/* ============================================================
   三度密语加密 · 前端样式 v1.2.0
   白色默认 · 3D 立体玻璃（Apple 风）· 阿里普惠体
   ============================================================ */

/* ---------- 阿里普惠体（CDN，离线自动回退系统字体） ---------- */
@font-face{font-family:'Alibaba PuHuiTi';font-style:normal;font-weight:400;font-display:swap;
  src:url('https://puhuiti.oss-cn-hangzhou.aliyuncs.com/AlibabaPuHuiTi-3/55-Regular/AlibabaPuHuiTi-3-55-Regular.woff2') format('woff2');}
@font-face{font-family:'Alibaba PuHuiTi';font-style:normal;font-weight:500;font-display:swap;
  src:url('https://puhuiti.oss-cn-hangzhou.aliyuncs.com/AlibabaPuHuiTi-3/65-Medium/AlibabaPuHuiTi-3-65-Medium.woff2') format('woff2');}
@font-face{font-family:'Alibaba PuHuiTi';font-style:normal;font-weight:700;font-display:swap;
  src:url('https://puhuiti.oss-cn-hangzhou.aliyuncs.com/AlibabaPuHuiTi-3/85-Bold/AlibabaPuHuiTi-3-85-Bold.woff2') format('woff2');}
@font-face{font-family:'Alibaba PuHuiTi';font-style:normal;font-weight:900;font-display:swap;
  src:url('https://puhuiti.oss-cn-hangzhou.aliyuncs.com/AlibabaPuHuiTi-3/105-Heavy/AlibabaPuHuiTi-3-105-Heavy.woff2') format('woff2');}

/* ---------- 设计变量 ---------- */
:root{
  --font:'Alibaba PuHuiTi',-apple-system,BlinkMacSystemFont,'PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
  --accent:#2f6bff;
  --accent-2:#1f54e0;
  --ok:#28a96b;
  --err:#e0566b;
  --warn:#e8993b;
  --radius:18px;
}
html[data-theme="light"],:root{
  --bg:#e9edf4;
  --bg-2:#f4f6fb;
  --txt:#1a2233;
  --txt-dim:#5d677c;
  --txt-faint:#8b93a5;
  --glass:rgba(255,255,255,.62);
  --glass-strong:rgba(255,255,255,.82);
  --glass-brd:rgba(255,255,255,.75);
  --glass-sh:0 10px 34px rgba(33,43,80,.12),inset 0 1px 0 rgba(255,255,255,.95);
  --card:#ffffff;
  --field:#f3f5fa;
  --field-brd:#e2e6ef;
  --orb-1:rgba(120,160,255,.40);
  --orb-2:rgba(140,210,255,.34);
  --orb-3:rgba(180,190,255,.30);
  --grid:rgba(40,60,120,.05);
  --seg-bg:rgba(120,140,190,.14);
}
html[data-theme="dark"]{
  --bg:#0b0f1e;
  --bg-2:#0e1426;
  --txt:#e8ecf6;
  --txt-dim:#a6aec4;
  --txt-faint:#767f97;
  --glass:rgba(26,33,56,.55);
  --glass-strong:rgba(30,38,64,.72);
  --glass-brd:rgba(120,140,200,.18);
  --glass-sh:0 12px 38px rgba(0,0,0,.45),inset 0 1px 0 rgba(255,255,255,.06);
  --card:#141b31;
  --field:#161e38;
  --field-brd:#263055;
  --orb-1:rgba(70,110,230,.30);
  --orb-2:rgba(60,180,220,.20);
  --orb-3:rgba(120,90,220,.20);
  --grid:rgba(160,180,255,.05);
  --seg-bg:rgba(120,140,200,.16);
}

