/* ===== 理想车服 · 设计系统（苹果/理想/DJI 风格：极简、留白、醒目） ===== */
:root {
  --bg: #ffffff;
  --bg-soft: #f5f5f7;
  --ink: #1d1d1f;
  --ink-soft: #6e6e73;
  --dark: #0a0a0a;
  --dark-soft: #161618;
  --accent: #005651;       /* 品牌墨绿 */
  --accent-ink: #ffffff;
  --line: rgba(0, 0, 0, 0.08);
  --radius: 18px;
  --maxw: 1120px;
  --shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC",
    "Helvetica Neue", "Microsoft YaHei", Arial, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* 焦点可见（a11y） */
a:focus-visible, button:focus-visible, input:focus-visible,
select:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ===== 导航 ===== */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  border-bottom: 1px solid var(--line);
}
.nav__inner {
  max-width: var(--maxw);
  margin: 0 auto;
  height: 56px;
  padding: 0 22px;
  display: flex;
  align-items: center;
  gap: 18px;
}
.nav__logo { font-weight: 700; font-size: 19px; letter-spacing: 0.5px; color: var(--accent); }
.nav__links { display: flex; gap: 28px; margin-left: auto; }
.nav__links a { font-size: 14px; color: var(--ink-soft); transition: color 0.2s; }
.nav__links a:hover { color: var(--ink); }
.nav__cta {
  font-size: 14px;
  background: var(--accent);
  color: var(--accent-ink);
  padding: 7px 16px;
  border-radius: 980px;
  transition: transform 0.15s, opacity 0.2s;
}
.nav__cta:hover { opacity: 0.9; transform: translateY(-1px); }
.nav__burger {
  display: none;
  background: none; border: none; font-size: 22px; cursor: pointer; color: var(--ink);
}

/* ===== 通用区块 ===== */
.section { max-width: var(--maxw); margin: 0 auto; padding: 96px 22px; }
/* 锚点跳转时为 sticky 导航留出空间，避免标题被顶栏遮挡 */
section[id] { scroll-margin-top: 76px; }
.section__head { text-align: center; margin-bottom: 56px; }
.section__title {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  letter-spacing: -0.5px;
}
.section__title--light { color: #fff; }
.section__lead { color: var(--ink-soft); margin-top: 14px; font-size: 17px; }

.btn {
  display: inline-block;
  font-size: 16px;
  padding: 13px 30px;
  border-radius: 980px;
  cursor: pointer;
  border: none;
  transition: transform 0.15s, opacity 0.2s;
  font-family: inherit;
}
.btn--primary { background: var(--accent); color: var(--accent-ink); }
.btn--primary:hover { opacity: 0.92; transform: translateY(-1px); }
.btn--ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.btn--ghost:hover { border-color: var(--ink); transform: translateY(-1px); }

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  color: #fff;
}
.hero__media {
  position: absolute; inset: 0;
  background:
    radial-gradient(120% 80% at 50% 0%, #1B2A29 0%, #0a0a0a 60%),
    linear-gradient(160deg, #0D1F1E 0%, #050505 100%);
  background-size: cover; background-position: center;
}
.hero__media img { width: 100%; height: 100%; object-fit: cover; }

