:root {
    --ivory: #fbf8f3;
    --paper: #f4eee5;
    --sand: #e8ded0;
    --line: #d8cab7;
    --taupe: #a68b6d;
    --brown: #6b4e37;
    --umber: #3e2c20;
    --ink: #2e2219;
    --text: #4a3b30;
    --muted: #8a7a6b;

    --serif: "Shippori Mincho", "Yu Mincho", "YuMincho", "Hiragino Mincho ProN", "Noto Serif JP", serif;
    --latin: "Cormorant Garamond", "Times New Roman", serif;

    --ease: cubic-bezier(0.22, 1, 0.36, 1);
    --header-h: 76px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-h);
}

body {
    margin: 0;
    font-family: var(--serif);
    font-weight: 400;
    font-size: 1rem;
    line-height: 2.1;
    letter-spacing: 0.08em;
    color: var(--text);
    background-color: var(--ivory);
    -webkit-font-smoothing: antialiased;
    font-feature-settings: "palt";
    line-break: strict;
}

.wb {
    display: inline-block;
}

a {
    color: inherit;
}

img {
    max-width: 100%;
    height: auto;
}

h1,
h2,
h3 {
    font-weight: 500;
    color: var(--ink);
    letter-spacing: 0.12em;
    line-height: 1.7;
    margin: 0;
}

p {
    margin: 0 0 1.4em;
}

.container {
    width: 100%;
    max-width: 67.5rem;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.container--narrow {
    max-width: 47.5rem;
}

/* ---------- Header ---------- */

.site-header {
    position: fixed;
    inset: 0 0 auto 0;
    z-index: 50;
    height: var(--header-h);
    display: flex;
    align-items: center;
    transition: background-color 0.6s var(--ease), box-shadow 0.6s var(--ease);
}

.site-header.is-scrolled {
    background-color: rgba(251, 248, 243, 0.92);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    box-shadow: 0 1px 0 var(--line);
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    max-width: none;
    padding: 0 2.5rem;
}

.brand {
    font-family: var(--latin);
    font-size: 1.5rem;
    letter-spacing: 0.14em;
    color: var(--ink);
    text-decoration: none;
    line-height: 1;
}

.global-nav ul {
    display: flex;
    gap: 2.25rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.global-nav a {
    display: block;
    text-decoration: none;
    font-size: 0.85rem;
    letter-spacing: 0.16em;
    line-height: 1.4;
    text-align: center;
    color: var(--text);
    transition: color 0.4s var(--ease);
}

.global-nav a span {
    display: block;
    font-family: var(--latin);
    font-style: italic;
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    color: var(--taupe);
}

.global-nav a:hover {
    color: var(--brown);
}

/* ---------- Hero ---------- */

.hero {
    position: relative;
    min-height: 100vh;
    min-height: 100svh;
    display: flex;
    align-items: center;
    padding: calc(var(--header-h) + 2.5rem) 0 10rem;
    background:
        radial-gradient(ellipse at 85% 20%, rgba(166, 139, 109, 0.14), transparent 55%),
        radial-gradient(ellipse at 10% 90%, rgba(107, 78, 55, 0.08), transparent 50%),
        var(--ivory);
    overflow: hidden;
}

.hero__watermark {
    position: absolute;
    right: -0.05em;
    bottom: -0.18em;
    font-family: var(--latin);
    font-size: clamp(6rem, 18vw, 16rem);
    font-style: italic;
    line-height: 1;
    letter-spacing: 0.02em;
    color: rgba(107, 78, 55, 0.06);
    pointer-events: none;
    user-select: none;
    white-space: nowrap;
}

.hero__inner {
    position: relative;
    width: 100%;
}

.hero__label {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.85rem;
    letter-spacing: 0.24em;
    color: var(--brown);
    margin-bottom: 2.5rem;
}

.hero__label::before {
    content: "";
    width: 48px;
    height: 1px;
    background: var(--taupe);
}

.hero__title {
    font-size: clamp(1.45rem, 2.9vw, 2.45rem);
    line-height: 1.9;
    letter-spacing: 0.12em;
    margin-bottom: 2.5rem;
}

