/* XTest · 现代简洁设计系统（移动优先） */
:root{
  --bg:#f6f6f8; --card:#ffffff; --card-2:#fafafc;
  --text:#18181f; --muted:#70707c; --line:#e9e9f0;
  --brand:#6455f0; --brand-2:#9b7bff; --brand-ink:#4f3ed9;
  --brand-soft:#efedff; --brand-soft-2:#f6f4ff;
  --ok:#0fa968; --ok-soft:#e6f7ef;
  --warn:#d97706; --warn-soft:#fdf3e3;
  --danger:#e0444b; --danger-soft:#fdecec;
  --shadow:0 1px 2px rgba(20,20,40,.05),0 8px 28px rgba(20,20,40,.07);
  --shadow-lg:0 2px 6px rgba(20,20,40,.06),0 18px 50px rgba(20,20,40,.12);
  --r:16px; --r-lg:22px;
  --maxw:1080px;
}
@media (prefers-color-scheme: dark){
  :root{
    --bg:#0d0d12; --card:#15151c; --card-2:#191922;
    --text:#ededf2; --muted:#9b9ba8; --line:#262633;
    --brand:#8f7dff; --brand-2:#b39aff; --brand-ink:#a99aff;
    --brand-soft:#232045; --brand-soft-2:#1c1a33;
    --ok:#34d399; --ok-soft:#0d2b20;
    --warn:#fbbf24; --warn-soft:#2d2110;
    --danger:#f87171; --danger-soft:#331717;
    --shadow:0 1px 2px rgba(0,0,0,.4),0 10px 32px rgba(0,0,0,.45);
    --shadow-lg:0 2px 8px rgba(0,0,0,.5),0 22px 60px rgba(0,0,0,.55);
  }
}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  font-family:system-ui,-apple-system,"Segoe UI",Roboto,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  background:var(--bg);color:var(--text);line-height:1.65;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--brand);text-decoration:none}
a:hover{opacity:.85}
img,svg{max-width:100%;vertical-align:middle}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.narrow{max-width:760px;margin:0 auto}

/* ---------- 顶栏 ---------- */
.topbar{position:sticky;top:0;z-index:50;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  background:color-mix(in srgb,var(--bg) 78%,transparent);border-bottom:1px solid var(--line)}
.topbar-in{max-width:var(--maxw);margin:0 auto;padding:12px 20px;display:flex;align-items:center;gap:14px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:.2px;color:var(--text);font-size:17px}
.logo .mark{width:30px;height:30px;border-radius:9px;background:linear-gradient(135deg,var(--brand),var(--brand-2));
  display:grid;place-items:center;color:#fff;flex:none;box-shadow:0 4px 12px color-mix(in srgb,var(--brand) 35%,transparent)}
.topnav{margin-left:auto;display:flex;gap:4px}
.topnav a{color:var(--muted);font-size:14.5px;font-weight:600;padding:8px 12px;border-radius:10px}
.topnav a:hover{color:var(--text);background:var(--card)}
.topnav a.on{color:var(--brand);background:var(--brand-soft)}

/* ---------- Hero ---------- */
.hero{padding:56px 0 30px;text-align:center;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:-40% -20% auto;height:130%;pointer-events:none;
  background:radial-gradient(560px 300px at 25% 0%,color-mix(in srgb,var(--brand) 14%,transparent),transparent 70%),
             radial-gradient(560px 300px at 78% 6%,color-mix(in srgb,var(--brand-2) 13%,transparent),transparent 70%)}
.hero>.wrap{position:relative}
.badge{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand-ink);font-size:13px;font-weight:700;letter-spacing:.3px}
.badge .dot{width:7px;height:7px;border-radius:50%;background:var(--brand);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.hero h1{font-size:clamp(30px,6vw,46px);line-height:1.2;font-weight:800;margin:18px 0 12px;letter-spacing:.5px}
.hero h1 .grad{background:linear-gradient(120deg,var(--brand),var(--brand-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.sub{color:var(--muted);font-size:clamp(15px,2.4vw,17.5px);max-width:560px;margin:0 auto}
.hero .cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:26px}
.hero-feats{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin-top:26px}
.feat-chip{display:inline-flex;align-items:center;gap:7px;font-size:13px;color:var(--muted);
  background:var(--card);border:1px solid var(--line);border-radius:999px;padding:7px 13px}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;cursor:pointer;
  font-size:15.5px;font-weight:700;border-radius:14px;padding:13px 24px;min-height:48px;
  transition:transform .15s ease,box-shadow .15s ease,background .15s;user-select:none;-webkit-tap-highlight-color:transparent}
.btn:active{transform:scale(.97)}
.btn.primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;
  box-shadow:0 8px 22px color-mix(in srgb,var(--brand) 40%,transparent)}
.btn.primary:hover{box-shadow:0 10px 26px color-mix(in srgb,var(--brand) 55%,transparent)}
.btn.ghost{background:var(--card);color:var(--text);border:1.5px solid var(--line)}
.btn.ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn.text{background:none;color:var(--muted);padding:8px 12px;min-height:44px;font-weight:600}
.btn.text:hover{color:var(--text)}
.btn.sm{padding:9px 16px;min-height:40px;font-size:14px;border-radius:11px}
.btn:disabled{opacity:.45;cursor:not-allowed;box-shadow:none}
.btn.block{width:100%}

