/* ============================================================
   ACE PATH — 企业 AI 落地增长伙伴
   Design tokens
   ============================================================ */
:root {
  /* 主色 */
  --navy:        #0B1F4E;   /* 深海蓝 */
  --navy-deep:   #071535;
  --navy-soft:   #0E2A6B;
  --blue:        #1677FF;   /* AI 蓝 */
  --cyan:        #00C6FF;   /* 青蓝 */
  --white:       #FFFFFF;
  --ink:         #101B36;
  --ink-soft:    #4A5878;
  --line:        rgba(11, 31, 78, 0.09);

  /* 字体：英文 Montserrat；中文 思源黑体 / HarmonyOS Sans */
  --font-en: "Montserrat", "Helvetica Neue", Arial, sans-serif;
  --font-cn: "HarmonyOS Sans SC", "Source Han Sans SC", "Noto Sans SC",
             "PingFang SC", "Microsoft YaHei", sans-serif;

  --radius: 18px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-cn);
  color: var(--ink);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

.container { width: min(1180px, 92vw); margin: 0 auto; }

/* 渐变文字 */
.grad-text {
  background: linear-gradient(92deg, var(--blue), var(--cyan));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------- 导航 Logo 角标 ---------- */
.nav-logo-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}
.nav-logo-icon {
  height: 38px;
  width: auto;
  flex: none;
  border-radius: 4px;
}

/* ============ 通用按钮 ============ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-cn);
  font-weight: 600;
  border-radius: 999px;
  cursor: pointer;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease),
              background 0.35s, color 0.35s, border-color 0.35s;
  white-space: nowrap;
}
.btn-lg { padding: 17px 34px; font-size: 16px; }
.btn-sm { padding: 10px 22px; font-size: 14px; }

.btn-primary {
  color: #fff;
  background: linear-gradient(96deg, var(--blue) 10%, #2E8BFF 60%, var(--cyan) 130%);
  box-shadow: 0 8px 28px rgba(22, 119, 255, 0.38);
}
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 38px rgba(22, 119, 255, 0.5);
}
.btn-arrow { transition: transform 0.35s var(--ease); font-family: var(--font-en); }
.btn:hover .btn-arrow { transform: translateX(5px); }

.btn-ghost {
  color: #DCE9FF;
  border: 1px solid rgba(140, 180, 255, 0.42);
  background: rgba(255, 255, 255, 0.03);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}
.btn-ghost:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  transform: translateY(-3px);
}

/* ============ 滚动显现动画 ============ */
[data-reveal] {
  opacity: 0;
  transform: translateY(34px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}
[data-reveal].revealed { opacity: 1; transform: none; }

/* ============================================================
   导航
   ============================================================ */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  transition: background 0.4s, box-shadow 0.4s, border-color 0.4s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(7, 21, 53, 0.82);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom-color: rgba(120, 160, 255, 0.12);
}
.nav-inner {
  display: flex;
  align-items: center;
  gap: 36px;
  height: 76px;
}
.nav-logo {
  font-family: var(--font-en);
  font-weight: 800;
  font-size: 22px;
  letter-spacing: 0.04em;
  color: #fff;
  display: flex;
  flex-direction: column;
  line-height: 1.05;
}
.nav-logo .logo-path { color: var(--cyan); }
.nav-logo-sub {
  font-family: var(--font-cn);
  font-style: normal;
  font-weight: 400;
  font-size: 10px;
  letter-spacing: 0.28em;
  color: rgba(210, 228, 255, 0.62);
  margin-top: 3px;
}
.nav-links { display: flex; gap: 30px; margin-left: auto; }
.nav-links a {
  color: rgba(222, 235, 255, 0.78);
  font-size: 14.5px;
  position: relative;
  padding: 6px 0;
  transition: color 0.3s;
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 2px;
  background: linear-gradient(90deg, var(--blue), var(--cyan));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s var(--ease);
}
.nav-links a:hover { color: #fff; }
.nav-links a:hover::after { transform: scaleX(1); }

.nav-toggle { display: none; }

.nav-mobile {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 12px 5vw 22px;
  background: rgba(7, 21, 53, 0.96);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}
.nav-mobile a {
  color: rgba(222, 235, 255, 0.85);
  padding: 12px 4px;
  font-size: 15px;
  border-bottom: 1px solid rgba(120, 160, 255, 0.1);
}
.nav-mobile a.btn { border-bottom: none; margin-top: 10px; justify-content: center; }
.nav.open .nav-mobile { display: flex; }

