/* ===== Happybreeding Start — design tokens (claude.com cream + coral) ===== */
:root {
    /* Brand */
    --color-primary: #cc785c;
    --color-primary-active: #a9583e;
    --color-primary-soft: rgba(204, 120, 92, 0.12);
    --color-accent-teal: #5db8a6;
    --color-accent-amber: #e8a55a;

    /* Surfaces */
    --color-canvas: #faf9f5;
    --color-surface-soft: #f5f0e8;
    --color-surface-card: #efe9de;
    --color-surface-cream-strong: #e8e0d2;
    --color-surface-dark: #181715;
    --color-surface-dark-elevated: #252320;
    --color-surface-dark-soft: #1f1e1b;

    /* Lines */
    --color-hairline: #e6dfd8;
    --color-hairline-soft: #ebe6df;

    /* Text */
    --color-ink: #141413;
    --color-body-strong: #252523;
    --color-body: #3d3d3a;
    --color-muted: #6c6a64;
    --color-muted-soft: #8e8b82;
    --color-on-primary: #ffffff;
    --color-on-dark: #faf9f5;
    --color-on-dark-soft: #a09d96;

    /* Radii */
    --r-xs: 4px;
    --r-sm: 6px;
    --r-md: 8px;
    --r-lg: 12px;
    --r-xl: 16px;
    --r-pill: 9999px;

    /* Spacing */
    --s-xxs: 4px;
    --s-xs: 8px;
    --s-sm: 12px;
    --s-md: 16px;
    --s-lg: 24px;
    --s-xl: 32px;
    --s-xxl: 48px;
    --s-section: 96px;

    /* Type */
    --font-display: 'Cormorant Garamond', 'EB Garamond', 'Tiempos Headline', Garamond, 'Times New Roman', serif;
    --font-body: Inter, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    --font-mono: 'JetBrains Mono', 'SFMono-Regular', Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
    background: var(--color-canvas);
    color: var(--color-ink);
    font-family: var(--font-body);
    font-weight: 400;
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 500; letter-spacing: -0.02em; margin: 0; }
h1 { font-size: 64px; line-height: 1.05; letter-spacing: -0.03em; }
h2 { font-size: 48px; line-height: 1.1; }
h3 { font-size: 28px; line-height: 1.2; }
p { margin: 0; color: var(--color-body); }
a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ===== Buttons ===== */
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    gap: 8px; height: 40px; padding: 0 20px; border-radius: var(--r-md);
    font-family: var(--font-body); font-size: 14px; font-weight: 500;
    border: 1px solid transparent; cursor: pointer; transition: background-color .15s ease, border-color .15s ease, color .15s ease;
    text-decoration: none;
}
.btn-primary { background: var(--color-primary); color: var(--color-on-primary); }
.btn-primary:hover { background: var(--color-primary-active); text-decoration: none; }
.btn-secondary { background: var(--color-canvas); color: var(--color-ink); border-color: var(--color-hairline); }
.btn-secondary:hover { background: var(--color-surface-soft); text-decoration: none; }
.btn-ghost { background: transparent; color: var(--color-ink); }
.btn-ghost:hover { background: var(--color-surface-soft); text-decoration: none; }
.btn-danger { background: transparent; color: #c64545; border-color: rgba(198,69,69,0.4); }
.btn-danger:hover { background: rgba(198,69,69,0.08); text-decoration: none; }

.badge {
    display: inline-flex; align-items: center; height: 22px; padding: 0 10px;
    border-radius: var(--r-pill); background: var(--color-surface-card); color: var(--color-ink);
    font-size: 12px; font-weight: 500;
}
.badge-coral { background: var(--color-primary); color: var(--color-on-primary); text-transform: uppercase; letter-spacing: 0.1em; }

/* ============================================================
   Main application shell — 3 column layout
   ============================================================ */
.app-shell {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 248px minmax(0, 1fr) 380px;
    gap: 24px;
    padding: 24px;
}

.brand-row {
    display: flex; align-items: center; gap: 10px;
    padding: 0 0 20px;
}
.brand-mark {
    width: 28px; height: 28px; display: inline-block;
    background: radial-gradient(circle at 50% 50%, var(--color-ink) 18%, transparent 19%) center/100% 100% no-repeat;
}
.brand-mark svg { width: 28px; height: 28px; display: block; }
.brand-logo {
    width: 36px; height: 36px;
    object-fit: contain;
    border-radius: 8px;
    flex-shrink: 0;
}
.brand-name {
    font-family: var(--font-display);
    font-size: 22px; line-height: 1.1;
    letter-spacing: -0.02em; color: var(--color-ink);
    font-weight: 500;
}

