/* =============================================================
 * portfolio · white-glass-botanical · master stylesheet
 * shared by index.html and projects/p{1..4}-*.html
 * =============================================================
 */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

/* =============================================================
 * === TOKENS ===
 * ============================================================= */
:root {
  /* ---- color · backgrounds (paper warm v2 — 米白纸色) ---- */
  --color-bg: #faf8f4;
  --color-bg-soft: #f5f1e8;
  --color-bg-mist: #ecf3ee;

  /* ---- color · text (contrast bump v2 — darker for paper bg) ---- */
  --color-text: #0a0e0c;
  --color-text-body: #1f2624;
  --color-text-muted: #535b56;
  --color-text-hint: #6c7670;

  /* ---- color · botanical accents ---- */
  --color-leaf-deep: #2d6b48;
  --color-leaf: #5fa57b;
  --color-sage: #a8c8b0;
  --color-mint-hl: #d4ebd9;

  /* ---- color · glass ---- */
  --color-glass: rgba(255, 255, 255, 0.55);
  --color-glass-strong: rgba(255, 255, 255, 0.78);
  --color-glass-border: rgba(168, 200, 176, 0.28);

  /* ---- typography ---- */
  --font-display: 'Space Grotesk', -apple-system, 'PingFang SC', 'Microsoft YaHei UI', 'Microsoft YaHei', system-ui, sans-serif;
  --font-body: 'Space Grotesk', -apple-system, 'PingFang SC', 'Microsoft YaHei UI', 'Microsoft YaHei', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, Consolas, monospace;

  /* ---- shadows (green-tinted diffusion) ---- */
  --shadow-card: 0 20px 60px -28px rgba(45, 107, 72, 0.18);
  --shadow-card-hover: 0 32px 80px -28px rgba(45, 107, 72, 0.28);
  --shadow-inner-glass:
    inset 0 1px 0 rgba(255, 255, 255, 0.55),
    inset 0 -1px 0 rgba(168, 200, 176, 0.12);

  /* ---- radii ---- */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-pill: 999px;

  /* ---- motion ---- */
  --ease-out-soft: cubic-bezier(0.16, 1, 0.3, 1);
  --transition-default:
    transform 280ms var(--ease-out-soft),
    box-shadow 280ms var(--ease-out-soft),
    border-color 200ms ease,
    background 200ms ease,
    color 200ms ease;

  /* ---- layout ---- */
  --container-max: 1200px;
  --container-pad: clamp(20px, 4vw, 56px);
  --section-rhythm: clamp(80px, 12vw, 160px);

  /* ---- mouse-light (set by JS) ---- */
  --mouse-x: 50%;
  --mouse-y: 50%;
}

/* =============================================================
 * === RESET / NORMALIZE ===
 * ============================================================= */
*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  min-height: 100dvh;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.62;
  color: var(--color-text-body);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  position: relative;
}

/* mouse-light layer (controlled by --mouse-x / --mouse-y) */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  background: radial-gradient(
    circle 600px at var(--mouse-x) var(--mouse-y),
    rgba(212, 235, 217, 0.4),
    transparent 70%
  );
  transition: background 120ms linear;
}

img, svg, video { display: block; max-width: 100%; height: auto; }
img { border: 0; }

a {
  color: inherit;
  text-decoration: none;
  transition: color 200ms ease;
}
a:hover { color: var(--color-leaf-deep); }

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

ul, ol { padding-inline-start: 1.25em; }

hr {
  border: 0;
  border-block-start: 1px solid var(--color-glass-border);
  margin-block: 2rem;
}

::selection {
  background: var(--color-mint-hl);
  color: var(--color-text);
}

/* =============================================================
 * === SKIP TO CONTENT ===
 * ============================================================= */
.skip-to-content {
  position: absolute;
  inset-inline-start: 12px;
  inset-block-start: -100px;
  z-index: 100;
  padding: 10px 18px;
  background: var(--color-leaf-deep);
  color: #ffffff;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border-radius: var(--radius-md);
  transition: top 180ms var(--ease-out-soft);
}
.skip-to-content:focus {
  inset-block-start: 12px;
  outline: 2px solid var(--color-leaf-deep);
  outline-offset: 3px;
}

/* =============================================================
 * === TYPOGRAPHY HIERARCHY ===
 * ============================================================= */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  color: var(--color-text);
  margin: 0 0 0.5em;
  font-weight: 500;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1.05;
}

h2 {
  font-size: clamp(1.5rem, 2.5vw + 0.5rem, 2.25rem);
  font-weight: 500;
  line-height: 1.18;
}

h3 { font-size: 1.25rem; font-weight: 500; line-height: 1.3; }
h4 { font-size: 1rem; font-weight: 500; }

p { margin: 0 0 1em; }

p, li { color: var(--color-text-body); }

small, .text-small { font-size: 0.875rem; color: var(--color-text-muted); }

.mono,
.label-mono {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-block-end: 0.75rem;
}
.eyebrow::before {
  content: "";
  inline-size: 18px;
  block-size: 1px;
  background: var(--color-sage);
}

code, kbd, samp, pre {
  font-family: var(--font-mono);
  font-size: 0.875em;
}

code {
  padding: 2px 6px;
  border-radius: 6px;
  background: var(--color-bg-mist);
  color: var(--color-leaf-deep);
}

pre {
  padding: 18px 20px;
  border-radius: var(--radius-md);
  background: var(--color-bg-soft);
  border: 1px solid var(--color-glass-border);
  overflow: auto;
  line-height: 1.55;
}
pre code { padding: 0; background: transparent; color: var(--color-text-body); }

/* =============================================================
 * === GLASS PRIMITIVE ===
 * ============================================================= */
.glass-panel {
  position: relative;
  background: var(--color-glass);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card), var(--shadow-inner-glass);
  transition: var(--transition-default);
}

