/* ============================================================
   KUJIRANOKOE — style.css v3
   Sea Surface → Deep Abyss — Depth Journey
   ============================================================ */

/* ---------- Variables ---------- */
:root {
  /* 深度カラー：海面 → 深海 */
  --c-surface-bright: #1a7fa0;   /* 海面・光の届く浅瀬 */
  --c-surface:        #0d5070;   /* 浅い海 */
  --c-mid-upper:      #083350;   /* 中層上部 */
  --c-mid:            #051e35;   /* 中層 */
  --c-deep-upper:     #031525;   /* 深層上部 */
  --c-deep:           #020d1a;   /* 深層 */
  --c-abyss:          #010810;   /* 深淵 */
  --c-void:           #000508;   /* 最深部 */

  /* アクセント */
  --c-glow:    #00d8e8;
  --c-glow2:   #4db8ff;
  --c-biolum:  #00f5d4;
  --c-sunray:  rgba(180, 230, 255, 0.18);
  --c-foam:    #9dcfe0;
  --c-white:   #e4f2f8;
  --c-muted:   #557a90;
  --c-border:  rgba(0, 216, 232, 0.12);
  --c-glass:   rgba(3, 18, 35, 0.7);

  --font-display: 'Cormorant Garamond', 'Georgia', serif;
  --font-body:    'Noto Sans JP', sans-serif;
  --font-mono:    'DM Mono', 'Courier New', monospace;

  --ease-out:  cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in:   cubic-bezier(0.7, 0, 0.84, 0);
  --ease-circ: cubic-bezier(0.25, 0.46, 0.45, 0.94);

  --radius-sm: 4px;
  --radius:    12px;
  --radius-lg: 20px;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  background: var(--c-surface-bright);
  color: var(--c-white);
  font-family: var(--font-body);
  font-weight: 300;
  line-height: 1.85;
  overflow-x: hidden;
  cursor: none;
}
@media (pointer: coarse) { body { cursor: auto; } }
img, video, canvas { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
input, textarea, select, button { font-family: inherit; }
em { font-style: italic; color: var(--c-glow); }

/* ---- 奥行き感・固定背景レイヤー ---- */
.ocean-depth-layer {
  position: fixed;
  inset: 0;
  z-index: -2;
  background: radial-gradient(
    ellipse 100% 80% at 50% 0%,
    rgba(30, 140, 180, 0.4) 0%,
    transparent 60%
  );
  pointer-events: none;
  transition: opacity 0.8s;
}

/* 深度インジケーター（右サイド） */
.depth-indicator {
  position: fixed;
  right: 2rem;
  top: 50%;
  transform: translateY(-50%);
  z-index: 50;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  opacity: 0;
  transition: opacity 0.5s;
}
.depth-indicator.visible { opacity: 1; }
.depth-indicator-line {
  width: 1px;
  height: 80px;
  background: rgba(0,216,232,0.15);
  position: relative;
  border-radius: 1px;
  overflow: hidden;
}
.depth-indicator-fill {
  position: absolute;
  top: 0; left: 0; right: 0;
  background: linear-gradient(to bottom, var(--c-glow), rgba(0,216,232,0.3));
  border-radius: 1px;
  transition: height 0.3s var(--ease-out);
  height: 0%;
}
.depth-indicator-label {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  letter-spacing: 0.2em;
  color: rgba(0,216,232,0.4);
  writing-mode: vertical-rl;
}
@media (max-width: 900px) { .depth-indicator { display: none; } }

/* ---------- Container ---------- */
.container { max-width: 1120px; margin: 0 auto; padding: 0 2.5rem; }
.section { padding: 10rem 0; }

/* ---------- Section label ---------- */
.section-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--c-glow);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.2rem;
}
.section-label::before {
  content: '';
  display: block;
  width: 32px;
  height: 1px;
  background: var(--c-glow);
  opacity: 0.6;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 300;
  line-height: 1.1;
  letter-spacing: 0.02em;
  margin-bottom: 1.5rem;
}