/* ---------- 基础重置：去点击蓝框/蓝高亮 ---------- */
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;}
*:focus,*:focus-visible,*:active{outline:none!important;box-shadow:none!important;}
html,body{margin:0;padding:0;}
body{
  font-family:var(--font);color:var(--txt);background:var(--bg);
  line-height:1.6;-webkit-font-smoothing:antialiased;
  overflow-x:hidden;min-height:100vh;
  transition:background .5s ease,color .4s ease;
}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit;}
input,textarea,select{font-family:inherit;}
img{max-width:100%;display:block;}
[hidden]{display:none!important;}
.ico{width:1.15em;height:1.15em;flex:none;vertical-align:-.16em;}

/* ---------- 背景动画（网格 + 柔光球体） ---------- */
.bg-grid{position:fixed;inset:0;z-index:-2;
  background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:46px 46px;
  -webkit-mask-image:-webkit-radial-gradient(ellipse at 50% 0%,#000 30%,transparent 75%);
  mask-image:radial-gradient(ellipse at 50% 0%,#000 30%,transparent 75%);
}
.bg-orbs{position:fixed;inset:0;z-index:-1;overflow:hidden;pointer-events:none;}
.orb{position:absolute;border-radius:50%;filter:blur(60px);animation:orbFloat 22s ease-in-out infinite;}
.orb-1{width:46vw;height:46vw;left:-12vw;top:-10vw;background:var(--orb-1);}
.orb-2{width:40vw;height:40vw;right:-10vw;top:18vh;background:var(--orb-2);animation-delay:-7s;}
.orb-3{width:38vw;height:38vw;left:24vw;bottom:-16vw;background:var(--orb-3);animation-delay:-14s;}
@keyframes orbFloat{0%,100%{transform:translate(0,0) scale(1);}33%{transform:translate(4vw,-3vh) scale(1.06);}66%{transform:translate(-3vw,3vh) scale(.96);}}

.container{width:min(1080px,92vw);margin:0 auto;}

/* ---------- 导航 ---------- */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;
  backdrop-filter:blur(18px) saturate(160%);-webkit-backdrop-filter:blur(18px) saturate(160%);
  background:var(--glass);border-bottom:1px solid var(--glass-brd);
  transition:background .4s;}
.nav-inner{width:min(1180px,94vw);margin:0 auto;height:62px;display:flex;align-items:center;gap:10px;}
.logo{display:flex;align-items:center;gap:9px;margin-right:auto;}
.logo-svg{width:34px;height:34px;filter:drop-shadow(0 4px 10px rgba(47,107,255,.3));animation:logoSpin 9s ease-in-out infinite;transform-origin:center;}
@keyframes logoSpin{0%,100%{transform:perspective(400px) rotateY(0);}50%{transform:perspective(400px) rotateY(24deg);}}
.logo-txt{font-weight:800;font-size:17px;letter-spacing:.5px;}
.theme-btn,.menu-btn{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:var(--seg-bg);color:var(--txt);transition:transform .2s,background .3s;}
.theme-btn:active,.menu-btn:active{transform:scale(.9);}
.menu-btn .ico{width:22px;height:22px;}
.menu-btn.is-open{background:var(--accent);color:#fff;}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-link,.nav-cta{display:flex;align-items:center;gap:7px;padding:8px 13px;border-radius:11px;
  font-size:14px;font-weight:500;color:var(--txt-dim);transition:background .25s,color .25s;white-space:nowrap;}
.nav-link:hover{background:var(--seg-bg);color:var(--txt);}
.nav-link.active{color:var(--accent);background:rgba(47,107,255,.1);}
.nav-cta{background:var(--accent);color:#fff;box-shadow:0 6px 16px rgba(47,107,255,.28);}
.nav-cta:active{transform:translateY(1px);}

/* ---------- 通用玻璃卡 ---------- */
.glass-card{
  background:var(--glass);backdrop-filter:blur(22px) saturate(170%);-webkit-backdrop-filter:blur(22px) saturate(170%);
  border:1px solid var(--glass-brd);border-radius:var(--radius);box-shadow:var(--glass-sh);
}

