/* ============================================================
   每日新闻 — BASE (layout + structure + components)
   Theme-agnostic. Visual skins live in themes.css ([data-style]).
   Default tokens below describe Style A (Editorial Magazine).
   ============================================================ */

:root {
    /* fonts */
    --font-display: 'Noto Serif SC', Georgia, serif;
    --font-body: 'Noto Sans SC', -apple-system, 'Segoe UI', sans-serif;
    --font-label: 'Space Grotesk', 'Noto Sans SC', sans-serif;

    /* surfaces */
    --bg-page: #f3efe6;
    --bg-card: #fffdf8;
    --bg-rail: #f3efe6;
    --bg-sunken: #eae4d6;
    --bg-tint: rgba(0,0,0,.025);

    /* ink */
    --ink-strong: #1c1a16;
    --ink: #34302a;
    --ink-soft: #6b6459;
    --ink-faint: #9a9183;
    --on-accent: #ffffff;

    /* lines */
    --line: #e2dac9;
    --line-strong: #d2c8b2;

    /* primary accent (tweakable) */
    --accent: #b5341f;
    --accent-ink: #8f2716;

    /* category palette (tweakable set) */
    --cat-coding: #2f5fd0;
    --cat-design: #c0306f;
    --cat-game:   #7b3fcf;
    --cat-music:  #0f8a6a;
    --cat-viral:  #d97706;

    /* tag/importance palette */
    --tag-breaking: #c62828;
    --tag-update:   #2f5fd0;
    --tag-insight:  #7b3fcf;
    --tag-pipeline: #c2710c;

    /* geometry */
    --radius: 4px;
    --radius-lg: 6px;
    --rail-w: 268px;
    --maxw: 1720px;
    --gut: 28px;

    --shadow-card: none;
    --shadow-hero: none;
}

* , *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.7;
    color: var(--ink);
    background: var(--bg-page);
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
}
::selection { background: var(--accent); color: #fff; }
a { color: inherit; }
button { font-family: inherit; cursor: pointer; }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--line-strong); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--ink-faint); }

/* ============================================================
   TOP BAR
   ============================================================ */
.topbar {
    position: sticky; top: 0; z-index: 50;
    background: color-mix(in srgb, var(--bg-page) 88%, transparent);
    backdrop-filter: saturate(1.4) blur(14px);
    border-bottom: 1px solid var(--line);
}
.topbar-inner {
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 0 var(--gut);
    height: 68px;
    display: flex; align-items: center; gap: 22px;
}
.brand { display: flex; align-items: baseline; gap: 12px; flex-shrink: 0; }
.brand .logo {
    font-family: var(--font-display);
    font-size: 1.5rem; font-weight: 700;
    letter-spacing: -.01em; color: var(--ink-strong);
    line-height: 1;
}
.brand .logo .accent-dot { color: var(--accent); }
.brand .tagline {
    font-family: var(--font-label);
    font-size: .64rem; font-weight: 600;
    letter-spacing: .22em; text-transform: uppercase;
    color: var(--ink-faint);
    white-space: nowrap;
}

.topbar-spacer { flex: 1; }

/* search */
.search-wrap {
    position: relative;
    display: flex; align-items: center;
    width: clamp(180px, 26vw, 360px);
}
.search-wrap svg { position: absolute; left: 12px; color: var(--ink-faint); pointer-events: none; }
.search-input {
    width: 100%;
    font-family: var(--font-body); font-size: .86rem;
    color: var(--ink);
    background: var(--bg-card);
    border: 1px solid var(--line-strong);
    border-radius: 999px;
    padding: 9px 34px 9px 36px;
    transition: border-color .18s, box-shadow .18s;
}
.search-input::placeholder { color: var(--ink-faint); }
.search-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 16%, transparent);
}
.search-clear {
    position: absolute; right: 8px;
    width: 22px; height: 22px; border-radius: 50%;
    border: none; background: var(--bg-sunken); color: var(--ink-soft);
    display: none; align-items: center; justify-content: center;
    font-size: 13px; line-height: 1;
}
.search-wrap.has-value .search-clear { display: flex; }

