/* Layout and design tokens matched to ui-new.html / screen.png. */
:root{--paper:#f8fafc;--ink:#0f172a;--muted:#64748b;--line:#e2e8f0;--accent:#0a8f6c;--soft:#ecfdf5;--blue:#0056d2}
body,button,input,select,textarea{font-family:'Plus Jakarta Sans',system-ui,sans-serif}body{background:#f8fafc;color:#0f172a}html{scroll-padding-top:105px}.nav{height:80px;padding-inline:max(32px,calc((100vw - 1216px)/2));gap:22px;background:#ffffffd1;backdrop-filter:blur(20px)}.brand{font-size:20px;font-weight:800;letter-spacing:-.6px;gap:12px;white-space:nowrap}.brand-mark{width:40px;height:40px;border-radius:16px;background:linear-gradient(35deg,#0056d2,#0a8f6c);font-size:20px;box-shadow:0 3px 5px #0056d233}.brand-pro{color:#0056d2}.nav-links{gap:4px;border:1px solid #e2e8f099;background:#f1f5f9b3;border-radius:40px;padding:6px;font-size:13px}.nav-links a{padding:9px 16px;white-space:nowrap;color:#475569}.nav-links a[aria-current=page]{color:#0056d2;background:#fff;box-shadow:0 1px 2px #0f172a0a;border-radius:30px}.nav-tools{gap:12px}.nav-tools .lang{border-radius:30px;background:#f1f5f9;min-height:30px;padding:5px 12px;font-size:11px}.nav-tools .button{border-radius:30px;color:#065f46;border:1px solid #0a8f6c33;background:#0a8f6c1a;min-height:38px;font-size:13px;padding:9px 20px;gap:8px}.nav-tools .ui-icon{width:15px;height:15px}
.reference-home{position:relative}.hero{position:relative;max-width:1280px;margin:auto;padding:64px 32px 128px;gap:32px;grid-template-columns:1fr 1fr;min-height:826px}.reference-home:before{content:'';position:absolute;pointer-events:none;top:0;left:10%;width:75%;height:360px;background:radial-gradient(ellipse at 45% 20%,#0a8f6c1a, #0056d20d 40%,transparent 72%);filter:blur(35px)}.hero-copy{position:relative}.hero-badge{display:inline-flex;align-items:center;gap:8px;border:1px solid #0056d233;background:linear-gradient(90deg,#0056d21a,#0a8f6c1a);border-radius:30px;padding:7px 14px;font-size:12px;font-weight:600;color:#0056d2;margin-bottom:26px}.hero-badge i{width:8px;height:8px;border-radius:50%;background:#10b981}.hero h1{font-size:54px;line-height:1.05;letter-spacing:-2px;font-weight:800;max-width:none;text-wrap:initial;margin:0 0 24px;color:#020617}.hero h1 span{background:linear-gradient(90deg,#0056d2,#2563eb,#0a8f6c);background-clip:text;color:transparent}.hero p{font-size:18px;line-height:1.65;max-width:570px;color:#475569}.hero .actions{margin:32px 0 38px;gap:16px}.hero .actions .button{border-radius:30px;padding:16px 28px;font-size:16px;font-weight:700;background:linear-gradient(100deg,#0056d2,#0a8f6c);box-shadow:0 5px 9px #0056d22a;border:1px solid #0056d233}.hero .actions .secondary{background:#0a8f6c1a;color:#065f46;box-shadow:none;border-color:#0a8f6c33;font-weight:500}.hero-trust{gap:20px;font-size:11px;color:#475569;flex-wrap:wrap}.hero-trust .ui-icon{width:14px;height:14px;color:#0a8f6c}.hero-trust span:nth-child(2) .ui-icon{color:#0056d2}
.learning-demo{border:1px solid #e2e8f0cc;border-radius:24px;background:#ffffffeb;box-shadow:0 24px 42px -16px #0056d219;scroll-margin-top:105px}.demo-chrome{position:relative;padding:16px 20px;background:#f1f5f9b3;gap:8px;height:45px}.demo-chrome i{height:12px;width:12px;background:#fb7185}.demo-chrome i:nth-child(2){background:#fbbf24}.demo-chrome i:nth-child(3){background:#34d399}.demo-chrome span{position:absolute;left:50%;transform:translateX(-50%);white-space:nowrap;font-family:ui-monospace,monospace;font-size:11px;letter-spacing:.6px}.demo-content{padding:24px}.demo-title{margin-bottom:22px}.demo-title strong{font-size:18px;color:#020617;font-weight:700;letter-spacing:-.3px}.demo-title