:root {
  --bg: #ffffff; --soft: #f6f7f9; --card: #ffffff; --border: #e5e8ec;
  --fg: #1a1d21; --dim: #6b7280; --accent: #0f6bb5; --accent-soft: #e8f1fa;
  --green: #128c4a;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body { background: var(--bg); color: var(--fg); font-family: "Segoe UI", system-ui, -apple-system, sans-serif; line-height: 1.65; }
.wrap { max-width: 1020px; margin: 0 auto; padding: 0 24px; }
header { padding: 20px 0; display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--border); }
.logo { font-weight: 800; font-size: 22px; letter-spacing: -0.3px; text-decoration: none; color: var(--fg); }
.logo .cn { display: block; font-size: 10px; font-weight: 600; letter-spacing: 4px; color: var(--accent); margin-top: 2px; }
nav a { color: var(--dim); text-decoration: none; margin-left: 22px; font-size: 14px; font-weight: 500; }
nav a:hover, nav a.active { color: var(--fg); }
.hero { padding: 84px 0 64px; text-align: center; }
.hero .cn { color: var(--accent); font-weight: 700; letter-spacing: 6px; font-size: 15px; margin-bottom: 18px; }
.hero h1 { font-size: 46px; letter-spacing: -1px; margin-bottom: 16px; }
.hero p { color: var(--dim); font-size: 17px; max-width: 640px; margin: 0 auto 32px; }
.page-head { padding: 56px 0 20px; text-align: center; }
.page-head .cn { color: var(--accent); font-weight: 700; letter-spacing: 6px; font-size: 14px; margin-bottom: 14px; }
.page-head h1 { font-size: 38px; letter-spacing: -0.8px; margin-bottom: 12px; }
.page-head p { color: var(--dim); font-size: 16px; max-width: 620px; margin: 0 auto; }
.btn { display: inline-block; background: var(--accent); color: #fff; font-weight: 700; padding: 13px 28px; border-radius: 10px; text-decoration: none; margin: 6px; box-shadow: 0 2px 8px rgba(15,107,181,.25); }
.btn.ghost { background: var(--bg); color: var(--fg); border: 1px solid var(--border); box-shadow: none; }
.btn.wa { background: var(--green); box-shadow: 0 2px 8px rgba(18,140,74,.25); }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin: 48px 0; }
.step { background: var(--soft); border-radius: 14px; padding: 26px; }
.step .n { color: var(--accent); font-weight: 800; font-size: 22px; }
.step h3 { margin: 10px 0 6px; font-size: 16px; }
.step p { color: var(--dim); font-size: 14px; }
h2.section { margin: 56px 0 22px; font-size: 28px; letter-spacing: -0.5px; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.grid.two { grid-template-columns: repeat(2, 1fr); }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 22px; display: flex; flex-direction: column; transition: box-shadow .15s; }
.card:hover { box-shadow: 0 6px 20px rgba(0,0,0,.07); }
.card .tag { font-size: 12px; font-weight: 700; color: var(--accent); background: var(--accent-soft); border-radius: 20px; padding: 3px 12px; align-self: flex-start; }
.card h3 { font-size: 16px; margin: 12px 0 6px; }
.card .spec { color: var(--dim); font-size: 13.5px; flex: 1; }
.card .price { font-size: 19px; font-weight: 800; margin-top: 12px; }
.card .price small { color: var(--dim); font-weight: 400; font-size: 12.5px; }
.card ul { list-style: none; margin-top: 8px; }
.card li { color: var(--dim); font-size: 14px; padding: 5px 0; border-bottom: 1px dashed var(--border); }
.card li:last-child { border-bottom: none; }
.card li::before { content: "· "; color: var(--accent); font-weight: 800; }
.notice { background: var(--accent-soft); border: 1px solid #c9dff5; border-radius: 12px; padding: 18px 22px; margin: 24px 0; font-size: 14.5px; }
.notice strong { color: var(--accent); }
.faq { margin: 16px 0 64px; }
.faq details { background: var(--soft); border-radius: 12px; padding: 16px 20px; margin-bottom: 10px; }
.faq summary { cursor: pointer; font-weight: 600; }
.faq p { color: var(--dim); font-size: 14px; margin-top: 8px; }
footer { border-top: 1px solid var(--border); padding: 26px 0 44px; text-align: center; color: var(--dim); font-size: 13px; }
footer a { color: var(--dim); }
footer .brand { font-size: 15px; color: var(--fg); font-weight: 700; letter-spacing: 1px; margin-bottom: 4px; }
@media (max-width: 720px) { .grid, .steps, .grid.two { grid-template-columns: 1fr; } .hero h1 { font-size: 34px; } .page-head h1 { font-size: 28px; } }