/* icon buttons */
.icon-btn {
    height: 38px; padding: 0 14px;
    display: inline-flex; align-items: center; gap: 7px;
    border-radius: 999px;
    border: 1px solid var(--line-strong);
    background: var(--bg-card);
    color: var(--ink-soft);
    font-family: var(--font-label); font-size: .76rem; font-weight: 600;
    letter-spacing: .02em;
    transition: all .16s;
    white-space: nowrap;
}
.icon-btn:hover { color: var(--ink-strong); border-color: var(--ink-faint); }
.icon-btn.active { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.icon-btn .fav-count {
    font-family: var(--font-label); font-size: .68rem;
    background: var(--bg-sunken); color: var(--ink-soft);
    border-radius: 999px; padding: 1px 7px; font-weight: 700;
}
.icon-btn.active .fav-count { background: rgba(255,255,255,.25); color: #fff; }

/* style switcher (segmented) */
.style-switch {
    display: inline-flex; align-items: center;
    background: var(--bg-sunken);
    border-radius: 999px; padding: 3px;
    gap: 2px;
}
.style-switch button {
    border: none; background: transparent;
    color: var(--ink-soft);
    font-family: var(--font-label); font-size: .72rem; font-weight: 600;
    padding: 6px 13px; border-radius: 999px;
    transition: all .16s;
    white-space: nowrap;
}
.style-switch button:hover { color: var(--ink-strong); }
.style-switch button.active {
    background: var(--bg-card); color: var(--ink-strong);
    box-shadow: 0 1px 3px rgba(0,0,0,.1);
}

/* palette popover */
.palette-wrap { position: relative; }
.palette-pop {
    position: absolute; top: calc(100% + 10px); right: 0;
    width: 230px; padding: 16px;
    background: var(--bg-card);
    border: 1px solid var(--line-strong);
    border-radius: var(--radius-lg);
    box-shadow: 0 12px 40px -10px rgba(0,0,0,.28);
    z-index: 80;
    opacity: 0; visibility: hidden; transform: translateY(-6px);
    transition: opacity .18s, transform .18s, visibility .18s;
}
.palette-pop.open { opacity: 1; visibility: visible; transform: translateY(0); }
.pop-section + .pop-section { margin-top: 16px; }
.pop-label {
    font-family: var(--font-label); font-size: .62rem; font-weight: 700;
    letter-spacing: .14em; text-transform: uppercase; color: var(--ink-faint);
    margin-bottom: 10px;
}
.pop-swatches { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.acc-swatch {
    width: 26px; height: 26px; border-radius: 50%;
    border: 2px solid transparent; box-shadow: 0 0 0 1px var(--line-strong);
    transition: transform .14s;
}
.acc-swatch:hover { transform: scale(1.12); }
.acc-swatch.on { border-color: var(--bg-card); box-shadow: 0 0 0 2px var(--ink-strong); }
.acc-reset {
    font-family: var(--font-label); font-size: .68rem; font-weight: 600;
    color: var(--ink-soft); background: var(--bg-sunken);
    border: 1px solid var(--line-strong); border-radius: 999px; padding: 5px 11px;
}
.acc-reset:hover { color: var(--ink-strong); }
.pop-palettes { display: grid; grid-template-columns: 1fr 1fr; gap: 7px; }
.pal-opt {
    font-family: var(--font-body); font-size: .76rem; font-weight: 600;
    color: var(--ink-soft); background: var(--bg-sunken);
    border: 1px solid var(--line-strong); border-radius: var(--radius); padding: 7px;
    transition: all .14s;
}
.pal-opt:hover { color: var(--ink-strong); border-color: var(--ink-faint); }
.pal-opt.on { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.body code { font-family: var(--font-label); font-size: .92em; background: var(--bg-sunken); padding: 0 4px; border-radius: 3px; }
.src-hint code { font-family: var(--font-label); font-size: .92em; background: var(--bg-sunken); padding: 0 4px; border-radius: 3px; }

/* ============================================================
   SHELL
   ============================================================ */
.shell {
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 0 var(--gut);
    display: grid;
    grid-template-columns: var(--rail-w) 1fr;
    gap: 48px;
    align-items: start;
}

