@font-face {
  font-family: "Archivo Black Local";
  src:
    local("ArchivoBlack-Regular"),
    local("Archivo Black"),
    url("./font/ArchivoBlack-Regular.otf") format("opentype"),
    url("./font/ArchivoBlack-Regular.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

img {
  max-width: 100%;
  height: auto;
}

body {
  margin: 0;
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC",
    "Microsoft YaHei", sans-serif;
  color: #0f172a;
  background: #ffffff;
  overflow-x: hidden;
}

body.menu-open {
  overflow: hidden;
}

/* 全站内容区最大宽度 1200px；与区块类并列使用，如 class="container section-two" */
.container {
  width: min(1200px, calc(100% - 240px));
  margin: 0 auto;
}
/* 导航栏 */
.navbar {
  position: sticky;
  top: 16px;
  display: flex;
  margin: 0 auto;
  z-index: 100;
  height: 100%;
  width: 100%;
  display: flex;
  align-items: center;
  width: min(1200px, calc(100% - 48px));
  height: 48px;
  padding: 0 24px 0 24px;
  border-radius: 200px;
  border: 1px solid transparent;
  transition:
    border-color 0.22s ease,
    background 0.22s ease,
    box-shadow 0.22s ease,
    backdrop-filter 0.22s ease;
}

.navbar.navbar--scrolled {
  border-radius: 200px;
  border: 1px solid transparent;
  border-color: #e5e7eb;
  background: rgba(255, 255, 255, 0.3);
  box-shadow: 0 12px 32px 0 rgba(0, 0, 0, 0.05);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

/* 菜单列表 */
.menu-wrap {
  margin-left: auto;
}

.brand svg {
  display: block;
}

.menu {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 16px;
  align-items: center;
}

.menu a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  color: #0f172a;
  padding: 0.4rem 0.5rem;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
}

.menu a:hover {
  color: #ff4d00;
  background: rgba(255, 77, 0, 0.05);
}

.menu a:hover svg path {
  fill: #ff4d00;
}

/* 移动端按钮 */
.menu-toggle {
  display: none;
  border: none;
  background: transparent;
  appearance: none;
  border-radius: 8px;
  padding: 0;
}
/* 内容区域1 #home：与下方区块间距只设 margin-bottom；大模块间距 160px（小屏见 max-width:768px） */
.hero {
  box-sizing: border-box;
  position: relative;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  margin-top: 160px;
  margin-bottom: 160px;
}

/* 首屏整图：默认隐藏；视口 ≤1200px 起显示（与版心开始收缩一致），大屏保持排版版 */
.hero-banner-mobile {
  display: none;
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

.hero-banner-mobile img {
  width: 100%;
  height: auto;
  display: block;
}

@media (max-width: 1200px) {
  .hero-banner-mobile {
    display: block;
  }

  .hero-scale {
    display: none;
  }

  /* 作品区卡片：≤1200 即缩小；画廊高度须 ≥ 卡片(宽×16/9)+按钮区，否则 overflow 会裁切 */
  .section-portfolio .portfolio-gallery {
    min-height: clamp(340px, 52vw, 540px);
    padding-bottom: 8px;
  }

  .section-portfolio .portfolio-cards,
  .section-portfolio .portfolio-drag-hit {
    width: min(64vw, 208px);
  }
}

/* 大屏：与原先 .hero-in 同宽 */
.hero-scale {
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

.hero-in {
  position: relative;
  width: 100%;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero .r1,
.hero .r2,
.hero .r3 {
  display: flex;
  align-items: center;
}

.hero .r1 {
  flex-wrap: nowrap;
  margin-left: 160px;
  gap: 90px;
  position: relative;
}

.hero .r2 {
  width: 100%;
  justify-content: center;
  align-items: center;
  gap: 0;
}