.glass-panel--strong {
  background: var(--color-glass-strong);
}

.glass-panel--interactive:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover), var(--shadow-inner-glass);
  border-color: rgba(168, 200, 176, 0.5);
}

/* =============================================================
 * === STATUS PILL + SIGNAL DOT ===
 * ============================================================= */
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px 5px 10px;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  background: var(--color-glass-strong);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-pill);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.status-pill--live  { color: var(--color-leaf-deep); border-color: rgba(95, 165, 123, 0.45); }
.status-pill--mvp   { color: #8a6418; border-color: rgba(217, 168, 90, 0.5); }

.signal-dot {
  inline-size: 6px;
  block-size: 6px;
  border-radius: 50%;
  background: var(--color-leaf);
  animation: pulse 1.8s ease-in-out infinite;
  flex-shrink: 0;
}
.status-pill--mvp .signal-dot { background: #d9a85a; }

/* =============================================================
 * === DATA BADGE ===
 * ============================================================= */
.data-badge {
  display: inline-flex;
  flex-direction: column;
  gap: 2px;
  padding: 10px 14px;
  background: var(--color-glass);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-md);
  min-inline-size: 96px;
}
.data-badge .num {
  order: 1;
  font-family: var(--font-mono);
  font-size: 1.75rem;
  line-height: 1;
  font-weight: 500;
  color: var(--color-leaf-deep);
  letter-spacing: -0.02em;
}
.data-badge .label {
  order: 2;
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.data-badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* =============================================================
 * === TECH PILL ===
 * ============================================================= */
.tech-pill {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  background: transparent;
  border: 1px solid rgba(168, 200, 176, 0.4);
  border-radius: var(--radius-pill);
  transition: var(--transition-default);
}
.tech-pill:hover {
  color: var(--color-leaf-deep);
  border-color: var(--color-leaf);
}

.tech-pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 8px;
}

/* =============================================================
 * === MINI BAR ===
 * ============================================================= */
.mini-bar {
  inline-size: 80px;
  block-size: 8px;
  border-radius: 4px;
  background: rgba(168, 200, 176, 0.3);
  overflow: hidden;
  display: inline-block;
  vertical-align: middle;
}
.mini-bar > i {
  display: block;
  block-size: 100%;
  background: var(--color-leaf-deep);
  border-radius: inherit;
  transform-origin: left center;
}

/* =============================================================
 * === DOCK NAV (floating top header) ===
 * ============================================================= */
.dock-nav {
  position: fixed;
  inset-block-start: 16px;
  inset-inline: 0;
  margin-inline: auto;
  z-index: 50;
  inline-size: max-content;
  max-inline-size: calc(100% - 32px);
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 12px 24px;
  background: var(--color-glass-strong);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-pill);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  box-shadow: var(--shadow-card), var(--shadow-inner-glass);
}

.dock-nav__brand {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.9375rem;
  letter-spacing: -0.01em;
  color: var(--color-text);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.dock-nav__brand::before {
  content: "";
  inline-size: 8px;
  block-size: 8px;
  border-radius: 50%;
  background: var(--color-leaf);
  box-shadow: 0 4px 10px -3px rgba(95, 165, 123, 0.35);
}

.dock-nav__list {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.dock-nav__list a {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  border-radius: var(--radius-pill);
  transition: var(--transition-default);
}
.dock-nav__list a:hover,
.dock-nav__list a[aria-current="page"] {
  color: var(--color-leaf-deep);
  background: var(--color-mint-hl);
}

/* =============================================================
 * === BUTTONS ===
 * ============================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 10px 20px;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-body);
  background: var(--color-glass);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-md);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  cursor: pointer;
  transition: var(--transition-default);
  will-change: transform;
}
.btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(45, 107, 72, 0.4);
}
.btn:active {
  transform: translateY(0) scale(0.99);
}

.btn--primary {
  background: var(--color-leaf-deep);
  color: #ffffff;
  border-color: transparent;
}
.btn--primary:hover {
  background: #245a3a;
  color: #ffffff;
  box-shadow: 0 20px 50px -20px rgba(45, 107, 72, 0.55);
}

.btn--ghost {
  background: transparent;
  border-color: rgba(168, 200, 176, 0.5);
}

.btn .btn__arrow {
  display: inline-block;
  transition: transform 220ms var(--ease-out-soft);
}
.btn:hover .btn__arrow { transform: translateX(3px); }

/* =============================================================
 * === LEAF DECORATION ===
 * ============================================================= */
.leaf-decoration {
  position: absolute;
  pointer-events: none;
  opacity: 0.55;
  color: var(--color-sage);
  animation: sway 7s ease-in-out infinite;
  transform-origin: 50% 100%;
  z-index: 0;
}
.leaf-decoration svg {
  inline-size: 100%;
  block-size: 100%;
  display: block;
}

.leaf-decoration--hero {
  inset-block-start: -4%;
  inset-inline-end: -4%;
  inline-size: clamp(220px, 38%, 460px);
  block-size: auto;
  opacity: 0.42;
  color: var(--color-leaf);
}

.leaf-decoration--corner {
  inline-size: 120px;
  opacity: 0.35;
  color: var(--color-sage);
}

.leaf-decoration--vine {
  inline-size: clamp(160px, 24vw, 280px);
  color: var(--color-leaf);
  animation: drift 9s ease-in-out infinite alternate;
}

.leaf-decoration--moss {
  inline-size: 80px;
  color: var(--color-sage);
  animation: float 6s ease-in-out infinite;
}

