/* ─────────────────────────────────────────────────────────────
   野观 · NATURE
   Hand-written CSS. No frameworks, no external requests.
   ───────────────────────────────────────────────────────────── */

@font-face{
  font-family:"Cormorant";
  src:url("/assets/fonts/cormorant-400.woff2") format("woff2");
  font-weight:400; font-style:normal; font-display:swap;
}
@font-face{
  font-family:"Cormorant";
  src:url("/assets/fonts/cormorant-300i.woff2") format("woff2");
  font-weight:300; font-style:italic; font-display:swap;
}
@font-face{
  font-family:"Inter";
  src:url("/assets/fonts/inter-400.woff2") format("woff2");
  font-weight:300 500; font-style:normal; font-display:swap;
}

:root{
  --ink:#101310;
  --ink-2:#1b201a;
  --paper:#f2efe6;
  --paper-2:#e7e2d4;
  --moss:#5d6b50;
  --moss-deep:#2c3628;
  --clay:#a8674c;
  --line:rgba(16,19,16,.16);
  --line-l:rgba(242,239,230,.18);

  --serif:"Cormorant","Songti SC","Noto Serif CJK SC","Source Han Serif SC","Source Han Serif CN",STSong,SimSun,Georgia,serif;
  --sans:"Inter","PingFang SC","Hiragino Sans GB","Noto Sans CJK SC","Microsoft YaHei",system-ui,sans-serif;

  --pad:clamp(20px,5vw,72px);
  --ease:cubic-bezier(.22,.61,.36,1);
}

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

html{
  scroll-behavior:smooth;
  -webkit-text-size-adjust:100%;
}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-weight:400;
  font-size:clamp(15px,1.02vw,17px);
  line-height:1.9;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img,canvas{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
::selection{background:var(--moss-deep);color:var(--paper)}

/* ── 全局细颗粒 / 纸张质感 ───────────────────────────────── */
.grain{
  position:fixed; inset:0; z-index:60; pointer-events:none;
  opacity:.28; mix-blend-mode:multiply;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.82' numOctaves='3' stitchTiles='stitch'/><feColorMatrix type='saturate' values='0'/></filter><rect width='180' height='180' filter='url(%23n)' opacity='.5'/></svg>");
}
.progress{
  position:fixed; top:0; left:0; right:0; height:1px; z-index:70;
  background:transparent;
}
.progress i{
  display:block; height:100%; width:0%;
  background:linear-gradient(90deg,var(--moss),var(--clay));
  transition:width .12s linear;
}

/* ── 自定义光标 ──────────────────────────────────────────── */
.cursor{
  position:fixed; top:0; left:0; z-index:65;
  width:26px; height:26px; margin:-13px 0 0 -13px;
  border:1px solid rgba(242,239,230,.65);
  border-radius:50%;
  mix-blend-mode:difference;
  pointer-events:none;
  opacity:0;
  transition:opacity .4s var(--ease), width .25s var(--ease), height .25s var(--ease), margin .25s var(--ease), background .25s var(--ease);
}
.cursor.on{opacity:1}
.cursor.grow{width:52px;height:52px;margin:-26px 0 0 -26px;background:rgba(242,239,230,.14)}

