/* ============================================================
   海佳达 HAIJIADA — 冷冻海产供应链单页官网
   近黑 + 钴蓝 · 暗色商务风
   ============================================================ */

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: calc(var(--nav-h) + 12px);
  background: var(--bg);
}

body {
  background-color: var(--bg);
  background-image:
    radial-gradient(58% 38% at 84% 2%, rgba(59, 130, 246, 0.1) 0%, rgba(59, 130, 246, 0) 62%),
    radial-gradient(46% 34% at 2% 46%, rgba(37, 99, 235, 0.07) 0%, rgba(37, 99, 235, 0) 66%),
    radial-gradient(60% 40% at 50% 100%, rgba(29, 78, 216, 0.07) 0%, rgba(29, 78, 216, 0) 70%);
  background-attachment: fixed;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  overflow-x: hidden;
}

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

button,
input,
textarea,
select {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
}

button {
  cursor: pointer;
}

a {
  color: inherit;
  text-decoration: none;
}

ul,
ol {
  list-style: none;
}

::selection {
  background: rgba(59, 130, 246, 0.35);
  color: #ffffff;
}

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

/* 滚动条（暗色） */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: #04101e00;
}

::-webkit-scrollbar-thumb {
  background: #1e3a5c;
  border-radius: 99px;
}

::-webkit-scrollbar-thumb:hover {
  background: #2b4a72;
}

/* ---------- 排版 ---------- */
.t-h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-h1);
  line-height: 1.16;
  letter-spacing: 0.005em;
  background: linear-gradient(178deg, #ffffff 12%, #eaf1ff 46%, #a9c6f2 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: #ffffff;
  filter: drop-shadow(0 4px 26px rgba(0, 0, 0, 0.55));
}

.t-h2 {
  font-weight: 700;
  font-size: var(--text-h2);
  line-height: 1.25;
  letter-spacing: -0.01em;
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: var(--ink);
}

.t-h3 {
  font-weight: 700;
  font-size: var(--text-h3);
  line-height: 1.3;
  color: var(--ink);
}

.t-h4 {
  font-weight: 600;
  font-size: var(--text-h4);
  line-height: 1.35;
  color: var(--ink);
}

.t-lg {
  font-size: var(--text-lg);
  color: var(--ink-2);
}

.t-muted {
  color: var(--ink-2);
}

.t-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: var(--text-caption);
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent-text);
}

.t-eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, rgba(59, 130, 246, 0) 0%, var(--accent) 45%, var(--accent-hover) 100%);
  box-shadow: 0 0 12px rgba(59, 130, 246, 0.75);
}

/* ---------- 布局 ---------- */
.container {
  width: 100%;
  max-width: var(--page-max);
  margin-inline: auto;
  padding-inline: 24px;
}

.section {
  position: relative;
  padding-block: clamp(56px, 8vw, 88px);
}

.section--tint {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.035) 0%, rgba(255, 255, 255, 0.008) 55%, rgba(59, 130, 246, 0.045) 100%),
    var(--bg-alt);
  border-block: 1px solid var(--line-faint);
}

/* 深色带：顶部蓝光 + 底部沉黑，形成光晕过渡 */
.section--deep {
  background: radial-gradient(70% 120% at 12% 0%, rgba(59, 130, 246, 0.14) 0%, rgba(59, 130, 246, 0) 58%),
    radial-gradient(60% 90% at 92% 8%, rgba(29, 78, 216, 0.1) 0%, rgba(29, 78, 216, 0) 62%),
    linear-gradient(180deg, #081728 0%, #061322 46%, #071424 100%);
  border-block: 1px solid var(--line-faint);
  color: var(--ink);
}

.section-head {
  max-width: 680px;
  display: flex;
  flex-direction: column;
  gap: var(--sp-12);
  margin-bottom: clamp(36px, 5vw, 56px);
}

.section-head--center {
  margin-inline: auto;
  text-align: center;
  align-items: center;
}

.section--deep .t-h2,
.section--deep .t-h3 {
  color: #ffffff;
}

.section--deep .t-muted {
  color: var(--ink-2);
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: var(--text-base);
  font-weight: 500;
  white-space: nowrap;
  border-radius: var(--radius-pill);
  padding: 13px 28px;
  transition: background-color 0.25s ease, background-position 0.45s ease,
    border-color 0.2s ease, color 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease;
}

.btn:active {
  transform: translateY(1px);
}

.btn--primary {
  background-image: var(--grad-accent);
  background-size: 170% 170%;
  background-position: 0% 0%;
  color: #ffffff;
  box-shadow: var(--glow), inset 0 1px 0 rgba(255, 255, 255, 0.28),
    inset 0 -1px 0 rgba(0, 0, 0, 0.18);
  text-shadow: 0 1px 2px rgba(9, 26, 60, 0.35);
}

