/* inpatch.reelx.org — Darkroom Proof Bench & Editorial Product Philosophy */
/* Self-hosted SIL OFL-1.1 WOFF2 subsets for Korean (Hangul) & Hindi (Devanagari) on bare Linux / web clients */
@font-face {
  font-family: "Noto Sans Devanagari";
  font-style: normal;
  font-weight: 400 560;
  font-display: swap;
  src: url("../fonts/noto-sans-devanagari-400.woff2") format("woff2");
  unicode-range: U+0900-097F, U+1CD0-1CF9, U+200C-200D, U+20B9, U+25CC, U+A830-A839, U+A8E0-A8FF;
}
@font-face {
  font-family: "Noto Sans Devanagari";
  font-style: normal;
  font-weight: 561 800;
  font-display: swap;
  src: url("../fonts/noto-sans-devanagari-600.woff2") format("woff2");
  unicode-range: U+0900-097F, U+1CD0-1CF9, U+200C-200D, U+20B9, U+25CC, U+A830-A839, U+A8E0-A8FF;
}
@font-face {
  font-family: "Noto Sans KR";
  font-style: normal;
  font-weight: 400 560;
  font-display: swap;
  src: url("../fonts/noto-sans-kr-400.woff2") format("woff2");
  unicode-range: U+1100-11FF, U+3130-318F, U+A960-A97F, U+AC00-D7AF, U+D7B0-D7FF;
}
@font-face {
  font-family: "Noto Sans KR";
  font-style: normal;
  font-weight: 561 800;
  font-display: swap;
  src: url("../fonts/noto-sans-kr-600.woff2") format("woff2");
  unicode-range: U+1100-11FF, U+3130-318F, U+A960-A97F, U+AC00-D7AF, U+D7B0-D7FF;
}

:root {
  --bg: #0c0d0f;
  --bg-raised: #131519;
  --bg-sunk: #08090b;
  --surface: #171a1f;
  --surface-2: #1f232a;
  --line: rgba(236, 232, 225, 0.09);
  --line-strong: rgba(236, 232, 225, 0.21);
  --text: #ece8e1;
  --text-2: #c2bdb4;
  --text-3: #8b877f;
  --accent-editorial: #d4e48b;
  --mask: #e25c9e;
  --ring: #46c7d6;
  --guard: #e9b14a;
  --pass: #6bd49a;
  --fail: #ff6b5a;
  --cta-bg: #d4e48b;
  --cta-fg: #0c0d0f;
  --focus: #6bd49a;

  --font-sans: "Noto Sans KR", "Noto Sans Devanagari", "Inter", "Söhne", system-ui, -apple-system, "Segoe UI", "Helvetica Neue", "PingFang SC", "PingFang TC", "Hiragino Sans", "Hiragino Sans GB", "Apple SD Gothic Neo", "Malgun Gothic", "Nirmala UI", "Kohinoor Devanagari", "Geeza Pro", "Noto Sans CJK SC", "Noto Sans JP", "Noto Sans Arabic", "Microsoft YaHei", sans-serif;
  --font-serif: "Noto Sans KR", "Noto Sans Devanagari", Georgia, "Iowan Old Style", "Palatino Linotype", "Times New Roman", "Songti SC", "STSong", "Noto Serif CJK SC", "Microsoft YaHei", serif;
  --font-mono: "Noto Sans KR", "Noto Sans Devanagari", "SF Mono", "JetBrains Mono", "Cascadia Mono", Menlo, Consolas, "DejaVu Sans Mono", "Microsoft YaHei", ui-monospace, monospace;

  --fs-micro: 0.6875rem;
  --fs-xs: 0.75rem;
  --fs-sm: 0.875rem;
  --fs-base: 1rem;
  --fs-md: 1.0625rem;
  --fs-lg: 1.25rem;
  --fs-xl: clamp(1.35rem, 1.05rem + 0.9vw, 1.75rem);
  --fs-2xl: clamp(1.8rem, 1.2rem + 2.1vw, 2.75rem);
  --fs-hero: clamp(2.4rem, 1.35rem + 3.1vw, 3.95rem);
  --track-display: -0.032em;

  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-5: 22px;
  --sp-6: 30px;
  --sp-7: 44px;
  --sp-8: 64px;
  --sp-9: 104px;
  --gutter: clamp(18px, 3.6vw, 48px);
  --page-max: 1320px;

  --r-xs: 4px;
  --r-sm: 7px;
  --r-md: 12px;
  --r-lg: 16px;
  --r-pill: 999px;
  --ease: cubic-bezier(0.2, 0.7, 0.1, 1);
  --dur: 190ms;
}
:root:is(:lang(zh-CN), :lang(zh-Hant), :lang(ja), :lang(ko)) { --track-display: -0.015em; }

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 76px; color-scheme: dark; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 400 var(--fs-base)/1.58 var(--font-sans);
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; overflow-x: clip;
}
:is(:lang(zh-CN), :lang(zh-Hant), :lang(ja), :lang(ko)) body,
body:is(:lang(zh-CN), :lang(zh-Hant), :lang(ja), :lang(ko)) { line-height: 1.7; line-break: strict; }
.no-orphan { white-space: nowrap; font: inherit; color: inherit; letter-spacing: inherit; }
img, svg, canvas { display: block; max-width: 100%; }
a { color: inherit; text-underline-offset: 0.2em; }
button { font: inherit; color: inherit; }
h1, h2, h3, p, dl, dd, ol, ul, figure { margin: 0; }
ol, ul { padding: 0; list-style: none; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 3px; border-radius: var(--r-xs); }
::selection { background: var(--accent-editorial); color: var(--bg); }

.fatal {
  position: fixed; inset: auto var(--sp-4) var(--sp-4) var(--sp-4); z-index: 999; display: grid; gap: var(--sp-2);
  padding: var(--sp-4) var(--sp-5); background: #2a0d0a; color: #ffd6cf; border: 1px solid var(--fail); border-radius: var(--r-md);
  font: 500 var(--fs-sm)/1.5 var(--font-mono);
}
.skip { position: absolute; left: var(--sp-4); top: -60px; z-index: 100; background: var(--text); color: var(--bg); padding: var(--sp-2) var(--sp-4); border-radius: var(--r-sm); }
.skip:focus { top: var(--sp-4); }
.wrap { width: min(100% - 2 * var(--gutter), var(--page-max)); margin-inline: auto; }
.kicker { font: 500 var(--fs-xs)/1.4 var(--font-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent-editorial); }
:lang(zh-CN) .kicker { letter-spacing: 0.04em; }

