:root {
    --ink: #132630;
    --ink-soft: #3f515a;
    --blueprint: #2f6586;
    --blueprint-dark: #173f59;
    --sky-wash: #e8f0f3;
    --paper: #f7f8f5;
    --white: #ffffff;
    --signal: #b84327;
    --line: #bfccd0;
    --display: "Source Serif 4", Georgia, serif;
    --body: "DM Sans", Arial, sans-serif;
    --utility: "IBM Plex Mono", "Courier New", monospace;
    --shadow: 0 24px 70px rgba(19, 38, 48, 0.16);
    --max-width: 1180px;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    background: var(--paper);
    color: var(--ink);
    font-family: var(--body);
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

body.menu-open { overflow: hidden; }

img { display: block; max-width: 100%; }
a { color: inherit; }
button, input { font: inherit; }

:focus-visible {
    outline: 3px solid var(--signal);
    outline-offset: 4px;
}

.skip-link {
    position: fixed;
    left: 1rem;
    top: 1rem;
    z-index: 200;
    padding: .7rem 1rem;
    background: var(--ink);
    color: var(--white);
    border-radius: 4px;
    transform: translateY(-180%);
    transition: transform .2s ease;
}

.skip-link:focus { transform: translateY(0); }

.site-header {
    position: fixed;
    inset: 0 0 auto;
    z-index: 100;
    border-bottom: 1px solid rgba(19, 38, 48, .12);
    background: rgba(247, 248, 245, .92);
    backdrop-filter: blur(18px);
}

.nav-shell, .section-shell, .hero-grid {
    width: min(calc(100% - 40px), var(--max-width));
    margin-inline: auto;
}

.nav-shell {
    min-height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: .65rem;
    color: var(--ink);
    font-family: var(--display);
    font-size: 1.2rem;
    font-weight: 700;
    text-decoration: none;
    white-space: nowrap;
}

.brand img { width: 32px; height: 32px; object-fit: contain; }

.nav-menu { display: flex; align-items: center; gap: clamp(1rem, 2.3vw, 2rem); }

.nav-menu > a {
    color: var(--ink-soft);
    font-size: .9rem;
    font-weight: 600;
    text-decoration: none;
}

.nav-menu > a:not(.nav-cta):hover { color: var(--blueprint); }

.nav-menu .nav-cta {
    padding: .7rem 1rem;
    border: 1px solid var(--ink);
    background: var(--ink);
    color: var(--white);
    border-radius: 3px;
    transition: background .2s ease, border-color .2s ease, transform .2s ease;
}

.nav-menu .nav-cta:hover { background: var(--blueprint); border-color: var(--blueprint); transform: translateY(-1px); }

.menu-toggle {
    width: 48px;
    height: 48px;
    display: none;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
    padding: 0;
    border: 0;
    background: transparent;
    cursor: pointer;
}

.menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--ink);
    transition: transform .2s ease, opacity .2s ease;
}

.menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

section[id] { scroll-margin-top: 72px; }

.hero {
    min-height: 780px;
    padding: 146px 0 104px;
    overflow: hidden;
    background:
        linear-gradient(rgba(47, 101, 134, .09) 1px, transparent 1px),
        linear-gradient(90deg, rgba(47, 101, 134, .09) 1px, transparent 1px),
        var(--sky-wash);
    background-size: 36px 36px;
}

.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, .92fr) minmax(440px, 1.08fr);
    gap: clamp(3rem, 7vw, 7rem);
    align-items: center;
}

.eyebrow {
    margin: 0 0 1.25rem;
    color: var(--blueprint);
    font-family: var(--utility);
    font-size: .75rem;
    font-weight: 500;
    letter-spacing: .12em;
    line-height: 1.4;
    text-transform: uppercase;
}

.eyebrow span { color: var(--white); background: var(--blueprint); padding: .3rem .45rem; }