/* 大字在底层，装饰图压在上面 */
.hero .r1 p {
  position: relative;
  z-index: 0;
}

/* 装饰图叠在版面上方时勿拦截开关点击 */
.hero .r1 img {
  pointer-events: none;
  z-index: 2;
}

.hero .r3 {
  margin-top: -8px;
  justify-content: center;
}

.hero .r1 p,
.hero .r2 p {
  margin: 0;
  font-family: "Archivo Black Local", "DM Sans", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-weight: 900;
  text-transform: uppercase;
  line-height: 0.9;
  letter-spacing: -0.03em;
  color: #0F172A;
  font-size: clamp(84px, 16vw, 220px);
}

.hero .r3 p {
  margin: 0;
  font-family: "Archivo Black Local", "DM Sans", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-weight: 900;
  text-transform: uppercase;
  line-height: 1;
  letter-spacing: -0.03em;
  font-size: 165px;
  color: #ff4d00;
  
}

.hero .r1 img:nth-of-type(1) {
  position: absolute;
  width: 400px;
  top: -40px;
  left: -250px;
}

.hero .r1 img:nth-of-type(2) {
  position: absolute;
  width: 69px;
  top: 40px;
  right: 360px;
}

.hero .r1 img:nth-of-type(3) {
  width: 280px;
  position: absolute;
  top: -100px;
  left: 670px;
  height: auto;
}

/* Uiverse 开关：.sw 内 input + label，#mr 控制状态 */
/* 仅抬高开关自身，避免整行 r2 盖掉上一行装饰 */
.hero .sw {
  position: relative;
  z-index: 4;
  display: flex;
  align-items: center;
  justify-content: center;
  align-self: center;
  pointer-events: auto;
  width: clamp(360px, 42vw, 560px);
  max-width: 540px;
  flex: 0 1 auto;
  /* 光学居中：M 与 RE 字宽不等、大写重心略偏上，用边距微调整行观感 */
  margin:12px 4px 0 8px;
}

.hero .sw input {
  display: none;
}

.hero .sw label {
  height: 150px;
  width: 100%;
  box-sizing: border-box;
  background-color: #ffffff;
  border-radius: 200px;
  border: 40px solid #0F172A;
  box-shadow: none;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  position: relative;
  -webkit-transition: -webkit-transform 0.4s;
  transition: transform 0.4s;
  flex-shrink: 0;
}

.hero .sw label:hover {
  transform: rotate(-1deg);
}

.hero .sw #mr:checked ~ label:hover {
  transform: rotate(1deg);
}

/* 必须包含 .hero .sw，否则优先级会低于后面的 .hero .sw label::before，选中态 left 不生效 */
.hero .sw #mr:checked ~ label::before {
  left: calc(100% - 66px - 17px);
  background-color: #0f172a;
  background-image: linear-gradient(315deg, #0f172a 0%, #334155 78%);
  -webkit-transition: left 0.45s cubic-bezier(0.34, 1.2, 0.64, 1);
  transition: left 0.45s cubic-bezier(0.34, 1.2, 0.64, 1);
  top: 0;
  bottom: 0;
  margin-top: auto;
  margin-bottom: auto;
  transform: none;
}

.hero .sw label::before {
  position: absolute;
  content: "";
  height: 50px;
  width: 50px;
  border-radius: 50%;
  background-color: #000000;
  background-image: linear-gradient(
    130deg,
    #757272 10%,
    #ffffff 11%,
    #726f6f 62%
  );
  left: 30px;
  top: 0;
  bottom: 0;
  margin-top: auto;
  margin-bottom: auto;
  transform: none;
  -webkit-box-shadow:
    0 2px 1px rgba(0, 0, 0, 0.3),
    10px 10px 10px rgba(0, 0, 0, 0.3);
  box-shadow:
    0 2px 1px rgba(0, 0, 0, 0.3),
    10px 10px 10px rgba(0, 0, 0, 0.3);
  -webkit-transition: left 0.45s cubic-bezier(0.34, 1.2, 0.64, 1);
  transition: left 0.45s cubic-bezier(0.34, 1.2, 0.64, 1);
}

@media (prefers-reduced-motion: reduce) {
  .hero .sw label,
  .hero .sw label::before {
    transition: none;
  }

