/* ==========================================================================
   Launch in China — launchinchina.com
   Stylesheet v2 — 密度优化版
   改动：正文 15→17px · 辅助 13.5→15px · mono 10.5→12px 且大幅减量 ·
        新增商店墙 / 线性图标 / 并行进度图 / 手机 mockup · 区块留白 +20%
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Design tokens
   -------------------------------------------------------------------------- */
:root {
  /* dark (default) */
  --bg-page: #0b0d10;
  --bg-surface: #14171c;
  --bg-surface-2: #1c2027;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.18);
  --text-heading: #ffffff;
  --text-body: #98a0ae;
  --text-muted: #6b7382;
  --accent: #5eead4;
  --accent-ink: #06231f;
  --accent-dim: rgba(94, 234, 212, 0.12);

  /* hairline */
  --hairline: 0.5px;

  /* geometry */
  --wrap: 1200px;
  --nav-h: 68px;
  --r-card: 14px;
  --r-btn: 8px;
  --r-tag: 6px;

  /* rhythm — 放大 20% */
  --sec: clamp(92px, 10vw, 180px);
  --sec-sm: clamp(64px, 7vw, 112px);

  /* motion */
  --ease: cubic-bezier(0.16, 1, 0.3, 1);

  /* type */
  --f-display: "Geist", "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --f-body: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --f-mono: "Geist Mono", ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

/* --------------------------------------------------------------------------
   2. Reset
   -------------------------------------------------------------------------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 20px);
}

body {
  margin: 0;
  background: var(--bg-page);
  color: var(--text-body);
  font-family: var(--f-body);
  font-size: 17px;
  line-height: 1.7;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1, h2, h3, h4, p, ul, ol, figure, blockquote { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
table { border-collapse: collapse; width: 100%; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

/* --------------------------------------------------------------------------
   3. Typography — 整体上调一档
   -------------------------------------------------------------------------- */
.display,
h1, h2, h3 {
  color: var(--text-heading);
  font-family: var(--f-display);
  font-weight: 500;
}

.display {
  font-size: clamp(40px, 5.2vw, 76px);
  line-height: 1.04;
  letter-spacing: -0.032em;
}

h1 { font-size: clamp(34px, 4vw, 54px); line-height: 1.1; letter-spacing: -0.028em; }
h2 { font-size: clamp(28px, 3vw, 40px); line-height: 1.18; letter-spacing: -0.022em; }
h3 { font-size: 22px; line-height: 1.32; letter-spacing: -0.012em; }

.lead { font-size: 19px; line-height: 1.7; max-width: 62ch; }
.small { font-size: 15px; line-height: 1.6; max-width: 62ch; }
.muted { color: var(--text-muted); }

/* 正文统一限宽，杜绝长行 */
.hero__sub,
.sec-head p,
.card > p,
.case p,
.light p,
.faq__a p,
.final p { max-width: 62ch; }

/* mono label — 科技锚点（全站每区块至多 1 个） */
.mono {
  font-family: var(--f-mono);
  font-size: 12px;
  line-height: 1.4;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 400;
}
.mono--md { font-size: 14px; letter-spacing: 0.08em; }
.eyebrow { display: inline-flex; align-items: center; gap: 10px; color: var(--accent); }
.eyebrow::before {
  content: "";
  width: 20px;
  height: var(--hairline);
  background: currentColor;
  display: block;
}

/* --------------------------------------------------------------------------
   4. Layout
   -------------------------------------------------------------------------- */
.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.narrow { max-width: 720px; }
section { position: relative; }
.sec { padding: var(--sec) 0; }
.sec--sm { padding: var(--sec-sm) 0; }
.hair { height: var(--hairline); background: var(--border); border: 0; }

.stack-24 > * + * { margin-top: 24px; }
.stack-16 > * + * { margin-top: 16px; }
.stack-12 > * + * { margin-top: 12px; }
.stack-8 > * + * { margin-top: 8px; }

.sec-head { max-width: 760px; }
.sec-head .mono { color: var(--accent); }
.sec-head h2 { margin-top: 20px; }
.sec-head p { margin-top: 22px; font-size: 19px; }

/* --------------------------------------------------------------------------
   5. Components
   -------------------------------------------------------------------------- */

