/* =========================================================
 * 向阳学术 · About 页样式
 * 设计语言与 scys-landing-clone 同源 (深绿主题 #1A7D7D)
 * 断点: PC >768 / 手机 ≤768
 * ========================================================= */
/* 设计令牌 / 重置 / .anr / .nav 已抽到 css/tokens.css(本文件之前引入), 供站内所有页面共用。 */

/* ---------- 1. Hero ---------- */
.hero{
  position:relative;
  padding:clamp(120px,16vh,170px) 24px clamp(64px,9vw,104px);
  text-align:center;
  color:var(--text-primary);
  background:linear-gradient(180deg,#EAF5F2 0%,#F3FAF8 55%,#ffffff 100%);
  overflow:hidden;
}
.hero-bg{
  position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(60% 45% at 50% 0%,rgba(59,184,176,.16),transparent 70%),
    radial-gradient(40% 30% at 82% 18%,rgba(26,125,125,.10),transparent 70%),
    radial-gradient(35% 28% at 14% 30%,rgba(26,125,125,.08),transparent 70%);
}
.hero-inner{position:relative;max-width:860px;margin:0 auto}
.hero-eyebrow{font-size:12px;letter-spacing:.5em;color:var(--green-deep);font-weight:600;margin-bottom:18px}
.hero-title{
  font-family:var(--serif);font-weight:900;
  font-size:clamp(52px,9vw,96px);
  line-height:1.12;letter-spacing:.02em;
  color:var(--green-deep);
}
.hero-sub{margin-top:18px;font-size:clamp(18px,2.6vw,26px);font-weight:600}
.hero-sub strong{color:var(--green-deep)}
.hero-desc{margin-top:14px;font-size:clamp(14px,1.8vw,17px);color:var(--text-secondary);line-height:1.9}
.hero-scroll{display:none}
.letter-toggle{display:none}

/* ---------- 通用 section 标题 ---------- */
.sec-title{
  font-family:var(--serif);font-weight:900;
  font-size:clamp(28px,4.6vw,44px);
  text-align:center;letter-spacing:.02em;
  margin-bottom:clamp(30px,5vw,52px);
  position:relative;
}
.sec-title::after{
  content:"";display:block;
  width:44px;height:4px;border-radius:2px;
  background:linear-gradient(90deg,var(--green-deep),var(--green-bright));
  margin:18px auto 0;
}
section{padding:clamp(64px,10vw,110px) 24px}
@media (min-width:769px){section{padding-left:48px;padding-right:48px}}
/* 内容宽度上限: 只有真正存在的整节列在这里(删版块时记得同步删) */
.what,.story,.finale{max-width:1080px;margin:0 auto}

/* ---------- 2. 向阳服务飞轮 (简约大气版) ---------- */
.wheel-block{margin-top:clamp(28px,5vw,56px);text-align:center}
/* 飞轮副标题: 排版与「向阳寄语」页 .letter-sub 完全一致(字号/字距/行高/颜色) */
.wheel-sub{margin-top:12px;font-size:clamp(14px,1.9vw,17px);color:var(--text-secondary);letter-spacing:.04em}
.wheel{
  position:relative;
  width:min(560px,50vw,52vh);aspect-ratio:1;
  margin:clamp(20px,3.2vh,38px) auto 0;
}
.wheel-ring{
  position:absolute;inset:11%;
  border:2px dashed rgba(26,125,125,.30);
  border-radius:50%;
  animation:wheelSpin 46s linear infinite;
}
@keyframes wheelSpin{to{transform:rotate(360deg)}}
@media (prefers-reduced-motion:reduce){.wheel-ring{animation:none}}
/* 中心: 白→浅绿渐变实心圆 + 双层柔光 */
.wheel-center{
  position:absolute;inset:33%;
  display:flex;align-items:center;justify-content:center;text-align:center;
  background:linear-gradient(150deg,#fff 0%,var(--green-light-bg) 100%);
  color:var(--green-deep);
  border-radius:50%;
  font-family:var(--serif);font-weight:900;
  font-size:clamp(15px,1.6vw,20px);line-height:1.45;letter-spacing:.05em;
  box-shadow:0 0 0 10px rgba(26,125,125,.045),0 16px 38px rgba(26,125,125,.12);
}
/* 节点: 大号可点击卡片 */
.wheel-node{
  position:absolute;width:22%;min-width:74px;
  padding:13px 8px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  min-height:clamp(58px,5.6vw,82px);
  /* 走系统字体栈(见 tokens.css 的 --sans); 系统黑体通常没有 900, 用描边补足厚度 */
  font-family:var(--sans);
  cursor:pointer;
  background:#fff;color:var(--green-deep);
  font-weight:900;font-size:clamp(15px,1.4vw,20px);line-height:1.3;letter-spacing:.04em;
  -webkit-text-stroke:.3px currentColor;
  border-radius:18px;
  border:2px solid rgba(26,125,125,.30);
  box-shadow:0 10px 26px rgba(26,125,125,.13),0 2px 6px rgba(26,125,125,.06);
  transform:translate(-50%,-50%);
  transition:transform .3s cubic-bezier(.16,1,.3,1),box-shadow .3s,border-color .3s,color .3s;
}
.wheel-node::after{                       /* 右下角的可点击指示 */
  content:"›";position:absolute;right:11px;bottom:5px;
  font-size:15px;font-weight:700;line-height:1;
  color:rgba(26,125,125,.32);
  transition:color .3s,transform .3s;
}
.wheel-node:hover,.wheel-node:focus-visible{
  transform:translate(-50%,-50%) translateY(-5px) scale(1.05);
  border-color:var(--green-deep);
  box-shadow:0 20px 44px rgba(26,125,125,.24);
  outline:none;
}
.wheel-node:hover::after,.wheel-node:focus-visible::after{color:var(--green-deep);transform:translateX(3px)}
.wheel-node:active{transform:translate(-50%,-50%) scale(.98)}
/* 提示条: 手机显示(触屏无 hover), 电脑靠节点上的 › 箭头暗示 */
.wheel-hint{
  display:none;
  align-items:center;justify-content:center;gap:10px;
  margin-top:clamp(10px,1.5vh,18px);
  font-size:clamp(12.5px,1.15vw,14px);color:var(--text-secondary);letter-spacing:.04em;
}
.wheel-hint::before,.wheel-hint::after{content:"";width:22px;height:1px;background:rgba(26,125,125,.26)}
/* 5 节点均匀分布在虚线圆环上 (环 inset:11% → 半径 39%, 圆心 50%/50%)
 * 顶部起顺时针: left = 50% + 39%·cos(θ), top = 50% + 39%·sin(θ), θ = -90° + i·72° */
.wheel-node.n1{left:50%;top:11%}         /* θ=-90°  */
.wheel-node.n2{left:87.1%;top:38%}       /* θ=-18°  */
.wheel-node.n3{left:72.9%;top:81.6%}     /* θ=54°   */
.wheel-node.n4{left:27.1%;top:81.6%}     /* θ=126°  */
.wheel-node.n5{left:12.9%;top:38%}       /* θ=198°  */

