/* ============================================================
   ZENITH IELTS STUDIO — stylesheet
   Vanilla CSS, no build step. Design tokens at :root.
   ============================================================ */

:root{
  /* Brand palette */
  --ink:        #0E1E33;
  --ink-800:    #142943;
  --ink-700:    #1B3454;
  --ink-500:    #2E4E77;
  --ink-300:    #6C86A6;

  --gold:       #C8A45C;
  --gold-600:   #A9873C;
  --gold-100:   #F4EADA;
  --gold-050:   #FBF7EF;

  --teal:       #0E7C7B;

  /* Neutrals */
  --bg:         #FFFFFF;
  --surface:    #F7F8FA;
  --surface-2:  #EFF2F7;
  --line:       #E4E8EF;
  --line-soft:  #EDF0F5;
  --text:       #16202E;
  --muted:      #5B6B7F;
  --muted-2:    #7C8A9C;

  /* Geometry */
  --r-sm: 8px;
  --r:    14px;
  --r-lg: 20px;
  --r-xl: 28px;
  --maxw: 1180px;
  --maxw-narrow: 800px;

  /* Elevation */
  --sh-xs: 0 1px 2px rgba(14,30,51,.06);
  --sh-sm: 0 2px 8px rgba(14,30,51,.06);
  --sh-md: 0 8px 24px rgba(14,30,51,.08);
  --sh-lg: 0 20px 48px rgba(14,30,51,.12);
  --sh-gold: 0 10px 30px rgba(168,135,60,.22);

  /* Type */
  --font: "Inter", "Segoe UI", -apple-system, BlinkMacSystemFont, "Helvetica Neue",
          "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;

  --ease: cubic-bezier(.22,.61,.36,1);
}

/* ---------- Reset ---------- */
*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; -webkit-text-size-adjust:100%; }
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.7;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
h1,h2,h3,h4{ margin:0; line-height:1.25; letter-spacing:-.015em; font-weight:700; color:var(--ink); }
p{ margin:0; }
ul,ol{ margin:0; padding:0; list-style:none; }
a{ color:inherit; text-decoration:none; }
img,svg{ display:block; max-width:100%; }
button{ font:inherit; color:inherit; }
[hidden]{ display:none !important; }
section[id]{ scroll-margin-top:92px; }
:focus-visible{ outline:2px solid var(--gold-600); outline-offset:3px; border-radius:4px; }

.sprite{ position:absolute; width:0; height:0; overflow:hidden; }
.ic{ width:1.05em; height:1.05em; flex:none; display:inline-block; vertical-align:-.15em; }

.skip-link{
  position:absolute; left:-9999px; top:0; z-index:200;
  background:var(--ink); color:#fff; padding:10px 16px; border-radius:0 0 var(--r) 0;
}
.skip-link:focus{ left:0; }

.container{ width:100%; max-width:var(--maxw); margin:0 auto; padding:0 24px; }
.container-narrow{ max-width:var(--maxw-narrow); }

/* ---------- Buttons ---------- */
.btn{
  --btn-bg:transparent; --btn-fg:var(--ink); --btn-bd:var(--line);
  display:inline-flex; align-items:center; justify-content:center; gap:.5em;
  padding:12px 22px; border:1px solid var(--btn-bd); border-radius:999px;
  background:var(--btn-bg); color:var(--btn-fg);
  font-weight:600; font-size:.95rem; line-height:1.2; cursor:pointer;
  transition:transform .18s var(--ease), box-shadow .18s var(--ease),
             background .18s var(--ease), border-color .18s var(--ease), color .18s var(--ease);
  white-space:nowrap;
}
.btn:hover{ transform:translateY(-1px); }
.btn:active{ transform:translateY(0); }
.btn .ic{ width:1.1em; height:1.1em; }

.btn-primary{
  --btn-bg:var(--ink); --btn-fg:#fff; --btn-bd:var(--ink);
  box-shadow:var(--sh-sm);
}
.btn-primary:hover{ --btn-bg:var(--ink-700); --btn-bd:var(--ink-700); box-shadow:var(--sh-md); }

.btn-ghost{ --btn-bg:#fff; --btn-fg:var(--ink); --btn-bd:var(--line); }
.btn-ghost:hover{ --btn-bd:var(--ink-300); --btn-bg:var(--surface); }

