/* ============================================================
   定制易支付 —— 首页模板
   设计语言取自 YUFA 模板（/storage/emulated/0/模板/html）

   关键 token：
   - 主色 #08bce9（青）   强调色 #113f8a（深蓝）
   - 渐变 linear-gradient(45deg, #113f8a, #08bce9)
   - 标题 Montserrat 700/800 + letter-spacing 2px
   - 圆角 4px / 8px / 胶囊 80px
   - 阴影 0 7px 10px -5px rgba(0,0,0,.25)
   - 过渡 all .5s ease-in-out
   - 深色：纯黑底 + 白字

   字体：Montserrat / Nunito 走系统回退（不引 Google Fonts，
   大陆访问不稳定；本地无该字体时回退到苹方/雅黑，观感接近）
   ============================================================ */

/* ---------- 浅色 ---------- */
:root {
  --p-bg:         #ffffff;
  --p-bg-alt:     #f1f1f1;
  --p-surface:    #ffffff;
  --p-surface-2:  #f8f9fa;

  --p-text:       #333333;
  --p-text-2:     #575757;
  --p-text-3:     #707070;
  --p-text-inv:   #ffffff;

  --p-brand:      #08bce9;
  --p-brand-2:    #06a3c9;
  --p-accent:     #113f8a;
  --p-brand-soft: #e6f8fd;

  --p-border:     #e3e3e3;
  --p-border-2:   #d0d0d0;

  --p-ok:         #217234;

  --p-gradient:   linear-gradient(45deg, #113f8a, #08bce9);
  --p-shadow:     0 1px 10px 0 rgba(0, 0, 0, .08);
  --p-shadow-lg:  0 7px 10px -5px rgba(0, 0, 0, .25);
  --p-shadow-xl:  0 0 30px 0 rgba(51, 51, 51, .25);

  --p-font:       "Nunito", -apple-system, BlinkMacSystemFont, "Segoe UI",
                  "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --p-font-head:  "Montserrat", "Nunito", -apple-system, BlinkMacSystemFont,
                  "PingFang SC", "Microsoft YaHei", sans-serif;

  --p-r-sm:       4px;
  --p-r:          8px;
  --p-r-lg:       16px;
  --p-r-pill:     80px;

  --p-ease:       ease-in-out;
  --p-dur:        .5s;
}

/* ---------- 深色（YUFA: 纯黑底 + 白字） ---------- */
[data-theme="dark"] {
  --p-bg:         #000000;
  --p-bg-alt:     #1a1a1a;
  --p-surface:    #1a1a1a;
  --p-surface-2:  #222222;

  --p-text:       #ffffff;
  --p-text-2:     #d4d4d4;
  --p-text-3:     #707070;
  --p-text-inv:   #000000;

  --p-brand:      #08bce9;
  --p-brand-2:    #35cdf2;
  --p-accent:     #4a7fd4;
  --p-brand-soft: #0a2a33;

  --p-border:     #2e2e2e;
  --p-border-2:   #404040;

  --p-ok:         #4caf50;

  --p-gradient:   linear-gradient(45deg, #08bce9, #113f8a);
  --p-shadow:     0 1px 10px 0 rgba(0, 0, 0, .5);
  --p-shadow-lg:  0 7px 10px -5px rgba(0, 0, 0, .6);
  --p-shadow-xl:  0 0 30px 0 rgba(0, 0, 0, .7);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --p-bg:         #000000;
    --p-bg-alt:     #1a1a1a;
    --p-surface:    #1a1a1a;
    --p-surface-2:  #222222;
    --p-text:       #ffffff;
    --p-text-2:     #d4d4d4;
    --p-text-3:     #707070;
    --p-text-inv:   #000000;
    --p-brand:      #08bce9;
    --p-brand-2:    #35cdf2;
    --p-accent:     #4a7fd4;
    --p-brand-soft: #0a2a33;
    --p-border:     #2e2e2e;
    --p-border-2:   #404040;
    --p-ok:         #4caf50;
    --p-gradient:   linear-gradient(45deg, #08bce9, #113f8a);
    --p-shadow:     0 1px 10px 0 rgba(0, 0, 0, .5);
    --p-shadow-lg:  0 7px 10px -5px rgba(0, 0, 0, .6);
    --p-shadow-xl:  0 0 30px 0 rgba(0, 0, 0, .7);
  }
}

