@font-face {
  font-family: CoverLettering;
  src: url("assets/cover-lettering.font");
  font-display: swap;
}

/* ========== 基础 ========== */
:root {
  --bg:#0d0e0d; --bg2:#161715; --ink:#ece7dc; --soft:#b8b3a7; --muted:#7d796f;
  --line:#ffffff1c; --accent:#c9a56f;
  --gutter:clamp(20px,4.5vw,72px);
  --serif:Georgia,"Noto Serif SC","Source Han Serif SC","Songti SC","STSong",SimSun,serif;
  --sans:"Helvetica Neue","PingFang SC","Microsoft YaHei UI","Microsoft YaHei",system-ui,sans-serif;
  --ease:cubic-bezier(.2,.7,.2,1);
}
* {box-sizing:border-box}
html {background:var(--bg)}

/* Per-series accent colors (approved by momo 2026-11-12) */
body[data-series-slug="court"] { --accent:#e85d3d; }
body[data-series-slug="portrait"] { --accent:#e8a798; }
body[data-series-slug="landscape"] { --accent:#5ba8a0; }
body[data-series-slug="travel"] { --accent:#c9a56f; }

body {margin:0;background:var(--bg);color:var(--ink);font:15px/1.7 var(--sans);-webkit-font-smoothing:antialiased}
a {color:inherit;text-decoration:none}
a:focus-visible,button:focus-visible {outline:2px solid var(--accent);outline-offset:4px}
img {display:block;max-width:100%}
figure {margin:0}
h1,h2,h3 {margin:0;font-weight:400}
::selection {background:var(--accent);color:#111}
.eyebrow {margin:0 0 18px;font:500 12px/1 var(--sans);letter-spacing:.32em;color:var(--accent)}

/* ========== 顶栏 ========== */
.site-header {position:fixed;inset:0 0 auto;z-index:10;display:flex;align-items:center;justify-content:space-between;gap:24px;height:76px;padding-inline:var(--gutter);border-bottom:1px solid transparent;transition:height .4s var(--ease),background .4s,border-color .4s}
.site-header.solid,.album-page .site-header {height:60px;background:#0d0e0dd9;border-color:var(--line);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}
.brand {font:400 19px/1 var(--serif);letter-spacing:.04em;white-space:nowrap}
.site-header nav {display:flex;gap:clamp(16px,2.4vw,36px)}
.site-header nav a {position:relative;padding-block:10px;font-size:13px;letter-spacing:.16em;color:var(--soft);transition:color .25s}
.site-header nav a:hover,.site-header nav a[aria-current] {color:var(--ink)}
.site-header nav a::after {content:"";position:absolute;left:0;right:0;bottom:4px;height:1px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .35s var(--ease)}
.site-header nav a:hover::after,.site-header nav a[aria-current]::after {transform:scaleX(1)}
.nav-all {display:none}

/* ========== 首页 · 开场大图 ========== */
.opening {position:relative;height:100svh;min-height:560px;overflow:hidden;color:#fff}
.window {position:absolute;inset:0;overflow:hidden;background:#1d2224}
.drift,.pointer,.window img {width:100%;height:100%}
.window img {object-fit:cover;object-position:51% 30%}
.window::after {content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(180deg,#000a 0%,#0000 24%,#0000 46%,#0d0e0dc0 82%,var(--bg) 100%)}
.hero-copy {position:absolute;z-index:2;left:var(--gutter);right:var(--gutter);bottom:clamp(110px,18vh,190px);pointer-events:none}
.opening h1 {font:400 clamp(40px,6.2vw,100px)/1.1 var(--serif);letter-spacing:.03em;text-shadow:0 2px 40px #0006}
.legend {position:absolute;z-index:2;inset:auto 0 0;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;padding:0 var(--gutter) clamp(26px,4.5vh,46px);pointer-events:none}
.legend a {pointer-events:auto}
.entry {justify-self:start;padding:13px 28px;border:1px solid #ffffff70;border-radius:999px;background:#ffffff0d;font-size:13px;letter-spacing:.22em;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);transition:background .3s,color .3s,border-color .3s}
.entry:hover {background:#fff;color:#111;border-color:#fff}
.credit {justify-self:end;display:flex;align-items:center;gap:.9em;font-size:13px;letter-spacing:.18em;color:#ffffffcc}
.credit i {width:2em;border-top:1px solid currentColor;opacity:.7}
.cue {display:grid;place-items:center;width:44px;height:44px;transition:opacity .32s}
.cue span {width:14px;height:14px;border:solid currentColor;border-width:0 1px 1px 0;transform:rotate(45deg)}
.has-scrolled .cue:not(:focus-visible) {opacity:0;pointer-events:none}

