/* ========================================================
   熊猫省钱 官网样式 — 熊猫橙品牌，暖调中性，移动优先
   设计原则：橙色点睛、克制留白、中性投影、不用渐变文字
   ======================================================== */
:root{
  --ink:#241c15;          /* 暖调熊猫黑 */
  --ink-soft:#5c5249;     /* 正文暖灰 */
  --brand:#fb6a13;        /* 熊猫橙·主色 */
  --brand-dark:#e2540a;   /* 橙·hover/深 */
  --brand-soft:#fff4ea;   /* 暖米白·浅底 */
  --gold:#f6a623;         /* 金币黄·点睛 */
  /* 兼容旧变量名 */
  --green:var(--brand);--green-dark:var(--brand-dark);--green-soft:var(--brand-soft);
  --paper:#ffffff;
  --bg:#faf7f3;           /* 暖白底 */
  --line:#ece4da;         /* 暖米灰描边 */
  --muted:#9a8d80;
  --radius:20px;
  --radius-sm:14px;
  --shadow:0 1px 2px rgba(67,40,12,.04),0 8px 24px rgba(67,40,12,.06);
  --shadow-lg:0 2px 6px rgba(67,40,12,.05),0 20px 44px rgba(67,40,12,.10);
  --maxw:1120px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:88px;-webkit-text-size-adjust:100%}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{line-height:1.2;margin:0;letter-spacing:-.02em}
:where(a,button):focus-visible{outline:2.5px solid var(--brand);outline-offset:3px;border-radius:6px}
[id]{scroll-margin-top:88px}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.container--narrow{max-width:760px}
.accent{color:var(--brand)}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;white-space:nowrap;
  font-weight:600;font-size:15px;cursor:pointer;border:none;
  background:var(--brand);color:#fff;padding:12px 22px;border-radius:999px;
  transition:transform .18s cubic-bezier(.2,.7,.3,1),box-shadow .18s ease,background .18s ease;
  box-shadow:0 1px 2px rgba(67,40,12,.10),0 6px 16px rgba(251,106,19,.16)}
.btn:hover{background:var(--brand-dark);transform:translateY(-2px);
  box-shadow:0 2px 6px rgba(67,40,12,.12),0 10px 22px rgba(251,106,19,.22)}
.btn:active{transform:translateY(0)}
.btn--lg{padding:16px 32px;font-size:17px}
.btn--sm{padding:9px 18px;font-size:14px}
.btn--ghost{background:transparent;color:var(--ink);box-shadow:none;border:1.5px solid var(--line)}
.btn--ghost:hover{background:#fff;border-color:var(--ink);color:var(--ink);transform:translateY(-2px)}

/* ---------- 导航 ---------- */
.nav{position:sticky;top:0;z-index:50;background:rgba(250,247,243,.82);
  backdrop-filter:saturate(180%) blur(16px);-webkit-backdrop-filter:saturate(180%) blur(16px);
  border-bottom:1px solid var(--line)}
.nav__inner{display:flex;align-items:center;gap:20px;height:68px}
.nav__brand{display:flex;align-items:center;margin-right:auto}
.nav__brand img{transition:opacity .2s}.nav__brand:hover img{opacity:.85}
.nav__links{display:flex;gap:30px}
.nav__links a{font-size:15px;color:var(--ink-soft);font-weight:500;transition:color .15s}
.nav__links a:hover{color:var(--brand)}
.nav__toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px}
.nav__toggle span{width:24px;height:2.5px;background:var(--ink);border-radius:2px;transition:.25s}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:88px 0 104px;
  background:radial-gradient(110% 110% at 88% -10%,var(--brand-soft) 0%,rgba(255,244,234,0) 52%),
             linear-gradient(180deg,#fff 0%,var(--bg) 100%)}
.hero__inner{display:flex;align-items:center;gap:56px;position:relative;z-index:1}
.hero__text{flex:1;min-width:0}
.hero__badge{display:inline-flex;align-items:center;gap:6px;background:#fff;border:1px solid var(--line);
  color:var(--brand-dark);font-size:14px;font-weight:600;padding:7px 16px;border-radius:999px;box-shadow:var(--shadow)}
.hero__title{font-size:clamp(38px,6vw,60px);font-weight:800;margin:22px 0 18px;line-height:1.1}
.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;
  clip:rect(0,0,0,0);white-space:nowrap;border:0}
.hero__sub{font-size:clamp(16px,2vw,19px);color:var(--ink-soft);max-width:520px;margin:0 0 30px}
.hero__cta{display:flex;gap:14px;flex-wrap:wrap}
.hero__note{margin-top:20px;font-size:14px;color:var(--muted)}
.hero__art{flex:0 0 auto;width:320px;max-width:40%;position:relative;display:flex;justify-content:center}