/* ---------- 基础 ---------- */
*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  background-color: var(--p-bg);
  color: var(--p-text);
  font-family: var(--p-font);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 {
  margin: 0;
  color: var(--p-text);
  font-family: var(--p-font-head);
  font-weight: 800;
  letter-spacing: 2px;
  line-height: 1.15;
}
h1 { font-size: 52px; }
h2 { font-size: 38px; }
h3 { font-size: 20px; letter-spacing: 1px; }
h4 { font-size: 15px; letter-spacing: 1px; }

p { margin: 0; color: var(--p-text-2); }

a {
  color: var(--p-brand);
  text-decoration: none;
  transition: color var(--p-dur) var(--p-ease);
}
a:hover { color: var(--p-brand-2); }

img { max-width: 100%; border: 0; }
svg { display: block; }

/* ---------- 布局 ---------- */
.wrap {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 导航是 fixed，非首页（文档页等）没有 hero 顶开，
   用 main 统一补出导航高度 */
main { display: block; }
.page-offset { padding-top: 75px; }

/* YUFA 的渐变短线（line-gradient-color） */
.line-gradient {
  display: block;
  width: 75px;
  height: 4px;
  border-radius: 0 6px;
  background: var(--p-brand);
  margin: 1rem 0;
}

/* ---------- 导航（YUFA: 主色底 + 固定定位） ---------- */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1030;
  background: var(--p-brand);
  box-shadow: var(--p-shadow);
  transition: all var(--p-dur) var(--p-ease);
}
.site-nav .wrap {
  height: 75px;
  max-width: 1320px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--p-font-head);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: .5px;
  color: #fff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.brand:hover { color: #fff; }
.brand svg { flex: 0 0 24px; color: #fff; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
  margin-left: auto;
}
.nav-links a {
  display: block;
  padding: 9px 16px;
  font-size: 15px;
  font-weight: 700;
  color: rgba(255, 255, 255, .85);
  border-radius: var(--p-r-sm);
  transition: all var(--p-dur) var(--p-ease);
}
.nav-links a:hover {
  color: #fff;
  background-color: rgba(255, 255, 255, .15);
}
.nav-links a.is-active {
  color: #fff;
  background-color: rgba(255, 255, 255, .22);
}

/* 导航里的主题切换按钮 */
.site-nav .wrap > #t-theme-toggle {
  position: static;
  right: auto;
  bottom: auto;
  flex: 0 0 40px;
  width: 40px;
  height: 40px;
  border: 2px solid rgba(255, 255, 255, .6);
  border-radius: 50%;
  background: transparent;
  color: #fff;
  box-shadow: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  transition: all var(--p-dur) var(--p-ease);
}
.site-nav .wrap > #t-theme-toggle:hover {
  background: rgba(255, 255, 255, .2);
  transform: rotate(15deg);
}

/* ---------- 按钮（YUFA ma-btn-primary） ---------- */
.btn {
  position: relative;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: auto;
  padding: 14px 48px;
  font-family: var(--p-font);
  font-size: 16px;
  font-weight: 700;
  text-align: center;
  border: 2px solid transparent;
  border-radius: var(--p-r-sm);
  cursor: pointer;
  white-space: nowrap;
  box-shadow: var(--p-shadow-lg);
  transition: all var(--p-dur) var(--p-ease);
  z-index: 0;
}
/* 光泽扫过 */
.btn::before,
.btn::after {
  content: "";
  position: absolute;
  width: 30px;
  left: 0;
  top: -50%;
  height: 200%;
  background-color: rgba(255, 255, 255, .7);
  transform: rotate(-15deg) translateX(-150%);
  z-index: -1;
  transition: all var(--p-dur) var(--p-ease);
  pointer-events: none;
}
.btn::after { transition-delay: .075s; }
.btn:hover::before,
.btn:hover::after {
  left: 100%;
  transform: rotate(-15deg) translateX(100%);
}

