/* ============================================================
   序野 Studio · 站点样式
   设计基准：深色首屏 + 浅色内容区 / 单一强调色 / 移动优先
   ============================================================ */

:root {
  --ink: #121316;
  --ink-soft: #2a2b30;
  --muted: #6b6c6a;
  --muted-2: #68695f;
  --paper: #f6f5f1;
  --paper-2: #efeee8;
  --white: #ffffff;
  --line: #e3e1d8;
  --line-dark: rgba(255, 255, 255, 0.1);
  --accent: #ff5a2b;
  --accent-text: #b93c12;
  --accent-soft: #fff0ea;
  --accent-ink: #ffffff;
  --dark: #0b0c0e;
  --dark-2: #141518;
  --dark-3: #1c1d21;
  --green: #1f8a5b;
  --radius-s: 8px;
  --radius-m: 14px;
  --radius-l: 22px;
  --header-h: 72px;
  --maxw: 1240px;
  --pad: clamp(20px, 5vw, 56px);
  --shadow: 0 24px 60px -30px rgba(18, 19, 22, 0.35);
  --ease: cubic-bezier(0.22, 0.7, 0.24, 1);
  --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "SFMono-Regular", Consolas, "Courier New", monospace;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.no-scroll { overflow: hidden; }

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, p { margin: 0; }
svg { display: block; }

::selection { background: var(--accent); color: #fff; }

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

.skip-link {
  position: absolute;
  left: 16px;
  top: -60px;
  z-index: 200;
  background: var(--accent);
  color: #fff;
  padding: 10px 18px;
  border-radius: 6px;
  transition: top 0.2s;
}
.skip-link:focus { top: 12px; }

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--pad);
}

.section {
  padding: clamp(64px, 9vw, 128px) 0;
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: clamp(32px, 5vw, 56px);
}

.section-head p { max-width: 420px; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent-text);
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: currentColor;
}

.eyebrow.on-dark { color: #ff8a66; }

.h1 {
  font-size: clamp(38px, 6.4vw, 78px);
  line-height: 1.06;
  letter-spacing: -0.035em;
  font-weight: 800;
}

.h2 {
  font-size: clamp(28px, 4.2vw, 52px);
  line-height: 1.16;
  letter-spacing: -0.03em;
  font-weight: 800;
}

.h3 {
  font-size: clamp(20px, 2.4vw, 28px);
  line-height: 1.3;
  letter-spacing: -0.02em;
  font-weight: 700;
}

.lead {
  font-size: clamp(15px, 1.3vw, 18px);
  line-height: 1.9;
  color: var(--muted);
}

.muted { color: var(--muted); }
.small { font-size: 12px; }
.mono { font-family: var(--mono); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  height: 52px;
  padding: 0 26px;
  border-radius: 10px;
  border: 1px solid transparent;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.01em;
  white-space: nowrap;
  cursor: pointer;
  transition: transform 0.25s var(--ease), background 0.25s, border-color 0.25s, color 0.25s, box-shadow 0.25s;
}

.btn svg { width: 16px; height: 16px; }
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 12px 26px -12px rgba(255, 90, 43, 0.7);
}
.btn-primary:hover { background: #ff6d43; box-shadow: 0 16px 34px -12px rgba(255, 90, 43, 0.8); }

.btn-dark { background: var(--ink); color: #fff; }
.btn-dark:hover { background: #26272c; }

.btn-ghost {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.24);
  color: #f4f3ee;
}
.btn-ghost:hover { border-color: rgba(255, 255, 255, 0.55); background: rgba(255, 255, 255, 0.05); }

.btn-light {
  background: var(--white);
  border-color: var(--line);
  color: var(--ink);
}
.btn-light:hover { border-color: #c9c6bb; }

.btn-sm { height: 42px; padding: 0 18px; font-size: 13px; border-radius: 8px; }

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 13px;
  font-weight: 700;
  border-bottom: 1px solid currentColor;
  padding-bottom: 3px;
  transition: gap 0.25s var(--ease), color 0.2s;
}
.link-arrow:hover { gap: 12px; color: var(--accent); }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  transition: background 0.3s, border-color 0.3s, backdrop-filter 0.3s;
  border-bottom: 1px solid transparent;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

body[data-header="dark"] .site-header { color: #f3f2ed; }
body[data-header="dark"] .site-header.is-solid {
  background: rgba(11, 12, 14, 0.86);
  backdrop-filter: blur(14px);
  border-bottom-color: rgba(255, 255, 255, 0.08);
}
body[data-header="dark"] .site-header:not(.is-solid) {
  background: linear-gradient(to bottom, rgba(8, 9, 10, 0.5), transparent);
}

body[data-header="light"] .site-header {
  background: rgba(246, 245, 241, 0.9);
  backdrop-filter: blur(14px);
  border-bottom-color: var(--line);
  color: var(--ink);
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 9px;
  font-weight: 800;
  letter-spacing: 0.06em;
  font-size: 18px;
}

.brand-mark {
  width: 26px;
  height: 26px;
  border-radius: 7px;
  background: var(--accent);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  transform: translateY(2px);
}

.brand small {
  font-size: 9px;
  letter-spacing: 0.26em;
  font-weight: 600;
  opacity: 0.55;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 34px;
  font-size: 14px;
  font-weight: 500;
}

.main-nav a {
  position: relative;
  padding: 6px 0;
  opacity: 0.82;
  transition: opacity 0.2s;
}
.main-nav a:hover { opacity: 1; }

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1.5px;
  background: var(--accent);
  transition: width 0.3s var(--ease);
}
.main-nav a:hover::after,
.main-nav a[aria-current="page"]::after { width: 100%; }

.main-nav a[aria-current="page"] { opacity: 1; }

.header-actions { display: flex; align-items: center; gap: 14px; }

.header-cta {
  height: 42px;
  padding: 0 18px;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  transition: background 0.2s, transform 0.2s;
}
.header-cta:hover { background: #ff6d43; transform: translateY(-1px); }

.burger {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid currentColor;
  border-radius: 8px;
  background: transparent;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  opacity: 0.85;
}
.burger i {
  display: block;
  width: 18px;
  height: 1.5px;
  background: currentColor;
  transition: transform 0.3s, opacity 0.3s;
}
.burger[aria-expanded="true"] i:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.burger[aria-expanded="true"] i:nth-child(2) { opacity: 0; }
.burger[aria-expanded="true"] i:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ---------- 移动端抽屉 ---------- */
.drawer {
  position: fixed;
  inset: 0;
  z-index: 150;
  display: none;
}

.drawer.is-open { display: block; }

.drawer-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(6, 7, 8, 0.6);
  backdrop-filter: blur(4px);
  opacity: 0;
  transition: opacity 0.3s;
}
.drawer.is-open .drawer-backdrop { opacity: 1; }

.drawer-panel {
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: min(88vw, 380px);
  background: var(--dark);
  color: #f3f2ed;
  padding: 24px 26px 32px;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.4s var(--ease);
  overflow-y: auto;
}
.drawer.is-open .drawer-panel { transform: none; }

.drawer-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--line-dark);
}

.drawer-close {
  width: 40px;
  height: 40px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  background: transparent;
  color: #fff;
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
}

.drawer-nav {
  display: flex;
  flex-direction: column;
  padding: 18px 0;
}

.drawer-nav a {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.02em;
  padding: 16px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.drawer-nav a span { font-size: 11px; color: #777; letter-spacing: 0.1em; }

.drawer-foot {
  margin-top: auto;
  padding-top: 22px;
  font-size: 12px;
  color: #8f8f8a;
  line-height: 2;
}
.drawer-foot .btn { width: 100%; margin-bottom: 16px; }

/* ---------- 首页首屏 ---------- */
.hero {
  position: relative;
  background: var(--dark);
  color: #f4f3ee;
  overflow: hidden;
  padding: calc(var(--header-h) + clamp(36px, 6vw, 72px)) 0 clamp(56px, 7vw, 92px);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(70% 60% at 82% 10%, rgba(255, 90, 43, 0.2), transparent 60%),
    radial-gradient(50% 50% at 0% 100%, rgba(255, 255, 255, 0.055), transparent 65%);
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 96px 96px;
  mask-image: radial-gradient(80% 70% at 60% 20%, #000 10%, transparent 75%);
  pointer-events: none;
}

