/* =====================================================================
   AI 依搭官网 · 页面样式
   包含：首页各区块、产品页、解决方案页、案例页、价格页、
        关于我们、试用表单页、合规页
   ===================================================================== */

/* ============================== 首页 Hero ============================== */
.hero {
  position: relative;
  padding: calc(var(--header-h) + clamp(44px, 6vw, 82px)) 0 var(--section-y);
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -160px;
  right: -120px;
  width: 620px;
  height: 620px;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(192, 86, 62, 0.1),
    rgba(192, 86, 62, 0) 66%
  );
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.02fr 0.98fr;
  gap: clamp(40px, 6vw, 84px);
  align-items: center;
}

.hero h1 {
  margin-bottom: 24px;
  font-size: clamp(42px, 5.4vw, 74px);
  line-height: 1.12;
  letter-spacing: -0.02em;
}

.hero h1 em {
  position: relative;
  z-index: 0;
  color: var(--c-accent);
  font-style: normal;
  white-space: nowrap;
}

.hero h1 em::after {
  content: "";
  position: absolute;
  left: -2%;
  right: -2%;
  bottom: 0.05em;
  z-index: -1;
  height: 0.2em;
  background: var(--c-accent-soft);
}

.hero__lead {
  max-width: 540px;
  font-size: 17.5px;
  line-height: 1.9;
  color: var(--c-sub);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin-top: 40px;
  padding-top: 26px;
  border-top: 1px solid var(--c-line);
}

.hero__meta span {
  position: relative;
  padding-left: 14px;
  font-size: 12.5px;
  color: var(--c-sub);
}

.hero__meta span::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--c-accent);
  transform: translateY(-50%);
}

.hero-visual {
  position: relative;
}

.hero-visual::before {
  content: "";
  position: absolute;
  inset: -14px;
  border: 1px dashed var(--c-line-strong);
  border-radius: calc(var(--radius-lg) + 12px);
  pointer-events: none;
}

.hero-visual__badge {
  position: absolute;
  top: -18px;
  right: 22px;
  z-index: 8;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-pill);
  background: var(--c-surface);
  box-shadow: var(--shadow-md);
  font-size: 12px;
  font-weight: 600;
  color: var(--c-ink-2);
}

.hero-visual__badge::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-accent);
  animation: pulse 2.4s infinite;
}

@keyframes pulse {
  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(192, 86, 62, 0.45);
  }
  50% {
    box-shadow: 0 0 0 6px rgba(192, 86, 62, 0);
  }
}

/* ============================== 数据条 ============================== */
.stats {
  background: rgba(255, 255, 255, 0.4);
  border-block: 1px solid var(--c-line);
}

.stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.stat {
  padding: 30px clamp(16px, 3vw, 36px);
  border-right: 1px solid var(--c-line);
}

.stat:last-child {
  border-right: 0;
}

.stat b {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-display);
  font-size: clamp(28px, 3vw, 38px);
  font-weight: 600;
  line-height: 1.1;
}

.stat b span {
  color: var(--c-accent);
}

.stat p {
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--c-sub);
}

/* ============================== 痛点 ============================== */
.pain {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(36px, 6vw, 80px);
  align-items: start;
}

.pain .section-head {
  position: sticky;
  top: calc(var(--header-h) + 32px);
  margin-bottom: 0;
}

.pain-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.pain-item {
  padding: 28px 24px;
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius-md);
  transition: border-color 0.3s, transform 0.3s var(--ease);
}

.pain-item:hover {
  transform: translateY(-3px);
  border-color: var(--c-line-strong);
}

.pain-item b {
  display: block;
  margin-bottom: 18px;
  font-family: var(--font-display);
  font-size: 30px;
  font-weight: 600;
  line-height: 1;
  color: var(--c-line-strong);
}

.pain-item h3 {
  margin-bottom: 8px;
  font-size: 17px;
  line-height: 1.5;
}

.pain-item p {
  font-size: 13px;
  line-height: 1.75;
  color: var(--c-sub);
}

/* ============================== 能力卡片 ============================== */
.cap-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.cap-card {
  display: flex;
  flex-direction: column;
  padding: 30px 28px;
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform 0.35s var(--ease), box-shadow 0.35s,
    border-color 0.35s;
}

.cap-card:hover {
  transform: translateY(-5px);
  border-color: var(--c-line-strong);
  box-shadow: var(--shadow-md);
}

