@import url("https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500&family=IBM+Plex+Sans:wght@400;500;600&family=Noto+Sans+SC:wght@400;500;600&family=Noto+Serif+SC:wght@500;600;700&display=swap");

/* 科施博 — 工业 B2B 视觉系统（克制、纸感、钢灰点缀） */
:root {
  --ink: #0c0d10;
  --ink-muted: #5c5f68;
  --ink-faint: #8b8f98;
  --surface: #f5f4f0;
  --surface-elevated: #fdfcfa;
  --line: rgba(12, 13, 16, 0.09);
  --line-strong: rgba(12, 13, 16, 0.16);
  --header-bg: #090a0c;
  --header-border: rgba(255, 255, 255, 0.06);
  --accent: #5e6f7c;
  --accent-hover: #4a5863;
  --chart-blue: #2f6fdf;
  --chart-teal: #2aa198;
  --chart-amber: #b58900;
  --chart-rose: #d33682;
  --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.06);
  --white: #ffffff;
  --font-sans: "Noto Sans SC", "IBM Plex Sans", -apple-system, system-ui, sans-serif;
  --font-serif: "Noto Serif SC", "Noto Serif", Georgia, serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
  --max-w: 1120px;
  --header-h: 64px;
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

main section[id] {
  scroll-margin-top: calc(var(--header-h) + 0.75rem);
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--surface);
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--accent-hover);
  text-decoration: none;
  transition: color 0.15s var(--ease);
}

a:hover {
  color: var(--ink);
}

.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
}

abbr.term {
  font-style: normal;
  border-bottom: 1px dotted var(--ink-faint);
  cursor: help;
}

/* 品牌缩写「读法」：区分 openOPC（一人公司语境）与 OPC UA（协议） */
.lexicon-note {
  --lexicon-accent: var(--chart-blue);
  margin: 0;
  padding: 0.7rem 1rem 0.75rem 0.95rem;
  border-left: 3px solid var(--lexicon-accent);
  border-radius: 0 8px 8px 0;
  background: rgba(47, 111, 223, 0.06);
}

.lexicon-note__tag {
  margin: 0 0 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.lexicon-note__body {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--ink-muted);
}

.lexicon-note__body strong {
  color: var(--ink);
  font-weight: 600;
}

.lexicon-note--sheet {
  max-width: 42rem;
  margin-bottom: 1.25rem;
  background: var(--surface-elevated);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-soft);
}

.lexicon-note--hero {
  --lexicon-accent: rgba(126, 182, 255, 0.85);
  margin-top: 1.1rem;
  max-width: 38rem;
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.lexicon-note--hero .lexicon-note__tag {
  color: rgba(255, 255, 255, 0.38);
}

.lexicon-note--hero .lexicon-note__body {
  color: rgba(255, 255, 255, 0.58);
}

.lexicon-note--hero .lexicon-note__body strong {
  color: rgba(255, 255, 255, 0.9);
}

.lexicon-note--hero a {
  color: rgba(165, 205, 255, 0.98);
  text-decoration: underline;
  text-decoration-color: rgba(165, 205, 255, 0.35);
  text-underline-offset: 3px;
}

.lexicon-note--hero a:hover {
  color: #fff;
  text-decoration-color: rgba(255, 255, 255, 0.45);
}

.lexicon-note--hero abbr.term {
  border-bottom-color: rgba(255, 255, 255, 0.35);
  color: rgba(255, 255, 255, 0.75);
}

.card-lex-hint {
  margin: 0.35rem 0 0;
  font-size: 0.6875rem;
  line-height: 1.45;
  color: var(--ink-faint);
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

.card-lex-hint a {
  font-family: var(--font-sans);
  letter-spacing: 0;
}

#opc-naming {
  scroll-margin-top: calc(var(--header-h) + 1rem);
}

/* 页头 */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-h);
  background: var(--header-bg);
  border-bottom: 1px solid var(--header-border);
  z-index: 1000;
  overflow: visible;
}

.site-header .container {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  overflow: visible;
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  line-height: 0;
}

.lang-switch--abs {
  position: absolute;
  right: 1.35rem;
  top: 50%;
  transform: translateY(-50%);
  z-index: 1002;
}

/* Dropdown: toggle shows current flag; menu anchored below (does not widen the nav row) */
.lang-switch--dropdown {
  align-items: center;
  position: relative;
}

.lang-switch__toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.28rem;
  min-width: 2rem;
  height: 1.75rem;
  padding: 0 0.35rem 0 0.28rem;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
  cursor: pointer;
  transition: background 0.15s var(--ease), border-color 0.15s var(--ease);
}

.lang-switch__toggle:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.22);
}

.lang-switch--dropdown.is-open .lang-switch__toggle {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.28);
}

.lang-switch__toggle-flags {
  position: relative;
  width: 16px;
  height: 11px;
}

.lang-switch__toggle-flags .lang-switch__flag {
  position: absolute;
  inset: 0;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.12s var(--ease);
}

.lang-switch--current-zh .lang-switch__toggle-flags .lang-switch__flag--zh,
.lang-switch--current-en .lang-switch__toggle-flags .lang-switch__flag--en {
  opacity: 1;
}

.lang-switch__caret {
  width: 0;
  height: 0;
  border-left: 3px solid transparent;
  border-right: 3px solid transparent;
  border-top: 4px solid rgba(255, 255, 255, 0.45);
  flex-shrink: 0;
}

.lang-switch--dropdown.is-open .lang-switch__caret {
  border-top-color: rgba(255, 255, 255, 0.75);
}

.lang-switch__menu {
  list-style: none;
  position: absolute;
  top: calc(100% + 0.28rem);
  right: 0;
  margin: 0;
  padding: 0.2rem;
  min-width: 9.5rem;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(22, 24, 28, 0.96);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
  z-index: 1005;
}

.lang-switch__menu-item {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  width: 100%;
  padding: 0.35rem 0.45rem;
  border: none;
  border-radius: 6px;
  background: transparent;
  color: rgba(255, 255, 255, 0.88);
  font-size: 0.75rem;
  cursor: pointer;
  text-align: left;
  transition: background 0.12s var(--ease);
}

