:root{
  --teal:#00A99D;
  --teal-dark:#008B81;
  --teal-soft:#E6F7F5;
  --teal-tint:#F0FAF8;
  --ink:#1A1A1A;
  --ink-2:#3D3D3D;
  --ink-3:#6B6B6B;
  --line:#EAEAEA;
  --bg:#FFFFFF;
  --bg-soft:#F7F8F8;
  --gold:#D4A24A;
  --shadow-sm:0 1px 2px rgba(16,24,40,.04);
  --shadow-md:0 4px 16px rgba(0,169,157,.08), 0 2px 4px rgba(16,24,40,.04);
  --shadow-lg:0 12px 32px rgba(0,169,157,.16), 0 4px 8px rgba(16,24,40,.06);
  --ease:cubic-bezier(.2,.8,.2,1);
}
*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}
html{scroll-behavior:smooth;scroll-padding-top:80px}
html,body{
  background:var(--bg);color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Helvetica Neue","Microsoft YaHei",sans-serif;
  font-size:clamp(15px,3.8vw,16px);line-height:1.75;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
}
body{
  max-width:680px;margin:0 auto;
  padding-bottom:calc(48px + env(safe-area-inset-bottom));
  overflow-x:hidden;
}
a{color:var(--teal-dark);text-decoration:none}

/* ===== Reading progress bar ===== */
.progress-bar{
  position:fixed;top:0;left:0;right:0;height:3px;
  background:transparent;z-index:100;pointer-events:none;
}
.progress-bar .fill{
  height:100%;width:0%;
  background:linear-gradient(90deg,var(--teal),var(--teal-dark));
  box-shadow:0 0 8px rgba(0,169,157,.5);
  transition:width .08s linear;
}

/* ===== Hero ===== */
.hero{
  position:relative;
  padding:64px 24px 48px;
  padding-top:calc(64px + env(safe-area-inset-top));
  background:linear-gradient(135deg,#00A99D 0%,#007F76 60%,#006159 100%);
  color:#fff;
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;right:-90px;top:-90px;width:260px;height:260px;
  border-radius:50%;background:rgba(255,255,255,.10);
  animation:float-a 9s ease-in-out infinite;
}
.hero::after{
  content:"";position:absolute;left:-50px;bottom:-110px;width:220px;height:220px;
  border-radius:50%;background:rgba(255,255,255,.07);
  animation:float-b 11s ease-in-out infinite;
}
.hero .blob{
  position:absolute;width:140px;height:140px;border-radius:50%;
  background:radial-gradient(circle at 30% 30%, rgba(255,255,255,.18), rgba(255,255,255,0) 70%);
  right:30%;top:50%;filter:blur(2px);
  animation:float-c 13s ease-in-out infinite;
  pointer-events:none;
}
@keyframes float-a{
  0%,100%{transform:translate(0,0) scale(1)}
  50%{transform:translate(-10px,18px) scale(1.04)}
}
@keyframes float-b{
  0%,100%{transform:translate(0,0) scale(1)}
  50%{transform:translate(14px,-20px) scale(1.06)}
}
@keyframes float-c{
  0%,100%{transform:translate(0,0)}
  50%{transform:translate(-30px,-40px)}
}
.hero .wave{
  position:relative;display:inline-block;
  font-size:13px;letter-spacing:2px;opacity:0;
  margin-bottom:14px;
  animation:fade-down .7s var(--ease) .1s forwards;
}
.hero h1{
  position:relative;font-size:clamp(24px,6.6vw,32px);
  line-height:1.35;font-weight:700;letter-spacing:-.5px;
  margin-bottom:16px;
}
.hero h1 .ch{
  display:inline-block;opacity:0;transform:translateY(14px);
  animation:char-up .55s var(--ease) forwards;
}
.hero .meta{
  position:relative;font-size:14px;opacity:0;
  display:flex;gap:12px;flex-wrap:wrap;
  animation:fade-up .7s var(--ease) .9s forwards;
}
.hero .meta span.label{display:inline-flex;align-items:center;gap:4px}
.hero .num{font-weight:700;font-size:15px}
.hero .dot{width:4px;height:4px;border-radius:50%;background:#fff;opacity:.5;align-self:center}
@keyframes char-up{
  to{opacity:1;transform:translateY(0)}
}
@keyframes fade-up{
  to{opacity:.9;transform:translateY(0)}
}
@keyframes fade-down{
  from{transform:translateY(-8px)}
  to{opacity:.85;transform:translateY(0)}
}

