/* =========================================================
   徐禾晨 · 小红书整合营销作品集
   纵向滚动布局 · 简约 · 清晰 · 美观
   ========================================================= */
:root{
  --bg:#FBFAF8;
  --bg-soft:#F3F1EC;
  --ink:#16161A;
  --ink-2:#3A3A42;
  --muted:#8A8A93;
  --line:rgba(20,20,26,.10);
  --line-strong:rgba(20,20,26,.18);
  --accent:#FF2442;          /* 小红书品牌红 */
  --accent-soft:rgba(255,36,66,.10);
  --card:#FFFFFF;
  --shadow:0 1px 2px rgba(20,20,26,.04),0 12px 30px rgba(20,20,26,.06);
  --radius:6px;
  --maxw:1080px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,
    BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
::selection{background:var(--accent);color:#fff;}
img{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
.en{font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;}

/* ---------- 横向进度条 ---------- */
.progress{
  position:fixed;top:0;left:0;height:3px;width:0;
  background:var(--accent);z-index:120;transition:width .12s linear;
}

/* ---------- nav ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  display:flex;align-items:center;justify-content:space-between;
  padding:18px clamp(20px,5vw,56px);
  background:rgba(251,250,248,.72);
  backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .3s var(--ease),background .3s var(--ease),padding .3s var(--ease);
}
.nav.is-scrolled{border-bottom:1px solid var(--line);padding-top:14px;padding-bottom:14px;}
.nav__brand{display:flex;align-items:baseline;gap:8px;}
.nav__brand-cn{font-size:17px;font-weight:600;letter-spacing:.04em;}
.nav__brand-en{font-size:11px;letter-spacing:.22em;color:var(--muted);}
.nav__menu{display:flex;gap:30px;}
.nav__menu a{
  font-size:14px;color:var(--ink-2);position:relative;padding:4px 0;
  transition:color .25s var(--ease);white-space:nowrap;
}
.nav__menu a::after{
  content:"";position:absolute;left:0;bottom:-2px;height:2px;width:0;
  background:var(--accent);transition:width .3s var(--ease);
}
.nav__menu a:hover{color:var(--ink);}
.nav__menu a.active{color:var(--ink);}
.nav__menu a.active::after{width:100%;}
.nav__toggle{display:none;background:none;border:0;font-size:20px;cursor:pointer;color:var(--ink);}

/* =========================================================
   纵向滚动画布 deck
   ========================================================= */
.deck{
  display:block;
  height:100vh;
  width:100%;
  overflow-y:auto;
  overflow-x:hidden;
  scroll-snap-type:y proximity;
  -webkit-overflow-scrolling:touch;
  scrollbar-width:thin;
}
.deck::-webkit-scrollbar{width:8px;}
.deck::-webkit-scrollbar-thumb{background:var(--line-strong);border-radius:8px;}
.deck::-webkit-scrollbar-track{background:transparent;}

.panel{
  width:100%;
  min-height:100vh;
  scroll-snap-align:start;
  overflow:visible;
  position:relative;
}

.panel__inner{
  max-width:var(--maxw);
  margin:0 auto;
  width:100%;
  min-height:100%;
  padding:clamp(96px,13vh,150px) clamp(20px,5vw,56px) clamp(60px,9vh,100px);
}
.panel__inner--center{
  display:flex;flex-direction:column;justify-content:center;
  min-height:100%;
}

