/* ============================================================
   HYPERCAR.SITE · 门户页
   风格参照子站:深色 · 400 字重大标题 · mono 标签 · 三列网格卡
   ============================================================ */

:root {
  --bg: #050507;
  --bg2: #0a0b0f;
  --panel: #12141a;
  --line: rgba(255, 255, 255, 0.12);
  --line2: rgba(255, 255, 255, 0.22);
  --txt: #f2f2f5;
  --dim: #a9a9b3;
  --faint: #7d7d88;
  --bugatti: #004bfa;
  --ferrari: #dc0000;
  --yangwang: #c9a24b;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --mono: ui-monospace, "Cascadia Mono", "SF Mono", Consolas, monospace;
  --ease: cubic-bezier(0.65, 0, 0.35, 1);
  --ease2: cubic-bezier(0.22, 1, 0.36, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html, body { overflow-anchor: none; }
html { scroll-behavior: auto; }

body {
  background: var(--bg);
  color: var(--txt);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

.mono { font-family: var(--mono); letter-spacing: 0.04em; }

/* 光标 */
.cursor {
  position: fixed;
  top: 0; left: 0;
  width: 34px; height: 34px;
  margin: -17px 0 0 -17px;
  border: 1px solid rgba(255, 255, 255, 0.85);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9999;
  opacity: 0;
  transition: opacity 0.4s;
  mix-blend-mode: difference;
}
.cursor span { position: absolute; inset: 0; border: 1px solid rgba(255, 255, 255, 0.85); border-radius: 50%; }
.cursor.is-on { opacity: 1; }
.cursor.is-hot { transform: scale(1.6); }
@media (pointer: coarse) { .cursor { display: none; } }

/* 导航 */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 22px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: linear-gradient(180deg, rgba(5, 5, 7, 0.88), transparent);
  transition: background 0.5s, padding 0.5s;
}
.nav.is-solid {
  background: rgba(5, 5, 7, 0.85);
  backdrop-filter: blur(12px);
  padding: 14px 28px;
  border-bottom: 1px solid var(--line);
}
.nav__brand {
  font-family: var(--mono);
  font-size: 14px;
  letter-spacing: 0.34em;
  font-weight: 400;
}
.nav__dot { color: var(--faint); }
.lang-btn {
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--dim);
  border: 1px solid var(--line2);
  border-radius: 50%;
  width: 36px; height: 36px;
  display: grid;
  place-items: center;
  transition: border-color 0.3s, color 0.3s;
}
.lang-btn:hover { border-color: var(--txt); color: var(--txt); }

/* HERO */
.hero {
  min-height: 52vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 140px 24px 48px;
  position: relative;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(46% 80% at 50% 20%, rgba(255, 255, 255, 0.03), transparent 70%),
    radial-gradient(26% 60% at 18% 65%, rgba(0, 75, 250, 0.08), transparent 70%),
    radial-gradient(26% 60% at 82% 65%, rgba(220, 0, 0, 0.08), transparent 70%),
    radial-gradient(26% 60% at 50% 85%, rgba(201, 162, 75, 0.06), transparent 70%);
  pointer-events: none;
}
.hero__kicker {
  font-size: 12px;
  letter-spacing: 0.46em;
  color: var(--dim);
  margin-bottom: 26px;
  opacity: 0;
  animation: fadeUp 1s var(--ease2) 0.2s forwards;
}
.hero__title {
  font-weight: 400;
  font-size: clamp(56px, 12vw, 148px);
  line-height: 0.98;
  letter-spacing: 0.08em;
  color: #fff;
  text-shadow: 0 0 90px rgba(255, 255, 255, 0.12);
  opacity: 0;
  animation: fadeUp 1.1s var(--ease2) 0.35s forwards;
}
.hero__sub {
  margin-top: 22px;
  font-size: clamp(14px, 1.7vw, 18px);
  letter-spacing: 0.4em;
  color: var(--dim);
  opacity: 0;
  animation: fadeUp 1.1s var(--ease2) 0.55s forwards;
}
.hero__line {
  margin-top: 40px;
  width: 140px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--bugatti), var(--ferrari), var(--yangwang), transparent);
  opacity: 0;
  animation: fadeUp 1s var(--ease2) 0.8s forwards, linePulse 3.6s ease-in-out 1.8s infinite;
}
@keyframes linePulse {
  0%, 100% { opacity: 0.45; }
  50% { opacity: 1; }
}
@keyframes fadeUp { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: none; } }

/* 车型入口:三列网格 */
.doors {
  max-width: 1240px;
  margin: 0 auto;
  padding: 8px 28px 88px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: stretch;
}
.door {
  position: relative;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--panel), rgba(10, 11, 15, 0.6));
  border-radius: 6px;
  overflow: hidden;
  transition: transform 0.5s var(--ease), border-color 0.4s, box-shadow 0.5s;
  opacity: 0;
  transform: translateY(36px);
}
.door.is-in { opacity: 1; transform: none; }
.door:hover { transform: translateY(-8px); }

