/* ===== 基础变量 ===== */
:root {
  --red: #c8342b;
  --red-dark: #a5261f;
  --gold: #e8b45a;
  --ink: #23201d;
  --gray-1: #5b534c;
  --gray-2: #8b8179;
  --line: #ece5dd;
  --bg: #fffdfa;
  --bg-soft: #faf5ee;
  --radius: 16px;
  --shadow: 0 10px 30px rgba(35, 32, 29, .08);
  --shadow-lg: 0 18px 48px rgba(35, 32, 29, .14);
  --max-w: 1160px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 76px; }

body {
  margin: 0;
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

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

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

h1, h2, h3, h4 { margin: 0; line-height: 1.35; font-weight: 700; }

p { margin: 0; }

.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 导航 ===== */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  background: rgba(255, 253, 250, .82);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: box-shadow .3s, border-color .3s, background .3s;
}

.nav.is-stuck {
  border-color: var(--line);
  box-shadow: 0 6px 20px rgba(35, 32, 29, .06);
}

.nav__inner {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand { display: flex; align-items: center; gap: 10px; }

/* App 图标 Logo：iOS 圆角方块风格，38px 适配 72px 导航栏 */
.brand__logo {
  width: 38px; height: 38px;
  flex: 0 0 auto;
  border-radius: 9px;
  object-fit: cover;
  box-shadow: 0 3px 10px rgba(35, 32, 29, .22), 0 0 0 1px rgba(35, 32, 29, .08);
}

.brand__logo--footer { width: 44px; height: 44px; border-radius: 10px; }

.brand__text { display: flex; flex-direction: column; line-height: 1.15; }
.brand__text strong { font-size: 18px; letter-spacing: 1px; }
.brand__text em { font-size: 11px; font-style: normal; color: var(--gray-2); letter-spacing: 2px; }

.nav__menu { display: flex; align-items: center; gap: 6px; }

.nav__link {
  position: relative;
  padding: 8px 14px;
  font-size: 15px;
  color: var(--gray-1);
  border-radius: 10px;
  transition: color .25s, background .25s;
}

.nav__link:hover { color: var(--red); background: rgba(200, 52, 43, .06); }

.nav__link.is-active { color: var(--red); font-weight: 600; }

.nav__link.is-active::after {
  content: "";
  position: absolute;
  left: 14px; right: 14px; bottom: 2px;
  height: 2px; border-radius: 2px;
  background: var(--red);
}

.nav__toggle {
  display: none;
  width: 42px; height: 42px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  cursor: pointer;
  padding: 0;
}

.nav__toggle span {
  display: block;
  width: 18px; height: 2px;
  margin: 3px auto;
  background: var(--ink);
  border-radius: 2px;
  transition: transform .3s, opacity .3s;
}

.nav__toggle.is-open span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.nav__toggle.is-open span:nth-child(2) { opacity: 0; }
.nav__toggle.is-open span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

/* ===== 首屏 ===== */
.hero {
  position: relative;
  padding: 140px 0 90px;
  background:
    radial-gradient(900px 460px at 82% 8%, rgba(232, 180, 90, .22), transparent 60%),
    radial-gradient(760px 420px at 8% 0%, rgba(200, 52, 43, .12), transparent 62%),
    var(--bg);
  overflow: hidden;
}

.hero__deco {
  position: absolute;
  right: -140px; bottom: -180px;
  width: 520px; height: 520px;
  border-radius: 50%;
  border: 60px solid rgba(200, 52, 43, .05);
  pointer-events: none;
}

.hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 56px;
  align-items: center;
}

.hero__badge {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 999px;
  background: rgba(200, 52, 43, .1);
  color: var(--red);
  font-size: 13px;
  letter-spacing: 2px;
}

.hero__title {
  margin: 20px 0 18px;
  font-size: clamp(32px, 4.6vw, 52px);
  letter-spacing: 1px;
}

.hero__title .hl {
  color: var(--red);
  background: linear-gradient(180deg, transparent 68%, rgba(232, 180, 90, .45) 68%);
}

.hero__desc {
  max-width: 540px;
  color: var(--gray-1);
  font-size: 16px;
}

.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin: 30px 0 38px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 148px;
  padding: 13px 26px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  transition: transform .25s, box-shadow .25s, background .25s, color .25s;
}

.btn--primary {
  background: linear-gradient(135deg, var(--red), var(--red-dark));
  color: #fff;
  box-shadow: 0 10px 24px rgba(200, 52, 43, .3);
}

