/* =========================================================
   墨研小说创作台 · 宣传站样式系统
   基调：墨蓝 #2C4A6E（主） + 琥珀 #C77D3C（强调）
   结构：tokens → 基础 → 组件 → 页面区块 → 响应式
   ========================================================= */

:root {
  --ink:        #2C4A6E;
  --ink-deep:   #1d3147;
  --ink-soft:   #3a5f86;
  --ink-mist:   #6c87a3;
  --amber:      #C77D3C;
  --amber-soft: #e0a064;
  --amber-deep: #a9622a;
  --good:       #3f8f5a;
  --bad:        #c2553f;

  --bg:       #fbfaf7;
  --bg-tint:  #f3efe6;
  --bg-dark:  #1b2c3f;
  --paper:    #ffffff;

  --text:      #28303a;
  --text-soft: #5a626c;
  --line:      #e6e0d3;
  --line-soft: #efeae0;

  --shadow-sm: 0 1px 3px rgba(28, 44, 63, .06), 0 4px 14px rgba(28, 44, 63, .05);
  --shadow-md: 0 8px 30px rgba(28, 44, 63, .10);
  --shadow-lg: 0 20px 60px rgba(28, 44, 63, .16);

  --radius:    16px;
  --radius-sm: 10px;
  --maxw:      1140px;

  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
               "Source Han Sans SC", "Noto Sans SC", system-ui, -apple-system, sans-serif;
  --font-serif: "Songti SC", "STSong", "SimSun", "Source Han Serif SC",
                "Noto Serif SC", Georgia, "Times New Roman", serif;
}

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

html { scroll-behavior: smooth; scroll-padding-top: 84px; }

body {
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--bg);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
strong { font-weight: 700; }
code {
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: .88em;
  background: rgba(44, 74, 110, .08);
  color: var(--ink-deep);
  padding: 1px 6px;
  border-radius: 5px;
}
:focus-visible { outline: 2px solid var(--amber); outline-offset: 3px; border-radius: 4px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .4em;
  padding: .72em 1.5em;
  border-radius: 999px;
  font-size: .96rem;
  font-weight: 600;
  letter-spacing: .02em;
  cursor: pointer;
  border: 1.5px solid transparent;
  transition: transform .18s ease, box-shadow .2s ease, background .2s ease, color .2s ease;
  white-space: nowrap;
}
.btn--lg { padding: .95em 2em; font-size: 1.05rem; }
.btn--block { width: 100%; }
.btn--primary { background: var(--ink); color: #fff; box-shadow: var(--shadow-sm); }
.btn--primary:hover { background: var(--ink-deep); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn--amber { background: var(--amber); color: #fff; box-shadow: var(--shadow-sm); }
.btn--amber:hover { background: var(--amber-deep); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn--ghost { background: transparent; color: var(--ink); border-color: var(--ink); }
.btn--ghost:hover { background: rgba(44, 74, 110, .07); transform: translateY(-2px); }
.btn--light { background: rgba(255, 255, 255, .1); color: #fff; border-color: rgba(255, 255, 255, .35); }
.btn--light:hover { background: rgba(255, 255, 255, .18); transform: translateY(-2px); }

/* ---------- 导航 ---------- */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  background: rgba(251, 250, 247, .84);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .25s ease, box-shadow .25s ease, background .25s ease;
}
.nav.is-scrolled { border-color: var(--line); box-shadow: 0 2px 18px rgba(28, 44, 63, .06); }
.nav__inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 13px 22px;
  display: flex;
  align-items: center;
  gap: 18px;
}
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); flex: none; }
.brand__mark { color: var(--ink); display: grid; place-items: center; }
.brand__name {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: .05em;
  line-height: 1.05;
  white-space: nowrap;
}
.brand__name small {
  font-family: var(--font-sans);
  font-size: .6rem;
  font-weight: 600;
  letter-spacing: .16em;
  color: var(--amber);
  display: block;
  margin-top: 3px;
}
.nav__links { display: flex; gap: 2px; margin-left: auto; }
.nav__links a {
  padding: 8px 13px;
  border-radius: 999px;
  font-size: .91rem;
  color: var(--text-soft);
  font-weight: 500;
  transition: color .18s, background .18s;
  white-space: nowrap;
}
.nav__links a:hover { color: var(--ink); background: rgba(44, 74, 110, .06); }
.nav__links a.is-active { color: var(--ink); background: rgba(44, 74, 110, .1); font-weight: 600; }
.nav__btn { margin-left: 8px; flex: none; }
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 42px; height: 42px;
  border: none; background: transparent; cursor: pointer;
  align-items: center; justify-content: center;
}
.nav__toggle span { width: 22px; height: 2px; background: var(--ink); border-radius: 2px; transition: .25s; }
.nav.is-open .nav__toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav.is-open .nav__toggle span:nth-child(2) { opacity: 0; }
.nav.is-open .nav__toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- 面包屑 ---------- */
.breadcrumb { font-size: .85rem; color: var(--ink-mist); margin-bottom: 18px; }
.breadcrumb ol { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.breadcrumb li { display: flex; align-items: center; gap: 8px; }
.breadcrumb li + li::before { content: "/"; color: var(--line); }
.breadcrumb a:hover { color: var(--amber); }
.breadcrumb [aria-current="page"] { color: var(--text-soft); }