.btn--primary:hover {
  background-position: 100% 100%;
  box-shadow: 0 14px 38px rgba(59, 130, 246, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.34);
}

.btn--navy {
  background-image: linear-gradient(180deg, #24405f 0%, #13253d 100%);
  color: var(--ink);
  border: 1px solid var(--line-strong);
}

.btn--navy:hover {
  background-image: linear-gradient(180deg, #2a4a70 0%, #14293f 100%);
}

.btn--ghost {
  background-image: linear-gradient(145deg, rgba(255, 255, 255, 0.11) 0%, rgba(255, 255, 255, 0.025) 100%);
  border: 1px solid rgba(255, 255, 255, 0.22);
  color: #ffffff;
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}

.btn--ghost:hover {
  background-image: linear-gradient(145deg, rgba(107, 165, 255, 0.28) 0%, rgba(59, 130, 246, 0.1) 100%);
  border-color: rgba(107, 165, 255, 0.55);
  box-shadow: 0 10px 26px rgba(29, 78, 216, 0.22);
}

.btn--outline {
  background-image: linear-gradient(145deg, rgba(255, 255, 255, 0.045) 0%, rgba(255, 255, 255, 0) 100%);
  border: 1px solid var(--line-strong);
  color: var(--ink);
}

.btn--outline:hover {
  background-image: linear-gradient(145deg, rgba(107, 165, 255, 0.24) 0%, rgba(59, 130, 246, 0.06) 100%);
  border-color: var(--accent-line);
  color: #ffffff;
}

.btn--lg {
  padding: 15px 32px;
  font-size: var(--text-lg);
}

/* ---------- 导航 ---------- */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  background-image: linear-gradient(180deg, rgba(7, 20, 38, 0.92) 0%, rgba(7, 20, 38, 0.55) 100%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  backdrop-filter: blur(16px) saturate(140%);
  border-bottom: 1px solid transparent;
  transition: background-color 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.nav.is-scrolled {
  background-image: linear-gradient(180deg, rgba(4, 13, 25, 0.97) 0%, rgba(5, 15, 27, 0.88) 100%);
  border-bottom-color: transparent;
  box-shadow: 0 10px 34px rgba(0, 0, 0, 0.55);
}

/* 导航底部发光线 */
.nav::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 1px;
  background: var(--grad-hairline);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.nav.is-scrolled::after {
  opacity: 1;
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-24);
  width: 100%;
}

.nav__brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

/* 品牌 logo（新 VI：图形 + 中英文标准字，白色版用于深色底） */
.brand-logo {
  display: block;
  height: 46px;
  width: auto;
}

.brand-logo--footer {
  height: 44px;
}

.nav__brand-name {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.nav__brand-name strong {
  font-weight: 700;
  font-size: 19px;
  letter-spacing: 0.04em;
  background: linear-gradient(180deg, #ffffff 30%, #c6dbfa 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: var(--ink);
}

.nav__brand-name small {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.32em;
  color: var(--ink-3);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav__link {
  position: relative;
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 500;
  color: var(--ink-2);
  transition: color 0.2s ease, background-color 0.2s ease;
}

.nav__link:hover {
  color: var(--ink);
  background-image: linear-gradient(180deg, rgba(255, 255, 255, 0.09) 0%, rgba(255, 255, 255, 0.02) 100%);
}

.nav__link.is-active {
  color: #ffffff;
}

.nav__link.is-active::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, rgba(59, 130, 246, 0) 0%, var(--accent) 30%, var(--accent-hover) 70%, rgba(59, 130, 246, 0) 100%);
  box-shadow: 0 0 10px rgba(59, 130, 246, 0.85);
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--sp-12);
}

.nav .btn {
  padding: 10px 22px;
  font-size: 15px;
}

.nav__burger {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line-strong);
  background: var(--glass);
}

.nav__burger span {
  position: relative;
  width: 18px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
}

.nav__burger span::before,
.nav__burger span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
}

.nav__burger span::before {
  top: -6px;
}

.nav__burger span::after {
  top: 6px;
}

.nav__mobile {
  display: none;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 92svh;
  display: flex;
  align-items: center;
  padding: calc(var(--nav-h) + 64px) 24px 88px;
  overflow: hidden;
  background: var(--bg-deep);
}

.hero__bg {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(
      100deg,
      rgba(2, 9, 17, 0.97) 0%,
      rgba(3, 12, 23, 0.9) 40%,
      rgba(7, 20, 38, 0.55) 100%
    ),
    linear-gradient(0deg, rgba(3, 11, 21, 0.85) 0%, rgba(3, 11, 21, 0) 45%),
    url("../img/hero-ocean.png");
  background-size: auto, auto, cover;
  background-position: center;
}

