:root {
    --paper: #f4f1e9;
    --paper-deep: #e9e3d8;
    --ink: #202824;
    --ink-soft: #55605a;
    --accent: #b34e38;
    --line: rgba(32, 40, 36, 0.18);
    --light-line: rgba(244, 241, 233, 0.22);
    --display: "Zen Kaku Gothic New", sans-serif;
    --latin: "DM Sans", sans-serif;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    color: var(--ink);
    background:
        radial-gradient(circle at 12% 8%, rgba(179, 78, 56, 0.055), transparent 28rem),
        var(--paper);
    font-family: var(--display);
    font-size: 1rem;
    line-height: 1.85;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
}

body::before {
    position: fixed;
    z-index: 4;
    inset: 0;
    pointer-events: none;
    content: "";
    opacity: 0.025;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.8'/%3E%3C/svg%3E");
}

::selection {
    color: var(--paper);
    background: var(--accent);
}

a {
    color: inherit;
}

img {
    display: block;
    max-width: 100%;
}

button,
a {
    -webkit-tap-highlight-color: transparent;
}

.skip-link {
    position: fixed;
    z-index: 50;
    top: 0.75rem;
    left: 0.75rem;
    padding: 0.7rem 1rem;
    color: var(--paper);
    background: var(--ink);
    transform: translateY(-180%);
    transition: transform 180ms ease;
}

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

.container {
    width: min(100% - 3rem, 74rem);
    margin-inline: auto;
}

.site-header {
    position: sticky;
    z-index: 20;
    top: 0;
    border-bottom: 1px solid var(--line);
    background: rgba(244, 241, 233, 0.9);
    backdrop-filter: blur(14px);
}

.header-inner {
    min-height: 4.75rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.brand-mark {
    width: 2rem;
    height: 2rem;
    display: grid;
    place-items: center;
    color: var(--paper);
    background: var(--accent);
    font-size: 0.88rem;
    line-height: 1;
}

.header-nav {
    display: flex;
    align-items: center;
    gap: 1.65rem;
    margin-left: auto;
}

.header-nav a {
    color: var(--ink-soft);
    text-decoration: none;
    font-size: 0.84rem;
    font-weight: 600;
    transition: color 180ms ease;
}

.header-nav a:hover {
    color: var(--accent);
}

.header-cta,
.button-primary,
.button-light {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 3rem;
    padding: 0.72rem 1.25rem 0.78rem;
    border: 1px solid transparent;
    border-radius: 0.2rem;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 700;
    line-height: 1.2;
    transition:
        color 180ms ease,
        background-color 180ms ease,
        border-color 180ms ease,
        transform 180ms ease;
}

.header-cta {
    min-height: 2.6rem;
    color: var(--paper);
    background: var(--ink);
}

.header-cta:hover,
.button-primary:hover {
    background: var(--accent);
    transform: translateY(-1px);
}

.header-cta:active,
.button-primary:active,
.button-light:active {
    transform: translateY(1px);
}

.hero {
    padding: clamp(4.5rem, 9vw, 8.5rem) 0 clamp(5rem, 10vw, 8.5rem);
}

.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.55fr) minmax(16rem, 0.45fr);
    gap: clamp(2.5rem, 6vw, 6rem);
    align-items: end;
}

.eyebrow {
    margin: 0 0 1.6rem;
    color: var(--accent);
    font-family: var(--latin);
    font-size: 0.76rem;
    font-weight: 700;
    letter-spacing: 0.16em;
    line-height: 1.4;
    text-transform: uppercase;
}

.hero h1 {
    max-width: 10ch;
    margin: 0;
    font-size: clamp(3.35rem, 7.5vw, 7.2rem);
    font-weight: 700;
    letter-spacing: -0.075em;
    line-height: 0.98;
    text-wrap: balance;
}

.hero h1 span {
    display: block;
}

.hero-title-sub {
    margin-top: 0.18em;
    color: var(--accent);
    font-size: 0.73em;
    letter-spacing: -0.055em;
}

.hero-meta {
    padding: 0.2rem 0 0.1rem 1.6rem;
    border-left: 1px solid var(--line);
}

.hero-date {
    margin: 0;
    font-family: var(--latin);
    font-size: clamp(2.1rem, 4.2vw, 4rem);
    font-weight: 600;
    letter-spacing: -0.055em;
    line-height: 1;
    font-variant-numeric: tabular-nums;
}

.hero-year {
    display: block;
    margin-top: 0.5rem;
    color: var(--ink-soft);
    font-family: var(--latin);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.12em;
}

