.site-footer{align-items:center;gap:34px;padding:32px 24px}
.institution-logo{display:block;flex-shrink:0;padding:20px 25px}
.institution-logo img{display:block;max-width:100%;height:auto;width:166px}
.footer-course{font-size:.8125rem}
.tutor-link{margin-left:auto;font-size:.875rem;color:var(--text);line-height:1.7}
.tutor-link>span:first-child{display:block;font-family:Consolas,monospace;font-size:.6875rem;letter-spacing:.1em;color:var(--muted);margin-bottom:5px}
.listening-player .variant-options button,.resource-pill,.lesson-side a,.resource-type,.resource-action{font-size:.875rem}
.concepts p,.outcome p,.save-card p,.read-more p,.interactive-note,.resource-intro p{font-size:1rem}
.diagram-legend,.diagram-controls label,.measurement{font-size:.875rem}
.listening-player .listen-for{font-size:.9375rem}
.session-nav a{font-size:.875rem}
.wave-wrap{min-height:82px}
.blind-notice{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-size:.8125rem;color:var(--muted);padding:12px;text-align:center}
.listening-player:has(.reveal:not([open])) .wave{visibility:hidden}
.blind-comparison .wave{visibility:hidden}
.listening-player:has(.reveal[open]) .blind-notice{display:none}
.audio-fallback a{color:var(--accent);text-decoration:underline}
/* A clear, quiet teaching surface: stronger type, generous spacing and a focused player. */
:root{--bg:#f5f7fa;--panel-deep:#f1f5f7;--line:#dce4e8;--text:#182b36;--muted:#526570;--accent:#126b68;--soft:#e5f1ef;--radius:18px}
body{background-image:radial-gradient(ellipse at 90% 8%,#e5efef80,transparent 38rem);text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}
h1,h2,h3{font-weight:650}
h1{letter-spacing:-.045em;text-wrap:balance}
h2,h3{letter-spacing:-.025em}
.eyebrow{font-size:.75rem;letter-spacing:.11em}
.site-header{background:#ffffff;border-color:#e1e7eb}
.header-inner{min-height:92px;gap:64px}
.brand{font-size:1.0625rem;letter-spacing:-.015em}
.brand small{font-size:.75rem;letter-spacing:.13em}
.header-inner nav{gap:32px}
.header-inner nav a{font-weight:500}
.header-inner nav a[aria-current=page]{color:var(--accent)}
.header-inner nav a[aria-current=page]:after{bottom:-24px;height:3px;border-radius:3px 3px 0 0}
.header-note{font-size:.75rem;letter-spacing:.12em}
.lecturer-entry{margin-left:auto;border:1px solid #9bb1b6;border-radius:7px;padding:8px 13px;color:#365963;font-size:.8125rem;font-weight:500;white-space:nowrap}
.lecturer-entry:hover{background:var(--soft);border-color:var(--accent)}
@media(max-width:800px){.header-inner{flex-wrap:wrap}.header-inner .lecturer-entry{margin-left:auto}}
@media(max-width:520px){.header-inner .brand{order:0}.header-inner .lecturer-entry{order:1;font-size:.75rem;padding:7px 9px}.header-inner nav{order:2}.header-inner{column-gap:10px}}
main{padding-top:52px}
.intro{margin-bottom:42px;gap:36px}
.intro h1{font-size:clamp(2.6rem,4.3vw,3.9rem);line-height:1.07;margin:16px 0 22px}
.intro p{font-size:1.0625rem;line-height:1.75;max-width:540px}
.semester-meta{padding-bottom:9px;gap:25px}
.semester-meta strong{font-size:1.375rem;letter-spacing:-.03em}
.semester-meta span{font-size:.875rem}
.semester-meta>div+div{padding-left:25px}
.home-grid{grid-template-columns:minmax(0,1.18fr) minmax(360px,1fr);gap:48px;align-items:start}
.section-heading{margin-bottom:20px}
.section-heading h2{font-size:1.25rem;font-weight:650}
.session-list{border-top:0}
.session-row{grid-template-columns:44px 1fr 28px;gap:18px;padding:23px 12px;border-radius:10px;border-color:var(--line)}
.session-row:first-child{border-top:1px solid var(--line)}
