/* =========================================================
   Day1 Research · 机构级投研平台
   视觉语言：墨蓝底 + 羊皮米白 + 古金点缀 + 衬线体
   ========================================================= */

:root {
  /* 背景层级 */
  --ink:            #0a0f1a;   /* 墨蓝主背景 */
  --ink-soft:       #0e1524;   /* 次背景 */
  --surface:        #121a2b;   /* 卡片 */
  --surface-2:      #17202f;   /* 卡片悬浮 */
  --surface-3:      #1d2739;

  /* 线条 */
  --hairline:       rgba(201, 169, 97, 0.15);
  --hairline-2:     rgba(237, 227, 202, 0.08);
  --hairline-strong:rgba(201, 169, 97, 0.35);

  /* 文字 */
  --ivory:          #ede3ca;   /* 羊皮米白，主文字 */
  --ivory-dim:      #c7bfac;
  --muted:          #8892a6;
  --faded:          #5a6378;

  /* 强调 */
  --gold:           #c9a961;
  --gold-soft:      #d4b57e;
  --gold-deep:      #a88b45;

  /* 涨跌（金融惯例：绿涨红跌，可按需反转）*/
  --bull:           #4caf7d;
  --bear:           #d66a6a;
  --warn:           #d4a24c;

  /* 字体 */
  --font-serif:     "Noto Serif SC", "Source Han Serif SC", Georgia, "Times New Roman", serif;
  --font-sans:      "Inter", -apple-system, BlinkMacSystemFont, "PingFang SC",
                    "Helvetica Neue", "Microsoft YaHei", sans-serif;
  --font-mono:      "JetBrains Mono", "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace;
}

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

html, body {
  background: var(--ink);
  color: var(--ivory);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "tnum", "kern";
}

body {
  min-height: 100vh;
  background:
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(201, 169, 97, 0.06) 0%, transparent 60%),
    var(--ink);
}

.hidden { display: none !important; }

/* ========================= 通用元素 ========================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 1px solid transparent;
  border-radius: 2px;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
  text-decoration: none;
  color: var(--ivory);
  background: transparent;
}

.btn-primary {
  background: var(--gold);
  color: #1a1308;
  border-color: var(--gold);
}
.btn-primary:hover { background: var(--gold-soft); border-color: var(--gold-soft); }
.btn-primary:disabled { opacity: 0.4; cursor: not-allowed; }

.btn-outline {
  border-color: var(--hairline-strong);
  color: var(--ivory);
  background: transparent;
  padding: 10px 18px;
}
.btn-outline:hover { border-color: var(--gold); color: var(--gold); }

.btn-dark {
  background: var(--surface-2);
  border-color: var(--hairline);
  color: var(--ivory);
}
.btn-dark:hover { border-color: var(--gold); color: var(--gold); background: var(--surface-3); }

.btn-ghost {
  border-color: transparent;
  color: var(--ivory-dim);
  padding: 10px 16px;
}
.btn-ghost:hover { color: var(--gold); }

.btn-sm { padding: 7px 14px; font-size: 11px; letter-spacing: 0.06em; }
.btn-full { width: 100%; }

.arr { font-family: var(--font-mono); opacity: 0.7; transition: transform 0.2s; }
.btn:hover .arr { transform: translateX(3px); opacity: 1; }

/* ========================= 顶部导航 ========================= */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(10, 15, 26, 0.92);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--hairline);
}

.nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 16px 32px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 32px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: 1px solid var(--gold);
  color: var(--gold);
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: 14px;
  letter-spacing: -0.02em;
  border-radius: 2px;
}
.brand-name {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.22em;
  color: var(--ivory);
}
.brand-name-sub {
  color: var(--gold);
  font-weight: 500;
}

.nav-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  justify-self: center;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--muted);
  text-transform: uppercase;
}
.nav-meta-sep { color: var(--faded); }

.nav-actions { display: flex; gap: 10px; }

/* 行情滚动条 */
.ticker {
  border-top: 1px solid var(--hairline-2);
  background: rgba(0, 0, 0, 0.3);
  overflow: hidden;
}
.ticker-track {
  display: inline-flex;
  gap: 32px;
  padding: 8px 0;
  white-space: nowrap;
  animation: ticker 60s linear infinite;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
}
.t-item {
  color: var(--ivory-dim);
  display: inline-flex;
  gap: 8px;
  align-items: center;
}
.t-item em {
  font-style: normal;
  font-weight: 600;
}
.t-up   { color: var(--bull); }
.t-down { color: var(--bear); }
@keyframes ticker {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ========================= Hero ========================= */
.landing {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px;
}

