { opacity: 0; transform: translate(-50%, -260%) rotate(28deg) scale(1.2); }
}

/* 着水フラッシュ */
.ripple-flash {
  position: absolute;
  left: 50%; top: 50%;
  width: 80px; height: 80px;
  margin-left: -40px; margin-top: -40px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(223, 183, 154, 0.7), rgba(139, 63, 38, 0.35) 35%, transparent 70%);
  transform: scale(0);
  opacity: 0;
  animation: flashPulse 1.2s ease-out 1.95s forwards;
  z-index: 2;
}
@keyframes flashPulse {
  0%   { transform: scale(0); opacity: 0; }
  20%  { transform: scale(1.5); opacity: 1; }
  100% { transform: scale(9); opacity: 0; }
}

/* 波紋 (4つ、色が段階的に明るくなる) */
.ripple-origin {
  position: absolute;
  left: 50%; top: 50%;
  width: 1px; height: 1px;
  z-index: 2;
}
.ripple {
  position: absolute;
  left: 50%; top: 50%;
  width: 14px; height: 14px;
  border-radius: 50%;
  border: 2px solid rgba(168, 90, 62, 0.8);
  transform: translate(-50%, -50%) scale(0);
  opacity: 0;
  box-shadow: 0 0 18px rgba(139, 63, 38, 0.35);
}
.ripple:nth-child(1) { animation: rippleOut 2.8s cubic-bezier(0.22, 0.9, 0.3, 1) 2.0s forwards; }
.ripple:nth-child(2) { animation: rippleOut 2.8s cubic-bezier(0.22, 0.9, 0.3, 1) 2.3s forwards; }
.ripple:nth-child(3) { animation: rippleOut 3.0s cubic-bezier(0.22, 0.9, 0.3, 1) 2.6s forwards; }
.ripple:nth-child(4) { animation: rippleOut 3.2s cubic-bezier(0.22, 0.9, 0.3, 1) 2.9s forwards; border-width: 1px; }

@keyframes rippleOut {
  0%   { transform: translate(-50%, -50%) scale(0.2); opacity: 0; border-width: 2.4px; }
  8%   { opacity: 1; }
  100% { transform: translate(-50%, -50%) scale(280); opacity: 0; border-width: 0.2px; }
}

/* ブランド文字 */
.pre-brand {
  position: absolute;
  left: 50%; top: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  gap: 32px;
  font-family: var(--font-serif);
  font-weight: 600;
  letter-spacing: 0.25em;
  z-index: 5;
  pointer-events: none;
  font-size: clamp(36px, 6.2vw, 60px);
  color: #fbf6ea;
}
.pre-brand span {
  display: inline-block;
  opacity: 0;
  transform: translateY(18px);
  filter: blur(6px);
  text-shadow: 0 2px 24px rgba(201, 138, 110, 0.5);
}
.pre-brand span:nth-child(1) { animation: charRise 1.2s cubic-bezier(0.2, 0.9, 0.2, 1) 2.8s forwards; }
.pre-brand span:nth-child(2) { animation: charRise 1.2s cubic-bezier(0.2, 0.9, 0.2, 1) 3.05s forwards; }
@keyframes charRise {
  0%   { opacity: 0; transform: translateY(18px); filter: blur(6px); }
  60%  { opacity: 1; }
  100% { opacity: 1; transform: translateY(0); filter: blur(0); }
}

.pre-tagline {
  position: absolute;
  left: 50%;
  top: calc(50% + 68px);
  transform: translateX(-50%);
  font-family: var(--font-latin);
  font-size: 11px;
  letter-spacing: 0.55em;
  color: #fbf6ea;
  opacity: 0;
  animation: tagRise 0.9s ease 3.6s forwards;
  white-space: nowrap;
  z-index: 5;
}
@keyframes tagRise {
  to { opacity: 0.9; }
}

@keyframes preloaderFade {
  to { opacity: 0; visibility: hidden; }
}

/* =========================================================
   SCROLL PROGRESS
   ========================================================= */
.progress-bar {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  width: 0;
  background: linear-gradient(90deg, transparent, var(--toki) 30%, var(--toki-deep) 70%, transparent);
  z-index: 200;
  pointer-events: none;
  transition: width 0.08s linear;
  box-shadow: 0 0 10px rgba(201, 138, 110, 0.7);
}

/* =========================================================
   HEADER
   ========================================================= */
header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 90;
  padding: 20px 0;
  background: rgba(251, 247, 238, 0);
  backdrop-filter: blur(0);
  -webkit-backdrop-filter: blur(0);
  transition: padding 0.35s ease, background 0.35s ease, backdrop-filter 0.35s ease;
  border-bottom: 1px solid transparent;
}
header.scrolled {
  padding: 12px 0;
  background: rgba(251, 247, 238, 0.85);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom-color: var(--hairline);
}

nav {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 600;
  color: var(--sumi);
  letter-spacing: 0.18em;
}
.nav-brand .nav-mark {
  width: 28px;
  height: 28px;
  stroke: var(--toki-deep);
  transform: translateY(1px);
}
.nav-brand .nav-sub {
  font-family: var(--font-latin);
  font-size: 11px;
  font-weight: 400;
  color: var(--sumi-faint);
  letter-spacing: 0.3em;
  margin-left: 2px;
  padding-left: 10px;
  border-left: 1px solid var(--hairline);
}

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
  align-items: center;
}
.nav-links a {
  font-size: 12px;
  color: var(--sumi-soft);
  letter-spacing: 0.14em;
  position: relative;
  padding: 4px 0;
  transition: color 0.3s;
}
.nav-links a::after {
  content: '';
  position: absolute;
  left: 0; right: 100%;
  bottom: -2px;
  height: 1px;
  background: var(--toki-deep);
  transition: right 0.35s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.nav-links a:hover { color: var(--sumi); }
.nav-links a:hover::after { right: 0; }

.nav-cta {
  padding: 10px 22px;
  border: 1px solid var(--toki-deep);
  color: var(--toki-deep) !important;
  border-radius: 0;
  transition: background 0.3s, color 0.3s;
}
.nav-cta:hover {
  background: var(--toki-deep);
  color: var(--ivory) !important;
}
.nav-cta::after { display: none; }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 6px;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 1px;
  background: var(--sumi);
  transition: transform 0.35s, opacity 0.3s;
}
.hamburger.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.mobile-menu {
  position: fixed;
  inset: 0;
  background: var(--paper);
  z-index: 85;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 28px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease;
}
.mobile-menu.open {
  opacity: 1;
  pointer-events: auto;
}
.mobile-menu a {
  font-family: var(--font-serif);
  font-size: 22px;
  color: var(--sumi);
  letter-spacing: 0.1em;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.5s ease, transform 0.5s ease, color 0.3s;
}
.mobile-menu.open a {
  opacity: 1;
  transform: translateY(0);
}
.mobile-menu.open a:nth-child(1) { transition-delay: 0.08s; }
.mobile-menu.open a:nth-child(2) { transition-delay: 0.14s; }
.mobile-menu.open a:nth-child(3) { transition-delay: 0.20s; }
.mobile-menu.open a:nth-child(4) { transition-delay: 0.26s; }
.mobile-menu.open a:nth-child(5) { transition-delay: 0.32s; }
.mobile-menu.open a:nth-child(6) { transition-delay: 0.38s; }
.mobile-menu.open a:nth-child(7) { transition-delay: 0.44s; }
.mobile-menu.open a:nth-child(8) { transition-delay: 0.50s; }
.mobile-menu a:hover { color: var(--toki-deep); }

