* {
    box-sizing: border-box;
}

:root {
    --page-bg: #FFF9FC;
    --surface: #FFFFFF;
    --surface-pink: #FFF1F6;
    --surface-purple: #F6F3FF;
    --surface-gray: #F8F6F7;
    --title: #31262C;
    --text: #51454C;
    --muted: #7C6E75;
    --soft: #A2949B;
    --pink: #FF5C98;
    --berry: #D9467B;
    --peach: #FF96AD;
    --purple: #8B74E8;
    --deep-purple: #6250B0;
    --border: rgba(255, 92, 152, 0.15);
    --shadow: 0 14px 38px rgba(70, 44, 58, 0.08);
    --shadow-strong: 0 20px 48px rgba(217, 70, 123, 0.14);
    --gradient: linear-gradient(135deg, #FF96AD 0%, #FF5C98 50%, #8B74E8 100%);
    --footer: #30252B;
    --footer-text: #FFEAF2;
    --header-height: 82px;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    margin: 0;
    min-width: 320px;
    overflow-x: hidden;
    background:
        radial-gradient(circle at 10% 8%, rgba(255, 150, 173, 0.16), transparent 28rem),
        radial-gradient(circle at 90% 18%, rgba(139, 116, 232, 0.12), transparent 26rem),
        var(--page-bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
    line-height: 1.75;
    padding-top: var(--header-height);
}

body.mobile-menu-open {
    overflow: hidden;
}

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

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

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

button {
    font: inherit;
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
    outline: 3px solid rgba(98, 80, 176, 0.42);
    outline-offset: 3px;
}

.skip-link {
    position: fixed;
    top: 8px;
    left: 12px;
    z-index: 9999;
    transform: translateY(-150%);
    background: var(--title);
    color: #fff;
    padding: 10px 16px;
    border-radius: 12px;
}

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

.site-header {
    position: fixed;
    inset: 0 0 auto;
    z-index: 1000;
    height: var(--header-height);
    border-bottom: 1px solid rgba(255, 92, 152, 0.12);
    background: rgba(255, 249, 252, 0.92);
    backdrop-filter: blur(18px);
}

.top-nav {
    position: relative;
    width: min(1220px, calc(100% - 40px));
    height: 100%;
    margin: 0 auto;
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
    align-items: center;
    gap: 22px;
}

.desktop-nav-left,
.desktop-nav-right {
    display: flex;
    align-items: center;
    gap: 6px;
    min-width: 0;
}

.desktop-nav-right {
    justify-content: flex-end;
}

.nav-link {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0 14px;
    color: var(--muted);
    border-radius: 999px;
    white-space: nowrap;
    font-size: 15px;
    font-weight: 650;
}

.nav-link:hover,
.nav-link.is-active {
    color: var(--berry);
    background: var(--surface-pink);
}

.nav-link.is-active::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: 3px;
    width: 18px;
    height: 3px;
    transform: translateX(-50%);
    border-radius: 999px;
    background: var(--gradient);
    pointer-events: none;
}

.brand-logo,
.footer-logo,
.drawer-brand {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
}

.brand-logo {
    justify-self: center;
    padding: 0 10px;
}

.brand-logo img,
.footer-logo img,
.drawer-brand img {
    width: auto;
    object-fit: contain;
}

.brand-text {
    display: inline-flex;
    align-items: center;
    font-size: 25px;
    line-height: 1;
    font-weight: 900;
    letter-spacing: -0.04em;
    background: var(--gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    white-space: nowrap;
}

.round-menu-button,
.panel-close,
.drawer-close {
    position: relative;
    z-index: 2;
    border: 0;
    cursor: pointer;
}

.round-menu-button {
    flex: 0 0 46px;
    width: 46px;
    height: 46px;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    border: 1px solid var(--border);
    border-radius: 50%;
    background: #fff;
    box-shadow: 0 8px 24px rgba(70, 44, 58, 0.08);
}

.round-menu-button span {
    width: 17px;
    height: 2px;
    border-radius: 999px;
    background: var(--berry);
    pointer-events: none;
}

.mobile-nav-actions {
    display: none;
}

.mobile-experience {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0 18px;
    color: #fff;
    border-radius: 999px;
    background: var(--gradient);
    font-weight: 750;
    box-shadow: 0 10px 24px rgba(217, 70, 123, 0.2);
}

main {
    display: block;
}

.page-shell,
.home-section,
.hero-wrap {
    width: min(1220px, calc(100% - 40px));
    margin-inline: auto;
}

