/* ============================================================
   Cortex 官网 · 临场智能概念站
   设计系统承接 DESIGN.md + brand-design 简报：
   石墨/暖白纸面/单一 Tiffany 信号绿，深浅色双主题。
   ============================================================ */

/* ---- Tokens：浅色（默认） ---- */
:root {
  --ink: oklch(18% 0.012 180);
  --ink-2: oklch(30% 0.012 180);
  --muted: oklch(47% 0.017 180);
  --paper: oklch(97% 0.009 78);
  --paper-2: oklch(93.5% 0.012 82);
  --surface: oklch(99% 0.004 80);
  --surface-2: oklch(96% 0.007 80);
  --line: oklch(85% 0.013 172);
  --line-soft: oklch(90% 0.01 172);
  --green: oklch(76% 0.142 171);
  --green-strong: oklch(70% 0.16 166);
  --green-soft: oklch(91% 0.06 170);
  --green-ink: oklch(30% 0.06 170);
  --device: oklch(20% 0.01 180);
  --device-dark: oklch(11% 0.01 180);
  --silver: oklch(80% 0.008 190);

  --hero-stage: linear-gradient(122deg, oklch(98% 0.008 78), oklch(90% 0.035 174)), var(--paper-2);
  --dark-panel: linear-gradient(150deg, oklch(22% 0.012 185), oklch(11% 0.01 182));
  --dark-panel-text: oklch(95% 0.01 180);
  --glass: oklch(97% 0.008 82 / 0.72);
  --glass-strong: oklch(98% 0.006 82 / 0.9);
  --glass-border: oklch(100% 0 0 / 0.55);
  --shadow: 0 34px 90px oklch(20% 0.015 170 / 0.16);
  --shadow-soft: 0 20px 50px oklch(20% 0.012 170 / 0.1);

  --radius: 22px;
  --max: 1180px;
  --band: min(calc(100% - 32px), 1240px);
  color-scheme: light;
}

/* ---- Tokens：深色 ---- */
:root[data-theme="dark"] {
  --ink: oklch(94% 0.008 180);
  --ink-2: oklch(83% 0.011 180);
  --muted: oklch(66% 0.015 180);
  --paper: oklch(14.5% 0.012 185);
  --paper-2: oklch(18% 0.013 185);
  --surface: oklch(20% 0.013 185);
  --surface-2: oklch(23% 0.014 185);
  --line: oklch(34% 0.014 185);
  --line-soft: oklch(28% 0.012 185);
  --green: oklch(80% 0.15 171);
  --green-strong: oklch(76% 0.16 168);
  --green-soft: oklch(30% 0.06 175);
  --green-ink: oklch(88% 0.09 172);
  --silver: oklch(82% 0.008 190);

  --hero-stage: radial-gradient(circle at 72% 24%, oklch(40% 0.09 172 / 0.55), transparent 60%), linear-gradient(150deg, oklch(21% 0.014 185), oklch(12% 0.01 185));
  --dark-panel: linear-gradient(150deg, oklch(24% 0.013 185), oklch(13% 0.01 182));
  --glass: oklch(17% 0.012 185 / 0.72);
  --glass-strong: oklch(19% 0.013 185 / 0.9);
  --glass-border: oklch(100% 0 0 / 0.08);
  --shadow: 0 34px 90px oklch(0% 0 0 / 0.5);
  --shadow-soft: 0 20px 50px oklch(0% 0 0 / 0.4);
  color-scheme: dark;
}

/* 跟随系统深色（未手动指定浅色时） */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ink: oklch(94% 0.008 180);
    --ink-2: oklch(83% 0.011 180);
    --muted: oklch(66% 0.015 180);
    --paper: oklch(14.5% 0.012 185);
    --paper-2: oklch(18% 0.013 185);
    --surface: oklch(20% 0.013 185);
    --surface-2: oklch(23% 0.014 185);
    --line: oklch(34% 0.014 185);
    --line-soft: oklch(28% 0.012 185);
    --green: oklch(80% 0.15 171);
    --green-strong: oklch(76% 0.16 168);
    --green-soft: oklch(30% 0.06 175);
    --green-ink: oklch(88% 0.09 172);
    --silver: oklch(82% 0.008 190);
    --hero-stage: radial-gradient(circle at 72% 24%, oklch(40% 0.09 172 / 0.55), transparent 60%), linear-gradient(150deg, oklch(21% 0.014 185), oklch(12% 0.01 185));
    --dark-panel: linear-gradient(150deg, oklch(24% 0.013 185), oklch(13% 0.01 182));
    --glass: oklch(17% 0.012 185 / 0.72);
    --glass-strong: oklch(19% 0.013 185 / 0.9);
    --glass-border: oklch(100% 0 0 / 0.08);
    --shadow: 0 34px 90px oklch(0% 0 0 / 0.5);
    --shadow-soft: 0 20px 50px oklch(0% 0 0 / 0.4);
    color-scheme: dark;
  }
}