.section-desc {
  font-size: 0.92rem;
  color: var(--c-foam);
  line-height: 2;
  margin-bottom: 4rem;
}

/* ---------- Grain overlay ---------- */
.grain {
  position: fixed;
  inset: -50%;
  z-index: 9999;
  pointer-events: none;
  opacity: 0.028;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-size: 256px 256px;
  animation: grain-shift 0.5s steps(1) infinite;
}
@keyframes grain-shift {
  0%   { transform: translate(0, 0); }
  10%  { transform: translate(-2%, -3%); }
  20%  { transform: translate(3%, 1%); }
  30%  { transform: translate(-1%, 4%); }
  40%  { transform: translate(4%, -2%); }
  50%  { transform: translate(-3%, 3%); }
  60%  { transform: translate(2%, -4%); }
  70%  { transform: translate(-4%, 2%); }
  80%  { transform: translate(3%, -1%); }
  90%  { transform: translate(-2%, 4%); }
  100% { transform: translate(1%, -3%); }
}

/* ============================================================
   CUSTOM CURSOR
   ============================================================ */
.cursor {
  position: fixed;
  width: 36px;
  height: 36px;
  border: 1px solid rgba(0, 216, 232, 0.6);
  border-radius: 50%;
  pointer-events: none;
  z-index: 10000;
  transform: translate(-50%, -50%);
  transition: width 0.3s var(--ease-out), height 0.3s var(--ease-out),
              border-color 0.3s, opacity 0.3s;
  mix-blend-mode: difference;
}
.cursor.hovering {
  width: 64px;
  height: 64px;
  border-color: var(--c-glow);
}
.cursor-dot {
  position: fixed;
  width: 4px;
  height: 4px;
  background: var(--c-glow);
  border-radius: 50%;
  pointer-events: none;
  z-index: 10001;
  transform: translate(-50%, -50%);
}
@media (pointer: coarse) {
  .cursor, .cursor-dot { display: none; }
}

/* ============================================================
   NAV
   ============================================================ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem 3rem;
  transition: padding 0.4s var(--ease-out), background 0.5s;
}
.nav.scrolled {
  padding: 1rem 3rem;
  background: rgba(1, 8, 16, 0.88);
  backdrop-filter: blur(20px) saturate(1.5);
  border-bottom: 1px solid var(--c-border);
}
.nav-logo {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  letter-spacing: 0.2em;
  color: var(--c-glow);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.nav-logo-whale {
  font-size: 1.1rem;
  animation: whale-pulse 4s ease-in-out infinite;
}
@keyframes whale-pulse {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 1; text-shadow: 0 0 12px var(--c-glow); }
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}
.nav-links a {
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--c-foam);
  transition: color 0.2s;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  position: relative;
}
.nav-num {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--c-glow);
  opacity: 0.5;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--c-glow);
  transition: width 0.3s var(--ease-out);
}
.nav-links a:hover { color: var(--c-white); }
.nav-links a:hover::after { width: 100%; }

.nav-cta {
  padding: 0.55rem 1.3rem;
  border: 1px solid rgba(0,216,232,0.4);
  border-radius: var(--radius-sm);
  color: var(--c-glow) !important;
  transition: background 0.3s, border-color 0.3s, box-shadow 0.3s !important;
}
.nav-cta:hover {
  background: rgba(0,216,232,0.08) !important;
  border-color: var(--c-glow) !important;
  box-shadow: 0 0 20px rgba(0,216,232,0.15) !important;
}
.nav-cta::after { display: none !important; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 1px;
  background: var(--c-white);
  transition: 0.3s;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 1rem 2.2rem;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  cursor: pointer;
  border: none;
  border-radius: var(--radius-sm);
  transition: all 0.35s var(--ease-out);
  position: relative;
  overflow: hidden;
}
.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.3s;
}
.btn:hover::before { opacity: 1; }

