/* ===== 浩瀚体育首页 · 海报式分层构图 ===== */
.page-home {
  --ph-orange: #FF6B00;
  --ph-gold: #F4B400;
  --ph-red: #E44D2E;
  --ph-cyan: #00B4D8;
  --ph-navy: #0A1931;
  --ph-deep: #0F1A2E;
  --ph-light: #F5F7FA;
  --ph-ink: #1C1E26;
  --ph-soft: #E5E9F0;
  --ph-dim: #93A1BB;
  --ph-border: rgba(128, 150, 190, 0.22);
  --ph-title: clamp(2.5rem, 7vw, 5rem);
  --ph-lead: clamp(1.25rem, 3vw, 2.05rem);
  background: var(--c-navy);
  color: var(--c-text-light);
  overflow-x: hidden;
}

/* ========== 首屏入口 ========== */
.page-home .ph-hero {
  position: relative;
  padding: 72px 0 96px;
  background: linear-gradient(140deg, #081226 0%, #0F1A2E 55%, #14213C 100%);
  overflow: hidden;
}
.page-home .ph-hero__media {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}
.page-home .ph-hero__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.5;
  transform: scale(1.04);
}
.page-home .ph-hero__shade {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(90deg, rgba(10, 25, 49, 0.94) 0%, rgba(10, 25, 49, 0.78) 46%, rgba(15, 26, 46, 0.42) 100%),
    linear-gradient(0deg, rgba(10, 25, 49, 0.82) 0%, rgba(10, 25, 49, 0.08) 62%);
}
.page-home .ph-hero__beam {
  position: absolute;
  z-index: 1;
  top: -14%;
  right: -6%;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 107, 0, 0.2) 0%, transparent 66%);
}
.page-home .ph-hero__inner {
  position: relative;
  z-index: 2;
  display: grid;
  gap: 40px;
}
.page-home .ph-hero__content {
  max-width: 760px;
}
.page-home .ph-hero__tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-data);
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  color: var(--ph-cyan);
  background: rgba(0, 180, 216, 0.08);
  border: 1px solid rgba(0, 180, 216, 0.32);
  border-radius: 999px;
  padding: 6px 12px;
  margin-bottom: 22px;
}
.page-home .ph-hero__tag i {
  font-style: normal;
  color: var(--ph-orange);
}
.page-home .ph-hero__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--ph-orange);
  box-shadow: 0 0 0 4px rgba(255, 107, 0, 0.16);
  animation: ph-pulse 2s var(--ease-out) infinite;
}
@keyframes ph-pulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(255, 107, 0, 0.14); }
  50% { box-shadow: 0 0 0 10px rgba(255, 107, 0, 0); }
}
.page-home .ph-hero__title {
  font-family: var(--font-heading);
  font-size: var(--ph-title);
  line-height: 1.06;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: #fff;
}
.page-home .ph-hero__title span {
  color: var(--ph-orange);
}
.page-home .ph-hero__lead {
  margin-top: 14px;
  font-size: var(--ph-lead);
  font-weight: 700;
  color: var(--ph-gold);
  line-height: 1.3;
}
.page-home .ph-hero__desc {
  margin-top: 18px;
  max-width: 42em;
  color: var(--ph-soft);
  font-size: 1rem;
  line-height: 1.75;
}
.page-home .ph-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}
.page-home .ph-hero__btn {
  padding: 13px 28px;
  font-size: 1rem;
  font-weight: 600;
}
.page-home .ph-hero__ptz {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
.page-home .ph-hero__ptz-card {
  position: relative;
  background: rgba(15, 26, 46, 0.72);
  border: 1px solid var(--ph-border);
  border-radius: 12px;
  padding: 16px 12px;
  overflow: hidden;
  backdrop-filter: blur(4px);
}
.page-home .ph-hero__ptz-card::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 3px;
  background: var(--ph-cyan);
}
.page-home .ph-hero__ptz-card--orange::after {
  background: var(--ph-orange);
}
.page-home .ph-hero__ptz-card--gold::after {
  background: var(--ph-gold);
}
.page-home .ph-hero__ptz-label {
  display: block;
  font-size: 0.76rem;
  color: var(--ph-dim);
  margin-bottom: 8px;
}
.page-home .ph-hero__ptz-value {
  display: block;
  font-family: var(--font-data);
  font-size: 1.55rem;
  font-weight: 800;
  color: var(--ph-soft);
  line-height: 1.1;
}
.page-home .ph-hero__ptz-caption {
  display: block;
  margin-top: 8px;
  font-size: 0.74rem;
  color: var(--ph-dim);
}
.page-home .ph-hero__toc {
  position: relative;
  z-index: 3;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-top: 40px;
}
.page-home .ph-hero__toc-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--ph-border);
  border-radius: 8px;
  color: var(--ph-soft);
  text-decoration: none;
  font-size: 0.86rem;
  transition: background 0.3s var(--ease-out), border-color 0.3s var(--ease-out), transform 0.3s var(--ease-out);
}
.page-home .ph-hero__toc-link:hover {
  background: rgba(255, 107, 0, 0.12);
  border-color: rgba(255, 107, 0, 0.5);
  transform: translateY(-2px);
}
.page-home .ph-hero__toc-num {
  font-family: var(--font-data);
  font-weight: 700;
  color: var(--ph-orange);
}
.page-home .ph-hero__btn:hover {
  transform: translateY(-2px);
}