/* ============================================================
   LEFT RAIL
   ============================================================ */
.rail {
    position: sticky; top: 68px;
    align-self: start;
    padding: 30px 0 60px;
    max-height: calc(100vh - 68px);
    overflow-y: auto;
    overflow-x: hidden;
}
.rail::-webkit-scrollbar { width: 5px; }
.rail-block { margin-bottom: 30px; }
.rail-label {
    font-family: var(--font-label);
    font-size: .64rem; font-weight: 700;
    letter-spacing: .18em; text-transform: uppercase;
    color: var(--ink-faint);
    margin-bottom: 13px;
    display: flex; align-items: center; gap: 8px;
}
.rail-label::after { content: ''; flex: 1; height: 1px; background: var(--line); }

/* calendar */
.cal-head {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 10px;
}
.cal-month {
    font-family: var(--font-display); font-weight: 700;
    font-size: 1rem; color: var(--ink-strong);
}
.cal-nav { display: flex; gap: 4px; }
.cal-nav button {
    width: 28px; height: 28px; border-radius: var(--radius);
    border: 1px solid var(--line); background: var(--bg-card);
    color: var(--ink-soft); display: flex; align-items: center; justify-content: center;
    font-size: 13px; transition: all .15s;
}
.cal-nav button:hover { color: var(--ink-strong); border-color: var(--ink-faint); }
.cal-weekdays {
    display: grid; grid-template-columns: repeat(7,1fr);
    margin-bottom: 4px;
}
.cal-weekdays span {
    text-align: center; font-family: var(--font-label);
    font-size: .58rem; font-weight: 700; color: var(--ink-faint);
}
.cal-grid { display: grid; grid-template-columns: repeat(7,1fr); gap: 2px; }
.cal-cell {
    aspect-ratio: 1; display: flex; align-items: center; justify-content: center;
    font-family: var(--font-label); font-size: .78rem; font-weight: 500;
    border-radius: var(--radius); color: var(--ink-soft);
    position: relative; transition: all .14s;
}
.cal-cell.muted { color: var(--ink-faint); opacity: .35; }
.cal-cell.has-news { cursor: pointer; color: var(--ink-strong); font-weight: 600; }
.cal-cell.has-news::after {
    content: ''; position: absolute; bottom: 4px;
    width: 4px; height: 4px; border-radius: 50%; background: var(--accent);
}
.cal-cell.has-news:hover { background: var(--bg-sunken); }
.cal-cell.selected {
    background: var(--accent); color: var(--on-accent) !important; font-weight: 700;
}
.cal-cell.selected::after { background: var(--on-accent); }
.cal-cell.today:not(.selected) { box-shadow: inset 0 0 0 1.5px var(--accent); color: var(--ink-strong); }

/* category nav */
.catnav { display: flex; flex-direction: column; gap: 3px; }
.catnav-btn {
    display: flex; align-items: center; gap: 11px;
    width: 100%; text-align: left;
    padding: 9px 11px; border-radius: var(--radius);
    border: 1px solid transparent; background: transparent;
    color: var(--ink-soft);
    font-family: var(--font-body); font-size: .9rem; font-weight: 500;
    transition: all .15s;
}
.catnav-btn:hover { background: var(--bg-sunken); color: var(--ink-strong); }
.catnav-btn .swatch {
    width: 9px; height: 9px; border-radius: 3px; flex-shrink: 0;
    background: var(--cat-color, var(--ink-faint));
}
.catnav-btn .cn-name { flex: 1; }
.catnav-btn .cn-count {
    font-family: var(--font-label); font-size: .68rem; font-weight: 700;
    color: var(--ink-faint);
}
.catnav-btn.active {
    background: color-mix(in srgb, var(--cat-color) 12%, transparent);
    color: var(--ink-strong); font-weight: 700;
    border-color: color-mix(in srgb, var(--cat-color) 30%, transparent);
}
.catnav-btn.active .cn-count { color: var(--cat-color); }
.catnav-btn[data-cat="coding"] { --cat-color: var(--cat-coding); }
.catnav-btn[data-cat="design"] { --cat-color: var(--cat-design); }
.catnav-btn[data-cat="game"]   { --cat-color: var(--cat-game); }
.catnav-btn[data-cat="music"]  { --cat-color: var(--cat-music); }
.catnav-btn[data-cat="viral"]  { --cat-color: var(--cat-viral); }

.rail-note {
    font-size: .72rem; color: var(--ink-faint); line-height: 1.6;
}

/* ============================================================
   MAIN
   ============================================================ */
.main { padding: 30px 0 80px; min-width: 0; }

