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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  font-weight: 400;
  letter-spacing: 0.04em;
  background: var(--c-bg);
  color: var(--c-text);
}

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

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

ul, ol {
  list-style: none;
}

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

h1, h2, h3, h4 {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: 0.02em;
  color: var(--c-text);
}

h1 {
  font-size: clamp(2.6rem, 5vw, 4.25rem);
}

h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
}

h3 {
  font-size: 1.35rem;
}

:root {
  --c-bg: #0D1B2A;
  --c-surface: #1B263B;
  --c-neon: #00FF88;
  --c-zest: #FF6B35;
  --c-text: #E0E6F0;
  --c-mute: #8A94A6;
  --c-line: #1F3A5F;
  --c-ok: #22C55E;
  --c-warn: #F59E0B;
  --c-shade: #00000088;
  --font-head: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-body: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --h-header: 76px;
  --w-content: 1320px;
  --r-lg: 28px;
  --r-md: 18px;
  --r-pill: 999px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --sh-1: 0 12px 32px rgba(0, 0, 0, 0.35);
  --sh-2: 0 24px 60px rgba(0, 0, 0, 0.42);
}

/* ============ FOCUS & ACCESSIBILITY ============ */
:focus-visible {
  outline: 2px solid var(--c-neon);
  outline-offset: 3px;
  border-radius: 6px;
}

.skip-link {
  position: fixed;
  top: -100px;
  left: 16px;
  z-index: 1000;
  padding: 12px 24px;
  background: var(--c-neon);
  color: var(--c-bg);
  font-weight: 800;
  font-size: 14px;
  border-radius: var(--r-pill);
  box-shadow: var(--sh-1);
  transition: top 0.25s var(--ease);
}

.skip-link:focus-visible {
  top: 16px;
  outline: 2px solid var(--c-text);
}

/* ============ UTILITY LAYOUT ============ */
.content-wrap {
  max-width: var(--w-content);
  margin: 0 auto;
  padding: 0 28px;
}

.grid-auto {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
}

/* ============ BUTTONS ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 24px;
  border-radius: var(--r-pill);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.2;
  cursor: pointer;
  transition: transform 0.2s var(--ease), box-shadow 0.25s var(--ease), background 0.25s, color 0.25s, border-color 0.25s;
}

.btn:active {
  transform: scale(0.97);
}

.btn--primary {
  background: var(--c-neon);
  color: var(--c-bg);
  box-shadow: 0 8px 24px rgba(0, 255, 136, 0.22);
}

.btn--primary:hover {
  background: #33ffa0;
  box-shadow: 0 12px 30px rgba(0, 255, 136, 0.30);
}

.btn--ghost {
  background: transparent;
  color: var(--c-text);
  border: 1px solid var(--c-line);
}

.btn--ghost:hover {
  border-color: var(--c-neon);
  color: var(--c-neon);
}

.btn--coral {
  background: var(--c-zest);
  color: var(--c-bg);
}

.btn--coral:hover {
  background: #ff8256;
}

/* ============ BREADCRUMB ============ */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--c-mute);
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.breadcrumb__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.breadcrumb__item:not(:last-child)::after {
  content: "/";
  color: var(--c-line);
}

.breadcrumb__link {
  color: var(--c-mute);
  transition: color 0.2s;
}

.breadcrumb__link:hover {
  color: var(--c-neon);
}

.breadcrumb__current {
  color: var(--c-text);
  font-weight: 600;
}

/* ============ SECTION HEAD & COORD DIVIDER ============ */
.section-head {
  display: flex;
  align-items: center;
  gap: 16px;
}

.section-head__tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: var(--r-pill);
  background: rgba(0, 255, 136, 0.08);
  border: 1px solid rgba(0, 255, 136, 0.22);
  color: var(--c-neon);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
  white-space: nowrap;
}

.section-head__tag::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

.coord-divider {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--c-line), transparent);
  position: relative;
}

.coord-divider::after {
  content: "";
  position: absolute;
  right: 0;
  top: -3px;
  width: 7px;
  height: 7px;
  background: var(--c-zest);
  transform: rotate(45deg);
  border-radius: 2px;
}

/* ============ STAT CHIP ============ */
.stat-chip {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 18px;
  border-radius: var(--r-pill);
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  font-size: 13px;
  color: var(--c-mute);
  white-space: nowrap;
}

.stat-chip__num {
  font-weight: 900;
  font-size: 1.5em;
  color: var(--c-neon);
  letter-spacing: 0;
}

/* ============ VISUAL FRAME ============ */
.visual-frame {
  position: relative;
  overflow: hidden;
  border-radius: var(--r-lg);
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  aspect-ratio: 16 / 9;
}

.visual-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(135deg, rgba(0, 255, 136, 0.10), transparent 45%, rgba(255, 107, 53, 0.10));
}

