:root {
  --bg: #f6f7f4;
  --paper: #ffffff;
  --ink: #171717;
  --ink-soft: #2a2f2d;
  --muted: #555f5c;
  --subtle: #eef1ed;
  --line: #d9ded8;
  --strong-line: #abb5ae;
  --teal: #0f766e;
  --teal-soft: #d1efe9;
  --teal-dark: #104e48;
  --teal-glow: rgba(15, 118, 110, 0.32);
  --amber: #b45309;
  --amber-soft: #fde9c8;
  --red: #b91c1c;
  --charcoal: #181d1c;
  --charcoal-2: #232927;
  --code: #111614;
  --white: #ffffff;
  --shadow-sm: 0 4px 14px rgba(19, 28, 24, 0.06);
  --shadow-md: 0 14px 38px rgba(19, 28, 24, 0.10);
  --shadow-lg: 0 22px 70px rgba(19, 28, 24, 0.12);
  --shadow-glow: 0 30px 80px rgba(15, 118, 110, 0.18);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --ease-snappy: cubic-bezier(0.34, 1.56, 0.64, 1);
  --t-fast: 200ms;
  --t-base: 380ms;
  --t-slow: 700ms;
  --noise: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0  0 0 0 0 0  0 0 0 0 0  0 0 0 0.06 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: var(--noise);
  opacity: 0.55;
  mix-blend-mode: multiply;
  z-index: 1;
}

main,
.site-header,
.site-footer {
  position: relative;
  z-index: 2;
}

a {
  color: inherit;
}

::selection {
  background: var(--teal);
  color: var(--white);
}

/* ================= 阅读进度条 ================= */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  z-index: 60;
  pointer-events: none;
}

.reading-progress::before {
  content: "";
  display: block;
  height: 100%;
  width: var(--progress, 0%);
  background: linear-gradient(90deg, var(--teal), var(--amber));
  transition: width 80ms linear;
  box-shadow: 0 0 12px var(--teal-glow);
}

/* ================= 自定义光标 ================= */
.cursor-dot,
.cursor-ring {
  position: fixed;
  top: 0;
  left: 0;
  pointer-events: none;
  z-index: 9999;
  border-radius: 999px;
  transform: translate3d(-100px, -100px, 0);
  mix-blend-mode: difference;
  will-change: transform;
}

.cursor-dot {
  width: 6px;
  height: 6px;
  background: var(--white);
  transition: width 180ms var(--ease-out), height 180ms var(--ease-out), opacity 200ms ease;
}

.cursor-ring {
  width: 36px;
  height: 36px;
  border: 1px solid rgba(255, 255, 255, 0.55);
  transition: width 220ms var(--ease-out), height 220ms var(--ease-out),
    border-color 220ms var(--ease-out), opacity 200ms ease;
}

body.cursor-hover .cursor-ring {
  width: 64px;
  height: 64px;
  border-color: rgba(255, 255, 255, 0.9);
}

body.cursor-hover .cursor-dot {
  width: 0;
  height: 0;
  opacity: 0;
}

@media (hover: none), (pointer: coarse) {
  .cursor-dot,
  .cursor-ring {
    display: none;
  }
}

/* ================= 顶栏 ================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 24px;
  min-height: 72px;
  padding: 0 32px;
  border-bottom: 1px solid rgba(217, 222, 216, 0.7);
  background: rgba(246, 247, 244, 0.78);
  backdrop-filter: saturate(140%) blur(18px);
  -webkit-backdrop-filter: saturate(140%) blur(18px);
  transition: background 280ms ease, border-color 280ms ease;
}

.site-header.is-scrolled {
  background: rgba(246, 247, 244, 0.92);
  border-color: var(--line);
}

.brand,
.nav-links,
.hero-actions,
.proof-row,
.window-bar,
.scenario-footer,
.site-footer {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-weight: 700;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: var(--ink);
  color: var(--white);
  font-size: 13px;
  letter-spacing: 0;
  position: relative;
  overflow: hidden;
}

.brand-mark::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 30%, rgba(255, 255, 255, 0.25) 50%, transparent 70%);
  transform: translateX(-100%);
  transition: transform 600ms var(--ease-out);
}

.brand:hover .brand-mark::after {
  transform: translateX(100%);
}

.nav-links {
  justify-content: center;
  gap: 24px;
  font-size: 14px;
  color: var(--muted);
}

.nav-links a {
  position: relative;
  text-decoration: none;
  padding: 6px 2px;
  transition: color var(--t-fast) ease;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 320ms var(--ease-out);
}

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

.nav-links a:hover::after {
  transform: scaleX(1);
}

.header-cta {
  justify-self: end;
  min-width: 112px;
  padding: 10px 16px;
  border-radius: 8px;
  background: var(--teal);
  color: var(--white);
  text-align: center;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: transform var(--t-fast) var(--ease-out), box-shadow var(--t-fast) ease, background 200ms ease;
}

.header-cta:hover {
  transform: translateY(-1px);
  background: var(--teal-dark);
  box-shadow: 0 10px 26px var(--teal-glow);
}

/* ================= 通用 section ================= */
.section-band {
  position: relative;
  padding: 96px max(32px, calc((100vw - 1180px) / 2));
  border-bottom: 1px solid var(--line);
}

.muted {
  background: var(--subtle);
}

.dark {
  background: var(--charcoal);
  color: var(--white);
}

/* ================= Hero ================= */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(430px, 1.05fr);
  gap: 56px;
  align-items: center;
  min-height: calc(100vh - 72px);
  padding-top: 72px;
  padding-bottom: 72px;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: -20%;
  background:
    radial-gradient(420px circle at var(--mx, 30%) var(--my, 30%), rgba(15, 118, 110, 0.18), transparent 60%),
    radial-gradient(560px circle at calc(100% - var(--mx, 30%)) calc(100% - var(--my, 30%)), rgba(180, 83, 9, 0.10), transparent 60%);
  pointer-events: none;
  transition: background 240ms ease;
  z-index: 0;
}

