/* =====================================================================
   中小学生心理健康自测站 · styles.css
   日系极简 —— 中性灰白 / 极致留白 / 1px 细线分隔 / 无阴影无渐变
   ===================================================================== */

:root {
  --c-primary: #7e7e63;
  --c-accent: #817891;
  --c-highlight: #80639c;
  --c-bg: #fbfbf8;
  --c-surface: #ffffff;
  --c-text: #2c2c1b;
  --c-muted: #7a7a5c;
  --c-border: #e6e6db;
  --radius: 2px;
  --font: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
}

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

html { -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font);
  background: var(--c-bg);
  color: var(--c-text);
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: inherit; text-decoration: none; }
button { font-family: var(--font); }

::selection { background: rgba(128, 99, 156, 0.16); }

.wrap { max-width: 760px; margin: 0 auto; padding: 0 24px; }

/* ---------------- 头部 / 底部 ---------------- */

.site-head { border-bottom: 1px solid var(--c-border); background: var(--c-bg); }
.head-inner {
  display: flex; align-items: baseline; justify-content: space-between;
  padding: 22px 24px;
}
.brand { font-size: 15px; font-weight: 600; letter-spacing: 0.14em; color: var(--c-primary); transition: color .2s ease; }
.brand:hover { color: var(--c-text); }
.head-tag { font-size: 12px; letter-spacing: 0.1em; color: var(--c-muted); }

.site-foot { margin-top: 96px; border-top: 1px solid var(--c-border); background: var(--c-surface); }
.site-foot .wrap { padding-top: 40px; padding-bottom: 56px; }
.site-foot p { font-size: 13px; font-weight: 600; letter-spacing: 0.12em; color: var(--c-primary); }
.foot-note {
  margin-top: 8px;
  font-size: 12.5px; font-weight: 400; letter-spacing: 0.05em;
  color: var(--c-muted);
}

/* ---------------- 首页 Hero ---------------- */

.hero { padding: 96px 0 0; }

.kicker {
  font-size: 12px; font-weight: 600;
  letter-spacing: 0.24em; color: var(--c-primary);
  margin-bottom: 28px;
}

.hero h1 {
  font-size: clamp(34px, 6vw, 52px);
  font-weight: 700; line-height: 1.35; letter-spacing: 0.02em;
}

.lede {
  margin-top: 30px;
  color: var(--c-muted); font-size: 16px; line-height: 2.1;
}

.privacy-note {
  margin-top: 46px; padding: 16px 20px;
  border: 1px solid var(--c-border); border-radius: var(--radius);
  background: var(--c-surface); color: var(--c-muted);
  font-size: 13.5px; line-height: 1.9;
  display: flex; gap: 14px; align-items: flex-start;
}
.privacy-dot { width: 8px; height: 8px; margin-top: 9px; border-radius: 50%; background: var(--c-primary); flex: none; }
.privacy-note b { color: var(--c-text); font-weight: 600; }

/* ---------------- 区块标题 ---------------- */

.section-head { padding: 78px 0 34px; border-top: 1px solid var(--c-border); }
.section-head .kicker { margin-bottom: 14px; }
.section-head h2 { font-size: 24px; font-weight: 700; letter-spacing: 0.04em; }
.sub { margin-top: 12px; color: var(--c-muted); font-size: 14.5px; }

/* ---------------- 自测量表列表 ---------------- */

.scale-list { display: grid; gap: 14px; }

.scale-card {
  display: block; padding: 28px 30px 24px;
  background: var(--c-surface);
  border: 1px solid var(--c-border); border-radius: var(--radius);
  transition: border-color .2s ease;
}
.scale-card:hover { border-color: var(--c-primary); }

.scale-top { display: flex; align-items: center; justify-content: space-between; }
.scale-num { font-size: 12px; font-weight: 600; letter-spacing: 0.22em; color: var(--c-accent); }
.scale-tag {
  font-size: 12px; letter-spacing: 0.06em;
  color: var(--c-primary); border: 1px solid var(--c-border);
  border-radius: var(--radius); padding: 2px 10px;
}

.scale-name { margin-top: 14px; font-size: 20px; font-weight: 700; letter-spacing: 0.04em; }
.scale-desc { margin-top: 8px; color: var(--c-muted); font-size: 14.5px; }

