/* Self-hosted fonts.
   Boska & Switzer: official Fontshare WOFF2 files, unmodified (ITF Free Font License).
   SFT Serif SC: subset of Source Han Serif CN, renamed per SIL OFL 1.1. */
@font-face{font-family:"Boska";src:url("assets/fonts/Boska-Light.woff2") format("woff2");font-weight:300;font-display:swap}
@font-face{font-family:"Boska";src:url("assets/fonts/Boska-Bold.woff2") format("woff2");font-weight:700;font-display:swap}
@font-face{font-family:"Switzer";src:url("assets/fonts/Switzer-Light.woff2") format("woff2");font-weight:300;font-display:swap}
@font-face{font-family:"Switzer";src:url("assets/fonts/Switzer-Regular.woff2") format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"Switzer";src:url("assets/fonts/Switzer-Medium.woff2") format("woff2");font-weight:500;font-display:swap}
@font-face{font-family:"SFT Serif SC";src:url("assets/fonts/SFTSerifSC-Light.woff") format("woff");font-weight:300;font-display:swap}
@font-face{font-family:"SFT Serif SC";src:url("assets/fonts/SFTSerifSC-Bold.woff") format("woff");font-weight:700;font-display:swap}

/* Colors & type follow 个人网站配色与字体规范 (2026.10.02) */
:root{
  --bg:#0E0E0E;        /* 主背景 */
  --raised:#181818;    /* 卡片 / 次级区块 */
  --gold:#D6C3A5;      /* 标题 / 重点链接 / 强调 */
  --text:#E0DDD7;      /* 长段正文 */
  --muted:#B8AA95;     /* 次要说明 / 中文姓名 */
  --line:#2A2A2A;      /* 分隔线 */
  --font:"Switzer",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;
  --font-cn:"SFT Serif SC","Songti SC","STSong","SimSun",serif;
  --display:"Boska","SFT Serif SC","Songti SC","STSong",Georgia,serif;
  --wrap:1180px;--gutter:clamp(1.25rem,4vw,3rem);
  color-scheme:dark;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font);font-size:1.0625rem;font-weight:400;letter-spacing:0;line-height:1.6;overflow-x:hidden}
img,video,iframe{max-width:100%;display:block}
a{color:inherit}
a:focus-visible,button:focus-visible{outline:2px solid var(--gold);outline-offset:3px}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--gutter)}

/* Header */
.site-header{position:sticky;top:0;z-index:10;background:rgba(14,14,14,.92);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.site-header .wrap{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:.5rem 1.5rem;padding-top:1.4rem;padding-bottom:1.4rem}
.brand{color:var(--gold);font-weight:400;font-size:1.125rem;letter-spacing:3px;text-transform:uppercase;text-decoration:none}
.nav{display:flex;flex-wrap:wrap;gap:.25rem 2.25rem}
.nav a{text-decoration:none;color:var(--gold);font-size:1.125rem;font-weight:300;letter-spacing:3px;text-transform:uppercase}
.nav a:hover{color:var(--text)}
.nav a[aria-current="page"]{color:var(--gold);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:.5em}

/* Home hero */
.hero{position:relative;min-height:min(88vh,860px);display:flex;align-items:stretch;overflow:hidden;background:var(--bg)}
.hero video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(14,14,14,.96) 0%,rgba(14,14,14,.55) 45%,rgba(14,14,14,.2) 100%)}
.hero .wrap{position:relative;z-index:1;width:100%;display:flex;flex-direction:column;justify-content:flex-end;padding-top:6rem;padding-bottom:clamp(2.5rem,6vw,5rem)}
.hero h1{color:var(--gold);font-family:var(--display);font-size:clamp(2.75rem,7.5vw,6rem);font-weight:300;line-height:1.02;letter-spacing:-.01em;margin:0}
.cn-name{position:absolute;z-index:1;right:var(--gutter);top:clamp(1.75rem,4vw,3rem);margin:0;color:var(--muted);font-family:var(--font-cn);font-weight:300;writing-mode:vertical-rl;font-size:clamp(1.3rem,2.6vw,2.1rem);letter-spacing:.4em}
.role{font-size:clamp(1.05rem,1.8vw,1.3rem);line-height:1.45;margin:1.25rem 0 0;max-width:38ch;color:var(--text)}
.actions{display:flex;flex-wrap:wrap;gap:.75rem;margin-top:1.75rem}
.btn{display:inline-block;padding:.75rem 1.3rem;border:1px solid var(--gold);color:var(--gold);text-decoration:none;font-weight:500;font-size:.95rem;letter-spacing:.02em;line-height:1.2}
.btn:hover{border-color:var(--text);color:var(--text)}
.btn-primary{background:var(--gold);color:var(--bg)}
.btn-primary:hover{background:var(--text);border-color:var(--text);color:var(--bg)}