.btn-primary {
  background: var(--c-glow);
  color: var(--c-void);
  font-weight: 600;
}
.btn-primary::before { background: rgba(255,255,255,0.15); }
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(0,216,232,0.4), 0 0 0 1px rgba(0,216,232,0.3);
}

.btn-ghost {
  background: transparent;
  color: var(--c-white);
  border: 1px solid rgba(255,255,255,0.2);
}
.btn-ghost:hover {
  border-color: rgba(0,216,232,0.5);
  color: var(--c-glow);
  box-shadow: inset 0 0 20px rgba(0,216,232,0.05);
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.hero-video-wrap {
  position: absolute;
  inset: 0;
  z-index: 1;
}
.hero-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.55;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  background:
    radial-gradient(ellipse 70% 60% at 50% 70%, rgba(0,50,100,0.3) 0%, transparent 70%),
    linear-gradient(180deg,
      rgba(1,8,16,0.2) 0%,
      rgba(1,8,16,0.35) 50%,
      rgba(1,8,16,0.85) 100%
    );
}

.hero-content {
  position: relative;
  z-index: 3;
  text-align: center;
  padding: 2rem;
  max-width: 900px;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.25em;
  color: var(--c-glow);
  border: 1px solid var(--c-border);
  padding: 0.5rem 1.2rem;
  border-radius: 100px;
  margin-bottom: 2.5rem;
  background: rgba(0,216,232,0.04);
  opacity: 0;
  animation: fade-up 0.7s 0.2s var(--ease-out) forwards;
}
.hero-tag-dot {
  width: 5px;
  height: 5px;
  background: var(--c-glow);
  border-radius: 50%;
  animation: blink 2s ease-in-out infinite;
}
@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.2; }
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 6.5vw, 7rem);
  font-weight: 300;
  line-height: 1.15;
  letter-spacing: 0.03em;
  margin-bottom: 2rem;
}
.hero-title-line {
  display: block;
  white-space: nowrap;
  opacity: 0;
  animation: fade-up 0.9s var(--ease-out) forwards;
}
.hero-title-line[data-delay="0"] { animation-delay: 0.35s; }
.hero-title-line[data-delay="1"] { animation-delay: 0.5s; font-style: italic; color: var(--c-glow); }
.hero-title-line[data-delay="2"] { animation-delay: 0.65s; }

.hero-sub {
  font-size: clamp(0.88rem, 2vw, 1rem);
  color: var(--c-foam);
  line-height: 2.1;
  margin-bottom: 3rem;
  opacity: 0;
  animation: fade-up 0.9s 0.8s var(--ease-out) forwards;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  opacity: 0;
  animation: fade-up 0.9s 0.95s var(--ease-out) forwards;
}

.hero-bottom {
  position: absolute;
  bottom: 2.5rem;
  left: 0; right: 0;
  z-index: 3;
  display: flex;
  justify-content: center;
  align-items: flex-end;
  padding: 0 3rem;
  opacity: 0;
  animation: fade-in 1s 1.5s forwards;
}

.hero-depth { display: none; }
.hero-scroll-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}
.hero-scroll-line {
  width: 1px;
  height: 60px;
  background: linear-gradient(to bottom, var(--c-glow), transparent);
  animation: scroll-pulse 2.5s ease-in-out infinite;
}
@keyframes scroll-pulse {
  0% { transform: scaleY(1) translateY(0); opacity: 1; }
  100% { transform: scaleY(0.3) translateY(15px); opacity: 0; }
}
.hero-scroll-text {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.3em;
  color: var(--c-muted);
  writing-mode: vertical-rl;
}

.hero-depth {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  color: var(--c-muted);
}

/* ============================================================
   ABOUT
   ============================================================ */
.about {
  position: relative;
  background: linear-gradient(180deg, var(--c-mid-upper) 0%, var(--c-mid) 100%);
  overflow: hidden;
}