.visual-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}

.visual-frame:hover img {
  transform: scale(1.03);
}

.visual-frame--hero {
  aspect-ratio: 21 / 9;
  border-radius: 32px;
}

.visual-frame--tall {
  aspect-ratio: 4 / 5;
}

.visual-frame--wide {
  aspect-ratio: 2 / 1;
}

/* ============ HEADER ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 27, 42, 0.96);
  border-bottom: 1px solid var(--c-line);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.site-header::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 3px;
  background: linear-gradient(90deg, var(--c-neon) 0%, var(--c-zest) 45%, transparent 90%);
  transform: skewX(-24deg);
  transform-origin: left;
  pointer-events: none;
}

.site-header__inner {
  max-width: var(--w-content);
  margin: 0 auto;
  padding: 0 28px;
  min-height: var(--h-header);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.site-header__brand {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}

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

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  background: linear-gradient(90deg, var(--c-neon), var(--c-zest));
  z-index: 200;
  pointer-events: none;
}

/* ============ BRAND ============ */
.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--c-text);
  font-weight: 900;
  font-size: 18px;
  letter-spacing: 0.02em;
}

.brand-link__badge {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--c-neon) 0%, #00b56a 100%);
  color: var(--c-bg);
  display: grid;
  place-items: center;
  font-size: 20px;
  font-weight: 900;
  transform: rotate(-8deg);
  box-shadow: 0 4px 14px rgba(0, 255, 136, 0.25);
  transition: transform 0.25s var(--ease);
}

.brand-link:hover .brand-link__badge {
  transform: rotate(4deg) scale(1.05);
}

.brand-coord {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 11px;
  color: var(--c-mute);
  letter-spacing: 0.14em;
  white-space: nowrap;
}

.brand-coord__line {
  width: 48px;
  height: 1px;
  background: var(--c-line);
  position: relative;
}

.brand-coord__line::after {
  content: "";
  position: absolute;
  right: 0;
  top: -2.5px;
  width: 6px;
  height: 6px;
  background: var(--c-neon);
  border-radius: 50%;
  box-shadow: 0 0 8px rgba(0, 255, 136, 0.5);
}

/* ============ NAVIGATION ============ */
.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  border-radius: var(--r-pill);
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  color: var(--c-text);
  transition: border-color 0.25s, background 0.25s;
}

.nav-toggle:hover {
  border-color: var(--c-neon);
}

.nav-toggle__box {
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 16px;
}

.nav-toggle__bar {
  height: 2px;
  border-radius: 2px;
  background: var(--c-neon);
}

.nav-toggle__label {
  font-size: 14px;
  font-weight: 600;
}

.site-nav {
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  right: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px;
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: 24px;
  box-shadow: var(--sh-2);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity 0.25s ease, transform 0.3s var(--ease), visibility 0.3s;
}

.site-nav[data-open] {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.site-nav__list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.site-nav__list a {
  display: block;
  padding: 12px 16px;
  border-radius: 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--c-text);
  transition: background 0.25s, color 0.25s;
}

.site-nav__list a:hover {
  background: rgba(0, 255, 136, 0.10);
  color: var(--c-neon);
}

.site-nav__list a[aria-current="page"] {
  background: rgba(0, 255, 136, 0.12);
  color: var(--c-neon);
}

.site-nav__cta {
  position: relative;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 8px;
  padding: 12px 20px;
  background: var(--c-neon);
  color: var(--c-bg);
  border-radius: 16px;
  font-size: 14px;
  font-weight: 800;
  line-height: 1.3;
  box-shadow: 0 4px 20px rgba(0, 255, 136, 0.22);
  transition: background 0.3s, box-shadow 0.3s;
}

.site-nav__cta:hover {
  background: #2dff9d;
  box-shadow: 0 8px 28px rgba(0, 255, 136, 0.32);
}

.site-nav__cta::after {
  content: "";
  position: absolute;
  top: 0;
  left: -60%;
  width: 40%;
  height: 100%;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, 0.55), transparent);
  transform: skewX(-20deg);
  transition: left 0.5s ease;
}

.site-nav__cta:hover::after {
  left: 130%;
}

.site-nav__cta-arrow {
  font-size: 16px;
  line-height: 1;
}

/* ============ DESKTOP NAVIGATION ============ */
@media (min-width: 961px) {
  .nav-toggle {
    display: none;
  }

  .site-nav {
    position: static;
    flex-direction: row;
    align-items: center;
    gap: 8px;
    padding: 0;
    background: none;
    border: none;
    border-radius: 0;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
    transition: none;
  }

  .site-nav__list {
    flex-direction: row;
    align-items: center;
    gap: 4px;
  }

  .site-nav__list a {
    padding: 10px 16px;
    border-radius: var(--r-pill);
  }

