/* ===================================================
   HERO — 参考BOSS直聘：左文字+右视觉，超大背景
   =================================================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: #fff;
  position: relative;
  overflow: hidden;
  padding-top: 64px;
}
/* 背景装饰 */
.hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 900px 700px at 70% 50%, rgba(21, 78, 209, .06) 0%, transparent 70%),
    radial-gradient(circle 400px at 80% 20%, rgba(96, 165, 250, .08) 0%, transparent 60%);
}
/* 右侧大图形装饰 */
.hero__visual {
  position: absolute;
  right: 260px;
  top: 50%;
  transform: translateY(-50%);
  width: 680px;
  height: 680px;
  pointer-events: none;
}
.hero__circle-1 {
  position: absolute;
  width: 650px;
  height: 650px;
  right: -25px;
  top: 50%;
  transform: translateY(-50%);
  border-radius: 50%;
  background: radial-gradient(circle at 35% 40%, rgba(21, 78, 209, .1), rgba(17, 65, 176, .06) 50%, transparent 70%);
  border: 1px solid rgba(21, 78, 209, .08);
  animation: heroFloat 12s ease-in-out infinite;
}
.hero__circle-2 {
  position: absolute;
  width: 360px;
  height: 360px;
  right: 70px;
  top: 50%;
  transform: translateY(-50%);
  border-radius: 50%;
  background: radial-gradient(circle at 40% 40%, rgba(96, 165, 250, .15), transparent 65%);
  border: 1px dashed rgba(21, 78, 209, .12);
  animation: heroFloat 16s ease-in-out infinite reverse;
}
/* 动态浮动 mockup 卡片 */
.hero__card {
  position: absolute;
  background: #fff;
  border-radius: var(--r-lg);
  box-shadow: 0 8px 32px rgba(0, 0, 0, .12), 0 2px 8px rgba(21, 78, 209, .15);
  padding: var(--sp-4);
  border: 1px solid rgba(21, 78, 209, .1);
  animation: cardFloat 8s ease-in-out infinite;
}
/* 登录卡片 — 替换原三张浮动卡片 */
.hero__login-card {
  position: absolute;
  left: 395px;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 400px;
  background: #fff;
  border-radius: var(--r-xl);
  box-shadow: 0 12px 48px rgba(0, 0, 0, .15), 0 2px 8px rgba(21, 78, 209, .12);
  padding: var(--sp-8) var(--sp-6);
  pointer-events: auto;
  z-index: 5;
  animation: cardFloat 8s ease-in-out infinite;
}
.hero__login-logo {
  text-align: center;
  margin-bottom: var(--sp-4);
}
.hero__login-logo img {
  height: 40px;
  width: 160px;
  object-fit: contain;
  display: inline-block;
}
.hero__login-qr-display {
  text-align: center;
  padding: var(--sp-4) 0 var(--sp-2);
}
.hero__login-qr-display img {
  width: 180px;
  height: 180px;
  border-radius: var(--r-lg);
  box-shadow: 0 4px 16px rgba(0, 0, 0, .08);
}
.hero__login-qr-tip {
  margin-top: var(--sp-3);
  font-size: var(--text-xs);
  color: var(--gray-500);
}
.hero__login-title {
  font-size: var(--text-xl);
  font-weight: 800;
  color: var(--gray-900);
  text-align: center;
  margin-bottom: var(--sp-2);
}
.hero__login-subtitle {
  font-size: var(--text-xs);
  color: var(--gray-400);
  text-align: center;
  margin-bottom: var(--sp-6);
}
/* 身份切换 */
.hero__login-tabs {
  display: flex;
  background: var(--gray-100);
  border-radius: var(--r-full);
  padding: var(--sp-1);
  margin-bottom: var(--sp-5);
}
.hero__login-tab {
  flex: 1;
  padding: var(--sp-2) var(--sp-3);
  border-radius: var(--r-full);
  font-size: var(--text-sm);
  font-weight: 600;
  text-align: center;
  background: transparent;
  color: var(--gray-600);
  cursor: pointer;
  transition: all .2s var(--ease-out-quart);
}
.hero__login-tab.active {
  background: #fff;
  color: var(--blue-600);
