/* ============================================================
   MyDB 计算引擎 — 深色极简风格（参考 cntokenhub.com.cn）
   ============================================================ */
:root{
  /* 中性色板（OKLab 近黑 + 近白） */
  --bg:#151515;
  --surface:rgba(255,255,255,.045);
  --surface-strong:rgba(255,255,255,.07);
  --text:#f4f4f4;
  --text-2:rgba(244,244,244,.66);
  --text-3:rgba(244,244,244,.42);
  --border:rgba(255,255,255,.09);
  --border-strong:rgba(255,255,255,.18);

  /* 代码 / 提示 */
  --code-bg:#0e0e0e;
  --code-bar:rgba(255,255,255,.04);
  --code-text:#e6e6e6;
  --amber:#f5b544;

  /* 支付品牌色（仅用于二维码区分） */
  --wechat:#07c160;
  --alipay:#1677ff;

  --radius:16px;
  --radius-lg:22px;
  --shadow:0 8px 30px rgba(0,0,0,.35);
  --shadow-hover:0 16px 44px rgba(0,0,0,.5);
  --maxw:1160px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",
    "PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color:var(--text);background:var(--bg);line-height:1.7;font-size:16px;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--text);text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(21,21,21,.72);backdrop-filter:saturate(160%) blur(16px);
  border-bottom:1px solid var(--border);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center}
.brand img{height:36px;width:auto}
.nav-links{display:flex;align-items:center;gap:32px;list-style:none}
.nav-links a{color:var(--text-2);font-size:15px;font-weight:500;transition:color .2s}
.nav-links a:hover{color:var(--text)}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;padding:6px}
.nav-toggle span{display:block;width:24px;height:2px;background:var(--text);margin:5px 0;border-radius:2px;transition:.3s}

/* ===== Hero ===== */
.hero{
  position:relative;overflow:hidden;
  background:var(--bg);color:var(--text);padding:96px 0 104px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(640px 340px at 85% -10%,rgba(255,255,255,.10),transparent 60%),
    radial-gradient(520px 280px at 0% 100%,rgba(255,255,255,.06),transparent 60%);
  pointer-events:none;
}
.hero .container{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--surface);border:1px solid var(--border);
  padding:6px 14px;border-radius:999px;font-size:13px;color:var(--text-2);
}
.hero-badge .dot{width:7px;height:7px;border-radius:50%;background:#5ee08f;box-shadow:0 0 0 4px rgba(94,224,143,.22)}
.hero h1{font-size:46px;line-height:1.22;font-weight:700;margin:22px 0 18px;letter-spacing:-.5px}
.hero p.lead{font-size:17px;color:var(--text-2);margin-bottom:34px;max-width:540px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 26px;border-radius:var(--radius);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:transform .15s,background .2s,border-color .2s;
}
.btn-primary{background:#fff;color:#0e0e0e}
.btn-primary:hover{transform:translateY(-2px);background:#e9e9e9}
.btn-ghost{background:rgba(255,255,255,.05);color:var(--text);border-color:var(--border-strong)}
.btn-ghost:hover{background:rgba(255,255,255,.1)}
.hero-stats{display:flex;gap:40px;margin-top:46px}
.hero-stats .num{font-size:27px;font-weight:700}
.hero-stats .lbl{font-size:13px;color:var(--text-3)}

/* Hero visual card */
.hero-visual{
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-lg);padding:22px;
  box-shadow:var(--shadow);
}
.chat-dot-row{display:flex;gap:7px;margin-bottom:18px}
.chat-dot-row i{width:11px;height:11px;border-radius:50%;background:rgba(255,255,255,.25);display:block}
.chat-line{background:rgba(255,255,255,.07);border:1px solid var(--border);border-radius:12px;padding:11px 14px;font-size:13.5px;color:var(--text-2);margin-bottom:11px}
.chat-line.user{background:#fff;color:#0e0e0e;font-weight:600;margin-left:40px;border-color:#fff}
.chat-line .tag{display:inline-block;font-size:11px;padding:1px 8px;border-radius:6px;margin-right:7px;font-weight:700}
.tag-buy{background:rgba(244,63,63,.18);color:#ff8a8a}
.tag-hold{background:rgba(245,181,68,.16);color:var(--amber)}
.tag-sell{background:rgba(18,148,90,.2);color:#4cd3a0}