.cap-card__icon {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  margin-bottom: 22px;
  border-radius: 13px;
  background: var(--c-accent-soft);
  color: var(--c-accent);
}

.cap-card h3 {
  margin-bottom: 10px;
  font-size: 21px;
}

.cap-card p {
  flex: 1;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-sub);
}

.cap-card .link-arrow {
  margin-top: 20px;
}

/* ============================== 流程 ============================== */
.workflow {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.workflow__item {
  position: relative;
  padding-right: 30px;
}

.workflow__item:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 23px;
  left: 62px;
  right: 6px;
  border-top: 1px dashed var(--c-line-strong);
}

.workflow__num {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  margin-bottom: 22px;
  border: 1px solid var(--c-line-strong);
  border-radius: 50%;
  background: var(--c-bg);
  color: var(--c-accent);
  font-size: 13px;
  font-weight: 600;
  transition: all 0.3s var(--ease);
}

.workflow__item:hover .workflow__num {
  color: #fff;
  background: var(--c-accent);
  border-color: var(--c-accent);
}

.workflow__item h3 {
  margin-bottom: 8px;
  font-size: 19px;
}

.workflow__item p {
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--c-sub);
}

/* ============================== 在线体验（深色） ============================== */
.demo {
  position: relative;
  overflow: hidden;
  padding-block: var(--section-y);
  color: var(--c-bg);
  background: var(--c-dark);
}

.demo::before {
  content: "";
  position: absolute;
  top: -140px;
  left: -120px;
  width: 560px;
  height: 560px;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(192, 86, 62, 0.26),
    rgba(192, 86, 62, 0) 68%
  );
  pointer-events: none;
}

.demo__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 0.8fr;
  gap: clamp(40px, 7vw, 100px);
  align-items: center;
}

.demo .eyebrow {
  color: #d99a89;
}

.demo h2 {
  margin-bottom: 20px;
  color: var(--c-bg);
  font-size: clamp(32px, 4.2vw, 50px);
  line-height: 1.22;
}

.demo__lead {
  max-width: 520px;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--c-dark-sub);
}

.demo-list {
  display: grid;
  gap: 14px;
  margin: 28px 0 32px;
}

.demo-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(247, 243, 236, 0.86);
}

.demo-list li::before {
  content: "✓";
  display: grid;
  place-items: center;
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  margin-top: 2px;
  border-radius: 50%;
  background: rgba(192, 86, 62, 0.2);
  color: #e0a291;
  font-size: 10px;
  font-weight: 700;
}

.demo__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}

.demo__hint {
  font-size: 11.5px;
  color: var(--c-dark-sub);
}

.demo__visual {
  position: relative;
}

.demo__float {
  position: absolute;
  top: 13%;
  left: -26px;
  z-index: 4;
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 12px 16px;
  border-radius: 12px;
  background: var(--c-surface);
  color: var(--c-ink);
  box-shadow: var(--shadow-lg);
  font-size: 12px;
  font-weight: 600;
}

.demo__float span {
  color: var(--c-success);
}

/* ============================== 场景方案 ============================== */
.scenario {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  transition: transform 0.35s var(--ease), box-shadow 0.35s,
    border-color 0.35s;
}

.scenario:hover {
  transform: translateY(-5px);
  border-color: var(--c-line-strong);
  box-shadow: var(--shadow-md);
}

.scenario__media {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: #e8e0d2;
}

.scenario__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s var(--ease);
}

.scenario:hover .scenario__media img {
  transform: scale(1.045);
}

.scenario__body {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 26px 26px 30px;
}

.scenario h3 {
  margin: 14px 0 8px;
  font-size: 22px;
}

.scenario p {
  flex: 1;
  font-size: 13.8px;
  line-height: 1.8;
  color: var(--c-sub);
}

.scenario .link-arrow {
  margin-top: 20px;
}

/* ============================== 案例 ============================== */
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.case-card {
  display: block;
}

.case-card__media {
  position: relative;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  border-radius: var(--radius-md);
  background: #e8e0d2;
}

.case-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s var(--ease);
}

.case-card:hover .case-card__media img {
  transform: scale(1.04);
}

.case-card__badge {
  position: absolute;
  top: 14px;
  left: 14px;
  padding: 5px 11px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.9);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  color: var(--c-ink-2);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.case-card__body {
  padding: 20px 2px 0;
}

