/* =========================================================
   自律人生 · 沉淀的方法 — Skills (子页面 · 浅色版)
   Warm off-white · deepened brand teal accent
   ========================================================= */

:root{
  --bg:#F4F3EE;            /* warm off-white page */
  --surface:#FBFAF6;       /* slightly raised surfaces */
  --ink:#1A1812;           /* primary warm near-black text */
  --dim:rgba(26,24,18,0.56);
  --dimmer:rgba(26,24,18,0.34);
  --line:rgba(26,24,18,0.14);
  --line-soft:rgba(26,24,18,0.07);
  --panel:rgba(26,24,18,0.03);
  --accent:#00E0B8;        /* vivid mint — FILLS only, paired with dark text */
  --accent-ink:#0A7A61;    /* deep teal — text accents on light bg (legible) */
  --on-accent:#0E2A23;     /* dark text placed on vivid-mint fills */
  --max:1240px;
  --pad:40px;
  --mono:'Space Mono','Noto Sans SC',ui-monospace,monospace;
  --display:'Archivo Black','Noto Sans SC',system-ui,sans-serif;
  --body:'Noto Sans SC','Archivo',system-ui,sans-serif;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--body);line-height:1.6;
  font-synthesis:none;-webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none;}
img,svg{display:block;}
::selection{background:var(--accent);color:var(--on-accent);}

/* ---- fixed background texture: faint grid + drifting stripe ---- */
.bg-layer{position:fixed;inset:0;z-index:0;pointer-events:none;}
.bg-grid{position:absolute;inset:0;
  background-image:
    linear-gradient(to right,var(--line-soft) 1px,transparent 1px),
    linear-gradient(to bottom,var(--line-soft) 1px,transparent 1px);
  background-size:80px 80px;
  mask-image:radial-gradient(ellipse 120% 90% at 50% 0%,#000 30%,transparent 78%);
}
.bg-stripe{position:absolute;top:-12%;right:-8%;width:46vw;height:120vh;
  background:repeating-linear-gradient(-25deg,var(--accent) 0 7px,transparent 7px 30px);
  opacity:.16;transform:translateZ(0);
  mask-image:linear-gradient(to bottom left,#000,transparent 72%);
}

/* ---- shell ---- */
.shell{position:relative;z-index:1;}
.wrap{max-width:var(--max);margin:0 auto;padding-left:var(--pad);padding-right:var(--pad);}

/* ---- shared site chrome ---- */
.site-nav{position:relative;z-index:2;max-width:1200px;margin:0 auto;padding:24px var(--pad);
  display:flex;justify-content:space-between;align-items:center;gap:22px;}
.site-logo{font-family:'Archivo Black','Noto Sans SC',system-ui,sans-serif;font-size:16px;letter-spacing:4px;color:var(--ink);text-decoration:none;white-space:nowrap;}
.site-links{display:flex;gap:24px;align-items:center;font-family:'Archivo Black','Noto Sans SC',system-ui,sans-serif;
  font-size:11px;letter-spacing:2px;text-transform:uppercase;flex-wrap:wrap;justify-content:flex-end;}
.site-links a{color:var(--dim);text-decoration:none;}
.site-links a:hover,.site-links a[aria-current="page"]{color:var(--accent-ink);}
.site-footer{position:relative;z-index:1;background:#0A0A0A;color:#F5F7F6;padding:72px var(--pad) 48px;}
.site-footer-grid{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:2fr 1fr 1fr;gap:48px;border-top:1px solid rgba(255,255,255,.1);padding-top:48px;}
.site-footer .site-logo{color:#F5F7F6;}
.site-footer p{margin:16px 0 0;color:rgba(245,247,246,.6);font-size:14px;max-width:400px;}
.site-footer-links{font-family:'Archivo Black','Noto Sans SC',system-ui,sans-serif;font-size:11px;letter-spacing:2px;text-transform:uppercase;}
.site-footer-links a{display:block;color:rgba(245,247,246,.6);text-decoration:none;padding:8px 0;}
.site-footer-links a:hover{color:#00FFD1;}
.site-copyright{max-width:1200px;margin:48px auto 0;color:rgba(245,247,246,.6);font-size:13px;}

/* ---- mono label primitives ---- */
.mono{font-family:var(--mono);font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--dim);}
.mono-lime{color:var(--accent-ink);}

