:root {
  color-scheme: light;
  --bg: #eef4f1;
  --surface: rgba(255, 255, 255, 0.88);
  --surface-strong: #dfe9e6;
  --surface-panel: rgba(255, 255, 255, 0.72);
  --text: #101816;
  --muted: #53615f;
  --line: rgba(22, 58, 54, 0.16);
  --coral: #c63e35;
  --teal: #009c8a;
  --blue: #2764c8;
  --amber: #b97800;
  --green: #00a86b;
  --shadow: 0 20px 60px rgba(24, 42, 39, 0.14);
  --glow: 0 0 34px rgba(0, 156, 138, 0.22);
  --radius: 8px;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

body.dark {
  color-scheme: dark;
  --bg: #050807;
  --surface: rgba(10, 20, 18, 0.88);
  --surface-strong: #07110f;
  --surface-panel: rgba(12, 30, 27, 0.72);
  --text: #ecfff9;
  --muted: #91aaa3;
  --line: rgba(79, 255, 215, 0.18);
  --coral: #ff5c4d;
  --teal: #23f0d1;
  --blue: #6aa7ff;
  --amber: #f3b83e;
  --green: #46f58a;
  --shadow: 0 28px 70px rgba(0, 0, 0, 0.42);
  --glow: 0 0 46px rgba(35, 240, 209, 0.26);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  position: relative;
  margin: 0;
  min-width: 320px;
  background:
    linear-gradient(rgba(35, 240, 209, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(35, 240, 209, 0.045) 1px, transparent 1px),
    linear-gradient(115deg, transparent 0 58%, rgba(198, 62, 53, 0.1) 58% 63%, transparent 63%),
    linear-gradient(135deg, var(--bg), color-mix(in srgb, var(--bg) 82%, #123a34));
  background-size:
    42px 42px,
    42px 42px,
    auto,
    auto;
  color: var(--text);
  letter-spacing: 0;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: 0;
  background:
    linear-gradient(90deg, transparent 0 49%, rgba(35, 240, 209, 0.06) 50%, transparent 51%),
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.025) 0 1px, transparent 1px 5px);
  content: "";
  opacity: 0.7;
  pointer-events: none;
}

body > * {
  position: relative;
  z-index: 1;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
textarea {
  font: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: grid;
  grid-template-columns: minmax(230px, auto) minmax(0, 1fr) auto;
  align-items: center;
  gap: 18px;
  padding: 12px 28px;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  box-shadow: 0 1px 0 rgba(35, 240, 209, 0.08);
  backdrop-filter: blur(22px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  font-weight: 900;
}

.brand-logo {
  display: block;
  width: 52px;
  height: 52px;
  aspect-ratio: 1;
  border: 1px solid var(--teal);
  border-radius: var(--radius);
  background: #ffffff;
  box-shadow: var(--glow);
  object-fit: contain;
}

.brand-name {
  max-width: 21em;
  line-height: 1.2;
  white-space: normal;
}

.site-nav {
  justify-self: center;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px;
}

.site-nav a {
  border: 1px solid transparent;
  border-radius: var(--radius);
  padding: 8px 11px;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 800;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  border-color: var(--line);
  background: color-mix(in srgb, var(--teal) 13%, transparent);
  color: var(--text);
  outline: none;
}

.theme-toggle {
  position: relative;
  width: 48px;
  height: 30px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface-panel);
  box-shadow: inset 0 0 18px rgba(35, 240, 209, 0.14);
  cursor: pointer;
}

.toggle-icon {
  position: absolute;
  top: 5px;
  left: 5px;
  width: 18px;
  height: 18px;
  border: 1px solid color-mix(in srgb, var(--amber) 70%, white);
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 18px color-mix(in srgb, var(--amber) 60%, transparent);
  transition:
    transform 180ms ease,
    background 180ms ease,
    border-color 180ms ease;
}

body.dark .toggle-icon {
  transform: translateX(18px);
  border-color: var(--teal);
  background: var(--teal);
}

.hero {
  position: relative;
  min-height: 700px;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

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

.hero::after {
  position: absolute;
  inset: auto 0 0;
  height: 36%;
  background: linear-gradient(to bottom, transparent, var(--bg));
  content: "";
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 370px;
  align-items: end;
  gap: 44px;
  width: min(1180px, calc(100% - 48px));
  min-height: 700px;
  margin: 0 auto;
  padding: 92px 0 76px;
}