.lang-switch__menu-item:hover {
  background: rgba(255, 255, 255, 0.08);
}

.lang-switch__menu-item .lang-switch__flag {
  flex-shrink: 0;
}

.lang-switch__menu-item .lang-switch__label {
  font-size: 0.75rem;
  letter-spacing: 0.02em;
}

/* 桌面：语言切换进文档流，避免绝对定位盖住末项导航（仅靠 ul padding 易失效） */
@media (min-width: 1025px) {
  .site-header .container {
    justify-content: flex-start;
    gap: 0.75rem;
  }

  .site-header .brand {
    order: 1;
    flex-shrink: 0;
  }

  .site-header .container > nav {
    order: 2;
    margin-left: auto;
    flex-shrink: 0;
  }

  .lang-switch--abs {
    position: static;
    right: auto;
    top: auto;
    transform: none;
    z-index: auto;
    order: 3;
    flex-shrink: 0;
  }
}

@media (max-width: 1024px) {
  .lang-switch--abs {
    right: 3.35rem;
  }
}

.lang-switch__flag {
  display: flex;
  line-height: 0;
  border-radius: 2px;
  overflow: hidden;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.25);
}

.lang-switch__flag svg {
  display: block;
  width: 16px;
  height: 11px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--white);
  font-weight: 500;
  font-size: 0.9375rem;
  letter-spacing: 0.04em;
}

.brand img {
  width: 36px;
  height: 36px;
  border-radius: 4px;
}

.nav-primary {
  display: flex;
  align-items: center;
  gap: 0.125rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-primary a {
  display: block;
  padding: 0.45rem 0.5rem;
  color: rgba(255, 255, 255, 0.62);
  font-size: 0.8125rem;
  font-weight: 450;
  letter-spacing: 0.02em;
  border-radius: 2px;
  transition: color 0.15s var(--ease);
}

.nav-primary a:hover,
.nav-primary a[aria-current="page"] {
  color: rgba(255, 255, 255, 0.95);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 1.5px;
  background: rgba(255, 255, 255, 0.85);
}

@media (max-width: 1024px) {
  .nav-toggle {
    display: flex;
  }

  .nav-primary {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background: var(--header-bg);
    padding: 0.5rem 1rem 1rem;
    gap: 0;
    border-bottom: 1px solid var(--header-border);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    pointer-events: none;
    transition: max-height 0.35s var(--ease), opacity 0.2s var(--ease);
  }

  .nav-primary.is-open {
    max-height: 480px;
    opacity: 1;
    pointer-events: auto;
  }

  .nav-primary a {
    padding: 0.7rem 0.25rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  }
}

main {
  padding-top: var(--header-h);
}

/* Hero */
.hero {
  position: relative;
  background: #0a0b0d;
  color: var(--white);
  padding: 4rem 0 4.5rem;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.028) 1px, transparent 1px);
  background-size: 56px 56px;
  pointer-events: none;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.5), transparent 85%);
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr minmax(17.5rem, 1.12fr);
  gap: 2.25rem;
  align-items: start;
}

@media (max-width: 960px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 1.75rem;
    align-items: start;
  }
}

.hero-arch {
  margin-top: 0;
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.42);
  margin: 0 0 1.25rem;
}

.hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.65rem, 4.2vw, 2.15rem);
  font-weight: 600;
  letter-spacing: 0.02em;
  margin: 0 0 1.25rem;
  line-height: 1.28;
  max-width: 18em;
  color: rgba(255, 255, 255, 0.96);
}

.hero-lead {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.55);
  max-width: 36rem;
  margin: 0 0 1.5rem;
}

.hero-bullets {
  margin: 0 0 2rem;
  padding: 0;
  list-style: none;
  max-width: 38rem;
}

.hero-bullets li {
  position: relative;
  padding-left: 1rem;
  margin-bottom: 0.5rem;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.62);
  line-height: 1.55;
}

.hero-bullets li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 4px;
  height: 4px;
  background: rgba(255, 255, 255, 0.35);
  border-radius: 1px;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem 1rem;
}

.hero-arch {
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 6px;
  padding: 0.85rem 0.95rem;
  background: rgba(255, 255, 255, 0.035);
  box-shadow: 0 22px 50px rgba(0, 0, 0, 0.38);
  width: 100%;
}

@media (min-width: 961px) {
  .hero-arch {
    padding: 0.75rem 0.85rem;
  }
}

.hero-arch:hover {
  border-color: rgba(255, 255, 255, 0.2);
}

.hero-arch .caption {
  margin-top: 0.65rem;
  font-family: var(--font-mono);
  font-size: clamp(0.68rem, 1.1vw, 0.78rem);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.38);
  text-align: center;
}

.hero-arch svg {
  width: 100%;
  height: auto;
  display: block;
}

.page-jump {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem 0.95rem;
  padding-top: 0.55rem;
  padding-bottom: 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--ink-muted);
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}

.page-jump a {
  color: var(--accent);
  text-decoration: none;
  white-space: nowrap;
}

.page-jump a:hover {
  color: var(--ink);
  text-decoration: underline;
}

@media (max-width: 640px) {
  .page-jump {
    gap: 0.35rem 0.65rem;
    font-size: 0.54rem;
  }
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.55rem 1.1rem;
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  border-radius: 2px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.15s var(--ease), border-color 0.15s var(--ease), color 0.15s var(--ease);
}

.btn-primary {
  background: var(--white);
  color: var(--ink);
  border-color: var(--white);
}

.btn-primary:hover {
  background: rgba(255, 255, 255, 0.92);
  color: var(--ink);
}

.btn-outline-light {
  background: transparent;
  color: rgba(255, 255, 255, 0.88);
  border-color: rgba(255, 255, 255, 0.22);
}

.btn-outline-light:hover {
  border-color: rgba(255, 255, 255, 0.45);
  background: rgba(255, 255, 255, 0.04);
}

.btn-text-light {
  background: none;
  border: none;
  color: rgba(255, 255, 255, 0.5);
  padding: 0.55rem 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
}

.btn-text-light:hover {
  color: rgba(255, 255, 255, 0.85);
}

.btn-dark {
  background: var(--ink);
  color: var(--white);
  border-color: var(--ink);
}

.btn-dark:hover {
  background: #1a1c22;
  color: var(--white);
}

.btn-ghost {
  background: var(--surface-elevated);
  color: var(--ink);
  border: 1px solid var(--line-strong);
}