/* ---------- 通用区块 ---------- */
.section { padding: 92px 22px; max-width: var(--maxw); margin: 0 auto; }
.section--tint {
  max-width: none;
  background: linear-gradient(180deg, rgba(243, 239, 230, .55), rgba(243, 239, 230, 0));
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}
.section--tint > * { max-width: var(--maxw); margin-left: auto; margin-right: auto; }
.section__head { text-align: center; max-width: 780px; margin: 0 auto 54px; }
.section__head--left { text-align: left; margin-left: 0; }
.kicker {
  display: inline-block;
  font-size: .81rem;
  font-weight: 700;
  letter-spacing: .14em;
  color: var(--amber-deep);
  margin-bottom: 14px;
}
.kicker--light { color: var(--amber-soft); }
.section__head h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.65rem, 3.3vw, 2.45rem);
  line-height: 1.32;
  color: var(--ink-deep);
}
.section__head h2 em { font-style: normal; color: var(--amber); }
.section__sub { margin-top: 15px; color: var(--text-soft); font-size: 1.02rem; }

/* GEO：可直接被摘引的结论句 */
.lead-answer {
  font-size: 1.08rem;
  color: var(--text);
  background: var(--paper);
  border-left: 4px solid var(--amber);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 20px 24px;
  box-shadow: var(--shadow-sm);
}
.lead-answer strong { color: var(--ink); }

/* ---------- 首页 Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 130px 22px 80px;
  overflow: hidden;
}
.hero__bg {
  position: absolute; inset: 0; z-index: 0;
  background:
    radial-gradient(1200px 600px at 78% -10%, rgba(199, 125, 60, .16), transparent 60%),
    radial-gradient(900px 500px at 8% 12%, rgba(44, 74, 110, .14), transparent 55%),
    linear-gradient(180deg, #ffffff 0%, #f6f2ea 100%);
}
.hero__bg::after {
  content: "";
  position: absolute; inset: 0;
  background-image: radial-gradient(rgba(44, 74, 110, .05) 1px, transparent 1px);
  background-size: 22px 22px;
  -webkit-mask-image: linear-gradient(180deg, #000, transparent 70%);
  mask-image: linear-gradient(180deg, #000, transparent 70%);
}
.hero__inner { position: relative; z-index: 1; max-width: var(--maxw); margin: 0 auto; width: 100%; }
.hero__eyebrow {
  font-size: .95rem; font-weight: 600; letter-spacing: .04em;
  color: var(--ink-soft); margin-bottom: 22px;
}
.hero__title {
  font-family: var(--font-serif);
  font-size: clamp(2.8rem, 8vw, 5.4rem);
  line-height: 1.08;
  color: var(--ink-deep);
  letter-spacing: .02em;
  font-weight: 700;
}
.hero__title .hl { color: var(--amber); }
.hero__lead {
  margin-top: 26px;
  max-width: 640px;
  font-size: clamp(1.05rem, 1.6vw, 1.22rem);
  color: var(--text-soft);
}
.hero__lead strong { color: var(--ink); }
.hero__cta { margin-top: 36px; display: flex; gap: 16px; flex-wrap: wrap; }
.hero__facts { margin-top: 54px; display: flex; gap: 14px; flex-wrap: wrap; }
.hero__facts li {
  flex: 1 1 200px;
  background: rgba(255, 255, 255, .72);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 16px 18px;
  box-shadow: var(--shadow-sm);
}
.hero__facts b {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.25rem;
  color: var(--ink);
  margin-bottom: 4px;
}
.hero__facts span { font-size: .9rem; color: var(--text-soft); }
.hero__scroll {
  position: absolute;
  bottom: 26px; left: 50%; transform: translateX(-50%);
  z-index: 1;
  font-size: .82rem; letter-spacing: .12em;
  color: var(--ink-mist);
  animation: floaty 2.2s ease-in-out infinite;
}
@keyframes floaty { 0%, 100% { transform: translate(-50%, 0); } 50% { transform: translate(-50%, 7px); } }