/* ----- Left column: menu ----- */
.col-left {
    position: sticky; top: 24px; align-self: start;
    height: calc(100vh - 48px);
    display: flex; flex-direction: column;
}
.menu-card {
    background: var(--color-surface-card);
    border-radius: var(--r-xl);
    padding: 14px;
    position: relative;
    flex: 0 0 auto;
}
.menu-list {
    position: relative;
    display: flex; flex-direction: column; gap: 4px;
    z-index: 1;
}
.menu-item {
    position: relative;
    display: flex; align-items: center; gap: 12px;
    height: 48px; padding: 0 16px;
    font-size: 15px; font-weight: 500; color: var(--color-body);
    border-radius: var(--r-md); cursor: pointer;
    background: transparent;
    border: none;
    text-align: left;
    transition: color .25s ease;
    z-index: 1;
    width: 100%;
}
.menu-item:hover { color: var(--color-ink); }
.menu-item .menu-icon { font-size: 18px; opacity: .8; }
.menu-item .menu-label { font-family: var(--font-body); }
.menu-item.is-active { color: var(--color-on-primary); }
.menu-item.is-active .menu-icon { opacity: 1; }

/* Bouncing pill indicator */
.menu-indicator {
    position: absolute;
    left: 0; right: 0;
    height: 48px;
    background: var(--color-primary);
    border-radius: var(--r-md);
    z-index: 0;
    transition: transform .55s cubic-bezier(.34, 1.56, .64, 1), opacity .25s ease;
    box-shadow: 0 6px 16px rgba(204,120,92,0.25);
    opacity: 0;
}
.menu-indicator.is-visible { opacity: 1; }

.menu-card .menu-footnote {
    margin-top: 14px;
    padding: 14px;
    border-top: 1px solid var(--color-hairline);
    color: var(--color-muted);
    font-size: 12px;
    line-height: 1.5;
}
.col-left .menu-bottom {
    margin-top: auto;
    display: flex; flex-direction: column; gap: 8px;
    color: var(--color-muted-soft); font-size: 12px;
    padding: 12px 4px 0;
}
.col-left .menu-bottom a { color: var(--color-muted); }

/* ----- Middle column: content ----- */
.col-middle {
    min-width: 0;
    height: calc(100vh - 48px);
    overflow: hidden;
    display: flex; flex-direction: column;
}
.middle-header {
    padding: 4px 4px 20px;
    display: flex; align-items: baseline; justify-content: space-between; gap: 12px;
    flex-wrap: wrap;
}

.greeting {
    padding: 0 4px 18px;
    display: flex; align-items: baseline; gap: 14px;
    flex-wrap: wrap;
    animation: greetIn .5s ease;
}
.greeting[hidden] { display: none; }
.greeting .greeting-icon {
    font-size: 26px;
    line-height: 1;
    transform: translateY(2px);
}
.greeting .greeting-name {
    font-family: var(--font-display);
    font-size: 32px;
    line-height: 1.15;
    letter-spacing: -0.02em;
    font-weight: 500;
    color: var(--color-ink);
}
.greeting .greeting-sep {
    color: var(--color-muted-soft);
    font-size: 22px;
    line-height: 1;
}
.greeting .greeting-text {
    font-family: var(--font-display);
    font-size: 22px;
    line-height: 1.3;
    letter-spacing: -0.01em;
    color: var(--color-body);
}
@keyframes greetIn {
    from { opacity: 0; transform: translateY(-4px); }
    to   { opacity: 1; transform: none; }
}
.middle-title {
    font-family: var(--font-display); font-size: 36px; letter-spacing: -0.02em; color: var(--color-ink);
}
.middle-sub { color: var(--color-muted); font-size: 14px; }
.middle-scroll {
    flex: 1; min-height: 0;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 4px 4px 80px;
    scrollbar-width: thin;
    scrollbar-color: var(--color-hairline) transparent;
}
.middle-scroll::-webkit-scrollbar { width: 8px; }
.middle-scroll::-webkit-scrollbar-thumb { background: var(--color-hairline); border-radius: 4px; }

/* Pane switch animation */
.pane { display: none; }
.pane.is-active {
    display: block;
    animation: paneIn .45s cubic-bezier(.34, 1.56, .64, 1);
}
@keyframes paneIn {
    0%   { opacity: 0; transform: scale(.96) translateY(8px); }
    60%  { opacity: 1; transform: scale(1.01) translateY(0); }
    100% { opacity: 1; transform: scale(1); }
}

