/* ============================================================
   merchant.css — 客户合作页面专用样式
   所有类名均以 mc- 前缀，避免与现有页面 CSS 冲突
   ============================================================ */

/* ---------- CSS Variables ---------- */
:root {
  --mc-red:        #c0392b;
  --mc-red-dark:   #992d22;
  --mc-red-light:  #e74c3c;
  --mc-red-bg:     #fff5f5;
  --mc-red-muted:  rgba(192,57,43,.08);
  --mc-text:       #1a1a1a;
  --mc-text-muted: #555;
  --mc-text-light: #888;
  --mc-border:     #e8e0df;
  --mc-bg-light:   #fafafa;
  --mc-bg-dark:    #1a0a09;
  --mc-white:      #ffffff;
  --mc-shadow:     0 4px 24px rgba(192,57,43,.12);
  --mc-radius:     12px;
  --mc-radius-lg:  20px;
  --mc-font:       'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
  --mc-transition: 0.25s ease;
  --mc-max-w:      1200px;
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: var(--mc-font);
  color: var(--mc-text);
  background: var(--mc-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

/* ---------- Container ---------- */
.mc-container {
  max-width: var(--mc-max-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Buttons ---------- */
.mc-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-family: var(--mc-font);
  font-size: 14px;
  font-weight: 600;
  border-radius: 6px;
  cursor: pointer;
  transition: all var(--mc-transition);
  border: 1.5px solid transparent;
  white-space: nowrap;
  padding: 9px 20px;
  line-height: 1;
}
.mc-btn--primary {
  background: var(--mc-red);
  color: var(--mc-white);
  border-color: var(--mc-red);
}
.mc-btn--primary:hover {
  background: var(--mc-red-dark);
  border-color: var(--mc-red-dark);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(192,57,43,.35);
}
.mc-btn--ghost {
  background: transparent;
  color: var(--mc-text);
  border-color: var(--mc-border);
}
.mc-btn--ghost:hover {
  border-color: var(--mc-red);
  color: var(--mc-red);
}
.mc-btn--outline {
  background: transparent;
  color: var(--mc-white);
  border-color: rgba(255,255,255,.6);
}
.mc-btn--outline:hover {
  background: rgba(255,255,255,.15);
  border-color: var(--mc-white);
}
.mc-btn--lg { padding: 14px 32px; font-size: 15px; border-radius: 8px; }
.mc-btn--sm { padding: 7px 14px; font-size: 13px; }
.mc-btn--submit {
  width: 100%;
  padding: 16px;
  font-size: 16px;
  border-radius: 8px;
  letter-spacing: .5px;
}

/* ---------- Header ---------- */
.mc-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(26,10,9,.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255,255,255,.06);
  transition: background var(--mc-transition), box-shadow var(--mc-transition);
}
.mc-header--scrolled {
  background: rgba(26,10,9,.98);
  box-shadow: 0 2px 20px rgba(0,0,0,.3);
}
.mc-header__inner {
  display: flex;
  align-items: center;
  gap: 24px;
  height: 68px;
}
.mc-header__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.mc-header__logo {
  height: 36px;
  width: auto;
}
.mc-header__brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}
.mc-header__brand-cn {
  font-size: 15px;
  font-weight: 700;
  color: var(--mc-white);
  letter-spacing: .5px;
}
.mc-header__brand-en {
  font-size: 10px;
  color: rgba(255,255,255,.45);
  letter-spacing: 1px;
  text-transform: uppercase;
}
.mc-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
  justify-content: center;
}
.mc-nav__link {
  font-size: 14px;
  color: rgba(255,255,255,.75);
  padding: 6px 10px;
  border-radius: 6px;
  transition: color var(--mc-transition), background var(--mc-transition);
  white-space: nowrap;
}
.mc-nav__link:hover,
.mc-nav__link--active {
  color: var(--mc-white);
  background: rgba(192,57,43,.25);
}
.mc-nav__link--active {
  color: #ff8080;
}
.mc-header__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.mc-header__actions .mc-btn--ghost {
  color: rgba(255,255,255,.75);
  border-color: rgba(255,255,255,.2);
}
.mc-header__actions .mc-btn--ghost:hover {
  color: var(--mc-white);
  border-color: rgba(255,255,255,.5);
}

