/* ============================================================
   添添李网站服务 · 官网
   设计语言：Apple 设计体系（见 ~/Downloads/DESIGN-apple.md）
   动效氛围：OpenAI / DeepSeek 式（粒子、辉光、逐字浮现）
   ============================================================ */

/* ---------- 设计令牌 ---------- */
:root {
  /* 色彩 */
  --primary: #0066cc;
  --primary-focus: #0071e3;
  --primary-on-dark: #2997ff;
  --ink: #1d1d1f;
  --ink-80: #333333;
  --ink-48: #7a7a7a;
  --canvas: #ffffff;
  --parchment: #f5f5f7;
  --pearl: #fafafc;
  --tile: #272729;
  --tile-2: #2a2a2c;
  --tile-3: #252527;
  --black: #000000;
  --on-dark: #ffffff;
  --on-dark-muted: #cccccc;
  --hairline: #e0e0e0;
  --divider-soft: rgba(0, 0, 0, 0.04);
  --on-primary: #ffffff;

  /* 字体 */
  --font: -apple-system, "SF Pro Text", "SF Pro Display", "PingFang SC",
    "HarmonyOS Sans SC", "Microsoft YaHei", system-ui, sans-serif;

  /* 圆角 */
  --r-xs: 5px;
  --r-sm: 8px;
  --r-md: 11px;
  --r-lg: 18px;
  --r-pill: 9999px;

  /* 间距 */
  --sp-xs: 8px;
  --sp-sm: 12px;
  --sp-md: 17px;
  --sp-lg: 24px;
  --sp-xl: 32px;
  --sp-xxl: 48px;
  --sp-section: 80px;

  /* 动效 */
  --ease-out: cubic-bezier(0.22, 0.61, 0.36, 1);
  --ease-spring: cubic-bezier(0.34, 1.4, 0.64, 1);
}

/* ---------- 基础 ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.47;
  letter-spacing: -0.374px;
  color: var(--ink);
  background: var(--canvas);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection { background: rgba(0, 102, 204, 0.2); }

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img, canvas { display: block; }

.container {
  width: min(1200px, calc(100% - 48px));
  margin-inline: auto;
}

/* ---------- 色块体系 ---------- */
.tile-light     { background: var(--canvas); color: var(--ink); padding-block: var(--sp-section); }
.tile-parchment { background: var(--parchment); color: var(--ink); padding-block: var(--sp-section); }
.tile-dark      { background: var(--tile); color: var(--on-dark); padding-block: var(--sp-section); position: relative; overflow: hidden; }
.tile-dark-2    { background: var(--tile-2); color: var(--on-dark); padding-block: var(--sp-section); position: relative; overflow: hidden; }
.tile-black     { background: var(--black); color: var(--on-dark); position: relative; overflow: hidden; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font);
  font-size: 17px;
  line-height: 1;
  border: none;
  border-radius: var(--r-pill);
  padding: 11px 22px;
  cursor: pointer;
  transition: background-color 0.25s var(--ease-out), color 0.25s var(--ease-out),
    border-color 0.25s var(--ease-out), transform 0.4s var(--ease-spring);
  will-change: transform;
}
.btn:active { transform: scale(0.95) !important; }

.btn-primary {
  background: var(--primary);
  color: var(--on-primary);
  box-shadow: 0 8px 26px rgba(0, 102, 204, 0.22);
}
.btn-primary:hover { background: var(--primary-focus); box-shadow: 0 10px 32px rgba(41, 151, 255, 0.34); }

.btn-ghost-pill {
  background: transparent;
  color: var(--on-dark);
  border: 1px solid rgba(255, 255, 255, 0.32);
}
.btn-ghost-pill:hover { border-color: rgba(255, 255, 255, 0.6); }

.btn-pearl {
  background: var(--pearl);
  color: var(--ink-80);
  border: 1px solid var(--hairline);
}
.btn-pearl:hover { border-color: var(--primary); color: var(--primary); }

.btn-lg { padding: 14px 28px; font-size: 18px; font-weight: 300; letter-spacing: 0; }
.btn-xl { padding: 17px 36px; font-size: 19px; font-weight: 300; letter-spacing: 0; }
.btn-nav { padding: 8px 18px; font-size: 14px; letter-spacing: -0.224px; }