.hero h1, .section-intro h2, .field-note-copy h2, .split-intro h2, .trust h2, .faq h2, .final-cta h2 {
    margin: 0;
    font-family: var(--display);
    font-weight: 600;
    letter-spacing: -.035em;
    line-height: 1.02;
}

.hero h1 { max-width: 720px; font-size: clamp(3.2rem, 6.3vw, 6rem); }
.hero h1 em { color: var(--blueprint); font-weight: 600; }

.hero-lede {
    max-width: 590px;
    margin: 1.75rem 0 2rem;
    color: var(--ink-soft);
    font-size: clamp(1.08rem, 1.6vw, 1.3rem);
    line-height: 1.55;
}

.hero-actions { display: flex; align-items: center; gap: 1.4rem; flex-wrap: wrap; }

.store-link {
    display: inline-block;
    border-radius: 8px;
    transition: transform .2s ease, box-shadow .2s ease;
}

.store-link:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(19, 38, 48, .16); }
.store-link img { height: 56px; width: auto; }

.text-link { color: var(--ink); font-size: .92rem; font-weight: 700; text-underline-offset: 5px; }
.text-link:hover { color: var(--blueprint); }

.availability { margin: .9rem 0 0; color: var(--ink-soft); font-size: .85rem; }
.availability > span:first-child { color: #176c45; font-size: .75rem; }
.availability .divider { color: var(--ink-soft); margin: 0 .45rem; }

.hero-proof {
    display: flex;
    flex-wrap: wrap;
    gap: .6rem 1.3rem;
    margin: 2.25rem 0 0;
    padding: 1rem 0 0;
    border-top: 1px solid var(--line);
    color: var(--ink-soft);
    font-family: var(--utility);
    font-size: .75rem;
    letter-spacing: .02em;
    list-style: none;
}

.hero-proof li::before { content: "✓"; color: var(--blueprint); margin-right: .4rem; }

.hero-visual { position: relative; min-height: 570px; }

.photo-frame {
    position: absolute;
    left: 2%;
    top: 12px;
    width: 64%;
    height: 510px;
    overflow: hidden;
    background: var(--ink);
    border: 10px solid var(--white);
    box-shadow: var(--shadow);
    transform: rotate(-1.5deg);
}

.photo-frame::after {
    content: "";
    position: absolute;
    inset: 0;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .45);
    pointer-events: none;
}

.photo-frame img { width: 100%; height: 100%; object-fit: cover; object-position: 51% 39%; filter: saturate(.78) contrast(1.05); }

.scan-line { position: absolute; inset: 50% 0 auto; height: 1px; background: rgba(255, 255, 255, .7); box-shadow: 0 0 12px rgba(255,255,255,.7); }

.target { position: absolute; width: 34px; height: 34px; border: 1px solid var(--white); }
.target::before, .target::after { content: ""; position: absolute; background: var(--white); }
.target::before { width: 50px; height: 1px; left: -9px; top: 16px; }
.target::after { width: 1px; height: 50px; left: 16px; top: -9px; }
.target-one { top: 27%; left: 35%; }
.target-two { bottom: 18%; right: 22%; transform: scale(.72); }

.result-card {
    position: absolute;
    z-index: 3;
    right: 0;
    bottom: 18px;
    width: 56%;
    padding: 1.45rem;
    background: var(--white);
    border-top: 5px solid var(--signal);
    box-shadow: 0 18px 50px rgba(19, 38, 48, .22);
}

.result-kicker { margin: 0 0 .5rem; color: var(--signal); font-family: var(--utility); font-size: .75rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.result-card h2 { margin: 0; font-family: var(--display); font-size: clamp(1.55rem, 2.5vw, 2.2rem); line-height: 1.05; }
.result-card dl { display: grid; grid-template-columns: repeat(3, 1fr); gap: .5rem; margin: 1.15rem 0; padding: .9rem 0; border-block: 1px solid var(--line); }
.result-card dt { color: var(--ink-soft); font-family: var(--utility); font-size: .75rem; font-weight: 700; letter-spacing: .05em; text-transform: uppercase; }
.result-card dd { margin: .15rem 0 0; font-size: .82rem; font-weight: 700; line-height: 1.35; }
.result-story { margin: 0; color: var(--ink-soft); font-size: .84rem; line-height: 1.6; }

