/* ===== 基础重置 ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --color-bg: #0e0f14;
  --color-bg2: #15161e;
  --color-bg3: #1c1d27;
  --color-border: #2a2b38;
  --color-text: #e8e9f0;
  --color-sub: #8b8fa8;
  --color-gold: #d4a853;
  --color-gold2: #f5c842;

  /* 能量颜色 */
  --color-daji:      #22c55e;
  --color-ji:        #3b82f6;
  --color-banji:     #eab308;
  --color-xiong:     #b36b00;
  --color-jidaixiong:#8b4513;

  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
}

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
               "Microsoft YaHei", sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  font-size: 16px;
}

a { color: var(--color-gold); text-decoration: none; }
a:hover { color: var(--color-gold2); }

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ===== 导航 ===== */
.site-header {
  background: var(--color-bg2);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 18px;
  font-weight: 700;
  color: var(--color-gold);
}
.logo-icon { font-size: 22px; }
.site-nav { display: flex; gap: 24px; align-items: center; }
.site-nav a {
  color: var(--color-sub);
  font-size: 14px;
  transition: color 0.2s;
  white-space: nowrap;
}
.site-nav a:hover { color: var(--color-text); }
.nav-vip {
  background: linear-gradient(135deg, #c9962a, #d4a853) !important;
  color: #000 !important;
  padding: 4px 12px;
  border-radius: 12px;
  font-weight: 600;
}
.nav-vip:hover { opacity: 0.9; color: #000 !important; }
.nav-lang {
  background: var(--color-bg3) !important;
  border: 1px solid var(--color-border) !important;
  color: var(--color-sub) !important;
  padding: 4px 10px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 12px !important;
}
.nav-lang:hover { color: var(--color-gold) !important; border-color: var(--color-gold) !important; }

/* 移动端适配 */
@media (max-width: 600px) {
  .site-header .container {
    height: 54px;
    padding: 0 12px;
    flex-wrap: wrap;
  }
  .logo {
    font-size: 16px;
    flex-shrink: 0;
  }
  .logo-icon { font-size: 20px; }
  .site-nav {
    gap: 12px;
    order: 3;
    width: 100%;
    justify-content: center;
    padding: 8px 0 4px;
    border-top: 1px solid var(--color-border);
    margin-top: 4px;
  }
  .site-nav a {
    font-size: 12px;
    padding: 4px 0;
  }
  .nav-vip {
    padding: 4px 10px;
    font-size: 12px;
  }
}

/* ===== Hero ===== */
.hero {
  background: linear-gradient(135deg, #1a1b26 0%, #0e0f14 100%);
  text-align: center;
  padding: 64px 20px 48px;
  border-bottom: 1px solid var(--color-border);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: "☯";
  position: absolute;
  font-size: 300px;
  opacity: 0.03;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}
.hero h1 {
  font-size: 2.4rem;
  font-weight: 800;
  background: linear-gradient(90deg, var(--color-gold), var(--color-gold2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
}
.hero-sub {
  color: var(--color-sub);
  font-size: 1rem;
  line-height: 1.8;
}

/* ===== 测算工具 ===== */
.calculator-section { padding: 48px 20px; }
.calculator-card {
  background: var(--color-bg2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 40px;
  max-width: 640px;
  margin: 0 auto;
  box-shadow: var(--shadow);
}
.calculator-card h2 {
  font-size: 1.4rem;
  margin-bottom: 8px;
  color: var(--color-text);
}
.calc-desc {
  color: var(--color-sub);
  font-size: 0.9rem;
  margin-bottom: 28px;
}
.input-group {
  display: flex;
  gap: 12px;
  margin-bottom: 8px;
}
.number-input {
  flex: 1;
  background: var(--color-bg3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-size: 1rem;
  padding: 12px 16px;
  outline: none;
  transition: border-color 0.2s;
}
.number-input:focus { border-color: var(--color-gold); }
.number-input::placeholder { color: var(--color-sub); }
.analyze-btn {
  background: linear-gradient(135deg, #c9962a, #d4a853);
  color: #000;
  border: none;
  border-radius: var(--radius-sm);
  padding: 12px 28px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.1s;
  white-space: nowrap;
}
.analyze-btn:hover { opacity: 0.9; transform: translateY(-1px); }
.analyze-btn:active { transform: translateY(0); }
.input-hint {
  color: var(--color-sub);
  font-size: 0.8rem;
  margin-bottom: 16px;
}

