/* OfflineBox landing page. Green means safe: use it only for safe moments (checks, progress, main button, success). */
:root {
    --landing-ink: #15181b;
    --landing-ink-2: #1d2226;
    --landing-ink-3: #2a3036;
    --landing-paper: #ffffff;
    --landing-mist: #f4f4f1;
    --landing-text: #23272b;
    --landing-muted: #646b72;
    --landing-on-dark: #eef0ee;
    --landing-on-dark-muted: #9aa3a8;
    --landing-line: #e3e3de;
    --landing-green: #22a650;
    --landing-green-bright: #3fd172;
    --landing-risk: #b8573f;
    --landing-serif: "Fraunces", Georgia, "Times New Roman", serif;
    --landing-sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
    --landing-gutter: clamp(16px, 5vw, 64px);
}

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

html { scroll-behavior: smooth; }

body.landing {
    margin: 0;
    background: var(--landing-paper);
    color: var(--landing-text);
    font: 400 17px/1.65 var(--landing-sans);
    -webkit-font-smoothing: antialiased;
}

.landing img { max-width: 100%; height: auto; display: block; }
:where(.landing) :where(h1, h2, h3) { margin: 0; }

.landing-container {
    width: 100%;
    max-width: 1160px;
    margin: 0 auto;
    padding: 0 var(--landing-gutter);
}

/* Buttons */
.landing-button {
    display: inline-flex;
    align-items: center;
    gap: .5em;
    padding: .9em 1.6em;
    border: 0;
    border-radius: 999px;
    background: var(--landing-green);
    color: #fff;
    font: 600 1rem/1 var(--landing-sans);
    letter-spacing: .01em;
    text-decoration: none;
    cursor: pointer;
    transition: background .2s, transform .2s;
}
.landing-button:hover { background: #1c8f44; transform: translateY(-1px); }
.landing-button:focus-visible { outline: 3px solid var(--landing-green-bright); outline-offset: 3px; }
.landing-button::after { content: "\2193"; font-weight: 500; }

.landing-button-outline {
    background: transparent;
    color: var(--landing-ink);
    box-shadow: inset 0 0 0 1.5px var(--landing-ink);
}
.landing-button-outline:hover { background: var(--landing-ink); color: #fff; }
.landing-button-outline::after { content: "\2197"; }

/* Sticky header: slides in once the hero logo scrolls away (landing-261107.js) */
[id] { scroll-margin-top: 84px; }

.landing-bar {
    position: fixed;
    inset: 0 0 auto;
    z-index: 50;
    background: var(--landing-paper);
    border-bottom: 1px solid var(--landing-line);
    transform: translateY(-100%);
    visibility: hidden;
    transition: transform .3s ease, visibility 0s linear .3s;
}
.landing-bar.is-visible { transform: none; visibility: visible; transition: transform .3s ease; }

.landing-bar-inner { display: flex; align-items: center; gap: 28px; height: 68px; }
.landing-bar-logo { margin-right: auto; }
.landing-bar-logo img { width: 168px; mix-blend-mode: multiply; }
.landing-bar-nav { display: flex; gap: 28px; font-size: .93rem; }
.landing-bar-nav a { color: var(--landing-muted); text-decoration: none; white-space: nowrap; transition: color .2s; }
.landing-bar-nav a:hover { color: var(--landing-ink); }
.landing-bar-cta { padding: .7em 1.2em; font-size: .93rem; white-space: nowrap; }
.landing-bar-cta::after { content: none; }

.landing-bar-toggle {
    display: none;
    width: 44px;
    height: 44px;
    margin-right: -10px;
    padding: 0;
    border: 0;
    background: none;
    cursor: pointer;
}
.landing-bar-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    margin: 5px auto;
    border-radius: 2px;
    background: var(--landing-ink);
    transition: transform .2s;
}
.landing-bar.is-open .landing-bar-toggle span:first-child { transform: translateY(3.5px) rotate(45deg); }
.landing-bar.is-open .landing-bar-toggle span:last-child { transform: translateY(-3.5px) rotate(-45deg); }

/* Hero: the angled two-part banner */
.landing-hero {
    position: relative;
    display: grid;
    grid-template-columns: 1fr 1fr;
    min-height: min(92vh, 860px);
    background: var(--landing-ink);
}