.hero-location {
    max-width: 18rem;
    margin: 1.65rem 0 0;
    color: var(--ink-soft);
    font-size: 0.95rem;
}

.hero-visual {
    position: relative;
    margin: clamp(3.2rem, 7vw, 6rem) 0 0;
    overflow: hidden;
    background: var(--paper-deep);
}

.hero-visual::after {
    position: absolute;
    inset: 0;
    content: "";
    background: linear-gradient(180deg, transparent 58%, rgba(20, 28, 24, 0.25));
    pointer-events: none;
}

.hero-visual img {
    width: 100%;
    aspect-ratio: 1000 / 467;
    object-fit: cover;
    filter: saturate(0.86) contrast(1.02);
}

.hero-caption {
    position: absolute;
    z-index: 1;
    right: 1.25rem;
    bottom: 1rem;
    margin: 0;
    color: rgba(255, 255, 255, 0.9);
    font-family: var(--latin);
    font-size: 0.66rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.section {
    padding: clamp(5rem, 10vw, 9rem) 0;
    border-top: 1px solid var(--line);
    scroll-margin-top: 4.75rem;
}

.section-heading {
    display: grid;
    grid-template-columns: minmax(12rem, 0.7fr) minmax(0, 1.3fr);
    gap: clamp(2rem, 7vw, 7rem);
    align-items: start;
    margin-bottom: clamp(3rem, 7vw, 6rem);
}

.section-kicker {
    margin: 0;
    color: var(--accent);
    font-family: var(--latin);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    line-height: 1.5;
    text-transform: uppercase;
}

.section-title {
    margin: 0;
    max-width: 12ch;
    font-size: clamp(2.15rem, 4.5vw, 4.15rem);
    font-weight: 700;
    letter-spacing: -0.055em;
    line-height: 1.18;
    text-wrap: balance;
}

.section-lead {
    max-width: 44rem;
    margin: 1.8rem 0 0;
    color: var(--ink-soft);
    font-size: clamp(1rem, 1.5vw, 1.12rem);
    line-height: 2;
    text-wrap: pretty;
}

.about-layout {
    display: grid;
    grid-template-columns: minmax(15rem, 0.48fr) minmax(0, 1.12fr);
    gap: clamp(2.5rem, 6vw, 6rem);
    align-items: start;
}

.street-portrait {
    margin: 0;
}

.street-portrait-frame {
    position: relative;
    overflow: hidden;
    aspect-ratio: 4 / 5;
    background: var(--paper-deep);
}

.street-portrait-frame::after {
    position: absolute;
    inset: 0;
    content: "";
    pointer-events: none;
    box-shadow: inset 0 0 0 1px rgba(32, 40, 36, 0.12);
}

.street-portrait img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.feature-list {
    margin-left: clamp(0rem, 12vw, 10rem);
    border-top: 1px solid var(--line);
}

.about-layout .feature-list {
    margin-left: 0;
}

.feature-row {
    display: grid;
    grid-template-columns: 5rem minmax(12rem, 0.65fr) minmax(0, 1fr);
    gap: clamp(1rem, 4vw, 4rem);
    align-items: baseline;
    padding: 2.25rem 0 2.45rem;
    border-bottom: 1px solid var(--line);
}

.feature-index,
.step-number {
    color: var(--accent);
    font-family: var(--latin);
    font-size: 0.74rem;
    font-weight: 700;
    letter-spacing: 0.14em;
}

.feature-row h3 {
    margin: 0;
    font-size: clamp(1.25rem, 2vw, 1.6rem);
    font-weight: 700;
    letter-spacing: -0.025em;
}

.feature-row p {
    max-width: 34rem;
    margin: 0;
    color: var(--ink-soft);
    line-height: 1.9;
}

.illustration-break {
    width: min(100% - 3rem, 88rem);
    margin: 0 auto clamp(5rem, 10vw, 9rem);
}

.illustration-frame {
    position: relative;
    overflow: hidden;
    background: var(--paper-deep);
    aspect-ratio: 2 / 1;
}

.illustration-frame::after {
    position: absolute;
    inset: 0;
    content: "";
    pointer-events: none;
    box-shadow: inset 0 0 0 1px rgba(32, 40, 36, 0.12);
}

.illustration-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.program-section {
    color: var(--paper);
    background: var(--ink);
    border-top: 0;
}

.program-section .section-kicker {
    color: #dc8a73;
}

.program-section .section-title {
    max-width: 14ch;
}

.program-section .section-lead {
    color: rgba(244, 241, 233, 0.68);
}

.program-list {
    border-top: 1px solid var(--light-line);
}

.program-visual {
    width: min(100%, 52rem);
    margin: clamp(3.5rem, 7vw, 6rem) 0 0 auto;
}

