/* =============================================
   AI 部署手记 — Business Modern Stylesheet
   Swiss Modernism + Flat Design
   ============================================= */

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;600;700;900&family=Inter:wght@400;500;600;700;800&display=swap');

/* ── Reset ─────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ── Design Tokens ─────────────────────────── */
:root {
  /* Brand */
  --primary:        #1D4ED8;
  --primary-dark:   #1E40AF;
  --primary-light:  #DBEAFE;
  --primary-subtle: #EFF6FF;

  --accent:         #F97316;
  --accent-dark:    #EA580C;
  --accent-light:   #FED7AA;

  --navy:           #0F172A;
  --navy-2:         #1E293B;

  /* Text */
  --text:           #0F172A;
  --text-2:         #1E293B;
  --text-muted:     #475569;
  --text-light:     #94A3B8;

  /* Backgrounds */
  --bg:             #FFFFFF;
  --bg-subtle:      #F8FAFC;
  --bg-muted:       #F1F5F9;

  /* Borders */
  --border:         #E2E8F0;
  --border-strong:  #CBD5E1;

  /* Category palette */
  --c-tut:      #0EA5E9;  --c-tut-bg:  #F0F9FF;
  --c-bug:      #F97316;  --c-bug-bg:  #FFF7ED;
  --c-cmp:      #7C3AED;  --c-cmp-bg:  #F5F3FF;
  --c-ai:       #7C3AED;  --c-ai-bg:   #F5F3FF;
  --c-web:      #0891B2;  --c-web-bg:  #ECFEFF;
  --c-sec:      #DC2626;  --c-sec-bg:  #FEF2F2;
  --c-cloud:    #0284C7;  --c-cloud-bg:#F0F9FF;
  --c-prog:     #059669;  --c-prog-bg: #ECFDF5;
  --c-life:     #D97706;  --c-life-bg: #FFFBEB;
  --c-open:     #4338CA;  --c-open-bg: #EEF2FF;

  /* Shadows */
  --shadow-xs:  0 1px 2px rgba(0,0,0,.04);
  --shadow-sm:  0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow:     0 4px 6px -1px rgba(0,0,0,.06), 0 2px 4px -2px rgba(0,0,0,.04);
  --shadow-md:  0 6px 16px -2px rgba(0,0,0,.08), 0 3px 6px -3px rgba(0,0,0,.04);
  --shadow-lg:  0 10px 24px -3px rgba(0,0,0,.09), 0 4px 8px -4px rgba(0,0,0,.04);
  --shadow-xl:  0 20px 40px -6px rgba(0,0,0,.10), 0 8px 16px -6px rgba(0,0,0,.04);

  /* Radius */
  --r-xs: 4px;
  --r-sm: 6px;
  --r:    8px;
  --r-lg: 12px;
  --r-xl: 24px;

  /* Type */
  --font-heading: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'PingFang SC', sans-serif;
  --font:  'Noto Sans SC', 'Inter', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --mono:  'JetBrains Mono', 'Fira Code', Consolas, monospace;

  --max-w: 1280px;
  --t:     180ms ease;
}

/* ── Base ───────────────────────────────────── */
html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--primary); text-decoration: none; transition: color var(--t); }
a:hover { color: var(--primary-dark); }

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Reading Progress Bar ───────────────────── */
.reading-progress {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  z-index: 9999;
  transition: width .1s linear;
}

/* ── Header ─────────────────────────────────── */
.site-header {
  background: rgba(255,255,255,.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: box-shadow var(--t);
}

.site-header.scrolled { box-shadow: var(--shadow-md); }

.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 64px;
}

.logo a {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--navy);
  letter-spacing: -.03em;
}

.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--primary);
  border-radius: var(--r-sm);
  flex-shrink: 0;
}

.logo-mark svg { width: 18px; height: 18px; }

.logo a:hover { color: var(--primary); }

.main-nav { display: flex; align-items: center; gap: 1.5rem; }

.nav-menu {
  display: flex;
  list-style: none;
  gap: .25rem;
}

.nav-menu a {
  color: var(--text-muted);
  font-weight: 500;
  font-size: .9rem;
  padding: .375rem .75rem;
  border-radius: var(--r-sm);
  transition: all var(--t);
  display: block;
}

.nav-menu a:hover {
  color: var(--text);
  background: var(--bg-muted);
}

.nav-menu a.active {
  color: var(--primary);
  background: var(--primary-subtle);
  font-weight: 600;
}

/* ── Dropdown menus ─────────────────────────── */
.has-dropdown {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  min-width: 220px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r);
  box-shadow: 0 8px 24px rgba(0,0,0,.12);
  padding: .375rem;
  list-style: none;
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  transform: translateY(6px);
  transition: opacity .18s ease, transform .18s ease, visibility .18s;
  pointer-events: none;
}

.has-dropdown:hover .dropdown-menu,
.has-dropdown.open .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

.dropdown-menu a {
  display: block;
  padding: .5rem .75rem;
  border-radius: var(--r-sm);
  font-size: .85rem;
  color: var(--text-muted);
  white-space: nowrap;
  transition: all var(--t);
}

.dropdown-menu a:hover {
  color: var(--text);
  background: var(--bg-muted);
}

.has-dropdown > a::after {
  content: '';
  display: inline-block;
  width: 6px; height: 6px;
  margin-left: 6px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg) translateY(-2px);
  opacity: .5;
  transition: transform .2s;
}

.has-dropdown:hover > a::after,
.has-dropdown.open > a::after {
  transform: rotate(-135deg) translateY(1px);
  opacity: .8;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  padding: .4375rem 1rem;
  background: var(--primary);
  color: white !important;
  border-radius: var(--r-sm);
  font-size: .875rem;
  font-weight: 600;
  transition: background var(--t), transform var(--t), box-shadow var(--t);
  box-shadow: 0 1px 3px rgba(29,78,216,.3);
}

.nav-cta:hover {
  background: var(--primary-dark) !important;
  color: white !important;
  transform: translateY(-1px);
  box-shadow: 0 4px 10px rgba(29,78,216,.35);
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  flex-direction: column;
  gap: 5px;
  padding: 6px;
}

.mobile-menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--t);
}

/* ── Buttons ─────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .625rem 1.375rem;
  border-radius: var(--r);
  font-weight: 600;
  font-size: .9375rem;
  cursor: pointer;
  border: 1.5px solid transparent;
  transition: all var(--t);
  text-align: center;
  line-height: 1.4;
}

.btn-primary {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
  box-shadow: 0 1px 3px rgba(29,78,216,.25);
}

.btn-primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  color: white;
  box-shadow: 0 4px 12px rgba(29,78,216,.35);
  transform: translateY(-1px);
}

.btn-secondary {
  background: transparent;
  color: var(--primary);
  border-color: var(--border-strong);
}

.btn-secondary:hover {
  border-color: var(--primary);
  background: var(--primary-subtle);
  color: var(--primary);
}

/* ── Category Badges ─────────────────────────── */
.post-category {
  display: inline-flex;
  align-items: center;
  padding: .2rem .625rem;
  border-radius: var(--r-xs);
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  background: var(--primary-subtle);
  color: var(--primary);
}

.post-category.cat-tut   { background: var(--c-tut-bg);  color: var(--c-tut); }
.post-category.cat-bug   { background: var(--c-bug-bg);  color: var(--c-bug); }
.post-category.cat-cmp   { background: var(--c-cmp-bg);  color: var(--c-cmp); }
.post-category.cat-ai    { background: var(--c-ai-bg);   color: var(--c-ai); }
.post-category.cat-web   { background: var(--c-web-bg);  color: var(--c-web); }
.post-category.cat-sec   { background: var(--c-sec-bg);  color: var(--c-sec); }
.post-category.cat-cloud { background: var(--c-cloud-bg);color: var(--c-cloud); }
.post-category.cat-prog  { background: var(--c-prog-bg); color: var(--c-prog); }
.post-category.cat-life  { background: var(--c-life-bg); color: var(--c-life); }
.post-category.cat-open  { background: var(--c-open-bg); color: var(--c-open); }

/* ── Hero Section ────────────────────────────── */
.hero {
  background: var(--navy);
  color: white;
  padding: 96px 0 80px;
  position: relative;
  overflow: hidden;
}

/* Grid dot pattern */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

/* Blue accent glow */
.hero::after {
  content: '';
  position: absolute;
  top: -120px;
  right: -80px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(29,78,216,.35) 0%, transparent 65%);
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-content { max-width: 580px; }

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .3125rem .875rem;
  background: rgba(29,78,216,.3);
  border: 1px solid rgba(99,157,255,.25);
  border-radius: var(--r-xs);
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: #93C5FD;
  margin-bottom: 1.5rem;
}

.hero-eyebrow .dot { width: 6px; height: 6px; background: #60A5FA; border-radius: 50%; }

.hero h1 {
  font-family: var(--font-heading);
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -.04em;
  margin-bottom: 1.5rem;
  color: white;
}

.hero h1 .accent-line {
  position: relative;
  display: inline-block;
  color: #60A5FA;
}