  box-shadow: 0 2px 6px rgba(0, 0, 0, .06);
}
/* 表单 */
.hero__login-field {
  margin-bottom: var(--sp-4);
}
.hero__login-input {
  width: 100%;
  height: 46px;
  padding: 0 var(--sp-4);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--r-lg);
  font-size: var(--text-sm);
  font-family: var(--font);
  color: var(--gray-900);
  background: var(--gray-50);
  outline: none;
  transition: all .15s var(--ease-out-quart);
}
.hero__login-input:focus {
  border-color: var(--blue-400);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(21, 78, 209, .06);
}
.hero__login-input::placeholder {
  color: var(--gray-400);
}
.hero__login-sms-row {
  display: flex;
  gap: var(--sp-2);
}
.hero__login-sms-row .hero__login-input {
  flex: 1;
}
.hero__login-sms-btn {
  flex-shrink: 0;
  height: 46px;
  padding: 0 var(--sp-3);
  min-width: 100px;
  background: var(--blue-50);
  border-radius: var(--r-lg);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--blue-600);
  cursor: pointer;
  transition: all .15s;
  white-space: nowrap;
}
.hero__login-sms-btn:hover {
  background: var(--blue-100);
}
.hero__login-sms-btn:disabled {
  color: var(--gray-400);
  background: var(--gray-100);
  cursor: not-allowed;
}
.hero__login-submit {
  width: 100%;
  height: 46px;
  background: linear-gradient(135deg, var(--blue-600), var(--blue-500));
  border-radius: var(--r-lg);
  font-size: var(--text-base);
  font-weight: 700;
  color: #fff;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(21, 78, 209, .25);
  transition: all .15s var(--ease-out-quart);
  margin-bottom: var(--sp-4);
}
.hero__login-submit:hover {
  background: linear-gradient(135deg, var(--blue-700), var(--blue-600));
  transform: translateY(-1px);
  box-shadow: 0 6px 22px rgba(21, 78, 209, .35);
}
.hero__login-agreement {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-2);
  font-size: 11px;
  color: var(--gray-400);
  line-height: 1.5;
  margin-bottom: var(--sp-2);
}
.hero__login-agreement input {
  display: none;
}
.hero__login-agree-box {
  width: 14px;
  height: 14px;
  border: 1.5px solid var(--gray-300);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 1px;
  transition: all .15s;
}
.hero__login-agreement input:checked + .hero__login-agree-box {
  background: var(--blue-600);
  border-color: var(--blue-600);
}
.hero__login-agreement input:checked + .hero__login-agree-box::after {
  content: '';
  width: 4px;
  height: 7px;
  border: solid #fff;
  border-width: 0 1.5px 1.5px 0;
  transform: rotate(45deg) translateY(-1px);
}
.hero__login-agreement a {
  color: var(--blue-600);
  text-decoration: underline;
}
.hero__login-signup {
  text-align: center;
  font-size: var(--text-sm);
  margin-top: var(--sp-6);
}
.hero__login-signup a {
  color: var(--blue-600);
  font-weight: 600;
}
.hero__login-signup a:hover {
  text-decoration: underline;
}
/* Toast */
.login-toast {
  position: fixed;
  top: 80px;
  left: 50%;
  transform: translateX(-50%) translateY(-20px);
  background: var(--gray-900);
  color: #fff;
  padding: var(--sp-3) var(--sp-8);
  border-radius: var(--r-full);
  font-size: var(--text-sm);
  font-weight: 500;
  opacity: 0;
  pointer-events: none;
  z-index: 9999;
  transition: all .28s var(--ease-out-expo);
}
.login-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}
.login-toast.success {
  background: var(--accent-green);
}
.login-toast.error {
  background: #ef4444;
}

