/* ============================================================
   组件层：按钮 · 卡片 · 标签 · 表格 · 表单 · 弹层 · 图表装饰
   ============================================================ */

/* ---------------- 按钮 ---------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 26px;
  border-radius: var(--r-pill);
  font-size: 0.95rem;
  font-weight: var(--fw-medium);
  letter-spacing: 0.02em;
  line-height: 1;
  border: 1px solid transparent;
  transition: transform var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease),
    box-shadow var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn--primary { background: var(--brand); color: #fff; box-shadow: var(--sh-brand); }
.btn--primary:hover { background: var(--brand-deep); box-shadow: 0 14px 34px rgba(26, 42, 170, 0.26); }

.btn--grad { background: var(--grad-brand); color: #fff; box-shadow: var(--sh-brand); }
.btn--grad:hover { box-shadow: 0 14px 34px rgba(46, 124, 246, 0.3); }

.btn--outline { border-color: var(--line); color: var(--ink); background: #fff; }
.btn--outline:hover { border-color: var(--brand); color: var(--brand); }

.btn--ghost { color: var(--ink); background: rgba(24, 40, 72, 0.05); }
.btn--ghost:hover { background: rgba(24, 40, 72, 0.09); }

.btn--light { background: #fff; color: var(--brand); }
.btn--light:hover { background: rgba(255, 255, 255, 0.9); }

.btn--outline-inv { border-color: rgba(255, 255, 255, 0.35); color: #fff; }
.btn--outline-inv:hover { border-color: #fff; background: rgba(255, 255, 255, 0.1); }

.btn--link { padding: 0; color: var(--brand); font-weight: var(--fw-medium); border-radius: 0; }
.btn--link::after { content: "→"; transition: transform var(--dur-fast) var(--ease); }
.btn--link:hover { transform: none; }
.btn--link:hover::after { transform: translateX(4px); }

.btn--sm { padding: 10px 18px; font-size: 0.87rem; }
.btn--lg { padding: 16px 34px; font-size: 1.02rem; }
.btn--block { width: 100%; }
.btn[disabled], .btn[aria-disabled="true"] { opacity: 0.5; pointer-events: none; }

/* ---------------- 卡片 ---------------- */
.card {
  background: #fff;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-lg);
  padding: clamp(24px, 2.6vw, 36px);
  transition: transform var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out), border-color var(--dur) var(--ease);
}
.card--hover:hover { transform: translateY(-4px); box-shadow: var(--sh-3); border-color: var(--line); }
.card--flat { background: var(--panel); border-color: transparent; }

/* 通用特性卡（技术底座 / 理念） */
.feature { display: flex; flex-direction: column; gap: 14px; }
.feature__icon {
  width: 48px; height: 48px;
  border-radius: var(--r-sm);
  display: grid; place-items: center;
  background: var(--accent-soft, rgba(26, 42, 170, 0.08));
  color: var(--accent, var(--brand));
}
.feature__icon svg { width: 24px; height: 24px; }
.feature h3 { font-size: 1.1rem; font-weight: var(--fw-semibold); }
.feature p { color: var(--ink-2); font-size: var(--fs-sm); line-height: 1.8; }

/* ---------------- 产品卡 ---------------- */
.product-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: transform var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out), border-color var(--dur) var(--ease);
}
.product-card:hover { transform: translateY(-6px); box-shadow: var(--sh-3); border-color: transparent; }
.product-card__media { position: relative; aspect-ratio: 16 / 10; overflow: hidden; background: var(--panel-2); }
.product-card__media picture { display: block; width: 100%; height: 100%; }
.product-card__media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.9s var(--ease-out); }
.product-card:hover .product-card__media img { transform: scale(1.045); }
.product-card__body { padding: 26px clamp(20px, 2vw, 28px) 30px; display: flex; flex-direction: column; gap: 14px; flex: 1; }
.product-card__top { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.product-card__no {
  font-size: 0.72rem;
  font-weight: var(--fw-semibold);
  letter-spacing: 0.16em;
  color: var(--accent, var(--brand));
}
.product-card h3 { font-size: 1.28rem; font-weight: var(--fw-semibold); }
.product-card__en { font-size: 0.72rem; letter-spacing: 0.24em; text-transform: uppercase; color: var(--ink-3); }
.product-card p { color: var(--ink-2); font-size: var(--fs-sm); line-height: 1.8; flex: 1; }
.product-card__foot { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding-top: 6px; }