.btn-primary {
  background: var(--p-brand);
  border-color: var(--p-brand);
  color: #fff;
}
.btn-primary:hover {
  background: transparent;
  border-color: var(--p-brand);
  color: var(--p-brand);
}

.btn-secondary {
  background: transparent;
  border-color: var(--p-border-2);
  color: var(--p-text-2);
}
.btn-secondary:hover {
  background: var(--p-brand);
  border-color: var(--p-brand);
  color: #fff;
}

/* 圆角胶囊（YUFA body.rounded-btns） */
.btn-rounded { border-radius: var(--p-r-pill); }

/* ---------- Hero（YUFA page-hero: 45deg 渐变底） ---------- */
.hero {
  position: relative;
  padding: 160px 0 100px;
  background: var(--p-gradient);
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, .12) 1px, transparent 1px);
  background-size: 22px 22px;
  opacity: .5;
  pointer-events: none;
}
.hero .wrap { position: relative; z-index: 1; }

.hero-card {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 56px;
  align-items: center;
}
.hero h1 {
  margin-bottom: 20px;
  color: #fff;
  font-size: 52px;
  text-shadow: 0 2px 20px rgba(0, 0, 0, .15);
}
.hero .lede {
  margin-bottom: 34px;
  max-width: 560px;
  font-size: 17px;
  color: rgba(255, 255, 255, .92);
  font-weight: 600;
}
.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
/* Hero 里的按钮：主按钮反白，次按钮描边 */
.hero .btn-primary {
  background: #fff;
  border-color: #fff;
  color: var(--p-accent);
}
.hero .btn-primary:hover {
  background: transparent;
  color: #fff;
  border-color: #fff;
}
.hero .btn-secondary {
  background: transparent;
  border-color: rgba(255, 255, 255, .7);
  color: #fff;
}
.hero .btn-secondary:hover {
  background: #fff;
  border-color: #fff;
  color: var(--p-accent);
}

/* Hero 右侧清单 */
.hero-points {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 1px solid rgba(255, 255, 255, .3);
  padding-left: 36px;
}
.hero-points li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 13px 0;
  font-size: 15px;
  font-weight: 600;
  color: rgba(255, 255, 255, .95);
}
.hero-points li + li { border-top: 1px solid rgba(255, 255, 255, .18); }
.hero-points svg {
  flex: 0 0 18px;
  margin-top: 4px;
  color: #fff;
}

/* ---------- 区块 ---------- */
.section {
  padding: 80px 0;
}
.section-alt { background-color: var(--p-bg-alt); }

.section-head {
  text-align: center;
  margin-bottom: 48px;
}
.section-head h2 {
  margin-bottom: 8px;
  color: var(--p-text);
}
.section-head p {
  font-size: 16px;
  color: var(--p-text-3);
  font-weight: 600;
}
.section-head .line-gradient { margin: 16px auto 0; }

/* ---------- 特性卡（YUFA .demo: hover 上浮 10px + 阴影） ---------- */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.feature {
  padding: 36px 30px;
  background-color: var(--p-surface);
  border: 1px solid var(--p-border);
  border-radius: var(--p-r);
  box-shadow: var(--p-shadow);
  transition: all var(--p-dur) var(--p-ease);
}
.feature:hover {
  transform: translateY(-10px);
  box-shadow: var(--p-shadow-lg);
  border-color: var(--p-brand);
}
.feature .ico {
  width: 64px;
  height: 64px;
  margin-bottom: 22px;
  border-radius: 50%;
  background: var(--p-brand-soft);
  color: var(--p-brand);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--p-dur) var(--p-ease);
}
.feature:hover .ico {
  background: var(--p-gradient);
  color: #fff;
}
.feature h3 {
  margin-bottom: 10px;
  color: var(--p-text);
}
.feature p {
  font-size: 15px;
  line-height: 1.75;
  color: var(--p-text-3);
  font-weight: 600;
}

