/* rainbowcircle.ai 公司首页。颜色和 app 一样（鼠尾草绿 + 杏橙），见 src/styles.css 顶部 */
:root {
  --ground: #eef2ea;
  --surface: #ffffff;
  --ink: #233023;
  --body: #3f4d3d;
  --muted: #5f6e5c;
  --line: #cfd8ca;
  --field: #a9b6a4;
  --sign: #ff9e5e;
  --sign-ink: #2a1405;
  --link: #1b5e44;
  --link-hover: #123f2e;
  --ok: #1b7a55;
  --ok-bg: #dcf0e3;
  --bad: #b8322b;
  --bad-bg: #fbe5e3;
  --people-bg: #dce6f4;
  --people-ink: #2b4a78;
  --deep: #233023;
  --deep-ink: #eef2ea;
  --deep-muted: #d5ddd1;
  --deep-link: #ffc29a;
  --foot: #1a241a;
  --foot-ink: #c9d3c5;
  --display: "Barlow Condensed", "Arial Narrow", sans-serif;
  --sans: "Noto Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--ground); color: var(--ink); font-family: var(--sans); font-size: 17px; line-height: 1.55; }
a { color: var(--link); }
a:hover { color: var(--link-hover); }
h1, h2, h3 { margin: 0; }
p, ul, ol { margin: 0; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 24px; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 16px; background: var(--surface); padding: 8px 12px; z-index: 10; }

/* 顶部 */
.top { border-bottom: 1px solid var(--line); }
.nav { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; padding-top: 16px; padding-bottom: 16px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; }
.brand:hover { color: var(--ink); }
.ring { width: 28px; height: 28px; border-radius: 50%; background: conic-gradient(#e2574c, #f2a23a, #f2d43a, #5cb85c, #3a8fd9, #7a5bc7, #e2574c); display: flex; align-items: center; justify-content: center; }
.ring::after { content: ""; width: 18px; height: 18px; border-radius: 50%; background: var(--ground); }
.brand__name { font-family: var(--display); font-weight: 700; font-size: 28px; line-height: 1; }
.links { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 24px; font-size: 16px; font-weight: 500; }
.links a { color: var(--ink); text-decoration: none; }
.links a:hover { text-decoration: underline; }
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 10px 18px; border-radius: 12px; font-weight: 700; text-decoration: none; border: 0; cursor: pointer; font: inherit; font-weight: 700; }
.btn--sign, .links .btn--sign { background: var(--sign); color: var(--sign-ink); }
.btn--sign:hover { color: var(--sign-ink); filter: brightness(0.96); text-decoration: none; }
.btn--line { border: 2px solid var(--ink); color: var(--ink); background: transparent; }
.btn--line:hover { color: var(--ink); background: rgba(35, 48, 35, 0.06); }
.btn--lg { padding: 14px 24px; border-radius: 14px; font-size: 18px; }