/* 产品卡左侧品牌色强调条 */
.product-card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: var(--accent, var(--brand));
  opacity: 0;
  transition: opacity var(--dur) var(--ease);
  z-index: 2;
}
.product-card:hover::before { opacity: 1; }

/* ---------------- 标签 / 徽章 ---------------- */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: var(--r-pill);
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  background: var(--accent-soft, rgba(26, 42, 170, 0.08));
  color: var(--accent, var(--brand));
  white-space: nowrap;
}
.chip--line { background: transparent; border: 1px solid var(--line); color: var(--ink-2); }
.chip--inv { background: rgba(255, 255, 255, 0.12); color: #fff; }
.chip__dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; }

.tag {
  display: inline-block;
  padding: 5px 12px;
  border-radius: var(--r-xs);
  font-size: var(--fs-xs);
  background: var(--panel);
  color: var(--ink-2);
  border: 1px solid var(--line-soft);
}

/* ---------------- 筛选 Tab ---------------- */
.filter { display: flex; flex-wrap: wrap; gap: 10px; }
.filter__btn {
  padding: 10px 20px;
  border-radius: var(--r-pill);
  font-size: 0.9rem;
  color: var(--ink-2);
  border: 1px solid var(--line);
  background: #fff;
  transition: all var(--dur-fast) var(--ease);
}
.filter__btn:hover { border-color: var(--brand-soft); color: var(--brand); }
.filter__btn.is-active {
  background: var(--brand);
  border-color: var(--brand);
  color: #fff;
  box-shadow: var(--sh-brand);
}

/* ---------------- 媒体框 ---------------- */
.media {
  position: relative;
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--panel-2);
  box-shadow: var(--sh-2);
}
.media img { width: 100%; height: 100%; object-fit: cover; }
.media picture { display: block; width: 100%; height: 100%; }
.media--16x9 { aspect-ratio: 16 / 9; }
.media--4x3 { aspect-ratio: 4 / 3; }
.media--1x1 { aspect-ratio: 1 / 1; }
.media--3x2 { aspect-ratio: 3 / 2; }
.media--natural img { height: auto; object-fit: contain; }
.media--tilt { box-shadow: var(--sh-3); }

.media-grid { display: grid; gap: 14px; grid-template-columns: repeat(3, minmax(0, 1fr)); }
@media (max-width: 900px) { .media-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .media-grid { grid-template-columns: 1fr; } }

/* ---------------- 数据 / 统计 ---------------- */
.stat { display: flex; flex-direction: column; gap: 6px; }
.stat__num {
  font-size: var(--fs-stat);
  font-weight: var(--fw-light);
  line-height: 1;
  letter-spacing: -0.03em;
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-variant-numeric: tabular-nums;
}
.stat__num sup { font-size: 0.42em; vertical-align: super; margin-left: 2px; }
.stat__label { font-size: var(--fs-sm); color: var(--ink-2); }
.section--night .stat__label { color: var(--ink-inv-2); }

.stat-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--gap); }
.stat-row--3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 800px) { .stat-row, .stat-row--3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 460px) { .stat-row, .stat-row--3 { grid-template-columns: 1fr; } }