.btn-ghost:hover {
  border-color: var(--ink);
  background: var(--white);
}

/* 兼容旧类名 */
.btn-gold {
  background: transparent;
  color: rgba(255, 255, 255, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.18);
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.btn-gold:hover {
  color: rgba(255, 255, 255, 0.9);
  border-color: rgba(255, 255, 255, 0.35);
}

/* 区块 */
.section {
  padding: 4rem 0;
}

.section-tight {
  padding: 2.75rem 0;
}

.section--paper {
  background: var(--surface-elevated);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-head {
  margin-bottom: 2.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}

.section-kicker {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 0 0 0.5rem;
}

.section-head h2 {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--ink);
  margin: 0 0 0.65rem;
  letter-spacing: 0.02em;
}

.section-head p {
  margin: 0;
  color: var(--ink-muted);
  max-width: 38rem;
  font-size: 0.9375rem;
}

/* 交付栅格（替代浮夸数字条） */
.deliver-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: 1px solid var(--line);
  border-radius: 2px;
  overflow: hidden;
}

@media (max-width: 800px) {
  .deliver-grid {
    grid-template-columns: 1fr;
  }
}

.deliver-cell {
  padding: 1.35rem 1.5rem;
  border-right: 1px solid var(--line);
  background: var(--surface-elevated);
}

.deliver-grid .deliver-cell:last-child {
  border-right: none;
}

@media (max-width: 800px) {
  .deliver-cell {
    border-right: none;
    border-bottom: 1px solid var(--line);
  }
  .deliver-grid .deliver-cell:last-child {
    border-bottom: none;
  }
}

.deliver-cell h3 {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 0.65rem;
}

.deliver-cell p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--ink-muted);
  line-height: 1.6;
}

/* 图标与面板 */
.icon-badge {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--surface);
  border: 1px solid var(--line);
}

.icon-badge svg {
  width: 18px;
  height: 18px;
  display: block;
}

/* 客户案例：标题行 + 图标 */
.case-card__header {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 0.85rem;
}

.case-card__header h2 {
  margin: 0;
  flex: 1;
  line-height: 1.3;
  padding-top: 0.2rem;
}

.case-card__icon {
  flex-shrink: 0;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
}

.case-card__icon svg {
  width: 20px;
  height: 20px;
  display: block;
}

.case-card__icon svg path,
.case-card__icon svg circle,
.case-card__icon svg rect {
  fill: none;
  stroke: currentColor;
}

.case-card__icon--teal {
  color: var(--chart-teal);
  background: rgba(42, 161, 152, 0.11);
  border-color: rgba(42, 161, 152, 0.28);
}

.case-card__icon--blue {
  color: var(--chart-blue);
  background: rgba(47, 111, 223, 0.1);
  border-color: rgba(47, 111, 223, 0.22);
}

.case-card__icon--rose {
  color: var(--chart-rose);
  background: rgba(211, 54, 130, 0.09);
  border-color: rgba(211, 54, 130, 0.22);
}

/* 关于我们：链接行 + 图标 */
.link-list--icons a {
  justify-content: flex-start;
  gap: 0.85rem;
}

.link-list__icon-wrap {
  flex-shrink: 0;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  background: var(--surface);
}

.link-list__icon-wrap svg {
  width: 18px;
  height: 18px;
  display: block;
}

.link-list__icon-wrap svg path,
.link-list__icon-wrap svg circle,
.link-list__icon-wrap svg rect,
.link-list__icon-wrap svg line,
.link-list__icon-wrap svg polyline {
  fill: none;
  stroke: currentColor;
}

.link-list--icons .link-list__text {
  flex: 1;
  text-align: left;
}

.link-list--icons .link-list__chev {
  margin-left: auto;
  color: var(--ink-faint);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
}

.link-list--icons li:nth-child(1) .link-list__icon-wrap {
  color: var(--chart-blue);
  background: rgba(47, 111, 223, 0.08);
  border-color: rgba(47, 111, 223, 0.2);
}

.link-list--icons li:nth-child(2) .link-list__icon-wrap {
  color: var(--chart-teal);
  background: rgba(42, 161, 152, 0.09);
  border-color: rgba(42, 161, 152, 0.24);
}

.link-list--icons li:nth-child(3) .link-list__icon-wrap {
  color: var(--chart-amber);
  background: rgba(181, 137, 0, 0.1);
  border-color: rgba(181, 137, 0, 0.28);
}

.link-list--icons li:nth-child(4) .link-list__icon-wrap {
  color: var(--chart-rose);
  background: rgba(211, 54, 130, 0.09);
  border-color: rgba(211, 54, 130, 0.22);
}

/* 带图标的链接块：副文案与主行文字左缘对齐 */
.link-list--icons .link-list__block .link-list__sub {
  padding-left: calc(1.25rem + 2.5rem + 0.85rem);
}

.panel-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 2px;
  overflow: hidden;
}

@media (max-width: 900px) {
  .panel-grid {
    grid-template-columns: 1fr;
  }
}

.panel {
  background: var(--surface-elevated);
  padding: 1.35rem 1.4rem;
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 0.9rem;
}

.panel h3 {
  margin: 0 0 0.35rem;
  font-family: var(--font-serif);
  font-size: 1.0rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.panel p {
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.875rem;
  line-height: 1.65;
}

.panel ul {
  margin: 0.7rem 0 0;
  padding-left: 1.05rem;
  color: var(--ink-muted);
  font-size: 0.8125rem;
  line-height: 1.7;
}

.panel li {
  margin: 0.2rem 0;
}

/* Hero 文字密度控制 */
.hero-lead {
  max-width: 34rem;
}

.hero-bullets {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.4rem;
  margin: 0 0 1.6rem;
}

.hero-bullets li {
  margin: 0;
}

/* 小型 KPI 条（替代表格式 mini-spec） */
.kpi-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 2px;
  overflow: hidden;
  margin-top: 1.25rem;
}

@media (max-width: 900px) {
  .kpi-row {
    grid-template-columns: 1fr;
  }
}

.kpi {
  background: var(--surface-elevated);
  padding: 1.15rem 1.2rem;
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 0.85rem;
  align-items: start;
}

.kpi .k {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 0 0 0.25rem;
}

.kpi .v {
  font-size: 0.8125rem;
  color: var(--ink-muted);
  line-height: 1.65;
}

