/* ===== 死亡的生日 · 宋舒颜诗集（宏观诗墙 + 电影氛围动效） ===== */
:root{
  --serif:"Noto Serif SC",serif;
  --lat:"Cormorant Garamond",serif;
  --hell-ac:#c0413f; --purg-ac:#d08a45; --heav-ac:#c79a4e;
  --ease:cubic-bezier(.22,.61,.36,1);
  --bg:#080507;            /* 全站背景，JS 随篇渐变 */
  --fg:#e7ded6;
}
*{margin:0;padding:0;box-sizing:border-box}
html,body{height:100%}
body{font-family:var(--serif);background:#060409;color:var(--fg);-webkit-font-smoothing:antialiased;overflow-x:hidden;transition:color 1.1s var(--ease);cursor:none}
/* 内容区透明，露出 WebGL 背景；亮篇/页脚为不透明覆盖 */
#hero,.prose-sec,.chapter{background:transparent}
.chapter[data-section="天堂篇"]{color:#241f1a}
.chapter[data-section="天堂篇"] .card-cap{color:#fff}
#postface{color:#241f1a}
#postface .prose-body{color:#4a4038}
/* 读诗聚光层 */
.modal-text{position:relative}
.reader-spot{position:fixed;width:420px;height:420px;border-radius:50%;pointer-events:none;z-index:1;
  background:radial-gradient(circle,rgba(255,240,210,.10),transparent 65%);transform:translate(-50%,-50%);mix-blend-mode:screen}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
::selection{background:var(--hell-ac);color:#fff}
@media (pointer:coarse){body{cursor:auto}#cursor{display:none}}

/* 固定层 */
#webgl-bg{position:fixed;inset:0;z-index:-2;display:block;width:100vw;height:100vh}
#three-bg{position:fixed;inset:0;z-index:-1;display:block;width:100vw;height:100vh;pointer-events:none}
#fx{position:fixed;inset:0;z-index:0;pointer-events:none}
#grain{position:fixed;inset:-50%;z-index:1;pointer-events:none;opacity:.05;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  animation:grain 1.2s steps(3) infinite}
@keyframes grain{0%{transform:translate(0,0)}33%{transform:translate(-6%,4%)}66%{transform:translate(4%,-5%)}100%{transform:translate(0,0)}}
#cursor{position:fixed;top:0;left:0;z-index:80;width:36px;height:36px;border:1px solid rgba(255,255,255,.6);border-radius:50%;transform:translate(-50%,-50%);pointer-events:none;transition:width .3s,height .3s,background .3s,border-color .3s,opacity .3s;mix-blend-mode:difference}
#cursor.hot{width:64px;height:64px;background:rgba(255,255,255,.12)}
#cursor::after{content:"";position:absolute;top:50%;left:50%;width:4px;height:4px;background:#fff;border-radius:50%;transform:translate(-50%,-50%)}
#cursor.view::before{content:"查看";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);font-size:11px;letter-spacing:.2em;color:#fff;font-family:var(--serif)}
#cursor.view::after{opacity:0}
#progress{position:fixed;top:0;left:0;right:0;height:2px;z-index:70;background:rgba(255,255,255,.08)}
#progress i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--hell-ac),var(--purg-ac),var(--heav-ac));transform-origin:left}

/* content above fixed layers */
#nav,#scroll,#modal,#loader{position:relative;z-index:10}
#modal{z-index:90}#loader{z-index:100}

/* 载入 */
#loader{position:fixed;inset:0;background:#080507;display:flex;align-items:center;justify-content:center;gap:.15em}
#loader .loader-inner span{font-size:clamp(28px,6vw,64px);font-weight:700;letter-spacing:.1em;opacity:0;transform:translateY(20px) rotateX(60deg);display:inline-block}
#loader.done{opacity:0;visibility:hidden;transition:opacity .8s,visibility .8s}

/* 导航 */
#nav{position:fixed;top:0;left:0;right:0;display:flex;justify-content:space-between;align-items:center;padding:18px clamp(20px,4vw,56px);mix-blend-mode:difference;color:#fff}
.nav-logo{font-weight:700;letter-spacing:.18em;font-size:15px}
.nav-links{display:flex;gap:clamp(14px,2vw,30px);font-size:13px;letter-spacing:.12em}
.nav-links a{position:relative;opacity:.85}
.nav-links a::after{content:"";position:absolute;left:0;bottom:-4px;width:0;height:1px;background:currentColor;transition:width .35s var(--ease)}
.nav-links a:hover::after{width:100%}