/* =========================================================
   HERO — 佐渡の夕暮れの海を背景に
   ========================================================= */
.hero {
  position: relative;
  min-height: 100vh;
  padding: 0 var(--gutter);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: #1a0f0a;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image: url('image/kireinaumi.jpg');
  background-size: cover;
  background-position: center 60%;
  background-repeat: no-repeat;
  filter: saturate(0.92) contrast(1.04);
}

.hero-vignette {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background:
    linear-gradient(180deg,
      rgba(10, 6, 4, 0.35) 0%,
      rgba(10, 6, 4, 0.15) 35%,
      rgba(20, 10, 6, 0.45) 70%,
      rgba(30, 16, 10, 0.75) 100%),
    radial-gradient(ellipse at 50% 40%, transparent 45%, rgba(10, 6, 4, 0.35) 100%);
}


.hero-inner {
  position: relative;
  z-index: 4;
  text-align: center;
  max-width: 900px;
  padding: 120px 0 80px;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-latin);
  font-size: 12px;
  color: #f2ddc9;
  letter-spacing: 0.4em;
  margin-bottom: 36px;
  text-transform: uppercase;
  opacity: 0;
  animation: reveal 1s ease 0.4s forwards;
  text-shadow: 0 1px 12px rgba(0, 0, 0, 0.5);
}
.hero-tag::before, .hero-tag::after {
  content: '';
  width: 32px;
  height: 1px;
  background: #f2ddc9;
  opacity: 0.75;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(44px, 7vw, 96px);
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: 0.08em;
  color: #fbf6ea;
  margin-bottom: 28px;
  text-shadow: 0 2px 28px rgba(0, 0, 0, 0.55), 0 0 60px rgba(0, 0, 0, 0.3);
}
.hero-title .line { display: block; overflow: hidden; }
.hero-title .line span {
  display: inline-block;
  transform: translateY(110%);
  animation: lineUp 1.1s cubic-bezier(0.2, 0.9, 0.2, 1) forwards;
}
.hero-title .line:nth-child(1) span { animation-delay: 0.7s; }
.hero-title .line:nth-child(2) span { animation-delay: 0.85s; }
.hero-title .accent {
  color: #e8a885;
  font-style: italic;
}
@keyframes lineUp { to { transform: translateY(0); } }

.hero-sub {
  font-size: 15px;
  line-height: 2.2;
  color: #e8dcc4;
  letter-spacing: 0.08em;
  max-width: 560px;
  margin: 0 auto 48px;
  opacity: 0;
  animation: reveal 1s ease 1.2s forwards;
  text-shadow: 0 1px 14px rgba(0, 0, 0, 0.5);
}

.hero-cta-wrap {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
  opacity: 0;
  animation: reveal 1s ease 1.4s forwards;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 18px 36px;
  font-size: 13px;
  letter-spacing: 0.24em;
  font-weight: 500;
  color: var(--sumi);
  border: 1px solid var(--ghost);
  background: transparent;
  position: relative;
  overflow: hidden;
  transition: color 0.4s, border-color 0.4s;
}
.btn-ghost {
  color: #fbf6ea;
  border-color: rgba(251, 246, 234, 0.55);
  backdrop-filter: blur(4px);
  background: rgba(20, 10, 6, 0.2);
}
.btn-ghost:hover { color: var(--sumi); border-color: #fbf6ea; }
.btn-ghost::before { background: #fbf6ea; }
.btn::before {
  content: '';
  position: absolute;
  top: 0; left: -110%;
  width: 100%; height: 100%;
  background: var(--toki);
  transition: left 0.45s cubic-bezier(0.2, 0.9, 0.2, 1);
  z-index: -1;
}
.btn:hover::before { left: 0; }
.btn:hover { color: var(--sumi); border-color: var(--toki-deep); }
.btn .arrow {
  display: inline-block;
  transition: transform 0.4s;
}
.btn:hover .arrow { transform: translateX(4px); }

.btn-primary {
  background: var(--toki-deep);
  color: var(--ivory);
  border-color: var(--toki-deep);
  box-shadow: 0 10px 30px rgba(168, 90, 62, 0.35);
}
.btn-primary::before { background: var(--toki-blood); }
.btn-primary:hover { color: var(--ivory); border-color: var(--toki-blood); }

.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 5;
  font-family: var(--font-latin);
  font-size: 10px;
  letter-spacing: 0.4em;
  color: rgba(251, 246, 234, 0.7);
  writing-mode: vertical-rl;
  opacity: 0;
  animation: reveal 1s ease 1.8s forwards;
}
.hero-scroll::after {
  content: '';
  display: block;
  width: 1px;
  height: 60px;
  background: linear-gradient(to bottom, rgba(251, 246, 234, 0.8), transparent);
  margin: 12px auto 0;
  animation: scrollLine 2.4s ease-in-out infinite;
}
@keyframes scrollLine {
  0%   { transform: scaleY(0); transform-origin: top; }
  45%  { transform: scaleY(1); transform-origin: top; }
  55%  { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

@keyframes reveal {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* =========================================================
   SECTION SCAFFOLD
   ========================================================= */
section {
  position: relative;
  padding: 140px var(--gutter);
}
.section-inner {
  max-width: var(--max);
  margin: 0 auto;
  position: relative;
}

.section-header {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 64px;
  position: relative;
}
.section-header.centered { align-items: center; text-align: center; }

.section-num {
  font-family: var(--font-latin);
  font-size: 12px;
  color: var(--toki-deep);
  letter-spacing: 0.45em;
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 400;
}
.section-num::before {
  content: '';
  width: 48px;
  height: 1px;
  background: var(--toki-deep);
  opacity: 0.8;
}
.section-header.centered .section-num::after {
  content: '';
  width: 48px;
  height: 1px;
  background: var(--toki-deep);
  opacity: 0.8;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(32px, 4.2vw, 52px);
  font-weight: 500;
  line-height: 1.45;
  letter-spacing: 0.05em;
  color: var(--sumi);
}
.section-title .accent { color: var(--toki-deep); }

.section-lead {
  font-size: 14px;
  color: var(--sumi-soft);
  line-height: 2.1;
  letter-spacing: 0.08em;
  max-width: 600px;
  margin-top: 8px;
}
.section-header.centered .section-lead { margin-left: auto; margin-right: auto; }

