/* 景区云导览 · 单页官网 */
:root {
  --ink: #12352c;
  --ink-soft: #3d5f54;
  --brand: #0a8f6a;
  --brand-deep: #066b4f;
  --mint: #e7f7f0;
  --foam: #f4fbf7;
  --line: rgba(10, 92, 68, 0.12);
  --sand: #f0ebe1;
  --accent: #c45c26;
  --max: 1120px;
  --font-display: "Microsoft YaHei", "微软雅黑", sans-serif;
  --font-body: "Microsoft YaHei", "微软雅黑", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--foam);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.wrap { width: min(var(--max), calc(100% - 40px)); margin: 0 auto; }

/* —— Nav —— */
.site-nav {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  display: grid;
  grid-template-columns: 1fr min(var(--max), calc(100% - 40px)) 1fr;
  align-items: center;
  padding: 14px 0;
  background: #E2EFEA;
  box-shadow: 0 1px 0 rgba(6, 107, 79, 0.08);
}
.nav-brand { grid-column: 2; grid-row: 1; justify-self: start; }
.nav-actions { grid-column: 2; grid-row: 1; justify-self: end; }
.site-nav.is-solid {
  background: #E2EFEA;
  box-shadow: 0 1px 0 rgba(6, 107, 79, 0.12);
}
.nav-brand {
  display: inline-flex; align-items: center; gap: 12px;
  font-family: var(--font-display);
  font-weight: 700; font-size: 1.05rem; letter-spacing: 0.08em;
  color: var(--brand-deep);
}
.nav-mark {
  width: 36px; height: 36px; border-radius: 10px; flex: none;
  background: linear-gradient(145deg, #0a9b73, #12c48a);
  position: relative;
}
.nav-mark::before {
  content: ""; position: absolute; inset: 9px;
  border: 2px solid rgba(255,255,255,.95);
  border-radius: 50%;
  border-top-color: transparent; border-left-color: transparent;
  transform: rotate(-22deg);
}
.nav-actions { display: flex; align-items: center; gap: 10px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 42px; padding: 0 18px;
  font-size: 0.92rem; font-weight: 600;
  border-radius: 8px; border: 1px solid transparent;
  transition: transform .2s ease, background .2s ease, color .2s ease, border-color .2s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-ghost {
  background: transparent; color: var(--brand-deep);
  border-color: rgba(6, 107, 79, 0.28);
}
.btn-ghost:hover { background: rgba(10, 143, 106, 0.08); }
.btn-solid {
  background: var(--brand-deep); color: #fff;
}
.btn-solid:hover { background: var(--brand); }
.btn-lg { min-height: 50px; padding: 0 26px; font-size: 1rem; }

/* —— Hero —— */
.hero {
  position: relative;
  min-height: 66.67vh;
  min-height: 66.67dvh;
  display: flex;
  align-items: center;
  overflow: hidden;
  color: #fff;
}
.hero-visual {
  position: absolute; inset: 0; z-index: 0;
  background:
    linear-gradient(105deg, rgba(6, 50, 38, 0.82) 0%, rgba(6, 70, 52, 0.55) 42%, rgba(8, 90, 68, 0.28) 100%),
    radial-gradient(ellipse 80% 60% at 70% 40%, rgba(18, 196, 138, 0.35), transparent 55%),
    linear-gradient(160deg, #0a5c44 0%, #0d7a5c 38%, #1a9b72 70%, #c8e6d8 100%);
}
.hero-visual::after {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,.55), transparent 85%);
  opacity: .55;
  animation: gridDrift 28s linear infinite;
}
@keyframes gridDrift {
  from { background-position: 0 0, 0 0; }
  to { background-position: 56px 28px, 56px 28px; }
}
.hero-inner {
  position: relative; z-index: 1;
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  padding: 92px 0 36px;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  align-items: center;
  gap: 28px;
  animation: riseIn .9s cubic-bezier(.2,.8,.25,1) both;
}
.hero-map { width: 100%; min-width: 0; display: flex; justify-content: center; overflow: hidden; }
.hero-map svg { width: 92%; max-width: 100%; height: auto; max-height: 44vh; display: block; overflow: hidden; }
.cn-land {
  fill: rgba(255,255,255,.16);
  stroke: rgba(255,255,255,.88);
  stroke-width: 1.2;
  stroke-linejoin: round;
}
.cn-pin .dot {
  fill: #ffe08a;
  stroke: #fff;
  stroke-width: 1.6;
}
.cn-pin .ring {
  fill: none;
  stroke: #ffe08a;
  stroke-width: 2;
}
.cn-pin text {
  fill: #fff;
  font-size: 22px;
  font-weight: 700;
  font-family: "Microsoft YaHei", "微软雅黑", sans-serif;
  paint-order: stroke fill;
  stroke: rgba(6, 50, 38, 0.72);
  stroke-width: 4px;
  stroke-linejoin: round;
}
@keyframes riseIn {
  from { opacity: 0; transform: translateY(28px); }
  to { opacity: 1; transform: none; }
}
.hero-brand {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1.15;
  margin-bottom: 18px;
}
.hero-title {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.8vw, 1.85rem);
  font-weight: 600;
  letter-spacing: 0.04em;
  max-width: 16em;
  margin-bottom: 14px;
  color: rgba(255,255,255,.94);
}
.hero-lead {
  max-width: 28em;
  font-size: 1.02rem;
  color: rgba(255,255,255,.78);
  margin-bottom: 28px;
}
.hero-ctas { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-ctas .btn-solid { background: #fff; color: var(--brand-deep); }
.hero-ctas .btn-solid:hover { background: var(--mint); }
.hero-ctas .btn-ghost { color: #fff; border-color: rgba(255,255,255,.4); }
.hero-ctas .btn-ghost:hover { background: rgba(255,255,255,.1); }