/* ---- 基础 ---- */
* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  font-family: "Helvetica Neue", "SF Pro Display", "SF Pro Text", "PingFang SC",
    "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 78% 4%, var(--green-soft), transparent 30rem),
    linear-gradient(180deg, var(--paper), var(--paper-2));
  background-repeat: no-repeat;
  letter-spacing: 0;
  overflow-x: hidden;
  transition: background 300ms ease, color 300ms ease;
}

a {
  color: inherit;
  text-decoration: none;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 8px;
  z-index: 100;
  padding: 10px 16px;
  border-radius: 999px;
  background: var(--ink);
  color: var(--paper);
}
.skip-link:focus {
  left: 16px;
}

:focus-visible {
  outline: 2px solid var(--green-strong);
  outline-offset: 3px;
  border-radius: 6px;
}

h1, h2, h3, p {
  margin-top: 0;
}

em {
  font-style: normal;
  color: var(--green-strong);
}

strong {
  font-weight: 720;
  color: var(--ink);
}

/* ---- 页头 ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: var(--band);
  margin: 14px auto 0;
  padding: 10px 12px 10px 16px;
  border: 1px solid var(--glass-border);
  border-radius: 999px;
  background: var(--glass);
  box-shadow: 0 14px 38px oklch(20% 0.012 160 / 0.08);
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
  transition: box-shadow 220ms ease, background 220ms ease;
}

.site-header[data-elevated="true"] {
  background: var(--glass-strong);
  box-shadow: 0 18px 46px oklch(20% 0.012 160 / 0.16);
}

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  font-weight: 760;
  flex-shrink: 0;
}

/* 图标：确认版 C-dot 定稿件（final-assets 源，已裁切+透明化供网页用）。
   圆角是图形自带的，不要再加 CSS 圆角，否则二次切角。 */
.brand-icon-img {
  display: block;
  width: 34px;
  height: 34px;
  flex-shrink: 0;
}
.brand-icon-img.sm {
  width: 22px;
  height: 22px;
}

/* 字标：确认版 CORTEX（final-assets 源，已抠透明底供网页用）。
   浅色：石墨字 + 绿 X 直接显在纸面。
   深色：反相得亮字 + hue-rotate 复原 X 绿；透明底无需混合模式。 */
.wordmark-img {
  display: block;
  width: 118px;
  height: auto;
}
:root[data-theme="dark"] .wordmark-img {
  filter: invert(1) hue-rotate(180deg) saturate(1.15) brightness(1.02);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .wordmark-img {
    filter: invert(1) hue-rotate(180deg) saturate(1.15) brightness(1.02);
  }
}

.nav-links {
  display: flex;
  gap: 22px;
  font-size: 14px;
  color: var(--muted);
}
.nav-links a {
  transition: color 160ms ease;
}
.nav-links a:hover {
  color: var(--ink);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  cursor: pointer;
  color: var(--ink);
  transition: background 160ms ease, border-color 160ms ease;
}
.theme-toggle:hover {
  border-color: var(--green-strong);
}
.theme-toggle-track {
  position: relative;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--ink);
  box-shadow: inset -5px -5px 0 0 var(--surface);
  transition: box-shadow 240ms ease, background 240ms ease, transform 240ms ease;
}
:root[data-theme="dark"] .theme-toggle-track,
:root:not([data-theme="light"]) .theme-toggle-track {
  background: var(--green);
  box-shadow: inset 0 0 0 0 var(--surface);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle-track {
    background: var(--green);
    box-shadow: inset 0 0 0 0 var(--surface);
  }
}

.nav-cta, .button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  border-radius: 999px;
  font-weight: 700;
  white-space: nowrap;
  transition: transform 160ms ease, box-shadow 200ms ease, background 200ms ease;
}

.nav-cta {
  padding: 0 18px;
  color: oklch(98% 0.01 78);
  background: var(--ink);
}
:root[data-theme="dark"] .nav-cta,
:root:not([data-theme="light"]) .nav-cta {
  color: oklch(15% 0.01 180);
  background: var(--green);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .nav-cta {
    color: oklch(15% 0.01 180);
    background: var(--green);
  }
}
.nav-cta:hover, .button:hover {
  transform: translateY(-1px);
}

/* ---- 分区容器 ---- */
.section-band {
  width: var(--band);
  margin-left: auto;
  margin-right: auto;
}

.moment,
.product,
.moat,
.team,
.category,
.evidence,
.hw-section,
.why-now,
.final-cta {
  width: min(calc(100% - 32px), var(--max));
  margin: 0 auto;
  padding: clamp(76px, 10vw, 136px) 0;
}
.category,
.evidence,
.hw-section,
.why-now,
.final-cta {
  width: var(--band);
}

.eyebrow,
.section-kicker {
  margin: 0 0 20px;
  color: var(--green-strong);
  font-size: 13px;
  font-weight: 780;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  max-width: 16ch;
  margin-bottom: 26px;
  font-size: clamp(42px, 5.6vw, 82px);
  line-height: 1.02;
  letter-spacing: -0.01em;
  font-weight: 760;
}
h1 em {
  position: relative;
}

h2 {
  margin-bottom: 20px;
  font-size: clamp(32px, 4.6vw, 62px);
  line-height: 1.04;
  letter-spacing: -0.01em;
  font-weight: 750;
}

h3 {
  margin-bottom: 10px;
  font-size: 21px;
  font-weight: 720;
}

/* ============================================================
   Hero
   ============================================================ */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(500px, 1.1fr);
  gap: clamp(28px, 5vw, 72px);
  min-height: calc(100vh - 90px);
  padding: clamp(56px, 7vw, 104px) 0 clamp(48px, 7vw, 88px);
  align-items: center;
}

