*{box-sizing:border-box;}
:root{--kyyeu-accent:#D6342A; --kyyeu-heading-font:'Cormorant Garamond',serif; --kyyeu-heading-scale:1;
      --summer-sun:#F5B942; --summer-leaf:#4A7A32;}
html{background:#FDF4E4;}
body{margin:0; color:#4A2E22; font-family:'Literata',serif; line-height:1.8; overflow-x:hidden;
  background:var(--kyyeu-bg,
    radial-gradient(ellipse 60% 40% at 78% 4%, rgba(245,185,66,.28), transparent 58%),
    linear-gradient(180deg,#FEF8EA 0%,#FBECD4 45%,#F6DEBE 100%));}
.wrap{max-width:720px; margin:0 auto; position:relative; z-index:4;}
@media (prefers-reduced-motion: reduce){ .petal-canvas{opacity:.4;} .sun-rays,.heat-haze{animation:none !important;} }

.petal-canvas{position:fixed; inset:0; z-index:2; pointer-events:none;}
.sun-rays{position:fixed; inset:0; z-index:1; pointer-events:none;
  background:conic-gradient(from 200deg at 78% 2%,
    transparent 0deg 8deg, rgba(245,185,66,.13) 8deg 12deg, transparent 12deg 22deg,
    rgba(245,185,66,.1) 22deg 26deg, transparent 26deg 40deg,
    rgba(245,185,66,.12) 40deg 44deg, transparent 44deg 62deg);
  animation:raysDrift 22s ease-in-out infinite;}
@keyframes raysDrift{0%,100%{opacity:.7; transform:rotate(0);} 50%{opacity:1; transform:rotate(2.5deg);}}
.heat-haze{position:fixed; left:0; right:0; bottom:0; height:34%; z-index:1; pointer-events:none;
  background:linear-gradient(0deg, rgba(245,185,66,.1), transparent);
  animation:hazeWobble 6s ease-in-out infinite;}
@keyframes hazeWobble{0%,100%{transform:translateY(0) scaleY(1);} 50%{transform:translateY(-6px) scaleY(1.03);}}

.cover{padding:54px 22px 26px; text-align:center; position:relative; z-index:4;}
.eyebrow{font-size:10.5px; letter-spacing:.32em; color:var(--kyyeu-accent); margin-bottom:24px;}
.cover-photo{position:relative; width:190px; height:190px; margin:0 auto 22px; border-radius:50%; overflow:hidden;
  border:5px solid #FEF8EA; box-shadow:0 16px 34px rgba(74,46,34,.2);}
.cover-photo img{width:100%; height:100%; object-fit:cover; filter:saturate(1.12) contrast(1.04) brightness(1.03);}
.sun-flare{position:absolute; inset:0; pointer-events:none;
  background:radial-gradient(circle at 76% 18%, rgba(255,244,214,.72), transparent 44%);}
.cover h1{font-family:var(--kyyeu-heading-font); font-style:italic; font-weight:600;
  font-size:calc(42px * var(--kyyeu-heading-scale)); margin:0 0 10px; color:var(--kyyeu-accent);}
.summer-line{font-family:var(--kyyeu-heading-font); font-style:italic; font-size:16px; color:#8A5A3A; margin:0 0 12px;}
.cover-meta{margin:0 0 22px; font-size:13.5px; color:#8A5A3A;}

.cicada{max-width:340px; margin:0 auto;}
.cicada-wave{display:flex; align-items:center; justify-content:center; gap:3px; height:34px; margin-bottom:8px;}
.cicada-wave span{width:3px; border-radius:2px;
  background:linear-gradient(180deg, var(--summer-sun), var(--summer-leaf));
  animation:cicadaBuzz 0.6s ease-in-out infinite;}
@keyframes cicadaBuzz{0%,100%{transform:scaleY(.2); opacity:.45;} 50%{transform:scaleY(1); opacity:1;}}
.cicada-label{font-size:11.5px; color:#8A5A3A; font-style:italic; margin:0;}

