:root{
  --white:#ffffff;
  --ink:#0a1f44;
  --blue:#2f80ed;
  --mist:#f5f8ff;
  --grey:#5f6b7f;
  --line:#e6ecf5;
  --serif:Georgia,"Songti SC","STSong","SimSun",serif;
  --sans:system-ui,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  --kai:"Kaiti SC","STKaiti","KaiTi","SimSun",serif;
  --col:40rem;
  --space-section:clamp(5.5rem,13vh,9.5rem);
  --space-stanza:clamp(2.75rem,5.5vh,3.75rem);
  --fs-hero:clamp(2rem,5.2vw,3.6rem);
  --fs-title:clamp(1.5rem,3vw,1.7rem);
  --fs-poem:clamp(1.25rem,2.3vw,1.55rem);
  --fs-thinker:clamp(1.15rem,2vw,1.35rem);
  --fs-closing:clamp(1.5rem,3.2vw,1.95rem);
}

*{box-sizing:border-box;margin:0;padding:0}

html{color-scheme:light;-webkit-text-size-adjust:100%;text-size-adjust:100%}

body{
  background:var(--white);
  color:var(--ink);
  font-family:var(--sans);
  font-size:1rem;
  line-height:1.9;
  font-synthesis:none;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

::selection{background:#d6e6ff;color:var(--ink)}
:focus-visible{outline:2px solid var(--blue);outline-offset:3px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

[data-lang="en"]{display:none}
html.lang-en [data-lang="zh"]{display:none}
html.lang-en [data-lang="en"]{display:revert}

.period{color:var(--blue);font-family:var(--serif)}
.wrap{max-width:var(--col);margin:0 auto}

.lang-toggle{
  position:fixed;
  top:1rem;
  right:1.1rem;
  z-index:10;
  display:none;
  border:0;
  background:transparent;
  padding:.6rem .7rem;
  font-family:var(--sans);
  font-size:.85rem;
  letter-spacing:.18em;
  color:var(--grey);
  cursor:pointer;
  -webkit-tap-highlight-color:transparent;
  touch-action:manipulation;
  transition:color .2s ease;
}
html.js .lang-toggle{display:block}
.lang-toggle:hover{color:var(--blue)}

.hero{
  position:relative;
  min-height:100vh;
  min-height:100svh;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  text-align:center;
  padding:6.5rem 1.5rem 7rem;
}

.greeting{
  font-size:1rem;
  letter-spacing:.18em;
  color:var(--grey);
  margin-bottom:1.6rem;
}

.hero h1{
  font-family:var(--serif);
  font-weight:normal;
  font-size:var(--fs-hero);
  line-height:1.45;
  letter-spacing:.02em;
  text-wrap:balance;
  max-width:17em;
}

.sub{
  margin-top:1.8rem;
  max-width:24em;
  font-size:1rem;
  color:var(--grey);
}

.scroll-hint{
  position:absolute;
  bottom:2.2rem;
  left:50%;
  transform:translateX(-50%);
  font-size:.85rem;
  letter-spacing:.22em;
  color:var(--grey);
}
.scroll-hint::before{
  content:"";
  display:block;
  width:1px;
  height:2.4rem;
  margin:0 auto .6rem;
  background:linear-gradient(var(--mist),var(--blue));
}

.beliefs,.thinkers{padding:var(--space-section) 1.5rem}
.beliefs{position:relative;overflow:hidden}
.beliefs::before{
  content:"";
  position:absolute;
  top:0;bottom:0;right:0;
  width:min(42%,480px);
  background:url(assets/poem-bg.webp) center/cover no-repeat;
  -webkit-mask-image:linear-gradient(to left,#000 55%,transparent 98%),linear-gradient(to bottom,transparent,#000 12%,#000 88%,transparent);
  mask-image:linear-gradient(to left,#000 55%,transparent 98%),linear-gradient(to bottom,transparent,#000 12%,#000 88%,transparent);
  -webkit-mask-composite:source-in;
  mask-composite:intersect;
  opacity:.45;
  pointer-events:none;
}
.beliefs .wrap{position:relative}
.closing{padding:clamp(6.5rem,15vh,11rem) 1.5rem;text-align:center}
.closing .wrap{position:relative}
.flower{position:absolute;height:auto;pointer-events:none;user-select:none}
.flower-1{width:34px;top:-1.6rem;right:9%;transform:rotate(14deg)}
.flower-2{width:20px;bottom:-0.8rem;left:10%;transform:rotate(-24deg);opacity:.9}
.flower-3{width:14px;top:2.4rem;left:4%;transform:rotate(38deg);opacity:.75}

