/* ============================================================
   云栖·山居 H5  |  样式表
   ============================================================ */

/* ---------- 设计变量 ---------- */
:root{
  --ink:        #22322c;
  --ink-2:      #46574f;
  --muted:      #7d8b83;
  --green:      #2f4f43;
  --green-deep: #1c352c;
  --wood:       #b8865b;
  --gold:       #c9a227;
  --cream:      #f7f4ee;
  --cream-2:    #efe9df;
  --white:      #ffffff;

  --line:  rgba(34,50,44,.10);
  --shadow-sm: 0 4px 14px rgba(31,52,44,.07);
  --shadow:    0 14px 34px rgba(31,52,44,.11);
  --shadow-lg: 0 24px 60px rgba(20,38,30,.20);

  --r-sm: 12px;
  --r:    18px;
  --r-lg: 26px;

  --pad: 22px;
  --maxw: 480px;
  --safe-b: env(safe-area-inset-bottom, 0px);

  --ease: cubic-bezier(.22,.68,.28,1);
}

/* ---------- 基础重置 ---------- */
*,*::before,*::after{ box-sizing:border-box; }
html,body{ margin:0; padding:0; }
html{
  scroll-behavior:smooth;
  scroll-padding-top:64px;
  -webkit-text-size-adjust:100%;
}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB",
              "Microsoft YaHei","Noto Sans SC",sans-serif;
  color:var(--ink);
  background:#e6e1d6;
  line-height:1.7;
  font-size:15px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
button,input,select,textarea{ font:inherit; color:inherit; }
h1,h2,h3,h4,p{ margin:0; }
ul{ margin:0; padding:0; list-style:none; }

/* 手机外框：桌面端居中显示 */
.app{
  position:relative;
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  background:var(--cream);
  box-shadow:var(--shadow-lg);
  overflow:hidden;
  min-height:100vh;
}

/* ---------- 顶部导航 ---------- */
.nav{
  position:fixed; top:0; left:50%; transform:translateX(-50%);
  z-index:60;
  width:100%; max-width:var(--maxw);
  height:56px;
  display:flex; align-items:center; justify-content:space-between;
  padding:0 var(--pad);
  color:#fff;
  transition:background .35s var(--ease), color .35s var(--ease), box-shadow .35s var(--ease);
}
.nav__logo{
  font-size:16px; font-weight:700; letter-spacing:.14em;
  display:flex; align-items:center; gap:8px;
}
.nav__logo svg{
  width:18px; height:18px;
  fill:none; stroke:currentColor; stroke-width:1.7;
  stroke-linecap:round; stroke-linejoin:round;
}
.nav__btn{
  font-size:13px; padding:7px 16px; border-radius:999px;
  border:1px solid rgba(255,255,255,.6);
  letter-spacing:.06em;
  backdrop-filter:blur(6px);
  transition:.3s var(--ease);
}
.nav__btn:active{ transform:scale(.94); }
.nav.is-solid{
  background:rgba(247,244,238,.88);
  backdrop-filter:blur(14px) saturate(1.4);
  -webkit-backdrop-filter:blur(14px) saturate(1.4);
  color:var(--ink);
  box-shadow:0 1px 0 var(--line);
}
.nav.is-solid .nav__btn{
  border-color:rgba(47,79,67,.32);
  color:var(--green);
  font-weight:600;
}

/* ---------- 通用：区块与标题 ---------- */
.sec{ padding:56px var(--pad); position:relative; }
.sec--tight{ padding-top:44px; }
.sec--cream2{ background:var(--cream-2); }
.sec--green{ background:var(--green); color:#eef3ee; }

.eyebrow{
  display:flex; align-items:center; gap:10px;
  font-size:11px; letter-spacing:.28em; text-transform:uppercase;
  color:var(--wood); font-weight:700; margin-bottom:12px;
}
.eyebrow::before{
  content:""; width:26px; height:1px; background:currentColor; opacity:.7;
}
.sec--green .eyebrow,
.book .eyebrow{ color:var(--gold); }

.sec-title{
  font-size:26px; line-height:1.35; font-weight:800;
  letter-spacing:.02em; margin-bottom:10px;
}
.sec-title em{ font-style:normal; color:var(--green); }
.sec--green .sec-title em,
.book .sec-title em{ color:var(--gold); }

.sec-sub{ font-size:13.5px; color:var(--muted); line-height:1.9; }
.sec--green .sec-sub{ color:rgba(238,243,238,.72); }