/* =============================================================
 * === SCROLL-FADE ===
 * ============================================================= */
/* progressive enhancement — default visible so no-JS / SEO crawlers / long-screenshot tools see content */
.scroll-fade { opacity: 1; transform: none; }
.scroll-fade--armed { opacity: 0; transform: translateY(12px); transition: opacity 400ms var(--ease-out-soft), transform 400ms var(--ease-out-soft); }
.scroll-fade--armed.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .scroll-fade--armed { opacity: 1; transform: none; transition: none; } }
.scroll-fade--delay-1 { transition-delay: 80ms; }
.scroll-fade--delay-2 { transition-delay: 160ms; }
.scroll-fade--delay-3 { transition-delay: 240ms; }

/* =============================================================
 * === KEYFRAMES ===
 * ============================================================= */
@keyframes sway {
  0%, 100% { transform: rotate(-1.5deg); }
  50%      { transform: rotate(1.5deg); }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-6px); }
}

@keyframes pulse {
  0%, 100% { opacity: 0.5; transform: scale(1); }
  50%      { opacity: 1;   transform: scale(1.18); }
}

@keyframes drift {
  0%   { transform: translate(0, 0); }
  100% { transform: translate(8px, -12px); }
}

/* =============================================================
 * === LAYOUT · CONTAINER ===
 * ============================================================= */
.container {
  inline-size: 100%;
  max-inline-size: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.section {
  position: relative;
  padding-block: var(--section-rhythm);
}

.section--mist {
  background: linear-gradient(180deg, transparent 0%, var(--color-bg-mist) 50%, transparent 100%);
}

.section__head {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-block-end: clamp(40px, 6vw, 72px);
  max-inline-size: 720px;
}

/* =============================================================
 * === LAYOUT · HERO (12-col grid, content 7, deco 5) ===
 * ============================================================= */
.hero {
  position: relative;
  min-block-size: clamp(560px, 78vh, 760px);
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: clamp(24px, 4vw, 48px);
  align-items: center;
  padding-block: clamp(120px, 16vw, 180px) clamp(80px, 12vw, 120px);
}

.hero__content {
  grid-column: 1 / span 7;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: start;
  gap: 18px;
  position: relative;
  z-index: 1;
}

.hero__decoration {
  grid-column: 8 / span 5;
  position: relative;
  block-size: clamp(360px, 50vw, 560px);
}

.hero__title {
  margin: 0;
}

.hero__lede {
  font-size: clamp(1.0625rem, 1.2vw + 0.5rem, 1.25rem);
  color: var(--color-text-body);
  max-inline-size: 56ch;
  line-height: 1.6;
}

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
  margin-block-start: 6px;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-block-start: 14px;
}

/* =============================================================
 * === LAYOUT · BENTO (projects asymmetric grid) ===
 * ============================================================= */
.bento {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: clamp(20px, 2.4vw, 32px);
}

.bento__cell { position: relative; min-block-size: 320px; }

.bento__cell--p1 { grid-column: 1 / span 7; }
.bento__cell--p4 { grid-column: 8 / span 5; }

/* =============================================================
 * === PROJECT CARD ===
 * ============================================================= */
.project-card {
  position: relative;
  block-size: 100%;
  padding: clamp(24px, 3vw, 36px);
  display: flex;
  flex-direction: column;
  gap: 18px;
  overflow: hidden;
}
.project-card__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}
.project-card__index {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-hint);
}
.project-card__title {
  font-size: clamp(1.25rem, 1.6vw + 0.4rem, 1.6rem);
  margin: 0;
  letter-spacing: -0.02em;
}
.project-card__subtitle {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  margin: 0;
}
.project-card__body { flex: 1; }
.project-card__metrics { margin-block-start: auto; }
.project-card__foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-block-start: 6px;
}

/* =============================================================
 * === CASE STUDY LAYOUT ===
 * ============================================================= */
.case-hero {
  padding-block: clamp(140px, 18vw, 200px) clamp(48px, 8vw, 96px);
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: clamp(24px, 4vw, 48px);
  position: relative;
}
.case-hero__content { grid-column: 1 / span 8; }
.case-hero__side    { grid-column: 9 / span 4; align-self: end; }

.case-meta-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
}

.prose {
  max-inline-size: 68ch;
  font-size: 1rem;
  line-height: 1.7;
}
.prose h2 { margin-block: 1.6em 0.6em; }
.prose h3 { margin-block: 1.4em 0.5em; }
.prose p, .prose ul, .prose ol { margin-block-end: 1em; }
.prose a {
  color: var(--color-leaf-deep);
  border-block-end: 1px solid rgba(95, 165, 123, 0.4);
}

.case-grid {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: clamp(28px, 4vw, 64px);
  align-items: start;
}
.case-grid__nav {
  position: sticky;
  inset-block-start: 96px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.case-grid__nav a {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  padding: 6px 10px;
  border-inline-start: 1px solid var(--color-glass-border);
  transition: var(--transition-default);
}
.case-grid__nav a:hover,
.case-grid__nav a[aria-current="true"] {
  color: var(--color-leaf-deep);
  border-inline-start-color: var(--color-leaf-deep);
  background: linear-gradient(90deg, var(--color-mint-hl), transparent);
}

/* =============================================================
 * === FOOTER ===
 * ============================================================= */
.site-footer {
  border-block-start: 1px solid rgba(168, 200, 176, 0.3);
  padding-block: 28px;
  margin-block-start: var(--section-rhythm);
}
.site-footer__row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
}

