/* ============================================================
   兔克出海 TKTK.com — 专题页样式
   ============================================================ */

:root {
  --ink: #0a0d14;
  --ink-2: #11161f;
  --line: rgba(255, 255, 255, .1);
  --line-soft: rgba(255, 255, 255, .06);

  --cyan: #25f4ee;
  --red: #fe2c55;
  --blue: #4d7cff;
  --grad: linear-gradient(120deg, #25f4ee 0%, #4d7cff 48%, #fe2c55 100%);

  --text: #eef2f8;
  --text-2: #a8b3c4;
  --text-3: #6f7b8d;

  --light-bg: #f6f8fc;
  --light-text: #0f172a;
  --light-text-2: #5a6679;
  --light-line: rgba(15, 23, 42, .09);

  --radius: 20px;
  --shadow: 0 24px 60px -24px rgba(10, 20, 40, .28);
  --shadow-dark: 0 30px 70px -30px rgba(0, 0, 0, .8);
  --container: 1240px;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--text);
  background: var(--ink);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol, dl, dd { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4 { margin: 0; line-height: 1.25; font-weight: 700; letter-spacing: -.01em; }
p { margin: 0; }
button { font: inherit; cursor: pointer; border: 0; background: none; color: inherit; }

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

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 30px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), background .35s var(--ease);
  white-space: nowrap;
}
.btn .arrow { transition: transform .35s var(--ease); }
.btn:hover .arrow { transform: translateX(5px); }
.btn-primary { background: var(--grad); color: #06090f; box-shadow: 0 16px 40px -16px rgba(77, 124, 255, .85); }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 22px 50px -18px rgba(254, 44, 85, .75); }
.btn-ghost { border: 1px solid var(--line); color: var(--text); background: rgba(255, 255, 255, .03); backdrop-filter: blur(10px); }
.btn-ghost:hover { background: rgba(255, 255, 255, .09); transform: translateY(-3px); }

/* ---------- 导航 ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  padding: 18px 0;
  border-bottom: 1px solid transparent;
  transition: background .4s var(--ease), padding .4s var(--ease), border-color .4s, backdrop-filter .4s;
}
.site-header.is-stuck {
  padding: 10px 0;
  background: rgba(8, 11, 17, .82);
  backdrop-filter: blur(18px) saturate(150%);
  border-bottom-color: var(--line-soft);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; }

.brand { display: flex; align-items: center; gap: 12px; }
.brand-logo { width: 40px; height: 40px; border-radius: 10px; object-fit: contain; background: #fff; padding: 4px; }
.brand-text { display: flex; flex-direction: column; font-size: 17px; font-weight: 700; line-height: 1.1; letter-spacing: .02em; }
.brand-text em { font-style: normal; font-size: 11px; font-weight: 500; color: var(--text-3); letter-spacing: .16em; margin-top: 3px; }

.nav { display: flex; align-items: center; gap: 6px; }
.nav a { position: relative; padding: 9px 15px; font-size: 14.5px; color: var(--text-2); border-radius: 999px; transition: color .3s, background .3s; }
.nav a:hover, .nav a.is-active { color: #fff; background: rgba(255, 255, 255, .07); }
.nav a.nav-cta { margin-left: 8px; color: #06090f; font-weight: 600; background: var(--grad); padding: 10px 22px; }
.nav a.nav-cta:hover { filter: brightness(1.08); }

/* 顶部导航下拉：TikTok 核心业务 */
.nav-item { position: relative; }
.nav-drop-btn { display: inline-flex; align-items: center; gap: 6px; }
.nav-caret { width: 6px; height: 6px; margin-top: -3px; border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor; transform: rotate(45deg); transition: transform .3s var(--ease); }
.nav-item--drop:hover .nav-caret,
.nav-item--drop.is-open .nav-caret { transform: rotate(225deg); margin-top: 3px; }
.nav-drop {
  position: absolute;
  top: calc(100% + 12px);
  left: 50%;
  min-width: 210px;
  padding: 8px;
  border-radius: 16px;
  background: rgba(14, 19, 28, .96);
  border: 1px solid var(--line);
  box-shadow: 0 28px 60px -30px rgba(0, 0, 0, .95);
  backdrop-filter: blur(18px) saturate(150%);
  opacity: 0;
  visibility: hidden;
  transform: translate(-50%, -8px);
  transition: opacity .28s var(--ease), transform .28s var(--ease), visibility .28s;
}
.nav-drop::before { content: ""; position: absolute; top: -12px; left: 0; right: 0; height: 12px; }
.nav-item--drop:hover .nav-drop,
.nav-item--drop:focus-within .nav-drop,
.nav-item--drop.is-open .nav-drop { opacity: 1; visibility: visible; transform: translate(-50%, 0); }
.nav-drop a { display: flex; align-items: center; gap: 10px; padding: 10px 14px; font-size: 14px; border-radius: 10px; }
.nav-drop a em { font-style: normal; font-size: 11px; font-weight: 700; letter-spacing: .06em; color: var(--text-3); }
.nav-drop a:hover { color: #fff; background: rgba(255, 255, 255, .07); }
.nav-drop a:hover em { color: var(--cyan); }