/* ── 导航 ────────────────────────────────────────────────── */
.nav{
  position:fixed; top:0; left:0; right:0; z-index:50;
  display:flex; align-items:center; justify-content:space-between;
  padding:22px var(--pad);
  color:var(--paper);
  transition:background .5s var(--ease), padding .5s var(--ease), color .5s var(--ease), backdrop-filter .5s;
}
.nav.nav--dark{
  background:transparent;
  backdrop-filter:none;
  box-shadow:none;
  color:var(--paper);
}
.nav.solid{
  padding:14px var(--pad);
  background:rgba(242,239,230,.82);
  backdrop-filter:blur(14px) saturate(1.2);
  color:var(--ink);
  box-shadow:0 1px 0 var(--line);
}
/* 深色区块上方：透明的浅色导航（优先级高于 .solid） */
.nav.solid.nav--dark{
  background:linear-gradient(180deg,rgba(8,11,8,.55),transparent);
  backdrop-filter:none;
  box-shadow:none;
  color:var(--paper);
}
.wordmark{display:flex;align-items:baseline;gap:10px}
.wordmark .zh{font-family:var(--serif);font-size:19px;letter-spacing:.22em}
.wordmark .en{
  font-family:"Inter",sans-serif;font-size:9.5px;letter-spacing:.42em;opacity:.6;
  transform:translateY(-1px);
}
.nav nav{display:flex;gap:clamp(14px,2.4vw,34px)}
.nav nav a{
  font-size:12px;letter-spacing:.16em;opacity:.72;
  transition:opacity .3s var(--ease);
  position:relative;padding-bottom:3px;
}
.nav nav a em{
  font-family:var(--serif);font-style:italic;font-size:11px;opacity:.55;
  margin-right:5px;letter-spacing:.06em;
}
.nav nav a::after{
  content:"";position:absolute;left:0;right:100%;bottom:0;height:1px;
  background:currentColor;transition:right .45s var(--ease);
}
.nav nav a:hover{opacity:1}
.nav nav a:hover::after{right:0}

/* ── HERO ────────────────────────────────────────────────── */
.hero{
  position:relative;
  min-height:100svh;
  display:flex; flex-direction:column; justify-content:flex-end;
  background:#0d100d; color:var(--paper);
  overflow:hidden;
  isolation:isolate;
}
.hero__field{position:absolute;inset:0;width:100%;height:100%;z-index:0}
.hero__veil{
  position:absolute;inset:0;z-index:1;
  background:
    linear-gradient(180deg,rgba(9,12,9,.72) 0%,rgba(9,12,9,.10) 42%,rgba(9,12,9,.05) 62%,rgba(9,12,9,.88) 100%),
    radial-gradient(120% 80% at 70% 30%,rgba(120,140,90,.10),transparent 60%),
    radial-gradient(130% 105% at 50% 42%,transparent 42%,rgba(5,8,5,.62) 100%);
}
.hero__inner{
  position:relative;z-index:2;
  padding:0 var(--pad) clamp(56px,9vh,110px);
  max-width:1500px;width:100%;
}
.eyebrow{
  margin:0 0 clamp(18px,3vh,30px);
  font-size:11px;letter-spacing:.42em;text-transform:uppercase;opacity:.62;
  padding-left:56px;position:relative;
}
.eyebrow::before{
  content:"";position:absolute;left:0;top:.72em;width:38px;height:1px;background:currentColor;opacity:.65;
}
.display{
  margin:0;
  font-family:var(--serif);
  font-weight:400;
  font-size:clamp(2.7rem,7.4vw,7rem);
  line-height:1.06;
  letter-spacing:.015em;
  text-wrap:balance;
}
.display .l{display:block;overflow:hidden}
.display .l > *{display:block}
.latin{
  margin:clamp(20px,3.4vh,34px) 0 0;
  font-family:var(--serif);font-style:italic;font-weight:300;
  font-size:clamp(1.05rem,2.1vw,1.7rem);
  letter-spacing:.02em;color:rgba(242,239,230,.72);
}
.hero__foot{
  position:relative;z-index:2;
  display:flex;justify-content:space-between;align-items:flex-end;
  padding:0 var(--pad) 26px;
  font-size:10px;letter-spacing:.3em;text-transform:uppercase;
  color:rgba(242,239,230,.55);
}
.scroll{display:flex;align-items:center;gap:12px}
.scroll i{
  display:block;width:1px;height:34px;background:linear-gradient(180deg,transparent,rgba(242,239,230,.7));
  position:relative;overflow:hidden;
}
.scroll i::after{
  content:"";position:absolute;left:0;top:-34px;width:1px;height:34px;
  background:rgba(242,239,230,.9);
  animation:drip 2.6s var(--ease) infinite;
}
@keyframes drip{0%{top:-34px}60%,100%{top:34px}}