/* ---------- Topbar ---------- */
.topbar { position: sticky; top: 0; z-index: 40; background: color-mix(in srgb, var(--bg) 84%, transparent); backdrop-filter: blur(14px) saturate(1.3); -webkit-backdrop-filter: blur(14px) saturate(1.3); border-bottom: 1px solid var(--line); }
.topbar .wrap { display: flex; align-items: center; gap: var(--sp-4); height: 60px; }
.logo { display: flex; align-items: center; gap: var(--sp-3); text-decoration: none; min-width: 0; }
.logo svg { width: 30px; height: 30px; flex: none; }
.logo__name { font: 650 var(--fs-md)/1 var(--font-sans); letter-spacing: -0.02em; white-space: nowrap; }
.logo__by { font: 400 var(--fs-micro)/1 var(--font-mono); color: var(--text-3); letter-spacing: 0.06em; text-transform: uppercase; white-space: nowrap; }
.logo__text { display: grid; gap: 4px; }
.topnav { margin-left: auto; display: flex; gap: 2px; }
.topnav a { font-size: var(--fs-sm); color: var(--text-2); text-decoration: none; padding: var(--sp-2) 10px; border-radius: var(--r-pill); transition: color var(--dur) var(--ease), background var(--dur) var(--ease); white-space: nowrap; }
.topnav a:hover { color: var(--text); background: var(--surface); }
.lang-switch { display: inline-flex; align-items: center; gap: 2px; padding: 3px; border: 1px solid var(--line-strong); border-radius: var(--r-pill); flex: none; background: rgba(19, 21, 25, 0.72); }
.lang-switch button { border: 0; background: transparent; cursor: pointer; padding: 6px 11px; border-radius: var(--r-pill); font: 650 var(--fs-xs)/1 var(--font-sans); color: var(--text-3); min-width: 40px; transition: background var(--dur) var(--ease), color var(--dur) var(--ease); }
.lang-switch button[aria-pressed="true"] { background: var(--text); color: var(--bg); }
.lang-more {
  appearance: none;
  -webkit-appearance: none;
  border: 0;
  border-inline-start: 1px solid var(--line);
  border-radius: var(--r-pill);
  background-color: transparent;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' fill='none' stroke='%238b877f' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 9px center;
  color: var(--text-2);
  font: 650 var(--fs-xs)/1.1 var(--font-sans);
  padding: 5px 24px 5px 9px;
  max-width: 132px;
  cursor: pointer;
}
.lang-more option { background: #131519; color: #ece8e1; }
.lang-more[data-active-extra="true"] {
  background-color: var(--text);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' fill='none' stroke='%230c0d0f' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  color: var(--bg);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--sp-2); min-height: 42px; padding: 0 var(--sp-5);
  border-radius: var(--r-sm); border: 1px solid var(--line-strong); background: rgba(23, 26, 31, 0.55); color: var(--text);
  font: 650 var(--fs-sm)/1.2 var(--font-sans); text-decoration: none; cursor: pointer; text-align: center;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease), transform var(--dur) var(--ease), color var(--dur) var(--ease);
}
.btn:hover { border-color: var(--text); background: var(--surface-2); }
.btn:active { transform: translateY(1px); }
.btn--solid { background: var(--cta-bg); color: var(--cta-fg); border-color: var(--cta-bg); }
.btn--solid:hover { background: #e3f09e; border-color: #e3f09e; color: #08090b; }
.btn .dot { width: 7px; height: 7px; border-radius: 50%; background: #0c0d0f; }

/* ---------- Hero (Screen 1 Philosophy + Multi-Client + Dynamic Live Stage) ---------- */
.hero { position: relative; overflow: hidden; border-bottom: 1px solid var(--line); }
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(52% 55% at 18% 8%, rgba(212, 228, 139, 0.09), transparent 72%),
    radial-gradient(48% 50% at 85% 12%, rgba(107, 212, 154, 0.08), transparent 70%),
    radial-gradient(40% 45% at 65% 95%, rgba(233, 177, 74, 0.07), transparent 70%);
}
.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.08fr);
  gap: var(--sp-6);
  padding-block: 20px var(--sp-5);
  align-items: start;
}
.hero-copy { display: grid; gap: 12px; min-width: 0; }
.hero-head { display: grid; gap: 10px; min-width: 0; }
.hero-detail { display: grid; gap: 11px; min-width: 0; }
.hero-badges { display: flex; flex-wrap: wrap; align-items: center; gap: var(--sp-2); }
.badge { display: inline-flex; align-items: center; gap: var(--sp-2); padding: 4px 11px 4px 7px; border: 1px solid var(--line-strong); border-radius: var(--r-pill); font: 500 var(--fs-xs)/1.3 var(--font-mono); color: var(--accent-editorial); background: rgba(23, 26, 31, 0.72); letter-spacing: 0.02em; }
.badge i { width: 15px; height: 15px; border-radius: 50%; display: grid; place-items: center; background: rgba(212, 228, 139, 0.14); }
.badge i::after { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--accent-editorial); }
.contract-pill {
  display: inline-flex; align-items: center; padding: 4px 10px; border-radius: var(--r-pill);
  font: 700 var(--fs-micro)/1.2 var(--font-mono); letter-spacing: 0.06em;
  color: var(--pass); background: rgba(107, 212, 154, 0.12); border: 1px solid rgba(107, 212, 154, 0.34);
}

/* Fix descender/ascender collision: comfortable line-height >= 1.15 EN, >= 1.22 ZH */
.hero-display {
  margin-top: 2px;
  font: 620 var(--fs-hero)/1.16 var(--font-sans);
  letter-spacing: var(--track-display);
  color: var(--text);
}
.hero-display span.hd-lead {
  display: block;
  padding-bottom: 0.03em;
}
.hero-display em {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  color: var(--accent-editorial);
  letter-spacing: -0.012em;
  padding-right: 0.04em;
}
:is(:lang(zh-CN), :lang(zh-Hant), :lang(ja), :lang(ko)) .hero-display {
  font-size: clamp(2.15rem, 1.25rem + 2.85vw, 3.55rem);
  line-height: 1.22;
}
:is(:lang(zh-CN), :lang(zh-Hant), :lang(ja), :lang(ko)) .hero-display em {
  font-style: normal;
  font-weight: 650;
  color: var(--accent-editorial);
}

.hero-headline {
  font: 650 clamp(1.04rem, 0.94rem + 0.36vw, 1.18rem)/1.36 var(--font-sans);
  letter-spacing: -0.012em;
  color: var(--text);
  max-width: 48ch;
  text-wrap: balance;
}
.hero .sub {
  max-width: 58ch;
  font-size: 0.845rem;
  color: var(--text-2);
  line-height: 1.56;
  text-wrap: pretty;
}

/* Compact 2x2 Persona Hook Pills in Screen 1 */
.persona-tags {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
}
.persona-tag {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 6px 10px;
  border-radius: var(--r-xs);
  border: 1px solid var(--line);
  background: rgba(19, 21, 25, 0.72);
  text-decoration: none;
  min-width: 0;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.persona-tag:hover {
  border-color: var(--accent-editorial);
  background: var(--surface);
}
.persona-tag__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--pass);
  flex: none;
}
.persona-tag:nth-child(1) .persona-tag__dot { background: var(--accent-editorial); }
.persona-tag:nth-child(2) .persona-tag__dot { background: var(--ring); }
.persona-tag:nth-child(4) .persona-tag__dot { background: var(--guard); }
.persona-tag strong {
  font: 650 11.5px/1.25 var(--font-sans);
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* 3-Step Product Philosophy Strip */
.flow-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 7px;
}
.flow-step {
  display: grid;
  gap: 3px;
  align-content: start;
  padding: 9px 10px;
  border-radius: var(--r-sm);
  border: 1px solid var(--line);
  background: rgba(19, 21, 25, 0.85);
  min-width: 0;
}
.flow-step__no {
  font: 700 10px/1 var(--font-mono);
  color: var(--accent-editorial);
  letter-spacing: 0.08em;
}
.flow-step strong {
  font: 650 var(--fs-xs)/1.28 var(--font-sans);
  color: var(--text);
}
.flow-step__detail {
  font-size: 10.5px;
  line-height: 1.38;
  color: var(--text-3);
}