.nav-toggle { display: none; width: 44px; height: 44px; border-radius: 12px; border: 1px solid var(--line); }
.nav-toggle span { display: block; width: 18px; height: 2px; margin: 4px auto; background: #fff; border-radius: 2px; transition: transform .3s, opacity .3s; }
.nav-toggle.is-open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ---------- 首屏 ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 130px 0 80px;
  overflow: hidden;
  background: radial-gradient(120% 90% at 78% 12%, #16203a 0%, #0a0d14 58%);
}
.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.orb { position: absolute; border-radius: 50%; filter: blur(90px); }
.orb-1 { width: 520px; height: 520px; background: #25f4ee; top: -160px; right: -80px; opacity: .22; animation: float 16s ease-in-out infinite; }
.orb-2 { width: 460px; height: 460px; background: #fe2c55; bottom: -180px; left: -120px; opacity: .24; animation: float 20s ease-in-out infinite reverse; }
.orb-3 { width: 380px; height: 380px; background: #4d7cff; top: 40%; left: 42%; opacity: .16; animation: float 24s ease-in-out infinite; }
.grid-lines {
  position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(70% 60% at 50% 40%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(70% 60% at 50% 40%, #000 20%, transparent 78%);
}
@keyframes float {
  0%, 100% { transform: translate3d(0, 0, 0) scale(1); }
  50% { transform: translate3d(30px, -40px, 0) scale(1.08); }
}

.hero-inner { position: relative; display: grid; grid-template-columns: 1.08fr .92fr; gap: 60px; align-items: center; }
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 13.5px; color: var(--text-2);
  padding: 8px 18px 8px 14px;
  border: 1px solid var(--line); border-radius: 999px;
  background: rgba(255, 255, 255, .04);
  backdrop-filter: blur(8px);
  margin-bottom: 28px;
}
.hero-eyebrow .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 0 4px rgba(37, 244, 238, .18); animation: blink 2.4s ease-in-out infinite; }
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: .35; } }

.hero-title { font-size: clamp(38px, 5.4vw, 68px); letter-spacing: -.03em; line-height: 1.12; }
.hero-title .line { display: block; }

/* 官网访问入口（与 h1 同行） */
.hero-title-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px 20px;
}
.hero-site-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: .01em;
  line-height: 1;
  white-space: nowrap;
  color: var(--cyan);
  border: 1px solid rgba(37, 244, 238, .45);
  background: rgba(37, 244, 238, .08);
  transition: color .3s, background .3s, border-color .3s, transform .3s, box-shadow .3s;
}
.hero-site-link svg { width: 15px; height: 15px; transition: transform .3s var(--ease); }
.hero-site-link:hover {
  color: #06090f;
  background: var(--cyan);
  border-color: var(--cyan);
  transform: translateY(-2px);
  box-shadow: 0 12px 26px -14px rgba(37, 244, 238, .9);
}
.hero-site-link:hover svg { transform: translate(2px, -2px); }
.hero-site-link:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; }
.gradient-text { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; padding-bottom: .08em; font-size: clamp(18px, 2vw, 68px);letter-spacing: -.03em;line-height: 1.12;}
.hero-sub { margin-top: 22px; font-size: clamp(15px, 1.4vw, 18px); color: var(--text-2); }

.hero-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; }
.hero-tags li { font-size: 13.5px; color: var(--text-2); border-radius: 999px; border: 1px solid var(--line); background: rgba(255, 255, 255, .03); transition: color .3s, border-color .3s, transform .3s, background .3s; }
.hero-tags li:hover { color: #fff; border-color: rgba(37, 244, 238, .5); background: rgba(37, 244, 238, .08); transform: translateY(-2px); }
.hero-tags li a { display: block; padding: 7px 16px; color: inherit; }
.hero-tags li:focus-within { border-color: rgba(37, 244, 238, .6); }
.hero-tags li a:focus-visible { outline: none; }

.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 36px; }

.hero-stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; margin-top: 52px; padding-top: 28px; border-top: 1px solid var(--line-soft); }
.hero-stats dt { font-size: clamp(20px, 2.1vw, 27px); font-weight: 700; letter-spacing: -.02em; }
.hero-stats dt.stat-word { font-size: clamp(14px, 1.3vw, 18px); letter-spacing: .02em; }
.hero-stats dt.stat-word span { color: var(--text-3); margin: 0 1px; }
.hero-stats dd { font-size: 12.5px; color: var(--text-3); margin-top: 4px; }

.hero-visual { position: relative; display: flex; justify-content: center; }
.phone-frame {
  position: relative;
  width: min(100%, 420px);
  border-radius: 34px;
  padding: 10px;
  background: linear-gradient(160deg, rgba(255, 255, 255, .16), rgba(255, 255, 255, .02));
  box-shadow: var(--shadow-dark), 0 0 0 1px rgba(255, 255, 255, .08) inset;
  animation: heroFloat 7s ease-in-out infinite;
}
.phone-frame img { border-radius: 26px; width: 100%; }
@keyframes heroFloat {
  0%, 100% { transform: translateY(0) rotate(-1deg); }
  50% { transform: translateY(-16px) rotate(1deg); }
}

.float-card {
  position: absolute;
  display: flex; flex-direction: column; gap: 2px;
  padding: 14px 18px;
  border-radius: 16px;
  background: rgba(17, 22, 31, .78);
  border: 1px solid var(--line);
  backdrop-filter: blur(16px);
  box-shadow: 0 20px 40px -20px rgba(0, 0, 0, .9);
  animation: cardFloat 6s ease-in-out infinite;
}
.float-card .fc-label { font-size: 11.5px; color: var(--text-3); letter-spacing: .06em; }
.float-card strong { font-size: 20px; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.float-card .fc-desc { font-size: 11.5px; color: var(--text-2); }
.fc-1 { top: 12%; left: -6%; animation-delay: .4s; }
.fc-2 { bottom: 20%; right: -8%; animation-delay: 1.2s; }
.fc-3 { bottom: 2%; left: 2%; animation-delay: 2s; }
.fc-3 strong { font-size: 15px; }
@keyframes cardFloat { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }

.scroll-hint {
  position: absolute; left: 50%; bottom: 26px;
  transform: translateX(-50%);
  width: 26px; height: 42px;
  border: 1.5px solid rgba(255, 255, 255, .22);
  border-radius: 999px;
  display: grid; place-items: start center;
  padding-top: 8px;
}
.scroll-hint span { width: 4px; height: 8px; border-radius: 4px; background: var(--cyan); animation: scrollDot 1.8s ease-in-out infinite; }
@keyframes scrollDot {
  0% { transform: translateY(0); opacity: 1; }
  70% { transform: translateY(16px); opacity: 0; }
  100% { transform: translateY(0); opacity: 0; }
}

/* ---------- 区块通用 ---------- */
.section { position: relative; padding: 110px 0; }
.section-dark { background: var(--ink); }
.section-dark::before {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(60% 50% at 50% 0%, rgba(77, 124, 255, .1), transparent 70%);
  pointer-events: none;
}
.section > .container { position: relative; }

.section-head { max-width: 780px; margin-bottom: 56px; }
.section-head--center { margin-inline: auto; text-align: center; }
/* 案例 / 关于兔克：标题区水平居中 */
.cases .section-head,
.about .section-head { margin-inline: auto; text-align: center; }
.section-title { font-size: clamp(28px, 3.6vw, 46px); letter-spacing: -.025em; }
.section-desc { margin-top: 18px; font-size: 15.5px; color: var(--text-2); }

/* ---------- 趋势 ---------- */
.trend-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.trend-card {
  padding: 26px;
  border-radius: var(--radius);
  background: linear-gradient(165deg, rgba(255, 255, 255, .07), rgba(255, 255, 255, .015));
  border: 1px solid var(--line-soft);
  overflow: hidden;
  transition: transform .5s var(--ease), border-color .5s;
}
.trend-card:hover { transform: translateY(-6px); border-color: rgba(37, 244, 238, .32); }
.trend-card--wide { grid-column: span 2; }
.trend-card--phone { display: flex; flex-direction: column; }
.trend-card-head h3 { font-size: 20px; margin-top: 12px; }
.trend-card-head p { font-size: 13.5px; color: var(--text-2); margin-top: 6px; }
.trend-badge { display: inline-block; font-size: 11.5px; letter-spacing: .08em; padding: 4px 12px; border-radius: 999px; color: var(--cyan); background: rgba(37, 244, 238, .1); border: 1px solid rgba(37, 244, 238, .24); }
.trend-card img { margin-top: 22px; border-radius: 12px; width: 100%; }
.trend-card--phone img { margin-top: auto; max-height: 300px; width: auto; margin-inline: auto; }

.pain {
  margin-top: 64px;
  padding: 44px;
  border-radius: 26px;
  background: linear-gradient(120deg, rgba(37, 244, 238, .07), rgba(254, 44, 85, .07));
  border: 1px solid var(--line-soft);
}
.pain-head h3 { font-size: 24px; }
.pain-head p { color: var(--text-2); font-size: 14.5px; margin-top: 8px; }
.pain-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 32px; }
.pain-item { padding: 26px; border-radius: 18px; background: rgba(10, 13, 20, .55); border: 1px solid var(--line-soft); transition: transform .4s var(--ease), border-color .4s; }
.pain-item:hover { transform: translateY(-4px); border-color: rgba(254, 44, 85, .3); }
.pain-num { font-size: 13px; font-weight: 700; letter-spacing: .1em; color: var(--red); }
.pain-item h4 { font-size: 17px; margin-top: 8px; }
.pain-item p { font-size: 14px; color: var(--text-2); margin-top: 8px; }

/* ---------- 六大业务（浅色主题） ---------- */
.services { background: var(--light-bg); color: var(--light-text); }
.services.services .section-desc { color: var(--light-text-2); }

/* ---------- 关于兔克 ---------- */
.about { background: var(--light-bg); color: var(--light-text); }
.about.about .section-desc { color: var(--light-text-2); }

.about-layout { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
.about-gallery { display: grid; grid-template-columns: repeat(6, 1fr); grid-template-rows: 150px 150px; gap: 14px; }
.ag { margin: 0; border-radius: 18px; overflow: hidden; box-shadow: var(--shadow); }
.ag img { width: 100%; height: 100%; object-fit: cover; transition: transform .8s var(--ease); }
.ag:hover img { transform: scale(1.06); }
.ag-1 { grid-column: span 4; }
.ag-2 { grid-column: span 2; }
.ag-3, .ag-4, .ag-5 { grid-column: span 2; }

.about-badge { display: inline-flex; align-items: center; gap: 12px; padding: 12px 20px; border-radius: 14px; background: #fff; border: 1px solid var(--light-line); box-shadow: 0 12px 30px -18px rgba(15, 23, 42, .35); }
.ab-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--grad); }
.about-badge strong { display: block; font-size: 15px; letter-spacing: .04em; }
.about-badge em { font-style: normal; font-size: 12px; color: var(--light-text-2); }

.about-lead { margin-top: 24px; font-size: 16px; color: var(--light-text-2); line-height: 1.85; }
.about-lead strong { color: var(--light-text); font-weight: 600; }

.about-points { margin-top: 24px; display: grid; gap: 12px; }
.about-points li { display: flex; align-items: center; gap: 14px; font-size: 14.5px; color: var(--light-text-2); padding: 12px 16px; background: #fff; border-radius: 12px; border: 1px solid var(--light-line); }
.about-points span { flex: none; font-size: 12px; font-weight: 700; color: #fff; padding: 3px 10px; border-radius: 6px; background: linear-gradient(120deg, #0f172a, #334155); }