/* ---------- Hero ---------- */
.hero{padding:148px 0 90px;text-align:center;position:relative;}
.badge{display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:999px;
  background:var(--glass);border:1px solid var(--glass-brd);backdrop-filter:blur(12px);
  font-size:13px;color:var(--txt-dim);font-weight:500;
  animation:fadeUp .7s cubic-bezier(.2,.7,.2,1) both;}
.badge-dot{width:8px;height:8px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 4px rgba(40,169,107,.18);animation:pulse 2s infinite;}
@keyframes pulse{50%{box-shadow:0 0 0 7px rgba(40,169,107,.05);}}
.hero h1{font-size:clamp(34px,6vw,60px);font-weight:900;line-height:1.15;margin:22px 0 18px;letter-spacing:1px;
  animation:fadeUp .8s .08s cubic-bezier(.2,.7,.2,1) both;}
.grad-text{color:var(--accent);}
.typing{min-height:30px;font-size:clamp(15px,2.2vw,18px);color:var(--txt-dim);max-width:680px;margin:0 auto;display:inline;}
.typing-caret{color:var(--accent);font-weight:400;animation:blink 1s steps(1) infinite;}
@keyframes blink{50%{opacity:0;}}
.hero-actions{display:flex;gap:14px;justify-content:center;margin-top:32px;flex-wrap:wrap;
  animation:fadeUp .9s .16s cubic-bezier(.2,.7,.2,1) both;}
.scroll-hint{margin-top:54px;color:var(--txt-faint);font-size:13px;display:flex;flex-direction:column;align-items:center;gap:10px;
  animation:fadeUp 1s .3s both;}
.hint-line{width:2px;height:38px;background:linear-gradient(var(--accent),transparent);border-radius:2px;animation:drop 1.8s ease-in-out infinite;}
@keyframes drop{0%{transform:scaleY(0);transform-origin:top;}55%{transform:scaleY(1);transform-origin:top;}56%{transform-origin:bottom;}100%{transform:scaleY(0);transform-origin:bottom;}}

/* ---------- 按钮（统一尺寸，立体，纯色，无彩色渐变） ---------- */
.btn-primary,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:48px;padding:0 26px;border-radius:14px;font-size:15px;font-weight:600;
  transition:transform .18s,box-shadow .25s,background .25s;white-space:nowrap;
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 10px 22px rgba(47,107,255,.30),inset 0 1px 0 rgba(255,255,255,.25);}
.btn-primary:hover{background:var(--accent-2);}
.btn-primary:active{transform:translateY(2px);box-shadow:0 4px 10px rgba(47,107,255,.25),inset 0 1px 0 rgba(255,255,255,.2);}
.btn-ghost{background:var(--glass-strong);color:var(--txt);border:1px solid var(--glass-brd);box-shadow:0 6px 16px rgba(30,40,80,.08);}
.btn-ghost:active{transform:translateY(2px);}
.btn-block{width:100%;height:50px;font-size:16px;}
.btn-primary:disabled,.btn-ghost:disabled{opacity:.65;}

/* ---------- 工具面板 ---------- */
#tool{padding-bottom:40px;}
.tool-panel{padding:22px;scroll-margin-top:84px;}
.tool-tabs{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;padding:6px;
  background:var(--seg-bg);border-radius:15px;margin-bottom:20px;min-width:0;}
.tool-tab{display:flex;align-items:center;justify-content:center;gap:6px;height:44px;border-radius:11px;
  font-size:14px;font-weight:600;color:var(--txt-dim);transition:all .28s cubic-bezier(.2,.7,.2,1);
  white-space:nowrap;min-width:0;overflow:hidden;padding:0 6px;}
.tool-tab .ico{flex:0 0 auto;}
.tool-tab span{overflow:hidden;text-overflow:ellipsis;}
.tool-tab.active{background:var(--card);color:var(--accent);box-shadow:0 6px 16px rgba(30,40,80,.12),inset 0 1px 0 rgba(255,255,255,.8);}
.tool-pane{display:none;}
.tool-pane.active{display:block;animation:paneIn .4s cubic-bezier(.2,.7,.2,1);}
@keyframes paneIn{from{opacity:0;transform:translateY(10px);}to{opacity:1;transform:none;}}