/* ---------- 卡片 ---------- */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow)}
.section{padding:44px 0}
.sec-head{display:flex;align-items:baseline;gap:12px;margin-bottom:20px}
.sec-head h2{font-size:clamp(20px,3.6vw,26px);font-weight:800}
.sec-head .more{margin-left:auto;font-size:14px;font-weight:600}

/* 测试列表 */
.test-grid{display:grid;grid-template-columns:1fr;gap:16px}
@media(min-width:720px){.test-grid{grid-template-columns:1fr 1fr}}
.test-card{padding:22px;display:flex;flex-direction:column;gap:12px;position:relative;
  transition:transform .18s ease,box-shadow .18s ease}
.test-card:not(.soon):hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.test-card .t-top{display:flex;align-items:center;gap:13px}
.t-icon{width:52px;height:52px;border-radius:15px;display:grid;place-items:center;flex:none;
  background:linear-gradient(135deg,var(--brand-soft),var(--brand-soft-2));color:var(--brand)}
.test-card.soon .t-icon{filter:grayscale(1);opacity:.55}
.test-card h3{font-size:18px;font-weight:800;line-height:1.35}
.t-meta{font-size:13px;color:var(--muted);margin-top:3px}
.pill{position:absolute;top:16px;right:16px;font-size:12px;font-weight:700;padding:5px 11px;border-radius:999px}
.pill.live{background:var(--ok-soft);color:var(--ok)}
.pill.soon{background:var(--card-2);color:var(--muted);border:1px solid var(--line)}
.test-card p.desc{font-size:14.5px;color:var(--muted)}
.t-actions{display:flex;gap:10px;margin-top:auto;padding-top:6px}
.test-card.soon{opacity:.75}

/* 最近结果 */
.last-result{padding:22px;display:flex;gap:16px;align-items:center;flex-wrap:wrap}
.last-result .lr-icon{width:54px;height:54px;border-radius:16px;flex:none;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff}
.last-result h3{font-size:17px;font-weight:800}
.last-result p{font-size:13.5px;color:var(--muted)}
.last-result .lr-btns{margin-left:auto;display:flex;gap:10px;flex-wrap:wrap}
@media(max-width:560px){.last-result .lr-btns{margin-left:0;width:100%}.last-result .lr-btns .btn{flex:1}}

/* ---------- 测试页 ---------- */
.stage{padding:28px 0 60px}
.step{display:none;animation:fadein .35s ease}
.step.active{display:block}
@keyframes fadein{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}

.intro-card{padding:30px 24px}
.intro-card h1{font-size:clamp(24px,5vw,32px);font-weight:800;margin:14px 0 8px}
.intro-card .lead{color:var(--muted);font-size:15.5px}
.scale-preview{display:flex;gap:6px;justify-content:center;margin:22px 0 6px}
.scale-preview span{flex:1;max-width:64px;text-align:center;font-size:12px;color:var(--muted);
  background:var(--card-2);border:1px solid var(--line);border-radius:10px;padding:8px 2px}
.scale-labels{display:flex;justify-content:space-between;font-size:13px;color:var(--muted);font-weight:600}
.intro-notes{margin-top:20px;display:grid;gap:10px}
.note{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--muted)}
.note b{color:var(--text);font-weight:700}
.note .ic{flex:none;margin-top:2px;color:var(--brand)}