/* context header */
.context-head {
    display: flex; align-items: flex-end; justify-content: space-between;
    gap: 20px; flex-wrap: wrap;
    margin-bottom: 28px; padding-bottom: 20px;
    border-bottom: 2px solid var(--ink-strong);
}
.context-head .ch-title {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 3.4vw, 2.9rem); font-weight: 700;
    letter-spacing: -.02em; color: var(--ink-strong); line-height: 1.05;
}
.context-head .ch-sub {
    font-family: var(--font-label); font-size: .76rem; font-weight: 600;
    letter-spacing: .12em; text-transform: uppercase; color: var(--ink-soft);
    margin-bottom: 6px;
}
.context-head .ch-meta {
    font-family: var(--font-label); font-size: .8rem; font-weight: 600;
    color: var(--ink-soft); text-align: right;
}
.back-link {
    display: inline-flex; align-items: center; gap: 6px;
    font-family: var(--font-label); font-size: .76rem; font-weight: 600;
    color: var(--accent); background: none; border: none; margin-bottom: 6px;
}
.back-link:hover { text-decoration: underline; }

/* ============================================================
   HERO BAND (breaking / 重磅)
   ============================================================ */
/* ============================================================
   HERO ZONE — one dominant feature + secondary rail (asymmetric)
   ============================================================ */
.hero-zone {
    display: grid;
    grid-template-columns: minmax(0, 1.52fr) minmax(0, 1fr);
    gap: var(--gut);
    align-items: stretch;
    margin-bottom: 50px;
}
/* feature (特写) fills the frame; footer anchors to the bottom so the
   extra breathing room between content and source reads as intentional 留白 */
.hero-zone:not(.solo) > .hero-card .card-foot { margin-top: auto; }
.hero-zone.solo { grid-template-columns: 1fr; max-width: 1000px; }
.hero-zone > .hero-card { grid-column: 1; }
.hero-rail {
    grid-column: 2;
    display: flex; flex-direction: column; gap: var(--gut);
    min-width: 0;
}
/* secondary stories in the rail read smaller than the feature */
.hero-rail .card .card-title { font-size: 1.02rem; }

.hero-card {
    position: relative; overflow: hidden;
    background: var(--bg-card);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-hero);
    padding: 34px 36px 30px;
    display: flex; flex-direction: column;
    --cat-color: var(--accent);
}
.hero-card[data-cat="coding"] { --cat-color: var(--cat-coding); }
.hero-card[data-cat="design"] { --cat-color: var(--cat-design); }
.hero-card[data-cat="game"]   { --cat-color: var(--cat-game); }
.hero-card[data-cat="music"]  { --cat-color: var(--cat-music); }
.hero-card[data-cat="viral"]  { --cat-color: var(--cat-viral); }
.hero-card .geo {
    position: absolute; top: -40px; right: -40px;
    width: 260px; height: 260px; opacity: .9; pointer-events: none; z-index: 0;
}
.hero-card > * { position: relative; z-index: 1; }

.hero-eyebrow {
    display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
    margin-bottom: 16px;
}
.hero-card .hero-title {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 2.3vw, 2.15rem); font-weight: 700;
    line-height: 1.16; letter-spacing: -.02em; color: var(--ink-strong);
    margin-bottom: 14px; text-wrap: balance;
}
.hero-card .body { font-size: .96rem; max-width: 60ch; }

/* ============================================================
   CATEGORY SECTION
   ============================================================ */
.cat-section { margin-bottom: 52px; scroll-margin-top: 84px; }
.cat-section-head {
    display: flex; align-items: center; gap: 14px;
    margin-bottom: 22px;
    --cat-color: var(--ink-strong);
}
.cat-section[data-cat="coding"] { --cat-color: var(--cat-coding); }
.cat-section[data-cat="design"] { --cat-color: var(--cat-design); }
.cat-section[data-cat="game"]   { --cat-color: var(--cat-game); }
.cat-section[data-cat="music"]  { --cat-color: var(--cat-music); }
.cat-section[data-cat="viral"]  { --cat-color: var(--cat-viral); }
.cat-section-head { color: var(--cat-color); }
.cat-section-head .cs-mark {
    width: 30px; height: 30px; border-radius: var(--radius);
    background: color-mix(in srgb, var(--cat-color) 14%, transparent);
    color: var(--cat-color);
    display: flex; align-items: center; justify-content: center;
    font-size: 15px; flex-shrink: 0;
}
.cat-section-head .cs-title {
    font-family: var(--font-display); font-size: 1.35rem; font-weight: 700;
    color: var(--cat-color); letter-spacing: -.01em;
}
.cat-section-head .cs-count {
    font-family: var(--font-label); font-size: .72rem; font-weight: 700;
    color: var(--ink-faint); margin-left: 2px;
}
.cat-section-head .cs-rule { flex: 1; height: 2px; background: color-mix(in srgb, var(--cat-color) 22%, transparent); }