.hero-copy,
.hero-stage {
  animation: rise-in 760ms cubic-bezier(0.16, 1, 0.3, 1) both;
}
.hero-stage {
  animation-delay: 90ms;
}

.hero-lede {
  max-width: 30em;
  color: var(--ink-2);
  font-size: clamp(17px, 1.6vw, 21px);
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  min-width: 150px;
  padding: 0 24px;
  border: 1px solid var(--ink);
}
.button.primary {
  color: oklch(98% 0.01 78);
  background: var(--ink);
}
:root[data-theme="dark"] .button.primary,
:root:not([data-theme="light"]) .button.primary {
  color: oklch(15% 0.01 180);
  background: var(--green);
  border-color: var(--green);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .button.primary {
    color: oklch(15% 0.01 180);
    background: var(--green);
    border-color: var(--green);
  }
}
.button.secondary {
  color: var(--ink);
  background: transparent;
}
.button.primary:hover {
  box-shadow: var(--shadow-soft);
}

.hero-stage {
  position: relative;
  /* 与产品图同比（4:3），使 cover 几乎不裁切——保证器物完整可见 */
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: 38px;
  background: var(--hero-stage);
  box-shadow: var(--shadow);
}

.hint-card {
  position: absolute;
  z-index: 5;
  width: 224px;
  padding: 17px;
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  color: var(--ink);
  background: var(--glass-strong);
  box-shadow: 0 22px 50px oklch(20% 0.012 170 / 0.14);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}
.hint-card span,
.console-cards span {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 760;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.hint-card b {
  display: block;
  font-size: 15px;
  line-height: 1.36;
}
.hint-card i {
  display: block;
  width: 60px;
  height: 5px;
  margin-top: 15px;
  border-radius: 999px;
  background: var(--green-strong);
}
/* 产品居中，提示卡贴左上 / 右下的空白角，不压器物 */
.hint-a { left: 22px; top: 22px; }
.hint-b { right: 22px; bottom: 46px; }

.stage-caption {
  position: absolute;
  z-index: 6;
  left: 0;
  right: 0;
  bottom: 16px;
  margin: 0;
  text-align: center;
  /* 始终压在浅底产品图上，故固定深色，不随主题反转 */
  color: oklch(38% 0.012 180);
  font-size: 12px;
  letter-spacing: 0.02em;
}

/* 产品概念图铺满 hero 舞台，提示卡浮在其上 */
.hero-photo {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 48%;
}
:root[data-theme="dark"] .hero-photo {
  filter: brightness(0.88) saturate(0.96);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .hero-photo {
    filter: brightness(0.88) saturate(0.96);
  }
}

.wave {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 3px;
  height: 60px;
  margin-top: 16px;
}
.wave i {
  flex: 0 0 3px;
  width: 3px;
  height: 14px;
  border-radius: 999px;
  background: var(--green);
  opacity: 0.92;
}
.wave i:nth-child(2n) { height: 34px; }
.wave i:nth-child(3n) { height: 22px; }
.wave i:nth-child(4n) { height: 48px; }
.wave i:nth-child(5n) { height: 12px; }

.wave.long {
  height: 78px;
  margin: 16px 0 8px;
  gap: 6px;
}
.wave.long i {
  flex: 0 0 4px;
  width: 4px;
  background: var(--green-strong);
}

/* ============================================================
   痛点 The 40 Minutes
   ============================================================ */
.moment h2 {
  max-width: 20ch;
}
.moment-lede {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  max-width: 940px;
  margin-top: 8px;
  color: var(--ink-2);
  font-size: clamp(17px, 1.8vw, 21px);
  line-height: 1.6;
}
.moment-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 56px;
}
.moment-grid article {
  padding: 28px 26px 30px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--surface);
  transition: border-color 200ms ease, transform 200ms ease;
}
.moment-grid article:hover {
  border-color: var(--green-strong);
  transform: translateY(-2px);
}
.moment-grid .tag {
  display: inline-block;
  margin-bottom: 18px;
  color: var(--green-strong);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.08em;
}
.moment-grid p {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
}

/* ============================================================
   类别 The Category —— 象限图
   ============================================================ */
.category {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(380px, 0.95fr);
  gap: clamp(32px, 5vw, 72px);
  align-items: center;
}
.category-line {
  color: var(--ink);
  font-size: clamp(18px, 2vw, 24px);
  font-weight: 640;
  line-height: 1.45;
  margin-bottom: 16px;
}
.category-body {
  color: var(--ink-2);
  font-size: 18px;
  line-height: 1.6;
  max-width: 34em;
}

