/* ============================================================
   东南教育 · 家长公开区视觉系统 v3
   「学理图谱 / The Learning Atlas」
   ------------------------------------------------------------
   设计语汇：象牙实验纸 + 墨蓝 + 实验青 + 朱砂标注
   坐标网格底纹 / 边缘测量标尺 / 章节编号 / 论文式图注
   ------------------------------------------------------------
   约束：仅作用于 public/index.html；不改动任何 DOM 结构、文案、
   链接、交互钩子；保留无 JS 降级、reduced-motion 与打印样式。
   ============================================================ */

/* ---------- 自托管字体（沿用 v2 子集，零新增请求） ---------- */
@font-face{font-family:"SE Serif";src:url("/assets/fonts/se-serif-600.woff2") format("woff2");font-weight:600;font-style:normal;font-display:swap}
@font-face{font-family:"SE Serif";src:url("/assets/fonts/se-serif-700.woff2") format("woff2");font-weight:700;font-style:normal;font-display:swap}
@font-face{font-family:"SE Num";src:url("/assets/fonts/se-num-400.woff2") format("woff2");font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:"SE Num";src:url("/assets/fonts/se-num-700.woff2") format("woff2");font-weight:700;font-style:normal;font-display:swap}
@font-face{font-family:"SE Num";src:url("/assets/fonts/se-num-800.woff2") format("woff2");font-weight:800;font-style:normal;font-display:swap}
@font-face{font-family:"Cormorant Garamond";src:url("/assets/fonts/se-lat-600-italic.woff2") format("woff2");font-weight:600;font-style:italic;font-display:swap}

/* ---------- 设计令牌 60 / 30 / 10 ---------- */
:root{
  /* 60% 纸 */
  --paper:#F4F1E8; --paper2:#EDE8DA; --paper3:#E2DAC8; --white:#FCFAF5;
  /* 30% 墨蓝 */
  --ink:#12293A; --ink2:#1B3A50; --night:#0B1D2B; --night2:#102838;
  /* 10% 实验青 + 极少量朱砂 */
  --teal:#0A6E70; --teal-lt:#46B7B0; --teal-dp:#075253;
  --vermilion:#B23A2C; --vermilion-lt:#E4775F; --brand:#9E0F26;
  /* 文字 */
  --graphite:#51636E; --night-ink:#F4F1E8; --night-muted:#A9BCC7; --night-dim:#7E96A4;
  /* 线 */
  --line:rgba(18,41,58,.20); --line-soft:rgba(18,41,58,.10);
  --nline:rgba(70,183,176,.22); --nline2:rgba(70,183,176,.42);
  --grid:rgba(18,41,58,.052);
  /* 字体 */
  --serif:"SE Serif","Noto Serif SC","Songti SC",SimSun,serif;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Segoe UI",sans-serif;
  --num:"SE Num","Manrope","Segoe UI",sans-serif;
  --lat:"Cormorant Garamond",Georgia,serif;
  --max:1320px; --pad:clamp(18px,4vw,44px); --ease:cubic-bezier(.16,1,.3,1);
}

/* ---------- 基础 ---------- */
*{box-sizing:border-box}
html{overflow-x:hidden;scroll-behavior:smooth}
body{margin:0;color:var(--ink);font-family:var(--sans);font-size:15px;line-height:1.85;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
.landing{
  background-color:var(--paper);
  background-image:
    linear-gradient(90deg,var(--grid) 1px,transparent 1px),
    linear-gradient(0deg,var(--grid) 1px,transparent 1px),
    linear-gradient(90deg,rgba(18,41,58,.075) 1px,transparent 1px),
    linear-gradient(0deg,rgba(18,41,58,.075) 1px,transparent 1px);
  background-size:22px 22px,22px 22px,110px 110px,110px 110px;
  background-attachment:fixed;
  counter-reset:sec;
}
img{max-width:100%;display:block}
a{color:inherit}
h1,h2,h3{font-family:var(--serif);font-weight:600;letter-spacing:-.015em;margin:0}
.serif{font-family:var(--serif)}
.num{font-family:var(--num);font-variant-numeric:tabular-nums}
.wrap{max-width:var(--max);margin:0 auto;padding:0 var(--pad);position:relative}
.kicker{font-family:var(--num);font-size:10px;letter-spacing:.28em;text-transform:uppercase;font-weight:700;margin:0 0 14px;display:flex;align-items:center;gap:9px}
.kicker::before{content:"";width:14px;height:2px;background:currentColor;flex:none}
.kicker.red{color:var(--vermilion)}
.kicker.gold,.kicker.gold-l{color:var(--teal-lt)}
.lead{font-size:14px;line-height:2;color:var(--graphite);margin:0}
.tiny{font-size:11px;color:var(--graphite);margin:12px 0 0}
.tiny a{text-decoration:underline;text-underline-offset:3px}
.skip{position:absolute;left:-9999px;top:0;background:var(--ink);color:var(--paper);padding:10px 16px;z-index:99}
.skip:focus{left:12px;top:12px}
:focus-visible{outline:2px solid var(--teal);outline-offset:3px}

