/* =========================================================================
   group-04 · 湾心共生里 — supplementary component styles
   Hand-crafted to match the page's neumorphic / soft-UI system.
   Reuses the team CSS custom properties (--color-*, --shadow-*, --radius-*,
   --section-gap, --container-max, fonts) defined in index-CHvNOjsA.css.
   ========================================================================= */

:root { --lz-accent: #ff4757; }

/* Intrinsic width/height attrs on our <img>s reserve aspect-ratio (so cards never
   collapse to 0 height before a lazy image loads). Force height:auto everywhere so
   those attributes only drive the ratio, never a fixed pixel height. The pano track
   image is exempt (it is sized by height for horizontal scrolling). */
.lec-sec .g4-fig img,
.lec-sec .g4-mat img,
.lec-sec .g4-md-stage img,
.lec-sec .g4-panel-mat img { height: auto; }
/* discs fill a fixed 1:1 well via object-fit — keep them at 100% height */
.lec-sec .g4-disc-clip img { height: 100%; }

/* ---- injected <section class="lec-sec"> behaves exactly like a native .section ---- */
.lec-sec {
  padding: var(--section-gap) 0;
  border-bottom: 1px solid var(--color-border);
  position: relative;
  scroll-margin-top: 56px;     /* clear the fixed 48px nav when jumped to via #anchor */
}
.lec-sec .g4-wrap {           /* mirror of .container-page */
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 32px;
}

/* ---- native section header pattern (mono kicker → 28/800 title → dim desc) ---- */
.g4-head { margin-bottom: 40px; }
.g4-kicker {
  font-family: var(--font-mono);
  letter-spacing: .08em;
  color: var(--color-accent);
  text-transform: uppercase;
  margin-bottom: 8px;
  font-size: 11px;
  font-weight: 500;
}
.g4-title {
  letter-spacing: -.03em;
  color: var(--color-text);
  text-shadow: 0 1px 0 var(--color-border-light);
  margin-bottom: 12px;
  font-size: 28px;
  font-weight: 800;
  line-height: 1.2;
}
.g4-desc {
  color: var(--color-dim);
  max-width: 640px;
  font-size: 14px;
  font-weight: 400;
  line-height: 1.7;
}

/* small reusable mono caption used under figures */
.g4-cap {
  font-family: var(--font-mono);
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--color-dim);
  font-size: 11px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
}
.g4-cap .en { color: var(--color-border-dark); letter-spacing: .12em; }
.g4-cap .led { width: 8px; height: 8px; }

/* "⤢ 放大" zoom affordance pinned to a figure corner */
.g4-zoomtag {
  position: absolute;
  top: 14px; right: 14px;
  z-index: 3;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 11px;
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  box-shadow: var(--shadow-card);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--color-dim);
  pointer-events: none;
  opacity: .85;
  transition: color .2s ease, box-shadow .2s ease, opacity .2s ease, transform .2s ease;
}
.g4-zoomtag .ico { color: var(--color-accent); font-size: 12px; line-height: 1; }
[data-zoom]:hover .g4-zoomtag { color: var(--color-text); opacity: 1; transform: translateY(-1px); box-shadow: var(--shadow-floating); }

/* generic zoomable figure: imagery hover idiom = grayscale→0 + slight scale */
.g4-fig { position: relative; cursor: zoom-in; }
.g4-fig img { display: block; width: 100%; }
.g4-fig .g4-imgclip { overflow: hidden; border-radius: var(--radius-sm); }
.g4-fig .g4-imgclip img {
  filter: grayscale(0%);
  transition: filter .5s ease, transform .6s cubic-bezier(.175,.885,.32,1.275);
}
.g4-fig:hover .g4-imgclip img { filter: grayscale(0); transform: scale(1.03); }

/* =========================================================================
   A · 现状深化 (after #analysis) — clean SINGLE-COLUMN FULL-WIDTH stack
   Each sub-component spans the full content width, stacked vertically.
   ========================================================================= */
.g4-stack {
  display: flex;
  flex-direction: column;
  gap: 32px;                       /* consistent rhythm between full-width blocks */
}

/* generic full-width neumorphic block (card) used by 区位 / 人群 / 分层 */
.g4-block {
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 28px;
  transition: box-shadow .3s cubic-bezier(.175,.885,.32,1.275), transform .3s cubic-bezier(.175,.885,.32,1.275);
}
.g4-block:hover { box-shadow: var(--shadow-floating); transform: translateY(-4px); }
.g4-block-h {
  display: flex; align-items: center; gap: 12px;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: .06em;
  font-size: 13px; font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 22px;
}
.g4-block-h .num {
  font-size: 11px;
  background: var(--color-dark-panel);
  color: var(--color-accent);
  box-shadow: var(--shadow-recessed);
  border-radius: var(--radius-sm);
  padding: 4px 9px;
  letter-spacing: .12em;
}
.g4-block-h .en { color: var(--color-border-dark); font-weight: 500; letter-spacing: .12em; margin-left: auto; }