.hero .ctas { display: flex; flex-wrap: wrap; gap: var(--sp-3); }

/* Screen-1 Full Multi-Client Ecosystem Strip */
.client-strip {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
  gap: var(--sp-2);
  padding-top: 10px;
  border-top: 1px solid var(--line);
}
.client-group {
  display: grid;
  gap: 5px;
  padding: 8px 11px;
  border-radius: var(--r-sm);
  border: 1px solid var(--line);
  background: var(--bg-sunk);
  min-width: 0;
}
.client-group--touch {
  border-style: dashed;
  border-color: var(--line-strong);
  background: rgba(19, 21, 25, 0.45);
}
.client-group__head {
  display: flex;
  align-items: center;
  gap: 6px;
  font: 600 10px/1.2 var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-3);
}
.dot-live, .dot-plan { width: 7px; height: 7px; border-radius: 50%; flex: none; }
.dot-live { background: var(--pass); box-shadow: 0 0 0 3px rgba(107, 212, 154, 0.18); }
.dot-plan { border: 1.5px solid var(--guard); background: transparent; }
.client-badges { display: flex; flex-wrap: wrap; gap: 5px; }
.client-chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 7px;
  border-radius: var(--r-xs);
  background: var(--surface);
  border: 1px solid var(--line);
  font: 550 11.5px/1.1 var(--font-sans);
  color: var(--text);
  white-space: nowrap;
}
.client-chip svg { width: 12px; height: 12px; flex: none; }
.client-chip svg .p-line { fill: none; stroke: var(--text-2); stroke-width: 1.7; }

/* Right Column: Interactive Hero Stage + Multi-Client UI Previews */
.hero-visual { display: grid; gap: 10px; min-width: 0; }
.stage-card-shell {
  border-radius: var(--r-md);
  border: 1px solid var(--line-strong);
  background: var(--bg-raised);
  overflow: hidden;
  box-shadow: 0 24px 70px -28px rgba(0, 0, 0, 0.85);
}
.stage-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 8px;
  padding: 8px 11px;
  border-bottom: 1px solid var(--line);
  background: var(--bg-sunk);
}
.win-dots { display: inline-flex; gap: 5px; }
.win-dots i { width: 8px; height: 8px; border-radius: 50%; background: rgba(236, 232, 225, 0.18); }
.stage-bar__title {
  font: 500 10.5px/1.2 var(--font-mono);
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-right: auto;
}
.stage-tools {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.auto-pill {
  border: 1px solid var(--line-strong);
  background: var(--surface);
  color: var(--text-2);
  border-radius: var(--r-pill);
  padding: 4px 9px;
  font: 600 10.5px/1.1 var(--font-mono);
  cursor: pointer;
  white-space: nowrap;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.auto-pill:hover { color: var(--text); border-color: var(--text-2); }
.auto-pill[aria-pressed="true"] {
  color: var(--pass);
  border-color: rgba(107, 212, 154, 0.42);
  background: rgba(107, 212, 154, 0.1);
}
.auto-pill#hero-crop-btn[aria-pressed="true"] {
  color: var(--guard);
  border-color: rgba(233, 177, 74, 0.45);
  background: rgba(233, 177, 74, 0.11);
}

.scene-tabs {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 3px;
  padding: 2px;
  border-radius: var(--r-pill);
  background: var(--surface);
  border: 1px solid var(--line);
}
.scene-tabs button {
  border: 0;
  background: transparent;
  padding: 5px 10px;
  border-radius: var(--r-pill);
  cursor: pointer;
  font: 600 var(--fs-micro)/1.1 var(--font-sans);
  color: var(--text-2);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
  white-space: nowrap;
}
.scene-tabs button:hover { color: var(--text); }
.scene-tabs button[aria-selected="true"] {
  background: var(--accent-editorial);
  color: #0c0d0f;
}
.scene-tabs--lg button {
  padding: 8px 15px;
  font-size: var(--fs-xs);
}

/* True uncropped 1376x768 aspect ratio + full 0%..100% split reveal */
.hero-compare {
  position: relative;
  aspect-ratio: var(--scene-aspect, 1376 / 768);
  width: 100%;
  background: var(--bg-sunk);
  overflow: hidden;
  cursor: ew-resize;
  touch-action: pan-y;
  user-select: none;
  -webkit-user-select: none;
}
.hero-compare .hc-img,
.hero-compare .hc-after-wrap,
.hero-compare .hero-cue-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}
.hero-compare .hc-img {
  object-fit: contain;
  -webkit-user-drag: none;
}
.hero-compare .hc-after-wrap {
  clip-path: inset(0 0 0 var(--hero-split, 31%));
}
.hero-cue-svg {
  pointer-events: none;
  z-index: 2;
  transition: opacity 220ms var(--ease);
}
.hero-compare[data-crop-cue="off"] .hero-cue-svg {
  opacity: 0;
}
.hero-cue-svg .hc-crop-box {
  fill: rgba(233, 177, 74, 0.06);
  stroke: var(--guard);
  stroke-width: 2.4;
  stroke-dasharray: 8 5;
}
.hero-cue-svg .hc-crop-corner {
  fill: none;
  stroke: #fff;
  stroke-width: 3.6;
}
.hero-cue-svg .hc-crop-label-bg {
  fill: rgba(8, 9, 11, 0.86);
  stroke: rgba(233, 177, 74, 0.65);
  stroke-width: 1.2;
}
.hero-cue-svg .hc-crop-label {
  font: 700 16px/1 var(--font-mono);
  fill: var(--guard);
}
.hero-cue-svg .hc-local-label-bg {
  fill: rgba(8, 9, 11, 0.84);
  stroke: rgba(107, 212, 154, 0.52);
  stroke-width: 1.2;
}
.hero-cue-svg .hc-local-label {
  font: 700 15px/1 var(--font-mono);
  fill: var(--pass);
}

.hero-story-pill {
  position: absolute;
  left: 10px;
  bottom: 10px;
  right: 10px;
  width: fit-content;
  max-width: calc(100% - 20px);
  z-index: 3;
  padding: 5px 10px;
  border-radius: var(--r-pill);
  background: rgba(8, 9, 11, 0.82);
  border: 1px solid rgba(212, 228, 139, 0.32);
  font: 600 11px/1.25 var(--font-mono);
  color: var(--accent-editorial);
  pointer-events: none;
  backdrop-filter: blur(6px);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tag {
  position: absolute;
  top: 10px;
  z-index: 3;
  padding: 4px 9px;
  border-radius: var(--r-xs);
  background: rgba(8, 9, 11, 0.78);
  border: 1px solid rgba(236, 232, 225, 0.15);
  font: 600 var(--fs-micro)/1.2 var(--font-mono);
  letter-spacing: 0.04em;
  color: var(--text);
  pointer-events: none;
  backdrop-filter: blur(6px);
  transition: opacity 160ms var(--ease);
}
.tag--l { left: 10px; }
.tag--r { right: 10px; }
.tag--pass { color: var(--pass); border-color: rgba(107, 212, 154, 0.36); }
.hero-compare[data-edge="left"] .tag--l { opacity: 0.18; }
.hero-compare[data-edge="right"] .tag--r { opacity: 0.18; }

