/* ============================================================
   MyFreeya 全站样式
   配色：深松绿 / 晨雾白 / 琥珀金 —— 平衡、节律、可信赖
   字体：衬线做标题（有分量），无衬线做正文（好阅读）
   为 50-70 岁读者优化：大字号、高对比、大按钮
   ============================================================ */

:root {
  --pine: #17433B;        /* 深松绿：页头页脚、主标题 */
  --pine-deep: #0F312B;
  --mist: #F4F7F3;        /* 晨雾：页面底色 */
  --amber: #C08A2D;       /* 琥珀金：CTA、强调 */
  --amber-deep: #A87421;
  --ink: #24302B;         /* 正文墨色 */
  --moss-line: #D8E2D9;   /* 分隔线、卡片边 */
  --white: #FFFFFF;
  --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
  --sans: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

body {
  font-family: var(--sans);
  font-size: 18px;
  line-height: 1.95;
  color: var(--ink);
  background: var(--mist);
  -webkit-font-smoothing: antialiased;
}
@media (min-width: 768px) { body { font-size: 19px; } }

img { max-width: 100%; display: block; }
a { color: var(--pine); }

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 20px; }
.wrap-narrow { max-width: 760px; margin: 0 auto; padding: 0 20px; }

/* ---------- 页头导航 ---------- */
.site-header {
  background: var(--pine);
  position: sticky; top: 0; z-index: 50;
  box-shadow: 0 1px 0 rgba(0,0,0,.18);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 8px 16px;
  padding: 14px 20px; max-width: 1080px; margin: 0 auto;
}
.brand {
  font-family: var(--serif); font-weight: 700; font-size: 22px;
  color: #fff; text-decoration: none; letter-spacing: .5px;
}
.brand small { display: block; font-family: var(--sans); font-weight: 400; font-size: 12px; color: #BBD3CB; letter-spacing: 2px; }
.nav-links { display: flex; flex-wrap: wrap; gap: 4px 18px; list-style: none; }
.nav-links a {
  color: #E4EFE9; text-decoration: none; font-size: 16px;
  padding: 6px 2px; border-bottom: 2px solid transparent;
}
.nav-links a:hover, .nav-links a.active { color: #fff; border-bottom-color: var(--amber); }

/* ---------- Hero ---------- */
.hero { background: linear-gradient(180deg, var(--pine) 0%, var(--pine-deep) 100%); color: #fff; padding: 64px 0 0; overflow: hidden; }
.hero-inner { max-width: 860px; margin: 0 auto; padding: 0 20px; text-align: center; }
.eyebrow {
  display: inline-block; font-size: 15px; letter-spacing: 3px;
  color: var(--amber); border: 1px solid rgba(192,138,45,.55);
  padding: 4px 16px; border-radius: 999px; margin-bottom: 24px;
}
.hero h1 {
  font-family: var(--serif); font-weight: 700;
  font-size: clamp(28px, 5.4vw, 46px);
  line-height: 1.55; margin-bottom: 20px;
}
.hero h1 em { font-style: normal; color: #E8C87E; }
.hero .sub { font-size: clamp(17px, 2.4vw, 21px); color: #CFE0D8; max-width: 640px; margin: 0 auto 34px; }

.btn {
  display: inline-block; text-decoration: none; text-align: center;
  font-size: 19px; font-weight: 600; letter-spacing: 1px;
  padding: 16px 38px; min-height: 52px; border-radius: 10px;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
}
.btn-amber { background: var(--amber); color: #fff; box-shadow: 0 6px 18px rgba(192,138,45,.35); }
.btn-amber:hover { background: var(--amber-deep); transform: translateY(-2px); }
.btn-ghost { border: 1.5px solid #9FBDB2; color: #E4EFE9; margin-left: 12px; }
.btn-ghost:hover { border-color: #fff; color: #fff; }
/* 浅色背景上的描边按钮：文字用深松绿，避免与浅色底重叠看不清 */
.btn-outline { background: transparent; border: 1.5px solid var(--pine); color: var(--pine); }
.btn-outline:hover { background: var(--pine); color: #fff; }
.btn-pine { background: var(--pine); color: #fff; }
.btn-pine:hover { background: var(--pine-deep); }
.hero-note { font-size: 14px; color: #9FBDB2; margin-top: 16px; }