/* ===== Sections common ===== */
.section{padding:88px 0}
.section.alt{background:rgba(255,255,255,.02);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.section-head{text-align:center;max-width:680px;margin:0 auto 56px}
.section-head .kicker{
  display:inline-block;color:var(--text-3);font-weight:600;font-size:13px;
  letter-spacing:2.5px;margin-bottom:12px;
}
.section-head h2{font-size:34px;font-weight:700;margin-bottom:14px;letter-spacing:-.4px}
.section-head p{color:var(--text-2);font-size:16px}

/* ===== Modes (usage) ===== */
.modes{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-bottom:60px}
.mode-card{
  position:relative;background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-lg);padding:32px 26px 28px;overflow:hidden;
}
.mode-card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:rgba(255,255,255,.45)}
.mode-card:nth-child(2)::before{background:rgba(255,255,255,.7)}
.mode-card:nth-child(3)::before{background:#fff}
.mode-no{
  font-size:12.5px;font-weight:600;color:var(--text-3);letter-spacing:1.5px;margin-bottom:10px;
}
.mode-card h3{font-size:20px;margin-bottom:10px;font-weight:600}
.mode-card p{color:var(--text-2);font-size:14.5px;margin-bottom:16px}
.mode-card ul{list-style:none}
.mode-card li{font-size:14px;color:var(--text-2);padding:5px 0 5px 24px;position:relative}
.mode-card li::before{
  content:"";position:absolute;left:2px;top:12px;width:7px;height:7px;border-radius:50%;
  background:rgba(255,255,255,.5);
}
.mode-card:nth-child(2) li::before{background:rgba(255,255,255,.7)}
.mode-card:nth-child(3) li::before{background:#fff}

/* 提问示例 */
.try-box{
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-lg);padding:30px 34px;
}
.try-box h3{margin-bottom:16px;font-size:18px;font-weight:600}
.prompt-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.prompt-chip{
  background:rgba(255,255,255,.06);border:1px solid var(--border);
  color:var(--text-2);border-radius:12px;padding:13px 16px;font-size:14px;
}

/* ===== Code block ===== */
.setup-main{display:grid;grid-template-columns:.9fr 1.1fr;gap:40px;align-items:start}
.steps{list-style:none;counter-reset:step}
.steps li{
  counter-increment:step;position:relative;padding:0 0 28px 56px;
}
.steps li:last-child{padding-bottom:0}
.steps li::before{
  content:counter(step);position:absolute;left:0;top:0;
  width:38px;height:38px;border-radius:50%;
  background:rgba(255,255,255,.1);border:1px solid var(--border-strong);
  color:var(--text);font-weight:600;
  display:flex;align-items:center;justify-content:center;font-size:15px;
}
.steps li::after{
  content:"";position:absolute;left:18px;top:40px;bottom:0;width:2px;background:var(--border);
}
.steps li:last-child::after{display:none}
.steps h4{font-size:17px;margin-bottom:5px;font-weight:600}
.steps p{color:var(--text-2);font-size:14.5px}
.steps p code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  color:var(--amber);background:rgba(255,255,255,.06);padding:1px 6px;border-radius:6px;font-size:13px;
}
.setup-aside{position:sticky;top:88px;align-self:start}
.code-panel{
  background:var(--code-bg);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow);
}
.code-bar{
  display:flex;align-items:center;justify-content:space-between;
  padding:12px 18px;background:var(--code-bar);border-bottom:1px solid var(--border);
}
.code-bar .dots{display:flex;gap:7px;align-items:center}
.code-bar .dots i{width:11px;height:11px;border-radius:50%;display:block}
.code-bar .dots i:nth-child(1){background:#ff5f57}
.code-bar .dots i:nth-child(2){background:#febc2e}
.code-bar .dots i:nth-child(3){background:#28c840}
.code-bar .fname{color:var(--text-3);font-size:13px;margin-left:12px;flex:1}
.copy-btn{
  background:rgba(255,255,255,.08);color:var(--text);border:1px solid var(--border);border-radius:10px;
  padding:5px 14px;font-size:12.5px;cursor:pointer;transition:background .2s,border-color .2s;font-family:inherit;
}
.copy-btn:hover{background:rgba(255,255,255,.16)}
.copy-btn.done{background:#12945a;color:#fff;border-color:#12945a}
pre{margin:0;padding:20px 22px;overflow-x:auto}
code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;
  font-size:13.5px;color:var(--code-text);line-height:1.75;
}
.code-note{
  margin-top:40px;
  padding:18px 24px;
  background:rgba(245,181,68,.08);border:1px solid rgba(245,181,68,.25);
  border-radius:12px;font-size:14px;color:rgba(245,181,68,.85);
  text-align:left;
}
.code-note b{color:var(--amber)}
.endpoint-alt{
  margin:12px 0 0;width:100%;
  font-size:13px;
  background:rgba(0,0,0,.35);border:1px solid var(--border);border-radius:10px;padding:9px 13px;
  display:flex;align-items:center;justify-content:space-between;gap:10px;
}
.endpoint-alt code{color:var(--text);font-size:13px}

