/* ============================================================
   IRQM 解决方案专题 · 深色学院风（与 fz.irqm.com 同背景同字体）
   背景体系与 fz.css 一致：#0B0B0F 底 + #16181D 卡片 + #2A2D34 细线，
   粉红 #FE2C55 强调、青蓝 #25F4EE 链接；正文 fz 同款无衬线 + JetBrains Mono。
   依赖：/Public/style/aliyun/css/common.css（.container / .breadcrumb）
        /h5/fz/assets/fz-header.css（页眉深色皮肤，作用域 .fz-page）
   结构约定见 ../solution-layout.php
   ============================================================ */

:root {
  /* fz-header.css 依赖的 fz 变量（common.css 未定义） */
  --rule: #2A2D34;
  --accent: #FE2C55;
  --accent-soft: rgba(254, 44, 85, 0.14);
  --accent2: #25F4EE;
  --accent2-soft: rgba(37, 244, 238, 0.12);
  --mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body.sol-page {
  background: #0B0B0F;
  color: #C6CBD4;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  font-size: 16px;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
}

/* ---------------- Hero（面包屑 / 眉题 / 标题 / 摘要 / 关键词 / 元信息） ---------------- */
.sol-hero {
  border-bottom: 1px solid var(--rule);
  background: linear-gradient(180deg, #101116 0%, #0B0B0F 100%);
  position: relative;
}
.sol-hero::after {
  content: "";
  display: block;
  border-bottom: 3px double var(--rule);
  position: absolute;
  left: 0; right: 0; bottom: -4px;
}
.sol-hero-inner { padding: 34px 0 40px; }
.sol-crumb { font-size: 13px; color: #8A93A0; }
.sol-crumb a { color: #8A93A0; text-decoration: none; }
.sol-crumb a:hover { color: var(--accent2); }
.sol-crumb .sep { margin: 0 8px; color: #4A5058; }
.sol-crumb .cur { color: #F5F5F7; }

.sol-eyebrow {
  display: inline-block;
  margin-top: 26px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 2.5px;
  color: var(--accent2);
  border: 1px solid rgba(37, 244, 238, 0.35);
  border-radius: 999px;
  padding: 4px 12px;
  background: var(--accent2-soft);
}
.sol-hero h1 {
  margin: 18px 0 0;
  font-weight: 700;
  font-size: 40px;
  line-height: 1.28;
  color: #F5F5F7;
  letter-spacing: 0.5px;
}
.sol-hero h1 .accent { color: var(--accent); }
.sol-hero .sol-h1-en {
  margin-top: 6px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 1.8px;
  color: #6B7480;
  text-transform: uppercase;
}

/* 摘要框 */
.sol-abstract {
  margin-top: 26px;
  max-width: 860px;
  border: 1px solid var(--rule);
  border-left: 3px solid var(--accent);
  border-radius: 6px;
  background: #16181D;
  padding: 18px 22px;
}
.sol-abstract .sol-abs-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 2.5px;
  color: #8A93A0;
  display: block;
  margin-bottom: 8px;
}
.sol-abstract p { margin: 0; font-size: 15.5px; line-height: 1.95; color: #C6CBD4; text-align: justify; }

.sol-kw {
  margin-top: 14px;
  font-size: 13.5px;
  color: #8A93A0;
  max-width: 860px;
}
.sol-kw b { color: #F5F5F7; margin-right: 6px; }
.sol-kw i { font-style: normal; }
.sol-kw a { color: var(--accent2); text-decoration: none; }
.sol-kw a:hover { color: var(--accent); }
.sol-kw .sol-kw-sep { color: #4A5058; }

.sol-meta {
  margin-top: 26px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.sol-meta span {
  padding: 12px 16px 12px 0;
  font-size: 13px;
  color: #8A93A0;
  display: flex;
  flex-direction: column;
  gap: 2px;
  border-left: 1px dashed var(--rule);
  padding-left: 16px;
}
.sol-meta span:first-child { border-left: 0; padding-left: 0; }
.sol-meta b { color: #F5F5F7; font-size: 13.5px; font-weight: 600; }

/* ---------------- 双栏骨架：左侧目录 + 右侧正文 ---------------- */
.sol-body { padding: 8px 0 64px; }
.sol-layout {
  display: grid;
  grid-template-columns: 224px minmax(0, 1fr);
  gap: 48px;
  align-items: start;
}