/* ===== 次数限制UI ===== */
.limit-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--color-bg3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 8px 14px;
  margin-bottom: 12px;
  font-size: 0.85rem;
}
.limit-count {
  color: var(--color-sub);
}
.limit-count strong {
  color: var(--color-gold);
}
.limit-status {
  color: var(--color-sub);
  font-size: 0.8rem;
}
.cooldown-text {
  color: #eab308;
}
.cooldown-text strong {
  color: #f97316;
}
.ad-skip-btn {
  background: linear-gradient(135deg, #c9962a, #d4a853);
  color: #000;
  border: none;
  border-radius: 4px;
  padding: 4px 10px;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  margin-left: 8px;
}
.ad-skip-btn:hover { opacity: 0.9; }

/* 升级提示 */
.upgrade-notice {
  background: linear-gradient(135deg, rgba(201,150,42,0.1), rgba(212,168,83,0.05));
  border: 1px solid rgba(212,168,83,0.3);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  text-align: center;
  margin-bottom: 16px;
}
.upgrade-notice p {
  color: var(--color-gold);
  font-size: 0.9rem;
  margin-bottom: 8px;
}
.upgrade-btn {
  display: inline-block;
  background: linear-gradient(135deg, #c9962a, #d4a853);
  color: #000;
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.85rem;
  transition: opacity 0.2s;
}
.upgrade-btn:hover { opacity: 0.9; color: #000; }

/* ===== 结果 ===== */
.result-box {
  background: var(--color-bg3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  animation: fadeIn 0.4s ease;
}
@keyframes fadeIn { from { opacity:0; transform:translateY(8px); } to { opacity:1; transform:translateY(0); } }

.result-inner { padding: 28px; }

.result-number-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}
.result-label { color: var(--color-sub); font-size: 0.85rem; }
.result-number {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--color-gold);
  line-height: 1;
}
.result-type-row { margin-bottom: 16px; }
.result-badge {
  display: inline-block;
  padding: 4px 16px;
  border-radius: 99px;
  font-size: 0.9rem;
  font-weight: 700;
}
.result-badge.daji      { background: #16401e; color: var(--color-daji); border: 1px solid var(--color-daji); }
.result-badge.ji        { background: #1a2d4f; color: var(--color-ji); border: 1px solid var(--color-ji); }
.result-badge.banji     { background: #3d3000; color: var(--color-banji); border: 1px solid var(--color-banji); }
.result-badge.xiong     { background: #3d2000; color: var(--color-xiong); border: 1px solid var(--color-xiong); }
.result-badge.jidaixiong{ background: #2e1208; color: var(--color-jidaixiong); border: 1px solid var(--color-jidaixiong); }

.result-desc {
  color: var(--color-sub);
  font-size: 0.95rem;
  line-height: 1.8;
  margin-bottom: 20px;
}

/* 能量条 */
.energy-bar-wrap { margin-bottom: 20px; }
.energy-bar-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--color-sub);
  margin-bottom: 6px;
}
.energy-bar-bg {
  background: var(--color-bg);
  border-radius: 99px;
  height: 8px;
  overflow: hidden;
}
.energy-bar {
  height: 100%;
  border-radius: 99px;
  transition: width 0.8s cubic-bezier(0.4,0,0.2,1);
}
.energy-scale {
  display: flex;
  justify-content: space-between;
  font-size: 0.7rem;
  color: #555;
  margin-top: 4px;
}

.share-btn {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-sub);
  border-radius: var(--radius-sm);
  padding: 8px 20px;
  font-size: 0.85rem;
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s;
}
.share-btn:hover { border-color: var(--color-gold); color: var(--color-gold); }