/* balanced split: portrait figure + descriptive info panel (no empty side gaps) */
.g4-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 32px;
  align-items: center;
}
.g4-split-fig { min-width: 0; }
.g4-split-info { min-width: 0; display: flex; flex-direction: column; gap: 18px; }
.g4-lede {
  color: var(--color-dim);
  font-size: 14px;
  line-height: 1.8;
}
.g4-lede--wide { max-width: 720px; margin-bottom: 22px; }
.g4-facts { display: flex; flex-direction: column; gap: 0; }
.g4-facts li {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 16px;
  padding: 11px 0;
  border-bottom: 1px solid var(--color-border);
}
.g4-facts li:first-child { border-top: 1px solid var(--color-border); }
.g4-facts .k {
  font-family: var(--font-mono);
  font-size: 10.5px; font-weight: 500;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--color-accent);
  flex-shrink: 0;
}
.g4-facts .v {
  font-size: 13.5px; font-weight: 600;
  color: var(--color-text);
  text-align: right;
}

/* tall framed plate — .arch-top idiom: dark 2px border + inset mat */
.g4-plate {
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 18px;
  transition: box-shadow .3s cubic-bezier(.175,.885,.32,1.275), transform .3s cubic-bezier(.175,.885,.32,1.275);
}
.g4-plate:hover { box-shadow: var(--shadow-floating); transform: translateY(-4px); }
.g4-plate .g4-mat {                 /* inset mat that the artwork sits inside */
  border: 2px solid var(--color-border-dark);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sharp), inset 0 0 0 4px var(--color-bg);
  overflow: hidden;
  background: #fff;
  position: relative;
}
.g4-plate .g4-mat img { display: block; width: 100%; }
/* a plate nested inside a balanced split gets its own zoom cursor */
.g4-split-fig.g4-plate { cursor: zoom-in; }

/* analysis card (used by the 日照 pair, section E) — .card feel + header rail */
.g4-card {
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 24px;
  transition: box-shadow .3s cubic-bezier(.175,.885,.32,1.275), transform .3s cubic-bezier(.175,.885,.32,1.275);
}
.g4-card:hover { box-shadow: var(--shadow-floating); transform: translateY(-4px); }
.g4-card-h {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: .06em;
  font-size: 12px; font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 14px;
}
.g4-card-h .num {
  font-size: 11px;
  background: var(--color-dark-panel);
  color: var(--color-accent);
  box-shadow: var(--shadow-recessed);
  border-radius: var(--radius-sm);
  padding: 3px 8px;
  letter-spacing: .12em;
}

/* full-width disc row (现状场地分层): 4 recessed round wells across */
.g4-disc-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 26px;
}
.g4-disc {
  display: flex; flex-direction: column; align-items: center; gap: 12px;
  cursor: zoom-in;
}
.g4-disc-well {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  background: var(--color-bg);
  box-shadow: var(--shadow-recessed);
  padding: 12px;
  transition: box-shadow .3s ease, transform .3s ease;
}
.g4-disc:hover .g4-disc-well { box-shadow: var(--shadow-pressed); transform: translateY(-2px); }
.g4-disc-clip {
  width: 100%; height: 100%;
  border-radius: 50%;
  overflow: hidden;
  border: 2px solid var(--color-border-dark);
  box-shadow: inset 2px 2px 5px rgba(0,0,0,.18);
}
.g4-disc-clip img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: grayscale(0%);
  transition: filter .5s ease, transform .6s cubic-bezier(.175,.885,.32,1.275);
}
.g4-disc:hover .g4-disc-clip img { filter: grayscale(0); transform: scale(1.06); }
.g4-disc-lab {
  font-family: var(--font-mono);
  font-size: 11px; font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--color-text);
  text-align: center;
  display: flex; flex-direction: column; gap: 2px;
}
.g4-disc-lab .en { color: var(--color-border-dark); font-weight: 500; letter-spacing: .1em; font-size: 9.5px; }

