:root {
    --c-bg: #ffffff;
    --c-bg-soft: #fafbfc;
    --c-surface: #f4f5f7;
    --c-line: #e4e7eb;
    --c-line-strong: #c8ced5;
    --c-text: #1a1d20;
    --c-text-muted: #5a6068;
    --c-text-faint: #8c93a0;
    --c-accent: #6fb5cc;
    --c-accent-strong: #4a93ab;
    --c-accent-soft: #e6f2f6;
    --shadow-soft: 0 1px 2px rgba(15, 30, 45, 0.04), 0 8px 24px rgba(15, 30, 45, 0.04);
    --shadow-pop: 0 4px 12px rgba(15, 30, 45, 0.08), 0 24px 56px rgba(15, 30, 45, 0.10);
    --radius: 12px;
    --radius-lg: 20px;
    --maxw: 1180px;
    --gutter: clamp(1rem, 4vw, 2.5rem);
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', 'Yu Gothic UI', 'Yu Gothic', Meiryo, system-ui, Arial, sans-serif;
    --font-display: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', 'Yu Gothic UI', 'Yu Gothic', Meiryo, system-ui, sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas, 'Liberation Mono', monospace;
}

* { box-sizing: border-box; }
/* head のインライン style で hidden にしている FOUC ガードを、本 CSS が当たった時点で解除する */
html { visibility: visible; -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

/* ページ間遷移のクロスフェード。対応ブラウザ（Chrome 126+ 等）のみ自動適用、非対応は通常遷移。 */
@view-transition { navigation: auto; }
::view-transition-old(root), ::view-transition-new(root) {
    animation-duration: .28s;
    animation-timing-function: cubic-bezier(.4, 0, .2, 1);
}

.visually-hidden {
    position: absolute !important;
    width: 1px; height: 1px;
    padding: 0; margin: -1px; overflow: hidden;
    clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}
body {
    margin: 0;
    font-family: var(--font-sans);
    color: var(--c-text);
    background: var(--c-bg);
    line-height: 1.75;
    font-feature-settings: 'palt' 1, 'pkna' 1;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
:lang(ja), p, h1, h2, h3, h4 {
    word-break: auto-phrase;
    line-break: strict;
    overflow-wrap: break-word;
}
img, svg { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }

.container {
    width: 100%;
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 0 var(--gutter);
}

.skip-link {
    position: absolute; left: -9999px; top: 0;
    background: var(--c-text); color: #fff; padding: .5rem .75rem; z-index: 1000;
}
.skip-link:focus { left: 1rem; top: 1rem; }

/* ========== Header ========== */
.site-header {
    position: sticky; top: 0; z-index: 50;
    background: rgba(255, 255, 255, 0.78);
    backdrop-filter: saturate(150%) blur(10px);
    -webkit-backdrop-filter: saturate(150%) blur(10px);
    border-bottom: 1px solid var(--c-line);
}
.header-inner {
    display: flex; align-items: center; justify-content: space-between;
    min-height: 88px; gap: 1.5rem;
    padding: .75rem 0;
}
.brand-logo { height: 56px; width: auto; }
@media (max-width: 720px) {
    .brand-logo { height: 44px; }
    .header-inner { min-height: 72px; }
}
.site-nav {
    display: flex; gap: 1.75rem; font-size: .9rem; color: var(--c-text-muted);
}
.site-nav a {
    position: relative; padding: .25rem 0;
    transition: color .2s ease;
}
.site-nav a:hover { color: var(--c-text); }
.site-nav a::after {
    content: ''; position: absolute; left: 0; right: 0; bottom: -4px; height: 1px;
    background: var(--c-accent); transform: scaleX(0); transform-origin: left;
    transition: transform .25s ease;
}
.site-nav a:hover::after { transform: scaleX(1); }