/* 节律线：本站的签名元素 */
.rhythm { display: block; width: 100%; height: 90px; margin-top: 44px; }
.rhythm path { fill: none; stroke: var(--amber); stroke-width: 2.5; opacity: .9; }
.rhythm .ghost { stroke: #3D6B60; stroke-width: 1.5; }
@keyframes drift { to { transform: translateX(-220px); } }
.rhythm g { animation: drift 9s linear infinite; }

/* ---------- 通用区块 ---------- */
.section { padding: 72px 0; }
.section-alt { background: var(--white); border-top: 1px solid var(--moss-line); border-bottom: 1px solid var(--moss-line); }
.sec-eyebrow { font-size: 15px; letter-spacing: 3px; color: var(--amber-deep); margin-bottom: 10px; }
.sec-title {
  font-family: var(--serif); font-size: clamp(24px, 3.6vw, 34px);
  color: var(--pine); line-height: 1.5; margin-bottom: 18px;
}
.sec-lead { max-width: 720px; color: #46554E; margin-bottom: 36px; }
.center { text-align: center; }
.center .sec-lead { margin-left: auto; margin-right: auto; }

/* 卡片 */
.cards { display: grid; gap: 22px; grid-template-columns: 1fr; }
@media (min-width: 768px) { .cards-3 { grid-template-columns: repeat(3, 1fr); } .cards-2 { grid-template-columns: repeat(2, 1fr); } }
.card {
  background: var(--white); border: 1px solid var(--moss-line);
  border-radius: 14px; padding: 30px 26px;
  box-shadow: 0 2px 10px rgba(23,67,59,.05);
}
.section-alt .card { background: var(--mist); }
.card h3 { font-family: var(--serif); font-size: 21px; color: var(--pine); margin-bottom: 10px; }
.card p { font-size: 17px; color: #46554E; }
.card .card-icon { font-size: 30px; margin-bottom: 12px; display: block; }
.card a.more { display: inline-block; margin-top: 14px; font-weight: 600; color: var(--amber-deep); text-decoration: none; }
.card a.more:hover { text-decoration: underline; }

/* 信号自查清单 */
.signal-list { list-style: none; display: grid; gap: 12px; grid-template-columns: 1fr; max-width: 760px; }
@media (min-width: 700px) { .signal-list { grid-template-columns: 1fr 1fr; } }
.signal-list li {
  background: var(--white); border: 1px solid var(--moss-line); border-left: 4px solid var(--amber);
  border-radius: 10px; padding: 14px 18px; font-size: 17px;
}

/* 步骤 */
.steps { counter-reset: step; display: grid; gap: 22px; }
@media (min-width: 768px) { .steps { grid-template-columns: repeat(3, 1fr); } }
.step { position: relative; padding: 26px 24px 24px; background: var(--white); border: 1px solid var(--moss-line); border-radius: 14px; }
.step::before {
  counter-increment: step; content: counter(step);
  position: absolute; top: -18px; left: 22px;
  width: 38px; height: 38px; border-radius: 50%;
  background: var(--pine); color: #E8C87E; font-family: var(--serif); font-size: 19px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.step h3 { font-family: var(--serif); font-size: 20px; color: var(--pine); margin: 6px 0 8px; }
.step p { font-size: 16.5px; color: #46554E; }

/* 读者反馈 */
.quotes { display: grid; gap: 22px; }
@media (min-width: 768px) { .quotes { grid-template-columns: repeat(3, 1fr); } }
.quote { background: var(--white); border: 1px solid var(--moss-line); border-radius: 14px; padding: 26px 24px; font-size: 16.5px; color: #3B4A43; }
.quote footer { margin-top: 14px; font-size: 15px; color: #6B7B73; }
.quote::before { content: "「"; font-family: var(--serif); font-size: 34px; color: var(--amber); line-height: 1; display: block; margin-bottom: 6px; }