.home-section {
    padding: 86px 0;
}

.home-section + .home-section {
    border-top: 1px solid rgba(255, 92, 152, 0.1);
}

.section-heading {
    max-width: 760px;
    margin-bottom: 34px;
}

.section-heading.center {
    margin-inline: auto;
    text-align: center;
}

.eyebrow {
    display: inline-block;
    margin-bottom: 10px;
    color: var(--berry);
    font-size: 13px;
    font-weight: 850;
    letter-spacing: 0.12em;
}

h1,
h2,
h3,
h4 {
    margin: 0;
    color: var(--title);
    line-height: 1.28;
}

h1 {
    font-size: clamp(38px, 5.6vw, 74px);
    letter-spacing: -0.055em;
}

h2 {
    font-size: clamp(28px, 3.6vw, 46px);
    letter-spacing: -0.035em;
}

h3 {
    font-size: clamp(19px, 2vw, 25px);
}

p {
    margin: 0;
}

.lead {
    margin-top: 18px;
    color: var(--muted);
    font-size: clamp(16px, 1.45vw, 19px);
    line-height: 1.9;
}

.text-link {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    color: var(--berry);
    font-weight: 760;
}

.text-link::after {
    content: "→";
    margin-left: 8px;
    transition: transform 0.2s ease;
}

.text-link:hover::after {
    transform: translateX(4px);
}

.button-row {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 28px;
}

.primary-button,
.secondary-button {
    min-height: 48px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0 24px;
    border-radius: 999px;
    font-weight: 800;
    white-space: nowrap;
}

.primary-button {
    color: #fff;
    background: var(--gradient);
    box-shadow: var(--shadow-strong);
}

.secondary-button {
    color: var(--berry);
    border: 1px solid var(--border);
    background: #fff;
}

.primary-button:hover,
.secondary-button:hover {
    transform: translateY(-2px);
}

.home-hero {
    position: relative;
    padding: 74px 0 52px;
}

.home-hero::before,
.home-hero::after {
    content: "";
    position: absolute;
    border-radius: 50%;
    filter: blur(2px);
    pointer-events: none;
}

.home-hero::before {
    top: 8%;
    left: -7%;
    width: 210px;
    aspect-ratio: 1;
    background: rgba(255, 150, 173, 0.15);
}

.home-hero::after {
    top: 18%;
    right: -4%;
    width: 180px;
    aspect-ratio: 1;
    background: rgba(139, 116, 232, 0.12);
}

.hero-grid {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: minmax(190px, 0.72fr) minmax(420px, 1.7fr) minmax(190px, 0.72fr);
    gap: 28px;
    align-items: center;
}

.hero-center {
    text-align: center;
}

.hero-center .lead {
    max-width: 720px;
    margin-inline: auto;
}

.hero-center .button-row {
    justify-content: center;
}

.hero-side-card {
    padding: 26px;
    border: 1px solid var(--border);
    border-radius: 26px;
    background: rgba(255, 255, 255, 0.82);
    box-shadow: var(--shadow);
}

.hero-side-card h2 {
    margin-bottom: 12px;
    font-size: 22px;
}

.hero-side-card p {
    color: var(--muted);
    font-size: 15px;
}

.hero-visual {
    position: relative;
    overflow: hidden;
    min-height: 320px;
    margin-top: 42px;
    border: 1px solid var(--border);
    border-radius: 34px;
    background:
        radial-gradient(circle at 20% 30%, rgba(255,255,255,.9) 0 8%, transparent 9%),
        radial-gradient(circle at 77% 28%, rgba(255,255,255,.75) 0 6%, transparent 7%),
        linear-gradient(125deg, #FFE6EF, #FFF8FB 42%, #EDE8FF);
    box-shadow: var(--shadow-strong);
}

.hero-visual::before {
    content: "";
    position: absolute;
    left: 8%;
    bottom: -18%;
    width: 34%;
    aspect-ratio: 1;
    border-radius: 48% 52% 36% 64%;
    background: linear-gradient(160deg, rgba(255, 92, 152, 0.9), rgba(255, 150, 173, 0.45));
    transform: rotate(-10deg);
}

.hero-visual::after {
    content: "";
    position: absolute;
    right: 8%;
    top: 18%;
    width: 27%;
    aspect-ratio: 1;
    border: 26px solid rgba(139, 116, 232, 0.32);
    border-radius: 50%;
}