.stage-caption {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--sp-3);
  align-items: center;
  padding: 10px 13px;
  border-top: 1px solid var(--line);
  background: var(--bg-raised);
}
.stage-caption__title {
  font: 650 var(--fs-sm)/1.28 var(--font-sans);
  color: var(--text);
}
.stage-caption__sum {
  margin-top: 2px;
  font-size: var(--fs-xs);
  color: var(--text-2);
  line-height: 1.42;
}
.stage-jump {
  padding: 6px 11px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line-strong);
  background: var(--bg-sunk);
  font: 600 var(--fs-micro)/1.1 var(--font-mono);
  color: var(--accent-editorial);
  text-decoration: none;
  white-space: nowrap;
}
.stage-jump:hover { border-color: var(--accent-editorial); }

.client-previews {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
  gap: 10px;
}
.client-shot {
  display: grid;
  gap: 6px;
  padding: 8px;
  border-radius: var(--r-sm);
  border: 1px solid var(--line);
  background: var(--bg-raised);
  cursor: zoom-in;
  text-align: left;
  min-width: 0;
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.client-shot:hover { border-color: var(--line-strong); transform: translateY(-1px); }
.client-shot--touch { border-style: dashed; }
.client-shot__head {
  display: flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
}
.client-shot__head strong {
  font: 650 var(--fs-xs)/1.2 var(--font-sans);
  color: var(--text);
  white-space: nowrap;
}
.client-shot__head em {
  margin-left: auto;
  font: 500 var(--fs-micro)/1.1 var(--font-mono);
  font-style: normal;
  color: var(--text-3);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
/* Preserve exact screenshot aspect ratio without cropping or squashing */
.client-shot img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: contain;
  border-radius: var(--r-xs);
  border: 1px solid var(--line);
  background: var(--bg-sunk);
}

/* ---------- Four Persona / Pain-Point Value Pillars Band ---------- */
.pillars-band {
  position: relative;
  padding-block: var(--sp-4) var(--sp-7);
  border-top: 1px solid var(--line);
}
.pillars-kicker {
  margin-bottom: var(--sp-3);
}
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--sp-3);
}
.pillar-card {
  display: grid;
  align-content: start;
  gap: 8px;
  padding: 18px;
  border-radius: var(--r-md);
  border: 1px solid var(--line);
  background: rgba(19, 21, 25, 0.88);
  min-width: 0;
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.pillar-card:hover {
  border-color: var(--line-strong);
  transform: translateY(-2px);
}
.pillar-card__tag {
  justify-self: start;
  padding: 3px 8px;
  border-radius: var(--r-xs);
  font: 700 10.5px/1.2 var(--font-mono);
  letter-spacing: 0.06em;
  color: var(--accent-editorial);
  background: rgba(212, 228, 139, 0.11);
  border: 1px solid rgba(212, 228, 139, 0.26);
}
.pillar-card:nth-child(2) .pillar-card__tag {
  color: var(--ring);
  background: rgba(70, 199, 214, 0.11);
  border-color: rgba(70, 199, 214, 0.3);
}
.pillar-card:nth-child(3) .pillar-card__tag {
  color: var(--pass);
  background: rgba(107, 212, 154, 0.11);
  border-color: rgba(107, 212, 154, 0.32);
}
.pillar-card:nth-child(4) .pillar-card__tag {
  color: var(--guard);
  background: rgba(233, 177, 74, 0.11);
  border-color: rgba(233, 177, 74, 0.32);
}
.pillar-card h3 {
  font: 620 var(--fs-base)/1.32 var(--font-sans);
  color: var(--text);
  letter-spacing: -0.01em;
}
.pillar-card p {
  font-size: 0.835rem;
  line-height: 1.54;
  color: var(--text-2);
}

/* ---------- Sections ---------- */
.section { padding-block: var(--sp-9) 0; }
.sec-head { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 0.88fr); gap: var(--sp-4) var(--sp-8); align-items: end; margin-bottom: var(--sp-6); }
.sec-head--sub { margin-top: var(--sp-8); }
.sec-head h2 { margin-top: var(--sp-2); font: 650 var(--fs-2xl)/1.12 var(--font-sans); letter-spacing: var(--track-display); text-wrap: balance; }
:lang(zh-CN) .sec-head h2 { line-height: 1.24; }
.sec-head p.lede { color: var(--text-2); font-size: var(--fs-sm); text-wrap: pretty; }

/* ---------- Proof Bench (#proof) ---------- */
.proof-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
  margin-bottom: var(--sp-4);
}
.scene-prov {
  font: 500 var(--fs-xs)/1.4 var(--font-mono);
  color: var(--text-3);
}
.proof { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: var(--sp-5); align-items: start; }
.proof-left { min-width: 0; }
.proof-stage {
  position: relative;
  aspect-ratio: var(--proof-aspect, 1376 / 768);
  max-height: 680px;
  margin-inline: auto;
  border-radius: var(--r-md);
  overflow: hidden;
  border: 1px solid var(--line-strong);
  background: var(--bg-sunk);
  cursor: ew-resize;
  touch-action: pan-y;
  user-select: none;
  -webkit-user-select: none;
}
.proof-stage canvas#cv-before,
.proof-stage .layer,
.proof-stage .layer canvas#cv-after,
.proof-stage svg.overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.proof-stage .layer { clip-path: inset(0 0 0 var(--split, 31%)); }
.proof-stage .busy[hidden] { display: none; }
.proof-stage .busy {
  position: absolute; inset: 0; z-index: 6; display: grid; place-items: center;
  background: rgba(8, 9, 11, 0.72); backdrop-filter: blur(4px);
  font: 500 var(--fs-xs)/1 var(--font-mono); color: var(--accent-editorial);
}

/* Separate exact 0%..100% split line from clamped knob so 0% & 100% are 100% reachable and unclipped */
.split-line {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 1.5px;
  margin-left: -0.75px;
  background: var(--text);
  box-shadow: 0 0 0 0.5px rgba(0, 0, 0, 0.55);
  z-index: 4;
  pointer-events: none;
}
#hero-split-line { left: var(--hero-split, 31%); }
#proof-split-line { left: var(--split, 31%); }

