/* ==========================================================================
   GetAIVIP · 设计系统
   --------------------------------------------------------------------------
   原则(取自 Awwwards 评审标准:性能20% 创新20% UX15% 视觉15%):
     · 克制 —— 强调色只占约 5% 画面,其余靠灰阶与留白
     · 动效即沟通 —— 只动 transform/opacity,保证 60fps
     · 专业缓动 —— expo-out 曲线,不用默认 ease
     · 光学排版 —— 字号越大,字距越紧、行高越小
     · 材质 —— 2% 噪点,让扁平不至于"塑料"
   ========================================================================== */

/* ---------- 字体:全部走系统字体栈,不外链任何 Google 字体 ----------
   原因:fonts.googleapis.com / fonts.gstatic.com 在中国大陆被墙,@import 是
   render-blocking,会把首屏卡到超时(15-30s),重创国内 LCP 与百度 SEO。
   Latin 由 Instrument Sans 的系统兜底(见 --f),等宽由 ui-monospace 兜底(见 --m),
   观感无损。此策略与 views/partials/head-meta.php 的说明保持一致。 */

:root {
  /* 纸:暖中性,不是死白 */
  --bg:      #F4F4F2;
  --surface: #FFFFFF;
  --sunk:    #EBEBE8;

  /* 墨:五阶 */
  --ink:   #0E1013;
  --ink-2: #45484F;
  --ink-3: #7B7F88;
  --ink-4: #ADB1B8;
  --ink-5: #D6D8DB;

  /* 强调:电光靛。只用在极少数地方 —— 全站不超过 5% 面积 */
  --acc:      #2F2BEB;
  --acc-soft: rgba(47, 43, 235, 0.08);

  --ok:  #12805F;
  --bad: #C1352B;

  /* 线:发丝级 */
  --hair:   rgba(14, 16, 19, 0.09);
  --hair-2: rgba(14, 16, 19, 0.16);

  /* 字体 */
  --f: "Instrument Sans", "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei",
       -apple-system, system-ui, sans-serif;
  --m: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  /* 缓动:专业曲线 */
  --e-out:  cubic-bezier(0.16, 1, 0.3, 1);      /* expo out —— 快起慢收 */
  --e-soft: cubic-bezier(0.4, 0, 0.2, 1);

  --shell: 1240px;
  --gut: 32px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
  -webkit-text-size-adjust: 100%;
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
  .rv { opacity: 1 !important; transform: none !important; }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--f);
  font-size: 16px;
  line-height: 1.68;
  font-feature-settings: "kern" 1, "liga" 1, "calt" 1;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;

  /* sticky footer:内容不足一屏时,页脚顶到屏幕最下方;
     内容够长时正常往下排。纯 CSS,不用 JS。 */
  min-height: 100vh;   /* 老浏览器(不认 svh)兜底 */
  min-height: 100svh;  /* 现代浏览器:排除移动端地址栏,避免 100vh 溢出 */
  display: flex;
  flex-direction: column;
}
body > main { flex: 1 0 auto; }
body > .ft { flex-shrink: 0; }

/* 材质:2% 噪点。让扁平的浅色底有"纸"的质感,不是塑料 */
body::after {
  content: "";
  position: fixed; inset: 0; z-index: 9999; pointer-events: none;
  opacity: 0.028;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)'/%3E%3C/svg%3E");
}

a { color: inherit; text-decoration: none; }
:focus-visible { outline: 2px solid var(--acc); outline-offset: 3px; border-radius: 2px; }
::selection { background: var(--acc); color: #fff; }

.shell { width: 100%; max-width: var(--shell); margin: 0 auto; padding: 0 var(--gut); }
@media (max-width: 700px) { :root { --gut: 20px; } }

/* ---------- 滚动入场:错峰,只动 transform/opacity ---------- */
.rv {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.9s var(--e-out), transform 0.9s var(--e-out);
  transition-delay: var(--d, 0ms);
}
.rv.in { opacity: 1; transform: none; }