/* =================== HERO =================== */
.hero{padding-top:78px;padding-bottom:88px;position:relative;}
.hero-spec{display:flex;justify-content:space-between;align-items:flex-start;gap:24px;
  border-top:1px solid var(--line);padding-top:14px;margin-bottom:60px;flex-wrap:wrap;}
.hero-spec .col{font-family:var(--mono);font-size:11px;letter-spacing:.16em;color:var(--dimmer);text-transform:uppercase;}
.hero-spec .col b{display:block;color:var(--ink);margin-top:6px;letter-spacing:.1em;}
.hero h1{font-family:var(--display);font-weight:400;
  font-size:clamp(52px,9.2vw,138px);line-height:.92;letter-spacing:0;margin:0;}
.hero h1 em{font-style:normal;color:var(--accent-ink);}
.hero-lead{max-width:560px;margin:38px 0 0;font-size:clamp(16px,1.5vw,19px);color:var(--dim);line-height:1.75;}
.hero-lead b{color:var(--ink);font-weight:700;}
.hero-cta{margin-top:44px;display:flex;gap:14px;flex-wrap:wrap;}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:12px;cursor:pointer;border:none;
  font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  padding:16px 24px;transition:transform .2s ease,background .25s,color .25s,border-color .25s;}
.btn:active{transform:translateY(1px);}
.btn-primary{background:var(--accent);color:var(--on-accent);font-weight:700;}
.btn-primary:hover{background:#15efc8;}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--line);}
.btn-ghost:hover{border-color:var(--accent-ink);color:var(--accent-ink);}
.btn .arr{transition:transform .25s;}
.btn:hover .arr{transform:translate(3px,0);}
.btn-ghost:hover .arr{transform:translate(0,3px);}

/* hero ticker */
.ticker{margin-top:78px;border-block:1px solid var(--line);overflow:hidden;
  display:flex;white-space:nowrap;mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);}
.ticker-track{display:flex;flex:none;gap:0;animation:scroll 34s linear infinite;}
.ticker-track span{font-family:var(--display);font-size:15px;letter-spacing:.02em;
  padding:16px 0;color:var(--dim);}
.ticker-track .sep{color:var(--accent-ink);padding:16px 30px;}
@keyframes scroll{to{transform:translateX(-50%);}}

/* =================== INDEX =================== */
.section-head{display:flex;align-items:baseline;gap:18px;margin-bottom:44px;flex-wrap:wrap;}
.section-head h2{font-family:var(--display);font-weight:400;font-size:clamp(28px,3.4vw,44px);
  letter-spacing:0;margin:0;line-height:1;}
.section-head .num{font-family:var(--mono);font-size:12px;color:var(--accent-ink);letter-spacing:.2em;}
.index{padding-top:30px;padding-bottom:100px;}
.idx-row{display:grid;grid-template-columns:64px 1fr auto;gap:24px;align-items:center;
  padding:26px 0;border-top:1px solid var(--line);position:relative;cursor:pointer;
  transition:padding-left .35s cubic-bezier(.2,.7,.2,1),background .25s;}
.index .idx-row:last-child{border-bottom:1px solid var(--line);}
.idx-row::before{content:"";position:absolute;left:0;top:0;bottom:0;width:0;
  background:repeating-linear-gradient(-25deg,var(--accent-ink) 0 4px,transparent 4px 12px);
  opacity:0;transition:width .35s cubic-bezier(.2,.7,.2,1),opacity .35s;}
.idx-row:hover{padding-left:30px;}
.idx-row:hover::before{width:14px;opacity:.9;}
.idx-no{font-family:var(--mono);font-size:13px;color:var(--dimmer);letter-spacing:.1em;}
.idx-row:hover .idx-no{color:var(--accent-ink);}
.idx-main .name{font-family:var(--display);font-weight:400;font-size:clamp(22px,2.6vw,32px);
  letter-spacing:0;line-height:1.05;transition:color .25s;}
.idx-row:hover .idx-main .name{color:var(--accent-ink);}
.idx-main .id{font-family:var(--mono);font-size:11px;color:var(--dim);letter-spacing:.12em;margin-top:7px;}
.idx-meta{display:flex;align-items:center;gap:22px;}
.idx-tags{display:flex;gap:8px;}
.tag{font-family:var(--mono);font-size:10px;letter-spacing:.08em;color:var(--dim);
  border:1px solid var(--line);padding:5px 9px;text-transform:uppercase;}
.status{font-family:var(--mono);font-size:10px;letter-spacing:.14em;padding:5px 10px;text-transform:uppercase;white-space:nowrap;}
.status.shipped{background:var(--accent);color:var(--on-accent);font-weight:700;}
.status.draft{color:var(--dim);border:1px solid var(--line);}
.idx-arr{font-family:var(--mono);color:var(--dimmer);transition:transform .25s,color .25s;}
.idx-row:hover .idx-arr{color:var(--accent-ink);transform:translateX(4px);}
@media(max-width:820px){
  .idx-row{grid-template-columns:42px 1fr;gap:14px;}
  .idx-meta{display:none;}
}

