/* Prelaunch prototype: retain AUTELI's space, bring the product closer. */
.concept-page { --muted: #a1a9b2; }
.concept-page .preloader { display: none; }
.concept-page .hero-line > span { animation-duration: 1.3s; animation-delay: .12s; animation-timing-function: cubic-bezier(.25,.1,.25,1); }
.concept-page .hero-line:nth-child(2) > span { animation-delay: .22s; }
.concept-page .hero-line:nth-child(3) > span { animation-delay: .32s; }
.concept-page .hero { min-height: 88svh; padding-top: calc(var(--header-h) + 5vh); }
.concept-page .hero__copy { min-height: calc(88svh - var(--header-h) - 10vh); }
.concept-page .hero h1 { font-size: clamp(64px, 9vw, 144px); }
.concept-page .hero__footer p { max-width: 460px; font-size: 1.05rem; line-height: 1.75; }
.concept-page .eyebrow { font-size: .82rem; letter-spacing: .08em; flex-wrap: wrap; }
.concept-page .nav__link { font-size: .875rem; }
.concept-page .site-header { column-gap: 20px; }
.concept-page .signal-pill { font-size: .875rem; }
.concept-page .signal-pill small { font-size: .75rem; }
.concept-page .hero__coordinates { font-size: .75rem; }
.concept-page .orbit-button { min-height: 54px; font-size: .875rem; cursor: pointer; font-family: inherit; color: var(--ink); }
.concept-page .orbit-button:hover { color: var(--void); }
.concept-page .orbit-button:disabled { cursor: default; opacity: .55; }
.concept-page .text-link { font-size: .9rem; }
.concept-page .prototype-actions { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; margin-top: 36px; }
.concept-page .product-intro { position: relative; display: grid; grid-template-columns: 1.15fr 1fr; align-items: center; gap: 64px; padding: 110px var(--page-x); border-bottom: 1px solid var(--line); }
.concept-page .product-intro__copy { position: relative; z-index: 2; }
.concept-page .intro-identity { display: flex; align-items: center; gap: 15px; font-size: 1.4rem; margin: 32px 0; }
.concept-page .intro-identity img { border-radius: 24%; }
.concept-page h2 { font-size: clamp(38px, 4.4vw, 70px); line-height: 1.16; letter-spacing: -0.015em; font-weight: 400; }
.concept-page h2 em { color: var(--ivory); font-family: "Newsreader", Georgia, serif; font-weight: 500; }
.concept-page .product-intro h2 { margin: 0 0 26px; }
.concept-page .product-intro__copy > p:not(.eyebrow) { max-width: 530px; color: var(--muted); line-height: 1.8; font-size: 1.05rem; }
.concept-page .intro-benefits { list-style: none; padding: 0; margin: 28px 0; display: grid; gap: 13px; font-size: 1rem; }
.concept-page .intro-benefits li { display: flex; align-items: center; gap: 13px; }
.concept-page .intro-benefits li::before { content: ""; width: 5px; height: 5px; background: var(--ivory); border-radius: 50%; }
.concept-page .intro-device { position: relative; margin: 0; display: flex; align-items: center; flex-direction: column; gap: 24px; }
.concept-page .intro-device > img { position: relative; display: block; width: min(72%, 292px); height: auto; border: 5px solid #292729; border-radius: 38px; box-shadow: 0 36px 100px #000a, 0 0 80px #9775bd17; }
.concept-page .intro-device__orbit { position: absolute; width: 108%; aspect-ratio: 1; top: 12%; border: 1px solid #d9cbb226; border-radius: 50%; transform: rotateX(35deg) rotateZ(-30deg); }
.concept-page .intro-device figcaption { font-size: .8rem; color: var(--muted); text-align: center; }
.concept-page .method { padding-top: 90px; padding-bottom: 90px; }
.concept-page .method-card { padding: 28px; min-height: 270px; }
.concept-page .method-card p { font-size: 1rem; line-height: 1.7; }
.concept-page .method-card small { font-size: .75rem; }
.concept-page .method-card a, .concept-page .company__copy a { text-decoration: underline; text-underline-offset: 4px; }
.concept-page .company { padding-top: 90px; padding-bottom: 90px; }
.concept-page .company blockquote { font-size: clamp(38px, 4.3vw, 66px); line-height: 1.15; }
.concept-page .company__copy p { font-size: 1rem; line-height: 1.8; }
.concept-page .company__tags { font-size: .8rem; }
.concept-page .closing { min-height: 520px; padding-top: 90px; padding-bottom: 90px; }
.concept-page .product-hero { grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr); min-height: 90svh; padding-top: calc(var(--header-h) + 45px); gap: 36px; }
.concept-page .product-hero h1 { font-size: clamp(48px, 6.2vw, 94px); letter-spacing: -0.015em; line-height: 1.12; }