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
    gap: var(--gut);
    align-items: start;
}

/* ============================================================
   ARTICLE CARD
   ============================================================ */
.card {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    padding: 22px 24px 20px;
    display: flex; flex-direction: column;
    --cat-color: var(--ink-soft);
    transition: border-color .18s, box-shadow .18s, transform .18s;
}
.card[data-cat="coding"] { --cat-color: var(--cat-coding); }
.card[data-cat="design"] { --cat-color: var(--cat-design); }
.card[data-cat="game"]   { --cat-color: var(--cat-game); }
.card[data-cat="music"]  { --cat-color: var(--cat-music); }
.card[data-cat="viral"]  { --cat-color: var(--cat-viral); }
.card:hover { border-color: color-mix(in srgb, var(--cat-color) 45%, var(--line)); }

/* card top row */
.card-top {
    display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
    margin-bottom: 12px;
}
.card-top .spacer { flex: 1; }

/* tags */
.tag {
    display: inline-flex; align-items: center; gap: 4px;
    font-family: var(--font-label); font-size: .62rem; font-weight: 700;
    letter-spacing: .06em; text-transform: uppercase;
    padding: 3px 9px; border-radius: 999px; line-height: 1.4;
    --tg: var(--ink-soft);
    color: var(--tg);
    background: color-mix(in srgb, var(--tg) 12%, transparent);
}
.tag.breaking { --tg: var(--tag-breaking); }
.tag.update   { --tg: var(--tag-update); }
.tag.insight  { --tg: var(--tag-insight); }
.tag.pipeline { --tg: var(--tag-pipeline); }
.tag-solid {
    color: #fff;
    background: var(--tg);
}

.cat-chip {
    display: inline-flex; align-items: center; gap: 5px;
    font-family: var(--font-label); font-size: .62rem; font-weight: 700;
    letter-spacing: .04em; color: var(--cat-color);
    border: none; background: none; padding: 0; white-space: nowrap;
}
.cat-chip:hover { text-decoration: underline; text-underline-offset: 3px; }
.cat-chip .dot { width: 7px; height: 7px; border-radius: 2px; background: var(--cat-color); }

.date-chip {
    font-family: var(--font-label); font-size: .64rem; font-weight: 600;
    color: var(--ink-faint); letter-spacing: .03em;
}

/* fav button */
.fav-btn {
    width: 30px; height: 30px; border-radius: 50%;
    border: 1px solid var(--line); background: var(--bg-card);
    color: var(--ink-faint);
    display: flex; align-items: center; justify-content: center;
    transition: all .16s; flex-shrink: 0;
}
.fav-btn:hover { color: var(--accent); border-color: var(--accent); }
.fav-btn.on { color: var(--accent); border-color: var(--accent); background: color-mix(in srgb, var(--accent) 10%, transparent); }
.fav-btn svg { transition: transform .16s; }
.fav-btn.on svg { fill: currentColor; transform: scale(1.05); }

/* title */
.card-title {
    font-family: var(--font-display);
    font-size: 1.12rem; font-weight: 700; line-height: 1.34;
    letter-spacing: -.01em; color: var(--ink-strong);
    margin-bottom: 11px; text-wrap: pretty;
}
.hero-card .card-title { display: none; }

