:root {
  --color-bg: #0A1128;
  --color-bg-deep: #050812;
  --color-surface: #1B3A4B;
  --color-glass: rgba(255, 255, 255, 0.06);
  --color-orange: #FF4D00;
  --color-amber: #FF9A00;
  --color-neon: #39FF14;
  --color-mist: #AEB8C2;
  --color-white: #F5F7FA;
  --color-line: rgba(174, 184, 194, 0.18);
  --color-line-strong: rgba(245, 247, 250, 0.28);
  --font-display: "Bahnschrift", "DIN Alternate", "Arial Black", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SFMono-Regular", "Cascadia Mono", "Roboto Mono", Consolas, monospace;
  --container: 1440px;
  --container-narrow: 960px;
  --radius: 4px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 12% -10%, rgba(255, 77, 0, 0.16), transparent 34rem),
    linear-gradient(135deg, #0A1128 0%, #071120 100%);
  color: var(--color-white);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

main {
  display: block;
}

#main-content {
  outline: none;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: var(--color-white);
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

ul,
ol {
  margin: 0;
  padding: 0;
}

[hidden] {
  display: none !important;
}

::selection {
  background: var(--color-orange);
  color: #fff;
}

:focus-visible {
  outline: 3px solid var(--color-neon);
  outline-offset: 3px;
  border-radius: 2px;
}

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 1000;
  padding: 12px 18px;
  background: var(--color-neon);
  color: #06120A;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.875rem;
  text-decoration: none;
  border-radius: 2px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
  transform: translateY(-240%);
  transition: transform 0.3s ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(10, 17, 40, 0.88);
  border-bottom: 1px solid var(--color-line);
  backdrop-filter: blur(18px) saturate(130%);
  -webkit-backdrop-filter: blur(18px) saturate(130%);
}

.site-header__inner {
  position: relative;
  max-width: var(--container);
  margin-inline: auto;
  padding: 1rem 24px 0.75rem;
}

.site-masthead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--color-white);
  text-decoration: none;
}

.site-brand:hover {
  color: var(--color-white);
}

.site-brand__mark {
  display: grid;
  grid-template-columns: repeat(3, 5px);
  align-items: end;
  gap: 2px;
  width: 22px;
  height: 28px;
  padding: 2px 0;
  transform: skewX(-12deg);
}

.site-brand__mark-line {
  display: block;
  width: 5px;
  height: 10px;
  border-radius: 1px;
  background: var(--color-orange);
}

.site-brand__mark-line:nth-child(2) {
  height: 17px;
  background: var(--color-amber);
}

.site-brand__mark-line:nth-child(3) {
  height: 26px;
  background: var(--color-neon);
}

.site-brand__text strong {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.125rem, 2vw, 1.55rem);
  font-weight: 900;
  line-height: 1;
  letter-spacing: 0.02em;
  transform: skewX(-4deg);
}

.site-brand__text small {
  display: block;
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.34em;
  line-height: 1;
  color: var(--color-neon);
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 8px 12px;
  border: 1px solid var(--color-line);
  border-radius: 2px;
  color: var(--color-white);
  transition: border-color 0.3s ease, background 0.3s ease;
}

.nav-toggle:hover {
  border-color: var(--color-orange);
  background: rgba(255, 77, 0, 0.08);
}

.nav-toggle__box {
  position: relative;
  display: block;
  width: 24px;
  height: 16px;
}

.nav-toggle__box span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: currentColor;
  transform-origin: center;
  transition: transform 0.3s ease, top 0.3s ease, opacity 0.3s ease;
}

.nav-toggle__box span:nth-child(1) {
  top: 0;
}

.nav-toggle__box span:nth-child(2) {
  top: 7px;
}

.nav-toggle__box span:nth-child(3) {
  top: 14px;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__box span:nth-child(1) {
  top: 7px;
  transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__box span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__box span:nth-child(3) {
  top: 7px;
  transform: rotate(-45deg);
}

.nav-toggle__label {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.site-nav {
  isolation: isolate;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 4px;
  margin-top: 14px;
  padding: 4px 0;
}

.site-nav a {
  position: relative;
  z-index: 0;
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 10px 16px;
  color: var(--color-mist);
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  line-height: 1;
  white-space: nowrap;
  text-decoration: none;
  transition: color 0.3s ease, transform 0.3s ease;
}

.site-nav a::before {
  content: "";
  position: absolute;
  top: 50%;
  bottom: 50%;
  left: 0;
  right: 0;
  z-index: -1;
  background: linear-gradient(135deg, rgba(255, 77, 0, 0.92), rgba(255, 154, 0, 0.65));
  transform: skewX(-10deg);
  opacity: 0;
  transition: top 0.3s ease, bottom 0.3s ease, opacity 0.3s ease;
}

