@font-face{font-family:"LXGW WenKai";src:url("/textbook/LXGWWenKai-Regular.woff2") format("woff2");font-display:swap;font-weight:400;font-style:normal;}
:root{
  --paper:#fbf6ea;--card:#fffdf5;--ink:#2f2b26;--ink2:#57503f;--muted:#8d8778;
  --line:#e6dcc4;--line2:#efe7d2;--red:#9e2b25;--red-deep:#7f2019;--green:#3d6b52;
  --shadow:0 1px 2px rgba(47,43,38,.05),0 8px 24px -12px rgba(47,43,38,.18);
  --radius:8px;--maxw:1200px;
}
*{margin:0;padding:0;box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:88px;}
body{background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Helvetica Neue",Arial,sans-serif;font-size:15px;line-height:1.72;letter-spacing:.2px;-webkit-font-smoothing:antialiased;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
.kai{font-family:"LXGW WenKai","KaiTi","STKaiti","Kaiti SC",serif;letter-spacing:.5px;}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px;}

/* ---------- header ---------- */
.hd{position:sticky;top:0;z-index:50;background:rgba(251,246,234,.93);backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--line);}
.hd .wrap{display:flex;align-items:center;gap:30px;height:74px;max-width:100%;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand img{height:36px;width:auto;}
.nav{display:flex;gap:26px;flex:0 1 auto;min-width:0;overflow:hidden;}
.nav a{font-size:15px;color:var(--ink2);position:relative;padding:6px 0;white-space:nowrap;}
.nav a:hover{color:var(--red);}
.nav a::after{content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;background:var(--red);transition:right .22s ease;}
.nav a:hover::after{right:0;}
.hdright{margin-left:auto;display:flex;align-items:center;gap:14px;min-width:0;flex:1 1 auto;justify-content:flex-end;}
.searchbox{position:relative;width:260px;flex:0 1 260px;min-width:150px;}
.searchbox input{width:100%;height:40px;border:1px solid var(--line);background:var(--card);border-radius:20px;padding:0 40px 0 16px;font-size:14px;color:var(--ink);outline:none;font-family:inherit;}
.searchbox input:focus{border-color:#d9b96a;box-shadow:0 0 0 3px rgba(217,185,106,.18);}
.searchbox .mag{position:absolute;right:14px;top:11px;color:var(--muted);font-size:15px;}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;height:40px;padding:0 20px;border-radius:20px;font-size:14px;font-weight:500;transition:.18s;white-space:nowrap;border:1px solid transparent;cursor:pointer;}
.btn-p{background:var(--red);color:#fff;box-shadow:0 2px 10px -3px rgba(158,43,37,.55);}
.btn-p:hover{background:var(--red-deep);transform:translateY(-1px);}
.btn-g{background:transparent;color:var(--ink2);border-color:var(--line);}
.btn-g:hover{border-color:#cbb98d;background:#fffdf5;}
.btn-line{background:#fffdf5;color:var(--red);border-color:#e2c9a0;}

/* ---------- 登录 / 会员 ---------- */
.auth{display:flex;align-items:center;gap:8px;position:relative;}
.auth .btn{height:36px;padding:0 15px;font-size:13.5px;border-radius:18px;}
.avbtn{display:flex;align-items:center;gap:8px;height:38px;padding:0 12px 0 4px;border:1px solid var(--line);background:var(--card);border-radius:19px;cursor:pointer;font-family:inherit;font-size:14px;color:var(--ink);max-width:190px;}
.avbtn:hover{border-color:#cbb98d;}
.av,.aumhd .av{width:30px;height:30px;border-radius:50%;overflow:hidden;background:#efe6d1;display:flex;align-items:center;justify-content:center;flex:0 0 auto;}
.av img,.aumhd .av img{width:100%;height:100%;object-fit:cover;}
.av .avtxt{font-size:14px;color:var(--red);font-family:"LXGW WenKai","KaiTi",serif;}
.avbtn .nm{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.avbtn .car{width:0;height:0;border-left:4px solid transparent;border-right:4px solid transparent;border-top:5px solid var(--muted);margin-left:2px;flex:0 0 auto;}
.aum{position:absolute;right:0;top:calc(100% + 10px);width:252px;background:var(--card);border:1px solid var(--line);border-radius:10px;box-shadow:0 18px 40px -20px rgba(47,43,38,.45);padding:8px;opacity:0;visibility:hidden;transform:translateY(-6px);transition:.16s;z-index:60;}
.auth.open .aum{opacity:1;visibility:visible;transform:none;}
.aumhd{display:flex;align-items:center;gap:9px;padding:8px 8px 10px;border-bottom:1px solid var(--line2);margin-bottom:6px;}
.aumhd .av{width:34px;height:34px;}
.aumhd b{font-size:14px;font-weight:500;display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:140px;}
.aumhd span{font-size:11.5px;color:var(--muted);display:block;}
.aumv{font-size:12px;padding:7px 10px;border-radius:6px;margin:2px 0 6px;line-height:1.55;}
.aumv.v1{background:#eef3ea;color:#2f5c42;border:1px solid #dbe6d6;}
.aumv.v0{background:#fdf4ef;color:#8a5a2b;border:1px solid #f0e0cd;}
.aum a{display:block;font-size:13.5px;color:var(--ink2);padding:9px 10px;border-radius:6px;}
.aum a:hover{background:#f7f1e3;color:var(--red);}
html.nomove{overflow:hidden;}