/* ---------- Hero 手机截图（iPhone 外壳） ---------- */
.phone{position:relative;width:266px;max-width:100%;background:transparent;
  border-radius:37px;padding:0;border:0;
  box-shadow:0 6px 24px rgba(67,40,12,.10),0 2px 8px rgba(67,40,12,.06);
  animation:float 6s ease-in-out infinite}
.phone__notch{display:none}
.phone__shot{display:block;width:100%;height:auto;border-radius:37px;
  background:#fff}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-14px)}}
.hero__wave{display:none}

/* ---------- Section 通用 ---------- */
.section{padding:92px 0}
.section--alt{background:#fff}
.section__head{text-align:center;max-width:660px;margin:0 auto 56px}
.section__eyebrow{display:inline-block;color:var(--brand-dark);font-weight:700;
  font-size:13px;letter-spacing:1.5px;text-transform:uppercase;margin-bottom:14px}
.section__title{font-size:clamp(28px,4vw,40px);font-weight:800}
.section__lead{font-size:clamp(16px,2vw,18px);color:var(--ink-soft);margin-top:14px}
.section__head--light .section__title,.section__head--light .section__lead{color:#fff}
.section__head--light .section__eyebrow{color:var(--gold)}

/* ---------- 平台条 ---------- */
.platforms{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:30px 0}
.platforms__label{text-align:center;color:var(--muted);font-size:13px;letter-spacing:.5px;margin:0 0 16px}
.platforms__list{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;justify-content:center;gap:12px 14px}
.platforms__list li{font-weight:700;font-size:15px;color:var(--ink-soft);background:var(--bg);
  border:1px solid var(--line);border-radius:999px;padding:8px 18px;
  display:inline-flex;align-items:center;gap:8px;transition:color .15s,border-color .15s}
.platforms__list li::before{content:"";width:8px;height:8px;border-radius:50%;
  background:var(--dot,var(--brand));flex:0 0 auto}
.platforms__list li:hover{color:var(--brand);border-color:#efd9c5}

/* ---------- 网格与卡片 ---------- */
.grid{display:grid;gap:24px}
.grid--features{grid-template-columns:repeat(3,1fr)}
.grid--bento{grid-template-columns:repeat(3,1fr);grid-auto-rows:minmax(168px,auto)}
.grid--bento .card--xl{grid-column:span 2;grid-row:span 2;display:flex;flex-direction:column}
.grid--bento .card--xl p{flex:1}
.card{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:30px;box-shadow:var(--shadow);overflow:hidden;
  transition:transform .22s cubic-bezier(.2,.7,.3,1),box-shadow .22s ease,border-color .22s}
.card--feature:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:#efd9c5}
.card--xl{background:linear-gradient(160deg,#fffaf4 0%,#fff 60%);border-color:#f1e2d2;padding:34px}
.card--xl h3{font-size:23px}
.card--xl p{font-size:16px}
.card__tag{position:absolute;top:24px;right:24px;font-size:12px;font-weight:700;color:var(--brand-dark);
  background:#fff;border:1px solid #efd9c5;border-radius:999px;padding:4px 12px}
.card__icon{width:58px;height:58px;display:flex;align-items:center;justify-content:center;
  color:var(--brand);background:var(--brand-soft);border:1px solid var(--line);border-radius:16px;margin:0 auto 18px}
.card__icon svg{width:28px;height:28px;display:block;fill:none;stroke:currentColor;
  stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.card--feature{text-align:center}
.card--feature .card__icon{margin-left:auto;margin-right:auto}
.card h3{font-size:19px;margin-bottom:9px}
.card p{color:var(--ink-soft);font-size:15px;margin:0}

