@import url('https://fonts.googleapis.com/css2?family=Exo+2:wght@300;400;500;600;700&family=Orbitron:wght@400;500;600;700&display=swap');

:root {
  --mint: #b4fde1;
  --sky: #add8e6;
  --ink: #172620;
  --paper: #fbfffd;
  --line: 4px solid var(--ink);
  --line-3: 3px solid var(--ink);
  --r-lg: 24px;
  --r-md: 18px;
  --r-sm: 14px;
  --clay: inset -3px -4px 10px rgba(23, 38, 32, .10), inset 3px 3px 9px rgba(255, 255, 255, .9), 6px 8px 0 rgba(23, 38, 32, .13);
  --clay-sm: inset -2px -2px 6px rgba(23, 38, 32, .10), 3px 4px 0 rgba(23, 38, 32, .12);
  --spring: cubic-bezier(.34, 1.56, .64, 1);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: 'Exo 2', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', system-ui, sans-serif;
  font-size: 17px;
  line-height: 1.75;
  color: var(--ink);
  background:
    radial-gradient(1100px 560px at 88% -8%, #d8fff0 0%, rgba(216, 255, 240, 0) 62%),
    radial-gradient(900px 520px at 6% 108%, #d9edf8 0%, rgba(217, 237, 248, 0) 58%),
    linear-gradient(158deg, #ebfff7 0%, #f4fbff 46%, #e6fff5 100%);
  background-attachment: fixed;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }

h1, h2, h3 {
  font-family: 'Orbitron', 'Exo 2', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
  line-height: 1.22;
  margin: 0 0 .55em;
  letter-spacing: .01em;
}

/* ── 顶部细条 ─────────────────────────────── */
.topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 38px;
  z-index: 60;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  background: linear-gradient(90deg, var(--mint), var(--sky));
  border-bottom: 3px solid var(--ink);
}

.topbar-txt {
  margin: 0;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .34em;
}

.topbar-dots { display: flex; gap: 6px; margin: 0; }
.topbar-dots span {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ink);
  opacity: .45;
}

/* ── 左侧竖排导航 ─────────────────────────── */
.dock {
  position: fixed;
  top: 38px;
  bottom: 0;
  left: 0;
  width: 248px;
  z-index: 50;
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 18px 15px 20px;
  overflow-y: auto;
  background: linear-gradient(180deg, #eafff6 0%, #eaf7fd 58%, #e0faef 100%);
  border-right: var(--line);
}

.brand-mark {
  flex: 0 0 auto;
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  border: var(--line);
  border-radius: var(--r-md);
  background: linear-gradient(150deg, var(--mint), var(--sky));
  box-shadow: var(--clay);
  font-family: 'Orbitron', 'PingFang SC', sans-serif;
  font-size: 22px;
  font-weight: 700;
  text-decoration: none;
  transition: transform .22s var(--spring);
}

.brand-mark:hover { transform: translateY(-3px) rotate(-5deg); }
.brand-mark:active { transform: translateY(1px) scale(.96); }

.dock-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 46px;
  padding: 10px 13px;
  border: var(--line-3);
  border-radius: var(--r-md);
  background: #fffdf8;
  box-shadow: var(--clay-sm);
  text-decoration: none;
  font-size: 15.5px;
  font-weight: 600;
  transition: transform .2s var(--spring), box-shadow .2s ease-out, background .2s ease-out;
  animation: pop-in .5s var(--spring) both;
}

.nav-ico {
  flex: 0 0 auto;
  width: 14px;
  height: 14px;
  border: 3px solid var(--ink);
  border-radius: 6px;
  background: linear-gradient(140deg, var(--mint), var(--sky));
}

.nav-link:hover,
.nav-link.is-on {
  background: linear-gradient(140deg, var(--mint), #ddfff1);
  transform: translateY(-2px);
  box-shadow: inset -2px -2px 6px rgba(23, 38, 32, .14), 5px 9px 0 rgba(23, 38, 32, .16);
}

.nav-link:active {
  transform: translateY(2px);
  box-shadow: inset -1px -1px 5px rgba(23, 38, 32, .22);
}

.nav-cell:nth-child(2) .nav-link { animation-delay: .05s; }
.nav-cell:nth-child(3) .nav-link { animation-delay: .1s; }
.nav-cell:nth-child(4) .nav-link { animation-delay: .15s; }
.nav-cell:nth-child(5) .nav-link { animation-delay: .2s; }
.nav-cell:nth-child(6) .nav-link { animation-delay: .25s; }
.nav-cell:nth-child(7) .nav-link { animation-delay: .3s; }

/* ── 主舞台 ───────────────────────────────── */
.stage {
  margin-left: 248px;
  padding-top: 38px;
}