/* ---------- 内页 Hero ---------- */
.page-hero {
  position: relative;
  padding: 140px 22px 70px;
  overflow: hidden;
  background:
    radial-gradient(900px 460px at 82% -10%, rgba(199, 125, 60, .15), transparent 60%),
    radial-gradient(760px 420px at 5% 8%, rgba(44, 74, 110, .13), transparent 55%),
    linear-gradient(180deg, #ffffff 0%, #f7f3ec 100%);
  border-bottom: 1px solid var(--line-soft);
}
.page-hero__inner { max-width: var(--maxw); margin: 0 auto; position: relative; z-index: 1; }
.page-hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.1rem, 5vw, 3.5rem);
  line-height: 1.2;
  color: var(--ink-deep);
  letter-spacing: .01em;
  max-width: 900px;
}
.page-hero__lead {
  margin-top: 22px;
  max-width: 760px;
  font-size: clamp(1.02rem, 1.5vw, 1.18rem);
  color: var(--text-soft);
}
.page-hero__lead strong { color: var(--ink); }
.page-hero__meta { margin-top: 30px; display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  font-size: .82rem;
  font-weight: 600;
  color: var(--ink-soft);
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 6px 14px;
  border-radius: 999px;
}
.chip--amber { color: var(--amber-deep); background: rgba(199, 125, 60, .1); border-color: rgba(199, 125, 60, .3); }

/* ---------- 网格与卡片 ---------- */
.grid { display: grid; gap: 22px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }

.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 26px;
  box-shadow: var(--shadow-sm);
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: #d9d0bd; }
.card__icon {
  font-size: 1.85rem;
  width: 56px; height: 56px;
  display: grid; place-items: center;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(44, 74, 110, .08), rgba(199, 125, 60, .12));
  margin-bottom: 16px;
}
.card h3 { font-family: var(--font-serif); font-size: 1.2rem; color: var(--ink-deep); margin-bottom: 8px; }
.card p { color: var(--text-soft); font-size: .95rem; }
.card__tag {
  align-self: flex-start;
  font-size: .75rem; font-weight: 700; letter-spacing: .08em;
  background: rgba(44, 74, 110, .1); color: var(--ink);
  padding: 5px 12px; border-radius: 999px; margin-bottom: 14px;
}
.card__tag--amber { background: rgba(199, 125, 60, .16); color: var(--amber-deep); }
.card__tag--good { background: rgba(63, 143, 90, .13); color: var(--good); }
.card__pill {
  display: inline-block;
  margin-top: 16px;
  font-size: .79rem; font-weight: 600;
  color: var(--ink-soft);
  background: var(--bg-tint);
  border: 1px solid var(--line);
  padding: 5px 12px; border-radius: 999px;
}
.card--pain { border-top: 3px solid var(--amber); }
.card--pain .card__icon { background: linear-gradient(135deg, rgba(199, 125, 60, .14), rgba(199, 125, 60, .05)); }
.card--adv { border-top: 3px solid var(--ink); }

/* 功能页：带编号的功能卡 */
.card--feature { position: relative; padding-top: 30px; }
.card--feature .card__idx {
  position: absolute; top: 20px; right: 22px;
  font-family: var(--font-serif);
  font-size: 2rem; font-weight: 700;
  color: var(--line); line-height: 1;
}
.card--feature ul { margin-top: 12px; display: grid; gap: 7px; }
.card--feature ul li {
  font-size: .9rem; color: var(--text-soft);
  padding-left: 16px; position: relative;
}
.card--feature ul li::before {
  content: ""; position: absolute; left: 0; top: 10px;
  width: 5px; height: 5px; border-radius: 50%; background: var(--amber);
}