/* lead / standfirst — 2-sentence summary */
.lead {
    font-size: .92rem; line-height: 1.66; font-weight: 600;
    color: var(--ink-strong);
    margin-bottom: 14px; padding-left: 13px;
    border-left: 3px solid var(--cat-color);
    text-wrap: pretty;
}
.hero-card .lead {
    font-size: 1.04rem; line-height: 1.6;
    border-left: none; padding-left: 0;
    margin-bottom: 16px; max-width: 62ch;
}

/* body */
.body {
    font-size: .88rem; line-height: 1.78; color: var(--ink);
}
.body strong { font-weight: 700; color: var(--ink-strong); }
.body .highlight {
    color: var(--cat-color); font-weight: 700;
    background: color-mix(in srgb, var(--cat-color) 9%, transparent);
    padding: 0 3px; border-radius: 2px;
}
mark.hit { background: color-mix(in srgb, var(--accent) 26%, transparent); color: var(--ink-strong); border-radius: 2px; padding: 0 1px; }

/* viral headline badge */
.viral-badge { --tg: var(--cat-color); letter-spacing: .12em; }

/* collapsible full text (regular cards) */
.card-detail {
    max-height: 0; overflow: hidden; opacity: 0;
    transition: max-height .4s ease, opacity .3s ease, margin .3s ease;
}
.card.detail-open .card-detail,
.hero-card.detail-open .card-detail { max-height: 2600px; opacity: 1; margin-top: 4px; }
.card-detail .body { margin-top: 4px; }
.detail-toggle {
    display: inline-flex; align-items: center; gap: 6px; align-self: flex-start;
    margin-top: 13px;
    font-family: var(--font-label); font-size: .72rem; font-weight: 700;
    color: var(--cat-color); background: none; border: none; padding: 0;
}
.detail-toggle:hover { text-decoration: underline; text-underline-offset: 3px; }
.detail-toggle .chev { display: inline-flex; transition: transform .25s; }
.card.detail-open .detail-toggle .chev,
.hero-card.detail-open .detail-toggle .chev { transform: rotate(180deg); }
.detail-toggle .dt-less { display: none; }
.card.detail-open .detail-toggle .dt-more,
.hero-card.detail-open .detail-toggle .dt-more { display: none; }
.card.detail-open .detail-toggle .dt-less,
.hero-card.detail-open .detail-toggle .dt-less { display: inline; }

/* stats */
.stats {
    display: flex; flex-wrap: wrap; gap: 8px;
    margin: 15px 0 4px;
}
.stat {
    display: flex; flex-direction: column; gap: 3px;
    padding: 7px 12px; border-radius: var(--radius);
    background: var(--bg-sunken);
    border-left: 2.5px solid var(--cat-color);
    min-width: 0;
}
.stat .v {
    font-family: var(--font-label); font-size: .92rem; font-weight: 700;
    color: var(--cat-color); line-height: 1.25; word-break: break-word;
}
.stat .l { font-size: .64rem; color: var(--ink-soft); line-height: 1.3; }
.hero-card .stats { margin-top: 18px; }
.hero-card .stat { padding: 9px 15px; }
.hero-card .stat .v { font-size: 1.15rem; }

/* why matter */
.why {
    margin: 16px 0 4px;
    padding: 13px 15px;
    background: color-mix(in srgb, var(--cat-color) 7%, transparent);
    border-radius: var(--radius);
    border-left: 3px solid var(--cat-color);
    font-size: .82rem; line-height: 1.7;
}
.why-label {
    display: flex; align-items: center; gap: 6px;
    font-family: var(--font-label); font-size: .6rem; font-weight: 700;
    letter-spacing: .12em; text-transform: uppercase;
    color: var(--cat-color); margin-bottom: 6px;
}
.why-label svg { width: 12px; height: 12px; }

/* keywords */
.keywords { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 14px; }
.kw {
    font-family: var(--font-label); font-size: .64rem; font-weight: 500;
    color: var(--ink-soft); background: var(--bg-sunken);
    border: 1px solid transparent;
    padding: 3px 9px; border-radius: 999px; transition: all .14s;
}
.kw::before { content: '#'; opacity: .45; margin-right: 1px; }
.kw:hover { color: var(--accent); border-color: color-mix(in srgb, var(--accent) 40%, transparent); background: color-mix(in srgb, var(--accent) 8%, transparent); }