.hero__title .line {
    display: block;
}

.hero__lead {
    max-width: 34em;
    font-size: 1rem;
    color: var(--text);
    margin-bottom: 3.5rem;
}

.scroll-down {
    position: absolute;
    left: 50%;
    bottom: 32px;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--latin);
    font-size: 0.8rem;
    letter-spacing: 0.3em;
    color: var(--muted);
    text-decoration: none;
}

.scroll-down::after {
    content: "";
    width: 1px;
    height: 64px;
    background: linear-gradient(var(--taupe), var(--taupe)) no-repeat top / 1px 0;
    background-color: var(--line);
    animation: scroll-line 2.4s var(--ease) infinite;
}

@keyframes scroll-line {
    0% { background-size: 1px 0; background-position: top; }
    50% { background-size: 1px 100%; background-position: top; }
    50.1% { background-position: bottom; }
    100% { background-size: 1px 0; background-position: bottom; }
}

/* ---------- Hero slideshow (image left, text right / text top, image bottom on SP) ---------- */

.hero.hero--split {
    display: grid;
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    grid-template-areas: "media text";
    align-items: center;
    padding: var(--header-h) 0 0;
}

.hero__media {
    grid-area: media;
    position: relative;
    align-self: stretch;
    min-height: 26rem;
    margin-bottom: 3rem;
    overflow: hidden;
    background-color: var(--sand);
}

.hero__slide {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    max-width: none;
    object-fit: cover;
    opacity: 0;
    filter: sepia(0.12) saturate(0.92);
    animation: hero-slide 21s linear infinite;
}

.hero__slide:nth-child(1) { object-position: 62% 50%; }
.hero__slide:nth-child(2) { object-position: 50% 50%; animation-delay: 7s; }
.hero__slide:nth-child(3) { object-position: 40% 50%; animation-delay: 14s; }

@keyframes hero-slide {
    0% { opacity: 0; transform: scale(1.08); }
    9% { opacity: 1; }
    33% { opacity: 1; }
    43% { opacity: 0; transform: scale(1); }
    100% { opacity: 0; transform: scale(1); }
}

.hero--split .hero__inner {
    grid-area: text;
    max-width: none;
    margin: 0;
    padding: 0.75rem 2.5rem 3rem 3.5rem;
}

.hero.hero--split .hero__label {
    margin-bottom: 1.25rem;
}

.hero.hero--split .hero__title {
    font-size: clamp(1.4rem, 2.4vw, 2.2rem);
    line-height: 1.65;
    margin-bottom: 1.25rem;
}

.hero.hero--split .hero__lead {
    font-size: 0.88rem;
    line-height: 1.9;
    margin-bottom: 1.75rem;
}

.hero.hero--split .btn {
    padding: 1.1rem 4.75rem 1.1rem 1.75rem;
}

.hero--split .hero__watermark {
    left: 50%;
    right: auto;
}

.hero--split .scroll-down {
    display: none;
}

@media (max-width: 900px) {
    .hero.hero--split {
        grid-template-columns: minmax(0, 1fr);
        grid-template-areas:
            "text"
            "media";
        min-height: 0;
        padding-bottom: 0;
    }

    .hero--split .hero__inner {
        padding: 2.5rem 1.5rem 3.5rem;
    }

    .hero__media {
        min-height: 0;
        aspect-ratio: 4 / 3;
        margin-bottom: 0;
    }

    .hero--split .hero__watermark {
        display: none;
    }
}

/* ---------- Buttons ---------- */

.btn {
    display: inline-flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
    position: relative;
    padding: 1.375rem 5.5rem 1.375rem 2.25rem;
    border: 1px solid var(--umber);
    background-color: var(--umber);
    color: var(--ivory);
    text-decoration: none;
    font-size: 1rem;
    letter-spacing: 0.12em;
    line-height: 1.6;
    overflow: hidden;
    transition: color 0.5s var(--ease), background-color 0.5s var(--ease);
}