@keyframes heroFloat {
  0%, 100% { transform: translateY(-50%) }
  50%      { transform: translateY(calc(-50% - 18px)) }
}
@keyframes cardFloat {
  0%, 100% { transform: translate(-50%, -50%) }
  50%      { transform: translate(-50%, calc(-50% - 10px)) }
}

/* 左侧内容 */
.hero__content {
  position: relative;
  z-index: 1;
  max-width: 660px;
  padding: var(--sp-24) 0;
}
.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  background: rgba(21, 78, 209, .07);
  border: 1px solid rgba(21, 78, 209, .15);
  border-radius: var(--r-full);
  padding: var(--sp-2) var(--sp-4);
  margin-bottom: var(--sp-8);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--blue-600);
  animation: fadeUp 0.6s var(--ease-out-expo) forwards;
}
.hero__eyebrow-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--blue-500);
  animation: pulse 2s infinite;
}
.hero__headline {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 900;
  line-height: 1.1;
  color: var(--gray-900);
  letter-spacing: -0.03em;
  margin-bottom: var(--sp-6);
  animation: fadeUp 0.6s var(--ease-out-expo) 0.1s both;
}
.hero__headline em {
  font-style: normal;
  color: var(--blue-600);
}
.hero__headline-sub {
  display: block;
  font-size: 0.65em;
  color: var(--gray-500);
  font-weight: 500;
  letter-spacing: 0;
  margin-top: var(--sp-2);
}
.hero__desc {
  font-size: var(--text-xl);
  color: var(--gray-500);
  line-height: 1.75;
  max-width: 520px;
  margin-bottom: var(--sp-10);
  animation: fadeUp 0.6s var(--ease-out-expo) 0.2s both;
}
.hero__actions {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  flex-wrap: wrap;
  margin-bottom: var(--sp-12);
  animation: fadeUp 0.6s var(--ease-out-expo) 0.3s both;
}
.hero__btn-primary {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-4) var(--sp-8);
  border-radius: var(--r-full);
  background: linear-gradient(135deg, #faee21, #6fe600, #00ffff);
  color: #1a1a2e;
  font-size: var(--text-base);
  font-weight: 700;
  transition: all var(--dur-norm) var(--ease-out-expo);
  box-shadow: 0 4px 20px rgba(111, 230, 0, .3);
}
.hero__btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(111, 230, 0, .45);
}
.hero__btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-4) var(--sp-8);
  border-radius: var(--r-full);
  border: 1.5px solid var(--gray-200);
  color: var(--gray-700);
  font-size: var(--text-base);
  font-weight: 600;
  background: #fff;
  transition: all var(--dur-norm) var(--ease-out-expo);
}
.hero__btn-secondary:hover {
  border-color: var(--blue-300);
  color: var(--blue-600);
  background: var(--blue-50);
  transform: translateY(-1px);
}
/* 英雄数据带 */
.hero__stats {
  display: flex;
  align-items: center;
  gap: var(--sp-8);
  animation: fadeUp 0.6s var(--ease-out-expo) 0.4s both;
}
.hero__stat-item {
  text-align: left;
}
.hero__stat-num {
  font-size: var(--text-3xl);
  font-weight: 900;
  color: var(--blue-600);
  line-height: 1;
  letter-spacing: -0.03em;
}
.hero__stat-num sup {
  font-size: 0.55em;
  vertical-align: super;
  font-weight: 700;
}
.hero__stat-label {
  font-size: var(--text-xs);
  color: var(--gray-400);
  margin-top: 4px;
  font-weight: 500;
}
.hero__stat-divider {
  width: 1px;
  height: 40px;
  background: var(--gray-200);
}

/* ===================================================
   TAGLINE BAND — 横幅标语
   =================================================== */
.tagline-band {
  background: linear-gradient(135deg, #154ed1, #0e3490);
  padding: var(--sp-5) 0;
  overflow: hidden;
  margin-top: -60px;
  position: relative;
  z-index: 2;
}
.tagline-track {
  display: flex;
  justify-content: center;
  align-items: center;
  white-space: nowrap;
}
.tagline-track span {
  font-size: var(--text-sm);
  font-weight: 600;
  color: rgba(255, 255, 255, .85);
  letter-spacing: 0.05em;
  flex-shrink: 0;
}