.hero-subtitle {
  font-size: 1.0625rem;
  color: rgba(255,255,255,.65);
  max-width: 480px;
  line-height: 1.75;
  margin-bottom: 2.5rem;
}

.hero-actions {
  display: flex;
  gap: .875rem;
  flex-wrap: wrap;
}

.btn-hero-primary {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
  font-weight: 700;
  padding: .75rem 1.75rem;
  font-size: 1rem;
  border-radius: var(--r);
  box-shadow: 0 4px 16px rgba(29,78,216,.4);
}

.btn-hero-primary:hover {
  background: #2563EB;
  border-color: #2563EB;
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(29,78,216,.5);
}

.btn-hero-outline {
  background: transparent;
  color: rgba(255,255,255,.8);
  border-color: rgba(255,255,255,.2);
  padding: .75rem 1.75rem;
  font-size: 1rem;
  border-radius: var(--r);
}

.btn-hero-outline:hover {
  background: rgba(255,255,255,.08);
  border-color: rgba(255,255,255,.4);
  color: white;
  transform: translateY(-2px);
}

/* Hero stats */
.hero-stats {
  display: flex;
  gap: 2.5rem;
  margin-top: 3rem;
  padding-top: 2.5rem;
  border-top: 1px solid rgba(255,255,255,.1);
}

.hero-stat-num {
  display: block;
  font-family: var(--font-heading);
  font-size: 2.25rem;
  font-weight: 800;
  color: white;
  letter-spacing: -.04em;
  line-height: 1;
}

.hero-stat-label {
  display: block;
  font-size: .8125rem;
  color: rgba(255,255,255,.45);
  margin-top: .375rem;
  letter-spacing: .02em;
}

/* Hero visual panel */
.hero-visual {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.hero-card {
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--r-lg);
  padding: 1.25rem 1.5rem;
  backdrop-filter: blur(8px);
  transition: border-color var(--t);
}

.hero-card:hover { border-color: rgba(99,157,255,.35); }

.hero-card-label {
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: #60A5FA;
  margin-bottom: .625rem;
}

.hero-card-title {
  font-size: .9375rem;
  font-weight: 600;
  color: rgba(255,255,255,.9);
  line-height: 1.45;
  margin-bottom: .375rem;
}

.hero-card-meta {
  display: flex;
  align-items: center;
  gap: .625rem;
  font-size: .8rem;
  color: rgba(255,255,255,.4);
}

.hero-card-dot { width: 4px; height: 4px; background: rgba(255,255,255,.3); border-radius: 50%; }

/* ── Section Headings ────────────────────────── */
.section-label {
  display: inline-block;
  font-size: .6875rem;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: .75rem;
}

.section-heading {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-bottom: 3rem;
}

.section-heading-text {}

.section-heading h2 {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -.03em;
  color: var(--text);
}

.section-heading-line {
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ── Featured Posts (Card Grid) ──────────────── */
.featured-posts {
  padding: 88px 0 72px;
  background: var(--bg);
}

.post-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.post-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: transform var(--t), box-shadow var(--t), border-color var(--t);
  display: flex;
  flex-direction: column;
  cursor: pointer;
}

.post-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-strong);
}

.post-image { position: relative; overflow: hidden; }

.post-image img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform .5s ease;
}

.post-card:hover .post-image img { transform: scale(1.04); }

/* Accent top border on hover */
.post-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s ease;
}

.post-card { position: relative; }
.post-card:hover::before { transform: scaleX(1); }

.post-content {
  padding: 1.375rem 1.5rem 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: .625rem;
}

.post-content h3 {
  font-family: var(--font-heading);
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -.02em;
}

.post-content h3 a { color: var(--text); }
.post-content h3 a:hover { color: var(--primary); }

.post-content p {
  color: var(--text-muted);
  font-size: .9rem;
  line-height: 1.7;
  flex: 1;
}

.post-meta {
  display: flex;
  align-items: center;
  gap: .625rem;
  font-size: .8125rem;
  color: var(--text-light);
  padding-top: .625rem;
  border-top: 1px solid var(--border);
}

.post-meta .dot { color: var(--border-strong); }

/* ── Latest Posts (List) ─────────────────────── */
.latest-posts {
  padding: 72px 0 88px;
  background: var(--bg-subtle);
}

.post-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-bottom: 3rem;
}

.post-item {
  display: grid;
  grid-template-columns: 260px 1fr;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: box-shadow var(--t), transform var(--t), border-color var(--t);
  cursor: pointer;
}

.post-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  border-color: var(--border-strong);
}

.post-thumbnail { overflow: hidden; }

.post-thumbnail img {
  width: 100%;
  height: 100%;
  min-height: 175px;
  object-fit: cover;
  transition: transform .5s ease;
}

.post-item:hover .post-thumbnail img { transform: scale(1.05); }

.post-info {
  padding: 1.375rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: .5rem;
  justify-content: center;
}

.post-info h3 {
  font-family: var(--font-heading);
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -.02em;
}

.post-info h3 a { color: var(--text); }
.post-info h3 a:hover { color: var(--primary); }

.post-info p {
  color: var(--text-muted);
  font-size: .9rem;
  line-height: 1.65;
}

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

/* ── Newsletter ──────────────────────────────── */
.newsletter {
  background: var(--navy);
  padding: 88px 0;
  text-align: center;
  color: white;
  position: relative;
  overflow: hidden;
}

.newsletter::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

.newsletter::after {
  content: '';
  position: absolute;
  bottom: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 300px;
  background: radial-gradient(ellipse, rgba(29,78,216,.3) 0%, transparent 70%);
  pointer-events: none;
}

.newsletter .container { position: relative; z-index: 1; }

.newsletter .section-label { color: #93C5FD; }

.newsletter h2 {
  font-family: var(--font-heading);
  font-size: 2.25rem;
  font-weight: 800;
  margin-bottom: .875rem;
  letter-spacing: -.04em;
}

.newsletter > .container > p {
  color: rgba(255,255,255,.6);
  margin-bottom: 2.5rem;
  font-size: 1rem;
  max-width: 440px;
  margin-left: auto;
  margin-right: auto;
}

.newsletter-form {
  display: flex;
  gap: .75rem;
  max-width: 460px;
  margin: 0 auto;
}

.newsletter-form input {
  flex: 1;
  padding: .75rem 1.125rem;
  border: 1px solid rgba(255,255,255,.15);
  border-radius: var(--r);
  font-size: .9375rem;
  background: rgba(255,255,255,.08);
  color: white;
  font-family: var(--font);
}

.newsletter-form input::placeholder { color: rgba(255,255,255,.4); }

.newsletter-form input:focus {
  outline: none;
  border-color: rgba(99,157,255,.5);
  background: rgba(255,255,255,.12);
}

.newsletter-form .btn {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
  font-weight: 700;
  white-space: nowrap;
  border-radius: var(--r);
  box-shadow: 0 2px 8px rgba(249,115,22,.35);
}

.newsletter-form .btn:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(249,115,22,.45);
}

/* ── Footer ──────────────────────────────────── */
.site-footer {
  background: #020617;
  color: rgba(255,255,255,.7);
  padding: 72px 0 28px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2.5fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(255,255,255,.06);
}

.footer-about .footer-logo {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 800;
  color: white;
  margin-bottom: 1.125rem;
  letter-spacing: -.03em;
}

.footer-logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: var(--primary);
  border-radius: var(--r-xs);
  flex-shrink: 0;
}

.footer-logo-mark svg { width: 16px; height: 16px; }

.footer-about p {
  line-height: 1.75;
  font-size: .9rem;
  max-width: 300px;
  color: rgba(255,255,255,.45);
}

.footer-tagline {
  display: inline-block;
  margin-top: 1.125rem;
  padding: .25rem .75rem;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--r-xs);
  font-size: .75rem;
  color: rgba(255,255,255,.4);
  letter-spacing: .04em;
}

.footer-links h4, .footer-legal h4 {
  font-size: .6875rem;
  font-weight: 800;
  color: rgba(255,255,255,.5);
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
}

.footer-links ul, .footer-legal ul { list-style: none; }

.footer-links li, .footer-legal li { margin-bottom: .5rem; }

.footer-links a, .footer-legal a {
  color: rgba(255,255,255,.45);
  font-size: .9rem;
  transition: color var(--t);
}

.footer-links a:hover, .footer-legal a:hover { color: white; }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: .8125rem;
  color: rgba(255,255,255,.25);
}

/* ── Cookie Consent ──────────────────────────── */
.cookie-consent {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: rgba(2,6,23,.97);
  backdrop-filter: blur(12px);
  color: white;
  padding: 20px 0;
  z-index: 1000;
  transform: translateY(100%);
  transition: transform .35s ease;
  border-top: 1px solid rgba(255,255,255,.06);
}

.cookie-consent.active { transform: translateY(0); }

.cookie-consent .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
}

.cookie-consent p {
  font-size: .875rem;
  color: rgba(255,255,255,.65);
}

.cookie-consent a { color: #93C5FD; text-decoration: underline; }

/* ── Page Header (Archive, About, etc.) ──────── */
.page-header {
  background: var(--bg-subtle);
  padding: 72px 0;
  border-bottom: 1px solid var(--border);
}