/* ---------- hero（首屏面板） ---------- */
.hero__eyebrow{
  font-size:12px;letter-spacing:.32em;color:var(--accent);
  margin:0 0 26px;text-transform:uppercase;font-weight:600;
}
.hero__name{
  font-size:clamp(56px,11vw,128px);line-height:.98;margin:0;font-weight:700;
  letter-spacing:.01em;
}
.hero__role{
  margin:22px 0 0;font-size:clamp(18px,2.4vw,24px);color:var(--ink-2);font-weight:500;
}
.hero__tagline{
  margin:10px 0 0;font-size:clamp(15px,1.7vw,18px);color:var(--muted);
  max-width:820px;line-height:1.65;
}
.hero__scroll{
  display:inline-flex;align-items:center;gap:10px;margin-top:54px;align-self:flex-start;
  font-size:13px;letter-spacing:.14em;color:var(--ink-2);
  border:1px solid var(--line-strong);padding:12px 22px;border-radius:40px;
  transition:all .3s var(--ease);
}
.hero__scroll span{transition:transform .3s var(--ease);}
.hero__scroll:hover{background:var(--ink);color:#fff;border-color:var(--ink);}
.hero__scroll:hover span{transform:translateX(5px);}

/* ---------- 区块标题 ---------- */
.sec-head{margin-bottom:40px;}
.sec-head__index{
  font-size:13px;letter-spacing:.2em;color:var(--accent);font-weight:700;
  font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;
}
.sec-head__en{
  font-size:clamp(30px,5vw,58px);line-height:1.04;margin:12px 0 6px;
  font-weight:600;letter-spacing:.01em;
  font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;
}
.sec-head__cn{font-size:clamp(20px,3vw,30px);font-weight:600;color:var(--ink);}
.sec-head__sub{margin:10px 0 0;color:var(--muted);font-size:15px;letter-spacing:.02em;}
.section-icon{
  display:block;max-width:200px;max-height:84px;width:auto;height:auto;
  object-fit:contain;margin:14px 0 4px;border-radius:4px;
}
.sec-desc{font-size:clamp(15px,1.8vw,17px);color:var(--ink-2);max-width:760px;line-height:1.9;}

/* 个人经历 · 分点描述 */
.experience-list{
  list-style:none;padding:0;margin:28px 0 0;
  display:flex;flex-direction:column;gap:16px;
  max-width:820px;
}
.experience-list li{
  position:relative;padding-left:18px;
  font-size:clamp(14px,1.6vw,16px);line-height:1.85;color:var(--ink-2);
}
.experience-list li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;
  border-radius:50%;background:var(--accent);
}
.experience-list strong{font-weight:600;color:var(--ink);letter-spacing:.04em;}

/* ---------- 个人经历 ---------- */
.pillars{display:flex;flex-wrap:wrap;gap:10px;margin:30px 0 6px;}
.pillar{
  font-size:13px;letter-spacing:.08em;color:var(--ink-2);
  border:1px solid var(--line-strong);border-radius:40px;padding:8px 18px;
}
.metrics{
  display:grid;grid-template-columns:repeat(3,1fr);gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;margin-top:40px;
}
.metric{background:var(--bg);padding:28px 24px;}
.metric__num{
  font-size:clamp(26px,3.6vw,38px);font-weight:700;color:var(--ink);
  font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;line-height:1;
}
.metric__label{margin-top:10px;font-size:13px;color:var(--muted);letter-spacing:.04em;}

/* ---------- 作品板块 ---------- */
.stats{display:flex;flex-wrap:wrap;gap:10px;margin:24px 0 6px;}
.stat{font-size:13px;color:var(--ink-2);background:var(--bg-soft);
  padding:8px 16px;border-radius:40px;letter-spacing:.03em;}

.gallery{margin-top:42px;}
.gallery__title{
  font-size:13px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);
  font-weight:600;margin-bottom:18px;
  display:flex;align-items:center;gap:12px;
}
.gallery__title::after{content:"";flex:1;height:1px;background:var(--line);}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px;}
.grid--wide{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));}
.grid--full{grid-template-columns:1fr;}

/* 整幅展示（主视觉 / 公众号传播头图）：居中、保持原比例、不裁切 */
.gallery--full .grid--full{display:flex;justify-content:center;}
.tile--full{
  aspect-ratio:auto;
  display:flex;align-items:center;justify-content:center;
  background:var(--bg-soft);cursor:pointer;
  width:100%;max-width:780px;padding:0;
  box-shadow:var(--shadow);
}
.tile--full img{
  width:auto;height:auto;max-width:100%;max-height:78vh;
  object-fit:contain;
  transition:transform .6s var(--ease),filter .6s var(--ease);
}
.tile--full:hover img{transform:scale(1.02);}