/* ============================================================
   第一屏 Hero
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background:
    radial-gradient(1100px 620px at 78% 18%, rgba(22, 119, 255, 0.16), transparent 60%),
    radial-gradient(900px 600px at 12% 88%, rgba(0, 198, 255, 0.09), transparent 55%),
    linear-gradient(178deg, var(--navy-deep) 0%, var(--navy) 55%, #0A2158 100%);
  color: #fff;
  overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.hero-glow { position: absolute; border-radius: 50%; filter: blur(90px); opacity: 0.5; }
.hero-glow-1 {
  width: 520px; height: 520px; right: -120px; top: -80px;
  background: radial-gradient(circle, rgba(22, 119, 255, 0.4), transparent 68%);
}
.hero-glow-2 {
  width: 420px; height: 420px; left: -140px; bottom: -120px;
  background: radial-gradient(circle, rgba(0, 198, 255, 0.22), transparent 68%);
}
.hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(120, 165, 255, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120, 165, 255, 0.055) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(70% 70% at 50% 42%, #000 30%, transparent 100%);
  mask-image: radial-gradient(70% 70% at 50% 42%, #000 30%, transparent 100%);
}

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 40px;
  align-items: center;
  padding: 150px 0 90px;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-en);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.32em;
  color: var(--cyan);
  margin-bottom: 26px;
}
.hero-eyebrow .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 0 rgba(0, 198, 255, 0.6);
  animation: pulse 2.4s infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(0, 198, 255, 0.55); }
  70%  { box-shadow: 0 0 0 12px rgba(0, 198, 255, 0); }
  100% { box-shadow: 0 0 0 0 rgba(0, 198, 255, 0); }
}

.hero-title {
  font-family: var(--font-en);
  font-weight: 900;
  font-size: clamp(52px, 7vw, 88px);
  letter-spacing: 0.015em;
  line-height: 1.04;
}
.hero-subtitle {
  font-size: clamp(22px, 2.6vw, 30px);
  font-weight: 600;
  color: #EAF2FF;
  margin-top: 18px;
  letter-spacing: 0.06em;
}
.hero-slogan {
  font-family: var(--font-en);
  font-size: clamp(17px, 1.9vw, 21px);
  font-weight: 600;
  letter-spacing: 0.05em;
  background: linear-gradient(90deg, var(--cyan), #8FE3FF);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-top: 12px;
}
.hero-desc {
  color: rgba(214, 229, 255, 0.72);
  font-size: 16px;
  line-height: 1.9;
  margin-top: 26px;
  max-width: 520px;
}
.hero-actions { display: flex; gap: 16px; margin-top: 40px; flex-wrap: wrap; }

/* --- 右侧视觉：AI 转型路径图 --- */
.hero-visual { position: relative; display: flex; justify-content: center; }
.path-viz { position: relative; width: min(460px, 100%); }
.viz-halo {
  position: absolute;
  inset: 8% 14%;
  background: radial-gradient(circle, rgba(22, 119, 255, 0.24), transparent 65%);
  filter: blur(30px);
  z-index: 0;
}
.path-viz svg { position: relative; z-index: 1; width: 100%; height: auto; }

.path-main {
  stroke-dasharray: 1400;
  stroke-dashoffset: 1400;
  animation: drawPath 2.6s var(--ease) 0.3s forwards;
}
@keyframes drawPath { to { stroke-dashoffset: 0; } }

.viz-node, .viz-core, .viz-goal {
  opacity: 0;
  animation: nodeIn 0.8s var(--ease) var(--d, 0s) forwards;
}
/* 路径图各元素入场延迟 */
.viz-core    { --d: 0.1s; }
.viz-node-1  { --d: 0.2s; }
.viz-node-2  { --d: 0.45s; }
.viz-node-3  { --d: 0.7s; }
.viz-node-4  { --d: 0.95s; }
.viz-goal    { --d: 1.15s; }
@keyframes nodeIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: none; }
}