/* ===== License / QR section ===== */
.license-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-bottom:52px}
.license-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:32px 26px;text-align:center;
}
.license-card .lc-icon{
  width:50px;height:50px;border-radius:50%;margin:0 auto 16px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.1);border:1px solid var(--border-strong);color:var(--text);
}
.lc-icon svg{width:24px;height:24px}
.license-card h3{font-size:18px;margin-bottom:10px;font-weight:600}
.license-card p{font-size:14px;color:var(--text-2);margin-bottom:18px}
.license-card p.hl{color:var(--amber)}

/* QR boxes */
.qr-box{
  border:1.5px dashed var(--border-strong);border-radius:14px;background:rgba(255,255,255,.03);
  padding:16px;display:flex;flex-direction:column;align-items:center;gap:8px;
}
.qr-box img.qr{width:158px;height:158px;border-radius:10px;object-fit:cover}
.qr-box .qr-placeholder{
  width:158px;height:158px;border-radius:10px;
  display:none;flex-direction:column;align-items:center;justify-content:center;gap:6px;
  color:var(--text-3);
}
.qr-placeholder svg{width:44px;height:44px;opacity:.6}
.qr-placeholder span{font-size:12px;text-align:center;line-height:1.5;padding:0 10px}
.qr-box .qr-label{font-size:13px;font-weight:600;color:var(--text-2)}
.qr-label.is-wechat{color:var(--wechat)}
.qr-label.is-alipay{color:#5ea2ff}

/* ===== Footer ===== */
.site-footer{border-top:1px solid var(--border);padding:34px 0;font-size:14px;color:var(--text-3)}
.footer-bar{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:10px}
.footer-bar a{color:var(--text-3)}
.footer-bar a:hover{color:var(--text)}
.footer-bar .sep{color:var(--text-3)}
.footer-bar .copy{margin-left:4px}

/* ===== Legal pages (terms / privacy) ===== */
.legal-page{padding:64px 0 80px}
.legal-wrap{max-width:820px;margin:0 auto}
.legal-wrap .back{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--text-3);margin-bottom:30px}
.legal-wrap .back:hover{color:var(--text)}
.legal-wrap h1{font-size:32px;font-weight:700;margin-bottom:10px;letter-spacing:-.5px}
.legal-meta{font-size:13.5px;color:var(--text-3);margin-bottom:36px}
.legal-wrap h2{font-size:19px;font-weight:600;margin:34px 0 12px}
.legal-wrap p{font-size:15px;line-height:1.85;color:var(--text-2);margin-bottom:14px}
.legal-wrap ul{margin:0 0 14px;padding-left:22px}
.legal-wrap li{font-size:15px;line-height:1.85;color:var(--text-2);margin-bottom:8px}
.legal-wrap strong{color:var(--text);font-weight:600}

