/* ============================================================
   mudanAi聊天 · 暗夜牡丹主题
   深墨紫黑 + 胭脂红 + 香槟金 / 宋体大标题 + 杂志式编号
   ============================================================ */

:root {
  --bg: #0a0709;
  --bg-2: #110b0f;
  --panel: #171017;
  --panel-2: #1d141b;
  --line: rgba(255, 214, 226, 0.12);
  --line-strong: rgba(255, 214, 226, 0.24);
  --text: #f3e8ed;
  --dim: #a68c98;
  --dim-2: #7d6672;
  --rose: #ff4f7d;
  --rose-soft: #ff8ba6;
  --rose-deep: #b81f4a;
  --gold: #e7c9a4;
  --gold-dim: #b79a78;
  --radius: 16px;
  --radius-lg: 24px;
  --shadow: 0 30px 80px rgba(0, 0, 0, 0.55);
  --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
}

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

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.85;
  overflow-x: hidden;
  /* 底部下载条留白 */
  padding-bottom: 0;
}

body.modal-open { overflow: hidden; }

img { max-width: 100%; height: auto; display: block; }

/* 网格/弹性子项允许收缩，避免带 width 属性的图片把整列撑宽 */
.hero-inner > *, .grid-3 > *, .grid-2 > *, .char-grid > *, .card-grid > *,
.shots > *, .quotes > *, .steps > *, .feature-row > *, .intro-grid > *,
.dl-box > *, .foot-top > * { min-width: 0; }

a { color: inherit; text-decoration: none; }

button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

::selection { background: var(--rose); color: #fff; }

/* 背景氛围：胭脂光晕 + 细网格 + 颗粒 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(60% 45% at 78% 0%, rgba(184, 31, 74, 0.35), transparent 70%),
    radial-gradient(45% 40% at 8% 18%, rgba(118, 24, 58, 0.28), transparent 72%),
    linear-gradient(180deg, #0d080c 0%, #0a0709 55%, #080507 100%);
  pointer-events: none;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  opacity: 0.5;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.022) 1px, transparent 1px);
  background-size: 88px 88px;
  mask-image: radial-gradient(ellipse at 50% 0%, #000 10%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 0%, #000 10%, transparent 78%);
  pointer-events: none;
}

.container {
  width: min(1160px, calc(100% - 48px));
  margin: 0 auto;
}

/* ---------------- 通用文字 ---------------- */
.serif { font-family: var(--serif); font-weight: 700; letter-spacing: 0.01em; }

.sec { padding: 104px 0; position: relative; }
.sec--tight { padding: 72px 0; }
.sec--line { border-top: 1px solid var(--line); }

.sec-head { max-width: 720px; margin-bottom: 52px; }

.sec-tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  letter-spacing: 0.28em;
  color: var(--gold-dim);
  text-transform: uppercase;
  margin-bottom: 18px;
}
.sec-tag::before {
  content: "";
  width: 26px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-dim));
}

.sec-head h2 {
  font-family: var(--serif);
  font-size: clamp(28px, 3.6vw, 44px);
  line-height: 1.34;
  font-weight: 700;
  letter-spacing: 0.01em;
}
.sec-head h2 em { font-style: normal; color: var(--rose-soft); }

.sec-head p {
  margin-top: 16px;
  color: var(--dim);
  font-size: 16px;
  max-width: 620px;
}

.sec-more { margin-top: 40px; }
.sec-more a {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--gold);
  border-bottom: 1px solid rgba(231, 201, 164, 0.28);
  padding-bottom: 4px;
  transition: gap 0.25s ease, color 0.25s ease;
}
.sec-more a:hover { gap: 16px; color: #fff; }

/* ---------------- 导航 ---------------- */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 90;
  background: rgba(10, 7, 9, 0.72);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  border-bottom: 1px solid var(--line);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.logo .mark {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  box-shadow: 0 0 0 3px rgba(255, 79, 125, 0.08);
  flex-shrink: 0;
}
.logo .mark img { width: 100%; height: 100%; object-fit: cover; }

.logo .word {
  display: flex;
  flex-direction: column;
  line-height: 1.05;
}
.logo .word b {
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.logo .word b span { color: var(--rose-soft); }
.logo .word small {
  font-size: 9px;
  letter-spacing: 0.22em;
  color: var(--dim-2);
  margin-top: 4px;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
  font-size: 15px;
}

.nav-links a {
  padding: 4px 0;
  color: #d8c6cf;
  position: relative;
  transition: color 0.2s ease;
  white-space: nowrap;
}
.nav-links a:hover { color: #fff; }
.nav-links a.active { color: #fff; }
.nav-links a.active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -20px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--rose), transparent);
}