.landing-hero-light {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    padding: 36px var(--landing-gutter) 72px;
    padding-right: 12%;
    background: var(--landing-paper);
    clip-path: polygon(0 0, 100% 0, 82% 100%, 0 100%);
    margin-right: -14%;
}

.landing-logo img { width: 240px; mix-blend-mode: multiply; }

.landing-hero-copy {
    margin: auto 0;
    padding-top: 48px;
    max-width: 520px;
}

.landing-eyebrow {
    margin: 0 0 18px;
    color: var(--landing-muted);
    font-size: .8rem;
    font-weight: 600;
    letter-spacing: .22em;
    text-transform: uppercase;
}

.landing-hero-heading {
    font: 400 clamp(1.3rem, 2vw, 1.6rem)/1.3 var(--landing-serif);
    color: var(--landing-green);
}

.landing-hero-body {
    margin: 14px 0 40px;
    max-width: 15ch;
    color: var(--landing-ink);
    font: 400 clamp(2.5rem, 5.4vw, 4.6rem)/1.04 var(--landing-serif);
    letter-spacing: -.02em;
}

.landing-hero-dark {
    position: relative;
    display: flex;
    flex-direction: column;
    padding: 36px var(--landing-gutter) 48px 18%;
    background:
        radial-gradient(ellipse at 60% 75%, rgba(63, 209, 114, .10), transparent 60%),
        var(--landing-ink);
    color: var(--landing-on-dark);
}

.landing-nav {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px 28px;
    font-size: .93rem;
}
.landing-nav a { color: var(--landing-on-dark-muted); text-decoration: none; white-space: nowrap; transition: color .2s; }
.landing-nav a:hover { color: #fff; }
.landing-nav .landing-nav-cta {
    padding: .55em 1.1em;
    border-radius: 999px;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .35);
    color: #fff;
}
.landing-nav .landing-nav-cta:hover { box-shadow: inset 0 0 0 1px var(--landing-green-bright); }

.landing-hero-image {
    width: 100%;
    max-width: 460px;
    margin: auto 0 auto auto;
    padding-top: 24px;
}

/* Sections */
.landing-section { padding: clamp(72px, 10vw, 128px) 0; }

.landing-heading {
    font: 400 clamp(2rem, 3.6vw, 2.9rem)/1.12 var(--landing-serif);
    letter-spacing: -.015em;
    color: var(--landing-ink);
    max-width: 22ch;
}
.landing-center { text-align: center; margin-left: auto; margin-right: auto; }

.landing-lead { color: var(--landing-muted); font-size: 1.15rem; max-width: 52ch; margin: 18px 0 0; }

.landing-rich { color: var(--landing-muted); font-size: 1.08rem; margin-top: 24px; }
.landing-rich p { margin: 0 0 1em; }

.landing-split {
    display: grid;
    grid-template-columns: 1.05fr .95fr;
    align-items: center;
    gap: clamp(40px, 7vw, 96px);
}
.landing-split-reverse .landing-split-image { order: -1; }
.landing-split-image { width: 100%; max-width: 480px; margin: 0 auto; }

/* Anonymized data points */
.landing-points {
    list-style: none;
    margin: clamp(56px, 7vw, 88px) 0 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.landing-point {
    padding: 28px;
    border: 1px solid var(--landing-line);
    border-radius: 16px;
    background: var(--landing-paper);
}
.landing-point h3 { font: 600 1.05rem/1.3 var(--landing-sans); color: var(--landing-ink); margin: 18px 0 6px; }
.landing-point p { margin: 0; color: var(--landing-muted); font-size: .98rem; }

.landing-check { width: 30px; height: 30px; flex: none; }
.landing-check circle { fill: rgba(34, 166, 80, .12); stroke: var(--landing-green); stroke-width: 1.2; }
.landing-check path { fill: none; stroke: var(--landing-green); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