/* 答题区 */
.quiz-top{max-width:680px;margin:0 auto 16px}
.quiz-meta{display:flex;justify-content:space-between;align-items:center;font-size:13.5px;color:var(--muted);margin-bottom:10px}
.progress{height:8px;border-radius:99px;background:var(--line);overflow:hidden}
.progress i{display:block;height:100%;width:0;border-radius:99px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));transition:width .3s ease}
.q-card{max-width:680px;margin:0 auto;padding:28px 22px 20px}
.q-num{font-size:13px;font-weight:800;color:var(--brand);letter-spacing:1px}
.q-text{font-size:clamp(19px,4.4vw,23px);font-weight:800;line-height:1.5;margin:10px 0 22px;min-height:2.6em}
.opts{display:grid;gap:10px}
.opt{display:flex;align-items:center;gap:12px;padding:14px 16px;border-radius:14px;cursor:pointer;
  background:var(--card-2);border:1.5px solid var(--line);transition:all .15s;min-height:54px;
  user-select:none;-webkit-tap-highlight-color:transparent}
.opt:hover{border-color:color-mix(in srgb,var(--brand) 45%,var(--line))}
.opt.sel{border-color:var(--brand);background:var(--brand-soft)}
.opt.sel .opt-key{background:var(--brand);color:#fff;border-color:var(--brand)}
.opt-key{width:30px;height:30px;border-radius:9px;flex:none;display:grid;place-items:center;
  font-size:13.5px;font-weight:800;background:var(--card);border:1.5px solid var(--line);color:var(--muted)}
.opt-label{font-size:15.5px;font-weight:600}
.quiz-nav{max-width:680px;margin:18px auto 0;display:flex;align-items:center;gap:10px}
.quiz-nav .spacer{flex:1}
.quiz-tip{text-align:center;color:var(--muted);font-size:12.5px;margin-top:14px}

/* 结果页 */
.result-head{text-align:center;margin-bottom:22px}
.result-head .rh-icon{width:74px;height:74px;margin:0 auto 14px;border-radius:24px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:var(--shadow-lg)}
.result-head h1{font-size:clamp(26px,6vw,36px);font-weight:800}
.result-head .tag{display:inline-block;margin-top:8px;padding:6px 16px;border-radius:999px;font-size:14px;font-weight:700;
  background:var(--brand-soft);color:var(--brand-ink)}
.dims{display:grid;gap:14px;max-width:640px;margin:0 auto}
.dim{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:16px 18px}
.dim .d-top{display:flex;justify-content:space-between;font-size:14.5px;font-weight:700;margin-bottom:9px}
.dim .d-top em{font-style:normal;color:var(--muted);font-weight:600;font-size:13px}
.dim .d-top b{color:var(--brand);font-size:16px}
.d-bar{height:10px;border-radius:99px;background:var(--line);position:relative;overflow:visible}
.d-bar i{position:absolute;left:0;top:0;height:100%;border-radius:99px;width:0;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));transition:width .8s cubic-bezier(.2,.7,.2,1)}
.d-bar .cut{position:absolute;top:-4px;bottom:-4px;width:2px;background:var(--warn);border-radius:2px}
.d-legend{font-size:12px;color:var(--muted);margin-top:8px;display:flex;justify-content:space-between}
.result-grid{display:grid;grid-template-columns:1fr;gap:16px;margin-top:16px}
@media(min-width:760px){.result-grid{grid-template-columns:340px 1fr}}
.quad-card{padding:22px}
.quad-card h3,.type-card h3{font-size:16px;font-weight:800;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.quad-card h3 svg,.type-card h3 svg{color:var(--brand)}
.type-card{padding:24px}
.type-card .tc-name{font-size:24px;font-weight:800;margin-bottom:2px}
.type-card .tc-en{font-size:13px;color:var(--muted);margin-bottom:14px}
.tc-block{margin-top:14px}
.tc-block h4{font-size:14px;font-weight:800;color:var(--brand);margin-bottom:7px}
.tc-block p,.tc-block li{font-size:14.5px;color:var(--muted)}
.tc-block ul{padding-left:1.2em;display:grid;gap:5px}
.tc-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
.tc-tags span{font-size:12.5px;font-weight:600;padding:5px 11px;border-radius:999px;background:var(--card-2);
  border:1px solid var(--line);color:var(--muted)}
.result-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:26px}
.r-disclaimer{text-align:center;font-size:12.5px;color:var(--muted);margin-top:18px;max-width:560px;margin-left:auto;margin-right:auto}

