/* ===== Reset & Base ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg-deep: #1A1A2E;
  --bg-elevated: #16213E;
  --primary-red: #E63946;
  --primary-blue: #1D3557;
  --accent-green: #2A9D8F;
  --ink: #F1FAEE;
  --muted: #A8DADC;
  --border: #457B9D;
  --data-cyan: #4DD0E1;
  --grid-line: rgba(69, 123, 157, 0.18);
  --font-heading: Impact, Anton, "Arial Black", sans-serif;
  --font-body: "Open Sans", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-data: "Roboto Mono", "SF Mono", "Courier New", monospace;
  --header-h: 76px;
  --container-max: 1280px;
  --radius: 18px;
  --radius-soft: 28px;
  --transition: 180ms cubic-bezier(.4, 0, .2, 1);
  --scroll-progress: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

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

body {
  font-family: var(--font-body);
  font-size: 1.125rem;
  line-height: 1.75;
  color: var(--ink);
  background-color: var(--bg-deep);
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 48px 48px;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image: radial-gradient(ellipse at 78% 12%, rgba(230, 57, 70, 0.10), transparent 55%),
                    radial-gradient(ellipse at 18% 80%, rgba(42, 157, 143, 0.08), transparent 50%);
  pointer-events: none;
  z-index: 0;
}

body::after {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  height: 4px;
  width: calc(var(--scroll-progress) * 100%);
  background: linear-gradient(90deg, var(--primary-red), var(--accent-green));
  z-index: 2000;
  pointer-events: none;
}

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

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

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

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

:focus-visible {
  outline: 3px solid var(--accent-green);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection {
  background: var(--primary-red);
  color: var(--ink);
}

/* ===== Container ===== */
.container {
  width: min(100% - 48px, var(--container-max));
  margin-inline: auto;
}

.container--header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
  gap: 24px;
}

.container--footer {
  padding-top: 72px;
  padding-bottom: 32px;
}

/* ===== Screen Reader ===== */
.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;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 3000;
  background: var(--accent-green);
  color: var(--bg-deep);
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 0.9rem;
  padding: 10px 20px;
  border-radius: 8px;
  transform: translateY(-150%);
  transition: transform var(--transition);
}

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

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(26, 26, 46, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.site-header::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-red) 0%, rgba(230, 57, 70, 0.2) 40%, var(--accent-green) 100%);
  pointer-events: none;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.brand__mark {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-heading);
  font-size: 2rem;
  letter-spacing: 0.02em;
  color: var(--ink);
  line-height: 1;
  text-transform: uppercase;
}

.brand__text {
  display: inline-block;
}

.brand__slash {
  display: inline-block;
  width: 8px;
  height: 34px;
  background: var(--accent-green);
  transform: skewX(-20deg);
  border-radius: 2px;
  box-shadow: 0 0 12px rgba(42, 157, 143, 0.4);
}

.brand__sub {
  font-family: var(--font-data);
  font-size: 0.68rem;
  color: var(--muted);
  letter-spacing: 0.28em;
  margin-top: 8px;
  border-left: 1px solid var(--border);
  padding-left: 10px;
  text-transform: uppercase;
  line-height: 1.4;
  align-self: center;
}

.region-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-data);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: var(--muted);
  background: rgba(22, 33, 62, 0.6);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 5px 14px;
  margin-left: auto;
  white-space: nowrap;
}

.region-badge__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-green);
  box-shadow: 0 0 8px rgba(42, 157, 143, 0.8);
  animation: pulse-dot 2.4s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.65; transform: scale(0.86); }
}

.nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: rgba(29, 53, 87, 0.5);
  transition: background var(--transition), border-color var(--transition);
}

.nav-toggle__bar {
  width: 22px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle__label {
  font-family: var(--font-data);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  color: var(--muted);
}

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

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav-panel__list {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-panel__link {
  display: block;
  font-family: var(--font-data);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--ink);
  padding: 10px 16px;
  border-radius: 8px;
  position: relative;
  transition: color var(--transition), background var(--transition);
  white-space: nowrap;
}

.nav-panel__link::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 4px;
  height: 2px;
  background: var(--accent-green);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.nav-panel__link:hover {
  color: var(--accent-green);
  background: rgba(42, 157, 143, 0.08);
}

.nav-panel__link:hover::after,
.nav-panel__link[aria-current="page"]::after {
  transform: scaleX(1);
}

.nav-panel__link[aria-current="page"] {
  color: var(--accent-green);
  background: rgba(42, 157, 143, 0.1);
}