/* Category container — wraps multiple heading+grid pairs in one pane */
.cat-container {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.cat-heading {
    margin: 36px 0 16px;
    padding: 0 4px;
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 500;
    line-height: 1.2;
    letter-spacing: -0.02em;
    color: var(--color-ink);
    display: flex; align-items: baseline; gap: 12px;
}
.cat-heading.is-first { margin-top: 4px; }
.cat-heading::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--color-hairline);
    margin-bottom: 6px;
}
.cat-heading-text { flex-shrink: 0; }
.cat-heading-count {
    flex-shrink: 0;
    color: var(--color-muted-soft);
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 400;
    letter-spacing: 0;
}

/* Card grids */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 16px;
}
.tile {
    background: var(--color-surface-card);
    border-radius: var(--r-lg);
    padding: 24px;
    display: flex; flex-direction: column; align-items: flex-start;
    gap: 12px; text-decoration: none; color: var(--color-ink);
    transition: transform .25s ease, background .25s ease;
    border: 1px solid transparent;
    min-height: 168px;
}
.tile:hover {
    background: var(--color-surface-cream-strong);
    transform: translateY(-2px);
    text-decoration: none;
}
.tile-icon {
    width: 44px; height: 44px;
    border-radius: var(--r-md);
    background: var(--color-canvas);
    display: flex; align-items: center; justify-content: center;
    font-size: 22px;
    overflow: hidden;
}
.tile-icon img { width: 28px; height: 28px; object-fit: contain; }
.tile-title {
    font-family: var(--font-display);
    font-size: 22px; letter-spacing: -0.02em;
    color: var(--color-ink); line-height: 1.2;
}
.tile-desc { font-size: 14px; color: var(--color-body); line-height: 1.55; }
.tile-foot {
    margin-top: auto; font-size: 13px; color: var(--color-primary); font-weight: 500;
    display: inline-flex; align-items: center; gap: 6px;
}

/* Article card (with cover) */
.article-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}
.article-card {
    display: flex; flex-direction: column;
    background: var(--color-surface-card);
    border-radius: var(--r-lg);
    overflow: hidden;
    text-decoration: none; color: var(--color-ink);
    transition: transform .25s ease, background .25s ease;
}
.article-card:hover { background: var(--color-surface-cream-strong); transform: translateY(-2px); text-decoration: none; }
.article-cover {
    aspect-ratio: 16/9;
    background: linear-gradient(135deg, var(--color-surface-cream-strong), var(--color-surface-card));
    background-size: cover; background-position: center;
}
.article-body {
    padding: 20px 24px 24px;
    display: flex; flex-direction: column; gap: 8px;
}
.article-title {
    font-family: var(--font-display); font-size: 22px; line-height: 1.25; letter-spacing: -0.02em;
}
.article-summary { color: var(--color-body); font-size: 14px; }

/* Announcement banners */
.announce-stack {
    display: flex; flex-direction: column;
    gap: 20px;
}
.announce-card {
    background: var(--color-surface-card);
    border-radius: var(--r-xl);
    padding: 32px 36px;
    position: relative;
    transition: transform .25s ease, background .25s ease;
}
.announce-card:hover { background: var(--color-surface-cream-strong); }
.announce-card::before {
    content: '';
    position: absolute;
    left: 36px; top: 28px; width: 36px; height: 3px;
    background: var(--color-primary);
    border-radius: 2px;
}
.announce-head {
    display: flex; align-items: baseline; justify-content: space-between; gap: 16px;
    margin: 16px 0 12px;
}
.announce-title {
    font-family: var(--font-display);
    font-size: 30px; line-height: 1.2; letter-spacing: -0.02em;
    color: var(--color-ink);
    font-weight: 500;
}
.announce-date {
    font-size: 12px; color: var(--color-muted-soft);
    font-family: var(--font-mono);
    letter-spacing: 0.04em;
    flex-shrink: 0;
}
.announce-body {
    color: var(--color-body-strong);
    font-size: 15px; line-height: 1.7;
}