/* Inner page head */
.page-head{padding-top:clamp(3rem,7vw,5.5rem);padding-bottom:clamp(2rem,4vw,3rem)}
.page-head h1{color:var(--gold);font-family:var(--display);font-size:clamp(2.6rem,7vw,5.25rem);font-weight:300;line-height:1;letter-spacing:-.01em;margin:0}
.page-head .sub{color:var(--muted);font-size:1.1rem;margin:.9rem 0 0;max-width:60ch}

/* Sections & type */
.section{padding:clamp(3.5rem,8vw,6.5rem) 0;border-top:1px solid var(--line)}
.section-head{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:.5rem 1rem;margin-bottom:2rem}
h2{color:var(--gold);font-family:var(--display);font-size:clamp(1.6rem,3vw,2.25rem);font-weight:700;line-height:1.15;letter-spacing:.01em;margin:0}
h3{color:var(--gold);font-family:var(--display);font-size:1.35rem;font-weight:700;line-height:1.25;letter-spacing:.01em;margin:0 0 .4rem}
.text-link{color:var(--gold);text-underline-offset:.3em}
.text-link:hover{color:var(--text)}
.lead{font-size:1.15rem;line-height:1.6;max-width:58ch;margin:0 0 1rem}
.muted{color:var(--muted)}

/* Work grid */
.work{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:3rem 2rem}
.work-item.feature{grid-column:1/-1}
.work-item > a{display:block;text-decoration:none}
.work-item > a:hover h3{text-decoration:underline;text-underline-offset:.25em}
.thumb{aspect-ratio:16/9;overflow:hidden;background:var(--raised)}
.thumb img{width:100%;height:100%;object-fit:cover}
.work-item .kind{color:var(--muted);font-size:.9rem;margin:1rem 0 .2rem}
.work-item p.desc{margin:0;max-width:60ch;color:var(--text)}
.work-item.feature h3{font-size:clamp(1.5rem,2.6vw,2rem)}

/* Video facade */
.player{position:relative;aspect-ratio:16/9;background:var(--raised);overflow:hidden}
.player img{width:100%;height:100%;object-fit:cover;opacity:.85}
.player button{position:absolute;inset:0;width:100%;height:100%;background:transparent;border:0;cursor:pointer;display:flex;align-items:center;justify-content:center;padding:0}
.player .play{display:inline-flex;align-items:center;gap:.6rem;padding:.8rem 1.3rem;background:rgba(14,14,14,.82);border:1px solid var(--gold);color:var(--gold);font:500 .95rem/1 var(--font)}
.player button:hover .play{border-color:var(--text);color:var(--text)}
.player iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.player-alt{font-size:.875rem;color:var(--muted);margin:.6rem 0 0}

/* Case pages */
.facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:1.5rem 2rem;margin:2.5rem 0 0}
.facts dt{color:var(--muted);font-size:.875rem;margin-bottom:.25rem}
.facts dd{margin:0}
.prose{max-width:70ch}
.prose h2{margin:3.5rem 0 1rem}
.prose h2:first-child{margin-top:0}
.prose p,.prose ul{margin:0 0 1rem}
.next{display:flex;flex-wrap:wrap;justify-content:space-between;gap:1rem;align-items:baseline}