.btn-text{ --btn-bg:transparent; --btn-fg:var(--muted); --btn-bd:transparent; padding:8px 12px; }
.btn-text:hover{ --btn-fg:var(--ink); --btn-bg:var(--surface); }

.btn-sm{ padding:9px 16px; font-size:.875rem; }
.btn-lg{ padding:15px 28px; font-size:1rem; }
.btn-block{ width:100%; }

.link-arrow{
  display:inline-flex; align-items:center; gap:.4em;
  font-weight:600; font-size:.925rem; color:var(--ink-700);
  transition:gap .2s var(--ease), color .2s var(--ease);
}
.link-arrow:hover{ gap:.7em; color:var(--gold-600); }

/* ---------- Header ---------- */
.site-header{
  position:sticky; top:0; z-index:100;
  background:rgba(255,255,255,.82);
  backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .25s var(--ease), box-shadow .25s var(--ease), background .25s var(--ease);
}
.site-header.is-stuck{ border-bottom-color:var(--line); box-shadow:0 2px 16px rgba(14,30,51,.05); }
.header-inner{ display:flex; align-items:center; gap:24px; height:74px; }

.brand{ display:flex; align-items:center; gap:11px; flex:none; }
.brand-mark{
  width:38px; height:38px; border-radius:11px; flex:none;
  background:linear-gradient(145deg,var(--ink-700),var(--ink));
  color:var(--gold); display:grid; place-items:center;
  font-weight:800; font-size:1.15rem; letter-spacing:.02em;
  box-shadow:var(--sh-sm);
}
.brand-text{ display:flex; flex-direction:column; line-height:1.15; }
.brand-text strong{ font-size:.95rem; letter-spacing:.14em; color:var(--ink); font-weight:800; }
.brand-text em{ font-style:normal; color:var(--gold-600); }
.brand-text small{ font-size:.75rem; color:var(--muted); letter-spacing:.04em; }

.nav{ margin-left:auto; }
.nav ul{ display:flex; gap:4px; }
.nav a{
  display:block; padding:8px 12px; border-radius:var(--r-sm);
  font-size:.925rem; font-weight:500; color:var(--muted);
  transition:color .18s var(--ease), background .18s var(--ease);
}
.nav a:hover{ color:var(--ink); background:var(--surface); }

.header-actions{ display:flex; align-items:center; gap:10px; flex:none; }

.lang-switch{
  display:inline-flex; align-items:center; gap:7px;
  padding:6px 10px 6px 12px; border:1px solid var(--line); border-radius:999px;
  background:#fff; cursor:pointer; color:var(--muted);
  transition:border-color .18s var(--ease), color .18s var(--ease);
}
.lang-switch:hover{ border-color:var(--ink-300); color:var(--ink); }
.lang-switch .ic{ width:16px; height:16px; }
.lang-switch-labels{ display:inline-flex; font-size:.8rem; font-weight:600; letter-spacing:.02em; }
.lang-opt{ padding:2px 6px; border-radius:6px; transition:background .2s var(--ease), color .2s var(--ease); }
.lang-opt.is-active{ background:var(--ink); color:#fff; }

.nav-toggle{
  display:none; width:42px; height:42px; border:1px solid var(--line); border-radius:12px;
  background:#fff; cursor:pointer; place-items:center; color:var(--ink);
}
.nav-toggle .ic{ width:20px; height:20px; }
.nav-toggle .ic-close{ display:none; }
.nav-toggle[aria-expanded="true"] .ic-menu{ display:none; }
.nav-toggle[aria-expanded="true"] .ic-close{ display:block; }

/* ---------- Hero ---------- */
.hero{ position:relative; padding:clamp(56px,8vw,104px) 0 clamp(56px,7vw,88px); overflow:hidden; }
.hero-bg{
  position:absolute; inset:0; z-index:0; pointer-events:none;
  background:
    radial-gradient(900px 460px at 88% -8%, rgba(200,164,92,.16), transparent 62%),
    radial-gradient(760px 520px at 4% 8%, rgba(46,78,119,.11), transparent 60%),
    linear-gradient(180deg,#FCFDFE 0%, #F5F7FA 58%, #FFFFFF 100%);
}
.hero-bg::after{
  content:""; position:absolute; inset:0; opacity:.5;
  background-image:linear-gradient(rgba(14,30,51,.045) 1px, transparent 1px),
                   linear-gradient(90deg, rgba(14,30,51,.045) 1px, transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(760px 460px at 70% 0%, #000 0%, transparent 78%);
  -webkit-mask-image:radial-gradient(760px 460px at 70% 0%, #000 0%, transparent 78%);
}
.hero .container{ position:relative; z-index:1; }
.hero-grid{
  display:grid; grid-template-columns:minmax(0,1.06fr) minmax(0,.94fr);
  gap:clamp(32px,5vw,64px); align-items:center;
}

