:root{
  --bg:#f7f7f4;--surface:#fff;--text:#151515;--muted:#777;--line:#deded8;
  --accent:#151515;--shadow:0 12px 40px rgba(0,0,0,.05);--radius:22px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.55}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
button{cursor:pointer}
.site-header{max-width:1120px;margin:auto;padding:24px 24px 18px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{font-weight:800;letter-spacing:.12em;font-size:14px}
.nav{display:flex;align-items:center;gap:20px;font-size:13px}
.nav a{color:var(--muted);transition:color .2s}
.nav a:hover,.nav a.active{color:var(--text)}
.icon-btn{border:1px solid var(--line);background:transparent;border-radius:999px;width:34px;height:34px;color:var(--text)}
.home,.page{max-width:1120px;margin:auto;padding:54px 24px 100px}
.hero{min-height:54vh;display:flex;flex-direction:column;justify-content:center;padding:60px 0}
.eyebrow{text-transform:uppercase;letter-spacing:.16em;font-size:11px;font-weight:700;color:var(--muted);margin:0 0 14px}
.hero h1{font-size:clamp(64px,13vw,150px);letter-spacing:-.07em;line-height:.86;margin:0 0 24px;font-weight:800}
.lead{font-size:clamp(18px,3vw,28px);max-width:620px;color:#4e4e4e;margin:0 0 26px}
.clock{font-variant-numeric:tabular-nums;font-size:clamp(32px,6vw,64px);letter-spacing:-.04em;font-weight:600}
.meta-row{display:flex;gap:10px;flex-wrap:wrap;color:var(--muted);font-size:13px;margin-top:10px}
.dot{opacity:.4}
.section-heading{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:18px}
.section-heading h2,.page h2{margin:0;font-size:clamp(25px,4vw,38px);letter-spacing:-.035em}
.weather-current{display:flex;justify-content:space-between;align-items:center;gap:30px;padding:28px;margin-bottom:14px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.weather-icon{font-size:30px}
.current-temp{font-size:58px;font-weight:700;letter-spacing:-.06em;line-height:1}
.current-details{display:flex;gap:26px;flex-wrap:wrap;color:var(--muted);font-size:13px}
.current-details b{color:var(--text)}
.muted{color:var(--muted)}
.forecast-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.forecast-card{padding:22px;min-height:145px}
.forecast-day{font-weight:700;margin-bottom:12px}
.forecast-icon{font-size:28px;margin-bottom:7px}
.forecast-temp{font-size:18px;font-weight:700}
.forecast-rain{font-size:12px;color:var(--muted);margin-top:6px}
.hourly-card{padding:24px;margin-top:14px}
.chart-heading{margin-bottom:10px}
.chart-heading h3,.elevation-card h3{margin:0;font-size:19px;letter-spacing:-.025em}
.chart-unit{font-size:13px;color:var(--muted)}
.hourly-chart{width:100%;min-width:0;overflow:hidden}
.temperature-svg{display:block;width:100%;height:auto;overflow:visible}
.chart-gridline{stroke:var(--line);stroke-width:1;stroke-dasharray:3 5}
.chart-axis-label{fill:var(--muted);font-size:12px}
.chart-line{fill:none;stroke:var(--text);stroke-width:2.8;stroke-linecap:round;stroke-linejoin:round;vector-effect:non-scaling-stroke}
.chart-dot{fill:var(--text);stroke:var(--surface);stroke-width:1.5}
.chart-fill-top{stop-color:var(--text);stop-opacity:.15}
.chart-fill-bottom{stop-color:var(--text);stop-opacity:0}
.chart-legend{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;color:var(--muted);font-size:12px;margin-top:2px}
.chart-legend span:first-child{display:flex;align-items:center;gap:7px}
.chart-legend i{display:inline-block;width:16px;height:3px;border-radius:4px;background:var(--text)}
.elevation-card{display:flex;align-items:center;gap:18px;padding:22px;margin-top:14px}
.elevation-symbol{display:grid;place-items:center;flex:0 0 46px;height:46px;border:1px solid var(--line);border-radius:50%;font-size:25px;color:var(--muted)}
.elevation-card .eyebrow{margin:0 0 5px}