.viz-label  { font-family: var(--font-en); font-size: 11px; font-weight: 700; fill: var(--cyan); letter-spacing: 0.1em; }
.viz-text   { font-size: 14px; font-weight: 500; fill: rgba(220, 233, 255, 0.9); letter-spacing: 0.1em; }
.viz-core-en   { font-family: var(--font-en); font-size: 22px; font-weight: 800; fill: #fff; letter-spacing: 0.14em; }
.viz-core-path { font-family: var(--font-en); font-size: 15px; font-weight: 700; fill: var(--cyan); letter-spacing: 0.3em; }
.viz-goal-text { font-family: var(--font-en); font-size: 17px; font-weight: 800; fill: var(--cyan); letter-spacing: 0.22em; }
.viz-caption   { font-family: var(--font-en); font-size: 10.5px; font-weight: 600; fill: rgba(160, 190, 240, 0.55); letter-spacing: 0.42em; }

/* 向下滚动提示 */
.hero-scroll {
  position: absolute;
  left: 50%; bottom: 30px;
  transform: translateX(-50%);
  width: 26px; height: 42px;
  border: 1.5px solid rgba(160, 195, 255, 0.45);
  border-radius: 14px;
  display: flex;
  justify-content: center;
}
.hero-scroll span {
  width: 3px; height: 8px;
  margin-top: 8px;
  border-radius: 3px;
  background: var(--cyan);
  animation: scrollHint 1.8s infinite;
}
@keyframes scrollHint {
  0%   { opacity: 0; transform: translateY(0); }
  35%  { opacity: 1; }
  100% { opacity: 0; transform: translateY(14px); }
}

/* ============================================================
   通用 Section
   ============================================================ */
.section { padding: 120px 0; position: relative; }

.section-head { text-align: center; max-width: 820px; margin: 0 auto 72px; }
.section-eyebrow {
  font-family: var(--font-en);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.34em;
  color: var(--blue);
  margin-bottom: 18px;
}
.section-title {
  font-size: clamp(28px, 3.6vw, 42px);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: 0.02em;
}
.section-sub {
  margin-top: 20px;
  color: var(--ink-soft);
  font-size: 16.5px;
  letter-spacing: 0.04em;
}

/* ============================================================
   第二屏：为什么需要 ACE PATH
   ============================================================ */
.why { background: linear-gradient(180deg, #F6F9FF 0%, #FFFFFF 100%); }

.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.why-card {
  position: relative;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 44px 36px 40px;
  overflow: hidden;
  transition: transform 0.45s var(--ease), box-shadow 0.45s var(--ease), border-color 0.45s;
}
.why-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--blue), var(--cyan));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s var(--ease);
}
.why-card:hover {
  transform: translateY(-8px);
  border-color: rgba(22, 119, 255, 0.25);
  box-shadow: 0 24px 54px rgba(11, 31, 78, 0.1);
}
.why-card:hover::before { transform: scaleX(1); }

.why-num {
  display: block;
  font-family: var(--font-en);
  font-size: 52px;
  font-weight: 900;
  line-height: 1;
  background: linear-gradient(180deg, rgba(22, 119, 255, 0.9), rgba(22, 119, 255, 0.14));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 24px;
}
.why-card h3 { font-size: 21px; font-weight: 700; margin-bottom: 14px; letter-spacing: 0.02em; }
.why-card p { color: var(--ink-soft); font-size: 15.5px; line-height: 1.9; }

.why-note {
  margin: 64px auto 0;
  text-align: center;
  font-size: clamp(18px, 2.2vw, 23px);
  font-weight: 600;
  color: var(--navy);
  letter-spacing: 0.03em;
  position: relative;
  width: fit-content;
  padding: 0 18px;
}
.why-note::before, .why-note::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 64px;
  height: 1.5px;
  background: linear-gradient(90deg, transparent, var(--blue));
}
.why-note::before { right: 100%; }
.why-note::after  { left: 100%; transform: scaleX(-1); }

/* ============================================================
   第三屏：方法论 Framework
   ============================================================ */
.framework {
  background:
    radial-gradient(900px 500px at 50% 0%, rgba(22, 119, 255, 0.14), transparent 60%),
    linear-gradient(180deg, var(--navy-deep), var(--navy));
  color: #fff;
  overflow: hidden;
}
.framework .section-title { color: #fff; }
.framework .section-eyebrow { color: var(--cyan); }
.framework .section-sub { color: rgba(205, 222, 250, 0.6); }