/* ---------- 左缘测量标尺（单一难忘元素之一） ---------- */
.ruler{position:fixed;left:0;top:0;bottom:0;width:26px;z-index:30;pointer-events:none;
  background:linear-gradient(180deg,rgba(244,241,232,.97),rgba(244,241,232,.90));
  border-right:1px solid var(--line)}
.ruler::before{content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(180deg,transparent 0 7px,rgba(18,41,58,.30) 7px 8px,transparent 8px 16px);
  -webkit-mask-image:linear-gradient(90deg,transparent 0 45%,#000 45% 100%);
  mask-image:linear-gradient(90deg,transparent 0 45%,#000 45% 100%)}
.ruler::after{content:"SOUTHEAST EDUCATION  ·  LEARNING ATLAS  ·  SCALE 0—100";
  position:absolute;bottom:180px;left:50%;transform:translateX(-50%) rotate(-90deg);transform-origin:center;
  white-space:nowrap;font:700 8px var(--num);letter-spacing:.26em;color:var(--graphite)}

/* ============================================================
   1 · 首屏：纸面 + 墨蓝图谱，硬分割不对称
   ============================================================ */
.cover{position:relative;overflow:hidden;background:transparent;color:var(--ink)}
.cover::before{content:"";position:absolute;top:0;right:0;bottom:0;width:42%;z-index:0;
  background:var(--night);
  border-left:1px solid rgba(70,183,176,.28)}
.cover::after{content:"";position:absolute;top:0;right:0;bottom:0;width:42%;z-index:0;pointer-events:none;
  background-image:
    linear-gradient(90deg,rgba(70,183,176,.075) 1px,transparent 1px),
    linear-gradient(0deg,rgba(70,183,176,.075) 1px,transparent 1px);
  background-size:26px 26px}
.cover>*{position:relative;z-index:1}

.covtop{display:flex;align-items:center;gap:14px;padding-top:18px;padding-bottom:18px;z-index:3;
  border-bottom:1px solid var(--line);background:var(--paper);
  font-family:var(--num);font-size:9.5px;letter-spacing:.24em;text-transform:uppercase;color:var(--graphite)}
/* 导航纸色横条铺满视口，避免右侧墨蓝块在 wrap 外露出接缝 */
.covtop::before{content:"";position:absolute;left:50%;top:0;bottom:0;width:100vw;
  transform:translateX(-50%);background:var(--paper);z-index:-1}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);flex:none}
.brand img{border-radius:50%;box-shadow:0 0 0 1px var(--line)}
.brand-t{font-family:var(--serif);font-size:16px;letter-spacing:.12em;text-transform:none;font-weight:700}
.brand-t small{display:block;font-family:var(--num);font-size:8px;letter-spacing:.24em;color:var(--teal);margin-top:1px}
.covtop-sp{flex:1}
.covnav{display:flex;gap:25px;font-family:var(--sans);font-size:12px;letter-spacing:.04em;text-transform:none;color:var(--graphite)}
.covnav a{text-decoration:none;color:inherit;transition:color .24s var(--ease);white-space:nowrap}
.covnav a:hover{color:var(--teal)}

/* ---------- 按钮系统（保留分层/光泽/箭头交互，换学术质感） ---------- */
.btn-cream,.btn-red,.ghost-cream{position:relative;display:inline-flex;align-items:center;justify-content:center;gap:12px;
  padding:14px 22px;font:700 12px var(--num);letter-spacing:.14em;text-decoration:none;white-space:nowrap;
  border:1px solid transparent;overflow:hidden;transition:transform .3s var(--ease),box-shadow .3s var(--ease),background .3s var(--ease),color .3s var(--ease)}
.btn-cream{background:var(--ink);color:var(--paper);border-color:var(--ink);box-shadow:0 3px 0 var(--teal-dp)}
.btn-cream::after,.btn-red::after,.ghost-cream::after{content:"";position:absolute;top:0;bottom:0;left:-140%;width:60%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,.22),transparent);transform:skewX(-20deg);
  transition:left .85s var(--ease);pointer-events:none}
.btn-cream:hover::after,.btn-red:hover::after,.ghost-cream:hover::after{left:150%}
.btn-cream:hover,.btn-red:hover{transform:translateY(-2px);box-shadow:0 6px 0 var(--teal-dp),0 12px 24px rgba(11,29,43,.18)}
.btn-cream:active,.btn-red:active{transform:translateY(1px);box-shadow:0 1px 0 var(--teal-dp)}
.btn-cream:focus-visible,.btn-red:focus-visible,.ghost-cream:focus-visible{outline:2px solid var(--teal-lt);outline-offset:3px}
.btn-red{background:var(--ink);color:var(--paper);border-color:var(--ink);box-shadow:0 3px 0 var(--vermilion)}
.ghost-cream{background:transparent;color:var(--ink);border-color:var(--line)}
.ghost-cream:hover{transform:translateY(-2px);border-color:var(--teal);color:var(--teal)}
.btn-cream.sm{padding:9px 15px;font-size:10px;letter-spacing:.16em}
.ar{width:16px;height:16px;flex:none;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;transition:transform .3s var(--ease)}
.btn-cream:hover .ar,.btn-red:hover .ar,.ghost-cream:hover .ar{transform:translateX(4px)}
.btn-cream:hover .ar.up,.ghost-cream:hover .ar.up{transform:translateY(-4px)}
.cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}