.about-bg-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--font-display);
  font-size: clamp(8rem, 20vw, 18rem);
  font-weight: 300;
  color: transparent;
  -webkit-text-stroke: 1px rgba(0,216,232,0.05);
  pointer-events: none;
  user-select: none;
  white-space: nowrap;
  letter-spacing: 0.1em;
}

.about-inner {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 6rem;
  align-items: center;
}

.about-left {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
.about-hz-wrap {
  position: relative;
  margin-bottom: 2.5rem;
}
.about-hz {
  font-family: var(--font-display);
  font-size: clamp(7rem, 16vw, 13rem);
  font-weight: 300;
  color: transparent;
  -webkit-text-stroke: 1.5px rgba(0,216,232,0.35);
  line-height: 1;
  letter-spacing: -0.03em;
  position: relative;
}
.about-hz-unit {
  position: absolute;
  top: 1.5rem;
  right: -1.5rem;
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--c-glow);
  letter-spacing: 0.15em;
}

.about-wave-lines { display: flex; flex-direction: column; gap: 10px; }
.wl {
  height: 1px;
  width: var(--w, 60%);
  background: linear-gradient(to right, var(--c-glow), transparent);
  opacity: 0.4;
  animation: wave-in 3s var(--d, 0s) ease-in-out infinite alternate;
}
@keyframes wave-in {
  0%   { opacity: 0.2; transform: scaleX(0.8); }
  100% { opacity: 0.6; transform: scaleX(1.05); }
}

.about-right .section-title {
  margin-bottom: 0.5rem;
}
.about-lead {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-style: italic;
  color: var(--c-foam);
  margin-bottom: 2rem;
  line-height: 1.5;
}
.about-body {
  font-size: 0.9rem;
  color: rgba(228,242,248,0.75);
  line-height: 2.1;
  margin-bottom: 1.4rem;
}

/* ============================================================
   SERVICES
   ============================================================ */
.services {
  background: linear-gradient(180deg, var(--c-mid) 0%, var(--c-deep-upper) 100%);
  position: relative;
  overflow: hidden;
  padding-bottom: 12rem;
}
.services-bg-glow {
  position: absolute;
  top: 30%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 600px;
  background: radial-gradient(ellipse, rgba(0,100,150,0.12) 0%, transparent 70%);
  pointer-events: none;
}
.services-header {
  margin-bottom: 5rem;
}

/* Services Grid */
.services-track-wrap {
  position: relative;
}
.services-track {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--c-border);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 2.5rem;
  box-sizing: border-box;
}

.service-card {
  background: var(--c-glass);
  backdrop-filter: blur(10px);
  padding: 3rem 2.5rem;
  position: relative;
  transition: background 0.4s var(--ease-out);
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 40% at 50% 0%, rgba(0,216,232,0.06) 0%, transparent 70%);
  opacity: 0;
  transition: opacity 0.4s;
}
.service-card:hover { background: rgba(6, 30, 56, 0.9); }
.service-card:hover::before { opacity: 1; }

.service-card--highlight {
  background: rgba(0, 216, 232, 0.04);
  border-left: 1px solid rgba(0,216,232,0.2);
  border-right: 1px solid rgba(0,216,232,0.2);
}

.service-card-inner { height: 100%; display: flex; flex-direction: column; }

.service-num {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: var(--c-glow);
  opacity: 0.4;
  margin-bottom: 2rem;
}

.service-icon-wrap {
  margin-bottom: 2rem;
  transition: transform 0.4s var(--ease-out);
}
.service-card:hover .service-icon-wrap { transform: translateY(-4px); }

.service-name {
  font-family: var(--font-display);
  font-size: 1.55rem;
  font-weight: 400;
  line-height: 1.25;
  margin-bottom: 1.2rem;
  letter-spacing: 0.02em;
}

.service-desc {
  font-size: 0.92rem;
  color: var(--c-foam);
  line-height: 2;
  flex: 1;
}