.nav-toggle {
    display: none;
    background: transparent; border: none;
    width: 44px; height: 44px;
    padding: 0;
    flex-direction: column; justify-content: center; align-items: center;
    gap: 5px;
    cursor: pointer;
}
.nav-toggle span {
    display: block; width: 22px; height: 2px;
    background: var(--c-text); border-radius: 1px;
    transition: transform .25s ease, opacity .2s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 720px) {
    .nav-toggle { display: flex; }
    .site-nav {
        position: absolute; left: 0; right: 0; top: 100%;
        flex-direction: column; gap: 0;
        background: rgba(255, 255, 255, 0.96);
        backdrop-filter: saturate(150%) blur(10px);
        -webkit-backdrop-filter: saturate(150%) blur(10px);
        border-bottom: 1px solid var(--c-line);
        max-height: 0; overflow: hidden;
        transition: max-height .3s ease;
    }
    .site-nav.open {
        max-height: 360px;
    }
    .site-nav a {
        padding: 1rem var(--gutter);
        border-top: 1px solid var(--c-line);
        font-size: 1rem;
    }
    .site-nav a::after { display: none; }
    .site-nav a:first-child { border-top: none; }
}

/* ========== Hero ========== */
.hero {
    position: relative; overflow: hidden;
    min-height: clamp(500px, 65vh, 650px);
    display: grid; align-items: center;
    background: linear-gradient(180deg, #ffffff 0%, var(--c-bg-soft) 100%);
    border-bottom: 1px solid var(--c-line);
}
#hero-canvas {
    position: absolute; inset: 0; width: 100%; height: 100%;
    pointer-events: none; opacity: 1;
    transition: opacity .4s ease;
}
.hero[data-anim="off"] #hero-canvas { opacity: 0; }

.hero-inner {
    position: relative; padding: clamp(2.25rem, 5.4vh, 3.6rem) var(--gutter);
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: clamp(1.5rem, 4vw, 3.5rem);
}
.hero-text { max-width: 44em; }
.hero-mark {
    flex-shrink: 0;
    line-height: 0;
}
.hero-mark img {
    width: clamp(200px, 23vw, 320px);
    height: auto;
    filter: drop-shadow(0 8px 24px rgba(111, 181, 204, 0.18));
    transition: transform .35s ease, filter .35s ease;
}
.hero-mark:hover img {
    transform: translateY(-4px) scale(1.02);
    filter: drop-shadow(0 14px 32px rgba(111, 181, 204, 0.26));
}
@media (max-width: 820px) {
    .hero-inner { grid-template-columns: 1fr; }
    .hero-mark { display: none; }
}
.hero h1 {
    margin: 0 0 1.75rem;
    font-family: var(--font-display);
    font-size: clamp(1.9rem, 4.3vw, 3.2rem);
    line-height: 1.35; letter-spacing: 0.005em; font-weight: 800;
}
.hero h1 .accent { color: var(--c-accent-strong); }
.lede {
    margin: 0 0 2.5rem;
    font-size: clamp(1.02rem, 1.4vw, 1.2rem);
    line-height: 2.0;
    color: var(--c-text-muted); max-width: 38em;
    text-wrap: pretty;
}
.hero-actions { display: flex; gap: .75rem; flex-wrap: wrap; margin-bottom: 0; }

.btn {
    display: inline-flex; align-items: center; gap: .5rem;
    padding: .55rem 1.4rem; border-radius: 999px;
    font-size: .95rem; font-weight: 500;
    transition: transform .15s ease, background .2s ease, border-color .2s ease, color .2s ease;
    border: 1px solid transparent;
}
.btn-primary {
    background: var(--c-text); color: #fff;
}
.btn-primary:hover { background: #000; transform: translateY(-1px); }
.btn-ghost {
    background: var(--c-bg); color: var(--c-text);
    border-color: var(--c-line-strong);
}
.btn-ghost:hover { border-color: var(--c-text); background: var(--c-bg-soft); }