/* —— Sections —— */
.section { padding: clamp(64px, 10vw, 104px) 0; }
.section-kicker {
  font-size: 0.78rem; letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--brand); font-weight: 600; margin-bottom: 10px;
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3.5vw, 2.35rem);
  font-weight: 700; letter-spacing: 0.03em;
  line-height: 1.25; margin-bottom: 12px;
}
.section-desc {
  max-width: 36em; color: var(--ink-soft); font-size: 1.02rem; margin-bottom: 40px;
}

.feat-band {
  background:
    linear-gradient(180deg, var(--foam) 0%, var(--mint) 48%, var(--foam) 100%);
}
.feat-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
}
.feat-item {
  padding: 28px 22px 28px 0;
  border-bottom: 1px solid var(--line);
  animation: riseIn .8s cubic-bezier(.2,.8,.25,1) both;
}
.feat-item:nth-child(1) { animation-delay: .05s; }
.feat-item:nth-child(2) { animation-delay: .12s; }
.feat-item:nth-child(3) { animation-delay: .18s; }
.feat-item:nth-child(4) { animation-delay: .24s; }
.feat-item:nth-child(5) { animation-delay: .3s; }
.feat-item:nth-child(6) { animation-delay: .36s; }
.feat-num {
  display: block; font-family: var(--font-display);
  font-size: 0.85rem; color: var(--brand); letter-spacing: 0.12em;
  margin-bottom: 10px;
}
.feat-item h3 {
  font-family: var(--font-display);
  font-size: 1.2rem; font-weight: 700; margin-bottom: 8px;
}
.feat-item p { color: var(--ink-soft); font-size: 0.95rem; max-width: 22em; }

.why-band { background: #fff; }
.why-list { display: grid; gap: 28px; max-width: 720px; }
.why-item {
  display: grid; grid-template-columns: 64px 1fr; gap: 18px; align-items: start;
}
.why-item i {
  font-family: var(--font-display); font-style: normal;
  font-size: 1.5rem; color: var(--brand); letter-spacing: 0.04em;
  line-height: 1.2;
}
.why-item strong {
  display: block; font-family: var(--font-display);
  font-size: 1.15rem; margin-bottom: 6px;
}
.why-item p { color: var(--ink-soft); }

.free-band {
  background:
    linear-gradient(135deg, #0a5c44 0%, #0d8160 55%, #149870 100%);
  color: #fff;
}
.free-band .section-kicker { color: rgba(255,255,255,.65); }
.free-band .section-title { color: #fff; }
.free-band .section-desc { color: rgba(255,255,255,.78); }
.free-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: end;
}
.free-points { list-style: none; display: grid; gap: 14px; }
.free-points li {
  padding-left: 22px; position: relative;
  font-size: 1.02rem; color: rgba(255,255,255,.9);
}
.free-points li::before {
  content: ""; position: absolute; left: 0; top: 0.55em;
  width: 8px; height: 8px; border-radius: 2px; background: #ffe8a3;
}
.free-note {
  padding: 22px 0 0;
  border-top: 1px solid rgba(255,255,255,.2);
  font-size: 0.92rem; color: rgba(255,255,255,.72); line-height: 1.7;
}
.free-cta .btn-solid { background: #fff; color: var(--brand-deep); }
.free-cta .btn-ghost { color: #fff; border-color: rgba(255,255,255,.4); margin-top: 12px; }