.service-card-line {
  height: 1px;
  margin-top: 2rem;
  background: linear-gradient(to right, var(--c-glow), transparent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s var(--ease-out);
}
.service-card:hover .service-card-line { transform: scaleX(1); }

/* ============================================================
   MODEL
   ============================================================ */
.model {
  background: linear-gradient(180deg, var(--c-deep-upper) 0%, var(--c-deep) 100%);
}

.model-header { margin-bottom: 5rem; }

.model-pillar-wrap {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 0;
  align-items: stretch;
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 3rem;
}

.model-pillar {
  padding: 3.5rem 3rem;
  position: relative;
  overflow: hidden;
  transition: background 0.4s;
}
.model-pillar:hover { background: rgba(0,216,232,0.03); }

.model-pillar-glow {
  position: absolute;
  top: -40%;
  left: 50%;
  transform: translateX(-50%);
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(0,216,232,0.08) 0%, transparent 70%);
  pointer-events: none;
  transition: opacity 0.4s;
  opacity: 0;
}
.model-pillar:hover .model-pillar-glow { opacity: 1; }

.model-pillar-content h3 {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 400;
  line-height: 1.25;
  margin: 1rem 0 1.2rem;
}
.model-pillar-content p {
  font-size: 0.92rem;
  color: var(--c-foam);
  line-height: 2;
}

.model-pillar-num {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: var(--c-glow);
}

.model-connector {
  width: 80px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem 0;
  border-left: 1px solid var(--c-border);
  border-right: 1px solid var(--c-border);
  background: rgba(0,216,232,0.02);
  gap: 1rem;
}
.model-connector-line {
  width: 1px;
  flex: 1;
  background: linear-gradient(to bottom, transparent, rgba(0,216,232,0.3), transparent);
}
.model-connector-symbol {
  font-family: var(--font-display);
  font-size: 1.8rem;
  color: var(--c-glow);
  opacity: 0.5;
  font-weight: 300;
}

.model-quote {
  text-align: center;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-style: italic;
  font-weight: 300;
  line-height: 1.8;
  color: var(--c-foam);
  padding: 2.5rem;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  max-width: 700px;
  margin: 0 auto;
  position: relative;
}
.model-quote::before {
  content: '"';
  position: absolute;
  top: -0.5rem;
  left: 2rem;
  font-family: var(--font-display);
  font-size: 4rem;
  color: var(--c-glow);
  opacity: 0.2;
  line-height: 1;
}

/* ============================================================
   WORKS
   ============================================================ */
.works {
  background: linear-gradient(180deg, var(--c-deep) 0%, var(--c-abyss) 100%);
}
.works-header { margin-bottom: 4rem; }

.works-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 1.5rem;
  align-items: stretch;
}

.work-card {
  border-radius: var(--radius-lg);
  border: 1px solid var(--c-border);
  overflow: hidden;
  position: relative;
  transition: border-color 0.4s, transform 0.4s var(--ease-out);
  background: var(--c-glass);
  display: flex;
  flex-direction: column;
}
.work-card:hover {
  border-color: rgba(0,216,232,0.3);
  transform: translateY(-4px);
}

.work-card-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 30% 0%, rgba(0,80,120,0.3) 0%, transparent 60%),
    linear-gradient(135deg, rgba(0,30,60,0.5) 0%, transparent 50%);
}

.work-card-content {
  position: relative;
  z-index: 1;
  padding: 3rem;
  flex: 1;
}

.work-card-num {
  position: absolute;
  bottom: 2rem;
  right: 2.5rem;
  font-family: var(--font-display);
  font-size: 5rem;
  font-weight: 300;
  color: transparent;
  -webkit-text-stroke: 1px rgba(0,216,232,0.08);
  line-height: 1;
  pointer-events: none;
  transition: opacity 0.4s;
}
.work-card:hover .work-card-num { -webkit-text-stroke-color: rgba(0,216,232,0.15); }