/* 弹出登录框 */
.pmask{position:fixed;inset:0;z-index:200;background:rgba(38,34,29,.44);display:none;align-items:center;justify-content:center;padding:20px;}
.pmask.on{display:flex;}
.pbox{width:428px;max-width:100%;background:var(--card);border:1px solid var(--line);border-radius:16px;box-shadow:0 40px 80px -40px rgba(47,43,38,.55);overflow:hidden;}
.pbox.wide{width:920px;max-width:100%;}
.pbox.wide .pbody{max-height:calc(100vh - 120px);overflow:auto;}
.pbar{display:flex;align-items:center;height:46px;padding:0 12px 0 18px;border-bottom:1px solid var(--line2);background:#fdfaf1;}
.pbar b{font-size:15px;font-weight:500;font-family:"LXGW WenKai","KaiTi",serif;letter-spacing:1px;}
.pbar .mx{margin-left:auto;width:30px;height:30px;border:0;background:transparent;color:var(--muted);font-size:14px;cursor:pointer;border-radius:50%;}
.pbar .mx:hover{background:#f2ebda;color:var(--ink);}
.pbody{padding:24px 26px 22px;background:var(--card);}
.pbody.nopad{padding:0;}
.pfrm{height:calc(100vh - 170px);min-height:520px;background:#fff;}
.pfrm iframe{width:100%;height:100%;border:0;display:block;}
.pfoot{font-size:11.5px;color:var(--muted);text-align:center;padding:9px 12px;border-top:1px solid var(--line2);background:#fdfaf1;}
@media(max-height:780px){.pfrm{height:480px;}}
.pbox{max-height:calc(100vh - 40px);}

/* 登录方式切换 */
.ptabs{display:flex;gap:4px;margin:-24px -26px 0;padding:0 20px;border-bottom:1px solid var(--line2);}
.ptabs .ontab{flex:1;height:48px;border:0;background:none;font-family:inherit;font-size:14.5px;color:var(--muted);cursor:pointer;position:relative;transition:.16s;}
.ptabs .ontab:hover{color:var(--ink2);}
.ptabs .ontab.on{color:var(--red);}
.ptabs .ontab.on::after{content:"";position:absolute;left:50%;transform:translateX(-50%);bottom:-1px;width:64px;height:2px;background:var(--red);border-radius:2px;}
.ppane{padding-top:20px;}

/* 微信扫码 */
.pwx{text-align:center;padding:2px 0 2px;}
.pqr{position:relative;width:200px;height:200px;margin:0 auto;border:1px solid var(--line);border-radius:12px;background:#fff;overflow:hidden;box-shadow:0 6px 18px -12px rgba(47,43,38,.28);}
.pqrbox{width:200px;height:200px;display:flex;align-items:center;justify-content:center;}
.pqrbox canvas{width:200px;height:200px;display:block;}
.pqrmask{position:absolute;inset:0;background:rgba(255,255,255,.95);display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--muted);line-height:1.8;text-align:center;padding:0 16px;}
.pqrmask.click{cursor:pointer;color:var(--red);}
.pqtip{font-size:13px;color:var(--ink2);margin-top:16px;line-height:1.7;min-height:24px;}
.preload{background:none;border:0;color:var(--red);font-size:13px;font-family:inherit;cursor:pointer;text-decoration:underline;padding:2px 4px;}