.concept-page .product-hero .hero-line { overflow: visible; }
.concept-page .product-identity { margin-bottom: 35px; }
.concept-page .product-hero__summary { max-width: 540px; font-size: 1.05rem; line-height: 1.8; margin-bottom: 30px; }
.concept-page .hero-demo-link { margin-left: 20px; }
.concept-page .phone-frame { width: min(100%, 288px); }
.concept-page .product-hero__visual { min-width: 0; }
.concept-page .walkthrough { position: relative; padding: 100px var(--page-x); border-bottom: 1px solid var(--line); background: linear-gradient(135deg, #080d14df, #080b10a1); }
.concept-page .walkthrough__heading { max-width: 730px; }
.concept-page .walkthrough__heading h2 { margin: 0 0 22px; }
.concept-page .walkthrough__heading > p:last-child { color: var(--muted); font-size: 1rem; }
.concept-page .walkthrough__grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 80px; align-items: center; margin-top: 45px; }
.concept-page .walkthrough__steps { display: grid; }
.concept-page .walkthrough-step { display: grid; grid-template-columns: 34px 1fr 22px; gap: 16px; padding: 28px 24px; border: 0; border-top: 1px solid var(--line); border-left: 2px solid transparent; text-align: left; color: var(--ink); background: transparent; font-family: inherit; cursor: pointer; transition: background .6s ease, border-color .6s ease; }
.concept-page .walkthrough-step:last-child { border-bottom: 1px solid var(--line); }
.concept-page .walkthrough-step:hover { background: #f1d7b208; }
.concept-page .walkthrough-step.is-selected { border-left-color: var(--ivory); background: #f1d7b20c; }
.concept-page .step-number { font: .875rem ui-monospace, monospace; color: var(--muted); padding-top: 5px; }
.concept-page .walkthrough-step strong { font-size: 1.2rem; font-weight: 400; line-height: 1.4; display: block; }
.concept-page .walkthrough-step small { display: block; font-size: 1rem; line-height: 1.7; margin-top: 12px; color: var(--muted); }
.concept-page .step-arrow { color: var(--ivory); opacity: 0; transition: opacity .6s ease; }
.concept-page .is-selected .step-arrow { opacity: 1; }
.concept-page .walkthrough-preview { margin: 0; text-align: center; min-width: 0; }
.concept-page .walkthrough-preview img { display: block; width: min(100%, 268px); height: auto; margin: 0 auto; border-radius: 32px; border: 4px solid #373138; box-shadow: 0 28px 70px #0008; transition: opacity .3s ease; }
.concept-page .walkthrough-preview img.is-changing { opacity: .25; }
.concept-page .walkthrough-preview figcaption { margin-top: 20px; color: var(--ivory); font: .8rem ui-monospace, monospace; }
.concept-page .walkthrough-note { color: var(--muted); font-size: .875rem; line-height: 1.7; margin: 40px 0 0; max-width: 650px; }
.concept-page .feature-deck { padding-top: 90px; padding-bottom: 80px; }
.concept-page .more-features-note { max-width: 460px; color: var(--muted); font-size: 1rem; line-height: 1.8; }
.concept-page .feature-row { padding-top: 44px; padding-bottom: 44px; }
.concept-page .feature-row__visual img { max-height: 540px; width: auto; max-width: 100%; }
.concept-page .feature-row__copy p { font-size: 1rem; line-height: 1.8; }
.concept-page .launch-section { display: grid; grid-template-columns: 1.2fr 1fr; gap: 80px; align-items: center; padding: 90px var(--page-x); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: radial-gradient(ellipse at 15% 50%, #9771461a, transparent 65%), #070a0dd9; }
.concept-page .launch-section__copy > img { border-radius: 16px; margin-bottom: 26px; }
.concept-page .launch-section h2 { font-size: clamp(38px, 4.1vw, 62px); margin: 0 0 22px; }
.concept-page .launch-section__copy > p:last-child { color: var(--muted); font-size: 1rem; line-height: 1.8; max-width: 480px; }
.concept-page .launch-form { width: 100%; max-width: 470px; }
.concept-page .launch-form label { display: block; margin-bottom: 12px; font-size: .9rem; }
.concept-page .launch-form input { display: block; width: 100%; border: 1px solid #c3c5d14d; border-radius: 9px; background: #10151a; padding: 17px 18px; font-family: inherit; font-size: 16px; color: var(--ink); }
.concept-page .launch-form input::placeholder { color: #8e98a3; }
.concept-page .launch-form .orbit-button { width: 100%; margin-top: 16px; }
.concept-page .launch-form__note { font-size: .8rem; color: var(--muted); line-height: 1.7; margin-top: 18px; }
.concept-page .launch-form__status { font-size: .9rem; color: var(--ivory); line-height: 1.7; }