/* ---------- 首屏主网格 ---------- */
.comain{display:grid;grid-template-columns:57% 43%;grid-template-rows:auto 1fr;
  grid-template-areas:"lines atlas" "head atlas";gap:0 24px;
  padding-top:46px;padding-bottom:52px;min-height:540px}
.clines{grid-area:lines;display:grid;grid-template-columns:repeat(3,1fr);gap:20px;align-self:start}
.cl{border-top:1px solid var(--line);padding-top:12px}
.cl b{display:block;font-family:var(--lat);font-style:italic;font-weight:600;font-size:17px;letter-spacing:0;color:var(--teal);margin-bottom:4px}
.cl p{font-size:12px;line-height:1.75;color:var(--graphite);margin:0}
.chead{grid-area:head;align-self:center;padding:34px 26px 10px 0}
.chead h1{font-size:clamp(48px,5.9vw,88px);line-height:1.14;letter-spacing:-.045em;color:var(--ink);font-weight:700}
.chead h1 em{font-style:normal;color:var(--vermilion);position:relative;white-space:nowrap}
.chead h1 em::after{content:"";position:absolute;left:2px;right:2px;bottom:4px;height:2px;background:var(--vermilion);opacity:.45}
.dek{font-size:14.5px;line-height:1.95;color:var(--graphite);max-width:510px;margin:22px 0 0;
  padding-left:16px;border-left:2px solid var(--teal)}
.cover .kicker.gold-l{color:var(--teal)}

/* ---------- 63 维极坐标图谱（核心记忆点） ---------- */
.atlas{grid-area:atlas;align-self:stretch;display:flex;flex-direction:column;justify-content:space-between;
  padding:20px 0 22px 28px;min-width:0;color:var(--night-ink)}
.atlas-cap{display:flex;justify-content:space-between;align-items:baseline;gap:12px;
  font:700 9px var(--num);letter-spacing:.22em;text-transform:uppercase;color:var(--teal-lt);
  border-bottom:1px solid var(--nline);padding-bottom:10px}
.atlas-cap i{font-style:normal;color:var(--night-dim)}
.atlas svg{width:100%;height:auto;max-height:452px;display:block;overflow:visible}
.atlas-foot{display:flex;justify-content:space-between;gap:12px;
  border-top:1px solid var(--nline);padding-top:10px;
  font:700 8.5px var(--num);letter-spacing:.18em;text-transform:uppercase;color:var(--night-dim)}
.atlas .a-grid{fill:none;stroke:rgba(70,183,176,.16);stroke-width:1}
.atlas .a-spoke{stroke:rgba(169,188,199,.24);stroke-width:1}
.atlas .a-tick{stroke:rgba(70,183,176,.62)}
.atlas .a-tickhi{stroke:var(--vermilion-lt)}
.atlas .a-avg{fill:none;stroke:#A9BCC7;stroke-width:1.2;stroke-dasharray:4 4;opacity:.75}
.atlas .a-now{fill:rgba(70,183,176,.16);stroke:var(--teal-lt);stroke-width:2;stroke-linejoin:round}
.atlas .a-node{fill:var(--teal-lt)}
.atlas .a-nodehi{fill:var(--vermilion-lt)}
.atlas .a-watermark{fill:rgba(70,183,176,.085);font:800 132px var(--num);letter-spacing:-.06em}
.atlas .a-label{fill:#A9BCC7;font:600 10.5px var(--sans);letter-spacing:.04em}
.atlas .a-scale{fill:var(--night-dim);font:700 9px var(--num);letter-spacing:.1em}
.atlas .a-callout{fill:var(--teal-lt);font:700 10px var(--num);letter-spacing:.14em}
.atlas .a-leader{stroke:rgba(70,183,176,.55);stroke-width:1;fill:none}
.atlas .a-sym{fill:rgba(70,183,176,.20);font:italic 600 30px var(--lat)}

/* ---------- 首屏示例报告 = 实验记录板 ---------- */
.cover-report{padding-bottom:0}
.report-card{display:grid;grid-template-columns:37% 63%;background:var(--white);
  border:1px solid var(--line);box-shadow:0 20px 54px rgba(11,29,43,.16);
  transform:perspective(1200px) rotateX(var(--rx,0deg)) rotateY(var(--ry,0deg));
  transition:transform .35s var(--ease);will-change:transform}
.rc-intro{position:relative;padding:26px 26px 24px 38px;border-right:1px solid var(--line);display:flex;flex-direction:column}
.rc-intro::before{content:"";position:absolute;left:13px;top:24px;bottom:24px;width:10px;
  background-image:radial-gradient(circle,rgba(18,41,58,.20) 2px,transparent 2.6px);background-size:10px 28px}
.rc-brand{display:flex;align-items:center;gap:8px;font-size:10.5px;color:var(--graphite);letter-spacing:.04em}
.rc-brand img{opacity:.9}
.live{display:inline-flex;align-items:center;gap:5px;margin-left:auto;font:700 8px var(--num);letter-spacing:.16em;
  color:var(--teal);border:1px solid var(--teal);padding:3px 7px;font-style:normal;white-space:nowrap}
.live u{width:5px;height:5px;border-radius:50%;background:var(--teal);text-decoration:none;animation:pulse 1.8s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.25}}
.rc-intro h2{font-size:23px;line-height:1.5;margin:18px 0 8px}
.rc-meta{font-size:10.5px;color:var(--graphite);margin:0}
.rc-pager{display:flex;align-items:center;gap:12px;margin-top:auto;padding-top:22px}
.rc-dots{display:flex;gap:5px;flex:1}
.rc-dots button{position:relative;flex:1;height:20px;padding:0;border:0;background:transparent;cursor:pointer}
.rc-dots button i{position:absolute;left:0;right:0;top:8px;height:3px;background:var(--line);display:block;overflow:hidden}
.rc-dots button i::after{content:"";position:absolute;inset:0;background:var(--teal);transform:scaleX(0);transform-origin:left}
.rc-dots button[aria-selected="true"] i::after{transform:scaleX(1)}
.rc-dots.paused button[aria-selected="true"] i::after{animation:none}
.rc-dots:not(.paused) button[aria-selected="true"] i::after{animation:fillPage 4.8s linear forwards}
@keyframes fillPage{from{transform:scaleX(0)}to{transform:scaleX(1)}}
.rc-pagename{font:700 9px var(--num);letter-spacing:.12em;color:var(--teal);white-space:nowrap}
.rc-ctrl{flex:none;width:28px;height:28px;border-radius:50%;border:1px solid var(--line);background:transparent;
  display:grid;place-items:center;cursor:pointer;color:var(--ink);transition:border-color .25s,color .25s}
.rc-ctrl:hover{border-color:var(--teal);color:var(--teal)}
.rc-ctrl svg{width:13px;height:13px;fill:currentColor}
.rc-ctrl .ic-play{display:none}
.report-card.paused .rc-ctrl .ic-play{display:block}
.report-card.paused .rc-ctrl .ic-pause{display:none}
.rc-more{display:inline-flex;align-items:center;gap:8px;margin-top:16px;font:700 10px var(--num);letter-spacing:.12em;
  text-decoration:none;color:var(--teal);border-bottom:1px solid var(--teal);padding-bottom:4px;align-self:flex-start}
.rc-more .ar{width:13px;height:13px}