.quadrant {
  margin: 0;
}
.quadrant-plot {
  position: relative;
  aspect-ratio: 1 / 0.82;
  padding: 22px 22px 30px 44px;
  border: 1px solid var(--line);
  border-radius: 26px;
  background: var(--surface);
  box-shadow: var(--shadow-soft);
}
.axis-y,
.axis-x {
  position: absolute;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.axis-y {
  left: 14px;
  top: 50%;
  transform: rotate(-90deg) translateX(50%);
  transform-origin: left center;
  white-space: nowrap;
}
.axis-x {
  left: 50%;
  bottom: 8px;
  transform: translateX(-50%);
}
.q-line {
  position: absolute;
  background: var(--line);
}
.q-vert {
  left: 50%;
  top: 22px;
  bottom: 30px;
  width: 1px;
}
.q-horz {
  left: 44px;
  right: 22px;
  top: 50%;
  height: 1px;
}
.q-item {
  position: absolute;
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 46%;
  padding: 14px 15px;
  border-radius: 14px;
  text-align: left;
}
.q-item b {
  font-size: 15px;
  font-weight: 720;
}
.q-item small {
  color: var(--muted);
  font-size: 12.5px;
}
.q-typing {
  right: 20px;
  bottom: 34px;
  border: 1px dashed var(--line);
  background: var(--surface-2);
  color: var(--ink-2);
}
.q-moment {
  left: 40px;
  top: 20px;
  border: 1px solid var(--green-strong);
  background: var(--green-soft);
  color: var(--green-ink);
  box-shadow: 0 16px 34px oklch(72% 0.14 171 / 0.24);
}
.q-moment b { color: var(--ink); }
:root[data-theme="dark"] .q-moment b,
:root:not([data-theme="light"]) .q-moment b { color: var(--green-ink); }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .q-moment b { color: var(--green-ink); }
}
.q-moment em {
  margin-top: 4px;
  align-self: flex-start;
  padding: 3px 9px;
  border-radius: 999px;
  background: var(--green-strong);
  color: oklch(99% 0.01 180);
  font-size: 11px;
  font-weight: 780;
  letter-spacing: 0.05em;
}
.quadrant figcaption {
  margin-top: 16px;
  color: var(--muted);
  font-size: 13.5px;
  text-align: center;
}

/* ============================================================
   产品 AI 军师
   ============================================================ */
.section-heading {
  max-width: 780px;
  margin-bottom: 48px;
}
.section-sub {
  margin-top: 4px;
  color: var(--ink-2);
  font-size: clamp(16px, 1.6vw, 19px);
  line-height: 1.62;
  max-width: 40em;
}

/* 控制台 mock */
.product-console {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr) 268px;
  min-height: 440px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 26px;
  background: var(--surface);
  box-shadow: var(--shadow);
}
.console-sidebar {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 20px 0;
  background: var(--device);
}
.console-sidebar .side-mark {
  width: 30px;
  height: 30px;
  margin-bottom: 6px;
}
.console-sidebar .side-mark svg {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: 8px;
}
.console-sidebar button {
  width: 28px;
  height: 28px;
  border: 0;
  border-radius: 8px;
  background: oklch(100% 0 0 / 0.1);
  cursor: default;
}
.console-sidebar button.active {
  background: var(--green);
}

.console-main {
  padding: 28px 30px;
  min-width: 0;
}
.console-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 14px;
}
.console-top i {
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 8px var(--green);
}
.console-top b {
  color: var(--muted);
  font-weight: 640;
}
.lines {
  display: grid;
  gap: 15px;
  padding: 0;
  margin: 20px 0 0;
  list-style: none;
}
.lines li {
  display: grid;
  grid-template-columns: 50px 60px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  color: var(--ink-2);
  font-size: 14px;
}
.lines time {
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}
.lines span {
  font-weight: 720;
  color: var(--ink);
}
.lines span.you {
  color: var(--green-strong);
}
.lines p {
  margin: 0;
  line-height: 1.45;
}

.console-cards {
  display: grid;
  gap: 14px;
  align-content: center;
  padding: 22px;
  border-left: 1px solid var(--line);
  background: var(--surface-2);
}
.console-cards article {
  padding: 16px 17px;
  border: 1px solid var(--line-soft);
  border-radius: 15px;
  background: var(--surface);
}
.console-cards p {
  margin: 0;
  color: var(--ink-2);
  font-size: 14px;
  line-height: 1.46;
}
.card-hint { border-left: 3px solid var(--green-strong); }
.card-risk { border-left: 3px solid oklch(72% 0.13 55); }
.card-know { border-left: 3px solid var(--silver); }

/* 三支柱 */
.product-pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 24px;
}
.product-pillars article {
  padding: 30px 26px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--surface);
}
.pillar-ic {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  margin-bottom: 20px;
  border-radius: 13px;
  color: var(--green-strong);
  background: var(--green-soft);
}
.pillar-ic svg { width: 24px; height: 24px; }
.product-pillars p {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
}

/* ============================================================
   载体 · 生态拼图（硬件）
   ============================================================ */
.hw-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.hw-grid article {
  padding: 30px 26px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--surface);
}
.hw-tag {
  display: inline-block;
  margin-bottom: 16px;
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--green-soft);
  color: var(--green-ink);
  font-size: 12.5px;
  font-weight: 720;
  letter-spacing: 0.02em;
}
.hw-grid h3 {
  margin-bottom: 10px;
}
.hw-grid p {
  margin: 0;
  color: var(--muted);
  line-height: 1.58;
}

.hw-shot {
  margin: 24px 0 0;
}
.hw-shot img {
  display: block;
  width: 100%;
  height: clamp(320px, 42vw, 560px);
  object-fit: cover;
  object-position: 52% 45%;
  border-radius: 26px;
  box-shadow: var(--shadow-soft);
}
:root[data-theme="dark"] .hw-shot img {
  filter: brightness(0.88) saturate(0.96);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .hw-shot img {
    filter: brightness(0.88) saturate(0.96);
  }
}
.hw-shot figcaption {
  margin-top: 14px;
  color: var(--muted);
  font-size: 13px;
  text-align: center;
}

