/* ════════════════════════════════════════════════════════════
   academy.thefluxone.com  |  Shared Design System
   风格：书报印刷·纸墨质感·editorial ink-on-paper
   完全匹配原始 index.html 设计语言
   ════════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@400;600;700;900&family=Playfair+Display:ital,wght@0,700;0,900;1,700&family=Space+Mono:wght@400;700&display=swap');

/* ── DESIGN TOKENS ───────────────────────────────────────── */
:root {
  /* 主色：纸张与墨水 */
  --paper:     #f7f3ec;
  --paper2:    #f0ebe0;
  --paper3:    #e8e2d4;
  --ink:       #0d0d0d;
  --ink2:      #2a2520;
  --muted:     #8a8070;
  --muted2:    #6a6058;

  /* 品牌色 */
  --red:       #c0392b;
  --red2:      #a02d20;
  --red-soft:  rgba(192,57,43,0.09);
  --gold:      #c9962a;
  --gold2:     #a87820;
  --gold-soft: rgba(201,150,42,0.10);
  --blue:      #1a3a5c;
  --blue-soft: rgba(26,58,92,0.09);
  --green:     #2a6a3a;
  --green-soft:rgba(42,106,58,0.09);

  /* 标签色——浅色背景版（深色文字）*/
  --tag-noun:  #1a3a5c;
  --tag-part:  #7a5200;
  --tag-sent:  #8b1a10;
  --tag-nest:  #1a5a2a;
  /* 标签色——深色背景版（亮色文字）*/
  --tag-noun-b:#7ab3f0;
  --tag-part-b:#f0c84a;
  --tag-sent-b:#f08080;
  --tag-nest-b:#7ae090;

    /* 向下兼容别名（HTML文件无需修改，自动适配浅色主题）*/
  --bg:       var(--paper);
  --surface:  var(--paper2);
  --surface2: var(--paper3);
  --surface3: var(--paper3);
  --text:     var(--ink);
  --text2:    var(--ink2);

  /* 边框 */
  --border:    rgba(13,13,13,0.07);
  --border2:   rgba(13,13,13,0.13);
  --border3:   rgba(13,13,13,0.22);

  /* 布局 */
  --nav-h:     82px;
  --max-w:     1120px;
  --max-w-sm:  820px;

  /* 字体 */
  --serif:  'Noto Serif SC','PingFang SC','Microsoft YaHei',serif;
  --display:'Playfair Display',Georgia,serif;
  --mono:   'Space Mono','Courier New',monospace;
}

/* ── RESET ───────────────────────────────────────────────── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px;-webkit-text-size-adjust:100%}
body{
  background:var(--paper);
  color:var(--ink);
  font-family:var(--serif);
  min-height:100vh;
  overflow-x:hidden;
  line-height:1.65;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:var(--serif);cursor:pointer;border:none;background:none}
input,textarea,select{font-family:var(--serif)}
ul,ol{list-style:none}

/* ── PAGE WRAPPER ────────────────────────────────────────── */
.page{position:relative;z-index:1;padding-top:var(--nav-h);min-height:100vh}

/* ── CONTAINER ───────────────────────────────────────────── */
.container    {max-width:var(--max-w);   margin:0 auto;padding:0 48px}
.container-sm {max-width:var(--max-w-sm);margin:0 auto;padding:0 48px}

/* ════════════════════════════════════════════════════════════
   NAV — 半透明奶油纸张，深色文字（原始风格）
   ════════════════════════════════════════════════════════════ */
.site-nav{
  position:fixed;top:0;left:0;right:0;z-index:200;
  height:var(--nav-h);
  background:rgba(247,243,236,0.96);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(13,13,13,0.08);
  display:flex;align-items:center;
  padding:0 48px;
}
.nav-logo{
  display:flex;align-items:center;gap:8px;
  font-family:var(--display);font-size:1.7rem;font-weight:900;
  flex-shrink:0;margin-right:28px;white-space:nowrap;color:var(--ink);
}
.nav-logo-img {
  height: 28px;
  width: auto;
  object-fit: contain;
  flex-shrink: 0;
  border-radius: 4px;
  opacity: .92;
  transition: opacity .18s;
}
.nav-logo:hover .nav-logo-img { opacity: 1; }