  .hero .sw label:hover,
  .hero .sw #mr:checked ~ label:hover {
    transform: none;
  }
}

/* 锚点跳转时预留顶部导航高度，避免被遮挡 */
#home,
#about,
#works,
#portfolio,
#photo,
#experience,
#contact {
  scroll-margin-top: 96px;
}
/* 内容区域2 #about：顶不外推（避免与 .hero 的 margin-bottom 合并）；间距见 margin-bottom */
.section-two {
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  margin-top: 0;
  margin-bottom: 160px;
  gap: clamp(16px, 3vh, 32px);
}

.section-two .section-two-head {
  display: flex;
  justify-content: center;
  align-items: center;
}

.section-two .section-two-head img {
  display: block;
  width: 100%;
  max-width: 1200px;
  /* 介绍图最大高度，影响区域视觉高度 */
  max-height: min(480px, 48vh);
  height: auto;
  object-fit: contain;
  border-radius: 8px;
}

/* logo 墙高度 = 动画可视区域（与 script.js logoWall.clientHeight 一致，勿过小） */
.section-two .logo-wall {
  position: relative;
  z-index: -1;
  width: 100%;
  max-width: 1200px;
  height: 200px;
  padding-bottom: 8px;
  overflow: hidden;
  box-sizing: border-box;
}

.section-two .logo-wall img {
  position: absolute;
  left: 0;
  top: 0;
  width: 64px;
  height: 64px;
  object-fit: contain;
  display: block;
  opacity: 0;
  transform: translate3d(0, -260px, 0) rotate(-8deg);
  will-change: transform, opacity;
}

/* 内容区域3 #photo */
.section-three {
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: center;
  min-height: 0;
  margin-top: 0;
  margin-bottom: 160px;
}

.section-three .photo-top {
  height: 140px;
  width: 505.57px;
}

.section-three .photo-content,
.section-three .photo-content-bottom {
  display: flex;
  justify-content: center;
  align-items: center;
}

.section-three .photo-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.section-three .photo-images {
  position: relative;
  z-index: -1;
  width: 300px;
  height: 400px;
  margin: 64px 96px;
  overflow: hidden;
  border-radius: 24px;
  display: block !important;
}

.section-three .photo-images .photo-image {
  position: absolute;
  inset: 0;
}

.section-three .photo-images .photo-image-back {
  z-index: 1;
}

.section-three .photo-images .photo-image-front {
  z-index: 2;
  will-change: clip-path;
}

.section-three .photo-content .photo-meta {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  gap: 8px;
  margin: 0;
  padding: 0;
}

.section-three .photo-content .photo-meta dt {
  color: #64748b;
  text-align: left;
  font-size: 12px;
  font-weight: 400;
  line-height: 20px;
  margin: 0;
  width: 100%;
}

.section-three .photo-content .photo-meta dd {
  color: #64748b;
  font-feature-settings: "liga" off, "clig" off;
  text-align: left;
  font-size: 14px;
  font-weight: 500;
  line-height: 22px;
  margin: 0;
  width: 100%;
}

.section-three .photo-content-bottom p {
  color: #64748b;
  text-align: center;
  font-feature-settings: "liga" off, "clig" off;
  font-size: 14px;
  font-weight: 500;
  line-height: 22px;
  margin: 0;
}

.section-three .photo-content-bottom {
  flex-direction: column;
  align-items: center;
  gap: 8px;
  width: 100%;
}

/* 内容区域4 #portfolio；JS 钩子保留 .portfolio-cards-section */
.section-portfolio {
  box-sizing: border-box;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  margin-top: 0;
  margin-bottom: 160px;
  height: auto;
  max-height: none;
  min-height: 0;
  gap: 48px;
  overflow: visible;
}

.section-portfolio .portfolio-top {
  display: block;
  width: 505.57px;
  max-width: min(505.57px, calc(100% - 48px));
  height: 140px;
  object-fit: contain;
  flex-shrink: 0;
}

.section-portfolio .portfolio-gallery {
  position: relative;
  width: 100%;
  flex: none;
  min-height: clamp(360px, 48vw, 520px);
  overflow: hidden;
  background: #ffffff;
  isolation: isolate;
  transform: translateZ(0);
}