.btn small {
    font-size: 0.78rem;
    letter-spacing: 0.1em;
    opacity: 0.8;
}

.btn::after {
    content: "";
    position: absolute;
    right: 32px;
    top: 50%;
    width: 32px;
    height: 1px;
    background: currentColor;
    transition: width 0.5s var(--ease);
}

.btn:hover {
    background-color: transparent;
    color: var(--umber);
}

.btn:hover::after {
    width: 44px;
}

.btn--light {
    border-color: var(--ivory);
    background-color: var(--ivory);
    color: var(--umber);
}

.btn--light:hover {
    background-color: transparent;
    color: var(--ivory);
}

/* ---------- Sections ---------- */

.section {
    padding: 8.75rem 0;
}

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

.section--sand {
    background-color: var(--sand);
}

.section-head {
    text-align: center;
    margin-bottom: 5rem;
}

.section-head__en {
    display: block;
    font-family: var(--latin);
    font-style: italic;
    font-size: 1.1rem;
    letter-spacing: 0.2em;
    color: var(--taupe);
    margin-bottom: 1rem;
}

.section-head__title {
    font-size: clamp(1.35rem, 2.6vw, 1.9rem);
    line-height: 1.9;
}

.section-head__rule {
    display: block;
    width: 1px;
    height: 56px;
    margin: 2rem auto 0;
    background-color: var(--taupe);
    transform-origin: top;
}

/* ---------- Seminar banner (shared with seminar_info.html) ---------- */

.seminar-banner {
    position: relative;
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: end;
    gap: 3rem;
    padding: 4rem 4rem 3.75rem;
    background-color: var(--umber);
    color: var(--sand);
}

.seminar-banner::before {
    content: "";
    position: absolute;
    inset: 12px;
    border: 1px solid rgba(232, 222, 208, 0.22);
    pointer-events: none;
}

.seminar-badge {
    display: inline-block;
    font-size: 0.8rem;
    letter-spacing: 0.22em;
    color: var(--umber);
    background-color: var(--sand);
    padding: 0.25rem 1rem;
    margin-bottom: 1.75rem;
}

.seminar-title {
    font-size: clamp(1.2rem, 2.2vw, 1.55rem);
    line-height: 1.9;
    color: var(--ivory);
    margin-bottom: 1.75rem;
}

.seminar-details {
    font-size: 0.92rem;
    line-height: 2.1;
    margin: 0;
    color: var(--sand);
}

.seminar-details strong {
    font-weight: 500;
    color: var(--ivory);
}

.btn-seminar {
    position: relative;
    display: inline-block;
    padding: 1.125rem 4.75rem 1.125rem 2rem;
    border: 1px solid var(--sand);
    color: var(--ivory);
    text-decoration: none;
    font-size: 0.92rem;
    letter-spacing: 0.12em;
    white-space: nowrap;
    transition: background-color 0.5s var(--ease), color 0.5s var(--ease);
}

.btn-seminar::after {
    content: "";
    position: absolute;
    right: 28px;
    top: 50%;
    width: 28px;
    height: 1px;
    background: currentColor;
    transition: width 0.5s var(--ease);
}

.btn-seminar:hover {
    background-color: var(--sand);
    color: var(--umber);
}

.btn-seminar:hover::after {
    width: 38px;
}

/* ---------- Concerns ---------- */

.concern-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1px;
    background-color: var(--line);
    border: 1px solid var(--line);
    margin: 0;
    padding: 0;
    list-style: none;
}

.concern {
    background-color: var(--ivory);
    padding: 3.5rem 3rem;
}

.concern__num {
    display: block;
    font-family: var(--latin);
    font-style: italic;
    font-size: 2.2rem;
    line-height: 1;
    color: var(--taupe);
    margin-bottom: 1.5rem;
}

.concern h3 {
    font-size: 1.15rem;
    margin-bottom: 1.125rem;
}

.concern p {
    font-size: 0.92rem;
    color: var(--text);
    margin: 0;
}

/* ---------- Solution ---------- */

.solution {
    margin: 0 auto;
    padding: 0;
    text-align: center;
}

.solution p {
    font-size: 1.02rem;
    line-height: 2.4;
}

.solution strong {
    font-weight: 500;
    color: var(--ink);
    background: linear-gradient(transparent 68%, rgba(166, 139, 109, 0.28) 68%);
}