/* ===== Markdown content — applies on cream surfaces ===== */
.md-content { line-height: 1.7; }
.md-content p { margin: 8px 0; }
.md-content p:first-child { margin-top: 0; }
.md-content p:last-child { margin-bottom: 0; }
.md-content h1, .md-content h2, .md-content h3, .md-content h4 {
    font-family: var(--font-display);
    font-weight: 500;
    letter-spacing: -0.02em;
    color: var(--color-ink);
    margin: 16px 0 8px;
}
.md-content h1 { font-size: 26px; }
.md-content h2 { font-size: 22px; }
.md-content h3 { font-size: 18px; }
.md-content h4 { font-size: 16px; }
.md-content a {
    color: var(--color-primary);
    text-decoration: underline;
    text-underline-offset: 3px;
}
.md-content a:hover { color: var(--color-primary-active); }
.md-content code {
    font-family: var(--font-mono);
    font-size: .92em;
    background: rgba(20, 20, 19, 0.06);
    padding: 2px 6px;
    border-radius: 4px;
}
.md-content pre {
    background: var(--color-surface-dark);
    color: var(--color-on-dark);
    padding: 16px 18px;
    border-radius: var(--r-md);
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: 13px;
    line-height: 1.6;
    margin: 12px 0;
}
.md-content pre code {
    background: transparent;
    padding: 0;
    font-size: inherit;
    color: inherit;
}
.md-content ul, .md-content ol {
    margin: 8px 0;
    padding-left: 24px;
}
.md-content li { margin: 4px 0; }
.md-content li > p { margin: 0; }
.md-content blockquote {
    margin: 12px 0;
    padding: 4px 16px;
    border-left: 3px solid var(--color-primary);
    color: var(--color-body);
    font-style: italic;
}
.md-content hr {
    border: 0;
    border-top: 1px solid var(--color-hairline);
    margin: 16px 0;
}
.md-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 12px 0;
    font-size: .95em;
}
.md-content th, .md-content td {
    border-bottom: 1px solid var(--color-hairline);
    padding: 8px;
    text-align: left;
}
.md-content img {
    max-width: 100%;
    border-radius: var(--r-md);
}

/* Empty state */
.empty {
    text-align: left;
    padding: 48px 16px;
    color: var(--color-muted);
}
.empty h3 { color: var(--color-ink); margin-bottom: 8px; }

/* ----- Right column: search + AI chat ----- */
.col-right {
    position: sticky; top: 24px; align-self: start;
    height: calc(100vh - 48px);
    display: flex; flex-direction: column;
    gap: 16px;
    min-height: 0;
}

/* Search card — cream surface, just tall enough for its content */
.search-card {
    flex: 0 0 auto;
    background: var(--color-surface-card);
    border-radius: var(--r-xl);
    padding: 16px 18px 14px;
    display: flex; flex-direction: column;
    gap: 10px;
}
.search-card-head {
    display: flex; align-items: center; gap: 8px;
    color: var(--color-ink);
    font-family: var(--font-display);
    font-size: 18px; line-height: 1.2;
    letter-spacing: -0.01em;
}
.search-form {
    display: flex; align-items: center; gap: 6px;
    background: var(--color-canvas);
    border: 1px solid var(--color-hairline);
    border-radius: var(--r-md);
    padding: 4px 4px 4px 10px;
    transition: border-color .15s ease, box-shadow .15s ease;
}
.search-form:focus-within {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(204, 120, 92, 0.15);
}
.search-input {
    flex: 1; min-width: 0;
    background: transparent; border: 0; outline: 0;
    color: var(--color-ink);
    font-family: var(--font-body);
    font-size: 14px;
    line-height: 1.4;
    padding: 4px 0;
}
.search-input::placeholder { color: var(--color-muted-soft); }
.search-submit {
    width: 28px; height: 28px;
    flex-shrink: 0;
    background: var(--color-primary);
    color: var(--color-on-primary);
    border: 0; border-radius: 6px;
    cursor: pointer;
    display: inline-flex; align-items: center; justify-content: center;
    transition: background-color .15s ease;
}
.search-submit:hover { background: var(--color-primary-active); }
.search-foot {
    font-size: 11px;
    color: var(--color-muted-soft);
    text-align: center;
}

/* Chat card — dark surface, fills the remaining height */
.chat-card {
    flex: 1 1 0;
    min-height: 0;
    background: var(--color-surface-dark);
    color: var(--color-on-dark);
    border-radius: var(--r-xl);
    display: flex; flex-direction: column;
    overflow: hidden;
}
.chat-head {
    padding: 18px 20px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    display: flex; align-items: center; gap: 10px;
}
.chat-head .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--color-accent-teal); box-shadow: 0 0 0 4px rgba(93,184,166,0.15); }
.chat-head .title { font-family: var(--font-display); font-size: 20px; letter-spacing: -0.01em; }
.chat-head .sub { margin-left: auto; font-size: 12px; color: var(--color-on-dark-soft); }

.chat-stream {
    flex: 1; min-height: 0; overflow-y: auto;
    padding: 16px 18px;
    display: flex; flex-direction: column; gap: 12px;
}
.chat-stream::-webkit-scrollbar { width: 6px; }
.chat-stream::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 3px; }

.msg {
    max-width: 92%;
    padding: 12px 14px;
    border-radius: var(--r-lg);
    font-size: 14px;
    line-height: 1.55;
    word-wrap: break-word;
    white-space: pre-wrap;
    animation: msgIn .25s ease;
}
@keyframes msgIn { from { opacity: 0; transform: translateY(6px);} to { opacity: 1; transform: none;} }
.msg-user {
    align-self: flex-end;
    background: var(--color-primary);
    color: var(--color-on-primary);
}
.msg-bot {
    align-self: flex-start;
    background: var(--color-surface-dark-elevated);
    color: var(--color-on-dark);
}
.msg-typing { font-style: italic; opacity: .7; }