.hw-endgame {
  display: grid;
  grid-template-columns: minmax(280px, 0.8fr) minmax(0, 1fr);
  gap: clamp(28px, 4vw, 56px);
  align-items: start;
  margin-top: 28px;
  padding: clamp(34px, 4vw, 54px);
  border-radius: 30px;
  background: var(--dark-panel);
  color: var(--dark-panel-text);
}
.hw-endgame .eyebrow { color: var(--green); }
.hw-endgame h3 {
  margin: 0;
  color: oklch(97% 0.01 180);
  font-size: clamp(22px, 2.4vw, 30px);
  line-height: 1.26;
}
.hw-endgame p {
  margin: 0;
  color: oklch(82% 0.012 180);
  font-size: 17px;
  line-height: 1.62;
}
.hw-note {
  display: inline-block;
  margin-top: 16px;
  padding: 5px 12px;
  border: 1px solid oklch(100% 0 0 / 0.18);
  border-radius: 999px;
  color: oklch(72% 0.012 180);
  font-size: 12.5px;
}

/* ============================================================
   证据 工程纵深
   ============================================================ */
.evidence-heading {
  max-width: 900px;
  margin-bottom: 40px;
}
.evidence-quote {
  margin: 0 0 44px;
  padding: clamp(32px, 4vw, 52px);
  border: 1px solid var(--line);
  border-radius: 28px;
  background: var(--surface);
  box-shadow: var(--shadow-soft);
}
.evidence-quote p {
  margin: 0 0 18px;
  font-size: clamp(20px, 2.4vw, 30px);
  line-height: 1.4;
  font-weight: 640;
  letter-spacing: -0.01em;
}
.evidence-quote cite {
  display: block;
  color: var(--muted);
  font-style: normal;
  font-size: 15.5px;
  line-height: 1.55;
  max-width: 60ch;
}
/* ---- SAGA 架构块 ---- */
.saga {
  margin-bottom: 22px;
  padding: clamp(30px, 4vw, 52px);
  border-radius: 30px;
  background: var(--dark-panel);
  color: var(--dark-panel-text);
}
.saga-head {
  max-width: 62ch;
  margin-bottom: 34px;
}
.saga-head .eyebrow { color: var(--green); }
.saga-head h3 {
  margin-bottom: 16px;
  color: oklch(97% 0.01 180);
  font-size: clamp(24px, 2.8vw, 34px);
  line-height: 1.22;
}
.saga-head h3 span {
  display: block;
  margin-top: 8px;
  color: oklch(66% 0.02 180);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.saga-lead {
  margin: 0;
  color: oklch(82% 0.012 180);
  font-size: 17px;
  line-height: 1.66;
}
.saga-lead strong { color: var(--green); font-weight: 700; }

/* ---- SAGA 流水线可视化（一次介入的旅程；9s 主循环） ----
   降级：prefers-reduced-motion 全局杀动画后，基态=静态完整图（提示卡可见、
   流点隐藏、门关闭），信息不丢失。 */
.saga-viz {
  margin: 0 0 34px;
}
.sv-pipe {
  display: flex;
  align-items: stretch;
}
.sv-node {
  flex: 1 1 0;
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  padding: 16px 10px;
  border: 1px solid oklch(100% 0 0 / 0.12);
  border-radius: 16px;
  background: oklch(100% 0 0 / 0.045);
  text-align: center;
}
.sv-node b {
  color: oklch(96% 0.01 180);
  font-size: 14.5px;
  font-weight: 720;
}
.sv-node small {
  color: oklch(66% 0.015 180);
  font-size: 11.5px;
  line-height: 1.35;
}
.sv-tag {
  padding: 2px 9px;
  margin-bottom: 4px;
  border-radius: 999px;
  background: oklch(100% 0 0 / 0.1);
  color: var(--green);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.04em;
}
.sv-wave {
  display: flex;
  align-items: center;
  gap: 3px;
  height: 24px;
  margin-bottom: 5px;
}
.sv-wave i {
  width: 3px;
  height: 9px;
  border-radius: 999px;
  background: var(--green);
  opacity: 0.9;
  animation: sv-eq 1.15s ease-in-out infinite;
}
.sv-wave i:nth-child(2n) { height: 17px; animation-delay: 0.14s; }
.sv-wave i:nth-child(3n) { height: 12px; animation-delay: 0.28s; }
.sv-wave i:nth-child(4n) { height: 20px; animation-delay: 0.42s; }

/* 连接线 + 流点：L1 密 → L3 稀（越走越少，过滤的视觉语义） */
.sv-link {
  position: relative;
  flex: 0 0 32px;
  align-self: center;
  height: 2px;
  background: oklch(100% 0 0 / 0.16);
}
.sv-link .d {
  position: absolute;
  top: 50%;
  left: 0;
  width: 6px;
  height: 6px;
  margin-top: -3px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 8px oklch(76% 0.14 171 / 0.8);
  opacity: 0;
  animation: sv-dot-x var(--dur, 1.8s) linear infinite;
}
.sv-link.l1 .d { --dur: 1.8s; }
.sv-link.l1 .d2 { animation-delay: 0.6s; }
.sv-link.l1 .d3 { animation-delay: 1.2s; }
.sv-link.l2 .d { --dur: 3.2s; }
.sv-link.l2 .d2 { animation-delay: 1.6s; }
.sv-link.l3 .d { --dur: 4.6s; }

