@import url("https://fonts.googleapis.com/css2?family=Sora:wght@400;500;600;700;800;900&display=swap");:root{color-scheme:light;--bg-main:#5f6fe9;--bg-soft:#7281f7;--phone-shell:#f4f1ef;--phone-border:#bab3ad;--screen:#ffffff;--screen-muted:#f6f6fa;--text:#171717;--text-muted:#6f7485;--accent:#5467ea;--accent-dark:#4155db;--accent-soft:#dde4ff;--yellow:#ffc83b;--yellow-deep:#f7b800;--green:#65d27d;--coral:#ff6e6d;--peach:#ffc062;--border-soft:#e4e6ef;--shadow-phone:0 26px 46px rgba(29,35,88,0.18);--shadow-card:0 12px 22px rgba(24,31,76,0.1);--radius-lg:34px;--radius-md:20px;--radius-sm:14px}*{box-sizing:border-box}body,html{margin:0;min-height:100%}body{font-family:Sora,Inter,Segoe UI,Arial,sans-serif;color:var(--text);background:radial-gradient(circle at 20% 0,#7d88ff 0,rgba(125,136,255,0) 28%),radial-gradient(circle at 80% 10%,#7081ff 0,rgba(112,129,255,0) 24%),linear-gradient(180deg,#5f6fe9,#6070ea)}button,input,textarea{font:inherit}button{cursor:pointer}.vtalk-page{padding:28px 20px 40px}.scene-shell{max-width:1380px;margin:0 auto}.scene-copy{display:flex;justify-content:space-between;gap:24px;align-items:flex-start;margin-bottom:24px}.scene-badge{display:inline-flex;padding:10px 14px;border-radius:999px;background:rgba(255,255,255,.16);color:#ffffff;font-size:.82rem;font-weight:700}.scene-copy h1{margin:18px 0 10px;color:#ffffff;font-size:clamp(2.5rem,4vw,4.7rem);line-height:.96;letter-spacing:0}.scene-copy p{margin:0;max-width:680px;color:rgba(255,255,255,.92);line-height:1.65;font-size:1rem}.scene-status{display:grid;grid-gap:12px;gap:12px;justify-items:end;min-width:280px}.status-pill{min-height:40px;display:inline-flex;align-items:center;justify-content:center;padding:0 16px;border-radius:999px;font-size:.9rem;font-weight:700;border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.14);color:#ffffff;text-align:center}.status-pill--success{background:rgba(111,219,152,.2)}.status-pill--warning{background:rgba(255,200,59,.2)}.status-pill--danger{background:rgba(255,108,108,.24)}.ghost-action{min-height:42px;padding:0 16px;border-radius:999px;border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.1);color:#ffffff;font-weight:700}.phone-showcase{position:relative}.phone-showcase--mobile{display:flex;justify-content:center}.desktop-workspace{display:grid;grid-gap:18px;gap:18px}.desktop-hero,.desktop-panel{background:rgba(255,255,255,.94);border:1px solid rgba(255,255,255,.42);box-shadow:0 20px 40px rgba(26,34,86,.14);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.desktop-hero{border-radius:32px;padding:24px;display:grid;grid-template-columns:minmax(0,1.5fr) minmax(320px,.9fr);grid-gap:20px;gap:20px}.desktop-hero-copy h2,.desktop-panel-head h3{margin:8px 0 0;letter-spacing:0}.desktop-hero-copy h2{font-size:clamp(1.8rem,2vw,2.6rem);line-height:1.12}.desktop-hero-copy p{margin:14px 0 0;color:var(--text-muted);max-width:720px}.desktop-auth-inline,.desktop-head-actions,.desktop-hero-actions,.desktop-inline-meta,.desktop-status-list{display:flex;flex-wrap:wrap;gap:10px}.desktop-hero-actions{margin-top:22px}.desktop-primary,.desktop-secondary{min-height:46px;padding:0 18px;border-radius:999px;font-weight:800;border:none}.desktop-primary{background:var(--accent);color:#ffffff}.desktop-secondary,.ghost-action--dark{background:#eef1fd;color:#4450a0}.ghost-action--dark{border:none}.desktop-hero-side{display:grid;grid-gap:14px;gap:14px}.desktop-quick-card{border-radius:24px;padding:18px}.desktop-quick-card--lesson{background:linear-gradient(135deg,#ffd14f,#ffc53e)}.desktop-quick-card--status{background:#f7f8fe;border:1px solid