/* 现场记录：更像卡片而非段落 */
.note-grid {
  grid-template-columns: repeat(3, 1fr);
}

.note-card {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 0.9rem;
}

.note-card strong {
  margin: 0;
}

.note-card footer {
  margin-top: 0.65rem;
}

.partner-row {
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--line);
}

.partner-row p {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 0 0 1.25rem;
  text-align: center;
}

.partner-logos {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem 2.5rem;
  align-items: center;
  justify-content: center;
}

.partner-logos img {
  height: 22px;
  width: auto;
  opacity: 0.88;
  transition: opacity 0.2s var(--ease), transform 0.2s var(--ease);
}

.partner-logos img:hover {
  opacity: 1;
  transform: scale(1.06);
}

/* 卡片 */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 2px;
  overflow: hidden;
}

@media (max-width: 900px) {
  .card-grid {
    grid-template-columns: 1fr;
  }
}

.card {
  background: var(--surface-elevated);
  padding: 1.65rem 1.5rem;
  display: flex;
  flex-direction: column;
  height: 100%;
  transition: background 0.2s var(--ease);
}

.card:hover {
  background: var(--white);
}

.card h3 {
  font-family: var(--font-serif);
  margin: 0 0 0.65rem;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: 0.02em;
}

.card p {
  margin: 0 0 1.25rem;
  color: var(--ink-muted);
  font-size: 0.875rem;
  flex: 1;
  line-height: 1.65;
}

.card-meta {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 0.85rem;
}

.card-figure {
  margin: 0 0 1.1rem;
  border-radius: 2px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--surface);
}

.card-figure img {
  width: 100%;
  height: auto;
  transform: scale(1);
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

.card:hover .card-figure img {
  transform: scale(1.03);
}

.card:hover .card-figure {
  box-shadow: var(--shadow-soft);
}

/* 产品线 · 工程拆解卡 */
.product-line-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.15rem;
  align-items: stretch;
}

@media (max-width: 1024px) {
  .product-line-grid {
    grid-template-columns: 1fr;
  }
}

.sys-card {
  background: var(--surface-elevated);
  border: 1px solid var(--line);
  border-radius: 4px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 100%;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

.sys-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-soft);
}

.sys-card--opc {
  border-top: 3px solid #2f6fdf;
}

.sys-card--draw {
  border-top: 3px solid #2aa198;
}

.sys-card--vision {
  border-top: 3px solid #d33682;
}

.sys-card--arch {
  border-top: 3px solid #b58900;
}

/* 产品总览页：四条目双列排布 */
.product-line-grid--catalog {
  grid-template-columns: 1fr;
}

@media (min-width: 900px) {
  .product-line-grid--catalog {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* 产品总览：无示意图时的紧凑卡 */
.sys-card--catalog .sys-card__head {
  padding-bottom: 0.65rem;
}

.sys-card--catalog .sys-io {
  padding-top: 0.15rem;
}

.sys-card__head {
  padding: 1rem 1.1rem 0.5rem;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
}

.sys-card__title {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: 0.02em;
}

.sys-card__meta {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 0 0 0.35rem;
}

.sys-card__tag {
  margin: 0.4rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.07em;
  color: var(--accent);
  line-height: 1.35;
}

.sys-card__diagram {
  margin: 0 1rem 0.75rem;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--surface-elevated);
  box-shadow: var(--shadow-soft);
}

.sys-card__diagram svg {
  width: 100%;
  height: auto;
  display: block;
}

.sys-card__evidence {
  margin: 0 1rem 0.85rem;
  border-radius: 3px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--surface);
}

.sys-card__evidence img {
  width: 100%;
  height: auto;
  display: block;
  transform: scale(1);
  transition: transform 0.35s var(--ease);
}

.sys-card:hover .sys-card__evidence img {
  transform: scale(1.04);
}

.sys-io {
  padding: 0 1.1rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  flex: 1;
}

.sys-io__row {
  display: grid;
  grid-template-columns: 76px 1fr;
  gap: 0.5rem;
  align-items: start;
  font-size: 0.8125rem;
  line-height: 1.55;
  color: var(--ink-muted);
}

@media (max-width: 380px) {
  .sys-io__row {
    grid-template-columns: 1fr;
  }
}

.sys-io__k {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
  padding-top: 0.15rem;
}

.sys-io__row--fail .sys-io__k {
  color: #b58900;
}

.sys-io__row--accept .sys-io__k {
  color: #2aa198;
}

.sys-card__foot {
  padding: 0 1.1rem 1rem;
  margin-top: auto;
}

.sys-io-details {
  margin-top: 0.2rem;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: rgba(253, 252, 250, 0.65);
}

.sys-io-details summary {
  cursor: pointer;
  list-style: none;
  padding: 0.42rem 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
}

.sys-io-details summary::-webkit-details-marker {
  display: none;
}

.sys-io-details summary::after {
  content: "";
  width: 0.35rem;
  height: 0.35rem;
  border-right: 1px solid var(--ink-faint);
  border-bottom: 1px solid var(--ink-faint);
  transform: rotate(45deg);
  transition: transform 0.2s var(--ease);
  flex-shrink: 0;
  margin-left: 0.5rem;
  opacity: 0.75;
}

.sys-io-details[open] summary::after {
  transform: rotate(-135deg);
}

.sys-io-details__body {
  padding: 0 0.55rem 0.55rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

/* 图表容器（与 diagram--svg-card 一致的纸感圆角与轻阴影） */
.chart {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface-elevated);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.chart .meta {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 1rem;
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}

.chart .meta .t {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.chart .meta .d {
  font-size: 0.8125rem;
  color: var(--ink-muted);
}

.chart svg {
  width: 100%;
  height: auto;
  display: block;
}

.card-figure svg {
  width: 100%;
  height: auto;
  display: block;
}

.section-cta {
  text-align: center;
  margin-top: 2.5rem;
}

/* 工程注记（替代营销证言） */
.note-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 2px;
  overflow: hidden;
}

@media (max-width: 800px) {
  .note-grid {
    grid-template-columns: 1fr;
  }
}

.note-card {
  margin: 0;
  padding: 1.35rem 1.4rem;
  background: var(--surface-elevated);
  font-size: 0.875rem;
  color: var(--ink-muted);
  line-height: 1.65;
}

