/* ==========================================================================
   奇点领航 · 个人品牌官网
   纯手写 CSS，零外部依赖：不引 CDN、不引在线字体
   —— 断网可开、大陆访问不会被外链阻塞
   ========================================================================== */

/* ---------------------------------------------------------------- 设计令牌 */
:root {
  /* 底色与表面 */
  --bg:            #F8F6F2;
  --bg-soft:       #F2EFE9;
  --surface:       #FFFFFF;

  /* 文字五档 */
  --ink:           #1A1A1A;
  --ink-2:         #5C5C5C;
  --ink-3:         #8A8A8A;
  --ink-4:         #B0B0B0;

  /* 主色：鼠尾草青 */
  --brand:         #6BA8A0;
  --brand-deep:    #4A7C75;
  --brand-tint:    #EAF2F0;
  --brand-tint-2:  #DCEAE7;

  /* 深色区：墨青绿 */
  --dark:          #233633;
  --dark-2:        #2C4440;
  --dark-3:        #1E2B29;
  --dark-ink:      #B8C8C4;
  --dark-ink-2:    #8FC1B9;
  --dark-ink-3:    #6E827E;

  /* 点缀：暖沙 */
  --accent:        #D4A574;

  /* 描边 */
  --line:          #E8EDEB;
  --line-strong:   #D6DEDC;

  /* 字体：中文系统字体栈，无需下载 */
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
          "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC",
          "Source Han Sans SC", "WenQuanYi Micro Hei", Arial, sans-serif;

  /* 圆角节奏 */
  --r-xs: 6px;
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 16px;
  --r-xl: 20px;
  --r-2xl: 24px;
  --r-pill: 999px;

  /* 阴影 */
  --sh-card:  0 12px 28px -8px rgba(16, 24, 22, .07);
  --sh-card-h:0 20px 40px -12px rgba(16, 24, 22, .13);
  --sh-btn:   0 8px 20px -4px rgba(107, 168, 160, .38);

  --maxw: 1280px;
  --pad-x: 80px;

  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* ---------------------------------------------------------------- 基础重置 */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6, p, figure, ul, ol, dl, dd {
  margin: 0;
}

ul, ol { padding: 0; list-style: none; }

img, svg { display: block; max-width: 100%; }

a {
  color: inherit;
  text-decoration: none;
  transition: color .2s var(--ease), opacity .2s var(--ease);
}

button, input, textarea, select {
  font: inherit;
  color: inherit;
}

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

/* 跳转到主内容（无障碍） */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  background: var(--dark);
  color: #fff;
  padding: 10px 18px;
  border-radius: 0 0 var(--r-sm) 0;
}
.skip-link:focus { left: 0; }

/* ---------------------------------------------------------------- 版心 */
.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--pad-x);
}

.section        { padding: 88px 0; }
.section--tight { padding: 64px 0; }
.section--flush { padding: 0; }

/* ============================================================== 通用组件 */

/* --- 眉题 / 标题组 --- */
.eyebrow {
  display: block;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--brand);
}

.head-group {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  text-align: center;
}

.h-sec {
  font-size: 38px;
  line-height: 1.35;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--ink);
}

.sub-sec {
  font-size: 16px;
  color: var(--ink-2);
  max-width: 720px;
}

/* --- 按钮 --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 16px 34px;
  border: 1px solid transparent;
  border-radius: 10px;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.2;
  cursor: pointer;
  white-space: nowrap;
  transition: transform .2s var(--ease), box-shadow .2s var(--ease),
              background-color .2s var(--ease), border-color .2s var(--ease),
              color .2s var(--ease);
}

.btn--primary {
  background: var(--brand);
  color: #fff;
  box-shadow: var(--sh-btn);
}
.btn--primary:hover {
  background: var(--brand-deep);
  transform: translateY(-2px);
  box-shadow: 0 12px 26px -6px rgba(107, 168, 160, .48);
}

.btn--ghost {
  background: var(--surface);
  color: var(--ink);
  border-color: var(--line-strong);
  font-weight: 500;
}
.btn--ghost:hover {
  border-color: var(--brand);
  color: var(--brand-deep);
  transform: translateY(-2px);
}

.btn--light {
  background: #fff;
  color: var(--dark);
}
.btn--light:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 30px -8px rgba(0, 0, 0, .35);
}

.btn--sm {
  padding: 10px 22px;
  font-size: 15px;
  border-radius: var(--r-sm);
}