/* ---------- 流水线 ---------- */
.flow { display: grid; gap: 0; }
.flow__step {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 22px;
  align-items: start;
  padding: 24px 0;
  border-bottom: 1px dashed var(--line);
}
.flow__step:last-child { border-bottom: none; }
.flow__num {
  font-family: var(--font-serif);
  font-size: 2.4rem; font-weight: 700;
  color: var(--amber); line-height: 1; opacity: .9;
}
.flow__body h3 { font-size: 1.3rem; margin-bottom: 6px; color: var(--ink-deep); font-family: var(--font-serif); }
.flow__body p { color: var(--text-soft); }
.flow__body .flow__note {
  display: inline-block;
  margin-top: 10px;
  font-size: .82rem;
  color: var(--ink-soft);
  background: var(--bg-tint);
  border: 1px solid var(--line);
  padding: 4px 11px;
  border-radius: 999px;
}

/* ---------- 铁律横幅 ---------- */
.rule-banner {
  margin-top: 40px;
  display: flex;
  align-items: center;
  gap: 18px;
  background: linear-gradient(135deg, var(--ink), var(--ink-deep));
  color: #fff;
  border-radius: var(--radius);
  padding: 22px 26px;
  box-shadow: var(--shadow-md);
}
.rule-banner__badge {
  flex: none;
  font-weight: 800; letter-spacing: .1em;
  background: var(--amber); color: #fff;
  padding: 8px 14px; border-radius: 10px; font-size: .9rem;
}
.rule-banner p { font-size: 1.02rem; }
.rule-banner strong { color: var(--amber-soft); }

/* ---------- 对比 ---------- */
.compare { display: grid; grid-template-columns: 1fr 64px 1fr; align-items: stretch; }
.compare__col {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 28px;
  box-shadow: var(--shadow-sm);
}
.compare__col--us { border-color: var(--ink); box-shadow: var(--shadow-md); position: relative; }
.compare__col--us::before {
  content: "墨研小说创作台";
  position: absolute; top: -13px; left: 28px;
  background: var(--ink); color: #fff;
  font-size: .74rem; font-weight: 700; letter-spacing: .08em;
  padding: 5px 12px; border-radius: 999px;
}
.compare__title { font-family: var(--font-serif); font-size: 1.25rem; color: var(--ink-deep); margin-bottom: 10px; }
.compare__note { font-size: .92rem; color: var(--text-soft); margin-bottom: 18px; }
.compare__list { display: grid; gap: 14px; }
.compare__list li { display: flex; align-items: flex-start; gap: 10px; font-size: .96rem; color: var(--text); }
.compare__list b { color: var(--ink); }
.dot { flex: none; width: 11px; height: 11px; border-radius: 50%; margin-top: 7px; }
.dot--bad { background: var(--bad); }
.dot--good { background: var(--good); }
.compare__divider { display: grid; place-items: center; }
.compare__divider span {
  font-family: var(--font-serif); font-weight: 700;
  color: var(--amber); background: var(--bg);
  padding: 8px 10px; border-radius: 999px; border: 1px solid var(--line);
}
.moat__punch {
  text-align: center;
  font-family: var(--font-serif);
  font-size: clamp(1.4rem, 3vw, 2.1rem);
  color: var(--ink-deep);
  margin-top: 44px;
}
.moat__punch strong { color: var(--amber); }

/* ---------- 拆书 callout ---------- */
.feature-callout {
  margin-top: 40px;
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 30px;
  background: linear-gradient(135deg, rgba(199, 125, 60, .08), rgba(44, 74, 110, .06));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 34px 32px;
}
.feature-callout__text h3 { font-family: var(--font-serif); font-size: 1.45rem; color: var(--ink-deep); margin: 10px 0 12px; }
.feature-callout__text p { color: var(--text-soft); }
.feature-callout__list { display: grid; gap: 12px; align-content: center; }
.feature-callout__list li { font-size: .95rem; color: var(--text); }
.feature-callout__list li:last-child { color: var(--ink-soft); font-size: .9rem; }

/* ---------- 适合谁 ---------- */
.fit { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.fit__col {
  border-radius: var(--radius);
  padding: 30px;
  border: 1px solid var(--line);
  background: var(--paper);
  box-shadow: var(--shadow-sm);
}
.fit__col--yes { border-top: 4px solid var(--good); }
.fit__col--no { border-top: 4px solid var(--bad); }
.fit__col h3 { font-family: var(--font-serif); font-size: 1.22rem; margin-bottom: 16px; color: var(--ink-deep); }
.fit__col ul { display: grid; gap: 12px; }
.fit__col li { color: var(--text-soft); font-size: .98rem; padding-left: 24px; position: relative; }
.fit__col--yes li::before { content: "✓"; position: absolute; left: 0; color: var(--good); font-weight: 700; }
.fit__col--no li::before { content: "✕"; position: absolute; left: 0; color: var(--bad); font-weight: 700; }