/* FAQ */
.faq details { background: var(--white); border: 1px solid var(--moss-line); border-radius: 12px; margin-bottom: 14px; padding: 4px 22px; }
.faq summary { font-size: 18px; font-weight: 600; color: var(--pine); padding: 14px 0; cursor: pointer; list-style: none; position: relative; padding-right: 34px; }
.faq summary::after { content: "＋"; position: absolute; right: 2px; color: var(--amber-deep); font-size: 22px; }
.faq details[open] summary::after { content: "－"; }
.faq details p { padding: 0 0 18px; color: #46554E; font-size: 17px; }

/* 页脚 */
.cta-band { background: var(--pine); color: #fff; text-align: center; padding: 64px 20px; }
.cta-band h2 { font-family: var(--serif); font-size: clamp(24px, 3.4vw, 32px); margin-bottom: 14px; }
.cta-band p { color: #CFE0D8; max-width: 620px; margin: 0 auto 30px; }
.site-footer { background: var(--pine-deep); color: #9FBDB2; font-size: 15px; padding: 36px 20px 44px; }
.site-footer .wrap { display: grid; gap: 18px; }
.site-footer a { color: #CFE0D8; text-decoration: none; margin-right: 18px; }
.site-footer a:hover { text-decoration: underline; }
.disclaimer { border-top: 1px solid #24534A; padding-top: 18px; font-size: 13.5px; line-height: 1.9; color: #7EA093; }

/* ---------- 工具页 ---------- */
.tool-grid { display: grid; gap: 26px; grid-template-columns: 1fr; }
@media (min-width: 900px) { .tool-grid { grid-template-columns: 1fr 1fr; } }
.tool {
  background: var(--white); border: 1px solid var(--moss-line); border-radius: 16px;
  padding: 30px 26px;
}
.tool h3 { font-family: var(--serif); font-size: 22px; color: var(--pine); margin-bottom: 6px; }
.tool .tool-desc { font-size: 16px; color: #6B7B73; margin-bottom: 20px; }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 16px; font-weight: 600; margin-bottom: 6px; color: var(--pine); }
.field input, .field select {
  width: 100%; font-size: 18px; padding: 13px 14px;
  border: 1.5px solid #B9CCC0; border-radius: 10px; background: #fff; color: var(--ink);
}
.field input:focus, .field select:focus { outline: 3px solid rgba(192,138,45,.35); border-color: var(--amber); }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.tool button {
  width: 100%; font-size: 18px; font-weight: 700; letter-spacing: 1px;
  padding: 15px; border: none; border-radius: 10px; cursor: pointer;
  background: var(--amber); color: #fff; margin-top: 6px;
}
.tool button:hover { background: var(--amber-deep); }
.result {
  margin-top: 18px; padding: 18px; border-radius: 10px;
  background: var(--mist); border: 1px dashed #B9CCC0;
  font-size: 17px; display: none;
}
.result.show { display: block; }
.result strong { color: var(--pine); font-size: 22px; font-family: var(--serif); }
.result .tag { display: inline-block; padding: 2px 12px; border-radius: 999px; font-size: 15px; margin-left: 8px; color: #fff; }
.coming { opacity: .75; }
.coming h3::after { content: "  即将上线"; font-family: var(--sans); font-size: 13px; color: #fff; background: #8FA69C; padding: 2px 10px; border-radius: 999px; vertical-align: middle; margin-left: 8px; }