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 1s cubic-bezier(0.2, 0.8, 0.2, 1), transform 1s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.reveal.in { opacity: 1; transform: translateY(0); }
.reveal-stagger.in > * {
  opacity: 0;
  animation: staggerUp 0.9s ease forwards;
}
.reveal-stagger.in > *:nth-child(1) { animation-delay: 0.0s; }
.reveal-stagger.in > *:nth-child(2) { animation-delay: 0.08s; }
.reveal-stagger.in > *:nth-child(3) { animation-delay: 0.16s; }
.reveal-stagger.in > *:nth-child(4) { animation-delay: 0.24s; }
.reveal-stagger.in > *:nth-child(5) { animation-delay: 0.32s; }
.reveal-stagger.in > *:nth-child(6) { animation-delay: 0.40s; }
@keyframes staggerUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* =========================================================
   ABOUT ME
   ========================================================= */
.about {
  background: linear-gradient(180deg, var(--paper) 0%, var(--ivory) 100%);
}

.about-grid {
  display: grid;
  grid-template-columns: 400px 1fr;
  gap: 80px;
  align-items: start;
}
.about-portrait {
  position: sticky;
  top: 120px;
}

.about-portrait {
  position: relative;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  border-radius: 2px;
  background: var(--cream);
}
.about-portrait::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(42, 26, 32, 0.35) 100%);
  z-index: 2;
  pointer-events: none;
}
.about-portrait::after {
  content: '';
  position: absolute;
  inset: 0;
  border: 1px solid var(--toki-deep);
  transform: translate(16px, 16px);
  z-index: -1;
}
.about-portrait img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: filter 0.6s, transform 6s;
}
.about-portrait:hover img { transform: scale(1.04); }
.about-portrait-caption {
  position: absolute;
  bottom: 20px; left: 20px;
  z-index: 3;
  font-family: var(--font-latin);
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--ivory);
}

.about-body .about-hello {
  font-family: var(--font-latin);
  font-size: 14px;
  letter-spacing: 0.3em;
  color: var(--toki-deep);
  margin-bottom: 14px;
}
.about-body .about-name {
  font-family: var(--font-serif);
  font-size: 40px;
  font-weight: 500;
  letter-spacing: 0.08em;
  margin-bottom: 4px;
  color: var(--sumi);
}
.about-body .about-name-en {
  font-family: var(--font-latin);
  font-size: 13px;
  color: var(--sumi-faint);
  letter-spacing: 0.3em;
  margin-bottom: 32px;
}

.about-body p {
  font-size: 14px;
  color: var(--sumi-soft);
  line-height: 2.2;
  letter-spacing: 0.06em;
  margin-bottom: 20px;
}

.about-intro {
  font-size: 14.5px !important;
  color: var(--sumi) !important;
  line-height: 2.1 !important;
  margin-bottom: 24px !important;
}

.about-more-btn {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 13px 26px;
  font-family: var(--font-latin);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.3em;
  color: var(--toki-deep);
  border: 1px solid var(--toki-deep);
  background: transparent;
  cursor: pointer;
  transition: background 0.3s ease, color 0.3s ease;
  margin-top: 4px;
}
.about-more-btn:hover {
  background: var(--toki-deep);
  color: var(--ivory);
}
.about-more-label { position: relative; }
.about-more-label .about-more-close { display: none; }
.about-more-btn[aria-expanded="true"] .about-more-open { display: none; }
.about-more-btn[aria-expanded="true"] .about-more-close { display: inline; }

.about-more-icon {
  position: relative;
  width: 12px;
  height: 12px;
  flex-shrink: 0;
}
.about-more-icon::before,
.about-more-icon::after {
  content: '';
  position: absolute;
  left: 50%; top: 50%;
  background: currentColor;
  transition: transform 0.35s ease, opacity 0.3s ease;
}
.about-more-icon::before { width: 12px; height: 1px; transform: translate(-50%, -50%); }
.about-more-icon::after  { width: 1px; height: 12px; transform: translate(-50%, -50%); }
.about-more-btn[aria-expanded="true"] .about-more-icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
  opacity: 0;
}

.about-more {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.6s ease, opacity 0.5s ease, margin-top 0.5s ease;
  margin-top: 0;
}
.about-more[data-open="true"] {
  max-height: 3000px;
  opacity: 1;
  margin-top: 32px;
}
.about-more-inner {
  padding-top: 4px;
  border-top: 1px solid var(--hairline);
  padding: 24px 0 4px;
}
.about-body p strong {
  color: var(--sumi);
  font-weight: 500;
  border-bottom: 1px solid var(--toki-deep);
  padding-bottom: 2px;
}

.about-fields {
  margin-top: 28px;
  padding: 18px 0 4px;
  display: flex;
  align-items: baseline;
  gap: 20px;
  flex-wrap: wrap;
}
.about-fields-label {
  font-family: var(--font-latin);
  font-size: 11px;
  letter-spacing: 0.4em;
  color: var(--toki-deep);
  text-transform: uppercase;
  padding-right: 18px;
  border-right: 1px solid var(--hairline);
  flex-shrink: 0;
}
.about-fields-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  font-size: 13px;
  color: var(--sumi);
  letter-spacing: 0.05em;
}
.about-fields-list li {
  position: relative;
  padding-right: 18px;
}
.about-fields-list li:not(:last-child)::after {
  content: '・';
  position: absolute;
  right: 2px;
  color: var(--sumi-faint);
}

.about-tagline {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--hairline);
  font-family: var(--font-serif);
  font-size: 14px;
  color: var(--toki-deep);
  letter-spacing: 0.12em;
  line-height: 1.8;
  text-align: right;
}

/* =========================================================
   ALL IN ONE
   ========================================================= */
.allinone {
  background: linear-gradient(180deg, var(--ivory) 0%, var(--toki-pale) 100%);
  position: relative;
}

.allinone-lead {
  max-width: 680px;
  margin: 0 auto 64px;
  text-align: center;
  font-family: var(--font-serif);
  font-size: 19px;
  line-height: 2.1;
  color: var(--sumi);
  letter-spacing: 0.05em;
}
.allinone-lead strong {
  color: var(--toki-deep);
  font-weight: 500;
}

.allinone-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--hairline);
  border: 1px solid var(--hairline);
}

.allinone-item {
  background: var(--ivory);
  padding: 44px 32px;
  position: relative;
  transition: background 0.5s, box-shadow 0.5s;
  overflow: hidden;
}
.allinone-item::before {
  content: '';
  position: absolute;
  left: 0; top: 0;
  width: 2px; height: 0;
  background: var(--toki-deep);
  transition: height 0.5s cubic-bezier(0.2, 0.9, 0.2, 1);
}
.allinone-item:hover {
  background: var(--paper);
  box-shadow: 0 10px 30px rgba(168, 90, 62, 0.12);
}
.allinone-item:hover::before { height: 100%; }

.allinone-num {
  font-family: var(--font-latin);
  font-size: 36px;
  font-weight: 300;
  color: var(--toki-deep);
  letter-spacing: 0.05em;
  line-height: 1;
  margin-bottom: 18px;
  opacity: 0.9;
}