.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 14px 30px rgba(200, 52, 43, .38); }

.btn--ghost {
  border: 1px solid rgba(200, 52, 43, .35);
  color: var(--red);
  background: #fff;
}

.btn--ghost:hover { background: rgba(200, 52, 43, .06); transform: translateY(-2px); }

.hero__stats {
  display: flex;
  gap: 44px;
  margin: 0; padding: 0;
  list-style: none;
}

.hero__stats li { display: flex; flex-direction: column; }
.hero__stats strong { font-size: 30px; color: var(--red); line-height: 1.2; }
.hero__stats span { font-size: 13px; color: var(--gray-2); }

/* 视觉区 2×2 铺图构图：限宽居中，四张品类卡片等分两行两列 */
.hero__visual {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  grid-template-rows: repeat(2, 1fr);
  gap: 16px;
  height: 400px;
  width: min(100%, 480px);
  margin: 0 auto;
}

.hero__ring {
  position: absolute;
  inset: 24px;
  border-radius: 50%;
  border: 1px dashed rgba(200, 52, 43, .18);
}

.hero__card {
  position: relative;
  min-height: 0;
  border-radius: 20px;
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow-lg);
  animation: float 6s ease-in-out infinite;
}

.hero__card img { width: 100%; height: 100%; object-fit: cover; }

.hero__card span {
  position: absolute;
  left: 12px; bottom: 12px;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(35, 32, 29, .62);
  color: #fff;
  font-size: 12px;
}

/* 卡片由网格自动排布，仅保留错开的浮动节奏 */
.hero__card--1 { animation-delay: 0s; }
.hero__card--2 { animation-delay: 1.4s; }
.hero__card--3 { animation-delay: 2.6s; }
.hero__card--4 { animation-delay: 3.8s; }

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

/* ===== 通用区块 ===== */
.section { padding: 92px 0; }

.section--soft { background: var(--bg-soft); }

.section__head { max-width: 720px; margin: 0 auto 52px; text-align: center; }

.section__tag {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 3px;
  color: var(--gold);
  font-weight: 700;
}

.section__title {
  margin: 10px 0 14px;
  font-size: clamp(26px, 3vw, 34px);
}

.section__title::after {
  content: "";
  display: block;
  width: 56px; height: 3px;
  margin: 16px auto 0;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--red), var(--gold));
}

.section__sub { color: var(--gray-1); font-size: 15px; }

.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s ease; }
.reveal.is-in { opacity: 1; transform: none; }

/* ===== 关于我们 ===== */
.about { display: grid; grid-template-columns: 1.15fr .85fr; gap: 46px; align-items: stretch; }

.about__text p { margin-bottom: 16px; color: var(--gray-1); font-size: 15.5px; }
.about__text strong { color: var(--ink); }

.about__values {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 30px;
}

.value { padding: 20px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); }
.value__icon { color: var(--gold); font-size: 16px; }
.value h4 { margin: 8px 0 6px; font-size: 16px; }
.value p { font-size: 13.5px; color: var(--gray-2); }

.about__panel {
  display: flex;
  flex-direction: column;
  padding: 32px;
  border-radius: 20px;
  background: linear-gradient(160deg, #fff, #fdf6ec);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.about__panel h3 { font-size: 18px; margin-bottom: 18px; }

.info { margin: 0; flex: 1; display: flex; flex-direction: column; }
.info > div { flex: 1; display: flex; align-items: center; gap: 14px; padding: 12px 0; border-bottom: 1px dashed var(--line); }
.info > div:last-of-type { border-bottom: none; }
.info dt { flex: 0 0 84px; color: var(--gray-2); font-size: 14px; }
.info dd { margin: 0; font-size: 14.5px; font-weight: 600; }

/* ===== 业务卡片 ===== */
.cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .3s, box-shadow .3s;
}

.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }

.card__img { height: 190px; overflow: hidden; background: var(--bg-soft); }
.card__img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.card:hover .card__img img { transform: scale(1.06); }

.card__body { position: relative; padding: 20px 22px 24px; }

.card__icon {
  position: absolute;
  top: -28px; right: 18px;
  width: 52px; height: 52px;
  padding: 8px;
  border-radius: 14px;
  background: #fff;
  box-shadow: var(--shadow);
}

/* 品类色块：原先是 4 张纯色小图，改用 CSS 渲染，省去图片请求 */
.card__icon::before {
  content: '';
  display: block;
  width: 100%; height: 100%;
  border-radius: 8px;
  background: var(--cat-color, var(--gold));
}