small{font-size:12px;margin-top:3px}.demo-status{font-size:11px;padding:5px 12px;background:#ecfdf5;border:1px solid #a7f3d0;color:#047857}.demo-stage{height:220px;border-radius:16px;background:linear-gradient(#0f172a,#0b1528,#0f172a);position:relative;border:2px solid #020617;margin-bottom:20px}.demo-stage>span{position:absolute;right:10px;bottom:10px;font:9px ui-monospace,monospace;color:#67e8f9;padding:7px 10px;background:#ffffff1a;border:1px solid #ffffff1a;border-radius:7px}.demo-tabs{border-radius:16px;margin-bottom:18px;background:#f1f5f9;padding:4px}.demo-tabs button{font-size:11px;min-height:30px;padding:8px 6px;border-radius:12px;color:#0f172a}.demo-tabs button[aria-pressed=true]{color:#0056d2;box-shadow:none}.demo-body{min-height:125px}.demo-item{padding:16px 10px;border:0;gap:12px}.demo-item strong{font-size:12px;font-weight:700;color:#020617}.demo-item small{font-size:12px}.lesson-icon{width:32px;height:32px;border-radius:8px;color:#0056d2;background:#dbeafe}.lesson-icon.reading{background:#d1fae5;color:#059669}.lesson-icon .ui-icon{width:17px;height:17px}.demo-footer{justify-content:center;border:0;background:transparent;padding:0 20px 28px;font-size:10px;color:#94a3b8}.demo-note{padding:10px}.demo-note p{font-size:12px}.demo-key{padding:12px}.demo-key p{font-size:12px;margin:5px 0}.demo-key .key{margin-top:8px}
.guide-section{background:#fff;border-block:1px solid #e2e8f099;padding:64px 32px}.guide-heading{text-align:center}.guide-heading>span{color:#0056d2;font-size:12px;letter-spacing:2px;font-weight:700}.guide-heading h2{font-size:30px;letter-spacing:-1px;color:#020617;margin:10px 0 56px;font-weight:800}.journey{max-width:1216px;gap:32px;padding:0;border:0;margin:0 auto;grid-template-columns:repeat(3,1fr)}.journey-item{display:block;padding:32px;border:1px solid #e2e8f0;border-radius:24px;background:#f8fafccc}.journey-item+.journey-item{border:1px solid #e2e8f0}.journey-item>b{width:48px;height:48px;border-radius:16px;background:#dbeafe;color:#0056d2;font-size:18px;margin-bottom:24px}.journey-item:nth-child(2)>b{background:#d1fae5;color:#059669}.journey-item:nth-child(3)>b{background:#e0e7ff;color:#4f46e5}.journey-item strong{font-size:18px;color:#020617;font-weight:700}.journey-item p{font-size:14px;line-height:1.6;max-width:none;margin:12px 0 0;color:#475569}
.pricing-section{max-width:1280px;padding:96px 32px;margin:auto}.plans-heading{align-items:center;gap:40px}.plans-heading>div{flex:1}.plans-heading .section-title{font-size:36px;letter-spacing:-1.4px;color:#020617;margin:0 0 8px;font-weight:800}.plans-heading p{font-size:16px;color:#475569;max-width:none}.plans-heading .pricing-notice{width:384px;max-width:35%;background:#fff;border:1px solid #e2e8f0;border-radius:16px;padding:16px;font-size:11px;line-height:1.5;box-shadow:0 1px 2px #0f172a05}.plans-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;margin-top:64px;align-items:stretch}.plan-card{padding:30px 28px;border-radius:24px;border:1px solid #dbe4f0;background:#fff;box-shadow:0 8px 20px #0f172a03;min-height:500px}.plan-card[data-free=true]{background:#fff;border:1px solid #dbe4f0}.plan-card .pill{font-size:11px;font-weight:500;background:#f1f5f9;border-radius:20px;padding:5px 12px;color:#0f172a}.plan-card h3{font-size:20px;font-weight:700;margin:20px 0 0;color:#020617}.plan-card .price,.plan-card[data-free=true] .price{font-size:36px;font-weight:800;letter-spacing:-1.5px;margin:18px 0 4px;color:#020617;white-space:nowrap}.plan-card .micro{font-size:11px;color:#64748b}.plan-card ul{margin-top:24px;padding-top:24px;font-size:12px;line-height:1.6;flex:1}.plan-card