/* CTA 胶囊：必须写明 .nav-links a.nav-cta，避免被 .nav-links a 的 padding 压扁 */
.nav-links a.nav-cta {
  padding: 9px 22px;
  border-radius: 999px;
  background: linear-gradient(120deg, var(--rose-deep), var(--rose));
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  box-shadow: 0 8px 24px rgba(184, 31, 74, 0.38);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.nav-links a.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 30px rgba(255, 79, 125, 0.45);
}
.nav-links a.nav-cta::after { display: none; }

.hamburger {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  border: 1px solid var(--line);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.hamburger span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--text);
  transition: transform 0.25s ease, opacity 0.25s ease;
}
.hamburger[aria-expanded="true"] span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.hamburger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.hamburger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.mobile-menu {
  display: none;
  flex-direction: column;
  padding: 8px 24px 24px;
  border-top: 1px solid var(--line);
  background: rgba(12, 8, 11, 0.98);
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  padding: 14px 2px;
  border-bottom: 1px solid rgba(255, 214, 226, 0.07);
  font-size: 16px;
  color: #d8c6cf;
}
.mobile-menu a.active { color: var(--rose-soft); }
.mobile-menu a.cta {
  margin-top: 16px;
  text-align: center;
  border: 0;
  border-radius: 999px;
  background: linear-gradient(120deg, var(--rose-deep), var(--rose));
  color: #fff;
  font-weight: 600;
}

/* ---------------- 按钮 ---------------- */
.btn-row { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px 30px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: transform 0.2s ease, box-shadow 0.25s ease, background 0.25s ease;
}
.btn-primary {
  background: linear-gradient(120deg, #c2214b, var(--rose) 62%, #ff7a9c);
  color: #fff;
  box-shadow: 0 14px 40px rgba(194, 33, 75, 0.42);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 18px 48px rgba(255, 79, 125, 0.5); }
.btn-ghost {
  border: 1px solid var(--line-strong);
  color: var(--text);
  background: rgba(255, 255, 255, 0.02);
}
.btn-ghost:hover { border-color: rgba(231, 201, 164, 0.5); color: #fff; transform: translateY(-2px); }
.btn-gold {
  border: 1px solid rgba(231, 201, 164, 0.42);
  color: var(--gold);
  background: rgba(231, 201, 164, 0.06);
}
.btn-gold:hover { background: rgba(231, 201, 164, 0.14); transform: translateY(-2px); }

/* ---------------- 首屏 ---------------- */
.hero {
  position: relative;
  padding: 146px 0 104px;
  overflow: hidden;
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.02fr 0.98fr;
  gap: 40px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 7px 14px;
  border: 1px solid rgba(231, 201, 164, 0.3);
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gold);
  background: rgba(231, 201, 164, 0.05);
}
.hero-badge i {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--rose);
  box-shadow: 0 0 10px var(--rose);
  font-style: normal;
}

.hero h1 {
  margin-top: 26px;
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(36px, 4.9vw, 62px);
  line-height: 1.28;
  letter-spacing: 0.01em;
}
.hero h1 .brand {
  display: block;
  font-family: var(--sans);
  font-size: clamp(13px, 1.2vw, 15px);
  font-weight: 500;
  letter-spacing: 0.22em;
  color: var(--gold-dim);
  margin-bottom: 16px;
}
.hero h1 em {
  font-style: normal;
  position: relative;
  color: #fff;
  background: linear-gradient(100deg, #ffd9e2, var(--rose-soft) 40%, var(--rose));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero .lead {
  margin-top: 24px;
  font-size: 16.5px;
  color: #c9b4be;
  max-width: 520px;
}
.hero .lead strong { color: #fff; font-weight: 600; }

.hero-meta {
  display: flex;
  gap: 0;
  margin-top: 46px;
  border-top: 1px solid var(--line);
  padding-top: 26px;
}
.hero-meta .item { flex: 1; padding-right: 18px; }
.hero-meta .item + .item { padding-left: 22px; border-left: 1px solid var(--line); }
.hero-meta strong {
  display: block;
  font-family: var(--serif);
  font-size: clamp(20px, 2vw, 26px);
  color: #fff;
}
.hero-meta span { font-size: 12.5px; color: var(--dim-2); letter-spacing: 0.06em; }

/* 首屏牡丹线稿 */
.hero-flower {
  position: absolute;
  right: -120px;
  top: -60px;
  width: 620px;
  color: var(--rose);
  opacity: 0.16;
  pointer-events: none;
  z-index: 0;
}