/* ---------- Plan ---------- */

.plan {
    max-width: 42.5rem;
    margin: 0 auto;
    padding: 4.5rem 4rem;
    background-color: var(--ivory);
    border: 1px solid var(--line);
    outline: 1px solid var(--line);
    outline-offset: 8px;
    text-align: center;
}

.plan__name {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
}

.plan__price {
    font-family: var(--latin);
    font-size: clamp(2.8rem, 6vw, 4rem);
    line-height: 1.2;
    letter-spacing: 0.04em;
    color: var(--umber);
    margin-bottom: 3rem;
}

.plan__price span {
    font-family: var(--serif);
    font-size: 0.95rem;
    letter-spacing: 0.1em;
    color: var(--text);
    margin-left: 8px;
}

.plan__list {
    margin: 0;
    padding: 0;
    list-style: none;
    text-align: left;
    border-top: 1px solid var(--line);
}

.plan__list li {
    padding: 1.375rem 0 1.375rem 2rem;
    border-bottom: 1px solid var(--line);
    font-size: 0.92rem;
    position: relative;
}

.plan__list li::before {
    content: "";
    position: absolute;
    left: 4px;
    top: 2.25rem;
    width: 12px;
    height: 1px;
    background-color: var(--taupe);
}

.plan__list strong {
    display: block;
    font-weight: 500;
    color: var(--ink);
}

.scope-notes {
    max-width: 42.5rem;
    margin: 3.5rem auto 0;
    font-size: 0.85rem;
    line-height: 2;
    color: var(--muted);
}

.scope-notes strong {
    font-weight: 500;
    color: var(--text);
}

/* ---------- Benefits ---------- */

.benefit-lead {
    max-width: 47.5rem;
    margin: 0 auto 4.5rem;
    font-size: 0.98rem;
}

.benefit-lead strong {
    font-weight: 500;
    color: var(--ink);
}

.benefit-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2.5rem;
}

.benefit {
    background-color: var(--ivory);
    padding: 3.5rem 3rem;
}

.benefit__badge {
    display: inline-block;
    font-size: 0.78rem;
    letter-spacing: 0.16em;
    color: var(--brown);
    border-bottom: 1px solid var(--taupe);
    padding-bottom: 4px;
    margin-bottom: 1.75rem;
}

.benefit h3 {
    font-size: 1.12rem;
    line-height: 1.9;
    margin-bottom: 1.5rem;
}

.benefit p {
    font-size: 0.9rem;
    margin: 0;
}

/* ---------- CTA ---------- */

.cta {
    position: relative;
    padding: 10rem 0;
    background-color: var(--umber);
    color: var(--sand);
    text-align: center;
    overflow: hidden;
}

.cta .section-head__en {
    color: var(--taupe);
}

.cta .section-head__title {
    color: var(--ivory);
}

.cta .section-head__rule {
    background-color: var(--taupe);
}

.cta__lead {
    font-size: 1.05rem;
    margin-bottom: 3.5rem;
}

/* ---------- Seminar page ---------- */

.page-hero {
    padding: calc(var(--header-h) + 6.25rem) 0 2.5rem;
    text-align: center;
}

.page-hero__title {
    font-size: clamp(1.5rem, 3vw, 2.2rem);
}

.seminar-slot {
    padding: 2.5rem 0 7.5rem;
}

.seminar-slot__loading {
    text-align: center;
    color: var(--muted);
    padding: 2.5rem 0;
    margin: 0;
}

.seminar-slot__error {
    text-align: center;
    color: var(--brown);
    padding: 2.5rem 0;
    margin: 0;
}

.form-box {
    max-width: 42.5rem;
    margin: 0 auto;
    padding: 4.5rem 4rem;
    background-color: var(--ivory);
    border: 1px solid var(--line);
}

