:root{
    --bg:#F5FAF8;
    --card:#FFFFFF;
    --ink:#1F3A34;
    --ink-soft:#4A6B63;
    --teal:#5B9E8C;
    --teal-deep:#3F7E6E;
    --blue:#7FB4C4;
    --line:#DCE9E4;
    --tint:#EBF4F0;
    --shadow:0 8px 30px rgba(63,126,110,.08);
  }
  @font-face{
    font-family:"Ma Shan Zheng";
    src:url("assets/fonts/MaShanZheng-Regular.ttf") format("truetype");
    font-display:swap;
  }
  *{margin:0;padding:0;box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{
    background:var(--bg);
    color:var(--ink);
    font-family:"Noto Sans SC",-apple-system,sans-serif;
    font-size:17px;
    font-weight:400;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
  }
  .wrap{max-width:1200px;margin:0 auto;padding:0 32px}
  .serif{font-family:"Noto Serif SC",serif}

  /* ---------- HERO ---------- */
  header{
    background:
      radial-gradient(120% 90% at 85% 0%, rgba(127,180,196,.18) 0%, rgba(127,180,196,0) 55%),
      linear-gradient(160deg,#EFF7F3 0%, #F5FAF8 100%);
    border-bottom:1px solid var(--line);
    padding:16px 0 60px;
    text-align:center;
  }
  .brandbar{
    display:flex;align-items:center;justify-content:space-between;
    padding:8px 0 0;
  }
  .logo{
    font-family:"Ma Shan Zheng",cursive;
    font-weight:400;font-size:40px;letter-spacing:.28em;
    color:var(--teal-deep);
    padding-left:.28em;display:inline-block;
    transform:translateY(5px) scale(1.6);transform-origin:left center;
  }
  .wechat-tag{
    font-size:13px;color:var(--ink-soft);
    border:1px solid var(--line);border-radius:999px;
    padding:6px 16px;background:#fff;
  }
  .wechat-tag b{color:var(--teal-deep);font-weight:500}
  .brand-actions{display:flex;align-items:center;gap:10px;transform:translateY(10px)}
  .language-switcher{display:flex;padding:3px;border:1px solid var(--line);border-radius:999px;background:#fff}
  .language-switcher button{border:0;border-radius:999px;background:transparent;color:var(--ink-soft);cursor:pointer;font:500 14px/1 "Noto Sans SC",sans-serif;padding:7px 10px;transition:.2s}
  .language-switcher button[aria-pressed="true"]{background:var(--teal);color:#fff}
  .eyebrow{
    font-size:20px;letter-spacing:.34em;color:var(--teal);font-weight:700;
    text-transform:uppercase;margin-bottom:22px;
  }
  h1{
    font-family:"Noto Serif SC",serif;
    font-weight:700;
    font-size:clamp(36px,6vw,56px);
    letter-spacing:.04em;line-height:1.3;
    color:var(--ink);
  }
  .hero-sub{
    margin:22px auto 0;max-width:560px;
    font-size:clamp(19px,2.4vw,22px);color:var(--ink-soft);font-weight:400;
  }
  .hero-tags{
    display:flex;flex-wrap:wrap;gap:0;justify-content:center;
    margin:26px 0 0;
  }
  .hero-tags span{
    font-size:22px;color:var(--teal-deep);padding:0 14px;font-weight:700;
    line-height:1.25;
  }
  .hero-tags span::before{
    content:"#";
    color:var(--teal);font-size:1.1em;font-weight:700;
    margin-right:2px;
  }
  .cta-row{margin-top:28px;display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
  .btn{
    display:inline-block;text-decoration:none;font-size:17px;
    padding:14px 30px;border-radius:12px;transition:.2s;font-weight:700;
  }
  .btn-primary{background:var(--teal);color:#fff;box-shadow:var(--shadow)}
  .btn-primary:hover{background:var(--teal-deep);transform:translateY(-1px)}
  .btn-ghost{background:#fff;color:var(--teal-deep);border:1px solid var(--line)}
  .btn-ghost:hover{border-color:var(--teal)}

  /* ---------- SECTION SHELL ---------- */
  section{padding:56px 0}
  .sec-head{text-align:center;margin-bottom:34px}
  .sec-head .kick{font-size:20px;letter-spacing:.3em;color:var(--blue);text-transform:uppercase;margin-bottom:12px;font-weight:700}
  .sec-head h2{font-family:"Noto Serif SC",serif;font-weight:700;font-size:clamp(28px,4vw,36px);letter-spacing:.03em}
  .sec-head p{margin-top:12px;color:var(--ink-soft);font-weight:400}

  /* ---------- WHY ---------- */
  .why{background:linear-gradient(180deg,#fff 0%,var(--bg) 100%);border-block:1px solid var(--line)}
  .why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
  .why-card{
    background:var(--tint);border-radius:16px;padding:24px 26px;text-align:center;
  }
  .why-card .q{font-family:"Noto Serif SC",serif;font-size:28px;color:var(--teal-deep);margin-bottom:10px}
  .why-card p{font-size:16px;color:var(--ink-soft);font-weight:400}
  .why-lead{text-align:center;max-width:620px;margin:0 auto 40px;color:var(--ink-soft);font-size:20px}
  .why-lead b{color:var(--ink);font-weight:500}