/* ===================================================
   ABOUT — 关于牛匠：两栏+品牌诠释
   =================================================== */
.about {
  padding: var(--sp-24) 0;
  background: #fff;
}
.about__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-20);
  max-width: 780px;
  margin: 0 auto;
}
.about__label {
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--blue-600);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: var(--sp-4);
}
.about__title {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 900;
  color: var(--gray-900);
  line-height: 1.2;
  margin-bottom: var(--sp-6);
  letter-spacing: -0.025em;
}
.about__desc {
  font-size: var(--text-lg);
  color: var(--gray-500);
  line-height: 1.8;
  margin-bottom: var(--sp-8);
}
.about__chars {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-4);
  margin-bottom: var(--sp-8);
}
.about__char-card {
  padding: var(--sp-6);
  border-radius: var(--r-xl);
  border: 1.5px solid var(--gray-100);
  background: #fff;
  transition: all var(--dur-norm) var(--ease-out-expo);
  position: relative;
  overflow: hidden;
}
.about__char-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #154ed1, #0e3490);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-norm) var(--ease-out-expo);
}
.about__char-card:hover {
  border-color: var(--blue-200);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.about__char-card:hover::before {
  transform: scaleX(1);
}
.about__char-glyph {
  margin-bottom: var(--sp-2);
}
.about__char-name {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--gray-800);
  margin-bottom: var(--sp-2);
}
.about__char-sub {
  font-size: var(--text-sm);
  color: var(--gray-500);
  line-height: 1.7;
}

/* ===================================================
   SOLUTION — 解决方案：三支柱 + 痛点对照
   =================================================== */
.solution {
  padding: var(--sp-24) 0;
  background: var(--gray-50);
}
.section__header {
  text-align: center;
  margin-bottom: var(--sp-16);
}
.section__eyebrow {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--blue-600);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  display: inline-block;
  margin-bottom: var(--sp-2);
}
.section__title {
  font-size: clamp(1.875rem, 3.5vw, 2.5rem);
  font-weight: 900;
  color: var(--gray-900);
  line-height: 1.2;
  margin-bottom: var(--sp-4);
  letter-spacing: -0.025em;
}
.section__desc {
  font-size: var(--text-lg);
  color: var(--gray-500);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.75;
}

/* 痛点矩阵 */
.pain-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-4);
  margin-bottom: var(--sp-12);
}
.pain-card {
  background: #fff;
  border-radius: var(--r-xl);
  padding: var(--sp-6);
  border: 1px solid var(--gray-200);
  transition: all var(--dur-norm) var(--ease-out-expo);
  position: relative;
}
.pain-card:hover {
  border-color: var(--blue-200);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}
.pain-card__role {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  margin-bottom: var(--sp-5);
}
.pain-card__avatar {
  width: 44px;
  height: 44px;
  border-radius: var(--r-md);
  background: var(--blue-100);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}
.pain-card__name {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--gray-900);
}
.pain-card__type {
  font-size: var(--text-xs);
  color: var(--gray-400);
  font-weight: 500;
}
.pain-card__items {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}
.pain-card__item {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-2);
  font-size: var(--text-sm);
  color: var(--gray-600);
  line-height: 1.5;
}
.pain-card__item::before {
  content: '×';
  color: #ef4444;
  font-weight: 700;
  flex-shrink: 0;
  line-height: 1.5;
}

/* Pain CTA */
.pain-cta {
  text-align: center;
  margin-top: var(--sp-12);
}
.pain-cta__btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-4) var(--sp-10);
  border-radius: var(--r-full);
  background: linear-gradient(135deg, #faee21, #6fe600, #00ffff);
  color: #1a1a2e;
  font-size: var(--text-base);
  font-weight: 700;
  transition: all var(--dur-norm) var(--ease-out-expo);
  box-shadow: 0 4px 20px rgba(111, 230, 0, .3);
}
.pain-cta__btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(111, 230, 0, .45);
}

/* ===================================================
   CAPABILITIES — Bento网格，BOSS直聘风格信息密度
   =================================================== */
.caps {
  padding: var(--sp-24) 0;
  background: var(--gray-50);
}
.caps__bento {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: auto auto;
  gap: var(--sp-4);
}
.cap-card {
  background: #fff;
  border-radius: var(--r-xl);
  border: 1px solid var(--gray-200);
  padding: var(--sp-6);
  transition: all var(--dur-norm) var(--ease-out-expo);
  overflow: hidden;
  position: relative;
}
.cap-card:hover {
  border-color: var(--blue-200);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}
/* 数字角标 */
.cap-card__num {
  position: absolute;
  top: var(--sp-4);
  right: var(--sp-5);
  font-size: 3rem;
  font-weight: 900;
  color: var(--blue-50);
  line-height: 1;
  font-variant-numeric: tabular-nums;
  user-select: none;
}
.cap-card__icon {
  font-size: 1.75rem;
  margin-bottom: var(--sp-3);
}
.cap-card__title {
  font-size: var(--text-lg);
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: var(--sp-2);
}
.cap-card__desc {
  font-size: var(--text-sm);
  color: var(--gray-500);
  line-height: 1.7;
}
/* 首卡大号 */
.cap-card--featured {
  background: linear-gradient(135deg, #154ed1 0%, #0e3490 100%);
  border-color: transparent;
  color: #fff;
}
.cap-card--featured .cap-card__num {
  color: rgba(255, 255, 255, .1);
}
.cap-card--featured .cap-card__title {
  color: #fff;
}
.cap-card--featured .cap-card__desc {
  color: rgba(255, 255, 255, .75);
}
.cap-card--featured .cap-card__icon {
  font-size: 2.5rem;
}