/* 5.1 buttons -------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: var(--r-btn);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.3;
  white-space: nowrap;
  border: var(--hairline) solid transparent;
  transition: background-color 0.18s var(--ease), border-color 0.18s var(--ease),
    color 0.18s var(--ease);
}
.btn .arw { transition: transform 0.16s var(--ease); }
.btn:hover .arw { transform: translateX(2px); }

.btn--primary { background: var(--accent); color: var(--accent-ink); }
.btn--primary:hover { background: #7df0dd; }

.btn--ghost { border-color: var(--border-strong); color: var(--text-heading); }
.btn--ghost:hover { border-color: rgba(255, 255, 255, 0.34); }

.btn--lg { padding: 15px 26px; font-size: 16px; }

/* text link */
.tlink {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent);
  font-size: 15px;
}
.tlink .arw { transition: transform 0.16s var(--ease); }
.tlink:hover .arw { transform: translateX(2px); }

/* 5.2 tag ----------------------------------------------------------------- */
.tag {
  display: inline-block;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-dim);
  border-radius: var(--r-tag);
  padding: 5px 10px;
}
.tag--plain { background: none; border: var(--hairline) solid var(--border); color: var(--text-body); }

/* 5.3 icon ---------------------------------------------------------------- */
.icon { width: 30px; height: 30px; flex: none; color: var(--accent); }
.icon--sm { width: 22px; height: 22px; }

/* 5.3b scene — 卡内场景插画（替代小图标） */
.scene { width: 100%; max-width: 220px; height: auto; display: block; }
.numcard .scene { margin-bottom: 4px; }

/* 5.4 card ---------------------------------------------------------------- */
.card {
  background: var(--bg-surface);
  border: var(--hairline) solid var(--border);
  border-radius: var(--r-card);
  padding: 30px;
  transition: border-color 0.18s var(--ease), background-color 0.18s var(--ease),
    transform 0.18s var(--ease);
}
.card:hover {
  border-color: var(--border-strong);
  background: var(--bg-surface-2);
  transform: translateY(-2px);
}
.card h3 { margin-top: 22px; }
.card > p { margin-top: 14px; }
.card__foot {
  margin-top: 26px;
  padding-top: 18px;
  border-top: var(--hairline) solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
}
.card__foot .k { font-family: var(--f-mono); font-size: 13px; color: var(--text-muted); letter-spacing: 0.06em; }
.card__foot .p { font-family: var(--f-mono); font-size: 15px; color: var(--accent); letter-spacing: 0.02em; }

/* 5.5 numbered card（三道门槛） -------------------------------------------- */
.numcard .icon { color: var(--accent); }
.numline { display: flex; align-items: center; gap: 16px; }
.numline .n { font-family: var(--f-mono); font-size: 14px; letter-spacing: 0.1em; color: var(--accent); }
.numline .rule { flex: 1; height: var(--hairline); background: var(--border); }
.numcard h3 { margin-top: 20px; }
.numcard p { margin-top: 14px; }
.numcard .tlink { margin-top: 20px; }

/* 5.6 lists --------------------------------------------------------------- */
.ticks > li {
  position: relative;
  padding-left: 24px;
  font-size: 16px;
  line-height: 1.65;
}
.ticks > li + li { margin-top: 12px; }
.ticks > li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 11px;
  height: var(--hairline);
  background: var(--accent);
}

/* 5.7 grid helpers -------------------------------------------------------- */
.g2 { display: grid; gap: 28px; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.g3 { display: grid; gap: 28px; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.g4 { display: grid; gap: 24px; grid-template-columns: repeat(4, minmax(0, 1fr)); }

/* --------------------------------------------------------------------------
   6. Light inverted blocks
   -------------------------------------------------------------------------- */
.light {
  --bg-page: #f5f6f8;
  --bg-surface: #ffffff;
  --bg-surface-2: #fbfcfd;
  --border: rgba(11, 13, 16, 0.1);
  --border-strong: rgba(11, 13, 16, 0.22);
  --text-heading: #0b0d10;
  --text-body: #5a6270;
  --text-muted: #8a919e;
  --accent: #0d9488;
  --accent-ink: #ffffff;
  --accent-dim: rgba(13, 148, 136, 0.1);
  background: var(--bg-page);
}