.allinone-name {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 500;
  color: var(--sumi);
  margin-bottom: 12px;
  letter-spacing: 0.06em;
}

.allinone-desc {
  font-size: 13px;
  color: var(--sumi-soft);
  line-height: 2;
  letter-spacing: 0.04em;
}

/* =========================================================
   WORKS
   ========================================================= */
.works {
  background: linear-gradient(180deg, var(--toki-pale) 0%, var(--paper) 100%);
}

.work-card {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 56px;
  align-items: center;
  padding: 64px 0;
  border-bottom: 1px solid var(--hairline);
}
.work-card:first-of-type { padding-top: 0; }
.work-card:last-of-type { border-bottom: none; padding-bottom: 0; }
.work-card.reverse { grid-template-columns: 1fr 1.2fr; }
.work-card.reverse .work-visual { order: 2; }

.work-visual {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: linear-gradient(135deg, var(--toki-pale), var(--cream));
  border: 1px solid var(--hairline);
  box-shadow: 0 14px 34px rgba(168, 90, 62, 0.12);
  display: block;
  text-decoration: none;
}
.work-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(201, 138, 110, 0.25), transparent 60%);
  z-index: 1;
  pointer-events: none;
}

.work-visual-image { background: var(--ink-deep, #0b0408); }
.work-visual-image::before { display: none; }
.work-screen {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
  transition: transform 1.2s ease;
}
.work-visual-image:hover .work-screen { transform: scale(1.03); }
.work-visual-chip {
  position: absolute;
  left: 14px; bottom: 14px;
  z-index: 2;
  font-family: var(--font-latin);
  font-size: 10.5px;
  letter-spacing: 0.3em;
  color: #fbf6ea;
  background: rgba(20, 10, 6, 0.55);
  backdrop-filter: blur(6px);
  padding: 5px 12px;
  border: 1px solid rgba(251, 246, 234, 0.25);
}
.work-mock {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 32px;
}
.work-mock-bar {
  width: 100%;
  max-width: 320px;
  height: 8px;
  background: var(--hairline);
  margin-bottom: 18px;
  position: relative;
  border-radius: 1px;
}
.work-mock-bar::before {
  content: '';
  position: absolute;
  left: 2px; top: 50%;
  transform: translateY(-50%);
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--toki-blood);
  box-shadow: 8px 0 0 var(--toki-deep), 16px 0 0 var(--gold);
}
.work-mock-title {
  font-family: var(--font-serif);
  font-size: 32px;
  color: var(--sumi);
  letter-spacing: 0.1em;
  margin-bottom: 6px;
}
.work-mock-sub {
  font-size: 11px;
  color: var(--toki-blood);
  letter-spacing: 0.25em;
}

.work-cat {
  font-family: var(--font-latin);
  font-size: 11px;
  color: var(--toki-deep);
  letter-spacing: 0.32em;
  margin-bottom: 12px;
  text-transform: uppercase;
}
.work-name {
  font-family: var(--font-serif);
  font-size: 26px;
  color: var(--sumi);
  letter-spacing: 0.06em;
  margin-bottom: 14px;
}
.work-note {
  font-size: 13px;
  color: var(--sumi-soft);
  line-height: 2.1;
  letter-spacing: 0.04em;
  margin-bottom: 20px;
}
.work-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}
.work-tag {
  font-size: 10px;
  color: var(--sumi-faint);
  border: 1px solid var(--hairline);
  padding: 4px 12px;
  letter-spacing: 0.12em;
  background: var(--ivory);
}
.work-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-latin);
  font-size: 12px;
  color: var(--toki-deep);
  letter-spacing: 0.24em;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--toki-deep);
  transition: letter-spacing 0.4s, color 0.3s;
}
.work-link:hover { letter-spacing: 0.32em; color: var(--toki-blood); }

/* =========================================================
   CREDO — 3つの信条を大判タイポで
   ========================================================= */
.credo {
  background: linear-gradient(180deg, var(--paper) 0%, var(--cream) 100%);
}

.credo-list {
  display: flex;
  flex-direction: column;
}

.credo-item {
  display: grid;
  grid-template-columns: minmax(180px, 260px) 1fr;
  gap: 72px;
  align-items: start;
  padding: 88px 0;
  border-top: 1px solid var(--hairline);
}
.credo-item:last-child { border-bottom: 1px solid var(--hairline); }

.credo-no {
  font-family: var(--font-latin);
  font-size: clamp(88px, 12vw, 160px);
  font-weight: 300;
  color: var(--toki-deep);
  line-height: 0.85;
  letter-spacing: -0.03em;
  position: sticky;
  top: 120px;
}

.credo-text {
  max-width: 620px;
}

.credo-en {
  font-family: var(--font-latin);
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.38em;
  color: var(--toki-deep);
  text-transform: uppercase;
  margin-bottom: 22px;
  display: inline-block;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--toki-deep);
}

.credo-jp {
  font-family: var(--font-serif);
  font-size: clamp(30px, 4.6vw, 52px);
  font-weight: 500;
  color: var(--sumi);
  letter-spacing: 0.08em;
  line-height: 1.45;
  margin-bottom: 28px;
}

.credo-desc {
  font-size: 15px;
  color: var(--sumi-soft);
  line-height: 2.15;
  letter-spacing: 0.05em;
}

@media (max-width: 768px) {
  .credo-item {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 60px 0;
  }
  .credo-no {
    position: static;
    font-size: 80px;
  }
  .credo-desc { font-size: 14px; }
}

/* =========================================================
   SERVICE
   ========================================================= */
.service {
  background: linear-gradient(180deg, var(--paper) 0%, var(--cream) 100%);
}

.service-hero-msg {
  text-align: center;
  margin-bottom: 56px;
  padding: 40px 32px;
  border: 1px solid var(--toki-deep);
  position: relative;
  background: linear-gradient(135deg, rgba(201, 138, 110, 0.2), rgba(251, 247, 238, 0.6) 60%);
}
.service-hero-msg::before,
.service-hero-msg::after {
  content: '';
  position: absolute;
  width: 10px; height: 10px;
  background: var(--toki-deep);
}
.service-hero-msg::before { top: -5px; left: -5px; }
.service-hero-msg::after { bottom: -5px; right: -5px; }

.service-hero-label {
  font-family: var(--font-latin);
  font-size: 11px;
  letter-spacing: 0.4em;
  color: var(--toki-deep);
  margin-bottom: 12px;
}
.service-hero-main {
  font-family: var(--font-serif);
  font-size: 26px;
  color: var(--sumi);
  letter-spacing: 0.06em;
  margin-bottom: 10px;
}
.service-hero-main strong {
  font-size: 42px;
  color: var(--toki-deep);
  font-weight: 700;
  margin: 0 4px;
}
.service-hero-sub {
  font-size: 13px;
  color: var(--sumi-soft);
  line-height: 1.9;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 36px;
}