/* 登录表单 */
.pauth .phint{font-size:13px;color:var(--ink2);line-height:1.75;margin-bottom:16px;}
.pfld{display:flex;align-items:center;border:1px solid var(--line);background:#fff;border-radius:8px;height:46px;margin-bottom:12px;overflow:hidden;transition:.16s;}
.pfld:focus-within{border-color:#d9b96a;box-shadow:0 0 0 3px rgba(217,185,106,.16);}
.pfld .pre{font-size:13.5px;color:var(--muted);padding:0 10px 0 14px;border-right:1px solid var(--line2);height:100%;display:flex;align-items:center;flex:0 0 auto;}
.pfld input{flex:1;min-width:0;height:100%;border:0;outline:none;background:transparent;font-size:15px;padding:0 14px;font-family:inherit;color:var(--ink);letter-spacing:.6px;}
.pfld input::placeholder{color:#b3ab98;letter-spacing:0;}
.pfld .psend{flex:0 0 auto;height:32px;margin:0 7px 0 0;padding:0 12px;border:1px solid #e2c9a0;background:#fffdf5;color:var(--red);border-radius:6px;font-size:12.5px;cursor:pointer;font-family:inherit;white-space:nowrap;}
.pfld .psend:hover{background:#fdf2ef;}
.pfld .psend:disabled{color:var(--muted);border-color:var(--line);background:#faf7ef;cursor:default;}
.psub{width:100%;margin-top:6px;height:46px;border-radius:8px;}
.psub:disabled{opacity:.65;cursor:default;}
.perr{min-height:18px;font-size:12.5px;color:#b4382f;margin-top:10px;line-height:1.6;}
.perr.ok{color:#2f5c42;}
.palt{font-size:11.5px;color:var(--muted);margin-top:6px;line-height:1.8;}
.palt a{color:var(--red);}

/* 账号与安全 */
.psec{padding:4px 2px;}
.psec .srow{display:flex;align-items:center;gap:14px;padding:14px 0;border-bottom:1px solid var(--line);}
.psec .sl{font-size:14px;color:var(--ink2);flex:0 0 72px;}
.psec .sv{font-size:14px;color:var(--ink);flex:1;min-width:0;}
.psec .sv em{font-style:normal;font-size:12px;margin-left:6px;padding:2px 8px;border-radius:4px;}
.psec .tag-ok{color:#2f5c42;background:#eef3ea;}
.psec .tag-no{color:#b4382f;background:#fbeae6;}
.psec .sbtn{flex:0 0 auto;height:32px;padding:0 14px;border:1px solid #e2c9a0;background:#fffdf5;color:var(--red);border-radius:6px;font-size:12.5px;cursor:pointer;font-family:inherit;white-space:nowrap;}
.psec .sbtn:hover{background:#fdf2ef;}
.psec .snote{font-size:12.5px;color:var(--muted);line-height:1.8;margin:14px 0 4px;}
.psec #sform{margin-top:8px;}

/* 会员卡片 */
.vipsec{padding:6px 0 2px;}
.vipbox{display:flex;align-items:center;gap:26px;background:linear-gradient(100deg,#fdf8ec,#fffdf5 55%,#f6f1e2);border:1px solid var(--line);border-radius:12px;padding:20px 26px;box-shadow:var(--shadow);}
.vipbox.isvip{background:linear-gradient(100deg,#eef3ea,#f8fbf5 60%,#fbf6ea);border-color:#dbe6d6;}
.vipt{flex:1;min-width:0;}
.vipt h3{font-size:19px;font-weight:400;letter-spacing:.8px;font-family:"LXGW WenKai","KaiTi",serif;display:flex;align-items:center;gap:10px;}
.vipt p{font-size:13.5px;color:var(--ink2);margin-top:7px;line-height:1.75;}
.vbadge{display:inline-block;font-size:11.5px;letter-spacing:1px;color:#fff;background:linear-gradient(100deg,#c79b4e,#e0bd74);border-radius:4px;padding:3px 9px;font-family:inherit;flex:0 0 auto;}
.vipa{display:flex;gap:12px;flex:0 0 auto;}
.vipbox.strip{padding:13px 22px;align-items:center;background:linear-gradient(100deg,#eef3ea,#f8fbf5 60%,#fbf6ea);border-color:#dbe6d6;}
.vipbox.strip .vipt{display:flex;align-items:center;gap:16px;flex-wrap:wrap;}
.vipbox.strip .vipt h3{font-size:15px;letter-spacing:.3px;}
.vipbox.strip .vipt p{margin-top:0;font-size:12.5px;color:#5c7a66;position:relative;padding-left:16px;}
.vipbox.strip .vipt p::before{content:"";position:absolute;left:0;top:50%;width:5px;height:5px;border-radius:50%;background:#8fb39a;transform:translateY(-50%);}
@media(max-width:980px){.vipbox{flex-direction:column;align-items:flex-start;gap:16px;}.vipbox.strip{padding:13px 16px;}}
/* __PC_VIPBAR_V2__ 2026-10-24 会员条配色对齐手机端（浅米金，替代原深棕块） */
.vipbox.vipbar{flex-direction:column;align-items:stretch;gap:12px;padding:18px 22px;background:linear-gradient(135deg,#fff8e9 0%,#fdeecd 55%,#f9e5bd 100%);border:1px solid #eddbb2;border-radius:14px;box-shadow:0 6px 18px -10px rgba(176,130,54,.55);}
.vipbox.vipbar.novip{background:linear-gradient(135deg,#fdf2e2 0%,#fae6c8 100%);border-color:#eccf9e;}
.vipbar-head{display:flex;align-items:center;gap:12px;}
.vipbar-badge{flex:0 0 auto;background:linear-gradient(180deg,#d9a441,#b8860b);border:1px solid rgba(255,255,255,.35);color:#fffdf6;font-size:12.5px;padding:4px 13px;border-radius:15px;letter-spacing:.5px;white-space:nowrap;box-shadow:0 2px 6px -3px rgba(150,105,20,.7);}
.vipbox.vipbar.novip .vipbar-badge{background:linear-gradient(180deg,#e2a24a,#c8791f);}
.vipbar-state{flex:1;min-width:0;color:#5a4632;font-size:15px;font-weight:700;line-height:1.4;}
.vipbar-btn{flex:0 0 auto;height:36px;padding:0 18px;font-size:14px;border:0;background:linear-gradient(180deg,#e8b046,#cf8f23);color:#fffdf6;font-weight:700;border-radius:9px;cursor:pointer;letter-spacing:1px;box-shadow:0 5px 12px -7px rgba(170,115,25,.9);}
.vipbar-btn:hover{filter:brightness(1.04);transform:translateY(-1px);}
.vipbar-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;background:rgba(255,255,255,.62);border:1px solid rgba(214,186,132,.45);border-radius:10px;padding:13px 6px;}
.vipbar-cell{text-align:center;min-width:0;}
.vipbar-cell b{display:block;color:#a9761a;font-size:23px;font-weight:800;line-height:1.2;letter-spacing:.5px;}
.vipbar-cell span{display:block;color:#8a7663;font-size:12px;margin-top:4px;}
.vipbar-note{color:#8a7663;font-size:12.5px;line-height:1.5;}
@media(max-width:760px){
  .vipbox.vipbar{padding:14px 15px;}
  .vipbar-head{flex-wrap:wrap;}
  .vipbar-state{flex:1 1 100%;order:3;font-size:14px;}
  .vipbar-btn{order:2;margin-left:auto;}
  .vipbar-cell b{font-size:18px;}
  .vipbar-cell span{font-size:11px;}
}