.hero {
  padding: 100px 0 80px;
  text-align: center;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.25em;
  color: var(--gold);
  margin-bottom: 36px;
  text-transform: uppercase;
}
.hero-eyebrow .rule {
  display: block;
  width: 56px;
  height: 1px;
  background: var(--hairline-strong);
}

.hero-title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(40px, 6vw, 72px);
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--ivory);
  margin-bottom: 32px;
}
.accent { color: var(--gold); font-style: italic; font-weight: 500; }

.hero-sub {
  font-size: 16px;
  color: var(--ivory-dim);
  line-height: 1.85;
  max-width: 680px;
  margin: 0 auto 44px;
}

.hero-cta {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 72px;
}

.hero-meta {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  max-width: 760px;
  margin: 0 auto;
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  padding: 28px 0;
}
.hero-meta-item {
  text-align: center;
  position: relative;
}
.hero-meta-item:not(:last-child)::after {
  content: "";
  position: absolute;
  right: 0; top: 18%;
  height: 64%;
  width: 1px;
  background: var(--hairline);
}
.hero-meta-num {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 36px;
  color: var(--gold);
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: 8px;
}
.hero-meta-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--muted);
  text-transform: uppercase;
}

/* ========================= Section 通用 ========================= */
.section-head {
  text-align: center;
  margin-bottom: 56px;
}
.section-eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 14px;
}
.section-title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(26px, 3.5vw, 38px);
  color: var(--ivory);
  letter-spacing: -0.01em;
  line-height: 1.25;
}

/* ========================= Features ========================= */
.features { padding: 100px 0; }

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 0;
  border: 1px solid var(--hairline);
}

.feature-card {
  padding: 36px 32px 30px;
  background: var(--surface);
  border-right: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  cursor: pointer;
  transition: all 0.25s ease;
  position: relative;
  display: flex;
  flex-direction: column;
}
.feature-card:last-child { border-right: none; }
.feature-card:hover {
  background: var(--surface-2);
}
.feature-card::before {
  content: "";
  position: absolute;
  left: 0; top: 0;
  width: 2px; height: 0;
  background: var(--gold);
  transition: height 0.25s ease;
}
.feature-card:hover::before { height: 100%; }

.feature-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--hairline-2);
}
.feature-no {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: -0.02em;
}
.feature-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--muted);
  text-transform: uppercase;
}

.feature-card h3 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 20px;
  color: var(--ivory);
  margin-bottom: 12px;
  letter-spacing: -0.005em;
}
.feature-card p {
  font-size: 14px;
  color: var(--ivory-dim);
  line-height: 1.7;
  margin-bottom: 18px;
}

.feature-list {
  list-style: none;
  padding: 0;
  margin: 0 0 22px;
  border-top: 1px solid var(--hairline-2);
  padding-top: 16px;
}
.feature-list li {
  font-size: 13px;
  color: var(--ivory-dim);
  padding: 5px 0 5px 18px;
  position: relative;
}
.feature-list li::before {
  content: "";
  position: absolute;
  left: 0; top: 14px;
  width: 8px; height: 1px;
  background: var(--gold);
}

.feature-cta {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--hairline-2);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--gold);
  text-transform: uppercase;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.feature-cta .arr { font-size: 14px; }

/* ========================= 报告样本 ========================= */
.preview-section { padding: 100px 0; }

.preview-wrap {
  max-width: 900px;
  margin: 0 auto;
  border: 1px solid var(--hairline);
  background: var(--ink-soft);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
}

.preview-chrome {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 20px;
  background: var(--surface);
  border-bottom: 1px solid var(--hairline);
}
.preview-dots {
  display: flex;
  gap: 6px;
}
.preview-dots i {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--hairline-strong);
  display: block;
}
.preview-dots i:first-child { background: var(--bear); opacity: 0.7; }
.preview-dots i:nth-child(2) { background: var(--warn); opacity: 0.7; }
.preview-dots i:last-child { background: var(--bull); opacity: 0.7; }
.preview-path {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.04em;
}

.preview-body {
  padding: 28px 36px;
}
.preview-body pre {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.9;
  color: var(--ivory-dim);
  white-space: pre-wrap;
  word-wrap: break-word;
  margin: 0;
}

/* ========================= Pricing ========================= */
.pricing { padding: 100px 0; }

.price-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0;
  border: 1px solid var(--hairline);
}