.btn--block { width: 100%; }

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
}

/* --- 胶囊标签 --- */
.pill {
  display: inline-flex;
  align-items: center;
  padding: 10px 22px;
  border-radius: var(--r-pill);
  background: var(--surface);
  border: 1px solid var(--line-strong);
  font-size: 15px;
  font-weight: 500;
  color: var(--ink);
}

.pill--tint {
  background: var(--brand-tint);
  border-color: transparent;
  padding: 8px 18px;
  font-size: 14px;
  color: var(--brand-deep);
}

.pill--small {
  padding: 6px 14px;
  font-size: 13px;
  border-color: transparent;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.tag-row--center { justify-content: center; }

/* --- 卡片 --- */
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  box-shadow: var(--sh-card);
  transition: transform .25s var(--ease), box-shadow .25s var(--ease),
              border-color .25s var(--ease);
}

/* --- 图标底盘 --- */
.icon-box {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: var(--brand-tint);
  flex: 0 0 auto;
}
.icon-box svg { width: 28px; height: 28px; }
.icon-box--dark { background: rgba(143, 193, 185, .14); }

/* --- 网格 --- */
.grid { display: grid; gap: 32px; }

/* ============================================================== 顶部导航 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}

.nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
  min-height: 72px;
  padding: 10px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -.01em;
  white-space: nowrap;
}
.brand__logo {
  display: block;
  width: 38px;
  height: 36px;
  flex: 0 0 auto;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 34px;
}
.nav__link {
  position: relative;
  font-size: 15px;
  color: var(--ink-2);
  white-space: nowrap;
}
.nav__link:hover { color: var(--brand-deep); }
.nav__link.is-active {
  color: var(--brand-deep);
  font-weight: 600;
}
.nav__link.is-active::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -24px;
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: var(--brand);
  transform: translateX(-50%);
}

.nav__right {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* ================================================================== Hero */
.hero {
  position: relative;
  overflow: hidden;
  padding: 110px 0 96px;
  background:
    radial-gradient(900px 520px at 12% -10%, rgba(107, 168, 160, .16), transparent 62%),
    radial-gradient(760px 460px at 92% 8%, rgba(212, 165, 116, .14), transparent 64%),
    linear-gradient(170deg, #F8F6F2 0%, #EFF4F1 100%);
}

.hero__inner {
  display: flex;
  align-items: center;
  gap: 72px;
  text-align: left;
}

.hero__copy {
  flex: 1 1 0;
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 22px;
}

/* 右侧人物照片位 */
.hero__visual {
  flex: 0 0 440px;
  position: relative;
}

.hero__photo {
  position: relative;
  margin: 0;
  aspect-ratio: 460 / 540;
  border-radius: 28px;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  background: linear-gradient(170deg, #F8F5F0 0%, #E3EDE9 100%);
  box-shadow: 0 24px 48px rgba(35, 54, 51, .10);
}
.hero__photo > img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 25%;
}
.hero__photo-card {
  position: absolute;
  left: 22px;
  right: 22px;
  bottom: 22px;
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 12px 18px;
  border-radius: 16px;
  background: rgba(255, 255, 255, .93);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 8px 22px rgba(35, 54, 51, .14);
}
.hero__photo-card strong { font-size: 15px; font-weight: 600; color: #233633; }
.hero__photo-card span { font-size: 13px; color: var(--ink-3); }

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: var(--r-pill);
  background: rgba(255, 255, 255, .78);
  border: 1px solid rgba(107, 168, 160, .45);
  font-size: 14px;
  font-weight: 500;
  color: var(--brand-deep);
}
.hero__badge .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--brand);
  box-shadow: 0 0 0 4px rgba(107, 168, 160, .18);
}

.hero h1 {
  font-size: clamp(32px, 3.8vw, 52px);
  line-height: 1.32;
  font-weight: 700;
  letter-spacing: -.02em;
  max-width: 16em;
}

.hero h1 .nw,
.hero__sub .nw { white-space: nowrap; }

.hero__sub {
  font-size: clamp(15px, 1.5vw, 20px);
  color: var(--ink-2);
  max-width: 46em;
}

.hero__note {
  font-size: 16px;
  color: var(--ink-3);
}

/* =============================================================== 服务卡片 */
.svc-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px;
}