/* ========== 关键词速度带 ========== */
.page-home .ph-ticker {
  position: relative;
  z-index: 3;
  background: linear-gradient(100deg, #D93C14 0%, #FF6B00 55%, #FF8A3D 100%);
  transform: rotate(-1.4deg) scale(1.01);
  margin: -6px 0 0;
  box-shadow: 0 14px 34px rgba(255, 107, 0, 0.22);
}
.page-home .ph-ticker__belt {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 18px 30px;
  padding: 12px 18px;
  color: #fff;
  font-size: 0.87rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.page-home .ph-ticker__belt span {
  white-space: nowrap;
}
.page-home .ph-ticker__belt span::before {
  content: "◆";
  margin-right: 8px;
  font-size: 0.62rem;
  color: rgba(255, 255, 255, 0.7);
}

/* ========== 01 V3面板数据中枢 ========== */
.page-home .ph-v3 {
  position: relative;
  padding: 96px 0 88px;
  background: var(--c-deep);
  overflow: hidden;
}
.page-home .ph-v3__pattern {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(180deg, transparent 0, #000 30%, #000 70%, transparent 100%);
}
.page-home .ph-v3__container {
  position: relative;
  z-index: 1;
}
.page-home .ph-v3__head {
  margin-bottom: 40px;
}
.page-home .ph-v3 .section-header__index {
  color: var(--ph-orange);
  font-size: 3rem;
}
.page-home .ph-v3 .section-header__title {
  color: #fff;
}
.page-home .ph-v3 .section-header__note {
  color: var(--ph-dim);
}
.page-home .ph-v3__grid {
  display: grid;
  gap: 36px;
}
.page-home .ph-v3__panel {
  display: grid;
  gap: 18px;
}
.page-home .ph-v3__card {
  position: relative;
  background: linear-gradient(140deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02)), #12223A;
  border: 1px solid var(--ph-border);
  border-radius: 14px;
  padding: 24px;
  overflow: hidden;
  transition: border-color 0.3s var(--ease-out), transform 0.3s var(--ease-out);
}
.page-home .ph-v3__card:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 107, 0, 0.5);
}
.page-home .ph-v3__card--live {
  border-left: 4px solid var(--ph-orange);
  background: linear-gradient(140deg, rgba(255, 107, 0, 0.1), transparent 46%), #12223A;
}
.page-home .ph-v3__card--dark {
  background: linear-gradient(140deg, rgba(0, 180, 216, 0.08), transparent 50%), #101D31;
}
.page-home .ph-v3__card-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}
.page-home .ph-v3__card-code {
  font-family: var(--font-data);
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  color: var(--ph-gold);
  background: rgba(244, 180, 0, 0.1);
  border: 1px solid rgba(244, 180, 0, 0.24);
  padding: 4px 10px;
  border-radius: 4px;
}
.page-home .ph-v3__svg {
  width: 52px;
  height: 52px;
}
.page-home .ph-v3__svg-track {
  stroke: rgba(255, 255, 255, 0.12);
}
.page-home .ph-v3__svg-pulse {
  stroke: var(--ph-orange);
  fill: none;
}
.page-home .ph-v3__svg-point {
  fill: var(--ph-gold);
}
.page-home .ph-v3__card-gold {
  fill: var(--ph-gold);
}
.page-home .ph-v3__card-red {
  fill: var(--ph-red);
}
.page-home .ph-v3__svg-line {
  stroke: var(--ph-orange);
  opacity: 0.55;
}
.page-home .ph-v3__svg-diamond {
  fill: none;
  stroke: var(--ph-cyan);
  stroke-width: 3;
}
.page-home .ph-v3__svg-check {
  stroke: var(--ph-cyan);
}
.page-home .ph-v3__tag {
  display: inline-block;
  font-family: var(--font-data);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: 4px 10px;
  border-radius: 3px;
  margin-bottom: 12px;
}
.page-home .ph-v3__tag--orange {
  color: #fff;
  background: var(--ph-orange);
}
.page-home .ph-v3__tag--gold {
  color: #2A1E00;
  background: var(--ph-gold);
}
.page-home .ph-v3__tag--cyan {
  color: #04262E;
  background: var(--ph-cyan);
}
.page-home .ph-v3__card-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 10px;
}
.page-home .ph-v3__card-text {
  font-size: 0.93rem;
  line-height: 1.72;
  color: var(--ph-soft);
  margin-bottom: 16px;
}
.page-home .ph-v3__card-link {
  color: var(--ph-orange);