/* 6.1 boundary cards（What we don't do · light 区） */
.dcard {
  background: var(--bg-surface);
  border: var(--hairline) solid var(--border);
  border-radius: var(--r-card);
  padding: 30px;
}
.dcard svg { width: 44px; height: 44px; color: var(--accent); }
.dcard h3 { margin-top: 20px; font-size: 20px; }
.dcard p { margin-top: 12px; font-size: 16px; }

/* 6.2 filing cards（Four filings · 深色区） */
.fcard {
  background: var(--bg-surface);
  border: var(--hairline) solid var(--border);
  border-radius: var(--r-card);
  padding: 30px;
}
.fcard__n {
  font-family: var(--f-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--accent);
}
.fcard h3 { margin-top: 16px; font-size: 19px; }
.fcard p { margin-top: 12px; font-size: 15.5px; line-height: 1.65; }

/* 6.3 two starting points（Path A / Path B · light 区） */
.paths {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
  margin-top: clamp(44px, 5vw, 68px);
  align-items: start;
}
.path {
  background: var(--bg-surface);
  border: var(--hairline) solid var(--border);
  border-radius: var(--r-card);
  padding: 34px;
}
.path__tag {
  display: inline-block;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  border: var(--hairline) solid var(--border-strong);
  border-radius: var(--r-tag);
  padding: 6px 12px;
}
.path__tag--alt { color: var(--text-heading); border-color: var(--border); }
.path h3 { margin-top: 22px; font-size: 23px; }
.path__lead { margin-top: 14px; font-size: 16.5px; line-height: 1.7; color: var(--text-body); }
.path__lead em { font-style: normal; color: var(--text-heading); border-bottom: var(--hairline) solid var(--accent); }
.path .ticks { margin-top: 24px; }
.path .ticks > li { font-size: 15.5px; line-height: 1.6; }
.path .ticks b { color: var(--text-heading); font-weight: 500; }
.path__foot {
  margin-top: 28px;
  padding-top: 22px;
  border-top: var(--hairline) solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 14px;
  align-items: flex-start;
}
.path__meta {
  font-family: var(--f-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* 6.4 material checklist（Your side of the paperwork · light 区） */
.mats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
  margin-top: clamp(48px, 6vw, 72px);
  align-items: start;
}
.mat {
  background: var(--bg-surface);
  border: var(--hairline) solid var(--border);
  border-radius: var(--r-card);
  padding: 34px;
}
.mat h3 { font-size: 21px; }
.mlist { margin-top: 22px; }
.mlist li {
  display: flex;
  gap: 12px;
  padding: 10px 0;
  border-bottom: var(--hairline) solid var(--border);
  font-size: 15px;
  line-height: 1.55;
  color: var(--text-body);
}
.mlist li:last-child { border-bottom: 0; }
.mlist li::before {
  content: "✓";
  flex: none;
  color: var(--accent);
  font-weight: 600;
  line-height: 1.55;
}
.mlist b { color: var(--text-heading); font-weight: 500; }
.mnote {
  margin-top: 20px;
  padding: 14px 16px;
  border-left: 2px solid var(--accent);
  background: var(--accent-dim);
  border-radius: 0 var(--r-tag) var(--r-tag) 0;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--text-heading);
}

/* --------------------------------------------------------------------------
   7. Nav
   -------------------------------------------------------------------------- */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 60;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  border-bottom: var(--hairline) solid transparent;
  transition: background-color 0.2s var(--ease), border-color 0.2s var(--ease),
    backdrop-filter 0.2s var(--ease);
}
.nav.is-stuck {
  background: rgba(11, 13, 16, 0.8);
  border-bottom-color: var(--border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.nav__in { display: flex; align-items: center; gap: 34px; width: 100%; }

.brand { display: inline-flex; align-items: center; gap: 10px; flex: none; }
.brand__mark { width: 20px; height: 20px; flex: none; }
.brand__name {
  font-family: var(--f-display);
  font-size: 16px;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--text-heading);
}

