/* ==========================================================================
   梦漫 mengmanapp.cc —— 共享样式
   第 5 档配色：暖砂白底 / 深墨蓝主色 / 莓红强调 / 暖琥珀点缀
   渲染语言：8px 圆角 + 1px 细描边 + 右下「硬边偏移落影」（纸张贴片感）
   动效：paperUp 入场（纯 CSS，逐条错峰）
   ========================================================================== */

:root {
  --sand: #FBF6F1;
  --sand-2: #F5EDE4;
  --sand-3: #EFE4D8;
  --white: #FFFFFF;
  --ink: #1B2742;
  --ink-2: #27385F;
  --ink-3: #3B4F7C;
  --ink-soft: #64719A;
  --berry: #DF3F63;
  --berry-d: #B92F52;
  --berry-l: #FDECF0;
  --amber: #E9A03A;
  --amber-l: #FDF3E3;
  --txt: #202A41;
  --txt-2: #5E6885;
  --line: #E7DCD1;
  --shadow-paper: 0 6px 0 -2px #E7DCD0;
  --shadow-soft: 0 14px 30px -22px rgba(27, 39, 66, .45);
  --r: 8px;
  --maxw: 1160px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--sand);
  color: var(--txt);
  font-family: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", "Noto Sans SC",
               "Source Han Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: .01em;
}

img { max-width: 100%; }

figure { margin: 0; }

a { color: var(--ink-2); text-decoration: none; }
a:hover { color: var(--berry); }

.wrap { width: min(100% - 44px, var(--maxw)); margin: 0 auto; }

/* ── 入场动效：paperUp（纯 CSS，逐条错峰）────────────────────────────── */
@keyframes paperUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}
.anim { animation: paperUp .62s cubic-bezier(.22, .72, .28, 1) both; }
.d1 { animation-delay: .05s; }
.d2 { animation-delay: .12s; }
.d3 { animation-delay: .19s; }
.d4 { animation-delay: .26s; }
.d5 { animation-delay: .33s; }
.d6 { animation-delay: .40s; }
@media (prefers-reduced-motion: reduce) {
  .anim { animation: none; }
}

/* ── 顶栏 ─────────────────────────────────────────────────────────── */
.head {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(251, 246, 241, .94);
  backdrop-filter: saturate(140%) blur(6px);
  border-bottom: 2px solid var(--ink);
}
.head-in {
  display: flex;
  align-items: center;
  gap: 18px;
  min-height: 68px;
}
.brand { display: flex; align-items: center; gap: 10px; flex: none; }
.brand img { width: 38px; height: 38px; display: block; }
.brand b {
  font-size: 21px;
  letter-spacing: .06em;
  color: var(--ink);
}
.nav { margin-left: auto; display: flex; align-items: center; gap: 4px; }
.nav a {
  white-space: nowrap;
  padding: 8px 14px;
  border-radius: var(--r);
  color: var(--ink-2);
  font-size: 15px;
}
.nav a:hover { background: var(--sand-2); color: var(--ink); }
.nav a[aria-current="page"] {
  color: var(--ink);
  background: var(--sand-2);
  box-shadow: inset 0 -2px 0 var(--berry);
}
.head .btn { margin-left: 10px; padding: 10px 18px; font-size: 15px; }
.burger {
  display: none;
  margin-left: auto;
  width: 42px; height: 38px;
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: var(--white);
  cursor: pointer;
  padding: 9px 9px;
}
.burger i { display: block; height: 2px; background: var(--ink); border-radius: 2px; }
.burger i + i { margin-top: 5px; }

/* ── 按钮 ─────────────────────────────────────────────────────────── */
.btn {
  display: inline-block;
  background: var(--berry);
  color: #fff;
  border: 1px solid var(--berry-d);
  border-radius: var(--r);
  padding: 12px 24px;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: .04em;
  box-shadow: var(--shadow-paper);
  transition: transform .18s ease, background .18s ease;
}
.btn:hover { background: var(--berry-d); color: #fff; transform: translateY(-2px); }
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--ink-3);
  box-shadow: none;
  font-weight: 500;
}
.btn-ghost:hover { background: var(--sand-2); color: var(--ink); }
.btn-dark {
  background: var(--ink-2);
  border-color: var(--ink);
  box-shadow: 0 6px 0 -2px #101a2e;
}
.btn-dark:hover { background: var(--ink); }