/* 极光式蓝光叠层 */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(52% 62% at 80% 14%, rgba(59, 130, 246, 0.24) 0%, rgba(59, 130, 246, 0) 62%),
    radial-gradient(48% 52% at 98% 62%, rgba(29, 78, 216, 0.2) 0%, rgba(29, 78, 216, 0) 66%),
    radial-gradient(52% 48% at 10% 96%, rgba(37, 99, 235, 0.14) 0%, rgba(37, 99, 235, 0) 70%);
  mix-blend-mode: screen;
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 150px;
  background: linear-gradient(180deg, rgba(7, 20, 38, 0) 0%, rgba(7, 20, 38, 0.75) 62%, var(--bg) 100%);
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 760px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--sp-24);
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 255, 255, 0.14);
  background-image: linear-gradient(120deg, rgba(255, 255, 255, 0.14) 0%, rgba(255, 255, 255, 0.03) 55%, rgba(59, 130, 246, 0.16) 100%);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  font-size: var(--text-sm);
  font-weight: 500;
  color: rgba(255, 255, 255, 0.9);
}

.hero__badge .flag {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.18), 0 0 14px rgba(59, 130, 246, 0.9);
}

.hero__sub {
  max-width: 620px;
  font-size: var(--text-lg);
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.82);
}

.hero__sub b {
  color: #ffffff !important;
  font-weight: 600;
}

.hero__trust {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-12);
}

.trust-chip {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 18px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 255, 255, 0.13);
  background-image: linear-gradient(140deg, rgba(255, 255, 255, 0.12) 0%, rgba(255, 255, 255, 0.02) 60%, rgba(59, 130, 246, 0.12) 100%);
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.86);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.trust-chip:hover {
  border-color: rgba(107, 165, 255, 0.45);
  box-shadow: 0 8px 24px rgba(29, 78, 216, 0.22);
}

.trust-chip strong {
  font-weight: 600;
  color: #ffffff;
}

.trust-chip svg {
  width: 16px;
  height: 16px;
  stroke: var(--accent-hover);
  flex: none;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-16);
}

.hero__stats {
  position: relative;
  z-index: 1;
  margin-top: clamp(40px, 6vw, 72px);
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--sp-24);
  width: 100%;
}

.hero-stat {
  position: relative;
  border-left: none;
  padding-left: 18px;
}

.hero-stat::before {
  content: "";
  position: absolute;
  left: 0;
  top: 2px;
  bottom: 4px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--accent-hover) 0%, rgba(59, 130, 246, 0.5) 45%, rgba(59, 130, 246, 0) 100%);
}

.hero-stat strong {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-stat);
  line-height: 1.1;
  background: linear-gradient(170deg, #ffffff 15%, #dbe8ff 55%, #8fb6f2 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: #ffffff;
}

.hero-stat span {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.62);
}

/* ---------- 通用卡片 ---------- */
.card {
  position: relative;
  background-image: var(--grad-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  padding: var(--sp-32);
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  gap: var(--sp-12);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease,
    background-image 0.3s ease;
  overflow: hidden;
}

/* hover 时顶部亮起一道发光线 */
.card::after {
  content: "";
  position: absolute;
  left: 18%;
  right: 18%;
  top: -1px;
  height: 1px;
  background: var(--grad-hairline);
  opacity: 0;
  transition: opacity 0.35s ease;
  pointer-events: none;
}

.card:hover {
  transform: translateY(-4px);
  background-image: var(--grad-surface-hover);
  border-color: var(--accent-line);
  box-shadow: var(--shadow-pop), 0 0 40px rgba(29, 78, 216, 0.16);
}

.card:hover::after {
  opacity: 1;
}

.card__icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background-image: linear-gradient(145deg, rgba(107, 165, 255, 0.3) 0%, rgba(59, 130, 246, 0.08) 100%);
  border: 1px solid rgba(107, 165, 255, 0.24);
  color: var(--accent-text);
  display: grid;
  place-items: center;
  margin-bottom: var(--sp-4);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.09);
}

.card__icon svg {
  width: 24px;
  height: 24px;
}

.card--orange .card__icon {
  background-image: linear-gradient(145deg, rgba(107, 165, 255, 0.34) 0%, rgba(59, 130, 246, 0.06) 100%);
  color: var(--accent-text);
}

.card p {
  color: var(--ink-2);
  font-size: 15px;
}

/* 四大优势 */
.adv-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--sp-24);
}

.adv-num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-caption);
  letter-spacing: 0.2em;
  background: var(--grad-text-blue);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: var(--accent-text);
  opacity: 0.85;
}