.hero > .container {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.02fr 0.98fr;
  gap: clamp(32px, 4vw, 60px);
  align-items: center;
}

.hero-copy { max-width: 560px; }

.hero h1 {
  margin: 22px 0 24px;
  font-size: clamp(40px, 5.6vw, 74px);
  line-height: 1.05;
  letter-spacing: -0.04em;
  font-weight: 800;
}

.hero h1 .accent {
  color: var(--accent);
  position: relative;
  white-space: nowrap;
}

.hero h1 .accent::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0.02em;
  height: 0.08em;
  background: currentColor;
  opacity: 0.35;
  transform: scaleX(0);
  transform-origin: left;
  animation: underline 0.9s 0.45s var(--ease) forwards;
}

@keyframes underline { to { transform: scaleX(1); } }

.hero-sub {
  font-size: clamp(14px, 1.2vw, 16px);
  line-height: 1.95;
  color: #a8a8a2;
  max-width: 470px;
}

.hero-sub strong { color: #e7e5de; font-weight: 600; }

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-top: 34px;
}

.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin-top: 38px;
  padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 12px;
  color: #8e8e88;
}

.hero-trust span { display: inline-flex; align-items: center; gap: 7px; }
.hero-trust svg { width: 13px; height: 13px; color: var(--accent); flex: none; }

/* 首屏设备预览 */
.stage {
  position: relative;
  width: 100%;
  max-width: 600px;
  margin-left: auto;
  padding: 0 0 62px 34px;
}

.stage-browser {
  position: relative;
  z-index: 1;
  border-radius: 12px;
  background: #191a1e;
  border: 1px solid rgba(255, 255, 255, 0.13);
  box-shadow: 0 50px 90px -40px rgba(0, 0, 0, 0.9), 0 0 0 1px rgba(0, 0, 0, 0.4);
  overflow: hidden;
}

.browser-bar {
  height: 30px;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 12px;
  background: #202126;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.browser-bar i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #3b3d42;
  flex: none;
}

.browser-bar .url {
  margin-left: 10px;
  flex: 1;
  height: 16px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.06);
  font-size: 8px;
  color: #77787c;
  display: flex;
  align-items: center;
  padding: 0 8px;
  letter-spacing: 0.04em;
  overflow: hidden;
  white-space: nowrap;
}

.stage-screen {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: #d9d5cc;
}

.stage-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.55s ease;
  pointer-events: none;
}
.stage-slide.is-active { opacity: 1; z-index: 1; }

.stage-slide img {
  width: 100%;
  height: auto;
  transform: translateY(0);
  will-change: transform;
}

.stage-slide.is-active .scroll-shot {
  animation: shotScroll 28s ease-in-out infinite;
}

@keyframes shotScroll {
  0%, 7% { transform: translateY(0); }
  46%, 54% { transform: translateY(var(--dist, 0px)); }
  93%, 100% { transform: translateY(0); }
}

.stage-phone {
  position: absolute;
  right: -24px;
  bottom: 24px;
  z-index: 3;
  width: 152px;
  border-radius: 24px;
  border: 6px solid #1d1e22;
  background: #1d1e22;
  box-shadow: 0 30px 60px -18px rgba(0, 0, 0, 0.85);
  overflow: hidden;
}

.stage-phone::before {
  content: "";
  position: absolute;
  top: 7px;
  left: 50%;
  transform: translateX(-50%);
  width: 44px;
  height: 5px;
  border-radius: 4px;
  background: #3a3c42;
  z-index: 3;
}

.phone-screen {
  position: relative;
  aspect-ratio: 9 / 19;
  overflow: hidden;
  background: #111;
  border-radius: 18px;
}

.phone-screen img { display: block; width: 100%; height: auto; }

.phone-screen img.scroll-shot { animation: shotScroll 34s ease-in-out infinite; }

@media (prefers-reduced-motion: reduce) {
  .phone-screen img.scroll-shot { animation: none; }
}

.stage-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 22px;
  padding-left: 34px;
  padding-right: 150px;
}

.stage-caption {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
}

.stage-caption b { font-size: 14px; font-weight: 700; color: #eceae4; }
.stage-caption span { font-size: 11px; color: #82827c; letter-spacing: 0.04em; }

.stage-dots { display: flex; gap: 7px; }
.stage-dots button {
  width: 26px;
  height: 3px;
  border: 0;
  padding: 0;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.18);
  cursor: pointer;
  transition: background 0.3s;
}
.stage-dots button.is-active { background: var(--accent); }

.stage-note {
  position: absolute;
  right: 0;
  top: -30px;
  font-size: 10px;
  letter-spacing: 0.16em;
  color: #6f6f6a;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.stage-note::before { content: ""; width: 5px; height: 5px; border-radius: 50%; background: var(--green); }

/* ---------- 在线案例墙 ---------- */
.case-wall { background: var(--paper); }

.wall-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(18px, 2.4vw, 28px);
}

.wall-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.35s var(--ease), box-shadow 0.35s, border-color 0.35s;
}

.wall-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: #d2cfc5;
}

/* 5 个案例：桌面 3 + 2 居中，卡片尺寸完全一致，末行不留空洞 */
@media (min-width: 1100px) {
  .wall-grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }
  .wall-grid > .wall-card { grid-column: span 2; }
  .wall-grid > .wall-card:nth-child(4) { grid-column: 2 / span 2; }
  .wall-grid > .wall-card:nth-child(5) { grid-column: 4 / span 2; }
}

/* 769–1099：两列，最后一张居中占半宽，避免单卡孤悬 */
@media (min-width: 769px) and (max-width: 1099px) {
  .wall-grid > .wall-card:last-child:nth-child(5) {
    grid-column: 1 / -1;
    width: calc((100% - clamp(18px, 2.4vw, 28px)) / 2);
    justify-self: center;
  }
}

.wall-media { position: relative; display: block; min-width: 0; }

.wall-bar {
  height: 30px;
  background: #f1efe9;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 0 12px;
}
.wall-bar i { width: 6px; height: 6px; border-radius: 50%; background: #cfcabd; }
.wall-bar span {
  margin-left: 8px;
  font-size: 10px;
  color: var(--muted-2);
  font-family: var(--mono);
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.wall-shot {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: #e8e4db;
}

.wall-shot img {
  width: 100%;
  height: auto;
  transform: translateY(0);
  transition: transform 1s var(--ease);
  will-change: transform;
}

.wall-card:hover .wall-shot img {
  transform: translateY(var(--dist, 0px));
  transition-duration: var(--dur, 9s);
  transition-timing-function: linear;
}

.wall-badge {
  position: absolute;
  right: 12px;
  top: 42px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(6px);
  font-size: 10px;
  font-weight: 700;
  color: #254e3a;
  box-shadow: 0 6px 16px -10px rgba(0, 0, 0, 0.5);
  z-index: 2;
}
.wall-badge i {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 0 rgba(31, 138, 91, 0.5);
  animation: pulse 2.4s infinite;
}

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(31, 138, 91, 0.45); }
  70% { box-shadow: 0 0 0 6px rgba(31, 138, 91, 0); }
  100% { box-shadow: 0 0 0 0 rgba(31, 138, 91, 0); }
}

.wall-body {
  padding: 20px 22px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-width: 0;
}

.wall-title { display: flex; flex-direction: column; gap: 5px; min-width: 0; }
.wall-title b { font-size: 17px; letter-spacing: -0.01em; }
.wall-title span { font-size: 11px; color: var(--muted-2); display: flex; align-items: center; gap: 8px; }

.tag {
  display: inline-flex;
  align-items: center;
  height: 22px;
  padding: 0 8px;
  border-radius: 5px;
  font-size: 10px;
  letter-spacing: 0.04em;
  background: var(--paper-2);
  color: #6d6a5f;
  font-weight: 600;
}

.tag-sample {
  background: transparent;
  border: 1px dashed #cfc9ba;
  color: #6d6a5f;
}

.wall-arrow {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  flex: none;
  transition: background 0.25s, border-color 0.25s, transform 0.25s;
}
.wall-arrow svg { width: 14px; height: 14px; }
.wall-card:hover .wall-arrow { background: var(--accent); border-color: var(--accent); transform: rotate(-45deg); }
.wall-card:hover .wall-arrow svg { color: #fff; }