.hero-copy {
  max-width: 760px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  color: var(--teal);
  font-size: 0.78rem;
  font-weight: 900;
  text-transform: uppercase;
}

.eyebrow::before {
  display: inline-block;
  width: 28px;
  height: 2px;
  background: var(--coral);
  content: "";
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1 {
  max-width: 13ch;
  margin: 0;
  font-size: 4.65rem;
  line-height: 0.98;
  text-shadow: 0 0 34px color-mix(in srgb, var(--teal) 20%, transparent);
}

h2 {
  margin: 0;
  font-size: 2.32rem;
  line-height: 1.1;
}

h3 {
  margin: 0;
  font-size: 1.12rem;
  line-height: 1.25;
}

.hero-text {
  max-width: 680px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 1.13rem;
  line-height: 1.85;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0 18px;
  font-weight: 900;
  transition:
    transform 160ms ease,
    box-shadow 160ms ease,
    background 160ms ease,
    border-color 160ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
  outline: none;
}

.button.primary {
  border-color: var(--teal);
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--teal) 88%, white), var(--green));
  color: #04120f;
  box-shadow: var(--glow);
}

.button.secondary {
  background: var(--surface-panel);
  color: var(--text);
}

.button.secondary:hover,
.button.secondary:focus-visible {
  border-color: var(--teal);
}

.hero-panel {
  position: relative;
  align-self: end;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--teal) 10%, transparent), transparent),
    var(--surface-panel);
  box-shadow: var(--shadow), var(--glow);
  backdrop-filter: blur(20px);
}

.hero-panel::before {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, transparent, rgba(35, 240, 209, 0.14), transparent),
    repeating-linear-gradient(90deg, transparent 0 18px, rgba(35, 240, 209, 0.08) 18px 19px);
  content: "";
  opacity: 0.45;
  pointer-events: none;
}

.hero-panel > * {
  position: relative;
  z-index: 1;
}

.panel-heading p {
  margin: 0 0 6px;
  color: var(--muted);
}

.panel-heading strong {
  color: var(--teal);
  font-size: 1.38rem;
}

.metric-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 28px 0 0;
}

.metric-list div {
  border-top: 2px solid var(--teal);
  padding-top: 12px;
}

.metric-list dt {
  color: var(--muted);
  font-size: 0.82rem;
}

.metric-list dd {
  margin: 4px 0 0;
  color: var(--text);
  font-size: 1.38rem;
  font-weight: 900;
}

.section {
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
  padding: 88px 0;
}

.section-intro {
  max-width: 700px;
  margin-bottom: 34px;
}

.section-intro p:not(.eyebrow),
.contact-copy p {
  color: var(--muted);
  line-height: 1.85;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.project-card,
.rule-card,
.contact-form {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: 0 1px 0 rgba(35, 240, 209, 0.08);
  backdrop-filter: blur(18px);
}

.project-card {
  overflow: hidden;
}

.project-visual {
  position: relative;
  display: grid;
  min-height: 220px;
  margin: 0;
  place-items: end start;
  overflow: hidden;
  padding: 20px;
}

.project-visual::before,
.project-visual::after {
  position: absolute;
  content: "";
}

.project-visual span {
  position: relative;
  z-index: 1;
  border: 1px solid rgba(236, 255, 249, 0.35);
  border-radius: var(--radius);
  padding: 8px 12px;
  background: rgba(5, 8, 7, 0.62);
  color: #ecfff9;
  font-weight: 900;
}

.visual-product {
  background:
    linear-gradient(135deg, rgba(35, 240, 209, 0.44), rgba(39, 100, 200, 0.56)),
    repeating-linear-gradient(90deg, transparent 0 28px, rgba(255, 255, 255, 0.16) 28px 29px),
    #07110f;
}

.visual-product::before {
  right: 24px;
  bottom: 34px;
  width: 170px;
  height: 92px;
  border-left: 2px solid rgba(236, 255, 249, 0.65);
  border-bottom: 2px solid rgba(236, 255, 249, 0.65);
}