/* ---------- 业务模式 ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--sp-24);
  counter-reset: step;
}

.step {
  position: relative;
  background-image: linear-gradient(180deg, #0f2038 0%, #081727 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  padding: var(--sp-32);
  box-shadow: var(--shadow-card);
}

/* 卡片内左上角一层蓝雾 */
.step::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(70% 90% at 0% 0%, rgba(59, 130, 246, 0.16) 0%, rgba(59, 130, 246, 0) 60%);
  pointer-events: none;
}

.step > * {
  position: relative;
}

.step__no {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-image: var(--grad-accent);
  color: #ffffff;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  margin-bottom: var(--sp-16);
  box-shadow: var(--glow), inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.step:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 50px;
  right: -18px;
  width: 12px;
  height: 12px;
  border-top: 2px solid var(--accent-line);
  border-right: 2px solid var(--accent-line);
  transform: rotate(45deg);
}

.step h3 {
  font-weight: 600;
  font-size: var(--text-h4);
  color: var(--ink);
  margin-bottom: var(--sp-8);
}

.step p {
  color: var(--ink-2);
  font-size: 15px;
}

.settle-band {
  position: relative;
  margin-top: var(--sp-40);
  background-image: radial-gradient(60% 140% at 88% 10%, rgba(59, 130, 246, 0.22) 0%, rgba(59, 130, 246, 0) 62%),
    linear-gradient(100deg, rgba(59, 130, 246, 0.2) 0%, rgba(59, 130, 246, 0.04) 55%, rgba(255, 255, 255, 0.02) 100%);
  background-color: #0a1a2d;
  border: 1px solid rgba(59, 130, 246, 0.28);
  border-radius: var(--radius-card);
  padding: clamp(24px, 4vw, 36px) clamp(24px, 4vw, 40px);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-16);
  color: #ffffff;
  overflow: hidden;
  box-shadow: inset 0 1px 0 rgba(107, 165, 255, 0.14), 0 20px 50px rgba(0, 0, 0, 0.4);
}

.settle-band::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--accent-hover), var(--accent-deep));
}

.settle-band strong {
  font-size: var(--text-h4);
  font-weight: 700;
}

.settle-band strong em {
  font-style: normal;
  color: var(--accent-text);
}

.settle-band span {
  color: var(--ink-2);
  font-size: var(--text-sm);
}

/* ---------- 产品中心 ---------- */
.species-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--sp-24);
}

.species-card {
  position: relative;
  background-image: var(--grad-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  padding: var(--sp-32);
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  gap: var(--sp-16);
  transition: border-color 0.25s ease, background-image 0.3s ease, transform 0.25s ease,
    box-shadow 0.25s ease;
}

.species-card:hover {
  border-color: var(--accent-line);
  background-image: var(--grad-surface-hover);
  transform: translateY(-3px);
  box-shadow: var(--shadow-pop), 0 0 44px rgba(29, 78, 216, 0.16);
}

/* 主打卡：渐变描边（双背景实现） */
.species-card--main {
  border: 1px solid transparent;
  background-image: linear-gradient(180deg, #132a48 0%, #0b1b2f 42%, #081727 100%) padding-box,
    var(--grad-border-blue) border-box;
  box-shadow: 0 0 0 1px rgba(59, 130, 246, 0.08), 0 24px 60px rgba(0, 0, 0, 0.55),
    0 0 60px rgba(29, 78, 216, 0.14);
}

.species-card--main:hover {
  background-image: linear-gradient(180deg, #17304f 0%, #0d1f36 42%, #081828 100%) padding-box,
    linear-gradient(150deg, #a8c8ff 0%, rgba(59, 130, 246, 0.2) 50%, #3b82f6 100%) border-box;
  box-shadow: 0 0 0 1px rgba(107, 165, 255, 0.2), 0 28px 70px rgba(0, 0, 0, 0.6),
    0 0 80px rgba(37, 99, 235, 0.26);
}

.species-card--main::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(90% 70% at 12% 0%, rgba(59, 130, 246, 0.22) 0%, rgba(59, 130, 246, 0) 62%);
  pointer-events: none;
}

.species-card--main > * {
  position: relative;
}

.species-card__flag {
  position: absolute;
  top: -13px;
  left: 24px;
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  background-image: var(--grad-accent);
  color: #ffffff;
  font-size: var(--text-caption);
  font-weight: 600;
  letter-spacing: 0.08em;
  box-shadow: var(--glow), inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.species-card h3 {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-weight: 700;
  font-size: var(--text-h3);
  color: var(--ink);
}

.species-card h3 small {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--ink-3);
  letter-spacing: 0.06em;
}

.species-card__pos {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--accent-text);
}

