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@media(max-width:1050px){.header nav{gap:15px;font-size:.8rem}.brand-name{font-size:1rem}.brand-logo{width:38px;height:38px;flex-basis:38px}}
@media(max-width:800px){.bonus-explanation{border-top-color:#bdcffa}.hero-lead{font-size:1.25rem}.hero h1{letter-spacing:-1.7px}}
@media(max-width:540px){.brand-name{font-size:.98rem}.brand-name small{font-size:.56rem;letter-spacing:.3px}.brand-logo{width:32px;height:32px;flex-basis:32px}.header-inner{column-gap:8px}.header .button-small{font-size:.8rem;padding:9px 11px}.hero h1{font-size:2.8rem;letter-spacing:-1.3px}.hero-lead{font-size:1.15rem}.hero .eyebrow{font-size:.7rem;letter-spacing:.7px}.photo-label{font-size:.77rem;padding:9px 12px}.photo-label img{width:20px;height:20px}.hero-photo{border-radius:20px}.differential h2{font-weight:500}.search-example{padding:17px}.bonus-panel{border-radius:20px}.footer-inner .brand-name{font-size:1rem}}
/* Professor portrait supplied by Rodrigo. */
.teacher-portrait{position:relative;margin:0;overflow:hidden;border-radius:24px;background:#000;isolation:isolate}
.teacher-portrait>img{width:100%;height:auto}
.teacher-portrait:after{content:'';position:absolute;inset:12px;border:1px solid #ffffff26;border-radius:16px;pointer-events:none}
.teacher-portrait figcaption{position:absolute;inset:auto 0 0;padding:45px 24px 24px;background:linear-gradient(transparent,#000e);color:#fff}
.teacher-portrait figcaption>span{display:block;font-size:.7rem;letter-spacing:1px;color:#e8eaed}
.teacher-portrait figcaption>strong{display:block;font-family:var(--heading);font-size:1.2rem;font-weight:500}
.teacher-photo-badge{position:absolute;top:24px;right:24px;display:flex;align-items:center;gap:8px;padding:10px 12px;background:#202124e8;color:#fff;border:1px solid #5f6368;border-radius:12px}
.teacher-photo-badge>strong{font-family:var(--heading);font-size:1.4rem;font-weight:500;line-height:1;color:#8ab4f8}
.teacher-photo-badge>span{font-size:.6rem;line-height:1.4;letter-spacing:.3px}
@media(max-width:800px){.teacher-photo-badge{top:18px;right:18px;padding:8px 10px}.teacher-portrait figcaption{padding:36px 20px 20px}}
@media(max-width:540px){.teacher-portrait{max-width:420px;width:100%;justify-self:center}.teacher-photo-badge{top:22px;right:22px}}
/* Bootstrap Icons v1.13.1, served as a local SVG sprite. */
.bi{display:inline-block;flex-shrink:0;vertical-align:-.125em}.bi use{pointer-events:none}
.beginner-note .bi{width:26px;height:26px}.included-tag .bi{width:16px;height:16px}.header .button-small .bi{width:18px;height:18px}
.faqs summary:after,.faqs details[open] summary:after{content:none}.faq-icon{position:absolute;right:3px;top:25px;width:18px;height:18px;color:var(--blue)}
.faqs summary .faq-icon-close{display:none}.faqs details[open] summary .faq-icon-open{display:none}.faqs details[open] summary .faq-icon-close{display:inline-block}
/* Gentle depth and entrance effects, with a fully static reduced-motion mode. */
.reveal-target{transition:opacity .65s ease var(--reveal-delay,0ms),translate .65s cubic-bezier(.2,.65,.3,1) var(--reveal-delay,0ms)}
.reveal-pending{opacity:0;translate:0 22px}
.search-artwork{margin:30px 0 0;padding:12px;background:#fff;border:1px solid #e8eaed;border-radius:24px;box-shadow:0 14px 40px #1a73e80c;transform:perspective(1000px) rotateX(var(--tilt-x,0deg)) rotateY(var(--tilt-y,0deg));transition:transform .25s ease,box-shadow .3s ease;isolation:isolate}
.search-artwork img{display:block;width:100%;height:auto;border-radius:15px;transform-origin:center}
.search-artwork figcaption{padding:12px 10px 7px;font-size:.78rem;line-height:1.6;color:#5f6368;text-align:center}
.search-artwork.is-visible img{animation:search-float 5s ease-in-out 2}
@keyframes search-float{0%,100%{transform:translateY(0)}50%{transform:translateY(-7px)}}
@media(hover:hover) and (pointer:fine){.step,.differential .feature-icon,.module,.teacher-portrait{transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}.step:hover{transform:translateY(-5px);border-color:#aecbfa;box-shadow:0 14px 30px #2021240b}.differential:hover .feature-icon{transform:translateY(-3px) scale(1.05)}.module:hover{transform:translateX(4px)}.teacher-portrait:hover{transform:translateY(-4px);box-shadow:0 16px 32px #20212415}.search-artwork:hover{box-shadow:0 20px 45px #1a73e817}.header nav a{transition:color .2s ease}.text-link{transition:color .2s ease,text-underline-offset .2s ease}.text-link:hover{text-underline-offset:9px}}
@media(prefers-reduced-motion:reduce){.reveal-pending{opacity:1;translate:none}.search-artwork,.search-artwork img,.step:hover,.module:hover,.teacher-portrait:hover,.differential:hover .feature-icon,.button:hover{transform:none!important}.search-artwork img{animation:none!important}}
@media print{.reveal-pending{opacity:1;translate:none}.search-artwork{transform:none}.floating-contact{display:none}}
.reveal-target{transition:opacity .65s ease var(--reveal-delay,0ms),translate .65s cubic-bezier(.2,.65,.3,1) var(--reveal-delay,0ms),transform .25s ease,box-shadow .25s ease,border-color .25s ease}
/* WhatsApp handoff: the same fonts, product identity, and shared script. */
.redirect-page{min-height:100vh;min-height:100svh;display:grid;place-items:center;padding:28px 20px;background:radial-gradient(ellipse at 50% 15%,#e8f0fe,#f8f9fa 65%)}
.redirect-card{width:min(100%,490px);padding:38px 32px;border:1px solid #dadce0;border-radius:24px;background:#fff;text-align:center;box-shadow:0 18px 65px #2021240b}
.redirect-card h1{font-size:clamp(1.9rem,6vw,2.4rem);letter-spacing:-1px;line-height:1.15;margin-bottom:18px}.redirect-card>p{font-size:.94rem}
.redirect-loader{width:54px;height:54px;margin:4px auto 28px;border:4px solid #e8f0fe;border-top-color:#4285f4;border-right-color:#34a853;border-radius:50%;animation:redirect-spin 1s linear infinite}
@keyframes redirect-spin{to{transform:rotate(360deg)}}
@media(prefers-reduced-motion:reduce){.redirect-loader{animation:none}}
@media(max-width:380px){.redirect-card{padding:28px 22px}.redirect-page{padding:18px}}