/* ========== Sections ========== */
.section {
    padding: clamp(4rem, 9vw, 7rem) 0;
    border-bottom: 1px solid var(--c-line);
}
.section:nth-of-type(even) { background: var(--c-bg-soft); }
.section-inner { max-width: var(--maxw); }
.section-tag {
    margin: 0 0 1rem;
    font-family: var(--font-mono); font-size: .8rem; letter-spacing: .08em;
    color: var(--c-text-faint);
}
.section h2 {
    margin: 0 0 1.5rem;
    font-family: var(--font-display);
    font-size: clamp(1.7rem, 3.4vw, 2.6rem);
    line-height: 1.4; letter-spacing: 0.005em; font-weight: 800;
    max-width: 22em;
    text-wrap: balance;
}
.section-lede {
    margin: 0 0 2.5rem; max-width: 38em; color: var(--c-text-muted);
    font-size: 1.025rem; line-height: 1.95;
    text-wrap: pretty;
}
.section-quote {
    margin: 0; padding: 1.75rem 2rem;
    background: var(--c-bg); border: 1px solid var(--c-line);
    border-left: 3px solid var(--c-accent);
    border-radius: var(--radius);
    color: var(--c-text-muted); font-size: 1.05rem;
    max-width: 42em;
}
.quote-mark {
    color: var(--c-accent); font-family: 'Georgia', serif; font-size: 1.4em;
    line-height: 0; margin: 0 .15em;
}

/* ========== Cards (skills) ========== */
.cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
}
@media (max-width: 720px) {
    .cards { grid-template-columns: 1fr; }
}
.card {
    background: var(--c-bg);
    border: 1px solid var(--c-line);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-soft);
    border-color: var(--c-line-strong);
}
.card-art {
    aspect-ratio: 1 / 1;
    background: var(--c-surface);
    border-radius: var(--radius);
    margin-bottom: 1.25rem; overflow: hidden;
    display: grid; place-items: center;
}
.card-art img {
    width: 100%; height: 100%; object-fit: contain;
    padding: 1.5rem;
}
.card-title {
    margin: 0 0 .25rem; font-size: 1.15rem; font-weight: 600;
}
.card-en {
    margin: 0 0 .75rem;
    font-family: var(--font-mono); font-size: .78rem; letter-spacing: .04em;
    color: var(--c-text-faint);
}
.card-text { margin: 0 0 1rem; color: var(--c-text-muted); font-size: .95rem; }
.card-tags { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: .35rem; }
.card-tags li {
    font-family: var(--font-mono); font-size: .72rem; letter-spacing: .03em;
    padding: .2rem .55rem;
    background: var(--c-surface); border-radius: 4px;
    color: var(--c-text-muted);
}

/* ========== Members ========== */
.members {
    display: grid; gap: 1.5rem;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
}
.member {
    display: flex; flex-direction: column;
    padding: 1.75rem;
    background: var(--c-bg);
    border: 1px solid var(--c-line); border-radius: var(--radius-lg);
    transition: border-color .2s ease, box-shadow .2s ease;
}
.member:hover {
    border-color: var(--c-line-strong);
    box-shadow: var(--shadow-soft);
}
.member-head {
    display: flex; align-items: center; gap: 1.25rem;
    padding-bottom: 1.25rem;
    border-bottom: 1px solid var(--c-line);
    margin-bottom: 1.25rem;
}
.member-photo {
    flex-shrink: 0;
    width: 120px; height: 120px; border-radius: 50%;
    overflow: hidden;
    border: 2px solid var(--c-accent-soft);
    background: var(--c-surface);
    position: relative;
}
.member-photo img { width: 100%; height: 100%; object-fit: cover; }
.member-photo--placeholder {
    display: grid; place-items: center;
    background: linear-gradient(135deg, var(--c-accent-soft) 0%, var(--c-surface) 100%);
}
.member-initial {
    font-family: var(--font-display);
    font-size: 2.6rem; font-weight: 700; letter-spacing: -0.02em;
    color: var(--c-accent-strong);
    line-height: 1;
}