.species-card p {
  color: var(--ink-2);
  font-size: 15px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--sp-8);
}

.form-group h4 {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--ink-3);
  letter-spacing: 0.04em;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  padding: 5px 13px;
  border-radius: var(--radius-pill);
  background-image: linear-gradient(160deg, rgba(255, 255, 255, 0.09) 0%, rgba(255, 255, 255, 0.02) 100%);
  border: 1px solid var(--line);
  font-size: 13px;
  font-weight: 500;
  color: var(--ink-2);
}

.chip--half {
  background-image: linear-gradient(160deg, rgba(107, 165, 255, 0.26) 0%, rgba(59, 130, 246, 0.05) 100%);
  border-color: rgba(107, 165, 255, 0.28);
  color: var(--accent-text);
}

.species-card .btn {
  margin-top: auto;
  align-self: flex-start;
  padding: 10px 24px;
  font-size: 15px;
}

/* 其他品类 */
.other-species {
  margin-top: var(--sp-32);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--sp-24);
}

.other-card {
  background-image: linear-gradient(160deg, rgba(255, 255, 255, 0.045) 0%, rgba(255, 255, 255, 0.008) 60%, rgba(59, 130, 246, 0.05) 100%);
  background-color: var(--bg-alt);
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius-card);
  padding: var(--sp-24);
  display: flex;
  flex-direction: column;
  gap: var(--sp-8);
  transition: border-color 0.25s ease, background-image 0.3s ease;
}

.other-card:hover {
  border-color: var(--accent-line);
  background-image: linear-gradient(160deg, rgba(107, 165, 255, 0.16) 0%, rgba(59, 130, 246, 0.03) 60%, rgba(59, 130, 246, 0.08) 100%);
}

.other-card h4 {
  font-weight: 600;
  color: var(--ink);
  display: flex;
  align-items: center;
  gap: 10px;
}

.other-card h4 svg {
  width: 20px;
  height: 20px;
  color: var(--accent-text);
}

.other-card p {
  font-size: 14px;
  color: var(--ink-2);
}

.source-note {
  margin-top: var(--sp-24);
  padding: var(--sp-16) var(--sp-24);
  border-radius: var(--radius-card);
  background-image: linear-gradient(100deg, rgba(59, 130, 246, 0.18) 0%, rgba(59, 130, 246, 0.03) 68%, rgba(59, 130, 246, 0.1) 100%);
  border: 1px solid rgba(59, 130, 246, 0.22);
  font-size: var(--text-sm);
  color: var(--ink-2);
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: inset 0 1px 0 rgba(107, 165, 255, 0.12);
}

.source-note svg {
  width: 20px;
  height: 20px;
  flex: none;
  color: var(--accent-text);
}

/* 品类预告 */
.roadmap {
  margin-top: var(--sp-32);
  border-radius: var(--radius-card);
  background-image: radial-gradient(60% 130% at 92% 0%, rgba(59, 130, 246, 0.24) 0%, rgba(59, 130, 246, 0) 60%),
    linear-gradient(100deg, rgba(59, 130, 246, 0.18) 0%, rgba(59, 130, 246, 0.02) 60%, rgba(255, 255, 255, 0.03) 100%);
  background-color: #081727;
  border: 1px solid var(--line);
  color: #ffffff;
  padding: var(--sp-24) var(--sp-32);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-16);
  box-shadow: inset 0 1px 0 rgba(107, 165, 255, 0.1);
}

.roadmap strong {
  font-size: var(--text-lg);
  font-weight: 600;
}

.roadmap strong em {
  font-style: normal;
  color: var(--accent-text);
}

.roadmap span {
  font-size: var(--text-sm);
  color: var(--ink-2);
}

/* ---------- 服务网络 ---------- */
.network {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: clamp(24px, 5vw, 56px);
  align-items: stretch;
}

.network__flow {
  display: flex;
  flex-direction: column;
  gap: var(--sp-16);
}

.flow-node {
  background-image: linear-gradient(135deg, rgba(255, 255, 255, 0.075) 0%, rgba(255, 255, 255, 0.015) 55%, rgba(59, 130, 246, 0.06) 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  padding: var(--sp-20) var(--sp-24);
  display: flex;
  gap: var(--sp-16);
  align-items: flex-start;
  transition: border-color 0.25s ease, background-image 0.3s ease, box-shadow 0.25s ease;
}

.flow-node:hover {
  border-color: var(--accent-line);
  background-image: linear-gradient(135deg, rgba(107, 165, 255, 0.18) 0%, rgba(59, 130, 246, 0.04) 55%, rgba(59, 130, 246, 0.12) 100%);
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.4), 0 0 32px rgba(29, 78, 216, 0.14);
}