.visual-copy {
    position: absolute;
    z-index: 2;
    left: 50%;
    top: 50%;
    width: min(580px, 70%);
    transform: translate(-50%, -50%);
    text-align: center;
}

.visual-copy strong {
    display: block;
    color: var(--title);
    font-size: clamp(25px, 3.2vw, 46px);
    line-height: 1.25;
}

.visual-copy span {
    display: block;
    margin-top: 12px;
    color: var(--muted);
}

.index-grid,
.card-grid,
.gallery-grid,
.interest-grid,
.topic-grid,
.feedback-grid,
.feature-grid,
.related-grid {
    display: grid;
    gap: 20px;
}

.index-grid,
.gallery-grid,
.feedback-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

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

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

.topic-grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
}

.info-card,
.story-card,
.gallery-card,
.interest-card,
.topic-card,
.feedback-card,
.feature-card,
.related-card,
.notice-card,
.rule-card,
.step-card,
.support-card,
.article-card {
    position: relative;
    padding: 26px;
    border: 1px solid var(--border);
    border-radius: 24px;
    background: var(--surface);
    box-shadow: var(--shadow);
}

.info-card:hover,
.story-card:hover,
.gallery-card:hover,
.interest-card:hover,
.topic-card:hover,
.feature-card:hover,
.related-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-strong);
}

.info-card h3,
.story-card h3,
.gallery-card h3,
.interest-card h3,
.topic-card h3,
.feature-card h3,
.related-card h3,
.article-card h3 {
    margin-bottom: 10px;
}

.info-card p,
.story-card p,
.gallery-card p,
.interest-card p,
.topic-card p,
.feedback-card p,
.feature-card p,
.related-card p,
.article-card p {
    color: var(--muted);
}

.card-number,
.card-symbol {
    width: 44px;
    height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    border-radius: 15px;
    color: #fff;
    background: var(--gradient);
    font-weight: 850;
}

.story-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
    gap: 24px;
}

.story-feature {
    position: relative;
    min-height: 480px;
    overflow: hidden;
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    border-radius: 30px;
    background: linear-gradient(155deg, #3F3140 0%, #6E4C66 48%, #BC6F8F 100%);
    box-shadow: var(--shadow-strong);
}

.story-feature::before {
    content: "";
    position: absolute;
    inset: 8% 8% auto auto;
    width: 180px;
    aspect-ratio: 1;
    border: 24px solid rgba(255,255,255,.12);
    border-radius: 50%;
    pointer-events: none;
}

.story-feature > * {
    position: relative;
    z-index: 1;
}

.story-feature h3 {
    max-width: 580px;
    margin-bottom: 14px;
    color: #fff;
    font-size: clamp(28px, 4vw, 48px);
}

.story-feature p {
    max-width: 700px;
    color: rgba(255,255,255,.83);
}

.story-stack {
    display: grid;
    gap: 16px;
}

.story-stack .story-card {
    padding: 22px;
}

.tag {
    display: inline-flex;
    align-items: center;
    min-height: 30px;
    margin-bottom: 14px;
    padding: 0 12px;
    border-radius: 999px;
    color: var(--berry);
    background: var(--surface-pink);
    font-size: 13px;
    font-weight: 800;
}

.media-placeholder {
    position: relative;
    overflow: hidden;
    min-height: 190px;
    margin: -26px -26px 24px;
    border-radius: 24px 24px 0 0;
    background: linear-gradient(135deg, #FFE2EC, #F7F1FF);
}

.media-placeholder::before,
.media-placeholder::after {
    content: "";
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
}

.media-placeholder::before {
    width: 120px;
    height: 120px;
    left: 16%;
    top: 24%;
    background: rgba(255, 92, 152, 0.3);
}

.media-placeholder::after {
    width: 150px;
    height: 150px;
    right: -20px;
    bottom: -50px;
    border: 22px solid rgba(139, 116, 232, 0.24);
}

.gallery-card:nth-child(2n) .media-placeholder {
    background: linear-gradient(135deg, #F2EEFF, #FFF5F8);
}

.gallery-card:nth-child(3n) .media-placeholder {
    background: linear-gradient(135deg, #FFEADF, #FFF8F2);
}

.split-section,
.app-showcase,
.security-privacy-grid,
.brand-panel,
.page-intro-grid,
.content-split {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px;
    align-items: center;
}