/* 入场动画 */
[data-hero]{
  opacity:0;transform:translateY(22px);
  animation:rise 1.15s var(--ease) forwards;
}
[data-hero]:nth-of-type(1){animation-delay:.20s}
[data-hero]:nth-of-type(2){animation-delay:.36s}
[data-hero]:nth-of-type(3){animation-delay:.50s}
@keyframes rise{to{opacity:1;transform:none}}

/* ── 通用版式 ────────────────────────────────────────────── */
.wrap{max-width:1320px;margin:0 auto;padding:0 var(--pad)}
.chapter{position:relative}
.grid{display:grid;grid-template-columns:repeat(12,1fr);gap:clamp(24px,4vw,64px);align-items:start}
.grid--2{grid-template-columns:repeat(12,1fr)}
.grid--2 .h2{grid-column:1/span 6}
.col-text{grid-column:1/span 5}
.plate{grid-column:7/span 6;margin:0}

.tag{
  display:flex;align-items:baseline;gap:12px;
  margin:0 0 clamp(24px,4vh,44px);
  font-size:11px;letter-spacing:.34em;text-transform:uppercase;
  color:var(--moss);
}
.tag em{
  font-family:var(--serif);font-style:italic;font-size:13px;letter-spacing:.08em;
  color:var(--clay);
}
.tag span{opacity:.55;letter-spacing:.4em;font-size:9.5px}
.tag--light{color:rgba(242,239,230,.6)}
.tag--light em{color:rgba(215,160,130,.9)}

.h2{
  margin:0 0 clamp(24px,4vh,40px);
  font-family:var(--serif);font-weight:400;
  font-size:clamp(1.9rem,4vw,3.5rem);
  line-height:1.34;letter-spacing:.01em;
}
.h2--tight{line-height:1.26}

.body{
  margin:0 0 1.35em;
  color:rgba(16,19,16,.78);
  max-width:34em;
  font-weight:400;
  letter-spacing:.015em;
}
.note{
  margin:clamp(20px,3vh,30px) 0 0;
  font-size:12px;letter-spacing:.14em;color:var(--moss);
  padding-left:18px;border-left:1px solid var(--line);
}

/* ── 01 风 ───────────────────────────────────────────────── */
.wind{padding:clamp(96px,15vh,190px) 0 clamp(80px,12vh,150px)}
.plate canvas{
  width:100%;aspect-ratio:4/5;height:auto;
  background:linear-gradient(170deg,#eae6d9,#e2ddcd 55%,#d8d3c1);
  border:1px solid var(--line);
}
.plate figcaption{
  display:flex;gap:12px;margin-top:14px;
  font-size:11px;letter-spacing:.14em;color:rgba(16,19,16,.5);
}
.plate figcaption span{color:var(--clay);letter-spacing:.2em}

/* ── 02 水 ───────────────────────────────────────────────── */
.water{
  position:relative;
  min-height:min(104vh,980px);
  background:#0c100f;
  color:var(--paper);
  display:flex;align-items:center;
  overflow:hidden;
}
.water canvas{position:absolute;inset:0;width:100%;height:100%;z-index:0}
.water::after{
  content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:radial-gradient(90% 70% at 50% 50%,rgba(8,12,11,0) 30%,rgba(8,12,11,.55) 100%);
}
.water__content{position:relative;z-index:2;width:100%;max-width:1320px;margin:0 auto;padding:clamp(80px,12vh,140px) var(--pad)}
.quote{
  margin:0;
  font-family:var(--serif);font-weight:400;
  font-size:clamp(2rem,4.6vw,4.1rem);
  line-height:1.42;letter-spacing:.02em;
  text-shadow:0 2px 40px rgba(0,0,0,.35);
}
.hint{
  display:flex;align-items:center;gap:10px;
  margin:clamp(34px,6vh,64px) 0 0;
  font-size:10.5px;letter-spacing:.34em;text-transform:uppercase;
  color:rgba(242,239,230,.5);
}
.hint i{
  width:6px;height:6px;border-radius:50%;background:rgba(242,239,230,.55);
  animation:pulse 3.4s var(--ease) infinite;
}
@keyframes pulse{0%,100%{opacity:.25;transform:scale(.8)}50%{opacity:.9;transform:scale(1.15)}}