.member-summary {
    margin: 0 0 1.25rem;
    color: var(--c-text-muted);
    font-size: .95rem;
    line-height: 1.85;
    text-wrap: pretty;
}
/* Top の Members セクションから /member/ への導線 */
.section-more { margin: 2rem 0 0; }
.section-more-link {
    display: inline-flex; align-items: center; gap: .5rem;
    font-family: var(--font-mono); font-size: .85rem; letter-spacing: .04em;
    color: var(--c-accent-strong);
    border-bottom: 1px solid transparent;
    padding-bottom: 2px;
    transition: gap .2s ease, border-color .2s ease, color .2s ease;
}
.section-more-link:hover {
    color: var(--c-text);
    border-bottom-color: var(--c-accent);
    gap: .75rem;
}

/* /member/ ページのヘッダ */
.page-head {
    padding: clamp(3rem, 7vw, 5.5rem) 0 clamp(2rem, 4vw, 3rem);
    background: linear-gradient(180deg, #ffffff 0%, var(--c-bg-soft) 100%);
    border-bottom: 1px solid var(--c-line);
}
.page-head-inner { max-width: var(--maxw); padding: 0 var(--gutter); margin: 0 auto; }
.page-eyebrow {
    margin: 0 0 .75rem;
    font-family: var(--font-mono); font-size: .78rem; letter-spacing: .12em;
    color: var(--c-accent-strong); text-transform: uppercase;
}
.page-head h1 {
    margin: 0 0 1rem;
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3.4rem);
    line-height: 1.25; font-weight: 800; letter-spacing: -0.005em;
}
.page-lede {
    margin: 0; max-width: 38em;
    color: var(--c-text-muted);
    font-size: 1.02rem; line-height: 1.95;
    text-wrap: pretty;
}

.section-pageback { border-bottom: none; padding-top: clamp(2rem, 5vw, 3.5rem); padding-bottom: clamp(2rem, 5vw, 3.5rem); }
.page-back {
    display: inline-flex; align-items: center;
    font-family: var(--font-mono); font-size: .88rem; letter-spacing: .02em;
    color: var(--c-text-muted);
    transition: color .2s ease, transform .2s ease;
}
.page-back:hover { color: var(--c-text); transform: translateX(-2px); }
.member-headtext { min-width: 0; }
.member-role {
    margin: 0 0 .35rem;
    font-family: var(--font-mono); font-size: .72rem; letter-spacing: .08em;
    color: var(--c-accent-strong); text-transform: uppercase;
}
.member-name {
    margin: 0;
    font-family: var(--font-display);
    font-size: 1.3rem; font-weight: 700;
    display: flex; align-items: baseline; flex-wrap: wrap; gap: .6rem;
}
.member-name-en {
    font-family: var(--font-mono); font-weight: 400; font-size: .82rem;
    color: var(--c-text-faint);
    letter-spacing: .02em;
}
.member-concurrent {
    margin: .5rem 0 0;
    font-size: .82rem; line-height: 1.6;
    color: var(--c-text-muted);
}
.member-plus {
    display: inline-block;
    margin-right: .35rem;
    color: var(--c-accent-strong);
    font-weight: 700;
}

.member-timeline {
    list-style: none; margin: 0 0 1.25rem; padding: 0;
    display: grid; gap: .4rem;
}
.member-timeline li {
    display: grid; grid-template-columns: 56px 1fr; gap: 1rem;
    font-size: .88rem; line-height: 1.55;
    color: var(--c-text-muted);
}
.member-timeline time {
    font-family: var(--font-mono); font-size: .82rem;
    color: var(--c-text-faint);
    letter-spacing: .02em;
}

.member-tags { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: .35rem; }
.member-tags li {
    font-family: var(--font-mono); font-size: .7rem;
    padding: .2rem .55rem;
    background: var(--c-accent-soft); color: var(--c-accent-strong);
    border-radius: 4px;
}

