/* ============================================================
   BOYUBO v2 · LIGHT EDITION (浅色版)
   Warm-white base · deep teal accent · 深色岛屿保留 console 演示
   ============================================================ */

:root {
  /* —— 主基底（浅色版反转）—— */
  --c-bg:            #FAFAF7;   /* 暖米白主背景 */
  --c-bg-elevated:   #F2F1ED;   /* 略灰白（section soft）*/
  --c-bg-card:       #FFFFFF;   /* 纯白卡片 */
  --c-bg-soft:       #ECEAE3;   /* 弱区 */
  --c-bg-paper:      #0A0B10;   /* 反向：深色岛屿底（paper section 反转含义）*/

  /* —— 文字 —— */
  --c-text:          #0A0B10;   /* 主文字（深）*/
  --c-text-mid:      #4A5061;   /* 次文字（深灰）*/
  --c-text-dim:      #6B7187;   /* 弱文字（中灰）*/
  --c-text-faint:    #9CA0B0;   /* 最浅文字（仅装饰）*/
  --c-text-paper:    #F5F6FA;   /* 反向：深色岛屿上的白字 */
  --c-text-paper-mid:#A8AEC2;   /* 反向：深色岛屿上的浅灰字 */

  /* —— 描边 —— */
  --c-border:        rgba(10,11,16,0.08);
  --c-border-mid:    rgba(10,11,16,0.14);
  --c-border-strong: rgba(10,11,16,0.22);
  --c-border-paper:  rgba(255,255,255,0.10);   /* 反向：深色岛屿上的白描边 */

  /* —— Accent（深青 teal，在浅底有对比度）—— */
  --c-accent:        #0795A8;
  --c-accent-2:      #066D7D;
  --c-accent-soft:   rgba(7,149,168,0.10);
  --c-accent-glow:   rgba(7,149,168,0.20);

  --c-success:       #0E9F6E;   /* 略调深，浅底可见 */
  --c-warning:       #D97706;   /* 琥珀色 */
  --c-danger:        #DC2626;
  --c-live:          #E11D48;

  --f-sans:  'Inter', -apple-system, 'Segoe UI', 'Noto Sans SC', 'PingFang SC', sans-serif;
  --f-mono:  'JetBrains Mono', 'SFMono-Regular', Menlo, monospace;
  --f-serif: 'Source Serif Pro', 'Noto Serif SC', Georgia, serif;

  --s-1:  4px;  --s-2:  8px;  --s-3: 12px; --s-4: 16px;
  --s-5: 24px;  --s-6: 32px;  --s-7: 48px; --s-8: 64px;
  --s-9: 96px;  --s-10: 128px;

  --max-w:       1280px;
  --nav-h:       60px;
  --radius-sm:   4px;
  --radius-md:   8px;
  --radius-lg:   14px;
  --radius-pill: 999px;

  --ease-out:    cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-lg:   0 18px 40px -12px rgba(10,11,16,0.16);
  --shadow-glow: 0 0 24px var(--c-accent-glow);
}

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; overflow-x: hidden; max-width: 100vw; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--f-sans);
  font-size: 15px;
  line-height: 1.6;
  color: var(--c-text);
  background: var(--c-bg);
  overflow-x: hidden;
  font-feature-settings: 'ss01', 'cv11';
}
img, svg { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; padding: 0; margin: 0; }
button { font: inherit; border: 0; background: transparent; color: inherit; cursor: pointer; }

h1, h2, h3, h4 {
  margin: 0;
  font-weight: 700;
  color: var(--c-text);
  letter-spacing: -0.02em;
  line-height: 1.12;
}
h1 { font-size: clamp(38px, 4.6vw, 60px); font-weight: 700; letter-spacing: -0.03em; }
h2 { font-size: clamp(28px, 3vw, 42px); letter-spacing: -0.025em; }
h3 { font-size: 20px; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-text-dim);
  font-weight: 500;
}
.eyebrow .dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--c-accent);
  box-shadow: 0 0 8px var(--c-accent-glow);
}
.eyebrow .dot.live { background: var(--c-live); box-shadow: 0 0 8px rgba(255,59,87,0.5); animation: pulse 1.6s ease-in-out infinite; }
.eyebrow .dot.ok   { background: var(--c-success); box-shadow: 0 0 8px rgba(52,211,153,0.4); }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.35; } }

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--s-5);
}

/* ===== Navigation ===== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  background: rgba(250, 250, 247, 0.82);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--c-border);
  z-index: 100;
}
.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  height: 100%;
  padding: 0 var(--s-5);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-5);
}
.logo {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  color: var(--c-text);
  font-family: var(--f-sans);
  line-height: 1;
}
.logo .word {
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.02em;
}
.logo .cn {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--c-text-mid);
}
.nav-menu {
  display: flex;
  gap: 2px;
  font-size: 14px;
  font-weight: 500;
}
.nav-menu > li > a {
  display: inline-block;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  color: var(--c-text-mid);
  transition: color 0.2s, background 0.2s;
}
.nav-menu > li > a:hover {
  color: var(--c-text);
  background: rgba(10,11,16,0.04);
}
.nav-cta {
  display: flex;
  align-items: center;
  gap: 10px;
}
@media (max-width: 880px) { .nav-menu { display: none; } }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  border: 1px solid transparent;
  white-space: nowrap;
  transition: all 0.2s var(--ease-out);
}
.btn .arrow { transition: transform 0.2s var(--ease-out); }
.btn:hover .arrow { transform: translateX(3px); }

.btn-primary {
  background: var(--c-accent);
  color: #FFFFFF;
}
.btn-primary:hover {
  background: var(--c-accent-2);
  box-shadow: 0 0 0 1px var(--c-accent), 0 8px 24px var(--c-accent-glow);
}
.btn-ghost {
  background: transparent;
  color: var(--c-text);
  border-color: var(--c-border-mid);
}
.btn-ghost:hover {
  border-color: var(--c-border-strong);
  background: rgba(10,11,16,0.04);
}
.btn-link {
  color: var(--c-text-mid);
  font-size: 14px;
  font-weight: 500;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
}
.btn-link:hover { color: var(--c-text); border-bottom-color: var(--c-border-mid); }

/* ===== Mono code ===== */
code, .mono { font-family: var(--f-mono); }

/* ===== Hero ===== */
.hero {
  position: relative;
  padding: calc(var(--nav-h) + var(--s-9)) 0 var(--s-9);
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(800px 600px at 90% 10%, rgba(7,149,168,0.10), transparent 60%),
    radial-gradient(600px 400px at 10% 90%, rgba(7,149,168,0.05), transparent 60%);
  pointer-events: none;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  gap: var(--s-8);
  align-items: center;
  position: relative;
  z-index: 1;
}
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; gap: var(--s-7); }
}

.hero-left h1 { margin-top: var(--s-4); }
.hero-left h1 .accent { color: var(--c-accent); }
.hero-lede {
  margin-top: var(--s-5);
  font-size: 17px;
  line-height: 1.65;
  color: var(--c-text-mid);
  max-width: 520px;
}
.hero-cta-row {
  margin-top: var(--s-6);
  display: flex;
  align-items: center;
  gap: var(--s-4);
  flex-wrap: wrap;
}
.hero-meta {
  margin-top: var(--s-7);
  padding-top: var(--s-5);
  border-top: 1px solid var(--c-border);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--s-4);
  max-width: 540px;
}
.hero-meta-item .k {
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-text-dim);
}
.hero-meta-item .v {
  font-size: 14px;
  color: var(--c-text);
  margin-top: 4px;
  font-weight: 500;
}
.hero-meta-item .v .sub {
  color: var(--c-text-dim);
  font-weight: 400;
  font-size: 12px;
}

/* ===== Hero right · simulated console ===== */
.console {
  position: relative;
  background: var(--c-bg-elevated);
  border: 1px solid var(--c-border-mid);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.console::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  pointer-events: none;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.06);
}