/* Key message band */
.landing-band { background: var(--landing-ink); color: var(--landing-on-dark); padding: clamp(80px, 11vw, 140px) 0; }
.landing-band-inner { text-align: center; }
.landing-band-bar {
    display: block;
    width: 72px;
    height: 4px;
    margin: 0 auto 36px;
    border-radius: 4px;
    background: var(--landing-green-bright);
}
.landing-band-heading {
    font: 400 clamp(2.2rem, 5vw, 3.9rem)/1.08 var(--landing-serif);
    letter-spacing: -.02em;
    max-width: 18ch;
    margin: 0 auto;
}
.landing-band-body { margin: 24px auto 0; max-width: 46ch; color: var(--landing-on-dark-muted); font-size: 1.15rem; }

/* S3 problem */
.landing-s3 { background: var(--landing-mist); }
.landing-risk-list ul { list-style: none; padding: 0; margin: 0; }
.landing-risk-list li {
    position: relative;
    padding: 14px 0 14px 34px;
    border-bottom: 1px solid var(--landing-line);
}
.landing-risk-list li::before {
    content: "";
    position: absolute;
    left: 4px;
    top: 24px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    border: 2px solid var(--landing-risk);
}
.landing-closing {
    margin: 32px 0 0;
    padding-left: 20px;
    border-left: 3px solid var(--landing-green);
    color: var(--landing-ink);
    font: 400 1.35rem/1.4 var(--landing-serif);
}

/* How it works */
.landing-step-list {
    list-style: none;
    margin: 64px 0 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}
.landing-step h3 { font: 600 1.15rem/1.3 var(--landing-sans); color: var(--landing-ink); margin: 18px 0 8px; }
.landing-step p { margin: 0; color: var(--landing-muted); }
.landing-step-number {
    display: inline-grid;
    place-items: center;
    width: 52px;
    height: 52px;
    border-radius: 50%;
    border: 1px solid var(--landing-line);
    font: 500 1rem/1 var(--landing-serif);
    color: var(--landing-ink);
}
.landing-step-safe .landing-step-number { background: var(--landing-green); border-color: var(--landing-green); color: #fff; }

.landing-progress {
    margin-top: 56px;
    height: 6px;
    border-radius: 6px;
    background: var(--landing-line);
    overflow: hidden;
}
.landing-progress span {
    display: block;
    height: 100%;
    width: 100%;
    border-radius: 6px;
    background: linear-gradient(90deg, #cfd8d2, var(--landing-green) 70%, var(--landing-green-bright));
    transform-origin: left;
    animation: landing-fill 2.4s ease-out both;
}
@keyframes landing-fill { from { transform: scaleX(0); } to { transform: scaleX(1); } }

.landing-steps-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 48px;
}
.landing-button-outline.landing-button-down::after { content: "\2193"; }

/* Roadmap */
.landing-roadmap { background: var(--landing-mist); }
.landing-roadmap-list {
    list-style: none;
    margin: 48px 0 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}
.landing-roadmap-list li {
    padding: 22px 24px 22px 56px;
    position: relative;
    border: 1px dashed #c9cbc4;
    border-radius: 14px;
    background: var(--landing-paper);
}
.landing-roadmap-list li::before {
    content: "";
    position: absolute;
    left: 24px;
    top: 50%;
    width: 14px;
    height: 14px;
    margin-top: -7px;
    border-radius: 50%;
    border: 1.5px dashed var(--landing-muted);
}

.landing-roadmap-action { margin-top: 40px; }

/* Open source */
.landing-open-inner {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 32px;
    flex-wrap: wrap;
}

/* Signup */
.landing-signup {
    padding: clamp(80px, 10vw, 128px) 0;
    background:
        radial-gradient(ellipse at 15% 0%, rgba(63, 209, 114, .10), transparent 55%),
        var(--landing-ink-2);
    color: var(--landing-on-dark);
}
.landing-signup-inner { max-width: 820px; }
.landing-signup-heading {
    font: 400 clamp(2rem, 4.4vw, 3.3rem)/1.1 var(--landing-serif);
    letter-spacing: -.015em;
    max-width: 18ch;
    margin-bottom: 40px;
}