/* ---------- 3. 时间轴 ---------- */
.story{background:#fff}
/* 历程副标题: 与「向阳寄语」.letter-sub 完全同款间距公式与排版(字号/字距/颜色/居中) */
.page.story .story-sub{
  text-align:center;color:var(--text-secondary);
  margin:calc(clamp(18px,4vh,38px) * -0.55) 0 clamp(22px,4vh,42px);
  font-size:clamp(14px,1.9vw,17px);letter-spacing:.04em;
}
.timeline{
  max-width:640px;margin:0 auto;position:relative;
  padding-left:34px;
}
.timeline::before{
  content:"";position:absolute;left:9px;top:8px;bottom:8px;
  width:2px;background:linear-gradient(180deg,var(--green-mid),var(--green-subtle));
}
.tl-item{position:relative;padding:0 0 clamp(30px,5vw,42px)}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-32px;top:7px;
  width:12px;height:12px;border-radius:50%;
  background:#fff;border:3px solid var(--green-mid);
}
.tl-item.is-now::before{background:var(--green-deep);border-color:var(--green-deep);box-shadow:0 0 0 5px rgba(26,125,125,.18)}
.tl-year{
  font-family:var(--sans);font-weight:800;
  font-size:clamp(20px,2.8vw,26px);color:var(--green-deep);
  margin-right:12px;font-variant-numeric:tabular-nums;
}
.tl-name{font-weight:700;font-size:clamp(16px,2.2vw,19px)}
.tl-item p{margin-top:8px;color:var(--text-secondary);font-size:clamp(14px,1.8vw,16px);line-height:1.8}

/* ---------- 6. 陪跑记录 · 证据墙 (与 landing 首页同款) ---------- */
.proof{background:var(--green-light-bg)}
.proof-sub{
  text-align:center;color:var(--text-secondary);
  font-size:clamp(13px,1.8vw,16px);letter-spacing:.02em;
  margin:calc(clamp(18px,4vh,38px) * -0.5) 0 clamp(14px,2.5vh,26px);
}
.proof-kpi{display:none}
/* 单向向上无缝循环: 内容 ×2, 位移到 -50% 时正好回到起点 */
@keyframes evidenceDriftUp{0%{transform:translateY(0)}100%{transform:translateY(-50%)}}
@keyframes evidenceDriftDown{0%{transform:translateY(-50%)}100%{transform:translateY(0)}}
.evidence-wall{
  position:relative;display:flex;gap:10px;
  height:min(60vh,600px);overflow:hidden;
  margin:0 auto;max-width:1080px;width:100%;
  border-radius:20px;
}
.evidence-wall::before,.evidence-wall::after{
  content:"";position:absolute;left:0;right:0;height:70px;z-index:6;pointer-events:none;
}
.evidence-wall::before{top:0;background:linear-gradient(to bottom,var(--green-light-bg) 0%,transparent 100%)}
.evidence-wall::after{bottom:0;background:linear-gradient(to top,var(--green-light-bg) 0%,transparent 100%)}
/* 手机端专用照片墙(3 列)只在窄屏显示; 电脑端专用墙(5 列)反之 */
.evidence-wall.is-m{display:none}
.evidence-col{
  flex:1;display:flex;flex-direction:column;gap:10px;
  align-self:flex-start;   /* 关键: 列高=内容高, translateY(-50%) 才是真无缝循环 */
}
.evidence-col:nth-child(1){animation:evidenceDriftUp 38s linear infinite}
.evidence-col:nth-child(2){animation:evidenceDriftDown 46s linear infinite;margin-top:-40px}
.evidence-col:nth-child(3){animation:evidenceDriftUp 42s linear infinite;margin-top:-60px}
.evidence-col:nth-child(4){animation:evidenceDriftDown 50s linear infinite;margin-top:-30px}
.evidence-col:nth-child(5){animation:evidenceDriftUp 44s linear infinite;margin-top:-50px}
.evidence-card{
  position:relative;border-radius:10px;overflow:hidden;
  background:#fff;cursor:zoom-in;
  box-shadow:0 2px 12px rgba(0,0,0,.06);
  transition:transform .3s ease,box-shadow .3s ease;
}
.evidence-card:hover{transform:scale(1.04);box-shadow:0 8px 24px rgba(0,0,0,.12);z-index:8}
.evidence-card img{width:100%;display:block;aspect-ratio:4/3;object-fit:cover}
.evidence-col:nth-child(2) .evidence-card:nth-child(3n) img,
.evidence-col:nth-child(4) .evidence-card:nth-child(3n+1) img{aspect-ratio:3/4}
/* 角标（改稿反馈/盲审冲刺等）已按需求移除: 样式与 HTML 里的 40 个 <span> 一并清掉 */
/* 中央统计浮层(电脑端): 手机端改用 .proof-kpi 文字行, 见手机端断点 */
.evidence-stats{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);z-index:10;
  display:flex;gap:40px;align-items:baseline;
  background:rgba(255,255,255,.78);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  border:1px solid rgba(255,255,255,.5);border-radius:20px;
  padding:24px 44px;
  box-shadow:0 8px 40px rgba(0,0,0,.08);
}
.evidence-stat{text-align:center}
.evidence-num{
  font-family:var(--serif);
  font-size:clamp(32px,4.4vw,52px);font-weight:900;line-height:1;color:var(--green-deep);
}
.evidence-unit{font-size:.4em;font-weight:700;color:var(--green-mid);margin-left:2px}
.evidence-label{font-size:13px;color:var(--text-secondary);margin-top:6px;letter-spacing:1px}

