@charset 'UTF-8';
@import url('https://fonts.googleapis.com/css2?family=Zen+Kaku+Gothic+New:wght@400;500;700;900&display=swap');

:root {
    --ink: #1a1a1a;
    --paper: #faf8f3;
    --paper-2: #f3efe6;
    --paper-3: #ebe5d6;
    --accent: #e85d4e;
    --accent-soft: #f5b8a8;
    --yellow: #f4c542;
    --blue: #4a6fa5;
    --green: #6b8e5a;
    --line: #2a2a2a;
    --muted: #6b6657;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Zen Kaku Gothic New', sans-serif;
    background: var(--paper);
    color: var(--ink);
    line-height: 1.8;
    font-weight: 400;
    overflow-x: hidden;
}

/* paper grain background */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image:
        radial-gradient(circle at 20% 30%, rgba(0, 0, 0, 0.015) 1px, transparent 1px),
        radial-gradient(circle at 70% 60%, rgba(0, 0, 0, 0.015) 1px, transparent 1px);
    background-size: 3px 3px, 5px 5px;
    pointer-events: none;
    z-index: 1;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 32px;
    position: relative;
    z-index: 2;
}

/* ========== HEADER ========== */
header {
    position: sticky;
    top: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--ink);
    z-index: 100;
    padding: 28px 32px;
}

.header-inner {
    max-width: 1280px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--ink);
    flex-shrink: 0;
}

.logo-img {
    width: 80px;
    height: 80px;
    border-radius: 6px;
    display: block;
}

.logo-text {
    font-family: 'Zen Kaku Gothic New', sans-serif;
    font-size: 17px;
    font-weight: 700;
    letter-spacing: 0.04em;
}

nav {
    display: flex;
    align-items: center;
    gap: 20px;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 24px;
    align-items: center;
}

nav a {
    color: var(--ink);
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    transition: opacity 0.2s;
}

nav a:hover {
    opacity: 0.5;
}

/* SNS icons */
.sns-list {
    display: flex;
    gap: 6px;
    align-items: center;
    padding: 0 8px;
    border-left: 1px solid rgba(26, 26, 26, 0.2);
    border-right: 1px solid rgba(26, 26, 26, 0.2);
    margin: 0 4px;
}

.sns-link {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--ink);
    text-decoration: none;
    transition: all 0.2s;
}

.sns-link:hover {
    background: var(--ink);
    color: var(--paper);
    transform: translateY(-1px);
}

.sns-link svg {
    width: 16px;
    height: 16px;
    fill: currentColor;
}

.nav-cta {
    display: flex;
    gap: 8px;
}

.btn-ghost,
.btn-fill {
    padding: 9px 18px;
    font-size: 12px;
    font-weight: 600;
    border-radius: 999px;
    text-decoration: none;
    transition: all 0.2s;
    white-space: nowrap;
}

.btn-ghost {
    border: 1px solid var(--ink);
    color: var(--ink);
    background: transparent;
}

.btn-ghost:hover {
    background: var(--ink);
    color: var(--paper);
}

.btn-fill {
    background: var(--ink);
    color: var(--paper);
    border: 1px solid var(--ink);
}

.btn-fill:hover {
    background: var(--accent);
    border-color: var(--accent);
}

/* ========== HERO ========== */
.hero {
    padding: 80px 32px 100px;
    position: relative;
    overflow: hidden;
    height: 80vw;
    max-height: 900px;
    display: flex;
    align-items: center;
}

.hero-inner {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-text {
    position: relative;
    z-index: 3;
}

.hero-title {
    font-family: 'Zen Kaku Gothic New', sans-serif;
    font-size: clamp(48px, 6vw, 78px);
    font-weight: 900;
    line-height: 1.25;
    letter-spacing: -0.01em;
    margin-bottom: 32px;
    position: relative;
}

.hero-title .hen {
    position: relative;
    display: inline-block;
}

.hero-title .hen::after {
    content: '';
    position: absolute;
    left: -8px;
    right: -8px;
    bottom: 8px;
    height: 14px;
    background: var(--yellow);
    z-index: -1;
    opacity: 0.7;
    transform: skewX(-6deg);
}