.page-header h1 {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -.04em;
  margin-bottom: 1rem;
}

.page-header p {
  color: var(--text-muted);
  font-size: 1.0625rem;
  max-width: 560px;
  margin: 0 auto;
}

/* ── Content Pages (Privacy, Terms, etc.) ────── */
.content-page { padding: 64px 0; }
.content-page .container { max-width: 800px; }

.content-page h2 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  margin: 2.5rem 0 1rem;
  letter-spacing: -.02em;
}

.content-page h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 2rem 0 .75rem;
}

.content-page p {
  margin-bottom: 1.125rem;
  line-height: 1.85;
  color: var(--text-2);
  font-size: 1.0125rem;
}

.content-page ul, .content-page ol {
  margin-bottom: 1.125rem;
  padding-left: 1.75rem;
}

.content-page li {
  margin-bottom: .5rem;
  color: var(--text-2);
  line-height: 1.75;
}

.content-page a { text-decoration: underline; }

/* ── Contact Form ────────────────────────────── */
.contact-form { max-width: 600px; }

.form-group { margin-bottom: 1.5rem; }

.form-group label {
  display: block;
  margin-bottom: .5rem;
  font-weight: 500;
  font-size: .9375rem;
}

.form-group input, .form-group textarea {
  width: 100%;
  padding: .75rem 1rem;
  border: 1.5px solid var(--border);
  border-radius: var(--r);
  font-size: 1rem;
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  transition: border-color var(--t), box-shadow var(--t);
}

.form-group input:focus, .form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

.form-group textarea { min-height: 160px; resize: vertical; }

/* ── Article / Post Page ─────────────────────── */
.post-header {
  background: var(--bg-subtle);
  padding: 64px 0 48px;
  border-bottom: 1px solid var(--border);
}

.post-header .container { max-width: 820px; }

.post-header h1 {
  font-family: var(--font-heading);
  font-size: 2.375rem;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -.04em;
  margin: 1rem 0 1.25rem;
}

.post-header .post-meta {
  display: flex;
  align-items: center;
  gap: .75rem;
  color: var(--text-muted);
  font-size: .9rem;
  flex-wrap: wrap;
}

.post-hero-image {
  background: var(--bg-subtle);
  padding: 0 0 2px;
}

.post-hero-image .container { max-width: 820px; }

.post-hero-image img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  border-radius: 0 0 var(--r-lg) var(--r-lg);
  box-shadow: var(--shadow-lg);
}

.post-body { padding: 48px 0 80px; }

.post-body .container { max-width: 820px; }

.post-body p {
  font-size: 1.0625rem;
  line-height: 1.9;
  margin-bottom: 1.5rem;
  color: var(--text-2);
}

.post-body h2 {
  font-family: var(--font-heading);
  font-size: 1.625rem;
  font-weight: 700;
  margin: 3rem 0 1.25rem;
  letter-spacing: -.03em;
  padding-bottom: .5rem;
  border-bottom: 2px solid var(--border);
}

.post-body h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 2rem 0 .875rem;
  letter-spacing: -.01em;
}

.post-body ul, .post-body ol {
  margin-bottom: 1.5rem;
  padding-left: 1.75rem;
}

.post-body li {
  margin-bottom: .625rem;
  line-height: 1.8;
  font-size: 1.0125rem;
  color: var(--text-2);
}

.post-body img {
  border-radius: var(--r-lg);
  margin: 2rem 0;
  box-shadow: var(--shadow-md);
}

.post-body blockquote {
  border-left: 3px solid var(--primary);
  padding: 1rem 1.5rem;
  margin: 2rem 0;
  background: var(--primary-subtle);
  border-radius: 0 var(--r) var(--r) 0;
  color: var(--text-2);
}

.post-body code {
  font-family: var(--mono);
  font-size: .875em;
  background: var(--bg-muted);
  padding: .125rem .375rem;
  border-radius: var(--r-xs);
  color: var(--c-sec);
}

.post-body pre {
  background: var(--navy);
  color: #E2E8F0;
  border-radius: var(--r-lg);
  padding: 1.5rem;
  overflow-x: auto;
  margin: 2rem 0;
  font-family: var(--mono);
  font-size: .875rem;
  line-height: 1.7;
  box-shadow: var(--shadow-lg);
}

.post-body pre code {
  background: none;
  padding: 0;
  color: inherit;
  font-size: inherit;
}

.post-body strong { color: var(--text); }

/* ── Pagination ──────────────────────────────── */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: .375rem;
  margin-top: 3rem;
}

.pagination a, .pagination span {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 .625rem;
  border-radius: var(--r-sm);
  border: 1px solid var(--border);
  font-size: .875rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: all var(--t);
}

.pagination a:hover {
  background: var(--bg-muted);
  border-color: var(--border-strong);
  color: var(--text);
}

.pagination .current {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

/* ── Archive Post Filters ────────────────────── */
.post-filters {
  display: flex;
  gap: .5rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
  padding: 1.25rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
}

.filter-btn {
  padding: .3125rem .875rem;
  border-radius: var(--r-xs);
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text-muted);
  font-size: .8125rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--t);
  font-family: var(--font);
  letter-spacing: .02em;
}

.filter-btn:hover, .filter-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}

/* ── Scroll Reveal ───────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .5s ease, transform .5s ease;
}
.reveal.visible { opacity: 1; transform: none; }

/* ── Home FAQ ────────────────────────────────── */
.faq-section-home {
  padding: 88px 0;
  background: var(--bg-subtle);
}

.faq-list {
  max-width: 760px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--r);
  background: var(--bg);
  margin-bottom: .625rem;
  overflow: hidden;
  transition: box-shadow var(--t), border-color var(--t);
}

.faq-item[open] {
  box-shadow: var(--shadow-sm);
  border-color: var(--border-strong);
}

.faq-item summary {
  padding: 1rem 1.25rem;
  font-weight: 600;
  font-size: .9375rem;
  color: var(--text);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
}

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

.faq-item summary::after {
  content: '';
  width: .5rem;
  height: .5rem;
  border-right: 2px solid var(--text-muted);
  border-bottom: 2px solid var(--text-muted);
  transform: rotate(45deg);
  transition: transform var(--t);
  flex-shrink: 0;
  margin-left: .75rem;
}

.faq-item[open] summary::after {
  transform: rotate(-135deg);
}

.faq-item > p {
  padding: 0 1.25rem 1.125rem;
  margin: 0;
  color: var(--text-muted);
  font-size: .9375rem;
  line-height: 1.75;
}

.faq-item > p a { color: var(--primary); }

.faq-more {
  text-align: center;
  margin-top: 2.5rem;
}

/* ── Tools ───────────────────────────────────── */
.tools-hero {
  background: var(--navy);
  color: white;
  padding: 88px 0 72px;
  position: relative;
  overflow: hidden;
}

.tools-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

.tools-hero .container {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(320px, .75fr);
  gap: 4rem;
  align-items: center;
}

.tools-hero h1 {
  font-family: var(--font-heading);
  font-size: 3rem;
  line-height: 1.1;
  letter-spacing: -.04em;
  margin-bottom: 1.25rem;
}

.tools-hero p {
  color: rgba(255,255,255,.68);
  max-width: 680px;
  line-height: 1.8;
  margin-bottom: 2rem;
}

.tools-hero-panel {
  display: grid;
  gap: 1rem;
}

.tool-stat {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--r-lg);
  padding: 1.25rem 1.5rem;
}

.tool-stat span {
  display: block;
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: .375rem;
}

.tool-stat p {
  margin: 0;
  color: rgba(255,255,255,.5);
  font-size: .875rem;
}

.tools-directory {
  padding: 72px 0;
  background: var(--bg);
}

.tool-link-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
}

.tool-link-card {
  display: flex;
  flex-direction: column;
  gap: .5rem;
  min-height: 150px;
  padding: 1.125rem;
  border: 1px solid var(--border);
  border-radius: var(--r);
  background: var(--bg);
  color: var(--text);
  transition: border-color var(--t), box-shadow var(--t), transform var(--t);
}

.tool-link-card:hover {
  color: var(--text);
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.tool-link-card strong {
  font-family: var(--font-heading);
  font-size: 1rem;
  line-height: 1.35;
}

.tool-link-card span {
  color: var(--text-muted);
  font-size: .875rem;
  line-height: 1.65;
}

.tool-section {
  padding: 72px 0;
  background: var(--bg);
}

.tool-section.alt { background: var(--bg-subtle); }

.tool-shell {
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  background: var(--bg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.tool-copy {
  padding: 1.75rem 2rem;
  border-bottom: 1px solid var(--border);
}

.tool-copy h2 {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  line-height: 1.25;
  letter-spacing: -.03em;
  margin: .875rem 0 .625rem;
}