.svc-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 32px;
}
.svc-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--sh-card-h);
  border-color: var(--brand-tint-2);
}
.svc-card h3 {
  font-size: 20px;
  line-height: 1.45;
  font-weight: 600;
}
.svc-card p {
  font-size: 15px;
  line-height: 1.65;
  color: var(--ink-2);
}
.svc-card__more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: auto;
  padding-top: 4px;
  font-size: 14px;
  font-weight: 600;
  color: var(--brand-deep);
}
.svc-card__more svg { width: 16px; height: 16px; }
.svc-card:hover .svc-card__more { gap: 10px; }

/* 服务卡内的能力标签 */
.svc-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.svc-tags span {
  display: inline-flex;
  align-items: center;
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--brand-tint);
  font-size: 13px;
  line-height: 1.4;
  color: var(--brand-deep);
  white-space: nowrap;
}
@media (max-width: 640px) {
  .svc-tags span { font-size: 12px; padding: 4px 10px; }
}

/* 6 张服务卡，3 列 × 2 行，格子均匀无空位 */

/* =============================================================== 深色区块 */
.dark-section {
  background: var(--dark);
  color: #fff;
  padding: 88px 0;
}
.dark-section .eyebrow { color: var(--dark-ink-2); }
.dark-section .h-sec { color: #fff; }

.why-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px;
}
.why-card {
  padding: 32px;
  border-radius: var(--r-lg);
  background: var(--dark-2);
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.why-card svg { width: 32px; height: 32px; }
.why-card h3 {
  font-size: 20px;
  font-weight: 600;
  color: #fff;
}
.why-card p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--dark-ink);
}
.why-card__num {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--dark-ink-2);
}

/* =============================================================== 信任标签 */
.trust {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
  text-align: center;
}
.trust__title {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink-2);
}
.trust__note {
  font-size: 14px;
  color: var(--ink-3);
}

/* ================================================================ 底部CTA */
.cta-section { padding: 40px 0 96px; }

.cta-card {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  padding: 72px 80px;
  border-radius: var(--r-2xl);
  text-align: center;
  background: linear-gradient(135deg, #548B83 0%, #233633 100%);
}
.cta-card::after {
  content: "";
  position: absolute;
  inset: -40% -20% auto auto;
  width: 560px;
  height: 560px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, .14), transparent 68%);
  pointer-events: none;
}
.cta-card > * { position: relative; z-index: 1; }
.cta-card h2 {
  font-size: clamp(26px, 2.8vw, 34px);
  font-weight: 700;
  color: #fff;
  letter-spacing: -.01em;
}
.cta-card p {
  font-size: 17px;
  color: #D8E6E3;
  max-width: 46em;
}

/* ================================================================== 页脚 */
.site-footer {
  background: var(--dark-3);
  color: var(--dark-ink-3);
  padding: 56px 0 40px;
}
.footer__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.footer__brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: #fff;
}
/* 深色页脚：logo 使用浅色变体 logo-light.png，保持透明背景 */
.footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 28px;
}
.footer__nav a { font-size: 14px; color: var(--dark-ink-3); }
.footer__nav a:hover { color: var(--dark-ink-2); }

.footer__divider {
  height: 1px;
  background: var(--dark-2);
  margin: 32px 0;
}

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 13px;
}
.footer__bottom p { font-size: 13px; }

/* ============================================================== 子页头图 */
.page-head {
  padding: 76px 0 44px;
  background:
    radial-gradient(720px 420px at 50% -30%, rgba(107, 168, 160, .14), transparent 66%),
    var(--bg);
}

/* ============================================================== 服务详情 */
.svc-block {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 40px;
  padding: 40px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  box-shadow: var(--sh-card);
}

.svc-block__aside {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.svc-block__idx {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--brand);
}
.svc-block__title {
  font-size: 26px;
  line-height: 1.35;
  font-weight: 700;
  letter-spacing: -.01em;
}
.svc-block__fit {
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-2);
  padding-top: 4px;
  border-top: 1px solid var(--line);
}
.svc-block__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--r-md);
  background: var(--brand-tint);
  margin-bottom: 2px;
}
.svc-block__icon svg { width: 26px; height: 26px; }

.svc-block__body {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* 服务详情：主张句（与首页卡片一致，作为正文开场） */
.svc-block__lead {
  font-size: 16.5px;
  line-height: 1.72;
  color: var(--ink);
  padding-left: 16px;
  border-left: 3px solid var(--brand);
}

