:root {
  --bg: #ffffff;
  --bg-soft: #f5f4f1;
  --ink: #141414;
  --ink-dim: #717067;
  --line: #e7e5df;
  --accent: #e8453c;
  --accent-soft: rgba(232, 69, 60, 0.1);
  --max: 1200px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: "Noto Sans SC", system-ui, -apple-system, sans-serif;
  font-weight: 400;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { display: block; }

/* ---------- 导航 ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px clamp(20px, 5vw, 56px);
  z-index: 50;
  transition: background 0.35s var(--ease), box-shadow 0.35s var(--ease), padding 0.35s var(--ease);
}
.nav.is-scrolled {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 var(--line);
  padding-top: 13px; padding-bottom: 13px;
}
.nav__brand {
  font-weight: 900;
  font-size: 20px;
  letter-spacing: 0.5px;
}
.nav__brand span { color: var(--accent); margin: 0 1px; }
.nav__links { display: flex; gap: 30px; }
.nav__links a {
  font-size: 15px; font-weight: 500; color: var(--ink-dim);
  position: relative; transition: color 0.3s var(--ease);
}
.nav__links a:hover { color: var(--ink); }
.nav__cta {
  border: 1.5px solid var(--accent);
  color: var(--accent);
  padding: 8px 22px;
  border-radius: 999px;
  font-size: 14px; font-weight: 700;
  transition: all 0.3s var(--ease);
}
.nav__cta:hover { background: var(--accent); color: #fff; }
.nav__toggle { display: none; background: none; border: none; color: var(--ink); font-size: 24px; cursor: pointer; }

/* ---------- 首屏 ---------- */
.hero {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: clamp(30px, 5vw, 70px);
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(120px, 16vh, 180px) clamp(20px, 5vw, 56px) clamp(60px, 9vw, 110px);
  min-height: 92vh;
}
.hero__eyebrow {
  font-size: 12px; letter-spacing: 3px; font-weight: 700;
  color: var(--accent); text-transform: uppercase;
}
.hero__title {
  font-family: "Noto Sans SC", sans-serif;
  font-weight: 900;
  font-size: clamp(52px, 8.5vw, 116px);
  line-height: 1.0;
  letter-spacing: -1px;
  margin-top: 22px;
}
.hero__title span { color: var(--accent); }
.hero__sub { margin-top: 24px; font-size: clamp(16px, 2vw, 20px); color: var(--ink-dim); font-weight: 500; }
.hero__actions { margin-top: 38px; display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  padding: 14px 34px; border-radius: 999px; font-size: 15px; font-weight: 700;
  transition: all 0.3s var(--ease); cursor: pointer;
}
.btn--solid { background: var(--accent); color: #fff; }
.btn--solid:hover { transform: translateY(-2px); box-shadow: 0 12px 28px var(--accent-soft); }
.btn--ghost { border: 1.5px solid var(--line); color: var(--ink); }
.btn--ghost:hover { border-color: var(--ink); }
.hero__media { position: relative; border-radius: 14px; overflow: hidden; aspect-ratio: 11 / 13; display: block; cursor: pointer; }
.hero__media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.8s var(--ease); }
.hero__media:hover img { transform: scale(1.04); }
.hero__badge {
  position: absolute; top: 16px; left: 16px;
  background: var(--accent); color: #fff;
  font-size: 11px; font-weight: 700; letter-spacing: 2px;
  padding: 6px 12px; border-radius: 999px;
}

/* ---------- 通用区块 ---------- */
.section__head { max-width: var(--max); margin: 0 auto; padding: 0 clamp(20px, 5vw, 56px); }
.section__kicker { font-size: 12px; letter-spacing: 3px; font-weight: 700; color: var(--accent); text-transform: uppercase; }
.section__title { font-weight: 900; font-size: clamp(30px, 4.5vw, 52px); letter-spacing: -0.5px; margin-top: 8px; }
.section__desc { color: var(--ink-dim); margin-top: 10px; font-size: 15px; font-weight: 500; }