.wall-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 28px;
}

.sample-note {
  display: inline-flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 11px;
  line-height: 1.7;
  color: var(--muted-2);
  max-width: 640px;
}
.sample-note::before {
  content: "!";
  flex: none;
  width: 15px;
  height: 15px;
  margin-top: 1px;
  border-radius: 50%;
  border: 1px solid #c9c3b4;
  color: #a29a89;
  font-size: 9px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* ---------- 扫码体验 ---------- */
.qr-section { background: var(--paper); padding-top: 0; }

.qr-panel {
  position: relative;
  background: var(--dark-2);
  color: #f2f1ec;
  border-radius: var(--radius-l);
  padding: clamp(30px, 4.6vw, 56px);
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: clamp(28px, 4vw, 56px);
  align-items: center;
  overflow: hidden;
}

.qr-panel::before {
  content: "";
  position: absolute;
  width: 420px;
  height: 420px;
  right: -120px;
  top: -180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 90, 43, 0.22), transparent 65%);
  pointer-events: none;
}

.qr-copy { position: relative; }
.qr-copy h2 { margin: 18px 0 16px; }
.qr-copy p { color: #9d9d97; font-size: 14px; line-height: 1.9; max-width: 420px; }

.qr-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 28px;
}

.qr-chip {
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: transparent;
  color: #b7b7b1;
  border-radius: 7px;
  padding: 8px 13px;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s;
}
.qr-chip:hover { border-color: rgba(255, 255, 255, 0.4); color: #fff; }
.qr-chip.is-active { background: var(--accent); border-color: var(--accent); color: #fff; }

.qr-card {
  position: relative;
  background: #fff;
  color: var(--ink);
  border-radius: 16px;
  padding: 24px;
  text-align: center;
  box-shadow: 0 30px 60px -30px rgba(0, 0, 0, 0.6);
}

.qr-box {
  width: 188px;
  height: 188px;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.qr-box svg { width: 100%; height: 100%; }
.qr-box .qr-placeholder {
  width: 100%;
  height: 100%;
  border-radius: 8px;
  background: repeating-linear-gradient(45deg, #f2f0eb 0 8px, #faf9f5 8px 16px);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  color: #aaa49a;
}

.qr-card b { display: block; font-size: 15px; margin-bottom: 4px; }
.qr-card .qr-url {
  display: block;
  font-family: var(--mono);
  font-size: 10px;
  color: #9a958a;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.qr-card .qr-hint {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-size: 10px;
  color: #aaa49a;
  letter-spacing: 0.04em;
}

/* ---------- 对比表 ---------- */
.compare-wrap {
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  overflow: hidden;
  background: var(--white);
}

.compare-row {
  display: grid;
  grid-template-columns: 0.85fr 1.35fr 1.35fr;
  border-bottom: 1px solid var(--line);
}
.compare-row:last-child { border-bottom: 0; }

.compare-row > div {
  padding: 18px 24px;
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 9px;
  line-height: 1.7;
}

.compare-row > div + div { border-left: 1px solid var(--line); }

.compare-head { background: var(--paper); }
.compare-head > div { font-size: 12px; font-weight: 700; letter-spacing: 0.06em; }
.compare-head .us {
  background: var(--accent-soft);
  color: #b23d18;
  justify-content: space-between;
}
.compare-head .us em {
  font-style: normal;
  font-size: 9px;
  background: var(--accent);
  color: #fff;
  padding: 2px 6px;
  border-radius: 4px;
  letter-spacing: 0.08em;
}

.compare-label { font-weight: 600; color: #34352f; background: #fbfaf7; }

.compare-cell { color: #474842; }
.compare-cell svg { width: 15px; height: 15px; flex: none; }
.compare-cell.us svg { color: var(--green); }
.compare-cell.them { color: #8a8a83; }
.compare-cell.them svg { color: #c2c0b6; }

/* ---------- 套餐报价 ---------- */
.plans {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  align-items: stretch;
}

.plan {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  padding: 30px 28px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform 0.3s var(--ease), box-shadow 0.3s;
}

.plan:hover { transform: translateY(-4px); box-shadow: var(--shadow); }

.plan.featured {
  background: var(--dark-2);
  color: #f4f3ee;
  border-color: var(--dark-2);
  box-shadow: var(--shadow);
}

.plan-badge {
  position: absolute;
  top: 18px;
  right: 18px;
  background: var(--accent);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 5px 9px;
  border-radius: 5px;
}

.plan-name { font-size: 14px; font-weight: 700; letter-spacing: 0.04em; }
.plan-name span { display: block; font-size: 10px; color: var(--muted-2); letter-spacing: 0.16em; margin-top: 4px; }
.plan.featured .plan-name span { color: #7e7f7a; }

.plan-price {
  font-size: 40px;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin: 20px 0 6px;
  line-height: 1.1;
}
.plan-price small { font-size: 13px; font-weight: 500; color: var(--muted-2); margin-left: 4px; letter-spacing: 0; }
.plan.featured .plan-price small { color: #8c8d87; }

.plan-fit { font-size: 12px; color: var(--muted); line-height: 1.8; min-height: 44px; }
.plan.featured .plan-fit { color: #9c9d97; }

.plan-list {
  margin: 22px 0 26px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 11px;
  flex: 1;
}
.plan.featured .plan-list { border-top-color: rgba(255, 255, 255, 0.12); }

.plan-list li {
  font-size: 12.5px;
  line-height: 1.6;
  color: #4b4c46;
  display: flex;
  gap: 9px;
  align-items: flex-start;
}
.plan.featured .plan-list li { color: #c4c4bd; }

.plan-list svg { width: 13px; height: 13px; margin-top: 3px; flex: none; color: var(--accent); }

.plan .btn { width: 100%; }

.plan-note {
  margin-top: 16px;
  font-size: 10.5px;
  color: var(--muted-2);
  line-height: 1.7;
  text-align: center;
}
.plan.featured .plan-note { color: #85867f; }

.pricing-foot {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 30px;
  margin-top: 24px;
  font-size: 11.5px;
  color: var(--muted-2);
  line-height: 1.8;
}
.pricing-foot p { max-width: 720px; }

.anchor-price {
  border: 1px solid var(--line);
  background: #fbfaf6;
  border-radius: 10px;
  padding: 12px 16px;
  font-size: 11px;
  color: #6f6b5e;
  white-space: nowrap;
}
.anchor-price b { color: var(--ink); }

/* ---------- 交付流程 ---------- */
.process { background: var(--paper-2); }

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  counter-reset: step;
}

.step {
  position: relative;
  padding-top: 26px;
  border-top: 1px solid #d7d4c9;
}

.step-no {
  font-size: 12px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.16em;
  font-family: var(--mono);
}

.step h3 { font-size: 19px; margin: 14px 0 10px; letter-spacing: -0.01em; }
.step p { font-size: 12.5px; color: var(--muted); line-height: 1.9; }

.step-meta {
  display: inline-flex;
  margin-top: 16px;
  font-size: 10px;
  letter-spacing: 0.08em;
  color: #8d8a7e;
  border: 1px solid #d7d4c9;
  border-radius: 5px;
  padding: 3px 8px;
}

/* ---------- 为什么选我 ---------- */
.why-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.why-item {
  display: flex;
  gap: 18px;
  padding: 28px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  transition: border-color 0.25s, transform 0.25s;
}
.why-item:hover { border-color: #cfccc1; transform: translateY(-2px); }

.why-icon {
  width: 44px;
  height: 44px;
  border-radius: 11px;
  background: var(--accent-soft);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex: none;
  transition: transform 0.4s var(--ease);
}
.why-icon svg { width: 20px; height: 20px; }
.why-item:hover .why-icon { transform: rotate(-6deg) scale(1.06); }

.why-item h3 { font-size: 16px; margin-bottom: 6px; }
.why-item p { font-size: 12.5px; color: var(--muted); line-height: 1.85; }

/* ---------- 客户评价 ---------- */
.quotes { background: var(--paper-2); }

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

.quote-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  padding: 28px;
  display: flex;
  flex-direction: column;
}

.quote-mark {
  font-size: 34px;
  line-height: 1;
  color: var(--accent);
  font-family: Georgia, serif;
  margin-bottom: 12px;
}

.quote-card p { font-size: 13px; line-height: 1.95; color: #474842; flex: 1; }

.quote-who {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}
.quote-avatar {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: #e9e6dc;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  color: #8a8577;
}
.quote-who b { display: block; font-size: 11.5px; }
.quote-who span { display: block; font-size: 10px; color: var(--muted-2); }