/* ---------- 图片块（占位 / 真实照片通用） ---------- */
.ph{
  position:relative; overflow:hidden; background:#ded7c9;
  background-size:cover; background-position:center;
  display:grid; place-items:center;
}
.ph::after{
  content:""; position:absolute; inset:0; pointer-events:none;
  box-shadow:inset 0 0 90px rgba(24,40,32,.22);
}
.ph-glyph{
  font-family:Georgia,"Songti SC","STSong",serif;
  font-size:86px; line-height:1; color:rgba(255,255,255,.20);
  font-weight:700; letter-spacing:.06em;
  text-shadow:0 2px 20px rgba(0,0,0,.08);
  user-select:none;
}

/* ============================================================
   1. 首屏
   ============================================================ */
.hero{
  position:relative; min-height:100svh;
  display:flex; flex-direction:column; justify-content:flex-end;
  overflow:hidden;
  background:
    radial-gradient(120% 62% at 76% 16%, rgba(255,226,170,.95) 0%, rgba(255,196,140,.55) 26%, rgba(255,196,140,0) 58%),
    radial-gradient(90% 50% at 18% 8%,  rgba(255,238,205,.55) 0%, rgba(255,238,205,0) 60%),
    linear-gradient(180deg,#f8dcaa 0%, #f0b077 16%, #d98a70 34%, #9a6a7e 54%, #4d5570 74%, #25313f 100%);
}
.hero__sun{
  position:absolute; top:14%; right:19%;
  width:74px; height:74px; border-radius:50%;
  background:radial-gradient(circle at 40% 38%, #fff6e0, #ffd489 52%, rgba(255,190,110,0) 74%);
  filter:blur(.4px);
  animation:sunPulse 7s var(--ease) infinite;
}
@keyframes sunPulse{
  0%,100%{ transform:scale(1); opacity:.92; }
  50%    { transform:scale(1.1); opacity:1; }
}
.hero__hills{ position:absolute; left:0; right:0; bottom:0; width:100%; height:64%; }
.hero__hills svg{ width:100%; height:100%; display:block; }
.hero__mist{
  position:absolute; left:-20%; right:-20%; bottom:26%; height:120px;
  background:radial-gradient(closest-side,rgba(255,255,255,.34),rgba(255,255,255,0) 78%);
  filter:blur(12px);
  animation:mist 26s linear infinite alternate;
}
@keyframes mist{
  from{ transform:translateX(-6%); }
  to  { transform:translateX(6%); }
}

.hero__inner{
  position:relative; z-index:3;
  padding:0 var(--pad) calc(34px + var(--safe-b));
  color:#fff;
}
.hero__badge{
  display:inline-flex; align-items:center; gap:7px;
  font-size:11.5px; letter-spacing:.14em;
  padding:6px 13px; border-radius:999px;
  background:rgba(255,255,255,.16);
  border:1px solid rgba(255,255,255,.34);
  backdrop-filter:blur(8px);
  margin-bottom:18px;
}
.hero__badge i{
  width:5px; height:5px; border-radius:50%; background:#ffe0a3;
  box-shadow:0 0 0 4px rgba(255,224,163,.22);
  animation:dot 2.4s ease-in-out infinite;
}
@keyframes dot{ 0%,100%{opacity:1} 50%{opacity:.3} }

.hero__title{
  font-size:40px; line-height:1.16; font-weight:900;
  letter-spacing:.06em;
  text-shadow:0 4px 26px rgba(20,34,28,.34);
}
.hero__title span{
  display:block; font-size:15px; font-weight:400; letter-spacing:.4em;
  opacity:.82; margin-top:14px; text-shadow:none;
}
.hero__desc{
  margin-top:16px; font-size:13.5px; line-height:1.95;
  color:rgba(255,255,255,.86);
  max-width:19em;
  text-shadow:0 2px 12px rgba(20,34,28,.3);
}
.hero__meta{
  display:flex; gap:22px; margin-top:24px; flex-wrap:wrap;
}
.hero__meta div{ display:flex; flex-direction:column; }
.hero__meta b{ font-size:19px; font-weight:800; letter-spacing:.02em; }
.hero__meta small{ font-size:11px; opacity:.72; letter-spacing:.1em; }

.hero__scroll{
  position:absolute; left:50%; bottom:10px; transform:translateX(-50%);
  z-index:4; width:22px; height:34px;
  border:1.5px solid rgba(255,255,255,.55); border-radius:12px;
}
.hero__scroll::after{
  content:""; position:absolute; left:50%; top:6px;
  width:3px; height:6px; border-radius:2px; background:#fff;
  transform:translateX(-50%);
  animation:wheel 1.9s var(--ease) infinite;
}
@keyframes wheel{
  0%  { opacity:0; transform:translate(-50%,0); }
  30% { opacity:1; }
  100%{ opacity:0; transform:translate(-50%,12px); }
}

