@font-face{font-family:Inter;src:url('./modules/biology/assets/inter.woff2') format('woff2');font-style:normal;font-weight:100 900;font-display:swap}
@font-face{font-family:Inter;src:url('./modules/biology/assets/inter-latin.woff2') format('woff2');font-style:normal;font-weight:100 900;font-display:swap;unicode-range:U+0000-00FF}
:root{font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#272b28;background:#fafaf8;font-synthesis:none;--ink:#272b28;--muted:#858982;--line:#e9eae4;--green:#5e7954;--radius:14px}
*{box-sizing:border-box}body{margin:0;font-size:14px;line-height:1.55}a{color:inherit;text-decoration:none}button,input,select{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{color:inherit;cursor:pointer}button:focus-visible,a:focus-visible,main:focus-visible{outline:2px solid #749368;outline-offset:4px}button{background:none;border:0}h1,h2,h3,p{margin:0}h1,h2,h3{letter-spacing:-.035em}h1{font-size:clamp(29px,3.2vw,40px);font-weight:550;line-height:1.2}h2{font-size:20px;font-weight:570}h3{font-size:15px;font-weight:550}p{color:#81857d}.icon{width:20px;height:20px;flex-shrink:0;vertical-align:middle}.skip-link{position:fixed;left:20px;top:-60px;background:#fff;border:1px solid var(--line);padding:12px 18px;z-index:30;border-radius:8px}.skip-link:focus{top:10px}
.site-header{height:90px;border-bottom:1px solid var(--line);background:#fff}.header-inner{height:100%;max-width:1320px;padding:0 44px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:32px}.wordmark{white-space:nowrap;font-size:35px;font-weight:750;letter-spacing:-2.4px;line-height:1}.wordmark span{color:#729168}.main-nav{display:flex;align-items:center;gap:8px;margin-left:72px}.main-nav a{display:flex;align-items:center;gap:9px;color:#7d817a;font-size:13px;font-weight:500;padding:10px 17px;border-radius:7px}.main-nav a.active{background:#f1f3ed;color:#333c30}.main-nav .icon{width:17px;height:17px}.main-nav a:hover{color:#252b24;background:#f6f7f3}.header-note{font-size:11px;color:#8a8e85;display:flex;gap:8px;align-items:center}.status-dot{width:5px;height:5px;background:#98ad87;border-radius:50%}main{max-width:1320px;padding:46px 44px 64px;margin:auto;min-height:calc(100vh - 190px)}.page-intro{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:34px}.eyebrow{font-size:10px;letter-spacing:1.9px;font-weight:600;color:#8a9083;margin-bottom:12px}.page-intro h1{margin-bottom:11px}.page-intro p:not(.eyebrow){font-size:13px}.muted-period{color:#9eaf8d}.today-label{font-size:11px;display:flex;gap:8px;align-items:center;color:#8b9085;padding-bottom:4px;white-space:nowrap}.today-label .icon{width:15px;height:15px}
.calendar-layout{display:grid;grid-template-columns:minmax(0,1fr) 285px;gap:22px}.calendar-panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;min-width:0}.calendar-toolbar{padding:22px 24px 24px;display:flex;align-items:center;justify-content:space-between;gap:15px}.calendar-toolbar>div:first-child{display:flex;align-items:center;gap:15px}.calendar-toolbar h2{text-transform:capitalize;font-size:21px;white-space:nowrap}.month-count{font-size:10px;color:#90958a;background:#f6f7f2;padding:3px 8px;border-radius:5px}.calendar-controls{display:flex;align-items:center;gap:14px}.today-button{border:1px solid #e8eae2;border-radius:6px;font-size:11px;padding:5px 12px}.today-button:hover,.icon-button:hover{background:#f4f6ef}.month-arrows{display:flex;gap:2px}.icon-button{padding:3px;border-radius:5px;line-height:1}.icon-button .icon{width:20px;height:20px}.weekdays{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));padding:0 13px 12px;color:#94988e;font-size:10px;font-weight:500;text-align:center;letter-spacing:.4px}.weekdays span:nth-last-child(-n+2){color:#b3b7ac}.calendar-grid{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));padding:0 12px;gap:0}.calendar-day{min-width:0;min-height:97px;padding:9px 5px 7px;display:flex;flex-direction:column;text-align:left;border-top:1px solid #eff0ea;border-right:1px solid #f2f3ee;position:relative;border-radius:0}.calendar-day:nth-child(7n){border-right:none}.calendar-day:hover{background:#f8faf5}.calendar-day.selected{background:#f2f5ed;box-shadow:inset 