.nav-logo .r {color:var(--red)}
.nav-logo .nb{
  font-family:var(--mono);font-size:.52rem;letter-spacing:.14em;
  text-transform:uppercase;padding:2px 7px;
  background:rgba(13,13,13,0.06);border:1px solid rgba(13,13,13,0.12);
  color:var(--muted);
}
.nav-menu{display:flex;align-items:center;flex:1}
.nav-item{position:relative}
.nav-link{
  display:flex;align-items:center;gap:4px;
  padding:0 13px;height:var(--nav-h);
  font-family:var(--mono);font-size:1.0rem;letter-spacing:.06em;
  text-transform:uppercase;color:var(--muted);
  transition:color .18s;border-bottom:2px solid transparent;white-space:nowrap;
}
.nav-link:hover{color:var(--ink)}
.nav-link.active{color:var(--ink);border-bottom-color:var(--red)}
.nav-link .nav-arr{font-size:.48rem;opacity:.5;transition:transform .18s}
.nav-item:hover .nav-arr{transform:rotate(180deg)}
.nav-drop{
  position:absolute;top:100%;left:0;
  background:var(--paper);border:1px solid rgba(13,13,13,0.10);
  box-shadow:4px 4px 0 rgba(13,13,13,0.05);
  min-width:152px;z-index:300;
  opacity:0;visibility:hidden;transform:translateY(-6px);transition:all .18s;
}
.nav-item:hover .nav-drop{opacity:1;visibility:visible;transform:translateY(0)}
.nav-drop a{
  display:block;padding:10px 16px;
  font-family:var(--mono);font-size:.6rem;letter-spacing:.08em;
  text-transform:uppercase;color:var(--muted);
  transition:all .14s;border-left:2px solid transparent;
}
.nav-drop a:hover{color:var(--ink);background:var(--paper2);border-left-color:var(--red)}
.nav-right{display:flex;align-items:center;gap:10px;margin-left:auto;flex-shrink:0}
.nav-user{
  display:flex;align-items:center;gap:7px;
  font-family:var(--mono);font-size:.9rem;letter-spacing:.06em;color:var(--muted);
}
.nav-udot{width:6px;height:6px;border-radius:50%;background:var(--green)}
.btn-nav{
  padding:7px 16px;
  font-family:var(--mono);font-size:.9rem;letter-spacing:.08em;text-transform:uppercase;
  border:1px solid rgba(13,13,13,0.18);color:var(--ink);background:none;transition:all .18s;
}
.btn-nav:hover {background:var(--ink);color:var(--paper)}
.btn-nav-p     {background:var(--ink);color:var(--paper);border-color:var(--ink)}
.btn-nav-p:hover{background:var(--red);border-color:var(--red)}

/* ── TRIAL BANNER ────────────────────────────────────────── */
.trial-banner{
  background:rgba(255,243,176,0.55);
  border-bottom:1px solid rgba(201,150,42,0.22);
  padding:9px 48px;text-align:center;
  font-family:var(--mono);font-size:.62rem;letter-spacing:.09em;
  color:var(--ink);display:flex;align-items:center;justify-content:center;gap:16px;
}
.trial-banner a{color:var(--red);text-decoration:underline}
.trial-banner .tb-close{color:var(--muted);font-size:.85rem;cursor:pointer;transition:color .15s}
.trial-banner .tb-close:hover{color:var(--ink)}
.trial-banner.gone{display:none}

/* ════════════════════════════════════════════════════════════
   SECTIONS & TYPOGRAPHY
   ════════════════════════════════════════════════════════════ */
.section   {padding:80px 0}
.section-sm{padding:48px 0}
.section-lg{padding:120px 0}

/* 大号装饰数字（参考原始 .section-number）*/
.section-number{
  font-family:var(--mono);font-size:5rem;font-weight:700;
  color:rgba(13,13,13,0.06);line-height:1;margin-top:-8px;
}
/* Section eyebrow */
.sec-eyebrow{
  font-family:var(--mono);font-size:.6rem;letter-spacing:.2em;
  text-transform:uppercase;color:var(--muted);
  margin-bottom:10px;display:flex;align-items:center;gap:10px;
}
.sec-eyebrow::before{content:'';display:block;width:20px;height:1px;background:var(--muted)}
/* Section title */
.sec-title{
  font-family:var(--serif);font-size:clamp(1.6rem,3vw,2.5rem);
  font-weight:900;line-height:1.2;margin-bottom:48px;color:var(--ink);
}
.sec-title .r{color:var(--red)}
.sec-title .g{color:var(--gold)}
/* Divider */
.divline{
  display:flex;align-items:center;gap:12px;margin:24px 0;
  font-family:var(--mono);font-size:.58rem;letter-spacing:.17em;
  text-transform:uppercase;color:var(--muted);
}
.divline::before,.divline::after{content:'';flex:1;height:1px;background:rgba(13,13,13,0.10)}