.tool-copy p {
  color: var(--text-muted);
  max-width: 780px;
}

.tool-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, .92fr);
  gap: 0;
}

.tool-form {
  padding: 2rem;
  border-right: 1px solid var(--border);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.tool-form label {
  display: flex;
  flex-direction: column;
  gap: .375rem;
  color: var(--text-2);
  font-size: .875rem;
  font-weight: 600;
}

.tool-form input,
.tool-form select,
.tool-form textarea {
  width: 100%;
  border: 1.5px solid var(--border);
  border-radius: var(--r);
  background: var(--bg);
  color: var(--text);
  font: inherit;
  font-size: .9375rem;
  padding: .7rem .875rem;
  transition: border-color var(--t), box-shadow var(--t);
}

.tool-form textarea {
  min-height: 230px;
  resize: vertical;
  font-family: var(--mono);
  line-height: 1.55;
}

.tool-form input:focus,
.tool-form select:focus,
.tool-form textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

.tool-result {
  padding: 2rem;
  background: var(--bg-subtle);
  min-width: 0;
}

.result-label {
  color: var(--primary);
  font-size: .75rem;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
  margin-bottom: .875rem;
}

.tool-result pre {
  background: #020617;
  color: #E2E8F0;
  border-radius: var(--r);
  padding: 1rem;
  overflow: auto;
  font-size: .875rem;
  line-height: 1.65;
  margin-bottom: .875rem;
  white-space: pre-wrap;
  word-break: break-word;
}

.copy-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-strong);
  border-radius: var(--r-sm);
  background: var(--bg);
  color: var(--text-2);
  cursor: pointer;
  font-family: var(--font);
  font-weight: 600;
  font-size: .8125rem;
  padding: .4rem .75rem;
  margin-bottom: 1rem;
}

.copy-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.result-note {
  color: var(--text-muted);
  font-size: .9rem;
  line-height: 1.75;
}

.metric-stack {
  display: grid;
  gap: .75rem;
}

.metric {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: .875rem 1rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--r);
}

.metric span {
  color: var(--text-muted);
  font-size: .875rem;
}

.metric strong {
  font-family: var(--font-heading);
  font-size: 1rem;
}

.diagnose-list,
.advisor-result {
  display: grid;
  gap: 1rem;
}

.diagnose-item,
.advisor-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 1rem;
}

.diagnose-item h3,
.advisor-card h3 {
  font-family: var(--font-heading);
  font-size: 1.0625rem;
  margin-bottom: .5rem;
  letter-spacing: -.02em;
}

.diagnose-item p,
.advisor-card p {
  color: var(--text-muted);
  font-size: .9rem;
  line-height: 1.7;
  margin-bottom: .625rem;
}

.diagnose-item code {
  display: block;
  background: #020617;
  color: #E2E8F0;
  border-radius: var(--r-sm);
  padding: .75rem;
  overflow: auto;
  font-size: .8125rem;
  line-height: 1.55;
  white-space: pre-wrap;
}

.advisor-score {
  display: inline-flex;
  align-items: center;
  border-radius: var(--r-xs);
  background: var(--primary-subtle);
  color: var(--primary);
  font-size: .75rem;
  font-weight: 800;
  padding: .2rem .5rem;
  margin-bottom: .625rem;
}

.tool-explain {
  background: var(--bg-subtle);
}

.explain-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

/* ── Responsive ──────────────────────────────── */
@media (max-width: 1024px) {
  .post-grid { grid-template-columns: repeat(2, 1fr); }
  .tool-link-grid { grid-template-columns: repeat(2, 1fr); }
  .tools-hero .container,
  .tool-grid { grid-template-columns: 1fr; }
  .tool-form { border-right: none; border-bottom: 1px solid var(--border); }
  .explain-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .mobile-menu-toggle { display: flex; }

  .nav-cta { display: none; }

  .nav-menu {
    position: absolute;
    top: 64px; left: 0; right: 0;
    background: var(--bg);
    flex-direction: column;
    padding: .75rem 1.5rem 1.25rem;
    gap: 0;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    transform: translateY(-110%);
    opacity: 0;
    pointer-events: none;
    transition: all .25s ease;
  }

  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-menu a {
    padding: .625rem .5rem;
    border-radius: 0;
  }

  .nav-menu li { border-bottom: 1px solid var(--border); }
  .nav-menu li:last-child { border-bottom: none; }

  .dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    pointer-events: auto;
    box-shadow: none;
    border: none;
    background: transparent;
    padding-left: 1rem;
    min-width: auto;
    display: none;
  }
  .has-dropdown.open .dropdown-menu {
    display: block;
  }
  .has-dropdown > a::after {
    float: right;
    margin-top: 6px;
  }

  /* Hero: single column */
  .hero { padding: 64px 0; }
  .hero .container { grid-template-columns: 1fr; gap: 2.5rem; }
  .hero-visual { display: none; }
  .hero h1 { font-size: 2.25rem; }
  .hero-subtitle { font-size: 1rem; }
  .hero-stats { gap: 1.5rem; margin-top: 2.5rem; padding-top: 2rem; }
  .hero-stat-num { font-size: 1.875rem; }

  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; max-width: 300px; justify-content: center; }

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

  .post-item { grid-template-columns: 1fr; }
  .post-thumbnail img { height: 200px; min-height: 200px; }
  .post-info { padding: 1.25rem; }

  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .footer-bottom { flex-direction: column; gap: .5rem; text-align: center; }

  .newsletter-form { flex-direction: column; }

  .cookie-consent .container { flex-direction: column; text-align: center; }

  .post-header h1 { font-size: 1.75rem; }
  .post-hero-image img { height: 240px; }

  .section-heading h2 { font-size: 1.5rem; }

  .tools-hero { padding: 64px 0; }
  .tools-hero h1 { font-size: 2.25rem; }
  .tools-hero .container { gap: 2rem; }
  .tool-link-grid,
  .form-grid { grid-template-columns: 1fr; }
  .tool-copy,
  .tool-form,
  .tool-result { padding: 1.25rem; }
  .tool-copy h2 { font-size: 1.375rem; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
}

/* ── Homepage: Stage Filter ──────────────────── */
.stage-filter {
  display: flex;
  justify-content: center;
  gap: .5rem;
  flex-wrap: wrap;
  margin: 2.5rem 0 1.5rem;
}

.stage-filter-btn {
  padding: .5rem 1.125rem;
  border-radius: 999px;
  border: 1.5px solid var(--border);
  background: var(--bg);
  color: var(--text-muted);
  font-size: .875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--t);
  white-space: nowrap;
}

.stage-filter-btn:hover {
  border-color: var(--border-strong);
  color: var(--text);
}

.stage-filter-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
  font-weight: 600;
}

/* ── Homepage: Tools Grid ────────────────────── */
.homepage-tools {
  padding: 0 0 80px;
}

.tools-grid-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  max-width: 1000px;
  margin: 0 auto 1.25rem;
}

.tools-grid-row.row-2 {
  grid-template-columns: repeat(2, 1fr);
  max-width: 660px;
}

.homepage-tool-card {
  position: relative;
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: var(--r-lg);
  padding: 1.75rem;
  transition: all var(--t);
  display: flex;
  flex-direction: column;
}

.homepage-tool-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.homepage-tool-card .stage-badge {
  position: absolute;
  top: 14px;
  right: 14px;
  font-size: .6875rem;
  font-weight: 700;
  padding: .1875rem .625rem;
  border-radius: var(--r-xs);
  letter-spacing: .04em;
}

.stage-badge.prep { background: var(--c-tut-bg); color: var(--c-tut); }
.stage-badge.start { background: var(--c-bug-bg); color: var(--c-bug); }
.stage-badge.run { background: var(--c-prog-bg); color: var(--c-prog); }

.homepage-tool-card .tool-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--r);
  background: var(--primary-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  font-size: 1.25rem;
}

.homepage-tool-card h3 {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: .375rem;
  letter-spacing: -.02em;
}

.homepage-tool-card p {
  font-size: .875rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 1rem;
  flex: 1;
}

.homepage-tool-card .tool-meta {
  font-size: .8125rem;
  color: var(--text-light);
  font-weight: 500;
}

/* ── Homepage: AdSense Slot ──────────────────── */
.adsense-slot {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 2rem 24px;
  text-align: center;
}

.adsense-placeholder {
  background: var(--bg-muted);
  border: 2px dashed var(--border-strong);
  border-radius: var(--r-lg);
  padding: 3rem;
  color: var(--text-light);
  font-size: .875rem;
}

/* ── Homepage: Trust Bar ─────────────────────── */
.trust-bar {
  background: var(--bg-subtle);
  padding: 3.5rem 0;
  border-top: 1px solid var(--border);
}

.trust-grid {
  display: flex;
  justify-content: center;
  gap: 4rem;
  flex-wrap: wrap;
}

.trust-item {
  text-align: center;
}

.trust-item .num {
  display: block;
  font-family: var(--font-heading);
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
  margin-bottom: .375rem;
}

.trust-item .label {
  font-size: .875rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* ── Homepage: Articles (compact) ────────────── */
.latest-articles-home {
  padding: 80px 0;
  background: var(--bg);
}