.case-card__body h3 {
  margin-bottom: 7px;
  font-size: 19px;
}

.case-card__body p {
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--c-sub);
}

.case-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.case-note {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-top: 32px;
  padding: 14px 18px;
  border: 1px dashed var(--c-line-strong);
  border-radius: var(--radius-sm);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--c-sub);
}

.case-note::before {
  content: "i";
  display: grid;
  place-items: center;
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  margin-top: 1px;
  border-radius: 50%;
  background: var(--c-accent-soft);
  color: var(--c-accent);
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
}

/* ============================== 首页价格 / FAQ ============================== */
.faq-layout {
  display: grid;
  grid-template-columns: 0.72fr 1.28fr;
  gap: clamp(36px, 6vw, 80px);
  align-items: start;
}

.faq-layout .section-head {
  position: sticky;
  top: calc(var(--header-h) + 32px);
  margin-bottom: 0;
}

/* ============================== 产品页 ============================== */
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(36px, 6vw, 80px);
  align-items: center;
  padding-block: clamp(48px, 6vw, 78px);
  border-bottom: 1px solid var(--c-line);
}

.feature-row:first-of-type {
  border-top: 1px solid var(--c-line);
}

.feature-row[id],
.solution[id] {
  scroll-margin-top: calc(var(--header-h) + 76px);
}

.feature-row--reverse .feature-row__media {
  order: 2;
}

.feature-row__media {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: #e8e0d2;
  box-shadow: var(--shadow-md);
}

.feature-row__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.feature-row__media .tag {
  position: absolute;
  top: 16px;
  left: 16px;
}

.feature-row__body .eyebrow {
  margin-bottom: 14px;
}

.feature-row__body h2 {
  margin-bottom: 16px;
  font-size: clamp(28px, 3.4vw, 40px);
  line-height: 1.3;
}

.feature-row__body > p {
  margin-bottom: 20px;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--c-sub);
}

.feature-list {
  display: grid;
  gap: 10px;
  margin-bottom: 24px;
}

.feature-list li {
  position: relative;
  padding-left: 22px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-ink-2);
}

.feature-list li::before {
  content: "";
  position: absolute;
  top: 0.65em;
  left: 0;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-accent);
}

/* ============================== 解决方案页 ============================== */
.solution {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(36px, 6vw, 80px);
  align-items: center;
  padding-block: clamp(48px, 6vw, 80px);
  border-bottom: 1px solid var(--c-line);
}

.solution:first-of-type {
  border-top: 1px solid var(--c-line);
}

.solution:nth-child(even) .solution__media {
  order: 2;
}

.solution__media {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: #e8e0d2;
  box-shadow: var(--shadow-md);
}

.solution__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.solution__body h2 {
  margin-bottom: 14px;
  font-size: clamp(28px, 3.2vw, 38px);
  line-height: 1.3;
}

.solution__body > p {
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-sub);
}

.solution__meta {
  display: grid;
  gap: 14px;
  margin: 24px 0 26px;
  padding-top: 22px;
  border-top: 1px solid var(--c-line);
}

.solution__meta dd {
  margin: 0;
}

.solution__meta > div {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 12px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--c-ink-2);
}

.solution__meta dt {
  font-size: 11.5px;
  color: var(--c-muted);
  letter-spacing: 0.06em;
}

/* ============================== 案例页 ============================== */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 36px;
}

.filter-btn {
  padding: 9px 18px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--c-sub);
  font-size: 13px;
  transition: all 0.25s var(--ease);
}

.filter-btn:hover {
  border-color: var(--c-ink);
  color: var(--c-ink);
}

.filter-btn.is-active {
  border-color: var(--c-ink);
  background: var(--c-ink);
  color: var(--c-bg);
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(20px, 2.6vw, 32px);
}

.cases-grid .case-card.is-hidden {
  display: none;
}

/* ============================== 价格页 ============================== */
.billing-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-bottom: clamp(40px, 5vw, 64px);
}

.billing-step {
  padding: 24px 26px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-md);
  background: var(--c-surface);
}

.billing-step b {
  display: block;
  margin-bottom: 8px;
  font-size: 15px;
}

.billing-step p {
  font-size: 13px;
  line-height: 1.75;
  color: var(--c-sub);
}