.about-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 28px; }
.about-stats > div { padding: 18px; border-radius: 14px; background: linear-gradient(160deg, #fff, #eef2fa); border: 1px solid var(--light-line); }
.about-stats strong { display: block; font-size: 26px; letter-spacing: -.02em; background: linear-gradient(120deg, #0f172a, #4d7cff); -webkit-background-clip: text; background-clip: text; color: transparent; }
.about-stats em { font-style: normal; font-size: 12.5px; color: var(--light-text-2); }

/* 全球布局 */
.global { margin-top: 90px; padding: 48px; border-radius: 28px; background: linear-gradient(150deg, #0b1220, #131c2e 60%, #0b1220); color: var(--text); box-shadow: var(--shadow); overflow: hidden; }
.global-head h3 { font-size: 26px; }
.global-head p { margin-top: 10px; font-size: 14.5px; color: var(--text-2); max-width: 720px; }
.global-map { margin: 18px 0 8px; }
.global-map svg { width: 100%; height: auto; }
.map-dots circle { fill: rgba(120, 160, 255, .28); }
.map-links path { fill: none; stroke: rgba(37, 244, 238, .35); stroke-width: 1.2; stroke-dasharray: 5 7; animation: dash 3s linear infinite; }
@keyframes dash { to { stroke-dashoffset: -48; } }
.pin circle:not(.pulse) { fill: var(--cyan); }
.pin .pulse { fill: none; stroke: var(--cyan); stroke-width: 1.2; opacity: .8; transform-origin: center; animation: pulse 2.6s ease-out infinite; }
@keyframes pulse { 0% { transform: scale(1); opacity: .8; } 100% { transform: scale(3.2); opacity: 0; } }
.pin text { fill: #cfe0ff; font-size: 12px; font-family: inherit; }

.global-list { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 8px; }
.gl-item { font-size: 13.5px; color: var(--text-2); padding: 10px 18px; border-radius: 999px; border: 1px solid var(--line); background: rgba(255, 255, 255, .04); }
.gl-item span { color: #fff; font-weight: 600; margin-right: 8px; }

/* 客户 / 团队 */
.about-bottom { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; margin-top: 90px; }
.about-block h3 { font-size: 22px; margin-bottom: 22px; }

.industry-tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.itab { padding: 9px 18px; font-size: 13.5px; border-radius: 999px; color: var(--light-text-2); background: #fff; border: 1px solid var(--light-line); transition: all .3s var(--ease); }
.itab:hover { color: var(--light-text); }
.itab.is-active { color: #fff; background: linear-gradient(120deg, #0f172a, #334155); border-color: transparent; }

.industry-panels { position: relative; border-radius: 20px; overflow: hidden; background: #fff; box-shadow: var(--shadow); aspect-ratio: 16 / 10; }
.ipanel { position: absolute; inset: 0; opacity: 0; transform: scale(1.03); transition: opacity .6s var(--ease), transform .8s var(--ease); }
.ipanel.is-active { opacity: 1; transform: scale(1); }
.ipanel img { width: 100%; height: 100%; object-fit: cover; }
.about-note { margin-top: 14px; font-size: 12.5px; color: #8a94a6; }

.team-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.team-grid figure { margin: 0; border-radius: 16px; overflow: hidden; aspect-ratio: 4 / 3; box-shadow: 0 14px 34px -22px rgba(15, 23, 42, .5); }
.team-grid img { width: 100%; height: 100%; object-fit: cover; transition: transform .8s var(--ease); }
.team-grid figure:hover img { transform: scale(1.08); }
/* ---------- 六大业务 ---------- */
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.svc-card { position: relative; padding: 32px 28px; border-radius: var(--radius); background: linear-gradient(170deg, rgba(255,255,255,.07), rgba(255,255,255,.015)); border: 1px solid var(--line-soft); overflow: hidden; transition: transform .5s var(--ease), box-shadow .5s; }
.svc-card::after { content: ""; position: absolute; inset: -1px; border-radius: inherit; padding: 1px; background: var(--grad); -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude; opacity: 0; transition: opacity .5s; pointer-events: none; }
.svc-card:hover { transform: translateY(-8px); box-shadow: 0 30px 60px -30px rgba(37,244,238,.35); }
.svc-card:hover::after { opacity: .8; }
.svc-index { position: absolute; top: 22px; right: 26px; font-size: 34px; font-weight: 800; letter-spacing: -.03em; color: rgba(255,255,255,.07); }
.svc-card h3 { font-size: 20px; }
.svc-sub { font-size: 13.5px; color: var(--cyan); margin-top: 8px; }
.svc-flow { margin-top: 20px; display: grid; gap: 12px; }
.svc-flow li { font-size: 13.5px; color:var(--light-text-2);  line-height: 1.75; padding-left: 14px; position: relative; text-align: justify; text-justify: inter-ideograph; word-break: break-word; }
.svc-flow li::before { content: ""; position: absolute; left: 0; top: .65em; width: 5px; height: 5px; border-radius: 50%; background: rgba(37,244,238,.6); }
.svc-flow b { color: #var(--light-text-2); font-weight: 600; margin-right: 6px; }
.svc-metrics { display: flex; flex-wrap: wrap; gap: 10px 22px; margin-top: 22px; padding-top: 18px; border-top: 1px solid var(--line-soft); }
.svc-metrics span { font-size: 12px; color: var(--text-3); }
.svc-metrics b { display: block; font-size: 17px; color: var(--light-text-2); letter-spacing: -.01em; }

