/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'Nunito', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: #F5F7FA;
  color: #1A1A2E;
  line-height: 1.7;
  letter-spacing: 0.01em;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; }

/* ===== CSS VARIABLES ===== */
:root {
  --primary: #5B4FE9;
  --primary-end: #A855F7;
  --primary-grad: linear-gradient(135deg, #5B4FE9, #A855F7);
  --accent: #F59E0B;
  --success: #10B981;
  --danger: #EF4444;
  --bg: #F5F7FA;
  --bg-white: #FFFFFF;
  --bg-card: #FFFFFF;
  --border: #E5E7EB;
  --text-main: #1A1A2E;
  --text-sub: #6B7280;
  --text-light: #9CA3AF;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.10);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.13);
  --radius: 12px;
  --radius-lg: 20px;
  --container: 1200px;
}

/* ===== CONTAINER ===== */
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* ===== HEADER ===== */
.header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}
.header-inner {
  display: flex; align-items: center; gap: 32px;
  height: 64px;
}
.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-icon {
  width: 36px; height: 36px; border-radius: 10px;
  background: var(--primary-grad);
  display: flex; align-items: center; justify-content: center;
  color: #fff;
}
.logo-icon svg { width: 18px; height: 18px; }
.logo-text { font-size: 1.1rem; font-weight: 800; color: var(--text-main); font-family: 'Plus Jakarta Sans', 'PingFang SC', sans-serif; letter-spacing: -0.3px; }
.logo-text em { font-style: normal; color: var(--primary); }
.nav { display: flex; align-items: center; gap: 4px; flex: 1; }
.nav-link {
  padding: 6px 14px; border-radius: 8px;
  font-size: 0.9rem; font-weight: 600; color: var(--text-sub);
  transition: all 0.2s;
  font-family: 'Plus Jakarta Sans', 'PingFang SC', sans-serif;
  letter-spacing: 0.01em;
}
.nav-link:hover, .nav-link.active { color: var(--primary); background: rgba(91,79,233,0.08); }
.header-right { display: flex; align-items: center; gap: 16px; margin-left: auto; }
.update-badge {
  display: flex; align-items: center; gap: 6px;
  font-size: 0.78rem; color: var(--success);
  background: rgba(16,185,129,0.1); border-radius: 20px;
  padding: 4px 12px;
}
.update-badge .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--success); animation: pulse 2s infinite;
}
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:0.4} }
.hamburger { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 4px; }
.hamburger span { display: block; width: 22px; height: 2px; background: var(--text-main); border-radius: 2px; transition: 0.3s; }

/* ===== HERO ===== */
.hero {
  background: linear-gradient(160deg, #EEF2FF 0%, #F5F3FF 50%, #FDF4FF 100%);
  padding: 48px 0 0;
  border-bottom: 1px solid var(--border);
}
.breadcrumb { font-size: 0.82rem; color: var(--text-light); margin-bottom: 20px; }
.breadcrumb .sep { margin: 0 6px; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--primary-grad); color: #fff;
  font-size: 0.78rem; font-weight: 600;
  padding: 5px 14px; border-radius: 20px; margin-bottom: 16px;
}
.hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800; line-height: 1.2;
  color: var(--text-main); margin-bottom: 16px;
  font-family: 'Plus Jakarta Sans', 'PingFang SC', sans-serif;
  letter-spacing: -0.5px;
}
.hl { background: var(--primary-grad); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-desc { font-size: 1rem; color: var(--text-sub); max-width: 680px; margin-bottom: 28px; }
.hero-meta {
  display: flex; align-items: center; gap: 0;
  background: var(--bg-white); border-radius: var(--radius);
  border: 1px solid var(--border); padding: 16px 24px;
  width: fit-content; margin-bottom: 32px;
  box-shadow: var(--shadow-sm);
}
.meta-item { text-align: center; padding: 0 20px; }
.meta-item strong { display: block; font-size: 0.78rem; color: var(--text-light); text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 2px; }
.meta-item span { font-size: 0.95rem; font-weight: 600; color: var(--text-main); }
.meta-div { width: 1px; height: 36px; background: var(--border); }

/* Filter Bar */
.filter-bar {
  display: flex; align-items: center; gap: 12px;
  padding: 16px 0; flex-wrap: wrap;
}
.filter-label { font-size: 0.85rem; color: var(--text-sub); font-weight: 500; white-space: nowrap; }
.filter-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.filter-tag {
  padding: 6px 16px; border-radius: 20px;
  font-size: 0.83rem; font-weight: 500;
  border: 1.5px solid var(--border);
  background: var(--bg-white); color: var(--text-sub);
  cursor: pointer; transition: all 0.2s;
}
.filter-tag:hover { border-color: var(--primary); color: var(--primary); }
.filter-tag.active { background: var(--primary-grad); color: #fff; border-color: transparent; }