/* ========== Projects ========== */
.project-list {
    list-style: none; margin: 0 auto; padding: 0;
    display: grid; grid-template-columns: 1fr;
    gap: 1rem;
    max-width: 780px;
}
.project {
    display: grid;
    grid-template-columns: 88px 1fr;
    gap: 1.5rem; align-items: start;
    padding: 1.5rem 1.75rem;
    background: var(--c-bg);
    border: 1px solid var(--c-line); border-radius: var(--radius-lg);
    transition: border-color .2s ease, box-shadow .2s ease;
}
.project:hover {
    border-color: var(--c-line-strong);
    box-shadow: var(--shadow-soft);
}
.project-thumb {
    width: 88px; height: 88px;
    background: var(--c-surface);
    border-radius: 12px;
    overflow: hidden;
    display: grid; place-items: center;
}
.project-thumb img { width: 100%; height: 100%; object-fit: contain; padding: .5rem; }
.project-body { min-width: 0; }
.project-meta {
    display: flex; align-items: center; gap: .75rem;
    margin-bottom: .4rem;
}
.project-status {
    align-self: flex-start;
    font-family: var(--font-mono); font-size: .7rem; letter-spacing: .05em;
    padding: .2rem .55rem; border-radius: 4px;
}
.status-live { background: var(--c-accent-soft); color: var(--c-accent-strong); }
.status-research { background: #f0eef9; color: #5e51a8; }
.status-beta { background: #fdf1e0; color: #a3700d; }
.status-idea { background: var(--c-surface); color: var(--c-text-muted); }
.project-year {
    font-family: var(--font-mono); font-size: .78rem; color: var(--c-text-faint);
}
.project-name { margin: 0 0 .4rem; font-size: 1.1rem; font-weight: 600; }
.project-text { margin: 0; color: var(--c-text-muted); font-size: .92rem; line-height: 1.8; }
@media (max-width: 640px) {
    .project { grid-template-columns: 1fr; gap: 1rem; padding: 1.25rem; }
    .project-thumb { width: 64px; height: 64px; }
}

/* ========== Contact / Company Info ========== */
.company-info {
    margin: 0 auto;
    background: var(--c-bg);
    border: 1px solid var(--c-line); border-radius: var(--radius-lg);
    overflow: hidden;
    max-width: 680px;
}
.company-row {
    display: grid; grid-template-columns: 140px 1fr;
    gap: 1.25rem;
    padding: .9rem 1.5rem;
    border-bottom: 1px solid var(--c-line);
}
.company-row:last-child { border-bottom: none; }
.company-row dt {
    margin: 0;
    font-family: var(--font-mono); font-size: .75rem; letter-spacing: .05em;
    color: var(--c-text-faint);
    line-height: 1.6;
}
.company-row dd {
    margin: 0;
    font-size: .96rem; line-height: 1.7;
    white-space: pre-line;
}
.company-row dd a {
    border-bottom: 1px solid transparent;
    transition: border-color .2s ease, color .2s ease;
}
.company-row dd a:hover { color: var(--c-accent-strong); border-bottom-color: var(--c-accent); }
@media (max-width: 600px) {
    .company-row { grid-template-columns: 1fr; gap: .25rem; padding: .85rem 1.1rem; }
}
.privacy-note {
    margin: 1.5rem auto 0;
    max-width: 680px;
    font-size: .82rem; line-height: 1.85;
    color: var(--c-text-faint);
}

/* ========== Footer ========== */
.site-footer {
    padding: 2rem 0;
    background: var(--c-bg);
    border-top: 1px solid var(--c-line);
}
.footer-inner {
    display: flex; align-items: center; justify-content: space-between;
    flex-wrap: wrap; gap: .5rem;
}
.footer-inner p { margin: 0; color: var(--c-text-muted); font-size: .85rem; }
.footer-inner a { color: var(--c-text-muted); border-bottom: 1px solid transparent; }
.footer-inner a:hover { color: var(--c-text); border-bottom-color: var(--c-accent); }