/* ---------- FAQ ---------- */
.faq { max-width: 880px; margin: 0 auto; border-top: 1px solid var(--line); }

.faq details { border-bottom: 1px solid var(--line); }

.faq summary {
  list-style: none;
  cursor: pointer;
  padding: 22px 44px 22px 0;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.01em;
  position: relative;
  display: flex;
  align-items: center;
  gap: 14px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "";
  position: absolute;
  right: 4px;
  top: 50%;
  width: 11px;
  height: 11px;
  border-right: 1.5px solid var(--muted);
  border-bottom: 1.5px solid var(--muted);
  transform: translateY(-70%) rotate(45deg);
  transition: transform 0.3s var(--ease);
}
.faq details[open] summary::after { transform: translateY(-30%) rotate(-135deg); }

.faq summary .q-no {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--accent-text);
  letter-spacing: 0.1em;
  flex: none;
}

.faq-body {
  padding: 0 44px 24px 0;
  font-size: 13px;
  line-height: 1.95;
  color: var(--muted);
  max-width: 760px;
}

/* ---------- 底部 CTA ---------- */
.contact-band {
  background: var(--dark);
  color: #f3f2ed;
  padding: clamp(56px, 8vw, 104px) 0;
  position: relative;
  overflow: hidden;
}

.contact-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(50% 60% at 85% 20%, rgba(255, 90, 43, 0.16), transparent 65%);
  pointer-events: none;
}

.contact-band .container {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(32px, 5vw, 64px);
  align-items: start;
}

.contact-copy h2 { margin: 18px 0 18px; }
.contact-copy > p { color: #9c9c96; font-size: 14px; line-height: 1.9; max-width: 420px; }

.contact-points {
  margin-top: 30px;
  display: flex;
  flex-direction: column;
  gap: 13px;
}
.contact-points li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12.5px;
  color: #b9b9b2;
}
.contact-points svg { width: 15px; height: 15px; color: var(--accent); flex: none; }

.wechat-card {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-top: 32px;
  padding: 16px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.03);
  max-width: 360px;
}
.wechat-card img {
  width: 88px;
  height: 88px;
  border-radius: 6px;
  background: #fff;
  padding: 5px;
  object-fit: contain;
}
.wechat-card b { display: block; font-size: 12.5px; margin-bottom: 4px; }
.wechat-card span { display: block; font-size: 10.5px; color: #8c8d87; line-height: 1.7; }

.inquiry-form {
  background: var(--dark-2);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-m);
  padding: clamp(22px, 3vw, 32px);
}

.form-title { font-size: 13px; font-weight: 700; margin-bottom: 20px; display: flex; justify-content: space-between; align-items: center; }
.form-title span { font-size: 10px; color: #7f807a; font-weight: 500; letter-spacing: 0.04em; }

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.field { display: flex; flex-direction: column; gap: 6px; }
.field.full { grid-column: 1 / -1; }

.field label { font-size: 10.5px; letter-spacing: 0.08em; color: #8e8f88; }
.field label em { font-style: normal; color: var(--accent); }

.field input,
.field select,
.field textarea {
  width: 100%;
  background: #1a1b1f;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 7px;
  color: #f1f0ea;
  padding: 12px 13px;
  font-family: inherit;
  font-size: 13px;
  line-height: 1.4;
  transition: border-color 0.2s, background 0.2s;
  appearance: none;
}

.field select {
  background-image: linear-gradient(45deg, transparent 50%, #8e8f88 50%), linear-gradient(135deg, #8e8f88 50%, transparent 50%);
  background-position: calc(100% - 17px) 50%, calc(100% - 12px) 50%;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
}

.field textarea { min-height: 84px; resize: vertical; }

.field input::placeholder,
.field textarea::placeholder { color: #61625d; }

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: rgba(255, 90, 43, 0.65);
  background: #1d1e22;
}

.field .err { font-size: 10px; color: #ff8a66; display: none; }
.field.has-error .err { display: block; }
.field.has-error input { border-color: #ff8a66; }

.inquiry-form .btn { width: 100%; margin-top: 16px; }

.form-legal {
  margin-top: 12px;
  font-size: 10px;
  color: #74756f;
  text-align: center;
  line-height: 1.7;
}

.form-success { text-align: center; padding: 10px 0 4px; }
.form-success[hidden] { display: none; }
.form-success .ok-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(31, 138, 91, 0.16);
  color: #4fd39c;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 14px;
}
.form-success h3 { font-size: 18px; margin-bottom: 8px; }
.form-success p { font-size: 12px; color: #9c9d96; line-height: 1.9; }
.form-summary {
  margin: 16px 0;
  background: #1a1b1f;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  padding: 14px;
  font-size: 11px;
  color: #b9b9b3;
  text-align: left;
  line-height: 1.8;
  white-space: pre-wrap;
  word-break: break-word;
}
.form-success .btn { width: 100%; margin-top: 4px; }

/* ---------- 页脚 ---------- */
.site-footer {
  background: #08090a;
  color: #8a8b85;
  padding: 54px 0 30px;
  font-size: 12px;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.8fr;
  gap: 40px;
  padding-bottom: 36px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand b { color: #efeee8; font-size: 18px; letter-spacing: 0.04em; display: flex; align-items: center; gap: 9px; }
.footer-brand p { margin-top: 12px; max-width: 340px; line-height: 1.9; color: #96978f; }

.footer-col h3, .footer-col h4 { color: #cfcec7; font-size: 11px; letter-spacing: 0.16em; margin-bottom: 14px; font-weight: 600; }
.footer-col a, .footer-col span { display: block; padding: 5px 0; color: #8a8b85; transition: color 0.2s; }
.footer-col a:hover { color: #efeee8; }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding-top: 22px;
  font-size: 10.5px;
  color: #8a8b85;
  flex-wrap: wrap;
}

.footer-note {
  margin-top: 14px;
  font-size: 10px;
  color: #8a8b85;
  line-height: 1.8;
  max-width: 760px;
}

/* ---------- 移动端底部联系条 ---------- */
.mobile-bar {
  display: none;
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 90;
  height: 52px;
  background: rgba(11, 12, 14, 0.96);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(12px);
  padding: 6px 12px calc(6px + env(safe-area-inset-bottom));
}

.mobile-bar a,
.mobile-bar button {
  flex: 1;
  height: 40px;
  border-radius: 7px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  font-size: 12.5px;
  font-weight: 700;
  border: 0;
  cursor: pointer;
}
.mobile-bar .bar-wechat { background: #23241f; color: #e9e7df; }
.mobile-bar .bar-cta { background: #c8401a; color: #fff; }
.mobile-bar svg { width: 14px; height: 14px; }

/* ---------- 弹窗 ---------- */
.modal {
  position: fixed;
  inset: 0;
  z-index: 180;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.modal.is-open { display: flex; }

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(5, 6, 7, 0.66);
  backdrop-filter: blur(6px);
}

.modal-panel {
  position: relative;
  width: min(92vw, 360px);
  background: #fff;
  border-radius: 16px;
  padding: 28px 24px 24px;
  text-align: center;
  box-shadow: 0 40px 80px -20px rgba(0, 0, 0, 0.6);
  animation: modalIn 0.3s var(--ease);
}

@keyframes modalIn {
  from { opacity: 0; transform: translateY(10px) scale(0.98); }
  to { opacity: 1; transform: none; }
}

.modal-close {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 30px;
  height: 30px;
  border: 0;
  background: transparent;
  font-size: 18px;
  color: #8d8a80;
  cursor: pointer;
  line-height: 1;
}

.modal-panel h3 { font-size: 17px; margin-bottom: 4px; }
.modal-panel .modal-sub { font-size: 11px; color: #8d8a80; margin-bottom: 18px; }

#modalQr {
  width: 216px;
  height: 216px;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}
#modalQr svg { width: 100%; height: 100%; }

.modal-url {
  font-family: var(--mono);
  font-size: 10px;
  color: #9a958a;
  word-break: break-all;
  line-height: 1.7;
  padding: 0 6px;
}

.modal-tip { margin-top: 12px; font-size: 10.5px; color: #b0aa9d; }

/* ---------- 通用页面头（内页） ---------- */
.page-hero {
  padding: calc(var(--header-h) + clamp(44px, 7vw, 86px)) 0 clamp(30px, 4vw, 48px);
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}