.console-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  border-bottom: 1px solid var(--c-border);
  background: rgba(255,255,255,0.02);
}
.console-tabs {
  display: flex;
  gap: 4px;
  font-family: var(--f-mono);
  font-size: 11px;
}
.console-tab {
  padding: 6px 10px;
  border-radius: 4px;
  color: var(--c-text-dim);
}
.console-tab.active { color: var(--c-text); background: rgba(255,255,255,0.06); }
.console-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--f-mono);
  font-size: 11px;
  color: var(--c-text-mid);
}
.console-status .live-dot {
  width: 6px; height: 6px;
  background: var(--c-live);
  border-radius: 50%;
  animation: pulse 1.6s ease-in-out infinite;
}

/* Video frame */
.video-frame {
  position: relative;
  aspect-ratio: 16 / 9;
  background-color: #0a1929;
  background-size: cover;
  background-position: center;
  overflow: hidden;
}
.video-frame::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(10,11,16,0.20) 0%, rgba(10,11,16,0.55) 100%),
    radial-gradient(ellipse at 75% 65%, rgba(0,80,140,0.18), transparent 60%);
  pointer-events: none;
}
.video-frame::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(90deg, rgba(255,255,255,0.03) 0 1px, transparent 1px 80px),
    repeating-linear-gradient(0deg,  rgba(255,255,255,0.025) 0 1px, transparent 1px 80px);
  pointer-events: none;
}

/* Detection boxes */
.det-box {
  position: absolute;
  border: 1.5px solid var(--c-accent);
  border-radius: 2px;
  box-shadow: 0 0 0 1px rgba(0,224,255,0.10), 0 0 12px rgba(0,224,255,0.18);
  animation: scan 4s ease-in-out infinite;
}
.det-box.b1 { left: 8%;  top: 22%; width: 28%; height: 30%; animation-delay: 0s; }
.det-box.b2 { left: 44%; top: 40%; width: 22%; height: 38%; animation-delay: 0.6s; }
.det-box.b3 { left: 72%; top: 18%; width: 20%; height: 26%; animation-delay: 1.2s; }
.det-box.b4 { left: 62%; top: 60%; width: 16%; height: 22%; animation-delay: 1.8s; }
@keyframes scan {
  0%, 100% { opacity: 0.6; }
  50%      { opacity: 1;   }
}
.det-label {
  position: absolute;
  top: -22px;
  left: -1px;
  font-family: var(--f-mono);
  font-size: 10px;
  padding: 2px 6px;
  background: var(--c-accent);
  color: #0A0B10;
  border-radius: 2px 2px 2px 0;
  white-space: nowrap;
  font-weight: 600;
  letter-spacing: 0.02em;
}
.det-label.warn { background: var(--c-warning); }
.det-label .conf { opacity: 0.7; margin-left: 4px; font-weight: 500; }

/* Timeline overlay at bottom of video */
.timeline {
  position: absolute;
  left: 14px; right: 14px; bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--f-mono);
  font-size: 10px;
  color: var(--c-text-mid);
}
.timeline-bar {
  flex: 1;
  height: 3px;
  background: rgba(255,255,255,0.10);
  border-radius: 999px;
  overflow: hidden;
  position: relative;
}
.timeline-bar::after {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 42%;
  background: linear-gradient(90deg, transparent, var(--c-accent));
  border-radius: 999px;
  animation: progress 9s ease-in-out infinite;
}
@keyframes progress {
  0%   { width: 8%;  }
  60%  { width: 72%; }
  100% { width: 8%;  }
}
.timeline-mark {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.timeline-mark .pip {
  width: 4px; height: 4px;
  background: var(--c-accent);
  border-radius: 50%;
}

/* Bottom panel: JSON + metrics */
.console-panel {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  border-top: 1px solid var(--c-border);
}
@media (max-width: 560px) { .console-panel { grid-template-columns: 1fr; } }

.json-block {
  padding: var(--s-4) var(--s-5);
  font-family: var(--f-mono);
  font-size: 11.5px;
  line-height: 1.65;
  color: var(--c-text-mid);
  border-right: 1px solid var(--c-border);
  overflow: hidden;
}
@media (max-width: 560px) { .json-block { border-right: 0; border-bottom: 1px solid var(--c-border); } }
.json-block .k { color: var(--c-text-dim); }
.json-block .s { color: #B6E3FF; }
.json-block .n { color: var(--c-accent); }
.json-block .c { color: var(--c-text-faint); }
.json-block .punc { color: var(--c-text-faint); }

.metrics {
  padding: var(--s-4) var(--s-5);
  display: grid;
  gap: var(--s-3);
  align-content: start;
}
.metric {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--s-2);
  font-size: 12px;
}
.metric .label {
  color: var(--c-text-dim);
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.metric .value {
  font-family: var(--f-mono);
  color: var(--c-text);
  font-weight: 600;
  font-size: 13px;
}
.metric .value .unit { color: var(--c-text-dim); font-weight: 400; margin-left: 2px; }
.metric .value .ok { color: var(--c-success); }

/* ===== Section: Roadmap (A-style learning section) ===== */
.section-roadmap {
  background: var(--c-bg-paper);
  color: var(--c-text-paper);
  padding: var(--s-10) 0;
  border-top: 1px solid var(--c-border);
}
.section-roadmap .eyebrow { color: var(--c-text-paper-mid); }
.section-roadmap .eyebrow .dot { background: var(--c-text-paper); box-shadow: none; }
.section-roadmap h2 { color: var(--c-text-paper); max-width: 880px; }
.section-roadmap .lede {
  margin-top: var(--s-5);
  font-size: 17px;
  line-height: 1.65;
  color: var(--c-text-paper-mid);
  max-width: 720px;
}
.section-head {
  margin-bottom: var(--s-9);
}

.stages {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--c-border-paper);
}
@media (max-width: 880px) { .stages { grid-template-columns: 1fr; } }

.stage {
  padding: var(--s-7) var(--s-6) var(--s-7) 0;
  border-right: 1px solid var(--c-border-paper);
  position: relative;
}
.stages > .stage:last-child { border-right: 0; padding-right: 0; }
.stages > .stage:not(:first-child) { padding-left: var(--s-6); }
@media (max-width: 880px) {
  .stage { border-right: 0; border-bottom: 1px solid var(--c-border-paper); padding: var(--s-6) 0 !important; }
  .stages > .stage:last-child { border-bottom: 0; }
}

.stage-num {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--c-text-paper-mid);
}
.stage-title {
  margin-top: var(--s-3);
  font-family: var(--f-serif);
  font-size: 28px;
  line-height: 1.15;
  font-weight: 600;
  color: var(--c-text-paper);
  letter-spacing: -0.01em;
}
.stage-subtitle {
  margin-top: var(--s-2);
  font-size: 13px;
  color: var(--c-text-paper-mid);
  font-style: italic;
}
.stage-body {
  margin-top: var(--s-5);
  font-size: 15px;
  line-height: 1.65;
  color: var(--c-text-paper);
  max-width: 360px;
}
.stage-list {
  margin-top: var(--s-5);
  display: grid;
  gap: 0;
  font-size: 13px;
  color: var(--c-text-paper-mid);
}
.stage-list li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px dashed var(--c-border-paper);
}
.stage-list li:last-child { border-bottom: 0; }
.stage-list .idx {
  font-family: var(--f-mono);
  font-size: 10px;
  color: var(--c-text-paper-mid);
  opacity: 0.6;
  min-width: 22px;
}
.stage-foot {
  margin-top: var(--s-6);
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 500;
  color: var(--c-text-paper);
  border-bottom: 1px solid var(--c-text-paper);
  padding-bottom: 4px;
  width: max-content;
  transition: gap 0.2s var(--ease-out);
}
.stage-foot:hover { gap: 12px; }
.stage.live .stage-num::after {
  content: '· LIVE';
  margin-left: 10px;
  color: var(--c-success);
  font-weight: 600;
}
.stage.preview .stage-num::after {
  content: '· PREVIEW';
  margin-left: 10px;
  color: var(--c-warning);
  font-weight: 600;
}
.stage.thesis .stage-num::after {
  content: '· THESIS';
  margin-left: 10px;
  color: var(--c-text-paper-mid);
  font-weight: 600;
}