li{margin-bottom:10px;color:#334155}.plan-card li:before{color:#059669;content:'✓';margin-right:6px;width:13px}.plan-card li.unavailable{text-decoration:line-through;color:#94a3b8}.plan-card li.unavailable:before{content:'×';color:#94a3b8}.plan-card>button,.plan-card>.button{border-radius:16px;font-size:13px;min-height:44px;padding:12px;margin-top:22px;background:#0a8f6c;color:#fff}.plan-card>.secondary{background:#f1f5f9;color:#0f172a}.plan-featured{border:2px solid #0056d2;transform:translateY(-8px);box-shadow:0 18px 35px #0056d20d}.plan-featured>button{background:linear-gradient(100deg,#0056d2,#0a8f6c);box-shadow:0 3px 6px #0056d233}.popular-badge{position:absolute;left:50%;top:-14px;transform:translateX(-50%);background:linear-gradient(100deg,#0056d2,#0a8f6c);color:#fff;border-radius:30px;padding:6px 16px;white-space:nowrap;font-size:11px;font-weight:700;box-shadow:0 3px 6px #0056d233}.plan-vip{background:linear-gradient(#101827,#020617);border-color:#020617}.plan-vip h3,.plan-vip .price,.plan-vip li{color:#fff}.plan-vip .micro{color:#cbd5e1}.plan-vip ul{border-color:#334155}.plan-vip .pill{background:#164e6380;border:1px solid #155e75;color:#a5f3fc}.plan-vip>button{background:#fff;color:#020617}.plan-vip li:before{color:#22d3ee}.footer{background:#fff;border-top:1px solid #e2e8f0;padding:40px max(32px,calc((100vw - 1216px)/2));font-size:11px;gap:30px;color:#64748b;align-items:center}.footer strong{color:#0f172a;font-weight:600}.footer a{white-space:nowrap;color:#64748b}
@media(max-width:1150px){.nav-links a{padding:8px 10px}.nav{padding-inline:24px;gap:14px}.brand{font-size:17px}.hero h1{font-size:44px}.hero{min-height:760px}.plan-card{padding:24px 20px}.plan-card .price{font-size:30px}.hero-trust{gap:12px}.plans-heading .section-title{font-size:32px}}
@media(max-width:960px){.nav{height:auto;min-height:80px;flex-wrap:wrap;padding-block:12px}.nav-links{order:3;width:100%;justify-content:center}.nav-tools{margin-left:auto}.hero{padding:55px 24px 75px;min-height:0;gap:26px}.hero h1{font-size:36px}.hero p{font-size:15px}.hero-badge{font-size:10px}.hero .actions .button{font-size:13px;padding:13px 20px}.demo-content{padding:18px}.demo-status{font-size:9px}.demo-title strong{font-size:16px}.journey{margin:0;gap:20px}.journey-item{padding:24px}.journey-item strong{font-size:16px}.plans-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}.plans-heading{flex-direction:column;align-items:start;gap:18px}.plans-heading .pricing-notice{max-width:100%;width:auto}.footer{flex-wrap:wrap}}
@media(max-width:640px){.nav{padding:12px 16px;gap:12px}.nav-links{justify-content:flex-start;overflow:auto;width:100%;font-size:11px;padding:4px}.nav-links a{padding:8px 10px}.nav-tools .button{padding:8px 12px;font-size:11px}.brand{font-size:15px}.brand-mark{width:32px;height:32px;border-radius:12px}.hero{grid-template-columns:1fr;padding:40px 22px 55px;gap:36px}.hero h1{font-size:38px;letter-spacing:-1.7px}.hero-badge{margin-bottom:24px}.hero .actions{margin-bottom:25px;gap:10px}.hero-trust{font-size:10px}.learning-demo{max-width:560px}.demo-title strong{font-size:17px}.demo-stage{height:200px}.guide-section{padding:48px 22px}.guide-heading h2{font-size:26px;margin-bottom:32px}.journey{grid-template-columns:1fr;gap:18px}.journey-item{padding:26px}.journey-item>b{margin-bottom:18px}.pricing-section{padding:54px 22px}.plans-heading .section-title{font-size:30px}.plans-heading p{font-size:14px}.plans-grid{grid-template-columns:1fr;margin-top:40px}.plan-card{min-height:410px;padding:28px}.plan-card .price{font-size:36px}.plan-featured{transform:none}.footer{padding:28px 22px;gap:15px;align-items:flex-start}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

