/* ===== 01. Reset ===== */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; }
button { font-family: inherit; font-size: inherit; line-height: inherit; border: none; background: none; color: inherit; cursor: pointer; }
img { max-width: 100%; display: block; height: auto; }
ul, ol { margin: 0; padding-left: 1.4em; }
p { margin: 0 0 1em; }
a { color: var(--red); text-decoration: none; transition: color 0.2s ease; }
a:hover { color: var(--deep-red); }
h1, h2, h3, h4, h5, h6 { font-family: var(--font-display); line-height: 1.2; margin: 0 0 0.5em; color: var(--dark); letter-spacing: 0.02em; }

/* ===== 02. Variables ===== */
:root {
  color-scheme: light;
  --red: #E6392D;
  --dark: #1B1B1F;
  --gold: #D4A017;
  --white: #F5F5F0;
  --orange: #FF6B4A;
  --grayblue: #6B7A8F;
  --deep-red: #7D2E22;
  --glass-light: rgba(255,255,255,0.7);
  --glass-dark: rgba(27,27,31,0.8);
  --header-width: 300px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --radius: 14px;
  --font-display: Impact, 'Arial Black', 'Heiti SC', 'PingFang SC', sans-serif;
  --font-body: 'Noto Sans SC', 'Source Han Sans SC', 'Microsoft YaHei', sans-serif;
  --body-bg: var(--white);
  --body-text: #2A2A30;
  --card-bg: rgba(255,255,255,0.7);
  --card-border: rgba(0,0,0,0.08);
  --shadow-card: 0 8px 32px rgba(27,27,31,0.08);
  --focus-ring: 0 0 0 3px rgba(230,57,45,0.35);
}

/* ===== 03. Base ===== */
body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  background: var(--body-bg);
  color: var(--body-text);
  margin-left: var(--header-width);
  transition: background 0.3s ease, color 0.3s ease;
}
:focus-visible {
  outline: 2px solid var(--red);
  outline-offset: 3px;
  box-shadow: var(--focus-ring);
}

/* ===== 04. Utilities & Layout ===== */
.main-content { display: block; min-height: 75vh; }
.container { width: 100%; max-width: 1260px; margin: 0 auto; padding: 0 32px; }
.section { padding: 80px 0; }
.section-head { display: flex; align-items: baseline; justify-content: space-between; flex-wrap: wrap; gap: 12px; margin-bottom: 36px; }
.section-title { font-family: var(--font-display); font-size: clamp(28px, 4vw, 42px); text-transform: uppercase; font-weight: 900; margin: 0; letter-spacing: 0.03em; }
.section-title small { display: inline-block; font-size: 13px; color: var(--grayblue); font-family: var(--font-body); font-weight: 400; text-transform: none; margin-left: 10px; letter-spacing: 0.05em; }
.section-more { font-size: 14px; font-weight: 700; color: var(--red); }

/* ===== 05. Buttons ===== */
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 13px 30px; border: 2px solid transparent; border-radius: 6px; font-family: var(--font-body); font-size: 15px; font-weight: 700; cursor: pointer; text-decoration: none; transition: all 0.25s ease; }
.btn-primary { background: var(--red); color: #fff; box-shadow: 0 4px 18px rgba(230,57,45,0.3); }
.btn-primary:hover { background: var(--deep-red); color: #fff; transform: translateY(-2px); }
.btn-outline { border-color: var(--red); color: var(--red); background: transparent; }
.btn-outline:hover { background: var(--red); color: #fff; transform: translateY(-2px); }

/* ===== 06. Cards & Glass ===== */
.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 28px;
  backdrop-filter: blur(8px);
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}
.card:hover { box-shadow: var(--shadow-card); transform: translateY(-4px); }
.card-title { font-family: var(--font-display); font-size: 20px; margin-bottom: 12px; font-weight: 900; }
.card-text { font-size: 14px; line-height: 1.7; color: var(--grayblue); }

/* ===== 07. Grid ===== */
.grid { display: grid; gap: 24px; grid-template-columns: 1fr; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* ===== 08. Breadcrumb ===== */
.breadcrumb { display: flex; flex-wrap: wrap; list-style: none; gap: 6px; padding: 0; margin: 0 0 24px; font-size: 14px; }
.breadcrumb-item { display: flex; align-items: center; }
.breadcrumb-item + .breadcrumb-item::before { content: '/'; margin: 0 6px; color: var(--grayblue); }
.breadcrumb-link { color: var(--grayblue); text-decoration: none; font-weight: 500; }
.breadcrumb-link:hover { color: var(--red); }
.breadcrumb-item[aria-current="page"] { color: var(--red); font-weight: 700; }

/* ===== 09. Page Entrance ===== */
.page-entrance {
  padding: 72px 32px;
  background: linear-gradient(130deg, var(--dark), var(--deep-red));
  color: var(--white);
  border-bottom: 4px solid var(--red);
}
.page-entrance h1 { color: #fff; font-size: clamp(32px, 6vw, 56px); margin-bottom: 8px; text-transform: uppercase; }
.page-entrance .breadcrumb { margin-bottom: 0; }
.page-entrance .breadcrumb-link { color: rgba(255,255,255,0.7); }
.page-entrance .breadcrumb-link:hover { color: var(--gold); }
.page-entrance .breadcrumb-item[aria-current="page"] { color: var(--gold); }
.page-entrance .breadcrumb-item + .breadcrumb-item::before { color: rgba(255,255,255,0.4); }