.rc-stage{position:relative;padding:26px 30px;min-height:258px;
  background-image:linear-gradient(90deg,rgba(18,41,58,.035) 1px,transparent 1px),
                   linear-gradient(0deg,rgba(18,41,58,.035) 1px,transparent 1px);
  background-size:22px 22px}
.rc-stage::before{content:"SAMPLE / 01";position:absolute;right:28px;top:12px;
  font:700 8px var(--num);letter-spacing:.2em;color:var(--line)}
.rc-page{display:none}
.rc-page.on{display:block;animation:pageIn .5s var(--ease)}
@keyframes pageIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.rc-kpis{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;border-bottom:1px solid var(--line);padding-bottom:18px}
.rc-kpis div{display:flex;flex-direction:column;gap:2px;border-left:2px solid var(--teal);padding-left:12px}
.rc-kpis b{font-size:34px;font-weight:800;line-height:1.1;color:var(--ink)}
.rc-kpis b em{font-style:normal;color:var(--vermilion)}
.rc-kpis span{font-size:10px;color:var(--graphite);letter-spacing:.06em}
.rc-bars{margin-top:18px;display:flex;flex-direction:column;gap:11px}
.rb{display:grid;grid-template-columns:42px 1fr 38px;gap:12px;align-items:center;font-size:11px;color:var(--graphite)}
.rb i{height:5px;background:var(--line-soft);display:block;position:relative}
.rb u{position:absolute;left:0;top:0;bottom:0;width:var(--w);background:var(--teal);text-decoration:none;
  transform-origin:left;animation:growBar .8s var(--ease) both}
@keyframes growBar{from{transform:scaleX(0)}to{transform:scaleX(1)}}
.rb b{text-align:right;font-size:12px;color:var(--ink)}
.rc-note{margin:18px 0 0;font-size:10.5px;color:var(--graphite);border-top:1px dashed var(--line);padding-top:10px}
.rc-note::before{content:"FIG. 01  ";font-family:var(--num);font-weight:700;letter-spacing:.14em;color:var(--teal)}
.rc-label{font-size:11px;font-weight:700;letter-spacing:.14em;color:var(--teal);margin-bottom:22px}
.rc-stack{display:flex;height:38px;gap:2px;margin:20px 0 14px}
.rc-stack i{display:block;flex:var(--v);background:var(--teal);transform-origin:left;animation:growBar .8s var(--ease) both}
.rc-stack .st2{background:#7FB8B4}
.rc-stack .st3{background:var(--vermilion-lt)}
.rc-legend{list-style:none;display:flex;gap:20px;padding:0;margin:0;font-size:11px;color:var(--graphite);flex-wrap:wrap}
.rc-legend b{color:var(--ink);margin-right:5px}
.rc-two{display:grid;grid-template-columns:150px 1fr;gap:22px;align-items:center;margin-top:6px}
.rc-radar{width:150px;height:150px}
.rc-radar .rg{fill:none;stroke:var(--line);stroke-width:1}
.rc-radar .ravg{fill:none;stroke:var(--graphite);stroke-dasharray:3 3}
.rc-radar .rnow{fill:rgba(10,110,112,.16);stroke:var(--teal);stroke-width:1.6}
.rc-chips{display:flex;flex-direction:column;align-items:flex-start;gap:7px;font-size:11px;color:var(--graphite)}
.rc-chips b{font-size:9px;letter-spacing:.16em;color:var(--teal);margin-top:4px}
.rc-chips span{border:1px solid var(--line);padding:3px 9px;background:var(--white)}
.rc-phases{list-style:none;padding:0;margin:6px 0 0;display:flex;flex-direction:column;gap:12px}
.rc-phases li{display:grid;grid-template-columns:88px 1fr;gap:14px;align-items:baseline;
  border-left:2px solid var(--teal);padding:0 0 0 14px;font-size:11.5px;color:var(--graphite)}
.rc-phases b{font-size:12px;color:var(--ink)}