/* ---------- 接入流程（YUFA 编号圆点） ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  counter-reset: step;
}
.step {
  position: relative;
  padding: 36px 30px;
  background-color: var(--p-surface);
  border: 1px solid var(--p-border);
  border-radius: var(--p-r);
  box-shadow: var(--p-shadow);
  counter-increment: step;
  transition: all var(--p-dur) var(--p-ease);
}
.step:hover {
  transform: translateY(-10px);
  box-shadow: var(--p-shadow-lg);
  border-color: var(--p-brand);
}
.step::before {
  content: counter(step);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  margin-bottom: 20px;
  border-radius: 50%;
  background: var(--p-gradient);
  color: #fff;
  font-family: var(--p-font-head);
  font-size: 20px;
  font-weight: 800;
  box-shadow: var(--p-shadow-lg);
}
.step h3 {
  margin-bottom: 10px;
  color: var(--p-text);
}
.step p {
  font-size: 15px;
  line-height: 1.75;
  color: var(--p-text-3);
  font-weight: 600;
}

/* ---------- 渠道（YUFA 居中排列） ---------- */
.partners-card {
  padding: 48px 40px;
  background-color: var(--p-surface);
  border: 1px solid var(--p-border);
  border-radius: var(--p-r);
  box-shadow: var(--p-shadow);
  display: flex;
  align-items: center;
  gap: 64px;
  flex-wrap: wrap;
  justify-content: center;
}
.partners-card img {
  height: 32px;
  width: auto;
  opacity: .65;
  filter: grayscale(1);
  transition: all var(--p-dur) var(--p-ease);
}
.partners-card img:hover {
  opacity: 1;
  filter: grayscale(0);
  transform: translateY(-4px);
}

/* ---------- 页脚（YUFA index-page-footer） ---------- */
.site-foot {
  background-color: var(--p-bg-alt);
  border-top: 2px solid rgba(8, 188, 233, .5);
}
.foot-inner { padding: 64px 0 28px; }
.foot-cols {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 56px;
  margin-bottom: 40px;
}
.foot-col h4 {
  margin-bottom: 20px;
  color: var(--p-brand);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
}
.foot-col ul { list-style: none; margin: 0; padding: 0; }
.foot-col li { margin-bottom: 12px; }
.foot-col a {
  font-size: 15px;
  font-weight: 600;
  color: var(--p-text-2);
}
.foot-col a:hover { color: var(--p-brand); }
.foot-col p {
  font-size: 15px;
  color: var(--p-text-3);
  line-height: 1.8;
  font-weight: 600;
}

.foot-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--p-border);
  text-align: center;
  font-size: 14px;
  font-weight: 600;
  color: var(--p-text-3);
}

/* ---------- 主题切换按钮（页面右下角浮动，非导航内时） ---------- */
#t-theme-toggle {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 48px;
  height: 48px;
  border: 2px solid var(--p-brand);
  border-radius: 50%;
  background: var(--p-surface);
  color: var(--p-brand);
  box-shadow: var(--p-shadow-lg);
  cursor: pointer;
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  transition: all var(--p-dur) var(--p-ease);
  -webkit-tap-highlight-color: transparent;
}
#t-theme-toggle:hover {
  background: var(--p-brand);
  color: #fff;
  transform: translateY(-4px) rotate(15deg);
}

/* ---------- 返回顶部（YUFA back-to-top） ---------- */
.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 84px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: none;
  background: var(--p-brand);
  color: #fff;
  box-shadow: var(--p-shadow-lg);
  cursor: pointer;
  z-index: 998;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--p-dur) var(--p-ease);
}
.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.back-to-top:hover {
  background: var(--p-accent);
  transform: translateY(-4px);
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1024px) {
  h1 { font-size: 42px; }
  h2 { font-size: 32px; }
  .hero { padding: 140px 0 80px; }
  .hero h1 { font-size: 42px; }
  .hero-card {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .hero-points {
    border-left: none;
    border-top: 1px solid rgba(255, 255, 255, .3);
    padding-left: 0;
    padding-top: 24px;
  }
  .grid-3, .steps { grid-template-columns: repeat(2, 1fr); }
  .grid-3 > *:last-child, .steps > *:last-child { grid-column: 1 / -1; }
  .partners-card { gap: 48px; }
}