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

.eyebrow,
.mini-label {
  margin: 0 0 14px;
  color: var(--teal);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.dark .eyebrow {
  color: #7dd3c7;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1,
h2 {
  margin: 0;
  max-width: 920px;
  font-family: ui-serif, "Songti SC", "Source Han Serif SC", Georgia, serif;
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: 0;
}

h1 {
  font-size: clamp(42px, 6vw, 72px);
}

h2 {
  font-size: clamp(30px, 4vw, 48px);
}

h3 {
  margin: 0 0 10px;
  font-size: 20px;
  line-height: 1.25;
}

.hero-lead,
.section-heading p,
.cta-section p {
  max-width: 760px;
  color: var(--muted);
  font-size: 18px;
}

.hero-lead {
  margin: 26px 0 34px;
}

.hero-actions {
  gap: 14px;
  flex-wrap: wrap;
}

/* ================= 按钮（含 Magnetic） ================= */
.button {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 22px;
  border: 1px solid var(--strong-line);
  border-radius: 10px;
  text-decoration: none;
  font-weight: 800;
  letter-spacing: 0.01em;
  overflow: hidden;
  isolation: isolate;
  transition: transform 220ms var(--ease-out), background 220ms ease,
    border-color 220ms ease, color 220ms ease, box-shadow 220ms ease;
}

.button::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(120px circle at var(--bx, 50%) var(--by, 50%), rgba(255, 255, 255, 0.32), transparent 60%);
  opacity: 0;
  transition: opacity 200ms ease;
  z-index: -1;
}

.button:hover::before {
  opacity: 1;
}

.button-primary {
  border-color: var(--teal);
  background: var(--teal);
  color: var(--white);
}

.button-primary:hover {
  background: var(--teal-dark);
  box-shadow: 0 16px 34px var(--teal-glow);
}

.button-secondary {
  background: var(--paper);
  color: var(--ink);
}

.button-secondary:hover {
  border-color: var(--ink);
  box-shadow: var(--shadow-sm);
}

.button-primary::after {
  content: "→";
  display: inline-block;
  margin-left: 10px;
  transform: translateX(0);
  transition: transform 240ms var(--ease-out);
}

.button-primary:hover::after {
  transform: translateX(4px);
}

/* ================= KPI 行 ================= */
.proof-row {
  flex-wrap: wrap;
  gap: 26px;
  margin: 42px 0 0;
}

.proof-row div {
  min-width: 128px;
  padding-left: 16px;
  border-left: 3px solid var(--amber);
}

.proof-row dt {
  font-family: ui-serif, "Songti SC", Georgia, serif;
  font-size: 30px;
  font-weight: 800;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.proof-row dt .counter-unit {
  margin-left: 4px;
  font-size: 18px;
  color: var(--muted);
  font-weight: 600;
}

.proof-row dd {
  margin: 7px 0 0;
  color: var(--muted);
  font-size: 13px;
}

/* ================= Workbench ================= */
.workbench {
  position: relative;
  min-height: 570px;
  perspective: 1400px;
}

.workbench-stage {
  position: relative;
  height: 100%;
  min-height: 570px;
  transform-style: preserve-3d;
  transition: transform 320ms var(--ease-out);
}

.window {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--paper);
  box-shadow: var(--shadow-lg);
  backface-visibility: hidden;
  transition: box-shadow 320ms ease, transform 320ms var(--ease-out);
}

.vault-window {
  width: min(100%, 600px);
  transform: translateZ(0);
}

.terminal-window {
  position: absolute;
  right: 0;
  bottom: 0;
  width: min(88%, 520px);
  background: var(--code);
  color: #d7eee8;
  transform: translateZ(40px);
  box-shadow: var(--shadow-glow), var(--shadow-lg);
}

.window-bar {
  gap: 8px;
  min-height: 42px;
  padding: 0 14px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

.terminal-window .window-bar {
  border-color: #31413c;
  color: #a8bbb4;
}

.window-bar span {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: #d8dfda;
  transition: transform 220ms var(--ease-snappy);
}

.window-bar:hover span:nth-child(1) {
  transform: scale(1.18);
}

.window-bar:hover span:nth-child(2) {
  transform: scale(1.18);
  transition-delay: 60ms;
}

.window-bar:hover span:nth-child(3) {
  transform: scale(1.18);
  transition-delay: 120ms;
}

.window-bar span:nth-child(1) {
  background: var(--red);
}

.window-bar span:nth-child(2) {
  background: var(--amber);
}

.window-bar span:nth-child(3) {
  background: var(--teal);
}

.window-bar strong {
  margin-left: 6px;
}

.vault-grid {
  display: grid;
  grid-template-columns: 190px 1fr;
  min-height: 360px;
}

.vault-tree {
  padding: 24px 18px;
  border-right: 1px solid var(--line);
  background: #f8faf7;
}

.vault-tree p,
.file-tree p {
  margin: 0 0 12px;
  font-family: "SF Mono", "JetBrains Mono", Consolas, monospace;
  font-size: 13px;
  transition: color 200ms ease, transform 200ms ease;
}

.vault-tree p:hover {
  color: var(--teal);
  transform: translateX(2px);
}

.vault-note {
  padding: 30px;
}

.tag {
  display: inline-block;
  margin-bottom: 18px;
  padding: 5px 9px;
  border-radius: 6px;
  background: var(--teal-soft);
  color: var(--teal-dark);
  font-size: 12px;
  font-weight: 800;
}

.vault-note p {
  margin: 14px 0;
  color: var(--muted);
}

pre {
  margin: 0;
  white-space: pre-wrap;
}

code {
  font-family: "SF Mono", "JetBrains Mono", Consolas, monospace;
  letter-spacing: 0;
}

.terminal-window pre {
  padding: 22px 24px 28px;
  font-size: 13px;
  line-height: 1.7;
  min-height: 200px;
}

.terminal-window pre .typed-cursor {
  display: inline-block;
  width: 8px;
  height: 1.05em;
  margin-left: 2px;
  background: #7dd3c7;
  vertical-align: -0.18em;
  animation: blink 1s steps(2) infinite;
}

@keyframes blink {
  50% {
    opacity: 0;
  }
}

/* ================= Section Heading ================= */
.section-heading {
  margin-bottom: 42px;
}

.section-heading p {
  margin: 18px 0 0;
}

/* ================= 卡片网格通用 ================= */
.stack-map,
.quick-grid,
.package-grid,
.boundary-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.stack-map article,
.quick-grid article,
.package-grid article,
.boundary-list article {
  position: relative;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--paper);
  transition: transform 320ms var(--ease-out), box-shadow 320ms ease, border-color 320ms ease;
  transform-style: preserve-3d;
  will-change: transform;
}