.tile{
  position:relative;overflow:hidden;border-radius:var(--radius);
  background:var(--bg-soft);cursor:pointer;aspect-ratio:4/5;
  box-shadow:var(--shadow);
}
.tile img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .6s var(--ease),filter .6s var(--ease);
}
.tile:hover img{transform:scale(1.05);}

/* 单个板块内、图组下方的外链按钮 */
.gallery__link-hint{margin:20px 0 8px;font-size:13px;color:var(--muted);letter-spacing:.04em;}
.gallery__links{display:flex;flex-wrap:wrap;gap:12px;}
.gallery__links .gallery__link{margin-top:0;}
.gallery__link{margin-top:0;}
.gallery__empty{
  margin-top:14px;padding:22px;border:1px dashed var(--line-strong);
  border-radius:var(--radius);text-align:center;color:var(--muted);
  font-size:14px;letter-spacing:.04em;
}
.media-video{
  width:100%;border-radius:var(--radius);box-shadow:var(--shadow);
  background:#000;margin-top:42px;max-height:560px;
}

/* links */
.links{display:flex;flex-wrap:wrap;gap:12px;margin-top:38px;}
.link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;color:var(--ink);border:1px solid var(--line-strong);
  padding:11px 20px;border-radius:40px;transition:all .28s var(--ease);
}
.link::after{content:"↗";color:var(--accent);font-size:13px;}
.link:hover{background:var(--accent);color:#fff;border-color:var(--accent);}
.link:hover::after{color:#fff;}
.links-hint{margin:38px 0 10px;font-size:13px;color:var(--muted);letter-spacing:.04em;}
.pdf-note{margin-top:32px;font-size:14px;color:var(--ink-2);}
.pdf-note a{color:var(--accent);border-bottom:1px solid var(--accent-soft);}

/* ---------- 页脚面板 ---------- */
.panel--footer .panel__inner{
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;min-height:100%;
}
.footer__name{font-size:22px;font-weight:700;margin:0;}
.footer__contact{color:var(--muted);margin:8px 0 0;font-size:14px;}
.footer__note{color:var(--muted);margin:24px 0 0;font-size:12px;letter-spacing:.04em;}

/* ---------- 灯箱 ---------- */
.lightbox{
  position:fixed;inset:0;z-index:200;background:rgba(15,15,18,.92);
  display:flex;align-items:center;justify-content:center;padding:4vh 4vw;
  opacity:0;visibility:hidden;transition:opacity .3s var(--ease),visibility .3s;
}
.lightbox.is-open{opacity:1;visibility:visible;}
.lightbox__img{max-width:100%;max-height:92vh;border-radius:4px;
  box-shadow:0 20px 60px rgba(0,0,0,.5);transform:scale(.98);transition:transform .3s var(--ease);}
.lightbox.is-open .lightbox__img{transform:scale(1);}
.lightbox__close{
  position:absolute;top:22px;right:26px;background:none;border:0;color:#fff;
  font-size:34px;line-height:1;cursor:pointer;opacity:.85;
}
.lightbox__close:hover{opacity:1;}

/* ---------- 揭示动画 ---------- */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .8s var(--ease),transform .8s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}
.reveal[data-delay="1"]{transition-delay:.08s;}
.reveal[data-delay="2"]{transition-delay:.16s;}
.reveal[data-delay="3"]{transition-delay:.24s;}

/* =========================================================
   视觉升级：每屏顶部主题色渐变 + 装饰小符号 + 水印数字
   ========================================================= */