.hero-sub {
    font-size: 16px;
    color: var(--muted);
    margin-bottom: 40px;
    letter-spacing: 0.04em;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.btn-primary {
    padding: 16px 32px;
    background: var(--ink);
    color: var(--paper);
    border: 1.5px solid var(--ink);
    border-radius: 999px;
    font-size: 14px;
    font-weight: 700;
    text-decoration: none;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.btn-primary:hover {
    background: var(--accent);
    border-color: var(--accent);
    transform: translateY(-2px);
}

.btn-secondary {
    padding: 16px 32px;
    background: transparent;
    color: var(--ink);
    border: 1.5px solid var(--ink);
    border-radius: 999px;
    font-size: 14px;
    font-weight: 700;
    text-decoration: none;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.btn-secondary:hover {
    background: var(--ink);
    color: var(--paper);
}

.btn-arrow {
    display: inline-block;
    transition: transform 0.2s;
}

.btn-primary:hover .btn-arrow,
.btn-secondary:hover .btn-arrow {
    transform: translateX(4px);
}

/* hero illustration */
.hero-art {
    position: relative;
    aspect-ratio: 1 / 1;
    max-width: 480px;
    margin-left: auto;
}

.hero-art svg {
    width: 100%;
    height: 100%;
}

/* scroll indicator */
.scroll-indicator {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    font-family: 'Poppins', sans-serif;
    font-size: 10px;
    font-weight: 500;
    letter-spacing: 0.3em;
    color: var(--muted);
    writing-mode: vertical-rl;
    text-orientation: mixed;
}

.scroll-indicator::after {
    content: '';
    display: block;
    width: 1px;
    height: 40px;
    background: var(--ink);
    margin: 12px auto 0;
    animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {

    0%,
    100% {
        transform: scaleY(1);
        transform-origin: top;
    }

    50% {
        transform: scaleY(0.3);
        transform-origin: top;
    }
}

/* ========== SECTION COMMON ========== */
section {
    padding: 100px 32px;
    position: relative;
}

.section-label {
    font-family: 'Poppins', sans-serif;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.3em;
    text-align: center;
    color: var(--muted);
    margin-bottom: 14px;
    text-transform: uppercase;
}

.section-title {
    font-family: 'Zen Kaku Gothic New', sans-serif;
    font-size: clamp(26px, 3.2vw, 36px);
    font-weight: 900;
    text-align: center;
    margin-bottom: 60px;
    line-height: 1.4;
    letter-spacing: 0.02em;
}

.section-title .accent-line {
    background: linear-gradient(transparent 65%, var(--accent-soft) 65%);
    padding: 0 4px;
}

/* ========== THEME (開催テーマ) ========== */
.theme {
    background: var(--paper);
    border-top: 1px solid var(--ink);
    border-bottom: 1px solid var(--ink);
    padding: 100px 0;
}

.theme .container {
    padding-left: 32px;
    padding-right: 32px;
}

/* Swiper container */
.theme-swiper {
    width: 100%;
    padding: 16px 0 56px;
    overflow: visible;
    /* let cards overflow vertically (badge stickout) */
}

.theme-swiper-outer {
    position: relative;
    overflow-x: clip;
    overflow-y: visible;
}

/* Swiper internals override */
.theme-swiper .swiper-wrapper {
    align-items: stretch;
}

.theme-swiper .swiper-slide {
    height: auto;
}

.theme-swiper .swiper-slide>.theme-card {
    width: 100%;
}

/* right edge fade hint */
.theme-swiper-outer::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    bottom: 56px;
    width: 80px;
    background: linear-gradient(to right, transparent, var(--paper));
    pointer-events: none;
    z-index: 3;
}

/* pagination & navigation */
.theme-swiper .swiper-pagination {
    bottom: 16px !important;
}

.theme-swiper .swiper-pagination-bullet {
    width: 8px;
    height: 8px;
    background: var(--ink);
    opacity: 0.25;
    transition: all 0.2s;
}

.theme-swiper .swiper-pagination-bullet-active {
    background: var(--accent);
    opacity: 1;
    width: 24px;
    border-radius: 4px;
}

.theme-nav {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin-top: 24px;
    position: relative;
    z-index: 4;
}

.theme-nav-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 1.5px solid var(--ink);
    background: var(--paper);
    color: var(--ink);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.25s;
    padding: 0;
    font-family: inherit;
}

.theme-nav-btn:hover {
    background: var(--ink);
    color: var(--paper);
}

.theme-nav-btn.swiper-button-disabled {
    opacity: 0.3;
    cursor: not-allowed;
    pointer-events: none;
}