.scale-foot {
  margin-top: 22px; padding-top: 16px;
  border-top: 1px solid var(--c-border);
  display: flex; align-items: center; justify-content: space-between;
  font-size: 13px; color: var(--c-muted); letter-spacing: 0.04em;
}
.scale-go { color: var(--c-highlight); font-weight: 600; letter-spacing: 0.08em; }
.scale-card:hover .scale-go { color: var(--c-text); }

/* ---------------- 日常建议 ---------------- */

.tip-list { list-style: none; }
.tip-list li {
  padding: 18px 0;
  border-top: 1px solid var(--c-border);
  display: flex; gap: 24px;
  color: var(--c-muted); font-size: 15px; line-height: 1.9;
}
.tip-list li:last-child { border-bottom: 1px solid var(--c-border); }
.tip-list li span {
  flex: none; width: 90px;
  color: var(--c-text); font-weight: 600; font-size: 15px; letter-spacing: 0.08em;
}

/* ---------------- 专业求助 ---------------- */

.help-list { list-style: none; }
.help-list li { padding: 16px 0; border-top: 1px solid var(--c-border); line-height: 1.7; }
.help-list li:last-child { border-bottom: 1px solid var(--c-border); }
.help-list b {
  display: inline-block; min-width: 168px;
  color: var(--c-highlight); font-weight: 700; font-size: 15px; letter-spacing: 0.02em;
}
.help-list span { color: var(--c-muted); font-size: 14px; }

.urgent {
  margin-top: 24px; padding: 14px 18px;
  background: var(--c-surface);
  border: 1px solid var(--c-border); border-radius: var(--radius);
  font-size: 13.5px; color: var(--c-text); line-height: 1.9;
}

/* ---------------- 按钮 ---------------- */

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 13px 32px; min-height: 46px;
  border: 1px solid var(--c-border); border-radius: var(--radius);
  background: var(--c-surface); color: var(--c-text);
  font-size: 14.5px; letter-spacing: 0.08em; cursor: pointer;
  transition: border-color .2s ease, background .2s ease, color .2s ease, opacity .2s ease;
}
.btn:hover { border-color: var(--c-primary); }

.btn-primary {
  background: var(--c-highlight); border-color: var(--c-highlight); color: #ffffff;
}
.btn-primary:hover { background: #6d5489; border-color: #6d5489; color: #ffffff; }

.btn:disabled { opacity: 0.32; cursor: default; }
.btn:disabled:hover { border-color: var(--c-border); background: var(--c-surface); color: var(--c-text); }

/* ---------------- 问卷页 ---------------- */

.q-wrap { padding-top: 44px; padding-bottom: 88px; }

.q-top {
  display: flex; align-items: baseline; justify-content: space-between;
  padding-bottom: 20px;
}
.back { font-size: 13px; letter-spacing: 0.05em; color: var(--c-muted); transition: color .2s ease; }
.back:hover { color: var(--c-text); }
.q-meta { font-size: 13px; letter-spacing: 0.08em; color: var(--c-muted); }

.progress { height: 2px; background: var(--c-border); margin-bottom: 64px; }
.progress-bar { height: 100%; width: 0; background: var(--c-primary); transition: width .35s ease; }

.q-step { font-size: 12px; font-weight: 600; letter-spacing: 0.22em; color: var(--c-accent); }

.q-question h1 {
  margin-top: 20px;
  font-size: clamp(22px, 3.6vw, 30px);
  font-weight: 700; line-height: 1.55; letter-spacing: 0.01em;
}

.q-note { margin-top: 16px; color: var(--c-muted); font-size: 13.5px; }

.q-anim { animation: qin .35s ease; }
@keyframes qin {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: none; }
}

.q-opts { margin-top: 44px; display: grid; gap: 12px; }

.opt {
  position: relative;
  display: block; width: 100%; text-align: left;
  padding: 18px 56px 18px 22px;
  background: var(--c-surface);
  border: 1px solid var(--c-border); border-radius: var(--radius);
  font-size: 16px; letter-spacing: 0.03em; color: var(--c-text); cursor: pointer;
  transition: border-color .2s ease, background .2s ease;
}
.opt::before {
  content: ""; position: absolute; left: -1px; top: -1px; bottom: -1px; width: 2px;
  background: transparent; transition: background .2s ease;
}
.opt:hover { border-color: var(--c-primary); }
.opt.selected { border-color: var(--c-highlight); background: rgba(128, 99, 156, 0.05); }
.opt.selected::before { background: var(--c-highlight); }
.opt .opt-key {
  position: absolute; right: 22px; top: 50%; transform: translateY(-50%);
  font-size: 13px; letter-spacing: 0.1em; color: var(--c-border);
}
.opt.selected .opt-key { color: var(--c-highlight); }

