:root {
  --green: #1FAA70;
  --orange: #F28729;
  --ink: #17211C;
  --muted: #69756E;
  --canvas: #F7F8F6;
  --alt: #EFF1EA;
  --dark: #0C1210;
  --dark-ink: #EEF4EF;
  --dark-subtle: #8A9A91;
  --edge: rgba(23, 33, 28, .12);
  --edge-strong: rgba(23, 33, 28, .2);
  --wrap: 1120px;
  --gutter: clamp(20px, 5vw, 48px);
  --pad-y: clamp(56px, 7.5vw, 104px);
  --font: "PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-data: "DIN Alternate", "Bahnschrift", "Roboto Condensed", "Arial Narrow", sans-serif;
  --header-h: 62px;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.75;
  color: var(--ink);
  background: var(--canvas);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; }

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

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding-inline: var(--gutter);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  background: var(--green);
  color: #fff;
  padding: 10px 18px;
  border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

/* ---------- header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(247, 248, 246, .88);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--edge);
}

.header-inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 17px;
  font-weight: 600;
  letter-spacing: .04em;
  text-decoration: none;
}
.brand img { border-radius: 7px; }

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2.4vw, 30px);
  font-size: 15px;
}
.site-nav a {
  text-decoration: none;
  color: var(--muted);
  padding-block: 6px;
  border-bottom: 1px solid transparent;
  transition: color .18s ease, border-color .18s ease;
}
.site-nav a:hover { color: var(--ink); border-bottom-color: var(--green); }

.nav-cta {
  color: var(--ink) !important;
  border: 1px solid var(--edge-strong) !important;
  border-radius: 999px;
  padding: 5px 16px !important;
}
.nav-cta:hover { border-color: var(--green) !important; color: var(--green) !important; }

/* ---------- hero ---------- */

.hero {
  position: relative;
  overflow: hidden;
  background: var(--dark);
  color: var(--dark-ink);
  padding-block: clamp(64px, 9vw, 118px) clamp(72px, 10vw, 128px);
}

.hero .pulse {
  position: absolute;
  left: 0;
  right: 0;
  bottom: clamp(20px, 6vw, 64px);
  width: 100%;
  height: clamp(90px, 14vw, 160px);
  opacity: .3;
  pointer-events: none;
}
.hero .pulse path {
  fill: none;
  stroke: var(--green);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  vector-effect: non-scaling-stroke;
}

.hero-inner { position: relative; z-index: 1; }

.status {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 26px;
  padding: 5px 15px 5px 12px;
  border: 1px solid rgba(238, 244, 239, .18);
  border-radius: 999px;
  font-size: 14px;
  letter-spacing: .1em;
  color: var(--dark-subtle);
}
.status .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 0 rgba(31, 170, 112, .55);
  animation: breathe 3s ease-in-out infinite;
}
@keyframes breathe {
  0%, 100% { box-shadow: 0 0 0 0 rgba(31, 170, 112, .5); }
  50% { box-shadow: 0 0 0 7px rgba(31, 170, 112, 0); }
}
@media (prefers-reduced-motion: reduce) {
  .status .dot { animation: none; }
}

.hero h1 {
  margin: 0;
  font-size: clamp(42px, 8.4vw, 86px);
  line-height: 1.08;
  font-weight: 700;
  letter-spacing: .01em;
}

.hero .lead {
  max-width: 46ch;
  margin: 28px 0 0;
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.85;
  color: rgba(238, 244, 239, .8);
}

.hero .meta {
  margin: 34px 0 0;
  font-size: 14px;
  letter-spacing: .14em;
  color: var(--dark-subtle);
}

/* ---------- sections ---------- */

.band { padding-block: var(--pad-y); }
.band.alt { background: var(--alt); }

.eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 18px;
  font-size: 14px;
  letter-spacing: .16em;
  color: var(--muted);
}
.eyebrow .num {
  font-family: var(--font-data);
  font-size: 15px;
  letter-spacing: .06em;
  color: var(--orange);
}
.eyebrow .num::after {
  content: "";
  display: inline-block;
  width: 26px;
  height: 1px;
  margin-left: 12px;
  vertical-align: middle;
  background: var(--edge-strong);
}

h2 {
  margin: 0 0 40px;
  font-size: clamp(26px, 4vw, 40px);
  line-height: 1.35;
  font-weight: 600;
  letter-spacing: .01em;
  max-width: 30ch;
  text-wrap: balance;
}

h3 {
  margin: 0 0 10px;
  font-size: 19px;
  font-weight: 600;
  letter-spacing: .02em;
}