.blueprint-label { position: absolute; z-index: 4; color: var(--blueprint); font-family: var(--utility); font-size: .75rem; font-weight: 700; letter-spacing: .07em; line-height: 1.55; }
.label-top { right: 1%; top: 0; text-align: right; }
.label-bottom { left: 0; bottom: 0; }

.measure-line { position: absolute; color: var(--blueprint); font-family: var(--utility); font-size: .75rem; }
.measure-vertical { right: -18px; top: 74px; height: 320px; width: 1px; border-left: 1px solid var(--blueprint); }
.measure-vertical::before, .measure-vertical::after { content: ""; position: absolute; left: -5px; width: 10px; height: 1px; background: var(--blueprint); }
.measure-vertical::before { top: 0; }
.measure-vertical::after { bottom: 0; }
.measure-vertical span { position: absolute; top: 48%; left: 7px; writing-mode: vertical-rl; }

.process { padding: 112px 0; background: var(--paper); }
.section-intro { max-width: 820px; margin-bottom: 4rem; }
.section-intro h2, .field-note-copy h2, .trust h2, .faq h2 { font-size: clamp(2.5rem, 4.6vw, 4.6rem); }

.process-list { margin: 0; padding: 0; border-top: 1px solid var(--line); list-style: none; }
.process-list li { display: grid; grid-template-columns: 90px 1fr; gap: 1rem; padding: 2rem 0; border-bottom: 1px solid var(--line); }
.step-index { color: var(--blueprint); font-family: var(--utility); font-size: .75rem; }
.process-list li > div { display: grid; grid-template-columns: minmax(230px, .7fr) 1fr; gap: 2rem; align-items: baseline; }
.process-list h3 { margin: 0; font-family: var(--display); font-size: 1.65rem; line-height: 1.2; }
.process-list p { max-width: 600px; margin: 0; color: var(--ink-soft); }

.field-note { padding: 112px 0; background: var(--blueprint-dark); color: var(--white); }
.field-note-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: clamp(3rem, 7vw, 7rem); align-items: center; }
.field-note-photo { position: relative; padding: 14px 14px 44px; background: var(--white); transform: rotate(-1deg); box-shadow: 0 22px 55px rgba(0,0,0,.28); }
.field-note-photo img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; filter: saturate(.75); }
.photo-caption { position: absolute; left: 16px; bottom: 12px; color: var(--ink); font-family: var(--utility); font-size: .75rem; letter-spacing: .04em; }
.field-note-copy .eyebrow { color: #9ec3d7; }
.note-summary { margin: 1.5rem 0 2.25rem; color: #d7e4e9; font-size: 1.15rem; }
.clue-list { border-top: 1px solid rgba(255,255,255,.2); }
.clue-list > div { display: grid; grid-template-columns: 40px 1fr; gap: .8rem; padding: 1.15rem 0; border-bottom: 1px solid rgba(255,255,255,.2); }
.clue-marker { width: 29px; height: 29px; display: grid; place-items: center; border: 1px solid #8cb8ce; border-radius: 50%; color: #d2e4ec; font-family: var(--utility); font-size: .75rem; }
.clue-list h3 { margin: 0 0 .25rem; font-family: var(--display); font-size: 1.15rem; }
.clue-list p { margin: 0; color: #cbdde5; font-size: .87rem; }
.accuracy-note { margin: 1.6rem 0 0; padding-left: 1rem; border-left: 3px solid var(--signal); color: #d0e0e7; font-size: .82rem; }
.accuracy-note strong { color: var(--white); }

