/* ==========================================================================
   ShopMinds AI — Design Tokens & Shared Components
   Light SaaS + Dark Hero
   所有页面统一引用，禁止在各页面重复定义品牌色与圆角。
   ========================================================================== */

:root {
  /* Surfaces */
  --sm-bg: #F7F9FC;
  --sm-surface: #FFFFFF;
  --sm-surface-2: #F1F5F9;
  --sm-surface-3: #E9EEF5;
  --sm-dark: #0B1020;
  --sm-dark-2: #151C33;
  --sm-dark-3: #1E2742;

  /* Text */
  --sm-text: #0F172A;
  --sm-text-2: #64748B;
  --sm-text-3: #94A3B8;
  --sm-invert: #F8FAFC;
  --sm-invert-2: #A9B4CC;
  --sm-invert-3: #7C89A6;

  /* Brand */
  --sm-brand: #4F46E5;
  --sm-brand-light: #6366F1;
  --sm-brand-purple: #7C3AED;
  --sm-brand-soft: #EEF0FF;
  --sm-accent: #06B6D4;
  --sm-accent-soft: #E0F7FB;
  --sm-success: #16A34A;
  --sm-success-soft: #E8F7EE;
  --sm-warning: #F59E0B;
  --sm-warning-soft: #FEF4E4;
  --sm-danger: #DC2626;

  /* Lines */
  --sm-border: #E2E8F0;
  --sm-border-strong: #CBD5E1;
  --sm-border-dark: rgba(255, 255, 255, .10);
  --sm-border-dark-strong: rgba(255, 255, 255, .18);

  /* Radius */
  --sm-radius-card: 16px;
  --sm-radius-card-lg: 18px;
  --sm-radius-btn: 11px;
  --sm-radius-sm: 8px;
  --sm-radius-pill: 999px;

  /* Elevation */
  --sm-shadow-xs: 0 1px 2px rgba(15, 23, 42, .05);
  --sm-shadow-sm: 0 2px 8px -4px rgba(15, 23, 42, .10), 0 1px 2px rgba(15, 23, 42, .04);
  --sm-shadow: 0 12px 32px -20px rgba(15, 23, 42, .28), 0 2px 6px -3px rgba(15, 23, 42, .08);
  --sm-shadow-lg: 0 32px 70px -40px rgba(15, 23, 42, .42);
  --sm-shadow-brand: 0 14px 30px -16px rgba(79, 70, 229, .55);

  /* Typography */
  --sm-font: "DM Sans", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --sm-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;

  /* Layout */
  --sm-shell: 1180px;
  --sm-shell-narrow: 980px;

  /* Motion */
  --sm-ease: cubic-bezier(.22, .61, .36, 1);
  --sm-dur: .22s;
}

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

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

body.sm-page {
  margin: 0;
  background: var(--sm-bg);
  color: var(--sm-text);
  font-family: var(--sm-font);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.sm-page h1,
body.sm-page h2,
body.sm-page h3,
body.sm-page h4 {
  margin: 0;
  font-weight: 700;
  letter-spacing: -.018em;
  line-height: 1.22;
}

body.sm-page p { margin: 0; }
body.sm-page a { color: inherit; text-decoration: none; }

/* 链接基础规则 body.sm-page a 的优先级高于单个 .sm-btn--* 类，
   会覆盖按钮自身的文字颜色（深色按钮会变成深底深字）。
   这里显式提高这几个「深底按钮」的优先级。 */
body.sm-page a.sm-btn--primary,
body.sm-page a.sm-btn--dark,
body.sm-page a.sm-btn--light,
body.sm-page .sm-btn--primary,
body.sm-page .sm-btn--dark,
body.sm-page .sm-btn--light { color: #fff; }

body.sm-page img { max-width: 100%; display: block; }
body.sm-page button { font: inherit; color: inherit; }

body.sm-page :focus-visible {
  outline: 2px solid var(--sm-brand);
  outline-offset: 2px;
  border-radius: 6px;
}

.sm-sr {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* --------------------------------------------------------------------- *
 * Layout
 * --------------------------------------------------------------------- */
.sm-shell {
  width: 100%;
  max-width: var(--sm-shell);
  margin: 0 auto;
  padding: 0 24px;
}