.session-row:hover{padding-left:12px;background:#fff;box-shadow:0 4px 18px #233c4b08;color:var(--text)}
.session-number{display:grid;place-items:center;background:#e6eeef;color:#176463;width:42px;height:44px;border-radius:9px;font-size:.9375rem}
.session-row:hover .session-number{background:var(--accent);color:white}
.session-row h3{font-size:1.0625rem;line-height:1.4;font-weight:600;margin-bottom:5px}
.session-row p{font-size:.875rem;line-height:1.55}
.row-arrow{font-size:1.15rem;text-align:center}
.home-note{margin-top:16px;gap:18px;padding:18px 12px}
.home-note strong{font-size:.9375rem;font-weight:600}
.home-note p{font-size:.875rem;line-height:1.7}
.home-note .note-icon{font-size:1.25rem}
.listening-player{padding:28px;border-color:#d5e0e4;box-shadow:0 5px 22px #233c4b05}
.home-grid>.listening-player,.home-grid>aside>.listening-player{border-top:3px solid var(--accent);box-shadow:0 14px 44px #233c4b0b}
.player-top{margin-bottom:21px}
.player-top .eyebrow{font-size:.75rem}
.tag{font-size:.75rem;border:0;border-radius:20px;padding:4px 10px;background:#edf3f3;color:#48605f}
.listening-player h3{font-size:1.55rem;font-weight:650;margin-bottom:12px}
.listening-player .listen-for{font-size:1rem;line-height:1.7;margin-bottom:24px}
.listen-for strong{font-weight:600}
.variant-options{padding:4px;background:#edf2f4;border:1px solid #dce5e9;border-radius:10px;gap:4px;margin-bottom:22px}
.variant-options button{border:1px solid transparent;border-radius:7px;min-height:42px;font-weight:500;padding:8px 10px}
.variant-options button[aria-pressed=true]{background:white;border-color:#a2bcb8;color:#165f5a;box-shadow:0 2px 5px #183c3b0a}
.variant-options button:hover{background:#ffffffa6;border-color:#7eaaa2}
.wave-wrap{height:94px;border-radius:8px;background:linear-gradient(180deg,#eff6f5,#e9f2f1);padding:7px 0}
.playhead{width:2px;background:#23524d}
.seek-label{margin-top:5px;margin-bottom:20px}
.transport{gap:14px}
.play-button{width:46px;height:46px;box-shadow:0 3px 8px #126b681f;font-size:.9375rem;transition:background .15s,transform .15s}
.play-button:hover{transform:translateY(-1px)}
.play-button>span{pointer-events:none}
.icon-button{font-size:1.4rem}
.time{font-size:.8125rem}
.volume-label{font-size:.8125rem;gap:10px}
.volume{width:70px}
.loop-details{font-size:.875rem;margin-top:19px}
.loop-settings{display:flex;align-items:flex-start;justify-content:space-between;flex-wrap:wrap;column-gap:18px;margin-top:18px}
.loop-toggle{display:flex;align-items:center;gap:9px;font-size:.875rem;font-weight:500;min-height:40px;color:var(--text);cursor:pointer}
.loop-toggle input{width:16px;height:16px;accent-color:var(--accent);margin:0;cursor:pointer}
.loop-settings .loop-details{margin-top:0;margin-left:auto}
.loop-settings .loop-details summary{min-height:40px}
.loop-settings .loop-controls{max-width:100%;font-size:.8125rem}
.player-status{font-size:.8125rem;color:#526570;margin:12px 0}
.listening-player .micro{font-size:.8125rem;line-height:1.7;padding-top:17px;margin-top:18px}
.home-resource{background:#ffffffb3;margin-top:20px;padding:21px 25px;border-radius:14px;transition:border-color .2s,background .2s}
.home-resource:hover{background:white;border-color:#8aaea9}
.home-resource h3{font-size:1rem;font-weight:600}
.home-resource p{font-size:.875rem}
.breadcrumbs{font-size:.875rem;margin-bottom:28px}
.session-nav{background:white;box-shadow:0 3px 12px #233c4b04;border-radius:12px;margin-bottom:42px}
.session-nav a{padding:15px 17px;font-weight:500}
.session-nav b{font-size:.75rem;margin-bottom:7px}