.site-nav a:hover {
  color: var(--color-white);
  transform: skewX(-5deg);
}

.site-nav a:hover::before {
  top: 0;
  bottom: 0;
  opacity: 0.16;
}

.site-nav a[aria-current="page"] {
  color: var(--color-white);
}

.site-nav a[aria-current="page"]::before {
  top: 0;
  bottom: 0;
  opacity: 1;
}

.site-header__progress {
  position: absolute;
  bottom: -1px;
  left: 0;
  z-index: 3;
  width: 100%;
  height: 3px;
  pointer-events: none;
  background: linear-gradient(90deg, var(--color-orange), var(--color-amber), var(--color-neon));
  transform: scaleX(0);
  transform-origin: 0 50%;
}

.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 44px;
  padding: 0.75rem 1.25rem;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  line-height: 1;
  color: var(--color-white);
  text-decoration: none;
  border: 0;
  border-radius: 2px;
  cursor: pointer;
  transition: transform 0.3s cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 0.3s ease, background 0.3s ease, border-color 0.3s ease;
}

.btn > span {
  display: inline-block;
}

.btn--accent {
  background: linear-gradient(135deg, var(--color-orange), var(--color-amber));
  color: #fff;
  box-shadow: 0 8px 24px rgba(255, 77, 0, 0.28);
}

.btn--accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 0 3px rgba(57, 255, 20, 0.12), 0 12px 32px rgba(255, 77, 0, 0.38);
}

.btn--ghost {
  border: 1px solid var(--color-line-strong);
  background: rgba(245, 247, 250, 0.02);
  color: var(--color-white);
}

.btn--ghost:hover {
  border-color: var(--color-neon);
  background: rgba(57, 255, 20, 0.06);
  transform: translateY(-2px);
}

.btn--skew {
  transform: skewX(-6deg);
}

.btn--skew > span {
  transform: skewX(6deg);
}

.btn--skew:hover {
  transform: skewX(-6deg) translateY(-2px);
}

.page-main {
  display: block;
  width: 100%;
  min-height: 68vh;
}

.container,
.page-shell {
  width: min(var(--container), calc(100% - 48px));
  margin-inline: auto;
}

.container--narrow {
  width: min(var(--container-narrow), calc(100% - 48px));
  margin-inline: auto;
}

.section {
  padding-block: clamp(3rem, 7vw, 6.5rem);
  position: relative;
}

.section--tight {
  padding-block: clamp(2rem, 4vw, 4rem);
}

.section__label {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.2em;
  color: var(--color-neon);
}

.section__label::before {
  content: "";
  width: 28px;
  height: 3px;
  background: var(--color-orange);
  transform: skewX(-20deg);
}

.section__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.5vw, 4rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.02em;
  transform: skewX(-3deg);
}

.grid {
  display: grid;
  gap: clamp(1rem, 2.4vw, 2rem);
}

.grid--split {
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
}

.grid--3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

@media (max-width: 900px) {
  .grid--3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  .grid--3 {
    grid-template-columns: 1fr;
  }
}

.card {
  position: relative;
  padding: clamp(1.25rem, 3vw, 2rem);
  background: var(--color-glass);
  border: 1px solid var(--color-line);
  border-radius: 2px;
  backdrop-filter: blur(10px);
  overflow: hidden;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 56px;
  height: 3px;
  background: var(--color-orange);
  transform: skewX(-24deg);
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(57, 255, 20, 0.55);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
}

.diagonal-cut {
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
}

.image-frame {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--color-surface), var(--color-bg-deep));
  isolation: isolate;
}

.image-frame::before {
  content: "";
  display: block;
  padding-top: var(--img-ratio, 62.5%);
}

.image-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(135deg, rgba(255, 77, 0, 0.2), transparent 45%);
  mix-blend-mode: screen;
}

.image-frame img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.image-frame--wide {
  --img-ratio: 50%;
}

.image-frame--portrait {
  --img-ratio: 120%;
}

.image-frame--square {
  --img-ratio: 100%;
}

.breadcrumb {
  margin: 0 0 2rem;
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.breadcrumb li {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.875rem;
  color: var(--color-mist);
}

.breadcrumb li + li::before {
  content: "/";
  color: var(--color-orange);
  font-weight: 800;
}

.breadcrumb a {
  color: var(--color-mist);
  text-decoration: none;
}

.breadcrumb a:hover {
  color: var(--color-white);
}

.prose {
  max-width: 72ch;
}

.prose p {
  margin: 0 0 1.2em;
  color: var(--color-mist);
}

.prose h2,
.prose h3 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.15;
  color: var(--color-white);
}

.prose a {
  color: var(--color-amber);
}

.site-footer {
  position: relative;
  margin-top: clamp(4rem, 8vw, 7rem);
  background:
    radial-gradient(circle at 8% 0%, rgba(255, 77, 0, 0.12), transparent 30rem),
    linear-gradient(140deg, #050812 0%, #08111f 70%);
  color: var(--color-mist);
}