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.page-home .ph-v3__card-link:hover {
  color: var(--ph-gold);
}
.page-home .ph-v3__side {
  display: grid;
  gap: 20px;
}
.page-home .ph-v3__frame {
  position: relative;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--ph-border);
}
.page-home .ph-v3__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 4 / 3;
}
.page-home .ph-v3__frame-tag {
  position: absolute;
  left: 12px;
  bottom: 12px;
  font-family: var(--font-data);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  padding: 5px 10px;
  border-radius: 3px;
  background: rgba(0, 180, 216, 0.9);
  color: #04262E;
}
.page-home .ph-v3__stats {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-home .ph-v3__stat {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--ph-border);
  border-radius: 10px;
  padding: 14px 16px;
}
.page-home .ph-v3__stat-num {
  font-family: var(--font-data);
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--ph-gold);
}
.page-home .ph-v3__stat-text {
  font-size: 0.86rem;
  color: var(--ph-soft);
}
.page-home .ph-v3__update {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: linear-gradient(120deg, rgba(255, 107, 0, 0.14), transparent 70%);
  border: 1px solid rgba(255, 107, 0, 0.34);
  border-radius: 10px;
  padding: 14px 16px;
}
.page-home .ph-v3__update-label {
  font-size: 0.84rem;
  color: var(--ph-soft);
}
.page-home .ph-v3__update-value {
  font-family: var(--font-data);
  font-weight: 700;
  color: var(--ph-orange);
  font-size: 1rem;
}

/* ========== 02 赛事结束还能查 ========== */
.page-home .ph-post {
  background: var(--c-light);
  color: var(--c-ink);
  padding: 96px 0 88px;
  position: relative;
}
.page-home .ph-post__head {
  margin-bottom: 44px;
}
.page-home .ph-post .section-header__index {
  color: var(--ph-red);
  font-size: 3rem;
}
.page-home .ph-post .section-header__title {
  color: var(--c-ink);
}
.page-home .ph-post .section-header__note {
  color: #5A6678;
}
.page-home .ph-post__grid {
  display: grid;
  gap: 36px;
}
.page-home .ph-post__visual {
  position: relative;
}
.page-home .ph-post__imgwrap {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(10, 25, 49, 0.18);
}
.page-home .ph-post__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}
.page-home .ph-post__stamp {
  position: absolute;
  top: -12px;
  right: 18px;
  background: var(--ph-red);
  color: #fff;
  font-family: var(--font-data);
  font-weight: 800;
  font-size: 0.82rem;
  line-height: 1.2;
  padding: 10px 14px;
  border-radius: 6px;
  transform: rotate(5deg);
  box-shadow: 0 12px 28px rgba(228, 77, 46, 0.4);
  letter-spacing: 0.06em;
  text-align: center;
}
.page-home .ph-post__content {
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.page-home .ph-post__intro {
  font-size: 1.08rem;
  line-height: 1.75;
  color: var(--c-ink);
  margin-bottom: 24px;
  font-weight: 500;
}
.page-home .ph-post__list {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: grid;
  gap: 16px;
}
.page-home .ph-post__list-item {
  display: flex;
  gap: 14px;
  background: #fff;
  border: 1px solid #E2E8F0;
  border-radius: 12px;
  padding: 16px;
}
.page-home .ph-post__badge {
  flex: 0 0 auto;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  margin-top: 6px;
  background: var(--ph-cyan);
}
.page-home .ph-post__badge--gold {
  background: var(--ph-gold);
}
.page-home .ph-post__badge--orange {
  background: var(--ph-orange);
}
.page-home .ph-post__list-item strong {
  display: block;
  font-size: 0.98rem;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--c-ink);
}
.page-home .ph-post__list-item p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.65;
  color: #4E5A6D;
}
.page-home .ph-post__link {
  display: inline-block;
  color: var(--ph-red);
  font-weight: 600;
  text-decoration: none;
  font-size: 0.92rem;
}
.page-home .ph-post__link:hover {
  color: var(--ph-orange);
}