.split-handle {
  position: absolute;
  top: 0;
  bottom: 0;
  left: clamp(19px, var(--split, 31%), calc(100% - 19px));
  width: 44px;
  margin-left: -22px;
  z-index: 4;
  display: grid;
  place-items: center;
  cursor: ew-resize;
  outline: none;
}
#hero-split-handle {
  left: clamp(19px, var(--hero-split, 31%), calc(100% - 19px));
}
.split-handle span {
  position: relative; display: grid; place-items: center; width: 36px; height: 36px; border-radius: 50%;
  background: var(--text); color: var(--bg); font: 700 12px/1 var(--font-mono); box-shadow: 0 6px 18px rgba(0, 0, 0, 0.5);
  transition: transform var(--dur) var(--ease);
}
.split-handle:hover span, .proof-stage.is-dragging .split-handle span, .hero-compare.is-dragging .split-handle span { transform: scale(1.08); }
.split-handle:focus-visible span { outline: 2px solid var(--focus); outline-offset: 3px; }

/* 4x Pixel Seam Loupe */
.loupe {
  position: absolute;
  right: var(--sp-3);
  bottom: var(--sp-3);
  z-index: 5;
  width: 192px;
  border-radius: var(--r-sm);
  border: 1px solid var(--line-strong);
  background: rgba(8, 9, 11, 0.9);
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.65);
  overflow: hidden;
  pointer-events: none;
}
.loupe[hidden] { display: none; }
.loupe canvas {
  width: 192px;
  height: 136px;
  image-rendering: pixelated;
  display: block;
}
.loupe__cap {
  display: block;
  padding: 5px 8px;
  border-top: 1px solid var(--line);
  font: 600 10px/1.2 var(--font-mono);
  color: var(--text-2);
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

svg.overlay { pointer-events: none; z-index: 3; }
svg.overlay text { font: 600 14px/1 var(--font-mono); letter-spacing: 0.02em; }
svg.overlay .ov-mask { fill: rgba(226, 92, 158, 0.13); stroke: var(--mask); stroke-width: 2.3; stroke-dasharray: 8 5; stroke-linecap: round; stroke-linejoin: round; }
svg.overlay .ov-guard { fill: url(#guard-hatch); stroke: var(--guard); stroke-width: 1.6; fill-rule: evenodd; }
svg.overlay .ov-crop { fill: none; stroke: #fff; stroke-width: 1.6; }
svg.overlay .ov-corner { fill: none; stroke: #fff; stroke-width: 4; }
svg.overlay .ov-loupe-pin { fill: none; stroke: var(--pass); stroke-width: 2; }
svg.overlay .t-mask { fill: var(--mask); }
svg.overlay .t-guard { fill: var(--guard); }
svg.overlay .t-crop { fill: #fff; }
svg.overlay .halo { paint-order: stroke; stroke: rgba(8, 9, 11, 0.82); stroke-width: 3.5px; stroke-linejoin: round; }
.proof-stage[data-hide~="mask"] .g-mask,
.proof-stage[data-hide~="guard"] .g-guard,
.proof-stage[data-hide~="crop"] .g-crop { display: none; }

.sw-mask { background: var(--mask); }
.sw-guard { background: var(--guard); }
.sw-crop { background: #fff; }
.sw-pass { background: var(--pass); }

.panel { display: grid; gap: var(--sp-4); padding: var(--sp-5); border: 1px solid var(--line); border-radius: var(--r-md); background: var(--bg-raised); min-width: 0; }
.ctrl { display: grid; gap: var(--sp-2); }
.ctrl > span { font: 500 var(--fs-micro)/1.2 var(--font-mono); letter-spacing: 0.07em; text-transform: uppercase; color: var(--text-3); }
.seg { display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; padding: 3px; gap: 3px; border-radius: var(--r-sm); background: var(--bg-sunk); border: 1px solid var(--line); }
.seg button { border: 0; background: transparent; padding: 8px 8px; border-radius: 4px; cursor: pointer; font: 650 var(--fs-xs)/1.2 var(--font-sans); color: var(--text-3); transition: background var(--dur) var(--ease), color var(--dur) var(--ease); }
.seg button[aria-pressed="true"] { background: var(--surface-2); color: var(--text); box-shadow: inset 0 0 0 1px var(--line-strong); }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip-toggle { display: inline-flex; align-items: center; gap: 6px; border: 1px solid var(--line-strong); background: transparent; border-radius: var(--r-pill); padding: 6px 10px; cursor: pointer; font: 650 var(--fs-micro)/1 var(--font-sans); color: var(--text-2); }
.chip-toggle i { width: 9px; height: 9px; border-radius: 2px; }
.chip-toggle[aria-pressed="false"] { opacity: 0.45; }
.chip-toggle[aria-pressed="false"] i { background: transparent !important; box-shadow: inset 0 0 0 1px currentColor; }
.readouts { display: grid; gap: 0; border-top: 1px solid var(--line); }
.readouts > div { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: var(--sp-3); padding: 8px 0; border-bottom: 1px solid var(--line); align-items: baseline; }
.readouts dt { font-size: var(--fs-xs); color: var(--text-3); }
.readouts dd { font: 500 var(--fs-xs)/1.4 var(--font-mono); font-variant-numeric: tabular-nums; text-align: right; color: var(--text); }
.verdict { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: var(--sp-2) var(--sp-4); align-items: center; padding: var(--sp-4); border-radius: var(--r-sm); background: var(--bg-sunk); border: 1px solid var(--line); }
.verdict .big { font: 650 clamp(2rem, 1.6rem + 1.2vw, 2.55rem)/1 var(--font-mono); font-variant-numeric: tabular-nums; }
.verdict .label { display: block; margin-bottom: var(--sp-2); font: 500 var(--fs-micro)/1.35 var(--font-mono); color: var(--text-3); letter-spacing: 0.03em; }
.verdict .pill { justify-self: start; font: 700 var(--fs-micro)/1 var(--font-mono); letter-spacing: 0.1em; padding: 5px 8px; border-radius: var(--r-xs); }
.verdict .note { grid-column: 1 / -1; font-size: var(--fs-xs); color: var(--text-2); line-height: 1.45; }
.verdict[data-state="pass"] { border-color: rgba(107, 212, 154, 0.42); }
.verdict[data-state="pass"] .big { color: var(--pass); }
.verdict[data-state="pass"] .pill { background: rgba(107, 212, 154, 0.14); color: var(--pass); }
.verdict[data-state="fail"] { border-color: rgba(255, 107, 90, 0.42); }
.verdict[data-state="fail"] .big { color: var(--fail); }
.verdict[data-state="fail"] .pill { background: rgba(255, 107, 90, 0.14); color: var(--fail); }
.proof-foot { margin-top: var(--sp-3); font: 400 var(--fs-xs)/1.6 var(--font-mono); color: var(--text-3); }

/* ---------- Problems, Comparison Matrix & 4-Stage Workflow ---------- */
.problems { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--r-md); overflow: hidden; }
.problem { display: grid; gap: var(--sp-3); align-content: start; padding: var(--sp-6); background: var(--bg-raised); min-width: 0; }
.problem svg { width: 68px; height: 68px; }
.problem .no { font: 500 var(--fs-xs)/1 var(--font-mono); color: var(--fail); letter-spacing: 0.06em; }
.problem h3 { font: 650 var(--fs-lg)/1.28 var(--font-sans); letter-spacing: -0.015em; text-wrap: balance; }
.problem p { color: var(--text-2); font-size: var(--fs-sm); text-wrap: pretty; }