/* ===== 每日投研 / 时间轴 ===== */
.research-wrap{max-width:900px;margin:0 auto}
.timeline{position:relative;padding-top:6px}
.timeline::before{
  content:"";position:absolute;left:112px;top:14px;bottom:14px;width:1px;
  background:linear-gradient(to bottom,rgba(255,255,255,.3),rgba(255,255,255,.1) 55%,transparent);
}
.tl-item{
  display:grid;grid-template-columns:96px 32px minmax(0,1fr);align-items:start;
  padding-bottom:30px;position:relative;
}
.tl-item:last-child{padding-bottom:0}
.tl-date{text-align:right;padding:6px 2px 0 0}
.tl-date .d{display:block;font-size:26px;font-weight:700;line-height:1.1;letter-spacing:-.6px}
.tl-date .ym{
  display:block;margin-top:5px;font-size:11.5px;color:var(--text-3);letter-spacing:.6px;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
.tl-rail{position:relative;height:100%;min-height:44px}
.tl-dot{
  position:absolute;left:50%;top:16px;transform:translate(-50%,-50%);
  width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.85);
  box-shadow:0 0 0 5px rgba(255,255,255,.05);transition:background .25s,box-shadow .25s;
}
.tl-item.is-latest .tl-dot{
  background:var(--amber);
  box-shadow:0 0 0 5px rgba(245,181,68,.12),0 0 16px rgba(245,181,68,.5);
}
.tl-card{
  position:relative;background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-lg);padding:22px 26px 20px;cursor:pointer;text-align:left;
  color:inherit;font:inherit;width:100%;
  transition:border-color .25s,background .25s,transform .25s,box-shadow .25s;
}
.tl-card:hover,.tl-card:focus-visible{
  border-color:var(--border-strong);background:var(--surface-strong);
  transform:translateX(4px);box-shadow:var(--shadow);outline:none;
}
.tl-item.is-latest .tl-card::before{
  content:"";position:absolute;left:0;top:18px;bottom:18px;width:2px;
  background:linear-gradient(to bottom,var(--amber),rgba(245,181,68,0));
  border-radius:2px;opacity:.6;
}
.tl-top{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:10px}
.tl-badge{
  display:inline-flex;align-items:center;gap:5px;
  font-size:11px;font-weight:700;letter-spacing:1px;
  color:var(--amber);background:rgba(245,181,68,.1);
  border:1px solid rgba(245,181,68,.3);border-radius:999px;padding:2px 9px;
}
.tl-date-chip{
  display:none;font-size:11.5px;color:var(--text-3);
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
.tl-tags{display:flex;gap:6px;flex-wrap:wrap;margin-left:auto}
.tl-tag{
  font-size:11.5px;color:var(--text-2);background:rgba(255,255,255,.06);
  border:1px solid var(--border);padding:2px 9px;border-radius:999px;
}
.tl-title{font-size:19px;font-weight:600;line-height:1.45;letter-spacing:-.2px}
.tl-summary{
  color:var(--text-2);font-size:14px;margin-top:8px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.tl-foot{
  display:inline-flex;align-items:center;gap:6px;margin-top:14px;
  font-size:12.5px;font-weight:600;color:var(--text-3);transition:color .25s;
}
.tl-foot svg{width:14px;height:14px;transition:transform .25s}
.tl-card:hover .tl-foot{color:var(--text)}
.tl-card:hover .tl-foot svg{transform:translateX(4px)}