.q-nav { margin-top: 56px; display: flex; gap: 12px; justify-content: space-between; }

.privacy-line { margin-top: 30px; text-align: center; font-size: 12px; letter-spacing: 0.06em; color: var(--c-muted); }

/* ---------------- 结果页 ---------------- */

.result-wrap { padding-top: 80px; padding-bottom: 40px; }

.result-title { font-size: clamp(26px, 4.6vw, 36px); font-weight: 700; letter-spacing: 0.02em; }

.result-score { margin-top: 40px; font-size: 64px; font-weight: 700; line-height: 1; letter-spacing: 0.02em; }
.result-score small { font-size: 22px; font-weight: 400; color: var(--c-muted); margin-left: 8px; }

.result-level {
  margin-top: 18px;
  font-size: 17px; font-weight: 600; letter-spacing: 0.12em; color: var(--c-highlight);
}

.result-meta { margin-top: 26px; font-size: 13px; letter-spacing: 0.06em; color: var(--c-muted); }

.result-text {
  margin-top: 46px; padding: 28px 30px;
  background: var(--c-surface);
  border: 1px solid var(--c-border); border-radius: var(--radius);
  font-size: 15.5px; line-height: 2.05;
}

.critical {
  margin-top: 40px; padding: 24px 28px;
  background: var(--c-surface);
  border: 1px solid var(--c-highlight); border-radius: var(--radius);
}
.critical h3 { font-size: 16px; font-weight: 700; letter-spacing: 0.06em; color: var(--c-highlight); }
.critical p { margin-top: 12px; font-size: 14.5px; line-height: 2.05; }

.result-section { margin-top: 60px; }
.result-section h2 {
  font-size: 18px; font-weight: 700; letter-spacing: 0.05em;
  padding-bottom: 14px; border-bottom: 1px solid var(--c-border);
}

.advice-list { list-style: none; counter-reset: adv; }
.advice-list li {
  counter-increment: adv;
  position: relative; padding: 16px 0 16px 44px;
  border-bottom: 1px solid var(--c-border);
  color: var(--c-muted); font-size: 15px; line-height: 1.9;
}
.advice-list li::before {
  content: counter(adv, decimal-leading-zero);
  position: absolute; left: 0; top: 16px;
  font-size: 12px; letter-spacing: 0.15em; color: var(--c-primary);
}

.review-list { list-style: none; }
.review-list li {
  display: flex; gap: 18px; align-items: flex-start;
  padding: 15px 0; border-bottom: 1px solid var(--c-border);
  font-size: 14.5px; line-height: 1.8;
}
.review-list .rn { flex: none; width: 34px; font-size: 12px; letter-spacing: 0.12em; color: var(--c-accent); margin-top: 4px; }
.review-list .qt { flex: 1; }
.review-list .qa { flex: none; min-width: 64px; text-align: right; font-size: 13px; color: var(--c-highlight); letter-spacing: 0.05em; }

.result-help { list-style: none; }
.result-help li { padding: 15px 0; border-bottom: 1px solid var(--c-border); }
.result-help b { display: inline-block; min-width: 168px; color: var(--c-highlight); font-weight: 700; font-size: 15px; }
.result-help span { color: var(--c-muted); font-size: 14px; }

.result-actions { margin-top: 56px; display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------------- 空状态 ---------------- */

.empty { padding: 110px 0 60px; text-align: center; }
.empty .kicker { margin-bottom: 22px; }
.empty h1 { font-size: 30px; font-weight: 700; letter-spacing: 0.02em; }
.empty p { margin-top: 18px; color: var(--c-muted); }
.empty .result-actions { margin-top: 44px; justify-content: center; }

/* ---------------- 响应式 ---------------- */

@media (max-width: 560px) {
  .hero { padding-top: 64px; }
  .section-head { padding-top: 56px; }
  .scale-card { padding: 22px 20px 20px; }
  .tip-list li { flex-direction: column; gap: 6px; }
  .help-list b { display: block; min-width: 0; margin-bottom: 2px; }
  .q-top { flex-direction: column; align-items: flex-start; gap: 8px; }
  .q-nav .btn { flex: 1; padding: 13px 16px; }
  .opt { padding: 16px 48px 16px 18px; }
  .result-text, .critical { padding: 22px 20px; }
  .result-actions .btn { flex: 1; min-width: 0; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}