/* Hamburger */
.mc-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-left: auto;
}
.mc-hamburger span {
  display: block;
  height: 2px;
  background: var(--mc-white);
  border-radius: 2px;
  transition: all 0.3s ease;
  transform-origin: center;
}
.mc-hamburger--open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.mc-hamburger--open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.mc-hamburger--open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Drawer */
.mc-drawer {
  display: none;
  flex-direction: column;
  background: rgba(26,10,9,.98);
  border-top: 1px solid rgba(255,255,255,.08);
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.35s ease;
}
.mc-drawer--open { max-height: 500px; }
.mc-drawer__link {
  display: block;
  padding: 13px 20px;
  font-size: 15px;
  color: rgba(255,255,255,.75);
  border-bottom: 1px solid rgba(255,255,255,.05);
  transition: color var(--mc-transition), background var(--mc-transition);
}
.mc-drawer__link:hover,
.mc-drawer__link--active {
  color: var(--mc-white);
  background: rgba(192,57,43,.2);
}
.mc-drawer__actions {
  display: flex;
  gap: 10px;
  padding: 14px 20px 18px;
}

/* ---------- Banner ---------- */
.mc-banner {
  position: relative;
  min-height: 620px;
  display: flex;
  align-items: center;
  padding-top: 88px;
  overflow: hidden;
  background:
    radial-gradient(circle at 14% 30%, rgba(255,255,255,.1) 0, rgba(255,255,255,0) 28%),
    radial-gradient(circle at 82% 18%, rgba(255,255,255,.08) 0, rgba(255,255,255,0) 18%),
    linear-gradient(135deg, #180807 0%, #4c120d 46%, #7b1b12 100%);
}
.mc-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(15,6,5,.84) 0%, rgba(15,6,5,.52) 42%, rgba(15,6,5,.18) 100%),
    linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: auto, 32px 32px, 32px 32px;
  pointer-events: none;
}
.mc-banner::after {
  content: '';
  position: absolute;
  right: -80px;
  bottom: -90px;
  width: 520px;
  height: 520px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,132,96,.24) 0%, rgba(255,132,96,.08) 38%, transparent 70%);
  pointer-events: none;
}
.mc-banner__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 74% 42%, rgba(255,255,255,.12) 0 2px, transparent 3px),
    radial-gradient(circle at 79% 36%, rgba(255,255,255,.16) 0 2px, transparent 3px),
    radial-gradient(circle at 84% 50%, rgba(255,255,255,.16) 0 2px, transparent 3px),
    radial-gradient(circle at 70% 58%, rgba(255,255,255,.12) 0 2px, transparent 3px),
    linear-gradient(130deg, rgba(255,255,255,.06), rgba(255,255,255,0) 36%),
    url('https://images.unsplash.com/photo-1516321318423-f06f85e504b3?auto=format&fit=crop&w=1800&q=80') center right/cover no-repeat;
  mix-blend-mode: screen;
  opacity: .22;
  transform: scale(1.05);
}
.mc-banner__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(24,8,7,.84) 0%, rgba(24,8,7,.46) 40%, rgba(24,8,7,.08) 100%);
}
.mc-banner__content {
  position: relative;
  z-index: 1;
  width: 100%;
  padding-top: 42px;
  padding-bottom: 74px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  text-align: left;
}
.mc-banner__sub {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  color: rgba(255,199,182,.96);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 18px;
}
.mc-banner__sub::before {
  content: '';
  display: block;
  width: 26px;
  height: 2px;
  background: linear-gradient(90deg, #ffb299, var(--mc-red-light));
}
.mc-banner__title {
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 800;
  color: var(--mc-white);
  line-height: 1.14;
  margin-bottom: 18px;
  letter-spacing: -.8px;
  max-width: 720px;
}
.mc-banner__desc {
  font-size: 16px;
  color: rgba(255,255,255,.76);
  max-width: 620px;
  line-height: 1.9;
  margin-bottom: 34px;
}
.mc-banner__btns {
  display: flex;
  justify-content: flex-start;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 42px;
}
.mc-banner__stats {
  display: flex;
  align-items: stretch;
  justify-content: flex-start;
  gap: 0;
  flex-wrap: wrap;
  padding: 18px 0 0;
}
.mc-banner__stat {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 0 28px;
}
.mc-banner__stat:first-child { padding-left: 0; }
.mc-banner__stat-num {
  font-size: 36px;
  font-weight: 800;
  color: var(--mc-white);
  line-height: 1;
}
.mc-banner__stat-num em {
  font-style: normal;
  font-size: 22px;
  color: #ff9b81;
}
.mc-banner__stat-label {
  font-size: 13px;
  color: rgba(255,255,255,.58);
  margin-top: 7px;
}
.mc-banner__stat-divider {
  width: 1px;
  height: 44px;
  background: rgba(255,255,255,.15);
}