.note-card strong {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 0.6rem;
}

.note-card footer {
  display: block;
  margin-top: 0.85rem;
  font-size: 0.75rem;
  color: var(--ink-faint);
  font-style: normal;
}

/* 工业落地矩阵 */
.insight-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 2px;
  overflow: hidden;
}

@media (max-width: 900px) {
  .insight-grid {
    grid-template-columns: 1fr;
  }
}

.insight {
  background: var(--surface-elevated);
  padding: 1.35rem 1.4rem;
}

.insight h3 {
  margin: 0 0 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 500;
}

.insight p {
  margin: 0 0 0.85rem;
  color: var(--ink-muted);
  font-size: 0.875rem;
}

.insight ul {
  margin: 0;
  padding-left: 1.05rem;
  color: var(--ink-muted);
  font-size: 0.8125rem;
  line-height: 1.7;
}

.insight li {
  margin: 0.25rem 0;
}

.mini-spec {
  margin-top: 1.25rem;
  border: 1px solid var(--line);
  border-radius: 2px;
  overflow: hidden;
}

.mini-spec .row {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 0;
  border-bottom: 1px solid var(--line);
}

@media (max-width: 520px) {
  .mini-spec .row {
    grid-template-columns: 1fr;
  }
}

.mini-spec .row:last-child {
  border-bottom: none;
}

.mini-spec .k {
  padding: 0.75rem 1rem;
  background: var(--surface);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.mini-spec .v {
  padding: 0.75rem 1rem;
  background: var(--surface-elevated);
  font-size: 0.8125rem;
  color: var(--ink-muted);
  line-height: 1.65;
}

.section-link {
  text-align: center;
  margin-top: 1.75rem;
}

.section-link a {
  font-size: 0.8125rem;
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

/* 旧 blockquote 兼容 */
.quote-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

blockquote.case-quote {
  margin: 0;
  padding: 1.35rem 1.4rem;
  background: var(--surface-elevated);
  border: none;
  border-left: 2px solid var(--accent);
  border-radius: 0;
  box-shadow: none;
}

blockquote.case-quote p {
  margin: 0 0 0.75rem;
  font-size: 0.875rem;
  color: var(--ink-muted);
}

blockquote.case-quote footer {
  font-size: 0.75rem;
  color: var(--ink-faint);
}

/* 页脚 */
.site-footer {
  background: #070809;
  color: rgba(255, 255, 255, 0.5);
  padding: 3rem 0 1.5rem;
  font-size: 0.8125rem;
}

.site-footer a {
  color: rgba(255, 255, 255, 0.62);
}

.site-footer a:hover {
  color: rgba(255, 255, 255, 0.95);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}

@media (max-width: 900px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 520px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

.footer-brand img {
  width: 32px;
  height: 32px;
  border-radius: 3px;
  margin-bottom: 0.65rem;
  opacity: 0.9;
}

.footer-brand p {
  margin: 0;
  line-height: 1.55;
  color: rgba(255, 255, 255, 0.45);
}

.footer-brand .footer-contact {
  margin: 0.55rem 0 0;
  font-size: 0.75rem;
  line-height: 1.65;
  color: rgba(255, 255, 255, 0.38);
}

.footer-brand .footer-contact a {
  color: rgba(255, 255, 255, 0.52);
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

.footer-brand .footer-contact a:hover {
  color: rgba(255, 255, 255, 0.72);
}

.footer-col h4 {
  margin: 0 0 0.65rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.32);
}

.footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-col li {
  margin-bottom: 0.4rem;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem 1.25rem;
  justify-content: center;
  align-items: center;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  text-align: center;
  color: rgba(255, 255, 255, 0.28);
  font-size: 0.75rem;
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

.footer-bottom .footer-icp a {
  color: rgba(255, 255, 255, 0.32);
  text-decoration: none;
}

.footer-bottom .footer-icp a:hover {
  color: rgba(255, 255, 255, 0.5);
}

/* 隐私/条款/Cookie 等极简页脚 */
.footer-minimal {
  padding: 2rem 0 1.75rem;
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-minimal .footer-contact {
  margin: 0 0 0.65rem;
  font-size: 0.8125rem;
  line-height: 1.65;
  color: rgba(255, 255, 255, 0.42);
}

.footer-minimal .footer-contact a {
  color: rgba(255, 255, 255, 0.52);
  text-decoration: underline;
  text-underline-offset: 0.12em;
}

.footer-minimal .footer-icp {
  margin: 0 0 0.85rem;
  font-size: 0.75rem;
  font-family: var(--font-mono);
}

.footer-minimal .footer-icp a {
  color: rgba(255, 255, 255, 0.32);
  text-decoration: none;
}

.footer-minimal .footer-icp a:hover {
  color: rgba(255, 255, 255, 0.48);
}

.footer-minimal .footer-back {
  margin: 0;
  font-size: 0.8125rem;
}

.footer-minimal .footer-back a {
  color: rgba(255, 255, 255, 0.45);
}

/* 内页 */
.page-hero {
  background: #0a0b0d;
  color: rgba(255, 255, 255, 0.92);
  padding: 2.75rem 0 2.25rem;
  border-bottom: 1px solid var(--header-border);
}

.page-hero h1 {
  font-family: var(--font-serif);
  margin: 0 0 0.5rem;
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.3;
}

.page-hero p.sys-card__tag {
  margin: 0.15rem 0 0.85rem;
  opacity: 1;
  color: rgba(198, 208, 220, 0.95);
  max-width: 44rem;
  font-size: 0.68rem;
}

.page-hero p {
  margin: 0;
  opacity: 0.55;
  max-width: 40rem;
  font-size: 0.9375rem;
}

.page-hero p a {
  color: rgba(200, 215, 235, 0.95);
  text-decoration: underline;
  text-underline-offset: 0.18em;
}

.page-hero p a:hover {
  color: #fff;
}

.breadcrumb {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.06em;
  margin-bottom: 0.85rem;
  opacity: 0.45;
}

.breadcrumb a {
  color: inherit;
}

.breadcrumb a:hover {
  color: rgba(255, 255, 255, 0.85);
}

.content-block {
  background: var(--surface-elevated);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 1.65rem 1.5rem;
  margin-bottom: 1rem;
}