.theme-nav-btn svg {
    width: 16px;
    height: 16px;
    stroke: currentColor;
    fill: none;
    stroke-width: 2;
}

.theme-card {
    background: var(--paper-2);
    border: 1px solid var(--ink);
    border-radius: 4px;
    aspect-ratio: 3 / 4;
    padding: 24px 20px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
    transition: transform 0.3s, box-shadow 0.3s;
    cursor: pointer;
}

.theme-card:hover {
    transform: translateY(-4px);
    box-shadow: 6px 6px 0 var(--ink);
}

.theme-badge {
    position: absolute;
    top: -12px;
    right: -12px;
    width: 68px;
    height: 68px;
    background: var(--accent);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 700;
    font-family: 'Zen Kaku Gothic New', sans-serif;
    transform: rotate(-8deg);
    z-index: 2;
    box-shadow: 0 4px 0 rgba(0, 0, 0, 0.1);
}

.theme-badge.closed {
    background: var(--paper-3);
    color: var(--muted);
}

.theme-badge.upcoming {
    background: var(--blue);
    color: white;
}

.theme-card-num {
    font-family: 'Poppins', sans-serif;
    font-size: 14px;
    color: var(--muted);
    letter-spacing: 0.2em;
}

.theme-card-visual {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 16px 0;
}

.theme-card-visual svg {
    width: 60%;
    height: auto;
}

.theme-card-title {
    font-family: 'Zen Kaku Gothic New', sans-serif;
    font-weight: 600;
    font-size: 15px;
    line-height: 1.6;
    margin-bottom: 12px;
}

.theme-card-desc {
    font-size: 12px;
    color: var(--muted);
    line-height: 1.7;
}

.theme-card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px dashed var(--ink);
    font-size: 11px;
    color: var(--muted);
}

/* ========== ABOUT ========== */
.about {
    background: var(--paper-2);
}

.about-inner {
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
    align-items: start;
}

.about-label {
    font-family: 'Poppins', sans-serif;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.3em;
    color: var(--muted);
    margin-bottom: 16px;
}

.about-title {
    font-family: 'Zen Kaku Gothic New', sans-serif;
    font-size: clamp(26px, 3vw, 34px);
    font-weight: 900;
    line-height: 1.5;
    letter-spacing: 0.01em;
}

.about-title .underline {
    border-bottom: 2px solid var(--ink);
    padding-bottom: 4px;
}

.about-text {
    font-size: 15px;
    line-height: 2.2;
    letter-spacing: 0.05em;
}

.about-text p {
    margin-bottom: 24px;
}

/* video */
.video-wrap {
    max-width: 800px;
    margin: 60px auto 0;
    aspect-ratio: 16 / 9;
    background: var(--paper-3);
    border: 1px solid var(--ink);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    cursor: pointer;
    overflow: hidden;
    transition: transform 0.3s;
}

.video-wrap:hover {
    transform: scale(1.01);
}

.video-wrap::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(45deg, transparent 48%, rgba(0, 0, 0, 0.04) 48%, rgba(0, 0, 0, 0.04) 52%, transparent 52%);
    background-size: 16px 16px;
}

.play-btn {
    width: 72px;
    height: 72px;
    border: 2px solid var(--ink);
    background: var(--paper);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
    transition: transform 0.3s;
}

.video-wrap:hover .play-btn {
    transform: scale(1.1);
    background: var(--accent);
    border-color: var(--accent);
}

.video-wrap:hover .play-btn svg {
    stroke: white;
    fill: white;
}

.play-btn svg {
    transition: all 0.3s;
}

.video-caption {
    position: absolute;
    bottom: 16px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 11px;
    color: var(--muted);
    letter-spacing: 0.1em;
    z-index: 2;
}

/* ========== FEATURES ========== */
.features {
    background: var(--paper);
}

.features-grid {
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    background: var(--paper);
    border: 1px solid var(--ink);
    border-radius: 4px;
    padding: 36px 28px;
    position: relative;
    transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 6px 6px 0 var(--ink);
}

.feature-num {
    font-family: 'Poppins', sans-serif;
    font-size: 14px;
    color: var(--accent);
    letter-spacing: 0.2em;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.feature-num::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--ink);
}

.feature-icon {
    width: 56px;
    height: 56px;
    margin-bottom: 20px;
}

.feature-title {
    font-family: 'Zen Kaku Gothic New', sans-serif;
    font-weight: 700;
    font-size: 17px;
    line-height: 1.6;
    margin-bottom: 12px;
}