.visual-product::after {
  right: 30px;
  bottom: 48px;
  width: 152px;
  height: 62px;
  clip-path: polygon(0 76%, 18% 52%, 33% 61%, 48% 30%, 66% 43%, 82% 12%, 100% 24%, 100% 100%, 0 100%);
  background: linear-gradient(180deg, rgba(70, 245, 138, 0.62), rgba(70, 245, 138, 0.1));
}

.visual-space {
  background:
    linear-gradient(150deg, rgba(255, 92, 77, 0.52), rgba(243, 184, 62, 0.36)),
    repeating-linear-gradient(0deg, transparent 0 24px, rgba(255, 255, 255, 0.16) 24px 25px),
    #11120a;
}

.visual-space::before {
  top: 32px;
  right: 34px;
  width: 132px;
  height: 132px;
  border: 2px solid rgba(236, 255, 249, 0.62);
  transform: rotate(45deg);
}

.visual-space::after {
  right: 46px;
  bottom: 42px;
  width: 150px;
  height: 12px;
  border-radius: 999px;
  background: rgba(236, 255, 249, 0.64);
  box-shadow:
    -14px -34px 0 rgba(35, 240, 209, 0.44),
    18px -68px 0 rgba(255, 92, 77, 0.46);
}

.visual-journal {
  background:
    linear-gradient(135deg, rgba(238, 244, 241, 0.18), rgba(35, 240, 209, 0.22)),
    linear-gradient(90deg, rgba(39, 100, 200, 0.66) 0 24%, transparent 24% 100%),
    #07110f;
}

.visual-journal::before {
  inset: 26px 34px auto auto;
  width: 142px;
  height: 152px;
  border: 1px solid rgba(236, 255, 249, 0.48);
  background:
    linear-gradient(rgba(236, 255, 249, 0.2) 1px, transparent 1px),
    linear-gradient(90deg, rgba(236, 255, 249, 0.18) 1px, transparent 1px);
  background-size: 18px 18px;
  box-shadow: -18px 18px 0 rgba(35, 240, 209, 0.16);
}

.visual-journal::after {
  right: 58px;
  top: 66px;
  width: 82px;
  height: 8px;
  border-radius: 999px;
  background: rgba(236, 255, 249, 0.7);
  box-shadow:
    0 22px 0 rgba(70, 245, 138, 0.54),
    0 44px 0 rgba(255, 92, 77, 0.5);
}

.project-content {
  padding: 22px;
}

.project-type {
  margin: 0 0 8px;
  color: var(--teal);
  font-weight: 900;
}

.project-content p:last-child {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.75;
}

.band,
.events-section {
  width: 100%;
  max-width: none;
  padding-right: max(24px, calc((100% - 1180px) / 2));
  padding-left: max(24px, calc((100% - 1180px) / 2));
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--teal) 8%, transparent), transparent 36%),
    var(--surface-strong);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
}

.service-grid article {
  min-height: 210px;
  padding: 24px;
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--teal) 8%, transparent), transparent),
    var(--surface);
}

.service-grid h3,
.event-card span {
  color: var(--text);
}

.service-grid p,
.process-list p,
.rule-card p,
.event-card p {
  color: var(--muted);
  line-height: 1.75;
}

.schema-flow {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.schema-flow strong {
  display: inline-flex;
  min-height: 28px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0 9px;
  background: color-mix(in srgb, var(--teal) 8%, transparent);
  color: var(--teal);
  font-size: 0.83rem;
  font-weight: 900;
  justify-self: start;
}

.schema-flow ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.schema-flow li {
  position: relative;
  display: inline-flex;
  min-height: 28px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0 9px;
  background: color-mix(in srgb, var(--blue) 7%, transparent);
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 900;
}

.schema-flow li:not(:last-child)::after {
  position: absolute;
  right: -17px;
  color: var(--teal);
  content: "→";
}

@media (max-width: 640px) {
  .schema-flow ol {
    display: grid;
    gap: 22px;
  }

  .schema-flow li {
    justify-self: start;
  }

  .schema-flow li:not(:last-child)::after {
    right: auto;
    bottom: -20px;
    left: 12px;
    content: "↓";
  }
}

.rules-section {
  padding-bottom: 72px;
}

.rules-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.rule-card {
  min-height: 220px;
  padding: 24px;
}

.rule-card span {
  display: inline-flex;
  margin-bottom: 34px;
  color: var(--coral);
  font-weight: 900;
}