.sm-section { padding: 76px 0; }
.sm-section--tight { padding: 52px 0; }

.sm-section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 30px;
}

.sm-section-head__text { max-width: 660px; }

.sm-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .10em;
  text-transform: uppercase;
  color: var(--sm-brand);
  margin-bottom: 12px;
}

.sm-eyebrow::before {
  content: "";
  width: 18px; height: 2px;
  border-radius: 2px;
  background: var(--sm-brand);
}

.sm-h1 { font-size: clamp(32px, 4.2vw, 54px); }
.sm-h2 { font-size: clamp(24px, 2.6vw, 34px); }
.sm-h3 { font-size: clamp(18px, 1.6vw, 21px); }

.sm-lead {
  font-size: clamp(15px, 1.15vw, 17px);
  color: var(--sm-text-2);
  line-height: 1.72;
}

.sm-muted { color: var(--sm-text-2); }
.sm-small { font-size: 13px; }

/* --------------------------------------------------------------------- *
 * Buttons
 * --------------------------------------------------------------------- */
.sm-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 42px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: var(--sm-radius-btn);
  font-size: 14.5px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: transform var(--sm-dur) var(--sm-ease),
              background-color var(--sm-dur) var(--sm-ease),
              box-shadow var(--sm-dur) var(--sm-ease),
              border-color var(--sm-dur) var(--sm-ease),
              color var(--sm-dur) var(--sm-ease);
}

.sm-btn:hover { transform: translateY(-1px); }
.sm-btn:active { transform: translateY(0); }
.sm-btn:disabled { opacity: .6; cursor: not-allowed; transform: none; }

.sm-btn--primary {
  background: var(--sm-brand);
  color: #fff;
  box-shadow: var(--sm-shadow-brand);
}
.sm-btn--primary:hover { background: var(--sm-brand-light); }

.sm-btn--outline {
  background: var(--sm-surface);
  border-color: var(--sm-border-strong);
  color: var(--sm-text);
}
.sm-btn--outline:hover { border-color: var(--sm-brand); color: var(--sm-brand); }

.sm-btn--ghost {
  background: transparent;
  color: var(--sm-text-2);
}
.sm-btn--ghost:hover { color: var(--sm-text); background: var(--sm-surface-2); }

.sm-btn--dark {
  background: var(--sm-dark);
  color: #fff;
}
.sm-btn--dark:hover { background: var(--sm-dark-3); }

.sm-btn--light {
  background: rgba(255, 255, 255, .10);
  border-color: var(--sm-border-dark-strong);
  color: #fff;
}
.sm-btn--light:hover { background: rgba(255, 255, 255, .18); }

.sm-btn--lg { min-height: 50px; padding: 0 24px; font-size: 15.5px; border-radius: 12px; }
.sm-btn--sm { min-height: 34px; padding: 0 13px; font-size: 13px; border-radius: 9px; }
.sm-btn--block { width: 100%; }

/* --------------------------------------------------------------------- *
 * Chips / Badges
 * --------------------------------------------------------------------- */
.sm-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 14px;
  border: 1px solid var(--sm-border);
  border-radius: var(--sm-radius-pill);
  background: var(--sm-surface);
  color: var(--sm-text-2);
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--sm-dur) var(--sm-ease);
}

.sm-chip:hover { border-color: var(--sm-brand); color: var(--sm-brand); }

.sm-chip.is-active {
  background: var(--sm-brand);
  border-color: var(--sm-brand);
  color: #fff;
}

.sm-chip__count {
  font-size: 11.5px;
  opacity: .7;
  font-variant-numeric: tabular-nums;
}

.sm-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 9px;
  border-radius: var(--sm-radius-pill);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .01em;
}

.sm-badge--featured { background: var(--sm-brand-soft); color: var(--sm-brand); }
.sm-badge--new      { background: var(--sm-accent-soft); color: #0E7490; }
.sm-badge--beta     { background: var(--sm-warning-soft); color: #B45309; }
.sm-badge--free     { background: var(--sm-success-soft); color: #15803D; }