/* ---------- 标题遮罩上推(比淡入高级) ---------- */
.mask { overflow: hidden; display: block; }
.mask > span {
  display: block;
  transform: translateY(105%);
  transition: transform 1.05s var(--e-out);
  transition-delay: var(--d, 0ms);
}
.in .mask > span, .mask.in > span { transform: none; }

/* ---------- 等宽微标签 ---------- */
.lbl {
  font-family: var(--m); font-size: 12.5px; font-weight: 500;
  letter-spacing: 0.05em; text-transform: uppercase; color: var(--ink-2);
}

/* ==========================================================================
   顶栏
   ========================================================================== */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  transition: background 0.5s var(--e-soft), border-color 0.5s var(--e-soft), backdrop-filter 0.5s;
  border-bottom: 1px solid transparent;
}
.nav.stuck {
  background: rgba(244, 244, 242, 0.78);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom-color: var(--hair);
}
.nav-in { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--m); font-size: 14px; font-weight: 600; letter-spacing: -0.01em;
}
.brand i {
  width: 7px; height: 7px; border-radius: 50%; background: var(--acc);
  display: block; font-style: normal;
}
.nav-links { display: flex; gap: 30px; }
.nav-links a {
  position: relative; font-size: 14px; color: var(--ink-2);
  transition: color 0.4s var(--e-soft);
}
.nav-links a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -4px; height: 1px;
  background: var(--ink); transform: scaleX(0); transform-origin: right;
  transition: transform 0.5s var(--e-out);
}
.nav-links a:hover { color: var(--ink); }
.nav-links a:hover::after { transform: scaleX(1); transform-origin: left; }
@media (max-width: 640px) { .nav-links a.hide-sm { display: none; } }

/* ==========================================================================
   开篇
   ========================================================================== */
.hero { padding: 190px 0 110px; position: relative; }

.hero-lbl {
  display: flex; align-items: center; gap: 12px; margin-bottom: 34px;
  font-size: 13.5px; letter-spacing: 0.04em; color: var(--ink-2);
}
.hero-lbl i {
  width: 26px; height: 1px; background: var(--ink-4); display: block; font-style: normal;
}

/* 光学排版:字号越大,字距越紧、行高越小 */
.hero h1 {
  margin: 0 0 34px;
  font-size: clamp(40px, 6.6vw, 88px);
  line-height: 1.02;
  font-weight: 600;
  letter-spacing: -0.042em;
  color: var(--ink);
}
.hero h1 .dim { color: var(--ink-4); }
.hero h1 .acc { color: var(--acc); }

.hero-p {
  margin: 0; font-size: clamp(16px, 1.35vw, 19px);
  line-height: 1.72; color: var(--ink-2); max-width: 50ch;
  letter-spacing: -0.008em;
}
.hero-p b { color: var(--ink); font-weight: 600; }

/* 首屏按钮组 */
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 40px; }
.btn-a, .btn-b {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 15px; font-weight: 600; letter-spacing: -0.008em;
  padding: 16px 26px; border-radius: 5px; min-height: 50px;
  transition: gap 0.5s var(--e-out), background 0.4s var(--e-soft),
              border-color 0.4s var(--e-soft), transform 0.5s var(--e-out);
}
.btn-a {
  background: var(--acc); color: #fff;
  box-shadow: 0 6px 20px -8px rgba(47,43,235,0.5);
}
.btn-a:hover { background: #3F3BF0; color: #fff; gap: 16px; transform: translateY(-1px); }
.btn-b {
  background: transparent; color: var(--ink);
  border: 1px solid var(--hair-2);
}
.btn-b:hover { border-color: var(--ink); gap: 16px; }
.btn-a i, .btn-b i { font-style: normal; font-family: var(--m); font-size: 14px; }
@media (max-width: 480px) {
  .hero-cta { flex-direction: column; align-items: stretch; }
  .btn-a, .btn-b { justify-content: center; }
}