.feature-desc {
    font-size: 13px;
    color: var(--muted);
    line-height: 1.9;
}

/* ========== FOR WHOM ========== */
.forwhom {
    background: var(--paper-2);
}

.forwhom-grid {
    max-width: 1000px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.person-card {
    background: var(--paper);
    border: 1px solid var(--ink);
    border-radius: 4px;
    padding: 32px 24px;
    text-align: center;
    transition: all 0.3s;
}

.person-card:hover {
    background: var(--ink);
    color: var(--paper);
}

.person-card:hover .person-num {
    color: var(--yellow);
}

.person-card:hover .person-desc {
    color: var(--paper-3);
}

.person-num {
    font-family: 'Poppins', sans-serif;
    font-size: 13px;
    color: var(--accent);
    letter-spacing: 0.2em;
    margin-bottom: 16px;
    transition: color 0.3s;
}

.person-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 16px;
}

.person-title {
    font-family: 'Zen Kaku Gothic New', sans-serif;
    font-weight: 700;
    font-size: 15px;
    margin-bottom: 12px;
}

.person-desc {
    font-size: 12px;
    line-height: 1.9;
    color: var(--muted);
    text-align: left;
    transition: color 0.3s;
}

/* ========== INSTRUCTOR ========== */
.instructor {
    background: var(--paper);
}

.instructor-card {
    max-width: 900px;
    margin: 0 auto;
    background: var(--paper-2);
    border: 1px solid var(--ink);
    border-radius: 4px;
    padding: 48px;
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 40px;
    align-items: start;
}

.instructor-portrait {
    aspect-ratio: 3 / 4;
    background: var(--paper);
    border: 1px solid var(--ink);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.instructor-portrait svg {
    width: 100%;
    height: 100%;
}

.instructor-name-block {
    display: flex;
    align-items: baseline;
    gap: 20px;
    margin-bottom: 8px;
}

.instructor-name {
    font-family: 'Zen Kaku Gothic New', sans-serif;
    font-size: 28px;
    font-weight: 700;
}

.instructor-role {
    font-size: 12px;
    color: var(--muted);
    letter-spacing: 0.1em;
}

.instructor-bio {
    font-size: 13px;
    line-height: 2;
    color: var(--ink);
    margin-top: 16px;
}

.instructor-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 20px;
    font-size: 12px;
    color: var(--ink);
    text-decoration: none;
    border-bottom: 1px solid var(--ink);
    padding-bottom: 2px;
    transition: all 0.2s;
}

.instructor-link:hover {
    color: var(--accent);
    border-color: var(--accent);
}

.organizer-note {
    max-width: 900px;
    margin: 32px auto 0;
    padding: 24px 28px;
    background: transparent;
    border-left: 2px solid var(--ink);
    font-size: 13px;
    line-height: 2;
    color: var(--muted);
}

.organizer-label {
    font-family: 'Poppins', sans-serif;
    font-size: 11px;
    letter-spacing: 0.3em;
    color: var(--ink);
    margin-bottom: 8px;
}

/* ========== FLOW ========== */
.flow {
    background: var(--paper-2);
}

.flow-inner {
    max-width: 1000px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 32px;
}

.flow-steps {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.flow-step {
    background: var(--paper);
    border: 1px solid var(--ink);
    border-radius: 4px;
    padding: 20px 24px;
    display: flex;
    align-items: center;
    gap: 16px;
    cursor: pointer;
    transition: all 0.2s;
}

.flow-step.active {
    background: var(--ink);
    color: var(--paper);
}

.flow-step-num {
    font-family: 'Poppins', sans-serif;
    font-size: 11px;
    letter-spacing: 0.2em;
    opacity: 0.7;
}

.flow-step-title {
    font-family: 'Zen Kaku Gothic New', sans-serif;
    font-weight: 700;
    font-size: 15px;
}

.flow-detail {
    background: var(--paper);
    border: 1px solid var(--ink);
    border-radius: 4px;
    padding: 40px;
    min-height: 280px;
}

.flow-detail-label {
    font-family: 'Poppins', sans-serif;
    font-size: 12px;
    letter-spacing: 0.3em;
    color: var(--accent);
    margin-bottom: 12px;
}

.flow-detail-title {
    font-family: 'Zen Kaku Gothic New', sans-serif;
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 20px;
}