.steps {
  position: relative;
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 14px;
}
.step-line {
  position: absolute;
  top: 34px; left: 4%; right: 4%;
  height: 2px;
  background: linear-gradient(90deg,
    rgba(22, 119, 255, 0.15), var(--blue) 25%, var(--cyan) 85%, rgba(0, 198, 255, 0.2));
}
.step { text-align: center; position: relative; }
.step-orb {
  width: 68px; height: 68px;
  margin: 0 auto 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-en);
  font-size: 26px;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(150deg, var(--navy-soft), #123C8F);
  border: 1.5px solid rgba(90, 150, 255, 0.5);
  box-shadow: 0 8px 24px rgba(0, 90, 220, 0.35), inset 0 0 18px rgba(0, 198, 255, 0.12);
  position: relative;
  z-index: 1;
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease), border-color 0.4s;
}
.step:hover .step-orb {
  transform: translateY(-6px) scale(1.06);
  border-color: var(--cyan);
  box-shadow: 0 14px 34px rgba(0, 150, 255, 0.5), inset 0 0 22px rgba(0, 198, 255, 0.22);
}
.step h4 {
  font-family: var(--font-en);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--cyan);
  margin-bottom: 8px;
}
.step p { font-size: 13.5px; color: rgba(210, 226, 252, 0.72); letter-spacing: 0.06em; }

/* ============================================================
   第四屏：服务
   ============================================================ */
.services { background: #fff; }

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.service-card {
  position: relative;
  border-radius: var(--radius);
  padding: 40px 30px 44px;
  background: linear-gradient(180deg, #F5F9FF 0%, #FFFFFF 100%);
  border: 1px solid var(--line);
  overflow: hidden;
  transition: transform 0.45s var(--ease), box-shadow 0.45s var(--ease), background 0.45s;
}
.service-card:hover {
  transform: translateY(-8px);
  background: linear-gradient(165deg, var(--navy) 0%, #123C8F 100%);
  box-shadow: 0 28px 60px rgba(11, 31, 78, 0.28);
}
.service-card:hover h3 { color: #fff; }
.service-card:hover .service-lead { color: rgba(215, 230, 255, 0.8); }
.service-card:hover li { color: rgba(215, 230, 255, 0.88); }
.service-card:hover li::before { background: var(--cyan); }
.service-card:hover .service-icon { color: var(--cyan); border-color: rgba(0, 198, 255, 0.5); background: rgba(0, 198, 255, 0.08); }
.service-card:hover .service-no { color: rgba(255, 255, 255, 0.16); }

.service-icon {
  width: 56px; height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--blue);
  background: rgba(22, 119, 255, 0.09);
  border: 1px solid rgba(22, 119, 255, 0.22);
  margin-bottom: 26px;
  transition: color 0.4s, background 0.4s, border-color 0.4s;
}
.service-icon svg { width: 27px; height: 27px; }
.service-no {
  position: absolute;
  top: 22px; right: 24px;
  font-family: var(--font-en);
  font-size: 44px;
  font-weight: 900;
  color: rgba(11, 31, 78, 0.07);
  line-height: 1;
  transition: color 0.4s;
}
.service-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 14px; letter-spacing: 0.02em; transition: color 0.4s; }
.service-lead { font-size: 14px; color: var(--ink-soft); margin-bottom: 12px; transition: color 0.4s; }
.service-card li {
  position: relative;
  font-size: 14.5px;
  color: var(--ink);
  padding: 7px 0 7px 18px;
  letter-spacing: 0.02em;
  transition: color 0.4s;
}
.service-card li::before {
  content: "";
  position: absolute;
  left: 0; top: 15px;
  width: 7px; height: 7px;
  border-radius: 2px;
  background: var(--blue);
  transition: background 0.4s;
}

/* ============================================================
   第五屏：价值主张
   ============================================================ */
.value {
  background: linear-gradient(180deg, #F6F9FF, #EDF4FF);
  overflow: hidden;
}
.value-bg { position: absolute; inset: 0; pointer-events: none; }
.value-glow {
  position: absolute;
  width: 720px; height: 720px;
  left: 50%; top: 50%;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(22, 119, 255, 0.1), transparent 62%);
}