.service-card {
  background: var(--ivory);
  border: 1px solid var(--hairline);
  padding: 44px 36px;
  position: relative;
  transition: transform 0.5s, border-color 0.5s, box-shadow 0.5s;
}
.service-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 14px 38px rgba(168, 90, 62, 0.12);
}
.service-card.featured {
  border-color: var(--toki-deep);
  background: linear-gradient(180deg, rgba(201, 138, 110, 0.18) 0%, var(--ivory) 60%);
  box-shadow: 0 14px 40px rgba(168, 90, 62, 0.2);
}

.service-badge {
  position: absolute;
  top: -1px; right: 24px;
  padding: 6px 16px;
  background: var(--toki-deep);
  color: var(--ivory);
  font-family: var(--font-latin);
  font-size: 11px;
  letter-spacing: 0.3em;
  font-weight: 500;
}

.service-name {
  font-family: var(--font-serif);
  font-size: 20px;
  color: var(--sumi);
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}
.service-name-en {
  font-family: var(--font-latin);
  font-size: 11px;
  color: var(--sumi-faint);
  letter-spacing: 0.3em;
  margin-bottom: 28px;
}

.service-price {
  font-family: var(--font-serif);
  font-size: 52px;
  font-weight: 500;
  color: var(--toki-deep);
  line-height: 1;
  margin-bottom: 6px;
}
.service-price-unit {
  font-size: 15px;
  font-family: var(--font-sans);
  color: var(--sumi-soft);
  margin-left: 4px;
}
.service-market {
  display: inline-block;
  font-size: 11px;
  color: var(--sumi-faint);
  padding: 3px 10px;
  border: 1px solid var(--hairline);
  margin-bottom: 24px;
  letter-spacing: 0.08em;
  background: var(--cream);
}
.service-desc {
  font-size: 13px;
  color: var(--sumi-soft);
  line-height: 2;
  margin-bottom: 22px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--hairline);
  letter-spacing: 0.04em;
}
.service-includes {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.service-includes li {
  font-size: 12px;
  color: var(--sumi);
  line-height: 1.7;
  padding-left: 22px;
  position: relative;
  letter-spacing: 0.04em;
}
.service-includes li::before {
  content: '';
  position: absolute;
  left: 0; top: 8px;
  width: 14px; height: 1px;
  background: var(--toki-deep);
}

.service-maint {
  background: var(--ivory);
  border: 1px solid var(--hairline);
  padding: 36px 40px;
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 48px;
  align-items: center;
}
.service-maint .service-price { font-size: 40px; }
.service-note {
  font-size: 11px;
  color: var(--sumi-faint);
  margin-top: 4px;
  letter-spacing: 0.08em;
}

/* =========================================================
   TRUST
   ========================================================= */
.trust {
  background: linear-gradient(180deg, var(--cream) 0%, var(--toki-pale) 100%);
  position: relative;
  overflow: hidden;
}
.trust::before {
  content: '安';
  position: absolute;
  right: -60px; top: 60px;
  font-family: var(--font-serif);
  font-size: 480px;
  font-weight: 700;
  color: rgba(168, 90, 62, 0.1);
  line-height: 0.8;
  pointer-events: none;
}

.trust-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--hairline);
  border: 1px solid var(--hairline);
  position: relative;
  z-index: 2;
}

.trust-item {
  background: var(--ivory);
  padding: 36px 32px;
  display: flex;
  gap: 20px;
  align-items: flex-start;
  transition: background 0.4s;
}
.trust-item:hover { background: var(--paper); }

.trust-icon {
  flex-shrink: 0;
  width: 44px; height: 44px;
  border: 1px solid var(--toki-deep);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 18px;
  color: var(--toki-deep);
  background: rgba(201, 138, 110, 0.2);
}
.trust-body h4 {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 500;
  color: var(--sumi);
  margin-bottom: 8px;
  letter-spacing: 0.04em;
}
.trust-body p {
  font-size: 13px;
  color: var(--sumi-soft);
  line-height: 1.9;
  letter-spacing: 0.04em;
}

/* =========================================================
   AFTER
   ========================================================= */
.after {
  background: linear-gradient(180deg, var(--toki-pale) 0%, var(--paper) 100%);
}

.after-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.after-card {
  background: var(--ivory);
  border: 1px solid var(--hairline);
  padding: 40px 32px;
  position: relative;
  overflow: hidden;
}
.after-card::after {
  content: '';
  position: absolute;
  right: -20px; bottom: -20px;
  width: 140px; height: 140px;
  background: radial-gradient(circle, var(--glow), transparent 70%);
  pointer-events: none;
}

.after-kicker {
  font-family: var(--font-latin);
  font-size: 11px;
  color: var(--toki-deep);
  letter-spacing: 0.3em;
  margin-bottom: 14px;
}
.after-title {
  font-family: var(--font-serif);
  font-size: 18px;
  color: var(--sumi);
  line-height: 1.7;
  letter-spacing: 0.04em;
  margin-bottom: 14px;
}
.after-desc {
  font-size: 13px;
  color: var(--sumi-soft);
  line-height: 1.95;
  letter-spacing: 0.04em;
}

/* =========================================================
   FLOW
   ========================================================= */
.flow {
  background: var(--paper);
}

.flow-list {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0;
  position: relative;
}
.flow-list::before {
  content: '';
  position: absolute;
  left: 0; right: 0; top: 28px;
  height: 1px;
  background: var(--hairline);
}

.flow-step {
  position: relative;
  padding: 0 14px;
  text-align: center;
}
.flow-num {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--ivory);
  border: 1px solid var(--toki-deep);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 18px;
  color: var(--toki-deep);
  margin: 0 auto 24px;
  position: relative;
  z-index: 2;
  transition: background 0.3s, color 0.3s, box-shadow 0.3s;
}
.flow-step:hover .flow-num {
  background: var(--toki-deep);
  color: var(--ivory);
  box-shadow: 0 0 24px rgba(168, 90, 62, 0.45);
}
.flow-title {
  font-family: var(--font-serif);
  font-size: 14px;
  color: var(--sumi);
  letter-spacing: 0.04em;
  margin-bottom: 10px;
  line-height: 1.6;
}
.flow-note {
  font-size: 11px;
  color: var(--sumi-faint);
  line-height: 1.8;
  letter-spacing: 0.04em;
}

/* =========================================================
   FAQ
   ========================================================= */
.faq-section {
  background: linear-gradient(180deg, var(--paper) 0%, var(--cream) 100%);
}

.faq-list {
  border-top: 1px solid var(--hairline);
}

.faq-item {
  border-bottom: 1px solid var(--hairline);
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  text-align: left;
  padding: 28px 0;
  font-family: var(--font-serif);
  font-size: 16px;
  color: var(--sumi);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  letter-spacing: 0.04em;
  transition: color 0.3s;
}
.faq-question:hover { color: var(--toki-deep); }

.faq-q-num {
  font-family: var(--font-latin);
  color: var(--toki-deep);
  font-size: 13px;
  letter-spacing: 0.3em;
  margin-right: 14px;
}