.soft-panel,
.purple-panel,
.dark-panel {
    padding: clamp(28px, 5vw, 58px);
    border-radius: 32px;
}

.soft-panel {
    background: var(--surface-pink);
}

.purple-panel {
    background: var(--surface-purple);
}

.dark-panel {
    color: var(--footer-text);
    background: var(--footer);
}

.dark-panel h2,
.dark-panel h3 {
    color: #fff;
}

.dark-panel p {
    color: rgba(255, 234, 242, 0.78);
}

.journal-paper {
    padding: 44px;
    border: 1px solid var(--border);
    border-radius: 30px;
    background:
        linear-gradient(#fff 0 0) padding-box,
        repeating-linear-gradient(to bottom, transparent 0 35px, rgba(217,70,123,.1) 36px) border-box;
    box-shadow: var(--shadow);
}

.journal-paper p + p {
    margin-top: 18px;
}

.app-phone {
    position: relative;
    width: min(330px, 78%);
    aspect-ratio: 0.54;
    margin: 0 auto;
    padding: 18px;
    border: 10px solid #3E3038;
    border-radius: 46px;
    background: #fff;
    box-shadow: var(--shadow-strong);
}

.app-phone::before {
    content: "";
    position: absolute;
    top: 10px;
    left: 50%;
    width: 38%;
    height: 22px;
    transform: translateX(-50%);
    border-radius: 999px;
    background: #3E3038;
}

.phone-screen {
    height: 100%;
    overflow: hidden;
    padding: 42px 16px 20px;
    border-radius: 30px;
    background: linear-gradient(180deg, #FFF1F6, #F6F3FF);
}

.phone-screen .mini-card {
    height: 96px;
    margin-bottom: 12px;
    border-radius: 18px;
    background: rgba(255,255,255,.92);
    box-shadow: 0 10px 22px rgba(70,44,58,.07);
}

.phone-screen .mini-card:nth-child(2) {
    height: 152px;
    background: linear-gradient(145deg, #FFD9E6, #F2EAFF);
}

.phone-screen .mini-card:nth-child(3) {
    height: 112px;
}

.principle-list {
    display: grid;
    gap: 14px;
}

.principle-item {
    display: grid;
    grid-template-columns: 48px 1fr;
    gap: 16px;
    align-items: start;
    padding: 20px 0;
    border-bottom: 1px solid rgba(255,92,152,.14);
}

.principle-item:last-child {
    border-bottom: 0;
}

.principle-item strong {
    display: block;
    margin-bottom: 4px;
    color: var(--title);
}

.principle-item p {
    color: var(--muted);
}

.principle-dot {
    width: 44px;
    height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: var(--berry);
    background: var(--surface-pink);
    font-weight: 900;
}

.faq-list {
    display: grid;
    gap: 14px;
}

.faq-list details {
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: 20px;
    background: #fff;
    box-shadow: 0 8px 24px rgba(70,44,58,.05);
}

.faq-list summary {
    position: relative;
    min-height: 58px;
    display: flex;
    align-items: center;
    padding: 16px 54px 16px 20px;
    cursor: pointer;
    color: var(--title);
    font-weight: 800;
    list-style: none;
}

.faq-list summary::-webkit-details-marker {
    display: none;
}

.faq-list summary::after {
    content: "+";
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--berry);
    font-size: 24px;
}

.faq-list details[open] summary::after {
    content: "−";
}

.faq-list details p {
    padding: 0 20px 20px;
    color: var(--muted);
}

.brand-panel {
    padding: clamp(30px, 5vw, 60px);
    border-radius: 34px;
    background: linear-gradient(135deg, #FFF0F5, #F3EEFF);
    box-shadow: var(--shadow);
}

.brand-orbit {
    position: relative;
    min-height: 320px;
}

.brand-orbit::before,
.brand-orbit::after {
    content: "";
    position: absolute;
    border-radius: 50%;
}

.brand-orbit::before {
    width: 230px;
    height: 230px;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    background: var(--gradient);
    box-shadow: 0 20px 50px rgba(217,70,123,.22);
}

.brand-orbit::after {
    width: 290px;
    height: 290px;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    border: 1px dashed rgba(98,80,176,.35);
}

.brand-orbit span {
    position: absolute;
    z-index: 2;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    color: #fff;
    font-size: 34px;
    font-weight: 900;
    white-space: nowrap;
}