/* ===================================================
   CASES — 客户案例：横向滑动
   =================================================== */
.cases {
  padding: var(--sp-24) 0;
  background: #fff;
}
.cases__slider {
  display: flex;
  gap: var(--sp-6);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  padding-bottom: var(--sp-4);
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.cases__slider::-webkit-scrollbar {
  display: none;
}
.case-card {
  flex: 0 0 360px;
  scroll-snap-align: start;
  background: #fff;
  border-radius: var(--r-2xl);
  border: 1px solid var(--gray-200);
  overflow: hidden;
  transition: all var(--dur-norm) var(--ease-out-expo);
}
.case-card:hover {
  border-color: var(--blue-200);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}
.case-card__top {
  background: linear-gradient(135deg, #154ed1, #0e3490);
  padding: var(--sp-6);
  color: #fff;
}
.case-card__type {
  font-size: var(--text-xs);
  font-weight: 600;
  color: rgba(255, 255, 255, .65);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--sp-2);
}
.case-card__name {
  font-size: var(--text-xl);
  font-weight: 800;
}
.case-card__body {
  padding: var(--sp-6);
}
.case-card__text {
  font-size: var(--text-sm);
  color: var(--gray-600);
  line-height: 1.75;
  margin-bottom: var(--sp-5);
}
.case-card__metrics {
  display: flex;
  gap: var(--sp-6);
}
.case-card__metric-val {
  font-size: var(--text-2xl);
  font-weight: 900;
  color: var(--blue-600);
  line-height: 1;
  letter-spacing: -0.02em;
}
.case-card__metric-label {
  font-size: var(--text-xs);
  color: var(--gray-400);
  margin-top: var(--sp-1);
  font-weight: 500;
}
/* 滑动指示点 */
.cases__dots {
  display: flex;
  justify-content: center;
  gap: var(--sp-2);
  margin-top: var(--sp-6);
}
.cases__dot {
  width: 8px;
  height: 8px;
  border-radius: var(--r-full);
  background: var(--gray-300);
  cursor: pointer;
  transition: all var(--dur-norm) var(--ease-out-expo);
}
.cases__dot.active {
  width: 24px;
  background: var(--blue-600);
}

/* ===================================================
   PARTNERS — 合作伙伴
   =================================================== */
.partners {
  padding: var(--sp-24) 0;
  background: var(--gray-50);
  border-top: 1px solid var(--gray-100);
  border-bottom: 1px solid var(--gray-100);
}
.partners__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: var(--sp-5);
  margin-top: var(--sp-10);
}
.partner-card {
  background: #fff;
  border-radius: var(--r-xl);
  padding: var(--sp-6);
  border: 1px solid var(--gray-200);
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 3/2;
  transition: all var(--dur-norm) var(--ease-out-expo);
}
.partner-card:hover {
  border-color: var(--blue-300);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}
.partner-card__img {
  max-width: 80%;
  max-height: 60%;
  object-fit: contain;
  display: block;
}
.partners__more {
  text-align: center;
  margin-top: var(--sp-6);
  font-size: var(--text-sm);
  color: var(--gray-400);
  letter-spacing: .05em;
}