/* ============================================================
   2 · 仪器读数条
   ============================================================ */
.theater{position:relative;color:var(--night-ink);background:var(--night);overflow:hidden}
.theater::before{content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(90deg,rgba(70,183,176,.055) 1px,transparent 1px),
                   linear-gradient(0deg,rgba(70,183,176,.055) 1px,transparent 1px);
  background-size:26px 26px}
.theater>*{position:relative;z-index:1}
.theater.intro{border-top:1px solid var(--nline);border-bottom:1px solid var(--nline);background:var(--night2)}
.numrow{display:grid;grid-template-columns:repeat(5,1fr);padding:34px 0}
.nr{display:flex;flex-direction:column;gap:2px;padding:0 22px;border-left:1px solid var(--nline);position:relative}
.nr:first-child{border-left:0;padding-left:0}
.nr::after{content:"";position:absolute;left:0;top:-10px;width:1px;height:6px;background:var(--teal-lt)}
.nr b{font-size:clamp(34px,3.6vw,52px);font-weight:800;line-height:1.1;color:var(--teal-lt);letter-spacing:-.04em}
.nr span{font-size:13px;color:var(--night-ink);font-weight:600}
.nr i{font-style:normal;font-size:10.5px;color:var(--night-dim);letter-spacing:.04em}

/* ============================================================
   3 · 纸面章节
   ============================================================ */
.paper,.paper2{position:relative}
.sec{position:relative;padding:82px 0;border-bottom:1px solid var(--line-soft);counter-increment:sec}
.sec::before{content:"§ " counter(sec,decimal-leading-zero);position:absolute;right:var(--pad);top:26px;
  font:800 10px var(--num);letter-spacing:.22em;color:var(--teal)}
.shead{display:grid;grid-template-columns:1fr 340px;gap:44px;align-items:end;
  border-top:2px solid var(--ink);padding-top:22px;margin-bottom:40px}
.shead::before{content:"";position:absolute;left:var(--pad);top:-5px;width:9px;height:9px;background:var(--vermilion)}
.shead h2{font-size:clamp(30px,3.3vw,46px);line-height:1.32;color:var(--ink)}
.shead .lead{border-left:2px solid var(--teal);padding-left:16px}
.grid2,.grid3,.grid4,.method-grid,.steps,.mods,.bento{display:grid;gap:1px}
.grid3{grid-template-columns:repeat(3,1fr)}
.grid4{grid-template-columns:repeat(4,1fr)}
.grid2,.method-grid{grid-template-columns:repeat(2,1fr)}
.steps{grid-template-columns:repeat(3,1fr)}

.pcard,.step,.mod,.quote,.dim,.calc-note,.mods-note,.plist{
  background:rgba(252,250,245,.72);border:1px solid var(--line);padding:26px;position:relative}
.pcard::before,.step::before,.quote::before{content:"";position:absolute;left:-1px;top:-1px;width:36px;height:2px;background:var(--teal);transition:width .35s var(--ease)}
.pcard:hover::before,.step:hover::before,.quote:hover::before{width:100%}
.pcard h3,.step h3,.mod h3{font-size:20px;margin-bottom:10px}
.pcard p,.step p,.mod p{font-size:13px;line-height:1.9;color:var(--graphite);margin:0}
.pcard-no,.step-no,.mod-no{font-family:var(--num);font-size:10px;font-weight:700;letter-spacing:.18em;color:var(--teal);margin-bottom:14px}
.calc-note{background:rgba(10,110,112,.055);border-left:3px solid var(--teal);margin-top:1px}
.calc-note b{font-size:17px;display:block;margin-bottom:14px}
.calc-list{display:grid;grid-template-columns:repeat(2,1fr);gap:10px 30px;font-size:12.5px;color:var(--graphite)}
.calc-list div{padding-left:16px;position:relative;border-top:1px dashed var(--line);padding-top:8px}
.calc-list div::before{content:"▸";position:absolute;left:0;color:var(--teal);font-size:10px}
.mods-note{background:rgba(10,110,112,.055);border-left:3px solid var(--teal);margin-top:1px}
.mods-note p{margin:0;font-size:13px;color:var(--graphite);line-height:1.95}
.mods-note b{font-size:16px}