.price-card {
  padding: 40px 28px 32px;
  background: var(--surface);
  border-right: 1px solid var(--hairline);
  text-align: left;
  position: relative;
  transition: background 0.25s ease;
}
.price-card:last-child { border-right: none; }
.price-card:hover { background: var(--surface-2); }

.price-card.featured {
  background: linear-gradient(180deg, rgba(201, 169, 97, 0.08), var(--surface));
  border-top: 2px solid var(--gold);
  margin-top: -1px;
}

.price-flag {
  position: absolute;
  top: -12px;
  left: 28px;
  background: var(--gold);
  color: #1a1308;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  padding: 4px 10px;
}

.price-tier {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.25em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 10px;
}
.price-name {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--ivory);
  margin-bottom: 20px;
}
.price-num {
  font-family: var(--font-serif);
  font-size: 48px;
  font-weight: 700;
  color: var(--ivory);
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: 4px;
}
.price-num .currency {
  font-size: 20px;
  color: var(--gold);
  font-weight: 500;
  margin-right: 2px;
  vertical-align: super;
}
.price-per {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--muted);
  text-transform: uppercase;
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--hairline-2);
}

.price-feat {
  list-style: none;
  padding: 0;
  margin: 0 0 28px;
  min-height: 90px;
}
.price-feat li {
  font-size: 13px;
  color: var(--ivory-dim);
  padding: 4px 0 4px 16px;
  position: relative;
}
.price-feat li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--gold);
}

/* ========================= FAQ ========================= */
.faq { padding: 100px 0; max-width: 880px; margin: 0 auto; }

.faq-list {
  border-top: 1px solid var(--hairline);
}

.faq-item {
  border-bottom: 1px solid var(--hairline);
}
.faq-item > summary {
  padding: 20px 0;
  cursor: pointer;
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 700;
  color: var(--ivory);
  list-style: none;
  position: relative;
  padding-right: 32px;
  transition: color 0.2s;
}
.faq-item > summary::-webkit-details-marker { display: none; }
.faq-item > summary:hover { color: var(--gold); }
.faq-item > summary::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  color: var(--gold);
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 300;
  transition: transform 0.2s;
}
.faq-item[open] > summary::after { content: "−"; }
.faq-item > div {
  padding: 0 0 24px;
  color: var(--ivory-dim);
  font-size: 14.5px;
  line-height: 1.75;
  max-width: 680px;
}

/* ========================= Footer ========================= */
.footer {
  padding: 60px 0 40px;
  margin-top: 60px;
  border-top: 1px solid var(--hairline);
}
.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
  margin-bottom: 32px;
}
.footer-links {
  display: flex;
  gap: 28px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}
.footer-links a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--gold); }

.footer-hairline {
  height: 1px;
  background: var(--hairline);
  margin-bottom: 24px;
}

.footer-bottom { font-size: 12px; }
.disclaimer {
  color: var(--muted);
  margin-bottom: 8px;
  line-height: 1.7;
}
.copyright {
  color: var(--faded);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
}

/* ========================= 弹窗 ========================= */
.modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(5, 8, 15, 0.85);
  backdrop-filter: blur(4px);
}
.modal-box {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--hairline-strong);
  padding: 44px 40px 36px;
  width: 100%;
  max-width: 440px;
  box-shadow: 0 32px 80px rgba(0, 0, 0, 0.6);
  animation: modalIn 0.24s ease;
}
@keyframes modalIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}
.modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 32px;
  height: 32px;
  background: transparent;
  border: 1px solid var(--hairline);
  color: var(--ivory-dim);
  font-size: 18px;
  cursor: pointer;
  transition: all 0.15s;
  line-height: 1;
}
.modal-close:hover { border-color: var(--gold); color: var(--gold); }

.modal-eyebrow {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.3em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 10px;
}
.modal-box h2 {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 700;
  color: var(--ivory);
  margin-bottom: 8px;
  letter-spacing: -0.005em;
}
.modal-box .sub {
  color: var(--ivory-dim);
  font-size: 13.5px;
  margin-bottom: 24px;
}

.modal-box input {
  width: 100%;
  padding: 14px 16px;
  background: var(--ink);
  border: 1px solid var(--hairline-strong);
  border-radius: 2px;
  color: var(--ivory);
  font-size: 15px;
  font-family: var(--font-mono);
  letter-spacing: 4px;
  text-align: center;
  margin-bottom: 16px;
  outline: none;
  transition: border-color 0.15s;
}
.modal-box input:focus { border-color: var(--gold); }
.modal-box input::placeholder { color: var(--faded); letter-spacing: 2px; }