/* 底部一条细数据带 */
.hero-strip {
  display: grid; grid-template-columns: repeat(4, 1fr);
  margin-top: 68px; border-top: 1px solid var(--hair);
}
@media (max-width: 760px) { .hero-strip { grid-template-columns: repeat(2, 1fr); } }
.hs { padding: 26px 24px 0 0; }
.hs-v {
  font-family: var(--m); font-size: clamp(26px, 3vw, 38px); font-weight: 500;
  letter-spacing: -0.04em; line-height: 1; margin-bottom: 8px;
  font-variant-numeric: tabular-nums;
}
.hs-v em { font-style: normal; font-size: 0.44em; color: var(--ink-4); margin-left: 3px; letter-spacing: 0; }
.hs-k { font-size: 14px; color: var(--ink-2); }
@media (max-width: 760px) { .hs { padding-bottom: 22px; } }

/* ==========================================================================
   分节
   ========================================================================== */
.sec { padding: 118px 0; border-top: 1px solid var(--hair); }
.sec-h { margin-bottom: 54px; }
.sec-h .lbl { display: block; margin-bottom: 20px; font-size: 13px; color: var(--ink-2); }
.sec-h h2 {
  margin: 0 0 14px; font-size: clamp(26px, 3.2vw, 42px);
  font-weight: 600; letter-spacing: -0.032em; line-height: 1.12;
}
.sec-h p { margin: 0; color: var(--ink-3); font-size: 16px; max-width: 52ch; letter-spacing: -0.005em; }

/* ==========================================================================
   情况自查
   ========================================================================== */
.cases { border-top: 1px solid var(--hair-2); }
.case { border-bottom: 1px solid var(--hair); }
.case > summary { list-style: none; cursor: pointer; }
.case > summary::-webkit-details-marker { display: none; }
.case-hd {
  display: flex; align-items: center; gap: 28px; padding: 32px 8px 32px 0;
  transition: padding-left 0.6s var(--e-out);
}
.case:hover .case-hd { padding-left: 14px; }
.case-i {
  flex: none; font-family: var(--m); font-size: 12px; font-weight: 500;
  color: var(--ink-4); width: 30px; font-variant-numeric: tabular-nums;
  transition: color 0.5s var(--e-soft);
}
.case[open] .case-i, .case:hover .case-i { color: var(--acc); }
.case-t { flex: 1; min-width: 0; }
.case-t b {
  display: block; font-size: clamp(17px, 1.9vw, 22px); font-weight: 600;
  letter-spacing: -0.024em; line-height: 1.34;
}
.case-t span { display: block; font-size: 14px; color: var(--ink-3); margin-top: 6px; letter-spacing: -0.005em; }
.case-x {
  flex: none; width: 26px; height: 26px; position: relative;
  transition: transform 0.6s var(--e-out);
}
.case-x::before, .case-x::after {
  content: ""; position: absolute; background: var(--ink-3);
  transition: background 0.4s, transform 0.6s var(--e-out);
}
.case-x::before { left: 50%; top: 6px; bottom: 6px; width: 1px; margin-left: -0.5px; }
.case-x::after  { top: 50%; left: 6px; right: 6px; height: 1px; margin-top: -0.5px; }
.case[open] .case-x::before { transform: scaleY(0); }
.case[open] .case-x::after { background: var(--acc); }

.case-b { padding: 0 0 38px 58px; max-width: 66ch; }
@media (max-width: 640px) { .case-b { padding-left: 0; } }
.case-b p { margin: 0 0 16px; color: var(--ink-2); font-size: 15.5px; line-height: 1.82; letter-spacing: -0.005em; }
.case-b p b { color: var(--ink); font-weight: 600; }
.verdict {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--m); font-size: 11.5px; font-weight: 500; letter-spacing: 0.04em;
  color: var(--acc); background: var(--acc-soft);
  padding: 7px 12px; border-radius: 3px;
}
.verdict::before { content: ""; width: 5px; height: 5px; border-radius: 50%; background: var(--acc); }
.more {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--m); font-size: 12.5px; color: var(--ink);
  border-bottom: 1px solid var(--hair-2); padding-bottom: 3px;
  transition: gap 0.5s var(--e-out), border-color 0.4s;
}
.more:hover { gap: 14px; border-bottom-color: var(--ink); }