/* full-bleed panoramic street banner (现状街景 ~8:1) */
.g4-pano {
  position: relative;
  margin-top: 36px;
  border-radius: var(--radius-lg);
  background: var(--color-dark-panel);
  box-shadow: var(--shadow-card), inset 0 0 0 2px var(--color-border-dark);
  padding: 16px;
  overflow: hidden;
}
.g4-pano .g4-screw { position: absolute; z-index: 4; }
.g4-pano .g4-screw.tl { top: 12px; left: 12px; }
.g4-pano .g4-screw.tr { top: 12px; right: 12px; }
.g4-pano .g4-screw.bl { bottom: 12px; left: 12px; }
.g4-pano .g4-screw.br { bottom: 12px; right: 12px; }
.g4-pano-scroll {
  position: relative;
  overflow-x: auto;
  overflow-y: hidden;
  border-radius: var(--radius-sm);
  box-shadow: inset 4px 4px 10px rgba(0,0,0,.45), inset -2px -2px 6px rgba(255,255,255,.04);
  cursor: grab;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--color-border-dark) transparent;
}
.g4-pano-scroll.dragging { cursor: grabbing; }
.g4-pano-scroll::-webkit-scrollbar { height: 7px; }
.g4-pano-scroll::-webkit-scrollbar-track { background: rgba(0,0,0,.25); }
.g4-pano-scroll::-webkit-scrollbar-thumb { background: var(--color-border-dark); border-radius: 4px; }
.g4-pano-track {
  height: 200px;
  display: inline-block;
  white-space: nowrap;
}
.g4-pano-track img {
  height: 200px;
  width: auto;
  max-width: none;
  display: inline-block;
  user-select: none;
  -webkit-user-drag: none;
}
.g4-pano-label {
  position: absolute;
  left: 20px; bottom: 22px;
  z-index: 4;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: .12em;
  font-size: 11px;
  font-weight: 500;
  color: rgba(224,229,236,.85);
  display: flex; align-items: center; gap: 8px;
  pointer-events: none;
  text-shadow: 0 1px 4px rgba(0,0,0,.6);
}
.g4-pano-label .led { width: 8px; height: 8px; }
.g4-pano-hint {
  position: absolute;
  right: 20px; bottom: 22px;
  z-index: 4;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .08em;
  color: rgba(224,229,236,.5);
  pointer-events: none;
}

/* =========================================================================
   B · 生成过程 — vertical step rail (设计生成, top→bottom)
   ========================================================================= */
.g4-gen-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.62fr) minmax(0, 1fr);
  gap: 40px;
  align-items: start;
}
/* the tall image kept vertical, in a framed plate */
.g4-gen-fig {
  position: relative;
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 16px;
  cursor: zoom-in;
  transition: box-shadow .3s ease, transform .3s ease;
}
.g4-gen-fig:hover { box-shadow: var(--shadow-floating); transform: translateY(-4px); }
.g4-gen-fig .g4-mat {
  border: 2px solid var(--color-border-dark);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sharp);
  overflow: hidden;
  background: #fff;
}
.g4-gen-fig .g4-mat img { display: block; width: 100%; }

/* the step rail: numbered nodes connected by a vertical line */
.g4-rail { position: relative; padding-left: 8px; }
.g4-rail::before {            /* connecting line */
  content: "";
  position: absolute;
  left: 26px; top: 22px; bottom: 22px;
  width: 2px;
  background: linear-gradient(var(--color-border-dark), var(--color-border));
  box-shadow: inset 0 0 1px rgba(255,255,255,.6);
  border-radius: 2px;
}
.g4-step {
  position: relative;
  display: grid;
  grid-template-columns: 54px 1fr;
  gap: 18px;
  align-items: start;
  padding: 18px 0;
}
.g4-step-node {
  position: relative;
  width: 54px; height: 54px;
  border-radius: 50%;
  background: var(--color-bg);
  box-shadow: var(--shadow-card);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 16px;
  color: var(--color-text);
  z-index: 1;
  transition: box-shadow .3s ease, color .3s ease;
}
.g4-step-node .led {
  position: absolute;
  top: 6px; right: 6px;
  width: 9px; height: 9px;
}
.g4-step:hover .g4-step-node { box-shadow: var(--shadow-pressed); color: var(--color-accent); }
.g4-step-body { padding-top: 4px; }
.g4-step-body h5 {
  font-size: 16px;
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: -.01em;
  margin-bottom: 4px;
  text-shadow: 0 1px 0 var(--color-border-light);
}
.g4-step-body .en {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--color-accent);
  display: block;
  margin-bottom: 8px;
}
.g4-step-body p { color: var(--color-dim); font-size: 13.5px; line-height: 1.75; }