.featured { padding: clamp(50px, 8vw, 90px) 0; background: var(--bg-soft); }

.work { padding: clamp(60px, 9vw, 110px) 0; }
.contact { padding: clamp(70px, 10vw, 120px) 0; background: var(--bg-soft); }

/* ---------- 精选大图网格 ---------- */
.featured__grid {
  max-width: var(--max); margin: 34px auto 0;
  padding: 0 clamp(20px, 5vw, 56px);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: 240px;
  gap: 16px;
}
.fc {
  position: relative; overflow: hidden; border-radius: 12px; cursor: pointer;
  background: var(--bg);
  opacity: 0; transform: translateY(18px);
  animation: rise 0.6s var(--ease) forwards;
}
@keyframes rise { to { opacity: 1; transform: translateY(0); } }
.fc--big { grid-column: span 2; grid-row: span 2; }
.fc img { width: 100%; height: 100%; object-fit: cover; background: var(--bg-soft); display: block; transition: transform 0.7s var(--ease); }
.fc:hover img { transform: scale(1.05); }
.fc__overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(0,0,0,0.72));
  display: flex; align-items: flex-end;
  padding: 20px;
}
.fc__title {
  display: inline-block;
  color: #fff; font-weight: 700; font-size: 17px; line-height: 1.35;
  padding: 9px 15px; border-radius: 14px;
  background: rgba(255,255,255,0.16);
  -webkit-backdrop-filter: blur(14px) saturate(180%);
  backdrop-filter: blur(14px) saturate(180%);
  border: 0.5px solid rgba(255,255,255,0.4);
  box-shadow: 0 4px 14px rgba(0,0,0,0.12), inset 0 1px 0 rgba(255,255,255,0.5);
  text-shadow: 0 1px 2px rgba(0,0,0,0.28);
}
.fc--big .fc__title { font-size: 26px; }
.fc__tag {
  position: absolute; top: 14px; left: 14px;
  background: rgba(255,255,255,0.18);
  -webkit-backdrop-filter: blur(14px) saturate(180%);
  backdrop-filter: blur(14px) saturate(180%);
  border: 0.5px solid rgba(255,255,255,0.45);
  box-shadow: 0 4px 14px rgba(0,0,0,0.12), inset 0 1px 0 rgba(255,255,255,0.6);
  color: #fff; text-shadow: 0 1px 2px rgba(0,0,0,0.28);
  font-size: 11px; font-weight: 700; letter-spacing: 1px;
  padding: 5px 11px; border-radius: 999px;
}

/* ---------- 地理专栏 ---------- */
.cities { padding: clamp(60px, 9vw, 110px) 0; }
.cities__grid {
  max-width: var(--max); margin: 36px auto 0;
  padding: 0 clamp(20px, 5vw, 56px);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.city { opacity: 0; transform: translateY(18px); animation: rise 0.6s var(--ease) forwards; text-decoration: none; color: inherit; display: block; cursor: pointer; }
.city__media {
  position: relative; aspect-ratio: 4 / 5; border-radius: 12px; overflow: hidden; cursor: pointer;
  background: var(--bg-soft);
}
.city__media img { width: 100%; height: 100%; object-fit: cover; background: var(--bg-soft); display: block; transition: transform 0.7s var(--ease); }
.city__media:hover img { transform: scale(1.05); }
.city__name {
  position: absolute; left: 18px; bottom: 16px; color: #fff; font-weight: 900; font-size: 30px; line-height: 1.1;
  text-shadow: 0 2px 14px rgba(0,0,0,0.45);
}
.city__name span { display: block; font-size: 12px; font-weight: 700; letter-spacing: 3px; opacity: 0.85; margin-top: 4px; }
.city__desc { margin-top: 16px; color: var(--ink-dim); font-size: 14px; font-weight: 500; min-height: 44px; }
.city__more { margin-top: 4px; display: inline-block; color: var(--accent); font-weight: 700; font-size: 14px; transition: gap 0.3s var(--ease); }
.city__more:hover { opacity: 0.75; }