/* 悬停 / 键盘聚焦时暂停漂移。
   墙上的卡片是"可点的", 目标一直在动很难点准; 也方便看清正在看的那张。
   - 用 @media (hover:hover) 限定: 触摸设备 tap 之后 :hover 会粘住,
     不加限定的话手指碰过的地方会一直停住不动。
   - 已经关掉动效的(reduce)本来就 animation:none, 这里不用重复处理。 */
@media (hover:hover){
  .evidence-wall:hover .evidence-col,
  .evidence-wall:focus-within .evidence-col{animation-play-state:paused}
}

/* 减弱动效偏好: 所有无限循环的装饰动画一律停下
   (原来只覆盖了 .anr 和飞轮圆环, 照片墙/上滑提示/二维码脉冲还在动) */
@media (prefers-reduced-motion:reduce){
  .evidence-col{animation:none!important}
  .hero-scroll{animation:none}
  .wheel-ring{animation:none}
  .wechat-qr-tip-dot{animation:none}
  .evidence-card{transition:none}
}

/* ---------- 灯箱: 点击看大图详情 ----------
   遮罩 / 显隐 / 淡入淡出全部复用 tokens.css 第 5 节的 .modal(本页用的是
   .modal.modal--dark: 遮罩更暗、手机上仍居中), 这里只写图片舞台与它的缩放进场。
   2026-09-17 之前这里另抄了一整套遮罩, 与 .modal 逐字相同。 */
.pic-lb-stage{
  position:relative;max-width:min(560px,92vw);
  transform:scale(.94);transition:transform .3s cubic-bezier(.16,1,.3,1);
}
.modal.is-visible .pic-lb-stage{transform:scale(1)}
.pic-lb-stage img{
  display:block;width:100%;max-height:82vh;object-fit:contain;
  border-radius:16px;background:#fff;padding:10px;
  box-shadow:0 16px 48px rgba(0,0,0,.3),0 48px 100px rgba(0,0,0,.35);
}
.pic-lb-cap{
  text-align:center;margin-top:14px;
  color:rgba(255,255,255,.85);font-size:13.5px;letter-spacing:.06em;
}
.pic-lb-btn{
  position:absolute;top:50%;transform:translateY(-50%);
  width:44px;height:44px;border-radius:50%;border:0;cursor:pointer;
  background:rgba(255,255,255,.14);color:#fff;
  display:flex;align-items:center;justify-content:center;
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
  transition:background .2s,transform .2s;
}
.pic-lb-btn:hover{background:rgba(255,255,255,.28);transform:translateY(-50%) scale(1.08)}
.pic-lb-prev{left:-10px}
.pic-lb-next{right:-10px}
.pic-lb-close{
  position:absolute;top:-52px;right:-6px;
  width:40px;height:40px;border-radius:50%;border:0;cursor:pointer;
  background:rgba(255,255,255,.14);color:#fff;
  display:flex;align-items:center;justify-content:center;
  transition:background .2s,transform .2s;
}
.pic-lb-close:hover{background:rgba(255,255,255,.28);transform:rotate(90deg)}

/* ---------- 6. 结尾 CTA ---------- */
.finale{background:#fff;text-align:center;padding-bottom:clamp(70px,10vw,120px)}
.finale-title{
  font-family:var(--serif);font-weight:900;
  font-size:clamp(30px,5.6vw,54px);
  line-height:1.35;letter-spacing:.02em;
  color:var(--green-deep);
}
.finale-qr{
  width:min(280px,70vw);margin:clamp(36px,6vw,56px) auto 0;
  padding:14px;border-radius:20px;background:#fff;
  border:1px solid rgba(26,125,125,.14);
  box-shadow:0 6px 20px rgba(26,125,125,.10),0 16px 44px rgba(26,125,125,.08);
}
.finale-tip{
  margin-top:26px;font-size:clamp(15px,2vw,18px);font-weight:600;color:var(--text-primary);line-height:1.8;
}
.finale-tip span{font-size:.85em;color:var(--text-secondary);font-weight:400}