.hero {
  position: relative;
  overflow: hidden;
  min-height: 45vh;
  border-bottom: var(--line);
  background: linear-gradient(120deg, var(--mint), var(--sky));
}

.hero-art {
  position: relative;
  margin: 0;
  min-height: 45vh;
  display: flex;
  align-items: flex-end;
}

.hero-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}

.hero-art::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  background: linear-gradient(90deg, rgba(180, 253, 225, .95) 0%, rgba(180, 253, 225, .60) 48%, rgba(173, 216, 230, .18) 100%);
}

.hero-copy {
  position: relative;
  z-index: 3;
  margin: 0;
  padding: clamp(18px, 4vw, 46px);
  max-width: 840px;
  text-align: left;
}

.hero-brand {
  margin: 0 0 8px;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .36em;
  opacity: .78;
}

h1 {
  margin: 0;
  font-size: clamp(1.9rem, 5vw, 3rem);
  font-weight: 700;
  text-shadow: 0 2px 0 rgba(255, 255, 255, .55);
}

.wave {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 26px;
  z-index: 4;
  background: linear-gradient(90deg, var(--mint), var(--sky));
  clip-path: polygon(0 62%, 8% 22%, 21% 52%, 35% 14%, 50% 50%, 66% 18%, 82% 48%, 100% 12%, 100% 100%, 0 100%);
}

/* ── 正文 + 右侧栏 ────────────────────────── */
.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 308px;
  gap: clamp(16px, 2.4vw, 30px);
  align-items: start;
  max-width: 1200px;
  padding: clamp(20px, 3vw, 42px) clamp(16px, 3vw, 40px) 68px;
}

.content-col { min-width: 0; }

.content-col > article {
  position: relative;
  margin: 0 0 26px;
  padding: clamp(20px, 3vw, 34px);
  border: var(--line);
  border-radius: var(--r-lg);
  background: var(--paper);
  box-shadow: var(--clay);
  scroll-margin-top: 56px;
  animation: rise .55s var(--spring) both;
}

.content-col > article::before {
  content: "";
  position: absolute;
  top: 12px;
  left: 12px;
  right: 12px;
  height: 7px;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--mint), var(--sky));
  opacity: .8;
}

.content-col > article:nth-child(1) { animation-delay: .06s; }
.content-col > article:nth-child(2) { animation-delay: .12s; }
.content-col > article:nth-child(3) { animation-delay: .18s; }
.content-col > article:nth-child(4) { animation-delay: .24s; }
.content-col > article:nth-child(5) { animation-delay: .3s; }
.content-col > article:nth-child(6) { animation-delay: .36s; }
.content-col > article:nth-child(7) { animation-delay: .42s; }

.content-col h2 {
  margin-top: .2em;
  font-size: clamp(1.35rem, 2.8vw, 1.8rem);
}

.content-col h3 { font-size: 1.18rem; }
.content-col p, .content-col li { font-size: 17px; }
.content-col p { margin: 0 0 1em; }
.content-col ul, .content-col ol { padding-left: 1.35em; margin: 0 0 1em; }
.content-col li { margin: .3em 0; }

.content-col a {
  color: #0b6b52;
  font-weight: 600;
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.content-col blockquote,
.content-col figure {
  margin: 18px 0;
  padding: 14px 18px;
  border: var(--line-3);
  border-radius: var(--r-md);
  background: linear-gradient(140deg, #eafff6, #e8f6fd);
  box-shadow: var(--clay-sm);
}

.content-col blockquote { margin-left: 0; margin-right: 0; }
.content-col figure { padding: 12px; }
.content-col figure img { border-radius: var(--r-sm); border: var(--line-3); }

.content-col time {
  font-family: 'Orbitron', sans-serif;
  font-size: 13px;
  letter-spacing: .05em;
  padding: 3px 10px;
  border: 3px solid var(--ink);
  border-radius: 99px;
  background: #fffdf8;
  display: inline-block;
}

/* ── 右侧栏 ───────────────────────────────── */
.rail {
  position: sticky;
  top: 56px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.rail-card {
  padding: 18px 16px;
  border: var(--line);
  border-radius: var(--r-lg);
  background: linear-gradient(160deg, #eafff6, #e6f4fd);
  box-shadow: var(--clay);
}

.rail-h { font-size: 1.08rem; margin: .1em 0 .75em; }

.kicker {
  display: inline-block;
  margin: 0 0 4px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .28em;
  color: #0b6b52;
}

.rail-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.rail-link {
  display: flex;
  align-items: center;
  gap: 9px;
  min-height: 42px;
  padding: 7px 12px;
  border: var(--line-3);
  border-radius: var(--r-sm);
  background: #fffdf8;
  box-shadow: var(--clay-sm);
  text-decoration: none;
  font-size: 15px;
  font-weight: 600;
  transition: transform .18s var(--spring), background .18s ease-out;
}

