/* ══════════════════════════════════════════════════════════════
   VLOG WEEKLY — NEXT-GEN DESIGN SYSTEM (v6_theme.css)
   Aesthetic: Ultra-modern Dark Mode, Bento Layout, High Visual Hierarchy,
   Breathable Whitespace, Zero Clutter.
   ══════════════════════════════════════════════════════════════ */

:root {
  /* ── Canvas & Surface ── */
  --bg-dark: #08090d;
  --bg-card: #111420;
  --bg-card-hover: #161b2c;
  --bg-glass: rgba(17, 20, 32, 0.75);
  --bg-subtle: rgba(255, 255, 255, 0.03);

  /* ── Borders & Outlines ── */
  --border: rgba(255, 255, 255, 0.08);
  --border-light: rgba(255, 255, 255, 0.14);
  --border-glow-cyan: rgba(6, 182, 212, 0.5);
  --border-glow-purple: rgba(168, 85, 247, 0.5);

  /* ── Accent Colors ── */
  --cyan: #06b6d4;
  --cyan-light: #22d3ee;
  --purple: #a855f7;
  --purple-light: #c084fc;
  --amber: #f59e0b;
  --emerald: #10b981;
  --rose: #f43f5e;

  /* ── Typography Colors ── */
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-dim: #475569;

  /* ── Platform Branding ── */
  --bili: #00a1d6;
  --douyin: #fe2c55;
  --xhs: #ff2442;
  --yt: #ff0000;

  /* ── Geometry & Motion ── */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-pill: 9999px;
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 16px 36px -4px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 30px rgba(6, 182, 212, 0.15);
  --ease-spring: cubic-bezier(0.16, 1, 0.3, 1);
  --transition: all 0.22s var(--ease-spring);
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body {
  background: var(--bg-dark);
  color: var(--text-primary);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* ── Subtle Ambient Backdrop ── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 70vw 45vh at 15% 10%, rgba(6, 182, 212, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse 60vw 45vh at 85% 85%, rgba(168, 85, 247, 0.07) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
}

.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* ══════════════════════════════════════════════════════════════
   GLOBAL UNIFIED HEADER
   ══════════════════════════════════════════════════════════════ */
header.v6-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: rgba(8, 9, 13, 0.88);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border-bottom: 1px solid var(--border);
  height: 64px;
  display: flex;
  align-items: center;
}
.header-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}
.header-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}
.header-logo-mark {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--cyan), var(--purple));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 800;
  color: #fff;
}
.header-logo-text {
  font-family: 'Outfit', sans-serif;
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #fff;
}
.header-issue-tag {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--cyan);
  background: rgba(6, 182, 212, 0.12);
  border: 1px solid rgba(6, 182, 212, 0.28);
  padding: 2px 8px;
  border-radius: var(--radius-pill);
}

/* ── Premium Dropdown Select for Issue Switcher ── */
.header-issue-select-wrap {
  position: relative;
  display: inline-flex;
  align-items: center;
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.12), rgba(168, 85, 247, 0.08));
  border: 1px solid rgba(6, 182, 212, 0.32);
  border-radius: var(--radius-pill);
  padding: 0 10px 0 12px;
  height: 34px;
  transition: all 0.2s ease;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.35);
  cursor: pointer;
}
.header-issue-select-wrap:hover {
  background: rgba(6, 182, 212, 0.22);
  border-color: var(--cyan);
  box-shadow: 0 0 16px rgba(6, 182, 212, 0.3);
}
.header-issue-select-wrap .issue-select-icon {
  width: 13px;
  height: 13px;
  color: var(--cyan);
  margin-right: 6px;
  flex-shrink: 0;
  pointer-events: none;
}
.header-issue-select-wrap .issue-select-arrow {
  width: 10px;
  height: 10px;
  color: var(--cyan);
  margin-left: 6px;
  flex-shrink: 0;
  pointer-events: none;
  opacity: 0.8;
}
.v6-issue-select {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  background: transparent;
  border: none;
  outline: none;
  color: #fff;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  padding: 0 2px;
  height: 100%;
  line-height: 32px;
}
.v6-issue-select option {
  background-color: #111420;
  color: #fff;
  padding: 10px;
  font-size: 0.85rem;
}