/* ════════════════════════════════════════════════════════════
   BUTTONS — 原始墨水黑主色风格
   ════════════════════════════════════════════════════════════ */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:13px 28px;font-family:var(--serif);
  font-size:.9rem;letter-spacing:.06em;transition:all .18s;
}
/* Primary: 墨水黑→hover红色 */
.btn-p      {background:var(--ink);color:var(--paper);border:2px solid var(--ink)}
.btn-p:hover{background:var(--red);border-color:var(--red);color:var(--paper)}
/* Secondary: 透明+墨水边框→hover填充 */
.btn-s      {background:transparent;border:2px solid var(--ink);color:var(--ink)}
.btn-s:hover{background:var(--ink);color:var(--paper)}
/* Gold */
.btn-g      {background:var(--gold);color:var(--paper);border:2px solid var(--gold);font-weight:700}
.btn-g:hover{background:var(--gold2);border-color:var(--gold2)}
/* Ghost（深色背景上使用）*/
.btn-ghost  {background:transparent;border:2px solid rgba(247,243,236,0.4);color:var(--paper)}
.btn-ghost:hover{border-color:var(--paper)}
/* White（红色CTA上使用）*/
.btn-white  {background:var(--paper);color:var(--ink);border:2px solid var(--paper);font-weight:700}
.btn-white:hover{background:transparent;color:var(--paper)}

.btn-sm {padding:8px 20px;font-size:.8rem}
.btn-lg {padding:15px 40px;font-size:.98rem}
.btn:disabled{opacity:.4;cursor:not-allowed;pointer-events:none}
.btn .sp{
  width:13px;height:13px;border-radius:50%;
  border:2px solid rgba(0,0,0,0.15);border-top-color:currentColor;
  animation:spin .75s linear infinite;display:none;flex-shrink:0;
}
.btn.loading .sp{display:block}
.btn.loading .bt{opacity:.65}
@keyframes spin{to{transform:rotate(360deg)}}

/* ════════════════════════════════════════════════════════════
   CARDS — 纸张底色 + 深色细边框 + 深色2px缝格栅
   ════════════════════════════════════════════════════════════ */
.card{
  background:var(--paper);border:1px solid rgba(13,13,13,0.08);
  padding:28px;transition:border-color .18s;
}
.card:hover{border-color:rgba(13,13,13,0.15)}
.card-r{border-top:2px solid var(--red)}
.card-g{border-top:2px solid var(--gold)}
.card-eyebrow{font-family:var(--mono);font-size:.59rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-bottom:10px}

/* Grid：深色2px缝隙营造原始报纸版面感 */
.g2{display:grid;grid-template-columns:1fr 1fr;       background:rgba(13,13,13,0.08);gap:2px}
.g3{display:grid;grid-template-columns:repeat(3,1fr); background:rgba(13,13,13,0.08);gap:2px}
.g4{display:grid;grid-template-columns:repeat(4,1fr); background:rgba(13,13,13,0.08);gap:2px}
.g2>*,.g3>*,.g4>*{background:var(--paper)}
.ggap{background:transparent;gap:20px}
.ggap>*{background:transparent}

/* ════════════════════════════════════════════════════════════
   FORMS — 纸张底色输入框
   ════════════════════════════════════════════════════════════ */
.fg  {margin-bottom:18px}
.fl  {display:block;font-family:var(--mono);font-size:.59rem;letter-spacing:.15em;text-transform:uppercase;color:var(--muted);margin-bottom:7px}
.fi,.ft,.fsel{
  width:100%;padding:12px 15px;
  background:var(--paper);border:1px solid rgba(13,13,13,0.15);
  color:var(--ink);font-family:var(--serif);font-size:.94rem;
  outline:none;transition:border-color .18s;
}
.fi:focus,.ft:focus,.fsel:focus{border-color:var(--red)}
.fi::placeholder,.ft::placeholder{color:var(--muted)}
.ft  {min-height:96px;resize:vertical;line-height:1.7}
.fsel{cursor:pointer}
.ferr{font-family:var(--mono);font-size:.61rem;color:var(--red);margin-top:5px;letter-spacing:.04em;display:none}
.ferr.on{display:block}
.fhint{font-size:.77rem;color:var(--muted);margin-top:5px}