/* ── 03 光 ───────────────────────────────────────────────── */
.light{
  position:relative;overflow:hidden;
  padding:clamp(100px,16vh,200px) 0;
  background:linear-gradient(175deg,#f5f2e9 0%,#eee9db 48%,#e6e0d0 100%);
}
.light__dapple{
  position:absolute;inset:-12%;z-index:0;
  opacity:.9;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='900' height='900'><filter id='d'><feTurbulence type='fractalNoise' baseFrequency='.011 .017' numOctaves='4' seed='11'/><feColorMatrix type='matrix' values='0 0 0 0 .94 0 0 0 0 .90 0 0 0 0 .76 0 0 0 -3.2 1.9'/><feGaussianBlur stdDeviation='9'/></filter><rect width='900' height='900' filter='url(%23d)'/></svg>");
  background-size:cover;
  mix-blend-mode:screen;
  will-change:transform;
}
.light .wrap{position:relative;z-index:1}
.light__text{grid-column:7/span 5;padding-top:.6em}

.stats{
  display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(20px,3vw,48px);
  margin:clamp(64px,12vh,120px) 0 0;
  border-top:1px solid var(--line);padding-top:26px;
}
.stats div{display:flex;flex-direction:column;gap:6px}
.stats dt{font-size:10.5px;letter-spacing:.28em;text-transform:uppercase;color:var(--moss)}
.stats dd{
  margin:0;font-family:var(--serif);font-size:clamp(1.5rem,2.6vw,2.3rem);line-height:1.1;
}
.stats small{font-family:var(--sans);font-size:10px;letter-spacing:.2em;opacity:.5;margin-left:4px}



/* ── 光斑图版：光标即光源 ─────────────────────────────────── */
.beam{margin:clamp(46px,8vh,92px) 0 0}
.beam__stage{
  position:relative;overflow:hidden;
  aspect-ratio:2.15/1;
  background:#0a0e0b;
  border:1px solid var(--line);
  cursor:none;
  isolation:isolate;
}
.beam__shadow{
  position:absolute;inset:0;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='700' height='700'><filter id='d'><feTurbulence type='fractalNoise' baseFrequency='.012 .02' numOctaves='4' seed='9'/><feColorMatrix type='matrix' values='0 0 0 0 .34 0 0 0 0 .40 0 0 0 0 .28 0 0 0 -2.4 1.55'/><feGaussianBlur stdDeviation='5'/></filter><rect width='700' height='700' filter='url(%23d)'/></svg>");
  background-size:58%;
  opacity:.5;
}
.beam__light{
  position:absolute;inset:-22%;
  background-color:#eadcb6;
  background-image:
    radial-gradient(72% 72% at 28% 22%,rgba(255,250,226,.92),transparent 62%),
    radial-gradient(58% 58% at 76% 82%,rgba(126,146,96,.55),transparent 68%),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='700' height='700'><filter id='d'><feTurbulence type='fractalNoise' baseFrequency='.012 .02' numOctaves='4' seed='9'/><feColorMatrix type='matrix' values='0 0 0 0 .99 0 0 0 0 .95 0 0 0 0 .80 0 0 0 -2.9 1.75'/><feGaussianBlur stdDeviation='3.5'/></filter><rect width='700' height='700' filter='url(%23d)'/></svg>");
  background-size:auto,auto,54%;
  background-blend-mode:normal,multiply,multiply;
  -webkit-mask-image:radial-gradient(ellipse 30% 44% at var(--bx,50%) var(--by,50%),#000 0%,rgba(0,0,0,.94) 28%,rgba(0,0,0,.42) 62%,transparent 82%);
  mask-image:radial-gradient(ellipse 30% 44% at var(--bx,50%) var(--by,50%),#000 0%,rgba(0,0,0,.94) 28%,rgba(0,0,0,.42) 62%,transparent 82%);
  will-change:mask-image;
}
.beam__ring{
  position:absolute;top:0;left:0;
  width:84px;height:84px;margin:-42px 0 0 -42px;
  border:1px solid rgba(255,250,235,.45);
  border-radius:50%;
  mix-blend-mode:screen;
  opacity:0;transition:opacity .4s var(--ease);
  pointer-events:none;
}
.beam__stage:hover .beam__ring{opacity:1}
.beam figcaption{
  display:flex;gap:12px;margin-top:14px;
  font-size:11px;letter-spacing:.14em;color:rgba(16,19,16,.5);
}
.beam figcaption span{color:var(--clay);letter-spacing:.2em}
@media (max-width:760px){
  .beam__stage{aspect-ratio:1.3/1;cursor:auto}
  .beam__ring{display:none}
}