/* 首屏视觉：两张立绘 + 一台手机 */
.hero-visual {
  position: relative;
  height: 588px;
}
.hv-glow {
  position: absolute;
  inset: 6% 0 10% 6%;
  background: radial-gradient(circle at 55% 40%, rgba(255, 79, 125, 0.3), transparent 62%);
  filter: blur(30px);
}
.hv-card {
  position: absolute;
  width: 214px;
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow);
}
.hv-card img { width: 100%; height: 100%; object-fit: cover; }
.hv-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(8, 5, 7, 0.85));
}
.hv-left {
  left: 0;
  top: 72px;
  height: 400px;
  transform: rotate(-4deg);
  opacity: 0.92;
}
.hv-right {
  right: 0;
  bottom: 24px;
  height: 380px;
  transform: rotate(4deg);
  opacity: 0.92;
}
.hv-phone {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 248px;
  border-radius: 30px;
  padding: 8px;
  background: linear-gradient(160deg, rgba(255, 214, 226, 0.2), rgba(255, 79, 125, 0.12));
  border: 1px solid rgba(255, 214, 226, 0.22);
  box-shadow: 0 40px 90px rgba(0, 0, 0, 0.7);
  z-index: 2;
}
.hv-phone img { border-radius: 24px; }

.hv-chip {
  position: absolute;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border-radius: 999px;
  background: rgba(20, 12, 17, 0.9);
  border: 1px solid rgba(255, 214, 226, 0.2);
  backdrop-filter: blur(12px);
  font-size: 12px;
  color: #f0dfe6;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.45);
}
.hv-chip b { color: var(--rose-soft); font-weight: 600; }
.hv-chip-1 { left: 26px; bottom: 78px; }
.hv-chip-2 { right: 32px; top: 64px; }

/* ---------------- 卡片通用 ---------------- */
.card {
  position: relative;
  padding: 30px 26px 32px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.045), rgba(255, 255, 255, 0.012));
  transition: border-color 0.3s ease, transform 0.3s ease, background 0.3s ease;
}
.card:hover {
  border-color: rgba(255, 79, 125, 0.38);
  transform: translateY(-4px);
  background: linear-gradient(160deg, rgba(255, 79, 125, 0.09), rgba(255, 255, 255, 0.015));
}
.card .num {
  font-family: var(--serif);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--gold-dim);
}
.card h3 {
  font-family: var(--serif);
  font-size: 21px;
  margin: 14px 0 10px;
  letter-spacing: 0.01em;
}
.card p { color: var(--dim); font-size: 14.6px; line-height: 1.8; }

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }

/* ---------------- 角色卡 ---------------- */
.card-shot img { width: 100%; aspect-ratio: 3 / 4.2; object-fit: cover; }

/* 自建角色卡入口（补齐 5 张卡的空位） */
.card-create {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: center;
  gap: 12px;
  border-radius: 14px;
  border: 1px dashed rgba(255, 214, 226, 0.26);
  background: linear-gradient(160deg, rgba(255, 79, 125, 0.07), rgba(255, 255, 255, 0.012));
  text-align: center;
  padding: 18px 16px;
  transition: border-color 0.3s ease, transform 0.3s ease, background 0.3s ease;
}
.card-create:hover {
  border-color: rgba(255, 79, 125, 0.55);
  transform: translateY(-6px);
  background: linear-gradient(160deg, rgba(255, 79, 125, 0.14), rgba(255, 255, 255, 0.02));
}
.cc-plus {
  font-family: var(--serif);
  font-size: 22px;
  line-height: 1;
  color: var(--rose-soft);
}
.card-create b { font-family: var(--serif); font-size: 16px; }
.card-create p { font-size: 12.5px; color: var(--dim-2); line-height: 1.6; }

/* ---------------- 简介双栏 ---------------- */
.intro-grid {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 64px;
  align-items: center;
}
.intro-grid h2 {
  font-size: clamp(26px, 3.4vw, 38px);
  line-height: 1.42;
  margin-bottom: 22px;
}
.intro-grid p { color: var(--dim); font-size: 15.5px; margin-bottom: 14px; }

.intro-quote {
  position: relative;
  padding: 30px 0 30px 30px;
  border-left: 1px solid rgba(255, 79, 125, 0.45);
  font-family: var(--serif);
  font-size: clamp(19px, 2.1vw, 24px);
  line-height: 1.9;
  color: #ecdbe2;
}
.intro-quote > span {
  position: absolute;
  left: 14px;
  top: -8px;
  font-family: var(--serif);
  font-size: 54px;
  color: rgba(255, 79, 125, 0.28);
  line-height: 1;
}
.intro-quote cite {
  display: block;
  margin-top: 16px;
  font-family: var(--sans);
  font-style: normal;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--dim-2);
}