/* ---------- 说明页(about) ---------- */
.doc{padding:34px 0 60px}
.doc .crumb{font-size:13.5px;color:var(--muted);margin-bottom:14px}
.doc h1{font-size:clamp(26px,5.5vw,36px);font-weight:800;margin-bottom:8px}
.doc .doc-sub{color:var(--muted);font-size:15px;margin-bottom:26px}
.doc-sec{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);padding:24px 22px;margin-bottom:16px;scroll-margin-top:76px}
.doc-sec h2{font-size:19px;font-weight:800;margin-bottom:12px;display:flex;gap:9px;align-items:center}
.doc-sec h2 .idx{color:var(--brand);font-size:15px;font-weight:800;background:var(--brand-soft);
  width:26px;height:26px;border-radius:8px;display:grid;place-items:center;flex:none}
.doc-sec h3{font-size:15.5px;font-weight:800;margin:16px 0 6px}
.doc-sec p{font-size:14.8px;color:var(--muted);margin-bottom:9px}
.doc-sec p b,.doc-sec li b{color:var(--text)}
.doc-sec ul,.doc-sec ol{padding-left:1.25em;display:grid;gap:6px;margin-bottom:9px}
.doc-sec li{font-size:14.8px;color:var(--muted)}
.doc-sec blockquote{border-left:3px solid var(--brand);background:var(--brand-soft-2);
  padding:10px 14px;border-radius:0 10px 10px 0;font-size:14px;color:var(--muted);margin:10px 0}
.doc-sec code{background:var(--card-2);border:1px solid var(--line);padding:1px 7px;border-radius:7px;font-size:13px}
.ref-list{font-size:13.5px}
.ref-list li{color:var(--muted)}
.type-block{border-top:1px dashed var(--line);padding-top:14px;margin-top:14px}
.type-block:first-of-type{border-top:0;margin-top:4px}
.type-block h3{color:var(--text)}
.type-block .tb-en{font-size:12.5px;color:var(--muted);font-weight:600;margin-bottom:6px}
table.kv{width:100%;border-collapse:collapse;font-size:14px;margin:8px 0}
table.kv th,table.kv td{text-align:left;padding:8px 10px;border-bottom:1px solid var(--line)}
table.kv th{color:var(--text);font-weight:700;white-space:nowrap}
table.kv td{color:var(--muted)}
details.faq{border:1px solid var(--line);border-radius:14px;padding:14px 16px;margin-bottom:10px;background:var(--card-2)}
details.faq summary{font-weight:700;font-size:15px;cursor:pointer;list-style:none;display:flex;gap:10px;align-items:center}
details.faq summary::before{content:"+";color:var(--brand);font-weight:800;font-size:17px;width:18px;flex:none}
details.faq[open] summary::before{content:"−"}
details.faq p{margin:10px 0 0;font-size:14.5px}

/* ---------- 页脚 ---------- */
footer{border-top:1px solid var(--line);margin-top:30px}
.foot-in{max-width:var(--maxw);margin:0 auto;padding:28px 20px 40px;display:grid;gap:10px}
.foot-in p{font-size:13px;color:var(--muted)}
.foot-links{display:flex;gap:16px;flex-wrap:wrap;font-size:13.5px}

/* 移动端安全区 */
@supports(padding:max(0px)){
  .topbar-in{padding-left:max(20px,env(safe-area-inset-left));padding-right:max(20px,env(safe-area-inset-right))}
  .wrap{padding-left:max(20px,env(safe-area-inset-left));padding-right:max(20px,env(safe-area-inset-right))}
}
@media(max-width:520px){
  .hero{padding:40px 0 18px}
  .section{padding:32px 0}
  .q-card{padding:22px 16px 16px}
  .intro-card{padding:24px 18px}
}
@media (prefers-reduced-motion: reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}