.billing-step span {
  display: inline-grid;
  place-items: center;
  width: 26px;
  height: 26px;
  margin-bottom: 14px;
  border-radius: 50%;
  background: var(--c-accent-soft);
  color: var(--c-accent);
  font-size: 11px;
  font-weight: 600;
}

.price-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  align-items: stretch;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-md);
  background: var(--c-surface);
}

.compare-table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
  font-size: 13.5px;
}

.compare-table th,
.compare-table td {
  padding: 15px 20px;
  text-align: left;
  border-bottom: 1px solid var(--c-line);
}

.compare-table thead th {
  background: var(--c-bg);
  font-size: 13px;
  font-weight: 600;
  color: var(--c-ink);
}

.compare-table tbody th {
  font-weight: 500;
  color: var(--c-ink-2);
}

.compare-table td {
  color: var(--c-sub);
}

.compare-table tr:last-child th,
.compare-table tr:last-child td {
  border-bottom: 0;
}

.compare-table .is-highlight {
  background: rgba(244, 229, 222, 0.5);
}

/* ============================== 关于我们 ============================== */
.about-story {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(36px, 6vw, 80px);
  align-items: center;
}

.about-media {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: #e8e0d2;
  box-shadow: var(--shadow-md);
}

.about-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about-story h2 {
  margin-bottom: 20px;
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.28;
}

.about-story p {
  margin-bottom: 16px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--c-sub);
}

.about-wide {
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: var(--c-bg-deep);
}

.about-wide img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.about-wide figcaption {
  padding: 14px 20px;
  border-top: 1px solid var(--c-line);
  font-size: 12.5px;
  color: var(--c-muted);
}

.value-card {
  padding: 30px 28px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-md);
  background: var(--c-surface);
}

.value-card b {
  display: block;
  margin-bottom: 14px;
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 600;
  color: var(--c-accent);
}

.value-card h3 {
  margin-bottom: 10px;
  font-size: 18px;
}

.value-card p {
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--c-sub);
}

.timeline {
  position: relative;
  display: grid;
  gap: 30px;
  padding-left: 30px;
  border-left: 1px solid var(--c-line-strong);
}

.timeline__item {
  position: relative;
}

.timeline__item::before {
  content: "";
  position: absolute;
  top: 8px;
  left: -36px;
  width: 11px;
  height: 11px;
  border: 2px solid var(--c-bg);
  border-radius: 50%;
  background: var(--c-accent);
  box-shadow: 0 0 0 1px var(--c-accent);
}

.timeline__item time {
  display: block;
  margin-bottom: 6px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--c-accent);
}

.timeline__item h3 {
  margin-bottom: 6px;
  font-size: 18px;
}

.timeline__item p {
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--c-sub);
}

.contact-card {
  padding: 32px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--c-line);
  background: var(--c-surface);
  box-shadow: var(--shadow-sm);
}

.contact-card h3 {
  margin-bottom: 18px;
  font-size: 20px;
}

.contact-list {
  display: grid;
  gap: 14px;
  margin: 0;
}

.contact-list > div {
  display: grid;
  grid-template-columns: 70px 1fr;
  gap: 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--c-line);
  font-size: 13.5px;
  line-height: 1.7;
}

.contact-list > div:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.contact-list dt {
  font-size: 12px;
  color: var(--c-muted);
}

.contact-list dd {
  margin: 0;
  color: var(--c-ink-2);
}

/* ============================== 试用页 ============================== */
.trial-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(36px, 6vw, 72px);
  align-items: start;
}

.trial-benefits {
  display: grid;
  gap: 18px;
  margin: 30px 0;
}

.trial-benefits li {
  display: flex;
  gap: 14px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-sub);
}

.trial-benefits li b {
  display: block;
  margin-bottom: 2px;
  font-size: 14.5px;
  color: var(--c-ink);
}

.trial-benefits__num {
  display: grid;
  place-items: center;
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  margin-top: 1px;
  border-radius: 50%;
  background: var(--c-accent-soft);
  color: var(--c-accent);
  font-size: 11px;
  font-weight: 600;
}

.trial-contact {
  display: grid;
  gap: 10px;
  padding: 22px 24px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-md);
  background: var(--c-bg-deep);
  font-size: 13.5px;
  color: var(--c-sub);
}