/* ---------------- 功能长页 ---------------- */
.feature-row {
  display: grid;
  grid-template-columns: 1fr 0.72fr;
  gap: 64px;
  align-items: center;
  padding: 56px 0;
  border-bottom: 1px solid var(--line);
}
.feature-row:first-child { padding-top: 0; }
.feature-row:last-child { border-bottom: 0; padding-bottom: 0; }
.feature-row:nth-child(even) .fr-shot { order: -1; }

.fr-num {
  font-family: var(--serif);
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--rose-soft);
}
.fr-text h2 { font-size: clamp(23px, 2.8vw, 32px); margin: 12px 0 18px; line-height: 1.42; }
.fr-text p { color: var(--dim); font-size: 15.2px; margin-bottom: 12px; }

.fr-list { list-style: none; margin-top: 18px; display: grid; gap: 8px; }
.fr-list li {
  position: relative;
  padding-left: 20px;
  font-size: 14.2px;
  color: #cdb9c3;
}
.fr-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 10px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: rgba(255, 79, 125, 0.7);
}
.fr-link { margin-top: 20px; }
.fr-link a { font-size: 13.5px; color: var(--gold); border-bottom: 1px solid rgba(231, 201, 164, 0.3); padding-bottom: 3px; }

.fr-shot {
  border-radius: 20px;
  padding: 7px;
  background: linear-gradient(170deg, rgba(255, 214, 226, 0.16), rgba(255, 79, 125, 0.05));
  border: 1px solid var(--line);
  max-width: 330px;
  justify-self: center;
}
.fr-shot img { border-radius: 15px; }

/* ---------------- 表单示意卡 ---------------- */
.form-card {
  padding: 26px 24px;
  border-radius: var(--radius);
  border: 1px solid var(--line-strong);
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.015));
}
.fc-row {
  display: flex;
  gap: 16px;
  align-items: baseline;
  padding: 11px 0;
  border-bottom: 1px dashed rgba(255, 214, 226, 0.12);
  font-size: 13.6px;
}
.fc-row span { width: 90px; flex-shrink: 0; color: var(--dim-2); }
.fc-row b { font-weight: 500; color: #f2e5eb; }
.fc-note { margin-top: 16px; font-size: 11.5px; color: var(--dim-2); }

/* ---------------- 参数表 ---------------- */
.spec-table { border-top: 1px solid var(--line); }
.st-row {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 24px;
  padding: 16px 4px;
  border-bottom: 1px solid var(--line);
  font-size: 14.5px;
}
.st-row span { color: var(--dim-2); }
.st-row b { font-weight: 500; color: #efe0e6; }

/* 四步 2x2 */
.steps.steps--grid2 { grid-template-columns: repeat(2, 1fr); }
.steps.steps--grid2 .step { padding-left: 0; border-left: 0; }
.steps.steps--grid2 .step:nth-child(even) { padding-left: 30px; border-left: 1px solid var(--line); }
.steps.steps--grid2 .step:nth-child(n + 3) { border-top: 1px solid var(--line); }

/* 单列步骤（第 4 步单独一行） */
.steps--single { grid-template-columns: 1fr; border-top: 0; }
.steps--single .step { border-left: 0; padding-left: 0; padding-top: 24px; }
.step--first { border-top: 0 !important; }

/* ---------------- 角色卡 ---------------- */
.char-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}
.char-card {
  position: relative;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--panel);
  transition: transform 0.35s ease, border-color 0.35s ease;
}
.char-card:hover { transform: translateY(-6px); border-color: rgba(255, 79, 125, 0.4); }
.char-card img { width: 100%; aspect-ratio: 3 / 4.2; object-fit: cover; }
.char-card .cap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 40px 16px 16px;
  background: linear-gradient(180deg, transparent, rgba(8, 5, 7, 0.92) 62%);
}
.char-card .cap b {
  display: block;
  font-family: var(--serif);
  font-size: 18px;
  letter-spacing: 0.04em;
}
.char-card .cap span {
  display: block;
  font-size: 11.5px;
  color: var(--rose-soft);
  letter-spacing: 0.1em;
  margin-top: 3px;
}
.char-card .cap p {
  font-size: 12.5px;
  color: #c2acb6;
  margin-top: 8px;
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 角色卡（官方卡，图内已带名字与台词） */
.card-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }
.card-shot {
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--line);
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}
.card-shot:hover { transform: translateY(-6px) rotate(-0.6deg); box-shadow: 0 24px 50px rgba(0, 0, 0, 0.5); }