.msg { margin-top: 14px; font-size: 12.5px; text-align: center; min-height: 18px; font-family: var(--font-mono); letter-spacing: 0.04em; }
.msg.ok  { color: var(--bull); }
.msg.err { color: var(--bear); }

.buy-hint {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--hairline);
  text-align: center;
  font-size: 13px;
  color: var(--muted);
}
.buy-hint a { color: var(--gold); text-decoration: none; }
.buy-hint a:hover { color: var(--gold-soft); }

/* 购买弹窗 */
.qr-placeholder { text-align: center; margin: 20px 0; }
.qr-box {
  width: 180px;
  height: 180px;
  background: var(--ink);
  border: 1px solid var(--hairline-strong);
  margin: 0 auto 14px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
}
.qr-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--gold);
}
.qr-sub {
  font-size: 11px;
  color: var(--faded);
}
.qr-hint {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ivory-dim);
  letter-spacing: 0.05em;
}
.qr-hint code {
  background: var(--ink);
  padding: 3px 8px;
  font-size: 11px;
  color: var(--gold);
  border: 1px solid var(--hairline);
}
.price-mini {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--hairline);
  background: var(--hairline);
}
.price-mini > div {
  padding: 14px 10px;
  background: var(--surface);
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.price-mini strong {
  font-family: var(--font-serif);
  font-size: 18px;
  color: var(--gold);
  font-weight: 700;
}
.price-mini span {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  color: var(--muted);
  text-transform: uppercase;
}

/* ========================= 主应用 ========================= */
.app {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 32px 80px;
}

.app-header {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 22px 0;
  margin-bottom: 32px;
  border-bottom: 1px solid var(--hairline);
}
.app-header .btn-ghost { justify-self: start; }
.app-header-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  justify-self: center;
}
.app-header-brand .brand-name {
  font-size: 12px;
  letter-spacing: 0.3em;
}
.app-header-brand .brand-mark {
  width: 28px;
  height: 28px;
  font-size: 12px;
}

.quota-pill {
  justify-self: end;
  padding: 7px 14px;
  border: 1px solid var(--hairline-strong);
  color: var(--gold);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.app-hero {
  text-align: center;
  padding: 40px 0 48px;
}
.app-hero h2 {
  font-family: var(--font-serif);
  font-size: 36px;
  font-weight: 700;
  color: var(--ivory);
  margin: 12px 0 6px;
  letter-spacing: -0.01em;
}
.app-hero .subtle {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--muted);
  text-transform: uppercase;
}

.app-skills {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0;
  margin-bottom: 40px;
  border: 1px solid var(--hairline);
}
.app-skill {
  display: flex;
  align-items: center;
  gap: 18px;
  background: var(--surface);
  border: none;
  border-right: 1px solid var(--hairline);
  padding: 24px 22px;
  cursor: pointer;
  transition: background 0.2s;
  font-family: inherit;
  color: var(--ivory);
  text-align: left;
}
.app-skill:last-child { border-right: none; }
.app-skill:hover { background: var(--surface-2); }

.app-skill-no {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: -0.02em;
  flex-shrink: 0;
  min-width: 32px;
}
.app-skill h3 {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 700;
  color: var(--ivory);
  margin-bottom: 3px;
}
.app-skill p {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  color: var(--muted);
  text-transform: uppercase;
}

.app-input {
  background: var(--surface);
  border: 1px solid var(--hairline);
  padding: 28px 28px 24px;
  margin-bottom: 28px;
}
.selected-tip {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--hairline-2);
}
.app-input input {
  width: 100%;
  padding: 14px 16px;
  background: var(--ink);
  border: 1px solid var(--hairline-strong);
  border-radius: 2px;
  color: var(--ivory);
  font-size: 15px;
  font-family: var(--font-mono);
  letter-spacing: 0.08em;
  outline: none;
  margin-bottom: 16px;
}
.app-input input:focus { border-color: var(--gold); }
.app-input input::placeholder { color: var(--faded); }
.app-input-actions { display: flex; flex-direction: column; gap: 10px; }

.output {
  background: var(--surface);
  border: 1px solid var(--hairline);
}
.output-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 22px;
  background: var(--ink-soft);
  border-bottom: 1px solid var(--hairline);
  flex-wrap: wrap;
  gap: 10px;
}
.output-header #outputTitle {
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 700;
  color: var(--ivory);
}
.output-actions { display: flex; gap: 6px; }