.stack-map article::after,
.quick-grid article::after,
.package-grid article::after,
.boundary-list article::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 12px;
  background: radial-gradient(280px circle at var(--mx, 50%) var(--my, 50%), rgba(15, 118, 110, 0.08), transparent 60%);
  opacity: 0;
  transition: opacity 280ms ease;
  pointer-events: none;
}

.stack-map article:hover,
.quick-grid article:hover,
.package-grid article:hover {
  transform: translateY(-4px);
  border-color: var(--strong-line);
  box-shadow: var(--shadow-md);
}

.stack-map article:hover::after,
.quick-grid article:hover::after,
.package-grid article:hover::after,
.boundary-list article:hover::after {
  opacity: 1;
}

.layer-number {
  display: block;
  margin-bottom: 28px;
  color: var(--amber);
  font-weight: 900;
  font-size: 14px;
  letter-spacing: 0.08em;
  transition: transform 320ms var(--ease-snappy), color 320ms ease;
}

.stack-map article:hover .layer-number {
  transform: translateY(-2px);
  color: var(--teal);
}

.stack-map p,
.quick-grid p,
.package-grid p,
.boundary-list p,
.prep-copy p {
  margin: 0;
  color: var(--muted);
}

.quick-grid code {
  display: block;
  margin-top: 20px;
  min-height: 78px;
  padding: 14px;
  border-radius: 8px;
  background: var(--code);
  color: #d7eee8;
  font-size: 12px;
  position: relative;
}

.quick-grid code::before {
  content: "$";
  color: #7dd3c7;
  margin-right: 8px;
  font-weight: 700;
}

/* ================= Scenario Panel ================= */
.scenario-panel {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--paper);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.persona-tabs {
  display: grid;
  gap: 8px;
  align-content: start;
  padding: 18px;
  border-right: 1px solid var(--line);
  background: #f8faf7;
}

.persona-tab {
  position: relative;
  min-height: 44px;
  border: 1px solid transparent;
  border-radius: 8px;
  background: transparent;
  color: var(--muted);
  text-align: left;
  padding: 10px 14px;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
  transition: color 200ms ease, background 200ms ease, border-color 200ms ease, transform 200ms var(--ease-out);
}

.persona-tab::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  bottom: 12px;
  width: 3px;
  background: var(--teal);
  border-radius: 4px;
  transform: scaleY(0);
  transform-origin: center;
  transition: transform 260ms var(--ease-snappy);
}

.persona-tab:hover {
  color: var(--ink);
  transform: translateX(2px);
}

.persona-tab.active {
  border-color: var(--line);
  background: var(--white);
  color: var(--ink);
  box-shadow: var(--shadow-sm);
}

.persona-tab.active::before {
  transform: scaleY(1);
}

.scenario-result {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  padding: 30px;
  position: relative;
}

.scenario-result.is-changing > div {
  opacity: 0;
  transform: translateY(8px);
}

.scenario-result > div {
  transition: opacity 260ms var(--ease-out), transform 260ms var(--ease-out);
}

.scenario-result p {
  margin: 0;
  color: var(--muted);
}

.scenario-result h3 {
  font-size: 28px;
}

.prompt-box {
  position: relative;
  min-height: 156px;
  border-radius: 10px;
  background: var(--code);
  color: #d7eee8;
  overflow: hidden;
}

.prompt-box::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(125, 211, 199, 0.06), transparent 40%);
  pointer-events: none;
}

.prompt-box pre {
  padding: 18px 84px 18px 18px;
  font-size: 13px;
  line-height: 1.65;
}

.icon-button {
  position: absolute;
  top: 12px;
  right: 12px;
  min-width: 60px;
  min-height: 34px;
  border: 1px solid #31413c;
  border-radius: 8px;
  background: #1f2b27;
  color: #d7eee8;
  cursor: pointer;
  font: inherit;
  font-size: 12px;
  font-weight: 700;
  transition: background 200ms ease, color 200ms ease, transform 200ms var(--ease-out);
}

.icon-button:hover {
  background: var(--teal);
  border-color: var(--teal);
  color: var(--white);
  transform: translateY(-1px);
}

.icon-button.is-success {
  background: var(--teal);
  border-color: var(--teal);
  color: var(--white);
}

.scenario-footer {
  grid-column: 1 / -1;
  align-items: stretch;
  gap: 16px;
}

.scenario-footer > div {
  flex: 1;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #f8faf7;
  transition: border-color 220ms ease, background 220ms ease;
}

.scenario-footer > div:hover {
  border-color: var(--strong-line);
  background: var(--white);
}

/* ================= Timeline ================= */
.timeline {
  position: relative;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
  padding: 0;
  margin: 0;
  list-style: none;
  counter-reset: step;
}

.timeline::before {
  content: "";
  position: absolute;
  top: 22px;
  left: 12%;
  right: 12%;
  height: 2px;
  background: var(--line);
  z-index: 0;
}

.timeline::after {
  content: "";
  position: absolute;
  top: 22px;
  left: 12%;
  height: 2px;
  width: calc((100% - 24%) * var(--timeline-progress, 0));
  background: linear-gradient(90deg, var(--teal), var(--amber));
  transition: width 480ms var(--ease-out);
  z-index: 0;
  box-shadow: 0 0 14px var(--teal-glow);
}

.timeline li {
  position: relative;
  min-height: 250px;
  padding: 56px 22px 22px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--paper);
  z-index: 1;
  transition: transform 320ms var(--ease-out), box-shadow 320ms ease, border-color 320ms ease;
}

.timeline li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  border-radius: 999px;
  background: var(--paper);
  border: 2px solid var(--line);
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  transition: background 320ms ease, border-color 320ms ease, color 320ms ease, transform 320ms var(--ease-snappy);
}

.timeline li.is-active {
  transform: translateY(-3px);
  border-color: var(--teal);
  box-shadow: 0 14px 30px var(--teal-glow);
}

.timeline li.is-active::before {
  background: var(--teal);
  border-color: var(--teal);
  color: var(--white);
  transform: translateX(-50%) scale(1.1);
}

.timeline span {
  display: inline-block;
  margin-bottom: 18px;
  color: var(--teal);
  font-weight: 900;
  font-variant-numeric: tabular-nums;
}