.sm-tag {
  display: inline-flex;
  padding: 4px 10px;
  border-radius: var(--sm-radius-pill);
  background: var(--sm-surface-2);
  color: var(--sm-text-2);
  font-size: 12px;
  font-weight: 600;
}

/* --------------------------------------------------------------------- *
 * Agent Card（首页与智能体超市共用）
 * --------------------------------------------------------------------- */
.sm-agent-card {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 20px;
  border: 1px solid var(--sm-border);
  border-radius: var(--sm-radius-card);
  background: var(--sm-surface);
  box-shadow: var(--sm-shadow-xs);
  transition: transform var(--sm-dur) var(--sm-ease),
              box-shadow var(--sm-dur) var(--sm-ease),
              border-color var(--sm-dur) var(--sm-ease);
}

.sm-agent-card:hover {
  transform: translateY(-3px);
  border-color: #D6DDF0;
  box-shadow: var(--sm-shadow);
}

.sm-agent-card__top {
  display: flex;
  align-items: flex-start;
  gap: 13px;
}

.sm-agent-card__icon {
  flex: 0 0 auto;
  width: 46px; height: 46px;
  display: grid;
  place-items: center;
  border-radius: 13px;
  font-size: 17px;
  font-weight: 700;
  color: #fff;
  background: var(--sm-brand);
}

.sm-agent-card__icon[data-tone="violet"] { background: linear-gradient(140deg, var(--sm-brand), var(--sm-brand-purple)); }
.sm-agent-card__icon[data-tone="blue"]   { background: linear-gradient(140deg, #2563EB, #0891B2); }
.sm-agent-card__icon[data-tone="orange"] { background: linear-gradient(140deg, #F97316, #EA580C); }
.sm-agent-card__icon[data-tone="cyan"]   { background: linear-gradient(140deg, var(--sm-accent), #0E7490); }
.sm-agent-card__icon[data-tone="slate"]  { background: linear-gradient(140deg, #475569, #1E293B); }

.sm-agent-card__heading { min-width: 0; flex: 1; }

.sm-agent-card__name {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -.01em;
  margin-bottom: 3px;
}

.sm-agent-card__cat {
  font-size: 12.5px;
  color: var(--sm-text-3);
  font-weight: 600;
}

.sm-agent-card__desc {
  font-size: 14px;
  line-height: 1.62;
  color: var(--sm-text-2);
  flex: 1;
}

.sm-agent-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.sm-agent-card__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 14px;
  border-top: 1px solid var(--sm-border);
}

.sm-price {
  display: flex;
  align-items: baseline;
  gap: 5px;
  font-size: 15px;
  font-weight: 700;
  color: var(--sm-text);
  font-variant-numeric: tabular-nums;
}

.sm-price__unit { font-size: 12px; font-weight: 600; color: var(--sm-text-3); }

.sm-agent-card__actions { display: flex; gap: 8px; }

/* 横向滚动轨道 */
.sm-rail {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(300px, 1fr);
  gap: 18px;
  overflow-x: auto;
  padding: 4px 4px 18px;
  margin: 0 -4px;
  scroll-snap-type: x mandatory;
  scrollbar-width: thin;
}

.sm-rail > * { scroll-snap-align: start; }

.sm-rail::-webkit-scrollbar { height: 8px; }
.sm-rail::-webkit-scrollbar-thumb { background: var(--sm-border-strong); border-radius: 99px; }
.sm-rail::-webkit-scrollbar-track { background: transparent; }

/* 网格 */
.sm-agent-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(288px, 1fr));
  gap: 18px;
}

.sm-empty {
  padding: 56px 24px;
  border: 1px dashed var(--sm-border-strong);
  border-radius: var(--sm-radius-card);
  background: var(--sm-surface);
  text-align: center;
  color: var(--sm-text-2);
}

.sm-empty b { display: block; font-size: 16px; color: var(--sm-text); margin-bottom: 6px; }

/* --------------------------------------------------------------------- *
 * Responsive
 * --------------------------------------------------------------------- */

/* --------------------------------------------------------------------- *
 * Site chrome：导航与页脚（全站共用）
 * --------------------------------------------------------------------- */
.sm-nav {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(255, 255, 255, .88);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--sm-border);
}