/* ===== Generic dark sections ===== */
.section {
  padding: var(--s-10) 0;
  border-top: 1px solid var(--c-border);
  position: relative;
}
.section .section-head {
  margin-bottom: var(--s-8);
  max-width: 880px;
}
.section .section-head h2 { margin-top: var(--s-4); }
.section .section-head .lede {
  margin-top: var(--s-5);
  font-size: 17px;
  line-height: 1.65;
  color: var(--c-text-mid);
  max-width: 680px;
}

/* ===== Capability matrix ===== */
.cap-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--c-border);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}
@media (max-width: 880px) { .cap-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .cap-grid { grid-template-columns: 1fr; } }
.cap-tile {
  background: var(--c-bg);
  padding: var(--s-6);
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
  transition: background 0.2s var(--ease-out);
  position: relative;
}
.cap-tile:hover { background: var(--c-bg-elevated); }
.cap-tile:hover .cap-cta { color: var(--c-accent); }
.cap-tile:hover .cap-cta .arrow { transform: translateX(4px); }
.cap-path {
  font-family: var(--f-mono);
  font-size: 11px;
  color: var(--c-text-dim);
  letter-spacing: 0.04em;
}
.cap-path .badge {
  display: inline-block;
  margin-left: 8px;
  padding: 1px 6px;
  border-radius: 3px;
  font-size: 9px;
  letter-spacing: 0.12em;
  border: 1px solid var(--c-border-mid);
  color: var(--c-text-mid);
  vertical-align: 1px;
}
.cap-path .badge.live { color: var(--c-success); border-color: rgba(52,211,153,0.3); }
.cap-path .badge.beta { color: var(--c-warning); border-color: rgba(251,191,36,0.3); }
.cap-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--c-text);
  margin-top: var(--s-2);
}
.cap-desc {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--c-text-mid);
  flex: 1;
}
.cap-cta {
  margin-top: var(--s-4);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--c-text);
  font-weight: 500;
  transition: color 0.2s;
}
.cap-cta .arrow { transition: transform 0.2s var(--ease-out); }

/* ===== Products (SaaS) ===== */
.prod-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--s-5);
}
.prod-grid.two-cols {
  grid-template-columns: repeat(2, 1fr);
  max-width: 880px;
  margin: 0 auto;
}
@media (max-width: 980px) { .prod-grid, .prod-grid.two-cols { grid-template-columns: 1fr; } }
.prod-card {
  background: var(--c-bg-card);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color 0.2s, transform 0.2s var(--ease-out);
}
.prod-card:hover { border-color: var(--c-border-strong); transform: translateY(-2px); }
.prod-mock {
  position: relative;
  height: 160px;
  background: var(--c-bg-paper);   /* 深色岛屿：模拟产品截图 */
  border-bottom: 1px solid var(--c-border);
  overflow: hidden;
  padding: var(--s-4);
}
.prod-mock-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--f-mono);
  font-size: 10px;
  color: var(--c-text-paper-mid);
}
.prod-mock-head .live-dot {
  width: 5px; height: 5px;
  background: var(--c-live);
  border-radius: 50%;
  display: inline-block;
  margin-right: 4px;
  animation: pulse 1.6s ease-in-out infinite;
}
/* product-specific mock visuals */
.prod-mock .timeline-mini {
  margin-top: var(--s-3);
  height: 4px;
  background: rgba(255,255,255,0.06);
  border-radius: 2px;
  position: relative;
  overflow: hidden;
}
.prod-mock .timeline-mini::after {
  content: '';
  position: absolute;
  inset: 0 60% 0 0;
  background: linear-gradient(90deg, transparent, var(--c-accent));
  border-radius: 2px;
}
.prod-mock .timeline-pips {
  margin-top: 6px;
  display: flex;
  gap: 4px;
}
.prod-mock .timeline-pips span {
  height: 8px;
  background: rgba(255,255,255,0.04);
  border-radius: 1px;
  flex: 1;
}
.prod-mock .timeline-pips span.hl { background: var(--c-accent-soft); border: 1px solid rgba(0,224,255,0.4); }
.prod-mock .frames {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 4px;
  margin-top: var(--s-3);
}
.prod-mock .frames span {
  aspect-ratio: 1;
  background: linear-gradient(135deg, rgba(0,224,255,0.08), rgba(0,184,212,0.02));
  border: 1px solid var(--c-border);
  border-radius: 2px;
  position: relative;
}
.prod-mock .frames span.tag::after {
  content: '✓';
  position: absolute;
  bottom: 2px; right: 3px;
  font-size: 9px;
  color: var(--c-accent);
  font-family: var(--f-mono);
}
.prod-mock .roster {
  margin-top: var(--s-3);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 4px;
}
.prod-mock .roster span {
  height: 18px;
  background: rgba(255,255,255,0.04);
  border-radius: 2px;
  font-family: var(--f-mono);
  font-size: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-text-dim);
}
.prod-mock .roster span.on { background: var(--c-accent-soft); color: var(--c-accent); }
.prod-body {
  padding: var(--s-5);
  display: flex;
  flex-direction: column;
  flex: 1;
}
.prod-tag {
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--c-text-dim);
}
.prod-name {
  margin-top: var(--s-2);
  font-size: 18px;
  font-weight: 700;
}
.prod-desc {
  margin-top: var(--s-3);
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--c-text-mid);
  flex: 1;
}
.prod-feats {
  margin-top: var(--s-4);
  font-family: var(--f-mono);
  font-size: 11px;
  color: var(--c-text-dim);
}
.prod-cta {
  margin-top: var(--s-5);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--c-accent);
}
.prod-cta .arrow { transition: transform 0.2s var(--ease-out); }
.prod-card:hover .prod-cta .arrow { transform: translateX(3px); }

/* ===== Industries ===== */
.ind-feature {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--s-5);
  margin-bottom: var(--s-6);
}
@media (max-width: 980px) { .ind-feature { grid-template-columns: 1fr; } }
.ind-card {
  background: var(--c-bg-card);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color 0.2s, transform 0.2s var(--ease-out);
}
.ind-card:hover { border-color: var(--c-border-strong); transform: translateY(-2px); }
.ind-cover {
  height: 160px;
  position: relative;
  overflow: hidden;
  background-color: var(--c-bg-elevated);
  background-size: cover;
  background-position: center;
  border-bottom: 1px solid var(--c-border);
}
.ind-cover::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(10,11,16,0.20) 0%, rgba(10,11,16,0.65) 100%);
  pointer-events: none;
}
.ind-cover .ind-overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}
.ind-cover .cat-tag {
  position: absolute;
  top: 12px; left: 12px;
  z-index: 2;
  font-family: var(--f-mono);
  font-size: 10px;
  padding: 3px 8px;
  background: rgba(10,11,16,0.65);
  border: 1px solid var(--c-border-mid);
  border-radius: 3px;
  color: var(--c-text);
  letter-spacing: 0.06em;
  backdrop-filter: blur(6px);
}
.ind-cover .ind-conf {
  position: absolute;
  bottom: 12px; right: 12px;
  z-index: 2;
  font-family: var(--f-mono);
  font-size: 10px;
  padding: 3px 8px;
  background: rgba(0,224,255,0.12);
  border: 1px solid rgba(0,224,255,0.4);
  border-radius: 3px;
  color: var(--c-accent);
  letter-spacing: 0.04em;
  backdrop-filter: blur(6px);
}
.ind-body { padding: var(--s-4) var(--s-5) var(--s-5); }
.ind-title { font-size: 16px; font-weight: 700; }
.ind-pain {
  margin-top: var(--s-2);
  font-size: 13px;
  line-height: 1.55;
  color: var(--c-text-mid);
}
.ind-more {
  margin-top: var(--s-4);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--c-accent);
  font-family: var(--f-mono);
  letter-spacing: 0.04em;
}