/* Markdown inside a bot bubble — dark-surface overrides */
.msg-bot.md-content { white-space: normal; }
.msg-bot.md-content p { margin: 6px 0; color: var(--color-on-dark); }
.msg-bot.md-content p:first-child { margin-top: 0; }
.msg-bot.md-content p:last-child { margin-bottom: 0; }
.msg-bot.md-content h1,
.msg-bot.md-content h2,
.msg-bot.md-content h3,
.msg-bot.md-content h4 {
    color: var(--color-on-dark);
    font-family: var(--font-display);
    font-weight: 500;
    letter-spacing: -0.02em;
    margin: 10px 0 4px;
}
.msg-bot.md-content h1 { font-size: 20px; }
.msg-bot.md-content h2 { font-size: 18px; }
.msg-bot.md-content h3 { font-size: 16px; }
.msg-bot.md-content a {
    color: var(--color-accent-amber);
    text-decoration: underline;
    text-underline-offset: 3px;
    word-break: break-word;
}
.msg-bot.md-content a:hover { color: #f5b771; }
.msg-bot.md-content code {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-on-dark);
    font-family: var(--font-mono);
    font-size: .9em;
    padding: 2px 6px;
    border-radius: 4px;
}
.msg-bot.md-content pre {
    background: rgba(0, 0, 0, 0.35);
    color: var(--color-on-dark);
    padding: 12px 14px;
    border-radius: var(--r-md);
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: 13px;
    line-height: 1.6;
    margin: 8px 0;
}
.msg-bot.md-content pre code {
    background: transparent;
    padding: 0;
    font-size: inherit;
}
.msg-bot.md-content ul,
.msg-bot.md-content ol {
    margin: 6px 0;
    padding-left: 22px;
}
.msg-bot.md-content li { margin: 3px 0; }
.msg-bot.md-content li > p { margin: 0; }
.msg-bot.md-content blockquote {
    margin: 8px 0;
    padding: 2px 12px;
    border-left: 2px solid rgba(255, 255, 255, 0.25);
    color: var(--color-on-dark-soft);
    font-style: italic;
}
.msg-bot.md-content hr {
    border: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    margin: 10px 0;
}
.msg-bot.md-content table { width: 100%; border-collapse: collapse; margin: 8px 0; font-size: 13px; }
.msg-bot.md-content th,
.msg-bot.md-content td {
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: 6px 8px;
    text-align: left;
}
.msg-bot.md-content img { max-width: 100%; border-radius: var(--r-md); }

.chat-foot {
    padding: 12px;
    border-top: 1px solid rgba(255,255,255,0.06);
    background: var(--color-surface-dark-soft);
}
.chat-input-wrap {
    display: flex; align-items: flex-end; gap: 8px;
    background: var(--color-surface-dark-elevated);
    border-radius: var(--r-lg);
    padding: 8px 8px 8px 14px;
}
.chat-input {
    flex: 1;
    background: transparent;
    border: 0; outline: 0; resize: none;
    color: var(--color-on-dark);
    font-family: var(--font-body); font-size: 14px;
    line-height: 1.5;
    max-height: 160px; min-height: 24px;
    padding: 6px 0;
}
.chat-input::placeholder { color: var(--color-on-dark-soft); }
.chat-send {
    width: 36px; height: 36px;
    background: var(--color-primary);
    color: var(--color-on-primary);
    border: 0; border-radius: var(--r-md);
    cursor: pointer; flex: 0 0 36px;
    display: inline-flex; align-items: center; justify-content: center;
}
.chat-send:hover { background: var(--color-primary-active); }
.chat-send:disabled { opacity: .4; cursor: not-allowed; }

.chat-hint {
    margin-top: 8px;
    font-size: 11px;
    color: var(--color-on-dark-soft);
    text-align: center;
}