.program-visual-frame {
    position: relative;
    overflow: hidden;
    aspect-ratio: 4 / 3;
    background: rgba(244, 241, 233, 0.08);
}

.program-visual-frame::after {
    position: absolute;
    inset: 0;
    content: "";
    pointer-events: none;
    box-shadow: inset 0 0 0 1px var(--light-line);
}

.program-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.program-row {
    display: grid;
    grid-template-columns: 2.5rem minmax(12rem, 0.6fr) minmax(0, 1fr) auto;
    gap: clamp(1rem, 4vw, 4rem);
    align-items: center;
    padding: 2.15rem 0 2.35rem;
    border-bottom: 1px solid var(--light-line);
}

.program-row h3,
.program-row p {
    margin: 0;
}

.program-row h3 {
    font-size: clamp(1.25rem, 2vw, 1.65rem);
    letter-spacing: -0.025em;
}

.program-row p {
    color: rgba(244, 241, 233, 0.68);
}

.program-status {
    color: #dc8a73;
    font-family: var(--latin);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    white-space: nowrap;
}

.program-mark {
    color: #dc8a73;
    font-family: var(--latin);
    font-size: 0.78rem;
}

.sponsor-section {
    background: var(--paper-deep);
}

.sponsor-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(18rem, 0.8fr);
    gap: clamp(3rem, 9vw, 8rem);
    align-items: end;
}

.sponsor-copy .section-title {
    max-width: 9ch;
}

.sponsor-copy p {
    max-width: 39rem;
    margin: 1.8rem 0 0;
    color: var(--ink-soft);
    line-height: 2;
}

.sponsor-amount {
    padding: 2rem 0 2.3rem;
    border-top: 1px solid var(--ink);
    border-bottom: 1px solid var(--ink);
}

.amount-label {
    margin: 0 0 1rem;
    color: var(--ink-soft);
    font-size: 0.82rem;
    font-weight: 600;
}

.amount {
    margin: 0;
    font-family: var(--latin);
    font-size: clamp(4rem, 8vw, 7.4rem);
    font-weight: 500;
    letter-spacing: -0.07em;
    line-height: 0.9;
    font-variant-numeric: tabular-nums;
}

.amount span {
    margin-left: 0.35rem;
    font-family: var(--display);
    font-size: 0.2em;
    font-weight: 700;
    letter-spacing: 0;
}

.amount-note {
    margin: 1.25rem 0 0;
    color: var(--ink-soft);
    font-size: 0.9rem;
}

.steps {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
    margin: 0;
    padding: 0;
    list-style: none;
    border-top: 1px solid var(--line);
}

.step {
    min-height: 17rem;
    padding: 2rem clamp(1.4rem, 3vw, 2.7rem) 2.4rem 0;
    border-bottom: 1px solid var(--line);
}

.step + .step {
    padding-left: clamp(1.4rem, 3vw, 2.7rem);
    border-left: 1px solid var(--line);
}

.step h3 {
    margin: 2.8rem 0 1rem;
    font-size: 1.25rem;
    line-height: 1.5;
}

.step p {
    margin: 0;
    color: var(--ink-soft);
    font-size: 0.94rem;
    line-height: 1.85;
}

.receipt-note {
    display: grid;
    grid-template-columns: 0.45fr 1.55fr;
    gap: clamp(2rem, 6vw, 6rem);
    margin-top: 3.2rem;
    padding-top: 2.1rem;
    border-top: 1px solid var(--line);
}

.receipt-note h3,
.receipt-note p {
    margin: 0;
}

.receipt-note h3 {
    font-size: 1rem;
}

.receipt-note p {
    max-width: 46rem;
    color: var(--ink-soft);
    font-size: 0.92rem;
}

.cta-section {
    padding: clamp(5rem, 10vw, 8rem) 0;
    color: var(--paper);
    background: var(--ink);
    scroll-margin-top: 4.75rem;
}

.cta-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 3rem;
    align-items: end;
}

.cta-title {
    max-width: 12ch;
    margin: 0;
    font-size: clamp(2.4rem, 5.5vw, 5rem);
    font-weight: 700;
    letter-spacing: -0.06em;
    line-height: 1.15;
    text-wrap: balance;
}

.cta-copy {
    max-width: 38rem;
    margin: 1.6rem 0 0;
    color: rgba(244, 241, 233, 0.68);
}