/* ===== Footer ===== */
.site-footer {
  background: #0E1020;
  border-top: 2px solid rgba(230, 57, 70, 0.4);
  margin-top: 80px;
  position: relative;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -10px;
  left: 0;
  width: 100%;
  height: 10px;
  background: var(--bg-deep);
  clip-path: polygon(0 0, 100% 100%, 100% 0);
  opacity: 0.6;
}

.site-footer::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent-green), var(--primary-red), transparent);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2.2fr 1fr 1fr 1.5fr;
  gap: 48px;
  margin-bottom: 56px;
}

.footer-brand__logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-heading);
  font-size: 2rem;
  color: var(--ink);
  line-height: 1;
  margin-bottom: 18px;
}

.footer-brand__text {
  display: inline-block;
}

.footer-brand__slash {
  display: inline-block;
  width: 6px;
  height: 26px;
  background: var(--accent-green);
  transform: skewX(-20deg);
  border-radius: 2px;
}

.footer-brand__desc {
  font-size: 0.95rem;
  color: var(--muted);
  margin-bottom: 12px;
  max-width: 40ch;
}

.footer-brand__trust {
  font-family: var(--font-data);
  font-size: 0.75rem;
  color: var(--accent-green);
  border-left: 3px solid var(--accent-green);
  padding-left: 12px;
  max-width: 46ch;
  line-height: 1.7;
}

.footer-title {
  font-family: var(--font-data);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  color: var(--primary-red);
  text-transform: uppercase;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-title::before {
  content: "";
  width: 14px;
  height: 2px;
  background: var(--primary-red);
  border-radius: 2px;
}

.footer-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-list a {
  font-size: 0.92rem;
  color: var(--muted);
  transition: color var(--transition), padding-left var(--transition);
  font-family: var(--font-body);
}

.footer-list a:hover {
  color: var(--accent-green);
  padding-left: 6px;
}

.footer-list--contact li {
  font-size: 0.88rem;
  color: var(--muted);
  line-height: 1.6;
}

.footer-list--contact a {
  font-family: var(--font-data);
  font-size: 0.84rem;
  color: var(--data-cyan);
  word-break: break-all;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  border-top: 1px solid rgba(69, 123, 157, 0.3);
  padding-top: 24px;
}

.footer-bottom__text {
  font-size: 0.84rem;
  color: var(--muted);
  font-family: var(--font-data);
}

.footer-bottom__icp {
  font-size: 0.82rem;
  color: var(--data-cyan);
  font-family: var(--font-data);
  transition: color var(--transition);
}

.footer-bottom__icp:hover {
  color: var(--accent-green);
}

.footer-bottom__note {
  font-size: 0.8rem;
  color: rgba(168, 218, 220, 0.55);
  font-family: var(--font-data);
  letter-spacing: 0.06em;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-data);
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 14px 28px;
  border-radius: 10px;
  transition: background var(--transition), color var(--transition),
              border-color var(--transition), box-shadow var(--transition),
              transform var(--transition);
  text-transform: uppercase;
  cursor: pointer;
  border: 2px solid transparent;
}

.btn-primary {
  background: var(--primary-red);
  color: var(--ink);
  box-shadow: 0 4px 24px rgba(230, 57, 70, 0.35);
}

.btn-primary:hover {
  background: #f4505f;
  transform: translateY(-2px);
  box-shadow: 0 6px 32px rgba(230, 57, 70, 0.5);
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--border);
  color: var(--ink);
}

.btn-outline:hover {
  border-color: var(--accent-green);
  color: var(--accent-green);
  box-shadow: 0 4px 20px rgba(42, 157, 143, 0.25);
  transform: translateY(-2px);
}

.btn-quick {
  background: var(--primary-blue);
  color: var(--ink);
  box-shadow: 0 4px 20px rgba(29, 53, 87, 0.5);
}

.btn-quick:hover {
  background: var(--primary-red);
  box-shadow: 0 6px 28px rgba(230, 57, 70, 0.4);
  transform: translateY(-2px);
}

/* ===== Section Labels ===== */
.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-data);
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  color: var(--accent-green);
  text-transform: uppercase;
  margin-bottom: 14px;
}

.section-kicker::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--accent-green);
  border-radius: 2px;
  display: inline-block;
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3.5rem);
  line-height: 0.95;
  color: var(--ink);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.section-title--blue {
  color: var(--data-cyan);
}

/* ===== Page Header ===== */
.page-header {
  background: var(--bg-elevated);
  border-bottom: 3px solid var(--primary-red);
  position: relative;
  padding: 56px 0 44px;
  margin-bottom: 64px;
}