/* ===== 首屏轮播 ===== */
.hero__slide {
  position: absolute; inset: 0; z-index: 0;
  width: 100%; height: 100%; object-fit: cover;
  opacity: 0; transition: opacity 1s ease;
}
.hero__slide.is-active { opacity: 1; }
.hero__dots {
  position: absolute; left: 50%; bottom: 26px; transform: translateX(-50%);
  z-index: 3; display: flex; gap: 10px;
}
.hero__dot {
  width: 9px; height: 9px; border-radius: 50%; padding: 0; cursor: pointer;
  border: 1px solid rgba(255, 255, 255, 0.85); background: transparent;
  transition: background .25s ease, transform .25s ease;
}
.hero__dot.is-active { background: #fff; transform: scale(1.15); }
.hero__nav {
  position: absolute; top: 50%; transform: translateY(-50%); z-index: 3;
  width: 44px; height: 44px; border-radius: 50%; cursor: pointer;
  display: grid; place-items: center; color: #fff;
  background: rgba(0, 0, 0, 0.28); border: 1px solid rgba(255, 255, 255, 0.4);
  -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px);
  transition: background .2s ease; opacity: 0.78;
}
.hero__nav:hover { background: rgba(0, 0, 0, 0.45); opacity: 1; }
.hero__nav--prev { left: 22px; }
.hero__nav--next { right: 22px; }
.hero__nav svg { width: 20px; height: 20px; display: block; }
@media (max-width: 640px) {
  .hero__nav { display: none; }
  .hero__dots { bottom: 18px; }
}
.hero__overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,0.25) 0%, rgba(0,0,0,0.45) 100%);
}
.hero__content { position: relative; z-index: 2; padding: 0 22px; max-width: 880px; }
.hero__eyebrow {
  /* 字号由后台「首屏 Hero → 顶部小字字号」控制，通过内联 --eyebrow-size 覆盖 */
  font-size: var(--eyebrow-size, 20px);
  line-height: 1.5; letter-spacing: 3px; text-transform: uppercase;
  color: var(--accent); margin-bottom: 18px; font-weight: 600;
}
@media (max-width: 640px) {
  .hero__eyebrow { font-size: calc(var(--eyebrow-size, 20px) * 0.8); letter-spacing: 2px; }
}
.hero__title {
  font-size: clamp(40px, 7vw, 80px);
  font-weight: 700; letter-spacing: -1.5px; line-height: 1.05;
}
.hero__subtitle {
  margin: 22px auto 34px; max-width: 620px;
  font-size: clamp(16px, 2.2vw, 21px); color: rgba(255,255,255,0.82);
}

/* ===== 核心服务：竖版大图卡片（DJI 风格） ===== */
.svcs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.svc {
  position: relative; display: block; overflow: hidden;
  aspect-ratio: 2 / 3;
  border-radius: 16px; color: #fff;
  background: linear-gradient(160deg, #162423 0%, #0a0d0b 100%);
  isolation: isolate;
}
.svc__img { position: absolute; inset: 0; z-index: 0; }
.svc__img img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.7s cubic-bezier(0.2, 0.7, 0.3, 1);
}
.svc:hover .svc__img img { transform: scale(1.05); }
/* 顶部压暗保证白字可读，中部透出画面 */
.svc::after {
  content: ''; position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(180deg,
    rgba(0, 0, 0, 0.58) 0%,
    rgba(0, 0, 0, 0.12) 46%,
    rgba(0, 0, 0, 0.42) 100%);
}
.svc__body { position: relative; z-index: 2; text-align: center; padding: 46px 24px 0; }
.svc__title { font-size: clamp(22px, 2.1vw, 27px); font-weight: 700; letter-spacing: 0.5px; }
.svc__subtitle {
  margin: 12px auto 0; max-width: 260px;
  font-size: 14.5px; line-height: 1.6; color: rgba(255, 255, 255, 0.84);
}
.svc__more {
  display: inline-block; margin-top: 18px; font-size: 14px;
  color: rgba(255, 255, 255, 0.92); transition: color 0.2s;
}
.svc__more span {
  border-bottom: 1px solid rgba(255, 255, 255, 0.35); padding-bottom: 2px;
}
.svc:hover .svc__more { color: #fff; }
.svc:hover .svc__more span { border-bottom-color: rgba(255, 255, 255, 0.85); }

/* ===== 深色卖点带 ===== */
.band { background: var(--dark); color: #fff; padding: 96px 22px; }
.band__head { text-align: center; margin-bottom: 56px; }
.band__lead { color: rgba(255,255,255,0.6); }
.why { max-width: var(--maxw); margin: 0 auto; display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
/* 每一项都是通往图文二级页（/why?id=xxx）的入口 */
.why__item {
  display: flex; flex-direction: column; align-items: center;
  text-align: center; color: inherit;
  padding: 30px 22px 26px; border-radius: var(--radius);
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.07);
  transition: background .25s ease, border-color .25s ease, transform .25s ease;
}
.why__item:hover {
  background: rgba(255,255,255,0.07);
  border-color: rgba(0,86,81,0.55);
  transform: translateY(-6px);
}
.why__item:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.why__icon { font-size: 34px; margin-bottom: 14px; }
.why__title { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.why__desc { color: rgba(255,255,255,0.65); font-size: 14px; }
.why__more {
  display: inline-flex; align-items: center; gap: 6px;
  margin-top: auto; padding-top: 16px;
  font-size: 13.5px; font-weight: 600;
  color: rgba(255,255,255,0.5); transition: color .25s ease;
}
.why__more .why__arrow { transition: transform .25s ease; }
.why__item:hover .why__more { color: var(--accent); }
.why__item:hover .why__more .why__arrow { transform: translateX(4px); }