  /* ---------- PRICING ---------- */
  .price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:stretch}
  .plan{
    background:var(--card);border:1px solid var(--line);border-radius:20px;
    padding:28px 28px;display:flex;flex-direction:column;position:relative;
    transition:.25s;box-shadow:0 2px 8px rgba(63,126,110,.04);
  }
  .plan:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--teal)}
  .plan.featured{border:1.5px solid var(--teal);box-shadow:var(--shadow)}
  .featured-label{
    position:absolute;top:-13px;left:50%;transform:translateX(-50%);
    background:var(--teal);color:#fff;font-size:14px;letter-spacing:.14em;
    padding:5px 16px;border-radius:999px;white-space:nowrap;
  }
  .plan-name{font-family:"Noto Serif SC",serif;font-size:22px;font-weight:700;letter-spacing:.02em}
  .plan-desc{font-size:17px;color:var(--ink-soft);font-weight:400;margin-top:8px;min-height:52px}
  .plan-price{margin:22px 0 6px;display:flex;align-items:baseline;gap:4px}
  .plan-price .num{font-size:51px;font-weight:700;color:var(--teal-deep);line-height:1;font-family:"Noto Sans SC"}
  .plan-price .unit{font-size:22px;color:var(--ink-soft)}
  .plan-meta{display:flex;gap:16px;font-size:16px;color:var(--ink-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:12px 0;margin-bottom:20px}
  .plan-meta div{flex:1}
  .plan-meta b{display:block;color:var(--ink);font-weight:500;font-size:16px}
  .feat{list-style:none;flex:1;margin-bottom:24px}
  .feat li{font-size:16px;padding:7px 0 7px 26px;position:relative;color:var(--ink)}
  .feat li::before{content:"";position:absolute;left:0;top:14px;width:14px;height:8px;border-left:2px solid var(--teal);border-bottom:2px solid var(--teal);transform:rotate(-45deg)}
  .feat .group{font-family:"Noto Serif SC",serif;font-size:17px;color:var(--teal-deep);padding:12px 0 4px;font-weight:700;letter-spacing:.05em}
  .feat .group::before{display:none}
  .plan .btn{width:100%;text-align:center}

  /* ---------- FIT / DELIVER ---------- */
  .fit{background:var(--tint);border-block:1px solid var(--line)}
  .fit-grid{display:grid;grid-template-columns:repeat(2,minmax(0,364px));justify-content:center;gap:22px}
  .fit-card{background:#fff;border-radius:16px;padding:26px 32px;border:1px solid var(--line)}
  .fit-card h3{font-family:"Noto Serif SC",serif;font-size:21px;font-weight:700;margin-bottom:16px;color:var(--ink)}
  .fit-card ul{list-style:none}
  .fit-card li{font-size:16px;padding:6px 0 6px 24px;position:relative;color:var(--ink-soft)}
  .fit-card li::before{content:"✓";position:absolute;left:0;color:var(--teal);font-weight:700}

  /* ---------- CONTACT ---------- */
  .contact{text-align:center;background:linear-gradient(160deg,#EFF7F3,#F5FAF8);border-top:1px solid var(--line)}
  .contact h2{font-family:"Noto Serif SC",serif;font-size:clamp(28px,4vw,36px);font-weight:700;letter-spacing:.03em}
  html[lang="en"] h1,
  html[lang="en"] .sec-head h2,
  html[lang="en"] .why-card .q,
  html[lang="en"] .plan-name,
  html[lang="en"] .feat .group,
  html[lang="en"] .fit-card h3,
  html[lang="en"] .contact h2{
    font-family:Georgia,"Times New Roman",serif;
    letter-spacing:normal;
  }
  .contact p{color:var(--ink-soft);margin-top:14px;font-weight:400}
  .contact-cards{display:flex;gap:18px;justify-content:center;flex-wrap:wrap;margin-top:28px}
  .cc{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px 40px;min-width:200px}
  .contact-icon{display:block;width:28px;height:28px;margin:0 auto 10px;object-fit:cover}
  .cc .lbl{font-size:16px;letter-spacing:.2em;color:var(--blue);text-transform:uppercase;margin-bottom:8px}
  .cc .val{font-size:22px;font-weight:700;color:var(--teal-deep);font-family:"Noto Sans SC"}

  footer{text-align:center;padding:30px 0;border-top:1px solid var(--line);color:var(--ink-soft);font-size:15px;font-weight:400}
  footer .fl{font-family:"Ma Shan Zheng",cursive;font-weight:400;letter-spacing:.28em;color:var(--teal-deep);font-size:26px;padding-left:.28em}
  .footer-description{margin-top:10px}
  .copyright{margin-top:6px;font-size:13px}
  body,
  .language-switcher button,
  .plan-price .num,
  .cc .val{
    font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,sans-serif;
  }
  .serif,
  h1,
  .sec-head h2,
  .why-card .q,
  .plan-name,
  .feat .group,
  .fit-card h3,
  .contact h2{
    font-family:"Songti SC","SimSun","Noto Serif SC",serif;
  }
  .logo,
  footer .fl{font-family:"Ma Shan Zheng",cursive}

  @media(max-width:820px){
    .why-grid,.price-grid{grid-template-columns:1fr}
    .fit-grid{grid-template-columns:1fr}
    .plan.featured{order:-1}
    section{padding:42px 0}
    .brandbar{align-items:flex-start}
    .logo{font-size:34px;transform:translateY(2px) scale(1.15)}
    .brand-actions{flex-direction:column;align-items:flex-end}
  }
  @media(max-width:480px){
    .wrap{padding:0 20px}
  }
  @media (prefers-reduced-motion:reduce){*{transition:none!important}}