/* ---------- 微信二维码弹窗 ----------
   遮罩 / 面板底 / 圆角 / 阴影 / 关闭键 / 手机底部抽屉全部来自 tokens.css 的
   .modal / .modal-panel / .modal-close, 这里只留本弹窗的尺寸与排版。 */
.wechat-qr-panel{
  max-width:420px;
  padding:36px 32px 28px;
  display:flex;flex-direction:column;align-items:center;text-align:center;
}
.wechat-qr-header{margin-bottom:20px}
.wechat-qr-badge{
  display:inline-block;padding:5px 14px;border-radius:100px;
  background:linear-gradient(135deg,var(--green-deep),var(--green-mid));
  color:#fff;font-size:12px;font-weight:600;letter-spacing:.5px;
  margin-bottom:14px;box-shadow:0 4px 12px rgba(26,125,125,.25);
}
.wechat-qr-title{font-size:24px;font-weight:700;margin:0 0 8px;letter-spacing:-.5px}
.wechat-qr-subtitle{font-size:14px;color:#5e6a72;margin:0;line-height:1.7}
.wechat-qr-img-wrap{
  width:280px;height:280px;padding:12px;border-radius:18px;background:#fff;
  border:1px solid rgba(26,125,125,.12);
  box-shadow:0 4px 16px rgba(26,125,125,.10),0 12px 32px rgba(26,125,125,.06);
  margin-bottom:18px;
}
.wechat-qr-img{width:100%;height:100%;border-radius:8px}
.wechat-qr-tip{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 16px;border-radius:100px;
  background:rgba(26,125,125,.06);color:var(--green-deep);
  font-size:13px;font-weight:500;
}
.wechat-qr-tip-dot{
  width:8px;height:8px;border-radius:50%;background:var(--green-deep);
  box-shadow:0 0 0 4px rgba(26,125,125,.18);
  animation:qrPulse 1.8s ease-in-out infinite;
}
@keyframes qrPulse{0%,100%{box-shadow:0 0 0 4px rgba(26,125,125,.18)}50%{box-shadow:0 0 0 8px rgba(26,125,125,.06)}}
/* body.modal-open 的滚动锁已上移到 css/tokens.css(共享弹窗机制), 这里不再重复 */

/* =========================================================
 * 手机端 ≤768
 * ========================================================= */
@media (max-width:768px){
  .wheel-node{width:clamp(68px,20vw,84px);padding:8px 4px}
  /* 手机端改底部抽屉这件事由 tokens.css 的 .modal / .modal-panel 统一提供
     (定位、圆角、translateY 入场、顶部把手), 这里只剩本弹窗的尺寸与内边距。 */
  .wechat-qr-panel{
    max-width:100vw;
    padding:28px 20px calc(28px + env(safe-area-inset-bottom,0px));
  }
  .wechat-qr-img-wrap{width:240px;height:240px}
  .wechat-qr-title{font-size:22px}
  .wechat-qr-close{top:18px;right:18px}
}

/* ---------- 飞轮环节详情弹窗 ----------
   同上: 遮罩 / 面板底 / 关闭键 / 手机抽屉走共享层, 这里只留尺寸、内边距与滚动。 */
.wheel-panel{
  max-width:520px;max-height:86vh;overflow-y:auto;
  padding:42px 38px 30px;
  -webkit-overflow-scrolling:touch;
}
.wheel-panel-badge{
  display:inline-block;padding:5px 14px;border-radius:100px;
  background:var(--green-subtle);color:var(--green-deep);
  font-size:12px;font-weight:700;letter-spacing:.08em;
}
.wheel-panel-title{
  font-family:var(--serif);font-weight:900;
  font-size:clamp(24px,2.3vw,30px);line-height:1.25;
  color:var(--green-deep);letter-spacing:.02em;
  margin:14px 0 9px;
}
.wheel-panel-lead{margin:0;font-size:15px;color:var(--text-secondary);line-height:1.7;letter-spacing:.01em}
.wheel-panel-points{margin:24px 0 0;display:flex;flex-direction:column;gap:14px}
.wheel-panel-points li{
  position:relative;padding-left:27px;
  font-size:14.5px;line-height:1.78;color:var(--text-primary);
}
.wheel-panel-points li::before{
  content:"";position:absolute;left:0;top:7px;
  width:16px;height:16px;border-radius:50%;
  background:var(--green-subtle);box-shadow:inset 0 0 0 2px var(--green-mid);
}
.wheel-panel-points li::after{
  content:"";position:absolute;left:5px;top:12px;
  width:6px;height:6px;border-radius:50%;background:var(--green-deep);
}
.wheel-panel-note{
  margin:26px 0 0;padding-top:15px;
  border-top:1px solid rgba(26,125,125,.13);
  font-size:12px;color:var(--text-secondary);letter-spacing:.02em;
}

/* =========================================================
 * PPT 翻页模式: 一页一屏 + 吸附 + 右侧圆点导航
 * (scroll-behavior 的基础值已在 tokens.css 里设过, 这里不重复声明)
 * ========================================================= */
html{scroll-snap-type:y mandatory}
.page{
  min-height:100vh;min-height:100svh;
  scroll-snap-align:start;scroll-snap-stop:always;
  display:flex;flex-direction:column;justify-content:center;
  box-sizing:border-box;
  padding-top:clamp(76px,11vh,104px);
  padding-bottom:clamp(30px,5vh,52px);
}
.page .sec-title{margin-bottom:clamp(18px,4vh,38px)}
.page .sec-title::after{margin-top:12px}
.page.hero{padding-top:0;padding-bottom:0}
.page.hero .hero-inner{width:100%}