/* ---------- 步骤流程 ---------- */
.steps{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.step{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:36px 28px;text-align:center;box-shadow:var(--shadow)}
.step__num{width:52px;height:52px;margin:0 auto 18px;border-radius:50%;background:var(--brand);
  color:#fff;font-size:23px;font-weight:800;display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 14px rgba(251,106,19,.20)}
.step h3{font-size:19px;margin-bottom:9px}
.step p{color:var(--ink-soft);font-size:15px;margin:0}
.step:not(:last-child)::after{content:"→";position:absolute;right:-19px;top:50%;
  transform:translateY(-50%);color:#e7b694;font-size:22px;font-weight:700;z-index:2}

/* ---------- 数据区 ---------- */
.section--data{position:relative;overflow:hidden;color:#fff;background:linear-gradient(135deg,#241c15 0%,#322619 100%)}
.grid--stats{grid-template-columns:repeat(4,1fr)}
.stat{text-align:center;padding:18px}
.stat__num{font-size:clamp(34px,4vw,46px);font-weight:800;line-height:1.05;color:var(--gold);
  white-space:nowrap;font-variant-numeric:tabular-nums}
.stat__label{margin-top:10px;color:#d8cdc0;font-size:15px}
.stat__disclaimer{text-align:center;color:#8c8073;font-size:13px;margin-top:38px}

/* ---------- 二维码区 ---------- */
.grid--qr{grid-template-columns:repeat(2,1fr);max-width:760px;margin:0 auto}
.card--qr{text-align:center;display:flex;flex-direction:column;align-items:center;padding:36px}
.card--qr img{border:1px solid var(--line);border-radius:var(--radius-sm);padding:12px;background:#fff;width:220px;height:220px}
.card--qr h3{margin:20px 0 6px}
.card--qr p{color:var(--ink-soft);font-size:15px;margin:0}
.qr__tag{align-self:center;font-size:13px;font-weight:700;color:#fff;padding:5px 15px;border-radius:999px;margin-bottom:20px}
.qr__tag--green{background:var(--brand)}
.qr__tag--dark{background:var(--ink)}

/* ---------- FAQ ---------- */
.faq{display:flex;flex-direction:column;gap:14px}
.faq__item{background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);padding:4px 24px;transition:box-shadow .2s,border-color .2s}
.faq__item:hover{border-color:#efd9c5}
.faq__item[open]{box-shadow:var(--shadow)}
.faq__item summary{list-style:none;cursor:pointer;font-weight:600;font-size:17px;
  padding:20px 0;display:flex;justify-content:space-between;align-items:center;gap:12px}
.faq__item summary::-webkit-details-marker{display:none}
.faq__item summary::after{content:"+";font-size:26px;font-weight:300;color:var(--brand);transition:transform .25s}
.faq__item[open] summary::after{transform:rotate(45deg)}
.faq__item p{margin:0 0 20px;color:var(--ink-soft);font-size:15px}

