:root {
    --bg: #ebf5f7;
    --paper: rgba(248, 252, 253, 0.84);
    --paper-strong: #f9fdff;
    --ink: #0d2230;
    --muted: #55707d;
    --line: rgba(13, 34, 48, 0.12);
    --accent: #07b0bd;
    --accent-deep: #0a5f8f;
    --accent-soft: rgba(7, 176, 189, 0.14);
    --olive: #1f7e92;
    --shadow: 0 24px 60px rgba(18, 59, 79, 0.14);
    --glow-a: rgba(7, 176, 189, 0.28);
    --glow-b: rgba(10, 95, 143, 0.22);
    --glow-c: rgba(255, 255, 255, 0.55);
    --radius-xl: 30px;
    --radius-lg: 22px;
    --radius-md: 16px;
    --max-width: 1280px;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: "Avenir Next", "Segoe UI", sans-serif;
    color: var(--ink);
    background:
        radial-gradient(circle at 8% 10%, rgba(7, 176, 189, 0.24), transparent 0 24%),
        radial-gradient(circle at 86% 8%, rgba(10, 95, 143, 0.24), transparent 0 22%),
        radial-gradient(circle at 50% 38%, rgba(255, 255, 255, 0.72), transparent 0 30%),
        linear-gradient(180deg, #e4f2f6 0%, #eef8fb 42%, #e1edf4 100%);
    min-height: 100vh;
}

[hidden] {
    display: none !important;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(rgba(27, 36, 48, 0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(27, 36, 48, 0.025) 1px, transparent 1px);
    background-size: 48px 48px;
    pointer-events: none;
    mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.35), transparent 80%);
}

body::after {
    content: "";
    position: fixed;
    inset: auto -12% -22% auto;
    width: 540px;
    height: 540px;
    border-radius: 50%;
    background:
        radial-gradient(circle, rgba(7, 176, 189, 0.18), rgba(7, 176, 189, 0.06) 42%, transparent 68%);
    filter: blur(18px);
    pointer-events: none;
}

a {
    color: inherit;
    text-decoration: none;
}

.shell {
    width: min(var(--max-width), calc(100% - 40px));
    margin: 0 auto;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(18px) saturate(135%);
    background: rgba(235, 245, 247, 0.62);
    border-bottom: 1px solid rgba(13, 34, 48, 0.08);
    box-shadow: 0 10px 30px rgba(18, 59, 79, 0.05);
}

.site-header .shell {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 18px 0;
}

.brand {
    display: flex;
    align-items: center;
    gap: 14px;
}

.brand-mark {
    width: 52px;
    height: 52px;
    object-fit: contain;
    display: block;
}

.brand-copy strong {
    display: block;
    font-size: 1rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.brand-copy span {
    color: var(--muted);
    font-size: 0.92rem;
}

.site-nav {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.site-nav a {
    padding: 10px 14px;
    color: var(--muted);
    border-radius: 999px;
    transition: background-color 180ms ease, color 180ms ease, transform 180ms ease, box-shadow 180ms ease;
}

.site-nav a:hover {
    background: rgba(255, 255, 255, 0.72);
    color: var(--ink);
    transform: translateY(-1px);
    box-shadow: 0 12px 24px rgba(18, 59, 79, 0.08);
}

main {
    padding: 28px 0 72px;
}

section {
    margin-top: 26px;
}

.hero {
    position: relative;
    overflow: hidden;
    padding: 44px;
    border-radius: 36px;
    background:
        radial-gradient(circle at 50% 18%, rgba(255, 255, 255, 0.78), transparent 0 36%),
        radial-gradient(circle at 20% 90%, rgba(7, 176, 189, 0.12), transparent 0 32%),
        radial-gradient(circle at 88% 20%, rgba(10, 95, 143, 0.1), transparent 0 28%),
        linear-gradient(145deg, rgba(251, 254, 255, 0.98), rgba(229, 244, 249, 0.94)),
        var(--paper);
    border: 1px solid rgba(13, 34, 48, 0.08);
    box-shadow:
        0 40px 100px rgba(18, 59, 79, 0.14),
        inset 0 1px 0 rgba(255, 255, 255, 0.75);
}

.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: 
        radial-gradient(circle at 2px 2px, rgba(13, 34, 48, 0.04) 1px, transparent 0);
    background-size: 32px 32px;
    mask-image: radial-gradient(circle at 50% 50%, black, transparent 80%);
    pointer-events: none;
}

.hero::after {
    content: "";
    position: absolute;
    right: -110px;
    top: -100px;
    width: 520px;
    height: 520px;
    border-radius: 50%;
    background:
        radial-gradient(circle, rgba(7, 176, 189, 0.22), rgba(10, 95, 143, 0.1) 42%, transparent 68%);
    filter: blur(6px);
}