/* ════════════════════════════════════════════════════════════
   MODALS — 纸张背景弹窗（原始tooltip风格：左红竖线+box-shadow）
   ════════════════════════════════════════════════════════════ */
.modal-ov{
  position:fixed;inset:0;z-index:500;
  background:rgba(13,13,13,0.55);backdrop-filter:blur(4px);
  display:none;align-items:center;justify-content:center;padding:20px;
}
.modal-ov.on{display:flex}
.modal{
  background:var(--paper);border:1px solid rgba(13,13,13,0.12);
  box-shadow:6px 6px 0 rgba(13,13,13,0.07);
  padding:40px;width:100%;max-width:500px;position:relative;
}
.modal::before{content:'';position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--red),var(--gold))}
.modal-x{position:absolute;top:14px;right:16px;color:var(--muted);font-size:1.15rem;line-height:1;cursor:pointer;transition:color .15s}
.modal-x:hover{color:var(--ink)}
.modal-title{font-family:var(--display);font-size:1.4rem;font-weight:700;margin-bottom:8px;color:var(--ink)}
.modal-sub  {font-size:.84rem;color:var(--muted);line-height:1.75;margin-bottom:26px}

/* ════════════════════════════════════════════════════════════
   BADGES
   ════════════════════════════════════════════════════════════ */
.badge{display:inline-block;padding:2px 8px;font-family:var(--mono);font-size:.55rem;letter-spacing:.1em;text-transform:uppercase;border-radius:2px}
.badge-r {background:rgba(192,57,43,0.08); border:1px solid rgba(192,57,43,0.22);color:var(--red)}
.badge-g {background:rgba(201,150,42,0.08);border:1px solid rgba(201,150,42,0.22);color:var(--gold2)}
.badge-b {background:rgba(26,58,92,0.08);  border:1px solid rgba(26,58,92,0.22);  color:var(--blue)}
.badge-gr{background:rgba(42,106,58,0.08); border:1px solid rgba(42,106,58,0.22); color:var(--green)}

/* ════════════════════════════════════════════════════════════
   TAG DISPLAY — Label Thinking 彩色标签

   默认：浅色背景（奶油纸张）上的深色墨水标签
   .dark-surface 内：自动切换为亮色标签（深色句子框）
   ════════════════════════════════════════════════════════════ */
.t-trunk{color:var(--ink)}
.t-noun,.t-part,.t-sent,.t-nest{
  display:inline;padding:1px 7px;border-radius:2px;
  cursor:pointer;font-family:var(--mono);font-size:.82em;transition:filter .18s;
}
/* 浅色背景标签（深蓝/深棕/深红/深绿，高对比可读）*/
.t-noun{background:rgba(26,58,92,0.10); border:1px solid rgba(26,58,92,0.35); color:var(--tag-noun)}
.t-part{background:rgba(150,100,20,0.10);border:1px solid rgba(150,100,20,0.35);color:var(--tag-part)}
.t-sent{background:rgba(192,57,43,0.10); border:1px solid rgba(192,57,43,0.35); color:var(--tag-sent)}
.t-nest{background:rgba(42,106,58,0.10); border:1px solid rgba(42,106,58,0.35); color:var(--tag-nest)}
.t-noun:hover,.t-part:hover,.t-sent:hover,.t-nest:hover{filter:brightness(0.7)}
/* Lit state */
.lit-noun{outline:2px solid var(--tag-noun);outline-offset:1px}
.lit-part{outline:2px solid var(--tag-part);outline-offset:1px}
.lit-sent{outline:2px solid var(--tag-sent);outline-offset:1px}
.lit-nest{outline:2px solid var(--tag-nest);outline-offset:1px}