/* 加载 / 空状态 */
.tl-status{
  display:flex;align-items:center;justify-content:center;gap:10px;
  padding:34px 0;color:var(--text-3);font-size:14px;
}
.tl-spinner{
  width:14px;height:14px;border-radius:50%;
  border:2px solid rgba(255,255,255,.18);border-top-color:var(--text);
  animation:tlspin .8s linear infinite;
}
@keyframes tlspin{to{transform:rotate(360deg)}}
.tl-empty{
  border:1px dashed var(--border-strong);border-radius:var(--radius-lg);
  background:rgba(255,255,255,.03);padding:46px 28px;text-align:center;color:var(--text-2);
}
.tl-empty svg{width:34px;height:34px;opacity:.5;margin:0 auto 14px}
.tl-empty h3{font-size:16px;font-weight:600;color:var(--text);margin-bottom:6px}
.tl-empty p{font-size:13.5px;color:var(--text-3)}
.tl-empty p code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  color:var(--amber);background:rgba(255,255,255,.06);padding:1px 6px;border-radius:6px;font-size:12.5px;
}

/* ===== 文章阅读弹层 ===== */
.article-modal{
  position:fixed;inset:0;z-index:300;
  display:flex;align-items:center;justify-content:center;padding:24px;
  visibility:hidden;opacity:0;transition:opacity .28s ease,visibility .28s;
}
.article-modal.open{visibility:visible;opacity:1}
.article-backdrop{position:absolute;inset:0;background:rgba(0,0,0,.66);backdrop-filter:blur(8px)}
.article-panel{
  position:relative;width:min(900px,100%);max-height:88vh;overflow-y:auto;
  background:#101010;border:1px solid var(--border-strong);border-radius:24px;
  box-shadow:0 30px 90px rgba(0,0,0,.6);padding:44px 52px 52px;
  transform:translateY(18px) scale(.985);transition:transform .32s ease;
}
.article-modal.open .article-panel{transform:none}
.article-panel::-webkit-scrollbar{width:10px}
.article-panel::-webkit-scrollbar-thumb{background:rgba(255,255,255,.14);border-radius:8px}
.article-close{
  position:absolute;right:20px;top:20px;width:38px;height:38px;border-radius:50%;
  background:rgba(255,255,255,.07);border:1px solid var(--border);color:var(--text-2);
  display:flex;align-items:center;justify-content:center;cursor:pointer;
  transition:background .2s,color .2s,border-color .2s;
}
.article-close:hover{background:rgba(255,255,255,.14);color:var(--text);border-color:var(--border-strong)}
.article-close svg{width:17px;height:17px}
.article-head{padding:0 46px 22px 0;border-bottom:1px solid var(--border);margin-bottom:28px}
.article-meta{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  font-size:12.5px;color:var(--text-3);margin-bottom:12px;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
.article-meta .sep{opacity:.4}
.article-meta .tag{
  font-family:inherit;color:var(--text-2);background:rgba(255,255,255,.06);
  border:1px solid var(--border);padding:1px 8px;border-radius:999px;font-size:11.5px;
}
.article-title{font-size:27px;font-weight:700;line-height:1.4;letter-spacing:-.5px}
.article-body{font-size:15px;line-height:1.9;color:var(--text-2)}
.article-body h1,.article-body h2,.article-body h3,.article-body h4{
  color:var(--text);font-weight:600;line-height:1.45;margin:32px 0 12px;letter-spacing:-.2px;
}
.article-body h1{font-size:23px}
.article-body h2{font-size:21px;padding-left:12px;border-left:3px solid rgba(255,255,255,.35)}
.article-body h3{font-size:18px}
.article-body h4{font-size:16px}
.article-body p{margin-bottom:15px}
.article-body a{color:var(--amber);border-bottom:1px solid rgba(245,181,68,.35);transition:border-color .2s}
.article-body a:hover{border-color:var(--amber)}
.article-body strong{color:var(--text);font-weight:600}
.article-body em{color:var(--text);font-style:italic}
.article-body img{border-radius:14px;border:1px solid var(--border);margin:20px auto}
.article-body blockquote{
  margin:20px 0;padding:14px 20px;color:var(--text-2);
  border-left:2px solid var(--amber);background:rgba(255,255,255,.04);
  border-radius:0 12px 12px 0;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body ul,.article-body ol{margin:0 0 16px;padding-left:24px}
.article-body li{margin-bottom:7px}
.article-body li::marker{color:var(--text-3)}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:13px;background:rgba(255,255,255,.08);color:#eaeaea;
  padding:2px 6px;border-radius:6px;
}
.article-body pre{
  background:var(--code-bg);border:1px solid var(--border);border-radius:12px;
  padding:16px 18px;margin:20px 0;overflow-x:auto;
}
.article-body pre code{background:none;padding:0;border-radius:0;font-size:13px;line-height:1.7}
.article-body hr{border:0;border-top:1px solid var(--border);margin:28px 0}
.article-body .md-table{overflow-x:auto;margin:20px 0}
.article-body .md-table table{width:100%;border-collapse:collapse;font-size:14px}
.article-body .md-table th,.article-body .md-table td{
  border:1px solid var(--border);padding:9px 13px;text-align:left;white-space:nowrap;
}
.article-body .md-table th{background:rgba(255,255,255,.06);color:var(--text);font-weight:600}