.elevation-value{font-size:20px;font-weight:700;margin:8px 0 0}
.elevation-card .tiny-note{margin:4px 0 0}
.skeleton{height:145px;border:1px solid var(--line);border-radius:var(--radius);background:linear-gradient(90deg,var(--surface),#ededeb,var(--surface));background-size:200% 100%;animation:shimmer 1.5s infinite}
.tiny-note{font-size:11px;color:var(--muted);margin-top:12px}
.text-btn{border:0;background:none;color:var(--muted);padding:5px 0}
.text-btn:hover{color:var(--text)}
.quick-links{display:grid;gap:10px;margin-top:55px}
.link-card{display:grid;grid-template-columns:42px 1fr auto;align-items:center;gap:14px;border-top:1px solid var(--line);padding:19px 3px;transition:transform .2s}
.link-card:last-child{border-bottom:1px solid var(--line)}
.link-card:hover{transform:translateX(5px)}
.link-card strong,.link-card small{display:block}
.link-card small{color:var(--muted);font-size:12px;margin-top:2px}
.link-mark{font-size:19px;color:var(--muted)}
.site-footer{max-width:1120px;margin:auto;padding:20px 24px 30px;border-top:1px solid var(--line);display:flex;justify-content:space-between;color:var(--muted);font-size:11px}
.page.narrow{max-width:780px}
.page.center{text-align:center;min-height:72vh;display:grid;place-items:center}
.large-copy{font-size:clamp(21px,3vw,30px);line-height:1.4;letter-spacing:-.025em;color:#444;max-width:760px}
.large-copy.compact{font-size:17px;max-width:620px;margin-bottom:0}
.note-card{margin:45px 0;padding:28px;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface)}
.note-card p{margin:5px 0;font-size:18px}
.back-link{color:var(--muted);font-size:13px}
.random-box{padding:55px 30px;max-width:680px;margin:auto}
.random-symbol{font-size:35px}
.random-box p{font-size:clamp(28px,5vw,50px);line-height:1.12;letter-spacing:-.04em;min-height:120px}
.primary-btn{display:inline-flex;align-items:center;justify-content:center;border:0;background:var(--accent);color:var(--bg);padding:12px 19px;border-radius:999px;font-weight:700;transition:transform .2s,opacity .2s}
.primary-btn:hover{transform:translateY(-2px);opacity:.88}
.game-box{padding:30px;max-width:460px;margin:auto}
.game-box input{width:130px;text-align:center;border:1px solid var(--line);background:var(--bg);border-radius:14px;padding:13px;margin-right:6px;outline:none}
.game-message{min-height:30px;margin:24px 0 10px;color:var(--muted)}
.hidden{display:none}
.holiday-heading{align-items:start;margin-bottom:35px}
.holiday-hero{padding:38px;margin-bottom:50px}
.holiday-hero h2{font-size:clamp(30px,5vw,54px);letter-spacing:-.05em;margin:0 0 12px}
.countdown{font-variant-numeric:tabular-nums;font-size:clamp(30px,6vw,66px);font-weight:800;letter-spacing:-.055em;margin:18px 0}
.holiday-list{display:grid;gap:10px}
.holiday-item{display:grid;grid-template-columns:1fr auto;gap:20px;align-items:center;padding:20px 3px;border-top:1px solid var(--line)}
.holiday-item:last-child{border-bottom:1px solid var(--line)}
.holiday-name{font-weight:700}
.holiday-date{color:var(--muted);font-size:13px}
.holiday-days{font-size:13px;color:var(--muted);text-align:right}
.error-page{min-height:100vh;display:grid;place-items:center;padding:30px}
.error-page h1{font-size:clamp(42px,8vw,80px);line-height:.95;letter-spacing:-.06em;max-width:700px;margin:0 0 20px}
.inline-btn{margin-top:15px}
.reveal{animation:rise .65s both}
.delay-1{animation-delay:.08s}.delay-2{animation-delay:.16s}
@keyframes rise{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
@keyframes shimmer{to{background-position:-200% 0}}
body.dark{--bg:#11110f;--surface:#191917;--text:#f2f2ed;--muted:#999993;--line:#30302c;--accent:#f2f2ed}
body.dark .lead,body.dark .large-copy{color:#c2c2bc}
@media(max-width:700px){