/* 与 CodePen 一致：竖向卡片 14rem × 9/16；整体区块仍用上方 portfolio-top + gallery min-height */
.section-portfolio .portfolio-cards {
  position: absolute;
  width: min(14rem, 88vw);
  aspect-ratio: 9 / 16;
  height: auto;
  top: 40%;
  left: 50%;
  transform: translate3d(-50%, -50%, 0);
  padding: 0;
  margin: 0;
  list-style: none;
  z-index: 1;
}

.section-portfolio .portfolio-cards li {
  list-style: none;
  padding: 0;
  margin: 0;
  width: 100%;
  height: 100%;
  box-sizing: border-box;
  text-align: center;
  font-size: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  position: absolute;
  top: 0;
  left: 0;
  background-size: contain;
  background-position: center;
  background-repeat: no-repeat;
  border-radius: 0.8rem;
  box-shadow: 0 12px 40px rgba(15, 23, 42, 0.12);
  will-change: transform;
  backface-visibility: hidden;
}

.section-portfolio .portfolio-drag-hit {
  position: absolute;
  left: 50%;
  top: 40%;
  transform: translate3d(-50%, -50%, 0);
  width: min(14rem, 88vw);
  aspect-ratio: 9 / 16;
  height: auto;
  z-index: 3;
  cursor: grab;
  touch-action: none;
  border-radius: 0.8rem;
}

.section-portfolio .portfolio-drag-hit:active {
  cursor: grabbing;
}

.section-portfolio .portfolio-actions {
  position: absolute;
  bottom: clamp(8px, 2vh, 32px);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  z-index: 4;
}

.section-portfolio .portfolio-prev,
.section-portfolio .portfolio-next {
  font: inherit;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid #e5e7eb;
  background: #fff;
  color: #0f172a;
}

.section-portfolio .portfolio-prev:hover,
.section-portfolio .portfolio-next:hover {
  border-color: #64748b;
  color: #0f172a;
}

.section-portfolio .portfolio-drag-proxy {
  visibility: hidden;
  position: absolute;
  width: 1px;
  height: 1px;
}

.section-portfolio.portfolio-cards-section--reduced {
  height: auto;
  max-height: none;
  min-height: 0;
  overflow: visible;
}

.section-portfolio.portfolio-cards-section--reduced .portfolio-gallery {
  min-height: auto;
  flex: none;
  padding: clamp(48px, 8vw, 64px) 0;
}

.section-portfolio.portfolio-cards-section--reduced .portfolio-cards {
  position: relative;
  top: auto;
  left: auto;
  transform: none;
  width: 100%;
  max-width: min(1200px, calc(100% - 48px));
  height: auto;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}

.section-portfolio.portfolio-cards-section--reduced .portfolio-cards li {
  position: relative;
  width: min(18rem, 88vw);
  aspect-ratio: 4 / 3;
  height: auto;
  opacity: 1;
  transform: none;
}

.section-portfolio.portfolio-cards-section--reduced .portfolio-actions {
  position: relative;
  bottom: auto;
  left: auto;
  transform: none;
  margin-top: 24px;
  justify-content: center;
}

/* 内容区域5 #experience：最后一块，margin-bottom 同时隔开 main 与页脚 */
.section-five.works-swipe-section {
  box-sizing: border-box;
  margin-top: 0;
  margin-bottom: 160px;
}

.section-five.works-swipe-section .works-swipe-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: clamp(24px, 4vw, 48px);
  margin-bottom: clamp(40px, 6vw, 64px);
}

.section-five.works-swipe-section .works-swipe-head__title {
  margin: 0;
  max-width: min(100%, 12ch);
  font-family: "Archivo Black Local", "DM Sans", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: clamp(2.5rem, 7.5vw, 4.25rem);
  font-weight: 700;
  line-height: 0.98;
  letter-spacing: -0.03em;
  color: #0f172a;
  text-transform: uppercase;
}