/* ========== 03 多场连看不卡顿 ========== */
.page-home .ph-multi {
  position: relative;
  padding: 96px 0 72px;
  background: var(--c-navy);
  overflow: hidden;
}
.page-home .ph-multi__strip {
  position: absolute;
  top: 0;
  right: -10%;
  width: 640px;
  height: 64px;
  background: linear-gradient(110deg, transparent 0%, rgba(255, 107, 0, 0.32) 30%, rgba(244, 180, 0, 0.28) 70%, transparent 100%);
  transform: rotate(-12deg);
  transform-origin: center;
}
.page-home .ph-multi__container {
  position: relative;
  z-index: 1;
}
.page-home .ph-multi__head {
  margin-bottom: 44px;
}
.page-home .ph-multi .section-header__index {
  color: var(--ph-gold);
  font-size: 3rem;
}
.page-home .ph-multi .section-header__title {
  color: #fff;
}
.page-home .ph-multi .section-header__note {
  color: var(--ph-dim);
}
.page-home .ph-multi__grid {
  display: grid;
  gap: 40px;
}
.page-home .ph-multi__content {
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.page-home .ph-multi__intro {
  font-size: 1.06rem;
  line-height: 1.75;
  color: var(--ph-soft);
  margin-bottom: 26px;
}
.page-home .ph-multi__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}
.page-home .ph-multi__list-item {
  display: flex;
  gap: 14px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--ph-border);
  border-radius: 12px;
  padding: 16px;
  transition: border-color 0.3s var(--ease-out), background 0.3s var(--ease-out);
}
.page-home .ph-multi__list-item:hover {
  border-color: rgba(255, 107, 0, 0.42);
  background: rgba(255, 107, 0, 0.06);
}
.page-home .ph-multi__chip {
  flex: 0 0 auto;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--ph-orange);
  color: #fff;
  font-family: var(--font-data);
  font-size: 0.82rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 16px rgba(255, 107, 0, 0.3);
}
.page-home .ph-multi__list-item strong {
  display: block;
  font-size: 0.98rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 4px;
}
.page-home .ph-multi__list-item p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--ph-dim);
}
.page-home .ph-multi__visual {
  position: relative;
}
.page-home .ph-multi__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 16px;
  border: 1px solid var(--ph-border);
}
.page-home .ph-multi__screen {
  position: absolute;
  left: 16px;
  bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(10, 25, 49, 0.88);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 10px;
  padding: 10px 14px;
  backdrop-filter: blur(4px);
}
.page-home .ph-multi__screen-bar {
  display: flex;
  gap: 4px;
  margin-right: 4px;
}
.page-home .ph-multi__screen-bar i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ph-gold);
}
.page-home .ph-multi__screen-bar i:nth-child(2) {
  background: var(--ph-orange);
}
.page-home .ph-multi__screen-bar i:nth-child(3) {
  background: var(--ph-cyan);
}
.page-home .ph-multi__screen-score {
  font-family: var(--font-data);
  font-weight: 800;
  font-size: 0.88rem;
  color: var(--ph-soft);
  letter-spacing: 0.06em;
}
.page-home .ph-multi__screen-note {
  font-size: 0.72rem;
  color: var(--ph-gold);
  border: 1px solid rgba(244, 180, 0, 0.5);
  border-radius: 4px;
  padding: 2px 6px;
}
.page-home .ph-multi__trust {
  margin-top: 52px;
  display: flex;
  align-items: center;
  gap: 20px;
  background: linear-gradient(120deg, rgba(255, 107, 0, 0.12), rgba(255, 107, 0, 0.03) 70%);
  border: 1px solid rgba(255, 107, 0, 0.28);
  border-radius: 14px;
  padding: 22px 24px;
}
.page-home .ph-multi__trust-num {
  font-family: var(--font-data);
  font-size: 2rem;
  font-weight: 800;
  color: var(--ph-orange);
  white-space: nowrap;
}
.page-home .ph-multi__trust p {
  margin: 0;
  color: var(--ph-soft);
  font-size: 0.92rem;
  line-height: 1.65;
}