/* ================= Packages ================= */
.package-grid ul {
  padding-left: 18px;
  margin: 18px 0 0;
  color: var(--muted);
}

.package-grid li {
  margin: 10px 0;
  position: relative;
  list-style: none;
  padding-left: 18px;
}

.package-grid li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--teal);
}

/* ================= Boundary（深色） ================= */
.dark .boundary-list article {
  border-color: #33413c;
  background: var(--charcoal-2);
  transition: transform 320ms var(--ease-out), border-color 320ms ease, box-shadow 320ms ease;
}

.dark .boundary-list article:hover {
  border-color: #7dd3c7;
  box-shadow: 0 18px 40px rgba(125, 211, 199, 0.12);
  transform: translateY(-3px);
}

.dark .boundary-list p {
  color: #cbd5d0;
}

/* ================= Prep ================= */
.prep-layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.9fr) minmax(0, 1.1fr);
  gap: 28px;
  align-items: stretch;
}

.file-tree {
  padding: 26px;
  border-radius: 12px;
  background: var(--code);
  color: #d7eee8;
  position: relative;
  overflow: hidden;
}

.file-tree::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(125, 211, 199, 0.05), transparent 40%);
  pointer-events: none;
}

.file-tree p {
  position: relative;
  transition: color 200ms ease, transform 200ms var(--ease-out);
}

.file-tree p:hover {
  color: #7dd3c7;
  transform: translateX(3px);
}

.prep-copy {
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--paper);
}

.prep-copy .button {
  margin-top: 24px;
}

/* ================= CTA ================= */
.cta-section {
  background: var(--teal-dark);
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: "";
  position: absolute;
  inset: -40%;
  background:
    radial-gradient(500px circle at 30% 30%, rgba(125, 211, 199, 0.18), transparent 60%),
    radial-gradient(420px circle at 80% 80%, rgba(180, 83, 9, 0.16), transparent 60%);
  pointer-events: none;
  animation: floatLights 14s ease-in-out infinite alternate;
}

.cta-section > * {
  position: relative;
  z-index: 1;
}

@keyframes floatLights {
  from {
    transform: translate3d(0, 0, 0) scale(1);
  }
  to {
    transform: translate3d(20px, -20px, 0) scale(1.05);
  }
}

.cta-section .eyebrow {
  color: #9ee6dd;
}

.cta-section p {
  color: #d8f2ed;
}

.cta-section .button-secondary {
  background: transparent;
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.4);
}

.cta-section .button-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.7);
}

/* ================= Footer ================= */
.site-footer {
  justify-content: space-between;
  gap: 20px;
  padding: 24px 32px;
  background: var(--charcoal);
  color: #a8bbb4;
  font-size: 13px;
}

.site-footer p {
  margin: 0;
}

/* ================= 滚动揭示 ================= */
[data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 720ms var(--ease-out), transform 720ms var(--ease-out);
  transition-delay: var(--reveal-delay, 0ms);
  will-change: opacity, transform;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ================= 键盘提示 ================= */
.keyboard-hint {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 40;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: var(--muted);
  font-size: 12px;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  transition: transform 220ms var(--ease-out), color 220ms ease, border-color 220ms ease;
}

.keyboard-hint:hover {
  transform: translateY(-2px);
  color: var(--ink);
  border-color: var(--strong-line);
}

.keyboard-hint kbd {
  display: inline-grid;
  place-items: center;
  min-width: 22px;
  height: 22px;
  padding: 0 6px;
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  border-radius: 6px;
  background: var(--white);
  color: var(--ink);
  font: 11px/1 "SF Mono", "JetBrains Mono", Consolas, monospace;
  font-weight: 700;
}

/* ================= Modal Overlay ================= */
.overlay {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding: 14vh 24px 24px;
  background: rgba(15, 22, 20, 0.55);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  opacity: 0;
  transition: opacity 220ms ease;
}

.overlay.is-open {
  display: flex;
  opacity: 1;
}

/* ================= Command Palette ================= */
.palette {
  width: min(620px, 100%);
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--paper);
  box-shadow: 0 30px 80px rgba(19, 28, 24, 0.32);
  overflow: hidden;
  transform: translateY(-12px);
  transition: transform 280ms var(--ease-out);
}

.overlay.is-open .palette {
  transform: translateY(0);
}

.palette-input {
  width: 100%;
  border: 0;
  border-bottom: 1px solid var(--line);
  padding: 18px 22px;
  font: inherit;
  font-size: 16px;
  background: transparent;
  color: var(--ink);
  outline: none;
}

.palette-input::placeholder {
  color: var(--muted);
}

.palette-list {
  max-height: 50vh;
  overflow-y: auto;
  padding: 8px;
  margin: 0;
  list-style: none;
}

.palette-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 14px;
  border-radius: 8px;
  color: var(--ink-soft);
  cursor: pointer;
  transition: background 160ms ease, color 160ms ease;
}

.palette-item .palette-meta {
  font-size: 12px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.palette-item.is-active,
.palette-item:hover {
  background: var(--subtle);
  color: var(--ink);
}

.palette-empty {
  padding: 24px;
  text-align: center;
  color: var(--muted);
  font-size: 14px;
}

.palette-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 18px;
  border-top: 1px solid var(--line);
  background: #fafbf8;
  color: var(--muted);
  font-size: 12px;
}

.palette-foot kbd {
  display: inline-grid;
  place-items: center;
  min-width: 20px;
  height: 20px;
  padding: 0 5px;
  margin: 0 2px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: var(--white);
  color: var(--ink);
  font: 11px/1 "SF Mono", "JetBrains Mono", Consolas, monospace;
  font-weight: 700;
}

/* ================= PPT 模式 ================= */
body.is-presenting {
  overflow: hidden;
}

body.is-presenting .site-header,
body.is-presenting .site-footer,
body.is-presenting .keyboard-hint {
  display: none;
}

body.is-presenting main {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  z-index: 50;
}

body.is-presenting .section-band {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 72px 8vw;
  border-bottom: 0;
  opacity: 0;
  transform: translateY(20px) scale(0.99);
  transition: opacity 420ms var(--ease-out), transform 420ms var(--ease-out);
  pointer-events: none;
  overflow: auto;
}

body.is-presenting .section-band.is-current {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

body.is-presenting [data-reveal] {
  opacity: 1;
  transform: none;
  transition: none;
}

body.is-presenting .section-band > * {
  width: min(1180px, 100%);
  margin-left: auto;
  margin-right: auto;
}

body.is-presenting .hero {
  min-height: auto;
  padding-top: 0;
  padding-bottom: 0;
}