0 0 0 1px #d8e2ce;border-radius:7px;border-color:transparent}.calendar-day.outside{color:#c5c9bf}.calendar-day.outside .calendar-chip{opacity:.5}.calendar-day.weekend:not(.selected){background:#fcfcfa}.day-number{display:inline-flex;width:25px;height:25px;align-items:center;justify-content:center;font-size:11px;margin:0 0 6px 2px;line-height:1;border-radius:50%;flex-shrink:0}.is-today .day-number{background:#333d2f;color:#fff}.day-events{display:grid;gap:4px;width:100%}.calendar-chip{color:var(--subject);background:var(--tint);padding:4px 4px;border-radius:4px;font-size:8px;line-height:1.2;display:flex;gap:4px;align-items:center;flex-wrap:wrap;text-align:left;width:100%;min-width:0;overflow:hidden}.chip-dot{height:4px;width:4px;border-radius:50%;background:currentColor;flex-shrink:0}.calendar-chip.homework{border-left:2px solid #bf91a0}.chip-title{display:none}.mobile-event-dots{display:none}.calendar-legend{display:flex;gap:20px;padding:18px 23px;font-size:9px;color:#989b92;border-top:1px solid #f0f1eb}.calendar-legend span{display:flex;gap:6px;align-items:center}.calendar-legend i{display:block;width:5px;height:5px;background:#82956b;border-radius:50%}.calendar-legend .homework{background:#b58b9a;border-radius:1px}
.day-panel{padding:26px 23px;border:1px solid var(--line);border-radius:var(--radius);background:#f5f6f0;display:flex;flex-direction:column}.day-panel .eyebrow{font-size:9px;letter-spacing:1.5px;margin-bottom:16px}.day-panel h2{font-size:26px;font-weight:500;line-height:1.2}.day-subtitle{margin-top:7px;font-size:11px;text-transform:capitalize;color:#92978b}.day-subtitle>span{padding:0 4px}.selected-events{display:grid;gap:12px;margin-top:25px}.event-card{display:flex;gap:13px;align-items:center;border:1px solid var(--line);border-radius:10px;background:#fff;padding:18px;transition:border-color .12s;min-width:0}.event-card:hover{border-color:#bac8ad}.event-card-body{min-width:0;flex:1}.event-meta{font-size:9px;display:flex;align-items:center;gap:5px;color:var(--subject);margin-bottom:6px;flex-wrap:wrap}.subject-dot{width:5px;height:5px;border-radius:50%;background:var(--subject);flex-shrink:0}.event-type{margin-left:auto;font-size:8px;color:#859276;padding:2px 5px;background:#f1f5ec;border-radius:3px;white-space:nowrap}.event-type.homework{color:#a37a8a;background:#f8eff2}.event-card h3{font-size:12px;line-height:1.55;letter-spacing:-.2px}.event-card p{font-size:9px;line-height:1.6;margin-top:5px;color:#93988c}.event-arrow{width:15px;height:15px;color:#9da592}.compact{padding:15px 13px;gap:7px}.compact .event-arrow{align-self:flex-end;width:14px;height:14px}.compact .event-meta{font-size:9px}.compact h3{font-size:12px}.day-footnote{display:flex;gap:7px;margin-top:auto;padding-top:30px;font-size:9px;line-height:1.6;color:#a0a695}.day-footnote .icon{width:13px;height:13px;margin-top:1px}.quiet-empty{padding:10px 0 20px}.quiet-empty>.icon{color:#a4b596;width:27px;height:27px;margin-bottom:15px}.quiet-empty h3{font-size:15px;margin-bottom:7px}.quiet-empty p{font-size:11px;margin-bottom:18px}
.upcoming-section{margin-top:33px}.section-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:17px;gap:15px}.section-heading h2{font-size:16px;letter-spacing:-.4px}.section-heading>span{font-size:10px;color:#a0a497}.upcoming-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.event-date{width:40px;align-self:stretch;display:flex;flex-direction:column;justify-content:center;align-items:center;border-right:1px solid var(--line);padding-right:13px;color:#646c5e;flex-shrink:0}.event-date strong{font-size:22px;font-weight:450;line-height:1.1;letter-spacing:-1px}.event-date span{font-size:9px;color:#a0a698;margin-top:3px}.upcoming-grid .event-card h3{font-size:12px}.upcoming-grid .event-meta{justify-content:flex-start}.upcoming-grid .event-type{margin-left:7px}.subject-section{margin-top:33px}.text-link{display:inline-flex;align-items:center;gap:8px;font-size:10px;color:#727d66;font-weight:500}.text-link .icon{height:14px;width:14px}.subject-strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.subject-shortcut{display:flex;align-items:center;gap:11px;border:1px solid var(--line);padding:15px;border-radius:9px;background:#fff;font-size:12px;font-weight:500}.subject-shortcut>.icon{margin-left:auto;color:#a7ae9f;width:14px;height:14px}.subject-icon{background:var(--tint,#f1f3ed);color:var(--subject,#63765b);width:36px;height:36px;display:inline-flex;align-items:center;justify-content:center;border-radius:9px;flex-shrink:0}.subject-icon .icon{width:18px;height:18px}.site-footer{max-width:1232px;margin:0 auto;padding:22px 0 30px;border-top:1px solid var(--line);display:flex;align-items:center;gap:18px;color:#b0b3a9;font-size:9px}.site-footer>span:last-child{margin-left:auto}.footer-brand{font-size:17px;font-weight:650;letter-spacing:-1px;color:#979f8c}
.subjects-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.subject-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:28px;position:relative}.subject-card:hover,.practice-card:hover{border-color:#c8d3be}.subject-card>.subject-icon{width:46px;height:46px;border-radius:11px;margin-bottom:25px}.subject-card-top{position:absolute;right:28px;top:38px;display:flex;gap:20px;align-items:center;color:#a0a696;font-size:10px}.subject-card-top .icon{width:17px}.subject-card h2{font-size:25px;margin-bottom:5px}.subject-card p{font-size:12px}.subject-card-foot{border-top:1px solid var(--line);padding-top:19px;margin-top:28px;display:flex;align-items:center;gap:6px;font-size:10px;color:#8d9583}.subject-card-foot>span:last-child{margin-left:auto}.subtle-note{display:flex;gap:15px;padding:26px;margin-top:25px;color:#939d88}.subtle-note h3{font-size:13px;color:#737f68;margin-bottom:5px}.subtle-note p{font-size:11px}.practice-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.practice-card{background:#fff;border:1px solid var(--line);border-radius:13px;padding:26px}.practice-card-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:25px}.subject-pill{font-size:9px;color:var(--subject);background:var(--tint);padding:4px 8px;border-radius:4px}.practice-card h2{font-size:18px;margin-bottom:8px}.practice-card p{font-size:11px;min-height:38px}.practice-card .text-link{margin-top:25px}
.breadcrumbs{display:flex;align-items:center;gap:10px;color:#92998a;font-size:10px;margin-top:-17px;margin-bottom:30px}.breadcrumbs a:hover{color:#4b5c3f}.breadcrumbs>span:not(:last-child){color:#c7ccbf}.unit-hero{padding-bottom:28px}.unit-subject{display:flex;gap:9px;align-items:center;font-size:12px;color:var(--subject);margin-bottom:20px}.unit-subject .subject-icon{width:30px;height:30px;border-radius:7px}.unit-subject .icon{width:16px;height:16px}.unit-hero h1{max-width:900px;font-size:34px;line-height:1.2}.unit-hero .law-unit-heading{font-size:45px;letter-spacing:-2px}.unit-topic{font-size:26px;font-weight:450;margin-top:6px}.unit-description{font-size:12px;margin-top:15px;max-width:670px}.event-banner{margin-top:23px;display:flex;gap:12px;align-items:center;padding:13px 17px;background:var(--tint);border-radius:8px;font-size:11px;color:var(--subject);width:fit-content;max-width:100%;flex-wrap:wrap}.event-banner .icon{width:16px;height:16px}.event-banner strong{font-weight:550}.event-banner>span{padding-left:12px;border-left:1px solid #dce2d5}.unit-event-links{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}.unit-event-links a{display:flex;gap:8px;align-items:center;font-size:10px;color:#818d75;border:1px solid var(--line);padding:9px 12px;border-radius:6px}.unit-event-links .icon{width:14px;height:14px}.unit-tabs{display:flex;gap:24px;border-bottom:1px solid var(--line);margin-bottom:28px}.unit-tabs button{display:flex;gap:7px;align-items:center;padding:14px 0;color:#9a9f91;font-size:11px;border-bottom:2px solid transparent;margin-bottom:-1px;white-space:nowrap}.unit-tabs button[aria-selected="true"]{border-color:#6a8059;color:#48583a}.unit-tabs .icon{width:15px;height:15px}.unit-content{min-width:0}.module-frame{border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#fff;isolation:isolate;min-width:0}.panel-intro{margin:5px 