/* ========== 首页 · 系列作品 ========== */
.works {padding:clamp(72px,12vh,140px) var(--gutter)}
.section-head {display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:1400px;margin:0 auto clamp(44px,7vh,80px);padding-bottom:24px;border-bottom:1px solid var(--line)}
.section-head .eyebrow {margin-bottom:14px}
.section-head h2 {font:400 clamp(34px,4.2vw,64px)/1.1 var(--serif);letter-spacing:.03em}
.section-head > p {margin:0;color:var(--muted);font-size:13px;letter-spacing:.2em;white-space:nowrap}
.plates {max-width:1400px;margin:0 auto;display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(56px,9vh,100px) clamp(20px,2.6vw,44px);align-items:start}
.card {display:block;min-width:0;scroll-margin-top:90px}
.card.court {grid-column:1/6}
.card.portrait {grid-column:6/13;margin-top:clamp(60px,16vh,180px)}
.card.landscape {grid-column:1/8}
.card.travel {grid-column:8/13;margin-top:clamp(40px,10vh,120px)}
.frame {position:relative;overflow:hidden;background:var(--bg2)}
.court .frame {height:clamp(420px,76vh,820px)}
.portrait .frame,.landscape .frame {height:clamp(300px,52vh,560px)}
.travel .frame {height:clamp(360px,64vh,700px)}
.card img {width:100%;height:100%;object-fit:cover;filter:brightness(.86);transition:transform 1.4s var(--ease),filter .6s}
.court img {object-position:50% 20%}
.card:hover img {transform:scale(1.045);filter:brightness(1)}
.card figcaption {display:grid;grid-template-columns:auto 1fr auto;align-items:baseline;gap:6px 18px;padding-top:20px}
.num {grid-row:span 2;font:italic 15px/1 Georgia,serif;color:var(--accent)}
.card h3 {font:400 clamp(22px,2vw,30px)/1.25 var(--serif);letter-spacing:.06em}
.count {font-size:12px;letter-spacing:.18em;color:var(--muted);white-space:nowrap;transition:color .3s}
.count b {display:inline-block;font-weight:400;margin-left:.4em;transition:transform .35s var(--ease)}
.card:hover .count {color:var(--accent)}
.card:hover .count b {transform:translateX(5px)}
.card small {grid-column:2/-1;font:16px/1.5 CoverLettering,var(--serif);color:var(--soft)}

/* ========== 页脚 ========== */
.site-footer {padding:clamp(56px,10vh,110px) var(--gutter) 30px;border-top:1px solid var(--line)}
.footer-mark {margin:0 0 clamp(36px,6vh,64px);font:400 clamp(40px,9vw,140px)/1 var(--serif);letter-spacing:.01em;color:#ece7dc26}
.footer-row {display:flex;justify-content:space-between;gap:16px;font-size:13px;letter-spacing:.12em;color:var(--muted)}
.footer-row a {transition:color .25s}
.footer-row a:hover {color:var(--ink)}

/* ========== 系列页 ========== */
.album {position:relative;isolation:isolate;overflow:clip;padding:calc(60px + clamp(56px,11vh,130px)) var(--gutter) 0}
.album::before {content:"";position:absolute;inset:-80px -80px auto;height:80vh;z-index:-1;pointer-events:none;background:var(--album-cover) center/cover;filter:blur(70px) saturate(1.15);opacity:.32;-webkit-mask-image:linear-gradient(#000 30%,transparent);mask-image:linear-gradient(#000 30%,transparent)}
.album-heading {max-width:1600px;margin:0 auto clamp(44px,8vh,96px)}
.album-heading h1 {font:400 clamp(48px,7.2vw,116px)/1.05 var(--serif);letter-spacing:.04em}
.album-heading .lede {max-width:32em;margin:22px 0 0;font-size:clamp(15px,1.2vw,18px);color:var(--soft)}
.album-heading .meta {margin:26px 0 0;padding-top:18px;border-top:1px solid var(--line);font-size:12px;letter-spacing:.2em;color:var(--muted)}