.char-note { margin-top: 22px; font-size: 12.5px; color: var(--dim-2); }

/* ---------------- 截图区 ---------------- */
.shots {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  max-width: 1080px;
  margin: 0 auto;
}
.shot {
  position: relative;
  display: flex;
  flex-direction: column;
  border-radius: 20px;
  padding: 6px;
  background: linear-gradient(170deg, rgba(255, 214, 226, 0.16), rgba(255, 79, 125, 0.06));
  border: 1px solid var(--line);
}
.shot img {
  border-radius: 15px;
  width: 100%;
  aspect-ratio: 620 / 1340;
  object-fit: cover;
  object-position: center top;
}
.shot figcaption {
  padding: 12px 4px 6px;
  margin-top: auto;
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--dim);
  text-align: center;
  overflow-wrap: anywhere;
}
.shot figcaption b { color: #fff; font-weight: 600; margin-right: 6px; }

/* ---------------- 三步 ---------------- */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 1px solid var(--line); }
.step {
  padding: 34px 30px 34px 0;
  position: relative;
}
.step + .step { padding-left: 30px; border-left: 1px solid var(--line); }
.step .n {
  font-family: var(--serif);
  font-size: 44px;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(255, 79, 125, 0.55);
  letter-spacing: 0.02em;
}
.step h3 { font-family: var(--serif); font-size: 20px; margin: 16px 0 8px; }
.step p { color: var(--dim); font-size: 14.5px; }

/* ---------------- 引言/评价 ---------------- */
.quotes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.quote {
  padding: 28px 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.022);
}
.quote p { font-size: 14.8px; color: #ddcbd3; line-height: 1.9; }
.quote footer {
  margin-top: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12.5px;
  color: var(--dim-2);
}
.quote .av {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: linear-gradient(140deg, rgba(255, 79, 125, 0.3), rgba(231, 201, 164, 0.16));
  color: #fff;
  font-family: var(--serif);
  font-size: 13px;
}

/* ---------------- 下载区 ---------------- */
.dl-box {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 40px;
  align-items: center;
  padding: 48px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line-strong);
  background:
    radial-gradient(80% 120% at 100% 0%, rgba(184, 31, 74, 0.28), transparent 60%),
    linear-gradient(160deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.01));
  position: relative;
  overflow: hidden;
}
.dl-box h2 {
  font-family: var(--serif);
  font-size: clamp(26px, 3.2vw, 38px);
  line-height: 1.35;
}
.dl-box > div > p { color: var(--dim); margin-top: 14px; font-size: 15px; }
.dl-list { list-style: none; margin: 24px 0 28px; display: grid; gap: 9px; }
.dl-list li {
  position: relative;
  padding-left: 24px;
  font-size: 14.5px;
  color: #d3c0c9;
}
.dl-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 11px;
  height: 6px;
  border-left: 1.5px solid var(--rose-soft);
  border-bottom: 1.5px solid var(--rose-soft);
  transform: rotate(-45deg);
}
.dl-side { text-align: center; }
.qr-wrap {
  width: 168px;
  height: 168px;
  margin: 0 auto 14px;
  padding: 10px;
  background: #fff;
  border-radius: 14px;
  display: grid;
  place-items: center;
}
.qr-wrap img, .qr-wrap canvas { width: 100% !important; height: 100% !important; }
.qr-wrap.is-empty {
  background: rgba(255, 255, 255, 0.05);
  border: 1px dashed rgba(255, 214, 226, 0.3);
}
.qr-wrap.is-empty::after {
  content: "地址待配置";
  font-size: 12px;
  color: var(--dim-2);
  letter-spacing: 0.08em;
}
.dl-side small { display: block; font-size: 12px; color: var(--dim-2); letter-spacing: 0.1em; }
.dl-ver {
  display: inline-flex;
  gap: 14px;
  margin-top: 12px;
  font-size: 11.5px;
  color: var(--dim-2);
  letter-spacing: 0.06em;
}

/* ---------------- 底部 CTA 条 ---------------- */
.cta-band {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  padding: 36px 42px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(70% 140% at 100% 0%, rgba(184, 31, 74, 0.3), transparent 62%),
    linear-gradient(160deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.012));
}
.cta-band h2 { font-size: clamp(22px, 2.6vw, 30px); }
.cta-band p { color: var(--dim); font-size: 14.5px; margin-top: 8px; max-width: 560px; }
.cta-band .btn { flex-shrink: 0; }

/* ---------------- FAQ ---------------- */
.faq-list { border-top: 1px solid var(--line); }
.faq-list details {
  border-bottom: 1px solid var(--line);
  padding: 4px 0;
}
.faq-list summary {
  list-style: none;
  cursor: pointer;
  padding: 22px 40px 22px 0;
  font-size: 16.5px;
  font-family: var(--serif);
  position: relative;
  color: #f8eef2;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after {
  content: "+";
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 22px;
  color: var(--rose-soft);
  font-family: var(--sans);
  transition: transform 0.25s ease;
}
.faq-list details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq-list .ans { padding: 0 60px 24px 0; color: var(--dim); font-size: 15px; }
.faq-list .ans a { color: var(--gold); border-bottom: 1px solid rgba(231, 201, 164, 0.3); }