/* ---------- 全局导航 ---------- */
.global-nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  background: rgba(0, 0, 0, 0.72);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  backdrop-filter: saturate(180%) blur(20px);
  transition: transform 0.4s var(--ease-out);
}
.global-nav.nav-hidden { transform: translateY(-100%); }

.nav-inner {
  max-width: 1440px;
  margin-inline: auto;
  height: 52px;
  padding-inline: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-lg);
}

.nav-logo { display: inline-flex; align-items: center; gap: 10px; color: var(--on-dark); }
.nav-logo-mark {
  width: 28px; height: 28px;
  display: grid; place-items: center;
  background: var(--primary);
  border-radius: var(--r-sm);
  font-size: 15px; font-weight: 600;
}
.nav-logo-text { font-size: 15px; font-weight: 600; letter-spacing: -0.2px; }
.nav-logo-text em { font-style: normal; font-weight: 400; color: var(--on-dark-muted); margin-left: 4px; font-size: 13px; }

.nav-links { display: flex; gap: 32px; }
.nav-links a {
  font-size: 13px;
  letter-spacing: -0.12px;
  color: rgba(255, 255, 255, 0.78);
  transition: color 0.25s;
}
.nav-links a:hover { color: #fff; }
.nav-links a.active { color: #fff; }

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

.nav-burger {
  display: none;
  width: 36px; height: 36px;
  background: none; border: none; cursor: pointer;
  position: relative;
}
.nav-burger span {
  position: absolute; left: 8px; right: 8px;
  height: 1.5px; background: #fff;
  transition: transform 0.3s var(--ease-out), top 0.3s var(--ease-out);
}
.nav-burger span:nth-child(1) { top: 14px; }
.nav-burger span:nth-child(2) { top: 21px; }
.nav-burger.open span:nth-child(1) { top: 17.5px; transform: rotate(45deg); }
.nav-burger.open span:nth-child(2) { top: 17.5px; transform: rotate(-45deg); }

.nav-mobile-tray {
  display: none;
  flex-direction: column;
  background: rgba(0, 0, 0, 0.9);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  padding: 12px 24px 24px;
}
.nav-mobile-tray a {
  color: rgba(255, 255, 255, 0.85);
  font-size: 17px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.nav-mobile-tray .btn { margin-top: 16px; border-bottom: none; }
.global-nav.tray-open .nav-mobile-tray {
  display: flex;
  animation: trayIn 0.35s var(--ease-out);
}
@keyframes trayIn {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- Hero ---------- */
.hero {
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-block: 140px 110px;
  position: relative;
  isolation: isolate;
  background:
    radial-gradient(ellipse at 50% 42%, rgba(23, 54, 102, 0.22), transparent 52%),
    linear-gradient(145deg, #202126 0%, #1e2027 52%, #17191e 100%);
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero::before {
  z-index: 0;
  opacity: 0.2;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: radial-gradient(ellipse at center, black 10%, transparent 75%);
  mask-image: radial-gradient(ellipse at center, black 10%, transparent 75%);
}

.hero::after {
  z-index: 1;
  background: radial-gradient(ellipse at center, transparent 35%, rgba(5, 7, 12, 0.46) 100%);
}

.particle-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.95;
  mix-blend-mode: screen;
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  pointer-events: none;
  opacity: 0.62;
  mix-blend-mode: screen;
  z-index: 0;
}
.hero-glow-1 {
  width: 640px; height: 640px;
  left: -180px; top: -160px;
  background: radial-gradient(circle, rgba(23, 122, 255, 0.35) 0%, rgba(67, 73, 216, 0.18) 30%, transparent 68%);
  animation: glowDrift 14s ease-in-out infinite alternate;
}
.hero-glow-2 {
  width: 560px; height: 560px;
  right: -160px; bottom: -120px;
  background: radial-gradient(circle, rgba(0, 214, 255, 0.2) 0%, rgba(107, 74, 255, 0.16) 34%, transparent 68%);
  animation: glowDrift 18s ease-in-out infinite alternate-reverse;
}
@keyframes glowDrift {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to { transform: translate3d(60px, 40px, 0) scale(1.12); }
}