.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
.form-group{margin-bottom:15px;min-width:0;}
.form-group>label{display:block;font-size:13px;font-weight:600;color:var(--txt-dim);margin-bottom:7px;}
.input,.textarea,.select{
  width:100%;background:var(--field);border:1px solid var(--field-brd);border-radius:12px;
  padding:12px 14px;font-size:14px;color:var(--txt);transition:border-color .25s,background .25s;
}
.textarea{resize:vertical;min-height:96px;line-height:1.6;}
.input:focus,.textarea:focus,.select:focus{border-color:var(--accent);background:var(--card);}
.select{appearance:none;-webkit-appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%23888' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;padding-right:38px;}

/* 分段（加/解密） */
.seg{display:grid;grid-template-columns:1fr 1fr;gap:5px;padding:5px;background:var(--seg-bg);border-radius:13px;}
.seg-btn{height:38px;border-radius:9px;font-size:14px;font-weight:600;color:var(--txt-dim);transition:all .25s;}
.seg-btn.on{background:var(--card);color:var(--accent);box-shadow:0 4px 12px rgba(30,40,80,.12);}

/* 密钥强度 */
.strength-bar{height:6px;background:var(--seg-bg);border-radius:4px;margin-top:9px;overflow:hidden;}
.strength-bar i{display:block;height:100%;width:0;border-radius:4px;transition:width .3s,background .3s;}
.strength-tag{font-size:12px;color:var(--txt-faint);margin-top:5px;height:16px;}

/* 开关 */
.switch-row{display:flex;align-items:center;gap:10px;font-size:14px;font-weight:500;}
.switch{position:relative;display:inline-block;width:46px;height:26px;flex:none;}
.switch input{position:absolute;opacity:0;width:100%;height:100%;margin:0;}
.slider{position:absolute;inset:0;background:#c3cad8;border-radius:999px;transition:.3s;}
.slider:before{content:"";position:absolute;height:20px;width:20px;left:3px;top:3px;background:#fff;border-radius:50%;transition:.3s;box-shadow:0 2px 5px rgba(0,0,0,.2);}
.switch input:checked+.slider{background:var(--accent);}
.switch input:checked+.slider:before{transform:translateX(20px);}

/* 结果框 */
.result-box{margin-top:16px;background:linear-gradient(180deg,var(--card),var(--field));
  border:1px solid var(--field-brd);border-left:3px solid var(--accent);
  border-radius:14px;padding:16px 16px 18px;position:relative;overflow:hidden;
  box-shadow:0 8px 24px rgba(30,40,80,.06);animation:paneIn .35s;}
.result-box::before{content:"";position:absolute;top:0;right:0;width:96px;height:96px;
  background:radial-gradient(circle at top right,rgba(47,107,255,.09),transparent 70%);pointer-events:none;}
.result-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px;}
.tag{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:700;
  color:var(--accent);background:rgba(47,107,255,.1);padding:5px 12px;border-radius:999px;}
.tag::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--accent);}
.copy-btn{font-size:12px;padding:6px 14px;border-radius:9px;background:var(--seg-bg);color:var(--txt-dim);font-weight:600;transition:background .2s,color .2s;}
.copy-btn:active{background:var(--accent);color:#fff;}
.result-body{font-size:15px;word-break:break-word;line-height:1.7;background:var(--card);
  border:1px dashed var(--field-brd);border-radius:10px;padding:14px;margin-top:6px;}
.mono{font-family:ui-monospace,'SF Mono',Menlo,Consolas,monospace;}

/* 上传区 */
.upload-zone{border:2px dashed var(--field-brd);border-radius:15px;padding:30px 18px;text-align:center;
  background:var(--field);transition:border-color .25s,background .25s;cursor:pointer;}
.upload-zone.drag,.upload-zone:active{border-color:var(--accent);background:rgba(47,107,255,.06);}
.up-icon{display:grid;place-items:center;width:48px;height:48px;margin:0 auto 10px;border-radius:13px;background:var(--seg-bg);color:var(--accent);}
.up-icon .ico{width:24px;height:24px;}
.up-tip{font-size:14px;font-weight:600;}
.up-sub{font-size:12px;color:var(--txt-faint);margin-top:5px;}
.upload-preview{margin-top:12px;display:flex;gap:12px;align-items:center;background:var(--field);border-radius:12px;padding:10px;}
.upload-preview img{width:72px;height:72px;object-fit:cover;border-radius:9px;}
.preview-meta{font-size:12px;color:var(--txt-dim);word-break:break-all;}