/* 工具页：分类标题、锚点导航、问卷选项 */
.tool-cat { grid-column: 1 / -1; margin: 26px 0 -8px; scroll-margin-top: 80px; }
.tool-cat:first-of-type { margin-top: 0; }
.tool-cat h2 { font-family: var(--serif); font-size: 22px; color: var(--pine); display: flex; align-items: center; gap: 14px; }
.tool-cat h2 .cn { white-space: nowrap; }
.tool-cat h2::after { content: ""; flex: 1; height: 1px; background: var(--moss-line); }
.tool-nav { display: flex; flex-wrap: wrap; gap: 8px; margin: 6px 0 30px; }
.tool-nav a { font-size: 14px; color: var(--pine); background: var(--white); border: 1px solid var(--moss-line); border-radius: 999px; padding: 6px 14px; text-decoration: none; }
.tool-nav a:hover { border-color: var(--amber); color: var(--amber-deep); }
.tool { scroll-margin-top: 80px; }
.tool .q { font-weight: 600; color: var(--pine); margin: 14px 0 8px; font-size: 16px; }
.opts { display: flex; flex-direction: column; gap: 8px; margin-bottom: 6px; }
.opts label { display: flex; align-items: center; gap: 10px; font-size: 15.5px; font-weight: 400; color: var(--ink); background: var(--mist); border: 1px solid var(--moss-line); border-radius: 10px; padding: 10px 14px; cursor: pointer; }
.opts label:hover { border-color: var(--amber); }
.opts input { accent-color: var(--pine); width: 18px; height: 18px; flex: none; }

/* ---------- 百科页 ---------- */
.wiki-list { display: grid; gap: 18px; }
@media (min-width: 768px) { .wiki-list { grid-template-columns: 1fr 1fr; } }
.wiki-item { background: var(--white); border: 1px solid var(--moss-line); border-radius: 14px; padding: 24px 24px; }
.wiki-item h3 { font-family: var(--serif); font-size: 20px; color: var(--pine); }
.wiki-item .latin { font-size: 14px; color: #8FA69C; letter-spacing: 1px; margin-bottom: 8px; }
.wiki-item p { font-size: 16.5px; color: #46554E; }
.badge { display: inline-block; font-size: 13.5px; color: var(--amber-deep); background: rgba(192,138,45,.12); border-radius: 999px; padding: 2px 12px; margin-bottom: 10px; }

/* ---------- 文章排版（服务/关于页正文） ---------- */
.prose h2 { font-family: var(--serif); font-size: 26px; color: var(--pine); margin: 44px 0 14px; line-height: 1.5; }
.prose p { margin-bottom: 18px; color: #37453F; }
.prose ul { margin: 0 0 18px 22px; color: #37453F; }
.prose li { margin-bottom: 8px; }
.prose .highlight-box {
  background: var(--white); border-left: 5px solid var(--amber);
  border-radius: 0 12px 12px 0; padding: 22px 24px; margin: 26px 0;
  box-shadow: 0 2px 10px rgba(23,67,59,.05);
}
.price-card {
  background: var(--pine); color: #fff; border-radius: 18px;
  padding: 38px 30px; text-align: center; margin: 40px 0;
}
.price-card .price { font-family: var(--serif); font-size: 44px; color: #E8C87E; }
.price-card .price small { font-size: 18px; color: #CFE0D8; }
.price-card p { color: #CFE0D8; font-size: 16px; margin: 10px 0 24px; }

/* ---------- 微信公众号二维码卡片 ---------- */
.qr-card {
  max-width: 620px; margin: 22px auto 0; display: block;
  border: 1px solid var(--moss-line); border-radius: 14px;
  box-shadow: 0 4px 16px rgba(23,67,59,.08);
}
.qr-hint { text-align: center; font-size: 15px; color: #6B7B73; margin-top: 10px; }

/* ---------- 百科精选文章卡片 ---------- */
.feature-list { display: grid; gap: 22px; grid-template-columns: 1fr; }
@media (min-width: 768px) { .feature-list { grid-template-columns: 1fr 1fr; } }
.feature {
  display: flex; flex-direction: column;
  background: var(--white); border: 1px solid var(--moss-line);
  border-top: 4px solid var(--amber); border-radius: 14px;
  padding: 28px 26px; text-decoration: none; color: inherit;
  box-shadow: 0 2px 10px rgba(23,67,59,.05);
  transition: transform .15s ease, box-shadow .15s ease;
}
.feature:hover { transform: translateY(-3px); box-shadow: 0 8px 22px rgba(23,67,59,.12); }
.feature .badge { align-self: flex-start; }
.feature h3 { font-family: var(--serif); font-size: 21px; color: var(--pine); line-height: 1.5; margin-bottom: 12px; }
.feature p { font-size: 16.5px; color: #46554E; flex-grow: 1; }
.feature .read-more { display: inline-flex; align-items: center; gap: 6px; margin-top: 16px; font-weight: 600; color: var(--amber-deep); }
.feature .read-more::after { content: "↗"; }