/* ==========================================================================
   安全避坑 —— 左「该做」/ 右「别做」两栏对照
   ========================================================================== */
.safe { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 820px) { .safe { grid-template-columns: 1fr; } }

.sf {
  background: var(--surface); border: 1px solid var(--hair);
  border-radius: 6px; overflow: hidden;
}
.sf-h {
  display: flex; align-items: center; gap: 11px;
  padding: 18px 24px; border-bottom: 1px solid var(--hair);
}
.sf-h b { font-size: 15.5px; font-weight: 600; letter-spacing: -0.018em; }
.sf-ic {
  width: 20px; height: 20px; border-radius: 50%; flex: none;
  display: grid; place-items: center;
  font-family: var(--m); font-size: 11px; font-weight: 600; line-height: 1;
}
.sf.do   .sf-ic { background: rgba(18,128,95,0.10); color: var(--ok); }
.sf.dont .sf-ic { background: rgba(193,53,43,0.09); color: var(--bad); }
.sf.do   .sf-h { background: rgba(18,128,95,0.035); }
.sf.dont .sf-h { background: rgba(193,53,43,0.03); }

.sf ul { list-style: none; margin: 0; padding: 0; }
.sf li { padding: 18px 24px; border-bottom: 1px solid var(--hair); }
.sf li:last-child { border-bottom: 0; }
.sf li b {
  display: block; font-size: 14.5px; font-weight: 600;
  letter-spacing: -0.014em; margin-bottom: 5px;
}
.sf li span {
  display: block; font-size: 13.5px; color: var(--ink-3);
  line-height: 1.72; letter-spacing: -0.005em;
}

/* 一条横贯的提醒 */
.warn-bar {
  display: flex; align-items: flex-start; gap: 14px;
  margin-top: 20px; padding: 20px 24px;
  background: var(--surface); border: 1px solid var(--hair);
  border-left: 2px solid var(--bad); border-radius: 0 6px 6px 0;
}
.warn-bar i {
  font-style: normal; font-family: var(--m); font-size: 11px; font-weight: 600;
  color: var(--bad); letter-spacing: 0.06em; text-transform: uppercase;
  flex: none; padding-top: 2px;
}
.warn-bar p { margin: 0; font-size: 14px; color: var(--ink-2); line-height: 1.75; letter-spacing: -0.005em; }
.warn-bar p b { color: var(--ink); font-weight: 600; }

/* ==========================================================================
   工具对比 —— 按「你要干什么」横向选,不是罗列参数
   ========================================================================== */
.pick-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 880px) { .pick-grid { grid-template-columns: 1fr; } }

.pk {
  background: var(--surface); border: 1px solid var(--hair);
  border-radius: 6px; padding: 28px 24px 24px;
  transition: transform 0.7s var(--e-out), box-shadow 0.7s var(--e-out), border-color 0.5s;
}
.pk:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 40px -22px rgba(14,16,19,0.16);
  border-color: var(--hair-2);
}
.pk-need {
  display: block; font-size: 17px; font-weight: 600;
  letter-spacing: -0.024em; margin-bottom: 20px; line-height: 1.4;
}
.pk-ans {
  display: flex; align-items: baseline; gap: 10px;
  padding-bottom: 16px; margin-bottom: 16px; border-bottom: 1px solid var(--hair);
}
.pk-ans em {
  font-style: normal; font-size: 22px; font-weight: 600;
  letter-spacing: -0.03em; color: var(--acc);
}
.pk-ans span {
  font-family: var(--m); font-size: 10.5px; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--ink-4);
}
.pk-why { margin: 0 0 16px; font-size: 14px; color: var(--ink-2); line-height: 1.75; letter-spacing: -0.005em; }
.pk-alt {
  margin: 0; font-size: 13px; color: var(--ink-3); line-height: 1.7;
  padding-top: 14px; border-top: 1px dashed var(--hair);
  letter-spacing: -0.005em;
}
.pk-alt b { color: var(--ink-2); font-weight: 600; }

