/* CSS Variables */
:root {
  --bg: #eef6ff;
  --bg-strong: #dff8ed;
  --bg-end: #fff4cf;
  --shine: rgba(255, 255, 255, 0.72);
  --warm-band: rgba(255, 204, 77, 0.2);
  --game-grid: rgba(37, 99, 235, 0.12);
  --game-grid-strong: rgba(20, 184, 166, 0.18);
  --scanline: rgba(24, 33, 23, 0.045);
  --text: #182117;
  --sub: #52624e;
  --scene-main: #2f8f46;
  --accent: #ffb000;
  --accent-soft: #fff0b8;
  --accent-2: #23a6d5;
  --danger: #ef476f;
  --card: rgba(255, 255, 247, 0.92);
  --border: rgba(47, 143, 70, 0.28);
  --header-bg: rgba(244, 247, 234, 0.86);
  --shadow-soft: 0 14px 0 rgba(24, 33, 23, 0.1), 0 22px 44px rgba(47, 143, 70, 0.12);
  --pixel-shadow: 3px 3px 0 rgba(24, 33, 23, 0.16);
}

html[data-theme="dark"] {
  --bg: #07111f;
  --bg-strong: #0b1f29;
  --bg-end: #191334;
  --shine: rgba(76, 201, 240, 0.09);
  --warm-band: rgba(255, 176, 0, 0.12);
  --game-grid: rgba(76, 201, 240, 0.12);
  --game-grid-strong: rgba(99, 224, 111, 0.16);
  --scanline: rgba(245, 255, 232, 0.045);
  --text: #f5ffe8;
  --sub: #bfd4b8;
  --scene-main: #63e06f;
  --accent: #ffd166;
  --accent-soft: rgba(255, 209, 102, 0.16);
  --accent-2: #4cc9f0;
  --danger: #ff5d8f;
  --card: rgba(24, 27, 32, 0.9);
  --border: rgba(99, 224, 111, 0.34);
  --header-bg: rgba(23, 24, 31, 0.86);
  --shadow-soft: 0 14px 0 rgba(0, 0, 0, 0.22), 0 24px 52px rgba(0, 0, 0, 0.34);
  --pixel-shadow: 3px 3px 0 rgba(0, 0, 0, 0.38);
}

/* Keyframe Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideUpFade {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInTitle {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes introTitleIn {
  0% {
    opacity: 0;
    transform: translateY(14px);
    filter: blur(6px);
  }
  42%,
  68% {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0);
  }
  100% {
    opacity: 0;
    transform: translateY(-18px);
    filter: blur(4px);
  }
}

@keyframes loadingRing {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

@keyframes introSplashOut {
  0%,
  62% {
    opacity: 1;
    transform: translateY(0);
    visibility: visible;
  }
  100% {
    opacity: 0;
    transform: translateY(-100%);
    visibility: hidden;
  }
}

/* Reset & Base Styles */
* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-offset, 96px);
}

body {
  position: relative;
  isolation: isolate;
  margin: 0;
  font-family: "Hiragino Maru Gothic ProN", "Yu Gothic", "YuGothic", "Noto Sans JP", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    linear-gradient(118deg, var(--shine) 0 12%, transparent 12% 42%, var(--warm-band) 42% 48%, transparent 48%),
    linear-gradient(152deg, transparent 0 18%, color-mix(in srgb, var(--accent-2) 13%, transparent) 18% 19%, transparent 19% 56%, color-mix(in srgb, var(--scene-main) 12%, transparent) 56% 57%, transparent 57%),
    repeating-linear-gradient(0deg, transparent 0 9px, var(--scanline) 9px 10px),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-strong) 48%, var(--bg-end) 100%);
  background-attachment: fixed;
  color: var(--text);
  line-height: 1.8;
  animation: fadeIn 0.6s ease-in-out;
  transition: color 0.45s ease;
  overflow-x: clip;
}

section[id] {
  scroll-margin-top: calc(var(--header-offset, 96px) + 12px);
}

body.scene-intro {
  --scene-main: #2563eb;
}

body.scene-skills {
  --scene-main: #0891b2;
}

body.scene-works {
  --scene-main: #14b8a6;
}

body.scene-links {
  --scene-main: #db2777;
}

body.scene-contact {
  --scene-main: #f97316;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.72;
  transition: background 0.8s ease, opacity 0.6s ease;
  background-image:
    linear-gradient(var(--game-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--game-grid) 1px, transparent 1px),
    linear-gradient(var(--game-grid-strong) 2px, transparent 2px),
    linear-gradient(90deg, var(--game-grid-strong) 2px, transparent 2px);
  background-position: center top;
  background-size: 28px 28px, 28px 28px, 140px 140px, 140px 140px;
  mask-image: linear-gradient(180deg, black 0%, rgba(0, 0, 0, 0.7) 52%, transparent 100%);
}