.content-block h2 {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  margin: 0 0 0.85rem;
  color: var(--ink);
}

.content-block h3 {
  font-size: 0.9375rem;
  margin: 1.1rem 0 0.4rem;
  color: var(--ink);
}

.content-block p,
.content-block li {
  color: var(--ink-muted);
  font-size: 0.875rem;
}

/* 内页段落块：标题左侧图标（与 link-list--icons 色系呼应） */
.content-block--lead-icon .content-block__lead {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 0.85rem;
}

.content-block--lead-icon .content-block__lead h2 {
  margin: 0;
  flex: 1;
  padding-top: 0.32rem;
}

.content-block__icon {
  flex-shrink: 0;
  width: 2.65rem;
  height: 2.65rem;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--chart-blue);
}

.content-block__icon svg {
  width: 20px;
  height: 20px;
  display: block;
}

.content-block__icon svg path,
.content-block__icon svg circle,
.content-block__icon svg rect,
.content-block__icon svg line,
.content-block__icon svg polyline {
  fill: none;
  stroke: currentColor;
}

.section .container > div.content-block--lead-icon:nth-of-type(1) .content-block__icon {
  color: var(--chart-blue);
  background: rgba(47, 111, 223, 0.08);
  border-color: rgba(47, 111, 223, 0.2);
}

.section .container > div.content-block--lead-icon:nth-of-type(2) .content-block__icon {
  color: var(--chart-teal);
  background: rgba(42, 161, 152, 0.09);
  border-color: rgba(42, 161, 152, 0.24);
}

.section .container > div.content-block--lead-icon:nth-of-type(3) .content-block__icon {
  color: var(--chart-amber);
  background: rgba(181, 137, 0, 0.1);
  border-color: rgba(181, 137, 0, 0.28);
}

.section .container > div.content-block--lead-icon:nth-of-type(4) .content-block__icon {
  color: var(--chart-rose);
  background: rgba(211, 54, 130, 0.09);
  border-color: rgba(211, 54, 130, 0.22);
}

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 2px;
  overflow: hidden;
}

@media (max-width: 768px) {
  .two-col {
    grid-template-columns: 1fr;
  }
}

.two-col .content-block {
  margin: 0;
  border: none;
  border-radius: 0;
}

.two-col--demo .content-block {
  padding-top: 1.4rem;
  padding-bottom: 1.4rem;
}

@media (min-width: 769px) {
  .two-col--demo {
    align-items: stretch;
  }
}

.lead-form-status--ok {
  color: #2a5c45 !important;
}

.lead-form-status--err {
  color: #9b2c2c !important;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8125rem;
}

.spec-table th,
.spec-table td {
  border: 1px solid var(--line);
  padding: 0.55rem 0.65rem;
  text-align: left;
}

.spec-table th {
  background: var(--surface);
  font-weight: 500;
  color: var(--ink);
  font-size: 0.75rem;
}

.steps {
  counter-reset: step;
  list-style: none;
  margin: 0;
  padding: 0;
}

.steps li {
  position: relative;
  padding-left: 2.25rem;
  margin-bottom: 1rem;
}

.steps li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 1.5rem;
  height: 1.5rem;
  background: var(--ink);
  color: var(--white);
  border-radius: 2px;
  font-size: 0.6875rem;
  font-family: var(--font-mono);
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: center;
}

.diagram {
  margin: 1rem 0;
  padding: 1rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 2px;
}

.diagram svg {
  width: 100%;
  height: auto;
  display: block;
}

/* 内嵌重设计 SVG（视觉/架构页）：纸感衬底 + 略大圆角 */
.diagram--svg-card {
  padding: 1.25rem 1.35rem;
  background: var(--surface-elevated);
  border-radius: 6px;
  box-shadow: var(--shadow-soft);
}

.link-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 2px;
  overflow: hidden;
}

.link-list li {
  border-bottom: 1px solid var(--line);
}

.link-list li:last-child {
  border-bottom: none;
}

.link-list a,
.link-list .link-list__block > a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--ink);
  background: var(--surface-elevated);
  transition: background 0.15s var(--ease);
}

.link-list a:hover,
.link-list .link-list__block > a:hover {
  background: var(--white);
  color: var(--ink);
}

.link-list__block {
  display: flex;
  flex-direction: column;
}

.link-list__block:hover > a,
.link-list__block:hover .link-list__sub {
  background: var(--white);
}

.link-list__block .link-list__sub {
  margin: 0;
  padding: 0 1.25rem 1rem;
  font-size: 0.8125rem;
  line-height: 1.55;
  color: var(--ink-muted);
  background: var(--surface-elevated);
  border-top: 1px solid var(--line);
}

.link-list__block .link-list__sub a {
  display: inline;
  padding: 0;
  font-weight: 500;
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: rgba(12, 13, 16, 0.18);
  background: transparent;
  justify-content: unset;
  transition: color 0.15s var(--ease), text-decoration-color 0.15s var(--ease);
}

.link-list__block .link-list__sub a:hover {
  color: var(--accent);
  background: transparent;
  text-decoration-color: rgba(181, 137, 0, 0.45);
}

.form-grid {
  display: grid;
  gap: 0.85rem;
}

/* 演示预约等：宽屏下每行两列，与右侧形态对照高度更协调 */
.form-grid--two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.form-grid--two .form-grid__full {
  grid-column: 1 / -1;
}

.form-grid--two > button.form-grid__full {
  width: 100%;
  justify-self: stretch;
}

@media (max-width: 640px) {
  .form-grid--two {
    grid-template-columns: 1fr;
  }
}

label {
  display: block;
  font-size: 0.6875rem;
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 0.3rem;
}

input,
textarea,
select {
  width: 100%;
  padding: 0.55rem 0.65rem;
  border: 1px solid var(--line-strong);
  border-radius: 2px;
  font-family: inherit;
  font-size: 0.875rem;
  background: var(--white);
}

textarea {
  min-height: 100px;
  resize: vertical;
}

.form-note {
  font-size: 0.75rem;
  color: var(--ink-faint);
  margin-top: 0.35rem;
}

.reveal {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.45s var(--ease), transform 0.45s var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

.wp-card {
  display: flex;
  gap: 1.25rem;
  padding: 1.35rem;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: var(--surface-elevated);
  margin-bottom: 0.75rem;
}