.page-hero {
    padding: 76px 0 42px;
}

.page-hero .page-shell {
    position: relative;
    overflow: hidden;
    padding: clamp(32px, 5vw, 62px);
    border: 1px solid var(--border);
    border-radius: 34px;
    background: linear-gradient(130deg, rgba(255,255,255,.96), rgba(255,241,246,.93) 55%, rgba(246,243,255,.93));
    box-shadow: var(--shadow);
}

.page-hero .page-shell::after {
    content: "";
    position: absolute;
    right: -60px;
    top: -70px;
    width: 250px;
    height: 250px;
    border: 38px solid rgba(139,116,232,.12);
    border-radius: 50%;
    pointer-events: none;
}

.page-hero h1 {
    max-width: 850px;
    font-size: clamp(36px, 5vw, 64px);
}

.page-hero .lead {
    max-width: 860px;
}

.breadcrumbs {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
    margin-bottom: 16px;
    color: var(--soft);
    font-size: 14px;
}

.breadcrumbs a:hover {
    color: var(--berry);
}

.content-section {
    padding: 58px 0;
}

.content-section + .content-section {
    border-top: 1px solid rgba(255,92,152,.1);
}

.content-section .section-heading {
    margin-bottom: 28px;
}

.article-flow {
    display: grid;
    gap: 22px;
}

.article-flow article {
    padding: 30px;
    border: 1px solid var(--border);
    border-radius: 24px;
    background: #fff;
    box-shadow: var(--shadow);
}

.article-flow article h2 {
    margin-bottom: 14px;
    font-size: clamp(24px, 3vw, 36px);
}

.article-flow article h3 {
    margin: 24px 0 10px;
}

.article-flow article p + p {
    margin-top: 14px;
}

.article-flow article ul,
.article-flow article ol {
    margin: 16px 0 0;
    padding-left: 22px;
}

.article-flow article li + li {
    margin-top: 8px;
}

.callout {
    padding: 24px;
    border-left: 5px solid var(--pink);
    border-radius: 0 20px 20px 0;
    background: var(--surface-pink);
}

.callout strong {
    display: block;
    margin-bottom: 6px;
    color: var(--title);
}

.timeline {
    position: relative;
    display: grid;
    gap: 20px;
}

.timeline::before {
    content: "";
    position: absolute;
    left: 22px;
    top: 14px;
    bottom: 14px;
    width: 2px;
    background: linear-gradient(var(--peach), var(--purple));
}

.timeline-item {
    position: relative;
    padding-left: 68px;
}

.timeline-item::before {
    content: "";
    position: absolute;
    left: 12px;
    top: 7px;
    width: 22px;
    height: 22px;
    border: 6px solid #fff;
    border-radius: 50%;
    background: var(--pink);
    box-shadow: 0 0 0 1px var(--border);
}

.timeline-item h3 {
    margin-bottom: 8px;
}

.check-list,
.link-list {
    display: grid;
    gap: 12px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.check-list li {
    position: relative;
    padding-left: 30px;
}

.check-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    top: 0;
    color: var(--berry);
    font-weight: 900;
}

.link-list a {
    min-height: 48px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 16px;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: #fff;
    font-weight: 720;
}

.link-list a::after {
    content: "→";
    color: var(--berry);
}

.service-prompt {
    margin-top: 30px;
    padding: 30px;
    border-radius: 26px;
    background: var(--footer);
    color: rgba(255,234,242,.8);
}

.service-prompt h2,
.service-prompt h3 {
    color: #fff;
}

.service-prompt p {
    margin-top: 10px;
}

.service-prompt .button-row {
    margin-top: 20px;
}

.service-prompt .secondary-button {
    color: var(--footer-text);
    border-color: rgba(255,234,242,.24);
    background: rgba(255,255,255,.06);
}

.channel-overlay,
.mobile-drawer-overlay {
    position: fixed;
    inset: 0;
    z-index: 1200;
    visibility: hidden;
    opacity: 0;
    pointer-events: none;
    transition: opacity .22s ease, visibility .22s ease;
}

.channel-overlay {
    top: var(--header-height);
    background: rgba(49,38,44,.28);
}

.channel-overlay.is-open,
.mobile-drawer-overlay.is-open {
    visibility: visible;
    opacity: 1;
    pointer-events: auto;
}