/* ---------- 作品 / 城市分板 ---------- */
.cityboards { max-width: var(--max); margin: 30px auto 0; padding: 0 clamp(20px, 5vw, 56px); }
.cityboard { margin-top: 50px; scroll-margin-top: 84px; }
.cityboard:first-of-type { margin-top: 24px; }
.cityboard__head {
  display: flex; align-items: baseline; justify-content: space-between;
  margin-bottom: 22px; border-bottom: 1px solid var(--line); padding-bottom: 14px;
}
.cityboard__title { font-weight: 900; font-size: clamp(22px, 3vw, 32px); letter-spacing: -0.5px; }
.cityboard__title span { font-size: 12px; font-weight: 700; letter-spacing: 3px; color: var(--ink-dim); margin-left: 10px; }
.cityboard__more { color: var(--accent); font-weight: 700; font-size: 14px; transition: opacity 0.3s var(--ease); }
.cityboard__more:hover { opacity: 0.7; }
.cityboards .gallery { max-width: none; margin: 0; padding: 0; }

/* ---------- 筛选 ---------- */
.filters {
  max-width: var(--max); margin: 34px auto 0;
  padding: 0 clamp(20px, 5vw, 56px);
  display: flex; flex-wrap: wrap; gap: 10px;
}
.filter {
  background: transparent; border: 1.5px solid var(--line);
  color: var(--ink-dim); padding: 9px 22px; border-radius: 999px;
  font-size: 14px; font-weight: 500; font-family: inherit; cursor: pointer;
  transition: all 0.3s var(--ease);
}
.filter:hover { color: var(--ink); border-color: var(--ink); }
.filter.is-active { background: var(--ink); border-color: var(--ink); color: #fff; }

/* ---------- 作品画廊 ---------- */
.gallery {
  max-width: var(--max); margin: 38px auto 0;
  padding: 0 clamp(20px, 5vw, 56px);
  columns: 3; column-gap: 16px;
}
.card {
  position: relative; break-inside: avoid; margin-bottom: 16px;
  overflow: hidden; border-radius: 10px; cursor: pointer; background: var(--bg-soft);
  opacity: 0; transform: translateY(18px);
  animation: rise 0.6s var(--ease) forwards;
}
.card img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; background: var(--bg-soft); display: block; transition: transform 0.7s var(--ease); }
.card:hover img { transform: scale(1.05); }
.card__cap {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 26px 16px 14px; font-size: 13px; font-weight: 500; color: #fff;
  background: linear-gradient(transparent, rgba(0,0,0,0.72));
  opacity: 0; transform: translateY(8px); transition: all 0.4s var(--ease);
}
.card:hover .card__cap { opacity: 1; transform: translateY(0); }
.card__tag {
  position: absolute; top: 12px; left: 12px;
  font-size: 11px; font-weight: 700; letter-spacing: 1px;
  padding: 5px 11px; border-radius: 999px;
  background: rgba(255,255,255,0.18);
  -webkit-backdrop-filter: blur(14px) saturate(180%);
  backdrop-filter: blur(14px) saturate(180%);
  border: 0.5px solid rgba(255,255,255,0.45);
  box-shadow: 0 4px 14px rgba(0,0,0,0.12), inset 0 1px 0 rgba(255,255,255,0.6);
  color: #fff; text-shadow: 0 1px 2px rgba(0,0,0,0.28);
}