/* L3 的门：常闭，主循环 55%–61% 打开一瞬 */
.sv-gate {
  display: flex;
  gap: 3px;
  margin-top: 7px;
}
.sv-gate i {
  width: 3px;
  height: 13px;
  border-radius: 2px;
  background: var(--green);
  opacity: 0.85;
}
.sv-gate i:first-child { animation: sv-gate-l 9s ease-in-out infinite; }
.sv-gate i:last-child { animation: sv-gate-r 9s ease-in-out infinite; }

/* 出门那条线：只在开门窗口过一颗点 */
.sv-link.out { background: oklch(76% 0.14 171 / 0.35); }
.sv-link.out .d { animation: sv-fire-x 9s linear infinite; }

.sv-outs {
  flex: 1.12 1 0;
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 7px;
}
.sv-out {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid oklch(100% 0 0 / 0.1);
  border-radius: 12px;
  background: oklch(100% 0 0 / 0.03);
}
.sv-out b {
  color: oklch(88% 0.01 180);
  font-size: 13px;
  font-weight: 720;
}
.sv-out small {
  color: oklch(62% 0.015 180);
  font-size: 11px;
}
.sv-silent {
  border-color: oklch(100% 0 0 / 0.2);
  background: oklch(100% 0 0 / 0.075);
}
.sv-ticks {
  display: inline-flex;
  gap: 4px;
  margin-left: auto;
}
.sv-ticks i {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: oklch(85% 0.01 180);
  animation: sv-tick 1.6s ease-in-out infinite;
}
.sv-ticks i:nth-child(2) { animation-delay: 0.35s; }
.sv-ticks i:nth-child(3) { animation-delay: 0.7s; }
.sv-fire { border-color: oklch(76% 0.14 171 / 0.45); }
.sv-fire b { color: var(--green); }
.sv-fire { animation: sv-firepill 9s ease-in-out infinite; }

/* 提示卡：与 hero 提示卡同语言（浅卡浮在深底上），开门后弹出 */
.sv-hint {
  width: min(320px, 100%);
  margin: 14px 0 0 auto;
  padding: 13px 15px 12px;
  border-radius: 14px;
  background: oklch(97% 0.007 80);
  color: oklch(20% 0.012 180);
  box-shadow: 0 16px 38px oklch(0% 0 0 / 0.4);
  animation: sv-hintpop 9s cubic-bezier(0.16, 1, 0.3, 1) infinite;
}
.sv-hint span {
  display: block;
  margin-bottom: 4px;
  color: oklch(46% 0.015 180);
  font-size: 10.5px;
  font-weight: 760;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.sv-hint b {
  display: block;
  font-size: 14.5px;
  line-height: 1.35;
}
.sv-hint i {
  display: block;
  width: 52px;
  height: 4px;
  margin-top: 10px;
  border-radius: 999px;
  background: var(--green-strong);
}
.saga-viz figcaption {
  margin-top: 14px;
  color: oklch(60% 0.015 180);
  font-size: 12.5px;
  text-align: center;
}

@keyframes sv-eq {
  0%, 100% { transform: scaleY(0.55); }
  50% { transform: scaleY(1.25); }
}
@keyframes sv-dot-x {
  0% { transform: translateX(-3px); opacity: 0; }
  14% { opacity: 1; }
  86% { opacity: 1; }
  100% { transform: translateX(29px); opacity: 0; }
}
@keyframes sv-dot-y {
  0% { transform: translateY(-3px); opacity: 0; }
  14% { opacity: 1; }
  86% { opacity: 1; }
  100% { transform: translateY(23px); opacity: 0; }
}
@keyframes sv-gate-l {
  0%, 52%, 64%, 100% { transform: translateX(0); }
  55%, 61% { transform: translateX(-4px); }
}
@keyframes sv-gate-r {
  0%, 52%, 64%, 100% { transform: translateX(0); }
  55%, 61% { transform: translateX(4px); }
}
@keyframes sv-fire-x {
  0%, 54% { transform: translateX(-3px); opacity: 0; }
  56% { opacity: 1; }
  61% { transform: translateX(29px); opacity: 1; }
  63%, 100% { transform: translateX(29px); opacity: 0; }
}
@keyframes sv-fire-y {
  0%, 54% { transform: translateY(-3px); opacity: 0; }
  56% { opacity: 1; }
  61% { transform: translateY(23px); opacity: 1; }
  63%, 100% { transform: translateY(23px); opacity: 0; }
}
@keyframes sv-tick {
  0%, 100% { opacity: 0.15; }
  40% { opacity: 0.9; }
}
@keyframes sv-firepill {
  0%, 53%, 68%, 100% { box-shadow: 0 0 0 0 transparent; }
  58%, 62% { box-shadow: 0 0 0 1px oklch(76% 0.14 171 / 0.7), 0 0 24px oklch(76% 0.14 171 / 0.4); }
}
@keyframes sv-hintpop {
  0%, 57% { opacity: 0; transform: translateY(10px) scale(0.97); }
  62%, 88% { opacity: 1; transform: translateY(0) scale(1); }
  94%, 100% { opacity: 0; transform: translateY(0) scale(1); }
}