/* ---------- 页脚 ---------- */
.footer{background:var(--ink);color:#cfc4b6}
.footer__inner{display:flex;justify-content:space-between;gap:40px;padding:64px 24px 44px;flex-wrap:wrap}
.footer__brand{max-width:320px}
.footer__brand img{margin-bottom:16px;opacity:.92}
.footer__brand p{font-size:14px;color:#9a8d80;margin:0}
.footer__nav{display:flex;gap:64px}
.footer__col h4{font-size:15px;color:#fff;margin-bottom:16px}
.footer__col a{display:block;font-size:14px;color:#9a8d80;margin-bottom:11px;transition:color .15s}
.footer__col a:hover{color:var(--brand)}
.footer__bottom{border-top:1px solid #3a3026;padding:22px 0;font-size:13px;color:#857a6d}
.footer__bottom .container{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}
.footer__bottom a{color:#9a8d80}
.footer__bottom a:hover{color:var(--brand)}
.footer__beian{display:flex;align-items:center;flex-wrap:wrap;gap:6px 10px}
.footer__beian-sep{color:#4d4336}
.footer__gongan{display:inline-flex;align-items:center;gap:6px}
.footer__gongan img{display:block}

/* ---------- 滚动入场动画 ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.7,.3,1)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media(max-width:900px){
  .grid--features{grid-template-columns:repeat(2,1fr)}
  .grid--bento{grid-template-columns:repeat(2,1fr);grid-auto-rows:auto}
  .grid--bento .card--xl{grid-column:auto;grid-row:auto}
  .grid--stats{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:720px){
  .nav__links{position:fixed;inset:68px 0 auto 0;background:rgba(255,255,255,.98);flex-direction:column;
    gap:0;padding:8px 24px 16px;border-bottom:1px solid var(--line);
    transform:translateY(-130%);transition:transform .28s cubic-bezier(.2,.7,.3,1);box-shadow:var(--shadow-lg)}
  .nav__links.is-open{transform:none}
  .nav__links a{padding:14px 0;border-bottom:1px solid var(--line)}
  .nav__toggle{display:flex}
  .nav__inner{gap:10px}
  .nav__brand img{width:140px;height:auto}
  .btn--sm{padding:8px 14px;font-size:13px}
  .hero{padding:40px 0 64px}
  .hero__inner{flex-direction:column;text-align:center;gap:32px}
  .hero__title{margin:18px 0 16px}
  .hero__art{width:auto;max-width:100%;margin-top:4px}
  .phone{width:210px}
  .hero__sub{margin-left:auto;margin-right:auto}
  .hero__cta{justify-content:center;flex-wrap:nowrap}
  .hero__cta .btn--lg{padding:16px 22px;font-size:16px}
  .section{padding:60px 0}
  .grid--bento{grid-template-columns:1fr}
  .grid--features{grid-template-columns:repeat(3,1fr);gap:12px}
  .steps{grid-template-columns:repeat(3,1fr);gap:12px}
  .grid--qr{grid-template-columns:repeat(2,1fr);gap:12px}
  .card{padding:18px 12px;border-radius:14px}
  .card__icon{width:42px;height:42px;border-radius:12px;margin-bottom:12px}
  .card__icon svg{width:21px;height:21px}
  .card h3{font-size:15px;margin-bottom:6px}
  .card p{font-size:12.5px;line-height:1.5}
  .step{padding:22px 12px;border-radius:14px}
  .step__num{width:40px;height:40px;font-size:18px;margin-bottom:12px}
  .step h3{font-size:15px}
  .step p{font-size:12.5px;line-height:1.5}
  .card--qr{padding:16px 10px}
  .card--qr img{width:100%;height:auto}
  .grid--bento .card--xl{grid-column:auto;grid-row:auto}
  .step:not(:last-child)::after{content:"→";right:-9px;top:30px;bottom:auto;left:auto;transform:none;font-size:16px}
  .footer__inner{flex-direction:column;gap:28px}
  .footer__nav{gap:44px}
  .footer__bottom .container{flex-direction:column;justify-content:center;align-items:center;text-align:center}
  .footer__beian{justify-content:center}
  .platforms__list{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
  .platforms__list li{padding:8px 4px;text-align:center;font-size:13.5px;justify-content:center;gap:6px}
  .grid--stats{grid-template-columns:repeat(2,1fr)}
  .stat{padding:12px 6px}
}
@media(prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
}