.nav__links { display: flex; align-items: center; gap: 2px; margin-left: 10px; }
.nav__links > li { position: relative; }
.nav__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 12px;
  border-radius: var(--r-btn);
  font-size: 15px;
  color: var(--text-body);
  transition: color 0.16s var(--ease), background-color 0.16s var(--ease);
}
.nav__link:hover { color: var(--text-heading); background: rgba(255, 255, 255, 0.04); }
.nav__link .cv { width: 8px; height: 8px; opacity: 0.7; }
.nav__cta { margin-left: auto; display: flex; align-items: center; gap: 12px; }

/* dropdown */
.drop {
  position: absolute;
  top: calc(100% + 10px);
  left: -8px;
  min-width: 300px;
  background: var(--bg-surface);
  border: var(--hairline) solid var(--border);
  border-radius: var(--r-card);
  padding: 10px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: opacity 0.16s var(--ease), transform 0.16s var(--ease), visibility 0.16s;
}
.nav__links > li:hover .drop,
.nav__links > li:focus-within .drop { opacity: 1; visibility: visible; transform: none; }
.drop a {
  display: block;
  padding: 10px 12px;
  border-radius: var(--r-tag);
  font-size: 15px;
  color: var(--text-heading);
  transition: background-color 0.14s var(--ease), color 0.14s var(--ease);
}
.drop a:hover { background: var(--bg-surface-2); }
.drop a span { display: block; font-size: 14px; color: var(--text-muted); margin-top: 3px; font-family: var(--f-body); }

.skip {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}
.skip:focus {
  position: fixed;
  left: 16px;
  top: 12px;
  z-index: 100;
  width: auto;
  height: auto;
  clip-path: none;
  padding: 8px 12px;
  border-radius: var(--r-btn);
  background: var(--accent);
  color: var(--accent-ink);
  font-size: 14px;
  white-space: normal;
}

/* burger */
.burger { display: none; width: 40px; height: 40px; flex: none; place-items: center; margin-left: auto; }
.burger i { display: block; width: 18px; height: var(--hairline); background: var(--text-heading); position: relative; }
.burger i::before,
.burger i::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: var(--hairline);
  background: var(--text-heading);
}
.burger i::before { top: -5px; }
.burger i::after { top: 5px; }

.mnav {
  position: fixed;
  inset: var(--nav-h) 0 0 0;
  z-index: 55;
  background: var(--bg-page);
  border-top: var(--hairline) solid var(--border);
  padding: 20px 24px 40px;
  overflow-y: auto;
  display: none;
}
.mnav.is-open { display: block; }
.mnav section { padding: 22px 0; border-bottom: var(--hairline) solid var(--border); }
.mnav h4 { font-family: var(--f-mono); font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--text-muted); font-weight: 400; }
.mnav a { display: block; padding: 11px 0; font-size: 18px; color: var(--text-heading); }
.mnav .btn { margin-top: 26px; width: 100%; justify-content: center; }

/* --------------------------------------------------------------------------
   8. Hero
   -------------------------------------------------------------------------- */
.hero { padding: calc(var(--nav-h) + clamp(28px, 3.5vw, 52px)) 0 var(--sec-sm); }
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image: linear-gradient(to right, rgba(255, 255, 255, 0.03) 0.5px, transparent 0.5px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.03) 0.5px, transparent 0.5px);
  background-size: 72px 72px;
  -webkit-mask-image: radial-gradient(ellipse 78% 62% at 22% 8%, #000 0%, transparent 72%);
  mask-image: radial-gradient(ellipse 78% 62% at 22% 8%, #000 0%, transparent 72%);
  pointer-events: none;
}
.hero > .wrap { position: relative; z-index: 1; }

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  gap: clamp(36px, 5vw, 72px);
  align-items: start;
}
.hero__sub { margin-top: 30px; font-size: 19px; line-height: 1.68; max-width: 600px; }
.hero__sub strong { color: var(--text-heading); font-weight: 500; }
.hero__cta { margin-top: 38px; display: flex; flex-wrap: wrap; gap: 14px; }
.hero__micro { margin-top: 20px; font-size: 15px; color: var(--text-muted); max-width: 500px; }