.features { padding: 112px 0; background: var(--sky-wash); }
.split-intro { max-width: none; display: grid; grid-template-columns: 1fr .6fr; gap: 4rem; align-items: end; }
.split-intro h2 { max-width: 680px; font-size: clamp(2.5rem, 4.8vw, 4.8rem); }
.split-intro > p { margin: 0 0 .45rem; color: var(--ink-soft); font-size: 1.1rem; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-block: 1px solid var(--line); }
.feature-grid article { min-height: 320px; padding: 2rem; border-right: 1px solid var(--line); }
.feature-grid article:first-child { padding-left: 0; }
.feature-grid article:last-child { border-right: 0; }
.feature-glyph { display: inline-grid; place-items: center; width: 52px; height: 52px; margin-bottom: 4rem; border: 1px solid var(--blueprint); color: var(--blueprint); font-size: 1.5rem; }
.feature-grid h3 { margin: 0 0 .8rem; font-family: var(--display); font-size: 1.55rem; line-height: 1.15; }
.feature-grid p { margin: 0; color: var(--ink-soft); }

.trust { padding: 112px 0; background: var(--paper); }
.trust-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: clamp(3rem, 8vw, 8rem); }
.trust h2 { max-width: 520px; }
.trust-points { border-top: 1px solid var(--line); }
.trust-points article { padding: 1.5rem 0; border-bottom: 1px solid var(--line); }
.trust-points h3 { margin: 0 0 .4rem; font-size: 1rem; }
.trust-points p { margin: 0; color: var(--ink-soft); font-size: .9rem; }
.trust-points a { color: var(--blueprint); font-weight: 700; text-underline-offset: 3px; }

.faq { padding: 112px 0; background: var(--white); }
.faq-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: clamp(3rem, 8vw, 8rem); }
.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { position: relative; padding: 1.5rem 2.5rem 1.5rem 0; cursor: pointer; font-weight: 700; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; position: absolute; right: .25rem; top: 1.25rem; color: var(--blueprint); font-family: var(--utility); font-size: 1.4rem; }
.faq-list details[open] summary::after { content: "−"; }
.faq-list details p { margin: -.4rem 2.5rem 1.5rem 0; color: var(--ink-soft); }

.final-cta { padding: 112px 0; background: var(--signal); color: var(--white); text-align: center; }
.final-cta .eyebrow { color: var(--white); }
.final-cta h2 { max-width: 820px; margin-inline: auto; font-size: clamp(3rem, 6vw, 6rem); }
.final-cta p:not(.eyebrow) { margin: 1.4rem auto 1.8rem; font-size: 1.15rem; }
.final-cta .store-link { background: var(--ink); }
.final-cta .store-link img { height: 64px; }
.cta-meta { display: block; margin-top: .75rem; font-family: var(--utility); font-size: .75rem; font-weight: 700; letter-spacing: .04em; }

.site-footer { padding: 72px 0 24px; background: var(--ink); color: var(--white); }
.footer-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; padding-bottom: 4rem; }
.brand-light { color: var(--white); }
.footer-brand p { max-width: 330px; margin: 1rem 0 0; color: #aebdc4; }
.footer-links { display: grid; grid-template-columns: repeat(2, 1fr); gap: 3rem; }
.footer-links div { display: flex; flex-direction: column; align-items: flex-start; gap: .45rem; }
.footer-links h2 { margin: 0 0 .6rem; color: #a9bbc3; font-family: var(--utility); font-size: .75rem; letter-spacing: .08em; text-transform: uppercase; }
.footer-links a { color: #d7e0e3; font-size: .9rem; text-decoration: none; }
.footer-links a:hover { color: var(--white); text-decoration: underline; text-underline-offset: 4px; }
.footer-bottom { display: flex; justify-content: space-between; padding-top: 1.25rem; border-top: 1px solid #4b6069; color: #b6c4ca; font-family: var(--utility); font-size: .75rem; letter-spacing: .04em; text-transform: uppercase; }
.footer-bottom p { margin: 0; }