/* ===== 能量介绍 ===== */
.energy-intro {
  padding: 60px 20px;
  background: var(--color-bg2);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}
.energy-intro h2,
.articles-section h2,
.faq-section h2 {
  text-align: center;
  font-size: 1.6rem;
  margin-bottom: 8px;
}
.section-sub {
  text-align: center;
  color: var(--color-sub);
  font-size: 0.9rem;
  margin-bottom: 36px;
}
.energy-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}
@media (max-width: 720px) {
  .energy-grid { grid-template-columns: repeat(2, 1fr); }
  .energy-grid .energy-card:last-child { grid-column: 1 / -1; }
}
.energy-card {
  background: var(--color-bg3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px 16px;
  text-align: center;
  transition: transform 0.2s, border-color 0.2s;
}
.energy-card:hover { transform: translateY(-3px); }
.energy-icon { font-size: 1.8rem; margin-bottom: 8px; }
.energy-card h3 { font-size: 1rem; margin-bottom: 6px; }
.energy-card p { font-size: 0.78rem; color: var(--color-sub); line-height: 1.6; }

.energy-card.daji       { border-color: #16401e; }
.energy-card.daji h3    { color: var(--color-daji); }
.energy-card.ji         { border-color: #1a2d4f; }
.energy-card.ji h3      { color: var(--color-ji); }
.energy-card.banji      { border-color: #3d3000; }
.energy-card.banji h3   { color: var(--color-banji); }
.energy-card.xiong      { border-color: #3d2000; }
.energy-card.xiong h3   { color: var(--color-xiong); }
.energy-card.jidaixiong { border-color: #2e1208; }
.energy-card.jidaixiong h3 { color: var(--color-jidaixiong); }

/* ===== 广告位 ===== */
.ad-section { padding: 24px 20px; }
.ad-placeholder {
  background: var(--color-bg2);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-sm);
  min-height: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-border);
  font-size: 0.8rem;
}

/* ===== 文章 ===== */
.articles-section { padding: 60px 20px; }
.articles-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
@media (max-width: 600px) { .articles-grid { grid-template-columns: 1fr; } }
.article-card {
  background: var(--color-bg2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: border-color 0.2s, transform 0.2s;
  color: var(--color-text);
}
.article-card:hover { border-color: var(--color-gold); transform: translateY(-2px); }
.article-tag {
  display: inline-block;
  background: #2a2b38;
  color: var(--color-gold);
  border-radius: 4px;
  font-size: 0.72rem;
  padding: 2px 8px;
  width: fit-content;
}
.article-card h3 { font-size: 0.95rem; line-height: 1.5; }
.article-card p { font-size: 0.82rem; color: var(--color-sub); flex: 1; }
.article-read { font-size: 0.8rem; color: var(--color-gold); }

/* ===== FAQ ===== */
.faq-section {
  padding: 60px 20px;
  background: var(--color-bg2);
  border-top: 1px solid var(--color-border);
}
.faq-list { max-width: 720px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: var(--color-bg3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.faq-item summary {
  padding: 16px 20px;
  font-size: 0.95rem;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-size: 1.2rem;
  color: var(--color-gold);
  transition: transform 0.2s;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p {
  padding: 0 20px 16px;
  color: var(--color-sub);
  font-size: 0.88rem;
  line-height: 1.8;
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  padding: 40px 20px;
}
.footer-inner { text-align: center; }
.footer-brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-gold);
  margin-bottom: 12px;
}
.footer-desc { color: var(--color-sub); font-size: 0.85rem; margin-bottom: 6px; }
.footer-disclaimer { color: #444; font-size: 0.75rem; }

/* ===== 弹窗 ===== */
.modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
}
.modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.7);
}
.modal-content {
  position: relative;
  z-index: 1;
  background: var(--color-bg2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: center;
}
#shareCanvas {
  border-radius: 8px;
  max-width: 100%;
}
.modal-actions { display: flex; gap: 12px; }
.btn-download {
  background: var(--color-gold);
  color: #000;
  border: none;
  border-radius: var(--radius-sm);
  padding: 10px 24px;
  font-weight: 700;
  cursor: pointer;
}
.btn-close {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-sub);
  border-radius: var(--radius-sm);
  padding: 10px 24px;
  cursor: pointer;
}