0 24px}.panel-intro h2{font-size:23px;margin-bottom:6px}.panel-intro p{font-size:12px}.materials-grid{display:grid;gap:12px}.material-card{display:flex;align-items:center;gap:18px;background:#fff;border:1px solid var(--line);border-radius:10px;padding:23px}.material-card>.icon{color:#8d9c80;width:24px;height:24px}.material-card h3{font-size:14px;margin-bottom:4px}.material-card p{font-size:11px}.material-card>span{margin-left:auto;color:#8d9981;font-size:11px;display:flex;gap:10px;align-items:center}.material-card>span>.icon{width:15px}.empty-state{text-align:center;border:1px dashed #dfe4d6;background:#f7f8f3;border-radius:12px;padding:65px 25px}.empty-state>.icon{width:28px;height:28px;color:#a1ad93;margin-bottom:20px}.empty-state h2{font-size:21px;margin-bottom:9px}.empty-state p{font-size:12px;max-width:410px;margin:0 auto 23px}.progress-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:15px;margin-bottom:27px}.progress-card{border:1px solid var(--line);border-radius:12px;padding:26px;background:#fff;display:flex;flex-direction:column;gap:10px}.progress-card strong{font-size:37px;font-weight:450;letter-spacing:-2px;color:#5c714c}.progress-card span{color:#969f8c;font-size:12px}.button{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:12px 17px;border-radius:7px;border:1px solid var(--line);font-size:11px}.button.primary{background:#3b4933;border-color:#3b4933;color:#fff}.button .icon{width:15px;height:15px}.storage-note{font-size:10px;max-width:650px;margin-top:20px;line-height:1.8}.loading-copy{padding:40px;font-size:12px;text-align:center}.empty-copy{font-size:12px}
@media(min-width:1250px){.calendar-day{min-height:104px}.calendar-chip{font-size:8px}.chip-title{display:block;width:100%;padding-left:8px;font-size:7px;opacity:.75;white-space:nowrap;text-overflow:ellipsis;overflow:hidden}.calendar-layout{grid-template-columns:minmax(0,1fr) 290px}.calendar-toolbar{padding-top:25px}}
@media(max-width:1100px){.header-note{display:none}.header-inner{justify-content:flex-start}.main-nav{margin-left:auto}.calendar-layout{grid-template-columns:minmax(0,1fr) 255px;gap:16px}.day-panel{padding:24px 18px}.site-footer{margin-left:44px;margin-right:44px}.today-label{display:none}.subject-shortcut{padding:12px;gap:8px}.subject-shortcut>.icon{display:none}.practice-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:800px){.header-inner{padding:0 24px}.site-header{height:78px}main{padding:33px 24px 45px}.main-nav{gap:2px}.main-nav a{padding:9px 12px;font-size:12px;gap:6px}.calendar-layout{grid-template-columns:minmax(0,1fr)}.day-panel{display:block;padding:24px}.day-panel .eyebrow{margin-bottom:9px}.day-panel h2{font-size:23px}.selected-events{grid-template-columns:repeat(2,minmax(0,1fr));margin-top:19px}.day-footnote{padding-top:20px}.day-panel .quiet-empty{grid-column:1/-1;padding:0}.day-panel .quiet-empty>.icon{display:none}.day-panel .quiet-empty p{max-width:440px;margin-bottom:10px}.subject-strip{grid-template-columns:repeat(2,minmax(0,1fr))}.site-footer{margin-left:24px;margin-right:24px}.page-intro{margin-bottom:27px}.page-intro h1{font-size:31px}.calendar-day{min-height:99px}.calendar-chip{font-size:9px}.subject-card{padding:23px}.subject-card-top{right:23px;top:33px}.unit-hero h1{font-size:29px}.unit-topic{font-size:23px}}
@media(max-width:540px){body{font-size:13px}.site-header{height:115px}.header-inner{padding:18px 20px 0;flex-wrap:wrap;gap:8px;align-content:space-between}.wordmark{font-size:31px}.main-nav{order:2;width:100%;justify-content:space-between;margin:0;gap:0}.main-nav a{padding:12px 9px 14px;border-radius:0;font-size:11px;flex:1;justify-content:center;border-bottom:2px solid transparent}.main-nav a.active{background:transparent;border-color:#82956b}.main-nav .icon{width:15px;height:15px}.header-note{display:flex;font-size:9px;margin-left:auto;padding-bottom:5px}.header-note .status-dot{width:4px;height:4px}main{padding:30px 18px 40px}.page-intro .eyebrow{font-size:9px;letter-spacing:1.5px;margin-bottom:12px}.page-intro