.door--bugatti:hover { border-color: rgba(0, 75, 250, 0.6); box-shadow: 0 0 0 1px rgba(0, 75, 250, 0.3), 0 30px 60px -26px rgba(0, 75, 250, 0.45); }
.door--ferrari:hover { border-color: rgba(220, 0, 0, 0.6); box-shadow: 0 0 0 1px rgba(220, 0, 0, 0.3), 0 30px 60px -26px rgba(220, 0, 0, 0.45); }
.door--yangwang:hover { border-color: rgba(201, 162, 75, 0.6); box-shadow: 0 0 0 1px rgba(201, 162, 75, 0.3), 0 30px 60px -26px rgba(201, 162, 75, 0.4); }

.door__media {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}
.door__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.85) brightness(0.92);
  transition: transform 1s var(--ease2), filter 0.8s;
}
.door:hover .door__img { transform: scale(1.05); filter: saturate(1) brightness(1); }

.door__no {
  position: absolute;
  top: 12px;
  left: 14px;
  font-size: clamp(40px, 4vw, 56px);
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(255, 255, 255, 0.28);
  pointer-events: none;
  text-shadow: 0 2px 18px rgba(0, 0, 0, 0.6);
}
.door--bugatti .door__no { -webkit-text-stroke-color: rgba(0, 75, 250, 0.55); }
.door--ferrari .door__no { -webkit-text-stroke-color: rgba(220, 0, 0, 0.55); }
.door--yangwang .door__no { -webkit-text-stroke-color: rgba(201, 162, 75, 0.55); }

.door__body {
  position: relative;
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 26px 26px 28px;
}
.door--bugatti .door__body { border-top: 2px solid rgba(0, 75, 250, 0.5); }
.door--ferrari .door__body { border-top: 2px solid rgba(220, 0, 0, 0.5); }
.door--yangwang .door__body { border-top: 2px solid rgba(201, 162, 75, 0.5); }

.door__tag {
  font-size: 11px;
  letter-spacing: 0.38em;
  color: var(--faint);
}
.door--bugatti .door__tag { color: #5b86ff; }
.door--ferrari .door__tag { color: #ff5a50; }
.door--yangwang .door__tag { color: #d8b96a; }
.door__title {
  font-weight: 400;
  font-size: clamp(30px, 2.6vw, 40px);
  letter-spacing: 0.04em;
  margin: 10px 0 8px;
  line-height: 1.05;
}
.door__sub {
  font-size: 13.5px;
  letter-spacing: 0.18em;
  color: var(--dim);
  margin-bottom: 18px;
}
.door__specs {
  display: flex;
  gap: 22px;
  margin-top: auto;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}
.door__specs span { color: var(--faint); font-size: 11.5px; letter-spacing: 0.14em; }
.door__specs b {
  font-size: 26px;
  font-weight: 400;
  color: #fff;
  margin-right: 4px;
}
.door--bugatti .door__specs b { color: #9db8ff; }
.door--ferrari .door__specs b { color: #ff8a80; }
.door--yangwang .door__specs b { color: #e2c98c; }

.door__enter {
  margin-top: 20px;
  font-size: 12px;
  letter-spacing: 0.28em;
  color: var(--dim);
  border-bottom: 1px solid transparent;
  padding-bottom: 4px;
  align-self: flex-start;
  transition: color 0.3s, border-color 0.3s;
}
.door--bugatti:hover .door__enter { color: var(--bugatti); border-color: var(--bugatti); }
.door--ferrari:hover .door__enter { color: var(--ferrari); border-color: var(--ferrari); }
.door--yangwang:hover .door__enter { color: var(--yangwang); border-color: var(--yangwang); }

/* 页脚 */
.footer {
  border-top: 1px solid var(--line);
  padding: 36px 28px 44px;
  text-align: center;
}
.footer__note { font-size: 12px; color: var(--faint); max-width: 680px; margin: 0 auto 18px; line-height: 1.8; }
.footer__links { display: flex; justify-content: center; gap: 28px; flex-wrap: wrap; }
.footer__links a {
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--dim);
  transition: color 0.3s;
}
.footer__links a:hover { color: var(--txt); }

/* 响应式 */
@media (max-width: 1020px) {
  .doors { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 680px) {
  .doors { grid-template-columns: 1fr; padding: 0 16px 56px; gap: 20px; }
  .door__title { font-size: 32px; }
  .door__specs { gap: 18px; }
  .door__specs b { font-size: 24px; }
  .nav { padding: 16px 18px; }
  .hero { padding-top: 110px; min-height: 48vh; }
}
@media (max-width: 480px) {
  .door__body { padding: 20px 18px 22px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  .hero__kicker, .hero__title, .hero__sub, .hero__line { opacity: 1; transform: none; }
  .door { opacity: 1; transform: none; }
  .cursor { display: none; }
}