/* ===================================================
   FOOTER
   =================================================== */
footer {
  background: var(--gray-900);
  color: rgba(255, 255, 255, .75);
  padding: var(--sp-20) 0 var(--sp-8);
}
.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--sp-12);
  margin-bottom: var(--sp-16);
}
.footer__brand-logo {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  margin-bottom: var(--sp-4);
}
.footer__brand-desc {
  font-size: var(--text-sm);
  line-height: 1.75;
  margin-bottom: var(--sp-6);
}
.footer__brand-tagline {
  font-size: var(--text-base);
  font-weight: 700;
  color: #fff;
  font-style: italic;
}
.footer__col-title {
  font-size: var(--text-sm);
  font-weight: 700;
  color: #fff;
  margin-bottom: var(--sp-4);
}
.footer__links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}
.footer__links li a {
  font-size: var(--text-sm);
  transition: color var(--dur-fast);
}
.footer__links li a:hover {
  color: #fff;
}
.footer__qrs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-6);
  margin-top: var(--sp-6);
}
.footer__qr {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-2);
}
.footer__qr-img {
  width: 120px;
  height: 120px;
  border-radius: var(--r-lg);
  background: #fff;
  padding: 6px;
  display: block;
  object-fit: contain;
}
.footer__qr-label {
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, .6);
  text-align: center;
  line-height: 1.4;
}
.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--sp-8);
  border-top: 1px solid rgba(255, 255, 255, .08);
  font-size: var(--text-sm);
}
.footer__icp a {
  color: rgba(255, 255, 255, .4);
  transition: color var(--dur-fast);
}
.footer__icp a:hover {
  color: rgba(255, 255, 255, .8);
}

/* ===================================================
   ANIMATIONS
   =================================================== */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px) }
  to   { opacity: 1; transform: translateY(0) }
}
@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1 }
  50%      { transform: scale(1.5); opacity: .6 }
}

/* ===================================================
   CHANNEL COMPARE — 渠道对比 (NEW)
   =================================================== */
.ch-compare {
  padding: var(--sp-24) 0;
  background: var(--gray-50);
}
.ch-compare__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-6);
}
.ch-compare__col {
  background: #fff;
  border-radius: var(--r-xl);
  overflow: hidden;
  border: 1px solid var(--gray-200);
  transition: all var(--dur-norm) var(--ease-out-expo);
}
.ch-compare__col:hover {
  border-color: var(--blue-200);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}
.ch-compare__col--highlight {
  border-color: var(--blue-200);
  box-shadow: 0 0 0 2px var(--blue-100);
}
.ch-compare__col-header {
  padding: var(--sp-6);
  text-align: center;
  border-bottom: 1px solid var(--gray-100);
}
.ch-compare__col--highlight .ch-compare__col-header {
  background: linear-gradient(135deg, #154ed1, #0e3490);
  color: #fff;
}
.ch-compare__col-name {
  font-size: var(--text-lg);
  font-weight: 800;
  margin-bottom: var(--sp-2);
}
.ch-compare__col-name sub {
  font-size: 0.55em;
  font-weight: 500;
  opacity: .7;
  vertical-align: baseline;
}
.ch-compare__col-body {
  padding: var(--sp-6);
}
.ch-compare__item {
  padding: var(--sp-3) 0;
  font-size: var(--text-sm);
  color: var(--gray-600);
  line-height: 1.6;
}
.ch-compare__item + .ch-compare__item {
  border-top: 1px solid var(--gray-100);
}
.ch-compare__item strong {
  color: var(--gray-900);
  display: block;
  margin-bottom: 2px;
}
.ch-compare__item .fail {
  color: #ef4444;
  font-size: var(--text-xs);
  font-weight: 600;
}
.ch-compare__item .pass {
  color: var(--accent-green);
  font-size: var(--text-xs);
  font-weight: 600;
}
.ch-compare__col--highlight .ch-compare__item {
  color: var(--gray-700);
}

/* ===================================================
   REASONS — 五大理由 (NEW)
   =================================================== */
.reasons {
  padding: var(--sp-24) 0;
  background: #fff;
}
.reasons__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: var(--sp-6);
}
.reason-card {
  text-align: center;
  padding: var(--sp-8) var(--sp-5);
  background: #fff;
  border-radius: var(--r-xl);
  border: 1px solid var(--gray-200);
  transition: all var(--dur-norm) var(--ease-out-expo);
  position: relative;
  overflow: hidden;
}
.reason-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #154ed1, #0e3490);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-norm) var(--ease-out-expo);
}
.reason-card:hover {
  border-color: var(--blue-200);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}
.reason-card:hover::before {
  transform: scaleX(1);
}
.reason-card__icon {
  font-size: 2.5rem;
  display: block;
  margin-bottom: var(--sp-4);
}
.reason-card__title {
  font-size: var(--text-lg);
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: var(--sp-3);
}
.reason-card__desc {
  font-size: var(--text-sm);
  color: var(--gray-500);
  line-height: 1.7;
}