.form-group {
    margin-bottom: 2.25rem;
}

.form-group label {
    display: block;
    font-size: 0.92rem;
    color: var(--ink);
    margin-bottom: 0.625rem;
}

.required {
    display: inline-block;
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    line-height: 1.6;
    color: var(--ivory);
    background-color: var(--brown);
    padding: 0 0.5rem;
    margin-left: 10px;
    vertical-align: 0.15em;
}

.form-control {
    width: 100%;
    padding: 0.875rem 0.25rem;
    font-family: inherit;
    font-size: 1rem;
    letter-spacing: 0.06em;
    color: var(--ink);
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--line);
    border-radius: 0;
    transition: border-color 0.4s var(--ease);
}

.form-control::placeholder {
    color: #b5a796;
}

.form-control:focus {
    outline: none;
    border-bottom-color: var(--brown);
}

.consent-box {
    padding: 2rem;
    background-color: var(--paper);
    margin: 3rem 0 2.5rem;
}

.consent-box__title {
    font-size: 0.92rem;
    color: var(--ink);
    margin: 0 0 1rem;
}

.checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    font-size: 0.85rem;
    line-height: 1.9;
    margin-bottom: 0.875rem;
    cursor: pointer;
}

.checkbox-group:last-child {
    margin-bottom: 0;
}

.checkbox-group input {
    flex: none;
    margin-top: 0.5em;
    accent-color: var(--brown);
}

.checkbox-group a {
    color: var(--brown);
}

.btn-submit {
    display: block;
    width: 100%;
    padding: 1.375rem;
    font-family: inherit;
    font-size: 1rem;
    letter-spacing: 0.14em;
    color: var(--ivory);
    background-color: var(--umber);
    border: 1px solid var(--umber);
    cursor: pointer;
    transition: background-color 0.5s var(--ease), color 0.5s var(--ease);
}

.btn-submit:hover {
    background-color: transparent;
    color: var(--umber);
}

.form-note {
    text-align: center;
    font-size: 0.8rem;
    color: var(--muted);
    margin: 1.5rem 0 0;
}

/* ---------- Footer ---------- */

.site-footer {
    padding: 4.5rem 0 3rem;
    background-color: var(--ink);
    color: var(--muted);
    text-align: center;
}

.site-footer .brand {
    display: inline-block;
    color: var(--sand);
    margin-bottom: 2rem;
}

.site-footer small {
    display: block;
    font-family: var(--latin);
    font-size: 0.85rem;
    letter-spacing: 0.12em;
}

/* ---------- Full-screen sections (top page, PC) ---------- */

@media (min-width: 1024px) and (min-height: 640px) {
    html.is-snap {
        --header-h: 88px;
        font-size: clamp(17px, 2.85vh, 24px);
        scroll-snap-type: y mandatory;
        scroll-padding-top: 0;
    }

    .is-snap .hero.hero--split {
        padding: var(--header-h) 0 0;
    }

    .is-snap .hero__label {
        margin-bottom: 1rem;
    }

    .is-snap .hero__lead {
        margin-bottom: 1.75rem;
    }

    .is-snap body {
        line-height: 1.95;
    }

    .is-snap .hero,
    .is-snap .section,
    .is-snap .snap-last {
        scroll-snap-align: start;
        min-height: 100vh;
        min-height: 100svh;
    }

    .is-snap .section {
        display: flex;
        align-items: center;
        padding: calc(var(--header-h) + 0.5rem) 0 1.5rem;
    }

    .is-snap .section > .container {
        width: 100%;
    }

    .is-snap .section-head {
        margin-bottom: 1.75rem;
    }

    .is-snap .section-head__en {
        line-height: 1.4;
        margin-bottom: 0.5rem;
    }

    .is-snap .section-head__rule {
        width: 3rem;
        height: 1px;
        margin-top: 1.25rem;
        transform-origin: center;
    }

    .is-snap .section-head__rule.reveal-rule {
        transform: scaleX(0);
    }

    .is-snap .section-head__rule.reveal-rule.is-visible {
        transform: scaleX(1);
    }