.work-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  padding: 0.35rem 0.9rem;
  border-radius: 100px;
  margin-bottom: 1.5rem;
  background: rgba(0,216,232,0.1);
  border: 1px solid rgba(0,216,232,0.3);
  color: var(--c-glow);
}
.work-badge--sub {
  background: rgba(0,150,255,0.08);
  border-color: rgba(0,150,255,0.25);
  color: var(--c-glow2);
}
.work-badge-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: currentColor;
  animation: blink 2s ease-in-out infinite;
}

.work-title {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 400;
  line-height: 1.2;
  margin-bottom: 1.2rem;
}

.work-desc {
  font-size: 0.92rem;
  color: var(--c-foam);
  line-height: 2;
  margin-bottom: 2rem;
}

.work-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.work-tags span {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  padding: 0.28rem 0.75rem;
  border: 1px solid var(--c-border);
  border-radius: 2px;
  color: var(--c-foam);
  letter-spacing: 0.06em;
}

/* ============================================================
   PROFILE
   ============================================================ */
.profile {
  background: linear-gradient(180deg, var(--c-abyss) 0%, var(--c-void) 100%);
  position: relative;
  overflow: hidden;
}
.profile-bg-line {
  position: absolute;
  top: 0; bottom: 0;
  left: 38%;
  width: 1px;
  background: linear-gradient(to bottom, transparent, var(--c-border), transparent);
  pointer-events: none;
}

.profile-inner {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 6rem;
  align-items: start;
}

.profile-photo-frame {
  position: relative;
}
.profile-photo {
  width: 100%;
  border-radius: var(--radius);
  aspect-ratio: 3/4;
  object-fit: cover;
  filter: saturate(0.8);
}
.profile-photo-placeholder {
  width: 100%;
  aspect-ratio: 3/4;
  border-radius: var(--radius);
  background: var(--c-glass);
  border: 1px dashed var(--c-border);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  color: var(--c-muted);
  font-family: var(--font-mono);
  font-size: 0.75rem;
}
.profile-photo-placeholder small {
  font-size: 0.62rem;
  opacity: 0.5;
}
.profile-photo-deco {
  position: absolute;
  inset: -8px;
  border: 1px solid var(--c-border);
  border-radius: calc(var(--radius) + 8px);
  pointer-events: none;
}
.profile-photo-caption {
  margin-top: 1rem;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.15em;
  color: var(--c-muted);
}

.profile-name {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 300;
  line-height: 1.1;
  letter-spacing: 0.05em;
  margin-bottom: 0.4rem;
}
.profile-name-en {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--c-muted);
  margin-bottom: 0.5rem;
}
.profile-role {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--c-glow);
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--c-border);
}
.profile-bio {
  font-size: 0.88rem;
  color: rgba(228,242,248,0.75);
  line-height: 2.1;
  margin-bottom: 1rem;
}

.profile-stats {
  display: flex;
  gap: 2.5rem;
  margin: 2rem 0;
  padding: 2rem 0;
  border-top: 1px solid var(--c-border);
  border-bottom: 1px solid var(--c-border);
}
.profile-stat { display: flex; flex-direction: column; gap: 0.2rem; }
.profile-stat-val {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 300;
  color: var(--c-glow);
  line-height: 1;
}
.profile-stat-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  color: var(--c-muted);
}

.profile-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.5rem;
}
.profile-tags span {
  font-size: 0.72rem;
  padding: 0.35rem 0.9rem;
  background: rgba(0,216,232,0.06);
  border: 1px solid var(--c-border);
  border-radius: 2px;
  color: var(--c-foam);
  letter-spacing: 0.04em;
}

/* ============================================================
   CONTACT
   ============================================================ */
.contact {
  background: linear-gradient(180deg, var(--c-void) 0%, #000305 100%);
  position: relative;
  overflow: hidden;
}
.contact-bg-glow {
  position: absolute;
  top: 0; left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(0,150,200,0.1) 0%, transparent 70%);
  pointer-events: none;
}