/* ── Hero（左文右图）──────────────────────────────────────────────── */
.hero {
  position: relative;
  overflow: hidden;
  color: #fff;
  background:
    radial-gradient(620px 380px at 88% 14%, rgba(223, 63, 99, .38), transparent 70%),
    repeating-linear-gradient(115deg, rgba(255, 255, 255, .045) 0 1px, transparent 1px 15px),
    linear-gradient(158deg, #121B2E 0%, #1B2742 46%, #27385F 78%, #3A2440 100%);
  border-bottom: 3px solid var(--amber);
}
.hero-in {
  display: flex;
  align-items: center;
  gap: 54px;
  padding: 62px 0 66px;
}
.hero-copy { flex: 1 1 56%; min-width: 0; }
.hero-shot { flex: 0 0 300px; max-width: 300px; }
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  letter-spacing: .16em;
  color: #F3D9A6;
  border: 1px solid rgba(233, 160, 58, .55);
  border-radius: 999px;
  padding: 5px 14px;
  margin-bottom: 18px;
}
.kicker::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--amber);
}
.hero h1 {
  margin: 0 0 16px;
  font-size: clamp(30px, 4.4vw, 46px);
  line-height: 1.24;
  letter-spacing: .03em;
  color: #fff;
}
.hero-lead {
  margin: 0 0 24px;
  max-width: 44em;
  font-size: 16.5px;
  color: #D6DEEE;
}
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin: 0 0 26px;
  padding: 0;
  list-style: none;
  font-size: 14px;
  color: #C3CEE4;
}
.hero-meta li { display: flex; align-items: center; gap: 7px; }
.hero-meta li::before {
  content: "";
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--amber);
}
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; }
.hero .btn-dark {
  background: rgba(255, 255, 255, .10);
  border-color: rgba(255, 255, 255, .40);
  box-shadow: none;
  color: #fff;
}
.hero .btn-dark:hover { background: rgba(255, 255, 255, .20); color: #fff; }
.hero-shot img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 20px;
  box-shadow: 0 22px 46px -20px rgba(0, 0, 0, .75), 0 0 0 5px rgba(255, 255, 255, .10);
}

/* ── 事实条 ───────────────────────────────────────────────────────── */
.facts {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin: -30px 0 0;
  position: relative;
  z-index: 2;
}
.facts div {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--r);
  box-shadow: var(--shadow-paper);
  padding: 16px 18px;
}
.facts dt { font-size: 13px; color: var(--txt-2); letter-spacing: .04em; }
.facts dd { margin: 4px 0 0; font-size: 17px; font-weight: 700; color: var(--ink); }

/* ── 区块 ─────────────────────────────────────────────────────────── */
.sec { padding: 78px 0 0; }
.sec-head { max-width: 62em; margin-bottom: 30px; }
.sec-head .tag {
  display: inline-block;
  font-size: 12.5px;
  letter-spacing: .18em;
  color: var(--berry);
  margin-bottom: 10px;
}
.sec h2 {
  margin: 0;
  font-size: clamp(22px, 2.5vw, 30px);
  line-height: 1.35;
  color: var(--ink);
  letter-spacing: .02em;
}
.sec h2::after {
  content: "";
  display: block;
  width: 46px;
  height: 4px;
  margin-top: 12px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--berry), var(--amber));
}
.sec-sub {
  margin: 14px 0 0;
  color: var(--txt-2);
  font-size: 15.5px;
}

/* 卡片网格 */
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.grid2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--r);
  box-shadow: var(--shadow-paper);
  padding: 24px 22px;
}
.card:hover { transform: translateY(-3px); transition: transform .2s ease; }
.card h3 {
  margin: 14px 0 8px;
  font-size: 17.5px;
  color: var(--ink);
}
.card p { margin: 0; font-size: 15px; color: var(--txt-2); }
.ico {
  width: 42px; height: 42px;
  border-radius: var(--r);
  background: var(--berry-l);
  display: grid;
  place-items: center;
}
.ico svg { width: 22px; height: 22px; fill: none; stroke: var(--berry); stroke-width: 1.9; }
.card:nth-child(3n+2) .ico { background: var(--amber-l); }
.card:nth-child(3n+2) .ico svg { stroke: var(--amber); }
.card:nth-child(3n) .ico { background: #E9EDF7; }
.card:nth-child(3n) .ico svg { stroke: var(--ink-3); }