.faq-q-text { flex: 1; }

.faq-icon {
  flex-shrink: 0;
  width: 36px; height: 36px;
  border: 1px solid var(--hairline);
  border-radius: 50%;
  position: relative;
  transition: border-color 0.3s, background 0.3s;
  background: var(--ivory);
}
.faq-icon::before,
.faq-icon::after {
  content: '';
  position: absolute;
  left: 50%; top: 50%;
  background: var(--toki-deep);
  transition: transform 0.35s ease;
}
.faq-icon::before { width: 12px; height: 1px; transform: translate(-50%, -50%); }
.faq-icon::after  { width: 1px; height: 12px; transform: translate(-50%, -50%); }
.faq-item.open .faq-icon { border-color: var(--toki-deep); }
.faq-item.open .faq-icon::after { transform: translate(-50%, -50%) rotate(90deg); opacity: 0; }

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.45s ease;
}
.faq-answer-inner {
  padding: 0 0 28px 58px;
  font-size: 13px;
  color: var(--sumi-soft);
  line-height: 2.1;
  letter-spacing: 0.04em;
}

/* =========================================================
   OPEN — 二組目のお客さまを
   ========================================================= */
.open-section {
  background: linear-gradient(180deg, var(--cream) 0%, var(--toki-pale) 100%);
}

.open-card {
  background: var(--ivory);
  border: 1px solid var(--toki-deep);
  padding: 56px 64px;
  position: relative;
  box-shadow: 0 20px 60px rgba(139, 63, 38, 0.12);
}
.open-card::before,
.open-card::after {
  content: '';
  position: absolute;
  width: 12px; height: 12px;
  background: var(--toki-deep);
}
.open-card::before { top: -6px; left: -6px; }
.open-card::after { bottom: -6px; right: -6px; }

.open-lead {
  font-family: var(--font-serif);
  font-size: 17px;
  line-height: 2.1;
  color: var(--sumi);
  text-align: center;
  letter-spacing: 0.05em;
  margin-bottom: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--hairline);
}
.open-lead strong {
  color: var(--toki-deep);
  font-weight: 600;
  border-bottom: 1px solid var(--toki-deep);
  padding-bottom: 2px;
}

.open-list {
  display: flex;
  flex-direction: column;
  gap: 28px;
  margin-bottom: 48px;
}

.open-item {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 24px;
  align-items: flex-start;
}

.open-item-num {
  font-family: var(--font-latin);
  font-size: 28px;
  font-weight: 400;
  color: var(--toki-deep);
  line-height: 1;
  letter-spacing: 0.05em;
  padding-top: 4px;
  border-right: 1px solid var(--hairline);
  padding-right: 16px;
}

.open-item-title {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 500;
  color: var(--sumi);
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.open-item-body {
  font-size: 13px;
  color: var(--sumi-soft);
  line-height: 2;
  letter-spacing: 0.04em;
}

.open-cta {
  text-align: center;
  padding-top: 40px;
  border-top: 1px solid var(--hairline);
}
.open-cta-note {
  margin-top: 18px;
  font-size: 12px;
  color: var(--sumi-faint);
  letter-spacing: 0.08em;
}

@media (max-width: 768px) {
  .open-card { padding: 36px 24px; }
  .open-lead { font-size: 14px; line-height: 2; }
  .open-item { grid-template-columns: 1fr; gap: 10px; }
  .open-item-num {
    border-right: none;
    border-bottom: 1px solid var(--hairline);
    padding: 0 0 10px;
    font-size: 22px;
  }
}

/* =========================================================
   ISLAND BANNER
   ========================================================= */
.island-banner {
  position: relative;
  padding: 0;
  min-height: 68vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: #1a0f0a;
}
.island-banner-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  filter: saturate(0.9) contrast(1.05);
  z-index: 0;
}
.island-banner-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(180deg, rgba(10, 6, 4, 0.3) 0%, rgba(10, 6, 4, 0.15) 40%, rgba(10, 6, 4, 0.55) 100%),
    radial-gradient(ellipse at 50% 50%, transparent 40%, rgba(10, 6, 4, 0.4) 100%);
}
.island-banner-inner {
  position: relative;
  z-index: 2;
  text-align: center;
  color: #fbf6ea;
  padding: 40px var(--gutter);
}
.island-banner-kicker {
  font-family: var(--font-latin);
  font-size: 12px;
  letter-spacing: 0.5em;
  color: #e8a885;
  margin-bottom: 28px;
  text-shadow: 0 1px 16px rgba(0, 0, 0, 0.5);
}
.island-banner-line {
  font-family: var(--font-serif);
  font-size: clamp(28px, 4.5vw, 48px);
  font-weight: 500;
  letter-spacing: 0.08em;
  line-height: 1.6;
  text-shadow: 0 2px 26px rgba(0, 0, 0, 0.6);
}
.island-banner-place {
  margin-top: 28px;
  font-family: var(--font-latin);
  font-size: 11px;
  letter-spacing: 0.3em;
  color: rgba(251, 246, 234, 0.6);
}

/* =========================================================
   CONTACT
   ========================================================= */
.contact {
  background: linear-gradient(180deg, var(--cream) 0%, var(--toki-pale) 60%, var(--toki-soft) 100%);
  padding: 160px var(--gutter) 140px;
  position: relative;
  overflow: hidden;
}
.contact::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 50%, rgba(201, 138, 110, 0.3), transparent 65%);
  pointer-events: none;
}

.contact-inner {
  max-width: 860px;
  margin: 0 auto;
  text-align: center;
  position: relative;
  z-index: 2;
}

.contact-kicker {
  font-family: var(--font-latin);
  font-size: 12px;
  letter-spacing: 0.4em;
  color: var(--toki-blood);
  margin-bottom: 28px;
}
.contact-title {
  font-family: var(--font-serif);
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 500;
  color: var(--sumi);
  letter-spacing: 0.05em;
  line-height: 1.4;
  margin-bottom: 28px;
}
.contact-lead {
  font-size: 14px;
  color: var(--sumi-soft);
  line-height: 2.1;
  letter-spacing: 0.06em;
  max-width: 540px;
  margin: 0 auto 56px;
}

.contact-tel {
  display: inline-block;
  font-family: var(--font-serif);
  font-size: clamp(40px, 6vw, 64px);
  color: var(--toki-blood);
  letter-spacing: 0.06em;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--toki-blood);
  transition: color 0.3s, letter-spacing 0.4s, text-shadow 0.4s;
  text-shadow: 0 0 30px rgba(201, 138, 110, 0.5);
}
.contact-tel:hover {
  color: var(--sumi);
  letter-spacing: 0.08em;
}

.contact-tel-note {
  font-size: 11px;
  color: var(--sumi-soft);
  letter-spacing: 0.3em;
  margin-top: 16px;
  margin-bottom: 48px;
}

.contact-alt {
  display: flex;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
  padding-top: 40px;
  border-top: 1px solid var(--hairline);
}
.contact-alt-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}
.contact-alt-label {
  font-family: var(--font-latin);
  font-size: 10px;
  letter-spacing: 0.4em;
  color: var(--sumi-faint);
}
.contact-alt-value {
  font-size: 14px;
  color: var(--sumi);
  letter-spacing: 0.04em;
  transition: color 0.3s;
}
.contact-alt-value:hover { color: var(--toki-blood); }