/* HERO */
#hero{position:relative;min-height:100vh;display:flex;align-items:center;justify-content:center;overflow:hidden}
.hero-bgtype{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);font-family:var(--lat);font-size:clamp(120px,30vw,460px);font-weight:600;color:#fff;opacity:.045;white-space:nowrap;pointer-events:none;user-select:none}
.hero-portrait{position:absolute;right:8%;top:50%;transform:translateY(-50%);width:min(38vw,440px);aspect-ratio:1/1;border-radius:4px;overflow:hidden;box-shadow:0 40px 120px rgba(0,0,0,.7);filter:grayscale(.85) contrast(1.12) brightness(.85);will-change:transform}
.hero-portrait img{width:100%;height:100%;object-fit:cover;object-position:center 30%}
.hero-portrait::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(8,5,7,.55))}
.hero-copy{position:relative;z-index:2;max-width:1200px;width:100%;padding:0 clamp(20px,6vw,90px)}
.hero-kicker{font-size:clamp(13px,1.4vw,18px);letter-spacing:.7em;color:var(--hell-ac);margin-bottom:18px;text-indent:.7em}
.hero-title{font-size:clamp(64px,13vw,200px);font-weight:900;line-height:.95;text-shadow:0 6px 40px rgba(0,0,0,.6)}
.hero-sub{font-size:clamp(16px,2.2vw,30px);font-weight:300;letter-spacing:.35em;margin-top:24px;color:#cdbfb4}
.hero-arc{font-family:var(--lat);font-size:clamp(13px,1.4vw,18px);letter-spacing:.25em;margin-top:30px;color:#8c7d72}
.scroll-hint{position:absolute;bottom:32px;left:50%;transform:translateX(-50%);text-align:center;color:#9a8c80;font-size:12px;letter-spacing:.3em}
.scroll-hint i{display:block;width:1px;height:48px;margin:10px auto 0;background:linear-gradient(#9a8c80,transparent);animation:drop 1.8s var(--ease) infinite}
@keyframes drop{0%{transform:scaleY(0);transform-origin:top}45%{transform:scaleY(1);transform-origin:top}55%{transform:scaleY(1);transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}
/* split 字 */
.char{display:inline-block;will-change:transform,opacity}

/* 长文 */
.prose-sec{position:relative;padding:clamp(90px,16vh,200px) clamp(24px,8vw,160px);max-width:1100px;margin:0 auto}
.prose-head{display:flex;align-items:baseline;gap:24px;margin-bottom:48px}
.prose-idx{font-family:var(--lat);font-size:clamp(60px,10vw,140px);font-weight:600;line-height:1;color:var(--hell-ac);opacity:.5}
.prose-head h2{font-size:clamp(30px,5vw,64px);font-weight:700;letter-spacing:.1em}
.prose-body{font-size:clamp(16px,1.5vw,20px);line-height:2.1;color:#cdbfb4;font-weight:300;white-space:pre-wrap;max-width:760px}
.epigraph{margin-top:60px;font-size:clamp(18px,2.4vw,28px);line-height:1.9;font-weight:300;color:var(--hell-ac);font-style:italic}
#postface .prose-idx,#postface .epigraph{color:var(--heav-ac)}

/* ===== 三篇诗墙 ===== */
.chapter{position:relative;padding:clamp(60px,10vh,120px) 0 clamp(80px,14vh,180px)}
.chapter-intro{position:relative;height:78vh;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;overflow:hidden}
.chapter-bigname{font-size:clamp(80px,22vw,360px);font-weight:900;line-height:.9;letter-spacing:.03em;white-space:nowrap;
  background:linear-gradient(180deg,currentColor,transparent 160%);-webkit-background-clip:text;background-clip:text}
.chapter-num{font-family:var(--lat);font-size:clamp(14px,1.6vw,22px);letter-spacing:.55em;opacity:.6;margin-bottom:18px}
.chapter-en{font-family:var(--lat);font-size:clamp(12px,1.3vw,16px);letter-spacing:.45em;opacity:.5;margin-top:18px;text-transform:uppercase}
.chapter-line{margin-top:30px;font-size:14px;letter-spacing:.3em;opacity:.55;font-weight:300}