/* 左右交错带 */
.band { display: flex; align-items: center; gap: 46px; margin: 24px 0 26px; }
.band.flip { flex-direction: row-reverse; }
.band-txt { flex: 1 1 54%; min-width: 0; }
.band-txt h3 { margin: 0 0 10px; font-size: 20px; color: var(--ink); }
.band-txt p { margin: 0 0 10px; color: var(--txt-2); font-size: 15.5px; }
.band-txt ul { margin: 0; padding-left: 19px; color: var(--txt-2); font-size: 15px; }
.band-txt li { margin-bottom: 5px; }
.band-fig { flex: 0 0 220px; max-width: 220px; }
.band-fig img {
  display: block; width: 100%; height: auto;
  border-radius: 16px;
  box-shadow: var(--shadow-soft), 0 0 0 1px var(--line);
}

/* ── 预览画廊 ─────────────────────────────────────────────────────── */
.gal { display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px; }
.gal figure {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--r);
  box-shadow: var(--shadow-paper);
  padding: 10px;
}
.gal img { display: block; width: 100%; height: auto; border-radius: 5px; }
.gal figcaption {
  margin-top: 9px;
  font-size: 13px;
  color: var(--txt-2);
  text-align: center;
}

/* ── 数据 / 评价 ──────────────────────────────────────────────────── */
.quote {
  background: var(--white);
  border: 1px solid var(--line);
  border-left: 4px solid var(--berry);
  border-radius: var(--r);
  box-shadow: var(--shadow-paper);
  padding: 20px 22px;
}
.quote p { margin: 0 0 12px; font-size: 15.5px; }
.quote footer { font-size: 13.5px; color: var(--txt-2); }
.stars { color: var(--amber); letter-spacing: .18em; font-size: 14px; }

/* ── FAQ ──────────────────────────────────────────────────────────── */
.faq { border-top: 1px solid var(--line); }
.faq details {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--r);
  box-shadow: var(--shadow-paper);
  margin-bottom: 12px;
  padding: 0 20px;
}
.faq summary {
  cursor: pointer;
  list-style: none;
  padding: 18px 0;
  font-size: 16.5px;
  font-weight: 600;
  color: var(--ink);
  display: flex;
  gap: 12px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::before {
  content: "Q";
  flex: none;
  width: 24px; height: 24px;
  border-radius: 6px;
  background: var(--berry-l);
  color: var(--berry);
  font-size: 13px;
  font-weight: 700;
  display: grid;
  place-items: center;
  margin-top: 3px;
}
.faq details[open] summary { color: var(--berry-d); }
.faq .a {
  margin: 0 0 20px 36px;
  color: var(--txt-2);
  font-size: 15.5px;
}

/* ── 深度入口卡 ───────────────────────────────────────────────────── */
.entry {
  display: block;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--r);
  box-shadow: var(--shadow-paper);
  padding: 24px 22px;
}
.entry:hover { border-color: var(--ink-3); transform: translateY(-3px); transition: transform .2s ease; }
.entry b { display: block; font-size: 18px; color: var(--ink); margin-bottom: 8px; }
.entry span { color: var(--txt-2); font-size: 15px; }
.entry em {
  display: block;
  margin-top: 14px;
  font-style: normal;
  font-size: 14px;
  color: var(--berry);
}

/* ── 正文（内页）──────────────────────────────────────────────────── */
.page-hero {
  background:
    repeating-linear-gradient(115deg, rgba(255, 255, 255, .05) 0 1px, transparent 1px 15px),
    linear-gradient(152deg, #16203A 0%, #1B2742 55%, #2C3B66 100%);
  color: #fff;
  border-bottom: 3px solid var(--amber);
  padding: 52px 0 54px;
}
.page-hero-in { display: flex; align-items: center; gap: 46px; }
.page-hero-copy { flex: 1 1 auto; min-width: 0; }
.page-hero h1 {
  margin: 0 0 14px;
  font-size: clamp(26px, 3.4vw, 38px);
  line-height: 1.28;
  color: #fff;
}
.page-hero .lead { margin: 0; max-width: 46em; color: #D6DEEE; font-size: 16px; }
.page-hero .crumb { font-size: 13px; color: #9FB0CE; margin-bottom: 14px; }
.page-hero .crumb a { color: #F3D9A6; }
.page-hero-fig { flex: 0 0 168px; max-width: 168px; }
.page-hero-fig img {
  display: block; width: 100%; height: auto;
  border-radius: 14px;
  box-shadow: 0 18px 34px -18px rgba(0, 0, 0, .7), 0 0 0 4px rgba(255, 255, 255, .10);
}

