/* 麦塔出海 · 官网样式 */
:root{
  --brand:#3468f5; --brand-2:#2a55d0; --brand-soft:#eef3ff;
  --ink:#0c1a33; --ink-2:#1d2f4d; --muted:#5d6c84; --muted-2:#7c8ba0;
  --line:#e3e9f3; --bg:#f6f8fc; --white:#fff;
  --navy:#0b1a33; --navy-2:#122747;
  --green:#1faa59; --radius:18px; --radius-sm:12px;
  --shadow:0 24px 60px -24px rgba(15,37,80,.28);
  --shadow-sm:0 10px 30px -18px rgba(15,37,80,.28);
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --max:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:86px}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--white);font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.28;letter-spacing:-.02em;font-weight:650;text-wrap:balance}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
.wrap{width:min(var(--max),calc(100% - 48px));margin:0 auto}
.sprite{position:absolute;width:0;height:0;overflow:hidden}
.icon{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex:none}
.only-wide{display:none}
.nowrap{white-space:nowrap}
@media(min-width:820px){.only-wide{display:inline}}
::selection{background:#c9d8ff;color:#0b1a33}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.86);backdrop-filter:blur(14px);border-bottom:1px solid rgba(227,233,243,.9)}
.header-inner{display:flex;align-items:center;gap:24px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand img{border-radius:9px}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-text strong{font-size:17px;letter-spacing:.01em}
.brand-text small{font-size:9px;letter-spacing:.28em;color:var(--muted-2);margin-top:3px}
.main-nav{display:flex;align-items:center;gap:26px;margin-left:auto;font-size:14.5px;color:var(--ink-2)}
.main-nav>a{position:relative;padding:6px 0;transition:color .18s}
.main-nav>a:not(.nav-cta):hover{color:var(--brand)}
.main-nav>a:not(.nav-cta)::after{content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;background:var(--brand);border-radius:2px;transition:right .2s}
.main-nav>a:not(.nav-cta):hover::after{right:0}
.nav-cta{background:var(--brand);color:#fff;padding:9px 18px !important;border-radius:999px;font-weight:600;box-shadow:0 8px 20px -10px rgba(52,104,245,.9)}
.nav-cta:hover{background:var(--brand-2)}
.nav-toggle{display:none;margin-left:auto;width:42px;height:42px;border:1px solid var(--line);background:#fff;border-radius:11px;cursor:pointer;padding:0;align-items:center;justify-content:center;flex-direction:column;gap:5px}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:.2s}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* hero */
.hero{position:relative;overflow:hidden;padding:86px 0 54px;background:linear-gradient(180deg,#f8faff 0%,#fdfefe 62%,#fff 100%)}
.hero-bg{position:absolute;inset:0;pointer-events:none}
.hero-bg::before,.hero-bg::after{content:"";position:absolute;border-radius:50%;filter:blur(70px);opacity:.55}
.hero-bg::before{width:560px;height:560px;left:-160px;top:-220px;background:radial-gradient(circle,#dbe7ff 0%,rgba(219,231,255,0) 70%)}
.hero-bg::after{width:620px;height:620px;right:-200px;top:-80px;background:radial-gradient(circle,#e5e0ff 0%,rgba(229,224,255,0) 70%)}
.hero-inner{position:relative;text-align:center}
.eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:13.5px;color:var(--brand-2);background:#eef3ff;border:1px solid #dce7ff;padding:6px 14px;border-radius:999px;font-weight:550}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 4px rgba(52,104,245,.14)}
.hero h1{font-size:clamp(34px,5.2vw,60px);margin:26px auto 0;max-width:880px;letter-spacing:-.035em}
.hero h1 em{font-style:normal;color:var(--brand);position:relative;white-space:nowrap}
.hero h1 em::after{content:"";position:absolute;left:0;right:0;bottom:6px;height:10px;background:rgba(52,104,245,.14);z-index:-1;border-radius:4px}
.lede{max-width:760px;margin:22px auto 0;color:var(--muted);font-size:clamp(15.5px,1.5vw,18px);line-height:1.85}
.hero-actions{display:flex;justify-content:center;gap:12px;flex-wrap:wrap;margin-top:30px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 24px;border-radius:12px;font-weight:600;font-size:15px;border:1px solid transparent;transition:transform .15s,box-shadow .2s,background .2s;cursor:pointer}
.btn .icon{width:18px;height:18px}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 16px 30px -16px rgba(52,104,245,.95)}
.btn-primary:hover{background:var(--brand-2)}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink-2);box-shadow:var(--shadow-sm)}
.btn-ghost:hover{border-color:#c9d6ee}
.btn-light{background:#fff;color:var(--brand-2)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.4);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.1)}
.hero-note{margin-top:16px;color:var(--muted-2);font-size:13px}
.channel-chips{display:flex;justify-content:center;flex-wrap:wrap;gap:9px;margin-top:26px}
.chip{display:inline-flex;align-items:center;gap:7px;background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 13px;font-size:12.5px;color:var(--ink-2);box-shadow:0 6px 16px -14px rgba(15,37,80,.4)}
.ch-dot{width:8px;height:8px;border-radius:50%;flex:none}
.ch-fb{background:#1877f2}.ch-ig{background:linear-gradient(135deg,#f9ce34,#ee2a7b 55%,#6228d7)}.ch-wa{background:#25d366}.ch-ms{background:#0084ff}.ch-ad{background:#0b1a33}