/* ---------------- 页脚 ---------------- */
body > footer {
  position: relative;
  overflow: hidden;
  border-top: 1px solid var(--line);
  padding: 64px 0 40px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.012), transparent);
}
body > footer .container { position: relative; z-index: 1; }
.foot-mark {
  position: absolute;
  right: -10px;
  top: -70px;
  font-family: var(--serif);
  font-size: 200px;
  line-height: 1;
  letter-spacing: 0.06em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(255, 79, 125, 0.1);
  pointer-events: none;
  user-select: none;
}
.foot-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 214, 226, 0.07);
}
.foot-brand p {
  color: var(--dim-2);
  font-size: 13.5px;
  margin-top: 16px;
  max-width: 320px;
}
.foot-col h4 {
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--gold-dim);
  font-weight: 500;
  margin-bottom: 16px;
}
.foot-col a {
  display: block;
  font-size: 14px;
  color: #c9b4be;
  padding: 5px 0;
}
.foot-col a:hover { color: var(--rose-soft); }

.foot-seo {
  padding: 30px 0 0;
  font-size: 12.5px;
  color: var(--dim-2);
  line-height: 1.9;
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
}

/* 友情链接（仅首页） */
.friend-links {
  margin: 26px auto 0;
  padding-top: 22px;
  border-top: 1px dashed rgba(255, 214, 226, 0.14);
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: center;
  gap: 10px 18px;
  max-width: 900px;
  font-size: 12.5px;
}
.fl-label { color: var(--gold-dim); letter-spacing: 0.18em; font-size: 11px; }
.fl-list { display: flex; flex-wrap: wrap; gap: 8px 18px; justify-content: center; }
.fl-list a { color: #9c8590; }
.fl-list a:hover { color: var(--rose-soft); }
.fl-list a.pending {
  color: #6d5a63;
  border-bottom: 1px dashed rgba(109, 90, 99, 0.7);
}
.fl-list a.pending:hover { color: #6d5a63; }

.copyright {
  margin-top: 26px;
  text-align: center;
  font-size: 11.5px;
  color: #5e4c55;
  letter-spacing: 0.06em;
}

/* ---------------- 子页头 ---------------- */
.page-head {
  padding: 132px 0 56px;
  border-bottom: 1px solid var(--line);
  position: relative;
}
.page-head .crumb {
  font-size: 12px;
  color: var(--dim-2);
  letter-spacing: 0.12em;
  margin-bottom: 20px;
}
.page-head .crumb a:hover { color: var(--rose-soft); }
.page-head h1 {
  font-family: var(--serif);
  font-size: clamp(30px, 4.2vw, 50px);
  line-height: 1.3;
}
.page-head p { color: var(--dim); margin-top: 18px; max-width: 660px; font-size: 15.5px; }

/* ---------------- 内容排版（文章） ---------------- */
.prose { max-width: 760px; margin: 0 auto; }
.prose h2 {
  font-family: var(--serif);
  font-size: clamp(22px, 2.6vw, 28px);
  margin: 52px 0 16px;
  padding-left: 16px;
  border-left: 2px solid var(--rose);
}
.prose h3 {
  font-family: var(--serif);
  font-size: 19px;
  margin: 32px 0 10px;
  color: #f6ebef;
}
.prose p { color: #cbb8c1; margin-bottom: 18px; font-size: 15.8px; }
.prose ul, .prose ol { margin: 0 0 20px 20px; color: #cbb8c1; font-size: 15.5px; }
.prose li { margin-bottom: 8px; }
.prose strong { color: #fff; }
.prose a { color: var(--gold); border-bottom: 1px solid rgba(231, 201, 164, 0.3); }
.prose .tip {
  margin: 26px 0;
  padding: 20px 22px;
  border-radius: 12px;
  border: 1px solid rgba(231, 201, 164, 0.24);
  background: rgba(231, 201, 164, 0.05);
  color: #ddc9cf;
  font-size: 14.5px;
}
.prose .tip b { color: var(--gold); }
.article-meta {
  display: flex;
  gap: 16px;
  font-size: 12.5px;
  color: var(--dim-2);
  margin-bottom: 36px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--line);
}
.prose img { border-radius: 14px; margin: 26px auto; border: 1px solid var(--line); }
.prose figure figcaption { font-size: 12.5px; color: var(--dim-2); text-align: center; margin-top: -12px; }