.live-band { background: var(--sand); }
.live-stat {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  font-weight: 700; color: var(--brand-deep);
  letter-spacing: 0.02em;
}
.live-stat span { font-size: 0.45em; margin-left: 6px; font-weight: 600; color: var(--ink-soft); }
.live-band p { margin-top: 10px; color: var(--ink-soft); max-width: 28em; }

.cta-band {
  text-align: center;
  background: var(--foam);
  padding-bottom: 88px;
}
.cta-band .section-title { margin-left: auto; margin-right: auto; }
.cta-band .section-desc { margin-left: auto; margin-right: auto; }
.cta-actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; }

.site-footer {
  padding: 28px 0 36px;
  border-top: 1px solid var(--line);
  background: #fff;
  text-align: center;
  font-size: 0.82rem; color: var(--ink-soft);
}
.site-footer a { color: var(--brand-deep); }
.site-footer a:hover { text-decoration: underline; }

.nav-logo { height: 40px; width: auto; max-width: 160px; object-fit: contain; display: block; }

.cases-band { background: #fff; padding: 28px 0 22px; }
.cases-band .wrap { overflow: hidden; }
.cases-band .section-kicker { margin-bottom: 4px; }
.cases-band .section-title { margin-bottom: 12px; font-size: clamp(1.35rem, 2.4vw, 1.7rem); }
.case-grid {
  display: flex;
  flex-wrap: nowrap;
  gap: 14px;
  width: max-content;
  padding-bottom: 4px;
}
.case-grid.is-marquee {
  animation: case-marquee var(--case-duration, 24s) linear infinite;
}
.case-grid.is-marquee:hover,
.case-grid.is-marquee:focus-within { animation-play-state: paused; }
@keyframes case-marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}
.case-card {
  flex: 0 0 auto;
  width: calc((min(1120px, 100vw - 40px) - 56px) / 5);
  display: flex;
  flex-direction: column;
  aspect-ratio: 1 / 1;
  background: #fff;
  border: 1px solid rgba(10, 92, 68, 0.28);
  border-radius: 12px;
  overflow: hidden;
  transition: transform .2s ease, box-shadow .2s ease;
}
.case-card:hover { transform: translateY(-3px); box-shadow: 0 10px 28px rgba(10,92,68,.12); }
.case-cover {
  flex: 1;
  min-height: 0;
  background: linear-gradient(145deg, #0a5c44, #12c48a);
  display: flex; align-items: center; justify-content: center;
}
.case-cover img { width: 100%; height: 100%; object-fit: cover; display: block; }
.case-fallback { color: #fff; font-family: var(--font-display); padding: 12px; text-align: center; }
.case-name {
  flex: none;
  padding: 8px 10px;
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

@media (max-width: 860px) {
  .hero { min-height: 0; overflow: visible; align-items: stretch; }
  .hero-inner { grid-template-columns: 1fr; gap: 18px; padding: 84px 0 28px; }
  .hero-copy { order: 1; }
  .hero-map { order: 2; }
  .hero-brand { font-size: 1.7rem; }
  .hero-title { font-size: 1.05rem; }
  .hero-lead { font-size: 0.9rem; margin-bottom: 16px; }
  .hero-map svg { max-height: 36vh; width: 80%; margin: 0 auto; }
  .feat-row { grid-template-columns: 1fr 1fr; }
  .free-grid { grid-template-columns: 1fr; gap: 28px; }
  .case-card { width: calc((100vw - 40px - 28px) / 2.4); }
}
@media (max-width: 560px) {
  .feat-row { grid-template-columns: 1fr; }
  .feat-item { padding-right: 0; }
  .why-item { grid-template-columns: 48px 1fr; gap: 12px; }
  .nav-brand span { font-size: 0.95rem; }
  .btn { padding: 0 14px; min-height: 40px; font-size: 0.88rem; }
  .case-card { width: calc((100vw - 40px - 14px) / 2); }
}