.cursor-glow {
  position: absolute;
  width: 560px; height: 560px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(52, 152, 255, 0.18), rgba(106, 78, 255, 0.08) 34%, transparent 70%);
  transform: translate(-50%, -50%);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.6s var(--ease-out);
  z-index: 1;
}
.cursor-glow.visible { opacity: 1; }

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 900px;
}

.hero .scroll-hint { z-index: 2; }

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  letter-spacing: -0.224px;
  color: var(--on-dark-muted);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--r-pill);
  padding: 7px 16px;
  margin-bottom: var(--sp-lg);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.08), 0 0 28px rgba(41,151,255,0.08);
}
.hero-eyebrow-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--primary-on-dark);
  animation: dotPulse 2.4s ease-in-out infinite;
}
@keyframes dotPulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(41, 151, 255, 0.5); }
  50% { box-shadow: 0 0 0 7px rgba(41, 151, 255, 0); }
}

/* 逐字浮现大标题 */
.char-title {
  font-size: clamp(40px, 7.2vw, 80px);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.022em;
  color: var(--on-dark);
}
.char {
  display: inline-block;
  opacity: 0;
  filter: blur(10px);
  transform: translateY(26px) scale(0.98);
  transition:
    opacity 0.7s var(--ease-out),
    filter 0.7s var(--ease-out),
    transform 0.7s var(--ease-out);
  will-change: transform, filter, opacity;
}
.char.in { opacity: 1; filter: blur(0); transform: translateY(0) scale(1); }

.hero-sub {
  margin-top: var(--sp-lg);
  font-size: clamp(19px, 2.4vw, 26px);
  font-weight: 300;
  line-height: 1.5;
  color: var(--on-dark-muted);
  letter-spacing: 0;
}

.typewriter {
  color: var(--primary-on-dark);
  font-weight: 400;
}
.typewriter-caret {
  display: inline-block;
  width: 2px;
  height: 1.1em;
  margin-left: 3px;
  background: var(--primary-on-dark);
  vertical-align: text-bottom;
  animation: caretBlink 1s step-end infinite;
}
@keyframes caretBlink { 50% { opacity: 0; } }

.hero-ctas {
  margin-top: var(--sp-xl);
  display: flex;
  justify-content: center;
  gap: var(--sp-md);
  flex-wrap: wrap;
}

.hero-hint {
  margin-top: var(--sp-lg);
  font-size: 13px;
  letter-spacing: -0.12px;
  color: rgba(255, 255, 255, 0.42);
}

.scroll-hint {
  position: absolute;
  left: 50%;
  bottom: 30px;
  transform: translateX(-50%);
  color: rgba(255, 255, 255, 0.5);
  z-index: 2;
  animation: hintBreathe 2.2s ease-in-out infinite;
}
@keyframes hintBreathe {
  0%, 100% { transform: translate(-50%, 0); opacity: 0.5; }
  50% { transform: translate(-50%, 8px); opacity: 1; }
}

/* ---------- 滚动渐显 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  filter: blur(6px);
  transition:
    opacity 0.85s var(--ease-out),
    transform 0.85s var(--ease-out),
    filter 0.85s var(--ease-out);
  transition-delay: var(--reveal-delay, 0ms);
  will-change: transform, opacity, filter;
}
.reveal.in { opacity: 1; transform: translateY(0); filter: blur(0); }

/* ---------- 板块标题 ---------- */
.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto var(--sp-xxl);
}
.section-eyebrow {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.224px;
  color: var(--primary);
  margin-bottom: var(--sp-sm);
}
.section-title {
  font-size: clamp(32px, 4.6vw, 48px);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
}
.section-lead {
  margin-top: var(--sp-md);
  font-size: 19px;
  font-weight: 300;
  line-height: 1.55;
  color: var(--ink-48);
}
.section-head-dark .section-lead { color: var(--on-dark-muted); }

/* ---------- 数据条 ---------- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-lg);
  text-align: center;
}
.stat-num {
  font-size: clamp(40px, 5vw, 56px);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.1;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}
.stat-unit { font-size: 0.5em; font-weight: 600; color: var(--primary); margin-left: 2px; }
.stat-label {
  margin-top: 6px;
  font-size: 15px;
  color: var(--ink-48);
}

/* ---------- 服务 ---------- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-lg);
}

.service-card {
  background: var(--canvas);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  padding: var(--sp-xl);
  transform-style: preserve-3d;
  transition: border-color 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
}
.service-card:hover { border-color: rgba(0, 102, 204, 0.35); }