/* __PC_GRADE_NAV_V1__ 2026-10-24 与手机首页底部「按年级看课程」一致：一上/一下 … 六上/六下 */

/* ---------- hero ---------- */
.hero{padding:58px 0 40px;position:relative;overflow:hidden;}
.hero::before{content:"";position:absolute;inset:0;background:
  radial-gradient(720px 380px at 78% 32%,rgba(158,43,37,.055),transparent 70%),
  radial-gradient(560px 320px at 12% 8%,rgba(61,107,82,.05),transparent 70%);pointer-events:none;}
.hero .wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;position:relative;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--green);background:#eef3ea;border:1px solid #dbe6d6;border-radius:14px;padding:5px 13px;margin-bottom:20px;letter-spacing:.6px;}
.hero h1{font-size:44px;line-height:1.32;letter-spacing:2px;font-weight:400;color:var(--ink);}
.hero h1 em{font-style:normal;color:var(--red);position:relative;}
.hero h1 em::after{content:"";position:absolute;left:-2px;right:-2px;bottom:4px;height:9px;background:rgba(158,43,37,.12);z-index:-1;}
.hero p.lead{margin-top:18px;font-size:16px;color:var(--ink2);max-width:520px;line-height:1.85;}
.hero .cta{display:flex;gap:14px;margin-top:30px;}
.btn-lg{height:48px;padding:0 28px;font-size:15px;border-radius:24px;}
.stats{display:flex;gap:38px;margin-top:38px;padding-top:26px;border-top:1px solid var(--line2);}
.stats b{display:block;font-size:26px;font-weight:600;color:var(--red);letter-spacing:.5px;font-family:"LXGW WenKai","KaiTi",serif;}
.stats span{font-size:13px;color:var(--muted);}

.art{position:relative;height:420px;isolation:isolate;}
.art .sheet{position:absolute;background:#fffdf9;border:1px solid var(--line);border-radius:5px;overflow:hidden;}
.art .behind{right:2px;top:66px;width:242px;height:296px;transform:rotate(7.5deg);box-shadow:0 14px 34px -18px rgba(47,43,38,.4);opacity:.7;z-index:1;}
.art .behind img{width:100%;height:100%;object-fit:cover;filter:grayscale(.45) sepia(.12) contrast(.92);}
.art .front{left:8px;top:0;width:322px;height:372px;transform:rotate(-2.6deg);z-index:2;box-shadow:0 26px 50px -26px rgba(47,43,38,.42),0 2px 4px rgba(47,43,38,.06);
  background:#fffdf9;
  display:flex;align-items:center;justify-content:center;}
.art .front img{width:90%;height:auto;mix-blend-mode:multiply;}
.art .tag{position:absolute;left:-14px;bottom:32px;z-index:3;background:var(--red);color:#fff;font-size:12.5px;letter-spacing:3px;padding:8px 16px 8px 18px;border-radius:3px;box-shadow:0 8px 18px -8px rgba(158,43,37,.85);}