/* 预设底图 / 音频 */
.preset-head{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:9px;flex-wrap:wrap;gap:4px;}
.ptitle{display:inline-flex;align-items:center;gap:7px;font-size:13px;font-weight:700;color:var(--txt-dim);}
.pmute{font-size:11px;color:var(--txt-faint);}
.preset-scroll{display:flex;gap:11px;overflow-x:auto;padding-bottom:8px;-webkit-overflow-scrolling:touch;}
.preset-scroll::-webkit-scrollbar,.preset-audio::-webkit-scrollbar{height:7px;}
.preset-scroll::-webkit-scrollbar-thumb,.preset-audio::-webkit-scrollbar-thumb{background:#c2c8d6;border-radius:5px;}
.di-item{flex:0 0 104px;text-align:center;cursor:pointer;border-radius:12px;padding:7px;border:2px solid transparent;transition:all .25s;background:var(--field);}
.di-item img{width:90px;height:90px;object-fit:cover;border-radius:8px;margin:0 auto;}
.di-item span{display:block;font-size:11px;color:var(--txt-dim);margin-top:6px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.di-item.di-on{border-color:var(--accent);box-shadow:0 6px 16px rgba(47,107,255,.2);}
.preset-audio{display:flex;gap:10px;overflow-x:auto;padding-bottom:8px;}
.pa-item{flex:0 0 auto;display:flex;align-items:center;gap:8px;padding:10px 14px;border-radius:12px;background:var(--field);border:2px solid transparent;font-size:13px;font-weight:600;color:var(--txt-dim);cursor:pointer;white-space:nowrap;}
.pa-item .ico{width:20px;height:20px;color:var(--accent);}
.pa-item.pa-on{border-color:var(--accent);color:var(--accent);}

/* 对比说明 */
.compare-help{display:flex;gap:13px;background:var(--field);border:1px solid var(--field-brd);border-radius:14px;padding:15px;margin-bottom:16px;}
.compare-help-ico{flex:none;width:42px;height:42px;border-radius:12px;background:rgba(47,107,255,.12);color:var(--accent);display:grid;place-items:center;}
.compare-help b{font-size:15px;}
.compare-help p{margin:5px 0 0;font-size:13px;color:var(--txt-dim);}

/* ---------- 区块标题 / 特性 ---------- */
.section{padding:70px 0;}
.section-head{text-align:center;margin-bottom:44px;}
.kicker{display:inline-block;font-size:13px;font-weight:700;letter-spacing:3px;color:var(--accent);}
.section-head h2{font-size:clamp(26px,4vw,38px);font-weight:900;margin:12px 0 0;}
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.feature-card{background:var(--glass);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border:1px solid var(--glass-brd);
  border-radius:var(--radius);padding:28px 24px;box-shadow:var(--glass-sh);transition:transform .35s cubic-bezier(.2,.7,.2,1);}
.feature-card:hover{transform:translateY(-7px);}
.f-icon{width:56px;height:56px;border-radius:16px;display:grid;place-items:center;margin-bottom:16px;
  background:rgba(47,107,255,.1);color:var(--accent);}
.f-icon .ico{width:27px;height:27px;}
.feature-card h3{margin:0 0 9px;font-size:18px;font-weight:800;}
.feature-card p{margin:0;font-size:14px;color:var(--txt-dim);line-height:1.7;}