.page-hero .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  color: var(--muted-2);
  margin-bottom: 22px;
}
.page-hero .breadcrumb a:hover { color: var(--accent); }
.page-hero .breadcrumb span { opacity: 0.5; }

.page-hero h1 {
  font-size: clamp(34px, 5.4vw, 64px);
  line-height: 1.1;
  letter-spacing: -0.035em;
  margin: 16px 0 18px;
}

.page-hero .page-lead { max-width: 620px; font-size: 15px; line-height: 1.95; color: var(--muted); }

.notice-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  background: #f3efe3;
  border: 1px dashed #d8d0bc;
  border-radius: 8px;
  font-size: 11px;
  color: #857e6c;
  line-height: 1.7;
  margin-top: 24px;
  max-width: 760px;
}
.notice-bar svg { width: 14px; height: 14px; flex: none; color: #a49a83; }

/* ---------- 案例列表 ---------- */
.works-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  padding: 30px 0 26px;
}

.filters { display: flex; flex-wrap: wrap; gap: 8px; }

.filter {
  border: 1px solid var(--line);
  background: var(--white);
  border-radius: 7px;
  padding: 8px 15px;
  font-size: 12px;
  color: #5d5e57;
  cursor: pointer;
  transition: all 0.2s;
}
.filter:hover { border-color: #c9c5b8; }
.filter.is-active { background: var(--ink); border-color: var(--ink); color: #fff; }

.works-count { font-size: 11px; color: var(--muted-2); font-family: var(--mono); }

.works-grid { padding-bottom: 10px; }
.wall-card.is-hidden { display: none; }

.empty-state {
  display: none;
  padding: 60px 20px;
  text-align: center;
  color: var(--muted-2);
  font-size: 13px;
  border: 1px dashed var(--line);
  border-radius: var(--radius-m);
  background: var(--white);
}
.empty-state.is-visible { display: block; }

/* ---------- 案例详情 ---------- */
.case-hero {
  padding: calc(var(--header-h) + clamp(32px, 5vw, 56px)) 0 clamp(36px, 5vw, 56px);
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}

.case-hero h1 {
  font-size: clamp(32px, 4.8vw, 56px);
  line-height: 1.14;
  letter-spacing: -0.03em;
  margin: 14px 0 16px;
  max-width: 900px;
}

.case-hero h1 span { color: var(--accent); }

.case-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 18px 0 22px;
}

.meta-chip {
  font-size: 11px;
  color: #5d5e57;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 5px 10px;
  display: inline-flex;
  gap: 6px;
  align-items: center;
}
.meta-chip b { font-weight: 600; color: var(--ink); }
.meta-chip.status { color: #256b49; border-color: #c9e3d3; background: #f2fbf6; }
.meta-chip.status i { width: 5px; height: 5px; border-radius: 50%; background: var(--green); }

.case-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 34px; }

.case-gallery {
  display: grid;
  grid-template-columns: 1.55fr 0.45fr;
  gap: clamp(14px, 2vw, 24px);
  align-items: start;
}

.gallery-desktop {
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  overflow: hidden;
  background: #fff;
  box-shadow: 0 24px 60px -40px rgba(0, 0, 0, 0.35);
}

.gallery-desktop .browser-bar { background: #f1efe9; border-bottom-color: var(--line); }
.gallery-desktop .browser-bar i { background: #cfcabd; }
.gallery-desktop .browser-bar .url { background: #e7e4da; color: #918b7d; }

.gallery-shot {
  position: relative;
  aspect-ratio: 16 / 11;
  overflow: hidden;
  background: #e9e5db;
  cursor: pointer;
}
.gallery-shot img {
  width: 100%;
  height: auto;
  transform: translateY(0);
  transition: transform 1s var(--ease);
  will-change: transform;
}
.gallery-desktop:hover .gallery-shot img {
  transform: translateY(var(--dist, 0px));
  transition-duration: var(--dur, 14s);
  transition-timing-function: linear;
}

.gallery-hint {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  font-size: 10px;
  color: #9b9588;
  border-top: 1px solid var(--line);
  background: #fbfaf7;
}

.phone-frame {
  border: 7px solid #1b1c20;
  border-radius: 26px;
  overflow: hidden;
  background: #1b1c20;
  box-shadow: 0 24px 50px -28px rgba(0, 0, 0, 0.5);
  position: relative;
}
.phone-frame::before {
  content: "";
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 50px;
  height: 5px;
  border-radius: 4px;
  background: #3a3c42;
  z-index: 2;
}
.phone-frame .phone-shot {
  aspect-ratio: 9 / 19;
  overflow: hidden;
  border-radius: 19px;
  background: #111;
  position: relative;
}
.phone-frame img { width: 100%; height: auto; position: absolute; top: 0; left: 0; }

.case-body { padding: clamp(48px, 7vw, 90px) 0; }

.case-layout {
  display: grid;
  grid-template-columns: 190px minmax(0, 820px);
  gap: clamp(30px, 5vw, 80px);
  justify-content: center;
}

.case-aside {
  position: sticky;
  top: calc(var(--header-h) + 24px);
  align-self: start;
  font-size: 11px;
  color: var(--muted-2);
}
.case-aside .aside-label { letter-spacing: 0.16em; margin-bottom: 12px; color: #a09b8d; }
.case-aside nav { display: flex; flex-direction: column; gap: 9px; }
.case-aside nav a { color: #85867e; padding: 2px 0; transition: color 0.2s; }
.case-aside nav a:hover { color: var(--accent); }

.case-main { min-width: 0; }

.case-section { margin-bottom: clamp(44px, 6vw, 72px); }
.case-section:last-child { margin-bottom: 0; }

.case-section > .eyebrow { margin-bottom: 14px; }

.case-section h2 {
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.3;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.case-section p {
  font-size: 14.5px;
  line-height: 2;
  color: #4c4d47;
  margin-bottom: 14px;
}

.case-summary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 24px;
}

.summary-cell {
  border: 1px solid var(--line);
  background: var(--white);
  border-radius: 10px;
  padding: 16px;
}
.summary-cell span { display: block; font-size: 10px; letter-spacing: 0.1em; color: var(--muted-2); margin-bottom: 6px; }
.summary-cell b { font-size: 14px; }

.problem-list { display: flex; flex-direction: column; gap: 12px; }
.problem-item {
  display: flex;
  gap: 14px;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--white);
  font-size: 13px;
  line-height: 1.9;
  color: #4c4d47;
}
.problem-item span {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--accent);
  letter-spacing: 0.08em;
  padding-top: 4px;
  flex: none;
}

.decision {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 16px;
  padding: 24px 0;
  border-top: 1px solid var(--line);
}
.decision:last-child { border-bottom: 1px solid var(--line); }
.decision .num {
  font-size: 30px;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: #d9d5c9;
  line-height: 1;
  font-family: var(--mono);
}
.decision h3 { font-size: 17px; margin-bottom: 8px; }
.decision p { font-size: 13px; margin: 0; }

.tech-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.tech-item {
  border: 1px solid var(--line);
  background: var(--white);
  border-radius: 10px;
  padding: 18px;
}
.tech-item b { display: block; font-size: 12px; color: var(--accent); letter-spacing: 0.04em; margin-bottom: 6px; }
.tech-item p { font-size: 12.5px; line-height: 1.85; margin: 0; }

.timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}
.tl-item { border-top: 2px solid var(--line); padding-top: 14px; }
.tl-item span { font-family: var(--mono); font-size: 10px; color: var(--accent); }
.tl-item b { display: block; font-size: 13px; margin: 7px 0 4px; }
.tl-item small { font-size: 11px; color: var(--muted-2); }

.result-box {
  background: var(--accent-soft);
  border: 1px solid #f6d2c5;
  border-radius: 12px;
  padding: clamp(22px, 3vw, 34px);
}
.result-box .eyebrow { color: #b74218; }
.result-box .eyebrow::before { background: #b74218; }
.result-box blockquote {
  margin: 14px 0 0;
  font-size: clamp(16px, 2vw, 21px);
  line-height: 1.85;
  color: #3b2a24;
  letter-spacing: -0.01em;
}