body::after {
  content: "";
  position: fixed;
  inset: -20% -10%;
  z-index: -1;
  pointer-events: none;
  opacity: 0.42;
  background-image:
    linear-gradient(118deg, transparent 0 12%, color-mix(in srgb, var(--accent-2) 16%, transparent) 12% 12.8%, transparent 12.8% 44%, color-mix(in srgb, var(--accent) 16%, transparent) 44% 44.8%, transparent 44.8%),
    linear-gradient(62deg, transparent 0 64%, color-mix(in srgb, var(--scene-main) 16%, transparent) 64% 65%, transparent 65%),
    repeating-linear-gradient(130deg, color-mix(in srgb, var(--scene-main) 10%, transparent) 0 2px, transparent 2px 34px);
  mix-blend-mode: multiply;
  transition: opacity 0.6s ease;
}

html[data-theme="dark"] body::after {
  mix-blend-mode: screen;
}

body.scene-intro::before {
  background-image:
    linear-gradient(rgba(37, 99, 235, 0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(20, 184, 166, 0.08) 1px, transparent 1px),
    linear-gradient(rgba(37, 99, 235, 0.16) 2px, transparent 2px),
    linear-gradient(90deg, rgba(20, 184, 166, 0.12) 2px, transparent 2px);
}

body.scene-skills::before {
  background-image:
    linear-gradient(rgba(8, 145, 178, 0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(249, 115, 22, 0.06) 1px, transparent 1px),
    linear-gradient(rgba(8, 145, 178, 0.16) 2px, transparent 2px),
    linear-gradient(90deg, rgba(249, 115, 22, 0.1) 2px, transparent 2px);
}

body.scene-works::before {
  background-image:
    linear-gradient(rgba(20, 184, 166, 0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37, 99, 235, 0.06) 1px, transparent 1px),
    linear-gradient(rgba(20, 184, 166, 0.16) 2px, transparent 2px),
    linear-gradient(90deg, rgba(37, 99, 235, 0.1) 2px, transparent 2px);
}

body.scene-links::before {
  background-image:
    linear-gradient(rgba(219, 39, 119, 0.09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(249, 115, 22, 0.06) 1px, transparent 1px),
    linear-gradient(rgba(219, 39, 119, 0.14) 2px, transparent 2px),
    linear-gradient(90deg, rgba(249, 115, 22, 0.1) 2px, transparent 2px);
}

body.scene-contact::before {
  background-image:
    linear-gradient(rgba(249, 115, 22, 0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(20, 184, 166, 0.06) 1px, transparent 1px),
    linear-gradient(rgba(249, 115, 22, 0.14) 2px, transparent 2px),
    linear-gradient(90deg, rgba(20, 184, 166, 0.1) 2px, transparent 2px);
}

body.scene-skills::after {
  opacity: 0.24;
}

body.scene-works::after {
  opacity: 0.28;
}

body.scene-links::after {
  opacity: 0.26;
}

body.scene-contact::after {
  opacity: 0.22;
}

body.scene-works .card,
body.scene-contact .card {
  box-shadow: var(--shadow-soft);
}

/* Header & Navigation */
header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--header-bg);
  backdrop-filter: blur(16px);
  border-bottom: 3px solid var(--border);
  padding: 14px 8%;
  display: grid;
  grid-template-columns: minmax(150px, 1fr) auto minmax(150px, 1fr);
  column-gap: 20px;
  align-items: center;
}

.header-actions {
  display: flex;
  gap: 8px;
  align-items: center;
  justify-self: end;
  margin-left: 0;
}

header h1 {
  justify-self: start;
  margin: 0;
  font-size: 22px;
  font-weight: 900;
  color: var(--text);
  transition: color 0.45s ease;
}

header h1 a {
  color: inherit;
  text-decoration: none;
  background: linear-gradient(135deg, var(--scene-main), var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: var(--pixel-shadow);
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  z-index: 20;
  background: rgba(255, 255, 255, 0.45);
  backdrop-filter: blur(4px);
}