/* ========== 信任数据条 ========== */
.page-home .ph-trust {
  background: linear-gradient(95deg, #D93C14 0%, #FF6B00 55%, #FF8A3D 100%);
  padding: 28px 0;
  color: #fff;
}
.page-home .ph-trust__inner {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px 20px;
}
.page-home .ph-trust__item {
  text-align: center;
}
.page-home .ph-trust__num {
  display: block;
  font-family: var(--font-data);
  font-size: 1.75rem;
  font-weight: 800;
  line-height: 1.1;
}
.page-home .ph-trust__label {
  display: block;
  margin-top: 4px;
  font-size: 0.78rem;
  opacity: 0.88;
}

/* ========== 出口 CTA ========== */
.page-home .ph-cta {
  position: relative;
  padding: 88px 0 96px;
  background: var(--c-navy);
  overflow: hidden;
}
.page-home .ph-cta::before {
  content: "";
  position: absolute;
  left: -80px;
  bottom: -120px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 107, 0, 0.22), transparent 68%);
  pointer-events: none;
}
.page-home .ph-cta__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 44px;
}
.page-home .ph-cta__title {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 4.6vw, 3rem);
  font-weight: 900;
  color: #fff;
  margin-bottom: 16px;
}
.page-home .ph-cta__text {
  max-width: 34em;
  color: var(--ph-soft);
  line-height: 1.75;
}
.page-home .ph-cta__nav {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}
.page-home .ph-cta__link {
  display: block;
  padding: 16px 18px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--ph-border);
  border-radius: 10px;
  color: var(--ph-soft);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 600;
  transition: border-color 0.3s var(--ease-out), color 0.3s var(--ease-out), background 0.3s var(--ease-out);
}
.page-home .ph-cta__link:hover {
  border-color: rgba(255, 107, 0, 0.5);
  color: var(--ph-orange);
  background: rgba(255, 107, 0, 0.07);
}

/* ========== 返回顶部 ========== */
.page-home .ph-backtop {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 60;
  width: 46px;
  height: 46px;
  border: none;
  border-radius: 10px;
  background: var(--ph-orange);
  color: #fff;
  font-size: 1.2rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 10px 26px rgba(255, 107, 0, 0.34);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity 0.3s var(--ease-out), transform 0.3s var(--ease-out), visibility 0.3s;
}
.page-home .ph-backtop.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.page-home .ph-backtop:hover {
  background: var(--ph-gold);
  color: #2A1E00;
}

/* ========== 响应式增强 ========== */
@media (min-width: 768px) {
  .page-home .ph-hero {
    padding: 96px 0 110px;
  }
  .page-home .ph-hero__inner {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
    align-items: end;
  }
  .page-home .ph-hero__ptz {
    grid-template-columns: 1fr;
  }
  .page-home .ph-hero__toc {
    margin-top: 56px;
  }
  .page-home .ph-v3__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 28px;
  }
  .page-home .ph-post__grid {
    grid-template-columns: 0.9fr 1.1fr;
    gap: 48px;
    align-items: center;
  }
  .page-home .ph-post__visual {
    order: 1;
  }
  .page-home .ph-multi__grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 48px;
    align-items: center;
  }
  .page-home .ph-cta__inner {
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 48px;
  }
  .page-home .ph-trust__inner {
    grid-template-columns: repeat(5, 1fr);
    gap: 8px;
  }
}

@media (min-width: 1200px) {
  .page-home .ph-hero {
    min-height: calc(100vh - var(--header-total));
    display: flex;
    align-items: center;
  }
  .page-home .ph-hero__inner {
    align-items: center;
  }
  .page-home .ph-hero__toc-link {
    font-size: 0.95rem;
  }
  .page-home .ph-v3__grid {
    gap: 44px;
  }
  .page-home .ph-post__grid {
    gap: 72px;
  }
  .page-home .ph-multi__grid {
    gap: 72px;
  }
}