.posline {
  margin-top: clamp(44px, 5vw, 68px);
  padding-top: 24px;
  border-top: var(--hairline) solid var(--border);
  display: flex;
  gap: 16px;
  max-width: 780px;
}
.posline .mono { color: var(--accent); flex: none; padding-top: 4px; }
.posline p { font-size: 16px; color: var(--text-body); max-width: 60ch; }
.posline p b { color: var(--text-heading); font-weight: 500; }

/* hero illustration — launch trajectory */
.hero__art { position: relative; padding-top: 6px; }
.hero__art svg { width: 100%; height: auto; }
.hero__art .orbit { animation: dashflow 7s linear infinite; }
.hero__art .hex-pulse { animation: hexpulse 3.2s ease-in-out infinite alternate; }
.hero__art .flame { animation: flame 1.1s ease-in-out infinite alternate; transform-origin: 124px 546px; }
.hero__art .wp circle:first-child { animation: wpbreathe 3s ease-in-out infinite; }
.hero__art .wp--2 circle:first-child { animation-delay: 0.7s; }
.hero__art .wp--3 circle:first-child { animation-delay: 1.4s; }
.hero__art .stars { animation: starfade 4s ease-in-out infinite alternate; }
@keyframes dashflow { to { stroke-dashoffset: -140; } }
@keyframes hexpulse { from { fill-opacity: 0.05; } to { fill-opacity: 0.22; } }
@keyframes flame { from { transform: translateY(0); opacity: 0.75; } to { transform: translateY(3px); opacity: 1; } }
@keyframes wpbreathe { 0%, 100% { stroke-opacity: 0.35; } 50% { stroke-opacity: 0.95; } }
@keyframes starfade { from { opacity: 0.55; } to { opacity: 1; } }

@media (prefers-reduced-motion: reduce) {
  .hero__art .orbit, .hero__art .hex-pulse, .hero__art .flame,
  .hero__art .wp circle:first-child, .hero__art .stars { animation: none; }
}

/* --------------------------------------------------------------------------
   9. Store wall（替代原细字信任条）
   -------------------------------------------------------------------------- */
.storewall { border-top: var(--hairline) solid var(--border); border-bottom: var(--hairline) solid var(--border); }
.storewall__in {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 28px 40px;
  align-items: center;
  padding: 30px 0;
}
.storewall__in > .mono { color: var(--accent); }
.stores { display: flex; flex-wrap: wrap; align-items: center; gap: 16px 30px; }
.store {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  font-family: var(--f-display);
  font-size: 18px;
  font-weight: 500;
  color: var(--text-heading);
  letter-spacing: -0.01em;
  opacity: 0.94;
}
.store b {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  border: var(--hairline) solid rgba(94, 234, 212, 0.4);
  background: var(--accent-dim);
  color: var(--accent);
  display: grid;
  place-items: center;
  font-family: var(--f-display);
  font-size: 15px;
  font-weight: 500;
  flex: none;
}
.store i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  display: block;
  flex: none;
}
.store i.prog { background: none; border: 1.5px solid var(--text-muted); }
.store--prog { color: var(--text-muted); font-weight: 400; }
.store--prog i { background: var(--text-muted); }
.storewall__note { font-size: 14px; color: var(--text-muted); }

/* --------------------------------------------------------------------------
   10. Steps / flow + 并行进度图
   -------------------------------------------------------------------------- */
.flow { position: relative; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 0; }
.flow::before {
  content: "";
  position: absolute;
  top: 7px;
  left: 7px;
  right: 7px;
  height: var(--hairline);
  background: var(--border);
}
.flow__step { position: relative; padding: 40px 26px 0 0; }
.flow__step::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--bg-page);
  border: var(--hairline) solid var(--border-strong);
}
.flow__step--key::before { border-color: var(--accent); background: var(--accent); }
.flow__step .n { font-family: var(--f-mono); font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--text-muted); }
.flow__step h3 { margin-top: 12px; font-size: 19px; }
.flow__step p { margin-top: 12px; font-size: 16px; line-height: 1.65; color: var(--text-body); }
.flow__step .flag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 14px;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
}