/* ---------------- 步骤 / 流程 ---------------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--gap); counter-reset: s; }
.step { position: relative; padding-top: 28px; }
.step::before {
  content: "";
  position: absolute; left: 0; top: 0;
  width: 100%; height: 2px;
  background: var(--line);
}
.step::after {
  content: "";
  position: absolute; left: 0; top: -3px;
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--grad-brand);
}
.step__no { font-size: var(--fs-xs); letter-spacing: 0.18em; color: var(--accent, var(--brand)); font-weight: var(--fw-semibold); }
.step h3 { font-size: 1.02rem; margin: 8px 0 8px; font-weight: var(--fw-semibold); }
.step p { font-size: var(--fs-sm); color: var(--ink-2); line-height: 1.8; }
@media (max-width: 820px) { .steps { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .steps { grid-template-columns: 1fr; } }

/* ---------------- 对比表 ---------------- */
.compare { width: 100%; border-collapse: collapse; font-size: var(--fs-sm); }
.compare th, .compare td { padding: 18px 20px; text-align: left; border-bottom: 1px solid var(--line-soft); vertical-align: top; }
.compare thead th { font-size: var(--fs-xs); letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-3); font-weight: var(--fw-semibold); border-bottom-color: var(--line); }
.compare tbody tr:hover { background: var(--bg-soft); }
.compare td:first-child { font-weight: var(--fw-medium); color: var(--ink); width: 22%; }
.compare .col-inv { color: var(--ink-3); }
.compare .col-ninv { color: var(--ink); }
.compare .badge-inv { display: inline-flex; align-items: center; gap: 6px; color: var(--ink-3); }
.compare .badge-ninv { display: inline-flex; align-items: center; gap: 6px; color: var(--teal); }
.compare-wrap { overflow-x: auto; border: 1px solid var(--line-soft); border-radius: var(--r-lg); background: #fff; }

/* ---------------- 时间轴 ---------------- */
.timeline { position: relative; padding-left: 30px; }
.timeline::before {
  content: "";
  position: absolute; left: 7px; top: 8px; bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--blue), var(--indigo) 55%, var(--teal));
  opacity: 0.35;
}
.timeline__item { position: relative; padding-bottom: 34px; }
.timeline__item:last-child { padding-bottom: 0; }
.timeline__item::before {
  content: "";
  position: absolute; left: -30px; top: 7px;
  width: 16px; height: 16px; border-radius: 50%;
  background: #fff;
  border: 3px solid var(--brand);
  box-shadow: 0 0 0 4px rgba(26, 42, 170, 0.08);
}
.timeline__year { font-size: var(--fs-xs); font-weight: var(--fw-semibold); letter-spacing: 0.16em; color: var(--brand); margin-bottom: 6px; }
.timeline__item h3 { font-size: 1.05rem; margin-bottom: 6px; font-weight: var(--fw-semibold); }
.timeline__item p { font-size: var(--fs-sm); color: var(--ink-2); }

/* ---------------- 手风琴（FAQ） ---------------- */
.accordion { border-top: 1px solid var(--line-soft); }
.acc-item { border-bottom: 1px solid var(--line-soft); }
.acc-q {
  width: 100%;
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
  padding: 22px 4px;
  text-align: left;
  font-size: 1.02rem;
  font-weight: var(--fw-medium);
  transition: color var(--dur-fast) var(--ease);
}
.acc-q:hover { color: var(--brand); }
.acc-q .acc-ico { position: relative; width: 16px; height: 16px; flex: 0 0 auto; }
.acc-q .acc-ico::before, .acc-q .acc-ico::after {
  content: ""; position: absolute; left: 50%; top: 50%;
  width: 14px; height: 1.5px; background: currentColor; border-radius: 2px;
  transform: translate(-50%, -50%);
  transition: transform var(--dur-fast) var(--ease);
}
.acc-q .acc-ico::after { transform: translate(-50%, -50%) rotate(90deg); }
.acc-item.is-open .acc-q .acc-ico::after { transform: translate(-50%, -50%) rotate(0); }
.acc-item.is-open .acc-q { color: var(--brand); }
.acc-a { overflow: hidden; height: 0; transition: height var(--dur) var(--ease-out); }
.acc-a__inner { padding: 0 4px 24px; color: var(--ink-2); font-size: var(--fs-sm); line-height: 1.9; max-width: 800px; }