.present-controls {
  position: fixed;
  bottom: 22px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 90;
  display: none;
  align-items: center;
  gap: 14px;
  padding: 10px 16px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-md);
  font-size: 13px;
  color: var(--muted);
}

body.is-presenting .present-controls {
  display: flex;
}

.present-controls button {
  width: 32px;
  height: 32px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper);
  color: var(--ink);
  cursor: pointer;
  font: inherit;
  font-size: 13px;
  display: grid;
  place-items: center;
  transition: background 180ms ease, transform 180ms var(--ease-out), border-color 180ms ease;
}

.present-controls button:hover {
  background: var(--ink);
  color: var(--white);
  border-color: var(--ink);
  transform: translateY(-1px);
}

.present-counter {
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  color: var(--ink);
  min-width: 56px;
  text-align: center;
}

.present-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--line);
  display: none;
  z-index: 90;
}

body.is-presenting .present-progress {
  display: block;
}

.present-progress::before {
  content: "";
  display: block;
  height: 100%;
  width: var(--present-progress, 0%);
  background: linear-gradient(90deg, var(--teal), var(--amber));
  transition: width 280ms var(--ease-out);
  box-shadow: 0 0 12px var(--teal-glow);
}

/* ================= Reduced Motion ================= */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .cursor-dot,
  .cursor-ring {
    display: none;
  }

  .hero::before,
  .cta-section::before {
    animation: none;
  }
}

/* ================= 响应式 ================= */
@media (max-width: 980px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .nav-links {
    display: none;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .workbench {
    min-height: 500px;
  }

  .stack-map,
  .quick-grid,
  .package-grid,
  .timeline,
  .boundary-list {
    grid-template-columns: 1fr 1fr;
  }

  .timeline::before,
  .timeline::after {
    display: none;
  }

  .scenario-panel,
  .prep-layout {
    grid-template-columns: 1fr;
  }

  .persona-tabs {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .persona-tab::before {
    display: none;
  }

  .keyboard-hint {
    display: none;
  }
}

@media (max-width: 640px) {
  .site-header {
    min-height: 64px;
    padding: 0 16px;
  }

  .brand span:last-child {
    display: none;
  }

  .section-band {
    padding: 64px 18px;
  }

  h1 {
    font-size: 38px;
  }

  h2 {
    font-size: 30px;
  }

  .hero-lead,
  .section-heading p,
  .cta-section p {
    font-size: 16px;
  }

  .button {
    width: 100%;
  }

  .proof-row {
    display: grid;
    grid-template-columns: 1fr;
  }

  .workbench {
    min-height: auto;
    perspective: none;
  }

  .workbench-stage {
    transform: none !important;
  }

  .terminal-window {
    position: static;
    width: 100%;
    margin-top: 16px;
    transform: none;
  }

  .vault-grid,
  .scenario-result,
  .stack-map,
  .quick-grid,
  .package-grid,
  .timeline,
  .boundary-list {
    grid-template-columns: 1fr;
  }

  .vault-tree {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .persona-tabs {
    grid-template-columns: 1fr;
  }

  .scenario-footer {
    flex-direction: column;
  }

  .timeline li {
    min-height: auto;
  }

  .site-footer {
    flex-direction: column;
    align-items: flex-start;
    padding: 22px 18px;
  }
}

/* ============================================================
 * 语言切换器 · Packages 两档版式（i18n + 2-tier 重构追加）
 * ============================================================ */

.header-end {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: 12px;
}

.lang-switcher {
  position: relative;
  display: inline-flex;
}

.lang-switcher-trigger {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.6);
  color: var(--ink);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  font-family: inherit;
  transition: border-color 200ms ease, background 200ms ease, transform 160ms var(--ease-out);
}

.lang-switcher-trigger:hover {
  border-color: var(--strong-line);
  background: var(--white);
}

.lang-switcher.is-open .lang-switcher-trigger {
  border-color: var(--ink);
  background: var(--white);
}

.lang-icon {
  display: inline-flex;
  color: var(--muted);
  transition: color 200ms ease;
}

.lang-switcher-trigger:hover .lang-icon,
.lang-switcher.is-open .lang-icon {
  color: var(--teal);
}

.lang-current {
  letter-spacing: 0.04em;
}

.lang-caret {
  font-size: 10px;
  color: var(--muted);
  transition: transform 220ms var(--ease-out);
}

.lang-switcher.is-open .lang-caret {
  transform: rotate(180deg);
}

.lang-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 220px;
  margin: 0;
  padding: 6px;
  list-style: none;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transform: translateY(-6px) scale(0.98);
  pointer-events: none;
  transition: opacity 200ms ease, transform 200ms var(--ease-out);
  z-index: 50;
}

.lang-switcher.is-open .lang-menu {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: all;
}

.lang-menu li {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 10px 12px;
  border-radius: 8px;
  cursor: pointer;
  transition: background 160ms ease;
}

.lang-menu li:hover {
  background: var(--subtle);
}

.lang-menu li.is-active {
  background: var(--teal-soft);
}

.lang-name {
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
}

.lang-menu li.is-active .lang-name {
  color: var(--teal-dark);
}

.lang-region {
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.02em;
}

.lang-menu li.is-active .lang-region {
  color: var(--teal);
}

@media (max-width: 720px) {
  .lang-switcher-trigger {
    padding: 6px 10px;
    font-size: 12px;
  }
  .lang-current {
    display: none;
  }
  .lang-menu {
    min-width: 200px;
  }
}

/* ================= Packages 两档版式 ================= */
.package-grid--two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  align-items: stretch;
}

@media (max-width: 880px) {
  .package-grid--two {
    grid-template-columns: 1fr;
  }
}

.package {
  display: flex;
  flex-direction: column;
  padding: 36px 32px !important;
}

.package-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}

.package-badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--muted);
  background: var(--subtle);
}

.package-badge--accent {
  background: var(--teal);
  color: var(--white);
  border-color: var(--teal);
}

.package-label {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.16em;
  color: var(--amber);
  text-transform: uppercase;
}

.package h3 {
  margin: 0;
  font-size: 30px;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.package-subtitle {
  margin: 8px 0 24px !important;
  font-size: 15px;
  color: var(--muted) !important;
  line-height: 1.5;
}