.service-icon {
  width: 56px; height: 56px;
  display: grid; place-items: center;
  border-radius: var(--r-md);
  background: rgba(0, 102, 204, 0.08);
  color: var(--ink);
  margin-bottom: var(--sp-lg);
  transform: translateZ(30px);
}
.service-name {
  font-size: 24px;
  font-weight: 600;
  letter-spacing: -0.374px;
  margin-bottom: var(--sp-sm);
  transform: translateZ(24px);
}
.service-desc {
  color: var(--ink-48);
  font-size: 16px;
  line-height: 1.55;
  transform: translateZ(16px);
}
.service-points {
  margin-top: var(--sp-lg);
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-xs);
  transform: translateZ(12px);
}
.service-points li {
  font-size: 13px;
  letter-spacing: -0.12px;
  color: var(--ink-80);
  background: var(--parchment);
  border-radius: var(--r-pill);
  padding: 6px 13px;
}

/* ---------- 案例跑马灯 ---------- */
.marquee {
  width: 100%;
  overflow: hidden;
  padding-block: var(--sp-xs);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.marquee-track {
  display: flex;
  gap: var(--sp-lg);
  width: max-content;
}
.marquee-a .marquee-track { animation: marqueeLeft 46s linear infinite; }
.marquee-b .marquee-track { animation: marqueeRight 52s linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }

@keyframes marqueeLeft { from { transform: translateX(0); } to { transform: translateX(-50%); } }
@keyframes marqueeRight { from { transform: translateX(-50%); } to { transform: translateX(0); } }

.work-card {
  width: 320px;
  flex-shrink: 0;
  border-radius: var(--r-lg);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 12px;
  transition: border-color 0.3s var(--ease-out), transform 0.4s var(--ease-spring), background-color 0.3s;
  cursor: pointer;
}
.work-card:hover {
  border-color: rgba(41, 151, 255, 0.45);
  background: rgba(255, 255, 255, 0.07);
  transform: translateY(-5px);
}

.work-thumb {
  aspect-ratio: 4 / 3;
  border-radius: var(--r-sm);
  position: relative;
  overflow: hidden;
}
.work-browser-dots {
  position: absolute;
  top: 12px; left: 14px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.55);
  box-shadow: 11px 0 0 rgba(255, 255, 255, 0.55), 22px 0 0 rgba(255, 255, 255, 0.55);
}
.work-thumb-blocks { position: absolute; inset: 0; }
.work-thumb-blocks::before,
.work-thumb-blocks::after {
  content: "";
  position: absolute;
  border-radius: 4px;
}
.work-thumb-blocks::before {
  left: 14%; right: 14%; top: 26%;
  height: 13%;
  background: rgba(255, 255, 255, 0.82);
}
.work-thumb-blocks::after {
  left: 14%; top: 47%;
  width: 42%; height: 9%;
  background: rgba(255, 255, 255, 0.4);
  box-shadow: 0 12px 0 rgba(255, 255, 255, 0.4), 0 24px 0 rgba(255, 255, 255, 0.4);
}

/* 12 个抽象站点缩略图配色 */
.thumb-1  { background: #24425f; }
.thumb-2  { background: #3d5a45; }
.thumb-3  { background: #4a4458; }
.thumb-4  { background: #234b56; }
.thumb-5  { background: #59452f; }
.thumb-6  { background: #46333f; }
.thumb-7  { background: #2f3b52; }
.thumb-8  { background: #54402c; }
.thumb-9  { background: #2c4a42; }
.thumb-10 { background: #3a3f5c; }
.thumb-11 { background: #57333a; }
.thumb-12 { background: #334557; }

.work-meta {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  padding: 14px 8px 6px;
}
.work-tag {
  font-size: 12px;
  letter-spacing: -0.12px;
  color: var(--primary-on-dark);
  background: rgba(41, 151, 255, 0.12);
  border-radius: var(--r-pill);
  padding: 4px 11px;
  white-space: nowrap;
}
.work-name {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.224px;
  color: var(--on-dark);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ---------- 流程时间线 ---------- */
.timeline {
  position: relative;
  max-width: 760px;
  margin-inline: auto;
  padding-left: 52px;
}
.timeline-rail {
  position: absolute;
  left: 17px; top: 8px; bottom: 8px;
  width: 2px;
  background: var(--hairline);
  border-radius: var(--r-pill);
}
.timeline-progress {
  position: absolute;
  inset: 0;
  background: var(--primary);
  border-radius: var(--r-pill);
  transform-origin: top;
  transform: scaleY(0);
}