.prose { max-width: 800px; }
.prose h2 {
  margin: 46px 0 14px;
  font-size: 23px;
  color: var(--ink);
}
.prose h2:first-of-type { margin-top: 34px; }
.prose h2::after {
  content: ""; display: block; width: 40px; height: 4px; margin-top: 10px;
  border-radius: 2px; background: linear-gradient(90deg, var(--berry), var(--amber));
}
.prose h3 { margin: 28px 0 8px; font-size: 17.5px; color: var(--ink-2); }
.prose p { margin: 0 0 15px; color: var(--txt-2); }
.prose strong { color: var(--txt); }
.prose ul, .prose ol { margin: 0 0 16px; padding-left: 22px; color: var(--txt-2); }
.prose li { margin-bottom: 7px; }
.prose a { border-bottom: 1px solid rgba(223, 63, 99, .45); color: var(--berry-d); }
.prose a:hover { border-bottom-color: var(--berry); }
.prose .note {
  background: var(--white);
  border: 1px solid var(--line);
  border-left: 4px solid var(--amber);
  border-radius: var(--r);
  box-shadow: var(--shadow-paper);
  padding: 16px 20px;
  margin: 0 0 18px;
  font-size: 15px;
  color: var(--txt-2);
}
.prose .note b { color: var(--ink); }

/* 步骤条 */
.steps { list-style: none; margin: 0 0 20px; padding: 0; counter-reset: st; }
.steps li {
  position: relative;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--r);
  box-shadow: var(--shadow-paper);
  padding: 18px 22px 18px 66px;
  margin-bottom: 12px;
  color: var(--txt-2);
}
.steps li::before {
  counter-increment: st;
  content: counter(st, decimal-leading-zero);
  position: absolute;
  left: 20px; top: 18px;
  font-size: 15px;
  font-weight: 700;
  color: var(--berry);
  letter-spacing: .04em;
}
.steps b { color: var(--ink); display: block; margin-bottom: 4px; font-size: 16.5px; }

/* 表格 */
.tbl-cap, .tbl-note { font-size: 14px; color: var(--txt-2); margin: 0 0 10px; }
.tbl-scroll { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--r); background: var(--white); box-shadow: var(--shadow-paper); }
table { border-collapse: collapse; width: 100%; min-width: 560px; font-size: 15px; }
th, td { padding: 13px 16px; text-align: left; border-bottom: 1px solid var(--line); }
th { background: var(--sand-2); color: var(--ink); font-weight: 700; white-space: nowrap; }
td { color: var(--txt-2); }
tbody tr:last-child td { border-bottom: 0; }

/* ── 内页小节跳转条 ───────────────────────────────────────────────── */
.jump {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 26px 0 6px;
  padding: 14px 16px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--r);
  box-shadow: var(--shadow-paper);
}
.jump a {
  font-size: 14px;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--sand-2);
  color: var(--ink-2);
}
.jump a:hover { background: var(--berry-l); color: var(--berry-d); }

/* ── CTA ──────────────────────────────────────────────────────────── */
.cta {
  margin-top: 74px;
  background:
    radial-gradient(520px 300px at 14% 10%, rgba(233, 160, 58, .22), transparent 70%),
    linear-gradient(150deg, #172037 0%, #1D2A48 60%, #2B3B63 100%);
  color: #fff;
  border-radius: var(--r);
  border-bottom: 3px solid var(--amber);
  box-shadow: var(--shadow-soft);
  padding: 44px 40px;
  text-align: center;
}
.cta h2 {
  margin: 0 0 12px;
  font-size: clamp(21px, 2.4vw, 27px);
  color: #fff;
}
.cta h2::after { content: none; }
.cta p { margin: 0 0 24px; color: #CFD9EC; font-size: 15.5px; }
.cta .btn { font-size: 17px; padding: 14px 34px; }
.cta .fine { display: block; margin-top: 16px; font-size: 13px; color: #9AA9C6; }