.package-price {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 18px;
  margin-bottom: 20px;
  background: var(--subtle);
  border-radius: 10px;
  border: 1px solid var(--line);
}

.package-price-value {
  font-size: 22px;
  font-weight: 800;
  color: var(--ink);
  letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums;
}

.package-price-note {
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.02em;
}

.package-desc {
  margin: 0 0 16px !important;
  font-size: 14px;
  line-height: 1.65;
  color: var(--ink-soft) !important;
}

.package ul {
  flex: 1;
  margin: 0 0 24px !important;
}

.package-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  margin-top: auto;
}

.package--custom {
  position: relative;
  border-color: var(--ink) !important;
  background: linear-gradient(180deg, #ffffff, #fafbf8) !important;
  box-shadow: var(--shadow-md);
}

.package--custom::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: 13px;
  padding: 1px;
  background: linear-gradient(150deg, var(--teal), transparent 40%, var(--amber) 100%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.package--custom .package-price {
  background: var(--charcoal);
  border-color: var(--charcoal);
}

.package--custom .package-price-value {
  color: var(--white);
}

.package--custom .package-price-note {
  color: #aab2af;
}

@media (max-width: 720px) {
  .package {
    padding: 28px 24px !important;
  }
  .package h3 {
    font-size: 24px;
  }
  .package-price-value {
    font-size: 18px;
  }
}

/* ============== 「主动情报」爬虫 + AI 摘要演示板块 ============== */
.active-intel-section {
  padding-top: 80px;
  padding-bottom: 80px;
  background: linear-gradient(180deg, rgba(15, 118, 110, 0.02) 0%, transparent 100%);
}

.intel-stage {
  max-width: 1080px;
  margin: 32px auto 0;
}

.intel-sources {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 12px;
  position: relative;
  z-index: 2;
}

.source-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 8px;
  border-radius: 12px;
  background: white;
  border: 1px solid rgba(15, 23, 42, 0.10);
  font-size: 13px;
  font-weight: 500;
  color: rgba(15, 23, 42, 0.78);
  text-align: center;
  letter-spacing: 0.01em;
  box-shadow: 0 2px 6px rgba(15, 23, 42, 0.04);
  transition: transform 220ms ease, box-shadow 220ms ease, border-color 220ms ease;
}

.source-pill:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(15, 118, 110, 0.12);
  border-color: rgba(15, 118, 110, 0.30);
}

.intel-pipe {
  position: relative;
  height: 100px;
  margin-top: -2px;
  z-index: 1;
}

.intel-pipe-line {
  position: absolute;
  top: 0;
  width: 1px;
  height: 60px;
  transform: translateX(-50%);
  background: linear-gradient(180deg,
    transparent 0%,
    rgba(15, 118, 110, 0.6) 30%,
    rgba(15, 118, 110, 0.9) 50%,
    rgba(15, 118, 110, 0.6) 70%,
    transparent 100%);
  background-size: 100% 200%;
  animation: intelPipeFlow 2.4s linear infinite;
  animation-delay: var(--d, 0s);
  opacity: 0.7;
}

@keyframes intelPipeFlow {
  0%   { background-position: 0 -100%; opacity: 0.3; }
  50%  { opacity: 0.95; }
  100% { background-position: 0 200%; opacity: 0.3; }
}

.intel-pipe-hub {
  position: absolute;
  top: 50px;
  left: 50%;
  transform: translateX(-50%);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 22px;
  background: var(--teal, #0f766e);
  color: white;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  box-shadow: 0 8px 24px rgba(15, 118, 110, 0.35);
  white-space: nowrap;
}

.intel-pipe-hub-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #4ade80;
  box-shadow: 0 0 0 0 rgba(74, 222, 128, 0.7);
  animation: intelHubPulse 2s ease-in-out infinite;
}

@keyframes intelHubPulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(74, 222, 128, 0.7); }
  50%      { box-shadow: 0 0 0 8px rgba(74, 222, 128, 0); }
}

.intel-results {
  margin-top: 16px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.intel-card {
  position: relative;
  padding: 22px 22px 18px;
  background: white;
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 16px;
  box-shadow: 0 4px 14px rgba(15, 23, 42, 0.04);
  transition: transform 280ms ease, box-shadow 280ms ease, border-color 280ms ease;
}

.intel-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(15, 23, 42, 0.08);
  border-color: rgba(15, 118, 110, 0.25);
}

.intel-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 10px;
}

.intel-source-tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 600;
  border-radius: 999px;
  letter-spacing: 0.01em;
}

.intel-source-tag--hn     { background: rgba(255, 102, 0, 0.10);  color: #c14d00; }
.intel-source-tag--x      { background: rgba(15, 23, 42, 0.08);   color: #1a2230; }
.intel-source-tag--juejin { background: rgba(0, 122, 255, 0.10);  color: #0058b8; }

.intel-mock-label {
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(15, 23, 42, 0.4);
  font-weight: 600;
  padding: 3px 8px;
  border: 1px dashed rgba(15, 23, 42, 0.25);
  border-radius: 6px;
}

.intel-card h3 {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.4;
  color: rgba(15, 23, 42, 0.92);
  font-weight: 600;
}

.intel-bullets {
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.intel-bullets li {
  position: relative;
  padding-left: 16px;
  font-size: 13.5px;
  line-height: 1.55;
  color: rgba(15, 23, 42, 0.7);
}

.intel-bullets li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--teal, #0f766e);
  font-size: 11px;
  top: 3px;
}

.intel-archive {
  margin: 0;
  padding-top: 10px;
  border-top: 1px dashed rgba(15, 23, 42, 0.10);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 11.5px;
  color: rgba(15, 118, 110, 0.85);
  letter-spacing: -0.01em;
  word-break: break-all;
}

.intel-prompt-box {
  margin-top: 28px;
  position: relative;
  padding: 22px 60px 22px 22px;
  background: #0a1218;
  border-radius: 16px;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.18);
}

.intel-prompt-label {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #6e7c83;
  font-weight: 600;
}

.intel-prompt-box pre {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
}

.intel-prompt-box code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 13.5px;
  line-height: 1.65;
  color: #d7eee8;
  letter-spacing: 0;
  background: transparent;
}