/* Header Issue Selector Dropdown (Classic Old Style & V6 Unified) */
.dropdown-wrap,
.header-issue-dropdown {
  position: relative;
  display: inline-block;
}
.week-badge,
.header-issue-btn {
  font-family: 'Inter', -apple-system, sans-serif;
  font-size: 0.8rem;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.12), rgba(168, 85, 247, 0.08));
  border: 1px solid rgba(6, 182, 212, 0.3);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.2s ease;
  outline: none;
  user-select: none;
  white-space: nowrap;
}
.week-badge:hover,
.header-issue-btn:hover {
  background: rgba(6, 182, 212, 0.22);
  border-color: var(--cyan);
  color: var(--cyan-light);
  box-shadow: 0 0 16px rgba(6, 182, 212, 0.25);
}
.header-issue-btn .issue-calendar-icon {
  width: 13px;
  height: 13px;
  color: var(--cyan);
  opacity: 0.85;
}
.week-badge .arrow-icon,
.header-issue-btn .arrow-icon,
.week-badge svg,
.header-issue-btn svg {
  width: 10px;
  height: 10px;
  transition: transform 0.2s ease;
  opacity: 0.75;
}
.dropdown-wrap.open .week-badge .arrow-icon,
.header-issue-dropdown.open .header-issue-btn .arrow-icon,
.dropdown-wrap.open .week-badge svg,
.header-issue-dropdown.open .header-issue-btn svg {
  transform: rotate(180deg);
}
.dropdown-menu,
.v6-issue-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  left: auto;
  width: max-content;
  min-width: 270px;
  max-width: 360px;
  background: #111420;
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-sm);
  padding: 6px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.85);
  display: none;
  flex-direction: column;
  gap: 2px;
  z-index: 1000;
  animation: v6DropdownFade 0.18s ease-out;
}
.dropdown-wrap.open .dropdown-menu,
.header-issue-dropdown.open .v6-issue-menu,
.dropdown-wrap.open .v6-issue-menu,
.header-issue-dropdown.open .dropdown-menu {
  display: flex !important;
  flex-direction: column !important;
}
@keyframes v6DropdownFade {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}
.dropdown-item,
.v6-issue-item {
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  padding: 8px 12px !important;
  border-radius: var(--radius-xs) !important;
  font-size: 0.82rem !important;
  color: var(--text-secondary, #94a3b8) !important;
  transition: all 0.15s ease !important;
  text-decoration: none !important;
  white-space: nowrap !important;
}
.dropdown-item:hover,
.v6-issue-item:hover {
  background: rgba(255, 255, 255, 0.08) !important;
  color: #fff !important;
}
.dropdown-item.current,
.dropdown-item.active,
.v6-issue-item.active,
.v6-issue-item.current {
  background: rgba(6, 182, 212, 0.16) !important;
  color: var(--cyan) !important;
  font-weight: 600 !important;
}
.dropdown-item .item-tag,
.v6-issue-item .item-tag {
  font-size: 0.68rem;
  font-weight: 600;
  padding: 1px 6px;
  border-radius: 99px;
  background: rgba(6, 182, 212, 0.15);
  color: var(--cyan);
  border: 1px solid rgba(6, 182, 212, 0.3);
  margin-left: 10px;
}

/* Unified Navigation Tabs */
.header-nav {
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  padding: 3px;
  gap: 3px;
}
.nav-tab-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  transition: var(--transition);
}
.nav-tab-item:hover { color: #fff; }
.nav-tab-item.active {
  background: #fff;
  color: #000;
  box-shadow: 0 2px 8px rgba(255, 255, 255, 0.2);
}

.header-right-tools {
  display: flex;
  align-items: center;
  gap: 10px;
}
.btn-legacy-back {
  font-size: 0.75rem;
  color: var(--text-muted);
  border: 1px solid var(--border);
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  transition: var(--transition);
}
.btn-legacy-back:hover {
  color: #fff;
  border-color: var(--border-light);
}

/* ══════════════════════════════════════════════════════════════
   HERO / EXECUTIVE KPI DECK
   ══════════════════════════════════════════════════════════════ */
.hero-v6 {
  padding: 36px 0 24px 0;
}
.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--cyan);
  text-transform: uppercase;
  margin-bottom: 10px;
}
.hero-headline {
  font-family: 'Outfit', sans-serif;
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.2;
  color: #fff;
  margin-bottom: 8px;
}
.hero-verdict-summary {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 820px;
  line-height: 1.6;
}

/* KPI 4-Card Ribbon */
.kpi-ribbon {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 24px;
}
.kpi-tile {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px 18px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.kpi-tile:hover {
  border-color: var(--border-light);
  transform: translateY(-2px);
}
.kpi-tile::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; height: 3px;
  background: var(--tile-glow, var(--cyan));
}
.kpi-tile-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}
.kpi-big-num {
  font-family: 'Outfit', sans-serif;
  font-size: 1.8rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.1;
  display: flex;
  align-items: baseline;
  gap: 4px;
}
.kpi-big-num span.unit {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
}
.kpi-caption {
  font-size: 0.74rem;
  color: var(--text-muted);
  margin-top: 6px;
}