/* ---------- section ---------- */
section{padding:64px 0;}
.shead{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:30px;gap:20px;}
.shead h2{font-size:28px;font-weight:400;letter-spacing:1.5px;}
.shead h2 small{display:block;font-size:13px;color:var(--muted);letter-spacing:.4px;margin-top:6px;font-family:"PingFang SC","Microsoft YaHei",sans-serif;}
.shead .more{font-size:14px;color:var(--red);}
.shead .more:hover{text-decoration:underline;}

/* 三卡 */
.trio{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.tcard{background:linear-gradient(180deg,var(--soft,#f6efe0) 0,var(--card) 96px),var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px 22px;position:relative;transition:.2s;overflow:hidden;}
.tcard::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--accent,var(--red));opacity:.85;}
.tcard:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#dccfae;}
.tcard .thead{display:flex;align-items:center;gap:14px;}
.tcard .ico{width:62px;height:62px;border-radius:8px;border:1px solid #e6ddc4;flex:none;background:#fdfbf4 url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 100'%3E%3Crect x='1.5' y='1.5' width='97' height='97' fill='none' stroke='%23e8b3ab' stroke-width='1.6'/%3E%3Cpath d='M50 2V98M2 50H98M2 2L98 98M98 2L2 98' fill='none' stroke='%23e8b3ab' stroke-width='0.9' stroke-dasharray='5 4'/%3E%3C/svg%3E") center/100% 100% no-repeat;box-shadow:0 1px 4px rgba(96,74,30,.10);display:flex;align-items:center;justify-content:center;transition:border-color .2s;}
.tcard:nth-child(2) .ico{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 100'%3E%3Crect x='1.5' y='1.5' width='97' height='97' fill='none' stroke='%23aec3dd' stroke-width='1.6'/%3E%3Cpath d='M50 2V98M2 50H98M2 2L98 98M98 2L2 98' fill='none' stroke='%23aec3dd' stroke-width='0.9' stroke-dasharray='5 4'/%3E%3C/svg%3E");}
.tcard:nth-child(3) .ico{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 100'%3E%3Crect x='1.5' y='1.5' width='97' height='97' fill='none' stroke='%23c8b6de' stroke-width='1.6'/%3E%3Cpath d='M50 2V98M2 50H98M2 2L98 98M98 2L2 98' fill='none' stroke='%23c8b6de' stroke-width='0.9' stroke-dasharray='5 4'/%3E%3C/svg%3E");}
.tcard:hover .ico{border-color:#d9c9a3;}
.tcard .ico img{width:44px;height:44px;object-fit:contain;display:block;transition:transform .25s;}
.tcard:hover .ico img{transform:scale(1.06);}
.tcard .tt{min-width:0;}
.tcard h3{font-size:19.5px;font-weight:500;letter-spacing:1.5px;line-height:1.35;font-family:"LXGW WenKai","KaiTi",serif;}
.tcard .sub{font-size:12.5px;color:var(--muted);margin-top:5px;line-height:1.6;}
.tcard p{font-size:14px;color:var(--ink2);margin-top:14px;line-height:1.85;min-height:52px;}
.tcard .lnk{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:14px;color:var(--accent,var(--red));}
.tcard .lnk:hover{gap:10px;}
@media (max-width:560px){
  .tcard{padding:16px 14px 14px;}
  .tcard .thead{flex-direction:column;align-items:flex-start;gap:9px;}
  .tcard .ico{width:52px;height:52px;}
  .tcard .ico img{width:38px;height:38px;}
  .tcard h3{font-size:17px;letter-spacing:1px;}
  .tcard p{font-size:13px;margin-top:10px;min-height:0;}
  .tcard .lnk{margin-top:10px;}
}