.value-title {
  font-size: clamp(26px, 3.2vw, 38px);
  font-weight: 500;
  color: var(--ink-soft);
  letter-spacing: 0.04em;
}
.value-subtitle {
  font-size: clamp(30px, 4vw, 46px);
  font-weight: 800;
  margin-top: 16px;
  letter-spacing: 0.02em;
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.value-item {
  background: rgba(255, 255, 255, 0.82);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(22, 119, 255, 0.14);
  border-radius: var(--radius);
  padding: 46px 30px;
  text-align: center;
  transition: transform 0.45s var(--ease), box-shadow 0.45s var(--ease), border-color 0.45s;
}
.value-item:hover {
  transform: translateY(-8px);
  border-color: rgba(22, 119, 255, 0.4);
  box-shadow: 0 24px 52px rgba(22, 119, 255, 0.16);
}
.value-from { font-size: 22px; color: var(--ink-soft); letter-spacing: 0.06em; }
.value-to {
  font-size: 34px;
  font-weight: 800;
  background: linear-gradient(92deg, var(--blue), var(--cyan));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  letter-spacing: 0.08em;
}
.value-arrow { display: flex; justify-content: center; padding: 22px 0; }
.value-arrow span {
  position: relative;
  display: block;
  width: 2px; height: 40px;
  background: linear-gradient(180deg, rgba(22, 119, 255, 0.3), var(--blue));
}
.value-arrow span::after {
  content: "";
  position: absolute;
  left: 50%; bottom: -2px;
  transform: translateX(-50%);
  border-left: 6px solid transparent;
  border-right: 6px solid transparent;
  border-top: 8px solid var(--blue);
}

/* ============================================================
   第六屏：合作流程
   ============================================================ */
.process { background: #fff; }

.process-track {
  position: relative;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
  max-width: 980px;
  margin: 0 auto;
}
.process-line {
  position: absolute;
  top: 30px; left: 8%; right: 8%;
  height: 2px;
  background: linear-gradient(90deg, rgba(22, 119, 255, 0.15), var(--blue) 30%, var(--cyan));
}
.process-item { text-align: center; position: relative; }
.process-dot {
  width: 60px; height: 60px;
  margin: 0 auto 20px;
  border-radius: 16px;
  transform: rotate(45deg);
  background: linear-gradient(140deg, var(--blue), #0A53C7);
  box-shadow: 0 10px 26px rgba(22, 119, 255, 0.32);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 1;
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
}
.process-dot span {
  transform: rotate(-45deg);
  font-family: var(--font-en);
  font-weight: 800;
  font-size: 17px;
  color: #fff;
}
.process-item:hover .process-dot {
  transform: rotate(45deg) scale(1.1);
  box-shadow: 0 16px 36px rgba(22, 119, 255, 0.45);
}
.process-item h4 { font-size: 17px; font-weight: 700; letter-spacing: 0.06em; }

/* ============================================================
   实践案例
   ============================================================ */
.cases { background: #F6F9FF; }

.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.case-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 36px 30px 32px;
  transition: transform 0.45s var(--ease), box-shadow 0.45s var(--ease), border-color 0.45s;
}
.case-card:hover {
  transform: translateY(-8px);
  border-color: rgba(22, 119, 255, 0.3);
  box-shadow: 0 24px 54px rgba(11, 31, 78, 0.12);
}
.case-tag {
  align-self: flex-start;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--blue);
  background: rgba(22, 119, 255, 0.09);
  border: 1px solid rgba(22, 119, 255, 0.22);
  border-radius: 999px;
  padding: 5px 14px;
  margin-bottom: 20px;
}
.case-card h3 {
  font-size: 19px;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: 0.02em;
  margin-bottom: 14px;
}
.case-desc {
  flex: 1;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--ink-soft);
}
.case-results {
  margin-top: 22px;
  padding: 14px 16px;
  border-radius: 12px;
  background: linear-gradient(120deg, rgba(22, 119, 255, 0.08), rgba(0, 198, 255, 0.07));
  border-left: 3px solid var(--blue);
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--navy);
}
.case-results span {
  display: block;
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.24em;
  color: var(--blue);
  margin-bottom: 6px;
}

/* ============================================================
   行业前沿
   ============================================================ */
.news {
  background:
    radial-gradient(900px 480px at 50% 0%, rgba(22, 119, 255, 0.14), transparent 60%),
    linear-gradient(180deg, var(--navy-deep), var(--navy));
}
.news .section-title { color: #fff; }
.news .section-eyebrow { color: var(--cyan); }
.news .section-sub { color: rgba(205, 222, 250, 0.6); }