.session-nav a:hover{background:#f2f7f6;color:var(--accent)}
.session-nav a[aria-current=page]{background:var(--soft);box-shadow:inset 0 -3px var(--accent)}
.lesson-head h1{max-width:870px;font-size:clamp(2.3rem,4vw,3.35rem);margin-top:16px;line-height:1.12}
.lesson-head .question{font-size:1.1875rem;line-height:1.7}
.outcome{background:#eaf1f280;padding:16px 22px;border-radius:0 10px 10px 0;margin-top:28px}
.outcome p{line-height:1.8;margin-top:9px}
.essential-resources{gap:10px;margin:28px 0 44px}
.resource-pill{padding:12px 16px;border-radius:8px;font-weight:500;box-shadow:0 2px 4px #233c4b03}
a.resource-pill:hover{border-color:#8aaea9;background:#fafffe}
.lesson-layout{gap:48px}
.lesson-side h2{font-weight:600;font-size:1.0625rem}
.lesson-side a{line-height:1.7}
.lesson-side .save-card{padding-top:25px}
.save-card p{line-height:1.8}
.concepts article{margin:27px 0}
.concepts h3{font-size:1.0625rem;font-weight:600;margin-bottom:10px}
.interactive{border-radius:16px;box-shadow:0 3px 15px #233c4b04}
.interactive-header{padding:26px 26px 0}
.interactive-header h2{font-size:1.3rem}
.interactive>.listening-player{box-shadow:none}
.reset{font-size:.875rem;border-color:#899e99;padding:7px 12px;background:#ffffff90}
.reset:hover{background:white;color:var(--accent)}
.read-more{padding:13px 0}
.read-more summary{font-size:1.0625rem;font-weight:600}
.read-more p{line-height:1.85}
.resource-intro{max-width:780px;margin-bottom:40px}
.resource-intro h1{font-size:clamp(2.3rem,4vw,3.35rem);margin:16px 0 20px;line-height:1.12}
.resource-intro p{font-size:1.0625rem;line-height:1.8}
.resource-group{margin-bottom:44px}
.resource-group h2{font-size:1.375rem;margin-bottom:18px}
.resource-table{background:#ffffffb3;border:1px solid var(--line);border-radius:14px;padding:0 22px}
.resource-row{padding:21px 0;gap:22px;grid-template-columns:minmax(0,1fr) 160px 128px}
.resource-row:last-child{border-bottom:0}
.resource-row strong{font-size:1rem;font-weight:600}
.resource-row p{font-size:.875rem;line-height:1.65;max-width:660px;margin-top:5px}
.resource-action a{font-weight:500;text-decoration:underline;text-underline-offset:4px;text-decoration-color:#adc9c3}
.resource-action a:hover{text-decoration-color:var(--accent)}
.resource-action .unavailable{font-size:.8125rem}
.glossary{gap:0 44px}
.glossary dt{font-weight:600}
.glossary dd{font-size:1rem;line-height:1.8}
.worksheet h1{font-size:clamp(2.3rem,4vw,3.1rem);line-height:1.12;margin-top:14px}
.worksheet legend{font-weight:600}
.worksheet textarea,.worksheet input[type=text]{border-color:#879e98;border-radius:8px;padding:12px}
.worksheet label{font-size:.9375rem}
.worksheet .worksheet-meta label{flex:1}
.button{font-weight:600;padding:12px 20px;border-radius:8px}
.delivery-checks{padding:22px 26px;border-radius:14px}
.site-footer{padding-top:30px;padding-bottom:30px;gap:36px}
.institution-logo{padding:17px 20px}
.footer-course{font-size:.875rem}
.tutor-link{font-size:.9375rem}
.tutor-link>span:first-child{font-size:.75rem;letter-spacing:.08em}
@media(max-width:1100px){.home-grid{gap:30px;grid-template-columns:minmax(0,1.1fr) minmax(330px,1fr)}.listening-player{padding:23px}.session-row{gap:13px;padding-left:7px;padding-right:7px}.session-row:hover{padding-left:7px}.header-inner{gap:42px}.lesson-layout{gap:30px}.volume-label{font-size:0}.semester-meta{gap:18px}.semester-meta>div+div{padding-left:18px}}