/* 并行进度图（gantt） */
.gantt {
  margin-top: clamp(52px, 6vw, 80px);
  border: var(--hairline) solid var(--border);
  border-radius: var(--r-card);
  padding: 8px 26px 22px;
  background: var(--bg-surface);
}
.gantt__head { display: flex; justify-content: space-between; align-items: center; padding: 18px 0; border-bottom: var(--hairline) solid var(--border); gap: 16px; }
.gantt__head .mono { color: var(--text-muted); }
.gantt__lane { display: grid; grid-template-columns: 150px minmax(0, 1fr); gap: 20px; align-items: center; padding: 15px 0; border-bottom: var(--hairline) solid var(--border); }
.gantt__lane:last-child { border-bottom: 0; }
.gantt__lbl { font-size: 16px; color: var(--text-heading); }
.gantt__lbl span { display: block; font-family: var(--f-mono); font-size: 13px; color: var(--text-muted); margin-top: 3px; letter-spacing: 0.06em; }
.gantt__track { position: relative; height: 30px; }
.bar {
  position: absolute;
  top: 0;
  bottom: 0;
  left: calc(var(--a) * 1%);
  width: calc((var(--b) - var(--a)) * 1%);
  border-radius: 5px;
  background: rgba(255, 255, 255, 0.07);
  border: var(--hairline) solid var(--border-strong);
  display: flex;
  align-items: center;
  padding: 0 12px;
  font-family: var(--f-mono);
  font-size: 13px;
  color: var(--text-body);
  letter-spacing: 0.04em;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}
.bar--key { background: var(--accent-dim); border-color: rgba(94, 234, 212, 0.45); color: var(--accent); }
/* 可选泳道（如小程序备案 · 仅客户需要时） */
.bar--opt {
  background: transparent;
  border-style: dashed;
  border-color: var(--border-strong);
  color: var(--text-muted);
}
.gantt__scale { display: grid; grid-template-columns: 150px minmax(0, 1fr); gap: 20px; margin-top: 14px; }
.gantt__ticks { display: flex; justify-content: space-between; font-family: var(--f-mono); font-size: 12px; color: var(--text-muted); letter-spacing: 0.06em; }

/* --------------------------------------------------------------------------
   11. Case study
   -------------------------------------------------------------------------- */
.case { display: grid; grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr); gap: clamp(36px, 5vw, 72px); }
.case__result {
  margin-top: 28px;
  padding: 22px;
  background: var(--bg-surface);
  border: var(--hairline) solid var(--border);
  border-left: 2px solid var(--accent);
  border-radius: 0 var(--r-card) var(--r-card) 0;
  font-size: 17px;
  color: var(--text-heading);
  line-height: 1.6;
}
.factstrip { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.case__side { display: grid; gap: 26px; }
.case__resultwrap { }

/* 手机 mockup — 商店详情页 + 徽章环绕 */
.case__visual {
  position: relative;
  padding: 30px 46px 26px;
  display: flex;
  justify-content: center;
}
.halo {
  position: absolute;
  top: 50%;
  left: 50%;
  width: min(430px, 92%);
  aspect-ratio: 1;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(94, 234, 212, 0.10) 0%, rgba(94, 234, 212, 0.035) 42%, transparent 68%);
  pointer-events: none;
}
.orbit-badge {
  position: absolute;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border-radius: 999px;
  background: var(--bg-surface-2);
  border: var(--hairline) solid var(--border-strong);
  font-family: var(--f-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-heading);
  white-space: nowrap;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}
.orbit-badge i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  flex: none;
}
.orbit-badge i.prog { background: none; border: 1.5px solid var(--text-muted); }
.ob1 { top: 4%; left: 0; }
.ob2 { top: 14%; right: 0; }
.ob3 { top: 38%; left: -8px; }
.ob4 { top: 44%; right: -8px; }
.ob5 { bottom: 22%; left: 2%; }
.ob6 { bottom: 10%; right: 2%; }
.ob7 { bottom: -2%; left: 50%; transform: translateX(-50%); }