/* ============================================================
   2. 关于
   ============================================================ */
.about__text{
  font-size:14.5px; line-height:2.05; color:var(--ink-2);
  margin-top:16px;
}
.about__text p + p{ margin-top:14px; }
.about__sign{
  margin-top:18px; font-family:Georgia,"Songti SC",serif;
  font-size:13px; color:var(--wood); letter-spacing:.14em;
}
.stats{
  display:grid; grid-template-columns:repeat(4,1fr);
  margin-top:28px; padding:20px 0;
  border-top:1px solid var(--line); border-bottom:1px solid var(--line);
}
.stats div{ text-align:center; }
.stats b{
  display:block; font-size:21px; font-weight:800; color:var(--green);
  letter-spacing:-.01em;
}
.stats b i{ font-size:12px; font-style:normal; font-weight:600; margin-left:1px; }
.stats small{ font-size:10.5px; color:var(--muted); letter-spacing:.08em; }

/* ============================================================
   3. 房型（横向滑动）
   ============================================================ */
.rooms{
  display:flex; gap:14px;
  overflow-x:auto; scroll-snap-type:x mandatory;
  padding:6px var(--pad) 10px;
  margin:0 calc(var(--pad) * -1);
  -webkit-overflow-scrolling:touch;
  scrollbar-width:none;
}
.rooms::-webkit-scrollbar{ display:none; }

.room{
  flex:0 0 76%;
  scroll-snap-align:center;
  background:var(--white);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--shadow-sm);
  border:1px solid var(--line);
  transition:transform .45s var(--ease), box-shadow .45s var(--ease);
}
.room:active{ transform:scale(.985); }
.room__ph{ height:172px; }
.room__body{ padding:16px 17px 18px; }
.room__top{
  display:flex; align-items:flex-start; justify-content:space-between; gap:10px;
}
.room__name{ font-size:16.5px; font-weight:800; letter-spacing:.01em; }
.room__en{
  font-size:10px; letter-spacing:.2em; text-transform:uppercase;
  color:var(--muted); margin-top:3px; font-weight:600;
}
.room__price{ text-align:right; white-space:nowrap; }
.room__price b{ font-size:19px; font-weight:900; color:#b3452f; }
.room__price b i{ font-size:12px; font-style:normal; }
.room__price small{ display:block; font-size:10px; color:var(--muted); }

.room__tags{ display:flex; flex-wrap:wrap; gap:6px; margin-top:13px; }
.room__tags span{
  font-size:11px; color:var(--green);
  background:rgba(47,79,67,.07);
  border:1px solid rgba(47,79,67,.11);
  padding:3.5px 9px; border-radius:6px;
  letter-spacing:.02em;
}
.room__foot{
  display:flex; align-items:center; justify-content:space-between;
  margin-top:15px; padding-top:13px; border-top:1px dashed var(--line);
}
.room__stock{ font-size:11.5px; color:var(--muted); }
.room__stock b{ color:#b3452f; font-weight:700; }
.room__go{
  font-size:12.5px; font-weight:700; color:var(--green);
  display:inline-flex; align-items:center; gap:4px;
}
.room__go svg{
  width:13px; height:13px;
  fill:none; stroke:currentColor; stroke-width:2.4;
  stroke-linecap:round; stroke-linejoin:round;
}

.dots{ display:flex; justify-content:center; gap:6px; margin-top:6px; }
.dots i{
  width:6px; height:6px; border-radius:999px;
  background:rgba(47,79,67,.2); transition:.35s var(--ease);
}
.dots i.on{ width:18px; background:var(--green); }

/* ============================================================
   4. 设施
   ============================================================ */
.facility{
  display:grid; grid-template-columns:repeat(3,1fr); gap:12px;
  margin-top:26px;
}
.fac{
  background:var(--white); border:1px solid var(--line);
  border-radius:var(--r); padding:17px 8px 15px;
  text-align:center;
  transition:transform .4s var(--ease), box-shadow .4s var(--ease);
}
.fac:active{ transform:translateY(-3px); box-shadow:var(--shadow-sm); }
.fac__ico{
  width:34px; height:34px; margin:0 auto 9px;
  display:grid; place-items:center;
  border-radius:11px;
  background:rgba(47,79,67,.07);
  color:var(--green);
}
.fac__ico svg{
  width:18px; height:18px;
  fill:none; stroke:currentColor; stroke-width:1.6;
  stroke-linecap:round; stroke-linejoin:round;
}
.fac b{ display:block; font-size:12.5px; font-weight:700; letter-spacing:.01em; }
.fac small{ font-size:10px; color:var(--muted); }