/* shared section */
section{position:relative}
section[id]{scroll-margin-top:86px}
.section-head{max-width:780px;margin:0 auto 44px;text-align:center}
.section-head.narrow{max-width:620px}
.section-head.left{text-align:left;margin:0 0 34px}
.kicker{font-size:12.5px;font-weight:650;letter-spacing:.16em;text-transform:uppercase;color:var(--brand);margin-bottom:14px}
.section-head h2{font-size:clamp(26px,3.4vw,38px);letter-spacing:-.03em}
.section-sub{color:var(--muted);margin-top:14px;font-size:16px}
.fineprint{color:var(--muted-2);font-size:12.5px;line-height:1.7;margin-top:14px}
.fineprint.center{text-align:center}

/* preview */
.preview{padding:24px 0 90px;background:#fff}
.browser{max-width:1080px;margin:0 auto;border-radius:20px;overflow:hidden;box-shadow:var(--shadow);border:1px solid #dfe7f4;background:#f3f6fc}
.browser-bar{display:flex;align-items:center;gap:6px;padding:12px 16px;background:#eef2f9;border-bottom:1px solid #e1e8f3}
.browser-bar>span{width:10px;height:10px;border-radius:50%;background:#cfd9e8}
.browser-bar>span:nth-child(1){background:#f0b3ac}.browser-bar>span:nth-child(2){background:#f3d392}.browser-bar>span:nth-child(3){background:#a9d8b4}
.browser-url{margin-left:14px;background:#fff;border:1px solid #e2e9f4;border-radius:7px;padding:3px 12px;font-size:11.5px;color:#8b99ad;letter-spacing:.02em}
.preview-tabs{display:flex;gap:4px;padding:10px 14px 0;background:#fff;border-bottom:1px solid #edf1f8;overflow-x:auto}
.preview-tab{background:none;border:0;padding:10px 14px;font-size:13.5px;color:var(--muted);border-bottom:2px solid transparent;cursor:pointer;white-space:nowrap}
.preview-tab.is-active{color:var(--brand-2);border-bottom-color:var(--brand);font-weight:600}
.shot{margin:0;background:#fff}
.shot img{width:100%;height:auto;display:block;aspect-ratio:1200/833;object-fit:cover;object-position:top}
.shot-note{text-align:center;color:var(--muted-2);font-size:12.5px;margin-top:16px}

/* pains */
.pains{padding:86px 0;background:var(--bg);border-top:1px solid #eef2f9;border-bottom:1px solid #eef2f9}
.pain-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.pain{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;position:relative;box-shadow:var(--shadow-sm)}
.pain-num{font-size:12px;font-weight:700;letter-spacing:.12em;color:#b9c6db}
.pain h3{font-size:19px;margin:14px 0 10px}
.pain p{color:var(--muted);font-size:14.5px}