.latest-articles-home .post-grid {
  margin-top: 2.5rem;
}

/* ── Homepage: Hero simplified ───────────────── */
.hero-simple .container {
  grid-template-columns: 1fr;
  justify-items: center;
}

.hero-simple .hero-visual {
  display: none;
}

.hero-simple .hero-content {
  max-width: 680px;
  margin: 0 auto;
  text-align: center;
}

.hero-simple .hero-stats {
  justify-content: center;
}

/* ── Reduced motion ──────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: 1ms !important; animation-duration: 1ms !important; }
  .reveal { opacity: 1; transform: none; }
}

/* ── vLLM Generator Page ─────────────────────── */
.vllm-page { padding: 48px 0 80px; }

.vllm-breadcrumb {
  font-size: .875rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}
.vllm-breadcrumb a { color: var(--text-muted); }
.vllm-breadcrumb a:hover { color: var(--primary); }

.vllm-hero { margin-bottom: 2.5rem; }
.vllm-hero h1 {
  font-family: var(--font-heading);
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -.03em;
  margin-bottom: .5rem;
}
.vllm-hero p { color: var(--text-muted); font-size: 1.0625rem; max-width: 640px; }

/* Mode toggle */
.mode-toggle {
  display: inline-flex;
  background: var(--bg-muted);
  border-radius: var(--r);
  padding: 4px;
  gap: 4px;
  margin-top: 1.25rem;
}
.mode-btn {
  padding: .5rem 1.25rem;
  border-radius: var(--r-sm);
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-weight: 600;
  font-size: .875rem;
  cursor: pointer;
  transition: all var(--t);
  font-family: var(--font);
}
.mode-btn.active {
  background: var(--bg);
  color: var(--text);
  box-shadow: var(--shadow-xs);
}

/* Stepper */
.stepper {
  display: flex;
  align-items: center;
  gap: .5rem;
  margin-bottom: 2rem;
  padding: 1rem 1.25rem;
  background: var(--bg-subtle);
  border-radius: var(--r-lg);
  border: 1px solid var(--border);
}
.stepper-step {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-size: .875rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  transition: color var(--t);
}
.stepper-step .num {
  width: 28px; height: 28px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  background: var(--bg-muted);
  border: 1.5px solid var(--border-strong);
  font-size: .8125rem;
  font-weight: 700;
  transition: all var(--t);
}
.stepper-step.active { color: var(--primary); }
.stepper-step.active .num { background: var(--primary); color: white; border-color: var(--primary); }
.stepper-step.completed { color: var(--text); }
.stepper-step.completed .num { background: var(--primary-subtle); color: var(--primary); border-color: var(--primary-light); }
.stepper-divider {
  flex: 1;
  height: 1px;
  background: var(--border);
  max-width: 40px;
}

/* Step content */
.step-content { display: none; }
.step-content.active { display: block; }

.step-actions {
  display: flex;
  gap: .75rem;
  margin-top: 1.5rem;
}

/* Form enhancements */
.vllm-form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}
.vllm-form-grid.full { grid-template-columns: 1fr; }

.vllm-form-grid label {
  display: flex;
  flex-direction: column;
  gap: .375rem;
  color: var(--text-2);
  font-size: .875rem;
  font-weight: 600;
}
.vllm-form-grid input,
.vllm-form-grid select {
  width: 100%;
  border: 1.5px solid var(--border);
  border-radius: var(--r);
  background: var(--bg);
  color: var(--text);
  font: inherit;
  font-size: .9375rem;
  padding: .7rem .875rem;
  transition: border-color var(--t), box-shadow var(--t);
}
.vllm-form-grid input:focus,
.vllm-form-grid select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

.vllm-form-grid .hint {
  font-size: .8125rem;
  color: var(--text-light);
  font-weight: 400;
}

/* Toggle switch */
.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .875rem 0;
  border-bottom: 1px solid var(--border);
}
.toggle-row:last-child { border-bottom: none; }
.toggle-row label { font-weight: 600; font-size: .9375rem; color: var(--text); }
.toggle-row .hint { font-size: .8125rem; color: var(--text-muted); font-weight: 400; }

.switch {
  position: relative;
  display: inline-block;
  width: 44px; height: 24px;
}
.switch input { opacity: 0; width: 0; height: 0; }
.slider {
  position: absolute;
  cursor: pointer;
  inset: 0;
  background: var(--border-strong);
  border-radius: 24px;
  transition: background var(--t);
}
.slider::before {
  content: '';
  position: absolute;
  height: 18px; width: 18px;
  left: 3px; bottom: 3px;
  background: white;
  border-radius: 50%;
  transition: transform var(--t);
}
.switch input:checked + .slider { background: var(--primary); }
.switch input:checked + .slider::before { transform: translateX(20px); }

/* Info cards */
.info-card {
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 1rem;
  margin-top: 1rem;
}
.info-card .info-row {
  display: flex;
  justify-content: space-between;
  padding: .375rem 0;
  font-size: .875rem;
}
.info-card .info-row span { color: var(--text-muted); }
.info-card .info-row strong { color: var(--text); font-weight: 600; }
.info-card .info-row strong.hf-id { font-family: var(--mono); font-size: .8125rem; }
.info-card .info-note {
  margin-top: .5rem;
  padding: .5rem .75rem;
  background: var(--c-bug-bg);
  color: var(--c-bug);
  border-radius: var(--r-sm);
  font-size: .8125rem;
}

/* VRAM check */
.vram-check {
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 1.5rem;
  margin: 2rem 0;
}
.vram-check-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}
.vram-check-header h4 {
  font-family: var(--font-heading);
  font-size: 1.0625rem;
  font-weight: 700;
}
.vram-status {
  font-size: .8125rem;
  font-weight: 700;
  padding: .25rem .625rem;
  border-radius: var(--r-xs);
}
.vram-status.safe { background: #DCFCE7; color: #15803D; }
.vram-status.warning { background: #FEF3C7; color: #B45309; }
.vram-status.danger { background: #FEE2E2; color: #B91C1C; }

.vram-breakdown { display: grid; gap: .375rem; margin-bottom: 1rem; }
.vram-row {
  display: flex;
  justify-content: space-between;
  font-size: .875rem;
}
.vram-row span { color: var(--text-muted); }
.vram-row strong { color: var(--text); font-weight: 600; }
.vram-row.total { padding-top: .375rem; border-top: 1px solid var(--border); margin-top: .25rem; }
.vram-row.total strong { font-size: 1rem; }
.vram-divider { height: 1px; background: var(--border); margin: .25rem 0; }

.vram-bar-wrap { margin-top: .75rem; }
.vram-bar-track {
  height: 8px;
  background: var(--bg-muted);
  border-radius: 4px;
  overflow: hidden;
}
.vram-bar-fill {
  height: 100%;
  border-radius: 4px;
  transition: width .3s ease;
}
.vram-bar-fill.safe { background: #22C55E; }
.vram-bar-fill.warning { background: #F59E0B; }
.vram-bar-fill.danger { background: #EF4444; }
.vram-bar-labels {
  display: flex;
  justify-content: space-between;
  font-size: .75rem;
  color: var(--text-light);
  margin-top: .375rem;
}

.vram-conflicts { margin-top: .875rem; }
.vram-conflicts p {
  font-size: .8125rem;
  color: var(--c-bug);
  background: var(--c-bug-bg);
  padding: .5rem .75rem;
  border-radius: var(--r-sm);
  margin-bottom: .375rem;
}
.vram-suggestions { margin-top: .875rem; }
.vram-suggestions p {
  font-size: .8125rem;
  color: var(--text-muted);
}

/* Command output */
.command-section { margin-top: 2rem; }
.command-section h3 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.format-tabs {
  display: flex;
  gap: .25rem;
  margin-bottom: .75rem;
}
.format-tab {
  padding: .5rem 1rem;
  border-radius: var(--r-sm);
  border: 1.5px solid var(--border);
  background: var(--bg);
  color: var(--text-muted);
  font-weight: 600;
  font-size: .875rem;
  cursor: pointer;
  transition: all var(--t);
  font-family: var(--font);
}
.format-tab.active {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}
.format-tab:hover:not(.active) { border-color: var(--border-strong); color: var(--text); }

.command-box {
  background: #020617;
  border-radius: var(--r-lg);
  padding: 1.5rem;
  overflow-x: auto;
}
.command-box pre {
  margin: 0;
  color: #E2E8F0;
  font-family: var(--mono);
  font-size: .875rem;
  line-height: 1.7;
  white-space: pre-wrap;
  word-break: break-word;
}
.command-actions {
  display: flex;
  gap: .75rem;
  margin-top: 1rem;
}

/* Related tools */
.related-tools {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}
.related-tools h3 {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 1rem;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
.related-card {
  display: flex;
  flex-direction: column;
  gap: .375rem;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--r);
  background: var(--bg);
  color: var(--text);
  transition: all var(--t);
}
.related-card:hover { border-color: var(--primary); box-shadow: var(--shadow-sm); }
.related-card strong { font-weight: 600; font-size: .9375rem; }
.related-card span { font-size: .8125rem; color: var(--text-muted); }