.hero-grid {
    position: relative;
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
    align-items: center;
    max-width: 1100px;
    margin: 0 auto;
    justify-items: center;
    text-align: center;
}

.hero-copy {
    max-width: 760px;
}

.hero-aside {
    display: flex;
    justify-content: center;
    align-items: flex-end;
    min-height: 100%;
    width: 100%;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    border-radius: 999px;
    background:
        linear-gradient(135deg, rgba(255, 255, 255, 0.9), rgba(216, 241, 246, 0.78));
    color: var(--accent-deep);
    font-size: 0.86rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    border: 1px solid rgba(10, 95, 143, 0.08);
    box-shadow: 0 12px 24px rgba(18, 59, 79, 0.08);
}

.hero h1,
.section-heading h2,
.text-stack h3,
.timeline-card h3,
.reference-card h3,
.footer-cta h2,
.policy-content h1,
.policy-content h2 {
    font-family: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", serif;
    font-weight: 700;
    letter-spacing: -0.03em;
}

.hero h1 {
    margin-top: 24px;
    font-size: clamp(3.5rem, 8vw, 6.5rem);
    line-height: 0.88;
    max-width: none;
    color: transparent;
    background:
        linear-gradient(180deg, #16334a 0%, #0a5f8f 48%, #0d2230 100%);
    -webkit-background-clip: text;
    background-clip: text;
    text-shadow: 0 18px 50px rgba(10, 95, 143, 0.12);
}

.hero-intro {
    margin-top: 28px;
    max-width: 48ch;
    margin-left: auto;
    margin-right: auto;
    color: var(--muted);
    font-size: 1.16rem;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    margin-top: 30px;
    justify-content: center;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 22px;
    border-radius: 999px;
    font-weight: 700;
    transition: transform 180ms ease, box-shadow 180ms ease, background-color 180ms ease, border-color 180ms ease;
}

.button.primary {
    color: var(--paper-strong);
    background:
        linear-gradient(135deg, #083f6a 0%, var(--accent-deep) 44%, var(--accent) 100%);
    box-shadow:
        0 18px 36px rgba(10, 95, 143, 0.22),
        inset 0 1px 0 rgba(255, 255, 255, 0.18);
}

.button.secondary {
    color: var(--ink);
    background: rgba(255, 255, 255, 0.72);
    border: 1px solid rgba(13, 34, 48, 0.08);
    backdrop-filter: blur(12px);
}

.button:hover {
    transform: translateY(-2px) scale(1.01);
}

.hero-meta {
    display: flex;
    justify-content: center;
}

.meta-card,
.section-card,
.timeline-card,
.visual-frame,
.text-frame,
.reference-card,
.policy-card {
    background: rgba(250, 253, 255, 0.84);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    box-shadow: 0 10px 30px rgba(18, 59, 79, 0.06);
}

.meta-card {
    min-width: 280px;
    max-width: 320px;
    padding: 24px 28px;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(234, 245, 250, 0.9));
    backdrop-filter: blur(22px) saturate(130%);
    border: 1px solid rgba(255, 255, 255, 0.6);
    box-shadow:
        0 30px 70px rgba(18, 59, 79, 0.16),
        inset 0 1px 0 rgba(255, 255, 255, 0.7);
}

.meta-card::before {
    content: "";
    display: block;
    width: 56px;
    height: 4px;
    margin-bottom: 18px;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--accent-deep), var(--accent));
}

.meta-card span {
    display: block;
    color: var(--muted);
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.meta-card strong {
    display: block;
    margin-top: 8px;
    font-size: 1.14rem;
    line-height: 1.35;
}

.section-card {
    padding: 30px;
    background:
        linear-gradient(180deg, rgba(252, 254, 255, 0.96), rgba(239, 247, 250, 0.92));
    border: 1px solid rgba(13, 34, 48, 0.08);
    box-shadow:
        0 20px 60px rgba(18, 59, 79, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.7);
}

.section-heading {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    align-items: end;
    margin-bottom: 24px;
}

.section-heading p {
    max-width: 42ch;
    color: var(--muted);
    line-height: 1.65;
}

.timeline-grid,
.reference-grid {
    display: grid;
    gap: 18px;
}

.kicker {
    display: inline-block;
    margin-bottom: 12px;
    color: var(--accent-deep);
    font-size: 0.82rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.timeline-card p,
.text-frame p,
.reference-card p,
.policy-content p,
.policy-content li {
    color: var(--muted);
    line-height: 1.65;
}

.instruction-layout {
    display: grid;
    gap: 22px;
}

.instruction-switcher {
    display: grid;
    gap: 22px;
}

.instruction-tabs {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    padding: 6px;
    width: fit-content;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.68);
    border: 1px solid rgba(13, 34, 48, 0.08);
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.7),
        0 18px 42px rgba(18, 59, 79, 0.08);
    backdrop-filter: blur(14px);
}