@media (max-width: 700px) {
  h1 { font-size: 30px; }
  h2 { font-size: 24px; }
  h3 { font-size: 18px; }

  .wrap { padding: 0 18px; }
  .site-nav .wrap { height: 64px; gap: 10px; }
  .brand { font-size: 16px; }
  .brand svg { flex: 0 0 20px; }
  .nav-links { gap: 0; }
  .nav-links a { padding: 8px 9px; font-size: 13px; }
  .site-nav .wrap > #t-theme-toggle { flex: 0 0 34px; width: 34px; height: 34px; }

  .hero { padding: 104px 0 56px; }
  .hero h1 { font-size: 30px; letter-spacing: 1px; }
  .hero .lede { font-size: 15px; margin-bottom: 24px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { width: 100%; padding: 13px 24px; }
  .hero-points { padding-top: 18px; }
  .hero-points li { font-size: 14px; padding: 10px 0; }

  .section { padding: 48px 0; }
  .section-head { margin-bottom: 32px; }
  .grid-3, .steps { grid-template-columns: 1fr; gap: 18px; }
  .grid-3 > *:last-child, .steps > *:last-child { grid-column: auto; }
  .feature, .step { padding: 26px 22px; }
  .feature .ico { width: 54px; height: 54px; margin-bottom: 18px; }
  .step::before { width: 42px; height: 42px; font-size: 18px; }

  .partners-card { padding: 32px 22px; gap: 32px; }
  .partners-card img { height: 26px; }

  .foot-inner { padding: 40px 0 20px; }
  .foot-cols { grid-template-columns: 1fr; gap: 28px; margin-bottom: 24px; }

  #t-theme-toggle { right: 16px; bottom: 16px; width: 42px; height: 42px; }
  .back-to-top { right: 16px; bottom: 70px; width: 42px; height: 42px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
  }
}

/* ============================================================
   入场动画（复刻 YUFA 的 wow.js + animate.css）
   A. CSS 动画 —— 首屏，打开即播
   B. 滚动触发 —— 首屏以下，带 .p-onscroll
   节奏：淡入 + 上移 30px，0.5s ease-in-out
   ============================================================ */
@keyframes p-fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes p-fadeInDown {
  from { opacity: 0; transform: translateY(-30px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes p-fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes p-zoomIn {
  from { opacity: 0; transform: scale(.9); }
  to   { opacity: 1; transform: scale(1); }
}

/* --- A. 首屏 --- */
.site-nav   { animation: p-fadeInDown .5s var(--p-ease) backwards; }
.hero h1    { animation: p-fadeInDown .5s var(--p-ease) .4s backwards; }
.hero .lede { animation: p-fadeInDown .5s var(--p-ease) .6s backwards; }
.hero-actions { animation: p-fadeInUp .5s var(--p-ease) .8s backwards; }
.hero-points  { animation: p-fadeIn .5s var(--p-ease) 1s backwards; }
.site-foot    { animation: p-fadeIn .5s var(--p-ease) backwards; }

/* --- B. 滚动触发 ---
   .js 由 head.php 打上：没 JS 时元素保持可见，不会白屏 */
.js .p-onscroll {
  opacity: 0;
  transform: translateY(30px);
}
.js .p-onscroll.p-in {
  opacity: 1;
  transform: translateY(0);
  transition: opacity .5s var(--p-ease), transform .5s var(--p-ease);
}

@media (prefers-reduced-motion: reduce) {
  .site-nav, .hero h1, .hero .lede, .hero-actions, .hero-points, .site-foot {
    animation: none !important;
  }
  .js .p-onscroll {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  .feature:hover, .step:hover, .partners-card img:hover,
  #t-theme-toggle:hover, .back-to-top:hover { transform: none; }
}