/* ============================================================
   Article reader page
   ============================================================ */
.reader {
    max-width: 760px;
    margin: 0 auto;
    padding: 80px 24px 120px;
}
.reader .back-link {
    color: var(--color-muted);
    font-size: 14px;
    display: inline-flex; align-items: center; gap: 4px;
    margin-bottom: 24px;
}
.reader .reader-cover {
    width: 100%;
    aspect-ratio: 16/9;
    border-radius: var(--r-lg);
    background-size: cover; background-position: center;
    background-color: var(--color-surface-card);
    margin-bottom: 32px;
}
.reader h1.reader-title {
    font-size: 48px; line-height: 1.1; letter-spacing: -0.03em;
    margin-bottom: 12px;
}
.reader .reader-meta { color: var(--color-muted); font-size: 14px; margin-bottom: 40px; }
.reader-body { font-size: 17px; line-height: 1.75; color: var(--color-body-strong); }
.reader-body h1, .reader-body h2, .reader-body h3, .reader-body h4 {
    margin: 32px 0 12px;
    font-family: var(--font-display); font-weight: 500;
    color: var(--color-ink); letter-spacing: -0.02em;
}
.reader-body h1 { font-size: 36px; }
.reader-body h2 { font-size: 28px; }
.reader-body h3 { font-size: 22px; }
.reader-body p { margin: 12px 0; }
.reader-body a { color: var(--color-primary); text-decoration: underline; text-underline-offset: 3px; }
.reader-body code {
    font-family: var(--font-mono); font-size: 14px;
    background: var(--color-surface-card); padding: 2px 6px; border-radius: 4px;
}
.reader-body pre {
    background: var(--color-surface-dark); color: var(--color-on-dark);
    padding: 20px; border-radius: var(--r-lg);
    overflow-x: auto; font-family: var(--font-mono); font-size: 14px; line-height: 1.6;
    margin: 16px 0;
}
.reader-body pre code { background: transparent; padding: 0; color: inherit; }
.reader-body blockquote {
    margin: 16px 0; padding: 4px 20px;
    border-left: 3px solid var(--color-primary);
    color: var(--color-body); font-style: italic;
}
.reader-body table {
    width: 100%; border-collapse: collapse; margin: 16px 0;
}
.reader-body th, .reader-body td {
    border-bottom: 1px solid var(--color-hairline); padding: 10px 8px; text-align: left;
}
.reader-body img { max-width: 100%; border-radius: var(--r-md); }
.reader-body ul, .reader-body ol { margin: 12px 0; padding-left: 24px; }
.reader-body li { margin: 4px 0; }

/* ============================================================
   Auth — pill in left sidebar + verification modal + locked states
   ============================================================ */

/* Status pill in the left column */
.auth-pill {
    margin-top: 14px;
    padding: 12px 14px;
    border-radius: var(--r-lg);
    background: var(--color-surface-card);
    display: flex; flex-direction: column; gap: 8px;
    transition: background .2s ease;
}
.auth-pill.is-unverified {
    background: var(--color-primary);
    color: var(--color-on-primary);
}
.auth-pill.is-unverified .auth-pill-cta {
    background: var(--color-on-primary);
    color: var(--color-primary-active);
    border: 0;
    padding: 8px 14px; height: 36px;
    border-radius: var(--r-md);
    font-family: var(--font-body); font-size: 13px; font-weight: 500;
    cursor: pointer;
}
.auth-pill.is-unverified .auth-pill-cta:hover { background: var(--color-canvas); }
.auth-pill.is-unverified .auth-pill-hint {
    font-size: 11px; color: rgba(255,255,255,0.78); text-align: center;
    letter-spacing: 0.04em;
}
.auth-pill.is-verified {
    flex-direction: row; align-items: center; gap: 10px;
    background: var(--color-surface-card);
}
.auth-pill-dot {
    width: 8px; height: 8px; border-radius: 50%;
    background: var(--color-accent-teal);
    box-shadow: 0 0 0 4px rgba(93,184,166,0.18);
    flex: 0 0 8px;
}
.auth-pill-name {
    flex: 1; font-size: 14px; font-weight: 500; color: var(--color-ink);
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.auth-pill-logout {
    background: transparent; border: 0; color: var(--color-muted);
    font-size: 12px; cursor: pointer; padding: 4px 6px;
}
.auth-pill-logout:hover { color: var(--color-ink); }

/* Locked tiles (when body.is-unverified) */
body.is-unverified .tile.gated,
body.is-unverified .article-card.gated {
    cursor: not-allowed;
    position: relative;
}
body.is-unverified .tile.gated::after,
body.is-unverified .article-card.gated::after {
    content: '🔒 验证后可用';
    position: absolute; top: 12px; right: 12px;
    background: rgba(20, 20, 19, 0.78);
    color: var(--color-on-dark);
    padding: 4px 10px; border-radius: var(--r-pill);
    font-size: 11px; letter-spacing: 0.04em;
    pointer-events: none;
}
body.is-unverified .tile.gated:hover,
body.is-unverified .article-card.gated:hover {
    transform: none;
    background: var(--color-surface-card);
}

/* Chat input locked look */
body.is-unverified .chat-input-wrap {
    opacity: 0.55;
}