.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.news-card {
  display: flex;
  flex-direction: column;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(120, 160, 255, 0.18);
  border-radius: var(--radius);
  padding: 32px 28px 28px;
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  transition: transform 0.45s var(--ease), border-color 0.45s, background 0.45s;
}
.news-card:hover {
  transform: translateY(-8px);
  border-color: rgba(0, 198, 255, 0.5);
  background: rgba(255, 255, 255, 0.08);
}
.news-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}
.news-date {
  font-family: var(--font-en);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: rgba(170, 195, 240, 0.7);
}
.news-tag {
  font-size: 11.5px;
  color: var(--cyan);
  border: 1px solid rgba(0, 198, 255, 0.35);
  background: rgba(0, 198, 255, 0.08);
  border-radius: 999px;
  padding: 3px 11px;
  letter-spacing: 0.04em;
}
.news-card h3 {
  font-size: 17.5px;
  font-weight: 700;
  line-height: 1.6;
  color: #fff;
  margin-bottom: 12px;
}
.news-card p {
  flex: 1;
  font-size: 13.5px;
  line-height: 1.85;
  color: rgba(210, 226, 252, 0.7);
}
.news-link {
  margin-top: 18px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--cyan);
  letter-spacing: 0.04em;
  transition: color 0.3s, transform 0.3s var(--ease);
}
.news-link:hover { color: #7FE0FF; }

/* 动态内容空状态 */
.empty-note {
  grid-column: 1 / -1;
  text-align: center;
  padding: 48px 0;
  color: rgba(160, 185, 230, 0.6);
  font-size: 15px;
  letter-spacing: 0.05em;
}
.cases .empty-note { color: var(--ink-soft); }

/* 页脚管理入口 */
.footer-admin {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: rgba(150, 178, 230, 0.45);
  transition: color 0.3s;
}
.footer-admin:hover { color: var(--cyan); }

/* ============================================================
   第七屏：品牌承诺
   ============================================================ */
.promise {
  position: relative;
  padding: 170px 0 160px;
  background:
    radial-gradient(900px 480px at 50% 30%, rgba(22, 119, 255, 0.18), transparent 60%),
    linear-gradient(180deg, var(--navy-deep), var(--navy) 60%, #0A2158);
  color: #fff;
  overflow: hidden;
}
.promise-bg { position: absolute; inset: 0; pointer-events: none; }
.promise-glow {
  position: absolute;
  width: 640px; height: 640px;
  left: 50%; top: -180px;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(0, 198, 255, 0.14), transparent 64%);
  filter: blur(20px);
}
.promise .hero-grid { opacity: 0.6; }

.promise-inner { position: relative; text-align: center; }
.promise-title {
  font-size: clamp(30px, 4.4vw, 52px);
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: 0.03em;
}
.promise-brand { margin-top: 70px; }
.promise-logo {
  font-family: var(--font-en);
  font-size: 34px;
  font-weight: 900;
  letter-spacing: 0.08em;
}
.promise-logo span { color: var(--cyan); }
.promise-role {
  margin-top: 12px;
  font-size: 16px;
  color: rgba(216, 230, 255, 0.85);
  letter-spacing: 0.22em;
}
.promise-slogan {
  margin-top: 8px;
  font-size: 14px;
  color: rgba(150, 178, 230, 0.66);
  letter-spacing: 0.14em;
}
.promise-brand .btn { margin-top: 44px; }

/* ============================================================
   页脚
   ============================================================ */
.footer {
  background: var(--navy-deep);
  color: rgba(200, 216, 244, 0.75);
  border-top: 1px solid rgba(110, 150, 240, 0.12);
  padding: 54px 0 36px;
}
.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
  padding-bottom: 28px;
  border-bottom: 1px solid rgba(110, 150, 240, 0.12);
}
.footer-logo {
  font-family: var(--font-en);
  font-size: 24px;
  font-weight: 800;
  color: #fff;
  letter-spacing: 0.06em;
}
.footer-logo span { color: var(--cyan); }
.footer-en {
  margin-top: 6px;
  font-family: var(--font-en);
  font-size: 12px;
  letter-spacing: 0.26em;
  color: rgba(150, 178, 230, 0.6);
}
.footer-links { font-size: 14px; letter-spacing: 0.03em; }
.footer-links a { transition: color 0.3s; }
.footer-links a:hover { color: var(--cyan); }
.footer-sep { margin: 0 14px; color: rgba(150, 178, 230, 0.4); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 24px;
  font-size: 13px;
  color: rgba(150, 178, 230, 0.55);
}
.footer-icp {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid rgba(110, 150, 240, 0.12);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: rgba(150, 178, 230, 0.5);
}
.footer-icp a { transition: color 0.3s; }
.footer-icp a:hover { color: var(--cyan); }
.footer-icp-sep { color: rgba(150, 178, 230, 0.35); }