/* ===== 案例（仅二级页面使用：案例库 /cases、详情 /case） ===== */
.cases { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.case {
  position: relative; border-radius: var(--radius); overflow: hidden;
  min-height: 260px; background: linear-gradient(135deg, #1c1c1e, #2c2c2e);
  background-size: cover; background-position: center;
  display: flex; align-items: flex-end;
}
.case img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.case__cap {
  position: relative; z-index: 2; width: 100%;
  padding: 20px; color: #fff;
  background: linear-gradient(0deg, rgba(0,0,0,0.6), transparent);
  font-weight: 600; font-size: 17px;
}

/* ===== 关于 ===== */
.band--dark { background: #0a0a0a; }
.about { max-width: var(--maxw); margin: 0 auto; display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.about__media { min-height: 380px; border-radius: var(--radius); background: linear-gradient(135deg, #113533, #0a0a0a); background-size: cover; background-position: center; }
.about__media img { width: 100%; height: 100%; object-fit: cover; border-radius: var(--radius); }
.about__desc { color: rgba(255,255,255,0.72); font-size: 16px; margin-top: 16px; }

/* ===== 预约 ===== */
.booking { max-width: 760px; }
.booking__form { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { display: flex; flex-direction: column; gap: 8px; }
.field--full { grid-column: 1 / -1; }
.field label { font-size: 14px; color: var(--ink-soft); font-weight: 600; }
.field input, .field select, .field textarea {
  font-family: inherit; font-size: 15px; color: var(--ink);
  padding: 13px 16px; border: 1px solid var(--line); border-radius: 12px;
  background: var(--bg-soft); transition: border-color 0.2s, background 0.2s;
}
.field input:focus, .field select:focus, .field textarea:focus {
  border-color: var(--accent); background: #fff; outline: none;
}
.booking__form .btn { grid-column: 1 / -1; justify-self: start; }
.booking__hint { grid-column: 1 / -1; color: var(--accent); font-weight: 600; min-height: 20px; }

/* ===== 页脚 ===== */
.footer { background: var(--bg-soft); padding: 64px 22px 32px; }
.footer__grid { max-width: var(--maxw); margin: 0 auto; display: grid; grid-template-columns: 1.5fr 1.3fr 1fr 1fr; gap: 36px; }
.footer__logo { font-size: 20px; font-weight: 700; color: var(--accent); }
.footer__slogan { color: var(--ink-soft); margin-top: 8px; font-size: 14px; }
.footer__col h4 { font-size: 14px; margin-bottom: 12px; }
.footer__col p { color: var(--ink-soft); font-size: 14px; margin-bottom: 6px; }
.footer__bar {
  max-width: var(--maxw); margin: 40px auto 0; padding-top: 22px;
  border-top: 1px solid var(--line);
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  color: var(--ink-soft); font-size: 13px;
}
.footer__note { max-width: 520px; }
.footer__beian a { color: var(--ink-soft); text-decoration: none; }
.footer__beian a:hover { color: var(--accent); text-decoration: underline; }

/* ===== 响应式 ===== */
@media (max-width: 900px) {
  .svcs { grid-template-columns: 1fr; }
  .svc { aspect-ratio: 3 / 4; }
  .why { grid-template-columns: repeat(2, 1fr); }
  .about { grid-template-columns: 1fr; gap: 32px; }
  .cases { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .footer__grid > div:first-child { grid-column: 1 / -1; }
}
@media (max-width: 640px) {
  .nav__links { display: none; }
  .nav__links.open {
    display: flex; flex-direction: column; gap: 0;
    position: absolute; top: 56px; left: 0; right: 0;
    background: #fff; border-bottom: 1px solid var(--line); padding: 8px 22px;
  }
  .nav__links.open a { padding: 12px 0; border-bottom: 1px solid var(--line); }
  .nav__burger { display: block; margin-left: auto; }
  .nav__cta { display: none; }
  .section { padding: 64px 18px; }
  .band { padding: 64px 18px; }
  .booking__form { grid-template-columns: 1fr; }
}

/* ===== 小程序二维码浮动条（贴屏幕侧边垂直居中，滚动时始终固定） ===== */
.mini-qr {
  position: fixed;
  top: 50%;
  left: 0;
  transform: translateY(-50%);
  z-index: 90;              /* 低于导航（100）：不遮挡顶部菜单 */
  display: flex;
  align-items: flex-start;
}
.mini-qr--right { left: auto; right: 0; }