/* ===== 10. Header ===== */
.site-header {
  position: fixed;
  inset: 0 auto 0 0;
  width: var(--header-width);
  background:
    linear-gradient(115deg, transparent 0%, rgba(230,57,45,0.08) 45%, transparent 75%),
    var(--dark);
  border-right: 4px solid var(--red);
  z-index: 1100;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  overflow-x: hidden;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 2000;
  background: var(--red);
  color: #fff;
  font-weight: 700;
  padding: 12px 24px;
  border-radius: 0 0 8px 0;
  text-decoration: none;
}
.skip-link:focus { left: 0; color: #fff; }

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--red), var(--gold));
  transform: scaleX(0);
  transform-origin: 0 0;
  z-index: 2000;
  pointer-events: none;
}

.header-bar {
  padding: 28px 24px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.brand-link { display: flex; align-items: center; gap: 12px; text-decoration: none; min-width: 0; }
.brand-mark {
  flex: 0 0 auto;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--red), var(--orange));
  color: #fff;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 900;
  clip-path: polygon(0 0, 100% 0, 100% 70%, 70% 100%, 0 100%);
}
.brand-name {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 900;
  color: #fff;
  text-transform: uppercase;
  letter-spacing: 2px;
  white-space: nowrap;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  border: 2px solid rgba(255,255,255,0.25);
  border-radius: 8px;
  padding: 8px 12px;
  color: #fff;
  min-width: 62px;
}
.nav-toggle:hover { border-color: var(--red); }
.nav-toggle-icon { display: flex; flex-direction: column; gap: 4px; }
.nav-toggle-line { display: block; width: 22px; height: 2px; background: #fff; border-radius: 2px; transition: transform 0.3s ease, opacity 0.3s ease; }
.nav-toggle-label { font-size: 11px; margin-top: 3px; letter-spacing: 1px; }
.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.nav-rail {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 32px;
  padding: 32px 20px;
  overflow-y: auto;
}

.nav-wrap { display: flex; flex-direction: column; gap: 20px; }
.nav-caption {
  font-family: var(--font-display);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 4px;
  color: var(--grayblue);
  margin: 0;
  padding-left: 8px;
  border-left: 3px solid var(--gold);
}
.nav-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 4px; }
.nav-item { position: relative; }
.nav-link {
  display: block;
  font-size: 16px;
  font-weight: 600;
  color: rgba(255,255,255,0.78);
  padding: 12px 16px;
  border-radius: 6px;
  border-left: 3px solid transparent;
  transition: all 0.25s ease;
  text-decoration: none;
}
.nav-link:hover { color: #fff; background: rgba(255,255,255,0.06); border-left-color: var(--orange); padding-left: 20px; }
.nav-link[aria-current="page"] {
  color: #fff;
  background: rgba(230,57,45,0.18);
  border-left-color: var(--red);
  font-weight: 700;
}

.header-meta {
  display: flex;
  flex-direction: column;
  gap: 4px;
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 24px;
  margin-top: 24px;
}
.header-contact, .header-search {
  color: rgba(255,255,255,0.65);
  font-size: 14px;
  padding: 8px 4px;
  text-decoration: none;
  display: flex;
  gap: 8px;
  align-items: center;
  transition: color 0.2s ease;
}
.header-contact:hover, .header-search:hover { color: var(--gold); }
.header-search-icon {
  font-size: 15px;
  font-weight: 700;
  color: var(--gold);
  width: 20px;
  height: 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(212,160,23,0.5);
  border-radius: 4px;
}

/* ===== 11. Footer ===== */
.site-footer {
  background: var(--dark);
  color: rgba(255,255,255,0.8);
  position: relative;
}
.site-footer::before {
  content: '';
  display: block;
  height: 6px;
  background: linear-gradient(90deg, var(--red) 0%, var(--deep-red) 55%, var(--gold) 55%, var(--gold) 100%);
}

.footer-top {
  max-width: 1260px;
  margin: 0 auto;
  padding: 64px 48px 48px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.2fr 1fr;
  gap: 48px;
}

.footer-brand-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 20px; }
.footer-brand-mark {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--red), var(--orange));
  color: #fff;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 900;
  clip-path: polygon(0 0, 100% 0, 100% 70%, 70% 100%, 0 100%);
}
.footer-brand-name {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 900;
  color: #fff;
  letter-spacing: 2px;
  text-transform: uppercase;
}
.footer-brand-desc {
  color: rgba(255,255,255,0.6);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 16px;
  max-width: 380px;
}
.footer-trust {
  color: var(--gold);
  font-size: 13px;
  line-height: 1.7;
  border-left: 3px solid var(--gold);
  padding-left: 12px;
  margin: 0;
  max-width: 380px;
}