/* ===== RANKING SECTION ===== */
.ranking-section { padding: 40px 0 60px; }
.editor-note {
  display: flex; align-items: flex-start; gap: 10px;
  background: #FFFBEB; border: 1px solid #FDE68A;
  border-radius: var(--radius); padding: 12px 16px;
  font-size: 0.82rem; color: #92400E;
  margin-bottom: 28px; line-height: 1.5;
}
.editor-note svg { flex-shrink: 0; margin-top: 1px; color: #F59E0B; }

/* ===== RANK CARD ===== */
.rank-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin-bottom: 20px;
  display: grid;
  grid-template-columns: 60px 140px 1fr 160px;
  gap: 24px;
  align-items: start;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.25s, transform 0.25s;
  position: relative;
  overflow: hidden;
}
.rank-card::before {
  content: '';
  position: absolute; left: 0; top: 0; bottom: 0;
  width: 4px;
  background: var(--border);
  border-radius: 4px 0 0 4px;
}
.rank-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); }
.rank-1 { border-color: rgba(91,79,233,0.3); }
.rank-1::before { background: var(--primary-grad); }

/* Rank Number */
.rank-num {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding-top: 4px;
}
.rank-num .num {
  font-size: 2.2rem; font-weight: 900;
  color: var(--text-light); line-height: 1;
  font-family: 'Space Grotesk', sans-serif;
}
.rank-1 .rank-num .num { background: var(--primary-grad); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.rank-num .crown { font-size: 1.1rem; margin-top: 2px; }

/* Logo */
.rank-logo { display: flex; flex-direction: column; align-items: center; gap: 12px; }
.logo-placeholder {
  width: 100px; height: 60px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 700; font-size: 0.8rem;
  text-align: center; line-height: 1.3;
}
.rank-score { text-align: center; }
.stars { color: var(--accent); font-size: 0.75rem; letter-spacing: 1px; }
.score-num { font-size: 1.3rem; font-weight: 800; color: var(--text-main); font-family: 'Space Grotesk', sans-serif; }
.score-num span { font-size: 0.75rem; color: var(--text-light); font-weight: 400; }

/* Rank Info */
.rank-info { min-width: 0; }
.rank-header { margin-bottom: 14px; }
.rank-name {
  font-size: 1.1rem; font-weight: 700; color: var(--text-main);
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
  margin-bottom: 4px;
  font-family: 'Plus Jakarta Sans', 'PingFang SC', sans-serif;
}
.rank-tag {
  font-size: 0.7rem; font-weight: 600; padding: 2px 8px;
  border-radius: 4px; background: rgba(91,79,233,0.1);
  color: var(--primary); white-space: nowrap;
}
.editor-pick { background: var(--primary-grad); color: #fff; }
.new-tag { background: rgba(16,185,129,0.1); color: var(--success); }
.free-tag { background: rgba(245,158,11,0.1); color: var(--accent); }
.rank-slogan { font-size: 0.83rem; color: var(--text-sub); }

/* Score Bars */
.rank-scores { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 20px; margin-bottom: 16px; }
.score-item { display: flex; align-items: center; gap: 8px; }
.score-bar-wrap { flex: 1; height: 5px; background: #E5E7EB; border-radius: 3px; overflow: hidden; }
.score-bar { height: 100%; background: var(--primary-grad); border-radius: 3px; transition: width 1s ease; }
.score-label { font-size: 0.75rem; color: var(--text-sub); white-space: nowrap; min-width: 52px; }
.score-val { font-size: 0.78rem; font-weight: 700; color: var(--primary); min-width: 24px; text-align: right; }

/* Pros Cons */
.rank-pros-cons { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 14px; }
.pros, .cons { background: #F9FAFB; border-radius: 8px; padding: 10px 12px; }
.pc-title { font-size: 0.75rem; font-weight: 700; margin-bottom: 6px; }
.pros-title { color: var(--success); }
.cons-title { color: var(--danger); }
.pros li, .cons li { font-size: 0.78rem; color: var(--text-sub); padding: 2px 0; }
.pros li::before { content: '✓ '; color: var(--success); font-weight: 700; }
.cons li::before { content: '✗ '; color: var(--danger); font-weight: 700; }

/* Detail Row */
.rank-detail-row { display: flex; gap: 12px; flex-wrap: wrap; }
.detail-item { display: flex; flex-direction: column; gap: 2px; }
.di-label { font-size: 0.7rem; color: var(--text-light); text-transform: uppercase; letter-spacing: 0.3px; }
.di-val { font-size: 0.82rem; font-weight: 600; color: var(--text-main); }