/* 12 册 */
.books{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
.bcard{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px 18px 16px;position:relative;transition:.18s;overflow:hidden;display:flex;flex-direction:column;}
.bcard .bmain{flex:1;min-width:0;padding-right:86px;}
.bcard .cov{position:absolute;right:14px;top:46px;width:62px;border-radius:2px;background:#fff;border:1px solid rgba(96,74,30,.14);box-shadow:0 2px 8px rgba(62,48,18,.20);}
.bcard:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:#dccfae;}
.bcard .bar{position:absolute;left:0;top:0;right:0;height:3px;background:var(--accent);opacity:.9;}
.bcard .tag{align-self:flex-start;font-size:12px;color:#fff;background:var(--accent);border-radius:3px;padding:1px 7px;letter-spacing:.5px;}
.bcard h4{font-size:17px;font-weight:500;margin-top:12px;font-family:"LXGW WenKai","KaiTi",serif;letter-spacing:1px;}
.bcard .meta{font-size:12.5px;color:var(--ink2);margin-top:7px;white-space:nowrap;}
.bcard .meta2{font-size:11.5px;color:#a49c86;margin-top:2px;white-space:nowrap;}
.bcard .bfoot{display:flex;align-items:center;margin-top:auto;padding-top:14px;}
.bcard .go{font-size:13px;color:var(--accent);display:inline-block;font-weight:500;}
.bcard:hover .go{text-decoration:underline;}
/* __PC_BOOKCOURSE_V1__ 12 册卡片补「课程 ›」入口：直达该册课程列表（可逐课点开） */
.bcard .go2{font-size:12px;color:var(--accent);opacity:.72;margin-left:10px;display:inline-block;font-weight:500;border-bottom:1px dashed currentColor;cursor:pointer;}
.bcard .go2:hover{opacity:1;}

/* 今日字 */
.zis{display:grid;grid-template-columns:repeat(8,1fr);gap:14px;}
.zcard{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:14px 8px 12px;text-align:center;transition:.18s;}
.zcard:hover{border-color:#d9b96a;transform:translateY(-2px);box-shadow:var(--shadow);}
.zcard .z{font-family:"LXGW WenKai","KaiTi",serif;font-size:38px;line-height:1.1;color:var(--ink);}
.zcard .py{font-size:12px;color:var(--red);margin-top:2px;letter-spacing:.3px;}
.zcard .lb{font-size:11px;color:var(--muted);margin-top:8px;border-top:1px dashed var(--line2);padding-top:7px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}

/* PDF */
.pdfs{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;}
.pcard{display:flex;align-items:center;gap:14px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;transition:.18s;min-width:0;}
.pcard:hover{border-color:#d9b96a;box-shadow:var(--shadow);}
.pcard .pi{width:34px;height:42px;background:#fdf3f1;border:1px solid #efd7d2;border-radius:3px;display:flex;align-items:center;justify-content:center;font-size:11px;color:var(--red);font-weight:600;flex:0 0 auto;letter-spacing:0;}
.pcard>span:last-child{display:block;min-width:0;}
/* ZT_TITLE_V1 2026-10-23 册名不再截断：之前 nowrap+ellipsis 导致「一年级上册写字...」/ 手机上只剩「一」 */
.pcard .pn{display:block;font-size:14px;line-height:1.4;white-space:normal;overflow:visible;text-overflow:clip;}
.pcard .ps{display:block;font-size:11.5px;color:var(--muted);margin-top:4px;white-space:normal;overflow:visible;text-overflow:clip;line-height:1.55;}
.pcard .popen{display:flex;align-items:center;gap:14px;flex:1 1 auto;min-width:0;text-decoration:none;color:inherit;}
.pcard .ptxt{display:block;min-width:0;}
.pcard .popen:hover .pn{color:#8a6a2e;}
.pcard .pdl{flex:0 0 auto;font-size:12.5px;line-height:1;padding:9px 16px;border:1px solid #e2d0a4;color:#8a6a2e;border-radius:15px;background:#fffdf5;transition:.16s;white-space:nowrap;text-decoration:none;}
.pcard .pdl:hover{background:#bb7a24;color:#fff;border-color:#bb7a24;}

/* 特性 */
.feats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:40px 0;}
.feat b{display:block;font-size:15px;font-weight:500;margin-bottom:6px;}
.feat b i{font-style:normal;color:var(--red);margin-right:8px;font-size:13px;}
.feat p{font-size:13.5px;color:var(--muted);line-height:1.75;}

/* footer */
.ft{background:#f5eedd;border-top:1px solid var(--line);padding:46px 0 26px;margin-top:12px;}
.ftgrid{display:grid;grid-template-columns:1.3fr repeat(4,1fr);gap:30px;}
.ftgrid h5{font-size:13px;color:var(--ink);letter-spacing:1px;margin-bottom:14px;font-weight:600;}
.ftgrid a{display:block;font-size:13px;color:var(--muted);line-height:2.1;}
.ftgrid a:hover{color:var(--red);}
.ftbrand p{font-size:13px;color:var(--muted);margin-top:12px;line-height:1.9;max-width:300px;}
.ftbot{border-top:1px solid #e6dcc4;margin-top:34px;padding-top:20px;display:flex;flex-wrap:wrap;gap:10px 22px;font-size:12.5px;color:#9d9682;}
.ftbot a:hover{color:var(--red);}