    .is-snap .section-head__title {
        font-size: clamp(1.25rem, 3vw, 1.6rem);
        line-height: 1.65;
    }

    /* Seminar */
    .is-snap .seminar-banner {
        grid-template-columns: 1fr auto;
        align-items: end;
        padding: 2.25rem 3rem;
    }

    .is-snap .seminar-badge {
        margin-bottom: 1.25rem;
    }

    .is-snap .seminar-title {
        font-size: 1.3rem;
        margin-bottom: 1.25rem;
    }

    .is-snap .seminar-details {
        font-size: 0.85rem;
        line-height: 1.95;
    }

    /* Concern */
    .is-snap .concern-list {
        grid-template-columns: repeat(4, 1fr);
    }

    .is-snap .concern {
        padding: 1.75rem 1.5rem;
    }

    .is-snap .concern__num {
        font-size: 1.8rem;
        margin-bottom: 1rem;
    }

    .is-snap .concern h3 {
        font-size: 0.95rem;
        margin-bottom: 0.75rem;
    }

    .is-snap .concern p {
        font-size: 0.8rem;
        line-height: 1.95;
    }

    /* Solution */
    .is-snap .solution p {
        line-height: 2.1;
        margin-bottom: 1.1em;
    }

    /* Split layout: heading + note on the left, main content on the right */
    .is-snap .section--split > .container {
        display: grid;
        grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.65fr);
        grid-template-areas:
            "head main"
            "note main";
        grid-template-rows: auto 1fr;
        column-gap: 4rem;
        align-items: center;
    }

    .is-snap .section--split .section-head {
        grid-area: head;
        align-self: end;
        text-align: left;
        margin-bottom: 1.5rem;
    }

    .is-snap .section--split .section-head__title {
        font-size: 1.4rem;
    }

    .is-snap .section--split .section-head__rule {
        margin-left: 0;
        transform-origin: left;
    }

    .is-snap .section--split .plan,
    .is-snap .section--split .benefit-grid {
        grid-area: main;
    }

    .is-snap .section--split .scope-notes,
    .is-snap .section--split .benefit-lead {
        grid-area: note;
        align-self: start;
        max-width: none;
        margin: 0;
        font-size: 0.75rem;
        line-height: 1.95;
    }

    /* Service & Price */
    .is-snap .plan {
        max-width: none;
        padding: 2.25rem 2.75rem;
        text-align: left;
    }

    .is-snap .plan__summary {
        display: flex;
        align-items: baseline;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 0 1.5rem;
        margin-bottom: 1.25rem;
    }

    .is-snap .plan__name {
        margin: 0;
    }

    .is-snap .plan__price {
        font-size: clamp(2.2rem, 5vw, 3rem);
        margin: 0;
    }

    .is-snap .plan__list li {
        padding: 0.8rem 0 0.8rem 2rem;
        font-size: 0.85rem;
        line-height: 1.8;
    }

    .is-snap .plan__list li::before {
        top: 1.55rem;
    }

    /* Privilege */
    .is-snap .benefit-grid {
        gap: 1.25rem;
    }

    .is-snap .benefit {
        padding: 1.75rem 1.75rem;
    }

    .is-snap .benefit__badge {
        margin-bottom: 0.9rem;
    }

    .is-snap .benefit h3 {
        font-size: 0.95rem;
        line-height: 1.75;
        margin-bottom: 0.75rem;
    }

    .is-snap .benefit p {
        font-size: 0.75rem;
        line-height: 1.95;
    }

    /* Contact + footer */
    .is-snap .snap-last {
        display: flex;
        flex-direction: column;
    }

    .is-snap .cta {
        flex: 1;
        display: flex;
        align-items: center;
        padding: var(--header-h) 0 2rem;
    }