/* ---------------- 表单 ---------------- */
.field { display: flex; flex-direction: column; gap: 8px; margin-bottom: 18px; }
.field__label { font-size: var(--fs-sm); font-weight: var(--fw-medium); color: var(--ink); }
.field__label .req { color: #d9534f; margin-left: 3px; }
.field__hint { font-size: var(--fs-xs); color: var(--ink-3); }
.input, .textarea, .select {
  width: 100%;
  padding: 13px 16px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: #fff;
  color: var(--ink);
  font-size: 0.95rem;
  transition: border-color var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);
}
.input::placeholder, .textarea::placeholder { color: var(--ink-3); }
.input:focus, .textarea:focus, .select:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: 0 0 0 4px rgba(46, 124, 246, 0.12);
}
.textarea { min-height: 132px; resize: vertical; line-height: 1.8; }
.select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.5 6 6.5l5-5' stroke='%235A6B85' stroke-width='1.6' fill='none' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 16px center; padding-right: 42px; }
.field-error { font-size: var(--fs-xs); color: #d9534f; min-height: 1em; }
.input.is-invalid, .textarea.is-invalid { border-color: #d9534f; }

/* 蜜罐字段：对用户不可见 */
.hp-field { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; pointer-events: none; }

/* ---------------- 提示条 ---------------- */
.notice {
  display: flex; gap: 12px; align-items: flex-start;
  padding: 14px 18px;
  border-radius: var(--r-sm);
  font-size: var(--fs-sm);
  line-height: 1.7;
}
.notice--info { background: rgba(46, 124, 246, 0.08); color: #1d4fa8; }
.notice--warn { background: rgba(217, 153, 40, 0.1); color: #8a610f; }
.notice--ok { background: rgba(15, 178, 157, 0.1); color: #0a7466; }
.notice--err { background: rgba(217, 83, 79, 0.1); color: #a3352f; }

/* ---------------- 弹层 / Toast ---------------- */
.modal {
  position: fixed; inset: 0;
  z-index: var(--z-modal);
  display: grid; place-items: center;
  padding: 24px;
  background: rgba(10, 24, 48, 0.5);
  backdrop-filter: blur(4px);
  opacity: 0; visibility: hidden;
  transition: opacity var(--dur-fast) var(--ease), visibility var(--dur-fast);
}
.modal.is-open { opacity: 1; visibility: visible; }
.modal__panel {
  background: #fff;
  border-radius: var(--r-lg);
  width: min(860px, 100%);
  max-height: 88vh;
  overflow: auto;
  box-shadow: 0 30px 80px rgba(10, 24, 48, 0.3);
  transform: translateY(12px) scale(0.99);
  transition: transform var(--dur) var(--ease-out);
}
.modal.is-open .modal__panel { transform: none; }
.modal__head {
  position: sticky; top: 0; z-index: 2;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 22px clamp(20px, 3vw, 34px);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line-soft);
}
.modal__body { padding: clamp(20px, 3vw, 34px); }
.modal__close { width: 38px; height: 38px; border-radius: 50%; display: grid; place-items: center; background: var(--panel); font-size: 1.2rem; line-height: 1; color: var(--ink-2); }
.modal__close:hover { background: var(--panel-2); color: var(--ink); }

.toast-host {
  position: fixed; z-index: var(--z-toast);
  left: 50%; bottom: 32px;
  transform: translateX(-50%);
  display: flex; flex-direction: column; gap: 10px;
  pointer-events: none;
}
.toast {
  padding: 13px 22px;
  border-radius: var(--r-pill);
  background: rgba(24, 40, 72, 0.94);
  color: #fff;
  font-size: var(--fs-sm);
  box-shadow: var(--sh-3);
  animation: toast-in 0.34s var(--ease-out);
}
.toast--ok { background: #0a9c88; }
.toast--err { background: #c0453f; }
@keyframes toast-in { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }

/* ---------------- 图片 / 文字轮播式横幅 ---------------- */
.cta-band {
  position: relative;
  border-radius: var(--r-xl);
  padding: clamp(40px, 5vw, 72px);
  background: var(--grad-night);
  color: #fff;
  overflow: hidden;
  isolation: isolate;
}
.cta-band::before {
  content: "";
  position: absolute; inset: 0; z-index: -1;
  background: radial-gradient(620px 300px at 84% 10%, rgba(46, 124, 246, 0.32), transparent 62%),
              radial-gradient(520px 300px at 6% 96%, rgba(15, 178, 157, 0.22), transparent 60%);
}
.cta-band h2 { color: #fff; margin-bottom: 16px; font-weight: var(--fw-light); }
.cta-band p { color: var(--ink-inv-2); max-width: 620px; margin-bottom: 30px; }
.cta-band__actions { display: flex; flex-wrap: wrap; gap: 14px; }

/* ---------------- 合作机构 / 跑马灯 ---------------- */
.logos { display: flex; flex-wrap: wrap; align-items: center; gap: clamp(24px, 4vw, 56px); }
.logos__item {
  font-size: 1rem;
  color: var(--ink-3);
  letter-spacing: 0.02em;
  transition: color var(--dur-fast) var(--ease);
  display: inline-flex; align-items: center; gap: 8px;
}
.logos__item:hover { color: var(--ink); }

/* ---------------- EEG 波形装饰 ---------------- */
.eeg-line { width: 100%; height: auto; overflow: visible; }
.eeg-line path { fill: none; stroke-linecap: round; stroke-linejoin: round; }
.eeg-dash { stroke-dasharray: 1400; stroke-dashoffset: 1400; animation: eeg-draw 3.4s var(--ease-out) forwards; }
@keyframes eeg-draw { to { stroke-dashoffset: 0; } }

/* 外部 SVG 波形的「描线」揭示效果 */
.eeg-reveal {
  clip-path: inset(0 100% 0 0);
  animation: eeg-wipe 2.8s var(--ease-out) 0.35s forwards;
}
@keyframes eeg-wipe { to { clip-path: inset(0 -2% 0 0); } }
@media (prefers-reduced-motion: reduce) {
  .eeg-reveal { clip-path: none; animation: none; }
}

.band-labels { display: flex; gap: 18px; flex-wrap: wrap; font-size: 0.72rem; letter-spacing: 0.06em; }
.band-labels span { display: inline-flex; align-items: center; gap: 6px; color: var(--ink-3); }
.band-labels i { width: 8px; height: 8px; border-radius: 2px; display: inline-block; }

/* ---------------- 四象限模型 ---------------- */
.quadrant { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.quad {
  padding: 20px;
  border-radius: var(--r);
  border: 1px solid var(--line-soft);
  background: #fff;
  transition: transform var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);
}
.quad:hover { transform: translateY(-2px); box-shadow: var(--sh-2); }
.quad__tag { font-size: var(--fs-xs); font-weight: var(--fw-semibold); color: var(--accent, var(--brand)); letter-spacing: 0.08em; }
.quad h4 { font-size: 1.02rem; margin: 6px 0 8px; font-weight: var(--fw-semibold); }
.quad p { font-size: var(--fs-sm); color: var(--ink-2); line-height: 1.75; }
.quad--best { background: linear-gradient(140deg, rgba(15, 178, 157, 0.08), rgba(46, 124, 246, 0.06)); border-color: rgba(15, 178, 157, 0.28); }

/* ---------------- 规格表 ---------------- */
.spec-list { border-top: 1px solid var(--line-soft); }
.spec-list__row { display: grid; grid-template-columns: 190px 1fr; gap: 20px; padding: 16px 0; border-bottom: 1px solid var(--line-soft); }
.spec-list__k { font-size: var(--fs-sm); color: var(--ink-3); }
.spec-list__v { font-size: var(--fs-sm); color: var(--ink); }
@media (max-width: 560px) { .spec-list__row { grid-template-columns: 1fr; gap: 4px; } }