@media(max-width:800px){main{padding-top:36px}.intro{margin-bottom:34px}.intro h1{font-size:3rem}.home-grid{grid-template-columns:1fr;gap:28px}.lesson-layout{grid-template-columns:1fr}.session-nav a{padding:13px 11px}.header-inner{gap:28px}.header-inner nav{gap:22px}.header-inner nav a[aria-current=page]:after{bottom:-24px}.volume-label{font-size:.8125rem}.resource-row{grid-template-columns:minmax(0,1fr) 125px;gap:20px}.resource-type{display:none}.site-footer{gap:20px}.resource-table{padding:0 18px}}
@media(max-width:520px){.header-inner{min-height:0;gap:16px;padding:20px 20px 0}.header-inner nav a[aria-current=page]:after{bottom:0}.brand{font-size:1rem}.brand small{font-size:.75rem}.intro h1{font-size:2.65rem;line-height:1.08;margin:15px 0 20px}.intro .eyebrow{font-size:.75rem}.intro p{font-size:1rem}.session-row{grid-template-columns:34px 1fr 20px;gap:12px;padding:20px 0;border-radius:0}.session-row:hover{padding-left:0}.session-number{width:33px;height:38px;font-size:.8125rem;border-radius:7px}.session-row h3{font-size:1rem}.session-row p{font-size:.875rem}.home-note{padding:17px 0;gap:14px}.section-heading .micro{font-size:.8125rem}.listening-player{padding:21px 18px}.listening-player h3{font-size:1.4rem}.player-top{gap:8px}.player-top .eyebrow,.tag{font-size:.75rem}.tag{padding:3px 8px}.variant-options button{padding:8px 6px;white-space:normal}.transport{gap:10px}.time{font-size:.75rem}.volume-label{font-size:0;margin-left:auto}.volume{width:58px}.play-button{width:43px;height:43px}.home-resource{padding:20px}.lesson-head h1{font-size:2.3rem}.lesson-head .question{font-size:1.0625rem}.session-nav a{font-size:0;padding:12px 4px}.session-nav b{margin-bottom:0}.outcome{padding:14px 17px}.resource-pill{font-size:.875rem;padding:11px 12px}.interactive-header{padding:22px 18px 0}.interactive-header h2{font-size:1.1875rem}.resource-intro h1,.worksheet h1{font-size:2.3rem}.resource-table{padding:0 15px}.resource-row{grid-template-columns:minmax(0,1fr) 95px;gap:14px;padding:19px 0}.resource-row strong{font-size:.9375rem}.resource-row p,.resource-action{font-size:.875rem}.site-footer{gap:15px}.institution-logo{padding:20px}.tutor-link{margin-left:20px}.delivery-checks{padding:20px}.loop-controls{gap:8px}}
@media(max-width:360px){.listening-player{padding:19px 14px}.player-top .eyebrow{letter-spacing:.055em}.transport{gap:8px}.volume{width:48px}.time{font-size:.75rem}.session-row{gap:9px;grid-template-columns:33px 1fr 17px}.intro h1{font-size:2.35rem}}
@media(max-width:800px){.site-footer{gap:20px;padding:25px 0;flex-wrap:wrap}.institution-logo{padding:20px}.footer-course{display:none}.session-nav a{font-size:.75rem}}
@media(max-width:520px){.site-footer{align-items:flex-start;flex-direction:column;gap:15px}.institution-logo{padding:22px}.institution-logo img{width:155px}.tutor-link{margin-left:22px;margin-bottom:10px}.session-nav a{font-size:0}.session-nav a b{font-size:.875rem}.resource-pill{font-size:.875rem}.listening-player .variant-options button{font-size:.875rem}.resource-action{font-size:.875rem}}
@media print{.site-footer{display:none!important}.concepts p,.outcome p,.read-more p{font-size:11pt}.worksheet label.check-item,.delivery-checks label{color:#222}.worksheet textarea{min-height:70px}.worksheet :focus-visible{outline:none}}
@media print{body{background:white}main{padding:0}.worksheet h1{font-size:25pt}.worksheet label{font-size:10pt}.worksheet textarea,.worksheet input[type=text]{border-color:#999}.listening-player,.interactive,.resource-table{box-shadow:none;background:white}.outcome{background:white}.resource-intro h1{font-size:25pt}}
@media print{.loop-settings{display:none!important}}