/* ============================================================
   4 · 深色实验室：63 维体系 + 自动诊断
   ============================================================ */
.theater#dims{padding:86px 0 92px;border-top:1px solid var(--nline)}
.t-head{display:grid;grid-template-columns:1fr 340px;gap:44px;align-items:end;
  border-top:1px solid var(--nline);padding-top:22px;margin-bottom:38px}
.t-head::before{content:"";position:absolute;left:var(--pad);top:-4px;width:9px;height:9px;background:var(--vermilion-lt)}
.t-head h2{font-size:clamp(30px,3.3vw,46px);color:var(--night-ink)}
.t-head .lead{color:var(--night-muted);border-left:2px solid var(--teal-lt);padding-left:16px}
.bento{grid-template-columns:repeat(2,1fr);background:var(--nline);border:1px solid var(--nline)}
.bcard{background:var(--night2);padding:26px;border-top:2px solid rgba(70,183,176,.45);min-width:0}
.bcard-head{display:flex;justify-content:space-between;align-items:baseline;gap:12px;
  border-bottom:1px solid var(--nline);padding-bottom:12px;margin-bottom:18px}
.bcard-head h3{font-size:19px;color:var(--night-ink)}
.tag{font-size:9px;font-weight:700;letter-spacing:.2em;color:var(--teal-lt);white-space:nowrap}
.fig{width:100%;height:220px;position:relative}
.fig svg{width:100%;height:100%;overflow:visible}
.gl polygon,.gl line{fill:none;stroke:rgba(169,188,199,.24);stroke-width:1}
.gl-line{stroke:rgba(169,188,199,.20);stroke-width:1}
.lbl text,.lbl{fill:var(--night-muted);font-family:var(--num);font-size:10.5px;letter-spacing:.06em}
.radar-avg{fill:none;stroke:var(--night-muted);stroke-width:1.3;stroke-dasharray:4 4}
.radar-now{fill:rgba(70,183,176,.24);stroke:var(--teal-lt);stroke-width:2.4;stroke-linejoin:round}
.t-area{fill:rgba(70,183,176,.11)}
.t-line{fill:none;stroke:var(--teal-lt);stroke-width:2.4;stroke-linejoin:round;stroke-linecap:round}
.t-dot{fill:var(--teal-lt)}
.t-big{fill:var(--vermilion-lt);font-family:var(--num);font-weight:800;font-size:16px}
.cap{margin:12px 0 0;font-size:11px;color:var(--night-muted);line-height:1.7}
.cap::before{content:"FIG.  ";font-family:var(--num);font-weight:700;letter-spacing:.16em;color:var(--teal-lt)}
.donut-fig{display:grid;place-items:center;height:190px;position:relative}
.donut-fig svg{width:190px;height:190px}
.donut-bg{fill:none;stroke:rgba(169,188,199,.13);stroke-width:20}
.donut-a,.donut-b,.donut-c,.donut-d{fill:none;stroke-width:20}
.donut-a{stroke:var(--teal-lt)} .donut-b{stroke:#7FB8B4}
.donut-c{stroke:#C9B27B} .donut-d{stroke:var(--vermilion-lt)}
.donut-center{position:absolute;text-align:center;display:flex;flex-direction:column}
.donut-center b{font-size:40px;font-weight:800;color:var(--night-ink);line-height:1}
.donut-center span{font-size:10px;color:var(--night-dim);margin-top:6px}
.legend{list-style:none;display:grid;grid-template-columns:repeat(2,1fr);gap:6px 14px;padding:0;margin:16px 0 0;
  font-size:11px;color:var(--night-muted)}
.legend li{display:flex;align-items:center;gap:8px}
.legend i{width:9px;height:9px;flex:none}
.l-a{background:var(--teal-lt)} .l-b{background:#7FB8B4} .l-c{background:#C9B27B} .l-d{background:var(--vermilion-lt)}
.dims{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--nline);border:1px solid var(--nline)}
.dim{background:var(--night2);border:0;padding:16px}
.dim b{display:block;font-size:15px;color:var(--night-ink)}
.dim span{display:block;font:700 9px var(--num);letter-spacing:.14em;color:var(--teal-lt);margin:4px 0 8px}
.dim p{font-size:11px;line-height:1.8;color:var(--night-muted);margin:0}
.general{margin-top:14px;border-left:2px solid var(--teal-lt);padding:6px 0 6px 14px}
.general b{display:block;font-size:15px;color:var(--night-ink)}
.general p{margin:2px 0 0;font-size:11.5px;color:var(--night-muted)}

.diagnose{margin-top:1px;background:var(--night2);border:1px solid var(--nline);border-top:2px solid var(--teal-lt);padding:30px}
.d-head{display:grid;grid-template-columns:1fr 340px;gap:44px;align-items:end;margin-bottom:28px}
.d-head h3{font-size:25px;color:var(--night-ink)}
.d-head p{font-size:12.5px;color:var(--night-muted);margin:0;border-left:2px solid var(--nline2);padding-left:16px}
.d-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px}
.d-row{display:grid;grid-template-columns:76px 1fr;gap:16px;align-items:center;
  border-top:1px solid var(--nline);padding:10px 0}
.d-name{font-size:16px;color:var(--night-ink)}
.d-levels{position:relative;display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--nline);background:rgba(11,29,43,.6)}
.d-levels button{position:relative;z-index:1;border:0;background:transparent;color:var(--night-dim);
  padding:9px 2px;font:600 11px var(--sans);cursor:pointer;transition:color .25s}
.d-levels button.on{color:var(--night)}
.d-levels button:hover{color:var(--teal-lt)}
.seg-indicator{position:absolute;top:3px;bottom:3px;left:0;width:0;background:var(--teal-lt);
  transition:left .35s var(--ease),width .35s var(--ease);z-index:0}
.d-hint{font-size:10.5px;color:var(--night-dim);margin:14px 0 0}
.d-result{display:grid;grid-template-columns:150px 1fr;gap:24px;align-items:center;
  border-left:1px solid var(--nline);padding-left:30px}
.d-score{display:flex;flex-direction:column;align-items:flex-start}
.d-score b{font-size:78px;font-weight:800;line-height:1;color:var(--teal-lt);letter-spacing:-.06em}
.d-score span{font-family:var(--serif);font-size:17px;color:var(--night-ink);margin-top:4px}
.d-line{display:grid;grid-template-columns:76px 1fr;gap:12px;padding:8px 0;border-bottom:1px solid var(--nline);font-size:12px;color:var(--night-muted)}
.d-line b{color:var(--teal-lt);font-size:13px}
.d-advice span{line-height:1.8}