/* ---------- Sections ---------- */
.mc-section {
  padding: 80px 0;
}
.mc-section--light { background: var(--mc-bg-light); }
.mc-section--dark {
  background: var(--mc-bg-dark);
  position: relative;
  overflow: hidden;
}
.mc-section--dark::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 60% at 80% 50%, rgba(192,57,43,.18) 0%, transparent 70%);
  pointer-events: none;
}

/* Section Header */
.mc-section-header {
  text-align: center;
  margin-bottom: 56px;
}
.mc-section-header--light { color: var(--mc-white); }
.mc-section-header__tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--mc-red);
  background: var(--mc-red-muted);
  border: 1px solid rgba(192,57,43,.2);
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 16px;
}
.mc-section-header__tag--light {
  color: rgba(255,160,140,.9);
  background: rgba(192,57,43,.2);
  border-color: rgba(192,57,43,.3);
}
.mc-section-header__title {
  font-size: clamp(22px, 4vw, 34px);
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 14px;
  letter-spacing: -.3px;
}
.mc-section-header--light .mc-section-header__title { color: var(--mc-white); }
.mc-section-header__desc {
  font-size: 15px;
  color: var(--mc-text-muted);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.8;
}
.mc-section-header--light .mc-section-header__desc { color: rgba(255,255,255,.55); }

/* ---------- Product Cards ---------- */
.mc-products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.mc-product-card {
  background: var(--mc-white);
  border: 1px solid var(--mc-border);
  border-radius: var(--mc-radius-lg);
  padding: 36px 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  position: relative;
  transition: box-shadow var(--mc-transition), transform var(--mc-transition), border-color var(--mc-transition);
  overflow: hidden;
}
.mc-product-card:hover {
  box-shadow: var(--mc-shadow);
  border-color: rgba(192,57,43,.25);
  transform: translateY(-4px);
}
.mc-product-card--featured {
  background: linear-gradient(140deg, var(--mc-red) 0%, var(--mc-red-dark) 100%);
  border-color: transparent;
  color: var(--mc-white);
}
.mc-product-card--featured:hover {
  box-shadow: 0 16px 40px rgba(192,57,43,.4);
  border-color: transparent;
}
.mc-product-card__badge {
  position: absolute;
  top: 20px; right: 20px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--mc-red);
  background: var(--mc-white);
  padding: 3px 10px;
  border-radius: 20px;
}
.mc-product-card__icon-wrap {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.mc-product-card__icon-wrap--1 { background: rgba(192,57,43,.1); color: var(--mc-red); }
.mc-product-card__icon-wrap--2 { background: rgba(255,255,255,.2); color: var(--mc-white); }
.mc-product-card__icon-wrap--3 { background: rgba(192,57,43,.1); color: var(--mc-red); }
.mc-product-card__icon { width: 28px; height: 28px; }
.mc-product-card__title {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.3;
}
.mc-product-card__desc {
  font-size: 14px;
  line-height: 1.75;
  color: var(--mc-text-muted);
  flex: 1;
}
.mc-product-card--featured .mc-product-card__desc { color: rgba(255,255,255,.75); }
.mc-product-card__features {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.mc-product-card__features li {
  font-size: 13px;
  color: var(--mc-text-muted);
  padding-left: 18px;
  position: relative;
}
.mc-product-card__features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--mc-red);
  font-weight: 700;
}
.mc-product-card--featured .mc-product-card__features li { color: rgba(255,255,255,.8); }
.mc-product-card--featured .mc-product-card__features li::before { color: rgba(255,255,255,.9); }
.mc-product-card__footer { margin-top: auto; padding-top: 8px; }
.mc-product-card__cta {
  font-size: 14px;
  font-weight: 700;
  color: var(--mc-red);
  transition: gap var(--mc-transition), color var(--mc-transition);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.mc-product-card__cta:hover { color: var(--mc-red-dark); gap: 8px; }
.mc-product-card__cta--white { color: rgba(255,255,255,.9); }
.mc-product-card__cta--white:hover { color: var(--mc-white); }