var(--border-soft)}.desktop-quick-head{display:flex;justify-content:space-between;gap:10px;align-items:center}.desktop-chip{min-height:32px;padding:0 12px;border-radius:999px;background:rgba(84,103,234,.12);color:#4450a0}.desktop-chip,.desktop-lesson-icon{display:inline-flex;align-items:center;font-weight:800}.desktop-lesson-icon{width:86px;height:86px;margin:14px 0 12px;border-radius:50%;background:rgba(255,255,255,.34);justify-content:center;font-size:1.7rem}.desktop-quick-card strong{display:block;font-size:1.2rem}.desktop-auth-inline span,.desktop-metric p,.desktop-quick-card p{margin:6px 0 0;color:var(--text-muted);line-height:1.5}.desktop-auth-inline{display:grid;grid-gap:4px;gap:4px}.desktop-grid{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(300px,.85fr);grid-gap:18px;gap:18px}.desktop-panel{border-radius:28px;padding:22px}.desktop-panel-head{display:flex;justify-content:space-between;gap:14px;align-items:flex-start;margin-bottom:18px}.desktop-panel--camera{display:grid;grid-gap:18px;gap:18px}.desktop-camera-shell{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(250px,.8fr);grid-gap:18px;gap:18px;align-items:stretch}.desktop-camera-stage{position:relative;min-height:500px;border-radius:28px;overflow:hidden;background:linear-gradient(180deg,rgba(54,35,12,.1),rgba(54,35,12,.1)),url(/reference.webp) center 20% /180% auto no-repeat}.desktop-camera-insight{border-radius:24px;background:#fbfbfe;border:1px solid var(--border-soft);padding:18px;display:grid;grid-gap:18px;gap:18px;align-content:start}.desktop-metric strong{display:block;margin-top:6px;font-size:clamp(2rem,2.4vw,3.4rem);line-height:1}.desktop-inline-meta{color:var(--text-muted);font-size:.78rem;justify-content:space-between}.desktop-panel--sidebar{grid-row:span 2}.desktop-controls{display:grid;grid-gap:14px;gap:14px}.desktop-field{display:grid;grid-gap:8px;gap:8px}.desktop-field span{color:var(--text-muted);font-size:.84rem;font-weight:700}.desktop-field input{width:100%;border:1px solid var(--border-soft);background:var(--screen-muted);border-radius:16px;padding:12px 14px}.desktop-lesson-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-gap:12px;gap:12px}.tracker-grid--desktop{grid-template-columns:repeat(6,minmax(0,1fr));margin-bottom:16px}.desktop-transcript{min-height:110px;border-radius:20px;background:#f7f8fe;border:1px solid var(--border-soft);padding:16px;font-size:1.3rem;font-weight:800;line-height:1.5}.desktop-history-list{display:grid;grid-gap:10px;gap:10px;margin-top:12px}.phone-deck{align-items:center}.phone-deck--desktop,.phone-deck--mobile{display:none}.phone{transition:transform .18s ease,filter .18s ease}.phone--left{transform:translateY(56px) rotate(-.4deg)}.phone--center{transform:translateY(-18px)}.phone--right{transform:translateY(60px) rotate(.4deg)}.phone--focused{filter:drop-shadow(0 0 0 rgba(0,0,0,0))}.phone-showcase--home .phone--left,.phone-showcase--lesson .phone--center,.phone-showcase--live .phone--right{transform:translateY(0) scale(1.03)}.phone-shell{width:298px;height:606px;padding:10px 9px 12px;border-radius:28px;background:linear-gradient(180deg,#f7f6f5,#e9e4df);border:2px solid var(--phone-border);box-shadow:var(--shadow-phone);display:flex;flex-direction:column}.phone-notch{width:74px;height:6px;border-radius:999px;background:rgba(103,101,98,.58);margin:0 auto 7px}.phone-screen{border-radius:24px;overflow:hidden;background:var(--screen);padding:16px 14px 14px;flex:1 1;min-height:0;overflow-y:auto;display:flex;flex-direction:column;gap:14px;position:relative}.app-topbar,.confidence-strip,.feature-card-head,.live-meta,.modal-head,.section-row,.top-icon-row{display:flex;align-items:center;justify-content:space-between;gap:12px}.welcome-title{display:inline-flex;margin:0 