/* 等高拼贴：每张照片按自身比例分配宽度，同一行高度一致 */
.grid {--row:360px;max-width:1600px;margin:0 auto;display:flex;flex-wrap:wrap;align-items:flex-start;gap:clamp(10px,1.2vw,18px)}
.grid::after {content:"";flex:999 1 0}
.print {position:relative;flex:var(--r) 1 calc(var(--r) * var(--row));min-width:0;overflow:hidden;background:var(--bg2)}
.print a {display:block;overflow:hidden;cursor:zoom-in}
.print img {width:100%;height:auto;aspect-ratio:var(--r);object-fit:cover;transition:transform 1.2s var(--ease),filter .5s}
.print:hover img {transform:scale(1.035)}
.print figcaption {position:absolute;inset:auto 0 0;padding:56px 20px 16px;background:linear-gradient(transparent,#000b);pointer-events:none;opacity:0;transform:translateY(8px);transition:opacity .45s var(--ease),transform .45s var(--ease)}
.print:hover figcaption,.print:focus-within figcaption {opacity:1;transform:none}
.print figcaption strong {display:block;font:400 18px/1.4 var(--serif);letter-spacing:.08em}
.print figcaption span {display:block;margin-top:2px;font-size:13px;color:#ddd6c8}

.end {max-width:1600px;margin:clamp(72px,12vh,140px) auto 0;padding:40px 0 clamp(56px,10vh,110px);border-top:1px solid var(--line);display:flex;justify-content:space-between;align-items:flex-end;gap:24px}
.end .back {font-size:13px;letter-spacing:.16em;color:var(--soft);transition:color .25s}
.end .back:hover {color:var(--ink)}
.end .next {text-align:right}
.end .next small {display:block;margin-bottom:12px;font-size:12px;letter-spacing:.3em;color:var(--accent)}
.end .next span {font:400 clamp(28px,4vw,60px)/1.1 var(--serif);letter-spacing:.04em;transition:color .3s}
.end .next:hover span {color:var(--accent)}

/* ========== 大图浏览 ========== */
.scroll-locked {overflow:hidden}
.lightbox {inset:0;margin:0;border:0;width:100vw;max-width:none;height:100dvh;max-height:none;padding:0;overflow:hidden;isolation:isolate;color:#fff;background:#080908}
.lightbox[open] {display:grid;grid-template-rows:auto minmax(0,1fr) auto auto}
.lightbox::before {content:"";position:absolute;inset:-80px;z-index:-1;background:var(--ambient) center/cover;filter:blur(80px);opacity:.22;pointer-events:none;transition:background-image .5s}
.lightbox::backdrop {background:#000}
.lightbox-bar {display:flex;align-items:center;justify-content:space-between;padding:14px var(--gutter)}
.lightbox-counter {font:italic 14px Georgia,serif;letter-spacing:.14em;color:var(--soft)}
.lightbox button {min-width:44px;min-height:44px;padding:0 18px;border:1px solid #ffffff2e;border-radius:999px;background:#ffffff0f;color:inherit;font:13px var(--sans);letter-spacing:.12em;cursor:pointer;transition:background .25s,border-color .25s}
.lightbox button:hover {background:#ffffff24;border-color:#ffffff70}
.lightbox-stage {position:relative;min-height:0;display:grid;place-items:center;touch-action:pan-y pinch-zoom}
.lightbox-image {width:86%;height:100%;min-height:0;padding-block:6px;object-fit:contain;transition:opacity .4s var(--ease)}
.lightbox-image.loading {opacity:0}
.lightbox-prev,.lightbox-next {position:absolute;top:50%;z-index:1;transform:translateY(-50%);width:54px;height:54px;padding:0 !important;font-size:18px !important}
.lightbox-prev {left:2vw}.lightbox-next {right:2vw}
.lightbox-caption {padding:6px 16px 14px;text-align:center}
.lightbox-title {font:400 22px/1.3 var(--serif);letter-spacing:.1em}
.lightbox-location:not(:empty) {display:block;margin-top:4px;font-size:12px;letter-spacing:.2em;color:var(--accent)}
.thumbs {display:flex;gap:8px;justify-content:safe center;overflow-x:auto;padding:12px 12px max(14px,env(safe-area-inset-bottom));scrollbar-width:none}
.lightbox .thumbs button {flex:none;width:66px;height:46px;min-height:0;padding:0;border:1px solid transparent;border-radius:2px;background:none;overflow:hidden;opacity:.4;transition:opacity .25s,border-color .25s}
.lightbox .thumbs button:hover {opacity:.8}
.lightbox .thumbs [aria-pressed=true] {opacity:1;border-color:var(--accent)}
.thumbs img {width:100%;height:100%;object-fit:cover}
.lightbox-error {position:absolute;top:40%;left:50%;transform:translateX(-50%);padding:12px 18px;background:#222;border-radius:4px}