/* 窄屏：流水线改纵向，流点换 Y 轴关键帧 */
@media (max-width: 940px) {
  .sv-pipe {
    flex-direction: column;
    align-items: stretch;
  }
  .sv-link {
    flex-basis: 26px;
    align-self: center;
    width: 2px;
    height: 26px;
  }
  .sv-link .d {
    top: 0;
    left: 50%;
    margin: 0 0 0 -3px;
    animation-name: sv-dot-y;
  }
  .sv-link.out .d { animation-name: sv-fire-y; }
  .sv-outs { flex: none; }
  .sv-hint { margin-left: auto; margin-right: auto; }
}

.saga-layers {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  padding: 0;
  margin: 0;
  list-style: none;
  counter-reset: none;
}
.saga-layers li {
  position: relative;
  padding: 26px 24px;
  border: 1px solid oklch(100% 0 0 / 0.1);
  border-radius: 20px;
  background: oklch(100% 0 0 / 0.04);
}
.saga-n {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 34px;
  height: 26px;
  margin-bottom: 16px;
  padding: 0 10px;
  border-radius: 999px;
  background: var(--green);
  color: oklch(18% 0.02 180);
  font-size: 12.5px;
  font-weight: 800;
  letter-spacing: 0.04em;
}
.saga-layers h4 {
  margin: 0 0 2px;
  color: oklch(97% 0.01 180);
  font-size: 19px;
  font-weight: 720;
}
.saga-sub {
  margin: 0 0 12px;
  color: var(--green);
  font-size: 12.5px;
  font-weight: 640;
  letter-spacing: 0.03em;
}
.saga-layers p:not(.saga-sub) {
  margin: 0;
  color: oklch(78% 0.012 180);
  font-size: 14.5px;
  line-height: 1.6;
}
.saga-foot {
  max-width: 74ch;
  margin: 26px 0 0;
  color: oklch(70% 0.012 180);
  font-size: 14.5px;
  line-height: 1.6;
}

.evidence-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.evidence-grid article {
  padding: 28px 26px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--surface);
}
.evidence-grid h3 {
  color: var(--green-strong);
}
.evidence-grid p {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
}

.evidence-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin: 40px 0 0;
}
.evidence-stats div {
  padding: 26px 22px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--surface-2);
  text-align: left;
}
.evidence-stats dt {
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 780;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.evidence-stats dd {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 14px;
}

/* ============================================================
   壁垒 双环 / 对话资产
   ============================================================ */
.moat {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(360px, 1.08fr);
  gap: clamp(36px, 5vw, 72px);
  align-items: center;
}
.moat-copy p {
  color: var(--ink-2);
  font-size: 18px;
  line-height: 1.62;
  max-width: 36em;
}
.moat-copy p + p {
  margin-top: 16px;
}

.moat-rings {
  margin: 0;
}
.rings {
  position: relative;
  aspect-ratio: 1;
  max-width: 480px;
  margin: 0 auto;
  border-radius: 34px;
  background: var(--dark-panel);
  overflow: hidden;
}
.ring-outer,
.ring-inner {
  position: absolute;
  left: 50%;
  top: 50%;
  border-radius: 50%;
  transform: translate(-50%, -50%);
}
.ring-outer {
  width: 78%;
  aspect-ratio: 1;
  border: 1px dashed oklch(80% 0.1 170 / 0.35);
}
.ring-inner {
  width: 44%;
  aspect-ratio: 1;
  border: 1px solid oklch(80% 0.12 170 / 0.5);
  background: radial-gradient(circle at 50% 42%, oklch(30% 0.04 175 / 0.6), transparent 70%);
  display: grid;
  place-items: center;
}
.ring-label {
  position: absolute;
  padding: 6px 13px;
  border: 1px solid oklch(100% 0 0 / 0.16);
  border-radius: 999px;
  background: oklch(20% 0.012 185 / 0.9);
  color: oklch(94% 0.01 180);
  font-size: 13px;
  font-weight: 640;
  white-space: nowrap;
  transform: translate(-50%, -50%);
}
.rl-read   { left: 50%; top: 0; }
.rl-prep   { left: 100%; top: 32%; }
.rl-live   { left: 82%; top: 92%; }
.rl-review { left: 18%; top: 92%; }
.rl-return { left: 0; top: 32%; }

.ring-tag {
  position: absolute;
  font-size: 12px;
  font-weight: 760;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.tag-outer {
  left: 50%;
  top: 15%;
  transform: translateX(-50%);
  color: oklch(78% 0.02 180);
}
.tag-inner {
  left: 50%;
  bottom: 14px;
  transform: translateX(-50%);
  color: var(--green);
  z-index: 3;
}
/* 数据环圆心=确认版图标；深底上加一圈微光把黑色底板托出来 */
.core-mark {
  width: 38%;
  aspect-ratio: 1;
  border-radius: 22%;
  box-shadow: 0 0 0 1px oklch(100% 0 0 / 0.14), 0 18px 40px oklch(0% 0 0 / 0.55);
}
.core-mark img {
  display: block;
  width: 100%;
  height: 100%;
}
.moat-rings figcaption {
  margin-top: 18px;
  color: var(--muted);
  font-size: 13.5px;
  text-align: center;
}