.official-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.official-links a,
.reference-links a {
  display: inline-flex;
  min-height: 38px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0 14px;
  background: var(--surface-panel);
  color: var(--blue);
  font-size: 0.92rem;
  font-weight: 900;
}

.official-links a:hover,
.official-links a:focus-visible,
.reference-links a:hover,
.reference-links a:focus-visible {
  border-color: var(--teal);
  color: var(--teal);
  outline: none;
}

.reference-links {
  display: grid;
  gap: 10px;
  justify-items: start;
  margin-top: 18px;
}

.link-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.reference-links p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 900;
}

.event-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
}

.event-card {
  min-height: 184px;
  padding: 22px;
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--blue) 9%, transparent), transparent 70%),
    var(--surface);
}

.event-card span {
  display: inline-flex;
  min-height: 34px;
  align-items: center;
  border-bottom: 2px solid var(--coral);
  font-size: 1.04rem;
  font-weight: 900;
}

.event-card p {
  margin-bottom: 0;
}

@media (min-width: 941px) {
  .rules-section .section-intro p:not(.eyebrow),
  .events-section .section-intro p:not(.eyebrow),
  .rule-card p,
  .event-card p {
    text-align: justify;
    text-align-last: left;
    text-justify: inter-ideograph;
  }
}

.process-section {
  padding-bottom: 56px;
}

.process-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.process-list li {
  border-top: 2px solid var(--teal);
  padding-top: 18px;
}

.process-list span {
  color: var(--coral);
  font-weight: 900;
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1fr);
  gap: 44px;
  align-items: start;
  padding-top: 56px;
}

.mail-link {
  display: inline-flex;
  margin-top: 14px;
  color: var(--blue);
  font-weight: 900;
}

.contact-methods {
  display: grid;
  gap: 8px;
  justify-items: start;
}

.contact-methods span {
  color: var(--text);
  font-weight: 900;
}

.contact-methods .mail-link {
  margin-top: 0;
}

.contact-form {
  display: grid;
  gap: 16px;
  padding: 24px;
  box-shadow: var(--shadow);
}

.contact-form label {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-weight: 700;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px 13px;
  background: color-mix(in srgb, var(--bg) 74%, transparent);
  color: var(--text);
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--teal);
  outline: 3px solid color-mix(in srgb, var(--teal) 24%, transparent);
}

.contact-form textarea {
  resize: vertical;
}

.form-status {
  min-height: 24px;
  margin: 0;
  color: var(--green);
  font-weight: 900;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
  padding: 32px 0 44px;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.site-footer p {
  margin: 0;
}

.risk-note {
  max-width: 420px;
  font-size: 0.9rem;
  line-height: 1.6;
}

.site-footer a {
  color: var(--text);
  font-weight: 900;
}

@media (max-width: 1080px) {
  .site-header {
    grid-template-columns: 1fr auto;
    padding: 12px 20px;
  }

  .site-nav {
    grid-column: 1 / -1;
    justify-self: start;
    justify-content: flex-start;
    width: 100%;
    overflow-x: auto;
    padding-bottom: 2px;
  }
}

@media (max-width: 940px) {
  .hero,
  .hero-inner {
    min-height: 760px;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    align-items: center;
    gap: 28px;
    padding-top: 66px;
  }

  h1 {
    max-width: 12ch;
    font-size: 3.6rem;
  }

  .hero-panel {
    width: min(100%, 520px);
  }

  .project-grid,
  .service-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .rules-grid,
  .event-grid,
  .process-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .contact-section {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .brand-name {
    max-width: 16em;
    font-size: 0.95rem;
  }

  .site-nav a {
    padding: 8px 10px;
  }

  .hero,
  .hero-inner {
    min-height: 720px;
  }

  .hero-inner,
  .section,
  .site-footer {
    width: min(100% - 32px, 1180px);
  }

  h1 {
    font-size: 2.72rem;
  }

  h2 {
    font-size: 1.9rem;
  }

  .hero-text {
    font-size: 1rem;
  }

  .metric-list,
  .project-grid,
  .service-grid,
  .rules-grid,
  .event-grid,
  .process-list {
    grid-template-columns: 1fr;
  }

  .service-grid article,
  .event-card {
    min-height: auto;
  }

  .contact-form {
    padding: 18px;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}