/* ---------- 人员专栏 ---------- */
.crew { padding: clamp(60px, 9vw, 110px) 0; }
.crew__grid {
  max-width: var(--max); margin: 36px auto 0;
  padding: 0 clamp(20px, 5vw, 56px);
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px;
}
.crew__card {
  opacity: 0; transform: translateY(18px); animation: rise 0.6s var(--ease) forwards;
  cursor: pointer; border-radius: 14px; overflow: hidden; background: var(--bg-soft);
}
.crew__card img {
  width: 100%; aspect-ratio: 4 / 3; object-fit: contain; background: #fff; display: block;
  transition: transform 0.5s var(--ease);
}
.crew__card:hover img { transform: scale(1.04); }
.crew__cap { padding: 14px 16px 18px; }
.crew__name { display: block; font-weight: 900; font-size: 17px; color: var(--ink); }
.crew__role { display: block; margin-top: 4px; font-size: 13px; color: var(--muted); }
.crew__empty { max-width: var(--max); margin: 30px auto 0; padding: 0 clamp(20px, 5vw, 56px); color: var(--muted); font-size: 15px; }

/* ---------- 活动 ---------- */
.events { padding: clamp(60px, 9vw, 110px) 0; background: var(--bg-soft); }
.events__grid {
  max-width: var(--max); margin: 36px auto 0;
  padding: 0 clamp(20px, 5vw, 56px);
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px;
}
.event {
  opacity: 0; transform: translateY(18px); animation: rise 0.6s var(--ease) forwards;
  background: #fff; border-radius: 16px; overflow: hidden; cursor: pointer;
  box-shadow: 0 6px 20px rgba(0,0,0,0.04);
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
}
.event:hover { transform: translateY(-4px); box-shadow: 0 16px 38px rgba(0,0,0,0.09); }
.event__media { position: relative; aspect-ratio: 16 / 10; overflow: hidden; background: var(--bg-soft); }
.event__media img { width: 100%; height: 100%; object-fit: cover; background: var(--bg-soft); display: block; transition: transform 0.7s var(--ease); }
.event:hover .event__media img { transform: scale(1.05); }
.event__date {
  position: absolute; top: 14px; left: 14px;
  background: rgba(255,255,255,0.18);
  -webkit-backdrop-filter: blur(14px) saturate(180%);
  backdrop-filter: blur(14px) saturate(180%);
  border: 0.5px solid rgba(255,255,255,0.45);
  box-shadow: 0 4px 14px rgba(0,0,0,0.12), inset 0 1px 0 rgba(255,255,255,0.6);
  color: #fff; text-shadow: 0 1px 2px rgba(0,0,0,0.28);
  font-size: 12px; font-weight: 700; letter-spacing: 1px;
  padding: 5px 11px; border-radius: 999px;
}
.event__body { padding: 18px 20px 22px; }
.event__title { font-weight: 900; font-size: 19px; letter-spacing: -0.3px; color: var(--ink); }
.event__place { margin-top: 8px; font-size: 13px; font-weight: 600; color: var(--accent); }
.event__desc { margin-top: 10px; font-size: 14px; color: var(--ink-dim); font-weight: 500; line-height: 1.65; }

/* 活动投稿小栏目 */
.event-submit {
  margin-top: 28px;
  display: flex; align-items: center; gap: 22px; flex-wrap: wrap;
  padding: 22px 26px;
  background: rgba(255,255,255,0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(255,255,255,0.6);
  border-radius: 20px;
  box-shadow: 0 18px 44px var(--shadow);
}
.event-submit__icon { font-size: 30px; line-height: 1; color: var(--accent); }
.event-submit__text { flex: 1; min-width: 220px; }
.event-submit__text h3 { font-size: 18px; font-weight: 900; color: var(--ink); letter-spacing: -0.3px; }
.event-submit__text p { margin-top: 6px; font-size: 14px; color: var(--ink-dim); font-weight: 500; line-height: 1.6; }
.event-submit__btn { flex: none; white-space: nowrap; }

/* ---------- 联系 ---------- */
.contact__inner { max-width: var(--max); margin: 0 auto; padding: 0 clamp(20px, 5vw, 56px); text-align: center; }
.contact__links { margin-top: 32px; display: flex; flex-direction: column; gap: 14px; align-items: center; }
.contact__link {
  border: 1.5px solid var(--line); padding: 14px 28px; border-radius: 999px;
  font-size: 15px; font-weight: 500; color: var(--ink-dim);
  transition: all 0.3s var(--ease); min-width: 290px;
}
.contact__link:hover { color: var(--ink); border-color: var(--accent); }
.contact__link[data-copy] { cursor: pointer; }
.contact__link[data-copy]:active { border-color: var(--accent); color: var(--accent); }