/* ---------- 教程 ---------- */
.tutorial-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.tutorial-card{position:relative;background:var(--card);border:1px solid var(--field-brd);border-radius:var(--radius);
  padding:28px 24px 24px;box-shadow:0 8px 26px rgba(30,40,80,.08);transition:transform .35s;}
.tutorial-card:hover{transform:translateY(-5px);}
.t-head{display:flex;align-items:center;gap:12px;margin-bottom:20px}
.t-ico{width:44px;height:44px;flex:0 0 44px;border-radius:13px;background:rgba(47,107,255,.1);color:var(--accent);display:grid;place-items:center}
.t-ico .ico{width:23px;height:23px}
.tutorial-card h3{margin:0;font-size:17px;font-weight:800}
.tutorial-card ol{margin:0;padding-left:0;list-style:none;counter-reset:s;}
.tutorial-card li{counter-increment:s;position:relative;padding:7px 0 7px 32px;font-size:14px;color:var(--txt-dim);border-bottom:1px dashed var(--field-brd);}
.tutorial-card li:last-child{border-bottom:none;}
.tutorial-card li:before{content:counter(s);position:absolute;left:0;top:8px;width:21px;height:21px;border-radius:50%;background:var(--seg-bg);color:var(--accent);font-size:11px;font-weight:700;display:grid;place-items:center;}

/* 滚动进入动画 */
.feature-card,.tutorial-card,.section-head{opacity:0;transform:translateY(26px);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1);}
.feature-card.in,.tutorial-card.in,.section-head.in{opacity:1;transform:none;}

/* ---------- 页脚 ---------- */
.footer{margin-top:40px;background:var(--glass-strong);border-top:1px solid var(--glass-brd);backdrop-filter:blur(18px);}
.footer-inner{width:min(1080px,92vw);margin:0 auto;padding:54px 0 30px;display:grid;grid-template-columns:1.4fr 1fr;gap:34px;}
.footer-brand span .logo-svg{width:40px;height:40px;}
.footer-brand b{display:block;font-size:19px;font-weight:800;margin:12px 0 8px;}
.footer-brand p{margin:0;font-size:13px;color:var(--txt-dim);}
.footer-links h4{margin:0 0 14px;font-size:15px;font-weight:800;}
.fl-list{display:flex;flex-direction:column;gap:9px;}
.fl-list a{font-size:14px;color:var(--txt-dim);transition:color .2s;}
.fl-list a:hover{color:var(--accent);}
.footer-bottom{border-top:1px solid var(--glass-brd);padding:18px 0;display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;
  width:min(1080px,92vw);margin:0 auto;font-size:12.5px;color:var(--txt-faint);}

/* ---------- 首页弹窗公告 ---------- */
.ann-modal{position:fixed;inset:0;z-index:120;display:flex;align-items:center;justify-content:center;padding:20px;
  opacity:0;transition:opacity .32s;}
.ann-modal.show{opacity:1;}
.ann-mask{position:absolute;inset:0;background:rgba(20,26,45,.42);backdrop-filter:blur(6px);}
.ann-pop{position:relative;width:min(440px,94vw);background:var(--glass-strong);backdrop-filter:blur(26px) saturate(180%);
  border:1px solid var(--glass-brd);border-radius:20px;padding:26px 24px 22px;box-shadow:0 24px 70px rgba(15,22,50,.35);
  max-height:84vh;display:flex;flex-direction:column;
  transform:scale(.9) translateY(14px);transition:transform .38s cubic-bezier(.2,.8,.2,1);}
.ann-modal.show .ann-pop{transform:none;}
.ann-x{position:absolute;top:12px;right:12px;font-size:22px;color:var(--txt-faint);width:34px;height:34px;border-radius:10px;display:grid;place-items:center;z-index:2;}
.ann-x:active{background:var(--seg-bg);}
.ann-body{font-size:14.5px;line-height:1.7;padding-right:42px;overflow:auto;min-height:0;flex:1;}
.ann-actions{text-align:right;margin-top:18px;}
.ann-actions .btn-primary{height:42px;padding:0 24px;font-size:14px;}
.ann-scope{max-height:52vh;overflow:auto;word-break:break-word;}
.ann-scope h1,.ann-scope h2,.ann-scope h3{margin:.4em 0 .5em;line-height:1.4;}
.ann-scope p{margin:.5em 0;}
.ann-scope a{color:var(--accent);text-decoration:underline;}
.ann-scope img,.ann-scope video{max-width:100%;height:auto;border-radius:10px;}
.ann-scope *{max-width:100%;}