.eyebrow{
  display:inline-flex; align-items:center; gap:.5em;
  margin:0 0 18px; padding:6px 14px 6px 11px;
  border:1px solid var(--gold-100); border-radius:999px; background:var(--gold-050);
  font-size:.8rem; font-weight:600; letter-spacing:.06em; color:var(--gold-600);
}
.eyebrow .ic{ width:14px; height:14px; }

.hero h1{
  font-size:clamp(2.1rem,4.6vw,3.5rem); font-weight:800; letter-spacing:-.03em; line-height:1.14;
}
.hero h1 em{
  font-style:normal; position:relative; color:var(--ink);
  background:linear-gradient(180deg, transparent 66%, rgba(200,164,92,.42) 66%);
  padding:0 .06em;
}
.lead{ margin-top:20px; font-size:clamp(1rem,1.35vw,1.1rem); color:var(--muted); max-width:34em; }

.hero-cta{ display:flex; flex-wrap:wrap; gap:12px; margin-top:30px; }
.hero-note{
  display:flex; gap:.55em; align-items:flex-start;
  margin-top:18px; font-size:.85rem; color:var(--muted-2); max-width:36em;
}
.hero-note .ic{ margin-top:.28em; color:var(--teal); }

.stat-strip{
  display:flex; flex-wrap:wrap; gap:14px 40px;
  margin:38px 0 0; padding-top:26px; border-top:1px solid var(--line);
}
.stat dt{ font-size:1.9rem; font-weight:800; color:var(--ink); letter-spacing:-.02em; line-height:1; }
.stat dd{ margin:6px 0 0; font-size:.83rem; color:var(--muted); }

/* Hero visual */
.hero-visual{ position:relative; }
.score-card{
  position:relative; z-index:2;
  background:#fff; border:1px solid var(--line); border-radius:var(--r-xl);
  padding:26px 26px 20px; box-shadow:var(--sh-lg);
}
.score-card-head{ display:flex; align-items:center; justify-content:space-between; gap:12px; }
.chip{
  display:inline-block; padding:4px 10px; border-radius:999px;
  background:var(--gold-050); border:1px solid var(--gold-100);
  font-size:.72rem; font-weight:700; letter-spacing:.06em; color:var(--gold-600);
}
.score-card-name{ font-size:.88rem; font-weight:700; color:var(--ink); letter-spacing:.02em; }

.score-overall{
  display:flex; align-items:flex-end; justify-content:space-between; gap:16px;
  margin:18px 0 22px; padding-bottom:20px; border-bottom:1px dashed var(--line);
}
.score-overall-num{
  display:block; font-size:3.4rem; font-weight:800; letter-spacing:-.04em; line-height:1; color:var(--ink);
}
.score-overall-label{ display:block; margin-top:6px; font-size:.8rem; color:var(--muted); letter-spacing:.06em; }
.score-delta{
  padding:6px 12px; border-radius:999px; background:rgba(14,124,123,.09); color:var(--teal);
  font-weight:700; font-size:.9rem;
}

.score-bars li{
  display:grid; grid-template-columns:52px 1fr 42px; align-items:center; gap:12px;
  padding:7px 0;
}
.score-bars span{ font-size:.86rem; color:var(--muted); }
.score-bars i{
  display:block; height:8px; border-radius:99px; background:var(--surface-2); overflow:hidden; position:relative;
}
.score-bars i::after{
  content:""; position:absolute; inset:0 auto 0 0; width:var(--w);
  border-radius:99px; background:linear-gradient(90deg,var(--ink-500),var(--gold));
}
.score-bars b{ font-size:.88rem; font-weight:700; text-align:right; color:var(--ink); }
.score-foot{ margin-top:16px; font-size:.72rem; color:var(--muted-2); text-align:center; }