.two-col {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: clamp(20px, 4vw, 56px);
  max-width: 900px;
}
.two-col p { margin: 0; color: #33413A; }

/* cards */

.cards {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(272px, 1fr));
  gap: 1px;
  background: var(--edge);
  border: 1px solid var(--edge);
  border-radius: 20px;
  overflow: hidden;
}
.cards li {
  background: var(--canvas);
  padding: clamp(26px, 3vw, 38px) clamp(22px, 2.6vw, 32px);
  transition: background .2s ease;
}
.band.alt .cards li { background: #FAFAF6; }
.cards li:hover { background: #fff; }
.cards p {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
}
.cards h3 { position: relative; padding-left: 16px; }
.cards h3::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
}

/* steps */

.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--edge);
}
.steps li {
  display: flex;
  align-items: flex-start;
  gap: clamp(16px, 3vw, 40px);
  padding: clamp(22px, 2.8vw, 30px) 4px;
  border-bottom: 1px solid var(--edge);
}
.step-n {
  flex: none;
  width: 34px;
  font-family: var(--font-data);
  font-size: 22px;
  line-height: 1.5;
  color: var(--orange);
}
.steps h3 { margin-bottom: 6px; }
.steps p { margin: 0; color: var(--muted); max-width: 62ch; }

.note {
  margin: 36px 0 0;
  padding: 22px 26px;
  border-left: 2px solid var(--green);
  background: rgba(31, 170, 112, .05);
  font-size: 16px;
  color: #33413A;
  max-width: 74ch;
}

/* tabs */

.tabs {
  list-style: none;
  margin: 44px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
}
.tabs li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 20px 22px;
  background: #FAFAF6;
  border: 1px solid var(--edge);
  border-radius: 14px;
}
.tabs strong { font-size: 17px; font-weight: 600; }
.tabs span { font-size: 14px; color: var(--muted); }

/* 小程序码（待启用，样式先备好） */

.qr {
  margin: 40px 0 0;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 22px;
  background: #FAFAF6;
  border: 1px solid var(--edge);
  border-radius: 16px;
}
.qr img { width: 160px; height: 160px; }
.qr figcaption { font-size: 14px; color: var(--muted); }

/* contact */

.contact { background: var(--alt); }
.contact h2 { margin-bottom: 26px; }
.phone {
  margin: 0;
  font-family: var(--font-data);
  font-size: clamp(34px, 6.4vw, 58px);
  line-height: 1.2;
  letter-spacing: .04em;
}
.phone a {
  text-decoration: none;
  border-bottom: 2px solid rgba(31, 170, 112, .35);
  transition: border-color .2s ease;
}
.phone a:hover { border-bottom-color: var(--green); }
.phone-note { margin: 14px 0 0; color: var(--muted); font-size: 16px; }

/* footer */

.site-footer {
  background: var(--dark);
  color: var(--dark-subtle);
  padding-block: clamp(44px, 6vw, 68px);
  font-size: 15px;
}
.footer-inner p { margin: 0 0 8px; }
.footer-brand {
  color: var(--dark-ink);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: .06em;
  margin-bottom: 16px !important;
}
.beian {
  margin-top: 22px !important;
  padding-top: 20px;
  border-top: 1px solid rgba(238, 244, 239, .12);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  font-size: 14px;
}
.beian a {
  color: var(--dark-subtle);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}
/* 公安备案号（待启用，样式先备好）：国徽图标与文字同行 */
.beian .gongan {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.beian .gongan img { display: inline-block; }
.beian a:hover { color: var(--dark-ink); border-bottom-color: rgba(238, 244, 239, .4); }
.beian .copy { color: rgba(138, 154, 145, .75); }

/* responsive */

/* 宣传片：竖屏 9:16，宽屏左文右片，窄屏上下排 */
.video-wrap { display: flex; align-items: center; gap: 48px; }
.video-text { flex: 1; }
.video-text p:last-child { color: #33413A; }
.promo {
  width: 100%; max-width: 340px; aspect-ratio: 9 / 16;
  border-radius: 12px; background: var(--ink); flex-shrink: 0;
}

@media (max-width: 720px) {
  .video-wrap { flex-direction: column; align-items: stretch; gap: 24px; }
  .promo { margin-inline: auto; }
  body { font-size: 16px; }
  .hero .meta { letter-spacing: .06em; font-size: 13px; }
  .site-nav a:not(.nav-cta) { display: none; }
  h2 { max-width: none; }
  .cards { border-radius: 16px; }
}