.comp-table-shell {
  width: 100%;
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-md);
  background: var(--bg-raised);
}
.comp-table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
  text-align: left;
  font-size: var(--fs-sm);
}
.comp-table th,
.comp-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  line-height: 1.48;
}
.comp-table tr:last-child th,
.comp-table tr:last-child td {
  border-bottom: 0;
}
.comp-table thead th {
  background: var(--bg-sunk);
  font: 600 var(--fs-xs)/1.3 var(--font-mono);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-3);
  border-bottom: 1px solid var(--line-strong);
}
.comp-table thead th.is-inpatch {
  color: var(--pass);
  background: rgba(107, 212, 154, 0.1);
  border-left: 1px solid rgba(107, 212, 154, 0.28);
}
.comp-table tbody th {
  font: 650 var(--fs-sm)/1.45 var(--font-sans);
  color: var(--text);
  width: 18.5%;
}
.comp-table tbody td {
  color: var(--text-2);
  width: 19.5%;
}
.comp-table tbody td.is-inpatch {
  color: var(--text);
  font-weight: 650;
  background: rgba(107, 212, 154, 0.06);
  border-left: 1px solid rgba(107, 212, 154, 0.24);
  width: 23%;
}
.comp-table tbody td.is-inpatch::before {
  content: "✓ ";
  color: var(--pass);
  font-family: var(--font-mono);
  font-weight: 700;
}

.stages { position: relative; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--sp-4); }
.stage-card { position: relative; display: grid; grid-template-rows: auto auto auto 1fr; gap: var(--sp-3); padding: var(--sp-5); border: 1px solid var(--line); border-radius: var(--r-md); background: var(--bg-raised); min-width: 0; transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease); }
.stage-card:hover { border-color: var(--line-strong); transform: translateY(-2px); }
.stage-card:not(:last-child)::after { content: "→"; position: absolute; right: calc(-1 * var(--sp-4) / 2 - 7px); top: 88px; z-index: 1; font: 600 14px/1 var(--font-mono); color: var(--text-3); }
.stage-card svg { width: 100%; height: auto; aspect-ratio: 240 / 150; border-radius: var(--r-sm); background: var(--bg-sunk); border: 1px solid var(--line); }
.stage-card .code { font: 600 var(--fs-micro)/1.3 var(--font-mono); letter-spacing: 0.08em; color: var(--guard); }
.stage-card[data-gate] .code { color: var(--pass); }
.stage-card h3 { font: 650 var(--fs-md)/1.32 var(--font-sans); letter-spacing: -0.01em; text-wrap: balance; }
.stage-card p { font-size: var(--fs-sm); color: var(--text-2); text-wrap: pretty; }
.d-line { fill: none; stroke: var(--text-2); stroke-width: 1.2; }
.d-thin { fill: none; stroke: var(--text-3); stroke-width: 0.8; }
.d-faint { fill: none; stroke: rgba(236, 232, 225, 0.14); stroke-width: 1; }
.d-mask { fill: rgba(226, 92, 158, 0.2); stroke: var(--mask); stroke-width: 1.4; stroke-dasharray: 4 3; }
.d-ring { fill: rgba(70, 199, 214, 0.14); stroke: var(--ring); stroke-width: 1.2; fill-rule: evenodd; }
.d-guard { fill: rgba(233, 177, 74, 0.16); stroke: var(--guard); stroke-width: 1.2; fill-rule: evenodd; }
.d-pass { fill: none; stroke: var(--pass); stroke-width: 2; }
.d-fail { fill: none; stroke: var(--fail); stroke-width: 2; }
.d-node { fill: var(--surface-2); stroke: var(--text-3); stroke-width: 1; }
.d-node-on { fill: var(--surface-2); stroke: var(--guard); stroke-width: 1.4; }
.d-edge-on { fill: none; stroke: var(--guard); stroke-width: 1.8; }
.d-fill-guard { fill: var(--guard); }
.d-text { font: 600 9px/1 var(--font-mono); fill: var(--text-3); }
.d-text-on { font: 700 9px/1 var(--font-mono); fill: var(--guard); }
.d-text-pass { font: 700 10px/1 var(--font-mono); fill: var(--pass); }

/* ---------- Bilingual Workspace Gallery ---------- */
.gallery { display: grid; gap: var(--sp-4); }
.gallery-main { position: relative; display: grid; grid-template-columns: minmax(0, 1fr) 310px; border: 1px solid var(--line); border-radius: var(--r-md); overflow: hidden; background: var(--bg-raised); }
.gallery-main .view { position: relative; display: grid; place-items: center; background: var(--bg-sunk); border: 0; padding: 0; cursor: zoom-in; min-height: 0; aspect-ratio: var(--shot-aspect, 1440 / 900); }
.gallery-main .view img { width: 100%; height: 100%; object-fit: contain; transition: opacity 220ms var(--ease); }
.gallery-main .view .zoom { position: absolute; right: var(--sp-3); bottom: var(--sp-3); padding: 7px 11px; border-radius: var(--r-pill); background: rgba(8, 9, 11, 0.78); border: 1px solid var(--line-strong); font: 600 var(--fs-micro)/1 var(--font-sans); color: var(--text); backdrop-filter: blur(6px); }
.gallery-main .meta { display: grid; align-content: start; gap: var(--sp-3); padding: var(--sp-5); border-left: 1px solid var(--line); min-width: 0; }
.gallery-main .meta .count { font: 500 var(--fs-xs)/1 var(--font-mono); color: var(--text-3); }
.lang-sync-badge {
  justify-self: start;
  padding: 4px 8px;
  border-radius: var(--r-xs);
  background: rgba(212, 228, 139, 0.12);
  border: 1px solid rgba(212, 228, 139, 0.3);
  font: 600 var(--fs-micro)/1.2 var(--font-mono);
  color: var(--accent-editorial);
}
.gallery-main .meta h3 { font: 650 var(--fs-lg)/1.3 var(--font-sans); letter-spacing: -0.01em; text-wrap: balance; }
.gallery-main .meta p { font-size: var(--fs-sm); color: var(--text-2); text-wrap: pretty; }
.thumbs { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--sp-3); }
.thumbs button { display: grid; gap: var(--sp-2); padding: 10px; border: 1px solid var(--line); border-radius: var(--r-sm); background: var(--bg-raised); cursor: pointer; text-align: left; min-width: 0; transition: border-color var(--dur) var(--ease); }
/* Preserve exact screenshot aspect ratio on thumbnails too */
.thumbs img { width: 100%; height: auto; aspect-ratio: 16 / 10; object-fit: contain; background: var(--bg-sunk); border-radius: var(--r-xs); border: 1px solid var(--line); opacity: 0.72; transition: opacity var(--dur) var(--ease), border-color var(--dur) var(--ease); }
.thumbs button > span { font: 650 var(--fs-xs)/1.35 var(--font-sans); color: var(--text-2); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.thumbs button:hover img { opacity: 0.94; }
.thumbs button[aria-current="true"] { border-color: var(--accent-editorial); }
.thumbs button[aria-current="true"] img { opacity: 1; border-color: var(--accent-editorial); }
.thumbs button[aria-current="true"] > span { color: var(--text); }