/* ---------- 2. 向阳寄语 ---------- */
.letter{background:#fff}
.letter-sub{
  text-align:center;color:var(--text-secondary);
  margin:calc(clamp(18px,4vh,38px) * -0.55) 0 clamp(22px,4vh,42px);
  font-size:clamp(14px,1.9vw,17px);letter-spacing:.04em;
}
.letter-layout{
  display:flex;align-items:flex-start;
  gap:clamp(20px,4vw,46px);
  max-width:840px;margin:0 auto;width:100%;
}
.letter-side{
  flex:0 0 auto;position:relative;
  display:flex;flex-direction:column;align-items:center;gap:10px;
}
.letter-avatar{
  width:clamp(84px,11vw,122px);height:clamp(84px,11vw,122px);
  border-radius:50%;object-fit:cover;
  border:3px solid #fff;
  box-shadow:0 6px 20px rgba(26,125,125,.22),0 0 0 3px var(--green-subtle);
}
.letter-name{font-weight:700;font-size:clamp(14px,1.8vw,16px);color:var(--text-primary)}
.letter-badge{
  position:absolute;top:-4px;right:-14px;
  background:linear-gradient(135deg,var(--green-deep),var(--green-mid));
  color:#fff;font-size:11px;font-weight:600;letter-spacing:.1em;
  padding:4px 12px;border-radius:100px;
  box-shadow:0 4px 12px rgba(26,125,125,.3);
}
.letter-bubble{
  position:relative;flex:1;
  background:var(--green-light-bg);
  border:1px solid rgba(26,125,125,.15);
  border-radius:24px 24px 24px 6px;
  padding:clamp(20px,3.5vw,36px) clamp(20px,3.5vw,38px);
  display:flex;flex-direction:column;gap:13px;
  box-shadow:0 4px 16px rgba(26,125,125,.08),0 14px 40px rgba(26,125,125,.07);
}
.letter-bubble::before{
  content:"";position:absolute;left:-8px;top:30px;
  width:16px;height:16px;background:var(--green-light-bg);
  border-left:1px solid rgba(26,125,125,.15);
  border-bottom:1px solid rgba(26,125,125,.15);
  transform:rotate(45deg);
}
.letter-bubble p{
  margin:0;font-size:clamp(13px,1.65vw,15.5px);
  line-height:1.92;color:#3f4a51;letter-spacing:.01em;
}
.letter-bubble p.is-key{color:var(--green-deep);font-weight:700}

/* ---------- 3. 向阳服务飞轮 (PPT 模式下的尺寸收敛) ---------- */
.page.what{padding-top:clamp(72px,9vh,92px)}
/* 副标题紧贴主标题: 与「向阳寄语」.letter-sub 用同一套间距公式(主标题 margin-bottom 不动 + 负 margin 上提), 各屏都完全等距 */
.page.what .wheel-block{margin-top:0}
.page.what .wheel-sub{margin-top:calc(clamp(18px,4vh,38px) * -0.55);margin-bottom:clamp(14px,2.6vh,30px)}
/* 飞轮放大: 宽/高双向约束, 保证一屏放得下 */
.page.what .wheel{width:min(560px,50vw,50vh);margin-top:clamp(14px,2.2vh,28px)}
/* 矮屏(如 1280×720): 飞轮再收一档, 保证一屏不溢出 */
@media (min-width:769px) and (max-height:780px){
  .page.what .wheel{width:min(560px,50vw,44vh)}
  .page.what .wheel-node{min-width:0;min-height:0;font-size:15px;padding:10px 6px}
  .page.what .wheel-center{font-size:14px}
  /* 寄语页内容在 720 高下会高出几像素, 收紧上下留白, 保证整页吸附不露半页 */
  .page.letter{padding-top:clamp(64px,9vh,88px);padding-bottom:clamp(24px,4vh,40px)}
  .page.letter .letter-sub{margin-bottom:clamp(18px,3.4vh,34px)}
}

/* ---------- 6. 常见问题 ---------- */
.faq{background:#fff}
.faq-list{
  max-width:780px;margin:0 auto;width:100%;
  display:flex;flex-direction:column;gap:13px;
}
.faq-item{
  background:#fff;border-radius:16px;
  border:1px solid rgba(26,125,125,.13);
  box-shadow:0 2px 8px rgba(26,125,125,.05);
  overflow:hidden;
}
.faq-q{
  width:100%;display:flex;justify-content:space-between;align-items:center;gap:14px;
  padding:17px 20px;background:none;border:0;cursor:pointer;
  font-size:clamp(14px,1.9vw,16px);font-weight:600;color:var(--text-primary);
  text-align:left;font-family:inherit;
}
.faq-toggle{
  flex:0 0 auto;width:28px;height:28px;border-radius:50%;
  background:var(--green-deep);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:18px;font-weight:400;line-height:1;
  transition:transform .3s cubic-bezier(.16,1,.3,1);
}
.faq-a{max-height:0;overflow:hidden;transition:max-height .45s cubic-bezier(.16,1,.3,1)}
.faq-a p{margin:0;padding:0 20px 18px;font-size:13.8px;line-height:1.85;color:var(--text-secondary)}
.faq-a strong{color:var(--green-deep)}
.faq-item.open .faq-toggle{transform:rotate(45deg)}
/* 展开高度由 js/about.js 按内容真实高度写 inline max-height(可过渡)。
   这里给的是"JS 没接上"时的兜底: none = 全文铺开, 宁可高一点也不要悄悄截断。 */
.faq-item.open .faq-a{max-height:none}

/* ---------- 8. 结尾 ---------- */
.page.finale .finale-qr{width:min(220px,58vw);margin-top:clamp(20px,4vh,38px)}
.page.finale .finale-tip{margin-top:clamp(14px,3vh,24px)}
/* 页脚: 结构与文案由 _deploy/partials.mjs 统一生成(与导航页/工具页逐字相同),
   视觉样式在 css/tokens.css 第 6 节 —— 这里只处理"首页放不下额外留白"这一件事。
   首页是整屏吸附站(<section class="page">, 一屏一页), 页脚如果再带自己的
   padding, .finale 这一屏就会被撑过一屏高。所以把 padding 归零,
   留白仍由上面 .finale 自己的 padding-bottom 提供, 上间距沿用原来的
   clamp(24px,6vh,52px) —— 与改造前的 .finale-copy 逐像素一致。 */
.finale>.navfoot{padding:0;margin-top:clamp(24px,6vh,52px)}