.kol { margin-top: 26px; display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; padding: 44px; border-radius: 26px; background: linear-gradient(140deg, rgba(77,124,255,.14), rgba(254,44,85,.1)); border: 1px solid var(--line-soft); }
.kol-copy h3 { font-size: 26px; }
.kol-copy > p { margin-top: 12px; font-size: 14.5px; color: var(--text-2); }
.kol-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 26px; }
.kol-stats li { display: flex; flex-direction: column; gap: 2px; padding: 14px 16px; border-radius: 12px; background: rgba(10,13,20,.45); border: 1px solid var(--line-soft); }
.kol-stats b { font-size: 20px; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.kol-stats span { font-size: 12.5px; color: var(--text-2); }
.kol-visual img { border-radius: 16px; }

/* ---------- 案例 ---------- */
.cases { background: var(--light-bg); color: var(--light-text); }
.cases.cases .section-desc { color: var(--light-text-2); }

.case-filters { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 32px; }
.cfilter { padding: 10px 20px; font-size: 13.5px; border-radius: 999px; color: var(--light-text-2); background: #fff; border: 1px solid var(--light-line); transition: all .3s var(--ease); }
.cfilter:hover { color: var(--light-text); transform: translateY(-2px); }
.cfilter.is-active { color: #fff; background: linear-gradient(120deg, #0f172a, #334155); border-color: transparent; box-shadow: 0 12px 26px -16px rgba(15,23,42,.8); }

.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.case-card { display: flex; flex-direction: column; padding: 28px; border-radius: 20px; background: #fff; border: 1px solid var(--light-line); box-shadow: 0 16px 40px -30px rgba(15,23,42,.4); transition: transform .45s var(--ease), box-shadow .45s, border-color .45s; }
.case-card:hover { transform: translateY(-6px); box-shadow: 0 26px 50px -28px rgba(15,23,42,.4); border-color: rgba(77,124,255,.35); }
.case-card.is-hidden { display: none; }
.case-tag { align-self: flex-start; font-size: 11.5px; letter-spacing: .04em; color: #3b5bdb; padding: 4px 12px; border-radius: 999px; background: rgba(77,124,255,.1); }
.case-card h3 { font-size: 17px; margin-top: 14px; line-height: 1.45; }
.case-card > p { font-size: 13.5px; color: var(--light-text-2); margin-top: 10px; line-height: 1.75; flex: 1; }
.case-nums { display: flex; flex-wrap: wrap; gap: 20px; margin-top: 20px; padding-top: 18px; border-top: 1px dashed var(--light-line); }
.case-nums strong { display: block; font-size: 20px; letter-spacing: -.02em; background: linear-gradient(120deg, #0f172a, #4d7cff); -webkit-background-clip: text; background-clip: text; color: transparent; }
.case-nums span { font-size: 12px; color: #8a94a6; }

/* ---------- 服务优势 ---------- */
.adv-trio { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.adv-card { position: relative; padding: 34px 30px; border-radius: var(--radius); background: linear-gradient(170deg, rgba(255,255,255,.07), rgba(255,255,255,.015)); border: 1px solid var(--line-soft); transition: transform .5s var(--ease), border-color .5s; }
.adv-card:hover { transform: translateY(-6px); border-color: rgba(77,124,255,.4); }
.adv-no { position: absolute; top: 26px; right: 28px; font-size: 13px; font-weight: 700; letter-spacing: .1em; color: var(--red); }
.adv-card h3 { font-size: 26px; }
.adv-sub { font-size: 13.5px; color: var(--cyan); margin-top: 6px; }
.adv-card ul { margin-top: 22px; display: grid; gap: 14px; }
.adv-card li { font-size: 13.5px; color: var(--text-2); line-height: 1.7; padding-left: 16px; position: relative; }
.adv-card li::before { content: ""; position: absolute; left: 0; top: .62em; width: 6px; height: 6px; border-radius: 2px; background: var(--grad); }
.adv-card li b { display: block; color: #fff; font-weight: 600; }

.lifecycle { margin-top: 26px; padding: 44px; border-radius: 26px; background: rgba(255,255,255,.03); border: 1px solid var(--line-soft); }
.lc-title { font-size: 22px; margin-bottom: 34px; }
.lc-track { position: relative; display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.lc-track::before { content: ""; position: absolute; left: 0; right: 0; top: 5px; height: 1px; background: linear-gradient(90deg, rgba(37,244,238,.6), rgba(77,124,255,.5), rgba(254,44,85,.6)); }
.lc-step { position: relative; padding-top: 30px; }
.lc-dot { position: absolute; top: 0; left: 0; width: 11px; height: 11px; border-radius: 50%; background: var(--ink); border: 2px solid var(--cyan); box-shadow: 0 0 0 4px rgba(37,244,238,.14); }
.lc-step em { font-style: normal; font-size: 12px; letter-spacing: .1em; color: var(--text-3); }
.lc-step strong { display: block; font-size: 16px; margin-top: 6px; }
.lc-step p { font-size: 13px; color: var(--text-2); margin-top: 10px; line-height: 1.75; }
.lc-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.lc-tags span { font-size: 11.5px; color: var(--text-2); padding: 3px 10px; border-radius: 999px; border: 1px solid var(--line); }