/* ---------- Advantages ---------- */
.mc-advantages {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  position: relative;
  z-index: 1;
}
.mc-advantage {
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--mc-radius);
  padding: 28px 24px;
  text-align: center;
  transition: background var(--mc-transition), border-color var(--mc-transition), transform var(--mc-transition);
}
.mc-advantage:hover {
  background: rgba(255,255,255,.07);
  border-color: rgba(192,57,43,.3);
  transform: translateY(-4px);
}
.mc-advantage__icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.mc-advantage__icon svg { width: 40px; height: 40px; }
.mc-advantage__title {
  font-size: 17px;
  font-weight: 700;
  color: var(--mc-white);
  margin-bottom: 10px;
}
.mc-advantage__desc {
  font-size: 13px;
  color: rgba(255,255,255,.5);
  line-height: 1.7;
}

/* ---------- Steps ---------- */
.mc-steps {
  display: flex;
  align-items: center;
  gap: 0;
  flex-wrap: wrap;
  justify-content: center;
}
.mc-step {
  flex: 1;
  min-width: 180px;
  max-width: 240px;
  background: var(--mc-white);
  border: 1px solid var(--mc-border);
  border-radius: var(--mc-radius);
  padding: 28px 20px;
  text-align: center;
  transition: box-shadow var(--mc-transition), border-color var(--mc-transition), transform var(--mc-transition);
}
.mc-step:hover {
  box-shadow: var(--mc-shadow);
  border-color: rgba(192,57,43,.25);
  transform: translateY(-3px);
}
.mc-step__num {
  font-size: 38px;
  font-weight: 900;
  color: var(--mc-red-muted);
  -webkit-text-stroke: 2px rgba(192,57,43,.2);
  color: transparent;
  line-height: 1;
  margin-bottom: 12px;
  font-variant-numeric: tabular-nums;
}
.mc-step__title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--mc-text);
}
.mc-step__desc {
  font-size: 13px;
  color: var(--mc-text-muted);
  line-height: 1.65;
}
.mc-step__arrow {
  font-size: 24px;
  color: var(--mc-red-light);
  padding: 0 8px;
  flex-shrink: 0;
  opacity: .5;
}

/* ---------- 应用端ly Section ---------- */
.mc-apply {
  background: linear-gradient(135deg, #1a0a09 0%, #2d0d0a 50%, #1a0a09 100%);
  position: relative;
  overflow: hidden;
}
.mc-apply::before {
  content: '';
  position: absolute;
  top: -100px; right: -100px;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(192,57,43,.2) 0%, transparent 65%);
  pointer-events: none;
}
.mc-apply__wrap {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 56px;
  align-items: start;
  position: relative;
  z-index: 1;
}
.mc-apply__intro {
  padding-top: 8px;
}
.mc-apply__title {
  font-size: 32px;
  font-weight: 800;
  color: var(--mc-white);
  margin: 12px 0 16px;
  line-height: 1.2;
}
.mc-apply__desc {
  font-size: 15px;
  color: rgba(255,255,255,.6);
  line-height: 1.8;
  margin-bottom: 28px;
}
.mc-apply__promises {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 36px;
}
.mc-apply__promise {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: rgba(255,255,255,.8);
}
.mc-apply__promise svg { width: 20px; height: 20px; flex-shrink: 0; }
.mc-apply__hotline {
  display: flex;
  align-items: center;
  gap: 14px;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--mc-radius);
  padding: 16px 20px;
}
.mc-apply__hotline svg { width: 28px; height: 28px; flex-shrink: 0; }
.mc-apply__hotline > div { display: flex; flex-direction: column; gap: 2px; }
.mc-apply__hotline-label {
  font-size: 12px;
  color: rgba(255,255,255,.45);
}
.mc-apply__hotline-num {
  font-size: 20px;
  font-weight: 700;
  color: var(--mc-white);
  letter-spacing: 1px;
}