    .is-snap .cta__lead {
        margin-bottom: 2rem;
    }

    .is-snap .cta > .container {
        width: 100%;
    }

    .is-snap .site-footer {
        padding: 1.75rem 0 1.5rem;
    }

    .is-snap .site-footer .brand {
        margin-bottom: 0.75rem;
    }
}

/* ---------- Scroll reveal ---------- */

.js .reveal {
    opacity: 0;
    transform: translateY(32px);
    filter: blur(6px);
    transition:
        opacity 1.4s var(--ease),
        transform 1.4s var(--ease),
        filter 1.4s var(--ease);
    transition-delay: var(--delay, 0s);
}

.js .reveal.is-visible {
    opacity: 1;
    transform: none;
    filter: none;
}

.js .reveal-mask {
    display: block;
    overflow: hidden;
}

.js .reveal-mask > span {
    display: block;
    transform: translateY(105%);
    transition: transform 1.6s var(--ease);
    transition-delay: var(--delay, 0s);
}

.js .reveal-mask.is-visible > span {
    transform: none;
}

.js .reveal-rule {
    transform: scaleY(0);
    transition: transform 1.2s var(--ease) 0.3s;
}

.js .reveal-rule.is-visible {
    transform: scaleY(1);
}

.js .reveal-fade {
    opacity: 0;
    transition: opacity 2s var(--ease);
    transition-delay: var(--delay, 0s);
}

.js .reveal-fade.is-visible {
    opacity: 1;
}

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

    .js .reveal,
    .js .reveal-mask > span,
    .js .reveal-rule,
    .js .reveal-fade {
        opacity: 1;
        transform: none;
        filter: none;
        transition: none;
    }

    .scroll-down::after {
        animation: none;
        background-size: 1px 100%;
    }

    .hero__slide {
        animation: none;
    }

    .hero__slide:first-child {
        opacity: 1;
    }
}

/* ---------- Responsive ---------- */

@media (min-width: 1024px) {
    :root {
        --header-h: 104px;
    }

    html {
        font-size: 150%;
    }

    .hero {
        padding: calc(var(--header-h) + 1rem) 0 6.5rem;
    }

    .hero__label {
        margin-bottom: 1.5rem;
    }

    .hero__title {
        font-size: clamp(2.2rem, 3.8vw, 3.6rem);
        line-height: 1.75;
        letter-spacing: 0.08em;
        margin-bottom: 1.75rem;
    }

    .hero__lead {
        margin-bottom: 2.25rem;
    }

    .scroll-down {
        bottom: 1rem;
    }

    .scroll-down::after {
        height: 48px;
    }

    .section-head__title {
        font-size: clamp(1.35rem, 3.6vw, 1.9rem);
    }

    .seminar-title {
        font-size: clamp(1.2rem, 3vw, 1.55rem);
    }

    .page-hero__title {
        font-size: clamp(1.5rem, 4.4vw, 2.2rem);
    }

    .plan__price {
        font-size: clamp(2.8rem, 8.5vw, 4rem);
    }

    .global-nav ul {
        gap: 1.75rem;
    }

    .seminar-banner {
        grid-template-columns: 1fr;
        align-items: start;
        gap: 2.5rem;
    }
}

@media (max-width: 900px) {
    .global-nav {
        display: none;
    }

    .site-header__inner {
        padding: 0 1.5rem;
    }

    .seminar-banner {
        grid-template-columns: 1fr;
        align-items: start;
        padding: 3rem 2rem;
        gap: 2rem;
    }

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

@media (max-width: 640px) {
    :root {
        --header-h: 64px;
    }

    body {
        font-size: 0.9375rem;
        letter-spacing: 0.06em;
    }

    .section {
        padding: 6rem 0;
    }

    .section-head {
        margin-bottom: 3.5rem;
    }

    .hero__title {
        letter-spacing: 0.08em;
    }

    .seminar-badge {
        letter-spacing: 0.12em;
    }

    .concern-list {
        grid-template-columns: 1fr;
    }

    .concern,
    .benefit {
        padding: 2.75rem 1.75rem;
    }

    .plan,
    .form-box {
        padding: 3.25rem 1.5rem;
    }

    .plan {
        outline-offset: 5px;
    }

    .btn,
    .btn-seminar {
        width: 100%;
        white-space: normal;
    }

    .cta {
        padding: 7rem 0;
    }
}