/* CTA */
.rank-cta {
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  padding-top: 4px;
}
.btn-rank-primary {
  display: block; width: 100%; text-align: center;
  padding: 11px 16px; border-radius: 10px;
  background: var(--primary-grad); color: #fff;
  font-size: 0.88rem; font-weight: 700;
  transition: opacity 0.2s, transform 0.2s;
  box-shadow: 0 4px 14px rgba(91,79,233,0.35);
}
.btn-rank-primary:hover { opacity: 0.9; transform: translateY(-1px); }
.btn-rank-secondary {
  display: block; width: 100%; text-align: center;
  padding: 9px 16px; border-radius: 10px;
  border: 1.5px solid var(--border); color: var(--text-sub);
  font-size: 0.83rem; font-weight: 500;
  transition: all 0.2s;
}
.btn-rank-secondary:hover { border-color: var(--primary); color: var(--primary); }
.cta-note { font-size: 0.72rem; color: var(--text-light); text-align: center; }

/* ===== SECTION COMMON ===== */
.section { padding: 72px 0; }
.section-header { text-align: center; margin-bottom: 48px; }
.section-badge {
  display: inline-block; background: rgba(91,79,233,0.1);
  color: var(--primary); font-size: 0.78rem; font-weight: 700;
  padding: 4px 14px; border-radius: 20px; margin-bottom: 12px;
  text-transform: uppercase; letter-spacing: 0.5px;
}
.section-title { font-size: clamp(1.5rem, 3vw, 2.2rem); font-weight: 800; color: var(--text-main); margin-bottom: 12px; font-family: 'Plus Jakarta Sans', 'PingFang SC', sans-serif; letter-spacing: -0.4px; }
.section-desc { font-size: 1rem; color: var(--text-sub); max-width: 560px; margin: 0 auto; }

/* ===== COMPARE TABLE ===== */
.compare-section { background: var(--bg-white); }
.table-wrap { overflow-x: auto; border-radius: var(--radius-lg); border: 1px solid var(--border); box-shadow: var(--shadow-sm); }
.compare-table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
.compare-table thead { background: linear-gradient(135deg, #EEF2FF, #F5F3FF); }
.compare-table th {
  padding: 14px 16px; text-align: left;
  font-size: 0.78rem; font-weight: 700; color: var(--text-sub);
  text-transform: uppercase; letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border); white-space: nowrap;
}
.compare-table td { padding: 14px 16px; border-bottom: 1px solid #F3F4F6; color: var(--text-main); }
.compare-table tbody tr:last-child td { border-bottom: none; }
.compare-table tbody tr:hover td { background: #F9FAFB; }
.highlight-row td { background: rgba(91,79,233,0.04); }
.highlight-row:hover td { background: rgba(91,79,233,0.08) !important; }
.t-score { font-weight: 800; font-size: 1rem; color: var(--text-sub); }
.t-score.best { background: var(--primary-grad); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; font-size: 1.1rem; }
.t-yes { color: var(--success); font-weight: 700; }
.t-no { color: var(--text-light); }
.t-btn {
  display: inline-block; padding: 5px 14px;
  background: var(--primary-grad); color: #fff;
  border-radius: 6px; font-size: 0.78rem; font-weight: 600;
  transition: opacity 0.2s;
}
.t-btn:hover { opacity: 0.85; }

/* ===== CATEGORIES ===== */
.categories-section { background: var(--bg); }
.cat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.cat-card {
  background: var(--bg-white); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 24px;
  box-shadow: var(--shadow-sm); transition: box-shadow 0.25s, transform 0.25s;
}
.cat-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.cat-icon { font-size: 2rem; margin-bottom: 12px; }
.cat-card h3 { font-size: 1rem; font-weight: 700; color: var(--text-main); margin-bottom: 8px; }
.cat-card p { font-size: 0.82rem; color: var(--text-sub); line-height: 1.6; margin-bottom: 16px; }
.cat-picks { display: flex; flex-direction: column; gap: 8px; margin-bottom: 16px; }
.cat-pick {
  display: flex; align-items: center; gap: 8px;
  font-size: 0.82rem; color: var(--text-main);
}
.pick-num {
  width: 20px; height: 20px; border-radius: 50%;
  background: var(--primary-grad); color: #fff;
  font-size: 0.7rem; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.cat-pick span:nth-child(2) { flex: 1; font-weight: 500; }
.pick-score { font-weight: 700; color: var(--primary); }
.cat-link { font-size: 0.82rem; font-weight: 600; color: var(--primary); }
.cat-link:hover { text-decoration: underline; }