/* Form */
.mc-apply__form-wrap {
  background: var(--mc-white);
  border-radius: var(--mc-radius-lg);
  padding: 36px 32px;
}
.mc-form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}
.mc-form__row--full { grid-template-columns: 1fr; }
.mc-form__field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.mc-form__field--required .mc-form__label::after {
  content: ' *';
  color: var(--mc-red);
}
.mc-form__label {
  font-size: 13px;
  font-weight: 600;
  color: var(--mc-text);
}
.mc-form__input {
  font-family: var(--mc-font);
  font-size: 14px;
  color: var(--mc-text);
  background: var(--mc-bg-light);
  border: 1.5px solid var(--mc-border);
  border-radius: 8px;
  padding: 11px 14px;
  outline: none;
  transition: border-color var(--mc-transition), box-shadow var(--mc-transition);
  width: 100%;
  appearance: none;
  -webkit-appearance: none;
}
.mc-form__input:focus {
  border-color: var(--mc-red);
  box-shadow: 0 0 0 3px rgba(192,57,43,.1);
  background: var(--mc-white);
}
.mc-form__select {
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23888' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 12px;
  padding-right: 32px;
  cursor: pointer;
}
.mc-form__textarea {
  resize: vertical;
  min-height: 96px;
}
.mc-form__checkgroup {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.mc-form__check {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--mc-text-muted);
  cursor: pointer;
  padding: 7px 14px;
  border: 1.5px solid var(--mc-border);
  border-radius: 20px;
  transition: all var(--mc-transition);
}
.mc-form__check:hover {
  border-color: var(--mc-red);
  color: var(--mc-red);
}
.mc-form__check input[type="checkbox"] {
  width: 15px; height: 15px;
  accent-color: var(--mc-red);
  cursor: pointer;
}
.mc-form__agree {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 13px;
  color: var(--mc-text-muted);
  cursor: pointer;
  line-height: 1.6;
}
.mc-form__agree input[type="checkbox"] {
  width: 16px; height: 16px;
  accent-color: var(--mc-red);
  cursor: pointer;
  flex-shrink: 0;
  margin-top: 2px;
}
.mc-form__agree a {
  color: var(--mc-red);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* Success State */
.mc-apply__success {
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 40px 20px;
  gap: 16px;
}
.mc-apply__success svg { width: 80px; height: 80px; }
.mc-apply__success h3 { font-size: 22px; font-weight: 700; color: var(--mc-text); }
.mc-apply__success p { font-size: 14px; color: var(--mc-text-muted); line-height: 1.7; }

/* ---------- Footer ---------- */
.mc-footer {
  background: #0f0605;
  color: rgba(255,255,255,.6);
  padding: 56px 0 0;
}
.mc-footer__main {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,.07);
}
.mc-footer__logo {
  height: 40px;
  width: auto;
  margin-bottom: 12px;
}
.mc-footer__brand-name {
  font-size: 17px;
  font-weight: 700;
  color: var(--mc-white);
  margin-bottom: 10px;
}
.mc-footer__brand-desc {
  font-size: 13px;
  line-height: 1.75;
  color: rgba(255,255,255,.45);
  max-width: 280px;
}
.mc-footer__col-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--mc-white);
  margin-bottom: 16px;
  letter-spacing: .3px;
}
.mc-footer__link {
  display: block;
  font-size: 13px;
  color: rgba(255,255,255,.45);
  padding: 4px 0;
  transition: color var(--mc-transition);
}
.mc-footer__link:hover { color: var(--mc-red-light); }
.mc-footer__contact {
  font-size: 13px;
  color: rgba(255,255,255,.45);
  margin-bottom: 6px;
  line-height: 1.6;
}
.mc-footer__qr {
  width: 80px;
  height: 80px;
  border-radius: 6px;
  margin-top: 12px;
  opacity: .7;
}
.mc-footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 20px 0;
  font-size: 12px;
  color: rgba(255,255,255,.3);
}
.mc-footer__bottom-links {
  display: flex;
  align-items: center;
  gap: 8px;
}
.mc-footer__bottom-links a {
  color: rgba(255,255,255,.3);
  transition: color var(--mc-transition);
}
.mc-footer__bottom-links a:hover { color: rgba(255,255,255,.6); }
.mc-footer__bottom-links span { color: rgba(255,255,255,.15); }

/* ============================================================
   MOBILE RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .mc-nav { display: none; }
  .mc-header__actions { display: none; }
  .mc-hamburger { display: flex; }
  .mc-drawer { display: flex; }

  .mc-advantages {
    grid-template-columns: repeat(2, 1fr);
  }
  .mc-footer__main {
    grid-template-columns: 1fr 1fr;
  }
  .mc-apply__wrap {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .mc-apply__intro {
    max-width: 100%;
  }
}

@media (max-width: 768px) {
  .mc-section { padding: 56px 0; }

  .mc-banner { min-height: auto; }
  .mc-banner__content { padding-top: 40px; padding-bottom: 48px; }
  .mc-banner__btns { gap: 10px; }
  .mc-banner__stats { gap: 0; }
  .mc-banner__stat { padding: 0 16px; }
  .mc-banner__stat-num { font-size: 28px; }
  .mc-banner__stat-num em { font-size: 17px; }

  .mc-products-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .mc-products-grid .mc-product-card--featured { order: -1; }

  .mc-advantages { grid-template-columns: 1fr 1fr; gap: 12px; }
  .mc-advantage { padding: 20px 16px; }