/* =============================================================
 * === UTILITIES ===
 * ============================================================= */
.u-flex      { display: flex; }
.u-flex-col  { display: flex; flex-direction: column; }
.u-gap-sm    { gap: 8px; }
.u-gap-md    { gap: 16px; }
.u-gap-lg    { gap: 24px; }
.u-mt-sm     { margin-block-start: 0.5rem; }
.u-mt-md     { margin-block-start: 1rem; }
.u-mt-lg     { margin-block-start: 2rem; }
.u-mt-xl     { margin-block-start: 3rem; }
.u-mb-sm     { margin-block-end: 0.5rem; }
.u-mb-md     { margin-block-end: 1rem; }
.u-mb-lg     { margin-block-end: 2rem; }
.u-text-muted { color: var(--color-text-muted); }
.u-text-leaf  { color: var(--color-leaf-deep); }
.u-mono       { font-family: var(--font-mono); }
.u-sr-only {
  position: absolute;
  inline-size: 1px;
  block-size: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* =============================================================
 * === FOCUS-VISIBLE ===
 * ============================================================= */
:focus { outline: none; }

:focus-visible {
  outline: 2px solid var(--color-leaf-deep);
  outline-offset: 3px;
  border-radius: 4px;
}

a:focus-visible,
button:focus-visible,
.btn:focus-visible,
.tech-pill:focus-visible {
  outline: 2px solid var(--color-leaf-deep);
  outline-offset: 3px;
}

/* =============================================================
 * === MEDIA QUERY · TABLET / MOBILE (max-width: 768px) ===
 * ============================================================= */
@media (max-width: 768px) {
  :root {
    --section-rhythm: clamp(64px, 16vw, 100px);
  }

  h1 { font-size: clamp(2rem, 9vw, 2.75rem); }
  h2 { font-size: clamp(1.35rem, 6vw, 1.75rem); }

  .glass-panel,
  .dock-nav,
  .status-pill,
  .btn {
    backdrop-filter: blur(12px) saturate(160%);
    -webkit-backdrop-filter: blur(12px) saturate(160%);
  }

  .dock-nav {
    gap: 10px;
    padding: 10px 14px;
    max-inline-size: calc(100% - 20px);
  }
  .dock-nav__list { gap: 2px; }
  .dock-nav__list a { min-block-size: 44px; padding: 12px 8px; font-size: 0.6875rem; }
  .case-grid__nav a { min-block-size: 44px; padding-block: 12px; }
  .btn { min-block-size: 44px; padding-block: 14px; }

  .hero {
    grid-template-columns: 1fr;
    min-block-size: auto;
    padding-block: clamp(96px, 22vw, 140px) clamp(48px, 12vw, 80px);
    gap: 32px;
  }
  .hero__content   { grid-column: 1 / -1; }
  .hero__decoration {
    grid-column: 1 / -1;
    block-size: 180px;
    transform: scale(0.4);
    transform-origin: top right;
    opacity: 0.4;
  }
  .leaf-decoration--hero { display: none; }

  .bento {
    grid-template-columns: 1fr;
    gap: 18px;
  }
  .bento__cell--p1,
  .bento__cell--p4 { grid-column: 1 / -1; }

  .case-hero {
    grid-template-columns: 1fr;
  }
  .case-hero__content,
  .case-hero__side { grid-column: 1 / -1; }

  .case-grid {
    grid-template-columns: 1fr;
  }
  .case-grid__nav {
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
    border-block-end: 1px solid var(--color-glass-border);
    padding-block-end: 12px;
  }
  .case-grid__nav a {
    border-inline-start: 0;
    border-block-end: 1px solid transparent;
  }

  .data-badge { min-inline-size: 80px; padding: 8px 12px; }
  .data-badge .num { font-size: 1.45rem; }
}

/* =============================================================
 * === MEDIA QUERY · REDUCED MOTION ===
 * ============================================================= */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  body::before { background: none; }
  .scroll-fade { opacity: 1; transform: none; }
  .leaf-decoration { animation: none; }
}

/* =============================================================
 * === MEDIA QUERY · PRINT ===
 * ============================================================= */
@media print {
  .dock-nav, .leaf-decoration, body::before { display: none !important; }
  body { background: #ffffff; color: #0a0e0c; }
  .glass-panel {
    background: #ffffff;
    box-shadow: none;
    border-color: #a8c8b0;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
}

/* === LAYOUT UTILITIES (promoted from inline) === */
.contact-panel { padding: clamp(28px, 4vw, 44px); }

/* === EMAIL LINK (button reset, looks like underlined link) === */
.email-link {
  background: transparent;
  border: 0;
  padding: 0;
  margin: 0;
  font: inherit;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 1.25rem;
  color: var(--color-leaf-deep);
  border-block-end: 1px solid rgba(95, 165, 123, 0.4);
  line-height: 1.4;
  transition: color 200ms ease, border-color 200ms ease;
}
.email-link:hover {
  color: var(--color-leaf);
  border-block-end-color: var(--color-leaf);
}
.email-link:focus-visible {
  outline: 2px solid var(--color-leaf-deep);
  outline-offset: 3px;
  border-radius: 2px;
}

/* === EMAIL TOAST === */
.toast {
  position: fixed;
  inset-block-end: 24px;
  inset-inline-end: 24px;
  z-index: 200;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  border-radius: 16px;
  max-inline-size: calc(100vw - 48px);
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 320ms var(--ease-out-soft),
              transform 320ms var(--ease-out-soft);
  pointer-events: none;
}
.toast[hidden] { display: none; }
.toast--show {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.toast__dot {
  inline-size: 8px;
  block-size: 8px;
  border-radius: 50%;
  background: var(--color-leaf);
  flex-shrink: 0;
  box-shadow: 0 0 0 4px rgba(95, 165, 123, 0.18);
  animation: pulse 1.8s ease-in-out infinite;
}
.toast__body { min-inline-size: 0; }
.toast__title {
  font-size: 0.8125rem;
  color: var(--color-text);
  margin: 0;
  font-weight: 500;
  line-height: 1.25;
}
.toast__email {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin: 3px 0 0;
  letter-spacing: 0.02em;
  line-height: 1.2;
}
.toast__icon {
  color: var(--color-leaf-deep);
  flex-shrink: 0;
}