/* ---------- 手机版预览 ---------- */
.ph-wrap{max-width:1180px;margin:0 auto;padding:54px 28px 60px;display:grid;grid-template-columns:1fr 420px;gap:70px;align-items:center;}
.ph-left h1{font-size:34px;font-weight:400;letter-spacing:1.5px;line-height:1.4;}
.ph-left p{margin-top:16px;font-size:15px;color:var(--ink2);line-height:1.9;max-width:460px;}
.ph-left ul{list-style:none;margin-top:26px;}
.ph-left li{font-size:14px;color:var(--ink2);padding-left:26px;position:relative;line-height:2.1;}
.ph-left li::before{content:"";position:absolute;left:2px;top:13px;width:7px;height:7px;border-radius:50%;background:var(--red);opacity:.65;}
.ph-left .phact{margin-top:34px;display:flex;gap:12px;}
.ph-frame{position:relative;width:392px;height:min(790px,calc(100vh - 170px));min-height:600px;background:#25211c;border-radius:44px;padding:11px;box-shadow:0 44px 90px -46px rgba(47,43,38,.6),0 2px 6px rgba(47,43,38,.16);margin:0 auto;}
.ph-frame iframe{width:100%;height:100%;border:0;border-radius:34px;background:#fff;display:block;}
.ph-cap{text-align:center;font-size:12.5px;color:var(--muted);margin-top:18px;letter-spacing:.5px;}
.ph-tag{font-size:12.5px;color:var(--green);background:#eef3ea;border:1px solid #dbe6d6;border-radius:12px;padding:3px 10px;}
body.full .ph-wrap{grid-template-columns:1fr;gap:0;max-width:none;padding:24px;}
body.full .ph-left{display:none;}
body.full .ph-frame{width:min(1100px,96vw);height:calc(100vh - 130px);border-radius:14px;padding:6px;}
body.full .ph-frame iframe{border-radius:9px;}
@media (max-width:1080px){
  .ph-wrap{grid-template-columns:1fr;gap:34px;padding-top:34px;}
  .ph-frame{width:340px;height:680px;}
}

/* 搜索下拉 */
.sdrop{position:absolute;top:46px;left:0;right:0;background:#fffdf8;border:1px solid var(--line);border-radius:10px;box-shadow:0 12px 34px -14px rgba(47,43,38,.35);overflow:hidden;display:none;max-height:340px;overflow-y:auto;z-index:60;}
.sdrop.on{display:block;}
.sdrop a{display:flex;align-items:center;gap:12px;padding:9px 14px;border-bottom:1px solid var(--line2);}
.sdrop a:last-child{border-bottom:0;}
.sdrop a:hover,.sdrop a.act{background:#f8f1e0;}
.sdrop .zc{font-family:"LXGW WenKai","KaiTi",serif;font-size:20px;width:26px;text-align:center;color:var(--ink);}
.sdrop .zp{font-size:12.5px;color:var(--red);}
.sdrop .zb{margin-left:auto;font-size:11.5px;color:var(--muted);}

/* ---------- 字库页 ---------- */
.pagehd{padding:40px 0 26px;border-bottom:1px solid var(--line);}
.pagehd h1{font-size:32px;font-weight:400;letter-spacing:1.5px;}
.pagehd p{color:var(--muted);font-size:14px;margin-top:8px;}
.zbar{display:flex;gap:10px;flex-wrap:wrap;padding:22px 0;align-items:center;position:sticky;top:74px;background:rgba(251,246,234,.95);backdrop-filter:blur(8px);z-index:40;border-bottom:1px solid var(--line2);}
.zbar input{height:40px;border:1px solid var(--line);border-radius:20px;background:var(--card);padding:0 16px;font-size:14px;width:240px;outline:none;font-family:inherit;}
.zbar input:focus{border-color:#d9b96a;}
.zbar select{height:40px;border:1px solid var(--line);border-radius:20px;background:var(--card);padding:0 14px;font-size:14px;color:var(--ink2);outline:none;font-family:inherit;}
.zbar .cnt{margin-left:auto;font-size:13px;color:var(--muted);}
.alpha{display:flex;flex-wrap:wrap;gap:6px;padding:14px 0;}
.alpha a{font-size:12.5px;color:var(--ink2);border:1px solid var(--line);background:var(--card);border-radius:4px;padding:3px 9px;text-transform:uppercase;}
.alpha a:hover{background:var(--red);color:#fff;border-color:var(--red);}
.zgroup{margin-top:6px;}
.zgroup h3{font-size:13px;color:var(--muted);letter-spacing:2px;padding:14px 0 6px;border-bottom:1px dashed var(--line);text-transform:uppercase;}
.zgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(64px,1fr));gap:8px;padding:12px 0 4px;}
.zcell{background:var(--card);border:1px solid var(--line);border-radius:6px;padding:12px 2px 8px;text-align:center;transition:.14s;}
.zcell:hover{border-color:#d9b96a;background:#fff;transform:translateY(-2px);}
.zcell .c{display:block;font-family:"LXGW WenKai","KaiTi",serif;font-size:24px;line-height:1.05;color:var(--ink);}
.zcell .p{display:block;font-size:10.5px;color:var(--muted);margin-top:5px;letter-spacing:0;}