  .mc-steps {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }
  .mc-step { max-width: 100%; }
  .mc-step__arrow {
    transform: rotate(90deg);
    text-align: center;
    padding: 0;
    font-size: 20px;
  }

  .mc-apply__form-wrap { padding: 24px 18px; }
  .mc-form__row { grid-template-columns: 1fr; gap: 12px; }
  .mc-form__row--full { grid-template-columns: 1fr; }

  .mc-footer__main { grid-template-columns: 1fr; gap: 28px; }
  .mc-footer__bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
}

@media (max-width: 480px) {
  .mc-container { padding: 0 16px; }

  .mc-header__brand-text { display: none; }
  .mc-header__inner { height: 58px; }

  .mc-banner__title { font-size: 26px; }
  .mc-banner__desc { font-size: 14px; }
  .mc-banner__btns .mc-btn--outline { display: none; }

  .mc-advantages { grid-template-columns: 1fr; }

  .mc-section-header { margin-bottom: 36px; }
  .mc-section-header__title { font-size: 22px; }
}

/* ============================================================
   技术产品模块  mc-prd-*
   ============================================================ */

.mc-prd-section {
  background: #fff;
}

/* 整体网格：左侧介绍 + 右侧卡片 */
.mc-prd-grid {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 24px;
  align-items: stretch;
}

/* ---------- 左侧介绍卡片 ---------- */
.mc-prd-intro {
  position: relative;
  border-radius: var(--mc-radius-lg);
  overflow: hidden;
  min-height: 340px;
}
.mc-prd-intro__bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(155deg, var(--mc-red) 0%, var(--mc-red-dark) 60%, #6b0f08 100%);
}
/* subtle noise-like radial glow */
.mc-prd-intro__bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 20% 80%, rgba(255,255,255,.08) 0%, transparent 65%);
}
.mc-prd-intro__body {
  position: relative;
  z-index: 1;
  padding: 32px 24px 28px;
  display: flex;
  flex-direction: column;
  height: 100%;
}
.mc-prd-intro__logo {
  width: 44px;
  height: 44px;
  margin-bottom: 16px;
  flex-shrink: 0;
}
.mc-prd-intro__logo svg { width: 44px; height: 44px; }
.mc-prd-intro__title {
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 10px;
  letter-spacing: .3px;
}
.mc-prd-intro__divider {
  width: 28px;
  height: 3px;
  background: rgba(255,200,180,.5);
  border-radius: 2px;
  margin-bottom: 18px;
}
.mc-prd-intro__list {
  display: flex;
  flex-direction: column;
  gap: 9px;
  flex: 1;
}
.mc-prd-intro__list li {
  font-size: 13px;
  color: rgba(255,255,255,.8);
  padding-left: 16px;
  position: relative;
  line-height: 1.5;
}
.mc-prd-intro__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 7px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: rgba(255,200,180,.7);
}
.mc-prd-intro__cta {
  display: inline-block;
  margin-top: 24px;
  padding: 9px 0;
  font-size: 13px;
  font-weight: 700;
  color: rgba(255,255,255,.9);
  border-top: 1px solid rgba(255,255,255,.2);
  transition: color var(--mc-transition);
  letter-spacing: .3px;
}
.mc-prd-intro__cta:hover { color: #fff; }
.mc-prd-intro__cta::after {
  content: ' →';
  font-size: 12px;
}

/* ---------- 右侧产品卡片网格 ---------- */
.mc-prd-cards {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}

/* 单张卡片 */
.mc-prd-card {
  position: relative;
  border-radius: var(--mc-radius);
  border: 1.5px solid var(--mc-border);
  background: #fff;
  overflow: hidden;
  cursor: pointer;
  outline: none;
  transition: border-color .28s, box-shadow .28s, transform .28s;
  /* 固定高度保证对齐 */
  min-height: 200px;
}
.mc-prd-card:hover,
.mc-prd-card:focus-visible {
  border-color: rgba(192,57,43,.35);
  box-shadow: 0 8px 32px rgba(192,57,43,.14);
  transform: translateY(-5px);
}

/* Front face */
.mc-prd-card__front {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 20px 12px;
  transition: opacity .28s, transform .28s;
}
.mc-prd-card:hover .mc-prd-card__front,
.mc-prd-card:focus-visible .mc-prd-card__front {
  opacity: 0;
  transform: translateY(-8px);
}