/* Advanced mode layout */
.advanced-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, .85fr);
  gap: 2rem;
  align-items: start;
}
.advanced-form { display: grid; gap: 1.25rem; }
.advanced-group {
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 1.25rem;
  background: var(--bg);
}
.advanced-group h4 {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 1rem;
  padding-bottom: .5rem;
  border-bottom: 1px solid var(--border);
}

/* Responsive */
@media (max-width: 1024px) {
  .vllm-form-grid { grid-template-columns: 1fr; }
  .advanced-grid { grid-template-columns: 1fr; }
  .related-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .vllm-hero h1 { font-size: 1.75rem; }
  .stepper { overflow-x: auto; padding: .75rem; }
  .stepper-divider { max-width: 20px; }
  .vram-check { padding: 1rem; }
  .command-box { padding: 1rem; }
}

/* =============================================
   部署错误知识库 — Deployment Error KB
   ============================================= */

.error-kb-page { padding: 0 0 48px; }

.error-kb-breadcrumb {
  font-size: 13px;
  color: var(--text-muted);
  margin: 16px 0 24px;
}
.error-kb-breadcrumb a {
  color: var(--text-muted);
  text-decoration: none;
}
.error-kb-breadcrumb a:hover { color: var(--primary); }

.error-kb-hero {
  margin-bottom: 32px;
}
.error-kb-hero h1 {
  font-size: 32px;
  font-weight: 800;
  color: var(--navy);
  margin-bottom: 8px;
}
.error-kb-hero p {
  color: var(--text-muted);
  font-size: 16px;
  margin-bottom: 12px;
}
.error-kb-count {
  font-size: 14px;
  color: var(--primary);
  font-weight: 600;
}

.error-kb-search {
  margin-bottom: 20px;
}
.error-kb-search input {
  width: 100%;
  max-width: 520px;
  padding: 12px 16px;
  font-size: 15px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
}
.error-kb-search input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}
.error-kb-search input::placeholder {
  color: var(--text-light);
}

.error-kb-tags {
  margin-bottom: 16px;
}
.error-kb-tags-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}
.error-kb-tag-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}
.error-kb-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 5px 12px;
  font-size: 13px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text-2);
  cursor: pointer;
  transition: all 0.15s ease;
  user-select: none;
}
.error-kb-tag:hover {
  border-color: var(--primary);
  color: var(--primary);
}
.error-kb-tag.active {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}
.error-kb-tag .tag-icon {
  font-size: 12px;
}

.error-kb-active-filters {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  min-height: 28px;
}
.error-kb-active-filters:empty { display: none; }
.error-kb-pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  font-size: 12px;
  border-radius: 12px;
  background: var(--primary-subtle);
  color: var(--primary);
}
.error-kb-pill button {
  background: none;
  border: none;
  color: var(--primary);
  cursor: pointer;
  font-size: 14px;
  line-height: 1;
  padding: 0 2px;
}
.error-kb-clear-btn {
  font-size: 12px;
  color: var(--text-muted);
  background: none;
  border: none;
  cursor: pointer;
  text-decoration: underline;
}
.error-kb-clear-btn:hover { color: var(--primary); }

.error-kb-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
@media (max-width: 767px) {
  .error-kb-grid { grid-template-columns: 1fr; }
  .error-kb-tag-group {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 4px;
    -webkit-overflow-scrolling: touch;
  }
}

.error-kb-card {
  position: relative;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  cursor: pointer;
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}
.error-kb-card:hover {
  box-shadow: 0 4px 16px rgba(15,23,42,0.08);
  border-color: var(--border-strong);
}
.error-kb-card.severity-warning { border-left: 4px solid #f59e0b; }
.error-kb-card.severity-error { border-left: 4px solid #ef4444; }
.error-kb-card.severity-critical { border-left: 4px solid #b91c1c; }
.error-kb-card.expanded { cursor: default; }

.error-kb-card-inner {
  padding: 16px;
}
.error-kb-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
}
.error-kb-card-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--navy);
  line-height: 1.4;
}
.error-kb-card-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-bottom: 8px;
}
.error-kb-badge {
  display: inline-block;
  padding: 2px 8px;
  font-size: 11px;
  font-weight: 600;
  border-radius: 4px;
}
.error-kb-badge.category {
  background: #eff6ff;
  color: #1d4ed8;
}
.error-kb-badge.tag {
  background: #f1f5f9;
  color: #475569;
}

.error-kb-card-symptoms {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.error-kb-card.expanded .error-kb-card-symptoms {
  -webkit-line-clamp: unset;
  display: block;
}

.error-kb-card-toggle {
  margin-top: 12px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}
.error-kb-card-toggle:hover { text-decoration: underline; }

.error-kb-details {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  animation: fadeIn 0.2s ease;
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}
.error-kb-details h4 {
  font-size: 13px;
  font-weight: 700;
  color: var(--navy);
  margin: 16px 0 8px;
}
.error-kb-details h4:first-child { margin-top: 0; }
.error-kb-cause {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.7;
}
.error-kb-fix-list {
  margin: 0;
  padding-left: 18px;
}
.error-kb-fix-list li {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.7;
  margin-bottom: 4px;
}

.error-kb-command {
  margin-bottom: 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}
.error-kb-command-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  background: var(--bg-muted);
  border-bottom: 1px solid var(--border);
}
.error-kb-command-desc {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
}
.error-kb-command-copy {
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  background: none;
  border: none;
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 4px;
}
.error-kb-command-copy:hover {
  background: var(--primary-subtle);
}
.error-kb-command-copy.copied {
  color: #16a34a;
}
.error-kb-command pre {
  margin: 0;
  padding: 12px;
  background: #0f172a;
  color: #e2e8f0;
  font-family: 'SF Mono', Monaco, 'Cascadia Code', monospace;
  font-size: 12.5px;
  line-height: 1.6;
  overflow-x: auto;
  white-space: pre;
}
.error-kb-command code {
  font-family: inherit;
  background: none;
  padding: 0;
}

.error-kb-related {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.error-kb-related a {
  display: inline-block;
  padding: 4px 10px;
  font-size: 12px;
  color: var(--primary);
  background: var(--primary-subtle);
  border-radius: 6px;
  text-decoration: none;
}
.error-kb-related a:hover {
  background: var(--primary-light);
}

.error-kb-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 48px 24px;
  color: var(--text-muted);
}
.error-kb-empty-icon {
  font-size: 48px;
  margin-bottom: 12px;
  opacity: 0.5;
}
.error-kb-empty h3 {
  font-size: 18px;
  color: var(--navy);
  margin-bottom: 8px;
}
.error-kb-empty p {
  font-size: 14px;
  margin-bottom: 16px;
}

.error-kb-related-tools {
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}
.error-kb-related-tools h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 16px;
}
.error-kb-related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
@media (max-width: 767px) {
  .error-kb-related-grid { grid-template-columns: 1fr; }
}
.error-kb-related-card {
  display: block;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  text-decoration: none;
  background: var(--bg);
  transition: box-shadow 0.15s ease, border-color 0.15s ease;
}
.error-kb-related-card:hover {
  box-shadow: 0 2px 12px rgba(15,23,42,0.06);
  border-color: var(--primary);
}
.error-kb-related-card strong {
  display: block;
  font-size: 14px;
  color: var(--navy);
  margin-bottom: 4px;
}
.error-kb-related-card span {
  font-size: 13px;
  color: var(--text-muted);
}

.no-js .error-kb-card .error-kb-details { display: block !important; }
.no-js .error-kb-card-toggle { display: none; }
.no-js .error-kb-search, .no-js .error-kb-tags, .no-js .error-kb-active-filters { display: none; }

/* =============================================
   部署选型助手 — Deployment Advisor
   ============================================= */

.advisor-page { padding: 0 0 80px; }

.advisor-breadcrumb {
  font-size: 13px;
  color: var(--text-muted);
  margin: 16px 0 24px;
}
.advisor-breadcrumb a {
  color: var(--text-muted);
  text-decoration: none;
}
.advisor-breadcrumb a:hover { color: var(--primary); }

.advisor-hero { margin-bottom: 32px; }
.advisor-hero h1 {
  font-family: var(--font-heading);
  font-size: 32px;
  font-weight: 800;
  color: var(--navy);
  margin-bottom: 8px;
  letter-spacing: -0.03em;
}
.advisor-hero p {
  color: var(--text-muted);
  font-size: 16px;
  max-width: 560px;
}

.advisor-step-title {
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.advisor-question { margin-bottom: 32px; }
.advisor-question h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.advisor-question h3 .required {
  color: var(--c-sec);
  font-size: 14px;
}
.advisor-question h3 .hint {
  color: var(--text-light);
  font-weight: 400;
  font-size: 14px;
}
.advisor-question.error h3 { color: var(--c-sec); }

/* Option cards */
.option-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}
.option-grid.compact { grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); }
.option-grid.multi { grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); }