.scroll-progress #scroll-progress-bar {
  display: block;
  width: 100%;
  height: 100%;
  transform-origin: left center;
  transform: scaleX(0);
  background: linear-gradient(90deg, var(--accent), var(--accent-2), var(--scene-main));
  transition: background 0.45s ease;
}

.scene-indicator {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 18;
  padding: 7px 12px;
  border-radius: 4px;
  font-size: 11px;
  letter-spacing: 0;
  font-weight: 900;
  color: var(--text);
  background: var(--accent-soft);
  border: 1px solid rgba(249, 115, 22, 0.22);
  box-shadow: var(--pixel-shadow);
  transition: background 0.45s ease, transform 0.3s ease;
}

body.scene-intro .scene-indicator {
  transform: translateY(0);
}

body.scene-skills .scene-indicator,
body.scene-works .scene-indicator,
body.scene-contact .scene-indicator {
  transform: translateY(-2px);
}

.theme-toggle {
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--card) 88%, white);
  color: var(--text);
  width: 42px;
  height: 42px;
  border-radius: 6px;
  cursor: pointer;
  margin-left: auto;
  margin-right: 12px;
  font-size: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.theme-toggle:hover {
  transform: translateY(-1px);
}

.theme-toggle:focus-visible,
.menu-toggle:focus-visible,
nav a:focus-visible,
.btn:focus-visible,
.card-links a:focus-visible,
.card-detail:focus-visible,
#contact a:focus-visible {
  outline: 2px solid var(--scene-main);
  outline-offset: 3px;
}

nav {
  display: flex;
  gap: 8px;
  align-items: center;
  justify-self: center;
}

nav a {
  color: var(--text);
  text-decoration: none;
  font-weight: 800;
  border: 1px solid transparent;
  border-radius: 6px;
  padding: 8px 12px;
  transition: color 0.3s, background 0.3s, border-color 0.3s;
}

nav a:hover {
  background: color-mix(in srgb, var(--scene-main) 10%, transparent);
  border-color: var(--border);
  color: var(--scene-main);
  box-shadow: inset 0 -3px 0 color-mix(in srgb, var(--scene-main) 26%, transparent);
}

nav a.is-active {
  background: color-mix(in srgb, var(--scene-main) 12%, transparent);
  color: var(--scene-main);
}

nav a[aria-current="page"] {
  background: color-mix(in srgb, var(--scene-main) 12%, transparent);
  color: var(--scene-main);
}

/* Hamburger Menu */
.menu-toggle {
  display: none;
  flex-direction: column;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  gap: 6px;
}

.menu-toggle span {
  width: 24px;
  height: 3px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.3s;
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(8px, 8px);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

/* Sections */
section {
  max-width: 1000px;
  margin: 0 auto;
  padding: 84px 8%;
  opacity: 0;
  animation: fadeIn 0.6s ease-out forwards;
}

section.in-view {
  animation: fadeIn 0.6s ease-out forwards;
}

section h2 {
  font-size: clamp(30px, 4vw, 42px);
  line-height: 1.25;
  font-weight: 900;
  margin-bottom: 24px;
  position: relative;
  padding-bottom: 12px;
  width: fit-content;
  background: linear-gradient(135deg, var(--text) 0%, var(--scene-main) 52%, var(--accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

section.in-view h2 {
  animation: slideInTitle 0.6s ease-out forwards;
}

section h2::after {
  content: "";
  display: block;
  width: 64px;
  height: 4px;
  background: linear-gradient(90deg, var(--scene-main), var(--accent));
  border-radius: 999px;
  margin-top: 8px;
  transition: background 0.45s ease;
}

section h2::before {
  content: "▶";
  margin-right: 10px;
  color: var(--accent);
  -webkit-text-fill-color: var(--accent);
  text-shadow: var(--pixel-shadow);
}

main {
  display: block;
}

.content {
  max-width: 1000px;
}

.content > .section-lead {
  margin-bottom: 22px;
}

.content h3 {
  margin: 56px 0 18px;
  color: var(--text);
  font-size: clamp(22px, 3vw, 28px);
  line-height: 1.35;
}

.content h3::before {
  content: "";
  display: inline-block;
  width: 9px;
  height: 9px;
  margin-right: 8px;
  border-radius: 2px;
  background: linear-gradient(135deg, var(--scene-main), var(--accent));
  vertical-align: 0.12em;
}