/* 左侧粘性目录 */
.sol-toc { position: sticky; top: 92px; }
.sol-toc-card {
  border: 1px solid var(--rule);
  border-radius: 14px;
  background: #16181D;
  overflow: hidden;
}
.sol-toc-head {
  padding: 12px 16px;
  font-size: 13px;
  font-weight: 700;
  color: #F5F5F7;
  border-bottom: 1px solid var(--rule);
}
.sol-toc-head i { color: var(--accent); margin-right: 6px; }
.sol-toc-nav { padding: 8px 0; max-height: 62vh; overflow-y: auto; }
.sol-toc-nav a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 8px 16px;
  font-size: 13.5px;
  color: #9AA0A6;
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color 0.2s;
}
.sol-toc-nav a .n { font-family: var(--mono); font-size: 11px; color: #6B7480; }
.sol-toc-nav a:hover { color: var(--accent2); background: rgba(37, 244, 238, 0.06); }
.sol-toc-nav a.on {
  color: var(--accent2);
  border-left-color: var(--accent);
  background: rgba(37, 244, 238, 0.08);
  font-weight: 600;
}
.sol-toc-nav a.on .n { color: var(--accent); }
.sol-toc-tips {
  padding: 12px 16px;
  border-top: 1px solid var(--rule);
  font-size: 12px;
  color: #8A93A0;
  line-height: 1.7;
}
.sol-toc-tips a { color: var(--accent2); text-decoration: none; }

/* ---------------- 正文小节 ---------------- */
.sol-sec { padding: 54px 0 10px; scroll-margin-top: 96px; }
.sol-sec + .sol-sec { border-top: 1px solid var(--rule); margin-top: 44px; }
.sol-sec-head { display: flex; align-items: baseline; gap: 14px; }
.sol-num {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--accent2);
  border: 1px solid rgba(37, 244, 238, 0.3);
  background: var(--accent2-soft);
  border-radius: 6px;
  padding: 2px 8px;
  flex: none;
}
.sol-sec-head h2 {
  margin: 0;
  font-size: 26px;
  font-weight: 700;
  color: #F5F5F7;
  letter-spacing: 0.5px;
}
.sol-sec-head h2 em {
  font-style: normal;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 2px;
  color: #6B7480;
  margin-left: 12px;
  text-transform: uppercase;
  white-space: nowrap;
}
.sol-sec-more {
  margin-left: auto;
  font-size: 13px;
  color: var(--accent2);
  text-decoration: none;
  white-space: nowrap;
}
.sol-sec-more:hover { color: var(--accent); }

.sol-prose { margin-top: 22px; }
.sol-prose p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.95;
  color: #C6CBD4;
  text-align: justify;
}
.sol-prose > p:last-child { margin-bottom: 0; }
.sol-prose b { color: #F5F5F7; }
.sol-prose h3 {
  margin: 30px 0 12px;
  font-size: 18px;
  font-weight: 700;
  color: #F5F5F7;
  display: flex;
  align-items: baseline;
  gap: 8px;
}
.sol-prose h3::before {
  content: "§";
  font-family: var(--mono);
  font-size: 15px;
  color: var(--accent2);
}
.sol-prose a { color: var(--accent2); text-decoration: none; border-bottom: 1px solid rgba(37, 244, 238, 0.35); }
.sol-prose a:hover { color: var(--accent); border-bottom-color: var(--accent); }
.sol-prose ul, .sol-prose ol { margin: 0 0 14px; padding-left: 22px; color: #C6CBD4; font-size: 15px; line-height: 1.9; }
.sol-prose li { margin-bottom: 6px; }

/* 引用角标 [n] */
.sol-ref { font-family: var(--mono); font-size: 11px; white-space: nowrap; }
.sol-ref a { color: var(--accent2); text-decoration: none; border: 0; vertical-align: super; }
.sol-ref a:hover { color: var(--accent); text-decoration: underline; }

/* 强调词起段 */
.sol-kwd { color: #F5F5F7; font-weight: 700; }

/* ---------------- 三线表（booktabs，深色） ---------------- */
.sol-table-wrap {
  margin: 18px 0 8px;
  border: 1px solid var(--rule);
  border-radius: 10px;
  overflow-x: auto;
  background: #16181D;
}
.sol-table { width: 100%; border-collapse: collapse; font-size: 14px; min-width: 520px; }
.sol-table thead th {
  border-top: 2px solid #3A3F49;
  border-bottom: 1px solid #3A3F49;
  background: #1E2128;
  padding: 11px 14px;
  text-align: left;
  font-weight: 600;
  color: #F5F5F7;
  white-space: nowrap;
}
.sol-table tbody td {
  padding: 11px 14px;
  border-bottom: 1px solid rgba(42, 45, 52, 0.6);
  color: #C6CBD4;
  line-height: 1.75;
  vertical-align: top;
}
.sol-table tbody tr:last-child td { border-bottom: 2px solid #3A3F49; }
.sol-table tbody tr:hover td { background: rgba(255, 255, 255, 0.025); }
.sol-table th.hl, .sol-table td.hl { background: var(--accent-soft); }
.sol-table td.hl b { color: #FFE3EA; }
.sol-table .mono { font-family: var(--mono); font-size: 13px; }