0 6px;padding:4px 9px;border-radius:999px;background:#2a2368;border:1px solid rgba(255,255,255,.18);font-size:.92rem;font-weight:900;color:#ffffff;letter-spacing:.08em;line-height:1}.welcome-subtitle{margin:2px 0 0;color:#2a2368;font-size:.72rem;font-weight:800}.phone--left .phone-screen{background:linear-gradient(180deg,#6071eb,#f8f8fd 18%)}.icon-bubble{width:30px;height:30px;border-radius:10px;border:1px solid rgba(84,103,234,.18);background:#6778f0;color:#ffffff;display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto}.icon-bubble--flat{background:#7182f8}.login-action{min-height:34px;padding:0 10px;border:1px solid rgba(255,255,255,.26);border-radius:12px;background:#ffffff;color:var(--accent-dark);display:inline-flex;align-items:center;justify-content:center;gap:6px;flex:0 0 auto;font-size:.72rem;font-weight:900;box-shadow:0 8px 18px rgba(24,31,76,.12)}.top-icon-actions{display:flex;gap:8px}.feature-card,.feedback-card,.mini-section,.sign-day{border-radius:16px}.feature-card h3,.mini-section h3{margin:0;font-size:.95rem}.link-button{display:inline-flex;align-items:center;gap:6px;border:none;background:transparent;color:var(--accent);font-size:.72rem;font-weight:700;padding:0}.lesson-progress-card{border:1px solid #f3c538;background:linear-gradient(135deg,#ffc93e,#ffbd27);border-radius:18px;justify-content:space-between}.lesson-progress-card,.primary-flow-card{padding:16px;display:flex;align-items:center;gap:12px;box-shadow:var(--shadow-card)}.primary-flow-card{width:100%;border:1px solid rgba(84,103,234,.16);background:#ffffff;border-radius:18px;text-align:left}.primary-flow-card strong{display:block;color:var(--text);font-size:.95rem;line-height:1.22}.primary-flow-card p{margin:4px 0 0;color:var(--text-muted);font-size:.74rem;line-height:1.45}.primary-flow-card--quiet{justify-content:center;min-height:46px;padding:0 16px;text-align:center}.lesson-progress-content{display:flex;gap:12px;align-items:center;min-width:0;text-align:left}.account-summary strong,.action-strip strong,.history-item strong,.lesson-progress-card p,.lesson-progress-content strong,.sign-day strong{color:var(--text)}.account-summary span,.action-strip span,.feature-card p,.history-empty,.lesson-progress-content p,.live-helper{margin:4px 0 0;color:var(--text-muted);font-size:.76rem;line-height:1.45}.feature-sign,.lesson-card-glyph,.lesson-icon,.sign-gesture{display:inline-flex;align-items:center;justify-content:center}.lesson-icon{width:54px;height:54px;border-radius:14px;background:rgba(255,255,255,.36);font-size:1.7rem}.progress-ring{width:70px;height:70px;border-radius:50%;border:6px solid rgba(84,103,234,.15);border-top-color:#5f6fe9;display:grid;place-items:center;background:rgba(255,255,255,.34)}.progress-ring span{display:block;font-size:.95rem;font-weight:800}.progress-ring small{font-size:.58rem;color:var(--text-muted)}.tracker-grid{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));grid-gap:6px;gap:6px}.compact-section{display:grid;grid-gap:10px;gap:10px}.tracker-cell{min-height:46px;border-radius:12px;border:1px solid var(--border-soft);background:#ffffff;display:grid;place-items:center;color:var(--text-muted);font-size:.67rem;grid-gap:2px;gap:2px}.tracker-cell--done{background:#eff2ff;border-color:#cfd7ff;color:var(--accent-dark)}.sign-day{display:flex;justify-content:space-between;align-items:center;padding:14px 16px;background:#69d081;color:#ffffff}.card-label{display:inline-flex;font-size:.64rem;text-transform:uppercase;font-weight:800;letter-spacing:.04em;color:var(--text-muted)}.lesson-hero-text span,.sign-day .card-label{color:rgba(255,255,255,.78)}.sign-day