.phone {
  background: var(--bg-surface);
  border: var(--hairline) solid var(--border);
  border-radius: var(--r-card);
  padding: 26px;
  display: flex;
  justify-content: center;
}
.phone__frame {
  width: 252px;
  border: 0.5px solid var(--border-strong);
  border-radius: 26px;
  padding: 14px;
  background: var(--bg-page);
}
.phone__notch { width: 74px; height: 4px; border-radius: 4px; background: var(--border-strong); margin: 0 auto 16px; }
.ps__top { display: flex; gap: 12px; align-items: center; }
.ps__icon {
  width: 54px;
  height: 54px;
  border-radius: 13px;
  background: var(--accent);
  color: var(--accent-ink);
  display: grid;
  place-items: center;
  font-family: var(--f-display);
  font-size: 24px;
  font-weight: 500;
  flex: none;
}
.ps__name { font-size: 16px; color: var(--text-heading); font-weight: 500; line-height: 1.25; }
.ps__dev { font-size: 13px; color: var(--text-muted); margin-top: 3px; }
.ps__btn {
  margin-top: 16px;
  height: 34px;
  border-radius: 17px;
  background: var(--accent);
  color: var(--accent-ink);
  display: grid;
  place-items: center;
  font-size: 14px;
  font-weight: 500;
}
.ps__meta { display: flex; justify-content: space-between; gap: 10px; margin-top: 18px; padding-top: 14px; border-top: var(--hairline) solid var(--border); }
.ps__meta div { text-align: center; }
.ps__meta b { display: block; font-family: var(--f-mono); font-size: 14px; color: var(--text-heading); font-weight: 400; }
.ps__meta span { display: block; font-family: var(--f-mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-muted); margin-top: 4px; }
.ps__rows { margin-top: 16px; padding-top: 14px; border-top: var(--hairline) solid var(--border); }
.ps__rows li { display: flex; justify-content: space-between; gap: 10px; font-size: 13px; color: var(--text-body); padding: 6px 0; }
.ps__rows li span:last-child { font-family: var(--f-mono); font-size: 12px; color: var(--accent); }

/* --------------------------------------------------------------------------
   12. Pricing
   -------------------------------------------------------------------------- */
.ptable { margin-top: 40px; }
.ptable th, .ptable td {
  text-align: left;
  padding: 22px 18px 22px 0;
  border-bottom: var(--hairline) solid var(--border);
  vertical-align: baseline;
}
.ptable th {
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 400;
  padding-top: 0;
}
.ptable td.svc { color: var(--text-heading); font-size: 17px; }
.ptable td.svc small { display: block; color: var(--text-muted); font-size: 15px; margin-top: 5px; font-family: var(--f-body); max-width: 56ch; }
.ptable td.tl { font-family: var(--f-mono); font-size: 14px; color: var(--text-body); white-space: nowrap; }
.ptable td.pr { font-family: var(--f-mono); font-size: 18px; color: var(--accent); text-align: right; white-space: nowrap; padding-right: 0; }
.ptable th.pr { text-align: right; padding-right: 0; }

/* --------------------------------------------------------------------------
   13. FAQ
   -------------------------------------------------------------------------- */
.faq { margin-top: 8px; }
.faq details { border-bottom: var(--hairline) solid var(--border); }
.faq summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  padding: 26px 0;
  cursor: pointer;
  list-style: none;
  color: var(--text-heading);
  font-family: var(--f-display);
  font-size: 19px;
  font-weight: 500;
  letter-spacing: -0.012em;
  line-height: 1.4;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary i {
  flex: none;
  width: 12px;
  height: 12px;
  margin-top: 8px;
  position: relative;
  transition: transform 0.18s var(--ease);
}
.faq summary i::before,
.faq summary i::after {
  content: "";
  position: absolute;
  background: var(--text-muted);
}
.faq summary i::before { left: 0; top: 5.5px; width: 12px; height: var(--hairline); }
.faq summary i::after { top: 0; left: 5.5px; height: 12px; width: var(--hairline); }
.faq details[open] summary i { transform: rotate(45deg); }
.faq__a { padding: 0 0 28px; max-width: 74ch; }
.faq__a p + p { margin-top: 14px; }

/* --------------------------------------------------------------------------
   14. Final CTA
   -------------------------------------------------------------------------- */
.final { padding: clamp(88px, 11vw, 190px) 0; }
.final h2 { font-size: clamp(30px, 3.8vw, 50px); }
.final__cta { margin-top: 34px; display: flex; flex-wrap: wrap; align-items: center; gap: 18px 24px; }