.channel-panel {
    width: 100%;
    max-height: calc(100vh - var(--header-height));
    overflow-y: auto;
    padding: 32px max(20px, calc((100vw - 1220px) / 2));
    background: rgba(255,249,252,.98);
    border-top: 1px solid var(--border);
    box-shadow: 0 30px 70px rgba(49,38,44,.2);
}

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

.panel-heading h2 {
    max-width: 700px;
    font-size: clamp(25px, 3vw, 36px);
}

.panel-close,
.drawer-close {
    flex: 0 0 46px;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    color: var(--berry);
    background: #fff;
    box-shadow: var(--shadow);
    font-size: 30px;
    line-height: 1;
}

.channel-columns {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px;
}

.channel-columns section {
    padding: 22px;
    border: 1px solid var(--border);
    border-radius: 22px;
    background: #fff;
}

.channel-columns h3 {
    margin-bottom: 14px;
    color: var(--berry);
    font-size: 18px;
}

.channel-columns a {
    display: block;
    min-height: 44px;
    padding: 11px 0;
    border-bottom: 1px solid rgba(255,92,152,.09);
}

.channel-columns a:last-child {
    border-bottom: 0;
}

.channel-columns strong {
    display: block;
    color: var(--title);
    font-size: 15px;
}

.channel-columns span {
    display: block;
    margin-top: 3px;
    color: var(--muted);
    font-size: 13px;
    line-height: 1.55;
}

.mobile-drawer-overlay {
    display: none;
    background: rgba(49,38,44,.4);
}

.mobile-drawer {
    position: absolute;
    inset: 0 0 0 auto;
    width: min(88vw, 390px);
    height: 100%;
    overflow-y: auto;
    transform: translateX(100%);
    background: var(--page-bg);
    box-shadow: -24px 0 60px rgba(49,38,44,.22);
    transition: transform .24s ease;
}

.mobile-drawer-overlay.is-open .mobile-drawer {
    transform: translateX(0);
}

.mobile-drawer-head {
    position: sticky;
    top: 0;
    z-index: 2;
    min-height: 74px;
    padding: 12px 18px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    border-bottom: 1px solid var(--border);
    background: rgba(255,249,252,.96);
    backdrop-filter: blur(16px);
}

.drawer-nav {
    display: grid;
    padding: 14px 16px 30px;
}

.drawer-nav a {
    min-height: 50px;
    display: flex;
    align-items: center;
    padding: 0 14px;
    border-bottom: 1px solid rgba(255,92,152,.1);
    color: var(--title);
    font-weight: 720;
}

.drawer-nav a:hover {
    color: var(--berry);
    background: var(--surface-pink);
}

.mobile-bottom-nav {
    display: none;
}

.site-footer {
    margin-top: 60px;
    color: var(--footer-text);
    background: var(--footer);
}

.footer-inner {
    width: min(1220px, calc(100% - 40px));
    margin: 0 auto;
    padding: 62px 0 46px;
    display: grid;
    grid-template-columns: 1.5fr repeat(4, minmax(120px, 1fr));
    gap: 34px;
}

.footer-brand p {
    max-width: 360px;
    margin-top: 18px;
    color: rgba(255,234,242,.68);
}

.footer-logo .brand-text {
    font-size: 28px;
}

.footer-group h2 {
    margin-bottom: 14px;
    color: #fff;
    font-size: 17px;
}

.footer-group a {
    min-height: 36px;
    display: flex;
    align-items: center;
    color: rgba(255,234,242,.7);
    font-size: 14px;
}

.footer-group a:hover {
    color: #fff;
}

.footer-bottom {
    width: min(1220px, calc(100% - 40px));
    margin: 0 auto;
    padding: 24px 0 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    border-top: 1px solid rgba(255,234,242,.12);
    color: rgba(255,234,242,.56);
    font-size: 13px;
}

.footer-bottom p:first-child {
    max-width: 820px;
}

@media (max-width: 1120px) {
    .top-nav {
        width: min(100% - 28px, 1220px);
        gap: 12px;
    }

    .nav-link {
        padding-inline: 9px;
        font-size: 14px;
    }

    .hero-grid {
        grid-template-columns: 1fr 2fr 1fr;
        gap: 18px;
    }

    .topic-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .interest-grid,
    .card-grid,
    .feature-grid,
    .related-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

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

    .footer-brand {
        grid-column: 1 / -1;
    }
}

@media (max-width: 820px) {
    :root {
        --header-height: 70px;
    }

    body {
        padding-bottom: calc(74px + env(safe-area-inset-bottom));
    }

    .top-nav {
        width: calc(100% - 32px);
        grid-template-columns: 1fr auto;
    }