.contact-inner {
  max-width: 780px;
  margin: 0 auto;
}
.contact-note {
  font-size: 0.88rem;
  color: var(--c-foam);
  line-height: 2;
  margin-bottom: 3.5rem;
}

/* Form */
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-bottom: 1.75rem;
}
.form-group label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  color: var(--c-foam);
  text-transform: uppercase;
}
.required { color: var(--c-glow); margin-left: 0.3rem; }

.form-group input,
.form-group select,
.form-group textarea {
  background: rgba(6, 30, 56, 0.7);
  border: 1px solid rgba(0,216,232,0.15);
  border-radius: var(--radius-sm);
  color: var(--c-white);
  padding: 0.9rem 1.1rem;
  font-size: 0.88rem;
  font-weight: 300;
  transition: border-color 0.3s, box-shadow 0.3s;
  outline: none;
  width: 100%;
  -webkit-appearance: none;
  appearance: none;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--c-muted); }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--c-glow);
  box-shadow: 0 0 0 3px rgba(0,216,232,0.08), inset 0 0 20px rgba(0,216,232,0.03);
}
.form-group select option { background: var(--c-deep); }

.error-text {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: #ff6b8a;
  min-height: 1em;
  letter-spacing: 0.05em;
}

.form-privacy {
  margin-bottom: 2.5rem;
}
.checkbox-label {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  font-size: 0.82rem;
  color: var(--c-foam);
  cursor: pointer;
}
.checkbox-label input[type="checkbox"] { display: none; }
.checkbox-custom {
  width: 18px;
  height: 18px;
  border: 1px solid rgba(0,216,232,0.3);
  border-radius: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: 0.2s;
  position: relative;
}
.checkbox-label input:checked + .checkbox-custom {
  background: var(--c-glow);
  border-color: var(--c-glow);
}
.checkbox-label input:checked + .checkbox-custom::after {
  content: '✓';
  position: absolute;
  font-size: 11px;
  color: var(--c-void);
  font-weight: 700;
}

.form-submit-wrap { text-align: center; }
.btn-submit { min-width: 200px; justify-content: center; }

.form-message {
  margin-top: 2rem;
  padding: 1.2rem 1.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  text-align: center;
}
.form-message.success {
  background: rgba(0,216,232,0.08);
  border: 1px solid rgba(0,216,232,0.4);
  color: var(--c-glow);
}
.form-message.error {
  background: rgba(255,107,138,0.08);
  border: 1px solid rgba(255,107,138,0.4);
  color: #ff8fa3;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: #000204;
  border-top: 1px solid var(--c-border);
  padding: 4rem 0 2.5rem;
}
.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 3rem;
  gap: 2rem;
}
.footer-logo {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--c-glow);
  letter-spacing: 0.2em;
  margin-bottom: 0.5rem;
}
.footer-tagline { font-size: 0.8rem; color: var(--c-muted); }
.footer-nav { display: flex; gap: 2rem; flex-wrap: wrap; justify-content: flex-end; align-items: center; }
.footer-nav a { font-size: 0.75rem; color: var(--c-muted); letter-spacing: 0.06em; transition: color 0.2s; }
.footer-nav a:hover { color: var(--c-glow); }

.footer-hz-line {
  text-align: center;
  padding: 2rem 0;
  border-top: 1px solid var(--c-border);
  border-bottom: 1px solid var(--c-border);
  margin-bottom: 2rem;
}
.footer-hz-text {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.4em;
  color: var(--c-muted);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--c-muted);
  letter-spacing: 0.06em;
}

/* ============================================================
   SCROLL REVEAL
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   KEYFRAMES
   ============================================================ */
@keyframes fade-up {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .services-track { grid-template-columns: repeat(2, 1fr); }
  .works-grid { grid-template-columns: 1fr; }
}