/* 相关文章 */
.rel { margin-top: 60px; padding-top: 30px; border-top: 1px solid var(--line); }
.rel h4 { font-size: 12px; letter-spacing: 0.2em; color: var(--gold-dim); margin-bottom: 16px; }
.rel a { display: block; padding: 12px 0; border-bottom: 1px solid rgba(255, 214, 226, 0.06); font-size: 15px; }
.rel a:hover { color: var(--rose-soft); }

/* ---------------- 文章列表 ---------------- */
.post-list { display: grid; gap: 0; border-top: 1px solid var(--line); }
.post {
  display: grid;
  grid-template-columns: 120px 1fr auto;
  gap: 26px;
  align-items: baseline;
  padding: 28px 6px;
  border-bottom: 1px solid var(--line);
  transition: background 0.25s ease, padding-left 0.25s ease;
}
.post:hover { background: rgba(255, 79, 125, 0.04); padding-left: 16px; }
.post time { font-size: 12.5px; color: var(--dim-2); letter-spacing: 0.06em; }
.post h3 { font-family: var(--serif); font-size: 20px; font-weight: 700; }
.post p { color: var(--dim); font-size: 14px; margin-top: 8px; }
.post .go { color: var(--rose-soft); font-size: 13px; white-space: nowrap; }

/* ---------------- 提示 / 弹层 / 返回顶部 / 底部下载条 ---------------- */
#toast {
  position: fixed;
  left: 50%;
  bottom: 110px;
  transform: translate(-50%, 16px);
  z-index: 200;
  padding: 12px 20px;
  border-radius: 999px;
  background: rgba(24, 14, 20, 0.96);
  border: 1px solid var(--line-strong);
  font-size: 13.5px;
  color: #f3e8ed;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease;
  white-space: nowrap;
}
#toast.show { opacity: 1; transform: translate(-50%, 0); }

.dl-modal {
  position: fixed;
  inset: 0;
  z-index: 220;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.dl-modal.open { display: flex; }
.dl-modal__mask {
  position: absolute;
  inset: 0;
  background: rgba(5, 3, 5, 0.78);
  backdrop-filter: blur(6px);
}
.dl-modal__body {
  position: relative;
  width: min(560px, 100%);
  padding: 38px 32px 30px;
  border-radius: 20px;
  border: 1px solid var(--line-strong);
  background: linear-gradient(160deg, #1a1118, #120b10);
  box-shadow: var(--shadow);
  text-align: center;
}
.dl-modal__title { font-family: var(--serif); font-size: 22px; }
.dl-modal__hint { color: var(--dim); font-size: 13px; margin-top: 8px; }
.dl-modal__qr {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
  margin: 28px 0 10px;
}
.dl-qr-item span { display: block; font-size: 12.5px; color: var(--dim); margin-top: 10px; letter-spacing: 0.08em; }
.dl-modal__close {
  position: absolute;
  right: 14px;
  top: 14px;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--line);
  color: var(--dim);
  font-size: 18px;
  line-height: 1;
}
.dl-modal__close:hover { color: #fff; border-color: var(--line-strong); }
.dl-modal__direct { margin-top: 16px; font-size: 13px; color: var(--gold); }

#backTop {
  position: fixed;
  right: 24px;
  bottom: 32px;
  z-index: 80;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  background: rgba(20, 12, 17, 0.86);
  backdrop-filter: blur(10px);
  color: var(--gold);
  display: grid;
  place-items: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease;
}
#backTop.show { opacity: 1; pointer-events: auto; }
#backTop:hover { transform: translateY(-3px); }

.mobile-bar { display: none; }

/* ---------------- 动效 ---------------- */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------------- 响应式 ---------------- */
@media (max-width: 1024px) {
  .nav-links { gap: 18px; font-size: 14px; }
  .hero-visual { height: 560px; }
  .hv-card { width: 186px; }
  .card-grid { grid-template-columns: repeat(3, 1fr); }
  .char-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 900px) {

  body { padding-bottom: calc(72px + env(safe-area-inset-bottom)); }

  .container { width: calc(100% - 36px); }
  .nav { height: 64px; }
  .nav-links { display: none; }
  .hamburger { display: flex; }

  .hero { padding: 112px 0 64px; }
  .hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .hero .lead { margin-top: 20px; }
  .hero h1 { font-size: clamp(32px, 8.6vw, 46px); }
  .btn-row { margin-top: 28px; }
  .btn { padding: 14px 24px; font-size: 14.5px; }
  .hero-meta { margin-top: 34px; padding-top: 22px; }
  .hero-meta .item { padding-right: 10px; }
  .hero-meta .item + .item { padding-left: 14px; }
  .hero-meta strong { font-size: 18px; }
  .hero-meta span { font-size: 11.5px; }