.wall{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(18px,2.2vw,40px);
  max-width:1340px;margin:0 auto;padding:0 clamp(24px,5vw,80px);perspective:1600px}
.wall.cols-3{grid-template-columns:repeat(3,1fr);max-width:1040px}
.card{position:relative;cursor:none;transform-style:preserve-3d;will-change:transform,opacity}
.card-inner{position:relative;border-radius:6px;overflow:hidden;aspect-ratio:2/3;box-shadow:0 20px 50px rgba(0,0,0,.5);
  transition:transform .5s var(--ease),box-shadow .5s var(--ease)}
.card:hover .card-inner{box-shadow:0 44px 90px rgba(0,0,0,.7)}
.card-media{position:absolute;inset:-8%;overflow:hidden}             /* 比框略大，做内部视差 */
.card-media img{width:100%;height:100%;object-fit:cover;will-change:transform;transition:transform .8s var(--ease)}
.card:hover .card-media img{transform:scale(1.08)}                    /* Ken Burns */
.card-inner::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 52%,rgba(0,0,0,.8))}
.card-glare{position:absolute;inset:0;z-index:2;pointer-events:none;opacity:0;
  background:radial-gradient(circle at var(--mx,50%) var(--my,50%),rgba(255,255,255,.35),transparent 45%);transition:opacity .3s}
.card:hover .card-glare{opacity:1}
.card-cap{position:absolute;left:16px;right:16px;bottom:14px;z-index:3;color:#fff;transform:translateY(6px);opacity:.92}
.card-cap .t{font-size:clamp(15px,1.3vw,19px);font-weight:500}
.card-cap .r{font-family:var(--lat);font-size:11px;letter-spacing:.25em;opacity:.7;margin-top:3px}
.card-idx{position:absolute;top:12px;left:14px;z-index:3;font-family:var(--lat);font-size:13px;letter-spacing:.1em;color:rgba(255,255,255,.75)}

/* 页脚 */
#footer{position:relative;background:#f1ead9;color:#2c2620;text-align:center;padding:clamp(80px,14vh,160px) 24px clamp(50px,8vh,90px);z-index:10}
.foot-title{font-size:clamp(40px,9vw,120px);font-weight:900}
.foot-meta{margin-top:18px;font-size:15px;letter-spacing:.3em;color:#7a6f62}
.foot-copy{margin-top:50px;font-family:var(--lat);font-size:13px;letter-spacing:.2em;color:#9a8d7c}

/* 读诗弹层 */
#modal{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;visibility:hidden;opacity:0;transition:opacity .5s,visibility .5s}
#modal.open{visibility:visible;opacity:1}
.modal-bg{position:absolute;inset:0;background:rgba(6,4,6,.92);backdrop-filter:blur(10px)}
.modal-close{position:absolute;top:24px;right:28px;z-index:3;background:none;border:1px solid rgba(255,255,255,.4);color:#fff;width:46px;height:46px;border-radius:50%;font-size:18px;cursor:none}
.modal-close:hover{background:var(--hell-ac);border-color:var(--hell-ac)}
.modal-panel{position:relative;z-index:2;display:flex;gap:clamp(24px,4vw,64px);align-items:center;max-width:1000px;width:90%;max-height:86vh;transform:translateY(30px);transition:transform .6s var(--ease)}
#modal.open .modal-panel{transform:translateY(0)}
.modal-cover{flex:0 0 auto;width:min(34vw,320px)}
.modal-cover img{width:100%;border-radius:5px;box-shadow:0 30px 80px rgba(0,0,0,.6)}
.modal-text{flex:1;min-width:0;max-height:80vh;overflow-y:auto;padding-right:10px}
.modal-text::-webkit-scrollbar{width:5px}.modal-text::-webkit-scrollbar-thumb{background:rgba(255,255,255,.25);border-radius:3px}
.modal-sec{font-family:var(--lat);font-size:13px;letter-spacing:.4em;color:var(--hell-ac);text-transform:uppercase}
.modal-title{font-size:clamp(26px,3.4vw,44px);font-weight:700;margin:10px 0 28px;color:#fff}
.modal-body .ln{display:block;font-size:clamp(16px,1.5vw,19px);line-height:2.05;color:#d2c7bc;font-weight:300;white-space:pre-wrap;opacity:0;transform:translateY(12px)}

/* 响应式 */
@media (max-width:1100px){.wall{grid-template-columns:repeat(3,1fr)}}
@media (max-width:760px){
  .hero-portrait{left:50%;right:auto;top:42%;transform:translate(-50%,-50%);width:min(70vw,340px);opacity:.4}
  .hero-copy{text-align:center}.nav-links{gap:14px;font-size:12px}
  .wall,.wall.cols-3{grid-template-columns:repeat(2,1fr);gap:14px;padding:0 18px}
  .modal-panel{flex-direction:column;overflow-y:auto;padding:60px 0}.modal-cover{width:min(58vw,230px)}.modal-text{max-height:none}
  .prose-head{flex-direction:column;gap:6px}
}