/* ===== 文章页 ===== */
.article-page { padding: 48px 20px; max-width: 720px; margin: 0 auto; }
.article-page h1 { font-size: 1.8rem; margin-bottom: 16px; line-height: 1.4; }
.article-meta { color: var(--color-sub); font-size: 0.82rem; margin-bottom: 32px; }
.article-page h2 { font-size: 1.2rem; margin: 32px 0 12px; color: var(--color-gold); }
.article-page p { color: var(--color-sub); line-height: 1.9; margin-bottom: 16px; font-size: 0.95rem; }
.article-page ul, .article-page ol { padding-left: 24px; color: var(--color-sub); font-size: 0.95rem; line-height: 2; margin-bottom: 16px; }
.article-cta {
  background: var(--color-bg2);
  border: 1px solid var(--color-gold);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  margin: 40px 0;
}
.article-cta p { color: var(--color-text); margin-bottom: 12px; }
.article-cta a {
  display: inline-block;
  background: var(--color-gold);
  color: #000;
  font-weight: 700;
  padding: 10px 28px;
  border-radius: var(--radius-sm);
}

/* ===== Hero 升级 ===== */
.hero-badge {
  display: inline-block;
  background: rgba(212,168,83,0.12);
  border: 1px solid rgba(212,168,83,0.3);
  color: var(--color-gold);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  padding: 4px 16px;
  border-radius: 99px;
  margin-bottom: 20px;
}
.hero-tags {
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 20px;
}
.hero-tags span {
  background: var(--color-bg2);
  border: 1px solid var(--color-border);
  color: var(--color-sub);
  font-size: 0.78rem;
  padding: 4px 12px;
  border-radius: 4px;
  letter-spacing: 0.05em;
}

/* ===== 文化溯源区块 ===== */
.culture-section {
  padding: 80px 20px;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.culture-header {
  text-align: center;
  margin-bottom: 56px;
}
.culture-tag {
  display: inline-block;
  background: rgba(212,168,83,0.1);
  border: 1px solid rgba(212,168,83,0.25);
  color: var(--color-gold);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  padding: 3px 14px;
  border-radius: 99px;
  margin-bottom: 16px;
}
.culture-header h2 {
  font-size: 1.8rem;
  margin-bottom: 16px;
  background: linear-gradient(90deg, var(--color-gold), var(--color-gold2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.culture-intro-text {
  max-width: 640px;
  margin: 0 auto;
  color: var(--color-sub);
  font-size: 0.95rem;
  line-height: 1.9;
}

/* 时间轴 */
.timeline {
  position: relative;
  max-width: 720px;
  margin: 0 auto 60px;
  padding-left: 0;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 80px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, transparent, var(--color-border) 10%, var(--color-border) 90%, transparent);
}
.timeline-item {
  display: grid;
  grid-template-columns: 80px 20px 1fr;
  gap: 0 16px;
  margin-bottom: 36px;
  align-items: start;
}
.timeline-era {
  text-align: right;
  color: var(--color-gold);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding-top: 2px;
}
.timeline-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-gold);
  margin-top: 5px;
  flex-shrink: 0;
  box-shadow: 0 0 8px rgba(212,168,83,0.5);
  position: relative;
  left: 5px;
}
.timeline-content h4 {
  font-size: 0.95rem;
  color: var(--color-text);
  margin-bottom: 6px;
}
.timeline-content p {
  font-size: 0.85rem;
  color: var(--color-sub);
  line-height: 1.8;
}

/* 两图并列 */
.two-diagrams {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 48px;
}
@media (max-width: 680px) {
  .two-diagrams { grid-template-columns: 1fr; }
}

.diagram-card {
  background: var(--color-bg2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px 24px;
}
.diagram-title {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
}
.diagram-badge {
  display: inline-block;
  padding: 3px 12px;
  border-radius: 4px;
  font-size: 0.85rem;
  font-weight: 700;
}
.diagram-badge.hetu {
  background: rgba(59,130,246,0.15);
  color: #60a5fa;
  border: 1px solid rgba(59,130,246,0.3);
}
.diagram-badge.luoshu {
  background: rgba(212,168,83,0.12);
  color: var(--color-gold);
  border: 1px solid rgba(212,168,83,0.3);
}
.diagram-subtitle {
  color: var(--color-sub);
  font-size: 0.8rem;
}
.diagram-desc {
  font-size: 0.82rem;
  color: var(--color-sub);
  line-height: 1.8;
  margin-top: 16px;
}