.about-story {
  display: grid;
  gap: 14px;
  max-width: 760px;
  margin-top: 22px;
}

.about-story p {
  margin: 0;
  color: var(--sub);
  font-size: 17px;
  font-weight: 600;
}

.hero {
  position: relative;
  isolation: isolate;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 420px);
  gap: 52px;
  align-items: center;
  max-width: none;
  width: 100%;
  min-height: calc(100vh - var(--header-offset, 96px));
  padding: 72px max(24px, 6%) 92px;
  overflow: hidden;
  color: #f5ffe8;
  background:
    linear-gradient(90deg, rgba(4, 13, 28, 0.9) 0%, rgba(4, 13, 28, 0.66) 42%, rgba(4, 13, 28, 0.28) 100%),
    url("images/hero-hud.png") center / cover no-repeat;
  box-shadow: inset 0 -120px 90px color-mix(in srgb, var(--bg) 82%, transparent);
}

.hero::after {
  content: "";
  position: absolute;
  right: max(18px, 7%);
  top: 15%;
  z-index: -1;
  width: 280px;
  aspect-ratio: 1;
  border: 1px solid color-mix(in srgb, var(--accent-2) 22%, transparent);
  border-radius: 14px;
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--accent-2) 14%, transparent) 50%, transparent 50%),
    linear-gradient(color-mix(in srgb, var(--scene-main) 12%, transparent) 50%, transparent 50%);
  background-size: 18px 18px;
  transform: rotate(5deg);
}

.hero .hero-stage {
  position: absolute;
  left: max(18px, 5%);
  right: max(18px, 5%);
  bottom: 14px;
  z-index: -1;
  max-width: none;
  margin: 0;
  color: rgba(245, 255, 232, 0.08);
  font-size: 160px;
  font-weight: 900;
  line-height: 0.82;
  overflow-wrap: anywhere;
  text-transform: none;
  text-shadow: 0 20px 44px color-mix(in srgb, var(--scene-main) 10%, transparent);
}

.eyebrow {
  display: inline-flex;
  margin: 0 0 14px;
  padding: 6px 10px;
  border: 1px solid color-mix(in srgb, var(--scene-main) 18%, transparent);
  border-radius: 4px;
  background: color-mix(in srgb, var(--scene-main) 8%, var(--card));
  letter-spacing: 0;
  text-transform: uppercase;
  color: var(--scene-main);
  font-size: 12px;
  font-weight: 900;
  transition: color 0.45s ease;
}

.eyebrow::before {
  content: "LV.";
  margin-right: 4px;
  color: var(--accent);
}

.section-lead {
  max-width: 640px;
  margin: -4px 0 0;
  color: var(--sub);
  font-size: 17px;
  font-weight: 600;
}

.hero h2 {
  max-width: 760px;
  font-size: 118px;
  line-height: 0.95;
  margin: 0 0 22px;
  letter-spacing: 0;
  background: linear-gradient(135deg, #f5ffe8 0%, var(--accent-2) 58%, var(--accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: 3px 3px 0 rgba(0, 0, 0, 0.32), 0 8px 24px color-mix(in srgb, var(--accent-2) 28%, transparent);
}

.hero p {
  max-width: 680px;
  font-size: 18px;
  font-weight: 600;
  color: rgba(245, 255, 232, 0.84);
  margin-bottom: 0;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.tag-list span {
  border: 1px solid var(--border);
  background: var(--card);
  border-radius: 6px;
  font-weight: 800;
}

.profile-list {
  margin: 18px 0 0;
  padding-left: 18px;
  color: var(--sub);
}

.profile-list li {
  margin-bottom: 6px;
}

.hero-visual {
  margin: 0;
  position: relative;
  justify-self: center;
  width: min(100%, 420px);
}

.hero-visual::before {
  content: "";
  position: absolute;
  inset: 7% 3% 5%;
  z-index: -1;
  border: 3px solid var(--border);
  border-radius: 10px;
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--scene-main) 16%, transparent) 50%, transparent 50%),
    linear-gradient(color-mix(in srgb, var(--accent) 12%, transparent) 50%, transparent 50%);
  background-size: 18px 18px;
  box-shadow: var(--shadow-soft), 0 0 0 10px color-mix(in srgb, var(--card) 36%, transparent);
}