/* 深色背景标签（加 .dark-surface 自动切换亮色）*/
.dark-surface{background:var(--ink)!important;color:var(--paper)!important}
.dark-surface .t-trunk{color:rgba(247,243,236,0.75)}
.dark-surface .t-noun {background:rgba(26,58,92,0.55); border-color:#3a6ea8;color:var(--tag-noun-b)}
.dark-surface .t-part {background:rgba(201,150,42,0.18);border-color:#c9962a;color:var(--tag-part-b)}
.dark-surface .t-sent {background:rgba(192,57,43,0.18); border-color:#c0392b;color:var(--tag-sent-b)}
.dark-surface .t-nest {background:rgba(42,106,58,0.22);  border-color:#3a8a4a;color:var(--tag-nest-b)}
.dark-surface .t-noun:hover,.dark-surface .t-part:hover,
.dark-surface .t-sent:hover,.dark-surface .t-nest:hover{filter:brightness(1.25)}

/* Tag legend bar */
.tag-legend{
  display:flex;gap:18px;flex-wrap:wrap;
  padding:10px 16px;background:var(--paper2);
  border:1px solid rgba(13,13,13,0.08);margin-bottom:18px;
}
.tl-item{display:flex;align-items:center;gap:6px;font-family:var(--mono);font-size:.58rem;letter-spacing:.07em;color:var(--muted)}
.tl-swatch{width:20px;height:8px;border-radius:2px}

/* ════════════════════════════════════════════════════════════
   ALERTS & TOASTS
   ════════════════════════════════════════════════════════════ */
.alert{padding:12px 16px;font-size:.84rem;line-height:1.7;border-left:3px solid;margin-bottom:14px}
.alert-ok  {background:rgba(42,106,58,0.07); border-color:var(--green);color:var(--green)}
.alert-err {background:rgba(192,57,43,0.07); border-color:var(--red);  color:var(--red2)}
.alert-info{background:rgba(26,58,92,0.07);  border-color:var(--blue); color:var(--blue)}
.alert-warn{background:rgba(201,150,42,0.07);border-color:var(--gold); color:var(--gold2)}

.toast-wrap{position:fixed;bottom:22px;right:22px;z-index:1000;display:flex;flex-direction:column;gap:9px;pointer-events:none}
.toast{
  padding:12px 18px;background:var(--paper);
  border:1px solid rgba(13,13,13,0.12);border-left:3px solid var(--gold);
  box-shadow:4px 4px 0 rgba(13,13,13,0.06);
  font-size:.82rem;max-width:290px;color:var(--ink);
  animation:toastIn .28s ease;pointer-events:auto;
}
.toast.err{border-left-color:var(--red)}
.toast.ok {border-left-color:var(--green)}
@keyframes toastIn{from{opacity:0;transform:translateX(14px)}to{opacity:1;transform:translateX(0)}}

.sdot     {display:inline-block;width:6px;height:6px;border-radius:50%}
.sdot-on  {background:var(--green)}
.sdot-off {background:var(--muted)}
.sdot-load{background:var(--gold);animation:blink .8s ease infinite}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.3}}

/* ════════════════════════════════════════════════════════════
   ACCESS LOCK
   ════════════════════════════════════════════════════════════ */
.access-lock{text-align:center;padding:80px 20px}
.lock-icon  {font-size:2.8rem;margin-bottom:18px;opacity:.3}
.lock-title {font-family:var(--display);font-size:1.75rem;font-weight:700;margin-bottom:10px;color:var(--ink)}
.lock-sub   {font-size:.88rem;color:var(--muted);line-height:1.85;max-width:380px;margin:0 auto 28px}

/* ════════════════════════════════════════════════════════════
   FOOTER — 深色墨水底（与原始保持一致）
   ════════════════════════════════════════════════════════════ */
.site-footer{background:var(--ink);color:var(--paper);padding:56px 0 22px}
.footer-grid{
  max-width:var(--max-w);margin:0 auto;padding:0 48px;
  display:grid;grid-template-columns:2fr 1fr 1fr 1fr;
  gap:44px;margin-bottom:40px;
}
.fb-name     {font-family:var(--serif);font-size:.95rem;font-weight:900;margin-bottom:5px;color:var(--paper)}
.fb-name span{color:var(--red)}
.fb-sub      {font-family:var(--mono);font-size:.57rem;letter-spacing:.14em;color:rgba(247,243,236,0.4);margin-bottom:10px}
.fb-desc     {font-size:.79rem;color:rgba(247,243,236,0.5);line-height:1.85}
.fc-title    {font-family:var(--mono);font-size:.57rem;letter-spacing:.19em;text-transform:uppercase;color:rgba(247,243,236,0.35);margin-bottom:13px}
.fc-list li  {margin-bottom:7px}
.fc-list a   {font-size:.79rem;color:rgba(247,243,236,0.45);transition:color .16s}
.fc-list a:hover{color:var(--paper)}
.footer-btm  {
  max-width:var(--max-w);margin:0 auto;padding:18px 48px 0;
  border-top:1px solid rgba(255,255,255,0.07);
  display:flex;justify-content:space-between;align-items:center;
  font-family:var(--mono);font-size:.58rem;letter-spacing:.06em;color:rgba(247,243,236,0.3);
}