.option-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px;
  border: 1.5px solid var(--border);
  border-radius: var(--r);
  background: var(--bg);
  cursor: pointer;
  transition: all var(--t);
  position: relative;
}
.option-card:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-sm);
}
.option-card input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}
.option-card:has(input:checked) {
  border-color: var(--primary);
  background: var(--primary-subtle);
  box-shadow: 0 0 0 3px var(--primary-light);
}
.option-card .card-icon {
  font-size: 24px;
  line-height: 1;
}
.option-card strong {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
}
.option-card span {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.55;
}
.option-card:has(input:checked) strong { color: var(--primary-dark); }

/* Slider */
.slider-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.slider-group input[type="range"] {
  width: 100%;
  max-width: 480px;
  accent-color: var(--primary);
}
.slider-value-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
}
.slider-value-wrap input[type="number"] {
  width: 80px;
  padding: 8px 10px;
  border: 1.5px solid var(--border);
  border-radius: var(--r);
  font-size: 15px;
  color: var(--text);
  background: var(--bg);
}
.concurrency-label {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
  padding: 4px 10px;
  background: var(--bg-muted);
  border-radius: var(--r-xs);
}
.slider-marks {
  display: flex;
  justify-content: space-between;
  max-width: 480px;
  font-size: 12px;
  color: var(--text-light);
  padding: 0 4px;
}

/* Result layout */
.advisor-result-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 24px;
  margin-bottom: 32px;
}

/* Best card */
.advisor-best-card {
  background: var(--bg);
  border: 1.5px solid var(--primary);
  border-radius: var(--r-lg);
  padding: 24px;
  box-shadow: var(--shadow-md);
}
.best-card-header {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 16px;
}
.best-card-icon {
  font-size: 36px;
  line-height: 1;
  flex-shrink: 0;
}
.best-card-title { flex: 1; min-width: 0; }
.best-card-title h2 {
  font-family: var(--font-heading);
  font-size: 22px;
  font-weight: 800;
  color: var(--navy);
  margin-bottom: 2px;
  letter-spacing: -0.02em;
}
.best-card-title p {
  font-size: 14px;
  color: var(--text-muted);
}
.best-card-score {
  text-align: right;
  flex-shrink: 0;
}
.best-card-score .score-label {
  display: block;
  font-size: 11px;
  font-weight: 700;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.best-card-score .score-value {
  display: block;
  font-family: var(--font-heading);
  font-size: 28px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.1;
}

.best-card-reasons {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}
.reason-pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 600;
  border-radius: 999px;
  background: var(--primary-subtle);
  color: var(--primary);
}

.best-card-pros-cons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 20px;
}
.best-card-pros-cons h4 {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 8px;
}
.best-card-pros-cons ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.best-card-pros-cons li {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.7;
  padding: 2px 0;
}

.best-card-meta {
  display: flex;
  gap: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}
.meta-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.meta-item span {
  font-size: 12px;
  color: var(--text-muted);
}
.meta-item strong {
  font-size: 14px;
  color: var(--text);
  font-weight: 600;
}

/* Comparison table */
.advisor-comparison h3 {
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 14px;
  letter-spacing: -0.02em;
}
.comparison-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--r);
}
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.comparison-table th,
.comparison-table td {
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.comparison-table th {
  font-weight: 700;
  color: var(--text-muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  background: var(--bg-subtle);
}
.comparison-table td {
  color: var(--text-2);
}
.comparison-table .col-best {
  background: var(--primary-subtle);
  color: var(--primary-dark);
}
.comparison-table tr:last-child td { border-bottom: none; }

/* Models */
.advisor-models { margin-bottom: 32px; }
.advisor-models h3 {
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 14px;
  letter-spacing: -0.02em;
}
.model-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 14px;
}
.model-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 16px;
  transition: box-shadow var(--t), border-color var(--t);
}
.model-card:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-sm);
}
.model-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}
.model-header strong {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
}
.model-params {
  font-size: 12px;
  color: var(--text-light);
  font-weight: 500;
  flex-shrink: 0;
}
.model-vram {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 10px;
}
.model-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 12px;
}
.tag-pill {
  display: inline-flex;
  padding: 3px 8px;
  font-size: 12px;
  font-weight: 500;
  border-radius: var(--r-xs);
  background: var(--bg-muted);
  color: var(--text-muted);
}
.btn-sm {
  padding: 6px 14px;
  font-size: 13px;
}

/* Next steps */
.advisor-next-steps { margin-bottom: 32px; }
.advisor-next-steps h3 {
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 14px;
  letter-spacing: -0.02em;
}
.advisor-next-steps ol {
  margin: 0 0 20px;
  padding-left: 20px;
}
.advisor-next-steps li {
  font-size: 15px;
  color: var(--text-2);
  line-height: 1.8;
  margin-bottom: 8px;
}
.step-icon {
  display: inline-block;
  width: 24px;
  text-align: center;
}
.next-step-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

/* Alerts */
.advisor-alert {
  padding: 14px 18px;
  border-radius: var(--r);
  margin-bottom: 16px;
  font-size: 14px;
  line-height: 1.6;
}
.advisor-alert strong {
  display: block;
  margin-bottom: 4px;
  font-weight: 700;
}
.advisor-alert-warning {
  background: var(--c-bug-bg);
  border: 1px solid var(--c-bug-light, #FED7AA);
  color: var(--c-bug);
}
.advisor-alert-info {
  background: var(--c-tut-bg);
  border: 1px solid var(--c-tut-light, #BAE6FD);
  color: var(--c-tut);
}

/* Reset */
.advisor-reset {
  text-align: center;
  padding: 24px 0;
}

/* Responsive */
@media (max-width: 1024px) {
  .advisor-result-layout { grid-template-columns: 1fr; }
  .best-card-pros-cons { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .advisor-hero h1 { font-size: 26px; }
  .option-grid { grid-template-columns: 1fr; }
  .option-grid.compact,
  .option-grid.multi { grid-template-columns: repeat(2, 1fr); }
  .comparison-table th,
  .comparison-table td { padding: 8px 10px; font-size: 13px; }
  .next-step-actions { flex-direction: column; }
  .next-step-actions .btn { width: 100%; max-width: 300px; justify-content: center; }
}

@media (max-width: 480px) {
  .option-grid.compact,
  .option-grid.multi { grid-template-columns: 1fr; }
  .model-grid { grid-template-columns: 1fr; }
}

/* =============================================
   显存估算器 — Memory Calculator
   ============================================= */

.memory-page { padding: 0 0 80px; }

.memory-breadcrumb {
  font-size: 13px;
  color: var(--text-muted);
  margin: 16px 0 24px;
}
.memory-breadcrumb a {
  color: var(--text-muted);
  text-decoration: none;
}
.memory-breadcrumb a:hover { color: var(--primary); }

.memory-hero { margin-bottom: 32px; }
.memory-hero h1 {
  font-family: var(--font-heading);
  font-size: 32px;
  font-weight: 800;
  color: var(--navy);
  margin-bottom: 8px;
  letter-spacing: -0.03em;
}
.memory-hero p {
  color: var(--text-muted);
  font-size: 16px;
  max-width: 600px;
}

/* Layout */
.memory-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 32px;
  align-items: start;
  margin-bottom: 48px;
}

/* Form panel */
.memory-form-panel {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.memory-form-group {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 20px;
}
.memory-form-group h3 {
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 14px;
  letter-spacing: -0.01em;
}
.memory-form-group label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 14px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-2);
}
.memory-form-group label:last-child { margin-bottom: 0; }
.memory-form-group input,
.memory-form-group select {
  width: 100%;
  border: 1.5px solid var(--border);
  border-radius: var(--r);
  background: var(--bg);
  color: var(--text);
  font: inherit;
  font-size: 15px;
  padding: 10px 12px;
  transition: border-color var(--t), box-shadow var(--t);
}
.memory-form-group input:focus,
.memory-form-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}
.memory-form-group .hint {
  font-size: 13px;
  color: var(--text-light);
  font-weight: 400;
}
.memory-form-group .form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

/* Custom toggle */
#customModelToggleWrap {
  flex-direction: row;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 12px;
}
#customModelToggleWrap input { width: auto; }

/* Result panel */
.memory-result-panel {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* Status card */
.memory-status-card {
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: var(--r-lg);
  padding: 24px;
  transition: border-color var(--t);
}
.memory-status-card.safe { border-color: #22C55E; }
.memory-status-card.warning { border-color: #F59E0B; }
.memory-status-card.danger { border-color: #EF4444; }

.status-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 18px;
  gap: 16px;
}
.status-badge {
  display: inline-flex;
  padding: 6px 12px;
  border-radius: var(--r-xs);
  font-size: 13px;
  font-weight: 700;
}
.status-badge.safe { background: #DCFCE7; color: #15803D; }
.status-badge.warning { background: #FEF3C7; color: #B45309; }
.status-badge.danger { background: #FEE2E2; color: #B91C1C; }