.ind-list {
  border-top: 1px solid var(--c-border);
}
.ind-list-item {
  display: grid;
  grid-template-columns: 110px 1fr 1fr 24px;
  gap: var(--s-4);
  padding: var(--s-4) 0;
  border-bottom: 1px solid var(--c-border);
  font-size: 13.5px;
  align-items: center;
  transition: background 0.15s;
  color: var(--c-text);
  padding-left: var(--s-3);
  padding-right: var(--s-3);
  margin-left: calc(-1 * var(--s-3));
  margin-right: calc(-1 * var(--s-3));
  border-radius: 2px;
}
.ind-list-item:hover { background: rgba(10,11,16,0.03); }
.ind-list-item .cat {
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--c-text-dim);
  text-transform: uppercase;
}
.ind-list-item .ttl { font-weight: 500; }
.ind-list-item .desc { color: var(--c-text-mid); font-size: 12.5px; }
.ind-list-item .arr { color: var(--c-text-dim); text-align: right; transition: color 0.2s, transform 0.2s var(--ease-out); }
.ind-list-item:hover .arr { color: var(--c-accent); transform: translateX(3px); }
@media (max-width: 760px) {
  .ind-list-item { grid-template-columns: 1fr; gap: var(--s-1); padding: var(--s-3) var(--s-2); }
  .ind-list-item .arr { display: none; }
}
.ind-all-link {
  margin-top: var(--s-5);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 500;
  color: var(--c-text);
  border-bottom: 1px solid var(--c-border-mid);
  padding-bottom: 3px;
}
.ind-all-link:hover { border-bottom-color: var(--c-accent); color: var(--c-accent); }

/* ===== API Tiers ===== */
.tier-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--s-5);
}
@media (max-width: 980px) { .tier-grid { grid-template-columns: 1fr; } }
.tier {
  background: var(--c-bg-card);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: var(--s-6);
  display: flex;
  flex-direction: column;
  position: relative;
}
.tier.featured {
  border-color: rgba(7,149,168,0.40);
  box-shadow: 0 0 0 1px rgba(7,149,168,0.10), 0 24px 48px -24px rgba(7,149,168,0.22);
}
.tier.featured::before {
  content: 'RECOMMENDED';
  position: absolute;
  top: -10px; left: var(--s-6);
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--c-accent);
  background: var(--c-bg);
  padding: 2px 8px;
  border: 1px solid rgba(7,149,168,0.35);
  border-radius: 3px;
}
.tier-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}
.tier-name { font-size: 18px; font-weight: 700; }
.tier-price {
  font-family: var(--f-mono);
  font-size: 11px;
  color: var(--c-text-dim);
}
.tier-snippet {
  margin-top: var(--s-4);
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  padding: var(--s-3) var(--s-4);
  font-family: var(--f-mono);
  font-size: 11.5px;
  color: var(--c-text-mid);
  line-height: 1.6;
  overflow-x: auto;
}
.tier-snippet .cmd-prompt { color: var(--c-accent); }
.tier-snippet .cmd-flag { color: var(--c-text-dim); }
.tier-snippet .cmd-str { color: #066D7D; }
.tier-desc {
  margin-top: var(--s-4);
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--c-text-mid);
}
.tier-list {
  margin-top: var(--s-5);
  display: grid;
  gap: var(--s-2);
  font-size: 13px;
}
.tier-list li {
  display: flex;
  gap: 10px;
  align-items: baseline;
  color: var(--c-text-mid);
}
.tier-list li::before {
  content: '+';
  color: var(--c-accent);
  font-family: var(--f-mono);
  font-weight: 600;
}
.tier-cta {
  margin-top: var(--s-6);
}

/* ===== Research recent (paper variant) ===== */
.section.paper {
  background: var(--c-bg-paper);
  color: var(--c-text-paper);
  border-top: 0;
}
.section.paper .eyebrow { color: var(--c-text-paper-mid); }
.section.paper .eyebrow .dot { background: var(--c-text-paper); box-shadow: none; }
.section.paper h2 { color: var(--c-text-paper); }
.section.paper .lede { color: var(--c-text-paper-mid); }

.papers {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--c-border-paper);
}
@media (max-width: 880px) { .papers { grid-template-columns: 1fr; } }
.paper-item {
  padding: var(--s-6) var(--s-6) var(--s-6) 0;
  border-right: 1px solid var(--c-border-paper);
}
.papers > .paper-item:last-child { border-right: 0; padding-right: 0; }
.papers > .paper-item:not(:first-child) { padding-left: var(--s-6); }
@media (max-width: 880px) {
  .paper-item { border-right: 0; border-bottom: 1px solid var(--c-border-paper); padding: var(--s-5) 0 !important; }
  .papers > .paper-item:last-child { border-bottom: 0; }
}
.paper-meta {
  font-family: var(--f-mono);
  font-size: 11px;
  color: var(--c-text-paper-mid);
  letter-spacing: 0.06em;
  display: flex;
  gap: var(--s-3);
}
.paper-meta .type {
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-weight: 600;
}
.paper-title {
  margin-top: var(--s-3);
  font-family: var(--f-serif);
  font-size: 22px;
  line-height: 1.25;
  font-weight: 600;
  color: var(--c-text-paper);
  letter-spacing: -0.005em;
}
.paper-abstract {
  margin-top: var(--s-3);
  font-size: 14px;
  line-height: 1.6;
  color: var(--c-text-paper-mid);
}
.paper-link {
  margin-top: var(--s-4);
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  font-size: 13px;
  color: var(--c-text-paper);
  font-weight: 500;
  border-bottom: 1px solid var(--c-text-paper);
  padding-bottom: 2px;
}

/* ===== Final CTA ===== */
.final-cta {
  padding: var(--s-10) 0;
  border-top: 1px solid var(--c-border);
  position: relative;
  overflow: hidden;
}
.final-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(600px 400px at 80% 50%, rgba(7,149,168,0.10), transparent 65%);
  pointer-events: none;
}
.final-cta .container { position: relative; z-index: 1; }
.final-cta h2 {
  font-size: clamp(32px, 4vw, 52px);
  max-width: 720px;
}
.final-cta h2 .accent { color: var(--c-accent); }
.final-cta .lede {
  margin-top: var(--s-5);
  font-size: 16px;
  color: var(--c-text-mid);
  max-width: 580px;
}
.final-cta .cta-row {
  margin-top: var(--s-7);
  display: flex;
  gap: var(--s-4);
  flex-wrap: wrap;
}

/* ===== Footer (full) ===== */
.footer {
  background: var(--c-bg);
  padding: var(--s-9) 0 var(--s-5);
  border-top: 1px solid var(--c-border);
  font-size: 13px;
  color: var(--c-text-dim);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: var(--s-7);
  padding-bottom: var(--s-7);
  border-bottom: 1px solid var(--c-border);
}
@media (max-width: 880px) { .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--s-5); } }
.footer-brand-row {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  color: var(--c-text);
}
.footer-brand-row .word {
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -0.02em;
}
.footer-brand-row .cn {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--c-text-mid);
}
.footer-tag {
  margin-top: var(--s-3);
  font-size: 13px;
  line-height: 1.6;
  color: var(--c-text-mid);
  max-width: 340px;
}
.footer-locs {
  margin-top: var(--s-4);
  display: grid;
  gap: var(--s-2);
  font-size: 12px;
  color: var(--c-text-dim);
}
.footer-locs .loc { display: flex; gap: var(--s-3); }
.footer-locs .loc .k {
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-text-faint);
  min-width: 70px;
}
.footer h5 {
  font-family: var(--f-mono);
  color: var(--c-text);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin: 0 0 var(--s-4) 0;
  font-weight: 500;
}
.footer-links { display: grid; gap: var(--s-3); }
.footer-links a {
  color: var(--c-text-mid);
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--c-text); }
.footer-bottom {
  padding-top: var(--s-5);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--s-3);
  font-size: 12px;
  color: var(--c-text-dim);
}
.footer-bottom .legals {
  display: inline-flex;
  gap: var(--s-3);
}
.footer-bottom a:hover { color: var(--c-text); }


/* ============================================================
   BOYUBO v2 · INNER PAGES  (47 个内页通用样式)
   ============================================================ */

/* ===== Nav · Dropdown (v2 dark) ===== */
.nav-menu .dropdown-wrap { position: relative; }
.nav-menu .has-dropdown::after {
  content: '';
  display: inline-block;
  width: 6px; height: 6px;
  border-right: 1.4px solid currentColor;
  border-bottom: 1.4px solid currentColor;
  transform: rotate(45deg) translateY(-2px);
  margin-left: 7px;
  opacity: 0.55;
  transition: transform 0.2s var(--ease-out), opacity 0.2s;
  vertical-align: middle;
}
.nav-menu .dropdown-wrap:hover .has-dropdown::after { opacity: 1; transform: rotate(225deg) translateY(0); }