.section-title{
  font-family:var(--kai);
  font-weight:normal;
  font-size:var(--fs-title);
  letter-spacing:.1em;
  margin-bottom:clamp(3rem,7vh,4.5rem);
}
.section-title::after{
  content:"";
  display:block;
  width:64px;
  height:8px;
  margin-top:.6rem;
  background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='64' height='8' viewBox='0 0 64 8'%3E%3Cpath d='M1 5.5c6-4 10 3 16 0s10 3 16 0 10 3 16 0 10 3 14 0' fill='none' stroke='%232f80ed' stroke-width='1.6' stroke-linecap='round'/%3E%3C/svg%3E") no-repeat;
}
html.lang-en .section-title{font-family:var(--serif);font-style:italic;letter-spacing:.03em}
html.lang-en .belief .stanza{letter-spacing:normal}

.belief blockquote p{
  font-family:var(--serif);
  font-size:var(--fs-poem);
  line-height:1.8;
  letter-spacing:.02em;
  text-wrap:pretty;
}
.belief + .belief{
  margin-top:clamp(2.5rem,5vh,3.5rem);
  border-top:1px solid var(--line);
  padding-top:clamp(2.5rem,5vh,3.5rem);
}
.belief .stanza{line-height:2;letter-spacing:.05em}
.belief .stanza + .stanza{
  margin-top:var(--space-stanza);
  border-top:1px solid var(--line);
  padding-top:var(--space-stanza);
}

.thinkers ul{list-style:none}
.thinkers li + li{margin-top:clamp(2.25rem,4.5vh,3rem)}
.thinker-name{
  font-size:.85rem;
  letter-spacing:.2em;
  color:var(--grey);
  margin-bottom:.35rem;
}
.thinker-line{
  font-family:var(--serif);
  font-size:var(--fs-thinker);
  line-height:1.85;
}
.closing-line{
  font-family:var(--serif);
  font-size:var(--fs-closing);
  line-height:1.7;
  letter-spacing:.02em;
  text-wrap:balance;
  max-width:20em;
  margin:0 auto;
}
.closing-note{
  margin-top:1.6rem;
  font-size:1rem;
  letter-spacing:.06em;
  color:var(--grey);
}
.signature{
  margin-top:2.4rem;
  font-size:.9rem;
  letter-spacing:.12em;
  color:var(--grey);
}

footer{
  border-top:1px solid var(--line);
  padding:2.5rem 1.5rem;
  text-align:center;
  font-size:.85rem;
  letter-spacing:.05em;
  color:var(--grey);
}

@media (prefers-reduced-motion: no-preference){
  html{scroll-behavior:smooth}
  .greeting,.hero h1,.sub{animation:rise .9s cubic-bezier(.2,.6,.2,1) backwards}
  .hero h1{animation-delay:.12s}
  .sub{animation-delay:.24s}
  .period{animation:ink 1s ease .6s backwards}
  .scroll-hint{animation:ink 1.2s ease 1s backwards}
  .scroll-hint::before{animation:breathe 3s ease-in-out 1.2s infinite}
  @keyframes rise{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
  @keyframes ink{from{opacity:0}to{opacity:1}}
  @keyframes breathe{0%,100%{opacity:.35}50%{opacity:1}}
}

@media (max-width:760px){
  .flower-1{width:26px;top:-1.2rem;right:2%}
  .flower-2{width:16px;bottom:-0.6rem;left:2%}
  .flower-3{width:12px;top:2rem;left:2%}
}

@media (max-height:520px){
  .scroll-hint{display:none}
}

@media print{
  .lang-toggle,.scroll-hint{display:none!important}
  body{color:#000;background:#fff}
  .hero{min-height:auto;padding:2rem 0 1rem}
  .beliefs,.thinkers,.closing{padding:1.5rem 0}
  .belief,.stanza,.thinkers li,.closing-line{break-inside:avoid}
  .beliefs::before{display:none!important}
  footer{border-top-color:#ccc}
}