.price-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  background: var(--dark-2);
  color: #f2f1ec;
  border-radius: 12px;
  padding: clamp(22px, 3vw, 32px);
  flex-wrap: wrap;
}
.price-box small { display: block; font-size: 10px; letter-spacing: 0.16em; color: #898a83; margin-bottom: 8px; }
.price-box b { font-size: clamp(24px, 3.4vw, 36px); letter-spacing: -0.02em; }
.price-box p { font-size: 11.5px; color: #93948d; margin: 6px 0 0; line-height: 1.7; }
.price-box .btn { flex: none; }

.case-cta {
  background: var(--paper-2);
  border-top: 1px solid var(--line);
  padding: clamp(48px, 7vw, 80px) 0;
}
.case-cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  flex-wrap: wrap;
}
.case-cta h2 { font-size: clamp(24px, 3.4vw, 36px); letter-spacing: -0.02em; margin-bottom: 8px; }
.case-cta p { font-size: 12.5px; color: var(--muted); }
.case-cta .actions { display: flex; gap: 10px; flex-wrap: wrap; }

/* ---------- 服务页 ---------- */
.service-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.check-list { display: flex; flex-direction: column; gap: 10px; }
.check-list li {
  display: flex;
  gap: 9px;
  align-items: flex-start;
  font-size: 13px;
  line-height: 1.8;
  color: #4c4d47;
}
.check-list svg { width: 14px; height: 14px; margin-top: 4px; flex: none; color: var(--green); }
.check-list.negative svg { color: #b9b6aa; }

.addon-table {
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  overflow: hidden;
  background: var(--white);
}
.addon-row {
  display: grid;
  grid-template-columns: 1.3fr 1fr 0.6fr;
  gap: 20px;
  padding: 16px 22px;
  border-bottom: 1px solid var(--line);
  font-size: 13px;
  align-items: center;
}
.addon-row:last-child { border-bottom: 0; }
.addon-row.head { background: var(--paper); font-size: 11px; color: var(--muted-2); letter-spacing: 0.06em; }
.addon-row b { font-weight: 600; }
.addon-row .price { font-family: var(--mono); font-size: 12px; color: var(--accent); text-align: right; }
.addon-row .desc { color: var(--muted); font-size: 12px; }

.aftercare-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.aftercare {
  border: 1px solid var(--line);
  background: var(--white);
  border-radius: var(--radius-m);
  padding: 24px;
}
.aftercare b { display: block; font-size: 15px; margin-bottom: 8px; }
.aftercare p { font-size: 12.5px; line-height: 1.9; color: var(--muted); }

/* ---------- 关于页 ---------- */
.about-split {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(30px, 5vw, 70px);
  align-items: start;
}

.about-card {
  background: var(--dark);
  color: #f1f0ea;
  border-radius: var(--radius-l);
  padding: clamp(28px, 4vw, 44px);
  position: relative;
  overflow: hidden;
}
.about-card::after {
  content: "序";
  position: absolute;
  right: -20px;
  bottom: -60px;
  font-size: 220px;
  font-weight: 800;
  color: rgba(255, 255, 255, 0.04);
  line-height: 1;
}
.about-card .monogram {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 800;
  margin-bottom: 22px;
}
.about-card h2 { font-size: 26px; line-height: 1.4; letter-spacing: -0.02em; margin-bottom: 14px; }
.about-card p { font-size: 12.5px; line-height: 1.95; color: #a3a49d; }
.about-facts {
  margin-top: 26px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.about-facts li { display: flex; justify-content: space-between; font-size: 11.5px; color: #8c8d86; }
.about-facts b { color: #e8e7e1; font-weight: 600; }

.principle-list { display: flex; flex-direction: column; }
.principle {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 14px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}
.principle:first-child { border-top: 1px solid var(--line); }
.principle span { font-family: var(--mono); font-size: 11px; color: var(--accent); padding-top: 3px; }
.principle b { display: block; font-size: 15px; margin-bottom: 5px; }
.principle p { font-size: 12.5px; line-height: 1.9; color: var(--muted); margin: 0; }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.contact-method {
  border: 1px solid var(--line);
  background: var(--white);
  border-radius: var(--radius-m);
  padding: 24px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.contact-method .ico {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex: none;
}
.contact-method .ico svg { width: 17px; height: 17px; }
.contact-method b { display: block; font-size: 14px; margin-bottom: 4px; }
.contact-method p { font-size: 11.5px; color: var(--muted); line-height: 1.8; }
.contact-method .val { display: block; font-family: var(--mono); font-size: 12px; color: #4c4d47; margin-top: 4px; word-break: break-all; }

.wechat-inline {
  display: flex;
  align-items: center;
  gap: 16px;
  border: 1px solid var(--line);
  background: var(--white);
  border-radius: var(--radius-m);
  padding: 16px;
}
.wechat-inline img { width: 96px; height: 96px; object-fit: contain; border-radius: 6px; }
.wechat-inline b { display: block; font-size: 13px; margin-bottom: 4px; }
.wechat-inline p { font-size: 11px; color: var(--muted); line-height: 1.7; }

/* ---------- 动效 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.in { opacity: 1; transform: none; }

.reveal-delay-1 { transition-delay: 0.06s; }
.reveal-delay-2 { transition-delay: 0.12s; }
.reveal-delay-3 { transition-delay: 0.18s; }

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .main-nav { gap: 24px; }
  .stage { max-width: 520px; }
  .case-gallery { grid-template-columns: 1.35fr 0.4fr; }
  .case-layout { grid-template-columns: 160px minmax(0, 1fr); }
}

@media (max-width: 900px) {
  .hero > .container { grid-template-columns: 1fr; gap: 46px; }
  .hero-copy { max-width: 640px; }
  .stage { margin: 0 auto; max-width: 560px; padding-left: 26px; }
  .qr-panel { grid-template-columns: 1fr; }
  .qr-card { max-width: 340px; margin: 0 auto; width: 100%; }
  .plans { grid-template-columns: 1fr; }
  .plan.featured { order: -1; }
  .quote-grid { grid-template-columns: 1fr; }
  .contact-band .container { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
  .case-gallery { grid-template-columns: 1fr; }
  .gallery-phone-wrap { max-width: 240px; margin: 12px auto 0; }
  .case-layout { grid-template-columns: 1fr; }
  .case-aside { display: none; }
  .service-split { grid-template-columns: 1fr; }
  .aftercare-grid { grid-template-columns: 1fr; }
  .about-split { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .compare-row { grid-template-columns: 0.9fr 1.1fr 1.1fr; }
  .compare-row > div { padding: 15px 16px; font-size: 12px; }
}

@media (max-width: 768px) {
  :root { --header-h: 60px; }
  body { padding-bottom: 58px; }
  .section { padding: 56px 0; }
  .section-head { display: block; margin-bottom: 28px; }
  .section-head p { margin-top: 14px; font-size: 13px; }
  .main-nav, .header-cta { display: none; }
  .burger { display: flex; }
  .mobile-bar { display: flex; gap: 8px; }
  .header-actions { gap: 10px; }

  .hero { padding: calc(var(--header-h) + 30px) 0 48px; }
  .hero h1 { font-size: clamp(34px, 9.4vw, 46px); margin: 16px 0 18px; }
  .hero h1 .accent { white-space: normal; }
  .hero-sub { font-size: 13.5px; line-height: 1.9; }
  .hero-actions { margin-top: 26px; gap: 10px; }
  .hero-actions .btn { flex: 1 1 auto; min-width: 140px; height: 48px; padding: 0 16px; font-size: 13px; }
  .hero-trust { margin-top: 26px; padding-top: 18px; gap: 8px 18px; font-size: 11px; }
  .stage { padding: 0 0 74px 18px; }
  .stage-note { top: -22px; }
  .stage-phone { width: 104px; border-width: 4px; border-radius: 18px; bottom: 62px; right: 0; }
  .stage-meta { padding-right: 104px; }
  .stage-phone::before { width: 30px; height: 4px; top: 5px; }
  .phone-screen { border-radius: 14px; }
  .stage-meta { padding-left: 14px; margin-top: 12px; }
  .stage-caption b { font-size: 12.5px; }
  .stage-caption span { font-size: 10px; }

  .wall-grid { grid-template-columns: 1fr; gap: 16px; }
  .wall-body { padding: 16px 18px 18px; }
  .wall-title b { font-size: 15px; }
  .wall-badge { top: 40px; right: 10px; font-size: 9px; padding: 5px 8px; }
  .wall-foot { display: block; }
  .wall-foot .link-arrow { margin-top: 14px; }
  .sample-note { font-size: 10.5px; }