/* 底下一行:预算只够一个怎么办 */
.pick-note {
  margin-top: 20px; padding: 22px 24px;
  background: var(--acc-soft); border: 1px solid rgba(47,43,235,0.14);
  border-radius: 6px;
  display: flex; align-items: flex-start; gap: 14px;
}
.pick-note i {
  font-style: normal; font-family: var(--m); font-size: 11px; font-weight: 600;
  color: var(--acc); letter-spacing: 0.06em; text-transform: uppercase;
  flex: none; padding-top: 2px;
}
.pick-note p { margin: 0; font-size: 14.5px; color: var(--ink-2); line-height: 1.75; letter-spacing: -0.005em; }
.pick-note p b { color: var(--ink); font-weight: 600; }

/* ==========================================================================
   工具索引
   ========================================================================== */
.tools { border-top: 1px solid var(--hair-2); }
.tool {
  display: flex; align-items: center; gap: 26px;
  padding: 26px 8px 26px 0; border-bottom: 1px solid var(--hair);
  transition: padding-left 0.6s var(--e-out);
}
.tool:hover { padding-left: 14px; }
.tool-k {
  font-family: var(--m); font-size: 12px; letter-spacing: 0.05em; color: var(--ink-3);
  width: 80px; flex: none; text-transform: uppercase;
}
.tool-n {
  flex: none; min-width: 110px; font-size: clamp(18px, 2vw, 23px);
  font-weight: 600; letter-spacing: -0.028em;
}
.tool-d { flex: 1; font-size: 14px; color: var(--ink-3); letter-spacing: -0.005em; }
.tool-a {
  flex: none; font-family: var(--m); font-size: 14px; color: var(--ink-4);
  transition: transform 0.6s var(--e-out), color 0.4s;
}
.tool:hover .tool-a { color: var(--acc); transform: translateX(5px); }
@media (max-width: 700px) { .tool-d { display: none; } }

/* ==========================================================================
   问答
   ========================================================================== */
.qa { border-top: 1px solid var(--hair-2); }
.qa-i {
  display: grid; grid-template-columns: 0.85fr 1.15fr; gap: 48px;
  padding: 32px 0; border-bottom: 1px solid var(--hair);
}
@media (max-width: 800px) { .qa-i { grid-template-columns: 1fr; gap: 12px; } }
.qa-q { margin: 0; font-size: 17px; font-weight: 600; letter-spacing: -0.022em; line-height: 1.48; }
.qa-a { margin: 0; color: var(--ink-2); font-size: 15px; line-height: 1.85; letter-spacing: -0.005em; }

/* ==========================================================================
   攻略
   ========================================================================== */
.posts { border-top: 1px solid var(--hair-2); }
.post {
  display: flex; align-items: baseline; gap: 26px;
  padding: 24px 8px 24px 0; border-bottom: 1px solid var(--hair);
  transition: padding-left 0.6s var(--e-out);
}
.post:hover { padding-left: 14px; }
.post-d { font-family: var(--m); font-size: 12.5px; color: var(--ink-3); flex: none; font-variant-numeric: tabular-nums; }
.post-t { flex: 1; font-size: clamp(16px, 1.6vw, 19px); font-weight: 500; letter-spacing: -0.022em; }
.post:hover .tool-a { color: var(--acc); transform: translateX(5px); }
.empty { padding: 40px 0; color: var(--ink-3); font-size: 14.5px; }

/* ==========================================================================
   收尾
   ========================================================================== */
.end { background: var(--ink); color: var(--bg); padding: 110px 0; }
.end h2 {
  margin: 0 0 24px; font-size: clamp(28px, 4vw, 54px);
  font-weight: 600; letter-spacing: -0.038em; line-height: 1.1;
}
.end h2 .acc { color: #8B88FF; }
.end p { margin: 0 0 44px; color: rgba(244,244,242,0.52); font-size: 16.5px; max-width: 46ch; line-height: 1.75; }
.btn {
  display: inline-flex; align-items: center; gap: 12px;
  background: var(--bg); color: var(--ink);
  font-size: 14.5px; font-weight: 600; letter-spacing: -0.01em;
  padding: 17px 28px; border-radius: 4px; min-height: 46px;
  transition: gap 0.5s var(--e-out), background 0.4s;
}
.btn:hover { gap: 20px; background: #fff; }
.btn i { font-style: normal; font-family: var(--m); }