@media (max-width: 768px) {
  .toast {
    inset-block-end: 16px;
    inset-inline-end: 16px;
    inset-inline-start: 16px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .toast {
    transition: opacity 0.01s, transform 0.01s;
  }
  .toast__dot { animation: none; }
}

/* === ARCHITECTURE DIAGRAM UTILITIES (vision rewrite v2.0) === */

/* 1. Outer container for 5-layer architecture diagram */
.arch-system {
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: center;
}

/* 2. Single layer row (glass-panel feel) */
.layer-band {
  width: 100%;
  max-width: 1100px;
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: clamp(20px, 3vw, 36px);
  padding: clamp(20px, 2.5vw, 32px);
  background: rgba(255, 255, 255, 0.55);
  /* backdrop blur 去掉: 6 个全宽 band 叠加实时模糊 = system 段滚动 jank 主因; band 已 72% 白底(下方 override), 视觉损失极小 (程 2026-06-26 滚动卡顿修复) */
  contain: layout style;
  border: 1px solid rgba(168, 200, 176, 0.28);
  border-radius: 20px;
  box-shadow: 0 14px 40px -22px rgba(45, 107, 72, 0.12);
}

/* 3-6. Layer label block (left column) */
.layer-band__label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-block-start: 8px;
}
.layer-band__label .num {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-leaf-deep);
}
.layer-band__label .name-cn {
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 500;
  color: var(--color-text);
  letter-spacing: -0.01em;
}
.layer-band__label .name-en {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--color-text-muted);
}

/* 7. Component grid (right column) */
.layer-band__components {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
  align-items: stretch;
}

/* 8-9. Component card (small glass panel) */
.component-card {
  background: rgba(255, 255, 255, 0.65);
  border: 1px solid rgba(168, 200, 176, 0.32);
  border-radius: 14px;
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: transform 280ms var(--ease-out-soft),
              box-shadow 280ms var(--ease-out-soft),
              border-color 200ms ease;
  text-decoration: none;
  color: inherit;
  position: relative;
  min-block-size: 132px;
}
.component-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 36px -18px rgba(45, 107, 72, 0.22);
  border-color: rgba(95, 165, 123, 0.45);
}

/* 10-15. Component card inner anatomy */
.component-card__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}
.component-card__title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text);
  margin: 0;
  letter-spacing: -0.005em;
}
.component-card__slug {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--color-text-muted);
  margin-top: 2px;
}
.component-card__desc {
  font-size: 0.875rem;
  color: var(--color-text-body);
  line-height: 1.55;
  margin: 0;
}
.component-card__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: auto;
  padding-top: 4px;
}
.component-card__arrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-leaf-deep);
}

/* 16-17. Component card state variants (exploring / research) */
.component-card--exploring {
  border-style: dashed;
  border-color: rgba(95, 165, 123, 0.45);
  background: rgba(255, 255, 255, 0.45);
}
.component-card--research {
  border-style: dashed;
  border-color: rgba(168, 200, 176, 0.55);
  background: rgba(255, 255, 255, 0.40);
}

/* 18-21. Status pill state extensions
   (base .status-pill already defined earlier ~line 279; only new modifiers added here) */
.status-pill--building {
  background: rgba(217, 168, 90, 0.12);
  color: #8a6724;
  border: 1px solid rgba(217, 168, 90, 0.40);
}
.status-pill--exploring {
  background: rgba(95, 165, 123, 0.10);
  color: var(--color-leaf-deep);
  border: 1px dashed rgba(95, 165, 123, 0.55);
}
.status-pill--research {
  background: transparent;
  color: var(--color-text-muted);
  border: 1px dotted rgba(168, 200, 176, 0.60);
  font-style: italic;
}

/* 22-23. Up-arrow between layer bands */
.arch-arrow {
  width: 24px;
  height: 28px;
  color: rgba(95, 165, 123, 0.55);
  display: block;
}
.arch-arrow svg {
  width: 100%;
  height: 100%;
}

/* 24. Vision-first section spacing */
.vision-section {
  padding-block: clamp(72px, 10vw, 140px);
}
.vision-section__head {
  max-width: 720px;
  margin-block-end: clamp(32px, 5vw, 56px);
}
.vision-section__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-leaf-deep);
  display: block;
  margin-bottom: 12px;
}
.vision-section__title {
  font-family: var(--font-display);
  font-size: clamp(1.625rem, 3vw + 0.5rem, 2.5rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.18;
  color: var(--color-text);
  margin: 0;
}
.vision-section__lede {
  font-size: clamp(1rem, 1.1vw + 0.5rem, 1.125rem);
  line-height: 1.6;
  color: var(--color-text-body);
  margin-block-start: 18px;
  max-width: 60ch;
}

/* 25. Component-doc page layout (subpages — projects/<slug>.html) */
.comp-doc {
  max-width: 760px;
  margin-inline: auto;
  padding-block: clamp(80px, 10vw, 140px);
  padding-inline: clamp(20px, 4vw, 48px);
}
.comp-doc__hero {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding-block-end: clamp(40px, 6vw, 64px);
  border-bottom: 1px solid rgba(168, 200, 176, 0.30);
}
.comp-doc__hero-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.comp-doc__title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3vw + 0.5rem, 2.5rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--color-text);
  margin: 0;
}
.comp-doc__subtitle {
  font-size: 1rem;
  color: var(--color-text-body);
  line-height: 1.55;
  max-width: 60ch;
}
.comp-doc__section {
  padding-block: clamp(40px, 5vw, 64px);
}
.comp-doc__section + .comp-doc__section {
  border-top: 1px solid rgba(168, 200, 176, 0.20);
}
.comp-doc__section-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-leaf-deep);
  margin: 0 0 12px;
}
.comp-doc__section-title {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 500;
  letter-spacing: -0.015em;
  color: var(--color-text);
  margin: 0 0 18px;
}
.comp-doc__body {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text-body);
}
.comp-doc__body p + p {
  margin-top: 16px;
}
.comp-doc__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.comp-doc__list li {
  display: flex;
  gap: 12px;
  align-items: baseline;
  line-height: 1.55;
}
.comp-doc__list li::before {
  content: '·';
  font-family: var(--font-mono);
  color: var(--color-leaf-deep);
  font-size: 1.5em;
  line-height: 1;
}