/* ---------- 统计数字（GEO 便于摘引） ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.stat {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 22px 20px;
  text-align: center;
  box-shadow: var(--shadow-sm);
}
.stat b {
  display: block;
  font-family: var(--font-serif);
  font-size: 2.1rem;
  color: var(--ink);
  line-height: 1.1;
}
.stat span { font-size: .86rem; color: var(--text-soft); }

/* ---------- 表格 ---------- */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  box-shadow: var(--shadow-sm);
  -webkit-overflow-scrolling: touch;
}
table { width: 100%; border-collapse: collapse; min-width: 620px; font-size: .93rem; }
caption {
  caption-side: top;
  text-align: left;
  padding: 18px 22px 12px;
  font-family: var(--font-serif);
  font-size: 1.08rem;
  color: var(--ink-deep);
  font-weight: 700;
}
th, td { padding: 13px 22px; text-align: left; border-top: 1px solid var(--line-soft); vertical-align: top; }
thead th {
  background: var(--bg-tint);
  color: var(--ink);
  font-weight: 700;
  font-size: .9rem;
  white-space: nowrap;
}
tbody th { font-weight: 600; color: var(--ink); }
tbody tr:hover { background: rgba(244, 241, 234, .5); }
td.is-good { color: var(--good); font-weight: 600; }
td.is-bad { color: var(--bad); }

/* ---------- 步骤（HowTo） ---------- */
.howto { counter-reset: step; display: grid; gap: 14px; }
.howto__step {
  counter-increment: step;
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 16px;
  align-items: start;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 18px 20px;
  box-shadow: var(--shadow-sm);
}
.howto__step::before {
  content: counter(step);
  width: 34px; height: 34px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: var(--ink); color: #fff;
  font-weight: 700; font-size: .95rem;
}
.howto__step h3 { font-size: 1.05rem; margin-bottom: 4px; color: var(--ink-deep); }
.howto__step p { color: var(--text-soft); font-size: .94rem; }

/* ---------- 深色区块 ---------- */
.hybrid {
  margin-top: 34px;
  background: var(--bg-dark);
  color: #e9eef4;
  border-radius: var(--radius);
  padding: 30px 32px;
  box-shadow: var(--shadow-md);
}
.hybrid h3 { font-family: var(--font-serif); font-size: 1.3rem; margin-bottom: 10px; color: #fff; }
.hybrid p { color: #c5d1de; font-size: .98rem; }
.hybrid strong { color: var(--amber-soft); }
.hybrid__tip { margin-top: 12px; font-size: .9rem; color: #aebccb; }

.section--story {
  max-width: none;
  background:
    radial-gradient(800px 500px at 80% 0%, rgba(199, 125, 60, .18), transparent 60%),
    linear-gradient(160deg, var(--ink-deep), #14233a);
  color: #eef2f7;
}
.section--story > * { max-width: 820px; margin-left: auto; margin-right: auto; }
.story__inner { padding: 108px 22px; text-align: center; }
.story__inner h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  line-height: 1.4;
  margin: 16px 0 28px;
  color: #fff;
}
.story__inner p { color: #c8d3df; font-size: 1.05rem; margin-bottom: 18px; }
.story__sign {
  margin-top: 26px;
  font-family: var(--font-serif);
  font-size: 1.3rem;
  color: var(--amber-soft);
  letter-spacing: .08em;
}

/* ---------- 结尾 CTA ---------- */
.cta-end { background: var(--bg-tint); border-top: 1px solid var(--line); padding: 88px 22px; }
.cta-end__inner { max-width: 780px; margin: 0 auto; text-align: center; }
.cta-end h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.7rem, 3.6vw, 2.5rem);
  color: var(--ink-deep);
  margin-bottom: 30px;
}
.cta-end .hero__cta { justify-content: center; }