  .site-header{padding:18px 18px 10px;align-items:flex-start}.nav{gap:12px;flex-wrap:wrap;justify-content:flex-end}.nav a{font-size:12px}
  .home,.page{padding:35px 18px 75px}.hero{min-height:52vh;padding:35px 0}.hero h1{font-size:70px}
  .weather-current{align-items:flex-start;flex-direction:column}.current-details{gap:14px}
  .forecast-grid{grid-template-columns:1fr}
  .hourly-card{padding:17px 12px}.chart-axis-label{font-size:11px}.elevation-card{align-items:flex-start;padding:18px}.elevation-value{font-size:18px}
  .forecast-card{min-height:auto;display:grid;grid-template-columns:1fr auto auto;align-items:center;gap:10px}.forecast-day{margin:0}.forecast-icon{margin:0}.forecast-rain{margin:0}
  .site-footer{padding-left:18px;padding-right:18px;gap:10px;flex-direction:column}
  .holiday-item{grid-template-columns:1fr}.holiday-days{text-align:left}
}


/* JACOB OS 2.0 — Future OS visual layer */
:root{--bg:#080d18;--surface:#101a2b;--text:#edf4ff;--muted:#8a9bb5;--line:rgba(147,177,218,.16);--accent:#71d9ff;--shadow:0 20px 70px rgba(0,0,0,.25);--radius:22px}
body{background:radial-gradient(ellipse at 78% 8%,rgba(42,87,145,.19),transparent 34%),radial-gradient(ellipse at 12% 40%,rgba(90,62,151,.10),transparent 35%),var(--bg);color:var(--text);min-height:100vh}
body:before{content:"";position:fixed;inset:0;pointer-events:none;opacity:.18;background-image:linear-gradient(rgba(124,161,211,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(124,161,211,.05) 1px,transparent 1px);background-size:48px 48px;mask-image:linear-gradient(to bottom,black,transparent 85%);z-index:-1}
.site-header.os-header{max-width:1240px;padding:25px 28px 18px}.os-brand{display:flex;align-items:center;gap:11px;letter-spacing:.1em;color:var(--text)}.os-brand small{display:block;color:var(--muted);font-size:8px;letter-spacing:.2em;margin-top:3px}.brand-orbit{display:grid;place-items:center;width:38px;height:38px;border:1px solid rgba(113,217,255,.4);border-radius:13px;color:var(--accent);font-size:22px;box-shadow:inset 0 0 18px rgba(113,217,255,.08),0 0 22px rgba(113,217,255,.08)}.brand-muted{color:var(--accent)}.os-nav{gap:25px}.os-nav a{color:#9eacc2;font-size:12px;letter-spacing:.04em}.os-nav a:hover{color:var(--accent)}.icon-btn{border-color:var(--line);color:var(--text);background:rgba(255,255,255,.03)}
.os-shell{max-width:1240px;padding:28px 28px 85px}.os-hero{min-height:540px;display:grid;grid-template-columns:1.05fr .95fr;align-items:center;position:relative;padding:48px 0 72px;overflow:hidden}.hero-copy{position:relative;z-index:2}.system-status{font-size:10px;letter-spacing:.18em;color:#9bb0ca;margin-bottom:38px}.system-status i{display:inline-block;width:7px;height:7px;border-radius:50%;background:#63e6ae;box-shadow:0 0 12px #63e6ae;margin-right:8px}.system-status span{padding:0 8px;color:#4b607d}.os-hero .eyebrow{color:var(--accent);margin-bottom:12px}.os-hero h1{font-size:clamp(58px,8vw,104px);line-height:.98;letter-spacing:-.075em;margin:0 0 20px;font-weight:760}.hero-name{color:#91a5c1}.accent-dot{color:var(--accent)}.os-hero .lead{font-size:16px;color:#9aaac1;margin-bottom:34px}.hero-meta{border-top:1px solid var(--line);padding-top:20px;max-width:410px}.os-hero .clock{font-size:clamp(34px,4.5vw,54px);letter-spacing:-.055em;color:#f4f8ff}.os-hero .meta-row{font-size:11px;color:#8496b1}.orbital-art{height:390px;position:relative;display:grid;place-items:center}.core-glow{width:150px;height:150px;border-radius:50%;display:grid;place-items:center;background:radial-gradient(circle at 35% 30%,#284d73,#101a2c 68%);border:1px solid rgba(119,213,255,.6);box-shadow:0 0 50px rgba(76,177,240,.2),inset 0 0 35px rgba(113,217,255,.15);color:#c8f2ff;font-size:62px;font-weight:300;z-index:2}.orbit{position:absolute;border:1px solid rgba(113,190,255,.22);border-radius:50%;transform:rotate(-25deg)}.orbit-one{width:310px;height:150px}.orbit-two{width:390px;height:220px;transform:rotate(48deg);border-color:rgba(166,137,255,.2)}.orbit-three{width:440px;height:290px;transform:rotate(-68deg);border-style:dashed;opacity:.55}.orbit-tag{position:absolute;font-size:9px;letter-spacing:.2em;color:#7186a5}.tag-top{top:32px;right:5%}.tag-bottom{bottom:38px;left:10%}