.wp-card .wp-cover {
  flex-shrink: 0;
  width: 88px;
  height: 118px;
  background: var(--ink);
  border-radius: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.45);
  font-family: var(--font-mono);
  font-size: 0.6rem;
  text-align: center;
  padding: 0.4rem;
  line-height: 1.35;
}

.subnav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 1.5rem;
}

.subnav a {
  padding: 0.35rem 0.65rem;
  border: 1px solid var(--line);
  border-radius: 2px;
  font-size: 0.75rem;
  background: var(--surface-elevated);
  color: var(--ink-muted);
}

.subnav a:hover,
.subnav a[aria-current="page"] {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--white);
}

/* 变量别名：兼容内页中仍可能出现的 token */
:root {
  --color-navy: var(--ink);
  --color-slate: #2a2d35;
  --color-muted: var(--ink-muted);
  --color-text: var(--ink);
  --color-text-soft: var(--ink-faint);
  --color-gold: var(--accent);
  --color-bg: var(--surface);
  --color-white: #ffffff;
  --color-border: var(--line);
}

/* 软件著作权登记卡片（technology-patents） */
.soft-copyright-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(17rem, 1fr));
  gap: 1.35rem;
  margin: 1.25rem 0 0;
  padding: 0;
  list-style: none;
}

.soft-copyright-card {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface-elevated);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

a.soft-copyright-card__thumb {
  display: block;
  line-height: 0;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}

a.soft-copyright-card__thumb:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

a.soft-copyright-card__thumb img {
  width: 100%;
  height: auto;
  display: block;
}

.soft-copyright-card__body {
  padding: 1rem 1.1rem 1.1rem;
}

.soft-copyright-card__body h3 {
  margin: 0 0 0.65rem;
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.35;
}

.soft-copyright-dl {
  margin: 0;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.25rem 0.75rem;
  font-size: 0.8125rem;
}

.soft-copyright-dl dt {
  margin: 0;
  color: var(--ink-faint);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.soft-copyright-dl dd {
  margin: 0;
  color: var(--ink-muted);
}

/* 首页 Hero：龙虾 + 文案 → OpenClaw 指南 */
.hero-lobster {
  position: absolute;
  right: 0.25rem;
  bottom: 0.45rem;
  z-index: 4;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  max-width: min(17.5rem, calc(100% - 1rem));
  padding: 0.35rem 0.65rem 0.35rem 0.4rem;
  border-radius: 999px;
  background: rgba(225, 29, 72, 0.2);
  border: 1px solid rgba(254, 205, 211, 0.5);
  box-shadow: 0 6px 22px rgba(0, 0, 0, 0.35);
  text-decoration: none;
  animation: hero-lobster-blink 2.5s ease-in-out infinite;
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease), box-shadow 0.2s var(--ease), background 0.2s var(--ease);
}

.hero-lobster:hover {
  transform: scale(1.02);
  border-color: rgba(254, 205, 211, 0.85);
  background: rgba(225, 29, 72, 0.28);
  animation: none;
  opacity: 1;
  box-shadow: 0 8px 28px rgba(225, 29, 72, 0.28);
}

@keyframes hero-lobster-blink {
  0%,
  38%,
  100% {
    opacity: 1;
    filter: brightness(1);
  }

  45% {
    opacity: 0.55;
    filter: brightness(1.15);
  }

  52% {
    opacity: 0.35;
    filter: brightness(0.88);
  }

  58% {
    opacity: 0.85;
    filter: brightness(1.05);
  }
}

.hero-lobster__icon {
  flex-shrink: 0;
  width: 2.5rem;
  height: 2.5rem;
  display: block;
  object-fit: contain;
}

.hero-lobster__label {
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  line-height: 1.35;
  color: rgba(255, 245, 247, 0.95);
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.45);
  text-align: left;
  hyphens: auto;
}

@media (max-width: 960px) {
  .hero-lobster {
    right: 0.4rem;
    bottom: 0.3rem;
    max-width: calc(100% - 0.85rem);
    gap: 0.45rem;
    padding: 0.3rem 0.55rem 0.3rem 0.35rem;
  }

  .hero-lobster__icon {
    width: 2.15rem;
    height: 2.15rem;
  }

  .hero-lobster__label {
    font-size: 0.625rem;
  }
}

@media (max-width: 420px) {
  .hero-lobster {
    border-radius: 10px;
    align-items: flex-start;
    padding: 0.35rem 0.5rem;
  }

  .hero-lobster__label {
    font-size: 0.58rem;
    line-height: 1.4;
  }
}

/* OpenClaw 指南页（与全站 header / section--paper 一致） */
.openclaw-guide-page-hero {
  padding-bottom: 2.5rem;
}

.openclaw-guide-page-hero .openclaw-guide__intro {
  display: grid;
  grid-template-columns: 1fr minmax(14rem, 1.05fr);
  gap: 2rem;
  align-items: start;
}

@media (max-width: 900px) {
  .openclaw-guide-page-hero .openclaw-guide__intro {
    grid-template-columns: 1fr;
  }
}

.openclaw-guide-page-hero .openclaw-guide__intro-text h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.45rem, 3.5vw, 2rem);
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.28;
  margin: 0 0 0.75rem;
  color: rgba(255, 255, 255, 0.96);
}

.openclaw-guide-page-hero .openclaw-guide__subtitle {
  margin: 0 0 0.85rem;
  font-size: 1rem;
  line-height: 1.55;
  color: rgba(255, 255, 255, 0.72);
  opacity: 1;
  max-width: 40rem;
}

.openclaw-guide-page-hero .openclaw-guide__deck {
  margin: 0 0 1.35rem;
  font-size: 0.875rem;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.52);
  opacity: 1;
  max-width: 42rem;
}

.openclaw-guide__intro-visual img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 4px;
}

.openclaw-guide__max {
  max-width: 52rem;
}

.openclaw-guide__max .guide-toc {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 1.25rem 1.4rem;
  margin: 0 0 2rem;
  border-left: 3px solid var(--chart-blue);
}

.openclaw-guide__max .guide-toc h3 {
  margin: 0 0 0.65rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--ink);
  font-family: var(--font-serif);
}

.openclaw-guide__max .guide-toc ul {
  margin: 0;
  padding-left: 1.2rem;
  font-size: 0.875rem;
  line-height: 1.75;
}