/* ============================================================
   Why Now
   ============================================================ */
.why-now h2 {
  max-width: 18ch;
}
.why-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
  gap: clamp(32px, 5vw, 64px);
  align-items: start;
  margin-top: 20px;
}
.why-main p {
  color: var(--ink-2);
  font-size: clamp(17px, 1.8vw, 21px);
  line-height: 1.62;
}
.why-main p + p {
  margin-top: 18px;
}
.why-points {
  display: grid;
  gap: 14px;
  padding: 0;
  margin: 0;
  list-style: none;
}
.why-points li {
  display: grid;
  gap: 4px;
  padding: 20px 22px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--green-strong);
  border-radius: 16px;
  background: var(--surface);
}
.why-points b {
  font-size: 16px;
  font-weight: 740;
}
.why-points span {
  color: var(--muted);
  font-size: 14px;
}

/* ============================================================
   团队（占位）
   ============================================================ */
.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.team-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 36px 26px;
  border: 1px dashed var(--line);
  border-radius: 22px;
  background: var(--surface);
  text-align: center;
}
.team-card.is-placeholder {
  opacity: 0.9;
}
.team-avatar {
  width: 76px;
  height: 76px;
  margin-bottom: 12px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 50% 38%, var(--green-soft), transparent 60%),
    var(--surface-2);
  border: 1px solid var(--line);
}
.team-card b {
  font-size: 17px;
  font-weight: 720;
}
.team-card span {
  color: var(--muted);
  font-size: 13.5px;
}

/* ============================================================
   收口 + 联系
   ============================================================ */
.final-cta {
  text-align: center;
  padding-bottom: clamp(96px, 12vw, 150px);
}
.final-line {
  max-width: 22ch;
  margin: 0 auto 34px;
  font-size: clamp(28px, 3.8vw, 52px);
}
.final-sign {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* 页脚 */
.site-footer {
  border-top: 1px solid var(--line);
  background: var(--surface);
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  width: var(--band);
  margin: 0 auto;
  padding: 28px 0;
}
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 760;
  letter-spacing: 0.14em;
  font-size: 15px;
}
.footer-tag {
  color: var(--muted);
  font-size: 14px;
}

/* ============================================================
   动效 / 揭示
   ============================================================ */
[data-visible="false"] {
  opacity: 0;
  transform: translateY(26px);
}
[data-visible="true"] {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 680ms cubic-bezier(0.16, 1, 0.3, 1),
    transform 680ms cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes rise-in {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
  [data-visible="false"] { opacity: 1; transform: none; }
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1040px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: unset;
    gap: 40px;
  }
  .hero-stage {
    order: 2;
  }
  .category,
  .moat {
    grid-template-columns: 1fr;
  }
  .product-console {
    grid-template-columns: 60px minmax(0, 1fr);
  }
  .console-cards {
    grid-column: 1 / -1;
    grid-template-columns: repeat(3, 1fr);
    border-left: 0;
    border-top: 1px solid var(--line);
  }
  .why-grid {
    grid-template-columns: 1fr;
  }
  .hw-endgame {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}

@media (max-width: 820px) {
  .nav-links { display: none; }
  .moment-lede,
  .moment-grid,
  .product-pillars,
  .evidence-grid,
  .saga-layers,
  .hw-grid {
    grid-template-columns: 1fr;
  }
  .evidence-stats {
    grid-template-columns: repeat(2, 1fr);
  }
  .team-grid {
    grid-template-columns: 1fr;
  }
  .console-cards {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .site-header {
    width: calc(100% - 20px);
    gap: 10px;
    padding: 8px 10px 8px 12px;
  }
  .wordmark-img { width: 104px; }
  .nav-cta { padding: 0 14px; font-size: 14px; }
  .section-band,
  .moment, .product, .moat, .team,
  .category, .evidence, .hw-section, .why-now, .final-cta {
    width: calc(100% - 20px);
  }
  h1 {
    font-size: clamp(34px, 9.5vw, 46px);
  }
  h2 {
    font-size: clamp(28px, 8vw, 40px);
  }
  .br-wide { display: none; }
  .hero-stage {
    border-radius: 28px;
  }
  /* 手机上舞台只有 ~280px 高，提示卡必然压住器物；产品图优先，卡片隐藏
     （同样的提示内容在「产品」一节完整呈现） */
  .hint-card { display: none; }
  .hint-card b { font-size: 14px; }
  .wave { height: 48px; }
  .evidence-stats {
    grid-template-columns: 1fr;
  }
  .evidence-stats div { text-align: center; }
  .product-console {
    display: block;
  }
  .console-sidebar {
    flex-direction: row;
    justify-content: flex-start;
    padding: 12px 16px;
  }
  .console-sidebar .side-mark { margin-bottom: 0; }
  .lines li {
    grid-template-columns: 46px minmax(0, 1fr);
  }
  .lines span { display: none; }
  .rings { max-width: 340px; }
  .ring-label { font-size: 11.5px; padding: 5px 10px; }
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}