/* =========================================================================
   C · 专项设计分析 — master-detail (selectable LIST + large pane)  NO TABS
   ========================================================================= */
.g4-md {
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}
.g4-md-list { display: flex; flex-direction: column; gap: 14px; }
.g4-md-btn {
  width: 100%;
  text-align: left;
  border: none;
  cursor: pointer;
  background: var(--color-bg);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  padding: 16px 18px;
  display: flex; align-items: center; gap: 14px;
  transition: box-shadow .2s cubic-bezier(.175,.885,.32,1.275), transform .2s ease, color .2s ease;
  font-family: inherit;
}
.g4-md-btn .idx {
  font-family: var(--font-mono);
  font-size: 11px; font-weight: 700;
  letter-spacing: .1em;
  color: var(--color-accent);
  flex-shrink: 0;
}
.g4-md-btn .lab { display: flex; flex-direction: column; gap: 2px; }
.g4-md-btn .lab .zh {
  font-size: 14px; font-weight: 700;
  color: var(--color-text);
  letter-spacing: .01em;
}
.g4-md-btn .lab .en {
  font-family: var(--font-mono);
  font-size: 9.5px; font-weight: 500;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--color-border-dark);
}
.g4-md-btn .dot {
  margin-left: auto;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--color-border-dark);
  box-shadow: inset 1px 1px 2px rgba(0,0,0,.25);
  transition: background .2s ease, box-shadow .2s ease;
  flex-shrink: 0;
}
.g4-md-btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-floating); }
.g4-md-btn:hover .lab .zh { color: var(--color-accent); }
/* pressed / active state = recessed (selected item) */
.g4-md-btn.active {
  box-shadow: var(--shadow-pressed);
  transform: none;
}
.g4-md-btn.active .lab .zh { color: var(--color-accent); }
.g4-md-btn.active .dot {
  background: var(--color-accent);
  box-shadow: 0 0 8px 2px rgba(255,71,87,.5);
}

.g4-md-pane {
  position: relative;
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 18px;
}
.g4-md-stage {
  position: relative;
  border: 2px solid var(--color-border-dark);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sharp);
  overflow: hidden;
  background: #fff;
  cursor: zoom-in;
}
.g4-md-stage img {
  display: block;
  width: 100%;
}
.g4-md-stage .g4-frame {
  position: absolute; inset: 0;
  opacity: 0;
  animation: g4fade .45s ease forwards;
}
@keyframes g4fade { from { opacity: 0; } to { opacity: 1; } }
.g4-md-meta {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px;
  margin-top: 16px;
  flex-wrap: wrap;
}
.g4-md-meta .txt { max-width: 640px; }
.g4-md-meta .txt h5 {
  font-size: 16px; font-weight: 800; color: var(--color-text);
  margin-bottom: 4px; letter-spacing: -.01em;
}
.g4-md-meta .txt p { color: var(--color-dim); font-size: 13px; line-height: 1.7; }

/* =========================================================================
   D · 低空航线 (after #drone) & E · 日照 pair (after #viewer3d)
   ========================================================================= */
/* big single diagram card */
.g4-wide-fig {
  position: relative;
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 18px;
  cursor: zoom-in;
  transition: box-shadow .3s ease, transform .3s ease;
}
.g4-wide-fig:hover { box-shadow: var(--shadow-floating); transform: translateY(-4px); }
.g4-wide-fig .g4-mat {
  border: 2px solid var(--color-border-dark);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sharp);
  overflow: hidden;
  background: #fff;
}
.g4-wide-fig .g4-mat img { display: block; width: 100%; }

/* legend chips (for 低空 / 设施 etc.) */
.g4-legend {
  display: flex; flex-wrap: wrap;
  gap: 10px 18px;
  margin-top: 18px;
}
.g4-legend .chip {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px; font-weight: 500;
  letter-spacing: .04em;
  color: var(--color-dim);
}
.g4-legend .chip i {
  width: 12px; height: 12px;
  border-radius: 3px;
  box-shadow: inset 1px 1px 2px rgba(0,0,0,.2), 0 1px 0 rgba(255,255,255,.5);
  flex-shrink: 0;
}

/* two-up sunlight card pair */
.g4-pair {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
}
.g4-sun-note {
  margin-top: 22px;
  display: flex; align-items: center; gap: 14px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .05em;
  color: var(--color-dim);
}
/* the 0–10h gradient scale ramp */
.g4-ramp {
  display: inline-flex; align-items: center; gap: 10px;
}
.g4-ramp .bar {
  width: 180px; height: 12px;
  border-radius: 6px;
  background: linear-gradient(90deg,#1f2bff 0%,#5a2bd6 18%,#b0309a 38%,#e8472f 58%,#ff8a1e 78%,#ffd21a 92%,#ffe96b 100%);
  box-shadow: var(--shadow-recessed);
}
.g4-ramp .tick { color: var(--color-border-dark); }