/* 内容层置于渐变之上 */
.panel__inner{position:relative;z-index:1;}

/* 每屏顶部主题色渐变（进入内容区后回落到底色） */
.panel::before{
  content:"";position:absolute;top:0;left:0;right:0;height:52vh;z-index:0;
  pointer-events:none;
  background:
    radial-gradient(120% 72% at 84% 0%, rgba(255,36,66,.11), transparent 55%),
    linear-gradient(180deg, rgba(255,36,66,.05), transparent 58%);
}
/* 从各板块主视觉提取的主题色，确保不再一片粉 */
.panel--exp::before{
  background:
    radial-gradient(120% 72% at 14% 0%, rgba(255,36,66,.12), transparent 55%),
    linear-gradient(180deg, rgba(255,36,66,.05), transparent 58%);
}
.panel--s1::before{
  background:
    radial-gradient(120% 84% at 18% 0%, rgba(224,200,51,.24), transparent 52%),
    radial-gradient(110% 74% at 92% 4%, rgba(208,183,84,.14), transparent 48%),
    linear-gradient(180deg, rgba(201,160,70,.09), transparent 60%);
}
.panel--s2::before{
  background:
    radial-gradient(120% 84% at 82% 0%, rgba(136,187,139,.26), transparent 52%),
    radial-gradient(110% 74% at 10% 4%, rgba(84,140,77,.13), transparent 48%),
    linear-gradient(180deg, rgba(133,182,130,.08), transparent 60%);
}
.panel--s3::before{
  background:
    radial-gradient(120% 84% at 50% 0%, rgba(146,190,216,.24), transparent 52%),
    radial-gradient(110% 74% at 8% 4%, rgba(134,193,226,.12), transparent 48%),
    linear-gradient(180deg, rgba(142,177,198,.08), transparent 60%);
}
.panel--s4::before{
  background:
    radial-gradient(120% 84% at 30% 0%, rgba(237,205,171,.24), transparent 52%),
    radial-gradient(110% 74% at 90% 4%, rgba(209,217,179,.13), transparent 48%),
    linear-gradient(180deg, rgba(219,204,179,.08), transparent 60%);
}
.panel--hero::before,
.panel--footer::before{background:none;}

/* 大号水印数字（极淡，置于内容之后） */
.panel__wm{
  position:absolute;top:7vh;right:4vw;z-index:0;pointer-events:none;user-select:none;
  font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-weight:700;
  font-size:clamp(110px,20vw,260px);line-height:.8;letter-spacing:-.03em;
  color:rgba(255,36,66,.05);
}

/* 导航品牌前的小红点 */
.nav__brand-cn::before{
  content:"";display:inline-block;width:9px;height:9px;margin-right:9px;
  background:var(--accent);border-radius:50%;transform:translateY(1px);
}

/* 章节序号前的小菱形符号 */
.sec-head__index{position:relative;padding-left:22px;}
.sec-head__index::before{
  content:"";position:absolute;left:0;top:50%;width:10px;height:10px;
  background:var(--accent);border-radius:2px;
  transform:translateY(-50%) rotate(45deg);
}

/* 图组标题前的小菱形符号 */
.gallery__title::before{
  content:"";flex:0 0 auto;width:8px;height:8px;
  background:var(--accent);border-radius:2px;transform:rotate(45deg);
}

/* 状态标签前的小圆点 */
.stat{position:relative;padding-left:14px;}
.stat::before{
  content:"";position:absolute;left:6px;top:50%;width:4px;height:4px;
  background:var(--accent);border-radius:50%;transform:translateY(-50%);
}
.stat{padding-left:18px;}

/* 首屏：漂浮图墙层 + 中央柔光 + 文字层 */
.panel--hero .hero-bg{position:absolute;inset:0;z-index:0;}
.hero-scrim{
  position:absolute;inset:0;z-index:1;pointer-events:none;
  background:radial-gradient(64% 58% at 50% 47%,
    rgba(251,250,248,.85) 0%, rgba(251,250,248,.45) 40%, rgba(251,250,248,0) 72%);
}
.hero-content{position:relative;z-index:2;}
.hero__name{text-shadow:0 2px 30px rgba(251,250,248,.6);}
.hero__scroll{backdrop-filter:blur(4px);background:rgba(251,250,248,.5);}