.flow-node__icon {
  flex: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background-image: linear-gradient(145deg, rgba(107, 165, 255, 0.32) 0%, rgba(59, 130, 246, 0.08) 100%);
  border: 1px solid rgba(107, 165, 255, 0.24);
  display: grid;
  place-items: center;
  color: var(--accent-text);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.flow-node__icon svg {
  width: 22px;
  height: 22px;
}

.flow-node h4 {
  font-weight: 600;
  color: #ffffff;
  font-size: 17px;
}

.flow-node h4 small {
  display: block;
  font-size: var(--text-caption);
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--accent-text);
  margin-bottom: 4px;
}

.flow-node p {
  font-size: 14px;
  color: var(--ink-2);
}

.flow-link {
  align-self: center;
  width: 2px;
  height: 22px;
  margin-left: 45px;
  background: linear-gradient(180deg, var(--accent-hover) 0%, rgba(59, 130, 246, 0.35) 45%, rgba(59, 130, 246, 0.05) 100%);
  box-shadow: 0 0 10px rgba(59, 130, 246, 0.35);
}

.network__media {
  border-radius: var(--radius-card);
  overflow: hidden;
  position: relative;
  min-height: 320px;
  border: 1px solid var(--line);
  background: #040e1b;
}

.network__media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.62) contrast(1.08) saturate(0.7);
}

.network__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(5, 15, 29, 0.35) 0%, rgba(5, 15, 29, 0.15) 45%, rgba(5, 15, 29, 0.9) 100%),
    linear-gradient(120deg, rgba(59, 130, 246, 0.22), rgba(59, 130, 246, 0) 60%);
  pointer-events: none;
}

.network__media figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1;
  padding: 40px 24px 20px;
  background: linear-gradient(180deg, rgba(3, 11, 21, 0) 0%, rgba(3, 11, 21, 0.88) 100%);
  color: rgba(255, 255, 255, 0.86);
  font-size: var(--text-sm);
}

/* 两类客户 */
.client-grid {
  margin-top: clamp(32px, 5vw, 56px);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--sp-24);
}

.client-card {
  background-image: linear-gradient(180deg, #102339 0%, #0a1a2d 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  padding: var(--sp-32);
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  gap: var(--sp-12);
  transition: border-color 0.25s ease, background-image 0.3s ease, box-shadow 0.25s ease;
}

.client-card:hover {
  border-color: var(--accent-line);
  background-image: linear-gradient(180deg, #122540 0%, #0a1a2c 100%);
  box-shadow: var(--shadow-pop), 0 0 40px rgba(29, 78, 216, 0.14);
}

.client-card__tag {
  align-self: flex-start;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  font-size: var(--text-caption);
  font-weight: 600;
  letter-spacing: 0.1em;
}

.client-card__tag--a {
  background-image: linear-gradient(140deg, rgba(255, 255, 255, 0.12) 0%, rgba(255, 255, 255, 0.02) 100%);
  border: 1px solid var(--line);
  color: var(--ink-2);
}

.client-card__tag--b {
  background-image: linear-gradient(140deg, rgba(107, 165, 255, 0.3) 0%, rgba(59, 130, 246, 0.06) 100%);
  border: 1px solid rgba(107, 165, 255, 0.3);
  color: var(--accent-text);
}

.client-card h3 {
  font-weight: 700;
  font-size: var(--text-h4);
  color: var(--ink);
}

.client-card ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.client-card li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 15px;
  color: var(--ink-2);
}

.client-card li svg {
  flex: none;
  width: 18px;
  height: 18px;
  margin-top: 4px;
  stroke: var(--accent-hover);
}

/* ---------- 品质与风控 ---------- */
.qc-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--sp-24);
}

.qc-card {
  background-image: linear-gradient(160deg, rgba(255, 255, 255, 0.085) 0%, rgba(255, 255, 255, 0.015) 55%, rgba(59, 130, 246, 0.055) 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  padding: var(--sp-24);
  display: flex;
  flex-direction: column;
  gap: var(--sp-12);
  transition: border-color 0.25s ease, background-image 0.3s ease, box-shadow 0.25s ease;
}

.qc-card:hover {
  border-color: var(--accent-line);
  background-image: linear-gradient(160deg, rgba(107, 165, 255, 0.2) 0%, rgba(59, 130, 246, 0.04) 55%, rgba(59, 130, 246, 0.12) 100%);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.42), 0 0 34px rgba(29, 78, 216, 0.16);
}

.qc-card__icon {
  width: 42px;
  height: 42px;
  border-radius: 11px;
  background-image: linear-gradient(145deg, rgba(107, 165, 255, 0.34) 0%, rgba(59, 130, 246, 0.06) 100%);
  border: 1px solid rgba(107, 165, 255, 0.24);
  color: var(--accent-text);
  display: grid;
  place-items: center;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.qc-card__icon svg {
  width: 21px;
  height: 21px;
}