.sol-fig-cap {
  font-family: var(--mono);
  font-size: 12px;
  color: #6B7480;
  text-align: center;
  margin: 10px 0 20px;
}

/* ---------------- 定义 / 要点 / 边界 提示框 ---------------- */
.sol-note {
  margin: 18px 0;
  border: 1px solid var(--rule);
  border-left: 3px solid var(--accent2);
  border-radius: 6px;
  background: #16181D;
  padding: 13px 18px;
  font-size: 14px;
  line-height: 1.85;
  color: #C6CBD4;
}
.sol-note .sol-note-label {
  display: block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--accent2);
  margin-bottom: 4px;
}
.sol-note p { margin: 0 0 6px; }
.sol-note p:last-child { margin-bottom: 0; }
.sol-note.warn { border-left-color: #FFCC00; }
.sol-note.warn .sol-note-label { color: #FFCC00; }
.sol-note.ok { border-left-color: var(--accent2); }
.sol-note.ok .sol-note-label { color: var(--accent2); }

/* ---------------- CSS 架构示意图 ---------------- */
.sol-flow {
  display: flex;
  align-items: stretch;
  flex-wrap: wrap;
  gap: 10px;
  margin: 18px 0 6px;
}
.sol-node {
  flex: 1 1 140px;
  border: 1px solid var(--rule);
  border-radius: 8px;
  background: #1E2128;
  padding: 12px 14px;
  min-width: 130px;
}
.sol-node b {
  display: block;
  font-size: 13.5px;
  color: #F5F5F7;
  margin-bottom: 4px;
}
.sol-node span { font-size: 12.5px; color: #8A93A0; line-height: 1.6; display: block; }
.sol-node + .sol-arrow,
.sol-arrow {
  align-self: center;
  font-family: var(--mono);
  color: var(--accent);
  font-size: 15px;
  flex: 0 0 auto;
  padding: 0 2px;
}
@media (max-width: 760px) {
  .sol-flow { flex-direction: column; }
  .sol-arrow { transform: rotate(90deg); align-self: center; padding: 0; }
}

/* ---------------- FAQ ---------------- */
.sol-faq { margin-top: 10px; }
.sol-faq details { border-bottom: 1px solid var(--rule); }
.sol-faq details:first-child { border-top: 1px solid var(--rule); }
.sol-faq summary {
  list-style: none;
  cursor: pointer;
  padding: 16px 34px 16px 0;
  position: relative;
  font-size: 15px;
  font-weight: 600;
  color: #F5F5F7;
  line-height: 1.6;
}
.sol-faq summary::-webkit-details-marker { display: none; }
.sol-faq summary::after {
  content: "+";
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--mono);
  font-size: 18px;
  color: #6B7480;
  transition: transform 0.2s ease;
}
.sol-faq details[open] summary::after { content: "−"; }
.sol-faq summary:hover { color: var(--accent2); }
.sol-faq .sol-faq-a {
  padding: 0 0 18px;
  font-size: 14.5px;
  line-height: 1.9;
  color: #C6CBD4;
  text-align: justify;
}
.sol-faq .sol-faq-a a { color: var(--accent2); text-decoration: none; border-bottom: 1px solid rgba(37, 244, 238, 0.35); }

/* ---------------- 参考与来源 ---------------- */
.sol-refs { border-top: 1px solid var(--rule); padding: 44px 0 8px; }
.sol-refs h2 {
  margin: 0;
  font-size: 22px;
  color: #F5F5F7;
}
.sol-refs h2 em {
  font-style: normal;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 2px;
  color: #6B7480;
  margin-left: 12px;
  text-transform: uppercase;
}
.sol-refs ol {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: solref;
}
.sol-refs ol li {
  counter-increment: solref;
  position: relative;
  padding: 6px 0 6px 40px;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.8;
  color: #8A93A0;
}
.sol-refs ol li::before {
  content: "[" counter(solref) "]";
  position: absolute;
  left: 0;
  color: var(--accent);
}