.timeline-step {
  position: relative;
  padding-block: var(--sp-lg);
}
.timeline-step + .timeline-step { border-top: none; }

.timeline-node {
  position: absolute;
  left: -52px; top: calc(var(--sp-lg) + 6px);
  width: 36px; height: 36px;
  display: grid; place-items: center;
}
.timeline-node span {
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--hairline);
  transition: background-color 0.5s var(--ease-out), box-shadow 0.5s var(--ease-out), transform 0.5s var(--ease-spring);
}
.timeline-step.lit .timeline-node span {
  background: var(--primary);
  box-shadow: 0 0 0 6px rgba(0, 102, 204, 0.15);
  transform: scale(1.15);
}

.timeline-phase {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--primary);
}
.timeline-name {
  font-size: 26px;
  font-weight: 600;
  letter-spacing: -0.374px;
  margin-block: 4px 8px;
}
.timeline-desc {
  color: var(--ink-48);
  font-size: 16px;
  line-height: 1.55;
  max-width: 560px;
}

/* ---------- 为什么选我们 ---------- */
.why-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-xxl);
  align-items: center;
  position: relative;
  z-index: 2;
}
.why-head { text-align: left; margin-inline: 0; }
.why-head .btn { margin-top: var(--sp-xl); }
.why-glow { opacity: 0.35; }

.why-bars { display: flex; flex-direction: column; gap: var(--sp-xl); }
.bar-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 10px;
}
.bar-label { font-size: 16px; font-weight: 600; letter-spacing: -0.224px; color: var(--on-dark); }
.bar-value {
  font-size: 14px;
  color: var(--primary-on-dark);
  font-variant-numeric: tabular-nums;
}
.bar-track {
  height: 6px;
  border-radius: var(--r-pill);
  background: rgba(255, 255, 255, 0.1);
  overflow: hidden;
}
.bar-fill {
  height: 100%;
  width: 0;
  border-radius: var(--r-pill);
  background: linear-gradient(90deg, #0066cc, #2997ff);
  transition: width 1.4s var(--ease-out);
}

/* ---------- 报价 ---------- */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-lg);
  align-items: stretch;
}
.pricing-card {
  position: relative;
  background: var(--canvas);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  padding: var(--sp-xl);
  display: flex;
  flex-direction: column;
  transition: transform 0.45s var(--ease-spring), border-color 0.3s, box-shadow 0.3s;
}
.pricing-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0, 102, 204, 0.4);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.07);
}

.pricing-featured {
  background: var(--tile);
  color: var(--on-dark);
  border-color: var(--tile);
}
.pricing-featured:hover { border-color: var(--primary-on-dark); }

.pricing-badge {
  position: absolute;
  top: -13px; left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: var(--on-primary);
  font-size: 12px;
  letter-spacing: -0.12px;
  border-radius: var(--r-pill);
  padding: 5px 14px;
  white-space: nowrap;
}

.pricing-name { font-size: 22px; font-weight: 600; letter-spacing: -0.374px; }
.pricing-for { margin-top: 4px; font-size: 14px; color: var(--ink-48); }
.pricing-featured .pricing-for { color: var(--on-dark-muted); }

.pricing-price {
  margin-block: var(--sp-lg);
  font-size: 42px;
  font-weight: 600;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
}
.pricing-currency { font-size: 0.55em; margin-right: 3px; font-weight: 600; }
.pricing-from { font-size: 15px; font-weight: 400; margin-left: 6px; opacity: 0.55; }

.pricing-features {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: var(--sp-xl);
}
.pricing-features li {
  position: relative;
  padding-left: 26px;
  font-size: 15px;
  line-height: 1.5;
  color: var(--ink-80);
}
.pricing-featured .pricing-features li { color: var(--on-dark-muted); }
.pricing-features li::before {
  content: "";
  position: absolute;
  left: 0; top: 5px;
  width: 15px; height: 15px;
  border-radius: 50%;
  background:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 15 15'%3E%3Cpath d='M4 7.8 6.4 10.2 11 4.8' stroke='%230066cc' stroke-width='1.8' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E")
    no-repeat center / contain;
}
.pricing-card .btn { align-self: flex-start; }
.pricing-featured .btn-primary { background: var(--primary); }
.pricing-featured .btn-primary:hover { background: var(--primary-focus); }