/* ===================================================
   RESPONSIVE
   =================================================== */
@media (max-width: 1024px) {
  .about__grid {
    grid-template-columns: 1fr;
    gap: var(--sp-12);
  }
  .caps__bento {
    grid-template-columns: 1fr 1fr;
  }
  .footer__grid {
    grid-template-columns: 1fr 1fr 1fr;
  }
  .hero__visual, .hero__login-card {
    display: none;
  }
  .hero__content {
    max-width: 100%;
    padding: var(--sp-20) 0 var(--sp-12);
  }
  .pain-row {
    grid-template-columns: 1fr;
  }
  .ch-compare__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .ch-compare__col--highlight {
    grid-column: span 2;
  }
  .section {
    padding: var(--sp-16) 0;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--sp-5);
  }
  /* NAV */
  .nav__links, .nav__actions {
    display: none;
  }
  .nav__mobile-btn {
    display: block;
  }
  .nav__drawer-panel {
    width: 280px;
  }
  .nav__inner {
    padding: 0 var(--sp-5);
  }
  /* HERO */
  .hero {
    min-height: auto;
    padding-top: 64px;
  }
  .hero__headline {
    font-size: 2rem;
  }
  .hero__headline-sub {
    font-size: 0.75em;
  }
  .hero__content {
    padding: var(--sp-12) 0 var(--sp-8);
  }
  .hero__actions {
    flex-direction: column;
    align-items: stretch;
  }
  .hero__btn-primary, .hero__btn-secondary {
    width: 100%;
    justify-content: center;
    padding: var(--sp-4);
  }
  .hero__stats {
    gap: var(--sp-5);
    flex-wrap: wrap;
    justify-content: center;
  }
  .hero__stat-divider {
    display: none;
  }
  .hero__stat-num {
    font-size: var(--text-2xl);
  }
  /* TAGLINE */
  .tagline-band {
    padding: var(--sp-4) 0;
  }
  .tagline-track {
    gap: var(--sp-8);
    animation-duration: 15s;
  }
  .tagline-track span {
    font-size: var(--text-xs);
  }
  /* SECTION HEADERS */
  .section__title {
    font-size: 1.625rem;
  }
  .section__desc {
    font-size: var(--text-base);
  }
  .section__header {
    margin-bottom: var(--sp-8);
  }
  /* ABOUT */
  .about {
    padding: var(--sp-16) 0;
  }
  .about__title {
    font-size: 1.75rem;
  }
  .about__desc {
    font-size: var(--text-base);
  }
  .about__chars {
    grid-template-columns: 1fr;
  }
  /* SOLUTION */
  .solution {
    padding: var(--sp-16) 0;
  }
  .pain-row {
    grid-template-columns: 1fr;
    gap: var(--sp-3);
  }
  .pain-card {
    padding: var(--sp-5);
  }
  /* CAPABILITIES */
  .caps {
    padding: var(--sp-16) 0;
  }
  .caps__bento {
    grid-template-columns: 1fr;
  }
  /* CHANNEL COMPARE */
  .ch-compare {
    padding: var(--sp-16) 0;
  }
  .ch-compare__grid {
    grid-template-columns: 1fr;
  }
  .ch-compare__col--highlight {
    grid-column: span 1;
  }
  .ch-compare__col-header {
    padding: var(--sp-4);
  }
  .ch-compare__col-body {
    padding: var(--sp-4);
  }
  /* REASONS */
  .reasons {
    padding: var(--sp-16) 0;
  }
  .reasons__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-4);
  }
  .reason-card {
    padding: var(--sp-5) var(--sp-4);
  }
  .reason-card__icon {
    font-size: 2rem;
    margin-bottom: var(--sp-3);
  }
  .reason-card__title {
    font-size: var(--text-base);
  }
  /* CASES */
  .cases {
    padding: var(--sp-16) 0;
  }
  .case-card {
    flex: 0 0 280px;
  }
  .case-card__top {
    padding: var(--sp-5);
  }
  .case-card__body {
    padding: var(--sp-5);
  }
  .cases__slider {
    gap: var(--sp-4);
  }
  /* PARTNERS */
  .partners__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--sp-4);
  }
  .partner-card {
    padding: var(--sp-6) var(--sp-4);
  }
  /* FOOTER */
  footer {
    padding: var(--sp-12) 0 var(--sp-6);
  }
  .footer__grid {
    grid-template-columns: 1fr;
    gap: var(--sp-8);
  }
  .footer__bottom {
    flex-direction: column;
    gap: var(--sp-4);
    text-align: center;
    font-size: var(--text-xs);
  }
  .float-wechat {
    right: 16px;
    bottom: 80px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .sr, .sr-left, .sr-right, .sr-scale {
    opacity: 1 !important;
    transform: none !important;
  }
}

