/* =========================================================
 *  MZ Landing — 多趣赚品牌落地页核心样式
 *  成都启辰瑾一科技有限公司  ·  Version 3.0
 * ========================================================= */

/* ---------- CSS Variables ---------- */
:root {
  --c-brand: #4F46E5;
  --c-brand-light: #6366F1;
  --c-brand-dark: #3730A3;
  --c-success: #10B981;
  --c-success-light: #D1FAE5;
  --c-warning: #F59E0B;
  --c-danger: #EF4444;
  --c-surface: #F9FAFB;
  --c-surface-alt: #F3F4F6;
  --c-bg: #FFFFFF;
  --c-text: #111827;
  --c-text-2: #4B5563;
  --c-text-3: #9CA3AF;
  --c-border: #E5E7EB;
  --c-border-light: #F3F4F6;
  --shadow-sm: 0 1px 2px rgba(0,0,0,.05);
  --shadow-md: 0 4px 12px rgba(79,70,229,.08);
  --shadow-lg: 0 12px 32px rgba(79,70,229,.12);
  --radius-s: 6px;
  --radius-m: 10px;
  --radius-l: 16px;
  --radius-xl: 24px;
  --ease: cubic-bezier(.4,0,.2,1);
  --font-body: "PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-display: "PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}

/* ---------- Reset ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-body);
  font-size:15px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-bg);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6{font-family:var(--font-display);font-weight:700;line-height:1.25;color:var(--c-text)}
h1{font-size:40px}
h2{font-size:30px}
h3{font-size:22px}
h4{font-size:18px}
p{font-size:15px;line-height:1.8;color:var(--c-text-2)}
a{color:var(--c-brand);text-decoration:none;transition:color .25s var(--ease)}
a:hover{color:var(--c-brand-dark);text-decoration:none}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none;padding:0;margin:0}

/* ---------- Container ---------- */
.mz-container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px}

/* ---------- Section ---------- */
.mz-sec{padding:80px 0}
.mz-sec--gray{background:var(--c-surface)}
.mz-sec--dark{background:var(--c-text);color:#fff}
.mz-sec__head{text-align:center;margin-bottom:56px}
.mz-sec__title{font-size:30px;font-weight:800;display:inline-block;position:relative;padding-bottom:14px}
.mz-sec__title::after{content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:48px;height:3px;background:linear-gradient(90deg,var(--c-brand),var(--c-success));border-radius:2px}
.mz-sec__sub{font-size:16px;color:var(--c-text-3);margin-top:16px;font-weight:400}

/* ---------- Buttons ---------- */
.mz-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 32px;border-radius:var(--radius-xl);font-size:15px;font-weight:600;
  cursor:pointer;transition:all .3s var(--ease);border:2px solid transparent;text-decoration:none;
}
.mz-btn--primary{background:var(--c-danger);color:#fff;border-color:var(--c-danger);box-shadow:0 4px 14px rgba(239,68,68,.3)}
.mz-btn--primary:hover{background:#DC2626;border-color:#DC2626;color:#fff;transform:translateY(-2px);box-shadow:0 6px 20px rgba(239,68,68,.4)}
.mz-btn--outline{background:transparent;color:#fff;border-color:rgba(255,255,255,.4)}
.mz-btn--outline:hover{background:rgba(255,255,255,.1);border-color:#fff;color:#fff}
.mz-btn--lg{padding:16px 44px;font-size:17px}
.mz-btn--ghost{background:var(--c-brand);color:#fff;border-color:var(--c-brand);box-shadow:0 4px 14px rgba(79,70,229,.25)}
.mz-btn--ghost:hover{background:var(--c-brand-dark);color:#fff;transform:translateY(-2px)}