/* features */
.features{padding:92px 0;background:#fff}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.feature{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:transform .18s,box-shadow .2s,border-color .2s}
.feature:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#cfdcf4}
.f-icon{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:12px;background:var(--brand-soft);color:var(--brand);margin-bottom:16px}
.f-icon .icon{width:22px;height:22px}
.feature h3{font-size:18px;margin-bottom:8px}
.feature p{color:var(--muted);font-size:14.5px;line-height:1.75}

/* flow */
.flow{padding:88px 0;background:linear-gradient(180deg,#f8faff,#fff)}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;counter-reset:step}
.steps li{position:relative;padding:26px 22px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm)}
.steps li::after{content:"";position:absolute;top:44px;right:-12px;width:24px;height:1px;background:#cfdaee;display:block}
.steps li:last-child::after{display:none}
.step-no{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:50%;background:var(--brand);color:#fff;font-size:13px;font-weight:700;margin-bottom:14px}
.steps h3{font-size:17px;margin-bottom:7px}
.steps p{color:var(--muted);font-size:14px}

/* ai */
.ai{padding:96px 0;background:#0b1a33;color:#e8edf7;overflow:hidden}
.ai .kicker{color:#8fb0ff}
.ai-inner{display:grid;grid-template-columns:1.02fr .98fr;gap:56px;align-items:center}
.ai-copy h2{font-size:clamp(27px,3.5vw,40px);color:#fff;letter-spacing:-.03em}
.ai-copy>p:not(.kicker):not(.fineprint){color:#a8b8d2;margin-top:18px;font-size:15.5px}
.checks{margin-top:24px;display:grid;gap:12px}
.checks li{display:flex;align-items:flex-start;gap:10px;color:#cdd9ec;font-size:14.5px}
.checks .icon{width:18px;height:18px;color:#6f97ff;margin-top:2px}
.ai .fineprint{color:#7186a7}
.ai-shot{margin:0;border-radius:16px;overflow:hidden;border:1px solid rgba(255,255,255,.13);box-shadow:0 40px 80px -30px rgba(0,0,0,.6);background:#0f2342}
.ai-shot img{width:100%;height:auto}
.ai-shot figcaption{padding:11px 16px;font-size:12px;color:#8196b6;border-top:1px solid rgba(255,255,255,.08)}

/* channels */
.channels{padding:92px 0;background:#fff}
.leadflow{display:flex;align-items:stretch;justify-content:center;gap:8px;flex-wrap:wrap;margin-top:6px}
.leadstep{flex:1 1 180px;max-width:230px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px 18px;text-align:center;box-shadow:var(--shadow-sm)}
.ls-icon{display:inline-flex;width:42px;height:42px;border-radius:12px;background:var(--brand-soft);color:var(--brand);align-items:center;justify-content:center;margin-bottom:12px}
.leadstep strong{display:block;font-size:15.5px}
.leadstep small{display:block;color:var(--muted);font-size:12.5px;margin-top:4px;line-height:1.5}
.ls-arrow{display:flex;align-items:center;color:#c2cfe4}
.ls-arrow .icon{width:18px;height:18px}

/* security */
.security{padding:92px 0;background:var(--bg);border-top:1px solid #eef2f9;border-bottom:1px solid #eef2f9}
.security-inner{display:grid;grid-template-columns:.85fr 1.15fr;gap:56px;align-items:start}
.policy-links{display:flex;gap:16px;flex-wrap:wrap;margin-top:18px;font-size:14px}
.policy-links a{color:var(--brand-2);border-bottom:1px solid #c9d9fb;padding-bottom:1px}
.sec-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.sec-item{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px}
.sec-item .icon{width:21px;height:21px;color:var(--brand);margin-bottom:12px}
.sec-item h3{font-size:15.5px;margin-bottom:6px}
.sec-item p{color:var(--muted);font-size:13.5px;line-height:1.65}