/* ===== GUIDE ===== */
.guide-section { background: linear-gradient(160deg, #EEF2FF 0%, #F5F3FF 100%); }
.guide-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.guide-card {
  background: var(--bg-white); border-radius: var(--radius-lg);
  padding: 28px 24px; box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
}
.guide-step {
  font-size: 2.5rem; font-weight: 900;
  background: var(--primary-grad); -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; background-clip: text;
  line-height: 1; margin-bottom: 12px;
  font-family: 'Space Grotesk', sans-serif;
}
.guide-card h3 { font-size: 0.95rem; font-weight: 700; color: var(--text-main); margin-bottom: 8px; }
.guide-card p { font-size: 0.82rem; color: var(--text-sub); line-height: 1.7; }

/* ===== ABOUT ===== */
.about-section { background: var(--bg-white); }
.about-inner { display: grid; grid-template-columns: 1fr 280px; gap: 60px; align-items: start; }
.about-text .section-badge { margin-bottom: 12px; }
.about-text h2 { font-size: 1.8rem; font-weight: 800; color: var(--text-main); margin-bottom: 12px; }
.about-text > p { font-size: 0.92rem; color: var(--text-sub); margin-bottom: 24px; }
.about-criteria { display: flex; flex-direction: column; gap: 14px; }
.criteria-item { display: flex; align-items: flex-start; gap: 14px; }
.criteria-icon { font-size: 1.4rem; flex-shrink: 0; margin-top: 2px; }
.criteria-item strong { display: block; font-size: 0.9rem; color: var(--text-main); margin-bottom: 2px; }
.criteria-item span { font-size: 0.82rem; color: var(--text-sub); }
.about-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.astat-card {
  background: linear-gradient(135deg, #EEF2FF, #F5F3FF);
  border-radius: var(--radius); padding: 24px;
  text-align: center; border: 1px solid rgba(91,79,233,0.15);
}
.astat-num { font-size: 1.8rem; font-weight: 900; background: var(--primary-grad); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; font-family: 'Space Grotesk', sans-serif; }
.astat-label { font-size: 0.78rem; color: var(--text-sub); margin-top: 4px; }

/* ===== FOOTER ===== */
.footer { background: #1A1A2E; color: #9CA3AF; padding: 56px 0 32px; }
.footer-top { display: grid; grid-template-columns: 280px 1fr; gap: 60px; margin-bottom: 40px; }
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand .logo-text { color: #fff; }
.footer-desc { font-size: 0.83rem; line-height: 1.7; color: #6B7280; }
.footer-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.footer-col { display: flex; flex-direction: column; gap: 10px; }
.footer-col-title { font-size: 0.82rem; font-weight: 700; color: #fff; text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 4px; }
.footer-col a { font-size: 0.83rem; color: #6B7280; transition: color 0.2s; }
.footer-col a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding-top: 24px; }
.footer-disclaimer { font-size: 0.78rem; color: #4B5563; line-height: 1.6; margin-bottom: 12px; }
.footer-disclaimer strong { color: #6B7280; }
.footer-copy { font-size: 0.78rem; color: #4B5563; }

/* ===== REVEAL ANIMATION ===== */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ===== RESPONSIVE ===== */
@media (max-width: 1100px) {
  .rank-card { grid-template-columns: 50px 120px 1fr 140px; gap: 16px; }
  .cat-grid, .guide-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 900px) {
  .rank-card { grid-template-columns: 40px 110px 1fr; gap: 14px; }
  .rank-cta { grid-column: 1 / -1; flex-direction: row; flex-wrap: wrap; justify-content: flex-start; }
  .btn-rank-primary, .btn-rank-secondary { width: auto; }
  .about-inner { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; gap: 32px; }
}
@media (max-width: 768px) {
  .nav { display: none; }
  .nav.open { display: flex; flex-direction: column; position: absolute; top: 64px; left: 0; right: 0; background: #fff; padding: 16px; border-bottom: 1px solid var(--border); box-shadow: var(--shadow-md); }
  .hamburger { display: flex; }
  .rank-card { grid-template-columns: 1fr; padding: 20px; }
  .rank-num { flex-direction: row; gap: 8px; }
  .rank-logo { flex-direction: row; align-items: center; }
  .rank-scores { grid-template-columns: 1fr; }
  .rank-pros-cons { grid-template-columns: 1fr; }
  .cat-grid, .guide-grid { grid-template-columns: 1fr; }
  .footer-links { grid-template-columns: repeat(2, 1fr); }
  .hero-meta { flex-direction: column; gap: 12px; padding: 16px; }
  .meta-div { width: 100%; height: 1px; }
}
@media (max-width: 480px) {
  .hero h1 { font-size: 1.6rem; }
  .rank-card { padding: 16px; }
  .footer-links { grid-template-columns: 1fr; }
}