.instruction-tab {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 46px;
    padding: 0 18px;
    border: 1px solid rgba(13, 34, 48, 0.08);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.72);
    color: var(--ink);
    font-size: 0.95rem;
    font-weight: 700;
    transition: transform 180ms ease, background-color 180ms ease, box-shadow 180ms ease, color 180ms ease;
}

.instruction-tab:hover {
    transform: translateY(-1px);
}

.instruction-tab.is-active {
    background: linear-gradient(135deg, #083f6a 0%, var(--accent-deep) 44%, var(--accent) 100%);
    color: var(--paper-strong);
    box-shadow:
        0 16px 34px rgba(10, 95, 143, 0.24),
        inset 0 1px 0 rgba(255, 255, 255, 0.18);
}

.instruction-panel {
    display: grid;
    grid-template-columns: minmax(320px, 0.8fr) minmax(0, 1.2fr);
    gap: 22px;
    align-items: stretch;
}

.instruction-row {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
    gap: 22px;
    align-items: stretch;
}

.instruction-row.reverse {
    grid-template-columns: minmax(320px, 0.8fr) minmax(0, 1.2fr);
}

.visual-frame,
.text-frame {
    padding: 24px;
    min-height: 320px;
    border-radius: 26px;
}

.instruction-copy {
    align-content: center;
}

.visual-frame {
    position: relative;
    overflow: hidden;
    display: flex;
    background:
        radial-gradient(circle at 14% 18%, rgba(255, 255, 255, 0.75), transparent 0 22%),
        radial-gradient(circle at 86% 72%, rgba(7, 176, 189, 0.12), transparent 0 24%),
        linear-gradient(160deg, rgba(255, 255, 255, 0.96), rgba(232, 243, 247, 0.94));
}

.visual-frame::before {
    content: "";
    position: absolute;
    inset: 16px;
    border-radius: 20px;
    border: 1px solid rgba(10, 95, 143, 0.12);
}

.visual-inner {
    position: relative;
    z-index: 1;
    width: 100%;
    display: grid;
    align-content: start;
    gap: 18px;
}

.phone-gallery {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
    align-items: start;
}

.phone-gallery > div {
    min-width: 0;
}

.visual-label {
    width: fit-content;
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(13, 34, 48, 0.08);
    color: var(--muted);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.screen-mock {
    position: relative;
    width: min(100%, 230px);
    margin: 0 auto;
    border-radius: 22px;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.72);
    border: 1px solid rgba(13, 34, 48, 0.1);
    box-shadow:
        0 20px 42px rgba(18, 59, 79, 0.14),
        0 0 0 1px rgba(255, 255, 255, 0.3);
    transition: transform 220ms ease, box-shadow 220ms ease, border-color 220ms ease;
}

.screen-mock:hover {
    transform: translateY(-4px) scale(1.015);
    border-color: rgba(10, 95, 143, 0.16);
    box-shadow:
        0 28px 54px rgba(18, 59, 79, 0.18),
        0 0 0 1px rgba(255, 255, 255, 0.35);
}

.screen-image {
    width: 100%;
    height: auto;
    display: block;
}

.screen-mock::before {
    content: none;
}

.screen-mock::after {
    content: none;
}

.screen-note {
    display: grid;
    gap: 10px;
    color: var(--muted);
    font-size: 0.96rem;
}

.screen-caption {
    margin-top: 10px;
    text-align: center;
    color: var(--muted);
    font-size: 0.82rem;
    line-height: 1.45;
}

.text-frame {
    display: grid;
    gap: 14px;
    align-content: center;
}

.step-tag {
    display: inline-flex;
    width: fit-content;
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(7, 176, 189, 0.14);
    color: var(--accent-deep);
    font-size: 0.82rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.text-stack h3 {
    font-size: clamp(1.7rem, 3vw, 2.2rem);
    line-height: 1.08;
}

.text-stack p + p {
    margin-top: 2px;
}

.timeline-card,
.reference-card {
    padding: 20px;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(243, 249, 251, 0.92));
}

.timeline-index,
.feature-index {
    color: var(--accent-deep);
    font-size: 0.84rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.timeline-card h3,
.reference-card h3 {
    margin: 14px 0 8px;
    font-size: 1.2rem;
}

.reference-card {
    transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
    position: relative;
    overflow: hidden;
}

.reference-card::before {
    content: "";
    position: absolute;
    inset: -40% auto auto 55%;
    width: 180px;
    height: 180px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(7, 176, 189, 0.12), transparent 68%);
    pointer-events: none;
}

.reference-card:hover {
    transform: translateY(-2px);
    border-color: rgba(10, 95, 143, 0.16);
    box-shadow: 0 20px 40px rgba(18, 59, 79, 0.12);
}