/* ---------- 圆点导航 ---------- */
.page-dots{
  position:fixed;right:clamp(10px,2.4vw,26px);top:50%;transform:translateY(-50%);
  z-index:900;display:flex;flex-direction:column;gap:12px;
}
.page-dots button{
  width:9px;height:9px;border-radius:50%;border:0;padding:0;
  background:rgba(26,125,125,.28);cursor:pointer;
  transition:background .3s,transform .3s,box-shadow .3s;
}
.page-dots button:hover{background:rgba(26,125,125,.55)}
.page-dots button.is-active{
  background:var(--green-deep);transform:scale(1.5);
  box-shadow:0 0 0 4px rgba(26,125,125,.16);
}

/* =========================================================
 * 手机端 10 屏故事流 (≤768)
 * 深浅节奏: 深绿首屏 → 白(寄语) → 白(飞轮) → 浅绿×3(理由) → 白(来路)
 *           → 深绿(证据墙·生财同款) → 白(FAQ) → 深绿(结尾)
 * ========================================================= */
@media (max-width:768px){
  /* 强制整页吸附: 只要滑动就落到完整一页, 不允许停在半页 */
  html{scroll-snap-type:y mandatory}
  section{padding-left:18px;padding-right:18px}

  /* ---- 通用 ---- */
  .page{padding-top:clamp(72px,11vh,96px);padding-bottom:clamp(26px,4.5vh,42px)}
  .page .sec-title{font-size:clamp(26px,7.4vw,34px);margin-bottom:clamp(14px,2.6vh,26px)}
  .sec-title::after{margin-top:12px;width:36px;height:3px}

  /* ---- 01 首屏: 字号加大 + 上滑提示 (沿用原浅色主题) ---- */
  .hero-inner{position:static}   /* 关键: 让提示条的包含块变成整页, 才能贴到页面底部 */
  .hero-eyebrow{margin-bottom:14px}
  .hero-title{font-size:clamp(46px,14.5vw,62px)}
  .hero-sub{font-size:17px;margin-top:14px}
  .hero-desc{font-size:13.5px;line-height:1.9;margin-top:12px}
  .hero-scroll{
    display:flex;position:absolute;left:0;right:0;
    bottom:calc(26px + env(safe-area-inset-bottom,0px));
    flex-direction:column;align-items:center;gap:4px;
    color:var(--green-deep);font-size:11.5px;letter-spacing:.3em;font-weight:600;
    animation:heroHint 2.2s ease-in-out infinite;
  }
  @keyframes heroHint{0%,100%{transform:translateY(0);opacity:.55}50%{transform:translateY(7px);opacity:1}}

  /* ---- 02 寄语(手机): 单卡结构 — 卡内首行「头像+姓名」，长文底部渐隐折叠可展开 ---- */
  .page.letter{
    padding-top:clamp(58px,9vh,84px);
    padding-bottom:clamp(22px,5vh,48px);
  }
  /* 标题 + 副标题恢复正常显示 */
  .page.letter .sec-title{display:block;margin-bottom:0}
  .letter-sub{
    display:block;
    margin:10px 0 clamp(15px,3vh,26px);
    font-size:13px;line-height:1.6;
  }
  /* 卡片容器: 底色/描边/圆角/阴影统一挂在这里, 内部两块保持透明 => 天然没有拼接缝 */
  .letter-layout{
    flex-direction:column;align-items:stretch;
    gap:0;width:100%;max-width:100%;
    background:var(--green-light-bg);
    border:1px solid rgba(26,125,125,.15);
    border-radius:24px;
    box-shadow:0 2px 10px rgba(26,125,125,.06),0 14px 40px rgba(26,125,125,.07);
    padding:15px 16px 13px;
  }
  /* 卡内首行: 小头像 + 姓名 + 亲笔徽章 (横向, 与参考稿同样的头像位置) */
  .letter-side{
    flex:0 0 auto;width:auto;
    flex-direction:row;align-items:center;gap:9px;
    margin-bottom:12px;
  }
  .letter-avatar{
    width:42px;height:42px;border-width:2px;
    box-shadow:0 2px 8px rgba(26,125,125,.18),0 0 0 3px var(--green-subtle);
  }
  .letter-name{font-size:14px;text-align:left;line-height:1.2}
  .letter-badge{
    position:static;top:auto;right:auto;
    font-size:9.5px;padding:3px 9px;letter-spacing:.06em;
    box-shadow:none;
  }
  /* 正文: 去掉 PC 的气泡造型, 透明铺满卡片; 折叠时靠底部渐变把文字"化掉" */
  .letter-bubble{
    flex:1 1 0%;min-width:0;position:relative;
    background:none;border:0;border-radius:0;box-shadow:none;
    padding:0;gap:11px;text-align:left;
    max-height:clamp(178px,30vh,248px);
    overflow:hidden;
    transition:max-height .45s cubic-bezier(.16,1,.3,1);
  }
  .letter-bubble::before{display:none}
  /* 底部渐隐: 用 mask 贴在滚动视口上(覆盖层放在滚动容器里会跟着文字一起滚), 与卡片底色天然融合 */
  .letter-bubble.is-fade{
    -webkit-mask-image:linear-gradient(180deg,#000 0,#000 calc(100% - 70px),rgba(0,0,0,0) 100%);
    mask-image:linear-gradient(180deg,#000 0,#000 calc(100% - 70px),rgba(0,0,0,0) 100%);
  }
  /* flex 容器里段落必须禁止收缩, 否则会被压扁而不是被裁切 */
  .letter-bubble p{flex:none;font-size:13px;line-height:1.88;color:#3f4a51}
  .letter-bubble p:first-child{font-weight:700;font-size:13.5px;color:var(--text-primary)}
  .letter-bubble p.is-key{color:var(--green-deep);font-weight:700}