/* hidden 必须真的隐藏（面板/标签自身有 display 声明，会盖掉浏览器默认样式） */
.mini-qr__panel[hidden],
.mini-qr__tab[hidden] { display: none !important; }

/* —— 展开态：二维码卡片 —— */
.mini-qr__panel {
  position: relative;
  width: 148px;
  padding: 12px 12px 13px;
  background: #fff;
  border: 1px solid var(--line);
  border-left: 0;
  border-radius: 0 16px 16px 0;
  box-shadow: 0 16px 36px -18px rgba(0, 0, 0, .38), 0 2px 8px -4px rgba(0, 0, 0, .1);
  text-align: center;
  animation: miniQrIn .22s ease both;
}
.mini-qr--right .mini-qr__panel {
  border-left: 1px solid var(--line);
  border-right: 0;
  border-radius: 16px 0 0 16px;
  animation-name: miniQrInRight;
}
/* 顶部品牌色细条，作为卡片视觉锚点 */
.mini-qr__panel::before {
  content: '';
  position: absolute; top: 0; left: 12px; right: 12px; height: 3px;
  border-radius: 0 0 3px 3px;
  background: var(--accent);
}
.mini-qr__img {
  width: 124px; height: 124px;
  margin: 6px auto 0;
  border-radius: 10px;
  background: var(--bg-soft);
  object-fit: contain;
}
.mini-qr__title { margin: 10px 0 0; font-size: 13px; font-weight: 700; color: var(--ink); }
.mini-qr__desc { margin: 3px 0 0; font-size: 11px; line-height: 1.45; color: var(--ink-soft); }

.mini-qr__hide {
  position: absolute; top: 7px; right: 7px;
  width: 24px; height: 24px;
  display: grid; place-items: center;
  padding: 0; line-height: 0; cursor: pointer;
  border: 0; border-radius: 50%;
  background: rgba(0, 0, 0, .055); color: var(--ink-soft);
  transition: background .18s ease, color .18s ease;
}
.mini-qr__hide:hover { background: rgba(0, 0, 0, .12); color: var(--ink); }
.mini-qr--right .mini-qr__hide { right: auto; left: 7px; }
.mini-qr--right .mini-qr__hide svg { transform: rotate(180deg); }

/* —— 收起态：贴边小标签（点它展开） —— */
.mini-qr__tab {
  display: flex; flex-direction: column; align-items: center; gap: 7px;
  width: 44px; padding: 13px 0;
  background: #fff;
  border: 1px solid var(--line);
  border-left: 0;
  border-radius: 0 14px 14px 0;
  box-shadow: 0 14px 30px -18px rgba(0, 0, 0, .34);
  color: var(--accent); cursor: pointer;
  transition: background .18s ease;
  animation: miniQrIn .22s ease both;
}
.mini-qr__tab:hover { background: rgba(0, 86, 81, .06); }
.mini-qr--right .mini-qr__tab {
  border-left: 1px solid var(--line);
  border-right: 0;
  border-radius: 14px 0 0 14px;
  animation-name: miniQrInRight;
}
.mini-qr__text {
  writing-mode: vertical-rl;
  font-size: 12px; font-weight: 700; letter-spacing: 2px;
}
.mini-qr__chev { opacity: .5; }
.mini-qr--right .mini-qr__chev { transform: rotate(180deg); }

@keyframes miniQrIn {
  from { opacity: 0; transform: translateX(-8px); }
  to { opacity: 1; transform: translateX(0); }
}
@keyframes miniQrInRight {
  from { opacity: 0; transform: translateX(8px); }
  to { opacity: 1; transform: translateX(0); }
}

@media (prefers-reduced-motion: reduce) {
  .mini-qr__panel, .mini-qr__tab { animation: none; }
}

/* 窄屏：卡片整体缩小（初始展开/收起由 JS 按屏幕宽度决定） */
@media (max-width: 720px) {
  .mini-qr__panel { width: 132px; padding: 10px 10px 11px; }
  .mini-qr__img { width: 108px; height: 108px; margin-top: 4px; }
  .mini-qr__title { font-size: 12px; margin-top: 8px; }
  .mini-qr__desc { font-size: 10.5px; }
  .mini-qr__hide { top: 6px; right: 6px; width: 26px; height: 26px; }
  .mini-qr--right .mini-qr__hide { right: auto; left: 6px; }
}