    .desktop-nav-left,
    .desktop-nav-right {
        display: none;
    }

    .brand-logo {
        justify-self: start;
        padding: 0;
    }

    .brand-text {
        font-size: 22px;
    }

    .mobile-nav-actions {
        display: flex;
        align-items: center;
        justify-content: flex-end;
        gap: 10px;
    }

    .round-menu-button {
        width: 44px;
        height: 44px;
        flex-basis: 44px;
    }

    .page-shell,
    .home-section,
    .hero-wrap {
        width: calc(100% - 32px);
    }

    .home-section {
        padding: 60px 0;
    }

    .home-hero {
        padding-top: 46px;
    }

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

    .hero-center {
        order: -1;
        text-align: left;
    }

    .hero-center .lead {
        margin-inline: 0;
    }

    .hero-center .button-row {
        justify-content: flex-start;
    }

    .hero-side-card {
        padding: 22px;
    }

    .hero-visual {
        min-height: 280px;
        margin-top: 24px;
        border-radius: 28px;
    }

    .visual-copy {
        width: 84%;
    }

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

    .story-layout,
    .split-section,
    .app-showcase,
    .security-privacy-grid,
    .brand-panel,
    .page-intro-grid,
    .content-split {
        grid-template-columns: 1fr;
    }

    .story-feature {
        min-height: 420px;
        padding: 30px;
    }

    .app-showcase > :first-child {
        order: 1;
    }

    .app-showcase > :last-child {
        order: 2;
    }

    .channel-overlay {
        display: none;
    }

    .mobile-drawer-overlay {
        display: block;
    }

    .mobile-bottom-nav {
        position: fixed;
        inset: auto 0 0;
        z-index: 950;
        min-height: calc(64px + env(safe-area-inset-bottom));
        padding: 6px 10px env(safe-area-inset-bottom);
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        border-top: 1px solid var(--border);
        background: rgba(255,255,255,.94);
        backdrop-filter: blur(16px);
        box-shadow: 0 -10px 30px rgba(70,44,58,.08);
    }

    .mobile-bottom-nav a {
        min-height: 52px;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 16px;
        color: var(--muted);
        font-size: 13px;
        font-weight: 800;
    }

    .mobile-bottom-nav a.is-active {
        color: var(--berry);
        background: var(--surface-pink);
    }

    .footer-inner {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        padding-top: 50px;
    }

    .footer-bottom {
        padding-bottom: 30px;
        flex-direction: column;
        align-items: flex-start;
    }

    .site-footer {
        margin-top: 30px;
    }
}

@media (max-width: 560px) {
    .index-grid,
    .gallery-grid,
    .feedback-grid,
    .topic-grid,
    .interest-grid,
    .card-grid,
    .feature-grid,
    .related-grid {
        grid-template-columns: 1fr;
    }

    .home-section {
        padding-block: 52px;
    }

    h1 {
        font-size: 40px;
    }

    .page-hero {
        padding-top: 36px;
    }

    .page-hero .page-shell {
        padding: 28px 22px;
        border-radius: 26px;
    }

    .info-card,
    .story-card,
    .gallery-card,
    .interest-card,
    .topic-card,
    .feedback-card,
    .feature-card,
    .related-card,
    .notice-card,
    .rule-card,
    .step-card,
    .support-card,
    .article-card {
        padding: 22px;
    }

    .media-placeholder {
        margin: -22px -22px 22px;
    }

    .story-feature {
        min-height: 380px;
        padding: 26px;
        border-radius: 26px;
    }

    .soft-panel,
    .purple-panel,
    .dark-panel,
    .journal-paper {
        padding: 26px 22px;
        border-radius: 24px;
    }

    .brand-orbit {
        min-height: 250px;
    }

    .brand-orbit::before {
        width: 180px;
        height: 180px;
    }

    .brand-orbit::after {
        width: 230px;
        height: 230px;
    }

    .footer-inner {
        grid-template-columns: 1fr 1fr;
        gap: 28px 20px;
    }

    .footer-brand {
        grid-column: 1 / -1;
    }

    .button-row {
        align-items: stretch;
        flex-direction: column;
    }

    .primary-button,
    .secondary-button {
        width: 100%;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.001ms !important;
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
    }
}