/* ===== Animations ===== */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease}
.reveal.visible{opacity:1;transform:none}

/* ===== 首页：每日投研入口卡 + 最新预览 ===== */
.research-entrance{
  display:grid;grid-template-columns:1.1fr 1fr;gap:28px;align-items:stretch;
}
.re-intro{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:34px 36px;display:flex;align-items:center;gap:20px;position:relative;overflow:hidden;
  transition:border-color .25s;
}
.re-intro:hover{border-color:var(--border-strong)}
.re-intro::after{
  content:"";position:absolute;right:-40px;top:-40px;width:180px;height:180px;border-radius:50%;
  background:radial-gradient(circle,rgba(245,181,68,.22),transparent 70%);pointer-events:none;
}
.re-icon{
  flex-shrink:0;width:58px;height:58px;border-radius:16px;display:flex;align-items:center;justify-content:center;
  background:rgba(245,181,68,.1);border:1px solid rgba(245,181,68,.35);color:var(--amber);
}
.re-icon svg{width:28px;height:28px}
.re-intro h3{font-size:20px;font-weight:600;margin-bottom:4px}
.re-desc{color:var(--text-2);font-size:14px}
.re-go{margin-left:auto;flex-shrink:0;gap:7px}
.re-go svg{width:15px;height:15px}

.re-preview{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:18px 22px;min-height:100%;
}
.re-preview-head{
  display:flex;align-items:center;justify-content:space-between;
  padding-bottom:12px;border-bottom:1px solid var(--border);margin-bottom:8px;
}
.re-preview-head h4{font-size:13px;font-weight:600;letter-spacing:.8px;color:var(--text-3);text-transform:uppercase}
.re-count{
  font-size:12px;color:var(--text-3);font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
.re-list{list-style:none;margin:0;padding:0}
.re-item{
  display:flex;gap:16px;padding:13px 0;border-bottom:1px solid var(--border);
  transition:background .2s;
}
.re-item:last-child{border-bottom:0}
.re-item:hover .re-item-title{color:var(--amber)}
.re-item-date{
  flex-shrink:0;text-align:center;width:52px;padding-top:1px;
}
.re-day{display:block;font-size:20px;font-weight:700;line-height:1.15;letter-spacing:-.3px}
.re-ym{display:block;font-size:10.5px;color:var(--text-3);letter-spacing:.5px;margin-top:3px}
.re-item-body{flex:1;min-width:0}
.re-item-title{
  display:block;font-size:15px;font-weight:600;color:var(--text);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;transition:color .2s;
}
.re-item-summary{
  margin:4px 0 0;font-size:13px;color:var(--text-2);line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.re-item-tags{display:flex;gap:5px;margin-top:6px;flex-wrap:wrap}
.re-item-tags span{
  font-size:11px;color:var(--text-3);background:rgba(255,255,255,.06);
  border:1px solid var(--border);padding:1px 8px;border-radius:999px;
}