/* ==========================================================================
   页脚
   ========================================================================== */
.ft { background: var(--ink); color: var(--bg); padding: 0 0 46px; }
.ft-g { display: flex; gap: 72px; flex-wrap: wrap; padding-top: 58px; border-top: 1px solid rgba(244,244,242,0.12); }
.ft-c h3 {
  font-family: var(--m); font-size: 12.5px; letter-spacing: 0.05em; text-transform: uppercase;
  color: rgba(244,244,242,0.52); margin: 0 0 16px; font-weight: 500;
}
.ft-c ul { list-style: none; margin: 0; padding: 0; }
.ft-c li { margin-bottom: 10px; }
.ft-c a { color: rgba(244,244,242,0.74); font-size: 14.5px; transition: color 0.4s; }
.ft-c a:hover { color: #fff; }
.ft-n {
  margin-top: 58px; padding-top: 28px; border-top: 1px solid rgba(244,244,242,0.12);
  font-size: 12.5px; color: rgba(244,244,242,0.4); line-height: 1.8;
}
.ft-n b { color: rgba(244,244,242,0.66); font-weight: 600; }

/* ==========================================================================
   内页 —— 文章 / 列表 / 品牌页 / 静态页
   与首页同一套 token,不新增设计语言
   ========================================================================== */

.page { padding: 128px 0 96px; }

/* 面包屑 */
.crumb {
  display: flex; align-items: center; gap: 9px; flex-wrap: wrap;
  font-family: var(--m); font-size: 13px; color: var(--ink-3);
  margin-bottom: 40px;
}
.crumb a { color: var(--ink-3); transition: color 0.4s var(--e-soft); }
.crumb a:hover { color: var(--ink); }
.crumb i { font-style: normal; color: var(--ink-5); }

/* 页头 */
.ph-head { max-width: 760px; margin-bottom: 56px; }
.ph-head h1 {
  margin: 0 0 20px; font-size: clamp(30px, 4.4vw, 52px);
  font-weight: 600; letter-spacing: -0.036em; line-height: 1.12;
}
.ph-head .lead { margin: 0; font-size: 17px; color: var(--ink-2); line-height: 1.75; letter-spacing: -0.006em; }
.ph-meta {
  display: flex; gap: 20px; flex-wrap: wrap; margin-top: 24px;
  font-family: var(--m); font-size: 13px; color: var(--ink-3);
}

/* ---------- 文章正文排版 ---------- */
.doc { max-width: 720px; padding-bottom: 40px; }
.doc h2 {
  margin: 56px 0 18px; font-size: clamp(21px, 2.4vw, 27px);
  font-weight: 600; letter-spacing: -0.028em; line-height: 1.3;
  padding-top: 30px; border-top: 1px solid var(--hair);
}
.doc h2:first-child { margin-top: 0; padding-top: 0; border-top: 0; }
.doc h3 { margin: 34px 0 12px; font-size: 18px; font-weight: 600; letter-spacing: -0.022em; }
.doc p { margin: 0 0 20px; font-size: 16.5px; line-height: 1.85; color: var(--ink-2); letter-spacing: -0.005em; }
.doc p strong, .doc li strong { color: var(--ink); font-weight: 600; }
.doc a { color: var(--acc); border-bottom: 1px solid rgba(47,43,235,0.22); transition: border-color 0.4s; }
.doc a:hover { border-bottom-color: var(--acc); }
.doc ul, .doc ol { margin: 0 0 22px; padding-left: 22px; }
.doc li { margin-bottom: 10px; font-size: 16.5px; line-height: 1.85; color: var(--ink-2); letter-spacing: -0.005em; }
.doc ul li::marker { color: var(--ink-4); }
.doc ol li::marker { color: var(--ink-3); font-family: var(--m); font-size: 0.86em; }
.doc table { width: 100%; border-collapse: collapse; margin: 0 0 26px; font-size: 15px; }
.doc th, .doc td { padding: 13px 14px; text-align: left; border-bottom: 1px solid var(--hair); }
.doc th { font-family: var(--m); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-3); font-weight: 500; }
.doc td { color: var(--ink-2); }
.doc img { max-width: 100%; height: auto; border-radius: 6px; border: 1px solid var(--hair); margin: 8px 0 26px; }