/* ============================================================
   5. 周边（时间轴）
   ============================================================ */
.timeline{ position:relative; margin-top:26px; padding-left:22px; }
.timeline::before{
  content:""; position:absolute; left:5px; top:6px; bottom:6px;
  width:1px;
  background:linear-gradient(180deg,rgba(201,162,39,.7),rgba(201,162,39,.12));
}
.tl{ position:relative; padding-bottom:22px; }
.tl:last-child{ padding-bottom:0; }
.tl::before{
  content:""; position:absolute; left:-22px; top:7px;
  width:11px; height:11px; border-radius:50%;
  background:var(--green); border:2.5px solid var(--cream);
  box-shadow:0 0 0 1px rgba(201,162,39,.5);
}
.sec--green .tl::before{ border-color:var(--green); background:var(--gold); }
.tl__head{
  display:flex; align-items:baseline; justify-content:space-between; gap:12px;
}
.tl b{ font-size:14.5px; font-weight:700; }
.tl__dist{
  font-size:11px; font-weight:700; color:var(--gold);
  letter-spacing:.06em; white-space:nowrap;
}
.tl p{ font-size:12.5px; color:rgba(238,243,238,.66); margin-top:3px; line-height:1.8; }

/* ============================================================
   6. 评价
   ============================================================ */
.review{
  background:var(--white); border:1px solid var(--line);
  border-radius:var(--r); padding:17px;
  box-shadow:var(--shadow-sm);
}
.review + .review{ margin-top:12px; }
.review__head{ display:flex; align-items:center; gap:11px; }
.review__av{
  width:38px; height:38px; border-radius:50%;
  display:grid; place-items:center;
  font-size:15px; font-weight:700; color:#fff;
  background:linear-gradient(135deg,var(--green),#5d8a72);
  flex:0 0 auto;
}
.review__av--b{ background:linear-gradient(135deg,#b8865b,#d9b183); }
.review__av--c{ background:linear-gradient(135deg,#7a6a9a,#a89ac4); }
.review__who b{ font-size:13.5px; font-weight:700; display:block; }
.review__who small{ font-size:10.5px; color:var(--muted); }
.stars{ margin-left:auto; color:var(--gold); font-size:11px; letter-spacing:2px; }
.review p{ font-size:13px; line-height:1.95; color:var(--ink-2); margin-top:12px; }
.review__room{
  display:inline-block; margin-top:11px; font-size:10.5px; color:var(--muted);
  border:1px solid var(--line); border-radius:6px; padding:2.5px 8px;
}

/* ============================================================
   7. 地图 / 交通
   ============================================================ */
.map{
  position:relative; height:180px; border-radius:var(--r);
  overflow:hidden; margin-top:24px;
  background:
    repeating-linear-gradient(0deg,rgba(47,79,67,.07) 0 1px,transparent 1px 26px),
    repeating-linear-gradient(90deg,rgba(47,79,67,.07) 0 1px,transparent 1px 26px),
    linear-gradient(135deg,#eae4d8,#dfe6dc);
  border:1px solid var(--line);
}
.map::before{
  content:""; position:absolute; left:-10%; top:38%; width:130%; height:22px;
  background:rgba(255,255,255,.85); transform:rotate(-11deg);
  box-shadow:0 0 0 1px rgba(47,79,67,.06);
}
.map::after{
  content:""; position:absolute; left:52%; top:-10%; width:16px; height:130%;
  background:rgba(255,255,255,.75); transform:rotate(6deg);
}
.map__pin{
  position:absolute; left:50%; top:44%; transform:translate(-50%,-100%);
  z-index:2; text-align:center;
}
.map__pin svg{
  width:30px; height:30px; color:#b3452f;
  filter:drop-shadow(0 4px 8px rgba(0,0,0,.2));
}
.map__pin b{
  display:block; font-size:11px; font-weight:700; color:var(--green);
  background:rgba(255,255,255,.92); border-radius:6px; padding:2px 7px;
  margin-top:2px; white-space:nowrap;
}
.map__pulse{
  position:absolute; left:50%; top:44%; transform:translate(-50%,-50%);
  width:16px; height:16px; border-radius:50%;
  background:rgba(179,69,47,.35);
  animation:pulse 2.4s var(--ease) infinite;
}
@keyframes pulse{
  0%  { transform:translate(-50%,-50%) scale(.6); opacity:.9; }
  100%{ transform:translate(-50%,-50%) scale(3.4); opacity:0; }
}