/* ============================================================
   卡片可点击（跳转详情）
   ============================================================ */
.card-link { cursor: pointer; }
.card-more {
  margin-top: 18px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-cn);
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--blue);
  transition: gap 0.3s var(--ease);
}
.news-card .card-more { color: var(--cyan); margin-top: 0; }
.card-link:hover .card-more { gap: 12px; }
.news-card-foot {
  margin-top: 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
}

/* ============================================================
   详情页（案例 / 新闻）
   ============================================================ */
.detail-page { background: var(--white); }

.dt-hero {
  position: relative;
  padding: 168px 0 64px;
  color: #fff;
  background:
    radial-gradient(900px 480px at 72% 0%, rgba(22, 119, 255, 0.22), transparent 62%),
    linear-gradient(180deg, #071535 0%, var(--navy) 70%, #0A1B44 100%);
  overflow: hidden;
}
.dt-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(120, 160, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120, 160, 255, 0.05) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(80% 90% at 50% 0%, #000 30%, transparent 100%);
  mask-image: radial-gradient(80% 90% at 50% 0%, #000 30%, transparent 100%);
  pointer-events: none;
}
.dt-hero-inner { position: relative; }
.dt-loading { color: rgba(205, 222, 250, 0.6); }
.dt-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13.5px;
  letter-spacing: 0.06em;
  color: rgba(205, 222, 250, 0.72);
  margin-bottom: 34px;
  transition: color 0.3s, gap 0.3s;
}
.dt-back:hover { color: var(--cyan); gap: 12px; }
.dt-chip {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--cyan);
  background: rgba(0, 198, 255, 0.1);
  border: 1px solid rgba(0, 198, 255, 0.35);
  border-radius: 999px;
  padding: 5px 16px;
  margin-bottom: 20px;
}
.dt-title {
  font-size: clamp(26px, 3.8vw, 42px);
  font-weight: 700;
  line-height: 1.45;
  letter-spacing: 0.02em;
  max-width: 820px;
}
.dt-meta {
  margin-top: 22px;
  display: flex;
  align-items: center;
  gap: 10px 22px;
  flex-wrap: wrap;
  font-size: 13px;
  color: rgba(205, 222, 250, 0.6);
}
.dt-meta span { display: inline-flex; align-items: center; gap: 7px; }
.dt-meta i {
  width: 4px; height: 4px;
  border-radius: 50%;
  background: rgba(0, 198, 255, 0.7);
}

.dt-article {
  width: min(820px, 92vw);
  margin: 0 auto;
  padding: 64px 0 30px;
}
.dt-summary {
  font-size: 16.5px;
  line-height: 2;
  color: var(--ink);
  background: linear-gradient(120deg, rgba(22, 119, 255, 0.07), rgba(0, 198, 255, 0.05));
  border-left: 3px solid var(--blue);
  border-radius: 0 12px 12px 0;
  padding: 20px 26px;
  margin-bottom: 40px;
}
.dt-body p {
  font-size: 15.5px;
  line-height: 2.1;
  color: var(--ink-soft);
  margin-bottom: 20px;
  letter-spacing: 0.01em;
}
.dt-body h2 {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 20px;
  font-weight: 700;
  color: var(--navy);
  margin: 44px 0 20px;
  letter-spacing: 0.02em;
}
.dt-body h2::before {
  content: "";
  width: 6px; height: 22px;
  border-radius: 3px;
  background: linear-gradient(180deg, var(--blue), var(--cyan));
}
.dt-body .news-link { color: var(--blue); margin-top: 0; }
.dt-body .news-link:hover { color: var(--cyan); }
.dt-results {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  background: linear-gradient(120deg, var(--navy) 0%, #12315F 100%);
  border-radius: 14px;
  padding: 24px 28px;
  margin: 40px 0 10px;
}
.dt-results b {
  flex: none;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--cyan);
  border: 1px solid rgba(0, 198, 255, 0.4);
  border-radius: 999px;
  padding: 4px 14px;
  margin-top: 2px;
}
.dt-results p { font-size: 15px; line-height: 1.9; color: rgba(220, 234, 255, 0.92); }