.hero-visual img {
  width: 100%;
  display: block;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  filter: drop-shadow(0 28px 34px rgba(37, 99, 235, 0.2));
}

html[data-theme="dark"] .hero-visual img {
  box-shadow: none;
  filter: drop-shadow(0 24px 28px rgba(0, 0, 0, 0.32));
}

/* Skills */
.skill-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
}

.principle-list {
  grid-template-columns: 1fr;
}

.skill-card {
  border: 1px solid var(--border);
  background: var(--card);
  padding: 22px;
  border-radius: 8px;
  box-shadow: var(--pixel-shadow), 0 12px 28px rgba(37, 99, 235, 0.08);
  opacity: 0;
  transform: translateY(24px);
}

.skill-card:nth-child(3n + 1) {
  border-top: 4px solid var(--scene-main);
}

.skill-card:nth-child(3n + 2) {
  border-top: 4px solid var(--accent-2);
}

.skill-card:nth-child(3n) {
  border-top: 4px solid var(--accent);
}

.skill-card.in-view {
  animation: slideUpFade 0.6s ease-out forwards;
}

.hero-visual {
  opacity: 0;
  transform: translateY(24px);
}

.hero-visual.in-view {
  animation: slideUpFade 0.6s ease-out forwards;
}

.skill-card h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 8px;
  font-size: 19px;
  font-weight: 900;
  color: var(--text);
}

.skill-icon {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 6px;
  color: var(--scene-main);
  background: color-mix(in srgb, var(--scene-main) 12%, var(--card));
  box-shadow: 0 8px 18px rgba(37, 99, 235, 0.1);
}

.skill-icon svg {
  width: 19px;
  height: 19px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.skill-card-mobile .skill-icon,
.skill-card-infra .skill-icon {
  color: var(--accent-2);
  background: color-mix(in srgb, var(--accent-2) 14%, var(--card));
}

.skill-card-backend .skill-icon,
.skill-card-tool .skill-icon,
.skill-card-engineering .skill-icon {
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 14%, var(--card));
}

.skill-card-practical .skill-icon,
.skill-card-cert-security .skill-icon {
  color: var(--accent-2);
  background: color-mix(in srgb, var(--accent-2) 14%, var(--card));
}

.skill-card-maintainable .skill-icon,
.skill-card-cert-electric .skill-icon {
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 14%, var(--card));
}

.skill-card-hobby-diy .skill-icon,
.skill-card-hobby-game .skill-icon {
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 14%, var(--card));
}

.skill-card-hobby-travel .skill-icon,
.skill-card-hobby-manga .skill-icon {
  color: var(--accent-2);
  background: color-mix(in srgb, var(--accent-2) 14%, var(--card));
}

.skill-card p {
  margin: 0;
  color: var(--sub);
}

.skill-tag-list {
  margin-top: 12px;
}

/* Cards */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 28px;
  margin-top: 20px;
  box-shadow: var(--shadow-soft);
  transition: all 0.25s ease;
  opacity: 0;
  transform: translateY(30px);
}

.card,
.skill-card,
.link-item {
  position: relative;
}

.card::after,
.skill-card::after,
.link-item::after {
  content: "";
  position: absolute;
  inset: 8px;
  pointer-events: none;
  border: 1px solid color-mix(in srgb, var(--accent) 22%, transparent);
  border-radius: 4px;
}

.card.in-view {
  animation: slideUpFade 0.6s ease-out forwards;
}

.card:nth-child(2) {
  animation-delay: 0.1s;
}

.card:nth-child(3) {
  animation-delay: 0.2s;
}

.card:nth-child(4) {
  animation-delay: 0.3s;
}

.card:hover {
  transform: translateY(-4px);
  border-color: color-mix(in srgb, var(--scene-main) 34%, var(--border));
  box-shadow: 0 8px 0 color-mix(in srgb, var(--scene-main) 30%, transparent), 0 22px 46px rgba(37, 99, 235, 0.16);
}

.card h3 {
  margin-top: 0;
  font-size: 26px;
  font-weight: 900;
  color: var(--text);
  position: relative;
}

.card h3::before {
  content: "◆";
  display: inline-block;
  width: auto;
  height: auto;
  margin-right: 8px;
  background: none;
  box-shadow: none;
  color: var(--accent);
  vertical-align: 0.1em;
}