  .site-nav__cta {
    width: auto;
    margin-top: 0;
    margin-left: 8px;
    border-radius: var(--r-pill);
  }
}

/* ============ FOOTER ============ */
.site-footer {
  margin-top: 80px;
  background: #0A1622;
  border-top: 2px solid var(--c-line);
  position: relative;
}

.site-footer__main {
  max-width: var(--w-content);
  margin: 0 auto;
  padding: 64px 28px 32px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.4fr;
  gap: 40px;
}

.site-footer__brand .brand-link {
  font-size: 20px;
}

.site-footer .brand-link__badge {
  width: 36px;
  height: 36px;
  font-size: 17px;
  border-radius: 11px;
}

.site-footer__slogan {
  margin-top: 14px;
  font-size: 14px;
  color: var(--c-text);
  letter-spacing: 0.04em;
}

.site-footer__trust {
  margin-top: 8px;
  font-size: 13px;
  color: var(--c-mute);
  line-height: 1.7;
  max-width: 30em;
}

.site-footer__title {
  font-size: 13px;
  font-weight: 800;
  color: var(--c-mute);
  letter-spacing: 0.14em;
  margin-bottom: 16px;
}

.site-footer__links {
  display: grid;
  gap: 10px;
}

.site-footer__links a {
  font-size: 14px;
  color: var(--c-text);
  transition: color 0.2s;
}

.site-footer__links a:hover {
  color: var(--c-neon);
}

.site-footer__contact {
  font-size: 14px;
}

.site-footer__line {
  color: var(--c-text);
  margin-bottom: 10px;
  line-height: 1.5;
  overflow-wrap: break-word;
}

.site-footer__meta {
  max-width: var(--w-content);
  margin: 0 auto;
  padding: 20px 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  border-top: 1px solid var(--c-line);
  font-size: 13px;
  color: var(--c-mute);
}

.site-footer__copy {
  letter-spacing: 0.02em;
}

.site-footer__office {
  letter-spacing: 0.04em;
}

/* ============ LOCATOR BLOCK ============ */
.locator-block {
  display: flex;
  align-items: center;
  gap: 12px;
  max-width: var(--w-content);
  margin: 0 auto 24px;
  padding: 14px 24px;
  background: linear-gradient(90deg, rgba(0, 255, 136, 0.14), rgba(0, 255, 136, 0.04));
  border: 1px solid rgba(0, 255, 136, 0.35);
  border-radius: var(--r-pill);
  color: var(--c-neon);
  font-weight: 700;
  font-size: 14px;
  transition: background 0.3s, border-color 0.3s, transform 0.25s var(--ease);
}

.locator-block:hover {
  background: rgba(0, 255, 136, 0.20);
  border-color: var(--c-neon);
  transform: translateY(-2px);
}

.locator-block__dot {
  width: 10px;
  height: 10px;
  flex-shrink: 0;
  background: var(--c-neon);
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(0, 255, 136, 0.15);
}

.locator-block__text {
  letter-spacing: 0.02em;
}

.locator-block__hint {
  margin-left: auto;
  font-size: 12px;
  font-weight: 400;
  color: var(--c-mute);
}

.locator-block__arrow {
  font-size: 18px;
  line-height: 1;
}

/* ============ REVEAL MOTION ============ */
@media (prefers-reduced-motion: no-preference) {
  [data-reveal] {
    opacity: 0;
    transform: translateY(28px) skewX(-3deg);
    transition: opacity 0.55s ease, transform 0.7s var(--ease);
    transition-delay: var(--reveal-delay, 0ms);
  }

  [data-reveal][data-revealed] {
    opacity: 1;
    transform: none;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.001s !important;
    transition-duration: 0.001s !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}

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

  .brand-coord {
    display: none;
  }
}

@media (max-width: 640px) {
  .site-header__inner {
    padding: 0 16px;
    gap: 12px;
  }

  .site-header__brand .brand-link__name {
    font-size: 16px;
  }

  .brand-link__badge {
    width: 36px;
    height: 36px;
    font-size: 17px;
  }

  .nav-toggle__label {
    display: none;
  }

  .nav-toggle {
    padding: 8px 12px;
  }

  .content-wrap {
    padding: 0 16px;
  }

  .site-footer__main {
    grid-template-columns: 1fr;
    padding: 48px 16px 24px;
    gap: 32px;
  }

  .site-footer__meta {
    flex-direction: column;
    text-align: center;
    padding: 16px;
  }

  .locator-block {
    flex-wrap: wrap;
    border-radius: 20px;
    margin: 0 16px 16px;
    padding: 12px 16px;
  }

  .locator-block__hint {
    width: 100%;
    margin-left: 22px;
  }

  .visual-frame--hero {
    aspect-ratio: 4 / 3;
  }
}