@media (max-width: 900px) {
    .menu-toggle { display: flex; }
    .nav-menu {
        position: fixed;
        inset: 72px 0 auto;
        min-height: calc(100dvh - 72px);
        display: flex;
        align-items: stretch;
        flex-direction: column;
        gap: 0;
        padding: 1rem 20px 2rem;
        background: var(--paper);
        border-top: 1px solid var(--line);
        transform: translateX(100%);
        visibility: hidden;
        transition: transform .25s ease, visibility .25s ease;
    }
    .nav-menu.is-open { transform: translateX(0); visibility: visible; }
    .nav-menu > a { padding: 1.1rem 0; border-bottom: 1px solid var(--line); font-family: var(--display); font-size: 1.55rem; }
    .nav-menu .nav-cta { margin-top: 1.5rem; padding: 1rem; border: 0; text-align: center; font-family: var(--body); font-size: 1rem; }

    .hero { min-height: auto; padding-top: 120px; }
    .hero-grid { grid-template-columns: 1fr; gap: 4rem; }
    .hero-copy { max-width: 700px; }
    .hero-visual { width: min(100%, 620px); min-height: 590px; margin-inline: auto; }
    .photo-frame { width: 68%; }
    .result-card { width: 54%; }

    .field-note-grid, .trust-grid, .faq-grid { grid-template-columns: 1fr; }
    .field-note-photo { max-width: 680px; }
    .split-intro { grid-template-columns: 1fr; gap: 1.5rem; }
}

@media (max-width: 680px) {
    .nav-shell, .section-shell, .hero-grid { width: min(calc(100% - 32px), var(--max-width)); }
    .hero { padding: 112px 0 72px; }
    .hero h1 { font-size: clamp(3rem, 15vw, 4.8rem); line-height: 1.08; }
    .hero-actions { align-items: flex-start; flex-direction: column; gap: 1rem; }
    .hero-proof { align-items: flex-start; flex-direction: column; }
    .availability .divider { display: none; }
    .availability { display: flex; flex-wrap: wrap; gap: .2rem .4rem; }

    .hero-visual { min-height: 540px; }
    .photo-frame { left: 0; width: 76%; height: 430px; }
    .result-card { right: 0; bottom: 20px; width: 70%; padding: 1.15rem; }
    .result-card dl { grid-template-columns: 1fr 1fr; }
    .result-card dl div:last-child { display: none; }
    .label-top { right: 0; }
    .measure-line { display: none; }

    .process, .field-note, .features, .trust, .faq, .final-cta { padding: 76px 0; }
    .section-intro { margin-bottom: 2.5rem; }
    .process-list li { grid-template-columns: 48px 1fr; padding: 1.5rem 0; }
    .process-list li > div { grid-template-columns: 1fr; gap: .6rem; }

    .field-note-grid { gap: 2.5rem; }
    .field-note-photo { padding: 8px 8px 38px; }
    .photo-caption { max-width: calc(100% - 32px); font-size: .75rem; line-height: 1.4; }
    .section-intro h2, .field-note-copy h2, .split-intro h2, .trust h2, .faq h2, .final-cta h2 { line-height: 1.1; }
    .feature-grid h3 { line-height: 1.22; }

    .feature-grid { grid-template-columns: 1fr; }
    .feature-grid article, .feature-grid article:first-child { min-height: 0; padding: 2rem 0; border-right: 0; border-bottom: 1px solid var(--line); }
    .feature-grid article:last-child { border-bottom: 0; }
    .feature-glyph { margin-bottom: 2rem; }

    .footer-grid { grid-template-columns: 1fr; gap: 3rem; padding-bottom: 3rem; }
    .footer-bottom { gap: .75rem; align-items: flex-start; flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}