  /* 展开态: 全文铺开, 遮罩淡出 */
  .letter.is-open .letter-bubble{
    max-height:1200px;min-height:0;
    overflow-y:auto;-webkit-overflow-scrolling:touch;
    scrollbar-width:none;
  }
  .letter.is-open .letter-bubble::-webkit-scrollbar{display:none}
  /* 已展开时只在"下面还有没读完的内容"时留一条更短的渐隐, 读到末尾自动消失 */
  .letter.is-open .letter-bubble.is-fade{
    -webkit-mask-image:linear-gradient(180deg,#000 0,#000 calc(100% - 44px),rgba(0,0,0,0) 100%);
    mask-image:linear-gradient(180deg,#000 0,#000 calc(100% - 44px),rgba(0,0,0,0) 100%);
  }
  /* 展开后全文可能高于一屏: 页面高度仍锁死一屏, 由卡片内部滚动, 不破坏整页吸附 */
  .page.letter.is-open{height:100svh;min-height:0}
  .page.letter.is-open .sec-title,
  .page.letter.is-open .letter-sub{flex:none}
  .page.letter.is-open .letter-layout{flex:0 1 auto;min-height:0}

  /* 展开入口: 卡片底部居中的绿色文字链 + 小箭头 (参考稿同款位置) */
  .letter-toggle{
    display:inline-flex;align-items:center;justify-content:center;gap:6px;
    flex:none;align-self:center;margin-top:13px;
    padding:7px 12px;border:0;cursor:pointer;border-radius:100px;
    background:none;color:var(--green-deep);
    font-family:inherit;font-size:12.5px;font-weight:700;letter-spacing:.04em;
  }
  .letter-toggle::after{
    content:"";width:6px;height:6px;margin-top:-3px;
    border-right:1.8px solid currentColor;border-bottom:1.8px solid currentColor;
    transform:rotate(45deg);
    transition:transform .3s cubic-bezier(.16,1,.3,1);
  }
  .letter.is-open .letter-toggle{color:#8A96A0;font-weight:600}
  .letter.is-open .letter-toggle::after{transform:rotate(-135deg);margin-top:3px}

  /* ---- 03 飞轮: 手机端放大铺满 ---- */
  .page.what{padding-top:clamp(58px,8vh,84px)}
  /* 副标题的间距与排版: 与「向阳寄语」页 .letter-sub 完全一致 */
  .page.what .sec-title{margin-bottom:0}
  .page.what .wheel-block{margin-top:0}
  .page.what .wheel-sub{
    margin:10px 0 clamp(15px,3vh,26px);
    font-size:13px;line-height:1.6;letter-spacing:.04em;
  }
  .page.what .wheel{width:min(380px,88vw,45vh);margin-top:clamp(10px,1.6vh,18px)}
  .page.what .wheel-node{
    width:25%;min-width:64px;min-height:52px;
    font-size:13px;padding:9px 4px;border-radius:14px;
    -webkit-text-stroke:0;              /* 小字号不加描边, 避免发糊 */
  }
  .page.what .wheel-node::after{right:8px;bottom:4px;font-size:13px}
  .page.what .wheel-center{font-size:13px;inset:32%}
  .wheel-hint{display:flex;font-size:12px;margin-top:clamp(9px,1.4vh,15px);gap:8px}
  .wheel-hint::before,.wheel-hint::after{width:16px}

  /* ---- 07 来路: 保持与电脑端一致的竖线时间轴 ---- */
  /* 副标题间距与排版: 与「向阳寄语」页 .letter-sub 完全一致 */
  .page.story .sec-title{margin-bottom:0}
  .page.story .story-sub{
    display:block;
    margin:10px 0 clamp(15px,3vh,26px);
    font-size:13px;line-height:1.6;letter-spacing:.04em;
  }
  .timeline{padding-left:26px;max-width:100%}
  .tl-item{padding-bottom:clamp(16px,2.6vh,26px)}
  .tl-item::before{left:-24px;top:6px;width:12px;height:12px}
  .tl-year{font-size:20px}
  .tl-name{font-size:15.5px}
  .tl-item p{font-size:13.5px;margin-top:6px;line-height:1.75}

  /* ---- 08 陪跑现场: 圆形照片墙 (5 列交错漂移 + 圆形边缘羽化) ---- */
  .page.proof{
    justify-content:center;
    padding-top:clamp(56px,8vh,84px);
    padding-bottom:calc(clamp(24px,5vh,44px) + env(safe-area-inset-bottom,0px));
    overflow:hidden;
  }
  /* 标题固定句式: 「向阳说千遍，」/「不如同学说一遍」两行, 在逗号处断行 */
  .page.proof .sec-title{line-height:1.42}
  .page.proof .sec-title .title-br{display:block}
  .page.proof .proof-sub{font-size:11px;margin:0 0 6px}
  .proof-kpi{
    display:block;text-align:center;
    font-size:12.5px;font-weight:600;color:var(--green-deep);
    letter-spacing:.04em;margin:0 0 10px;
  }
  /* 手机端: 隐藏电脑端 5 列墙, 只用 3 列宽图墙 (列更宽→图更大→单列内容必然高于圆高, 循环不断) */
  .evidence-wall:not(.is-m){display:none}
  .evidence-wall.is-m{
    display:flex;
    flex:0 0 auto;min-height:0;
    width:min(400px,92vw,50vh);
    height:auto;aspect-ratio:1;
    margin:0 auto;
    display:flex;align-items:flex-start;gap:6px;
    padding:0;border-radius:0;background:transparent;border:0;
    overflow:hidden;
    /* 圆形构图: closest-side = 半径取内切圆, 中间清晰, 边缘一圈渐变羽化融入背景 */
    -webkit-mask-image:radial-gradient(circle closest-side at 50% 50%,#000 0 74%,rgba(0,0,0,.62) 90%,rgba(0,0,0,.2) 97%,transparent 100%);
    mask-image:radial-gradient(circle closest-side at 50% 50%,#000 0 74%,rgba(0,0,0,.62) 90%,rgba(0,0,0,.2) 97%,transparent 100%);
  }
  .evidence-wall::before,.evidence-wall::after{display:none}
  /* 列恢复电脑端同款漂移: 奇数向上 / 偶数向下, 单向循环无缝 */
  .evidence-col{flex:1;display:flex;flex-direction:column;gap:6px;align-self:flex-start}
  .evidence-col:nth-child(1){animation:evidenceDriftUp 34s linear infinite;margin-top:0}
  .evidence-col:nth-child(2){animation:evidenceDriftDown 40s linear infinite;margin-top:-24px}
  .evidence-col:nth-child(3){animation:evidenceDriftUp 38s linear infinite;margin-top:-12px}
  .evidence-col:nth-child(4){animation:evidenceDriftDown 44s linear infinite;margin-top:-30px}
  .evidence-col:nth-child(5){animation:evidenceDriftUp 42s linear infinite;margin-top:-6px}
  /* 卡片: 白底小圆角, 图片随卡片等比缩放、完整显示、不裁剪 */
  .evidence-wall .evidence-card{
    position:relative;border-radius:5px;overflow:hidden;background:#fff;
    box-shadow:0 1px 6px rgba(26,125,125,.07);
  }
  .evidence-wall .evidence-col .evidence-card img,
  .evidence-wall .evidence-col:nth-child(2) .evidence-card:nth-child(3n) img,
  .evidence-wall .evidence-col:nth-child(4) .evidence-card:nth-child(3n+1) img{
    position:static;inset:auto;aspect-ratio:auto;
    width:100%;height:auto;max-height:none;
    object-fit:contain;object-position:center;
  }
  .evidence-stats{display:none}