.trial-contact a {
  color: var(--c-ink-2);
}

.trial-contact a:hover {
  color: var(--c-accent);
}

.trial-photo {
  margin: 0 0 24px;
  overflow: hidden;
  border-radius: var(--radius-md);
  background: var(--c-bg-deep);
  box-shadow: var(--shadow-sm);
}

.trial-photo img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.trial-photo figcaption {
  padding: 12px 16px;
  border-top: 1px solid var(--c-line);
  font-size: 12.5px;
  color: var(--c-muted);
}

/* ============================== 合规页 ============================== */
.legal-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: clamp(36px, 6vw, 72px);
  align-items: start;
}

.legal-toc {
  position: sticky;
  top: calc(var(--header-h) + 28px);
  display: grid;
  gap: 10px;
  padding: 22px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-md);
  background: var(--c-surface);
  font-size: 13px;
  color: var(--c-sub);
}

.legal-toc a:hover {
  color: var(--c-accent);
}

.legal-toc a.is-active {
  color: var(--c-accent);
  font-weight: 600;
}

.prose {
  max-width: 800px;
}

.prose h2 {
  margin: 44px 0 14px;
  font-size: 27px;
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.prose h2:first-child {
  margin-top: 0;
}

.prose h3 {
  margin: 26px 0 8px;
  font-size: 17px;
}

.prose p,
.prose li {
  margin-bottom: 12px;
  font-size: 14.5px;
  line-height: 1.95;
  color: var(--c-sub);
}

.prose ul {
  padding-left: 20px;
  list-style: disc;
}

.prose ul li::marker {
  color: var(--c-accent);
}

.notice {
  padding: 16px 20px;
  margin-bottom: 28px;
  border: 1px dashed var(--c-line-strong);
  border-radius: var(--radius-sm);
  background: var(--c-bg);
  font-size: 13px;
  line-height: 1.8;
  color: var(--c-sub);
}

/* ============================== 响应式 ============================== */
@media (max-width: 1080px) {
  .hero .container {
    grid-template-columns: 1fr;
    gap: 56px;
  }

  .hero__lead {
    max-width: 640px;
  }

  .hero-visual {
    max-width: 560px;
  }

  .pain,
  .faq-layout {
    grid-template-columns: 1fr;
  }

  .pain .section-head,
  .faq-layout .section-head {
    position: static;
    margin-bottom: 32px;
  }

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

  .workflow {
    grid-template-columns: repeat(2, 1fr);
    gap: 36px 0;
  }

  .workflow__item:nth-child(2)::after {
    display: none;
  }

  .demo__grid {
    grid-template-columns: 1fr;
    gap: 52px;
  }

  .demo__visual {
    max-width: 400px;
    margin-inline: auto;
  }

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

  .feature-row,
  .solution,
  .about-story {
    gap: 40px;
  }

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

  .legal-layout {
    grid-template-columns: 1fr;
  }

  .legal-toc {
    position: static;
    display: flex;
    flex-wrap: wrap;
    gap: 8px 18px;
  }
}

@media (max-width: 960px) {
  .stats__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .stat:nth-child(2) {
    border-right: 0;
  }

  .stat:nth-child(1),
  .stat:nth-child(2) {
    border-bottom: 1px solid var(--c-line);
  }

  .feature-row,
  .solution,
  .about-story {
    grid-template-columns: 1fr;
  }

  .feature-row--reverse .feature-row__media,
  .solution:nth-child(even) .solution__media {
    order: 0;
  }

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

  .price-card__desc {
    min-height: 0;
  }
}

@media (max-width: 720px) {
  .hero__meta {
    gap: 8px 18px;
  }

  .pain-list,
  .cap-grid,
  .workflow {
    grid-template-columns: 1fr;
  }

  .workflow__item {
    padding-right: 0;
  }

  .workflow__item::after {
    display: none;
  }

  .case-grid,
  .cases-grid {
    grid-template-columns: 1fr;
  }

  .demo__float {
    left: -8px;
  }

  .phone {
    width: min(280px, 100%);
  }

  .cases-grid {
    gap: 28px;
  }

  .about-media,
  .feature-row__media,
  .solution__media {
    aspect-ratio: 16 / 11;
  }
}

@media (max-width: 480px) {
  .hero__actions .btn {
    flex: 1;
  }

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

  .stat {
    border-right: 0;
    border-bottom: 1px solid var(--c-line);
  }

  .stat:last-child {
    border-bottom: 0;
  }

  .demo__float {
    display: none;
  }
}