h1{font-size:28px;max-width:310px;line-height:1.25;letter-spacing:-1.2px}.page-intro p:not(.eyebrow){font-size:11px}.calendar-toolbar{padding:18px 14px 22px;gap:8px}.calendar-toolbar h2{font-size:17px}.calendar-toolbar>div:first-child{gap:8px}.month-count{display:none}.calendar-controls{gap:9px}.today-button{font-size:10px;padding:4px 9px}.icon-button .icon{width:18px;height:18px}.weekdays{padding:0 5px 11px;font-size:9px}.calendar-grid{padding:0 5px}.calendar-day{min-height:63px;padding:6px 3px;align-items:center}.day-number{font-size:11px;width:24px;height:24px;margin:0 0 4px}.day-events{display:none}.mobile-event-dots{display:flex;justify-content:center;gap:3px;margin-top:3px}.mobile-event-dots i{width:5px;height:5px;border-radius:50%;background:var(--subject)}.mobile-event-dots i.homework{border-radius:1px}.calendar-legend{padding:14px 13px;font-size:8px;gap:15px}.calendar-layout{gap:14px}.day-panel{padding:20px}.day-panel .eyebrow{font-size:8px}.day-panel h2{font-size:22px}.day-subtitle{font-size:10px}.selected-events{grid-template-columns:1fr;gap:9px;margin-top:17px}.compact{padding:13px}.compact h3{font-size:12px}.day-footnote{font-size:8px;padding-top:18px}.upcoming-section,.subject-section{margin-top:28px}.upcoming-grid{grid-template-columns:1fr;gap:9px}.section-heading{margin-bottom:13px}.section-heading h2{font-size:15px}.section-heading>span{font-size:8px}.event-card{padding:15px;gap:13px}.event-date{width:35px}.event-date strong{font-size:21px}.event-card h3{font-size:12px}.subject-strip{gap:9px}.subject-shortcut{padding:12px;font-size:11px;gap:9px}.subject-shortcut .subject-icon{width:29px;height:29px;border-radius:7px}.subject-icon .icon{width:16px;height:16px}.text-link{font-size:9px;gap:5px}.site-footer{margin-left:18px;margin-right:18px;gap:11px;flex-wrap:wrap;font-size:8px;padding-top:19px}.site-footer>span:last-child{margin-left:0;width:100%;padding-left:0}.subjects-grid,.practice-grid{grid-template-columns:1fr;gap:13px}.subject-card{padding:23px}.subject-card>.subject-icon{margin-bottom:16px}.subject-card h2{font-size:23px}.subject-card-foot{margin-top:20px;font-size:9px}.subject-card-top{font-size:9px}.subtle-note{padding:20px 5px}.subtle-note p{font-size:10px}.practice-card{padding:23px}.practice-card-top{margin-bottom:20px}.practice-card p{min-height:0}.practice-card .text-link{margin-top:20px}.breadcrumbs{font-size:9px;margin-top:-8px;margin-bottom:25px}.unit-hero h1{font-size:26px}.unit-hero .law-unit-heading{font-size:38px}.unit-topic{font-size:21px}.unit-description{font-size:11px;line-height:1.8}.unit-subject{margin-bottom:19px}.unit-tabs{gap:15px;margin-bottom:20px;overflow-x:auto}.unit-tabs button{font-size:9px;gap:4px}.unit-tabs .icon{width:13px;height:13px}.event-banner{padding:12px;gap:9px;font-size:10px}.event-banner .banner-title{width:100%;padding-left:0;border:0}.unit-event-links a{font-size:9px;flex-wrap:wrap;gap:6px}.unit-event-links a>span{max-width:230px}.module-frame{border-radius:9px}.empty-state{padding:45px 20px}.empty-state h2{font-size:18px}.empty-state p{font-size:11px}.progress-grid{gap:9px}.progress-card{padding:16px 12px}.progress-card strong{font-size:28px}.progress-card span{font-size:9px}.panel-intro h2{font-size:20px}.panel-intro p{font-size:11px}.material-card{padding:18px;gap:12px;flex-wrap:wrap}.material-card h3{font-size:12px}.material-card p{font-size:10px}.material-card>span{font-size:10px}.storage-note{font-size:9px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}

/* Shared navigation and iPhone-first layout. No zoom restrictions. */
:root {
  --study-sticky-offset: calc(80px + env(safe-area-inset-top, 0px));
  --study-bottom-offset: 0px;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}
html { scroll-padding-top: calc(var(--study-sticky-offset) + 16px); scroll-padding-bottom: calc(var(--study-bottom-offset) + 16px); }
body { min-height: 100svh; }
button, a, input, select, summary { touch-action: manipulation; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  height: var(--study-sticky-offset);