/* 首屏 */
.hero { padding-top: 72px; padding-bottom: 80px; display: flex; flex-direction: column; gap: 24px; max-width: 760px; }
.pill { align-self: flex-start; background: var(--people-bg); color: var(--people-ink); font-size: 14px; font-weight: 700; padding: 6px 12px; border-radius: 999px; }
.hero h1 { font-family: var(--display); font-weight: 700; font-size: clamp(48px, 8vw, 76px); line-height: 0.95; letter-spacing: -0.5px; }
.lead { font-size: 20px; color: var(--body); max-width: 34rem; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* 段落区块 */
.band { background: var(--surface); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section { padding-top: 80px; padding-bottom: 80px; display: flex; flex-direction: column; gap: 32px; }
.section h2 { font-family: var(--display); font-weight: 700; font-size: clamp(40px, 6vw, 52px); line-height: 1; }
.steps { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px; }
.step { display: flex; flex-direction: column; gap: 12px; padding: 28px; border-radius: 20px; background: var(--ground); }
.step__n { font-family: var(--display); font-weight: 700; font-size: 44px; line-height: 1; color: var(--link); }
.step h3 { font-size: 21px; }
.step p, .feature p { color: var(--body); }
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 24px; }
.feature { display: flex; flex-direction: column; gap: 10px; }
.feature h3 { font-size: 19px; }
.feature p { font-size: 16px; }
.plans { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 24px; }
.plan { border: 1px solid var(--line); border-radius: 20px; padding: 32px; display: flex; flex-direction: column; gap: 12px; }
.plan--strong { border: 2px solid var(--ink); }
.plan h3 { font-size: 22px; }
.price { display: flex; align-items: baseline; gap: 8px; }
.price b { font-family: var(--display); font-weight: 700; font-size: 56px; line-height: 1; }
.price span { color: var(--muted); }
.tag { align-self: flex-start; background: var(--sign); color: var(--sign-ink); font-size: 14px; font-weight: 700; padding: 3px 10px; border-radius: 999px; }
.plan p { color: var(--body); }
.note { padding: 16px 20px; border-radius: 14px; background: var(--ok-bg); color: var(--link); font-weight: 500; }
.bullets { padding-left: 22px; display: flex; flex-direction: column; gap: 10px; color: var(--body); max-width: 46rem; }
.inline-links { display: flex; flex-wrap: wrap; gap: 8px 24px; font-weight: 500; }

/* 联系 */
.contact { background: var(--deep); color: var(--deep-ink); }
.contact .section { flex-direction: row; flex-wrap: wrap; gap: 48px; }
.contact__text { flex: 1 1 320px; min-width: 0; display: flex; flex-direction: column; gap: 16px; }
.contact__text p { color: var(--deep-muted); }
.contact__text a { color: var(--deep-link); }
.contact__form { flex: 1 1 440px; min-width: 0; }
.form { background: var(--surface); color: var(--ink); border-radius: 20px; padding: 28px; display: flex; flex-direction: column; gap: 16px; }
.form__row { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; }
.form label { display: flex; flex-direction: column; gap: 6px; font-size: 15px; font-weight: 700; }
.form input, .form select, .form textarea { border: 1px solid var(--field); border-radius: 10px; font: inherit; font-size: 16px; font-weight: 400; color: var(--ink); background: var(--surface); }
.form input, .form select { height: 48px; padding: 0 14px; }
.form textarea { padding: 12px 14px; resize: vertical; min-height: 140px; }
.form input:focus, .form select:focus, .form textarea:focus { outline: 2px solid var(--link); outline-offset: 1px; }
.form .btn { height: 52px; border-radius: 14px; font-size: 17px; }
.form .btn[disabled] { opacity: 0.7; cursor: progress; }
.form__fine { font-size: 14px; color: var(--muted); font-weight: 500; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.msg { border-radius: 12px; padding: 12px 14px; font-size: 15px; font-weight: 500; }
.msg--bad { background: var(--bad-bg); color: var(--bad); }
.sent { background: var(--surface); color: var(--ink); border-radius: 20px; padding: 40px 28px; display: flex; flex-direction: column; gap: 12px; align-items: flex-start; }
.sent h3 { font-size: 22px; }
.sent p { color: var(--body); }
[hidden] { display: none !important; }

/* 政策页 */
.doc { max-width: 760px; margin: 0 auto; padding: 56px 24px 80px; display: flex; flex-direction: column; gap: 20px; line-height: 1.6; }
.doc h1 { font-family: var(--display); font-weight: 700; font-size: 56px; line-height: 1; }
.doc h2 { font-size: 22px; margin-top: 16px; }
.doc .updated { color: var(--muted); font-size: 15px; }
.doc ul { padding-left: 22px; display: flex; flex-direction: column; gap: 8px; }

/* 页脚 */
.foot { background: var(--foot); color: var(--foot-ink); font-size: 15px; }
.foot .wrap { padding-top: 32px; padding-bottom: 32px; display: flex; flex-wrap: wrap; gap: 12px 32px; justify-content: space-between; }
.foot a { color: var(--foot-ink); }
.foot a:hover { color: #ffffff; }
.foot__links { display: flex; flex-wrap: wrap; gap: 8px 24px; }