/* ================================================================
 *  HEADER / NAV
 * ================================================================ */
.mz-hd{
  position:fixed;top:0;left:0;right:0;z-index:9000;
  background:rgba(255,255,255,.96);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--c-border-light);transition:box-shadow .3s var(--ease);
}
.mz-hd--shadow{box-shadow:0 2px 16px rgba(0,0,0,.06)}
.mz-hd__inner{display:flex;align-items:center;justify-content:space-between;padding:14px 0}
.mz-hd__brand{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:800;color:var(--c-brand);text-decoration:none}
.mz-hd__brand img{width:34px;height:34px;border-radius:var(--radius-s)}
.mz-hd__brand:hover{color:var(--c-brand-dark)}
.mz-hd__links{display:flex;gap:4px;align-items:center}
.mz-hd__links a{display:block;padding:8px 16px;color:var(--c-text);font-weight:500;font-size:14px;border-radius:var(--radius-s);transition:all .25s var(--ease)}
.mz-hd__links a:hover,.mz-hd__links a.is-active{color:var(--c-brand);background:rgba(79,70,229,.06)}
.mz-hd__toggle{display:none;background:none;border:none;padding:8px;cursor:pointer}
.mz-hd__toggle i{display:block;width:22px;height:2px;background:var(--c-text);margin:5px 0;border-radius:1px;transition:all .3s var(--ease)}

/* ================================================================
 *  HERO BANNER
 * ================================================================ */
.mz-hero{
  background:linear-gradient(160deg,#3730A3 0%,#4F46E5 35%,#6366F1 65%,#818CF8 100%);
  padding:140px 0 90px;position:relative;overflow:hidden;min-height:88vh;display:flex;align-items:center;
}
.mz-hero::before{
  content:'';position:absolute;top:-40%;right:-15%;width:550px;height:550px;
  background:radial-gradient(circle,rgba(255,255,255,.07) 0%,transparent 70%);border-radius:50%;
}
.mz-hero::after{
  content:'';position:absolute;bottom:-25%;left:-8%;width:380px;height:380px;
  background:radial-gradient(circle,rgba(16,185,129,.12) 0%,transparent 70%);border-radius:50%;
}
.mz-hero__body{color:#fff;position:relative;z-index:2;padding-top:30px}
.mz-hero__badge{display:inline-block;background:rgba(255,255,255,.15);backdrop-filter:blur(6px);padding:6px 18px;border-radius:20px;font-size:13px;color:rgba(255,255,255,.9);margin-bottom:20px}
.mz-hero__heading{font-size:46px;font-weight:900;color:#fff;margin-bottom:10px;letter-spacing:-.02em;line-height:1.15}
.mz-hero__tagline{font-size:20px;font-weight:300;color:rgba(255,255,255,.8);margin-bottom:22px}
.mz-hero__desc{font-size:15px;line-height:1.9;color:rgba(255,255,255,.75);margin-bottom:32px;max-width:500px}
.mz-hero__actions{display:flex;align-items:center;gap:24px;flex-wrap:wrap;margin-bottom:24px}
.mz-hero__qr-wrap{background:rgba(255,255,255,.12);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-radius:var(--radius-m);padding:14px 18px 10px;text-align:center}
.mz-hero__qr-wrap img{border-radius:6px;background:#fff;padding:5px}
.mz-hero__qr-label{font-size:12px;color:rgba(255,255,255,.7);margin-top:6px}
.mz-hero__visual{position:relative;z-index:2;text-align:center}
.mz-hero__carousel .item{padding:8px}
.mz-hero__carousel .owl-dots{text-align:center;margin-top:14px}
.mz-hero__carousel .owl-dot{display:inline-block;width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.3);margin:0 4px;transition:all .3s var(--ease)}
.mz-hero__carousel .owl-dot.active{background:#fff;transform:scale(1.3)}

/* ================================================================
 *  METRICS BAR
 * ================================================================ */
.mz-kpi{background:#fff;padding:44px 0;border-bottom:1px solid var(--c-border);position:relative;z-index:10}
.mz-kpi__item{text-align:center;padding:16px}
.mz-kpi__num{font-size:40px;font-weight:900;color:var(--c-brand);line-height:1;margin-bottom:6px}
.mz-kpi__label{font-size:13px;color:var(--c-text-3);font-weight:500}