.section{padding:54px 24px 8px; position:relative; z-index:4;}
.section-head{text-align:center; margin-bottom:30px;}
.section h2{font-family:var(--kyyeu-heading-font); font-style:italic; font-weight:600;
  font-size:calc(28px * var(--kyyeu-heading-scale)); color:var(--kyyeu-accent); margin:0 0 6px;}
.section .sub{font-size:12.5px; color:#8A5A3A;}

.summer-gallery{display:grid; grid-template-columns:repeat(3,1fr); gap:20px;}
.sun-frame{margin:0; opacity:0; transform:translateY(20px) scale(.97);
  transition:opacity .9s ease var(--d), transform .9s cubic-bezier(.2,.85,.3,1) var(--d);}
.sun-frame.blazed{opacity:1; transform:translateY(0) scale(1);}
.sf-inner{position:relative; border-radius:12px; overflow:hidden; box-shadow:0 12px 26px rgba(74,46,34,.2);}
.sf-inner img{width:100%; height:140px; object-fit:cover; display:block;
  filter:saturate(1.1) contrast(1.04); transition:transform .7s ease, filter .6s ease;}
.sun-frame:hover .sf-inner img{transform:scale(1.05); filter:saturate(1.2) brightness(1.05);}
.sf-glare{position:absolute; inset:0; pointer-events:none;
  background:linear-gradient(128deg, rgba(255,246,220,.36) 0%, transparent 40%);}
.sun-frame figcaption{text-align:center; font-size:12.5px; color:#8A5A3A; margin-top:10px; font-style:italic;}
@media(max-width:600px){.summer-gallery{grid-template-columns:repeat(2,1fr);}}

.see-full{text-align:center; margin:34px 0 0;}
.see-full a{font-family:var(--kyyeu-heading-font); font-style:italic; font-size:15px; color:var(--kyyeu-accent);
  text-decoration:none; border-bottom:1px solid rgba(214,52,42,.4); padding-bottom:2px;}

/* CÁNH PHƯỢNG ÉP — LẬT MẶT SAU */
.pressed-petals{display:flex; flex-wrap:wrap; justify-content:center; gap:24px; max-width:600px; margin:0 auto;}
.pressed-petal{width:132px; min-height:150px; cursor:pointer; perspective:800px;}
.pp-front,.pp-back{border-radius:10px; padding:18px 14px; text-align:center;
  background:#FEF8EA; box-shadow:0 8px 20px rgba(74,46,34,.16); backface-visibility:hidden;}
.pp-shape{display:block; width:56px; height:46px; margin:0 auto 10px;
  background:radial-gradient(circle at 35% 30%, #F2685C, var(--kyyeu-accent));
  border-radius:64% 12% 58% 18%; box-shadow:0 5px 12px rgba(214,52,42,.32);
  animation:petalSway 4.4s ease-in-out infinite; animation-delay:calc(var(--i) * .45s);}
@keyframes petalSway{0%,100%{transform:rotate(-9deg);} 50%{transform:rotate(9deg);}}
.pp-who{font-family:var(--kyyeu-heading-font); font-style:italic; font-size:13.5px; color:var(--kyyeu-accent);}
.pp-back{display:none; text-align:left;}
.pp-back p{margin:0; font-size:13px; color:#4A2E22; line-height:1.7;}
.pressed-petal.turned .pp-front{display:none;}
.pressed-petal.turned .pp-back{display:block; animation:flipIn .5s ease;}
@keyframes flipIn{from{opacity:0; transform:rotateY(-70deg);} to{opacity:1; transform:rotateY(0);}}

.exam-list{max-width:520px; margin:0 auto;}
.exam-row{display:flex; gap:16px; padding:16px 0; border-bottom:1px solid rgba(214,52,42,.14);}
.exam-row:last-child{border-bottom:none;}
.er-mark{font-size:18px; flex-shrink:0; animation:petalSway 5s ease-in-out infinite;}
.er-body strong{display:block; font-family:var(--kyyeu-heading-font); font-size:16.5px; color:#4A2E22; margin-bottom:3px;}
.er-body span{font-size:13.5px; color:#8A5A3A;}