strong{display:block;margin-top:4px}.sign-gesture{width:74px;height:38px;border-radius:12px;background:rgba(255,255,255,.22);font-size:1.3rem}.lesson-grid{display:grid;grid-template-columns:1fr 1fr;grid-gap:12px;gap:12px}.lesson-grid--simple .lesson-card{min-height:92px}.lesson-card{min-height:110px;border:none;border-radius:18px;padding:14px;display:flex;flex-direction:column;justify-content:space-between;text-align:left;box-shadow:var(--shadow-card)}.lesson-card strong{font-size:.82rem}.lesson-card--sun{background:linear-gradient(135deg,#ffcf48,#ffb52d)}.lesson-card--coral{background:linear-gradient(135deg,#ff7d7d,#ff6767)}.lesson-card--mint{background:linear-gradient(135deg,#9beab0,#65d27d)}.lesson-card-glyph{width:44px;height:44px;border-radius:14px;background:rgba(255,255,255,.3);font-size:1.45rem}.phone-nav{flex:0 0 auto;min-height:58px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));align-items:center;grid-gap:10px;gap:10px;border-top:1px solid var(--border-soft);padding:8px 14px 6px;background:var(--screen)}.phone-nav button{min-height:38px;border:none;background:transparent;color:#9096ab;border-radius:12px;display:inline-flex;align-items:center;justify-content:center}.phone-nav .nav-active{color:var(--accent-dark)}.phone-nav .nav-live{background:var(--accent);color:#ffffff;width:46px;height:42px;margin:0 auto;border-radius:14px}.phone--center .phone-screen{background:linear-gradient(180deg,#f8f8fd,#ffffff)}.lesson-hero{position:relative;min-height:236px;border-radius:24px;background:linear-gradient(180deg,rgba(10,18,36,.08),rgba(10,18,36,.08)),url(/reference.webp) center 16% /145% auto no-repeat;overflow:hidden}.lesson-hero--simple{min-height:172px}.camera-corners span,.hero-corners span{position:absolute;width:30px;height:30px;border-color:rgba(255,255,255,.95)}.camera-corners:after,.camera-corners:before,.hero-corners:after,.hero-corners:before{content:""}.camera-corners,.hero-corners{position:absolute;inset:18px;pointer-events:none}.camera-corners:after,.camera-corners:before,.hero-corners:after,.hero-corners:before{position:absolute;width:28px;height:28px;border:2px solid rgba(255,255,255,.95)}.camera-corners:before,.hero-corners:before{top:0;left:0;border-right:none;border-bottom:none;border-radius:8px 0 0 0}.camera-corners:after,.hero-corners:after{top:0;right:0;border-left:none;border-bottom:none;border-radius:0 8px 0 0}.camera-corners span:first-child,.hero-corners span:first-child{bottom:0;left:0;border:2px solid rgba(255,255,255,.95);border-top:none;border-right:none;border-radius:0 0 0 8px}.camera-corners span:nth-child(2),.hero-corners span:nth-child(2){bottom:0;right:0;border:2px solid rgba(255,255,255,.95);border-top:none;border-left:none;border-radius:0 0 8px 0}.lesson-hero-text{position:absolute;left:18px;right:18px;bottom:14px;color:#ffffff}.lesson-hero-text strong{display:block;margin-top:6px;font-size:1.05rem}.feature-card{padding:16px;background:linear-gradient(180deg,#ffd14f,#ffc53e);box-shadow:var(--shadow-card)}.status-dot{width:10px;height:10px;border-radius:50%}.status-dot--success{background:var(--green)}.status-dot--warning{background:var(--yellow-deep)}.status-dot--danger{background:var(--coral)}.status-dot--idle{background:#c5cbdb}.feature-sign{width:92px;height:92px;border-radius:50%;margin:18px auto 14px;background:rgba(255,255,255,.34);font-size:2.5rem}.feature-card h3{text-align:center;font-size:1.26rem;margin-top:4px}.feature-card p{text-align:center;margin-top:6px}.pager-row{display:flex;justify-content:center;gap:10px}.info-stack{display:grid;grid-gap:10px;gap:10px}.action-strip,.check-row,.feedback-card,.field-block