/* ---------------- 相关方案 + 咨询 ---------------- */
.sol-ext { border-top: 1px solid var(--rule); padding: 44px 0 20px; }
.sol-ext h2 {
  margin: 0;
  font-size: 22px;
  color: #F5F5F7;
}
.sol-ext h2 em {
  font-style: normal;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 2px;
  color: #6B7480;
  margin-left: 12px;
  text-transform: uppercase;
}
.sol-related {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}
.sol-related a {
  display: block;
  border: 1px solid var(--rule);
  border-radius: 10px;
  padding: 16px 18px;
  text-decoration: none;
  background: #16181D;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.sol-related a:hover { border-color: rgba(254, 44, 85, 0.5); box-shadow: 0 6px 20px rgba(254, 44, 85, 0.12); }
.sol-related b {
  display: block;
  font-size: 15px;
  color: #F5F5F7;
  margin-bottom: 6px;
}
.sol-related b i {
  font-style: normal;
  color: var(--accent);
  margin-left: 6px;
  font-size: 12px;
}
.sol-related span { font-size: 13px; color: #8A93A0; line-height: 1.7; display: block; }

.sol-cta {
  margin-top: 26px;
  border: 1px solid var(--rule);
  border-radius: 12px;
  background: linear-gradient(135deg, #16181D 0%, #101116 60%);
  padding: 22px 26px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
}
.sol-cta .sol-cta-txt { flex: 1 1 320px; }
.sol-cta b { display: block; font-size: 17px; color: #F5F5F7; margin-bottom: 4px; }
.sol-cta span { font-size: 13.5px; color: #8A93A0; line-height: 1.7; }
.sol-cta-btns { display: flex; gap: 10px; flex-wrap: wrap; }
.sol-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  padding: 10px 18px;
  border-radius: 8px;
  text-decoration: none;
  transition: background 0.15s ease;
}
.sol-btn:hover { background: #e62149; color: #fff; }
.sol-btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--accent2);
  border: 1px solid rgba(37, 244, 238, 0.4);
  font-size: 14px;
  padding: 10px 18px;
  border-radius: 8px;
  text-decoration: none;
}
.sol-btn-ghost:hover { border-color: var(--accent2); color: var(--accent); }

/* ---------------- 总览页分组卡片 ---------------- */
.sol-group { margin-top: 26px; }
.sol-group-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 14px;
}
.sol-group-head h3 { margin: 0; font-size: 19px; color: #F5F5F7; }
.sol-group-head span { font-family: var(--mono); font-size: 11px; letter-spacing: 2px; color: #6B7480; text-transform: uppercase; }
.sol-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}
.sol-card {
  border: 1px solid var(--rule);
  border-radius: 10px;
  padding: 18px 20px;
  text-decoration: none;
  display: block;
  background: #16181D;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.sol-card:hover { border-color: rgba(254, 44, 85, 0.5); box-shadow: 0 6px 20px rgba(254, 44, 85, 0.12); }
.sol-card b { display: block; font-size: 16px; color: #F5F5F7; margin-bottom: 6px; }
.sol-card b i { font-style: normal; color: var(--accent2); margin-left: 8px; font-size: 12.5px; font-family: var(--mono); }
.sol-card span { font-size: 13.5px; color: #8A93A0; line-height: 1.75; display: block; }

/* ---------------- 返回顶部 ---------------- */
.sol-backtop {
  position: fixed;
  right: 26px;
  bottom: 30px;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  border: 1px solid var(--rule);
  background: #16181D;
  color: #F5F5F7;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.45);
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
  z-index: 60;
}
.sol-backtop.show { opacity: 1; pointer-events: auto; }
.sol-backtop:hover { color: var(--accent2); border-color: rgba(37, 244, 238, 0.4); }

/* ---------------- 响应式 ---------------- */
@media (max-width: 1080px) {
  .sol-layout { grid-template-columns: 1fr; gap: 20px; }
  .sol-toc { position: static; }
  .sol-toc-nav { max-height: none; display: flex; flex-wrap: wrap; padding: 6px 10px; }
  .sol-toc-nav a { border-left: 0; border-radius: 6px; padding: 6px 10px; }
  .sol-toc-tips { display: none; }
  .sol-related { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 760px) {
  .sol-hero h1 { font-size: 30px; }
  .sol-meta { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .sol-meta span:nth-child(3) { border-left: 0; padding-left: 0; }
  .sol-sec { padding: 40px 0 6px; }
  .sol-sec-head { flex-wrap: wrap; gap: 8px; }
  .sol-sec-head h2 { font-size: 22px; }
  .sol-sec-head h2 em { display: block; width: 100%; margin-left: 0; }
  .sol-related { grid-template-columns: 1fr; }
  .sol-grid { grid-template-columns: 1fr; }
  .sol-cta { padding: 18px; }
}

@media (prefers-reduced-motion: reduce) {
  .sol-related a, .sol-card, .sol-btn, .sol-btn-ghost, .sol-toc-nav a { transition: none; }
}