.footer-col-title {
  font-family: var(--font-display);
  font-size: 16px;
  color: var(--white);
  text-transform: uppercase;
  letter-spacing: 2px;
  padding-bottom: 12px;
  margin-bottom: 20px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  position: relative;
}
.footer-col-title::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 42px;
  height: 2px;
  background: var(--red);
}

.footer-links { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.footer-link {
  color: rgba(255,255,255,0.68);
  font-size: 15px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: color 0.2s ease, padding-left 0.2s ease;
}
.footer-link::before { content: '▸'; color: var(--red); font-size: 12px; }
.footer-link:hover { color: var(--gold); padding-left: 4px; }

.footer-contact-list { list-style: none; padding: 0; margin: 0 0 16px; display: grid; gap: 8px; }
.footer-contact-list .footer-link { font-size: 14px; word-break: break-all; }
.footer-contact-list .footer-link::before { display: none; }
.footer-address, .footer-hours {
  font-size: 14px;
  color: rgba(255,255,255,0.5);
  margin: 6px 0;
  line-height: 1.75;
}

.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); }
.footer-bottom-inner {
  max-width: 1260px;
  margin: 0 auto;
  padding: 20px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}
.footer-copy, .footer-icp { font-size: 13px; color: rgba(255,255,255,0.45); margin: 0; }
.footer-icp { font-family: monospace; }

/* ===== 12. Images ===== */
.image-container {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, #e6e3dc, #cbc8c0);
  border-radius: var(--radius);
}
.image-container img { width: 100%; height: 100%; object-fit: cover; }
.image-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: 3px;
  color: var(--grayblue);
  text-transform: uppercase;
}
.image-caption { font-size: 13px; color: var(--grayblue); margin-top: 8px; text-align: center; }

/* ===== 13. Dark Scheme ===== */
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --body-bg: #0E0E10;
    --body-text: #E8E8E2;
    --card-bg: rgba(27,27,31,0.74);
    --card-border: rgba(255,255,255,0.08);
    --shadow-card: 0 8px 32px rgba(0,0,0,0.4);
  }
  body { background: var(--body-bg); color: var(--body-text); }
  h1, h2, h3, h4, h5, h6 { color: var(--body-text); }
  .image-container { background: linear-gradient(135deg, #26262c, #19191e); }
  .image-placeholder { color: rgba(255,255,255,0.35); }
}

/* ===== 14. Contrast ===== */
@media (prefers-contrast: more) {
  :root {
    --red: #D92015;
    --gold: #B8860B;
    --grayblue: #3F4D5F;
    --deep-red: #5E1A12;
  }
  .brand-mark, .footer-brand-mark { border: 2px solid #fff; }
  .nav-link[aria-current="page"] { outline: 1px solid var(--gold); }
  .btn-primary { border-color: #fff; }
}

/* ===== 15. Reduced Motion ===== */
@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;
  }
  .scroll-progress { display: none; }
  .nav-rail { transition: none; }
  .card:hover { transform: none; }
  .btn:hover { transform: none; }
}

/* ===== 16. Responsive ===== */
@media (max-width: 1279px) {
  .footer-top { grid-template-columns: 1fr 1fr; gap: 40px; }
}

@media (max-width: 1023px) {
  body { margin-left: 0; }

  .site-header {
    inset: 0 0 auto 0;
    width: 100%;
    height: 64px;
    border-right: none;
    border-bottom: 3px solid var(--red);
    overflow: visible;
  }

  .header-bar {
    height: 100%;
    padding: 0 16px;
    border-bottom: none;
    order: 0;
  }

  .brand-mark { width: 32px; height: 32px; font-size: 15px; }
  .brand-name { font-size: 18px; letter-spacing: 1px; }

  .nav-toggle { display: flex; order: 2; }

  .nav-rail {
    position: fixed;
    top: 64px;
    bottom: 0;
    left: 0;
    width: min(340px, 85vw);
    background: var(--dark);
    z-index: 1150;
    padding: 36px 28px 48px;
    transform: translateX(-100%);
    transition: transform 0.35s var(--ease);
    box-shadow: 8px 0 40px rgba(0,0,0,0.5);
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    gap: 20px;
  }
  .nav-rail[data-open] { transform: translateX(0); }

  .nav-caption { margin-bottom: 6px; }
  .nav-link { padding: 14px 16px; font-size: 17px; }

  .header-meta { margin-top: 16px; }

  .section { padding: 56px 0; }
  .container { padding: 0 24px; }

  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 599px) {
  .footer-top { grid-template-columns: 1fr; gap: 36px; padding: 48px 24px 32px; }
  .footer-bottom-inner { flex-direction: column; text-align: center; padding: 18px 16px; }
  .footer-brand-desc, .footer-trust { max-width: 100%; }

  .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .container { padding: 0 18px; }
  .section { padding: 40px 0; }
}

@media (max-width: 360px) {
  .brand-name { font-size: 15px; letter-spacing: 0; }
  .brand-mark { width: 28px; height: 28px; font-size: 13px; }
  .nav-rail { width: 85vw; }
}