/* ---------- 页脚 ---------- */
.footer {
  text-align: center; padding: 44px 20px;
  border-top: 1px solid var(--line);
  color: var(--ink-dim); font-size: 13px; font-weight: 500;
}
.footer__soft { margin-top: 6px; color: var(--accent); letter-spacing: 2px; font-weight: 700; }

/* ---------- 灯箱 ---------- */
.lightbox {
  position: fixed; inset: 0; background: rgba(245,244,241,0.97);
  display: flex; align-items: center; justify-content: center; flex-direction: column;
  z-index: 100; opacity: 0; pointer-events: none;
  transition: opacity 0.35s var(--ease); padding: 24px;
}
.lightbox.is-open { opacity: 1; pointer-events: auto; }
.lightbox__img {
  max-width: 92vw; max-height: 82vh; border-radius: 8px;
  box-shadow: 0 30px 80px rgba(0,0,0,0.18);
  transform: scale(0.96); transition: transform 0.35s var(--ease);
}
.lightbox.is-open .lightbox__img { transform: scale(1); }
.lightbox__cap { margin-top: 18px; color: var(--ink); font-size: 15px; font-weight: 600; letter-spacing: 1px; }
.lightbox__close {
  position: absolute; top: 22px; right: 26px;
  background: none; border: none; color: var(--ink);
  font-size: 36px; cursor: pointer; line-height: 1;
}
.lightbox__nav {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 52px; height: 52px; border-radius: 50%; cursor: pointer;
  background: rgba(255,255,255,0.88); border: none; color: #111;
  font-size: 30px; line-height: 1; display: flex; align-items: center; justify-content: center;
  box-shadow: 0 8px 24px rgba(0,0,0,0.12); transition: background 0.25s var(--ease);
}
.lightbox__nav:hover { background: #fff; }
.lightbox__prev { left: 22px; }
.lightbox__next { right: 22px; }
.lightbox__count { position: absolute; bottom: 22px; color: var(--ink-dim); font-size: 13px; letter-spacing: 1px; }

.toast {
  position: fixed; left: 50%; bottom: 36px; transform: translateX(-50%) translateY(20px);
  background: #111; color: #fff; padding: 12px 22px; border-radius: 999px;
  font-size: 14px; font-weight: 600; letter-spacing: 0.5px;
  opacity: 0; pointer-events: none; z-index: 200; transition: all 0.3s var(--ease);
}
.toast.is-show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; min-height: auto; }
  .hero__media { order: -1; aspect-ratio: 16 / 11; }
  .featured__grid { grid-template-columns: repeat(2, 1fr); grid-auto-rows: 200px; }
  .fc--big { grid-column: span 2; grid-row: span 1; }
  .cities__grid { grid-template-columns: repeat(2, 1fr); }
  .crew__grid { grid-template-columns: repeat(2, 1fr); }
  .events__grid { grid-template-columns: repeat(2, 1fr); }
  .gallery { columns: 2; }
}
@media (max-width: 620px) {
  .nav__links {
    position: fixed; top: 0; right: 0; height: 100vh; width: 72%; max-width: 280px;
    background: #fff; flex-direction: column; justify-content: center; gap: 26px; padding: 40px;
    transform: translateX(100%); transition: transform 0.4s var(--ease);
    box-shadow: -20px 0 60px rgba(0,0,0,0.08);
  }
  .nav__links.is-open { transform: translateX(0); }
  .nav__cta { display: none; }
  .nav__toggle { display: block; z-index: 60; }
  .featured__grid { grid-template-columns: 1fr; grid-auto-rows: 200px; }
  .fc--big { grid-column: span 1; }
  .events__grid { grid-template-columns: 1fr; }
  .gallery { columns: 1; }
}