@media (max-width: 860px) {
  .about-inner { grid-template-columns: 1fr; gap: 3rem; }
  .about-left { flex-direction: row; gap: 3rem; align-items: flex-end; }
  .about-hz { font-size: 6rem; }
  .model-pillar-wrap { grid-template-columns: 1fr; }
  .model-connector { width: 100%; height: 50px; flex-direction: row; border: none; border-top: 1px solid var(--c-border); border-bottom: 1px solid var(--c-border); padding: 0 2rem; }
  .model-connector-line { width: auto; height: 1px; flex: 1; background: linear-gradient(to right, transparent, rgba(0,216,232,0.3), transparent); }
  .profile-inner { grid-template-columns: 1fr; }
  .profile-photo-frame { max-width: 220px; }
}

@media (max-width: 640px) {
  .section { padding: 6rem 0; }
  .container { padding: 0 1.5rem; }
  .nav { padding: 1rem 1.5rem; }
  .nav.scrolled { padding: 0.8rem 1.5rem; }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    background: rgba(1,8,16,0.98);
    flex-direction: column;
    padding: 2rem 1.5rem;
    gap: 1.5rem;
    border-bottom: 1px solid var(--c-border);
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }

  .hero-title { font-size: clamp(2.8rem, 12vw, 4rem); }
  .hero-bottom { padding: 0 1.5rem; }
  .hero-depth { display: none; }

  .services-track { grid-template-columns: 1fr; padding: 0 1.5rem; }
  .about-left { flex-direction: column; }
  .form-row { grid-template-columns: 1fr; gap: 0; }
  .footer-top { flex-direction: column; }
  .footer-nav { justify-content: flex-start; }
  .footer-bottom { flex-direction: column; gap: 0.5rem; text-align: center; }
  .profile-stats { gap: 1.5rem; }
  .hero-title { font-size: clamp(2rem, 10vw, 3rem); }
  .hero-actions { flex-direction: column; align-items: center; }
}

/* ============================================================
   FAQ
   ============================================================ */
.faq {
  background: linear-gradient(180deg, #000305 0%, #000204 100%);
}
.faq-header { margin-bottom: 3rem; }
.faq-list { max-width: 780px; margin: 0 auto; }
.faq-item {
  border-bottom: 1px solid var(--c-border);
  padding: 2rem 0;
}
.faq-item:first-child { border-top: 1px solid var(--c-border); }
.faq-q {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 400;
  margin-bottom: 1rem;
  color: var(--c-white);
  line-height: 1.5;
  cursor: default;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}
.faq-q::before {
  content: 'Q';
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--c-glow);
  letter-spacing: 0.1em;
  padding: 0.25rem 0.5rem;
  border: 1px solid var(--c-border);
  border-radius: 2px;
  flex-shrink: 0;
  margin-top: 0.2rem;
}
.faq-a {
  font-size: 0.9rem;
  color: var(--c-foam);
  line-height: 2;
  padding-left: 2.5rem;
}

/* ============================================================
   Profile Credentials Badges
   ============================================================ */
.profile-credentials {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.8rem;
  padding: 1.2rem 1.5rem;
  background: rgba(0, 216, 232, 0.04);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  border-left: 2px solid var(--c-glow);
}
.profile-credential {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--c-foam);
}
.profile-credential-dot {
  width: 5px;
  height: 5px;
  background: var(--c-glow);
  border-radius: 50%;
  flex-shrink: 0;
}
.work-card strong, .profile-bio strong {
  color: var(--c-white);
  font-weight: 500;
}

/* ============================================================
   Screen Reader Only — GEO/アクセシビリティ用非表示テキスト
   ============================================================ */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ============================================================
   パフォーマンス最適化
   ============================================================ */
/* スマホではCanvasアニメーションを軽量化 */
@media (max-width: 640px) {
  .hero-canvas {
    opacity: 0.7;
  }
}
/* フォント読み込み中のレイアウトシフト防止 */
html {
  font-display: swap;
}