/* ===== Anchor nav ===== */
.anchors{
  position:sticky;top:0;z-index:10;
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:saturate(180%) blur(12px);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--line);
  overflow-x:auto;white-space:nowrap;
  padding:12px 16px;
  scrollbar-width:none;
  scroll-snap-type:x proximity;
  -webkit-overflow-scrolling:touch;
}
.anchors::-webkit-scrollbar{display:none}
.anchors a{
  display:inline-block;padding:8px 16px;margin-right:8px;
  font-size:13px;color:var(--ink-2);
  background:var(--bg-soft);border-radius:999px;
  min-height:36px;line-height:20px;
  scroll-snap-align:start;
  transition:background .25s var(--ease),color .25s var(--ease),transform .25s var(--ease);
}
.anchors a.active{
  background:var(--teal);color:#fff;
  box-shadow:0 4px 12px rgba(0,169,157,.28);
}

/* ===== Section ===== */
section{padding:40px 20px 8px}
.sec-head{display:flex;align-items:center;gap:10px;margin-bottom:22px}
.sec-head .bar{
  width:4px;height:20px;background:var(--teal);border-radius:2px;
  box-shadow:0 0 8px rgba(0,169,157,.4);
}
.sec-head h2{font-size:clamp(18px,5vw,21px);font-weight:700;letter-spacing:-.3px}
.sec-head .count{
  font-size:12px;color:var(--ink-3);
  background:var(--bg-soft);padding:3px 12px;border-radius:999px;margin-left:auto;
}

/* ===== Reveal animation ===== */
.reveal{
  opacity:0;transform:translateY(18px) scale(.985);
  transition:opacity .7s var(--ease), transform .7s var(--ease);
  will-change:opacity,transform;
}
.reveal.in{opacity:1;transform:translateY(0) scale(1)}

/* ===== Card hover/active accent ===== */
.card{
  position:relative;
  transition:transform .25s var(--ease), box-shadow .25s var(--ease), border-color .25s var(--ease);
}
.card::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;
  background:var(--teal);border-radius:0 3px 3px 0;
  transform:scaleY(0);transform-origin:center;
  transition:transform .3s var(--ease);
}
@media (hover:hover){
  .card:hover{
    transform:translateY(-4px);
    box-shadow:var(--shadow-lg);
    border-color:rgba(0,169,157,.25);
  }
  .card:hover::before{transform:scaleY(1)}
  .anchors a:hover{background:#dff5f2;color:var(--teal-dark)}
}
.card:active{
  transform:translateY(-2px);
  box-shadow:var(--shadow-md);
}
.card:active::before{transform:scaleY(1)}