input,.field-block textarea,.info-pill,.segmented,.submit-button{border-radius:16px}.info-pill{display:inline-flex;align-items:center;gap:8px;padding:10px 12px;background:#f4f6fd;color:#4f5673;font-size:.8rem;font-weight:700}.action-strip{border:1px solid var(--border-soft);background:#ffffff;padding:14px;display:flex;align-items:center;justify-content:space-between;gap:12px;text-align:left}.rotated-arrow{transform:rotate(180deg)}.phone--right .phone-screen{background:linear-gradient(180deg,#fbfbfe,#ffffff)}.camera-shell{flex:1 1;border-radius:24px;padding:0;overflow:hidden;background:#caa47f;display:flex;flex-direction:column}.camera-visual{position:relative;min-height:280px;background:linear-gradient(180deg,rgba(54,35,12,.1),rgba(54,35,12,.1)),url(/reference.webp) center 20% /212% auto no-repeat}.camera-fallback,.camera-video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}.camera-video{z-index:2;background:transparent}.camera-video--mirror{transform:scaleX(-1)}.camera-fallback{z-index:1}.hidden-canvas{display:none}.interpreter-sheet{margin-top:auto;background:#ffffff;padding:12px 14px 14px;border-radius:18px 18px 0 0;text-align:center}.live-letter{display:block;margin-top:4px;font-size:2.4rem;line-height:1}.confidence-bar{width:100%;height:8px;border-radius:999px;background:#eceffc;overflow:hidden}.confidence-bar-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,#7f91ff,#65d27d)}.live-action-row{display:grid;grid-template-columns:1fr 1fr;grid-gap:8px;gap:8px;margin-top:12px}.pill-button,.segmented button,.submit-button,.tag-button{min-height:42px;border:none}.pill-button{border-radius:14px;background:#eef1fd;color:#4450a0;font-weight:700}.pill-button--primary,.segmented--active,.submit-button{background:var(--accent);color:#ffffff}.live-meta{margin-top:10px;color:var(--text-muted);font-size:.7rem}.feedback-card{padding:12px;border:1px solid var(--border-soft);background:#ffffff}.transcript-line{min-height:46px;margin:10px 0;font-size:1rem;font-weight:700;line-height:1.5}.feedback-textarea,.field-block input,.field-block textarea{width:100%;border:1px solid var(--border-soft);background:var(--screen-muted);padding:12px 14px;color:var(--text)}.feedback-actions{display:grid;grid-template-columns:1fr;grid-gap:9px;gap:9px;margin-top:10px}.tag-button{width:100%;padding:0 14px;border-radius:14px;background:#eef1fd;color:#4450a0;font-size:.76rem;font-weight:800;text-align:center}.tag-button--correct{background:rgba(101,210,125,.18);border:1px solid rgba(35,115,67,.18);color:#237343}.tag-button--incorrect{background:rgba(255,110,109,.16);border:1px solid rgba(165,53,53,.18);color:#a53535}.tag-button--uncertain{background:rgba(255,200,59,.2);border:1px solid rgba(138,100,0,.18);color:#8a6400}.tag-button:disabled{opacity:.42;cursor:not-allowed}.history-stack{display:grid;grid-gap:8px;gap:8px;margin-top:12px}.history-item{display:grid;grid-template-columns:36px 1fr auto;align-items:center;grid-gap:8px;gap:8px;border-radius:14px;background:#f7f8fe;padding:10px 12px;font-size:.75rem}.history-item strong{width:36px;height:36px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;background:#e2e8ff;color:#4450a0}.history-empty{border-radius:14px;background:#f7f8fe;padding:12px}.modal-backdrop{position:fixed;inset:0;background:rgba(17,24,62,.36);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);display:grid;place-items:center;padding:20px;z-index:50}.modal-card{width:min(460px,100%);border-radius:28px;background:#ffffff;box-shadow:0 30px 80px rgba(23,31,78,.28);padding:20px}.modal-head h2{margin:8px 0 0;font-size:1.4rem}.modal-stack{display:grid;grid-gap:14px;gap:14px}.field-block{display:grid;grid-gap:8px;gap:8px}.field-block