/* ══════════════════════════════════════════════════════════════
   SECTION TITLES
   ══════════════════════════════════════════════════════════════ */
.section-v6 {
  margin-top: 40px;
}
.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
  flex-wrap: wrap;
  gap: 12px;
}
.section-title-wrap {
  display: flex;
  align-items: baseline;
  gap: 12px;
}
.section-h2 {
  font-family: 'Outfit', sans-serif;
  font-size: 1.35rem;
  font-weight: 700;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 8px;
}
.section-subtext {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ══════════════════════════════════════════════════════════════
   SCANNABLE BENTO DEVICE CARDS (呼吸感 · 拒绝密密麻麻)
   ══════════════════════════════════════════════════════════════ */
.bento-showcase-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.device-bento-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  position: relative;
}
.device-bento-box:hover {
  border-color: var(--border-glow-cyan);
  box-shadow: var(--shadow-glow);
  transform: translateY(-3px);
}
.device-bento-box.hero-focus {
  grid-column: span 2;
}

.box-top-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}
.box-device-name {
  font-family: 'Outfit', sans-serif;
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
}
.box-brand-badge {
  font-size: 0.68rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  text-transform: uppercase;
}
.box-brand-badge.dji {
  background: rgba(6, 182, 212, 0.15);
  color: var(--cyan-light);
  border: 1px solid rgba(6, 182, 212, 0.3);
}
.box-brand-badge.insta {
  background: rgba(168, 85, 247, 0.15);
  color: var(--purple-light);
  border: 1px solid rgba(168, 85, 247, 0.3);
}

/* One-Liner Verdict: BOLD & ACCESSIBLE */
.box-verdict {
  font-size: 0.88rem;
  font-weight: 600;
  color: #fff;
  line-height: 1.45;
  background: rgba(255, 255, 255, 0.04);
  border-left: 3px solid var(--cyan);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
}

/* Bullet Chips (Concise Highlights) */
.box-chips-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 16px;
}
.chip-row {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 0.8rem;
  line-height: 1.4;
  padding: 6px 10px;
  border-radius: 6px;
}
.chip-row.pro {
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.2);
  color: #e2e8f0;
}
.chip-row.pro .chip-sign {
  color: var(--emerald);
  font-weight: bold;
}
.chip-row.con {
  background: rgba(244, 63, 94, 0.08);
  border: 1px solid rgba(244, 63, 94, 0.2);
  color: #e2e8f0;
}
.chip-row.con .chip-sign {
  color: var(--rose);
  font-weight: bold;
}

/* Footer of the Bento Box */
.box-footer {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.78rem;
}
.box-advice-badge {
  color: var(--cyan);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 4px;
}
.box-jump-link {
  color: var(--text-secondary);
  font-weight: 600;
  transition: var(--transition);
}
.box-jump-link:hover { color: #fff; }

/* ══════════════════════════════════════════════════════════════
   RESPONSIVE DESIGN
   ══════════════════════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .bento-showcase-grid { grid-template-columns: repeat(2, 1fr); }
  .device-bento-box.hero-focus { grid-column: span 2; }
  .kpi-ribbon { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
  .bento-showcase-grid { grid-template-columns: 1fr; }
  .device-bento-box.hero-focus { grid-column: span 1; }
  .kpi-ribbon { grid-template-columns: 1fr; }
  .header-nav { display: none; } /* Show in drawer or bottom bar on mobile */
  .hero-headline { font-size: 1.75rem; }
  .v6-archive-grid { grid-template-columns: 1fr !important; }
}



/* All-Issues Archive Bento Showcase */
.v6-archive-section {
  margin-top: 64px;
  padding: 32px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02) 0%, rgba(13, 16, 26, 0.6) 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  position: relative;
  overflow: hidden;
}
.v6-archive-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 10%;
  right: 10%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(6, 182, 212, 0.35), rgba(236, 72, 153, 0.25), transparent);
}
.v6-archive-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 24px;
}
@media (max-width: 1100px) {
  .v6-archive-grid { grid-template-columns: repeat(2, 1fr); }
}
.v6-archive-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 20px;
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  text-decoration: none;
}
.v6-archive-card:hover {
  transform: translateY(-4px);
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(6, 182, 212, 0.4);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.5), 0 0 20px rgba(6, 182, 212, 0.08);
}
.v6-archive-card.active {
  background: rgba(6, 182, 212, 0.07);
  border-color: var(--cyan);
  box-shadow: 0 8px 24px rgba(6, 182, 212, 0.15);
}
.v6-archive-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}
.v6-archive-id {
  font-family: 'Outfit', sans-serif;
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 8px;
}
.v6-archive-card.active .v6-archive-id {
  color: var(--cyan);
}
.v6-archive-date {
  font-size: 0.72rem;
  color: var(--text-muted);
}
.v6-archive-headline {
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1.45;
  color: #f1f5f9;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.v6-archive-summary {
  font-size: 0.78rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.v6-archive-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
  margin-top: auto;
}
.v6-archive-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.68rem;
  font-weight: 500;
  padding: 3px 8px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: #cbd5e1;
}
.v6-archive-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 0.76rem;
}
.v6-archive-primary-cta {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-weight: 700;
  color: var(--cyan);
}
.v6-archive-sublinks {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.7rem;
  color: var(--text-muted);
}
.v6-archive-sublink {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s;
}
.v6-archive-sublink:hover {
  color: #fff;
}