.section-five.works-swipe-section .works-swipe-head__intro {
  margin: 0;
  flex: 1 1 16rem;
  max-width: 26rem;
  padding-top: 0;
  font-size: 14px;
  line-height: 22px;
  min-height: calc(22px * 2);
  text-align: justify;
  text-justify: inter-ideograph;
  color: #64748b;
}

.section-five.works-swipe-section .works-swipe-list {
  list-style: none;
  margin: 0;
  padding: 0;
  width: 100%;
}

.section-five.works-swipe-section .works-swipe-list > li {
  margin: 0;
  padding: 0;
}

.section-five.works-swipe-section .works-swipe-item {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: clamp(24px, 3vw, 40px);
  width: 100%;
  padding: clamp(24px, 3vw, 32px) 0;
  border-bottom: 1px solid #eeeeee;
  cursor: default;
  box-sizing: border-box;
}

.section-five.works-swipe-section .works-swipe-list > li:last-child .works-swipe-item {
  border-bottom: none;
}

.section-five.works-swipe-section .works-swipe-item__meta {
  flex: 0 0 auto;
  width: min(100%, 168px);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.section-five.works-swipe-section .works-swipe-dots {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.section-five.works-swipe-section .works-swipe-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #e5e7eb;
  flex-shrink: 0;
}

.section-five.works-swipe-section .works-swipe-dot--on {
  background: #0f172a;
}

.section-five.works-swipe-section .works-swipe-item__date {
  margin: 0;
  font-size: 12px;
  line-height: 1.45;
  color: #64748b;
}

.section-five.works-swipe-section .works-swipe-item__body {
  flex: 1 1 0;
  min-width: min(100%, 240px);
}

.section-five.works-swipe-section .works-swipe-item__company {
  margin: 0 0 8px;
  font-size: clamp(1rem, 2.2vw, 1.125rem);
  font-weight: 700;
  line-height: 1.35;
  color: #0f172a;
}

.section-five.works-swipe-section .works-swipe-item__projects {
  margin: 0;
  font-size: 13px;
  line-height: 1.55;
  color: #64748b;
}

@media (max-width: 640px) {
  .section-five.works-swipe-section .works-swipe-head {
    flex-direction: column;
    align-items: center;
  }

  .section-five.works-swipe-section .works-swipe-head__intro {
    flex: 0 1 auto;
    max-width: none;
  }

  .section-five.works-swipe-section .works-swipe-item {
    flex-direction: column;
    gap: 16px;
  }

  .section-five.works-swipe-section .works-swipe-item__meta {
    width: 100%;
  }
}

.section-five.works-swipe-section img.swipeimage {
  position: fixed;
  left: 0;
  top: 0;
  width: min(350px, 70vw);
  height: min(350px, 70vw);
  object-fit: cover;
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  z-index: 50;
  will-change: transform, opacity;
}

@media (prefers-reduced-motion: reduce) {
  .section-five.works-swipe-section img.swipeimage {
    display: none;
  }
}

/* 页脚 #contact：联系信息 + 底栏；中间背景见 .footer-demo__panel；最大宽度见各子块 width/max-width */
.footer-demo {
  box-sizing: border-box;
  font-family: "DM Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.footer-demo__panel {
  margin: 64px auto;
  padding-top: 64px;
  width: 1200px;
  max-width: calc(100% - 48px);
  height: 450px;
  background-image: url("./imag/Bottom information.png");
  background-repeat: no-repeat;
  background-position: center bottom;
  background-size: contain;
  border-radius: 40px;
  color: #ffffff;
  background-color: #4b68f0;
}

.footer-demo__contain {
  width: min(1200px, calc(100% - 48px));
  margin: 0 auto;
  padding: 0 24px;
}

.footer-demo__grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px 24px;
  margin-bottom: 48px;
}

.footer-demo__label {
  margin: 0;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.62);
}

.footer-demo__value {
  margin: 8px 0 0;
  font-size: clamp(14px, 1.6vw, 17px);
  font-weight: 500;
  line-height: 1.35;
}