.info-list{ margin-top:20px; }
.info{
  display:flex; gap:13px; padding:14px 0;
  border-bottom:1px solid var(--line);
}
.info:last-child{ border-bottom:0; }
.info__ico{
  flex:0 0 auto; width:32px; height:32px; border-radius:10px;
  display:grid; place-items:center;
  background:rgba(184,134,91,.12); color:var(--wood);
}
.info__ico svg{
  width:17px; height:17px;
  fill:none; stroke:currentColor; stroke-width:1.6;
  stroke-linecap:round; stroke-linejoin:round;
}
.info__txt b{ display:block; font-size:11px; color:var(--muted); letter-spacing:.1em; font-weight:700; }
.info__txt p{ font-size:13.5px; line-height:1.75; margin-top:2px; }

/* ============================================================
   8. 预订
   ============================================================ */
.book{
  background:linear-gradient(165deg,var(--green) 0%, var(--green-deep) 100%);
  color:#eef3ee; padding:44px var(--pad) 52px;
  position:relative; overflow:hidden;
}
.book::before{
  content:""; position:absolute; right:-70px; top:-70px;
  width:220px; height:220px; border-radius:50%;
  background:radial-gradient(circle,rgba(201,162,39,.22),transparent 68%);
}
.book__form{
  position:relative; margin-top:24px;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r-lg);
  padding:18px 16px;
  backdrop-filter:blur(6px);
}
.field{ margin-bottom:13px; }
.field label{
  display:block; font-size:11px; letter-spacing:.14em;
  color:rgba(238,243,238,.62); font-weight:600; margin-bottom:6px;
}
.field input, .field select{
  width:100%; height:44px; padding:0 13px;
  background:rgba(255,255,255,.94);
  border:1px solid transparent; border-radius:11px;
  font-size:14px; color:var(--ink);
  outline:none; appearance:none;
  transition:border-color .25s var(--ease), box-shadow .25s var(--ease);
}
.field select{
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%232f4f43' stroke-width='2.4' stroke-linecap='round'><path d='M6 9l6 6 6-6'/></svg>");
  background-repeat:no-repeat; background-position:right 13px center;
  padding-right:34px;
}
.field input:focus, .field select:focus{
  border-color:var(--gold);
  box-shadow:0 0 0 3px rgba(201,162,39,.24);
}
/* 服务端校验未通过的字段 */
.field input.is-invalid,
.field select.is-invalid{
  border-color:#d0604f;
  box-shadow:0 0 0 3px rgba(208,96,79,.24);
}
.field-row{ display:grid; grid-template-columns:1fr 1fr; gap:11px; }

.btn-book{
  width:100%; height:50px; margin-top:6px;
  border:0; border-radius:13px; cursor:pointer;
  background:linear-gradient(135deg,#e0b84e,#c9a227);
  color:#2a2312; font-size:15.5px; font-weight:800;
  letter-spacing:.08em;
  box-shadow:0 10px 24px rgba(201,162,39,.3);
  transition:transform .3s var(--ease), box-shadow .3s var(--ease), opacity .3s var(--ease);
}
.btn-book:active{ transform:translateY(2px) scale(.99); box-shadow:0 4px 12px rgba(201,162,39,.28); }
.btn-book[disabled]{ opacity:.6; cursor:not-allowed; transform:none; }
.book__tip{
  text-align:center; font-size:11px; color:rgba(238,243,238,.5);
  margin-top:12px; letter-spacing:.04em;
}

/* ---------- PHP 回显的提示条 ---------- */
.alert{
  position:relative; margin-top:18px;
  padding:14px 16px; border-radius:14px;
  font-size:13px; line-height:1.8;
  border:1px solid transparent;
}
.alert strong{ display:block; font-size:13.5px; font-weight:700; }
.alert ul{ margin:8px 0 0; padding-left:17px; list-style:disc; }
.alert li{ margin-top:3px; font-size:12.5px; }
.alert--ok{
  background:rgba(126,214,164,.13);
  border-color:rgba(126,214,164,.34);
  color:#c3ecd3;
}
.alert--err{
  background:rgba(255,150,130,.12);
  border-color:rgba(255,150,130,.32);
  color:#ffc9bd;
}