/* 26. Mobile breakpoint for architecture diagram + comp-doc */
@media (max-width: 768px) {
  .layer-band {
    grid-template-columns: 1fr;
    padding: 18px;
  }
  .layer-band__components {
    grid-template-columns: 1fr;
  }
  .comp-doc {
    padding-inline: 20px;
  }
}

/* =============================================================
 * === v2.1 PAPER MODE + AFFORDANCE BOOST
 * 1. section 分页节奏 — zebra paper/mist alternation + divider
 * 2. 字号/对比 — lede 提到 17-19px, body weight 微调
 * 3. component-card — 常驻 corner ↗ + 强化 hover (border lift + arrow slide + title color shift)
 * 4. layer-band — 玻璃在米底上加 saturate, label 更醒目
 * =============================================================
 */

/* ---- 1. section alternation (页面节奏 / 分页感) ---- */
main#main > .vision-section:nth-of-type(even) {
  background: linear-gradient(180deg, transparent 0%, rgba(212, 235, 217, 0.18) 16%, rgba(212, 235, 217, 0.18) 84%, transparent 100%);
}

main#main > .vision-section + .vision-section {
  border-block-start: 1px solid rgba(168, 200, 176, 0.22);
  margin-block-start: 8px;
}

/* eyebrow 字号 + accent line 加粗 (section 标识更明显) */
.vision-section__eyebrow {
  font-size: 0.75rem !important;
  font-weight: 500;
  color: var(--color-leaf-deep) !important;
  letter-spacing: 0.22em !important;
}
.vision-section__eyebrow::before {
  content: "";
  display: inline-block;
  inline-size: 28px;
  block-size: 2px;
  background: var(--color-leaf);
  margin-inline-end: 12px;
  vertical-align: middle;
  border-radius: 1px;
}

/* ---- 2. typography 对比补足 ---- */
.vision-section__lede {
  font-size: clamp(1.0625rem, 1.1vw + 0.5rem, 1.1875rem) !important;
  color: var(--color-text-body) !important;
  line-height: 1.7 !important;
}

.comp-doc__body p,
.comp-doc__body li {
  color: var(--color-text-body) !important;
  font-size: 1.0625rem !important;
  line-height: 1.72 !important;
}

/* ---- 3. layer-band 玻璃在米底色上加亮一档 + label 醒目 ---- */
.layer-band {
  background: rgba(255, 255, 255, 0.72) !important;
  border-color: rgba(168, 200, 176, 0.42) !important;
  box-shadow: 0 18px 48px -24px rgba(45, 107, 72, 0.18), inset 0 1px 0 rgba(255, 255, 255, 0.65) !important;
}

.layer-band__label .name-cn {
  font-size: 1.1875rem !important;
  font-weight: 600 !important;
  color: var(--color-text) !important;
}
.layer-band__label .num {
  color: var(--color-leaf-deep) !important;
  font-weight: 500 !important;
}

/* ---- 4. component-card affordance — 让"可点"一眼看出 ---- */
.layer-band__components .component-card {
  position: relative;
  overflow: visible;
  border: 1px solid rgba(95, 165, 123, 0.45);
  background: rgba(255, 255, 255, 0.86);
  box-shadow: 0 6px 18px -10px rgba(45, 107, 72, 0.18), inset 0 1px 0 rgba(255, 255, 255, 0.7);
  cursor: pointer;
}

/* 默认右上角 corner ↗ icon — 常驻 affordance signal */
.layer-band__components .component-card::after {
  content: "";
  position: absolute;
  inset-block-start: 14px;
  inset-inline-end: 14px;
  inline-size: 28px;
  block-size: 28px;
  border-radius: 9px;
  background-color: rgba(95, 165, 123, 0.12);
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%232d6b48' stroke-width='1.85' stroke-linecap='round' stroke-linejoin='round'><path d='M5 4h7v7M12 4L4 12'/></svg>");
  background-repeat: no-repeat;
  background-position: center;
  background-size: 16px 16px;
  border: 1px solid rgba(95, 165, 123, 0.30);
  transition:
    transform 280ms var(--ease-out-soft),
    background-color 220ms ease,
    border-color 220ms ease,
    box-shadow 220ms ease;
  opacity: 0.85;
  pointer-events: none;
}

/* 防止 corner icon 跟标题重叠 — head 右内边距 */
.layer-band__components .component-card .component-card__head {
  padding-inline-end: 40px;
}

/* hover state — 全面强化, 让"现在你 hover 着可点的东西"一眼清楚 */
.layer-band__components .component-card:hover,
.layer-band__components .component-card:focus-visible {
  transform: translateY(-4px);
  border-color: var(--color-leaf-deep);
  background: rgba(255, 255, 255, 0.96);
  box-shadow:
    0 24px 50px -18px rgba(45, 107, 72, 0.32),
    0 4px 14px -6px rgba(45, 107, 72, 0.18),
    inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.layer-band__components .component-card:hover::after,
.layer-band__components .component-card:focus-visible::after {
  transform: translate(3px, -3px) rotate(-4deg);
  background-color: var(--color-leaf-deep);
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%23ffffff' stroke-width='1.85' stroke-linecap='round' stroke-linejoin='round'><path d='M5 4h7v7M12 4L4 12'/></svg>");
  border-color: var(--color-leaf-deep);
  opacity: 1;
  box-shadow: 0 6px 14px -4px rgba(45, 107, 72, 0.4);
}