/* ---------- 每周投稿入口 ---------- */
.submit-banner{
  max-width: var(--max); margin: 36px auto 0; padding: 0 clamp(20px,5vw,56px);
  display: flex; align-items: center; gap: 28px; flex-wrap: wrap;
  background:#fff; border:1px solid var(--line); border-radius:20px;
  padding: 26px 28px;
  box-shadow: 0 14px 38px rgba(0,0,0,.05);
}
.submit-banner__qr{ width: 190px; height:190px; border-radius:16px; flex:none; object-fit:cover; background:var(--bg-soft); }
.submit-banner__text{ flex:1; min-width:220px; }
.submit-banner__kicker{ font-size:12px; letter-spacing:3px; font-weight:700; color:var(--accent); text-transform:uppercase; }
.submit-banner__title{ font-weight:900; font-size: clamp(22px,3vw,30px); letter-spacing:-.5px; margin-top:8px; }
.submit-banner__desc{ margin-top:10px; color:var(--ink-dim); font-size:14px; font-weight:500; line-height:1.7; }
@media (max-width:620px){
  .submit-banner{ justify-content:center; text-align:center; }
  .submit-banner__qr{ width:150px; height:150px; }
}

  font-size: 16px; color: var(--ink-dim); font-weight: 500; line-height: 1.9;
  max-width: 720px; margin: 0 auto;
}
/* ---------- 活动投稿作者署名 ---------- */
.event__author{
  position:absolute; left:14px; bottom:14px;
  background: rgba(17,17,17,.55); color:#fff;
  font-size:12px; font-weight:600; letter-spacing:.5px;
  padding:5px 11px; border-radius:999px;
  -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px);
  border:.5px solid rgba(255,255,255,.25);
}


.joinus{ padding: clamp(60px, 9vw, 110px) 0; background: var(--bg-soft); }
.joinus__inner{ max-width: var(--max); margin: 36px auto 0; padding: 0 clamp(20px,5vw,56px); }
/* ---------- 加入我们 海报横幅 ---------- */
.joinus-banner__img{ flex:0 0 clamp(180px,26%,280px); border-radius:16px; object-fit:cover; }
@media (max-width:620px){ .joinus-banner{ justify-content:center; text-align:center; } .joinus-banner__img{ width:100%; max-width:280px; } }



/* ---------- 活动投稿版权说明 ---------- */
.events__copyright{
  max-width: var(--max); margin: 26px auto 0; padding: 0 clamp(20px,5vw,56px);
  text-align: center; color: var(--muted); font-size: 12px; font-weight: 500; line-height: 1.7;
}

/* ---------- 光影地图 ---------- */
.mapsec{ padding: clamp(60px, 9vw, 110px) 0; background: var(--bg-soft); }
.mapsec__inner{ max-width: var(--max); margin: 36px auto 0; padding: 0 clamp(20px,5vw,56px); }
#mapContainer{ width:100%; height:420px; border-radius:18px; overflow:hidden; box-shadow:0 18px 44px rgba(0,0,0,.08); }
.mapsec__hint{ margin-top:12px; text-align:center; color:var(--muted); font-size:12px; font-weight:500; }
@media (max-width:620px){ #mapContainer{ height:330px; } }

/* ---------- 地图照片标记 ---------- */
.map-marker{ text-align:center; }
.map-marker img{ width:96px; height:64px; object-fit:cover; border-radius:8px; border:2px solid #fff; box-shadow:0 4px 12px rgba(0,0,0,.35); display:block; }
.map-marker em{ display:block; margin:3px auto 0; font-style:normal; font-size:12px; font-weight:700; color:#141414; background:rgba(255,255,255,.92); border-radius:999px; padding:2px 9px; width:max-content; }

/* ---------- 首屏 液态玻璃彩虹光晕 ---------- */
.hero{ position:relative; overflow:hidden; }
/* 让首屏文字/图浮在光晕之上 */