/* ============================================================
   9. 页脚
   ============================================================ */
.footer{
  background:#16261f; color:rgba(255,255,255,.6);
  padding:34px var(--pad) calc(96px + var(--safe-b));
  font-size:12px; line-height:2;
}
.footer__brand{
  color:#fff; font-size:16px; font-weight:800; letter-spacing:.18em;
  margin-bottom:12px;
}
.footer__row{ display:flex; gap:8px; }
.footer__row span:first-child{ color:rgba(255,255,255,.36); flex:0 0 44px; }
.footer__copy{
  margin-top:20px; padding-top:16px;
  border-top:1px solid rgba(255,255,255,.1);
  font-size:10.5px; color:rgba(255,255,255,.34); line-height:1.9;
}

/* ============================================================
   10. 底部固定操作条 / 回到顶部 / 提示
   ============================================================ */
.bar{
  position:fixed; left:50%; transform:translateX(-50%);
  bottom:0; z-index:70;
  width:100%; max-width:var(--maxw);
  padding:10px var(--pad) calc(10px + var(--safe-b));
  display:flex; align-items:center; gap:10px;
  background:rgba(247,244,238,.92);
  backdrop-filter:blur(16px) saturate(1.4);
  -webkit-backdrop-filter:blur(16px) saturate(1.4);
  border-top:1px solid var(--line);
  transition:transform .45s var(--ease);
}
.bar__price{ flex:1 1 auto; min-width:0; }
.bar__price b{ font-size:19px; font-weight:900; color:#b3452f; }
.bar__price b i{ font-size:12px; font-style:normal; }
.bar__price small{ display:block; font-size:10px; color:var(--muted); line-height:1.4; }
.bar__btn{
  height:44px; padding:0 20px; border:0; border-radius:12px;
  font-size:14px; font-weight:700; cursor:pointer;
  display:inline-flex; align-items:center; justify-content:center; gap:6px;
  transition:transform .25s var(--ease);
}
.bar__btn:active{ transform:scale(.95); }
.bar__btn--ghost{
  background:rgba(47,79,67,.08); color:var(--green);
  border:1px solid rgba(47,79,67,.16);
}
.bar__btn--main{
  background:var(--green); color:#fff;
  box-shadow:0 8px 18px rgba(47,79,67,.28);
}

.totop{
  position:fixed; right:calc(50% - var(--maxw)/2 + 14px); bottom:calc(84px + var(--safe-b));
  z-index:65;
  width:40px; height:40px; border-radius:50%;
  border:1px solid var(--line);
  background:rgba(255,255,255,.9);
  color:var(--green);
  display:grid; place-items:center; cursor:pointer;
  box-shadow:var(--shadow-sm);
  opacity:0; pointer-events:none;
  transform:translateY(10px);
  transition:.4s var(--ease);
}
.totop.show{ opacity:1; pointer-events:auto; transform:none; }
.totop svg{
  width:17px; height:17px;
  fill:none; stroke:currentColor; stroke-width:2.2;
  stroke-linecap:round; stroke-linejoin:round;
}

.toast{
  position:fixed; left:50%; bottom:calc(88px + var(--safe-b));
  transform:translate(-50%,14px);
  z-index:99;
  max-width:78%;
  background:rgba(24,36,30,.94); color:#fff;
  font-size:13px; line-height:1.6;
  padding:11px 18px; border-radius:12px;
  box-shadow:0 12px 30px rgba(0,0,0,.24);
  opacity:0; pointer-events:none;
  transition:.36s var(--ease);
}
.toast.show{ opacity:1; transform:translate(-50%,0); }

/* ---------- 响应式微调 ---------- */
@media (max-width:520px){
  .totop{ right:14px; }
}
@media (max-width:360px){
  .stats{ grid-template-columns:repeat(2,1fr); row-gap:16px; }
  .facility{ grid-template-columns:repeat(2,1fr); }
  .hero__title{ font-size:34px; }
}

/* ---------- 入场动画 ---------- */
.reveal{
  opacity:0; transform:translateY(26px);
  transition:opacity .8s var(--ease), transform .8s var(--ease);
  will-change:opacity, transform;
}
.reveal.in{ opacity:1; transform:none; }

@media (prefers-reduced-motion:reduce){
  *{ animation-duration:.001ms !important; transition-duration:.001ms !important; }
  html{ scroll-behavior:auto; }
  .reveal{ opacity:1; transform:none; }
}