.card p {
  font-weight: 600;
  color: var(--sub);
  margin-bottom: 0;
}

.work-summary {
  display: grid;
  gap: 10px;
  margin: 18px 0 0;
}

.work-summary div {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 12px;
  border: 1px solid color-mix(in srgb, var(--border) 72%, transparent);
  border-radius: 8px;
  background: color-mix(in srgb, var(--card) 78%, var(--bg));
  box-shadow: inset 4px 0 0 color-mix(in srgb, var(--scene-main) 44%, transparent);
}

.work-summary dt {
  color: var(--scene-main);
  font-size: 13px;
  font-weight: 900;
  line-height: 1.5;
}

.work-summary dd {
  margin: 0;
  color: var(--sub);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.6;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.tag-list span {
  padding: 8px 12px;
  color: var(--text);
  background: color-mix(in srgb, var(--card) 82%, var(--accent-soft));
  border-radius: 6px;
  font-size: 13px;
  line-height: 1.35;
}

.card-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 18px;
}

.card-links a,
.card-detail {
  color: var(--scene-main);
  text-decoration: none;
  font-weight: 900;
  border-radius: 6px;
  padding: 2px 0;
}

.card-detail {
  appearance: none;
  border: 0;
  background: transparent;
  cursor: pointer;
  font: inherit;
}

.card-links a:hover,
.card-detail:hover {
  text-decoration: underline;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 900;
  line-height: 1.35;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--scene-main), var(--accent-2));
  color: #07130b;
  border: 2px solid color-mix(in srgb, var(--text) 18%, transparent);
  box-shadow: 0 5px 0 color-mix(in srgb, var(--text) 28%, transparent), 0 12px 28px rgba(37, 99, 235, 0.18);
}

.btn-ghost {
  background: var(--card);
  color: var(--text);
  border: 2px solid var(--border);
  box-shadow: 0 5px 0 color-mix(in srgb, var(--scene-main) 18%, transparent);
}

.btn:hover {
  transform: translateY(-2px);
}

.contact-actions {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-top: 12px;
}

.link-actions {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.link-actions .btn {
  min-height: 52px;
}

.link-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 24px;
}

.link-item {
  display: grid;
  gap: 6px;
  min-height: 132px;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--card);
  box-shadow: 0 12px 28px rgba(37, 99, 235, 0.08);
}

.link-item__label {
  width: fit-content;
  padding: 4px 8px;
  border-radius: 4px;
  color: var(--scene-main);
  background: color-mix(in srgb, var(--scene-main) 10%, transparent);
  font-size: 12px;
  font-weight: 900;
  line-height: 1.4;
}

.link-item strong {
  color: var(--text);
  font-size: 18px;
  line-height: 1.45;
}

.link-item a,
.link-item > span:last-child {
  align-self: end;
  color: var(--scene-main);
  font-weight: 900;
  text-decoration: none;
}

.link-item a:hover {
  text-decoration: underline;
}

.link-item.is-muted {
  opacity: 0.72;
}

html[data-theme="dark"] .tag-list span {
  background: rgba(15, 23, 42, 0.45);
}

/* Contact Section */
#contact a:not(.btn) {
  color: var(--scene-main);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.3s;
}

#contact a:not(.btn):hover {
  color: var(--scene-main);
  text-decoration: underline;
}

/* Footer */
footer {
  text-align: center;
  padding: 32px;
  color: var(--sub);
  border-top: 1px solid var(--border);
  background: color-mix(in srgb, var(--card) 42%, transparent);
}

/* Modal styles for card details */
.no-scroll {
  overflow: hidden;
}

.intro-splash {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  overflow: hidden;
  background:
    linear-gradient(color-mix(in srgb, var(--scene-main) 13%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, var(--accent-2) 12%, transparent) 1px, transparent 1px),
    linear-gradient(118deg, var(--shine) 0 12%, transparent 12% 42%, var(--warm-band) 42% 48%, transparent 48%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-strong) 48%, var(--bg-end) 100%);
  background-size: 24px 24px, 24px 24px, auto, auto;
  animation: introSplashOut 1.6s cubic-bezier(.77, 0, .18, 1) forwards;
}

.intro-splash::before {
  content: "";
  position: absolute;
  inset: 18%;
  border: 1px solid color-mix(in srgb, var(--scene-main) 12%, transparent);
  border-radius: 10px;
  transform: rotate(-1deg);
}