@media(max-width:640px){.brand{font-size:14px;gap:8px}.nav-tools{gap:6px}.nav-tools .lang{width:49px;padding:5px 7px}.nav-tools .button{padding:8px 10px;gap:4px}.nav-links{scrollbar-width:none}.nav-links::-webkit-scrollbar{display:none}}
/* Homepage download and plan emphasis. */
.home-download{max-width:440px;margin:0 0 28px}.extension-download{display:flex;align-items:center;gap:14px;padding:15px 18px;border:1px solid #0056d226;border-radius:20px;background:#ffffffdc;color:#0f172a;box-shadow:0 5px 18px #0056d20a;transition:box-shadow .2s,transform .2s,border-color .2s}.extension-download:hover{border-color:#0056d270;box-shadow:0 8px 24px #0056d21a;transform:translateY(-2px)}.download-symbol{display:grid;place-items:center;width:40px;height:40px;border-radius:13px;background:linear-gradient(135deg,#0056d2,#0a8f6c);color:#fff;font-size:26px;flex-shrink:0}.extension-download strong{display:block;font-size:14px;font-weight:700}.extension-download small{display:block;color:#64748b;font-size:11px;margin-top:5px}.extension-download>.ui-icon{margin-left:auto;color:#0056d2;width:18px}.download-guide{margin-top:12px;color:#475569;font-size:12px}.download-guide summary{cursor:pointer;color:#0056d2;width:fit-content;padding:4px 0}.download-guide ol{padding-left:20px;line-height:1.8;margin:10px 0;max-width:58ch}.download-guide li{margin-bottom:6px}.download-unavailable{font-size:12px;color:#64748b}.plan-badges{display:flex;align-items:center;justify-content:space-between;gap:6px;flex-wrap:wrap}.saving-badge{display:inline-flex;border:1px solid #a7f3d0;background:#ecfdf5;color:#047857;font-size:10px;padding:4px 8px;border-radius:30px;white-space:nowrap;font-weight:600}.plan-annual{border-color:#a7d9c9;box-shadow:0 8px 22px #0a8f6c08}.plan-annual>button{background:#0a8f6c}.plan-vip{box-shadow:0 16px 28px #02061726}.plan-vip .lifetime-badge{background:#164e6380;border-color:#155e75;color:#a5f3fc}.plan-card li:has(+li){transition:color .15s}.plan-featured .plan-badges>.pill{background:#eff6ff;color:#0056d2}.plan-featured li{color:#0f172a}.plan-card{transition:box-shadow .2s,border-color .2s}.plan-card:hover{box-shadow:0 16px 32px #0056d212}.plan-vip:hover{box-shadow:0 20px 36px #02061733}@media(max-width:640px){.home-download{max-width:none;margin-bottom:24px}.extension-download{padding:14px}.extension-download strong{font-size:13px}.extension-download small{font-size:10px}.popular-badge{font-size:10px}}@media(prefers-reduced-motion:reduce){.extension-download,.plan-card{transition:none}.extension-download:hover{transform:none}}
/* Product screenshot replaces the empty hero stage. */
.demo-stage.demo-stage-image{background:#e2e8f0;border:1px solid #dce3ec;isolation:isolate}.demo-stage-image>img{display:block;width:100%;height:100%;object-fit:cover;object-position:center top}.demo-stage-image:after{content:'';position:absolute;inset:48% 0 0;background:linear-gradient(transparent,#0f172a55);pointer-events:none}.demo-image-caption{position:absolute;z-index:1;bottom:9px;left:9px;right:9px;display:flex;align-items:center;justify-content:space-between;gap:12px;background:#0f172ad9;color:white;padding:10px 12px;border-radius:10px;backdrop-filter:blur(8px);font-size:11px;line-height:1.4}.demo-image-caption strong{font-weight:600}.demo-image-caption span{color:#67e8f9;font-size:10px;white-space:nowrap}@media(max-width:640px){.demo-image-caption{font-size:9px;padding:8px}.demo-image-caption span{font-size:9px}}