/* about */
.about{padding:92px 0;background:#fff}
.about-inner{display:grid;grid-template-columns:1fr 400px;gap:56px;align-items:center}
.about-copy h2{font-size:clamp(26px,3.2vw,36px)}
.about-copy p{color:var(--muted);margin-top:16px;font-size:15px}
.contact-card{background:linear-gradient(180deg,#f7faff,#fff);border:1px solid #dce6f6;border-radius:20px;padding:30px;box-shadow:var(--shadow)}
.contact-card h3{font-size:18px;margin-bottom:16px}
.contact-list{display:grid;gap:12px;margin-bottom:20px}
.contact-list li{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--ink-2);line-height:1.65}
.contact-list .icon{width:18px;height:18px;color:var(--brand);margin-top:2px}
.contact-list a:hover{color:var(--brand)}
.btn.full{width:100%}
.contact-note{text-align:center;color:var(--muted-2);font-size:12px;margin-top:12px}

/* cta */
.cta{background:linear-gradient(120deg,#2f5bea,#3468f5 48%,#5b7bff);color:#fff;padding:58px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}
.cta h2{font-size:clamp(24px,3vw,32px);color:#fff}
.cta p{color:#dbe5ff;margin-top:8px;font-size:14.5px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* footer */
.site-footer{background:#081427;color:#9fb0c9;padding:56px 0 26px}
.footer-inner{display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer-brand p{font-size:13px;color:#7f93b0;margin-top:12px}
.footer-brand .brand-text strong{color:#fff}
.footer-brand .brand-text small{color:#6d82a1}
.footer-nav{display:flex;gap:64px;flex-wrap:wrap}
.footer-nav h4{color:#fff;font-size:13px;font-weight:600;margin-bottom:12px;letter-spacing:.04em}
.footer-nav div{display:flex;flex-direction:column;gap:8px;font-size:13px}
.footer-nav a:hover{color:#fff}
.footer-bottom{padding-top:22px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12px;color:#6d82a1}

/* reveal */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.reveal.is-visible{opacity:1;transform:none}

/* focus */
a:focus-visible,button:focus-visible{outline:2px solid #7fa2ff;outline-offset:3px;border-radius:6px}

/* responsive */
@media(max-width:1024px){
  .feature-grid,.pain-grid{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:1fr 1fr}
  .steps li:nth-child(2)::after{display:none}
  .ai-inner,.security-inner,.about-inner{grid-template-columns:1fr;gap:36px}
  .about-inner{gap:32px}
  .contact-card{max-width:520px}
}
@media(max-width:820px){
  section[id]{scroll-margin-top:76px}
  .main-nav{position:fixed;inset:72px 0 auto;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;gap:0;padding:10px 24px 22px;display:none;box-shadow:0 24px 40px -30px rgba(15,37,80,.4)}
  .main-nav.is-open{display:flex}
  .main-nav>a{padding:13px 0;border-bottom:1px solid #f0f4fa;font-size:15px}
  .main-nav>a:not(.nav-cta)::after{display:none}
  .nav-cta{margin-top:14px;text-align:center}
  .nav-toggle{display:flex}
  .header-inner{height:64px}
  .hero{padding:64px 0 40px}
  .section-head{margin-bottom:34px}
  .preview{padding-bottom:64px}
  .pains,.features,.flow,.channels,.security,.about{padding:64px 0}
  .ai{padding:68px 0}
  .footer-nav{gap:40px}
}
@media(max-width:620px){
  .section-head h2{font-size:24px}
  .wrap{width:calc(100% - 36px)}
  .hero h1{font-size:34px}
  .hero h1 em::after{bottom:2px;height:7px}
  .lede{font-size:15px}
  .btn{padding:12px 20px}
  .feature-grid,.pain-grid,.sec-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .steps li::after{display:none}
  .leadflow{flex-direction:column;align-items:stretch}
  .leadstep{max-width:none}
  .ls-arrow{justify-content:center;transform:rotate(90deg);padding:2px 0}
  .shot img{aspect-ratio:auto;object-fit:initial}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .footer-inner{flex-direction:column;gap:30px}
  .footer-nav{gap:32px}
  .footer-bottom{flex-direction:column}
  .preview-tab{padding:9px 10px;font-size:12.5px}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .btn,.feature{transition:none}
}