  .hero-visual { height: auto; padding: 10px 0 0; display: flex; justify-content: center; }
  .hv-card { display: none; }
  .hero-flower { width: 380px; right: -150px; top: -30px; opacity: 0.12; }
  .foot-mark { font-size: 120px; top: -30px; right: -16px; }
  .hv-phone {
    position: relative;
    left: auto;
    top: auto;
    transform: none;
    width: min(268px, 78%);
  }
  .hv-chip { display: none; }

  .sec { padding: 68px 0; }
  .sec--tight { padding: 52px 0; }
  .sec-head { margin-bottom: 34px; }
  .sec-head h2 { font-size: clamp(25px, 6.4vw, 32px); }

  .intro-grid { grid-template-columns: 1fr; gap: 30px; }
  .intro-quote { padding: 22px 0 22px 22px; }

  .feature-row { grid-template-columns: 1fr; gap: 24px; padding: 36px 0; }
  .feature-row:nth-child(even) .fr-shot { order: 0; }
  .fr-shot { max-width: 300px; width: 100%; }
  .fr-text h2 { margin: 10px 0 14px; }

  .st-row { grid-template-columns: 1fr; gap: 2px; padding: 14px 2px; }
  .st-row span { font-size: 12px; letter-spacing: 0.08em; }

  .form-card { padding: 20px 18px; }
  .fc-row span { width: 76px; }

  .grid-3 { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .grid-2 { grid-template-columns: 1fr; }
  .card { padding: 22px 18px 24px; }
  .card h3 { font-size: 18px; }
  .card p { font-size: 13.6px; }

  .char-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .char-card .cap { padding: 32px 12px 12px; }
  .char-card .cap b { font-size: 16px; }
  .char-card .cap p { font-size: 12px; }

  .card-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }

  .shots { grid-template-columns: repeat(2, 1fr); gap: 14px; max-width: 640px; }
  .shot { padding: 5px; border-radius: 16px; }
  .shot img { border-radius: 12px; }

  .steps { grid-template-columns: 1fr; border-top: 0; }
  .step { padding: 24px 0; border-top: 1px solid var(--line); }
  .step + .step { padding-left: 0; border-left: 0; }
  .step .n { font-size: 34px; }

  .quotes { grid-template-columns: 1fr; gap: 12px; }

  .cta-band { flex-direction: column; align-items: flex-start; gap: 20px; padding: 26px 22px; }
  .cta-band .btn { width: 100%; }

  .dl-box { grid-template-columns: 1fr; padding: 30px 22px; gap: 28px; }
  .dl-side { display: none; }

  .foot-top { grid-template-columns: 1fr 1fr; gap: 28px; }
  .foot-brand { grid-column: 1 / -1; }

  .page-head { padding: 106px 0 40px; }

  .post { grid-template-columns: 1fr; gap: 6px; padding: 22px 4px; }
  .post .go { display: none; }

  .mobile-bar {
    display: flex;
    align-items: center;
    gap: 12px;
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 85;
    padding: 12px 18px calc(12px + env(safe-area-inset-bottom));
    background: rgba(12, 8, 11, 0.86);
    backdrop-filter: blur(16px) saturate(140%);
    border-top: 1px solid var(--line);
  }
  .mobile-bar .mb-info { flex: 1; line-height: 1.3; }
  .mobile-bar .mb-info b { display: block; font-size: 13.5px; }
  .mobile-bar .mb-info span { font-size: 11px; color: var(--dim-2); }
  .mobile-bar .mb-btn {
    padding: 11px 22px;
    border-radius: 999px;
    background: linear-gradient(120deg, #c2214b, var(--rose));
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    white-space: nowrap;
  }

  #backTop { bottom: calc(88px + env(safe-area-inset-bottom)); right: 14px; width: 40px; height: 40px; }
  #toast { bottom: calc(96px + env(safe-area-inset-bottom)); }
  .dl-modal__body { padding: 30px 18px 24px; }
  .dl-modal__qr { gap: 14px; }
}

@media (max-width: 640px) {
  .grid-3 { grid-template-columns: 1fr; }

  .shots { grid-template-columns: repeat(2, 1fr); gap: 12px; max-width: 100%; }
  .shot figcaption { font-size: 11.5px; padding: 9px 2px 4px; }
  .shot figcaption b { display: block; margin: 0 0 2px; }

  .logo .word small { display: none; }
  .hero-meta .item span { font-size: 11px; }
  .section-note { font-size: 12px; }
}

@media (max-width: 360px) {
  .char-grid, .card-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 30px; }
}