dialog.lightbox { width: 100%; max-width: 100%; height: 100%; max-height: 100%; margin: 0; padding: 0; border: 0; background: rgba(6, 7, 8, 0.96); color: var(--text); }
dialog.lightbox[open] { display: grid; grid-template-rows: auto minmax(0, 1fr) auto; animation: lb-in 200ms var(--ease); }
dialog.lightbox::backdrop { background: rgba(0, 0, 0, 0.65); }
@keyframes lb-in { from { opacity: 0; } to { opacity: 1; } }
.lb-bar { display: flex; align-items: center; gap: var(--sp-3); padding: var(--sp-3) var(--sp-4); border-bottom: 1px solid var(--line); }
.lb-bar .t { flex: 1; min-width: 0; font: 650 var(--fs-sm)/1.3 var(--font-sans); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.lb-bar .n { font: 500 var(--fs-xs)/1 var(--font-mono); color: var(--text-3); }
.lb-btn { display: inline-grid; place-items: center; min-width: 40px; height: 36px; padding: 0 var(--sp-3); border: 1px solid var(--line-strong); border-radius: var(--r-pill); background: transparent; cursor: pointer; font: 650 var(--fs-xs)/1 var(--font-sans); white-space: nowrap; }
.lb-btn:hover { border-color: var(--text); }
.lb-view { overflow: auto; display: grid; place-items: center; padding: var(--sp-4); }
.lb-view img { max-width: 100%; max-height: 100%; object-fit: contain; border-radius: var(--r-xs); box-shadow: 0 30px 80px rgba(0, 0, 0, 0.65); }
.lb-view.is-actual { place-items: start; }
.lb-view.is-actual img { max-width: none; max-height: none; }
.lb-cap { padding: var(--sp-3) var(--sp-4) var(--sp-4); font-size: var(--fs-sm); color: var(--text-2); text-align: center; }

/* ---------- Specs & Platforms ---------- */
.specs { border-top: 1px solid var(--line-strong); }
.spec-row { display: grid; grid-template-columns: 56px minmax(0, 0.45fr) minmax(0, 1fr); gap: var(--sp-5); padding: var(--sp-5) 0; border-bottom: 1px solid var(--line); align-items: baseline; transition: background var(--dur) var(--ease); }
.spec-row:hover { background: linear-gradient(90deg, rgba(212, 228, 139, 0.05), transparent 60%); }
.spec-row .i { font: 500 var(--fs-xs)/1 var(--font-mono); color: var(--text-3); }
.spec-row dt { font: 650 var(--fs-sm)/1.4 var(--font-sans); color: var(--text-2); }
.spec-row dd { font: 500 var(--fs-md)/1.45 var(--font-sans); letter-spacing: -0.005em; color: var(--text); overflow-wrap: anywhere; }
.spec-row dd code { font: 600 0.92em/1 var(--font-mono); color: var(--pass); }

.roadmap { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); gap: var(--sp-5); }
.phase { position: relative; display: grid; gap: var(--sp-4); align-content: start; padding: var(--sp-6) var(--sp-5) var(--sp-5); border: 1px solid var(--line); border-radius: var(--r-md); background: var(--bg-raised); }
.phase--next { background: transparent; border-style: dashed; border-color: var(--line-strong); }
.phase .rail { display: flex; align-items: center; gap: var(--sp-3); }
.phase .rail b { width: 12px; height: 12px; border-radius: 50%; background: var(--pass); box-shadow: 0 0 0 4px rgba(107, 212, 154, 0.18); flex: none; }
.phase--next .rail b { background: transparent; border: 1.5px solid var(--guard); box-shadow: none; }
.phase .rail > span { font: 650 var(--fs-sm)/1.3 var(--font-sans); }
.phase .rail em { margin-left: auto; font: 500 var(--fs-micro)/1 var(--font-mono); font-style: normal; letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-3); white-space: nowrap; }
.platforms { display: grid; grid-template-columns: repeat(auto-fit, minmax(118px, 1fr)); gap: var(--sp-3); }
.platform { display: grid; gap: var(--sp-3); padding: var(--sp-4); border: 1px solid var(--line); border-radius: var(--r-sm); background: var(--bg-sunk); }
.platform svg { width: 28px; height: 28px; }
.platform svg .p-line { fill: none; stroke: var(--text-2); stroke-width: 1.4; }
.platform strong { font: 650 var(--fs-base)/1.2 var(--font-sans); }

/* Native 14-Language Showcase Matrix */
.native-langs {
  margin-top: var(--sp-5);
  padding: var(--sp-5) var(--sp-6);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--bg-raised);
  display: grid;
  gap: var(--sp-4);
}
.native-langs__head { display: grid; gap: 6px; }
.native-langs__head h3 { font: 620 var(--fs-lg)/1.3 var(--font-sans); color: var(--text); letter-spacing: -0.01em; }
.native-langs__head p { font-size: var(--fs-sm); color: var(--text-2); }
.native-langs__list { display: flex; flex-wrap: wrap; gap: 8px; }
.native-lang-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 12px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line-strong);
  background: var(--bg-sunk);
  color: var(--text-2);
  cursor: pointer;
  font: 620 var(--fs-xs)/1.1 var(--font-sans);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.native-lang-chip:hover { border-color: var(--accent-editorial); color: var(--text); }
.native-lang-chip small { font: 600 10px/1 var(--font-mono); color: var(--text-3); text-transform: uppercase; letter-spacing: 0.04em; }
.native-lang-chip[aria-pressed="true"] {
  background: rgba(212, 228, 139, 0.14);
  border-color: var(--accent-editorial);
  color: var(--accent-editorial);
}
.native-lang-chip[aria-pressed="true"] small { color: var(--accent-editorial); }

/* RTL Support (Arabic) */
[dir="rtl"] .topnav { margin-left: 0; margin-right: auto; }
[dir="rtl"] .stage-bar__title { margin-right: 0; margin-left: auto; }
[dir="rtl"] .client-shot,
[dir="rtl"] .thumbs button,
[dir="rtl"] .comp-table { text-align: start; }
[dir="rtl"] .client-shot__head em,
[dir="rtl"] .phase .rail em { margin-left: 0; margin-right: auto; }
[dir="rtl"] .gallery-main .meta { border-left: 0; border-right: 1px solid var(--line); }
[dir="rtl"] .comp-table thead th.is-inpatch,
[dir="rtl"] .comp-table tbody td.is-inpatch { border-left: 0; border-right: 1px solid rgba(107, 212, 154, 0.24); }
[dir="rtl"] .stage-card:not(:last-child)::after { content: "←"; right: auto; left: calc(-1 * var(--sp-4) / 2 - 7px); }
[dir="rtl"] .hero-compare,
[dir="rtl"] .proof-stage { direction: ltr; }
[dir="rtl"] .lang-more { background-position: left 9px center; padding: 5px 9px 5px 24px; }