.card__icon--fresh  { --cat-color: #e7585a; }  /* 生鲜 */
.card__icon--liquor { --cat-color: #7e5c3a; }  /* 酒水 */
.card__icon--food   { --cat-color: #d67a30; }  /* 食品 */
.card__icon--drink  { --cat-color: #2e9e5b; }  /* 饮料 */

.card__body h3 { font-size: 18px; margin-bottom: 8px; }
.card__body p { font-size: 14px; color: var(--gray-2); }

/* ===== 联系我们 ===== */
.contact { display: grid; grid-template-columns: 1.05fr .95fr; gap: 32px; }

.contact__info {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.contact__item {
  display: flex;
  gap: 14px;
  padding: 22px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.contact__icon {
  flex: 0 0 38px;
  height: 38px;
  display: grid; place-items: center;
  border-radius: 12px;
  background: rgba(200, 52, 43, .1);
  color: var(--red);
  font-size: 17px;
}

.contact__item h4 { font-size: 15px; margin-bottom: 4px; }
.contact__item p { font-size: 14px; color: var(--gray-2); }

.contact__tip {
  padding: 32px;
  border-radius: 20px;
  background: linear-gradient(160deg, var(--red), var(--red-dark));
  color: #fff;
  box-shadow: 0 16px 36px rgba(200, 52, 43, .26);
}

.contact__tip h3 { font-size: 19px; margin-bottom: 14px; }
.contact__tip p { font-size: 14.5px; opacity: .94; }

.contact__warn {
  margin-top: 16px !important;
  padding: 12px 14px;
  border-radius: 12px;
  background: rgba(255, 255, 255, .16);
  font-size: 13px !important;
}

/* ===== 页脚 ===== */
.footer {
  padding: 46px 0 30px;
  background: #241f1c;
  color: #d9d2cb;
}

.footer__inner { display: flex; flex-direction: column; align-items: center; gap: 18px; text-align: center; }

.footer__brand { display: flex; align-items: center; gap: 12px; }
.footer__brand strong { color: #fff; font-size: 16px; }
.footer__brand p { font-size: 13px; opacity: .7; }

.footer__links { display: flex; flex-wrap: wrap; justify-content: center; gap: 22px; font-size: 14px; }
.footer__links a:hover { color: var(--gold); }

.footer__copy { font-size: 12.5px; opacity: .55; }

/* ===== 备案信息 ===== */
.footer__beian {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center;
  gap: 6px 16px;
  opacity: .82;
}
.footer__beian a {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.footer__beian a:hover { color: var(--gold); text-decoration: none; }
.footer__beian img { width: 16px; height: 16px; margin-right: 4px; vertical-align: -3px; }

/* ===== 返回顶部 ===== */
.to-top {
  position: fixed;
  right: 26px; bottom: 26px;
  z-index: 90;
  width: 44px; height: 44px;
  border: none;
  border-radius: 50%;
  background: var(--red);
  color: #fff;
  font-size: 18px;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity .3s, transform .3s;
  box-shadow: 0 10px 24px rgba(200, 52, 43, .3);
}

.to-top.is-show { opacity: 1; pointer-events: auto; transform: none; }

/* ===== 响应式 ===== */
@media (max-width: 960px) {
  .hero__inner { grid-template-columns: 1fr; gap: 36px; }
  /* 单列下视觉区保持 480×400 的原始构图（高度收窄会让大卡片互相重叠） */
  .hero { padding: 108px 0 64px; }
  .about { grid-template-columns: 1fr; }
  .cards { grid-template-columns: repeat(2, 1fr); }
  .contact { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .nav__toggle { display: block; }

  .nav__menu {
    position: absolute;
    top: 72px; left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 12px 24px 20px;
    background: rgba(255, 253, 250, .98);
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow);
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: opacity .25s, transform .25s;
  }

  .nav__menu.is-open { transform: none; opacity: 1; pointer-events: auto; }
  .nav__link { padding: 12px 8px; border-radius: 8px; }
  .nav__link.is-active::after { display: none; }

  .section { padding: 64px 0; }
  .cards { grid-template-columns: 1fr; }
  .about__values { grid-template-columns: 1fr; }
  .contact__info { grid-template-columns: 1fr; }
  .hero__stats { gap: 26px; }
  .hero__visual { height: 320px; width: min(100%, 400px); gap: 12px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero__card { animation: none; }
  .reveal { transition: none; opacity: 1; transform: none; }
}