/* ===== Verification modal ===== */
.auth-modal {
    position: fixed; inset: 0; z-index: 1000;
    display: flex; align-items: center; justify-content: center;
}
.auth-modal[hidden] { display: none; }
.auth-backdrop {
    position: absolute; inset: 0;
    background: rgba(20, 20, 19, 0.55);
    backdrop-filter: blur(4px);
    animation: authFade .25s ease;
}
@keyframes authFade { from { opacity: 0; } to { opacity: 1; } }

.auth-card {
    position: relative;
    width: min(440px, calc(100vw - 32px));
    background: var(--color-canvas);
    border-radius: var(--r-xl);
    padding: 40px 36px 32px;
    z-index: 1;
    box-shadow: 0 20px 60px rgba(20,20,19,0.25);
    animation: authPop .35s cubic-bezier(.34, 1.56, .64, 1);
}
@keyframes authPop {
    from { opacity: 0; transform: translateY(12px) scale(.96); }
    to   { opacity: 1; transform: none; }
}

.auth-close {
    position: absolute; top: 14px; right: 14px;
    width: 32px; height: 32px; border-radius: 50%;
    background: transparent; border: 0;
    color: var(--color-muted);
    font-size: 22px; line-height: 1; cursor: pointer;
}
.auth-close:hover { background: var(--color-surface-card); color: var(--color-ink); }

.auth-title {
    font-family: var(--font-display);
    font-size: 30px; line-height: 1.2; letter-spacing: -0.02em;
    color: var(--color-ink); font-weight: 500;
    margin-bottom: 8px;
}
.auth-sub {
    color: var(--color-muted); font-size: 14px; line-height: 1.6;
    margin-bottom: 24px;
}
.auth-label {
    display: block; font-size: 13px; color: var(--color-body);
    font-weight: 500; margin-bottom: 8px;
}
.auth-mute {
    color: var(--color-muted-soft); font-weight: 400;
    margin-left: 4px;
}
.auth-input {
    width: 100%;
    height: 44px; padding: 0 14px;
    border: 1px solid var(--color-hairline);
    border-radius: var(--r-md);
    background: var(--color-canvas); color: var(--color-ink);
    font-family: var(--font-body); font-size: 16px;
    outline: 0;
    margin-bottom: 14px;
    transition: border-color .15s ease, box-shadow .15s ease;
}
.auth-input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(204,120,92,0.15);
}
.auth-action {
    width: 100%;
    height: 44px;
}
.auth-actions-row {
    display: flex; gap: 8px;
}
.auth-actions-row .auth-action { flex: 1; }
.auth-actions-row .btn-ghost {
    flex: 0 0 auto; height: 44px;
    color: var(--color-muted);
    font-size: 13px;
}
.auth-actions-row .btn-ghost:disabled {
    opacity: .5; cursor: not-allowed;
}
.auth-msg {
    margin-top: 8px;
    min-height: 18px;
    font-size: 13px;
    color: var(--color-muted);
}
.auth-msg.is-err { color: #c64545; }
.auth-msg.is-ok  { color: #4a8d5e; }
.auth-msg.is-warn { color: var(--color-primary); }

/* ============================================================
   Submit-for-inclusion button + modal
   ============================================================ */
.submit-btn {
    display: inline-flex; align-items: center; gap: 6px;
    align-self: flex-start;
    background: transparent;
    border: 1px solid var(--color-hairline);
    color: var(--color-body);
    font-family: var(--font-body);
    font-size: 12px;
    padding: 6px 12px;
    border-radius: var(--r-pill);
    cursor: pointer;
    transition: border-color .15s ease, color .15s ease, background-color .15s ease;
    margin-bottom: 6px;
}
.submit-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: rgba(204, 120, 92, 0.06);
}
.submit-btn svg { opacity: .8; }