/* ---------- 百科专题长文 ---------- */
.topic-article {
  background: var(--white); border: 1px solid var(--moss-line);
  border-radius: 16px; padding: 38px 34px; margin-bottom: 52px;
  box-shadow: 0 3px 14px rgba(23,67,59,.06);
}
@media (max-width: 600px) { .topic-article { padding: 28px 22px; } }
.topic-article .badge { margin-bottom: 14px; }
.topic-article h2 {
  font-family: var(--serif); font-size: clamp(22px,3.2vw,30px);
  color: var(--pine); line-height: 1.5; margin: 0 0 8px;
}
.topic-article .topic-sub { color: #6B7B73; font-size: 16px; margin-bottom: 24px; }
.topic-article p { color: #37453F; margin-bottom: 17px; }
.topic-article h3 { font-family: var(--serif); font-size: 20px; color: var(--pine); margin: 30px 0 12px; }
.topic-article strong { color: var(--pine); }

/* 公司层级比喻表 */
.org-chart { display: grid; gap: 10px; margin: 22px 0 8px; }
.org-row {
  display: grid; grid-template-columns: 150px 1fr; gap: 14px; align-items: baseline;
  background: var(--mist); border-left: 4px solid var(--amber);
  border-radius: 0 10px 10px 0; padding: 12px 16px;
}
@media (max-width: 520px) { .org-row { grid-template-columns: 1fr; gap: 2px; } }
.org-row .role { font-family: var(--serif); font-weight: 700; color: var(--pine); font-size: 17px; }
.org-row .desc { color: #46554E; font-size: 16px; }

/* 调控链路 */
.chain {
  background: var(--pine); color: #E4EFE9; border-radius: 12px;
  padding: 22px 24px; margin: 24px 0; font-size: 16.5px; line-height: 2.1;
}
.chain b { color: #E8C87E; font-weight: 600; }
.chain .arrow { color: var(--amber); padding: 0 6px; }

/* ============================================================
   LOHS 重构新增组件
   ============================================================ */

/* ---------- 使命标语条 ---------- */
.mission-band {
  background: var(--white); border-top: 1px solid var(--moss-line); border-bottom: 1px solid var(--moss-line);
  text-align: center; padding: 46px 20px;
}
.mission-band .mission-text {
  font-family: var(--serif); font-size: clamp(20px, 3vw, 28px);
  color: var(--pine); line-height: 1.7; max-width: 820px; margin: 0 auto;
}
.mission-band .mission-text em { font-style: normal; color: var(--amber-deep); }

/* 信条带：核心标语，深松绿底 */
.creed-band { background: linear-gradient(180deg, var(--pine) 0%, var(--pine-deep) 100%); color: #fff; text-align: center; padding: 60px 20px; }
.creed-band .creed-main {
  font-family: var(--serif); font-weight: 600;
  font-size: clamp(22px, 3.4vw, 32px); line-height: 1.75;
  max-width: 860px; margin: 0 auto; letter-spacing: .02em;
}
.creed-band .creed-main em { font-style: normal; color: #E8C87E; }
.creed-band .creed-sub {
  font-family: var(--serif); font-size: clamp(16px, 2.2vw, 20px);
  color: #CFE0D8; letter-spacing: .26em; text-indent: .26em; margin-top: 22px;
}
.creed-band .creed-rule {
  width: 54px; height: 2px; background: var(--amber);
  border: none; margin: 26px auto 0; opacity: .9;
}