/* ============================================================
   5 · 纸面后半段
   ============================================================ */
.mods{grid-template-columns:repeat(4,1fr);background:var(--line);border:1px solid var(--line)}
.mod{background:rgba(252,250,245,.8);border:0;display:flex;gap:16px;align-items:flex-start;padding:20px}
.mod-no{font-size:11px;font-weight:800;color:var(--teal);letter-spacing:.06em;flex:none;min-width:34px;
  border-right:1px solid var(--line);padding-right:12px}
.mod h3{font-size:15px;margin-bottom:4px}
.mod p{font-size:11.5px}
.reads{list-style:none;padding:0;margin:0}
.reads li{display:grid;grid-template-columns:92px 1fr;gap:24px;padding:22px 0;border-top:1px solid var(--line)}
.reads li>span{font:800 34px var(--num);color:var(--teal);opacity:.35;line-height:1}
.reads h3{font-size:19px;margin-bottom:6px}
.reads p{font-size:13px;color:var(--graphite);margin:0;line-height:1.9}
.split{display:grid;grid-template-columns:40% 1fr;gap:56px;align-items:center}
.split-l h2{font-size:clamp(30px,3.3vw,44px);line-height:1.35;margin-bottom:18px}
.split-l .lead{max-width:420px;margin-bottom:8px}
.mini-report{background:var(--white);border:1px solid var(--line);padding:28px 30px 22px;
  box-shadow:6px 6px 0 var(--paper3);position:relative}
.mini-report::before{content:"EXHIBIT A";position:absolute;right:26px;top:12px;
  font:700 8px var(--num);letter-spacing:.2em;color:var(--teal)}
.mr-top{display:flex;align-items:center;gap:9px;font-size:11px;color:var(--graphite);
  border-bottom:1px solid var(--line);padding-bottom:12px}
.mr-top i{font-style:normal;margin-left:auto;font:700 8px var(--num);letter-spacing:.16em;
  border:1px solid var(--teal);color:var(--teal);padding:2px 7px}
.mini-report h3{font-size:22px;margin:18px 0 6px}
.mini-report .rc-meta{font-size:10.5px}
.mr-kpis{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:22px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:16px 0}
.mr-kpis div{display:flex;flex-direction:column;border-left:1px solid var(--line);padding-left:12px}
.mr-kpis div:first-child{border-left:0;padding-left:0}
.mr-kpis b{font-size:26px;font-weight:800;color:var(--ink)}
.mr-kpis span{font-size:10px;color:var(--graphite)}
.mr-text p{font-size:12px;color:var(--graphite);margin:5px 0;line-height:1.85}
.mr-text b{color:var(--ink)}
.mr-foot{margin-top:16px;padding-top:12px;border-top:1px dashed var(--line);
  font:700 9px var(--num);letter-spacing:.16em;color:var(--teal)}
.quote{padding:26px 24px}
.quote .kicker{color:var(--teal);font-size:9px;margin-bottom:10px}
.quote .kicker::before{display:none}
.quote>b{display:block;font-size:18px;margin-bottom:12px}
.quote p:last-child{font-size:12.5px;line-height:1.95;color:var(--graphite);margin:0}
.tbl-wrap{overflow-x:auto;border:1px solid var(--line);background:var(--white)}
.tbl{width:100%;border-collapse:collapse;font-size:13px;min-width:560px}
.tbl th{background:var(--ink);color:var(--paper);font:700 11px var(--num);letter-spacing:.12em;
  text-align:left;padding:14px 18px}
.tbl td{padding:15px 18px;border-top:1px solid var(--line-soft);color:var(--graphite)}
.tbl tbody tr:nth-child(odd){background:rgba(18,41,58,.025)}
.tbl td:first-child{font-weight:600;color:var(--ink);white-space:nowrap}
.tbl strong{color:var(--teal);font-weight:700}
.plist b{display:block;font-size:18px;margin-bottom:14px;padding-bottom:12px;border-bottom:1px solid var(--line)}
.plist ul{list-style:none;padding:0;margin:0}
.plist li{font-size:13px;color:var(--graphite);padding:9px 0 9px 22px;border-bottom:1px dashed var(--line);position:relative}
.plist li::before{content:"✓";position:absolute;left:0;color:var(--teal);font:700 12px var(--num)}
.privacy{align-items:start}
.faq{border-top:1px solid var(--ink)}
.faq details{border-bottom:1px solid var(--line);padding:0}
.faq summary{list-style:none;cursor:pointer;padding:18px 44px 18px 4px;font-family:var(--serif);font-size:17px;
  position:relative;transition:color .25s}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--teal)}
.faq summary::after{content:"+";position:absolute;right:6px;top:50%;transform:translateY(-50%);
  font:400 22px var(--num);color:var(--teal)}
.faq details[open] summary::after{content:"−"}
.faq details p{margin:0;padding:0 40px 20px 4px;font-size:13px;color:var(--graphite);line-height:1.9}

/* ============================================================
   6 · 结尾 + 页脚
   ============================================================ */
.cta-band{position:relative;background:var(--night);color:var(--night-ink);overflow:hidden;
  border-top:1px solid var(--nline);padding:72px 0}
.cta-band::before{content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(90deg,rgba(70,183,176,.06) 1px,transparent 1px),
                   linear-gradient(0deg,rgba(70,183,176,.06) 1px,transparent 1px);
  background-size:26px 26px}
.cta-inner{display:grid;grid-template-columns:1fr auto;gap:40px;align-items:center;z-index:1}
.cta-band h2{font-size:clamp(30px,3.6vw,50px);margin-bottom:12px}
.cta-band p{font-size:13.5px;color:var(--night-muted);margin:0;max-width:520px;line-height:1.9}
.cta-btns{display:flex;flex-wrap:wrap;gap:12px}
.cta-band .btn-cream{background:var(--paper);color:var(--ink);border-color:var(--paper);box-shadow:0 3px 0 var(--teal)}
.cta-band .ghost-cream{color:var(--paper);border-color:var(--nline2)}
.cta-band .ghost-cream:hover{color:var(--teal-lt);border-color:var(--teal-lt)}
.foot{background:var(--paper2);border-top:1px solid var(--line);padding:30px 0;font-size:11.5px;color:var(--graphite)}
.foot-inner{display:flex;flex-wrap:wrap;align-items:center;gap:18px}
.foot-brand{display:flex;align-items:center;gap:9px;color:var(--ink)}
.foot-brand span{font-family:var(--serif);font-size:14px;font-weight:700;letter-spacing:.08em}
.foot-brand small{display:block;font:700 7.5px var(--num);letter-spacing:.22em;color:var(--teal)}
.foot-note{margin:0;flex:1;min-width:220px}
.foot-links{display:flex;gap:10px;align-items:center;white-space:nowrap}
.foot-links a{text-decoration:none;border-bottom:1px solid var(--line)}