.resource { margin-top: 26px; padding: 44px; border-radius: 26px; background: linear-gradient(150deg, rgba(77,124,255,.1), rgba(37,244,238,.05)); border: 1px solid var(--line-soft); }
.resource-head h3 { font-size: 24px; }
.resource-head p { margin-top: 8px; font-size: 14px; color: var(--text-2); }
.studio-grid { display: grid; grid-template-columns: repeat(4, 1fr); grid-auto-rows: 170px; gap: 14px; margin-top: 26px; }
.sg { position: relative; margin: 0; border-radius: 16px; overflow: hidden; }
.sg img { width: 100%; height: 100%; object-fit: cover; transition: transform .8s var(--ease); }
.sg:hover img { transform: scale(1.06); }
.sg figcaption { position: absolute; left: 12px; bottom: 12px; font-size: 12px; color: #fff; padding: 4px 12px; border-radius: 999px; background: rgba(10,13,20,.6); backdrop-filter: blur(8px); }
.sg-1 { grid-column: span 2; grid-row: span 2; }
.sg-5 { grid-column: span 2; }

.hosts { margin-top: 40px; }
.hosts-head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.hosts-head h4 { font-size: 18px; }
.hosts-note { font-size: 12px; color: var(--text-3); }
.host-list { display: grid; grid-template-columns: repeat(9, 1fr); gap: 12px; margin-top: 20px; }
.host { text-align: center; }
.host img { width: 100%; aspect-ratio: 1; object-fit: cover; border-radius: 14px; border: 1px solid var(--line); transition: transform .4s var(--ease), border-color .4s; }
.host:hover img { transform: translateY(-4px); border-color: rgba(37,244,238,.5); }
.host b { display: block; font-size: 12px; margin-top: 10px; }
.host span { display: block; font-size: 11px; color: var(--text-3); line-height: 1.4; margin-top: 2px; }
/* ---------- 合作模式（深色主题） ---------- */
.cooperation { color: var(--text); }
.plan-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; align-items: stretch; }
.plan { position: relative; display: flex; flex-direction: column; padding: 30px 26px; border-radius: 22px; background: linear-gradient(170deg, rgba(255,255,255,.07), rgba(255,255,255,.015)); border: 1px solid var(--line-soft); box-shadow: var(--shadow-dark); transition: transform .45s var(--ease), box-shadow .45s, border-color .45s; }
.plan:hover { transform: translateY(-6px); border-color: rgba(77,124,255,.35); box-shadow: 0 32px 64px -34px rgba(0,0,0,.9); }
.plan--hot { background: linear-gradient(165deg, rgba(37,244,238,.14), rgba(77,124,255,.12) 55%, rgba(254,44,85,.12)); border-color: rgba(37,244,238,.32); box-shadow: 0 26px 60px -30px rgba(37,244,238,.4); }
.plan-badge { align-self: flex-start; font-size: 11.5px; padding: 4px 12px; border-radius: 999px; color: var(--text-2); background: rgba(255,255,255,.06); }
.plan--hot .plan-badge { color: #06090f; background: var(--grad); font-weight: 600; }
.plan h3 { font-size: 24px; margin-top: 14px; }
.plan-for { font-size: 13px; color: var(--text-2); margin-top: 8px; min-height: 44px; }
.plan-block { margin-top: 20px; padding-top: 18px; border-top: 1px solid var(--line-soft); }
.plan-block em { font-style: normal; font-size: 12px; letter-spacing: .06em; color: var(--text-3); }
.plan-block ul { margin-top: 10px; display: grid; gap: 8px; }
.plan-block li { font-size: 13.5px; color: var(--text-2); padding-left: 16px; position: relative; }
.plan-block li::before { content: ""; position: absolute; left: 0; top: .62em; width: 6px; height: 6px; border-radius: 50%; background: linear-gradient(120deg, #25f4ee, #4d7cff); }
.plan-block p { margin-top: 8px; font-size: 13.5px; color: var(--text-2); line-height: 1.8; }
.plan-btn { margin-top: auto; text-align: center; padding: 13px; border-radius: 999px; font-size: 14px; font-weight: 600; color: var(--text); border: 1px solid var(--line); transition: all .35s var(--ease); }
.plan-btn:hover { background: rgba(255,255,255,.08); border-color: rgba(255,255,255,.24); }
.plan--hot .plan-btn { background: var(--grad); color: #06090f; border-color: transparent; }
.plan--hot .plan-btn:hover { filter: brightness(1.08); }

/* ---------- 联系 ---------- */
.contact { position: relative; padding: 110px 0; overflow: hidden; background: radial-gradient(90% 120% at 20% 0%, #16203a 0%, #0a0d14 60%); }
.contact-bg { position: absolute; inset: 0; pointer-events: none; }
.orb-4 { width: 420px; height: 420px; background: #25f4ee; top: -120px; left: 10%; opacity: .16; }
.orb-5 { width: 460px; height: 460px; background: #fe2c55; bottom: -200px; right: 0; opacity: .18; }
.contact-inner { position: relative; display: grid; grid-template-columns: 1.15fr .85fr; gap: 60px; align-items: center; }
.contact-logo { width: 52px; height: 52px; border-radius: 14px; background: #fff; padding: 5px; object-fit: contain; margin-bottom: 24px; }
.contact-copy h2 { font-size: clamp(28px, 3.4vw, 44px); letter-spacing: -.025em; }
.contact-copy > p { margin-top: 18px; font-size: 15px; color: var(--text-2); max-width: 520px; }
.contact-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 32px; }
.contact-qrs { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.contact-qrs figure { margin: 0; padding: 18px; border-radius: 20px; background: rgba(255,255,255,.05); border: 1px solid var(--line); text-align: center; backdrop-filter: blur(10px); transition: transform .4s var(--ease), border-color .4s; }
.contact-qrs figure:hover { transform: translateY(-4px); border-color: rgba(37,244,238,.4); }
.contact-qrs img { width: 100%; border-radius: 12px; background: #fff; }
.contact-qrs figcaption { margin-top: 12px; font-size: 12.5px; color: var(--text-2); }