  padding-top: env(safe-area-inset-top, 0px);
}
.header-inner {
  gap: 20px;
  padding-left: max(24px, env(safe-area-inset-left, 0px));
  padding-right: max(24px, env(safe-area-inset-right, 0px));
}
.brand-block { display: flex; align-items: center; gap: 17px; min-width: 0; }
.header-context { font-size: 12px; color: #858d7d; border-left: 1px solid var(--line); padding-left: 17px; }
.history-controls { display: flex; gap: 2px; padding: 3px; border: 1px solid var(--line); border-radius: 12px; flex-shrink: 0; background: #fafbf7; }
.history-button { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 8px; color: #48563c; }
.history-button:disabled { color: #c3c9bc; cursor: default; }
.history-button:hover:not(:disabled) { background: #eaf0e3; }
.history-button:active:not(:disabled) { background: #dce7d2; }
.history-button .icon { width: 21px; height: 21px; }
.main-nav { margin-left: auto; }
.main-nav a { min-height: 44px; }
.header-note { display: none; }
.subject-overview { margin-bottom: 32px; }
.subject-overview-heading { display: flex; gap: 13px; align-items: center; margin-bottom: 18px; }
.subject-overview-heading .eyebrow { margin: 0; }
.subject-overview h1 { margin-bottom: 10px; }
.subject-overview > p { font-size: 14px; }
.unit-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.unit-card { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 26px; display: flex; gap: 22px; justify-content: space-between; }
.unit-card:hover { border-color: var(--subject); }
.unit-card h2 { font-size: 23px; margin-bottom: 12px; }
.unit-card p:not(.eyebrow) { font-size: 14px; line-height: 1.7; }
.unit-card .text-link { min-height: 44px; margin-top: 13px; font-size: 13px; color: var(--subject); }
.unit-card-icon { display: grid; place-items: center; color: var(--subject); background: var(--tint); width: 44px; height: 44px; border-radius: 10px; flex-shrink: 0; }
.generic-notes { padding: 24px; max-width: 760px; background: white; border: 1px solid var(--line); border-radius: 12px; }
.generic-notes > p { margin-bottom: 16px; line-height: 1.8; color: #52594c; }
.tab-label-short { display: none; }
.unit-about { margin-top: 12px; }
.unit-about summary { cursor: pointer; width: fit-content; color: #7a856f; font-size: 13px; }
.unit-about .unit-description { margin-top: 8px; }

@media (max-width: 900px) {
  :root {
    --study-sticky-offset: calc(64px + env(safe-area-inset-top, 0px));
    --study-bottom-offset: calc(76px + env(safe-area-inset-bottom, 0px));
  }
  body { font-size: 15px; }
  .site-header { background: #fff; }
  .header-inner {
    padding: 0 max(16px, env(safe-area-inset-right, 0px)) 0 max(16px, env(safe-area-inset-left, 0px));
    gap: 12px;
    flex-wrap: nowrap;
    align-content: normal;
    justify-content: space-between;
  }
  .brand-block { gap: 12px; flex: 1; }
  .wordmark { font-size: 31px; flex-shrink: 0; }
  .header-context { font-size: 12px; padding-left: 12px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .history-controls { padding: 2px; gap: 0; border-radius: 11px; }
  .header-note { display: none; }
  .main-nav {
    position: fixed;
    inset: auto 0 0;
    z-index: 50;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 5px;
    width: auto;
    min-height: var(--study-bottom-offset);
    margin: 0;
    padding: 7px max(12px, env(safe-area-inset-right, 0px)) calc(7px + env(safe-area-inset-bottom, 0px)) max(12px, env(safe-area-inset-left, 0px));
    background: #fff;
    border-top: 1px solid #e4e8dd;
  }
  .main-nav a {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    min-height: 54px;
    padding: 7px 4px;
    font-size: 11px;
    line-height: 1.25;
    border: 0;
    border-radius: 10px;
    color: #78816e;
  }
  .main-nav a.active { background: #eef3e7; color: #435538; border: 0; }
  .main-nav .icon { width: 21px; height: 21px; }
  main {
    padding: 23px max(16px, env(safe-area-inset-right, 0px)) 36px max(16px, env(safe-area-inset-left, 0px));
    min-height: calc(100svh - var(--study-sticky-offset) - var(--study-bottom-offset));
    scroll-margin-top: var(--study-sticky-offset);