.os-section-heading{align-items:end;margin-bottom:24px}.os-section-heading h2{font-size:clamp(30px,4vw,46px);color:var(--text)}.section-subtitle{color:var(--muted);font-size:13px;margin:8px 0 0}.section-index{font-size:9px;letter-spacing:.16em;color:#7185a2}.workspace-section{padding:36px 0 78px;border-top:1px solid var(--line)}.module-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:13px}.module-card{position:relative;min-height:205px;padding:21px;border:1px solid var(--line);border-radius:18px;background:linear-gradient(145deg,rgba(24,39,62,.88),rgba(13,22,37,.88));box-shadow:0 12px 35px rgba(0,0,0,.12);display:flex;flex-direction:column;transition:transform .25s,border-color .25s,box-shadow .25s;overflow:hidden}.module-card:before{content:"";position:absolute;width:150px;height:150px;right:-90px;top:-90px;border-radius:50%;background:rgba(101,197,255,.12);filter:blur(8px);transition:transform .3s}.module-card:hover{transform:translateY(-5px);border-color:rgba(113,217,255,.48);box-shadow:0 18px 45px rgba(0,0,0,.24),0 0 25px rgba(73,165,232,.07)}.module-card:hover:before{transform:scale(1.8)}.module-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:27px}.module-icon{font-size:25px;color:#72d9ff}.module-icon.violet{color:#b39aff}.module-icon.green{color:#71dfb0}.module-icon.amber{color:#efc77e}.module-code{font-size:9px;letter-spacing:.13em;color:#7185a2}.module-title{font-size:17px;font-weight:700;letter-spacing:-.02em}.module-desc{font-size:11px;line-height:1.55;color:#91a2bb;margin-top:7px;max-width:210px}.module-arrow{position:absolute;right:20px;bottom:17px;color:var(--accent);font-size:17px}
.os-weather{border-top:1px solid var(--line);padding:45px 0 20px}.os-refresh{font-size:10px;letter-spacing:.12em;color:var(--accent)}.os-weather-current{background:linear-gradient(110deg,rgba(22,42,67,.95),rgba(15,26,43,.92));border-color:rgba(113,190,255,.18);padding:28px 32px}.weather-main{display:flex;align-items:center;gap:20px}.weather-icon{font-size:42px;color:var(--accent)}.current-temp{font-size:58px;color:#f2f7ff}.os-weather .muted{font-size:12px;color:#9aabc3}.current-details{gap:34px}.current-details span{display:grid;gap:3px}.current-details b{font-size:18px;color:#eaf4ff}.current-details small{font-size:8px;letter-spacing:.13em;color:#8497b3}.forecast-grid{grid-template-columns:repeat(3,1fr);gap:13px}.forecast-card{background:rgba(17,29,47,.8);border-color:var(--line);padding:19px}.forecast-day{font-size:12px;color:#9eafc7}.forecast-icon{color:var(--accent)}.forecast-temp{font-size:17px;color:#e8f2ff}.forecast-rain{color:#8598b3}.weather-lower{display:grid;grid-template-columns:1.6fr 1fr;gap:13px;margin-top:13px}.hourly-card,.elevation-card{background:rgba(17,29,47,.82);border-color:var(--line);padding:22px}.chart-heading h3,.elevation-card h3{font-size:16px;color:#eaf2ff}.chart-line{stroke:var(--accent)}.chart-dot{fill:var(--accent);stroke:#132238}.chart-fill-top{stop-color:#71d9ff;stop-opacity:.22}.chart-legend{color:#8fa2bd}.chart-legend i{background:var(--accent)}.elevation-card{margin:0;align-items:flex-start}.elevation-symbol{border-color:rgba(113,217,255,.3);color:var(--accent)}.elevation-value{color:#eaf4ff;font-size:17px}.tiny-note{color:#7f92ae}.privacy-note{margin-top:13px}.daily-note{display:flex;align-items:center;gap:17px;margin:58px 0 10px;padding:22px 25px;border:1px solid var(--line);border-radius:17px;background:linear-gradient(100deg,rgba(22,37,60,.8),rgba(13,22,37,.65))}.daily-note-icon{font-size:25px;color:var(--accent)}.daily-note .eyebrow{margin:0 0 5px;color:#7f94b3}.daily-note p:last-child{margin:0;color:#d4e0f1;font-size:14px}.daily-note-mark{margin-left:auto;font-size:25px;color:#536986}.os-footer{max-width:1240px;border-color:var(--line);color:#71839f;font-size:9px;letter-spacing:.12em}.os-footer a{color:var(--accent)}