/* ---------- toast ---------- */
.san-toast{position:fixed;left:50%;bottom:44px;transform:translate(-50%,30px);z-index:200;
  background:var(--glass-strong);backdrop-filter:blur(20px) saturate(170%);border:1px solid var(--glass-brd);
  color:var(--txt);padding:12px 22px;border-radius:13px;font-size:14px;font-weight:600;
  box-shadow:0 14px 40px rgba(20,28,55,.25);opacity:0;transition:opacity .3s,transform .3s;max-width:88vw;text-align:center;}
.san-toast.show{opacity:1;transform:translate(-50%,0);}
.san-toast.ok{color:var(--ok);}
.san-toast.err{color:var(--err);}

@keyframes fadeUp{from{opacity:0;transform:translateY(22px);}to{opacity:1;transform:none;}}

/* ============================================================
   响应式
   ============================================================ */
@media (min-width:761px){
  /* 电脑端：不显示三条杠，菜单直接排在导航上；黑夜切换在右侧 */
  .menu-btn{display:none;}
  .nav-links{order:98;}
  .theme-btn{order:99;}
}
@media (max-width:860px){
  .features{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:760px){
  .nav-links{position:fixed;top:62px;right:0;width:min(280px,74vw);
    height:calc(100vh - 62px);height:calc(100dvh - 62px);
    flex-direction:column;align-items:stretch;
    gap:6px;padding:18px 16px;background:var(--glass-strong);backdrop-filter:blur(26px) saturate(180%);
    border-left:1px solid var(--glass-brd);box-shadow:-12px 0 40px rgba(15,22,50,.2);
    transform:translateX(105%);transition:transform .34s cubic-bezier(.2,.8,.2,1);overflow-y:auto;}
  .nav-links.open{transform:none;}
  .nav-link,.nav-cta{height:48px;font-size:15px;padding:0 16px;}
  .form-row{grid-template-columns:1fr;gap:0;}
  .features{grid-template-columns:1fr;}
  .tutorial-grid{grid-template-columns:1fr;}
  .footer-inner{grid-template-columns:1fr;gap:26px;}
  .hero{padding:128px 0 70px;}
}
@media (max-width:420px){
  .tool-tabs{grid-template-columns:repeat(2,1fr);}
  .tool-tab{font-size:12.5px;gap:4px;height:40px;padding:0 2px;}
  .logo-txt{font-size:15px;}
  .btn-primary,.btn-ghost{padding:0 20px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms!important;transition-duration:.01ms!important;}
}