/* 服务详情：底部操作行（能力标签 + 咨询按钮） */
.svc-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px 24px;
  padding-top: 4px;
}

.quad-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}
.quad {
  padding: 20px;
  border-radius: var(--r-md);
  background: var(--bg);
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.quad__label {
  font-size: 13px;
  font-weight: 600;
  color: var(--brand-deep);
}
.quad p {
  font-size: 15px;
  line-height: 1.6;
  color: var(--ink);
}

.stack { display: flex; flex-direction: column; }
.stack--28 { gap: 28px; }
.stack--20 { gap: 20px; }
.stack--16 { gap: 16px; }
.stack--12 { gap: 12px; }
.stack--48 { gap: 48px; }

/* ================================================================ 案例卡 */
.case-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
}
.case-card {
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 32px;
}
.case-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--sh-card-h);
}
.case-card h3 {
  font-size: 20px;
  line-height: 1.4;
  font-weight: 700;
}
.case-card__label {
  font-size: 13px;
  font-weight: 600;
  color: var(--brand);
}
.case-card p {
  font-size: 15px;
  line-height: 1.65;
  color: var(--ink-2);
}
.case-card__effect {
  padding: 18px;
  border-radius: var(--r-md);
  background: var(--brand-tint);
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.case-card__effect .case-card__label { color: var(--brand-deep); }
.case-card__effect p {
  font-size: 15px;
  font-weight: 500;
  color: var(--dark);
}
.case-card__tech {
  font-size: 13px;
  color: var(--ink-3);
  padding-top: 4px;
  border-top: 1px solid var(--line);
}

/* --- 重点案例（大卡）：完整背景 / 方案 / 效果 --- */
.case-feature {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 40px;
}
.case-feature__head {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px 14px;
}
.case-feature__head h3 {
  font-size: 24px;
  line-height: 1.35;
  font-weight: 700;
  letter-spacing: -.01em;
}
.case-feature__lead {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--ink);
}
.case-feature .case-card__label {
  display: block;
  margin-bottom: 8px;
}
.sol-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}
.sol-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.sol {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px;
  border-radius: var(--r-md);
  background: var(--bg);
}
.sol__name {
  font-size: 14px;
  font-weight: 600;
  color: var(--brand-deep);
}
.sol p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink-2);
}
.case-effect-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.case-effect-list li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  font-weight: 500;
  line-height: 1.6;
  color: var(--dark);
}
.case-effect-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: .6em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--brand);
}

/* --- 更多典型场景 --- */
.case-more {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding-top: 8px;
}
.case-more__title {
  font-size: 20px;
  font-weight: 700;
}

/* ================================================================ 流程步骤 */
.steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  align-items: stretch;
}
.step {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 28px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
}
.step__num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--brand);
  color: #fff;
  font-size: 17px;
  font-weight: 700;
}
.step:last-child .step__num { background: var(--accent); }
.step h3 {
  font-size: 19px;
  line-height: 1.45;
  font-weight: 700;
}
.step p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink-2);
}
.step__arrow {
  position: absolute;
  top: 46px;
  right: -12px;
  z-index: 2;
  width: 20px;
  height: 20px;
  color: var(--brand);
  pointer-events: none;
}
.steps .step:last-child .step__arrow { display: none; }

.reassure {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  padding: 28px 40px;
  border-radius: var(--r-lg);
  background: var(--surface);
  border: 1px solid var(--line);
}
.reassure p {
  font-size: 17px;
  font-weight: 600;
}

/* ================================================================ 关于我 */
.about-grid {
  display: grid;
  grid-template-columns: 380px minmax(0, 1fr);
  gap: 64px;
  align-items: start;
}

.photo {
  position: relative;
  width: 100%;
  aspect-ratio: 380 / 440;
  border-radius: var(--r-xl);
  overflow: hidden;
  background: linear-gradient(160deg, var(--brand-tint) 0%, var(--brand-tint-2) 100%);
  border: 1px solid var(--line-strong);
}

/* 真实照片：放进 assets/photo.jpg 会自动盖住下方占位提示 */
.photo > img {
  position: absolute;
  inset: 0;
  z-index: 2;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 25%;
}

/* 无照片时的占位提示 */
.photo__ph {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: var(--brand-deep);
}
.photo__ph svg { width: 46px; height: 46px; opacity: .75; }
.photo__ph figcaption {
  font-size: 13px;
  font-weight: 500;
  opacity: .9;
}