/* ========== Chat widget ========== */
.chat-widget {
    position: fixed; right: 20px; bottom: 20px; z-index: 100;
    font-family: var(--font-sans);
}
.chat-toggle {
    display: inline-flex; align-items: center; gap: .6rem;
    background: var(--c-text); color: #fff;
    border: none; border-radius: 999px;
    padding: .55rem 1.5rem;
    box-shadow: var(--shadow-pop);
    transition: transform .15s ease, background .2s ease;
    font-size: 1rem; font-weight: 500;
}
.chat-toggle:hover { transform: translateY(-1px); background: #000; }
.chat-toggle svg { width: 22px; height: 22px; }
/* 吹き出しの尖りを右下に向けるため水平反転 */
.chat-toggle .chat-toggle-icon { transform: scaleX(-1); }
.chat-toggle[aria-expanded="true"] { display: none; }

.chat-panel {
    position: absolute; right: 0; bottom: 0;
    width: min(380px, calc(100vw - 40px));
    height: min(560px, calc(100vh - 100px));
    background: var(--c-bg);
    border: 1px solid var(--c-line); border-radius: 16px;
    box-shadow: var(--shadow-pop);
    display: flex; flex-direction: column; overflow: hidden;
}
/* display: flex がデフォルト指定されているため、hidden 属性だけだと
   消えない。明示的に上書きする。 */
.chat-panel[hidden] { display: none !important; }
.chat-panel-head {
    display: flex; align-items: flex-start; justify-content: space-between;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--c-line);
    background: var(--c-bg-soft);
}
.chat-panel-head h2 { margin: 0; font-size: .95rem; font-weight: 600; }
.chat-close {
    background: transparent; border: none; color: var(--c-text-muted);
    font-size: 1.5rem; line-height: 1; padding: 0 .25rem;
}
.chat-close:hover { color: var(--c-text); }
.chat-log {
    flex: 1; overflow-y: auto; padding: 1rem 1.25rem;
    display: flex; flex-direction: column; gap: .75rem;
}
.chat-msg {
    max-width: 88%;
    padding: .7rem .9rem; border-radius: 12px;
    font-size: .9rem; line-height: 1.5;
    white-space: pre-wrap;
}
.chat-msg.user {
    align-self: flex-end;
    background: var(--c-text); color: #fff;
    border-bottom-right-radius: 4px;
}
.chat-msg.assistant {
    align-self: flex-start;
    background: var(--c-surface); color: var(--c-text);
    border-bottom-left-radius: 4px;
}
.chat-msg.error {
    align-self: flex-start;
    background: #fdecea; color: #a33; font-size: .85rem;
}
.chat-msg.loading {
    align-self: flex-start; background: var(--c-surface); color: var(--c-text-faint);
}
.chat-msg.loading::after {
    content: ''; display: inline-block; width: 1em;
    animation: dots 1.2s steps(4, end) infinite;
}
@keyframes dots {
    0% { content: ''; } 25% { content: '.'; } 50% { content: '..'; } 75% { content: '...'; }
}
.chat-form {
    display: flex; gap: .5rem; align-items: flex-end;
    padding: .75rem; border-top: 1px solid var(--c-line);
    background: var(--c-bg-soft);
}
.chat-form textarea {
    flex: 1; resize: none;
    border: 1px solid var(--c-line); border-radius: 10px;
    padding: .55rem .7rem; font: inherit; font-size: .9rem;
    background: var(--c-bg); color: var(--c-text);
}
.chat-form textarea:focus { outline: 2px solid var(--c-accent); outline-offset: 1px; }
.chat-send {
    flex-shrink: 0;
    width: 38px; height: 38px;
    border-radius: 50%; border: none;
    background: var(--c-accent); color: #fff;
    font-size: 1.1rem; font-weight: 700;
    display: grid; place-items: center;
    transition: background .2s ease;
}
.chat-send:hover { background: var(--c-accent-strong); }
.chat-send:disabled { background: var(--c-line-strong); cursor: not-allowed; }

/* ========== Mobile tweaks ========== */
@media (max-width: 600px) {
    .chat-widget { right: 12px; bottom: 12px; }
    .chat-panel { height: min(70vh, 540px); }
    .member { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
    html { scroll-behavior: auto; }
    #hero-canvas { opacity: 0 !important; }
}