/* ── 页脚 ─────────────────────────────────────────────────────────── */
.foot {
  margin-top: 84px;
  background: #131B2E;
  color: #A9B5CE;
  border-top: 3px solid var(--amber);
  padding: 46px 0 30px;
  font-size: 14.5px;
}
.foot-in { display: flex; flex-wrap: wrap; gap: 30px 60px; }
.foot-col { flex: 1 1 220px; min-width: 0; }
.foot h3 {
  margin: 0 0 12px;
  font-size: 14px;
  letter-spacing: .1em;
  color: #F0F3FA;
  font-weight: 700;
}
.foot ul { list-style: none; margin: 0; padding: 0; }
.foot li { margin-bottom: 8px; }
.foot a { color: #C6D0E4; }
.foot a:hover { color: var(--amber); }
.foot .brand-line { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.foot .brand-line img {
  width: 32px; height: 32px;
  border-radius: 9px;
  box-shadow: 0 0 0 1px rgba(240, 243, 250, .28);
}
.foot .brand-line b { color: #fff; font-size: 18px; letter-spacing: .06em; }
.foot .disc {
  margin: 34px 0 14px;
  padding-top: 20px;
  border-top: 1px solid #26314C;
  color: #8C99B5;
  font-size: 13.5px;
  line-height: 1.8;
}
.foot .copy { color: #7A879F; font-size: 13px; }

/* ── 断点 ─────────────────────────────────────────────────────────── */
@media (max-width: 980px) {
  .hero-in { gap: 34px; padding: 48px 0 52px; }
  .hero-shot, .page-hero-fig { flex-basis: 232px; max-width: 232px; }
  .facts { grid-template-columns: repeat(2, 1fr); margin-top: -22px; }
  .grid3 { grid-template-columns: repeat(2, 1fr); }
  .gal { grid-template-columns: repeat(3, 1fr); }
  .band { gap: 28px; }
  .band-fig { flex-basis: 180px; max-width: 180px; }
  .cta { padding: 38px 26px; }
}

@media (max-width: 620px) {
  body { font-size: 15.5px; }
  .wrap { width: calc(100% - 32px); }
  .head-in { min-height: 60px; gap: 10px; }
  .brand img { width: 32px; height: 32px; }
  .brand b { font-size: 18px; }
  .burger { display: block; }
  .nav {
    display: none;
    order: 3;
    width: 100%;
    margin: 0 0 12px;
    flex-wrap: wrap;
    gap: 2px;
  }
  .nav.open { display: flex; }
  .nav a { padding: 8px 5px; font-size: 12.5px; flex: 0 0 auto; }
  .head .btn { margin-left: 0; padding: 8px 12px; font-size: 13px; }
  .head-in { flex-wrap: wrap; }
  .hero-in { display: block; padding: 38px 0 44px; }
  .hero h1 { font-size: 27px; }
  .hero-lead { font-size: 15.5px; }
  .hero-shot { max-width: 208px; margin: 30px auto 0; }
  .facts { grid-template-columns: repeat(2, 1fr); gap: 10px; margin-top: -18px; }
  .facts div { padding: 12px 13px; }
  .facts dd { font-size: 15px; }
  .sec { padding-top: 56px; }
  .grid3, .grid2 { grid-template-columns: 1fr; gap: 14px; }
  .gal { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .band, .band.flip { display: block; }
  .band-fig { max-width: 168px; margin: 0 auto 18px; }
  .page-hero { padding: 36px 0 38px; }
  .page-hero-in { display: block; }
  .page-hero-fig { max-width: 140px; margin: 24px 0 0; }
  .prose h2 { margin-top: 36px; font-size: 20.5px; }
  .steps li { padding: 16px 18px 16px 58px; }
  .steps li::before { left: 16px; }
  .faq .a { margin-left: 0; }
  .cta { padding: 32px 20px; margin-top: 56px; }
  .foot { margin-top: 62px; }
}