/* ---------- 终章 CTA ---------- */
.finale {
  min-height: 88svh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-block: var(--sp-section);
}
.finale-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 980px;
  padding-inline: var(--sp-lg);
}
.finale-title { margin-bottom: var(--sp-xl); }
.finale-contacts {
  margin-top: var(--sp-xl);
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--sp-sm);
  font-size: 14px;
  letter-spacing: -0.224px;
  color: rgba(255, 255, 255, 0.55);
}
.finale-contact { color: rgba(255, 255, 255, 0.7); transition: color 0.25s; }
a.finale-contact:hover { color: var(--primary-on-dark); }
.finale-sep { opacity: 0.35; }
.finale-glow { opacity: 0.4; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--parchment);
  color: var(--ink-80);
  padding-block: var(--sp-xxl) var(--sp-lg);
  border-top: 1px solid var(--hairline);
}
.footer-cols {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--sp-xl);
  padding-bottom: var(--sp-xl);
}
.footer-slogan {
  margin-top: var(--sp-md);
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink-48);
}
.footer-col h4 {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.224px;
  color: var(--ink);
  margin-bottom: var(--sp-sm);
}
.footer-col a {
  display: block;
  font-size: 13px;
  line-height: 2.2;
  color: var(--ink-48);
  transition: color 0.25s;
}
.footer-col a:hover { color: var(--primary); }
.footer-legal {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--sp-sm);
  padding-top: var(--sp-lg);
  border-top: 1px solid var(--hairline);
  font-size: 12px;
  letter-spacing: -0.12px;
  color: var(--ink-48);
}

/* ============================================================
   响应式
   ============================================================ */

/* ≤ 1068px 小桌面 */
@media (max-width: 1068px) {
  .services-grid { gap: var(--sp-md); }
  .service-card { padding: var(--sp-lg); }
  .why-grid { gap: var(--sp-xl); }
  .work-card { width: 280px; }
}

/* ≤ 834px 平板 */
@media (max-width: 834px) {
  .nav-links { display: none; }
  .nav-burger { display: block; }
  .nav-actions .btn-nav { display: none; }

  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: var(--sp-xl) var(--sp-lg); }
  .services-grid { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; max-width: 480px; margin-inline: auto; }
  .why-grid { grid-template-columns: 1fr; }
  .why-head { text-align: center; margin-inline: auto; }
  .why-head .btn { margin-top: var(--sp-lg); }
  .footer-cols { grid-template-columns: repeat(2, 1fr); }
}

/* ≤ 640px 手机 */
@media (max-width: 640px) {
  :root { --sp-section: 56px; }
  body { font-size: 16px; }
  .tile-light, .tile-parchment, .tile-dark, .tile-dark-2 { padding-block: var(--sp-section); }
  .hero { padding-block: 120px 96px; }
  .hero-ctas .btn { width: min(320px, 100%); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-num { font-size: 38px; }
  .work-card { width: 250px; }
  .timeline { padding-left: 44px; }
  .timeline-rail { left: 13px; }
  .timeline-node { left: -44px; }
  .timeline-name { font-size: 22px; }
  .footer-cols { grid-template-columns: 1fr 1fr; gap: var(--sp-lg); }
  .marquee { -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); }
  .particle-canvas { opacity: 0.78; mix-blend-mode: normal; }
  .hero::before { opacity: 0.12; background-size: 52px 52px; }
}

/* ≤ 480px 小屏 */
@media (max-width: 480px) {
  .nav-logo-text em { display: none; }
  .hero-ctas { flex-direction: column; align-items: center; }
  .pricing-price { font-size: 34px; }
  .footer-legal { flex-direction: column; }
}

/* ============================================================
   降级：减少动态效果
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001s !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001s !important;
  }
  .reveal, .char {
    opacity: 1 !important;
    transform: none !important;
    filter: none !important;
  }
  .marquee-track { animation: none !important; }
  .scroll-hint { display: none; }
}