.footer-demo__value a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.35);
  transition: border-color 0.15s ease;
}

.footer-demo__value a:hover {
  border-bottom-color: #fff;
}

.footer-demo__bar {
  padding: 40px 0 32px;
  background: #fff;
}

.footer-demo__bar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px 24px;
}

.footer-demo__copy {
  font-size: 13px;
  font-weight: 500;
  color: #64748b;
}

.footer-demo__top-link {
  font-size: 13px;
  font-weight: 600;
  color: #64748b;
  text-decoration: none;
  transition: color 0.15s ease;
}

.footer-demo__top-link:hover {
  color: #ff4d00;
}

@media (max-width: 900px) {
  .footer-demo__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  /*
   * 小屏模块垂直间距：随视口收紧（宽屏仍为 160px，仅在此断点生效）
   * 勿在 html/body 设 overflow-x: hidden —— 会破坏 position: sticky 的顶栏。
   */
  html {
    --section-gap-y-sm: clamp(48px, 11vw, 88px);
    scroll-padding-top: max(
      72px,
      calc(env(safe-area-inset-top, 0px) + 56px)
    );
  }

  body {
    padding-left: env(safe-area-inset-left, 0);
    padding-right: env(safe-area-inset-right, 0);
  }

  main {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    overflow-x: hidden;
    max-width: 100%;
    /* fixed 顶栏不占文档流：safe + 栏高 + 与原 main 一致的顶距（对齐原先 sticky+padding） */
    padding-top: calc(
      env(safe-area-inset-top, 0px) + 48px + clamp(28px, 6vw, 56px)
    );
    padding-bottom: clamp(32px, 8vw, 64px);
    box-sizing: border-box;
  }

  .container {
    width: calc(100% - 32px);
    max-width: 100%;
    margin-left: auto;
    margin-right: auto;
    box-sizing: border-box;
  }

  #home,
  #about,
  #works,
  #portfolio,
  #photo,
  #experience,
  #contact {
    scroll-margin-top: max(
      72px,
      calc(env(safe-area-inset-top, 0px) + 56px)
    );
  }

  /* sticky 在部分移动浏览器 + overflow 组合下会失效顶栏随页滚走，小屏改用 fixed */
  .navbar {
    position: fixed;
    top: max(12px, env(safe-area-inset-top, 0px));
    left: max(16px, env(safe-area-inset-left, 0px));
    right: max(16px, env(safe-area-inset-right, 0px));
    width: auto;
    max-width: 100%;
    margin: 0;
    flex: none;
    justify-content: space-between;
    padding: 0 16px;
    z-index: 200;
  }

  .brand {
    flex-shrink: 1;
    min-width: 0;
    margin-right: 8px;
  }

  .brand svg {
    display: block;
    width: min(104px, 42vw);
    height: auto;
  }

  .navbar-inner {
    gap: 8px;
  }

  .menu-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    min-height: 44px;
    height: auto;
    padding: 0 8px;
    font-size: 14px;
    font-weight: 500;
    flex-shrink: 0;
  }

  .menu-wrap {
    position: absolute;
    left: 0;
    right: 0;
    top: calc(100% + 8px);
    z-index: 210;
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.08);
    display: none;
    overflow: hidden;
    max-height: min(70vh, calc(100dvh - 120px));
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  .menu-wrap.open {
    display: block;
  }

  .menu {
    flex-direction: column;
    gap: 0;
    padding: 0.5rem 0;
  }

  .menu a {
    display: block;
    padding: 0.75rem 1rem;
    border-radius: 0;
    justify-content: flex-start;
    font-size: 15px;
    min-height: 44px;
    box-sizing: border-box;
  }

  /*
   * 内容区域1：顶距交给 padding，避免与 margin 叠成双份空白（整图见 max-width:1200px）
   */
  .hero {
    margin-top: 0;
    margin-bottom: var(--section-gap-y-sm);
    min-height: 0;
    padding-left: 0;
    padding-right: 0;
    /* main 已提供顶栏占位，这里只保留内容呼吸间距，避免首屏出现过大留白 */
    padding-top: clamp(8px, 3vw, 20px);
    padding-bottom: max(16px, env(safe-area-inset-bottom, 0));
    justify-content: flex-start;
    overflow-x: hidden;
    box-sizing: border-box;
  }