/* 河图布局 */
.hetu-diagram {
  position: relative;
  width: 180px;
  height: 180px;
  margin: 0 auto;
}
.hetu-dot {
  position: absolute;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 1px solid;
  transform: translate(-50%, -50%);
}
.dot-numbers { font-size: 0.78rem; font-weight: 700; line-height: 1.2; }
.dot-label   { font-size: 0.6rem; opacity: 0.7; }

.hetu-dot.water  { left:50%; top:10%;  background:rgba(59,130,246,0.1); border-color:rgba(59,130,246,0.4); color:#60a5fa; }
.hetu-dot.fire   { left:50%; top:90%;  background:rgba(239,68,68,0.1);  border-color:rgba(239,68,68,0.4);  color:#f87171; }
.hetu-dot.wood   { left:90%; top:50%;  background:rgba(34,197,94,0.1);  border-color:rgba(34,197,94,0.4);  color:#4ade80; }
.hetu-dot.metal  { left:10%; top:50%;  background:rgba(212,168,83,0.1); border-color:rgba(212,168,83,0.4); color:var(--color-gold); }
.hetu-dot.earth  { left:50%; top:50%;  background:rgba(161,120,50,0.15);border-color:rgba(161,120,50,0.5); color:#c8972a; }

/* 洛书九宫格 */
.luoshu-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
  width: 180px;
  margin: 0 auto;
}
.luo-cell {
  background: var(--color-bg3);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 56px;
  transition: background 0.2s;
}
.luo-cell:hover { background: rgba(212,168,83,0.08); }
.luo-cell span {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--color-gold);
  line-height: 1;
}
.luo-cell small {
  font-size: 0.52rem;
  color: var(--color-sub);
  margin-top: 2px;
}
.luo-cell.c span { color: var(--color-gold2); }

/* 三大哲学概念 */
.philosophy-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 40px;
}
@media (max-width: 600px) {
  .philosophy-row { grid-template-columns: 1fr; }
}
.phil-card {
  background: var(--color-bg2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: center;
}
.phil-icon {
  font-size: 1.8rem;
  color: var(--color-gold);
  margin-bottom: 10px;
}
.phil-card h4 {
  font-size: 1rem;
  margin-bottom: 8px;
  color: var(--color-text);
}
.phil-card p {
  font-size: 0.82rem;
  color: var(--color-sub);
  line-height: 1.8;
}

/* AI共鸣区 */
.ai-resonance {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  background: linear-gradient(135deg, rgba(212,168,83,0.06), rgba(34,197,94,0.04));
  border: 1px solid rgba(212,168,83,0.2);
  border-radius: var(--radius);
  padding: 28px 32px;
  margin-bottom: 24px;
}
.ar-icon {
  font-size: 2rem;
  color: var(--color-gold);
  flex-shrink: 0;
  margin-top: 2px;
}
.ar-text h4 {
  font-size: 1rem;
  color: var(--color-text);
  margin-bottom: 10px;
}
.ar-text p {
  font-size: 0.88rem;
  color: var(--color-sub);
  line-height: 1.9;
}

/* 算法注记 */
.algo-note {
  border-left: 3px solid var(--color-gold);
  padding: 16px 20px;
  background: rgba(212,168,83,0.05);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.algo-note p {
  font-size: 0.88rem;
  color: var(--color-sub);
  line-height: 1.9;
}
.algo-note strong {
  color: var(--color-gold);
}

/* ===== 响应式 ===== */
@media (max-width: 480px) {
  .hero h1 { font-size: 1.6rem; }
  .calculator-card { padding: 24px 16px; }
  .input-group { flex-direction: column; }
  .analyze-btn { width: 100%; }
  .energy-grid { grid-template-columns: 1fr 1fr; }
  .timeline::before { left: 60px; }
  .timeline-item { grid-template-columns: 60px 20px 1fr; }
  .ai-resonance { flex-direction: column; gap: 12px; padding: 20px; }
}