/* ---------- 六大板块 ---------- */
.pillars { display: grid; gap: 22px; grid-template-columns: 1fr; margin-top: 40px; text-align: left; }
@media (min-width: 640px) { .pillars { grid-template-columns: 1fr 1fr; } }
@media (min-width: 980px) { .pillars { grid-template-columns: repeat(3, 1fr); } }
.pillar {
  position: relative; display: flex; flex-direction: column;
  background: var(--white); border: 1px solid var(--moss-line);
  border-radius: 16px; padding: 30px 26px 26px; text-decoration: none; color: inherit;
  box-shadow: 0 2px 10px rgba(23,67,59,.05);
  transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease;
  overflow: hidden;
}
.pillar::before {
  content: attr(data-num);
  position: absolute; top: 14px; right: 20px;
  font-family: var(--serif); font-size: 60px; font-weight: 700;
  color: rgba(23,67,59,.06); line-height: 1;
}
.pillar:hover { transform: translateY(-4px); box-shadow: 0 10px 26px rgba(23,67,59,.13); border-color: var(--amber); }
.pillar .p-icon { font-size: 28px; margin-bottom: 12px; }
.pillar h3 { font-family: var(--serif); font-size: 21px; color: var(--pine); margin-bottom: 4px; }
.pillar .p-en { font-size: 13px; letter-spacing: 1px; color: #8FA69C; margin-bottom: 12px; }
.pillar p { font-size: 16px; color: #46554E; flex-grow: 1; }
.pillar .p-go { margin-top: 16px; font-weight: 600; color: var(--amber-deep); font-size: 15.5px; }
.pillar .p-go::after { content: " →"; }
.pillar.soon .p-go { color: #8FA69C; }
.pillar.soon .p-go::after { content: " · 陆续更新"; }

/* ---------- 学科声明 / 提示框 ---------- */
.notice {
  background: linear-gradient(180deg, rgba(192,138,45,.07), rgba(192,138,45,.03));
  border: 1px solid rgba(192,138,45,.35); border-radius: 14px;
  padding: 24px 26px; margin: 30px 0; color: #46554E; font-size: 16.5px; line-height: 1.9;
}
.notice strong { color: var(--pine); }

/* ---------- 学习路线（荷尔蒙学院 / 通用） ---------- */
.path { position: relative; margin: 34px 0 10px; padding-left: 8px; }
.path::before { content: ""; position: absolute; left: 25px; top: 8px; bottom: 8px; width: 2px; background: var(--moss-line); }
.path-step { position: relative; padding: 0 0 26px 62px; }
.path-step:last-child { padding-bottom: 0; }
.path-step .dot {
  position: absolute; left: 8px; top: 0; width: 36px; height: 36px; border-radius: 50%;
  background: var(--pine); color: #E8C87E; font-family: var(--serif); font-weight: 700; font-size: 17px;
  display: flex; align-items: center; justify-content: center; z-index: 1;
}
.path-step h4 { font-family: var(--serif); font-size: 18.5px; color: var(--pine); margin-bottom: 4px; }
.path-step p { font-size: 16px; color: #46554E; }

/* ---------- 三问网格（什么是生命秩序） ---------- */
.tri { display: grid; gap: 22px; grid-template-columns: 1fr; margin-top: 36px; }
@media (min-width: 820px) { .tri { grid-template-columns: repeat(3, 1fr); } }
.tri-card {
  background: var(--white); border: 1px solid var(--moss-line); border-top: 4px solid var(--amber);
  border-radius: 14px; padding: 28px 26px;
}
.tri-card .q { font-family: var(--serif); font-size: 20px; color: var(--pine); margin-bottom: 10px; }
.tri-card p { font-size: 16.5px; color: #46554E; }