  .qr-panel { padding: 26px 20px; border-radius: 18px; }
  .qr-copy h2 { font-size: 27px; }
  .qr-copy p { font-size: 12.5px; }
  .qr-chips { gap: 6px; margin-top: 22px; }
  .qr-chip { font-size: 11px; padding: 7px 10px; }
  .qr-card { padding: 18px; }
  .qr-box { width: 156px; height: 156px; }

  .compare-wrap { border-radius: 12px; }
  .compare-row { grid-template-columns: 1fr; }
  .compare-row > div { padding: 12px 16px; border-left: 0 !important; }
  .compare-head { display: none; }
  .compare-row { position: relative; padding-top: 34px; }
  .compare-label {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    padding: 7px 16px !important;
    font-size: 10px !important;
    letter-spacing: 0.1em;
    background: var(--paper-2) !important;
    color: #7c786c !important;
    border-bottom: 1px solid var(--line);
  }
  .compare-cell { padding: 10px 16px !important; font-size: 12px !important; }
  .compare-cell.us { background: var(--accent-soft); }
  .compare-cell.us::before { content: "独立站"; flex: none; font-size: 9px; color: #b23d18; background: #ffe0d5; padding: 2px 5px; border-radius: 3px; }
  .compare-cell.them::before { content: "平台"; flex: none; font-size: 9px; color: #8c887b; background: #eeece4; padding: 2px 5px; border-radius: 3px; }

  .plan { padding: 24px 22px; }
  .plan-price { font-size: 34px; }
  .plan-fit { min-height: 0; }
  .pricing-foot { display: block; }
  .anchor-price { margin-top: 14px; white-space: normal; }

  .steps { grid-template-columns: 1fr; gap: 0; }
  .step { padding: 20px 0 20px 0; border-top: 1px solid #d7d4c9; }
  .step:last-child { border-bottom: 1px solid #d7d4c9; }
  .step h3 { margin: 8px 0 6px; font-size: 17px; }
  .step-meta { margin-top: 10px; }

  .why-grid { grid-template-columns: 1fr; }
  .why-item { padding: 20px; gap: 14px; }

  .quote-card { padding: 22px; }

  .faq summary { font-size: 14px; padding: 18px 34px 18px 0; }
  .faq-body { font-size: 12.5px; padding-right: 20px; }

  .contact-band { padding: 52px 0; }
  .contact-copy h2 { font-size: 30px; }
  .wechat-card { max-width: none; }
  .form-grid { grid-template-columns: 1fr; }

  .site-footer { padding: 40px 0 20px; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 26px; }
  .footer-bottom { display: block; line-height: 2; }

  .page-hero { padding: calc(var(--header-h) + 34px) 0 28px; }
  .page-hero h1 { font-size: clamp(30px, 8vw, 40px); }
  .page-hero .page-lead { font-size: 13px; }

  .works-toolbar { padding: 22px 0 20px; }
  .filters { gap: 6px; }
  .filter { font-size: 11.5px; padding: 7px 12px; }

  .case-hero { padding: calc(var(--header-h) + 24px) 0 30px; }
  .case-hero h1 { font-size: clamp(28px, 7.4vw, 38px); }
  .case-actions .btn { flex: 1 1 auto; height: 46px; font-size: 12.5px; padding: 0 14px; }
  .case-gallery { gap: 14px; }
  .gallery-hint { font-size: 9px; }
  .gallery-phone-wrap { max-width: 210px; }

  .case-body { padding: 40px 0; }
  .case-section { margin-bottom: 38px; }
  .case-section p { font-size: 13.5px; }
  .case-summary { grid-template-columns: 1fr 1fr; gap: 8px; }
  .summary-cell { padding: 12px; }
  .decision { grid-template-columns: 42px 1fr; gap: 10px; padding: 20px 0; }
  .decision .num { font-size: 24px; }
  .tech-grid { grid-template-columns: 1fr; }
  .timeline { grid-template-columns: 1fr 1fr; gap: 14px; }
  .price-box { display: block; }
  .price-box .btn { width: 100%; margin-top: 18px; }
  .case-cta-inner { display: block; }
  .case-cta .actions { margin-top: 20px; }
  .case-cta .btn { flex: 1 1 auto; }

  .addon-row { grid-template-columns: 1.4fr 0.6fr; gap: 10px; padding: 14px 16px; }
  .addon-row .desc { display: none; }
  .addon-row.head { display: none; }

  .contact-grid { grid-template-columns: 1fr; }
  .contact-grid .wechat-inline { grid-column: auto; }
}

@media (max-width: 400px) {
  .hero-actions .btn { flex: 1 1 100%; }
  .stage-phone { display: none; }
  .stage { padding-bottom: 8px; }
  .stage-meta { padding-left: 0; }
  .compare-cell.us::before,
  .compare-cell.them::before { 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;
  }
  .reveal { opacity: 1; transform: none; }
  .wall-card:hover .wall-shot img,
  .gallery-desktop:hover .gallery-shot img { transform: none; }
}

/* ============================================================
   扩展：首屏视频 / 视频演示位 / 网络图片 / 双端差异化布局
   ============================================================ */

html, body { max-width: 100%; overflow-x: clip; }

/* ---------- 首屏背景视频 ---------- */
.hero { isolation: isolate; }
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}
.hero-bg-poster,
.hero-bg-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.hero-bg-poster { opacity: 0.55; }
.hero-bg-video { opacity: 0; transition: opacity 0.9s var(--ease); }
.hero-bg.is-playing .hero-bg-video { opacity: 0.5; }
.hero-veil {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(11, 12, 14, 0.97) 0%, rgba(11, 12, 14, 0.9) 42%, rgba(11, 12, 14, 0.62) 72%, rgba(11, 12, 14, 0.45) 100%),
    linear-gradient(180deg, rgba(11, 12, 14, 0.55) 0%, rgba(11, 12, 14, 0) 30%, rgba(11, 12, 14, 0.92) 100%);
}
.hero > .container { position: relative; z-index: 2; }
.hero-video-toggle {
  position: absolute;
  right: clamp(18px, 4vw, 54px);
  bottom: 18px;
  z-index: 3;
  pointer-events: auto;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 12px 7px 7px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 999px;
  background: rgba(11, 12, 14, 0.55);
  color: #e9e7df;
  font-size: 11px;
  letter-spacing: 0.04em;
  cursor: pointer;
  backdrop-filter: blur(6px);
  transition: opacity 0.3s, background 0.3s;
}
.hero-video-toggle:hover { background: rgba(11, 12, 14, 0.8); }
.hero-bg.is-playing .hero-video-toggle { opacity: 0.35; }
.hero-bg.is-playing .hero-video-toggle:hover { opacity: 1; }
.hero-video-toggle .video-play-icon { width: 22px; height: 22px; }
.hero-bg .media-credit {
  position: absolute;
  left: clamp(18px, 4vw, 54px);
  bottom: 22px;
  z-index: 3;
  color: #7e7f7a;
  font-size: 9.5px;
  letter-spacing: 0.04em;
}
.hero-bg .media-credit a { color: #9a9b94; text-decoration: underline; text-underline-offset: 2px; }

/* ---------- 通用视频组件 ---------- */
.video-slot {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: var(--radius-m);
  background: #101114;
  border: 1px solid rgba(255, 255, 255, 0.08);
}
.video-poster,
.video-el {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.video-el { opacity: 0; transition: opacity 0.45s ease; }
.video-slot.is-playing .video-el { opacity: 1; }
.video-slot.is-failed .video-el { display: none; }
.video-slot.is-failed .video-play { display: none; }
.video-play {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px 8px 9px;
  border: 1px solid rgba(255, 255, 255, 0.32);
  border-radius: 999px;
  background: rgba(11, 12, 14, 0.62);
  color: #f4f2ec;
  font-size: 12px;
  cursor: pointer;
  backdrop-filter: blur(6px);
  transition: opacity 0.3s, transform 0.3s, background 0.3s;
}
.video-play:hover { background: rgba(11, 12, 14, 0.85); transform: translate(-50%, -50%) scale(1.03); }
.video-slot.is-playing .video-play { opacity: 0; pointer-events: none; }
.video-play-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  flex: none;
}
.video-play-icon svg { width: 12px; height: 12px; margin-left: 1px; }
.video-play-text { letter-spacing: 0.04em; }
.video-slot .media-credit,
.media-credit {
  position: absolute;
  left: 10px;
  bottom: 8px;
  z-index: 2;
  font-size: 9px;
  line-height: 1.4;
  letter-spacing: 0.03em;
  color: rgba(255, 255, 255, 0.6);
  background: rgba(11, 12, 14, 0.45);
  padding: 2px 6px;
  border-radius: 3px;
  max-width: calc(100% - 20px);
}
.video-slot .media-credit a { color: rgba(255, 255, 255, 0.8); }