/* =========================================================
   个人经历页 4 大板块入口卡片
   ========================================================= */
.section-cards{
  display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:44px;
}
.section-card{
  position:relative;display:flex;flex-direction:column;align-items:flex-start;
  text-align:left;padding:20px;border:1px solid var(--line);border-radius:var(--radius);
  background:var(--card);box-shadow:var(--shadow);cursor:pointer;overflow:hidden;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.section-card:hover{transform:translateY(-4px);box-shadow:0 18px 46px rgba(20,20,26,.08);border-color:var(--accent);}
.section-card:active{transform:scale(.97);}
.section-card.is-clicked{animation:cardClick .32s var(--ease);}
.section-card__index{
  font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-size:12px;letter-spacing:.18em;
  color:var(--accent);font-weight:700;margin-bottom:14px;
}
.section-card__thumb{
  width:100%;height:0;padding-bottom:62%;border-radius:4px;
  background:var(--bg-soft) center/cover no-repeat;transition:transform .5s var(--ease);
}
.section-card:hover .section-card__thumb{transform:scale(1.04);}
.section-card[data-target="s3"] .section-card__thumb{background-position:center top;}
.section-card__title{
  margin-top:16px;font-size:16px;font-weight:600;color:var(--ink);letter-spacing:.02em;
}
.section-card__arrow{
  position:absolute;right:18px;bottom:18px;font-size:18px;color:var(--muted);
  transition:transform .25s var(--ease),color .25s var(--ease);
}
.section-card:hover .section-card__arrow{transform:translateX(4px);color:var(--accent);}

@keyframes cardClick{
  0%{transform:scale(1);}
  45%{transform:scale(.96);}
  70%{transform:scale(1.02);}
  100%{transform:scale(1);}
}

/* =========================================================
   各板块底部“返回”按钮
   ========================================================= */
.back-btn{
  display:inline-flex;align-items:center;gap:10px;margin-top:50px;
  font-size:14px;letter-spacing:.1em;color:var(--ink);background:var(--card);
  border:1px solid var(--line-strong);border-radius:40px;padding:12px 26px;
  cursor:pointer;box-shadow:var(--shadow);
  transition:all .28s var(--ease);
}
.back-btn:hover{
  background:var(--accent);color:#fff;border-color:var(--accent);
  transform:translateX(-4px);box-shadow:0 14px 36px rgba(255,36,66,.18);
}
.back-btn.is-clicked{animation:cardClick .32s var(--ease);}
.back-btn__arrow{transition:transform .25s var(--ease);}
.back-btn:hover .back-btn__arrow{transform:translateX(-5px);}

/* ---------- 响应式 ---------- */
@media (max-width:760px){
  .nav__menu{
    position:fixed;top:62px;right:clamp(20px,5vw,56px);
    flex-direction:column;gap:6px;background:var(--bg);
    border:1px solid var(--line);border-radius:12px;padding:14px 18px;
    box-shadow:var(--shadow);transform:translateY(-8px);opacity:0;
    visibility:hidden;transition:all .25s var(--ease);min-width:150px;
  }
  .nav__menu.is-open{transform:none;opacity:1;visibility:visible;}
  .nav__toggle{display:block;}
  .metrics{grid-template-columns:repeat(2,1fr);}
  .grid{grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:10px;}
  .grid--wide{grid-template-columns:repeat(auto-fill,minmax(160px,1fr));}
  .section-cards{grid-template-columns:repeat(2,1fr);gap:14px;}
  .section-card{padding:16px;}
  .section-card__title{font-size:15px;}
}
@media (prefers-reduced-motion:reduce){
  *{scroll-behavior:auto!important;}
  .reveal{opacity:1;transform:none;transition:none;}
}