/* ---------- FAQ ---------- */
.faq { display: grid; gap: 12px; max-width: 860px; margin: 0 auto; }
.faq details {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.faq details[open] { border-color: var(--amber); box-shadow: var(--shadow-md); }
.faq summary {
  cursor: pointer;
  padding: 18px 40px;
  font-weight: 600;
  color: var(--ink-deep);
  font-size: 1.02rem;
  list-style: none;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  transition: color .18s;
}
.faq summary:hover { color: var(--amber-deep); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::before {
  content: "＋";
  flex: none;
  width: 24px; height: 24px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: rgba(44, 74, 110, .09);
  color: var(--ink);
  font-size: .95rem;
  font-weight: 700;
  line-height: 1;
  margin-top: 2px;
  transition: transform .2s ease, background .2s ease, color .2s ease;
}
.faq details[open] summary::before { content: "－"; background: var(--amber); color: #fff; transform: rotate(180deg); }
.faq summary span { flex: 1; }
.faq__body { padding: 4px 40px 26px 70px; color: var(--text-soft); font-size: .97rem; }
.faq__body p + p { margin-top: 10px; }
.faq__body strong { color: var(--ink); }
.faq__body ul { margin: 10px 0 0; display: grid; gap: 6px; }
.faq__body ul li { padding-left: 18px; position: relative; }
.faq__body ul li::before { content: "·"; position: absolute; left: 6px; color: var(--amber); font-weight: 700; }

/* ---------- 页面内目录 ---------- */
.toc {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 20px 24px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 40px;
}
.toc h2 { font-size: .95rem; color: var(--ink-deep); margin-bottom: 10px; font-weight: 700; }
.toc ol { display: flex; flex-wrap: wrap; gap: 6px 10px; }
.toc a {
  font-size: .89rem;
  color: var(--ink-soft);
  background: var(--bg-tint);
  padding: 5px 12px;
  border-radius: 999px;
  transition: background .18s, color .18s;
}
.toc a:hover { background: var(--ink); color: #fff; }

/* ---------- 上下页导航 ---------- */
.page-nav {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 22px 80px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.page-nav a {
  display: block;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 18px 22px;
  box-shadow: var(--shadow-sm);
  transition: transform .18s, box-shadow .2s, border-color .2s;
}
.page-nav a:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--amber); }
.page-nav small { display: block; font-size: .78rem; color: var(--ink-mist); letter-spacing: .1em; margin-bottom: 4px; }
.page-nav strong { font-family: var(--font-serif); font-size: 1.1rem; color: var(--ink-deep); }
.page-nav a.is-next { text-align: right; }

/* ---------- 页脚 ---------- */
.footer { background: var(--bg-dark); color: #c5d1de; padding: 56px 22px 28px; }
.footer__inner {
  max-width: var(--maxw); margin: 0 auto;
  display: flex; justify-content: space-between; gap: 30px; flex-wrap: wrap;
  padding-bottom: 28px; border-bottom: 1px solid rgba(255, 255, 255, .1);
}
.brand__name--footer { color: #fff; font-size: 1.3rem; }
.footer__brand p { margin-top: 8px; color: #93a3b5; font-size: .92rem; }
.footer__links { display: flex; flex-wrap: wrap; gap: 6px 18px; align-items: center; }
.footer__links a { color: #aebccb; font-size: .92rem; transition: color .18s; }
.footer__links a:hover { color: var(--amber-soft); }
.footer__copy { max-width: var(--maxw); margin: 20px auto 0; text-align: center; font-size: .84rem; color: #7c8a9b; }

/* ---------- 页脚 · 旗下产品矩阵 ---------- */
.footer__matrix { max-width: var(--maxw); margin: 26px auto 0;
  display: flex; flex-direction: column; align-items: center; gap: .6rem; }
.fp-label { font-size: .74rem; letter-spacing: .14em; color: #8b9bad; }
.fp-chips { display: flex; flex-wrap: wrap; justify-content: center; gap: .45rem; max-width: 1040px; }
.fp-chip { font-size: .78rem; color: #b6c3d1; text-decoration: none; white-space: nowrap;
  background: rgba(255, 255, 255, .05); border: 1px solid rgba(255, 255, 255, .11);
  border-radius: 999px; padding: .3rem .78rem;
  transition: color .18s, border-color .18s, background .18s; }
.fp-chip:hover { color: #fff; border-color: rgba(199, 125, 60, .55); background: rgba(199, 125, 60, .12); }
.fp-chip-current { color: #fff; font-weight: 600;
  background: rgba(199, 125, 60, .16); border-color: rgba(199, 125, 60, .55); }