/* ── 04 记 ───────────────────────────────────────────────── */
.notes{padding:clamp(96px,14vh,180px) 0 clamp(80px,10vh,120px);background:var(--paper)}
.log{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.log li{
  display:grid;grid-template-columns:100px 130px 1fr;gap:clamp(12px,2vw,32px);
  align-items:baseline;
  padding:clamp(20px,3.4vh,32px) 0;
  border-bottom:1px solid var(--line);
  transition:padding-left .5s var(--ease), color .4s var(--ease);
}
.log li:hover{padding-left:16px;color:var(--moss-deep)}
.log .date{font-family:var(--serif);font-style:italic;font-size:15px;letter-spacing:.1em;color:var(--clay)}
.log .place{font-size:12px;letter-spacing:.26em;text-transform:uppercase;opacity:.6}
.log .line{font-size:clamp(1rem,1.5vw,1.22rem);line-height:1.75;letter-spacing:.01em}

.closing{
  margin:clamp(72px,12vh,130px) 0 0;
  font-family:var(--serif);
  font-size:clamp(1.6rem,3.4vw,2.9rem);
  line-height:1.55;letter-spacing:.02em;max-width:20em;
}

/* ── FOOTER ──────────────────────────────────────────────── */
.foot{
  position:relative;overflow:hidden;
  background:var(--ink);color:var(--paper);
  padding:clamp(70px,10vh,110px) var(--pad) 30px;
}
.foot__mark{
  font-family:var(--serif);
  font-size:clamp(4.2rem,17vw,16rem);
  line-height:.82;letter-spacing:.06em;
  color:rgba(242,239,230,.10);
  user-select:none;margin-bottom:clamp(30px,6vh,70px);
  white-space:nowrap;
}
.foot__row{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:10px;letter-spacing:.26em;text-transform:uppercase;
  color:rgba(242,239,230,.45);
  border-top:1px solid var(--line-l);padding-top:20px;
}
.edge{color:rgba(242,239,230,.62)}
.edge b{font-weight:400;color:rgba(200,170,140,.95)}

/* ── 滚动出现 ────────────────────────────────────────────── */
[data-reveal]{
  opacity:0;transform:translateY(26px);
  transition:opacity 1.05s var(--ease), transform 1.05s var(--ease);
  transition-delay:var(--d,0ms);
}
[data-reveal].in{opacity:1;transform:none}

/* ── 响应式 ──────────────────────────────────────────────── */
@media (max-width:900px){
  .nav nav a em{display:none}
  .col-text,.plate,.light__text{grid-column:1/-1}
  .plate{margin-top:16px}
  .plate canvas{aspect-ratio:1/1}
  .grid--2{gap:0}
  .stats{grid-template-columns:1fr;gap:22px}
  .stats div{flex-direction:row;justify-content:space-between;align-items:baseline;border-bottom:1px solid var(--line);padding-bottom:12px}
  .log li{grid-template-columns:1fr;gap:6px}
  .log .line{font-size:1rem}
  .quote br{display:none}
  .foot__mark{letter-spacing:.02em}
}
@media (max-width:560px){
  .nav nav{gap:12px}
  .nav nav a{font-size:11px;letter-spacing:.1em}
  .wordmark .en{display:none}
  .hero__foot .meta{display:none}
  .hero__foot{justify-content:flex-end}
}
@media (hover:none){
  .cursor{display:none}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  [data-reveal],[data-hero]{opacity:1;transform:none}
  .scroll i::after{display:none}
}