/* ---------------- 新闻卡 ---------------- */
.news-card { display: flex; flex-direction: column; gap: 14px; height: 100%; }
.news-card__date { font-size: var(--fs-xs); color: var(--ink-3); letter-spacing: 0.08em; }
.news-card h3 { font-size: 1.06rem; font-weight: var(--fw-semibold); line-height: 1.55; }
.news-card p { font-size: var(--fs-sm); color: var(--ink-2); flex: 1; }
.news-card a:hover h3 { color: var(--brand); }

/* ---------------- 产品详情区块（产品与方案页） ---------------- */
.product-block {
  position: relative;
  padding-block: clamp(56px, 7vw, 104px);
  border-top: 1px solid var(--line-soft);
}
.product-block:first-of-type { border-top: 0; }
.product-block:nth-of-type(even) { background: var(--bg-soft); }
.product-block::before {
  content: "";
  position: absolute; left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--accent, var(--brand));
  opacity: 0.85;
}
.product-block__en {
  display: block;
  font-size: 0.76rem;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-top: 8px;
}
.product-block__body h2 { font-weight: var(--fw-light); }
.product-block__desc p { font-size: var(--fs-sm); line-height: 1.95; }
.product-block .media-grid { margin-top: clamp(32px, 4vw, 52px); }
.product-block.is-flip .split > :first-child { order: 2; }
.product-block.is-flip .split > :last-child { order: 1; }
@media (max-width: 900px) {
  .product-block.is-flip .split > :first-child,
  .product-block.is-flip .split > :last-child { order: initial; }
  .product-block::before { width: 2px; }
}
.product-block .chip { text-transform: none; }

/* ---------------- 联系页信息卡 ---------------- */
.contact-card { display: flex; gap: 16px; align-items: flex-start; }
.contact-card__ico {
  width: 44px; height: 44px; flex: 0 0 auto;
  border-radius: var(--r-sm);
  display: grid; place-items: center;
  background: var(--accent-soft, rgba(26, 42, 170, 0.08));
  color: var(--accent, var(--brand));
}
.contact-card__ico svg { width: 21px; height: 21px; }
.contact-card h3 { font-size: 1rem; font-weight: var(--fw-semibold); margin-bottom: 4px; }
.contact-card a, .contact-card span { color: var(--ink-2); font-size: var(--fs-sm); }
.contact-card a:hover { color: var(--brand); }

/* ---------------- 关于我们：价值/历程 ---------------- */
.value-line { display: flex; gap: 18px; padding: 22px 0; border-bottom: 1px solid var(--line-soft); }
.value-line__no { font-size: 0.72rem; letter-spacing: 0.18em; color: var(--brand); font-weight: var(--fw-semibold); flex: 0 0 auto; padding-top: 4px; }
.value-line h3 { font-size: 1.05rem; margin-bottom: 6px; font-weight: var(--fw-semibold); }
.value-line p { font-size: var(--fs-sm); color: var(--ink-2); }

/* ---------------- 新闻列表卡（带封面） ---------------- */
.news-tile {
  display: flex;
  flex-direction: column;
  height: 100%;
  background: #fff;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: transform var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out), border-color var(--dur) var(--ease);
}
.news-tile:hover { transform: translateY(-6px); box-shadow: var(--sh-3); border-color: transparent; }
.news-tile__media { position: relative; aspect-ratio: 16 / 9; overflow: hidden; background: var(--panel-2); }
.news-tile__media img,
.news-tile__media picture { width: 100%; height: 100%; object-fit: cover; display: block; }
.news-tile__media img { transition: transform 0.9s var(--ease-out); }
.news-tile:hover .news-tile__media img { transform: scale(1.045); }
.news-tile__body { display: flex; flex-direction: column; gap: 10px; padding: 22px clamp(20px, 2vw, 26px) 26px; flex: 1; }
.news-tile__date { font-size: var(--fs-xs); color: var(--ink-3); letter-spacing: 0.08em; }
.news-tile h3 { font-size: 1.05rem; font-weight: var(--fw-semibold); line-height: 1.6; }
.news-tile p { font-size: var(--fs-sm); color: var(--ink-2); flex: 1; }
.news-tile:hover h3 { color: var(--brand); }