@media (max-width:1240px){
  .hd .wrap{gap:20px;}
  .searchbox{width:200px;}
  .vipt h3{font-size:17.5px;}
}
@media (max-width:1080px){
  .hero .wrap{grid-template-columns:1fr;gap:36px;}
  .art{height:340px;max-width:420px;}
  .books,.pdfs{grid-template-columns:repeat(3,1fr);}
  .zis{grid-template-columns:repeat(4,1fr);}
  .feats{grid-template-columns:repeat(2,1fr);}
  .ftgrid{grid-template-columns:1fr 1fr;gap:26px;}
  .nav{display:none;}
  .hd-aux{display:none;}
  .searchbox{width:180px;}
}
@media (max-width:720px){
  .wrap{padding:0 18px;}
  .hero h1{font-size:32px;}
  .trio,.books{grid-template-columns:1fr 1fr;}
  /* 练字纸卡片：手机改单列，否则标题被压成 1 个字（只显示「一」） */
  .pdfs{grid-template-columns:1fr;gap:10px;}
  .zis{grid-template-columns:repeat(4,1fr);}
  section{padding:44px 0;}
  .searchbox{width:150px;}
}
/* ZT_MOBILE_V1 手机端练字纸卡片：标题完整显示，不截断 */
@media (max-width:560px){
  .bcard .cov{display:none;}
  .bcard .bmain{padding-right:0;}
  .pdfs{grid-template-columns:1fr;gap:10px;}
  .pcard{padding:12px 13px;gap:11px;}
  .pcard .pi{width:30px;height:38px;font-size:10px;}
  .pcard .pn{white-space:normal;overflow:visible;text-overflow:clip;font-size:14.5px;line-height:1.45;}
  .pcard .ps{white-space:normal;overflow:visible;text-overflow:clip;font-size:11.5px;line-height:1.6;}
  .pcard .popen{gap:11px;}
  .pcard .pdl{padding:8px 13px;font-size:12px;}
}

/* HWNTRY_V1 2026-10-23 顶部交作业入口 */
.nav a.nav-hw{color:#fff;background:var(--red);padding:6px 14px;border-radius:15px;font-weight:700;font-size:14px;}
.nav a.nav-hw::after{display:none;}
.nav a.nav-hw:hover{color:#fff;background:var(--red-deep);}

.nav a.nav-ck{color:#8a5a25;background:#fdf3e0;border:1px solid #f0dcbb;padding:5px 12px;border-radius:15px;font-weight:700;font-size:13.5px;}
.nav a.nav-ck::after{display:none;}
.nav a.nav-ck:hover{background:#f9e8c8;color:#6b4520;}
.nav a.nav-ck.done{color:#6f7d61;background:#f2f5ee;border-color:#dfe6d6;font-weight:600;}

/* __PC_GRADE_PICK_V1__ 2026-10-23 PC 端选年级引导 */
.pcg-card{text-align:center;}
.pcg-card h3{font-size:19px;margin-bottom:8px;letter-spacing:.5px;}
.pcg-card p{font-size:13.5px;color:var(--muted);line-height:1.7;margin-bottom:18px;}
.pcg-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:18px;}
.pcg-btn{height:52px;border:1.5px solid var(--line);background:#fbf8f1;border-radius:10px;font-size:15px;font-weight:700;color:var(--ink2);cursor:pointer;font-family:inherit;transition:.16s;}
.pcg-btn:hover{border-color:#d9b96a;background:#fdf7e8;}
.pcg-btn.sel{background:linear-gradient(180deg,#e8b046,#cf8f23);border-color:#c99a3e;color:#fffdf6;box-shadow:0 6px 14px -8px rgba(170,115,25,.9);}
.pcg-ok{width:100%;height:48px;}
.pcg-ok:disabled{background:#e8e1cf;color:#a99e82;border-color:#ddd4bd;box-shadow:none;cursor:not-allowed;}
.pcg-skip{width:100%;height:40px;margin-top:8px;border:0;background:transparent;color:var(--muted);font-size:13.5px;cursor:pointer;font-family:inherit;}
.pcg-tip{font-size:12px;color:#b0a793;margin-top:10px;}
/* __SAFARI_FIX_V1__ 2026-11-03 兼容 Safari：文本不撑破、字体缩放、图片不溢出 */
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
img{max-width:100%}
.nav>*, .nav a, .hero>* , .ptck-h>*, .ptck-b>*, .ptck-num>*, .ptitem, .card>*, .row>*{min-width:0}
.hero h1,.hero p,.card h3,.ptitem b{overflow-wrap:anywhere;word-break:break-word}