/* ===== 时间轴工具条（搜索 + 计数） ===== */
.timeline-toolbar{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  max-width:900px;margin:-12px auto 32px;
}
.tl-count{
  font-size:13px;color:var(--text-3);
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
.tl-search-wrap{
  position:relative;flex:1;max-width:420px;
}
.tl-search-icon{
  position:absolute;left:13px;top:50%;transform:translateY(-50%);
  width:15px;height:15px;color:var(--text-3);pointer-events:none;
}
.tl-search{
  width:100%;padding:10px 40px 10px 38px;
  background:var(--surface);border:1px solid var(--border);border-radius:12px;
  color:var(--text);font-size:14px;font-family:inherit;
  transition:border-color .2s,background .2s,box-shadow .2s;
}
.tl-search::placeholder{color:var(--text-3)}
.tl-search:focus{
  outline:none;border-color:var(--border-strong);
  background:var(--surface-strong);box-shadow:0 0 0 3px rgba(255,255,255,.05);
}
.tl-search-clear{
  position:absolute;right:8px;top:50%;transform:translateY(-50%);
  width:24px;height:24px;border-radius:50%;background:rgba(255,255,255,.08);
  border:none;color:var(--text-2);cursor:pointer;font-size:11px;display:flex;align-items:center;justify-content:center;
}
.tl-search-clear:hover{background:rgba(255,255,255,.16);color:var(--text)}

/* ===== Responsive ===== */
@media (max-width:960px){
  .hero{padding:70px 0 80px}
  .hero .container{grid-template-columns:1fr;gap:44px}
  .hero h1{font-size:36px}
  .hero-visual{max-width:520px}
  .modes,.license-grid{grid-template-columns:1fr 1fr}
  .setup-main{grid-template-columns:1fr}
  .setup-aside{position:static}
  .section{padding:66px 0}
  .section-head h2{font-size:28px}

  /* 每日投研入口 */
  .research-entrance{grid-template-columns:1fr;gap:20px}
  .re-intro{flex-wrap:wrap;padding:26px 28px}
  .re-go{margin-left:0}
}
@media (max-width:640px){
  .container{padding:0 18px}
  .nav-links{
    position:absolute;top:64px;left:0;right:0;
    background:#181818;border-bottom:1px solid var(--border);
    flex-direction:column;align-items:flex-start;gap:0;
    padding:8px 0;display:none;box-shadow:var(--shadow);
  }
  .nav-links.open{display:flex}
  .nav-links li{width:100%}
  .nav-links a{display:block;padding:13px 24px;width:100%}
  .nav-toggle{display:block}
  .modes,.license-grid{grid-template-columns:1fr}
  .prompt-grid{grid-template-columns:1fr}
  .hero h1{font-size:29px}
  .hero p.lead{font-size:16px}
  .hero-stats{gap:26px}
  .hero-stats .num{font-size:23px}
  .btn{padding:11px 22px;font-size:15px}
  .section-head h2{font-size:25px}
  .code-note{padding:16px}
  .endpoint-alt{flex-direction:column;gap:8px;text-align:center}
  .endpoint-alt .copy-btn{align-self:center}

  /* 每日投研 */
  .timeline::before{left:15px;top:10px;bottom:10px}
  .tl-item{grid-template-columns:32px minmax(0,1fr);padding-bottom:22px}
  .tl-date{display:none}
  .tl-date-chip{display:inline}
  .tl-tags{margin-left:0}
  .tl-card{padding:18px 18px 16px}
  .tl-card:hover,.tl-card:focus-visible{transform:translateY(-2px)}
  .tl-title{font-size:17px}
  .article-modal{padding:0}
  .article-panel{height:100%;max-height:100vh;border-radius:0;border:0;padding:26px 20px 44px}
  .article-head{padding-right:40px}
  .article-title{font-size:21px}
  .article-close{right:12px;top:14px}

  /* 时间轴工具条 */
  .timeline-toolbar{flex-direction:column;align-items:stretch;margin:-6px auto 22px}
  .tl-search-wrap{max-width:none}

  /* 首页预览 */
  .re-item{padding:11px 0;gap:12px}
  .re-item-date{width:42px}
  .re-day{font-size:17px}
  .re-ym{font-size:10px}
}