/* ---------------- 文章正文（新闻详情） ---------------- */
.article__title {
  font-size: clamp(1.55rem, 1.1rem + 1.7vw, 2.35rem);
  font-weight: var(--fw-light);
  line-height: 1.36;
  letter-spacing: -0.015em;
  margin-bottom: 18px;
}
.article__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  color: var(--ink-3);
  font-size: var(--fs-sm);
  padding-bottom: 24px;
  border-bottom: 1px solid var(--line-soft);
}
.article__cover { margin: 32px 0 4px; }
.article__body { font-size: 1.03rem; line-height: 2; color: var(--ink-2); margin-top: 28px; }
.article__body p { margin-top: 22px; }
.article__body p:first-child { margin-top: 0; }
.article__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 52px;
  padding-top: 28px;
  border-top: 1px solid var(--line-soft);
}
.article__related { margin-top: clamp(48px, 5vw, 72px); }

/* ============================================================
   满屏影像区块 .band —— 参考理想汽车官网的「大图 + 少字」节奏
   用法：
   <section class="band band--full band--left" data-band>
     <div class="band__media"><img src="..." alt=""></div>
     <div class="band__scrim"></div>
     <div class="container container--wide band__inner"> ... </div>
   </section>
   ============================================================ */
.band {
  position: relative;
  display: flex;
  align-items: center;
  min-height: clamp(520px, 76vh, 840px);
  color: var(--ink-inv);
  overflow: hidden;
  isolation: isolate;
}
.band--full { min-height: 100svh; }
.band--tall { min-height: clamp(600px, 88vh, 960px); }
.band--short { min-height: clamp(420px, 60vh, 660px); }
.band--flush { min-height: auto; padding-block: clamp(88px, 11vw, 168px); }

/* 背景图层 */
.band__media { position: absolute; inset: 0; z-index: -2; overflow: hidden; }
.band__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: translate3d(0, var(--band-shift, 0px), 0) scale(1.07);
  will-change: transform;
}
@media (prefers-reduced-motion: reduce) {
  .band__media img { transform: none; }
}

/* 遮罩：保证白色文字始终可读 */
.band__scrim { position: absolute; inset: 0; z-index: -1; pointer-events: none; }
.band--left .band__scrim {
  background:
    linear-gradient(90deg, rgba(6, 15, 32, 0.94) 0%, rgba(6, 15, 32, 0.78) 34%, rgba(6, 15, 32, 0.34) 64%, rgba(6, 15, 32, 0.1) 100%),
    linear-gradient(180deg, rgba(6, 15, 32, 0.55) 0%, transparent 26%, transparent 70%, rgba(6, 15, 32, 0.5) 100%);
}
.band--center .band__scrim {
  background:
    radial-gradient(130% 100% at 50% 42%, rgba(6, 15, 32, 0.42) 0%, rgba(6, 15, 32, 0.74) 62%, rgba(6, 15, 32, 0.9) 100%),
    linear-gradient(180deg, rgba(6, 15, 32, 0.5) 0%, transparent 24%);
}
.band--bottom .band__scrim {
  background:
    linear-gradient(180deg, rgba(6, 15, 32, 0.42) 0%, rgba(6, 15, 32, 0.5) 40%, rgba(6, 15, 32, 0.94) 100%);
}

/* 内容 */
.band__inner { position: relative; z-index: 1; width: 100%; padding-block: clamp(72px, 9vw, 128px); }
.band--center .band__inner { text-align: center; }
.band--center .band__desc { margin-inline: auto; }
.band--center .band__actions,
.band--center .band__facts { justify-content: center; }

.band__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 22px;
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.72);
}
.band__eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  border-radius: 2px;
  background: var(--grad-brand);
}