.bio {
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink-2);
}

.quote-card {
  padding: 48px;
  border-radius: var(--r-xl);
  background: var(--dark);
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.quote-card .eyebrow { color: var(--dark-ink-2); }
.quote-card blockquote {
  margin: 0;
  font-size: clamp(22px, 2.4vw, 26px);
  line-height: 1.5;
  font-weight: 700;
  color: #fff;
}
.quote-card p {
  font-size: 15px;
  color: var(--dark-ink);
  max-width: 60em;
}

.tl {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.tl__item {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 24px 28px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
}
.tl__phase {
  flex: 0 0 96px;
  text-align: center;
  padding: 6px 0;
  border-radius: var(--r-pill);
  background: var(--brand-tint);
  font-size: 14px;
  font-weight: 600;
  color: var(--brand-deep);
}
.tl__body { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.tl__body h3 { font-size: 17px; font-weight: 600; }
.tl__body p { font-size: 14px; line-height: 1.65; color: var(--ink-2); }

/* ================================================================ 联系页 */
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 560px;
  gap: 64px;
  align-items: start;
}

.contact-row {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
}
.contact-row__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--brand-tint);
  flex: 0 0 auto;
}
.contact-row__icon svg { width: 22px; height: 22px; }
.contact-row dl { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.contact-row dt { font-size: 13px; color: var(--ink-3); }
.contact-row dd {
  font-size: 16px;
  font-weight: 600;
  word-break: break-all;
}
.contact-row dd a:hover { color: var(--brand-deep); }
.contact-row__hint { font-size: 12px; color: var(--ink-4); font-weight: 400; }

/* --- 微信二维码卡 --- */
.qr-card {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 18px 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
}
.qr-card__img {
  width: 132px;
  height: 132px;
  border-radius: 12px;
  background: #F1F4F2;
  object-fit: contain;
  flex: 0 0 auto;
}
/* 图片存在时隐藏占位；图片被 onerror 移除后占位自动出现 */
.qr-card__img + .qr-card__ph { display: none; }
.qr-card__ph {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 132px;
  height: 132px;
  border-radius: 12px;
  background: var(--brand-tint);
  border: 1px dashed var(--brand-tint-2);
  color: var(--brand-deep);
  font-size: 12px;
  line-height: 1.5;
  text-align: center;
  flex: 0 0 auto;
}
.qr-card__text { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.qr-card__text strong { font-size: 16px; font-weight: 600; }
.qr-card__text span { font-size: 13px; color: var(--ink-3); }

/* --- 表单 --- */
.form-card {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 40px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  box-shadow: var(--sh-card);
}
.form-card h2 { font-size: 22px; font-weight: 700; }
.form-card__sub { font-size: 14px; color: var(--ink-3); }

.field { display: flex; flex-direction: column; gap: 8px; }
.field > label {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
}
.field .req { color: var(--brand); }
.field input,
.field textarea {
  width: 100%;
  padding: 14px 16px;
  background: var(--bg);
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  font-size: 15px;
  line-height: 1.5;
  transition: border-color .2s var(--ease), background-color .2s var(--ease),
              box-shadow .2s var(--ease);
}
.field textarea { resize: vertical; min-height: 110px; }
.field input::placeholder,
.field textarea::placeholder { color: var(--ink-4); }
.field input:focus,
.field textarea:focus {
  outline: none;
  background: #fff;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(107, 168, 160, .15);
}

.form-note { font-size: 12px; color: var(--ink-4); line-height: 1.6; }

.form-alt {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--ink-3);
}
.form-alt a { color: var(--brand-deep); font-weight: 600; }

/* 表单提交成功提示 */
.form-ok {
  display: none;
  padding: 18px 20px;
  border-radius: var(--r-md);
  background: var(--brand-tint);
  border: 1px solid var(--brand-tint-2);
  font-size: 14px;
  line-height: 1.6;
  color: var(--brand-deep);
}
.form-ok.is-visible { display: block; }
.form-ok strong { display: block; font-weight: 600; margin-bottom: 12px; }
.form-ok__acts { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 12px; }
.form-ok__tip { display: block; font-size: 13px; color: var(--ink-3); line-height: 1.7; }
.form-ok__tip b { color: var(--brand-deep); font-weight: 600; word-break: break-all; }