.modal {
    position: fixed; inset: 0;
    z-index: 1000;
    display: flex; align-items: center; justify-content: center;
    padding: 24px;
    animation: modalFade .2s ease;
}
.modal[hidden] { display: none; }
.modal-backdrop {
    position: absolute; inset: 0;
    background: rgba(20, 20, 19, 0.55);
    backdrop-filter: blur(2px);
}
.modal-card {
    position: relative; z-index: 1;
    background: var(--color-canvas);
    border-radius: var(--r-xl);
    padding: 36px 36px 28px;
    width: 100%; max-width: 480px;
    max-height: calc(100vh - 48px);
    overflow-y: auto;
    box-shadow: 0 30px 80px rgba(20,20,19,0.25);
    animation: modalIn .25s cubic-bezier(.34,1.56,.64,1);
}
.modal-close {
    position: absolute; top: 14px; right: 14px;
    width: 32px; height: 32px;
    border: 0; background: transparent;
    color: var(--color-muted);
    font-size: 22px; line-height: 1;
    cursor: pointer; border-radius: 6px;
}
.modal-close:hover { background: var(--color-surface-card); color: var(--color-ink); }
.modal-title {
    font-family: var(--font-display);
    font-size: 30px; line-height: 1.15; letter-spacing: -0.02em;
    color: var(--color-ink); font-weight: 500;
    margin: 0 0 6px;
}
.modal-sub {
    color: var(--color-muted);
    font-size: 14px; line-height: 1.55;
    margin: 0 0 22px;
}
@keyframes modalFade {
    from { opacity: 0; } to { opacity: 1; }
}
@keyframes modalIn {
    0%   { opacity: 0; transform: scale(.96) translateY(8px); }
    60%  { opacity: 1; transform: scale(1.01) translateY(0); }
    100% { opacity: 1; transform: scale(1); }
}

.submit-card .submit-type-row {
    display: flex; gap: 8px;
    margin-bottom: 18px;
}
.submit-type {
    flex: 1;
    cursor: pointer;
}
.submit-type input { position: absolute; opacity: 0; pointer-events: none; }
.submit-type span {
    display: block;
    text-align: center;
    padding: 10px 8px;
    border-radius: var(--r-md);
    background: var(--color-surface-card);
    color: var(--color-body);
    font-size: 14px; font-weight: 500;
    border: 1px solid transparent;
    transition: background .15s ease, color .15s ease, border-color .15s ease;
}
.submit-type input:checked + span {
    background: var(--color-primary);
    color: var(--color-on-primary);
    border-color: var(--color-primary);
}
.submit-type:hover span { border-color: var(--color-primary); }

.submit-field {
    margin-bottom: 14px;
    display: flex; flex-direction: column; gap: 6px;
}
.submit-field label {
    font-size: 12px;
    color: var(--color-muted);
    font-weight: 500;
}
.submit-field label .muted {
    color: var(--color-muted-soft);
    font-weight: 400;
    margin-left: 4px;
}
.submit-field input[type="text"],
.submit-field input[type="url"],
.submit-field textarea {
    background: var(--color-canvas);
    color: var(--color-ink);
    font: 14px var(--font-body);
    border: 1px solid var(--color-hairline);
    border-radius: var(--r-md);
    padding: 10px 12px;
    outline: 0;
    transition: border-color .15s ease, box-shadow .15s ease;
}
.submit-field input[type="text"]:focus,
.submit-field input[type="url"]:focus,
.submit-field textarea:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(204, 120, 92, 0.15);
}
.submit-field textarea { resize: vertical; min-height: 70px; }
.submit-field input[type="file"] {
    font: 13px var(--font-body);
    color: var(--color-body);
    padding: 6px 0;
}
.submit-field input[type="file"]::file-selector-button {
    background: var(--color-surface-card);
    color: var(--color-ink);
    border: 1px solid var(--color-hairline);
    border-radius: var(--r-sm);
    padding: 6px 12px;
    font: 13px var(--font-body);
    margin-right: 10px;
    cursor: pointer;
}
.submit-field input[type="file"]::file-selector-button:hover {
    border-color: var(--color-primary);
}

.submit-msg {
    padding: 8px 12px;
    border-radius: var(--r-sm);
    background: var(--color-surface-card);
    font-size: 13px;
    margin-bottom: 12px;
}

.submit-actions {
    display: flex; justify-content: flex-end; gap: 8px;
    margin-top: 18px;
}

/* ============================================================
   Flash messages
   ============================================================ */
.flash-wrap { position: fixed; top: 20px; right: 20px; z-index: 9999; display: flex; flex-direction: column; gap: 8px; }
.flash {
    padding: 12px 16px; border-radius: var(--r-md);
    background: var(--color-ink); color: var(--color-on-dark);
    font-size: 14px; box-shadow: 0 8px 24px rgba(0,0,0,0.15);
    animation: flashIn .25s ease;
}
.flash.error { background: #c64545; }
.flash.ok { background: #4a8d5e; }
@keyframes flashIn { from { transform: translateX(20px); opacity: 0; } to { transform: none; opacity: 1; } }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 1200px) {
    .app-shell { grid-template-columns: 220px minmax(0, 1fr) 340px; }
}
@media (max-width: 980px) {
    .app-shell { grid-template-columns: 1fr; padding: 16px; gap: 16px; }
    .col-left, .col-right { position: relative; top: 0; height: auto; }
    .col-middle { height: auto; }
    .middle-scroll { padding-bottom: 24px; }
    .search-card { flex: none; min-height: 0; }
    .chat-card { flex: none; height: 480px; }
}