/* ---------- 页脚 · 版权 / 备案 / 出品署名 ---------- */
.footer__meta { max-width: var(--maxw); margin: 22px auto 0; text-align: center; }
.footer__copy strong { color: #aebccb; font-weight: 600; }
.footer__sep { margin: 0 .45rem; color: #4b5a6b; }
.footer__icp { max-width: var(--maxw); margin: 8px auto 0; text-align: center;
  font-size: .78rem; color: #6d7b8c; }
.footer__icp a { color: inherit; text-decoration: none; transition: color .18s; }
.footer__icp a:hover { color: var(--amber-soft); }
.footer__note { margin-top: .45rem; font-size: .78rem; color: #5f6d7e; }
.engine-credit { max-width: var(--maxw); margin: 20px auto 0; padding-top: 16px;
  border-top: 1px dashed rgba(255, 255, 255, .13); text-align: center;
  font-size: .8rem; color: #8b9bad; letter-spacing: .02em; }
.engine-credit strong { color: #b6c3d1; font-weight: 600; }
.engine-credit a { font-weight: 700; color: var(--amber-soft); text-decoration: none;
  border-bottom: 1px solid rgba(224, 160, 100, .35); transition: color .18s, border-color .18s; }
.engine-credit a:hover { color: #fff; border-bottom-color: var(--amber-soft); }

/* ---------- 进场动画 ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1000px) {
  .stats { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: 1fr 1fr; }
  .feature-callout { grid-template-columns: 1fr; }
  .compare { grid-template-columns: 1fr; }
  .compare__divider { padding: 18px 0; }
  .compare__divider span { transform: rotate(90deg); }
}
@media (max-width: 820px) {
  .nav__links {
    position: fixed;
    inset: 62px 0 auto 0;
    flex-direction: column;
    background: rgba(251, 250, 247, .98);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line);
    padding: 12px 18px 20px;
    gap: 2px;
    transform: translateY(-140%);
    transition: transform .3s ease;
    box-shadow: var(--shadow-md);
    max-height: calc(100vh - 62px);
    overflow-y: auto;
  }
  .nav.is-open .nav__links { transform: translateY(0); }
  .nav__links a { padding: 12px 14px; font-size: 1rem; }
  .nav__btn { display: none; }
  .nav__toggle { display: flex; }
}
@media (max-width: 760px) {
  .section { padding: 68px 18px; }
  .grid--2, .grid--3, .fit { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
  .flow__step { grid-template-columns: 60px 1fr; gap: 14px; }
  .flow__num { font-size: 1.8rem; }
  .hero { min-height: auto; padding-top: 120px; }
  .page-hero { padding: 120px 18px 56px; }
  .rule-banner { flex-direction: column; align-items: flex-start; gap: 12px; }
  .hero__facts li { flex-basis: 100%; }
  .faq__body { padding-left: 22px; }
  .page-nav { grid-template-columns: 1fr; }
  .page-nav a.is-next { text-align: left; }
  .howto__step { grid-template-columns: 1fr; }
  .howto__step::before { width: 28px; height: 28px; }
}
@media (max-width: 420px) {
  .stats { grid-template-columns: 1fr; }
  .fp-chips { gap: .35rem; }
  .fp-chip { font-size: .74rem; padding: .28rem .62rem; }
}

/* ---------- 关于页 · 旗下产品家族 ---------- */
.pf-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.pf-card { background: var(--paper); border: 1px solid var(--line);
  border-radius: var(--radius-sm); padding: 20px 18px; height: 100%;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease; }
.pf-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: rgba(199, 125, 60, .45); }
.pf-card.is-current { border-color: var(--amber);
  background: linear-gradient(135deg, rgba(199, 125, 60, .08), rgba(199, 125, 60, .01)); }
.pf-name { display: flex; align-items: center; gap: .5rem; flex-wrap: wrap;
  font-family: var(--font-serif); font-size: 1.02rem; font-weight: 700;
  color: var(--ink-deep); margin-bottom: .45rem; }
.pf-tag { font-family: var(--font-sans); font-size: .62rem; font-weight: 700; letter-spacing: .06em;
  color: #fff; background: var(--amber); border-radius: 999px; padding: .12rem .55rem; }
.pf-desc { font-size: .88rem; color: var(--text-soft); line-height: 1.75; }
.pf-link { display: inline-block; margin-top: .7rem; font-size: .82rem;
  color: var(--amber-deep); text-decoration: none; border-bottom: 1px solid rgba(199, 125, 60, .35); }
.pf-link:hover { color: var(--ink-deep); border-bottom-color: var(--ink-deep); }