.output-content {
  padding: 32px 36px;
  max-height: 72vh;
  overflow-y: auto;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--ivory-dim);
  word-wrap: break-word;
}

/* 研报正文排版 */
.output-content h1 {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 700;
  color: var(--ivory);
  margin: 24px 0 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--gold);
  letter-spacing: -0.01em;
}
.output-content h2 {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--gold);
  margin: 28px 0 12px;
  padding-left: 14px;
  border-left: 2px solid var(--gold);
}
.output-content h3 {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 700;
  color: var(--ivory);
  margin: 20px 0 10px;
}
.output-content p { margin: 10px 0; color: var(--ivory-dim); }
.output-content strong { color: var(--gold-soft); font-weight: 600; }
.output-content code {
  background: var(--ink);
  padding: 2px 7px;
  font-family: var(--font-mono);
  font-size: 0.88em;
  color: var(--gold-soft);
  border: 1px solid var(--hairline);
}
.output-content ul,
.output-content ol { padding-left: 22px; margin: 10px 0; }
.output-content li { margin: 4px 0; }

/* Markdown 表格——研报质感 */
.output-content .md-table {
  width: 100%;
  border-collapse: collapse;
  margin: 18px 0;
  font-size: 13px;
  border: 1px solid var(--hairline);
  display: block;
  overflow-x: auto;
}
.output-content .md-table thead {
  background: var(--ink);
}
.output-content .md-table th {
  padding: 11px 16px;
  text-align: left;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 11.5px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold);
  border-bottom: 1px solid var(--gold);
  white-space: nowrap;
}
.output-content .md-table td {
  padding: 11px 16px;
  border-bottom: 1px solid var(--hairline-2);
  color: var(--ivory-dim);
  vertical-align: top;
  font-variant-numeric: tabular-nums;
  line-height: 1.7;
}
.output-content .md-table tr:last-child td { border-bottom: none; }
.output-content .md-table tbody tr:hover { background: rgba(201, 169, 97, 0.03); }

.output-content .md-pre {
  background: var(--ink);
  border: 1px solid var(--hairline);
  padding: 16px 18px;
  margin: 14px 0;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--ivory-dim);
}
.output-content hr {
  border: none;
  border-top: 1px solid var(--hairline);
  margin: 24px 0;
}

.output-status {
  padding: 12px 22px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--muted);
  border-top: 1px solid var(--hairline);
  text-align: center;
  text-transform: uppercase;
  min-height: 16px;
}
.output-status.err { color: var(--bear); }

.app-footer { margin-top: 32px; text-align: center; }
.disclaimer-sm {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--faded);
  text-transform: uppercase;
}

/* 流式光标 */
.typing::after {
  content: "▊";
  animation: blink 1s infinite;
  color: var(--gold);
  margin-left: 2px;
}
@keyframes blink { 0%, 50% { opacity: 1; } 51%, 100% { opacity: 0; } }

/* ========================= 响应式 ========================= */
@media (max-width: 960px) {
  .nav-meta { display: none; }
  .nav-inner { grid-template-columns: auto 1fr; padding: 14px 20px; gap: 20px; }
}

@media (max-width: 720px) {
  .landing { padding: 0 20px; }
  .hero { padding: 56px 0 48px; }
  .hero-cta { flex-direction: column; width: 100%; }
  .hero-cta .btn { width: 100%; }
  .hero-meta { grid-template-columns: repeat(2, 1fr); padding: 20px 0; gap: 16px 0; }
  .hero-meta-item:nth-child(2)::after { display: none; }
  .features, .preview-section, .pricing, .faq { padding: 56px 0; }
  .feature-grid, .price-grid { grid-template-columns: 1fr; }
  .feature-card, .price-card { border-right: none; border-bottom: 1px solid var(--hairline); }
  .feature-card:last-child, .price-card:last-child { border-bottom: none; }
  .preview-body { padding: 18px 20px; }
  .preview-body pre { font-size: 11.5px; }
  .app-skills { grid-template-columns: 1fr; }
  .app-skill { border-right: none; border-bottom: 1px solid var(--hairline); }
  .app-skill:last-child { border-bottom: none; }
  .app { padding: 0 20px 60px; }
  .app-header { grid-template-columns: 1fr 1fr; }
  .app-header-brand { display: none; }
  .app-hero h2 { font-size: 26px; }
  .output-content { padding: 20px 18px; }
  .modal-box { padding: 36px 24px 28px; }
  .footer-top { flex-direction: column; align-items: flex-start; }
}