span{color:var(--text-muted);font-size:.84rem;font-weight:700}.segmented{display:grid;grid-template-columns:1fr 1fr;padding:6px;grid-gap:8px;gap:8px;background:#eef1fd}.segmented button{border-radius:12px;background:transparent;color:#4450a0;font-weight:700}.check-row{display:flex;align-items:center;gap:10px;padding:12px 14px;border:1px solid var(--border-soft);background:var(--screen-muted)}.submit-button{font-weight:800}.account-summary{display:grid;grid-gap:6px;gap:6px;padding:14px 0 0}@media (max-width:1200px){.scene-copy{flex-direction:column}.scene-status{width:100%;justify-items:start}.desktop-camera-shell,.desktop-grid,.desktop-hero{grid-template-columns:1fr}}@media (max-width:980px){.desktop-workspace{display:none}.phone{transform:none!important}}@media (max-width:560px){.vtalk-page{padding:18px 12px 32px}.scene-badge{font-size:.72rem;line-height:1.4}.scene-copy h1{font-size:2.5rem}.scene-copy p{font-size:.94rem}.phone-shell{width:min(100%,340px);min-height:610px}.phone-screen{min-height:580px}.tracker-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.lesson-grid,.live-action-row{grid-template-columns:1fr}}input,textarea{min-width:0}.field-block input,.field-block textarea{width:100%}.account-summary,.desktop-chip,.history-row,.modal-card,.status-pill{overflow-wrap:anywhere}video{max-width:100%}@media (max-width:720px){.scene-copy{gap:16px;margin-bottom:16px}.scene-status{grid-template-columns:1fr;gap:10px}.ghost-action,.status-pill{width:100%}.modal-backdrop{padding:12px;align-items:flex-start;overflow-y:auto}.modal-card{margin:16px 0;max-height:none}}@media (max-width:380px){.scene-copy h1{font-size:2.1rem}.phone-shell{width:100%;border-radius:28px}.phone-screen{padding-left:14px;padding-right:14px}}.vtalk-page{min-height:100vh;padding:24px 0;display:grid;place-items:center;background:radial-gradient(circle at 20% 0,#7d88ff 0,rgba(125,136,255,0) 28%),radial-gradient(circle at 80% 10%,#7081ff 0,rgba(112,129,255,0) 24%),linear-gradient(180deg,#5f6fe9,#6070ea)}.scene-shell{width:100%;max-width:none;min-height:calc(100vh - 48px);display:grid;place-items:center}.desktop-workspace,.scene-copy{display:none}.phone-showcase--mobile{width:100%;min-height:calc(100vh - 48px);display:grid;place-items:center}.phone{transform:none!important}.phone-shell{width:min(298px,100vw)}.vtalk-page--dark{color-scheme:dark;--phone-shell:#161b29;--phone-border:#343b52;--screen:#141824;--screen-muted:#1e2433;--text:#f6f7ff;--text-muted:#aeb6cc;--accent:#7f91ff;--accent-dark:#a8b4ff;--accent-soft:#252d4a;--border-soft:#2b3247;--shadow-phone:0 28px 54px rgba(2,6,23,0.42);--shadow-card:0 14px 28px rgba(2,6,23,0.24);background:radial-gradient(circle at 18% 0,rgba(127,145,255,.24),transparent 28rem),radial-gradient(circle at 82% 10%,rgba(101,210,125,.14),transparent 22rem),linear-gradient(180deg,#11162a,#171d34)}.vtalk-page--dark .phone-shell{background:linear-gradient(180deg,#232838,#151927)}.vtalk-page--dark .phone--center .phone-screen,.vtalk-page--dark .phone--right .phone-screen,.vtalk-page--dark .phone-nav,.vtalk-page--dark .phone-screen{background:linear-gradient(180deg,#171c2a,#121621)}.vtalk-page--dark .phone--left .phone-screen{background:linear-gradient(180deg,#3f4fc8,#151927 18%)}.vtalk-page--dark .action-strip,.vtalk-page--dark .check-row,.vtalk-page--dark .desktop-field input,.vtalk-page--dark .desktop-transcript,.vtalk-page--dark .feedback-card,.vtalk-page--dark .feedback-textarea,.vtalk-page--dark .field-block input,.vtalk-page--dark .field-block textarea,.vtalk-page--dark .history-empty,.vtalk-page--dark .history-item,.vtalk-page--dark .info-pill,.vtalk-page--dark .mini-section,.vtalk-page--dark .modal-card,.vtalk-page--dark .primary-flow-card,.vtalk-page--dark .segmented,.vtalk-page--dark .tracker-cell{background:var(--screen-muted);border-color:var(--border-soft);color:var(--text)}.vtalk-page--dark .account-summary strong,.vtalk-page--dark .action-strip strong,.vtalk-page--dark .desktop-transcript,.vtalk-page--dark .feature-card h3,.vtalk-page--dark .history-item strong,.vtalk-page--dark .lesson-card strong,.vtalk-page--dark .lesson-progress-card p,.vtalk-page--dark .lesson-progress-content strong,.vtalk-page--dark .primary-flow-card strong,.vtalk-page--dark .sign-day strong,.vtalk-page--dark .transcript-line{color:var(--text)}.vtalk-page--dark .account-summary span,.vtalk-page--dark .action-strip span,.vtalk-page--dark .desktop-field span,.vtalk-page--dark .feature-card p,.vtalk-page--dark .field-block span,.vtalk-page--dark .history-empty,.vtalk-page--dark .info-pill,.vtalk-page--dark .lesson-progress-content p,.vtalk-page--dark .live-helper,.vtalk-page--dark .live-meta,.vtalk-page--dark .phone-nav button,.vtalk-page--dark .primary-flow-card p{color:var(--text-muted)}.vtalk-page--dark .phone-nav .nav-active{color:var(--accent-dark)}.vtalk-page--dark .phone-nav .nav-live,.vtalk-page--dark .pill-button--primary,.vtalk-page--dark .segmented--active,.vtalk-page--dark .submit-button{color:#ffffff}.vtalk-page--dark .desktop-secondary,.vtalk-page--dark .ghost-action--dark,.vtalk-page--dark .login-action,.vtalk-page--dark .pill-button,.vtalk-page--dark .tag-button{background:#252d4a;color:#dce3ff}.vtalk-page--dark .tag-button--correct{background:rgba(101,210,125,.2);color:#91e7a7}.vtalk-page--dark .tag-button--incorrect{background:rgba(255,110,109,.2);color:#ffaaa9}.vtalk-page--dark .tag-button--uncertain{background:rgba(255,200,59,.2);color:#ffd86b}.vtalk-page--dark .modal-backdrop{background:rgba(3,7,18,.62)}.theme-toggle-button{background:rgba(255,255,255,.22)}.modal-card,.phone-nav,.phone-screen{scrollbar-width:thin}.feature-card h3,.feedback-card h3,.mini-section h3{line-height:1.22}.action-strip,.feature-card,.feedback-card,.info-pill,.lesson-card,.lesson-progress-card,.sign-day{text-wrap:balance}.lesson-card{align-items:center;text-align:center;gap:10px}.action-strip>div,.lesson-progress-content>div{min-width:0}.action-strip strong,.desktop-quick-card strong,.lesson-progress-content strong{display:block;font-size:.88rem;line-height:1.25}.feature-card h3{font-size:1.28rem}.action-strip span,.feature-card p,.history-empty,.lesson-progress-content p,.live-helper{font-size:.72rem}.info-pill{justify-content:center}.history-empty,.info-pill,.transcript-line{text-align:center}@media (max-width:560px){.vtalk-page{padding:0;min-height:100svh}.phone-showcase--mobile,.scene-shell{min-height:100svh;height:100svh;align-items:stretch}.phone-shell{width:100vw;height:100svh;min-height:0;padding:0;border:0;border-left:0;border-right:0;border-radius:0;box-shadow:none}.phone-notch{display:none}.phone-screen{flex:1 1;height:auto;min-height:0;border-radius:0;overflow-y:auto;padding:14px 12px 12px;gap:10px}.phone-nav{min-height:62px;padding-bottom:max(8px,env(safe-area-inset-bottom))}.lesson-hero{min-height:clamp(170px,34svh,236px)}.camera-visual{min-height:clamp(210px,39svh,320px)}.feature-sign{width:88px;height:88px;margin:10px auto;font-size:2.45rem}.camera-shell{flex:0 0 auto}.feedback-card{padding:12px}}@media (max-width:360px){.phone-screen{padding-left:10px;padding-right:10px}.tracker-grid{grid-template-columns:repeat(6,minmax(0,1fr))}.tracker-cell{min-height:38px;font-size:.62rem}.lesson-progress-card{padding:12px}.progress-ring{width:58px;height:58px}}