/* ---------- 友情链接 ---------- */
.friend-links { background: #06090f; border-top: 1px solid var(--line-soft); padding: 30px 0; }
.fl-inner { display: flex; align-items: center; flex-wrap: wrap; gap: 12px 22px; }
.fl-title { font-size: 13.5px; font-weight: 600; letter-spacing: .02em; color: var(--text-2); }
.fl-title::after { content: "："; }
.fl-list { display: flex; flex-wrap: wrap; gap: 10px 12px; }
.fl-list a {
  display: inline-block;
  padding: 6px 15px;
  border-radius: 999px;
  font-size: 13px;
  color: var(--text-3);
  border: 1px solid var(--line-soft);
  background: rgba(255, 255, 255, .03);
  transition: color .3s, border-color .3s, background .3s, transform .3s;
}
.fl-list a:hover { color: #fff; border-color: rgba(37, 244, 238, .45); background: rgba(37, 244, 238, .08); transform: translateY(-2px); }

/* ---------- 页脚 ---------- */
.site-footer { background: #06090f; border-top: 1px solid var(--line-soft); padding: 56px 0 26px; }
.footer-inner { display: flex; justify-content: space-between; gap: 40px; flex-wrap: wrap; }
.footer-brand { display: flex; gap: 16px; align-items: flex-start; max-width: 560px; }
.footer-brand img { width: 42px; height: 42px; border-radius: 10px; background: #fff; padding: 4px; object-fit: contain; }
.footer-brand p { font-size: 13px; color: var(--text-3); line-height: 1.9; }
.footer-links { display: flex; flex-wrap: wrap; gap: 8px 24px; align-content: flex-start; }
.footer-links a { font-size: 13.5px; color: var(--text-2); transition: color .3s; }
.footer-links a:hover { color: #fff; }
.footer-bottom { display: flex; justify-content: space-between; gap: 8px 16px; flex-wrap: wrap; margin-top: 36px; padding-top: 22px; border-top: 1px solid var(--line-soft); font-size: 12px; color: var(--text-3); }
.footer-bottom a { color: var(--text-3); transition: color .3s; }
.footer-bottom a:hover { color: #fff; }

/* ---------- 常见问答 ---------- */
.faq { background: var(--light-bg); color: var(--light-text); }
.faq.faq .section-desc { color: var(--light-text-2); }

.faq-list { max-width: 900px; margin: 0 auto; display: grid; gap: 14px; }
.faq-item {
  border-radius: 18px;
  background: #fff;
  border: 1px solid var(--light-line);
  box-shadow: 0 16px 40px -34px rgba(15, 23, 42, .5);
  overflow: hidden;
  transition: border-color .35s var(--ease), box-shadow .35s var(--ease);
}
.faq-item[open] { border-color: rgba(77, 124, 255, .35); box-shadow: 0 24px 50px -34px rgba(15, 23, 42, .55); }
.faq-item summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px 24px;
  cursor: pointer;
  list-style: none;
  transition: background .3s;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { background: rgba(77, 124, 255, .04); }
.faq-no { flex: none; font-size: 12px; font-weight: 700; letter-spacing: .06em; color: #3b5bdb; padding: 3px 10px; border-radius: 6px; background: rgba(77, 124, 255, .1); }
.faq-item h3 { flex: 1; min-width: 0; font-size: 16px; line-height: 1.5; }
.faq-icon { position: relative; flex: none; width: 26px; height: 26px; border-radius: 50%; border: 1px solid var(--light-line); transition: background .35s var(--ease), border-color .35s var(--ease), transform .35s var(--ease); }
.faq-icon::before,
.faq-icon::after { content: ""; position: absolute; top: 50%; left: 50%; background: var(--light-text); border-radius: 2px; transform: translate(-50%, -50%); transition: background .35s, opacity .35s; }
.faq-icon::before { width: 11px; height: 1.5px; }
.faq-icon::after { width: 1.5px; height: 11px; }
.faq-item[open] .faq-icon { background: var(--grad); border-color: transparent; transform: rotate(180deg); }
.faq-item[open] .faq-icon::before,
.faq-item[open] .faq-icon::after { background: #fff; }
.faq-item[open] .faq-icon::after { opacity: 0; }

.faq-body { padding: 0 24px 24px 66px; }
.faq-body p { font-size: 14px; line-height: 1.85; color: var(--light-text-2); text-align: justify; text-justify: inter-ideograph; word-break: break-word; }
.faq-body p + p,
.faq-body p + .faq-steps,
.faq-body .faq-steps + p { margin-top: 12px; }
.faq-steps { display: grid; gap: 10px; margin-top: 12px; counter-reset: faqStep; }
.faq-steps li { position: relative; padding-left: 30px; font-size: 14px; line-height: 1.8; color: var(--light-text-2); text-align: justify; text-justify: inter-ideograph; word-break: break-word; counter-increment: faqStep; }
.faq-steps li::before { content: counter(faqStep); position: absolute; left: 0; top: .28em; width: 20px; height: 20px; display: grid; place-items: center; font-size: 11px; font-weight: 700; color: #3b5bdb; border-radius: 6px; background: rgba(77, 124, 255, .1); }
.faq-steps li b { color: var(--light-text); font-weight: 600; margin-right: 6px; }