.status-numbers {
  text-align: right;
}
.status-numbers div {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 4px;
}
.status-numbers div:last-child { margin-bottom: 0; }
.status-numbers .unit {
  font-size: 13px;
  color: var(--text-light);
}
.status-numbers .label {
  font-size: 12px;
  color: var(--text-light);
}
.status-numbers span:first-child {
  font-family: var(--font-heading);
  font-size: 24px;
  font-weight: 800;
  color: var(--navy);
}

.status-bar-track {
  height: 10px;
  background: var(--bg-muted);
  border-radius: 5px;
  overflow: hidden;
}
.status-bar-fill {
  height: 100%;
  border-radius: 5px;
  transition: width .3s ease;
}
.status-bar-fill.safe { background: #22C55E; }
.status-bar-fill.warning { background: #F59E0B; }
.status-bar-fill.danger { background: #EF4444; }

.status-bar-labels {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-light);
  margin-top: 6px;
}

/* Stacked bar chart */
.memory-chart h4 {
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 14px;
  letter-spacing: -0.02em;
}
.stacked-bar {
  display: flex;
  height: 40px;
  border-radius: var(--r);
  overflow: hidden;
  background: var(--bg-muted);
  margin-bottom: 14px;
}
.stacked-segment {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  transition: width .3s ease;
  min-width: 0;
  position: relative;
}
.stacked-segment .seg-label {
  font-size: 11px;
  font-weight: 600;
  color: white;
  white-space: nowrap;
  text-shadow: 0 1px 2px rgba(0,0,0,.3);
  padding: 0 4px;
}
.stacked-segment.weight { background: #3B82F6; }
.stacked-segment.kv { background: #8B5CF6; }
.stacked-segment.activation { background: #F59E0B; }
.stacked-segment.overhead { background: #6B7280; }

.chart-legend {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px 16px;
}
.legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
}
.legend-item .dot {
  width: 10px;
  height: 10px;
  border-radius: 3px;
  flex-shrink: 0;
}
.legend-item .dot.weight { background: #3B82F6; }
.legend-item .dot.kv { background: #8B5CF6; }
.legend-item .dot.activation { background: #F59E0B; }
.legend-item .dot.overhead { background: #6B7280; }
.legend-item strong {
  margin-left: auto;
  color: var(--text);
  font-weight: 600;
}

/* GPU allocation */
.memory-gpu-allocation h4 {
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 14px;
  letter-spacing: -0.02em;
}
.gpu-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 12px;
}
.gpu-card {
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: var(--r);
  padding: 14px;
  text-align: center;
  transition: border-color var(--t);
}
.gpu-card.warning { border-color: #F59E0B; }
.gpu-card.danger { border-color: #EF4444; }
.gpu-card-header {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 6px;
}
.gpu-card-vram {
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 800;
  color: var(--navy);
  margin-bottom: 8px;
}
.gpu-card-bar {
  height: 6px;
  background: var(--bg-muted);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 6px;
}
.gpu-card-fill {
  height: 100%;
  border-radius: 3px;
  background: #3B82F6;
  transition: width .3s ease;
}
.gpu-card.warning .gpu-card-fill { background: #F59E0B; }
.gpu-card.danger .gpu-card-fill { background: #EF4444; }
.gpu-card-pct {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
}

/* Suggestions */
.memory-suggestions h4 {
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 14px;
  letter-spacing: -0.02em;
}
.suggestion-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.suggestion-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 14px;
  background: var(--primary-subtle);
  border: 1px solid var(--primary-light);
  border-radius: var(--r);
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.6;
}
.suggestion-icon {
  flex-shrink: 0;
  font-size: 16px;
  line-height: 1.4;
}

/* Responsive */
@media (max-width: 1024px) {
  .memory-layout { grid-template-columns: 1fr; }
  .memory-form-group .form-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .memory-hero h1 { font-size: 26px; }
  .chart-legend { grid-template-columns: 1fr; }
  .gpu-cards { grid-template-columns: repeat(2, 1fr); }
  .status-header { flex-direction: column; }
  .status-numbers { text-align: left; }
}

/* ══════════════════════════════════════════════
   Cost Calculator
   ══════════════════════════════════════════════ */

:root {
  --cost-local: #10b981;
  --cost-api: #f59e0b;
  --cost-power: #3b82f6;
  --cost-ops: #8b5cf6;
  --cost-diff: #ef4444;
}

.cost-page { padding: 0 0 48px; }

.cost-breadcrumb {
  padding: 16px 0;
  font-size: 13px;
  color: var(--text-muted);
}
.cost-breadcrumb a { color: var(--text-muted); text-decoration: none; }
.cost-breadcrumb a:hover { color: var(--primary); }

.cost-hero {
  padding: 32px 0 24px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 24px;
}
.cost-hero h1 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
}
.cost-hero p {
  color: var(--text-muted);
  font-size: 15px;
  max-width: 640px;
}

.cost-layout {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 32px;
  align-items: start;
}

/* Form panel */
.cost-form-panel {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.cost-form-group {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 20px;
}
.cost-form-group h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

.cost-form-group .form-grid {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.cost-form-group label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
}

.cost-form-group input[type="number"] {
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  background: var(--bg);
  color: var(--text);
  width: 100%;
}
.cost-form-group input[type="number"]:focus {
  outline: none;
  border-color: var(--primary);
}

.cost-form-group .hint {
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 400;
}

/* Result panel */
.cost-result-panel {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* Summary card */
.cost-summary-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
}

.cost-summary-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.cost-verdict {
  font-size: 18px;
  font-weight: 700;
}
.cost-verdict.local-win { color: var(--cost-local); }
.cost-verdict.api-win  { color: var(--cost-api); }
.cost-verdict.tie      { color: var(--text-muted); }

.cost-summary-saving {
  font-size: 14px;
  color: var(--text-muted);
}

.cost-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.cost-metric {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.cost-metric-label {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.3px;
}
.cost-metric-value {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
}

/* Chart blocks */
.cost-chart-block {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
}
.cost-chart-block h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 16px;
}
.chart-subtitle {
  font-size: 12px;
  color: var(--text-muted);
  margin: -12px 0 12px;
}

/* Compare bars */
.cost-compare-bars {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.cost-bar-row {
  display: grid;
  grid-template-columns: 110px 1fr auto;
  align-items: center;
  gap: 12px;
}
.cost-bar-row.diff {
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px dashed var(--border);
}

.cost-bar-label {
  font-size: 13px;
  color: var(--text-muted);
  text-align: right;
}

.cost-bar-track {
  height: 24px;
  background: var(--bg);
  border-radius: 6px;
  overflow: hidden;
}

.cost-bar-fill {
  height: 100%;
  border-radius: 6px;
  transition: width 0.4s ease;
}
.cost-bar-fill.local { background: var(--cost-local); }
.cost-bar-fill.api   { background: var(--cost-api); }
.cost-bar-fill.diff  { background: var(--cost-diff); }

.cost-bar-value {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  min-width: 80px;
  text-align: right;
}

/* Pie chart */
.cost-composition {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.cost-pie {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  flex-shrink: 0;
  transition: background 0.4s ease;
}

.cost-pie-legend {
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.pie-legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
}

.pie-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.pie-label {
  color: var(--text-muted);
}

.pie-value {
  color: var(--text);
  margin-left: auto;
}

/* Trend chart */
.cost-trend-chart {
  display: flex;
  gap: 8px;
  height: 200px;
}

.trend-y-axis {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  font-size: 10px;
  color: var(--text-muted);
  text-align: right;
  padding-right: 8px;
  min-width: 48px;
}

.trend-cols {
  display: flex;
  flex: 1;
  align-items: flex-end;
  gap: 16px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
  position: relative;
}

.trend-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}
.trend-col.current .trend-xlabel {
  color: var(--primary);
  font-weight: 600;
}

.trend-bars {
  display: flex;
  align-items: flex-end;
  gap: 4px;
  width: 100%;
  height: 100%;
  justify-content: center;
}

.trend-bar {
  width: 16px;
  border-radius: 4px 4px 0 0;
  transition: height 0.4s ease;
  min-height: 2px;
}
.trend-bar.local { background: var(--cost-local); }
.trend-bar.api   { background: var(--cost-api); }

.trend-xlabel {
  font-size: 11px;
  color: var(--text-muted);
}

.cost-trend-legend {
  display: flex;
  gap: 16px;
  margin-top: 12px;
  font-size: 12px;
  color: var(--text-muted);
}

.trend-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 3px;
  margin-right: 4px;
}
.trend-dot.local { background: var(--cost-local); }
.trend-dot.api   { background: var(--cost-api); }

/* Advice */
.cost-advice {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
}
.cost-advice h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}
.cost-advice p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* Responsive */
@media (max-width: 1024px) {
  .cost-layout { grid-template-columns: 1fr; }
  .cost-metrics { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .cost-hero h1 { font-size: 26px; }
  .cost-metrics { grid-template-columns: 1fr; }
  .cost-bar-row { grid-template-columns: 80px 1fr auto; gap: 8px; }
  .cost-composition { flex-direction: column; align-items: flex-start; }
  .trend-bars { gap: 2px; }
  .trend-bar { width: 10px; }
}