/* --------------------------------------------------------------------------
   15. Footer
   -------------------------------------------------------------------------- */
.foot { border-top: var(--hairline) solid var(--border); padding: 64px 0 44px; }
.foot__grid { display: grid; grid-template-columns: minmax(0, 1.5fr) repeat(3, minmax(0, 1fr)); gap: 36px; }
.foot h4 { font-family: var(--f-mono); font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--text-muted); font-weight: 400; }
.foot ul { margin-top: 18px; }
.foot li + li { margin-top: 11px; }
.foot a { font-size: 15px; color: var(--text-body); transition: color 0.16s var(--ease); }
.foot a:hover { color: var(--text-heading); }
.foot__brand p { margin-top: 18px; font-size: 15px; max-width: 34ch; }
.foot__legal {
  margin-top: 52px;
  padding-top: 26px;
  border-top: var(--hairline) solid var(--border);
  display: flex;
  flex-wrap: wrap;
  gap: 12px 26px;
  justify-content: space-between;
  font-size: 14px;
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   16. Motion
   -------------------------------------------------------------------------- */
html.js .reveal { opacity: 1; }
@media (prefers-reduced-motion: no-preference) {
  html.js .reveal {
    opacity: 0;
    transform: translateY(16px);
  }
  html.js .reveal.in {
    opacity: 1;
    transform: none;
    transition: opacity 0.5s var(--ease) var(--d, 0ms), transform 0.5s var(--ease) var(--d, 0ms);
  }
}

/* --------------------------------------------------------------------------
   17. Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 1080px) {
  .nav__links { display: none; }
  .nav__cta .btn--ghost { display: none; }
  .burger { display: grid; }
  .hero__grid { grid-template-columns: minmax(0, 1fr); }
  .hero__art { max-width: 620px; }
  .g4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .storewall__in { grid-template-columns: minmax(0, 1fr); gap: 20px; }
}

@media (max-width: 900px) {
  .g3 { grid-template-columns: minmax(0, 1fr); }
  .case { grid-template-columns: minmax(0, 1fr); }
  .mats { grid-template-columns: minmax(0, 1fr); }
  .paths { grid-template-columns: minmax(0, 1fr); }
  .flow { grid-template-columns: minmax(0, 1fr); }
  .flow::before { top: 7px; bottom: 7px; left: 7px; right: auto; width: var(--hairline); height: auto; }
  .flow__step { padding: 0 0 34px 38px; }
  .flow__step:last-child { padding-bottom: 0; }
  .foot__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .gantt { padding: 8px 20px 20px; }
  .gantt__lane, .gantt__scale { grid-template-columns: minmax(0, 1fr); gap: 10px; }
  .gantt__track { height: 34px; }
}

@media (max-width: 640px) {
  .wrap { padding: 0 20px; }
  .nav__in { gap: 16px; }
  .nav__cta { display: none; }
  .brand__name { font-size: 15px; }
  .hero { padding-top: calc(var(--nav-h) + 48px); }
  .g2 { grid-template-columns: minmax(0, 1fr); }
  .g4 { grid-template-columns: minmax(0, 1fr); }
  .card { padding: 24px; }
  .mat { padding: 24px; }
  .fcard { padding: 24px; }
  .path { padding: 24px; }
  .posline { flex-direction: column; gap: 10px; }
  .ptable { font-size: 15px; }
  .ptable th:nth-child(2), .ptable td:nth-child(2) { display: none; }
  .ptable td { padding: 18px 12px 18px 0; }
  .ptable td.pr { font-size: 16px; }
  .stores { gap: 12px 20px; }
  .store { font-size: 15px; }
  .store b { width: 28px; height: 28px; border-radius: 7px; font-size: 13px; }
  .case__visual { flex-wrap: wrap; gap: 10px 8px; padding: 22px 0 30px; }
  .case__visual .phone { width: 100%; }
  .orbit-badge { position: static; transform: none; }
  .ob5, .ob7 { display: inline-flex; }
  .ob1, .ob2, .ob3, .ob4, .ob6 { top: auto; right: auto; bottom: auto; left: auto; }
  .bar { font-size: 12px; padding: 0 8px; }
  .foot__grid { grid-template-columns: minmax(0, 1fr); gap: 32px; }
  .foot__legal { flex-direction: column; }
}