.layer-band__components .component-card:hover .component-card__title,
.layer-band__components .component-card:focus-visible .component-card__title {
  color: var(--color-leaf-deep);
}

.layer-band__components .component-card .component-card__arrow {
  transition: transform 280ms var(--ease-out-soft), color 200ms ease, letter-spacing 200ms ease;
  color: var(--color-leaf-deep);
  font-weight: 500;
}

.layer-band__components .component-card:hover .component-card__arrow,
.layer-band__components .component-card:focus-visible .component-card__arrow {
  transform: translateX(6px);
  letter-spacing: 0.05em;
}

/* exploring / research 变体 — 保留虚线身份, 但 hover 同样 affordance */
.layer-band__components .component-card--exploring:hover,
.layer-band__components .component-card--research:hover {
  border-style: solid;
}

/* :active tactile feedback */
.layer-band__components .component-card:active {
  transform: translateY(-1px) scale(0.995);
}

/* mobile: corner icon 稍小 */
@media (max-width: 768px) {
  .layer-band__components .component-card::after {
    inline-size: 24px;
    block-size: 24px;
    background-size: 14px 14px;
    inset-block-start: 12px;
    inset-inline-end: 12px;
  }
}

/* prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
  .layer-band__components .component-card::after,
  .layer-band__components .component-card .component-card__arrow {
    transition: none;
  }
}

/* ---- 5. about/contact 段玻璃面板对比加强 (在米底色上更分明) ---- */
#about .glass-panel,
#contact .glass-panel {
  background: rgba(255, 255, 255, 0.85) !important;
}

/* ---- 6. dock-nav 在米底色上加深玻璃, 否则太透明 ---- */
.dock-nav.glass-panel {
  background: rgba(255, 255, 255, 0.78) !important;
  border-color: rgba(168, 200, 176, 0.45) !important;
  box-shadow: 0 8px 28px -14px rgba(45, 107, 72, 0.22), inset 0 1px 0 rgba(255, 255, 255, 0.7) !important;
}

/* =============================================================
 * === v2.2 ONE-SECTION-PER-VIEWPORT (除 #system, 其他每段满屏)
 * 程: "一个全页只展示一个模块部分, 除了 system 部分确实需要滚动"
 * ============================================================= */

main#main > section#vision,
main#main > section#why,
main#main > section#where {
  min-block-size: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-block: clamp(32px, 4.5vh, 72px) !important;
}

/* contact 收尾段: 不强制满屏, 高度贴内容, 清掉个人信息下方的大段空白 (程 2026-06-26) */
main#main > section#contact {
  min-block-size: auto;
  padding-block: clamp(64px, 9vw, 120px) clamp(48px, 7vw, 88px);
}

/* hero 的 grid 容器自然撑满 */
main#main > section#vision > div {
  width: 100%;
}

/* why/where/about 的 head 容器 */
main#main > section#why > .vision-section__head,
main#main > section#where > .vision-section__head,
main#main > section#about > .vision-section__head,
main#main > section#contact > .vision-section__head {
  width: 100%;
}

/* contact 段的 glass-panel 容器 */
main#main > section#contact > .glass-panel {
  width: 100%;
}

/* mobile: 100dvh 改 auto, 让短 section 不留过多空白 */
@media (max-width: 768px) {
  main#main > section#vision,
  main#main > section#why,
  main#main > section#where,
  main#main > section#about,
  main#main > section#contact {
    min-block-size: auto;
    padding-block: clamp(64px, 14vw, 96px) !important;
  }
}

/* =============================================================
 * === v2.3 — ZOOM-ADAPTIVE FLUID SCALING
 * 程: 缩放页面后下面段露头 → 字号/padding/装饰用 dvh 联动
 * viewport 高度变 → fluid 量跟着变 → content 始终装得下 100dvh
 * ============================================================= */

/* hero 放大, fluid 上限提高, 让 content 占主导 */
main#main > section#vision .vision-section__title {
  font-size: clamp(2.25rem, 7dvh + 0.8vw, 5.5rem) !important;
  line-height: 1.04 !important;
  letter-spacing: -0.03em !important;
}
main#main > section#vision .vision-section__lede {
  font-size: clamp(1.0625rem, 2dvh + 0.3vw, 1.4375rem) !important;
  line-height: 1.55 !important;
  margin-block-end: clamp(8px, 1.2dvh, 16px) !important;
}
main#main > section#vision .vision-section__eyebrow,
main#main > section#vision .u-mono {
  font-size: clamp(0.75rem, 1.2dvh + 0.1vw, 0.9375rem) !important;
}
main#main > section#vision .btn {
  padding: clamp(11px, 1.6dvh, 18px) clamp(18px, 2vw, 28px) !important;
  font-size: clamp(0.9375rem, 1.5dvh + 0.25vw, 1.125rem) !important;
}
main#main > section#vision .leaf-decoration--hero {
  inline-size: clamp(220px, 40dvh, 480px) !important;
}

/* why / where / about / contact — 也放大一档 */
main#main > section#why .vision-section__title,
main#main > section#where .vision-section__title,
main#main > section#about .vision-section__title,
main#main > section#contact .vision-section__title {
  font-size: clamp(1.75rem, 5dvh + 0.6vw, 3.5rem) !important;
  line-height: 1.15 !important;
  letter-spacing: -0.025em !important;
}
main#main > section#why .vision-section__lede,
main#main > section#where .vision-section__lede,
main#main > section#about .vision-section__lede,
main#main > section#contact .vision-section__lede {
  font-size: clamp(1rem, 1.85dvh + 0.3vw, 1.3125rem) !important;
  line-height: 1.55 !important;
}