.rail-dot {
  flex: 0 0 auto;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: linear-gradient(140deg, var(--mint), var(--sky));
  border: 2px solid var(--ink);
}

.rail-link:hover { transform: translateX(3px); background: linear-gradient(140deg, var(--mint), #e3fff3); }

.rail-card--blob {
  display: flex;
  gap: 10px;
  padding: 16px;
  min-height: 74px;
  align-items: center;
  justify-content: center;
}

.blob {
  width: 46px;
  height: 46px;
  border: var(--line-3);
  border-radius: 18px 22px 20px 24px;
  background: linear-gradient(140deg, var(--mint), var(--sky));
  box-shadow: var(--clay-sm);
  animation: wobble 4.4s ease-in-out infinite;
}

.blob--two { width: 32px; height: 32px; animation-delay: .9s; }

/* ── 页脚 ─────────────────────────────────── */
.foot {
  margin-left: 248px;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: 22px;
  padding: clamp(24px, 3vw, 46px) clamp(16px, 3vw, 40px) 28px;
  border-top: var(--line);
  background: linear-gradient(160deg, #e6fff4, #e3f3fc);
}

.foot > article {
  padding: 20px;
  border: var(--line);
  border-radius: var(--r-lg);
  background: var(--paper);
  box-shadow: var(--clay);
}

.foot-cta {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 22px 26px;
  background: linear-gradient(120deg, var(--mint), var(--sky));
}

.cta-txt {
  margin: 0;
  font-family: 'Orbitron', 'PingFang SC', sans-serif;
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: .12em;
}

.cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 10px 28px;
  border: var(--line);
  border-radius: 99px;
  background: #fffdf8;
  box-shadow: var(--clay);
  text-decoration: none;
  font-weight: 700;
  transition: transform .2s var(--spring);
}

.cta-btn:hover { transform: translateY(-3px); }
.cta-btn:active { transform: translateY(2px); }

.foot-logo {
  margin: 0 0 8px;
  font-family: 'Orbitron', 'PingFang SC', sans-serif;
  font-size: 1.12rem;
  font-weight: 700;
}

.foot-desc { margin: 0; font-size: 15.5px; line-height: 1.72; opacity: .85; }

.foot-list {
  list-style: none;
  margin: .45em 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.foot-link {
  display: flex;
  align-items: center;
  min-height: 42px;
  padding: 7px 11px;
  border: var(--line-3);
  border-radius: var(--r-sm);
  background: #fffdf8;
  box-shadow: var(--clay-sm);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  transition: transform .18s var(--spring), background .18s ease-out;
}

.foot-link:hover { transform: translateY(-2px); background: linear-gradient(140deg, var(--mint), #e6f4fd); }

.foot-bar {
  grid-column: 1 / -1;
  text-align: center;
  font-size: 14px;
  padding: 15px;
}

.foot-bar p { margin: 0; letter-spacing: .06em; }

@keyframes pop-in {
  from { opacity: 0; transform: translateY(10px) scale(.96); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes rise {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes wobble {
  0%, 100% { transform: rotate(0deg) translateY(0); }
  50% { transform: rotate(9deg) translateY(-4px); }
}

/* ── 窄屏 ─────────────────────────────────── */
@media (max-width: 900px) {
  .dock {
    top: auto;
    bottom: 0;
    right: 0;
    left: 0;
    width: auto;
    flex-direction: row;
    align-items: center;
    gap: 10px;
    padding: 8px 10px;
    overflow: visible;
    border-right: 0;
    border-top: var(--line);
    border-radius: 22px 22px 0 0;
    box-shadow: 0 -6px 18px rgba(23, 38, 32, .14);
  }

  .brand-mark { width: 44px; height: 44px; font-size: 18px; }

  .dock-list {
    flex-direction: row;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 2px;
    -webkit-overflow-scrolling: touch;
  }

  .nav-link {
    min-height: 44px;
    padding: 8px 13px;
    white-space: nowrap;
    font-size: 14.5px;
  }

  .stage { margin-left: 0; padding-bottom: 76px; }
  .split { grid-template-columns: 1fr; padding-bottom: 44px; }
  .rail { position: static; }
  .rail-card--blob { display: none; }

  .foot {
    margin-left: 0;
    grid-template-columns: 1fr;
    padding-bottom: 100px;
  }

  .foot-cta, .foot-bar { grid-column: auto; }
  .foot-list { grid-template-columns: 1fr; }

  h1 { font-size: clamp(1.75rem, 7.4vw, 2.5rem); }
  .hero, .hero-art { min-height: 44vh; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-delay: 0s !important;
    transition-duration: .001ms !important;
  }
}

button[aria-expanded]{min-width:44px;min-height:44px}