.mc-prd-card__icon-wrap {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform .3s;
}
.mc-prd-card__icon-wrap svg { width: 44px; height: 44px; }
.mc-prd-card:hover .mc-prd-card__icon-wrap { transform: scale(1.06); }

.mc-prd-card__name {
  font-size: 15px;
  font-weight: 700;
  color: var(--mc-text);
  text-align: center;
}
.mc-prd-card__sub {
  font-size: 11px;
  color: var(--mc-text-light);
  text-align: center;
}
.mc-prd-card__line {
  width: 24px;
  height: 2.5px;
  background: var(--lc, var(--mc-red));
  border-radius: 2px;
  opacity: .5;
  margin-top: 2px;
  transition: width .3s, opacity .3s;
}
.mc-prd-card:hover .mc-prd-card__line {
  width: 36px;
  opacity: .8;
}

/* Hover face */
.mc-prd-card__hover {
  position: absolute;
  inset: 0;
  background: linear-gradient(155deg, #fff 0%, var(--mc-red-bg) 100%);
  padding: 20px 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity .28s, transform .28s;
  pointer-events: none;
}
.mc-prd-card:hover .mc-prd-card__hover,
.mc-prd-card:focus-visible .mc-prd-card__hover {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.mc-prd-card__hover-icon {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: color-mix(in srgb, var(--ic, var(--mc-red)) 12%, white);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
/* Fallback for browsers without color-mix */
@supports not (background: color-mix(in srgb, red 10%, white)) {
  .mc-prd-card__hover-icon {
    background: var(--mc-red-muted);
  }
}
.mc-prd-card__hover-icon svg { width: 22px; height: 22px; }

.mc-prd-card__hover-title {
  font-size: 13px;
  font-weight: 800;
  color: var(--mc-text);
  line-height: 1.2;
}
.mc-prd-card__hover-desc {
  font-size: 11.5px;
  color: var(--mc-text-muted);
  line-height: 1.65;
  flex: 1;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
}
.mc-prd-card__hover-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}
.mc-prd-card__hover-tags span {
  font-size: 10px;
  font-weight: 600;
  color: var(--mc-red);
  background: var(--mc-red-muted);
  border: 1px solid rgba(192,57,43,.15);
  padding: 2px 7px;
  border-radius: 20px;
}
.mc-prd-card__hover-btn {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  color: var(--mc-red);
  margin-top: 2px;
  transition: gap .2s, opacity .2s;
  opacity: .85;
}
.mc-prd-card__hover-btn:hover { opacity: 1; letter-spacing: .3px; }

/* ---- Mobile responsive ---- */
@media (max-width: 1100px) {
  .mc-prd-grid {
    grid-template-columns: 200px 1fr;
    gap: 16px;
  }
  .mc-prd-cards {
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
  }
}

@media (max-width: 768px) {
  .mc-prd-grid {
    grid-template-columns: 1fr;
  }
  .mc-prd-intro {
    min-height: auto;
  }
  .mc-prd-intro__body {
    padding: 24px 20px 20px;
  }
  .mc-prd-intro__list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px;
  }
  .mc-prd-cards {
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
  }
  /* On mobile, always show hover content statically */
  .mc-prd-card {
    min-height: 160px;
  }
}

@media (max-width: 480px) {
  .mc-prd-cards {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }
  /* Show static front always on touch, no hover state needed */
  .mc-prd-card {
    min-height: 140px;
  }
  .mc-prd-card__hover { display: none; }
  .mc-prd-card__front {
    opacity: 1 !important;
    transform: none !important;
  }
}