.float-card{
  position:absolute; z-index:3; display:flex; align-items:center; gap:10px;
  background:#fff; border:1px solid var(--line); border-radius:16px; padding:11px 15px;
  box-shadow:var(--sh-md);
}
.float-card .ic{ width:20px; height:20px; color:var(--gold-600); }
.float-card strong{ display:block; font-size:.8rem; color:var(--ink); }
.float-card span{ display:block; font-size:.72rem; color:var(--muted); }
.float-card-a{ left:-30px; top:26%; }
.float-card-b{ right:-18px; bottom:-6px; }

/* ---------- Sections ---------- */
.section{ padding:clamp(64px,8vw,110px) 0; }
.section-soft{ background:var(--surface); border-top:1px solid var(--line-soft); border-bottom:1px solid var(--line-soft); }

.section-head{ max-width:43em; margin-bottom:clamp(34px,4.5vw,56px); }
.section-head h2, .contact-copy h2, .tool-intro h2{
  font-size:clamp(1.65rem,3.1vw,2.4rem); font-weight:800; letter-spacing:-.025em;
}
.section-sub{ margin-top:14px; color:var(--muted); font-size:1.02rem; }

.grid-3{ display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:22px; }

/* ---------- Path cards ---------- */
.path-card{
  display:flex; flex-direction:column;
  background:#fff; border:1px solid var(--line); border-radius:var(--r-lg);
  padding:28px 26px; box-shadow:var(--sh-xs);
  transition:transform .22s var(--ease), box-shadow .22s var(--ease), border-color .22s var(--ease);
}
.path-card:hover{ transform:translateY(-4px); box-shadow:var(--sh-md); border-color:var(--ink-300); }
.path-tag{
  align-self:flex-start; padding:4px 11px; border-radius:999px;
  background:var(--ink); color:#fff; font-size:.72rem; font-weight:700; letter-spacing:.08em;
}
.path-card h3{ margin:16px 0 10px; font-size:1.25rem; }
.path-desc{ color:var(--muted); font-size:.94rem; }
.tick-list{ margin:18px 0 22px; display:grid; gap:10px; }
.tick-list li{
  display:flex; gap:.6em; align-items:flex-start; font-size:.9rem; color:var(--text);
}
.tick-list .ic{ margin-top:.32em; width:15px; height:15px; color:var(--gold-600); flex:none; }
.path-card .link-arrow{ margin-top:auto; }

/* ---------- Tutor ---------- */
.tutor-grid{
  display:grid; grid-template-columns:minmax(0,.82fr) minmax(0,1.18fr);
  gap:clamp(30px,5vw,60px); align-items:start;
}
.tutor-media{ position:relative; }
.photo-frame{
  border-radius:var(--r-xl); overflow:hidden; background:var(--surface-2);
  border:1px solid var(--line); box-shadow:var(--sh-md);
}
.photo-frame-media{ aspect-ratio:4/5; }
.photo-frame img{
  width:100%; height:100%; object-fit:cover; object-position:center top; display:block;
  transition:transform .5s var(--ease);
}
.tutor-media:hover .photo-frame img{ transform:scale(1.03); }

.tutor-badge{
  position:absolute; left:16px; right:16px; bottom:16px;
  display:flex; align-items:center; gap:11px;
  background:rgba(255,255,255,.94); backdrop-filter:blur(8px);
  border:1px solid var(--line); border-radius:16px; padding:12px 15px; box-shadow:var(--sh-md);
}
.tutor-badge .ic{ width:20px; height:20px; color:var(--gold); }
.tutor-badge strong{ display:block; font-size:.88rem; color:var(--ink); }
.tutor-badge span{ display:block; font-size:.75rem; color:var(--muted); }

.tutor-role{ margin-top:8px; font-weight:600; color:var(--gold-600); font-size:.95rem; }
.tutor-bio{ margin-top:18px; color:var(--muted); font-size:1rem; }
.cred-list{ margin:22px 0 0; display:grid; gap:11px; }
.cred-list li{ display:flex; gap:.6em; align-items:flex-start; font-size:.93rem; }
.cred-list .ic{ margin-top:.32em; width:16px; height:16px; color:var(--teal); flex:none; }

.philo{
  display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:14px; margin-top:30px;
  padding-top:26px; border-top:1px solid var(--line);
}
.philo-item .ic{ width:20px; height:20px; color:var(--gold-600); margin-bottom:10px; }
.philo-item strong{ display:block; font-size:.94rem; color:var(--ink); }
.philo-item span{ display:block; margin-top:5px; font-size:.83rem; color:var(--muted); line-height:1.55; }