.qc-card h4 {
  font-weight: 600;
  color: #ffffff;
  font-size: var(--text-lg);
}

.qc-card p {
  font-size: 14px;
  line-height: 1.65;
  color: var(--ink-2);
}

/* ---------- 关于我们 ---------- */
.about {
  display: grid;
  grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
  gap: clamp(24px, 5vw, 56px);
  align-items: start;
}

.about__copy {
  display: flex;
  flex-direction: column;
  gap: var(--sp-16);
}

.timeline {
  display: flex;
  flex-direction: column;
}

.timeline__item {
  position: relative;
  padding: 0 0 var(--sp-24) 36px;
  border-left: 1px solid var(--line-strong);
}

.timeline__item:last-child {
  border-left-color: transparent;
  padding-bottom: 0;
}

.timeline__item::before {
  content: "";
  position: absolute;
  left: -6px;
  top: 6px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background-image: linear-gradient(155deg, #a8c8ff 0%, #3b82f6 55%, #1d4ed8 100%);
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.12), 0 0 16px rgba(59, 130, 246, 0.55);
}

.timeline__item h4 {
  font-weight: 600;
  color: var(--ink);
}

.timeline__item p {
  font-size: 14px;
  color: var(--ink-2);
}

/* ---------- 联系我们 ---------- */
.contact-tabs {
  display: flex;
  gap: var(--sp-12);
  justify-content: center;
  margin-bottom: var(--sp-32);
}

.contact-tab {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 28px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line-strong);
  background-image: linear-gradient(150deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.02) 100%);
  font-weight: 500;
  color: var(--ink-2);
  transition: all 0.2s ease;
}

.contact-tab svg {
  width: 18px;
  height: 18px;
}

.contact-tab:hover {
  color: var(--ink);
  border-color: rgba(107, 165, 255, 0.4);
  background-image: linear-gradient(150deg, rgba(107, 165, 255, 0.16) 0%, rgba(59, 130, 246, 0.03) 100%);
}

.contact-tab.is-active {
  background-image: var(--grad-accent);
  border-color: transparent;
  color: #ffffff;
  box-shadow: var(--glow), inset 0 1px 0 rgba(255, 255, 255, 0.28);
}

.contact-panel {
  position: relative;
  max-width: 680px;
  margin-inline: auto;
  background-image: radial-gradient(80% 60% at 50% -10%, rgba(59, 130, 246, 0.14) 0%, rgba(59, 130, 246, 0) 60%),
    linear-gradient(180deg, #0f2038 0%, #0a1a2d 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-pop);
  padding: clamp(24px, 4vw, 40px);
  overflow: hidden;
}

/* 面板顶部渐变发光线 */
.contact-panel::before {
  content: "";
  position: absolute;
  left: 12%;
  right: 12%;
  top: 0;
  height: 1px;
  background: var(--grad-hairline);
  pointer-events: none;
}

.contact-panel__intro {
  margin-bottom: var(--sp-24);
  padding: var(--sp-16) var(--sp-20);
  border-radius: 10px;
  background-image: linear-gradient(120deg, rgba(59, 130, 246, 0.2) 0%, rgba(59, 130, 246, 0.04) 100%);
  border: 1px solid rgba(59, 130, 246, 0.22);
  font-size: var(--text-sm);
  color: var(--ink-2);
  display: none;
}

.contact-panel[data-mode="factory"] .contact-panel__intro--factory {
  display: block;
}

.contact-panel[data-mode="dealer"] .contact-panel__intro--dealer {
  display: block;
}

/* ---------- 联系我们 · 微信扫码 ---------- */
.qr-card {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(24px, 4.5vw, 44px);
  align-items: center;
}

/* 二维码白底瓷片 + 渐变描边 */
.qr-card__frame {
  margin: 0;
  padding: 14px 14px 12px;
  border: 1px solid transparent;
  border-radius: 16px;
  background-image: linear-gradient(#ffffff, #ffffff) padding-box,
    var(--grad-border-blue) border-box;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.55), 0 0 48px rgba(29, 78, 216, 0.2);
  text-align: center;
}

.qr-card__frame img {
  width: 232px;
  height: 232px;
  border-radius: 6px;
}

.qr-card__frame figcaption {
  margin-top: 10px;
  font-size: var(--text-caption);
  font-weight: 500;
  letter-spacing: 0.06em;
  color: #6d87a8;
}

.qr-card__title {
  font-size: var(--text-lg);
  font-weight: 700;
  color: #ffffff;
  margin-bottom: var(--sp-20);
}