.nav-menu .dropdown {
  position: absolute;
  top: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%) translateY(-6px);
  min-width: 720px;
  max-width: 880px;
  background: var(--c-bg-elevated);
  border: 1px solid var(--c-border-mid);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--s-4);
  opacity: 0;
  pointer-events: none;
  visibility: hidden;
  transition: opacity 0.2s var(--ease-out), transform 0.2s var(--ease-out), visibility 0s linear 0.2s;
  z-index: 110;
}
.nav-menu .dropdown::before {
  content: '';
  position: absolute;
  top: -7px; left: 0; right: 0;
  height: 7px;
}
.nav-menu .dropdown-wrap:hover .dropdown,
.nav-menu .dropdown-wrap:focus-within .dropdown {
  opacity: 1;
  pointer-events: auto;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
  transition-delay: 0s;
}
.nav-menu .dropdown-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2px;
}
.nav-menu .dropdown-item {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 12px;
  align-items: start;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  transition: background 0.15s var(--ease-out);
  color: var(--c-text);
}
.nav-menu .dropdown-item:hover { background: var(--c-accent-soft); }
.nav-menu .dropdown-item .di-icon {
  width: 32px; height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(10,11,16,0.04);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  color: var(--c-accent);
  flex-shrink: 0;
}
.nav-menu .dropdown-item:hover .di-icon { border-color: var(--c-accent); background: var(--c-accent-soft); }
.nav-menu .dropdown-item .di-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--c-text);
  line-height: 1.3;
}
.nav-menu .dropdown-item .di-desc {
  margin-top: 3px;
  font-size: 12px;
  color: var(--c-text-dim);
  line-height: 1.4;
}
@media (max-width: 1080px) {
  .nav-menu .dropdown { min-width: 600px; }
  .nav-menu .dropdown-grid { grid-template-columns: 1fr; }
}

/* ===== Page Hero (内页通用 hero · 深色) ===== */
.page-hero {
  position: relative;
  padding: calc(var(--nav-h) + var(--s-9)) 0 var(--s-9);
  overflow: hidden;
  border-bottom: 1px solid var(--c-border);
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(900px 500px at 85% 5%, rgba(7,149,168,0.08), transparent 60%),
    radial-gradient(700px 400px at 5% 95%, rgba(7,149,168,0.04), transparent 60%);
  pointer-events: none;
}
.page-hero .container { position: relative; z-index: 1; }
.page-hero .eyebrow { color: var(--c-text-mid); }
.page-hero h1 {
  margin-top: var(--s-4);
  max-width: 880px;
}
.page-hero .lead {
  margin-top: var(--s-5);
  font-size: 17px;
  line-height: 1.65;
  color: var(--c-text-mid);
  max-width: 720px;
}
.page-hero .hero-cta {
  margin-top: var(--s-7);
  display: flex;
  gap: var(--s-4);
  flex-wrap: wrap;
  align-items: center;
}

/* ===== Poster Banner (内页 3 张 banner · 深色 + 大图) ===== */
.poster-banner {
  position: relative;
  padding: var(--s-9) 0;
  border-top: 1px solid var(--c-border);
  background: var(--c-bg-elevated);
  overflow: hidden;
}
.poster-banner .poster-banner-img {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.30;
}
.poster-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(10,11,16,0.94) 0%, rgba(10,11,16,0.72) 55%, rgba(10,11,16,0.50) 100%),
    linear-gradient(180deg, rgba(10,11,16,0.40) 0%, rgba(10,11,16,0.80) 100%);
  pointer-events: none;
}
.poster-banner.right-align::before {
  background:
    linear-gradient(270deg, rgba(10,11,16,0.94) 0%, rgba(10,11,16,0.72) 55%, rgba(10,11,16,0.50) 100%),
    linear-gradient(180deg, rgba(10,11,16,0.40) 0%, rgba(10,11,16,0.80) 100%);
}
.poster-banner::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(90deg, rgba(255,255,255,0.018) 0 1px, transparent 1px 100px),
    repeating-linear-gradient(0deg,  rgba(255,255,255,0.018) 0 1px, transparent 1px 100px);
  pointer-events: none;
}
.poster-banner .poster-banner-content {
  position: relative;
  z-index: 2;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--s-5);
  max-width: calc(var(--max-w) - var(--s-5) * 2);
}
.poster-banner .poster-banner-content {
  max-width: 560px;
  margin-left: var(--s-5);
}
.poster-banner.right-align .poster-banner-content {
  margin-left: auto;
  margin-right: var(--s-5);
}
@media (min-width: 880px) {
  .poster-banner .poster-banner-content {
    margin-left: calc((100% - var(--max-w)) / 2 + var(--s-5));
    max-width: 560px;
  }
  .poster-banner.right-align .poster-banner-content {
    margin-left: auto;
    margin-right: calc((100% - var(--max-w)) / 2 + var(--s-5));
  }
}
.poster-banner h2 {
  margin-top: var(--s-4);
  color: var(--c-text-paper);
  font-size: clamp(26px, 2.8vw, 38px);
}
.poster-banner p {
  margin-top: var(--s-4);
  font-size: 15.5px;
  line-height: 1.65;
  color: var(--c-text-paper-mid);
}
.poster-banner .eyebrow {
  color: var(--c-text-paper-mid);
}
.poster-banner .eyebrow .dot {
  background: var(--c-accent);
  box-shadow: 0 0 8px rgba(7,149,168,0.5);
}
.poster-banner > div:last-child:not(.poster-banner-img):not(.poster-banner-content) {
  margin-top: var(--s-5);
}
.poster-banner .poster-banner-content > div:last-child {
  margin-top: var(--s-5);
}

/* ===== banner 内的 bullet 列表（拆分长段落用） ===== */
.poster-banner .banner-text {
  margin-top: var(--s-4);
}
.poster-banner .banner-text > p {
  margin: 0 0 var(--s-4) 0;
  font-size: 15.5px;
  line-height: 1.65;
  color: var(--c-text-paper-mid);
}
.poster-banner .banner-points {
  list-style: none;
  padding: 0;
  margin: var(--s-4) 0 0 0;
  display: grid;
  gap: 10px;
}
.poster-banner .banner-points li {
  position: relative;
  padding-left: 18px;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--c-text-paper-mid);
}
.poster-banner .banner-points li::before {
  content: '·';
  position: absolute;
  left: 4px;
  top: -2px;
  color: var(--c-accent);
  font-family: var(--f-mono);
  font-weight: 700;
  font-size: 20px;
  line-height: 1;
}
@media (max-width: 640px) {
  .poster-banner .banner-text > p { font-size: 14.5px; }
  .poster-banner .banner-points { gap: 8px; }
  .poster-banner .banner-points li { font-size: 13.5px; padding-left: 14px; }
  .poster-banner .banner-points li::before { left: 2px; font-size: 16px; }
}

/* ===== Generic Section · soft 变体 ===== */
.section.soft {
  background: var(--c-bg-elevated);
}
.section .section-head h2 { color: var(--c-text); }
.section .section-head p {
  margin-top: var(--s-4);
  font-size: 16px;
  line-height: 1.65;
  color: var(--c-text-mid);
  max-width: 680px;
}

/* ===== Card Grid (内页 simple_cards 输出的 .grid .grid-N .card) ===== */
.grid {
  display: grid;
  gap: 1px;
  background: var(--c-border);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 980px) { .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }

.grid .card {
  background: var(--c-bg);
  padding: var(--s-6);
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
  transition: background 0.2s var(--ease-out);
}
.grid .card:hover { background: var(--c-bg-elevated); }
.grid .card h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--c-text);
  letter-spacing: -0.01em;
  margin: 0;
  line-height: 1.3;
}
.grid .card p {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--c-text-mid);
  margin: 0;
}
.grid a.card {
  text-decoration: none;
  color: inherit;
  position: relative;
}
.grid a.card::after {
  content: '→';
  position: absolute;
  bottom: var(--s-5);
  right: var(--s-5);
  color: var(--c-text-faint);
  font-family: var(--f-mono);
  transition: transform 0.2s var(--ease-out), color 0.2s;
}
.grid a.card:hover::after { color: var(--c-accent); transform: translateX(3px); }