.site-footer::before {
  content: "";
  display: block;
  height: 3px;
  background: linear-gradient(90deg, var(--color-orange), var(--color-amber) 38%, var(--color-neon));
}

.site-footer__top {
  max-width: var(--container);
  margin-inline: auto;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1.7fr);
  gap: clamp(2rem, 5vw, 5rem);
  padding: clamp(2.5rem, 6vw, 4.5rem) 24px 2.5rem;
}

.site-footer__brand .site-brand__text strong {
  font-size: 1.75rem;
}

.site-footer__claim {
  margin: 1.5rem 0 0.5rem;
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 2.4vw, 2rem);
  font-weight: 900;
  line-height: 1.05;
  color: var(--color-white);
  letter-spacing: -0.01em;
  transform: skewX(-3deg);
}

.site-footer__trust {
  position: relative;
  max-width: 44ch;
  margin: 0;
  padding-left: 1rem;
  color: var(--color-mist);
}

.site-footer__trust::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--color-neon);
}

.site-footer__reach {
  margin: 1.25rem 0 0.25rem;
  font-style: normal;
  line-height: 1.8;
}

.site-footer__contact {
  color: var(--color-white);
  font-weight: 700;
}

.site-footer__phone {
  color: var(--color-white);
  font-family: var(--font-mono);
}

.site-footer__address {
  margin: 0;
  font-size: 0.875rem;
  color: var(--color-mist);
}

.site-footer__columns {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 2rem;
}

.site-footer__nav {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.55rem;
}

.site-footer__nav a,
.site-footer__nav span {
  color: var(--color-mist);
  text-decoration: none;
  font-size: 0.95rem;
}

.site-footer__nav span {
  color: var(--color-neon);
  font-size: 0.825rem;
  font-family: var(--font-mono);
}

.site-footer__nav a:hover {
  color: var(--color-white);
}

.site-footer__heading {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-white);
}

.site-footer__note {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  gap: 1rem;
  padding: 1.25rem;
  background: var(--color-glass);
  border-left: 3px solid var(--color-orange);
  border-radius: 2px;
}

.site-footer__note p {
  margin: 0;
  color: var(--color-mist);
  font-size: 0.875rem;
  line-height: 1.7;
}

.site-footer__bottom {
  max-width: var(--container);
  margin-inline: auto;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 2rem;
  justify-content: space-between;
  padding: 1.25rem 24px 2rem;
  border-top: 1px solid rgba(57, 255, 20, 0.18);
  font-size: 0.875rem;
  color: var(--color-mist);
}

.site-footer__bottom p {
  margin: 0;
}

.site-footer__icp {
  color: var(--color-white);
  font-family: var(--font-mono);
}

@media (max-width: 1120px) {
  .site-footer__top {
    grid-template-columns: 1fr;
  }

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

  .site-footer__note {
    grid-column: 1 / -1;
  }
}

@media (max-width: 767px) {
  .site-header__inner {
    padding: 0.75rem 16px 0.75rem;
  }

  .site-header__actions {
    gap: 8px;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-masthead {
    gap: 0.75rem;
  }

  .site-brand__text small {
    letter-spacing: 0.22em;
  }

  .site-nav {
    position: absolute;
    top: calc(100% - 1px);
    left: 12px;
    right: 12px;
    z-index: 40;
    display: grid;
    gap: 0.25rem;
    margin: 0;
    padding: 1rem;
    background: rgba(10, 17, 40, 0.96);
    border: 1px solid var(--color-line);
    border-top: 2px solid var(--color-neon);
    border-radius: 0 0 var(--radius) var(--radius);
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    pointer-events: none;
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease;
  }

  .site-nav[data-open] {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
  }

  .site-nav a {
    width: 100%;
    justify-content: flex-start;
    padding: 14px 12px;
    border-bottom: 1px solid rgba(245, 247, 250, 0.05);
  }

  .site-nav a[aria-current="page"]::before {
    left: -4px;
    right: -4px;
  }

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

  .site-footer__top {
    grid-template-columns: 1fr;
    padding: 2.5rem 16px 1.5rem;
  }

  .site-footer__columns {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .site-footer__note {
    grid-column: auto;
  }

  .site-footer__bottom {
    padding: 1.25rem 16px 2rem;
    justify-content: center;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .site-brand__mark {
    width: 18px;
  }

  .site-brand__text strong {
    font-size: 1rem;
  }

  .site-brand__text small {
    font-size: 0.5rem;
    letter-spacing: 0.16em;
  }

  .btn {
    min-height: 40px;
    padding: 0.6rem 0.85rem;
    font-size: 0.75rem;
  }

  .nav-toggle__label {
    display: none;
  }

  .nav-toggle {
    padding: 8px 10px;
  }
}

@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;
  }
}