  }
  .page-intro { margin-bottom: 24px; }
  .page-intro h1 { font-size: clamp(27px, 7.2vw, 34px); line-height: 1.2; letter-spacing: -1.2px; max-width: 560px; }
  .page-intro .eyebrow { font-size: 10px; letter-spacing: 1.5px; margin-bottom: 10px; }
  .page-intro p:not(.eyebrow) { font-size: 14px; line-height: 1.6; }
  .today-label { display: none; }
  .calendar-layout { grid-template-columns: minmax(0, 1fr); gap: 16px; }
  .calendar-toolbar { padding: 14px 12px 15px; gap: 6px; }
  .calendar-toolbar > div:first-child { gap: 0; min-width: 0; }
  .calendar-toolbar h2 { font-size: 19px; letter-spacing: -.6px; }
  .month-count { display: none; }
  .calendar-controls { gap: 2px; flex-shrink: 0; }
  .month-arrows { gap: 0; }
  .today-button { min-height: 44px; min-width: 50px; padding: 8px; font-size: 12px; }
  .icon-button { width: 44px; min-height: 44px; display: grid; place-items: center; padding: 0; }
  .icon-button .icon { width: 21px; height: 21px; }
  .weekdays { padding: 0 5px 9px; font-size: 11px; color: #7a8370; }
  .calendar-grid { padding: 0 5px; }
  .calendar-day { min-height: 56px; padding: 6px 3px; align-items: center; justify-content: flex-start; }
  .day-number { font-size: 13px; width: 29px; height: 29px; margin: 0 0 3px; }
  .day-events { display: none; }
  .mobile-event-dots { display: flex; gap: 4px; justify-content: center; margin-top: 2px; }
  .mobile-event-dots i { width: 6px; height: 6px; border-radius: 50%; background: var(--subject); }
  .mobile-event-dots i.homework { border-radius: 1px; }
  .calendar-legend { font-size: 10px; gap: 14px; padding: 14px 12px; flex-wrap: wrap; color: #7d8674; }
  .day-panel { padding: 20px; scroll-margin-top: calc(var(--study-sticky-offset) + 12px); }
  .day-panel .eyebrow { font-size: 10px; }
  .day-panel h2 { font-size: 25px; }
  .day-subtitle { font-size: 13px; }
  .selected-events { grid-template-columns: 1fr; margin-top: 17px; gap: 11px; }
  .event-card, .compact { padding: 17px 15px; gap: 12px; min-height: 86px; }
  .event-meta, .compact .event-meta { font-size: 12px; margin-bottom: 8px; gap: 6px; }
  .event-type { font-size: 10px; padding: 3px 6px; }
  .event-card h3, .compact h3, .upcoming-grid .event-card h3 { font-size: 14px; line-height: 1.5; }
  .event-card p { font-size: 12px; margin-top: 6px; }
  .event-arrow, .compact .event-arrow { width: 18px; height: 18px; }
  .day-footnote { font-size: 11px; padding-top: 18px; color: #858e7a; }
  .day-footnote .icon { width: 15px; height: 15px; }
  .quiet-empty h3 { font-size: 17px; }
  .quiet-empty p { font-size: 14px; }
  .upcoming-grid { grid-template-columns: 1fr; gap: 11px; }
  .event-date { width: 42px; }
  .event-date strong { font-size: 25px; }
  .event-date span { font-size: 11px; }
  .section-heading { margin-bottom: 15px; }
  .section-heading h2 { font-size: 19px; }
  .section-heading > span { font-size: 11px; }
  .text-link { min-height: 44px; font-size: 12px; line-height: 1.4; }
  .text-link .icon { width: 17px; height: 17px; }
  .subject-strip { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .subject-shortcut { min-height: 66px; padding: 12px; gap: 10px; font-size: 13px; }
  .subject-shortcut .subject-icon { width: 32px; height: 32px; }
  .subjects-grid, .practice-grid, .unit-list { grid-template-columns: 1fr; gap: 14px; }
  .subject-card { padding: 23px; }
  .subject-card h2 { font-size: 27px; }
  .subject-card p, .practice-card p { font-size: 14px; }
  .subject-card-top { font-size: 12px; }
  .subject-card-foot { font-size: 12px; flex-wrap: wrap; }
  .practice-card { padding: 23px; }
  .practice-card h2 { font-size: 22px; }
  .practice-card p { min-height: 0; }
  .practice-card .text-link { margin-top: 15px; }
  .subject-pill { font-size: 12px; }
  .subtle-note { padding: 22px 3px; }
  .subtle-note h3 { font-size: 15px; }
  .subtle-note p { font-size: 13px; }
  .subject-overview { margin-bottom: 27px; }
  .subject-overview h1 { font-size: 34px; }
  .subject-overview > p { font-size: 15px; }
  .unit-card { padding: 22px; gap: 13px; }
  .unit-card h2 { font-size: 23px; line-height: 1.25; }
