/**
 * Tokenproto 智能模型调度决策平台介绍页（/）
 * 独立于营销落地页，避免「立即试用」等上线导向文案。
 */

:root {
  --llm-bg: #f4f6fb;
  --llm-surface: #ffffff;
  --llm-ink: #0f172a;
  --llm-muted: #475569;
  --llm-line: rgba(15, 23, 42, 0.08);
  --llm-accent: #1d4ed8;
  --llm-accent-soft: #dbeafe;
  --llm-warn: #9a3412;
  --llm-warn-bg: #fff7ed;
  --llm-warn-line: #fdba74;
  --llm-max: 880px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  color-scheme: light;
}

body.llm-filing {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  color: var(--llm-ink);
  background: var(--llm-bg);
  line-height: 1.65;
}

.llm-skip {
  position: absolute;
  left: 12px;
  top: -40px;
  z-index: 20;
  padding: 8px 12px;
  background: #0f172a;
  color: #fff;
  border-radius: 6px;
  text-decoration: none;
}

.llm-skip:focus {
  top: 12px;
}

.llm-header {
  background: var(--llm-surface);
  border-bottom: 1px solid var(--llm-line);
}

.llm-header-inner {
  max-width: var(--llm-max);
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.llm-header .landing-logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.llm-header .landing-logo-icon {
  display: inline-flex;
  align-items: center;
  line-height: 0;
}

.llm-header .landing-logo-img {
  display: block;
  height: 36px;
  width: auto;
  max-width: 180px;
  object-fit: contain;
  object-position: left center;
}

.llm-header-tag {
  margin: 0;
  font-size: 13px;
  color: var(--llm-muted);
}

.llm-status {
  background: var(--llm-warn-bg);
  border-bottom: 1px solid var(--llm-warn-line);
}

.llm-status-inner {
  max-width: var(--llm-max);
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  align-items: baseline;
  color: var(--llm-warn);
  font-size: 15px;
}

.llm-status strong {
  font-weight: 700;
}

.llm-main {
  flex: 1;
  width: 100%;
  max-width: var(--llm-max);
  margin: 0 auto;
  padding: 36px 20px 56px;
}

.llm-hero {
  margin-bottom: 28px;
}

.llm-eyebrow {
  display: inline-block;
  margin: 0 0 12px;
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--llm-accent);
  background: var(--llm-accent-soft);
  border-radius: 999px;
}

.llm-hero h1 {
  margin: 0 0 14px;
  font-size: clamp(1.45rem, 3vw, 2rem);
  line-height: 1.3;
  letter-spacing: -0.02em;
}

.llm-prose {
  margin: 0 0 16px;
  color: var(--llm-muted);
  font-size: 1.02rem;
  text-align: justify;
}

.llm-wait {
  margin: 0;
  color: var(--llm-warn);
  font-weight: 600;
}

.llm-card {
  background: var(--llm-surface);
  border: 1px solid var(--llm-line);
  border-radius: 16px;
  padding: 24px;
  margin-bottom: 20px;
}

.llm-card h2,
.llm-notice h2 {
  margin: 0 0 16px;
  font-size: 1.15rem;
}

.llm-strategy {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: llm-step;
}

.llm-strategy li {
  counter-increment: llm-step;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  background: #f8fafc;
  border: 1px solid var(--llm-line);
  color: var(--llm-ink);
  font-size: 0.9rem;
  font-weight: 600;
}

.llm-strategy li::before {
  content: counter(llm-step);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.35em;
  height: 1.35em;
  border-radius: 50%;
  background: var(--llm-accent);
  color: #fff;
  font-size: 0.75rem;
  font-variant-numeric: tabular-nums;
}

.llm-strategy li:not(:last-child)::after {
  content: "→";
  color: var(--llm-accent);
  font-weight: 700;
}

.llm-notice {
  padding: 24px;
  border-radius: 16px;
  background: var(--llm-warn-bg);
  border: 1px solid var(--llm-warn-line);
  color: var(--llm-warn);
}

.llm-notice p {
  margin: 0 0 8px;
}

.llm-notice p:last-child {
  margin-bottom: 0;
}

.llm-footer {
  margin-top: auto;
  background: #0f172a;
  color: rgba(255, 255, 255, 0.88);
}

.llm-footer-inner {
  max-width: var(--llm-max);
  margin: 0 auto;
  padding: 16px 20px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 16px;
}

.llm-copyright {
  margin: 0;
  font-size: 13px;
}

.llm-icp {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.82);
  text-decoration: none;
}

.llm-icp:hover,
.llm-icp:focus-visible {
  color: #fff;
  text-decoration: underline;
}