/* ---------- 视频演示位 ---------- */
.video-demos { background: var(--paper-2); }
.demo-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(16px, 2vw, 24px);
}
.demo-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  overflow: hidden;
  transition: transform 0.35s var(--ease), box-shadow 0.35s;
}
.demo-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.demo-card .video-slot { border-radius: 0; border: 0; }
.demo-body {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px 16px;
}
.demo-body b { display: block; font-size: 14px; }
.demo-body span { display: block; margin-top: 4px; font-size: 10.5px; color: var(--muted-2); letter-spacing: 0.04em; }
.demo-body .link-arrow { font-size: 11.5px; flex: none; }

/* ---------- 桌面案例墙上的视频按钮 ---------- */
.wall-media { position: relative; }
.wall-video-btn {
  position: absolute;
  right: 12px;
  bottom: 12px;
  z-index: 3;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 10px 6px 7px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 999px;
  background: rgba(11, 12, 14, 0.6);
  color: #f1efe9;
  font-size: 10.5px;
  cursor: pointer;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.3s, transform 0.3s, background 0.3s;
  backdrop-filter: blur(6px);
}
.wall-card:hover .wall-video-btn,
.wall-video-btn:focus-visible { opacity: 1; transform: none; }
.wall-video-btn:hover { background: rgba(11, 12, 14, 0.86); }
.wall-video-btn svg { width: 11px; height: 11px; color: var(--accent); }
.wall-shot { position: relative; }

/* ---------- 手机横向案例轨道 ---------- */
.wall-rail { display: none; }
.wall-rail-track {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding: 4px 18px 14px;
}
.wall-rail-track::-webkit-scrollbar { display: none; }
.rail-card {
  flex: 0 0 78%;
  scroll-snap-align: center;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  overflow: hidden;
  color: inherit;
  text-decoration: none;
  display: flex;
  flex-direction: column;
}
.rail-media { position: relative; aspect-ratio: 4 / 3; overflow: hidden; background: #e8e4db; }
.rail-media img { width: 100%; height: 100%; object-fit: cover; display: block; }
.rail-no {
  position: absolute;
  top: 10px;
  left: 10px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: #fff;
  background: rgba(11, 12, 14, 0.55);
  padding: 3px 6px;
  border-radius: 3px;
}
.rail-video-dot {
  position: absolute;
  right: 10px;
  bottom: 10px;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: rgba(11, 12, 14, 0.62);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.3);
}
.rail-video-dot svg { width: 11px; height: 11px; }
.rail-body { padding: 13px 14px 15px; }
.rail-body b { display: block; font-size: 15px; }
.rail-body span { display: block; margin-top: 4px; font-size: 10.5px; color: var(--muted-2); letter-spacing: 0.04em; }
.rail-body em {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 9px;
  font-style: normal;
  font-size: 11px;
  color: var(--accent-text);
}
.rail-body em svg { width: 11px; height: 11px; }
.rail-hint {
  padding: 0 18px;
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--muted-2);
}
.rail-hint::before { content: "↔ "; color: var(--accent); }

/* ---------- 手机对比卡片 ---------- */
.compare-cards { display: none; }
.compare-card {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--white);
  overflow: hidden;
}
.compare-card + .compare-card { margin-top: 10px; }
.compare-card summary {
  list-style: none;
  cursor: pointer;
  padding: 15px 42px 15px 16px;
  font-size: 13px;
  font-weight: 600;
  position: relative;
}
.compare-card summary::-webkit-details-marker { display: none; }
.compare-card summary::after {
  content: "+";
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 18px;
  font-weight: 400;
  color: var(--muted-2);
}
.compare-card[open] summary::after { content: "−"; }
.compare-card summary:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; }
.cc-row {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 12px 16px;
  font-size: 12px;
  line-height: 1.7;
  border-top: 1px solid var(--line);
}
.cc-row p { margin: 0; }
.cc-row svg { width: 13px; height: 13px; flex: none; margin-top: 3px; }
.cc-row.us { background: var(--accent-soft); }
.cc-row.us svg { color: var(--accent-text); }
.cc-row.them { color: var(--muted-2); }
.cc-row.them svg { color: #9b9689; }
.cc-tag {
  flex: none;
  font-size: 9px;
  line-height: 1.7;
  padding: 0 5px;
  border-radius: 3px;
  background: #ffe0d5;
  color: #b23d18;
  align-self: flex-start;
  margin-top: 2px;
}
.cc-row.them .cc-tag { background: #eeece4; color: #8c887b; }
.compare-cards-hint { font-size: 11px; color: var(--muted-2); margin-bottom: 12px; }

/* ---------- 案例详情：视频 + 网络图库 ---------- */
.case-media-block {
  margin-top: 42px;
  padding-top: 30px;
  border-top: 1px solid var(--line);
}
.case-media-block h2 { font-size: clamp(21px, 3vw, 28px); margin: 12px 0 10px; letter-spacing: -0.02em; }
.case-media-lead { font-size: 12.5px; color: var(--muted); max-width: 62ch; margin-bottom: 20px; }
.case-media-block .video-slot { max-width: 860px; margin: 0 auto; }
.net-gallery {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 22px;
}
.net-figure { margin: 0; position: relative; }
.net-figure img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 10px;
  display: block;
  background: #e8e4db;
}
.net-figure figcaption {
  margin-top: 7px;
  font-size: 10px;
  color: var(--muted-2);
  letter-spacing: 0.03em;
}
.net-figure figcaption a { color: var(--accent-text); text-decoration: underline; text-underline-offset: 2px; }

/* ---------- 桌面悬浮二维码 ---------- */
.qr-float {
  position: fixed;
  right: 26px;
  bottom: 26px;
  z-index: 60;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 10px 14px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 999px;
  background: rgba(11, 12, 14, 0.88);
  color: #eceae4;
  font-size: 11.5px;
  letter-spacing: 0.04em;
  cursor: pointer;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.22);
  backdrop-filter: blur(8px);
  transition: transform 0.3s var(--ease), background 0.3s;
}
.qr-float:hover { transform: translateY(-2px); background: #17181b; }
.qr-float svg { width: 15px; height: 15px; color: var(--accent); }

/* 弹窗内视频 */
.modal-video { width: 100%; max-width: 520px; border-radius: 10px; margin: 0 auto 14px; display: block; background: #000; }
.modal-panel.is-video { width: min(560px, 92vw); }

/* 图片失败占位 */
img.is-fallback { object-fit: cover; background: #e8e4db; }

@media (max-width: 1080px) {
  .demo-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 768px) {
  .hero-bg-poster { opacity: 0.42; }
  .hero-bg.is-playing .hero-bg-video { opacity: 0.42; }
  .hero-video-toggle { right: 16px; bottom: 14px; font-size: 10px; padding: 5px 9px 5px 5px; }
  .hero-bg .media-credit { left: 16px; bottom: 16px; font-size: 8.5px; max-width: 55%; }

  .wall-grid--desktop, .works-grid { display: none; }
  .wall-rail { display: block; margin: 0 -18px; }
  .wall-rail--works { margin: 0 -18px 8px; }
  .wall-foot { margin-top: 20px; }

  .compare-wrap { display: none; }
  .compare-cards { display: block; }

  .demo-grid { grid-template-columns: 1fr; }
  .demo-body { padding: 13px 14px 15px; }

  .case-media-block { margin-top: 30px; padding-top: 24px; }
  .net-gallery { grid-template-columns: 1fr; gap: 12px; }
  .case-media-block .video-slot { border-radius: 12px; }

  .qr-float { display: none; }
  .video-play { font-size: 11px; padding: 6px 11px 6px 7px; }
  .video-play-icon { width: 24px; height: 24px; }
}

@media (max-width: 400px) {
  .rail-card { flex-basis: 84%; }
}