.flow-detail-text {
    font-size: 14px;
    line-height: 2;
    color: var(--ink);
    margin-bottom: 24px;
}

.flow-detail-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 24px;
    background: var(--ink);
    color: var(--paper);
    text-decoration: none;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 600;
    transition: all 0.2s;
}

.flow-detail-btn:hover {
    background: var(--accent);
}

/* ========== FAQ ========== */
.faq {
    background: var(--paper);
}

.faq-inner {
    max-width: 880px;
    margin: 0 auto;
}

.faq-category {
    font-family: 'Zen Kaku Gothic New', sans-serif;
    font-size: 18px;
    font-weight: 700;
    margin: 40px 0 16px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--ink);
}

.faq-category:first-of-type {
    margin-top: 0;
}

.faq-item {
    border-bottom: 1px dashed var(--ink);
}

.faq-question {
    padding: 20px 0;
    display: flex;
    align-items: flex-start;
    gap: 16px;
    cursor: pointer;
    transition: opacity 0.2s;
}

.faq-question:hover {
    opacity: 0.7;
}

.faq-q-mark {
    font-family: 'Poppins', sans-serif;
    font-size: 22px;
    font-weight: 700;
    color: var(--accent);
    flex-shrink: 0;
    width: 28px;
    line-height: 1;
}

.faq-q-text {
    flex: 1;
    font-size: 14px;
    line-height: 1.7;
    font-weight: 500;
}

.faq-toggle {
    width: 28px;
    height: 28px;
    border: 1px solid var(--ink);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all 0.3s;
}

.faq-item.open .faq-toggle {
    background: var(--ink);
    color: var(--paper);
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding-left: 0;
}

.faq-item.open .faq-answer {
    max-height: 400px;
    padding: 0 0 24px 0;
}

.faq-a-mark {
    font-family: 'Poppins', sans-serif;
    font-size: 22px;
    font-weight: 700;
    color: var(--ink);
    width: 28px;
    flex-shrink: 0;
    line-height: 1;
}

.faq-a-text {
    flex: 1;
    font-size: 13px;
    line-height: 1.9;
    color: var(--muted);
}

/* ========== REGISTRATION ========== */
.registration {
    background: var(--paper-2);
    position: relative;
    overflow: hidden;
}

.registration::before {
    content: '';
    position: absolute;
    top: 40px;
    left: 5%;
    width: 120px;
    height: 120px;
    border: 2px solid var(--ink);
    border-radius: 50%;
    opacity: 0.1;
}

.registration::after {
    content: '';
    position: absolute;
    bottom: 60px;
    right: 8%;
    width: 80px;
    height: 80px;
    background: var(--accent);
    border-radius: 50%;
    opacity: 0.15;
}

.reg-inner {
    max-width: 540px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.reg-title {
    font-family: 'Zen Kaku Gothic New', sans-serif;
    font-size: clamp(32px, 4vw, 44px);
    font-weight: 700;
    text-align: center;
    margin-bottom: 12px;
}

.reg-title .mark {
    display: inline-block;
    color: var(--accent);
    transform: rotate(8deg);
    margin-left: 4px;
}

.reg-sub {
    text-align: center;
    color: var(--muted);
    font-size: 13px;
    margin-bottom: 40px;
}

.reg-form {
    background: var(--paper);
    border: 1px solid var(--ink);
    border-radius: 6px;
    padding: 36px 32px;
}

.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 8px;
    letter-spacing: 0.05em;
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--ink);
    background: var(--paper-2);
    border-radius: 4px;
    font-size: 14px;
    font-family: inherit;
    transition: border-color 0.2s, background 0.2s;
}

.form-input:focus {
    outline: none;
    background: var(--paper);
    border-color: var(--accent);
}

.form-submit {
    width: 100%;
    padding: 16px;
    background: var(--ink);
    color: var(--paper);
    border: none;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 700;
    font-family: inherit;
    cursor: pointer;
    margin-top: 12px;
    transition: background 0.2s, transform 0.2s;
}

.form-submit:hover {
    background: var(--accent);
    transform: translateY(-2px);
}

.form-note {
    text-align: center;
    font-size: 11px;
    color: var(--muted);
    margin-top: 16px;
}

/* ========== OPEN CONTENT ========== */
.open-content {
    background: var(--paper);
    border-top: 1px solid var(--ink);
}