.summer-notes{max-width:520px; margin:0 auto;}
.summer-note{background:#FEF8EA; border-radius:10px; padding:17px 20px; margin-bottom:14px;
  box-shadow:0 8px 18px rgba(74,46,34,.1); border-left:3px solid var(--kyyeu-accent);}
.summer-note p{margin:0 0 8px; font-size:14.5px; color:#4A2E22;}
.summer-note cite{font-family:var(--kyyeu-heading-font); font-style:italic; font-size:13.5px; color:var(--kyyeu-accent);}

.share{margin:58px 24px 30px; padding:42px 26px; text-align:center; border-radius:18px;
  background:linear-gradient(150deg,var(--kyyeu-accent),#9A1E18); color:#FEF8EA; position:relative; z-index:4;}
.share h2{font-family:var(--kyyeu-heading-font); font-style:italic; font-size:26px; margin:0 0 8px; color:var(--summer-sun);}
.share p{font-size:13px; margin:0 0 20px; opacity:.88;}
#qrcode{background:#fff; display:inline-block; padding:9px; border-radius:10px; margin-bottom:16px;}
.link-row{display:flex; justify-content:center; gap:8px; flex-wrap:wrap; font-size:12.5px;}
.link-row code{background:rgba(254,248,234,.16); padding:7px 13px; border-radius:20px;}
.link-row button{background:var(--summer-sun); color:#5A2A10; border:none; padding:7px 15px; border-radius:20px;
  font-size:12px; font-weight:700; cursor:pointer;}

.foot{text-align:center; font-size:11.5px; color:#8A5A3A; padding:0 20px 44px; position:relative; z-index:4;}

/* ============ TÍNH NĂNG ĐẶC BIỆT ============ */

/* 1. NHIỆT KẾ MÙA HÈ */
.heat-meter{max-width:420px; margin:0 auto;}
.hm-track{position:relative; height:22px; border-radius:12px; overflow:hidden;
  background:linear-gradient(90deg,#F5D98C,#F5B942,#E8763A,var(--kyyeu-accent));
  box-shadow:inset 0 2px 6px rgba(74,46,34,.2);}
.hm-marker{position:absolute; top:-6px; width:6px; height:34px; background:#4A2E22; border-radius:3px;
  transition:left 1.2s cubic-bezier(.3,.8,.3,1);}
.hm-scale{display:flex; justify-content:space-between; margin-top:8px; font-size:11px; color:#8A5A3A;}
.hm-read{text-align:center; margin-top:12px; font-family:var(--kyyeu-heading-font); font-size:20px; color:var(--kyyeu-accent);}

/* 3. SỔ TAY MÙA THI — TICK TỪNG MÔN */
.exam-checklist{max-width:480px; margin:0 auto; background:#FEF8EA; border-radius:12px; padding:10px 0;
  box-shadow:0 10px 24px rgba(74,46,34,.12);}
.ec-row{display:flex; align-items:center; gap:14px; padding:13px 22px; cursor:pointer;
  border-bottom:1px dashed rgba(214,52,42,.16); transition:background .3s ease;}
.ec-row:last-child{border-bottom:none;}
.ec-row:hover{background:rgba(245,185,66,.1);}
.ec-box{width:22px; height:22px; border:2px solid var(--kyyeu-accent); border-radius:5px; flex-shrink:0;
  position:relative; transition:background .3s ease;}
.ec-box::after{content:"✓"; position:absolute; inset:0; display:flex; align-items:center; justify-content:center;
  color:#fff; font-size:14px; font-weight:700; opacity:0; transform:scale(.4); transition:opacity .3s ease, transform .3s cubic-bezier(.3,1.6,.4,1);}
.ec-row.done .ec-box{background:var(--kyyeu-accent);}
.ec-row.done .ec-box::after{opacity:1; transform:scale(1);}
.ec-name{flex:1; font-size:14.5px; color:#4A2E22; transition:opacity .3s ease;}
.ec-row.done .ec-name{text-decoration:line-through; opacity:.5;}
.ec-date{font-size:12px; color:#8A5A3A; font-family:var(--kyyeu-heading-font);}
.ec-progress{text-align:center; padding:14px 0 6px; font-family:var(--kyyeu-heading-font);
  font-size:17px; color:var(--kyyeu-accent);}