/* 文章里的 FAQ */
.faq-item { padding: 22px 0; border-bottom: 1px solid var(--hair); }
.faq-item:first-of-type { border-top: 1px solid var(--hair-2); }
.faq-q { font-size: 16.5px; font-weight: 600; letter-spacing: -0.02em; margin-bottom: 9px; }
.faq-a { font-size: 15.5px; color: var(--ink-2); line-height: 1.82; letter-spacing: -0.005em; }

/* 文末 CTA */
.article-cta {
  margin: 56px 0 0; padding: 32px 30px;
  background: var(--ink); color: var(--bg); border-radius: 8px;
}
.article-cta h3 { margin: 0 0 8px; font-size: 21px; font-weight: 600; letter-spacing: -0.026em; color: var(--bg); }
.article-cta p { margin: 0 0 24px; color: rgba(244,244,242,0.55); font-size: 15px; }
.article-cta-btn {
  display: inline-flex; align-items: center; gap: 10px;
  background: var(--bg); color: var(--ink);
  font-size: 14px; font-weight: 600; padding: 14px 24px; border-radius: 4px;
  border-bottom: 0 !important;
  transition: gap 0.5s var(--e-out), background 0.4s;
}
.article-cta-btn:hover { gap: 16px; background: #fff; color: var(--ink); }

/* 相关阅读 */
.related { margin-top: 64px; padding-top: 40px; border-top: 1px solid var(--hair-2); }
.related h2 { margin: 0 0 24px; font-size: 20px; font-weight: 600; letter-spacing: -0.024em; }
.related-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
@media (max-width: 700px) { .related-grid { grid-template-columns: 1fr; } }
.related-card {
  background: var(--surface); border: 1px solid var(--hair); border-radius: 6px;
  padding: 22px 20px; border-bottom: 1px solid var(--hair) !important;
  transition: transform 0.6s var(--e-out), border-color 0.4s;
}
.related-card:hover { transform: translateY(-3px); border-color: var(--hair-2); }
.related-card-title { font-size: 15.5px; font-weight: 600; letter-spacing: -0.02em; margin-bottom: 6px; color: var(--ink); }
.related-card-desc { font-size: 13.5px; color: var(--ink-3); line-height: 1.6; }

/* ---------- 博客列表 ---------- */
.list { border-top: 1px solid var(--hair-2); }
.li {
  display: flex; align-items: baseline; gap: 26px;
  padding: 26px 8px 26px 0; border-bottom: 1px solid var(--hair);
  transition: padding-left 0.6s var(--e-out);
}
.li:hover { padding-left: 14px; }
.li-d { font-family: var(--m); font-size: 12.5px; color: var(--ink-3); flex: none; font-variant-numeric: tabular-nums; }
.li-b { flex: 1; min-width: 0; }
.li-t { font-size: clamp(16px, 1.7vw, 20px); font-weight: 600; letter-spacing: -0.024em; line-height: 1.4; }
.li-x { display: block; margin-top: 6px; font-size: 14px; color: var(--ink-3); letter-spacing: -0.005em; }
.li:hover .tool-a { color: var(--acc); transform: translateX(5px); }

/* 分页 */
.pager { display: flex; gap: 10px; justify-content: center; margin-top: 56px; }
.pager a, .pager span {
  min-width: 40px; height: 40px; display: grid; place-items: center;
  font-family: var(--m); font-size: 13px; border: 1px solid var(--hair);
  border-radius: 4px; color: var(--ink-2); transition: all 0.4s var(--e-soft);
}
.pager a:hover { border-color: var(--ink); color: var(--ink); }
.pager .on { background: var(--ink); border-color: var(--ink); color: var(--bg); }

/* ---------- 品牌页套餐区(如果有) ---------- */
.hub-plans { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 18px; margin-bottom: 64px; }