.qr-steps {
  display: flex;
  flex-direction: column;
  gap: var(--sp-20);
}

.qr-steps li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.qr-step-no {
  flex: none;
  display: inline-grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background-image: var(--grad-accent);
  color: #ffffff;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 13px;
  box-shadow: 0 6px 16px rgba(29, 78, 216, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.3);
  margin-top: 2px;
}

.qr-steps strong {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 2px;
}

.qr-steps p {
  font-size: 14px;
  line-height: 1.65;
  color: var(--ink-2);
}

.qr-card__hint {
  margin-top: var(--sp-24);
  padding: 12px 16px;
  border-radius: 10px;
  background-image: linear-gradient(120deg, rgba(59, 130, 246, 0.18) 0%, rgba(59, 130, 246, 0.04) 100%);
  border: 1px solid rgba(59, 130, 246, 0.2);
  font-size: 13px;
  color: var(--ink-2);
}

/* ---------- 页脚 ---------- */
.footer {
  position: relative;
  background-image: radial-gradient(64% 70% at 50% 0%, rgba(59, 130, 246, 0.13) 0%, rgba(59, 130, 246, 0) 62%),
    linear-gradient(180deg, #051322 0%, #030c17 55%, #020b15 100%);
  border-top: 1px solid var(--line-faint);
  color: var(--ink-2);
  padding: clamp(40px, 6vw, 64px) 0 0;
}

/* 页脚顶部渐变发光线 */
.footer::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: -1px;
  height: 1px;
  background: var(--grad-hairline);
  pointer-events: none;
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--sp-40);
  padding-bottom: var(--sp-40);
}

.footer__brand p {
  margin-top: var(--sp-16);
  max-width: 380px;
  font-size: 14px;
  color: var(--ink-3);
}

.footer h4 {
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--ink-3);
  margin-bottom: var(--sp-16);
}

.footer ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer a {
  font-size: 14px;
  color: var(--ink-2);
  transition: color 0.2s ease;
}

.footer a:hover {
  color: var(--accent-text);
}

/* 页脚底部两行：左右留白，避免文字顶到容器边缘 */
.footer .container {
  padding-inline: clamp(32px, 5vw, 56px);
}

.footer__kw {
  font-size: 12px;
  line-height: 1.9;
  color: #5f7c9e;
  border-top: 1px solid var(--line-faint);
  padding: var(--sp-20) 0;
}

.footer__meta {
  border-top: 1px solid var(--line-faint);
  padding: var(--sp-20) 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-12);
  font-size: 13px;
  color: var(--ink-3);
}

/* ---------- Reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s ease, transform 0.7s ease;
  transition-delay: var(--reveal-delay, 0s);
  will-change: opacity, transform;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  html {
    scroll-behavior: auto;
  }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .adv-grid,
  .qc-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

  .network {
    grid-template-columns: 1fr;
  }

  .network__media {
    min-height: 260px;
  }

  .about {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 860px) {
  .nav__links,
  .nav .btn--primary {
    display: none;
  }

  .nav__burger {
    display: inline-flex;
  }

  .nav__mobile {
    display: block;
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    z-index: 99;
    background-image: radial-gradient(64% 80% at 100% 0%, rgba(59, 130, 246, 0.2) 0%, rgba(59, 130, 246, 0) 62%),
      linear-gradient(180deg, rgba(8, 21, 37, 0.98) 0%, rgba(4, 13, 25, 0.97) 100%);
    -webkit-backdrop-filter: blur(18px);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.7);
    padding: 8px 24px 20px;
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s ease;
  }

  .nav.is-open .nav__mobile {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .nav__mobile a {
    display: block;
    padding: 13px 4px;
    font-size: 16px;
    font-weight: 500;
    color: var(--ink);
    border-bottom: 1px solid var(--line-faint);
  }

  .nav__mobile a:last-child {
    border-bottom: none;
  }

  .steps {
    grid-template-columns: 1fr;
  }

  .step:not(:last-child)::after {
    display: none;
  }

  .client-grid,
  .species-grid,
  .other-species {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .adv-grid,
  .qc-grid,
  .hero__stats {
    grid-template-columns: 1fr;
  }

  .brand-logo {
    height: 38px;
  }

  .hero__content {
    align-items: flex-start;
  }

  .hero__cta .btn {
    width: 100%;
  }

  .qr-card {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: center;
  }

  .qr-steps li {
    text-align: left;
  }

  .qr-card__hint {
    text-align: left;
  }

  .contact-tabs {
    flex-direction: column;
    align-items: stretch;
  }

  .footer__grid {
    grid-template-columns: 1fr;
  }

  .settle-band,
  .roadmap {
    flex-direction: column;
    align-items: flex-start;
  }
}