.page-header::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 32%;
  height: 100%;
  background: linear-gradient(135deg, rgba(230, 57, 70, 0.18), transparent 70%);
  clip-path: polygon(25% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
  font-family: var(--font-data);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
}

.breadcrumb a {
  color: var(--muted);
  transition: color var(--transition);
}

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

.breadcrumb__sep {
  color: var(--border);
  margin: 0 2px;
}

.breadcrumb__current {
  color: var(--accent-green);
}

/* ===== Content Base ===== */
#main-content {
  position: relative;
  z-index: 2;
}

.content-section {
  padding: 72px 0;
}

.content-section--tight {
  padding: 40px 0;
}

/* ===== Image Frame ===== */
.image-frame {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  aspect-ratio: 16 / 9;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 180px;
}

.image-frame::after {
  content: "IMG";
  font-family: var(--font-data);
  font-size: 0.7rem;
  color: rgba(168, 218, 220, 0.4);
  letter-spacing: 0.3em;
}

.image-frame--tall {
  aspect-ratio: 3 / 4;
}

.image-frame--wide {
  aspect-ratio: 21 / 9;
}

.image-frame--round {
  border-radius: 50%;
  aspect-ratio: 1 / 1;
}

/* ===== Quick Panel (Floating) ===== */
.quick-panel {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 1500;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 10px;
}

.quick-panel__content {
  display: none;
  background: rgba(22, 33, 62, 0.96);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px;
  width: 280px;
  box-shadow: 0 12px 48px rgba(0, 0, 0, 0.55);
  border-left: 4px solid var(--primary-red);
}

.quick-panel__content[data-open="true"] {
  display: block;
}

.quick-panel__title {
  font-family: var(--font-data);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--accent-green);
  text-transform: uppercase;
  margin-bottom: 10px;
}

.quick-panel__text {
  font-size: 0.88rem;
  color: var(--muted);
  line-height: 1.7;
}

.quick-panel__link {
  display: inline-block;
  margin-top: 12px;
  font-family: var(--font-data);
  font-size: 0.8rem;
  color: var(--data-cyan);
  border-bottom: 2px solid var(--accent-green);
  padding-bottom: 2px;
  transition: color var(--transition);
}

.quick-panel__link:hover {
  color: var(--accent-green);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }

  .nav-panel__link {
    font-size: 0.76rem;
    padding: 10px 10px;
  }
}

@media (max-width: 820px) {
  :root {
    --header-h: 64px;
  }

  .container--header {
    height: var(--header-h);
    gap: 12px;
  }

  .brand__mark {
    font-size: 1.6rem;
  }

  .brand__slash {
    height: 26px;
  }

  .brand__sub {
    display: none;
  }

  .region-badge {
    margin-left: auto;
    font-size: 0.7rem;
    padding: 4px 10px;
  }

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

  .nav-panel {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: rgba(26, 26, 46, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
    padding: 0 24px;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height 260ms cubic-bezier(.4, 0, .2, 1),
                opacity 200ms ease, padding 200ms ease;
  }

  .nav-panel[data-open] {
    max-height: 420px;
    opacity: 1;
    padding: 20px 24px 24px;
  }

  .nav-panel__list {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }

  .nav-panel__link {
    font-size: 1rem;
    padding: 14px 16px;
    border-radius: 8px;
    text-align: left;
    border-left: 3px solid transparent;
  }

  .nav-panel__link:hover {
    background: rgba(42, 157, 143, 0.12);
    border-left-color: var(--accent-green);
  }

  .nav-panel__link[aria-current="page"] {
    border-left-color: var(--primary-red);
    background: rgba(230, 57, 70, 0.14);
    color: var(--ink);
  }

  .nav-panel__link::after {
    display: none;
  }
}

@media (max-width: 600px) {
  .container {
    width: min(100% - 32px, var(--container-max));
  }

  .region-badge {
    display: none;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

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

  .content-section {
    padding: 48px 0;
  }

  .quick-panel {
    right: 16px;
    bottom: 16px;
  }

  .quick-panel__content {
    width: calc(100vw - 48px);
    max-width: 300px;
  }

  .btn {
    width: 100%;
  }
}

@media (max-width: 420px) {
  .brand__slug {
    display: none;
  }

  .brand__slash {
    display: inline-block;
  }
}

/* ===== Reduced Motion ===== */
@media (prefers-reduced-motion: reduce) {
  .region-badge__dot {
    animation: none;
  }

  .nav-panel {
    transition: none;
  }

  .quick-panel__content,
  .quick-panel__content[data-open="true"] {
    transition: none;
  }

  .btn, .nav-panel__link, .nav-toggle, .footer-list a, .brand, .footer-bottom__icp {
    transition: none;
  }
}