/* ---------- Method steps ---------- */
.steps{
  display:grid; grid-template-columns:repeat(6,minmax(0,1fr)); gap:0;
  border:1px solid var(--line); border-radius:var(--r-lg); overflow:hidden; background:#fff;
  box-shadow:var(--sh-xs);
}
.steps li{ padding:24px 20px; border-right:1px solid var(--line-soft); position:relative; }
.steps li:last-child{ border-right:0; }
.steps li::before{
  content:""; position:absolute; left:0; right:0; top:0; height:3px; background:var(--gold);
  opacity:0; transition:opacity .25s var(--ease);
}
.steps li:hover::before{ opacity:1; }
.step-num{
  display:block; font-size:.78rem; font-weight:800; letter-spacing:.14em; color:var(--gold-600);
  margin-bottom:10px;
}
.steps h3{ font-size:1.02rem; margin-bottom:8px; }
.steps p{ font-size:.85rem; color:var(--muted); line-height:1.6; }

.skills{ display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:20px; margin-top:26px; }
.skill-card{
  background:#fff; border:1px solid var(--line); border-radius:var(--r-lg); padding:24px 22px;
  box-shadow:var(--sh-xs); transition:transform .2s var(--ease), box-shadow .2s var(--ease);
}
.skill-card:hover{ transform:translateY(-3px); box-shadow:var(--sh-md); }
.skill-card h3{ display:flex; flex-direction:column; gap:3px; margin-bottom:14px; }
.skill-kicker{ font-size:1.15rem; color:var(--ink); }
.skill-en{ font-size:.74rem; font-weight:600; letter-spacing:.14em; text-transform:uppercase; color:var(--gold-600); }
.skill-pain{ font-size:.86rem; color:var(--muted); }
.skill-do{ margin-top:10px; font-size:.86rem; color:var(--text); }
.skill-key{
  display:flex; gap:.5em; align-items:flex-start; margin-top:16px; padding-top:14px;
  border-top:1px dashed var(--line); font-size:.83rem; font-weight:600; color:var(--ink-700);
}
.skill-key .ic{ margin-top:.3em; width:14px; height:14px; color:var(--gold-600); }

/* ---------- Pricing ---------- */
.price-grid{ align-items:stretch; }
.price-card{
  display:flex; flex-direction:column; position:relative;
  background:#fff; border:1px solid var(--line); border-radius:var(--r-lg); padding:30px 26px;
  box-shadow:var(--sh-xs); transition:transform .22s var(--ease), box-shadow .22s var(--ease);
}
.price-card:hover{ transform:translateY(-4px); box-shadow:var(--sh-md); }
.price-card-featured{
  border-color:var(--ink); box-shadow:var(--sh-md);
  background:linear-gradient(180deg,#FFFFFF 0%,#FCFCFD 100%);
}
.price-flag{
  position:absolute; top:-13px; left:50%; transform:translateX(-50%);
  padding:5px 14px; border-radius:999px; background:var(--gold); color:#fff;
  font-size:.74rem; font-weight:800; letter-spacing:.08em; box-shadow:var(--sh-gold); white-space:nowrap;
}
.price-card h3{ font-size:1.2rem; }
.price-tagline{ margin-top:6px; font-size:.85rem; color:var(--muted); }
.price{ display:flex; align-items:baseline; gap:6px; flex-wrap:wrap; margin:20px 0 22px; }
.price-cur{ font-size:1rem; font-weight:700; color:var(--ink-500); }
.price-num{ font-size:2.5rem; font-weight:800; letter-spacing:-.035em; color:var(--ink); line-height:1; }
.price-note{ font-size:.8rem; color:var(--muted); margin-left:2px; }
.price-card .tick-list{ margin-bottom:24px; }
.price-card .btn{ margin-top:auto; }
.price-disclaimer{
  display:flex; gap:.55em; align-items:flex-start; margin-top:26px;
  font-size:.83rem; color:var(--muted-2); max-width:52em;
}
.price-disclaimer .ic{ margin-top:.28em; color:var(--gold-600); }