  /* ---- 09 FAQ ---- */
  .faq-q{font-size:15px;padding:16px}
  .faq-item{border-radius:14px}
  .faq-a p{font-size:13.5px}
  .faq-toggle{width:26px;height:26px;font-size:17px}

  /* ---- 10 结尾: 沿用原白底, 仅放大二维码 ---- */
  .page.finale .finale-title{font-size:clamp(26px,7.6vw,34px)}
  .page.finale .finale-qr{width:min(230px,62vw)}

  /* ---- 灯箱 / 圆点 ---- */
  .pic-lb-stage{max-width:92vw}
  .pic-lb-stage img{max-height:74vh;padding:8px;border-radius:14px}
  .pic-lb-cap{font-size:12.5px;margin-top:12px}
  .pic-lb-btn{position:fixed;width:40px;height:40px;background:rgba(0,0,0,.42)}
  .pic-lb-prev{left:10px;top:50%}
  .pic-lb-next{right:10px;top:50%}
  .pic-lb-close{
    position:fixed;top:calc(14px + env(safe-area-inset-top,0px));right:14px;
    width:38px;height:38px;background:rgba(0,0,0,.42);
  }
  /* 圆点让出右侧安全区: 贴屏边放 + 去掉向外扩散的激活光晕。
     原来 right:7px 时圆点外框离满宽卡片只剩 3.5px, 激活态 scale(1.5)
     叠加 0 0 0 4px 光晕后会横向扩到卡片边框上 => 看着像"和寄语框重叠"。
     现在: 圆点 7px 贴边 3px, 激活只靠放大+实心色区分, 不向外发光。 */
  .page-dots{right:3px;gap:10px}
  .page-dots button{width:7px;height:7px;position:relative}
  .page-dots button::after{content:"";position:absolute;inset:-7px}  /* 补足手指热区, 视觉尺寸不变 */
  .page-dots button.is-active{transform:scale(1.5);box-shadow:none}

  /* ---- 飞轮详情弹窗 ---- */
  /* 底部抽屉的定位 / 圆角 / 入场位移 / 顶部把手都来自 tokens.css 的 .modal-panel */
  .wheel-panel{
    max-width:100vw;max-height:84vh;
    padding:30px 22px calc(26px + env(safe-area-inset-bottom,0px));
  }
  .wheel-close{top:18px;right:18px}
  .wheel-panel-title{font-size:22px;margin:12px 0 8px}
  .wheel-panel-lead{font-size:13.5px}
  .wheel-panel-points{margin-top:20px;gap:12px}
  .wheel-panel-points li{font-size:13.5px;line-height:1.75;padding-left:24px}
  .wheel-panel-points li::before{top:6px;width:14px;height:14px}
  .wheel-panel-points li::after{left:4.5px;top:10.5px;width:5px;height:5px}
  .wheel-panel-note{margin-top:22px;font-size:11.5px}
}

/* =========================================================
 * 脚本失败兜底 (html.js-error 由 index.html 里 script 的 onerror
 * 或 js/about.js 的 try/catch 补上)
 * ---------------------------------------------------------
 * 一旦交互脚本没跑起来: 正文不能白、折叠的内容要全部铺开 ——
 * 页面上所有"默认收起/默认透明"的地方都必须在这里放开。
 * ========================================================= */
html.js-error .faq-a{max-height:none;overflow:visible}
html.js-error .letter-bubble{
  max-height:none;overflow:visible;
  -webkit-mask-image:none;mask-image:none;
}
html.js-error .hero-scroll,
html.js-error .letter-toggle{display:none}
html.js-error .page-dots{display:none}

/* =========================================================
 * 极矮屏兜底 (如 320×568, iPhone SE 一代): 内容高于一屏时
 * 收紧「来路」页时间轴间距, 保证整页吸附不露半页。
 * 只压时间轴本身, 副标题的间距公式保持不变(与其他页一致)。
 * ========================================================= */
@media (max-width:768px) and (max-height:620px){
  .page.story{padding-top:clamp(56px,9.5vh,80px);padding-bottom:clamp(20px,4vh,34px)}
  .page.story .tl-item{padding-bottom:10px}
  .page.story .tl-item p{font-size:13px;margin-top:4px;line-height:1.7}
}