.openclaw-guide__max .guide-toc a {
  color: var(--accent);
  text-decoration: none;
}

.openclaw-guide__max .guide-toc a:hover {
  text-decoration: underline;
  text-underline-offset: 2px;
}

.openclaw-guide__max .guide-section {
  scroll-margin-top: calc(var(--header-h) + 0.75rem);
  margin-bottom: 2.25rem;
}

.openclaw-guide__max .guide-section h2 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--ink);
  margin: 0 0 0.85rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--line);
}

.openclaw-guide__max .guide-section h3 {
  font-size: 0.98rem;
  margin: 1.15rem 0 0.45rem;
  color: var(--ink);
}

.openclaw-guide__max .guide-section p,
.openclaw-guide__max .guide-section li {
  color: var(--ink-muted);
  font-size: 0.875rem;
  line-height: 1.8;
}

.openclaw-guide__max .guide-section p {
  margin: 0.55rem 0;
}

.openclaw-guide__max pre,
.openclaw-guide__max .code-block {
  background: #12151c;
  color: rgba(230, 235, 245, 0.92);
  padding: 0.9rem 1.05rem;
  border-radius: 6px;
  overflow-x: auto;
  font-size: 0.8125rem;
  line-height: 1.55;
  border: 1px solid rgba(255, 255, 255, 0.08);
  font-family: var(--font-mono);
}

.openclaw-guide__max .guide-table {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
  margin: 1rem 0 1.35rem;
  font-size: 0.8125rem;
  background: var(--surface-elevated);
}

.openclaw-guide__max .guide-table th,
.openclaw-guide__max .guide-table td {
  padding: 0.75rem 0.85rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  text-align: left;
}

.openclaw-guide__max .guide-table th {
  background: var(--surface);
  color: var(--ink);
  font-weight: 600;
}

.openclaw-guide__max .guide-table tr:last-child td {
  border-bottom: none;
}

.openclaw-guide__max .guide-table .code-block {
  margin: 0.35rem 0 0;
}

.openclaw-guide__max .guide-callout {
  border-radius: 6px;
  padding: 0.9rem 1.1rem;
  border: 1px solid rgba(47, 111, 223, 0.22);
  background: rgba(47, 111, 223, 0.06);
  margin: 1rem 0;
}

.openclaw-guide__max .guide-callout strong {
  color: var(--chart-blue);
}

.openclaw-guide__max .guide-callout.warn {
  border-color: rgba(181, 137, 0, 0.35);
  background: rgba(181, 137, 0, 0.08);
}

.openclaw-guide__max .guide-callout.warn strong {
  color: #8a6910;
}

.openclaw-guide__max .guide-callout.info {
  border-color: rgba(42, 161, 152, 0.28);
  background: rgba(42, 161, 152, 0.07);
}

.openclaw-guide__max .guide-callout.info strong {
  color: var(--chart-teal);
}

.openclaw-guide__max .guide-figure {
  margin: 1.15rem 0 1.35rem;
  padding: 0.9rem;
  background: var(--surface-elevated);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.openclaw-guide__max .guide-figure img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 4px;
}

.openclaw-guide__max .guide-figure figcaption {
  margin-top: 0.65rem;
  color: var(--ink-muted);
  font-size: 0.8125rem;
  line-height: 1.55;
}

.openclaw-guide__max .guide-steps {
  margin: 0.5rem 0 1.1rem;
  padding-left: 1.2rem;
}

.openclaw-guide__max .guide-steps li {
  margin: 0.35rem 0;
}

.openclaw-guide__max .consult-box {
  background: linear-gradient(135deg, rgba(47, 111, 223, 0.07) 0%, rgba(42, 161, 152, 0.05) 100%);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 1.5rem 1.4rem;
  margin: 1.5rem 0;
}

.openclaw-guide__max .consult-box h2,
.openclaw-guide__max .consult-box h3 {
  margin-top: 0;
  color: var(--ink);
}

.openclaw-guide__form-title {
  margin: 0 0 0.75rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--chart-blue);
  font-family: var(--font-serif);
}

.openclaw-guide__contact-btn {
  margin-top: 0.5rem;
}

.openclaw-guide__max .inline-form {
  background: var(--surface-elevated);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 1.15rem 1.25rem;
  margin-top: 1rem;
}

.openclaw-guide__max .inline-form .form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.65rem;
}

@media (max-width: 640px) {
  .openclaw-guide__max .inline-form .form-row {
    grid-template-columns: 1fr;
  }
}

.openclaw-guide__max .inline-form .form-group {
  margin-bottom: 0.65rem;
}

.openclaw-guide__max .inline-form label {
  display: block;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 0.35rem;
  font-size: 0.8125rem;
}

.openclaw-guide__max .inline-form input,
.openclaw-guide__max .inline-form textarea {
  width: 100%;
  padding: 0.55rem 0.65rem;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  font-size: 0.875rem;
  background: var(--surface);
  color: var(--ink);
}

.openclaw-guide__max .inline-form input:focus,
.openclaw-guide__max .inline-form textarea:focus {
  outline: none;
  border-color: var(--chart-blue);
  box-shadow: 0 0 0 3px rgba(47, 111, 223, 0.12);
}

.openclaw-guide__max .inline-form textarea {
  min-height: 7rem;
  resize: vertical;
}

.openclaw-guide__max .inline-form .form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  margin-top: 0.35rem;
}

.openclaw-guide__max .inline-form .form-tip {
  color: var(--ink-muted);
  font-size: 0.8125rem;
}

.openclaw-guide__max dl {
  font-size: 0.875rem;
  color: var(--ink-muted);
}

.openclaw-guide__max dl dt {
  font-weight: 600;
  color: var(--ink);
  margin-top: 0.75rem;
}

.openclaw-guide__max dl dd {
  margin: 0.25rem 0 0 0;
  line-height: 1.65;
}

.openclaw-guide__cta-band {
  text-align: center;
}

.openclaw-guide__cta-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  margin: 0 0 0.5rem;
}

.openclaw-guide__cta-desc {
  margin: 0 0 1rem;
  color: var(--ink-muted);
  font-size: 0.875rem;
  max-width: 36rem;
  margin-left: auto;
  margin-right: auto;
}

.openclaw-guide__cta-actions {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  justify-content: center;
}