.tabs {
    display: flex;
    justify-content: center;
    gap: 4px;
    margin-bottom: 40px;
}

.tab {
    padding: 8px 20px;
    border: 1px solid var(--ink);
    background: transparent;
    border-radius: 999px;
    font-size: 12px;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.2s;
}

.tab.active {
    background: var(--ink);
    color: var(--paper);
}

.content-grid {
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.content-card {
    background: var(--paper);
    border: 1px solid var(--ink);
    border-radius: 4px;
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.3s, box-shadow 0.3s;
}

.content-card:hover {
    transform: translateY(-4px);
    box-shadow: 4px 4px 0 var(--ink);
}

.content-thumb {
    aspect-ratio: 16 / 9;
    background: var(--paper-2);
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid var(--ink);
    position: relative;
}

.content-tag {
    position: absolute;
    top: 12px;
    left: 12px;
    padding: 4px 10px;
    background: var(--ink);
    color: var(--paper);
    font-family: 'Poppins', sans-serif;
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.12em;
    border-radius: 2px;
}

.content-body {
    padding: 20px;
}

.content-title {
    font-family: 'Zen Kaku Gothic New', sans-serif;
    font-weight: 600;
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 12px;
}

.content-meta {
    font-family: 'Poppins', sans-serif;
    font-size: 11px;
    font-weight: 500;
    color: var(--muted);
    letter-spacing: 0.05em;
}

.view-more-wrap {
    text-align: center;
    margin-top: 48px;
}

.view-more {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    border: 1px solid var(--ink);
    border-radius: 999px;
    text-decoration: none;
    color: var(--ink);
    font-size: 13px;
    font-weight: 600;
    transition: all 0.2s;
}

.view-more:hover {
    background: var(--ink);
    color: var(--paper);
}

/* ========== FOOTER ========== */
footer {
    background: var(--ink);
    color: var(--paper);
    padding: 60px 32px 24px;
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 24px;
    margin-bottom: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(250, 248, 243, 0.2);
}

.footer-logo {
    font-family: 'Zen Kaku Gothic New', sans-serif;
    font-size: 18px;
    font-weight: 700;
    letter-spacing: 0.04em;
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-logo-img {
    width: 36px;
    height: 36px;
    border-radius: 6px;
    background: var(--paper);
}

.footer-links {
    display: flex;
    gap: 24px;
    font-size: 12px;
}

.footer-links a {
    color: var(--paper);
    text-decoration: none;
    opacity: 0.7;
    transition: opacity 0.2s;
}

.footer-links a:hover {
    opacity: 1;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    font-family: 'Poppins', sans-serif;
    font-size: 11px;
    font-weight: 400;
    opacity: 0.6;
    flex-wrap: wrap;
    gap: 12px;
    letter-spacing: 0.04em;
}

/* ========== FLOATING SIDE NAV ========== */
.side-nav {
    position: fixed;
    right: 24px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 90;
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: 14px 10px;
    background: rgba(250, 248, 243, 0.85);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--ink);
    border-radius: 999px;
}

.side-nav-item {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 7px 4px;
    cursor: pointer;
    text-decoration: none;
    color: var(--ink);
}

.side-nav-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    border: 1.5px solid var(--ink);
    background: transparent;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    flex-shrink: 0;
    position: relative;
    z-index: 2;
}

.side-nav-item:hover .side-nav-dot {
    background: var(--ink);
    transform: scale(1.2);
}

.side-nav-item.active .side-nav-dot {
    background: var(--accent);
    border-color: var(--accent);
    transform: scale(1.4);
    box-shadow: 0 0 0 5px rgba(232, 93, 78, 0.18);
}

.side-nav-label {
    position: absolute;
    right: calc(100% + 12px);
    top: 50%;
    transform: translateY(-50%) translateX(8px);
    background: var(--ink);
    color: var(--paper);
    font-size: 11px;
    font-weight: 600;
    padding: 6px 12px;
    border-radius: 4px;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    letter-spacing: 0.05em;
}

.side-nav-label::after {
    content: '';
    position: absolute;
    right: -3px;
    top: 50%;
    transform: translateY(-50%) rotate(45deg);
    width: 8px;
    height: 8px;
    background: var(--ink);
}

.side-nav-item:hover .side-nav-label,
.side-nav-item.active .side-nav-label {
    opacity: 1;
    transform: translateY(-50%) translateX(0);
}