/* ===== Tag chip ===== */
.tag {
  display: inline-block;
  padding: 3px 8px;
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--c-accent);
  background: var(--c-accent-soft);
  border: 1px solid rgba(7,149,168,0.3);
  border-radius: 3px;
  text-transform: uppercase;
}

/* ===== Big CTA (内页底部 · 别名 final-cta) ===== */
.big-cta {
  padding: var(--s-10) 0;
  border-top: 1px solid var(--c-border);
  position: relative;
  overflow: hidden;
}
.big-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(700px 400px at 70% 50%, rgba(7,149,168,0.10), transparent 65%);
  pointer-events: none;
}
.big-cta .container { position: relative; z-index: 1; }
.big-cta h2 {
  font-size: clamp(28px, 3.4vw, 44px);
  max-width: 760px;
  color: var(--c-text);
}
.big-cta p {
  margin-top: var(--s-5);
  font-size: 16px;
  color: var(--c-text-mid);
  max-width: 580px;
  line-height: 1.6;
}
.big-cta .btn-row {
  margin-top: var(--s-7);
  display: flex;
  gap: var(--s-4);
  flex-wrap: wrap;
}
.btn-ghost.on-dark { color: var(--c-text); }

/* ===== Brand wordmark (旧 nav 兼容 - logo 内的 byoobai 字母 + 弧线) ===== */
.brand {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  line-height: 1;
}
.brand-wordmark {
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.02em;
  color: var(--c-text);
}
.brand-curve {
  width: 60px;
  height: 5px;
  color: var(--c-accent);
  opacity: 0.7;
}
.brand-divider {
  display: inline-block;
  width: 1px;
  height: 16px;
  background: var(--c-border-mid);
  margin: 0 4px;
  align-self: center;
}
.brand-cn {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--c-text-mid);
  align-self: center;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

/* ===== Hide legacy decorations (v1 残留) ===== */
.deco-orb { display: none !important; }
.cursor-zone { cursor: default; }

/* ===== Reveal animation (与 main.js 兼容; 但即使 main.js 不加载也不会破样) ===== */
.reveal, .reveal-stagger > * {
  opacity: 1;
  transform: none;
}

/* ===== Anchored heading scroll offset ===== */
:target {
  scroll-margin-top: calc(var(--nav-h) + 16px);
}

/* 空 eyebrow（仅有 dot 无文字内容）隐藏 */
.eyebrow:has(> .dot:only-child) { display: none; }


/* ===== Lead form (留资表单 · 极简风) ===== */
.lead-form {
  margin-top: var(--s-7);
  max-width: 720px;
}
.lead-form .row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s-4);
  margin-bottom: var(--s-4);
}
.lead-form .row.single {
  grid-template-columns: 1fr;
}
@media (max-width: 640px) {
  .lead-form .row { grid-template-columns: 1fr; }
}
.lead-form label {
  display: block;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-text-dim);
  margin-bottom: var(--s-2);
  font-weight: 500;
}
.lead-form label .req {
  color: var(--c-accent);
  margin-left: 4px;
}
.lead-form input,
.lead-form select,
.lead-form textarea {
  width: 100%;
  font-family: var(--f-sans);
  font-size: 15px;
  padding: 12px 14px;
  background: var(--c-bg-card);
  border: 1px solid var(--c-border-mid);
  border-radius: var(--radius-md);
  color: var(--c-text);
  transition: border-color 0.15s, box-shadow 0.15s;
  outline: none;
  box-sizing: border-box;
}
.lead-form input:focus,
.lead-form select:focus,
.lead-form textarea:focus {
  border-color: var(--c-accent);
  box-shadow: 0 0 0 3px var(--c-accent-soft);
}
.lead-form textarea {
  resize: vertical;
  min-height: 100px;
  line-height: 1.6;
  font-family: var(--f-sans);
}
.lead-form .actions {
  margin-top: var(--s-5);
  display: flex;
  align-items: center;
  gap: var(--s-4);
  flex-wrap: wrap;
}
.lead-form .hint {
  font-size: 13px;
  color: var(--c-text-dim);
}
.lead-form .status {
  margin-top: var(--s-4);
  padding: 12px 14px;
  border-radius: var(--radius-md);
  font-size: 14px;
  display: none;
}
.lead-form .status.ok {
  display: block;
  background: rgba(14,159,110,0.10);
  border: 1px solid rgba(14,159,110,0.35);
  color: var(--c-success);
}
.lead-form .status.err {
  display: block;
  background: rgba(220,38,38,0.08);
  border: 1px solid rgba(220,38,38,0.30);
  color: var(--c-danger);
}

/* ===== Breadcrumb (子页面包屑) ===== */
.breadcrumb {
  padding: calc(var(--nav-h) + var(--s-5)) 0 0;
  border-bottom: 0;
  background: var(--c-bg);
}
.breadcrumb .container {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--c-text-dim);
  text-transform: uppercase;
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2);
  align-items: center;
}
.breadcrumb a {
  color: var(--c-text-mid);
  border-bottom: 1px solid transparent;
  transition: color 0.15s, border-color 0.15s;
}
.breadcrumb a:hover {
  color: var(--c-accent);
  border-bottom-color: var(--c-accent);
}
.breadcrumb .sep {
  color: var(--c-text-faint);
  margin: 0 4px;
}
.breadcrumb .current {
  color: var(--c-text);
  font-weight: 500;
}
/* 如果有 breadcrumb，page-hero 顶部 padding 缩短 */
.breadcrumb + .page-hero {
  padding-top: var(--s-6);
}

/* ===== Page Hero · minimal 变体（用于 contact 等极简页）===== */
.page-hero.page-hero-min {
  padding: calc(var(--nav-h) + var(--s-7)) 0 var(--s-7);
  border-bottom: 1px solid var(--c-border);
}
.page-hero.page-hero-min h1 {
  font-size: clamp(32px, 3.6vw, 48px);
}
.page-hero.page-hero-min .lead {
  margin-top: var(--s-4);
  font-family: var(--f-mono);
  font-size: 15px;
  color: var(--c-text-mid);
}

/* ===== Contact list (极简两列表格风格 · Stripe / Linear like) ===== */
.contact-list {
  margin-top: var(--s-7);
  border-top: 1px solid var(--c-border);
}
.contact-list .row {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: var(--s-6);
  padding: var(--s-5) 0;
  border-bottom: 1px solid var(--c-border);
  align-items: baseline;
}
.contact-list .label {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-text-dim);
  font-weight: 500;
}
.contact-list .value {
  font-size: 18px;
  color: var(--c-text);
  font-weight: 500;
  line-height: 1.4;
}
.contact-list .value a {
  color: var(--c-accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.15s;
}
.contact-list .value a:hover {
  border-bottom-color: var(--c-accent);
}
.contact-list .value .note {
  display: block;
  margin-top: var(--s-2);
  font-size: 13px;
  font-weight: 400;
  color: var(--c-text-dim);
  font-family: var(--f-sans);
}
@media (max-width: 640px) {
  .contact-list .row {
    grid-template-columns: 1fr;
    gap: var(--s-2);
  }
}

/* ===== Mobile nav fallback (隐藏 dropdown 但保留链接可访问) ===== */
@media (max-width: 880px) {
  .nav-inner { padding: 0 var(--s-4); gap: var(--s-3); }
  .nav-cta { gap: 6px; }
  .nav-cta .btn-ghost,
  .nav-cta .btn-link { display: none; }
  .nav-cta .btn-primary {
    padding: 8px 12px;
    font-size: 12px;
    letter-spacing: -0.01em;
  }
  .nav-cta .btn-primary .arrow { display: none; }
  .logo .cn { font-size: 12px; }
  .logo .word { font-size: 16px; }
}
@media (max-width: 480px) {
  .nav-cta .btn-primary {
    padding: 7px 10px;
    font-size: 11px;
  }
  .logo { gap: 6px; }
}