.intro-splash__inner {
  position: relative;
  padding: 0 6%;
  text-align: center;
}

.intro-splash__inner::after {
  content: "";
  display: block;
  width: 52px;
  height: 52px;
  margin: 24px auto 0;
  border: 6px solid color-mix(in srgb, var(--scene-main) 14%, var(--card));
  border-top-color: var(--accent);
  border-right-color: var(--accent-2);
  border-radius: 6px;
  box-shadow: 0 12px 28px rgba(37, 99, 235, 0.12);
  animation: loadingRing 1s linear infinite;
}

.intro-splash__inner::before {
  content: none;
}

.intro-splash__title {
  margin: 0;
  font-size: clamp(34px, 7vw, 72px);
  font-weight: 900;
  line-height: 1.1;
  color: var(--text);
  text-shadow: var(--pixel-shadow), 0 14px 32px rgba(37, 99, 235, 0.12);
  animation: introTitleIn 1.45s cubic-bezier(.2, .9, .2, 1) forwards;
}

.intro-splash.is-hidden {
  display: none;
}

html[data-intro-seen="true"] .intro-splash {
  display: none;
}

.return-toast {
  position: fixed;
  right: 24px;
  bottom: 76px;
  z-index: 50;
  max-width: min(280px, calc(100vw - 32px));
  padding: 12px 16px;
  border: 2px solid var(--border);
  border-radius: 6px;
  background: var(--card);
  color: var(--text);
  box-shadow: var(--pixel-shadow), 0 18px 36px rgba(24, 33, 23, 0.14);
  font-size: 13px;
  font-weight: 900;
  line-height: 1.4;
  letter-spacing: 0;
  animation: slideUpFade 0.32s ease-out forwards;
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.return-toast::before {
  content: "◆";
  margin-right: 8px;
  color: var(--accent);
}

.return-toast.is-hidden {
  opacity: 0;
  transform: translateY(8px);
}

.modal {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 60;
}
.modal[aria-hidden="false"] {
  display: flex;
}

.modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(2,6,23,0.48);
  backdrop-filter: blur(4px);
  opacity: 0;
  transition: opacity 200ms ease;
}
.modal[aria-hidden="false"] .modal-overlay {
  opacity: 1;
}

.modal-dialog {
  position: relative;
  width: min(720px, 94%);
  max-height: 86vh;
  background: var(--card);
  border: 2px solid var(--border);
  border-radius: 8px;
  padding: 18px;
  box-shadow: 0 24px 48px rgba(2,6,23,0.24);
  transform: translateY(8px) scale(0.995);
  opacity: 0;
  transition: transform 260ms cubic-bezier(.2,.9,.2,1), opacity 180ms ease;
  overflow: auto;
}
.modal[aria-hidden="false"] .modal-dialog {
  transform: translateY(0) scale(1);
  opacity: 1;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}
.modal-header h3 {
  margin: 0;
  font-size: 20px;
  color: var(--scene-main);
}
.modal-close {
  border: none;
  background: transparent;
  font-size: 18px;
  padding: 6px 8px;
  cursor: pointer;
}
.modal-body {
  color: var(--sub);
  line-height: 1.6;
}

.modal-lead {
  margin: 0 0 16px;
  color: var(--text);
  font-weight: 700;
}

.modal-detail-grid {
  display: grid;
  gap: 12px;
}

.modal-detail-block {
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: color-mix(in srgb, var(--card) 80%, var(--bg));
}

.modal-detail-block h4 {
  margin: 0 0 8px;
  color: var(--scene-main);
  font-size: 14px;
  font-weight: 900;
}

.modal-detail-block p,
.modal-detail-block ul {
  margin: 0;
}

.modal-detail-block ul {
  padding-left: 20px;
}

.modal-detail-block li {
  margin: 4px 0;
}

.modal-tags {
  margin: 16px 0 0;
  color: var(--sub);
  font-size: 14px;
}

@media (max-width: 600px) {
  .modal-dialog {
    width: min(94%, 420px);
    padding: 14px;
  }

  .modal-detail-block {
    padding: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