/* =====================================================
   悬浮企微按钮 + 二维码弹出层
   ===================================================== */
/* 悬浮按钮主体 */
.float-wechat {
  position: fixed;
  right: 108px;
  bottom: 91px;
  z-index: 900;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0;
}

/* 触发按钮 */
.float-wechat__btn {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, #1d4ed8, #2563eb);
  box-shadow: 0 4px 18px rgba(37, 99, 235, .45);
  border: none;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  transition: transform .2s ease, box-shadow .2s ease;
  position: relative;
  z-index: 1;
}
.float-wechat__btn:hover {
  transform: translateY(-3px) scale(1.06);
  box-shadow: 0 8px 28px rgba(37, 99, 235, .55);
}
.float-wechat__btn svg {
  display: block;
}
.float-wechat__btn-label {
  font-size: 9px;
  font-weight: 700;
  color: #fff;
  letter-spacing: .4px;
  line-height: 1;
}

/* 脉冲动画 */
.float-wechat__btn::before {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 2px solid rgba(37, 99, 235, .4);
  animation: wechat-pulse 2.2s ease-out infinite;
}
@keyframes wechat-pulse {
  0%   { opacity: 1; transform: scale(1) }
  70%  { opacity: 0; transform: scale(1.5) }
  100% { opacity: 0; transform: scale(1.5) }
}

/* 二维码弹出卡片 */
.float-wechat__popup {
  position: absolute;
  bottom: 68px;
  right: 0;
  width: 200px;
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, .18), 0 2px 8px rgba(37, 99, 235, .1);
  padding: 20px 16px 16px;
  text-align: center;
  pointer-events: none;
  opacity: 0;
  transform: translateY(10px) scale(.95);
  transform-origin: bottom right;
  transition: opacity .22s ease, transform .22s ease;
}
.float-wechat__popup.is-open {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

/* 弹窗内箭头 */
.float-wechat__popup::after {
  content: '';
  position: absolute;
  bottom: -8px;
  right: 20px;
  width: 16px;
  height: 16px;
  background: #fff;
  transform: rotate(45deg);
  border-radius: 3px;
  box-shadow: 3px 3px 8px rgba(0, 0, 0, .08);
}

.float-wechat__popup-title {
  font-size: 13px;
  font-weight: 700;
  color: #111827;
  margin-bottom: 4px;
}
.float-wechat__popup-sub {
  font-size: 11px;
  color: #6b7280;
  margin-bottom: 12px;
  line-height: 1.5;
}

/* 二维码区域 */
.float-wechat__qr {
  width: 148px;
  height: 148px;
  margin: 0 auto 10px;
  border-radius: 10px;
  background: linear-gradient(135deg, #f0f9ff, #eff6ff);
  border: 1.5px dashed #bfdbfe;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  overflow: hidden;
}
.float-wechat__qr img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 8px;
  display: block;
}
.float-wechat__qr-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: #93c5fd;
}
.float-wechat__qr-placeholder p {
  font-size: 10px;
  color: #9ca3af;
  line-height: 1.4;
}

.float-wechat__popup-hint {
  font-size: 11px;
  color: #6b7280;
  line-height: 1.5;
}
.float-wechat__popup-hint strong {
  color: #2563eb;
  font-weight: 600;
}