.landing-form {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    align-items: end;
    gap: 20px;
    padding: clamp(24px, 4vw, 40px);
    border-radius: 20px;
    background: var(--landing-ink-3);
    box-shadow: 0 30px 60px -30px rgba(0, 0, 0, .6);
}
.landing-field { display: flex; flex-direction: column; gap: 8px; font-size: .9rem; color: var(--landing-on-dark-muted); }
.landing-field-wide, .landing-form-alert, .landing-form-actions { grid-column: 1 / -1; }
.landing-field input,
.landing-field select {
    width: 100%;
    padding: .85em 1em;
    border: 1px solid #3c444b;
    border-radius: 10px;
    background: var(--landing-ink-2);
    color: #fff;
    font: 400 1rem/1.3 var(--landing-sans);
}
.landing-field input::placeholder { color: #6f787f; }
.landing-field input:focus,
.landing-field select:focus { outline: none; border-color: var(--landing-green-bright); box-shadow: 0 0 0 3px rgba(63, 209, 114, .2); }
.landing-field em { font-style: normal; color: #f0a48f; font-size: .85rem; }
.landing-form-alert { margin: 0; padding: 12px 16px; border-radius: 10px; background: rgba(184, 87, 63, .18); color: #f6c3b4; }
.landing-form-actions { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; margin-top: 4px; }
.landing-form-actions small { color: var(--landing-on-dark-muted); }
.landing-form .landing-button::after { content: none; }

.landing-honeypot { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.landing-success {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 24px 28px;
    border-radius: 16px;
    background: rgba(34, 166, 80, .12);
    border: 1px solid rgba(63, 209, 114, .4);
    font-size: 1.1rem;
}
.landing-success p { margin: 0; }
.landing-success .landing-check circle { fill: var(--landing-green); }
.landing-success .landing-check path { stroke: #fff; }

/* Footer */
.landing-footer { padding: 36px 0; border-top: 1px solid var(--landing-line); }
.landing-footer-inner { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }
.landing-footer img { width: 150px; mix-blend-mode: multiply; }
.landing-footer p { margin: 0; color: var(--landing-muted); font-size: .9rem; }

/* S3 illustration stays in view while its text scrolls (desktop only: the columns stack below 900px) */
@media (min-width: 901px) {
    .landing-s3 .landing-split { align-items: start; }
    .landing-s3 .landing-split-image { position: sticky; top: 100px; }
}

/* Tablet and phone */
@media (max-width: 900px) {
    .landing-hero { grid-template-columns: 1fr; min-height: 0; }
    .landing-hero-light {
        margin-right: 0;
        padding: 24px var(--landing-gutter) 96px;
        clip-path: polygon(0 0, 100% 0, 100% 88%, 0 100%);
    }
    .landing-hero-copy { padding-top: 40px; }
    .landing-hero-dark { margin-top: -64px; padding: 88px var(--landing-gutter) 48px; }
    .landing-nav { justify-content: center; order: 2; margin-top: 32px; }
    .landing-hero-image { margin: 0 auto; max-width: 340px; padding-top: 0; }
    .landing-split, .landing-points, .landing-step-list, .landing-roadmap-list { grid-template-columns: 1fr; }
    .landing-split-reverse .landing-split-image { order: 0; }
    .landing-split-image { max-width: 380px; }
    .landing-form { grid-template-columns: 1fr; }
}

@media (max-width: 1000px) {
    .landing-bar-inner { gap: 12px; height: 60px; }
    .landing-bar-logo img { width: 140px; }
    .landing-bar-toggle { display: block; }
    .landing-bar-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        gap: 0;
        padding: 8px var(--landing-gutter) 16px;
        background: #fff;
        border-bottom: 1px solid var(--landing-line);
        box-shadow: 0 16px 30px -20px rgba(0, 0, 0, .3);
    }
    .landing-bar-nav a { padding: 14px 0; border-bottom: 1px solid var(--landing-line); font-size: 1rem; color: var(--landing-ink); }
    .landing-bar-nav a:last-child { border-bottom: 0; }
    .landing-bar.is-open .landing-bar-nav { display: flex; }
}

@media (max-width: 480px) {
    .landing-steps-links .landing-button { width: 100%; justify-content: center; padding: .9em 1em; font-size: .92rem; }
    .landing-logo img { width: 190px; }
    .landing-nav { gap: 8px 18px; font-size: .88rem; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .landing-progress span { animation: none; }
}

.landing-footer p a { color: inherit; text-decoration: underline; text-decoration-color: var(--landing-line); text-underline-offset: 3px; }
.landing-footer p a:hover { color: var(--landing-ink); text-decoration-color: currentColor; }