#intelPromptCopy {
  position: absolute;
  top: 16px;
  right: 16px;
  padding: 6px 14px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  color: #d7eee8;
  font-size: 12.5px;
  font-weight: 500;
  cursor: pointer;
  transition: background 200ms ease, border-color 200ms ease;
}

#intelPromptCopy:hover {
  background: rgba(15, 118, 110, 0.4);
  border-color: rgba(15, 118, 110, 0.6);
}

#intelPromptCopy.is-copied {
  background: var(--teal, #0f766e);
  border-color: var(--teal, #0f766e);
  color: white;
}

@media (max-width: 880px) {
  .intel-results { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .intel-sources {
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
  }
  .source-pill { font-size: 12px; padding: 8px 6px; }
  .intel-pipe-line {
    /* 简化为 3 条线在移动端 */
  }
  .intel-pipe-line:nth-child(2),
  .intel-pipe-line:nth-child(4),
  .intel-pipe-line:nth-child(6) { display: none; }
  .intel-pipe-line:nth-child(1) { left: 16.67% !important; }
  .intel-pipe-line:nth-child(3) { left: 50%    !important; }
  .intel-pipe-line:nth-child(5) { left: 83.33% !important; }
  .intel-pipe-hub { font-size: 12.5px; padding: 10px 16px; }
  .intel-prompt-box { padding: 18px 18px 50px 18px; }
  #intelPromptCopy { top: auto; bottom: 14px; right: 14px; }
  .active-intel-section { padding-top: 56px; padding-bottom: 56px; }
}

/* ============== 「这不是 · 这是」反向定义板块 ============== */
.notthis-section {
  padding-top: 72px;
  padding-bottom: 72px;
}

.notthis-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  max-width: 1080px;
  margin: 0 auto;
}

.notthis-col {
  padding: 32px 28px;
  border-radius: 18px;
  background: rgba(15, 118, 110, 0.04);
  border: 1px solid rgba(15, 118, 110, 0.10);
}

.notthis-col--not {
  background: rgba(160, 80, 80, 0.05);
  border-color: rgba(160, 80, 80, 0.18);
}

.notthis-label {
  display: inline-block;
  margin: 0 0 18px;
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.notthis-col--not .notthis-label {
  background: rgba(160, 80, 80, 0.14);
  color: #a14d4d;
}

.notthis-col--is .notthis-label {
  background: rgba(15, 118, 110, 0.14);
  color: var(--teal, #0f766e);
}

.notthis-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.notthis-col li {
  position: relative;
  padding-left: 28px;
  line-height: 1.65;
  font-size: 15.5px;
  color: rgba(15, 23, 42, 0.78);
}

.notthis-col--not li::before {
  content: "✕";
  position: absolute;
  left: 0;
  top: 0;
  color: #c08585;
  font-weight: 700;
  font-size: 16px;
}

.notthis-col--is li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--teal, #0f766e);
  font-weight: 700;
  font-size: 16px;
}

@media (max-width: 720px) {
  .notthis-grid { grid-template-columns: 1fr; gap: 16px; }
  .notthis-col  { padding: 24px 20px; }
  .notthis-section { padding-top: 56px; padding-bottom: 56px; }
}

/* ============== 定价正名 (packages 内) ============== */
.pricing-rationale {
  margin: 18px auto 0;
  max-width: 640px;
  padding: 14px 22px;
  border-left: 3px solid var(--teal, #0f766e);
  background: rgba(15, 118, 110, 0.06);
  border-radius: 0 12px 12px 0;
  font-size: 15px;
  color: rgba(15, 23, 42, 0.75);
  line-height: 1.6;
  font-style: italic;
}

/* ============== FAQ 硬问题板块 ============== */
.faq-section {
  padding-top: 72px;
  padding-bottom: 72px;
}

.faq-list {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  border: 1px solid rgba(15, 23, 42, 0.10);
  border-radius: 14px;
  background: white;
  overflow: hidden;
  transition: border-color 220ms ease, box-shadow 220ms ease;
}

.faq-item[open] {
  border-color: rgba(15, 118, 110, 0.4);
  box-shadow: 0 4px 18px rgba(15, 118, 110, 0.08);
}

.faq-item summary {
  cursor: pointer;
  padding: 18px 24px;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-weight: 500;
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary::after {
  content: "+";
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: rgba(15, 118, 110, 0.10);
  color: var(--teal, #0f766e);
  font-size: 22px;
  line-height: 1;
  transition: transform 280ms var(--ease-snappy, cubic-bezier(.2,.8,.2,1));
}

.faq-item[open] summary::after {
  content: "−";
  background: var(--teal, #0f766e);
  color: white;
  transform: rotate(180deg);
}

.faq-q {
  font-size: 16px;
  color: rgba(15, 23, 42, 0.92);
}

.faq-a {
  margin: 0;
  padding: 0 24px 22px;
  color: rgba(15, 23, 42, 0.72);
  line-height: 1.7;
  font-size: 15px;
}

@media (max-width: 720px) {
  .faq-section { padding-top: 56px; padding-bottom: 56px; }
  .faq-item summary { padding: 16px 20px; gap: 12px; }
  .faq-q { font-size: 15px; }
  .faq-a { padding: 0 20px 18px; }
}

/* ============== 移动端粘底 CTA ============== */
.sticky-cta {
  position: fixed;
  bottom: 18px;
  left: 50%;
  transform: translateX(-50%) translateY(120%);
  display: none;
  align-items: center;
  gap: 8px;
  padding: 13px 22px;
  background: var(--teal, #0f766e);
  color: white;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  border-radius: 999px;
  box-shadow: 0 10px 30px rgba(15, 118, 110, 0.35), 0 0 0 1px rgba(255,255,255,0.08) inset;
  z-index: 60;
  opacity: 0;
  transition: transform 380ms cubic-bezier(.2,.8,.2,1), opacity 280ms ease;
  white-space: nowrap;
}

.sticky-cta-icon { font-size: 17px; line-height: 1; }

.sticky-cta.is-visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.sticky-cta:hover {
  transform: translateX(-50%) translateY(-2px);
}

@media (max-width: 720px) {
  .sticky-cta { display: inline-flex; }
}

/* ============== QR 二维码 zoom modal ============== */
.qr-zoom-overlay {
  position: fixed;
  inset: 0;
  background: rgba(8, 12, 18, 0.86);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 280ms ease;
  padding: 20px;
}