/* ════════════════════════════════════════════════════════════
   SURFACE UTILITIES
   ════════════════════════════════════════════════════════════ */
.bg-paper2{background:var(--paper2)}
.bg-paper3{background:var(--paper3)}
.bg-ink   {background:var(--ink);color:var(--paper)}
.bg-red   {background:var(--red);color:var(--paper)}

/* ════════════════════════════════════════════════════════════
   SENTENCE DISPLAY BOX（深色句子展示框，参考原始右栏）
   在任意浅色页面上放置深色句子展示
   ════════════════════════════════════════════════════════════ */
.sent-box-dark{
  background:var(--ink);color:var(--paper);
  padding:28px 32px;position:relative;
  font-family:var(--display);font-size:clamp(.95rem,1.7vw,1.2rem);line-height:2.4;
}
.sent-box-dark::before{
  content:'';position:absolute;top:0;left:0;bottom:0;width:3px;
  background:linear-gradient(180deg,var(--red),var(--gold));
}
.sent-box-dark .t-trunk{color:rgba(247,243,236,0.75)}
.sent-box-dark .t-noun {background:rgba(26,58,92,0.55); border-color:#3a6ea8;color:var(--tag-noun-b)}
.sent-box-dark .t-part {background:rgba(201,150,42,0.18);border-color:#c9962a;color:var(--tag-part-b)}
.sent-box-dark .t-sent {background:rgba(192,57,43,0.18); border-color:#c0392b;color:var(--tag-sent-b)}
.sent-box-dark .t-nest {background:rgba(42,106,58,0.22);  border-color:#3a8a4a;color:var(--tag-nest-b)}

/* ════════════════════════════════════════════════════════════
   SIDEBAR（浅色系侧边栏）
   ════════════════════════════════════════════════════════════ */
.sidebar-panel{background:var(--paper2);border-right:1px solid rgba(13,13,13,0.08)}
.sidebar-section-label{
  font-family:var(--mono);font-size:.57rem;letter-spacing:.18em;
  text-transform:uppercase;color:var(--muted);padding:12px 18px 6px;
}
.sidebar-item{
  display:flex;align-items:center;gap:9px;
  width:100%;padding:10px 16px;background:none;border:none;
  cursor:pointer;text-align:left;transition:all .15s;border-left:2px solid transparent;
}
.sidebar-item:hover{background:var(--paper3)}
.sidebar-item.active{background:var(--paper3);border-left-color:var(--red)}
.sidebar-item-name{font-family:var(--serif);font-size:.82rem;font-weight:600;color:var(--ink)}
.sidebar-item-desc{font-family:var(--mono);font-size:.58rem;color:var(--muted);margin-top:1px}

/* ════════════════════════════════════════════════════════════
   SECTION VARIANTS
   ════════════════════════════════════════════════════════════ */
.section-alt {background:var(--paper2)}
.section-alt2{background:var(--paper3)}
.section-ink {background:var(--ink);color:var(--paper)}
.section-ink .sec-eyebrow{color:rgba(247,243,236,0.35)}
.section-ink .sec-eyebrow::before{background:rgba(247,243,236,0.3)}
.section-ink .sec-title{color:var(--paper)}
.section-ink .divline{color:rgba(247,243,236,0.3)}
.section-ink .divline::before,.section-ink .divline::after{background:rgba(255,255,255,0.08)}
.section-red {background:var(--red);color:var(--paper)}
.section-red .sec-eyebrow{color:rgba(247,243,236,0.6)}
.section-red .sec-title{color:var(--paper)}