/* ===== Mobile: hero / page-hero 字号缩小 + 容器内边距压缩 ===== */
@media (max-width: 640px) {
  .container { padding: 0 var(--s-4); }
  .page-hero { padding: calc(var(--nav-h) + var(--s-6)) 0 var(--s-6); }
  .page-hero h1 { font-size: clamp(28px, 8vw, 38px); }
  .page-hero .lead { font-size: 15px; }
  .hero-cta { flex-direction: column; align-items: stretch; }
  .hero-cta .btn { justify-content: center; }
  .section { padding: var(--s-7) 0; }
  .section .section-head { margin-bottom: var(--s-5); }
  .section .section-head h2 { font-size: clamp(24px, 7vw, 32px); }
  .poster-banner { padding: var(--s-7) 0; }
  .poster-banner h2 { font-size: clamp(22px, 6.5vw, 30px); }
  .poster-banner p { font-size: 14.5px; }
  .big-cta h2 { font-size: clamp(24px, 7vw, 34px); }
  .big-cta .btn-row { flex-direction: column; align-items: stretch; }
  .big-cta .btn-row .btn { justify-content: center; }
}

/* ===== Mobile: footer 4 列 → 2 列 → 1 列 ===== */
@media (max-width: 880px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--s-6); }
}
@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { font-size: 11px; }
  .footer-bottom .legals { gap: var(--s-2); }
}

/* ===== Mobile: 表单按钮全宽 ===== */
@media (max-width: 640px) {
  .lead-form .actions { flex-direction: column; align-items: stretch; }
  .lead-form .actions .btn { justify-content: center; width: 100%; }
  .lead-form .hint { text-align: center; }
}

/* ===== Mobile: contact-list 单列 + 行间距 ===== */
@media (max-width: 640px) {
  .contact-list .row { padding: var(--s-4) 0; }
  .contact-list .value { font-size: 16px; }
}

/* ===== Mobile: 面包屑紧凑 ===== */
@media (max-width: 640px) {
  .breadcrumb { padding: calc(var(--nav-h) + var(--s-4)) 0 0; }
  .breadcrumb .container { font-size: 10px; }
}

/* ===== Mobile: 首页 hero stages 太挤 → 改竖排 ===== */
@media (max-width: 640px) {
  .hero-meta { grid-template-columns: 1fr 1fr 1fr; gap: var(--s-2); }
  .hero-meta-item .k { font-size: 9px; }
  .hero-meta-item .v { font-size: 12px; }
  .hero-meta-item .v .sub { display: block; font-size: 10px; }
}


/* ============================================================
   移动端密度优化 · 换形式而非缩内容（2026-05-24）
   桌面端布局完全不动，仅在 ≤ 640px / ≤ 480px 内重新排版
   ============================================================ */

/* ===== 块 1 · Footer 4 列 → 2×2 网格 ===== */
@media (max-width: 880px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--s-5);
  }
  .footer-grid > div:first-child {
    grid-column: 1 / -1;   /* 品牌区占满全宽 */
  }
}
@media (max-width: 360px) {
  .footer-grid { grid-template-columns: 1fr; gap: var(--s-4); }
}
@media (max-width: 640px) {
  .footer { padding: var(--s-6) 0 var(--s-4); }
  .footer h5 { margin-bottom: var(--s-2); font-size: 10px; }
  .footer-links { gap: var(--s-2); }
  .footer-links li a { font-size: 13px; }
  .footer-tag { font-size: 13px; margin-top: var(--s-3); }
  .footer-locs { margin-top: var(--s-3); }
  .footer-locs .loc { font-size: 11.5px; }
  .footer-bottom { font-size: 11px; }
}

/* ===== 块 2 · Industries 15 项 → list-row ===== */
/* .ind-feature 桌面是 3 列大卡，移动直接挪到 list 后面（隐藏）让 ind-list 接管 */
@media (max-width: 640px) {
  /* 让 .ind-feature 3 个主推卡也变成单列紧凑形式 */
  .ind-feature {
    grid-template-columns: 1fr;
    gap: 1px;
    background: var(--c-border);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-md);
    margin-bottom: var(--s-3);
  }
  .ind-card {
    border-radius: 0;
    border: 0;
    display: grid;
    grid-template-columns: 76px 1fr;
    gap: var(--s-3);
    align-items: center;
    padding: var(--s-3);
    min-height: 76px;
  }
  .ind-cover {
    height: 60px;
    border: 0;
    border-radius: var(--radius-sm);
  }
  .ind-cover .ind-overlay,
  .ind-cover .ind-conf { display: none; }
  .ind-cover .cat-tag {
    font-size: 8px;
    padding: 1px 4px;
    top: 4px;
    left: 4px;
  }
  .ind-card:hover { transform: none; }
  .ind-body { padding: 0; }
  .ind-title { font-size: 14px; line-height: 1.3; margin-bottom: 2px; }
  .ind-pain {
    font-size: 12px;
    line-height: 1.4;
    margin-top: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
  .ind-more { display: none; }

  /* ind-list-item 极紧凑 */
  .ind-list-item {
    grid-template-columns: 56px 1fr;
    gap: var(--s-2);
    padding: var(--s-3) var(--s-2);
    align-items: center;
  }
  .ind-list-item .cat {
    font-size: 9px;
    letter-spacing: 0.06em;
  }
  .ind-list-item .ttl {
    font-size: 13.5px;
    grid-column: 2;
    line-height: 1.3;
  }
  .ind-list-item .desc {
    font-size: 11.5px;
    grid-column: 2;
    color: var(--c-text-dim);
    line-height: 1.4;
    margin-top: 2px;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
  .ind-list-item .arr { display: none; }
}

/* ===== 块 3 · Research papers → list-row ===== */
@media (max-width: 640px) {
  .papers {
    grid-template-columns: 1fr;
    gap: 1px;
    background: var(--c-border-paper);
  }
  .paper-item {
    padding: var(--s-3) 0;
    border-right: 0;
    border-bottom: 1px solid var(--c-border-paper);
  }
  .papers > .paper-item:last-child { border-bottom: 0; }
  .papers > .paper-item:not(:first-child) { padding-left: 0; }
  .paper-meta { font-size: 10px; gap: var(--s-2); }
  .paper-title { font-size: 16px; line-height: 1.3; margin-top: var(--s-2); }
  .paper-abstract {
    font-size: 12.5px;
    margin-top: var(--s-2);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
  .paper-link { font-size: 12px; margin-top: var(--s-2); }
}

/* ===== 块 4 · Stages → 手风琴（用 <details> 实现）===== */
/* HTML 改动：把 <article class="stage"> 包成 <details class="stage" open>...</details> */
/* 这里先写好样式，HTML 改动在 index.html / index-v2.html 单独做 */
@media (max-width: 640px) {
  .stages {
    grid-template-columns: 1fr;
    border-top: 1px solid var(--c-border-paper);
  }
  /* stage 容器变 details */
  details.stage {
    padding: 0;
    border-right: 0;
    border-bottom: 1px solid var(--c-border-paper);
    display: block;
  }
  details.stage:last-child { border-bottom: 0; }
  /* summary 头部（默认显示部分）*/
  details.stage > summary {
    cursor: pointer;
    list-style: none;
    padding: var(--s-4) 0;
    display: flex;
    align-items: center;
    gap: var(--s-3);
    position: relative;
  }
  details.stage > summary::-webkit-details-marker { display: none; }
  details.stage > summary::after {
    content: '+';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    font-family: var(--f-mono);
    color: var(--c-text-paper-mid);
    font-size: 22px;
    line-height: 1;
    transition: transform 0.2s var(--ease-out);
  }
  details.stage[open] > summary::after {
    content: '−';
    transform: translateY(-50%) rotate(0);
  }
  /* summary 内部子元素紧凑展示 */
  details.stage > summary .stage-num {
    flex-shrink: 0;
    font-size: 10px;
  }
  details.stage > summary .stage-title {
    font-size: 16px;
    margin-top: 0;
  }
  /* 展开后的详细内容 */
  details.stage[open] {
    padding-bottom: var(--s-4);
  }
  details.stage .stage-subtitle,
  details.stage .stage-body,
  details.stage .stage-list,
  details.stage .stage-foot {
    margin-left: var(--s-3);
  }
  details.stage .stage-body { font-size: 13.5px; margin-top: var(--s-3); }
  details.stage .stage-list { font-size: 12.5px; }
  details.stage .stage-list li { padding: 6px 0; }
  details.stage .stage-foot { margin-top: var(--s-4); font-size: 13px; }
}