  .unit-card-icon { width: 36px; height: 36px; }
  .unit-card .eyebrow { font-size: 10px; }
  .breadcrumbs { display: none; }
  .unit-hero { padding-bottom: 19px; }
  .unit-subject { display: none; }
  .unit-hero .eyebrow { font-size: 10px; }
  .unit-hero h1 { font-size: clamp(26px, 7vw, 32px); line-height: 1.18; }
  .unit-hero .law-unit-heading { font-size: 35px; }
  .unit-topic { font-size: 23px; line-height: 1.3; }
  .unit-description { font-size: 14px; line-height: 1.65; margin-top: 12px; }
  .unit-about { margin-top: 4px; }
  .unit-about summary { min-height: 44px; display: flex; align-items: center; gap: 8px; font-size: 13px; }
  .unit-about summary::after { content: '+'; font-size: 17px; color: #9aa58e; }
  .unit-about[open] summary::after { content: '−'; }
  .unit-about .unit-description { margin: 0 0 12px; }
  .event-banner { font-size: 12px; padding: 12px 13px; gap: 9px; line-height: 1.5; }
  .event-banner .banner-title { display: none; }
  .unit-event-links a { min-height: 44px; font-size: 12px; padding: 10px 12px; }
  .unit-tabs { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 6px; overflow: visible; margin-bottom: 19px; }
  .unit-tabs::-webkit-scrollbar { display: none; }
  .unit-tabs button { min-height: 48px; min-width: 0; justify-content: center; font-size: 13px; gap: 6px; padding: 12px 0; }
  .tab-label-long { display: none; }
  .tab-label-short { display: inline; }
  .unit-tabs .icon { width: 16px; height: 16px; }
  .module-frame { overflow: visible; border: 0; border-radius: 0; background: transparent; }
  .panel-intro h2 { font-size: 23px; }
  .panel-intro p { font-size: 14px; }
  .material-card { padding: 19px; }
  .material-card h3 { font-size: 16px; }
  .material-card p { font-size: 13px; }
  .material-card > span { min-height: 44px; font-size: 13px; }
  .empty-state { padding: 34px 19px; }
  .empty-state h2 { font-size: 22px; }
  .empty-state p { font-size: 14px; line-height: 1.7; }
  .progress-grid { gap: 9px; }
  .progress-card { padding: 20px 13px; }
  .progress-card strong { font-size: 31px; }
  .progress-card span { font-size: 12px; line-height: 1.5; }
  .button { min-height: 48px; font-size: 14px; padding: 11px 17px; }
  .storage-note { font-size: 12px; line-height: 1.7; }
  .loading-copy { padding: 30px 15px; font-size: 14px; }
  .site-footer { margin: 0 max(16px, env(safe-area-inset-right, 0px)) 0 max(16px, env(safe-area-inset-left, 0px)); padding: 20px 0 calc(var(--study-bottom-offset) + 22px); font-size: 11px; }
  .site-footer > span:last-child { width: 100%; margin-left: 0; font-size: 10px; }
  .footer-brand { min-height: 44px; display: flex; align-items: center; font-size: 20px; }
}

@media (max-width: 359px) {
  .calendar-panel { margin-inline: -16px; border-left: 0; border-right: 0; border-radius: 0; }
  .calendar-grid { padding-inline: 0; }
  .calendar-toolbar h2 { font-size: 18px; }
  .header-context { font-size: 11px; padding-left: 8px; }
  .brand-block { gap: 8px; }
  .subject-strip { grid-template-columns: 1fr; }
  .unit-card-icon { display: none; }
  .section-heading { gap: 8px; }
  .section-heading > span { max-width: 100px; text-align: right; }
}

@media (min-width: 600px) and (max-width: 900px) {
  .subjects-grid, .practice-grid, .unit-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .selected-events, .upcoming-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-height: 500px) and (max-width: 1000px) and (orientation: landscape) {
  :root { --study-sticky-offset: calc(56px + env(safe-area-inset-top, 0px)); --study-bottom-offset: calc(54px + env(safe-area-inset-bottom, 0px)); }
  .main-nav { padding-top: 3px; padding-bottom: calc(3px + env(safe-area-inset-bottom, 0px)); }
  .main-nav a { flex-direction: row; min-height: 44px; gap: 8px; }
  main { padding-top: 18px; }
  .page-intro h1 { font-size: 28px; }
  .page-intro { margin-bottom: 18px; }
}

@media (pointer: coarse), (max-width: 900px) {
  input, select, textarea { font-size: 16px; min-height: 44px; }
  button, .button { -webkit-tap-highlight-color: transparent; }
}