/* ---------- AI 助手演示 ---------- */
.ai-demo {
  background: var(--white); border: 1px solid var(--moss-line); border-radius: 18px;
  padding: 8px 8px 20px; box-shadow: 0 3px 16px rgba(23,67,59,.07); max-width: 760px; margin: 0 auto;
}
.ai-head {
  background: var(--pine); color: #fff; border-radius: 12px; padding: 16px 22px;
  display: flex; align-items: center; gap: 12px; margin-bottom: 6px;
}
.ai-head .avatar { width: 40px; height: 40px; border-radius: 50%; background: var(--amber); display: flex; align-items: center; justify-content: center; font-size: 20px; }
.ai-head b { font-family: var(--serif); font-size: 18px; }
.ai-head span { display: block; font-size: 13px; color: #BBD3CB; }
.ai-body { padding: 14px 16px; min-height: 120px; }
.bubble { border-radius: 14px; padding: 14px 18px; margin-bottom: 14px; font-size: 16.5px; line-height: 1.85; max-width: 88%; }
.bubble.user { background: var(--pine); color: #fff; margin-left: auto; border-bottom-right-radius: 4px; }
.bubble.ai { background: var(--mist); border: 1px solid var(--moss-line); color: #37453F; border-bottom-left-radius: 4px; }
.bubble.ai .chain-mini { margin: 12px 0; font-family: var(--serif); color: var(--pine); font-size: 15.5px; line-height: 2; }
.bubble.ai .chain-mini b { color: var(--amber-deep); }
.bubble.ai .chain-mini .arrow { color: var(--amber); display: block; padding-left: 4px; }
.bubble.ai .tail { margin-top: 12px; font-size: 15px; color: #6B7B73; border-top: 1px dashed #B9CCC0; padding-top: 10px; }
.ai-chips { display: flex; flex-wrap: wrap; gap: 10px; padding: 8px 16px 0; }
.ai-chip {
  border: 1.5px solid #B9CCC0; background: #fff; color: var(--pine); border-radius: 999px;
  padding: 9px 18px; font-size: 15.5px; cursor: pointer; transition: all .15s ease;
}
.ai-chip:hover { border-color: var(--amber); background: rgba(192,138,45,.08); }

/* 延伸阅读分组小标题 */
.prose h3.read-group {
  font-family: var(--serif); font-size: 19px; color: var(--pine);
  letter-spacing: 1px; margin: 34px 0 16px; padding-bottom: 10px;
  border-bottom: 1px solid var(--moss-line); position: relative;
}
.prose h3.read-group::after {
  content: ""; position: absolute; left: 0; bottom: -1px;
  width: 46px; height: 3px; background: var(--amber); border-radius: 2px;
}

/* ---------- 首页：Hero 热门工具快捷入口 ---------- */
.hero .quick-tools { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-top: 30px; }
.hero .quick-tools .qt-label { flex-basis: 100%; width: 100%; text-align: center; color: #CFE0D8; font-size: 14px; letter-spacing: 1px; margin: 0 0 4px; }
.hero .quick-tools a { display: inline-flex; align-items: center; white-space: nowrap; font-size: 15px; color: #fff; background: rgba(255,255,255,.12); border: 1.5px solid rgba(255,255,255,.5); border-radius: 999px; padding: 9px 18px; text-decoration: none; transition: background .15s, border-color .15s, color .15s; }
.hero .quick-tools a:hover { background: var(--amber); border-color: var(--amber); color: #fff; }
.hero .quick-tools a.qt-all { background: var(--amber); border-color: var(--amber); font-weight: 700; }
.hero .quick-tools a.qt-all:hover { background: var(--amber-deep); border-color: var(--amber-deep); }

/* ---------- 首页：创建初心背书 ---------- */
.origin-box { background: var(--mist); border: 1px solid var(--moss-line); border-left: 4px solid var(--amber); border-radius: 0 12px 12px 0; padding: 16px 20px; margin: 20px 0 18px; }
.origin-box .eb { font-size: 13px; letter-spacing: 2px; color: var(--amber-deep); margin-bottom: 6px; }
.origin-box p { margin: 0; color: #46554E; }
.origin-box a { font-weight: 600; color: var(--pine); text-decoration: none; border-bottom: 1px solid var(--amber); }
.origin-box a:hover { color: var(--amber-deep); }