/* ---------- Quotes ---------- */
.quote-card{
  margin:0; background:#fff; border:1px solid var(--line); border-radius:var(--r-lg);
  padding:28px 26px; box-shadow:var(--sh-xs); display:flex; flex-direction:column;
}
.quote-stars{ display:flex; gap:3px; color:var(--gold); margin-bottom:14px; }
.quote-stars .ic{ width:15px; height:15px; }
.quote-card blockquote{
  margin:0; font-size:.98rem; line-height:1.7; color:var(--text);
}
.quote-card figcaption{ margin-top:auto; padding-top:20px; }
.quote-card figcaption strong{ display:block; font-size:.92rem; color:var(--ink); }
.quote-card figcaption span{ display:block; margin-top:4px; font-size:.8rem; color:var(--muted); }
.privacy-note{
  display:flex; gap:.55em; align-items:flex-start; margin-top:28px; padding:16px 18px;
  background:var(--gold-050); border:1px solid var(--gold-100); border-radius:var(--r);
  font-size:.84rem; color:var(--ink-700);
}
.privacy-note .ic{ margin-top:.28em; color:var(--gold-600); }

/* ---------- Tool ---------- */
.tool-grid{
  display:grid; grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);
  gap:clamp(28px,4.5vw,56px); align-items:center;
}
.tool-intro .tick-list{ margin-top:20px; }
.tool-card{
  background:#fff; border:1px solid var(--line); border-radius:var(--r-xl);
  padding:28px; box-shadow:var(--sh-md);
}
.tool-fields{ display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:14px; }
.field{ display:block; }
.field > span, .field > label{ display:block; font-size:.83rem; font-weight:600; color:var(--ink); margin-bottom:7px; }
.field label i{ color:var(--gold-600); font-style:normal; }
input[type="text"], textarea, select{
  width:100%; padding:12px 14px; border:1px solid var(--line); border-radius:var(--r);
  background:#fff; color:var(--text); font-family:inherit; font-size:.93rem;
  transition:border-color .18s var(--ease), box-shadow .18s var(--ease);
}
textarea{ resize:vertical; min-height:76px; }
select{ appearance:none; -webkit-appearance:none; cursor:pointer;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%235B6B7F' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat; background-position:right 12px center; background-size:16px;
  padding-right:38px;
}
input:focus, textarea:focus, select:focus{
  outline:none; border-color:var(--ink-300); box-shadow:0 0 0 4px rgba(46,78,119,.10);
}
input::placeholder, textarea::placeholder{ color:var(--muted-2); }
input.is-invalid, textarea.is-invalid{ border-color:#C0483B; box-shadow:0 0 0 4px rgba(192,72,59,.10); }

.tool-output{
  margin:22px 0 20px; padding:22px; border-radius:var(--r-lg);
  background:linear-gradient(150deg,var(--ink) 0%,var(--ink-700) 100%);
  color:#fff; text-align:center;
}
.tool-result-label{ display:block; font-size:.78rem; letter-spacing:.14em; text-transform:uppercase; color:rgba(255,255,255,.62); }
.tool-result-num{
  display:block; margin:6px 0 4px; font-size:3rem; font-weight:800; letter-spacing:-.04em; line-height:1;
  color:var(--gold);
}
.tool-result-desc{ display:block; font-size:.88rem; color:rgba(255,255,255,.82); }
.tool-avg{ margin-top:14px; font-size:.8rem; color:rgba(255,255,255,.66); }
.tool-avg b{ color:#fff; }
.tool-actions{ display:grid; gap:8px; }
.tool-foot{ margin-top:16px; font-size:.76rem; color:var(--muted-2); line-height:1.6; }

/* ---------- How to ---------- */
.howto-list{ display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:22px; counter-reset:h; }
.howto-list li{
  background:var(--surface); border:1px solid var(--line); border-radius:var(--r-lg); padding:26px 24px;
}
.howto-num{
  display:grid; place-items:center; width:38px; height:38px; margin-bottom:16px;
  border-radius:12px; background:var(--ink); color:var(--gold); font-weight:800; font-size:1rem;
}
.howto-list h3{ font-size:1.05rem; margin-bottom:8px; }
.howto-list p{ font-size:.9rem; color:var(--muted); }
.parent-note{
  display:flex; gap:.55em; align-items:flex-start; margin-top:26px;
  font-size:.85rem; color:var(--muted);
}
.parent-note .ic{ margin-top:.28em; color:var(--teal); }