/* ================================================================
 *  ADVANTAGE CARDS
 * ================================================================ */
.mz-adv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.mz-adv-card{
  background:#fff;border-radius:var(--radius-l);padding:36px 28px;
  box-shadow:var(--shadow-md);transition:all .35s var(--ease);text-align:center;
}
.mz-adv-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.mz-adv-card__icon{
  width:64px;height:64px;border-radius:50%;
  background:linear-gradient(135deg,var(--c-brand),var(--c-success));
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:26px;margin:0 auto 18px;box-shadow:0 4px 14px rgba(79,70,229,.2);
}
.mz-adv-card__name{font-size:18px;font-weight:700;margin-bottom:10px;color:var(--c-text)}
.mz-adv-card__txt{font-size:14px;color:var(--c-text-2);line-height:1.7}

/* ================================================================
 *  HOW-TO STEPS
 * ================================================================ */
.mz-steps{display:flex;gap:32px;align-items:flex-start;justify-content:center;flex-wrap:wrap}
.mz-step{text-align:center;flex:1;min-width:220px;max-width:300px;position:relative}
.mz-step__circle{
  width:80px;height:80px;border-radius:50%;
  background:linear-gradient(135deg,var(--c-brand-light),var(--c-brand));
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:32px;margin:0 auto 20px;
  box-shadow:0 6px 20px rgba(79,70,229,.25);
}
.mz-step__num{
  position:absolute;top:-8px;right:calc(50% - 52px);
  width:28px;height:28px;border-radius:50%;
  background:var(--c-danger);color:#fff;font-size:14px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.mz-step__title{font-size:18px;font-weight:700;margin-bottom:8px}
.mz-step__info{font-size:14px;color:var(--c-text-2);line-height:1.7}

/* ================================================================
 *  TASK TYPES SECTION
 * ================================================================ */
.mz-tasks__row{display:flex;align-items:center;gap:48px}
.mz-tasks__media{flex:1;min-width:0}
.mz-tasks__media img{border-radius:var(--radius-l);width:100%}
.mz-tasks__content{flex:1;min-width:0;padding:20px 0}
.mz-tasks__intro{font-size:16px;color:var(--c-text-2);margin-bottom:28px;margin-top:16px}
.mz-task-list{display:flex;flex-direction:column;gap:0}
.mz-task-entry{
  display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--c-border);transition:all .25s var(--ease);
}
.mz-task-entry:last-child{border-bottom:none}
.mz-task-entry:hover{padding-left:8px}
.mz-task-entry__icon{
  width:40px;height:40px;min-width:40px;border-radius:var(--radius-s);
  background:var(--c-success-light);color:var(--c-success);
  display:flex;align-items:center;justify-content:center;font-size:18px;
  transition:all .25s var(--ease);
}
.mz-task-entry:hover .mz-task-entry__icon{background:var(--c-success);color:#fff}
.mz-task-entry__name{font-size:15px;font-weight:700;margin-bottom:2px;color:var(--c-text)}
.mz-task-entry__detail{font-size:13px;color:var(--c-text-2);line-height:1.6}

/* ================================================================
 *  ABOUT / PLATFORM INFO
 * ================================================================ */
.mz-about__row{display:flex;align-items:center;gap:48px}
.mz-about__text{flex:1;min-width:0}
.mz-about__text h2{text-align:left;margin-bottom:20px}
.mz-about__text h2::after{left:0;transform:none}
.mz-about__text p{margin-bottom:14px}
.mz-about__text strong{color:var(--c-text)}
.mz-about__media{flex:1;min-width:0;text-align:center}
.mz-about__media img{border-radius:var(--radius-l);max-width:100%}