.sm-nav__inner {
  display: flex;
  align-items: center;
  gap: 28px;
  min-height: 68px;
}

.sm-nav__brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -.02em;
  flex: 0 0 auto;
}

.sm-nav__brand img { width: 27px; height: 27px; border-radius: 7px; }
.sm-nav__brand em { font-style: normal; color: var(--sm-brand); }

.sm-nav__links {
  display: flex;
  align-items: center;
  gap: 26px;
  flex: 1;
}

.sm-nav__links a {
  font-size: 14.5px;
  font-weight: 600;
  color: var(--sm-text-2);
  transition: color var(--sm-dur) var(--sm-ease);
}

.sm-nav__links a:hover { color: var(--sm-text); }
.sm-nav__links a.is-active { color: var(--sm-brand); }

.sm-nav__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

.sm-nav__lang {
  min-width: 52px;
  height: 32px;
  padding: 0 10px;
  border: 1px solid var(--sm-border);
  border-radius: var(--sm-radius-sm);
  background: var(--sm-surface);
  color: var(--sm-text-2);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}

.language-select {
  height: 32px;
  padding: 0 8px;
  border: 1px solid var(--sm-border);
  border-radius: var(--sm-radius-sm);
  background: var(--sm-surface);
  color: var(--sm-text-2);
  font: 600 13px var(--sm-font);
  cursor: pointer;
}

.sm-nav__menu {
  display: none;
  width: 38px; height: 38px;
  border: 1px solid var(--sm-border);
  border-radius: var(--sm-radius-sm);
  background: var(--sm-surface);
  cursor: pointer;
}

.sm-footer {
  padding: 56px 0 28px;
  background: var(--sm-dark);
  color: var(--sm-invert);
}

.sm-footer__grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 32px;
  padding-bottom: 34px;
  border-bottom: 1px solid var(--sm-border-dark);
}

.sm-footer .sm-nav__brand { color: #fff; }
.sm-footer__grid p { color: var(--sm-invert-2); margin-top: 12px; max-width: 340px; line-height: 1.7; }

.sm-footer__grid > div > b {
  display: block;
  font-size: 13px;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--sm-invert-3);
  margin-bottom: 14px;
}

.sm-footer__grid a:not(.sm-nav__brand) {
  display: block;
  font-size: 14px;
  color: var(--sm-invert-2);
  padding: 5px 0;
  transition: color var(--sm-dur) var(--sm-ease);
}

.sm-footer__grid a:not(.sm-nav__brand):hover { color: #fff; }

.sm-footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 22px;
  font-size: 13px;
  color: var(--sm-invert-3);
  flex-wrap: wrap;
}

@media (max-width: 900px) {
  .sm-nav__links {
    display: none;
    position: absolute;
    top: 68px; left: 0; right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    padding: 16px 24px 22px;
    background: var(--sm-surface);
    border-bottom: 1px solid var(--sm-border);
    box-shadow: var(--sm-shadow);
  }

  .sm-nav__links.is-open { display: flex; }
  .sm-nav__links a { padding: 9px 0; font-size: 15px; }
  .sm-nav__menu { display: grid; place-items: center; margin-left: auto; }
  .sm-nav__inner { gap: 14px; }
  .sm-nav__actions .sm-btn--ghost { display: none; }

  .sm-footer__grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 560px) {
  .sm-footer__grid { grid-template-columns: 1fr; gap: 26px; }
  .sm-nav__actions .sm-btn--primary { padding: 0 12px; }
}

@media (max-width: 900px) {
  .sm-section { padding: 56px 0; }
  .sm-section-head { flex-direction: column; align-items: flex-start; gap: 14px; }
  .sm-rail { grid-auto-columns: minmax(272px, 84%); }
}

@media (max-width: 560px) {
  .sm-shell { padding: 0 18px; }
  .sm-section { padding: 44px 0; }
  .sm-agent-grid { grid-template-columns: 1fr; }
  .sm-btn--lg { min-height: 46px; padding: 0 20px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    transition-duration: .001ms !important;
  }
}