/* ---------- FAQ ---------- */
.accordion{ border:1px solid var(--line); border-radius:var(--r-lg); overflow:hidden; background:#fff; }
.acc-item + .acc-item{ border-top:1px solid var(--line-soft); }
.acc-trigger{
  width:100%; display:flex; align-items:center; justify-content:space-between; gap:18px;
  padding:20px 24px; background:none; border:0; cursor:pointer; text-align:left;
  font-size:1rem; font-weight:600; color:var(--ink);
  transition:background .18s var(--ease);
}
.acc-trigger:hover{ background:var(--surface); }
.acc-trigger .ic{ width:20px; height:20px; color:var(--muted); transition:transform .25s var(--ease), color .2s var(--ease); }
.acc-trigger[aria-expanded="true"]{ background:var(--surface); }
.acc-trigger[aria-expanded="true"] .ic{ transform:rotate(180deg); color:var(--gold-600); }
.acc-panel{ max-height:0; overflow:hidden; transition:max-height .32s var(--ease); }
.acc-panel p{ padding:0 24px 22px; font-size:.93rem; color:var(--muted); max-width:60em; }

/* ---------- Contact ---------- */
.contact-grid{ display:grid; grid-template-columns:minmax(0,1fr) minmax(0,1.02fr); gap:clamp(32px,5vw,64px); }
.contact-copy p{ margin-top:16px; color:var(--muted); }
.contact-list{ margin:28px 0; display:grid; gap:16px; }
.contact-list li{ display:flex; gap:12px; align-items:flex-start; }
.contact-list .ic{ width:20px; height:20px; margin-top:.2em; color:var(--gold-600); flex:none; }
.contact-list strong{ display:block; font-size:.9rem; color:var(--ink); }
.contact-list span{ display:block; margin-top:2px; font-size:.87rem; color:var(--muted); }
.contact-list a{
  color:var(--muted); border-bottom:1px solid var(--line);
  transition:color .18s var(--ease), border-color .18s var(--ease);
}
.contact-list a:hover{ color:var(--ink); border-color:var(--gold); }

.privacy-box{
  display:flex; gap:12px; align-items:flex-start; padding:18px 20px;
  background:var(--gold-050); border:1px solid var(--gold-100); border-radius:var(--r);
}
.privacy-box .ic{ width:20px; height:20px; margin-top:.18em; color:var(--gold-600); flex:none; }
.privacy-box strong{ display:block; font-size:.9rem; color:var(--ink); }
.privacy-box p{ margin:6px 0 0; font-size:.83rem; color:var(--ink-700); }

.contact-form-wrap{ position:relative; }
.contact-form{
  background:#fff; border:1px solid var(--line); border-radius:var(--r-xl);
  padding:clamp(24px,3vw,32px); box-shadow:var(--sh-md);
  display:grid; gap:16px;
}
.field-row{ display:grid; grid-template-columns:1fr 1fr; gap:14px; }
.chip-group{ display:flex; flex-wrap:wrap; gap:8px; }
.chip-check{
  display:inline-flex; align-items:center; gap:7px; padding:8px 14px;
  border:1px solid var(--line); border-radius:999px; cursor:pointer;
  font-size:.85rem; color:var(--muted); transition:all .18s var(--ease);
}
.chip-check:has(input:checked){ border-color:var(--ink); background:var(--ink); color:#fff; }
.chip-check input{ accent-color:var(--gold-600); margin:0; }
.consent-check{
  display:flex; gap:10px; align-items:flex-start; font-size:.82rem; color:var(--muted);
  line-height:1.6; cursor:pointer;
}
.consent-check input{ margin-top:.25em; accent-color:var(--ink); flex:none; }
.form-error{
  margin:0; padding:11px 14px; border-radius:var(--r-sm);
  background:rgba(192,72,59,.08); border:1px solid rgba(192,72,59,.3);
  color:#9C3629; font-size:.85rem;
}
.form-foot{ margin:0; font-size:.76rem; color:var(--muted-2); line-height:1.6; text-align:center; }

.form-success{
  background:#fff; border:1px solid var(--line); border-radius:var(--r-xl);
  padding:clamp(30px,4vw,44px); box-shadow:var(--sh-md); text-align:center;
}
.form-success .ic{
  width:52px; height:52px; margin:0 auto 18px; padding:12px; border-radius:50%;
  background:rgba(14,124,123,.1); color:var(--teal);
}
.form-success h3{ font-size:1.3rem; margin-bottom:10px; }
.form-success p{ color:var(--muted); max-width:32em; margin:0 auto 22px; }