/* sources (collapsible) */
.card-foot {
    margin-top: 16px; padding-top: 13px;
    border-top: 1px dashed var(--line-strong);
    display: flex; flex-direction: column; gap: 0;
}
.src-toggle {
    display: inline-flex; align-items: center; gap: 7px;
    align-self: flex-start;
    font-family: var(--font-label); font-size: .68rem; font-weight: 600;
    color: var(--ink-soft); background: none; border: none; padding: 0;
}
.src-toggle:hover { color: var(--accent); }
.src-toggle .chev { transition: transform .2s; display: inline-flex; }
.src-toggle.open .chev { transform: rotate(180deg); }
.src-panel {
    overflow: hidden; max-height: 0;
    transition: max-height .28s ease, margin .28s ease, opacity .2s ease;
    opacity: 0;
}
.src-panel.open { max-height: 320px; opacity: 1; margin-top: 11px; }
.src-list { display: flex; flex-wrap: wrap; gap: 7px; }
.src-link {
    display: inline-flex; align-items: center; gap: 6px;
    font-family: var(--font-body); font-size: .72rem; font-weight: 500;
    color: var(--ink); text-decoration: none;
    background: var(--bg-sunken); border: 1px solid var(--line-strong);
    padding: 5px 11px; border-radius: var(--radius);
    transition: all .15s;
}
.src-link:hover { border-color: var(--accent); color: var(--accent); }
.src-link svg { width: 11px; height: 11px; opacity: .6; }
.src-hint { font-size: .68rem; color: var(--ink-faint); margin-top: 8px; line-height: 1.5; }

/* ============================================================
   EMPTY STATE
   ============================================================ */
.empty {
    text-align: center; padding: 90px 20px; color: var(--ink-faint);
    grid-column: 1 / -1;
}
.empty .ico {
    width: 64px; height: 64px; margin: 0 auto 18px;
    border-radius: 50%; background: var(--bg-sunken);
    display: flex; align-items: center; justify-content: center;
    color: var(--ink-faint);
}
.empty p { font-size: .92rem; }
.empty .sub { font-size: .8rem; color: var(--ink-faint); margin-top: 6px; }

/* ============================================================
   FOOTER
   ============================================================ */
.foot {
    max-width: var(--maxw); margin: 0 auto; padding: 30px var(--gut) 50px;
    border-top: 1px solid var(--line);
    font-size: .76rem; color: var(--ink-faint); line-height: 1.7;
    display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap;
}

/* ============================================================
   MOBILE NAV TOGGLE
   ============================================================ */
.rail-toggle { display: none; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1080px) {
    .shell { grid-template-columns: 1fr; gap: 0; }
    .rail {
        position: static; max-height: none; overflow: visible;
        padding: 0; margin-bottom: 8px;
    }
    .rail-toggle {
        display: flex; align-items: center; justify-content: space-between;
        width: 100%; padding: 14px 0; background: none; border: none;
        border-bottom: 1px solid var(--line);
        font-family: var(--font-label); font-size: .76rem; font-weight: 700;
        letter-spacing: .1em; text-transform: uppercase; color: var(--ink-soft);
    }
    .rail-body { overflow: hidden; max-height: 0; transition: max-height .35s ease; }
    .rail-body.open { max-height: 1400px; padding-top: 22px; }
    .rail-body-inner { display: grid; grid-template-columns: minmax(220px, 280px) 1fr; gap: 34px; align-items: start; }
    .main { padding-top: 22px; }
}
@media (max-width: 720px) {
    :root { --gut: 16px; }
    .topbar-inner { height: auto; padding: 12px var(--gut); flex-wrap: wrap; row-gap: 10px; }
    .search-wrap { order: 5; width: 100%; }
    .style-switch button { padding: 6px 9px; font-size: .68rem; }
    .rail-body-inner { grid-template-columns: 1fr; gap: 26px; }
    .hero-zone, .hero-zone.solo { grid-template-columns: 1fr; max-width: none; }
    .hero-zone > .hero-card { grid-column: 1; }
    .hero-rail { grid-column: 1; }
    .card-grid { grid-template-columns: 1fr; }
    .hero-card { padding: 24px 22px; }
    .context-head .ch-title { font-size: 1.7rem; }
}

@media (prefers-reduced-motion: reduce) {
    * { transition-duration: 0ms !important; animation: none !important; scroll-behavior: auto !important; }
}