:root {
  --persimmon: #F2600C;
  --persimmon-soft: #FDE7DA;
  --ink: #1B2431;
  --ink2: #6B7484;
  --paper: #FAF6F0;
  --surface: #FFFFFF;
  --line: #E8E1D6;
  --chip: #F4EEE4;
  --bamboo: #2E7D5B;
  --bamboo-soft: #E3F0EA;
  --alert: #D93B2B;
  --alert-soft: #F9E1DE;
  --radius: 18px;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 16px/1.7 "HarmonyOS Sans SC", -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}
a { color: inherit; }
img { max-width: 100%; display: block; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 20px; }

/* header */
.top { position: sticky; top: 0; z-index: 10; background: rgba(250, 246, 240, .92); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.top .wrap { display: flex; align-items: center; height: 60px; gap: 10px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 700; font-size: 18px; }
.brand img { width: 32px; height: 32px; border-radius: 8px; }
.brand small { color: var(--persimmon); font-size: 11px; letter-spacing: 2px; font-weight: 700; }
.top nav { margin-left: auto; display: flex; gap: 22px; font-size: 14px; }
.top nav a { text-decoration: none; color: var(--ink2); }
.top nav a:hover { color: var(--ink); }

/* hero */
.hero { padding: 72px 0 56px; }
.hero .wrap { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; }
.slogan { font-size: clamp(36px, 6vw, 60px); line-height: 1.2; font-weight: 800; margin: 0 0 18px; letter-spacing: 1px; }
.slogan em { font-style: normal; color: var(--persimmon); }
.lead { font-size: 18px; color: var(--ink2); margin: 0 0 28px; max-width: 34em; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 22px; border-radius: 999px; font-weight: 700; text-decoration: none; font-size: 15px; }
.btn.primary { background: var(--persimmon); color: #fff; }
.btn.ghost { background: var(--chip); color: var(--ink); }
.note { font-size: 13px; color: var(--ink2); }

/* phone mock */
.phone { width: min(340px, 100%); margin: 0 auto; background: var(--paper); border: 10px solid var(--ink); border-radius: 44px; padding: 22px 14px 18px; box-shadow: 0 30px 60px -30px rgba(27, 36, 49, .45); }
.phone .bar { display: flex; align-items: center; gap: 8px; font-weight: 800; font-size: 19px; margin: 4px 6px 12px; }
.phone .bar img { width: 20px; height: 20px; border-radius: 5px; }
.phone .bar span { margin-left: auto; font-size: 11px; font-weight: 500; color: var(--bamboo); }
.task { display: flex; gap: 10px; background: var(--surface); border-radius: 16px; padding: 12px; margin-bottom: 9px; }
.tile { flex: none; width: 42px; height: 42px; border-radius: 11px; display: flex; flex-direction: column; align-items: center; justify-content: center; font-weight: 800; font-size: 15px; line-height: 1.1; }
.tile small { font-size: 9px; font-weight: 500; }
.tile.q1 { background: var(--alert-soft); color: var(--alert); }
.tile.q2 { background: var(--persimmon-soft); color: var(--persimmon); }
.tile.q4 { background: var(--chip); color: var(--ink2); }
.task b { display: block; font-weight: 500; font-size: 14px; line-height: 1.4; }
.task i { font-style: normal; font-size: 11px; color: var(--ink2); }
.task i .r { color: var(--bamboo); }
.task .pin { margin-left: auto; color: var(--persimmon); font-size: 13px; }
.phone .tabs { display: flex; justify-content: space-around; margin-top: 12px; font-size: 11px; color: var(--ink2); }
.phone .tabs .on { color: var(--persimmon); font-weight: 700; }

/* sections */
section { padding: 64px 0; }
section.alt { background: var(--surface); }
h2 { font-size: clamp(26px, 4vw, 34px); margin: 0 0 10px; }
.sub { color: var(--ink2); margin: 0 0 36px; }
.grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.grid.three { grid-template-columns: repeat(3, 1fr); }
.card { background: var(--surface); border-radius: var(--radius); padding: 20px; }
section.alt .card { background: var(--paper); }
.card .ic { width: 40px; height: 40px; border-radius: 12px; background: var(--persimmon-soft); color: var(--persimmon); display: flex; align-items: center; justify-content: center; font-size: 20px; margin-bottom: 12px; }
.card h3 { margin: 0 0 6px; font-size: 17px; }
.card p { margin: 0; color: var(--ink2); font-size: 14px; }

/* promise */
.promise { background: var(--ink); color: #fff; border-radius: 28px; padding: 44px; display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.promise h2 { color: #fff; }
.promise p { color: #C9CED6; margin: 0; }
.promise ul { margin: 0; padding: 0; list-style: none; }
.promise li { padding: 10px 0; border-bottom: 1px solid rgba(255, 255, 255, .12); color: #E6E9EE; font-size: 15px; }
.promise li::before { content: "✓"; color: var(--persimmon); font-weight: 800; margin-right: 10px; }

/* three lines */
.lines { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; text-align: center; }
.lines div { font-size: 20px; font-weight: 700; padding: 26px 12px; background: var(--surface); border-radius: var(--radius); }
.lines div em { font-style: normal; color: var(--persimmon); }

/* footer */
footer { padding: 36px 0 48px; color: var(--ink2); font-size: 13px; border-top: 1px solid var(--line); }
footer .wrap { display: flex; flex-wrap: wrap; gap: 8px 22px; align-items: center; }
footer a { text-decoration: none; }
footer a:hover { color: var(--ink); }

/* article (privacy) */
.article { max-width: 780px; margin: 0 auto; padding: 40px 20px 72px; font-size: 15px; line-height: 1.8; }
.article h1 { font-size: 28px; margin: 0 0 6px; }
.article h2 { font-size: 18px; margin: 32px 0 10px; color: var(--persimmon); }
.article .meta { color: var(--ink2); font-size: 13px; }
.article table { width: 100%; border-collapse: collapse; margin: 8px 0; font-size: 14px; background: var(--surface); border-radius: 12px; overflow: hidden; }
.article th, .article td { text-align: left; vertical-align: top; padding: 10px; border-bottom: 1px solid var(--line); }
.article th { color: var(--ink2); font-weight: 500; background: var(--chip); }
.tablewrap { overflow-x: auto; }

@media (max-width: 860px) {
  .hero .wrap { grid-template-columns: 1fr; gap: 36px; }
  .grid { grid-template-columns: repeat(2, 1fr); }
  .grid.three, .lines, .promise { grid-template-columns: 1fr; }
  .promise { padding: 28px; }
  .top nav { gap: 14px; }
  .top nav .hide-sm { display: none; }
}