.qr-zoom-overlay.is-open { opacity: 1; }

.qr-zoom-content {
  position: relative;
  background: white;
  padding: 28px 28px 22px;
  border-radius: 22px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  max-width: min(92vw, 380px);
  transform: scale(0.92);
  transition: transform 320ms cubic-bezier(.2,.8,.2,1);
  box-shadow: 0 30px 80px rgba(0,0,0,0.4);
}

.qr-zoom-overlay.is-open .qr-zoom-content { transform: scale(1); }

.qr-zoom-content img {
  width: 100%;
  max-width: 320px;
  height: auto;
  border-radius: 12px;
  display: block;
}

.qr-zoom-hint {
  margin: 0;
  font-size: 14px;
  color: rgba(15, 23, 42, 0.6);
  text-align: center;
  letter-spacing: 0.02em;
}

.qr-zoom-close {
  position: absolute;
  top: 10px;
  right: 14px;
  width: 36px;
  height: 36px;
  background: rgba(15, 23, 42, 0.05);
  border: 0;
  border-radius: 50%;
  font-size: 24px;
  color: rgba(15, 23, 42, 0.5);
  cursor: pointer;
  transition: background 200ms ease, color 200ms ease;
}

.qr-zoom-close:hover {
  background: rgba(15, 23, 42, 0.12);
  color: rgba(15, 23, 42, 0.85);
}

/* QR 鼠标 cursor 暗示可点击 */
.cta-wechat-qr {
  cursor: zoom-in;
  transition: transform 220ms ease;
}
.cta-wechat-qr:hover { transform: scale(1.02); }

/* ============== Hero · Vault 关系图谱（替代假终端） ============== */
.graph-window {
  position: absolute;
  right: 0;
  bottom: 0;
  width: min(88%, 520px);
  background: #0a1218;
  color: #d7eee8;
  transform: translateZ(40px);
  box-shadow: var(--shadow-glow), var(--shadow-lg);
  overflow: hidden;
}

.graph-window .window-bar {
  border-color: #1f2a30;
  color: #8a9ba2;
}

.graph-stage {
  position: relative;
  aspect-ratio: 1 / 1;
  width: 100%;
}

#vaultGraph {
  display: block;
  width: 100%;
  height: 100%;
}

.graph-caption {
  position: absolute;
  bottom: 12px;
  left: 0;
  right: 0;
  margin: 0;
  padding: 0 18px;
  text-align: center;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: #6e7c83;
  font-style: italic;
  pointer-events: none;
}

@keyframes vg-pulse {
  0%, 100% { opacity: 0.95; transform: scale(1); transform-box: fill-box; transform-origin: center; }
  50%      { opacity: 1;    transform: scale(1.18); transform-box: fill-box; transform-origin: center; }
}

@media (max-width: 720px) {
  .graph-window {
    position: relative;
    width: 100%;
    margin-top: 24px;
  }
}

/* ============== About 风谕 区块 ============== */
.about-section {
  padding-top: 80px;
  padding-bottom: 80px;
}

.about-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 56px;
  align-items: center;
  max-width: 1080px;
  margin: 0 auto;
}

.about-portrait {
  margin: 0;
  position: relative;
  aspect-ratio: 4 / 5;
  border-radius: 18px;
  overflow: hidden;
  background: linear-gradient(135deg, #e7eeec 0%, #cfd9d6 100%);
  box-shadow: var(--shadow-lg);
}

.about-portrait::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  border: 1px solid rgba(15, 118, 110, 0.18);
  pointer-events: none;
}

.about-portrait img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 600ms var(--ease-snappy);
}

.about-portrait:hover img {
  transform: scale(1.03);
}

.about-copy {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.about-copy h2 {
  margin: 0;
  font-size: clamp(22px, 2.4vw, 30px);
  line-height: 1.3;
  letter-spacing: -0.005em;
}

.about-copy > p {
  margin: 0;
  color: var(--text-muted, rgba(15, 23, 42, 0.72));
  line-height: 1.7;
}

.about-tags {
  list-style: none;
  margin: 4px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.about-tags li {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(15, 118, 110, 0.08);
  border: 1px solid rgba(15, 118, 110, 0.18);
  color: var(--teal, #0f766e);
  font-size: 13px;
  letter-spacing: 0.01em;
  font-weight: 500;
}

.about-quote {
  margin: 12px 0 0 !important;
  padding: 14px 18px;
  border-left: 3px solid var(--teal, #0f766e);
  background: rgba(15, 118, 110, 0.04);
  border-radius: 0 12px 12px 0;
  font-style: italic;
  font-size: 16px !important;
  color: rgba(15, 23, 42, 0.85) !important;
  line-height: 1.65 !important;
}

@media (max-width: 720px) {
  .about-layout {
    grid-template-columns: 1fr;
    gap: 28px;
    text-align: left;
  }
  .about-portrait {
    max-width: 220px;
    margin: 0 auto;
  }
  .about-section {
    padding-top: 56px;
    padding-bottom: 56px;
  }
}

/* ============== Hero byline (品牌署名) ============== */
.hero-byline {
  margin: 8px 0 0;
  font-size: 15px;
  font-style: italic;
  color: var(--text-muted, rgba(15, 23, 42, 0.6));
  letter-spacing: 0.02em;
}

/* ============== CTA 微信卡片 ============== */
.cta-wechat-card {
  margin: 36px auto 0;
  max-width: 560px;
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 24px;
  padding: 24px 28px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 18px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.cta-wechat-qr {
  width: 160px;
  height: 160px;
  border-radius: 12px;
  background: #fff;
  padding: 6px;
  flex-shrink: 0;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.18);
}

.cta-wechat-meta {
  flex: 1;
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.cta-wechat-id {
  margin: 0;
  font-size: 17px;
  font-weight: 600;
  color: inherit;
  letter-spacing: 0.01em;
}

.cta-wechat-caption {
  margin: 0;
  font-size: 14px;
  opacity: 0.7;
  letter-spacing: 0.04em;
}

@media (max-width: 640px) {
  .cta-wechat-card {
    flex-direction: column;
    text-align: center;
    gap: 16px;
    padding: 20px;
  }
  .cta-wechat-meta {
    text-align: center;
  }
  .cta-wechat-qr {
    width: 200px;
    height: 200px;
  }
}