/* Shared inner pages */
body:not(.os-home) .site-header{max-width:1240px}body:not(.os-home) .page{max-width:1040px}body:not(.os-home) .page h1{color:var(--text)}body:not(.os-home) .large-copy{color:#aab9ce}body:not(.os-home) .card,body:not(.os-home) .note-card{background:rgba(17,29,47,.88);border-color:var(--line)}body:not(.os-home) .primary-btn{background:var(--accent);color:#07111d}body:not(.os-home) .game-box input{background:#0b1423;color:var(--text);border-color:var(--line)}body:not(.os-home) .holiday-item{border-color:var(--line)}body:not(.os-home) .holiday-name{color:var(--text)}body:not(.os-home) .random-box p{color:var(--text)}body:not(.os-home) .back-link{color:var(--accent)}
body:not(.dark){--bg:#f3f6fb;--surface:#fff;--text:#172235;--muted:#64748b;--line:rgba(40,65,100,.16);background:#f3f6fb;color:#172235}body:not(.dark):before{opacity:.28}body:not(.dark) .module-card{background:linear-gradient(145deg,#fff,#edf3fa)}body:not(.dark) .module-title,body:not(.dark) .os-section-heading h2{color:#172235}body:not(.dark) .module-desc,body:not(.dark) .section-subtitle{color:#64748b}body:not(.dark) .os-weather-current,body:not(.dark) .forecast-card,body:not(.dark) .hourly-card,body:not(.dark) .elevation-card{background:#fff}body:not(.dark) .current-temp,body:not(.dark) .current-details b,body:not(.dark) .chart-heading h3,body:not(.dark) .elevation-card h3,body:not(.dark) .elevation-value{color:#172235}body:not(.dark) .daily-note{background:#fff}body:not(.dark) .daily-note p:last-child{color:#334155}body:not(.dark) .os-hero .lead{color:#64748b}body:not(.dark) .os-hero .clock{color:#172235}body:not(.dark) .hero-name{color:#71839d}body:not(.dark) .system-status{color:#64748b}body:not(.dark) .core-glow{color:#1b5677}body:not(.dark) .orbit-tag{color:#657c9b}
@media(max-width:850px){.os-hero{grid-template-columns:1fr .7fr;min-height:470px}.orbital-art{transform:scale(.78);margin-left:-45px}.module-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:650px){.site-header.os-header{padding:18px 18px 10px;align-items:center}.os-nav{gap:12px}.os-nav a{font-size:10px}.os-shell{padding:22px 18px 65px}.os-hero{display:block;min-height:0;padding:48px 0 40px}.system-status{margin-bottom:28px}.os-hero h1{font-size:clamp(58px,15vw,82px)}.orbital-art{height:210px;transform:scale(.65);margin:-5px auto -15px}.workspace-section{padding:28px 0 55px}.module-grid{gap:9px}.module-card{min-height:180px;padding:15px}.module-top{margin-bottom:20px}.module-title{font-size:14px}.module-desc{font-size:10px}.section-index{display:none}.os-weather{padding-top:32px}.os-weather-current{padding:22px;gap:22px}.weather-main{gap:13px}.current-temp{font-size:48px}.current-details{gap:17px}.current-details b{font-size:16px}.current-details small{font-size:7px}.forecast-grid{grid-template-columns:1fr}.forecast-card{min-height:auto;display:grid;grid-template-columns:1fr auto auto;align-items:center;gap:10px}.forecast-day,.forecast-icon{margin:0}.weather-lower{grid-template-columns:1fr}.daily-note{margin-top:40px;padding:18px}.os-footer{padding:18px;gap:8px}.os-footer span:nth-child(2){line-height:1.6}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}