.contact-hours {
  margin-top: 40px;
  font-size: 12px;
  color: var(--sumi-soft);
  letter-spacing: 0.12em;
  line-height: 1.9;
}

/* =========================================================
   FOOTER
   ========================================================= */
footer {
  background: var(--sumi);
  padding: 60px var(--gutter) 36px;
  color: var(--cream);
}
.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 40px;
  flex-wrap: wrap;
  padding-bottom: 36px;
  border-bottom: 1px solid rgba(251, 247, 238, 0.1);
  margin-bottom: 24px;
}
.footer-brand {
  font-family: var(--font-serif);
  font-size: 24px;
  letter-spacing: 0.18em;
  color: var(--cream);
  margin-bottom: 10px;
}
.footer-tag {
  font-family: var(--font-latin);
  font-size: 11px;
  color: rgba(251, 247, 238, 0.4);
  letter-spacing: 0.3em;
}
.footer-nav {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
}
.footer-nav a {
  font-size: 12px;
  color: rgba(251, 247, 238, 0.55);
  letter-spacing: 0.12em;
  transition: color 0.3s;
}
.footer-nav a:hover { color: var(--toki); }

.footer-bottom {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 10px;
  color: rgba(251, 247, 238, 0.35);
  letter-spacing: 0.12em;
}

/* =========================================================
   SIDE RAIL
   ========================================================= */
.side-rail {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  z-index: 40;
  font-family: var(--font-latin);
  font-size: 10px;
  letter-spacing: 0.4em;
  color: var(--whisper);
  writing-mode: vertical-rl;
  pointer-events: none;
}
.side-rail.left { left: 20px; }
.side-rail.right { right: 20px; }

/* =========================================================
   SCROLL TOP
   ========================================================= */
.scroll-top {
  position: fixed;
  bottom: 28px; right: 24px;
  width: 44px; height: 44px;
  border: 1px solid var(--toki-deep);
  background: rgba(251, 247, 238, 0.8);
  backdrop-filter: blur(10px);
  color: var(--toki-deep);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s, background 0.3s, color 0.3s;
  z-index: 50;
  font-size: 16px;
}
.scroll-top.visible { opacity: 1; pointer-events: auto; }
.scroll-top:hover { background: var(--toki-deep); color: var(--ivory); }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 1024px) {
  .about-grid { grid-template-columns: 1fr; gap: 48px; max-width: 540px; margin: 0 auto; }
  .about-portrait { max-width: 400px; margin: 0 auto; position: static; top: auto; }
  .trust-list { grid-template-columns: 1fr; }
  .flow-list { grid-template-columns: repeat(2, 1fr); gap: 32px 20px; }
  .flow-list::before { display: none; }
  .side-rail { display: none; }
}

@media (max-width: 768px) {
  :root { --gutter: 18px; }

  body { line-height: 1.9; }

  section { padding: 76px var(--gutter); }
  .section-header { margin-bottom: 36px; gap: 10px; }
  .section-num { font-size: 11px; letter-spacing: 0.32em; gap: 10px; }
  .section-num::before { width: 32px; }
  .section-header.centered .section-num::after { width: 32px; }
  .section-title { font-size: 26px; line-height: 1.5; letter-spacing: 0.04em; }
  .section-lead { font-size: 13px; line-height: 2; letter-spacing: 0.04em; }

  .nav-links { display: none; }
  .hamburger { display: flex; }
  header { padding: 14px 0; }
  header.scrolled { padding: 10px 0; }
  .nav-brand { font-size: 18px; }
  .nav-brand .nav-mark { width: 22px; height: 22px; }
  .nav-brand .nav-sub { font-size: 10px; letter-spacing: 0.22em; padding-left: 8px; }

  /* ---- HERO ---- */
  .hero-inner { padding: 110px 0 100px; }
  .hero-tag { font-size: 10px; letter-spacing: 0.32em; margin-bottom: 22px; }
  .hero-tag::before, .hero-tag::after { width: 20px; }
  .hero-title { font-size: 34px; line-height: 1.45; letter-spacing: 0.04em; margin-bottom: 22px; }
  .hero-sub { font-size: 13.5px; line-height: 2; letter-spacing: 0.04em; margin-bottom: 32px; }
  .hero-sub br { display: none; }
  .hero-cta-wrap { flex-direction: column; gap: 12px; width: 100%; max-width: 320px; margin: 0 auto; }
  .hero-cta-wrap .btn { width: 100%; justify-content: center; padding: 16px 20px; font-size: 13px; }
  .hero-scroll { display: none; }
  .hero-bg { background-position: 60% center; }

  /* ---- ABOUT ---- */
  .about-grid { grid-template-columns: 1fr; gap: 36px; max-width: 100%; }
  .about-portrait { max-width: 320px; margin: 0 auto; }
  .about-portrait::after { transform: translate(10px, 10px); }
  .about-body .about-hello { font-size: 12px; letter-spacing: 0.24em; margin-bottom: 10px; }
  .about-body .about-name { font-size: 30px; margin-bottom: 2px; }
  .about-body .about-name-en { font-size: 11px; letter-spacing: 0.24em; margin-bottom: 22px; }
  .about-body p { font-size: 13.5px; line-height: 2.05; margin-bottom: 16px; }
  .about-fields {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    padding: 16px 0 4px;
  }
  .about-fields-label { border-right: none; padding-right: 0; }
  .about-fields-list { font-size: 12px; gap: 4px 14px; }
  .about-fields-list li { padding-right: 14px; }
  .about-tagline { font-size: 13px; margin-top: 24px; padding-top: 20px; text-align: left; }

  /* ---- ALL IN ONE ---- */
  .allinone-lead {
    font-size: 14.5px;
    line-height: 2;
    padding: 0 4px;
    margin-bottom: 40px;
  }
  .allinone-grid { grid-template-columns: 1fr; }
  .allinone-item { padding: 32px 24px; }
  .allinone-num { font-size: 28px; margin-bottom: 12px; }
  .allinone-name { font-size: 17px; margin-bottom: 10px; }
  .allinone-desc { font-size: 12.5px; line-height: 1.9; }

  /* ---- WORKS ---- */
  .work-card,
  .work-card.reverse { grid-template-columns: 1fr; gap: 22px; padding: 32px 0; }
  .work-card.reverse .work-visual { order: unset; }
  .work-mock-title { font-size: 26px; letter-spacing: 0.08em; }
  .work-mock-sub { font-size: 10px; letter-spacing: 0.18em; }
  .work-name { font-size: 20px; }
  .work-note { font-size: 12.5px; line-height: 1.95; }
  .work-tag { font-size: 9.5px; padding: 3px 10px; }