/* ════════════════════════════════════════════════════════════
   ANIMATIONS
   ════════════════════════════════════════════════════════════ */
@keyframes fadeUp{from{opacity:0;transform:translateY(22px)}to{opacity:1;transform:translateY(0)}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.fu  {opacity:0;animation:fadeUp .6s ease forwards}
.d1  {animation-delay:.08s}.d2{animation-delay:.20s}.d3{animation-delay:.33s}
.d4  {animation-delay:.47s}.d5{animation-delay:.62s}
.reveal{opacity:0;transform:translateY(18px);transition:opacity .55s ease,transform .55s ease}
.reveal.vis{opacity:1;transform:translateY(0)}

/* ════════════════════════════════════════════════════════════
   RESPONSIVE
   ════════════════════════════════════════════════════════════ */
@media(max-width:1024px){
  .g4{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .container,.container-sm{padding:0 32px}
}
@media(max-width:768px){
  :root{--nav-h:58px}
  .site-nav{padding:0 20px}
  .nav-menu{display:none}
  .section{padding:56px 0}.section-lg{padding:80px 0}
  .g2,.g3,.g4{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;padding:0 24px}
  .footer-btm{flex-direction:column;gap:8px;text-align:center;padding:16px 24px 0}
  .container,.container-sm{padding:0 22px}
  .trial-banner{padding:9px 20px;font-size:.57rem;flex-wrap:wrap;gap:10px}
}

/* ── LANGUAGE TOGGLE BUTTON ─────────────────────────────── */
.lang-btn {
  font-family: var(--mono) !important;
  font-size: .85rem !important;
  font-weight: 700;
  letter-spacing: .05em !important;
  padding: 6px 14px !important;
  border: 1.5px solid var(--ink) !important;
  color: var(--ink) !important;
  background: none;
  transition: all .18s;
  cursor: pointer;
  margin-right: 4px;
}
.lang-btn:hover { background: var(--ink) !important; color: var(--paper) !important; }

/* ── AVATAR DROPDOWN ─────────────────────────────────────── */
.nav-avatar-wrap { position: relative; }
.nav-avatar {
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--ink); color: var(--paper);
  font-family: var(--display); font-size: 1rem; font-weight: 700;
  border: 2px solid var(--ink); cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all .18s; flex-shrink: 0;
}
.nav-avatar:hover { background: var(--red); border-color: var(--red); }
.nav-avatar-menu {
  position: absolute; top: calc(100% + 8px); right: 0;
  background: var(--paper); border: 1px solid rgba(13,13,13,.12);
  box-shadow: 4px 4px 0 rgba(13,13,13,.08);
  min-width: 160px; z-index: 300;
  opacity: 0; visibility: hidden;
  transform: translateY(-6px); transition: all .18s;
}
.nav-avatar-menu.open { opacity: 1; visibility: visible; transform: translateY(0); }
.nam-user {
  padding: 12px 16px 8px;
  font-family: var(--serif); font-size: .85rem; font-weight: 700;
  color: var(--ink); border-bottom: 1px solid var(--border);
}
.nam-item {
  display: block; width: 100%; padding: 10px 16px;
  font-family: var(--mono); font-size: .75rem; letter-spacing: .05em;
  color: var(--muted); background: none; border: none;
  text-align: left; cursor: pointer; transition: all .14s;
  text-decoration: none;
}
.nam-item:hover { color: var(--ink); background: var(--paper2); }
.nam-logout { color: var(--red) !important; }
.nam-logout:hover { background: var(--red-soft) !important; }
.nam-divider { height: 1px; background: var(--border); margin: 4px 0; }
/* ── MOBILE NAV ── */
.nav-hamburger {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 6px; margin-left: 8px;
}
.nav-hamburger span {
  display: block; width: 22px; height: 2px; background: var(--ink); transition: all .25s;
}
.nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 860px) {
  .nav-hamburger { display: flex; }
  .nav-menu {
    display: none; position: absolute; top: var(--nav-h); left: 0; right: 0;
    background: var(--paper); border-bottom: 1px solid var(--border);
    flex-direction: column; padding: 8px 0; z-index: 400;
    box-shadow: 0 4px 12px rgba(13,13,13,.08);
  }
  .nav-menu.open { display: flex; }
  .nav-item { width: 100%; }
  .nav-link { padding: 12px 20px; font-size: 1rem; border-bottom: none; }
  .nav-drop { position: static; box-shadow: none; border: none; background: var(--paper2); }
  .nav-drop a { padding: 10px 32px; }
  .nav-right { gap: 6px; }
  .nav-right .nav-avatar-wrap, .nav-right a, .nav-right button { font-size: .85rem; }
}