/* ---------- Enterprise WeChat Floating Service ---------- */
.mc-chat {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 1300;
}
.mc-float-service {
  width: auto;
  min-width: 68px;
  height: 64px;
  padding: 0 18px;
  border: none;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--mc-red) 0%, var(--mc-red-dark) 100%);
  color: #fff;
  box-shadow: 0 16px 40px rgba(192,57,43,.32);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  transition: transform .25s ease, box-shadow .25s ease;
}
.mc-float-service:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 42px rgba(192,57,43,.38);
}
.mc-float-service__icon {
  width: 24px;
  height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.mc-float-service__icon svg { width: 24px; height: 24px; }
.mc-float-service__text {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .2px;
}
.mc-chat-panel {
  position: absolute;
  right: 0;
  bottom: 80px;
  width: min(380px, calc(100vw - 32px));
  background: #fff;
  border: 1px solid rgba(192,57,43,.12);
  border-radius: 22px;
  box-shadow: 0 22px 60px rgba(17,12,12,.18);
  overflow: hidden;
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px) scale(.98);
  transform-origin: right bottom;
  transition: opacity .25s ease, transform .25s ease, visibility .25s ease;
}
.mc-chat--open .mc-chat-panel {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}
.mc-chat-panel__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding: 18px 18px 14px;
  color: #fff;
  background: linear-gradient(135deg, #8d2016 0%, #c0392b 58%, #d84b3b 100%);
}
.mc-chat-panel__eyebrow {
  font-size: 11px;
  opacity: .76;
  letter-spacing: 1px;
  margin-bottom: 4px;
}
.mc-chat-panel__title {
  font-size: 18px;
  font-weight: 700;
}
.mc-chat-panel__close {
  width: 32px;
  height: 32px;
  border: none;
  border-radius: 50%;
  background: rgba(255,255,255,.14);
  color: #fff;
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
}
.mc-chat-panel__body {
  max-height: 320px;
  overflow: auto;
  padding: 18px;
  background: linear-gradient(180deg, #fff 0%, #fff8f7 100%);
}
.mc-chat-msg {
  display: flex;
  margin-bottom: 12px;
}
.mc-chat-msg--user { justify-content: flex-end; }
.mc-chat-msg__bubble {
  max-width: 88%;
  padding: 10px 14px;
  border-radius: 16px;
  font-size: 14px;
  line-height: 1.7;
}
.mc-chat-msg__bubble a {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 2px;
}
.mc-chat-msg--service .mc-chat-msg__bubble {
  color: var(--mc-text);
  background: #fff;
  border: 1px solid #f0d8d3;
  border-bottom-left-radius: 8px;
}
.mc-chat-msg--user .mc-chat-msg__bubble {
  color: #fff;
  background: linear-gradient(135deg, var(--mc-red) 0%, #d34b3c 100%);
  border-bottom-right-radius: 8px;
}
.mc-chat-panel__quick {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 0 18px 14px;
  background: #fff8f7;
}
.mc-chat-quick {
  border: 1px solid #f0d5d0;
  background: #fff;
  color: var(--mc-red-dark);
  border-radius: 999px;
  padding: 7px 12px;
  font-size: 12px;
  cursor: pointer;
  transition: all .25s ease;
}
.mc-chat-quick:hover {
  border-color: rgba(192,57,43,.4);
  background: #fff0ed;
}
.mc-chat-panel__form {
  padding: 0 18px 18px;
  background: #fff;
}
.mc-chat-panel__textarea {
  width: 100%;
  resize: none;
  border: 1.5px solid #ead8d4;
  border-radius: 16px;
  padding: 12px 14px;
  font: inherit;
  font-size: 14px;
  color: var(--mc-text);
  outline: none;
  min-height: 96px;
}
.mc-chat-panel__textarea:focus {
  border-color: var(--mc-red);
  box-shadow: 0 0 0 3px rgba(192,57,43,.09);
}
.mc-chat-panel__actions {
  margin-top: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.mc-chat-panel__actions--stack {
  align-items: flex-start;
  flex-direction: column;
}
.mc-chat-panel__btns {
  width: 100%;
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  flex-wrap: wrap;
}
.mc-chat-panel__tip {
  font-size: 12px;
  color: #8b7a76;
  line-height: 1.7;
}
.mc-chat-panel__helper {
  margin-top: 12px;
  font-size: 12px;
  color: #9b7d78;
  line-height: 1.6;
}
.mc-chat-panel__helper code {
  font-family: Consolas, Monaco, 'Courier New', monospace;
  font-size: 11px;
  color: var(--mc-red-dark);
  background: #fff4f1;
  border: 1px solid #f2dbd6;
  border-radius: 8px;
  padding: 2px 6px;
}
.mc-chat-panel__close:focus-visible,
.mc-chat-quick:focus-visible,
.mc-float-service:focus-visible {
  outline: 2px solid rgba(192,57,43,.55);
  outline-offset: 2px;
}

@media (max-width: 520px) {
  .mc-chat {
    right: 16px;
    bottom: 16px;
  }
  .mc-chat-panel {
    bottom: 76px;
    width: min(380px, calc(100vw - 20px));
  }
  .mc-float-service {
    min-width: 58px;
    height: 58px;
    padding: 0 16px;
  }
  .mc-float-service__text {
    font-size: 13px;
  }
  .mc-chat-panel__btns {
    flex-direction: column;
    align-items: stretch;
  }
  .mc-chat-panel__btns .mc-btn {
    width: 100%;
  }
}