  /* ---- CREDO ---- */
  .credo-item {
    grid-template-columns: 1fr;
    gap: 14px;
    padding: 48px 0;
  }
  .credo-no {
    position: static;
    font-size: 68px;
    line-height: 0.9;
  }
  .credo-en { font-size: 11px; letter-spacing: 0.3em; margin-bottom: 14px; }
  .credo-jp { font-size: 28px; line-height: 1.45; margin-bottom: 18px; }
  .credo-desc { font-size: 13.5px; line-height: 2.05; }

  /* ---- SERVICE ---- */
  .service-hero-msg { padding: 28px 20px; margin-bottom: 36px; }
  .service-hero-label { font-size: 10px; letter-spacing: 0.3em; }
  .service-hero-main { font-size: 18px; line-height: 1.6; }
  .service-hero-main strong { font-size: 30px; }
  .service-hero-sub { font-size: 12px; }
  .service-grid { grid-template-columns: 1fr; gap: 20px; }
  .service-card { padding: 32px 24px; }
  .service-name { font-size: 18px; }
  .service-name-en { font-size: 10px; letter-spacing: 0.24em; margin-bottom: 20px; }
  .service-price { font-size: 42px; }
  .service-price-unit { font-size: 13px; }
  .service-desc { font-size: 12.5px; line-height: 1.9; }
  .service-includes li { font-size: 12px; }
  .service-maint { grid-template-columns: 1fr; gap: 20px; padding: 24px; }
  .service-maint .service-price { font-size: 32px; }

  /* ---- TRUST ---- */
  .trust-list { grid-template-columns: 1fr; }
  .trust-item { padding: 26px 20px; gap: 14px; }
  .trust-icon { width: 38px; height: 38px; font-size: 15px; }
  .trust-body h4 { font-size: 15px; margin-bottom: 6px; }
  .trust-body p { font-size: 12.5px; line-height: 1.85; }
  .trust::before { font-size: 220px; right: -30px; top: 30px; }

  /* ---- AFTER ---- */
  .after-grid { grid-template-columns: 1fr; gap: 16px; }
  .after-card { padding: 30px 24px; }
  .after-kicker { font-size: 10px; letter-spacing: 0.22em; }
  .after-title { font-size: 16px; line-height: 1.6; }
  .after-desc { font-size: 12.5px; }

  /* ---- FLOW ---- */
  .flow-list {
    grid-template-columns: 1fr;
    gap: 28px;
    position: relative;
  }
  .flow-list::before {
    display: block;
    content: '';
    position: absolute;
    left: 21px;
    top: 22px;
    bottom: 22px;
    width: 1px;
    background: var(--hairline);
  }
  .flow-step {
    display: grid;
    grid-template-columns: 44px 1fr;
    grid-template-areas:
      "num title"
      "num note";
    column-gap: 18px;
    row-gap: 0;
    text-align: left;
    padding: 0;
    position: relative;
  }
  .flow-num {
    grid-area: num;
    align-self: start;
    width: 44px; height: 44px;
    font-size: 15px;
    margin: 0;
    z-index: 2;
  }
  .flow-title {
    grid-area: title;
    font-size: 15px;
    margin-bottom: 8px;
    line-height: 1.5;
    padding-top: 9px;
    color: var(--sumi);
    font-weight: 500;
  }
  .flow-note {
    grid-area: note;
    font-size: 13px;
    line-height: 1.95;
    color: var(--sumi-soft);
    letter-spacing: 0.02em;
    margin: 0;
  }

  /* ---- FAQ ---- */
  .faq-question { font-size: 13.5px; padding: 20px 0; gap: 12px; align-items: flex-start; }
  .faq-q-num { font-size: 10.5px; margin-right: 6px; letter-spacing: 0.22em; }
  .faq-icon { width: 30px; height: 30px; margin-top: -2px; }
  .faq-icon::before { width: 10px; }
  .faq-icon::after { height: 10px; }
  .faq-answer-inner { padding: 0 0 22px 0; font-size: 12.5px; line-height: 1.95; }

  /* ---- OPEN ---- */
  .open-card { padding: 36px 22px; }
  .open-lead { font-size: 13.5px; line-height: 2; margin-bottom: 32px; padding-bottom: 28px; }
  .open-list { gap: 22px; margin-bottom: 32px; }
  .open-item { grid-template-columns: 1fr; gap: 8px; }
  .open-item-num {
    border-right: none;
    border-bottom: 1px solid var(--hairline);
    padding: 0 0 8px;
    font-size: 20px;
  }
  .open-item-title { font-size: 15px; }
  .open-item-body { font-size: 12.5px; line-height: 1.9; }
  .open-cta-note { font-size: 11px; }

  /* ---- ISLAND BANNER ---- */
  .island-banner { min-height: 50vh; }
  .island-banner-kicker { font-size: 10px; letter-spacing: 0.35em; margin-bottom: 18px; }
  .island-banner-line { font-size: 26px; letter-spacing: 0.05em; line-height: 1.55; }
  .island-banner-place { margin-top: 18px; font-size: 10px; letter-spacing: 0.22em; }

  /* ---- CONTACT ---- */
  .contact { padding: 96px var(--gutter); }
  .contact-title { font-size: 32px; line-height: 1.5; margin-bottom: 22px; }
  .contact-lead { font-size: 13px; line-height: 2; margin-bottom: 40px; }
  .contact-tel { font-size: 38px; letter-spacing: 0.04em; }
  .contact-tel-note { font-size: 10px; letter-spacing: 0.22em; margin-bottom: 36px; }
  .contact-alt { gap: 22px; padding-top: 28px; }
  .contact-alt-label { font-size: 9px; }
  .contact-alt-value { font-size: 13px; }
  .contact-hours { font-size: 11px; line-height: 1.85; margin-top: 28px; }

  /* ---- FOOTER ---- */
  .footer-inner { flex-direction: column; align-items: flex-start; gap: 22px; }
  .footer-brand { font-size: 20px; }
  .footer-tag { font-size: 10px; }
  .footer-nav { gap: 16px 20px; }
  .footer-nav a { font-size: 11px; }
  .footer-bottom { flex-direction: column; gap: 6px; font-size: 9.5px; }

  /* ---- SCROLL TOP ---- */
  .scroll-top { bottom: 20px; right: 16px; width: 40px; height: 40px; font-size: 14px; }

  /* ---- PRELOADER ---- */
  .pre-brand { gap: 22px; font-size: 42px; }
  .pre-tagline { font-size: 10px; letter-spacing: 0.4em; top: calc(50% + 52px); }
  .droplet { width: 14px; height: 24px; margin-left: -7px; margin-top: -12px; }
}

@media (max-width: 420px) {
  :root { --gutter: 16px; }
  section { padding: 64px var(--gutter); }
  .hero-title { font-size: 28px; }
  .hero-sub { font-size: 13px; }
  .section-title { font-size: 23px; }
  .about-body .about-name { font-size: 26px; }
  .credo-no { font-size: 58px; }
  .credo-jp { font-size: 24px; }
  .service-price { font-size: 36px; }
  .contact-tel { font-size: 32px; }
  .island-banner-line { font-size: 22px; }
  .work-mock-title { font-size: 22px; }
}