.button-light {
    min-width: 14rem;
    min-height: 3.5rem;
    color: var(--ink);
    background: var(--paper);
}

.button-light:hover {
    color: var(--paper);
    background: var(--accent);
    transform: translateY(-1px);
}

.cta-note {
    margin: 1.1rem 0 0;
    color: rgba(244, 241, 233, 0.54);
    font-size: 0.76rem;
}

.site-footer {
    padding: 3.5rem 0 2.8rem;
    color: rgba(244, 241, 233, 0.68);
    background: var(--ink);
    border-top: 1px solid var(--light-line);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr 1.6fr;
    gap: 3rem;
}

.footer-title {
    margin: 0;
    color: var(--paper);
    font-weight: 700;
}

.footer-meta {
    margin: 0;
    font-size: 0.84rem;
    line-height: 1.9;
}

.copyright {
    margin: 2.5rem 0 0;
    font-family: var(--latin);
    font-size: 0.68rem;
    letter-spacing: 0.07em;
}

:focus-visible {
    outline: 3px solid rgba(179, 78, 56, 0.45);
    outline-offset: 4px;
}

@media (max-width: 860px) {
    .header-nav {
        display: none;
    }

    .hero-grid,
    .section-heading,
    .about-layout,
    .sponsor-grid,
    .cta-grid,
    .footer-grid {
        grid-template-columns: 1fr;
    }

    .hero-meta {
        padding: 1.6rem 0 0;
        border-top: 1px solid var(--line);
        border-left: 0;
    }

    .hero-location {
        max-width: none;
        margin-top: 1rem;
    }

    .section-heading {
        gap: 1.4rem;
    }

    .feature-list {
        margin-left: 0;
    }

    .street-portrait {
        width: min(72%, 30rem);
    }

    .program-row {
        grid-template-columns: 2rem minmax(10rem, 0.75fr) minmax(0, 1fr);
    }

    .program-status {
        grid-column: 2 / -1;
    }

    .steps {
        grid-template-columns: 1fr;
    }

    .step {
        min-height: auto;
        padding: 2rem 0 2.35rem;
    }

    .step + .step {
        padding-left: 0;
        border-left: 0;
    }

    .step h3 {
        margin-top: 1.8rem;
    }

    .button-light {
        justify-self: start;
    }
}

@media (max-width: 600px) {
    .container {
        width: min(100% - 2rem, 74rem);
    }

    .site-header {
        position: relative;
    }

    .header-inner {
        min-height: 4.25rem;
        gap: 0.75rem;
    }

    .brand {
        gap: 0.55rem;
        font-size: 0.86rem;
    }

    .brand-mark {
        width: 1.75rem;
        height: 1.75rem;
        font-size: 0.76rem;
    }

    .header-cta {
        min-height: 2.4rem;
        padding-inline: 0.9rem;
        font-size: 0.78rem;
    }

    .hero {
        padding-top: 3.7rem;
    }

    .hero-grid {
        gap: 2.5rem;
    }

    .hero h1 {
        font-size: clamp(3rem, 15vw, 4.6rem);
        letter-spacing: -0.07em;
    }

    .hero-visual {
        margin-inline: -1rem;
    }

    .hero-visual img {
        aspect-ratio: 4 / 3;
        object-position: center;
    }

    .hero-caption {
        right: 0.9rem;
        bottom: 0.75rem;
    }

    .illustration-break {
        width: 100%;
        margin-bottom: 0;
    }

    .illustration-frame {
        aspect-ratio: 4 / 3;
    }

    .about-layout {
        gap: 3.5rem;
    }

    .street-portrait {
        width: calc(100% + 2rem);
        max-width: none;
        margin-inline: -1rem;
    }

    .street-portrait-frame {
        aspect-ratio: 4 / 3;
    }

    .street-portrait img {
        object-position: center 62%;
    }

    .program-visual {
        width: calc(100% + 2rem);
        margin-inline: -1rem;
    }

    .feature-row {
        grid-template-columns: 2.8rem 1fr;
        gap: 0.7rem 1rem;
        padding-block: 1.8rem 2rem;
    }

    .feature-row p {
        grid-column: 2;
    }

    .program-row {
        grid-template-columns: 2rem 1fr;
        gap: 0.55rem 0.8rem;
        align-items: baseline;
    }

    .program-row p,
    .program-status {
        grid-column: 2;
    }

    .sponsor-grid {
        gap: 3.5rem;
    }

    .receipt-note {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .cta-grid {
        gap: 2.5rem;
    }

    .button-light {
        width: 100%;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
    }
}