@media (max-width: 900px) {
  .pf-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .pf-grid { grid-template-columns: 1fr; }
}

/* ---------- 价格页 ---------- */
.price-note {
  margin-top: 26px; max-width: 880px;
  background: rgba(199, 125, 60, .10);
  border: 1px solid rgba(199, 125, 60, .35);
  border-left: 4px solid var(--amber);
  border-radius: 10px; padding: 14px 18px;
  font-size: .92rem; color: var(--ink-deep); line-height: 1.7;
}
.price-note b { color: var(--amber-deep); }

.price-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; align-items: stretch; margin-top: 8px; }
.tier {
  background: var(--paper); border: 1px solid var(--line); border-radius: 16px;
  padding: 26px 22px; display: flex; flex-direction: column; position: relative;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.tier:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.tier--feature { border-color: var(--amber); box-shadow: 0 14px 34px rgba(199, 125, 60, .14); }
.tier__badge {
  position: absolute; top: -13px; left: 50%; transform: translateX(-50%);
  background: var(--amber); color: #fff; font-size: .72rem; font-weight: 700;
  letter-spacing: .04em; padding: 4px 14px; border-radius: 999px; white-space: nowrap;
}
.tier__name { font-family: var(--font-serif); font-size: 1.25rem; color: var(--ink-deep); }
.tier__price { font-size: 2.1rem; font-weight: 800; color: var(--ink-deep); margin: 10px 0 2px; line-height: 1.1; }
.tier__price small { font-size: .9rem; font-weight: 500; color: var(--text-soft); }
.tier__quota { color: var(--amber-deep); font-size: .9rem; margin-bottom: 16px; }
.tier ul { list-style: none; display: grid; gap: 9px; margin: auto 0 18px; }
.tier ul li { font-size: .9rem; color: var(--text-soft); padding-left: 22px; position: relative; line-height: 1.5; }
.tier ul li::before { content: "✓"; position: absolute; left: 0; top: 0; color: var(--good); font-weight: 700; }
.tier .btn { margin-top: auto; }
.tier__price .ph, .tier__quota .ph { color: var(--amber-deep); font-weight: 800; }
.ph { background: rgba(199, 125, 60, .12); border-radius: 4px; padding: 0 6px; }

.price-foot { margin-top: 20px; font-size: .9rem; color: var(--text-soft); text-align: center; }

.private-card {
  margin-top: 10px; background: var(--paper); border: 1px solid var(--line);
  border-radius: 16px; padding: 28px 26px;
  display: grid; grid-template-columns: 1.6fr 1fr; gap: 26px; align-items: center;
}
.private-card__body h3 { font-family: var(--font-serif); font-size: 1.25rem; color: var(--ink-deep); margin-bottom: 12px; }
.private-card__body ul { list-style: none; display: grid; gap: 9px; }
.private-card__body ul li { font-size: .92rem; color: var(--text-soft); padding-left: 22px; position: relative; }
.private-card__body ul li::before { content: "✓"; position: absolute; left: 0; color: var(--good); font-weight: 700; }
.private-card__price { margin-top: 14px; font-size: 1rem; color: var(--ink-deep); }
.private-card__cta { display: flex; flex-direction: column; gap: 12px; align-items: flex-start; }

.faq { max-width: 860px; margin: 0 auto; }
.faq__item { background: var(--paper); border: 1px solid var(--line); border-radius: 12px; padding: 4px 20px; margin-bottom: 12px; }
.faq__item summary { cursor: pointer; padding: 14px 0; font-weight: 600; color: var(--ink-deep); list-style: none; }
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary span::after { content: "＋"; float: right; color: var(--amber); font-weight: 700; }
.faq__item[open] summary span::after { content: "－"; }
.faq__body { padding: 0 0 16px; color: var(--text-soft); line-height: 1.8; }
.faq__body p { margin: 0; }

@media (max-width: 1100px) {
  .price-grid { grid-template-columns: repeat(2, 1fr); max-width: 760px; margin-left: auto; margin-right: auto; }
}
@media (max-width: 900px) {
  .private-card { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .price-grid { grid-template-columns: 1fr; max-width: 420px; }
}