@media(max-width:640px){
  :root{--pad:22px;}
  .site-nav{align-items:flex-start;flex-direction:column;}
  .site-links{justify-content:flex-start;gap:14px 18px;}
  .site-footer-grid{grid-template-columns:1fr;gap:28px;}
  .hero{padding-top:54px;padding-bottom:72px;}
  .hero-spec{display:grid;grid-template-columns:1fr 1fr;margin-bottom:46px;}
  .hero h1{font-size:clamp(44px,13vw,58px);line-height:1.02;}
  .hero-lead{margin-top:28px;}
  .hero-cta .btn{flex:1 1 148px;justify-content:center;padding-inline:16px;}
  .section-head .mono{margin-left:0 !important;}
}

/* =================== SKILL DETAIL =================== */
.skill{padding-top:88px;padding-bottom:88px;border-top:1px solid var(--line);position:relative;scroll-margin-top:28px;}
.skill-watermark{position:absolute;top:40px;right:var(--pad);font-family:var(--display);
  font-size:clamp(90px,16vw,230px);line-height:.8;color:transparent;
  -webkit-text-stroke:1px var(--line);z-index:0;pointer-events:none;user-select:none;}
.skill-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;position:relative;z-index:1;align-items:start;}
.skill-spec{font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:var(--dim);
  display:flex;gap:18px;flex-wrap:wrap;margin-bottom:26px;text-transform:uppercase;}
.skill-spec .s-id{color:var(--accent-ink);}
.skill h3{font-family:var(--display);font-weight:400;font-size:clamp(34px,4.6vw,60px);
  letter-spacing:0;line-height:.98;margin:0 0 24px;}
.skill .desc{font-size:17px;color:var(--dim);line-height:1.8;max-width:560px;}
.skill .desc + .desc{margin-top:16px;}
.skill-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:30px;}

/* invoke + downloads (right rail) */
.skill-aside{position:sticky;top:28px;display:flex;flex-direction:column;gap:18px;}
.invoke{border:1px solid var(--line);background:var(--surface);}
.invoke-bar{display:flex;align-items:center;gap:8px;padding:12px 14px;border-bottom:1px solid var(--line);}
.invoke-bar .dot{width:9px;height:9px;border-radius:50%;background:var(--line);}
.invoke-bar .dot.lime{background:var(--accent);}
.invoke-bar .lbl{font-family:var(--mono);font-size:10px;letter-spacing:.18em;color:var(--dim);margin-left:6px;text-transform:uppercase;}
.invoke-bar .copy{margin-left:auto;font-family:var(--mono);font-size:10px;letter-spacing:.12em;
  color:var(--dim);cursor:pointer;border:1px solid var(--line);padding:5px 9px;transition:.2s;text-transform:uppercase;}
.invoke-bar .copy:hover{color:var(--accent-ink);border-color:var(--accent-ink);}
.invoke-code{padding:18px 16px;font-family:var(--mono);font-size:13px;line-height:1.7;
  color:var(--ink);white-space:pre-wrap;word-break:break-word;}
.invoke-code .cmd{color:var(--accent-ink);font-weight:700;}
.dl-row{display:flex;gap:12px;flex-wrap:wrap;}
.dl-row .btn{flex:1;justify-content:center;min-width:140px;}
.aside-note{font-family:var(--mono);font-size:10px;letter-spacing:.08em;color:var(--dimmer);line-height:1.6;}

/* embedded live demo (flagship) */
.demo{margin-top:56px;position:relative;z-index:1;}
.demo-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:18px;flex-wrap:wrap;}
.demo-head .t{font-family:var(--display);font-size:20px;letter-spacing:0;}
.browser{border:1px solid var(--line);background:#fff;overflow:hidden;border-radius:10px;
  box-shadow:0 30px 70px rgba(26,24,18,.13);}
.browser-bar{display:flex;align-items:center;gap:8px;padding:13px 16px;
  background:var(--surface);border-bottom:1px solid var(--line);}
.browser-bar .dots{display:flex;gap:7px;}
.browser-bar .dots i{width:11px;height:11px;border-radius:50%;background:var(--line);}
.browser-url{margin-left:14px;flex:1;font-family:var(--mono);font-size:11px;color:var(--dim);
  background:rgba(26,24,18,.04);border:1px solid var(--line-soft);padding:6px 12px;letter-spacing:.04em;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.browser-bar .open{font-family:var(--mono);font-size:10px;letter-spacing:.12em;color:var(--accent-ink);
  border:1px solid var(--line);padding:6px 11px;text-transform:uppercase;transition:.2s;}
.browser-bar .open:hover{border-color:var(--accent-ink);}
.browser-body{height:560px;background:#f6f7f4;position:relative;}
.browser-body iframe{width:100%;height:100%;border:0;display:block;}
@media(max-width:880px){
  .skill-grid{grid-template-columns:1fr;gap:40px;}
  .skill-aside{position:static;}
  .browser-body{height:460px;}
}