.side-nav-item.active .side-nav-label {
    background: var(--accent);
}

.side-nav-item.active .side-nav-label::after {
    background: var(--accent);
}

@media (max-width: 1100px) {
    .side-nav {
        display: none;
    }
}

/* ========== FLOATING DECORATIVE ELEMENTS ========== */
/* outer wrapper holds position + mouse parallax */
.deco {
    position: absolute;
    pointer-events: none;
    z-index: 1;
    --mx: 0px;
    --my: 0px;
    transform: translate3d(var(--mx), var(--my), 0);
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* inner svg gets the animation transform - so they don't conflict */
.deco>svg {
    display: block;
    width: 100%;
    height: 100%;
    overflow: visible;
}

.deco-float>svg {
    animation: floatY 6s ease-in-out infinite;
}

.deco-float-2>svg {
    animation: floatY 8s ease-in-out infinite -2s;
}

.deco-float-slow>svg {
    animation: floatY 10s ease-in-out infinite -4s;
}

@keyframes floatY {

    0%,
    100% {
        transform: translateY(0) rotate(var(--rot, 0deg));
    }

    50% {
        transform: translateY(-16px) rotate(var(--rot, 0deg));
    }
}

.deco-spin>svg {
    animation: spinSlow 20s linear infinite;
    transform-origin: 50% 50%;
}

.deco-spin-rev>svg {
    animation: spinSlow 28s linear infinite reverse;
    transform-origin: 50% 50%;
}

@keyframes spinSlow {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

/* dashed line march animation (applied directly to inner path elements) */
.deco-dash {
    stroke-dasharray: 4 6;
    animation: dashMove 30s linear infinite;
}

@keyframes dashMove {
    to {
        stroke-dashoffset: -200;
    }
}

/* draw-in on scroll: simple fade + scale */
.deco-draw {
    opacity: 0;
    transform: scale(0.7);
    transform-origin: center;
    transition: opacity 1s ease-out, transform 1.2s cubic-bezier(0.34, 1.56, 0.64, 1);
    transform-box: fill-box;
}

.deco-draw.is-visible {
    opacity: 1;
    transform: scale(1);
}

/* sections need positioning for deco layering */
section {
    position: relative;
}

.features,
.forwhom,
.instructor,
.flow,
.faq,
.open-content,
.registration {
    overflow: hidden;
}

.theme {
    overflow-x: clip;
    overflow-y: visible;
}

.container,
.hero-inner,
.about-inner,
.theme-swiper,
.theme-swiper-outer,
.features-grid,
.forwhom-grid,
.instructor-card,
.organizer-note,
.flow-inner,
.faq-inner,
.reg-inner,
.content-grid,
.view-more-wrap {
    position: relative;
    z-index: 2;
}

/* ========== ANIMATIONS ========== */
@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

.fade-up {
    animation: fadeUp 0.8s ease-out backwards;
}

.delay-1 {
    animation-delay: 0.1s;
}

.delay-2 {
    animation-delay: 0.2s;
}

.delay-3 {
    animation-delay: 0.3s;
}

@keyframes drawCircle {
    from {
        stroke-dashoffset: 1000;
    }

    to {
        stroke-dashoffset: 0;
    }
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

.floaty {
    animation: float 4s ease-in-out infinite;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 1100px) {
    nav ul {
        display: none;
    }
}

@media (max-width: 960px) {
    .theme {
        padding: 80px 0;
    }
}

@media (max-width: 720px) {
    .sns-list {
        display: none;
    }

    .nav-cta .btn-ghost {
        display: none;
    }

    .logo-text {
        display: none;
    }

    header {
        padding: 12px 20px;
    }

    .hero {
        padding: 60px 24px 80px;
        min-height: auto;
        max-height: none;
        display: block;
    }

    .hero-inner {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero-art {
        max-width: 320px;
        margin: 0 auto;
    }

    section {
        padding: 60px 24px;
    }

    .theme {
        padding: 60px 0;
    }

    .about-inner {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .features-grid,
    .forwhom-grid,
    .content-grid {
        grid-template-columns: 1fr;
    }

    .instructor-card {
        grid-template-columns: 1fr;
        padding: 32px 24px;
    }

    .instructor-portrait {
        max-width: 200px;
        margin: 0 auto;
    }

    .flow-inner {
        grid-template-columns: 1fr;
    }

    .footer-top {
        flex-direction: column;
        text-align: center;
    }
}