/* ========== 中等屏幕 ========== */
@media (max-width:1100px) {
  .grid {--row:280px}
}

/* ========== 手机 ========== */
@media (max-width:700px) {
  .site-header,.site-header.solid,.album-page .site-header {height:56px}
  .brand {font-size:17px}
  .site-header nav a {display:none}
  .site-header nav a.nav-all {display:inline-block}
  .opening {height:88svh;min-height:480px}
  .hero-copy {bottom:110px}
  .opening h1 {font-size:clamp(34px,10vw,46px)}
  .legend {grid-template-columns:auto 1fr;gap:12px;padding-bottom:28px}
  .cue {display:none}
  .entry {padding:11px 18px;font-size:12px;letter-spacing:.14em}
  .credit {font-size:12px;letter-spacing:.1em;gap:.5em}
  .credit i {width:1em}
  .section-head {flex-direction:column;align-items:flex-start;gap:8px}
  .plates {display:flex;flex-direction:column;gap:56px}
  .card,.card.portrait,.card.travel {margin-top:0}
  .court .frame,.travel .frame {height:auto;aspect-ratio:4/5}
  .portrait .frame,.landscape .frame {height:auto;aspect-ratio:3/2}
  .card small {font-size:15px}
  .footer-row {flex-direction:column}
  .album {padding-top:110px}
  .grid {gap:28px}
  .print {flex-basis:100%}
  .end {flex-direction:column;align-items:flex-start}
  .end .next {text-align:left}
  .lightbox-image {width:100%;padding-bottom:64px}
  .lightbox-prev,.lightbox-next {top:auto;bottom:6px;transform:none}
  .lightbox-prev {left:16px}.lightbox-next {right:16px}
}

/* 触屏没有鼠标悬停，照片标题直接显示在下方 */
@media (hover:none) {
  .print {overflow:visible;background:none}
  .print figcaption {position:static;opacity:1;transform:none;background:none;padding:12px 2px 0}
  .card img {filter:none}
}

/* ========== 动效（系统开启“减少动态效果”时自动关闭） ========== */
@media (prefers-reduced-motion:no-preference) {
  html {scroll-behavior:smooth}
  .drift {transform:translateY(var(--scroll,0px))}
  .pointer {transform:translate(var(--x,0px),var(--y,0px));transition:transform .35s ease-out}
  .window img {animation:breathe 14s ease-in-out infinite alternate}
  .cue span {animation:beckon 2.4s ease-in-out infinite}
  .hero-copy,.legend {animation:rise 1.2s var(--ease) .15s backwards}
  .legend {animation-delay:.45s}
  .arrive {animation:arrive .9s var(--ease) backwards}
  .lightbox[open] {animation:fade .35s ease-out}
  @keyframes breathe {from{transform:scale(1.02)}to{transform:scale(1.07)}}
  @keyframes beckon {50%{transform:translateY(5px) rotate(45deg)}}
  @keyframes rise {from{opacity:0;transform:translateY(24px)}}
  @keyframes arrive {from{opacity:0;transform:translateY(28px)}}
  @keyframes fade {from{opacity:0}}
}

/* ========== 空状态（数据层新增） ========== */
.frame-empty {display:grid;place-items:center}
.frame-empty-text {font-size:13px;letter-spacing:.22em;color:var(--muted)}
.grid-empty {flex:1 0 100%;padding:clamp(48px,9vh,96px) 0;text-align:center;font-size:14px;letter-spacing:.18em;color:var(--muted)}
/* 首页 .plates 是 12 列网格，失败/空提示须横跨整行，否则只占 1/12 宽 */
.plates > .grid-empty, .plates > .grid-error {grid-column:1 / -1}
.grid-error {flex:1 0 100%;padding:clamp(48px,9vh,96px) 0;text-align:center}
.grid-error p {margin:0 0 22px;font-size:14px;letter-spacing:.18em;color:var(--muted)}
.grid-error .retry {font:inherit;font-size:13px;letter-spacing:.22em;color:var(--ink);background:transparent;border:1px solid var(--line);padding:10px 24px;cursor:pointer;transition:border-color .25s,color .25s}
.grid-error .retry:hover {border-color:var(--accent);color:var(--accent)}