.dt-cta {
  width: min(820px, 92vw);
  margin: 30px auto 80px;
  text-align: center;
  border: 1px dashed rgba(22, 119, 255, 0.35);
  border-radius: 18px;
  padding: 44px 24px;
  background: linear-gradient(180deg, #F6F9FF, #FFFFFF);
}
.dt-cta p {
  font-size: 17px;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 22px;
}

.dt-notfound {
  width: min(820px, 92vw);
  margin: 0 auto;
  padding: 90px 0;
  text-align: center;
}
.dt-notfound h1 { font-size: 24px; color: var(--navy); margin-bottom: 14px; }
.dt-notfound p { color: var(--ink-soft); margin-bottom: 30px; }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1080px) {
  .hero-inner { grid-template-columns: 1fr; gap: 56px; padding-top: 130px; }
  .hero-copy { text-align: center; }
  .hero-desc br { display: none; }
  .hero-desc { margin: 26px auto 0; }
  .hero-actions { justify-content: center; }
  .steps { grid-template-columns: repeat(4, 1fr); gap: 34px 14px; }
  .step-line { display: none; }
  .service-grid { grid-template-columns: repeat(2, 1fr); }
  .case-grid, .news-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .section { padding: 88px 0; }
  .nav-links, .nav-cta { display: none; }
  .nav-toggle {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-left: auto;
    background: none;
    border: none;
    padding: 8px;
    cursor: pointer;
  }
  .nav-toggle span {
    display: block;
    width: 24px; height: 2px;
    background: #fff;
    border-radius: 2px;
  }
  .nav-inner { height: 66px; }
  .why-grid, .value-grid { grid-template-columns: 1fr; }
  .service-grid { grid-template-columns: 1fr; }
  .case-grid, .news-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: repeat(2, 1fr); gap: 30px 12px; }
  .process-track { grid-template-columns: 1fr; gap: 30px; }
  .process-line { display: none; }
  .why-note::before, .why-note::after { display: none; }
  .footer-top, .footer-bottom { flex-direction: column; text-align: center; }
  .footer-sep { margin: 0 8px; }
  .hero-actions .btn-lg { padding: 15px 26px; font-size: 15px; }
  .promise { padding: 110px 0; }
  .nav-mobile { padding-bottom: calc(20px + env(safe-area-inset-bottom, 0px)); }
}

/* 手机端（小屏）专属适配 */
@media (max-width: 480px) {
  .section { padding: 64px 0; }
  .nav-inner { height: 60px; }
  .nav-logo-icon { height: 32px; }
  .nav-logo-sub { display: none; }
  .hero { min-height: 0; }
  .hero-inner { padding: 108px 0 64px; gap: 44px; }
  .hero-actions { flex-direction: column; align-items: stretch; gap: 12px; }
  .hero-actions .btn { justify-content: center; width: 100%; }
  .path-viz { width: min(340px, 84vw); }
  .section-eyebrow { letter-spacing: 0.22em; margin-bottom: 14px; }
  .steps { gap: 26px 8px; }
  .step-orb { width: 56px; height: 56px; font-size: 21px; margin-bottom: 14px; }
  .step h4 { font-size: 13.5px; letter-spacing: 0.04em; }
  .step p { font-size: 12px; }
  .why-card { padding: 32px 24px 30px; }
  .why-num { font-size: 40px; }
  .service-card { padding: 32px 22px 34px; }
  .case-card, .news-card { padding: 26px 22px 24px; }
  .value-arrow { padding: 14px 0; }
  .process-dot { width: 52px; height: 52px; border-radius: 14px; }
  .promise { padding: 84px 0; }
  .promise-brand { margin-top: 48px; }
  .footer-top { gap: 28px; }
  .dt-hero { padding: 128px 0 48px; }
  .dt-article { padding: 48px 0 20px; }
  .dt-results { flex-direction: column; gap: 12px; padding: 20px 20px; }
  .dt-cta { padding: 36px 18px; margin-bottom: 60px; }
}