/* Prospect 官网 — 临床诊断风
   白底 + 医疗青(#0f766e) + 留白 + 细线条
   设计文档：docs/superpowers/specs/2026-07-09-website-landing-design.md */

* { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --teal: #0f766e;
    --teal-dark: #115e59;
    --teal-light: #ccfbf1;
    --ink: #0f172a;
    --slate: #475569;
    --slate-light: #94a3b8;
    --bg: #ffffff;
    --bg-soft: #f8fafc;
    --line: #e2e8f0;
    --danger: #dc2626;
    --success: #059669;
}

body {
    font-family: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
    color: var(--ink);
    background: var(--bg);
    line-height: 1.6;
}

h1 { font-size: 2.2rem; font-weight: 800; line-height: 1.25; }
h2 { font-size: 1.6rem; font-weight: 700; text-align: center; }
h3 { font-size: 1.1rem; font-weight: 700; }
.accent { color: var(--teal); }
.muted { color: var(--slate-light); font-size: 0.85rem; }
.sub { color: var(--slate); text-align: center; max-width: 640px; margin: 12px auto; }

/* 按钮 */
.btn {
    display: inline-block; padding: 10px 22px; border-radius: 6px;
    font-size: 0.95rem; font-weight: 600; text-decoration: none; cursor: pointer;
    border: 1px solid transparent; transition: all 0.15s;
}
.btn-primary { background: var(--teal); color: #fff; }
.btn-primary:hover { background: var(--teal-dark); }
.btn-outline { background: #fff; color: var(--ink); border-color: var(--line); }
.btn-outline:hover { border-color: var(--teal); color: var(--teal); }
.btn-block { display: block; width: 100%; text-align: center; }
.btn-lg { font-size: 1.1rem; padding: 14px 32px; }

/* 导航 */
.nav {
    display: flex; justify-content: space-between; align-items: center;
    padding: 16px 5%; border-bottom: 1px solid var(--line);
    position: sticky; top: 0; background: rgba(255,255,255,0.95); z-index: 10;
}
.logo { font-weight: 800; font-size: 1.2rem; color: var(--ink); text-decoration: none; }
.logo span { color: var(--slate-light); font-weight: 400; font-size: 0.85rem; }
.nav-links { display: flex; gap: 24px; align-items: center; }
.nav-links a { color: var(--slate); text-decoration: none; font-size: 0.95rem; }
.nav-links a:hover { color: var(--teal); }

/* Hero */
.hero { text-align: center; padding: 80px 5% 64px; max-width: 900px; margin: 0 auto; }
.eyebrow {
    color: var(--teal); letter-spacing: 2px; font-size: 0.8rem; font-weight: 600;
    text-transform: uppercase; margin-bottom: 16px;
}
.hero h1 { margin-bottom: 16px; }
.hero .sub { font-size: 1.1rem; margin-bottom: 28px; }
.cta-row { display: flex; gap: 12px; justify-content: center; }

/* 通用 section */
.section { padding: 64px 5%; max-width: 1100px; margin: 0 auto; }
.section h2 { margin-bottom: 12px; }

/* 痛点对比 */
.pain .compare { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 32px; }
.compare-card { padding: 24px; border-radius: 8px; }
.compare-card.bad { background: #fef2f2; border-left: 4px solid var(--danger); }
.compare-card.good { background: #f0fdf4; border-left: 4px solid var(--success); }
.tag-bad { color: var(--danger); font-weight: 700; margin-bottom: 8px; }
.tag-good { color: var(--success); font-weight: 700; margin-bottom: 8px; }

/* 三大引擎 */
.engines { background: var(--bg-soft); }
.engine-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 32px; }
.engine-card { background: #fff; border: 1px solid var(--line); border-radius: 8px; padding: 24px; }
.engine-card.highlight { border-color: var(--teal); box-shadow: 0 0 0 1px var(--teal); }
.engine-icon { font-size: 2rem; margin-bottom: 8px; }
.engine-card h3 { margin-bottom: 8px; }
.engine-card p { color: var(--slate); font-size: 0.95rem; }

/* 差异化对比 */
.player-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 32px; }
.player { border-radius: 8px; padding: 24px; text-align: center; }
.player.content-factory { background: #fff7ed; border: 1px solid #fed7aa; }
.player.thermometer { background: #eff6ff; border: 1px solid #bfdbfe; }
.player.prescription { background: #f0fdf4; border: 1px solid var(--teal); box-shadow: 0 0 0 1px var(--teal); }
.player-name { color: var(--slate); margin: 8px 0; font-size: 0.9rem; }
.player-desc { font-size: 0.95rem; margin-bottom: 12px; }
.player-tag { font-size: 0.85rem; color: var(--slate-light); }

/* 体检表单 */
.check { background: var(--bg-soft); }
.check .sub { margin-bottom: 32px; }
.check-form { max-width: 560px; margin: 0 auto; background: #fff; padding: 32px; border-radius: 8px; border: 1px solid var(--line); }
.field { margin-bottom: 18px; }
.field label { display: block; font-weight: 600; margin-bottom: 6px; font-size: 0.9rem; }
.field .req { color: var(--danger); }
.field .opt { color: var(--slate-light); font-weight: 400; }
.field input {
    width: 100%; padding: 10px 14px; border: 1px solid var(--line);
    border-radius: 6px; font-size: 1rem; font-family: inherit;
}
.field input:focus { outline: none; border-color: var(--teal); box-shadow: 0 0 0 2px var(--teal-light); }

/* 体检结果 */
.check-result { max-width: 560px; margin: 24px auto 0; background: #fff; padding: 24px; border-radius: 8px; border: 1px solid var(--line); }
.score-block { text-align: center; margin-bottom: 20px; }
.score-num { font-size: 3rem; font-weight: 800; color: var(--teal); }
.score-label { color: var(--slate); font-size: 0.9rem; }
.root-cause { background: var(--teal-light); padding: 12px 16px; border-radius: 6px; margin-bottom: 16px; font-weight: 600; }
.check-result h3 { margin: 16px 0 8px; }
.weak-list, .sugg-list { list-style: none; padding-left: 0; }
.weak-list li { padding: 8px 0; border-bottom: 1px solid var(--line); }
.weak-label { display: block; font-weight: 600; color: var(--danger); }
.weak-problem { color: var(--slate); font-size: 0.9rem; }
.sugg-list li { padding: 6px 0 6px 20px; position: relative; }
.sugg-list li::before { content: "→"; position: absolute; left: 0; color: var(--teal); font-weight: 700; }
.checking { text-align: center; color: var(--slate); padding: 20px; }
.error { color: var(--danger); text-align: center; padding: 20px; }

/* 底部 CTA */
.final-cta { background: var(--teal); text-align: center; padding: 64px 5%; }
.final-cta h2 { color: #fff; margin-bottom: 24px; }

/* 页脚 */
.footer { background: var(--ink); color: var(--slate-light); padding: 32px 5%; text-align: center; }

/* 响应式 */
@media (max-width: 720px) {
    .nav-links a:not(.btn) { display: none; }
    .pain .compare, .engine-grid, .player-grid { grid-template-columns: 1fr; }
    h1 { font-size: 1.6rem; }
    .cta-row { flex-direction: column; }
}