@media (max-width: 1100px) {
  .hero h2 {
    font-size: 88px;
  }

  .hero .hero-stage {
    font-size: 118px;
  }
}

/* Tablet Responsive (768px and below) */
@media (max-width: 768px) {
  header {
    padding: 12px 6%;
    grid-template-columns: minmax(120px, 1fr) auto minmax(120px, 1fr);
    column-gap: 12px;
  }

  header h1 {
    font-size: 20px;
  }

  section {
    padding: 60px 6%;
  }

  section h2 {
    font-size: 28px;
  }

  .hero {
    grid-template-columns: 1fr;
    gap: 26px;
    padding: 54px 6% 78px;
  }

  .hero::after {
    right: -48px;
    top: 34%;
    width: 220px;
  }

  .hero .hero-stage {
    font-size: 92px;
  }

  .hero h2 {
    max-width: 620px;
    font-size: 74px;
  }

  .hero-visual {
    max-width: 360px;
    margin-inline: auto;
  }

  .skill-grid {
    grid-template-columns: 1fr;
  }

  .card {
    padding: 24px;
  }

  .link-actions {
    grid-template-columns: 1fr;
  }

  .link-list {
    grid-template-columns: 1fr;
  }

  .card h3 {
    font-size: 22px;
  }
}

/* Mobile Responsive (600px and below) */
@media (max-width: 600px) {
  header {
    padding: 12px 5%;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
  }

  header h1 {
    flex: 1 1 auto;
    min-width: 0;
    font-size: 18px;
    order: 1;
  }

  header h1 a {
    display: inline-block;
    max-width: 100%;
    overflow-wrap: anywhere;
  }

  .menu-toggle {
    display: flex;
    order: 2;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--card);
  }

  .header-actions {
    order: 2;
    width: auto;
    margin-left: auto;
    justify-content: flex-end;
  }

  .theme-toggle {
    width: 42px;
    height: 42px;
    margin: 0;
  }

  nav {
    display: none;
    flex-direction: column;
    gap: 8px;
    width: 100%;
    order: 3;
    padding: 12px 0 4px;
    border-top: 1px solid var(--border);
    margin-top: 2px;
  }

  nav.active {
    display: flex;
  }

  nav a {
    width: 100%;
    font-size: 16px;
    padding: 10px 12px;
    border-radius: 8px;
  }

  section {
    padding: 56px 5%;
  }

  section h2 {
    font-size: 24px;
  }

  .content h3 {
    margin-top: 42px;
    font-size: 21px;
  }

  .about-story {
    gap: 12px;
    margin-top: 18px;
  }

  .about-story p {
    font-size: 15px;
  }

  .hero {
    min-height: auto;
    padding-top: 48px;
    padding-bottom: 66px;
  }

  .hero::after {
    width: 170px;
    opacity: 0.7;
  }

  .hero .hero-stage {
    left: 5%;
    right: 5%;
    bottom: 12px;
    font-size: 50px;
  }

  .hero h2 {
    font-size: 50px;
    line-height: 1;
  }

  .hero p {
    font-size: 16px;
  }

  .hero-actions {
    gap: 10px;
    margin-top: 20px;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .hero-visual {
    max-width: min(320px, 88vw);
  }

  .card {
    padding: 18px;
    margin-top: 16px;
  }

  .contact-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .contact-actions .btn,
  .link-actions .btn {
    width: 100%;
  }

  .card h3 {
    font-size: 20px;
    line-height: 1.35;
  }

  .card p {
    font-size: 14px;
  }

  .work-summary {
    gap: 8px;
    margin-top: 14px;
  }

  .work-summary div {
    grid-template-columns: 1fr;
    gap: 4px;
    padding: 10px;
  }

  .work-summary dt {
    font-size: 12px;
  }

  .work-summary dd {
    font-size: 13px;
  }

  .section-lead {
    font-size: 15px;
  }

  .tag-list {
    gap: 8px;
  }

  .tag-list span {
    padding: 7px 10px;
    font-size: 12px;
  }

  .card-links {
    display: grid;
    grid-template-columns: 1fr;
    gap: 8px;
    margin-top: 16px;
  }

  .card-links a,
  .card-detail {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 9px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: color-mix(in srgb, var(--card) 86%, var(--bg));
    line-height: 1.35;
  }

  .card-links a:first-child {
    color: white;
    border-color: transparent;
    background: linear-gradient(135deg, var(--scene-main), var(--accent-2));
  }

  .card:hover {
    transform: none;
  }

  .scene-indicator {
    display: none;
  }

  .card.in-view {
    animation: slideUpFade 0.52s ease-out forwards;
    animation-delay: 0ms !important;
  }
}