.band__title {
  max-width: 15em;
  margin: 0 0 22px;
  font-size: clamp(2.1rem, 1.25rem + 3.6vw, 4.3rem);
  font-weight: var(--fw-light);
  line-height: 1.13;
  letter-spacing: -0.032em;
  color: #fff;
}
.band__en {
  display: block;
  margin-top: -10px;
  margin-bottom: 22px;
  font-size: 0.76rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.48);
}
.band__desc {
  max-width: 44ch;
  color: rgba(255, 255, 255, 0.76);
  font-size: clamp(1rem, 0.95rem + 0.32vw, 1.16rem);
  line-height: 1.9;
}
.band__actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 36px; }

/* 底部关键指标 */
.band__facts {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(24px, 4vw, 60px);
  margin-top: clamp(36px, 4vw, 52px);
  padding-top: 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
}
.band__fact b {
  display: block;
  font-size: clamp(1.5rem, 1.05rem + 1.5vw, 2.3rem);
  font-weight: var(--fw-light);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: #fff;
  font-variant-numeric: tabular-nums;
}
.band__fact span { font-size: var(--fs-sm); color: rgba(255, 255, 255, 0.6); }

/* 深色区块里的浅色卡片（技术底座等） */
.band .card { color: var(--ink); }
.band .card h3 { color: var(--ink); }
.band .card p { color: var(--ink-2); }

/* 滚动提示 */
.band__scroll {
  position: absolute;
  left: 50%;
  bottom: 30px;
  z-index: 2;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-size: 0.66rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.5);
}
.band__scroll::after {
  content: "";
  width: 1px;
  height: 42px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.6), transparent);
  animation: band-scroll 2.2s var(--ease) infinite;
}
@keyframes band-scroll { 0% { opacity: 0; transform: scaleY(0.3); transform-origin: top; } 40% { opacity: 1; } 100% { opacity: 0; transform: scaleY(1); transform-origin: top; } }
@media (max-width: 820px) { .band__scroll { display: none; } }

/* 大图区块之间的浅色信息区（交替节奏） */
.band-follow { background: var(--bg); }

/* ---------------- 大图区块内的极简文本列 ---------------- */
.band .feature h3 { color: #fff; }
.band .feature p { color: rgba(255, 255, 255, 0.64); }
.band .feature__icon { background: rgba(255, 255, 255, 0.1); color: #fff; }
.band .pillar-hair { padding-left: 20px; border-left: 1px solid rgba(255, 255, 255, 0.16); }
.band .spec-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.band .spec-row span {
  padding: 6px 14px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--r-pill);
  font-size: var(--fs-xs);
  color: rgba(255, 255, 255, 0.82);
}

/* 浅色信息区里的小标题（承接大图区块） */
.subhead { max-width: 760px; margin-bottom: clamp(28px, 3vw, 44px); }
.subhead h2 { font-weight: var(--fw-light); margin-bottom: 14px; }
.subhead p { color: var(--ink-2); }
.band__media picture { display: block; width: 100%; height: 100%; }
/* 大图区块内的面包屑 */
.band .breadcrumb { color: rgba(255, 255, 255, 0.6); margin-bottom: 26px; }
.band .breadcrumb a:hover { color: #fff; }
.band .breadcrumb span { opacity: 0.5; }

/* 产品页筛选条（吸顶） */
.filter-bar {
  position: sticky;
  top: var(--header-h);
  z-index: 40;
  padding-block: 22px;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line-soft);
}

/* 产品大图区块下方的浅色信息区 */
.product-detail { padding-block: clamp(56px, 7vw, 104px); }
.product-detail + .product-detail { border-top: 1px solid var(--line-soft); }
.product-detail .media-grid { margin-top: clamp(28px, 3vw, 44px); }

/* 富文本段落（产品说明 / 正文） */
.rich p { margin-top: 18px; font-size: var(--fs-sm); line-height: 1.95; color: var(--ink-2); }
.rich p:first-child { margin-top: 0; }