/* ===== Event hero ===== */
.event-hero{
  background:linear-gradient(180deg,#FAFCFC 0%,#fff 100%);
  border:1px solid var(--line);border-radius:18px;
  padding:22px;margin-bottom:16px;
  box-shadow:var(--shadow-sm);
}
.event-hero .tag{
  display:inline-block;font-size:12px;color:var(--teal-dark);
  background:var(--teal-soft);padding:4px 12px;border-radius:999px;
  margin-bottom:12px;font-weight:500;letter-spacing:.5px;
}
.event-hero h3{font-size:clamp(17px,4.6vw,19px);line-height:1.45;margin-bottom:10px}
.event-hero .by{font-size:13px;color:var(--ink-3);margin-bottom:14px}
.event-hero .by .num{color:var(--teal-dark);font-weight:700}
.event-hero p{font-size:15px;color:var(--ink-2);margin-bottom:12px}
.event-hero .quote{
  position:relative;
  padding:14px 16px 14px 44px;margin:14px 0;
  background:var(--teal-tint);border-radius:10px;
  font-size:14px;color:var(--ink-2);line-height:1.7;
  font-style:italic;font-family:Georgia,"Source Han Serif SC","Songti SC",serif;
}
.event-hero .quote::before{
  content:"\201C";position:absolute;left:14px;top:6px;
  font-family:Georgia,serif;font-size:46px;line-height:1;
  color:var(--teal);opacity:.55;font-style:normal;
}
.event-hero .quote cite{
  display:block;margin-top:6px;font-size:12px;color:var(--ink-3);
  font-style:normal;font-family:inherit;
}
.points{margin-top:12px}
.points li{
  list-style:none;font-size:14px;color:var(--ink-2);
  padding:10px 0 10px 24px;position:relative;
  border-bottom:1px dashed var(--line);
}
.points li:last-child{border-bottom:none}
.points li::before{
  content:"";position:absolute;left:6px;top:16px;
  width:8px;height:8px;border-radius:50%;background:var(--teal);
  box-shadow:0 0 0 3px rgba(0,169,157,.15);
}

/* ===== Schedule ===== */
.schedule{display:flex;flex-direction:column;gap:10px}
.sched-item{
  display:flex;gap:14px;align-items:flex-start;
  background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:14px 16px;
  box-shadow:var(--shadow-sm);
}
.sched-item .date{
  flex:0 0 60px;text-align:center;
  background:var(--teal-soft);color:var(--teal-dark);
  border-radius:10px;padding:8px 0;
}
.sched-item .date .m{font-size:11px;letter-spacing:1px}
.sched-item .date .d{font-size:18px;font-weight:700;line-height:1.2}
.sched-item .body{flex:1}
.sched-item .body .name{font-size:15px;font-weight:600;margin-bottom:4px}
.sched-item .body .desc{font-size:13px;color:var(--ink-3);line-height:1.55}

/* ===== Topic cards ===== */
.topic{
  background:#fff;border:1px solid var(--line);border-radius:16px;
  padding:18px 18px 16px;margin-bottom:14px;
  box-shadow:var(--shadow-sm);
}
.topic .title-row{display:flex;align-items:flex-start;gap:10px;margin-bottom:10px}
.topic .num{
  flex:0 0 28px;height:28px;border-radius:8px;
  background:linear-gradient(135deg,var(--teal),var(--teal-dark));
  color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;
  box-shadow:0 4px 10px rgba(0,169,157,.3);
}
.topic h3{font-size:clamp(16px,4.4vw,18px);line-height:1.45;flex:1}
.topic .by{font-size:12px;color:var(--ink-3);margin:-6px 0 12px 38px}
.topic .summary{font-size:14px;color:var(--ink-2);margin:0 0 10px 0;line-height:1.75}
.topic .voices{margin-top:10px;border-top:1px dashed var(--line);padding-top:10px}
.voice{display:flex;gap:10px;padding:8px 0;font-size:13px;line-height:1.65}
.voice .who{flex:0 0 auto;color:var(--teal-dark);font-weight:600;min-width:64px}
.voice .said{color:var(--ink-2);flex:1}
.topic .consensus{
  margin-top:12px;background:var(--bg-soft);border-radius:10px;
  padding:11px 14px;font-size:13px;color:var(--ink-2);line-height:1.7;
  border-left:3px solid var(--teal);
}
.topic .consensus b{color:var(--ink);font-weight:600}
.topic .quote{
  position:relative;
  padding:12px 14px 12px 40px;margin:12px 0;
  background:var(--teal-tint);border-radius:10px;
  font-size:13px;color:var(--ink-2);line-height:1.7;
  font-style:italic;font-family:Georgia,"Source Han Serif SC","Songti SC",serif;
}
.topic .quote::before{
  content:"\201C";position:absolute;left:12px;top:4px;
  font-family:Georgia,serif;font-size:38px;line-height:1;
  color:var(--teal);opacity:.5;font-style:normal;
}