/* mobile 关闭 fluid (恢复 rem 控制, 小屏 fluid 反而 jitter) */
@media (max-width: 768px) {
  main#main > section#vision .vision-section__title,
  main#main > section#why .vision-section__title,
  main#main > section#where .vision-section__title,
  main#main > section#about .vision-section__title,
  main#main > section#contact .vision-section__title {
    font-size: clamp(1.5rem, 2.5vw + 0.5rem, 2.25rem) !important;
  }
  main#main > section#vision .vision-section__lede,
  main#main > section#why .vision-section__lede,
  main#main > section#where .vision-section__lede,
  main#main > section#about .vision-section__lede,
  main#main > section#contact .vision-section__lede {
    font-size: 1rem !important;
  }
  main#main > section#vision .btn {
    padding: 12px 18px !important;
    font-size: 0.9375rem !important;
  }
}

/* === v2.4 anchor scroll-margin (dock occlusion fix) === */
html { scroll-padding-block-start: clamp(72px, 10dvh, 96px); }
main#main > section { scroll-margin-block-start: clamp(72px, 10dvh, 96px); }

/* === v2.4 CJK word-break (h1 不再劈词) === */
h1, h2, h3, .vision-section__title, .comp-doc__title { word-break: keep-all; overflow-wrap: break-word; }

/* =============================================================
 * === v2.5 — UNIFIED TYPE SCALE (Perfect Fourth 1.333)
 * 程: 每一部分字体大小不一致先修了
 * 把 v1 base / v2.0 component / v2.3 vision fluid 三套字号
 * 统一到 :root token, 同语义级别全站一致.
 * ============================================================= */
:root {
  /* type scale — Perfect Fourth 1.333 ratio · fluid via dvh+vw, capped at desktop max */
  --t-display:  clamp(2.5rem,    4.5dvh + 0.8vw, 4.5rem);    /* hero h1 主页 */
  --t-sub-hero: clamp(1.875rem,  3.2dvh + 0.6vw, 3.375rem);  /* 子页 h1 */
  --t-h2:       clamp(1.5rem,    2.4dvh + 0.5vw, 2.25rem);   /* section h2 */
  --t-h3:       clamp(1.125rem,  1.6dvh + 0.3vw, 1.5rem);    /* sub-section h3 */
  --t-lede:     clamp(1.0625rem, 1.4dvh + 0.25vw, 1.25rem);  /* lede / 导语 */
  --t-body:     1rem;                                          /* 正文 */
  --t-small:    0.875rem;                                      /* small / desc */
  --t-mono:     0.75rem;                                       /* eyebrow / mono caps */
}

/* --- hero (主页 #vision) display 字号 --- */
main#main > section#vision .vision-section__title {
  font-size: var(--t-display) !important;
  line-height: 1.06 !important;
  letter-spacing: -0.025em !important;
}

/* --- section h2 (#why #system #where #about #contact) --- */
main#main > section#why  .vision-section__title,
main#main > section#system .vision-section__title,
main#main > section#where .vision-section__title,
main#main > section#about .vision-section__title,
main#main > section#contact .vision-section__title {
  font-size: var(--t-h2) !important;
  line-height: 1.18 !important;
  letter-spacing: -0.02em !important;
}

/* --- lede / 导语 / subtitle --- */
main#main > section#vision .vision-section__lede,
main#main > section#why  .vision-section__lede,
main#main > section#system .vision-section__lede,
main#main > section#where .vision-section__lede,
main#main > section#about .vision-section__lede,
main#main > section#contact .vision-section__lede {
  font-size: var(--t-lede) !important;
  line-height: 1.6 !important;
}

/* --- 子页 comp-doc 字号统一 --- */
.comp-doc__title { font-size: var(--t-sub-hero) !important; line-height: 1.08; letter-spacing: -0.025em; }
.comp-doc__subtitle { font-size: var(--t-lede) !important; line-height: 1.55; }
.comp-doc__section-title { font-size: var(--t-h3) !important; line-height: 1.3; letter-spacing: -0.015em; }
.comp-doc__body { font-size: var(--t-body); }
.comp-doc__body p,
.comp-doc__body li { font-size: var(--t-body) !important; line-height: 1.7 !important; }

/* --- component-card 字号 --- */
.component-card__title { font-size: var(--t-h3); line-height: 1.25; }
.component-card__desc  { font-size: var(--t-small); line-height: 1.55; }

/* --- eyebrow / mono caps 统一 --- */
.vision-section__eyebrow,
.comp-doc__section-eyebrow,
.label-mono,
.mono,
.u-mono {
  font-size: var(--t-mono) !important;
  letter-spacing: 0.18em !important;
}

/* --- buttons 字号 (hero CTA 跟普通 btn 一致) --- */
main#main > section#vision .btn,
.btn { font-size: var(--t-body) !important; }

/* --- layer-band label 统一 --- */
.layer-band__label .name-cn { font-size: var(--t-h3) !important; font-weight: 500; }
.layer-band__label .num,
.layer-band__label .name-en { font-size: var(--t-mono) !important; }

/* --- mobile fallback: smaller fluid range, 避免小屏 dvh 抖 --- */
@media (max-width: 768px) {
  :root {
    --t-display:  clamp(2rem,     3vw + 1rem,    2.75rem);
    --t-sub-hero: clamp(1.75rem,  2.5vw + 0.5rem, 2.25rem);
    --t-h2:       clamp(1.375rem, 2vw + 0.4rem,  1.75rem);
    --t-h3:       1.125rem;
    --t-lede:     1rem;
    --t-body:     0.9375rem;
  }
}