/* 块 4 补充：现有 <article class="stage"> 结构的紧凑化（未来如改 HTML 包 details，上面 details.stage CSS 自动生效） */
@media (max-width: 640px) {
  article.stage {
    padding: var(--s-5) 0;
    border-right: 0;
    border-bottom: 1px solid var(--c-border-paper);
  }
  .stages > article.stage:last-child { border-bottom: 0; }
  .stages > article.stage:not(:first-child) { padding-left: 0; }
  article.stage .stage-num { font-size: 10px; }
  article.stage .stage-title { font-size: 18px; line-height: 1.2; }
  article.stage .stage-subtitle { font-size: 12px; margin-top: 4px; }
  article.stage .stage-body { font-size: 13.5px; max-width: none; margin-top: var(--s-3); }
  article.stage .stage-list { font-size: 12.5px; margin-top: var(--s-3); }
  article.stage .stage-list li { padding: 6px 0; }
  article.stage .stage-foot { margin-top: var(--s-3); font-size: 12.5px; }
}

/* ===== 块 5 · 能力卡 6 张（section1 .grid.grid-3）→ 2 列 chip 矩阵 ===== */
@media (max-width: 640px) {
  .section .grid.grid-3,
  .section .grid.grid-4 {
    grid-template-columns: 1fr 1fr;   /* 强制 2 列 */
  }
  .section .grid.grid-3 .card,
  .section .grid.grid-4 .card,
  .section .grid.grid-2 .card {
    padding: var(--s-4) var(--s-3);
    gap: var(--s-2);
  }
  .section .grid .card h4 {
    font-size: 13.5px;
    line-height: 1.3;
  }
  .section .grid .card p {
    font-size: 11.5px;
    line-height: 1.45;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
  .section .grid a.card::after {
    bottom: var(--s-3);
    right: var(--s-3);
    font-size: 11px;
  }
}
@media (max-width: 360px) {
  .section .grid.grid-3,
  .section .grid.grid-4,
  .section .grid.grid-2 {
    grid-template-columns: 1fr;   /* 极小屏单列 */
  }
}

/* ===== 块 6 · Sub-solution 矩阵 / cap-grid / tier-grid → 单列紧凑 ===== */
@media (max-width: 640px) {
  /* cap-grid（首页 6 张能力 tile）2 列紧凑 */
  .cap-grid {
    grid-template-columns: 1fr 1fr;
  }
  .cap-tile {
    padding: var(--s-4) var(--s-3);
    gap: var(--s-2);
  }
  .cap-title { font-size: 14.5px; }
  .cap-desc { font-size: 11.5px; }
  .cap-cta { font-size: 11.5px; margin-top: var(--s-3); }
  .cap-path { font-size: 10px; }

  /* tier-grid 3 档变单列 + 紧凑 */
  .tier-grid { grid-template-columns: 1fr; }
  .tier {
    padding: var(--s-5);
  }
  .tier-snippet {
    padding: var(--s-3);
    font-size: 11px;
  }
  .tier-list { gap: 4px; }
  .tier-list li { font-size: 12.5px; }

  /* prod-grid (SaaS 产品卡) 单列 + prod-mock 减薄 */
  .prod-grid, .prod-grid.two-cols {
    grid-template-columns: 1fr;
  }

  /* pre 代码块在小屏可滚动 + 不撑开父容器 */
  pre, .tier-snippet {
    max-width: 100%;
    overflow-x: auto;
    word-break: break-all;
    white-space: pre-wrap;
  }
  /* console 内的 pre (JSON 块) 仍允许横向滚动 */
  .console pre, .json-block {
    word-break: normal;
    white-space: pre;
  }
  /* console 容器本身限宽，溢出的 SVG 检测框 / pre 由 console overflow hidden 裁剪 */
  .console { max-width: 100%; }
  .prod-mock {
    height: 100px;
    padding: var(--s-3);
  }
  .prod-mock-head { font-size: 9px; }
  .prod-body { padding: var(--s-4); }
  .prod-name { font-size: 16px; }
  .prod-desc { font-size: 12.5px; }
  .prod-feats { font-size: 10px; }
  .prod-cta { font-size: 12px; margin-top: var(--s-3); }
}

/* ===== 块 7 · Poster Banner 减薄 ===== */
@media (max-width: 640px) {
  .poster-banner {
    padding: var(--s-6) 0;   /* 96 → 32 */
  }
  .poster-banner .poster-banner-img {
    opacity: 0.22;   /* 图淡一点，文字更清晰 */
  }
  .poster-banner .poster-banner-content {
    max-width: 100%;
    margin: 0;
    padding: 0 var(--s-4);
  }
  .poster-banner.right-align .poster-banner-content {
    margin: 0;
  }
  .poster-banner h2 {
    font-size: clamp(20px, 6vw, 26px);
    margin-top: var(--s-3);
  }
  /* banner-text 引子 + bullets 紧凑 */
  .poster-banner .banner-text {
    margin-top: var(--s-3);
  }
  .poster-banner .banner-text > p {
    font-size: 13.5px;
    margin-bottom: var(--s-3);
  }
  .poster-banner .banner-points {
    gap: 6px;
  }
  .poster-banner .banner-points li {
    font-size: 12.5px;
    padding-left: 12px;
  }
  .poster-banner .banner-points li::before {
    left: 0;
    font-size: 14px;
  }
}

/* ===== 块 8 · Hero / page-hero 紧凑型 ===== */
@media (max-width: 640px) {
  /* page-hero（内页 hero）紧凑 */
  .page-hero {
    padding: calc(var(--nav-h) + var(--s-5)) 0 var(--s-5);
  }
  .page-hero h1 {
    font-size: clamp(26px, 7.5vw, 34px);
    line-height: 1.15;
  }
  .page-hero .lead {
    font-size: 14px;
    margin-top: var(--s-3);
    display: -webkit-box;
    -webkit-line-clamp: 5;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
  .page-hero .hero-cta {
    margin-top: var(--s-5);
    flex-direction: column;
    align-items: stretch;
  }
  .page-hero .hero-cta .btn {
    justify-content: center;
  }

  /* 首页 .hero（含 console）紧凑 */
  .hero {
    padding: calc(var(--nav-h) + var(--s-5)) 0 var(--s-5);
  }
  .hero-grid {
    gap: var(--s-5);
  }
  .hero-left h1 {
    font-size: clamp(28px, 8vw, 38px);
  }
  .hero-lede {
    font-size: 14px;
    margin-top: var(--s-3);
  }
  .hero-cta-row {
    margin-top: var(--s-4);
  }
  .hero-meta {
    margin-top: var(--s-5);
    padding-top: var(--s-4);
  }
  /* console 内部紧凑 */
  .console-tabs { font-size: 9px; }
  .console-status { font-size: 9px; }
  .json-block { font-size: 10px; padding: var(--s-3); }
  .metric { font-size: 11px; }

  /* section-roadmap 紧凑 */
  .section-roadmap { padding: var(--s-7) 0; }
  .section-roadmap h2 { font-size: clamp(22px, 6vw, 30px); }
  .section-roadmap .lede { font-size: 14px; }
  .section-head { margin-bottom: var(--s-5); }

  /* big-cta / final-cta 紧凑 */
  .big-cta, .final-cta {
    padding: var(--s-7) 0;
  }
  .big-cta h2, .final-cta h2 {
    font-size: clamp(22px, 6vw, 30px);
  }
  .big-cta p, .final-cta .lede {
    font-size: 14px;
    margin-top: var(--s-3);
  }
  .big-cta .btn-row, .final-cta .cta-row {
    margin-top: var(--s-5);
    flex-direction: column;
    align-items: stretch;
  }
  .big-cta .btn-row .btn,
  .final-cta .cta-row .btn {
    justify-content: center;
  }
}