/* ===== 我的密语：记录行 / 状态 / 分页 ===== */
.mine-row{padding:13px 4px;border-bottom:1px solid var(--line)}
.mine-row:last-child{border-bottom:none}
.mine-title{font-size:14.5px;display:flex;align-items:center;flex-wrap:wrap;gap:4px}
.mine-date{font-size:12px;margin-top:5px}
.mine-actions{display:flex;gap:8px;flex-wrap:nowrap;overflow-x:auto;margin-top:10px;padding-bottom:4px;}
.mine-actions::-webkit-scrollbar{height:8px;}
.mine-actions::-webkit-scrollbar-thumb{background:#c2c8d6;border-radius:5px;}
.mine-btn{padding:7px 14px;font-size:12.5px;border-radius:9px;flex:0 0 auto;white-space:nowrap;}
.st-expired{color:var(--err);font-weight:600}
.st-burn{color:#d98324;font-weight:600}
.st-read{color:var(--brand);font-weight:600}
.st-fav{color:#e0a92e}
.page-btn{padding:7px 13px;font-size:13px;margin:3px;border-radius:9px}
.page-on{background:var(--brand);color:#fff;border-color:transparent}
/* ===== 通用遮罩 / 确认框 ===== */
.san-mask{position:fixed;inset:0;z-index:220;display:flex;align-items:center;justify-content:center;padding:20px;background:rgba(28,38,66,.26);backdrop-filter:blur(5px);-webkit-backdrop-filter:blur(5px);opacity:0;transition:opacity .24s}
.san-mask.show{opacity:1}
.san-confirm{width:100%;max-width:330px;padding:22px;opacity:0;transform:translateY(12px) scale(.97);transition:.26s cubic-bezier(.2,.7,.2,1)}
.san-mask.show .san-confirm{opacity:1;transform:none}
.cf-msg{font-size:15px;line-height:1.6;margin-bottom:20px;word-break:break-word}
.cf-btns{display:flex;gap:10px;justify-content:flex-end}
.cf-btns button{padding:9px 18px;border-radius:10px;font-size:14px}
/* ===== 我的密语查看弹层 ===== */
.view-mask{position:fixed;inset:0;z-index:200;display:none;align-items:center;justify-content:center;padding:18px;background:rgba(28,38,66,.3);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)}
.view-mask.show{display:flex}
.view-modal{width:100%;max-width:520px;max-height:88vh;overflow-y:auto;-webkit-overflow-scrolling:touch;padding:22px}

/* ===== 登录 / 注册 ===== */
.auth-wrap{min-height:calc(100vh - 60px);display:flex;align-items:center;justify-content:center;padding:92px 20px 60px}
.auth-card{width:100%;max-width:410px;padding:32px 30px;border-radius:22px;animation:authIn .6s cubic-bezier(.2,.7,.2,1)}
@keyframes authIn{from{opacity:0;transform:translateY(18px) scale(.98)}to{opacity:1;transform:none}}
.auth-card h2{font-size:23px;margin-bottom:6px}
.auth-sub{font-size:13.5px;color:var(--txt-dim);line-height:1.7;margin-bottom:22px}
.auth-card .form-group{margin-bottom:16px}
.auth-card .btn-block{margin-top:6px;height:50px;border-radius:13px;font-size:16px}
.auth-foot{text-align:center;font-size:13.5px;color:var(--txt-dim);margin-top:20px}
.auth-foot a{color:var(--brand);font-weight:600}
.auth-switch{display:flex;gap:10px;margin-bottom:16px}
.auth-switch button{flex:1;height:44px;border-radius:11px;border:1px solid var(--line);background:var(--card2);color:var(--txt-dim);font-size:14px;font-weight:600;cursor:pointer;transition:.2s}
.auth-switch button.on{background:var(--brand);color:#fff;border-color:transparent}
.auth-code-row{display:flex;gap:10px}
.auth-code-row .input{flex:1}
.auth-code-row button{white-space:nowrap;padding:0 16px;height:48px;border-radius:12px;border:1px solid var(--line);background:var(--card2);color:var(--brand);font-size:13.5px;font-weight:600;cursor:pointer}
.auth-code-row button:disabled{color:var(--txt-faint);cursor:not-allowed}

/* ===== 明显的滚动条（横/竖向） ===== */
.table-wrap,.rv-box,.ann-scope{scrollbar-width:auto}
*::-webkit-scrollbar{width:11px;height:11px}
*::-webkit-scrollbar-track{background:transparent}
*::-webkit-scrollbar-thumb{background:#c3cad8;border-radius:8px;border:2px solid transparent;background-clip:content-box}
*::-webkit-scrollbar-thumb:hover{background:#a7b0c2;background-clip:content-box}
*::-webkit-scrollbar-corner{background:transparent}

/* ===== 下拉菜单：图标左、文字右、垂直居中不重叠 ===== */
.layui-dropdown-menu .layui-menu-body-title{display:flex!important;align-items:center;gap:9px;padding:9px 14px!important;}
.layui-dropdown-menu .layui-menu-body-title .layui-icon{margin-right:0!important;font-size:16px;flex:0 0 auto;}
.layui-dropdown-menu li:hover .layui-menu-body-title{color:inherit;}