  .section-two {
    gap: 24px;
    padding-top: clamp(24px, 6vw, 32px);
    padding-bottom: clamp(32px, 8vw, 40px);
    margin-top: 0;
    margin-bottom: var(--section-gap-y-sm);
  }

  .section-two .section-two-head {
    width: 100%;
    max-width: 100%;
    padding: 0 8px;
    box-sizing: border-box;
  }

  .section-two .section-two-head img {
    width: 100%;
    max-width: 100%;
    height: auto;
    border-radius: 6px;
  }

  .section-two .logo-wall {
    margin-top: 0;
    position: relative;
    width: 100%;
    height: 140px;
    max-height: min(280px, 38vh);
    padding-bottom: 0;
    overflow: hidden;
    box-sizing: border-box;
  }

  .section-two .logo-wall img {
    width: 36px;
    height: 36px;
    opacity: 0;
  }
  .section-three {
    min-height: 0;
    margin-top: 0;
    margin-bottom: var(--section-gap-y-sm);
    padding-left: max(16px, env(safe-area-inset-left, 0px));
    padding-right: max(16px, env(safe-area-inset-right, 0px));
  }

  .section-three .photo-top,
  .section-portfolio .portfolio-top {
    display: block;
    width: 100%;
    max-width: min(505.57px, calc(100% - 24px));
    height: auto;
    max-height: clamp(72px, 16vw, 120px);
    object-fit: contain;
    flex-shrink: 0;
  }

  .section-three .photo-content {
    flex-direction: row;
    flex-wrap: nowrap;
    justify-content: space-between;
    gap: 12px;
    width: 100%;
    padding: 0 8px;
    box-sizing: border-box;
    align-items: center;
  }

  .section-three .photo-content .photo-meta {
    align-items: center;
  }

  .section-three .photo-content .photo-meta dt,
  .section-three .photo-content .photo-meta dd {
    text-align: center;
  }

  .section-three .photo-images {
    width: min(220px, 52vw);
    height: auto;
    aspect-ratio: 3 / 4;
    margin: 16px auto;
    border-radius: 16px;
  }

  .section-three .photo-content .photo-meta {
    flex: 0 0 auto;
    min-width: 64px;
  }

  .section-three .photo-content-bottom {
    padding: 0 24px;
  }

  .section-three .photo-content-bottom p {
    font-size: 13px;
    line-height: 20px;
  }

  .section-portfolio {
    margin-top: 0;
    margin-bottom: var(--section-gap-y-sm);
    gap: clamp(16px, 4vw, 32px);
    height: auto;
    max-height: none;
    padding-bottom: env(safe-area-inset-bottom, 0);
  }

  .section-portfolio .portfolio-gallery {
    min-height: clamp(360px, 92vw, 520px);
    padding-bottom: max(12px, env(safe-area-inset-bottom, 0px));
    box-sizing: border-box;
  }

  /* 卡片再缩一档：min(rem,vw) 在手机上常被 rem 限制，看不出变化，故用 vw+px */
  .section-portfolio .portfolio-cards,
  .section-portfolio .portfolio-drag-hit {
    width: min(54vw, 168px);
  }

  /* 手机允许横向拖拽切卡 */
  .section-portfolio .portfolio-drag-hit {
    touch-action: pan-x;
  }

  .section-portfolio .portfolio-cards li {
    font-size: clamp(1.25rem, 6vw, 2rem);
  }

  .section-portfolio .portfolio-actions {
    flex-wrap: nowrap;
    justify-content: center;
    gap: 10px;
    bottom: max(12px, env(safe-area-inset-bottom, 0px));
    padding: 0 16px 4px;
    box-sizing: border-box;
    max-width: 100%;
  }

  .section-portfolio .portfolio-prev,
  .section-portfolio .portfolio-next {
    min-height: 44px;
    min-width: 0;
    padding: 8px 14px;
    font-size: 13px;
    white-space: nowrap;
  }