.timeline-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.reference-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.reference-list {
    list-style: none;
    display: grid;
    gap: 12px;
    margin-top: 16px;
}

.reference-list li {
    padding-top: 12px;
    border-top: 1px solid rgba(13, 34, 48, 0.08);
}

.reference-list strong {
    color: var(--ink);
}

.site-footer {
    position: relative;
    z-index: 10;
    margin-top: 26px;
    padding-bottom: 16px;
}

.footer-cta {
    padding: 34px;
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 32px;
    align-items: flex-start;
    background:
        radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.16), transparent 0 24%),
        radial-gradient(circle at 86% 80%, rgba(255, 255, 255, 0.12), transparent 0 26%),
        linear-gradient(145deg, rgba(10, 95, 143, 0.98), rgba(7, 176, 189, 0.92)),
        var(--accent);
    color: var(--paper-strong);
    border-radius: 30px;
    box-shadow:
        0 24px 60px rgba(10, 95, 143, 0.22),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.footer-cta h2 {
    font-size: 2.25rem;
    margin-bottom: 20px;
}

.footer-cta p {
    color: rgba(255, 250, 244, 0.88);
    max-width: 52ch;
    font-size: 1.05rem;
    line-height: 1.7;
}

.footer-cta .kicker {
    color: #fff !important;
    opacity: 1 !important;
    margin-bottom: 16px;
}

.footer-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.footer-actions .button.primary {
    background: rgba(255, 250, 244, 0.94);
    color: var(--accent-deep);
    box-shadow: none;
}

.footer-actions .button.secondary {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 250, 244, 0.2);
    color: var(--paper-strong);
}

.fade-in {
    opacity: 0;
    transform: translateY(22px);
    animation: rise 700ms ease forwards;
}

.policy-page main {
    padding-top: 40px;
}

.policy-card {
    padding: 36px;
}

.policy-content {
    max-width: 820px;
    display: grid;
    gap: 18px;
}

.policy-content h1 {
    font-size: clamp(2.4rem, 5vw, 3.6rem);
    line-height: 0.98;
}

.policy-content h2 {
    margin-top: 18px;
    font-size: 1.55rem;
}

.policy-content ul {
    padding-left: 22px;
    display: grid;
    gap: 8px;
}

.policy-content hr {
    border: 0;
    border-top: 1px solid rgba(13, 34, 48, 0.1);
    margin-top: 12px;
}

.policy-meta {
    color: var(--accent-deep);
    font-size: 0.92rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.load-error {
    padding: 20px;
    color: #8a1f11;
    background: rgba(255, 240, 236, 0.92);
    border: 1px solid rgba(138, 31, 17, 0.14);
    border-radius: 16px;
}

@keyframes rise {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 1100px) {
    .hero-grid,
    .instruction-panel,
    .timeline-grid,
    .instruction-row,
    .instruction-row.reverse,
    .footer-cta {
        grid-template-columns: 1fr;
    }

    .timeline-grid,
    .reference-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .phone-gallery {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .footer-actions {
        justify-content: flex-start;
    }

    .hero-aside {
        justify-content: center;
    }
}

@media (max-width: 820px) {
    .shell {
        width: min(var(--max-width), calc(100% - 24px));
    }

    .site-header .shell,
    .section-card,
    .hero,
    .footer-cta,
    .policy-card {
        padding-left: 20px;
        padding-right: 20px;
    }

    .site-header .shell {
        align-items: flex-start;
        flex-direction: column;
    }

    .site-nav {
        width: 100%;
        justify-content: flex-start;
    }

    .hero,
    .policy-card {
        padding-top: 36px;
        padding-bottom: 32px;
    }

    .hero-copy,
    .meta-card {
        max-width: none;
    }

    .instruction-tabs {
        gap: 10px;
        width: 100%;
        border-radius: 24px;
    }

    .instruction-tab {
        flex: 1 1 160px;
    }

    .hero-meta {
        display: flex;
    }

    .meta-card {
        min-width: 0;
    }

    .timeline-grid,
    .reference-grid {
        grid-template-columns: 1fr;
    }

    .phone-gallery {
        grid-auto-flow: column;
        grid-auto-columns: minmax(72%, 280px);
        grid-template-columns: none;
        gap: 16px;
        overflow-x: auto;
        overflow-y: hidden;
        padding-bottom: 8px;
        scroll-snap-type: x mandatory;
        -webkit-overflow-scrolling: touch;
        overscroll-behavior-x: contain;
    }

    .phone-gallery > div {
        scroll-snap-align: center;
    }

    .visual-inner {
        gap: 14px;
    }

    .screen-mock {
        width: min(100%, 280px);
    }

    .section-heading {
        align-items: start;
        flex-direction: column;
    }

    .visual-frame,
    .text-frame {
        min-height: auto;
    }
}