/* ===== People ===== */
.people{display:grid;grid-template-columns:1fr;gap:10px}
.person{
  display:flex;gap:14px;align-items:flex-start;
  background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:14px;box-shadow:var(--shadow-sm);
}
.avatar{
  flex:0 0 44px;height:44px;border-radius:50%;
  background:linear-gradient(135deg,var(--teal),var(--teal-dark));
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:600;
  box-shadow:0 4px 10px rgba(0,169,157,.28);
  transition:transform .25s var(--ease), box-shadow .25s var(--ease);
}
@media (hover:hover){
  .person:hover .avatar{transform:scale(1.08) rotate(-3deg);box-shadow:0 6px 14px rgba(0,169,157,.4)}
}
.person:active .avatar{transform:scale(1.06)}
.person .info .name{font-size:15px;font-weight:600;margin-bottom:2px}
.person .info .what{font-size:13px;color:var(--ink-3);line-height:1.55}

/* ===== Footer wave ===== */
.footer-wave{
  position:relative;margin-top:48px;line-height:0;overflow:hidden;
}
.footer-wave svg{
  display:block;width:200%;height:60px;
  animation:wave-slide 18s linear infinite;
}
@keyframes wave-slide{
  from{transform:translateX(0)}
  to{transform:translateX(-50%)}
}
footer{
  text-align:center;padding:24px 20px 0;
  font-size:12px;color:var(--ink-3);
}
footer .line{
  display:inline-block;width:24px;height:1px;
  background:var(--line);vertical-align:middle;margin:0 8px;
}

/* ===== Back to top ===== */
.back-top{
  position:fixed;right:20px;bottom:calc(20px + env(safe-area-inset-bottom));
  width:46px;height:46px;border-radius:50%;
  background:linear-gradient(135deg,var(--teal),var(--teal-dark));
  color:#fff;border:none;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 20px rgba(0,169,157,.4);
  opacity:0;transform:translateY(12px) scale(.9);pointer-events:none;
  transition:opacity .3s var(--ease), transform .3s var(--ease);
  z-index:50;
}
.back-top.show{opacity:1;transform:translateY(0) scale(1);pointer-events:auto}
.back-top:active{transform:scale(.94)}
@media (hover:hover){
  .back-top:hover{transform:translateY(-2px) scale(1.08);box-shadow:0 12px 24px rgba(0,169,157,.5)}
}
.back-top svg{width:20px;height:20px}

/* ===== Archive list ===== */
.archive-list{display:flex;flex-direction:column;gap:12px}
.archive-item{
  display:flex;gap:16px;align-items:stretch;
  background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:16px;box-shadow:var(--shadow-sm);
  color:var(--ink);
}
.archive-item .arch-date{
  flex:0 0 84px;text-align:center;
  background:linear-gradient(135deg,var(--teal-soft),#fff);
  border-radius:12px;padding:12px 6px;
  display:flex;flex-direction:column;justify-content:center;
}
.archive-item .arch-date .y{font-size:11px;color:var(--ink-3);letter-spacing:1px}
.archive-item .arch-date .md{font-size:20px;font-weight:700;color:var(--teal-dark);line-height:1.1;margin-top:2px}
.archive-item .arch-date .w{font-size:11px;color:var(--ink-3);margin-top:4px}
.archive-item .arch-body{flex:1;display:flex;flex-direction:column;justify-content:center;min-width:0}
.archive-item .arch-title{font-size:15px;font-weight:600;margin-bottom:4px;line-height:1.4}
.archive-item .arch-snippet{font-size:13px;color:var(--ink-3);line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ===== Tablet+ ===== */
@media(min-width:520px){
  .hero{padding:80px 32px 56px}
  section{padding:52px 28px 8px}
  .people{grid-template-columns:1fr 1fr}
}

/* ===== Reduced motion ===== */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .hero .blob,.hero::before,.hero::after,.footer-wave svg{animation:none !important}
  .reveal{opacity:1;transform:none}
  .hero h1 .ch{opacity:1;transform:none}
  .hero .wave,.hero .meta{opacity:.85}
}