/* ================================================================
 *  FAQ ACCORDION
 * ================================================================ */
.mz-faq{max-width:780px;margin:0 auto}
.mz-faq__item{
  border:1px solid var(--c-border);border-radius:var(--radius-m);
  margin-bottom:10px;overflow:hidden;transition:all .3s var(--ease);
}
.mz-faq__item:hover{border-color:var(--c-brand);box-shadow:0 2px 10px rgba(79,70,229,.05)}
.mz-faq__q{
  padding:18px 22px;font-size:15px;font-weight:600;color:var(--c-text);
  cursor:pointer;display:flex;justify-content:space-between;align-items:center;
  background:#fff;transition:color .25s var(--ease);user-select:none;
}
.mz-faq__q:hover{color:var(--c-brand)}
.mz-faq__q .mz-faq__arr{font-size:18px;color:var(--c-brand);transition:transform .3s var(--ease);min-width:20px;text-align:center}
.mz-faq__item.is-open .mz-faq__arr{transform:rotate(45deg)}
.mz-faq__a{max-height:0;overflow:hidden;transition:max-height .4s var(--ease)}
.mz-faq__item.is-open .mz-faq__a{max-height:280px}
.mz-faq__a-inner{padding:0 22px 18px;font-size:14px;line-height:1.8;color:var(--c-text-2)}

/* ================================================================
 *  SCREENSHOT GALLERY
 * ================================================================ */
.mz-shots__item{padding:6px;transition:transform .3s var(--ease)}
.mz-shots__item:hover{transform:scale(1.03)}
.mz-shots__item img{border-radius:var(--radius-s);border:2px dashed var(--c-brand-light);width:100%}
.mz-shots-carousel .owl-dots{text-align:center;margin-top:36px}
.mz-shots-carousel .owl-dot{display:inline-block;width:9px;height:9px;border-radius:50%;border:2px solid var(--c-brand);margin:0 4px;transition:all .3s var(--ease)}
.mz-shots-carousel .owl-dot.active{background:var(--c-brand)}

/* ================================================================
 *  EXTRA FEATURES
 * ================================================================ */
.mz-feat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.mz-feat-card{
  display:flex;gap:16px;padding:24px;background:#fff;border-radius:var(--radius-m);
  box-shadow:var(--shadow-sm);transition:all .3s var(--ease);
}
.mz-feat-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.mz-feat-card__icon{
  width:48px;height:48px;min-width:48px;border-radius:var(--radius-s);
  background:linear-gradient(135deg,rgba(79,70,229,.08),rgba(16,185,129,.08));
  color:var(--c-brand);display:flex;align-items:center;justify-content:center;font-size:22px;
}
.mz-feat-card__title{font-size:16px;font-weight:700;margin-bottom:6px;color:var(--c-text)}
.mz-feat-card__desc{font-size:13px;color:var(--c-text-2);line-height:1.7}

/* ================================================================
 *  PARTNERS
 * ================================================================ */
.mz-partners{text-align:center}
.mz-partners__grid{display:flex;justify-content:center;align-items:center;gap:32px;flex-wrap:wrap}
.mz-partners__grid img{max-width:140px;opacity:.65;filter:grayscale(15%);transition:all .3s var(--ease)}
.mz-partners__grid img:hover{opacity:1;filter:grayscale(0);transform:scale(1.06)}

/* ================================================================
 *  DOWNLOAD CTA
 * ================================================================ */
.mz-cta-sec{
  background:linear-gradient(135deg,#3730A3 0%,#4F46E5 45%,#6366F1 100%);
  color:#fff;text-align:center;position:relative;overflow:hidden;
}
.mz-cta-sec::before{
  content:'';position:absolute;top:-80px;right:-80px;width:260px;height:260px;
  background:radial-gradient(circle,rgba(255,255,255,.05) 0%,transparent 70%);border-radius:50%;
}
.mz-cta-sec h2{color:#fff}
.mz-cta-sec h2::after{background:rgba(255,255,255,.4)}
.mz-cta-sec .mz-sec__sub{color:rgba(255,255,255,.65)}
.mz-cta-sec__btns{display:flex;justify-content:center;gap:18px;flex-wrap:wrap;margin-top:36px;position:relative;z-index:2}
.mz-cta-sec__btns .mz-btn{min-width:200px}