/* ---------- 返回顶部 ---------- */
.back-top { position: fixed; right: 26px; bottom: 26px; z-index: 90; width: 46px; height: 46px; border-radius: 50%; background: rgba(17,22,31,.85); border: 1px solid var(--line); color: #fff; font-size: 18px; backdrop-filter: blur(10px); opacity: 0; visibility: hidden; transform: translateY(12px); transition: all .4s var(--ease); }
.back-top.is-show { opacity: 1; visibility: visible; transform: translateY(0); }
.back-top:hover { background: var(--grad); color: #06090f; }

/* ---------- 滚动动效 ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }
.reveal:nth-child(2) { transition-delay: .08s; }
.reveal:nth-child(3) { transition-delay: .16s; }
.reveal:nth-child(4) { transition-delay: .24s; }
.reveal:nth-child(5) { transition-delay: .32s; }
.reveal:nth-child(6) { transition-delay: .4s; }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1120px) {
  .hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .hero-visual { order: -1; }
  .phone-frame { width: min(100%, 340px); }
  .fc-1 { left: 0; }
  .fc-2 { right: 0; }
  .about-layout, .about-bottom, .kol, .contact-inner { grid-template-columns: 1fr; }
  .service-grid, .case-grid, .adv-trio { grid-template-columns: repeat(2, 1fr); }
  .plan-grid { grid-template-columns: repeat(2, 1fr); }
  .host-list { grid-template-columns: repeat(5, 1fr); }
  .studio-grid { grid-template-columns: repeat(2, 1fr); }
  .sg-1 { grid-column: span 2; grid-row: span 1; }
  .sg-5 { grid-column: span 2; }
  .lc-track { grid-template-columns: repeat(2, 1fr); row-gap: 34px; }
  .lc-track::before { display: none; }
}

@media (max-width: 860px) {
  .section { padding: 76px 0; }
  .container { width: min(100% - 36px, var(--container)); }
  .nav-toggle { display: block; }
  .nav { position: absolute; top: 100%; left: 0; right: 0; flex-direction: column; align-items: stretch; gap: 4px; padding: 14px 18px 20px; background: rgba(8,11,17,.97); backdrop-filter: blur(20px); border-bottom: 1px solid var(--line-soft); transform: translateY(-12px); opacity: 0; visibility: hidden; transition: all .35s var(--ease); }
  .nav.is-open { transform: none; opacity: 1; visibility: visible; }
  .nav a { padding: 13px 16px; font-size: 15px; border-radius: 10px; }
  .nav a.nav-cta { margin: 8px 0 0; text-align: center; }
  /* 移动端下拉改为展开列表 */
  .nav-item { position: static; }
  .nav-drop-btn { justify-content: space-between; }
  .nav-drop {
    position: static;
    min-width: 0;
    margin: 4px 0 6px;
    padding: 6px;
    border-radius: 12px;
    background: rgba(255, 255, 255, .04);
    box-shadow: none;
    backdrop-filter: none;
    transform: none;
    display: none;
    opacity: 1;
    visibility: visible;
  }
  .nav-drop::before { display: none; }
  .nav-item--drop:hover .nav-drop,
  .nav-item--drop:focus-within .nav-drop { display: none; }
  .nav-item--drop.is-open .nav-drop { display: block; transform: none; }
  .nav-drop a { padding: 11px 14px; font-size: 14px; }
  .hero { min-height: auto; padding: 110px 0 70px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 20px 14px; }
  .hero-tags li { font-size: 12.5px; padding: 6px 13px; }
  .float-card { padding: 10px 14px; }
  .float-card strong { font-size: 16px; }
  .fc-3 { display: none; }
  .trend-grid { grid-template-columns: 1fr; }
  .trend-card--wide { grid-column: span 1; }
  .pain { padding: 26px; }
  .pain-list { grid-template-columns: 1fr; }
  .global { padding: 26px; margin-top: 60px; }
  .global-map { overflow-x: auto; }
  .global-map svg { min-width: 640px; }
  .about-bottom { margin-top: 60px; gap: 44px; }
  .about-gallery { grid-template-rows: 120px 120px; }
  .service-grid, .case-grid, .adv-trio, .plan-grid { grid-template-columns: 1fr; }
  .kol { padding: 26px; }
  .kol-stats { grid-template-columns: 1fr; }
  .lifecycle, .resource { padding: 26px; }
  .lc-track { grid-template-columns: 1fr; }
  .host-list { grid-template-columns: repeat(3, 1fr); }
  .contact { padding: 76px 0; }
  .contact-qrs { max-width: 380px; }
  .faq-item summary { padding: 16px 18px; gap: 10px; }
  .faq-item h3 { font-size: 15px; }
  .faq-no { font-size: 11px; padding: 2px 8px; }
  .faq-body { padding: 0 18px 20px; }
  .faq-body p, .faq-steps li { font-size: 13.5px; }
  .footer-inner { flex-direction: column; gap: 26px; }
  .back-top { right: 16px; bottom: 16px; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 34px; }
  .hero-title-row { gap: 10px 14px; }
  .hero-site-link { padding: 9px 18px; font-size: 14px; gap: 6px; }
  .hero-site-link svg { width: 13px; height: 13px; }
  .hero-actions .btn { flex: 1; justify-content: center; }
  .brand-text { font-size: 15px; }
  .about-stats { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .studio-grid { grid-auto-rows: 140px; }
  .case-nums { gap: 14px; }
  .contact-qrs { gap: 12px; }
  .friend-links { padding: 24px 0; }
  .fl-inner { gap: 10px 16px; }
  .fl-list a { padding: 5px 12px; font-size: 12.5px; }
}