.btn-mini {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 0 16px;
  border: 1px solid transparent;
  border-radius: 10px;
  background: var(--brand);
  color: #fff;
  font: inherit;
  font-size: 13.5px;
  font-weight: 500;
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  transition: opacity .18s ease, background .18s ease;
}
.btn-mini:hover { opacity: .9; }
.btn-mini--ghost {
  background: #fff;
  color: var(--brand-deep);
  border-color: var(--brand-tint-2);
}
.btn-mini--ghost:hover { background: var(--brand-tint); opacity: 1; }

/* ============================================================ 通用工具类 */
.mt-0  { margin-top: 0; }
.text-center { text-align: center; }
.mw-760 { max-width: 760px; margin-left: auto; margin-right: auto; }

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

/* —— 平板 —— */
@media (max-width: 1100px) {
  :root { --pad-x: 48px; }

  .svc-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  .case-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
  .step__arrow { display: none; }

  .about-grid { grid-template-columns: 300px minmax(0, 1fr); gap: 40px; }
  .contact-grid { grid-template-columns: minmax(0, 1fr); gap: 40px; }
  .contact-grid .form-card { max-width: 620px; }

  .hero__inner { gap: 48px; }
  .hero__visual { flex-basis: 380px; }

  .svc-block { grid-template-columns: minmax(0, 1fr); gap: 28px; }
}

/* —— 手机 —— */
@media (max-width: 860px) {
  :root { --pad-x: 24px; }

  /* 导航不折叠：窄屏时换行到第二行，始终可见 */
  .nav__links {
    order: 3;
    width: 100%;
    flex-wrap: wrap;
    gap: 4px 20px;
    padding-top: 8px;
    border-top: 1px solid var(--line);
  }
  .nav__link { font-size: 14px; }
  .nav__link.is-active::after { display: none; }

  .section { padding: 64px 0; }
  .section--tight { padding: 48px 0; }
  .dark-section { padding: 64px 0; }

  .hero { padding: 72px 0 64px; }
  .hero__inner {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 40px;
  }
  .hero__copy { align-items: center; }
  .hero__visual { flex: none; width: 100%; max-width: 400px; }
  .hero__stat { border-right: none; padding: 12px 0; flex-basis: 100%; }

  .h-sec { font-size: 28px; }
  .svc-card,
  .case-card { padding: 26px; }
  .why-card { padding: 26px; }

  .svc-grid,
  .case-grid,
  .why-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .quad-grid { grid-template-columns: minmax(0, 1fr); }
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }

  .about-grid { grid-template-columns: 300px minmax(0, 1fr); gap: 40px; }

  .cta-card { padding: 48px 28px; }
  .cta-section { padding: 24px 0 64px; }

  .quote-card { padding: 32px 28px; }

  .tl__item { flex-direction: column; align-items: flex-start; gap: 14px; padding: 22px; }
  .tl__phase { flex: 0 0 auto; }

  .page-head { padding: 52px 0 32px; }
  .svc-block { padding: 26px; }
  .svc-block__title { font-size: 22px; }
  .svc-block__lead { font-size: 15.5px; padding-left: 14px; }
  .svc-actions { justify-content: flex-start; }
  .case-feature { padding: 26px; }
  .case-feature__head h3 { font-size: 21px; }
  .sol-grid, .sol-grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  .form-card { padding: 26px; }
  .reassure { padding: 24px; }

  .footer__top { flex-direction: column; align-items: flex-start; }
  .footer__nav { gap: 18px 24px; }
  .footer__bottom { flex-direction: column; align-items: flex-start; gap: 8px; }
}

/* —— 窄手机：全部收成单列 —— */
@media (max-width: 720px) {
  .svc-grid,
  .case-grid,
  .why-grid,
  .quad-grid,
  .sol-grid,
  .sol-grid--3,
  .steps { grid-template-columns: minmax(0, 1fr); }

  .about-grid { grid-template-columns: minmax(0, 1fr); gap: 36px; }
  .photo { max-width: 340px; }
}

@media (max-width: 420px) {
  .btn-row { flex-direction: column; width: 100%; }
  .btn-row .btn { width: 100%; }
  .reassure .btn { width: auto; }

  .nav__right .btn { width: auto; padding: 9px 14px; font-size: 14px; }
  .nav__links { gap: 4px 14px; }
}

/* --------------------------------------------------------------- 打印 */
@media print {
  .site-header, .cta-section { display: none; }
  .dark-section, .quote-card, .cta-card { background: #fff !important; color: #000 !important; }
}