/* ---------- Footer ---------- */
.site-footer{ background:var(--ink); color:rgba(255,255,255,.72); padding:64px 0 26px; margin-top:0; }
.footer-grid{ display:grid; grid-template-columns:1.6fr 1fr 1.2fr 1fr; gap:34px; }
.site-footer .brand-text strong{ color:#fff; }
.site-footer .brand-text small{ color:rgba(255,255,255,.5); }
.site-footer .brand-mark{ background:rgba(255,255,255,.08); box-shadow:none; }
.footer-brand p{ margin-top:16px; font-size:.86rem; max-width:26em; line-height:1.7; }
.footer-col h4{ color:#fff; font-size:.88rem; letter-spacing:.08em; text-transform:uppercase; margin-bottom:16px; }
.footer-col ul{ display:grid; gap:10px; }
.footer-col a, .footer-col li{ font-size:.87rem; }
.footer-col a{ transition:color .18s var(--ease); }
.footer-col a:hover{ color:#fff; }
.footer-contact li{ display:flex; gap:9px; align-items:flex-start; }
.footer-contact .ic{ width:16px; height:16px; margin-top:.28em; color:var(--gold); flex:none; }
.footer-bar{
  display:flex; flex-wrap:wrap; justify-content:space-between; gap:8px 24px;
  margin-top:44px; padding-top:22px; border-top:1px solid rgba(255,255,255,.12);
}
.footer-bar p{ font-size:.78rem; color:rgba(255,255,255,.5); }

/* ---------- Reveal animation ---------- */
.reveal{ opacity:0; transform:translateY(18px); transition:opacity .6s var(--ease), transform .6s var(--ease); }
.reveal.is-in{ opacity:1; transform:none; }
@media (prefers-reduced-motion:reduce){
  .reveal{ opacity:1; transform:none; transition:none; }
  html{ scroll-behavior:auto; }
}

/* ---------- Responsive ---------- */
@media (max-width:1080px){
  .steps{ grid-template-columns:repeat(3,minmax(0,1fr)); }
  .steps li{ border-bottom:1px solid var(--line-soft); }
  .steps li:nth-child(3n){ border-right:0; }
  .steps li:nth-child(n+4){ border-bottom:0; }
  .skills{ grid-template-columns:repeat(2,minmax(0,1fr)); }
  .nav{ display:none; }
  .nav-toggle{ display:grid; }
  .nav.is-open{
    display:block; position:absolute; left:0; right:0; top:100%;
    background:#fff; border-bottom:1px solid var(--line); box-shadow:var(--sh-md);
    padding:10px 24px 18px;
  }
  .nav.is-open ul{ flex-direction:column; gap:2px; }
  .nav.is-open a{ padding:12px 8px; font-size:1rem; }
  .header-inner{ position:relative; }
}
@media (max-width:960px){
  .hero-grid, .tutor-grid, .tool-grid, .contact-grid{ grid-template-columns:1fr; }
  .hero-visual{ max-width:460px; margin:0 auto; }
  .float-card-a{ left:-10px; }
  .float-card-b{ right:-6px; }
  .grid-3{ grid-template-columns:1fr; }
  .howto-list{ grid-template-columns:1fr; }
  .footer-grid{ grid-template-columns:1fr 1fr; }
  .tutor-media{ max-width:420px; }
}
@media (max-width:720px){
  body{ font-size:15.5px; }
  .container{ padding:0 18px; }
  .header-actions .btn-primary{ display:none; }
  .steps{ grid-template-columns:1fr 1fr; }
  .steps li:nth-child(3n){ border-right:1px solid var(--line-soft); }
  .steps li:nth-child(2n){ border-right:0; }
  .steps li:nth-child(n+5){ border-bottom:0; }
  .skills{ grid-template-columns:1fr; }
  .tool-fields{ grid-template-columns:1fr; }
  .field-row{ grid-template-columns:1fr; }
  .philo{ grid-template-columns:1fr; }
  .footer-grid{ grid-template-columns:1fr; gap:26px; }
  .stat-strip{ gap:18px 28px; }
  .stat dt{ font-size:1.6rem; }
  .float-card{ padding:9px 12px; }
  .float-card-a{ left:0; top:auto; bottom:-14px; }
  .float-card-b{ display:none; }
  .hero{ padding-top:44px; }
}