/* project management preview */
.pm-preview{margin-top:56px;position:relative;z-index:1;}
.pm-board{display:grid;grid-template-columns:minmax(190px,.82fr) 84px minmax(260px,1.18fr) minmax(190px,.82fr);
  gap:18px;align-items:stretch;border:1px solid var(--line);background:var(--surface);padding:18px;}
.pm-column{border:1px solid var(--line);background:rgba(26,24,18,.025);padding:18px;min-height:260px;}
.pm-kicker{font-family:var(--mono);font-size:10px;letter-spacing:.18em;color:var(--accent-ink);}
.pm-column h4{font-family:var(--display);font-size:26px;line-height:1;margin:12px 0 18px;letter-spacing:0;}
.pm-column ul{list-style:none;padding:0;margin:0;display:grid;gap:12px;}
.pm-column li{font-size:14px;color:var(--dim);border-top:1px solid var(--line-soft);padding-top:10px;}
.pm-flow{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;}
.pm-flow span{width:38px;height:38px;border:1px solid var(--accent-ink);display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:11px;color:var(--accent-ink);background:var(--surface);}
.pm-flow i{width:1px;flex:1;min-height:30px;background:repeating-linear-gradient(to bottom,var(--accent-ink) 0 6px,transparent 6px 12px);}
.pm-center{display:grid;gap:12px;align-content:center;}
.pm-doc{border:1px solid var(--line);background:#fff;padding:16px;display:grid;gap:6px;}
.pm-doc.active{background:var(--accent);color:var(--on-accent);border-color:var(--accent);}
.pm-doc b{font-family:var(--mono);font-size:12px;letter-spacing:.08em;}
.pm-doc span{font-size:13px;color:var(--dim);}
.pm-doc.active span{color:rgba(14,42,35,.72);}
@media(max-width:920px){
  .pm-board{grid-template-columns:1fr;padding:14px;}
  .pm-flow{flex-direction:row;}
  .pm-flow i{height:1px;min-height:0;min-width:38px;background:repeating-linear-gradient(to right,var(--accent-ink) 0 6px,transparent 6px 12px);}
}

/* =================== MANIFESTO =================== */
.manifesto{background:var(--accent);color:var(--on-accent);padding:120px 0;position:relative;overflow:hidden;}
.manifesto .stripe{position:absolute;inset:0;
  background:repeating-linear-gradient(-25deg,rgba(14,42,35,.10) 0 7px,transparent 7px 30px);}
.manifesto .wrap{position:relative;}
.manifesto .m-kick{font-family:var(--mono);font-size:12px;letter-spacing:.24em;text-transform:uppercase;
  display:inline-flex;align-items:center;gap:9px;}
.manifesto .m-kick::before{content:"";width:7px;height:7px;background:var(--on-accent);}
.manifesto blockquote{margin:30px 0 0;font-family:var(--display);font-weight:400;
  font-size:clamp(40px,7vw,104px);line-height:.95;letter-spacing:0;max-width:14ch;}
.manifesto .m-foot{margin-top:46px;font-family:var(--mono);font-size:12px;letter-spacing:.1em;
  display:flex;gap:18px;flex-wrap:wrap;border-top:1px solid rgba(14,42,35,.22);padding-top:18px;}

/* =================== REVEAL =================== */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .8s cubic-bezier(.2,.7,.2,1),transform .8s cubic-bezier(.2,.7,.2,1);}
.reveal.in{opacity:1;transform:none;}
.reveal.d1{transition-delay:.08s;}
.reveal.d2{transition-delay:.16s;}
.reveal.d3{transition-delay:.24s;}
/* safety: kill transitions once intro window passes so nothing can freeze hidden */
html.anim-off .reveal{transition:none !important;}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:none;}
  .ticker-track{animation:none;}
  .btn,.idx-row,.idx-arr{transition:none;}
}