/* Placeholders to fill in: search for 待补充 */
.todo{border:1px dashed var(--gold);background:var(--raised);padding:1rem 1.25rem;color:var(--muted);margin:0 0 1rem;font-size:.95rem;max-width:70ch}
.todo strong{color:var(--gold);font-weight:500}

/* Tables */
.table-scroll{overflow-x:auto}
.breakdown{width:100%;min-width:560px;border-collapse:collapse;font-size:.95rem}
.breakdown th,.breakdown td{text-align:left;padding:.75rem .6rem;border-bottom:1px solid var(--line);vertical-align:top}
.breakdown th{color:var(--muted);font-weight:400}
.breakdown td:first-child{white-space:nowrap;font-variant-numeric:tabular-nums}

/* About */
.about-grid{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(0,1fr);gap:2.5rem 4rem}
.focus-list{list-style:none;padding:0;margin:0}
.focus-list li{padding:.6rem 0;border-bottom:1px solid var(--line)}
.contact-list{list-style:none;padding:0;margin:0 0 1.5rem}
.contact-list li{margin:0 0 .5rem}
.contact-list a{color:var(--gold);text-underline-offset:.3em}

/* Footer */
.site-footer{border-top:1px solid var(--line);padding:2.5rem 0;color:var(--muted);font-size:.875rem}
.site-footer .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:.75rem 1.5rem}
.site-footer a{text-underline-offset:.3em}

@media (max-width:760px){
  .work,.about-grid{grid-template-columns:1fr}
  .hero{min-height:78vh}
  .site-header .wrap{padding-top:1rem;padding-bottom:1rem}
  .brand{font-size:.9rem;letter-spacing:2px}
  .nav{gap:.25rem 1.1rem}
  .nav a{font-size:.75rem;letter-spacing:1.2px;font-weight:400}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}

/* Project-stills banner under the header on inner pages */
.banner{background:var(--raised);border-bottom:1px solid var(--line)}
.banner img{width:100%;height:auto}

/* Projects / Reel: centered title, film, short description */
.proj-list{padding-bottom:clamp(2rem,5vw,4rem)}
.proj{padding-top:clamp(3rem,7vw,5.5rem)}
.proj-head{text-align:center;margin-bottom:clamp(1.5rem,3vw,2.25rem)}
.proj-head h2{font-size:clamp(1.9rem,3.4vw,2.6rem);letter-spacing:.03em}
.proj-kind{color:var(--gold);font-weight:500;font-size:1.05rem;margin:.6rem 0 0}
.proj .player-alt{text-align:center}
.proj-desc{text-align:center;max-width:62ch;margin:1.25rem auto 0}

/* Header right side: nav + language switch */
.header-right{display:flex;flex-wrap:wrap;align-items:baseline;gap:.4rem 2.25rem}
.lang{display:flex;align-items:baseline;gap:.5rem;padding-left:2.25rem;border-left:1px solid var(--line);font-size:.875rem;letter-spacing:1px}
.lang a{text-decoration:none;color:var(--muted)}
.lang a:hover{color:var(--text)}
.lang a[aria-current="true"]{color:var(--gold)}
.lang span{color:var(--line)}

/* Chinese pages: Switzer for Latin, system Chinese sans for body text; titles use SFT Serif SC via --display */
:root:lang(zh-CN){--font:"Switzer","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif}
:lang(zh-CN) .hero h1{letter-spacing:.12em}
:lang(zh-CN) .nav a{letter-spacing:4px}
.cn-name.latin{font-family:var(--font);text-transform:uppercase;letter-spacing:.35em;font-size:clamp(.85rem,1.3vw,1.05rem)}

/* Player placeholder while the Bilibili upload is pending */
.play-wrap{position:absolute;inset:0;display:flex;align-items:center;justify-content:center}
.play.muted{color:var(--muted);border-color:var(--line)}

@media (max-width:760px){
  .header-right{gap:.4rem 1.1rem;width:100%;justify-content:space-between}
  .lang{padding-left:0;border-left:0;font-size:.75rem}
}
:lang(zh-CN) .proj-head h2{letter-spacing:.12em}