:root{--ink: #102018;--paper: #eef3f0;--foam: #f7faf8;--jade: #1f6b55;--jade-deep: #134637;--mist: #5d7368;--line: rgba(16, 32, 24, .12);--sand: #b7a07a;--font: "Noto Sans SC", system-ui, sans-serif;--display-zh: "Noto Serif SC", "Songti SC", serif;--display-en: Syne, "Noto Sans SC", sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:var(--font);color:var(--ink);background:var(--paper)}a{color:inherit}button,input{font:inherit}.mk{min-height:100vh}.mk-nav{position:sticky;top:0;z-index:30;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#eef3f0d1;border-bottom:1px solid var(--line)}.mk-nav-inner{max-width:1120px;margin:0 auto;padding:.85rem 1.25rem;display:flex;align-items:center;justify-content:space-between;gap:1rem}.mk-nav-right{display:flex;align-items:center;gap:1rem;flex-wrap:wrap;justify-content:flex-end}.mk-lang{display:inline-flex;align-items:center;gap:.35rem;font-size:.72rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase}.mk-lang button{border:0;background:transparent;color:var(--mist);cursor:pointer;padding:.2rem .15rem}.mk-lang button.active{color:var(--jade-deep);text-decoration:underline;text-underline-offset:3px}.mk-lang span{opacity:.35}.mk-logo{text-decoration:none;display:flex;flex-direction:column;line-height:1.05}.mk-logo-en{font-family:var(--display-en);font-weight:800;letter-spacing:-.04em;font-size:1.15rem}.mk-logo-zh{font-family:var(--display-zh);font-size:.85rem;color:var(--jade-deep)}.mk-nav nav{display:flex;gap:.85rem;align-items:center}.mk-nav 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h2{margin:0;font-family:var(--display-zh);font-size:clamp(1.8rem,4vw,2.5rem)}.mk-section-sub{margin:.55rem 0 0;color:var(--mist);max-width:42ch}.mk-flow{list-style:none;margin:2rem 0 0;padding:0;display:grid;gap:1rem}@media(min-width:860px){.mk-flow{grid-template-columns:repeat(3,1fr)}}.mk-flow li{padding:1.25rem 0 0;border-top:2px solid var(--jade);animation:mk-rise .7s ease both}.mk-flow li:nth-child(2){animation-delay:.08s}.mk-flow li:nth-child(3){animation-delay:.16s}.mk-flow strong{display:block;font-size:1.15rem;margin-bottom:.4rem}.mk-flow span{color:var(--mist);line-height:1.5}.mk-pricing{background:radial-gradient(ellipse at 90% 0%,rgba(31,107,85,.12),transparent 45%),var(--foam)}.mk-plans{margin-top:2rem;display:grid;gap:1rem}@media(min-width:900px){.mk-plans{grid-template-columns:repeat(3,1fr)}}.mk-plan{border:1px solid 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1.5rem;padding:1rem 1.1rem;border:1px solid var(--line);border-radius:12px;background:#fff}.mk-sms-samples ol{margin:.5rem 0 0;padding-left:1.2rem;line-height:1.55;color:var(--mist);font-size:.92rem}