/* ============================================================
   7 · 入场动效 / 无障碍降级
   ============================================================ */
.js .rv{opacity:0;transform:translateY(14px);
  transition:opacity .7s var(--ease),transform .7s var(--ease)}
.js .rv.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;
    transition-duration:.01ms!important}
  .js .rv{opacity:1;transform:none}
  .report-card{transform:none!important}
}

/* ============================================================
   8 · 响应式
   ============================================================ */
@media (max-width:1200px){
  .ruler{display:none}
  .comain{grid-template-columns:56% 44%;gap:0 18px}
  .chead h1{font-size:clamp(44px,5.6vw,72px)}
  .atlas{padding-left:18px}
  .shead,.t-head,.d-head{grid-template-columns:1fr 290px;gap:28px}
  .mods{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:960px){
  .cover::before,.cover::after{display:none}
  .covtop{flex-wrap:wrap;gap:10px}
  .covtop-sp{display:none}
  .covnav{order:3;width:100%;overflow-x:auto;gap:20px;padding-bottom:4px;-webkit-overflow-scrolling:touch}
  .comain{grid-template-columns:1fr;grid-template-rows:auto;grid-template-areas:"head" "atlas" "lines";
    padding-top:34px;padding-bottom:30px;min-height:0;gap:0}
  .chead{padding:0 0 26px}
  .chead h1{font-size:clamp(42px,8.6vw,68px)}
  .atlas{background:var(--night);border:1px solid var(--nline);padding:16px 18px;margin-bottom:26px}
  .atlas svg{max-height:340px}
  .clines{grid-template-columns:repeat(3,1fr);gap:14px}
  .report-card{grid-template-columns:1fr}
  .rc-intro{border-right:0;border-bottom:1px solid var(--line)}
  .numrow{grid-template-columns:repeat(2,1fr);gap:22px 0;padding:26px 0}
  .nr:nth-child(odd){border-left:0;padding-left:0}
  .nr:last-child{grid-column:1/-1;border-left:0;padding-left:0;border-top:1px solid var(--nline);padding-top:18px}
  .shead,.t-head,.d-head,.split,.d-grid,.cta-inner{grid-template-columns:1fr;gap:20px}
  .shead .lead,.t-head .lead,.d-head p{padding-left:14px}
  .grid2,.grid3,.grid4,.method-grid,.steps,.bento,.mods{grid-template-columns:repeat(2,1fr)}
  .calc-list{grid-template-columns:1fr}
  .dims{grid-template-columns:repeat(2,1fr)}
  .d-result{border-left:0;border-top:1px solid var(--nline);padding:24px 0 0}
  .sec{padding:62px 0}
  .theater#dims{padding:62px 0}
  .split{gap:30px}
  .cta-band{padding:56px 0}
}
@media (max-width:640px){
  body{font-size:14px}
  .grid2,.grid3,.grid4,.method-grid,.steps,.bento,.mods,.dims{grid-template-columns:1fr}
  .clines{grid-template-columns:1fr;gap:10px}
  .cl{border-top:1px dashed var(--line);padding-top:8px}
  .cl b{font-size:15px}
  .chead h1{font-size:clamp(38px,10.5vw,56px)}
  .dek{font-size:13px;padding-left:12px}
  .cta{flex-direction:column;align-items:stretch}
  .cta a{width:100%}
  .rc-intro,.rc-stage{padding:20px}
  .rc-two{grid-template-columns:1fr;justify-items:center;text-align:center}
  .rc-chips{align-items:center}
  .rc-kpis b{font-size:27px}
  .rc-phases li{grid-template-columns:1fr;gap:2px}
  .reads li{grid-template-columns:52px 1fr;gap:12px}
  .reads li>span{font-size:25px}
  .d-row{grid-template-columns:56px 1fr;gap:8px}
  .d-levels button{font-size:10px}
  .d-result{grid-template-columns:110px 1fr;gap:14px;padding-left:0}
  .d-score b{font-size:58px}
  .d-line{grid-template-columns:64px 1fr}
  .diag{overflow:hidden}
  .diagnose{padding:20px}
  .foot-inner{flex-direction:column;align-items:flex-start;gap:12px}
  .sec::before{top:16px}
}

/* ============================================================
   9 · 打印
   ============================================================ */
@media print{
  :root{--paper:#fff;--ink:#111;--graphite:#333}
  .landing{background:#fff}
  .ruler,.atlas,.covnav,.cta,.cta-band,.rc-ctrl,.rc-dots,.rc-more,.diagnose,.skip{display:none!important}
  .cover::before,.cover::after,.theater::before,.cta-band::before{display:none!important}
  .theater,.theater.intro,.theater#dims{background:#fff;color:#111}
  .bcard,.diagnose{background:#fff;color:#111;border-color:#bbb}
  .bcard-head h3,.t-head h2,.nr b,.nr span,.cap,.lbl text,.d-score b{color:#111}
  .numrow{border-top:1px solid #bbb;border-bottom:1px solid #bbb}
  .nr b{color:#111}
  .js .rv{opacity:1!important;transform:none!important}
  .report-card{transform:none!important;box-shadow:none}
  .sec{break-inside:avoid;padding:26px 0}
  a{text-decoration:none}
}