/* =========================================================================
   F · 成果展板 (final panel, very end)
   ========================================================================= */
.g4-panel-sec { text-align: center; }
.g4-panel-frame {
  position: relative;
  display: inline-block;
  max-width: 720px;
  width: 100%;
  margin: 8px auto 0;
  background: var(--color-bg);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-floating);
  padding: 22px;
  cursor: zoom-in;
  transition: transform .35s cubic-bezier(.175,.885,.32,1.275), box-shadow .35s ease;
}
.g4-panel-frame:hover { transform: translateY(-6px); }
.g4-panel-screw { position: absolute; z-index: 5; width: 12px; height: 12px; }
.g4-panel-screw.tl { top: 14px; left: 14px; }
.g4-panel-screw.tr { top: 14px; right: 14px; }
.g4-panel-screw.bl { bottom: 14px; left: 14px; }
.g4-panel-screw.br { bottom: 14px; right: 14px; }
.g4-panel-mat {
  position: relative;
  border: 2px solid var(--color-border-dark);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sharp), inset 0 0 0 6px var(--color-bg);
  overflow: hidden;
  background: #fff;
}
.g4-panel-mat img { display: block; width: 100%; filter: grayscale(0%); transition: filter .5s ease; }
.g4-panel-frame:hover .g4-panel-mat img { filter: grayscale(0); }
.g4-panel-cta {
  position: absolute;
  left: 50%; bottom: 34px;
  transform: translateX(-50%);
  z-index: 6;
  display: inline-flex; align-items: center; gap: 9px;
  padding: 11px 22px;
  border-radius: var(--radius-md);
  background: var(--color-accent);
  color: var(--color-accent-fg);
  box-shadow: 4px 4px 8px #a6323c59, -4px -4px 8px #ff646e40, inset 0 0 0 1px #fff3;
  font-family: var(--font-mono);
  font-size: 12px; font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  pointer-events: none;
  transition: filter .2s ease, transform .2s ease;
}
.g4-panel-frame:hover .g4-panel-cta { filter: brightness(1.08); transform: translateX(-50%) translateY(-2px); }

/* =========================================================================
   Responsive
   ========================================================================= */
@media (max-width: 1024px) {
  .g4-disc-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 900px) {
  .g4-split { grid-template-columns: 1fr; gap: 24px; }
  .g4-block-h .en { margin-left: 0; }   /* let kicker wrap cleanly */
  .g4-gen-grid { grid-template-columns: 1fr; gap: 28px; }
  .g4-md { grid-template-columns: 1fr; gap: 24px; }
  .g4-md-list { flex-direction: row; flex-wrap: wrap; }
  .g4-md-btn { width: auto; flex: 1 1 calc(50% - 7px); }
  .g4-pair { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .lec-sec { padding: 64px 0; }
  .lec-sec .g4-wrap { padding: 0 20px; }
  .g4-title { font-size: 22px; }
  .g4-block { padding: 22px; }
  .g4-block-h { flex-wrap: wrap; }
  .g4-pano-track, .g4-pano-track img { height: 150px; }
}
@media (max-width: 560px) {
  .g4-disc-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .g4-md-btn { flex: 1 1 100%; }
  .g4-md-meta { flex-direction: column; align-items: flex-start; }
  .g4-step { grid-template-columns: 46px 1fr; gap: 14px; }
  .g4-step-node { width: 46px; height: 46px; font-size: 14px; }
  .g4-rail::before { left: 22px; }
  .g4-facts li { flex-direction: column; align-items: flex-start; gap: 3px; }
  .g4-facts .v { text-align: left; }
}

/* removed per request: 更新策略 / 场地规划 section */
#strategy{display:none!important}
nav a[href="#strategy"]{display:none!important}

/* zoning rework: 现状图 ←slider→ 规划图 */
#zoning label{display:none!important}
#zoning .lec-zctrl{display:flex;align-items:center;justify-content:flex-start;gap:14px;margin-top:14px;font-size:13px;color:var(--color-dim,var(--dim,#777))}
#zoning .lec-zctrl .lec-zend{font-weight:600;white-space:nowrap;color:var(--color-text,var(--text,#222))}
#zoning .lec-zctrl .lec-zslider{width:280px;max-width:72%;accent-color:var(--color-accent,var(--accent,#c0564e))}