/* ================================================================
 *  FOOTER
 * ================================================================ */
.mz-ft{background:#111827;padding:52px 0 0;color:rgba(255,255,255,.6)}
.mz-ft__brand{font-size:24px;font-weight:800;color:#fff;margin-bottom:10px}
.mz-ft__about{font-size:13px;color:rgba(255,255,255,.45);max-width:380px;margin:0 auto 20px}
.mz-ft__nav{display:flex;justify-content:center;gap:20px;list-style:none;padding:0;margin:0 0 24px}
.mz-ft__nav a{color:rgba(255,255,255,.45);font-size:13px;transition:color .25s var(--ease)}
.mz-ft__nav a:hover{color:var(--c-success)}
.mz-ft__social{display:flex;justify-content:center;gap:10px;margin-bottom:32px}
.mz-ft__social a{
  width:36px;height:36px;border-radius:50%;border:1px solid rgba(255,255,255,.15);
  display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.5);
  font-size:16px;transition:all .25s var(--ease);
}
.mz-ft__social a:hover{background:var(--c-success);border-color:var(--c-success);color:#fff}
.mz-ft__copy{border-top:1px solid rgba(255,255,255,.06);padding:18px 0;text-align:center;font-size:12px;color:rgba(255,255,255,.3)}
.mz-ft__copy a{color:rgba(255,255,255,.4)}
.mz-ft__copy a:hover{color:var(--c-success)}

/* ================================================================
 *  BACK TO TOP
 * ================================================================ */
.mz-gotop{
  position:fixed;bottom:-100px;right:28px;width:42px;height:42px;border-radius:50%;
  background:var(--c-brand);color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:17px;cursor:pointer;transition:all .3s var(--ease);
  box-shadow:0 4px 14px rgba(79,70,229,.3);z-index:999;
}
.mz-gotop:hover{background:var(--c-brand-dark);transform:translateY(-3px)}
.mz-gotop.is-visible{bottom:28px}

/* ================================================================
 *  RESPONSIVE — Tablet ≤ 991px
 * ================================================================ */
@media screen and (max-width:991px){
  h1{font-size:34px} h2{font-size:26px} h3{font-size:20px}
  .mz-sec{padding:56px 0}
  .mz-sec__title{font-size:26px}
  .mz-sec__head{margin-bottom:36px}

  /* Nav */
  .mz-hd__toggle{display:block}
  .mz-hd__links{
    display:none;position:absolute;top:100%;left:0;right:0;
    background:rgba(255,255,255,.98);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
    flex-direction:column;padding:0 16px;box-shadow:0 8px 20px rgba(0,0,0,.08);
    border-top:1px solid var(--c-border-light);gap:0;
  }
  .mz-hd__links.is-open{display:flex;padding:10px 16px}
  .mz-hd__links a{padding:12px 14px;font-size:15px}

  /* Hero */
  .mz-hero{padding:100px 0 50px;min-height:auto}
  .mz-hero__heading{font-size:34px}
  .mz-hero__tagline{font-size:17px}

  /* Grids */
  .mz-adv-grid{grid-template-columns:repeat(2,1fr);gap:16px}
  .mz-tasks__row,.mz-about__row{flex-direction:column;gap:28px}
  .mz-tasks__media,.mz-tasks__content,.mz-about__text,.mz-about__media{flex:none;width:100%}
  .mz-feat-grid{grid-template-columns:1fr}
}

/* ================================================================
 *  RESPONSIVE — Mobile ≤ 767px
 * ================================================================ */
@media screen and (max-width:767px){
  h1{font-size:28px} h2{font-size:22px}
  .mz-hero__heading{font-size:28px}
  .mz-hero__actions{flex-direction:column;align-items:flex-start}
  .mz-adv-grid{grid-template-columns:1fr}
  .mz-steps{flex-direction:column;align-items:center}
  .mz-partners__grid{gap:20px}
  .mz-cta-sec__btns{flex-direction:column;align-items:center}
  .mz-cta-sec__btns .mz-btn{width:80%}
}