  .section-five.works-swipe-section {
    margin-top: 0;
    margin-bottom: var(--section-gap-y-sm);
    padding-top: clamp(24px, 6vw, 32px);
    padding-bottom: clamp(28px, 8vw, 40px);
    padding-left: max(16px, env(safe-area-inset-left, 0px));
    padding-right: max(16px, env(safe-area-inset-right, 0px));
  }

  /* 641～768px 仍沿用桌面 max-width:26rem 会导致文案挤在左侧；小屏统一通栏 */
  .section-five.works-swipe-section .works-swipe-head {
    flex-direction: column;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
    width: 100%;
  }

  .section-five.works-swipe-section .works-swipe-head__title {
    max-width: none;
    width: 100%;
    text-align: center;
  }

  .section-five.works-swipe-section .works-swipe-head__intro {
    flex: 0 1 auto;
    max-width: none;
    width: 100%;
    font-size: 13px;
    line-height: 20px;
    min-height: 0;
    text-align: left;
  }

  .section-five.works-swipe-section .works-swipe-item {
    padding: 16px 0;
    gap: 16px;
  }

  .section-five.works-swipe-section .works-swipe-item__meta {
    gap: 8px;
  }

  .section-five.works-swipe-section img.swipeimage {
    display: none !important;
  }

  .footer-demo__panel {
    width: auto;
    max-width: none;
    margin-top: 40px;
    margin-bottom: 24px;
    margin-left: max(16px, env(safe-area-inset-left, 0px));
    margin-right: max(16px, env(safe-area-inset-right, 0px));
    padding: clamp(28px, 7vw, 40px) 0 clamp(24px, 6vw, 36px);
    height: auto;
    min-height: 0;
  }

  .footer-demo__contain {
    width: 100%;
    max-width: none;
    padding: 0 16px;
  }

  .footer-demo__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px 12px;
    margin-bottom: 20px;
  }

  .footer-demo__value {
    margin: 4px 0 0;
  }

  .footer-demo__bar {
    padding: 32px 0 32px;
    padding-bottom: max(32px, env(safe-area-inset-bottom, 0px));
  }
}

@media (max-width: 480px) {
  .section-two .section-two-head img {
    max-height: min(220px, 30vh);
  }

  .section-two .logo-wall {
    height: 120px;
    max-height: min(240px, 32vh);
  }

  .section-two .logo-wall img {
    width: 30px;
    height: 30px;
  }

  .section-portfolio .portfolio-cards,
  .section-portfolio .portfolio-drag-hit {
    width: min(48vw, 148px);
  }

  .section-portfolio .portfolio-gallery {
    min-height: clamp(340px, 96vw, 480px);
  }

  .section-five.works-swipe-section .works-swipe-head__title {
    font-size: clamp(2rem, 10vw, 2.75rem);
  }

  .footer-demo__label {
    font-size: 10px;
  }
}

@media (max-width: 520px) {
  .footer-demo__panel {
    margin-top: 0px;
    padding: 24px 0 32px;
    border-radius: 28px 28px 0 0;
    height: auto;
    min-height: 320px;
    background-size: contain;
    background-position: center bottom;
  }

  .footer-demo__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px 10px;
    margin-bottom: 16px;
  }

  .footer-demo__value {
    margin: 3px 0 0;
  }
}

/* --------------------------------------------------------------------------
   GSAP「flair」鼠标轨迹（源自 CodePen WbbEGmp，仅样式层适配本站）
   原 Pen 对 body 使用 overflow:hidden 以居中演示；作品集需整页滚动，故不套用。
   -------------------------------------------------------------------------- */
.flair-trail {
  pointer-events: none;
}

.flair {
  position: fixed;
  left: 0;
  top: 0;
  opacity: 0;
  width: 50px;
  height: auto;
  /* 需高于常规区块，否则拖尾会被盖住看起来像「没反应」 */
  z-index: 9999;
  pointer-events: none;
  will-change: transform, opacity;
}