.concept-page .product-faq { display: grid; grid-template-columns: .9fr 1.1fr; gap: 70px; padding: 100px var(--page-x); }
.concept-page .product-faq h2 { margin: 0; }
.concept-page .faq-list details { border-top: 1px solid var(--line); }
.concept-page .faq-list details:last-child { border-bottom: 1px solid var(--line); }
.concept-page .faq-list summary { cursor: pointer; padding: 23px 0; font-size: 1rem; list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 20px; }
.concept-page .faq-list summary::-webkit-details-marker { display: none; }
.concept-page .faq-list summary::after { content: "+"; color: var(--ivory); font-size: 1.3rem; }
.concept-page .faq-list details[open] summary::after { content: "−"; }
.concept-page .faq-list p { margin: 0 0 24px; line-height: 1.8; color: var(--muted); font-size: 1rem; }
.concept-page .faq-list a { text-decoration: underline; text-underline-offset: 4px; }
.concept-page .footer__links span, .concept-page .footer__base { font-size: .75rem !important; color: #969fa8 !important; }
.concept-page .footer__identity > p { color: var(--muted); }
.concept-page :is(button, a, input, summary):focus-visible { outline: 2px solid var(--cyan); outline-offset: 5px; }
@media (max-width: 1050px) {
  .concept-page .product-intro, .concept-page .walkthrough__grid, .concept-page .launch-section { gap: 36px; }
  .concept-page .product-hero { grid-template-columns: 1.25fr .75fr; }
  .concept-page .product-hero h1 { font-size: clamp(46px, 6.5vw, 72px); }
  .concept-page .hero-demo-link { display: table; margin: 20px 0 0; }
}
@media (max-width: 760px) {
  .concept-page .hero { min-height: auto; padding-top: calc(var(--header-h) + 48px); padding-bottom: 72px; }
  .concept-page .hero__copy { min-height: 650px; }
  .concept-page .hero h1 { font-size: clamp(56px, 12vw, 88px); }
  .concept-page .hero__coordinates { display: none; }
  .concept-page .product-intro, .concept-page .product-hero, .concept-page .walkthrough__grid, .concept-page .launch-section, .concept-page .product-faq { grid-template-columns: 1fr; }
  .concept-page .product-intro, .concept-page .walkthrough, .concept-page .launch-section, .concept-page .product-faq { padding-top: 65px; padding-bottom: 65px; }
  .concept-page .intro-device { margin-top: 32px; }
  .concept-page .intro-device__orbit { width: 90%; max-width: 450px; }
  .concept-page .product-hero { gap: 48px; padding-top: calc(var(--header-h) + 36px); padding-bottom: 65px; }
  .concept-page .product-hero h1 { font-size: clamp(44px, 9vw, 66px); }
  .concept-page .product-hero__visual { width: 100%; margin: 0 auto; }
  .concept-page .product-hero__visual { min-height: 570px; }
  .concept-page .phone-frame { width: min(70%, 260px); }
  .concept-page .product-orbit { max-width: 95%; }
  .concept-page .product-hero .scroll-cue { display: none; }
  .concept-page .walkthrough__grid { gap: 42px; }
  .concept-page .walkthrough-step { padding: 24px 14px; grid-template-columns: 24px 1fr 16px; gap: 12px; }
  .concept-page .walkthrough-step strong { font-size: 1.1rem; }
  .concept-page .walkthrough-preview img { width: min(70%, 270px); }
  .concept-page .product-faq { gap: 36px; }
  .concept-page .launch-section { gap: 32px; }
  .concept-page .launch-form { max-width: none; }
  .concept-page .feature-row__visual img { max-height: 480px; }
}
@media (prefers-reduced-motion: reduce) {
  .concept-page *, .concept-page *::before, .concept-page *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}
@media (max-width: 1100px) {
  .concept-page .site-header .nav__link span { display: none; }
  .concept-page .site-header .nav { gap: 12px; }
}
@media (max-width: 820px) {
  .concept-page { --header-h: 128px; }
  .concept-page .site-header,
  .concept-page .site-header.is-scrolled { height: auto; min-height: var(--header-h); padding-top: 10px; padding-bottom: 8px; grid-template-rows: 50px auto; }
  .concept-page .site-header .brand { grid-column: 1; grid-row: 1; }
  .concept-page .site-header .signal-pill { grid-column: 2; grid-row: 1; }
  .concept-page .site-header .nav { display: flex; grid-column: 1 / -1; grid-row: 2; justify-content: center; flex-wrap: wrap; column-gap: 16px; row-gap: 0; }
  .concept-page .site-header .nav__link { font-size: .82rem; min-height: 44px; align-items: center; padding: 8px 2px; }
}
@media (max-width: 440px) {
  .concept-page { --header-h: 162px; }
}