/* ---------- Closing & Footer ---------- */
.closing { margin-top: var(--sp-9); border-top: 1px solid var(--line); background: var(--bg-raised); }
.closing .wrap { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.9fr); gap: var(--sp-7); padding-block: var(--sp-8); align-items: end; }
.closing h2 { font: 650 var(--fs-2xl)/1.12 var(--font-sans); letter-spacing: var(--track-display); text-wrap: balance; }
.closing-sub { margin-top: var(--sp-3); font-size: var(--fs-sm); color: var(--text-2); max-width: 52ch; }
.closing .contacts { display: grid; gap: var(--sp-3); }
.closing .contacts a { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: var(--sp-3); align-items: center; padding: var(--sp-4) var(--sp-5); border: 1px solid var(--line); border-radius: var(--r-sm); text-decoration: none; background: var(--bg); transition: border-color var(--dur) var(--ease); }
.closing .contacts a:hover { border-color: var(--accent-editorial); }
.closing .contacts small { display: block; font: 500 var(--fs-micro)/1.3 var(--font-mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-3); }
.closing .contacts b { font: 650 var(--fs-md)/1.4 var(--font-sans); overflow-wrap: anywhere; }
.closing .contacts .go { font-family: var(--font-mono); color: var(--accent-editorial); }
.foot { border-top: 1px solid var(--line); }
.foot .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: var(--sp-3); padding-block: var(--sp-5); font: 400 var(--fs-xs)/1.5 var(--font-mono); color: var(--text-3); }

/* ---------- Responsive ---------- */
@media (max-width: 1120px) {
  .topnav { display: none; }
  .lang-switch { margin-inline-start: auto; }
  .hero-grid { grid-template-columns: minmax(0, 1fr); gap: var(--sp-4); }
  .hero-copy,
  .hero-visual { display: contents; }
  .hero-head { order: 1; }
  #hero-persona-tags { order: 2; }
  .stage-card-shell { order: 3; }
  #hero-clients { order: 4; padding-top: 0; border-top: 0; }
  #hero-client-previews { order: 5; }
  .hero-detail { order: 6; }
  .pillars-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .proof { grid-template-columns: minmax(0, 1fr); }
  .panel { grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: start; }
  .panel .verdict, .panel .readouts { grid-column: 1 / -1; }
  .stages { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stage-card:nth-child(2)::after { display: none; }
  .gallery-main { grid-template-columns: minmax(0, 1fr); }
  .gallery-main .meta,
  [dir="rtl"] .gallery-main .meta { border-left: 0; border-right: 0; border-top: 1px solid var(--line); }
  .roadmap { grid-template-columns: minmax(0, 1fr); }
  .closing .wrap { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 760px) {
  :root { --sp-9: 72px; --sp-8: 44px; }
  .topbar .wrap { height: 44px; gap: var(--sp-2); }
  .logo__by { display: none; }
  .lang-switch button { padding: 5px 8px; min-width: 34px; font-size: 11px; }
  .lang-more { max-width: 98px; padding: 4px 20px 4px 7px; font-size: 11px; background-position: right 6px center; }
  [dir="rtl"] .lang-more { padding: 4px 7px 4px 20px; background-position: left 6px center; }
  .hero-grid { gap: 6px; padding-block: 6px 16px; }
  .hero-head { gap: 3px; }
  .hero-badges { gap: 5px; }
  .badge { padding: 2px 8px 2px 6px; font-size: 10px; }
  .badge i { width: 12px; height: 12px; }
  .contract-pill { display: none; }
  .hero-display { margin-top: 0; font-size: clamp(1.64rem, 6.7vw, 1.96rem); line-height: 1.15; }
  :is(:lang(zh-CN), :lang(zh-Hant), :lang(ja), :lang(ko)) .hero-display { font-size: clamp(1.58rem, 6.4vw, 1.88rem); line-height: 1.2; }
  .hero-headline { font-size: 0.81rem; line-height: 1.24; }
  .persona-tags { gap: 4px; }
  .persona-tag { padding: 3px 7px; gap: 5px; }
  .persona-tag__dot { width: 5px; height: 5px; }
  .persona-tag strong { font-size: 10px; line-height: 1.2; }
  .win-dots,
  .stage-bar__title { display: none; }
  .stage-bar { padding: 4px 6px; gap: 3px; justify-content: space-between; }
  .stage-tools { width: 100%; justify-content: flex-end; gap: 4px; order: 2; }
  .auto-pill { padding: 2px 6px; font-size: 9.5px; }
  .stage-bar .scene-tabs { width: 100%; justify-content: space-between; flex-wrap: nowrap; order: 1; }
  .stage-bar .scene-tabs button { flex: 1 1 0; padding: 3px 4px; font-size: 9.5px; text-align: center; overflow: hidden; text-overflow: ellipsis; }
  .hero-compare .tag { top: 6px; padding: 2px 6px; font-size: 9px; }
  .hero-compare .tag--l { left: 6px; }
  .hero-compare .tag--r { right: 6px; }
  .hero-story-pill { left: 6px; right: 6px; bottom: 6px; padding: 3px 7px; font-size: 9px; }
  .stage-caption { grid-template-columns: minmax(0, 1fr) auto; gap: 6px; padding: 5px 8px; }
  .stage-caption__title { font-size: 11.5px; line-height: 1.2; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
  .stage-caption__sum { display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden; font-size: 10px; line-height: 1.24; }
  .stage-jump { padding: 3px 7px; font-size: 9.5px; }
  .client-strip { grid-template-columns: minmax(0, 1fr); gap: 4px; padding-top: 0; border-top: 0; }
  .client-group { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; padding: 4px 7px; gap: 3px 6px; }
  .client-group__head { font-size: 9px; }
  .client-badges { gap: 3px; }
  .client-chip { padding: 2px 5px; font-size: 10px; gap: 3px; }
  .client-chip svg { width: 9px; height: 9px; }
  .client-previews { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 6px; }
  .client-shot { padding: 4px; gap: 3px; }
  .client-shot__head strong { font-size: 10px; }
  .client-shot__head em { display: none; }
  .hero-detail { gap: 9px; margin-top: 2px; }
  .persona-tags { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .flow-strip { grid-template-columns: minmax(0, 1fr); }
  .pillars-grid { grid-template-columns: minmax(0, 1fr); }
  .sec-head { grid-template-columns: minmax(0, 1fr); }
  .problems { grid-template-columns: minmax(0, 1fr); }
  .problem { padding: var(--sp-5); }
  .hero .ctas .btn { flex: 1 1 100%; }
  .panel { grid-template-columns: minmax(0, 1fr); padding: var(--sp-4); }
  .loupe { width: 148px; }
  .loupe canvas { width: 148px; height: 104px; }
  .loupe__cap { font-size: 9px; padding: 4px 6px; }
  .native-langs { padding: var(--sp-4); }
  svg.overlay text { display: none; }
  .stages { grid-template-columns: minmax(0, 1fr); }
  .stage-card::after { display: none; }
  .thumbs { grid-template-columns: minmax(0, 1fr); }
  .spec-row { grid-template-columns: 32px minmax(0, 1fr); gap: var(--sp-1) var(--sp-3); padding: var(--sp-4) 0; }
  .spec-row dd { grid-column: 2; font-size: var(--fs-base); }
  .lb-bar .n { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}